Coupling diaphragm fatigue loading test bench for wind generating set

Abstract

The utility model discloses a coupling diaphragm fatigue loading test bench used for a wind generating set, comprising a support assembly, a frame assembly, a tension loading mechanism, an offset loading mechanism and a vertical motion loading mechanism, the tension loading mechanism is installed on the support assembly, and the offset loading mechanism is installed on the frame assembly. The tension loading mechanism is arranged on the support assembly, the movable end of the tension loading mechanism is used for being connected to one end of a coupler diaphragm, the frame assembly is movably connected to the support assembly, and the other end of the coupler diaphragm is connected to the frame assembly, so that the tension loading mechanism is used for providing tension for the coupler diaphragm. The bias loading mechanism and the vertical motion loading mechanism are connected to the frame assembly and are respectively used for driving the frame assembly to swing and vertically lift. Simulating the actual state of the coupling diaphragm in work; meanwhile, the whole structure is compact, safe and reliable, the total power is small, and the device can work for a long time in a severe environment and is easy to operate and maintain.

Description

Technical Field

[0001] The utility model relates to a fatigue loading test bench for a coupling diaphragm of a wind turbine generator set. Background Art

[0002] As a new type of clean energy, wind power has made great contributions to the realization of the country's dual-carbon goal. The wind power coupling, as a key component in the transmission device of a wind turbine generator set, undertakes functions such as transmitting the torque of the gearbox, transmitting loads, compensating for displacements, providing insulation protection, overload protection, and braking. Its performance directly determines the lifespan of the entire wind turbine. However, the existing testing devices for wind power couplings have unstable operation, low efficiency, poor safety, and inconvenient maintenance. Therefore, a coupling with better performance and meeting the operating conditions is a major requirement for wind turbines. The invention purpose of the utility model is to complete sufficient tests on the coupling diaphragm during the prototype development. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies existing in the prior art, and the utility model provides a fatigue loading test bench for a coupling diaphragm of a wind turbine generator set.

[0004] The utility model is realized through the following technical solutions:

[0005] A fatigue loading test bench for a coupling diaphragm of a wind turbine generator set, which includes a support assembly, a frame assembly, a tensile loading mechanism, an offset loading mechanism, and a vertical movement loading mechanism. The tensile loading mechanism is installed on the support assembly, and the movable end of the tensile loading mechanism is used to connect to one end of the coupling diaphragm. The frame assembly is movably connected to the support assembly, and the other end of the coupling diaphragm is connected to the frame assembly, so that the tensile loading mechanism is used to provide tensile force to the coupling diaphragm. The offset loading mechanism and the vertical movement loading mechanism are both connected to the frame assembly and are respectively used to drive the swinging and vertical lifting movements of the frame assembly.

[0006] Furthermore, the fatigue loading test bench for a coupling diaphragm of a wind turbine generator set further includes a bearing seat. The bearing seat is installed on the support assembly, and the frame assembly is rotatably passed through the bearing seat.

[0007] Further, the frame assembly includes a frame body, a lifting member, and at least one vertical member. The frame body is rotatably connected to the bracket assembly. The vertical member is fixedly connected within the frame body. The lifting member is sleeved on the vertical member and can move up and down along the vertical member. Moreover, the lifting member is connected to the coupling diaphragm. The vertical motion loading mechanism is installed on the frame body, and the movable end of the vertical motion loading mechanism is connected to the lifting member and used to drive the lifting member to move. The biasing loading mechanism is installed on the bracket assembly, and the movable end of the biasing loading mechanism is connected to the vertical motion loading mechanism and used to drive the vertical motion loading mechanism to move.

[0008] Further, the biasing loading mechanism is located below the frame body and used to drive the swinging of the vertical motion loading mechanism and the frame body, and the biasing loading mechanism is connected to the bracket assembly by bolts.

[0009] Further, the vertical motion loading mechanism is connected to the bottom of the frame body by bolts.

