Test device

Abstract

The utility model relates to a test device, which comprises a base comprising a base body and a support frame, the base body comprises a bottom support surface and a top support surface, and the support frame is arranged on the top support surface; the mounting assembly is arranged on the supporting frame, the mounting assembly comprises a rotating shaft and a frame body arranged on the rotating shaft, the rotating shaft is supported and rotationally connected to the supporting frame, the axis of the rotating shaft is obliquely arranged relative to the bottom supporting surface, and the frame body is provided with a connecting interface matched with the variable pitch device to be tested; and the driving piece is arranged on the base and connected with the mounting assembly so as to drive the mounting assembly to rotate relative to the base by taking the rotating shaft as a rotating shaft. The test equipment provided by the embodiment of the utility model can provide an adaptive rotating environment for the to-be-tested variable pitch device in the integrated hydraulic variable pitch, and ensures the reliability of the adaptability test of the to-be-tested variable pitch device in the rotating environment.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power testing, in particular to a testing device. Background Art

[0002] Integrated hydraulic pitch control integrates the hydraulic station, accumulator, cooler, fuel tank and other pitch control devices in conventional hydraulic pitch control into the hub. The hub is a rotating environment. Whether any of the above pitch control devices can meet the use requirements in a rotating environment is an important measure of the success of the integrated hydraulic pitch control design. It is necessary to conduct a rotating environment adaptability test that fully simulates the operating state of the wind turbine before the integrated hydraulic pitch control is hung.

[0003] Therefore, there is an urgent need for a testing device that can provide a rotating environment for the pitch control components in the integrated hydraulic pitch control. Utility Model Content

[0004] The embodiment of the utility model provides a testing device, which can provide an adaptive rotating environment for a pitch device to be tested in an integrated hydraulic pitch control system, thereby ensuring the reliability of the adaptability test of the pitch device to be tested in the rotating environment.

[0005] On the one hand, according to an embodiment of the utility model, a test device is proposed, including: a base, including a seat body and a support frame, the seat body including a bottom support surface and a top support surface, and the support frame is arranged on the top support surface; an installation assembly, arranged on the support frame, the installation assembly includes a rotating shaft and a frame body arranged on the rotating shaft, the rotating shaft is supported and rotatably connected to the support frame, the axis of the rotating shaft is inclined relative to the bottom support surface, and the frame body has a connection interface that matches the variable pitch device to be tested; a driving member, arranged on the base and connected to the installation assembly to drive the installation assembly to rotate relative to the base with the rotating shaft as the rotation axis.

[0006] According to one aspect of the embodiment of the utility model, the driving member includes a servo motor and a transmission part, and the transmission part is connected between the servo motor and the rotating shaft to drive the installation component to rotate relative to the frame body.

[0007] According to one aspect of the embodiment of the utility model, the angle between the axial direction of the rotating shaft and the bottom supporting surface is in the range of 6° to 10°.

[0008] According to one aspect of the embodiment of the utility model, at least one of an accumulator mounting seat, a first motor pump group mounting seat, a second motor pump group mounting seat, a positive pressure fuel tank mounting seat and a cooler mounting seat is provided on the frame body.

[0009] According to one aspect of the embodiment of the utility model, an accumulator mounting seat is provided on the frame body, and the angle between the extending direction of the accumulator mounting seat and the axial direction of the rotating shaft is 25° to 45°.

[0010] According to one aspect of an embodiment of the utility model, the testing equipment also includes a loading component, which includes a telescopic mechanism and a moving block connected to the telescopic mechanism. The loading component is configured to be connected to a positive pressure fuel tank installed on a positive pressure fuel tank mounting seat to obtain oil and drive the moving block to reciprocate along a straight line trajectory.

[0011] According to one aspect of the embodiment of the utility model, the testing equipment also includes an auxiliary support, on which a guide rail is provided, and the telescopic mechanisms are arranged in pairs on the auxiliary support, the paired telescopic mechanisms are symmetrically distributed relative to the moving block, and the moving block slides in cooperation with the guide rail.

