A multiple hook system and method for railway operations

Abstract

This invention belongs to the technical field of railway operation equipment, specifically a re-coupling system and method for railway operations. Addressing the problem that existing re-coupling systems using robots cannot perform position changes, the following solution is proposed: A support plate is included, with two symmetrical support frames at its bottom. Two axles are mounted on the two support frames, each axle equipped with symmetrical rollers. A DC motor is mounted on one of the axles. A rotating disk and an installation and transportation module, including a rotating shaft, are located above the support plate. This invention discloses a re-coupling system and method for railway operations, enabling a re-coupling robot formed by a robotic arm and a re-coupling module to move freely between car bodies as the number of cars increases or decreases, thereby increasing the re-coupling speed of the robot and improving the re-coupling efficiency of the device.

Description

Technical Field

[0001] This invention relates to the field of railway operation equipment technology, and in particular to a double-coupling system and method for railway operations. Background Technology

[0002] After a railway vehicle operates on the tippler system and enters the empty track, both couplers on both sides of the vehicle are in the closed state. When both couplers are closed, they cannot be coupled together. Therefore, before a collision, one of the colliding couplers needs to be opened to allow for automatic coupling upon impact. In the tippler system, this process is called recoupling.

[0003] The existing railway re-coupling systems often use re-coupling robots that are in a fixed position and cannot change position as the number of carriages increases or decreases, which affects the efficiency of the re-coupling robots in re-coupling operations. Summary of the Invention

[0004] This invention discloses a re-coupling system and method for railway operations, aiming to solve the technical problem in the background art that the re-coupling robot used in the existing re-coupling system cannot perform position changes.

[0005] This invention proposes a double-coupling system for railway operations, comprising a base plate. Two symmetrical support frames are mounted on the bottom of the base plate, and two axles are mounted on the two support frames. Each axle has symmetrical rollers, and one axle has a DC motor mounted on it. A rotating disk is mounted above the base plate, and an installation and transportation module is also mounted above the base plate. The installation and transportation module includes a rotating shaft, the upper side of which is fixedly connected to the bottom of the rotating disk, and the bottom of which is movably connected to the upper side of the base plate. A fixed... The fixed platform is externally fixedly connected to three circumferentially distributed connecting frames, each with an insertion hole. A fixing pin is slidably connected to each insertion hole. The rotating disk has three circumferentially distributed grooves, each with an opening on its bottom inner wall. A fixing seat is fixedly connected to each opening, and the inner wall of each fixing seat is slidably connected to the outside of the fixing pin on the same side. A robotic arm is fixedly connected to the upper side of the fixed platform. A hook module is provided on the side of the robotic arm away from the fixed platform. The two rollers on the same side are connected to the same track.

[0006] By incorporating a platform, support frame, rollers, DC motor, turntable, robotic arm, track, installation and transportation module, hook module, and fixed platform, the device utilizes the installation and transportation module to enable the robotic arm combined with the hook module to move freely between car bodies as the number of cars increases or decreases, thereby increasing the hooking speed of the hooking robot and improving the hooking efficiency of the device.

[0007] In a preferred embodiment, an external gear ring is fixedly connected to the outside of the rotating shaft. A locking ring is provided outside the external gear ring. The bottom of the locking ring is slidably connected to the upper side of the support plate. A directional buckle is slidably connected to the outside of the locking ring. The bottom of the directional buckle is fixedly connected to the upper side of the support plate. A rack is fixedly connected to the inner wall of the locking ring, and the rack engages with the external gear ring. A base is provided outside the locking ring. Both the base and the locking ring have small holes. The same lead screw is installed in the small holes. The lead screw is located on the side of the directional buckle away from the rotating shaft. A knob is fixedly connected to the side of the lead screw away from the directional buckle. Three circumferentially spaced grooves are provided on the upper side of the fixed base. A movable rod is slidably connected in each groove. Each of the three fixed pins is fixedly connected to a short shaft on its upper side; a rotating frame is slidably connected to the outside of each of the three fixed pins, and the bottom of each of the three rotating frames is movably connected to the upper side of each of the three fixed seats. An annular groove is formed on the outside of each fixed pin, and the outside of each of the three movable rods on the same fixed seat is engaged with the inner wall of the annular groove on the same side. Each rotating frame is provided with three circumferentially distributed curved grooves, and the inner walls of the three curved grooves on the same side are slidably connected to the outside of each of the three short shafts. A coil spring is fixedly connected to the inner wall of each rotating frame, and the end of the coil spring away from the rotating frame is fixedly connected to the outside of the fixed seat on the same side. A lever is fixedly connected to the outside of each rotating frame, and the bottom of the lever is slidably connected to the bottom inner wall of the groove on the same side.

