Lifting machine upper chain wheel set device

Abstract

The invention aims to provide a lifting machine upper chain wheel set device. Transmission is achieved by both a chain wheel set with a split block chain wheel and a shaft by means of friction througha bearing on a rolling bearing house. Due to the split mode, the problems of chain wheel bearing falling, shaft end abrasion, breaking and the like are well solved, abrasion between an upper shaft and the bearing and abrasion between the upper shaft and the split block chain wheel are reduced, the service life is obviously improved, and the operation rate of equipment is greatly improved; meanwhile, common flat key coupling is adopted, so that a high-speed, impact-bearing or variable-load shaft is better adapted; a common flat key is good in alignment performance, high in positioning precision and convenient to disassemble and assemble, and abrasion is reduced; and a sealing assembly is mounted between the split block chain wheel and the bearing so as to prevent leakage of lubricating oil, dust invasion or leakage of dust to the outside, and the sealing effect is good.

Description

technical field [0001] The invention relates to the field of elevators, in particular to an upper chain wheel set device of an elevator. Background technique [0002] Elevators are mainly used for material transportation and are widely used in industrial production and material handling systems. The upper sprocket set of the hoist is an important transmission device when the hoist is running. It realizes the stable transportation of materials through the smooth operation of the sprocket set on the upper shaft. [0003] The upper part of the traditional hoist is driven by gears or general sprockets. When conveying a lot of materials, the casing is easy to expand and deform, which will damage the gears or bearings. If ordinary sprockets are used, the bearings will easily fall off when the sprocket rotates. end wear, tearing off, etc., and the wheel rim is seriously worn due to long-term contact with the chain, and often needs to be replaced as a whole, which is costly, and th...

AI Technical Summary

Problems solved by technology

[0003] The upper part of the traditional hoist is driven by gears or general sprockets. When conveying a lot of materials, the casing is easy to expand and deform, which will damage the gears or bearings. If ordinary sprockets are used, the bearings will easily fall off when the sprocket rotates. end wear, tearing off, etc., and the wheel rim is seriously worn due to long-term contact with the chain, and often needs to be replaced as a whole, which is costly, and the wear of the shaft and gear or bearing is much faster than that of the sprocket of the block, difficult maintenance, and long life. Short, in addition, in the actual operation, the upper part of the hoist is subjected to a large dynamic pressure. Due to the long-term operation, the upper shaft is inevitably squeezed and worn, and finally a gap is formed. Some powdery materials leak through this gap and easily invade the bearing. or exposed to the outside world

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