[0012] According to one aspect of the embodiment of the utility model, the testing equipment further includes a control cabinet, and the control cabinet is electrically connected to the driving member and the telescopic mechanism.

[0013] According to one aspect of an embodiment of the utility model, the support frame includes a first bracket and a second bracket spaced apart on the seat body, the rotating shaft is movably connected to the first bracket and the second bracket respectively, the frame body is located between the first bracket and the second bracket, and the driving member is connected to one of the first bracket and the second bracket.

[0014] According to one aspect of an embodiment of the utility model, the seat body includes a first seat body, a second seat body and a connecting frame that are arranged at intervals. The height of the first seat body is higher than the height of the second seat body. The connecting frame is inclined and connected to the first seat body and the second seat body respectively. The top support surface is formed on the connecting frame, and the bottom support surface is formed on the first seat body and the second seat body.

[0015] According to a test device provided by an embodiment of the utility model, the test device includes a base, a mounting assembly and a driving member, the bottom support surface of the base can be supported on the ground or a test table, the support frame is arranged on the top support surface of the base, the rotating shaft of the mounting assembly is supported and rotatably connected to the support frame, and the frame body thereof has a connection interface that matches the variable pitch device to be tested, which can be used to connect with the variable pitch device to be tested. By arranging the mounting assembly on the support frame, the mounting assembly can be supported at a certain height and a gap is formed between it and the top support surface, and when the driving member drives the mounting assembly to rotate relative to the support frame, interference with the seat body is avoided, and the smoothness of the rotation of the mounting assembly relative to the support frame is ensured. Since the rotating shaft of the mounting assembly rotatably connected to the support frame is arranged at an angle relative to the bottom support surface, the rotation environment of the hub can be better simulated, and the reliability of the test data of each variable pitch device to be tested can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the structure of a wind turbine generator set;

[0018] Figure 2 It is an axonometric diagram of a test device according to an embodiment of the utility model;

[0019] Figure 3 It is a front view of a testing device according to an embodiment of the utility model;

[0020] Figure 4 It is a partial structural schematic diagram of a testing device according to an embodiment of the utility model.

[0021] in:

[0022] 100-transmission system; 200-tower; 300-nacelle; 400-impeller; 410-hub; 420-blade; 500-generator;

[0023] 10- base;

[0024] 11-seat body; 11a-bottom support surface; 11b-top support surface; 111-first seat body; 112-second seat body; 113-connecting frame;

[0025] 12-support frame; 121-first support frame; 122-second support frame;

[0026] 20-installation assembly; 21-rotating shaft; 22-frame body;

[0027] 30-driving member; 31-servo motor; 32-transmission unit;

[0028] 40-loading component; 41-telescopic mechanism; 42-moving block;

[0029] 50- auxiliary support; 51- guide rail;

[0030] 60-accumulator mounting seat; 70-positive pressure fuel tank mounting seat; 80-cooler mounting seat;

[0031] X-axis direction; Y-height direction.

[0032] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0033] The features and exemplary embodiments of various aspects of the utility model will be described in detail below. In the detailed description below, many specific details are proposed in order to provide a comprehensive understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without the need for some of these specific details. The following description of the embodiment is only to provide a better understanding of the utility model by illustrating an example of the utility model. In the drawings and the following description, at least part of the known structures and technologies are not shown in order to avoid unnecessary ambiguity to the utility model; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0034] The directional words appearing in the following description are all directions shown in the figure, and do not limit the specific structure of the test equipment of the utility model. In the description of the utility model, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0035] like Figure 1 As shown, an embodiment of the present application provides a wind turbine generator set, including a wind turbine foundation, a tower 200, a nacelle 300, a generator 500, a transmission system 100 and an impeller 400. The tower 200 is connected to the wind turbine foundation, the nacelle 300 is arranged at the top of the tower 200, the generator 500 is arranged in the nacelle 300, the impeller 400 includes a hub 410 and a plurality of blades 420 respectively connected to the hub 410 through a pitch system, and the hub 410 of the impeller 400 is connected to the rotor of the generator 500 through the transmission system 100. When wind force acts on the blades 420, the impeller 400 can drive the rotor of the generator 500 to rotate relative to the stator through the transmission system 100, so as to convert wind energy into electrical energy, thereby meeting the power generation requirements of the wind turbine generator set.

