CN210087553U

CN210087553U - Main frame gear box supporting structure of wind generating set

Info

Publication number: CN210087553U
Application number: CN201921075083.5U
Authority: CN
Inventors: 朱万新; 韩佳; 谭术平; 张凯; 张万军
Original assignee: CSIC Haizhuang Windpower Co Ltd
Current assignee: CSIC Haizhuang Windpower Co Ltd
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-02-18
Anticipated expiration: 2029-07-10

Abstract

The utility model provides a wind generating set main frame gear box supporting structure, which comprises a base and a first flange, wherein two supporting plates for installing and supporting a gear box are symmetrically arranged on two side walls of an inner cavity of the base; the supporting plate is provided with a first rib plate and a second rib plate; the first rib plate is arranged on one side, close to the first flange, of the supporting plate and extends towards the bottom of the base, and a first included angle is formed between the first rib plate and the bottom surface of the base; the second rib plate is arranged on one side of the supporting plate, which is far away from the first flange, and extends towards the bottom of the base, and a second included angle is formed between the second rib plate and the bottom surface of the base; the first rib plates, the supporting plate and the second rib plates are arranged integrally to form a flat-topped arch structure. This application designs the flat-topped domes of an organic whole setting with the backup pad, compares the backup pad and adds vertical or slope bearing structure, and the rational homodisperse of domes has the load of level and vertical direction, has reduced the stress concentration of toe department, and the weight control and the technology production of being convenient for when satisfying the intensity requirement.

Description

Main frame gear box supporting structure of wind generating set

Technical Field

The utility model relates to a wind generating set's part, concretely relates to wind generating set main frame gear box bearing structure.

Background

The wind generating set main frame gear box base is used as a bearing component for supporting the gear box, and bears the heavy load transmitted by the impeller besides the gravity of the gear box. Therefore, the base must satisfy rigidity, strength, stability, should satisfy the requirement such as production process feasibility and transportation, assembly, maintenance safety simultaneously.

Stress concentration is located to the gusset toe of the backup pad down in the current main frame gear box base, and the stress level is higher, and for satisfying the intensity design requirement, gusset thickness is thicker usually, is unfavorable for weight control.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a gusset thickness of the backup pad down in the current main frame gear box base is thicker, is unfavorable for weight control's technical problem.

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

a main frame gear box supporting structure of a wind generating set comprises a base for mounting a gear box and a first flange for mounting a main shaft bearing, wherein the first flange is arranged on one side of the base, the base is in an open hollow shape, two supporting plates are symmetrically arranged on two side walls of an inner cavity of the base, and the two supporting plates are used for mounting and supporting the gear box; the supporting plate is provided with a first rib plate and a second rib plate; the first rib plates are arranged on one side, close to the first flange, of the supporting plate and extend towards the bottom of the base, and a first included angle is formed between each first rib plate and the bottom surface of the base; the second rib plates are arranged on one side of the supporting plate, which is far away from the first flange, and extend towards the bottom of the base, and a second included angle is formed between the second rib plates and the bottom surface of the base; the first rib plates, the supporting plate and the second rib plates are arranged integrally to form a flat-topped arch structure.

Optionally, the bottom surface of the supporting plate is further provided with at least one third rib plate, and the third rib plate extends towards the bottom of the base.

Optionally, two second flanges are symmetrically arranged on two sides of the bottom of the base, the second flanges are used for being connected with a yaw motor, a plurality of yaw motor mounting holes and a fourth rib plate are arranged on the second flanges, the yaw motor mounting holes and the fourth rib plate are arranged at intervals, one end of the fourth rib plate is connected with the second flanges, and the other end of the fourth rib plate is connected with the outer side wall of the base.

Optionally, the first included angle is an acute angle, the second included angle is also an acute angle, and the first included angle is different from the second included angle.

Optionally, the first included angle is 75-85 degrees, and the second included angle is 55-65 degrees.

Optionally, a platform is arranged on the top surface of the supporting plate, and the surface of the platform is perpendicular to the end surface of the flange.

