CN212245873U

CN212245873U - Blade adjusting and hoisting device for wind driven generator

Info

Publication number: CN212245873U
Application number: CN202022011848.8U
Authority: CN
Inventors: 刘作广; 黎燕航; 马涛; 谢丹
Original assignee: Hebei Suntien New Energy Technology Co Ltd
Current assignee: Hebei Suntien New Energy Technology Co Ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2020-12-29
Anticipated expiration: 2030-09-15

Abstract

A blade adjusting and hoisting device for a wind driven generator comprises two blade clamps and a tower top support, wherein the two blade clamps are connected through a fixed rod, an outer gear disc is movably connected to the fixed rod, an inner gear ring is arranged on the outer surface of the outer gear disc along the edge position, an outer gear is arranged on the outer gear disc in a manner of deviating from the axis center, the outer gear ring of the outer gear is meshed with the inner gear ring of the outer gear disc, a central shaft of the outer gear is in transmission connection with a driving end of a rotating motor, and the rotating motor is installed on the fixed; the upper surface of the tower top support is provided with a movable guide rail, a sliding block is connected in the movable guide rail in a sliding mode, a telescopic motor is fixedly installed at the end portion of the movable guide rail, the telescopic end of the telescopic motor is fixedly connected with one sliding block, a lifting machine is fixedly installed on the sliding block, and the driving end of the lifting machine is connected to an outer gear disc through a steel wire rope. The utility model overcomes prior art's is not enough, and whole process does not need large-scale lifting device, has saved the blade and has changed the expense greatly.

Description

Blade adjusting and hoisting device for wind driven generator

Technical Field

The utility model relates to a blade hoist and mount technical field of fan, concretely relates to blade adjustment hoist device for aerogenerator.

Background

With the increasing development of offshore wind power, the market demand for replacement and maintenance of large parts of offshore wind turbines is also sharply increased. As offshore wind power is far from land, "large part replacement difficulty" has become a common problem facing offshore wind power worldwide.

The large offshore part is replaced by a hoisting ship with supporting legs. According to research, in China, the cost of renting a landing leg hoisting boat is about 300 million RMB every time a large part of an offshore wind turbine is replaced. At present, the domestic landing leg ship has insufficient preservation quantity and high use cost, and becomes the bottleneck of reducing cost in the replacement operation of offshore wind turbine components.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a blade adjustment hoist device for aerogenerator has overcome the not enough of prior art, reasonable in design, and whole process does not need large-scale lifting device, has saved the blade and has changed the expense greatly. And the utility model discloses also be applicable to land wind-powered electricity generation blade hoist and mount.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a blade adjusting and hoisting device for a wind driven generator comprises two blade clamps and a tower top support, wherein the two blade clamps are fixedly installed on two sides of a gravity center point of a fan blade respectively, two side surfaces of the two blade clamps are connected through fixing rods, the fixing rods are arranged in parallel to the axis of the blade, outer gear discs are movably connected onto the fixing rods through rotating shafts, inner gear rings are arranged on the outer surfaces of the outer gear discs along edge positions, outer gear discs are arranged on the outer gear discs in a mode of deviating from the axis center, the outer gear rings of the outer gear discs are meshed with the inner gear rings of the outer gear discs, a central shaft of the outer gear is in transmission connection with a driving end of a rotating motor, the rotating motor is fixedly installed at one end of a mounting rack, and the other end; top of the tower support fixed mounting has a movable guide on the top of the tower support, sliding connection has the sliding block in the movable guide, movable guide's tip fixed mounting has flexible motor, the flexible end and a sliding block fixed connection of flexible motor, fixed mounting has the lifting machine on the sliding block, wire rope's one end is connected to the drive end of lifting machine, wire rope's other end fixed connection is on outer gear dish.

Preferably, the axial center position of the outer gear disc coincides with the gravity center point of the fan blade.

Preferably, the outer surface of the outer gear plate is fixedly connected with a hanging ring, and the other end of the steel wire rope is fixedly connected with the hanging ring.

Preferably, the lifting machine is provided with four, and evenly distributed on the movable guide rail of tower top support upper surface both sides, and the drive end of every lifting machine all is connected with wire rope, four wire rope connects respectively on the outer gear dish of blade both sides, and all fixedly connected with two wire rope on every outer gear dish.

