Fatigue loading test device for wind turbine blade of wind generating set

Abstract

The utility model discloses a wind turbine blade fatigue loading test device of a wind generating set, which comprises a clamping component, a clamping component, a clamping component and a testing component, and the clamping component comprises a lower bottom plate, a lower clamping plate, an upper bottom plate and an upper clamping plate; the adjusting part comprises a pressing plate, a hydraulic device, a hydraulic rod, a supporting rod, a telescopic rod and extension plates, the extension plates are symmetrically connected to the two ends of the outer surface of the upper bottom plate, the hydraulic device is located on the upper surfaces of the extension plates, the hydraulic rod is connected to the middle of the bottom end of the hydraulic device, and the supporting rod is connected to the middle of the bottom end of the hydraulic rod; and the pressing plate is connected to the top between the two extension plates. The problems that when the device is used, a wind wheel blade fatigue loading test device can only aim at blades of specific types or specifications, and wind wheel blades of different types and specifications are greatly different in shape, size, structure, bearing capacity and the like, so that universality is lacked, test equipment is repeatedly constructed, and resources are wasted are solved.

Description

Technical Field

[0001] This utility model relates to the field of wind power equipment testing technology, and in particular to a fatigue loading test device for wind turbine blades. Background Technology

[0002] In the wind power industry, the fatigue performance of wind turbine blades is one of the key factors to ensure the safe and reliable operation of wind turbine generator sets. Wind power equipment testing is a complex and comprehensive process aimed at ensuring the performance and safety of wind turbine generator sets and components.

[0003] A search of publication number CN202661260U reveals a fatigue loading test device for wind turbine blades, belonging to the field of blade load simulation testing. This device addresses the problems of complex structure and poor reliability in existing test devices. The test blade is laterally fixed to a loading test support, and a blade clamp is installed on one cross-section of the blade. The device includes: a motor fixed to the bottom of the blade clamp; a reducer fixed to the bottom of the blade clamp and connected to the motor, with a pin at its output shaft end; a connecting rod, one end of which is hinged to the pin on the output shaft; and a mass block fixed to the other end of the connecting rod. This device utilizes the resonance generated by the rotational frequency of the eccentric mass block matching the lateral natural frequency of the blade to load the blade. The motor consumes less power, saving loading energy. Because the mass block connecting rod is hinged to the reducer output shaft, the bending moment on the reducer output shaft caused by the mass block's own weight is avoided, reducing damage to the equipment. The device has a simple structure, which helps improve the reliability of fatigue testing.

[0004] However, when the above-mentioned devices are used, the wind turbine blade fatigue loading test device can often only be used for specific types or specifications of blades. Different types and specifications of wind turbine blades have significant differences in shape, size, structure and load-bearing capacity, resulting in a lack of versatility and leading to the duplication of test equipment construction and waste of resources. Therefore, it is necessary to provide a wind turbine blade fatigue loading test device to improve the utilization efficiency of test equipment and reduce test costs. Utility Model Content

[0005] The purpose of this utility model is to provide a fatigue loading test device for wind turbine blades, in order to solve the problem mentioned in the background art, where the above-mentioned device can only be used for specific types or specifications of blades. Different types and specifications of wind turbine blades have significant differences in shape, size, structure and load-bearing capacity, resulting in a lack of versatility and the problem of repeated construction of test equipment and waste of resources.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a fatigue loading test device for wind turbine blades, comprising:

[0008] A clamping component, the clamping component comprising a lower base plate, a lower clamping plate, an upper base plate, and an upper clamping plate;

[0009] The adjusting component includes a pressure plate, a hydraulic device, a hydraulic rod, a support rod, a telescopic rod, and an extension plate. Extension plates are symmetrically connected to both ends of the outer surface of the upper base plate. The hydraulic device is located on the upper surface of the extension plate. The hydraulic rod is connected to the middle of the bottom end of the hydraulic device. The support rod is connected to the middle of the bottom end of the hydraulic rod. The pressure plate is connected to the top between the two extension plates. The telescopic rod is connected to the middle of the bottom end of the support rod and is connected to the top of the pressure plate.