[0008] By incorporating an installation and transportation module, which utilizes fixing pins and seats to quickly and easily secure the fixed platform connected to the robotic arm onto the rotating disk, the workload of installing the hooking robot on the support plate is greatly reduced, improving the installation efficiency of the installers. The use of a rack and pinion to lock the outer gear ring ensures that the robotic arm maintains a stable angle when performing hooking operations on both sides of the carriage, improving the positioning accuracy of the robotic arm for the coupler.

[0009] In a preferred embodiment, the hook module includes a connector. A slot is formed at the end of the robotic arm furthest from the fixed platform. A round rod is movably connected within the slot. The outer side of the round rod is fixedly connected to the inner wall of the connector. A motor is fixedly connected to the outer side of the robotic arm. The output end of motor one is connected to one side of the round rod via a coupling. A mounting plate is fixedly connected to the bottom of the connector. A stabilizer is fixedly connected to the upper side of the mounting plate. Both the stabilizer and the mounting plate have round openings. A hydraulic rod is fixedly connected within each round opening. A connecting frame is fixedly connected to the output end of the hydraulic rod. A shaft is movably connected to the connecting frame. A motor three is fixedly connected to the outer side of the connecting frame. The output end of motor three is connected to one side of the shaft via a coupling. Two symmetrical clamps are provided within the connecting frame. The mounting plate has a fixed connection with a protrusion. The outside of the protrusion is fixedly connected to the outside of one of the clamps, and the outside of the other clamp is fixedly connected to the inner wall of the connecting frame. A rectangular groove is provided on the mounting plate, and a moving rod is slidably connected in the rectangular groove. An air bladder is provided on the outside of the moving rod. A pump is fixedly connected to the bottom of the mounting plate. The output end of the pump is connected to an air supply pipe through a conduit. The end of the air supply pipe away from the pump is fixedly connected to the outside of the air bladder. Two symmetrical bosses are fixedly connected to the upper side of the mounting plate. The same threaded rod is movably connected to the two bosses. A circular slot is provided on the moving rod. The inner wall of the circular slot is rotatably connected to the outside of the threaded rod through an external thread. A second motor is fixedly connected to the outside of one of the bosses. The output end of the second motor is connected to one side of the threaded rod through a coupling.

[0010] By incorporating a hook-off module, which utilizes an airbag and connecting frame, the device can, after lifting the hook tail pin, turn the hook outward to engage the closed state, allowing the front and rear carriages to be re-coupled. This avoids damage caused by collisions between the closed hooks and improves the success rate of re-coupling.

[0011] A method for double-coupling in railway operations, using a double-coupling system for railway operations as described above, includes the following steps:

[0012] Step 1: Before re-coupling the car body, use the installation and transportation module to quickly fix the robotic arm on the turntable, so that the robotic arm can move with the support plate during the re-coupling operation.

[0013] Step 2: When performing the re-coupling operation, start the DC motor to drive the rollers to move on the track, so that the hook-pulling module on the robotic arm can approach the coupler. Use the hook-pulling module to lift the hook tail pin on the coupler and perform the hook-pulling operation, so that the couplers of the front and rear carriages can be connected to complete the re-coupling operation.

