Bearing maintenance device

Abstract

The utility model provides a bearing maintenance device, which relates to the technical field of maintenance, and comprises two seat bodies arranged at an interval; the two guide rollers are rotationally connected to the two base bodies correspondingly, and the two guide rollers can be attached to the outer ring of the bearing to be maintained so that the bearing can be supported by the two guide rollers; the pressing mechanism is arranged between the two seat bodies, a pressing part of the pressing mechanism can extend into an inner ring of the bearing and press the inner ring, during maintenance, the inner ring and an outer ring of the bearing can be rotated respectively for maintenance, and during rotation, the inner ring and the outer ring of the bearing can be rotated through the guiding and supporting effects of a guiding roller and the pressing part of the pressing mechanism; the rotation of the bearing is realized; and the stability of the bearing is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of maintenance, and more specifically, relates to a bearing maintenance device. Background Art

[0002] The sliding bearings of rolling machinery are key components in rolling equipment. They bear huge loads under high-temperature, high-pressure and high-speed working conditions. Therefore, there are extremely high requirements for their performance and reliability. The application of sliding bearings in rolling machinery mainly includes supporting rolls, transmitting torque and reducing friction, etc. When a sliding bearing fails, it needs to be repaired. During the repair, the sliding bearing is first hoisted onto the maintenance device. The maintenance device needs to carry and fix the sliding bearing, and the maintenance device also needs to have the function of adjusting the position of the bearing.

[0003] In the existing technology, the bearing is usually fixed and supported by a multi-point clamping method. When it is necessary to adjust the maintenance position of the bearing, it is necessary to loosen the multi-point clamping device and continuously adjust the position of the clamping device, rotate the bearing to the corresponding position and fix it, which is very inconvenient and reduces the maintenance efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies of the existing technology and provide a bearing maintenance device to solve the problem that when the existing bearing is repaired, it is fixed and supported by a multi-point clamping method. When it is necessary to adjust the maintenance position of the bearing, it is necessary to continuously adjust the position of the clamping device to rotate and adjust the position of the bearing, which is very inconvenient and reduces the maintenance efficiency as mentioned in the above background art.

[0005] To achieve the above purpose, the utility model provides a bearing maintenance device, which includes:

[0006] Two seat bodies, the two seat bodies are arranged at intervals;

[0007] Two guide rollers, the two guide rollers are respectively rotatably connected to the two seat bodies, and the two guide rollers can be attached to the outer ring of the bearing to be repaired, so as to realize the support of the two guide rollers for the bearing;

[0008] A pressing mechanism, the pressing mechanism is arranged between the two seat bodies, and the pressing part of the pressing mechanism can extend into the inner ring of the bearing and press the inner ring.

[0009] Preferably, the bearing maintenance device further includes:

[0010] An inspection table;

[0011] A displacement driving mechanism, the displacement driving mechanism is arranged on the inspection table, the displacement driving mechanism is provided with two moving parts moving relatively or moving away from each other, and the two seat bodies are respectively connected to the two moving parts.

[0012] Preferably, through holes are provided at both ends of the seat body, a guiding shaft is rotatably connected in the through holes, a gap is provided between the guiding shaft and the inner side of the through holes, the gap communicates with the oil injection mechanism, and both ends of the guiding roller are respectively connected to the two guiding shafts on the seat body.

[0013] Preferably, the pressing mechanism includes:

[0014] A frame body, a slideway opening is provided along the height direction of the inner side of the frame body, and a threaded hole is provided at the top of the frame body;

[0015] A pressing block, the pressing block is slidably connected in the slideway opening;

[0016] A pressing screw rod, the pressing screw rod is threadedly connected to the threaded hole, and the bottom end of the pressing screw rod is rotatably connected to the top of the pressing block;

[0017] A pressing roller, one end of the pressing roller is connected to the pressing block, and the pressing roller is a pressing part.

[0018] Preferably, anti-slip patterns are provided on the outer side walls of the guiding roller and the pressing roller.

[0019] Preferably, the displacement driving mechanism includes:

[0020] A supporting block, a guiding groove is provided on the maintenance table, and the supporting block is connected to the middle of the guiding groove.

[0021] Two screw rods, the two screw rods are arranged on both sides of the supporting block, one ends of the two screw rods are respectively rotatably connected to both sides of the supporting block, and the other ends of the two screw rods are respectively rotatably connected to both ends of the guiding groove;

[0022] Two nut blocks, the two nut blocks are respectively threadedly connected to the two screw rods, the nut blocks are slidably connected in the guiding groove, and the two nut blocks are respectively the two moving parts.

