Coupler yoke pin anti-falling device

Abstract

The utility model relates to the technical field of coupler yoke pins, and discloses a coupler yoke pin anti-falling device which comprises an anti-falling shell, a fixing plate is installed on the inner side of the anti-falling shell in a clamped mode, and a coupler yoke pin body is arranged on the top side of the fixing plate. When the coupler yoke pin body is installed, in the process of rotating the fixing sleeve, the buffering rubber block moves upwards along with the fixing sleeve, so that the fixing plate and the coupler yoke pin body are driven to move upwards, and at the moment, in the upward moving process of the fixing plate, the limiting block makes contact with the limiting sleeve and slides; the limiting outer column slides towards one side of the coupler yoke pin body until the limiting outer column is clamped to the outer side of the coupler yoke pin body for limiting, so that the coupler yoke pin body is prevented from falling off in the using process, acting force generated in the using process can be buffered under the action of a buffering pad and a buffering rubber block, and the using effect of the coupler yoke pin is improved. And collision between the coupler yoke pin body and the anti-falling mechanism is reduced, and the service life of the device is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the hook tail pin technical field, concretely is a hook tail pin anti -drop device. BACKGROUND

[0002] With the implementation of the long-term railway network planning, the railway and rail transit development of our country has remarkable results, among which the railway transportation plays an important role in promoting economic and social development, guaranteeing and improving people's livelihood, supporting the implementation of national major strategies, and enhancing China's comprehensive strength and international influence. The hook tail anti-drop problem of the railway locomotive running gear cannot be avoided when talking about railway transportation. Due to the particularity of railway transportation, it needs to be frequently scattered and connected, so there is a high requirement for the convenience of the connecting mechanism. The existing technology generally uses a coupler to connect the car body, the coupler generally uses a pin connection, and the hook tail pin at the tail of the coupler uses a pin connection from bottom to top.

[0003] According to the search, the Chinese patent literature, publication number: CN202022733647.9, discloses a hook tail pin anti-drop device applied to the running gear of a railway locomotive. The device uses a geometric mechanism to achieve anti-drop, has the characteristics of simple structure, high reliability, and low cost, and forms an anti-drop space one between the end plate one and the web plate one. The end plate two and the web plate two form an anti-drop space two. The limiting pin is arranged from the end side of the web plate one to the end side of the web plate two. When the end of the limiting pin contacts the end plate one, the other end of the limiting pin in the length direction is still located in the anti-drop space two. Even if the anti-drop nut and the anti-drop insert fail simultaneously, the limiting pin will not fall off. At the same time, the limiting element limits one end of the hook tail pin, achieving the effect of anti-drop. However, during use, the hook tail pin and the coupler are connected movably, so different impact forces will be generated in different directions during use, causing the hook tail pin to shake and collide inside the anti-drop space two, resulting in deformation of the sliding sleeve and loss of the limiting effect, thus causing the hook tail pin to fall off and reducing the service life. UTILITY MODEL CONTENTS

[0004] (I) Technical problem solved

[0005] To solve the above technical problems, the utility model provides a hook tail pin anti-drop device, which has the advantages of preventing the hook tail pin from falling off, buffering and damping, and prolonging the service life.

[0006] (II) Technical scheme

[0007] To achieve the above object, the utility model provides the following technical scheme: A hook tail pin anti -drop device, including anti -drop shell, the inside of anti -drop shell is equipped with fixed plate through the clamping installation, the top side of fixed plate is provided with hook tail pin body, the top side of fixed plate is provided with anti -drop mechanism, the inside of anti -drop shell is equipped with fixed sleeve through screw thread connection, the top side of anti -drop shell is provided with buffer pad, the top side of buffer pad is provided with car hook, the car hook is provided with hook tongue, hook tail, the hook tail is used for connecting the outside of hook tail pin body, hook tongue is used for connecting another locomotive.

[0008] Preferably, the inside of the anti-drop shell is provided with a clamping groove, the bottom side of the anti-drop shell is provided with a matching groove, and the side of the matching groove close to the clamping groove is provided with a thread, and the bottom side of the anti-drop shell is provided with a connecting hole.

