To provide a crane capable of confirming instructed operation content before the start of operation and coping with malfunction in an early stage to suppress the occurrence of an accident.
The crane comprises a body 3, a trolley 5 and a hook block 7 for performing operation; a control panel 37 controlling these operations; and a pendant switch 43 having a plurality of push buttons for instructing separate operations respectively and operating the push buttons to transmit operation instruction signals DS to the control panel 37. A malfunction preventing control panel 39 is interposed between the control panel 37 and the pendant switch 43. The malfunction preventing control panel 39 is configured to carry out voice notification of the operation content of the operation instruction signal DS for a duration time Tk and to transmit the operation instruction signal DS to the control panel 37 after the end of the voice notification.
HARADA KENICHI
NAGAI TETSUYA
Kunio Ueda
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