CN218816771U - Wind power generation transmission device and wind generating set - Google Patents

Abstract

The utility model belongs to the technical field of wind power gear boxes, and discloses a wind power generation transmission device and a wind power generator set, wherein the wind power generator set comprises a generator and a wind power generation transmission device, the wind power generation transmission device comprises a main shaft system and a gear box, the main shaft system comprises a main bearing seat, a main shaft and a main shaft bearing, and two main shaft bearings are arranged between the main bearing seat and the main shaft at intervals; the gear box comprises a box body fixedly connected with the main bearing seat and a planetary gear train in the box body, the planetary gear train comprises a first-stage planetary gear train positioned at the input end of the planetary gear train, and the first-stage planetary gear train comprises a first planet carrier fixedly connected with the main shaft and a plurality of supporting bearings arranged between the first planet carrier and the box body. The supporting strength of the joint of the gear box and the main shaft system is improved, the bearing capacity of the gear box under extreme working conditions is improved, and the running reliability of the wind power generation transmission device and the wind generating set is improved.

Description

Wind power generation transmission device and wind generating set

Technical Field

The utility model relates to a wind-powered electricity generation gear box technical field especially relates to a wind power generation transmission and wind generating set.

Background

In wind generators, the main shaft system and gearbox act as key components for transferring blade input speed and load to the generator, which is a significant weight and cost aspect in wind turbines. Usually, the main shafting and the gear box are designed independently, and the mutual adverse effect of the two after being assembled is difficult to be considered thoroughly.

In the prior art, as disclosed in the earlier patent of CN113266534A, a wind power generation transmission system is provided, in which a main shaft system, a wind power gear box and a generator are integrated, compared with a conventional wind power generation transmission system, a rotating component and a housing are integrated, so that part of structural components are omitted, the cost is reduced, the space can be saved to the greatest extent, and the light-weight design of the wind power generation transmission system is realized. Although the operation of whole wind current power generation transmission system can be guaranteed to above-mentioned structure, nevertheless because the fan actual wind condition is complicated changeable, especially under extreme operating mode, the main shaft system bears the back and warp, on the interface direct transmission to the gear box through main shaft and gear box, because the bearing capacity of gear box is not enough to support deformation under this extreme operating mode, lead to the gear box to rotate and support the casing and appear very big systematic deformation within a definite time, and then born very big adverse effect to the gear box gear, can lead to the early inefficacy of gear box even.

Therefore, it is necessary to design a wind power transmission device and a wind power generator set to solve the technical problem that the gear box is easy to deform along with the deformation of the main shaft system due to insufficient bearing capacity in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wind power generation transmission can improve the support intensity of gear box and main shaft system junction, has improved the bearing capacity of extreme operating mode gear box, promotes the reliability of wind power generation transmission operation.

Another object of the utility model is to provide a wind generating set can improve the support intensity of gear box and main shaft system junction, has improved the bearing capacity of extreme operating mode gear box, promotes the reliability of wind power generation transmission unit operation.

To achieve the purpose, the utility model adopts the following technical proposal:

a wind power transmission comprising:

the main shaft system comprises a main bearing seat and a main shaft, wherein the main shaft penetrates through the main bearing seat, and a main shaft bearing is arranged between the main bearing seat and the main shaft;

the gearbox comprises a box body and a planetary gear system, the box body is fixedly connected to the main bearing seat, the planetary gear system is arranged in the box body, the planetary gear system comprises a first-stage planetary gear system located at the input end of the planetary gear system, the first-stage planetary gear system comprises a first planet carrier, the first planet carrier is fixedly connected to the main shaft, and a plurality of supporting bearings are arranged between the first planet carrier and the box body.

Optionally, the box body is provided with a first oil guide pipeline, the first planet carrier is provided with a second oil guide pipeline, and the first oil guide pipeline is communicated with the gear box lubricating system and the second oil guide pipeline.

Optionally, the support bearing is provided with a plurality of oil passing holes, the plurality of oil passing holes are arranged at intervals along the circumferential direction of the support bearing, and the plurality of oil passing holes are all communicated with the first oil guide pipeline and the second oil guide pipeline.

Optionally, at least two of the support bearings are spaced between the first planet carrier and the casing, at least one oil passage is formed between the at least two support bearings, and the at least one oil passage is communicated with the first oil guide pipeline and the second oil guide pipeline.

Optionally, the support bearing is a sliding bearing, and the support bearing is fixedly arranged on the box body or the first planet carrier; after one of the first planet carrier and the box body is installed with the supporting bearing, the radial clearance between the other one of the first planet carrier and the box body and the supporting bearing is A, the diameter of the working surface of the supporting bearing is D, and A is more than D/10000.