[0023] An operating component, the operating component is connected to the two screw rods, and the operating component can drive the two screw rods to rotate simultaneously.

[0024] Preferably, the operating component includes:

[0025] A driving screw rod, a threaded driving hole is provided between the middle of one side of the guiding groove and the middle of one side of the maintenance table, and the driving screw rod is threadedly connected to the threaded driving hole;

[0026] A first bevel gear, the first bevel gear is connected to the end of the driving screw rod in the guiding groove;

[0027] Two second bevel gears, each of the two second bevel gears is connected to one of the two lead screws respectively, and the first bevel gear is meshed and connected with the two second bevel gears;

[0028] A handle, the handle is connected to one end of the drive screw outside the guide groove.

[0029] Preferably, the oil injection mechanism includes:

[0030] A plurality of balls, a lubrication cavity is provided inside the guide shaft, lubricating oil is input into the lubrication cavity, an opening is provided at one end of the guide shaft away from the guide roller, and a plurality of ball holes are distributed on the outer side wall of the guide shaft. Each of the plurality of balls is respectively connected in the plurality of ball holes in a rolling manner;

[0031] A cylinder body, at least one oil injection hole is provided on the bottom of the cylinder body, a sealing member is provided at the mouth of the cylinder body, the bottom of the cylinder body is arranged in the lubrication cavity, and the cylinder body is threadedly connected to the through hole;

[0032] An oil injection plate, the oil injection plate is slidably connected inside the cylinder body

[0033] A spring, the spring is arranged between the oil injection plate and the sealing member.

[0034] Preferably, the oil injection mechanism includes:

[0035] Two sliding blocks, the two sliding blocks are connected at intervals on the periphery of the oil injection plate, two sliding grooves are provided inside the cylinder body, and the two sliding blocks are respectively slidably connected in the two sliding grooves;

[0036] At least one plug is provided on the surface of the oil injection plate close to the oil injection hole, and each plug can be inserted into one of the oil injection holes;

[0037] A knob, the knob is connected to the outside of the mouth of the cylinder body.

[0038] Preferably, the oil injection mechanism further includes:

[0039] A sealing head, one end of the sealing head can be inserted into the mouth of the cylinder body;

[0040] A cover body, the cover body is connected to the other end of the sealing head;

[0041] A sealing gasket, the sealing gasket is arranged between the cover body and the end of the mouth of the cylinder body.

[0042] The present utility model provides a bearing maintenance device, and its beneficial effects are as follows: The two guiding rollers of the maintenance device are respectively rotatably connected to two seat bodies, the pressing mechanism is arranged between the two seat bodies, the bearing can be sleeved on the pressing part of the pressing mechanism, the outer ring of the bearing can be placed on the two guiding rollers, when operating the pressing mechanism, the inner ring of the bearing can be pressed, so as to realize the pressing and fixing of both the inner and outer sides of the bearing. During maintenance, the inner ring and the outer ring of the bearing can be respectively rotated for inspection, and during rotation, through the guiding and supporting effects of the guiding rollers and the pressing part of the pressing mechanism, the rotation of the bearing is realized and the stability of the bearing is improved.

[0043] Other features and advantages of the present utility model will be described in detail in the following specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] By describing the exemplary embodiments of the present utility model in more detail in conjunction with the drawings, the above-mentioned and other objects, features and advantages of the present utility model will become more obvious. Among them, in the exemplary embodiments of the present utility model, the same reference numerals generally represent the same components.

[0045] Figure 1 FIG. 1 shows a three-dimensional structural schematic diagram of a bearing maintenance device according to an embodiment of the present utility model;

[0046] Figure 2 FIG. 2 shows a structural schematic diagram of a displacement driving mechanism of a bearing maintenance device according to an embodiment of the present utility model;

[0047] Figure 3 FIG. 3 shows a structural schematic diagram of a pressing mechanism of a bearing maintenance device according to an embodiment of the present utility model;

[0048] Figure 4 FIG. 4 shows a sectional structural schematic diagram of an oil injection mechanism of a bearing maintenance device according to an embodiment of the present utility model;

[0049] Figure 5 FIG. 5 shows a sectional structural schematic diagram of a cylinder body of a bearing maintenance device according to an embodiment of the present utility model.

