CN215763166U

CN215763166U - Mounting structure and wind power equipment of yaw motor and gear box

Info

Publication number: CN215763166U
Application number: CN202121384271.3U
Authority: CN
Inventors: 邱模强; 杜树军; 石文静; 贺欢
Original assignee: Nanjing High Speed and Accurate Gear Group Co Ltd
Current assignee: Nanjing High Speed and Accurate Gear Group Co Ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2022-02-08
Anticipated expiration: 2031-06-21

Abstract

The utility model relates to the technical field of wind power generation devices, in particular to a mounting structure of a yaw motor and a gear box and wind power equipment. The mounting structure of the yaw motor and the gear box comprises the yaw motor and the gear box, wherein the yaw motor comprises a shell and a motor shaft protruding out of the shell; the gear box comprises a box body and an input central wheel, and the box body is detachably connected with the shell; the input central wheel is arranged in the box body, and the motor shaft extends into the gear box and is in interference fit or spline connection with the input central wheel. The utility model has compact integral size, simple structure and convenient assembly and disassembly, not only needs few parts, but also improves the reliability and the service life because the parts which are easy to fail do not need to be used, and reduces the maintenance cost.

Description

Mounting structure and wind power equipment of yaw motor and gear box

Technical Field

The utility model relates to the technical field of wind power generation devices, in particular to a mounting structure of a yaw motor and a gear box and wind power equipment.

Background

The yaw drive of the wind turbine is an important component of the wind turbine for adjusting the alignment of the nacelle with the wind direction. Because the operating mode is abominable, the maintenance is inconvenient, and the installation space is narrow and small in addition, the driftage driver all has strict requirements to reliability, weight, overall dimension etc..

In a conventional yaw drive, a mounting structure of a yaw motor and a gear box is shown in fig. 1, and includes a coupling flange 201, a connecting shaft 202, a bearing 203, a circlip 204, and the like, wherein one end of the coupling flange 201 is connected with a housing of the yaw motor 100, and the other end is connected with a box body of the gear box 300; a bearing 203 is arranged in the mounting hole of the coupling flange 201, two ends of the bearing 203 are respectively provided with a circlip 204 to limit the bearing 203, a connecting shaft 202 penetrates through the bearing 203, one end of the connecting shaft 202 is connected with a motor shaft of the yaw motor 100 through a flat key, and the other end of the connecting shaft is connected with a central wheel 301 of an input part of the gear box 300, so that the connection between the yaw motor 100 and the gear box 300 is realized.

However, this mounting structure not only requires a large number of parts and is complicated to mount, but also the bearing 203 and the circlip 204 are prone to failure. Furthermore, this configuration increases the overall size, weight and cost of the yaw drive.

SUMMERY OF THE UTILITY MODEL

One of the purposes of the utility model is to provide an installation structure of a yaw motor and a gear box, which has the advantages of compact overall size, simple structure, convenient assembly and disassembly, less required parts, improved reliability and service life due to no use of easily-failed parts, and reduced maintenance cost.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a yaw motor and gearbox mounting structure, comprising:

the yaw motor comprises a shell and a motor shaft protruding out of the shell;

a gear box including a box body and an input center wheel, the box body being detachably connected with the housing; the input central wheel is arranged in the box body, and the motor shaft extends into the gear box and is in interference fit or spline connection with the input central wheel.

Preferably, the box body is provided with a mounting opening, the housing can be covered on the mounting opening, and the motor shaft penetrates through the mounting opening to be connected with the input central wheel.

Preferably, the shell is provided with at least one mounting through hole in a penetrating manner, the box body is provided with a positioning hole matched with the mounting through hole, and the fastener can penetrate through the mounting through hole and is in threaded connection with the positioning hole.

Preferably, the mounting structure of the yaw motor and the gearbox further comprises a flange, and two sides of the flange are respectively connected with the shell and the box body.

Preferably, the flange and the yaw motor are of an integrally formed structure.

Preferably, the flange is provided with at least one fixing through hole in a penetrating manner, the box body is provided with a positioning hole matched with the fixing through hole, and the fastener can penetrate through the fixing through hole and is in threaded connection with the positioning hole.

Preferably, the flange is of a stepped annular structure, a large-diameter end of the flange is connected with the box body, and a small-diameter end of the flange is connected with the shell.

Preferably, the gearbox further comprises an output gear disposed within the housing and intermeshed with the input sun gear.

Preferably, the gearbox further comprises an intermediate gear which meshes with both the input sun gear and the output gear.

