Heavy-duty axle wheel-side brake shoe return spring dismounting tool

Abstract

The utility model discloses a heavy vehicle axle wheel edge brake shoe return spring dismounting tool belongs to spring dismounting equipment technical field, this heavy vehicle axle wheel edge brake shoe return spring dismounting tool, include: spring pincers hold subassembly, spring pincers hold subassembly includes movable pincer claw and support pincer claw, movable pincer claw is connected with support pincer claw rotation, and the bottom fixed connection of movable pincer claw has fixed semicircle groove board, and installation box is fixedly connected in the top of movable pincer claw, this heavy vehicle axle wheel edge brake shoe return spring dismounting tool, it is aligned with the hole position of fixed pin, then slow release movable pincer claw, send spring hook head into pinhole to complete installation, in the installation and dismounting process of return spring, return spring one end is always locked by fixed semicircle groove board and movable semicircle groove board, thereby effectively prevent return spring from slipping because of tension, have very high security, and simple operation has no learning cost.

Description

Technical Field

[0001] This utility model relates to the field of spring disassembly and assembly equipment, and more specifically, to a tool for disassembling and assembling the return spring of the wheel-side brake shoe of a heavy-duty vehicle axle. Background Technology

[0002] Heavy-duty vehicle axles commonly use drum braking systems. In this system, the brake shoe return spring is a key component to ensure braking performance and safety. Its function is to quickly pull the brake shoe away from the brake drum after the braking action is completed, relying on its strong elastic restoring force, thereby completely releasing the brake and preventing abnormal wear, dragging, or even overheating failure of the braking system.

[0003] Return springs in heavy-duty vehicle axles are generally handled using specialized brake spring removal and installation pliers. Maintenance personnel must use the pliers' claws to directly hook onto the spring wire and utilize leverage to overcome the tension in order to remove it from the retaining pin or install it. Traditional spring pliers have claws that directly hook onto the spring wire; under immense tension, if the claws are worn or poorly positioned, they can easily slip off the smooth spring wire, causing the spring to fly off like a bullet, thus posing a safety risk. Summary of the Invention

[0004] 1. Technical problems to be solved To address the problems existing in the prior art, the purpose of this utility model is to provide a tool for disassembling and assembling the return spring of the wheel-side brake shoe of a heavy-duty vehicle axle. During the installation and disassembly of the return spring, one end of the return spring is always locked by the fixed semi-circular groove plate and the movable semi-circular groove plate, thereby effectively preventing the return spring from slipping due to tension. It has extremely high safety and is simple to operate with no learning cost.

[0005] 2. Technical Solution To solve the above problems, the present invention adopts the following technical solution: A tool for removing and installing return springs on wheel-side brake shoes of heavy-duty vehicle axles, comprising: A spring clamping assembly includes a movable jaw and a supporting jaw, the movable jaw and the supporting jaw being rotatably connected, and a fixed semi-circular groove plate being fixedly connected to the bottom of the movable jaw; and a mounting box, the mounting box being fixedly connected to the top of the movable jaw, a transmission threaded rod being rotatably connected between the inner walls of the two sides of the mounting box, and two transmission rods slidingly passing through one inner wall of the mounting box, one end of the two transmission rods being fixedly connected to the movable semi-circular groove plate, and the other end of the two transmission rods being fixedly connected to a transmission plate, the transmission plate being threadedly connected to the transmission threaded rod.

[0006] As a preferred embodiment of this utility model, a driven bevel gear is rotatably connected to one outer surface of the partition, and a driving bevel gear is rotatably connected between the upper and lower inner walls of the mounting box, wherein the driving bevel gear and the driven bevel gear are meshed together.

[0007] As a preferred embodiment of this utility model, the top of the mounting box is rotatably connected to an external threaded screw block, which is fixedly connected to the driving bevel gear.

[0008] In a preferred embodiment of this utility model, two limiting rods are fixedly connected between the mounting box and the partition, and the transmission plate is slidably sleeved on the two limiting rods.

[0009] As a preferred embodiment of this utility model, both limiting rods are made of stainless steel.

[0010] As a preferred embodiment of this utility model, one end of the supporting jaws is fixedly connected to an internally threaded connecting block, the internal thread of the internally threaded connecting block is connected to a connecting threaded rod, and one end of the connecting threaded rod is fixedly connected to a rubber pad.

