Pressure head capable of reducing lateral bending risk for upward bending supplement straightening of end part of steel rail

Abstract

The invention discloses a pressure head capable of reducing the lateral bending risk for upward bending supplement straightening of an end part of a steel rail, and belongs to the technical field of metallurgy. The pressure head capable of reducing the lateral bending risk for upward bending supplement straightening of the end part of the steel rail comprises a pressure head body and is characterized in that the pressure head body is of a cuboid structure, and the downward pressing surface, used for being in downward pressing contact fit with the arc-shaped tread of a head part of the steel rail, of the pressing head body is of a plane structure. According to the pressure head capable of reducing the lateral bending risk for upward bending supplement straightening of the end part of the steel rail, by analyzing the problem that a traditional cambered surface pressure head structure easily causes the lateral bending of the steel rail in the process of the upward bending supplement straightening operation on the end part of the steel rail and a mechanism thereof, the invention provides a pressure head form for improving the cambered surface pressure head into the plane structure, in this way, the downward pressure applied to the arc-shaped tread of the head part of the steel rail by the pressure head is always at the highest point of the arc-shaped tread in the upward bending supplement straightening operation process, the generation of lateral component force on the steel rail can be effectively avoided, and then the lateral bending risk in the straightening process can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to an indenter for supplementary straightening of rail ends that can reduce the risk of side bending. Background technique [0002] If there is a large upturn before the front end of the rail enters the straightening machine, then sufficient elastic-plastic deformation cannot be carried out during the straightening process, and a large upturn will still be left. When it is easy to form side bends, it is necessary to repeatedly pressurize the upward bending and side bending after the side bending occurs, which seriously affects the production efficiency. [0003] The indenter used for supplementary straightening at the end of the traditional rail is the arc-shaped indenter structure, as attached Figure 4 The structure of the indenter shown. And the head of the rail is often set as a curved surface structure, and the curved tread surface of the rail head is actually an arched cur...

AI Technical Summary

Problems solved by technology

[0004] Therefore, when the traditional arc-shaped indenter is used for supplementary straightening of the rail end, the position accuracy of the rail and the indenter is very high, and there is a problem of side bending of the rail during the supplementary straightening process; especially for the existing For rails with side bending, the risk of further increase of side bending is greater

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