Blade protection plate pulling-out device

Abstract

The utility model relates to a blade guard plate pulling-out device which is installed on a hanging beam (14), located on the rear edge side of a blade (12), of a blade hoisting mechanism (13). The fixed bracket (4) is fixedly arranged at the end part of a hanging beam (14); the movable bracket (6) is arranged on the fixed bracket (4) in a sliding manner through a telescopic mechanism (5); the redirection pulley (7) is arranged at the lower end of the movable bracket (6); the steel wire rope (2) bypasses the redirection pulley (7) and is connected with a blade protection plate (10); and the steel wire rope (2) is dragged by a traction mechanism to pull out the blade protection plate (10) from the rear edge of the blade (12). The blade guard plate can be safely pulled out from the rear edge of the blade, and the blade guard plate pulling device is simple in structure, convenient to operate, labor-saving and high in efficiency.

Description

Technical Field

[0001] The utility model relates to a blade guard plate pulling device, belonging to the technical field of wind power hoisting auxiliary equipment. Background Art

[0002] Wind turbine blades are usually made of composite materials such as glass fiber and carbon fiber. Although they have high strength and light weight, in order to achieve "grid parity" for offshore wind power, major wind turbine manufacturers are actively deploying large-scale wind power and developing large-capacity offshore wind turbines. As a result, super-long and super-flexible blades have appeared, and the weight of the blades has also increased. During the transportation and installation of the blades, the blades need to be hoisted. However, due to the wind resistance design of the blades, their cross-section is similar to the shape of a water droplet, and their trailing edges are sharp-angled structures, which are very easy to be damaged during hoisting. Especially for the super-long and super-flexible blades whose weight has increased significantly, conventional hoists combined with slings for hoisting, even if the slings are flexible, will also be damaged at the edge of the trailing edge of the blade.

[0003] To this end, the current common practice is to add a "blade guard" that fits the shape of the trailing edge to the trailing edge of the blade root and blade tip when the blade is suspended, so as to protect the trailing edge that contacts the sling during the lifting. However, due to the increase in the weight of the blade, the friction between the "blade guard" and the lower surface of the trailing edge of the blade and the weight of the guard are increasing. After the lifting is completed, it becomes very difficult to remove the guard by manpower alone. Since the direction of manually pulling out the guard cannot be completely parallel to the blade surface, and the manual pulling force is limited, it becomes increasingly difficult to manually remove the "blade guard" from the blade at a high altitude, and even the phenomenon of not being able to pull it out and damaging the blade occurs.

[0004] Therefore, there is an urgent need for a blade guard pulling device that can safely pull the blade guard out from the trailing edge of the blade. Summary of the invention

[0005] The utility model aims to overcome the above-mentioned shortcomings and provide a blade guard plate pulling device, which can safely pull the blade guard plate out from the trailing edge of the blade and has the advantages of simple structure, convenient operation, labor saving and high efficiency.

[0006] The purpose of the utility model is achieved in this way:

[0007] A blade guard plate pulling-out device is installed on a hanging beam of a blade hoisting mechanism located on the trailing edge side of a blade, and comprises a fixed bracket fixedly mounted on the end of the hanging beam, a movable bracket slidably arranged on the fixed bracket via a telescopic mechanism, a redirecting pulley arranged at the lower end of the movable bracket, and a steel wire rope passing around the redirecting pulley and connected to the blade guard plate; the steel wire rope is pulled by a traction mechanism to pull the blade guard plate out from the trailing edge of the blade.

[0008] Furthermore, the fixed bracket is a hollow structure, the upper end of the movable bracket is slidably embedded in the hollow structure of the fixed bracket, and the telescopic mechanism is an oil cylinder or an electric push cylinder whose two ends are respectively hinged to the fixed bracket and the movable bracket.

[0009] Furthermore, the traction mechanism is a winch arranged on the ground or on a suspension beam.

[0010] Furthermore, the winch is arranged on the top of the hanging beam, and a winch end pulley is installed on the top of the fixed bracket. The wire rope on the winch passes through the winch end pulley and the redirecting pulley in sequence and then is connected to the blade guard plate.

[0011] Furthermore, the rope outlet angle α from the winch to the winch end pulley is not greater than 5° to prevent rope tangling.

[0012] Furthermore, a handle is installed at the lower end of the movable bracket to facilitate the adjustment of the upper and lower positions of the movable bracket.

