Types of Overhead Bridge Cranes
Overhead cranes are used to move extremely heavy or bulky loads through the overhead space in an industrial facility. Their use conserves space on the floor and leaves aisles clear, unlike a forklift or other material lifting device. Overhead cranes lift, lower and move a load horizontally, directed by an operator either manually or with wireless controls. They tend to have low maintenance costs comparatively and have the most lifting height for higher vertical stacking and efficient use of space. Operator safety is ensured due to lack of obstacles in the way to run into.
Ace Industries designs and manufactures overhead cranes for all types of applications, from simple work stations to sophisticated custom lifting systems.
Single girder crane: An overhead traveling crane that utilizes a single bridge beam attached to the two runway/end
trucks. This bridge beam or single girder supports a lifting mechanism or hoist that "runs" on the bottom flange of the
bridge beam.
Double girder crane: An overhead traveling bridge crane that utilizes two bridge beams set atop the runway (end)
trucks. Generally this type of crane utilizes a top running trolley hoist which moves along the top of the two bridge
beams on its own set of trucks/trolley wheels. The hook from the hoist "falls" between the two bridge beams. Headroom
under the crane is increased by utilizing this hoist/crane configuration.
Top running crane: An electric overhead traveling crane having the end trucks supported on rails attached to the
top of the crane runways.
Under running crane: An electric overhead traveling crane having the end trucks supported on track attached to the
bottom flanges of the beam; or supported on bottom flanges of beams. These beams make up the crane runway.