Abstract: A work machine includes: an informing device that informs an operator; an input device for inputting predetermined information; a notification device that gives a notification to a worker around the work machine; a controller; and a communication device that communicates with a mobile terminal carried by the worker.

Abstract: The line-of-sight direction of an operator is estimated on the basis of the posture of a front work device detected by a posture sensor, and plural display regions are set on a screen of a transparent display on the basis of the estimated line-of-sight direction of the operator. Then, the display position of a display image is calculated in such a manner that the display position is located in the display region corresponding to the kind of the display image in the set plural display regions.

Abstract: An operator of a hydraulic excavator and a worker working outside of the hydraulic excavator carry a worker tag that sends a radio-wave signal including a magnetic field ID, a tag ID, and positional information obtained by a GNSS receiving section in case the worker tag receives a magnetic field signal generated by a magnetic field detecting device mounted on the hydraulic excavator. Based on positional information of the hydraulic excavator that is obtained from an GNSS receiving device and positional information of the worker tag, the position of the worker tag is calculated. In case the worker tag is detected in a proximity notification target area, a notification command is generated for notifying the operator of the hydraulic excavator of the detection of the worker tag, and output to a notification device in the cabin of the hydraulic excavator. Thus, a worker who is in proximity to the work machine is accurately detected, and the operator is prevented from being excessively alerted.

Abstract: The line-of-sight direction of an operator is estimated on the basis of the posture of a front work device detected by a posture sensor, and plural display regions are set on a screen of a transparent display on the basis of the estimated line-of-sight direction of the operator. Then, the display position of a display image is calculated in such a manner that the display position is located in the display region corresponding to the kind of the display image in the set plural display regions.

Abstract: A mode selecting device configured to select a work mode of a hydraulic excavator, a work determining section configured to determine whether work contents of the hydraulic excavator are work contents other than those of the selected work mode on the basis of a detection result of pilot pressure sensors, a minimum alarm region determining section configured to determine one of a plurality of minimum alarm regions preset on the periphery of the hydraulic excavator on the basis of a selection result of the mode selecting device and a determination result of the work determining section, and an alarm determining section configured to output an alarm signal to a buzzer when the relative position of an obstacle, the relative position being computed by an obstacle position calculating section, is inside an alarm region set so as to include the minimum alarm region determined by the minimum alarm region determining section.

Abstract: A mode selecting device configured to select a work mode of a hydraulic excavator, a work determining section configured to determine whether work contents of the hydraulic excavator are work contents other than those of the selected work mode on the basis of a detection result of pilot pressure sensors, a minimum alarm region determining section configured to determine one of a plurality of minimum alarm regions preset on the periphery of the hydraulic excavator on the basis of a selection result of the mode selecting device and a determination result of the work determining section, and an alarm determining section configured to output an alarm signal to a buzzer when the relative position of an obstacle, the relative position being computed by an obstacle position calculating section, is inside an alarm region set so as to include the minimum alarm region determined by the minimum alarm region determining section.

Abstract: An operator of a hydraulic excavator and a worker working outside of the hydraulic excavator carry a worker tag that sends a radio-wave signal including a magnetic field ID, a tag ID, and positional information obtained by a GNSS receiving section in case the worker tag receives a magnetic field signal generated by a magnetic field detecting device mounted on the hydraulic excavator. Based on positional information of the hydraulic excavator that is obtained from an GNSS receiving device and positional information of the worker tag, the position of the worker tag is calculated. In case the worker tag is detected in a proximity notification target area, a notification command is generated for notifying the operator of the hydraulic excavator of the detection of the worker tag, and output to a notification device in the cabin of the hydraulic excavator. Thus, a worker who is in proximity to the work machine is accurately detected, and the operator is prevented from being excessively alerted.

Abstract: Provided is a controller (50) that includes a mechanical state acquisition section (400) that acquires information regarding a posture and an operation of a hydraulic excavator; a blind angle calculation section (500) that calculates a blind angle area from a seat in a cab (1f) of the hydraulic excavator based on the information indicating the posture and the operation of the hydraulic excavator and acquired by the mechanical state acquisition section (400); and a visibility level determination section (300) that determines a visibility level of an obstacle based on the blind angle area calculated by the blind angle calculation section (500) and a positional relationship calculated by a position relation calculation section (200). Further, a warning level determination section (600) of the controller (50) adjusts a warning level in accordance with the visibility level determined by the visibility level determination section (300).

Abstract: Provided is a controller (50) that includes a mechanical state acquisition section (400) that acquires information regarding a posture and an operation of a hydraulic excavator; a blind angle calculation section (500) that calculates a blind angle area from a seat in a cab (1f) of the hydraulic excavator based on the information indicating the posture and the operation of the hydraulic excavator and acquired by the mechanical state acquisition section (400); and a visibility level determination section (300) that determines a visibility level of an obstacle based on the blind angle area calculated by the blind angle calculation section (500) and a positional relationship calculated by a position relation calculation section (200). Further, a warning level determination section (600) of the controller (50) adjusts a warning level in accordance with the visibility level determined by the visibility level determination section (300).

Abstract: A construction machine includes: a guidance apparatus having a guidance display section for displaying a target surface for an object to be worked on by a work implement based on predetermined design data with respect to the object to be worked on by the work implement and positional information of the work implement and displaying the positional information of the work implement on a guidance monitor in a cabin of the construction machine; and an obstacle detecting apparatus having an obstacle position acquisition section for acquiring positional information of an obstacle detected around the construction machine. The guidance display section of the guidance apparatus displays the positional information of the obstacle acquired by the obstacle position acquisition section of the obstacle detecting apparatus on the guidance monitor. Thus, while viewing the screen of the guidance apparatus, it is possible to present the operator reliably with real-time information of the obstacle.