Fan testing device

Abstract

The invention discloses a fan testing device and a test board main body, on one hand, fans of various sizes can be fixed, on the other hand, the stability of a test board is improved, the fan testing device is not easily influenced by vibration during operation of the fans, and errors of test data are reduced. And after the electric clamp automatically positions the fan according to the size of the fan, the fixing head is rotated to further fix the fan from the two sides. Supporting legs are arranged at the four corners of the bottom of the test board body, and moving wheels are arranged near the supporting legs in a one-to-one correspondence mode. And when the supporting legs are folded, the test board main body can be pushed to move. When the fan needs to be tested, the supporting legs are put down, and the moving wheels are suspended. The heights of the four supporting legs can be independently adjusted, so that the test board can ensure the levelness of the fan mounting platform at a position with a certain inclination angle, and the accuracy of a test result is ensured. And two protection door assemblies are also covered on the test board main body, so that the fan is isolated from an operator during testing, and the safety of the operator is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of elastic fluid pump testing devices, in particular to an adjustment test of an elastic fluid pump. Background Art

[0002] Fans are widely used in the industrial field, but fan design requires not only design calculations, but also performance testing before they can be qualified for delivery. Existing fan test devices can only test fans of one size or only test a certain performance indicator of the fan. In addition, the structure of the test device is fixed, and there is little space for modification.

[0003] For example, the "A Fan Performance Testing Equipment" disclosed in announcement number CN212615530U places the fan in the fan fixing hole, closes the opening and closing plate to place the fan in a closed room, which limits the size of the fan that can be tested, and cannot reliably fix large fans with heavy mass. In addition, due to the influence of the fan's own gravity, the force distribution on the device is uneven, resulting in many interference factors in the test process and inaccurate test results. Summary of the invention

[0004] The purpose of the present invention is to provide a test device that can reliably fix the fan, so that the test results are reliable. Another purpose of the present invention is to enable the test device to adapt to fans of various sizes and models. A further purpose of the present invention is to be able to test multiple parameters of the fan on one device. The test device can also be equipped with additional equipment for testing the fan as needed to improve the efficiency of the fan test.

[0005] The present invention achieves the above technical objectives through the following technical means.

[0006] A fan testing device comprises a test bench body, wherein a fan installation platform with a central opening is arranged in the middle of the test bench body, and electric clamps are fixedly arranged around the fan installation platform.

[0007] The test bench body is provided with at least two parallel slide rails, and the slide rails are installed in cooperation with the protection door assembly.

[0008] Furthermore, the test bench body is a frame structure, and support feet are provided at the four corners of the bottom of the test bench body, and the support foot bases of the support feet extend into the test bench body.

[0009] Furthermore, the bottom of the support foot base is a relatively flat pancake-shaped structure, and the upper part of the support foot base is a slender columnar structure located in the middle of the pancake-shaped structure. The columnar structure is provided with threads that cooperate with the leveling nut. The leveling nut is located below the test bench body and contacts and cooperates with the test bench body.

[0010] Preferably, moving wheels are provided at the bottom of the test bench body, and the moving wheels are provided at least at four locations and are symmetrically distributed, and the fixed shafts of the moving wheels are fixedly mounted to the test bench body.

[0011] Furthermore, the exterior of the fixed shaft portion is covered and connected with a rotating shell, and the rotating shell is hinged to the fixed shaft portion.

[0012] One side of the rotating shell is provided with an opening which is hinged to the wheel portion, and the wheel portion is parallel to the axis of the fixed shaft portion.

[0013] Furthermore, a through opening is provided in the middle of the fan installation platform to separate the fan installation platform into two parts, and electric clamps are symmetrically provided around the fan installation platform, and the clamp fixing part and the clamp sliding part of the electric clamp are installed in coordination.

[0014] The upper part of the clamp fixing part is an inverted trapezoidal structure, the bottom of the clamp sliding part is provided with an inverted trapezoidal groove, and the clamp fixing part cooperates with the clamp sliding part.

[0015] Furthermore, a cavity is provided on the upper portion of the sliding portion of the clamp, a rotating chuck is provided in the cavity, and the rotating chuck is hinged to the sliding portion of the clamp.

[0016] A rod-shaped structure extends outward from the top of the rotating chuck, and a cylindrical fixed head is vertically installed downward at the end of the rod-shaped structure. The rotating chuck drives the fixed head to rotate and cooperate to fix the fan.

[0017] Furthermore, the protection door assembly is a semi-enclosed structure, the protection door assembly is covered on the test bench body, the protection door assembly is provided with a door slider downward, the door slider cooperates with the slide rail, the slide rail is provided parallel to the fan installation platform, and the heights of the bottoms on both sides of the protection door assembly are the same.

