A rocket capture system

Abstract

The application discloses a rocket capturing system, which comprises four platforms, the connection lines among the four platforms form a rectangle, guide rails are arranged between every two adjacent platforms, traction vehicles are arranged on each guide rail, an intercepting cable is arranged between the traction vehicles arranged on two opposite guide rails, and the two ends of the intercepting cable are connected with buffer mechanisms arranged below the two opposite platforms after passing around pulleys of the two traction vehicles. The rocket capturing system can reduce the attitude and speed requirements for rocket recovery and improve the success rate of rocket recovery.

Description

Technical Field

[0001] This invention relates to the field of rocket recovery, and in particular to a capture system for rocket recovery. Background Technology

[0002] Rocket recovery technology refers to the technology of recovering and reusing rockets after launch. Disposable launch vehicles have high launch costs, and rocket recovery technology can reduce these costs. SpaceX and Blue Origin in the United States have successfully recovered rockets multiple times. For example, SpaceX's rocket recovery technology used in several launches involves the following: During the descent of the rocket stage, the main engine ignites to decelerate, while attitude control engines adjust the stage's flight attitude to ensure a near-vertical descent. As the descending stage approaches the ground, the retractable support legs deploy, allowing the rocket to land stably on the landing surface (e.g., a ground or sea platform). Specifically, the bottom of the rocket stage has retractable support legs. These legs remain retracted throughout the rocket's flight. After the stage completes its work and separates from the rocket body, the main engine shuts down, and the stage flies to the designated landing area or returns to the launch site. Upon approaching the ground, the main engine reignites, decelerating the rocket. Before landing, the support legs deploy and lock under high-pressure gas. At the moment of final impact, the rocket stage uses its main engines to reduce its speed to zero and then uses its deployed support legs to stabilize itself on the recovery site or recovery vessel. This vertical recovery technology for rocket stages places high demands on the control of the rocket's attitude and speed during descent. If the attitude or speed of the rocket stage is not well controlled, it may cause the rocket to tip over or explode, resulting in a complete failure of the rocket recovery. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a rocket capture system that can reduce the requirements for the attitude and speed of rocket recovery and improve the success rate of rocket recovery.

[0004] This invention relates to a rocket capture system, comprising a first platform, a second platform, a third platform, and a fourth platform. A first guide rail is provided between the first and second platforms; a second guide rail is provided between the second and third platforms; a third guide rail is provided between the third and fourth platforms; and a fourth guide rail is provided between the fourth platform and the first platform. The first, second, third, and fourth guide rails are arranged in a rectangular pattern. A first and second traction vehicle are mounted on the first guide rail; a third and fourth traction vehicle are mounted on the second guide rail; a fifth and sixth traction vehicle are mounted on the third guide rail; and a seventh and eighth traction vehicle are mounted on the fourth guide rail. A third guide rail is provided between the first and second platforms. The system includes a first traction device and a second traction device, which respectively pull a first tractor and a second tractor vehicle to move on a first guide rail. A third traction device and a fourth traction device are provided between the second platform and the third platform, which respectively pull a third tractor vehicle and a fourth tractor vehicle to move on the second guide rail. A fifth traction device and a sixth traction device are provided between the third platform and the fourth platform, which respectively pull a fifth tractor vehicle and a sixth tractor vehicle to move on the third guide rail. A seventh traction device and an eighth traction device are provided between the fourth platform and the first platform, which respectively pull a seventh tractor vehicle and an eighth tractor vehicle. The tractors move on the fourth guide rail. Each of the first, second, third, fourth, fifth, sixth, seventh, and eighth tractors has two oppositely arranged pulleys rotatably mounted on it. A first and second intercepting cable connect the first and sixth tractors. One end of the first intercepting cable passes over a pulley of the first tractor and connects to a first buffer mechanism at the first platform. The other end of the first intercepting cable passes over a pulley of the sixth tractor and connects to a first buffer mechanism at the third platform. One end of the second intercepting cable passes over another pulley of the first tractor and connects to a second buffer mechanism at the second platform. The other end of the second intercepting cable passes over the sixth tractor... The other pulley of the vehicle is connected to the second buffer mechanism at the fourth platform. A third and fourth intercepting cable connect the second and fifth tractor vehicles. One end of the third intercepting cable passes over a pulley of the second tractor vehicle and connects to the third buffer mechanism at the first platform. The other end of the third intercepting cable passes over a pulley of the fifth tractor vehicle and connects to the third buffer mechanism at the third platform. One end of the fourth intercepting cable passes over another pulley of the second tractor vehicle and connects to the fourth buffer mechanism at the second platform. The other end of the fourth intercepting cable passes over another pulley of the fifth tractor vehicle and connects to the fourth buffer mechanism at the fourth platform. A fifth and a sixth intercepting cable connect the third and eighth tractor vehicles.One end of the fifth intercepting cable passes over a pulley of the third tractor and connects to the fifth buffer mechanism at the second platform. The other end of the fifth intercepting cable passes over a pulley of the eighth tractor and connects to the fifth buffer mechanism at the fourth platform. One end of the sixth intercepting cable passes over another pulley of the third tractor and connects to the sixth buffer mechanism at the third platform. The other end of the sixth intercepting cable passes over another pulley of the eighth tractor and connects to the sixth buffer mechanism at the first platform. The fourth and seventh tractors are connected by the seventh and eighth intercepting cables. One end of the seventh intercepting cable passes over a pulley of the fourth tractor and connects to the seventh buffer mechanism at the second platform. The other end of the seventh intercepting cable passes over a pulley of the seventh tractor and connects to the seventh buffer mechanism at the fourth platform. One end of the eighth intercepting cable passes over another pulley of the fourth tractor and connects to the eighth buffer mechanism at the third platform. The other end of the eighth intercepting cable passes over another pulley of the seventh tractor and connects to the eighth buffer mechanism at the first platform. The first and second intercepting cables between the first and sixth tractors are parallel to the third and fourth intercepting cables between the second and fifth tractors. The fifth and sixth intercepting cables between the third and eighth tractors are parallel to the seventh and eighth intercepting cables between the fourth and seventh tractors.

[0005] The rocket capture system of the present invention includes the following: A first traction device comprises two first traction winches, respectively mounted on a first platform and a second platform, connected by a first traction cable; a first traction vehicle is fixedly connected to the first traction cable. A second traction device comprises two second traction winches, respectively mounted on a first platform and a second platform, connected by a second traction cable; a second traction vehicle is fixedly connected to the second traction cable. A third traction device comprises two third traction winches, respectively mounted on a second platform and a third platform, connected by a third traction cable; a third traction vehicle is fixedly connected to the third traction cable. A fourth traction device comprises two fourth traction winches, respectively mounted on a second platform and a third platform, connected by a fourth traction cable; a fourth traction vehicle is fixedly connected to the first platform. The fifth traction device, consisting of two fifth traction winches, is mounted on the third and fourth platforms respectively, connected by a fifth traction cable. The fifth traction vehicle is fixedly connected to the fifth traction cable. The sixth traction device, also consisting of two sixth traction winches, is mounted on the third and fourth platforms respectively, connected by a sixth traction cable. The sixth traction vehicle is fixedly connected to the sixth traction cable. The seventh traction device, consisting of two seventh traction winches, is mounted on the fourth and first platforms respectively, connected by a seventh traction cable. The seventh traction vehicle is fixedly connected to the seventh traction cable. The eighth traction device, consisting of two eighth traction winches, is mounted on the fourth and first platforms respectively, connected by an eighth traction cable. The eighth traction vehicle is fixedly connected to the eighth traction cable.

[0006] The rocket capture system of the present invention includes a first platform, a second platform, a third platform, and a fourth platform, each comprising an upper platform, a middle platform, and a lower platform arranged sequentially from top to bottom. The middle platform comprises a middle-upper platform, a middle-middle platform, and a middle-lower platform arranged sequentially from top to bottom. A first traction winch and a second traction winch are each provided on the middle-upper platform of the first and second platforms. A first fixed pulley frame is provided on the upper platform of both the first and second platforms. Two fixed pulleys are installed on each of the two first fixed pulley frames. One end of the first traction cable passes over one fixed pulley on the first fixed pulley frame of the first platform and connects to the first traction winch of the first platform. One end of the second traction cable passes over the other fixed pulley on the first fixed pulley frame of the first platform. The first traction cable is then connected to the second traction winch of the first platform. The other end of the first traction cable passes over a fixed pulley on the first fixed pulley frame of the second platform and connects to the first traction winch of the second platform. The other end of the second traction cable passes over another fixed pulley on the first fixed pulley frame of the second platform and connects to the second traction winch of the second platform. Both the second and third platforms have a third traction winch and a fourth traction winch on their upper and middle platforms. Both the second and third platforms have a second fixed pulley frame, with two fixed pulleys mounted on each frame. One end of the third traction cable passes over a fixed pulley on the second fixed pulley frame of the second platform and connects to the third traction winch of the second platform. The fourth traction cable... One end of the traction cable passes over another fixed pulley on the second fixed pulley frame of the second platform and connects to the fourth traction winch of the second platform. The other end of the third traction cable passes over a fixed pulley on the second fixed pulley frame of the third platform and connects to the third traction winch of the third platform. The other end of the fourth traction cable passes over another fixed pulley on the second fixed pulley frame of the third platform and connects to the fourth traction winch of the third platform. A fifth traction winch and a sixth traction winch are both provided on the upper and middle platforms of the third and fourth platforms. A third fixed pulley frame is provided on the upper platform of both the third and fourth platforms. Two fixed pulleys are installed on each of the two third fixed pulley frames. One end of the fifth traction cable passes over a fixed pulley on the third fixed pulley frame of the third platform. The sixth traction cable connects to the fifth traction winch of the third platform after passing over another fixed pulley on the third fixed pulley frame of the third platform. The other end of the fifth traction cable passes over a fixed pulley on the third fixed pulley frame of the fourth platform and connects to the fifth traction winch of the fourth platform. The other end of the sixth traction cable passes over another fixed pulley on the third fixed pulley frame of the fourth platform and connects to the sixth traction winch of the fourth platform. The fourth platform and the upper platform of the first platform are each equipped with a seventh traction winch and an eighth traction winch. The upper platform of the fourth platform and the first platform are each equipped with a fourth fixed pulley frame, and each of the two fourth fixed pulley frames has two fixed pulleys installed.One end of the seventh traction cable passes over a fixed pulley on the fourth fixed pulley frame of the fourth platform and connects to the seventh traction winch of the fourth platform. One end of the eighth traction cable passes over another fixed pulley on the fourth fixed pulley frame of the fourth platform and connects to the eighth traction winch of the fourth platform. The other end of the seventh traction cable passes over a fixed pulley on the fourth fixed pulley frame of the first platform and connects to the seventh traction winch of the first platform. The other end of the eighth traction cable passes over another fixed pulley on the fourth fixed pulley frame of the first platform and connects to the eighth traction winch of the first platform.

[0007] The rocket capture system of the present invention includes a first, second, third, fourth, fifth, sixth, seventh, and eighth buffer mechanism, each comprising a winch and a piston cylinder. Each piston cylinder includes a cylinder body, a piston, and a piston rod. A piston is housed within the cylinder body, and the lower end of the piston rod is fixedly connected to the piston. The upper end of the piston rod extends through the cylinder body and out of the cylinder body. A movable pulley is provided at the upper end of the piston rod. A honeycomb aluminum structure is housed within the cylinder body, positioned above the piston. The winch and piston cylinder of the first buffer mechanism are respectively a first winch and a first piston cylinder, and the winch and piston cylinder of the second buffer mechanism are respectively a second winch and a second piston cylinder. The second piston cylinder, the third buffer mechanism's winding winch and piston cylinder are respectively the third winding winch and the third piston cylinder, the fourth buffer mechanism's winding winch and piston cylinder are respectively the fourth winding winch and the fourth piston cylinder, the fifth buffer mechanism's winding winch and piston cylinder are respectively the fifth winding winch and the fifth piston cylinder, the sixth buffer mechanism's winding winch and piston cylinder are respectively the sixth winding winch and the sixth piston cylinder, the seventh buffer mechanism's winding winch and piston cylinder are respectively the seventh winding winch and the seventh piston cylinder, the eighth buffer mechanism's winding winch and piston cylinder are respectively the eighth winding winch and the eighth piston cylinder, the first winding winch of the first buffer mechanism at the first platform is located on the first platform, the... The first piston cylinder of the first buffer mechanism at the first platform is fixedly installed below the first platform. The first winding winch of the first buffer mechanism at the third platform is installed on the third platform, and the first piston cylinder of the first buffer mechanism at the third platform is fixedly installed below the third platform. The second winding winch of the second buffer mechanism at the second platform is installed on the second platform, and the second piston cylinder of the second buffer mechanism at the second platform is fixedly installed below the second platform. The second winding winch of the second buffer mechanism at the fourth platform is installed on the fourth platform, and the second piston cylinder of the second buffer mechanism at the fourth platform is fixedly installed below the fourth platform. The third winding winch of the third buffer mechanism at the first platform is installed on the first platform. The third piston cylinder of the third buffer mechanism at the first platform is fixedly installed below the first platform. The third winding winch of the third buffer mechanism at the third platform is installed on the third platform. The fourth winding winch of the fourth buffer mechanism at the second platform is installed on the second platform. The fourth piston cylinder of the fourth buffer mechanism at the second platform is fixedly installed below the second platform. The fourth winding winch of the fourth buffer mechanism at the fourth platform is installed on the fourth platform. The fifth winding winch of the fifth buffer mechanism at the second platform is installed on the second platform.The fifth piston cylinder of the fifth buffer mechanism at the second platform is fixedly located below the second platform. The fifth winding winch of the fifth buffer mechanism at the fourth platform is located on the fourth platform, and the fifth piston cylinder of the fifth buffer mechanism at the fourth platform is fixedly located below the fourth platform. The sixth winding winch of the sixth buffer mechanism at the first platform is located on the first platform, and the sixth piston cylinder of the sixth buffer mechanism at the first platform is fixedly located below the first platform. The sixth winding winch of the sixth buffer mechanism at the third platform is located on the third platform, and the sixth piston cylinder of the sixth buffer mechanism at the third platform is fixedly located below the third platform. The seventh winding winch of the seventh buffer mechanism at the second platform is located on the second platform. The seventh piston cylinder of the seventh buffer mechanism at the second platform is fixedly installed below the second platform. The seventh winding winch of the seventh buffer mechanism at the fourth platform is installed on the fourth platform, and the seventh piston cylinder of the seventh buffer mechanism at the fourth platform is fixedly installed below the fourth platform. The eighth winding winch of the eighth buffer mechanism at the first platform is installed on the first platform, and the eighth piston cylinder of the eighth buffer mechanism at the first platform is fixedly installed below the first platform. The eighth winding winch of the eighth buffer mechanism at the third platform is installed on the third platform, and the eighth piston cylinder of the eighth buffer mechanism at the third platform is fixedly installed below the third platform. One end of the first intercepting cable passes over the sliding contact on the first piston cylinder below the first platform. The first intercepting cable is connected to the first winding and unwinding winch on the first platform. The other end of the first intercepting cable passes over the movable pulley on the first piston cylinder below the third platform and connects to the first winding and unwinding winch on the third platform. One end of the second intercepting cable passes over the movable pulley on the second piston cylinder below the second platform and connects to the second winding and unwinding winch on the second platform. The other end of the second intercepting cable passes over the movable pulley on the second piston cylinder below the fourth platform and connects to the second winding and unwinding winch on the fourth platform. One end of the third intercepting cable passes over the movable pulley on the third piston cylinder below the first platform and connects to the third winding and unwinding winch on the first platform. The other end of the third intercepting cable passes over the movable pulley on the third piston cylinder below the third platform and connects to the third winding and unwinding winch on the third platform. The third winding winch is connected. One end of the fourth intercepting cable passes over the movable pulley on the fourth piston cylinder below the second platform and connects to the fourth winding winch on the second platform. The other end of the fourth intercepting cable passes over the movable pulley on the fourth piston cylinder below the fourth platform and connects to the fourth winding winch on the fourth platform. One end of the fifth intercepting cable passes over the movable pulley on the fifth piston cylinder below the second platform and connects to the fifth winding winch on the second platform. The other end of the fifth intercepting cable passes over the movable pulley on the fifth piston cylinder below the fourth platform and connects to the fifth winding winch on the fourth platform. One end of the sixth intercepting cable passes over the movable pulley on the sixth piston cylinder below the third platform and connects to the sixth winding winch on the third platform.The other end of the sixth intercepting cable passes over the movable pulley on the sixth piston cylinder below the first platform and connects to the sixth take-up and release winch on the first platform. One end of the seventh intercepting cable passes over the movable pulley on the seventh piston cylinder below the second platform and connects to the seventh take-up and release winch on the second platform. The other end of the seventh intercepting cable passes over the movable pulley on the seventh piston cylinder below the fourth platform and connects to the seventh take-up and release winch on the fourth platform. One end of the eighth intercepting cable passes over the movable pulley on the eighth piston cylinder below the third platform and connects to the eighth take-up and release winch on the third platform. The other end of the eighth intercepting cable passes over the movable pulley on the eighth piston cylinder below the first platform and connects to the eighth take-up and release winch on the first platform.

