Bearing dismounting and cutting tool
By designing a bearing disassembly and cutting tool and using a handwheel to drive an angle grinder to cut the bearings, the problems of difficulty and safety hazards in disassembling wind turbine rotor bearings were solved, and a safe and efficient disassembly process was achieved.
Patent Information
- Application Number
- CN202422418459.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Wind turbine rotor bearings are difficult to disassemble. Existing methods pose safety risks and are labor-intensive, making it impossible to perform hot work in enclosed spaces.
A bearing disassembly and cutting tool is designed, which includes a shaft sleeve, a support plate, a connecting plate, a screw rod and a connecting seat. Cutting is performed by driving an angle grinder with a handwheel, eliminating the need for hand-holding and achieving safe and labor-saving disassembly of the bearing.
The bearing can be disassembled safely and efficiently in a closed space, which reduces labor intensity, avoids personal injury accidents and simplifies the operation process.
Smart Images
Figure CN223301455U_ABST
Abstract
Description
Technical field:
[0001] The utility model relates to the technical field of generator repair equipment, in particular to a bearing disassembly and cutting tool. Background technology:
[0002] After long-term operation, the rotor bearings of wind turbines are subject to wear and tear and need to be disassembled and replaced. Since the rotor shaft and bearings are tightly fitted, disassembly is inconvenient. The previous method was to manually use a flamethrower to heat the inner ring of the bearing to expand it, making it easier and faster to disassemble.
[0003] Since the tower of a wind turbine is an enclosed space, performing hot work in a closed space poses a serious safety hazard. For safety reasons, it is currently expressly prohibited to perform hot work in the tower of a wind turbine. In order to disassemble the bearings, workers currently use angle grinders to cut and destroy the bearings to separate them from the rotor shaft. However, when manually holding the angle grinder for cutting, there is a safety hazard of the grinding disc breaking and injuring people at close range. In addition, the labor intensity is high and it is time-consuming and labor-intensive. Utility model content:
[0004] The purpose of the utility model is to provide a bearing disassembly and cutting tool which is conducive to reducing labor intensity, saving time and labor.
[0005] The utility model is implemented by the following technical scheme: a bearing disassembly and cutting tool, which includes a shaft sleeve, a support plate, a connecting plate, a screw and a connecting seat; a top screw is screwed on the shaft sleeve, the outer wall of the shaft sleeve is fixed with the support plate, the side plate surface of the support plate is fitted with the connecting plate, a long hole is opened on the connecting plate, the screw passes through the long hole and is screwed to the support plate; a screw rod parallel to the shaft sleeve is screwed through the connecting plate, and a guide rod parallel to the screw rod is slidably penetrated on the connecting plate; the top end of the guide rod is fixed with the connecting seat, and the top end of the screw rod is rotatably connected to the connecting seat; an angle grinder is installed on the connecting seat.
[0006] Furthermore, a handwheel is fixed to the other end of the screw rod.
[0007] Furthermore, a ball bearing is embedded in the connecting seat, and the end of the screw rod is tightly fitted with the inner ring of the ball bearing.
[0008] Furthermore, a pressure cover is fastened to the end of the connecting seat, and the pressure cover is connected to the connecting seat by bolts. The fastening point between the connecting seat and the pressure cover is provided with a mounting port that matches the handle of the angle grinder.
[0009] Advantages of the present invention: When an operator operates the hand wheel and rotates the screw rod, under the guidance of the guide rod, the connecting seat drives the angle grinder to move toward the bearing on the rotor shaft, and starts cutting from the outer edge of the bearing from the outside to the inside until the bearing on one side of the rotor shaft is cut along the axis of the rotor shaft; then the top screw is loosened, the sleeve is rotated 180 degrees around the rotor shaft, and according to the above process, the other side of the bearing is cut along the axis of the rotor shaft.
[0010] The utility model is used to cut and disassemble the bearing on the rotor shaft without the need for fire or a handheld angle grinder. The operator only needs to operate the hand wheel to drive the angle grinder to cut the bearing, and stay away from the angle grinder to avoid sudden breakage of the grinding disc and injury accidents. In addition, the entire operation process is simple, saving time and effort and reducing labor intensity. Description of the drawings:
[0011] Figure 1 It is a structural diagram of the present utility model.
[0012] Figure 2 for Figure 1 A-direction view.
[0013] Figure 3 for Figure 1 B-direction view.
