Drive for lorry side wall tarpaulin - has cable, chain, or toothed belt guided by sprocket etc. for winding shaft rotation

摘要

The lorry side wall tarpaulin (2) is attached to a number of horizontal bars (3, 4) which slide in vertical guides at each end of the vehicle. The tarpaulin is raised or lowered by an endless chain, or cable (5), which is attached to the lowest bar. The chain etc. passes around an upper drive sprocket, or pulley (9) and around a lower guide sprocket, or (12). The drive sprocket etc is mounted pulley a shaft, driven by an endless chain (7) which is actuated by a pneumatic or hydraulic linear drive (10). ADVANTAGE - Low-cost design, and reliable operation.