Comprehensive testing device for variable pitch driver

Abstract

The invention relates to the technical field of variable-pitch drivers, and discloses a comprehensive test device for a variable-pitch driver, which comprises a test board, a limiting baffle is arranged at one end of the upper end surface of the test board, a first guide rail is arranged on the inner side of the limiting baffle and located on the upper end surface of the test board, and a bearing positioning mechanism is arranged on the first guide rail. A driver body is placed on the bearing positioning mechanism, a mounting groove is formed in the end, away from the limiting baffle, of the testing table, and a temperature and humidity testing box is arranged on the testing table through the mounting groove. According to the comprehensive testing device for the variable-pitch driver, the driver body is conveniently installed and fixed and a fastening nut is conveniently taken down through the bearing positioning mechanism, a bearing plate and the driver body placed at the upper end of the bearing plate can be pushed into the temperature and humidity testing box through a first guide rail and a second guide rail, and the reliability of the driver body in a limit environment is simulated; the driver body does not need to be carried, and time and labor are saved.

Description

Technical Field

[0001] The present invention relates to the technical field of variable pitch drives, in particular to a comprehensive testing device for variable pitch drives. Background Art

[0002] At present, wind power generation has become the third largest main energy source in my country after coal-fired power and hydropower. The pitch drive is a core component in the wind power system. With the development of wind power, the reliability requirements for the pitch drive have also been greatly improved.

[0003] In order to ensure the safe use of the pitch drive, it is necessary to conduct comprehensive tests on the pitch drive. When testing different aspects of the pitch drive, different testing equipment needs to be used. As a result, the pitch drive needs to be frequently moved, which is time-consuming and labor-intensive, and increases the labor intensity of the staff. In addition, the pitch drive is prone to falling and bumping during transportation, causing damage. Therefore, it is necessary to provide a comprehensive testing device for the pitch drive to solve the above problems. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a comprehensive testing device for a variable pitch drive, which solves the problems mentioned in the above background.

[0005] The present invention provides the following technical solution: a comprehensive test device for a variable pitch drive, comprising a test bench, a limit baffle being provided at one end of the upper end surface of the test bench, a guide rail being provided inside the limit baffle and located on the upper end surface of the test bench, a support and positioning mechanism being provided on the guide rail, a drive body being placed on the support and positioning mechanism, a mounting groove being provided at one end of the test bench away from the limit baffle, a temperature and humidity test chamber being provided on the test bench through the mounting groove, cross bars being provided on both sides of the test bench through fixed blocks, a plurality of mounting plates being slidably provided on the cross bars, and a test device being provided on the upper end surface of the mounting plates; The supporting positioning mechanism includes a supporting plate and a limiting slide, the limiting slide is arranged on the lower end surface of the supporting plate, the supporting plate is slidably connected to the No. 1 guide rail through the limiting slide, and the driver body is placed on the upper end surface of the supporting plate.

[0006] Preferably, the supporting positioning mechanism also includes a positioning rod, a fastening nut and a vertical frame plate. The positioning rod is arranged at the middle end of the supporting plate close to the limiting baffle. The front end of the outer surface of the positioning rod is provided with an external thread. The lower end of the limiting baffle is provided with a positioning hole that cooperates with the positioning rod. The front end of the positioning rod passes through the positioning hole and is threadedly connected to the fastening nut through the external thread.

[0007] Preferably, the vertical frame plate is arranged on the upper end surface of the support plate away from the end of the positioning rod, the upper end of the vertical frame plate is threadedly connected with a clamping screw, one end of the clamping screw is provided with a pressure block, the end of the clamping screw away from the pressure block passes through the vertical frame plate and is provided with a No. 1 knob, and the upper end of the outer surface of the limit baffle is provided with a placement box.

[0008] Preferably, a programmable DC power supply is provided on the upper surface of a mounting plate on one side of the test bench, and a power analyzer is provided on the upper surface of a mounting plate on the other side of the test bench.

