Safety protection device for disassembling hydraulic yaw brake of wind generating set
A safety protection device stabilizes the piston during hydraulic yaw brake disassembly in wind turbines, using a base, support structure, and limit screw to manage high-pressure gas, ensuring safe and controlled removal of the piston.
Patent Information
- Application Number
- CN202420601515.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-26
AI Technical Summary
The disassembly of hydraulic yaw brakes in wind turbines poses a safety hazard due to the piston potentially flying out and injuring personnel, as high air pressure is required to remove the piston, which is difficult to control and can lead to accidents.
A safety protection device comprising a base, support structure, top seat, and limit screw is used to stabilize the piston during disassembly, with high-pressure gas introduced to slowly push the piston out, controlled by the limit screw's movement to prevent accidental ejection.
The device effectively prevents the piston from flying out, ensuring safe disassembly by controlling its movement and maintaining stability, thereby preventing injuries.
Smart Images
Figure CN222162835U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of auxiliary tools for disassembling wind power generation equipment, and in particular to a safety protection device for disassembling a hydraulic yaw brake of a wind power generation set. Background Art
[0002] A wind turbine is a power generation device that converts wind energy into mechanical energy. The wind turbine captures the best wind energy through the action of the yaw system, putting it in the best power generation state. After the yaw action is completed, the yaw brake is required to provide it with the necessary locking torque to keep it in the windward state.
[0003] At present, the yaw brake of wind turbines mostly adopts hydraulic brake, which uses hydraulic pressure to push the piston in the brake caliper to move, and then push the yaw friction plate to achieve the purpose of yaw braking. Since the working principle of yaw brake is friction, it has a large loss during use, and regular maintenance is required to ensure the reliable operation of yaw brake and avoid impurities generated by friction from contaminating the hydraulic oil. When maintaining yaw brake, in addition to replacing the friction plate, the piston needs to be removed to maintain the piston chamber.
[0004] Since the lubrication channel of the yaw brake is connected to the piston cavity, the related technology often uses the method of inflating the oil inlet of the yaw brake to increase the pressure in the piston cavity, thereby pushing the piston out of the piston cavity. Since the yaw brake is driven by hydraulic pressure, it has high requirements for sealing, and the damping of the piston and the piston cavity is large, so a higher air pressure is required to push the piston out. After using a higher air pressure, the piston may fly out after leaving the piston cavity and injure people, posing a safety hazard. Utility Model Content
[0005] The purpose of the present invention is to provide a safety protection device for disassembling a hydraulic yaw brake of a wind turbine generator set, which can avoid the potential safety hazard of a piston flying out and injuring people during the disassembly process of the piston in the hydraulic yaw brake.
[0006] In order to achieve the above-mentioned purpose, the present disclosure provides a safety protection device for disassembling the hydraulic yaw brake of a wind turbine generator set, the safety protection device comprising a base, a supporting structure, a top seat and a limit screw, the base being used to support the bottom of a brake seat of the hydraulic yaw brake of the wind turbine generator set; the supporting structure extends in the up and down directions, and the bottom of the supporting structure is connected to the base; the top seat is located directly above the base, the top of the supporting structure is connected to the base, and a placement space for placing the brake seat is formed between the top seat and the base; the limit screw is threadedly connected to the top seat, the first end of the limit screw is located above the top seat, and the second end of the limit screw is located in the placement space and is used to abut against the piston on the brake seat.
[0007] Optionally, an abutting block is fixed to the supporting structure. The abutting block has an abutting surface facing the placing space. The abutting surface is used to abut against the side wall of the brake seat. There is a first horizontal distance between the central axis of the limiting screw and the abutting surface. There is a minimum horizontal distance and a maximum horizontal distance between the outer peripheral surface of the piston and the side wall of the brake seat. The first horizontal distance is greater than the minimum horizontal distance and less than the maximum horizontal distance.
[0008] Optionally, there is a second horizontal distance between the central axis of the piston and the side wall of the brake seat. The first horizontal distance is equal to the second horizontal distance.
[0009] Optionally, the base, the supporting structure and the top seat form a "C" shape.
