To provide a lock device providing a movable rail at a contraction position from unexpectedly expanding in an expansion rail device.SOLUTION: A lock device 3 includes a main body 4 and a stopper key 5. The main body 4 includes a frame 6, a stopper member 7 pivoted by the frame, and a stopper block 8 freely moving in the frame 6 to restrict and release it at the lock position. The frame 6 includes an insertion hole 63 including a withdrawal hole portion 63a and a moving hole portion 63b. The stopper block 8 includes a penetrate hole 8a corresponding to the withdrawal hole 63a. The stopper key 5 is penetrated from the withdrawal hole portion 63a to the penetrate hole 8a of the stopper block 8 at the restriction position, and can be moved to a release position with the stopper block 8 in the moving hole portion 63b, but cannot be withdrawn.SELECTED DRAWING: Figure 8

    【課題】伸縮レール装置において、収縮位置にある可動レールが、予期せずに伸張動作するのを防止するロック装置を提供する。【解決手段】ロック装置3は、本体4と、ストッパキー5とを具備する。本体4は、フレーム6と、これに枢支されるストッパ部材7と、これをロック位置に拘束、解放するようにフレーム6内で移動自在のストッパブロック8とを具備する。フレーム6は、抜き差し孔部63aと移動孔部63bとからなる挿通孔63を具備し、ストッパブロック8は、抜き差し孔部63aに対応する貫通孔8aを具備する。拘束位置にあるストッパブロック8の貫通孔8aに抜き差し孔部63aから、ストッパキー5を貫通させ、移動孔部63b内をストッパブロック8を伴って解放位置まで移動できるが、抜き差しできない。【選択図】図8


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    Title :

    LOCK DEVICE OF EXPANSION RAIL DEVICE FOR RAILWAY WORK VEHICLE


    Additional title:

    鉄道作業車両用伸縮レール装置のロック装置


    Contributors:

    Publication date :

    2021-09-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    E01B PERMANENT WAY , Gleisoberbau / B61J Verschieben oder Rangieren von Schienenfahrzeugen , SHIFTING OR SHUNTING OF RAIL VEHICLES



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