[0014] As can be seen from the above, the re-coupling system for railway operations provided by the present invention enables the re-coupling robot formed by the combination of the robotic arm and the hook-off module to move freely between the couplers as the number of carriages increases or decreases, thereby increasing the re-coupling speed of the re-coupling robot and improving the re-coupling efficiency of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a double-coupling system for railway operations proposed in this invention;

[0016] Figure 2 This is a cross-sectional structural schematic diagram of a double-coupling system for railway operations proposed in this invention;

[0017] Figure 3 This is a schematic diagram of the installation and transportation module structure of a double-coupling system for railway operations proposed in this invention;

[0018] Figure 4 This is a schematic diagram of the locking ring structure of a double-coupling system for railway operations proposed in this invention;

[0019] Figure 5 This is a schematic diagram of the fixed seat structure of a double-coupling system for railway operations proposed in this invention;

[0020] Figure 6 This is a schematic diagram of the hook-off module structure of a double-hook system for railway operations proposed in this invention;

[0021] Figure 7 This is a schematic diagram of the connection frame structure of a double-hook system for railway operations proposed in this invention.

[0022] In the diagram: 1. Support plate; 2. Support frame; 3. Roller; 4. DC motor; 5. Rotary disk; 6. Robotic arm; 7. Track; 8. Installation and transportation module; 801. Rotating shaft; 802. External gear ring; 803. Connecting frame; 804. Fixing pin; 805. Locking ring; 806. Directional buckle; 807. Rack; 808. Base; 809. Lead screw; 810. Knob; 811. Groove; 812. Fixed seat; 813. Slot; 814. Movable rod; 815. Short shaft; 816. Annular groove; 817. Insertion hole; 818, Rotating frame; 819, Curved groove; 820, Coil spring; 821, Toggle lever; 9, Hook module; 901, Connector; 902, Motor 1; 903, Mounting plate; 904, Stabilizer; 905, Hydraulic rod; 906, Connecting frame; 907, Rectangular groove; 908, Moving rod; 909, Airbag; 910, Boss; 911, Threaded rod; 912, Motor 2; 913, Pump; 914, Air pipe; 915, Shaft; 916, Clamp; 917, Motor 3; 10, Fixed platform. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] The railway operation double-hook system disclosed in this invention is mainly applied to scenarios where the double-hook robot used in existing double-hook systems cannot change position.

[0025] Reference Figure 1-7 A double-coupling system for railway operations includes a base plate 1. Two symmetrical support frames 2 are mounted on the bottom of the base plate 1. Two axles are mounted on the two support frames 2, and each axle is equipped with symmetrical rollers 3. A DC motor 4 is mounted on one of the axles. A rotating disk 5 is mounted above the base plate 1, and an installation and transportation module 8 is also mounted above the base plate 1. The installation and transportation module 8 includes a rotating shaft 801. The upper side of the rotating shaft 801 is bolted to the bottom of the rotating disk 5, and the bottom of the rotating shaft 801 is rotatably connected to the upper side of the base plate 1 via bearings. A fixed platform 10 is mounted on the upper side of the rotating disk 5, and the outside of the fixed platform 10 is... The rotating disk 5 has three circumferentially distributed connecting frames 803, each with an insertion hole 817. A fixing pin 804 is slidably connected inside each insertion hole 817. The rotating disk 5 has three circumferentially distributed grooves 811. The bottom inner wall of each groove 811 has an opening. A fixing seat 812 is bolted into each opening. The inner wall of the fixing seat 812 is slidably connected to the outside of the fixing pin 804 on the same side. A mechanical arm 6 is bolted to the upper side of the fixed platform 10. A hook module 9 is provided on the side of the mechanical arm 6 away from the fixed platform 10. The two rollers 3 on the same side are provided with the same track 7.

[0026] Specifically, before re-coupling the carriages, the robotic arm 6 is quickly fixed to the turntable 5 using the installation and transportation module 8. This allows the robotic arm 6 to move with the support plate 1 during the re-coupling operation. During the re-coupling operation, the DC motor 4 is started, causing the roller 3 to move on the track 7. This allows the hook-pulling module 9 on the robotic arm 6 to approach the coupler position. The hook-pulling module 9 is used to lift the hook tail pin on the coupler and perform the hook-pulling operation, thereby allowing the couplers of the front and rear carriages to be connected and completing the re-coupling operation. The device utilizes the installation and transportation module 8 to enable the re-coupling robot formed by the robotic arm 6 and the hook-pulling module 9 to move freely between the couplers of the carriages as the number of carriages increases or decreases, thereby increasing the re-coupling speed of the re-coupling robot and improving the re-coupling efficiency of the device.

