Motor speed of main windlass in high furnace material-supplying system is controlled,and control program of overspeed-protecting is set.

Application of PLC in the speed control system of frequency converter in the main hoist of blast furnace;

A comprehensive account is given in the paper of the renovated main hoist's electric drive,No.

For the main hoist drive reductor \'s fault of 7# blast furnace of Han-steel, we analysed the origin which caused fault of the redactor, the reason was that gear backlash error made the force of the two reductor \'s gear wheel out-of-step, finally, we improved the structure of the system successfully.

Dynamic Modeling and Dynamic Analysis for Multi-Flow Transmission System of Double Speed Hoist;

This paper analysed the lock itself ability for the worm gear used the hoist in detail,and discussed the every kind of influence factor for the lock itself,pointed out noticing problems in designing the worm gear used the hoist.

This thesis applied the elastic contact problem of the steel cable and the hoist drum ,combined the calculation method on the intention of mine lifter and improved it, proposed the calculation means of the hoist drum.

Control system design of hoisters based on single-chip microprocessors;

The operation process of the Second Blast Furnace is described and the composition and working principle of the DC adjustable speed control system are introduced indicating how accurately and last the Siemens 6RA24 DC adjustable speed device controls the speed of the hoister motor.

Hoisting assembly methods of the rapid gate of water inlet use for winch & pulley block for the Three Gorges Engineering Under-ground Power Statation;

The development history of asphalt mixing plant is overviewed,the development of winch control sys- tem is summarized,the structure and characteristics of all kinds of winch control system are analyzed,which provides reference for the design,use and maintenance of hot storage bin winch control system of asphalt mixing plant.