Automatic rust removing machine for steel rails

Abstract

The invention relates to the field of railway equipment, in particular to an automatic rust removing machine for steel rails. The machine comprises a base trolley; the base trolley is provided with arust removing machine overall cover; steel rails to be derusted penetrate through the rust removing machine overall cover; a rail top and rail bottom rust removing device, an end surface rust removingdevice, clamping, aligning and positioning devices and steel rail guide devices are arranged in the rust removing machine overall cover; two steel rail guide devices are arranged on the steel rails to be derusted; the clamping, aligning and positioning devices are arranged on the inner sides of the two steel rail guide devices; and the rail top and rail bottom rust removing deviceand the end surface rust removing device are arranged between the two clamping, aligning and positioning devices. Rail tops and rail bottoms are of separate structures in the prior art; present relative positions between thousand-blade wheels and the steel rails to be derusted are returned through current detection of derusting driving motors; and swing oil cylinders at the rail tops and the rail bottoms can be precisely positioned, adjusted and fed through proportional valves and displacement sensors, so that the steel rails to be derusted achieve an ideal derusting effect.

Description

technical field [0001] The invention relates to the field of railway equipment, in particular to an automatic derusting machine for rails. Background technique [0002] According to the requirements of "TB / T1632.2-2014 Rail Welding Part 2 Flash Welding", the end face of the rail to be welded and the contact part between the rail and the electrode of the flash welding machine should be derusted before the rail is welded, which can be carried out by means of grinding wheel or flap wheel Derusting before welding, the base metal of the rail should not be damaged during derusting before welding. [0003] With the development of national railway construction and the increase of total railway mileage, the demand for steel rails is also increasing. At present, most of the railway rails are seamlessly connected, and the rails are firstly welded into longer rails by flash welding in the rail welding factory, and then transported to the site for laying. Based on the characteristics o...

AI Technical Summary

Problems solved by technology

There is a circular arc with a radius of 300mm on the top surface of the 60kg steel rail. To complete the derusting of this circular arc surface, this will inevitably increase the complexity of the feeding structure of the grinding head, reduce the reliability of the entire machine tool, and easily cause the rail to wear out. and not easy to implement

Due to the balanced force of the articulated balance structure and the responsibility of the conversion mechanism, the contact surface of the rail bottom is much larger than the contact surface of the rail top when the rail bottom is derusted, which may easily lead to unbalanced derusting effects on the rail top and rail bottom.

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