CN212717886U

CN212717886U - Wind power gear box body

Info

Publication number: CN212717886U
Application number: CN202021280885.2U
Authority: CN
Inventors: 田永琳; 王红; 常涛
Original assignee: Nanjing High Speed Gear Manufacturing Co Ltd
Current assignee: Nanjing High Speed Gear Manufacturing Co Ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-03-16
Anticipated expiration: 2030-07-02

Abstract

The utility model relates to the technical field of wind power generation, in particular to a wind power gear box body, which comprises a first box body; the second box body is arranged on the first box body, and the first box body and the second box body form a wind power gear box body with a hollow cavity; the low-speed shaft bearing seat is arranged on the first box body and communicated with the hollow cavity; the high-speed shaft bearing seat is partially arranged on the first box body and partially arranged on the second box body; the high speed shaft bearing mount is configured to: when the second box body and the first box body are buckled to form the wind power gear box body, the high-speed shaft bearing seat forms a complete circle and is communicated with the hollow cavity. The utility model discloses can guarantee the rigidity of low-speed axle bearing frame behind the branch case, reduce the oil leak risk simultaneously.

Description

Wind power gear box body

Technical Field

The utility model relates to a wind power generation technical field especially relates to a wind-powered electricity generation gear box.

Background

With the development of society, the demand of energy is gradually increased, and the conversion of fossil energy into secondary energy which can be directly used has low efficiency and causes environmental pollution. However, wind energy is a clean energy source and has a great energy value, and therefore, more and more wind power generators are put into use.

The wind power gear box of the existing wind driven generator is generally in a planetary stage and parallel stage structure form, wherein a box body is used as a structure for supporting parallel stage shafts and gears and ensuring normal operation of the parallel stage shafts and the gears, a bearing seat is required to have enough rigidity, and meanwhile, the wind power gear box has sealing performance and can prevent internal lubricating oil from leaking and external foreign matters from entering. As shown in fig. 1, in order to meet the requirement of disassembly and assembly, the conventional box separation mode is that the bearing seat central connecting line box separation divides the box body into a first box body 1 'and a second box body 2'.

For the mode of connecting the centers of the bearing seats and separating the boxes, the box separating surfaces are connected by bolts, and because the low-speed shaft bearing seat 3 ' is more greatly loaded than the high-speed shaft bearing seat 4 ', the rigidity of the low-speed shaft bearing seat 3 ' is greatly weakened after the low-speed shaft bearing seat is split; meanwhile, the box separation surface is close to the bottom oil pool, and the risk of oil leakage is increased.

Therefore, a wind power gearbox casing is needed to solve the technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wind-powered electricity generation gear box can guarantee the rigidity of low-speed axle bearing frame behind the branch case, reduces the oil leak risk simultaneously.

To achieve the purpose, the utility model adopts the following technical proposal:

a wind power gearbox housing comprising:

a first case;

the second box body is arranged on the first box body, and the first box body and the second box body form a wind power gear box body with a hollow cavity;

the low-speed shaft bearing seat is arranged on the first box body and communicated with the hollow cavity;

the high-speed shaft bearing seat is partially arranged on the first box body and partially arranged on the second box body;

the high speed shaft bearing mount is configured to: when the second box body and the first box body are buckled to form the wind power gear box body, the high-speed shaft bearing seat forms a complete circle and is communicated with the hollow cavity.

Optionally, the upper side of the first box is provided with a first inclined plane, the central line of the high-speed shaft bearing seat is located on the first inclined plane, the second box is provided with a second inclined plane matched with the first inclined plane, and the first inclined plane and the second inclined plane are attached to enable the first box to be buckled with the second box.

Optionally, a connecting portion is annularly arranged on the second box body along the circumferential direction of the second inclined plane, and the connecting portion is used for being connected with the first box body.

Optionally, an installation part is arranged at one end of the first inclined plane on the first box body and used for being connected with the second box body.

Optionally, a first threaded hole is formed in the connecting portion, a second threaded hole aligned with the first threaded hole is formed in the first box, and a connecting piece is screwed with the first threaded hole and the second threaded hole respectively, so that the first box is connected with the second box.

Optionally, a first positioning hole is formed in the connecting portion, a second positioning hole aligned with the first positioning hole is formed in the first box, and a positioning element is inserted into the first positioning hole and the second positioning hole.

Optionally, a connecting flange is arranged on one side of the first box body; the connecting flange is used for arranging a gear ring.

Optionally, a stiffener is disposed on an inner side surface of the first box to support the low-speed shaft bearing seat.

Optionally, the surfaces of the first box and the second box are both provided with an anti-rust layer.

Optionally, the material of the first tank and the material of the second tank are both cast iron.