[0018] Furthermore, the top end of the slide rail is a cylindrical structure, the lower end of the slide rail is a conical structure, and a groove is provided on the sliding block on the door, and the shape of the groove matches the cross-sectional shape of the slide rail.

[0019] A door upper rail having the same shape as the slide rail is provided on one side of the upper portion of the protection door assembly, a sliding block is provided at a corresponding position of the test bench body, and side limiting plates are provided at both ends of the door upper rail and are located on the protection door assembly.

[0020] Furthermore, a test component installation site is provided on the fan installation platform, a motor test component is provided near the test component installation site, the protective door assembly is a frame structure, the opening of the protective door assembly is covered with a partition net, the partition net is fixedly mounted on a partition net mounting plate, and the partition net mounting plate is fixedly connected to the frame of the protective door assembly.

[0021] The present invention has the following beneficial effects: Compared with the prior art, the fan needs to be fixed manually, or can only fix fans of one size and model, and the test device itself cannot be moved, which limits the location of the fan test and cannot test multiple performance indicators of the fan at the same time.

[0022] The present invention sets up a larger test bench body, which can fix fans of various sizes on the one hand, and increase the stability of the test bench on the other hand, so that it is not easily affected by the vibration of the fan during operation, resulting in large errors in the test data. And the electric clamp can automatically position the fan according to the size of the fan, and then rotate the fixing head to further fix the fan from both sides. Support feet are provided at the four corners of the bottom of the test bench body, and a moving wheel is provided one by one near the supporting feet. When the supporting feet are retracted, the movement of the test bench body can be promoted. When the fan needs to be tested, the supporting feet are put down so that the moving wheels are suspended in the air, and the four supporting feet can adjust the height independently, so that the test bench can ensure the horizontality of the fan installation platform at a position with a certain tilt angle, and test the fan. There are also two protective door assemblies on the test bench body, which isolate the fan from the operator during the test to ensure the safety of the personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The three-dimensional structure schematic diagram of the present invention is equipped with a fan.

[0024] Figure 2 It is the front view of the present invention.

[0025] Figure 3 It is the front view of the device of the present invention itself.

[0026] Figure 4 It is a side sectional view of the position of the moving wheel of the present invention.

[0027] Figure 5 for Figure 4 A partial enlarged view of part A in the middle.

[0028] Figure 6 for Figure 4 A partial enlarged view of part B in the middle.

[0029] Figure 7 It is a side sectional view of the position of the electric clamp of the present invention.

[0030] Figure 8 for Figure 7 A partial enlarged view of part C in the middle.

[0031] Fig. 9 It is a cross-sectional view in the main viewing direction of the present invention.

[0032] Fig.10 for Fig. 9 A partial enlarged view of part D in the middle.

[0033] Fig.11 for Fig. 9 A partial enlarged view of part E in the middle.

[0034] Fig.12 It is a bottom view of the protective door assembly of the present invention.

[0035] Fig.13 for Fig.12 A partial enlarged view of part F in the middle.

[0036] Fig.14 This is a schematic diagram of the three-dimensional structure of the present invention after the protective door assembly is removed.

[0037] In the figure, 1-test bench body, 11-fan installation platform, 111-electric clamp, 1111-clamp sliding part, 1112-clamp fixing part, 1113-rotating clamp, 1114-fixed head, 112-motor test assembly, 1121-motor, 1122-motor clamp, 113-test assembly installation place, 12-slide rail, 121-slide rail support plate, 13-support foot, 131-support foot base, 132-leveling nut, 14-moving wheel, 141-wheel part, 142-fixed shaft part, 143-rotating shell, 15-slider, 16-slider mounting plate, 2-protective door assembly, 21-partition net, 22-door guide rail, 23-side limit plate, 24-door slider, 25-partition net mounting plate, 251-mounting waist hole, 3-fan. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0039] Embodiment 1: like Figures 1 to 14 As shown, a wind turbine testing device includes a test bench body 1, the bottom of the test bench body 1 is a cubic structure, the four corners of the test bench body 1 are square tube structures, and the length of the square tube structure far exceeds the height of the bottom structure of the test bench body 1. A grid-like structured barrier is provided between two adjacent square tubes that are closer to each other. Two barrier nets are symmetrically provided on the test bench body 1 to block and protect the upper space on the side of the test bench body 1. The heights of the ends of the square tubes are all the same.