Has the advantages that: the utility model provides an installation structure of a yaw motor and a gear box, which can be directly in interference fit or spline connection with a motor shaft through an input central wheel, thereby greatly reducing the number of parts required by the installation of the yaw motor and the gear box, and in addition, because the motor shaft part extends into the gear box, the whole axial size can be greatly reduced. The mounting structure of the yaw motor and the gear box is compact in overall size, simple in structure and convenient to disassemble and assemble, required parts are few, reliability and service life of the mounting structure are improved due to the fact that parts which are prone to failure do not need to be used, and maintenance cost is reduced.

Another object of the present invention is to provide a wind power plant, which is stable in operation, light in weight, small in size and low in manufacturing cost.

a wind power device comprises the yaw motor and gear box mounting structure.

Has the advantages that: the mounting structure of the yaw motor and the gear box in the wind power equipment has the advantages of compact overall size, simple structure, convenience in dismounting, few required parts, improvement in reliability and service life due to the fact that parts which are prone to failure do not need to be used, and reduction in maintenance cost.

Drawings

FIG. 1 is a schematic structural diagram of a prior art mounting structure of a yaw motor and a gear box;

FIG. 2 is a schematic structural diagram of a mounting structure of a yaw motor and a gearbox according to an embodiment;

fig. 3 is a schematic structural diagram of a mounting structure of a yaw motor and a gear box according to a second embodiment.

Wherein:

100. a yaw motor; 201. a coupling flange; 202. a connecting shaft; 203. a bearing; 204. a circlip; 300. a gear case; 301. a center wheel;

1. a yaw motor; 11. a motor shaft; 12. a flange;

2. a gear case; 21. and inputting the central wheel.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. 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.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

Example one

As shown in fig. 2, the present embodiment provides a mounting structure of a yaw motor and a gear box, which includes a yaw motor 1 and a gear box 2, where the yaw motor 1 includes a housing and a motor shaft 11 protruding from the housing; the gear box 2 comprises a box body and an input central wheel 21, wherein the box body is detachably connected with the shell; the input central wheel 21 is arranged in the box body, and the motor shaft 11 extends into the gear box 2 and is in interference fit or spline connection with the input central wheel 21.

When the yaw motor and gear box mounting structure is used, the yaw motor and gear box mounting structure can be directly in interference fit or spline connection with the motor shaft 11 through the input central wheel 21, so that the number of parts required during mounting of the yaw motor 1 and the gear box 2 is greatly reduced, and in addition, the whole axial size can be greatly reduced as the motor shaft 11 partially extends into the gear box 2. The mounting structure of the yaw motor and the gear box is compact in overall size, simple in structure and convenient to disassemble and assemble, required parts are few, reliability and service life of the mounting structure are improved due to the fact that parts which are prone to failure do not need to be used, and maintenance cost is reduced.

Compared with spline connection, the interference fit between the motor shaft 11 and the input central wheel 21 can greatly reduce the manufacturing cost on the premise that the connection between the motor shaft and the input central wheel is tight.

However, for the purpose of easy assembly and disassembly and easy maintenance, the motor shaft 11 and the input center wheel 21 are connected by a spline, that is, the end of the motor shaft 11 is an external spline, and the matching part of the input center wheel 21 and the motor shaft 11 is an internal spline. In addition, compared with the flat key connection mode, the spline connection mode can further reduce the axial size.

Specifically, the box body is provided with a mounting opening, the shell can be covered on the mounting opening, and the motor shaft 11 penetrates through the mounting opening to be connected with the input central wheel 21. The shape of the mounting opening may be set to be circular, rectangular, oval, etc. according to the requirement, and this embodiment is not particularly limited.

In this embodiment, in order to realize the connection between the casing of the motor and the box body of the gear box 2, at least one installation through hole is arranged on the casing in a penetrating manner, a positioning hole matched with the installation through hole is arranged on the box body, and the fastening piece can penetrate through the installation through hole and is in threaded connection with the positioning hole. Of course, in other embodiments, if the factors such as replacement are not considered, the shell and the box body can be directly welded to ensure the rigidity of the whole body.

Illustratively, the fasteners are screws or bolts.

Illustratively, the mounting through-holes are provided around the end of the housing to maintain the stability of the connection of the housing with the case.

In the present embodiment, the motor shaft 11 is a non-standard member in order to reduce the axial dimension so that the motor shaft 11 is directly connected to the input center wheel 21, but the yaw motor 1 using the motor shaft 11 can be applied to a large number of products, and the connection strength between the input center wheel 21 and the motor shaft 11 can be improved, thereby improving the accuracy of the rotation of the input center wheel 21 with the motor shaft 11.

Further, the gear box 2 further includes an output gear provided in the case and engaged with the input sun gear 21. When the housing of the yaw motor 1 and the housing of the gear box 2 are assembled, the motor shaft 11 passes through the mounting opening of the housing of the gear box 2, and then engages with the output gear through the input center wheel 21 to drive the output gear to rotate.

