CN218267190U

CN218267190U - Sun wheel assembly, wind power gear box and wind power equipment

Info

Publication number: CN218267190U
Application number: CN202222489210.4U
Authority: CN
Inventors: 孙黎; 杨怀宇; 白晓龙
Original assignee: Sany Renewable Energy Co Ltd
Current assignee: Sany Renewable Energy Co Ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-01-10
Anticipated expiration: 2032-09-20

Abstract

The utility model relates to a wind power generation equipment technical field especially relates to a sun gear subassembly, wind-powered electricity generation gear box and wind power equipment. The sun wheel component comprises a sun wheel shaft, a transmission shaft and a stop positioning sheet. The transmission shaft is sleeved on the sun wheel shaft, and the transmission shaft and the sun wheel shaft realize coaxial transmission through a spline. The backstop spacer includes interval portion and the backstop portion of being connected with interval portion, and backstop portion is connected with the terminal surface of the one end of transmission shaft, and interval portion is located between sun gear axle and the transmission shaft, and interval portion overcoat in the periphery of sun gear axle, and interval portion and spline end. According to the utility model provides a sun gear assembly not only can promote the assembly stability between backstop spacer and the transmission shaft, prescribes a limit to the ascending motion of sun gear axle radial direction, and the spacer portion has the effect of bearing, supporting to the sun gear axle moreover, and then can prevent effectively that the sun gear axle from radially, axial motion or warping.

Description

Sun wheel assembly, wind power gear box and wind power equipment

Technical Field

The utility model relates to a wind power generation equipment technical field especially relates to a sun gear subassembly, wind-powered electricity generation gear box and wind power equipment.

Background

The wind generating set comprises a wind wheel, a generator, a gear box and the like. Among them, the gear box is an important mechanical component. The rotating speed of the wind wheel is usually very low and can not reach the rotating speed required by the power generation of the generator, the speed increasing effect of the gear pair of the gear box is achieved, and the power generated by the wind wheel under the action of wind power is transmitted to the generator to enable the generator to obtain the corresponding rotating speed.

The double-fed set wind power gear box adopts an NGW planetary gear train, wherein a sun gear is a floating part and has radial and axial motion and deformation. Therefore, how to axially position the sun gear shaft and the transmission shaft is an urgent technical problem to be solved in the field.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sun gear subassembly, wind-powered electricity generation gear box and wind power equipment for solve among the prior art the poor defect of location effect between sun gear axle and the transmission shaft, realize the axial positioning between sun gear axle and the transmission shaft.

The utility model provides a sun gear assembly, include:

a sun gear shaft;

the transmission shaft is sleeved on the sun wheel shaft, and the transmission shaft and the sun wheel shaft realize coaxial transmission through a spline;

the stop positioning piece comprises a spacing part and a stop part connected with the spacing part, the stop part is connected with the end face of one end of the transmission shaft, the spacing part is located between the sun wheel shaft and the transmission shaft, the spacing part is sleeved outside the periphery of the sun wheel shaft, and the spacing part is stopped against the spline.

According to the sun wheel component provided by the utility model, the inside of the transmission shaft is provided with the shaft shoulder, the sun wheel shaft is positioned at the end part of the inside of the transmission shaft to the abutting end,

the stop end is stopped against the shaft shoulder.

According to the sun wheel component provided by the utility model, a first clearance is arranged between the shaft shoulder and the spline,

the abutting end is provided with an oil return channel, one end of the oil return channel is communicated with the first gap, and the other end of the oil return channel is communicated with the outside.

According to the utility model provides a pair of sun gear assembly, oil return channel with the axis of sun gear axle is perpendicular.

According to the utility model provides a pair of sun gear assembly, the terminal surface of ending the end has the hole for hoist, oil return channel's the other end with the hole for hoist intercommunication.

According to the utility model provides a pair of sun gear assembly, the spacer with the second clearance has between the sun gear axle.

According to the utility model provides a pair of sun gear assembly is used for the installation the wind-powered electricity generation gear box of sun gear assembly has the oilhole, the oilhole with the one end intercommunication in second clearance, the other end in second clearance with the spline intercommunication.

According to the utility model provides a sun gear component, backstop spacer is integrated into one piece spare.