[0040] Between the two fences, perpendicular to the direction of the fences, a slide rail 12 is provided above the end of the square tube on one side, the length of which exceeds the distance between the two fences, and the distance exceeded by the slide rail 12 at both ends of the two fences is the same. In the direction parallel to the guide rail, on the square tube on the other side, a slider mounting plate 16 is installed above each square tube, and the slider mounting plates 16 are installed facing each other. Two sliders 15 are installed above the slider mounting plates 16, and the two sliders 15 on the same slider mounting plate 16 are installed in a collinear manner, and the total of four sliders on the two slider mounting plates 16 are also collinear.

[0041] A fan installation platform 11 with a central opening is provided in the middle of the test bench body 1, and the fan installation platform 11 is the upper surface platform of the bottom structure of the test bench body 1. The middle position of the fan installation platform 11 is a large circular opening, which can accommodate fans 3 of various sizes for subsequent fixation. For fans 3 of smaller sizes, which are easier to fix and have less vibration, they can be placed separately in a disc-shaped structure with a larger area, which can clamp the fan 3. When installed on the test bench body 1, the disc-shaped structure can be fixed instead of fixing the fan 3 separately.

[0042] The space between the position of the fan installation platform 11 of the test bench body 1 and the bottom structure of the test bench body 1 is a hollow structure with a large space. Additional test devices or equipment can be installed. Therefore, when the fan 3 is large in size, high in power, and has strong vibration, it will have a greater impact on the test results when it is directly installed at the position of the fan installation platform 11. A hanging structure can be installed under the opening of the fan installation platform 11 to offset the impact of the fan 3 itself when it is running, thereby improving the accuracy of the test results.

[0043] In order to more effectively and quickly position and fix the fan 3, electric clamps 111 are fixedly provided around the fan installation platform 11. The installation positions of the electric clamps 111 are close to the edge of the opening position of the fan installation platform 11. The electric clamps 111 can move along the edge of the fan installation platform 11 and automatically position and fix the fan 3 in this direction.

[0044] At least two slide rails 12 are arranged in parallel on the test bench body 1, one of which is the slide rail 12 installed at the top of the square tube at the angular position of the test bench body 1, and the other is installed on the outside of the fan installation platform 11, fitting with the fan installation platform 11, and the slide rail 12 there is the same length as the slide rail 12 at the top of the square tube, and they are parallel to each other. In this embodiment, three slide rails 12 are arranged, one is installed at the top of the square tube, and the other two are installed on both sides of the fan installation platform 11 perpendicular to the fence.

[0045] The slide rail 12 is installed in cooperation with the protection door assembly 2. The protection door assembly 2 can be installed on the slide rail 12 and slide freely on the slide rail 12, so that it can slide freely on the test bench body 1. A slide rail support plate 121 is provided at each position where the slide rail 12 cooperates with the square tube, which is fixedly connected to the slide rail 12 and the square tube at the same time. And the connection length between the part of the slide rail 12 hanging outside the square tube and the slide rail support plate 121 is longer, which can avoid bending and deformation of the slide rail 12 due to outward extension. Reduce sliding resistance and extend the service life of the slide rail 12.

[0046] The test bench body 1 is a frame structure, and the corners of the test bench body 1 are supported by skeleton rods, and the bottom of the test bench body 1 is covered by a complete bottom panel. When other parameters are measured, or only the vibration data of the fan 3 needs to be measured, an additional detection device can be installed at the bottom of the test bench body 1 to measure the vibration of the fan 3.

[0047] Support legs 13 are provided at the four corners of the bottom of the test bench body 1, and the support leg bases 131 of the support legs 13 extend into the test bench body 1. Specifically, the shafts of the support leg bases 131 extend into the square tubes at the four corners of the test bench body 1.

[0048] The bottom of the support foot base 131 is a relatively flat pancake-shaped structure, which is divided into two layers, the lower layer is a rubber structure, which can reduce damage to the ground surface in contact, and the upper layer is a metal structure, which improves the support strength. The upper structure is a truncated cone structure upwards, and then a uniform vertical threaded rod structure upwards. Therefore, the upper part of the support foot base 131 is a slender columnar structure, and the columnar structure is provided with threads, a part of which extends into the bottom plate of the square tube. The columnar structure is located in the middle of the pancake structure, specifically, at the center of the upper circular surface of the truncated cone structure.

[0049] The columnar structure is provided with a thread that is threadedly matched with a leveling nut 132, and the upper surface of the leveling nut is a plane. The leveling nut 132 is located below the test bench body 1 and is in contact with the test bench body 1. Because the support feet 13 are provided at the four corners of the bottom of the test bench body 1, the heights of the four corners of the test bench body 1 can be adjusted independently. When there is a certain height difference on the ground during the test, causing the wind installation platform 11 to be unable to remain horizontal, the leveling nut 132 on the support foot base 131 can be rotated.

