Special bearing for coal mining machine

Abstract

The invention provides a special bearing for a coal mining machine, which comprises a bearing, a core shaft and an inclined baffle ring, wherein the outer ring adopted by the bearing has double baffle edges, and can not be separated from a roller, the bearing has no inner ring and is in fit with single-row cylindrical roller bearings of a copper retainer for use, the core shaft adopts a step structure which is convenient for positioning, four sets of single-row cylindrical roller bearings are mutually matched and arranged on a second step of a step shaft, and the inclined baffle ring adopts a slope design and is arranged on a third step of the step shaft. The special coal mining machine bearing is arranged in a coal mine machine walking mechanism. The invention improves the sectional surface of a roller, the non-sealing ellipse or approximately rectangle can be formed on the contact surface of the roller and a rolling passage after the bearing is loaded, and the design principle of using the core shaft for replacing the inner ring is adopted. The invention effectively prevents the occurrence of the universal phenomenon of shaft fracture caused by over-high hardness of the shaft core part in coal mining machine industry, materials with high intensity, high toughness and higher harden ability are adopted, and in addition, a special heat treatment process is adopted.

Description

(1) Technical field [0001] The invention relates to the field of coal mining machinery, in particular to a special bearing for coal mining machinery. (2) Background technology [0002] The bearings used in domestic coal mining machinery are both domestically produced and imported. The bearings used in domestic production often have early fatigue spalling, which seriously affects the performance of the bearings, shortens the service life of the bearings, and partially exhibits load-carrying capacity. insufficient phenomenon. The use of imported bearings in coal mining machines has achieved some good results, but the high cost of bearings every year has brought a heavy burden to the enterprise. (3) Contents of the invention [0003] The object of the present invention is to provide a special bearing for coal machinery with high strength, high toughness and high hardenability. [0004] The purpose of the present invention is achieved in this way: it includes a bearing, a ma...

AI Technical Summary

Problems solved by technology

[0002] The bearings used in domestic coal mining machinery are both domestically produced and imported. The bearings used in domestic production often have early fatigue spalling, which seriously affects the performance of the bearings, shortens the service life of the bearings, and partially exhibits load-carrying capacity. Insufficient phenomenon

The use of imported bearings in coal machines has achieved some good results, but the expensive bearing costs paid every year have brought a heavy burden to the enterprise

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