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1. (WO2018043659) CRANE VEHICLE

Pub. No.:    WO/2018/043659    International Application No.:    PCT/JP2017/031417
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Fri Sep 01 01:59:59 CEST 2017
IPC: B66C 23/88
B66C 13/40
Applicants: TADANO LTD.
株式会社タダノ
Inventors: NISHIMOTO, Shoji
西本 昌司
Title: CRANE VEHICLE
Abstract:
[Problem] To be able to detect overwinding and transmit and receive information on a single line, and prevent emission of radio waves in advance. [Solution] A crane vehicle comprises a traveling body 20, a turning body 40, a boom 50, and a signal line SL. The traveling body 20 and the turning body 40 have a battery 24 and a first control circuit 60. The boom 50 has an overwinding switch SW and a second control circuit 70. The first control circuit 60 has an electromagnetic relay 62, a stop circuit 64, and a first modulation-demodulation circuit 66 and the second control circuit 70 has a second modulation-demodulation circuit 76, and a second power source circuit 71. When the overwinding switch SW is in an opened state, the electromagnetic relay 62 is in a closed state. When the electromagnetic relay 62 is in a closed state, the stop circuit 64 stops driving of the first modulation-demodulation circuit 66. In addition, when the overwinding switch SW is in the opened state, the supply of DC voltage to the second modulation-demodulation circuit 76 from the second power source circuit 71 is stopped. As a result, the emission of radio waves is prevented in advance.