Torque testing device for wind power generation variable pitch system

Abstract

The utility model relates to a wind power generation variable pitch system torque testing device, which comprises a base, a torque sensor, a bearing seat and a variable pitch motor, the variable pitch motor is arranged at the top of the bearing seat, the bearing seat is arranged at the end part of the top side of the base, and the torque sensor is arranged above the base. The utility model relates to the technical field of variable pitch motor testing. When the torque testing device for the wind power generation variable pitch system is used, a variable pitch motor can be driven to move stably through a positioning piece, then an output shaft of the variable pitch motor moves to a coupling column, the output shaft of the variable pitch motor is inserted into a butt joint hole, and the output shaft is clamped into a key groove through a butt joint block to be limited; and meanwhile, the variable-pitch motor can be in butt joint with the torque sensor quickly, the butt joint efficiency of the variable-pitch motor is improved, and then the torque testing efficiency of the variable-pitch motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pitch motor testing, in particular to a torque testing device for a wind power pitch system. Background Technique

[0002] In wind power generation, huge fan blades are mainly used to drive their rotation through wind force, so as to convert the rotational kinetic energy into electrical energy. In the pitch process, the blades in the wind turbine are mainly driven by a pitch motor to rotate automatically to adjust the angle, so as to control the rotational speed of the fan blades of the wind turbine and achieve the control of the output power of the wind turbine. Before the pitch motor is used in the wind power generation system, it needs to be tested. Different types of wind turbines require different pitch motors. Therefore, it is necessary to test the torque of the pitch motor, mainly to test the transmission situation of the torque under load and whether it meets the actual use performance.

[0003] In the prior art, a pitch motor load testing device for a wind turbine unit proposed in the publication number CN206504862U includes a bottom plate, a left L-shaped support plate, a right L-shaped support plate and a torque sensor. The left L-shaped support plate and the right L-shaped support plate are both fixed on the bottom plate and are symmetrically distributed left and right. Through holes are opened in the middle of the vertical plates of the left L-shaped support plate and the right L-shaped support plate, and a plurality of threaded holes are opened outside the through holes. The torque sensor is used to connect the load brake and the pitch motor to be tested. It has the advantages of simple structure, low cost, convenient implementation and easy control, can greatly reduce the construction cost of the pitch system load testing platform of the wind turbine unit, and can ensure that the test results of the pitch motor are consistent with the actual performance.

[0004] When this application is used, the pitch motor is tested through a torque sensor. However, during the test, it needs to be connected through a plurality of couplings. Therefore, it takes a certain amount of time to install the pitch motor and dock it through the couplings, which takes a certain amount of time and thus reduces the test efficiency of the pitch motor. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a torque testing device for a wind power pitch system, so as to solve the technical problems mentioned in the above background technique.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions:

[0007] A torque testing device for a pitch system of a wind power generation, comprising a base, a torque sensor, a bearing seat and a pitch motor. The pitch motor is arranged on the top of the bearing seat, the bearing seat is arranged at the top side end of the base, the torque sensor is arranged above the base, a docking member is arranged between the torque sensor and the pitch motor, and a positioning member is arranged between the pitch motor and the base;

[0008] The docking member includes a coupling column, a docking spring and a docking block. The coupling column is fixedly installed at one end of the torque sensor close to the pitch motor. A docking hole is opened on one side of the coupling column close to the pitch motor. A number of limiting grooves are opened on the circumferential side wall of the docking hole. The docking spring is fixedly connected with the inner end side wall of the limiting groove. The docking block is fixedly connected with the end of the docking spring. The end of the docking block is arc-shaped. A number of key grooves are opened on the circumferential side of the output shaft of the pitch motor.

[0009] In a preferred example of the present utility model, it can be further configured that: an electric telescopic joint is fixedly installed in the middle of the base, the telescopic end of the electric telescopic joint is fixedly connected with a mounting seat, and the torque sensor is fixedly installed on the top side of the mounting seat.

[0010] In a preferred example of the present utility model, it can be further configured that: the positioning member includes a fixed part and a moving part. The fixed part includes a fixed block. The fixed block is inserted into the top side end of the bearing seat. A threaded hole is opened on the top side of the fixed block. A support rod is threadedly connected in the threaded hole. The top end of the support rod is connected with a lower pressing plate through a bearing.

[0011] In a preferred example of the present utility model, it can be further configured that: two empty slots are opened on the top side of the bearing seat. A double-headed stud is rotatably connected in the empty slots. Clamping plates are threadedly connected at both ends of the double-headed stud. One end of the double-headed stud extends to the outside of the bearing seat.