The utility model also provides a wind-powered electricity generation gear box, include:

the bottom wall of the box body is parallel to the horizontal plane;

the solar assembly is the solar assembly, and the solar assembly is located in the box body.

According to the utility model provides a wind power gear box, the contained angle between the axis of sun gear axle and the horizontal plane in the sun gear subassembly is 5-7.

The utility model also provides a wind power equipment, include as above wind-powered electricity generation gear box.

According to the utility model provides a sun gear assembly is through setting up the backstop spacer between sun gear axle and transmission shaft to make the backstop portion of backstop spacer and the terminal surface laminating of transmission shaft just be connected, the interval portion of backstop spacer is located between sun gear axle and the transmission shaft. On the one hand, the assembly stability between the stop lug and the transmission shaft can be increased, so that the movement in the radial direction of the sun gear shaft can be limited. On the other hand, the spacing part has the functions of bearing and supporting the sun gear shaft, so that the sun gear shaft can be effectively prevented from moving or deforming in the radial direction and the axial direction.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a sectional view of a partial structure of a wind power gearbox provided by the present invention;

FIG. 2 is a cross-sectional view of a partial structure of a sun gear assembly provided by the present invention;

FIG. 3 is a schematic diagram of a portion of the structure of FIG. 2;

FIG. 4 is a schematic diagram of a portion of the structure of FIG. 3;

FIG. 5 is a schematic view of an end construction of a sun gear shaft;

FIG. 6 is a schematic diagram of a portion of the structure of FIG. 1;

reference numerals:

100. a sun gear assembly;

110. a sun gear shaft; 111. a resisting end; 112. hoisting holes; 113. a spline; 114. an oil return passage;

120. a drive shaft; 121. a shaft shoulder; 122. a first gap;

130. a stop positioning sheet; 131. a spacer section; 132. a stopper portion; 133. a second gap;

141. and an oil hole.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The following describes a sun gear assembly 100, a wind power gear box and a wind power device according to embodiments of the present invention with reference to fig. 1 to 6.

As shown in fig. 2, the sun gear assembly 100 according to an embodiment of the present invention includes a sun gear shaft 110, a transmission shaft 120, and a stopper positioning piece 130. The transmission shaft 120 is externally sleeved on the sun gear shaft 110, and the transmission shaft 120 and the sun gear shaft 110 realize coaxial transmission through the spline 113. For example, a key groove is formed on the transmission shaft 120, a spline 113 is formed on the sun gear shaft 110, and the spline 113 is fitted in the key groove, so that transmission connection between the sun gear shaft 110 and the transmission shaft 120 can be realized; for another example, the transmission shaft 120 is provided with a spline 113, the sun gear shaft 110 is provided with a key groove, and the spline 113 is fitted in the key groove, so that the sun gear shaft 110 and the transmission shaft 120 can be in transmission connection.

As shown in fig. 2 and 3, the stopper positioning plate 130 may include a spacing portion 131 and a stopper portion 132 connected to the spacing portion 131. The stopping portion 132 is connected to an end surface of one end of the transmission shaft 120, the spacing portion 131 is located between the sun gear shaft 110 and the transmission shaft 120, the spacing portion 131 is externally sleeved on the outer periphery of the sun gear shaft 110, and the spacing portion 131 is stopped against the spline 113. It should be noted that the stopping portion 132 is connected to the transmission shaft 120, and the spacing portion 131 is stopped against the spline 113, so that the spacing portion 131 can be used to axially limit the sun gear shaft 110. In some examples, the stop locating tab 130 is an integrally formed piece for ease of machining.

It should be noted that, after the stop positioning plate 130 is cut along the axis of the sun gear shaft 110, the cross section of the stop positioning plate 130 is substantially L-shaped, so that the stopping portion 132 can be used as a flanging structure of the spacing portion 131, and the stopping portion 132 is attached and connected to the end surface of the transmission shaft 120, thereby improving the assembling stability between the stop positioning plate 130 and the transmission shaft 120, and thus limiting the movement of the sun gear shaft 110 in the radial direction. The spacer 131 is located between the sun gear shaft 110 and the transmission shaft 120, so that the spacer 131 has a bearing and supporting function on the sun gear shaft 110, and thus the sun gear shaft 110 can be effectively prevented from moving or deforming in the radial direction and the axial direction.