[0027] Reference Figure 3 , Figure 4 and Figure 5In a preferred embodiment, an external gear ring 802 is bolted to the outside of the rotating shaft 801. A locking ring 805 is provided on the outside of the external gear ring 802. The bottom of the locking ring 805 is slidably connected to the upper side of the support plate 1. A directional buckle 806 is slidably connected to the outside of the locking ring 805. The bottom of the directional buckle 806 is bolted to the upper side of the support plate 1. A rack 807 is bolted to the inner wall of the locking ring 805. The rack 807 and the external gear ring 802 are connected to each other. The locking ring 805 is fitted with a base 808 on its exterior. Both the base 808 and the locking ring 805 have small holes, and the same lead screw 809 is installed in the small holes. The lead screw 809 is located on the side of the directional buckle 806 away from the rotating shaft 801. A knob 810 is bolted to the side of the lead screw 809 away from the directional buckle 806. The upper side of the fixing base 812 has three circumferentially spaced grooves 813, and a movable rod 814 is slidably connected in each groove 813. Each movable rod 814 has a short shaft 815 bolted to its upper side; a rotating frame 818 is slidably connected to the outside of each of the three fixed pins 804, and the bottom of each of the three rotating frames 818 is rotatably connected to the upper side of each of the three fixed seats 812 via bearings. Each fixed pin 804 has an annular groove 816 on its outer side, and the outer sides of the three movable rods 814 on the same fixed seat 812 are engaged with the inner wall of the annular groove 816 on the same side. Each rotating frame 818 has three circumferential grooves. The curved grooves 819 are evenly distributed. The inner walls of the three curved grooves 819 on the same side are slidably connected to the outer walls of the three short shafts 815 respectively. The inner walls of the rotating frame 818 are all bolted with coil springs 820. The ends of the coil springs 820 away from the rotating frame 818 are all bolted to the outer walls of the fixed seats 812 on the same side. The outer walls of the rotating frame 818 are all bolted with levers 821. The bottom of the levers 821 is slidably connected to the bottom inner wall of the grooves 811 on the same side.

[0028] Specifically, when fixing the robotic arm 6 to the support plate 1, the fixing pin 804 is inserted into the rack 807 on the connecting frame 803, overcoming the torque of the coil spring 820 to rotate the rotating frame 818, causing the short shaft 815 to push the movable rod 814 outward, so that the fixing pin 804 can be fully inserted into the fixed seat 812. Releasing the lever 821, the movable rod 814 quickly returns to its original position, thus inserting the movable rod 814 into the annular groove 816, thereby fixing the connecting frame 803 to the fixed seat 812 with the fixing pin 804, thus connecting it to the robotic arm 6. The fixed platform 10 can be stably placed on the rotating disk 5. When it is necessary to re-hook the carriages on both sides of the platform plate 1, turn the knob 810. The knob 810 drives the lead screw 809 to rotate, thereby pushing the locking ring 805 to slide on the directional buckle 806, so that the rack 807 releases the lock on the outer gear ring 802. Rotate the rotating disk 5 connected to the rotating shaft 801, rotate the rotating disk 5 180 degrees, so that the robotic arm 6 faces the other side. Turn the knob 810 in the opposite direction, so that the rack 807 relocks the outer gear ring 802.

[0029] In specific application scenarios, the installation and transportation module 8 is mainly applicable to the installation and transportation process. That is, the installation and transportation module 8 uses the fixing pin 804 and the fixing seat 812 to make the fixing platform 10 connected to the robotic arm 6 quickly and conveniently fixed on the rotating disk 5, thereby greatly reducing the workload of installing the hooking robot on the support plate 1 and improving the installation efficiency of the installers. By using the rack 807 to lock the outer gear ring 802, the robotic arm 6 can maintain the stability of the angle when performing hooking operations on both sides of the carriage, thereby improving the positioning accuracy of the robotic arm 6 on the car coupler.

