What is the gantry crane

Gantry crane is mainly used for outdoor goods yard, material goods, bulk cargo handling operation.Its metal structure is like a portal frame, which carries two legs under the main beam. It can walk directly on the track of the ground. The two sides of the main beam can have a cantilever beam.The door - type crane is divided into full - gate crane and semi - gate crane.The gantry crane has the characteristics of high utilization of site, wide scope of operation, wide adaptability and strong universality. It is widely used in port yard.

The selection of the gantry crane is in accordance with the relevant provisions of GB/T14406-1993 and gb5905-86.Generally, the weight is under 50t, and the span is within 35m, without special use requirement, the single main beam type should be selected.If the width of the door is wide, the work speed is high, or the heavy lifting is often used, the two-beam door crane should be selected.

The span of length gantry crane is an important factor affecting the quality of crane itself.In the selection, the span should be minimized as long as the equipment is met and the span series standard is met.

3. The determination principle of wheel spacing (a) can meet the stability requirements of the door frame along the direction of crane rails;(b) the dimensions of the goods should be able to pass through the flat steel frame of the leg;(c) note that the rotation distance B is proportional to the span S, generally taking the wheelbase B= (1/4-1/6) S.Four, conditions of use environmental conditions: temperature at 25 ℃ ~ + 40 ℃ in the atmosphere, the average temperature in 24 hours can't higher than + 35 ℃, using the site is not higher than 2000 meters above sea level, when elevation above 1000 meters, the need for calibration motor capacity.Conductive form: divided into cable conduction and sliding wire conduction two kinds.The equipment can be used for fixed interinter-interroom handling materials such as factories, power stations, warehouses and materials, and installation and maintenance equipment.According to the purposes and fetch device can be divided into the following several types: hook bridge crane is suitable for the mines, enterprises workshop, warehouse, etc in the indoor or outdoor fixed cross interplanting general loading and unloading and lifting transportation work, commonly used work level is A3 ~ A6. A3 and A4 applies to equipment installation and maintenance, the A5 is suitable for machining, metal structure, assembly, A6 is suitable for the job is busy, or often full load working conditions.The crane is not suitable for hoisting inflammable, explosive dangerous goods or high temperature liquid metal

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