Optionally, a plurality of threaded holes are formed in the platform and used for fastening the gear box.

The utility model has the advantages that:

the utility model provides a wind generating set main frame gear box supporting structure, which comprises a base and a first flange, wherein two supporting plates are symmetrically arranged on two side walls of an inner cavity of the base and are used for installing and supporting a gear box; the supporting plate is provided with a first rib plate and a second rib plate; the first rib plate is arranged on one side, close to the first flange, of the supporting plate and extends towards the bottom of the base, and a first included angle is formed between the first rib plate and the bottom surface of the base; the second rib plate is arranged on one side of the supporting plate, which is far away from the first flange, and extends towards the bottom of the base, and a second included angle is formed between the second rib plate and the bottom surface of the base; the first rib plates, the supporting plate and the second rib plates are arranged integrally to form a flat-topped arch structure. This application, through the flat-top domes with the backup pad design as an organic whole setting, compare the backup pad and add vertical or slope bearing structure, the reasonable homodisperse of domes has the load of level and vertical direction to make the effort of the reasonable even transmission gear box of bearing structure, reduced the stress concentration of bearing structure toe department, be convenient for weight control and technology production when satisfying intensity design requirement.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic perspective view of a wind turbine generator system mainframe gear box support structure;

FIG. 2 is a cross-sectional view of a wind turbine generator system mainframe gear box support structure;

reference numerals:

1-a base, 2-a first flange, 3-a support plate and 4-a second flange;

31-a first rib plate, 32-a second rib plate, 33-a third rib plate, 34-a platform, 41-a yaw motor mounting hole and 42-a fourth rib plate.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

In the description of the present application, it is to be understood that the terms "bottom surface", "top surface", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

Referring to fig. 1-2, the utility model provides a main frame gear box supporting structure of wind generating set, including the base 1 that is used for installing the gear box and the first flange 2 that is used for installing main shaft bearing, first flange 2 sets up one side of base 1, base 1 is open hollow form, its characterized in that: two supporting plates 3 are symmetrically arranged on two side walls of the inner cavity of the base 1, and the two supporting plates 3 are used for installing and supporting the gear box; a first rib plate 31 and a second rib plate 32 are arranged on the supporting plate 3; the first rib plate 31 is arranged on one side of the supporting plate 3 close to the first flange 2 and extends towards the bottom of the base 1, and a first included angle is formed between the first rib plate 31 and the bottom surface of the base 1; the second rib plates 32 are arranged on one side of the supporting plate 3 far away from the first flange 2 and extend towards the bottom of the base 1, and a second included angle is formed between the second rib plates 32 and the bottom surface of the base 1; the first rib plates 31, the support plate 3 and the second rib plates 32 are integrally arranged and form a flat-topped arch structure. Through the flat-top arch structure who designs the backup pad into an organic whole setting, compare the backup pad and add vertical or slope bearing structure, the reasonable homodisperse of arch structure has the load of level and vertical direction to make the effort of the reasonable even transmission gear box of bearing structure, reduced the stress concentration of bearing structure toe department, be convenient for weight control and technology production when satisfying intensity design requirement.

As a further improvement to the above solution, referring to fig. 2, at least one third rib plate 33 is further disposed on the bottom surface of the supporting plate 3, and the third rib plate 33 extends toward the bottom of the base 1. The third rib 33 enhances the structural strength of the support plate 3.

As a further improvement of the above scheme, two second flanges 4 are symmetrically arranged on two sides of the bottom of the base 1, the second flanges 4 are used for being connected with a yaw motor, a plurality of yaw motor mounting holes 41 and fourth rib plates 42 are arranged on the second flanges 4, the yaw motor mounting holes 41 and the fourth rib plates 42 are arranged at intervals, one end of each fourth rib plate 42 is connected with the second flange 4, and the other end of each fourth rib plate 42 is connected with the outer side wall of the base 1. The first rib plate 31, the second rib plate 32 and the third rib plate 33 are arranged on the inner wall of the base 1, the fourth rib plate 42 is arranged on the outer wall of the base 1, and the rib plates are arranged inside and outside, so that the strength of the side wall of the base 1 is enhanced.