[0013] Furthermore, a rope loop is provided at the end of the steel wire rope, and is connected to the connecting buckle of the blade guard plate through a bow-shaped shackle and a double-eye sling in sequence.

[0014] Furthermore, the double-eye sling is provided with a length adjustment mechanism for adjusting the length of the double-eye sling to adapt to blade guards with different connecting buckle spacings.

[0015] Furthermore, a rope blocking device is installed on the redirecting pulley or the winch end pulley to prevent the wire rope from escaping from the pulley.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model adjusts the pulling direction of the wire rope by adjusting the upper and lower positions of the movable bracket and then adjusting the redirecting pulley, so that the pulling direction of the wire rope remains parallel to the lower surface of the trailing edge of the blade, and then the blade guard plate is pulled out in parallel along the extension direction of the lower surface of the trailing edge of the blade through the traction mechanism, so as to prevent the trailing edge of the blade from being damaged due to unbalanced pulling direction. The utility model has the advantages of simple overall structure, convenient operation, saving manpower and high work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a schematic diagram of the installation structure of a blade guard plate pulling device.

[0019] Figure 2 The utility model is a side view of a blade guard plate pulling device.

[0020] Figure 3 The utility model is a top view of a blade guard plate pulling device.

[0021] Figure 4This is a B-direction view of a blade guard plate pulling device of the utility model.

[0022] Figure 5 This is a partial enlarged view of a blade guard plate pulling device of the utility model.

[0023] Figure 6 The utility model is a structural schematic diagram of a blade guard plate pulling device.

[0024] Figure 7 This is a schematic diagram of the blade guard plate structure involved in the utility model.

[0025] in:

[0026] Winch 1, wire rope 2, winch end pulley 3, fixed bracket 4, telescopic mechanism 5, movable bracket 6, redirecting pulley 7, bow shackle 8, double eye sling 9, blade guard 10, rope stop device 11, blade 12, lifting mechanism 13, lifting beam 14, handle 15, connecting buckle 16, sling 17. DETAILED DESCRIPTION

[0027] See also Figure 1 to Figure 7 The utility model relates to a blade guard plate pulling device, which is installed on a hanging beam 14 of a blade hoisting mechanism 13 located on the trailing edge side of a blade 12, and comprises a fixed bracket 4 fixedly mounted on the end of the hanging beam 14, a movable bracket 6 slidably arranged on the fixed bracket 4 through a telescopic mechanism 5, a redirecting pulley 7 arranged at the lower end of the movable bracket 6, and a steel wire rope 2 connected to the blade guard plate 10 by bypassing the redirecting pulley 7; a handle 15 is installed at the lower end of the movable bracket 6 to facilitate the adjustment of the upper and lower positions of the movable bracket 6; a rope blocking device 11 is installed on the redirecting pulley 7 to prevent the steel wire rope 2 from slipping out of the pulley;

[0028] The fixed bracket 4 is a hollow structure, the upper end of the movable bracket 6 is slidably embedded in the hollow structure of the fixed bracket 4, and the telescopic mechanism 5 is an oil cylinder or an electric push cylinder with two ends respectively hinged to the fixed bracket 4 and the movable bracket 6; the telescopic mechanism 5 controls the extension length of the movable bracket 6 to achieve the purpose of adjusting the position of the redirecting pulley 7;

[0029] The steel wire rope 2 is pulled by a traction mechanism to pull the blade guard plate 10 out from the trailing edge of the blade 12; the traction mechanism is a winch 1 set on the ground or on the suspension beam 14, and the steel wire rope 2 can be pulled out by remotely controlling the winch 1, saving labor costs. When the winch 1 is set on the ground, the steel wire rope 2 on the winch 1 is redirected by the redirection pulley 7 and then connected to the blade guard plate 10, see Figure 6 When the winch 1 is arranged on the hanging beam 14, in the present embodiment, the winch 1 is mounted on the top of the hanging beam 14, see Figure 1A winch end pulley 3 is installed on the top of the fixed bracket 4. The wire rope 2 on the winch 1 passes through the winch end pulley 3 and the redirection pulley 7 in sequence and is connected to the blade guard plate 10. The rope outlet angle α from the winch 1 to the winch end pulley 3 is not greater than 5° to prevent the rope from being tangled; a rope blocking device 11 is installed on the winch end pulley 3 to prevent the wire rope 2 from slipping out of the pulley;

