ABSTRACT
The lifting and repositioning of a load from a crane vessel induces large disturbing forces and moments that need to be compensated for so that the crane vessel's mean attitude in heel or trim remains close to level. This paper describes the design and operation of a pneumatic crane compensation system that is used to counteract crane disturbing forces. This project deals with the fabrication of pneumatic mobile crane. The project work is concerned with the fabrication of the portable jib crane. This machine is very useful for lifting and transporting heavy jobs upto two tons for all types of jobs such as automobile repairs and service shops of central workshops, production industries, material handling units

CHAPTER ONE
1.0                                          INTRODUCTION
Pneumatic crane is a type of machine, generally equipped with a hoist rope, wire ropes or chains, and sheaves, that can be used both to lift and lower materials and to move them horizontally. It is mainly used for lifting heavy things and transporting them to other places. It uses one or more simple machines to create mechanical advantage and thus move loads beyond the normal capability of a human. Cranes are commonly employed in the transport industry for the loading and unloading of freight, in the construction industry for the movement of materials and in the manufacturing industry for the assembling of heavy equipment.
Cranes exist in an enormous variety of forms – each tailored to a specific use. Sizes range from the smallest jib cranes, used inside workshops, to the tallest tower cranes, used for constructing high buildings. Mini-cranes are also used for constructing high buildings, in order to facilitate constructions by reaching tight spaces. Finally, we can find larger floating cranes, generally used to build oil rigs and salvage sunken ships.
The very essence of our economic life and growth is dependent in a great part upon the continued improvement and development of the electronic and mechanical fields. To aid these fields, we have pneumatic mobile crane, Mechanical type, which can be widely used to lift the products like less weight or heavy weigh blocks, machines, workpieces and etc. Extreme care should be taken while lifting the load in the jib crane layout. The movable (or) mobile type jib Crane is used to lift any same or identical workpieces with OF THE PROJECT mechanical arrangement in easy way.

1.1                         AIM/OBJECTIVE OF THE PROJECT
The aim of this project work is to acquire practical knowledge in the field of material handling equipment. The project work is concerned with the fabrication of the portable jib crane. This machine is very useful for lifting and transporting heavy jobs up to two tons for all types of jobs such as automobile repairs and service shops of central workshops, production industries, material handling units etc.

1.2                          SIGNIFICANCE OF THE PROJECT
Its advantage over conventional systems are listed below
1. Compact:
-Because of high speed and pressure capabilities they have a very small weight to power output ratio.
2. Predictable performance:
-Losses are minimum due to less number of moving parts and so gives expected performance.
3. Noise vibration control:
-Due to elegant and simple control systems, it does silent operation and no vibration is produced.
4. Longer life
5. Flexibility
6. Efficient and dependable.
7. Simple installation.
8. Easy maintenance
1.3                            LIMITATION OF THE PROJECT

1. The life of the parts, like seals, packing and gaskets etc., are very short. But they are
essential to prevent leakage.
2. Cost of this system becomes costlier.

1.4                                      PROJECT PLANNING
Before starting any project, its planning is done; planning is a very important task and should be taken up with great care, as the efficiency of the whole project depends largely upon the planning. While planning the project each and every detail should be worked out in anticipation and all the relative provisions should be carefully considered in advance. Project planning consists of the following steps.

1.5                                      PROJECT CAPACITY

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