Essay On Mechanical Jack

A jack is a mechanical device used as lifting device to lift heavy loads or to apply great forces. A mechanical jack employs a screw thread for lifting heavy equipment. A hydraulic jack use hydraulic power. The most common form is a car jack, floor jack which lifts vehicles so, that maintenance can be performed. Jacks are usually rated for a maximum lifting capacity (for example, 1.5 tons or 3 tons). Industrial jacks can be rated for many tons of load.

The jack shown at the right is made for a modern vehicle and the notch fits into a hard point on a uni body.

1.1.1 HYDRAULIC JACK

It is a short stroke hydraulic lift which is fed from hand pump. The hydraulic jack may be portable. This is extensively used for lifting automobiles usually to facilitate and repair. And for replacing the punctured wheels. The hydraulic jack is perhaps one of the simplest forms of a fluid power

1.5 PLANE OF WORK:-

The plan of the work is divided in to various steps such as:

1) System need

2) Finding the problem

3) Execution of system

4) Specification of system

5) Choice of material

First of all we find the problem situated with car or some other vehicle or repairing them in most the cases the person related with that have to expense more physical effort and time. to reduce this problem we thought to implement in built hydraulic jack with the vehicle

1.6 MATERIALS / TOOLS TO BE REQUIRED:-

1.6.1 Double acting hydraulic jack

Fig 1.3 Hydraulic jack

The Double-Acting Cylinder have ports at both the head and rod ends. The piston is moved by pumping oil into the head which moves the piston to extend a rod. Any oil in the rod end is pushed out into a reservoir. To retract the rod, the oil flow at both ends is reversed.

1.6.2 Motor

Fig 1.6 Motor

We are using 1 hp motor for drive the pump by using v-belt. Which is AC supply based motor. And in this model we using washing machine motor.

1.6.3 Gear