Fan blade damage detection device

Abstract

Compared with the prior art, the fan blade damage detection device has the advantages that the length of the main support can be adjusted according to the size of a blade, the probability of adjusting the posture of the main support is reduced, the use convenience is improved, the fan blade damage detection device comprises the main support and a walking support arranged on the main support, and the main support comprises a first pull rod and a second pull rod; a guide channel is arranged in the axial direction, and a first end plate connected with a suction cup is arranged at one end; one end of the second pull rod is arranged in the guide channel in an inserted and guided mode, the other end of the second pull rod is provided with a first threaded hole used for being connected with a suction cup, and the first pull rod and the second pull rod are in circumferential non-rotating fit.

Description

Technical Field

[0001] The utility model relates to the technical field of fan blade detection, in particular to a fan blade damage detection device. Background Art

[0002] As a clean energy source, wind power generation has been vigorously developed in recent years. As an important component of wind power generation, wind turbine blades are subject to centrifugal force and air flow forces during operation, and the working load is large. To ensure the safe and stable operation of wind turbine blades, the quality of wind turbine blades must be guaranteed.

[0003] During the manufacturing and transportation of wind turbine blades, it is inevitable that the wind turbine blades will suffer structural damage. Therefore, before installing the wind turbine blades, non-destructive testing and acceptance of the wind turbine blades are required.

[0004] Based on this, the Chinese utility model patent with the application number 2022209807567 discloses a wind power generation blade defect detection system, which includes a main bracket and a walking bracket slidably arranged on the main bracket. A timing belt is arranged on the walking bracket, and a phased array probe is arranged on the timing belt. Suction cups are arranged at both ends of the main bracket. During operation, the suction cups are adsorbed on the blade surface, the walking bracket can walk on the main bracket, and the timing belt can drive the phased array probe to reciprocate, so that the blade can be detected by the phased array probe to achieve the effect of detecting blade damage. However, in the actual use process, there are still the following problems: when detecting the blade, the main bracket is arranged in the width direction or length direction of the blade. Since the width dimension in the width direction of the blade changes from the tip to the middle area, and since the main bracket is a rod with a fixed length, when the length of the main bracket is greater than the width of the part to be detected, the main bracket needs to be arranged at a certain angle with the width direction of the blade. When sequentially detecting the blade surface, the attitude of the main bracket needs to be adjusted, which is not convenient to use, and it is easy to have the phenomenon of repeated detection and missed detection of some parts during the attitude adjustment process. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the above problems and provide a fan blade damage detection device.

[0006] To achieve the above purpose, the technical solution of the utility model is: a fan blade damage detection device, including a main bracket and a walking bracket arranged on the main bracket. The main bracket includes:

[0007] A first pull rod, which is provided with a guiding channel along the axial direction, and one end is provided with a first end plate for connecting with a suction cup;

[0008] A second pull rod, one end of which is inserted and guided in the guiding channel, and the other end is provided with a first threaded hole for connecting with a suction cup. The first pull rod and the second pull rod are non-rotatably matched in the circumferential direction.

[0009] Further, it further includes a sleeve rod slidably sleeved around the outer periphery of the first pull rod. The first pull rod includes four convex ribs evenly spaced around the axis. Four guiding notches corresponding to the four convex ribs one by one are evenly spaced on the side wall of the sleeve rod. The other end of the second pull rod is detachably and fixedly connected to the sleeve rod.

[0010] Further, a first limiting surface is arranged on the end of the guiding channel away from the first end plate facing the first end plate, and a second limiting surface is arranged on the end of the second pull rod facing the first limiting surface.

[0011] Further, a guiding blind hole is arranged at one end of the first pull rod close to the first end plate. The guiding blind hole is coaxially arranged with the guiding channel. A sliding member is guidingly arranged in the guiding blind hole. The sliding member is connected to the second pull rod. The first limiting surface is the bottom surface of the guiding blind hole, and the second limiting surface is the end surface of the sliding member.

[0012] Further, the second pull rod is detachably and fixedly connected to the sliding member.

[0013] Further, a second end plate is arranged at one end of the sleeve rod away from the first end plate, and the second pull rod is connected to the second end plate.

