A maintenance tool for gearbox bearings
By designing a gearbox bearing repair fixture that includes a repair housing and a servo motor drive, the problem of unstable positioning was solved, achieving stable positioning and convenient operation, thereby improving repair efficiency and reducing the labor intensity of workers.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING KANGWEI HEAVY IND MACHINERY MFG CO LTD
- Filing Date
- 2025-04-11
- Publication Date
- 2026-06-02
AI Technical Summary
In the current gearbox bearing maintenance process, the positioning is not stable, which leads to complicated operation, increases the workload of workers, and is prone to side slip wear.
A maintenance fixture comprising a maintenance housing, a processing plate, a fixed box, a positioning slider, and a servo motor is designed. The servo motor drives the screw to move the fixed plate and the hinge rod, thereby realizing the relative movement of the positioning slider in the positioning groove. Combined with the T-shaped slide and the hinge rod, it achieves omnidirectional stable positioning and is conveniently moved with the universal rollers.
It improves the maintenance efficiency of gearbox bearings, reduces the labor intensity of workers, ensures stable positioning, avoids lateral slippage, and enhances the convenience and efficiency of operation.
Smart Images

Figure CN224310431U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of gearbox bearings, and in particular to a maintenance tool for gearbox bearings. Background Technology
[0002] Bearings are an important component in mechanical equipment. Their main function is to support rotating mechanical parts, reduce the coefficient of friction during movement, and ensure rotational accuracy. Slippage and wear between the bearing and bearing bore are very common problems in gearboxes. When slippage and wear occur between the bearing and bearing bore, the bearing bore is worn into an irregular circle or ellipse, creating a gap between the bearing and bearing bore. The bearing bore can no longer effectively center and support the bearing. As the gearbox continues to operate, the wear will become more and more severe, and the bearing center will deviate more and more from the bearing bore. At the same time, the rotating shaft assembled with the bearing will no longer be able to rotate around a fixed center, affecting the normal operation of the rotating shaft.
[0003] Currently, when repairing gearbox bearings, the circular structure of the bearings makes positioning them time-consuming and labor-intensive. Existing repair fixtures mainly use lead screws and positioning blocks to clamp and position the bearings at both ends. However, this method is prone to slippage when machining the bearing sides, resulting in unstable positioning. Using bolts for tightening further complicates the process and increases the workload for workshop workers. To address this, we propose a new repair fixture for gearbox bearings. Utility Model Content
[0004] In order to overcome the shortcomings of the prior art, this utility model provides a maintenance fixture for gearbox bearings.
[0005] To solve the above technical problems, the present invention provides the following technical solution: it includes a repair box, a processing plate is movably arranged on the top of the repair box, a fixed box is fixedly installed at the top center of the processing plate, a repair tray is installed on the top of the fixed box, positioning grooves are opened around the repair tray, a positioning component is provided inside the fixed box, and the positioning component includes a positioning slider that moves within the positioning groove.
[0006] A fixing plate is movably installed inside the fixing box. A hinge rod is movably connected between the fixing plate and the bottom of the positioning slider through a hinge. A positioning block for positioning and clamping the gearbox bearing body is fixedly installed on the top of the positioning slider.
[0007] Preferably, the top of the repair box is provided with an adjustment groove, the top of the repair box is connected to the processing plate through the adjustment groove, and the bottom of the repair box is fixedly installed with universal rollers and adjustable support feet.
[0008] Preferably, a servo motor is fixedly installed at the bottom of the fixed box, the output end of the servo motor is connected to a screw, the fixed plate is threaded through the screw, a limit rod is fixedly installed inside the fixed box, and the fixed plate moves through the limit rod.
[0009] Preferably, the maintenance disc has a T-shaped groove at the bottom of the positioning groove, and a T-shaped slider is slidably connected to the maintenance disc in the T-shaped groove. The top end of the T-shaped slider is fixedly installed at the bottom of the positioning slider.
[0010] Preferably, the fixing box has a square structure, and the fixing box has movable slots around its perimeter that match the size of the hinge rods, with the hinge rods moving through the movable slots.
[0011] Preferably, the positioning slider moves within the positioning groove, the positioning block is made of plastic, and the maintenance box is connected to a door with a handle via a hinged joint.
[0012] Compared with the prior art, the beneficial effects that this utility model can achieve are:
[0013] 1. The servo motor drives the fixed plate on the screw to descend under the action of the limit rod. When the fixed plate descends in the fixed box, it drives the positioning slider in the positioning groove to move relative to each other through the hinge and hinge rod. When the positioning slider moves relatively close in the positioning groove, it performs a circumferential positioning movement on the gearbox bearing through the positioning block. The positioning blocks around the gearbox bearing provide all-round positioning support, so that the gearbox bearing will not slip when the side is processed, making the processing more stable and smooth, improving the maintenance efficiency of the operator and reducing the labor intensity of the operator.