[0010] Optionally, a first reinforcing rib is connected between the base and the supporting structure, and a second reinforcing rib is connected between the top seat and the supporting structure.
[0011] Optionally, the base is formed as a first frame structure, the top seat is formed as a second frame structure, and the supporting structure includes a plurality of supporting columns arranged at intervals; the second frame structure includes a first horizontal beam, a second horizontal beam and a third horizontal beam. The first horizontal beam and the second horizontal beam are parallel and opposite to each other. The third horizontal beam is connected between the first horizontal beam and the second horizontal beam. The supporting column is connected to the first horizontal beam. A threaded hole is provided on a part of the third horizontal beam close to the second horizontal beam. The limiting screw is threadedly connected to the top seat through the threaded hole.
[0012] Optionally, a buffer block is fixed to the second end of the limiting screw.
[0013] Optionally, a handle is fixed to the first end of the limiting screw. The handle and the limiting screw form a T shape.
[0014] Optionally, a nut is fixed to the top seat. A through hole coaxial with the nut is provided on the top seat. The limiting screw is threadedly connected to the nut and passes through the through hole.
[0015] Optionally, there are a plurality of limiting screws. The plurality of limiting screws are arranged at intervals. The distance between the central axes of two adjacent limiting screws is equal to the distance between the central axes of two adjacent pistons.
[0016] Through the above technical solution, before disassembling the piston of the hydraulic yaw brake of the wind turbine generator set, first separate the piston cover of the hydraulic yaw brake from the brake seat, place the brake seat with the piston in the placement space, and support the bottom of the brake seat with the base. Then, turn the first end of the limit screw to move the second end of the limit screw downward until the lower end of the limit screw abuts against the end face of the piston. In the process of disassembling the piston, first introduce high-pressure gas into the oil filling hole of the brake seat. Since the oil filling hole is connected to the piston cavity in the brake seat for placing the piston, the high-pressure gas introduced into the oil filling hole of the brake seat will reach the piston cavity and provide the piston with a thrust to move the piston upward. At this time, slowly turn the first end of the limit screw in the opposite direction to slowly move the second end of the limit screw upward until the piston is completely out of the piston cavity. During this process, the piston also moves slowly upward under the action of high-pressure gas, and the moving speed and distance of the piston are limited by the upward moving speed and distance of the first end of the limiting screw. Therefore, the safety protection device can effectively avoid the safety hazard of preventing the piston from flying out and injuring people.
[0017] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:
[0019] Figure 1 is a schematic diagram of the three-dimensional structure of a safety protection device provided by an exemplary embodiment of the present disclosure;
[0020] Figure 2 is a schematic diagram of a three-dimensional structure in which a brake seat provided by an exemplary embodiment of the present disclosure is placed in a safety protection device;
[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of a safety protection device provided in another exemplary embodiment of the present disclosure.
[0022] Description of Reference Numerals
[0023] 10- base;
[0024] 20-support structure; 21-column; 22-abutment block; 23-abutment surface;
[0025] 30-top seat; 31-first horizontal beam; 32-second horizontal beam; 33-third horizontal beam; 34-nut;
[0026] 40-limiting screw; 41-handle;
[0027] 50- first reinforcement rib;
[0028] 60- second reinforcement rib;
[0029] 70-buffer block;
[0030] 80-hydraulic yaw brake; 81-brake seat; 82-piston. DETAILED DESCRIPTION
[0031] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.
[0032] In the description of the present disclosure, it should be understood that the terms "upper", "lower" and the like indicate positions or location relationships based on the accompanying drawings (such as Figure 1 ) is defined only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, a specific orientation structure and operation, and therefore cannot be understood as a limitation of the present disclosure. In addition, the terms "inside" and "outside" refer to the inside and outside of the corresponding structural contour. In addition, the terms "first", "second", etc. are only used to distinguish one element from another, and do not have order and importance.
[0033] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "connected", and "installed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.
[0034] The present disclosure provides a safety protection device for disassembling a hydraulic yaw brake 80 of a wind turbine generator set, which can avoid the potential safety hazard of the piston 82 in the hydraulic yaw brake 80 flying out and injuring people during the disassembly process.
