CN219325210U

CN219325210U - Bolt extractor for maintaining wind turbine generator

Info

Publication number: CN219325210U
Application number: CN202320517472.9U
Authority: CN
Inventors: 林柏东; 刘强; 刘金宝; 赵刚; 张帅; 王慧静; 唐艳涛
Original assignee: Daan Runfeng Energy Development Co ltd
Current assignee: Daan Runfeng Energy Development Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-07-11
Anticipated expiration: 2033-03-17

Abstract

The utility model relates to the technical field of wind turbine generator repair and discloses a bolt extractor for wind turbine generator repair, which comprises a support frame and a long screw rod, wherein the support frame comprises a fixed bracket and a thickened gasket arranged on a support platform of the fixed bracket; the long screw is inserted into the thickened gasket, and the two ends of the long screw are screwed with a first nut and a second nut; the fixed bracket comprises a support column, and a plurality of pin holes are formed in the longitudinal direction of the support column; the supporting platform is connected with the pin holes on the support posts through pins; the bottom ends of the side surfaces of the first nut and the second nut are welded with cylindrical bosses. The double-end screw rod pulling device is simple in structure, and can be taken out through simple connection and rotation without manual pulling, so that the risk of personnel damage is avoided, and the damage to the double-end screw rod is reduced; the use of operation space that significantly reduces can be used in narrow and small workspace, through adjusting supporting platform height, realizes the flexibility demand of bolt extractor.

Description

Bolt extractor for maintaining wind turbine generator

Technical Field

The utility model relates to the technical field of maintenance of wind turbines, in particular to a bolt extractor for maintenance of wind turbines.

Background

The wind turbine generator is one of core equipment of a wind power plant, and the running stability and the overhauling rapidity of the wind turbine generator directly influence the power generation efficiency; along with the long-time practicality of wind turbine generator system, can take place the cracked condition of blade. When the broken blade and the pitch bearing connecting bolt are replaced, in order to prevent the problem that the broken bolt brings strength damage to other bolts, 5 bolts are replaced left and right in the prior art.

The connecting bolt between the blade and the variable pitch bearing is a double-head screw rod, and the blade end is provided with a sealing ring for preventing rain and moisture. Because sealing washer and hole frictional force are great, in addition, receive the narrow and small influence of operation space, manual direct outwards draws comparatively difficultly, also causes personnel to damage simultaneously.

Therefore, how to safely and rapidly take out the connecting bolt between the blade and the pitch bearing is a technical problem to be solved in the field.

Disclosure of Invention

The utility model mainly solves the technical problems in the prior art and provides a bolt extractor for maintaining a wind turbine generator.

In order to achieve the purpose, the utility model adopts the following technical scheme that the bolt extractor for maintaining the wind turbine generator comprises a support frame and a long screw rod; the support frame comprises a fixed support and a thickening washer arranged on a support platform of the fixed support; the long screw is inserted into the thickened gasket, and a first nut and a second nut are screwed at two ends of the long screw.

Preferably, the fixing bracket comprises a support column, and a plurality of pin holes are formed in the longitudinal direction of the support column; the supporting platform is connected with the pin holes on the support columns through pins, and the supporting platform is connected with different pin holes to adjust the height of the supporting platform.

Preferably, cylindrical bosses are welded at the bottom ends of the side surfaces of the first nut and the second nut.

The working principle of the utility model is as follows:

the bolt extractor is arranged on the pitch bearing, one end of the long screw rod and one end of the stud bolt are screwed together by rotating the second nut, the first nut is rotated to be in contact with the thickened washer, the first nut is continuously rotated to enable the long screw rod to move upwards, and then the stud bolt is driven to ascend through the second nut. When the operation space is too narrow, the supporting platform is connected with the pin hole below the fixed support through pins, and meanwhile, the supporting platform is connected with the shorter long screw rod through pins, if the first nut or the second nut is inconvenient to rotate through a spanner, the supporting platform can be sleeved on a boss of the nut through a sleeve pipe, and the supporting platform can rotate through a lever principle.

Advantageous effects

The utility model provides a bolt extractor for maintaining a wind turbine generator. The beneficial effects are as follows:

(1) Simple structure through simple connection and rotation, can realize taking out double-end screw rod, need not the manual work and pulls out, has avoided personnel to damage the risk promptly and has reduced the damage to double-end screw rod again.

