Gauge and method for measuring real rolling reduction of heavy rail straightening machine

Abstract

The invention discloses a gauge and method for measuring the real rolling reduction of a heavy rail straightening machine and relates to the field of heavy rail straightening. The gauge and method can accurately measure the real rolling reduction of the heavy rail straightening machine. The method for measuring the real rolling reduction of the heavy rail straightening machine through the gauge includes the steps that a heavy rail is rolled downwards in the production process of the heavy rail straightening machine and the straightening machine is stopped; the gauge for measuring the real rolling reduction of the heavy rail straightening machine is attached to the heavy rail, the positions of two end fixing plates correspond to the position of the axis of a lower roller, a longitudinal limiting edge is attached to a rib plate of the heavy rail, and a transverse limiting edge is attached to the upper edge of the lower side of the heavy rail; a measuring board is moved downwards, so that the transverse limiting edge is attached to the upper edge of the lower side of the heavy rail; a scale value indicated by a scale indication structure is read and the scale value indicated by the scale indication structure is the real rolling reduction of the heavy rail straightening machine. The gauge and method can be applied to production of the heavy rail straightening machine.

Description

technical field [0001] The invention relates to the field of heavy rail straightening, in particular to a measuring tool and 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 deformatio...

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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