[0010] Further, the bracket assembly includes a bracket body, a plurality of square steel bars, and a plurality of bottom plates. The frame assembly and the tension loading mechanism are both connected to the left and right ends of the bracket body. The tops of the plurality of square steel bars are all connected to the bracket body, and the bottoms of the plurality of square steel bars are respectively connected to the corresponding plurality of bottom plates.

[0011] Further, the fatigue loading test bench for the coupling diaphragm of a wind turbine generator further includes two tooling flanges. The two tooling flanges are respectively installed at the movable ends of the frame assembly and the tension loading mechanism. The two ends of the coupling diaphragm are respectively connected to the two tooling flanges.

[0012] Further, the tension loading mechanism is connected to the bracket assembly by bolts.

[0013] Further, the fatigue loading test bench for the coupling diaphragm of a wind turbine generator further includes a controller. The controller is electrically connected to the tension loading mechanism, the biasing loading mechanism, and the vertical motion loading mechanism.

[0014] Further, the fatigue loading test bench for the coupling diaphragm of a wind turbine generator further includes a protective cover. The bracket assembly, the frame assembly, the tension loading mechanism, the biasing loading mechanism, and the vertical motion loading mechanism are all located within the protective cover.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The fatigue loading test bench for the coupling diaphragm of a wind turbine generator set of the present utility model. The tensile loading mechanism provides tensile force to the coupling diaphragm, and the offset loading mechanism and the vertical movement loading mechanism respectively provide offset torque and vertical reciprocating movement to the coupling diaphragm, so as to simulate the actual state of the coupling diaphragm during operation. At the same time, the overall structure is compact, safe and reliable, with a small total power, capable of working for a long time in a harsh environment, and easy to operate and maintain. Description of the Drawings

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the fatigue loading test bench for the coupling diaphragm of a wind turbine generator set according to an embodiment of the present utility model.

[0018] Figure 2 It is a front view structural schematic diagram of the fatigue loading test bench for the coupling diaphragm of a wind turbine generator set according to an embodiment of the present utility model.

[0019] Description of the Reference Numerals:

[0020] Bracket assembly 1

[0021] Bracket body 11

[0022] Square steel 12

[0023] Base plate 13

[0024] Frame assembly 2

[0025] Frame body 21

[0026] Vertical member 22

[0027] Lifting member 23

[0028] Tensile loading mechanism 3

[0029] Vertical movement loading mechanism 4

[0030] Offset loading mechanism 5

[0031] Bearing seat 6

[0032] Tooling flange 7

[0033] Coupling diaphragm 10 Detailed Embodiments

[0034] The following descriptions of the embodiments are with reference to the drawings, to exemplify specific embodiments in which the present utility model can be implemented.

[0035] As Figure 1 and Figure 2As shown in the figure, this embodiment discloses a fatigue loading test bench for the coupling diaphragm of a wind turbine. The fatigue loading test bench for the coupling diaphragm of a wind turbine includes a support assembly 1, a frame assembly 2, a tensile loading mechanism 3, an offset loading mechanism 5, and a vertical movement loading mechanism 4. The tensile loading mechanism 3 is installed on the support assembly 1, and the movable end of the tensile loading mechanism 3 is used to connect to one end of the coupling diaphragm 10. The frame assembly 2 is movably connected to the support assembly 1, and the other end of the coupling diaphragm 10 is connected to the frame assembly 2, so that the tensile loading mechanism 3 is used to provide tensile force to the coupling diaphragm 10. The offset loading mechanism 5 and the vertical movement loading mechanism 4 are both connected to the frame assembly 2 and are respectively used to drive the swinging and vertical lifting movements of the frame assembly 2.