[0050] The upper surface of the leveling nut will contact the bottom of the test bench body 1, so that the length of the support foot base 131 extending into the interior of the test bench body 1 becomes shorter and shorter, thereby lifting the test bench body 1. Put down the test bench body 1 and rotate the leveling nut 132 to make the length of the part of the support foot base 131 exposed to the outside world shorter and shorter. It should be noted that the leveling nut 132 cannot lift the test bench body 1 too high, otherwise the support foot 13 will easily fall off the test bench body 1. At the same time, the bottom height of the test bench body 1 cannot be placed too low, otherwise the support foot 13 will not be able to play a supporting role, but will be supported by the moving wheels 14, and the test bench body 1 will move on the ground and will no longer be fixed.

[0051] The bottom of the test bench body 1 is also provided with moving wheels 14, and the moving wheels 14 are generally installed near the supporting feet 13. The moving wheels 14 are provided at least at four locations at the bottom of the test bench body 1 and are symmetrically distributed. The height of the moving wheels 14 is generally less than the height of the supporting feet 13. When the test bench body 1 is in use, the supporting feet 13 support the test bench body 1, and the test bench body 1 does not move at this time. When the test bench body 1 needs to be moved, the supporting feet 13 are retracted. At this time, the moving wheels 14 support the test bench body 1, and the test bench body 1 can be driven to move.

[0052] The fixed shaft portion 142 of the moving wheel 14 is fixedly mounted on the test bench body 1. The fixed shaft portion 142 is covered with a rotating housing 143, and the rotating housing 143 is hinged to the fixed shaft portion 142. One side of the rotating housing 143 is provided with an opening, which is hinged to the wheel portion 141, and the axis of the wheel portion 141 is parallel to the axis of the fixed shaft portion 142.

[0053] A through opening is provided in the middle of the fan mounting platform 11, which divides the fan mounting platform 11 into two parts. Electric clamps 111 are symmetrically provided around the fan mounting platform 11. The clamp fixing part 1112 of the electric clamp 111 is installed in cooperation with the clamp sliding part 1111. The clamp fixing part 1112 cooperates with the contact surface of the clamp sliding part 1111. The clamp sliding part 1111 can slide on the clamp fixing part 1112 and will not exceed the range of the clamp fixing part 1112.

[0054] The upper part of the clamp fixing part 1112 is in an inverted trapezoidal structure, and the bottom of the clamp sliding part 1111 is also provided with an inverted trapezoidal groove, and the inverted trapezoidal structure of the clamp fixing part 1112 cooperates with the inverted trapezoidal groove of the clamp sliding part 1111. The inverted trapezoidal structure can make the cooperation between the clamp fixing part 1112 and the clamp sliding part 1111 more firm and reliable, and the clamp sliding part 1111 cannot be easily removed from the clamp fixing part 1112. The clamp fixing part 1112 is fixedly installed with the fan installation platform 11.

[0055] A cavity is provided at the upper part of the clamp sliding part 1111, and the upper part of the clamp sliding part 1111 is a cylindrical structure, and the cavity is provided in the cylindrical structure. A rotating chuck 1113 is provided in the cavity, and the rotating chuck 1113 is hinged to the clamp sliding part 1111. The rotating chuck 1113 is a stepped columnar structure in the cavity, and the bottom of the rotating chuck 1113 located in the cavity is a pancake-shaped structure with a larger diameter, and the diameter of the pancake-shaped structure is close to the inner diameter of the cavity. An opening is provided at the upper end of the clamp sliding part 1111, which is connected to the cavity and is located at the center of the cavity. However, the diameter of the opening is much smaller than the inner diameter of the cavity. Therefore, after the electric clamp 111 is assembled, the rotating chuck 1113 will not detach from the clamp sliding part 1111.

[0056] A rod-shaped structure extends outward from the top of the rotating chuck 1113, and a cylindrical fixed head 1114 is installed vertically downward at the end of the rod-shaped structure. The rotating chuck 1113 drives the fixed head 1114 to rotate and cooperate to fix the fan 3. The length of the rod-shaped structure is greater than the radius of the upper cylindrical structure of the clamp sliding part 1111, so that the cylindrical fixed head 1114 is placed on the outside of the upper cylindrical structure of the clamp sliding part 1111 and does not interfere with the movement of the clamp sliding part 1111. When the fan 3 is placed on the electric clamp 111, the clamp sliding part 1111 first fixes the fan 3 from the outside, and then the rotating chuck 1113 is started to make the fixed head 1114 contact with the inner surface of the fan, so that one electric clamp 111 can fix the fan 3 on two contact surfaces, making the fixation more reliable.

