DN (06-18), DN (20-22)-300/90, DN (25-28)-250/90, DN (31.5- 35)-160/90, DN (-45)-150/110 The internal injection type mining single hydraulic prop series products are made of domestic high quality 27SiMn seamless steel tubes and heavy forgings. The company has a complete quality management system. The finished products are strictly tested according to the standard MT112.1-2006 standard, and the quality is reliable and excellent performance.
The main features of the product: no need to configure the emulsion pumping station and the pipeline liquid supply system, the working fluid is not discharged when the column is returned; the sealing performance is reliable; the manual operation of the hand pump is used to raise the column and the initial support, the lower column and the external injection. The same type of single hydraulic props, convenient management, long service life; can be used in the environment of power outages, is an essential tool for mine rescue and rescue. DN (06-45) single hydraulic prop series products are equipped with safety valves to maintain the constant resistance of the single hydraulic props. They can be used together with metal hinged top beams and suspension bracket top beams, or can be used as separate points for general mechanization of coal mines. The coal mining face supports the roof, or the end of the comprehensive mechanized coal mining face and other temporary support.
Scope of application
1 DN (06-45) single hydraulic prop Series is available in 18 sizes for coal seams from 0.6 to 4.5 m.
2 The inclined angle of the coal seam is 0-25°, and if the corresponding safety measures are taken, the inclined working face with the inclination angle of 25°-45°can be used.
3 The compressive strength of the coal seam floor should be greater than 28 MPa. Under the condition of softer bottom plate, the principle of maintaining the integrity of the top plate and not affecting the retraction of the strut should be taken. Otherwise, measures such as increasing the bearing area of the strut should be taken.
