Derailment detection mechanism of the transport truck

摘要

PURPOSE: To prevent a carrying truck from traveling in a derailing state by providing each wheel with a limit switch actuated through floating up from the track face of the wheel above a fixed value to precisely detect the derailment from a track of a carrying truck, and stopping a self-traveling motor when the derailment is detected. ;CONSTITUTION: A carrying trucking to carry concrete in the execution site of a concrete dam has main wheels 6 interlocked with a motor not shown in a drawing below a truck body 4, and travels on a track 16 by he torque of the main wheels 6. In this case, the first and the second arm 7, 8 are extendingly provided from the support shaft of the main wheel 6 in the longitudinal traveling direction, and an auxiliary wheel 10 rolling on the track is rotatably attached to the tip of the arm 7. On the other hand, the tip of the arm 8 is engaged with the switch lever 12 of a limit switch 11, and the auxiliary wheel 10 is energized by a spring 15 in the direction where it is pressed against the track, and the limit switch 11 is actuated by the oscillation due to derailment of the arms 7, 8 to stop a traveling motor.;COPYRIGHT: (C)1993,JPO&Japio