Abstract: A working machine control device includes a camera that obtains a captured image by imaging a particular part that is a part of a lower travelling body, and a controller, in which the controller includes a setting unit that sets a target slewing angle of an upper slewing body with respect to the lower travelling body, and a display control unit that causes a display unit to display a display screen in which a target image indicating a target position of the particular part is displayed in a superimposed manner at a position on the captured image, the position being where the particular part is displayed when a slewing angle of the upper slewing body with respect to the lower travelling body reaches the target slewing angle.

Abstract: A work content determination system determines a work content of a construction machine at a work site. This work content determination system includes: an image-capturing device that acquires an image including the construction machine at the work site; and an image processing device that determines the work content of the construction machine based on a time-series change in the image acquired by the image-capturing device and outputs the work content.

Abstract: A position specifying system includes: a detection unit detecting a parameter for specifying a posture of a specification target construction machine; a posture information generation unit generating posture information regarding a posture of the specification target construction machine based on the parameter; an image-capturing device acquiring an image including a plurality of construction machines at a work site; a posture estimation unit estimating a posture of each of the plurality of construction machines based on the image and generating posture estimation information regarding the posture having been estimated; a machine specifying unit specifying a construction machine corresponding to the posture information from among the plurality of construction machines by comparing the posture information with the posture estimation information; and an information output unit generating, based on the image, and outputting position information regarding a position of the construction machine having been specifi

Abstract: A compaction management system includes a position calculation unit that, when a bucket is pressed against a compaction target ground, calculates a position of the bucket, a rolling compaction force calculation unit that, when the bucket is pressed against the compaction target ground, calculates a rolling compaction force applied to the compaction target ground using the attitude of the machine body, the attitude of the attachment, a pressure of a cylinder, and dimensions of the attachment, a rolling compaction record creation unit that creates a rolling compaction record in which the position calculated by the position calculation unit is associated with the rolling compaction force calculated by the rolling compaction force calculation unit, and a storage control unit that causes a storage device to store the rolling compaction record created by the rolling compaction record creation unit.

Abstract: When at least one of a value a detected output current to a magnet and a magnet load defined by the following formula is equal to or larger than a threshold value predetermined for the value of the detected output current or a threshold value predetermined for the magnet load, a controller constituting a control device outputs, to a control circuit, a command to decrease voltage applied to the magnet from next attracting operation. Magnet load=excitation ratio×I×V . . . ; wherein excitation ratio: excitation time/(excitation time+non-excitation time); I: value of the output current; V: voltage applied to a lifting magnet.

Abstract: A working machine control device includes a camera that obtains a captured image by imaging a particular part that is a part of a lower travelling body, and a controller, in which the controller includes a setting unit that sets a target slewing angle of an upper slewing body with respect to the lower travelling body, and a display control unit that causes a display unit to display a display screen in which a target image indicating a target position of the particular part is displayed in a superimposed manner at a position on the captured image, the position being where the particular part is displayed when a slewing angle of the upper slewing body with respect to the lower travelling body reaches the target slewing angle.

Abstract: A detection apparatus includes a detection unit including: a sensor for detecting at least a shape; a storage section for storing shape information of a counterweight, which is a portion of a construction machine, detected by the sensor as mark shape information; a determination section for determining whether the mark shape information matches detected shape information that is shape information of the counterweight newly detected by the sensor; and a processing section for, when the determination section has determined that the mark shape information and the detected shape information do not match, determining whether the detected shape information satisfies a predetermined update condition and, when having determined that the update condition is satisfied, updating the mark shape information stored in the storage section with the detected shape information as new mark shape information

Abstract: A construction machine that, prior to performing a rewriting process of rewriting a currently used program with a renewal program, detects a charge amount of an electric storage device. When the charge amount detected is smaller than a rewrite charge amount preliminarily set as a charge amount required for the rewriting process, the rewriting is prohibited and the renewal program is transferred to storage. When the charge amount becomes sufficient, the rewriting process is performed using the renewal program stored in the storage.

Abstract: When at least one of a value a detected output current to a magnet and a magnet load defined by the following formula (1) is equal to or larger than a threshold value predetermined for the value of the detected output current or a threshold value predetermined for the magnet load, a controller constituting a control device outputs, to a control circuit, a command to decrease voltage applied to the magnet from next attracting operation. Magnet load=excitation ratio×I×V . . . (1); in which excitation ratio: excitation time/(excitation time+non-excitation time); I: value of the output current; V: voltage applied to a lifting magnet.

Abstract: An electric motor includes a stator having an outer peripheral surface including a plurality of projections and a housing having an inner peripheral surface including a plurality of recesses and holding the stator in a state of respective fits of the projections with the recesses. The housing is internally formed with a cooling channel, which includes a plurality of main channels each formed in an inter-recess region defined between circumferentially adjacent recesses and a connection channel axially shifted from a recess and extending across the recess to connect main channels adjacent across the recess. The electric motor is capable of effectively cooling a stator without upsizing.

Abstract: Simplification of a device configuration and control is realized, which enables attraction and release by a magnet without using a battery. A magnet work machine includes a generator motor (8) driven by an engine (7); and an inverter (10) which controls a magnet (6) and the generator motor (8) such that the magnet (6) is energized by electric power from the generator motor (8) to attract metal scraps or the like, and during demagnetization for releasing metal scraps or the like, electric power applied to the magnet (6) is transmitted to the generator motor (8) as regenerative power so as to be consumed. The inverter (10) determines a torque of the generator motor (8) as a motor according to a voltage change of a main circuit based on a detected main circuit voltage so as to suppress the voltage change, and gives the torque as a command.

