Rivet and pin assembly for train door

Abstract

The utility model relates to the technical field of train door connecting assemblies, in particular to a train door rivet pin assembly. According to the technical scheme, the train door comprises a train door body, a train door and a pair of willow pins arranged on the train door, each willow pin comprises a first clamping head and a second clamping head, a sleeve bolt is fixedly connected to the first clamping head, and an insertion bolt movably connected with the sleeve bolt in an inserted mode is fixedly connected to the second clamping head; the self-locking mechanism is arranged at one end of the plug and used for clamping the plug to prevent the plug from being separated from the sleeve bolt; and a switching mechanism. According to the utility model, the sleeve bolt, the plug bolt, the self-locking mechanism, the switch mechanism and other structures are matched, so that the rivet pin assembly can be quickly disassembled and assembled on the train door, and when a fault occurs or a part needs to be replaced, a maintainer can quickly disassemble and replace the damaged part; and a large amount of time and energy do not need to be spent for complex disassembly or destructive maintenance, and the maintenance efficiency of the train door can be improved through the design.

Description

Technical Field

[0001] The utility model relates to the technical field of train door connection components, in particular to a train door rivet pin component. Background Art

[0002] Rivet pins on train doors, also known as willow pins, are a special type of fastener that combines the features of both rivets and pins. They are commonly used to connect and secure two or more components, particularly where strong connection strength and long-term stability are required. Rivet pins are typically made of metal and offer the permanent fixation of rivets with the removable nature of pins. Existing willow pins are typically designed for a one-time, permanent connection, making them difficult to remove after installation, which increases the complexity of installation and maintenance. Utility Model Content

[0003] The purpose of the utility model is to propose a train door rivet pin assembly to address the problem in the prior art that the willow pins are usually designed for a one-time permanent connection and are therefore usually difficult to disassemble after installation, thereby increasing the difficulty of installation and maintenance.

[0004] The technical solution of the utility model is as follows: a train door rivet pin assembly includes a train door body and a train door and a pair of willow pins arranged on the train door, and also includes: the willow pin includes a first clamping head and a second clamping head, the first clamping head is fixedly connected to a sleeve bolt, and the second clamping head is fixedly connected to a plug movably connected to the sleeve bolt; a self-locking mechanism is arranged at one end of the plug to clamp the plug to prevent it from falling out of the sleeve bolt; a switch mechanism is installed on the first clamping head and opens the self-locking mechanism after being rotated.

[0005] Optionally, the self-locking mechanism includes a movable groove opened at the end of the bolt away from the second clamping head, a pair of telescopic grooves are opened inside the movable groove, telescopic blocks are slidably connected inside the telescopic grooves, a return spring is provided in the middle of the telescopic block, and a pair of card slots for inserting the telescopic blocks are opened inside the sleeve bolt.

[0006] Optionally, the telescopic block is provided with an arc-shaped abutment head at one end away from the return spring, which abuts against the inner wall of the sleeve bolt and rotates to retract into the telescopic groove.

[0007] Optionally, the switching mechanism includes a rotating groove opened on the first clamp, the internal rotating groove is connected to a hexagon socket bolt, the outer wall of one end of the telescopic block close to the reset spring is fixedly connected to a connecting plate, and the middle part of the connecting plate is fixedly connected to a pull rope that movably passes through the end of the hexagon socket bolt.

[0008] Optionally, a pair of limiting sliding grooves are provided inside the sleeve bolt, and a pair of limiting clips that are engaged with the limiting sliding grooves are fixedly connected to the outer wall of the plug.

[0009] Optionally, the train door body is provided with an entrance and exit for the train door to be stuck.

[0010] Optionally, the telescopic block, arc-shaped abutment, pull rope and connecting plate are symmetrically arranged with the reset spring as the center.

