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 hoist motor, protection class ≥IP155. Stroke control mechanism decimal counter principle, control error of 0.5% stroke. Torque protection control is touched by the worm axial displacement micro switch, to achieve the protection of electrical principles. 3, easy operation and maintenance, enabling on-site and remote control operation. Renovation and maintenance of the measures outlined in the hoist hoist for existing systems and cylinder leakage leakage, using the additional special hydraulic cylinder lock to solve the system leaks and improve hoist safety; they replaced all cylinders seal, and the fuel tank were necessary, proper maintenance, in order to solve the leak problem in the fuel tank. (1) the addition of a hydraulic cylinder lock. Hydraulic locking unit added in each cylinder inlet pipe at the rear wall of the lock unit automatic pilot work. When you want to enhance the gate automatically opens the hydraulic pressure of the oil lock down into the cylinder rod chamber gate hoist, lifting the gate; when the gate is running high to set the working hydraulic system to stop the oil, hydraulic lock automatic locking cylinder rod lower chamber oil path to ensure the cylinder rod under pressure oil chamber is not compromised, hoist system to solve the leak problem; at the same time ensure the pipe network in a non-high-pressure cylinders outside the state, improve the operating environment of the pipe network, At this point, if the pipe network damaged hoist winch, due to the protective effect of hydraulic lock, cylinder rod is not inferior vena hydraulic oil leak, will not decline screw gate hoist, greatly improving the enabled machines and gates reliability and security. (2) measures to deal with leaking tanks. For the previous analysis of the fuel tank leak caused three main reasons, take a variety of actions. 1) Replace the seals: Replace all piston cylinder and piston seals; replace all of the end face of the cylinder stationary seal; sealed in the original, based on the addition of a rear end fixed sealed to prevent rainwater from entering the cylinder to form a cylinder rear cylinder corrosion. 2) the inner wall of the cylinder injury actions: the use of special equipment in the field of all the inner wall of the fuel tank cylinder grinding, the complete elimination of the inner wall of the cylinder pull marks and rust decontamination. The process is a proprietary technology, the need for specialized equipment and appropriate technology, experienced personnel to conduct, improper use can cause the inner wall of the cylinder out of round, such as the formation of irreversible damage to the taper. Another grinding volume control to determine the specific circumstances of each cylinder, the cylinder will cause excessive grinding with the size of the inner diameter of the ultra-poor, grinding amount is too small and does not solve the problem, so the use of the process must be careful. Hoist gate, Wuzhou hoist, rich students provided by the Guangzhou Environmental Protection Engineering Co., rich students. 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!