[0009] Preferably, an inlet and outlet are provided on the front of the temperature and humidity test box, a movable door is provided at the inlet and outlet of the temperature and humidity test box, a cylinder is provided on the upper end surface of the temperature and humidity test box close to the movable door, and a top connecting plate is provided at the output end of the cylinder.

[0010] Preferably, a vertical rod is provided on the upper end surface of the movable door, the upper end of the vertical rod is connected to the top connecting plate, and a second guide rail corresponding to the first guide rail is provided on the inner bottom surface of the temperature and humidity test chamber.

[0011] Preferably, buffer assemblies are provided at both ends of the lower surface of the test bench, and a walking mechanism is provided at the lower end of the buffer assembly. The walking mechanism includes a support frame, walking wheels and support screws. The support frame is provided below the test bench, and the walking wheels are rotatably provided at the lower ends of both sides of the support frame.

[0012] Preferably, the support screw is threadedly connected to the lower wall of the support frame, a support block is provided at the lower end of the support screw, and the upper end of the support screw passes through the lower wall of the support frame and is provided with a No. 2 knob.

[0013] Preferably, the buffer assembly includes a top plate, a limiting slide rod, a limiting disk and a bottom plate, the top plate is arranged on the lower end surface of the test bench, the limiting slide rod is arranged at both ends of the lower end surface of the top plate, the bottom plate can be slidably mounted on the outer surface of the limiting slide rod, the upper wall of the support frame is provided with a through hole, the lower end of the limiting slide rod passes through the through hole in the upper wall of the support frame and is connected to the limiting disk.

[0014] Preferably, a spring is sleeved on the outer surface of the limiting slide rod, the upper end of the spring is connected to the top plate, and the lower end of the spring is connected to the bottom plate. Rubber columns are provided at both ends of the upper surface of the support frame, and the upper end of the rubber column is connected to the test bench.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The comprehensive test device for the variable pitch drive is provided with a supporting positioning mechanism. When the drive body to be tested is placed on the upper surface of the supporting plate, the supporting plate is pushed to move along the No. 1 guide rail toward the side close to the limit baffle. When the positioning rod at the front end of the supporting plate passes through the positioning hole, the fastening nut is tightened to effectively ensure the stability of the supporting plate on the No. 1 guide rail. When the position of the supporting plate is stable, the clamping screw can be driven to rotate and move toward the side close to the limit baffle by turning the No. 1 knob. During the movement of the clamping screw, the clamping block will be pushed to move synchronously, and then the clamping block can cooperate with the limit baffle to achieve effective clamping of the drive body and ensure the stable position of the drive body.

[0016] 2. The comprehensive test device for the pitch drive can effectively simulate grid voltage fluctuations and measure input power, power factor, etc. by setting a programmable DC power supply and a power analyzer. At the same time, there are several mounting panels, which can also be used to install other test equipment as needed; By setting up a temperature and humidity test chamber, the cylinder can effectively push the movable door upward and open through the top connecting plate and the vertical rod, and then rotate it in the opposite direction and remove the fastening nut. The support plate and the driver body placed on its upper end can be pushed into the temperature and humidity test chamber through the No. 1 guide rail and the No. 2 guide rail. The set temperature and humidity test chamber can effectively simulate the reliability of the driver body in extreme environments, and there is no need to carry the driver body, saving time and effort.

