Blade strength detection device for wind driven generator

Abstract

The invention relates to the technical field of wind energy industry, in particular to a strength detection device of a blade for a wind driven generator. The rotating mechanism is arranged at the driving end of the first driving part; the supporting frame is arranged on the first driving piece; the movable frame can rotate relative to the supporting frame; the sliding frame is arranged on the supporting frame in a sliding mode, and the sliding frame controls the rotatable angle of the movable frame by controlling the sliding position of the sliding frame; the pushing mechanism is used for controlling the movable frame to deflect; deflection of the movable frame is limited by adjusting the position of the sliding frame, the movable frame is controlled to deflect in cooperation with the pushing mechanism, the form of the pendulum bob piece can be changed, force in different directions and different magnitudes can be simulated conveniently, and the simulation precision is improved. The standardization degree of detection can be improved by detecting the mixed applied force, and the weak part of the fan blade can be found more easily.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind power industry, and in particular to a strength detection device for a blade of a wind turbine. BACKGROUND

[0002] As the core equipment of the wind power industry, the blade of a wind turbine needs to serve in a harsh environment for more than 20 years, so the blade strength test is a key link to ensure the reliability of the unit.

[0003] The current mainstream test method has the following technical bottlenecks: the patent with publication number CN113982849B uses extrusion and high-speed rotation to test the strength of the blade, however, due to the large size of the fan blade, when testing in this way, the equipment has a large volume and occupies a large area, and the equipment cost is high, in addition, the existing cable traction and centrifugal structure test can only simulate the shaking in the vertical and horizontal directions, and cannot reproduce the multi-axial load such as shear and torsion that the blade bears in actual operation, the cable traction and centrifugal structure test are both vertical and horizontal shaking of the blade, so the stress condition of the fan blade is relatively limited, which is not conducive to simulating the real working condition, and this limited test method cannot accurately find the weak point of the blade strength, and needs to change the connection position of the cable and the fan to change the test state, which is not efficient.

[0004] Therefore, the present application provides a strength detection device for a blade of a wind turbine. SUMMARY

[0005] In view of the above or the problems existing in the prior art, the present application is proposed.

[0006] Therefore, the present application aims to provide a strength detection device for a blade of a wind turbine.

[0007] To solve the above technical problems, the present application provides the following technical scheme: a strength detection device for a blade of a wind turbine, comprising,

[0008] a first driving member;

[0009] a rotating mechanism arranged at the driving end of the first driving member;

[0010] a support frame arranged on the first driving member;

[0011] a movable frame capable of rotating relative to the support frame;

[0012] a sliding frame slidingly arranged on the support frame, the sliding frame controls the rotatable angle of the movable frame by controlling the sliding position thereof;

[0013] a pushing mechanism for controlling the deflection of the movable frame;

[0014] a pendulum piece arranged at the output end of the rotating mechanism;

[0015] when the sliding frame is at the first position, the rotatable angle of the movable frame is zero;

[0016] when the sliding frame is at the second position, the rotatable angle of the movable frame is at least ninety degrees;

[0017] when the sliding frame is at the third position, the rotatable angle of the movable frame is at least ninety degrees;

[0018] the rotatable angles of the sliding frame at the second position and the third position are opposite.

[0019] As a preferred scheme of the strength detection device for the blade of the wind driven generator, wherein: the support frame is provided with a first hole and a second hole;

[0020] the movable frame is provided with a first clamping shaft and a second clamping shaft;

[0021] the first hole and the first clamping shaft are movably connected, and the second hole and the second clamping shaft are movably connected;

[0022] the sliding frame is provided with a clamping groove.

[0023] As a preferred scheme of the strength detection device for the blade of the wind driven generator, wherein: the clamping groove is provided with a first clamping end and a second clamping end;

[0024] the distance between the end faces of the first clamping end and the second clamping end is equal to the distance between the shaft centers of the first clamping shaft and the second clamping shaft.

[0025] As a preferred scheme of the strength detection device for the blade of the wind driven generator, wherein: when the sliding frame is at the first position, the first clamping end and the first clamping shaft are in contact, and the second clamping end and the second clamping shaft are in contact;

[0026] when the sliding frame is at the second position, only the first clamping end and the first clamping shaft are in contact;

[0027] when the sliding frame is at the third position, only the second clamping end and the second clamping shaft are in contact.