[0008] The rocket capture system of the present invention includes a first interception fixed pulley on the upper platform of both the first and third platforms, a first upper guide pulley on the middle platform of both the first and third platforms, a first lower guide pulley on the lower platform of both the first and third platforms, and a first launching winch on the lower platform of both the first and third platforms. One end of the first interception cable passes sequentially around the first interception fixed pulley, the first upper guide pulley, the first lower guide pulley, and the movable pulley on the first piston cylinder of the first platform before connecting to the first launching winch of the first platform. The other end of the first interception cable passes sequentially around the first interception fixed pulley, the first upper guide pulley, the first lower guide pulley, and the first piston cylinder of the third platform. The movable pulley on the first piston cylinder is connected to the first winding and unwinding winch of the third platform. The upper platforms of both the second and fourth platforms are equipped with second fixed intercepting pulleys. The middle platforms of both the second and fourth platforms are equipped with second upper guide pulleys. The lower platforms of both the second and fourth platforms are equipped with second lower guide pulleys. The lower platforms of both the second and fourth platforms are equipped with second winding and unwinding winches. One end of the second intercepting cable passes sequentially around the second fixed intercepting pulley, the second upper guide pulley, the second lower guide pulley, and the movable pulley on the second piston cylinder of the second platform before connecting to the second winding and unwinding winch of the second platform. The other end of the second intercepting cable passes sequentially around the second fixed intercepting pulley, the second upper guide pulley, the second lower guide pulley, and the movable pulley on the second piston cylinder of the fourth platform. The second upper guide pulley, the second lower guide pulley, and the movable pulley on the second piston cylinder are connected to the second winding winch of the fourth platform. The upper platforms of both the first and third platforms are equipped with third fixed intercepting pulleys. The middle platforms of both the first and third platforms are equipped with third upper guide pulleys. The lower platforms of both the first and third platforms are equipped with third lower guide pulleys. The lower platforms of both the first and third platforms are equipped with third winding winches. One end of the third intercepting cable passes sequentially around the third fixed intercepting pulley, the third upper guide pulley, the third lower guide pulley, and the movable pulley on the third piston cylinder of the first platform before connecting to the third winding winch of the first platform. The other end of the third intercepting cable passes sequentially around... After passing through the third fixed intercepting pulley, the third upper guide pulley, the third lower guide pulley, and the movable pulley on the third piston cylinder of the third platform, the fourth intercepting cable connects to the third winding winch of the third platform. The upper platforms of both the second and fourth platforms are equipped with fourth fixed intercepting pulleys, the middle platforms of both the second and fourth platforms are equipped with fourth upper guide pulleys, the middle and lower platforms of both the second and fourth platforms are equipped with fourth lower guide pulleys, and the lower platforms of both the second and fourth platforms are equipped with fourth winding winches. One end of the fourth intercepting cable sequentially passes through the fourth fixed intercepting pulley, the fourth upper guide pulley, the fourth lower guide pulley, and the movable pulley on the fourth piston cylinder of the second platform before connecting to the fourth winding winch of the second platform.The other end of the fourth intercepting cable passes sequentially around the fourth fixed intercepting pulley, the fourth upper guide pulley, the fourth lower guide pulley, and the movable pulley on the fourth piston cylinder of the fourth platform before connecting to the fourth winding winch of the fourth platform. A fifth fixed intercepting pulley is provided on the upper platform of both the second and fourth platforms. A fifth upper guide pulley is provided on the middle platform of both the second and fourth platforms. A fifth lower guide pulley is provided on the lower platform of both the second and fourth platforms. A fifth winding winch is provided on the lower platform of both the second and fourth platforms. One end of the fifth intercepting cable passes sequentially around the fifth fixed intercepting pulley, the fifth upper guide pulley, the fifth lower guide pulley, and the movable pulley on the fifth piston cylinder of the second platform. The fifth intercepting cable is connected to the fifth winding winch of the second platform after the wheel. The other end of the fifth intercepting cable passes sequentially around the fifth intercepting fixed pulley, the fifth upper guide pulley, the fifth lower guide pulley, and the movable pulley on the fifth piston cylinder of the fourth platform before connecting to the fifth winding winch of the fourth platform. The upper platforms of both the first and third platforms are equipped with sixth intercepting fixed pulleys. The middle platforms of both the first and third platforms are equipped with sixth upper guide pulleys. The lower platforms of both the first and third platforms are equipped with sixth winding winches. One end of the sixth intercepting cable passes sequentially around the sixth intercepting fixed pulley, the sixth upper guide pulley, and the sixth winding winch of the third platform. The sixth lower guide pulley and the movable pulley on the sixth piston cylinder are connected to the sixth winding winch of the third platform. The other end of the sixth intercepting cable passes sequentially over the sixth intercepting fixed pulley, the sixth upper guide pulley, the sixth lower guide pulley, and the movable pulley on the sixth piston cylinder of the first platform before connecting to the sixth winding winch of the first platform. The upper platforms of both the second and fourth platforms are equipped with seventh intercepting fixed pulleys. The middle platforms of both the second and fourth platforms are equipped with seventh upper guide pulleys. The lower platforms of both the second and fourth platforms are equipped with seventh lower guide pulleys. The lower platforms of both the second and fourth platforms are equipped with seventh winding winches. One end of the seventh intercepting cable passes sequentially over the second platform... The seventh intercepting fixed pulley, seventh upper guide pulley, seventh lower guide pulley, and movable pulley on the seventh piston cylinder of the platform are connected to the seventh winding winch of the second platform. The other end of the seventh intercepting cable passes sequentially around the seventh intercepting fixed pulley, seventh upper guide pulley, seventh lower guide pulley, and movable pulley on the seventh piston cylinder of the fourth platform before connecting to the seventh winding winch of the fourth platform. The upper platforms of both the first and third platforms are equipped with an eighth intercepting fixed pulley. The middle platforms of both the first and third platforms are equipped with an eighth upper guide pulley. The lower platforms of both the first and third platforms are equipped with an eighth lower guide pulley. The lower platforms of both the first and third platforms are equipped with an eighth winding winch.One end of the eighth intercepting cable sequentially passes over the eighth fixed intercepting pulley, the eighth upper guide pulley, the eighth lower guide pulley, and the movable pulley on the eighth piston cylinder of the third platform before connecting to the eighth winding-up winch of the third platform. The other end of the eighth intercepting cable sequentially passes over the eighth fixed intercepting pulley, the eighth upper guide pulley, the eighth lower guide pulley, and the movable pulley on the eighth piston cylinder of the first platform before connecting to the eighth winding-up winch of the first platform.

[0009] The rocket capture system of the present invention includes a first buffer mechanism, which is a first take-up and release winch. The first take-up and release winch at the first platform is mounted on the first platform, and the first take-up and release winch at the third platform is mounted on the third platform. The second buffer mechanism is a second take-up and release winch. The second take-up and release winch at the second platform is mounted on the second platform, and the second take-up and release winch at the fourth platform is mounted on the fourth platform. The third buffer mechanism is a third take-up and release winch. The third take-up and release winch at the first platform is mounted on the first platform, and the third take-up and release winch at the third platform is mounted on the third platform. The fourth buffer mechanism is a fourth take-up and release winch. The fourth take-up and release winch at the second platform is mounted on the second platform. Above, the fourth winding winch at the fourth platform is located on the fourth platform; the fifth buffer mechanism is the fifth winding winch; the fifth winding winch at the second platform is located on the second platform; the fifth winding winch at the fourth platform is located on the fourth platform; the sixth buffer mechanism is the sixth winding winch; the sixth winding winch at the first platform is located on the first platform; the sixth winding winch at the third platform is located on the third platform; the seventh buffer mechanism is the seventh winding winch; the seventh winding winch at the second platform is located on the second platform; the seventh winding winch at the fourth platform is located on the fourth platform; the eighth buffer mechanism is the eighth winding winch; the fifth winding winch at the first platform is located on the fourth platform. The eighth winding winch is located on the first platform, and the eighth winding winch at the third platform is located on the third platform. One end of the first intercepting cable is connected to the first winding winch on the first platform, and the other end of the first intercepting cable is connected to the first winding winch on the third platform. One end of the second intercepting cable is connected to the second winding winch on the second platform, and the other end of the second intercepting cable is connected to the second winding winch on the fourth platform. One end of the third intercepting cable is connected to the third winding winch on the first platform, and the other end of the third intercepting cable is connected to the third winding winch on the third platform. One end of the fourth intercepting cable is connected to the fourth winding winch on the second platform, and the other end of the fourth intercepting cable... One end of the fifth intercepting cable is connected to the fourth winding winch on the fourth platform; one end of the fifth intercepting cable is connected to the fifth winding winch on the second platform; the other end of the fifth intercepting cable is connected to the fifth winding winch on the fourth platform; one end of the sixth intercepting cable is connected to the sixth winding winch on the third platform; the other end of the sixth intercepting cable is connected to the sixth winding winch on the first platform; one end of the seventh intercepting cable is connected to the seventh winding winch on the second platform; the other end of the seventh intercepting cable is connected to the seventh winding winch on the fourth platform; one end of the eighth intercepting cable is connected to the eighth winding winch on the third platform; the other end of the eighth intercepting cable is connected to the eighth winding winch on the first platform.

[0010] The rocket capture system of the present invention includes a first interception fixed pulley on the upper platform of both the first and third platforms, a first upper guide pulley on the middle platform of both the first and third platforms, a first lower guide pulley on the lower platform of both the first and third platforms, and a first launching winch on the lower platform of both the first and third platforms. One end of the first interception cable passes sequentially around the first interception fixed pulley, the first upper guide pulley, and the first lower guide pulley of the first platform and connects to the first launching winch of the first platform. The other end of the first interception cable passes sequentially around the first interception fixed pulley, the first upper guide pulley, and the first lower guide pulley of the third platform and connects to the first launching winch of the third platform. Both the first and fourth platforms have a second fixed intercepting pulley on their upper platforms. Both the second and fourth platforms have a second upper guide pulley on their middle platforms. Both the second and fourth platforms have a second lower guide pulley on their lower platforms. Both the second and fourth platforms have a second winding winch on their lower platforms. One end of the second intercepting cable passes sequentially around the second fixed intercepting pulley, the second upper guide pulley, and the second lower guide pulley on the second platform before connecting to the second winding winch on the second platform. The other end of the second intercepting cable passes sequentially around the second fixed intercepting pulley, the second upper guide pulley, and the second lower guide pulley on the fourth platform before connecting to the second winding winch on the fourth platform. Both the first and third platforms have a third... The first and third platforms each have a fixed intercepting pulley. A third upper guide pulley is provided on the middle platform of both the first and third platforms. A third lower guide pulley is provided on the lower platform of both the first and third platforms. A third winding winch is provided on the lower platform of both the first and third platforms. One end of the third intercepting cable passes sequentially around the third fixed intercepting pulley, the third upper guide pulley, and the third lower guide pulley of the first platform and then connects to the third winding winch of the first platform. The other end of the third intercepting cable passes sequentially around the third fixed intercepting pulley, the third upper guide pulley, and the third lower guide pulley of the third platform and then connects to the third winding winch of the third platform. A fourth fixed intercepting pulley is provided on the upper platform of both the second and fourth platforms. Each of the two platforms is equipped with a fourth upper guide pulley on its middle platform, and a fourth lower guide pulley on its lower middle platform. Each of the two platforms is equipped with a fourth winding winch on its lower lower platform. One end of the fourth intercepting cable passes sequentially around the fourth intercepting fixed pulley, the fourth upper guide pulley, and the fourth lower guide pulley on the second platform before connecting to the fourth winding winch on the second platform. The other end of the fourth intercepting cable passes sequentially around the fourth intercepting fixed pulley, the fourth upper guide pulley, and the fourth lower guide pulley on the fourth platform before connecting to the fourth winding winch on the fourth platform. Each of the two platforms is equipped with a fifth intercepting fixed pulley on its upper platform, and a fifth upper guide pulley on its middle middle platform.Both the second and fourth platforms have a fifth lower guide pulley on their lower platforms, and both platforms have a fifth winding winch on their lower platforms. One end of the fifth intercepting cable passes sequentially around the fifth intercepting fixed pulley, the fifth upper guide pulley, and the fifth lower guide pulley of the second platform before connecting to the fifth winding winch of the second platform. The other end of the fifth intercepting cable passes sequentially around the fifth intercepting fixed pulley, the fifth upper guide pulley, and the fifth lower guide pulley of the fourth platform before connecting to the fifth winding winch of the fourth platform. Both the first and third platforms have a sixth intercepting fixed pulley on their upper platforms. Each platform is equipped with a sixth upper guide pulley, and the middle and lower platforms of the first and third platforms are each equipped with a sixth lower guide pulley. The lower platforms of the first and third platforms are each equipped with a sixth winding winch. One end of the sixth intercepting cable passes sequentially around the sixth intercepting fixed pulley, the sixth upper guide pulley, and the sixth lower guide pulley of the third platform before connecting to the sixth winding winch of the third platform. The other end of the sixth intercepting cable passes sequentially around the sixth intercepting fixed pulley, the sixth upper guide pulley, and the sixth lower guide pulley of the first platform before connecting to the sixth winding winch of the first platform. The upper platforms of the second and fourth platforms are each equipped with a seventh intercepting fixed pulley. Both the second and fourth platforms have a seventh upper guide pulley on their middle platforms, and a seventh lower guide pulley on their lower middle platforms. Both platforms also have a seventh winding winch on their lower lower platforms. One end of the seventh intercepting cable passes sequentially around the seventh fixed intercepting pulley, the seventh upper guide pulley, and the seventh lower guide pulley on the second platform before connecting to the seventh winding winch. The other end of the seventh intercepting cable passes sequentially around the seventh fixed intercepting pulley, the seventh upper guide pulley, and the seventh lower guide pulley on the fourth platform before connecting to the seventh winding winch. The upper... Each platform is equipped with an eighth fixed intercepting pulley. The middle platform of both the first and third platforms is equipped with an eighth upper guide pulley. The lower platform of both the first and third platforms is equipped with an eighth lower guide pulley. The lower platform of both the first and third platforms is equipped with an eighth winding winch. One end of the eighth intercepting cable passes sequentially around the eighth fixed intercepting pulley, the eighth upper guide pulley, and the eighth lower guide pulley of the third platform before connecting to the eighth winding winch of the third platform. The other end of the eighth intercepting cable passes sequentially around the eighth fixed intercepting pulley, the eighth upper guide pulley, and the eighth lower guide pulley of the first platform before connecting to the eighth winding winch of the first platform.

[0011] This invention relates to a rocket capture system, wherein the first, second, third, and fourth guide rails each include a guide rail sleeve. An axially arranged slot is formed on the side of the guide rail sleeve. An axially arranged track is provided inside the guide rail sleeve. The track includes two opposing upper tracks and two opposing lower tracks. The slots of the first and third guide rails are opposite each other, as are the slots of the second and fourth guide rails. The first, second, third, fourth, fifth, sixth, seventh, and eighth traction vehicles each include a traction seat and a pulley seat. Upper and lower rollers are respectively provided above and below the traction seat. The pulley seat includes two interconnected upper supports. The upper and lower support plates are connected by a support plate and a lower support plate. The pulley seat is U-shaped. The connection between the upper and lower support plates is hinged to the traction seat. Two oppositely arranged pulleys are rotatably installed between the upper and lower support plates. The traction seats of the first and second traction vehicles are inserted into the groove of the guide sleeve of the first guide rail. The upper and lower rollers on the traction seats of the first and second traction vehicles are both located inside the guide sleeve of the first guide rail. The pulley seats of the first and second traction vehicles are both located outside the guide sleeve of the first guide rail. The upper rollers on the traction seats of the first and second traction vehicles are located between the two upper rails inside the guide sleeve of the first guide rail. The lower rollers on the traction seats of the first and second traction vehicles are located inside the guide sleeve of the first guide rail. Between the two lower rails, the first traction cable is fixedly connected to the traction seat of the first traction vehicle, and the second traction cable is fixedly connected to the traction seat of the second traction vehicle. The traction seats of the third and fourth traction vehicles are inserted into the grooves of the guide sleeves of the second guide rail. The upper and lower rollers on the traction seats of the third and fourth traction vehicles are both located inside the guide sleeves of the second guide rail. The pulley seats of the third and fourth traction vehicles are both located outside the guide sleeves of the second guide rail. The upper rollers on the traction seats of the third and fourth traction vehicles are located between the two upper rails inside the guide sleeves of the second guide rail, and the lower rollers on the traction seats of the third and fourth traction vehicles are located between the two lower rails inside the guide sleeves of the second guide rail. The fourth traction cable is fixedly connected to the traction seat of the third tractor. The traction seats of the fifth and sixth tractors are inserted into the slots of the guide sleeve of the third guide rail. The upper and lower rollers on the traction seats of the fifth and sixth tractors are located inside the guide sleeve of the third guide rail. The pulley seats of the fifth and sixth tractors are located outside the guide sleeve of the third guide rail. The upper rollers on the traction seats of the fifth and sixth tractors are located between the two upper rails inside the guide sleeve of the third guide rail. The lower rollers on the traction seats of the fifth and sixth tractors are located between the two lower rails inside the guide sleeve of the third guide rail. The fifth traction cable is fixedly connected to the traction seat of the fifth tractor.The sixth traction cable is fixedly connected to the traction seat of the sixth tractor. The traction seats of the seventh and eighth tractors are inserted into the slots of the guide sleeve of the fourth guide rail. The upper and lower rollers on the traction seats of the seventh and eighth tractors are both located inside the guide sleeve of the fourth guide rail. The pulley seats of the seventh and eighth tractors are both located outside the guide sleeve of the fourth guide rail. The upper rollers on the traction seats of the seventh and eighth tractors are located between the two upper rails inside the guide sleeve of the fourth guide rail. The lower rollers on the traction seats of the seventh and eighth tractors are located between the two lower rails inside the guide sleeve of the fourth guide rail. The seventh traction cable is fixedly connected to the traction seat of the seventh tractor, and the eighth traction cable is fixedly connected to the traction seat of the eighth tractor.

