CN211144702U

CN211144702U - Blade installation angle adjusting tool

Info

Publication number: CN211144702U
Application number: CN201922429215.6U
Authority: CN
Inventors: 陈国飞
Original assignee: Beijing Xinye New Energy Technology Co ltd
Current assignee: Beijing Xinye New Energy Technology Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-07-31
Anticipated expiration: 2029-12-27

Abstract

The utility model relates to a blade installation angle adjustment tool, including adjusting bolt and first adjusting device. The first adjusting device comprises a first washer and a first wedge-shaped block, the first wedge-shaped block is fixedly connected onto the first washer, the first washer can be sleeved on the adjusting bolt, and the inner side face of the first wedge-shaped block is attached to the outer wall of the adjusting bolt. The utility model discloses when the pitch angle of needs adjusting blade, at first install angle adjusting device on adjusting bolt through the packing ring, form the angle adjustment instrument, then will be used for connecting a bolt of blade and wheel hub and remove, insert waist shape hole with the angle adjustment instrument that finishes of assembling to among the twist blade, at the twist in-process, because the effect of wedge, make the blade slowly adjust towards the pivoted direction, target in place until the adjustment.

Description

Blade installation angle adjusting tool

Technical Field

The utility model relates to an angle adjustment instrument, concretely relates to blade installation angle adjustment instrument of wind-powered electricity generation.

Background

For a fixed pitch wind generating set, blades are directly connected to a hub through bolts (the blades and the hub form a wind wheel, as shown in fig. 1, the blades 200 are screwed on the hub 100 through bolts 300, mounting holes on the hub 100 are kidney-shaped holes 400, the bolts 300 are screwed with the blades 200 after penetrating through the kidney-shaped holes 400), the hub is connected with a main shaft, the main shaft is connected with a gear box, the gear box is connected with a generator, and thus kinetic energy generated by rotation of the wind wheel is transmitted to the generator through the gear box to generate electric energy. The electric energy is merged into the power grid and is transmitted to thousands of households.

However, for a fixed pitch wind generating set, after the blades are installed, the blades cannot rotate, but the density of air is changed due to climate change, the density of air in winter is different from that of air in summer, and the difference is large in some regions. The change of the air density directly influences the normal operation of the wind generating set, and in order to ensure the normal operation of the fixed-pitch wind generating set, the pitch angle of the pitch blade needs to be adjusted according to the weather condition. In the prior art, the blades are usually detached to adjust the installation angles of the blades, and large-scale crane equipment is needed for detaching the blades, so that the blades are expensive and labor-consuming.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a blade installation angle adjustment instrument accomplishes the pitch angle of adjusting the fixed pitch blade under the condition of not dismantling the blade for blade on-line adjustment need not large crane equipment, saves time and cost.

In order to accomplish the above object, the present invention provides a blade installation angle adjusting tool, including an adjusting bolt and a first adjusting device. The first adjusting device comprises a first washer and a first wedge-shaped block, the first wedge-shaped block is fixedly connected onto the first washer, the first washer can be sleeved on the adjusting bolt, and the inner side face of the first wedge-shaped block is attached to the outer wall of the adjusting bolt.

Preferably, the blade installation angle adjusting tool further comprises a second adjusting device, the second adjusting device comprises a second washer and a second wedge block, the second wedge block is fixedly connected to the second washer, the second washer can be sleeved on the adjusting bolt, and the inner side face of the second wedge block is attached to the outer wall of the adjusting bolt.

Further preferably, the width of the first wedge block is the same as the radius of the first washer.

Still further preferably, the width of the second wedge block is less than the ring width of the second washer.

Further preferably, the projection of the first wedge block on the vertical plane is trapezoidal, and the projection of the second wedge block on the vertical plane is triangular.

Preferably, the adjusting bolt is further sleeved with an adjusting washer.

The utility model has the advantages that:

the utility model discloses when the pitch angle of needs adjusting blade, at first install angle adjusting device on adjusting bolt through the packing ring, form the angle adjustment instrument, then will be used for connecting a bolt of blade and wheel hub and remove, insert waist shape hole with the angle adjustment instrument that finishes of assembling to among the twist blade, at the twist in-process, because the effect of wedge, make the blade slowly adjust towards the pivoted direction, target in place until the adjustment.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view of a prior art blade to hub connection;

fig. 2 is a schematic view of a first adjustment tool of the present invention in use;

fig. 3 is a schematic perspective view of a first adjusting tool of the present invention;

fig. 4 is a top view of a first adjustment tool of the present invention;

fig. 5 is a side view of a first adjustment tool of the present invention;

fig. 6 is a schematic view of a second adjustment tool of the present invention in use;

fig. 7 is a schematic perspective view of a second adjusting tool of the present invention;

fig. 8 is a top view of a second adjustment tool of the present invention;

fig. 9 is a side view of a second adjustment tool of the present invention.

Description of the reference numerals

100. A hub; 200. a blade; 300. a bolt; 110. a waist-shaped hole;

10. adjusting the bolt; 20. an adjusting washer;

30. a first adjusting device; 31. a first gasket; 32. a first wedge block;

40. a second adjusting device; 41. a second gasket; 42. a second wedge block.

