A hoisting mechanism for large wind power blades

Abstract

The utility model relates to the field of wind power installation technology especially, it relates to a hoisting mechanism for large -scale wind power blade, it includes operation platform, the top surface of operation platform is provided with the hanger, the bottom surface of operation platform is provided with two L shape's support frame, and the clamping assembly for clamping fixed blade is installed on the support frame, the winch is still installed on the operation platform, and the winch is connected with the locking band for tensioning fixed blade, and the bottom end of locking band is detachably fixed in the bottom of support frame through the limiting component. The hoisting mechanism is simple and convenient to operate, and the safety is high, can be widely used in wind power blade hoisting installation engineering.

Description

Technical Field

[0001] This utility model relates to the field of wind power installation technology, and in particular to a hoisting mechanism for large wind turbine blades. Background Technology

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives a rotor to rotate and ultimately outputs alternating current. During wind turbine assembly, the tower is typically installed in sections first, followed by the nacelle, and finally the three blades. Cranes and lifting equipment are commonly used for blade installation. Due to their large size and weight, and the significant impact of wind forces, the blade installation process is complex and time-consuming. High safety requirements exist for preventing falls during blade installation; therefore, a lifting mechanism for large wind turbine blades needs to be designed to improve safety during the blade installation process. Utility Model Content

[0003] To improve safety during blade hoisting, this utility model provides a hoisting mechanism for large wind turbine blades.

[0004] The present invention provides a hoisting mechanism for large wind turbine blades, which adopts the following technical solution: A hoisting mechanism for large wind turbine blades includes an operating platform, a hanger on the top surface of the operating platform, and two L-shaped support frames on the bottom surface of the operating platform. Clamping components for clamping and fixing the blades are installed on the support frames. A winch is also installed on the operating platform. The winch is connected to a locking strap for tightening and fixing the blades. The bottom end of the locking strap is detachably fixed to the bottom of the support frame by a limiting component.

[0005] By adopting the above technical solution, the locking strap, together with the clamping assembly, fixes the blade, which plays an auxiliary protective role and improves the safety during the hoisting process. In addition, the locking strap is easy to disassemble, which improves the convenience of operation.

[0006] Optionally, the limiting component includes a second hydraulic cylinder located at the bottom of the support frame. A plug rod is coaxially fixed to the piston rod of the second hydraulic cylinder. A socket block is also fixed to the bottom of the support frame. A socket slot is provided on the side of the socket block near the plug rod. The plug rod can be detachably inserted into the socket slot. A connecting cylinder is connected to the bottom end of the locking band. The connecting cylinder can be detachably sleeved on the plug rod.

[0007] By adopting the above technical solution, the connecting cylinder is sleeved on the insert rod, and the hydraulic cylinder can drive the insert rod to move, thereby detaching the connecting cylinder from the insert rod. Then, the locking belt can be wound up by a winch. This limiting component is easy to operate and has a significant effect.

[0008] Optionally, a mounting box is fixed to the bottom of the support frame, and the second hydraulic cylinder is installed inside the mounting box, with the insertion rod sliding through the side plate of the mounting box.

[0009] By adopting the above technical solution, the mounting box provides both protection and support for the connecting cylinder, making it easier to detach the connecting cylinder from the insertion rod.

[0010] Optionally, a buffer layer is fixed to the outside of the connecting cylinder.

[0011] By adopting the above technical solution, the buffer layer plays an elastic buffering role and provides protection for the connecting cylinder.

[0012] Optionally, a lifting ring is fixed to the outside of the connecting cylinder, and the locking strap passes through the lifting ring and is fixed by fastening bolts.

[0013] By adopting the above technical solution, the locking band and the connecting cylinder can be easily fixed by tightening bolts.

[0014] Optionally, the bottom end of the locking band is stacked on an intermediate pressure plate, and side pressure plates are respectively provided on both sides of the intermediate pressure plate. Fastening bolts are passed through the locking band, the intermediate pressure plate and the side pressure plates.

[0015] By adopting the above technical solution, the middle pressure plate and the side pressure plate cooperate with each other to further improve the firmness of the connection between the locking strip and the connecting cylinder.

[0016] Optionally, the clamping assembly includes a mounting bracket fixed to the top of the support frame, an arc-shaped movable clamping plate hinged in the middle of the support frame, an arc-shaped fixed clamping plate fixed to the bottom of the support frame, the arc-shaped opening of the movable clamping plate facing the arc-shaped opening of the fixed clamping plate, and a hydraulic cylinder for driving the movable clamping plate to rotate hinged between the mounting bracket and the tail end of the movable clamping plate.

