Railway wagon coupler buffer device and installation method

Abstract

The invention discloses a railway wagon coupler buffer device and an installation method, solves the problems that in the prior art, a coupler buffer device is small in passing radius and has safety risks, and has the beneficial effects that the vehicle passing ability is guaranteed, and the operation risk is reduced. The supporting component is located on the inner side of the vehicle body end plate, the supporting component and the vehicle body end plate are arranged at intervals, a connecting hook and a traction hook are movably arranged at the two ends of the supporting component respectively and penetrate through the vehicle body end plate, and an elastic buffering mechanism is arranged on the other side, opposite to the connecting hook, of the supporting component. One end of the elastic buffering mechanism is movably connected with the supporting component, the elastic buffering mechanism is connected with the vehicle body, the traction hook is connected with a connecting hook at the end of another vehicle body through a connecting component, the connecting hook is connected with a traction hook at the end of another vehicle body through a connecting component, the length of the connecting component is adjustable, and the connecting component can be locked after the length of the connecting component is adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of railway freight cars, in particular to a railway freight car coupler buffer device and an installation method thereof. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] For trains, two adjacent vehicles are connected by a coupler, and a buffer is provided between the two vehicles. For railway freight cars, the number of vehicles in the train is usually large. Now the transportation capacity and speed of railway freight cars are increasing. At present, a coupler buffer device is provided between two adjacent vehicles of railway freight cars. One is a fixed coupler, which is not conducive to the unmarshaling and coupling of vehicles; the second is a coupler with a chain hook, which is convenient for unmarshaling and coupling, but there are still the following problems:

[0004] In the railway freight car coupler buffer device equipped with a chain hook, the buffers are on both sides of the car body end, and the chain hook is in the middle, so the swing angle of the coupler is small and the vehicle's ability to pass the curve radius is poor;

[0005] For the coupler buffer device with the chain hook in the middle, the operator needs to enter the center of the vehicle end to loosen or connect the chain hook when uncoupling and coupling the vehicle. The operator needs to enter the inside of the buffer to operate the coupler before the vehicle stops. The mass of the buffer is large, and the mass of the vehicle is also large. Once the vehicle loses control or the speed is too fast, and the operator is not in place, it is very dangerous for the operator, and may even lead to major accidents such as life-threatening. Summary of the invention

[0006] In view of the deficiencies in the prior art, the object of the present invention is to provide a railway freight car coupler buffer device that can meet the needs of vehicles passing through curves with increasing radius, making it safer for operators to perform vehicle unmarshalling operations more efficiently.

[0007] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0008] A railway freight car coupler buffer device comprises a supporting member, the supporting member is located on the inner side of a car body end plate, the supporting member and the car body end plate are spaced apart from each other, connecting hooks and traction hooks are movably provided at both ends of the supporting member, both the connecting hooks and traction hooks are provided through the car body end plate, an elastic buffer mechanism is provided on the other side of the supporting member relative to the connecting hook, one end of the elastic buffer mechanism is movably connected to the supporting member, the elastic buffer mechanism is connected to the car body, the traction hook is connected to the connecting hook at the other end of the car body through the connecting member, the connecting hook is connected to the traction hook at the other end of the car body through the connecting member, the length of the connecting member is adjustable and can be locked after the length adjustment is completed, the connecting member can move relative to the connecting hook, a buffer is fixedly provided on the car body end plate between the traction hook and the connecting hook, and the buffer is provided away from the elastic buffer mechanism.

[0009] In the railway freight car coupler buffer device as described above, the traction hook and the connecting hook both include a rod body, and the rod body is movably connected to the end of the supporting member. The end of the rod body of the traction hook is provided with an open hook body, and the end of the connecting hook is provided with a closed hook body.

[0010] As described above, a railway freight car coupler buffer device, the connecting component includes two connecting chain links arranged opposite to each other, one of the connecting chain links passes through the connecting hook, the two connecting chain links are connected by a threaded pull rod, a connecting screw sleeve is arranged at the open end of the connecting chain link, a threaded screw rod passes through the connecting screw sleeve and is tightly connected to the screw sleeve, and an operating member is arranged at the threaded screw rod.