[0010] Furthermore, it also includes a support component, which includes a guide rod, a cross plate, a guide hole, and a support plate. The upper base plate has symmetrically opened guide holes inside, and the top of the upper base plate is symmetrically connected to the guide rod, which is inserted into the guide hole.

[0011] Furthermore, one end of the guide rod is connected to a horizontal plate, a support plate is connected between the two horizontal plates, and a hydraulic rod is connected to the top of the support plate.

[0012] Furthermore, a lower clamping plate is connected to the top of the lower base plate, and an upper clamping plate is connected to the bottom of the upper base plate, with the lower clamping plate and the upper clamping plate corresponding to each other.

[0013] Furthermore, it also includes a fixing component, which includes a top block, a mating groove, a hole, a fixing rod, an insert rod, a vertical plate, a reducer, a fixing plate, a fixing ring, and a guide ring. The guide ring is located on the upper part between the two upper base plates. A set of vertical plates are symmetrically connected to the bottom of the guide ring. The top of the upper base plate is connected to the top block. The top block has a mating groove inside. The vertical plate is inserted into the mating groove. The lower surface of the vertical plate and the interior of the top block both have holes. The insert rod is inserted into the holes.

[0014] Furthermore, the reducer is connected to the middle of the top of the fixed plate, the fixed plate is located at the top between the two upper base plates, the fixed rod is connected to the middle of the top of the upper base plate, and the fixed plate has fixed holes inside both ends, and the fixed rod is inserted into the fixed holes.

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] This invention, by providing a hydraulic device, hydraulic rod, support rod, and telescopic rod on the top of the upper base plate, allows the wind turbine blade to be tested to be placed between the upper and lower clamping plates. The hydraulic device operates, causing the hydraulic rod to extend the telescopic rod inside the support rod, while the base plate presses down on top of the extended plate. The position of the upper clamping plate is adjusted according to the size of the wind turbine blade, ensuring the upper clamping plate is completely pressed against the top of the wind turbine blade. This allows for flexible adjustment of the frame's shape and size to accommodate wind turbine blades of different specifications, thereby improving the utilization efficiency of the testing equipment and reducing testing costs.

[0017] Based on the aforementioned beneficial effects, by providing a top block, a docking groove, and a plug rod on the top of the upper base plate, after the reducer has been running for a long time, the plug rod can be pulled out, causing the plug rod to separate from the hole. The guide ring can be lifted upwards, causing the vertical plate to separate from the docking groove, and the fixing rod to separate from the fixing hole at the same time. This allows the reducer to be disassembled for maintenance or replacement, so that the reducer can operate normally. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the lower clamping plate and the upper clamping plate of this utility model.

[0020] Figure 2 This is a schematic diagram of the lower clamping plate and upper clamping plate after the guide ring of this utility model has been disassembled;

[0021] Figure 3 This is a schematic diagram of the guide ring of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 100. Lower base plate; 101. Lower clamping plate; 102. Upper base plate; 103. Upper clamping plate;

[0024] 200. Pressure plate; 201. Hydraulic device; 202. Hydraulic rod; 203. Support rod; 204. Telescopic rod; 205. Extension plate;

[0025] 300. Guide rod; 301. Horizontal plate; 302. Guide hole; 303. Support plate;

[0026] 400. Top block; 401. Connecting groove; 402. Hole; 403. Fixing rod; 404. Insert rod; 405. Vertical plate; 406. Reducer; 407. Fixing plate; 408. Fixing hole; 409. Guide ring. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0030] Please see Figure 1 , Figure 2 As shown, this embodiment is a fatigue loading test device for wind turbine blades, comprising:

[0031] The clamping component includes a lower base plate 100, a lower clamping plate 101, an upper base plate 102, and an upper clamping plate 103;

[0032] The adjusting component includes a pressure plate 200, a hydraulic device 201, a hydraulic rod 202, a support rod 203, a telescopic rod 204, and an extension plate 205. The extension plates 205 are symmetrically connected to both ends of the outer surface of the upper base plate 102. The hydraulic device 201 is located on the upper surface of the extension plate 205. The hydraulic rod 202 is connected to the middle of the bottom end of the hydraulic device 201. The support rod 203 is connected to the middle of the bottom end of the hydraulic rod 202. The pressure plate 200 is connected to the top between the two extension plates 205. The telescopic rod 204 is connected to the middle of the bottom end of the support rod 203 and is connected to the top of the pressure plate 200.