[0036] Both the frame assembly 2 and the tensile loading mechanism 3 are installed on the support assembly 1. The support assembly 1 is installed on the support surface and provides a support function, thereby ensuring the reliable operation of the fatigue loading test bench for the coupling diaphragm of a wind turbine. The coupling diaphragm 10 is composed of three diaphragms. The two ends of the coupling diaphragm 10 are respectively connected to the frame assembly 2 and the tensile loading mechanism 3. The tensile loading mechanism 3 provides tensile force to the coupling diaphragm 10, so that the coupling diaphragm 10 is always in a working condition of a fixed tensile force, and a tensile fatigue test is carried out on the coupling diaphragm 10. The offset loading mechanism 5 and the vertical movement loading mechanism 4 respectively provide offset torque and vertical reciprocating movement to the coupling diaphragm 10. The vertical movement loading mechanism 4 is used to provide power to make the frame assembly 2 perform vertical reciprocating movement within a certain stroke, and a vertical movement fatigue test is carried out on the coupling diaphragm 10. At the same time, the offset loading mechanism 5 provides torsion to the frame assembly 2, so that the frame assembly 2 rotates back and forth by a certain angle, and a plane deflection fatigue test is carried out on the coupling diaphragm 10. By adopting tensile loading, vertical movement loading, and offset loading, the test process is consistent with the actual working condition, so as to simulate the actual state of the coupling diaphragm 10 during operation. In this way, the data obtained from the test is closer to the actual operation situation, which is also more conducive to improving the product performance and increasing the reliability of the product. At the same time, the overall structure is compact, safe and reliable, with a small total power, capable of working for a long time in a harsh environment, and easy to operate and maintain.

[0037] The fatigue loading test bench for the coupling diaphragm of a wind turbine further includes a bearing seat 6. The bearing seat 6 is installed on the support assembly 1, and the frame assembly 2 is rotatably passed through the bearing seat 6. The left end of the frame assembly 2 is rotatably passed through the bearing seat 6. There is a bearing in the bearing seat 6. Through the bearing seat 6, the frame assembly 2 is rotatably installed and connected to the support assembly 1, which is convenient for the swinging movement of the support assembly 1. At the same time, the friction resistance is further reduced, ensuring that the equipment runs more stably and has a longer service life.

[0038] The frame component 2 includes a frame body 21, a lifting component 23, and at least one vertical component 22. The frame body 21 is rotatably connected to the bracket component 1. The vertical component 22 is fixedly connected within the frame body 21. The lifting component 23 is sleeved on the vertical component 22 and can move up and down along the vertical component 22. Moreover, the lifting component 23 is connected to the coupling diaphragm 10. The vertical motion loading mechanism 4 is installed on the frame body 21, and the movable end of the vertical motion loading mechanism 4 is connected to the lifting component 23 and is used to drive the lifting component 23 to move. The biasing loading mechanism 5 is installed on the bracket component 1, and the movable end of the biasing loading mechanism 5 is connected to the vertical motion loading mechanism 4 and is used to drive the vertical motion loading mechanism 4 to move.

[0039] The vertical motion loading mechanism 4 is used to provide a driving force and drive the lifting component 23 to perform vertical reciprocating motion up and down, so as to conduct a vertical motion fatigue test on the coupling diaphragm 10. The frame body 21 is rotatably passed through the bearing seat 6. The biasing loading mechanism 5 is used to provide a driving force and drive the vertical motion loading mechanism 4 and the frame body 21 to swing together, so as to conduct a planar deflection fatigue test on the coupling diaphragm 10.

[0040] In this embodiment, the number of the vertical components 22 is two. The two ends of the lifting component 23 are respectively sleeved on the two vertical components 22, with high stability. The vertical component 22 is a cylindrical shaft.

[0041] The biasing loading mechanism 5 is located below the frame body 21 and is used to drive the vertical motion loading mechanism 4 and the frame body 21 to swing. Moreover, the biasing loading mechanism 5 is connected to the bracket component 1 by bolts. This enables the biasing loading mechanism 5 to be located within the bracket component 1 without occupying extra space, making the structure more compact. At the same time, the biasing loading mechanism 5 and the bracket component 1 are detachably installed and connected by bolts, which is very convenient for installation and has a high connection strength. Among them, high-strength 10.9-grade bolts can be used for the installation connection between the biasing loading mechanism 5 and the bracket component 1.