[0014] Further, the cross section of the sleeve rod is rectangular, and the height of the convex rib is equal to the wall thickness of the sleeve rod.

[0015] Further, it further includes two clamping plates connected to the walking bracket. The clamping plates are respectively arranged on both sides of the main bracket, and limiting rollers and friction wheels spaced from the limiting rollers are arranged on the clamping plates.

[0016] A fan blade damage detection device disclosed by the present utility model has the following beneficial effects compared with the prior art: It can adjust the length of the main bracket according to the size of the blade, reduce the probability of adjusting the posture of the main bracket, and improve the convenience of use. It includes a main bracket and a walking bracket arranged on the main bracket. The main bracket includes: a first pull rod, a guiding channel is arranged along the axial direction, and a first end plate for connecting with a suction cup is arranged at one end; a second pull rod, one end is inserted and guidingly arranged in the guiding channel, and a first threaded hole for connecting with a suction cup is arranged at the other end. The first pull rod and the second pull rod are non-rotatably matched in the circumferential direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic connection structure diagram of the main bracket and the walking bracket in a fan blade damage detection device of the present utility model Figure 1 .

[0018] Figure 2 is a schematic connection structure diagram of the main bracket and the walking bracket in a fan blade damage detection device of the present utility model Figure 2。

[0019] Figure 3 This is a schematic structural diagram of the walking bracket and the clamping plate in a fan blade damage detection device of the present utility model.

[0020] Figure 4 This is a schematic structural diagram of the main bracket in a fan blade damage detection device of the present utility model.

[0021] Figure 5 This is a schematic cross-sectional structural diagram of the main bracket in a fan blade damage detection device of the present utility model.

[0022] Figure 6 This is a schematic structural diagram of the cooperation between the first pull rod and the second pull rod in a fan blade damage detection device of the present utility model.

[0023] Figure 7 This is a schematic structural diagram of the sleeve rod in a fan blade damage detection device of the present utility model Figure 1 。

[0024] Figure 8 This is a schematic structural diagram of the sleeve rod in a fan blade damage detection device of the present utility model Figure 2 。

[0025] Figure 9 This is a schematic cross-sectional structural diagram of the cooperation between the sleeve rod and the first pull rod in a fan blade damage detection device of the present utility model.

[0026] In the figure: 1. Main bracket; 10. First end plate; 11. Sleeve rod; 110. First threaded hole; 111. Guide slot; 112. Second threaded hole; 12. First pull rod; 120. Rib; 121. Guide channel; 122. First limiting surface; 123. Guide blind hole; 13. Second end plate; 15. Second pull rod; 150. Connecting end plate; 151. Sliding part; 1510. Second limiting surface; 2. Walking bracket; 207. Clamping plate; 208. Walking motor; 2080. Friction wheel; 210. Limiting roller. Detailed implementation manners

[0027] Now, the present utility model will be further described in detail with reference to the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0028] Please refer to Figures 1-9 , the technical solution of the present utility model is: a fan blade damage detection device, including a main bracket 1 and a walking bracket 2 arranged on the main bracket. The main bracket includes:

[0029] The first pull rod 12 is provided with a guiding channel 121 in the axial direction, and one end is provided with a first end plate 10 for connecting with the suction cup.

[0030] The second pull rod 15 has one end inserted and guided in the guiding channel 121, and the other end is provided with a first threaded hole 110 for connecting with the suction cup. The first pull rod 12 and the second pull rod 15 are in non-rotating circumferential fit.

[0031] Specifically, it should be noted that both ends of the main support 1 of the present application can be connected to the suction cup by setting the first end plate 10 and the first threaded hole 110, and the main support is fixed by the suction cup. Each end of the main support is the same as the prior art in the background technology, and two suction cups are connected to each end. The two suction cups can be connected by the same rod structure as in the background technology. Then, a plate body with a threaded hole is welded at the end of the rod structure, and then the plate body, the first end plate 10 and the first threaded hole 110 are fixedly connected by a screw rod to achieve the connection purpose. In the present application, the main support is set to include a first pull rod 12 and a second pull rod 15 in plug-in fit, and the two are in non-rotating circumferential fit. The walking support 2 is arranged on the main support. By this setting method, the length of the main support can be adjusted according to the size of the blade, the probability of adjusting the posture of the main support is reduced, and the convenience of use is improved.

