Blade bearing bolt taking-out device
By designing a propeller bearing bolt removal device, and utilizing the cooperation of a rotating disk and a clamping assembly, the problem of difficulty in controlling the bolt pulling direction was solved, thus achieving stable bolt removal and bearing protection.
Patent Information
- Application Number
- CN202511359011.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-23
- Publication Date
- 2025-11-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In existing technologies, the direction of bolt removal after welding the nut is difficult to control, leading to damage to the propeller bearing.
A propeller bearing bolt removal device was designed, including a rotating disk, a clamping assembly, a rotating device, and a compensation assembly. Through the cooperation of the lifting plate and the rotating part, the nut and bolt are moved upward stably, avoiding uneven force and protecting the bearing.
This method enables stable bolt removal, avoids bolt tilting that could damage the bearing, improves removal efficiency and accuracy, and protects the bearing in the blade.
Smart Images
Figure CN121004568A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of maintenance equipment, and in particular to a propeller bearing bolt extraction device. BACKGROUND
[0002] At present, due to the misalignment of the blade bearing and the hub connection during the installation of part of the fan, part of the bolt is inclined, and problems such as bolt head fracture and nut deformation occur. The existing disposal method is to correct the connection between the propeller and the bearing and then replace the new bolt. However, the propeller bearing bolt extraction method has the following problems: after the broken bolt is loosened, it cannot be directly extracted due to the presence of a sealing washer at the bottom. The top of the bolt needs to be welded with the nut, and then a certain tool is used to adjust the direction and height repeatedly by using a hydraulic jack to extract it. The efficiency of bolt extraction is low, and the inaccurate direction adjustment can easily damage the bearing. SUMMARY
[0003] Therefore, the technical problem to be solved by the present application is to solve the technical problem that the bolt extraction direction after welding the nut is not easy to control, which can easily damage the propeller bearing.
[0004] The above technical problem is solved by the following technical scheme: the present application provides a propeller bearing bolt extraction device, which comprises a rotating disc, a through hole is provided on the rotating disc, and a mounting groove is provided on the bottom surface of the rotating disc.
[0005] The clamping assembly comprises a lifting plate slidingly arranged in the mounting groove, and a rotating part movably connected with the inner wall of the mounting groove and arranged on the bottom surface of the lifting plate.
[0006] In a preferred embodiment of the propeller bearing bolt extraction device, a circular hole is provided in the middle of the lifting plate, and the diameter of the circular hole is greater than the diameter of the through hole.
[0007] In a preferred embodiment of the propeller bearing bolt extraction device, the rotating part comprises a rotating plate, a rotating rod movably connected with the inner wall of the mounting groove and arranged on the rotating plate, and a tension rod movably arranged on the rotating plate and movably connected with the bottom surface of the lifting plate.
[0008] In a preferred embodiment of the propeller bearing bolt extraction device, an arc clamping is provided on the end of the rotating plate away from the rotating rod.
[0009] In a preferred embodiment of the propeller bearing bolt extraction device, a fixed bottom plate is further provided, and the rotating disc is located in the fixed bottom plate.
[0010] A rotating device is located directly above the fixed bottom plate, and the middle part of the rotating device is inserted into the fixed disc and passes through the fixed bottom plate.
[0011] A sliding cylinder is located between the fixed base and the rotating device for direction guiding the movement of the rotating device.
[0012] In a preferred embodiment of the blade bearing bolt extraction device, the fixed base comprises a fixed seat and an internally threaded sleeve arranged on the fixed seat, and the fixed seat is provided with an access hole for the bolt to pass through; the rotating disc is provided with external threads engaged with the internally threaded sleeve.
[0013] In a preferred embodiment of the blade bearing bolt extraction device, the fixed seat comprises a bottom plate arranged on the bottom surface of the internally threaded sleeve, and a magnet arranged on the side of the bottom plate away from the internally threaded sleeve.
[0014] In a preferred embodiment of the blade bearing bolt extraction device, the rotating device comprises a mounting plate, a motor arranged on the mounting plate, a threaded column rotatably arranged on the mounting plate and threadedly connected with the internally threaded sleeve, and the threaded column is connected with the output shaft of the motor, and a clamping head arranged at the end of the threaded column away from the motor.
[0015] In a preferred embodiment of the blade bearing bolt extraction device, the sliding cylinder comprises a fixed rod arranged on the mounting plate and a sliding rod arranged on the bottom plate.
