Multi-axis linkage loading clamp for wind power blade component level torsion test

Abstract

The utility model discloses a multi -axle linkage loading clamp for wind power blade component level torsion test relates to test fixture technical field. Including installation base, be provided with the installation mechanism for wind power blade component level torsion test on the installation base, the utility model first hydraulic pressure rod lower extreme is connected with the installation base rotation, and the upper end is connected with the movable block rotation, and when telescoping, can push movable block around the rotation axis of first mounting plate and rotate in vertical direction, and one end of second hydraulic pressure rod is connected with fixed bolster rotation, and the other end is connected with slide rail support rotation, and when telescoping, can drive slide rail support around the rotation axis of second mounting plate and rotate in horizontal direction, and the torque sensor on movable block and second mounting plate real -time monitoring torsional force value, realize accurate collection of test data, and first hydraulic pressure rod and second hydraulic pressure rod cooperate, realize the multi -axle linkage torsion of blade main part in vertical and horizontal direction, simulate the complex stress state of blade in actual working condition.

Description

Technical Field

[0001] This utility model relates to the field of test fixture technology, specifically a multi-axis linkage loading fixture for torsion testing of wind turbine blade components. Background Technology

[0002] With the transformation of the global energy structure and the continued growth in demand for clean energy, wind power, as a mature renewable energy technology with large-scale development potential, has experienced rapid development. As one of the core components of a wind turbine, the performance of the wind turbine blade directly affects its power generation efficiency, operational stability, and service life. During actual operation, wind turbine blades are subjected to complex and variable loads, among which torsional load is one of the key factors affecting the blade's structural integrity and fatigue life. Therefore, conducting precise torsional tests on wind turbine blade components to evaluate their mechanical performance and reliability under complex operating conditions is of great significance for ensuring the safe operation of wind power equipment, improving wind power generation efficiency, and reducing operation and maintenance costs.

[0003] Currently, most traditional wind turbine blade testing fixtures can only perform load tests in a single axis direction, such as applying loads only in the horizontal or vertical direction. However, in actual operating conditions, the torsional force on a wind turbine blade is the result of forces acting in multiple directions. Single-axis load testing cannot realistically simulate the complex stress state of the blade during actual operation, resulting in a large deviation between the test results and the actual situation, and failing to accurately reflect the true performance of the blade. Furthermore, in terms of blade fixing and support, traditional fixtures lack effective adaptability to blade components of different lengths and diameters. Therefore, this utility model provides a multi-axis linkage loading fixture for torsional testing of wind turbine blade components. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a multi-axis linkage loading fixture for torsional testing of wind turbine blade components. This solves the problem that most traditional wind turbine blade testing fixtures can only perform loading tests in a single axis direction, such as applying loads only in the horizontal or vertical direction. However, in actual operating conditions, the torsional force on a wind turbine blade is the result of forces acting in multiple directions. Single-axis loading tests cannot realistically simulate the complex stress state of the blade during actual operation, leading to significant deviations between the test results and the actual situation, and failing to accurately reflect the true performance of the blade. Furthermore, in terms of blade fixing and support, traditional fixtures lack effective adaptability to blade components of different lengths and diameters.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-axis linkage loading fixture for torsion testing of wind turbine blade components, comprising a mounting base, wherein the mounting base is provided with a mounting mechanism for torsion testing of wind turbine blade components, the mounting mechanism comprising: The adjustment component includes a slide groove inside the mounting base, a support base connected by a threaded assembly inside the slide groove, and a support ring connected by a push assembly on the upper surface of the support base. The mounting assembly includes a vertical plate fixed to the upper surface of the mounting base, a first mounting plate fixed to the inner wall of the vertical plate, a movable block rotatably connected to the first mounting plate via a rotating shaft inside the first mounting plate, a second mounting plate rotatably connected to the movable block in the vertical direction via a rotating shaft, a slide rail bracket fixed to one end of the second mounting plate, and a blade body connected to the slide rail bracket via an opening and closing assembly inside the slide rail bracket.

[0006] Preferably, the threaded assembly includes a screw body rotatably connected inside a groove, a slide rod slidably connected to the inner wall of the groove, the screw body and the slide rod being threadedly connected, and the support base being fixedly connected to one end of the slide rod.

[0007] Preferably, the jacking assembly includes a support slide rail fixed to the upper surface of the support base, a slider slidably connected inside the support slide rail, a third hydraulic rod fixed to the upper end of the slider, and a support ring fixedly connected to the top end of the third hydraulic rod.

[0008] Preferably, the mounting base has guide grooves on both sides, and a guide rod is slidably connected inside the guide groove, with one end of the guide rod fixedly connected to the support base.