[0017] By adopting the above technical solution, the hydraulic cylinder can drive the movable clamping plate to move up and down, thereby controlling the clamping of the blade. This clamping component is easy to operate and highly practical.

[0018] Optionally, a second guide ring is fixedly connected to the front end of the movable clamping plate, and a first guide ring is fixedly connected to the front end of the fixed clamping plate. The locking band is movably inserted into the second guide ring and the first guide ring.

[0019] By adopting the above technical solution, the second guide ring and the first guide ring have a limiting effect, which can restrict the movement trajectory of the locking strip, improve the stability of the locking strip during movement, and make the locking strip fit more tightly with the blade.

[0020] In summary, this utility model has at least one of the following beneficial technical effects: The locking strap, together with the clamping assembly, secures the blades, providing auxiliary protection and improving safety during hoisting. Furthermore, the locking strap is easy to disassemble, enhancing operational convenience. The connecting sleeve is fitted onto the insert rod. The hydraulic cylinder can drive the insert rod to move, thereby detaching the connecting sleeve from the insert rod. The locking tape can then be wound up by a winch. This limiting component is easy to operate and has a significant effect. A hydraulic cylinder can drive the movable clamping plate to move up and down, thereby controlling the clamping of the blade. This clamping assembly is easy to operate and highly practical. Attached Figure Description

[0021] Figure 1 This is a front view of a hoisting mechanism for large wind turbine blades according to an embodiment of this utility model.

[0022] Figure 2 This is a side view of a hoisting mechanism for large wind turbine blades according to an embodiment of this utility model.

[0023] Figure 3 This is a partial structural schematic diagram of the limiting component according to an embodiment of the present utility model.

[0024] Figure 4 This is a schematic diagram of the connecting cylinder according to an embodiment of the present utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Operating platform; 10. Hanger; 2. Support frame; 3. Clamping assembly; 30. Mounting frame; 31. Movable clamping plate; 310. Guide ring two; 32. Fixed clamping plate; 320. Guide ring one; 33. Hydraulic cylinder one; 4. Locking band; 40. Intermediate pressure plate; 41. Side pressure plate; 42. Fastening bolt; 5. Winch; 6. Limiting assembly; 60. Mounting box; 61. Hydraulic cylinder two; 62. Insert rod; 63. Socket block; 630. Socket slot; 64. Connecting cylinder; 640. Buffer layer; 641. Lifting ring. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 The present invention will be described in further detail below.

[0027] This utility model discloses a hoisting mechanism for large wind turbine blades. (Refer to...) Figure 1 and Figure 2 A hoisting mechanism for large wind turbine blades includes an operating platform 1, a hanger 10 fixedly connected to the top surface of the operating platform 1, and two L-shaped support frames 2 fixedly connected to the bottom surface of the operating platform 1. Clamping components 3 for fixing the blades are installed on the support frames 2.

[0028] Reference Figure 1 and Figure 2The clamping assembly 3 includes a mounting bracket 30 fixed to the top of the support frame 2, an arc-shaped movable clamping plate 31 hinged to the middle of the support frame 2, and an arc-shaped fixed clamping plate 32 fixed to the bottom of the support frame 2. The arc-shaped opening of the movable clamping plate 31 and the arc-shaped opening of the fixed clamping plate 32 are arranged facing each other. A hydraulic cylinder 33 for driving the movable clamping plate 31 to rotate is hinged between the mounting bracket 30 and the tail end of the movable clamping plate 31.

[0029] Reference Figure 1 and Figure 2 The hoisting mechanism also includes a locking strap 4 for protection. A guide ring 320 is fixed to the front end of the fixed clamping plate 32, and a guide ring 310 is fixed to the front end of the movable clamping plate 31. A winch 5 for winding or releasing the locking strap 4 is installed on the operating platform 1. One end of the locking strap 4 is connected to the winch 5, and the other end of the locking strap 4 passes downward through the guide ring 310 and the guide ring 320 in sequence. The bottom end of the locking strap 4 is fixed by a limiting component 6.

[0030] Reference Figures 1-3 The limiting component 6 includes a mounting box 60 fixed to the bottom of the support frame 2. A second hydraulic cylinder 61 is installed inside the mounting box 60. A plug rod 62 is coaxially fixed to the piston rod of the second hydraulic cylinder 61, and the plug rod 62 slides through the mounting box 60. A socket block 63 is also fixed to the bottom of the support frame 2. A socket slot 63 is opened on the side of the socket block 63 near the plug rod 62, and the plug rod 62 can be detachably inserted into the socket slot 630.

