China National Coal Group Special Equipment Co., Ltd. carried out the renovation of 5 units of 200 – ton equipment.

This equipment is an old product from the 1970s. Before the renovation, the control console was still using a product from Jianhuan Company manufactured in 1982. The renovation of the electrical part includes the driver’s cab, cable reel, brake, overload device, and safety device. Each mechanism uses the conventional method of cutting resistance for speed regulation, and the control system adopts the OMRON series PLC.

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