Coupling of wind generating set and experiment table thereof

Abstract

The invention relates to the technical field of couplings, in particular to a wind generating set coupler and an experiment table thereof.The input connecting assembly comprises a plurality of connecting rods, a limiting ring, a compression spring, a plurality of supporting arms, a plurality of connecting blocks and a first friction disc, the connecting rods are fixed to the input end half coupler, the limiting ring is fixed to one side of the connecting rods, and the compression spring is fixed to the other side of the connecting blocks; the multiple supporting arms are rotationally arranged on the input end half coupling, the multiple connecting blocks are rotationally arranged on the multiple supporting arms and are in sliding connection with the first friction disc, and the compression spring is arranged between the first friction disc and the input end half coupling; the output connecting assembly comprises a second friction disc and a rotating ring, the second friction disc is fixed to the output end half coupler, and the rotating ring is fixed to one side of the second friction disc and located in a groove formed by the limiting ring and the connecting rod. Therefore, high-efficiency power transmission is guaranteed, and good stability and reliability are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of couplings, and in particular to a coupling of a wind turbine generator set and a test bench thereof. Background Art

[0002] The coupling in a wind turbine is a key component that connects the generator and the gearbox (or direct drive system). Its main function is to transmit torque between rotating machinery and ensure that power is transmitted smoothly and efficiently from the wind rotor to the generator. The coupling must be designed to withstand high torque and dynamic loads while maintaining reliability and durability under harsh environmental conditions.

[0003] The existing coupling directly connects the input-end half coupling and the output-end half coupling, which is easy to cause damage to the generator after an unexpected impact occurs. Summary of the invention

[0004] The purpose of the present invention is to provide a wind turbine coupling and a test bench thereof, which are intended to ensure high-efficiency power transmission and have good stability and reliability.

[0005] To achieve the above-mentioned objectives, in a first aspect, the present invention provides a coupling for a wind turbine generator set, comprising an input-end half-coupling and an output-end half-coupling, and also comprising an input connection assembly and an output connection assembly, wherein the input connection assembly comprises a plurality of connecting rods, a limit ring, a clamping spring, a plurality of support arms, a plurality of connecting blocks and a first friction disk, wherein the plurality of connecting rods are fixed to the input-end half-coupling, the limit ring is fixed to one side of the plurality of connecting rods, the plurality of support arms are rotatably arranged on the input-end half-coupling, the plurality of connecting blocks are rotatably arranged on the plurality of support arms and are slidably connected to the first friction disk, and the clamping spring is arranged between the first friction disk and the input-end half-coupling; the output connection assembly comprises a second friction disk and a rotating ring, the second friction disk is fixed to the output-end half-coupling, the rotating ring is fixed to one side of the second friction disk, and is located in a groove formed by the limit ring and the connecting rod.

[0006] Wherein, the limiting ring comprises a limiting ring body, a plurality of fixing bolts and a surface bearing, the limiting ring body is fixed to the plurality of connecting rods by means of the plurality of fixing bolts, and the surface bearing is arranged between the limiting ring body and the rotating ring.

[0007] Wherein, the input connection assembly further comprises a plastic pin, and the plastic pin is used to connect the input end half coupling and the output end half coupling, and the plastic pin will be disconnected when the force applied to the plastic pin exceeds a threshold value.

[0008] Wherein, the output connection assembly also includes a brake disc, two clamps and a driving unit, the brake disc is fixed to one side of the second friction disc, the two clamps are rotatably arranged on both sides of the brake disc, and the driving unit is used to drive the two clamps to rotate.

[0009] Wherein, the driving unit includes a slider, two push rods, a driving cylinder and a return spring. The slider is slidably arranged above the brake disc, the output end of the driving cylinder is connected to the slider, one end of the two push rods is rotatably connected to the slider, the other end of the two push rods is rotatably connected to the clamp, and the return spring is arranged between the driving cylinder and the slider.

[0010] Wherein, the output connection assembly further includes a cooling fan, and the cooling fan is arranged on one side of the clamp.

[0011] Wherein, the output connection assembly further comprises a guide ring, which is fixedly connected to the output end half coupling and is located at one side of the output end half coupling.

[0012] Wherein, the wind turbine generator set coupling further comprises a buffer structure, and the buffer structure is arranged between the input end half coupling and the output end half coupling.

[0013] In a second aspect, the present invention also provides a test bench for a wind turbine coupling, comprising a base, a support platform, a driver and a vibration detection unit, wherein the support platform is fixedly connected to the base and is located above the base, the wind turbine coupling is placed on the support platform, the driver is used to drive the wind turbine coupling to rotate, and the vibration detection unit is used to detect vibration conditions during the rotation of the wind turbine coupling.

