In our lives, we don’t encounter hydraulic jacks very often. Generally, jacks are used for emergency rescue when heavy items cannot be moved. Jacks are divided into screw type, rack type and hydraulic type. These three types are common jacks, so why can these hydraulic jacks easily pull heavy objects? Why is it so powerful? This question also needs to be answered with scientific knowledge (zhī shí). Hydraulic jack is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swing motion). It has simple structure and reliable work.
When the tires of a large truck need to be replaced, it is impossible to lift the entire truck with people's strength and then replace the tires. Instead, hydraulic jacks are needed to move the tiresJack up, and then workers work and repair under the car, this is the way we most commonly see the use of jacks, that is to say, with the help of welding car jack, we can pull heavy objects. In addition to being used individually, hydraulic jacks can also be used in combination with two or more or with other mechanisms.
To complete special functions. The hydraulic cylinder is simple in structure and reliable in operation, and has been widely used in the hydraulic system of machine tools. Hydraulic jack refers to a light and small lifting device that uses a rigid lifting piece as a working device to push heavy objects in a small stroke through the top bracket or bottom bracket.
Under the heavy object, the effect of saving effort can be achieved through constant pressing. The heavy object can also be lifted at the other end of the long handle, which can be said to be a kind of transmission and superposition of force.
The welding car jack why is so powerful, mainly because of its principle and structure. First of all, the principle of the jack is very abstract, that is, the principle of leverage. The rack-type and screw jacks are made by this principle. The internal structure design is very simple. The long handle in the hand will be very long.
However, these two types of hydraulic jacks do not save effort for the user, but require multiple vigorous superpositions to lift the heavy objects, which is much labor-saving compared to directly lifting the heavy objects. The hydraulic jack is the best to use.
This type of hydraulic jack is considered the most powerful. The principle it uses is not a lever, but a change in hydraulic pressure. The scientific explanation of this principle is called Pascal.