[0011] A railway freight car coupler buffer device as described above, wherein threads are arranged on both sides of the threaded screw to respectively cooperate with the connecting screw sleeves, the threads on both sides of the threaded screw are arranged in opposite directions, and a smooth rod is provided between the threads on both sides of the threaded screw;

[0012] The operating member is a handle rotating clamp ring, which includes two semicircular rings. The two semicircular rings are sleeved on the rings of the polished rod and fixed backwards through elastic round pins, and a handle is fixed to one of the semicircular rings.

[0013] In the railway freight car coupler buffer device as described above, the elastic buffer mechanism includes a traction rod, one end of which is connected to the supporting member, the traction rod is circumferentially covered with an impact seat plate, an elastic component, a pull rod end cover and a first fastener in sequence, and the impact seat plate is connected to the car body.

[0014] A railway freight car coupler buffer device as described above, wherein the elastic assembly comprises a plurality of elastic components, and a pad is provided between two adjacent elastic components;

[0015] The first fastener comprises a nut, and a first cotter pin is arranged after the nut locks the traction rod.

[0016] In the railway freight car coupler buffer device as described above, a U-shaped connecting seat is provided at one end of the traction rod, and a groove is provided at the U-shaped connecting seat. The width of the groove is greater than or equal to the thickness of the supporting member, and the U-shaped connecting seat is connected to the supporting member through a connecting pin.

[0017] A railway freight car coupler buffer device as described above, wherein the support member comprises two support plates, the two support plates are arranged at a distance and are fixedly connected; the end sides of the two support plates are respectively connected to the connecting hook and the traction hook;

[0018] The center of the supporting member on one side away from the vehicle body end plate is connected to the elastic buffer mechanism.

[0019] As described above, a railway freight car coupler buffer device has a mounting plate at one end of the buffer, the mounting plate is connected to the car body end plate, the other end of the buffer is enlarged, the connecting component connected to the connecting hook exceeds the buffer setting, and the buffer exceeds the traction hook setting.

[0020] In a second aspect, the present invention further provides a method for installing a railway freight car coupler buffer device, comprising the following contents:

[0021] A support member is arranged on the inner side of the vehicle body end plate, the support member is connected to the vehicle body through an elastic buffer mechanism, and a buffer is fixed on the side of the vehicle body end plate away from the elastic buffer mechanism;

[0022] One end of the supporting member is movably connected to the connecting hook, and the other end is movably connected to the traction hook;

[0023] The connecting hook and the towing hook are respectively arranged through the vehicle body end plates;

[0024] One end of the connecting member is connected to the connecting hook;

[0025] Loosen the connecting member to lengthen the connecting member. After the two vehicles approach, the connecting members on both sides are connected with the corresponding towing hooks in turn. After the connection is completed, shorten the length of the connecting member and lock the connecting member.

[0026] The beneficial effects of the present invention are as follows:

[0027] 1) In the present invention, the towing hook and the connecting hook are connected by a supporting member, and the supporting member is also connected to the elastic buffer mechanism, so that the positions of the buffer and the coupler (the towing hook and the connecting hook) are adjusted, and the buffer is set between the towing hook and the connecting hook, and a connecting member is set at the connecting hook, so that the connecting hook can be connected to the towing hook of another vehicle through the connecting hook, and the towing hook is connected to the connecting member of the other vehicle. Because the connecting member is movable relative to the connecting hook, the connecting member is not fixed during the operation of the vehicle, and the connecting member is not located at the center of the vehicle, but at the side, so as to ensure the passability of the vehicle, so that the vehicle can pass easily, the ability to pass through curves is enhanced, and it can adapt to more severe environments; and when the operator is unmarshaling or coupling, he needs to enter the inner side of the buffer, and can operate after the vehicle stops, which greatly improves the safety of the operation.

[0028] 2) The overall structure of the present invention is reasonably arranged. The supporting member is located on the inner side of the vehicle body end plate to ensure the connection between the outer side of the vehicle body end plate and the buffer. Towing hooks and connecting hooks are arranged at both ends of the supporting member. The towing hooks and connecting hooks are arranged through the vehicle body end plate. The towing hooks and connecting hooks are located on one side of the supporting member, and the other side of the supporting member away from the vehicle body end plate is connected to the elastic buffer mechanism. In this way, the reasonable arrangement of various components is ensured, and the vehicle's passability can be guaranteed under the premise of effective buffering.

