Measuring method of true reduction of heavy rail leveler

Abstract

The invention discloses a measuring tool and a measuring method for the real reduction of a heavy rail leveler, relates to the field of heavy rail straightening, and provides a measuring tool and a measuring method capable of accurately measuring the real reduction of a heavy rail leveler. The method of using this measuring tool to measure the reduction of the rail straightening machine is as follows: during the production process of the heavy rail straightening machine, stop the straightening machine after pressing down the heavy rail; attach the measuring tool for the real reduction of the heavy rail straightening machine to the heavy rail , the position of the two end fixing plates corresponds to the axis position of the lower roller, the longitudinal limit side fits with the rib plate of the heavy rail, and the transverse limit side fits with the lower and upper edges of the heavy rail; move down the measuring plate to make the horizontal The positioning edge is attached to the lower edge and upper edge of the heavy rail; read the scale value indicated by the scale indicating structure, and the scale value indicated by the scale indicating structure is the real reduction amount of the heavy rail leveler. The invention can be applied to the straightening production of heavy rails.

Description

technical field [0001] The invention relates to the field of heavy rail straightening, in particular to a method for measuring the real reduction of a heavy rail straightening machine. Background technique [0002] The zero-degree reduction straightening method of heavy rail straightening is: the zero-degree calibration position of the straightening roller is carried out under the condition of no force, and the reduction is the displacement at the zero-degree position. Its disadvantages are: the accuracy of the zero degree calibrated in the unstressed state is affected by the mechanism gap, elastic-plastic deformation, assembly error, etc., and the correlation with the real deformation is poor, it cannot reflect the real reduction, and cannot correct the straightening process parameters. Perform high-precision control. [0003] During the straightening process of the roller leveler, due to the mechanism gap, elastic deformation, elastic-plastic deformation of the straighten...

AI Technical Summary

Problems solved by technology

Its disadvantages are: the accuracy of the zero degree calibrated in the unstressed state is affected by the mechanism gap, elastic-plastic deformation, assembly error, etc., and the correlation with the real deformation is poor, it cannot reflect the real reduction, and cannot correct the straightening process parameters. Perform high-precision control

[0005] (1) Mechanism clearance cannot be completely ruled out: the hydraulic locking of the bearing housing of the upper roller shaft brings two problems. Stop the straightening roller to press down, and at this time, the pressing locking device will lock the straightening roller bearing upward after the straightening roller is pressed down. After locking, there will be a gap between the straightening roller and the straightening parts, which is not easy Accurate Calibration

The second is that the locking is only on the large shaft of the upper roller, and the small bearing at the other end has no locking device. For the small bearing end of the upper roller after the force is applied, the bearing gap will be reflected in the reduction of the straightening roller

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