[0014] 2. When the positioning slider moves in a relatively close manner in the positioning groove, the T-shaped groove and T-shaped slider prevent the positioning block from shaking or getting stuck during the movement, ensuring smooth and stable operation. When the positioning slider positions the gearbox bearing, the T-shaped groove and T-shaped slider also ensure that the positioning slider does not shake, making the positioning support of the positioning block for the gearbox bearing more stable. The hinge rod drives the positioning slider to make stable relative movement through the through-slot.
[0015] 3. The maintenance box is easily moved by the universal rollers and adjustable support feet. The position of the processing plate and the fixed box can be adjusted by the adjustment groove on the top of the maintenance box, so that the maintenance plate can be adjusted to different positions to facilitate the maintenance of gearbox bearings and improve the maintenance efficiency of workshop workers. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the structure of the fixing box of this utility model;
[0018] Figure 3 This is a schematic diagram of the positioning slider of this utility model;
[0019] Figure 4 This is a schematic diagram of the internal structure of the fixing box of this utility model.
[0020] The components are as follows: 10. Maintenance box; 11. Processing plate; 12. Adjustable slide rail; 13. Universal roller; 14. Adjustable support foot; 15. Box door; 20. Fixed box; 21. Fixed plate; 22. Hinge; 23. Hinge rod; 24. Servo motor; 25. Screw; 26. Limit rod; 27. Movable groove; 30. Maintenance panel; 31. Positioning groove; 32. Positioning slider; 33. Positioning block; 34. T-shaped slide rail; 35. T-shaped slider. Detailed Implementation
[0021] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this utility model. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.
[0022] Example: Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the device includes a maintenance housing 10, a processing plate 11 movably mounted on the top of the maintenance housing 10, a fixed box 20 fixedly mounted at the top center of the processing plate 11, a maintenance tray 30 mounted on the top of the fixed box 20, positioning grooves 31 formed around the maintenance tray 30, a positioning component inside the fixed box 20, and a positioning slider 32 movably mounted within the positioning groove 31, a fixed plate 21 movably mounted inside the fixed box 20, and a hinge rod 23 movably connected between the fixed plate 21 and the bottom of the positioning slider 32 via a hinge 22, and a positioning block 33 fixedly mounted on the top of the positioning slider 32 for positioning and clamping the gearbox bearing body.
[0023] The gearbox bearing is positioned and supported by the maintenance plate 30. The positioning slider 32 in the positioning groove 31 moves in a relatively converging motion. The positioning block 33 on the top of the positioning slider 32 positions and fixes the gearbox bearing around its perimeter, making the clamping effect more stable. This prevents the gearbox bearing from slipping during side processing and makes the clamping and fixing of the gearbox bearing more stable.
[0024] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The top of the maintenance box 10 is provided with an adjustment slide 12, and the top of the maintenance box 10 is connected to the processing plate 11 through the adjustment slide 12. The bottom of the maintenance box 10 is fixedly installed with universal rollers 13 and adjustable support feet 14. The bottom of the fixed box 20 is fixedly installed with a servo motor 24. The output end of the servo motor 24 is connected to a screw 25. A fixed plate 21 is threaded through the screw 25. A limit rod 26 is fixedly installed inside the fixed box 20. The fixed plate 21 is movably inserted through the limit rod 26.
[0025] The fixed plate 21 is driven by the servo motor 24 to achieve lifting and lowering under the action of the limit rod 26. During the descent, the fixed plate 21 drives the positioning slider 32 in the positioning groove 31 to move relative to each other through the hinge rod 23, hinge piece 22 and movable groove 27. When the positioning slider 32 moves relatively close together, it performs stable positioning processing on the gearbox bearing through the positioning block 33. When the fixed plate 21 rises, it drives the positioning slider 32 in the positioning groove 31 to move in the opposite direction through the hinge piece 22, hinge rod 23 and movable groove 27, so that the positioning slider 32 moves out in the positioning groove 31, realizing the positioning release of the gearbox bearing. The maintenance tool makes it convenient to position and disassemble the gearbox bearing, improves the maintenance efficiency of the gearbox bearing, and reduces the labor intensity of workshop workers.