[0032] Furthermore, as a specific implementation manner, it further includes a sleeve rod 11 slidably guided around the first pull rod 12. The first pull rod 12 includes four convex ribs 120 evenly spaced around the axis. Four guiding notches 111 corresponding to the four convex ribs 120 are evenly spaced on the side wall of the sleeve rod 11. The other end of the second pull rod 15 is detachably and fixedly connected to the sleeve rod 11.

[0033] Specifically, the cross-section of the sleeve rod 11 is a square cylinder. In the middle area of the four side walls of the sleeve rod, guiding notches 111 are formed. The first pull rod includes a square rod guidingly fitted with the inner cylinder of the sleeve rod and four convex ribs 120 provided on the four surfaces of the rod. A cylindrical guiding channel 121 is coaxially arranged in the central area of the first pull rod. The second pull rod 15 is a columnar rigid rod, and a connecting end plate 150 is provided at the end of the second pull rod. A second end plate 13 is provided at the end of the sleeve rod. The connecting end plate and the second end plate 13 are detachably and fixedly connected. After the first pull rod and the sleeve rod are inserted and guidingly fitted, the first pull rod and the sleeve rod are in non-rotating circumferential fit. The sleeve rod is connected to the second pull rod, so that the second pull rod and the sleeve rod are also in non-rotating circumferential fit. Four first threaded holes 110 are provided and are arranged on the outer peripheral surface of the sleeve rod.

[0034] Specifically, the first end plate 10 is of an L-shaped structure, and threaded holes for suction cup connection are provided on the first end plate. Four second threaded holes 112 are provided at the end of the sleeve rod. Four through holes corresponding to the four second threaded holes one by one are provided on the second end plate. Threaded holes are also provided at the four corner positions of the connecting end plate 150. Four second through holes corresponding to the four threaded holes on the connecting end plate are provided on the second end plate 13. Thus, the second end plate is connected to the sleeve rod by a screw passing through the through hole on the second end plate 13 and the second threaded hole 112 and the threaded hole on the connecting end plate 150, and the connecting end plate 150 is connected to the second end plate 13. As a specific implementation manner, the connecting end plate 150 is integrally provided with the second pull rod.

[0035] Further, as a specific implementation manner, refer to Figure 5 , a first limiting surface 122 is provided on one end of the guiding channel 121 away from the first end plate 10 facing the first end plate, and a second limiting surface 1510 is provided on the end of the second pull rod 15 facing the first limiting surface 122.

[0036] Specifically, by providing the first limiting surface and the second limiting surface with limiting cooperation, the first pull rod and the second pull rod can be axially limited and cooperated to prevent the first pull rod and the second pull rod from separating from each other.

[0037] Further, as a specific implementation manner, a guiding blind hole 123 is provided at one end of the first pull rod 12 close to the first end plate. The guiding blind hole 123 is coaxially arranged with the guiding channel 121. A sliding member 151 is guidedly arranged in the guiding blind hole. The sliding member 151 is connected to the second pull rod 15. The first limiting surface is the bottom surface of the guiding blind hole, and the second limiting surface is the end surface of the sliding member.

[0038] Specifically, the first pull rod, the second pull rod and the sleeve rod are all rigid rods. The length of the second pull rod is equal to the length of the sleeve rod. When the sliding member 151 abuts against the bottom of the guiding blind hole 123, the end of the sleeve rod is sleeved on the first pull rod.

[0039] Further, the second pull rod 15 is detachably and fixedly connected to the sliding member 151. Specifically, the movable member can be threadedly connected to the second pull rod. By this setting method, the first end plate is detachably and fixedly connected to the end of the first pull rod. This method is convenient for the installation and disassembly of the first pull rod and the second pull rod and is convenient for later maintenance.

[0040] Further, as a specific implementation manner, a second end plate 13 is provided at one end of the sleeve rod 11 away from the first end plate. The second pull rod 15 is connected to the second end plate 13.

