Table of Contents
What is a double girder overhead crane?
A double girder overhead crane is a lifting solution designed to carry medium and heavy duty loads. By using two adjacently positioned beams, double girder cranes offer improved support for the goods being handled, allowing the movement of larger capacities.
What is a double girder?
A double girder crane will have two bridge beams, and the hoist trolley travels on rails, usually attached to the tops of the crane girder.
What are the single fall and double fall of a crane wire?
In single fall mode, the crane’s radius can cover the entire deck, with up to 300- tonne load, in double fall mode, the crane will be able to install a 580-tonne module to 2000m water depth, covering a 29m radius and lower to 3000m, due to having 6000m of hoist wire.
What is a overhead bridge?
overhead bridge means any structure carrying pedestrian, highway, or railway traffic that spans over all or a portion of the railway right of way.
What is a double reeved hoist?
Double-reeved hoists use two wire ropes on one drum, wrapping and unwrapping from the drum at the same time. Because the double-reeved hoist has two wire ropes that move toward or away from the center of the drum at the same rate, the hook stays centered on the drum and associated horizontal hook drift is eliminated.
What is double fall crane?
In double fall mode, the crane also has a hook system and wire handling system to ensure twisting is prevented. In triple fall, the main hoist capacities is up to 900- tonne, with 21m radius.
What is EOT crane and types?
Electric overhead travelling crane or EOT crane is one of the most common types of overhead crane, or called bridge cranes, which consist of parallel runways with a travelling bridge spanning the gap.
What is the purpose of a overhead crane?
To move extremely heavy or bulky loads through the overhead space in a facility, instead of through aisles or on the floor, an overhead crane (also called an industrial crane, crane, or overhead traveling crane is a machine that lifts, lowers and moves a load horizontally.
How do overhead cranes work?
An overhead travelling crane has an end truck from which a horizontal girder connects. The girder, in turn, supports a bridge beam that is responsible for the movement of the crane. A hoist attached to the beam moves in different directions, according to need and a hook is attached to the end of it to lift the load.