An altitude change measurement and recording device and its application

Abstract

The invention relates to the field of track traffic, in particular to a device used for measuring and marking changes of compression amount of an elastic element, and to a floating track bed structure with the device applied. The height change measuring record device comprises a marking pole and a locating support. The marking pole penetrates through the locating support and is fixedly provided with a stop shoulder. A spring is arranged between the stop shoulder and the locating support. The height change measuring record device is characterized in that the locating support is fixedly provided with a clamping-holding part, the surface, above the stop shoulder, of the marking pole is sleeved with an indication casing pipe, and a friction pair is arranged between the clamping-holding part and the indication casing pipe. The height change measuring record device is simple in structure and reliable in effect. An elastic vibration isolator, an elastic vibration isolation device and the floating track bed which are respectively provided with the height change measuring record device are better in safety, actual working condition of the elastic element can be mastered at any time, pertinence is achieved for maintenance, a large number of manpower and material resources can be saved, and the market application prospects are wide.

Description

technical field [0001] The invention relates to the field of rail transportation, in particular to a device for measuring and identifying the change in the compression amount of an elastic element, and a floating ballast bed structure using the device. Background technique [0002] Vibration and noise are recognized as the most widely affected public hazards, and they are also a problem that needs to be solved urgently in the development of rail transit in recent years. Among the existing rail transit vibration and noise reduction technologies, the most successful practical application is the component floating technology, typically the floating ballast bed technology, which has high vibration isolation efficiency and stable working performance, which has become a consensus in the industry. In order to prevent the natural failure or accidental damage of the elastic elements used to support the floating slab in the floating ballast bed structure, it is necessary to frequently...

AI Technical Summary

Problems solved by technology

However, the existing indicating devices have a common defect, which is that they cannot really display the maximum deformation of the elastic element under working conditions. The observation of the above-mentioned indicating device can only be observed after the operation of the rail vehicle is over, and the indication of the observation indicating device corresponds to the restored static load state, not the maximum force (deformation) state

None of the existing indicating devices have a memory function, and cannot directly reflect the maximum deformation in the working state. Since the floating plate is generally supported by multiple elastic elements at the same time, in a static state, even if a certain elastic element has a problem, However, due to the help of other elastic elements around, neither the elastic element nor the floating plate will reflect a large height change. Therefore, when the indicator device is observed from above, the defects of the elastic element cannot be detected in time. Only when the elastic element When serious problems such as spring breakage occur, the elastic element or / and the floating plate have a large height change, which can be directly reflected from the indicating device, and there are still certain safety hazards

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