The hand-operated screw hoist is a mechanical device that controls the opening and closing of plane gates through manual operation, utilizing the screw transmission principle to achieve gate lifting and lowering. It is widely used in water conservancy, agricultural irrigation, and other fields.
Structural Composition
Mainly consists of a support frame, machine cover, machine housing, screw rod, nut, gear set, thrust bearing, and hand crank, equipped with anti-theft devices and limit systems.
Functional Features
Manual Operation: Driven by a hand crank to rotate the screw rod, enabling gate lifting and lowering, suitable for environments without power supply.
Self-Locking Function: The gate can stop and self-lock at any position, ensuring safety.
Fast Direction Change and Speed Variation: Utilizes a worm gear speed reduction mechanism, making operation lightweight and flexible.
Adaptability Range: Hoisting capacity ranges from 3 tons to 100 tons, with support for customized production.
Installation Requirements
The foundation plane must be level (deviation ≤ ±3mm), and the screw axis must be perpendicular to the horizontal plane of the gate platform.
Before installation, check the completeness of components, ensure sufficient lubrication, and secure bolt fastenings.
Debugging requires no-load and load tests to confirm smooth operation without abnormal noises.