CN218816745U - Yaw device and wind turbine - Google Patents

Abstract

The utility model relates to a yaw device and wind generating set, yaw device include shafting subassembly and adjusting part, and the shafting subassembly includes dead axle, moving axis and the slide bearing that is located between dead axle and the moving axis of coaxial setting, and slide bearing includes a plurality of bearing bushes along the circumference interval distribution of dead axle, and dead axle and moving axis pass through slide bearing normal running fit, and the dead axle is used for being connected with a tower section of thick bamboo, and the moving axis is used for being connected with the frame. The adjusting assembly is arranged on one of the moving shaft and the fixed shaft and connected with the bearing bush, and at least part of the adjusting assembly can move along the radial direction of the shafting assembly so as to adjust the distance between the bearing bush and any one of the moving shaft and the fixed shaft in the radial direction of the shafting assembly. The yawing device provided by the embodiment of the application can reduce the influence of the deformation of the fixed shaft or the fixed shaft under load on the bearing capacity, and improve the maximum bearing capacity of the yawing device.

Description

Yaw device and wind turbine

technical field

The present application relates to the technical field of wind power, in particular to a yaw device and a wind power generating set.

Background technique

A wind turbine is a device that converts wind energy into electrical energy. The yaw device is one of the more important key components of a wind turbine. The yaw device can adjust the machine base at any time according to the wind direction, so that the impeller on the machine base is aligned with the wind direction. Ensure that the impeller is always in the windward state to improve power generation efficiency.

As the power of the wind turbine and the diameter of the impeller continue to increase, the center of gravity of the nose also increases, the load on the transmission chain and supporting structure is also increasing, and the bending moment load on the yaw device is also increasing. As a result, under the action of wind thrust, the yaw device or the machine base and tower that cooperate with the yaw device may be deformed, thereby affecting the bearing capacity of the yaw device.

Utility model content

Embodiments of the present application provide a yaw device and a wind power generating set, which can reduce the influence of fixed axis or fixed axis deformation under load on the carrying capacity, and improve the maximum carrying capacity of the yaw device.

On the one hand, according to the embodiment of the present application, a yaw device is provided, which is installed between the tower and the machine base. The yaw device includes: a shaft assembly, including a coaxial fixed shaft, a dynamic The sliding bearing between the moving shafts, the sliding bearing includes a plurality of bearing pads distributed along the circumferential direction of the fixed shaft, the fixed shaft and the moving shaft rotate through the sliding bearing, the fixed shaft is used to connect with the tower, and the moving shaft is used to connect with the machine The seat is connected; the adjustment assembly is arranged on one of the moving shaft and the fixed shaft and is connected with the bearing pad; the adjustment assembly can at least partially move along the radial direction of the shafting assembly to adjust the position between the bearing pad and the moving shaft and the fixed shaft The radial distance of the shaft assembly.

According to an aspect of the embodiment of the present application, the adjustment assembly includes a support and an adjustment member disposed on the support, the support is connected to one of the fixed shaft and the moving shaft, the adjustment member is connected to the bearing bush and at least partially can be moved along the shaft Radial movement of system components.

According to an aspect of the embodiment of the present application, the adjusting member includes a connecting part and an elastic part, a connecting hole for connecting the connecting part is opened on the support, and the connecting part is connected with the bearing bush through the elastic part.

According to an aspect of the embodiment of the present application, there are multiple sets of adjusting assemblies, and multiple sets of adjusting assemblies are provided in one-to-one correspondence with a plurality of bearing bushes.

According to an aspect of the embodiment of the present application, the moving shaft includes a connecting section and a flange, the connecting section is socketed with the fixed shaft, and the flange is extended from the connecting section to a side away from the fixed shaft; the yaw device also includes a yaw tooth The yaw ring gear is stacked with the fixed shaft in the axial direction and is connected to each other. The yaw ring gear is provided with a tooth part along the radial side of the shaft assembly, and the drive part is arranged on the flange. The output end meshes with the teeth.

According to an aspect of the embodiment of the present application, the moving shaft sleeve is set on the outer circumference of the fixed shaft, and the teeth are set on the outer ring of the yaw ring gear; or, the fixed shaft is sleeved on the outer circumference of the moving shaft, and the teeth are set on the yaw gear The inner circle of the circle.