[0035] like Figures 1 to 3As shown, the structure of the safety protection device includes a base 10, a support structure 20, a top seat 30 and a limit screw 40. The base 10 is used to support the bottom of the brake seat 81 of the hydraulic yaw brake 80 of the wind turbine generator set; the support structure 20 extends in the up-down direction, and the bottom of the support structure 20 is connected to the base 10; the top seat 30 is located directly above the base 10, the top of the support structure 20 is connected to the base 10, and a placement space for placing the brake seat 81 is formed between the top seat 30 and the base 10; the limit screw 40 is threadedly connected to the top seat 30, the first end of the limit screw 40 is located above the top seat 30, and the second end of the limit screw 40 is located in the placement space and is used to abut against the piston 82 on the brake seat 81.
[0036] Before disassembling the piston 82 of the hydraulic yaw brake 80 of the wind turbine generator set, the piston 82 cover of the hydraulic yaw brake 80 is separated from the brake seat 81, and the brake seat 81 with the piston 82 is placed in the placement space, and the bottom of the brake seat 81 is supported by the base 10. Then, the first end of the limit screw 40 is twisted to move the second end of the limit screw 40 downward until the lower end of the limit screw 40 abuts against the end surface of the piston 82. In the process of disassembling the piston 82, high-pressure gas is first introduced into the oil filling hole of the brake seat 81. Since the oil filling hole is connected to the piston cavity in the brake seat 81 for placing the piston 82, the high-pressure gas introduced into the oil filling hole of the brake seat 81 will reach the piston cavity and provide the piston 82 with a thrust to move the piston 82 upward. At this time, the first end of the limit screw 40 is slowly twisted in the opposite direction to slowly move the second end of the limit screw 40 upward until the piston 82 is completely out of the piston cavity. During this process, the piston 82 also moves slowly upward under the action of the high-pressure gas, and the moving speed and distance of the piston 82 are limited by the upward moving speed and distance of the first end of the limiting screw 40. Therefore, the safety protection device can effectively avoid the safety hazard of preventing the piston 82 from flying out and injuring people.
[0037] It can be understood that since the weight of the brake seat 81 and the piston 82 both act on the base 10, the stability of the safety protection device can be improved to prevent the safety protection device from moving during use. At the same time, it also ensures that no relative movement occurs between the safety protection device and the brake seat 81.
[0038] It should be noted that the moving direction of the limiting screw 40 is the vertical direction, so that the second end of the limiting screw 40 is always located directly above the piston 82 , thereby ensuring the limiting effect of the limiting screw 40 on the piston 82 .
[0039] In some alternative embodiments, the support structure 20 is fixed with an abutting block 22 which has an abutting surface 23 facing the placement space. The abutting surface 23 is used to abut against the side wall of the brake seat 81. There is a first horizontal distance between the central axis of the limit screw 40 and the abutting surface 23. There is a minimum horizontal distance and a maximum horizontal distance between the outer peripheral surface of the piston 82 and the side wall of the brake seat 81. The first horizontal distance is greater than the minimum horizontal distance and less than the maximum horizontal distance.
[0040] By setting the above-mentioned first horizontal distance to be greater than the above-mentioned minimum horizontal distance and less than the maximum horizontal distance, when placing the brake seat 81 on the base 10, only need to move the side wall of the brake seat 81 in the first direction (the first direction is the Figure 2 Y direction in Figure 2 ) to the position where it abuts against the abutting surface 23, then the rough positioning effect of the brake seat 81 in the first direction can be realized through the abutting surface 23. After that, by moving the brake seat 81 in the second direction (the second direction is the
[0041] X direction in
[0042] which is horizontally perpendicular to the first direction), the piston 82 in the brake seat 81 can be quickly moved directly below the limit screw 40, so that the projection of the second end of the limit screw 40 in the vertical direction is located on the piston 82.
[0043] In some alternative embodiments, the abutting surface 23 can be formed by the surface of the support structure 20 facing the placement space.
[0044] In some alternative embodiments, there is a first reinforcing rib 50 connected between the base 10 and the support structure 20, and a second reinforcing rib 60 connected between the top seat 30 and the support structure 20.
