Transport principle
There is a winding winch for polar rope transportation. One end of the wire rope is wound on the winch drum, and the other end is hung on the mine car. When the drum rotates, the mine car is towed to run. Single drum and single wire rope traction is called single hook transportation. Two wire ropes are wound on two coaxial drums in different directions. This double drum and double wire rope traction is called double hook transportation. When the drum rotates, the two groups of tramcars at the end of two steel ropes run on two tracks, and the transportation capacity is twice that of a single steel rope.
In the above two traction methods, the winch mainly pulls the tramcar upward, and the tramcar gravity belt steel wire rope slides downward, so it is only applicable to the case of large track slope. When the track slope is small or the line has ups and downs, the mine car can't drag the wire rope downhill, and another winch and wire rope are needed for traction when descending, which is called fore-and-aft rope transportation. The maximum inclination angle of polar rope transport track is 25. Because of the low transportation capacity, it is necessary to pick and hang the tramcar manually, so it is only used in inclined tunnels for transporting materials, equipment and personnel in large and medium-sized mines.
transportation equipment
Polar rope transportation equipment, including winch, steel wire rope and container (mine car). According to "Coal Mine Safety Regulations", the main lifting equipment is defined as "lifting device with winch for lifting people and winch with drum diameter exceeding 2 m". Generally, when the drum diameter is less than 2m, it is called winch or small winch, and when the drum diameter is greater than 2m, it is called winch. According to different structures, uses and working principles, transport winches can be divided into dispatching winches and inclined lane transport winches.