Hand-operated hoist (also known as hand-operated screw hoist) is a mechanical device used for manually operating plane gates, primarily applied in small-scale hydraulic projects, farmland irrigation, river regulation, and scenarios without power supply. Its core features are as follows:
Structural Composition
Mainly consists of support frame, machine cover, housing, large/small gears, pressure bearing, screw rod, hand crank, and other components, utilizing a worm gear speed reduction mechanism to achieve flexible opening and closing. ?
Functional Features
?Manual Operation?: Rotating the screw rod via the hand crank controls the gate’s lifting, offering lightweight and flexible operation. ?
Self-locking Function?: The gate can be held at any position, equipped with anti-theft lock devices and a dual limit protection system. ?
Application Range?: Hoisting capacity ranges from 0.3 to 100 tons, with customization support for 3-60 ton specifications. ?
Direction Change and Speed Variation?: Easy cranking, flexible operation, and quick direction and speed changes. ?
Installation Requirements
Base levelness must be ≥90%, with vertical deviation of the screw axis ≤3mm. ?
Debugging requires no-load testing and setting of upper/lower travel switches to ensure safe operation. ?
Typical Applications
Widely used in water conservancy, agricultural water management, sewage treatment, and other fields, compliant with technical standards of the Ministry of Water Resources, and adaptable to various terrains such as mountainous and plain areas.