Front leg for a lower guide beam type fixed-point suspension bridge erecting machine

Abstract

The invention discloses a front leg for a lower guide beam type fixed-point suspension bridge erecting machine, which relates to the technical field of bridge erecting machine. The invention comprisesan upper section of a front leg, a lower section of the front leg, a set of HILMAN rollers mounted on the upper section of the front leg, and a pin shaft for connecting a main beam mounted on the upper section of the front leg. An upper cross beam and a low cross beam are arranged side by side between that two front leg body; A set of rollers is arranged on the lower cross member. A system conversion is realized by that oil cylinder support and the pin shaft connection form, in conjunction with HILMAN roller longitudinal displacement,therefore, positions of the front leg of the bridge erecting machine are changed, The utility model is convenient to operate, a beam transporter transports the guide beam and the bridge erector once through the tunnel, and the removal workload is small; the front running roller of the beam erector is placed at the lower cross beam of the front leg, and the sprocket of the beam erector is installed at the front end of the wheel box, so that the longitudinal traveling drive of the beam erector and the longitudinal traveling drive of the beam erector are integrated, and the structure form is simple.

Description

technical field [0001] The invention belongs to the technical field of bridge erecting machines, in particular to a front outrigger used for a lower guide beam type fixed-point lifting bridge erecting machine. Background technique [0002] The bridge erecting machine lifts the girders, then transports them to the position and puts them down. It is a bridge construction machine that travels on roads and railway tracks and is used to erect small span girders across the entire span. Its fuselage is huge and exceeds the limit of railway transportation, so it must be disassembled and transported, and then assembled and used after arriving at the construction site. [0003] The high-speed railway passenger dedicated line passes through mostly mountains and rivers, with complex terrain, and there are many bridge-tunnel connection sections. However, the existing down-beam type fixed-point hoisting bridge-erecting machine has a complex structure and needs to be disassembled and withd...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a lower guide beam type fixed-point hoisting bridge erecting machine with a front leg, which realizes the system conversion by adopting the oil cylinder support and the pin shaft connection form, and realizes the front support of the beam erecting machine in combination with the vertical displacement of the HILMAN roller The position of the girder is changed by the legs, the structure is simple, and the operation is convenient, which solves the problems that the existing lower guide beam type fixed-point hoisting bridge erecting machine needs to be disassembled when passing through the tunnel, the workload of removal is large, and the operation is complicated.

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