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The Working Principle Of Jack

Manhand Equipment Co.,Ltd | Updated: Apr 19, 2017

Jack is divided into mechanical jack and hydraulic Jack Two, the principle of different. In principle, the principle of hydraulic jack is based on Pascal principle, namely: the pressure of the liquid everywhere is consistent, so that in a balanced system, more than the smaller piston imposed on the pressure is smaller, and the large piston exerted pressure is also relatively large, so that the liquid can keep static. So by passing the liquid, you can get different pressures on the different end, so that you can achieve a transformation. The hydraulic jack we often see is the use of this principle to achieve the power of transmission. Mechanical Jack adopts the principle of mechanical, to reciprocating the handle, pulling claw to promote the ratchet clearance rotation, small umbrella gear drive large umbrella gear, lifting the weight screw rotation, so that lifting sleeve to get up or down, and achieve lifting pull function. But not as easy as hydraulic jack.

The basic equations of hydrostatic pressure (p=p0+ ρ gh), the liquid which is placed in the confined vessel, and the pressure p0 changes, as long as the liquid retains its original static state unchanged, the pressure of any point in the liquid will change the same size. This means that the pressure strong applied to the stationary liquid at the same time passes the equivalent to the points in the confined vessel. This is the principle of static pressure transfer or the principle of Pascal. Pascal's law is in fluid mechanics, due to liquid fluidity, the pressure change in a part of the stationary fluid in the enclosed container, the size is transmitted in all directions unchanged. Pascal first elaborated this law. The pressure is equal to the force by dividing the stress area. According to Pascal's law, a certain pressure is exerted on a piston in the hydraulic system, and the same pressure increment will be produced on the other piston. If the area of the second piston is 10 times times the size of the first piston, the force acting on the second piston will increase to 10 times times the first piston and the pressure on the two pistons is still equal. This law is first proposed by the French mathematician, physicist and philosopher Blaise Pasca. This law has a very important application in production technology, and hydraulic machine is an example of Pascal principle. It has a variety of uses, such as hydraulic braking. Pascal also found that the pressure of any point in the stationary fluid is equal, that is, the point is equal to the pressure on all planes passing through it. This fact is also called the Pascal principle.