Self-crawling mechanism for installing sawteeth on tail edge of wind power blade

Abstract

The utility model provides a self-crawling mechanism for installing sawteeth on the tail edge of a wind power blade. The self-crawling mechanism comprises crawler belt assemblies arranged on the left side and the right side of a main machine frame and an adjusting assembly used for adjusting the distance between the two crawler belt assemblies. The adjusting assembly comprises a constant-force pneumatic supporting rod I, a strip-shaped connecting rod and an electric push rod; the crawler belt assembly is rotationally connected with a side frame on the main machine frame through a strip-shaped connecting rod and rotationally connected with the output end of an electric push rod through a constant-force pneumatic supporting rod I. A mounting base of the electric push rod is rotationally connected to the side frame. Compared with an existing climbing mode of a vacuum suction cup, the crawling device adopts a moving mode that the crawler belt assemblies climb on the two sides of the wind power blades in a clamping and abutting mode, the crawling device can adapt to the wind power blades of different thicknesses, the problem that the crawling device is disengaged from the wind power blades cannot occur, the crawling device can be prevented from inclining through the arrangement of the rolling wheel anti-inclining frames, and the service life of the crawling device is prolonged. And therefore, the climbing device is prevented from falling off, and the construction safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine blade maintenance, in particular to a self-climbing mechanism for installing serrations on the trailing edge of a wind turbine blade. Background Art

[0002] With the development of the wind power industry, my country's installed capacity of wind turbines is increasing. As the device that captures wind energy, wind turbine blades are the core component of wind turbines. To reduce operating noise and extend blade life, installing trailing-edge serrations on the trailing edge of wind turbine blades is one of the most widely used solutions. Essentially, this approach reduces the aerodynamic noise generated by the interaction between turbulence on the blade surface and the trailing edge airfoil. Therefore, installing trailing-edge serrations effectively reduces blade vibration, prevents fatigue damage, and reduces maintenance costs.

[0003] As a climbing device that carries the trailing edge serration installation equipment, its main function is to crawl along the direction of the blade and move the trailing edge serration installation equipment to the area on the blade where the trailing edge serration needs to be attached;

[0004] However, most existing climbing devices adopt a crawling method that uses several vacuum suction cups to adsorb the blade surface. For example, the wall-climbing robot for wind turbine blade inspection proposed in Publication (Announcement) No. CN116923581A can realize the function of climbing and moving, but the suction cups are prone to detachment, which in turn causes the climbing device to fall, thereby damaging the equipment and even causing safety accidents due to falling objects from high altitude. Utility Model Content

[0005] In view of this, the problem to be solved by the present invention is to provide a self-climbing mechanism for installing the serrations on the trailing edge of a wind turbine blade.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A self-climbing mechanism for installing serrations on the trailing edge of a wind turbine blade, comprising crawler assemblies constructed on the left and right sides of a main frame and an adjustment component for adjusting the distance between the two sets of crawler assemblies;

[0008] The adjustment component includes a constant force gas strut I, a bar connecting rod and an electric push rod; the track assembly is rotatably connected to the side frame on the main frame through the bar connecting rod, and is rotatably connected to the output end of the electric push rod through the constant force gas strut I, and the mounting base of the electric push rod is rotatably connected to the side frame.

[0009] The main frame comprises a front main frame and a rear main frame, and two ends of the two groups of side frames are respectively connected to the front main frame and the rear main frame.

[0010] The side frames are detachably connected to the quick-release flanges on the front main frame and the rear main frame through rotating shafts at both ends.

[0011] The crawling device also includes a roller anti-roll frame, the rollers of which are used to abut against the wind turbine blades; the roller anti-roll frame is rotatably mounted on the front main frame and is rotatably connected to the output end of the electric push rod through a constant force gas strut II.

[0012] One end of the constant force gas strut II is rotatably connected to the roller anti-roll frame, and the other end is rotatably connected to the output end of the electric push rod through the chassis connecting rod group.

[0013] One of the chassis link rods 1 of the chassis link rod group is slidably arranged on an inclined chute, and the inclined direction of the inclined chute is inclined below the plane where the main frame is located.

