A wind power gear box body vibration buffering support device
Patent Information
- Application Number
- CN202522430938.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-17
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-11-17
AI Technical Summary
[0006]本实用新型的目的在于提供一种风电齿轮箱箱体振动缓冲支撑装置，以解决上述背景技术中提出的适应性和抗极端载荷能力不足的问题
[0014]与现有技术相比，本实用新型的有益效果是：该风电齿轮箱箱体振动缓冲支撑装置不仅实现了自适应调节阻尼的功能，实现了平衡油压抗极端载荷的功能，而且实现了齿轮箱动态监测的功能；
Smart Images
Figure CN224785854U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wind power generation technology, specifically to a vibration buffer support device for a wind turbine gearbox housing. Background Technology
[0002] As a major force in clean energy, wind power is seeing its unit capacity continuously increase, leading to increasingly severe torque transmission and load requirements on wind turbine gearboxes. As the core transmission component of a wind turbine generator set, the reliability of the gearbox directly affects the overall operating efficiency and lifespan of the unit.
[0003] Currently, wind turbine gearboxes generally employ passive elastic support systems, primarily consisting of rubber pads and metal elastic bearings. These systems utilize the deformation of elastic materials to absorb vibration energy. While simple in structure and low in cost, they have the following inherent limitations: Fixed performance and poor adaptability: Its stiffness and damping parameters are fixed values after design and manufacturing. It cannot simultaneously meet the contradictory requirements of "suppressing low-frequency resonance" and "isolating high-frequency vibration". High damping can effectively suppress resonance during start-up and shutdown, but it will worsen the vibration isolation effect during normal operation; conversely, low damping cannot effectively control the resonance amplitude.
[0004] Insufficient resistance to extreme loads: When faced with extreme overturning moments caused by sudden winds, power grid impacts, etc., traditional independent supports may cause local support point overload, resulting in permanent deformation of the elastomer or damage to the support structure, affecting the gearbox's alignment, and even causing secondary failures.
[0005] Now, a novel vibration buffer support device for wind turbine gearbox housing is proposed to solve the above problems. Utility Model Content
[0006] The purpose of this utility model is to provide a vibration buffer support device for wind turbine gearbox housing, so as to solve the problems of insufficient adaptability and resistance to extreme loads mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a vibration buffer support device for a wind turbine gearbox, comprising a gearbox connecting frame, a buffer assembly, a pressure balancing assembly, and a monitoring assembly. Buffer fixing frames are respectively provided on both sides of the gearbox connecting frame. Oil tanks are respectively fixedly connected inside the upper and lower ends of the buffer fixing frames. Two sets of connecting pipes are crosswise arranged between the two sets of buffer fixing frames. A micro controller is fixedly installed at the top of the buffer fixing frame.
[0008] The buffer assembly includes two sets of rubber compression chambers, which are respectively located at the upper and lower ends inside the buffer fixing frame. The rubber compression chambers are provided with accordion-style outer covers, and the accordion-style outer covers are provided with supporting springs inside. A first solenoid valve is fixedly installed between the oil tank and the rubber compression chambers.
[0009] As a further technical solution of this utility model, the bellows-style outer shell and the buffer fixing frame are connected by a flange, and the bottom end of the support spring is fixedly connected to the bottom end inside the bellows-style outer shell.
[0010] As a further technical solution of this utility model, the upper and lower ends of both sides of the gearbox connecting frame are respectively connected to the bellows-type outer casing flange, and the first solenoid valve, micro controller, and monitoring component are electrically connected.
[0011] As a further technical solution of this utility model, the pressure balancing assembly includes a balancing chamber, which is fixedly installed outside the oil tank. A second solenoid valve is fixedly installed at one end of the outside of the oil tank. A delivery pipe is fixedly installed between the balancing chamber and the second solenoid valve. An electric cylinder is fixedly installed at the rear end of the balancing chamber. A piston is fixedly connected to the output end of the electric cylinder. An oil pressure sensor is fixedly installed at the other end of the outside of the oil tank.
