CN218844484U

CN218844484U - Yaw driving system and wind generating set

Info

Publication number: CN218844484U
Application number: CN202320191232.4U
Authority: CN
Inventors: 刘瑞兵
Original assignee: Xinjiang Goldwind Science and Technology Co Ltd
Current assignee: Jinfeng Technology Co ltd; Zhejiang Jinfeng Technology Co ltd
Priority date: 2023-02-03
Filing date: 2023-02-03
Publication date: 2023-04-11
Anticipated expiration: 2033-02-03

Abstract

The yaw driving system comprises a cabin base, a yaw driving assembly and a gear ring, wherein the cabin base comprises a base body and a base flange; the yaw driving assembly is connected to the base flange and comprises a gearbox and an output shaft, a plurality of shaft teeth are arranged on the periphery of the output shaft along the circumferential direction of the output shaft, the gearbox comprises an assembly shell and a variable speed gear train, the assembly shell is fixedly covered above the groove, the variable speed gear train is arranged in an accommodating cavity formed by splicing the assembly shell and the base flange, and the top end of the output shaft is connected to the variable speed gear train, so that the occupied space of the gearbox in the cabin is reduced, and the space utilization rate in the cabin is improved; the gear ring is used for being fixed on the tower, and ring teeth matched with the shaft teeth are arranged on the periphery of the gear ring along the circumferential direction of the gear ring, so that the engine room base can be driven to rotate relative to the gear ring.

Description

Yaw driving system and wind generating set

Technical Field

The disclosure belongs to the technical field of wind power generation, and particularly relates to a yaw driving system and a wind generating set.

Background

Along with the trend that wind generating set model is to upsizing development more and more obvious, unit load is also along with becoming bigger and bigger, needs the quantity of reduction gear more and more, and unit transportation width receives the restriction, has so increased the cost of transportation of unit.

Wind power plants typically include a yaw drive system to enable real-time adjustment of the orientation of the rotor according to actual needs. The technical problem to be solved by those skilled in the art is how to improve the space utilization of the yaw driving system.

SUMMERY OF THE UTILITY MODEL

The main object of this disclosure is to provide a yaw drive system and a wind generating set to improve the space utilization of the yaw drive system.

In view of the above purpose, the present disclosure provides the following technical solutions:

in one aspect of the disclosure, a yaw driving system is provided, which includes a nacelle base, a yaw driving assembly and a gear ring, wherein the nacelle base includes a base body and a base flange, the base flange is fixed at the bottom end of the base body, and a recess is concavely provided on the top surface of the base flange; the yaw driving assembly is connected to the base flange and comprises a gearbox and an output shaft, a plurality of shaft teeth are arranged on the periphery of the output shaft along the circumferential direction of the output shaft, the gearbox comprises an assembly shell and a variable speed gear train, the assembly shell is fixedly covered above the groove, the variable speed gear train is arranged in an accommodating cavity formed by splicing the assembly shell and the base flange, and the top end of the output shaft is connected to the variable speed gear train; the gear ring is used for being fixed on a tower, ring teeth matched with the shaft teeth are arranged on the periphery of the gear ring along the circumferential direction of the gear ring, and the output shaft rotates around the axis of the output shaft and can rotate relative to the gear ring, so that the engine room base can be driven to rotate relative to the gear ring.

An exemplary embodiment of the present disclosure, the yaw drive assembly further includes a driver, the driver is disposed on the assembly housing, and the driver can drive the gear train to rotate so as to drive the output shaft to rotate.

Optionally, the axle tooth set up in the below of base flange, the variable speed train includes planet carrier and planet wheelset, planet wheelset with the transmission of planet carrier meshing makes planet wheelset can drive the planet carrier rotates, the planet carrier cover is located the upper portion of output shaft, in order to drive the output shaft rotates together.

Specifically, the yaw drive assembly further comprises a first lubricating member, and the first lubricating member is sleeved on the outer peripheral wall of the lower portion of the planet carrier, so that the first lubricating member is supported between the planet carrier and the base flange.

Further, planet carrier includes cone and barrel, the bottom mounting of cone is in the top of barrel, the periphery wall of cone is from upwards crescent down, first lubricating member cover is located the periphery side of barrel.

In another exemplary embodiment of the present disclosure, the yaw driving assembly further includes a sealing ring, which is sleeved on an outer circumferential side of the cylinder and disposed below the first lubricant.