[0017] 3. The comprehensive test device for the variable pitch drive is provided with a walking mechanism and a support frame, which can be effectively used to support the test bench and is convenient for installing walking wheels. The walking wheels are convenient for moving the comprehensive test device for the variable pitch drive to effectively adjust the position. The operation is simple, time-saving and labor-saving. When the position of the comprehensive test device for the variable pitch drive is moved to the appropriate position, the support screw is driven to rotate and move downward by turning the No. 2 knob. During the process of rotating and moving the support screw downward, the support block is driven to move downward synchronously and contact the ground, thereby effectively ensuring the position stability of the comprehensive test device for the variable pitch drive during testing. By providing a buffer component, when the test device encounters a bumpy road during movement, the temperature and humidity test chamber on the upper surface of the test bench and the test equipment such as the programmable DC power supply and power analyzer installed on the upper surface of the mounting plate will vibrate up and down. During the vibration downward movement of the test equipment, the spring and rubber column will be squeezed by the test bench. The spring and rubber column are squeezed and contracted, which can effectively buffer the external force, avoid damage to the internal structure of the test equipment, and extend the service life of the test equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the comprehensive testing device for the pitch drive of the present invention; Figure 2This is the second overall structural diagram of the comprehensive testing device for the pitch drive of the present invention; Figure 3 is a cross-sectional view of a comprehensive testing device for a pitch drive according to the present invention; Figure 4 It is a structural schematic diagram of the test bench of the present invention; Figure 5 This is a schematic diagram of the connection structure between the buffer assembly and the walking mechanism of the present invention; Figure 6 It is a structural schematic diagram of the supporting and positioning mechanism of the present invention; Figure 7 For the present invention Figure 3 A magnified schematic diagram of the structure at center A; Figure 8 For the present invention Figure 5 A magnified schematic diagram of the structure at B in the middle.

[0019] Figure: 1. Test bench; 101. Mounting slot; 2. Stop plate; 201. Positioning hole; 3. Guide rail No. 1; 4. Support and positioning mechanism; 401. Support plate; 402. Positioning rod; 403. Fastening nut; 404. Vertical frame; 405. Pressing screw; 406. Pressing block; 407. Stop slide; 5. Driver body; 6. Temperature and humidity test chamber; 601. Movable door; 602. Guide rail No. 2; 603. Cylinder; 604. Vertical rod; 605 , top connecting plate; 7, cross bar; 701, mounting plate; 8, programmable DC power supply; 9, power analyzer; 10, placement box; 11, buffer assembly; 1101, top plate; 1102, limit slide; 1103, limit disk; 1104, spring; 1105, bottom plate; 1106, rubber column; 12, walking mechanism; 1201, support frame; 1202, walking wheel; 1203, support screw; 1204, support block; 1205, knob No. 2. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-8A comprehensive test device for a variable pitch drive comprises a test bench 1, a limit baffle 2 is provided at one end of the upper surface of the test bench 1, a guide rail 3 is provided on the inner side of the limit baffle 2 and located on the upper surface of the test bench 1, a supporting and positioning mechanism 4 is provided on the guide rail 3, a driver body 5 is placed on the supporting and positioning mechanism 4, a mounting groove 101 is provided at one end of the test bench 1 away from the limit baffle 2, a temperature and humidity test chamber 6 is provided on the test bench 1 through the mounting groove 101, cross bars 7 are provided on both sides of the test bench 1 through fixed blocks, a plurality of mounting plates 701 are slidably provided on the cross bars 7, and a test device is provided on the upper surface of the mounting plate 701; The supporting positioning mechanism 4 includes a supporting plate 401 and a limiting slide 407. The limiting slide 407 is arranged on the lower end surface of the supporting plate 401. The supporting plate 401 is slidingly connected to the No. 1 guide rail 3 through the limiting slide 407, and the driver body 5 is placed on the upper end surface of the supporting plate 401.

[0022] Among them; the supporting positioning mechanism 4 also includes a positioning rod 402, a fastening nut 403 and a vertical frame plate 404. The positioning rod 402 is arranged at the middle end of the supporting plate 401 close to the limit baffle 2. The front end of the outer surface of the positioning rod 402 is provided with an external thread, and the lower end of the limit baffle 2 is provided with a positioning hole 201 that cooperates with the positioning rod 402. The front end of the positioning rod 402 passes through the positioning hole 201 and is threadedly connected with the fastening nut 403 through the external thread. When the driver body 5 to be tested is placed on the upper end surface of the supporting plate 401, the supporting plate 401 is pushed to move along the No. 1 guide rail 3 to the side close to the limit baffle 2. After the positioning rod 402 at the front end of the supporting plate 401 passes through the positioning hole 201, the fastening nut 403 is tightened, thereby effectively ensuring the stability of the supporting plate 401 on the No. 1 guide rail 3.