[0012] As a further technical solution of this utility model, the balance chamber and the delivery pipe are internally connected, and the electric cylinder, the second solenoid valve, the oil pressure sensor and the microcontroller are electrically connected.
[0013] As a further technical solution of this utility model, the monitoring component includes a fixed base, which is fixedly connected to the top of the gearbox connecting frame. A fixed housing is welded and fixed to the top of the fixed base. An inclination sensor is fixedly installed at the middle position inside the fixed housing. A vibration sensor is fixedly installed on the right side inside the fixed housing. An acceleration sensor is fixedly installed on the left side inside the fixed housing. The vertical center lines of the gearbox connecting frame, the fixed base, and the fixed housing coincide. The microcontroller, the inclination sensor, the vibration sensor, and the acceleration sensor are electrically connected.
[0014] Compared with the prior art, the beneficial effects of this utility model are: the wind turbine gearbox vibration buffer support device not only realizes the function of adaptive damping adjustment and the function of balancing oil pressure to resist extreme loads, but also realizes the function of dynamic monitoring of the gearbox. (1) With the buffer component, the gearbox connecting frame is fixed to the outside of the gearbox during use, and the two ends are connected to the bellows-type outer shell flange. The vibration of the gearbox is transmitted to the bellows-type outer shell through the gearbox connecting frame. When the gearbox connecting frame moves up, it squeezes the upper rubber compression chamber. After being squeezed, the rubber compression chamber contracts and the hydraulic oil flows back into the oil tank. The support spring can limit the contraction amplitude of the rubber compression chamber and help the rebound. The lower rubber compression chamber and the support spring extend synchronously to support both sides of the gearbox connecting frame. The microcontroller can quickly determine the current motion state of the gearbox based on the information fed back by the acceleration sensor. If the resonance frequency is detected, such as during the start-stop phase, the microcontroller immediately instructs the first solenoid valve to reduce the opening and increase the damping force to quickly suppress the resonance amplitude and protect the structure. When high-frequency meshing vibration is detected, i.e. during normal operation, the microcontroller instructs the first solenoid valve to increase the opening and reduce the damping force to make the system "softer", thereby achieving the optimal high-frequency vibration isolation effect, reducing the transmission of noise to the tower, and realizing the function of adaptive damping adjustment. (2) By setting up a pressure balancing component, when in use, the oil pressure sensor keeps monitoring the oil pressure inside the oil tank, and the second solenoid valve remains in a normally closed state. When the oil pressure exceeds the preset threshold, the second solenoid valve opens automatically, the electric cylinder retracts at a constant speed, and pulls the piston to move at a constant speed. Some hydraulic oil enters the balancing chamber along the delivery pipe, the amount of oil in the oil tank decreases, and the oil pressure drops. When the oil pressure sensor senses that the oil pressure inside the oil tank is too low, the second solenoid valve opens, the electric cylinder extends at a constant speed, and pushes the oil in the balancing chamber back into the oil tank through the piston, thereby increasing the oil pressure level and realizing the function of balancing oil pressure to resist extreme loads. (3) By setting up monitoring components, when in use, the gearbox connecting frame is fixed to the outside of the gearbox, and the fixed housing is fixed to the top of the gearbox connecting frame through the fixed base. The up and down movement and vibration of the gearbox can be directly transmitted to the fixed housing. The tilt sensor inside the fixed housing, together with the vibration sensor and acceleration sensor, can collect the vibration amplitude, frequency and direction of the gearbox in real time, providing parameter information support for the adjustment of the solenoid valve and realizing the function of dynamic monitoring of the gearbox. Attached Figure Description
[0015] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a side view of the buffer fixing frame of this utility model; Figure 3 This is an enlarged side view sectional diagram of the buffer fixing frame of this utility model; Figure 4 This is an enlarged side view sectional diagram of the bellows-style outer casing of this utility model; Figure 5This is a partial enlarged cross-sectional view of the balance cavity of this utility model. Figure 6 This is a top view of a partially enlarged cross-sectional structure of the fixed housing of this utility model.
