JPS63196776U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the safety device for a level crossing barrier according to the present invention, Fig. 2 is a front view showing an example of the level crossing barrier, and Fig. 3 is a cross section taken along the line X--X of Fig. 1. 4 and 5 are a plan view and a front view of the failure detection switch used in this embodiment. FIG. 6 is a front view showing one failure state of the level crossing blocking rod, and
8 are a plan view and a front view showing the operating state of the failure detection switch in the failure state shown in FIG. 6, FIG. 9 is a front view showing another failure state of the level crossing blocking rod, and FIG. FIG. 9 is a front view showing the operating state of the failure detection switch 4 in the failure state shown in FIG. 11 is a circuit diagram showing the relationship between the failure detection switch and the relay activated by it, and FIG. A block diagram showing an example of the management system, and FIGS. 13 to 15 are front views showing different operating states of other examples of the failure detection switch. 2...Level crossing blocking rod, 4...Wire, 6...Wire fixture, 8...Spring, 9...Failure detection switch.

Claims (1)

[Scope of utility model registration request] A wire that is attached to a railroad crossing barrier and has one end fixed to the railroad crossing barrier, a spring that applies tension to the wire at the other end of the wire, and movement of the wire due to changes in the tension acting on the wire. A safety device for a level crossing barrier comprising a failure detection switch that operates to detect a failure.