[0033] The wind turbine blade to be tested is placed between the upper clamping plate 103 and the lower clamping plate 101. The hydraulic device 201 is operated, and the hydraulic rod 202 drives the telescopic rod 204 to extend inside the support rod 203. The bottom plate is pressed against the top of the extension plate 205. The position of the upper clamping plate 103 is adjusted according to the size of the wind turbine blade so that the upper clamping plate 103 is completely pressed against the top of the wind turbine blade. The shape and size of the frame can be flexibly adjusted to accommodate wind turbine blades of different specifications.

[0034] It also includes a support component, which includes a guide rod 300, a horizontal plate 301, a guide hole 302 and a support plate 303. The upper base plate 102 has symmetrically opened guide holes 302 inside, and the top of the upper base plate 102 is symmetrically connected to the guide rod 300. The guide rod 300 is inserted into the guide hole 302.

[0035] When the upper clamping plate 103 moves up and down, its guide rod 300 moves inside the guide hole 302 at the same time, playing a supporting role.

[0036] One end of the guide rod 300 is connected to a horizontal plate 301, a support plate 303 is connected between the two horizontal plates 301, and a hydraulic rod 202 is connected to the top of the support plate 303;

[0037] The horizontal plate 301 and the support plate 303 can be supported between the hydraulic device 201 and the support rod 203.

[0038] The bottom plate 100 is connected to the top of the bottom plate 100 by a bottom clamping plate 101, and the bottom plate 102 is connected to the top clamping plate 103, with the bottom clamping plate 101 and the top clamping plate 103 corresponding to each other.

[0039] The wind turbine blades are clamped and fixed using the upper clamping plate 103 and the lower clamping plate 101.

[0040] The working principle is as follows: First, the wind turbine blade to be tested is placed between the upper clamping plate 103 and the lower clamping plate 101. The hydraulic device 201 is activated, and the hydraulic rod 202 drives the telescopic rod 204 to extend inside the support rod 203. The bottom plate presses down on the top of the extension plate 205, and the guide rod 300 moves inside the guide hole 302 at the same time, providing support. The position of the upper clamping plate 103 is adjusted according to the size of the wind turbine blade, so that the upper clamping plate 103 is completely pressed down on the top of the wind turbine blade. The shape and size of the frame can be flexibly adjusted to accommodate wind turbine blades of different specifications, thereby improving the utilization efficiency of the testing equipment and reducing testing costs.

[0041] Please see Figure 1 , Figure 3 As shown, this embodiment, based on the above embodiment, further includes a fixing component. The fixing component includes a top block 400, a docking groove 401, a hole 402, a fixing rod 403, an insert rod 404, a vertical plate 405, a reducer 406, a fixing plate 407, and a fixing and guide ring 409. The guide ring 409 is located at the upper part between the two upper base plates 102. A set of vertical plates 405 are symmetrically connected to the bottom of the guide ring 409. The top block 400 is connected to the top of the upper base plate 102. The docking groove 401 is opened inside the top block 400. The vertical plate 405 is inserted and connected inside the docking groove 401. Holes 402 are opened on the lower surface of the vertical plate 405 and inside the top block 400. The insert rod 404 is inserted and connected inside the hole 402.

[0042] The upright plate 405 is inserted into the docking groove 401, and the insert rod 404 is inserted into the hole 402, so that the upright plate 405 is fixed on the top of the upper base plate 102.

