Introduction of Different Gantry Cranes

AQ-MH hoist single girder gantry crane is mainly composed of bridge (main beam), four legs, lower crossbeam, crane driving device, electrical control, electric hoist, etc. it is designed and manufactured according to the standard JB566.3.2-91, and is used together with CD, MD and other electric hoists. It becomes a light and small single beam hoist crane, which is mainly used for loading, unloading and transporting materials in open yard. Lifting capacity: 3-16t, span: 12-30m, lifting height: 3-18m, operation mode is divided into ground and cab operation. This gantry crane has the advantages of simple structure, convenient maintenance, light self weight, etc. It is mainly used for loading, unloading or grabbing materials in open places and warehouses.

AQ-BMH Hoist Semi Gantry Crane

This kind of semi gantry crane only has two legs, and one side is operated by the track on the warehouse. AQ-MH and AQ-BMH can also be used with European type hoist, which is called European single girder gantry crane or European single girder semi gantry crane. Ecept for box structure, the steel structure can also adopt truss structure, which can effectively reduce the wind resistance and is suitable for outdoor environment with large wind force.

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L-type single girder gantry crane lifting capacity: 5-50t, span: 18-35m, lifting height: 6-18m, working level: A5, working environment temperature: – 20 ℃ – + 40 ℃. L-type can lift large-scale objects to the cantilever end, with general operation speed. It is suitable for general loading, unloading, hoisting and handling work in open freight yard and along the railway. Due to its own structural characteristics, the height of the whole crane is reduced and the cost is saved when the lifting height is fixed.

AQ-MG Double Girder Gantry Crane

Double girder gantry crane is composed of trolley, crane operation mechanism, electricity, gantry (main beam, outrigger, end beam, saddle, ground beam, ladder platform, walking platform handrail, trolley track and limit installation, cab installation), etc. There are mainly A-frame and U-frame double girder cranes.

The U-shaped structure has a large leg space, which is suitable for lifting large-scale objects to the cantilever end for loading and unloading. Generally, there is no saddle in the U-type double girder gantry crane; the double girder gantry crane has no saddle when there is no cantilever, and only saddle when there is cantilever. When the span is ≥ 35m, the legs are divided into rigid legs and flexible legs. The flexible legs are used to compensate the structural deformation caused by temperature difference. It’s like the function of expansion joints in architecture.

The double girder gantry crane can be powered by cable drum, diesel generator set or bare copper slide wire. Compared with the double girder bridge crane, the double girder gantry crane has legs and saddles. As for the trolley and crane running mechanism, they are consistent with the double girder bridge crane. It can also be configured in European style, which is called European double girder gantry crane.

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Lifting capacity of double girder gantry crane: 5-200T, span: 18-35m, lifting height: 6-18m, working level: A5, A6, working environment temperature: – 20 ℃ – + 40 ℃. Gantry crane is a kind of deformation of bridge crane. It is mainly used for loading and unloading of outdoor goods yard, stock yard and bulk cargo. Its metal structure is like a portal frame. Two legs are installed under the main beam, which can walk directly on the track on the ground. The two ends of the main beam can have overhanging cantilever beams. Gantry crane has the characteristics of high utilization rate, wide operation range, wide adaptability and strong universality, which is widely used in port freight yard.

Container Gantry Crane

RTG container gantry crane and RMG container gantry crane are special cranes used for containers lifting and moving. It is a lifting equipment specially used for container loading and unloading in ports and wharves, with high speed and high working level, which is used for container wharves. After the trailer transports the container to the yard or the rear, it can be piled up by the container gantry crane or directly loaded and transported away, which can speed up the turnover of the container bridge or other cranes. A yard that can stack containers of 3-4 layers in height and 6 rows in width is generally of tire type and rail type. Compared with container straddle crane, the span and height of both sides of gantry crane are larger. In order to meet the needs of port transportation, this kind of crane has a higher working level. The span is determined by the number of container rows to be crossed. The maximum span is about 60m, corresponding to the lifting capacity of 20 foot, 30 foot and 40 foot long containers of about 20t, 25t and 30t respectively.

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