[0029] 3) In the present invention, the support member is movably connected to the connecting hook and the towing hook, so that the connecting hook and the towing hook can swing relative to the support member. They are not fixed on the vehicle end plate, but are movably fixed to the two ends of the support member. When the vehicle turns, the support member is tilted toward the outer towing component, further ensuring the vehicle's passability.

[0030] 4) The connecting member structure of the present invention is reasonably arranged, and is arranged by passing the connecting hook through the connecting chain ring, so that the connecting member can move relative to the connecting hook during the operation of the vehicle. The connecting chain rings on both sides are then connected by threaded screws. The threaded screws are loosened when the vehicle is unwound or coupled, and then tightened after connection, which is convenient for operation.

[0031] 5) The elastic buffer mechanism in the present invention has a reasonable structure, and the elastic buffer mechanism is movably connected to the supporting member to ensure the flexibility of the movement of the elastic buffer mechanism. The circumferential sleeve of the traction rod in the elastic buffer mechanism is provided with an impact seat plate, an elastic component and a pull rod end cover, and is locked by a first fastener to effectively absorb the force between vehicles and ensure the buffering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0033] Figure 1 It is a front view of a railway freight car coupler buffer device according to one or more embodiments of the present invention.

[0034] Figure 2 It is a top view of a railway freight car coupler buffer device according to one or more embodiments of the present invention.

[0035] Figure 3 It is a front view of a first element in a railway freight car coupler buffer device according to one or more embodiments of the present invention.

[0036] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0037] Wherein: 1. connecting chain link, 2. threaded pull rod, 3. right-handed connecting screw sleeve, 4. left-handed connecting screw sleeve, 5. connecting hook, 6. support plate, 7. towing hook, 8. handle rotating clamp, 9. handle, 10. towing rod, 11. connecting pin, 12. impact seat plate, 13. elastic device, 14. pull rod end cover, 15. nut, 16. buffer, 17. round pin, 18. second cotter pin, 19. first cotter pin, 20. washer, 21. elastic round pin, 22. rivet, 23. vehicle body end plate, 24. pad. DETAILED DESCRIPTION

[0038] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof;

[0040] As introduced in the background technology, the coupler buffer device in the prior art has the problem of small radius and safety risks when the operator connects. In order to solve the above technical problems, the present invention proposes a railway freight car coupler buffer device.

[0041] Embodiment 1

[0042] In a typical embodiment of the present invention, reference is made to Figure 1As shown, a railway freight car coupler buffer device comprises a supporting member, the supporting member is located on the inner side of a car body end plate 23, the supporting member and the car body end plate 23 are spaced apart, a connecting hook 5 and a traction hook 7 are movably provided at both ends of the supporting member, both the connecting hook 5 and the traction hook 7 are provided through the car body end plate 23, an elastic buffer mechanism is provided on the other side of the supporting member relative to the connecting hook 5, one end of the elastic buffer mechanism is movably connected to the supporting member, the elastic buffer mechanism is connected to the car body, the traction hook 7 is connected to the connecting hook 5 at the other end of the car body through the connecting member, the connecting hook 5 is connected to the traction hook 7 at the other end of the car body through the connecting member, the length of the connecting member is adjustable and can be locked after the length adjustment is completed, the connecting member can move relative to the connecting hook, a buffer 16 is fixedly provided between the traction hook 7 and the connecting hook 5 on the car body end plate 23, and the buffer 16 is provided away from the elastic buffer mechanism.

[0043] It is easy to understand that the connecting hook 5 and the towing hook 7 both include a rod body, and the rod body and the end of the supporting member are movably connected. Specifically, a ring is provided at one end of the rod body, and the ring is sleeved on the round pin 17. The round pin 17 is fixed to the two ends of the supporting member. After the round pin 17 is connected to the rod body or the supporting member, it is fixed by a second open pin 18. The end of the rod body of the connecting hook 5 is provided with a closed hook body, and the end of the rod body of the towing hook 7 is provided with an open hook body.

