Vibration detection device for fan blade

Abstract

The utility model belongs to the technical field of vibration detection devices, and discloses a vibration detection device for fan blades, which comprises a base, one side of the top end of the base is fixedly connected with a clamping table, one side of the top end of the clamping table is fixedly connected with a clamping frame, the top end of the clamping frame is connected with a driving box, and one side of the clamping frame is provided with a clamping groove. The clamping groove is slidably connected with a first sliding block, and the side, away from the clamping groove, of the first sliding block is fixedly connected with a first clamping block. According to the device, a first sliding block, a first screw rod, a clamping groove and a stepping motor are used in cooperation, so that a first clamping block can be matched with a second clamping block to clamp a fan blade, vibration detection of the fan blade is facilitated, through combined use of a fixing frame, a through groove, a fixing piece and a threaded rod, a detection head of a vibration sensor can be conveniently fixed to the fan blade, and the detection efficiency is improved. The vibration sensor can be directly attached to the surface of the fan blade, so that the vibration detection of the fan blade is more accurate.

Description

Technical Field

[0001] The utility model belongs to the technical field of vibration detection devices, and more specifically, particularly relates to a vibration detection device for fan blades. Background Art

[0002] Wind turbines are electrical equipment that converts wind energy into mechanical work, which drives the rotor to rotate and eventually outputs alternating current. Wind turbines are generally composed of components such as wind wheels, generators (including devices), direction regulators (tail fins), towers, speed limit safety mechanisms, and energy storage devices. Wind turbine blades are one of the core components of wind turbines, accounting for about 15%-20% of the total cost of wind turbines. The quality of their design will directly affect the performance and benefits of wind turbines. Wind turbine blades have very high requirements for materials. They not only need to be light in weight, but also need to have high strength, corrosion resistance, and fatigue resistance. Therefore, wind turbine manufacturers now widely use composite materials to manufacture wind turbine blades, and composite materials account for as much as 90% of the entire wind turbine blades. The materials used to make blades have evolved from the original linen cloth covered with wooden boards to steel, aluminum alloys, and the current composite materials.

[0003] In order to ensure the quality of fans, the fan blades are generally required to be inspected before they leave the factory to check their quality and safety. Currently, most ways to detect fan blade vibrations are to conduct vibration tests on the blades and use vibration sensors to record the vibration data of the fan blades to judge the quality and safety of the fan blades. However, current vibration sensors are usually not fixed to the surface of the fan blades, but are instead set close to the fan blades to detect the fan blades in the air. The vibration sensors do not contact the blades for vibration detection, which not only produces large detection errors, but also when the fan is subjected to a vibration test, the vibrating blades are prone to hit the detection head of the vibration sensor, causing damage to the vibration sensor, which has a significant impact on the vibration detection of the fan blades.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a vibration detection device for fan blades is provided, in order to achieve a more practical purpose. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a vibration detection device for fan blades, which is achieved by the following specific technical means:

[0006] A vibration detection device for fan blades comprises a base, a clamping platform is fixedly connected to one side of the top of the base, a clamping frame is fixedly connected to one side of the top of the clamping platform, a driving box is connected to the top of the clamping frame, a clamping groove is provided on one side of the clamping frame, a first slider is slidably connected to the clamping groove, a first clamping block is fixedly connected to the side of the first slider away from the clamping groove, a second clamping block is fixedly connected to the top of the clamping frame on one side of the clamping groove, and the second clamping block and the first clamping block have the same size, the base is provided with a slide groove on the other side of the clamping platform, the slide groove is slidably connected to the second slider, and the top of the second slider A device block is fixedly connected, a reciprocating vibrator is fixedly connected to the top of the device block, a receiving box is provided on the top of the base located on one side of the slide slot, a plurality of wiring holes are provided on the top of the receiving box, a storage slot is also provided on the top of the base, a plurality of vibration sensors are placed in the storage slot, a fixing frame is sleeved on the outer side of the detection heads of the plurality of vibration sensors, a through slot is provided at the bottom end of the fixing frame, a fixing plate is movably connected to the through slot, a threaded rod is connected to the bottom end of the fixing plate, the other end of the threaded rod passes through the bottom end of the fixing frame and is threadedly connected to the bottom end of the fixing frame, and a knob is fixedly connected to one end of the threaded rod extending to the outer side of the fixing frame.