[0042] The vertical motion loading mechanism 4 is connected to the bottom of the frame body 21 by bolts. Installing and connecting the vertical motion loading mechanism 4 to the bottom of the frame body 21 and locating it within the bracket component 1 does not occupy extra space, making the structure more compact. At the same time, the vertical motion loading mechanism 4 and the bracket component 1 are detachably installed and connected by bolts, which is very convenient for installation and has a high connection strength. Among them, high-strength 10.9-grade bolts can be used for the installation connection between the vertical motion loading mechanism 4 and the bracket component 1.

[0043] The support assembly 1 includes a support body 11, a plurality of square steel bars 12, and a plurality of bottom plates 13. The frame assembly 2 and the tensile loading mechanism 3 are both connected to the left and right ends of the support body 11. The tops of the plurality of square steel bars 12 are connected to the support body 11, and the bottoms of the plurality of square steel bars 12 are respectively connected to the plurality of bottom plates 13. After the plurality of square steel bars 12 are welded to the support body 11 and the plurality of bottom plates 13, a frame structure is formed to provide support force for the entire device and withstand the impact loads during the operation of the tensile loading mechanism 3, the vertical movement loading mechanism 4, and the offset loading mechanism 5. At the same time, all structural devices are located on the support assembly 1. The support assembly 1 provides reliable support for the entire test bench, ensures the stable operation of the device, and ensures that the fatigue test of the entire coupling diaphragm 10 can be successfully completed. Among them, the bottom plates 13 are fixed to the support surface by bolts to ensure the strength and stiffness of the test bench, and all connecting bolts are high-strength 10.9-grade bolts.

[0044] The tensile loading mechanism 3 is connected to the support assembly 1 by bolts. The tensile loading mechanism 3 and the support assembly 1 are detachably installed and connected by bolts, which is very convenient for installation and connection and has high connection strength. Among them, high-strength 10.9-grade bolts can be used for the installation and connection between the tensile loading mechanism 3 and the support assembly 1.

[0045] The fatigue loading test bench for the coupling diaphragm of a wind turbine generator also includes two tooling flanges 7. The two tooling flanges 7 are respectively installed at the movable ends of the frame assembly 2 and the tensile loading mechanism 3. The two ends of the coupling diaphragm 10 are respectively connected to the two tooling flanges 7. The tooling flange 7 adopts an integral flange plate design to actually simulate the working state of the coupling diaphragm 10 and ensure that the experimental results are consistent with the actual working conditions on the wind turbine.

[0046] The fatigue loading test bench for the coupling diaphragm of a wind turbine generator also includes a controller. The controller is electrically connected to the tensile loading mechanism 3, the offset loading mechanism 5, and the vertical movement loading mechanism 4. The controller is electrically connected to the tensile loading mechanism 3, the offset loading mechanism 5, and the vertical movement loading mechanism 4 and is respectively used to control the switches and output powers of the tensile loading mechanism 3, the offset loading mechanism 5, and the vertical movement loading mechanism 4, so that the magnitude of the tensile force of the tensile loading mechanism 3, the reciprocating rotation, and the frequency of the reciprocating lifting can be controlled, making the adjustment and control very convenient. At the same time, the purpose of precise control can be achieved.

[0047] In this embodiment, the tensile loading mechanism 3 is installed at the right end of the bracket assembly 1 and fastened by bolts. The tensile loading mechanism 3 uses a hydraulic method to provide power. The tensile loading mechanism 3 is connected by high-pressure hoses, and the control and drive of the tensile loading mechanism 3 are realized through the controller, so as to realize the tensile fatigue test. Among them, the controller can control the pressure and flow rate output by the hydraulic system, automatically control the tensile force of the oil cylinder, and a pressure sensor is set. When the pressure exceeds the limit and the tensile force exceeds the limit, automatic alarm can be realized to ensure the safety of the test process.

