The hand-operated screw hoist is a mechanical device used for manually operating plane gates, primarily applied in small-scale hydraulic engineering, farmland irrigation, river regulation, and scenarios without power supply. Its core features include a lightweight and flexible operation method, a self-locking function that allows the gate to stop at any position, and an anti-theft water design. ?
Structural Composition
Mainly composed of components such as the support frame, machine cover, screw rod, hand crank, and gear set. It utilizes a worm gear speed reduction mechanism to achieve directional speed change, equipped with an anti-theft lock device and a dual limit protection system. ?
Applicable Scenarios
Suitable for gate control with hoisting force ranging from 0.3 to 100 tons, supporting manual operation or dual manual-electric models (such as the QD type), and adaptable to various terrain requirements including mountainous and plain areas. ?
Installation Requirements
Installation must ensure a base levelness of ≥90% and a vertical deviation of the screw axis ≤3mm. During debugging, no-load and load tests must be conducted, and upper and lower travel switches should be set. ?
Maintenance
Regular inspection of lubrication status, cleaning of oil dirt, and tightening of bolts are required. During electric operation, on-site supervision is necessary.