Variable-angle mounting lifting appliance for wind power blade

Abstract

The utility model relates to a variable-angle mounting lifting appliance for a wind power blade. Comprising a lifting beam, a lifting point at one end of the lifting beam is connected with a first lifting belt through an axial adjusting chain block, a lifting point at the other end of the lifting beam is directly connected with the first lifting belt, and the other end of the first lifting belt is connected with a lifting hook on a crane; two ends of the hanging beam are connected with bearings with vertical seats, the bottoms of the bearings with the vertical seats are connected with support clamping plates, a plurality of cross beams are arranged between the support clamping plates, one cross beam on the outer side of the bottom of each support clamping plate is connected with a second hanging belt, the other end of each second hanging belt is connected with a chordwise adjusting chain block, and the other end of each chordwise adjusting chain block is connected with the middle of the hanging beam; the outer sides of two ends of the bottom of the bracket splint are connected with two ends of the tightening belt; the utility model relates to a variable-angle lifting appliance for blades of small and medium-sized wind driven generators, which is suitable for distributed stations. Modular assembly is achieved, operation is easy, and safety and reliability are achieved; and a power supply and a cable are not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine generator sets, in particular to a wind turbine blade variable angle installation hanger. Background Art

[0002] At present, individual wind turbine blades need to be replaced during installation and operation and maintenance. The current mainstream technology application is hydraulic and electric single-blade variable-angle installation hoists, which are mainly used for the installation and replacement of individual blades of large wind turbines.

[0003] Hydraulic single blade variable angle installation spreader:

[0004] Principle: The hydraulic system provides power, and the blade angle is adjusted and the lifting is controlled by controlling the flow and pressure changes of the oil. Application scenarios: Suitable for the installation and replacement of blades of large wind turbines. Advantages: Compact structure, strong power, flexible operation, and high precision and stability. Disadvantages: The hydraulic system may have the risk of oil leakage and has high requirements for sealing performance; at the same time, the maintenance cost of the hydraulic system is relatively high; the lifting device is a whole, and the transportation cost is high, which is not suitable for small and medium-sized wind turbine blades at distributed sites; professional operation is required; power supply or cable pulling is required.

[0005] Electric single blade variable angle installation spreader:

[0006] Principle: Use the motor to drive the mechanical structure, and control the speed and direction of the motor to adjust the blade angle and control the lifting. Application scenarios: It is also suitable for the installation and replacement of blades of large wind turbines, especially when efficient and environmentally friendly lifting solutions are required. Advantages: Electric hoists have the advantages of fast response speed, energy saving and environmental protection, easy operation, and relatively low maintenance costs. Disadvantages: Compared with hydraulic systems, electric hoists may be slightly insufficient in power output and stability, especially in scenarios that need to withstand large loads and complex working conditions; the control system is relatively complex; professional personnel are required to operate; power supply or pulling cables are required.

[0007] After searching, patent publication number CN103723614B discloses a 30-degree angle installation hoist for wind turbine blades and its hoisting method. However, the hoist is used to hoist a single blade, and the single blade cannot be installed at a variable angle to align the holes.

[0008] Patent publication number CN113003401A discloses a fully rotating single-blade multifunctional hoist. However, for large electric hydraulic blade hoists, there may be a risk of oil leakage in the hydraulic system, and high sealing performance requirements are required. At the same time, the maintenance cost of the hydraulic system is also relatively high. The hoist is an integral unit, and the transportation cost is high, which is not suitable for small and medium-sized wind turbine blades at distributed sites. It needs professional operation and requires power supply and cumbersome control system.

[0009] Patent publication number CN107826970A discloses a single-blade installation hanger for a wind turbine generator set. However, the hydraulic cylinder blade installation hanger has the risk of oil leakage and requires cables. Utility Model Content

[0010] Aiming at the technical problems that existing installation hangers are not suitable for small and medium-sized wind turbine blades at distributed sites, blades cannot be installed at variable angles and holes, and existing installation hangers require cables and power supplies, a wind turbine blade variable angle installation hanger is proposed.

