CN211004162U

CN211004162U - Impeller hoisting device of wind generating set

Info

Publication number: CN211004162U
Application number: CN201922094615.6U
Authority: CN
Inventors: 刘翌
Original assignee: Hunan Chuang Neng Power Engineering Co ltd
Current assignee: Hunan Chuang Neng Power Engineering Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-07-14
Anticipated expiration: 2029-11-28

Abstract

The utility model relates to an impeller hoisting device of a wind generating set, which comprises a positioning rod, two side fixing mechanisms of a symmetrical fixing device at the bottom of the positioning rod and a turning and pulling mechanism fixed at the front end of the top of the positioning rod, wherein the side fixing mechanisms respectively comprise a positioning base which is integrally and fixedly connected at the left side and the right side of the bottom of the positioning rod, a first fixed pulley is arranged on the positioning base through rotation, and a sling is respectively wound outside the first fixed pulley; the turning and pulling mechanism comprises a turning and pulling support fixedly connected to the front end of the top of the positioning rod in an integrated mode, a second fixed pulley is rotatably mounted on the turning and pulling support, the rotating mounting directions of the second fixed pulley and the first fixed pulley are perpendicular to each other, and a pulling rope is wound outside the second fixed pulley. The utility model converts the sliding friction into rolling friction, reduces the friction coefficient and reduces the abrasion degree; the dispatching regulation is converted into one-way traction through isosceles triangle positioning, all the traction is concentrated on the fixed pulley block, the operation is more convenient, and the efficiency is higher.

Description

Impeller hoisting device of wind generating set

Technical Field

The utility model relates to a wind power generation field specifically indicates a wind generating set's impeller hoist device.

Background

In the installation process of the wind generating set, the tower is usually fixedly installed, the engine room is fixed at the top end of the tower, and then the impeller of the fan is hoisted. When the impeller is installed, the butt joint of the impeller and the main shaft and the installation of each connecting piece can be realized only by ensuring that the flange surface of the main shaft is parallel and opposite to the flange surface of the hub of the impeller. At present, the impeller of the wind generating set is mainly installed by hanging the roots of two blades of the impeller by a hanging strip of a hoisting device and then hoisting the blades to a proper installation position by using a crane to hook the hoisting device; and then controlling the other blade by another crane to turn over the impeller and align and correct the impeller to be installed, thereby completing the installation of the impeller.

In the above installation method, when the angle of the impeller is adjusted, since the friction force between the blade root and the hanging strip of the hoisting device is large, the friction coefficient is reduced by converting the sliding friction into the rotational friction by adding the pulley in the prior art. However, the problem that the position of the hanging strip connected with the pulley is different when the impeller blade is hung is still solved, so that the stress of the hanging strip is unbalanced, and the hanging strip is adjusted again in the rough waist. During angle adjustment, one crane is used for improving the height of the impeller, the other crane is used for lifting and adjusting the angle of the impeller, and the two cranes are matched with the whole adjusting operation to have high difficulty, difficult operation, poor control and poor matching; even re-hoisting the impeller or pulling by a large number of installers to control the inclination of the impeller is required, which reduces the hoisting efficiency and accuracy to some extent and also increases the installation costs.

Consequently, design a section and on reducing the coefficient of friction that hoist and mount produced, alleviateed the basis to the wearing and tearing of impeller, improve and use convenient performance, change the multi-angle regulation into one-way tractive to simple structure's impeller hoist device is the utility model discloses a research purpose.

Disclosure of Invention

Problem to above-mentioned prior art exists, the utility model provides a wind generating set's impeller hoist device, this impeller hoist device can effectively solve the problem that above-mentioned prior art exists.