[0016] In the diagram: 1. Gearbox connecting frame; 2. Buffer fixing frame; 3. Oil tank; 4. Buffer assembly; 401. Bellows-style outer casing; 402. Support spring; 403. Rubber compression chamber; 404. First solenoid valve; 5. Connecting pipe; 6. Pressure balancing assembly; 601. Balancing chamber; 602. Electric cylinder; 603. Piston; 604. Delivery pipe; 605. Second solenoid valve; 606. Oil pressure sensor; 7. Microcontroller; 8. Monitoring assembly; 801. Fixed base; 802. Fixed housing; 803. Tilt sensor; 804. Vibration sensor; 805. Accelerometer. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Example: Please refer to Figure 1-6 A vibration buffer support device for a wind turbine gearbox includes a gearbox connecting frame 1, a buffer assembly 4, a pressure balancing assembly 6, and a monitoring assembly 8. Buffer fixing frames 2 are respectively provided on both sides of the gearbox connecting frame 1. Oil tanks 3 are respectively fixedly connected inside the upper and lower ends of the buffer fixing frames 2. Two sets of connecting pipes 5 are arranged crosswise between the two sets of buffer fixing frames 2. A micro controller 7 is fixedly installed on the top of the buffer fixing frame 2. Please see Figure 1-6 A vibration buffer support device for a wind turbine gearbox also includes a buffer assembly 4. The buffer assembly 4 includes two sets of rubber compression chambers 403. The two sets of rubber compression chambers 403 are respectively arranged at the upper and lower ends inside the buffer fixing frame 2. The rubber compression chambers 403 are provided with a bellows-type outer cover 401. The bellows-type outer cover 401 is provided with a support spring 402 inside. A first solenoid valve 404 is fixedly installed between the oil tank 3 and the rubber compression chambers 403. The bellows-type outer casing 401 and the buffer fixing frame 2 are connected by flanges. The bottom end of the support spring 402 is fixedly connected to the bottom end inside the bellows-type outer casing 401. The upper and lower ends of both sides of the gearbox connecting frame 1 are respectively connected to the flanges of the bellows-type outer casing 401. The first solenoid valve 404, the microcontroller 7, and the monitoring component 8 are electrically connected. The damping can be adaptively adjusted while buffering. Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the vibration of the gearbox is transmitted to the bellows-type outer casing 401 through the gearbox connecting frame 1. The upward movement of the gearbox connecting frame 1 compresses the upper rubber compression chamber 403. The rubber compression chamber 403 contracts under pressure, and the hydraulic oil flows back into the oil tank 3. The support spring 402 limits the contraction amplitude of the rubber compression chamber 403 and aids in rebound. The lower rubber compression chamber 403 and the support spring 402 extend synchronously, providing support to both sides of the gearbox connecting frame 1. The microcontroller 7 can quickly determine the current motion state of the gearbox based on the information fed back by the acceleration sensor 805. If a resonance frequency is detected, such as during the start-stop phase, the microcontroller 7 immediately instructs the first solenoid valve 404 to reduce its opening and increase the damping force, rapidly suppressing the resonance amplitude and protecting the structure. If high-frequency meshing vibration is detected during normal operation, the microcontroller 7 instructs the first solenoid valve 404 to increase its opening and reduce the damping force, making the system "softer," thereby achieving optimal high-frequency vibration isolation and reducing noise transmission to the tower.
