The dual-mode (electric/manual) hoist is a hydraulic machinery device that combines both electric and manual operation functions. It is primarily used to control the lifting and lowering of gates, weir gates, and other equipment, and is widely applied in fields such as water conservancy and hydropower, agricultural irrigation, and wastewater treatment. Its core features are as follows:
1. Function and Structure
Dual-mode Operation
Electric mode: Driven by a motor to operate the screw or hoisting mechanism for rapid opening and closing, suitable for routine operations.
Manual mode: Equipped with a hand crank or handwheel, allowing manual operation during power outages or emergencies to ensure reliability.
Core Components
Screw-type: Utilizes worm gear speed reduction, with nut rotation driving the screw to lift or lower, featuring an automatic locking function.
Hoist-type: Uses wire rope to牽引 (operate) the gate, suitable for large-span or heavy-duty gates.
Protection design: Motor protection rating ≥ IP155, with some models equipped with explosion-proof devices.
2. Technical Parameters
Lifting capacity range: 0.5T to 60T (special models can reach up to 650T).
Lifting point type: Single or double lifting points, with customizable center distance for double points (1.8-12 meters).
Limit protection: Equipped with travel limit switches and torque protection, with an error margin ≤ 3%.
3. Application Scenarios
Hydraulic engineering: Flow control for reservoir gates and river embankments.
Agricultural irrigation: Precise regulation of channel gates.
Wastewater treatment: Management of weir gates and sludge discharge valves.
Core Advantages
Dual-mode drive: Can be operated electrically with power supply or manually via a hand crank;
Self-locking function: The gate can be stopped at any position;
High reliability: Adapts to complex outdoor environments with low maintenance costs.
Applicable Scenarios
Mainly used for controlling inlet/outlet gates in hydraulic facilities such as reservoirs, dams, channels, culverts, and pipelines. It supports various topographic environments including plains and mountainous areas, covering applications such as farmland irrigation, aquaculture, wastewater treatment, and hydropower stations.