[0057] The protective door assembly 2 is a semi-enclosed structure, and the protective door assembly 2 is covered on the test bench body 1. The protective door assembly 2 is provided with a door upper slider 24 downward, and the door upper slider 24 cooperates with the slide rail 12. The slide rail 12 is provided parallel to the fan installation platform 11, and the heights of the bottoms on both sides of the protective door assembly 2 are the same.

[0058] The top end of the slide rail 12 is a cylindrical structure, the lower end of the slide rail 12 is a conical structure, and a groove is provided on the door upper slider 24 , and the shape of the groove matches the cross-sectional shape of the slide rail 12 .

[0059] A door upper rail 22 having the same shape as the slide rail 12 is disposed on one side of the upper portion of the protection door assembly 2 , a slider 15 is disposed at a corresponding position of the test bench body 1 , and side limit plates 23 are disposed at both ends of the door upper rail 22 and are located on the protection door assembly 2 .

[0060] A test component installation location 113 is provided on the fan installation platform 11, and a motor test component 112 is provided near the test component installation location 113. The protection door assembly 2 is a frame structure, and the opening of the protection door assembly 2 is covered with a partition net 21. The partition net 21 is fixedly mounted on a partition net mounting plate 25, and the partition net mounting plate 25 is fixedly connected to the frame of the protection door assembly 2.

[0061] Embodiment 2: The main contents of this embodiment are substantially the same as those of the first embodiment, and further describe the features of the protective door assembly 2 and the features of the fan installation platform 11 .

[0062] like Figures 1 to 14 As shown, a wind turbine testing device includes a test bench body 1, the bottom of the test bench body 1 is a cubic structure, the four corners of the test bench body 1 are square tube structures, and the length of the square tube structure far exceeds the height of the bottom structure of the test bench body 1. A grid-like structured barrier is provided between two adjacent square tubes that are closer to each other. Two barrier nets are symmetrically provided on the test bench body 1 to block and protect the upper space on the side of the test bench body 1. The heights of the ends of the square tubes are all the same.

[0063] Between the two fences, perpendicular to the direction of the fences, a slide rail 12 is provided above the end of the square tube on one side, the length of which exceeds the distance between the two fences, and the distance exceeded by the slide rail 12 at both ends of the two fences is the same. In the direction parallel to the guide rail, on the square tube on the other side, a slider mounting plate 16 is installed above each square tube, and the slider mounting plates 16 are installed facing each other. Two sliders 15 are installed above the slider mounting plates 16, and the two sliders 15 on the same slider mounting plate 16 are installed in a collinear manner, and the total of four sliders on the two slider mounting plates 16 are also collinear.

[0064] A fan installation platform 11 with a central opening is provided in the middle of the test bench body 1, and the fan installation platform 11 is the upper surface platform of the bottom structure of the test bench body 1. The middle position of the fan installation platform 11 is a large circular opening, which can accommodate fans 3 of various sizes for subsequent fixation. For fans 3 of smaller sizes, which are easier to fix and have less vibration, they can be placed separately in a disc-shaped structure with a larger area, which can clamp the fan 3. When installed on the test bench body 1, the disc-shaped structure can be fixed instead of fixing the fan 3 separately.

[0065] The space between the position of the fan installation platform 11 of the test bench body 1 and the bottom structure of the test bench body 1 is a hollow structure with a large space. Additional test devices or equipment can be installed. Therefore, when the fan 3 is large in size, high in power, and has strong vibration, it will have a greater impact on the test results when it is directly installed at the position of the fan installation platform 11. A hanging structure can be installed under the opening of the fan installation platform 11 to offset the impact of the fan 3 itself when it is running, thereby improving the accuracy of the test results.

[0066] In order to more effectively and quickly position and fix the fan 3, electric clamps 111 are fixedly provided around the fan installation platform 11. The installation positions of the electric clamps 111 are close to the edge of the opening position of the fan installation platform 11. The electric clamps 111 can move along the edge of the fan installation platform 11 and automatically position and fix the fan 3 in this direction.

[0067] At least two slide rails 12 are arranged in parallel on the test bench body 1, one of which is the slide rail 12 installed at the top of the square tube at the angular position of the test bench body 1, and the other is installed on the outside of the fan installation platform 11, fitting with the fan installation platform 11, and the slide rail 12 there is the same length as the slide rail 12 at the top of the square tube, and they are parallel to each other. In this embodiment, three slide rails 12 are arranged, one is installed at the top of the square tube, and the other two are installed on both sides of the fan installation platform 11 perpendicular to the fence.