[0012] This invention relates to a rocket capture system, wherein the pulley seats of the first, second, third, fourth, fifth, sixth, seventh, and eighth tractor vehicles are each equipped with a guide cable device. Each guide cable device has a guide cable hole, and a guide wheel is circumferentially arranged around the guide cable hole. The guide wheel is mounted on the guide cable device. The first and second tractor vehicles are arranged along a direction from the first platform to the second platform. The third intercepting cable passes through the guide cable hole on the guide cable device of the first tractor vehicle, and the second intercepting cable passes through the guide cable hole on the guide cable device of the second tractor vehicle. The third and fourth tractor vehicles are arranged along a direction from the second platform to the third platform, and the seventh intercepting cable passes through the guide cable hole on the guide cable device of the third tractor vehicle. The sixth intercepting cable... The fifth and sixth tractors are arranged along the direction from the third platform to the fourth platform, with the first intercepting cable passing through the guide hole on the guide cable of the fifth tractor and the fourth intercepting cable passing through the guide hole on the guide cable of the sixth tractor. The seventh and eighth tractors are arranged along the direction from the fourth platform to the first platform, with the fifth intercepting cable passing through the guide hole on the guide cable of the seventh tractor and the eighth intercepting cable passing through the guide hole on the guide cable of the eighth tractor. A guide wheel is provided above and below the guide cable hole, and a vertically arranged guide wheel is provided on each of the opposite sides of one end of the guide cable hole. A vertically arranged guide wheel is also provided on each of the opposite sides of the other end of the guide cable hole.

[0013] The rocket capture system of the present invention includes two upper and two lower rollers on each of the first, second, third, fourth, fifth, sixth, seventh, and eighth tractor vehicles. Each upper and lower roller has a circumferentially arranged rolling groove. The upper rollers of the first and second tractor vehicles are engaged with two upper rails within the guide sleeve of the first guide rail via their rolling grooves. Similarly, the lower rollers of the first and second tractor vehicles are engaged with two lower rails within the guide sleeve of the first guide rail via their rolling grooves. The upper rollers of the third and fourth tractor vehicles are engaged with two upper rails within the guide sleeve of the second guide rail via their rolling grooves. The lower rollers of the third and fourth tractor vehicles are engaged with two lower rails within the guide sleeve of the second guide rail via their rolling grooves. The upper rollers of the fifth and sixth tractor vehicles are engaged with... Between the two upper rails within the guide sleeve of the third guide rail, the lower rollers of the fifth and sixth tractor vehicles are engaged with each other via their own rolling grooves. Similarly, the upper rollers of the seventh and eighth tractor vehicles are engaged with each other via their own rolling grooves within the guide sleeve of the fourth guide rail. The lower rollers of the seventh and eighth tractor vehicles are also engaged with each other via their own rolling grooves within the guide sleeve of the fourth guide rail. Each pulley of the pulley seat has guide wheels at both ends of its cable winding position. These guide wheels are installed between the upper and lower support plates of the pulley seat. The two ends of the first guide rail are fixedly connected to the first and second platforms, respectively. The two ends of the second guide rail are fixedly connected to the second and third platforms, respectively. The two ends of the third guide rail are fixedly connected to the third and fourth platforms, respectively. The two ends of the fourth guide rail are fixedly connected to the fourth and first platforms, respectively.

[0014] The rocket capture system of this invention differs from the prior art in that, during use, the platform of this rocket capture system is fixedly set on the ground, on a ship, or on other suitable sites for rocket recovery (of course, in specific settings, the platform is fixedly set on the aforementioned sites by a support frame). When the rocket stage lands in the area enclosed by the first guide rail, the second guide rail, the third guide rail, and the fourth guide rail, the first traction device, the second traction device, the third traction device, the fourth traction device, the fifth traction device, the sixth traction device, the seventh traction device, and the eighth traction device are activated. The first traction device pulls the first tractor along the first guide rail, while the sixth traction device pulls the sixth tractor along the third guide rail, causing the first and sixth tractors to move synchronously in the same direction. Thus, the first and second intercepting cables located between the first and sixth tractors begin to translate along the first and third guide rails. The second traction device pulls the second tractor along the first guide rail, while the fifth traction device pulls the fifth tractor along the third guide rail, causing the second and fifth tractors to move synchronously in the same direction. Thus, the third and fourth intercepting cables located between the second and fifth tractors begin to translate along the first and third guide rails. The third traction device pulls the third tractor along the second guide rail, while the eighth traction device pulls the eighth tractor along the fourth guide rail, causing the third and eighth tractors to move synchronously in the same direction. As a result, the fifth and sixth intercepting cables located between the third and eighth tractors begin to translate along the second and fourth guide rails. The fourth traction device pulls the fourth tractor along the second guide rail, while the seventh traction device pulls the seventh tractor along the fourth guide rail, causing the fourth and seventh tractors to move synchronously in the same direction. As a result, the seventh and eighth intercepting cables located between the fourth and seventh tractors begin to translate along the second and fourth guide rails. Based on the landing point of the rocket stage, the first, second, third, and fourth intercepting cables are moved to the perimeter of the rocket stage, placing it within the square area enclosed by the first / second, third / fourth, fifth / sixth, and seventh / eighth intercepting cables. As the rocket stage gradually descends, the intercepting cables are brought closer until the arresting hooks on the rocket stage engage the intercepting cables (arresting hooks are installed around the rocket stage body for recovery). Under the weight of the rocket stage, the ends of the intercepting cables pull the buffer mechanisms, which gradually reduce the rocket stage's descent speed until it stops moving downwards, thus completing the capture of the rocket stage.Since the intercepting cable in this invention is located around the rocket stage during rocket recovery, even if the rocket stage's attitude and speed do not reach the ideal state for recovery, the intercepting cable can easily hook onto the rocket stage and complete the capture. Therefore, this invention can reduce the requirements for the attitude and speed of rocket recovery and improve the success rate of rocket recovery.

[0015] The invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a top view of a first embodiment of the rocket capture system of the present invention;

[0017] Figure 2 for Figure 1 A magnified view of a section of the first platform in China;

[0018] Figure 3 for Figure 1 A magnified view of a portion of the second platform in the middle;

[0019] Figure 4 for Figure 1 A magnified view of a portion of the third platform in China;

[0020] Figure 5 for Figure 1 A magnified view of a portion of the fourth platform in China;

[0021] Figure 6 for Figure 1 Enlarged view of the first and second tractor units;

[0022] Figure 7 for Figure 1 Enlarged views of the third and fourth tractor units;

[0023] Figure 8 for Figure 1 Enlarged views of the fifth and sixth tractor units;

[0024] Figure 9 for Figure 1 Enlarged view of the seventh and eighth tractor units;

[0025] Figure 10 This is a perspective view of a first embodiment of the rocket capture system of the present invention;

[0026] Figure 11 This is a perspective view of a first embodiment of the rocket capture system of the present invention (with the first guide rail, second guide rail, third guide rail, and fourth guide rail hidden);

[0027] Figure 12 for Figure 11 A magnified view of a section of the first platform in China;

[0028] Figure 13 for Figure 11 A magnified view of a portion of the second platform in the middle;

[0029] Figure 14 for Figure 11 A magnified view of a portion of the third platform in China;

[0030] Figure 15 for Figure 11 A magnified view of a portion of the fourth platform in China;

[0031] Figure 16 for Figure 11 Enlarged view of the first and second tractor units;

[0032] Figure 17 for Figure 11 Enlarged views of the third and fourth tractor units;

[0033] Figure 18 for Figure 11 Enlarged views of the fifth and sixth tractor units;

[0034] Figure 19 for Figure 11 Enlarged view of the seventh and eighth tractor units;

[0035] Figure 20 This is a top view of the first tractor unit in Embodiment 1 of the rocket capture system of the present invention (and also a top view of the second, third, fourth, fifth, sixth, seventh and eighth tractor units).

[0036] Figure 21 This is a front view of the first tractor unit in Embodiment 1 of the rocket capture system of the present invention (which is also a front view of the second, third, fourth, fifth, sixth, seventh and eighth tractor units).

[0037] Figure 22 For along Figure 21 Sectional view of line AA in the middle;

[0038] Figure 23 For along Figure 21 Sectional view of the middle BB line;

[0039] Figure 24 This is a perspective view of the first tractor unit in Embodiment 1 of the rocket capture system of the present invention (and also a perspective view of the second, third, fourth, fifth, sixth, seventh and eighth tractor units).

[0040] Figure 25This is another perspective view of the first tractor in Embodiment 1 of the rocket capture system of the present invention (and also another perspective view of the second, third, fourth, fifth, sixth, seventh and eighth tractor vehicles).

[0041] Figure 26 This is a schematic diagram of the structure of the first and second intercepting cables bypassing the first / sixth tractor in the first embodiment of the rocket capture system of the present invention (it is also a schematic diagram of the structure of the third and fourth intercepting cables bypassing the second / fifth tractor, the fifth and sixth intercepting cables bypassing the third / eighth tractor, and the seventh and eighth intercepting cables bypassing the fourth / seventh tractor).

[0042] Figure 27 This is a schematic diagram of the structure of the rocket capture system of the present invention, in which the first tractor / second tractor is installed on the first guide rail (and also a schematic diagram of the structure of the third tractor / fourth tractor installed on the second guide rail, the fifth tractor / sixth tractor installed on the third guide rail, and the seventh tractor / eighth tractor installed on the fourth guide rail);

[0043] Figure 28 This is another structural schematic diagram of the rocket capture system of the present invention, in which the first tractor / second tractor is installed on the first guide rail (and also another structural schematic diagram of the third tractor / fourth tractor installed on the second guide rail, the fifth tractor / sixth tractor installed on the third guide rail, and the seventh tractor / eighth tractor installed on the fourth guide rail);

[0044] Figure 29 This is a schematic diagram of the piston cylinder in Embodiment 1 of the rocket capture system of the present invention;

[0045] Figure 30 This is a schematic diagram of the internal structure of the piston cylinder in Embodiment 1 of the rocket capture system of the present invention (the honeycomb aluminum is not compressed);

[0046] Figure 31 This is a schematic diagram of the internal structure of the piston cylinder in Embodiment 1 of the rocket capture system of the present invention (the honeycomb aluminum is compressed);

[0047] Figure 32 This is a perspective view of a second embodiment of the rocket capture system of the present invention (with the first guide rail, second guide rail, third guide rail, and fourth guide rail hidden);

[0048] Figure 33 for Figure 32 A magnified view of a section at point C;

[0049] Figure 34 for Figure 32 A magnified view of a section at point D;

[0050] Figure 35 for Figure 32 A magnified view of a section at point E in the middle;

[0051] Figure 36 for Figure 32 A magnified view of a section at point F. Detailed Implementation

[0052] Example 1

[0053] like Figure 1 As shown, and in combination Figures 2-31 As shown, the rocket capture system of the present invention includes a first platform 1, a second platform 2, a third platform 3, and a fourth platform 4. A first guide rail 5 is provided between the first platform 1 and the second platform 2, a second guide rail 6 is provided between the second platform 2 and the third platform 3, a third guide rail 7 is provided between the third platform 3 and the fourth platform 4, and a fourth guide rail 8 is provided between the fourth platform 4 and the first platform 1. The first guide rail 5, the second guide rail 6, the third guide rail 7, and the fourth guide rail 8 are arranged in a rectangular shape. A first tractor 9 and a second tractor 10 are mounted on the first guide rail 5, a third tractor 11 and a fourth tractor 12 are mounted on the second guide rail 6, a fifth tractor 13 and a sixth tractor 14 are mounted on the third guide rail 7, and a seventh tractor 15 and an eighth tractor 16 are mounted on the fourth guide rail 8. A first traction device and a second traction device are provided between the first platform 1 and the second platform 2. The first traction device and the second traction device respectively pull the first tractor 9 and the second tractor 10 to move on the first guide rail 5. A third traction device and a fourth traction device are provided between the second platform 2 and the third platform 3. The third traction device and the fourth traction device respectively pull the third tractor 11 and the fourth tractor 12 to move on the second guide rail 6. A fifth traction device and a sixth traction device are provided between the third platform 3 and the fourth platform 4. The fifth traction device and the sixth traction device respectively pull the fifth tractor 13 and the sixth tractor 14 to move on the third guide rail 7. A seventh traction device and an eighth traction device are provided between the fourth platform 4 and the first platform 1. The seventh traction device and the eighth traction device respectively pull the seventh tractor 15 and the eighth tractor 16 to move on the fourth guide rail 8.

[0054] Each of the following vehicles—the first tractor 9, the second tractor 10, the third tractor 11, the fourth tractor 12, the fifth tractor 13, the sixth tractor 14, the seventh tractor 15, and the eighth tractor 16—has two opposing pulleys 46 rotatably mounted on them. A first intercepting cable 26 and a second intercepting cable 41 connect the first tractor 9 and the sixth tractor 14. One end of the first intercepting cable 26 passes over one pulley 46 of the first tractor 9 and connects to a first buffer mechanism at the first platform 1. The other end of the first intercepting cable 26 passes over one pulley 46 of the sixth tractor 14 and connects to a first buffer mechanism at the third platform 3. One end of the second intercepting cable 41 passes over the other pulley 46 of the first tractor 9 and connects to a second buffer mechanism at the second platform 2. The other end of the second intercepting cable 41 passes over the other pulley 46 of the sixth tractor 14 and connects to a second buffer mechanism at the fourth platform 4. A third intercepting cable 27 and a fourth intercepting cable 42 are connected between the second tractor 10 and the fifth tractor 13. One end of the third intercepting cable 27 passes around a pulley 46 of the second tractor 10 and is connected to the third buffer mechanism at the first platform 1. The other end of the third intercepting cable 27 passes around a pulley 46 of the fifth tractor 13 and is connected to the third buffer mechanism at the third platform 3. One end of the fourth intercepting cable 42 passes around another pulley 46 of the second tractor 10 and is connected to the fourth buffer mechanism at the second platform 2. The other end of the fourth intercepting cable 42 passes around another pulley 46 of the fifth tractor 13 and is connected to the fourth buffer mechanism at the fourth platform 4. A fifth intercepting cable 40 and a sixth intercepting cable 32 are connected between the third tractor 11 and the eighth tractor 16. One end of the fifth intercepting cable 40 passes over a pulley 46 of the third tractor 11 and connects to the fifth buffer mechanism at the second platform 2. The other end of the fifth intercepting cable 40 passes over a pulley 46 of the eighth tractor 16 and connects to the fifth buffer mechanism at the fourth platform 4. One end of the sixth intercepting cable 32 passes over another pulley 46 of the third tractor 11 and connects to the sixth buffer mechanism at the third platform 3. The other end of the sixth intercepting cable 32 passes over another pulley 46 of the eighth tractor 16 and connects to the sixth buffer mechanism at the first platform 1. A seventh intercepting cable 39 and an eighth intercepting cable 31 are connected between the fourth tractor 12 and the seventh tractor 15. One end of the seventh intercepting cable 39 passes around a pulley 46 of the fourth tractor 12 and is connected to the seventh buffer mechanism at the second platform 2. The other end of the seventh intercepting cable 39 passes around a pulley 46 of the seventh tractor 15 and is connected to the seventh buffer mechanism at the fourth platform 4. One end of the eighth intercepting cable 31 passes around another pulley 46 of the fourth tractor 12 and is connected to the eighth buffer mechanism at the third platform 3. The other end of the eighth intercepting cable 31 passes around another pulley 46 of the seventh tractor 15 and is connected to the eighth buffer mechanism at the first platform 1.The first intercepting cable 26 and the second intercepting cable 41 between the first tractor 9 and the sixth tractor 14 are parallel to the third intercepting cable 27 and the fourth intercepting cable 42 between the second tractor 10 and the fifth tractor 13, and the fifth intercepting cable 40 and the sixth intercepting cable 32 between the third tractor 11 and the eighth tractor 16 are parallel to the seventh intercepting cable 39 and the eighth intercepting cable 31 between the fourth tractor 12 and the seventh tractor 15.