[0014] The advantages and positive effects of the utility model are:

[0015] Compared with the existing climbing method of vacuum suction cups, this crawling device adopts a crawler assembly to clamp and crawl on both sides of the wind turbine blades. It can adapt to wind turbine blades of different thicknesses and will not have the problem of separation from the wind turbine blades. The setting of the roller anti-roll frame can also prevent the crawling device from tilting, thereby avoiding the climbing device from falling, so that construction safety is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0017] In the attached figure:

[0018] Figure 1 This is a first-perspective structural diagram of a self-climbing mechanism for installing serrations on the trailing edge of a wind turbine blade according to the utility model, crawling on the wind turbine blade;

[0019] Figure 2 This is a second perspective structural diagram of a self-climbing mechanism for installing serrations on the trailing edge of a wind turbine blade according to the utility model, crawling on the wind turbine blade;

[0020] Figure 3 This is a side view of a self-climbing mechanism for installing serrations on the trailing edge of a wind turbine blade according to the present invention;

[0021] In the figure: wheel anti-roll frame 11, track assembly 12, track drive wheel 1210, tensioner 1211, track connecting rod group 1212, shock absorber 1213, track 1214, constant force gas strut I127, quick release flange 128, strip connecting rod 129, electric push rod 13, mounting seat 131, chassis connecting rod group 14, hinge 141, constant force gas strut II142, rolling chassis connecting rod I143, chassis connecting rod II144, main frame 16, front main frame 161, rear main frame 162, side frame 17, inclined slide 18, vertical plate frame 181. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] like Figure 1 As shown, the present invention provides a self-climbing mechanism for installing serrated trailing edges of wind turbine blades, comprising a crawler assembly 12 constructed on the left and right sides of a main frame 16 and an adjustment assembly for adjusting the spacing between the two sets of crawler assemblies 12. By adjusting the spacing, the wind turbine blade is clamped between the two sets of crawler assemblies 12. The crawler 1214 of the crawler assembly 12 rotates, and the friction generated by the friction with the surface of the wind turbine blade causes the crawler to move forward.

[0026] The main frame 16 includes a front main frame 161 and a rear main frame 162. The two ends of the two sets of side frames 17 are respectively connected to the front main frame 161 and the rear main frame 162. The trailing edge serration mounting device can be fixed to the front main frame 161 and the rear main frame 162 by bolts.

[0027] The adjustment assembly includes a constant-force gas strut 1127, a bar connecting rod 129, and an electric push rod 13; the track assembly 12 is rotatably connected to the side frame 17 on the main frame 16 via the bar connecting rod 129. In this embodiment, two sets of bar connecting rods 129 are provided on each side of the track assembly 12 and are rotatably connected to the output end of the electric push rod 13 via the constant-force gas strut 1127. The mounting base 131 of the electric push rod 13 is rotatably connected to the side frame 17.

[0028] The expansion and contraction of the electric push rod 13 drives the constant force gas strut 1127 to swing, thereby changing the state of the strip connecting rod 129. When the crawler 1214 moves inward and contacts the surface of the wind turbine blade, the constant force gas strut 1127 is compressed, which can achieve a nearly constant pressure of the crawler on the surface of the wind turbine blade, thereby achieving the clamping of the wind turbine blade;

[0029] like Figure 3 As shown, the crawler track assembly further includes a crawler track driving wheel 1210, a tensioning wheel 1211, a crawler track connecting rod group 1212, a shock absorber 1213, and a crawler track 1214; the motor drives the crawler track driving wheel 1210 to provide power, and the tensioning wheel 1211 and the shock absorber 1213 are installed in the crawler track connecting rod group 1212. This is a prior art and will not be described in detail here;

[0030] Compared with the existing climbing method of vacuum suction cups, this crawling device adopts a moving method of clamping and crawling on both sides of the wind turbine blades. It can adapt to wind turbine blades of different thicknesses and will not cause the problem of separation from the wind turbine blades, thereby ensuring construction safety.

[0031] like Figures 1 to 2 As shown, specifically, the side frame 17 is detachably connected to the quick-release flanges 128 on the front main frame 161 and the rear main frame 162 through the rotating shafts at both ends; the quick-release flange 128 includes an adjusting wrench, and the tightness of the quick-release flange 128 can be controlled by rotating the adjusting wrench; when the quick-release flanges 128 on both sides of the track assembly 12 are loosened, the track assembly 12 and the electric push rod 13 can rotate as a whole with the side frame 17 around the rotating axis relative to the main frame 16, thereby realizing the function of adjusting the angle between the track assembly 12 and the main frame 16.

[0032] Furthermore, the crawling device also includes a roller anti-roll frame 11, the roller of the roller anti-roll frame 11 is used to abut the wind turbine blades, the roller anti-roll frame 11 is rotatably installed on the front main frame 161, and is rotatably connected to the output end of the electric push rod 13 through the constant force gas strut II142. The opening angle of the roller anti-roll frame 11 can be controlled by the extension and contraction of the electric push rod 13, thereby preventing the crawling device from tilting relative to the wind turbine blades during movement.