[0019] The pressure balancing assembly 6 includes a balancing chamber 601, which is fixedly installed outside the oil tank 3. A second solenoid valve 605 is fixedly installed at one end of the oil tank 3. A delivery pipe 604 is fixedly installed between the balancing chamber 601 and the second solenoid valve 605. An electric cylinder 602 is fixedly installed at the rear end of the balancing chamber 601. A piston 603 is fixedly connected to the output end of the electric cylinder 602. An oil pressure sensor 606 is fixedly installed at the other end of the oil tank 3. The interiors of the balancing chamber 601 and the delivery pipe 604 are connected. The electric cylinder 602, the second solenoid valve 605, the oil pressure sensor 606, and the microcontroller 7 are electrically connected to automatically balance the oil pressure. Specifically, such as Figure 1 , Figure 3 and Figure 5 As shown, the oil pressure sensor 606 continuously monitors the oil pressure inside the oil tank 3. The second solenoid valve 605 remains normally closed. When the oil pressure exceeds a preset threshold, the second solenoid valve 605 automatically opens, the electric cylinder 602 retracts at a constant speed, and pulls the piston 603 to move at a constant speed. Some hydraulic oil enters the balance chamber 601 along the delivery pipe 604, reducing the amount of oil in the oil tank 3 and lowering the oil pressure. When the oil pressure sensor 606 senses that the oil pressure inside the oil tank 3 is too low, the second solenoid valve 605 opens, the electric cylinder 602 extends at a constant speed, and the piston 603 pushes the oil in the balance chamber 601 back into the oil tank 3, increasing the oil pressure level.
[0020] The monitoring component 8 includes a fixed base 801, which is fixedly connected to the top of the gearbox connecting frame 1. A fixed housing 802 is welded and fixed to the top of the fixed base 801. An inclination sensor 803 is fixedly installed in the middle position inside the fixed housing 802. A vibration sensor 804 is fixedly installed on the right side inside the fixed housing 802. An acceleration sensor 805 is fixedly installed on the left side inside the fixed housing 802. The vertical center lines of the gearbox connecting frame 1, the fixed base 801, and the fixed housing 802 coincide. The microcontroller 7, the inclination sensor 803, the vibration sensor 804, and the acceleration sensor 805 are electrically connected to facilitate the monitoring of the gearbox's attitude. Specifically, such as Figure 1 and Figure 6 As shown, the up-and-down movement and vibration of the gearbox can be directly transmitted to the fixed housing 802. The tilt sensor 803 inside the fixed housing 802, together with the vibration sensor 804 and the acceleration sensor 805, can collect the vibration amplitude, frequency and direction of the gearbox in real time, providing parameter information support for the adjustment of the solenoid valve.
[0021] Working Principle: In use, the gearbox connecting frame 1 is first fixed to the outside of the gearbox, and its two ends are connected to the flanges of the bellows-type outer cover 401. The vibration of the gearbox is transmitted to the bellows-type outer cover 401 through the gearbox connecting frame 1. When the gearbox connecting frame 1 moves upward, it squeezes the upper rubber compression chamber 403. After being squeezed, the rubber compression chamber 403 contracts, and the hydraulic oil flows back into the oil tank 3. The support spring 402 can limit the contraction amplitude of the rubber compression chamber 403 and help it rebound. The lower rubber compression chamber 403 and the support spring 402 expand and extend synchronously to support both sides of the gearbox connecting frame 1. The microcontroller 7 can quickly determine the current motion state of the gearbox based on the information fed back by the acceleration sensor 805. If the resonance frequency is detected, such as during the start-stop phase, the microcontroller 7 immediately instructs the first solenoid valve 404 to reduce the opening and increase the damping force to quickly suppress the resonance amplitude and protect the structure. When high-frequency meshing vibration is detected, indicating normal operation, the microcontroller 7 instructs the first solenoid valve 404 to increase its opening and reduce the damping force, making the system "softer" and thus achieving optimal high-frequency vibration isolation, reducing noise transmission to the tower. The oil pressure sensor 606 continuously monitors the oil pressure inside the oil tank 3. The second solenoid valve 605 remains normally closed. When the oil pressure exceeds a preset threshold, the second solenoid valve 605 automatically opens, the electric cylinder 602 retracts at a constant speed, and the piston 603 moves at a constant speed. Some hydraulic oil enters the balance chamber 601 along the delivery pipe 604, reducing the oil volume in the oil tank 3 and lowering the oil pressure. When the oil pressure sensor 606 senses that the oil pressure inside the oil tank 3 is too low, the second solenoid valve 605 opens, the electric cylinder 602 extends at a constant speed, and the piston 603 pushes the oil in the balance chamber 601 back into the oil tank 3, increasing the oil pressure level. The gearbox connecting frame 1 is fixed to the outside of the gearbox, and the fixed housing 802 is fixed to the top of the gearbox connecting frame 1 through the fixed base 801. The up-and-down movement and vibration of the gearbox can be directly transmitted to the fixed housing 802. The tilt sensor 803 inside the fixed housing 802, together with the vibration sensor 804 and the acceleration sensor 805, can collect the vibration amplitude, frequency and direction of the gearbox in real time, providing parameter information support for the adjustment of the solenoid valve.