[0028] As a preferred scheme of the strength detection device for the blade of the wind driven generator, wherein: the support frame is provided with a limiting block, and the sliding frame is provided with a limiting groove;

[0029] the limiting block and the limiting groove are movably connected.

[0030] As a kind of preferred scheme of the strength detection device for the blade of wind driven generator of the present application, wherein: the rotating mechanism includes the first rotating shaft connected with the driving end of the first driving member, and the first inserting rod arranged at the end of the first rotating shaft;

[0031] The rotating mechanism further includes the second rotating shaft, and the second inserting rod arranged at the end of the second rotating shaft;

[0032] The first rotating shaft is rotatably connected with the support frame, and the second rotating shaft is rotatably connected with the movable frame.

[0033] As a kind of preferred scheme of the strength detection device for the blade of wind driven generator of the present application, wherein: the first inserting rod is arranged in a plurality of and arranged in a circumferential array at the end of the first rotating shaft;

[0034] The second inserting rod is arranged in a plurality of and arranged in a circumferential array at the end of the second rotating shaft.

[0035] As a kind of preferred scheme of the strength detection device for the blade of wind driven generator of the present application, wherein: the movable frame is rotatably arranged with a rotating sleeve, and the rotating sleeve is slidably connected with the second rotating shaft;

[0036] Further comprising a spring sleeved on the outer wall of the second rotating shaft;

[0037] The pendulum member is arranged on the rotating sleeve.

[0038] As a kind of preferred scheme of the strength detection device for the blade of wind driven generator of the present application, wherein: the movable frame is arranged with a limiting shaft.

[0039] The pushing mechanism includes the second driving member arranged on the support frame, and the pushing frame arranged at the driving end of the second driving member;

[0040] The pushing frame is slidably connected with the limiting shaft.

[0041] As a kind of preferred scheme of the strength detection device for the blade of wind driven generator of the present application, wherein: the movable frame is arranged with an extension member, and the extension member can control the movable frame to slide outside the support frame.

[0042] The wind turbine blade strength detection device has the advantages that the position of the sliding frame is adjusted to limit the deflection of the movable frame, the movable frame is deflected by cooperating with the pushing mechanism, the form of the pendulum piece is changed, different directions and different sizes of force are simulated, the two pendulum pieces can generate force, the device can be applied to tests in various states such as bending, stretching, bending, pressing down and twisting, the accuracy of the wind turbine blade strength detection is improved, the detection efficiency is improved due to the application of force in multiple directions, the detection process is no longer single, the standardization degree of the detection is improved by applying mixed force, and the weak part of the wind turbine blade is more easily found. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0044] Figure 1 It is a whole structure schematic diagram of the wind turbine blade strength detection device.

[0045] Figure 2 It is a connection structure schematic diagram of the rotating mechanism, the support frame, the movable frame, the sliding frame, the pushing mechanism and the pendulum piece of the wind turbine blade strength detection device.

[0046] Figure 3 It is a connection structure schematic diagram of the support frame and the sliding frame of the wind turbine blade strength detection device.

[0047] Figure 4 It is a partial cross-sectional structure schematic diagram of the wind turbine blade strength detection device.

[0048] Figure 5 It is a structure schematic diagram of the first inserting rod and the second inserting rod in the inserted state of the wind turbine blade strength detection device.

[0049] Figure 6 It is a first use state reference diagram of the wind turbine blade strength detection device.

[0050] Figure 7 It is a second use state reference diagram of the wind turbine blade strength detection device.

[0051] Figure 8 It is a third use state reference diagram of the wind turbine blade strength detection device.

[0052] Figure 9Reference is made to Fig. 4 for the fourth use state of the strength detection device for the blade of the wind driven generator.

[0053] Figure 10 Reference is made to Fig. 3 for the process of generating relative rotation between the second rotating shaft and the first rotating shaft of the strength detection device for the blade of the wind driven generator.

