| 摘要 |
PROBLEM TO BE SOLVED: To cope with various load postures or load storage spaces by providing a height correcting means capable of changing a correction height stored in a target height setting means by the instruction of an operator. SOLUTION: When a desired step of a step selecting switch 25a is turned ON, and an instruction switch 25b is turned ON, the height H at that time is incorporated a target height setting means 25 and stored as an n-step load receiving height in the target height setting means 25. To set an independent correction height every step, an independent switch 27e is turned ON. When the independent switch 27e is turned ON, the step to be set by the step selection switch 25a of the target height setting means 25 is selected, and the independent correction height from the load receiving position is set by an increase switch 27b or a decrease switch 27c according to the respective step. When the instruction switch 25b of the target height setting means 25 is then turned ON, the target height setting means 25 takes in and stores the independent correction height.
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