Crane

CRANE :- A large machine used for moving heavy objects by suspending them from a projecting arm or beam

Overhead craneEdit

Overhead crane being used in typical machine shop. The hoist is operated via a wired pushbutton station to move system and the load in any directionMain article: Overhead craneAn overhead crane, also known as a bridge crane, is a type of crane where the hook-and-line mechanism runs along a horizontal beam that itself runs along two widely separated rails. Often it is in a long factory building and runs along rails along the building's two long walls. It is similar to a gantry crane. Overhead cranes typically consist of either a single beam or a double beam construction. These can be built using typical steel beams or a more complex box girder type.

Mobile crane: Mobile craneThe most basic type of mobile crane consists of a truss or telescopic boom mounted on a mobile platform — be it on road, rail or water. Common terminology is conventional and hydraulic cranes respectively.

Truck-mounted craneEdit

Developed truck-mounted crane at workTruck-mounted craneA crane mounted on a truck carrier provides the mobility for this type of crane.

DUTIES WHILE WORKING ON THE CRANE  : -
1.While working on the crane the operator  should see that proper lighting is ensured.
2.Before leaving the crane cabin for any purpose the operator must bring all the controllers to the neutral position cut - off the switch in the cabin.
3.Mobile cranes should be parked on hard soil or strong base . This should not be placed near the edge of the pit or excavation.
4.No unauthorized persons are allowed on the crane.
5.No inflamable materials are kept on the crane.
6.Capacity marking as stated above  should be displayed on the crane.
7.At least two winding ropes should always be on the wire rope drum of the crane.

THE CRANE SHOULD NEVER BE PUT INTO OPERATION

1.