[0048] The vertical motion loading mechanism 4 is located at the left end of the bracket assembly 1 and fastened by bolts. The vertical motion loading mechanism 4 uses a hydraulic method to provide power. The vertical motion loading mechanism 4 is connected by high-pressure hoses, and the control and drive of the vertical motion loading mechanism 4 are realized through the controller, so as to realize the vertical motion fatigue test. Among them, through the controller, the pressure and flow rate output by the hydraulic system can be controlled to realize vertical reciprocating motion, and the pressure and flow rate can be automatically controlled to control the stroke and the magnitude of the pushing and pulling forces of the vertical motion. A pressure sensor is set, and when the pressure exceeds the limit and the tensile force exceeds the limit, automatic alarm can be realized to ensure the safety of the test process.

[0049] The offset loading mechanism 5 is installed at the bottom of the bracket assembly 1 and fastened by bolts. The offset loading mechanism 5 uses a pneumatic method to provide power. The offset loading mechanism 5 is connected by air pipes, and the control and drive of the offset loading mechanism 5 are realized through the controller, so as to realize the planar deflection fatigue test. Among them, through the controller, the start and stop of the motor and the on and off of the solenoid valve can be controlled to realize reciprocating rotation by a certain angle, and the pressure and flow rate can be automatically controlled to control the stroke and the magnitude of the pushing and pulling forces of the motion. A pressure sensor is set, and when the pressure exceeds the limit and the tensile force exceeds the limit, automatic alarm can be realized to ensure the safety of the test process.

[0050] The tensile loading mechanism 3 uses a hydraulic system to provide power. The hydraulic system is controlled by a PLC to realize the magnitude of the tensile force, and there is an overload alarm device; the vertical motion loading mechanism 4 also uses a hydraulic system to provide power. The hydraulic system is controlled by a PLC to realize the reciprocating motion of the mechanism, and the frequency of the reciprocating motion can be controlled; the offset loading mechanism 5 uses a pneumatic system to provide power, and the reciprocating rotation of the frame assembly 2 is realized by controlling the pneumatic solenoid valve.

[0051] The fatigue loading test bench for the coupling diaphragm of a wind turbine generator also includes a protective cover. The bracket assembly 1, the frame assembly 2, the tensile loading mechanism 3, the offset loading mechanism 5, and the vertical movement loading mechanism 4 are all located inside the protective cover. The protective cover plays a protective role. It wraps the entire equipment from the bottom to the top of the equipment, ensuring the safety of test personnel or other personnel during equipment operation. Among them, the protective cover can be made of a transparent baffle, which not only prevents personnel from being injured but also can accurately observe the operation status of the equipment. When the test bench runs at a high speed, it improves the safety of the equipment.

[0052] Before the equipment runs, assemble three diaphragms on the tensile loading mechanism 3 and the lifting component 23. When the equipment starts, adjust the loading force, loading frequency, and loading amplitude through the controller, and conduct the experiment according to the test outline. During the experiment process, the protective cover provides protection throughout.

[0053] The fatigue loading test bench for the coupling diaphragm of a wind turbine generator can be treated with overall painting, epoxy zinc-rich primer + mica iron intermediate paint + polyurethane topcoat, with a total thickness of 280um, which can meet the high anti-corrosion salt spray requirements of C5H. After the equipment runs, it is protected by a protective cover. The fatigue loading test bench for the coupling diaphragm of a wind turbine generator of the present utility model has a compact structure, is safe and reliable, has a small total power, can work for a long time in a harsh environment, and is easy to operate and maintain.

[0054] The above-disclosed are only the preferred embodiments of the present utility model. Of course, the scope of the rights of the present utility model cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.

