A new cylinder separation structure

Abstract

The present invention relates to a novel cylinder separation structure. It includes a cylinder rod, a cylinder barrel, a base and a flip mechanism. The cylinder barrel is fixedly installed on the base, the cylinder rod is sleeved in the cylinder barrel, and a terminal and a piston are also arranged in the cylinder barrel. One end of the cylinder rod inserted into the cylinder barrel is rotatably connected to one end of the terminal through a connecting assembly, and the other end of the terminal is connected to the piston. The piston can push the terminal to move toward the cylinder barrel outlet end. A rear end cover is arranged at the tail of the cylinder barrel, and an external air source enters the cylinder barrel through the rear end cover. Its beneficial effects are as follows: the cylinder rod is separated together with the separation body, reducing the number of separation actions and avoiding the risk of the cylinder rod colliding with the previous stage rocket; when separating, the cylinder rod is deflected by a certain angle in the direction away from the rocket body and locked to avoid collision with the previous stage rocket; the pin can move back to compress the spring to realize the reset function, which is convenient for ground function detection.

Description

Technical Field

[0001] The present invention belongs to the technical field of launch vehicle separation, and more specifically, relates to a new cylinder separation structure between rocket stages. Background Art

[0002] At present, launch vehicles generally adopt a multi-stage structure to improve carrying efficiency. In order to ensure that the separation body does not collide with the previous stage rocket during the inter-stage separation process, the separation body needs to run a certain distance along the axial direction of the rocket body. Usually, cylinder actuation is used for separation.

[0003] In the traditional cylinder separation, the cylinder rod is usually extended from the cylinder barrel and then thrown out by a hinge, which may cause the previous stage rocket to collide with the cylinder rod during flight. Therefore, it is necessary to develop a new cylinder separation structure to avoid this risk. Summary of the invention

[0004] In response to the above defects or improvement needs of the prior art, the present invention provides a new cylinder separation structure in which the cylinder rod is separated from the separation body, which reduces the number of separation actions, avoids the collision of the cylinder rod with the previous stage rocket, improves the separation reliability, and can achieve normal operation after multiple functional tests.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A novel cylinder separation structure comprises a cylinder rod, a cylinder barrel, a base and a flip mechanism, wherein the cylinder barrel is fixedly mounted on the base, the cylinder rod is sleeved in the cylinder barrel, a terminal head and a piston are also arranged in the cylinder barrel, one end of the cylinder rod inserted into the cylinder barrel is rotatably connected to one end of the terminal head through a connecting assembly, the other end of the terminal head is connected to the piston, the piston can push the terminal head to move toward the cylinder barrel outlet end, a rear end cover is arranged at the tail of the cylinder barrel, and an external air source enters the cylinder barrel through the rear end cover;

[0007] The flip mechanism is fixedly mounted on the base, and comprises a mounting seat and a flip assembly, wherein the flip assembly is rotatably connected to the mounting seat, and one end of the cylinder rod passes through the flip assembly;

[0008] A groove is provided at one end of the cylinder rod connected to the end head. The end head is a hollow structure with an open end and a through groove provided on the side wall. A locking pin and a spring are embedded in the hollow structure. When the cylinder rod rotates a certain angle, the locking pin can be inserted into the groove of the cylinder rod.

[0009] Preferably, the connecting assembly includes a U-shaped sleeve and an axle pin, the end of the cylinder rod inserted into the cylinder barrel is inserted into the open end of the U-shaped sleeve, the bottom of the U-shaped sleeve is provided with a through hole for the locking pin to pass through, the bottom of the U-shaped sleeve is fixedly connected to one end of the end head, the two side walls of the U-shaped sleeve are provided with a first mounting hole, and one end of the cylinder rod is provided with a second mounting hole, and the end head and the cylinder rod are rotatably connected around the axle pin by inserting the axle pin that matches the first mounting hole and the second mounting hole.

[0010] Preferably, the flip assembly comprises a connecting rod, a torsion bar, and two swing arms fixedly connected between the connecting rod and the torsion bar, and the torsion bar with torque is rotationally connected to the mounting seat.