[0009] Through the above technical scheme, when assembling, the matching groove is used to connect the fixed sleeve, and the clamping groove can limit the position of the fixed plate.

[0010] Preferably, the anti-drop mechanism includes a sliding groove, a sliding block, a fixed rod, a sleeve body, a return spring, a limiting outer column, and a limiting inner column. The inside diameter of the sleeve body matches the fixed rod. The fixed rod is fixedly installed on one side of the sliding block close to the sleeve body. The limiting outer column is provided with a spring body.

[0011] Through the above technical scheme, when installing, the buffer rubber block moves up during the rotation of the fixed sleeve, thereby driving the fixed plate and the hook tail pin body to move up. At this time, the limiting block contacts and slides with the limiting sleeve during the upward movement of the fixed plate, thereby making the limiting outer column slide to one side of the hook tail pin body. Until the limiting outer column is clamped on the outside of the hook tail pin body to limit, thereby avoiding the falling of the hook tail pin body during use.

[0012] Preferably, the limiting outer column is fixedly installed with a limiting block on one side close to the anti-drop shell. The limiting block is provided with two limiting blocks. The side of the limiting block close to the anti-drop shell is an inclined structure. The anti-drop mechanism is provided with two groups. The anti-drop mechanism is respectively arranged on the left and right ends of the top side of the fixed plate.

[0013] Through the above technical scheme, when assembling the fixed sleeve, the limiting block contacts and slides with the limiting sleeve during the upward movement of the fixed plate, thereby making the limiting outer column slide to one side of the hook tail pin body.

[0014] Preferably, the limiting sleeve is fixedly installed on the top side of the inside of the anti-drop shell. The inside of the limiting sleeve is an inclined structure. The contact surface of the inclined surface of the limiting sleeve and the limiting block is relatively smooth.

[0015] Through the technical scheme, when the hook tail pin body is limited and installed, the interaction force is generated between the limiting sleeve and the limiting block, thereby providing power for the movement of the limiting outer column.

[0016] Preferably, the inner side of the fixing sleeve is provided with a connecting thread, the bottom side of the inner side of the fixing sleeve is fixedly installed with a buffer rubber block, and the front side of the anti-falling shell is provided with an inspection window.

[0017] Through the technical scheme, when in use, the action force generated in the use process can be buffered under the action of the buffer pad and the buffer rubber pad.

[0018] Compared with the prior art, the anti-falling device for the hook tail pin has the following beneficial effects:

[0019] 1. When the hook tail pin body is installed, the buffer rubber block is moved upward during the rotation of the fixing sleeve, thereby driving the fixed plate and the hook tail pin body to move upward. At this time, the limiting block and the limiting sleeve are in contact and slide during the upward movement of the fixed plate, so that the limiting outer column slides to one side of the hook tail pin body, until the limiting outer column is clamped on the outer side of the hook tail pin body for limiting, thereby avoiding the falling of the hook tail pin body during use. The action force generated in the use process can be buffered under the action of the buffer pad and the buffer rubber block, the collision between the hook tail pin body and the anti-falling mechanism is reduced, and the service life of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0021] Figure 2 It is a sectional structure schematic diagram of the utility model;

[0022] Figure 3 It is a three-dimensional explosion structure schematic diagram of the utility model;

[0023] Figure 4 It is a bottom view structure schematic diagram of the utility model;

[0024] Figure 5 It is a fixed plate top view structure schematic diagram of the utility model.

