The Research Of Design, Manufacture And Application Of Worm Pair Elevator Traction Machine

With the rapid development of our economy,high-level modern buildings are gradually appearing and the needs for building intelligences are enlarging,therefore the dosage of elevator is nasty to rise.Elevator traction machine as the driving device quality directly concerns about the elevator's function,the sense of comfort and the safety of its working.In the last one hundred years,worm pair traction machine has been the main way of transmision because of its big transmision ratio, compact structure,working stability,low noise and cheap price.Now almost all geared traction machines employs this kind of traction machine in our country.Traction machines come into being in the coure of the use of elevators.The history of development of elevators is the history of traction machines.The design of elevator in our country is quite late.The research step of tration machines in our country is in the beginning.This essay is based on the products in a Zhejiang elevator parts Ltd—worm pair traction machines.The research is especial on the technology improvement in the process of performing programs and discuss problems of working processing.The main point of the essay is as the following:1.According to the inherent characters of the elevator traction machine,this paper studies calculating formula of designing the length of the single-head whorl pole teeth and the correcting formula for calculating the fatigue intensity of the worm contact;elicits the method of calculating the rising temperature of the speed reducer worm pair deceleration of DIN 3996.2.To aim at manufacture of worm pair elevator traction machine,this paper studies ZA27 alloy the craft of making worm roughcast and the non-antithesis principle worm hobbing cutter craft.It also analyses in detail the calculation of designing elevator traction wheel rope-groove shaped-vehicle-cutter shape-line and the commanding points for manufacture.3.This paper analyzes in detail the rational choice of the elevator traction machine and the right enactment of using the spot.