Many people categorize jacks into three categories: hydraulic jacks, mechanical jacks, and electric jacks. As is well known, the classification of jacks may be based on different prerequisites, working principles, driving methods, or structural forms. Is it correct to classify jacks into these three categories?
Firstly, it can be clearly stated that the classification of jacks into these three categories is incorrect. The reason is simple, as there is no standard prerequisite for classification. They are not distinguished based on their working principles or driving methods. This means that hydraulic jacks and mechanical jacks are two completely different types of jacks, while electric jacks do not demonstrate that they are the third type of working principle, Some people may think that electric power is the third working principle, which is obviously incorrect.
The hydraulic jack adopts the Pascal hydraulic transmission principle, while the mechanical jack utilizes the mutual force between mechanical components, typically the screw transmission principle. The electric jack in the electric jack represents a driving method, which has nothing to do with the working principle. In other words, the electric jack may be a hydraulic jack driven by electricity, or a mechanical jack driven by electricity, You should understand by saying this.
If we really want to classify these types of jacks, we can choose to do so. Jacks can be divided into hydraulic jacks, mechanical jacks, and pneumatic jacks based on their different working principles. Here, pneumatic jacks are used instead of electric jacks, and pneumatic is another working principle. Of course, it can also be divided into electric jacks and manual jacks according to the different driving methods, which are clearly different driving methods. This is the correct classification method for jacks.