[0055] like Figure 10 , Figure 11As shown, when the rocket capture system of the present invention is in use, the platform is fixedly set on the ground, on a ship or other suitable site for rocket recovery (of course, in specific settings, the platform is fixedly set on the above-mentioned site by a support frame). When the rocket stage 17 lands in the area enclosed by the first guide rail 5, the second guide rail 6, the third guide rail 7 and the fourth guide rail 8, the first traction device, the second traction device, the third traction device, the fourth traction device, the fifth traction device, the sixth traction device, the seventh traction device and the eighth traction device are activated. The first traction device pulls the first tractor 9 along the first guide rail 5. Simultaneously, the sixth traction device pulls the sixth tractor 14 along the third guide rail 7, causing the first tractor 9 and the sixth tractor 14 to move synchronously in the same direction. Therefore, the first intercepting cable 26 and the second intercepting cable 41, located between the first tractor 9 and the sixth tractor 14, begin to translate along the first guide rail 5 and the third guide rail 7. The second traction device pulls the second tractor 10 along the first guide rail 5. Simultaneously, the fifth traction device pulls the fifth tractor 13 along the third guide rail 7, causing the second tractor 10 and the fifth tractor 13 to move synchronously in the same direction. Therefore, the third intercepting cable 27 and the fourth intercepting cable 42, located between the second tractor 10 and the fifth tractor 13, begin to translate along the first guide rail 5 and the third guide rail 7. The three traction devices pull the third tractor 11 along the second guide rail 6. At the same time, the eighth traction device pulls the eighth tractor 16 along the fourth guide rail 8, and the third tractor 11 and the eighth tractor 16 move synchronously in the same direction. As a result, the fifth intercepting cable 40 and the sixth intercepting cable 32, located between the third tractor 11 and the eighth tractor 16, begin to translate along the second guide rail 6 and the fourth guide rail 8. The fourth traction device pulls the fourth tractor 12 along the second guide rail 6. At the same time, the seventh traction device pulls the seventh tractor 15 along the fourth guide rail 8, and the fourth tractor 12 and the seventh tractor 15 move synchronously in the same direction. As a result, the seventh intercepting cable 39 and the eighth intercepting cable 31, located between the fourth tractor 12 and the seventh tractor 15, begin to translate along the second guide rail 6 and the fourth guide rail 8.Based on the landing point of rocket stage 17, the first intercepting cable 26, the second intercepting cable 41, the third intercepting cable 27, and the fourth intercepting cable 42 are moved to the perimeter of rocket stage 17. That is, rocket stage 17 is located within the square area enclosed by the first intercepting cable 26 / second intercepting cable 41, third intercepting cable 27 / fourth intercepting cable 42, fifth intercepting cable 40 / sixth intercepting cable 32, and seventh intercepting cable 39 / eighth intercepting cable 31. As rocket stage 17 gradually falls, the aforementioned intercepting cables are gradually moved closer to rocket stage 17 until the arresting hooks 18 on rocket stage 17 are hooked onto the intercepting cables (arresting hooks 18 are provided around the rocket stage 17 to complete the recovery). Under the action of the rocket stage 17's own weight, the two ends of the intercepting cables pull the buffer mechanism. Under the buffering effect of the buffer mechanism, the falling speed of rocket stage 17 gradually decreases until it stops moving downward, thus completing the capture of rocket stage 17. Since the intercepting cable in this invention is located around the rocket stage 17 during rocket recovery, even if the attitude and speed of the rocket stage 17 do not reach the ideal state for recovery, the intercepting cable can easily hook the rocket stage 17 and complete the capture. Therefore, this invention can reduce the requirements for the attitude and speed of rocket recovery and improve the success rate of rocket recovery.

[0056] like Figure 10 As shown, and in combination Figures 11-19 , Figures 1-9As shown, the first traction device includes two first traction winches 56, which are respectively mounted on the first platform 1 and the second platform 2. A first traction cable 19 connects the two first traction winches 56, and the first traction vehicle 9 is fixedly connected to the first traction cable 19. The second traction device includes two second traction winches 55, which are respectively mounted on the first platform 1 and the second platform 2. A second traction cable 20 connects the two second traction winches 55, and the second traction vehicle 10 is fixedly connected to the second traction cable 20. The third traction device includes two third traction winches 76, which are respectively mounted on the second platform 2 and the third platform 3. A third traction cable 36 connects the two third traction winches 76, and the third traction vehicle 11 is fixedly connected to the third traction cable 36. The fourth traction device includes two fourth traction winches 75, which are respectively mounted on the second platform 2 and the third platform 3. A fourth traction cable 35 connects the two fourth traction winches 75, and the fourth traction vehicle 12 is fixedly connected to the fourth traction cable 35. The fifth traction device includes two fifth traction winches 93, which are respectively mounted on the third platform 3 and the fourth platform 4. A fifth traction cable 45 connects the two fifth traction winches 93, and the fifth traction vehicle 13 is fixedly connected to the fifth traction cable 45. The sixth traction device includes two sixth traction winches 94, which are respectively mounted on the third platform 3 and the fourth platform 4. A sixth traction cable 44 connects the two sixth traction winches 94, and the sixth traction vehicle 14 is fixedly connected to the sixth traction cable 44. The seventh traction device includes two seventh traction winches 57, which are respectively mounted on the fourth platform 4 and the first platform 1. A seventh traction cable 21 connects the two seventh traction winches 57, and the seventh traction vehicle 15 is fixedly connected to the seventh traction cable 21. The eighth traction device includes two eighth traction winches 58, which are respectively mounted on the fourth platform 4 and the first platform 1. An eighth traction cable 22 connects the two eighth traction winches 58, and the eighth traction vehicle 16 is fixedly connected to the eighth traction cable 22.

[0057] Under the action of the two first traction winches 56, one of the first traction winches 56 rotates to wind the first traction cable 19 onto its own drum, while the other first traction winch 56 rotates to release the first traction cable 19 from its own drum. In this way, the first traction cable 19 will gradually move from the first traction winch 56 that releases the cable to the first traction winch 56 that retracts the cable. As a result, the first traction vehicle 9, which is fixedly connected to the first traction cable 19, also moves along the first guide rail 5. Thus, the two first traction winches 56 of the first traction device can pull the first traction vehicle 9 to move on the first guide rail 5 through the first traction cable 19. The working principle of the second traction device pulling the second tractor 10 on the first guide rail 5, the third traction device pulling the third tractor 11 on the second guide rail 6, the fourth traction device pulling the fourth tractor 12 on the second guide rail 6, the fifth traction device pulling the fifth tractor 13 on the third guide rail 7, the sixth traction device pulling the sixth tractor 14 on the third guide rail 7, the seventh traction device pulling the seventh tractor 15 on the fourth guide rail 8, and the eighth traction device pulling the eighth tractor 16 on the fourth guide rail 8 are the same as the working principle of the first traction device pulling the first tractor 9 on the first guide rail 5, so they will not be described again here.

[0058] like Figure 10 As shown, and in combination Figures 11-15 , Figures 29-31As shown, the first, second, third, fourth, fifth, sixth, seventh, and eighth buffer mechanisms all include a winch and a piston cylinder. The piston cylinder includes a cylinder body 108, a piston 110, and a piston rod 107. The piston 110 is housed inside the cylinder body 108. The lower end of the piston rod 107 is fixedly connected to the piston 110. The upper end of the piston rod 107 extends through the cylinder body 108 to the outside of the cylinder body 108. A movable pulley 106 is provided at the upper end of the piston rod 107. A honeycomb aluminum 109 is provided inside the cylinder body 108, and the honeycomb aluminum 109 is located above the piston 110. The first buffer mechanism has a first winch 67 and a first piston cylinder 71, the second buffer mechanism has a second winch 85 and a second piston cylinder 89, the third buffer mechanism has a third winch 68 and a third piston cylinder 72, the fourth buffer mechanism has a fourth winch 86 and a fourth piston cylinder 90, the fifth buffer mechanism has a fifth winch 88 and a fifth piston cylinder 92, the sixth buffer mechanism has a sixth winch 70 and a sixth piston cylinder 74, the seventh buffer mechanism has a seventh winch 87 and a seventh piston cylinder 91, and the eighth buffer mechanism has an eighth winch 69 and an eighth piston cylinder 73. The first winding winch 67 of the first buffer mechanism at the first platform 1 is mounted on the first platform 1, and the first piston cylinder 71 of the first buffer mechanism at the first platform 1 is fixedly mounted below the first platform 1. The first winding winch 67 of the first buffer mechanism at the third platform 3 is mounted on the third platform 3, and the first piston cylinder 71 of the first buffer mechanism at the third platform 3 is fixedly mounted below the third platform 3. The second winding winch 85 of the second buffer mechanism at the second platform 2 is mounted on the second platform 2, and the second piston cylinder 89 of the second buffer mechanism at the second platform 2 is fixedly mounted below the second platform 2. The second winding winch 85 of the second buffer mechanism at the fourth platform 4 is mounted on the fourth platform 4, and the second piston cylinder 89 of the second buffer mechanism at the fourth platform 4 is fixedly mounted below the fourth platform 4. The third winch 68 of the third buffer mechanism at the first platform 1 is located on the first platform 1, and the third piston cylinder 72 of the third buffer mechanism at the first platform 1 is fixedly located below the first platform 1. The third winch 68 of the third buffer mechanism at the third platform 3 is located on the third platform 3, and the third piston cylinder 72 of the third buffer mechanism at the third platform 3 is fixedly located below the third platform 3.The fourth winch 86 of the fourth buffer mechanism at the second platform 2 is mounted on the second platform 2, and the fourth piston cylinder 90 of the fourth buffer mechanism at the second platform 2 is fixedly mounted below the second platform 2. Similarly, the fourth winch 86 of the fourth buffer mechanism at the fourth platform 4 is mounted on the fourth platform 4, and the fourth piston cylinder 90 of the fourth buffer mechanism at the fourth platform 4 is fixedly mounted below the fourth platform 4. The fifth winch 88 of the fifth buffer mechanism at the second platform 2 is mounted on the second platform 2, and the fifth piston cylinder 92 of the fifth buffer mechanism at the second platform 2 is fixedly mounted below the second platform 2. Likewise, the fifth winch 88 of the fifth buffer mechanism at the fourth platform 4 is mounted on the fourth platform 4, and the fifth piston cylinder 92 of the fifth buffer mechanism at the fourth platform 4 is fixedly mounted below the fourth platform 4. The sixth winch 70 of the sixth buffer mechanism at the first platform 1 is mounted on the first platform 1, and the sixth piston cylinder 74 of the sixth buffer mechanism at the first platform 1 is fixedly mounted below the first platform 1. The sixth winch 70 of the sixth buffer mechanism at the third platform 3 is mounted on the third platform 3, and the sixth piston cylinder 74 of the sixth buffer mechanism at the third platform 3 is fixedly mounted below the third platform 3. The seventh winch 87 of the seventh buffer mechanism at the second platform 2 is mounted on the second platform 2, and the seventh piston cylinder 91 of the seventh buffer mechanism at the second platform 2 is fixedly mounted below the second platform 2. The seventh winch 87 of the seventh buffer mechanism at the fourth platform 4 is mounted on the fourth platform 4, and the seventh piston cylinder 91 of the seventh buffer mechanism at the fourth platform 4 is fixedly mounted below the fourth platform 4. The eighth winch 69 of the eighth buffer mechanism at the first platform 1 is located on the first platform 1, and the eighth piston cylinder 73 of the eighth buffer mechanism at the first platform 1 is fixedly located below the first platform 1. The eighth winch 69 of the eighth buffer mechanism at the third platform 3 is located on the third platform 3, and the eighth piston cylinder 73 of the eighth buffer mechanism at the third platform 3 is fixedly located below the third platform 3.

[0059] In this embodiment, the first piston cylinder 71 being fixedly disposed below the first platform 1 / third platform 3 means that the cylinder body 108 of the first piston cylinder 71 is fixedly disposed on the ground, a ship or other suitable site for rocket recovery (of course, in specific installation, the cylinder body 108 of the first piston cylinder 71 is fixedly disposed on the above-mentioned site by a support frame), and the first piston cylinder 71 is located below the first platform 1 / third platform 3. The second piston cylinder 89, the third piston cylinder 72, the fourth piston cylinder 90, the fifth piston cylinder 92, the sixth piston cylinder 74, the seventh piston cylinder 91, and the eighth piston cylinder 73 are arranged in the same way as the first piston cylinder 71. That is, the second piston cylinder 89 to the eighth piston cylinder 73 are also fixedly installed on the ground, on a ship, or other suitable site for rocket recovery via their own cylinder bodies 108. In specific installation, the cylinder bodies 108 can be fixedly installed on the above-mentioned site by a support frame, with the second piston cylinder 89 located below the second platform 2 / fourth platform 4, the third piston cylinder 72 located below the first platform 1 / third platform 3, the fourth piston cylinder 90 located below the second platform 2 / fourth platform 4, the fifth piston cylinder 92 located below the second platform 2 / fourth platform 4, the sixth piston cylinder 74 located below the first platform 1 / third platform 3, the seventh piston cylinder 91 located below the second platform 2 / fourth platform 4, and the eighth piston cylinder 73 located below the first platform 1 / third platform 3.

[0060] like Figure 11 As shown, and in combination Figures 12-19As shown, one end of the first intercepting cable 26 passes over the movable pulley 106 on the first piston cylinder 71 below the first platform 1 and connects to the first take-up and release winch 67 on the first platform 1. The other end of the first intercepting cable 26 passes over the movable pulley 106 on the first piston cylinder 71 below the third platform 3 and connects to the first take-up and release winch 67 on the third platform 3. One end of the second intercepting cable 41 passes over the movable pulley 106 on the second piston cylinder 89 below the second platform 2 and connects to the second take-up and release winch 85 on the second platform 2. The other end of the second intercepting cable 41 passes over the movable pulley 106 on the second piston cylinder 89 below the fourth platform 4 and connects to the second take-up and release winch 85 on the fourth platform 4. One end of the third intercepting cable 27 passes over the movable pulley 106 on the third piston cylinder 72 below the first platform 1 and connects to the third take-up and release winch 68 on the first platform 1. The other end of the third intercepting cable 27 passes over the movable pulley 106 on the third piston cylinder 72 below the third platform 3 and connects to the third take-up and release winch 68 on the third platform 3. One end of the fourth intercepting cable 42 passes over the movable pulley 106 on the fourth piston cylinder 90 below the second platform 2 and connects to the fourth take-up and release winch 86 on the second platform 2. The other end of the fourth intercepting cable 42 passes over the movable pulley 106 on the fourth piston cylinder 90 below the fourth platform 4 and connects to the fourth take-up and release winch 86 on the fourth platform 4. One end of the fifth intercepting cable 40 passes over the movable pulley 106 on the fifth piston cylinder 92 below the second platform 2 and connects to the fifth take-up and release winch 88 on the second platform 2. The other end of the fifth intercepting cable 40 passes over the movable pulley 106 on the fifth piston cylinder 92 below the fourth platform 4 and connects to the fifth take-up and release winch 88 on the fourth platform 4. One end of the sixth intercepting cable 32 passes over the movable pulley 106 on the sixth piston cylinder 74 below the third platform 3 and connects to the sixth take-up and release winch 70 on the third platform 3. The other end of the sixth intercepting cable 32 passes over the movable pulley 106 on the sixth piston cylinder 74 below the first platform 1 and connects to the sixth take-up and release winch 70 on the first platform 1. One end of the seventh intercepting cable 39 passes over the movable pulley 106 on the seventh piston cylinder 91 below the second platform 2 and is connected to the seventh take-up and release winch 87 on the second platform 2. The other end of the seventh intercepting cable 39 passes over the movable pulley 106 on the seventh piston cylinder 91 below the fourth platform 4 and is connected to the seventh take-up and release winch 87 on the fourth platform 4. One end of the eighth intercepting cable 31 passes over the movable pulley 106 on the eighth piston cylinder 73 below the third platform 3 and is connected to the eighth take-up and release winch 69 on the third platform 3. The other end of the eighth intercepting cable 31 passes over the movable pulley 106 on the eighth piston cylinder 73 below the first platform 1 and is connected to the eighth take-up and release winch 69 on the first platform 1.

[0061] After the arresting hook 18 of rocket stage 17 is attached to the arresting cable, the rocket stage 17, under its own weight, pulls the arresting cable downwards to the middle position. Since the piston cylinder body 108 is fixed on the ground, ship, or other suitable site for rocket recovery, both ends of the arresting cable pull the piston rod 107 of the piston cylinder upwards. The piston 110 moves upwards and compresses the honeycomb aluminum 109 to provide a buffering effect (e.g., Figure 30 , Figure 31 As shown in the diagram, during this process, the take-up and release winches are in a braked state, meaning the drums of the winches do not rotate. As the rocket stage 17 continues to move downwards and the piston rod 107 continues to move upwards, driving the piston 110 to continue compressing the honeycomb aluminum 109, until both the rocket stage 17 and the piston rod 107 stop moving, the take-up and release winches are activated to release the arresting cable on their drums in order to lower the rocket stage 17 to the ground, a ship, or other suitable site for rocket recovery. As the arresting cable is released, the rocket stage 17 gradually moves downwards until it is lowered to the ground, a ship, or other suitable site for rocket recovery. Of course, when lowering the rocket stage 17 to the ground, a ship, or other suitable site for rocket recovery, the speed of each take-up and release winch can be adjusted according to the actual situation to keep the rocket stage 17 horizontal during the descent and prevent it from tipping over.

