Single-girder hanger and reach stacker

Abstract

The invention provides a single-girder hanger which comprises a girder (1), a large telescopic beam (2), a small telescopic beam (3), cross beams (4), a follow-up supporting mechanism (5), a first limiting mechanism (6) and a second limiting mechanism (7), wherein the large telescopic beam (2) and the small telescopic beam (3) are located in the girder (1), and the small telescopic beam (3) is nested in the larger telescopic beam (2); the cross beams (4) are located at free ends of the large telescopic beam (2) and the small telescopic beam (3); one end of the follow-up supporting mechanism (5) is connected with the large telescopic beam (2), the other end of the follow-up supporting mechanism (5) is nested on the small telescopic beam (3), the outer wall of the follow-up supporting mechanism (5) is propped against the inner surface of the girder (1), and the inner wall of the follow-up supporting mechanism (5) is propped against the outer surface of the small telescopic beam (3); the first limiting mechanism (6) is located at the fixed end of the small telescopic beam (3); and the second limiting mechanism (7) is located on the large telescopic beam (2). According to the single-girder hanger, the follow-up supporting mechanism is arranged between the girder and the telescopic beams, follow-up supporting for the small telescopic beam is realized, and supporting moment arms of the two telescopic beams are prolonged, so that the stress condition of a mechanical structure is improved, the requirement for carrying capacity of a mechanical material is reduced, the carrying capacity of the single-girder hanger is improved, and the single-girder hanger can lift a heavy load container weighing up to 20 ft.

Description

technical field [0001] The invention relates to the field of engineering machinery spreaders, in particular to a single main girder spreader and a front hanger. Background technique [0002] Heavy-duty container spreaders such as front-loading container spreaders generally adopt the structure of double main beam spreaders to meet the requirements of heavy-duty working conditions, which leads to large spreader volume, asymmetric telescopic beam structure, and increased weight of the spreader itself. And other issues. [0003] At present, the spreader of the stacker used for lifting empty containers generally adopts a single main beam structure. That is to say, the left and right telescopic beams adopt different sections and are arranged in layers in the same main beam. The advantage of this single main girder structure is that the hanging body is small in size, compact in structure and light in weight. However, due to structural and size limitations, the telescopic beam ca...

AI Technical Summary

Problems solved by technology

Since the extension of the telescopic beam of the spreader to the outside of the main beam is about 3066mm, the pressure on the end of the main beam is about 4 times the load of a single telescopic beam, which results in a heavy load on the mechanical structure and a bearing capacity for mechanical materials. The requirements are high, and this high force is even more severe under heavy load conditions, making ordinary single main girder spreaders unable to lift heavy-duty containers with a length of more than 20 ft

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