Longitudinal feed self-adaptation device for steel rail milling and grinding machine

Abstract

The invention discloses a longitudinal feed self-adaptation device for a steel rail milling and grinding machine. The device comprises a carriage, a machine body, a grinding wheel and a locating boot, wherein the carriage is vertically provided with a linear guide rail; the machine body is driven by a vertical oil cylinder to vertically move along the linear guide rail on the carriage; the machine body is fixedly provided with a servo motor for vertically driving the locating boot; the machine body is further provided with a torque motor; and the grinding wheel is arranged on the machine body through a main shaft. According to the longitudinal feed self-adaptation device for the steel rail milling and grinding machine disclosed by the invention, hydraulic pressure detection control over the vertical oil cylinder and the grinding torque detection control over the torque motor are simultaneously applied to one feed device, and a multi-closed-loop control loop is formed, so that a self-adaptive feed function in various working conditions is realized; and a hydraulic feed system of the vertical oil cylinder and a servo feed system of the servo system are simultaneously applied to the feed device, and coarse feed and fine feed at different levels, as well as safety protection at different levels, are realized, so that the feed precision and safety performance of the feed systems are improved.

Description

technical field [0001] The invention relates to a milling and grinding feeding device, in particular to an adaptive device for longitudinal feeding of a rail milling and grinding car suitable for rail grinding. Background technique [0002] Steel rails are the main basis for carrying trains. With the increase of the speed of high-speed railways, strict requirements are put forward for the surface roughness and smoothness of the steel rails. Under the high-speed running state of the trains, the wear and disease of the steel rails are easy to aggravate. [0003] At present, the milling and grinding car is used for the grinding of rails. First, the forming milling cutter wheel is used for high-speed milling, and then the wide grinding wheel is used for forming grinding to eliminate milling processing errors and forming interface water chestnut. Wide range. The traditional grinding device mainly adopts the combination of simple numerical control and manual control. The servo mo...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the open-type controlled grinding device feeding device used in the existing rail milling and grinding vehicles cannot perform feedback adjustments for grinding wheel wear, the present invention provides an adaptive longitudinal feed device for rail milling and grinding vehicles, which adopts closed-loop control, When the grinding wheel is worn or the rail goes uphill or downhill, it will automatically feedback and adjust the grinding device to ensure the quality of rail grinding and improve work efficiency

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