CN218542962U - Sliding bearing assembly and wind generating set - Google Patents

Abstract

The present disclosure provides a sliding bearing assembly and a wind generating set, the sliding bearing assembly comprising a bearing housing and a plurality of bearing units, the bearing housing having a receiving cavity; it is a plurality of the bearing unit is followed the circumference interval that holds the chamber set up in hold in the chamber, the bearing unit includes backup pad and steel backing, the backup pad is fixed in on the bearing frame, the steel backing movably connect in the backup pad, deviating from of steel backing one side of backup pad is provided with the pivot holding surface that is used for supporting the rotation axis, sets up a plurality of bearing units through holding the chamber at the bearing frame, and a plurality of bearing units are independent each other, and the independent dismouting of being convenient for is particularly suitable for dismouting on the tower to sliding bearing assembly's fortune dimension cost has been reduced.

Description

Sliding bearing assembly and wind generating set

Technical Field

The disclosure belongs to the field of wind power generation, and particularly relates to a sliding bearing assembly and a wind generating set.

Background

With the development of the wind power industry, the capacity of the unit is continuously increased, which puts higher requirements on the bearing capacity of the main bearing. At present the main bearing adopts antifriction bearing usually, along with the diameter of main bearing is bigger and bigger, has proposed more rigorous requirement to processing, along with the increase of main bearing diameter, antifriction bearing cost rises sharply moreover.

SUMMERY OF THE UTILITY MODEL

The main purpose of this disclosure is to provide a slide bearing subassembly and wind generating set to reduce wind generating set's operation and maintenance cost.

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

in one aspect of the present disclosure, there is provided a plain bearing assembly including a bearing housing having a receiving cavity and a plurality of bearing units; a plurality of bearing unit follows the circumference interval that holds the chamber set up in hold in the chamber, bearing unit includes backup pad and steel backing, the backup pad is fixed in on the bearing frame, the steel backing movably connect in the backup pad, deviating from of steel backing one side of backup pad is provided with the pivot holding surface that is used for supporting the rotation axis.

The bearing unit further comprises a pin shaft, the pin shaft is parallel to the diameter of the rotating shaft and is connected between the supporting plate and the steel back, the steel back is provided with a steel back mounting hole, and the pin shaft is in clearance fit with the steel back mounting hole.

Optionally, the support plate is provided with a support plate mounting hole through which the pin shaft passes, the support plate mounting hole and the steel back mounting hole are arranged in alignment, the first end of the pin shaft is in interference fit with the support plate mounting hole, and the second end of the pin shaft is in clearance fit with the steel back mounting hole.

Specifically, the bearing unit further comprises an elastic pad which is supported between the support plate and the steel back, and the elastic pad is symmetrically arranged relative to the pin shaft along the circumferential direction of the rotating shaft.

Further, the pin shaft is parallel to the diameter of the rotating shaft, and the pin shaft and the steel back are arranged along the circumferential central line of the rotating shaft in a staggered mode.

According to another exemplary embodiment of the disclosure, the steel backing is provided with an oil inlet channel, one end of the oil inlet channel is communicated with the oil pump through a pipeline, and the other end of the oil inlet channel is communicated with the rotating shaft supporting surface.

Optionally, the bearing units are arranged in pairs, and each pair of the bearing units is arranged in central symmetry.

Specifically, the cavity wall of the containing cavity of the bearing seat is provided with a mounting groove in a recessed mode, and one side, deviating from the steel backing, of the supporting plate is embedded into the mounting groove.

Further, the bearing unit further comprises a fixing plate which is arranged at the axial end part of the supporting plate along the rotating shaft, the fixing plate is fixed on the bearing seat, and the supporting plate is fixed on the fixing plate.

In an exemplary embodiment of the present disclosure, at least one of the spindle support surface and the outer peripheral wall of the rotary shaft is provided with a wear-resistant layer.

In another aspect of the present disclosure, there is provided a wind power plant comprising a plain bearing assembly as described above.

The sliding bearing component and the wind generating set provided by the disclosure at least have the following beneficial effects: this is disclosed through the chamber that holds at the bearing frame sets up a plurality of bearing units, and a plurality of bearing units are independent each other, and the independent dismouting of being convenient for is particularly suitable for dismouting on the tower to sliding bearing assembly's fortune dimension cost has been reduced.

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 plain bearing assembly provided by an exemplary embodiment of the present disclosure.

Figure 2 is a cross-sectional view of the plain bearing assembly of figure 1.

Fig. 3 is a structural view of the bearing unit in fig. 1.