[0011] Preferably, the connecting rod and the torsion bar are parallel to each other, the two swing arms are parallel to each other, and the two swing arms are respectively perpendicular to the connecting rod and the torsion bar.

[0012] Preferably, a front retaining ring is provided at the outlet end of the cylinder barrel for limiting the axial position of the cylinder rod.

[0013] Preferably, the front end of the cylinder rod is connected with a plug, and the plug abuts against the previous stage rocket.

[0014] Preferably, the connecting rod is a cylinder, and the cylinder can roll along the axial direction.

[0015] Preferably, the locking pin is stepped, the large diameter end of the locking pin abuts against the spring, and a pin shaft hole is provided on the large diameter end perpendicular to the length direction of the locking pin for the pin shaft that matches therewith to pass through.

[0016] Preferably, it further comprises a clamp, and the cylinder barrel is fixedly mounted on the base through the clamp.

[0017] Preferably, the rotation angle of the cylinder rod is 10-30 degrees.

[0018] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects:

[0019] 1. The cylinder rod separates together with the separation body, reducing the number of separation actions and avoiding the risk of collision between the cylinder rod and the previous stage rocket;

[0020] 2. During separation, the cylinder rod is deflected to a certain angle away from the rocket body and locked, so it will not swing back and forth, avoiding collision with the previous stage rocket, further improving the reliability of separation;

[0021] 3. The pin can move back to compress the spring to achieve the reset function, which is convenient for ground function testing and can ensure that it can still work normally after multiple function tests;

[0022] 4. The contact end between the flipping mechanism and the cylinder rod is a rolling cylinder. The rolling friction can reduce the friction between the flipping mechanism and the cylinder rod during the separation process, thereby reducing the impact on the separation speed and posture. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a cross-sectional schematic diagram of a novel cylinder separation structure provided in one embodiment of the present invention;

[0024] Figure 2 is a schematic structural diagram of a novel cylinder separation structure provided in one embodiment of the present invention that does not include a cylinder barrel;

[0025] Figure 3 is a schematic diagram of a flipping mechanism provided in one embodiment of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the end inner locking pin and the pin shaft provided in one embodiment of the present invention.

[0027] Throughout the drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0028] 1-cylinder rod, 101-groove, 102-second mounting hole, 2-top, 3-connecting assembly, 301-U-shaped sleeve, 302-first mounting hole, 4-axis nail, 5-end, 501-through groove, 6-piston, 7-spring, 8-lock pin, 801-small diameter end, 802-large diameter end, 803-pin shaft hole, 9-pin shaft, 10-cylinder barrel, 11-front retaining ring, 12-rear end cover, 13-clamp, 14-base, 15-flip mechanism, 151-mounting seat, 152-flip assembly, 1521-connecting rod, 1522-torsion bar, 1523-swing arm. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; in addition, in the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] like Figure 1 to Figure 2 As shown, a novel cylinder separation structure provided by the present invention includes a cylinder rod, a cylinder barrel, a base and a flip mechanism, the cylinder barrel is fixedly installed on the base through a clamp, the base is fixedly connected to the inner wall of the separation body shell, the cylinder rod is sleeved in the cylinder barrel, and a terminal and a piston are also arranged in the cylinder barrel, one end of the cylinder rod inserted into the cylinder barrel is rotatably connected with one end of the terminal through a connecting assembly, and the other end of the terminal is threadedly connected with the piston, and the piston can push the terminal to move toward the outlet end of the cylinder barrel, and a rear end cover is arranged at the tail of the cylinder barrel, and an external air source enters the cylinder barrel through the rear end cover through the external thread of the tail of the cylinder barrel and the internal thread of the rear end cover to push the piston to move along the length direction of the cylinder barrel. In order to axially limit the cylinder rod so that it does not deviate when moving along the length direction of the cylinder barrel, a front retaining ring is threadedly connected at the front end of the cylinder barrel, that is, the outlet end, and a hole is opened in the center of the front retaining ring, and the hole size is slightly larger than the diameter of the cylinder rod.

