Heavy-load high-temperature self-lubricating rolling bearing and processing technology

Abstract

The invention relates to a heavy-load high-temperature self-lubricating rolling bearing. The bearing includes an inner ring, an outer ring, and an intermediate ring arranged between the inner ring andthe outer ring, wherein the inner ring, the intermediate ring and the outer ring are concentric, a ball set is arranged between the intermediate ring and the outer ring, the outer ring rotates relative to the intermediate ring according to the ball set, the intermediate ring and the inner ring are fixedly connected, and a lubrication cavity is formed between the intermediate ring and the inner ring. The lubrication cavity is internally provided with a lubricant extrusion device which is communicated with a lubricant nozzle penetrating through the intermediate ring. When the lubricant extrusion device is heated, the lubricant extrusion device extrudes a lubricant from the lubricant extrusion device to the space between the intermediate ring and the outer ring through the lubricant nozzle to provide lubrication for rolling of the ball set, the problem is effectively solved that the lubricant and a channel of the bearing form stains and noise and vibration are caused, and the safety andstability of the bearing in work are improved.

Description

technical field [0001] The invention relates to the technical field of machinery, in particular to a heavy-duty high-temperature self-lubricating rolling bearing and a processing technology. Background technique [0002] With the development of machinery industry technology, the design and manufacturing technology of bearings have also been fully developed, and bearings have the characteristics of a wide range of applications. As a common mechanical structure in the machinery industry, bearings can bear loads, reduce friction, and improve mechanical transmission efficiency for mutually rotating mechanisms. [0003] In the prior art, there are many types of heavy-duty bearings. According to the frictional properties of the bearings, they can be divided into two categories: sliding friction bearings and rolling friction bearings; according to the load they can bear, they can be divided into: ① radial bearings, Or radial bearings, which bear radial loads; ②Thrust bearings, or ...

AI Technical Summary

Problems solved by technology

[0005] However, the currently used heavy-duty bearings bear a large load under rotation, and when working, due to the increase in friction, high temperatures will be generated, causing the lubricant in the bearing to fail easily at high temperatures. It causes potential safety hazards in the use of heavy-duty bearings; usually to solve this problem, the high-temperature rolling bearings usually used are holes of appropriate size and orderly arrangement on the metal friction surface of the bearing base, and then embedded in the holes with self-lubricating High-performance self-lubricating bearings made of molded solid lubricants, loaded by metal matrix high-strength brass

Generally, graphite or molybdenum disulfide is used for this kind of molding solid lubricant. The latter generally has an operating temperature within 300°C, and the former has an operating temperature within 800°C, which is not suitable for high-speed, high-environment temperature fields; Pitting corrosion or line corrosion occurs on the ring. The so-called pitting corrosion is that when the rolling elements are in contact with the groove, it is easy to form microscopic pits or line pits on the relatively low-curvature groove. The existence of these pits or line pits makes the bearing in There is a climbing effect during operation, with large internal friction, large noise and large vibration. In this operating state, it is easy to cause fatigue and damage to the bearing, which will affect the service life of the heavy-duty bearing.

Images