[0023] When the cam 406 is in the closed position, the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam 406 is in the closed position, and the cam By setting up a programmable DC power supply 8 and a power analyzer 9, grid voltage fluctuations can be effectively simulated, and input power, power factor, etc. can be measured. At the same time, there are several mounting plates 701, which can also be used to install other test equipment as needed.

[0024] Among them, the temperature and humidity test box 6 is provided with an inlet and outlet on the front side, and a movable door 601 is provided at the inlet and outlet of the temperature and humidity test box 6. The upper end surface of the temperature and humidity test box 6 near the movable door 601 is provided with a cylinder 603, and the output end of the cylinder 603 is provided with a top connecting plate 605. The upper end surface of the movable door 601 is provided with a vertical rod 604, and the upper end of the vertical rod 604 is connected to the top connecting plate 605. The bottom surface of the interior of the temperature and humidity test box 6 is provided with a second guide rail 602 corresponding to the first guide rail 3. Through the operation of the cylinder 603, the movable door 601 can be effectively pushed up and opened by the top connecting plate 605 and the vertical rod 604, and then the fastening nut 403 is rotated in the opposite direction and the fastening nut 403 is removed, and the supporting plate 401 and the driver body 5 placed on its upper end can be pushed into the interior of the temperature and humidity test box 6 through the first guide rail 3 and the second guide rail 602. The temperature and humidity test box 6 set up can effectively simulate the reliability of the driver body 5 in an extreme environment, and there is no need to carry the driver body 5, which saves time and effort.

[0025] Among them, the two ends of the lower end surface of the test bench 1 are provided with a buffer assembly 11, the lower end of the buffer assembly 11 is provided with a walking mechanism 12, the walking mechanism 12 includes a support frame 1201, a walking wheel 1202 and a support screw 1203, the support frame 1201 is provided below the test bench 1, the walking wheel 1202 is rotatably provided at the lower ends of both sides of the support frame 1201, the support screw 1203 is threadedly connected to the lower wall of the support frame 1201, the lower end of the support screw 1203 is provided with a support block 1204, the upper end of the support screw 1203 passes through the lower wall of the support frame 1201 and is provided with a second knob 1205, by setting There is a support frame 1201, which can be effectively used to support the test bench 1 and is convenient for installing the walking wheel 1202. The walking wheel 1202 is set to facilitate moving the variable pitch drive integrated test device for effective adjustment of the position. The operation is simple, time-saving and labor-saving. When the position of the variable pitch drive integrated test device is moved to a suitable position, the support screw 1203 is driven to rotate and move downward by turning the No. 2 knob 1205. During the rotation and downward movement of the support screw 1203, the support block 1204 will be driven to move downward synchronously and contact the ground, thereby effectively ensuring the stability of the position of the integrated test device for the variable pitch drive during testing.

[0026] Among them, the buffer assembly 11 includes a top plate 1101, a limiting slide 1102, a limiting disk 1103 and a bottom plate 1105. The top plate 1101 is arranged on the lower end surface of the test bench 1, the limiting slide 1102 is arranged at both ends of the lower end surface of the top plate 1101, and the bottom plate 1105 is slidably sleeved on the outer surface of the limiting slide 1102. A through hole is opened on the upper wall of the support frame 1201, and the lower end of the limiting slide 1102 passes through the through hole on the upper wall of the support frame 1201 and is connected to the limiting disk 1103. A spring 1104 is sleeved on the outer surface of the limiting slide 1102. The upper end of the spring 1104 is connected to the top plate 1101, and the lower end of the spring 1104 is connected to the bottom plate 110 5 connection, rubber columns 1106 are provided at both ends of the upper surface of the support frame 1201, and the upper ends of the rubber columns 1106 are connected to the test bench 1. When the test device encounters a bumpy road during movement, the temperature and humidity test chamber 6 on the upper surface of the test bench 1 and the test equipment such as the programmable DC power supply 8 and the power analyzer 9 installed on the upper surface of the mounting plate 701 will vibrate up and down. During the vibration downward movement of the test equipment, the spring 1104 and the rubber column 1106 will be squeezed by the test bench 1. The spring 1104 and the rubber column 1106 are squeezed and contracted, which can effectively buffer the external force, avoid damage to the internal structure of the test equipment, and extend the service life of the test equipment.

