CN221374236U - Radial circular bearing capable of offset elastic compensation - Google Patents

Abstract

The utility model discloses a radial circular bearing capable of biasing elastic compensation. The bearing comprises a bearing body and a plurality of elastic tilting pads, wherein each elastic tilting pad comprises a supporting tile and a supporting arm, a first Babbitt alloy layer is poured on the inner side of each supporting tile to form a bearing surface, one end of each supporting arm is supported in a shaft hole of the bearing body, and the other end of each supporting arm is supported on the outer side of each supporting tile. The first Babbitt metal layer is poured on the elastic tilting pad, so that the elastic tilting pad has good friction performance and wear resistance, and the friction and wear of a bearing can be effectively reduced; the elastic tilting pad and the bearing body are formed by cutting and processing the same blank by the warp, so that the structure is simplified, the subsequent assembly links are omitted, and the cost is reduced; in addition, the bearing body is provided with the front end cover and the rear end cover, has the function of sealing lubricating oil, avoids the phenomenon of insufficient lubricating oil film, can prevent impurities such as dust from entering the inside of the bearing, and prolongs the service life of the bearing.

Description

Radial circular bearing capable of offset elastic compensation

Technical Field

The utility model relates to the technical field of bearings and machining, in particular to a radial circular bearing capable of offset elastic compensation.

Background

The radial tilting pad sliding bearing is a special sliding bearing and is mainly used for bearing and supporting axial and radial loads. It consists of a plurality of sliding tiles and a race, wherein the sliding tiles have an inclination angle, which can be adaptively adjusted within a specific range to accommodate axial and radial movements. The bearing structure can provide better bearing capacity, self-adjusting capacity and running stability, and is widely applied to rotating machinery such as high-speed steam turbines, compressors, gear boxes, high-pressure pumps and the like.

Although the radial tilting pad sliding bearing has the advantages, the radial tilting pad sliding bearing has the defects of complex sliding pad structure, high processing difficulty, serious abrasion of part of sliding pads, overheating of the bearing caused by insufficient lubricating oil film, shortened service life and the like. In view of these drawbacks, there is a need for further technical improvements to improve the performance and reliability of radial tilt pad sliding bearings.

Disclosure of utility model

In order to improve the performance of the radial tilting pad sliding bearing, the utility model provides a radial circular bearing capable of biasing elastic compensation.

The technical scheme adopted by the utility model is as follows: the utility model provides a radial round bearing that can bias elasticity compensation, includes bearing body and a plurality of elasticity tilting pad, elasticity tilting pad includes support tile and support arm, the inboard of support tile has been pour first babbitt metal layer, forms the bearing surface, support arm one end is supported in the shaft hole of bearing body, the other end is supported the outside of support tile.

Preferably, the cross-sectional dimension of the two ends of the supporting arm is larger than that of the middle part, and the two ends of the supporting arm are in arc transition with the connecting parts of the bearing body and the supporting tile.

Preferably, the supporting arm, the bearing body and the supporting tile are of an integrated structure.

Preferably, gaps formed by linear cutting are formed between the support tiles and the bearing body, and between the two sides of the support arm and the bearing body.

Preferably, the support arm is arranged eccentrically with respect to the support tile.

Preferably, blind holes corresponding to the supporting arms one by one are formed in the end faces of the two sides of the bearing body, and the blind holes cover the gaps in the range of the two sides of the supporting arms.

Preferably, the two side rabbets of the bearing body are provided with end covers, and a second Babbitt metal layer is poured on the inner hole wall of each end cover.

Preferably, a plurality of oil inlets staggered with the elastic tilting pad are uniformly arranged on the bearing body in the radial direction, and a plurality of oil return ports which are completely communicated in the axial direction are arranged on the bearing body and the end cover.

Preferably, the end cover is fixedly connected with the bearing body through a screw.

Preferably, the bearing body is made of low-alloy high-strength structural steel, and the first Babbitt metal layer and the second Babbitt metal layer are made of tin-based Babbitt metal.

The utility model has the following beneficial effects:

1. The first Babbitt metal layer is poured on the elastic tilting pad, so that the elastic tilting pad has good friction performance and wear resistance, and the friction and wear of the bearing can be effectively reduced;

2. The elastic tilting pad and the bearing body are formed by cutting and processing the same blank by the warp, so that the structure is simplified, the subsequent assembly links are omitted, and the cost is reduced;

3. The bearing body is provided with the front end cover and the rear end cover, has the function of sealing lubricating oil, avoids the phenomenon of insufficient lubricating oil film, and meanwhile, the end covers can prevent impurities such as dust from entering the bearing, so that the service life of the bearing is prolonged.

