Method for manufacturing high strength and large specification wire rope sling

Abstract

The invention relates to a manufacturing method in the technical field of bridge engineering, in particular to a method for manufacturing a high strength and large specification wire rope sling. The method comprises the following steps: (1) checking raw materials, and ensuring that a wire rope has no broken wire, no rust and the like; (2) according to the length of a workshop tensioning groove, performing optimal length matching on a long cable and a short cable to be matched into a certain length; (3) manufacturing a temporary anchorage device to ensure performing pretension; (4) performing pretension to control the inelastic deformation of the wire rope; (5) resisting corrosion; (6) cutting off a mark; (7) performing anchor manufacturing on the wire rope, and passing the wire rope into a buffer before anchor manufacturing; (8) casting an ingot by using a special conical ingot mould, and preheating the mould; and (9) performing tensioning retest on the sling according to a length matching table. The method can be applied to bridges; and according to the length of the workshop tensioning groove, the long cable and the short cable are matched to perform optimal length matching to be matched into a certain length, so that the method is favorable for performing pretension, saving materials simultaneously and reducing the bridge cost.

Description

technical field [0001] The invention relates to a manufacturing method in the technical field of bridge engineering, in particular to a manufacturing method of high-strength and large-size steel wire rope slings. Background technique [0002] High-strength and large-size steel wire rope slings (60, 80, 88) were successfully used in Xihoumen Bridge for the first time in China. There were a series of problems in the production process of high-strength and large-size steel wire rope slings. The error requirements for the length of the sling cannot meet the structural and force requirements. When the length of the sling is ≤ 200m, the distance between the marking points is required to be 1 / 5000, and the total length of the finished sling is 1 / 3000; the length of the sling is ≥ 200m , the distance between the marking points is required to be 1 / 8500, and the total length of the finished sling is required to be 1 / 5000. In order to ensure its practical application, its production m...

AI Technical Summary

Problems solved by technology

[0002] High-strength and large-size wire rope slings (60, 80, 88) were successfully used in the Xihoumen Bridge for the first time in China. A series of problems, the length of the long sling of this bridge reaches 340m, the conventional sling length error requirements cannot meet the structural and force requirements, when the sling assembly length is ≤200m, the distance between the marking points is required to be 1 / 5000 The total length of the cable is required to be 1 / 3000; when the total length of the sling is ≥ 200m, the distance between the marking points is required to be 1 / 8500, and the total length of the finished sling is required to be 1 / 5000