Hoisting mechanism of wind driven generator

Abstract

The utility model discloses a hoisting mechanism of a wind driven generator, and relates to the field of wind driven generators. A hoisting mechanism of a wind driven generator comprises a generator body and a main hoisting cable. Three threaded holes are formed in the generator body; the threaded hole is formed in a side shell of the generator body and is communicated with the outside; an equilateral triangle with an included angle of 60 degrees is formed between the midpoints of the threaded holes; the interior of the threaded hole is in threaded connection with a connecting bolt; the wind driven generator hoisting tool is provided with the connecting bolts and the threaded holes, and the wind driven generator can be uniformly stressed in the hoisting process through the design of the equilateral triangle between the threaded holes, so that the phenomenon that the generator deviates due to non-uniform stress in the hoisting process is prevented; by means of threaded connection between the connecting bolts and the threaded holes, the hoisting mechanism can provide a large safety coefficient while being easy to install, and therefore the wind driven generator can be simply and rapidly hoisted through a simple structure.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine generators, in particular to a hoisting mechanism for a wind turbine generator. Background Art

[0002] A wind turbine is a device that converts wind energy into mechanical energy, and then converts it into electrical energy through a generator. It uses the kinetic energy of wind to drive the generator to rotate, thereby generating electrical energy. During the installation of a wind turbine, it needs to be hoisted to a higher position, and the safety of the hoisting needs to be ensured during the hoisting process.

[0003] For example, the Chinese utility model patent with the announcement number CN216518403U discloses a wind turbine hoisting structure, including a support plate, which is arranged at the tail of the wind turbine nacelle, and a hinged support structure is arranged at the bottom of the support plate, and a counterweight mechanism is connected to the end of the hinged support structure, and an auxiliary lifting hook is also connected to the hinged support structure. When the auxiliary lifting hook is lifted, the support plate lifts the wind turbine nacelle;

[0004] The above scheme has the following problems: when the device is in use, the balance beam is also lifted upward during the lifting process of the auxiliary lifting hook head through the principle of lever. Since one end of the balance beam is connected to the counterweight mechanism, the other end of the balance beam is tilted. During the tilting process, the support plate installed at the end of the balance beam abuts against the bottom of the wind turbine cabin, thereby lifting the wind turbine. In order to ensure that the lifting structure can adapt to wind turbines of different heights and types, a plurality of first connecting parts connected to the auxiliary lifting hook head are arranged at intervals on the balance beam, and the lifting position of the balance beam and the auxiliary lifting hook head can be selected according to actual needs; when the lifting mechanism is in use, the balance beam needs to be installed at the bottom of the wind turbine. When the wind turbine is on the ground, the balance beam is not easy to install below it, and the wind turbine needs to be lifted for installation. The lifting process is relatively complicated and the structure is not convenient for lifting.

[0005] Therefore, we propose a hoisting mechanism for a wind turbine generator in order to solve the above-mentioned problems. Utility Model Content

[0006] The utility model aims to provide a hoisting mechanism for a wind turbine generator, so as to solve the problem that the hoisting mechanism for a wind turbine generator in the current market has a complicated hoisting structure and is inconvenient to hoist.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hoisting mechanism for a wind turbine, comprising a generator body and a main hoisting rope; three threaded holes are provided on the generator body; the threaded holes are provided on the side outer shell of the generator body and are connected to the outside; the midpoints of the threaded holes form an equilateral triangle with an angle of 60° between each other; the inside of the threaded hole is threadedly connected to the connecting bolt.

[0008] The above technical solution can be used to install the generator in an equilateral triangle on the generator body shell through the connecting bolts so that the generator is evenly stressed during hoisting and no deviation problem occurs during hoisting.

[0009] As a preferred technical solution of the utility model, fastening bolts are additionally installed at the connection between the connecting bolts and the generator body; four fastening bolts are arranged at the connection between each connecting bolt and the generator body.

[0010] The above technical solution can strengthen the connection between the connecting bolts and the generator body by tightening the bolts.

[0011] As the preferred technical solution of the utility model, the fastening bolt is installed on the generator body through the fastening plate, and a steel rope embedding groove is arranged on the outside of the fastening bolt; the steel rope embedding groove is arranged on the outside of the connecting bolt; the steel rope embedding groove and the connecting bolt are of an integrated design; and the steel rope embedding groove is arranged on the outside of the connecting bolt.