Drawings

Fig. 1 is an assembled schematic view of an embodiment of the present utility model.

Fig. 2 is a schematic front view of a bearing body according to an embodiment of the present utility model.

FIG. 3 is a schematic cross-sectional view of a bearing body A-A in an embodiment of the present utility model.

Fig. 4 is a schematic sectional view of a bearing body B-B in an embodiment of the present utility model.

Fig. 5 is a schematic view of wire cutting of a bearing body according to an embodiment of the present utility model.

Fig. 6 is a schematic front view of an end cap in an embodiment of the utility model.

The bearing comprises a bearing body 1, a blind hole 101, an oil inlet 102 and an oil return port 103; an elastic tilting pad 2, a supporting pad 201, a supporting arm 202, a first Babbitt metal layer 203, and a slit 204; end cap 3, second babbitt layer 301; and a screw 4.

Detailed Description

The utility model will be further described with reference to examples and drawings.

In an embodiment, as shown in fig. 1-6, a radial circular bearing capable of offset elastic compensation comprises a bearing body 1 and a plurality of elastic tilting pads 2, wherein the elastic tilting pads 2 comprise support tiles 201 and support arms 202, a first Babbitt metal layer 203 is poured on the inner side of each support tile 201 to form a bearing surface, one end of each support arm 202 is supported in a shaft hole of the bearing body 1, and the other end of each support arm 202 is supported on the outer side of each support tile 201. The supporting arm 202, the bearing body 1 and the supporting tile 201 are in an integral structure, and gaps 204 formed by wire cutting are formed between the supporting tile 201 and the bearing body 1 and between two sides of the supporting arm 202 and the bearing body 1, namely, the elastic tilting pad 2 and the bearing body 1 are formed by cutting the same blank by the same blank wire. The first babbitt layer 203 is poured on the elastic tilting pad 2 in this embodiment, so that the elastic tilting pad 2 has good friction performance and wear resistance, and can effectively reduce friction and wear of the bearing. And the elastic tilting pad 2 and the bearing body 1 are formed by cutting and processing the same blank through the warp, so that the structure of the bearing is simplified, the subsequent assembly links are omitted, and the production and processing cost is obviously reduced.

In the embodiment, as shown in fig. 5, the cross-sectional dimensions of the two ends of the supporting arm 202 are larger than the cross-sectional dimensions of the middle part, and the connection parts between the two ends of the supporting arm 202 and the bearing body 1 and the supporting tile 201 are in arc transition. With the structure, the support arm 202 can obtain good mechanical properties, and can avoid stress concentration, thereby playing a good role in supporting the support tile 201.

In an embodiment, as shown in fig. 5, the support arm 202 is positioned eccentrically with respect to the support tile 201, i.e. the angle α is greater than the angle β in fig. 5. This design is primarily determined by the bearing stress direction to ensure that the support arm 202 is in the optimal support position. In addition, the oil inlet direction is also considered, that is, the angular position of the oil inlet 102 needs to be considered.

In the embodiment, as shown in fig. 2 and 3, blind holes 101 corresponding to the support arms 202 one by one are provided on the end surfaces of the two sides of the bearing body 1, and the blind holes 101 cover gaps 204 in the range of the two sides of the support arms 202. The blind hole 101 mainly plays a role in communicating the lubricating oil flow channel in the bearing, so that the lubricating oil on two sides of the supporting arm 202 is communicated, and the phenomenon of insufficient lubricating oil film is avoided.

In the embodiment, as shown in fig. 1 and 6, end covers 3 are assembled at two side rabbets of the bearing body 1, and the end covers 3 are fixedly connected with the bearing body 1 through screws 4. A second babbitt layer 301 is cast on the inner wall of the end cap 3. The two end covers 3 have the function of sealing lubricating oil, so that the defect of a lubricating oil film is avoided, meanwhile, the end covers 3 can prevent impurities such as dust from entering the inside of the bearing, and the service life of the bearing is prolonged. In addition, the second babbitt layer 301 serves as an auxiliary support for the shaft in addition to the first babbitt layer 203.