The utility model has the advantages that:

the utility model provides a wind power gear box body, through dividing the wind power gear box body into two parts, namely first box and second box, the low-speed shaft bearing frame sets up on the first box, the high-speed shaft bearing frame sets up on the first box partially, partly sets up on the second box, with the original bearing frame central line box-splitting, become only to carry out the box-splitting to the high-speed shaft bearing frame, make the great low-speed shaft bearing frame of bearing load be the integral structure, thereby guarantee the rigidity of low-speed shaft bearing frame after the box-splitting, guaranteed the integrality of whole wind power gear box body simultaneously again, wind power gear box body integral rigidity also obtains the enhancement; because the high-speed shaft bearing seat is far away from the bottom of the wind power gear box body, the risk of oil leakage is reduced.

Drawings

FIG. 1 is a schematic illustration of a prior art wind gearbox housing with a split face;

fig. 2 is an exploded view of the utility model discloses a wind-powered electricity generation gear box body.

In the figure:

1', a first box body; 2', a second box body; 3', a low-speed shaft bearing seat; 4' and a high-speed shaft bearing seat.

1. A first case; 11. a first inclined plane; 12. an installation part; 13. a connecting flange; 14. a low-speed shaft bearing seat; 2. a second case; 21. a second inclined plane; 22. a connecting portion; 3. high-speed axle bearing frame.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In order to guarantee that the wind-powered electricity generation gear box carries out the rigidity that carries great low-speed shaft bearing seat behind the branch case, reduce the oil leak risk simultaneously, as shown in fig. 2, the utility model provides a wind-powered electricity generation gear box. The wind power gear box body comprises a first box body 1, a second box body 2, a low-speed shaft bearing seat 14 and a high-speed shaft bearing seat 3; the second box body 2 is fixedly arranged on the first box body 1, and the first box body 1 and the second box body 2 form a wind power gear box body with a hollow cavity; the low-speed shaft bearing seat 14 is arranged on the first box body 1 and is communicated with the hollow cavity; the high-speed shaft bearing seat 3 is partially arranged on the first box body 1 and partially arranged on the second box body 2; the high-speed shaft bearing housing 3 is configured to: when the second box body 2 and the first box body 1 are buckled to form the wind power gear box body, the high-speed shaft bearing seat 3 forms a complete circle and is communicated with the hollow cavity.

The wind power gearbox body is divided into two parts, namely a first box body 1 and a second box body 2, a low-speed shaft bearing seat 14 is arranged on the first box body 1, a high-speed shaft bearing seat 3 is arranged on the first box body 1, and a high-speed shaft bearing seat is arranged on the second box body 2, so that the original central connecting line of the bearing seats is divided into boxes, and the original central connecting line of the bearing seats is changed into a box division mode for only the high-speed shaft bearing seat 3, so that the low-speed shaft bearing seat 14 with larger bearing load is of an integrated structure, the rigidity of the low-speed shaft bearing seat after the box division is ensured, the integrity of the whole wind power gearbox body is ensured, and the integral rigidity; because the high-speed shaft bearing seat 3 is far away from the bottom of the wind power gear box body, the risk of oil leakage is reduced.

Further, the upper side of the first box body 1 is provided with a first inclined plane 11, the center line of the high-speed shaft bearing seat 3 is located on the first inclined plane 11, a second inclined plane 21 matched with the first inclined plane 11 is arranged on the second box body 2, and the first inclined plane 11 and the second inclined plane 21 are attached to each other, so that the first box body 1 and the second box body 2 are buckled to form the wind power gear box body. Specifically, the first inclined plane 11 penetrates through the high-speed shaft bearing seat 3 to divide the high-speed shaft bearing seat 3 into two parts, and through the arrangement, on one hand, the integrity of the first box body 1 is high, so that the rigidity of the first box body 1 is ensured; on the other hand, through dividing high-speed shaft bearing frame 3 into two parts, can compromise and conveniently dismantle box and parts wherein when overhauing the wind-powered electricity generation gear box.

Further, a connecting portion 22 is annularly arranged on the second case 2 along the circumferential direction of the second inclined surface 21, and the connecting portion 22 is used for connecting with the first case 1. Specifically, one end of the first inclined surface 11 is provided with a mounting portion 12 on the first casing 1, and the mounting portion 12 can be fixedly connected with the connecting portion 22, so that the first casing 1 is connected with the second casing 2. By providing the mounting portion 12, the first inclined surface 11 and the second inclined surface 21 can be easily assembled. In this embodiment, optionally, a plurality of first threaded holes are formed in the connecting portion 22, a second threaded hole aligned with the first threaded hole is formed in each of the first box 1 and the mounting portion 12, and the connecting member is screwed with the first threaded hole and the second threaded hole respectively, so that the first box 1 is connected with the second box 2. Specifically, the connecting piece is a bolt, and the first box 1 and the second box 2 are fixedly connected by adopting the bolt, and meanwhile, the circumference of the connecting part 22 is shortened compared with the prior art, so that the using number of the bolt is reduced, and the economical efficiency is ensured while the maintenance is convenient.