[0054] In the figure: 1, first driving member; 2, rotating mechanism; 21, first rotating shaft; 211, first inserting rod; 22, second rotating shaft; 221, second inserting rod; 23, rotating sleeve; 24, spring; 3, support frame; 31, first hole; 32, second hole; 33, limiting block; 4, movable frame; 41, first clamping shaft; 42, second clamping shaft; 43, limiting shaft; 5, sliding frame; 51, clamping groove; 511, first clamping end; 512, second clamping end; 52, telescopic member; 53, limiting groove; 6, pushing mechanism; 61, second driving member; 62, pushing frame; 7, pendulum member. DETAILED DESCRIPTION

[0055] In order to make the above objectives, characteristics and advantages of the present application more apparent, a detailed description of the specific embodiments of the present application will be given below with reference to the accompanying drawings.

[0056] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0057] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is separate or alternative to other embodiments.

[0058] Embodiment 1, with reference to Figure 1 and Figure 4 For the first embodiment of the present application, the embodiment provides a strength detection device for the blade of the wind driven generator, which comprises: a first driving member 1; a rotating mechanism 2 arranged on the driving end of the first driving member 1; in this embodiment, the first driving member 1 is a rotating motor, which is used to provide rotating power for the rotating mechanism 2, and the rotating mechanism 2 can be controlled to rotate by the first driving member 1.

[0059] A support frame 3 arranged on the first driving member 1; a movable frame 4 capable of relatively rotating with the support frame 3; wherein the support frame 3 and the movable frame 4 are arranged outside the rotating mechanism 2, and the rotating mechanism 2 is a transmission structure capable of following the movement of the movable frame 4 and changing shape.

[0060] A sliding frame 5 is arranged on the support frame 3, and the rotating angle of the movable frame 4 is controlled by controlling the sliding position of the sliding frame 5;

[0061] A pushing mechanism 6 is arranged for controlling the deflection of the movable frame 4, and the operation of the pushing mechanism 6 can push the movable frame 4 to generate relative rotation between the movable frame 4 and the support frame 3.

[0062] A pendulum part 7 is arranged at the output end of the rotating mechanism 2, and the pendulum part 7 can rotate correspondingly with the rotation of the rotating mechanism 2.

[0063] When the sliding frame 5 is at the first position, the rotating angle of the movable frame 4 is zero; refer to Figure 3 , wherein, Figure 3 The position shown in the figure is that the sliding frame 5 is at the first position, and at this time, the movable frame 4 cannot rotate with the support frame 3, and can maintain stable support for the pendulum part 7.

[0064] When the sliding frame 5 is at the second position, the rotating angle of the movable frame 4 is at least ninety degrees; when the sliding frame 5 is at the third position, the rotating angle of the movable frame 4 is at least ninety degrees; the rotating angles of the sliding frame 5 at the second position and the third position are opposite, the angle deflection of the movable frame 4 is controlled by the pushing mechanism 6, so as to change the orientation of the pendulum part 7, and the acting force generated by the rotation of the pendulum part 7 can be changed, and then the acting force during testing can be adjusted.

[0065] It should be noted that the rotating mechanism 2, the support frame 3, the movable frame 4, the sliding frame 5, and the pushing mechanism 6 and the pendulum part 7 are symmetrically arranged at both sides of the first driving part 1.

[0066] In use, the bottom of the first driving part 1 is provided with a support base, and a mold base matched with the shape of the fan is arranged below the support base, the support base is fixed on the fan blade to be tested through the mold base, and the connecting line of the two pendulum parts 7 is arranged vertically to the fan blade.

[0067] , wherein, refer to Figure 1 When the sliding frame 5 is at the first position, the first driving part 1 can drive the two pendulum parts 7 to rotate synchronously and in the same direction when the rotating mechanism 2 rotates, and at this time, the centrifugal force generated by the rotation of the pendulum part 7 can press the fan blade, so as to simulate the reciprocating stress in the vertical direction. Since the two pendulum parts 7 rotate synchronously and in the same direction, the acting forces generated by the two pendulum parts 7 during rotation can be superimposed on each other, and the force applied to the fan each time in this state is larger, but it is only suitable for single-direction force detection.

[0068] , refer to Figure 6 , Figure 6The direction indicated by the middle arrow is the rotation direction of the pendulum member 7. By controlling the sliding frame 5 to slide downward to be located in the second position, the movable frame 4 can be deflected upward relative to the support frame 3. The movable frame 4 is controlled to rotate by the pushing mechanism 6 so that the movable frame 4 and the support frame 3 are perpendicular to each other. Figure 6 In the figure, the pendulum members 7 on both sides are rotated upwards. When the rotating mechanism 2 rotates, the two pendulum members 7 will be in a relative state and rotate in opposite directions. At this time, when the first driving member 1 controls the rotating mechanism 2 to rotate, the movement of the pendulum member 7 will generate centrifugal force in the placement direction of the fan blades, simulating the tensile and bending resistance of the fan blades.

