CN109296642B

CN109296642B - Six-oil-leaf sliding bearing

Info

Publication number: CN109296642B
Application number: CN201811358388.7A
Authority: CN
Inventors: 陈涛; 邵钢; 纪宏志; 叶盛鉴; 刘军
Original assignee: Harbin Guanghan Power Technology Development Co ltd
Current assignee: Harbin Guanghan Power Technology Development Co ltd
Priority date: 2018-11-15
Filing date: 2018-11-15
Publication date: 2024-06-07
Anticipated expiration: 2038-11-15
Also published as: CN109296642A

Abstract

The utility model provides a six oil leaf slide bearing, relates to bearing technical field, and it includes bearing body and bearing alloy, and bearing body inner circle and bearing alloy are connected, and bearing alloy bonds with the bearing body through static or rotatory casting mode, is equipped with six bearing oil inlet on the bearing body, and the bearing oil inlet is divided into six bearing oil leaves with the bearing body, and processing has the bearing oil drain groove between two adjacent bearing oil leaves. The six-oil-vane sliding bearing has strong adaptability to the change of the stress direction of mechanical equipment in the continuous operation process from starting to rated working conditions, and the highest temperature of the oil film of the bearing is lower than that of other sliding bearings in the running state. The six-oil-blade sliding bearing can be suitable for the operation working condition that the maximum linear speed can reach 80m/s and the maximum bearing specific pressure can reach 1.5 Mpa.

Description

Six-oil-leaf sliding bearing

Technical field:

The invention relates to the technical field of bearings, in particular to a six-oil-leaf sliding bearing.

The background technology is as follows:

At present, sliding bearings are applied to various types of mechanical equipment, and strict index requirements are set on bearing performance parameters (such as minimum oil film thickness of the bearing, maximum oil film temperature of the bearing and the like) and vibration parameters (such as vibration acceleration of a mechanical equipment box body, track displacement of a rotor axis and the like) in the running process of the equipment. The sliding bearing is suitable for gear transmission mechanical equipment which runs under multiple working conditions or is continuously influenced by external alternating load, and the stress direction of the sliding bearing can be changed or periodically changed along with the working conditions, so that the sliding bearing needs stronger adaptability.

The sliding bearing structure forms commonly used at present comprise a round bearing, an elliptic bearing, a dislocation bearing, a three-oil wedge (three-oil-blade) bearing, a four-oil-blade bearing and a tilting pad bearing; the first three bearings generally adopt a two-oil-leaf structure, have poor adaptability to the change of the stress direction, and need to ensure that the load is positioned in the middle part of the bearing area when in use; the adaptability of the three-oil wedge (three-oil-blade) bearing to the change of the stress direction is slightly stronger than that of the two-oil-blade bearing, but the three-oil wedge (three-oil-blade) bearing has limitations and cannot be suitable for multiple working conditions; the four-oil-leaf bearing is generally applied to the working condition of high speed and light load, but has poor adaptability to the change of the stress direction during high-speed operation; the tilting pad bearing has the strongest adaptability to the stress direction, but the fixed oil vane bearing with the structural size far larger than the same inner diameter cannot be applied to small-sized equipment, and the processing cost is far higher than that of other sliding bearings of several types.

The invention comprises the following steps:

The invention aims to overcome the defects of the prior art, and provides a six-oil-leaf sliding bearing, which solves the technical problems that the stress direction of a sliding bearing used by gear transmission mechanical equipment which runs in multiple working modes or is continuously influenced by external alternating load can be changed or periodically changed along with working conditions, but the structural form of the sliding bearing is poor in adaptability to the change of the stress direction.

The invention adopts the technical scheme that: the six-oil-leaf sliding bearing comprises a bearing body and a bearing alloy, wherein an inner ring of the bearing body is connected with the bearing alloy, the bearing alloy is bonded with the bearing body in a static or rotary casting mode, six bearing oil inlet holes are formed in the bearing body, the bearing body is divided into six bearing oil leaves by the bearing oil inlet holes, and a bearing oil drain groove is processed between two adjacent bearing oil leaves.

The bearing oil drain groove is communicated with the bearing body along the axial direction.

The bearing oil inlet holes are equally distributed on the bearing body.

The bearing oil inlet holes are unevenly distributed on the bearing body.

The beneficial effects of the invention are as follows: the six-oil-vane sliding bearing has strong adaptability to the change of the stress direction of mechanical equipment in the continuous operation process from starting to rated working conditions, and the highest temperature of the oil film of the bearing is lower than that of other sliding bearings in the running state. The six-oil-blade sliding bearing can be suitable for the operation working condition that the maximum linear speed can reach 80m/s and the maximum bearing specific pressure can reach 1.5 Mpa.