[0014] The invention discloses a coupling for a wind power generator set and a test bench thereof. The coupling mainly consists of two parts: an input end half coupling and an output end half coupling, which correspond to a receiving end and a transmitting end of power respectively.

[0015] The input connection assembly includes several key components: multiple connecting rods, a limit ring, a compression spring, multiple support arms, multiple connection blocks and a first friction disc. These components work together to ensure smooth transmission of power. Specifically, multiple connecting rods are fixed to the input half-coupling, and the limit ring is installed on one side of these connecting rods to limit the range of motion. Multiple support arms can rotate around the input half-coupling, and each support arm is provided with a rotatable connection block. These connection blocks form a sliding connection with the first friction disc, allowing a certain degree of relative movement to adapt to slight deviations during operation. In addition, a compression spring is provided between the first friction disc and the input half-coupling, the purpose of which is to ensure close contact between the first friction disc and the second friction disc by applying appropriate preload, thereby reducing energy loss and improving transmission efficiency.

[0016] The output connection assembly is relatively simple, mainly including the second friction disc and the rotating ring. The second friction disc is directly fixed on the output half coupling, while the rotating ring is installed on one side of the second friction disc and is located inside the groove formed by the limit ring and the connecting rod. This design can not only ensure the effective connection between the output half coupling and the input end, but also realize the efficient transmission of power from the input end to the output end through the interaction of the friction disc. At the same time, the existence of the rotating ring helps to maintain the dynamic balance of the entire system and reduce the vibration and wear caused by imbalance.

[0017] In summary, the design of this wind turbine coupling cleverly combines multiple structural features, which not only ensures high-efficiency power transmission, but also has good stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural diagram of a wind turbine generator coupling of the present invention.

[0020] Figure 2 It is a right side structural diagram of a wind turbine generator coupling of the present invention.

[0021] Figure 3 The present invention is a cross-sectional structural diagram of a wind turbine coupling.

[0022] Figure 4 yes Figure 3 A partial enlargement of detail A.

[0023] Figure 5 It is a structural diagram of a test bench of a wind turbine coupling of the present invention.

[0024] Input end half coupling 101, output end half coupling 102, connecting rod 103, limit ring 104, compression spring 105, support arm 106, connecting block 107, first friction disc 108, second friction disc 109, rotating ring 110, limit ring body 111, fixing bolt 112, surface bearing 113, plastic pin 114, brake disc 115, clamp 116, drive unit 117, slider 118, push rod 119, drive cylinder 120, return spring 121, cooling fan 122, guide ring 123, rubber ring 124, damping block 125, base 201, support platform 202, driver 203, vibration detection unit 204. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0027] First embodiment

[0028] See also Figure 1 to Figure 4The present invention provides a wind turbine coupling, comprising an input-end half coupling 101 and an output-end half coupling 102, and also comprising an input connection assembly and an output connection assembly, wherein the input connection assembly comprises a plurality of connecting rods 103, a stop ring 104, a compression spring 105, a plurality of support arms 106, a plurality of connection blocks 107 and a first friction disk 108, wherein the plurality of connecting rods 103 are fixed to the input-end half coupling 101, the stop ring 104 is fixed to one side of the plurality of connecting rods 103, and the plurality of support arms 106 are rotatably arranged on the input-end half coupling 101. On the coupling 101, multiple connecting blocks 107 are rotatably set on multiple supporting arms 106 and are slidably connected to the first friction disk 108. The clamping spring 105 is set between the first friction disk 108 and the input end half coupling 101; the output connecting assembly includes a second friction disk 109 and a rotating ring 110, the second friction disk 109 is fixed to the output end half coupling 102, and the rotating ring 110 is fixed to one side of the second friction disk 109 and is located in the groove formed by the limit ring 104 and the connecting rod 103.

[0029] In this embodiment, the coupling is mainly composed of two parts: an input end half coupling 101 and an output end half coupling 102, which correspond to the receiving end and the transmitting end of the power respectively.

[0030] The input connection assembly includes a plurality of key components: a plurality of connecting rods 103, a stop ring 104, a compression spring 105, a plurality of support arms 106, a plurality of connection blocks 107 and a first friction disc 108. These components work together to ensure the smooth transmission of power. Specifically, a plurality of connecting rods 103 are fixed to the input end half coupling 101, and the stop ring 104 is installed on one side of these connecting rods 103 to limit the range of motion. A plurality of support arms 106 can rotate around the input end half coupling 101, and each support arm 106 is provided with a rotatable connection block 107, which forms a sliding connection with the first friction disc 108, allowing a certain degree of relative movement, so as to adapt to slight deviations during the working process. In addition, a compression spring 105 is provided between the first friction disc 108 and the input end half coupling 101, the purpose of which is to ensure the close contact between the first friction disc 108 and the second friction disc 109 by applying an appropriate preload, thereby reducing energy loss and improving transmission efficiency.