[0011] In summary, this application includes at least one of the following beneficial technical effects:

[0012] The utility model utilizes the coordination of structures such as a sleeve bolt, a plug bolt, a self-locking mechanism and a switch mechanism to enable the rivet pin assembly to be quickly disassembled and assembled on the train door. When a failure occurs or a part needs to be replaced, maintenance personnel can quickly disassemble and replace the damaged part without spending a lot of time and energy on complicated disassembly or destructive repairs. This design can improve the maintenance efficiency of the train door. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A structural schematic diagram of a train door rivet pin assembly according to the present invention is given;

[0014] Figure 2 for Figure 1 Schematic diagram of the structure of the Zhongliu pin;

[0015] Figure 3 for Figure 2 A schematic diagram of the structure of the second clamping head;

[0016] Figure 4 for Figure 3 Schematic diagram of the cross-section structure;

[0017] Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure of the first clamp.

[0018] Figure numerals: 1. Train door body; 2. Train door; 3. Willow pin; 31. First clamp; 311. Sleeve bolt; 312. Hexagon socket bolt; 313. Rotating groove; 314. Clamping slot; 315. Limiting slide groove; 32. Second clamp; 321. Plug; 322. Movable groove; 323. Telescopic slot; 324. Telescopic block; 325. Connecting plate; 326. Pull rope; 327. Limiting clamping strip; 328. Arc-shaped abutment; 329. Return spring. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention.

[0021] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, article, or apparatus. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0025] Example

[0026] like Figures 1 to 5As shown, the present invention provides a train door rivet pin assembly, comprising a train door body 1, a train door 2, and a pair of willow pins 3 mounted on the train door 2. The train door body 1 defines an inlet and outlet for locking the train door 2. The willow pins 3 also include a first clamping head 31 and a second clamping head 32. The first clamping head 31 is fixedly connected to a sleeve bolt 311. The sleeve bolt 311 defines a pair of limiting grooves 315. The outer wall of the plug 321 is fixedly connected to a pair of limiting clips 327 that engage the limiting grooves 315. The limiting clips 327 slide within the limiting grooves 315 to ensure that the slot 314 and the expansion slot 323 are aligned. The second clamping head 32 is fixedly connected to a plug 321 that is movably engaged with the sleeve bolt 311. A self-locking mechanism is provided at one end of the plug 321 to lock the plug 321 and prevent it from falling out of the sleeve bolt 311. A switch mechanism is mounted on the first clamping head 31 and is activated by rotation. The rapid assembly and disassembly design of the train door rivet pin assembly makes it easier to remove and replace damaged or worn components during maintenance, eliminating the need to completely disassemble the door or replace the entire component for each repair. This not only saves material and labor costs, but also avoids the high repair costs that would otherwise be incurred due to the inability to disassemble the door.

[0027] Furthermore, the self-locking mechanism includes a movable slot 322 defined at the end of the plug 321 away from the second clamping head 32. A pair of telescopic slots 323 are defined within the movable slot 322. Each telescopic slot 323 is slidably connected to a telescopic block 324. Each telescopic block 324, on its end away from the return spring 329, is provided with an arcuate abutment 328 that abuts against the inner wall of the sleeve bolt 311 and rotates back into the telescopic slot 323. The arcuate abutment 328 automatically retracts the telescopic block 324 into the telescopic slot 323, preventing the protruding telescopic block 324 from interfering with the insertion of the plug 321 into the telescopic slot 323. A return spring 329 is provided in the middle of the telescopic block 324. This spring ensures that once the telescopic slot 323 and the clamping slot 314 overlap, the telescopic block 324 automatically snaps into the clamping slot 314, completing the connection and securing. A pair of slots 314 are provided inside the sleeve bolt 311 for inserting the telescopic block 324 . The telescopic block 324 , the arc-shaped abutment 328 , the pull rope 326 and the connecting plate 325 are symmetrically arranged with the return spring 329 as the center.

[0028] Furthermore, the switch mechanism includes a rotation slot 313 defined in the first clamp 31. A hexagon socket head cap screw 312 is rotatably connected to the interior of the rotation slot 313. The hexagon socket head cap screw 312 is rotated using a hexagonal screwdriver. A connecting plate 325 is fixedly connected to the outer wall of the telescopic block 324 near the return spring 329. A pull cord 326, which flexibly extends through the end of the hexagon socket head cap screw 312, is fixedly connected to the middle of the connecting plate 325. The pull cord 326 is made of durable, wear-resistant steel wire.