Fig. 4 is a view showing a state where the support plate and the fixing plate are coupled to each other in fig. 3.

Fig. 5 is a cross-sectional view of the bearing unit in fig. 3.

A description of the reference numerals;

1. a bearing seat; 2. A bearing unit;

3. a rotating shaft; 21. A support plate;

22. a steel backing; 23. A pin shaft;

24. an elastic pad; 25. A fixing plate;

26. connecting a pipeline externally; 27. A fastener;

211. a support plate mounting hole; 221. An oil inlet passage.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, it should not be understood that the aspects 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, this wind generating set includes the pylon, supports in the cabin at the pylon top, connects impeller and the generator on the cabin, and wherein, the rotation axis of impeller is connected with the rotation axis of generator, and the impeller will take place to rotate under the effect of wind to drive the generator electricity generation.

In order to improve the service life of the rotating shaft, the wind generating set further comprises a plain bearing assembly, the plain bearing assembly can be adapted to the rotating shaft with a larger size diameter, and the plain bearing assembly is low in manufacturing cost. By way of example, the rotating shaft may be a main shaft of a wind turbine generator set, but is not limited thereto.

Referring to fig. 1 and 2, an exemplary embodiment of the present disclosure provides a sliding bearing assembly including a bearing housing 1 and a plurality of bearing units 2, the bearing housing 1 having a receiving cavity. A plurality of bearing units 2 are disposed in the housing chamber at intervals in the circumferential direction of the housing chamber for support outside the rotating shaft 3 in the circumferential direction.

This is disclosed through holding the chamber at bearing frame 1 and setting up a plurality of bearing unit 2, and a plurality of bearing unit 2 are independent each other, and the independent dismouting of being convenient for is particularly suitable for dismouting on the tower to sliding bearing assembly's fortune dimension cost has been reduced.

Referring to fig. 2 to 5, specifically, the bearing unit 2 includes a support plate 21 and a steel back 22, the support plate 21 is fixed on the bearing seat 1, the steel back 22 is movably connected to the support plate 21, and a rotation shaft support surface for supporting the rotation shaft 3 is disposed on a side of the steel back 22 away from the support plate 21.

In order to increase the service life of the plain bearing assembly, at least one of the bearing surface of the rotary shaft and the outer peripheral wall of the rotary shaft 3 is provided with a wear-resistant layer. As an example, the wear-resistant layer is provided on the rotation shaft supporting surface of the steel back 22, and may be provided on the outer circumferential wall of the rotation shaft 3. Optionally, a wear-resistant layer is bonded or coated on the rotating shaft supporting surface of the steel back 22 and the rotating shaft 3 to improve the wear resistance and reduce the frictional resistance of the sliding bearing assembly.

In this embodiment, the support plate 21 is fixed to the bearing housing 1, so that the steel back 22 can be movably connected to the bearing housing 1 through the support plate 21 to be capable of adapting to an axial acting force, thereby improving the adaptability of the sliding bearing assembly.

The support plate 21 may be attached to the bearing housing 1 by a fastener, by way of example, but not limitation. Referring to fig. 3, the supporting plate 21 is a substantially square plate structure, and 4 corners of the square plate are respectively connected to the bearing seat 1 by fasteners, but not limited thereto.

Further, in order to facilitate the assembly of the support plate 21, the bearing unit 2 further includes a fixing plate 25 disposed at an axial end of the support plate 21 along the rotating shaft 3, the fixing plate 25 is fixed to the bearing housing 1, and the support plate 21 is fixed to the fixing plate 25.

In order to improve the assembly efficiency of the sliding bearing assembly, the cavity wall of the accommodating cavity of the bearing seat 1 is concavely provided with a mounting groove, and one side of the support plate 21 departing from the steel back 22 is embedded into the mounting groove. So set up, make things convenient for backup pad 21 equipment location to improve sliding bearing assembly's packaging efficiency.

With continued reference to fig. 3, as an example, the fixing plate 25 may be fixed on the inner sidewall of the bearing seat 1 by a fastener in advance, the fixing plate 25 may serve as an axial stopper, and the size of the fixing plate 25 in the radial direction of the rotating shaft 3 matches the size of the support plate 21, so as to avoid the fixing plate 25 interfering with the steel back 22. Further, a side of the fixing plate 25 facing the support plate 21 may be provided with a groove matching with an end of the support plate 21 in the axial direction of the rotary shaft 3, and an end of the support plate 21 may be inserted into the groove, so that the support plate 21 is stably coupled to the fixing plate 25, improving the coupling reliability of the support plate 21.

