Support tool for blade testing

Abstract

The embodiment of the present application provides a supporting tool for blade test. The supporting tool comprises a support which is movably arranged on a table top of a test table; a pushing mechanism which is arranged on the support and can move synchronously with the support, the pushing mechanism comprises an extendable pushing part which is used for abutting against one end of a screw rod passing through a connecting hole of the test table so that the screw rod is kept in a stable state; and a driving mechanism which is fixed on the support and connected with the pushing mechanism, and is used for driving the pushing mechanism to move vertically relative to the support so that the pushing part of the pushing mechanism can abut against the screw rod passing through different connecting holes of the test table respectively. The supporting tool of the present application can replace manual work, provide support for the installation of the screw rod on the test table, reduce labor intensity, and improve test preparation efficiency.

Description

Technical Field

[0001] This application belongs to the field of wind turbine blade testing technology, and in particular relates to a support tool for blade testing. Background Technology

[0002] Wind turbine blades are one of the main components of wind turbine generators. Before installation, they require full-scale testing, which involves mounting the full-scale blades on a large test bench using bolts and flanges. Modern large, flexible wind turbine blades often exceed 100 meters in length and can weigh up to 50 tons per blade. During full-scale testing, the root connection of the blade bears enormous loads, necessitating the bolts connecting the test bench and flanges to be of considerable length and weight. During test preparation, the installation of the bolts on the test bench involves lifting the bolts to a designated position and then screwing them in with nuts on the outside of the test bench for positioning. Nuts are then screwed in from the inside of the test bench, and finally, the nuts on both sides are tightened. This process often requires at least two test personnel to manually support the bolts, resulting in low efficiency and excessive manpower consumption. Utility Model Content

[0003] In view of the above-mentioned problems existing in the prior art, the purpose of this application is to provide a support tool for blade testing.

[0004] The technical solution adopted in this application embodiment is a support tool for blade testing, comprising: The support is movably mounted on the test bench surface; A pushing mechanism is mounted on the support and can move synchronously with the support. The pushing mechanism includes a telescopic pushing component, which is used to abut against one end of a screw that passes through the connection hole of the test bench, so as to keep the screw in a stable state. A drive mechanism, fixed to the bracket and connected to the push mechanism, is used to drive the push mechanism to move vertically relative to the bracket, so that the pushing component of the push mechanism can abut against the screws passing through different connection holes of the test bench.

[0005] In an optional embodiment, the pushing mechanism includes a hydraulic cylinder and a hydraulic rod. One end of the hydraulic rod is disposed inside the hydraulic cylinder and can extend and retract along the axial direction of the hydraulic cylinder under hydraulic drive, so that the other end of the hydraulic rod abuts against or separates from one end of the screw, and the hydraulic rod forms the pushing component.

[0006] In an optional embodiment, the support includes a base and a frame disposed on the base, the frame being provided with a guide groove; the hydraulic cylinder is disposed in the guide groove and can move along the guide groove under the driving action of the driving mechanism to change the position of the hydraulic cylinder and the hydraulic rod in the vertical direction.

[0007] In an optional embodiment, the hydraulic cylinder is provided with a U-shaped bracket, and the inner side of the U-shaped bracket is provided with multiple supporting pulleys. The multiple supporting pulleys abut against different outer sides of the frame and form a sliding fit to support the hydraulic cylinder, so that the hydraulic cylinder can slide relative to the frame.

[0008] In an optional embodiment, the frame includes a main frame and an auxiliary frame, both of which are long rods. The lower end of the main frame is fixed to the base, the upper end of the auxiliary frame is connected to the lower middle part of the main frame, and the lower end of the auxiliary frame is connected to the base, so that the main frame, auxiliary frame, and base form a triangle. The guide groove is provided on the main frame and extends along the length of the main frame.

[0009] In an optional embodiment, the support pulley includes two first support pulleys and two second support pulleys. The two first support pulleys are respectively disposed on two opposite arms of the U-shaped bracket and respectively abut against two opposite outer surfaces of the main frame. Two second support pulleys are respectively located on the bottom of the U-shaped bracket and on both sides of the hydraulic cylinder, and respectively abut against the outer side of the main frame facing the bottom of the U-shaped bracket; The axis of the first support pulley is perpendicular to the axis of the second support pulley, and the axis of the first support pulley is parallel to the axis of the hydraulic cylinder.

