On how to build system model of air chain hoist;

Sometimes the electric hoist is damaged in oil tank hoisting construction because of overload operation.

On the basis of summarying and analyzing current measuring methods of glide quantity of electric hoist, the paper put forward an intelligent measuring system using single chip microcomputer AT89C52.

The storage tank instollation method with central controlled electric hoists is a new upside down erection technique.

Based on JB standard,one kind of performance automatic testing system for electric wire rope hoists is proposed and the realization of hardware and software is introduced.

This paper provides a new way of hoisting - hoisting by handle pulley and analyzes experience that is worth spreading and problems paid attention to in hoisting on large net frame by introducing hoisting plan of refined coal shed in a coking factory in Jilin province.