Fixed opening and closing machines can be divided into screw type, winch type, and hydraulic type. These three types of opening and closing machines require pre embedded foundation bolts during installation. Small and single frame hoists can be lifted as a whole and connected to gates after debugging; Multiple double lifting point hoists are usually disassembled and transported to the site. The frame is first lifted and adjusted, and then other components are assembled and connected to the gate after debugging; The hydraulic hoist first lifts the oil cylinder onto the installed frame for adjustment, while installing the oil pump, pipeline, and valve. After debugging, it is connected to the gate.
The QPQ double lifting point hoist is mainly used for opening and closing flat gates in water conservancy and hydropower projects. It is used to close the discharge, inlet, and tailwater ports, adjust power generation, discharge floodwaters, and release ships. When the water pipeline or turbine unit needs maintenance, the inlet gate can also be closed for maintenance. This series of hoists is powered by an electric motor and can be equipped with reverse hand cranking for small and medium capacity specifications, making it easy to manually open and close the gate. This product is widely used in irrigation and drainage, hydropower stations, reservoirs, etc. Used in water conservancy projects such as river management, aquaculture, environmental protection, and sewage treatment. The fixed double lifting point hoisting hoist is composed of two single hoisting hoists (single machines) connected by connecting rods. When the power is started, the hoist starts hoisting work simultaneously, which is very synchronous and stable.