The utility model provides a blade adjustment hoist device for aerogenerator. The method has the following beneficial effects: the outer gear ring of the outer gear is meshed with the inner gear ring of the outer gear disc to drive the outer gear disc to rotate, and the outer gear disc is pulled by the steel wire rope to prevent the outer gear disc from rotating absolutely, so that the whole blades are driven to rotate around the axis of the outer gear disc by the rotation of the outer gear along the edge of the outer gear disc to realize the effect of adjusting the installation angle of the blades; the steel wire rope is synchronously lifted upwards through the elevator, and meanwhile, the telescopic motor is controlled to drive the sliding block to slide in the movable guide rail, so that the elevator moves towards the cabin direction, and therefore, the fan blade is controlled to move to the tower top mounting position, and the mounting and fastening work of the blade root can be completed; the whole process does not need large-scale hoisting equipment, and the cost for replacing the blades is greatly saved.

Drawings

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

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a middle tower top bracket of the present invention;

FIG. 3 is a schematic structural view of a blade mounting member of the present invention;

fig. 4 is a schematic structural view of a tower top bracket according to a fourth embodiment of the present invention;

the reference numbers in the figures illustrate:

1. a blade clamp; 2. a tower top support; 3. fixing the rod; 4. a rotating shaft; 5. an outer gear plate; 6. an inner gear ring; 7. an outer gear; 8. rotating the motor; 9. a mounting frame; 10. a moving guide rail; 11. a slider; 12. a telescopic motor; 13. a hoist; 14. a wire rope; 15. a lifting ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention will be combined below to clearly and completely describe the technical solutions of the present invention.

In a first embodiment, as shown in fig. 1 to 3, a blade adjusting and hoisting device for a wind turbine generator includes two blade clamps 1 and a tower top bracket 2, the two blade clamps 1 are respectively and fixedly installed at two sides of a gravity center point of a fan blade, two side surfaces of the two blade clamps 1 are connected through fixing rods 3, the fixing rods 3 are arranged in parallel with axes of the blade, the fixing rods 3 are respectively and movably connected with an external gear disc 5 through a rotating shaft 4, an internal gear ring 6 is arranged on an outer surface of the external gear disc 5 along an edge position, an external gear 7 is arranged on the external gear disc 5 in a manner of deviating from an axis, the external gear ring of the external gear 7 is meshed with the internal gear ring of the external gear disc 5, a central shaft of the external gear 7 is in transmission connection with a driving end of a rotating motor 8, the rotating motor 8; the tower top support 2 is fixedly installed in a cabin of the fan, the movable guide rail 10 is fixedly installed on the upper surface of the tower top support 2, a sliding block 11 is connected in the movable guide rail 10 in a sliding mode, a telescopic motor 12 is fixedly installed at the end portion of the movable guide rail 10, the telescopic end of the telescopic motor 12 is fixedly connected with the sliding block 11, a lifting machine 13 is fixedly installed on the sliding block 11, the driving end of the lifting machine 13 is connected with one end of a steel wire rope 14, and the other end of the steel wire rope 14 is fixedly connected to the outer.

The working principle is as follows: during assembly, the blade clamps 1, the fixed rod 3 and other parts are fixedly arranged on the blade to be installed, the gravity center position of the blade is positioned between the two blade clamps 1, and then the end part of the steel wire rope 14 connected with the driving end of the elevator 13 is connected to the outer gear disc 5; when in hoisting, the hoisting machine 13 is controlled to pull the steel wire rope 14 to hoist the fan blade to a certain height, then the driving shaft of the rotating motor 8 is controlled to drive the external gear 7 to rotate, the external gear 7 can rotate along the edge of the external gear disk 5 through the meshing relation of the external gear ring of the external gear 7 and the internal gear ring of the external gear disk 5, and the external gear disk 5 is fixed through the steel wire rope 14, so that the whole blade is driven to rotate around the axis of the external gear disk 5, and the effect of adjusting the blade installation angle is realized; after the rotation is adjusted to a proper angle, the hoister 13 is controlled to synchronously hoist the steel wire rope 14 upwards, and meanwhile, the telescopic motor 12 is controlled to drive the sliding block 11 to slide in the movable guide rail 10, so that the hoister 13 moves towards the direction of the engine room, the fan blade is controlled to move to the mounting position at the top of the tower, and the mounting and fastening work of the blade root can be completed.

