How to choose the gantry crane?

How to choose the gantry crane?

(1)Selection of single girder gantry crane and double girder gantry crane

Under normal circumstances, the lifting capacity is less than 50 ton, the span is less than 35m,haven’t
special requirements, should choose single main girder type.
If you require a large span, the work of high speed, or often lifting heavy, long pieces, it is
appropriate to choose double girder gantry crane.

(2)Span and the length of cantilever

The span of gantry crane is important factor affecting the quality of the crane itself.
In the choice, should satisfy the equipment use condition and meets the span series standard premise,
should reduce the span as far as possible.

(3)The principle of determining track
(a)Can meet the stability of the gantry along the direction of the crane track requirements
(b)The external dimensions of the cargo shall pass through smoothly the flat steel frame of the support
legs
(c)Note that the wheelbase B and the span of S into a certain proportional relationship, the general take
track B = (1 / 4-1 / 6) S

(4)Determine the span size of the gantry crane

In the work, the external dimensions of the gantry crane and the yard of cargo and transport vehicles
should Leave a certain space size, in order to facilitate loading and unloading operations.General
transport vehicles within the span of loading and unloading, Should be kept with the door more than 0.7m
spacing. Spreader in the absence of work and transport vehicles should have more than 0.5m spacing, when
the cargo through the leg, there should be more than 0.5m spacing.

(5)Selection of electrical equipment for gantry cranes