According to an aspect of the embodiment of the present application, the yaw ring gear includes a first protrusion protruding from the fixed shaft along the radial direction of the shaft assembly; the yaw device also includes a support assembly connected to the flange, and the flange and The support assembly is arranged on opposite sides of the first protruding part along the axial direction.

According to an aspect of the embodiment of the present application, the yaw device further includes a first sliding pad and a second sliding pad, and the first sliding pad and the second sliding pad are respectively mounted on opposite sides of the flange and the support assembly in the axial direction. surface and is in sliding contact with the first protrusion.

According to an aspect of the embodiment of the present application, in the radial direction of the shafting assembly, the support assembly is at least partially in contact with the yaw ring gear and/or the tower; the yaw device further includes a third sliding pad, the third sliding pad It is installed on the side surface of the support assembly facing the tower, and is in sliding contact with the yaw ring gear and/or the tower.

In another aspect, an embodiment of the present application provides a wind power generating set, including a tower, a frame, and a yaw device connected between the tower and the frame, where the yaw device is the yaw device in the above-mentioned embodiments.

The yaw device provided by the embodiment of the present application includes a shafting assembly and an adjustment assembly. The shafting assembly includes a coaxially arranged fixed shaft, a moving shaft, and a sliding bearing between the fixed shaft and the moving shaft. The fixed shaft is used to communicate with the The tower is connected, and the moving shaft is used to connect with the machine base. By rotating the moving shaft relative to the fixed axis, the machine base can be driven to rotate relative to the tower to achieve yaw. Wherein, the sliding bearing includes a plurality of bearing pads distributed at intervals along the circumferential direction of the fixed shaft. The distance between them in the radial direction of the shafting assembly. That is to say, by dividing the sliding bearing into multiple bearing pads, and adjusting the assembly to cooperate with each bearing pad, on the one hand, it can solve the problem that the diameter of the existing yaw bearing cannot be continuously increased, so as to achieve a larger diameter under the limitation of the existing processing capacity. The load bearing of the bending moment, on the other hand, can also ensure that when the fixed shaft or the fixed shaft is loaded and deformed, the bearing pad can also abut against the surface of the other of the fixed shaft and the moving shaft under the action of the adjustment assembly, thereby reducing the The influence of load deformation on the bearing capacity further improves the maximum bearing capacity of the yaw device.

Description of drawings

The features, advantages, and technical effects of the exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

Fig. 1 is a cross-sectional view of a local area of a wind power generating set according to an embodiment of the present application;

Fig. 2 is a partial sectional view of a yaw device according to an embodiment of the present application;

Fig. 3 is a partial sectional view of a yaw device according to another embodiment of the present application.

in:

100-yaw device; 200-tower; 300-base;

1-shaft assembly; 11-fixed shaft; 12-moving shaft; 121-connecting section; 122-flange; 13-bearing bush; 2-adjusting assembly; 21-support; 222-elastic part; 3-yaw ring gear; 31-first protrusion; 4-driver; 5-support assembly; 51-upper caliper; 52-lower caliper; 6-first sliding pad; 7- The second sliding pad; 8-the third sliding pad;

X-radial; Y-axial.

In the figures, the same parts are given the same reference numerals. The figures are not drawn to scale.

Detailed ways

Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application. In the drawings and the following description, at least some well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may have been exaggerated. Furthermore, the features, structures, or characteristics described hereinafter may be combined in any suitable manner in one or more embodiments.

The orientation words appearing in the following description are the directions shown in the figure, and are not intended to limit the yaw device and the wind power generating set of the present application. In the description of this application, it should also be noted that unless otherwise specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or Connected integrally; either directly or indirectly. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In order to better understand the present application, the yaw device and the wind power generating set in the embodiment of the present application will be described in detail below with reference to FIGS. 1 to 3 .