In the second embodiment, based on the further improvement of the first embodiment, the axial center position of the external gear disk 5 is ensured to coincide with the gravity center point of the fan blade. Thereby when hoist and mount, can guarantee that fan blade hoist and mount more stable, and can not take place the slope to when driving the rotation of external gear dish 5 through external gear 7, also can reduce certain power loss.

In the third embodiment, based on the further improvement of the first embodiment, the outer surface of the outer gear plate 5 is fixedly connected with a hanging ring 15, and the other end of the steel wire rope 14 is fixedly connected with the hanging ring 15. When hoisting, the end of the steel wire rope 14 is directly connected to the hoisting ring 15.

In the fourth embodiment, based on the further improvement of the first embodiment, four hoisting machines 13 are arranged and are uniformly distributed on the movable guide rails 10 on the two sides of the upper surface of the tower top support 2, the driving end of each hoisting machine 13 is connected with a steel wire rope 14, the four steel wire ropes 14 are respectively connected to the outer gear discs 5 on the two sides of each blade, and each outer gear disc 5 is fixedly connected with two steel wire ropes 14. The stability during hoisting is further ensured by the common lifting action of the four lifting machines 13, and in the combined embodiment, the four lifting machines 13 are respectively and correspondingly arranged on the four sliding blocks 11, and each sliding block 11 is correspondingly connected with a telescopic motor 12; the four lifting machines 13 can be lifted or moved synchronously and simultaneously and independently.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a blade adjustment hoist device for aerogenerator which characterized in that: the fan blade fixing device comprises two blade clamps (1) and a tower top support (2), wherein the two blade clamps (1) are respectively and fixedly arranged at two sides of the gravity center point of a fan blade, the two side surfaces of the blade clamps (1) are connected through fixing rods (3), the fixing rods (3) are parallel to the axis of the blade, outer gear discs (5) are movably connected onto the fixing rods (3) through rotating shafts (4), inner gear rings (6) are arranged on the outer surfaces of the outer gear discs (5) along the edge positions, outer gears (7) are arranged on the outer gear discs (5) in a mode of deviating from the axis center, the outer gear rings of the outer gears (7) are meshed with the inner gear rings of the outer gear discs (5), the central shaft of the outer gears (7) is in transmission connection with the driving end of a rotating motor (8), and the rotating motor (8) is fixedly arranged at, the other end of the mounting rack (9) is fixedly arranged on the fixed rod (3);

top of the tower support (2) fixed mounting has movable guide (10) in the cabin of fan, fixed surface installs movable guide (10) on top of the tower support (2), sliding connection has sliding block (11) in movable guide (10), the tip fixed mounting of movable guide (10) has flexible motor (12), the flexible end and a sliding block (11) fixed connection of flexible motor (12), fixed mounting has lifting machine (13) on sliding block (11), the one end of wire rope (14) is connected to the drive end of lifting machine (13), the other end fixed connection of wire rope (14) is on external gear dish (5).

2. The blade adjusting and hoisting device for the wind driven generator as claimed in claim 1, wherein: the axis position of the outer gear disc (5) coincides with the gravity center point of the fan blade.

3. The blade adjusting and hoisting device for the wind driven generator as claimed in claim 1, wherein: the outer gear plate (5) outer surface fixed connection has rings (15), the other end and rings (15) fixed connection of wire rope (14).

4. The blade adjusting and hoisting device for the wind driven generator as claimed in claim 1, wherein: the four hoisting machines (13) are uniformly distributed on the movable guide rails (10) on two sides of the upper surface of the tower top support (2), the driving end of each hoisting machine (13) is connected with a steel wire rope (14), the four steel wire ropes (14) are respectively connected to the outer gear discs (5) on two sides of each blade, and each outer gear disc (5) is fixedly connected with two steel wire ropes (14).