Design, Construction and Onstruction and Performance Test of a Remote Controlled Scissor Jack

Abstract

A Scissor Jack is a mechanical device used to easily lift a vehicle off the ground, to gain access to sections underneath vehicles or to change the wheel. The most important fact of a jack is that it gives the user a mechanical advantage by changing the rotational force on power screw into linear motion, allowing user to lift a heavy car to the required height. It is called a scissor jack as the structure consists of diagonal metal components that expand and contract in the same way as a pair of scissors. In this project an attempt has been made to design and fabricate a power scissor jack to lift and support a load of 1ton, for typical use in Four Wheeler. This thesis relates to design modification of crank-operated scissor jack which is generally used for lifting light motor vehicles (L.M.V) during maintenance. This project is focused on designing and finding various stresses and expected a life of various parts of scissor jack like power screw, base plate, etc. With the increasing levels of technology, the efforts are being put to produce any kind of work that has been continuously decreasing. The efforts required in achieving the desired output can be effectively and economically be decreased by the implementation of better designs. Power screws are used to convert rotary motion into reciprocating motion. An object lifting jack is an example of a power screw in which a small force applied in a horizontal plane is used to raise or lower a large load. In this fabricated model, an electric motor will be integrated with the object lifting jack and the electricity needed for the operation.