[0010] In an optional embodiment, the driving mechanism includes a motor, a chain, and a tightening / releasing mechanism. The motor is fixed to the bracket, and the tightening / releasing mechanism includes a winch. The motor is connected to the winch and drives the winch to rotate. One end of the chain is wound around the winch, and the other end is connected to the hydraulic rod. When the motor rotates in the forward or reverse direction, it drives the winch to rotate to wind up or release the chain, thereby lifting the hydraulic rod upward or lowering the hydraulic rod under its own weight.

[0011] In an optional embodiment, the other end of the hydraulic rod is provided with a pusher plate with an outer diameter larger than that of the screw, and the periphery of the outer surface of the pusher plate is provided with a plurality of first LED beads.

[0012] In an optional embodiment, the outer surface of the push plate is provided with a concave-convex structure in the middle; the concave-convex structure is covered with second LED beads.

[0013] In an optional embodiment, the base is provided with multiple casters at its bottom, enabling the base to move and position the frame on the test bench surface; and / or The auxiliary frame is provided with weight reduction holes or weight reduction grooves.

[0014] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows: the support tool of this application can replace manual labor, provide support for the installation of screws on the test bench, reduce labor intensity, and improve test preparation efficiency.

[0015] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this application.

[0016] The overview of various implementations or examples of the technology described in this application is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0017] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The drawings generally illustrate various embodiments by way of example rather than limitation and, together with the description and claims, serve to illustrate the claimed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts.

[0018] Figure 1 This is a schematic diagram of the structure of the test bench according to an embodiment of this application.

[0019] Figure 2 This is a schematic diagram of the support tool for blade testing according to an embodiment of this application.

[0020] Figure 3 This is a schematic diagram of the structure after the main frame and the push mechanism are assembled according to an embodiment of this application.

[0021] Figure 4 This is a schematic diagram of the structure of the pushing mechanism and the U-shaped bracket after assembly according to an embodiment of this application.

[0022] Figure 5 for Figure 4 Enlarged view of part A in the middle.

[0023] Figure 6 This is a schematic diagram illustrating the usage state of the support tool on the test bench according to an embodiment of this application.

[0024] Figure 7 for Figure 6 Enlarged view of section B.

[0025] Figure label: 1-Bracket; 11-Frame; 111-Main frame; 112-Auxiliary frame; 113-Guide groove; 12-Base; 13-Roller; 2-Pushing mechanism; 21-Hydraulic cylinder; 22-Hydraulic rod; 23-U-shaped bracket; 231-Arm; 232-Bottom; 24-First support pulley; 25-Second support pulley; 26-Push plate; 27-First LED bead; 28-Second LED bead; 3-Drive mechanism; 4-blade; 5-Flange; 51-Flange hole; 6-Test bench; 61-Assembly surface; 62-Connecting hole; 63-Table surface; 7-Screw. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0027] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] To keep the following description of the embodiments of this application clear and concise, detailed descriptions of known functions and known components are omitted.

[0029] This application provides a support tool for blade testing. The blade 4 to be tested needs to be fixed to the test bench 6 by screws 7 in order to perform full-size testing.

[0030] like Figure 1 As shown, the blade 4 to be tested is equipped with a flange 5, and the test bench 6 has a mounting surface 61 for mounting the blade 4. The mounting surface 61 is inclined and has a plurality of connection holes 62 corresponding one-to-one with the flange holes 51 of the flange 5 (see...). Figure 7Multiple connecting holes 62 are arranged in a circle, with the axes of the connecting holes 62 forming a certain angle with the horizontal plane, so that the connecting holes 62 are inclined holes with one end lower on the inside of the test bench 6 and the other end higher on the outside of the test bench 6. Correspondingly, when the flange 5 is placed on the assembly surface 61, its flange hole 51 is also inclined. When it is necessary to fix the blade 4 to the test bench 6, first pass the screw 7 through the corresponding flange hole 51 and connecting hole 62, and then screw nuts into both ends of the screw 7 to fasten the flange 5 and the test bench 6 together. Since the connecting hole 62 and flange hole 51 are inclined, the screw 7 is also inclined. Under its own weight, the first end of the screw 7 that extends into the inside of the test bench 6 tends to slide downwards. Therefore, the first end of the screw 7 needs to be supported before the nuts can be screwed in.