[0012] By adopting the above technical solution, the hoisting rope can be connected to the connecting bolt through the steel rope engaging groove, so as to hoist the generator.

[0013] As a preferred technical solution of the utility model, the steel rope embedding groove is provided with a branch cable hoisting rope; the branch cable hoisting rope connects the generator body with the hoisting frame through the steel rope embedding groove; the branch cable hoisting rope is wound in the steel rope embedding groove.

[0014] By adopting the technical solution, the three connecting bolts can be connected separately by separate cable hoisting ropes, which is convenient for hoisting.

[0015] As the preferred technical solution of the utility model, the branch cable lifting rope is cabled above the generator body to form a main lifting rope; the main lifting rope is divided into three branch cable lifting ropes through a branching plate; the branching plate is provided with three branching openings, and the branch cable lifting ropes pass through the three openings and are wrapped around the steel rope fitting grooves respectively.

[0016] The above technical solution can make the strength of the lifting rope higher during the lifting process through the main lifting rope, and the main lifting rope can be divided into three branch lifting ropes through the branching plate to lift the generator.

[0017] As a preferred technical solution of the present utility model, an axial end stopper is provided at the outer axial end of the connecting bolt; the axial end stopper and the connecting bolt are of an integrated design.

[0018] Adopting the above technical solution can increase the overall strength of the mechanism.

[0019] As a preferred technical solution of the present utility model, the main lifting rope is made of steel wire rope.

[0020] The above technical solution can ensure safe and reliable lifting by using steel wire ropes.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] 1. The utility model is provided with connecting bolts and threaded holes. The equilateral triangle design between the threaded holes enables the wind turbine to be evenly stressed during the hoisting process, thereby preventing the generator from being offset due to uneven stress during the hoisting process. The threaded connection between the connecting bolts and the threaded holes enables the hoisting mechanism to provide a large safety factor while being easy to install, thereby enabling the wind turbine to be simply and quickly hoisted through a simple structure;

[0023] 2. The utility model is provided with a steel rope embedding groove. By winding the cable distribution lifting rope around the steel rope embedding groove arranged on the side of the connecting bolt, the axial force between the steel rope embedding groove and the generator during the lifting process makes the bolt more evenly stressed, thereby reducing the torsion of the bolt caused by the load. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0025] Figure 2 This is a side view of the structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the utility model when viewed from above;

[0027] Figure 4 This is a schematic diagram of the cable structure of the total hoisting rope of the utility model;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the part of the connecting bolts on the side of the generator body of the utility model.

[0029] In the figure: 1. Generator body; 2. Main lifting rope; 3. Connecting bolts; 4. Fastening bolts; 5. Branch cable lifting rope; 6. Branch plate; 7. Steel rope fitting groove; 8. Shaft end stopper; 9. Threaded hole. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0031] See also Figure 1-5 The utility model provides a technical solution: a hoisting mechanism of a wind turbine generator, including a generator body 1 and a total hoisting rope 2; three threaded holes 9 are opened on the generator body 1; the threaded holes 9 are opened at the side shell of the generator body 1 and connected to the outside; the midpoints of the threaded holes 9 form an equilateral triangle with an angle of 60°; the inside of the threaded hole 9 is threadedly connected with the connecting bolt 3; a fastening bolt 4 is installed at the connection between the connecting bolt 3 and the generator body 1; four fastening bolts 4 are arranged at the connection between each connecting bolt 3 and the generator body 1; the fastening bolt 4 is installed on the generator body 1 through a fastening plate, and a steel rope embedding groove 7 is arranged outside the fastening bolt 4; the steel rope embedding groove 7 is arranged outside the connecting bolt 3; the steel rope embedding groove 7 and the connecting bolt 3 are of an integrated design; the outer side of the connecting bolt 3 is provided with a steel rope embedding groove 7; the connecting bolt 3 is connected to the threaded hole 9 opened on the shell of the generator body 1, and then fixed by the fastening bolt 4, and the hoisting can be started after the threaded holes 9 at the three locations are connected to the connecting bolt 3.

