The product meets the requirements of “Safety Regulations of the Coal Mine”, it applies to mult-rope friction hoist（type JKD/JKMD），single rope winding hoist（type JK/2JK）.
As compared with other products at home and abroad, the constant decelerate electro-hydraulic control device unit uses the constant value closed ring braking decelerations controlling method controlled by high performance electro-hydraulic controlling elements, has the advantage of high precision control, rapid response and best performance. The main loop good dynamic performance and two-way regulation, which is optimized and uses cartridge valve block control, in response to the velocity curve of the braking process, it demonstrates fast decay speed for the overshoot, that is, strong deviation rectification capability, and good safety braking effects. The hydraulic system has good braking and skidproof performances, strong anti-pollution capability, low faulty rate, little maintenance amount, simple loop, beautiful appearance, and adopts imported components with high reliability and easy debugging, the required spare braking hydraulic power source has less capacity.
In the technological performance, the unit has reached the world’s advanced level.
