Vertical hydraulic jack, jack oil pressure, jack

Product description: jack is a commonly used lifting tools in production. QYL type vertical hydraulic jack is a new series of national stereotyped products. It is simple in construction, easy to operate, small in size, light in weight, easy to repair. It is widely used in lifting operation of factory's annual warehouse, bridge, wharf, transportation and construction engineering. This product can only be used upright, the working environment temperature is -20 c to +45 c, and should not be used in acid, alkali and corrosive gases.

Working principle:

Hydraulic jacks work on the basis of PASCAL's law. It consists of a fuel tank, two pressure cylinders of different sizes, a rocker and a shut-off needle valve. While working, lift the small piston to suck the oil into the low pressure cylinder, and press the small piston down into the high pressure cylinder. Controlled by two valves, the pressure of the smaller piston on the oil is transferred to the larger piston and the weight is lifted. Small pistons move back and forth continuously to lift heavy objects to a certain height. After work, open and close the needle valve to connect the oil cylinder and oil tank. At this time, as long as a little pressure on the big piston, the big piston can fall, oil back to the tank