Optionally, the yaw driving assembly further includes an output shaft housing, the output shaft housing is fixed below the base flange and covers the outer peripheral side of the output shaft of the shaft section where the shaft teeth are located, and an opening through which the shaft teeth pass is formed in one side of the output shaft housing facing the gear ring.

Specifically, the yaw drive assembly further includes a second lubricating member that is fitted around an outer peripheral side of the output shaft of the shaft section below the shaft tooth, the second lubricating member being supported between the output shaft and the output shaft housing.

Furthermore, the driftage actuating system still includes the clamp of driftage, the clamp of driftage is fixed in the below of base flange and set up in the radial inboard of ring gear, the clamp of driftage be provided with can press from both sides tight the ring gear and with the holding surface of ring gear laminating.

In another aspect of the present disclosure, a wind turbine generator system is provided, which includes a tower and a yaw driving system as described above, wherein the gear ring is fixed to the tower.

The yaw driving system and the wind generating set provided by the disclosure at least have the following beneficial effects: the concave recess that is provided with of top surface of base flange for hold the gear train, reduced the occupation space of gearbox in the cabin, thereby improved cabin interior space utilization. Further, the gearbox includes subassembly casing and gear train, and the fixed lid of subassembly casing closes the top at the recess, and the gear train sets up in the chamber that holds that subassembly casing and base flange pair pieced together formation, and the top and the gear train of output shaft are connected, have reduced yaw drive assembly's part quantity to simplify yaw drive assembly's structure, alleviateed yaw drive assembly's weight.

Drawings

The above and/or other objects and advantages of the present disclosure will become more apparent from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a block diagram of a yaw drive system provided in an exemplary embodiment of the present disclosure.

FIG. 2 is a partial cross-sectional view of the yaw drive system of FIG. 1.

Description of reference numerals:

1. a nacelle base; 2. A ring gear;

3. a yaw drive assembly; 4. A tower;

5. a yaw clamp; 11. A base flange;

12. a base body; 31. A driver;

32. a gearbox; 33. An output shaft;

34. an output shaft housing; 35. A first lubricating member;

36. a second lubricant; 37. A seal ring;

38. an end cap; 321. A planet carrier;

322. a planetary gear set; 323. An assembly housing.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, it should not be understood that the embodiments of the present disclosure are limited to the embodiments set forth herein. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

The utility model provides a wind generating set, wind generating set include pylon 4, set up in the cabin at pylon 4 top, set up impeller and the generator on the cabin, the impeller includes wheel hub and sets up the blade on wheel hub, wheel hub and the rotor fixed connection of generator to the rotation through the impeller drives the generator electricity generation.

In order to be able to adapt to real-time changing wind directions, the wind park may further comprise a yaw drive system to cause the impeller to change with the wind.

Referring to fig. 1 and 2, an exemplary embodiment of the present disclosure provides a yaw drive system including a nacelle base 1, a yaw drive assembly 3, and a ring gear 2, the ring gear 2 being fixed to a tower 4, and an outer periphery of the ring gear 2 being provided with ring teeth along a circumferential direction of the ring gear 2. By way of example, the ring gear 2 is substantially circular to be fixed to the top end of the tower 4, for example, but not limited to, the ring gear 2 may be fixed to the top end of the tower 4 by bolts.

The nacelle base 1 is arranged above the tower 4 so as to be rotatable relative to the tower 4 to accommodate varying wind directions. The nacelle base 1 includes a base body 12 and a base flange 11, and the base flange 11 is fixed to a bottom end of the base body 12.

The yaw drive assembly 3 is connected to the foundation flange 11 to be able to drive the nacelle foundation 1 in rotation relative to the tower 4. The top surface of the base flange 11 is recessed and provided with a groove, the yaw driving assembly 3 comprises a gearbox 32 and an output shaft 33, and the gearbox 32 is arranged at the groove position of the base flange 11. The outer periphery of the output shaft 33 is provided with a plurality of shaft teeth that can be matched with the ring teeth along the circumferential direction of the output shaft 33, and the rotation of the output shaft 33 can drive the nacelle base 1 to rotate relative to the ring gear 2.

Specifically, in this embodiment, the output shaft 33 rotates around its axis to drive the base flange 11 to rotate relative to the tower 4, that is, in this process, the output shaft 33 can rotate around its axis and also rotate around the gear ring 2.