[0031] The support tool of this application embodiment can be used on the test bench 6 to support the first end of the screw 7 so that a nut can be screwed into the second end of the screw 7 located outside the test bench 6.

[0032] like Figure 1 As shown in this embodiment, the support tool includes a bracket 1, a pushing mechanism 2, and a driving mechanism 3. The test bench 6 also has a generally horizontal table surface 63. The bracket 1 is movably mounted on the table surface 63 of the test bench 6. The pushing mechanism 2 is mounted on the bracket 1 and can move synchronously with the bracket 1. The pushing mechanism 2 includes a telescopic pushing member, which is used to abut against the first end of the screw 7 passing through the flange hole 51 of the flange 5 and the connection hole 62 of the test bench 6, so as to keep the screw 7 in a stable state. The driving mechanism 3 is fixed to the bracket 1 and connected to the pushing mechanism 2, and is used to drive the pushing mechanism 2 to move vertically relative to the bracket 1, so that the pushing member of the pushing mechanism 2 can abut against the screw 7 passing through different connection holes 62 of the test bench 6 respectively.

[0033] The support tool in this embodiment utilizes its pushing mechanism 2 to abut against the first end of the screw 7 extending into the test bench 6, providing support for the screw 7 and facilitating the screwing in of the nut at the second end of the screw 7 located outside the test bench 6. Furthermore, by utilizing the horizontal movement of the bracket 1 on the horizontal platform 63, combined with the vertical movement (lifting and lowering) of the pushing mechanism 2 under the action of the drive mechanism 3, the pushing component of the pushing mechanism 2 can be aligned with each of the connecting holes 62, thus supporting the first end of the screw 7 passing through each connecting hole 62 and completing the screwing in of the nut on all screw 7.

[0034] In some embodiments, such as Figures 2 to 4As shown, the pushing mechanism 2 includes a hydraulic cylinder 21 and a hydraulic rod 22. One end of the hydraulic rod 22 is located inside the hydraulic cylinder 21 and can extend and retract along the axial direction of the hydraulic cylinder 21 under the hydraulic pressure, so that the other end of the hydraulic rod 22 abuts against or separates from the first end of the screw 7, forming a pushing component. When the other end of the hydraulic rod 22 abuts against the first end of the screw 7, a force is applied to the screw 7 along the axial and vertical directions to keep the screw 7 stable. Using a hydraulic cylinder 21 and a hydraulic rod 22 as the pushing mechanism 2 can withstand huge loads and provide large thrust, especially suitable for large, long, flexible wind turbine blades 4 weighing tens of tons; moreover, the hydraulic rod 22 moves smoothly during the pushing process, avoiding impact or vibration in the mechanical structure; the hydraulic cylinder 21 and the hydraulic rod 22 have a compact structure, which can provide powerful thrust in a small space; its transmission efficiency is high, and it can complete the transmission of large forces in a short time, making it very suitable for environments with limited space but requiring high efficiency.

[0035] In some embodiments, such as Figure 2 As shown, the support 1 includes a base 12 and a frame 11 mounted on the base 12. The frame 11 is provided with a guide groove 113. The hydraulic cylinder 21 is disposed in the guide groove 113 and can move along the guide groove 113 under the driving action of the drive mechanism 3, thereby changing the vertical position of the hydraulic cylinder 21 and the hydraulic rod 22. By providing the guide groove 113 on the frame 11, the stability of the hydraulic rod 22 during lifting and lowering is facilitated.

[0036] In some embodiments, such as Figure 3 and Figure 4 As shown, the hydraulic cylinder 21 is equipped with a U-shaped bracket 23. Multiple support pulleys are located on the inner side of the U-shaped bracket 23. These support pulleys abut against different outer surfaces of the frame 11, forming a sliding fit to support the hydraulic cylinder 21 and allow it to slide relative to the frame 11. By providing support pulleys, not only is a sliding fit between the hydraulic cylinder 21 and the frame 11 achieved, but the support pulleys are also confined within the guide grooves 113 of the frame 11, ensuring smooth lifting and lowering of the hydraulic cylinder 21 and saving power to the drive mechanism 3.