(2) The use of operation space that significantly reduces can be used in narrow and small workspace, through adjusting supporting platform height, realizes the flexibility demand of bolt extractor.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic illustration of a pitch bearing;

FIG. 2 is a schematic view of a double-ended screw;

FIG. 3 is a schematic structural diagram of embodiment 1 of the present utility model;

fig. 4 is a schematic structural diagram of embodiment 2 of the present utility model.

Legend description:

1. a long screw; 2. a fixed bracket; 3. thickening the gasket; 4. a first nut; 5. a second nut; 6. a support post; 7. a pin hole; 8. a support platform; 9. a boss.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 3, a bolt extractor for repairing a wind turbine generator comprises a support frame and a long screw 1, and is characterized in that: the support frame comprises a fixed support 2 and a thickening washer 3 arranged on a support platform of the fixed support 2; the long screw 1 is inserted into the thickened washer 3, and the two ends of the long screw are screwed with the first nut 4 and the second nut 5;

in this embodiment, the fixing bracket 2 and the supporting platform are integrally formed.

The working principle of the embodiment is as follows: the bolt extractor is arranged on a variable pitch bearing (see fig. 1), one end of a long screw rod 1 and one end of a stud bolt (see fig. 2) are screwed together by rotating a second nut 5, the first nut 4 is rotated to be in contact with a thickening washer 3, the first nut 4 is continuously rotated to enable the long screw rod 1 to move upwards, and then the stud bolt is driven to ascend through the second nut 5.

The long screw is screwed with the stud by adopting the nut, so that the damage to the stud is effectively avoided; along with the long-term use of the bolt extractor, only the thickened gasket 3 needs to be replaced, so that the cost is low and the operation is convenient.

Example 2

Referring to fig. 4, a bolt extractor for repairing a wind turbine generator comprises a support frame and a long screw 1, and is characterized in that: the support frame comprises a fixed support 2 and a thickening washer 3 arranged on a support platform of the fixed support 2; the long screw 1 is inserted into the thickened washer 3, and the two ends of the long screw are screwed with the first nut 4 and the second nut 5; the fixed bracket 2 comprises a support column 6, and a plurality of pin holes 7 are longitudinally arranged on the support column 6; the supporting platform 8 is connected with pin holes 7 on the support posts 6 through pins, and the supporting platform 8 is connected with different pin holes 7 to realize the adjustment of the height of the supporting platform 8; the bottom ends of the side surfaces of the first nut 4 and the second nut 5 are welded with cylindrical bosses 9.

The working principle of the embodiment is as follows: the bolt extractor is arranged on a pitch bearing, one end of the long screw rod 1 and one end of the stud bolt are connected together in a screwed mode by rotating the second nut 5, the first nut 4 is rotated to be in contact with the thickening washer 3, the first nut 4 is rotated continuously to enable the long screw rod 1 to move upwards, and then the stud bolt is driven to ascend through the second nut 5. When the operation space is too narrow, the supporting platform 8 is in pin connection with the pin hole 7 below the fixed support 2, and meanwhile, the supporting platform is replaced by the shorter long screw 1, if the first nut 4 or the second nut 5 is inconvenient to rotate by a spanner, the supporting platform can be sleeved on the boss 9 of the nut by a sleeve, and the supporting platform can rotate by the lever principle.

The use of operation space that significantly reduces can be used in narrow and small workspace, through adjusting supporting platform height, realizes the flexibility demand of bolt extractor.

Claims

1. The utility model provides a bolt extractor that wind turbine generator system maintenance was used, includes support frame and long screw rod (1), its characterized in that: the support frame comprises a fixed support (2) and a thickening washer (3) arranged on a support platform of the fixed support (2); the long screw rod (1) is inserted into the thickened gasket (3), and a first nut (4) and a second nut (5) are screwed at two ends of the long screw rod.

2. The bolt remover for repairing a wind turbine generator according to claim 1, wherein: the fixed support (2) comprises a support column (6), and a plurality of pin holes (7) are longitudinally formed in the support column (6); the supporting platform (8) is connected with the pin holes (7) on the supporting columns (6) through pins, and the supporting platform (8) is connected with different pin holes (7) to adjust the height of the supporting platform (8).

3. The bolt remover for repairing a wind turbine generator according to claim 1, wherein: cylindrical bosses (9) are welded at the bottom ends of the side surfaces of the first nut (4) and the second nut (5).