Claims

1. A fatigue loading test bench for the coupling diaphragm of a wind turbine generator set, characterized in that, It includes a bracket assembly, a frame assembly, a tensile loading mechanism, a biasing loading mechanism and a vertical movement loading mechanism. The tensile loading mechanism is installed on the bracket assembly, and the movable end of the tensile loading mechanism is used to connect to one end of the coupling diaphragm. The frame assembly is movably connected to the bracket assembly, and the other end of the coupling diaphragm is connected to the frame assembly, so that the tensile loading mechanism is used to provide tensile force to the coupling diaphragm. The biasing loading mechanism and the vertical movement loading mechanism are both connected to the frame assembly and are respectively used to drive the swinging and vertical lifting movement of the frame assembly.

2. The fatigue loading test bench for the coupling diaphragm of a wind turbine generator set according to claim 1, characterized in that, The fatigue loading test bench for the coupling diaphragm of a wind turbine generator further includes a bearing seat. The bearing seat is installed on the bracket assembly, and the frame assembly is rotatably passed through the bearing seat.

3. The fatigue loading test bench for the coupling diaphragm of a wind turbine generator set according to claim 1, characterized in that, The frame assembly includes a frame body, a lifting member and at least one vertical member. The frame body is rotatably connected to the bracket assembly. The vertical member is fixedly connected inside the frame body. The lifting member is sleeved on the vertical member and can move up and down on the vertical member, and the lifting member is connected to the coupling diaphragm. The vertical movement loading mechanism is installed on the frame body, and the movable end of the vertical movement loading mechanism is connected to the lifting member and is used to drive the lifting member to move. The biasing loading mechanism is installed on the bracket assembly, and the movable end of the biasing loading mechanism is connected to the vertical movement loading mechanism and is used to drive the vertical movement loading mechanism to move.

4. The fatigue loading test bench for the coupling diaphragm of a wind turbine generator set according to claim 3, characterized in that, The biasing loading mechanism is located below the frame body and is used to drive the swinging of the vertical movement loading mechanism and the frame body, and the biasing loading mechanism is connected to the bracket assembly by bolts.

5. The fatigue loading test bench for the coupling diaphragm of a wind turbine generator set according to claim 3, wherein The vertical movement loading mechanism is connected to the bottom of the frame body by bolts.

6. The fatigue loading test bench for the coupling diaphragm of a wind turbine generator set according to claim 1, wherein The bracket assembly includes a bracket body, a plurality of square steels and a plurality of bottom plates. The frame assembly and the tensile loading mechanism are both connected to the left and right ends of the bracket body. The tops of the plurality of square steels are all connected to the bracket body, and the bottoms of the plurality of square steels are respectively connected to the plurality of bottom plates correspondingly.

7. The fatigue loading test bench for the coupling diaphragm of a wind turbine generator set according to claim 1, characterized in that, The fatigue loading test bench for the coupling diaphragm of a wind turbine generator further includes two tooling flanges. The two tooling flanges are respectively installed on the movable ends of the frame assembly and the tensile loading mechanism, and the two ends of the coupling diaphragm are respectively connected to the two tooling flanges.

8. The fatigue loading test bench for the coupling diaphragm of a wind turbine generator set according to claim 1, characterized in that, The tensile loading mechanism is connected to the bracket assembly by bolts.

9. The fatigue loading test bench for the coupling diaphragm of a wind turbine generator set according to claim 1, characterized in that, The fatigue loading test bench for the coupling diaphragm of a wind turbine generator further includes a controller. The controller is electrically connected to the tensile loading mechanism, the biasing loading mechanism and the vertical movement loading mechanism.

10. The fatigue loading test bench for the coupling diaphragm of a wind turbine generator set according to claim 1, characterized in that, The fatigue loading test bench for the coupling diaphragm of a wind turbine generator further includes a protective cover. The bracket assembly, the frame assembly, the tensile loading mechanism, the biasing loading mechanism and the vertical movement loading mechanism are all located inside the protective cover.

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