[0011] 3. Beneficial effects Compared with the prior art, this utility model provides a tool for disassembling and assembling the return spring of the wheel-side brake shoe of a heavy-duty vehicle axle, which has the following advantages: This heavy-duty vehicle axle wheel-side brake shoe return spring removal and installation tool involves placing the fixed semi-circular groove plate and the movable semi-circular groove plate on both sides of the hook of the brake shoe return spring. By rotating the external threaded block, the driving bevel gear rotates, causing the driven bevel gear to drive the transmission threaded rod to rotate rapidly, moving the transmission plate. This causes the two transmission rods to move the movable semi-circular groove plate until it is in contact with the fixed semi-circular groove plate. One end of the return spring hook is located in the circular hole formed by the fixed and movable semi-circular groove plates. At this time, the support jaws press against the brake shoe or base plate as a fulcrum and remain stationary. Firmly grip the movable jaws and support jaws. The clamps, using the lever principle, stretch the return spring by fixing the semicircular groove plate and the movable semicircular groove plate, causing it to disengage from the fixing pin, thus completing the disassembly. Conversely, by using the fixing and movable semicircular groove plates to stretch the return spring and align it with the hole of the fixing pin, the movable clamps are slowly released, sending the spring hook into the pin hole, thus completing the installation. During the installation and disassembly of the return spring, one end of the return spring is always locked by the fixing and movable semicircular groove plates, effectively preventing the return spring from slipping due to tension. It has extremely high safety and is simple to operate with no learning curve. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present invention; Figure 2 This is a three-dimensional view of a portion of the structure at one end of the movable jaws of this utility model. Figure 3 This is a cross-sectional view of the mounting box of this utility model; Figure 4 This is an exploded view of a portion of the structure at one end of the support claw of this utility model.

[0013] Explanation of the labels in the diagram: 1. Spring clamping assembly; 101. Movable clamping jaw; 102. Supporting clamping jaw; 2. Internal threaded connecting block; 3. Fixed semi-circular groove plate; 4. Mounting box; 5. Transmission rod; 6. Movable semi-circular groove plate; 7. External threaded block; 8. Partition plate; 9. Transmission threaded rod; 10. Transmission plate; 11. Limiting rod; 12. Driven bevel gear; 13. Driving bevel gear; 14. Rubber pad; 15. Connecting threaded rod. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. Example

[0015] Please see Figures 1-4 A tool for removing and installing return springs on wheel-side brake shoes of heavy-duty vehicle axles, comprising: The spring clamping assembly 1 includes a movable jaw 101 and a supporting jaw 102, which are rotatably connected. A fixed semi-circular groove plate 3 is fixedly connected to the bottom of the movable jaw 101. The assembly also includes a mounting box 4, which is fixedly connected to the top of the movable jaw 101. A transmission threaded rod 9 is rotatably connected between the inner walls of the two sides of the mounting box 4. Two transmission rods 5 slide through one inner wall of the mounting box 4. A movable semi-circular groove plate 6 is fixedly connected to one end of the two transmission rods 5, and a transmission plate 10 is fixedly connected to the other end of the two transmission rods 5. The transmission plate 10 is threadedly connected to the transmission threaded rod 9.

[0016] In a specific embodiment of this utility model, the fixed semicircular groove plate 3 and the movable semicircular groove plate 6 are placed on both sides of the hook of the brake shoe return spring. By controlling the rotation of the transmission threaded rod 9, the transmission plate 10 is moved, so that the two transmission rods 5 drive the movable semicircular groove plate 6 to move and fit against the fixed semicircular groove plate 3. One end of the return spring hook is located in the circular hole formed by the fixed semicircular groove plate 3 and the movable semicircular groove plate 6. At this time, the support jaw 102 abuts against the brake shoe or the base plate as a fulcrum and remains stationary. By forcefully gripping the movable jaw 101 and the support jaw 102, the brake shoe is fixed by lever principle. The fixed semicircular groove plate 3 and the movable semicircular groove plate 6 stretch the return spring and disengage it from the fixing pin, thus completing the disassembly. Conversely, the fixed semicircular groove plate 3 and the movable semicircular groove plate 6 stretch the return spring, align it with the hole of the fixing pin, and then slowly release the movable jaw 101 to insert the spring hook into the pin hole, thus completing the installation. During the installation and disassembly of the return spring, one end of the return spring is always locked by the fixed semicircular groove plate 3 and the movable semicircular groove plate 6, which effectively prevents the return spring from slipping due to tension, providing extremely high safety. Moreover, the operation is simple and requires no learning cost.

[0017] Specifically, a driven bevel gear 12 is rotatably connected to one outer surface of the partition 8, and a driving bevel gear 13 is rotatably connected between the upper and lower inner walls of the mounting box 4. The driving bevel gear 13 meshes with the driven bevel gear 12.

[0018] In this embodiment, by rotating the driving bevel gear 13, the driven bevel gear 12 is driven to rotate, thereby driving the transmission threaded rod 9 to rotate. When the driving bevel gear 13 drives the driven bevel gear 12 to rotate, the driven bevel gear 12 rotates faster because the number of teeth and size of the driving bevel gear 13 are larger than those of the driven bevel gear 12. This allows the driven bevel gear 12 to move faster, thus saving effort and quickly moving the movable semi-circular groove plate 6.

[0019] Specifically, the top of the mounting box 4 is rotatably connected to an external threaded screw block 7, which is fixedly connected to the driving bevel gear 13.

[0020] In this embodiment, the external threaded screw block 7 facilitates the operator's rotation of the drive bevel gear 13.

