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 the span of the crane?
The crane span is the measured center-to-center distance between the runway beams. One of the most important measurements you can provide during an overhead crane consultation is the crane’s span.
What is a girder on a hoist?
A type of overhead crane, or bridge crane, which consists of a single girder runway equipped with a traveling bridge between supported points within a structure. A hoist, the lifting component of a crane, travels along the bridge.
What is a girder bridge crane?
A Single Girder Bridge Crane is a type of overhead crane. It feature end trucks that operate on fixed rails attached to the top flange of runway. The hoists are underhung and ride on the lower flange of the bridge beam.
How do you make a crane girder?
Design Example of a Gantry Crane Girder Maximum load lifted = 200 kN. End clearance of crane = 600 mm (minimum). Minimum headroom from rail top = 4500 mm. Weight of crab = (1/5 of maximum load lifted + 5 kN) = (1/5) × 200 + 5 = 45 kN.
What is underslung crane?
Underslung cranes are proven to maximize customer floor space and mobility. The cranes are typically attached to the existing roof structure—columns to support the crane runway are not needed. The installation of stand-alone steel superstructures also enables the solution to be flexible to production requirements.
What is girder gantry crane?
Introduction Gantry Girder The cranes are either hand-or-electrically operated. The rails are equipped on a girder is called a gantry girder. The gantry girder spans over gantry columns.
What is a design brief of a crane?
File 4.2.2: Crane Strain: Design Brief Background. Cranes are used in construction to assist in lifting heavy members by suspending them in the air while they are positioned and lowered into place. The loading capacity of a crane relates to how the crane was designed and built, in addition to how often it is used.
What is a double girder crane?
On a double girder crane, there are two girder beams that make up the bridge and they’re supported by an end truck on each side. In most instances, the trolley and hoist run on a rail installed on top of the bridge girders.
What is a bridge crane?
A bridge crane is a type of overhead crane that includes two or more overhead runways built into the building’s support structure. Bridge cranes have different configurations and can be comprised of one or two beams-more often referred to as a single girder or double girder design.
What size overhead crane do I Need?
A double girder crane may be the better solution for overhead cranes that require capacities over 15 tons and spans over 65 feet. Note: You will rarely see a single girder crane rated higher than 15-tons.
What are the disadvantages of a single girder crane?
The major disadvantage of a single girder crane system is that they do have a limit in terms of capacity, span, and hook height. A double girder crane may be the better solution for overhead cranes that require capacities over 15 tons and spans over 65 feet. Note: You will rarely see a single girder crane rated higher than 15-tons.