工业生产中广泛应用齿轮减速器把电动机的高转速变为工作机之低转速,并相应地改变其扭矩。以化学工业为例,据有关单位调查,使用转速大多在40～350转/分范围之间,也有个别的地方需要降速到1/8转/分,甚至每小时小于一转(例如煤气发生炉炉篦的转速0.8～1.5转/小时)。并且大多采用蜗轮蜗杆减速器来降速,但低速时采用蜗轮蜗杆传动有不少缺点。 Widely used in industrial production gear reducer motor high speed into a working machine of low speed, and accordingly change its torque. Take the chemical industry as an example. According to the survey conducted by the relevant agencies, most of the operating speeds are between 40 and 350 rpm, and some places need to slow down to 1/8 rpm or even less than one revolution per hour (for example, gas generation Furnace grate speed 0.8 ~ 1.5 rev / hour). And most use worm gear reducer to reduce speed, but low speed worm gear drive has many shortcomings.