Technical requirements and standards for roadway repair machines used in coal mines（haoyun）

The editor of Shandong Haoyun Heavy Industry Machinery Co., Ltd. has made the following content regarding the technical requirements and standards for tunnel repair machines used in coal mines:

Before carrying out installation work, Haoyun Heavy Industry must carefully inspect the technical data of the equipment to ensure that it meets the working voltage and capacity requirements of the controlled motor. At the same time, it should be ensured that all components are intact and free from missing or damaged parts.

2. The introduction and exit parts of the cable require the use of rubber sealing rings, metal sealing rings, compression nuts or compression flanges and other components in the wiring device to ensure that the cable is firmly compressed to meet explosion-proof standards. In addition, it is necessary to tighten the cable anti loosening device to prevent the cable from loosening during use.
3. For unused wiring ports, rubber sealing rings, metal sealing rings, and metal blocking plates must be used for tight sealing to prevent external gases or liquids from entering the equipment and affecting its normal operation.

During use and maintenance, each explosion-proof surface should maintain its original roughness to avoid collisions, scratches, or corrosion. Any form of damage may affect the explosion-proof performance, so it is necessary to strictly follow the operating procedures to ensure the integrity of the explosion-proof surface.

During the transportation process, the equipment should be protected from strong vibrations and rolling or rough handling is strictly prohibited. During the maintenance and repair process of Haoyun Heavy Industry’s equipment, it is strictly prohibited to open the cover with electricity to prevent the risk of electric shock. At the same time, attention should also be paid to avoiding collision or scratching of the explosion-proof surface to avoid affecting its explosion-proof performance.