[0027] Working principle: when the driver body 5 to be tested is placed on the upper surface of the support plate 401, the support plate 401 is pushed to move along the No. 1 guide rail 3 toward the side close to the limit baffle 2. After the positioning rod 402 at the front end of the support plate 401 passes through the positioning hole 201, the fastening nut 403 is tightened, thereby effectively ensuring the stability of the support plate 401 on the No. 1 guide rail 3. When the position of the support plate 401 is stable, the clamping screw 405 can be driven to rotate and move toward the side close to the limit baffle 2 by turning the No. 1 knob. During the movement of the clamping screw 405, the pressure block 406 will be pushed to move synchronously, and then the pressure block 406 can cooperate with the limit baffle 2 to achieve effective clamping of the driver body 5 and ensure the stable position of the driver body 5.

[0028] Furthermore, by setting up a programmable DC power supply 8 and a power analyzer 9, the voltage fluctuation of the power grid can be effectively simulated, and the input power, power factor, etc. can be measured. At the same time, several mounting plates 701 are provided, and can also be used to install other test equipment as needed. Through the operation of the cylinder 603, the movable door 601 can be effectively pushed up and opened through the top connecting plate 605 and the vertical rod 604, and then rotated in the opposite direction and the fastening nut 403 is removed. The support plate 401 and the driver body 5 placed on its upper end can be pushed into the temperature and humidity test chamber 6 through the No. 1 guide rail 3 and the No. 2 guide rail 602. The set temperature and humidity test chamber 6 can effectively simulate the reliability of the driver body 5 in extreme environments, and there is no need to carry the driver body 5, saving time and effort.

[0029] Furthermore, by providing a support frame 1201, it can be effectively used to support the test bench 1, and it is convenient to install the walking wheel 1202. The walking wheel 1202 is provided to facilitate the movement of the variable pitch drive and the effective adjustment of the position of the integrated test device. The operation is simple, time-saving and labor-saving. When the variable pitch drive is moved to the appropriate position using the integrated test device, the support screw 1203 is driven to rotate downward by turning the second knob 1205. During the rotation and downward movement of the support screw 1203, the support block 1204 is driven to move downward synchronously and contact the ground, thereby effectively ensuring the variable pitch drive. The comprehensive test device for the propeller drive is used to check the stability of its position during testing. When the test device encounters a bumpy road surface during movement, the temperature and humidity test box 6 on the upper surface of the test bench 1 and the test equipment such as the programmable DC power supply 8 and the power analyzer 9 installed on the upper surface of the mounting plate 701 will vibrate up and down. During the vibration downward process of the test equipment, the spring 1104 and the rubber column 1106 will be squeezed by the test bench 1. The spring 1104 and the rubber column 1106 are squeezed and contracted, which can effectively buffer the external force, avoid damage to the internal structure of the test equipment, and extend the service life of the test equipment.

[0030] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A comprehensive testing device for a pitch drive, characterized in that: The invention comprises a test bench (1), wherein a limit baffle (2) is provided at one end of the upper surface of the test bench (1), a guide rail (3) is provided inside the limit baffle (2) and located on the upper surface of the test bench (1), a supporting positioning mechanism (4) is provided on the guide rail (3), a driver body (5) is placed on the supporting positioning mechanism (4), a mounting groove (101) is provided at one end of the test bench (1) away from the limit baffle (2), a temperature and humidity test chamber (6) is provided on the test bench (1) through the mounting groove (101), cross bars (7) are provided on both sides of the test bench (1) through fixed blocks, a plurality of mounting plates (701) are slidably provided on the cross bars (7), and a test device is provided on the upper surface of the mounting plates (701); The supporting positioning mechanism (4) comprises a supporting plate (401) and a limiting slide (407), wherein the limiting slide (407) is arranged on the lower end surface of the supporting plate (401), the supporting plate (401) is slidably connected to the first guide rail (3) via the limiting slide (407), and the driver body (5) is placed on the upper end surface of the supporting plate (401).