[0009] Preferably, the upper end face of the mounting base is provided with a first hydraulic rod rotatably connected by a rotating shaft. The upper end of the first hydraulic rod is rotatably connected to the lower end face of the movable block by a rotating shaft. A fixed bracket is fixed on one side of the upper end face of the mounting base. A second hydraulic rod is rotatably connected by a rotating shaft on the inner wall of the fixed bracket. The telescopic end of the second hydraulic rod is rotatably connected to one side of the slide rail bracket by a rotating shaft.

[0010] Preferably, the opening and closing assembly includes a bidirectional lead screw rotatably connected inside the slide rail bracket, a pair of clamping brackets slidably connected to the inner wall of the slide rail bracket, the clamping brackets being threadedly connected to the bidirectional lead screw, an mounting block being engaged inside the clamping brackets, and the blade body being fixedly connected to one end of the mounting block.

[0011] Beneficial effects This invention provides a multi-axis linkage loading fixture for torsion testing of wind turbine blade components. Compared with the prior art, it has the following advantages: Firstly, the lower end of the first hydraulic rod is rotatably connected to the mounting base, and the upper end is rotatably connected to the movable block. When extending or retracting, it can push the movable block to rotate vertically around the rotation axis of the first mounting plate. One end of the second hydraulic rod is rotatably connected to the fixed bracket, and the other end is rotatably connected to the slide rail bracket. When extending or retracting, it can drive the slide rail bracket to rotate horizontally around the rotation axis of the second mounting plate. Torque sensors on the movable block and the second mounting plate monitor the torsional force value in real time, realizing accurate acquisition of test data. The first hydraulic rod and the second hydraulic rod cooperate to realize multi-axis linkage torsion of the blade body in the vertical and horizontal directions, simulating the complex stress state of the blade in actual working conditions.

[0012] Secondly, the screw body and the slide rod of this utility model are threadedly connected. The slide rod will slide horizontally along the slide groove, driving the support base to move synchronously. When the support base moves, the guide rod slides along the guide groove, restricting the movement direction of the support base and avoiding deviation, so as to realize the precise position adjustment of the support base and adapt to the support requirements of blades of different lengths. Then, the motor rotates the bidirectional screw. Since the threads at both ends of the bidirectional screw are opposite, a pair of clamping brackets will slide in opposite directions along the slide rail bracket to realize the opening and closing action. When the clamping bracket is closed, it can clamp the mounting block to fix the blade body. Conversely, it can release the blade. Through the engagement and fixation of the mounting block and the clamping bracket, the blade can be quickly loaded and unloaded. The opening and closing range of the clamping bracket is adjustable to adapt to blade components of different diameters and enhance the versatility of the fixture. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the mounting base of this utility model; Figure 3 This is a schematic diagram of the second mounting plate structure of this utility model; Figure 4 This is a schematic diagram of the slide rail bracket structure of this utility model.

[0014] In the diagram: 1. Mounting base; 2. Supporting base; 201. Slide groove; 202. Screw body; 203. Slide rod; 3. Guide groove; 301. Guide rod; 4. Vertical plate; 401. First mounting plate; 402. Movable block; 403. Second mounting plate; 404. Slide rail bracket; 405. First hydraulic rod; 406. Fixed bracket; 407. Second hydraulic rod; 5. Two-way lead screw; 501. Clamping bracket; 6. Mounting block; 601. Blade body; 7. Support slide rail; 701. Slider; 702. Third hydraulic rod; 703. Support ring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: a multi-axis linkage loading fixture for torsion testing of wind turbine blade components, including a mounting base 1, on which a mounting mechanism for torsion testing of wind turbine blade components is provided, the mounting mechanism including: The adjustment component includes a slide groove 201 inside the mounting base 1, a support base 2 connected by a threaded assembly inside the slide groove 201, and a support ring 703 connected by a push assembly on the upper end face of the support base 2. The mounting assembly includes a vertical plate 4 fixed to the upper surface of the mounting base 1. A first mounting plate 401 is fixed to the inner wall of the vertical plate 4. A movable block 402 is rotatably connected to the first mounting plate 401 via a rotating shaft. A second mounting plate 403 is rotatably connected to the movable block 402 in the vertical direction via a rotating shaft. A slide rail bracket 404 is fixed to one end of the second mounting plate 403. A blade body 601 connected to the slide rail bracket 404 via an opening and closing assembly is disposed inside the slide rail bracket 404.

