This bridge-type crane, bridge (spans) which is mounted on a support moving to the crane railway. The most common gantry cranes have two supports. One of the pillars can be rigidly connected to the bridge (hard or spatial support), and the other - hinged (flexible or flat support).
Crane called semigantry if the bridge rests with one side on the runway, and the other - on the support legs.
Gantry crane is often used in the construction of large projects for the installation of industrial structures. Gantry cranes can also be used to perform storage operations. Gantry cranes have advantageous technical characteristics and high performance dignities.
Crane consists of a bridge (without brackets, with one or two consoles), supports and end trucks. Bridge crane can be single-girder or double-girder, box or truss construction. Gantry crane moves on a rail crane rails with threaded (end) trucks. Each of the trucks is driving. Fixing gantry and semi-gantry cranes carried out anti-theft devices such as tick-borne, in accordance with the requirements of safety rules.
1. Single-girder gantry crane with tubular or box section.
Carrying capacity - from 3.2 to 50 tons.
The best option for those cases where there is no possibility to use the walls and ceiling of the room. Also, single girder crane is suitable for lifting work in the open air. All single-girder traveling cranes have their own mounts, which are installed on the crane track.
During the manufacturing of the basic units of tubular construction crane large diameter pipes are used which are commonly used in the construction of gas pipelines of various capacities. Box electric crane is made of welded box beams.
All crane constructions with single girder spans used truck suspension structure moving along the monorail (or two hanging rails) as a loading mechanism. This can be electrical as well as a mono- or bi-rail bogie suspension.
Able to move heavier loads compared to single-beam gantry cranes. Double girder gantry cranes can be equipped with powerful electric hoists and crane control system: crane control cabin, crane power supply system and other additional crane tools.