[0050] DESCRIPTION OF THE REFERENCE NUMERALS:

[0051] 1. Inspection table; 2. Base; 3. Guide shaft; 4. Guide roller; 5. Frame; 6. Pressing screw; 7. Pressing block; 8. Pressing roller; 9. Anti-slip groove; 10. Cylinder; 11. Lubrication chamber; 12. Ball bearing; 13. Guide groove; 14. Nut block; 15. Screw; 16. Drive screw; 17. Handle; 18. First bevel gear; 19. Second bevel gear; 20. Oil filling hole; 21. Oil filling plate; 22. Plug; 23. Sealing head; 24. Spring; 25. Sliding block; 26. Sliding groove; 27. Sealing gasket; 28. Knob. DETAILED DESCRIPTION

[0052] The following describes preferred embodiments of the present invention in greater detail. Although preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0053] like Figure 1 As shown, the utility model provides a bearing maintenance device, which includes:

[0054] Two seat bodies 2, the two seat bodies 2 are spaced apart;

[0055] Two guide rollers 4, the two guide rollers 4 are rotatably connected to the two base bodies 2, and the two guide rollers 4 can fit with the outer ring of the bearing to be repaired to achieve the two guide rollers 4 supporting the bearing;

[0056] The clamping mechanism is arranged between the two base bodies 2, and the clamping part of the clamping mechanism can extend into the inner ring of the bearing and clamp the inner ring.

[0057] In order to solve the problem that the existing bearings are fixed and supported by a multi-point clamping method during maintenance, when the maintenance position of the bearing needs to be adjusted, the position of the clamping device needs to be continuously adjusted to rotate and adjust the position of the bearing, which is very inconvenient and reduces the maintenance efficiency. The utility model provides a bearing maintenance device, wherein the two guide rollers 4 of the maintenance device are rotatably connected to the two base bodies 2 respectively, and the clamping mechanism is arranged between the two base bodies 2. The bearing can be sleeved on the clamping part of the clamping mechanism, and the outer ring of the bearing can be placed on the two guide rollers 4. When the clamping mechanism is operated, the inner ring of the bearing can be clamped, thereby realizing the clamping and fixing of the inner and outer sides of the bearing. During maintenance, the inner and outer rings of the bearing can be rotated separately for maintenance, and during rotation, the bearing rotation is realized and the stability of the bearing is improved through the guiding and supporting effect of the guide rollers 4 and the clamping part of the clamping mechanism.

[0058] Preferably, the bearing maintenance device further comprises:

[0059] Maintenance station 1;

[0060] A displacement driving mechanism is arranged on the maintenance table 1. The displacement driving mechanism is provided with two moving parts that move relative to each other or move away from each other, and the two seat bodies 2 are respectively connected to the two moving parts.

[0061] Specifically, the displacement driving mechanism is used to adjust the distance between the two guide rollers 4 and can realize the fixed support of different bearings.

[0062] Preferably, through holes are provided at both ends of the seat body 2. A guide shaft 3 is rotatably connected in the through hole. There is a gap between the guide shaft 3 and the inner side of the through hole, and the gap is communicated with the oil injection mechanism. Both ends of the guide roller 4 are respectively connected to the two guide shafts 3 on the seat body 2.

[0063] Specifically, to solve the problem that when adjusting the rotation and maintenance position of the bearing, the guide roller will be driven to rotate, and the weight of the bearing acts on the guide roller. Frequent rotation of the guide roller is likely to cause increased wear between the guide roller and the seat body, which not only affects the smoothness of the bearing rotation but also easily generates noise. In this application, the gap is communicated with the oil injection mechanism. When the guide roller 4 rotates, the friction between the guide shaft 3 and the through hole is reduced, and the smoothness of the rotation of the guide roller 4 is improved.

[0064] As Figure 3 shown, preferably, the pressing mechanism includes:

[0065] A frame body 5. A slideway opening is provided along the height direction of the inner side of the frame body 5, and a threaded hole is provided at the top of the frame body 5;

[0066] A pressing block 7 is slidably connected in the slideway opening;

[0067] A pressing screw 6 is threadedly connected to the threaded hole. The bottom end of the pressing screw 6 is rotatably connected to the top of the pressing block 7;

[0068] A pressure roller 8. One end of the pressure roller 8 is connected to the pressing block 7, and the pressure roller 8 is a pressing part.

