Cranes are lifting devices that are either stationary or mobile, and can lift materials above and beyond the capability of 2 workers. They can also be powered to increase their lifting abilities.
Note: Cranes provide more flexibility in movement than conveyors.
The major types of cranes include the following:
1) Jib crane
2) Bridge crane
3) Gantry crane
4) Stacker crane
Let us now go into details of 3 of the 4 different kinds of cranes.
1) Jib cranes
What? Jib cranes consist of a hoist-type lifting device mounted on a horizontal boom (jib).
Common configurations of the jib crane include:
(a) Pillar support - The jib is attached to a self-supporting floor mounted or floor-to-ceiling mounted mast
(b) Mast support - The jib is mounted on a mast which is supported on top and bottom supports and pivots.
(c) Bracket - The jib is attached to the wall or column by brackets.
(d) Walking - The jib is mounted on heavy undercarriages which may move back and forth on rails in the floor or floor and ceiling.
(e) Interlocking-A bracket crane designed to extend the travel of a monorail hoist by connecting the ends of adjacent jibs.
2) Gantry Crane
What? A gantry crane consists of a hoisting device that rides on a horizontal beam connected to legs with wheels attached to the bottom. Gantry cranes can be used either indoors or outdoors and can be pendant or radio controlled.
Variations are possible when one of the legs is replaced by a runway attached to the building or other fixed object. Gantry cranes are more often used outdoors because of the support legs.
3) Bridge Cranes
What? Bridge cranes are mounted on tracks that are located on opposite walls of the facility. The movement consists of horizontal travel along the length of the runway, horizontal movement across the width of the bridge, and vertical movement provided by the hoist. Areas of Application - Bridge cranes are best used in low to medium volume activities for lifting large, heavy, or awkward items.
Advantage(s) - The advantages of bridge cranes include no interference with the work on the floor, reduced aisle space requirements, easy access to most areas within the lifting bay, and extension to areas outside the building.
2 comments:
Nice post, its really very useful for me, Jib cranes are a type in which there is a horizontal portion, known as a jib or a boom that supports a hoist, which is movable. Thanks for sharing.
salvia
Nice blog. The crane architecture is very crucial part of crane development and overall industrial development depend on it. We also offer high quality cranes & supply them to various sectors.
EOT Crane Manufacturer in India
Post a Comment