[0062] like Figure 11 As shown, and in combination Figures 12-19 , Figures 1-9As shown, the first platform 1, the second platform 2, the third platform 3 and the fourth platform 4 each include an upper platform 48, a middle platform and a lower platform 52 arranged from top to bottom. The middle platform includes a middle upper platform 49, a middle middle platform 50 and a middle lower platform 51 arranged from top to bottom. A first traction winch 56 and a second traction winch 55 are both provided on the upper platform 49 of the first platform 1 and the second platform 2. A first fixed pulley frame 23 is provided on the upper platform 48 of the first platform 1 and the second platform 2. Two fixed pulleys are installed on each of the two first fixed pulley frames 23. One end of the first traction cable 19 passes over one fixed pulley on the first fixed pulley frame 23 of the first platform 1 and is connected to the first traction winch 56 of the first platform 1. One end of the second traction cable 20 passes over the other fixed pulley on the first fixed pulley frame 23 of the first platform 1 and is connected to the second traction winch 55 of the first platform 1. The other end of the first traction cable 19 passes over one fixed pulley on the first fixed pulley frame 23 of the second platform 2 and is connected to the first traction winch 56 of the second platform 2. The other end of the second traction cable 20 passes over the other fixed pulley on the first fixed pulley frame 23 of the second platform 2 and is connected to the second traction winch 55 of the second platform 2. Both the second platform 2 and the third platform 3 have a third traction winch 76 and a fourth traction winch 75 on their upper platforms 49. Both the second platform 2 and the third platform 3 have a second fixed pulley frame on their upper platforms 48. Each of the two second fixed pulley frames has two fixed pulleys. One end of the third traction cable 36 passes over one fixed pulley on the second fixed pulley frame of the second platform 2 and is connected to the third traction winch 76 of the second platform 2. One end of the fourth traction cable 35 passes over the other fixed pulley on the second fixed pulley frame of the second platform 2 and is connected to the fourth traction winch 75 of the second platform 2. The other end of the third traction cable 36 passes over one fixed pulley on the second fixed pulley frame of the third platform 3 and is connected to the third traction winch 76 of the third platform 3. The other end of the fourth traction cable 35 passes over the other fixed pulley on the second fixed pulley frame of the third platform 3 and is connected to the fourth traction winch 75 of the third platform 3.Both the third platform 3 and the fourth platform 4 have a fifth traction winch 93 and a sixth traction winch 94 on their upper platforms 49. Both the third platform 3 and the fourth platform 4 have a third fixed pulley frame 43 on their upper platforms 48. Each of the two third fixed pulley frames 43 has two fixed pulleys installed on it. One end of the fifth traction cable 45 passes over one fixed pulley on the third fixed pulley frame 43 of the third platform 3 and connects to the fifth traction winch 93 of the third platform 3. One end of the sixth traction cable 44 passes over the other fixed pulley on the third fixed pulley frame 43 of the third platform 3 and connects to the sixth traction winch 94 of the third platform 3. The other end of the fifth traction cable 45 passes over one fixed pulley on the third fixed pulley frame 43 of the fourth platform 4 and connects to the fifth traction winch 93 of the fourth platform 4. The other end of the sixth traction cable 44 passes over the other fixed pulley on the third fixed pulley frame 43 of the fourth platform 4 and connects to the sixth traction winch 94 of the fourth platform 4. Both the fourth platform 4 and the upper platform 49 of the first platform 1 are equipped with a seventh traction winch 57 and an eighth traction winch 58. Both the fourth platform 4 and the upper platform 48 of the first platform 1 are equipped with a fourth fixed pulley frame 24. Each of the two fourth fixed pulley frames 24 is equipped with two fixed pulleys. One end of the seventh traction cable 21 passes over one fixed pulley on the fourth fixed pulley frame 24 of the fourth platform 4 and is connected to the seventh traction winch 57 of the fourth platform 4. One end of the eighth traction cable 22 passes over the other fixed pulley on the fourth fixed pulley frame 24 of the fourth platform 4 and is connected to the eighth traction winch 58 of the fourth platform 4. The other end of the seventh traction cable 21 passes over one fixed pulley on the fourth fixed pulley frame 24 of the first platform 1 and is connected to the seventh traction winch 57 of the first platform 1. The other end of the eighth traction cable 22 passes over the other fixed pulley on the fourth fixed pulley frame 24 of the first platform 1 and is connected to the eighth traction winch 58 of the first platform 1.

[0063] like Figure 11 As shown, and in combination Figures 12-19As shown, both the upper platform 48 of the first platform 1 and the third platform 3 are equipped with a first intercepting fixed pulley 28, both the middle platform 50 of the first platform 1 and the third platform 3 are equipped with a first upper guide pulley 60, both the middle lower platform 51 of the first platform 1 and the third platform 3 are equipped with a first lower guide pulley 63, and both the lower platform 52 of the first platform 1 and the third platform 3 are equipped with a first winding and unwinding winch 67. One end of the first intercepting cable 26 passes sequentially around the first intercepting fixed pulley 28, the first upper guide pulley 60, the first lower guide pulley 63 and the movable pulley 106 on the first piston cylinder 71 of the first platform 1 and then connects to the first winding and unwinding winch 67 of the first platform 1. The other end of the first intercepting cable 26 passes sequentially around the first intercepting fixed pulley 28, the first upper guide pulley 60, the first lower guide pulley 63 and the movable pulley 106 on the first piston cylinder 71 of the third platform 3 and then connects to the first winding and unwinding winch 67 of the third platform 3. The upper platform 48 of both the second platform 2 and the fourth platform 4 is equipped with a second fixed intercepting pulley 34. The middle platform 50 of both the second platform 2 and the fourth platform 4 is equipped with a second upper guide pulley 77. The lower platform 51 of both the second platform 2 and the fourth platform 4 is equipped with a second lower guide pulley 81. The lower platform 52 of both the second platform 2 and the fourth platform 4 is equipped with a second winding winch 85. One end of the second intercepting cable 41 passes sequentially around the second fixed intercepting pulley 34, the second upper guide pulley 77, the second lower guide pulley 81, and the movable pulley 106 on the second piston cylinder 89 of the second platform 2 and then connects to the second winding winch 85 of the second platform 2. The other end of the second intercepting cable 41 passes sequentially around the second fixed intercepting pulley 34, the second upper guide pulley 77, the second lower guide pulley 81, and the movable pulley 106 on the second piston cylinder 89 of the fourth platform 4 and then connects to the second winding winch 85 of the fourth platform 4. Both the first platform 1 and the third platform 3 have a third fixed intercepting pulley 25 on their upper platform 48. Both the first platform 1 and the third platform 3 have a third upper guide pulley 61 on their middle platform 50. Both the first platform 1 and the third platform 3 have a third lower guide pulley 64 on their middle lower platform 51. Both the first platform 1 and the third platform 3 have a third winding winch 68 on their lower platform 52. One end of the third intercepting cable 27 passes sequentially around the third fixed intercepting pulley 25, the third upper guide pulley 61, the third lower guide pulley 64, and the movable pulley 106 on the third piston cylinder 72 of the first platform 1 before connecting to the third winding winch 68 of the first platform 1. The other end of the third intercepting cable 27 passes sequentially around the third fixed intercepting pulley 25, the third upper guide pulley 61, the third lower guide pulley 64, and the movable pulley 106 on the third piston cylinder 72 of the third platform 3 before connecting to the third winding winch 68 of the third platform 3.The upper platform 48 of both the second platform 2 and the fourth platform 4 is equipped with a fourth intercepting fixed pulley 33. The middle platform 50 of both the second platform 2 and the fourth platform 4 is equipped with a fourth upper guide pulley 78. The middle lower platform 51 of both the second platform 2 and the fourth platform 4 is equipped with a fourth lower guide pulley 82. The lower platform 52 of both the second platform 2 and the fourth platform 4 is equipped with a fourth winding winch 86. One end of the fourth intercepting cable 42 passes sequentially around the fourth intercepting fixed pulley 33, the fourth upper guide pulley 78, the fourth lower guide pulley 82 and the movable pulley 106 on the fourth piston cylinder 90 of the second platform 2 and then connects to the fourth winding winch 86 of the second platform 2. The other end of the fourth intercepting cable 42 passes sequentially around the fourth intercepting fixed pulley 33, the fourth upper guide pulley 78, the fourth lower guide pulley 82 and the movable pulley 106 on the fourth piston cylinder 90 of the fourth platform 4 and then connects to the fourth winding winch 86 of the fourth platform 4. The upper platform 48 of both the second platform 2 and the fourth platform 4 is equipped with a fifth fixed intercepting pulley 37. The middle platform 50 of both the second platform 2 and the fourth platform 4 is equipped with a fifth upper guide pulley 80. The middle lower platform 51 of both the second platform 2 and the fourth platform 4 is equipped with a fifth lower guide pulley 84. The lower platform 52 of both the second platform 2 and the fourth platform 4 is equipped with a fifth winding winch 88. One end of the fifth intercepting cable 40 passes sequentially around the fifth fixed intercepting pulley 37, the fifth upper guide pulley 80, the fifth lower guide pulley 84 and the movable pulley 106 on the fifth piston cylinder 92 of the second platform 2 and then connects to the fifth winding winch 88 of the second platform 2. The other end of the fifth intercepting cable 40 passes sequentially around the fifth fixed intercepting pulley 37, the fifth upper guide pulley 80, the fifth lower guide pulley 84 and the movable pulley 106 on the fifth piston cylinder 92 of the fourth platform 4 and then connects to the fifth winding winch 88 of the fourth platform 4. The upper platform 48 of both the first platform 1 and the third platform 3 is equipped with a sixth fixed intercepting pulley 29. The middle platform 50 of both the first platform 1 and the third platform 3 is equipped with a sixth upper guide pulley 62. The middle lower platform 51 of both the first platform 1 and the third platform 3 is equipped with a sixth lower guide pulley 66. The lower platform 52 of both the first platform 1 and the third platform 3 is equipped with a sixth winding winch 70. One end of the sixth intercepting cable 32 passes sequentially around the sixth fixed intercepting pulley 29, the sixth upper guide pulley 62, the sixth lower guide pulley 66 and the movable pulley 106 on the sixth piston cylinder 74 of the third platform 3 and then connects to the sixth winding winch 70 of the third platform 3. The other end of the sixth intercepting cable 32 passes sequentially around the sixth fixed intercepting pulley 29, the sixth upper guide pulley 62, the sixth lower guide pulley 66 and the movable pulley 106 on the sixth piston cylinder 74 of the first platform 1 and then connects to the sixth winding winch 70 of the first platform 1.The upper platform 48 of both the second platform 2 and the fourth platform 4 is equipped with a seventh fixed intercepting pulley 38. The middle platform 50 of both the second platform 2 and the fourth platform 4 is equipped with a seventh upper guide pulley 79. The middle lower platform 51 of both the second platform 2 and the fourth platform 4 is equipped with a seventh lower guide pulley 83. The lower platform 52 of both the second platform 2 and the fourth platform 4 is equipped with a seventh winding winch 87. One end of the seventh intercepting cable 39 passes sequentially around the seventh fixed intercepting pulley 38, the seventh upper guide pulley 79, the seventh lower guide pulley 83 and the movable pulley 106 on the seventh piston cylinder 91 of the second platform 2 and then connects to the seventh winding winch 87 of the second platform 2. The other end of the seventh intercepting cable 39 passes sequentially around the seventh fixed intercepting pulley 38, the seventh upper guide pulley 79, the seventh lower guide pulley 83 and the movable pulley 106 on the seventh piston cylinder 91 of the fourth platform 4 and then connects to the seventh winding winch 87 of the fourth platform 4. The upper platform 48 of both the first platform 1 and the third platform 3 is equipped with an eighth fixed intercepting pulley 30. The middle platform 50 of both the first platform 1 and the third platform 3 is equipped with an eighth upper guide pulley 59. The middle lower platform 51 of both the first platform 1 and the third platform 3 is equipped with an eighth lower guide pulley 65. The lower platform 52 of both the first platform 1 and the third platform 3 is equipped with an eighth winding winch 69. One end of the eighth intercepting cable 31 passes sequentially around the eighth fixed intercepting pulley 30, the eighth upper guide pulley 59, the eighth lower guide pulley 65 and the movable pulley 106 on the eighth piston cylinder 73 of the third platform 3 and then connects to the eighth winding winch 69 of the third platform 3. The other end of the eighth intercepting cable 31 passes sequentially around the eighth fixed intercepting pulley 30, the eighth upper guide pulley 59, the eighth lower guide pulley 65 and the movable pulley 106 on the eighth piston cylinder 73 of the first platform 1 and then connects to the eighth winding winch 69 of the first platform 1.

[0064] like Figure 20 As shown, and in combination Figures 21-28As shown, the first guide rail 5, the second guide rail 6, the third guide rail 7, and the fourth guide rail 8 all include guide rail sleeves. The side of the guide rail sleeve is provided with an axially arranged slot 105. The guide rail sleeve is provided with an axially arranged track. The track includes two oppositely arranged upper tracks 103 and two oppositely arranged lower tracks 104. The slot 105 of the first guide rail 5 is opposite to the slot 105 of the third guide rail 7, and the slot 105 of the second guide rail 6 is opposite to the slot 105 of the fourth guide rail 8. The first tractor 9, the second tractor 10, the third tractor 11, the fourth tractor 12, the fifth tractor 13, the sixth tractor 14, the seventh tractor 15, and the eighth tractor 16 all include a traction seat 97 and a pulley seat. The traction seat 97 is provided with an upper roller 98 and a lower roller 100 above and below it, respectively. The pulley seat includes two interconnected upper support plates 95 and lower support plates 101. The pulley seat is U-shaped. The connection between the upper support plates 95 and the lower support plates 101 is hinged to the traction seat 97. Two oppositely arranged pulleys 46 are rotatably installed between the upper support plates 95 and the lower support plates 101. The traction seats 97 of the first tractor 9 and the second tractor 10 are inserted into the slots 105 of the guide sleeve of the first guide rail 5. The upper rollers 98 and lower rollers 100 on the traction seats 97 of the first tractor 9 and the second tractor 10 are both located inside the guide sleeve of the first guide rail 5. The pulley seats of the first tractor 9 and the second tractor 10 are both located outside the guide sleeve of the first guide rail 5. The upper rollers 98 on the traction seats 97 of the first tractor 9 and the second tractor 10 are located between the two upper rails 103 inside the guide sleeve of the first guide rail 5. The lower rollers 100 on the traction seats 97 of the first tractor 9 and the second tractor 10 are located between the two lower rails 104 inside the guide sleeve of the first guide rail 5. The first traction cable 19 is fixedly connected to the traction seat 97 of the first tractor 9, and the second traction cable 20 is fixedly connected to the traction seat 97 of the second tractor 10. The traction seats 97 of the third tractor 11 and the fourth tractor 12 are inserted into the slots 105 of the guide sleeves of the second guide rail 6. The upper rollers 98 and lower rollers 100 on the traction seats 97 of the third tractor 11 and the fourth tractor 12 are both located inside the guide sleeves of the second guide rail 6. The pulley seats of the third tractor 11 and the fourth tractor 12 are both located outside the guide sleeves of the second guide rail 6. The upper rollers 98 on the traction seats 97 of the third tractor 11 and the fourth tractor 12 are located between the two upper rails 103 inside the guide sleeves of the second guide rail 6. The lower rollers 100 on the traction seats 97 of the third tractor 11 and the fourth tractor 12 are located between the two lower rails 104 inside the guide sleeves of the second guide rail 6. The third traction cable 36 is fixedly connected to the traction seat 97 of the third tractor 11, and the fourth traction cable 35 is fixedly connected to the traction seat 97 of the fourth tractor 12.The traction seats 97 of the fifth tractor 13 and the sixth tractor 14 are inserted into the slots 105 of the guide sleeve of the third guide rail 7. The upper rollers 98 and lower rollers 100 on the traction seats 97 of the fifth tractor 13 and the sixth tractor 14 are both located inside the guide sleeve of the third guide rail 7. The pulley seats of the fifth tractor 13 and the sixth tractor 14 are both located outside the guide sleeve of the third guide rail 7. The upper rollers 98 on the traction seats 97 of the fifth tractor 13 and the sixth tractor 14 are located between the two upper rails 103 inside the guide sleeve of the third guide rail 7. The lower rollers 100 on the traction seats 97 of the fifth tractor 13 and the sixth tractor 14 are located between the two lower rails 104 inside the guide sleeve of the third guide rail 7. The fifth traction cable 45 is fixedly connected to the traction seat 97 of the fifth tractor 13, and the sixth traction cable 44 is fixedly connected to the traction seat 97 of the sixth tractor 14. The traction seats 97 of the seventh tractor 15 and the eighth tractor 16 are inserted into the slots 105 of the guide sleeves of the fourth guide rail 8. The upper rollers 98 and lower rollers 100 on the traction seats 97 of the seventh tractor 15 and the eighth tractor 16 are both located inside the guide sleeves of the fourth guide rail 8. The pulley seats of the seventh tractor 15 and the eighth tractor 16 are both located outside the guide sleeves of the fourth guide rail 8. The upper rollers 98 on the traction seats 97 of the seventh tractor 15 and the eighth tractor 16 are located between the two upper rails 103 inside the guide sleeves of the fourth guide rail 8. The lower rollers 100 on the traction seats 97 of the seventh tractor 15 and the eighth tractor 16 are located between the two lower rails 104 inside the guide sleeves of the fourth guide rail 8. The seventh traction cable 21 is fixedly connected to the traction seat 97 of the seventh tractor 15, and the eighth traction cable 22 is fixedly connected to the traction seat 97 of the eighth tractor 16.

[0065] Since the slots 105 of the first guide rail 5 and the third guide rail 7 are arranged opposite each other, and the slots 105 of the second guide rail 6 and the fourth guide rail 8 are arranged opposite each other, and the traction seat 97 of the tractor vehicle is inserted into the slot 105 of the guide sleeve of the guide rail, the upper roller 98 and the lower roller 100 on the traction seat 97 of the tractor vehicle are both located inside the guide sleeve of the guide rail, and the pulley seat of the tractor vehicle is located outside the guide sleeve of the guide rail, the pulley seats of the tractor vehicle are all located within the area enclosed by the first guide rail 5, the second guide rail 6, the third guide rail 7 and the fourth guide rail 8, as shown below. Figure 11 , Figures 16-19 As shown.