Furthermore, a first positioning hole is formed in the connecting portion 22, a second positioning hole aligned with the first positioning hole is formed in the first box 1, and the positioning element is inserted into the first positioning hole and the second positioning hole. In this embodiment, the positioning member is a positioning pin, and when the first box 1 and the second box 2 are installed by the positioning pin, the relative position between the first box 1 and the second box 2 can be positioned in advance, so that the assembling speed is increased.

Further, a connecting flange 13 is arranged on one side of the first box body 1, which is far away from the low-speed shaft bearing seat 14; the connecting flange 13 is used for providing a gear ring. The connecting flange 13 is arranged to facilitate the matching with other parts of the wind driven generator.

Further, since the low-speed shaft bearing seat 14 bears a large load during the operation of the wind turbine, in order to ensure the normal rotation of the low-speed shaft, optionally, a reinforcing rib is provided on the inner side surface of the first box 1 for supporting the low-speed shaft bearing seat 14. Of course, in other embodiments, the high-speed shaft bearing seat 3 may also be supported, so that the high-speed shaft bearing seat 3 can also have sufficient strength, without being limited too much.

Further, because wind-powered electricity generation gear box is long-term in the comparatively abominable place work of environment, in order to prevent that wind-powered electricity generation gear box body from producing the corrosion, the surface of first box 1 and second box 2 all is provided with the antirust coat. Specifically, the material of the rust-preventive layer is paint. Paint is coated on the surfaces of the first box body 1 and the second box body 2, so that the first box body 1 and the second box body 2 are isolated from the outside air, the first box body 1 and the second box body 2 are protected, and the service life of the first box body 1 and the service life of the second box body 2 are prolonged.

Alternatively, the material of the first tank 1 and the material of the second tank 2 are both cast iron. The cast iron has good casting performance and cutting processing performance, and wear resistance is a preferred material for manufacturing the wind power gear box body.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a wind-powered electricity generation gear box which characterized in that includes:

a first case (1);

the second box body (2) is arranged on the first box body (1), and the first box body (1) and the second box body (2) form a wind power gear box body with a hollow cavity;

the low-speed shaft bearing seat (14) is arranged on the first box body (1) and communicated with the hollow cavity;

the high-speed shaft bearing seat (3) is partially arranged on the first box body (1) and partially arranged on the second box body (2);

the high speed shaft bearing block (3) is configured to: when the second box body (2) and the first box body (1) are buckled to form the wind power gear box body, the high-speed shaft bearing seat (3) forms a complete circle and is communicated with the hollow cavity.

2. A wind power gearbox housing according to claim 1, characterized in that a first inclined plane (11) is arranged on the upper side of the first housing (1), the center line of the high-speed shaft bearing seat (3) is located on the first inclined plane, a second inclined plane (21) matched with the first inclined plane (11) is arranged on the second housing (2), and the first inclined plane (11) and the second inclined plane (21) are attached to each other so that the first housing (1) and the second housing (2) are buckled.

3. A wind power gearbox housing according to claim 2, characterized in that a connecting portion (22) is annularly arranged on the second housing (2) along the circumference of the second inclined surface (21), said connecting portion (22) being used for connecting with the first housing (1).

4. A wind power gearbox housing according to claim 3, characterized in that one end of said first inclined plane (11) is provided with a mounting portion (12) on said first housing (1) for connection with said second housing (2).

5. The wind power gearbox casing according to claim 4, wherein a first threaded hole is formed in the connecting portion (22), a second threaded hole aligned with the first threaded hole is formed in the first casing (1), and a connecting piece is in threaded connection with the first threaded hole and the second threaded hole respectively, so that the first casing (1) is connected with the second casing (2).

6. The wind power gearbox body as recited in claim 4, wherein a first positioning hole is formed in the connecting portion (22), a second positioning hole aligned with the first positioning hole is formed in the first box body (1), and a positioning member is inserted into the first positioning hole and the second positioning hole.

7. A wind power gearbox housing according to claim 1, characterized in that a connecting flange (13) is provided at one side of the first housing (1); the connecting flange (13) is used for arranging a gear ring.

8. A wind power gearbox housing according to claim 1, characterized in that the inner side of the first housing (1) is provided with a stiffener for supporting the low speed shaft bearing support (14).

9. A wind power gearbox housing according to claim 1, characterized in that the surfaces of said first housing (1) and said second housing (2) are provided with a rust-proof layer.

10. A wind power gearbox housing according to any of claims 1 to 9, characterised in that the material of the first housing (1) and the material of the second housing (2) are both cast iron.