The invention discloses a nondestructive contact type rail fastener bolt loosening length detection system and detection method. The system comprises a detection vehicle and a detection sensor arranged on the detection vehicle. The detection vehicle runs along the track, the detection sensor comprises a contact probe and a sliding variable resistor, the contact probe is elastically arranged in a telescopic mode and comprises a contact part and a telescopic moving part, and the contact part of the contact probe touches fastener bolts on the two sides of the track in the process that the detection sensor runs along with the detection vehicle; the telescopic moving part is connected with a resistance value regulator of the sliding variable resistor, the contact probe changes the resistance value of the sliding variable resistor in the process of touching the fastener bolt, the specific loosening length value of the fastener bolt is detected according to the current signal change caused by the resistance value change during contact, and automatic detection of the loosening length of the rail fastener bolt is achieved. The method has the advantages of being high in detection efficiency, reliable in detection result, low in detection cost and high in environmental adaptability.

    本发明公开了一种无损接触式轨道扣件螺栓松动长度检测系统及检测方法,包括检测车以及设置在检测车上的检测传感器;所述检测车沿轨道行驶,所述检测传感器包括接触探头和滑动可变电阻,所述接触探头弹性伸缩设置,包括接触部和伸缩移动部,其接触部在检测传感器随检测车行驶的过程中碰触轨道两侧扣件螺栓,伸缩移动部与滑动可变电阻的阻值调节器连接,所述接触探头在触碰扣件螺栓过程中改变滑动可变电阻的阻值,根据接触时电阻值变化带来的电流信号变化来检测扣件螺栓的具体松动长度值,实现轨道扣件螺栓松动长度的自动化检测。本发明具有检测效率高、检测结果可靠、检测成本低和环境适应性强的特点。


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    Title :

    Lossless contact type rail fastener bolt loosening length detection system and detection method


    Additional title:

    无损接触式轨道扣件螺栓松动长度检测系统及检测方法


    Contributors:
    SHAN ZHI (author) / PENG JINPIAO (author) / YU ZHIWU (author) / DOU HAOLEI (author) / WU JUN (author)

    Publication date :

    2024-12-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / B61K Andere Hilfseinrichtungen für Eisenbahnen , OTHER AUXILIARY EQUIPMENT FOR RAILWAYS / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES



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