[0068] The slide rail 12 is installed in cooperation with the protection door assembly 2. The protection door assembly 2 can be installed on the slide rail 12 and slide freely on the slide rail 12, so that it can slide freely on the test bench body 1. A slide rail support plate 121 is provided at each position where the slide rail 12 cooperates with the square tube, which is fixedly connected to the slide rail 12 and the square tube at the same time. And the connection length between the part of the slide rail 12 hanging outside the square tube and the slide rail support plate 121 is longer, which can avoid bending and deformation of the slide rail 12 due to outward extension. Reduce sliding resistance and extend the service life of the slide rail 12.

[0069] The test bench body 1 is a frame structure, and the corners of the test bench body 1 are supported by skeleton rods, and the bottom of the test bench body 1 is covered by a complete bottom panel. When other parameters are measured, or only the vibration data of the fan 3 needs to be measured, an additional detection device can be installed at the bottom of the test bench body 1 to measure the vibration of the fan 3.

[0070] Support legs 13 are provided at the four corners of the bottom of the test bench body 1, and the support leg bases 131 of the support legs 13 extend into the test bench body 1. Specifically, the shafts of the support leg bases 131 extend into the square tubes at the four corners of the test bench body 1.

[0071] The bottom of the support foot base 131 is a relatively flat pancake-shaped structure, which is divided into two layers, the lower layer is a rubber structure, which can reduce damage to the ground surface in contact, and the upper layer is a metal structure, which improves the support strength. The upper structure is a truncated cone structure upwards, and then a uniform vertical threaded rod structure upwards. Therefore, the upper part of the support foot base 131 is a slender columnar structure, and the columnar structure is provided with threads, a part of which extends into the bottom plate of the square tube. The columnar structure is located in the middle of the pancake structure, specifically, at the center of the upper circular surface of the truncated cone structure.

[0072] The columnar structure is provided with a thread that is threadedly matched with a leveling nut 132, and the upper surface of the leveling nut is a plane. The leveling nut 132 is located below the test bench body 1 and is in contact with the test bench body 1. Because the support feet 13 are provided at the four corners of the bottom of the test bench body 1, the heights of the four corners of the test bench body 1 can be adjusted independently. When there is a certain height difference on the ground during the test, causing the wind installation platform 11 to be unable to remain horizontal, the leveling nut 132 on the support foot base 131 can be rotated.

[0073] The upper surface of the leveling nut will contact the bottom of the test bench body 1, so that the length of the support foot base 131 extending into the interior of the test bench body 1 becomes shorter and shorter, thereby lifting the test bench body 1. Put down the test bench body 1 and rotate the leveling nut 132 to make the length of the part of the support foot base 131 exposed to the outside world shorter and shorter. It should be noted that the leveling nut 132 cannot lift the test bench body 1 too high, otherwise the support foot 13 will easily fall off the test bench body 1. At the same time, the bottom height of the test bench body 1 cannot be placed too low, otherwise the support foot 13 will not be able to play a supporting role, but will be supported by the moving wheels 14, and the test bench body 1 will move on the ground and will no longer be fixed.

[0074] The bottom of the test bench body 1 is also provided with moving wheels 14, and the moving wheels 14 are generally installed near the supporting feet 13. The moving wheels 14 are provided at least at four locations at the bottom of the test bench body 1 and are symmetrically distributed. The height of the moving wheels 14 is generally less than the height of the supporting feet 13. When the test bench body 1 is in use, the supporting feet 13 support the test bench body 1, and the test bench body 1 does not move at this time. When the test bench body 1 needs to be moved, the supporting feet 13 are retracted. At this time, the moving wheels 14 support the test bench body 1, and the test bench body 1 can be driven to move.

[0075] The fixed shaft portion 142 of the moving wheel 14 is fixedly mounted on the test bench body 1. The fixed shaft portion 142 is covered with a rotating housing 143, and the rotating housing 143 is hinged to the fixed shaft portion 142. One side of the rotating housing 143 is provided with an opening, which is hinged to the wheel portion 141, and the axis of the wheel portion 141 is parallel to the axis of the fixed shaft portion 142.

[0076] A through opening is provided in the middle of the fan mounting platform 11, which divides the fan mounting platform 11 into two parts. Electric clamps 111 are symmetrically provided around the fan mounting platform 11. The clamp fixing part 1112 of the electric clamp 111 is installed in cooperation with the clamp sliding part 1111. The clamp fixing part 1112 cooperates with the contact surface of the clamp sliding part 1111. The clamp sliding part 1111 can slide on the clamp fixing part 1112 and will not exceed the range of the clamp fixing part 1112.