[0012] In a preferred example of the present utility model, it can be further configured that: the moving part includes a slide rail. The slide rail is fixedly installed at one end of the top side of the base close to the bearing seat. The bearing seat is slidably connected with the slide rail.

[0013] In a preferred example of the present utility model, it can be further configured that: a moving motor is fixedly installed at one side end of the base where the bearing seat is located. The output end of the moving motor is connected with a moving screw rod. The moving screw rod passes through the fixed block and extends into the bearing seat. The moving screw rod is threadedly connected with the bearing seat.

[0014] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0015] 1. The torque testing device for the pitch system of wind power generation can drive the stable movement of the pitch motor through the positioning member during use, so that the output shaft of the pitch motor moves to the coupling column, insert the output shaft of the pitch motor into the docking hole, and limit it by clamping the keyway with the docking block, so as to achieve the purpose of automatic docking and limit. At the same time, it can quickly dock the pitch motor with the torque sensor, improve the docking efficiency of the pitch motor, and then improve the torque testing efficiency of the pitch motor;

[0016] 2. The torque testing device for the pitch system of wind power generation, in order to prevent the pitch motor from shifting in position after the lower pressing plate is positioned, rotate the screw double-headed stud, so that the double-headed stud drives the clamping plates to move towards each other, and then clamp the pitch motor with the clamping plates, further position the pitch motor, correct the angle of the pitch motor, and center the position of the pitch motor, so as to facilitate the output shaft of the pitch motor to be inserted into the docking member for quick docking;

[0017] 3. The torque testing device for the pitch system of wind power generation is provided with a slide rail that allows the bearing seat to slide on the slide rail. After the pitch motor is placed, the bearing seat can be pushed at this time, so that the bearing seat moves on the slide rail, and then drives the pitch motor to move to the docking member, so that the docking member is docked with the output shaft of the pitch motor, achieving the effect of quick docking. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the overall structure of the torque testing device for the pitch system of wind power generation of the present invention.

[0020] Figure 2 It is a schematic diagram of the external structure of the docking member of the torque testing device for the pitch system of wind power generation of the present invention.

[0021] Figure 3 It is a schematic diagram of the internal structure of the coupling column of the torque testing device for the pitch system of wind power generation of the present invention.

[0022] Figure 4 It is a schematic diagram of the structure at the pitch motor of the torque testing device for the pitch system of wind power generation of the present invention.

[0023] In the figure, 1 is the base; 2 is the torque sensor; 3 is the bearing seat; 4 is the pitch motor; 5 is the docking member; 6 is the positioning member; 7 is the coupling column; 8 is the docking spring; 9 is the docking block; 10 is the docking hole; 11 is the limiting groove; 12 is the keyway; 13 is the electric telescopic joint; 14 is the mounting seat; 15 is the fixing block; 16 is the threaded hole; 17 is the support rod; 18 is the lower pressing plate; 19 is the empty groove; 20 is the stud; 21 is the clamping plate; 22 is the slide rail; 23 is the moving motor; 24 is the moving screw. Specific embodiments

[0024] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] Embodiment:

[0026] Refer to Figures 1-4 , a torque testing device for a pitch system of a wind power generator disclosed by the present utility model, comprising a base 1, a torque sensor 2, a bearing seat 3 and a pitch motor 4. The pitch motor 4 is arranged at the top of the bearing seat 3, the bearing seat 3 is arranged at the top side end of the base 1, the torque sensor 2 is arranged above the base 1, a docking member 5 is arranged between the torque sensor 2 and the pitch motor 4, and a positioning member 6 is arranged between the pitch motor 4 and the base 1;

[0027] The docking member 5 includes a coupling column 7, a docking spring 8 and a docking block 9. The coupling column 7 is fixedly installed at one end of the torque sensor 2 close to the pitch motor 4. A docking hole 10 is opened on one side of the coupling column 7 close to the pitch motor 4. A number of limiting grooves 11 are opened on the peripheral side wall of the docking hole 10. The docking spring 8 is fixedly connected with the inner end side wall of the limiting groove 11. The docking block 9 is fixedly connected with the end of the docking spring 8. The end of the docking block 9 is arc-shaped. A number of keyways 12 are opened on the circumferential side of the output shaft of the pitch motor 4.