[0017] In a preferred embodiment, the threaded assembly includes a screw body 202 rotatably connected inside a groove 201, a slide rod 203 slidably connected to the inner wall of the groove 201, a threaded connection between the screw body 202 and the slide rod 203, a support base 2 fixedly connected to one end of the slide rod 203, and guide grooves 3 on both sides of the mounting base 1. A guide rod 301 is slidably connected inside the guide groove 3, and one end of the guide rod 301 is fixedly connected to the support base 2. During operation, rotating the screw body 202 causes the slide rod 203 to slide horizontally along the groove 201 due to the threaded connection between the screw body 202 and the slide rod 203, thus driving the support base 2 to move synchronously. When the support base 2 moves, the guide rod 301 slides along the guide groove 3, limiting the direction of movement of the support base 2, preventing deviation, and achieving precise position adjustment of the support base 2 to adapt to the support requirements of blades of different lengths.

[0018] In a preferred embodiment, the pushing assembly includes a support slide rail 7 fixed to the upper surface of the support base 2. A slider 701 is slidably connected inside the support slide rail 7. A third hydraulic rod 702 is fixed to the upper end of the slider 701. A support ring 703 is fixedly connected to the top of the third hydraulic rod 702. During operation, the slider 701 can slide along the support slide rail 7 to adjust the horizontal position of the support ring 703. When the third hydraulic rod 702 extends or retracts, it drives the support ring 703 to move up and down to adjust the support height. The support ring 703 can slide in contact with one end of the blade body 601 to form auxiliary support, thereby realizing flexible adjustment of the horizontal position of the support ring 703 and adapting to the support requirements of different parts of the blade.

[0019] In a preferred embodiment, the opening and closing assembly includes a bidirectional lead screw 5 rotatably connected inside a slide rail bracket 404. A pair of clamping brackets 501 are slidably connected to the inner wall of the slide rail bracket 404. The clamping brackets 501 are threadedly connected to the bidirectional lead screw 5. A mounting block 6 is engaged inside the clamping brackets 501. The blade body 601 is fixedly connected to one end of the mounting block 6. A first hydraulic rod 405 is rotatably connected to the upper end face of the mounting base 1 via a rotating shaft. The upper end of the first hydraulic rod 405 is rotatably connected to the lower end face of the movable block 402 via a rotating shaft. A fixed bracket 406 is fixed on one side. The inner wall of the fixed bracket 406 is provided with a second hydraulic rod 407 rotatably connected by a rotating shaft. The telescopic end of the second hydraulic rod 407 is rotatably connected to one side of the slide rail bracket 404 by a rotating shaft. The first hydraulic rod 405 is used to rotate the movable block 402 vertically, and the second hydraulic rod 407 drives the slide rail bracket 404 to rotate horizontally, thereby enabling the blade body 601 to perform torque rotation tests in the vertical and horizontal directions. Torque sensors are installed on both the movable block 402 and the second mounting plate 403.

[0020] Specifically, during operation, the bidirectional lead screw 5 is rotated by a motor. Since the threads at both ends of the bidirectional lead screw 5 are in opposite directions, a pair of clamping brackets 501 will slide in opposite directions along the slide rail bracket 404 to achieve opening and closing action. When the clamping brackets 501 are closed, the mounting block 6 can be clamped to fix the blade body 601. Conversely, the blade is released. The blade can be quickly loaded and unloaded by the engagement and fixation of the mounting block 6 and the clamping brackets 501. The opening and closing range of the clamping brackets 501 is adjustable to adapt to blade components of different diameters, enhancing the versatility of the fixture. Furthermore, the lower end of the first hydraulic rod 405 is rotatably connected to the mounting base 1, and the upper end is rotatably connected to the movable block 402. When it extends or retracts, it can push the movable block 402 to rotate vertically around the rotation axis of the first mounting plate 401. One end of the second hydraulic rod 407 is rotatably connected to the fixed bracket 406, and the other end is rotatably connected to the slide rail bracket 404. When it extends or retracts, it can drive the slide rail bracket 404 to rotate horizontally around the rotation axis of the second mounting plate 403. The torque sensors on the movable block 402 and the second mounting plate 403 monitor the torsional force value in real time to achieve accurate acquisition of test data. The first hydraulic rod 405 and the second hydraulic rod 407 cooperate to realize the multi-axis linkage torsion of the blade body 601 in the vertical and horizontal directions, simulating the complex stress state of the blade in actual working conditions.

[0021] The aforementioned screw body and bidirectional lead screw both use a motor device of model mattke HSR1150 / L8-020, the two sets of hydraulic rods are model GYCD-130 / 750, and the torque sensor is model NJL-304.