[0069] Similarly, by controlling the sliding frame 5 to slide upward so that it is in the third position, the movable frame 4 can now produce a downward deflection relative to the support frame 3, and the movable frame 4 is controlled to rotate by the pushing mechanism 6 so that the movable frame 4 and the support frame 3 are in a perpendicular state to each other, and the pendulum members 7 on both sides are rotated to the bottom. At this time, the force generated by the movement of the pendulum member 7 is similar to the force generated when the pendulum members 7 on both sides are rotated to the top, but the difference is that since a support base is provided at the bottom of the first driving member 1, that is, the equipment is placed on the fan blades, the distance between the fan blades and the plane formed by the rotation of the pendulum member 7 is different, that is, the torque will change. Therefore, when the force of the pendulum member 7 acts on the fan blades, the force applied to the fan blades will change due to the change in torque.

[0070] The two usage methods described above are only examples and are not intended to be limiting. In actual use, the inclination angles of the pendulum members 7 on both sides can also be adjusted synchronously to continuously change the torque of the applied force to simulate the tensile and flexural resistance under different forces. That is, the angle between the support frame 3 and the movable frame 4 is not limited to the vertical state, and the angle between the two can also be greater than ninety degrees.

[0071] In addition, refer to Figure 7 , Figure 7 The direction indicated by the middle arrow is the rotation direction of the pendulum member 7. The sliding frame 5 on the left is in the first position, that is, the movable frame 4 and the support frame 3 are in a straight line. The sliding frame 5 on the right is in the second position, that is, the movable frame 4 and the support frame 3 are in a vertical state. At this time, when the rotating mechanism 2 rotates, the moving surfaces formed by the movement of the pendulum members 7 on both sides will be perpendicular to each other. At this time, the two pendulum members 7 can simultaneously form multi-directional forces to act on the fan blades, which can effectively test the torsion resistance and bending resistance of the fan blades.

[0072] Similarly, the left sliding frame 5 can be placed in the first position and the right sliding frame 5 can be placed in the third position. Figure 7The forces generated in the states shown in FIG are similar, but the force generated when the pendulum member 7 on the right rotates will change due to the change in torque, so a variety of force states can be simulated.

[0073] In addition, you can Figure 7 The states of the pendulum members 7 on both sides are adjusted oppositely, that is, the sliding frame 5 on the left is in the second position, and the sliding frame 5 on the right is in the first position. It should be noted that the pendulum members 7 on both sides are offset from the center of the blade, and the forces generated by the pendulum members 7 on both sides act on the fan blades differently. When the states of the pendulum members 7 on both sides are swapped, the force states on both sides of the fan blades will also change. In addition, the direction and magnitude of the force can be changed by controlling the change in the angle between the support frame 3 and the movable frame 4 to simulate the forces acting on the fan blades in different states.

[0074] Reference Figure 8 , Figure 8 In the state shown, the sliding frame 5 on the left is in the third position, and the sliding frame 5 on the right is in the second position. At this time, the rotation directions of the two pendulum members 7 are the same, but the torques acting on the fan blades will be different. The pendulum member 7 on the left is close to the fan blades, so the force applied will be relatively smaller than the pendulum member 7 on the right. This can simulate two different forces acting synchronously on the fan. Similarly, the direction and magnitude of the force can also be adjusted in combination with the change in the angle between the support frame 3 and the movable frame 4.

[0075] The several working modes shown above are only examples of the operating modes of the present invention. In actual application, the position and angle of the pendulum member 7 can be adjusted according to the force requirements. During the operation of the pendulum member 7, the forces generated by the two pendulum members 7 will synthesize and offset each other, so that multiple ways of applying force can be simulated.

[0076] Specifically, a limiting shaft 43 is provided on the movable frame 4; the pushing mechanism 6 includes a second driving member 61 provided on the support frame 3, and a pushing frame 62 provided at the driving end of the second driving member 61; in this embodiment, the second driving member 61 is a hydraulic motor, and the pushing frame 62 is slidingly connected to the limiting shaft 43. The rotation of the pushing frame 62 is controlled by the second driving member 61, so that the movable frame 4 can be rotated.

