Hoist hoist for various large-scale water supply and drainage, water conservancy and hydropower projects. Is used to control all types of large and medium-sized iron and steel sluice gate opening and closing movements achieve the purpose. Structural features a hoist including motor, hoist, racks, shields and other components; using three deceleration mode, with spiral auxiliary transmission output torque greater. Hoist supporting steel overcome civil irregularities, in order to reduce overall noise and vibration. 2, using outdoor long duty motor, protection class ≥IP155. Stroke control mechanism decimal counter principle, control error of 0.5% stroke. Torque protection control is touched by the axial displacement of the micro-switch worm screw hoist, to achieve the protection of electrical principles. 3, easy operation and maintenance, enabling on-site and remote control operation. Hydraulic hoist works and the role of the principle of hydraulic hoist is used to transfer energy to let the gate run by the pressure of the liquid, thereby controlling the gate to open or close a special hoist. It consists of two systems, namely the hydraulic drive system and electrical control systems. And consists of five parts, namely the group consisting of hydraulic pumps, hydraulic valve, hydraulic cylinders, tanks and accessories, electrical cabinets and console five parts. Its working principle is: the original motivation of the mechanical pump energy into a liquid pressure energy through oil pipelines or hydraulic valve into the cylinder among the cylinders and the piston rod through the fluid pressure energy into mechanical energy hoist screw hoist, allowing the gate to open or close and so on. LQ type screw hoist a gate (weir gates, valves) and other up and down movement or rotation of the weir gate movement (rotation weir gate level adjustment valve 90-degree rotation opening and closing) of the implementing agency. Its compact structure, stable and steady movement, regaling safety device is sensitive and reliable, and the appearance hoist, cost-effective. Screw hoist by supporting power source into a manual hoist and electric hoist (LQD); hanging points divided by the number of the number of single hanging point into a single hanging point and double hanging point; screw hoist models by type Rod is divided into two kinds of dark and bright rod; manual hoist hand wheel is divided into hoist (LQS), side shake hoist (LQC) and closed flat to hoist want (LQPBO). Ming is to rely on the rotating rod hoist hoist nut, screw lift, thus boosting the brake lever movements, to achieve the gate opening and closing, dark hoist is to rely on the rotating rod hoist nut, making installation in or on the gate nut boom driven lift gate, the gate opening and closing to achieve. Screw hoist, hoist Shijiazhuang, Guangzhou Fu Fu students by students Environmental Engineering Limited. Environmental Protection Engineering Co., Ltd. Guangzhou Fu students (www.fushengyuan.com) strong, credible, in Guangzhou environmental monitoring equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the rich into the brilliant students and you work for a better future!