[0026] See Figure 1 , Figure 2 , Figure 3 and Figure 4The maintenance tray 30 has a T-shaped slide groove 34 at the bottom of the positioning groove 31. A T-shaped slider 35 is slidably connected to the maintenance tray 30 in the T-shaped slide groove 34. The top of the T-shaped slider 35 is fixedly installed at the bottom of the positioning slider 32. The fixed box 20 has a square structure. Movable grooves 27 that match the size of the hinge rod 23 are opened around the fixed box 20. The hinge rod 23 moves through the movable grooves 27. The positioning slider 32 moves in the positioning groove 31. The positioning block 33 is made of plastic. The maintenance box 10 is connected to a door 15 with a handle by a hinge.
[0027] The T-shaped groove 34 and T-shaped slider 35 enable the positioning slider 32 to move back and forth smoothly and stably in the positioning groove 31. The positioning slider 32 clamps the gearbox bearing in the positioning groove 31 without misalignment or shaking, making the positioning of the gearbox bearing more stable. The through connection of the hinge rod 23 in the movable groove 27 enables the movement of the fixed plate 21 to drive the positioning slider 32 to move synchronously.
[0028] Working principle: The gearbox bearing to be repaired is placed at the top center of the repair plate 30. The servo motor 24 drives the fixing plate 21 on the screw 25 to descend under the action of the limit rod 26. When the fixing plate 21 descends in the fixing box 20, it drives the positioning slider 32 in the positioning groove 31 to move relative to each other through the hinge 22 and the hinge rod 23. When the positioning slider 32 moves relatively close in the positioning groove 31, it performs a circumferential positioning movement of the gearbox bearing through the positioning block 33. The positioning blocks 33 around the gearbox bearing provide all-round positioning support.
[0029] When the positioning slider 32 is pulled relatively together in the positioning groove 31, the T-shaped groove 34 and the T-shaped slider 35 ensure that the positioning block 33 will not shake or get stuck during the movement, and the operation is smooth and stable. The hinge rod 23 drives the positioning slider 32 to make stable relative movement through the through movable groove 27.
[0030] The maintenance box 10 can be easily moved by the universal rollers 13 and the adjustable support feet 14. The position of the processing plate 11 and the fixed box 20 can be adjusted by the adjustment groove 12 on the top of the maintenance box 10, so that the maintenance plate 30 can be adjusted to different positions to facilitate the maintenance of gearbox bearings and improve the maintenance efficiency of workshop workers.
[0031] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.
Claims
1. A maintenance fixture for gearbox bearings, comprising a maintenance housing (10), characterized in that, The top of the repair box (10) is movably provided with a processing plate (11), and a fixed box (20) is fixedly installed at the top center of the processing plate (11). A repair tray (30) is installed on the top of the fixed box (20), and a positioning groove (31) is opened around the repair tray (30). A positioning component is provided inside the fixed box (20), and the positioning component includes a positioning slider (32) that moves in the positioning groove (31). The fixed box (20) is movably provided with a fixed plate (21). The fixed plate (21) and the bottom of the positioning slider (32) are movably connected by a hinge rod (23) through a hinge (22). The top of the positioning slider (32) is fixedly installed with a positioning block (33) for positioning and clamping the gearbox bearing body.
2. The maintenance fixture for gearbox bearings according to claim 1, characterized in that, The top of the maintenance box (10) is provided with an adjustment groove (12), and the top of the maintenance box (10) is connected to the processing plate (11) through the adjustment groove (12). The bottom of the maintenance box (10) is fixedly installed with universal rollers (13) and adjustable support feet (14).
3. The maintenance fixture for gearbox bearings according to claim 1, characterized in that, A servo motor (24) is fixedly installed at the bottom of the fixed box (20). The output end of the servo motor (24) is connected to a screw (25). The screw (25) is threaded through the fixed plate (21). A limit rod (26) is fixedly installed inside the fixed box (20). The fixed plate (21) is movably inserted through the limit rod (26).
4. The maintenance fixture for gearbox bearings according to claim 1, characterized in that, The maintenance plate (30) has a T-shaped groove (34) at the bottom of the positioning groove (31), and a T-shaped slider (35) is slidably connected to the maintenance plate (30) in the T-shaped groove (34). The top of the T-shaped slider (35) is fixedly installed at the bottom of the positioning slider (32).
5. A maintenance fixture for gearbox bearings according to claim 1, characterized in that, The fixed box (20) has a square structure. The fixed box (20) has movable slots (27) around its perimeter that match the size of the hinge rod (23). The hinge rod (23) moves through the movable slots (27).
6. A maintenance fixture for gearbox bearings according to claim 1, characterized in that, The positioning slider (32) moves in the positioning groove (31), the positioning block (33) is made of plastic, and the maintenance box (10) is connected to a door (15) with a handle by a hinge.