[0077] Furthermore, the sliding frame 5 is provided with a telescopic member 52, which can control the sliding frame 5 to slide outside the support frame 3. The telescopic member 52 is a hydraulic telescopic device, such as a hydraulic rod. Figure 4 The hydraulic rod is fixedly connected to the bottom of the support frame 3 through the connecting frame, and the sliding frame 5 can be controlled to slide outside the support frame 3 through the extension and contraction of the telescopic member 52.

[0078] In summary, by adjusting the position of the sliding frame 5 to limit the deflection of the movable frame 4, cooperating with the pushing mechanism 6 to control the deflection of the movable frame 4, the form of the pendulum part 7 can be changed to simulate different directions and different sizes of force, and the pendulum parts 7 on both sides can generate acting force, which can be applied to bending, stretching, bending, pressing, twisting and other states for testing, so as to improve the accuracy of the strength detection of the fan blade, and the efficiency of the detection can be improved by applying forces in multiple directions, the detection process is no longer single, and the standardization degree of the detection can be improved by applying mixed forces for detection, which is easier to find the weak part of the fan blade.

[0079] Embodiment 2, refer to Figures 1-5 , for the second embodiment of the application, which is different from the previous embodiment, refer to Figure 5 , the support frame 3 is provided with a first hole 31 and a second hole 32;

[0080] refer to Figure 3 , the movable frame 4 is provided with a first clamping shaft 41 and a second clamping shaft 42;

[0081] Among them, the first hole 31 and the first clamping shaft 41 are movably connected, and the second hole 32 and the second clamping shaft 42 are movably connected; the sliding frame 5 is provided with a clamping groove 51.

[0082] Specifically, the clamping groove 51 is provided with a first clamping end 511 and a second clamping end 512;

[0083] The distance between the end faces of the first clamping end 511 and the second clamping end 512 is equal to the distance between the shaft centers of the first clamping shaft 41 and the second clamping shaft 42.

[0084] Further, when the sliding frame 5 is located at the first position, the first clamping end 511 and the first clamping shaft 41 are in contact, and the second clamping end 512 and the second clamping shaft 42 are in contact;

[0085] When the sliding frame 5 is located at the second position, only the first clamping end 511 and the first clamping shaft 41 are in contact;

[0086] When the sliding frame 5 is located at the third position, only the second clamping end 512 and the second clamping shaft 42 are in contact.

[0087] The support frame 3 is provided with a limiting block 33, and the sliding frame 5 is provided with a limiting groove 53;

[0088] The limiting block 33 and the limiting groove 53 are slidably connected.

[0089] The sliding connection of the limiting block 33 and the limiting groove 53 can increase the stability of the sliding frame 5.

[0090] It should be noted that the limiting shaft 43 is arranged at the middle part of the first clamping shaft 41 and the second clamping shaft 42.

[0091] The rest of the structure is the same as that of Example 1.

[0092] When using, refer to Figure 3 , Figure 3 In the state shown, the sliding frame 5 is located in the first position, the first clamping end 511 blocks the first clamping axis 41, and the second clamping end 512 blocks the second clamping axis 42. At this time, under the action of the sliding frame 5, the first clamping end 511 and the second clamping end 512 can be clamped in the first hole 31 and the second hole 32, so that the support frame 3 and the movable frame 4 are in a straight line.

[0093] Reference Figure 6 , the sliding frame 5 is controlled to slide down by the telescopic member 52, and the sliding frame 5 is in the second position. The first clamping end 511 and the first clamping shaft 41 are in conflict with each other. Due to the sliding down of the sliding frame 5, the second clamping end 512 will lose its conflict with the second clamping shaft 42. At this time, under the drive of the second driving member 61, the pushing frame 62 is controlled to rotate, and the pushing frame 62 drives the limiting shaft 43 to move. At this time, the movable frame 4 will rotate with the first clamping shaft 41 as the rotation axis. During the rotation process, the limiting shaft 43 slides in the pushing frame 62. By controlling the rotation angle of the pushing frame 62, the rotation angle of the movable frame 4 can be controlled.