[0016] In a preferred embodiment of the blade bearing bolt extraction device, it further comprises a compensation assembly, and the compensation assembly comprises a fixed column arranged on the threaded column, an elastic member arranged in the fixed column, a sliding plate slidably arranged in the fixed column, and a mounting rod arranged on the sliding plate, and the end of the mounting rod away from the sliding plate passes through the fixed column and is connected with the clamping head.
[0017] The beneficial effects of the present application are that the nut welded on the bolt is matched into the mounting groove, the nut is pressed on the lifting plate during upward movement, the lifting plate is pushed to move upward, and then the lifting plate drives the rotating part to rotate, the rotating part rotates to press the bottom surface of the nut, and the nut is fixed, when the bolt and the nut are driven to rotate and move upward, the rotating part and the lifting plate jointly act on the nut to pull it upward, and during the pulling process, the stable upward movement of the rotating disc also gives the nut and the bolt a directionally stable force, avoiding the uneven force on the bolt to cause inclination, and protecting the bolt limiting and fixing bearing in the paddle. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to make the technical solution of the embodiments of the present application clearer, the drawings of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described in the following description only relate to some embodiments of the present application and are not a limitation on the present application. Among them:
[0019] Figure 1 A structural schematic diagram of a rotating disc in the present application is shown;
[0020] Figure 2 A bottom structural schematic diagram of a rotating disc in the present application is shown;
[0021] Figure 3 A structural schematic diagram of a rotating disc in the present application is shown;
[0022] Figure 4 A structural schematic diagram of a rotating disc in the present application is shown;
[0023] Figure 5 A structural schematic diagram of a rotating disc in the present application is shown. DETAILED DESCRIPTION
[0024] In order to make the technical solution of the embodiments of the present application clearer, the drawings of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described in the following description only relate to some embodiments of the present application and are not a limitation on the present application. Among them:
[0025] The terms used in the present application are those general terms currently widely used in the art in consideration of the functions about the present application, but these terms can be changed according to the intention of those skilled in the art, precedents or new technologies in the art. In addition, specific terms can be selected by the applicant, and in this case, the detailed meaning thereof will be described in the detailed description of the present application. Therefore, the terms used in the specification should not be understood as simple names, but based on the meaning of the terms and the overall description of the present application.
[0026] Referring to Figures 1-2 The present embodiment provides a paddle bearing bolt extraction device, comprising a rotating disc 1, the rotating disc 1 is provided with a through hole 11, and the bottom surface of the rotating disc 1 is provided with a mounting groove 12. The through hole 11 is used for rotating and extracting the driving bolt and the nut welded on the bolt.
[0027] The clamping assembly 2 includes a lifting plate 21 slidingly arranged in the mounting groove 12, and a rotating part 22 movably arranged at the bottom surface of the lifting plate 21 and movably connected with the inner wall of the mounting groove 12. When the bolt enters the mounting groove 12, the nut fixed on the bolt pushes the lifting plate 21 to move upward, the lifting plate 21 pulls the rotating part 22 to rotate, and the rotating part 22 is rotated, thereby supporting the nut welded on the bolt, and the nut drives the bolt to move in the vertical direction, and the bolt is pulled out in the linear direction. The position of the bolt installed in the paddle has a rubber pad with a thickness of about five millimeters and a threaded fastening glue. After the bolt is rotated, the bolt cannot be directly removed due to the action of the threaded fastening glue. A stable force in a direction needs to be provided for the bolt to separate the bolt from the rubber pad and the threaded fastening glue. When the bolt moves in the linear direction, the offset and damage of the bearing limiting the bolt are avoided, and the bearing in the paddle is protected.
[0028] In summary, the nut welded on the bolt is matched with the mounting groove 12, the nut is pressed on the lifting plate 21 during upward movement, the lifting plate 21 is pushed to move upward, and the lifting plate 21 drives the rotating part 22 to rotate. The rotating part 22 rotates to press the bottom surface of the nut and fix the nut. When the bolt and the nut are driven to rotate and move upward, the rotating part 22 and the lifting plate 21 jointly act on the nut to pull the nut upward. During the pulling process, the stable force in the direction is provided for the nut and the bolt by the stable upward movement of the rotating disc 1, the uneven force on the bolt is avoided, the bolt is prevented from tilting, the limiting and fixing bearing of the bolt in the paddle is protected.