Detailed Description

The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the drawings in the embodiment of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

As shown in fig. 2, the present embodiment provides a blade setting angle adjusting tool, which includes an adjusting bolt 10 and a first adjusting device 30, wherein the adjusting bolt 10 is threaded with a blade 200 after passing through a kidney-shaped hole 110 on a hub 100, and the first adjusting device 30 is mounted on the adjusting bolt 10 coaxially with the adjusting bolt 10. Specifically, as shown in fig. 2 to 6, the first adjusting device 30 includes a first washer 31 and a first wedge 32, the first wedge 32 is fixedly connected to the first washer 31, and preferably, the first wedge 32 is welded to the first washer 31. As shown in fig. 3, the first washer 31 is annular, and the adjuster bolt 10 is inserted through a through hole in the middle of the first washer 31 such that the first washer 31 is coaxially mounted on the adjuster bolt 10. As shown in fig. 2, the inner side surface of the first wedge block 32 is attached to the outer wall of the adjusting bolt 10, and the projection of the first wedge block 32 on the vertical plane is trapezoidal, that is, the bottom of the first wedge block 32 is flat-bottomed. In this embodiment, the width of the first wedge block 31 is the same as the radius of the first washer, so that the adjustment range of the installation angle can be enlarged without damaging the first wedge block 31. When the first adjusting device 30 is used to adjust the installation angle of the blade, the bolts 400 for connecting the blade 200 with the hub 100 are first detached, then the remaining bolts 400 are all loosened, then the first washer 31 is installed on the adjusting bolt 10, and then the adjusting bolt 10 is threaded into the blade 200 after passing through the kidney-shaped hole 110, so that the head of the first wedge 32 enters the kidney-shaped hole 110. After the first wedge block 32 enters the kidney-shaped hole, the adjusting bolt 10 is continuously screwed into the blade until the inclined surface of the first wedge block 32 abuts against the hole wall of the kidney-shaped hole 110, whether the entrance angle of the first wedge block 32 is proper or not is checked at the joint of the first wedge block 32 and the hole wall of the kidney-shaped hole 110, if not, the entrance angle of the first wedge block 32 is adjusted until the first wedge block is proper, if so, the adjusting bolt 10 is continuously screwed to drive the first wedge block 32 to continuously move downwards, and because the hub 100 is not moved, the first wedge block 32 pushes the blade 200 to rotate, so that the adjustment of the installation angle of the blade 200 is achieved. After the adjustment is completed, the adjustment adjusting bolt 10 is taken out, the bolt 400 is screwed in, and the rest of the bolts 400 are screwed, so that torque is applied, and the operation is completed.

In addition, when the distance between the adjustment bolt 10 and the kidney hole 110 is relatively small, the adjustment of the installation angle cannot be achieved using the first adjustment device 30, and therefore, the present embodiment also provides the second adjustment device 40. Specifically, as shown in fig. 6 to 9, the second adjusting device 40 includes a second washer 41 and a second wedge block 42, the second wedge block 42 is fixedly connected to the second washer 41, and preferably, the second wedge block 42 is welded to the second washer 41. As shown in fig. 7, the second washer 41 is annular, and after the adjuster bolt 10 passes through the through hole in the middle of the second washer 41, the second washer 41 is coaxially attached to the adjuster bolt 10, and the inner surface of the second wedge 42 is fitted to the outer wall of the adjuster bolt 10. The projection of the second wedge block 42 on the vertical plane is triangular, that is, the bottom of the second wedge block 32 is sheet-shaped, so that the second wedge block 42 is inserted into the kidney-shaped hole 110. In this embodiment, the width of the second wedge 42 is slightly smaller than the ring width of the second washer 41 to prevent the second wedge 42 from breaking. The second adjusting device 40 is used in the same way as the first adjusting device 30, and is not described herein again.

In addition, an adjusting washer 20 is sleeved on the adjusting bolt 10, and the adjusting washer 20 is positioned between the nut of the adjusting bolt 10 and the first adjusting device 30 or the second adjusting device 40, so that the nut is prevented from directly contacting the first washer 31 or the second washer 41, and the first washer 31 or the second washer 41 is prevented from being broken.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Claims

1. A blade setting angle adjustment tool, comprising:

adjusting the bolt;

first adjusting device, first adjusting device includes first packing ring and first wedge, first wedge fixed connection be in on the first packing ring, first packing ring can cup joint adjusting bolt is last, the medial surface of first wedge with adjusting bolt's outer wall is laminated mutually.

2. The blade setting angle adjusting tool according to claim 1, further comprising a second adjusting device, wherein the second adjusting device includes a second washer and a second wedge, the second wedge is fixedly connected to the second washer, the second washer can be sleeved on the adjusting bolt, and an inner side surface of the second wedge is attached to an outer wall of the adjusting bolt.

3. The blade setting angle adjustment tool of claim 2, wherein a width of the first wedge block is the same as a radius of the first washer.

4. The blade setting angle adjustment tool of claim 3, wherein the width of the second wedge block is less than the ring width of the second washer.

5. The blade setting angle adjustment tool of claim 2, wherein a projection of the first wedge block on a vertical plane is trapezoidal and a projection of the second wedge block on a vertical plane is triangular.

6. The blade setting angle adjusting tool of claim 1, wherein an adjusting washer is further sleeved on the adjusting bolt.