[0007] Furthermore, a first screw is rotatably connected to one side of the clamping groove, the first screw is threadedly connected to the first slider, and the top end of the first screw passes through the top end of the clamping frame and extends to the interior of the drive box.

[0008] Furthermore, a stepper motor is arranged in the driving box, and an output end of the stepper motor is drivingly connected to one end of the first screw extending to the driving box through a coupling.

[0009] Furthermore, a groove is provided at the top of the clamping platform at a position corresponding to the first clamping block, and the groove is larger than the size of the first clamping block.

[0010] Furthermore, a second screw is rotatably connected to one side of the slide slot, and the other end of the second screw passes through the slide slot and extends to the inside of the base. The second screw is transmission-connected to the second slider. A motor is provided in the base, and the output end of the motor is transmission-connected to one end of the base extending from the second screw via a coupling.

[0011] Furthermore, a ball bearing is fixedly connected to the bottom end of the fixing plate, and one end of the threaded rod located in the through groove is fixedly connected to the inner ring of the ball bearing.

[0012] Furthermore, a controller is provided on one side of the top end of the clamping table.

[0013] Furthermore, a sponge plate is provided at the top of the reciprocating vibrator, and sponge plates are provided on adjacent sides of the first clamping block and the second clamping block.

[0014] Furthermore, the notch of the storage slot is hinged with a storage cover via a hinge.

[0015] Furthermore, a data acquisition module is arranged inside the receiving box.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] In the utility model, through the coordinated use of the first slider, the first screw rod, the clamping groove and the stepping motor, the first clamping block can cooperate with the second clamping block to clamp the fan blades, thereby facilitating vibration detection. Through the combined use of the fixing frame, the through groove, the fixing plate and the threaded rod, the detection head of the vibration sensor can be conveniently fixed on the fan blades, so that the vibration sensor can be directly attached to the surface of the fan blades, making the vibration detection of the fan blades more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a side sectional schematic diagram of the utility model.

[0020] Figure 3 It is a front sectional schematic diagram of the utility model.

[0021] Figure 4 It is a schematic diagram of the overall structure of the vibration sensor detection head of the utility model.

[0022] Figure 5 It is a side schematic diagram of the vibration sensor of the utility model in use state.

[0023] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0024] 1. Base; 2. Clamping table; 3. Clamping frame; 4. Drive box; 5. Clamping groove; 6. First slider; 7. First clamping block; 8. Slide groove; 9. Second slider; 10. Equipment block; 11. Reciprocating vibrator; 12. Receiving box; 13. Wiring hole; 14. Storage groove; 15. Vibration sensor; 16. Fixed frame; 17. Through groove; 18. Fixed plate; 19. Threaded rod; 20. Knob; 21. First screw; 22. Stepper motor; 23. Groove; 24. Second screw; 25. Motor; 26. Ball bearing; 27. Controller; 28. Sponge board; 29. ​​Storage cover; 30. Second clamping block. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0026] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example:

[0029] As attached Figure 1 To Attachment Figure 5 As shown:

[0030] The utility model provides a vibration detection device for fan blades, comprising a base 1, a clamping platform 2 is fixedly connected to one side of the top of the base 1, a clamping frame 3 is fixedly connected to one side of the top of the clamping platform 2, a driving box 4 is connected to the top of the clamping frame 3, a clamping groove 5 is provided on one side of the clamping frame 3, a first slider 6 is slidably connected to the clamping groove 5, a first clamping block 7 is fixedly connected to the side of the first slider 6 away from the clamping groove 5, a second clamping block 30 is fixedly connected to the top of the clamping frame 3 located on one side of the clamping groove 5, and the second clamping block 30 has the same size as the first clamping block 7, a sliding groove 8 is provided on the other side of the base 1 located on the clamping platform 2, a second slider 9 is slidably connected to the sliding groove 8, and a device block is fixedly connected to the top of the second slider 9 10. A reciprocating vibrator 11 is fixedly connected to the top of the equipment block 10, a receiving box 12 is provided at the top of the base 1 on one side of the slide slot 8, a plurality of wiring holes 13 are provided at the top of the receiving box 12, a storage groove 14 is also provided at the top of the base 1, a plurality of vibration sensors 15 are placed in the storage groove 14, a fixing frame 16 is sleeved on the outer side of the detection heads of the plurality of vibration sensors 15, a through groove 17 is provided at the bottom end of the fixing frame 16, a fixing plate 18 is movably connected to the through groove 17, a threaded rod 19 is connected to the bottom end of the fixing plate 18, the other end of the threaded rod 19 passes through the bottom end of the fixing frame 16, and is threadedly connected to the bottom end of the fixing frame 16, and one end of the threaded rod 19 extending to the outer side of the fixing frame 16 is fixedly connected to a knob 20.