[0045] The first reinforcing rib 50 can strengthen the connection strength between the base 10 and the support structure 20, and prevent the angle between the base 10 and the support structure 20 from increasing when the stop bolt abuts the piston 82, thereby causing the safety protection device to be deformed and damaged. The second reinforcing rib 60 can strengthen the connection strength between the top seat 30 and the support structure 20, and prevent the angle between the top seat 30 and the support structure 20 from increasing when the stop bolt abuts the piston 82, thereby causing the safety protection device to be deformed and damaged.
[0046] It should be noted that when the safety protection device is provided with the first reinforcing rib 50, the horizontal distance between the position where the first reinforcing rib 50 is connected to the base 10 and the supporting structure 20 is smaller than the horizontal distance between the abutting surface 23 and the supporting structure 20. This ensures that when the brake seat 81 abuts against the abutting surface 23, there will be no interference with the first reinforcing rib 50.
[0047] In some optional embodiments, the base 10 is formed as a first frame structure, the top seat 30 is formed as a second frame structure, and the support structure 20 includes a plurality of support columns arranged at intervals.
[0048] The base 10 is formed into a first frame structure, so that the base 10 is formed with a first cavity, thereby reducing the weight of the base 10. The top seat 30 is formed into a second frame structure, so that the base 10 is formed with a second cavity, thereby reducing the weight of the top seat 30. The support structure 20 is provided as a plurality of support columns arranged at intervals, and a third cavity is formed between the plurality of support columns, thereby reducing the weight of the support structure 20.
[0049] In addition, regarding the structure of the second frame, the second frame structure includes a first horizontal beam 31, a second horizontal beam 32 and a third horizontal beam 33, the first horizontal beam 31 and the second horizontal beam 32 are parallel to each other and arranged opposite to each other, the third horizontal beam 33 is connected between the first horizontal beam 31 and the second horizontal beam 32, the support column is connected to the first horizontal beam 31, and a threaded hole is arranged on the portion of the third horizontal beam 33 close to the second horizontal beam 32, and the limiting screw 40 is threadedly connected to the top seat 30 through the threaded hole.
[0050] By setting the threaded hole on the portion of the third horizontal beam 33 close to the second horizontal beam 32 , the top seat 30 can have a simpler structure and lighter weight while meeting the use requirements.
[0051] Since there is hydraulic oil in the piston cavity, the hydraulic oil has a viscous resistance to the piston 82 located in the piston cavity. At the moment when the piston 82 is separated from the piston cavity, the viscous resistance of the hydraulic oil to the piston 82 disappears, causing the piston 82 to suddenly accelerate and collide with the second end of the limit screw 40, which may cause the surface of the piston 82 to be scratched or the adjusting screw to deform.
[0052] Therefore, in some optional embodiments, a buffer block 70 is fixed to the second end of the limiting screw 40. The buffer block 70 can play a buffering role. Therefore, after the piston 82 is separated from the piston cavity, the piston 82 flies out and collides with the buffer block 70, thereby preventing the piston 82 from directly colliding with the second end of the adjusting screw to cause the surface of the piston 82 to be damaged or the adjusting screw to be deformed.
[0053] In some optional embodiments, the buffer block 70 is detachably connected to the second end of the limiting screw 40 to facilitate replacement of the buffer block 70. The connection between the buffer block 70 and the limiting screw 40 includes but is not limited to a threaded connection and a bolted connection.
[0054] It should also be mentioned that the buffer block 70 may be made of a material with a lower hardness than the piston 82 and the adjusting screw, such as a copper block or a nylon block.
[0055] In order to facilitate the turning of the adjusting screw, in some optional embodiments, a handle 41 is fixed to the first end of the limiting screw 40, and the handle 41 and the limiting screw 40 form a T-shape. The T-shaped handle 41 is more convenient for operators to hold.
[0056] In order to more conveniently form the threaded hole, in some optional embodiments, the top seat 30 is fixed with a nut 34, the top seat 30 is provided with a through hole coaxial with the nut 34, and the limiting screw 40 is threadedly connected to the nut 34 and penetrates the through hole (the through hole is not shown). By using the threaded hole of the nut 34 itself, the tapping steps of the top seat 30 can be reduced, and the processing strength of the safety protection device can be reduced.