[0037] For example, such as Figure 2 and Figure 3 As shown, the frame 11 includes a main frame 111 and an auxiliary frame 112, both of which are long rods. The lower end of the main frame 111 is fixed to the base 12, the upper end of the auxiliary frame 112 is connected to the lower middle part of the main frame 111, and the lower end of the auxiliary frame 112 is connected to the base 12, so that the main frame 111, the auxiliary frame 112, and the base 12 form a triangle. A guide groove 113 is provided on the main frame 111 and extends along the length of the main frame 111. The frame 11 has a simple and reasonable structure and high stability.

[0038] Understandably, since the screw 7 is inclined, the hydraulic rod 22, which abuts against the screw 7, should also be inclined, with the inclination angle and direction of the hydraulic rod 22 consistent with those of the screw 7, meaning the screw 7 and hydraulic rod 22 are coaxially arranged. Correspondingly, the hydraulic cylinder 21 is also inclined, with the same inclination angle and direction as the hydraulic rod 22. To facilitate the smooth sliding of the hydraulic cylinder 21 along the guide groove 113, the main frame 111 is also designed to be inclined, with the same inclination angle and direction as the hydraulic cylinder 21. The extension direction of the guide groove 113 on the main frame 111 is perpendicular to the axial direction of the hydraulic cylinder 21. That is, the long rod-shaped main frame 111 is perpendicular to the axis of the hydraulic cylinder 21.

[0039] In some embodiments, such as Figure 4 As shown, the support pulleys include two first support pulleys 24 and two second support pulleys 25. The two first support pulleys 24 are respectively mounted on two opposite arms 231 of the U-shaped bracket 23 and abut against two opposite outer surfaces of the main frame 111. The two second support pulleys 25 are respectively mounted on the bottom 232 of the U-shaped bracket 23, located on both sides of the hydraulic cylinder 21, and abut against the outer surfaces of the main frame 111 facing the bottom 232 of the U-shaped bracket 23. The axes of the first support pulleys 24 and 25 are perpendicular to each other, and parallel to the axis of the hydraulic cylinder 21. By using the first support pulleys 24 and 25 arranged in different directions, a balanced and stable support can be formed for the hydraulic cylinder 21, and multiple rolling connections can be established with the outer surface of the main frame 111, improving the operational smoothness of the hydraulic cylinder 21.

[0040] Specifically, such as Figure 3 As shown, the main frame 111 is a long rod with a rectangular cross-section, and has two opposing first outer surfaces and two opposing second outer surfaces. The guide groove 113 extends through the two opposing second outer surfaces. Figure 4As shown, the U-shaped bracket 23 includes two opposing arms 231 and a bottom 232 connected to each of the two arms 231. A hydraulic cylinder 21 passes through the bottom 232 and forms a stable connection with it. The two arms 231 of the U-shaped bracket 23 are located on the two first outer sides of the main frame 111. The bottom 232 of the U-shaped bracket 23 faces one of the second outer sides of the main frame 111. Two first support rollers 13 are respectively disposed on the two arms 231 of the U-shaped bracket 23 and are in contact with the two first outer sides of the main frame 111, forming a rolling connection. Two second support rollers 13 are respectively disposed on the portions of the bottom 232 of the U-shaped bracket 23 located on both sides of the hydraulic cylinder 21, and are in contact with the portions of the main frame 111 on both sides of the second outer side of the bottom 232 of the U-shaped bracket 23 facing the bottom 232 of the U-shaped bracket, forming a rolling connection. That is, the second outer side of the bottom 232 of the main frame 111 facing the U-shaped bracket 23 includes two parts located on both sides of the guide groove 113, and the two parts are respectively in contact with the two second support rollers 13.

[0041] The specific structural form of the drive mechanism 3 in this application embodiment is not specifically limited, as long as it can realize the vertical movement of the hydraulic rod 22. For example, a lifting mechanism commonly used for lifting and lowering objects in the prior art can be used.

[0042] For example, the drive mechanism 3 includes a motor, a chain, and a tightening / releasing mechanism. The motor is fixed to the bracket 1 (the top of the main frame 111). The motor is connected to the tightening / releasing mechanism to drive its rotation. One end of the chain is connected to the tightening / releasing mechanism, and the other end is connected to the hydraulic rod 22. The motor can rotate in both directions. When the motor rotates forward, the chain winds up onto the tightening / releasing mechanism, causing the chain released from the mechanism to gradually shorten, and the hydraulic rod 22 is pulled upward. When the motor rotates in reverse, the chain is gradually released from the tightening / releasing mechanism, the chain gradually lengthens, and the hydraulic rod 22 descends under its own weight, thus realizing the vertical movement of the hydraulic rod 22.