[0044] In this embodiment, the lengths of the connecting hook 5 and the traction hook 7 can be the same, the connecting member connected to the connecting hook is beyond the buffer setting, and the buffer is beyond the traction hook setting.

[0045] It should be noted that the connecting component includes two relatively arranged connecting chain links 1, the connecting chain links 1 are U-shaped, the length of the connecting chain links 1 is greater than the length of the connecting hook body, the two connecting chain links 1 are connected by a threaded pull rod 2, and a connecting screw sleeve is arranged at the open end of the connecting chain link 1, and the threaded screw 2 passes through the connecting screw sleeve and is tightly connected with the screw sleeve. During installation, the first connecting chain link 1 is inserted into the cavity of the hook body at the end of the connecting hook 5, and then the two connecting chain links 1 are connected with the right-handed connecting screw sleeve 3 and the left-handed connecting screw sleeve 4 by heating and deformation. The right-handed connecting screw sleeve 3 and the left-handed connecting screw sleeve 4 are internally threaded in the middle, and the thread directions are exactly opposite, one is right-handed and the other is left-handed.

[0046] Correspondingly, threads are arranged on both sides of the threaded rod 2, and the threads on both sides are in opposite directions, which just match the thread structures of the right-handed connecting screw sleeve 3 and the left-handed connecting screw sleeve 4, and the middle section of the threaded rod is a smooth rod.

[0047] In this embodiment, a handle rotating snap ring 8 is circumferentially arranged on the threaded rod 2, and the handle rotating snap ring 8 includes two semicircular rings, which are fixed to the threaded rod 2 in the circumferential direction and fixed backward by elastic round pins 21. A handle 9 is fixed to one of the semicircular rings. The handle rotating snap ring 8 is fixed to the bare rod in the middle of the threaded rod 2 by the setting of the elastic round pin 21. In this way, the handle rotating snap ring 8 is connected to the threaded rod 2 as a whole, and the handle rotating snap ring 8 is used to drive the threaded rod 2 to rotate relative to the right-handed connecting screw sleeve 3 and the left-handed connecting screw sleeve 4, thereby loosening the threaded rod 2 relative to the right-handed connecting screw sleeve 3 and the left-handed connecting screw sleeve 4, so as to facilitate the connection or release of the connecting hook with the traction hook.

[0048] It is easy to understand that the support member specifically includes two support plates 6, the two support plates 6 are arranged up and down, and the two support plates 6 are arranged parallel to each other, the support plates 6 are arranged vertically relative to the vertically arranged vehicle body end plate 23, the vehicle body end plate 23 and the support plates 6 are spaced at a distance, the two support plates 6 are spaced at a distance, and the two support plates 6 are connected by multiple rivets 22 to enhance the strength of the support member, and the support member is connected to the U-shaped connecting seat at the end of the traction rod 10 by a connecting pin 11. After the connecting pin 11 passes through the support member and the U-shaped connecting seat, a third open pin is provided, and a fixing effect is played by the third open pin.

[0049] Specifically, the width of the middle part of the support plate 6 is greater than the width of its two ends. The distance between the two support plates 6 is set to facilitate the installation of the connecting hook 5 and the towing hook 7. The support plate 6 is located on the inner side of the vehicle body end plate and is connected to the connecting hook 5 and the towing hook 7 through the ends of the two support plates.

[0050] In this embodiment, the elastic buffer mechanism includes a traction rod 10, and a U-shaped connecting seat is set at one end of the traction rod 10. It is easy to understand that the U-shaped connecting seat is set with a groove, the width of the groove is greater than or equal to the thickness of the two support plates 6 in the supporting member, and the U-shaped connecting seat is connected to the supporting member through a connecting pin 11.

[0051] An impact seat plate 12, an elastic component, a pull rod end cover 14 and a first fastener are sequentially sleeved in a circumferential direction on one side of the traction rod 10 away from the U-shaped connecting seat. The impact seat plate 12 is arranged close to the U-shaped connecting seat. The impact seat plate 12 is used for connection with the vehicle body to achieve overall fixation to the vehicle body. The elastic component includes two elastic components 13, which are specifically rubber elastic rings for absorbing energy. A pad 24 is arranged between the two elastic components 13, and the outer diameter of the pad 24 is greater than the outer diameter of the elastic component 13; the first fastener is specifically a nut 15, a washer 20 is arranged on the inner side of the nut 15, and a first cotter pin 19 is fixed on the outer side of the nut.