According to some embodiments of the present invention, referring to fig. 4, the transmission shaft 120 has a shoulder 121 inside, the end of the sun gear shaft 110 inside the transmission shaft 120 is up to the abutting end 111, and the abutting end 111 abuts against the shoulder 121. Referring to fig. 3, one end of the sun gear shaft 110 is limited by the stopper positioning piece 130, and the other end of the sun gear shaft 110 is limited by the shoulder 121, so that there are two limit structures spaced apart in the axial direction of the sun gear shaft 110, whereby a two-way limit structure can be constructed to effectively prevent the sun gear shaft 110 from moving in the axial direction. It should be noted that, the stop positioning piece 130 has a simple structure and is convenient to install, and the shaft shoulder 121 is the self-structure of the transmission shaft 120, so that the limit structure of the sun gear shaft 110 can be effectively simplified, the number of parts is reduced, the assembly process is simplified, and meanwhile, the assembly is also convenient.

Further, referring to fig. 4, a first gap 122 is formed between the shoulder 121 and the spline 113, it should be noted that the first gap 122 may be used for storing lubricating oil, the lubricating oil may flow from an end of the spline 113 far away from the shoulder 121 to the first gap 122, and excess lubricating oil may also be stored in the first gap 122. Thereby, it is ensured that a sufficient amount of lubricating oil is present at the position of the spline 113, and wear of the spline 113 can be effectively reduced.

It should be noted that, after the sun gear assembly 100 is operated for a certain period of time, heat is generated between the components due to friction, and the lubricating oil is in contact with the components for a long time, and also has a high temperature. In order to make the lubricant oil circulate to take away heat generated by friction between the components, in some embodiments, as shown in fig. 5, the abutting end 111 has an oil return passage 114, one end of the oil return passage 114 communicates with the first gap 122, and the other end of the oil return passage 114 communicates with the outside. It should be noted that "outside" is used herein in a broad sense, and others may refer to any space, chamber, etc. other than the oil return passage 114.

Thus, the lubricating oil can flow in the spline 113, the first gap 122 and the oil return passage 114, so that heat can be taken away, and the parts can be prevented from being aged due to high temperature of the collected oil. In addition, the spline 113, the first gap 122, the oil return passage 114, and the like form a flowing lubricating oil, so that the lubricating oil can be renewed, and impurities in the lubricating oil can be prevented from damaging the sun gear shaft 110 or the transmission shaft 120.

To facilitate machining, according to some embodiments of the present invention, referring to fig. 5, the oil return passage 114 is perpendicular to the axis of the sun gear shaft 110. Thus, when the oil return passage 114 is machined, the oil return passage 114 can be formed by machining the oil return passage 114 in the radial direction of the sun gear shaft 110 by a machining tool, so that the machining process can be simplified and the operation can be facilitated.

During the assembly process of the sun wheel assembly 100, the sun wheel shaft 110 will be provided with a hoisting hole 112 for hoisting by a hoisting device. After the hoisting is completed, the hoisting hole 112 is a vacant structure. According to some embodiments of the present invention, referring to fig. 5, the lifting hole 112 is disposed on the end surface of the stopping end 111 of the sun gear shaft 110, and the other end of the oil return channel 114 is communicated with the lifting hole 112. On one hand, the design that the oil return passage 114 is perpendicular to the axis of the sun gear shaft 110 is convenient to realize; on the other hand, the internal space of the hoisting hole 112 can be used for storing lubricating oil.

In order to facilitate the lubrication between the spacer 131 and the sun gear shaft 110, according to some embodiments of the present invention, referring to fig. 6, a second gap 133 is formed between the spacer 131 and the sun gear shaft 110, so that the lubricating oil can flow into the space between the spacer 131 and the sun gear shaft 110 through the second gap 133, and the spacer 131 and the sun gear shaft 110 can be lubricated.

According to some embodiments of the present invention, referring to fig. 6, the wind power gearbox has an oil hole 141, the oil hole 141 is communicated with one end of the second gap 133, and the other end of the second gap 133 is communicated with the spline 113. Thus, the lubricating oil can flow to the second gap 133 through the oil hole 141, and further, the second gap 133 can be supplied with the oil. It should be noted that "communication" in "the oil hole 141 communicates with one end of the second gap 133" may be understood as communication in a broad sense, for example, the oil hole 141 and the second gap 133 may communicate through a pipeline, a passage; for another example, the oil hole 141 is located directly above or obliquely above the second gap 133, and oil droplets are dropped in a dropping manner to the opening of the second gap 133, so that the lubricating oil can flow into the second gap 133.