In order to further improve the connection reliability of the support plate 21 and to prevent the support plate 21 from shifting relative to the bearing housing 1 in the axial direction of the rotary shaft 3, the support plate 21 is provided with fasteners 27 on both sides in the circumferential direction of the rotary shaft 3, the fasteners 27 extend substantially in the axial direction of the rotary shaft 3, and the fasteners 27 are connected between the support plate 21 and the fixing plate 25. In order to facilitate the disassembly and assembly, the nut end of the fastener 27 can be exposed to facilitate the operation, and the convenience of disassembly and assembly is improved.

Alternatively, the supporting plate 21 and the fixing plate 25 may be fixedly connected by an adhesive, but not limited thereto.

Specifically, each support plate 21 has a mounting groove corresponding to the mounting groove on the bearing seat 1, and during the assembling process, the fixing plate 25 may be fixed to the bearing seat 1 by two fasteners (such as, but not limited to, screws), the support plate 21 may be pushed into the groove of the fixing plate 25, and the remaining fasteners 27 may be mounted on the support plate 21, so that the support plate 21 is connected to the fixing plate 25 and the bearing seat 1.

With continued reference to fig. 2 to 5, the bearing unit 2 further includes a pin 23, the pin 23 is disposed parallel to the diameter of the rotating shaft 3, the pin 23 is connected between the support plate 21 and the steel back 22, the steel back 22 is provided with a steel back mounting hole aligned with the support plate mounting hole 211, and the pin 23 is in clearance fit with the steel back mounting hole. In this embodiment, the pin 23 is mainly used for connecting the steel back 22 and the support plate 21, and limits the steel back 22 in the circumferential direction of the rotating shaft 3, thereby preventing the steel back 22 from being accidentally separated from the support plate 21.

By way of example, the support plate 21 is provided with a support plate mounting hole 211 for the pin shaft 23 to pass through, and the first end of the pin shaft 23 is in interference fit with the support plate mounting hole 211, so that accidental movement of the pin shaft 23 relative to the support plate 21 is avoided, and the connection reliability between the steel back 22 and the support plate 21 is improved. It is understood that the pin 23 is fixed on the support plate 21, and the steel back 22 can swing around the circumference of the pin 23 relative to the pin 23 and move axially relative to the pin 23 to improve the adaptability of the sliding bearing assembly, but not limited thereto.

Further, the second end of the pin 23 is in clearance fit with the mounting hole of the steel back, so that the steel back 22 can be movably connected relative to the support plate 21. As an example, the steel back mounting hole may be a blind hole, and the end of the second end of the pin 23 is spaced from the bottom of the steel back mounting hole, so that the steel back 22 can move relative to the pin 23 along the axial direction of the pin 23 to adapt to different working conditions. Further, the end of the second end of the pin shaft 23 is spaced from the bottom of the steel back mounting hole, so that when the steel back 22 bears the radial force of the rotating shaft 3, the pin shaft 23 can be prevented from bearing the axial acting force, and the service life of the pin shaft 23 is prolonged.

As an example, the steel backing 22 and the supporting plate 21 are made of metal, respectively, to have high rigidity.

In order to improve the service life of the sliding bearing assembly and avoid wear caused by rigid contact between the steel backing 22 and the support plate 21, the bearing unit 2 further comprises an elastic pad 24, the elastic pad 24 is supported between the support plate 21 and the steel backing 22, and the elastic pad 24 is symmetrically arranged relative to the pin shaft 23 along the circumferential direction of the rotating shaft 3. In this way, by providing the elastic pad 24 between the support plate 21 and the steel back 22, the steel back 22 is kept in contact with the outer peripheral wall of the rotary shaft 3, and the reliability of use of the plain bearing assembly is improved. Further, the elastic pad 24 is compressively deformed so that the rotary shaft 3 has a predetermined stroke space in the radial direction, thereby improving the adaptability of the plain bearing assembly. As an example, the elastic pad 24 may be made of a polymer material, and the provision of the elastic pad 24 improves the sensitivity of the bearing stiffness to the formation of a hydrodynamic oil film of the sliding bearing.

As an example, the pin 23 is parallel to the diameter of the rotating shaft 3 and is arranged offset from the diameter of the rotating shaft 3, that is, the pin 23 is arranged offset from the center line of the steel back 22 in the circumferential direction of the rotating shaft 3. The pin 23 has a certain offset value along the rotation direction of the rotating shaft 3, and the offset value enables the sliding bearing assembly to better form a dynamic pressure oil film. Further, the pin 23 is disposed on a center line of the elastic pad 24 along the circumferential direction of the rotating shaft 3, that is, the elastic pad 24 is disposed non-centrally with respect to the steel backing 22, but not limited thereto.