[0043] Specifically, the tightening and loosening mechanism includes a winch, a motor connected to the winch for driving the winch to rotate, one end of a chain wound around the winch, and the other end connected to the hydraulic rod 22. When the motor rotates in the forward or reverse direction, it drives the winch to rotate to wind up or release the chain, so as to lift the hydraulic rod 22 upward or lower the hydraulic rod 22 under its own weight.

[0044] In another embodiment, the drive mechanism 3 may also include a motor, a chain, a drive wheel, and a driven wheel. The motor and drive wheel are both fixed to the top of the bracket 1 near the main frame 111. The motor is connected to the drive wheel and drives its rotation. The driven wheel is fixed to the lower part of the main unit. The chain passes around the drive wheel and driven wheel, and the hydraulic rod 22 is fixed to the chain. The motor can rotate in both directions. When the motor starts and rotates in the forward or reverse direction, it drives the drive wheel to rotate in the forward or reverse direction. The drive wheel then drives the chain to rotate in the forward or reverse direction, thereby causing the hydraulic rod 22 to rise and fall.

[0045] Since the structure of the aforementioned drive mechanism 3 is relatively clear, it is not shown in the figure.

[0046] In some embodiments, such as Figure 5 As shown, in this embodiment, the other end of the hydraulic rod 22 is provided with a pusher plate 26 whose outer diameter is larger than that of the screw 7. By setting the pusher plate 26 with a larger outer diameter, it is easier to interact with the first end of the screw 7, improving the accuracy of the fit. Multiple first LED beads 27 are provided around the periphery of the outer surface of the pusher plate 26. During testing, the support tool is moved until the pusher plate 26 of its hydraulic rod 22 is aligned with the connecting hole 62 and the corresponding flange hole 51 on the test bench 6 where the screw 7 will be inserted. The first LED beads 27 make the outline of the hole visible. From the outside of the test bench 6, the connecting hole 62 appears brighter than other connecting holes 62, allowing the tester to quickly locate the connecting hole 62 and flange hole 51 where the screw 7 needs to be inserted, and smoothly insert the screw 7. In other words, the first LED beads 27 assist the tester in quickly aligning and positioning the flange hole 51 and the connecting hole 62, improving work efficiency.

[0047] Furthermore, continue to combine Figure 5 The outer surface of the push plate 26 has a concave-convex structure in the middle to increase friction and prevent slippage when the push plate 26 contacts the first end of the screw 7, thus providing a stabilizing effect. Preferably, the concave-convex structure is filled with second LED beads 28 to further improve the brightness of the connection hole 62 and flange hole 51 through which the screw 7 needs to pass.

[0048] In some embodiments, the bottom 232 of the base 12 is provided with a plurality of rollers 13, which enable the base 12 to move the frame 11 on the table surface 63 of the test bench 6, thereby realizing the free movement and positioning of the entire support tool in the horizontal direction. The auxiliary frame 112 is provided with weight-reducing holes or weight-reducing grooves to reduce the overall weight of the support tool.

[0049] The following describes the usage process of the support tools in the embodiments of this application: like Figure 6As shown, firstly, the support tool of this application is placed on the platform 63 inside the test bench 6; then, the bracket 1 is pushed, causing the entire support tool to move horizontally, so that the hydraulic rod 22 is directly below or above the connection hole 62 through which the screw rod 7 needs to be inserted. Next, the drive mechanism 3 is activated, driving the hydraulic rod 22 to move upward or downward, so that one end of the hydraulic rod 22 is directly opposite the connection hole 62 through which the screw rod 7 needs to be inserted, and illuminating the connection hole 62; the tester inserts the first end of the screw rod 7 into the illuminated flange hole 51, and through the corresponding connection hole 62; then, the push mechanism 2 is activated, causing its hydraulic rod 22 to move towards the first end of the screw rod 7 and abut against the first end of the screw rod 7, providing support and positioning for the screw rod 7. After that, the tester can screw in a nut at the second end of the screw rod 7 to fix the screw rod 7 from the outside; then, the tester screws in a nut at the first end of the screw rod 7 again, and finally tightens the nuts on both sides. The installation of one screw rod 7 is completed. Repeat the above steps to align the hydraulic rod 22 with the connecting hole 62 where the screw 7 needs to be inserted, until all the screws 7 in the flange holes 51 on the flange 5 are fixed. This completes the installation of the blade 4 on the test bench 6, and the blade 4 can be tested at full size.