[0031] The output connection assembly is relatively simple, mainly including a second friction disc 109 and a rotating ring 110. The second friction disc 109 is directly fixed on the output half coupling 102, while the rotating ring 110 is installed on one side of the second friction disc 109 and is located inside the groove formed by the limit ring 104 and the connecting rod 103. Such a design can not only ensure the effective connection between the output half coupling 102 and the input end, but also realize the efficient transmission of power from the input end to the output end through the interaction of the friction discs. At the same time, the existence of the rotating ring 110 helps to maintain the dynamic balance of the entire system and reduce the vibration and wear caused by imbalance.

[0032] In summary, the design of this wind turbine coupling cleverly combines multiple structural features, which not only ensures high-efficiency power transmission, but also has good stability and reliability.

[0033] The limiting ring 104 includes a limiting ring body 111 , a plurality of fixing bolts 112 and a surface bearing 113 . The limiting ring body 111 is fixed to the plurality of connecting rods 103 by the plurality of fixing bolts 112 . The surface bearing 113 is arranged between the limiting ring body 111 and the rotating ring 110 .

[0034] The limiting ring body 111 is firmly fixed to the connecting rod 103 by a plurality of fixing bolts 112 to ensure stability during the entire working process. The surface bearing 113 is arranged between the limiting ring body 111 and the rotating ring 110 to reduce the friction between the two and ensure smooth and stable rotation. This design not only improves the transmission efficiency of the system, but also effectively prolongs the service life of the coupling.

[0035] The input connection assembly further comprises a plastic pin 114, which is used to connect the input half coupling 101 and the output half coupling 102. The plastic pin 114 will be disconnected when the force applied to it exceeds a threshold.

[0036] The main function of the plastic pin 114 is to connect the input half coupling 101 and the output half coupling 102. When the system is subjected to a large external force impact, the external force will first overcome the friction of the friction disk, and the remaining force will be transmitted to the plastic pin 114, so that the plastic pin 114 will automatically break when the force exceeds the predetermined threshold, thereby protecting the entire wind turbine generator set from more serious damage. This design reflects the high attention to equipment safety and reliability, and can provide an effective protection mechanism in extreme situations.

[0037] The output connection assembly also includes a brake disc 115, two clamps 116 and a drive unit 117. The brake disc 115 is fixed to one side of the second friction disc 109. The two clamps 116 are rotatably arranged on both sides of the brake disc 115. The drive unit 117 is used to drive the two clamps 116 to rotate.

[0038] The brake disc 115 is fixed on one side of the second friction disc 109 and fits closely therewith. Two clamps 116 are rotatably arranged on both sides of the brake disc 115. Their main function is to brake quickly when necessary to prevent unnecessary rotation of the output half coupling 102. The drive unit 117 is the core component that controls the movement of the two clamps 116. By accurately controlling the rotation of the clamps 116, effective management and adjustment of the output half coupling 102 are achieved.

[0039] In summary, the design of this wind turbine coupling not only takes into account the need for efficient power transmission, but also fully considers the safety and reliability of the system. Through the ingenious design of the limit ring 104, the plastic pin 114, the brake disc 115 and other components, the entire system can perform well in various working conditions, providing strong support for the development of wind power generation technology.

[0040] The driving unit 117 includes a slider 118, two push rods 119, a driving cylinder 120 and a return spring 121. The slider 118 is slidably arranged above the brake disc 115, the output end of the driving cylinder 120 is connected to the slider 118, one end of the two push rods 119 is rotatably connected to the slider 118, and the other end of the two push rods 119 is rotatably connected to the clamp 116, and the return spring 121 is arranged between the driving cylinder 120 and the slider 118.

[0041] The slider 118 is one of the core components of the driving unit 117, and is slidably disposed above the brake disc 115. The motion trajectory of the slider 118 is generally a straight line, ensuring that it can move forward and backward smoothly under the push of the driving cylinder 120.

[0042] The driving cylinder 120 is the power source of the driving unit 117, and its output end is connected to the slider 118. When the driving cylinder 120 receives a braking signal, it will quickly extend or retract to push the slider 118 to move along a predetermined trajectory.