[0031] Among them, a first screw rod 21 is rotatably connected to one side of the clamping groove 5 , and the first screw rod 21 is threadedly connected to the first slider 6 . The top end of the first screw rod 21 passes through the top end of the clamping frame 3 and extends to the inside of the driving box 4 .

[0032] Among them, a stepper motor 22 is arranged in the driving box 4, and the output end of the stepper motor 22 is transmission-connected to one end of the driving box 4 through a coupling and extends to the first screw 21. The stepper motor 22 provides power to the first screw 21 to drive the first slider 6 to move.

[0033] A groove 23 is provided at the top of the clamping platform 2 corresponding to the position of the first clamping block 7, and the groove 23 is larger than the size of the first clamping block 7. The groove 23 can engage the first clamping block 7 to assist the first clamping block 7 in clamping the fan blade.

[0034] Among them, a second screw rod 24 is rotatably connected to one side of the slide groove 8, and the other end of the second screw rod 24 passes through the slide groove 8 and extends to the inside of the base 1. The second screw rod 24 is transmission connected to the second slider 9. A motor 25 is arranged in the base 1, and the output end of the motor 25 is transmission connected to one end of the base 1 extending from the second screw rod 24 through a coupling.

[0035] The bottom end of the fixing plate 18 is fixedly connected to a ball bearing 26 , and one end of the threaded rod 19 located in the through groove 17 is fixedly connected to the inner ring of the ball bearing 26 .

[0036] A controller 27 is disposed on one side of the top of the clamping table 2, and the controller 27 is convenient for controlling the entire device.

[0037] Among them, a sponge board 28 is arranged at the top of the reciprocating vibrator 11, and sponge boards 28 are arranged on adjacent sides of the first clamping block 7 and the second clamping block 30. By arranging the sponge board 28, the damage to the fan blades during the test can be reduced.

[0038] The slot opening of the storage slot 14 is hinged with a storage cover 29 via a hinge, and the storage cover 29 can protect the vibration sensor 15 in the storage slot 14 .

[0039] The receiving box 12 is internally provided with a data acquisition module to facilitate the transmission of the test data to the computer.

[0040] Working principle of this embodiment: In the utility model, the fan blade to be detected is placed in the groove 23 of the clamping table 2, so that the blade is located at the top position of the first clamping block 7, the controller 27 is operated, and the stepper motor 22 starts to drive, driving the first screw 21 to rotate. The rotation of the first screw 21 causes the first slider 6 to drive the first clamping block 7 to move upward in the clamping groove 5, and the first clamping block 7 continuously approaches the second clamping block 30. The first clamping block 7 and the second clamping block 30 clamp the blade tightly, and then the storage cover 29 is opened, and the vibration sensor 15 in the storage groove 14 is taken out, and the interface side of the vibration sensor 15 is connected to the wiring hole 13 on the receiving box 12, and one side of the detection head of the vibration sensor 15 is connected to the blade, and the detection head of the vibration sensor 15 is aligned with the side of the blade, and the fixing frame 16 is pressed against the blade. One side, then twist the knob 20, the knob 20 drives the threaded rod 19 to rotate, the threaded rod 19 continuously moves upward in the through slot 17, so that the fixing plate 18 is against the bottom end of the blade, and at the same time, the detection head of the vibration sensor 15 is located at the top end of the blade, and a clamping force is generated on the blade between the fixing plate 18 and the vibration sensor 15, so that the vibration sensor 15 is fixed on the blade, and then, the controller 27 is operated to control the motor 25 to drive the second screw rod 24 to rotate and drive the second slider 9 to move in the slide slot 8, driving the reciprocating vibrator 11 to perform a vibration experiment on the blade clamped by the first clamping block 7 and the second clamping block 30, and the vibration sensor 15 fixedly attached to the surface of the blade begins to continuously transmit the vibration data to the external computer through the data acquisition module of the receiving box 12, which greatly improves the accuracy of the vibration detection of the fan blade.