[0036] In a wind turbine generator set, its variable pitch system can change the angle of attack of the airflow to the blade by adjusting the angle of the blade 420, thereby changing the aerodynamic force obtained by the wind turbine generator set, so that the wind turbine generator set outputs according to the designed output power. Therefore, the variable pitch system plays a vital role in the wind turbine generator set. Its variable pitch system includes a hydraulic station, an accumulator, a cooler fuel tank and other variable pitch devices integrated into the hub 410. The hub 410 is a rotating environment. Whether any of the above variable pitch devices can meet the use requirements in a rotating environment is an important measure of the success of the integrated hydraulic variable pitch design. Therefore, it is necessary to conduct a rotating environment adaptability test that fully simulates the operating state of the wind turbine before the integrated hydraulic variable pitch is hung.

[0037] Based on this, the present application provides a testing device that can provide an adaptive hub rotation environment for a pitch device to be tested with integrated hydraulic pitch control, thereby ensuring the reliability of the adaptability test of the pitch device to be tested in the rotation environment.

[0038] like Figure 2 as well as Figure 3 As shown, a test device provided by an embodiment of the present application includes a base 10, a mounting assembly 20 and a driving member 30. The base 10 includes a base body 11 and a support frame 12. The base body 11 includes a bottom support surface 11a and a top support surface 11b. The support frame 12 is arranged on the top support surface 11b. The mounting assembly 20 is arranged on the support frame 12. The mounting assembly 20 includes a rotating shaft 21 and a frame body 22 arranged on the rotating shaft 21. The rotating shaft 21 is supported and rotatably connected to the support frame 12. The axis of the rotating shaft 21 is inclined relative to the bottom support surface 11a. The frame body 22 has a connection interface that matches the variable pitch device to be tested. The driving member 30 is arranged on the base 10 and connected to the mounting assembly 20 to drive the mounting assembly 20 to rotate relative to the base 10 with the rotating shaft 21 as the rotation axis.

[0039] The base body 11 included in the base 10 can be a solid block structure. Of course, in some embodiments, the base 10 can adopt a hollow frame structure, and the bottom support surface 11a and the top support surface 11b can be complete planes. The bottom support surface 11a can be set horizontally, and the bottom support surface 11a and the top support surface 11b can be set in parallel. Of course, the two can also be set to intersect, which can be specifically set according to the structure of the support frame 12.

[0040] The support frame 12 may include one of a support rod, a support plate and a support frame. The support frame 12 may provide support to the rotating shaft 21 at both ends of the rotating shaft 21 in the axial direction X and be rotatably connected to the rotating shaft 21 .

[0041] The driving member 30 may include a servo motor, a motor or other rotary actuators.

[0042] The test equipment provided by one embodiment of the present application has a connection interface on the frame body 22 that matches the variable pitch device to be tested, and can be used to connect with the variable pitch device to be tested. By setting the mounting assembly 20 on the support frame 12, the mounting assembly 20 can be supported at a certain height and a gap is formed between it and the top support surface 11b, so that when the driving member 30 drives the mounting assembly 20 to rotate relative to the support frame 12, interference with the seat body 11 is avoided, thereby ensuring the smooth rotation of the mounting assembly 20 relative to the support frame 12. Since the rotating shaft 21 that is rotatably connected to the mounting assembly 20 and the support frame 12 is tilted relative to the bottom support surface 11a, it can better simulate the rotation environment of the hub 410 and ensure the accuracy of the test data of each variable pitch device to be tested.

[0043] In some optional embodiments, in a test device provided by an embodiment of the present application, the driving member 30 includes a servo motor 31 and a transmission part 32, and the transmission part 32 is connected between the servo motor 31 and the rotating shaft 21 to drive the mounting assembly 20 to rotate relative to the frame body 22.

