Self-compensating solid self-lubricating sliding bearings

Abstract

The invention discloses a self-compensating solid self-lubricating sliding bearing. Four rectangular grooves are arranged in the axial inner surface of a bearing matrix; a solid self-lubricating sliding block and an induction magnet are sequentially arranged in each rectangular groove; a spiral coil is installed in a spiral groove, which is formed in the inner surface of a hollow shaft; four torque strain sheets with a same shape are adhered on the power-input side of the hollow shaft; the spiral coil, the torque strain sheets, and a digital circuit are serially connected in a DC circuit; oneend of each torque strain sheet is connected to a power supply in a full bridge mode, the other end is connected to the digital circuit; and the digital circuit is serially connected to the spiral coil. During the process of friction between the hollow shaft and the bearing matrix, the solid self-lubricating block provides a lubricating material continuously, a transfer film is formed, thus the provided sliding bearing has a strong bearing performance, the friction coefficient is reduced, and the service life of the bearing is greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of bearings, in particular to an automatic compensation solid self-lubricating sliding bearing. Background technique [0002] Self-lubricating bearings are mainly used in aerospace, large-scale water conservancy facilities, ships, mechanical facilities and other fields. The existing solid self-lubricating bearings are mainly divided into two types: mosaic type and powder metallurgy integral sintered type. Most of the solid self-lubricating bearings reduce the wear of the bearing on the shaft by bonding high-quality materials or pressing and sintering metal-based powders to form solid self-lubricating materials. For example, a Chinese patent (ZL201320341799.1) discloses a mosaic solid self-lubricating bearing. One end of the bearing is provided with an annular stopper, and the other end is provided with an outer chamfer. The annular groove and the bearing body are also provided with a plurality of through ho...

AI Technical Summary

Problems solved by technology

For example, a Chinese patent (ZL201320341799.1) discloses a mosaic solid self-lubricating bearing. One end of the bearing is provided with an annular stopper, and the other end is provided with an outer chamfer. Annular grooves, the bearing body is also provided with a number of through holes for storing solid lubricating materials to reduce the friction coefficient, but this invention has problems such as low utilization of solid lubricating materials

The Chinese patent (201620490002.8) provides an automatic compensating self-lubricating bearing. The openings at both ends of the bearing body are provided with guide slopes. Wear compensation, but the solid self-lubricating material is used as the load-bearing material, and the load-carrying capacity is low

A Chinese patent (ZL98244127.4) provides a sand-discharging metal-based inlaid solid self-lubricating bearing. The bearing is a bimetallic matrix of steel and copper. The matrix has a porous structure, and solid lubricants are embedded in the holes, copper The inner surface of the bushing has a mesh groove, which has the function of automatic sand discharge, and the friction coefficient is low, but the solid self-lubricating agent cannot be automatically replenished

Chinese patent (ZL98204261.2) discloses a bimetallic solid lubricated sliding bearing. The outer end surface of the antifriction lining is used as the base backing layer, and the inner end surface of the antifriction lining is pressed with grooves, and a solid lubricant is pressed inside the grooves. , the depth of the groove is less than the thickness of the anti-friction lining, but the solid self-lubricating agent of this invention cannot be automatically replenished under working conditions

[0003] To sum up, compensable solid self-lubricating bearings have low load-carrying capacity and self-lubricating materials cannot be automatically compensated, which restricts the development of self-lubricating bearings

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