Optionally, the number of the supporting bearings is even, and half of the even number of the supporting bearings is fixed on the box body, and the other half of the even number of the supporting bearings is fixed on the first planet carrier. Optionally, the first-stage planetary gear train further includes an inner gear ring, the inner gear ring is clamped between the box body and the main bearing seat, and the inner gear ring is fixedly disposed on the box body and/or the main bearing seat.

Optionally, the inner gear ring is connected with the box body through a bolt or a fixing pin, and/or the inner gear ring is connected with the main bearing seat through a bolt or a fixing pin.

Alternatively, the first carrier and the main shaft may be connected by a bolt or a fixing pin.

And the wind generating set comprises a generator and the wind generating transmission device, and the output end of the planetary gear train is connected with the generator.

The utility model has the advantages that:

the utility model provides a wind power generation transmission, wind power generation transmission's in this embodiment's main shaft system and the integrated setting of gear box have improved the suitability of main shaft system and gear box, and reduce cost practices thrift the space, realizes wind power generation transmission's lightweight. And through increasing a plurality of support bearings between first planet carrier and box, improved the support intensity of gear box and main shaft system junction, effectively avoid support bearing wearing and tearing under extreme operating mode, improved the bearing capacity of extreme operating mode gear box, and then promote the reliability of wind power generation transmission device operation.

The utility model also provides a wind generating set through adopting above-mentioned wind power generation transmission, has improved the support intensity of gear box and main shaft system junction, has improved the bearing capacity of extreme operating mode gear box, has improved the reliability of wind generating set operation.

Drawings

FIG. 1 is a schematic structural view of a wind power transmission device according to an embodiment of the present invention;

fig. 2 is an enlarged view at a in fig. 1.

In the figure:

10. a spindle system; 11. a main bearing housing; 12. a main shaft; 13. a main shaft bearing;

20. a gear case; 21. a box body; 211. a first oil guide pipeline;

22. a first stage planetary gear train; 221. a first carrier; 2211. a second oil guide pipeline; 222. a support bearing; 223. an inner gear ring;

23. a second stage planetary gear train; 24. and a third stage planetary gear train.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically 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 invention can be understood in specific cases to those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. 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.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides a wind power generation transmission device, which is used for increasing the rotating speed of a fan impeller and transmitting the increased mechanical energy to a generator for power generation.

Specifically, as shown in fig. 1 and 2, the wind power generation transmission device includes a main shaft system 10 and a gear box 20, the main shaft system 10 includes a main bearing seat 11 and a main shaft 12, the main shaft 12 is inserted into the main bearing seat 11, a main shaft bearing 13 is disposed between the main bearing seat 11 and the main shaft 12, and the main bearing seat 11 and the main shaft bearing 13 are used for supporting the main shaft 12 and giving a certain supporting force to the main shaft 12.

Further, the gearbox 20 includes a box 21 and a planetary gear train, the box 21 is fixed to the main shaft bearing 13, the planetary gear train is disposed in the box 21, the planetary gear train includes a first stage planetary gear train 22 at an input end thereof, the first stage planetary gear train 22 includes a first planet carrier 221, the first planet carrier 221 is fixed to the main shaft 12, and a plurality of support bearings 222 are disposed between the first planet carrier 221 and the box 21. The gearbox 20 and the main shaft system 10 can be integrated by fixedly connecting the box body 21 with the main bearing seat 11 and fixedly connecting the first planet carrier 221 with the main shaft 12 respectively, and the first-stage planetary gear train 22 at the input end of the planetary gear train can be supported by the plurality of supporting bearings 222 arranged between the first planet carrier 221 and the box body 21, so that the supporting strength of the joint of the gearbox 20 and the main shaft system 10 is improved, the bearing capacity of the gearbox 20 under extreme working conditions is improved, and the running reliability of the wind power generation transmission device is improved.

Through the structure, the main shaft system 10 and the gear box 20 of the wind power generation transmission device in the embodiment are integrated, so that the adaptability of the main shaft system 10 and the gear box 20 is improved, the cost is reduced, the space is saved, and the light weight of the wind power generation transmission device is realized. In addition, the supporting bearing 222 is additionally arranged between the first planet carrier 221 and the box body 21, so that the supporting strength of the joint of the gearbox 20 and the main shaft system 10 is improved, the abrasion of the supporting bearing 222 under extreme working conditions is effectively avoided, the bearing capacity of the gearbox 20 under extreme working conditions is improved, and the running reliability of the wind power generation transmission device is further improved.

For example, the spindle bearing 13 may be provided in several numbers, and several spindle bearings 13 are arranged at intervals along the axial direction of the spindle 12. In the present embodiment, two main shaft bearings 13 are provided, and the main shaft 12 can be better supported by the two main shaft bearings 13 arranged at intervals.

