| 摘要 |
PROBLEM TO BE SOLVED: To provide a tilt angle controller of a forklift that can speedily find secular of an output signal value of a tilt angle detector and easily diagnose the output signal value. SOLUTION: The controller respectively previously detects and stores, as a forwardly tilting end angle, a tilt angle when a lever operation amount is an operation amount for forwardly tilting a fork and a state in which the tilt angle is constant continues for a predetermined certain time (Ts), and as a backwardly tilting end angle, a tilt angle when the lever operation amount is an operation amount for backwardly tilting the fork and the state in which the tilt angle is constant continues for a predetermined certain time (Ts), and detects abnormality of the tilt angle detector based on a comparison between the stored forwardly tilting end angle and backwardly tilting end angle, and a normal forwardly tilting end angle and a normal backwardly tilting end angle that are detected in a method same as the method of detecting the forwardly tilting end angle and the backwardly tilting end angle in a normal operation.
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