[0069] Specifically, when the pressing mechanism is in use, the bearing is sleeved on the pressure roller 8, and the outer ring of the bearing is placed on the two guide rollers 4. Rotate the pressing screw 6, the pressing screw 6 drives the pressing block 7 to move downward, and the pressing block 7 drives the pressure roller 8 to move downward to press the inner ring of the bearing, thereby realizing the pressing and fixing of both sides of the bearing. During maintenance, the inner ring and outer ring of the bearing can be rotated separately for maintenance, and when rotating, through the guiding and supporting effects of the guide roller 4 and the pressure roller 8, the stability of the bearing rotation is improved.

[0070] Preferably, anti-slip patterns are provided on the outer side walls of the guide roller 4 and the pressure roller 8.

[0071] Specifically, it avoids slipping between the bearing and the guide roller 4.

[0072] As Figure 2 shown, preferably, the displacement driving mechanism includes:

[0073] A support block. A guiding groove 13 is provided on the maintenance table 1, and the support block is connected to the middle of the guiding groove 13.

[0074] Two lead screws 15. The two lead screws 15 are arranged on both sides of the support block. One ends of the two lead screws 15 are respectively rotatably connected to both sides of the support block, and the other ends of the two lead screws 15 are respectively rotatably connected to both ends of the guiding groove 13;

[0075] Two nut blocks 14. The two nut blocks 14 are respectively threadedly connected to the two lead screws 15. The nut blocks 14 are slidably connected in the guiding groove 13, and the two nut blocks 14 are respectively the two moving parts.

[0076] A control member. The control member is connected to the two lead screws 15, and the control member can drive the two lead screws 15 to rotate simultaneously.

[0077] Preferably, the control member includes:

[0078] A driving screw 16. A threaded driving hole is provided between the middle of one side of the guiding groove 13 and the middle of one side of the maintenance table 1, and the driving screw 16 is threadedly connected to the threaded driving hole;

[0079] A first bevel gear 18. The first bevel gear 18 is connected to one end of the driving screw 16 in the guiding groove 13;

[0080] Two second bevel gears 19. The two second bevel gears 19 are respectively connected to the two lead screws 15, and the first bevel gear 18 is meshed and connected to the two second bevel gears 19;

[0081] A handle 17. The handle 17 is connected to one end of the driving screw 16 outside the guiding groove 13.

[0082] Specifically, when the displacement driving mechanism is in use, according to the size of the bearing to be maintained, rotate the handle 17. The handle 17 drives the driving screw 16 to rotate. The driving screw 16 drives the first bevel gear 18 to rotate. The first bevel gear 18 drives the two second bevel gears 19 to rotate. The two second bevel gears 19 respectively drive the two lead screws 15 to rotate. The lead screws 15 rotate threadedly with the connected nut blocks 14, and under the guiding action of the guiding groove 13, the two lead screws 15 respectively drive the two nut blocks 14 to move relatively or away from each other along the guiding groove 13. The two nut blocks 14 respectively drive the guiding rollers 4 on the two seat bodies 2 to move. By adjusting the distance between the two guiding rollers 4, different bearings can be fixedly supported.

[0083] As Figure 4 and Figure 5 shown, preferably, the oil injection mechanism includes:

[0084] A plurality of ball bearings 12. There is a lubrication cavity 11 inside the guide shaft 3. Lubricating oil is used to be input into the lubrication cavity 11. One end of the guide shaft 3 away from the guide roller 4 is provided with an opening. A plurality of ball holes are distributed on the outer side wall of the guide shaft 3. The plurality of ball bearings 12 are respectively connected in the plurality of ball holes in a rolling manner;

[0085] A cylinder body 10. At least one oil injection hole 20 is provided at the bottom of the cylinder body 10. A sealing member is provided at the mouth of the cylinder body 10. The bottom of the cylinder body 10 is arranged in the lubrication cavity 11. The cylinder body 10 is threadedly connected to the through hole;

[0086] An oil injection plate 21. The oil injection plate 21 is slidably connected inside the cylinder body 10

[0087] A spring 24. The spring 24 is arranged between the oil injection plate 21 and the sealing member;

[0088] Two sliding blocks 25. The two sliding blocks 25 are connected at intervals on the circumferential side of the oil injection plate 21. Two sliding grooves 26 are provided inside the cylinder body 10. The two sliding blocks 25 are respectively slidably connected in the two sliding grooves 26;

[0089] One side of the oil injection plate 21 close to the oil injection hole 20 is provided with at least one plug 22. Each plug 22 can be inserted into one oil injection hole 20;

[0090] A knob 28. The knob 28 is connected to the outer side of the mouth of the cylinder body 10.