[0050] The above description is intended to be illustrative and not restrictive. Those skilled in the art can make variations, modifications, substitutions, and alterations to the above embodiments within the scope of this disclosure. Moreover, the above examples (or one or more of them) can be used in combination with each other, and these embodiments can be combined with each other in various combinations or arrangements.

Claims

1. A support tool for blade testing, characterized in that, The support tools include: The support is movably mounted on the test bench surface; A pushing mechanism is mounted on the support and can move synchronously with the support. The pushing mechanism includes a telescopic pushing component, which is used to abut against one end of a screw that passes through the connection hole of the test bench, so as to keep the screw in a stable state. A drive mechanism, fixed to the bracket and connected to the push mechanism, is used to drive the push mechanism to move vertically relative to the bracket, so that the pushing component of the push mechanism can abut against the screws passing through different connection holes of the test bench.

2. The support tool for blade testing according to claim 1, characterized in that, The pushing mechanism includes a hydraulic cylinder and a hydraulic rod. One end of the hydraulic rod is located inside the hydraulic cylinder and can extend and retract along the axial direction of the hydraulic cylinder under hydraulic drive, so that the other end of the hydraulic rod abuts or separates from one end of the screw. The hydraulic rod forms the pushing component.

3. The support tool for blade testing according to claim 2, characterized in that, The support includes a base and a frame mounted on the base. The frame is provided with a guide groove. The hydraulic cylinder is located in the guide groove and can move along the guide groove under the driving action of the driving mechanism to change the position of the hydraulic cylinder and the hydraulic rod in the vertical direction.

4. The support tool for blade testing according to claim 3, characterized in that, The hydraulic cylinder is provided with a U-shaped bracket, and the inner side of the U-shaped bracket is provided with multiple supporting pulleys. The multiple supporting pulleys abut against different outer sides of the frame and form a sliding fit to support the hydraulic cylinder, so that the hydraulic cylinder can slide relative to the frame.

5. The support tool for blade testing according to claim 4, characterized in that, The frame includes a main frame and an auxiliary frame, both of which are long rods. The lower end of the main frame is fixed to the base, the upper end of the auxiliary frame is connected to the lower middle part of the main frame, and the lower end of the auxiliary frame is connected to the base, so that the main frame, auxiliary frame, and base form a triangle. The guide groove is provided on the main frame and extends along the length of the main frame.

6. The support tool for blade testing according to claim 5, characterized in that, The support pulleys include two first support pulleys and two second support pulleys. The two first support pulleys are respectively disposed on two opposite arms of the U-shaped bracket and respectively abut against two opposite outer surfaces of the main frame. Two second support pulleys are respectively located on the bottom of the U-shaped bracket and on both sides of the hydraulic cylinder, and respectively abut against the outer side of the main frame facing the bottom of the U-shaped bracket; The axis of the first support pulley is perpendicular to the axis of the second support pulley, and the axis of the first support pulley is parallel to the axis of the hydraulic cylinder.

7. The support tool for blade testing according to claim 2, characterized in that, The drive mechanism includes a motor, a chain, and a tightening / releasing mechanism. The motor is fixed to the bracket, and the tightening / releasing mechanism includes a winch. The motor is connected to the winch and drives the winch to rotate. One end of the chain is wound around the winch, and the other end is connected to the hydraulic rod. When the motor rotates in the forward or reverse direction, it drives the winch to rotate to wind up or release the chain, so as to lift the hydraulic rod upward or lower the hydraulic rod under its own weight.

8. The support tool for blade testing according to claim 2, characterized in that, The other end of the hydraulic rod is provided with a pusher plate with an outer diameter larger than that of the screw, and the periphery of the outer surface of the pusher plate is provided with a plurality of first LED beads.

9. The support tool for blade testing according to claim 8, characterized in that, The outer surface of the push plate has a concave-convex structure in the middle; the concave-convex structure is covered with second LED beads.

10. The support tool for blade testing according to claim 5, characterized in that, The base is equipped with multiple casters at its bottom, enabling the base to move and position the frame on the test bench surface; and / or The auxiliary frame is provided with weight reduction holes or weight reduction grooves.

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