[0028] In this embodiment, when in use, the pitch motor 4 to be measured is placed on the bearing seat 3, and then the pitch motor 4 is driven by the positioning member 6 to move to the coupling column 7. At this time, the output shaft of the pitch motor 4 is inserted into the limiting hole, and the keyway 12 on the pitch motor 4 moves to the limiting groove 11. At the same time, the outer peripheral wall of the end of the output shaft of the pitch motor 4 will also push the docking block 9 to move into the limiting groove 11, and will also squeeze the docking spring 8. After the keyway 12 is aligned with the docking block 9, at this time, the docking spring 8 will drive the docking block 9 to insert into the keyway 12 through the reaction force after being squeezed, thus completing the docking of the output shaft of the pitch motor 4. After docking, it can be braked in cooperation with the load brake in the prior art, and the torque sensor 2 is set for cooperative testing;

[0029] After the pitch motor 4 is tested, the pitch motor 4 can be pulled by the set positioning member 6 at this time, so that the output shaft of the pitch motor 4 moves in the initial direction. When the movement of the pitch motor 4 drives the output shaft to move, the side wall of the keyway 12 on the output shaft will gradually push the arc surface at the bottom of the docking block 9, and then push the docking block 9 to move into the limiting groove 11, so as to facilitate the pulling out of the output shaft of the pitch motor 4, achieving the effect of being able to quickly dock and disconnect the pitch motor 4 from the torque sensor 2.

[0030] It should be noted in this embodiment that the number of keyways 12 on the pitch motor 4 corresponds to the number of keyways 12 opened on the pitch motor 4 in the prior art, which is determined according to the actual situation. The number of docking blocks 9 and docking grooves used in the docking member 5 needs to be the same as the number of keyways 12 on the motor output shaft, and the interval between two adjacent docking grooves needs to be the same as the interval between the keyways 12 on the pitch motor 4. If the number of keyways 12 on the pitch motor 4 is one, the number of docking grooves in the docking member 5 should be no less than two. After the output rotating shaft is inserted into the docking hole 10, the docking block 9 can be quickly moved into the keyway 12 by rotating the output shaft to ensure quick docking.

[0031] In a further preferred embodiment of the present utility model, as Figure 1 shown, an electric telescopic joint 13 is fixedly installed in the middle of the base 1, the telescopic end of the electric telescopic joint 13 is fixedly connected to a mounting seat 14, and the torque sensor 2 is fixedly installed on the top side of the mounting seat 14.

[0032] In this embodiment, the set electric telescopic joint 13 can be telescoped to drive the lifting of the mounting seat 14 and the torque sensor 2. When facing pitch motors 4 with different heights, the electric telescopic joint 13 drives the torque sensor 2 and the coupling column 7 to move to an appropriate position, facilitating the quick docking of the pitch motor 4 and improving the test efficiency of the pitch motor 4.

[0033] In a further preferred embodiment of the present utility model, as Figure 1 shown, the positioning member 6 includes a fixed part and a moving part. The fixed part includes a fixed block 15. The fixed block 15 is inserted into the top end side of the bearing seat 3. A threaded hole 16 is opened on the top side of the fixed block 15. A support rod 17 is threadedly connected in the threaded hole 16. The top end of the support rod 17 is connected to a lower pressing plate 18 through a bearing.

[0034] In this embodiment, after the pitch motor 4 is placed, the support can be rotated at this time. The support can be lifted and lowered in the threaded hole 16. By rotating the support rod 17, the lower pressing plate 18 is lowered, and finally the lower pressing plate 18 can be driven to press on the top side of the pitch motor 4, thereby positioning the pitch motor 4 and preventing the pitch motor 4 from moving during detection.

[0035] In a further preferred embodiment of the present utility model, as Figure 1 shown, two empty slots 19 are provided on the top side of the bearing seat 3. A double-headed stud 20 is rotatably connected in the empty slots 19. Both ends of the double-headed stud 20 are threadedly connected with clamping plates 21, and one end of the double-headed stud 20 extends to the outside of the bearing seat 3.

[0036] In this embodiment, in order to prevent the pitch motor 4 from shifting in position after the lower pressing plate 18 is positioned, the double-headed stud 20 of the screw is rotated, so that the double-headed stud 20 drives the clamping plates 21 to move towards each other. Subsequently, the pitch motor 4 is clamped by the clamping plates 21, further positioning the pitch motor 4, correcting the angle of the pitch motor 4, and centering the position of the pitch motor 4, so as to facilitate the output shaft of the pitch motor 4 to be inserted into the docking member 5 for quick docking.

