A metro traction elastic cylindrical pin dismounting tool

Abstract

The utility model discloses a metro traction elastic cylindrical pin dismounting tool belongs to metro vehicle dismounting maintenance technical field. When dismounting elastic cylindrical pin, need many people to lift the car body, and the operator strikes with a hammer in the narrow space, and it is difficult and dangerous. The tool includes the press -fitting seat, and the press -fitting seat one side two ends are equipped with the recess I and the recess II respectively, the connecting block is located in the recess II and along the press -fitting seat length direction sliding, the driving part is installed in the recess II connecting block far from the recess I one side, and there is through -hole between recess I and II, and the one end of the propelling rod is installed in the connecting block surface and passes through the through -hole and extends to the recess I in. When using, the end of the traction rod is embedded in the recess I, and the propelling rod is aligned with the mounting hole by sliding the dismounting handle, and the driving part promotes the connecting block and drives the propelling rod to press out the elastic cylindrical pin. The tool adapts to the narrow space, need not to lift the car body, and the dismounting difficulty and operation intensity are reduced, and are used for the dismounting of elastic cylindrical pin when metro vehicle frame overhaul.

Description

Technical Field

[0001] This utility model relates to the field of subway vehicle disassembly and maintenance technology, and in particular to a disassembly tool for subway traction elastic cylindrical pins. Background Technology

[0002] As a crucial component of the metro traction system, the traction rod is a vital part that connects the bogie to the car body and propels the vehicle. In the running metro, the traction force of the bogie is directly applied to the car body through the traction rod. The traction rod is connected to the traction seat through a combination of elastic cylindrical pins and bolts. With the increase in the number of trains in operation and the mileage, it is necessary to carry out major frame overhauls on metro vehicles to ensure the safe operation of the trains.

[0003] When carrying out major overhauls on subway cars, it is necessary to separate and disassemble the bogies from the car body. However, because there are elastic cylindrical pins embedded in the mounting holes at the connection between the traction rod and the traction seat, the elastic cylindrical pins must be removed to separate the bogies from the car body. Since the drive motor on the bogie occupies the disassembly space, the disassembly can only be done with a hammer and an impact rod. Four people are needed to operate the lifting machine to lift the entire subway car body. One worker climbs into the narrow space between the subway car body and the bogie from the side and uses a hammer to strike the impact rod to remove the elastic cylindrical pin of the traction rod. The swing of the hammer in the narrow space is extremely short, and it is necessary to strike the impact rod multiple times to remove the elastic cylindrical pin. The disassembly is very difficult and dangerous. Utility Model Content

[0004] The purpose of this utility model is to solve the shortcomings of the existing technology, such as limited disassembly space, difficulty and danger, and to propose a disassembly tool for the elastic cylindrical pin of subway traction.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A disassembly tool for a subway traction elastic cylindrical pin includes a pressing seat, wherein groove I and groove II are respectively provided at both ends of one side of the pressing seat; The connecting block is located inside the groove II and slides along the length of the press-fit seat. A driving element for moving the connecting block, the driving element being installed inside the groove II and located on the side of the connecting block away from the groove I; A push rod is provided, with a through hole connecting the groove I and the groove II. One end of the push rod is mounted on the surface of the connecting block and extends into the interior of the groove I through the through hole. When the end of the traction rod is inserted into the groove I, the drive component pushes the connecting block to move the push rod, which can press the elastic cylindrical pin out of the traction rod, realizing the disassembly operation in a narrow space.

[0006] In one possible design, the drive component is a hydraulic cylinder.

[0007] In one possible design, the press-fit seat is made of 10mm hard aluminum alloy sheet, the width of the groove I is greater than the width of the traction rod, which is 62-64mm, and the length is 300-340mm.

[0008] In one possible design, the push rod is a discarded M16X70 bolt from a dismantled subway vehicle, and the push rod is threadedly connected to the connecting block.

[0009] In one possible design, a retraction handle is also included. The side wall of the press-fit seat has a sliding hole that communicates with the groove II. One end of the retraction handle is threaded to the connecting block, and the other end extends to the outside through the sliding hole. Manually sliding the retraction handle can drive the connecting block to be pre-positioned, so that the push rod can be aligned with the elastic cylindrical pin mounting hole.