Please refer to FIG. 1 , an embodiment of the present application provides a wind power generating set, including a tower 200 , a base 300 and a yaw device 100 connected between the tower 200 and the base 300 . The yaw device 100 can drive the machine base 300 to rotate relative to the tower tube 200, thereby adjusting the angle of the machine base 300 relative to the tower tube 200 at any time according to the wind direction, so as to ensure that the impeller on the machine base 300 is always aligned with the wind direction to make full use of wind energy. Improve power generation efficiency.

As the power of the wind turbine and the diameter of the impeller continue to increase, the center of gravity of the nose also increases, and the load on its drive chain and supporting structure is also increasing. Taking the yaw device 100 as an example, the bending moment it bears The load is also increasing. The existing yaw device 100 adopts a sliding bearing structure in order to cope with the ever-increasing bending moment load. Compared with rolling bearings, under the same cost conditions, its bending moment bearing capacity is higher. However, the applicant found through research that under the trend of increasing load, the diameter of the sliding bearing is difficult to increase continuously due to the limitation of existing processing technology, processing technology capability and cost, and the limitation of land transportation width will also restrict The outer diameter of the sliding bearing, resulting in no further increase in the moment carrying capacity.

In order to solve the contradiction between the bearing bending moment of the yaw device 100 of a large wind power generating set and the boundary of the bearing processing capacity, please refer to Fig. 2 and Fig. 3, the embodiment of the present application also provides a yaw device 100, which is installed on the tower 200 Between the yaw device 100 and the base 300, the yaw device 100 includes a shaft assembly 1 and an adjustment assembly 2. The shaft assembly 1 includes a coaxially arranged fixed shaft 11, a moving shaft 12, and a slide between the fixed shaft 11 and the moving shaft 12. The bearing, the sliding bearing includes a plurality of bearing bushes 13 distributed along the circumferential direction of the fixed shaft 11, the fixed shaft 11 and the moving shaft 12 are rotated and matched through the sliding bearing, the fixed shaft 11 is used for connecting with the tower 200, and the moving shaft 12 is used for connecting with the tower tube 200 Base 300 connections. The adjustment assembly 2 is arranged on one of the moving shaft 12 and the fixed shaft 11 and is connected with the bearing bush 13. The adjustment assembly 2 can at least partially move along the radial direction X of the shaft assembly 1 to adjust the bearing bush 13 and the moving shaft 12 and the fixed shaft. The distance between any of 11 in the radial direction X of the shafting assembly 1 .

The yaw device 100 provided by the embodiment of the present application includes a shaft assembly 1 and an adjustment assembly 2. The shaft assembly 1 includes a coaxially arranged fixed shaft 11, a moving shaft 12, and a shaft between the fixed shaft 11 and the moving shaft 12. Sliding bearings, the fixed shaft 11 is used to connect with the tower 200, and the moving shaft 12 is used to connect with the machine base 300. By rotating the moving shaft 12 relative to the fixed shaft 11, the machine base 300 can be driven to rotate relative to the tower 200 to achieve eccentricity. sail. Wherein, the sliding bearing includes a plurality of bearing bushes 13 distributed at intervals along the circumferential direction of the fixed shaft 11, the adjustment assembly 2 is arranged on one of the fixed shaft 11 and the moving shaft 12 and connected with the bearing bushes 13, and the adjustment assembly 2 can adjust the bearing bushes 13 The distance in the radial direction X from any one of the moving shaft 12 and the fixed shaft 11. That is, by dividing the sliding bearing into a plurality of bearing pads 13, and adjusting the assembly 2 to cooperate with each bearing pad 13, on the one hand, the problem that the diameter of the existing yaw bearing cannot be continuously increased can be solved, so as to meet the limitation of the existing processing capacity. To realize the load bearing of greater bending moment, on the other hand, it can also ensure that when the fixed shaft 11 or the fixed shaft 11 is loaded and deformed, the bearing bush 13 can also abut against the fixed shaft 11 and the moving shaft 12 under the action of the adjustment assembly 2 The surface of the other can reduce the influence of deformation under load on the bearing capacity, and further improve the maximum bearing capacity of the yaw device 100 .

