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How to determine the wheelbase of a gantry crane

August 4, 2021

Gantry crane is a variant of bridge crane, also called gantry crane. Mainly used for outdoor cargo yard, stock yard cargo, bulk cargo loading and unloading operations. Gantry cranes have the characteristics of high site utilization, large operating range, wide adaptability and strong versatility, and are widely used in port freight yards.


Its metal structure is like a door-shaped frame, with two supporting feet installed under the main beam, which can walk directly on the track on the ground, and the two ends of the main beam can have outhanging cantilever beams.


The gantry crane is a bridge type crane in which the bridge frame is supported on the ground track by the legs on both sides. Structurally, it is composed of a mast, a cart operating mechanism, a crane trolley, and electrical parts. Some gantry cranes only have outriggers on one side, and the other side is supported on the factory building or trestle bridge. They are called semi-gantry cranes. The upper part of the gantry crane (including main beam and end beam), outriggers, and lower cross beams are composed of the upper part of the bridge frame (including the main beam and the end beam). In order to expand the operating range of the crane, the main beam can extend beyond the outriggers to one or both sides to form a cantilever. A crane with a boom can also be used to expand the crane's operating range through the pitch and rotation of the boom.


The wheelbase of the gantry crane is very important, it directly determines whether the gantry crane can run smoothly, otherwise it will bring a lot of trouble in the later use.


When determining the wheel base of the gantry crane, the following determination principles can be used:


1. It can meet the stability requirements of the mast along the crane track.


2. The external dimensions of the cargo should be able to smoothly pass through the flat steel frame of the outrigger.


The above is the principle of determining the wheelbase of gantry cranes. In fact, you can make appropriate adjustments according to your actual situation during daily use.


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