[0044] The transmission part 32 may include but is not limited to mutually meshing gear structures, mutually meshing gear racks, transmission-cooperating pulley belts, transmission-cooperating sprocket chains, etc., and is connected between the servo motor 31 and the rotating shaft 21 through the transmission part 32 to transfer the kinetic energy of the servo motor 31 to the rotating shaft 21 to drive the rotating shaft 21 to drive the support frame 12 to rotate.

[0045] The test equipment provided by one embodiment of the present application, by making the driving part 30 include a servo motor 31 and a transmission part 32, can use the transmission part 32 to transfer the kinetic energy of the servo motor 31 to the rotating shaft 21 and drive the support frame 12 to rotate, thereby driving the variable pitch device to be tested located on the support frame 12 to rotate, and realize the simulation of the rotation environment of the hub 410 required for the variable pitch device to be tested. The setting of the servo motor 31 allows the installation component of the test equipment to be steplessly speed-regulated and can also rotate at a variable speed. The maximum speed can meet more than 1.2 times the rated speed of the wind turbine. When the wind turbine is running, the impeller 400 may exceed the rated speed by 1.2 times. The function of each variable pitch device in the short-term maximum rotation situation is tested to see whether it meets the use requirements of the system. It can simulate the different operating states of the wind turbine in a relatively comprehensive manner, truly simulate the working conditions of the variable pitch device to be tested when it is actually working, and ensure the accuracy of the performance test of the variable pitch device to be tested.

[0046] In some optional embodiments, in a testing device provided by an embodiment of the present application, the angle α between the axial direction X of the rotating shaft 21 and the bottom supporting surface 11 a is in the range of 6° to 10°.

[0047] The value range of the angle α between the axial direction X of the rotating shaft 21 and the bottom supporting surface 11a is any value between 6° and 10°, including the two end values ​​of 6° and 10°, and can be selected as any value between 7° and 9°. In some optional embodiments, the angle between the axial direction X of the rotating shaft 21 and the bottom supporting surface 11a can be selected as 8°, etc.

[0048] Since the hub 410 of the impeller 400 is in an upward-looking state when installed on the cabin 300, that is, it has a certain inclination angle relative to the ground or the horizontal plane. The test equipment provided by an embodiment of the present application, through the value range of 6°~10° of the angle α between the axial direction X of the rotating shaft 21 and the bottom support surface 11a, makes the value range of 6°~10° of the angle α between the axial direction X of the rotating shaft 21 and the ground or the experimental table when the test equipment is supported on the ground or the experimental table, which can simulate the upward-looking state of the hub 410 when installed on the cabin 300, and can better simulate the working conditions of the variable pitch device to be tested when it is actually working, and ensure the accuracy of the performance test of the variable pitch device to be tested.

[0049] In some optional embodiments, a test device provided by one embodiment of the present application has at least one of an accumulator mount 60 , a first motor pump group mount, a second motor pump group mount, a positive pressure fuel tank mount 70 and a cooler mount 80 provided on the frame body 22 .

[0050] The frame body 22 may be provided with one of the accumulator mounting seat 60, the first motor pump group mounting seat, the second motor pump group mounting seat, the positive pressure fuel tank mounting seat 70 and the cooler mounting seat 80, or more than two or all of the accumulator mounting seat 60, the first motor pump group mounting seat, the second motor pump group mounting seat, the positive pressure fuel tank mounting seat 70 and the cooler mounting seat 80 may be provided, and the specific amount may be determined according to the number and type of the variable pitch components to be tested.

[0051] Optionally, one of the first motor pump unit mounting base and the second motor pump unit mounting base can be used to mount the servo motor pump unit, and the other can be used to mount the offline motor pump unit.

[0052] Optionally, any one of the accumulator mounting seat 60, the first motor pump group mounting seat, the second motor pump group mounting seat, the positive pressure fuel tank mounting seat 70 and the cooler mounting seat 80 may be provided with a connection interface that cooperates with the variable pitch device to be tested, and the connection interface includes but is not limited to a connection hole, a connection slot, etc.

