Working vehicle

摘要

A working vehicle configured to raise and lower one of a jib and a boom by using a wire rope wound around a winch, the working vehicle includes: a detection part provided on one of the jib and the boom and configured to detect an angle of one of the jib and the boom controlled to be raised and lowered to determine whether or not an overload detection condition occurs or to perform overload prevention control; an acquisition part configured to acquire the angle of one of the jib and the boom controlled to be raised and lowered, based on a feed length of the wire rope; and a determination part configured to determine that a failure occurs when a difference between the angle detected by the detection part and the angle acquired by the acquisition part exceeds a predetermined tolerance.

主权项

1. A working vehicle, comprising:
a boom provided on the working vehicle; a detachable jib being detachably attached to the boom; a winch where a wire rope being wound around and configured to raise and lower the detachable jib attached to the boom by using the wire rope; a detachable detection part provided on the detachable jib, configured to detach from the boom together with the detachable jib, having a conductive rotating weight and an arc-like resistance plate contacting with the conductive rotating weight at a varying location in accordance to an angle of the detachable jib, and configured to output a divided voltage of the resistance plate according to a contact location of the conductive rotating weight as a detected angle of the detachable jib for determining whether or not an overload detection condition occurs or to perform overload prevention control; an acquisition part configured to acquire the angle of the detachable jib based on a feed length of the wire rope from the winch; and a determination part configured to determine that a failure occurs when a difference between the angle detected by the detachable detection part and the angle acquired by the acquisition part exceeds a predetermined tolerance.