[0077] The upper part of the clamp fixing part 1112 is in an inverted trapezoidal structure, and the bottom of the clamp sliding part 1111 is also provided with an inverted trapezoidal groove, and the inverted trapezoidal structure of the clamp fixing part 1112 cooperates with the inverted trapezoidal groove of the clamp sliding part 1111. The inverted trapezoidal structure can make the cooperation between the clamp fixing part 1112 and the clamp sliding part 1111 more firm and reliable, and the clamp sliding part 1111 cannot be easily removed from the clamp fixing part 1112. The clamp fixing part 1112 is fixedly installed with the fan installation platform 11.

[0078] A cavity is provided at the upper part of the clamp sliding part 1111, and the upper part of the clamp sliding part 1111 is a cylindrical structure, and the cavity is provided in the cylindrical structure. A rotating chuck 1113 is provided in the cavity, and the rotating chuck 1113 is hinged to the clamp sliding part 1111. The rotating chuck 1113 is a stepped columnar structure in the cavity, and the bottom of the rotating chuck 1113 located in the cavity is a pancake-shaped structure with a larger diameter, and the diameter of the pancake-shaped structure is close to the inner diameter of the cavity. An opening is provided at the upper end of the clamp sliding part 1111, which is connected to the cavity and is located at the center of the cavity. However, the diameter of the opening is much smaller than the inner diameter of the cavity. Therefore, after the electric clamp 111 is assembled, the rotating chuck 1113 will not detach from the clamp sliding part 1111.

[0079] A rod-shaped structure extends outward from the top of the rotating chuck 1113, and a cylindrical fixed head 1114 is installed vertically downward at the end of the rod-shaped structure. The rotating chuck 1113 drives the fixed head 1114 to rotate and cooperate to fix the fan 3. The length of the rod-shaped structure is greater than the radius of the upper cylindrical structure of the clamp sliding part 1111, so that the cylindrical fixed head 1114 is placed on the outside of the upper cylindrical structure of the clamp sliding part 1111 and does not interfere with the movement of the clamp sliding part 1111. When the fan 3 is placed on the electric clamp 111, the clamp sliding part 1111 first fixes the fan 3 from the outside, and then the rotating chuck 1113 is started to make the fixed head 1114 contact with the inner surface of the fan, so that one electric clamp 111 can fix the fan 3 on two contact surfaces, making the fixation more reliable.

[0080] The protection door assembly 2 is a semi-enclosed structure, and the protection door assembly 2 is covered on the test bench body 1. The protection door assembly 2 is provided with a door upper slider 24 downward, and the door upper slider 24 cooperates with the slide rail 12. The slide rail 12 is provided parallel to the fan installation platform 11, and the bottoms of both sides of the protection door assembly 2 are at the same height. On the protection door assembly, the projection areas of the door upper sliders 24 located at different heights but on the same side do not overlap, and the projection areas of the two are misaligned.

[0081] The top end of the slide rail 12 is a cylindrical structure, the lower end of the slide rail 12 is a conical structure, and a groove is provided on the door upper slider 24 , and the shape of the groove matches the cross-sectional shape of the slide rail 12 .

[0082] An upper door guide rail 22 having the same shape as the slide rail 12 is provided on one side of the upper portion of the protection door assembly 2, a slider 15 is provided at a corresponding position of the test bench body 1, and side limit plates 23 are provided at both ends of the upper door guide rail 22 and are located on the protection door assembly 2. The side limit plates 23 will collide and interfere with the slider mounting plate 16, thereby preventing the protection door assembly 2 from sliding off the slide rail 12 and thus detaching from the test bench body 1.

[0083] The fan installation platform 11 is provided with a test component installation site 113, and a motor test component 112 is provided near the test component installation site 113. The protection door assembly 2 is a frame structure, and the opening of the protection door assembly 2 is covered with a partition net 21. The partition net 21 is fixedly mounted on a partition net mounting plate 25, and the partition net mounting plate 25 is fixedly connected to the frame of the protection door assembly 2. The partition net mounting plate 25 is a rectangular frame, and the middle part is an opening, which is covered by the partition net 21. The partition net mounting plate 25 is made by cutting and bending two angle steels, and then welding them together. It has a simple structure and is easy to manufacture. At the fixed connection position between the partition net mounting plate 25 and the frame of the protection door assembly 2, several pairs of mounting waist holes 251 are arranged at equal intervals. The partition net 21 is fixedly mounted below the partition net mounting plate 25.