[0032] A groove is provided at one end where the cylinder rod is connected to the end head. The end head is a hollow structure with one end open and a through groove provided on the side wall. A locking pin and a spring are embedded in the hollow structure. Before the separation action begins, the spring is in a compressed state. When the cylinder rod rotates a certain angle, the locking pin in the end head is pushed out by the spring and can be inserted into the groove of the cylinder rod. In order to make it easier to insert the locking pin into the groove of the cylinder rod, the locking pin in this embodiment is stepped. The large diameter end of the locking pin abuts against the spring, and the small diameter end faces the cylinder rod. The diameter of the groove is slightly larger than the diameter of the small diameter end and smaller than the diameter of the large diameter end. Figure 4 As shown, in order to allow the locking pin to move in the opposite direction to compress the spring after being pushed out, thereby realizing the reset function and facilitating functional testing on the ground, a pin shaft hole is opened at the large diameter end perpendicular to the length direction of the locking pin, and the matching pin shaft passes through the pin shaft hole. The pin shaft is pushed to drive the locking pin to move the compression spring to realize reset.

[0033] In this embodiment, the connecting assembly includes a U-shaped sleeve and an axle pin. One end of the cylinder rod inserted into the cylinder barrel is inserted into the open end of the U-shaped sleeve. In order to allow the locking pin in the end head to enter the groove of the cylinder rod, a through hole for the locking pin to pass through is opened at the bottom of the U-shaped sleeve. The bottom of the U-shaped sleeve is fixedly connected to one end of the end head by welding or threaded connection. The two side walls of the U-shaped sleeve are provided with a first mounting hole, and one end of the cylinder rod is provided with a second mounting hole. The end head and the cylinder rod are rotatably connected around the axle pin by inserting the axle pin matching the first mounting hole and the second mounting hole, and the end head and the cylinder rod constitute a rotating pair.

[0034] like Figure 3 As shown, the flip mechanism is fixedly mounted on the base, including a mounting seat and a flip assembly, the mounting seat is mounted on the base by screws, the flip assembly is rotatably connected to the mounting seat, one end of the cylinder rod extending out of the cylinder barrel passes through the flip assembly and abuts against the flip assembly. Among them, the flip mechanism includes a connecting rod, a torsion bar, and two swing arms fixedly connected between the connecting rod and the torsion bar, the connecting rod and the torsion bar are parallel to each other, the two swing arms are parallel to each other, and the two swing arms are respectively perpendicular to the connecting rod and the torsion bar, the two ends of the torsion bar with torque are respectively inserted into the mounting holes at the two ends of the mounting seat, and are rotatably connected to the mounting seat, the torque is transmitted to the connecting rod through the swing arm, and then the connecting rod acts on the cylinder rod. In this embodiment, the connecting rod is a rolling cylinder, and the rolling friction can reduce the friction between the flip mechanism and the cylinder rod during the separation process.

[0035] In order to better avoid the risk of the previous stage rocket colliding with the cylinder rod during flight during separation and provide separation safety, the cylinder rod is rotated by the flip mechanism at an angle ranging from 10 to 30 degrees. In this embodiment, the cylinder rod rotates at an angle of 10 degrees; in another embodiment, the cylinder rod rotates at an angle of 20 degrees; in another embodiment, the cylinder rod rotates at an angle of 30 degrees.

[0036] In order to make the push-off smoother during separation, a top is threadedly connected to the front end of the cylinder rod, and the top abuts against the previous stage rocket.