[0043] One end of the two push rods 119 is rotatably connected to the slider 118, and the other end is rotatably connected to the clamp 116. This design allows the linear motion of the slider 118 to be converted into the rotational motion of the clamp 116. The length and angle of the push rods 119 are calculated to ensure that when the slider 118 moves, the clamp 116 can evenly apply braking force to avoid brake failure or damage due to uneven force.

[0044] The return spring 121 is disposed between the driving cylinder 120 and the slider 118, and its main function is to help the slider 118 to quickly return to its original position when the driving cylinder 120 is retracted. The elastic force of the return spring 121 needs to be moderate, which can ensure that the slider 118 quickly returns to its original position after the driving cylinder 120 is retracted, but will not cause additional impact to the system due to excessive elastic force.

[0045] The design of the drive unit 117 not only ensures the fast and reliable braking process, but also ensures the fast reset after the brake is released through the design of the reset spring 121. The entire system can respond quickly in an emergency and effectively protect the safe operation of the wind turbine. At the same time, the precise coordination and reasonable design of the various components also greatly improve the overall performance and service life of the system.

[0046] The output connection assembly further includes a heat dissipation fan 122 , and the heat dissipation fan 122 is disposed on one side of the clamp 116 .

[0047] The main function of the cooling fan 122 is to provide effective heat dissipation for the heat generated by the clamp 116 and the brake disc 115 during the braking process, so as to prevent the components from being damaged or the performance being degraded due to excessive temperature.

[0048] The output connection assembly further includes a guide ring 123 , which is fixedly connected to the output end half coupling 102 and is located at one side of the output end half coupling 102 .

[0049] The output connection assembly further includes a guide ring 123, which is fixedly connected to the output half coupling 102 and is located on one side of the output half coupling 102. The main function of the guide ring 123 is to ensure that the rotating ring 110 maintains accurate centering during movement, reduce friction and wear, and improve the stability and life of the system.

[0050] The wind turbine coupling further comprises a buffer structure, which is arranged between the input-end half coupling 101 and the output-end half coupling 102 .

[0051] The wind turbine coupling also includes a buffer structure, which is arranged between the input half coupling 101 and the output half coupling 102. The main function of the buffer structure is to absorb and alleviate axial impact and vibration caused by wind fluctuations or other external factors, and protect the coupling and its connected mechanical parts from damage.

[0052] The buffer structure includes a rubber ring 124, a damping block 125 and an elastic member. The rubber ring 124 has an L-shaped groove. The rubber ring 124 is arranged between the limit ring 104 and the input end half coupling 101. The damping block 125 is slidably arranged in the L-shaped groove. The elastic member is arranged between the damping block 125 and the rubber ring 124.

[0053] The rubber ring 124 has a unique L-shaped groove design. The shape and size of the L-shaped groove are carefully designed to ensure that the damping block 125 can be accommodated and sufficient sliding space can be provided. The rubber ring 124 is made of a highly elastic and weather-resistant rubber material, and can maintain good absorption and impact reduction performance under environmental conditions with small axial impact.

[0054] The damping block 125 is slidably disposed in the L-shaped groove of the rubber ring 124. The design of the damping block 125 enables it to slide freely in the L-shaped groove when subjected to a large impact, so that it can respond quickly and absorb energy when subjected to an impact. The damping block 125 is usually made of a high-density, high-damping coefficient material, such as a special polymer or a metal alloy. These materials can generate a large damping force when subjected to an impact, and effectively absorb and dissipate energy. The elastic member is disposed between the damping block 125 and the rubber ring 124. This arrangement enables the elastic member to act directly on the damping block 125 to provide the necessary restoring force.

[0055] Working principle: When the input half coupling 101 is impacted or vibrated, the impact force is first transmitted to the rubber ring 124. The high elasticity of the rubber ring 124 can initially absorb a portion of the energy. Subsequently, the impact force is transmitted to the damping block 125 through the rubber ring 124, and the damping block 125 slides in the L-shaped groove to further absorb and dissipate energy. The elastic member provides the restoring force of the damping block 125 to ensure that the damping block 125 can be quickly reset after the impact.

[0056] Second embodiment

[0057] See also Figure 5 The present invention also provides a test bench for a wind turbine coupling, comprising a base 201, a support platform 202, a driver 203 and a vibration detection unit 204, wherein the support platform 202 is fixedly connected to the base 201 and is located above the base 201, the wind turbine coupling is placed on the support platform 202, the driver 203 is used to drive the wind turbine coupling to rotate, and the vibration detection unit 204 is used to detect vibration conditions during the rotation of the wind turbine coupling.

