Working Principle Of Jack

Jacks are divided into mechanical jacks and hydraulic jacks, etc., with different principles. In principle, the most basic principle based on hydraulic transmission is Pascal's law, that is to say, the pressure across the liquid is the same. In this way, in a balanced system, the pressure exerted on the smaller piston is smaller, and the pressure exerted on the larger piston is also larger, so that the liquid can be kept still. Therefore, through the transfer of liquid, different pressures on different ends can be obtained, and a transformation can be achieved. The hydraulic jack commonly seen by people uses this principle to achieve force transmission. The screw jack pulls the handle back and forth, pulling the pawl to push the ratchet gap to rotate, and the small bevel gear drives the large bevel gear to rotate the lifting screw, so that the lifting sleeve can be lifted or lowered to achieve the function of lifting pulling force, but not as good as The hydraulic jack is simple.