[0022] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0023] During operation, by rotating the screw body 202, since the screw body 202 is threadedly connected to the slide rod 203, the slide rod 203 slides horizontally along the slide groove 201 and drives the support base 2 to move synchronously. At the same time, the guide rod 301 slides along the guide groove 3 to limit the movement direction of the support base 2, so as to realize the precise position adjustment of the support base 2 and adapt to the support requirements of blades of different lengths. The slider 701 slides along the support slide rail 7 to adjust the horizontal position of the support ring 703. The third hydraulic rod 702 extends and retracts to drive the support ring 703 to move up and down to adjust the support height. The support ring 703 contacts and slides with one end of the blade body 601 to form auxiliary support, which adapts to the support requirements of different parts of the blade. Then, the motor rotates the bidirectional lead screw 5. Since the threads at both ends of the bidirectional lead screw 5 are opposite, a pair of clamping brackets 501 slide along the slide rail bracket 404 to achieve opening and closing actions. When closed, the mounting block 6 is clamped to fix the blade body 601, and vice versa, the blade is released. The opening and closing range of the clamping brackets 501 is adjustable to adapt to blade components of different diameters. During testing, the first hydraulic rod 405 extends and retracts to push the movable block 402 to rotate vertically around the rotation axis of the first mounting plate 401, and the second hydraulic rod 407 extends and retracts to drive the slide rail bracket 404 to rotate horizontally around the rotation axis of the second mounting plate 403. The two work together to achieve multi-axis linkage torsion of the blade body 601 in the vertical and horizontal directions. At the same time, the torque sensors on the movable block 402 and the second mounting plate 403 monitor the torsional force value in real time, accurately collect test data, and simulate the complex stress state of the blade in actual working conditions.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-axis linkage loading fixture for torsion testing of wind turbine blade components, comprising a mounting base (1), characterized in that: The mounting base (1) is equipped with a mounting mechanism for torsion testing of wind turbine blade components. The mounting mechanism includes: The adjustment component includes a slide groove (201) inside the mounting base (1), and a support base (2) connected by a threaded assembly is provided inside the slide groove (201). A support ring (703) connected by a push assembly is provided on the upper surface of the support base (2). The mounting assembly includes a vertical plate (4) fixed to the upper surface of a mounting base (1). A first mounting plate (401) is fixed to the inner wall of the vertical plate (4). A movable block (402) is rotatably connected to the first mounting plate (401) via a rotating shaft. A second mounting plate (403) is rotatably connected to the movable block (402) via a rotating shaft in the vertical direction. A slide rail bracket (404) is fixed to one end of the second mounting plate (403). A blade body (601) connected via an opening and closing assembly is disposed inside the slide rail bracket (404).

2. The multi-axis linkage loading fixture for torsion testing of wind turbine blade components according to claim 1, characterized in that: The threaded assembly includes a screw body (202) rotatably connected inside a groove (201), a slide rod (203) slidably connected to the inner wall of the groove (201), the screw body (202) and the slide rod (203) being threadedly connected, and the support base (2) being fixedly connected to one end of the slide rod (203).

3. The multi-axis linkage loading fixture for torsion testing of wind turbine blade components according to claim 1, characterized in that: The jacking assembly includes a support slide rail (7) fixed to the upper surface of the support base (2), a slider (701) is slidably connected inside the support slide rail (7), a third hydraulic rod (702) is fixed to the upper end of the slider (701), and the support ring (703) is fixedly connected to the top end of the third hydraulic rod (702).

4. The multi-axis linkage loading fixture for torsion testing of wind turbine blade components according to claim 1, characterized in that: The mounting base (1) has guide grooves (3) on both sides, and a guide rod (301) is slidably connected inside the guide groove (3). One end of the guide rod (301) is fixedly connected to the support base (2).

5. The multi-axis linkage loading fixture for torsion testing of wind turbine blade components according to claim 1, characterized in that: The upper end face of the mounting base (1) is provided with a first hydraulic rod (405) rotatably connected by a rotating shaft. The upper end of the first hydraulic rod (405) is rotatably connected to the lower end face of the movable block (402) by a rotating shaft. A fixed bracket (406) is fixed on one side of the upper end face of the mounting base (1). A second hydraulic rod (407) is rotatably connected by a rotating shaft on the inner wall of the fixed bracket (406). The telescopic end of the second hydraulic rod (407) is rotatably connected to one side of the slide rail bracket (404) by a rotating shaft.

6. The multi-axis linkage loading fixture for torsion testing of wind turbine blade components according to claim 1, characterized in that: The opening and closing assembly includes a bidirectional lead screw (5) rotatably connected inside the slide rail bracket (404). A pair of clamping brackets (501) are slidably connected to the inner wall of the slide rail bracket (404). The clamping brackets (501) are threadedly connected to the bidirectional lead screw (5). An installation block (6) is engaged inside the clamping bracket (501). The blade body (601) is fixedly connected to one end of the installation block (6).

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