Disassembling tool special for reviving number brake pad cotter pin

Abstract

The special disassembling tool for the reviving number motor train unit brake pad cotter pin comprises an integrated penetrating guide rod, cotter pin hook iron is arranged at the tail end of the integrated penetrating guide rod, a movable balance weight hammer is arranged on the integrated penetrating guide rod in a sliding mode, and a stop block is arranged between the movable balance weight hammer and the cotter pin hook iron. An anti-skid handle is further arranged at the front end of the integrated penetrating guide rod. The utility model has the following beneficial effects: 1, the operation mode is efficient; and 2, the tool can be applied to various working environments: the tool adopts a double-side stop structure, so that not only can the disassembly of the outer side cotter pin in the normal direction be realized, but also the disassembly of the reverse cotter pin can be realized, the limitation of the working environment is effectively overcome, the working efficiency is improved, and the working safety is ensured.

Description

Technical Field

[0001] This utility model pertains to a disassembly tool, specifically a special disassembly tool applicable to the cotter pin of a Fuxing high-speed train brake pad. Background Technology

[0002] The braking system of a high-speed train is a key control device to ensure the safe operation of high-speed trains, and the brake pads of the high-speed train are a key component of the braking system.

[0003] The basic braking system of the Fuxing bullet train consists of a brake disc, caliper unit, and brake pads. The brake pads are secured to the brake pad support by U-shaped springs. Inserting a cotter pin into the hole in the brake pad stop effectively prevents the stop from accidentally opening, playing a crucial role in preventing the brake pads from falling off.

[0004] During maintenance, it was found that the brake pads of the EMU trains experience significant daily wear. Frequent wear leading to periodic maintenance or abnormal impacts can affect the braking system's performance, necessitating replacement. Replacing the brake pads requires first using needle-nose pliers to remove the cotter pins on the brake pad holder (by bending the tail of the cotter pin), then using a screwdriver to open the U-shaped spring and release the stop, allowing the brake pad to be removed. The cotter pins are inserted into holes in the brake pad holder, surrounded by protrusions and in a confined space. Currently, there are no suitable tools in the tool room for disassembly, posing a significant limitation. Using traditional tools sometimes requires brute force to break the cotter pins, making disassembly extremely difficult and easily damaging other components. Relying solely on traditional tools makes it difficult to complete the disassembly work efficiently and safely. Furthermore, due to the occasional need to replace a large number of brake pads in actual production, the number of cotter pins that need to be removed also increases, posing a significant challenge to the experience and physical fitness of the operators, resulting in longer work times and reduced EMU maintenance efficiency. Utility Model Content

[0005] The technical problem to be solved by this utility model is: how to effectively save disassembly time and avoid dangerous situations such as bumps and collisions during operation, and to provide a special disassembly tool for the cotter pin of the Fuxing high-speed train brake pads.

[0006] To solve the above problems, this utility model is achieved through the following technical solution:

[0007] The special disassembly tool for the cotter pin of the brake pads of the Fuxing bullet train includes an integrated through guide rod, with a cotter pin hook at the end of the integrated through guide rod, a movable counterweight slidingly mounted on the integrated through guide rod, and a stop block between the movable counterweight and the cotter pin hook; a non-slip handle is also provided at the front end of the integrated through guide rod.

[0008] The integrated through-type guide rod and cotter pin hook are a single integrated structure.

[0009] The stop blocks are nuts, and there are two stop blocks, which are welded to both sides of the integrated through guide rod.

[0010] The movable counterweight is located in the middle of the main rod, and the whole is in the shape of a cylindrical ring, with a gap between it and the rod body of the integrated through guide rod.

[0011] The anti-slip handle has a hand guard at the rear.

[0012] The hand guard adopts a countersunk cylindrical structure and uses cushioning rubber material. It is wrapped around the outside of one end stop block and flush with the inside of the stop block, while the other side is located on the anti-slip handle side.

[0013] The anti-slip handle and the integrated through-type guide rod are made of a single steel structure.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Highly efficient operation: Abandoning the traditional disassembly method that requires multiple tools and is time-consuming and labor-intensive, this tool adheres to the concept of "completing multiple operations with one tap", achieving efficient disassembly through precise guidance and force transmission.

[0016] 2. Applicable to various working environments: This tool adopts a double-sided stop structure, which can realize the disassembly of the outer cotter pin in the normal direction as well as the disassembly of the cotter pin in the reverse direction, effectively overcoming the limitations of the working environment, improving work efficiency and ensuring work safety. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the present invention. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] like Figure 1As shown, the special disassembly tool for the cotter pin of the EMU brake pad includes an integrated through guide rod 1, a cotter pin hook 2 at the end of the integrated through guide rod 1, a movable counterweight 3 slidably mounted on the integrated through guide rod 1, and a stop block 4 between the movable counterweight 3 and the cotter pin hook 2; an anti-slip handle 5 is also provided at the front end of the integrated through guide rod 1, and a hand guard 6 is provided at the rear end of the anti-slip handle 5.

[0021] The main body of the tooling is an integrated through-type guide rod 1, which is a through-type load-bearing structure, and other auxiliary structures are fixed through this main body.

[0022] Furthermore, the integrated through-type guide rod 1 and the cotter pin hook 2 are a single-piece structure. During tooling processing, both the integrated through-type guide rod 1 and the cotter pin hook 2 are formed by furnace forging in one piece. The integrated through-type guide rod 1 is made of 45# steel, and the cotter pin hook 2 is made of threaded steel. The two are combined by welding. The cotter pin hook 2 is subjected to a quenching and tempering heat treatment to ensure hardness and reduce brittleness, thus preventing breakage during operation.