[0030] Reference Figure 6 and Figure 7In a preferred embodiment, the hook module 9 includes a connector 901. A slot is formed at the end of the robotic arm 6 furthest from the fixed platform 10. A round rod is rotatably connected to the slot via a bearing. The outer side of the round rod is bolted to the inner wall of the connector 901. A motor 902 is bolted to the outer side of the robotic arm 6. The output end of the motor 902 is connected to one side of the round rod via a coupling. A mounting plate 903 is bolted to the bottom of the connector 901, and a stabilizing frame is bolted to the upper side of the mounting plate 903. Both the stabilizer 904 and the mounting plate 903 have circular openings. A hydraulic rod 905 is bolted into each opening. The output end of the hydraulic rod 905 is bolted to a connecting frame 906. A shaft 915 is rotatably connected to the connecting frame 906 via bearings. A motor 917 is bolted to the outside of the connecting frame 906. The output end of the motor 917 is connected to one side of the shaft 915 via a coupling. Two symmetrical clamps 916 are installed inside the connecting frame 906. The outside of the shaft 915... A protrusion is bolted to the outside of one of the clamps 916, and the outside of the other clamp 916 is bolted to the inner wall of the connecting frame 906. A rectangular groove 907 is provided on the mounting plate 903, and a moving rod 908 is slidably connected in the rectangular groove 907. An airbag 909 is provided on the outside of the moving rod 908, and a pump 913 is bolted to the bottom of the mounting plate 903. The output end of the pump 913 is connected to an air supply pipe 914 through a conduit, and the air supply pipe 914 is away from the pump. One end of 913 is bolted to the outside of airbag 909; the upper side of mounting plate 903 is bolted to two symmetrical bosses 910, and the same threaded rod 911 is rotatably connected to the two bosses 910 through bearings. The moving rod 908 has a circular slot, and the inner wall of the circular slot is rotatably connected to the outside of the threaded rod 911 through external threads. The outside of one of the bosses 910 is bolted to motor 912, and the output end of motor 912 is connected to one side of threaded rod 911 through a coupling.

[0031] Specifically, when the robotic arm 6 moves the mounting plate 903 to the coupler position, the connecting frame 906 is positioned directly above the hook tail pin on the coupler. Motor 2 912 is started, driving the threaded rod 911 to rotate, causing the moving rod 908 to slide on the rectangular slot 907 to the hook ear hole and insert. Motor 3 917 is started, driving the shaft 915 to rotate, causing the closed clamp 916 to open, allowing the clamp 916 to hold the hook tail pin. Hydraulic rod 905 is started, retracting its output end, thus lifting the hook tail pin from the coupler, allowing the coupler to move. Pump 913 is started, pumping air through the air pipe 914 into the airbag 909, causing the airbag 909 to inflate, thus completing the hook-off process.

[0032] In specific application scenarios, the hook-off module 9 is mainly used in the hook-off process. That is, the hook-off module 9 uses the airbag 909 and the connecting frame 906 to pull the hook tail pin and then turn the hook to rotate outward, thereby contacting the closed state of the hook. This allows the front and rear carriages to be re-coupled, avoiding the situation where the closed hooks collide with each other and are damaged, thus improving the success rate of re-coupling.

[0033] A method for double-coupling in railway operations, using a double-coupling system for railway operations as described above, includes the following steps:

[0034] Step 1: Before re-coupling the car body, use the installation and transportation module 8 to quickly fix the robotic arm 6 onto the rotating disk 5, so that the robotic arm 6 can move with the support plate 1 during the re-coupling operation. (Before re-coupling the car body, insert the fixing pin 804 into the rack 807 on the connecting frame 803, overcome the torque of the coil spring 820 to rotate the rotating frame 818, so that the short shaft 815 pushes the movable rod 814 outward, so that the fixing pin 804 can be fully inserted into the fixed seat 812. Release the lever 821, and the movable rod 814 quickly returns to its original position, so that the movable rod 814 is inserted into the annular groove 816, thus fixing the...) The pin 804 fixes the connecting frame 803 to the fixed base 812, so that the fixed platform 10 connected to the robotic arm 6 can be stably placed on the rotating disk 5. When it is necessary to perform re-hooking operation on the carriages on both sides of the support plate 1, the knob 810 is turned. The knob 810 drives the lead screw 809 to rotate, thereby pushing the locking ring 805 to slide on the directional buckle 806, so that the rack 807 releases the lock on the outer gear ring 802. The rotating disk 5 connected to the rotating shaft 801 is rotated, and the rotating disk 5 is rotated 180 degrees so that the robotic arm 6 faces the other side. The knob 810 is rotated in the opposite direction so that the rack 807 relocks the outer gear ring 802.

