Heavy rail scaling apparatus and method

Abstract

The present invention provides a heavy rail scaling apparatus and a method therefor. The apparatus is a single-set or double-set mechanical scaling apparatus comprising a striking head elevating system, a transmission system, a frame and a detection switch. According to the invention, an electrohydraulic push rod is taken as power source to drive a swing rod to swing, a top wheel arranged at the front of the swing rod is employed to control the rise and fall of a lifter plate to allow the striking head arranged at the top end of the lifter plate to be located at either a working position or as top position and cooperate with a scaling saw to realize accurate scaling of the heavy rail. By employing a front detection switch and a damping and thickness-adjusting striking head having a polyurethane bumper pad and an adjusting gasket unit, impact to the striking head can be reduced while the speed of a frequency-changing roller-way is controlled, the service life of the scaling apparatus can be prolonged, the precision of heavy rail scaling can be improved, and the tolerance of the length of the heavy rail is kept between +4mm and -4mm. The apparatus has a simple structure and is easy to operate and convenient to maintain. The method is reasonable, and enables stable system running process, high operation rate, and low accident rate. In addition, the apparatus can increase the yield of heavy rail. The present invention is particularly suitable to be used for the scaling of 95, 96, 99,100 meter heavy rails.

Description

technical field [0001] The invention belongs to the field of rolling equipment, and in particular relates to a precise mechanical length-sizing device and a length-sizing method for railway high-speed heavy rails. Background technique [0002] With the speed up of railway vehicles and the advancement of high-speed rail production technology in the field of steel rolling, high-speed rails with a speed of 350km / h have also been developed rapidly, thus putting forward higher requirements for the quality requirements of high-speed rails, especially the accuracy of length sizing . [0003] High-speed rail sizing is an important link in rail finishing. At present, almost without exception, the photoelectric control scale device is used in the world. The German WAGNER, American CMI and Austrian LINSINGER rail saws and drill combination machine tools introduced by my country are all realized by clamping roller table counting, photoelectric detection and control, that is, through t...

AI Technical Summary

Problems solved by technology

However, it was found in the process of use that although the above-mentioned electronically controlled sizing device has a high degree of automation, it has the defects of large investment, high failure rate, and difficult maintenance; The deviation of gap and sizing grating measurement data, after long-term use, its sizing accuracy is obviously reduced, and some even fail to meet the requirements of sizing tolerance standards and have to stop using it, which not only wastes funds and resources, but also affects heavy rail. smooth production

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