It can be understood that the adjustment assembly 2 can be arranged on the fixed shaft 11 and connected with the bearing bush 13, so that the bearing bush 13 abuts on the side surface of the moving shaft 12 facing the fixed shaft 11 along the radial direction X of the shaft assembly 1, The adjustment assembly 2 can be arranged on the moving shaft 12 and connected with the bearing bush 13, so that the bearing bush 13 abuts against the side surface of the fixed shaft 11 facing the moving shaft 12 along the radial direction X of the shafting assembly 1, that is, the adjustment assembly can 2 is combined with the bearing bush 13 to form a bending moment bearing structure between the fixed shaft 11 and the moving shaft 12, and its specific setting position can be adjusted according to the specific size structure and space constraints.

For the convenience of description, the adjustment assembly 2 is fixed on the fixed shaft 11 , and the bearing bush 13 is abutted against the moving shaft 12 as an example for illustration below.

Please refer to FIG. 1 and FIG. 2 , in order to enable the adjustment assembly 2 to at least partially move along the radial direction X of the shafting assembly 1 , in some optional embodiments, the adjustment assembly 2 includes a support 21 and is arranged on the support 21 The adjusting member 22 on the top, the support 21 is connected with one of the fixed shaft 11 and the moving shaft 12 , the adjusting member 22 is connected with the bearing bush 13 and can at least partially move along the radial direction X of the shafting assembly 1 . Wherein, the support 21 can be installed on the fixed shaft 11 by bolts, and by moving the adjusting member 22 relative to the support 21 along the radial direction X of the shafting assembly 1, the bearing bush 13 connected to it can be driven to abut against the moving shaft 12 toward On one side surface of the fixed shaft 11.

Optionally, the length of the adjusting member 22 is adjustable. For example, the adjusting member 22 can be set as a telescopic rod, that is, the adjusting member 22 has a fixed end and a free end, and the fixed end of the adjusting member 22 is fixed to the fixed shaft 11 through the support 21. Above, the bearing bush 13 is arranged at the free end, and the distance between the bearing bush 13 and the moving shaft 12 is adjusted by moving the free end relative to the fixed end along the radial direction X of the shaft assembly 1 . Alternatively, the adjusting member 22 and the bearing bush 13 can be set as a ball screw structure, and the support 21 can be provided with a threaded hole, and by rotating the adjusting member 22 relative to the threaded hole, the bearing bush 13 on it can be driven along the axis of the shaft assembly 1. Move in a straight line in the radial direction X, thereby adjusting the distance between the bearing bush 13 and the moving shaft 12, so as to ensure that when the shaft assembly 1 is deformed under load, the bearing bush 13 can always abut against the surface of the moving shaft 12, thereby ensuring the bending moment of the yaw bearing Carrying capacity.

In order to facilitate the adjustment of the position of the bearing bush 13 along the radial direction X of the shafting assembly 1, in other optional embodiments, the adjusting member 22 includes a connecting portion 221 and an elastic portion 222, and the support 21 is provided with an opening for connecting the connecting portion. 221 , the connecting portion 221 is connected to the bearing bush 13 through the elastic portion 222 . Wherein, the connecting part 221 can be set as a bolt, that is, by fixing the connecting part 221 to the connecting hole to achieve preloading, and make the elastic part 222 in a state of elastic deformation, so when the shafting assembly 1 is deformed under load, the bearing bush 13 can Under the action of the elastic restoring force of the elastic part 222, it is always in contact with the surface of the moving shaft 12 facing the fixed shaft 11, so there is no need to manually adjust or check the gap between the bearing bush 13 and the moving shaft 12 during the operation of the deflection device. The distance along the radial direction X of the shaft assembly 1 further reduces the cost while ensuring the bending moment bearing capacity of the yaw bearing.

Optionally, the elastic portion 222 is connected to the bearing bush 13 through a lining plate, so as to disperse the force of the elastic portion 222 through the lining plate to avoid damage to the bearing bush 13 .

Please refer to FIG. 1 and FIG. 2 , in some optional embodiments, there are multiple sets of adjustment assemblies 2 , and multiple sets of adjustment assemblies 2 are provided in one-to-one correspondence with a plurality of bearing bushes 13 . Since the bearing bushes 13 are arranged at intervals along the circumferential direction of the shafting assembly 1, each bearing bushing 13 is correspondingly provided with an adjustment assembly 2, so that the distance between each bearing bushing 13 along the radial direction X of the shafting assembly 1 and the moving shaft 12 can be more accurately adjusted. The distance between them can further reduce the influence of the deformation of the shafting assembly 1 on the bending moment bearing capacity and improve the reliability.

