Cut the jack
The jacks are divided into mechanical jacks and hydraulic jacks, and the clipped jacks are called jacks, which are easy and fast, because the main automobile factories in the country differ in their product patterns。
I. Rationale
1. Hydraulic jacks are based on the pascal principle, i. E. The pressure of liquids is consistent everywhere, so that, in a balanced system, pressure is lower than that exerted on smaller pistons and pressure is greater on larger pistons, so that the liquids remain static. So through the transfer of liquids, different pressures can be obtained at different ends, so that a transformation can be achieved. The hydraulic jack that we're used to use to deliver power。
2. The mechanical jack uses mechanical principles, which used to be the handle, where the claws were pulled to push back the edges of the thorn wheel, and the small parasol gears drive the parasol gears, which rotates the lifting screws, thus enabling the lift and drop drums to rise or fall to the point of gravity pull. But not as easy as hydraulic jacks。