[0021] Specifically, there are two limiting rods 11 fixedly connected between the mounting box 4 and the partition 8, and the transmission plate 10 is slidably sleeved on the two limiting rods 11.

[0022] In this embodiment, the two limiting rods 11 keep the transmission plate 10 stable during movement.

[0023] Specifically, both limit rods 11 are made of stainless steel.

[0024] In this embodiment, the surface of the limiting rod 11 is smooth, and the friction between it and the transmission plate 10 is small.

[0025] Specifically, one end of the supporting jaw 102 is fixedly connected to an internally threaded connecting block 2, the internal thread of the internally threaded connecting block 2 is connected to a connecting threaded rod 15, and one end of the connecting threaded rod 15 is fixedly connected to a rubber pad 14.

[0026] In this embodiment, the rubber pad 14 is made of a square plate and a rubber pad bonded together. The connecting threaded rod 15 and the rubber pad 14 are prefabricated parts. When the supporting claw 102 abuts against the brake shoe or the base plate through the rubber pad 14 as a fulcrum, it can minimize the wear on the brake shoe and other equipment, while the friction is greater and the fulcrum is more stable.

[0027] Working principle: The fixed semicircular groove plate 3 and the movable semicircular groove plate 6 are placed on both sides of the hook of the brake shoe return spring. By rotating the external threaded block 7, the driving bevel gear 13 is rotated, which causes the driven bevel gear 12 to drive the transmission threaded rod 9 to rotate rapidly, which drives the transmission plate 10 to move. This causes the two transmission rods 5 to move the movable semicircular groove plate 6 to fit against the fixed semicircular groove plate 3. One end of the return spring hook is located in the circular hole formed by the fixed semicircular groove plate 3 and the movable semicircular groove plate 6. At this time, the supporting jaw 102 abuts against the brake shoe or the base plate as a fulcrum and remains stationary. By forcefully gripping the movable jaw 101 and the supporting jaw, 102. By leveraging the principle, the fixed semicircular groove plate 3 and the movable semicircular groove plate 6 stretch the return spring and disengage it from the fixing pin, thus completing the disassembly. Conversely, by stretching the return spring with the fixed semicircular groove plate 3 and the movable semicircular groove plate 6 and aligning it with the hole of the fixing pin, the movable jaw 101 is slowly released to insert the spring hook into the pin hole, thus completing the installation. During the installation and disassembly of the return spring, one end of the return spring is always locked by the fixed semicircular groove plate 3 and the movable semicircular groove plate 6, thus effectively preventing the return spring from slipping due to tension. It has extremely high safety and is simple to operate with no learning cost.

[0028] 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 its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A tool for disassembling and assembling the return spring of a heavy-duty vehicle axle wheel-side brake shoe, characterized in that, include: A spring clamping assembly (1) includes a movable jaw (101) and a supporting jaw (102), wherein the movable jaw (101) and the supporting jaw (102) are rotatably connected, and a fixed semi-circular groove plate (3) is fixedly connected to the bottom of the movable jaw (101); and Mounting box (4), which is fixedly connected to the top of movable jaw (101), and a transmission threaded rod (9) is rotatably connected between the inner walls of the two sides of the mounting box (4). Two transmission rods (5) slide through one inner wall of the mounting box (4). One end of the two transmission rods (5) is fixedly connected to a movable semi-circular groove plate (6), and the other end of the two transmission rods (5) is fixedly connected to a transmission plate (10). The transmission plate (10) is threadedly connected to the transmission threaded rod (9).

2. The heavy-duty vehicle axle wheel-side brake shoe return spring disassembly and assembly tool according to claim 1, characterized in that: A driven bevel gear (12) is rotatably connected to one side of the outer surface of the partition (8), and a driving bevel gear (13) is rotatably connected between the upper and lower inner walls of the mounting box (4). The driving bevel gear (13) meshes with the driven bevel gear (12).

3. The heavy-duty vehicle axle wheel-side brake shoe return spring disassembly and assembly tool according to claim 2, characterized in that: The top of the mounting box (4) is rotatably connected to an external threaded screw block (7), which is fixedly connected to the active bevel gear (13).

4. The tool for removing and installing a heavy-duty vehicle axle wheel-side brake shoe return spring according to claim 1, characterized in that: Two limiting rods (11) are fixedly connected between the mounting box (4) and the partition (8), and the transmission plate (10) is slidably sleeved on the two limiting rods (11).

5. The heavy-duty vehicle axle wheel-side brake shoe return spring disassembly and assembly tool according to claim 4, characterized in that: Both of the aforementioned limit rods (11) are made of stainless steel.

6. The heavy-duty vehicle axle wheel-side brake shoe return spring disassembly and assembly tool according to claim 1, characterized in that: One end of the support jaw (102) is fixedly connected to an internal threaded connecting block (2), and the internal thread of the internal threaded connecting block (2) is connected to a connecting threaded rod (15), and one end of the connecting threaded rod (15) is fixedly connected to a rubber pad (14).

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