[0010] In one possible design, the unloading handle is 170mm long and 8mm in diameter.

[0011] In this application, during actual use, the end of the traction rod is embedded into the groove I of this tooling. Then, the unloading handle is manually slid to make the connecting block slide. The connecting block will push the push rod into the mounting hole. Then, the hydraulic cylinder can be activated to push the connecting block to move. The connecting block will drive the push rod forward 40mm, thereby pressing the elastic cylindrical pin out from one side of the traction rod, so that the traction rod is separated from the traction seat.

[0012] In this utility model, a subway traction elastic cylindrical pin disassembly fixture is described. The end of the traction rod is vertically placed into the pressing seat. In a narrow space, the push rod is inserted into the elastic cylindrical pin mounting hole from the lower end of the pressing seat using the unloading handle. The elastic cylindrical pin is pressed out from one side of the traction rod by the action of the hydraulic cylinder on the push rod, so that the traction rod is separated from the traction seat. In this utility model, the subway traction elastic cylindrical pin disassembly tooling uses M16X70 scrap bolts disassembled from subway vehicles as the push rod, so that it can meet the tooling's requirements for the strength and size of the push rod, thereby reducing the tooling's manufacturing cost while ensuring the tooling works normally. In this utility model, the tooling is suitable for short-distance unloading of elastic cylindrical pins in confined spaces. The use of hydraulic cylinders reduces the difficulty of unloading and the intensity of personnel work. It can achieve the unloading and separation of elastic cylindrical pins without using a car lifting machine to lift the subway car body. It can be operated from the bottom of the bogie through the gap between the bottom and top of the bogie by passing through the trench. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of a subway traction elastic cylindrical pin disassembly tool proposed in this utility model; Figure 2This is a schematic diagram of the back structure of a subway traction elastic cylindrical pin disassembly tool proposed in this utility model. Figure 3 This is a three-dimensional structural diagram of a subway traction elastic cylindrical pin disassembly tooling bolt component proposed in this utility model; Figure 4 This is a schematic diagram of the planar structure of a disassembly tool for a subway traction elastic cylindrical pin proposed in this utility model.

[0014] In the diagram: 1. Press-fit seat; 2. Groove I; 3. Push rod; 4. Through hole; 5. Groove II; 6. Connecting block; 7. Hydraulic cylinder; 8. Sliding hole; 9. Unloading handle. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] In one embodiment: a disassembly fixture includes: a pressing base 1, a connecting block 6, a driving component, a push rod 3, etc.

[0017] refer to Figure 1-2 The pressing seat 1 is the basic support component of the tooling, with groove I2 and groove II5 respectively opened at both ends on one side. The pressing seat 1 is made of 10mm hard aluminum alloy plate. The width of groove I2 is 62-64mm, which is larger than the width of the traction rod, so as to ensure that the end of the traction rod is embedded therein. Its length is 300-340mm, which can fully accommodate the end of the traction rod.

[0018] A connecting block 6 is provided in the groove II5. The connecting block 6 is slidably arranged along the length direction of the press seat 1. The driving component is a hydraulic cylinder 7, which is installed in the groove II5 and located on the side of the connecting block 6 away from the groove I2. The hydraulic cylinder 7 is the power source to provide thrust, which pushes the connecting block 6 to slide in the groove II5, thereby driving the push rod 3 to realize the disassembly operation of the elastic cylindrical pin. A through hole 4 is opened between the groove I2 and the groove II5. One end of the push rod 3 is installed on the surface of the connecting block 6 and extends into the interior of the groove I2 through the through hole 4.