[0035] Step 2: During the re-coupling operation, start the DC motor 4, which drives the roller 3 to move on the track 7. This allows the hook-pulling module 9 on the robotic arm 6 to approach the coupler. Use the hook-pulling module 9 to lift the hook tail pin on the coupler and perform the hook-pulling operation, thus allowing the couplers of the front and rear carriages to be connected, completing the re-coupling operation. (During the re-coupling operation, start the DC motor 4, which drives the roller 3 to move on the track 7. This allows the hook-pulling module 9 on the robotic arm 6 to approach the coupler. When the robotic arm 6 moves the mounting plate 903 to the coupler position, the connecting frame 906 is positioned at the hook tail pin on the coupler.) Directly above the pin, start motor 2 912. Motor 2 912 drives threaded rod 911 to rotate, thereby causing moving rod 908 to slide on rectangular groove 907 to the position of hook ear hole and insert. Start motor 3 917. Motor 3 917 drives shaft 915 to rotate, thereby causing closed clamp 916 to open, so that clamp 916 can clamp hook tail pin. Start hydraulic rod 905. Output end of hydraulic rod 905 retracts, thereby lifting hook tail pin from coupler, so that coupler can move. Start pump 913. Pump 913 pumps air into air bag 909 through air supply pipe 914, causing air bag 909 to inflate, thereby completing hook breaking.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A double-coupling system for railway operations, comprising a support plate (1), characterized in that, The bottom of the support plate (1) is provided with two symmetrical support frames (2), and two axles are provided on the two support frames (2). Each axle is provided with symmetrical rollers (3), and one of the axles is provided with a DC motor (4). A rotating disk (5) is provided above the support plate (1), and an installation and transportation module (8) is provided above the support plate (1). The installation and transportation module (8) includes a rotating shaft (801). The upper side of the rotating shaft (801) is fixedly connected to the bottom of the rotating disk (5), and the bottom of the rotating shaft (801) is movably connected to the upper side of the support plate (1). A fixed platform (10) is provided on the upper side of the rotating disk (5), and three circumferential rings are fixedly connected to the outside of the fixed platform (10). The connecting frame (803) is distributed at a distance. Each connecting frame (803) has an insertion hole (817). Each insertion hole (817) is slidably connected to a fixing pin (804). The rotating disk (5) has three circumferentially distributed grooves (811). Each groove (811) has an opening on its bottom inner wall. Each opening is fixedly connected to a fixing seat (812). The inner wall of the fixing seat (812) is slidably connected to the outside of the fixing pin (804) on the same side. A mechanical arm (6) is fixedly connected to the upper side of the fixed platform (10). A hook module (9) is provided on the side of the mechanical arm (6) away from the fixed platform (10). The two rollers (3) on the same side are provided with the same track (7). The rotating shaft (801) is fixedly connected to an external gear ring (802), and a locking ring (805) is provided on the outside of the external gear ring (802). The bottom of the locking ring (805) is slidably connected to the upper side of the support plate (1). A directional buckle (806) is slidably connected to the outside of the locking ring (805). The bottom of the directional buckle (806) is fixedly connected to the upper side of the support plate (1). A rack (807) is fixedly connected to the inner wall of the locking ring (805). The rack (807) is engaged with the external gear ring (802). The locking ring (805) is provided with a base (808) on its outside. Both the base (808) and the locking ring (805) have small holes. The same lead screw (809) is provided in the small holes. The lead screw (809) is located on the side of the directional buckle (806) away from the rotating shaft (801). A knob (810) is fixedly connected to the side of the lead screw (809) away from the directional buckle (806). The upper side of the fixed base (812) is provided with three circumferentially distributed grooves (813). A movable rod (814) is slidably connected in each groove (813). A short shaft (815) is fixedly connected to the upper side of each movable rod (814). The hook module (9) includes a connector (901). The end of the robotic arm (6) away from the fixed platform (10) has a slot. A round rod is movably connected in the slot. The outside of the round rod is fixedly connected to the inner wall of the connector (901). A motor (902) is fixedly connected to the outside of the robotic arm (6). The output end of the motor (902) is connected to one side of the round rod through a coupling. A mounting plate (903) is fixedly connected to the bottom of the connector (901). A stabilizing frame (904) is fixedly connected to the upper side of the mounting plate (903). Both the stabilizing frame (904) and the mounting plate (903) have round openings. The same hydraulic rod (905) is fixedly connected in the round openings. A connecting frame (906) is fixedly connected to the output end of the hydraulic rod (905).