[0052] It is easy to understand that the number of the elastic components 13 can also be 3 or 4, and a pad 24 is provided between two adjacent elastic components.

[0053] It should be noted that the impact seat plate 12 is a square plate, the side length of the impact seat plate 12 is greater than the diameter of the elastic component 13, and openings are respectively provided at the four corners of the impact seat plate 12 for connection with the vehicle body; the tie rod end cover 14 is a circular cover, and the outer diameter of the side of the tie rod end cover close to the nut 15 gradually decreases, and the maximum outer diameter of the tie rod end cover 14 is greater than the outer diameter of the gasket 24.

[0054] Specifically, during installation, the impact seat plate 12 is inserted into the traction rod 10, the elastic component 13 is inserted into the traction rod, the pad 24 is added, the elastic component 13 is inserted again, and then the pull rod end cover 14 is inserted. After the pull rod end cover 14 contacts the elastic component, a washer 20 is set at the traction rod 10 and fastened with a nut 15, and finally the first cotter pin 19 is installed in the position of the end hole of the traction rod 10, so that the elastic buffer mechanism is installed. After installation, the impact seat plate 12 is connected to the vehicle body impact seat (not shown) so that the hook can be fixed on the vehicle body.

[0055] In this embodiment, the buffer 16 specifically adopts an existing metal buffer, and a mounting plate is provided at one end of the buffer, and the mounting plate is connected to the vehicle body end plate 23 by bolts and nuts, so that the buffer 16 is fixed at the central position on the vehicle body end beam, so that the vehicle can play a role in buffering the vehicle during operation; the size of the other end of the buffer 16 away from the vehicle body end plate 23 is increased, so that the end of the buffer away from the vehicle body end plate is a transversely arranged T-shape, so that when the vehicles come into contact, the buffer can effectively absorb the energy between the vehicles.

[0056] The device provided in this embodiment connects the towing hook and the connecting hook through a supporting member, and the supporting member is also connected to the elastic buffer mechanism, so that the positions of the buffer and the coupler (the towing hook and the connecting hook) are adjusted, and the buffer is set between the towing hook and the connecting hook, and a connecting member is set at the connecting hook, so that the connecting hook can be connected to the towing hook of another vehicle through the connecting hook, and the towing hook is connected to the connecting member of the other vehicle. Because the connecting member is movable relative to the connecting hook, the connecting member is not fixed during the operation of the vehicle, and the connecting member is not located at the center of the vehicle, but at the side, thereby ensuring the passability of the vehicle, the vehicle can pass easily, the ability to pass through curves is enhanced, and it can adapt to more severe environments; and when the operator is unmarshaling or coupling, he needs to enter the inner side of the buffer, and can operate after the vehicle stops, which greatly improves the safety of the operation.

[0057] Embodiment 2

[0058] This embodiment provides a method for installing a railway freight car coupler buffer device in Embodiment 1, including the following contents:

[0059] A support member is arranged on the inner side of the vehicle body end plate, a side of the support member away from the vehicle body end plate is connected to the vehicle body through an elastic buffer mechanism, and a buffer is fixed on a side of the vehicle body end plate away from the elastic buffer mechanism;

[0060] One end of the supporting member is movably connected to the connecting hook, and the other end is movably connected to the traction hook;

[0061] The connecting hook and the towing hook are respectively arranged through the vehicle body end plates;

[0062] One end of the connecting member is connected to the connecting hook;

