The mine roof support adopts the new coal mining machinery and the bendable conveyer, which provides the conditions for the general mechanization of coal mining, and is the necessary supporting equipment for the general mining and the new mining technology. The mine roof support can realize the cantilever support, so that there is a large unsupported space between the coal wall and the pillar, which provides the conditions for realizing the general mechanization of coal mining. The mine roof support is not only suitable for the mining face, but also the necessary supporting equipment for the roof support of the general mining face.
We should not only use mine roof support for protection, but also pay attention to the protection measures of electric shock.
1. Avoid contact with live parts, screen protection and safety spacing are the most common safety measures.
2. Insulation. This is the basic protection against direct electric shock. However, it is necessary to pay attention to the insulation performance of the insulation material and equipment voltage, load flow, surrounding environment, operating conditions consistent.
3. Screen protection. That is, the shield, shield, cover, and box brake are used to isolate the charged body from the outside world. This kind of screen protection is used for the occasions where the insulation of electrical equipment is not convenient or the insulation is not enough to ensure the safety.
