Features and Working Principle of a Scissor Jack:
Simple Structure: Composed of a screw and two crossed arms, usually with a handle or crank for turning the screw.
Easy Operation: By rotating the handle, the screw drives the arms to extend or retract, thus raising or lowering the jack's height.
Good Stability: The scissor-like design provides good stability when lifting objects.
Wide Applicability: Commonly used for changing tires and performing simple repairs on small to medium-sized vehicles.
Portable and Compact: Its compact design allows for easy storage in a vehicle, making it convenient for roadside emergencies.