[0063] Loosen the connecting member to lengthen the connecting member. After the two vehicles approach, the connecting members on both sides are connected with the corresponding towing hooks in turn. After the connection is completed, shorten the length of the connecting member and lock the connecting member.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A railway freight car coupler buffer device, characterized in that: The invention comprises a supporting member, wherein the supporting member is located on the inner side of the vehicle body end plate, the supporting member and the vehicle body end plate are spaced apart from each other, connecting hooks and towing hooks are movably arranged at both ends of the supporting member, the connecting hooks and the towing hooks are both arranged through the vehicle body end plate, an elastic buffer mechanism is arranged on the other side of the supporting member relative to the connecting hook, one end of the elastic buffer mechanism is movably connected to the supporting member, the elastic buffer mechanism is connected to the vehicle body, the towing hook is connected to the connecting hook at the other end of the vehicle body through the connecting member, the connecting hook is connected to the towing hook at the other end of the vehicle body through the connecting member, the length of the connecting member is adjustable and can be locked after the length adjustment is completed, the connecting member can move relative to the connecting hook, a buffer is fixedly arranged on the vehicle body end plate between the towing hook and the connecting hook, and the buffer is arranged away from the elastic buffer mechanism.

2. A railway freight car coupler buffer device according to claim 1, characterized in that: The traction hook and the connecting hook both include a rod body, and the rod body is movably connected to the end of the supporting member. The end of the rod body of the traction hook is provided with an open hook body, and the end of the connecting hook is provided with a closed hook body.

3. A railway freight car coupler buffer device according to claim 1, characterized in that: The connecting component includes two connecting chain links arranged opposite to each other, one of which passes through the connecting hook, and the two connecting chain links are connected by a threaded pull rod. A connecting screw sleeve is arranged at the open end of the connecting chain link, and a threaded screw passes through the connecting screw sleeve and is tightly connected to the screw sleeve, and an operating member is arranged at the threaded screw sleeve.

4. A railway freight car coupler buffer device according to claim 3, characterized in that: Both sides of the threaded screw are provided with threads to respectively cooperate with the connecting screw sleeves, the threads on both sides of the threaded screw are arranged in opposite directions, and a polished rod is provided between the threads on both sides of the threaded screw; The operating part is a handle rotating clamp ring, which includes two semicircular rings. The two semicircular rings are sleeved on the polished rod and fixed by elastic round pins, and a handle is fixed on one of the semicircular rings.

5. The railway freight car coupler buffer device according to claim 1, characterized in that: The elastic buffer mechanism comprises a traction rod, one end of which is connected to the supporting member, an impact seat plate, an elastic component, a pull rod end cover and a first fastener are sequentially sleeved on the traction rod in a circular direction, and the impact seat plate is connected to the vehicle body.

6. A railway freight car coupler buffer device according to claim 5, characterized in that: The elastic component includes a plurality of elastic components, and a pad is arranged between two adjacent elastic components; The first fastener comprises a nut, and a first cotter pin is arranged after the nut locks the traction rod.

7. A railway freight car coupler buffer device according to claim 5, characterized in that: A U-shaped connection seat is arranged at one end of the traction rod, and a groove is arranged at the U-shaped connection seat. The width of the groove is greater than or equal to the thickness of the supporting member. The U-shaped connection seat is connected to the supporting member through a connecting pin.

8. The railway freight car coupler buffer device according to claim 1, characterized in that: The support member comprises two support plates, which are spaced apart and fixedly connected; the ends of the two support plates are respectively connected to the connecting hook and the traction hook; The center of the supporting member on one side away from the vehicle body end plate is connected to the elastic buffer mechanism.

9. The railway freight car coupler buffer device according to claim 1, characterized in that: A mounting plate is arranged at one end of the buffer, and the mounting plate is connected to the vehicle body end plate. The size of the other end of the buffer is increased, and the connecting component connected to the connecting hook exceeds the buffer setting, and the buffer exceeds the traction hook setting.

10. A method for installing a railway freight car coupler buffer device according to claims 1-9, characterized in that: It includes the following: A support member is arranged on the inner side of the vehicle body end plate, the support member is connected to the vehicle body through an elastic buffer mechanism, and a buffer is fixed on the side of the vehicle body end plate away from the elastic buffer mechanism; One end of the supporting member is movably connected to the connecting hook, and the other end is movably connected to the traction hook; The connecting hook and the towing hook are respectively arranged through the vehicle body end plates; One end of the connecting member is connected to the connecting hook; Loosen the connecting member to lengthen the connecting member. After the two vehicles approach, the connecting members on both sides are connected with the corresponding towing hooks in turn. After the connection is completed, shorten the length of the connecting member and lock the connecting member.

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