Product Description: jack is used in the production of a lifting tool. QYL type vertical oil pressure jack is a new series of products of the country. Its simple structure, convenient operation, small size, light weight, easy to repair. Widely used in the factory warehouse, bridge, dock, transportation construction engineering and other departments of the lifting operation. Using this product can only be upright, the working environment temperature for -20 degrees Celsius to +45 degrees Celsius , not in the acid-base and corrosive gas use.

working principle:

hydraulic jack is working according to the principle of Pascal's law. It consists of a tank, two pressure cylinders of different sizes, rocker arms and close the needle valve consists of several parts. Work, lift the small piston oil inhalation of small pressure cylinders, oil pressure when a small piston under pressure in pressure tank. Through the two valves of the control, the small piston of oil pressure to the piston and lift the top up. Small piston reciprocating motion constantly, you can lift the top to a certain height. After work, open close needle valve, high pressure cylinders and tanks connected. At this time, as long as the slight pressure on the piston, piston can fall, oil is returned to the fuel tank to