Small-spacing existing line added second line bridge erecting machine girder erecting method

Abstract

The invention discloses a small-spacing existing line added second line bridge erecting machine girder erecting method. The small-spacing existing line added second line bridge erecting machine girder erecting method comprises the following steps that 1, a bridge erecting machine is transformed, specifically, the bridge erecting machine comprises a first vertical column, a second vertical column, an oil cylinder, a machine arm and a carrying pole, the width of the first vertical column and the width of the second vertical column are 3.6 m, the width of the machine arm is 0.8 m, and four lifting appliances are arranged in the middle of the carrying pole; 2, a transverse guide rail is arranged and provided with a slide plate; 3, a contact screen is transformed, specifically, the contact screen is pulled towards the side of the first vertical column and the side of the second vertical column, the forward positioning stagger value is 35 mm, and the reverse positioning stagger value is -200 mm; 4, an insulating plate is installed; and 5, a support installation platform is installed. The small-spacing existing line added second line bridge erecting machine girder erecting method has the beneficial effects that the railway bridge erecting machine not only can meet the requirements of 4-meter small-spacing girder erecting but also can meet the requirements that normal transportation of an existing line railway is not influenced during construction through transformation.

Description

technical field [0001] The invention relates to the technical field of bridge erecting frame girders, in particular to a method for bridge erecting frame girders with small spacing between existing lines and second lines. Background technique [0002] The line distance between the project line and the existing line is 4.0m. During the beam erection construction of the project line (double track), the height of the column of the bridge erecting machine is higher than the height of the column of the catenary. Under the circumstances, the minimum distance between the bridge erecting machine and the catenary does not meet the safety distance, the bridge erecting machine and the catenary pole of the existing line must be modified, and the engineering line needs to be offset, and the bridge erecting machine is parked during the beam erection process and after the beam erection It is necessary to ensure the safety of the operation of the business line. This kind of beam erection op...

AI Technical Summary

Problems solved by technology

[0002] The line distance between the project line and the existing line is 4.0m. During the beam erection construction of the project line (double track), the height of the column of the bridge erecting machine is higher than the height of the catenary column. Under the circumstances, the minimum distance between the bridge erecting machine and the catenary does not meet the safety distance, the bridge erecting machin

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