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Detection method for restrictedly measuring track parameters and track checking instrument

A technology for track parameters and detection methods, which is applied to measurement devices, railway vehicle shape measuring instruments, instruments, etc., can solve problems such as the need to improve the accuracy, the limitation, and the inability to meet the on-site detection requirements of high-speed railways and existing speed-increasing lines. The effect of improving work efficiency, stable device performance and improving test accuracy

Active Publication Date: 2012-03-28
成都四方瑞邦测控科技有限责任公司
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the current traditional relative measurement methods can no longer meet the on-site inspection requirements of high-speed railways and existing speed-up lines.
[0003] In the current technology, the track constraint measurement generally uses the total station to cooperate with the track inspection trolley to measure the line coordinates, gauge and level. The detection accuracy can meet the detection requirements, but the accuracy needs to be improved, and its operation mode is to rely on the total station to automatically Track the track to check the trolley prism, measure statically or dynamically to determine the line coordinates, its main disadvantage is that the measurement distance of a station is limited by the effective measurement distance (10-70m) of the total station
The operating efficiency is 80-200m / h, which has a large gap with the actual application requirements on site

Method used

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  • Detection method for restrictedly measuring track parameters and track checking instrument
  • Detection method for restrictedly measuring track parameters and track checking instrument
  • Detection method for restrictedly measuring track parameters and track checking instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] The on-site measurement was carried out in the K46+15.951-K46+635.286 section of the Dujiangyan right branch line of the Chengguan High-speed Railway. The total length of the measured track is 620 meters (including straight lines, transitional curves and circular curves), divided into 3 sections, within a distance of 200-210 meters Continuous dynamic measurement, the continuous dynamic measurement sampling interval is 0.2083 meters, a total of 4 round trips are measured, of which the fourth round trip turns the track inspection trolley around 180°, and the measurement takes 35 minutes for a single pass. In the measured data, 152 points were selected at an interval of about 4 meters for analysis and the results are as follows:

[0069] Measuring repeatability:

[0070] Gauge: The measurement repeatability within the extreme difference of 0.45mm is 96.78%;

[0071] Level: the measurement repeatability within 0.45mm of the extreme difference is 95.82%;

[0072] Centerlin...

Embodiment 2

[0080] The on-site measurement was carried out again in the K46+15.951-K46+635.286 section of the Dujiangyan right branch line of the Chengguan High-speed Railway. The total length of the measured track is 620 meters, which is divided into 5 sections. The continuous dynamic measurement distance of each section is controlled between 120 and 130 meters. The sampling interval of the continuous dynamic measurement is 0.2083 meters, a total of 4 round trips are measured, and the fourth round trip is measured after the car is turned around. The single measurement time is 50 minutes. The selected point analysis results in the measured data are as follows in embodiment 1:

[0081] Measuring repeatability:

[0082] Gauge: The measurement repeatability within the range of 0.45mm is 96.85%;

[0083] Level: the measurement repeatability within 0.45mm of the extreme difference is 95.82%;

[0084] Centerline lateral deviation: measurement repeatability within 3mm of extreme difference is ...

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Abstract

The invention discloses a detection method for restrictedly measuring track parameters and track checking instrument. The detection method for restrictedly measuring track parameters comprises the following steps that: a total station accurately aims to a prism of a trolley for accurately measuring the absolute three-dimensional coordinates of the start and end points of the trolley; an encoder transmits pulse to trigger a strap down inertial sensor, a displacement sensor and a dip sensor to acquire data; and the acquired data are transmitted to a data controlling and processing system for processing to obtain the central line transverse deviation, the central line vertical deviation, the track distance and the track level. The track checking instrument for restrictedly measuring track parameters comprises a track checking trolley, a wireless communication element of the total station, the data controlling and processing system and the total station, wherein the total station is connected with the data controlling and processing system through the wireless communication element of the total station. Due to the adoption of the detection method for restrictedly measuring track parameters and the track checking instrument, the aim of measuring continually dynamically for a long distance is fulfilled, and the operation efficiency is greatly increased.

Description

technical field [0001] The invention belongs to the technical field of railway track installation quality detection and daily line maintenance detection, and in particular relates to a detection method and a track inspection instrument for constraint measurement of track parameters. Background technique [0002] High-speed railway is an inevitable trend in the development of railway transportation in the world today. To ensure the safety and quality of high-speed railway operation, it is necessary to establish more stringent operating standards and maintenance and repair models, and to be equipped with high-precision measurement control networks and sophisticated testing equipment. According to the performance indicators given in TB / T1347-2011 "Track Inspection Instrument" - the performance index of the draft for approval and the "Temporary Technical Conditions for Passenger Dedicated Line Track Geometric State Measuring Instrument" No. Including: (1) The absolute value of t...

Claims

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Application Information

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IPC IPC(8): B61K9/08G01B11/00
Inventor 傅勤毅何发明樊尚君楚建军李绍云文旭周晓东陈茂松
Owner 成都四方瑞邦测控科技有限责任公司
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