Optionally, considering the size of the moving shaft 12 and the fixed shaft 11 along the axial direction Y, more than two sets of sliding bearings can be arranged at intervals along the axial direction Y, and each group of sliding bearings includes a plurality of bearing bushes 13 arranged at intervals along the circumferential direction . Wherein, the bearing bushes 13 on two adjacent sets of sliding bearings can be arranged side by side in the circumferential direction, or can be arranged in a dislocation. The specific arrangement structure and the number of sliding bearings can be adjusted according to the actual situation, which is not specifically limited in this application.

In order to further improve the sliding connection between the bearing bush 13 and the moving shaft 12, in some optional embodiments, the area where the moving shaft 12 is in contact with the bearing bush 13 is set as a grinding area, that is, by contacting the moving shaft 12 with the bearing bush 13 The area is subjected to finishing treatment, so that it is more convenient to realize the sliding contact between the bearing bush 13 and the moving shaft 12 . In addition, lubricating grease can also be applied on the bearing bush 13, thereby effectively reducing the wear of the sliding bearing, prolonging the service life, and can also slow down the vibration and jumping phenomenon caused by friction between the bearing bush 13 and the moving shaft 12, thereby improving the yaw performance. precision.

Please refer to Fig. 1 and Fig. 2, in order to realize the yaw of the wind turbine, in some optional embodiments, the moving shaft 12 includes a connecting section 121 and a flange 122, the connecting section 121 is socketed with the fixed shaft 11, and the turning shaft 12 The side 122 extends from the connecting section 121 to a side away from the fixed shaft 11 . The yaw device 100 also includes a yaw ring gear 3 and a driving member 4. The yaw ring gear 3 is stacked with the fixed shaft 11 along the axial direction Y and is connected to each other. One side is provided with a tooth portion, the driving element 4 is disposed on the flange 122 , and the output end of the driving element 4 is engaged with the tooth portion. Among them, the yaw ring gear 3 can be installed and fixed with the fixed shaft 11 through bolts, and the driving member 4 can be fixed with the flange 122 through bolts, and meshed with the teeth of the yaw ring gear 3. When the wind is windy, the tower 200, the yaw ring gear 3, the fixed shaft 11 and the adjustment assembly 2 arranged on the fixed shaft 11 are fixed, and the machine base 300 and the moving shaft 12 are deflected against the wind under the action of the driving member 4, to absorb more wind energy.

Optionally, the driving member 4 can be set as a motor, and the output end of the motor is set as a pinion. When the wind turbine needs to yaw against the wind, the motor drives the pinion to rotate. Since the yaw ring gear 3 is fixed, that is The pinion rotates relative to the teeth of the yaw ring gear 3 , thereby driving the drive shaft 12 and the base 300 to rotate relative to the tower 200 . The number of driving elements 4 is more than two, and more than two driving elements 4 are arranged at intervals along the circumference of the shaft assembly 1 , so as to apply a uniform and stable yaw driving force to the moving shaft 12 and the frame 300 .

According to whether the driving member 4 is arranged outside or inside the yaw ring gear 3 , the yaw device 100 can be divided into an externally driven yaw device and an internally driven yaw device. In the externally driven yaw device, the moving shaft 12 is set on the outer circumference of the fixed shaft 11, the teeth are set on the outer ring of the yaw ring gear 3, and the driving part 4 is set 5 outside and connected to the outer circumference of the yaw ring gear 3. teeth are meshed. In the inner drive type yaw device, the fixed shaft 11 is sleeved on the outer periphery of the moving shaft 12, the teeth are arranged on the inner ring of the yaw ring gear 3, and the driving member 4 is arranged inside and connected to the teeth on the inner periphery of the yaw bearing. Mesh.

