Stress-relieving device for seamless rails by using excitation method, and the relieving method

Abstract

The invention discloses a stress-relieving device for seamless rails by using a vibration method and a stress-relieving method, and is implemented by carrying out field detection on the stress-relieving effect of rails mainly by using a device for realizing the stress homogenization of rails in a periodic-vibration gas-liquid pressurized mode and supplementarily by using a stress sensor, and then carrying out stress-relieving operation in a machine-liquid-electricity integrated automatic mode. The whole stress-relieving device disclosed by the invention is light in weight, and provided with an anti-overturn device for ensuring a trolley is not overturned to the side during the operation of the trolley, thereby reducing the labor intensity and improving the operating efficiency and quality.

Description

technical field [0001] The invention relates to a stress relieving device and a relieving method of a seamless steel rail exciting vibration method, specifically for seamless rails, adopting a periodic vibration method to realize stress relieving, and belongs to the field of special mechanical products for stress relieving of seamless rails in the railway industry. Background technique [0002] Seamless track is currently the main track structure commonly used in railways at home and abroad. It is generally used in railway construction. The current construction technology for laying seamless lines at one time mainly includes single sleeper, group sleeper and long rail row. There are three catch methods, among which the single sleeper laying method cancels the traditional rail row assembly base, and the long steel rails and sleepers are directly transported to the construction site for laying. Its comprehensive operation efficiency is high, the technology is advanced, practical...

AI Technical Summary

Problems solved by technology

[0002] Seamless track is currently the main track structure commonly used in railways at home and abroad. It is generally used in railway construction. The current construction technology for laying seamless lines at one time mainly includes single sleeper, group sleeper and long rail row. There are three catch methods, among which the single sleeper laying method cancels the traditional rail row assembly base, and the long steel rails and sleepers are directly transported to the construction site for laying. Its comprehensive operation efficiency is high, the technology is advanced, practical and reliable. Leading level, but for a long time, in the process of laying and maintaining seamless lines, the stress relief method and technology are still relatively backward. Based on the current situation and development trend of my country's railway construction, more efficient new stress relief methods and equipment are urgently needed further research

In order to ensure the rigidity and straightness of the seamless line rail, the current method of stretching the rail is mainly the mechanical method of manual traction, which uses high-strength bolts, gusset fasteners or elastic fasteners to constrain the rail, One end of a 500m-long steel rail is fixed, and 400t of tension is applied to the other end to stretch the rail to generate tensile stress inside the rail. The distribution situation is not conducive to the uniform release of the stress of the rail; on the other hand, the effect of measuring the stress release is mainly used by the scribing method, which makes the whole set of equipment bulky and cumbersome, and the operation process is labor-intensive and inefficient. There are many operating factors based on experience. Inaccurate measurements

There is also a method of stress relief using a hydraulic rail bumper, such as the Chinese invention patent "Seamless Line Stress Release Rail Crashing Device" (application number: 201010242615.7 application date: 2010-08-02), which is adopted by a hydraulic pump, impact The hydraulic rail collision device composed of the device and the rail collision device; disclosed in the Chinese utility model patent "Hydraulic Rail Crasher" (application number: 200820112869.5, application date: 2008-04-30), is composed of a gasoline engine, an oil pump assembly and a fuel tank , the firing mechanism, the rail collision slider, the frame and the wheels constitute the hydraulic rail collision device. The above two hydraulic rail collision devices have the disadvantages of: the impact force is relatively large, and the operating speed is relatively slow; Install sensors on site and detect the stress dissipation effect of the rails; third, the overall weight of the impact equipment is not conducive to the installation and transportation of the operator; fourth, the rail impact machine installed on the rails has no anti-overturning device, which is not conducive to Stable positioning on the rail

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