In order to further improve the use reliability of the sliding bearing assembly and keep the smooth rotation of the rotating shaft 3, the steel backing 22 is provided with an oil inlet channel 221, one end of the oil inlet channel 221 is communicated with the oil pump through the external pipeline 26, and the other end of the oil inlet channel is communicated with the rotating shaft supporting surface. With such an arrangement, a dynamic pressure oil film is easily formed between the rotating shaft supporting surface of the steel backing 22 and the outer peripheral wall of the rotating shaft 3, so that the smoothness of rotation of the rotating shaft 3 is improved, the service lives of the rotating shaft 3 and the sliding bearing assembly are prolonged, and the operation and maintenance cost is reduced.

In the lubricating mode of independent oil supply of each steel backing 22, lubricating oil is injected into an oil channel of the steel backing 22 through the oil inlet channel 221, then flows into a rotating shaft supporting surface which rubs with the rotating shaft 3, and then flows out from the bearing seat 1 under the action of gravity, so that the purpose of circular oil supply is achieved.

As an example, the bearing units 2 are arranged in pairs, and each pair of bearing units 2 is arranged in central symmetry. In this way, the plain bearing assembly can receive the force acting in the radial direction of the rotary shaft 3, and the applicability of the plain bearing assembly is improved.

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 implicitly indicating 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 may be, for example, a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, or a communication connection; 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 a specific case to 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 embodiments of the disclosure may 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 (11)

1. A plain bearing assembly, wherein the plain bearing assembly comprises:

a bearing seat (1) having an accommodating cavity;

a plurality of bearing unit (2), follow the circumference interval that holds the chamber set up in hold in the chamber, bearing unit (2) are including backup pad (21) and steel backing (22), backup pad (21) are fixed in on bearing frame (1), steel backing (22) movably connect in on backup pad (21), deviating from of steel backing (22) one side of backup pad (21) is provided with the pivot holding surface that is used for supporting rotation axis (3).

2. A plain bearing assembly according to claim 1, wherein the bearing unit (2) further comprises a pin (23), the pin (23) being arranged parallel to the diameter of the rotation shaft (3), the pin (23) being connected between the support plate (21) and the steel backing (22), the steel backing (22) being provided with a steel backing mounting hole, the pin (23) being clearance-fitted with the steel backing mounting hole.

3. The plain bearing assembly according to claim 2, characterized in that the support plate (21) is provided with a plate mounting hole (211) for the pin shaft (23) to pass through, the plate mounting hole (211) is arranged in place of the steel backing mounting hole, the first end of the pin shaft (23) is in interference fit with the plate mounting hole (211), and the second end of the pin shaft (23) is in clearance fit with the steel backing mounting hole.

4. A plain bearing assembly according to claim 2, characterized in that the bearing unit (2) further comprises an elastic pad (24) supported between the support plate (21) and the steel backing (22), the elastic pad (24) being arranged symmetrically with respect to the pin shaft (23) in the circumferential direction of the rotary shaft (3).

5. A plain bearing assembly according to claim 2, characterized in that the pin (23) is arranged parallel to the diameter of the rotation shaft (3) and that the pin (23) is offset from the steel backing (22) along the centre line in the circumferential direction of the rotation shaft (3).

6. A plain bearing assembly according to any of claims 1 to 5, characterized in that the steel backing (22) is provided with an oil inlet channel (221), one end of the oil inlet channel (221) being in communication with an oil pump via an external conduit (26) and the other end being in communication with the bearing surface of the spindle.

7. A plain bearing assembly according to claim 6, in which the bearing elements (2) are arranged in pairs, and the bearing elements (2) of each pair are arranged in central symmetry.

8. A plain bearing assembly according to claim 6, characterized in that the wall of the receiving cavity of the bearing block (1) is concavely provided with a mounting groove into which the side of the support plate (21) facing away from the steel backing (22) is inserted.

9. The plain bearing assembly according to claim 6, characterized in that the bearing unit (2) further comprises a fixing plate (25) provided at an axial end portion of the support plate (21) along the rotary shaft (3), and the fixing plate (25) is fixed to the bearing housing (1), the support plate (21) being fixed to the fixing plate (25).

10. A plain bearing assembly according to claim 6, characterized in that at least one of the bearing surface of the spindle and the peripheral wall of the rotary shaft (3) is provided with a wear-resistant layer.

11. A wind park according to any of claims 1-10, wherein the wind park comprises a plain bearing assembly according to any of claims 1-10.

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