The technical scheme of the utility model is that:

an impeller hoisting device of a wind generating set comprises a positioning rod, two side fixing mechanisms symmetrically fixed on the left side and the right side of the bottom of the positioning rod, and a turning and pulling mechanism fixed at the front end of the top of the positioning rod, wherein the side fixing mechanisms respectively comprise positioning bases fixedly connected to the left side and the right side of the bottom of the positioning rod in an integrated manner, first fixed pulleys are rotatably mounted on the positioning bases through positioning through grooves longitudinally penetrating through the positioning bases and first shafts fixed in the front and the back, and slings used for connecting any two blades of an impeller are respectively wound outside the first fixed pulleys;

the turning and pulling mechanism comprises a turning and pulling support fixedly connected to the front end of the top of the positioning rod in an integrated mode, a second fixed pulley is rotatably mounted on the turning and pulling support through a limiting through groove longitudinally penetrating through the turning and pulling support and a second shaft fixed to the left and the right, the rotating mounting directions of the second fixed pulley and the first fixed pulley are perpendicular to each other, and a pulling rope used for being connected with the other blade of the impeller is wound outside the second fixed pulley.

And a lifting ring for connecting a crane is fixedly connected to the top of the positioning rod.

The side edges of the positioning base and the turning and pulling support at the joint of the positioning rod are provided with reinforcing plates integrated with the positioning base and the turning and pulling support.

The sling is formed by connecting a flat sling for hoisting the root part of the impeller blade and a pull rope wound with a first fixed pulley end to end.

The traction rope is formed by connecting a flat sling ring for hoisting the root part of the impeller blade and a traction rope wound with a second fixed pulley.

The utility model has the advantages that:

1) the utility model discloses a set up on the locating lever and form two solid mechanisms in side of triangle-shaped structure and turn over the traction mechanism, it is effectual with many cranes of tradition lift by crane the regulation and adjust the operation degree of difficulty big, need the irregular manual work of multi-angle to judge the operation, it lifts by crane to change into single hoist, two first fixed pulleys are used for lifting by crane two fixed impeller blades, set up the second fixed pulley with first fixed pulley rotation direction mutually perpendicular and act on another blade, traction device power rolling makes its another blade lifting accomplish fixed point lifting action and carries out angle modulation, the upset is produced on the fixed pulley, one-way tractive, whole upset application of force, it is all concentrated on the fixed pulley group, the operation is more convenient, efficiency improves more.

2) The sliding friction of the impeller hoisting is converted into rolling friction through the arrangement of two side fixing mechanisms which are symmetrically arranged on the positioning rod and are rotatably provided with the first fixed pulleys, so that the friction coefficient is reduced, and the abrasion degree is reduced; the side fixing mechanism and a lifting point on the positioning rod form isosceles triangle positioning, and under the interaction of the gravity action of the impeller and the rotation adjustment of the first fixed pulley of the side fixing mechanism, the impeller is quickly, conveniently and constantly adjusted to be vertical and stable when lifted, so that the center of the impeller is positioned at the center of the positioning rod, and further the phenomenon that the impeller is lifted again during subsequent angle adjustment can be avoided.

3) The sling and the traction rope are respectively connected by a flat sling and a pull rope, and a flat sling ring and the traction rope, and the friction force between the flat sling and the flat sling ring and the impeller blade is reduced by increasing the contact surface, so that the abrasion degree is reduced, and the connection stability is ensured; the use of tension and traction cords for the attachment of the fixed pulleys in turn promotes the fluency of adjustment.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the usage state of the present invention.

Detailed Description

To facilitate understanding of those skilled in the art, the structure of the present invention will now be described in further detail with reference to the following examples:

referring to fig. 1-2, an impeller hoisting device of a wind generating set comprises a positioning rod 1, two side fixing mechanisms 2 symmetrically fixed on the left and right sides of the bottom of the positioning rod 1, and a turning and pulling mechanism 3 fixed at the front end of the top of the positioning rod 1, and is characterized in that: the side fixing mechanism 2 comprises positioning bases 201 integrally and fixedly connected to the left side edge and the right side edge of the bottom of the positioning rod 1, first fixed pulleys 204 are rotatably mounted on the positioning bases 201 through positioning through grooves 202 longitudinally penetrating through the positioning bases 201 and first shafts 203 fixed in front and at the back, and slings 4 used for connecting any two blades of the impeller 7 are respectively wound outside the first fixed pulleys 204;

the turning and pulling mechanism 3 comprises a turning and pulling support 301 integrally and fixedly connected to the front end of the top of the positioning rod 1, a second fixed pulley 304 is rotatably mounted on the turning and pulling support 301 through a limiting through groove 302 longitudinally penetrating through the turning and pulling support 301 and a second shaft 303 fixed left and right, the rotating mounting directions of the second fixed pulley 304 and the first fixed pulley 204 are perpendicular to each other, and a pulling rope 5 used for connecting another blade of the impeller 7 is wound outside the second fixed pulley 304.

