When the hydraulic support hose in coal mine is disassembled and replaced in the working face, attention should be paid to the roof caving, and the protection of the person and equipment should be done well. When replacing columns, front beam jacks, various control valves and other components, the top beam should be supported by temporary pillars before being carried out.

2. The hydraulic components and piping system on the hydraulic support hose of coal mine shall not be repaired and replaced under pressure. They must be carried out after unloading, and debris shall be strictly prevented from entering during disassembly. Hydraulic support hose for coal mines

3. In the dismantling and maintenance of coal mine hydraulic support, appropriate special tools must be selected, and no hard disruption is allowed, especially the piston appearance of all kinds of hydraulic cylinders, guide sleeves, valve cores of all kinds of instrument valves, sealing surfaces, joints and external threads, etc., to prevent damage and prevent the inconvenience of adding maintenance and inspection. The structural parts of the dismantled hydraulic parts should be marked and measured to the necessary size, and placed in the appropriate position. Small parts removed, such as sealing rings, cotter pins and sealing rings, should be put into the electrician's kit to prevent loss.

4. Various hydraulic cylinders, valves and other hydraulic components used on the hose of hydraulic support in coal mine are generally not allowed to be disassembled and assembled underground. If problems are found and cannot be continued to be used, the whole part must be replaced and sent to the well for repair. In the process of underground disassembly and handling, all kinds of hydraulic cylinders should first shrink to the low position, and the liquid in the cylinder body should be released, so as not to damage the piston rod surface in the process of handling. Hydraulic support hose for coal mines

5. All kinds of plastic hoses, vertical rods, hydraulic jacks and all kinds of valve bodies on the coal mine hydraulic support must be protected by appropriate plugging cover, and pay attention to avoid the loss of blocking head in placing and loading and unloading links.

6. After the maintenance of hydraulic support hose in coal mine, the maintenance statistics should be done well, involving: information of maintenance, consumption of raw materials and spare parts, time required for maintenance, quality inspection status and technical personnel involved in maintenance and inspection. Convenient accumulation of basic information, in-depth analysis of the situation, for the future repair advantages. After maintenance of the support frame, the whole frame should also be tested. Hydraulic support hose for coal mines

7. Coal mine hydraulic support hose placement and spare parts reserve to have a plan, set up full-time personnel to bear storage, improve anti-pollution, anti-rust and anti-freezing measures. The support frame and parts should be placed in the storage as far as possible. The support frame placed outdoors on the road to be repaired or temporarily not well should be collected in the determined place for storage, and the emulsion in the hydraulic cylinder and various valves of the support frame should be put out. If necessary, antifreeze should be poured into it to prevent the hydraulic parts from freezing in winter.

8. The plastic hose of the coal mine hydraulic support should be coiled or flat bundled in storage, and the bending radius of the coil should not be less than 200-500mm. Rubber products and nylon parts should avoid direct sunlight, rain and snow penetration, placed temperature should be guaranteed in -15--+40°C, placed air humidity should be in 50%--80%, strictly prohibited with acid and alkaline oil and solvents and other organic matter contact, and avoid the development of hot equipment 1 meters away.