Abstract: At the time of starting up an engine (9) using an assist motor generator (10), a main controller (28) lowers a lower limit value in a charge/discharge range of an electricity storage device (19) from a first lower limit value (min1) to a second lower limit value (min2) through an energy management control part (28B). The main controller (28) heightens the lower limit value in the charge/discharge range of an electricity storage device (19) from the second lower limit value (min2) to the first lower limit value (min1) when the start of the engine (9) is completed. Further, the main controller (28) displays engine stop prohibition information on a display device (30) when the start of the engine (9) is completed and when an SOC of the electricity storage device (19) falls below the first lower limit value (min1).

Abstract: Both a hydraulic motor and an electric motor are provided for driving an upper swing structure. When the amount of electricity stored in a capacitor is appropriate, the upper swing structure is driven by both the hydraulic motor and the electric motor. When the amount of electricity stored in the capacitor exceeds an appropriate value, the mode is changed over to a mode in which the upper swing structure is driven only by the hydraulic motor, and an assist electric generation motor is assist-driven or engine-driven to thereby rapidly return the amount of electricity stored in the capacitor to an appropriate range. The capacity of the capacitor can be reduced, and the amount of electricity stored in the capacitor can be managed without losing the operability of swing motion.

Abstract: A work machine includes a swing hydraulic motor and a swing electric motor for driving an upper swing structure. A capacitor supplies electricity to the swing electric motor and an operating device outputs through one operation, an operating signal for concurrently operating the swing hydraulic motor and the swing electric motor. A main controller switches between a hydraulic-alone drive mode and an electric-alone drive mode, the hydraulic-alone drive mode being a mode to drive only the swing hydraulic motor selected from the swing hydraulic motor and the swing electric motor when the operating device is operated, the electric-alone drive mode being a mode to drive only the swing electric motor selected from the swing hydraulic motor and the swing electric motor when the operating is operated. Therefore, the actuator that malfunctions can easily be specified among the plurality of mounted actuators.

Abstract: A hybrid-type construction machine is provided which permits swing operation without a sense of awkwardness compared with conventional construction machines and which allows the amount of stored electricity in an electrical storage device to be controlled within an appropriate range of use in consideration of the service life of the electrical storage device without enlarging its capacity. The hybrid-type construction machine includes an electric motor and a hydraulic motor for driving a swing structure, an electrical storage device, and a controller for controlling charging and discharging of the electrical storage device.

Abstract: A work machine includes a swing hydraulic motor and a swing electric motor for driving an upper swing structure. A capacitor supplies electricity to the swing electric motor and an operating device outputs through one operation, an operating signal for concurrently operating the swing hydraulic motor and the swing electric motor. A main controller switches between a hydraulic-alone drive mode and an electric-alone drive mode, the hydraulic-alone drive mode being a mode to drive only the swing hydraulic motor selected from the swing hydraulic motor and the swing electric motor when the operating device is operated, the electric-alone drive mode being a mode to drive only the swing electric motor selected from the swing hydraulic motor and the swing electric motor when the operating is operated. Therefore, the actuator that malfunctions can easily be specified among the plurality of mounted actuators.

Abstract: An electric operating system for a construction machine includes a first insulation resistance degradation detection device including a first voltage waveform generation device and a first detection section. The first detection section is connected to an electrical storage device and to the first voltage waveform generation device with respect to a relay and is adapted to detect degradation in the insulation resistance of the electrical storage device by measuring waveform changes input from the first voltage waveform generation device. A second insulation resistance degradation detection device includes a second voltage waveform generation device and a second detection section connected to a drive system and to the second voltage waveform generation device with respect to the relay, and is adapted to detect degradation in the insulation resistance of the drive system by measuring waveform changes input from the second voltage waveform generation device.

Abstract: A hybrid-type construction machine is provided which permits swing operation without a sense of awkwardness compared with conventional construction machines and which allows the amount of stored electricity in an electrical storage device to be controlled within an appropriate range of use in consideration of the service life of the electrical storage device without enlarging its capacity. The hybrid-type construction machine includes an electric motor and a hydraulic motor for driving a swing structure, an electrical storage device, and a controller for controlling charging and discharging of the electrical storage device.

Abstract: To provide a hybrid type construction machine in which work can be kept on even if the amount of electricity stored in an electric storage device is out of an appropriate value. Both a hydraulic motor 27 and an electric motor 25 are provided for driving an upper swing structure 20. When the amount of electricity stored in a capacitor 24 is appropriate, the upper swing structure 20 is driven by both the hydraulic motor 27 and the electric motor 25. When the amount of electricity stored in the capacitor 24 exceeds an appropriate value, the mode is changed over to a mode in which the upper swing structure 20 is driven only by the hydraulic motor 27, and an assist electric generation motor 23 is assist-driven or engine-driven to thereby rapidly return the amount of electricity stored in the capacitor 24 to an appropriate range. The capacity of the capacitor 24 can be reduced, and the amount of electricity stored in the capacitor can be managed without losing the operability of swing motion.

