The side-crank screw hoist is a mechanical device that operates gates through lateral cranking, primarily used for precise regulation of water flow in hydraulic engineering. Its core structure includes a support frame, gear set, pressure bearing, screw rod, and hand crank, achieving directional speed change and lightweight operation via a worm gear speed reduction mechanism. ?
Structure and Working Principle
Composed of components such as the housing, cover, support frame, screw rod, and hand crank, it drives the screw rod to lift or lower through manual cranking of the handle, thereby controlling the opening and closing of the gate. The lateral cranking design enables precise adjustment of water flow or water level, making it suitable for areas without power supply or in complex terrains. ?
Applicable Scenarios
Suitable for hydraulic and hydropower projects, municipal construction, agricultural water conservancy, and power-deficient mountainous regions. It supports hoisting capacities ranging from 0.3 to 5 tons and is equipped with anti-theft locking devices and a dual limit protection system to ensure operational safety. ?
Installation and Maintenance
Installation requires ensuring the base levelness is ≥90%, with the vertical deviation of the screw rod axis from the gate platform’s horizontal plane not exceeding 3mm. Debugging involves no-load and load tests to ensure smooth and noiseless operation. Routine maintenance includes regular checks of lubrication status, cleaning of oil residue, and tightening of bolts. On-site supervision is necessary during electric operation.