Suspension type hydraulic prop and technical principle, the hydraulic suspension force in the cover, the working resistance, the suspension force can be balanced by the 4/5 of the inner cavity directly acting on the prop column, and the column itself has only 1/5 of the working resistance, which improves the stability and the prop The safety also greatly improves the weight capacity and the height of supporting steel acrow props.
(1) The steel is made of 27 silico-manganese steel, which will not produce sparks during collision;
(2) Increased strength steel acrow props are not easy to bend, and the steel is adjusted and quenched;
(3) Strong anti-bias ability and high stability;
(4) High reliability
Suspended hydraulic props no longer need to set up the arc welding seam which is technically difficult on the column, and at the same time improve the strength and reliability of the column, and avoid the hidden danger of roof falling caused by the fracture of the weld.
Ensure the safety of staff.
(5) Light weight
Depending on the specifications of the steel acrow props, the weight ratio of the entire column is reduced by 15-30% of the active weight abroad, but its working resistance, working stroke and safety factor are higher than that of aluminum adjustable props.
(6) Large working stroke
Wide range of use, DWN makeup adjustable props has a larger working stroke, expands the scope of use, and can also reduce the size of the pillar, especially the working face with a large roof sink. The recovery of the DWW adjustable props still meets the increasing resistance. Lowering not only facilitates the support, but also improves the columns and columns to reduce consumption and reduce production costs. Each of its specifications can replace the 1-5 specifications of the DZ series pillars, reducing the specifications of the pillars, and also bringing convenience to the management of the pillars. Coal pillar equipment reduces capital investment and management costs.
(7) High strength
At present, the pillars at home and abroad have a virtual roof due to internal leakage, and even cause accidents that cause the pillar to automatically fall down and hurt people. All the sealing points of the DWX type pillar are external, which can be visually inspected. Once the pillar leaks , Can inject liquid or replace steel acrow props at any time, ensuring the safety and reliability of the roof support of coal mining face. The suspension type single hydraulic prop has no column head, no piston and no national arc welding seam, which simplifies the structure of the prop and improves the safety. The movable column and the pillar are all integral structures, with high strength and good stability.
(8) Easy to use
When steel acrow props lifting, the operator must rise accordingly, especially for the higher working surface, the operator is very inconvenient and unsafe, and the DHK series three-way valve is located on the handle, when the wave body is injected, the three-way valve will not follow It rises with the increase of the live column, and the operation is convenient and reliable.