[0053] The test equipment provided by an embodiment of the present application, through the above-mentioned configuration, is conducive to ensuring the installation requirements of variable pitch components such as accumulators, servo motor pump groups, offline motor pump groups, positive pressure fuel tanks, coolers, etc., and can not only simulate the rotation environment inside the hub 410, but also ensure the reliability of the installation of the variable pitch components to be tested.

[0054] In some optional embodiments, in a test device provided by an embodiment of the present application, an accumulator mounting seat 60 is provided on the frame body 22, and the angle between the extension direction of the accumulator mounting seat 60 and the axial direction X of the rotating shaft 21 is any value between 25° and 45°, including two end values ​​of 25° and 45°, and can be optionally 30° to 40°. In some optional examples, it can be optionally 33°, 35°, 37°, etc.

[0055] The test equipment provided by an embodiment of the present application is provided with an accumulator mounting seat 60 on the frame body 22, so that when the variable pitch device to be tested includes an accumulator, the installation of the accumulator on the frame body 22 can be ensured, and the angle between the extension direction of the accumulator mounting seat 60 and the axial direction X of the rotating shaft 21 is limited to an inclination angle of 25° to 45°, which can adapt to the inclination angle requirement between the accumulator and the main shaft when the accumulator is actually working in the hub 410, which is beneficial to the real simulation of the environment inside the hub 410. At the same time, the above-mentioned angle range can determine the adapted angle according to the model to be simulated, thereby improving the reliability of the simulation test.

[0056] like Figures 2 to 4 As shown, in some optional embodiments, the testing equipment provided by one embodiment of the present application further includes a loading component 40, the loading component 40 includes a telescopic mechanism 41 and a moving block 42 connected to the telescopic mechanism 41, and the loading component 40 is configured to be connected to a positive pressure fuel tank installed on a positive pressure fuel tank mounting seat 70 to obtain oil and drive the moving block 42 to reciprocate along a straight line trajectory.

[0057] When the positive pressure fuel tank is actually working in the wheel hub 410, it is used to connect with the telescopic component that drives the blades to rotate, and oil is provided to the telescopic component to drive the blades 420 to rotate relative to the wheel hub 410. The test equipment provided in one embodiment of the present application, by setting a loading component 40 and making it include a telescopic mechanism 41 and a moving block 42, can simulate the telescopic component connected in the actual working condition of the positive pressure fuel tank through the telescopic mechanism 41, and simulate the driven blades 420 through the moving block 42, so as to simulate the actual working condition of the positive pressure fuel tank and ensure the accuracy of the test of the adaptability of the positive pressure fuel tank in the rotating environment.

[0058] In some optional embodiments, the test equipment provided by one embodiment of the present application further includes an auxiliary support 50, a guide rail 51 is provided on the auxiliary support 50, the telescopic mechanisms 41 are arranged in pairs on the auxiliary support 50, the paired telescopic mechanisms 41 are symmetrically distributed relative to the moving block 42, and the moving block 42 is slidably matched with the guide rail 51.

[0059] The telescopic mechanism 41 includes but is not limited to a hydraulic cylinder, an electric cylinder, etc. The guide rail 51 can move along a straight track or the like.

[0060] The test equipment provided by an embodiment of the present application, by setting an auxiliary support 50 and setting a guide rail 51 on the auxiliary support 50, can provide an installation space for the telescopic mechanism 41 arranged in pairs. At the same time, when the positive pressure fuel tank is working, it is usually connected with at least two telescopic components. By arranging the telescopic mechanism 41 in pairs and symmetrically distributed on both sides of the moving block 42, it can simulate the driving condition of the positive pressure fuel tank on the blade 420 during actual work, which is beneficial to the performance test of the positive pressure fuel tank.

[0061] In some optional embodiments, a test device provided by an embodiment of the present application further includes a control cabinet, and the control cabinet is electrically connected to the driving member 30 and the telescopic mechanism 41.