[0091] Specifically, when the oil injection mechanism is in use, first inject lubricating oil into the lubrication cavity 11, and then threadedly install the cylinder body 10 into the opening of the guide shaft 3 by rotating the knob 28, and extend the bottom of the cylinder body 10 into the lubrication cavity 11. The lubricating oil enters the inside of the cylinder body 10 through the oil injection hole 20 in a compressed state and pushes the oil injection plate 21. The spring 24 between the oil injection plate 21 and the sealing member will be in a compressed state. At this time, the elastic force of the spring 24 can make the oil injection plate 21 drive the plug 22 to move toward the oil injection hole 20 side, so that the lubricating oil can flow back to the lubrication cavity 11 through the oil injection hole 20 and generate a certain pressure on the lubricating oil, so that the ball bearings 12 can dip the lubricating oil. When the guide shaft 3 rotates, the ball bearings 12 on the guide shaft 3 rotate, and after dipping the lubricating oil, lubricate between the guide shaft 3 and the through hole of the seat body 2, reduce the friction between the guide shaft 3 and the through hole, and improve the smooth rotation of the guide roller 4. When the injection of the lubricating oil in the cylinder body 10 is completed, the plug 22 blocks the oil injection hole 20 and seals the oil injection hole 20.

[0092] Preferably, the oil injection mechanism further includes:

[0093] A sealing head 23. One end of the sealing head 23 can be inserted into the mouth of the cylinder body 10;

[0094] A cover body. The cover body is connected to the other end of the sealing head 23;

[0095] The gasket 27 is arranged between the cover body and the end of the barrel mouth of the barrel body 10.

[0096] Specifically, the sealing head 23 and the gasket 27 are used to realize the sealing of the cover body to the barrel body 10.

[0097] In summary, when the bearing maintenance device of the present utility model is implemented, according to the size of the bearing to be repaired, the handle 17 is rotated. The handle 17 drives the driving screw 16 to rotate. The driving screw 16 drives the first bevel gear 18 to rotate. The first bevel gear 18 drives the two second bevel gears 19 to rotate. The two second bevel gears 19 respectively drive the two lead screws 15 to rotate. The lead screws 15 rotate threadedly with the connected nut blocks 14. Under the guiding action of the guiding groove 13, the two lead screws 15 respectively drive the two nut blocks 14 to move relatively or away from each other along the guiding groove 13. The two nut blocks 14 respectively drive the guiding rollers 4 on the two seat bodies 2 to move. By adjusting the distance between the two guiding rollers 4, different bearings are fixedly supported. Then the bearing is sleeved on the pressing roller 8, and the outer ring of the bearing is placed on the two guiding rollers 4. The pressing screw 6 is rotated. The pressing screw 6 drives the pressing block 7 to move downward. The pressing block 7 drives the pressing roller 8 to move downward to press the inner ring of the bearing, thereby realizing the pressing and fixing of both sides of the bearing. During maintenance, the inner ring and the outer ring of the bearing can be rotated separately for maintenance. And during rotation, due to the guiding and supporting actions of the guiding roller 4 and the pressing roller 8, the stability of the bearing rotation is improved;

[0098] When the oil injection mechanism is in use, first inject lubricating oil into the lubricating cavity 11. Then, by rotating the knob 28, the barrel body 10 is threadedly installed in the opening of the guiding shaft 3, and the bottom of the barrel body 10 extends into the lubricating cavity 11. The lubricating oil enters the interior of the barrel body 10 through the oil injection hole 20 in a compressed state and pushes the oil injection plate 21. The spring 24 between the oil injection plate 21 and the plug 22 will be in a compressed state. At this time, the elastic force of the spring 24 can make the oil injection plate 21 drive the plug 22 to move toward the oil injection hole 20, so that the lubricating oil can flow back into the lubricating cavity 11 through the oil injection hole 20 and generate a certain pressure on the lubricating oil, enabling the balls 12 to dip the lubricating oil. When the guiding shaft 3 rotates, the balls 12 on the guiding shaft 3 rotate, dip the lubricating oil and lubricate between the guiding shaft 3 and the through hole of the seat body 2, reducing the friction between the guiding shaft 3 and the through hole and improving the smoothness of the rotation of the guiding roller 4. When the injection of the lubricating oil in the barrel body 10 is completed, the plug 22 blocks the oil injection hole 20 to seal the oil injection hole 20.

