There is a substantial solution to the problem of bearing "running circle" that plagued my country's machinery industry. Recently, the technology of overcoming the bearing running outer ring developed by Liu Yi, a process engineer of Guangdong Shaozhu Group Shaoguan Casting and Forging Machinery Equipment Co., Ltd., has obtained a number of national patents and is widely used in jaw crushers in the sand and aggregate industry. Promotion.

The so-called "running ring" of a bearing refers to the relative movement between the outer ring and the bearing seat or the inner ring and the shaft of the bearing. The planetary gears of the wind power gearbox run in circles, which will cause irreparable damage to the gearbox. At present, there is no mature technology in China that detects bearing "running ring" faults in advance and solves them in time. Most bearing "running ring" faults are confirmed after the gearbox is damaged.

The inventor of this technology, Liu Yi, has conducted long-term research on the problem of mining machinery, especially the jaw crusher mobile jaw bearing running on the outer ring, which seriously affects the service life. He finally overcome this problem and applied for multiple patents. According to Liu Yi, after the bearing is assembled, the ball rotates, and the inner ring and the shaft do not move (the outer ring and the hole do not move). In the prior art, the eccentric shaft and the inner ring of the bearing adopt an interference fit. During assembly, the two inner rings of the left and right bearings of the movable jaw are respectively heated and sleeved into the eccentric shaft. If the hole and the outer ring have an interference fit, it cannot be installed; if it can be installed, it is a clearance fit, and sooner or later it will run out of the outer ring, which will seriously affect the life of the jaw. The patented technology achieves the effect that the movable jaw bearing does not run out of the outer ring.

At present, this technology has been promoted in the China Sand and Stone Association, and has been used in many mines in Fujian, Guangdong, Guangxi, Guizhou, Sichuan, Jiangxi and other provinces (regions) for many years. Products that meet the People's Republic of China Machinery Industry Standard JB/T1388-2015.

"Overcoming the moving jaw bearing and not running the outer (inner) ring is similar to overcoming the wind turbine bearing running the outer ring. In contrast, the moving jaw bearing works in a harsher environment and the bearing can withstand greater torsion. Therefore, this technology It is more convenient and more practical to overcome the problem of the outer ring of the bearing of the wind turbine." Liu Yi said that in the next step, the technology will be expanded from the moving jaw bearing to the field of the generator set bearing, so as to better serve the equipment manufacturing enterprises and extend the gearbox. Service life, improve use efficiency.