The sunken recess that is provided with of top surface of base flange 11, gearbox 32 include subassembly casing 323 and gear train, and the fixed lid of subassembly casing 323 closes the top at the recess, and the gear train sets up in the chamber that holds that subassembly casing 323 and base flange 11 pair piecing together and form, and the top and the gear train of change of output shaft 33 are connected.

In the present embodiment, the top surface of the base flange 11 is recessed and cooperates with the assembly housing 323 to form a receiving cavity for receiving a gear train, that is, the base flange 11 is used as a component of the transmission case 32, so that compared with a conventional transmission case, a transition housing connecting the base flange 11 and the assembly housing 323 is omitted, the number of components is reduced, the structure of the yaw driving assembly 3 is simplified, and the weight of the yaw driving assembly 3 is reduced, for example, but not limited to, about 20% of the weight is reduced, thereby reducing the manufacturing cost.

Further, the top surface of the base flange 11 is recessed for accommodating a gear train, so that the occupied space of the gearbox 32 in the cabin is reduced, and the space utilization rate in the cabin is improved.

Further, in order to drive the output shaft 33 to rotate around its axis, the yaw driving assembly 3 further includes a driver 31, the driver 31 is disposed on the assembly housing 323, and the driver 31 can drive the gear train to rotate so as to drive the output shaft 33 to rotate, that is, the power on the driver 31 can be transmitted to the output shaft 33 through the gear train. In this embodiment, the driver 31 serves as a power source for the yaw drive assembly 3. By way of example, the driver 31 may be secured to the top end of the assembly housing 323, but is not so limited. Alternatively, the driver 31 may be a driving motor, but is not limited thereto.

In the present embodiment, the base flange 11 is positioned above the ring gear 2, and the shaft teeth of the output shaft 33 are provided below the base flange 11 so as to be capable of meshing with the ring teeth of the ring gear 2, but not limited thereto. Further, the output shaft 33 is provided radially outside the ring gear 2, but not limited thereto.

As an example, in order to stably support the output shaft 33 and avoid the output shaft 33 from being accidentally separated from the ring gear 2, the yaw driving assembly 3 of the present embodiment further includes an output shaft housing 34, the output shaft housing 34 is fixed below the base flange 11 and covers the outer periphery of the output shaft 33 of the shaft section where the shaft teeth are located, and an opening through which the shaft teeth pass is provided on a side of the output shaft housing 34 facing the ring gear 2.

For ease of maintenance, the output shaft housing 34 may be attached to the underside of the base flange 11 by fasteners, but is not limited thereto. With continued reference to the drawings, to further improve the safety of the yaw drive assembly 3, the yaw drive assembly 3 further includes an end cover 38, the end cover 38 is fixed on the output shaft housing 34 and disposed below the bottom end of the output shaft 33, and the output shaft 33 is isolated from the outside by the end cover 38.

As an example, in order to drive the nacelle base 1 to rotate uniformly relative to the tower 4, the yaw drive assembly 3 may be provided in a plurality in the present embodiment, and the plurality of yaw drive assemblies 3 are arranged at intervals along the circumferential direction of the ring gear 2. Optionally, a plurality of yaw drive assemblies 3 are arranged uniformly along the circumference of the ring gear 2 to be able to provide a uniform torque to the nacelle base 1.

Further, as an example, the gear train includes a planet carrier 321 and a planet set 322, the planet set 322 is in meshed transmission with the planet carrier 321, so that the planet set 322 can drive the planet carrier 321 to rotate, and the planet carrier 321 is sleeved on the upper portion of the output shaft 33 to drive the output shaft 33 to rotate together.

In this embodiment, the driver 31 transmits power to the planetary gear set 322, can transmit power to the planet carrier 321 by meshing the planetary gear set 322 with the planet carrier 321, and can rotate together with the output shaft 33 through the planet carrier 321, so that the power of the driver 31 is transmitted to the output shaft 33, and the output shaft 33 can rotate around its axis and can simultaneously mesh with the ring gear 2 to rotate relative to the ring gear 2.

For example, the planet carrier 321 is engaged with the upper portion of the output shaft 33, or the planet carrier 321 is fixed to the upper portion of the output shaft 33, for example, but not limited to, the planet carrier 321 is fixed to the upper portion of the output shaft 33 by a welding process or a fastening member, so that the planet carrier 321 and the output shaft 33 do not rotate relatively.

Alternatively, the planetary gear set 322 may include a four-stage planetary gear, and the driving torque of the driver 31 may be amplified by the planetary gear set 322 so as to drive the base flange 11 to rotate, but not limited thereto, and the planetary gear set 322 may also be a five-stage planetary gear set, a six-stage planetary gear set, or the like.