[0037] In a further preferred embodiment of the present utility model, as Figure 1 shown, the moving part includes a slide rail 22. The slide rail 22 is fixedly installed at one end of the top side of the base 1 close to the bearing seat 3. The bearing seat 3 is slidably connected with the slide rail 22.

[0038] In this embodiment, the provided slide rail 22 allows the bearing seat 3 to slide on the slide rail 22. After the pitch motor 4 is placed, the bearing seat 3 can be pushed at this time, so that the bearing seat 3 moves on the slide rail 22, thereby driving the pitch motor 4 to move to the docking member 5, so that the docking member 5 is docked with the output shaft of the pitch motor 4, achieving the effect of quick docking.

[0039] In a further preferred embodiment of the present utility model, as Figure 1 shown, a moving motor 23 is fixedly installed at one end of the base 1 on one side of the bearing seat 3. The output end of the moving motor 23 is connected with a moving screw 24. The moving screw 24 passes through the fixed block 15 and extends into the bearing seat 3. The moving screw 24 is threadedly connected with the bearing seat 3.

[0040] In this embodiment, the provided moving motor 23 can drive the rotation of the moving screw 24. When the moving screw 24 rotates, it can drive the bearing seat 3 to slide on the slide rail 22. When the moving motor 23 drives the moving screw 24 to rotate, it is more stable than manual adjustment, and thus can more stably make the output shaft of the pitch motor 4 quickly dock with the docking member 5, improving the accuracy during docking.

[0041] The embodiments of this specific implementation manner are all preferred embodiments of the present utility model, and do not limit the protection scope of the present utility model accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A wind power generation pitch system torque test device, comprising a base (1), a torque sensor (2), a bearing seat (3) and a pitch motor (4), wherein the pitch motor (4) is arranged on the top of the bearing seat (3), and the bearing seat (3) is arranged on the top side end of the base (1), characterized in that: The torque sensor (2) is arranged above the base (1), a docking piece (5) is arranged between the torque sensor (2) and the variable pitch motor (4), and a positioning piece (6) is arranged between the variable pitch motor (4) and the base (1); The docking component (5) includes a coupling column (7), a docking spring (8), and a docking block (9). The coupling column (7) is fixedly installed on one end of the torque sensor (2) close to the variable pitch motor (4). A docking hole (10) is provided on the side of the coupling column (7) close to the variable pitch motor (4). A number of limiting grooves (11) are provided on the circumferential side wall of the docking hole (10). The docking spring (8) is fixedly connected to the inner end side wall of the limiting groove (11). The docking block (9) is fixedly connected to the end of the docking spring (8). The end of the docking block (9) is arc-shaped. A number of key grooves (12) are provided on the circumferential side of the output shaft of the variable pitch motor (4).

2. A wind power generation variable pitch system torque testing device according to claim 1, characterized in that: An electric telescopic joint (13) is fixedly mounted in the middle of the base (1), a telescopic end of the electric telescopic joint (13) is fixedly connected to a mounting seat (14), and the torque sensor (2) is fixedly mounted on the top side of the mounting seat (14).

3. A wind power generation variable pitch system torque testing device according to claim 1, characterized in that: The positioning member (6) includes a fixed portion and a movable portion, the fixed portion includes a fixed block (15), the fixed block (15) is inserted into the top end side of the bearing seat (3), a threaded hole (16) is provided on the top side of the fixed block (15), a support rod (17) is connected to the threaded inner portion of the threaded hole (16), and the top end of the support rod (17) is connected to a lower pressure plate (18) via a bearing.

4. A wind power generation variable pitch system torque testing device according to claim 3, characterized in that: Two empty slots (19) are provided on the top side of the bearing seat (3), and a stud bolt (20) is rotatably connected in the empty slot (19). Both ends of the stud bolt (20) are threadedly connected to a clamping plate (21), and one end of the stud bolt (20) extends to the outside of the bearing seat (3).

5. A wind power generation variable pitch system torque testing device according to claim 3, characterized in that: The moving part comprises a slide rail (22), and the slide rail (22) is fixedly mounted on one end of the top side of the base (1) close to the bearing seat (3), and the bearing seat (3) is slidably connected to the slide rail (22).

6. A torque testing device for a wind power generation variable pitch system according to claim 5, characterized in that: A moving motor (23) is fixedly mounted on one end of the base (1) located on one side of the bearing seat (3); an output end of the moving motor (23) is connected to a moving screw (24); the moving screw (24) passes through the fixed block (15) and extends into the bearing seat (3); the moving screw (24) is threadedly connected to the bearing seat (3).

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