Method for avoiding abraded black imprints of steel rail

Abstract

The invention discloses a method for avoiding abraded black imprints of a steel rail. By means of the method for avoiding the abraded black imprints of the steel rail, the problem that the abraded black imprints are formed due to the fact that the steel rail and working rollers slip in the steel rail residual stress eliminating production through the constant load technology is solved. According to the adopted technical scheme, the method is implemented in the mode that a residual stress eliminating device is matched with a straightening machine; a motor and a speed reducer of the residual stress eliminating device are connected through an overrunning clutch; in the direction of steel production and passing, when the linear speed of the working rollers of the residual stress eliminating device is lower than or equal to the passing speed of the steel rail, the overrunning clutch is in an overrunning state, and when the linear speed of the working rollers of the residual stress eliminating device is higher than the passing speed of the steel rail, the overrunning clutch is in a combined state; and in the reverse direction of steel production and passing, the initial energy of the motor of the residual stress eliminating device is stopped before the straightening machine rotates reversely, and the motor is in a free idling state. By considering the situations in the direction and the reverse direction of steel production and passing and adopting different control modes, the situation that the abraded black imprints appear on the surface of the steel rail is avoided, the investment is low, and the maintenance cost is reduced.

Description

technical field [0001] The invention relates to a method for adjusting a residual stress elimination device in a rail straightening area and matching it with a straightening machine to avoid black marks from slipping on the rail. Background technique [0002] To eliminate the residual stress of the rail through the constant load technology, one or more pairs of work rolls must be added after the straightening machine, and the residual stress of the rail can be relieved with an appropriate load. This is a problem, adding a residual stress relief device on the basis of the original straightening machine, including a set of motors, reducers, roll-to-roll equipment (including one or more pairs of work rolls), control mechanisms and control systems, and then The original straightening machine cooperates to form a complete system. However, due to the difference between the operation of the post-added equipment, that is, the operation of the residual stress elimination device and ...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for avoiding the black mark of rail wear, which solves the problem of the black mark of wear caused by slippage between the rail and the work roll of the residual stress elimination device due to the difference in working speed between the residual stress elimination device and the straightening machine, resulting in The problem of rail becoming scrap