[0029] As an optional embodiment, a circular hole 211 is arranged in the middle of the lifting plate 21, and the diameter of the circular hole 211 is greater than the diameter of the through hole 11. The nut fixed on the bolt can pass through the circular hole 211 but is pressed on the through hole 11 of the rotating disc 1, and the nut cannot pass through the through hole 11.
[0030] As an optional embodiment, the rotating part 22 includes a rotating plate 221, a rotating rod 222 fixedly arranged on the rotating plate 221 and rotatably connected with the inner wall of the mounting groove 12, and a tension rod 223 movably arranged on the rotating plate 221 and movably connected with the bottom surface of the lifting plate 21. When the lifting plate 21 moves upward, the tension rod 223 can pull the rotating plate 221 to rotate, the rotating plate 221 rotates around the rotating rod 222, and the end of the rotating plate 221 away from the rotating rod 222 rotates toward the central axis direction of the rotating disc 1, thereby abutting against the bottom surface of the nut. When the nut and the bolt are pulled upward, the rotating plate 221 drives the nut to move upward, the nut takes out the bolt in the vertical direction, and the damage of the bearing caused by uneven force is avoided.
[0031] As an optional embodiment, the rotating plate 221 is provided with a clamping arc 2211 away from one end of the rotating rod 222. The clamping arc 2211 is arranged to provide space for the bolt, so that the rotating plate 221 can be in large-area contact with the nut, and the nut and the bolt can be stably pulled out.
[0032] As an optional embodiment, as shown in Figures 3-5 the fixed base 3, and the rotating disc 1 is located in the fixed base 3.
[0033] The rotating device 4 is located directly above the fixed base 3, and the middle part of the rotating device 4 is matched to extend into the fixed disc 3 and is matched to pass through the fixed base 3.
[0034] The sliding cylinder 5 is located between the fixed base 3 and the rotating device 4, and is used for direction guiding the movement of the rotating device 4.
[0035] As an optional embodiment, the fixed disc 3 includes a fixed base 31 and an internally threaded sleeve 32 fixedly arranged on the fixed base 31, and the fixed base 31 is provided with an access hole 33 for the bolt to pass through; the rotating disc 1 is provided with an external thread 13 engaged with the internally threaded sleeve 32. The internally threaded sleeve 32 is located on the central axis of the fixed base 31, and the device is installed on the paddle as a whole through the fixed base 31, avoiding the operation of holding the device by hand.
[0036] As an optional embodiment, the fixed base 31 includes a bottom plate 311 fixedly arranged on the bottom surface of the internally threaded sleeve 32, and a magnet 312 fixedly arranged on the side of the bottom plate 311 away from the internally threaded sleeve 32. The magnet 312 can realize the magnetic attraction connection between the device as a whole and the paddle, and fix the device as a whole.
[0037] As an optional embodiment, the rotating device 4 comprises a mounting plate 41, a motor 42 fixedly arranged on the mounting plate 41, a threaded column 43 rotatably arranged on the mounting plate 41 and threadedly connected with the internally-threaded sleeve 32, the threaded column 43 is connected with the output shaft of the motor 42, and a clamping head 44 is detachably arranged at the end of the threaded column 43 away from the motor 42. The threaded column 43 is fitted through the through hole 11; the clamping head 44 comprises a dismounting plate 441 detachably arranged on the threaded column 43, an extension rod 442 arranged on the dismounting plate 441, and a clamping sleeve 443 arranged on the bottom surface of the dismounting plate 441; the rotating disc 1 is provided with a limiting hole 14, two limiting blocks 15 are arranged side by side in the limiting hole 14, a gap is left between the two limiting blocks 15, the end surfaces of the two limiting blocks 15 close to each other are arc surfaces, the gap between the two limiting blocks 15 is slightly smaller than the diameter of the extension rod 442, the extension rod 442 is fitted to extend into the limiting hole 14, the limiting hole 14 is located directly above the circular hole 211, and the limiting hole 14 is an arc-shaped hole; the rotating device 4 can compress the extension rod 442 in the rotating state, the extension rod 442 is pressed against the inner wall of the mounting groove 12, and the extension rod 442 is moved to the limiting hole 14 until the extension rod 442 is fitted to extend into the limiting hole 14, so that the limiting of the rotating device 4 and the rotating disc 1 is realized, the rotating device 4 drives the rotating disc 1 to rotate synchronously, and the rotating disc 1 can move in the vertical direction; when the extension rod 442 drives the rotating disc 1 to rotate, the extension rod 442 is pressed against the inner wall of the limiting hole 14 and the limiting blocks 15, when the extension rod 442 drives the rotating disc 1 to rotate reversely, the extension rod 442 