Hoist

A hoist is a device used for vertically lifting materials. Its operating principle involves using the hoist's transmission mechanism to scoop materials from the bottom storage area, then transporting them to the top via a conveyor belt or chain, and finally discharging the materials into a receiving hopper via a flipping mechanism. The transmission mechanisms of hoists primarily consist of two types: belt drive and chain drive.

Belt-driven elevator: Belt-driven elevators typically use rubber belts mounted on drive pulleys at the bottom or top and redirecting pulleys at the top and bottom. The advantages of this type of elevator include stable belt tension, smooth operation, and low noise levels. However, due to significant wear on the rubber belts, regular replacement is required. Additionally, belt-driven elevators have relatively limited lifting capacity and are generally suited for small-scale material handling.

Chain-driven hoists: Chain-driven hoists are generally equipped with two parallel drive chains and a pair of drive sprockets at the top or bottom. The advantages of this type of hoist include minimal wear on the drive chains, a long service life, and a larger lifting capacity. However, chain-driven hoists produce higher operational noise levels, and the tension of the drive chains fluctuates significantly, requiring regular adjustments. Chain-driven hoists are suitable for large-scale material handling, such as minerals and coal.