Abstract: A device diagnostic apparatus (201) comprising: data judgment means (101) for, when device information (121) including operating condition information and internal state information is inputted, comparing the operating condition information of the device information with operating condition information stored in a database (111) beforehand to judge whether or not both of the operating condition information agree with each other, and then outputting judgment result information; and state diagnosis means (103) for, when the judgment result information indicates that both of the operating condition information agree with each other, comparing the internal state information in the device information with internal state information stored in the database beforehand, and then outputting the result of the comparison. This makes it possible to reduce the possibility that false judgment result will be output, and to achieve the efficiency of maintenance work.

Abstract: The invention provides an abnormal operation detection device estimating an overload operation of a hydraulic shovel on the basis of an amount of hydraulic operation. An accumulated amount of an operation amount is calculated by an accumulated amount calculating means on the basis of an operation amount of each of operation mechanisms obtained by an operation pressure detecting means, an operation fluctuation amount is calculated by a fluctuation amount calculating means, a joint angle of each of the operation mechanisms is estimated on the basis of the accumulated amount, and an overload operation is determined by using an abnormal operation determining means on the basis of the estimated joint angle and the operation fluctuation amount.

Abstract: An information supply apparatus for a construction machine is adapted to enhance alarm/trouble cause checking accuracy. A user-side personal computer 4 or other apparatus, remote from a hydraulic excavator 1, acquires chronological data relating to alarm/trouble occurrence information on the hydraulic excavator 1, chronological data relating to engine on/off and engine key switch on/off information, and chronological data relating to operational-state physical quantities.

Abstract: The invention provides an abnormal operation detection device estimating an overload operation of a hydraulic shovel on the basis of an amount of hydraulic operation. An accumulated amount of an operation amount is calculated by an accumulated amount calculating means on the basis of an operation amount of each of operation mechanisms obtained by an operation pressure detecting means, an operation fluctuation amount is calculated by a fluctuation amount calculating means, a joint angle of each of the operation mechanisms is estimated on the basis of the accumulated amount, and an overload operation is determined by using an abnormal operation determining means on the basis of the estimated joint angle and the operation fluctuation amount.

Abstract: A device diagnostic apparatus (201) comprising: data judgment means (101) for, when device information (121) including operating condition information and internal state information is inputted, comparing the operating condition information of the device information with operating condition information stored in a database (111) beforehand to judge whether or not both of the operating condition information agree with each other, and then outputting judgment result information; and state diagnosis means (103) for, when the judgment result information indicates that both of the operating condition information agree with each other, comparing the internal state information in the device information with internal state information stored in the database beforehand, and then outputting the result of the comparison. This makes it possible to reduce the possibility that false judgment result will be output, and to achieve the efficiency of maintenance work.

Abstract: The transfer apparatus receives image data from the MFP (S11), and acquires processing information which indicates what data-processing has been performed on the image data by the MFP. Furthermore, the transfer apparatus performs additional processing on the image data based on the processing information and the destination (S12 and S15), and transmits this processed data to the destination (S13). According to the composition described above, the transfer apparatus that reduces the processing load while achieving the intended purpose of data-processing can be provided.

Abstract: The transfer apparatus receives image data from the MFP (S11), and acquires processing information which indicates what data-processing has been performed on the image data by the MFP. Furthermore, the transfer apparatus performs additional processing on the image data based on the processing information and the destination (S12 and S15), and transmits this processed data to the destination (S13). According to the composition described above, the transfer apparatus that reduces the processing load while achieving the intended purpose of data-processing can be provided.

Abstract: A liquid crystal display capable of preventing luminescent lines generated at the perimeter edge in the display area and fastening firmly sheets such as diffusion sheets to a resin frame. A lightproof tape is taped to cover the perimeter edge of the diffusion sheet and the upper side of a resin frame to fasten firmly the sheets to the resin frame. The lightproof tape prevents luminescent lines generated at the perimeter edge of the diffusion sheet, or at the perimeter edge of the display area in a liquid crystal display device and also prevents slippage of the diffusion sheet and the sheets. Furthermore, the lightproof tape omits two conventional manufacturing processes of black-frame printing and double-faced tape taping and consequently lowers a production cost because of a simplified process, whereby only the process of taping the lightproof tape is required.

Abstract: The invention is to provide novel liquid crystalline compounds exhibiting particularly high &Dgr;&egr;, excellent miscibility with other liquid crystalline compounds, and nematic phase in a wide temperature range without impairing characteristics peculiar to liquid crystalline compounds having fluorine atom; to provide liquid crystal compositions comprising the compound; and to provide liquid crystal display devices fabricated by using the composition; the compounds are phenylpolyhaloalkyl ether derivatives expressed by the general formula (1) 1