In order to increase the service life of the planet carrier 321, the yaw driving assembly 3 further includes a first lubricant member 35, and the first lubricant member 35 is sleeved on the outer circumferential wall of the lower portion of the planet carrier 321, such that the first lubricant member 35 is supported between the planet carrier 321 and the base flange 11.

Continuing to refer to the drawings, the planet carrier 321 includes a cone and a cylinder, the cone is disposed above the cylinder, the peripheral wall of the cone is gradually increased from bottom to top, the bottom end of the cone is fixed to the top end of the cylinder, and the first lubricant 35 is sleeved on the peripheral side of the cylinder. For example, the first lubricant 35 may be a bearing bush or a bearing.

In the embodiment, the first lubricating member 35 is disposed at the lower portion of the planet carrier 321, so that excessive wear between the planet carrier 321 and the base flange 11 is avoided, and the service life of the planet carrier 321 is prolonged. On the other hand, the smoothness of the rotation of the planet carrier 321 in the groove of the base flange 11 is also improved, so that the reliability of the rotation of the planet carrier 321 is improved, and the reliability of the use of the yaw driving assembly 3 is improved.

Further, the yaw driving assembly 3 further includes a second lubricant 36, the second lubricant 36 is sleeved on the outer periphery of the output shaft 33 of the shaft section below the shaft teeth, and the second lubricant 36 is supported between the output shaft 33 and the output shaft housing 34. By way of example, the second lubrication 36 may be a bushing or a bearing.

In this embodiment, the first lubricating member 35 and the second lubricating member 36 are respectively disposed at two ends of the output shaft 33, so that the overall height of the speed reducer is reduced, for example, but not limited to, the overall height of the speed reducer is reduced by 10%, and therefore the occupied space of the yaw driving assembly 3 in the nacelle is reduced, and the space utilization rate in the nacelle is also improved. Further, since the first lubricating member 35 and the second lubricating member 36 are respectively disposed on both sides of the shaft tooth in the axial direction of the output shaft 33, the shaft tooth meshing unbalance of the output shaft 33 is improved, and the use reliability of the shaft tooth is improved.

In order to improve the sealing performance of the yaw driving assembly, the yaw driving assembly 3 further includes a sealing ring 37, the sealing ring 37 is sleeved on the outer periphery of the cylinder and is disposed below the first lubricating member 35, and the sealing ring 37 is compressed between the planet carrier 321 and the base flange 11.

The installation process of the yaw drive system is roughly: firstly, the output shaft 33 is meshed with the gear ring 2; then the first lubricating piece 35 and the sealing ring 37 are arranged in the groove of the base flange 11; the driver 31 is fixed to the assembly housing 323 and the planetary gear set 322 and the planetary carrier 321 are sequentially installed, and then the whole is installed to the base flange 11 and the fastening connection between the assembly housing 323 and the base flange 11 is completed.

In order to improve the reliability of the yaw drive system, the yaw drive system further includes a yaw clamp 5, the yaw clamp 5 is fixed below the base flange 11 and is disposed radially inside the ring gear 2, and the yaw clamp 5 is provided with a clamping surface that can clamp the ring gear 2 and is attached to the ring gear 2. The yaw clamp 5 can be attached to the gear ring 2, and when the yaw driving assembly 3 does not act, the clamping force provided by the yaw clamp 5 to the gear ring 2 can keep the nacelle base 1 and the tower 4 relatively static, so that the nacelle base 1 is prevented from rotating accidentally. When yaw drive assembly 3 is actuated, the clamping force provided by yaw clamp 5 to ring gear 2 provides damping during yawing of nacelle base 1 to maintain stability during yawing of nacelle base 1.

According to the yaw driving system provided by the disclosure, the groove for accommodating the planet carrier 321 is concavely arranged on the top surface of the base flange 11, and the component shell 323 is directly covered above the groove, so that compared with a traditional speed reducer, a transition shell between the component shell 323 and the base flange 11 is omitted, the structure of the yaw driving system is simplified, the weight of the yaw driving component 3 is reduced, and the manufacturing cost is reduced. Further, the planet carrier 321 is embedded into the groove of the base flange 11, so that the overall height of the yaw driving assembly 3 is reduced, the occupied space of the yaw driving assembly 3 in the cabin is reduced, and the space utilization rate in the cabin is improved.