[0023] Furthermore, the stop block 4 is a nut, and there are two stop blocks 4. They are welded to both sides of the integrated through guide rod 1. The whole is in the shape of a regular hexagonal prism and is compatible with the movable counterweight 3. It can realize bidirectional disassembly and effectively solve the problem of insufficient working space. The distance between the two stop blocks 4 has been optimized through multiple tests. It not only meets the disassembly requirements but also meets the on-site working environment conditions. The movable counterweight 3 and the two stop blocks 4 are precisely matched, effectively transmitting the force of the operator through layers to realize the disassembly of the brake pad cotter pin and ensure the overall strength and accuracy of the tooling.

[0024] The movable counterweight 3 is located on the outer side of the middle of the main rod, and is shaped like a cylindrical ring. It maintains an appropriate gap with the integral through-type guide rod 1, ensuring smooth movement of the movable counterweight 3 between the two stop blocks 4. Furthermore, the movable counterweight 3 is forged from 45# steel with a 2.5Kg counterweight to ensure strength.

[0025] Furthermore, the hand guard 6 adopts a countersunk cylindrical structure, using cushioning rubber material. It wraps around the outside of one end stop 4, flush with the inside of the stop 4, and the other side is located on the anti-slip handle 5 side. This provides some protection for the operator, preventing parts from falling off and causing injury. It also mitigates the impact on the operator's hand from the movable counterweight structure and the stop. Even better, because the hand guard 6 is made of cushioning rubber and is bonded to the end stop using Seika265, it not only secures the hand guard but also provides a seal, effectively preventing oxidation inside the integrated guide rod.

[0026] Furthermore, the anti-slip handle 5 and the integrated through-type guide rod 1 are a single steel structure, with a length suitable for the gripping posture of a normal adult. The exterior is covered with a rubber sleeve with one open end, providing a degree of anti-slip and cushioning. Through overall optimized design, the overall weight of the tooling is effectively controlled within a suitable range, preventing excessive fatigue for operators during prolonged continuous operation. This allows for the removal of cotter pins while reducing the labor intensity of the workers.

[0027] The working principle and operation process of this utility model are as follows: the working part of the cotter pin hook 2 is the rear end, and the anti-slip handle 5 is the front end.

[0028] During operation, the operator inserts the hook of the cotter pin hook 2 into the round hole of the cotter pin, holds the anti-slip handle 5 with one hand, and holds the movable counterweight 3 with the other. For normal disassembly, the movable counterweight 3 is slid downwards to strike the lower stop block 4. The impact force should be appropriate to avoid affecting the disassembly effect or creating safety hazards due to excessive or insufficient force. Through the sliding impact of the movable counterweight 3, the operator's force is first transferred to the stop block 4. Since the stop block 4 and the integrated through-guide rod 1 are welded together, the force is transferred to the integrated through-guide rod 1, and then to the cotter pin, applying a vertical downward force. This causes the cotter pin to loosen under the impact force, allowing it to be easily removed. Because the tooling uses a single striking operation to complete multiple steps, the operation process is efficient and fast, effectively improving the speed of cotter pin disassembly and brake pad replacement, reducing damage to other components, lowering the operator's labor intensity, and ensuring operator safety to a certain extent. Furthermore, the operation is simple and easy to learn, reducing reliance on operator experience and requiring relatively low professional skills.

[0029] The beneficial effects of this utility model are as follows:

[0030] 1. Highly efficient operation: Abandoning the traditional disassembly method that requires multiple tools and is time-consuming and labor-intensive, this tool adheres to the concept of "completing multiple operations with one tap", achieving efficient disassembly through precise guidance and force transmission.

[0031] 2. Applicable to various working environments: This tool adopts a double-sided stop structure, which can realize the disassembly of the outer cotter pin in the normal direction and the disassembly of the cotter pin in the reverse direction, effectively overcoming the limitations of the working environment.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A special dismounting tool for the opening pin of the Fuxinggao brake pad, characterized in that: The utility model relates to a kind of portable type through guide rod, including integral through guide rod (1), open pin hook iron (2) is provided with in the end of integral through guide rod (1), mobile counterweight (3) is slidably arranged on integral through guide rod (1), stop block (4) is arranged between mobile counterweight (3) and open pin hook iron (2);Anti-skid handle (5) is further provided at the front end of integral through guide rod (1).

2. The special dismounting tool for the Fuxinggong opening pin of claim 1, wherein: Integral through guide rod (1) and open pin hook iron (2) are integral structure.

3. The special dismounting tool for the Fuxinggong opening pin of the brake shoe according to claim 1, characterized in that: Stop block (4) is nut, the number of stop block (4) is two, and it is located on the both sides of integral through guide rod (1) using welding.

4. The special dismounting tool for the Fuxinggong opening pin of the Fuxinggong brake shoe according to claim 1, characterized in that: Mobile counterweight (3) is located in the middle outside of main body rod, and it is annular cylinder as a whole, and gap is left between the rod body of integral through guide rod (1).

5. The special dismounting tool for the Fuxinggong opening pin of the Fuxinggong brake shoe according to claim 1, characterized in that: The rear end of anti-skid handle (5) is provided with hand guard (6).

6. The special dismounting tool for the Fuxinggong opening pin of the Fuxinggong brake shoe, according to claim 5, characterized in that: Hand guard (6) adopts counterbore cylindrical structure, uses buffer rubber material, is wrapped in the outside of one end stop block (4) and is flush with the inside of stop block (4), and the other side is located in the side of anti-skid handle (5).

7. The special dismounting tool for the Fuxinggong opening pin of the Fuxinggong brake shoe according to claim 1, characterized in that: Anti-skid handle (5) and the rod part of integral through guide rod (1) are integral steel structure.

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