still drives the rotating disc 1 to rotate under the action of the limiting blocks 15, when the rotating disc 1 moves to the lowermost position, the extension rod 442 passes between the two limiting blocks 15 since the rotating disc 1 cannot move downward any more, and the extension rod 442 continues to slide in the arc-shaped limiting hole 14 until the extension rod 442 is separated from the rotating disc 1, so that the rotating device 4 can be moved downward, the lifting plate 21 moves downward under the action of gravity, the lifting plate 21 pushes the tension rod 223, the rotating plate 221 rotates around the rotating rod 222, the limiting of the nut fixed on the bolt is released, and the bolt can be taken out conveniently; the clamping sleeve 443 is provided with a clamping groove, the clamping head 44 is detachably arranged on the threaded column 43, the detachable nut matched with the nut welded on the bolt is clamped in the clamping groove, and the simple installation and replacement of the detachable nut are realized; the motor 42 drives the threaded column 43 to rotate, the threaded column 43 is threadedly connected with the internally-threaded sleeve 32, the threaded column 43 drives the clamping head 44 and the detachable nut to rotate, and the detachable nut can be rotated and detached. The welded nut is clamped in the rotating device 4, the nut welded on the bolt is located in the recess of the blade mounting bolt, the bolt cannot be clamped, the nut is clamped after the bolt and the nut are rotated out of the blade and into the rotating device 4, and then the nut and the bolt can be pulled out synchronously in the subsequent rotation and rising process.
[0038] As an optional embodiment, the sliding cylinder 5 includes a fixed rod 51 fixedly mounted on the mounting plate 41 and a sliding rod 52 fixedly mounted on the base plate 311. The fixed rod 51 is slidably disposed within the sliding rod 52, providing a stable direction for the movement of the rotating device 4, guiding the movement of the rotating disk 1 and the clamping assembly 2, and providing a stable direction for the removal of the bolts and the fixing nuts, preventing the bolts from shifting direction during removal, which could cause the bearings of the fixing bolts to be squeezed and damaged or their positions to shift, thus protecting the bearings inside the blades.
[0039] As an optional embodiment, a compensation component 6 is also included. The compensation component 6 includes a fixed post 61 fixedly mounted on the threaded post 43, an elastic element 62 fixedly mounted within the fixed post 61, a sliding plate 63 slidably mounted within the fixed post 61, and a mounting rod 64 fixedly mounted on the sliding plate 63. One end of the mounting rod 64, away from the sliding plate 63, extends out of the fixed post 61 and connects to the clamping head 44. The elastic element 62 drives the sliding plate 63 to move vertically, providing space for fine-tuning the position of the mounting rod 64. When the distance the threaded post 43 moves upward after the motor 42 rotates differs from the distance the bolt moves upward after rotation, the elastic element 62 enables the mounting rod 64 to move, compensating for the distance difference. This maintains stable compression between the clamping sleeve 443 and the nut fixed on the bolt, providing stable power for bolt removal. The diameter of the compensation component 6 is smaller than the diameter of the threaded post 43 and smaller than the diameter of the rotating device 4. The mounting rod 64 passes through the through hole 11. The diameter of the rotating device 4 is larger than the diameter of the through hole 11. The rotating device 4 extends into the mounting groove 12 and can drive the rotating disk 1 to rotate.
[0040] In summary, the magnet 312 enables magnetic connection between the entire device and the blade, securing the device. Simultaneously, the nut engages with the clamping sleeve 443. At this point, the motor 42 rotates, causing the threaded post 43 to rotate. The disassembly plate 441 moves upward and enters the mounting groove 12. The disassembly plate 441 pushes the lifting plate 21, pressing the telescopic rod 442 against the inner wall of the mounting groove 12 until it reaches the limiting hole 14 and passes through the gap between the two limiting blocks 15. The motor 42 continues to drive the disassembly plate 441 and the rotating disk 1 to rotate, allowing the rotating disk 1 to move vertically... The nut moves upward; during the upward movement, the disassembly plate 441 presses against the lifting plate 21, pushing the lifting plate 21 upward, which in turn causes the lifting plate 21 to drive the rotating part 22 to rotate. The rotating part 22 then presses against the bottom surface of the nut, fixing the nut. When the bolt and nut rotate upward, the rotating part 22 and the lifting plate 21 work together to pull the nut upward. During the pulling process, the stable upward movement of the rotating disk 1 also provides a directional stable force to the nut and bolt, preventing uneven force on the bolt and causing tilting, thus protecting the bolt limit fixing bearing in the blade.