[0032] The steel rope embedding groove 7 is provided with a branch cable hoisting rope 5; the branch cable hoisting rope 5 connects the generator body 1 with the hoisting frame through the steel rope embedding groove 7; the branch cable hoisting rope 5 is wound in the steel rope embedding groove 7; the branch cable hoisting rope 5 is cabled above the generator body 1 to form a total hoisting rope 2; the total hoisting rope 2 is divided into three branch cable hoisting ropes 5 through a branching plate 6; three branching openings are opened on the branching plate 6, and the branch cable hoisting ropes 5 pass through the three openings and are wound on the steel rope embedding groove 7 respectively; the connecting screw An axial end stopper 8 is provided at the outer axial end of the bolt 3; the axial end stopper 8 and the connecting bolt 3 are of an integrated design; the main lifting rope 2 is made of a steel wire rope; the main lifting rope 2 is passed through the branching plate 6 to divide the main lifting rope 2 into three identical branch lifting ropes 5, and the branch lifting ropes 5 are wound around the steel rope fitting groove 7 between the connecting bolt 3 and the axial end stopper 8. After the branch lifting rope 5 is lowered, the connecting bolt 3 at its lower end is connected to the threaded hole 9 opened on the shell of the generator body 1.

[0033] Working principle: When using the hoisting mechanism of the wind turbine, first, the main hoisting rope 2 is passed through the branching plate 6 to divide the main hoisting rope 2 into three identical branch hoisting ropes 5. The branch hoisting rope 5 is wound around the steel rope fitting groove 7 between the connecting bolt 3 and the shaft end block 8. After the branch hoisting rope 5 is lowered, the connecting bolt 3 at its lower end is connected to the threaded hole 9 opened on the shell of the generator body 1, and then it is fixed by the tightening bolt 4. After the threaded holes 9 at three locations are connected to the connecting bolt 3, the hoisting can begin.

[0034] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A hoisting mechanism for a wind turbine generator, comprising a generator body (1) and a main hoisting rope (2); Features: The generator body (1) is provided with three threaded holes (9); the threaded holes (9) are provided at the side outer shell of the generator body (1) and are connected to the outside; the midpoints of the threaded holes (9) mutually form an equilateral triangle with an angle of 60°; the inside of the threaded holes (9) is threadedly connected to the connecting bolts (3).

2. The hoisting mechanism of the wind turbine according to claim 1, characterized in that: A fastening bolt (4) is additionally installed at the connection point between the connecting bolt (3) and the generator body (1); four of the fastening bolts (4) are arranged at the connection point between each connecting bolt (3) and the generator body (1).

3. The hoisting mechanism of the wind turbine according to claim 2, characterized in that: The fastening bolt (4) is mounted on the generator body (1) via a fastening plate; a steel rope embedding groove (7) is provided on the outside of the fastening bolt (4); the steel rope embedding groove (7) is provided on the outside of the connecting bolt (3); the steel rope embedding groove (7) and the connecting bolt (3) are of an integrated design; and the outer side of each connecting bolt (3) is provided with a steel rope embedding groove (7).

4. The hoisting mechanism of the wind turbine generator according to claim 3, characterized in that: The steel rope embedding groove (7) is provided with a branch cable hoisting rope (5); the branch cable hoisting rope (5) connects the generator body (1) and the hoisting frame through the steel rope embedding groove (7); the branch cable hoisting rope (5) is wound in the steel rope embedding groove (7).

5. The hoisting mechanism of the wind turbine generator according to claim 4, characterized in that: The branch cable hoisting rope (5) is cabled above the generator body (1) to form a main hoisting rope (2); the main hoisting rope (2) is divided into three branch cable hoisting ropes (5) through a branching plate (6); the branching plate (6) is provided with three branching openings, and the branch cable hoisting ropes (5) pass through the three openings and are wound around the steel rope embedding groove (7).

6. The hoisting mechanism of the wind turbine generator according to claim 3, characterized in that: An axial end stopper (8) is provided at the outer axial end of the connecting bolt (3); the axial end stopper (8) and the connecting bolt (3) are of an integrated design.

7. The hoisting mechanism of the wind turbine generator according to claim 5, characterized in that: The main lifting rope (2) is made of a steel wire rope.

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