[0058] In this embodiment, the base 201 is made of high-strength steel or cast iron, has good rigidity and stability, and can withstand large loads and impacts. The size of the base 201 is designed to be large enough to ensure the stability of the entire experimental table and prevent shaking or tilting during the experiment. The support table 202 is fixedly connected to the base 201 by multiple high-strength bolts to ensure that it will not loosen during the experiment.

[0059] The core component of the driver 203 is a high-performance motor that can provide stable torque and speed to simulate actual working conditions. The motor is connected to the coupling through a reducer. The function of the reducer is to convert the high speed of the motor into a low speed suitable for coupling testing to ensure the accuracy of the test.

[0060] The vibration detection unit 204 detects the vibration of an object by capturing the elastic waves generated when the object is deformed by force through acoustic emission technology. The elastic wave data is connected to the data acquisition system through a data line to record and analyze the vibration data in real time. The data acquisition system is equipped with professional display and analysis software that can display the vibration waveform and spectrum in real time to help engineers perform detailed analysis and diagnosis.

[0061] The design of the wind turbine coupling test bench can not only comprehensively test and evaluate the performance of the coupling, but also timely discover potential problems, providing a scientific basis for product improvement and optimization. Through the synergistic effect of the base 201, the support platform 202, the driver 203 and the vibration detection unit 204, the accuracy and reliability of the experimental results are ensured, providing strong support for the development of wind power generation technology.

[0062] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A wind turbine coupling, comprising an input half coupling and an output half coupling, characterized in that: It also includes an input connection assembly and an output connection assembly, wherein the input connection assembly includes a plurality of connecting rods, a stop ring, a clamping spring, a plurality of support arms, a plurality of connection blocks and a first friction disk, wherein the plurality of connecting rods are fixed to the input end half coupling, the stop ring is fixed to one side of the plurality of connecting rods, the plurality of support arms are rotatably arranged on the input end half coupling, the plurality of connection blocks are rotatably arranged on the plurality of support arms and are slidably connected to the first friction disk, and the clamping spring is arranged between the first friction disk and the input end half coupling; The output connection assembly includes a second friction disk and a rotating ring, wherein the second friction disk is fixed to the output end half coupling, and the rotating ring is fixed to one side of the second friction disk and is located in a groove formed by the limiting ring and the connecting rod.

2. A wind turbine coupling as claimed in claim 1, characterized in that: The limiting ring comprises a limiting ring body, a plurality of fixing bolts and a surface bearing. The limiting ring body is fixed to the plurality of connecting rods through the plurality of fixing bolts. The surface bearing is arranged between the limiting ring body and the rotating ring.

3. A wind turbine coupling as claimed in claim 2, characterized in that: The input connection assembly further comprises a plastic pin, which is used to connect the input-end half coupling and the output-end half coupling, and the plastic pin will be disconnected when the force applied to it exceeds a threshold.

4. A wind turbine coupling as claimed in claim 3, characterized in that: The output connection assembly also includes a brake disc, two clamps and a drive unit. The brake disc is fixed to one side of the second friction disc. The two clamps are rotatably arranged on both sides of the brake disc. The drive unit is used to drive the two clamps to rotate.

5. A wind turbine coupling as claimed in claim 4, characterized in that: The driving unit includes a slider, two push rods, a driving cylinder and a return spring. The slider is slidably arranged above the brake disc, the output end of the driving cylinder is connected to the slider, one end of the two push rods is rotatably connected to the slider, the other end of the two push rods is rotatably connected to the clamp, and the return spring is arranged between the driving cylinder and the slider.

6. A wind turbine coupling as claimed in claim 5, characterized in that: The output connection assembly further includes a heat dissipation fan, and the heat dissipation fan is arranged on one side of the clamp.

7. A wind turbine coupling as claimed in claim 6, characterized in that: The output connection assembly also includes a guide ring, which is fixedly connected to the output end half coupling and is located on one side of the output end half coupling.

8. A wind turbine coupling as claimed in claim 7, characterized in that: The wind turbine coupling further comprises a buffer structure, and the buffer structure is arranged between the input end half coupling and the output end half coupling.

9. A test bench for a wind turbine coupling, used for a wind turbine coupling according to any one of claims 1 to 8, characterized in that: It includes a base, a support platform, a driver and a vibration detection unit. The support platform is fixedly connected to the base and is located above the base. The wind turbine coupling is placed on the support platform. The driver is used to drive the wind turbine coupling to rotate. The vibration detection unit is used to detect vibration conditions during the rotation of the wind turbine coupling.

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