[0094] Similarly, the sliding frame 5 is controlled to slide up by the telescopic member 52. When the sliding frame 5 is in the third position, only the second clamping end 512 is in conflict with the second clamping shaft 42, and the first clamping shaft 41 loses contact. At this time, when the push frame 62 rotates, the movable frame 4 will be deflected with the second clamping shaft 42 as the rotation axis to complete the adjustment of the position of the movable frame 4.

[0095] Example 3, reference Figures 1-5 , which is the third embodiment of the present invention, is different from the previous embodiment in that the rotating mechanism 2 includes a first rotating shaft 21 connected to the driving end of the first driving member 1, and a first inserting rod 211 provided at the end of the first rotating shaft 21; specifically, a plurality of first inserting rods 211 are provided and arranged in a circular array at the end of the first rotating shaft 21;

[0096] The rotating mechanism 2 further includes a second rotating shaft 22 and a second inserting rod 221 provided at the end of the second rotating shaft 22 ; a plurality of second inserting rods 221 are provided and arranged in a circular array at the end of the second rotating shaft 22 .

[0097] The first rotating shaft 21 is rotatably connected to the support frame 3 , and the second rotating shaft 22 is rotatably connected to the movable frame 4 .

[0098] Further, the rotating sleeve 23 is rotatably arranged in the movable frame 4, and the rotating sleeve 23 is in sliding connection with the second rotating shaft 22; wherein the second rotating shaft 22 and the rotating sleeve 23 can only be in sliding connection, and the second rotating shaft 22 and the rotating sleeve 23 cannot rotate relative to each other, and the cross section of the second rotating shaft 22 can be triangular, square, flower-shaped, but cannot be circular.

[0099] Further, the spring 24 is arranged on the outer wall of the second rotating shaft 22; and the pendulum part 7 is arranged on the rotating sleeve 23.

[0100] The remaining structures are the same as those in Embodiment 2.

[0101] Referring to Figure 2 When the sliding frame 5 is located at the first position, the first inserting rod 211 on the first rotating shaft 21 and the second inserting rod 221 on the second rotating shaft 22 are in spaced mutual inserting connection, and the elastic force of the spring 24 keeps the first inserting rod 211 and the second inserting rod 221 in the inserting state, in this state, when the first driving part 1 drives the first rotating shaft 21 to rotate, the second rotating shaft 22 will be driven to rotate, and then the pendulum part 7 will rotate.

[0102] When the sliding frame 5 is located at the second position and the third position, when the movable frame 4 rotates, the movable frame 4 will drive the second rotating shaft 22 to rotate, and the second inserting rod 221 will be inserted into the gap of the first inserting rod 211 laterally, in this state, when the first rotating shaft 21 rotates, the second rotating shaft 22 can still be driven to rotate, and the transmission is completed, and the rotating process of the second rotating shaft 22 can refer to Figure 10 .

[0103] It should be noted that the pivot axes of the second rotating shaft 22 when it is deflected upward and downward are the first clamping shaft 41 and the second clamping shaft 42 respectively, and since the first clamping shaft 41 and the second clamping shaft 42 are arranged on the two sides of the second rotating shaft 22, the rotating axes in the two directions are different, so that the second inserting rod 221 can keep partial inserting with the first inserting rod 211 no matter whether it rotates upward or downward, so as to ensure the transmission connection.

[0104] Among them, the rotating direction of the pendulum part 7 shown in Figure 6 and Figure 8 is opposite, so that by adjusting the position of the pendulum part 7 and changing the rotating direction of the pendulum part 7, the two pendulum parts 7 can be changed to superimpose forces or cancel forces, so as to simulate different forces.

[0105] Referring to Figure 9, by pushing the second rotating shaft 22 with the tool, the spring 24 can be compressed, the insertion between the first and second insertion rods 211 and 221 can be separated, at this time the angle of the pendulum 7 can be adjusted separately, so that the angles of the pendulum 7 on both sides are deviated, as shown in Figure 9 When the angles of the pendulum 7 are deviated, as shown in Figure 9 When the pendulum 7 works in the state shown in the figure, it will reciprocatingly twist the fan blades, testing the torsional strength thereof.

