coal cutter的意思|示意

English Word Coal Cutter

Coal cutter is a type of machine used in coal mining to cut coal from the coal face. It is used for two purposes: to remove coal from the seam where it has been broken down by drilling and blasting, and to cut the coal face into various thicknesses for removal by conveyor systems.

The first use of coal cutters was in the 19th century. The earliest designs were hand-held picks, the earliest mechanical cutters being single drum machines that could rotate around different axes. Later designs used compressed air to power small hammers and other cutting tools, which improved cutting speed and efficiency.

Modern coal cutters are much more powerful and precise cutting tools, powered by electric or hydraulic motors. They can cut a wide range of thicknesses, and are able to move along a mining face in both directions. The cutting blades are much more durable than those used in earlier designs.

Coal cutters are used in a variety of applications, from the large-scale mining operations to the smaller-scale local mining operations. In mining operations, coal cutters are used to cut coal from the face in order to reduce the amount of labor needed to remove the coal. They are also used in strip mining operations, where they are used to cut large areas of coal seam.

Coal cutters are a vital component of the coal mining industry, and are an essential tool in the process of extracting coal. They have been used for centuries, and with modern advances, they have become an even more important tool in the process.