[0011] The technical solution of the utility model is: a wind turbine blade variable angle installation hoist, comprising a hanging beam, with hanging beam hanging points at both ends of the hanging beam, the hanging beam hanging point at one end of the hanging beam being connected to one end of a first hanging belt through an axial adjustment hand chain hoist, the hanging beam hanging point at one end of the hanging beam away from the axial adjustment hand chain hoist being connected to the other end of the first hanging belt, and the first hanging belt being used for hooking fishing on a crane;

[0012] Both ends of the lifting beam are fixedly connected with vertical seat bearings, which are fixed to the upper part of the bracket plywood. The bracket plywood is a trapezoidal frame structure. A plurality of crossbeams are arranged between the two bracket plywoods to form a three-dimensional trapezoidal frame structure. A crossbeam on the outside of the three-dimensional trapezoidal frame structure is connected to a second sling. The end of the second sling away from the crossbeam is connected to a chord-wise adjustment hand chain hoist. The end of the chord-wise adjustment hand chain hoist away from the second sling is connected to the midpoint of the lifting beam.

[0013] The outer sides of the two ends of the bottom of the bracket splint are connected with the two ends of the tightening belt.

[0014] Preferably, one end of the lifting beam connected to the axial adjustment hand chain hoist is on the same side as the blade root of the wind turbine blade.

[0015] Preferably, the vertical seat bearing is connected to the bracket clamping plate by bolts.

[0016] Preferably, both ends of the crossbeam are connected to the bracket clamping plates by bolts.

[0017] Preferably, a beam hanging point is provided in the middle of the outer beam, and the beam hanging point is connected to the second sling.

[0018] Preferably, the outer sides of both ends of the bottom of the bracket splint are provided with lifting ears, and the lifting ears are connected to the two ends of the tightening belt.

[0019] The beneficial effects of the present invention are as follows: the present invention provides a wind turbine blade variable angle installation hanger, which is suitable for small and medium-sized wind turbine blade variable angle hangers at distributed sites; modular assembly, simple operation, safe and reliable; and does not require power supply or cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an exploded schematic diagram of the utility model's wind turbine blade variable angle installation hanger;

[0021] Figure 2 It is a three-dimensional schematic diagram of the utility model of the wind turbine blade variable angle installation hanger.

[0022] In the figures, the component names corresponding to the reference numerals are as follows:

[0023] 1. Wind turbine blade; 2. Bracket clamp; 21. Lifting eye; 3. Vertical seat bearing; 4. Lifting beam; 41. Lifting beam lifting point; 5. First lifting belt; 6. Axial adjustment hand chain hoist; 7. Chordal adjustment hand chain hoist; 8. Crossbeam; 81. Crossbeam lifting point; 9. Second lifting belt; 10. Tightening belt. DETAILED DESCRIPTION

[0024] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0025] refer to Figure 1 As shown, the utility model provides a wind turbine blade variable angle installation hoist, including a hanging beam 4, with hanging beam hanging points 41 at both ends of the hanging beam 4, the hanging beam hanging point 41 at one end of the hanging beam 4 is connected to one end of a first lifting belt 5 through an axial adjustment hand chain hoist 6, the hanging beam hanging point 41 at one end of the hanging beam 4 away from the axial adjustment hand chain hoist 6 is directly connected to the other end of the first lifting belt 5, the first lifting belt 5 is used to hook the hook on the crane, and the end of the hanging beam 4 connected to the axial adjustment hand chain hoist 6 is on the same side as the blade root of the wind turbine blade 1;

[0026] Both ends of the hanging beam 4 are fixedly connected with a vertical seat bearing 3, and the vertical seat bearing 3 is fixed to the upper part of the bracket plywood 2 by bolts. The bracket plywood 2 is a trapezoidal frame structure, and the bracket plywood 2 is formed by welding. A plurality of cross beams 8 are provided between the two bracket plywoods 2. The two ends of the cross beam 8 are connected to the two bracket plywoods 2 by bolts to form a three-dimensional trapezoidal frame structure. A cross beam hanging point 81 is provided in the middle of a cross beam 8 on the outside of the three-dimensional trapezoidal frame structure. The cross beam hanging point 81 is connected to a second sling 9. The end of the second sling 9 away from the cross beam 8 is connected to the chord-wise adjustment hand hoist 7, and the end of the chord-wise adjustment hand hoist 7 away from the second sling 9 is connected to the midpoint of the hanging beam 4;

