Vertical hydraulic jacks, hydraulic jack, jack Description: Jack is commonly used in the production of a lifting tool. QYL vertical hydraulic jack is the national stereotypes of new products. Its simple structure, easy operation, small volume Hunan jack Supply, light weight, easy to repair. Widely used in lifting operations facility in warehouses, bridges, docks, transportation construction and other sectors. This product can only upright use, the working environment temperature of -20 degrees Celsius to +45 degrees Celsius Hunan supply jack, should not be used in the acid and corrosive gases. How it works: hydraulic jack is working according to the principles of Pascal's law. It consists of several parts of the fuel tank, two pressure cylinders of different sizes, rocker and close the needle valve and the like. Work Hunan supply jack, lift the small piston oil inhalation of pressure cylinders, when pressed into the big small piston hydraulic pressure cylinder. By controlling the two valves, the small piston for oil pressure is transmitted to the larger piston, the heavy top up. Small piston moves back and forth constantly, you can put the top weight to a certain height. After work, open and close the needle valve, so much pressure cylinder and the oil tank. In this case, if a little pressure on the larger piston, the piston can drop large oil tank back to use: lifting 1: slotted end of the handle, insert the return valve inside, to the right (clockwise ) would return valve tightened. 2: Estimated starting weight, lifting objects determine the center of gravity, select the focal point, correctly placed in the bottom part of the lifting. If necessary, adjust the screw jack to left direction (anti-clockwise) until it touches the lifting objects. 3: the jack handle into the handle casing, the vertical tilt handle, the rod should be a smooth rise Hunan supply jack, lifting heavy objects to the desired height. Decreased 1: the handle out from the handle casing, the handle into the oil return valve slowly to the left-hand direction (counterclockwise) rotation of the handle, loosen the oil return valve. 2: If the load, handle rotation is not too fast, and the return valve release circle is appropriate to decline slowly. Xinyu lifting (FIG), jack stock, Hunan Xinyu jack from the Qingyuan Lifting Limited. Qingyuan Xinyu Crane Limited (xyqz0312.1688.com) is specialized in "chain hoists, lever hoist, electric hoist, multi-functional electric hoist, indoor and outdoor lifting machine" of the enterprise, companies adhering to the "integrity management , the intentions of service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Zhangsong Song.