[0019] To facilitate operation of the tooling, a retraction handle 9 is provided. The side wall of the pressing seat 1 has a sliding hole 8 that communicates with the groove II 5. The retraction handle 9 is 170mm long and 8mm in diameter. This size facilitates the operator's application of force and ensures that the device can enter the vehicle's internal structure. One end of the retraction handle 9 is threaded to the connecting block 6, and the other end extends to the outside through the sliding hole 8. The operator can manually slide the retraction handle 9 to move the connecting block 6 within the groove II 5, thereby pre-positioning the push rod 3. Before disassembling the elastic cylindrical pin, the push rod 3 can be moved to the mounting hole position of the elastic cylindrical pin by manually operating the retraction handle 9.

[0020] When using this tool to disassemble the elastic cylindrical pin of the subway traction system, first insert the end of the traction rod into the groove I2, then manually slide the unloading handle 9 to make the connecting block 6 slide in the groove II5. The sliding of the connecting block 6 will cause the push rod 3 to move synchronously, aligning it with the elastic cylindrical pin mounting hole of the traction rod. Then, start the hydraulic cylinder 7, which applies a thrust to the connecting block 6, pushing the connecting block 6 to move further in the groove II5. Under the push of the hydraulic cylinder 7, the connecting block 6 drives the push rod 3 to advance 40mm towards the groove I2, so that the elastic cylindrical pin is pressed out from one side of the traction rod, thereby separating the traction rod from the traction seat and completing the disassembly of the elastic cylindrical pin.

[0021] This application can be used in the field of subway vehicle disassembly and repair, or in other fields applicable to this application.

[0022] In another embodiment: Reference Figure 3-4 A disassembly tool for a subway traction elastic cylindrical pin is applied to the field of subway vehicle disassembly and maintenance. The structure of this embodiment is basically the same as that of the previous embodiment. The difference is that the push rod 3 uses M16*70 scrap bolts from the disassembly of subway vehicles. These scrap bolts are widely available and inexpensive, and can meet the strength and size requirements of the tool for the push rod 3.

[0023] Meanwhile, the push rod 3 and the connecting block 6 are connected by threads, which facilitates quick assembly and replacement.

[0024] However, as is well known to those skilled in the art, the working principle and wiring method of the hydraulic cylinder 7 are conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0025] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tooling for disassembling a subway traction elastic cylindrical pin, characterized in that, include: The press-fitting base (1) has grooves I (2) and groove II (5) respectively opened at both ends of one side; The connecting block (6) is located inside the groove II (5) and slides along the length of the press-fit seat (1); A drive element for pushing the connecting block (6) to move, the drive element being installed inside the groove II (5) and located on the side of the connecting block (6) away from the groove I (2); The push rod (3) has a through hole (4) between the groove I (2) and the groove II (5). One end of the push rod (3) is installed on the surface of the connecting block (6) and extends into the interior of the groove I (2) through the through hole (4). When the end of the traction rod is inserted into the groove I (2), the driving component pushes the connecting block (6) to move the push rod (3), which can press the elastic cylindrical pin out of the traction rod and realize the disassembly operation in a narrow space.

2. The disassembly fixture for a subway traction elastic cylindrical pin according to claim 1, characterized in that, The driving component is a hydraulic cylinder (7).

3. The disassembly fixture for a subway traction elastic cylindrical pin according to claim 2, characterized in that, The press-fit seat (1) is made of hard aluminum alloy plate. The width of the groove I (2) is greater than the width of the traction rod, which is 62-64mm; the length is 300-340mm.

4. The disassembly fixture for a subway traction elastic cylindrical pin according to claim 3, characterized in that, The push rod (3) is a bolt, and the push rod (3) is connected to the connecting block (6) by a thread.

5. A disassembly fixture for a subway traction elastic cylindrical pin according to claim 4, characterized in that, The tooling also includes a retraction handle (9). The side wall of the pressing seat (1) is provided with a sliding hole (8) that communicates with the groove II (5). One end of the retraction handle (9) is threadedly connected to the connecting block (6), and the other end extends to the outside through the sliding hole (8). Manually sliding the retraction handle (9) can drive the connecting block (6) to be pre-positioned, so that the push rod (3) can be aligned with the elastic cylindrical pin mounting hole.

6. The disassembly fixture for a subway traction elastic cylindrical pin according to claim 5, characterized in that, The length of the unloading handle (9) is 150-250mm.

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