[0041] When the telescopic rod 442 drives the rotating disk 1 to rotate in the opposite direction, the telescopic rod 442 continues to drive the rotating disk 1 to rotate under the action of the limiting block 15. When the rotating disk 1 moves to the bottom, since the rotating disk 1 can no longer move downward, the telescopic rod 442 passes between the two limiting blocks 15 and continues to slide in the arc-shaped limiting hole 14 until the telescopic rod 442 separates from the rotating disk 1. Then the rotating device 4 can be moved downward, and the lifting plate 21 moves downward under the action of gravity. The lifting plate 21 pushes the tension rod 223, so that the rotating plate 221 rotates around the rotating rod 222, releasing the limitation on the nut fixed on the bolt, thus making it easier to remove the bolt.
[0042] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.
Claims
1. A device for removing propeller bearing bolts, characterized in that: include, A rotating disk (1), wherein the rotating disk (1) is provided with a through hole (11), and the bottom surface of the rotating disk (1) is provided with a mounting groove (12); and The clamping assembly (2) includes a lifting plate (21) slidably disposed in the mounting groove (12) and a rotating part (22) disposed on the bottom surface of the lifting plate (21) and movably connected to the inner wall of the mounting groove (12).
2. The propeller bearing bolt removal device according to claim 1, characterized in that: The lifting plate (21) has a circular hole (211) in the middle, and the diameter of the circular hole (211) is larger than the diameter of the through hole (11).
3. The propeller bearing bolt removal device according to claim 2, characterized in that: The rotating part (22) includes a rotating plate (221), a rotating rod (222) disposed on the rotating plate (221) and rotatably connected to the inner wall of the mounting groove (12), and a tensioning rod (223) movably disposed on the rotating plate (221) and movably connected to the bottom surface of the lifting plate (21).
4. The propeller bearing bolt removal device according to claim 3, characterized in that: The rotating plate (221) has a clamping arc (2211) at the end away from the rotating rod (222).
5. The propeller bearing bolt removal device according to claim 4, characterized in that: It also includes a fixed chassis (3), and the rotating disk (1) is located inside the fixed chassis (3); A rotating device (4) is located directly above the fixed base (3), and the middle part of the rotating device (4) extends into the fixed base (3) and passes through the fixed base (3); and A sliding cylinder (5) is located between the fixed chassis (3) and the rotating device (4) and is used to guide the movement of the rotating device (4).
6. The propeller bearing bolt removal device according to claim 5, characterized in that: The fixed disk (3) includes a fixed base (31) and an internal threaded sleeve (32) disposed on the fixed base (31). The fixed base (31) is provided with an inlet and outlet hole (33) for bolts to pass through. The rotating disk (1) is provided with an external thread (13) that meshes with the internal threaded sleeve (32).
7. The propeller bearing bolt removal device according to claim 6, characterized in that: The fixed base (31) includes a base plate (311) disposed on the bottom surface of the internal threaded sleeve (32) and a magnet (312) disposed on the side of the base plate (311) away from the internal threaded sleeve (32).
8. The propeller bearing bolt removal device according to claim 7, characterized in that: The rotating device (4) includes a mounting plate (41), a motor (42) mounted on the mounting plate (41), a threaded post (43) rotatably mounted on the mounting plate (41) and threadedly connected to the internal threaded sleeve (32), the threaded post (43) being connected to the output shaft of the motor (42), and a clamping head (44) disassembled at the end of the threaded post (43) away from the motor (42).
9. The propeller bearing bolt removal device according to claim 8, characterized in that: The sliding cylinder (5) includes a fixed rod (51) disposed on the mounting plate (41) and a sliding rod (52) disposed on the base plate (311).
10. The propeller bearing bolt removal device according to claim 9, characterized in that: It also includes a compensation component (6), which includes a fixed post (61) disposed on the threaded post (43), an elastic element (62) disposed in the fixed post (61), a sliding plate (63) slidably disposed in the fixed post (61), and a mounting rod (64) disposed on the sliding plate (63), wherein one end of the mounting rod (64) away from the sliding plate (63) extends out of the fixed post (61) and is connected to the clamping head (44).