Quick geometrical state measuring instrument for track

Abstract

The invention discloses a quick geometrical state measuring instrument for a track. The quick geometrical state measuring instrument for the track comprises a hand-propelled track inspection trolley, an inertial navigation system, an inclination angle sensor, a linear displacement sensor, a speed and mileage sensor, an intelligent total station and a data acquisition controller, wherein a main body of the quick geometrical state measuring instrument for the track is the hand-propelled track inspection trolley which can walk along the track; sensors for detecting a speed, mileage, a track space, an inclination angle and the like, the inertial navigation system, the intelligent total station and the data acquisition controller are integrated on the hand-propelled track inspection trolley. The quick geometrical state measuring instrument for the track is based on the principle of combining absolute measurement with relative measurement, the geometrical ride comfort evaluation parameters, such as the mileage, the track space, the levelness, the twist warp, the track direction and the height of the track, and the absolute deviations of the plane and the elevation of the track can be detected in real time. By using the quick geometrical state measuring instrument for the track, the detection of the parameters of the track is realized through the inertial navigation system; the absolute constraint is carried out through the intelligent total station; the quick geometrical state measuring instrument for the track is high in precision and quick in speed, and is influenced less by an external environment.

Description

technical field [0001] The invention relates to a track detection device, in particular to a track geometric state rapid measuring instrument. Background technique [0002] With the increase of train speed, the requirements for the geometric state of the railway track are also increasing. In order to ensure the safety of freight trains and the comfort of passenger trains, the geometric irregularities of long tracks, which were not obvious in the past, gradually appeared with the increase of train speed. Track irregularity is an external disturbance to the train vehicle system, and it is the main source of vibration and even derailment of the running part of the vehicle. Moreover, the poor track smoothness will also cause a strong impact on the contact surface of the train wheel and rail, which will accelerate the wear and tear of the wheel and rail, and pose a potential threat to driving safety. [0003] At present, in the track inspection equipment, the trolley-type track...

AI Technical Summary

Problems solved by technology

However, the general gyroscope has low precision, which makes the cumulative error of the detection data large, and the calibration operation is difficult, and the measurement accuracy cannot meet the requirements of the speed-up line at all.

The traditional track geometric state measuring instrument is a pure absolute measuring device. It uses an intelligent total station to measure the absolute position of the track, and then calculates the track direction and smoothness parameters of the track. The accuracy is high, but the measurement efficiency is very low

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