[0057] It should be noted that the nut 34 can be fixed on the top seat 30 by welding.
[0058] The hydraulic brake used in the related art usually has a plurality of pistons 82. The above-mentioned solution requires moving the piston 82 seat and the screw rod for positioning multiple times before the plurality of pistons 82 can be disassembled one by one.
[0059] In some optional embodiments, there are multiple limiting screws 40 , and the multiple limiting screws 40 are arranged at intervals, and the distance between the central axes of two adjacent limiting screws 40 is equal to the distance between the central axes of two adjacent pistons 82 .
[0060] By setting a plurality of limit screws 40, and making the distance between the central axes of two adjacent limit screws 40 equal to the distance between the central axes of two adjacent pistons 82. In this way, after positioning any one of the plurality of pistons 82, the other pistons 82 can be automatically positioned. Therefore, after positioning once, the plurality of pistons 82 can be disassembled one by one in sequence. The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and within the technical concept of the present disclosure, the technical solution of the present disclosure can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present disclosure.
[0061] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
[0062] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.
Claims
1. A safety protection device for disassembling the hydraulic yaw brake of a wind turbine generator set, characterized in that: Comprising: A base for supporting the bottom of a brake seat of a hydraulic yaw brake of a wind turbine generator; A support structure extending in the vertical direction, with the bottom of the support structure connected to the base; A top seat located directly above the base, with the top of the support structure connected to the base, and a placement space for placing the brake seat formed between the top seat and the base; A limit screw threadedly connected to the top seat, with the first end of the limit screw located above the top seat and the second end of the limit screw located within the placement space and configured to abut against a piston on the brake seat.
2. The safety protection device according to claim 1, characterized in that: An abutting block is fixed to the support structure, the abutting block has an abutting surface facing the placement space, the abutting surface is configured to abut against the side wall of the brake seat, there is a first horizontal distance between the central axis of the limit screw and the abutting surface, there is a minimum horizontal distance and a maximum horizontal distance between the outer peripheral surface of the piston and the side wall of the brake seat, and the first horizontal distance is greater than the minimum horizontal distance and less than the maximum horizontal distance.
3. The safety protection device according to claim 2, characterized in that: There is a second horizontal distance between the central axis of the piston and the side wall of the brake seat, and the first horizontal distance is equal to the second horizontal distance.
4. The safety protection device according to claim 2, characterized in that: The base, the support structure, and the top seat form a "C" shape.
5. The safety protection device according to claim 4, characterized in that: A first reinforcing rib is connected between the base and the support structure, and a second reinforcing rib is connected between the top seat and the support structure.
6. The safety protection device according to claim 1, characterized in that: The base is formed as a first frame structure, the top seat is formed as a second frame structure, and the support structure includes a plurality of support columns arranged at intervals; The second frame structure includes a first horizontal beam, a second horizontal beam, and a third horizontal beam. The first horizontal beam and the second horizontal beam are parallel and oppositely arranged, the third horizontal beam is connected between the first horizontal beam and the second horizontal beam, the support column is connected to the first horizontal beam, and a threaded hole is provided on a portion of the third horizontal beam close to the second horizontal beam, and the limit screw is threadedly connected to the top seat through the threaded hole.
7. The safety protection device according to any one of claims 1 to 6, characterized in that: A buffer block is fixed to the second end of the limit screw.
8. The safety protection device according to any one of claims 1 to 6, characterized in that: A handle is fixed to the first end of the limit screw, and the handle and the limit screw form a T shape.
9. The safety protection device according to any one of claims 1 to 6, characterized in that: A nut is fixed to the top seat, and a through hole coaxial with the nut is provided on the top seat, and the limit screw is threadedly connected to the nut and passes through the through hole.
10. The safety protection device according to any one of claims 1 to 6, characterized in that: There are a plurality of limit screws, and the plurality of limit screws are arranged at intervals. The distance between the central axes of two adjacent limit screws is equal to the distance between the central axes of two adjacent pistons.