180 0 TURNING OF CAR BY USING ELECTRO - PNEUMATIC SYSTEM

A jack is mechanical device used to lift heavy loads. Jacks em ploy a screw thread or pneumatic cylinder to apply very high linear forces. The m ost common form is a car jack . Car jacks usually Use pneumatic System for lifting the vehicle . Mechanical jacks are usually rated for a maximum lifting capacity. Scissor jacks are simple mechanisms used to drive large loads short distances and this jack can lift a vehicle that is several amount of weight. Most scissor jacks are similar in design, consisting of four main members driven by a power screw .A scissor jack is operated simply by turning a small crank that is inserted into one end of the scissor jack. Design of this Scissor jack is “Z” type. Main part of scissor jack is power screw. The end into a ring hole mounted on the end of the screw. Power screw in a scissor jack is the foundation of whole mechanism of scissor jack. The screw acts like a gear mechanism. Just by turning this screw thread, the scissor jack can lift a vehicle that is several thousand weights.