Single hydraulic prop the metal prop is a micro-increased friction metal prop, which is used to support the roof of the coal mining face. Metal hydraulic props can also be used on working surfaces that have a large amount of sinking on the roof and are periodically pressed. The metal single hydraulic prop has the characteristics of high initial working resistance and large shrinkage.
After the single hydraulic props are supported, they can quickly reach the initial working resistance and play an early role in supporting the roof. Using the principle of plunger suspension technology, the suspension force of the single hydraulic prop reaches four-fifths of the working resistance, and the force of the column is one-fifth.
As a result, the stability and safety of the single hydraulic prop is greatly improved, and the supporting height and the load-bearing capacity of the single hydraulic prop are improved. The column is no longer provided with arc welding seams that are difficult to guarantee, which improves the strength and reliability of the column, avoids hidden dangers such as roof fall caused by weld seam fracture, and ensures the safety of production personnel. According to the different pillar specifications, the weight is 15-20% lighter than the DZ type single hydraulic props of the same specifications. Its weight is equivalent to that of aluminum alloy hydraulic props, but the working resistance and working stroke are much higher than those of aluminum alloy hydraulic props. It is more convenient to move, transport and use. .
The single hydraulic prop has a large working stroke, which expands the scope of use. One specification can replace other 2-5 specifications of other props, thereby reducing specifications, reducing the amount of prop reserves, improving the use efficiency, and reducing costs. The single hydraulic prop has no internal leakage, and the leakage of the hydraulic prop can be visually inspected with the naked eye. Once the leak can be found in time, it can be replaced in time. Avoiding the false ceiling of the single hydraulic prop and the tedious inspection work caused by the leakage in the hydraulic prop, it is safer to use.