[0031] Reference Figure 4 The bottom end of the locking band 4 is connected to a connecting tube 64, which is detachably sleeved on the insert rod 62. An elastic buffer layer 640 is fixed to the outside of the connecting tube 64, and a lifting ring 641 is fixed to the outer wall of the connecting tube 64. The end of the locking band 4 passes through the lifting ring 641 and is stacked on a middle pressure plate 40. A side pressure plate 41 is provided on both sides of the middle pressure plate 40 to cooperate in pressing and fixing the locking band 4. The middle pressure plate 40, the side pressure plates 41 and the locking band 4 are fixed by fastening bolts 42.

[0032] The implementation principle of a large wind turbine blade hoisting mechanism according to this utility model embodiment is as follows: A crane lifts the operating platform 1 via a jack 10. The blade is clamped and fixed by a clamping assembly 3 and locked in place by a locking strap 4 to enhance safety. During blade installation, firstly, the hydraulic cylinder 61 is controlled to retract, causing the connecting cylinder 64 to disengage from the insert rod 62. Then, the winch 5 is controlled to wind up the locking strap 4. The locking strap 4 drives the connecting cylinder 64 upward through the guide ring 320 and the guide ring 310, thereby releasing the locking effect of the locking strap 4 on the blade. Finally, the clamping assembly 3 is controlled to release the blade. This hoisting mechanism is easy to operate, highly safe, and widely applicable to wind turbine blade hoisting and installation projects.

[0033] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A hoisting mechanism for large wind turbine blades, characterized in that: The system includes an operating platform (1), a hanger (10) on the top surface of the operating platform (1), two L-shaped support frames (2) on the bottom surface of the operating platform (1), a clamping assembly (3) for clamping and fixing the blades is installed on the support frame (2), a winch (5) is also installed on the operating platform (1), the winch (5) is connected to a locking band (4) for tightening and fixing the blades, and the bottom end of the locking band (4) is detachably fixed to the bottom of the support frame (2) by a limiting assembly (6).

2. A lifting mechanism for large wind turbine blades according to claim 1, characterised in that: The limiting component (6) includes a hydraulic cylinder two (61) located at the bottom of the support frame (2). A plug rod (62) is coaxially fixed to the piston rod of the hydraulic cylinder two (61). A socket block (63) is also fixed to the bottom of the support frame (2). A socket slot (630) is provided on the side of the socket block (63) near the plug rod (62). The plug rod (62) can be detachably inserted into the socket slot (630). A connecting tube (64) is connected to the bottom end of the locking band (4). The connecting tube (64) can be detachably sleeved on the plug rod (62).

3. A lifting mechanism for large wind turbine blades according to claim 2, characterised in that: The support frame (2) is fixed to the bottom of the mounting box (60), the hydraulic cylinder (61) is installed in the mounting box (60), and the insertion rod (62) slides through the side plate of the mounting box (60).

4. A lifting mechanism for large wind turbine blades according to claim 2, characterised in that: A buffer layer (640) is fixed to the outside of the connecting cylinder (64).

5. A lifting mechanism for large wind turbine blades according to claim 2, characterised in that: A lifting ring (641) is fixed to the outside of the connecting cylinder (64), and the locking strap (4) passes through the lifting ring (641) and is fixed by the fastening bolt (42).

6. A lifting mechanism for large wind turbine blades according to claim 5, characterised in that: The bottom end of the locking band (4) is stacked on a middle pressure plate (40), and side pressure plates (41) are respectively provided on both sides of the middle pressure plate (40). Fastening bolts (42) are inserted through the locking band (4), the middle pressure plate (40) and the side pressure plates (41).

7. A lifting mechanism for large wind turbine blades according to any of the claims 1-6, characterised in that: The clamping assembly (3) includes a mounting bracket (30) fixed to the top of the support frame (2), an arc-shaped movable clamping plate (31) hinged in the middle of the support frame (2), an arc-shaped fixed clamping plate (32) fixed to the bottom of the support frame (2), the arc-shaped opening of the movable clamping plate (31) and the arc-shaped opening of the fixed clamping plate (32) facing each other, and a hydraulic cylinder (33) for driving the movable clamping plate (31) to rotate is hinged between the mounting bracket (30) and the tail end of the movable clamping plate (31).

8. A lifting mechanism for large wind turbine blades according to claim 7, characterised in that: The movable clamping plate (31) is fixedly connected to the front end of the guide ring two (310), the fixed clamping plate (32) is fixedly connected to the front end of the guide ring one (320), and the locking band (4) is movably inserted into the guide ring two (310) and the guide ring one (320).

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