Alternatively, as shown in fig. 1, the two main shaft bearings 13 are respectively disposed on the outer peripheral surface of the main shaft 12 near one end of the impeller and the outer peripheral surface of the main shaft 12 near one end of the gear box, so as to increase the supporting strength of the joint between the main shaft 12 and the impeller and the joint between the main shaft 12 and the gear box 20.

In the present embodiment, as shown in fig. 1, the planetary gear train further includes a second-stage planetary gear train 23 and a third-stage planetary gear train 24, and the third-stage planetary gear train 24 is connected to a generator and can transmit the power of the impeller to the generator to generate electricity. Each planetary gear train includes a planetary carrier and a planetary gear, and a bearing is provided between each planetary carrier and the case 21, which will not be specifically described herein.

It is understood that the number of the planetary gear trains and the parallel-stage gear trains in the gear box 20 may be adaptively changed according to actual situations, and is not particularly limited herein.

In this embodiment, as shown in fig. 2, the first oil guide passage 211 is formed in the case 21, the second oil guide passage 2211 is formed in the first planet carrier 221, and the first oil guide passage 211 is communicated with the gear box lubricating system and the second oil guide passage 2211, so that lubrication of the planetary gear system can be realized, and the service life of the gear box 20 can be prolonged.

In an optional embodiment, the support bearing 222 defines a plurality of oil passing holes, the plurality of oil passing holes are spaced along a circumferential direction of the support bearing 222, and the plurality of oil passing holes are all communicated with the first oil guiding passage 211 and the second oil guiding passage 2211. The operation can realize the communication between the first oil guide pipeline 211 on the box body 21 and the second oil guide pipeline 2211 on the first planet carrier 221, and further can realize the lubrication of the first-stage planetary gear train 22.

In another alternative embodiment, at least two support bearings 222 are spaced between the first planet carrier 221 and the casing 21, at least one oil passing channel is formed between the at least two support bearings 222, and the at least one oil passing channel is communicated with the first oil guide passage 211 and the second oil guide passage 2211. By doing so, the first oil guide pipeline 211 on the box body 21 and the second oil guide pipeline 2211 on the first planet carrier 221 can be communicated, and therefore the first-stage planetary gear system 22 can be lubricated.

It is understood that the number of the support bearings 222 can be adaptively selected according to actual requirements, and is not particularly limited herein.

Optionally, the supporting bearing 222 is a sliding bearing, and the supporting bearing 222 is fixedly disposed on the box 21 or the first planet carrier 221. The arrangement can satisfy the supporting function of the wind power generation transmission device. Further alternatively, after one of the first planet carrier 221 and the casing 21 is installed with the support bearing 222, the radial clearance between the other and the support bearing 222 is a, the diameter of the working surface of the support bearing 222 is D, and a > D/10000.

The above setting is set based on the current deformation of the main shaft system 10 and the bearing capacity of the support bearing 222, so as to effectively avoid the wear under the extreme working condition, improve the bearing capacity of the gearbox 20 under the extreme working condition, enable the support bearing 222 to cope with the deformation of the existing main shaft system 10, and further improve the reliability of the operation of the wind power generation transmission device.

Specifically, after the supporting bearing 222 and the first carrier 221 are mounted, the gap between the box 21 and the supporting bearing 222 is a first radial clearance, the first radial clearance is A1, the diameter of the working surface of the supporting bearing 222 is D1, and A1 > D1/10000; after the support bearing 222 and the casing 21 are installed, the clearance between the first planet carrier 221 and the support bearing 222 is a second radial clearance, the second radial clearance is A2, at this time, the diameter of the working surface of the support bearing 222 is D2, and A2 > D2/10000.

It is understood that, in the present embodiment, the support bearing 222 is disposed between the outer race of the case 21 and the inner race of the first carrier 221, D1 is an inner diameter of the support bearing 222, and D2 is an outer diameter of the support bearing 222. In other embodiments, the support bearing 222 may be disposed between the outer ring of the first planet carrier 221 and the inner ring of the box 21, where D1 is an outer diameter of the support bearing 222, and D2 is an inner diameter of the support bearing 222, and is not particularly limited herein.

Preferably, an even number of the support bearings 222 are provided, and half of the even number of the support bearings 222 are fixedly arranged on the box body 21, and the other half of the even number of the support bearings 222 are fixedly arranged on the first planet carrier 221, so that the support effect on the wind power generation transmission device is better improved.

