What is the working principle of a screw jack? What's the difference between an ordinary hydraulic jack and an ordinary hydraulic jack?
The screw jack is a pure machine, and the two jacks are fundamentally different in principle. Open the relief valve. Press the small piston constantly, and the big piston can shrink back under the action of gravity
Press a small piston with a handle and transfer power by hydraulic oil.The hydraulic jack uses Pascal's principle to retract the nut.
The piston will slowly rise, can not see), lift power transmission by spiral, formed a large thrust (x = thrust pressure area), hydraulic oil pressure acting on the piston in the piston, push upward, in the lower part of the piston, screw nut stop, hydraulic oil through the pipeline (in the case, as with a wrench bolts / pressure, small piston pushes the hydraulic oil, the bolt will be stretched out.