[0025] Wherein: 1, anti-falling shell; 2, fixed plate; 3, hook tail pin body; 4, anti-falling mechanism; 5, fixed sleeve; 6, buffer pad; 7, car hook; 8, limiting sleeve; 101, card slot; 102, slot; 103, connecting hole; 401, sliding groove; 402, sliding block; 403, fixed rod; 404, sleeve body; 405, reset spring; 406, limiting outer column; 407, limiting inner column; 4061, limiting block; 502, buffer rubber block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] Embodiment one:

[0028] As Figures 1-2 shown, the utility model provides a kind of hook tail pin anti-falling device, including anti-falling shell 1, the inside of anti-falling shell 1 is equipped with fixed plate 2 by clamping installation, the top side of fixed plate 2 is provided with hook tail pin body 3, the top side of fixed plate 2 is provided with anti-falling mechanism 4, the inside of anti-falling shell 1 is connected with fixed sleeve 5 by screw thread, the top side of anti-falling shell 1 is provided with buffer pad 6, the top side of buffer pad 6 is provided with car hook 7, car hook 7 is provided with tongue, hook tail, hook tail is used to connect the outside of hook tail pin body 3, the tongue is used to connect another locomotive, by limiting outer column 406 clamping in the outside of hook tail pin body 3 and limiting, to avoid the falling of hook tail pin body 3 in the process of use.

[0029] Specifically, the inside of anti-falling shell 1 is equipped with card slot 101, the bottom side of anti-falling shell 1 is equipped with slot 102, and the side close to card slot 101 of slot 102 is equipped with screw thread, the bottom side of anti-falling shell 1 is equipped with connecting hole 103, the advantage is, when assembling, slot 102 is used for connecting fixed sleeve 5, and simultaneously, card slot 101 can limit the position of fixed plate 2.

[0030] Specific, anti-falling mechanism 4 includes chute 401, sliding block 402, fixed rod 403, sleeve body 404, reset spring 405, limit outer column 406, limit inner column 407, the inside diameter of sleeve body 404 matches fixed rod 403, fixed rod 403 is fixedly installed on one side of sliding block 402 close to sleeve body 404, limit outer column 406 is provided with spring body, the advantage is, in the process of moving limit outer column 406, fixed rod 403 is clamped in the inside of sleeve body 404, thereby improving the stability of the device, and the limit inner column 407 is used to limit the hook tail pin body 3.

[0031] Specific, limit outer column 406 is fixedly installed with limit block 4061 on one side close to anti-falling shell 1, and limit block 4061 is provided with two limit blocks in total, one side of limit block 4061 close to anti-falling shell 1 is inclined structure, anti-falling mechanism 4 is provided with two groups in total, and anti-falling mechanism 4 is arranged at the left and right ends of the top side of fixed plate 2 respectively, the advantage is, in the process of rotating fixed sleeve 5, buffer rubber block 502 is moved upwards, thereby driving fixed plate 2 and hook tail pin body 3 to move upwards, at this time, limit block 4061 contacts and slides with limit sleeve 8 in the process of moving upwards of fixed plate 2, thereby making limit outer column 406 slide to one side of hook tail pin body 3, until limit outer column 406 is clamped on the outside of hook tail pin body 3 to limit, thereby avoiding the falling of hook tail pin body 3 in the process of use.

[0032] Embodiment two:

[0033] As shown in Figures 3-5 the improvement of the last embodiment. Specifically, limit sleeve 8 is fixedly installed on the top side of the inside of anti-falling shell 1, the inside of limit sleeve 8 is inclined structure, and the contact surface of the inclined surface of limit sleeve 8 and limit block 4061 is relatively smooth, the advantage is, when limiting and installing hook tail pin body 3, limit sleeve 8 and limit block 4061 interact to provide power for the movement of limit outer column 406.

[0034] Specifically, connecting threads are formed in the inside of fixed sleeve 5, buffer rubber block 502 is fixedly installed on the bottom side of the inside of fixed sleeve 5, and inspection window is arranged on the front side of anti-falling shell 1, the advantage is, the action force generated in the process of use can be buffered by the action of buffer pad 6 and buffer rubber block 502, the collision between hook tail pin body 3 and anti-falling mechanism 4 is reduced, and the service life of the device is improved.