[0029] In this embodiment, when it is necessary to use the train door rivet pin assembly, Figure 1 As shown, when removing the willow pin 3 from the train door body 1, one only needs to use a tool to insert the hexagon socket bolt 312 into the rotating slot 313. As the hexagon socket bolt 312 rotates, its end in the movable slot 322 drives the pull cord 326 to wind around. This causes both ends of the pull cord 326 to move the corresponding connecting plate 325, which in turn drives the corresponding telescopic block 324 back into the telescopic slot 323, allowing the curved abutment 328 at the end of the telescopic block 324 to disengage from the retaining slot 314 in the sleeve bolt 311. Finally, the plug 321 can be removed from the sleeve bolt 311, completing the removal between the first and second clamps 31 and 32. To install the plug 321 in the sleeve bolt 311, simply insert the end of the plug 321 away from the second clamp 32 into the sleeve bolt 311. Then, the pair of telescopic blocks 324 will first abut against the inner wall of the sleeve bolt 311, and the arc-shaped abutment 328 will cause the telescopic blocks 324 to retract into the corresponding telescopic slots 323. Finally, until the end of the plug 321 away from the second clamping head 32 abuts against the inner wall of the sleeve bolt 311, the pair of telescopic blocks 324 will be pushed out along the corresponding telescopic slots 323 by the elastic thrust of the return spring 329, and then the end of the telescopic block 324 with the arc-shaped abutment 328 will be locked into the corresponding clamping slot 314, thus completing the connection and fixation between the first clamping head 31 and the second clamping head 32.

[0030] The preferred embodiments of the present invention described above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A train door rivet pin assembly, comprising a train door body (1), a train door (2), and a pair of willow pins (3) arranged on the train door (2), characterized in that: Also includes: The willow pin (3) comprises a first clamp (31) and a second clamp (32); the first clamp (31) is fixedly connected to a sleeve bolt (311); the second clamp (32) is fixedly connected to a plug (321) movably plugged into the sleeve bolt (311); A self-locking mechanism is provided at one end of the plug (321) to clamp the plug (321) and prevent it from falling out of the sleeve plug (311); The switch mechanism is mounted on the first clamping head (31) and opens the self-locking mechanism by rotating.

2. A train door rivet pin assembly according to claim 1, characterized in that: The self-locking mechanism comprises a movable groove (322) provided at one end of the plug (321) away from the second clamping head (32), a pair of telescopic grooves (323) provided inside the movable groove (322), a telescopic block (324) slidably connected inside each of the telescopic grooves (323), a return spring (329) provided in the middle of the telescopic block (324), and a pair of card slots (314) provided inside the sleeve bolt (311) for inserting the telescopic block (324).

3. A train door rivet pin assembly according to claim 2, characterized in that: The telescopic block (324) is provided with an arc-shaped abutting head (328) at one end away from the return spring (329) for abutting against the inner wall of the sleeve bolt (311) and rotating to retract into the telescopic groove (323).

4. A train door rivet pin assembly according to claim 2, characterized in that: The switch mechanism includes a rotation groove (313) provided on the first clamp (31), the interior of the rotation groove (313) is rotatably connected to a hexagon socket bolt (312), the outer wall of one end of the telescopic block (324) close to the reset spring (329) is fixedly connected to a connecting plate (325), and the middle part of the connecting plate (325) is fixedly connected to a pull rope (326) that movably passes through the end of the hexagon socket bolt (312).

5. The train door rivet pin assembly according to claim 1, characterized in that: A pair of limiting sliding grooves (315) are provided inside the sleeve bolt (311), and a pair of limiting clamping strips (327) that are clamped into the limiting sliding grooves (315) are fixedly connected to the outer wall of the plug (321).

6. The train door rivet pin assembly according to claim 1, characterized in that: The train door body (1) is provided with an inlet and outlet for the train door (2) to be clamped.

7. The train door rivet pin assembly according to claim 4, characterized in that: The telescopic block (324), the arc-shaped abutment head (328), the pull rope (326) and the connecting plate (325) are symmetrically arranged with the return spring (329) as the center.

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