[0030] The end of the steel wire rope 2 is provided with a rope loop, and is connected to the connecting buckle 16 of the blade guard plate 10 through the bow shackle 8 and the double eye sling 9 in sequence, see Figure 4 ; The double-eye sling 9 is provided with a length adjustment mechanism for adjusting the length of the double-eye sling 9 to adapt to the blade guard 10 with different connecting buckle 16 spacings; the bow-shaped shackle 8 is slidably mounted on the double-eye sling 9, and when pulled by the wire rope 2, the bow-shaped shackle 8 automatically slides to the center position of the two connecting buckles 16, so that the left and right forces of the blade guard 10 are balanced to prevent the pulling direction from deviating to the left and right; the movable bracket 6 adjusts the height of the redirecting pulley 7 to make the pulling direction of the wire rope 2 parallel to the lower surface of the trailing edge of the blade 12 to prevent the pulling direction from deviating up and down;

[0031] By adding a set of blade guard plate pulling devices of the utility model to the lifting beams 14 located on one side of the root and the trailing edge of the blade tip of the blade 12 of the lifting mechanism 13, when the lifting belt 17 of the lifting mechanism 13 lifting the blade 12 is loosened, the winch 1 is controlled to remotely pull out the blade guard 10 to reduce labor costs; at the same time, the oil cylinder or electric push cylinder can be adjusted up and down so that the redirecting pulley 7 can guide the pulling direction of the wire rope 2 to be as parallel as possible to the trailing edge surface of the blade, thereby reducing the damage to the blade caused by lateral force generated by unbalanced direction; the pulling force of the winch 1 is sufficient and controllable, the pulling operation is simple, and the work efficiency is higher.

[0032] In addition: It should be noted that the above specific implementation is only an optimization scheme of this patent. Any changes or improvements made by technicians in this field based on the above concept are within the scope of protection of this patent.

Claims

1. A blade guard plate pulling device, mounted on a hanging beam (14) of a blade hanging mechanism (13) located on the trailing edge side of a blade (12), characterized in that: The invention comprises a fixed bracket (4) fixedly mounted on the end of a suspension beam (14), a movable bracket (6) slidably arranged on the fixed bracket (4) via a telescopic mechanism (5), a redirecting pulley (7) arranged at the lower end of the movable bracket (6), and a steel wire rope (2) passing around the redirecting pulley (7) and connected to a blade guard plate (10); the steel wire rope (2) is towed by a towing mechanism to pull the blade guard plate (10) out from the rear edge of a blade (12).

2. The blade guard plate pulling device according to claim 1, characterized in that: The fixed bracket (4) is a hollow structure, the upper end of the movable bracket (6) is slidably embedded in the hollow structure of the fixed bracket (4), and the telescopic mechanism (5) is an oil cylinder or an electric push cylinder with two ends respectively hinged to the fixed bracket (4) and the movable bracket (6).

3. The blade guard plate pulling device according to claim 1, characterized in that: The traction mechanism is a winch (1) arranged on the ground or on a suspension beam (14).

4. The blade guard plate pulling device according to claim 3, characterized in that: The winch (1) is arranged on the top of the suspension beam (14), and a winch end pulley (3) is installed on the top of the fixed bracket (4). The steel wire rope (2) on the winch (1) passes through the winch end pulley (3) and the redirecting pulley (7) in sequence and is connected to the blade guard plate (10).

5. The blade guard plate pulling device according to claim 4, characterized in that: The rope outlet angle α from the winch (1) to the winch end pulley (3) is no greater than 5°, so as to prevent the rope from becoming tangled.

6. The blade guard plate pulling device according to claim 1, characterized in that: A handle (15) is installed at the lower end of the movable bracket (6) to facilitate adjustment of the upper and lower positions of the movable bracket (6).

7. The blade guard plate pulling device according to claim 1, characterized in that: A rope loop is provided at the end of the steel wire rope (2), and is connected to a connecting buckle (16) of the blade guard plate (10) via a bow-shaped shackle (8) and a double-eye sling (9) in sequence.

8. The blade guard plate pulling device according to claim 7, characterized in that: The double eyelet sling (9) is provided with a length adjustment mechanism for adjusting the length of the double eyelet sling (9) to adapt to blade guards (10) with different connection buckle (16) spacings.

9. A blade guard plate pulling device according to any one of claims 1 to 8, characterized in that: A rope blocking device (11) is installed on the redirecting pulley (7) or the winch end pulley (3) to prevent the wire rope (2) from escaping from the pulley.

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