2. A comprehensive testing device for a pitch drive according to claim 1, characterized in that: The supporting positioning mechanism (4) further comprises a positioning rod (402), a fastening nut (403) and a vertical frame plate (404); the positioning rod (402) is arranged at the middle end of the supporting plate (401) near the limiting baffle (2); an external thread is provided at the front end of the outer surface of the positioning rod (402); a positioning hole (201) cooperating with the positioning rod (402) is provided at the lower end of the limiting baffle (2); the front end of the positioning rod (402) passes through the positioning hole (201) and is threadedly connected to the fastening nut (403) via the external thread.

3. A comprehensive testing device for a pitch drive according to claim 2, characterized in that: The vertical frame plate (404) is arranged on the upper end surface of the support plate (401) away from the positioning rod (402), the upper end of the vertical frame plate (404) is threadedly connected to a clamping screw (405), one end of the clamping screw (405) is provided with a pressure block (406), the end of the clamping screw (405) away from the pressure block (406) passes through the vertical frame plate (404) and is provided with a No. 1 knob, and the upper end of the outer surface of the limit baffle (2) is provided with a placement box (10).

4. A comprehensive testing device for a pitch drive according to claim 1, characterized in that: A programmable DC power supply (8) is provided on the upper surface of a mounting plate (701) on one side of the test bench (1), and a power analyzer (9) is provided on the upper surface of a mounting plate (701) on the other side of the test bench (1).

5. The comprehensive testing device for a pitch drive according to claim 1, characterized in that: An inlet and outlet are provided on the front of the temperature and humidity test box (6), and a movable door (601) is provided at the inlet and outlet of the temperature and humidity test box (6). A cylinder (603) is provided on the upper end surface of the temperature and humidity test box (6) on the side close to the movable door (601), and a top connecting plate (605) is provided at the output end of the cylinder (603).

6. A comprehensive testing device for a pitch drive according to claim 5, characterized in that: The upper surface of the movable door (601) is provided with a vertical rod (604), the upper end of the vertical rod (604) is connected to the top connecting plate (605), and the inner bottom surface of the temperature and humidity test box (6) is provided with a second guide rail (602) corresponding to the first guide rail (3).

7. A comprehensive testing device for a pitch drive according to claim 1, characterized in that: Buffer components (11) are provided at both ends of the lower surface of the test bench (1), and a walking mechanism (12) is provided at the lower end of the buffer component (11). The walking mechanism (12) comprises a support frame (1201), walking wheels (1202) and a support screw (1203). The support frame (1201) is provided below the test bench (1), and the walking wheels (1202) are rotatably provided at the lower ends of both sides of the support frame (1201).

8. A comprehensive testing device for a pitch drive according to claim 7, characterized in that: The support screw (1203) is threadedly connected to the lower wall of the support frame (1201), the lower end of the support screw (1203) is provided with a support block (1204), and the upper end of the support screw (1203) passes through the lower wall of the support frame (1201) and is provided with a second knob (1205).

9. A comprehensive testing device for a pitch drive according to claim 8, characterized in that: The buffer assembly (11) includes a top plate (1101), a limiting slide bar (1102), a limiting disk (1103) and a bottom plate (1105), wherein the top plate (1101) is arranged on the lower end surface of the test bench (1), the limiting slide bar (1102) is arranged at both ends of the lower end surface of the top plate (1101), and the bottom plate (1105) is slidably mounted on the outer surface of the limiting slide bar (1102), and a through hole is provided on the upper wall of the support frame (1201), and the lower end of the limiting slide bar (1102) passes through the through hole on the upper wall of the support frame (1201) and is connected to the limiting disk (1103).

10. A comprehensive testing device for a pitch drive according to claim 9, characterized in that: The outer surface of the limiting slide rod (1102) is provided with a spring (1104), the upper end of the spring (1104) is connected to the top plate (1101), and the lower end of the spring (1104) is connected to the bottom plate (1105). Rubber columns (1106) are provided at both ends of the upper surface of the support frame (1201), and the upper end of the rubber column (1106) is connected to the test bench (1).

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