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Non-contact wheel set dimension online detection method and system

A non-contact and detection method technology, which is applied in the direction of rim measurement/measurement, measuring devices, instruments, etc., can solve the problems of low measurement accuracy and complicated installation of the measurement system, and achieve simple operation, low cost, improved measurement accuracy and The effect of stability

Inactive Publication Date: 2016-11-09
NANJING UNIV OF SCI & TECH
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Problems solved by technology

However, in the process of wheel set size detection, there are still problems such as complex installation of the measurement system and low measurement accuracy.

Method used

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  • Non-contact wheel set dimension online detection method and system
  • Non-contact wheel set dimension online detection method and system
  • Non-contact wheel set dimension online detection method and system

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Embodiment

[0057] combine figure 2 , image 3 , Figure 4 , Figure 5 , two laser through-beam sensors are installed side by side along both sides of the track, and the installation distance between them is L 1 is 100mm, and the two laser through-beam sensors form an angle of 30° and 15° with the plumb line respectively, then α 1 、α 2 30° and 15° angles, respectively. 2D laser displacement sensor 4 and 1D laser displacement sensor 3 are installed on both sides of the track at angles of 45° and 30° to the plumb line respectively, then α 3 、α 4 are 45° and 30° angles respectively, and the 2D laser displacement sensor 4 is installed at an angle of 45° to the longitudinal horizontal line along the track direction, then β 1 is 45°, and the sampling interval of the 2D laser displacement sensor 4 and the 1D laser displacement sensor 3 is 33ms.

[0058] First record the time when the laser beam sensor 1 and the laser beam sensor 2 are blocked by the wheels are 418ms and 321ms respective...

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Abstract

The invention discloses a non-contact wheel set dimension online detection method and system. A 2D laser displacement sensor and a 1D laser displacement sensor are arranged along the outer side and the inner side of a track correspondingly, and a speed measurement sensor is arranged along the track; two laser opposite emitting sensors are arranged on the two sides of the same track according to the geometrical relationship; the sensors detect and acquire the distance between a partial tread surface contour line at the vertex of a wheel rim and the end surface of a wheel on the inner side of the track as well as the wheel passing speed; the two laser opposite emitting sensors detect the chord length of a circle where the vertex of the wheel rim is located; the height and the thickness of the wheel rim are worked out according to the geometrical relationship by extracting the partial tread surface contour line of the wheel passing the detection system as well as the distance between the 1D laser displacement sensor and the end surface of the wheel on the inner side of the track; and the diameter of the circle where the vertex of the wheel rim is located is obtained by extracting the chord length of the circle of the vertex of the wheel rim at the two laser opposite emitting sensors, and the wheel rim vertex diameter minus two times of the wheel rim height is the wheel diameter. The non-contact wheel set dimension online detection method and system have the advantages of being low in cost, easy to operate and high in non-contact measurement precision.

Description

technical field [0001] The invention belongs to the technical field of traffic safety engineering, in particular to a method and system for non-contact wheel set size on-line detection. Background technique [0002] With the rapid development of social economy and the rapid deepening of urbanization in our country, urban traffic has become a prominent problem restricting the rapid development of cities in our country. As the main carrier of urban rail transit, the safe and reliable operation of trains directly affects the reliability, safety and operational efficiency of urban rail transit systems. As an important part of the train running system, the wheel set constantly rubs against the surface of the rail and the inner side of the rail during the operation of the train, causing wear on the tread and rim of the wheel set, and changes in the outer dimensions of the wheel set, which will reduce operational safety and passenger safety. comfort and increase the risk of derail...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61K9/12G01B11/00G01B11/10
CPCB61K9/12G01B11/00G01B11/10
Inventor 王贵史一露贾竹君陈雅婧邢宗义
Owner NANJING UNIV OF SCI & TECH
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