The safety monitoring of mine devices, especially mine hydraulic supports, develops at a low pace which has been unable to adapt to increasingly complex exploitation environment.

The valves for shield support are the core control components of shield support, so stricter requirement is needed for their performance.

As the key control components of coal mining shield support, valves for shield support are steadily developing to high pressure and mass flow to meet the high yield and efficiency requirements of comprehensive coal mining.

Study on stability technology of hydraulic support in fully-mechanized caving working face with large dip angle;

Light type caving coal hydraulic support structural characteristic and discussion on canopy structural design;

The research of appropriate original supporting pressure of powered support;

Dynamic analysis of caving powered support stability in deeply inclined coal seam;

Study on powered support canopy motion track of joints with clearance;

The structure patterns and performance analysis of the double-telescopic props of hydraulic supports;

Computer aided concept design system for hydraulic supports;

The structure characteristics and principle of the new type relief valve used on hydraulic supports were introduced.

Study on the Structure of the Cartridge valve with on Operating system of the Hydraulic supporter Support-post;

Study on the feasibility of the hydraulic supporter with water medium;

A kind of new style combination linear hydraulic supporter is offered,which possesses the characteristic of light weight,reasonable structure, excellent mobility and low investment ect.