In the embodiment, as shown in fig. 1, 4 and 5, a plurality of oil inlets 102 staggered with the elastic tilting pad 2 are uniformly arranged in the radial direction of the bearing body 1, and a plurality of oil return ports 103 completely penetrating in the axial direction are arranged between the bearing body 1 and the end cover 3. When the device is in operation, the lubricating oil with pressure enters the bearing from the oil inlet 102 in all directions, a lubricating oil film is formed on the surfaces of the first Babbitt metal layer 203 and the second Babbitt metal layer 301, then the lubricating oil flows out from a gap between the shaft and the bearing, and finally returns to the oil tank through the oil return port 103. The lubricating mode has the functions of reducing friction and abrasion, cooling and heat dissipation, guiding away pollutants and providing sealing and protection, is beneficial to protecting and prolonging the service life of the sliding bearing, and improves the overall performance of the bearing and even equipment.

In the embodiment, the material of the bearing body 1 is low alloy high strength structural steel, and the material of the first babbitt metal layer 203 and the second babbitt metal layer 301 is tin base babbitt metal. The low-alloy high-strength structural steel is engineering structural steel with good performance, has excellent mechanical properties, and is suitable for manufacturing parts or workpieces with high strength and high wear resistance such as sliding bearings. The Sn-based Babbitt alloy has multiple functions of antifriction, wear resistance, heat conduction, corrosion resistance and the like, so that the Sn-based Babbitt alloy is particularly suitable for being used as a bearing support surface layer material, and is beneficial to improving the reliability, the wear resistance and the service life of a bearing.

It is apparent that the above examples of the present utility model are merely illustrative of the present utility model and are not limiting of the embodiments of the present utility model. Other obvious variations or modifications which are extended by the spirit of the present utility model are within the scope of the present utility model.

Claims (10)

1. The utility model provides a radial round bearing that can bias elasticity compensation, includes bearing body (1) and a plurality of elasticity tilting pad (2), its characterized in that, elasticity tilting pad (2) are including supporting tile (201) and support arm (202), first Babbitt metal layer (203) have been pour to the inboard of supporting tile (201), form the bearing surface, support arm (202) one end is supported in the shaft hole of bearing body (1), the other end is supported the outside of supporting tile (201).

2. The radial circular bearing capable of biasing and elastic compensation according to claim 1, wherein the cross-sectional dimension of two ends of the supporting arm (202) is larger than that of the middle part, and the connecting parts of two ends of the supporting arm (202) and the bearing body (1) and the supporting tile (201) are in arc transition.

3. The biasable, elastically compensating radial circular bearing according to claim 1 or 2, characterized in that the support arm (202) is of unitary construction with the bearing body (1), the support tile (201).

4. A radial circular bearing with offset elastic compensation according to claim 3, characterized in that between the support tile (201) and the bearing body (1), between the two sides of the support arm (202) and the bearing body (1) there is a slit (204) formed by wire cutting.

5. The biasable, elastically compensating radial circular bearing of claim 4, wherein the support arm (202) is positioned eccentrically with respect to the support tile (201).

6. The radial circular bearing capable of offset elastic compensation according to claim 4, wherein blind holes (101) corresponding to the supporting arms (202) one by one are arranged on two side end surfaces of the bearing body (1), and the blind holes (101) cover the gaps (204) in the range of two sides of the supporting arms (202).

7. The radial circular bearing capable of offset elastic compensation according to claim 1, wherein end covers (3) are assembled at two side rabbets of the bearing body (1), and a second Babbitt alloy layer (301) is poured on the inner hole wall of the end cover (3).

8. The radial circular bearing with offset elastic compensation according to claim 7, characterized in that the bearing body (1) is uniformly provided with a plurality of oil inlets (102) staggered with the elastic tilting pad (2) in the radial direction, and the bearing body (1) and the end cover (3) are provided with a plurality of oil return ports (103) which are completely penetrated along the axial direction.

9. The biasable, elastically compensated radial circular bearing of claim 7, characterized in that the end cap (3) is fixed to the bearing body (1) by means of a screw (4) connection.

10. The radial round bearing with offset elasticity compensation according to claim 7, wherein the material of the bearing body (1) is low alloy high strength structural steel, and the material of the first babbitt layer (203) and the second babbitt layer (301) is tin-based babbitt.