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一、引言安全(限矩)型液力偶合器在煤矿生产中已获得广泛的应用,张家口煤矿机械厂的年产量达5000台,主要使用于刮板输送机、刨煤机和带式输送机中,起防止动力过载,均衡电机负荷,减小冲击与振动以及改善电机起动条件等作用。近年来,随着煤炭生产机械化的发展,输送机的运量、运距和功率在不断增大。目前井下已经使用的带式输送机最大功率达2×400=800千瓦,而定型生产的安全型液力偶合器,在转速为1480
I. INTRODUCTION Safety (limit torque) type hydraulic coupling has been widely used in the production of coal mines. The annual output of Zhangjiakou Coal Mine Machinery Factory reaches 5000 units, mainly used in scraper conveyors, plows and belt conveyors Medium, starting to prevent power overload, load balance, reduce the impact and vibration and improve the motor starting conditions and so on. In recent years, with the development of coal production mechanization, conveyor capacity, transport distance and power are increasing. Currently downhole belt conveyor has been used with a maximum power of 2 × 400 = 800 kW, while the type of safety-type fluid coupling produced at a speed of 1480