[0033] Specifically, one end of the constant force gas strut II142 is rotatably connected to the roller anti-roll frame 11, and the other end is rotatably connected to the output end of the electric push rod 13 through the chassis link group 14. The chassis link group 14 includes two groups of chassis links, one of which, the chassis link I143, is slidably provided on the inclined chute 18. One end of the chassis link I143 is rotatably connected to the constant force gas strut II142, and the other end of the chassis link I143 is rotatably connected to the chassis link II144. The chassis link II144 is connected to the output end of the electric push rod 13 through a hinge 141. The inclined chute 18 is provided on the vertical plate frame 181, and the inclination direction of the inclined chute 18 is inclined below the plane where the main frame 16 is located.

[0034] When the electric push rod 13 is extended, the state of the chassis link group 14 changes, the chassis link I143 rotates relative to the chassis link II144 and moves downward along the inclined slide 18, thereby pushing the roller anti-roll frame 11 to abut against the wind turbine blade. When the roller anti-roll frame 11 contacts the surface of the wind turbine blade, the constant force gas strut 142 is compressed, so that the clamping force of the roller anti-roll frame 11 on the surface of the wind turbine blade can be made approximately constant.

[0035] The working principle and working process of this utility model are as follows:

[0036] When crawling is required, the electric push rod 13 is extended to drive the constant force gas strut 1127 to swing, thereby changing the state of the strip connecting rod 129. When the crawler 1214 moves inward and contacts the surface of the wind turbine blade, the constant force gas strut 1127 is compressed, so that the crawler assembly 12 is pressed against the wind turbine blade.

[0037] When the electric push rod 13 is extended, it also drives the state of the chassis connecting rod group 14 to change, that is, the chassis connecting rod I143 rotates relative to the chassis connecting rod II144 and moves downward along the inclined slide 18 to push the roller anti-roll frame 11 to abut the wind turbine blade. When the roller anti-roll frame 11 contacts the surface of the wind turbine blade, the constant force gas strut 142 is compressed to achieve the tight contact of the roller against the wind turbine blade, and then the track assembly 12 is started, and the track 1214 of the track assembly 12 rotates, and the friction force generated with the surface of the wind turbine blade makes the crawling device move forward.

[0038] The above embodiments of the present invention are described in detail. However, the above contents are only preferred embodiments of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of this patent.

Claims

1. A self-climbing mechanism for installing serrations on the trailing edge of a wind turbine blade, characterized in that: It comprises crawler assemblies (12) constructed on the left and right sides of a main frame (16) and an adjustment component for adjusting the distance between the two sets of crawler assemblies (12); The adjusting component comprises a constant force gas strut I (127), a strip connecting rod (129) and an electric push rod (13); the crawler track assembly (12) is rotatably connected to a side frame (17) on a main frame (16) through the strip connecting rod (129), and is rotatably connected to an output end of the electric push rod (13) through the constant force gas strut I (127); and a mounting base (131) of the electric push rod (13) is rotatably connected to the side frame (17).

2. The self-climbing mechanism for installing the serrations on the trailing edge of a wind turbine blade according to claim 1, characterized in that: The main frame (16) comprises a front main frame (161) and a rear main frame (162), and two ends of the two sets of side frames (17) are respectively connected to the front main frame (161) and the rear main frame (162).

3. The self-climbing mechanism for installing the serrations on the trailing edge of a wind turbine blade according to claim 2, characterized in that: The side frame (17) is detachably connected to the quick-release flanges (128) on the front main frame (161) and the rear main frame (162) via rotating shafts at both ends.

4. The self-climbing mechanism for installing the serrations on the trailing edge of a wind turbine blade according to claim 1, characterized in that: The crawling device also includes a roller anti-roll frame (11), the roller of which is used to abut against the wind turbine blades; the roller anti-roll frame (11) is rotatably mounted on the front main frame (161) and is rotatably connected to the output end of the electric push rod (13) through a constant force gas strut II (142).

5. The self-climbing mechanism for installing the serrations on the trailing edge of a wind turbine blade according to claim 4, characterized in that: One end of the constant force gas strut II (142) is rotationally connected to the roller anti-roll frame (11), and the other end is rotationally connected to the output end of the electric push rod (13) through the chassis connecting rod group (14).

6. The self-climbing mechanism for installing the serrations on the trailing edge of a wind turbine blade according to claim 5, characterized in that: One of the chassis connecting rods I (143) of the chassis connecting rod group (14) is slidably arranged on an inclined chute (18), and the inclined direction of the inclined chute (18) is inclined below the plane where the main frame (16) is located.

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