[0066] like Figure 20 As shown, and in combination Figure 21 , Figure 22 , Figure 24 , Figure 25 , Figure 1 , Figures 6-9 , Figure 11 , Figures 16-19As shown, the pulley seats of the first tractor 9, the second tractor 10, the third tractor 11, the fourth tractor 12, the fifth tractor 13, the sixth tractor 14, the seventh tractor 15, and the eighth tractor 16 are all equipped with guide cables 47. The guide cables 47 are fixedly mounted on the upper support plate 95 of the pulley seat. Each guide cable 47 has a guide cable hole 102, and a guide wheel 99 is circumferentially arranged around the guide cable hole 102. The guide wheel 99 is mounted on the guide cable 47. The first tractor 9 and the second tractor 10 are arranged along the direction from the first platform 1 to the second platform 2. The third intercepting cable 27 passes through the guide cable hole 102 on the guide cable 47 of the first tractor 9, and the second intercepting cable 41 passes through the guide cable hole 102 on the guide cable 47 of the second tractor 10. The third tractor 11 and the fourth tractor 12 are arranged along the direction from the second platform 2 to the eighth platform 2. The three platforms 3 are arranged in the following directions: the seventh intercepting cable 39 passes through the guide cable hole 102 on the guide cable 47 of the third tractor 11; the sixth intercepting cable 32 passes through the guide cable hole 102 on the guide cable 47 of the fourth tractor 12; the fifth tractor 13 and the sixth tractor 14 are arranged in the direction from the third platform 3 to the fourth platform 4; the first intercepting cable 26 passes through the guide cable hole 102 on the guide cable 47 of the fifth tractor 13; the fourth intercepting cable 42 passes through the guide cable hole 102 on the guide cable 47 of the sixth tractor 14; the seventh tractor 15 and the eighth tractor 16 are arranged in the direction from the fourth platform 4 to the first platform 1; the fifth intercepting cable 40 passes through the guide cable hole 102 on the guide cable 47 of the seventh tractor 15; and the eighth intercepting cable 31 passes through the guide cable hole 102 on the guide cable 47 of the eighth tractor 16.

[0067] The guide wheel 99 serves to guide the intercepting cable, ensuring smoother movement and preventing obstruction. In this embodiment, a guide wheel 99 is provided above and below the guide cable hole 102, and a vertically arranged guide wheel 99 is provided on opposite sides of one end of the guide cable hole 102, as well as on opposite sides of the other end of the guide cable hole 102.

[0068] Therefore, taking the first tractor 9 and the second tractor 10 on the first guide rail 5 as examples, the guide cable 47 on the first tractor 9 can support the third intercepting cable 27 extending towards the first platform 1, bypassing the second tractor 10, while the guide cable 47 on the second tractor 10 can support the second intercepting cable 41 extending towards the second platform 2, bypassing the first tractor 9. The function of the guide cable 47 on the two tractors on other guide rails is the same as that of the guide cable 47 on the first tractor 9 and the second tractor 10 on the first guide rail 5, and will not be elaborated here. In other words, the guide cable 47 on each tractor can support the intercepting cable extending from another tractor on the same guide rail, thus effectively solving the problem of overlapping arrangement of the intercepting cable and the tractor.

[0069] like Figure 21 As shown, and in combination Figure 22 , Figure 24 , Figure 25 , Figure 27 As shown, the first tractor 9, the second tractor 10, the third tractor 11, the fourth tractor 12, the fifth tractor 13, the sixth tractor 14, the seventh tractor 15, and the eighth tractor 16 each have two upper rollers 98 and two lower rollers 100. Both the upper rollers 98 and the lower rollers 100 have circumferentially arranged rolling grooves. The upper rollers 98 of the first tractor 9 and the second tractor 10 are engaged with the two upper rails 103 inside the guide sleeve of the first guide rail 5 through their own rolling grooves. The lower rollers 100 of the first tractor 9 and the second tractor 10 are engaged with the two lower rails 104 inside the guide sleeve of the first guide rail 5 through their own rolling grooves. The upper rollers 98 of the third tractor 11 and the fourth tractor 12 are engaged with the two upper rails 103 inside the guide sleeve of the second guide rail 6 through their own rolling grooves. The lower rollers 100 of the tractor 11 and the fourth tractor 12 are engaged with the two lower rails 104 inside the guide sleeve of the second guide rail 6 through their own rolling grooves. The upper rollers 98 of the fifth tractor 13 and the sixth tractor 14 are engaged with the two upper rails 103 inside the guide sleeve of the third guide rail 7 through their own rolling grooves. The lower rollers 100 of the fifth tractor 13 and the sixth tractor 14 are engaged with the two lower rails 104 inside the guide sleeve of the third guide rail 7 through their own rolling grooves. The upper rollers 98 of the seventh tractor 15 and the eighth tractor 16 are engaged with the two upper rails 103 inside the guide sleeve of the fourth guide rail 8 through their own rolling grooves. The lower rollers 100 of the seventh tractor 15 and the eighth tractor 16 are engaged with the two lower rails 104 inside the guide sleeve of the fourth guide rail 8 through their own rolling grooves.

[0070] Due to the pulling action of the intercepting cable, that is, the intercepting cable pulls the tractor vehicle within the area enclosed by the four guide rails, therefore, as Figure 27 As shown, the rolling groove of the upper roller 98 of the tractor is in close contact with the upper rail 103 on the right (i.e., the upper rail 103 near the guide rail groove 105), and the rolling groove of the lower roller 100 is in close contact with the lower rail 104 on the right (i.e., the lower rail 104 near the guide rail groove 105). At the same time, although the rolling groove of the upper roller 98 is still engaged with the upper rail 103 on the left (i.e., the upper rail 103 away from the guide rail groove 105), there is a gap between the two. Similarly, although the rolling groove of the lower roller 100 is still engaged with the lower rail 104 on the left (i.e., the lower rail 104 away from the guide rail groove 105), there is a gap between the two. This is why the tractor can move on the guide sleeve of the guide rail, that is, along the upper rail 103 and lower rail 104 on the right side via the upper roller 98 and lower roller 100 respectively. At this time, because there are gaps between the upper roller 98 and lower roller 100 and the upper rail 103 and lower rail 104 on the left side respectively, the upper rail 103 and lower rail 104 on the left side will not affect the movement of the tractor. When the tractor is moving, because the upper roller 98 and lower roller 100 are still engaged with the upper rail 103 and lower rail 104 on the left side respectively, this prevents the upper roller 98 and lower roller 100 from moving up and down, thus making the movement of the tractor more stable.

[0071] Once the arresting cable is under load, i.e., after the arresting hook 18 of rocket stage 17 is engaged with the arresting cable, rocket stage 17 will pull the arresting cable downwards in the area enclosed by the four guide rails. The arresting cable, in turn, will pull the pulley seat of the tractor unit downwards in that area. Because the pulley seat is hinged to the tractor unit 97, the pulley seat will have a downward tilt angle, thus ensuring that the force direction on the pulley seat is basically consistent with the tension direction of the arresting cable. The tractor unit is made entirely of high-carbon steel, and the pulley 46 is made of titanium alloy, possessing excellent comprehensive mechanical properties.

[0072] like Figure 20 As shown, and in combination Figures 23-26 As shown, each pulley 46 of the pulley base has guide wheels 96 at both ends of its cable winding position. The guide wheels 96 are rotatably mounted between the upper support plate 95 and the lower support plate 101 of the pulley base. In this embodiment, the two pulleys 46 of the pulley base are arranged close together. Therefore, the cable entry ends of the two pulleys 46 at their cable winding positions are located at the same point, i.e., between the two pulleys 46, while the cable exit ends of the two pulleys 46 at their cable winding positions are arranged in opposite directions, as shown... Figure 26As shown, the cable entry point of the two pulleys 46 is located at the upper intersection between the two pulleys 46, while the cable exit point of the left pulley 46 is located below the left side of the pulley 46, and the cable exit point of the right pulley 46 is located below the right side of the pulley 46. Correspondingly, only one upper guide pulley 96 is set at the upper intersection between the two pulleys 46, while a lower left guide pulley 96 is set below the left side of the left pulley 46, and a lower right guide pulley 96 is set below the right side of the right pulley 46. In this way, under the action of the upper guide pulley 96 and the lower left guide pulley 96, the left intercepting cable can be stably wound around the left pulley 46 (the left intercepting cable enters the left pulley 46 from between the upper guide pulley 96 and the left pulley 46). The cable passes through the groove of the left pulley 46, then around the left pulley 46, and exits through the groove between the lower left guide pulley 96 and the left pulley 46. Under the action of the upper guide pulley 96 and the lower right guide pulley 96, the right-side intercepting cable can be securely wrapped around the right pulley 46 (the right-side intercepting cable enters the groove of the right pulley 46 between the upper guide pulley 96 and the right pulley 46, then passes around the right pulley 46, and exits through the groove between the lower right guide pulley 96 and the right pulley 46).

[0073] In this embodiment, the two ends of the first guide rail 5 are fixedly connected to the upper platform 48 of the first platform 1 and the second platform 2, respectively; the two ends of the second guide rail 6 are fixedly connected to the upper platform 48 of the second platform 2 and the third platform 3, respectively; the two ends of the third guide rail 7 are fixedly connected to the upper platform 48 of the third platform 3 and the fourth platform 4, respectively; and the two ends of the fourth guide rail 8 are fixedly connected to the upper platform 48 of the fourth platform 4 and the first platform 1, respectively.

[0074] like Figure 10 , Figure 11As shown, when the rocket capture system of the present invention is in use, the platform is fixedly set on the ground, on a ship or other suitable site for rocket recovery (of course, in specific settings, the platform is fixedly set on the above-mentioned site by a support frame). When the rocket stage 17 lands in the area enclosed by the first guide rail 5, the second guide rail 6, the third guide rail 7 and the fourth guide rail 8, the first traction device, the second traction device, the third traction device, the fourth traction device, the fifth traction device, the sixth traction device, the seventh traction device and the eighth traction device are activated. The first traction device pulls the first tractor 9 along the first guide rail 5. Simultaneously, the sixth traction device pulls the sixth tractor 14 along the third guide rail 7, causing the first tractor 9 and the sixth tractor 14 to move synchronously in the same direction. Therefore, the first intercepting cable 26 and the second intercepting cable 41, located between the first tractor 9 and the sixth tractor 14, begin to translate along the first guide rail 5 and the third guide rail 7. The second traction device pulls the second tractor 10 along the first guide rail 5. Simultaneously, the fifth traction device pulls the fifth tractor 13 along the third guide rail 7, causing the second tractor 10 and the fifth tractor 13 to move synchronously in the same direction. Therefore, the third intercepting cable 27 and the fourth intercepting cable 42, located between the second tractor 10 and the fifth tractor 13, begin to translate along the first guide rail 5 and the third guide rail 7. The three traction devices pull the third tractor 11 along the second guide rail 6. At the same time, the eighth traction device pulls the eighth tractor 16 along the fourth guide rail 8, and the third tractor 11 and the eighth tractor 16 move synchronously in the same direction. As a result, the fifth intercepting cable 40 and the sixth intercepting cable 32, located between the third tractor 11 and the eighth tractor 16, begin to translate along the second guide rail 6 and the fourth guide rail 8. The fourth traction device pulls the fourth tractor 12 along the second guide rail 6. At the same time, the seventh traction device pulls the seventh tractor 15 along the fourth guide rail 8, and the fourth tractor 12 and the seventh tractor 15 move synchronously in the same direction. As a result, the seventh intercepting cable 39 and the eighth intercepting cable 31, located between the fourth tractor 12 and the seventh tractor 15, begin to translate along the second guide rail 6 and the fourth guide rail 8.Based on the landing point of rocket stage 17, the first interceptor cable 26, the second interceptor cable 41, the third interceptor cable 27, and the fourth interceptor cable 42 are moved to surround rocket stage 17, i.e., rocket stage 17 is located within the square area enclosed by the first interceptor cable 26 / second interceptor cable 41, third interceptor cable 27 / fourth interceptor cable 42, fifth interceptor cable 40 / sixth interceptor cable 32, and seventh interceptor cable 39 / eighth interceptor cable 31. As rocket stage 17 gradually descends, the aforementioned interceptor cables are gradually moved closer to the rocket stage. 17. The arresting hooks 18 on rocket stage 17 are engaged with the arresting cable (arresting hooks 18 are installed around the rocket stage 17 to facilitate recovery). Under the weight of rocket stage 17, the two ends of the arresting cable pull upward on the piston rods 107 of the piston cylinder (at this time, the take-up and release winch is in a braked state). The piston rods 107 drive the pistons 110 to move upward, compressing the honeycomb aluminum 109 to provide a buffering effect, until both rocket stage 17 and piston rods 107 stop moving, thus completing the capture of rocket stage 17. Afterward, to lower rocket stage 17 to the ground, a ship, or other suitable site for rocket recovery, the take-up and release winch is activated, releasing the arresting cable on its drum. As the arresting cable is released, rocket stage 17 gradually moves downward until it is lowered to the ground, a ship, or other suitable site for rocket recovery. Finally, rocket stage 17 is transported to the required location.

[0075] In this embodiment, each interceptor cable is arranged in a Z-shape, meaning that both ends of each interceptor cable extend to two platforms arranged diagonally, such as the first platform 1 and the third platform 3, or the second platform 2 and the fourth platform 4. The interceptor cables are made of steel wire rope. The Z-shaped arrangement of each interceptor cable significantly reduces the mass of the moving parts (tractor) during rapid capture of the rocket stage 17, reduces the driving power of the interceptor cables, and greatly improves the success rate of capturing the rocket stage 17. The interceptor cable pulls the piston rod 107 of the piston cylinder upwards, causing the piston 110 to compress the honeycomb aluminum 109, which acts as a buffer, thus offsetting the downward force of the rocket stage 17.

[0076] Two intercepting cables arranged between two opposing tractors are hinged together. For example, the first intercepting cable 26 and the second intercepting cable 41 arranged between the first tractor 9 and the sixth tractor 14 are hinged together. Both the first intercepting cable 26 and the second intercepting cable 41 are arranged in a Z-shape and are symmetrically arranged. The first intercepting cable 26 and the second intercepting cable 41 form a closed force system through the first tractor 9 and the sixth tractor 14, preventing the first traction cable 19 and the sixth traction cable 44 from being subjected to the same tension as the first intercepting cable 26 and the second intercepting cable 41. At the same time, it can prevent the initial tension of the first intercepting cable 26 and the second intercepting cable 41 from acting on the first traction device and the sixth traction device. Similarly, the third intercepting cable 27 and the fourth intercepting cable 42 are hinged together between the second tractor 10 and the fifth tractor 13; the fifth intercepting cable 40 and the sixth intercepting cable 32 are hinged together between the third tractor 11 and the eighth tractor 16; and the seventh intercepting cable 39 and the eighth intercepting cable 31 are hinged together between the fourth tractor 12 and the seventh tractor 15. In this way, the two arresting cables can be prevented from separating by hinged braiding, and the hinged braiding does not affect the swing of the arresting cables. In addition, since the two arresting cables arranged between the two opposing towing vehicles are hinged together, when the arresting hook 18 of the rocket stage 17 is hooked on the two hinged arresting cables, it can pull down the two hinged arresting cables simultaneously.

[0077] Since the intercepting cable in this invention is located around the rocket stage 17 during rocket recovery, even if the attitude and speed of the rocket stage 17 do not reach the ideal state for recovery, the intercepting cable can easily hook the rocket stage 17 and complete the capture. Therefore, this invention can reduce the requirements for the attitude and speed of rocket recovery and improve the success rate of rocket recovery.

[0078] Example 2

[0079] like Figure 32 As shown, and in combination Figure 33-36 As shown, the difference between this embodiment and Embodiment 1 lies in the structure of the buffer mechanism. In this embodiment, the buffer mechanism only includes the winding and unwinding winch, while omitting the piston cylinder, as detailed below:

[0080] The first buffer mechanism is a first take-up and release winch 67, located on the first platform 1 and the third platform 3. The second buffer mechanism is a second take-up and release winch 85, located on the second platform 2 and the fourth platform 4. The third buffer mechanism is a third take-up and release winch 68, located on the first platform 1 and the third platform 3. The fourth buffer mechanism is a fourth take-up and release winch 86, located on the second platform 2 and the fourth platform 4. The fifth buffer mechanism is a fifth take-up and release winch 88. The fifth take-up and release winch 88 at the second platform 2 is located on the second platform 2, and the fifth take-up and release winch 88 at the fourth platform 4 is located on the fourth platform 4. The sixth buffer mechanism is a sixth take-up and release winch 70. The sixth take-up and release winch 70 at the first platform 1 is located on the first platform 1, and the sixth take-up and release winch 70 at the third platform 3 is located on the third platform 3. The seventh buffer mechanism is a seventh take-up and release winch 87. The seventh take-up and release winch 87 at the second platform 2 is located on the second platform 2, and the seventh take-up and release winch 87 at the fourth platform 4 is located on the fourth platform 4. The eighth buffer mechanism is an eighth take-up and release winch 69. The eighth take-up and release winch 69 at the first platform 1 is located on the first platform 1, and the eighth take-up and release winch 69 at the third platform 3 is located on the third platform 3.One end of the first intercepting cable 26 is connected to the first winding winch 67 on the first platform 1, and the other end of the first intercepting cable 26 is connected to the first winding winch 67 on the third platform 3. One end of the second intercepting cable 41 is connected to the second winding winch 85 on the second platform 2, and the other end of the second intercepting cable 41 is connected to the second winding winch 85 on the fourth platform 4. One end of the third intercepting cable 27 is connected to the third winding winch 68 on the first platform 1, and the other end of the third intercepting cable 27 is connected to the third winding winch 68 on the third platform 3. One end of the fourth intercepting cable 42 is connected to the fourth winding winch 86 on the second platform 2, and the other end of the fourth intercepting cable 42 is connected to the fourth winding winch 86 on the fourth platform 4. One end of the fifth intercepting cable 40 is connected to the fifth take-up and release winch 88 on the second platform 2, and the other end of the fifth intercepting cable 40 is connected to the fifth take-up and release winch 88 on the fourth platform 4. One end of the sixth intercepting cable 32 is connected to the sixth take-up and release winch 70 on the third platform 3, and the other end of the sixth intercepting cable 32 is connected to the sixth take-up and release winch 70 on the first platform 1. One end of the seventh intercepting cable 39 is connected to the seventh take-up and release winch 87 on the second platform 2, and the other end of the seventh intercepting cable 39 is connected to the seventh take-up and release winch 87 on the fourth platform 4. One end of the eighth intercepting cable 31 is connected to the eighth take-up and release winch 69 on the third platform 3, and the other end of the eighth intercepting cable 31 is connected to the eighth take-up and release winch 69 on the first platform 1.