[0014] The components in the accompanying drawings are marked as follows: rotor shaft 1, bearing 2, sleeve 3, top screw 4, support plate 5, connecting plate 6, long hole 7, screw 8, screw rod 9, guide rod 10, connecting seat 11, angle grinder 12, handwheel 13, ball bearing 14, pressure cover 15, bolt 16, mounting port 17. Specific implementation method:
[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0016] In the description of the present invention, it should be noted that the terms "center", "up", "down", "front", "back", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0017] like Figures 1 to 3 As shown, this embodiment provides a bearing disassembly and cutting tool, which includes a sleeve 3, a support plate 5, a connecting plate 6, a screw 8 and a connecting seat 11; a top screw 4 is screwed on the sleeve 3, and the sleeve 3 is used to be sleeved on the rotor shaft 1 of the generator and tightened with the top screw 4; a support plate 5 is fixed to the outer wall of the sleeve 3, and a connecting plate 6 is fitted on the side plate surface of the support plate 5. A long hole 7 perpendicular to the rotor shaft 1 is opened on the connecting plate 6, and the screw 8 passes through the long hole 7 and is screwed to the support plate 5; after loosening the screw 8, the position of the connecting plate 6 can be adjusted in a direction perpendicular to the rotor shaft 1.
[0018] A screw rod 9 is screwed on the connecting plate 6 and is parallel to the axis of the shaft sleeve 3. A hand wheel 13 is fixed to the other end of the screw rod 9. The operator operates the screw rod 9 to rotate by the hand wheel 13, and a guide rod 10 is slidably passed through the connecting plate 6 and is parallel to the screw rod 9; the top of the guide rod 10 is fixed with a connecting seat 11, and the top of the screw rod 9 is rotatably connected to the connecting seat 11. Specifically, a ball bearing 14 is embedded in the connecting seat 11, and the end of the screw rod 9 is tightly fitted with the inner ring of the ball bearing 14; specifically, the end of the connecting seat 11 is buckled with a pressure cover 15, and the pressure cover 15 is connected to the connecting seat 11 by bolts 16. The buckling part of the connecting seat 11 and the pressure cover 15 is provided with a mounting port 17 matching the handle of the angle grinder 12. The handle of the angle grinder 12 is placed at the mounting port 17, and the angle grinder 12 is installed and fixed on the connecting seat 11 through the pressure cover 15, and the axis of the rotor shaft 1 is on the plane where the grinding disc of the angle grinder 12 is located.
[0019] Working process: Slide the sleeve 3 onto the rotor shaft 1 of the wind turbine and lock it with the top screw 4 to install the utility model in the appropriate position on the rotor shaft 1; turn on the angle grinder 12, the grinding disc rotates, and the operator operates the hand wheel 13. In the process of rotating the screw rod 9, under the guidance of the guide rod 10, the connecting seat 11 drives the angle grinder 12 to move to the bearing 2 on the rotor shaft 1, and starts cutting from the outer edge of the bearing 2. After cutting through the outer edge of the bearing 2 longitudinally, rotate the hand wheel 13 in the opposite direction, so that the connecting seat 11 drives the angle grinder 12 in the opposite direction. Retract, then loosen the screw 8. Under the guidance of the long hole 7 and the screw 8, move the connecting plate 6 to fit the support plate 5 in the direction toward the center line of the rotor shaft 1. Then tighten the screw 8 and continue cutting the bearing 2 according to the above process. Repeat this process, starting from the outer edge of the bearing 2 and cutting from the outside to the inside, until the bearing 2 on one side of the rotor shaft 1 is cut along the axis of the rotor shaft 1. Then loosen the top screw 4, rotate the sleeve 3 180 degrees around the rotor shaft 1, and cut the other side of the bearing 2 along the axis of the rotor shaft 1 according to the above process.
[0020] Therefore, the utility model is used to cut and disassemble the bearing 2 on the rotor shaft 1 without the need for fire and a handheld angle grinder 12. The operator only needs to operate the hand wheel 13 to drive the angle grinder 12 to cut the bearing 2, and stay away from the angle grinder 12 to avoid sudden breakage of the grinding disc and injury accidents; and the entire operation process is simple, saving time and effort and reducing labor intensity.
[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. Bearing disassembly and cutting tool, characterized in that: It includes a shaft sleeve, a support plate, a connecting plate, screws and a connecting seat; A top screw is screwed onto the shaft sleeve, the support plate is fixed to the outer wall of the shaft sleeve, the side plate surface of the support plate is fitted with the connecting plate, and a long hole is opened on the connecting plate, and the screw passes through the long hole and is screwed to the support plate; A screw rod parallel to the sleeve is threaded through the connecting plate, and a guide rod parallel to the screw rod is slidably passed through the connecting plate; the top end of the guide rod is fixed with the connecting seat, and the top end of the screw rod is rotatably connected to the connecting seat; an angle grinder is installed on the connecting seat.
2. The bearing disassembly and cutting tool according to claim 1, characterized in that: A hand wheel is fixed on the other end of the screw rod.
3. The bearing disassembly and cutting tool according to claim 1, characterized in that: A ball bearing is embedded in the connecting seat, and the end of the screw rod is tightly matched with the inner ring of the ball bearing.
4. The bearing disassembly and cutting tool according to any one of claims 1 to 3, characterized in that: A pressure cover is fastened to the end of the connecting seat, and the pressure cover is connected to the connecting seat by bolts. The fastening point between the connecting seat and the pressure cover is provided with a mounting port that matches the handle of the angle grinder.