[0106] In addition, according to the combination of various use modes in Embodiment 1, the angle, position and orientation of the pendulum 7 can be adjusted, and the angle deviation between the two pendulums 7 can be matched, so as to further increase the force mode applied by the equipment, change the force action position and motion state, and improve the detection effect.

[0107] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A wind turbine blade strength detection device, characterized in that: include, A first driving member (1); a rotating mechanism (2) provided at the driving end of the first driving member (1); a support frame (3) provided on the first driving member (1); A movable frame (4) capable of rotating relative to the support frame (3); a sliding frame (5) slidably arranged on the supporting frame (3), wherein the sliding frame (5) controls the rotatable angle of the movable frame (4) by controlling its sliding position; A pushing mechanism (6) for controlling the movable frame (4) to deflect; a pendulum member (7) disposed at the output end of the rotating mechanism (2); When the sliding frame (5) is located at the first position, the rotatable angle of the movable frame (4) is zero; When the sliding frame (5) is located at the second position, the movable frame (4) can rotate at an angle of at least ninety degrees; When the sliding frame (5) is located at the third position, the movable frame (4) can rotate at an angle of at least ninety degrees; The rotatable angles of the sliding frame (5) when it is located at the second position and the third position are opposite.

2. The wind turbine blade strength detection device according to claim 1, wherein: The support frame (3) is provided with a first hole (31) and a second hole (32); The movable frame (4) is provided with a first clamping shaft (41) and a second clamping shaft (42); The first hole (31) is movably connected to the first clamping shaft (41), and the second hole (32) is movably connected to the second clamping shaft (42); The sliding frame (5) is provided with a clamping groove (51).

3. The wind turbine blade strength detection device according to claim 2, wherein: The clamping slot (51) is provided with a first clamping end (511) and a second clamping end (512); The distance between the adjacent end surfaces of the first clamping end (511) and the second clamping end (512) is equal to the distance between the axis centers of the first clamping shaft (41) and the second clamping shaft (42).

4. The wind turbine blade strength detection device according to claim 3, wherein: When the sliding frame (5) is located at the first position, the first clamping end (511) and the first clamping shaft (41) are in conflict with each other, and the second clamping end (512) and the second clamping shaft (42) are in conflict with each other; When the sliding frame (5) is located at the second position, only the first clamping end (511) and the first clamping shaft (41) are in conflict with each other; When the sliding frame (5) is located at the third position, only the second clamping end (512) and the second clamping shaft (42) are in conflict.

5. The wind turbine blade strength detection device according to claim 4, wherein: The support frame (3) is provided with a limiting block (33), and the sliding frame (5) is provided with a limiting groove (53); The limiting block (33) and the limiting groove (53) are slidably connected.

6. The wind turbine blade strength detection device according to any one of claims 1 to 5, characterized in that: The rotating mechanism (2) comprises a first rotating shaft (21) connected to the driving end of the first driving member (1), and a first inserting rod (211) provided at the end of the first rotating shaft (21); The rotating mechanism (2) further includes a second rotating shaft (22) and a second inserting rod (221) provided at the end of the second rotating shaft (22); The first rotating shaft (21) is rotatably connected to the support frame (3), and the second rotating shaft (22) is rotatably connected to the movable frame (4).

7. The wind turbine blade strength detection device according to claim 6, wherein: A plurality of first insertion rods (211) are provided and arranged in a circular array at the end of the first rotating shaft (21); A plurality of second insertion rods (221) are provided and arranged in a circular array at the end of the second rotating shaft (22).

8. The wind turbine blade strength detection device according to claim 7, wherein: A rotating sleeve (23) is rotatably provided in the movable frame (4), and the rotating sleeve (23) is slidably connected to the second rotating shaft (22); It also includes a spring (24) sleeved on the outer wall of the second rotating shaft (22); The pendulum member (7) is arranged on the rotating sleeve (23).

9. The wind turbine blade strength detection device according to claim 8, wherein: The movable frame (4) is provided with a limiting shaft (43); The pushing mechanism (6) comprises a second driving member (61) provided on the support frame (3), and a pushing frame (62) provided at a driving end of the second driving member (61); The pushing frame (62) and the limiting shaft (43) are slidably connected.

10. The wind turbine blade strength detection device according to claim 9, wherein: The sliding frame (5) is provided with a telescopic member (52), and the telescopic member (52) can control the sliding frame (5) to slide outside the supporting frame (3).

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