[0081] Both the first platform 1 and the third platform 3 have a first winding winch 67 on their lower platform 52. One end of the first intercepting cable 26 passes sequentially around the first intercepting fixed pulley 28, the first upper guide pulley 60, and the first lower guide pulley 63 of the first platform 1 and connects to the first winding winch 67 of the first platform 1. The other end of the first intercepting cable 26 passes sequentially around the first intercepting fixed pulley 28, the first upper guide pulley 60, and the first lower guide pulley 63 of the third platform 3 and connects to the first winding winch 67 of the third platform 3. Both the second platform 2 and the fourth platform 4 have a second winding winch 85 on their lower platform 52. One end of the second intercepting cable 41 passes sequentially around the second intercepting fixed pulley 34, the second upper guide pulley 77, and the second lower guide pulley 81 of the second platform 2 and connects to the second winding winch 85 of the second platform 2. The other end of the second intercepting cable 41 passes sequentially around the second intercepting fixed pulley 34, the second upper guide pulley 77, and the second lower guide pulley 81 of the fourth platform 4 and connects to the second winding winch 85 of the fourth platform 4. Both the first platform 1 and the third platform 3 are equipped with a third winding winch 68 on their lower platforms 52. One end of the third intercepting cable 27 passes through the third intercepting fixed pulley 25, the third upper guide pulley 61 and the third lower guide pulley 64 of the first platform 1 in sequence and is connected to the third winding winch 68 of the first platform 1. The other end of the third intercepting cable 27 passes through the third intercepting fixed pulley 25, the third upper guide pulley 61 and the third lower guide pulley 64 of the third platform 3 in sequence and is connected to the third winding winch 68 of the third platform 3. Both the second platform 2 and the fourth platform 4 are equipped with a fourth winding winch 86 on their lower platforms 52. One end of the fourth intercepting cable 42 passes through the fourth intercepting fixed pulley 33, the fourth upper guide pulley 78 and the fourth lower guide pulley 82 of the second platform 2 in sequence and is connected to the fourth winding winch 86 of the second platform 2. The other end of the fourth intercepting cable 42 passes through the fourth intercepting fixed pulley 33, the fourth upper guide pulley 78 and the fourth lower guide pulley 82 of the fourth platform 4 in sequence and is connected to the fourth winding winch 86 of the fourth platform 4. Both the second platform 2 and the fourth platform 4 have a fifth winding winch 88 on their lower platform 52. One end of the fifth intercepting cable 40 passes through the fifth intercepting fixed pulley 37, the fifth upper guide pulley 80 and the fifth lower guide pulley 84 of the second platform 2 in sequence and is connected to the fifth winding winch 88 of the second platform 2. The other end of the fifth intercepting cable 40 passes through the fifth intercepting fixed pulley 37, the fifth upper guide pulley 80 and the fifth lower guide pulley 84 of the fourth platform 4 in sequence and is connected to the fifth winding winch 88 of the fourth platform 4.Both the first platform 1 and the lower platform 52 of the third platform 3 are equipped with a sixth winding winch 70. One end of the sixth intercepting cable 32 passes through the sixth intercepting fixed pulley 29, the sixth upper guide pulley 62 and the sixth lower guide pulley 66 of the third platform 3 in sequence and is connected to the sixth winding winch 70 of the third platform 3. The other end of the sixth intercepting cable 32 passes through the sixth intercepting fixed pulley 29, the sixth upper guide pulley 62 and the sixth lower guide pulley 66 of the first platform 1 in sequence and is connected to the sixth winding winch 70 of the first platform 1. Both the second platform 2 and the fourth platform 4 have a seventh winding winch 87 on their lower platform 52. One end of the seventh intercepting cable 39 passes through the seventh intercepting fixed pulley 38, the seventh upper guide pulley 79 and the seventh lower guide pulley 83 of the second platform 2 in sequence and is connected to the seventh winding winch 87 of the second platform 2. The other end of the seventh intercepting cable 39 passes through the seventh intercepting fixed pulley 38, the seventh upper guide pulley 79 and the seventh lower guide pulley 83 of the fourth platform 4 in sequence and is connected to the seventh winding winch 87 of the fourth platform 4. Both the first platform 1 and the lower platform 52 of the third platform 3 are equipped with an eighth winding winch 69. One end of the eighth intercepting cable 31 passes through the eighth intercepting fixed pulley 30, the eighth upper guide pulley 59 and the eighth lower guide pulley 65 of the third platform 3 in sequence and is connected to the eighth winding winch 69 of the third platform 3. The other end of the eighth intercepting cable 31 passes through the eighth intercepting fixed pulley 30, the eighth upper guide pulley 59 and the eighth lower guide pulley 65 of the first platform 1 in sequence and is connected to the eighth winding winch 69 of the first platform 1.

[0082] Each arresting cable is connected to a take-up and release winch at both ends. When the arresting hook 18 of rocket stage 17 is engaged with the arresting cable, the two ends of the cable pull on the winches under the weight of rocket stage 17. At this time, the winches release the arresting cable from their drums at a suitable speed to provide a buffer. As rocket stage 17 continues to descend, the speed at which the winches release the arresting cable decreases until they stop releasing it. At this point, rocket stage 17 stops descending, thus completing the capture of rocket stage 17. To lower rocket stage 17 to the ground, a ship, or other suitable recovery site, the winches are restarted to release the arresting cable from their drums. As the cable is released, rocket stage 17 gradually descends until it is lowered to the ground, a ship, or other suitable recovery site. Finally, rocket stage 17 is transported to the required location.

[0083] It should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0084] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0085] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A rocket capture system, characterized in that: The platform comprises a first platform, a second platform, a third platform, and a fourth platform. A first guide rail is provided between the first and second platforms, a second guide rail is provided between the second and third platforms, a third guide rail is provided between the third and fourth platforms, and a fourth guide rail is provided between the fourth platform and the first platform. The first, second, third, and fourth guide rails are arranged in a rectangular pattern. A first and second tractor units are mounted on the first guide rail, a third and fourth tractor units are mounted on the second guide rail, a fifth and a sixth tractor unit are mounted on the third guide rail, and a seventh and an eighth tractor unit are mounted on the fourth guide rail. A first traction device and a second traction device are provided between the first and second platforms. The system includes a traction device, where the first and second traction devices respectively pull the first and second tractor cars along the first guide rail. A third and fourth traction device are located between the second and third platforms, respectively pulling the third and fourth tractor cars along the second guide rail. A fifth and sixth traction device are located between the third and fourth platforms, respectively pulling the fifth and sixth tractor cars along the third guide rail. A seventh and eighth traction device are located between the fourth and first platforms, respectively pulling the seventh and eighth tractor cars along the third guide rail. Moving on four guide rails, each of the first, second, third, fourth, fifth, sixth, seventh, and eighth tractor vehicles has two oppositely arranged pulleys rotatably mounted on it. A first and second intercepting cable connect the first and sixth tractor vehicles. One end of the first intercepting cable passes over a pulley of the first tractor vehicle and connects to a first buffer mechanism at the first platform. The other end of the first intercepting cable passes over a pulley of the sixth tractor vehicle and connects to a first buffer mechanism at the third platform. One end of the second intercepting cable passes over another pulley of the first tractor vehicle and connects to a second buffer mechanism at the second platform. The other end of the second intercepting cable passes over a pulley of the sixth tractor vehicle... Another pulley connects to the second buffer mechanism at the fourth platform. A third and fourth intercepting cable connect the second and fifth tractors. One end of the third intercepting cable passes over a pulley of the second tractor and connects to the third buffer mechanism at the first platform. The other end of the third intercepting cable passes over a pulley of the fifth tractor and connects to the third buffer mechanism at the third platform. One end of the fourth intercepting cable passes over another pulley of the second tractor and connects to the fourth buffer mechanism at the second platform. The other end of the fourth intercepting cable passes over another pulley of the fifth tractor and connects to the fourth buffer mechanism at the fourth platform. A fifth and sixth intercepting cable connect the third and eighth tractors.One end of the fifth intercepting cable passes over a pulley of the third tractor and connects to the fifth buffer mechanism at the second platform. The other end of the fifth intercepting cable passes over a pulley of the eighth tractor and connects to the fifth buffer mechanism at the fourth platform. One end of the sixth intercepting cable passes over another pulley of the third tractor and connects to the sixth buffer mechanism at the third platform. The other end of the sixth intercepting cable passes over another pulley of the eighth tractor and connects to the sixth buffer mechanism at the first platform. The fourth and seventh tractors are connected by the seventh and eighth intercepting cables. One end of the seventh intercepting cable passes over a pulley of the fourth tractor and connects to the seventh buffer mechanism at the second platform. The other end of the seventh intercepting cable passes over a pulley of the seventh tractor and connects to the seventh buffer mechanism at the fourth platform. One end of the eighth intercepting cable passes over another pulley of the fourth tractor and connects to the eighth buffer mechanism at the third platform. The other end of the eighth intercepting cable passes over another pulley of the seventh tractor and connects to the eighth buffer mechanism at the first platform. The first and second intercepting cables between the first and sixth tractors are parallel to the third and fourth intercepting cables between the second and fifth tractors. The fifth and sixth intercepting cables between the third and eighth tractors are parallel to the seventh and eighth intercepting cables between the fourth and seventh tractors. The first, second, third, fourth, fifth, sixth, seventh, and eighth buffer mechanisms all include a winding winch and a piston cylinder. Each piston cylinder includes a cylinder body, a piston, and a piston rod. A piston is housed within the cylinder body. The lower end of the piston rod is fixedly connected to the piston, and the upper end of the piston rod extends through the cylinder body to the outside of the cylinder body. A movable pulley is located at the upper end of the piston rod. A honeycomb aluminum structure is housed within the cylinder body, positioned above the piston. The winding winch and piston cylinder of the first buffer mechanism are respectively a first winding winch and a first piston cylinder. The winding winch and piston cylinder of the second buffer mechanism are respectively a second winding winch and a second piston cylinder. The third… The winding and unwinding winch and piston cylinder of the buffer mechanism are respectively the third winding and unwinding winch and the third piston cylinder; the winding and unwinding winch and piston cylinder of the fourth buffer mechanism are respectively the fourth winding and unwinding winch and the fourth piston cylinder; the winding and unwinding winch and piston cylinder of the fifth buffer mechanism are respectively the fifth winding and unwinding winch and the fifth piston cylinder; the winding and unwinding winch and piston cylinder of the sixth buffer mechanism are respectively the sixth winding and unwinding winch and the sixth piston cylinder; the winding and unwinding winch and piston cylinder of the seventh buffer mechanism are respectively the seventh winding and unwinding winch and the seventh piston cylinder; the winding and unwinding winch and piston cylinder of the eighth buffer mechanism are respectively the eighth winding and unwinding winch and the eighth piston cylinder. The first winding and unwinding winch of the first buffer mechanism at the first platform is located on the first platform. The first piston cylinder of the first buffer mechanism is fixedly installed below the first platform. The first winding winch of the first buffer mechanism at the third platform is installed on the third platform, and the first piston cylinder of the first buffer mechanism at the third platform is fixedly installed below the third platform. The second winding winch of the second buffer mechanism at the second platform is installed on the second platform, and the second piston cylinder of the second buffer mechanism at the second platform is fixedly installed below the second platform. The second winding winch of the second buffer mechanism at the fourth platform is installed on the fourth platform, and the second piston cylinder of the second buffer mechanism at the fourth platform is fixedly installed below the fourth platform. The third winding winch of the third buffer mechanism at the first platform is installed on the first platform. The third piston cylinder of the third buffer mechanism at the platform is fixedly installed below the first platform. The third winding winch of the third buffer mechanism at the third platform is installed on the third platform. The fourth winding winch of the fourth buffer mechanism at the second platform is installed on the second platform. The fourth piston cylinder of the fourth buffer mechanism at the second platform is fixedly installed below the second platform. The fourth winding winch of the fourth buffer mechanism at the fourth platform is installed on the fourth platform. The fifth winding winch of the fifth buffer mechanism at the second platform is installed on the second platform.The fifth piston cylinder of the fifth buffer mechanism at the second platform is fixedly located below the second platform. The fifth winding winch of the fifth buffer mechanism at the fourth platform is located on the fourth platform, and the fifth piston cylinder of the fifth buffer mechanism at the fourth platform is fixedly located below the fourth platform. The sixth winding winch of the sixth buffer mechanism at the first platform is located on the first platform, and the sixth piston cylinder of the sixth buffer mechanism at the first platform is fixedly located below the first platform. The sixth winding winch of the sixth buffer mechanism at the third platform is located on the third platform, and the sixth piston cylinder of the sixth buffer mechanism at the third platform is fixedly located below the third platform. The seventh winding winch of the seventh buffer mechanism at the second platform is located on the second platform. The seventh piston cylinder of the seventh buffer mechanism at the second platform is fixedly installed below the second platform. The seventh winding winch of the seventh buffer mechanism at the fourth platform is installed on the fourth platform, and the seventh piston cylinder of the seventh buffer mechanism at the fourth platform is fixedly installed below the fourth platform. The eighth winding winch of the eighth buffer mechanism at the first platform is installed on the first platform, and the eighth piston cylinder of the eighth buffer mechanism at the first platform is fixedly installed below the first platform. The eighth winding winch of the eighth buffer mechanism at the third platform is installed on the third platform, and the eighth piston cylinder of the eighth buffer mechanism at the third platform is fixedly installed below the third platform. One end of the first intercepting cable passes over the sliding contact on the first piston cylinder below the first platform. The first intercepting cable is connected to the first winding and unwinding winch on the first platform. The other end of the first intercepting cable passes over the movable pulley on the first piston cylinder below the third platform and connects to the first winding and unwinding winch on the third platform. One end of the second intercepting cable passes over the movable pulley on the second piston cylinder below the second platform and connects to the second winding and unwinding winch on the second platform. The other end of the second intercepting cable passes over the movable pulley on the second piston cylinder below the fourth platform and connects to the second winding and unwinding winch on the fourth platform. One end of the third intercepting cable passes over the movable pulley on the third piston cylinder below the first platform and connects to the third winding and unwinding winch on the first platform. The other end of the third intercepting cable passes over the movable pulley on the third piston cylinder below the third platform and connects to the third winding and unwinding winch on the third platform. The third winding winch is connected. One end of the fourth intercepting cable passes over the movable pulley on the fourth piston cylinder below the second platform and connects to the fourth winding winch on the second platform. The other end of the fourth intercepting cable passes over the movable pulley on the fourth piston cylinder below the fourth platform and connects to the fourth winding winch on the fourth platform. One end of the fifth intercepting cable passes over the movable pulley on the fifth piston cylinder below the second platform and connects to the fifth winding winch on the second platform. The other end of the fifth intercepting cable passes over the movable pulley on the fifth piston cylinder below the fourth platform and connects to the fifth winding winch on the fourth platform. One end of the sixth intercepting cable passes over the movable pulley on the sixth piston cylinder below the third platform and connects to the sixth winding winch on the third platform.The other end of the sixth intercepting cable passes over the movable pulley on the sixth piston cylinder below the first platform and connects to the sixth take-up and release winch on the first platform. One end of the seventh intercepting cable passes over the movable pulley on the seventh piston cylinder below the second platform and connects to the seventh take-up and release winch on the second platform. The other end of the seventh intercepting cable passes over the movable pulley on the seventh piston cylinder below the fourth platform and connects to the seventh take-up and release winch on the fourth platform. One end of the eighth intercepting cable passes over the movable pulley on the eighth piston cylinder below the third platform and connects to the eighth take-up and release winch on the third platform. The other end of the eighth intercepting cable passes over the movable pulley on the eighth piston cylinder below the first platform and connects to the eighth take-up and release winch on the first platform.

2. The rocket capture system according to claim 1, characterized in that: The first traction device includes two first traction winches, which are respectively mounted on a first platform and a second platform. A first traction cable connects the two first traction winches, and a first tractor is fixedly connected to the first traction cable. The second traction device includes two second traction winches, which are respectively mounted on a first platform and a second platform. A second traction cable connects the two second traction winches, and a second tractor is fixedly connected to the second traction cable. The third traction device includes two third traction winches, which are respectively mounted on a second platform and a third platform. A third traction cable connects the two third traction winches, and a third tractor is fixedly connected to the third traction cable. The fourth traction device includes two fourth traction winches, which are respectively mounted on a second platform and a third platform. A fourth traction cable connects the two fourth traction winches, and a fourth tractor is fixedly connected to the fourth traction cable. The fifth traction device includes two fifth traction winches, which are respectively located on the third platform and the fourth platform. A fifth traction cable connects the two fifth traction winches, and the fifth tractor is fixedly connected to the fifth traction cable. The sixth traction device includes two sixth traction winches, which are respectively located on the third platform and the fourth platform. A sixth traction cable connects the two sixth traction winches, and the sixth tractor is fixedly connected to the sixth traction cable. The seventh traction device includes two seventh traction winches, which are respectively located on the fourth platform and the first platform. A seventh traction cable connects the two seventh traction winches, and the seventh tractor is fixedly connected to the seventh traction cable. The eighth traction device includes two eighth traction winches, which are respectively located on the fourth platform and the first platform. An eighth traction cable connects the two eighth traction winches, and the eighth tractor is fixedly connected to the eighth traction cable.