According to the yaw driving system provided by the disclosure, as the concave grooves for accommodating the planet carriers 321 are formed in the top surface of the base flange 11, the nacelle base 1 is fully utilized, the number of parts and the weight of the speed reducer are reduced, and the weight of the yaw driving system is reduced.

In the description of the present disclosure, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, merely for convenience in describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the present disclosure.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present disclosure, "a plurality" means two or more unless otherwise specified.

In the description of the present disclosure, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, and for example, may be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, or communicatively connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.

The described features, structures, or characteristics of the disclosure may be combined in any suitable manner in one or more embodiments. In the above description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.

Claims

1. A yaw drive system, comprising:

the engine room base (1) comprises a base body (12) and a base flange (11), wherein the base flange (11) is fixed at the bottom end of the base body (12), and a groove is formed in the top surface of the base flange (11) in a concave mode;

the yaw driving assembly (3) is connected to the base flange (11), the yaw driving assembly (3) comprises a gearbox (32) and an output shaft (33), a plurality of shaft teeth are arranged on the periphery of the output shaft (33) along the circumferential direction of the output shaft (33), the gearbox (32) comprises an assembly shell (323) and a gear train, the assembly shell (323) is fixedly covered above the groove, the gear train is arranged in an accommodating cavity formed by splicing the assembly shell (323) and the base flange (11), and the top end of the output shaft (33) is connected to the gear train;

the gear ring (2) is used for being fixed on a tower (4), ring teeth matched with the shaft teeth are arranged on the periphery of the gear ring (2) along the circumferential direction of the gear ring (2), and the output shaft (33) rotates around the axis of the output shaft and can rotate relative to the gear ring (2), so that the engine room base (1) can be driven to rotate relative to the gear ring (2).

2. The yaw drive system of claim 1, characterized in that the yaw drive assembly (3) further comprises a driver (31), the driver (31) being arranged on the assembly housing (323), the driver (31) being capable of driving the gear train in rotation to rotate the output shaft (33).

3. The yaw driving system of claim 1, wherein the shaft teeth are disposed below the base flange (11), the gear train includes a planet carrier (321) and a planet gear set (322), the planet gear set (322) is in meshed transmission with the planet carrier (321) so that the planet gear set (322) can drive the planet carrier (321) to rotate, and the planet carrier (321) is sleeved on an upper portion of the output shaft (33) to drive the output shaft (33) to rotate together.

4. A yaw drive system according to claim 3, characterized in that the yaw drive assembly (3) further comprises a first lubricant (35), which first lubricant (35) is provided on a circumferential wall of a lower part of the planet carrier (321) such that the first lubricant (35) is supported between the planet carrier (321) and the base flange (11).

5. The yaw driving system according to claim 4, wherein the planet carrier (321) includes a cone and a cylinder, an outer circumferential wall of the cone gradually increases from bottom to top, a bottom end of the cone is fixed to a top end of the cylinder, and the first lubricant member (35) is sleeved on an outer circumferential side of the cylinder.

6. The yaw drive system according to claim 5, characterized in that the yaw drive assembly (3) further comprises a sealing ring (37), the sealing ring (37) being fitted around an outer circumferential side of the cylinder and arranged below the first lubricant (35).

7. A yaw drive system according to claim 4, characterized in that the yaw drive assembly (3) further comprises an output shaft housing (34), the output shaft housing (34) being fixed below the base flange (11) and covering the outer circumference of the output shaft (33) of the shaft section where the shaft teeth are located, the output shaft housing (34) being provided with an opening for the shaft teeth to pass through on the side facing the ring gear (2).

8. A yaw drive system according to claim 7, characterized in that the yaw drive assembly (3) further comprises a second lubricant (36), the second lubricant (36) being arranged around the outer circumference of the output shaft (33) of the shaft section below the shaft tooth, the second lubricant (36) being supported between the output shaft (33) and the output shaft housing (34).

9. A yaw drive system according to any of claims 1-8, characterized in that the yaw drive system further comprises a yaw clamp (5), the yaw clamp (5) being fixed below the foundation flange (11) and arranged radially inside the gear ring (2), the yaw clamp (5) being provided with a clamping surface adapted to clamp the gear ring (2) and to abut against the gear ring (2).

10. A wind park according to any of claims 1-9, wherein the wind park comprises a tower (4) and a yaw drive system, the gear ring (2) being fixed to the tower (4).