In addition to the positions of the fixed shaft 11 and the moving shaft 12, the position of the driving member 4 and the teeth on the yaw ring gear 3

The setting position of the head, the basic structure of the external drive type yaw device and the internal drive type yaw device can be the same. Therefore, the structure of the externally driven yaw system described below in conjunction with Figure 2 is also applicable

The internally driven yaw device is depicted in Figure 3. In order to make this specification more concise, only the structure of the externally driven yaw system in FIG. 2 is used as an example for description.

Please refer to FIG. 2 , in some optional embodiments, the yaw ring gear 3 includes

The radial direction X protrudes from the first protruding portion 31 provided on the fixed shaft 11 . The yaw device 100 further includes a support assembly 5 connected to the flange 122 , and the flange 122 and the support assembly 5 are disposed opposite to each other on both sides of the first protruding portion 31 along the axis Y. Among them, the support assembly 5 can be connected with the flange 122 by bolts, and by setting the flange 122 and the support assembly 5 on both sides of the yaw ring gear 3 along the axial direction Y, an axial Y load-bearing structure is formed to carry the yaw device. 100 Loads such as gravity along the axis Y.

Specifically, the support assembly 5 includes an upper caliper 51 and a lower caliper 52, bolt holes are provided at the corresponding positions of the upper caliper 51 and the lower caliper 52, and the fastening bolts pass through the lower caliper 52 and the upper caliper 51 in sequence.

Fastened to the flange 122 of the moving shaft 12. Wherein, the upper caliper 51 and the lower caliper 52 are generally formed in an L shape, and are combined with the flange 122 to form a clamping groove, so as to limit the yaw ring gear 3 through the clamping groove, and prevent the shafting assembly 1 and The frame 300 overturns relative to the yaw ring gear 3 .

Referring to Fig. 2, in some optional embodiments, the yaw device 100 further includes a first sliding pad 6 and a second sliding pad 7, and the first sliding pad 6 and the second sliding pad 7 are installed respectively At

The flange 122 and the support assembly 5 are on opposite surfaces along the axial direction Y, and are in sliding contact with the first protruding portion 31 . That is, sliding friction surfaces are formed on both sides of the yaw ring gear 3 along the axial direction Y, thereby ensuring the smooth realization of the yaw process.

Optionally, the first sliding pad 6 and the second sliding pad 7 may also be respectively installed on the two side surfaces of the first protruding portion 31 along the axial direction Y. The number of the first sliding pads 6 and the second sliding pads 7 can be set to more than two, and they are evenly distributed along the circumference of the shaft assembly 1, so that the moving shaft 12 and the support assembly 5 rotate relative to the yaw ring gear 3 During the process, the support balance of the machine base 300 is maintained. Lubricating grease can be applied to the first sliding liner 6 and the second sliding liner 7 , so as to effectively reduce the wear of the liner and reduce the frequency of liner replacement by injecting the lubricating grease.

In some optional embodiments, in the radial direction X of the shaft assembly 1 , the support assembly 5 is at least partially in contact with the yaw ring gear 3 and/or the tower 200 . The yaw device 100 further includes a third sliding pad 8 . The third sliding pad 8 is installed on the side surface of the support assembly 5 facing the tower 200 and is in sliding contact with the yaw ring gear 3 and/or the tower 200 . Wherein, by installing the third sliding liner 8 on the side surface of the support assembly 5 facing the tower 200, the third sliding liner 8 can be used for positioning adjustment when assembling the fixed shaft 11 and the moving shaft 12, while the third The sliding pad 8 can establish a sliding friction relationship with the yaw ring gear 3 and/or the tower 200 to ensure yaw stability.

Optionally, the cross-section of the yaw ring gear 3 along the circumferential direction has a T-shaped structure, that is, the side of the yaw ring gear 3 away from the fixed shaft 11 can protrude to form a second protrusion, and the yaw ring gear 3 can pass through The second protrusion is connected to the tower 200 , and the third sliding pad 8 is in sliding contact with the second protrusion of the yaw ring gear 3 . It can be understood that by disposing the third sliding pad 8 on the outer circumference of the yaw ring gear 3, the yaw device 100 can be assembled separately and then installed on the tower when the fixed shaft 11 and the moving shaft 12 are assembled. 200, thereby simplifying the installation steps of the yaw device 100 and reducing the cost.

