| 摘要 |
PROBLEM TO BE SOLVED: To provide an extension state monitor device capable of setting an outrigger jack in a proper elongation state.SOLUTION: An extension state monitoring device for an outrigger jack comprises: load measuring means 81 for measuring a load applied to an outrigger jack 26; control means 70 for receiving input of the measurement result of the load measuring means 81; and warning means 82 connected to the control means 70. The control means 70 decides, when the load measured by the load measuring means 81 does not vary, that the outrigger jack 26 is in an over-extended state, and operates the warning means 82. The control means can detect that the wheels of a working vehicle have floated, and issues a warning when the outrigger jack 26 is in an over-extended state, so that the outrigger jack 26 can be shrunken to a proper extended state. |