[0037] The working principle of a novel cylinder separation structure provided by the present invention is as follows:

[0038] The front end of the cylinder rod is connected to the top head, which contacts the previous stage rocket, and the rear end is rotatably connected to the end head through a connecting assembly. The end head is connected to the piston, and a spring and a locking pin are installed inside the end head. A pin shaft is installed on the locking pin for the resetting function of the locking pin. The cylinder rod, the end head and the piston are inserted into the cylinder barrel as a whole; the pin shaft connected to the locking pin can move back to compress the spring to achieve the resetting function; the outlet end of the cylinder barrel is connected to the front retaining ring to limit the axial position of the cylinder rod, and the tail of the cylinder barrel is connected to the rear end cover, which is used to connect the pipeline; the clamp fixes the cylinder barrel to the base, and a flip mechanism with torque is installed on the base. The cylinder rod passes through the flip mechanism, and the torque of the flip mechanism always acts on the cylinder rod, and the base is connected to the separation body shell.

[0039] When the airbag is released, the piston is pushed back and the airbag is released, and the airbag is released to the airbag outlet.

[0040] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel cylinder separation structure, comprising a cylinder rod, a cylinder barrel, a base and a flip mechanism, characterized in that: The cylinder barrel is fixedly mounted on the base, the cylinder rod is sleeved in the cylinder barrel, and an end head and a piston are also arranged in the cylinder barrel. One end of the cylinder rod inserted into the cylinder barrel is rotatably connected to one end of the end head through a connecting assembly, and the other end of the end head is connected to the piston, and the piston can push the end head to move toward the cylinder barrel outlet end. A rear end cover is arranged at the tail of the cylinder barrel, and an external air source enters the cylinder barrel through the rear end cover; The flip mechanism is fixedly mounted on the base, and comprises a mounting seat and a flip assembly, wherein the flip assembly is rotatably connected to the mounting seat, and one end of the cylinder rod passes through the flip assembly; A groove is provided at one end of the cylinder rod connected to the end head. The end head is a hollow structure with an open end and a through groove provided on the side wall. A locking pin and a spring are embedded in the hollow structure. When the cylinder rod rotates a certain angle, the locking pin can be inserted into the groove of the cylinder rod.

2. A novel cylinder separation structure according to claim 1, characterized in that: The connecting assembly includes a U-shaped sleeve and an axle pin. The end of the cylinder rod inserted into the cylinder barrel is inserted into the open end of the U-shaped sleeve. The bottom of the U-shaped sleeve is provided with a through hole for the locking pin to pass through. The bottom of the U-shaped sleeve is fixedly connected to one end of the end head. The two side walls of the U-shaped sleeve are provided with a first mounting hole, and one end of the cylinder rod is provided with a second mounting hole. The end head and the cylinder rod are rotatably connected around the axle pin by inserting the axle pin that matches the first mounting hole and the second mounting hole.

3. A novel cylinder separation structure according to claim 1, characterized in that: The flip assembly comprises a connecting rod, a torsion bar, and two swing arms fixedly connected between the connecting rod and the torsion bar. The torsion bar with torque is rotatably connected to the mounting seat.

4. A novel cylinder separation structure according to claim 3, characterized in that: The connecting rod and the torsion bar are parallel to each other, the two swing arms are parallel to each other, and the two swing arms are respectively perpendicular to the connecting rod and the torsion bar.

5. A novel cylinder separation structure according to claim 1, characterized in that: A front retaining ring is provided at the outlet end of the cylinder barrel for limiting the axial position of the cylinder rod.

6. A novel cylinder separation structure according to claim 1, characterized in that: The front end of the cylinder rod is connected with a plug, and the plug abuts against the previous stage rocket.

7. A novel cylinder separation structure according to claim 3, characterized in that: The connecting rod is a cylinder, and the cylinder can roll along the axial direction.

8. The novel cylinder separation structure according to claim 1 is characterized in that: The locking pin is stepped, the large diameter end of the locking pin abuts against the spring, and a pin shaft hole is provided on the large diameter end perpendicular to the length direction of the locking pin for the pin shaft that matches with the locking pin to pass through.

9. A novel cylinder separation structure according to claim 1, characterized in that: It also includes a clamp, and the cylinder barrel is fixedly installed on the base through the clamp.

10. A novel cylinder separation structure according to claim 1, characterized in that: The rotation angle of the cylinder rod is 10-30 degrees.

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