And a lifting ring 6 for connecting a crane is fixedly connected to the top of the positioning rod 1.

The positioning base 201 and the turning and towing support 301 are provided with reinforcing plates 7 integrated with the positioning base 201 and the turning and towing support at the side of the joint of the positioning rod 1.

The sling 4 is formed by connecting a flat sling 401 for hoisting the root part of the blade of the impeller 7 and a pull rope 402 wound around the first fixed pulley 204 end to end.

The pulling rope 5 is formed by connecting a flat sling ring 501 for hoisting the root part of the blade of the impeller 7 and a pulling rope 502 wound by the second fixed pulley 304.

Through the utility model discloses carry out impeller 7 and lift by crane the flow of adjusting the installation as follows:

1) hanging the flat sling 401 wound with the sling 4 of the first fixed pulley 204 on two blades of the impeller 7, hanging the flat sling loop 501 wound with the traction rope 5 of the second fixed pulley 304 on the other blade of the impeller 7, and not applying the traction rope 502 on the traction force;

2) the crane is used for lifting the impeller 7, and the gravity of the impeller 7 and the lifting points on the side fixing mechanism and the positioning rod form an isosceles triangle positioning effect to ensure that the other blade of the impeller 7 is vertically arranged;

3) when the impeller 7 is lifted to the installation position by the crane, the power of the traction device winds the traction rope 5 to lift the other blade. The angle can be adjusted effectively and conveniently.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a wind generating set's impeller hoist device, includes locating lever (1), symmetry fixing device at two side solid mechanisms (2) of locating lever (1) bottom left and right sides and fix turning over of locating lever (1) top front end and drag mechanism (3), its characterized in that: the side fixing mechanisms (2) respectively comprise positioning bases (201) fixedly connected to the left side and the right side of the bottom of the positioning rod (1) in an integrated mode, first fixed pulleys (204) are rotatably mounted on the positioning bases (201) through positioning through grooves (202) longitudinally penetrating through the positioning bases (201) and first shafts (203) fixed in front and at the back, and slings (4) used for connecting any two blades of the impeller are respectively wound outside the first fixed pulleys (204);

the turning and pulling mechanism (3) comprises a turning and pulling support (301) fixedly connected to the front end of the top of the positioning rod (1) in an integrated mode, a second fixed pulley (304) is rotatably mounted on the turning and pulling support (301) through a limiting through groove (302) longitudinally penetrating through the turning and pulling support (301) and a second shaft (303) fixed on the left and right sides, the rotating mounting directions of the second fixed pulley (304) and the first fixed pulley (204) are perpendicular to each other, and a pulling rope (5) used for being connected with the other blade of the impeller is wound outside the second fixed pulley (304).

2. The impeller hoisting device of the wind generating set according to claim 1, characterized in that: and a lifting ring (6) for connecting a crane is fixedly connected to the top of the positioning rod (1).

3. The impeller hoisting device of the wind generating set according to claim 1, characterized in that: the positioning base (201) and the turning and pulling support (301) are provided with reinforcing plates (7) which are integrated with the positioning base and the turning and pulling support at the side edges of the connecting part of the positioning rod (1).

4. The impeller hoisting device of the wind generating set according to claim 1, characterized in that: the sling (4) is formed by connecting a flat sling (401) for hoisting the root part of the impeller blade and a pull rope (402) wound with a first fixed pulley (204) end to end.

5. The impeller hoisting device of the wind generating set according to claim 4, characterized in that: the traction rope (5) is formed by connecting a flat sling ring (501) for hoisting the root part of the impeller blade and a traction rope (502) wound by a second fixed pulley (304).