Title:
建設機械
Document Type and Number:
Japanese Patent JP5493135
Kind Code:
B2
Abstract:
Disclosed is a construction machine having an electric operating system. The electric operating system includes a first insulation resistance degradation detection device 90A, the detection device 90A including a first voltage waveform generation device 100A and a first detection section 99A, the first detection section 99A being connected to an electrical storage device 24 and to the first voltage waveform generation device 100A with respect to a relay 56 and adapted to detect degradation in the insulation resistance of the electrical storage device 24 by measuring waveform changes input from the first voltage waveform generation device 100A, and a second insulation resistance degradation detection device 90B, the detection device 90B including a second voltage waveform generation device 100B and a second detection section 99B, the second detection section 99B being connected to a drive system 55 and to the second voltage waveform generation device 100B with respect to the relay 56 and adapted to detect degradation in the insulation resistance of the drive system by measuring waveform changes input from the second voltage waveform generation device 100B.
Inventors:
Manabu Edamura
Hiroki Takenori
Masayuki Shiina
Koichi Shibata
Hiroki Takenori
Masayuki Shiina
Koichi Shibata
Application Number:
JP2011062990A
Publication Date:
May 14, 2014
Filing Date:
March 22, 2011
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
G01R31/02; E02F9/00; E02F9/24
Domestic Patent References:
| JP52041564A | ||||
| JP2005091224A | ||||
| JP2009109278A | ||||
| JP2009287983A |
Attorney, Agent or Firm:
Kasuga Toshiaki
Inoki Yuichi
Inoki Yuichi