Portal crane with jib structure

Abstract

The invention discloses a portal crane with a jib structure. A supporting base is arranged at the center of the upper surface of a main beam of the portal crane, a jib crane is fixedly arranged on the supporting base, the supporting base is connected with the main beam by virtue of a fastening member, a joist steel operating track is welded under the main beam of the portal crane, a material in a working region below the main beam is hoisted by a hoisting hook controlled by an electric hoist, a rotary platform on the jib type crane is fixed on the supporting base, a jib luffing mechanism and a lifting mechanism are fixedly arranged on the rotary platform, a material in a region outside the main beam is hoisted a hoisting arm controlled by the jib luffing mechanism and by a hoisting hook controlled by the lifting mechanism, and a balance weight keeping running balanced is fixedly arranged on the other end face of the rotary platform. According to the technical scheme, the portal crane and the jib crane are combined into a whole, so that the engineering construction plant is saved; meanwhile, the portal crane and the jib crane can simultaneously work, so that the construction efficiency is effectively improved.

Description

[0001] Technical field: [0002] The invention relates to a gantry crane with a boom structure, which is used when the space is narrow in engineering construction and is limited by the construction site. Background technique: [0003] At present, in the construction of buildings, railways, highways and other projects, it is often necessary to transport a large amount of materials, and to assemble equipment on site before the project can be constructed. Due to the small construction site and limited working conditions, large-scale equipment that can be stationed on the construction site The number is limited, which restricts the construction speed. Furthermore, the large-scale use of multiple cranes will inevitably increase the construction budget and bring economic burdens to the construction unit. Invention content: [0004] The task of the present invention is to provide a gantry crane with a boom structure that is not limited by the site and can effectively improve ...

AI Technical Summary

Problems solved by technology

[0003] At present, in the construction of buildings, railways, highways, etc., it is often necessary to carry a large amount of materials, and to assemble equipment on site before the construction can be carried out. Due to the small construction site and limited working conditions, large-scale equipment that can be stationed in the construction site The quantity is limited, which restricts the construction speed. Moreover, if multiple cranes work together, a large number of cranes will increase the construction budget and bring economic burden to the construction unit.

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