Calculation of oil pressure for hoister' s hydraulic station in different ways;

Analysis and elimination of low oil pressure phenomenon while switching oilpumps of large axial-flow fans;

Automatic control of oil vessel & oil pressure of speeder;

Design of synchronious control system for 200 MN hydraulic press with two cylinders;

This paper introduces the reason why the pump of 90MN hydraulic press broken frequently and the improvement measure.

The remadehydraulic press has such advantages as nimbleness for controlling and high reliability for opera-tion, therefore automitation of forming boiler seal cover can be realized.

This paper analyses how to delimit working oil pressure and braking moment about the braking system of multi-cables hoisting,further gives the formulate about the relevance of working oil pressure and braking moment.