2. The double-coupling system for railway operations according to claim 1, characterized in that, The three fixed pins (804) are all slidably connected to the outside of rotating frames (818). The bottom of the three rotating frames (818) is movably connected to the upper side of the three fixed seats (812). The fixed pins (804) are all provided with annular grooves (816). The three movable rods (814) on the same fixed seat (812) are all engaged with the inner wall of the annular groove (816) on the same side. The rotating frames (818) are all provided with three circumferentially distributed curved grooves (819). The inner walls of the three curved grooves (819) on the same side are slidably connected to the outside of the three short shafts (815).

3. A double-coupling system for railway operations according to claim 2, characterized in that, The inner wall of the rotating frame (818) is fixedly connected with a coil spring (820). The end of the coil spring (820) away from the rotating frame (818) is fixedly connected to the outside of the fixed seat (812) on the same side. The outside of the rotating frame (818) is fixedly connected with a lever (821). The bottom of the lever (821) is slidably connected to the bottom inner wall of the groove (811) on the same side.

4. A double-coupling system for railway operations according to claim 1, characterized in that, A shaft (915) is movably connected to the connecting frame (906). A motor (917) is fixedly connected to the outside of the connecting frame (906). The output end of the motor (917) is connected to one side of the shaft (915) through a coupling. Two symmetrical clamps (916) are provided inside the connecting frame (906). A protrusion is fixedly connected to the outside of the shaft (915). The outside of the protrusion is fixedly connected to the outside of one of the clamps (916), and the outside of the other clamp (916) is fixedly connected to the inner wall of the connecting frame (906).

5. A double-coupling system for railway operations according to claim 4, characterized in that, The mounting plate (903) has a rectangular groove (907) and a movable rod (908) is slidably connected in the rectangular groove (907). An airbag (909) is provided on the outside of the movable rod (908). A pump (913) is fixedly connected to the bottom of the mounting plate (903). The output end of the pump (913) is connected to an air supply pipe (914) through a conduit. The end of the air supply pipe (914) away from the pump (913) is fixedly connected to the outside of the airbag (909).

6. A double-coupling system for railway operations according to claim 5, characterized in that, The upper side of the mounting plate (903) is fixedly connected to two symmetrical bosses (910). The two bosses (910) are movably connected to the same threaded rod (911). The moving rod (908) is provided with a circular slot. The inner wall of the circular slot is rotatably connected to the outside of the threaded rod (911) through an external thread. The outside of one of the bosses (910) is fixedly connected to a second motor (912). The output end of the second motor (912) is connected to one side of the threaded rod (911) through a coupling.

7. A method for double-coupling in railway operations, using a double-coupling system for railway operations as described in claim 6, characterized in that, Includes the following steps: Step 1: Before re-coupling the car body, use the installation and transportation module (8) to quickly fix the robotic arm (6) on the turntable (5) so that the robotic arm (6) can move with the support plate (1) during the re-coupling operation. Step 2: When performing the re-coupling operation, start the DC motor (4) so ​​that the DC motor (4) drives the roller (3) to move on the track (7) so that the hook-breaking module (9) on the robotic arm (6) can approach the position of the coupler. Use the hook-breaking module (9) to lift the hook tail pin on the coupler and perform the hook-breaking operation so that the couplers of the front and rear carriages can be connected to complete the re-coupling operation.

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