According to the utility model discloses wind-powered electricity generation gear box, including the box and as above sun gear subassembly 100.

Specifically, the bottom wall of the housing is parallel to the horizontal plane, and the sun gear assembly 100 is located within the housing. The case may be used to protect the sun gear assembly 100.

According to the utility model discloses wind-powered electricity generation gear box is through setting up backstop spacer 130 between sun gear axle 110 and transmission shaft 120 to make backstop spacer 130's backstop portion 132 and transmission shaft 120's terminal surface laminating and be connected, backstop spacer 130's interval 131 is located between sun gear axle 110 and the transmission shaft 120. On one hand, the assembling stability between the stopper spacer 130 and the driving shaft 120 can be improved, which can limit the movement of the sun gear shaft 110 in the radial direction. On the other hand, the spacer 131 has a bearing and supporting function on the sun gear shaft 110, so that the sun gear shaft 110 can be effectively prevented from moving or deforming in the radial direction and the axial direction.

According to some embodiments of the present invention, the angle between the axis of the sun gear shaft 110 and the horizontal plane in the sun gear assembly 100 is 5 ° to 7 °. For example, the axis of the sun gear shaft 110 may be angled at 5 ° or 6 ° from horizontal. It should be noted that the axis of the sun gear shaft 110 has a certain inclination angle with respect to the horizontal plane, so that the lubricant can flow along the sun gear shaft 110, thereby improving the fluidity of the lubricant, and facilitating the lubrication of the kinematic pair between the sun gear shaft 110 and the transmission shaft 120.

According to the utility model discloses wind power equipment, include as above wind-powered electricity generation gear box. The wind power plant is a plant that converts kinetic energy of wind into electrical energy. The wind power plant includes blades and a wind power gearbox. The wind drives the blades to rotate, the blades drive the gear structure inside the wind power gear box to rotate, and the wind power gear box can output the rotating speed of the blades according to a preset rotating speed.

According to the utility model discloses wind power equipment through set up backstop spacer 130 between sun gear axle 110 and transmission shaft 120 to make backstop spacer 130's backstop 132 and transmission shaft 120's terminal surface laminating and be connected, the interval 131 of backstop spacer 130 is located between sun gear axle 110 and transmission shaft 120. On one hand, the assembling stability between the stopper spacer 130 and the driving shaft 120 can be improved, which can limit the movement of the sun gear shaft 110 in the radial direction. On the other hand, the spacer 131 has a bearing and supporting function on the sun gear shaft 110, so that the sun gear shaft 110 can be effectively prevented from moving or deforming in the radial direction and the axial direction.

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 it; 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 technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A sun assembly, comprising:

a sun gear shaft;

2. The sun assembly of claim 1, wherein the drive shaft has a shoulder on an interior portion thereof, the sun shaft terminating at an end portion of the drive shaft interior portion,

the stop end is stopped against the shaft shoulder.

3. The sun assembly of claim 2 wherein the shoulder and the spline have a first gap therebetween,

4. The sun assembly of claim 3 wherein the oil return passage is perpendicular to the axis of the sun shaft.

5. The sun assembly according to claim 3, wherein the end face of the abutting end is provided with a hoisting hole, and the other end of the oil return channel is communicated with the hoisting hole.

6. The sun assembly of claim 1 wherein there is a second gap between the spacer and the sun shaft.

7. The sun assembly of claim 6 wherein the wind power gearbox for mounting the sun assembly has an oil hole in communication with one end of the second gap and the other end of the second gap is in communication with the spline.

8. The sun assembly of claim 1, wherein the stop locating tab is an integrally formed piece.

9. A wind power gearbox, comprising:

the bottom wall of the box body is parallel to the horizontal plane;

a sun assembly according to any one of claims 1-8, the sun assembly being located within the housing.

10. The wind power gearbox of claim 9, wherein the angle between the axis of the sun gear shaft in the sun gear assembly and the horizontal plane is 5 ° -7 °.

11. Wind power installation comprising a wind power gearbox according to claim 9 or 10.