[0084] A motor test assembly 112 is also provided in the middle of the fan installation platform 11. The motor test assembly 112 is located near the opening, and the bottom is a motor fixture 1122. The motor fixture 1122 is vertically fixed above the motor 1121, and the motor 1121 can also be tested for performance when the fan 3 is not tested. A test assembly installation location 113 is installed near the motor test assembly 112. The test assembly installation location 113 is located in the center of one side of the fan installation platform 11, and can be connected and installed with various instruments and sensors for fan 3 performance testing and data measurement.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fan testing device, characterized in that: The invention comprises a test bench body (1), wherein a fan installation platform (11) with a central opening is provided in the middle of the test bench body (1), and electric clamps (111) are fixedly provided around the fan installation platform (11); the test bench body (1) is provided with at least two parallel slide rails (12), and the slide rails (12) are installed in coordination with a protective door assembly (2).

2. A fan testing device according to claim 1, characterized in that: The test bench body (1) is a frame structure, and support legs (13) are provided at the four corners of the bottom of the test bench body (1), and support leg bases (131) of the support legs (13) extend into the test bench body (1).

3. A fan testing device according to claim 2, characterized in that: The bottom of the support foot base (131) is a relatively flat pancake-shaped structure, and the upper part of the support foot base (131) is a slender columnar structure located in the middle of the pancake-shaped structure. The columnar structure is provided with a thread that cooperates with a leveling nut (132). The leveling nut (132) is located below the test bench body (1) and is in contact with the test bench body (1).

4. A wind turbine testing device according to claim 1, 2 or 3, characterized in that: The bottom of the test bench body (1) is provided with moving wheels (14), the moving wheels (14) are provided at least at four locations and are symmetrically distributed, and the fixed shaft portion (142) of the moving wheel (14) is fixedly mounted on the test bench body (1).

5. A wind turbine testing device according to claim 4, characterized in that: The exterior of the fixed shaft portion (142) is covered and connected with a rotating shell (143), and the rotating shell (143) is hinged to the fixed shaft portion (142); One side of the rotating housing (143) is provided with an opening which is hinged to the wheel portion (141), and the wheel portion (141) is parallel to the axis of the fixed shaft portion (142).

6. A wind turbine testing device according to claim 1 or 2 or 3 or 5, characterized in that: A through opening is provided in the middle of the fan installation platform (11), dividing the fan installation platform (11) into two parts; electric clamps (111) are symmetrically provided around the fan installation platform (11); a clamp fixing portion (1112) of the electric clamp (111) is installed in coordination with a clamp sliding portion (1111); The upper portion of the clamp fixing portion (1112) is an inverted trapezoidal structure, the bottom of the clamp sliding portion (1111) is provided with an inverted trapezoidal groove, and the clamp fixing portion (1112) cooperates with the clamp sliding portion (1111).

7. A wind turbine testing device according to claim 6, characterized in that: A cavity is provided at the upper part of the clamp sliding part (1111), a rotating clamp (1113) is provided in the cavity, and the rotating clamp (1113) is hinged to the clamp sliding part (1111); A rod-shaped structure extends outward from the top of the rotating chuck (1113), and a cylindrical fixed head (1114) is installed vertically downward at the end of the rod-shaped structure. The rotating chuck (1113) drives the fixed head (1114) to rotate, thereby cooperating to fix the fan (3).

8. A wind turbine testing device according to claim 1 or 2 or 3 or 5 or 7, characterized in that: The protective door assembly (2) is a semi-enclosed structure. The protective door assembly (2) covers the test bench body (1). The protective door assembly (2) is provided with a door upper slider (24) facing downward. The door upper slider (24) cooperates with the slide rail (12). The slide rail (12) is provided parallel to the fan installation platform (11). The bottoms of both sides of the protective door assembly (2) are at the same height.

9. A wind turbine testing device according to claim 8, characterized in that: The top end of the slide rail (12) is a cylindrical structure, the lower end of the slide rail (12) is a conical structure, and the upper slider (24) of the door is provided with a groove, the shape of the groove matches the cross-sectional shape of the slide rail (12); An upper door guide rail (22) having the same shape as the slide rail (12) is provided on one side of the upper portion of the protection door assembly (2), a sliding block (15) is provided at a corresponding position of the test bench body (1), and side limit plates (23) are provided at both ends of the upper door guide rail (22) and are located on the protection door assembly (2).

10. A wind turbine testing device according to claim 1 or 2 or 3 or 5 or 7 or 9, characterized in that: The fan installation platform (11) is provided with a test component installation location (113), and a motor test component (112) is provided near the test component installation location (113). The protection door assembly (2) is a frame structure, and the opening of the protection door assembly (2) is covered with a partition net (21). The partition net (21) is fixedly mounted on a partition net installation plate (25), and the partition net installation plate (25) is fixedly connected to the frame of the protection door assembly (2).

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