[0062] The test equipment provided by an embodiment of the present application, by setting up a control cabinet, is conducive to controlling the rotation timing, rotation speed, etc. of the driving member 30, and is also conducive to controlling the opening and closing of the telescopic mechanism 41, thereby ensuring the simulation effect of the test equipment on the rotation environment of the wheel hub 410.

[0063] Continue reading Figures 2 to 4 As shown, in some optional embodiments, some embodiments of the present application provide a test device, wherein the support frame 12 includes a first bracket 121 and a second bracket 122 spaced apart on the seat body 11, the rotating shaft 21 is rotatably connected to the first bracket 121 and the second bracket 122 respectively, the frame body 22 is located between the first bracket 121 and the second bracket 122, and the driving member 30 is connected to one of the first bracket 121 and the second bracket 122.

[0064] The first bracket 121 and the second bracket 122 can be spaced apart in the axial direction X of the rotating shaft 21 . The first bracket 121 and the second bracket 122 can adopt a plate-like structure. Of course, a hollow frame structure can also be adopted to ensure the support strength while reducing the weight and cost.

[0065] Bearings may be provided at the fitting locations of the first bracket 121 and the rotating shaft 21 as well as at the fitting locations of the second bracket 122 and the rotating shaft 21. The provision of bearings is helpful in ensuring the rotational fit between the rotating shaft 21 and the first bracket 121 and the second bracket 122.

[0066] The test equipment provided by one embodiment of the present application can ensure the support and rotation connection requirements of the rotating shaft 21 by setting the first bracket 121 and the second bracket 122, and can provide a support position for the driving member 30. The frame body 22 is located between the first bracket 121 and the second bracket 122, which can ensure the stability of the support of the frame body 22 itself. When the frame body 22 rotates with the rotating shaft 21, it can avoid interference with the seat body 11. In addition, the driving member 30 is connected to one of the first bracket 121 and the second bracket 122, which is conducive to position fixing, and can shorten the transmission path from the output end of the driving member 30 to the rotating shaft 21, reduce energy loss, and ensure the stability of the drive to the rotating shaft 21.

[0067] In some optional embodiments, an embodiment of the present application provides a testing device, wherein the seat body 11 includes a first seat body 111, a second seat body 112 and a connecting frame 113 that are spaced apart, the height of the first seat body 111 is higher than the height of the second seat body 112, the connecting frame 113 is inclined and respectively connected to the first seat body 111 and the second seat body 112, the top supporting surface 11b is formed on the connecting frame 113, and the bottom supporting surface 11a is formed on the first seat body 111 and the second seat body 112.

[0068] The first base 111, the second base 112 and the connecting frame 113 may be plate-shaped structures, or hollow frame structures, and the first base 111, the second base 112 and the connecting frame 113 may be welded, or may be fastener-connected or integrally molded.

[0069] In the height direction Y of the first base body 111 and the second base body 112, the ends of the first base body 111 and the second base body 112 that are away from the connecting frame 113 can be located in the same plane, which can be understood as the bottom support surface 11a mentioned above, and at the same time, the end surface of the connecting frame 113 facing the first bracket 121 and the second bracket 122 can be understood as the top support surface 11b. Optionally, the angle between the top support surface 11b and the bottom support surface 11a can be selected to be 6° to 10°, and optionally, the axial direction X of the rotating shaft 21 can be parallel to the top support surface 11b.

[0070] In a test device provided by an embodiment of the present application, the seat body 11 adopts the above-mentioned structural form, which can not only ensure the support of the mounting assembly 20 and the variable pitch device to be tested connected thereto, but also facilitate the tilt setting requirements of the rotating shaft 21 and ensure the stability of the test of the test equipment.

[0071] The test equipment provided by an embodiment of the present application can, when in use, install the pitch devices to be tested, such as hydraulic stations, accumulators, coolers, fuel tanks and other devices, on corresponding mounting seats, and drive the rotating shaft 21 through the driving member 30 to drive the frame body 22 to move, thereby driving the pitch devices to be tested to rotate, so that the operating parameters of each pitch device to be tested can be operated according to the hydraulic pitch working state parameters, and the test equipment provides a rotating environment, different rotation speeds and variable rate rotation function data tests, and the feedback data of each pitch device to be tested can be collected and compared and analyzed through additional analysis equipment to check whether the test results meet the hydraulic pitch parameter requirements of the wind turbine.