[0041] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

Claims

1. A vibration detection device for a fan blade, comprising a base (1), characterized in that: The top side of the base (1) is fixedly connected to a clamping platform (2), the top side of the clamping platform (2) is fixedly connected to a clamping frame (3), the top of the clamping frame (3) is connected to a driving box (4), a clamping groove (5) is provided on one side of the clamping frame (3), a first slider (6) is slidably connected to the clamping groove (5), a first clamping block (7) is fixedly connected to the side of the first slider (6) away from the clamping groove (5), a second clamping block (30) is fixedly connected to the top of the clamping frame (3) located on one side of the clamping groove (5), and the second clamping block (30) and the first clamping block (7) have the same size, and a sliding groove (8) is provided on the other side of the base (1) located on the clamping platform (2), a second slider (9) is slidably connected to the sliding groove (8), a device block (10) is fixedly connected to the top of the second slider (9), and the top of the device block (10) The end of the base (1) is fixedly connected with a reciprocating vibrator (11); the top of the base (1) is located on one side of the slide groove (8) and is provided with a receiving box (12); the top of the receiving box (12) is provided with a plurality of wiring holes (13); the top of the base (1) is also provided with a receiving groove (14); a plurality of vibration sensors (15) are placed in the receiving groove (14); the outer sides of the detection heads of the plurality of vibration sensors (15) are sleeved with a fixing frame (16); the bottom end of the fixing frame (16) is provided with a through groove (17); the through groove (17) is movably connected with a fixing plate (18); the bottom end of the fixing plate (18) is connected with a threaded rod (19); the other end of the threaded rod (19) passes through the bottom end of the fixing frame (16) and is threadedly connected to the bottom end of the fixing frame (16); one end of the threaded rod (19) extending to the outside of the fixing frame (16) is fixedly connected with a knob (20).

2. A vibration detection device for a fan blade as claimed in claim 1, characterized in that: A first screw rod (21) is rotatably connected to one side of the clamping groove (5), the first screw rod (21) is threadedly connected to the first sliding block (6), and the top end of the first screw rod (21) passes through the top end of the clamping frame (3) and extends to the interior of the driving box (4).

3. A vibration detection device for a fan blade as claimed in claim 2, characterized in that: A stepper motor (22) is arranged in the driving box (4), and an output end of the stepper motor (22) is drivingly connected to one end of the first screw rod (21) extending to the driving box (4) through a coupling.

4. A vibration detection device for a fan blade as claimed in claim 1, characterized in that: A groove (23) is provided at the top end of the clamping platform (2) at a position corresponding to the first clamping block (7), and the groove (23) is larger than the size of the first clamping block (7).

5. A vibration detection device for a fan blade as claimed in claim 1, characterized in that: A second screw rod (24) is rotatably connected to one side of the slide groove (8), and the other end of the second screw rod (24) passes through the slide groove (8) and extends to the inside of the base (1). The second screw rod (24) is transmission-connected to the second sliding block (9). A motor (25) is arranged in the base (1), and the output end of the motor (25) is transmission-connected to one end of the second screw rod (24) extending to the base (1) through a coupling.

6. A vibration detection device for a fan blade according to claim 1, characterized in that: The bottom end of the fixing plate (18) is fixedly connected to a ball bearing (26), and one end of the threaded rod (19) located in the through groove (17) is fixedly connected to the inner ring of the ball bearing (26).

7. A vibration detection device for a fan blade as claimed in claim 1, characterized in that: A controller (27) is provided on one side of the top end of the clamping platform (2).

8. A vibration detection device for a fan blade as claimed in claim 1, characterized in that: A sponge plate (28) is provided at the top end of the reciprocating vibrator (11), and sponge plates (28) are provided on adjacent sides of the first clamping block (7) and the second clamping block (30).

9. A vibration detection device for a fan blade as claimed in claim 1, characterized in that The notch of the storage slot (14) is hingedly connected to a storage cover (29) via a hinge.

10. A vibration detection device for a fan blade according to claim 1, characterized in that: A data acquisition module is arranged inside the receiving box (12).

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