[0027] The outer sides of both ends of the bottom of the bracket clamping plate 2 are provided with lifting ears 21, which are connected to both ends of the tightening belt 10. The lifting ears 21 and the tightening belt 10 can be welded to clamp the wind turbine blade 1;

[0028] The specific working method and beneficial effects are as follows: Figure 2 As shown, each component is transported independently and will be assembled on site. Welded lifting ears 21 are welded at both ends of the bracket splint 2 for fixing the tightening belt 10, and a beam lifting point 81 for chord-wise angle adjustment is welded in the middle of the beam 8; the welding lifting ears 2 of the bracket splint 2 are welded to the tightening belt 10 to support the wind turbine blade 1; the axial angle is adjusted by adjusting the chain length of the axial adjustment hand chain hoist 6; the chord-wise angle is adjusted by adjusting the chain length of the chord-wise adjustment hand chain hoist 7 to align the blade with the mounting hole of the hub; it is suitable for small and medium-sized wind turbine blade variable angle hoists at distributed sites; modular assembly, simple operation, safe and reliable; no power supply and cable pulling are required.

[0029] It should be noted that the orientations or positional relationships indicated by the above-mentioned terms "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. "Multiple" means two or more. "Installation", "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.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form or substance. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be considered as the scope of protection of the present invention. Any technician familiar with this profession can make some changes, modifications and equivalent changes made by using the technical content disclosed above without departing from the spirit and scope of the present invention, which are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A wind turbine blade variable angle installation hanger, characterized in that: The invention comprises a suspension beam (4), wherein suspension beam suspension points (41) are provided at both ends of the suspension beam (4), the suspension beam suspension point (41) at one end of the suspension beam (4) is connected to one end of a first suspension belt (5) through an axially adjustable hand chain hoist (6), the suspension beam suspension point (41) at one end of the suspension beam (4) away from the axially adjustable hand chain hoist (6) is connected to the other end of the first suspension belt (5), and the first suspension belt (5) is used for hooking fishing on a crane; Both ends of the hanging beam (4) are fixedly connected with vertical seat bearings (3), which are fixed to the upper part of the bracket clamp (2), and the bracket clamp (2) is a trapezoidal frame structure. A plurality of crossbeams (8) are provided between the two bracket clamps (2) to form a three-dimensional trapezoidal frame structure. A crossbeam (8) on the outside of the three-dimensional trapezoidal frame structure is connected to a second sling (9), and the end of the second sling (9) away from the crossbeam (8) is connected to a chord-wise adjustment hand chain hoist (7), and the end of the chord-wise adjustment hand chain hoist (7) away from the second sling (9) is connected to the midpoint of the hanging beam (4); The outer sides of the two ends of the bottom of the bracket splint (2) are connected to the two ends of the tightening belt (10).

2. The wind turbine blade variable angle installation hanger according to claim 1, characterized in that: One end of the hanging beam (4) connected to the axial adjustment hand chain hoist (6) is on the same side as the blade root of the wind turbine blade (1).

3. The wind turbine blade variable angle installation hanger according to claim 1, characterized in that: The vertical seat bearing (3) is connected to the bracket clamping plate (2) via bolts.

4. The wind turbine blade variable angle installation hanger according to claim 1, characterized in that: Both ends of the crossbeam (8) are connected to the bracket clamping plate (2) via bolts.

5. The wind turbine blade variable angle installation hanger according to claim 1, characterized in that: A crossbeam hanging point (81) is provided in the middle of the outer crossbeam (8), and the crossbeam hanging point (81) is connected to the second sling (9).

6. The wind turbine blade variable angle installation hanger according to claim 1, characterized in that: The outer sides of the two ends of the bottom of the bracket clamp (2) are provided with hanging ears (21), and the two ends of the tightening belt (10) are connected to the hanging ears (21).

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