As a further improvement to the above-mentioned scheme, the first included angle is an acute angle, the second included angle is also an acute angle, and the first included angle is different from the second included angle. Specifically, the first included angle is 75-85 degrees, and the second included angle is 55-65 degrees. Namely, the first rib plate 31 extends obliquely towards the bottom of the base 1 and inclines towards the direction close to the first flange 2; the second rib 32 extends obliquely towards the bottom of the base 1 and is inclined towards the direction away from the first flange 2.

As a further improvement to the above scheme, a platform 34 is disposed on the top surface of the support plate 3, and the surface of the platform 34 is perpendicular to the end surface of the flange, that is, the surface of the platform 34 is parallel to the axial line of the main shaft of the wind turbine generator. Specifically, a plurality of threaded holes are formed in the platform 34 and used for fastening the gear box.

According to the method, the maximum equivalent stress of the arch-shaped supporting structure under the limiting working condition is obtained through calculation and analysis, the stress at the toe of the supporting structure is improved, the equivalent stress of the limiting maximum working condition is 180MPa (the allowable stress of the material is 200 MPa), and the strength requirement is met. The improved gear box supporting structure can reasonably and uniformly transmit the acting force of the gear box, and the toe stress level of the supporting structure is reduced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; 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 or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides a wind generating set main frame gear box bearing structure, is including base (1) that is used for installing the gear box and first flange (2) that are used for installing main shaft bearing, first flange (2) set up one side of base (1), base (1) is open hollow form, its characterized in that: two supporting plates (3) are symmetrically arranged on two side walls of an inner cavity of the base (1), and the two supporting plates (3) are used for mounting and supporting the gear box; a first rib plate (31) and a second rib plate (32) are arranged on the supporting plate (3); the first rib plates (31) are arranged on one side, close to the first flange (2), of the supporting plate (3) and extend towards the bottom of the base (1), and a first included angle is formed between each first rib plate (31) and the bottom surface of the base (1); the second rib plates (32) are arranged on one side, far away from the first flange (2), of the supporting plate (3) and extend towards the bottom of the base (1), and a second included angle is formed between the second rib plates (32) and the bottom surface of the base (1); the first rib plates (31), the support plate (3) and the second rib plates (32) are arranged integrally to form a flat-topped arch structure.

2. A wind turbine generator system mainframe gearbox support structure as claimed in claim 1, wherein: the bottom surface of the supporting plate (3) is also provided with at least one third rib plate (33), and the third rib plate (33) extends towards the bottom of the base (1).

3. A wind turbine generator system mainframe gearbox support structure as claimed in claim 1, wherein: the bottom bilateral symmetry of base (1) is equipped with two second flanges (4), second flange (4) are used for being connected with yaw motor, be equipped with a plurality of yaw motor mounting holes (41) and fourth gusset (42) on second flange (4), yaw motor mounting hole (41) with fourth gusset (42) interval sets up, the one end of fourth gusset (42) with second flange (4) are connected, the other end of fourth gusset (42) with the lateral wall of base (1) is connected.

4. A wind turbine generator system mainframe gearbox support structure as claimed in claim 1, wherein: the first included angle is an acute angle, the second included angle is an acute angle, and the first included angle is different from the second included angle.

5. A wind turbine generator system mainframe gearbox support structure as claimed in claim 4, wherein: the first included angle is 75-85 degrees, and the second included angle is 55-65 degrees.

6. A wind turbine generator set mainframe gearbox support structure according to any of claims 1-5, characterized in that: the top surface of the supporting plate (3) is provided with a platform (34), and the surface of the platform (34) is perpendicular to the end surface of the flange.

7. A wind turbine generator system mainframe gearbox support structure as claimed in claim 6, wherein: the platform (34) is provided with a plurality of threaded holes, and the plurality of threaded holes are used for fastening the gear box.