[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A vibration buffer support device for a wind turbine gearbox housing, comprising a gearbox connecting frame (1), a buffer assembly (4), a pressure balancing assembly (6), and a monitoring assembly (8), characterized in that: The gearbox connecting frame (1) is provided with buffer fixing frames (2) on both sides respectively. The buffer fixing frames (2) are fixedly connected to oil tanks (3) at the upper and lower ends respectively. Two sets of connecting pipes (5) are arranged crosswise between the two sets of buffer fixing frames (2). A micro controller (7) is fixedly installed at the top of the buffer fixing frame (2). The buffer assembly (4) includes two sets of rubber compression chambers (403). The two sets of rubber compression chambers (403) are respectively located at the upper and lower ends inside the buffer fixing frame (2). The rubber compression chambers (403) are provided with accordion-style outer covers (401) on the outside. The accordion-style outer covers (401) are provided with support springs (402) inside. A first solenoid valve (404) is fixedly installed between the oil tank (3) and the rubber compression chambers (403).
2. The vibration buffer support device for a wind turbine gearbox as described in claim 1, characterized in that: The accordion-style outer casing (401) and the buffer fixing frame (2) are flange-connected, and the bottom end of the support spring (402) is fixedly connected to the bottom end inside the accordion-style outer casing (401).
3. The vibration buffer support device for a wind turbine gearbox as described in claim 1, characterized in that: The upper and lower ends of the gearbox connecting frame (1) are respectively connected to the flange of the bellows-type outer cover (401), and the first solenoid valve (404), microcontroller (7), and monitoring component (8) are electrically connected.
4. The vibration buffer support device for a wind turbine gearbox as described in claim 1, characterized in that: The pressure balancing assembly (6) includes a balancing chamber (601), which is fixedly installed outside the oil tank (3). A second solenoid valve (605) is fixedly installed at one end of the oil tank (3). A delivery pipe (604) is fixedly installed between the balancing chamber (601) and the second solenoid valve (605). An electric cylinder (602) is fixedly installed at the rear end of the balancing chamber (601). A piston (603) is fixedly connected to the output end of the electric cylinder (602). An oil pressure sensor (606) is fixedly installed at the other end of the oil tank (3).
5. A vibration buffer support device for a wind turbine gearbox as described in claim 4, characterized in that: The balance chamber (601) and the delivery pipe (604) are internally connected, and the electric cylinder (602), the second solenoid valve (605), the oil pressure sensor (606), and the microcontroller (7) are electrically connected.
6. The vibration buffer support device for a wind turbine gearbox as described in claim 1, characterized in that: The monitoring component (8) includes a fixed base (801), which is fixedly connected to the top of the gearbox connecting frame (1). A fixed housing (802) is welded and fixed to the top of the fixed base (801). An inclination sensor (803) is fixedly installed in the middle position inside the fixed housing (802). A vibration sensor (804) is fixedly installed on the right side inside the fixed housing (802). An acceleration sensor (805) is fixedly installed on the left side inside the fixed housing (802). The vertical center lines of the gearbox connecting frame (1), the fixed base (801), and the fixed housing (802) coincide. The microcontroller (7), the inclination sensor (803), the vibration sensor (804), and the acceleration sensor (805) are electrically connected.