Low-clearance double-beam bridge type crane

Abstract

The invention relates to a low-clearance double-beam bridge type crane. The low-clearance double-beam bridge type crane comprises two main beams which are parallel to each other, a connection beam for connecting the main beams, small moving car rails arranged on the two main beams respectively, large car walking mechanisms capable of moving on a rail bearing beam and arranged at the end parts of the two main beams, small moving cars adapted to the small moving car rails, power platforms arranged between the two main beams, a lifting pulley block mounted on the small moving cars, and a lifting hook group connected with the lifting pulley block, wherein the power platform is provided with a lifting mechanism and a dragging mechanism; the lifting mechanism is used for controlling the lifting hook group to be hoisted; and the dragging mechanism is used for controlling the small moving cars to move. According to the crane, the space between the two main beams is sufficiently utilized and the lifting mechanism mounted on the small moving cars in a traditional form is changed to be fixedly arranged on the inner sides of the two main beams, so that the space of a workshop is saved and the mounting and overhauling are very convenient; and furthermore, compared with the traditional form, for the crane disclosed by the invention, the weight of the small moving cars is greatly alleviated so that the load on the main beams is reduced and the weight of the main beams is facilitated to be reduced.

Description

technical field [0001] The invention relates to the field of crane equipment, in particular to a low clearance double girder bridge crane. Background technique [0002] Bridge cranes are generally installed and used in factory buildings. Larger tonnage double-girder bridge cranes, common models have higher requirements for the space between the roof of the factory building and the track of the cart. While ensuring the lifting height, it is required that the clearance distance between the top of the rail and the roof of the factory building is relatively large. Furthermore, the requirements for the workshop space are increased, and the construction cost of the workshop is greatly increased. In addition, the traditional type of double-girder bridge crane, the hoisting mechanism and the trolley traveling mechanism (including the driving motor, etc.) are all installed on the small sports car. , Difficult to install, not conducive to equipment installation and maintenance. [...

AI Technical Summary

Problems solved by technology

Larger tonnage double-girder bridge cranes, common models have higher requirements for the space between the roof of the factory building and the track of the cart. While ensuring the lifting height, it is required that the clearance distance between the top of the rail and the roof of the factory building is relatively large. This increases the requirements for plant space and greatly increases the cost of plant construction.

In addition, the traditional type of double-girder bridge crane, the hoisting mechanism and the trolley traveling mechanism (including the driving motor, etc.) are all installed on the small sports car. , difficult to install, not conducive to equipment installation and maintenance

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