A portable device for accurately repairing the wavy wear of subway curved rails

Abstract

The invention relates to a portable device for accurately repairing the wavy abrasion of a steel rail of a subway curve. The portable device comprises a laser distance measuring sensor (9), a grinding assembly (7), a driving assembly, a control assembly and a detachable machine frame, wherein the laser distance measuring sensor (9) detects the wavy abrasion of the steel rail of the subway curve, the grinding assembly is used for repair, the driving assembly and the control assembly drive the grinding assembly (7) to move in the X-axis direction, the Y-axis direction and the Z-axis direction, and all the components of the device are installed on the detachable machine frame. Compared with the prior art, the portable device can be installed on site and is manually pushed to move, for a designated spot, the portable device can actively and accurately repair the wavy abrasion of the steel rail of the subway curve, when the radius of curvature of the steel rail of the curve is small, radial deviation compensation can be accurately considered, re-forming can be easily and repeatedly conducted, the grinding assembly can move in the direction of the rail and in the radial direction of the rail and can accurately ascend and descend, the included angle between a grinding wheel and the steel rail can be adjusted, and the portable device has the advantages of being convenient to use, high in efficiency, low in cost, high in precision and the like.

Description

technical field [0001] The invention relates to the technical field of rail grinding, in particular to a technology for repairing the wavy wear of subway rail curves with a small radius of curvature. Background technique [0002] The rail is the carrier of all railway running equipment, and the quality of the rail directly affects the operating quality and safety of the running equipment. Due to the dynamic effect of the train, the natural environment and the quality of the rail itself, the surface of the rail is prone to defects such as wear, unevenness, waves, flashes, and corrosion. These defects shorten the life of the rail itself, increase the workload and cost of maintenance, affect the quality of vehicle operation and passenger comfort, and even affect the safety of train operation. Domestic urban rail transit uses rail grinding vehicles, which implement PLC (programmable logic controller) or computer control, to grind the rolling surface of the line rail head to eli...

AI Technical Summary

Problems solved by technology

At present, there are many grinding heads on the grinding vehicle, the grinding stone needs to be replaced during the operation, lubricating oil is added, and diesel oil needs to be added after construction, the operation is cumbersome and complicated; a large number of sparks will be generated during grinding, and the vehicle must be equipped with a fire protection system and a specified capacity. The water tank has a large axle load and is difficult to transport; it is expensive and the operating cost is high; the preparation work before grinding is heavy, the grinding operation time is long, the number of times is many, the equipment maintenance task is heavy, and the working conditions are also strict; the repair of the rail curve is fast There is no good solution for grinding technology, and it is impossible to solve the grinding of specified rails and find abnormalities in time, so as to prevent unburned; when grinding curves with small radius of curvature, radial misalignment compensation cannot be accurately considered

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