[0043] The reducer 406 is connected to the middle of the top of the fixed plate 407. The fixed plate 407 is located at the top between the two upper base plates 102. The fixed rod 403 is connected to the middle of the top of the upper base plate 102. Fixed holes 408 are opened inside both ends of the fixed plate 407. The fixed rod 403 is inserted and connected inside the fixed holes 408.

[0044] By inserting the fixing rod 403 into the fixing hole 408, the fixing plate 407 is fixed to the top between the two upper base plates 102.

[0045] The working principle is as follows: First, after the reducer 406 has been running for a long time, the insertion rod 404 is pulled out, which separates the insertion rod 404 from the hole 402. The guide ring 409 is then lifted upward, which separates the vertical plate 405 from the docking groove 401. At the same time, the fixing rod 403 separates from the fixing hole 408, so the reducer 406 can be disassembled for maintenance or replacement so that the reducer 406 can operate normally.

[0046] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wind turbine blade fatigue loading test device for a wind turbine generator system, characterized by, The utility model relates to a kind of adjustable clamp, including: Clamping component, the clamping component includes lower bottom plate (100), lower clamping plate (101), upper bottom plate (102) and upper clamping plate (103); Adjusting component, the adjusting component includes pressing plate (200), hydraulic device (201), hydraulic rod (202), support rod (203), telescopic rod (204) and extension plate (205), the outer surface of the upper bottom plate (102) is connected with extension plate (205) at two ends symmetry, hydraulic device (201) is located on the upper surface of extension plate (205), hydraulic rod (202) is connected in the middle of the bottom end of hydraulic device (201), support rod (203) is connected in the middle of the bottom end of hydraulic rod (202), pressing plate (200) is connected in the top between two extension plate (205), telescopic rod (204) is connected in the middle of the bottom end of support rod (203) and is connected in the top of pressing plate (200).

2. The wind turbine blade fatigue loading test device according to claim 1, wherein It further includes support component, the support component includes guide rod (300), cross plate (301), guide hole (302) and support plate (303), the inside of the upper bottom plate (102) is symmetrically provided with guide hole (302), the top of upper bottom plate (102) is symmetrically connected with guide rod (300), guide rod (300) is inserted and connected in the inside of guide hole (302).

3. The wind turbine blade fatigue loading test device according to claim 2, wherein One end of the guide rod (300) is connected with cross plate (301), support plate (303) is connected between two cross plate (301), and hydraulic rod (202) is connected to the top of support plate (303).

4. The wind turbine blade fatigue loading test device according to claim 1, wherein The top of the lower bottom plate (100) is connected with the lower clamping plate (101), the bottom of the upper bottom plate (102) is connected with the upper clamping plate (103), and the lower clamping plate (101) and the upper clamping plate (103) correspond to each other.

5. The wind turbine blade fatigue loading test device according to claim 1, wherein It further includes fixing component, the fixing component includes top block (400), butt joint groove (401), hole body (402), fixed rod (403), plug rod (404), vertical plate (405), speed reducer (406), fixed plate (407), fixed and guide ring (409), the guide ring (409) is located in the upper portion between two upper bottom plates (102), the bottom of the guide ring (409) is symmetrically connected with a group of vertical plate (405), the top of the upper bottom plate (102) is connected with the top block (400), the inside of the top block (400) is provided with butt joint groove (401), the inside of the butt joint groove (401) is inserted and connected with the vertical plate (405), the lower surface of the vertical plate (405) and the inside of the top block (400) are both provided with hole body (402), and the inside of the hole body (402) is inserted and connected with plug rod (404).

6. The wind turbine blade fatigue loading test apparatus according to claim 5, wherein The speed reducer (406) is connected in the middle of the top end of the fixed plate (407), the fixed plate (407) is located in the top between two upper bottom plates (102), the fixed rod (403) is connected in the middle of the top end of the upper bottom plate (102), the inside of the two ends of the fixed plate (407) is provided with fixed hole (408), and the inside of the fixed hole (408) is inserted and connected with the fixed rod (403).

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