[0035] In use, the fixed plate 2 is taken out, then the tail end of the hook tail pin body 3 is clamped inside the groove hole on the top side of the fixed plate 2, at this time the limiting inner column 407 limits the outer side of the hook tail pin body 3 under the action of the spring body, then the side of the column body with the groove hole on the outer side of the fixed plate 2 is outward, and is clamped inside the clamping groove 101, so that the hook tail pin body 3 passes through the through hole on the top side of the anti-falling shell 1, then the fixed sleeve 5 is installed on the bottom side of the anti-falling shell 1 by screwing, so as to fix the hook tail pin body 3, and when the hook tail pin body 3 is installed, the buffer rubber block 502 is moved upward during the rotation of the fixed sleeve 5, so as to drive the fixed plate 2 and the hook tail pin body 3 to move upward, at this time the limiting block 4061 on the fixed plate 2 is in contact with the limiting sleeve 8 and slides, so that the limiting outer column 406 slides to one side of the hook tail pin body 3, until the limiting outer column 406 is clamped on the outer side of the hook tail pin body 3 to limit, so as to avoid the hook tail pin body 3 from falling off during use, then the buffer pad 6 and the hook tail of the drawbar 7 are sequentially sleeved on the outer side of the hook tail pin body 3, then the drawbar 7 is connected to another locomotive, at this time the hook tail pin can be driven by external force, so that the drawbar 7 and the anti-falling shell 1 are switched between the locked state and the unlocked state, then the anti-falling shell 1 is fixed by using the bolt passing through the connecting hole 103, and the action force generated during use can be buffered by the buffer pad 6 and the buffer rubber block 502, reducing the collision between the hook tail pin body 3 and the anti-falling mechanism 4, and improving the service life of the device.

[0036] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A hook-tail pin anti-detachment device, comprising an anti-detachment housing (1), characterized in that: The inner side of the anti-detachment housing (1) is fitted with a fixing plate (2) by snapping. The top side of the fixing plate (2) is provided with a hook tail pin body (3). The top side of the fixing plate (2) is provided with an anti-detachment mechanism (4). The inner side of the anti-detachment housing (1) is connected with a fixing sleeve (5) by thread. The top side of the anti-detachment housing (1) is provided with a buffer pad (6). The top side of the buffer pad (6) is provided with a car coupler (7). The car coupler (7) is provided with a hook tongue and a hook tail. The hook tail is used to connect to the outside of the hook tail pin body (3). The hook tongue is used to connect to another locomotive.

2. The hook-tail pin anti-detachment device according to claim 1, characterized in that: The inner side of the anti-detachment shell (1) is provided with a slot (101), the bottom side of the anti-detachment shell (1) is provided with a fitting groove (102), and the fitting groove (102) is provided with a thread on the side near the slot (101). The bottom side of the anti-detachment shell (1) is provided with a connecting hole (103).

3. The hook-tail pin anti-detachment device according to claim 1, characterized in that: The anti-fall-off mechanism (4) includes a sliding groove (401), a slider (402), a fixing rod (403), a sleeve body (404), a return spring (405), a limiting outer post (406), and a limiting inner post (407). The inner diameter of the sleeve body (404) matches that of the fixing rod (403). The fixing rod (403) is fixedly installed on the side of the slider (402) near the sleeve body (404). The limiting outer post (406) and the limiting outer post (407) are provided with spring bodies.

4. The hook-tail pin anti-detachment device according to claim 3, characterized in that: The limiting outer column (406) is fixedly installed with a limiting block (4061) on the side near the anti-falling shell (1), and there are a total of two limiting blocks (4061). The side of the limiting block (4061) near the anti-falling shell (1) is an inclined structure. There are a total of two anti-falling mechanisms (4), and the anti-falling mechanisms (4) are respectively set at the left and right ends of the top side of the fixed plate (2).

5. The hook-tail pin anti-detachment device according to claim 1, characterized in that: A limiting sleeve (8) is fixedly installed on the top side of the inner side of the anti-fall-off shell (1). The inner side of the limiting sleeve (8) is an inclined structure, and the inclined surface of the limiting sleeve (8) and the contact surface of the limiting block (4061) are relatively smooth.

6. The hook-tail pin anti-detachment device according to claim 1, characterized in that: The inner side of the fixed sleeve (5) is provided with a connecting thread, and a buffer rubber block (502) is fixedly installed on the bottom side of the inner side of the fixed sleeve (5). An inspection window is provided on the front side of the anti-drop shell (1).

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