While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims (10)

1. A yaw assembly is installed between a tower and a base, and is characterized in that the yaw assembly comprises:

the shafting assembly (1) comprises a fixed shaft (11), a movable shaft (12) and a sliding bearing, wherein the fixed shaft (11), the movable shaft (12) and the sliding bearing are coaxially arranged, the sliding bearing comprises a plurality of bearing bushes (13) distributed at intervals along the circumferential direction of the fixed shaft (11), the fixed shaft (11) and the movable shaft (12) are in running fit through the sliding bearing, the fixed shaft (11) is used for being connected with the tower barrel, and the movable shaft (12) is used for being connected with the base;

the adjusting assembly (2) is arranged on one of the moving shaft (12) and the fixed shaft (11) and is connected with the bearing bush (13); the adjusting assembly (2) is at least partially movable in a radial direction of the shafting assembly (1) to adjust a distance between the bearing shell (13) and any one of the moving shaft (12) and the fixed shaft (11) in the radial direction of the shafting assembly (1).

2. A yawing arrangement according to claim 1, wherein the adjustment assembly (2) comprises a support (21) and an adjustment member (22) arranged on the support (21), the support (21) being coupled to one of the fixed shaft (11) and the movable shaft (12), the adjustment member (22) being coupled to the bearing shell (13) and being at least partially movable in a radial direction of the shafting assembly (1).

3. The yawing device according to claim 2, wherein the adjusting member (22) comprises a connecting portion (221) and an elastic portion (222), the support (21) is provided with a connecting hole for connecting the connecting portion (221), and the connecting portion (221) is connected with the bearing bush (13) through the elastic portion (222).

4. A yawing device according to claim 1, wherein the number of the adjusting assemblies (2) is multiple, and the multiple adjusting assemblies (2) are arranged in one-to-one correspondence with the multiple bearing bushes (13).

5. The yawing device according to claim 1, wherein the moving shaft (12) comprises a connecting section (121) and a flange (122), the connecting section (121) is sleeved with the fixed shaft (11), and the flange (122) extends from the connecting section (121) to a side away from the fixed shaft (11);

the yawing device further comprises a yawing gear ring (3) and a driving piece (4), the yawing gear ring (3) and the fixed shaft (11) are stacked and connected with each other along the axial direction, and a tooth part is arranged on one side of the yawing gear ring (3) along the radial direction of the shafting assembly (1); the driving piece (4) is arranged on the flanging (122), and the output end of the driving piece (4) is meshed with the tooth part.

6. The yawing device according to claim 5, wherein the moving shaft (12) is sleeved on the periphery of the fixed shaft (11), and the teeth are arranged on the outer ring of the yawing ring gear (3);

or the fixed shaft (11) is sleeved on the periphery of the moving shaft (12), and the tooth part is arranged on the inner ring of the yawing gear ring (3).

7. A yawing arrangement according to claim 5, wherein the yaw ring (3) comprises a first protrusion (31) arranged protruding from the fixed shaft (11) in a radial direction of the shafting assembly (1);

the yawing device further comprises a supporting assembly (5) connected with the flanging (122), and the flanging (122) and the supporting assembly (5) are oppositely arranged on two sides of the first protruding part (31) along the axial direction.

8. A yawing device according to claim 7, further comprising a first sliding pad (6) and a second sliding pad (7), the first sliding pad (6) and the second sliding pad (7) being mounted on opposite sides of the flange (122) and the support member (5) in the axial direction, respectively, and being in sliding contact with the first protrusion (31).

9. A yawing arrangement according to claim 7, wherein the support assembly (5) is at least partially interfacing with the yawing ring (3) and/or the tower in a radial direction of the shafting assembly (1);

the yawing device further comprises a third sliding liner (8), wherein the third sliding liner (8) is mounted on one side surface, facing the tower, of the support assembly (5) and is in sliding contact with the yawing ring gear (3) and/or the tower.

10. A wind power plant comprising a tower, a frame, and a yaw assembly coupled between the tower and the frame, the yaw assembly being as claimed in any one of claims 1 to 9.

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