In this embodiment, as shown in fig. 1, the first-stage planetary gear train 22 further includes an inner gear ring 223, the inner gear ring 223 is interposed between the protruding box 21 and the main bearing seat 11, and the inner gear ring 223 is fixedly disposed on the box 21 and/or the main bearing seat 11. That is, the inner gear ring 223, the main bearing seat 11 and the box body 21 are all fixedly connected, and the fixed connection modes for realizing the three include the following three types: the first method is to fixedly arrange the inner gear ring 223 on the box body 21 or the main bearing seat 11, and the box body 21 is fixedly connected with the main bearing seat 11; the second is to fix the inner gear ring 223 on one of the box 21 or the main bearing seat 11, and the box 21 and the main bearing seat 11 are fixedly connected; and the third is to fixedly connect the main bearing housing 11 and the box 21 to both sides of the inner gear ring 223, respectively. In this embodiment, any one of the modes may be selected, and the method is not limited herein.

Specifically, the inner gear ring 223 is connected to the case 21 by bolts or fixing pins, and/or the inner gear ring 223 main bearing housing 11 is connected by bolts or fixing pins. Both of the above-mentioned two fixed connection structures can realize the fixed connection of the inner gear ring 223 with the box 21 and/or the main bearing support 11.

Alternatively, the first carrier 221 and the main shaft 12 are connected by bolts or fixing pins. The two ways can realize the fixed connection between the first planet carrier 221 and the main shaft 12.

The embodiment also provides a wind generating set, which comprises a generator and the wind power generation transmission device, wherein the output end of the planetary gear train is connected with the generator. The arrangement can improve the supporting strength of the joint of the gearbox 20 and the main shaft system 10, improve the bearing capacity of the gearbox 20 under extreme working conditions, and improve the operation reliability of the wind power generation transmission device, so that the operation reliability of the wind power generation set is improved.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. Wind power transmission device, characterized by, includes:

the main shaft system (10) comprises a main bearing seat (11) and a main shaft (12), wherein the main shaft (12) penetrates through the main bearing seat (11), and a main shaft bearing (13) is arranged between the main bearing seat (11) and the main shaft (12);

the gearbox (20), the gearbox (20) includes box (21) and planetary gear, box (21) rigid coupling in main bearing seat (11), planetary gear set up in box (21), planetary gear includes first order planetary gear (22) that is located its input, first order planetary gear (22) include first planet carrier (221), first planet carrier (221) rigid coupling in main shaft (12), be equipped with a plurality of support bearing (222) between first planet carrier (221) and box (21).

2. The wind power generation transmission device according to claim 1, wherein the box body (21) is provided with a first oil guide pipeline (211), the first planet carrier (221) is provided with a second oil guide pipeline (2211), and the first oil guide pipeline (211) is communicated with a gear box lubricating system and the second oil guide pipeline (2211).

3. The wind power generation transmission device according to claim 2, wherein the support bearing (222) is provided with a plurality of oil passing holes, the plurality of oil passing holes are arranged at intervals along the circumferential direction of the support bearing (222), and the plurality of oil passing holes are all communicated with the first oil guide pipeline (211) and the second oil guide pipeline (2211).

4. The wind power transmission device according to claim 2, wherein at least two support bearings (222) are arranged between the first planet carrier (221) and the box body (21) at intervals, at least one oil passage is formed between the at least two support bearings (222), and the at least one oil passage is communicated with the first oil guide pipeline (211) and the second oil guide pipeline (2211).

5. Wind power transmission according to claim 1, characterised in that said support bearing (222) is a sliding bearing, said support bearing (222) being fixed to said box (21) or to said first planet carrier (221); after one of the first planet carrier (221) and the box body (21) and the supporting bearing (222) are installed, the radial clearance between the other one of the first planet carrier and the box body and the supporting bearing (222) is A, the diameter of a working surface of the supporting bearing (222) is D, and A is more than D/10000.

6. Wind power transmission device according to claim 5, characterised in that an even number of said support bearings (222) is provided, half of said support bearings (222) being fixed to said casing (21) and the other half being fixed to said first planet carrier (221).

7. The wind power transmission device according to any one of claims 1 to 6, wherein the first stage planetary gear train (22) further comprises an inner gear ring (223), the inner gear ring (223) is sandwiched between the box body (21) and the main bearing seat (11), and the inner gear ring (223) is fixedly arranged on the box body (21) and/or the main bearing seat (11).

8. Wind power transmission according to claim 7, characterised in that the annulus gear (223) is connected with the box (21) by means of bolts or fixing pins and/or the annulus gear (223) is connected with the main bearing housing (11) by means of bolts or fixing pins.

9. Wind power transmission according to any of claims 1-6, characterized in that the first planet carrier (221) and the main shaft (12) are connected by means of bolts or fixing pins.

10. Wind park comprising a generator to which the output of the planetary gear is connected and a wind power transmission according to any of claims 1-9.

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