Bridge crane additionally provided with prestressed reinforcement

Abstract

The invention relates to a bridge crane additionally provided with a prestressed reinforcement. The bridge crane comprises a lifting mechanism, an operating mechanism and a frame mechanism. The frame mechanism comprises a main girder and an end girder connected with the girder. At least one prestressed reinforcement is arranged between an upper grider and a lower grider of the main girder. Both ends of the prestressed reinforcement are respectively connected with a hydraulic cylinder through couplings. The hydraulic cylinder is connected with a driving control system. After the bridge crane adopts the technical scheme, as at least one prestressed reinforcement is arranged between the upper grider and the lower grider of the main girder, when acting forces are applied to both ends of the prestressed reinforcement, the main girder can be slightly hogged upwards and at the time, mainly the prestressed reinforcement of the frame mechanism of the crane is stressed, such that the stresses on other steel materials of the frame mechanism are reduced, and thus, the steel consumption of the part of the frame mechanism can be greatly reduced and the cost is saved.

Description

technical field [0001] The invention relates to a bridge crane, in particular to a bridge crane with strong member rigidity. Background technique [0002] In the existing bridge cranes, in order to increase the overall stress of the frame mechanism, the usual method is to increase the steel support, which greatly increases the steel consumption of the bridge crane, thereby greatly increasing the construction cost. Contents of the invention [0003] The purpose of the present invention is to provide a bridge crane with strong rigidity and saving steel materials and equipped with prestressed steel bars. [0004] To achieve the above object, the present invention adopts the following technical solutions: [0005] The present invention includes a hoisting mechanism, a running mechanism and a frame mechanism. The frame mechanism is composed of a main beam and an end beam connected thereto. Stressed steel bars, both ends of the prestressed steel bars are respectively connected...

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