[0099] The embodiments of the present utility model have been described above. The above description is exemplary and not exhaustive, and is also not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A bearing maintenance device, characterized in that, The maintenance device includes: Two bodies, the two bodies are arranged at intervals; Two guide rollers, the two guide rollers are respectively rotatably connected to the two bodies, and the two guide rollers can be attached to the outer ring of the bearing to be maintained, so as to realize the two guide rollers supporting the bearing; A pressing mechanism, the pressing mechanism is arranged between the two bodies, and the pressing part of the pressing mechanism can extend into the inner ring of the bearing and press the inner ring.

2. The bearing repair device according to claim 1, characterized in that, The bearing maintenance device further includes: An inspection table; A displacement driving mechanism, the displacement driving mechanism is arranged on the inspection table, the displacement driving mechanism is provided with two moving parts that move relative to each other or move away from each other, and the two bodies are respectively connected to the two moving parts.

3. A bearing repair device according to claim 1, characterized in that Through holes are provided at both ends of the body, a guide shaft is rotatably connected in the through hole, a gap is provided between the guide shaft and the inner side of the through hole, the gap is communicated with the oil injection mechanism, and both ends of the guide roller are respectively connected to the two guide shafts on the body.

4. A bearing repair device according to claim 1, characterized in that, The pressing mechanism includes: A frame body, a slideway opening is arranged along the height direction of the inner side of the frame body, and a threaded hole is arranged at the top of the frame body; A pressing block, the pressing block is slidably connected in the slideway opening; A pressing screw, the pressing screw is threadedly connected to the threaded hole, and the bottom end of the pressing screw is rotatably connected to the top of the pressing block; A pressure roller, one end of the pressure roller is connected to the pressing block, and the pressure roller is the pressing part.

5. The bearing repair device according to claim 4, characterized in that, Anti-slip patterns are provided on the outer side walls of the guide roller and the pressure roller.

6. The bearing repair device according to claim 2, characterized in that, The displacement driving mechanism includes: A support block, a guide groove is arranged on the inspection table, and the support block is connected to the middle of the guide groove; Two lead screws, the two lead screws are arranged on both sides of the support block, one ends of the two lead screws are respectively rotatably connected to both sides of the support block, and the other ends of the two lead screws are respectively rotatably connected to both ends of the guide groove; Two nut blocks, the two nut blocks are respectively threadedly connected to the two lead screws, the nut blocks are slidably connected in the guide groove, and the two nut blocks are respectively the two moving parts; An operating component, the operating component is connected to the two lead screws, and the operating component can drive the two lead screws to rotate simultaneously.

7. The bearing repair device according to claim 6, wherein, The operating component includes: A driving screw, a threaded driving hole is arranged between the middle of one side of the guide groove and the middle of one side of the inspection table, and the driving screw is threadedly connected to the threaded driving hole; A first bevel gear, the first bevel gear is connected to the end of the driving screw in the guide groove; Two second bevel gears, the two second bevel gears are respectively connected to the two lead screws, and the first bevel gear is meshed and connected to the two second bevel gears; A handle, the handle is connected to the end of the driving screw outside the guide groove.

8. The bearing maintenance device according to claim 3, characterized in that, The oil injection mechanism includes: A plurality of balls, a lubrication cavity is arranged inside the guide shaft, lubricating oil is used to be input into the lubrication cavity, an opening is arranged at one end of the guide shaft away from the guide roller, a plurality of ball holes are distributed on the outer side wall of the guide shaft, and the plurality of balls are respectively rotatably connected in the plurality of ball holes; A cylinder body, at least one oil injection hole is provided on the bottom seal of the cylinder body, a sealing component is provided at the mouth of the cylinder body, the bottom seal of the cylinder body is arranged in the lubrication cavity, and the cylinder body is threadedly connected to the through hole; An oil injection plate, which is slidably connected inside the cylinder body A spring, which is arranged between the oil injection plate and the sealing component.

9. The bearing repair device according to claim 8, wherein, The oil injection mechanism includes: Two sliding blocks, the two sliding blocks are connected at intervals on the periphery of the oil injection plate, two sliding grooves are provided inside the cylinder body, and the two sliding blocks are respectively slidably connected in the two sliding grooves; At least one plug is provided on the side of the oil injection plate close to the oil injection hole, and each plug can be inserted into one of the oil injection holes; A knob, which is connected to the outside of the mouth of the cylinder body.

10. A bearing repair device according to claim 8, characterized in that, The oil injection mechanism further includes: A sealing head, one end of which can be inserted into the mouth of the cylinder body; A cover body, which is connected to the other end of the sealing head; A sealing gasket, which is arranged between the cover body and the end of the mouth of the cylinder body.

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