Abstract: A malfunction diagnosing device that includes pistons arranged in a circumferential direction and discharges oil with rotation in the circumferential direction is provided, including: a pressure sensor for detecting a pressure value of oil discharged from a hydraulic pump in rotation; a speed sensor for detecting a rotation phase of the hydraulic pump at a time when a pressure value of oil is detected by the pressure sensor; a phase calculation part; and a rendering part for rendering a model of a relationship between pressure values of oil detected by the pressure sensor and rotation phases of the hydraulic pump detected by the speed sensor and the phase calculation part to thereby obtain pulsating waveform data. This makes it possible to diagnose a malfunction of the hydraulic pump without influence of a change in a rotation speed of the hydraulic pump.

Abstract: Simplification of a device configuration and control is realized, which enables attraction and release by a magnet without using a battery. A magnet work machine includes a generator motor (8) driven by an engine (7); and an inverter (10) which controls a magnet (6) and the generator motor (8) such that the magnet (6) is energized by electric power from the generator motor (8) to attract metal scraps or the like, and during demagnetization for releasing metal scraps or the like, electric power applied to the magnet (6) is transmitted to the generator motor (8) as regenerative power so as to be consumed. The inverter (10) determines a torque of the generator motor (8) as a motor according to a voltage change of a main circuit based on a detected main circuit voltage so as to suppress the voltage change, and gives the torque as a command.

Abstract: To prevent abnormal termination of a program rewriting process performed when an engine is stopped. A construction machine includes: an engine (13); an alternator (14) for generating an electric power by a power of the engine (13); an electric storage device (15) for storing the electric power generated by the alternator (14); a controller (12) for storing a currently used program, and performing a rewriting process of rewriting the currently used program with a renewal program using an electric power from the electric storage device (15) when the engine (13) is stopped; and a charge amount detection section (18e) for detecting a charge amount of the electric storage device (15). The controller (12) prohibits execution of the rewriting process when the charge amount detected by the charge amount detection section (18e) is smaller than a rewrite charge amount preliminarily set as a charge amount required for the rewriting process.

Abstract: A malfunction diagnosing device that includes pistons arranged in a circumferential direction and discharges oil with rotation in the circumferential direction is provided, including: a pressure sensor for detecting a pressure value of oil discharged from a hydraulic pump in rotation; a speed sensor for detecting a rotation phase of the hydraulic pump at a time when a pressure value of oil is detected by the pressure sensor; a phase calculation part; and a rendering part for rendering a model of a relationship between pressure values of oil detected by the pressure sensor and rotation phases of the hydraulic pump detected by the speed sensor and the phase calculation part to thereby obtain pulsating waveform data. This makes it possible to diagnose a malfunction of the hydraulic pump without influence of a change in a rotation speed of the hydraulic pump.

Abstract: An electric motor includes a stator having an outer peripheral surface including a plurality of projections and a housing having an inner peripheral surface including a plurality of recesses and holding the stator in a state of respective fits of the projections with the recesses. The housing is internally formed with a cooling channel, which includes a plurality of main channels each formed in an inter-recess region defined between circumferentially adjacent recesses and a connection channel axially shifted from a recess and extending across the recess to connect main channels adjacent across the recess. The electric motor is capable of effectively cooling a stator without upsizing.

Abstract: A compound represented by the following general formula (I), wherein R1 and R2 represent a hydrocarbon group having 1 to 26 carbon atoms, preferably a linear or branched alkyl group, R3 represents a hydrocarbon group having 7 to 10 carbon atoms, preferably a linear or branched alkyl group, n represents 1 or 2 provided that the acidic amino acid residue in the molecule is L-aspartic acid residue when n is 1 and said acidic amino acid residue is L-glutamic acid residue when n is 2, and a gelling agent for an oil comprising said compound.

Abstract: A compound represented by the following general formula (I), wherein R1 and R2 represent a hydrocarbon group having 1 to 26 carbon atoms, preferably a linear or branched alkyl group, R3 represents a hydrocarbon group having 7 to 10 carbon atoms, preferably a linear or branched alkyl group, n represents 1 or 2 provided that the acidic amino acid residue in the molecule is L-aspartic acid residue when n is 1 and said acidic amino acid residue is L-glutamic acid residue when n is 2, and a gelling agent for an oil comprising said compound

Abstract: A desired N-acylamino acid and a salt thereof can be produced efficiently and conveniently, almost without leaving any odor in the object product, by reacting amino acid or a salt thereof with a fatty acid halide under basic conditions in the presence of a phosphorus compound.

Abstract: A compound represented by the following general formula (I), wherein R1 and R2 represent a hydrocarbon group having 1 to 26 carbon atoms, preferably a linear or branched alkyl group, R3 represents a hydrocarbon group having 7 to 10 carbon atoms, preferably a linear or branched alkyl group, n represents 1 or 2 provided that the acidic amino acid residue in the molecule is L-aspartic acid residue when n is 1 and said acidic amino acid residue is L-glutamic acid residue when n is 2, and a gelling agent for an oil comprising said compound.