Installation method of large bridge crane

Abstract

The invention discloses an installation method for a large bridge crane. The installation method for the large bridge crane comprises the following steps: S1, carrying out construction preparation; S2, assembling a main beam at a left side and a main beam at a right side respectively, assembling two secondary beams at the middle part, and end beams, and installing heat-isolation plates below the main beam at the left side, the main beam at the right side, and the secondary beams; S3, sequentially lifting the main beam at one side, and the secondary beams and the end beams which are integrally assembled, and fixedly installing the main beam at the side, and the end beams; S4, lifting the main beam at the other side; and S5, sequentially lifting a secondary trolley and a main trolley. According to the installation method for the large bridge crane, which is disclosed by the invention, the maim beams, the secondary beams and the end beams are lifted by virtue of an automobile crane, and the main trolley is lifted in the form of cooperating the automobile crane with a traction device, thus consumed number of automobile crane groups, and the labour cost of operation are reduced; and one automobile crane is used for lifting, thus lifting difficulty for the main trolley can be reduced, and construction safety and quality are guaranteed.

Description

technical field [0001] The invention belongs to the field of hoisting equipment installation, and in particular relates to an installation method of a large bridge crane. Background technique [0002] Large-scale bridge cranes have many components, and the main girder and auxiliary girder are tens of meters long. At the same time, the frame of the main trolley is large, and the requirements for the tonnage and site of the truck crane are high when the equipment is hoisted at high altitude. These hoisting contents are the top priority of construction safety and quality control heavy. [0003] At present, the hoisting method of the bridge crane is mainly to lift the main girder, auxiliary girder, and end girder to the installation position before assembling, and then hoist the auxiliary trolley and the main trolley in turn. When hoisting the main trolley, the following two methods are mainly used for hoisting: one is to use a single truck crane to hoist from one side after th...

AI Technical Summary

Problems solved by technology

When hoisting the main trolley, the following two methods are mainly used for hoisting: one is to use a single truck crane to hoist from one side after the crane bridge frame is assembled. In this way, due to the width of the crane and the main trolley, a large-tonnage truck crane is required. ; The second is two-car lifting, one car spans the inside and the other car spans the outside; after the two cars lift the main trolley, they pull the assembled bridge frame under the main trolley as a whole. This installation method requires more site conditions. High, and the two vehicles are lifted, the risk factor is also higher

Images