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CLASSIFICATION OF GANTRY CRANES (PART 1)
2014-11-08 08:12
CLASSIFICATION OF GANTRY CRANES (PART 1)
Gantry cranes’ classifications is according to doorframe formal structure, the main form of beams, the main beam structure and application.
Frame structure
Divided to gantry crane and cantilever gantry crane
Gantry Crane
1. Full gantry crane: overhang girder trolley moves in the main spans;
2. Semi gantry cranes: high and low legs according to the civil use of space requirements.
Cantilever gantry crane
1. Double cantilever gantry crane: the most common type of structure, the effective use of force and site area of the structure is reasonable.
2. Single Cantilever Crane: This form of structure is often chosen by complex environment requirements.
The main form of beams
Single girder and Double girder
1. Single girder
Single girder gantry crane structure is simple, easy manufacture and installation, small self-quality, multi-girder box-shaped frame for off-track structure. The overall stiffness of the single girder crane is weaker compare to the double girder gantry crane. Therefore, when the starting weight Q≤50t, when the span S≤35m, chose this form. Single girder gantry crane gate leg L-type and C-type forms. L-manufacture and installation convenience, the stress ability was good and small quality, but, lifting leg cargo through space at a relatively small number. C-shaped legs made of sloped or curved shape, aimed at a larger horizontal space to make the goods pass feet.
2. Double girder
Double girder gantry crane has carrying capacity, span, good overall stability, variety, but the quality of their starting weight compared with the same single-girder gantry crane to be bigger and the cost is higher. Double girder crane can be divided into box girders and trusses girder in two forms depending on the structure of the main beam. People used box structure more commonly.
Gantry cranes’ classifications is according to doorframe formal structure, the main form of beams, the main beam structure and application.
Frame structure
Divided to gantry crane and cantilever gantry crane
Gantry Crane
1. Full gantry crane: overhang girder trolley moves in the main spans;
2. Semi gantry cranes: high and low legs according to the civil use of space requirements.
Cantilever gantry crane
1. Double cantilever gantry crane: the most common type of structure, the effective use of force and site area of the structure is reasonable.
2. Single Cantilever Crane: This form of structure is often chosen by complex environment requirements.
The main form of beams
Single girder and Double girder
1. Single girder
Single girder gantry crane structure is simple, easy manufacture and installation, small self-quality, multi-girder box-shaped frame for off-track structure. The overall stiffness of the single girder crane is weaker compare to the double girder gantry crane. Therefore, when the starting weight Q≤50t, when the span S≤35m, chose this form. Single girder gantry crane gate leg L-type and C-type forms. L-manufacture and installation convenience, the stress ability was good and small quality, but, lifting leg cargo through space at a relatively small number. C-shaped legs made of sloped or curved shape, aimed at a larger horizontal space to make the goods pass feet.
2. Double girder
Double girder gantry crane has carrying capacity, span, good overall stability, variety, but the quality of their starting weight compared with the same single-girder gantry crane to be bigger and the cost is higher. Double girder crane can be divided into box girders and trusses girder in two forms depending on the structure of the main beam. People used box structure more commonly.