[0041] Further, as a specific implementation manner, refer to Figure 9, the cross-section of the sleeve rod is rectangular, and the height of the convex rib is equal to the wall thickness of the sleeve rod. By setting the height of the convex rib equal to the wall thickness of the sleeve rod, the surface of the convex rib can be flush with the outer surface of the sleeve rod, so that the size of the outer surface remains unchanged when the main frame body contracts and extends, facilitating stable cooperation with the clamping plate 207, the limiting roller 210, and the friction wheel 2080.

[0042] Further, as a specific implementation manner, consistent with the background art, the present application further includes two clamping plates 207 connected to the walking bracket 2. The clamping plates are disposed on both sides of the main bracket 1. The clamping plates are provided with limiting rollers 210 and friction wheels 2080 spaced apart from the limiting rollers. Among them, the two clamping plates 207 are disposed on both sides of the main bracket 1, and are in limiting cooperation with the surfaces of the two convex ribs on both sides of the first pull rod and the two side surfaces of the sleeve rod. The limiting rollers 210 include three spaced apart ones, which are in contact and cooperation with the lower convex rib and the lower surface of the sleeve rod. Different from the background art, the present application replaces the walking gear in the background art with a friction wheel 2080. The friction wheel is drivingly connected to the walking motor 208. The outer peripheral surface of the friction wheel 2080 is in contact and cooperation with the surface of the convex rib above the first pull rod and the upper surface of the sleeve rod, and is in frictional cooperation with each other. When the walking motor drives the friction wheel 2080 to rotate, the walking bracket is disposed on the two clamping plates 207, and can drive the two clamping plates 207 to move on the main bracket through the frictional force of the friction wheel, thereby driving the walking bracket to move, and then driving the phased array probe disposed on the walking bracket to move for detection.

[0043] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A wind turbine blade damage detection device, comprising a main support (1) and a walking support (2) arranged on the main support, characterized in that the main support include: A first pull rod (12) is provided with a guide channel (121) along the axial direction and a first end plate (10) for connecting to a suction cup is provided at one end; The second pull rod (15) has one end inserted and guided in the guide channel (121), and the other end is provided with a first threaded hole (110) for connecting to the suction cup, and the first pull rod (12) and the second pull rod (15) are circumferentially non-rotatably matched.

2. A fan blade damage detection device according to claim 1, characterized in that: It also includes a sleeve rod (11) that is guide-slidably sleeved on the periphery of the first pull rod (12), the first pull rod (12) including four convex ribs (120) evenly spaced around an axis, four guide notches (111) that correspond to the four convex ribs (120) evenly spaced on the side wall of the sleeve rod, and the other end of the second pull rod (15) is detachably fixedly connected to the sleeve rod (11).

3. A fan blade damage detection device according to claim 2, characterized in that: An end of the guide channel (121) away from the first end plate (10) is provided with a first limiting surface (122) facing the first end plate, and an end of the second pull rod (15) is provided with a second limiting surface (1510) facing the first limiting surface (122).

4. A fan blade damage detection device according to claim 3, characterized in that: A guide blind hole (123) is provided at one end of the first pull rod (12) close to the first end plate. The guide blind hole (123) is coaxially arranged with the guide channel (121). A sliding member (151) is provided in the guide blind hole. The sliding member (151) is connected to the second pull rod (15). The first limiting surface is the bottom surface of the guide blind hole, and the second limiting surface is the end surface of the sliding member.

5. A fan blade damage detection device according to claim 4, characterized in that: The second pull rod (15) is detachably fixedly connected to the sliding member (151).

6. A wind turbine blade damage detection device according to claim 5, characterized in that: A second end plate (13) is provided at one end of the sleeve rod (11) away from the first end plate, and the second pull rod (15) is connected to the second end plate (13).

7. A wind turbine blade damage detection device according to claim 6, characterized in that: The cross section of the sleeve rod is rectangular, and the height of the convex rib is equal to the wall thickness of the sleeve rod.

8. A fan blade damage detection device according to claim 7, characterized in that: It also comprises two clamping plates (207) connected to the walking support (2), the clamping plates being arranged on both sides of the main support (1), and the clamping plates being provided with a limiting roller (210) and a friction wheel (2080) spaced apart from the limiting roller.

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