Description of the drawings:

FIG. 1 is a radial cross-sectional view of an equal distribution of bearing oil feed holes in accordance with the present invention;

FIG. 2 is an axial cross-sectional view of the bearing of the present invention with oil inlet holes equally distributed;

FIG. 3 is a radial cross-sectional view of the non-uniform distribution of oil feed holes of the bearing of the present invention.

The specific embodiment is as follows:

Referring to each figure, a six-oil-leaf sliding bearing comprises a bearing body 1 and a bearing alloy 2, wherein an inner ring of the bearing body 1 is connected with the bearing alloy 2, the bearing alloy 2 is bonded with the bearing body 1 in a static or rotary casting mode, a plurality of bearing oil inlet holes 3 are formed in the bearing body 1, the bearing oil inlet holes 3 divide the bearing body 1 into a plurality of bearing oil leaves 5, and a bearing oil drain groove 4 is formed between two adjacent bearing oil leaves 5. The bearing oil drain groove 4 is communicated with the bearing body 1 along the axial direction. The bearing oil inlet holes 3 are equally distributed on the bearing body 1. The bearing oil inlet holes 3 are unevenly distributed on the bearing body 1.

The bearing oil drain groove 4 is communicated along the axial direction of the bearing, and an oil inlet groove structure of other types of fixed oil She Zhoucheng is omitted.

Six bearing oil leaves 5 on the six-oil-leaf sliding bearing are in an evenly distributed arrangement structure, and when the bearing stress in all directions is greatly different, the six oil leaves can be designed into an unevenly distributed arrangement structure. The sliding bearing has strong adaptability to the change of the stress direction of mechanical equipment in the continuous operation process from starting to rated working conditions, and the highest temperature of the bearing oil film is lower than that of other sliding bearings in the running state.

When the installed mechanical equipment is operated, a part of the lubricating oil flows into the bearing oil drain groove 4 through the bearing oil inlet hole 3 and further flows into the bearing oil vane 5 (a gap between the bearing and the shaft), and a dynamic pressure oil film is formed between the bearing and the shaft; part of the lubricating oil flows back to an oil pan or a hydraulic system of the mechanical equipment through the bearing oil drain groove 4, and mainly plays a role in integrally cooling the sliding bearing.

Referring to fig. 3, when the forces in the directions of the bearing are uneven, there are maximum force Fmax and minimum force Fmin, and the difference in values is large, six bearing oil leaves 5 can be modified into a non-uniform arrangement form.

For the maximum stress Fmax in each direction, a certain bearing oil vane 5 can be increased, and the stress is acted on the eccentric part of the oil vane; aiming at the smallest stress Fmin in each direction, the bearing oil blade 5 can be correspondingly reduced; the stress in other directions can be arranged on the other four oil leaves, and the included angles of the oil leaves can be locally adjusted according to the stress.

The six-oil-leaf sliding bearing is subjected to iterative analysis by a dynamic pressure sliding shaft calculation program: the maximum circumferential line speed of the usable bearing can reach 80m/s, and the bearing specific pressure corresponding to the stress in each direction can reach 1.5Mpa; the device can be suitable for gear transmission mechanical equipment which is operated under multiple working conditions or continuously influenced by external alternating loads. .

In summary, the six-oil-blade sliding bearing has strong adaptability to the change of the stress direction of mechanical equipment in the continuous operation process from the starting to the rated working condition, and the highest temperature of the bearing oil film is lower than that of other sliding bearings in the running state. The six-oil-blade sliding bearing can be suitable for operating conditions that the linear speed can reach 80m/s at maximum and the bearing specific pressure can reach 1.5Mpa at maximum, and can be suitable for gear transmission mechanical equipment which operates under multiple operating conditions or is continuously influenced by external alternating load.

Claims

1. A six-oil-leaf sliding bearing, characterized in that: the bearing comprises a bearing body (1) and a bearing alloy (2), wherein the inner ring of the bearing body (1) is connected with the bearing alloy (2), the bearing alloy (2) is bonded with the bearing body (1) in a static or rotary casting mode, six bearing oil inlet holes (3) are formed in the bearing body (1), the bearing oil inlet holes (3) divide the bearing body (1) into six bearing oil leaves (5), and a bearing oil drain groove (4) is formed between two adjacent bearing oil leaves (5); the bearing oil drain groove (4) is axially communicated with the bearing body (1); the bearing oil inlet holes (3) are unevenly distributed on the bearing body (1); increasing a certain bearing oil vane (5) aiming at the maximum stress Fmax in each direction, and applying the stress to the eccentric part of the oil vane; correspondingly shrinking the bearing oil blade (5) aiming at the minimum stress Fmin in each direction; the stress in other directions is arranged on the other four oil leaves, and the included angles of the oil leaves are locally adjusted according to the stress.