3. The rocket capture system according to claim 2, characterized in that: The first, second, third, and fourth platforms each include an upper platform, a middle platform, and a lower platform arranged sequentially from top to bottom. The middle platform includes a middle-upper platform, a middle-middle platform, and a middle-lower platform arranged sequentially from top to bottom. The middle-upper platforms of the first and second platforms are each equipped with a first traction winch and a second traction winch. The upper platforms of both the first and second platforms are each equipped with a first fixed pulley frame. Each of the two first fixed pulley frames has two fixed pulleys installed. One end of the first traction cable passes over one fixed pulley on the first fixed pulley frame of the first platform and connects to the first traction winch of the first platform. One end of the second traction cable passes over the other fixed pulley on the first fixed pulley frame of the first platform and connects to the second fixed pulley of the first platform. The first traction cable is connected to a traction winch. The other end of the first traction cable passes over a fixed pulley on the first fixed pulley frame of the second platform and connects to the first traction winch of the second platform. The other end of the second traction cable passes over another fixed pulley on the first fixed pulley frame of the second platform and connects to the second traction winch of the second platform. A third traction winch and a fourth traction winch are both installed on the upper platforms of the second and third platforms. A second fixed pulley frame is installed on the upper platforms of both the second and third platforms. Two fixed pulleys are installed on each of the two second fixed pulley frames. One end of the third traction cable passes over a fixed pulley on the second fixed pulley frame of the second platform and connects to the third traction winch of the second platform. One end of the fourth traction cable passes over... The third traction cable passes over another fixed pulley on the second fixed pulley frame of the second platform and connects to the fourth traction winch of the second platform. The other end of the third traction cable passes over a fixed pulley on the second fixed pulley frame of the third platform and connects to the third traction winch of the third platform. The other end of the fourth traction cable passes over another fixed pulley on the second fixed pulley frame of the third platform and connects to the fourth traction winch of the third platform. A fifth traction winch and a sixth traction winch are both provided on the upper platforms of both the third and fourth platforms. A third fixed pulley frame is provided on the upper platform of both the third and fourth platforms. Two fixed pulleys are installed on each of the two third fixed pulley frames. One end of the fifth traction cable passes over a fixed pulley on the third fixed pulley frame of the third platform. The sixth traction cable is connected to the fifth traction winch of the third platform after passing over another fixed pulley on the third fixed pulley frame of the third platform. The other end of the fifth traction cable passes over one fixed pulley on the third fixed pulley frame of the fourth platform and is connected to the fifth traction winch of the fourth platform. The other end of the sixth traction cable passes over another fixed pulley on the third fixed pulley frame of the fourth platform and is connected to the sixth traction winch of the fourth platform. The fourth platform and the upper platform of the first platform are each equipped with a seventh traction winch and an eighth traction winch. The upper platform of the fourth platform and the first platform are each equipped with a fourth fixed pulley frame, and each of the two fourth fixed pulley frames has two fixed pulleys installed.One end of the seventh traction cable passes over a fixed pulley on the fourth fixed pulley frame of the fourth platform and connects to the seventh traction winch of the fourth platform. One end of the eighth traction cable passes over another fixed pulley on the fourth fixed pulley frame of the fourth platform and connects to the eighth traction winch of the fourth platform. The other end of the seventh traction cable passes over a fixed pulley on the fourth fixed pulley frame of the first platform and connects to the seventh traction winch of the first platform. The other end of the eighth traction cable passes over another fixed pulley on the fourth fixed pulley frame of the first platform and connects to the eighth traction winch of the first platform.

4. The rocket capture system according to claim 3, characterized in that: Both the first and third platforms have a first fixed intercepting pulley on their upper platforms, a first upper guide pulley on their middle platforms, and a first lower guide pulley on their lower platforms. Both platforms also have a first winding-and-unwinding winch on their lower platforms. One end of the first intercepting cable passes sequentially around the first fixed intercepting pulley, the first upper guide pulley, the first lower guide pulley, and the movable pulley on the first piston cylinder of the first platform before connecting to the first winding-and-unwinding winch of the first platform. The other end of the first intercepting cable passes sequentially around the first fixed intercepting pulley, the first upper guide pulley, the first lower guide pulley, and the movable pulley on the first piston cylinder of the third platform. The second intercepting cable is connected to the first winding and unwinding winch of the third platform. The upper platforms of both the second and fourth platforms are equipped with second fixed intercepting pulleys. The middle platforms of both the second and fourth platforms are equipped with second upper guide pulleys. The lower platforms of both the second and fourth platforms are equipped with second lower guide pulleys. The lower platforms of both the second and fourth platforms are equipped with second winding and unwinding winches. One end of the second intercepting cable passes sequentially around the second fixed intercepting pulley, the second upper guide pulley, the second lower guide pulley, and the movable pulley on the second piston cylinder of the second platform before connecting to the second winding and unwinding winch of the second platform. The other end of the second intercepting cable passes sequentially around the second fixed intercepting pulley and the second upper guide pulley of the fourth platform. The third intercepting cable is connected to the second winding winch of the fourth platform after passing through the second lower guide pulley, the third upper guide pulley, the third lower guide pulley, and the moving pulley on the third piston cylinder. The upper platforms of both the first and third platforms are equipped with third fixed intercepting pulleys, the middle platforms of both platforms are equipped with third upper guide pulleys, the middle lower platforms of both platforms are equipped with third lower guide pulleys, and the lower platforms of both platforms are equipped with third winding winches. One end of the third intercepting cable passes through the third fixed intercepting pulley, the third upper guide pulley, the third lower guide pulley, and the moving pulley on the third piston cylinder of the first platform in sequence before connecting to the third winding winch of the first platform. The other end of the third intercepting cable passes through the third... The platform's third intercepting fixed pulley, third upper guide pulley, third lower guide pulley, and movable pulley on the third piston cylinder are connected to the third winding winch of the third platform. The second and fourth platforms each have a fourth intercepting fixed pulley on their upper platforms, a fourth upper guide pulley on their middle platforms, a fourth lower guide pulley on their middle lower platforms, and a fourth winding winch on their lower platforms. One end of the fourth intercepting cable sequentially passes over the fourth intercepting fixed pulley, fourth upper guide pulley, fourth lower guide pulley, and movable pulley on the fourth piston cylinder of the second platform before connecting to the fourth winding winch of the second platform.The other end of the fourth intercepting cable passes sequentially around the fourth fixed intercepting pulley, the fourth upper guide pulley, the fourth lower guide pulley, and the movable pulley on the fourth piston cylinder of the fourth platform before connecting to the fourth winding winch of the fourth platform. A fifth fixed intercepting pulley is provided on the upper platform of both the second and fourth platforms. A fifth upper guide pulley is provided on the middle platform of both the second and fourth platforms. A fifth lower guide pulley is provided on the lower platform of both the second and fourth platforms. A fifth winding winch is provided on the lower platform of both the second and fourth platforms. One end of the fifth intercepting cable passes sequentially around the fifth fixed intercepting pulley, the fifth upper guide pulley, the fifth lower guide pulley, and the movable pulley on the fifth piston cylinder of the second platform. The fifth intercepting cable is connected to the fifth winding winch of the second platform after the wheel. The other end of the fifth intercepting cable passes sequentially around the fifth intercepting fixed pulley, the fifth upper guide pulley, the fifth lower guide pulley, and the movable pulley on the fifth piston cylinder of the fourth platform before connecting to the fifth winding winch of the fourth platform. The upper platforms of both the first and third platforms are equipped with sixth intercepting fixed pulleys. The middle platforms of both the first and third platforms are equipped with sixth upper guide pulleys. The lower platforms of both the first and third platforms are equipped with sixth winding winches. One end of the sixth intercepting cable passes sequentially around the sixth intercepting fixed pulley, the sixth upper guide pulley, and the sixth winding winch of the third platform. The sixth lower guide pulley and the movable pulley on the sixth piston cylinder are connected to the sixth winding winch of the third platform. The other end of the sixth intercepting cable passes sequentially over the sixth intercepting fixed pulley, the sixth upper guide pulley, the sixth lower guide pulley, and the movable pulley on the sixth piston cylinder of the first platform before connecting to the sixth winding winch of the first platform. The upper platforms of both the second and fourth platforms are equipped with seventh intercepting fixed pulleys. The middle platforms of both the second and fourth platforms are equipped with seventh upper guide pulleys. The lower platforms of both the second and fourth platforms are equipped with seventh lower guide pulleys. The lower platforms of both the second and fourth platforms are equipped with seventh winding winches. One end of the seventh intercepting cable passes sequentially over the second platform... The seventh intercepting fixed pulley, seventh upper guide pulley, seventh lower guide pulley, and movable pulley on the seventh piston cylinder of the platform are connected to the seventh winding winch of the second platform. The other end of the seventh intercepting cable passes sequentially around the seventh intercepting fixed pulley, seventh upper guide pulley, seventh lower guide pulley, and movable pulley on the seventh piston cylinder of the fourth platform before connecting to the seventh winding winch of the fourth platform. The upper platforms of both the first and third platforms are equipped with an eighth intercepting fixed pulley. The middle platforms of both the first and third platforms are equipped with an eighth upper guide pulley. The lower platforms of both the first and third platforms are equipped with an eighth lower guide pulley. The lower platforms of both the first and third platforms are equipped with an eighth winding winch.One end of the eighth intercepting cable sequentially passes over the eighth fixed intercepting pulley, the eighth upper guide pulley, the eighth lower guide pulley, and the movable pulley on the eighth piston cylinder of the third platform before connecting to the eighth winding-up winch of the third platform. The other end of the eighth intercepting cable sequentially passes over the eighth fixed intercepting pulley, the eighth upper guide pulley, the eighth lower guide pulley, and the movable pulley on the eighth piston cylinder of the first platform before connecting to the eighth winding-up winch of the first platform.

5. The rocket capture system according to any one of claims 2-4, characterized in that: The first, second, third, and fourth guide rails each include a guide rail sleeve. An axially arranged slot is formed on the side of the guide rail sleeve. An axially arranged track is provided inside the guide rail sleeve. The track includes two opposing upper tracks and two opposing lower tracks. The slots of the first and third guide rails are opposite each other, and the slots of the second and fourth guide rails are opposite each other. The first, second, third, fourth, fifth, sixth, seventh, and eighth tractor vehicles each include a traction seat and a pulley seat. An upper roller and a lower roller are respectively provided above and below the traction seat. The pulley seat includes two interconnected upper and lower support plates. The pulley seat is U-shaped. The connection between the upper and lower support plates is hinged to the traction seat. Two opposing pulleys are rotatably mounted between the upper and lower support plates. The traction seats of the first and second traction vehicles are inserted into the slots of the guide sleeve of the first guide rail. The upper and lower rollers on the traction seats of the first and second traction vehicles are both located inside the guide sleeve of the first guide rail. The pulley seats of the first and second traction vehicles are both located outside the guide sleeve of the first guide rail. The upper rollers on the traction seats of the first and second traction vehicles are located between the two upper rails inside the guide sleeve of the first guide rail. The lower rollers on the traction seats of the first and second traction vehicles are located between the two lower rails inside the guide sleeve of the first guide rail. Between them, the first traction cable is fixedly connected to the traction seat of the first tractor, the second traction cable is fixedly connected to the traction seat of the second tractor, the traction seats of the third and fourth tractors are inserted into the grooves of the guide sleeves of the second guide rail, the upper and lower rollers on the traction seats of the third and fourth tractors are both located inside the guide sleeves of the second guide rail, the pulley seats of the third and fourth tractors are both located outside the guide sleeves of the second guide rail, the upper rollers on the traction seats of the third and fourth tractors are located between the two upper rails inside the guide sleeves of the second guide rail, and the lower rollers on the traction seats of the third and fourth tractors are located between the two lower rails inside the guide sleeves of the second guide rail, and the third traction cable is fixedly connected to the traction seat of the second tractor. The traction seats of the three tractor vehicles are fixedly connected. The fourth traction cable is fixedly connected to the traction seat of the fourth tractor vehicle. The traction seats of the fifth and sixth tractor vehicles are inserted into the slots of the guide sleeve of the third guide rail. The upper and lower rollers on the traction seats of the fifth and sixth tractor vehicles are located inside the guide sleeve of the third guide rail. The pulley seats of the fifth and sixth tractor vehicles are located outside the guide sleeve of the third guide rail. The upper rollers on the traction seats of the fifth and sixth tractor vehicles are located between the two upper rails inside the guide sleeve of the third guide rail. The lower rollers on the traction seats of the fifth and sixth tractor vehicles are located between the two lower rails inside the guide sleeve of the third guide rail. The fifth traction cable is fixedly connected to the traction seat of the fifth tractor vehicle.The sixth traction cable is fixedly connected to the traction seat of the sixth tractor. The traction seats of the seventh and eighth tractors are inserted into the slots of the guide sleeve of the fourth guide rail. The upper and lower rollers on the traction seats of the seventh and eighth tractors are both located inside the guide sleeve of the fourth guide rail. The pulley seats of the seventh and eighth tractors are both located outside the guide sleeve of the fourth guide rail. The upper rollers on the traction seats of the seventh and eighth tractors are located between the two upper rails inside the guide sleeve of the fourth guide rail. The lower rollers on the traction seats of the seventh and eighth tractors are located between the two lower rails inside the guide sleeve of the fourth guide rail. The seventh traction cable is fixedly connected to the traction seat of the seventh tractor, and the eighth traction cable is fixedly connected to the traction seat of the eighth tractor.

6. The rocket capture system according to claim 5, characterized in that: Each of the first, second, third, fourth, fifth, sixth, seventh, and eighth tractor units is equipped with a guide cable on its pulley seat. Each guide cable has a guide cable hole, and a guide wheel is circumferentially positioned around the guide cable hole. The guide wheel is mounted on the guide cable. The first and second tractor units are arranged along the direction from the first platform to the second platform. The third intercepting cable passes through the guide cable hole on the guide cable of the first tractor unit, and the second intercepting cable passes through the guide cable hole on the guide cable of the second tractor unit. The third and fourth tractor units are arranged along the direction from the second platform to the third platform. The seventh intercepting cable passes through the guide cable hole on the guide cable of the third tractor unit, and the sixth intercepting cable passes through the guide cable hole on the guide cable of the fourth tractor unit. The guide cable holes on the guide cable device of the vehicle, the fifth and sixth tractor vehicles are arranged along the direction from the third platform to the fourth platform, the first intercepting cable passes through the guide cable hole on the guide cable device of the fifth tractor vehicle, the fourth intercepting cable passes through the guide cable hole on the guide cable device of the sixth tractor vehicle, the seventh and eighth tractor vehicles are arranged along the direction from the fourth platform to the first platform, the fifth intercepting cable passes through the guide cable hole on the guide cable device of the seventh tractor vehicle, the eighth intercepting cable passes through the guide cable hole on the guide cable device of the eighth tractor vehicle, a guide wheel is provided above and below the guide cable hole, a vertically arranged guide wheel is provided on each of the opposite sides of one end of the guide cable hole, and a vertically arranged guide wheel is also provided on each of the opposite sides of the other end of the guide cable hole.

7. The rocket capture system according to claim 6, characterized in that: Each of the first, second, third, fourth, fifth, sixth, seventh, and eighth tractor vehicles has two upper and two lower rollers. Both upper and lower rollers are provided with circumferentially arranged rolling grooves. The upper rollers of the first and second tractor vehicles are engaged with the two upper rails within the guide sleeve of the first guide rail via their rolling grooves. Similarly, the lower rollers of the first and second tractor vehicles are engaged with the two lower rails within the guide sleeve of the first guide rail via their rolling grooves. The upper rollers of the third and fourth tractor vehicles are engaged with the two upper rails within the guide sleeve of the second guide rail via their rolling grooves. The lower rollers of the third and fourth tractor vehicles are engaged with the two lower rails within the guide sleeve of the second guide rail via their rolling grooves. The upper rollers of the fifth and sixth tractor vehicles are engaged with the upper rollers of the third guide rail via their rolling grooves. Between the two upper rails inside the guide sleeve, the lower rollers of the fifth and sixth tractor vehicles are engaged with the two lower rails inside the guide sleeve of the third guide rail via their own rolling grooves. The upper rollers of the seventh and eighth tractor vehicles are engaged with the two upper rails inside the guide sleeve of the fourth guide rail via their own rolling grooves. The lower rollers of the seventh and eighth tractor vehicles are engaged with the two lower rails inside the guide sleeve of the fourth guide rail via their own rolling grooves. Each pulley of the pulley seat has a guide wheel at both ends of its cable winding position. The guide wheel is installed between the upper support plate and the lower support plate of the pulley seat. The two ends of the first guide rail are fixedly connected to the first platform and the second platform, respectively. The two ends of the second guide rail are fixedly connected to the second platform and the third platform, respectively. The two ends of the third guide rail are fixedly connected to the third platform and the fourth platform, respectively. The two ends of the fourth guide rail are fixedly connected to the fourth platform and the first platform, respectively.

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