Wherein the gearbox 2 further comprises an intermediate gear which meshes with both the input central wheel 21 and the output gear. It is to be understood that one or more intermediate gears may be provided to improve the transmission stability of the gear mechanism or to achieve different gear ratios, and the embodiment is not particularly limited.

The embodiment also provides wind power equipment, which comprises the mounting structure of the yaw motor and the gear box, and by utilizing the mounting structure, the size, the weight and the manufacturing cost of the wind power equipment are reduced, the structure inside the wind power equipment is simplified, the working reliability of the wind power equipment is improved, and the possibility of failure is reduced.

Example two

As shown in fig. 3, the present embodiment provides a mounting structure of a yaw motor and a gear box. The difference from the first embodiment is only that the flange 12 is added, and the yaw motor 1 is adaptively modified to better improve the reliability of the mounting structure of the yaw motor and the gear box.

Specifically, when the outer diameter of the end face of the casing connected with the box body is far smaller than the diameter of the inner gear ring of the end face of the box body connected with the casing, namely the fastener penetrates through the mounting through hole and cannot be connected and fastened with the positioning hole in a threaded manner, the mounting structure of the yaw motor and the gear box further comprises a flange 12, and two sides of the flange 12 are respectively connected with the casing and the box body.

The flange 12 and the yaw motor 1 are of an integrally formed structure, namely, the motor flange 12 is directly formed, so that the reliability of the mounting structure of the yaw motor and the gear box is improved, and parts do not need to be added.

Specifically, at least one fixing through hole is arranged on the flange 12 in a penetrating manner, a positioning hole matched with the fixing through hole is arranged on the box body, and the fastener can penetrate through the fixing through hole and is in threaded connection with the positioning hole. It can be understood that, due to the matching of the fixing through holes and the positioning holes, the yaw motor 1 does not need to be provided with mounting through holes.

Illustratively, the fasteners are screws or bolts.

Illustratively, fixing through holes are provided around the ends of the flange 12 to maintain the stability of the connection of the flange 12 to the tank.

In this embodiment, the flange 12 has a stepped annular structure, and the large-diameter end of the flange 12 is connected to the case and the small-diameter end is connected to the case, so as to adapt to the sizes of the case and the case, respectively.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. A mounting structure of yaw motor and gear box characterized in that includes:

the yaw motor (1), the yaw motor (1) comprises a shell and a motor shaft (11) protruding out of the shell;

a gearbox (2), the gearbox (2) comprising a housing and an input centre wheel (21), the housing being detachably connected to the housing; the input central wheel (21) is arranged in the box body, and the motor shaft (11) extends into the gear box (2) and is in interference fit or spline connection with the input central wheel (21).

2. A mounting structure for a yaw motor and a gearbox according to claim 1, wherein the box body is provided with a mounting opening, the housing can be covered on the mounting opening, and the motor shaft (11) passes through the mounting opening and is connected with the input center wheel (21).

3. The mounting structure of a yaw motor and a gear box according to claim 1, wherein the housing has at least one mounting through hole formed therethrough, the box has a positioning hole formed therein for engaging with the mounting through hole, and a fastener is capable of passing through the mounting through hole and being threadedly engaged with the positioning hole.

4. A mounting structure for a yaw motor and a gearbox according to claim 1, characterized in that the mounting structure further comprises a flange (12), and both sides of the flange (12) are connected to the housing and the box body respectively.

5. A mounting structure of a yaw motor and a gearbox according to claim 4, characterized in that the flange (12) and the yaw motor (1) are of an integrated structure.

6. The mounting structure of the yaw motor and the gear box according to claim 4, wherein at least one fixing through hole is formed in the flange (12) in a penetrating manner, a positioning hole matched with the fixing through hole is formed in the box body, and a fastener can penetrate through the fixing through hole and is in threaded connection with the positioning hole.

7. A yaw motor and gearbox mounting structure according to claim 4, characterized in that the flange (12) is a stepped ring structure, the flange (12) having a large diameter end connected to the housing and a small diameter end connected to the housing.

8. A yaw motor and gearbox mounting arrangement according to any one of claims 1 to 7, characterized in that the gearbox (2) further comprises an output gear arranged in the housing and intermeshing with the input sun wheel (21).

9. A yaw motor and gearbox mounting arrangement according to claim 8, characterized in that the gearbox (2) further comprises an intermediate gear that meshes with both the input centre wheel (21) and the output gear.

10. A wind power plant comprising a yaw motor and gearbox mounting arrangement according to any of claims 1-9.