[0072] For example, the positive pressure tank rotation environment test includes testing the static friction of the positive pressure tank piston, the air pressure value and the matching of the hydraulic pump suction port pressure, and the influence of the centrifugal force on the positive pressure tank piston during rotation. The servo motor pump group is tested in a rotation environment to test the volumetric efficiency of the hydraulic pump at different rotation speeds. The cooling system is tested in a rotation environment to see whether the rotating blades, motor speed and mechanical strength meet the fan requirements in the rotating state. In the hub 410 environment, the influence of cooling power is tested to predict in advance the adaptability of the variable pitch devices included in the integrated hydraulic variable pitch device in the hub 410, and to ensure that the integrated hydraulic variable pitch meets the use environment requirements in the hub 410.

[0073] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A testing device, characterized in that: include: The base comprises a base body and a support frame, wherein the base body comprises a bottom support surface and a top support surface, and the support frame is arranged on the top support surface; A mounting assembly is arranged on the support frame, the mounting assembly comprises a rotating shaft and a frame body arranged on the rotating shaft, the rotating shaft is supported and rotatably connected to the support frame, the axis of the rotating shaft is inclined relative to the bottom support surface, and the frame body has a connection interface matched with the pitch device to be tested; The driving member is arranged on the base and connected to the mounting assembly to drive the mounting assembly to rotate relative to the base with the rotating shaft as the rotating axis.

2. The test device according to claim 1, characterized in that The driving member includes a servo motor and a transmission part, and the transmission part is connected between the servo motor and the rotating shaft to drive the mounting assembly to rotate relative to the frame body.

3. The testing device according to claim 1, characterized in that The angle between the axial direction of the rotating shaft and the bottom supporting surface ranges from 6° to 10°.

4. The testing device according to claim 1, characterized in that At least one of an accumulator mounting seat, a first motor pump group mounting seat, a second motor pump group mounting seat, a positive pressure fuel tank mounting seat and a cooler mounting seat is arranged on the frame body.

5. The testing device according to claim 4, characterized in that The frame body is provided with the accumulator mounting seat, and the angle between the extending direction of the accumulator mounting seat and the axial direction of the rotating shaft is 25° to 45°.

6. The testing device according to claim 4, characterized in that The testing device also includes a loading component, which includes a telescopic mechanism and a moving block connected to the telescopic mechanism. The loading component is configured to be connected to the positive pressure fuel tank installed on the positive pressure fuel tank mounting seat to obtain oil and drive the moving block to reciprocate along a straight line trajectory.

7. The testing device according to claim 6, characterized in that The testing device also includes an auxiliary support, on which a guide rail is arranged, and the telescopic mechanisms are arranged in pairs on the auxiliary support. The paired telescopic mechanisms are symmetrically distributed relative to the moving block, and the moving block is slidably matched with the guide rail.

8. The testing device according to claim 6, characterized in that The testing device further comprises a control cabinet, and the control cabinet is electrically connected to the driving member and the telescopic mechanism.

9. The testing device according to any one of claims 1 to 8, characterized in that: The support frame includes a first bracket and a second bracket spaced apart on the seat body, the rotating shaft is movably connected to the first bracket and the second bracket respectively, the frame body is located between the first bracket and the second bracket, and the driving member is connected to one of the first bracket and the second bracket.

10. The testing device according to claim 9, characterized in that The seat body includes a first seat body, a second seat body and a connecting frame which are arranged at intervals. The height of the first seat body is higher than that of the second seat body. The connecting frame is arranged at an angle and is respectively connected to the first seat body and the second seat body. The top supporting surface is formed on the connecting frame, and the bottom supporting surface is formed on the first seat body and the second seat body.

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