Abstract: A work assist system for a self-propelled hydraulic excavator includes a controller (18) configured to determine a region in which an assumed excavation amount is obtained from an object to be excavated by one excavation operation of the hydraulic excavator (1) as a region to be excavated S on the basis of the assumed excavation amount in the one excavation operation of the hydraulic excavator (1), and to calculate a work position Pw of the hydraulic excavator (1) at which the hydraulic excavator (1) performs a next excavation operation on the basis of the region to be excavated S. A distance Lw from the hydraulic excavator to the work position Pw is calculated by the controller (18) and this distance Lw is displayed on the monitor (21).

Abstract: A work machine operation assistance device enables setting of a manipulation gain appropriate for a skill level and habits of an operator and/or actual work contents.

Abstract: A dual-arm work machine includes: a first front working machine to which a first attachment is mounted; a second working machine to which a second attachment is mounted; a first drive device that drives the first front working machine and the first attachment based on a first drive command from a first operation member; a second drive device that drives the second front working machine and the second attachment based on a second drive command from a second operation member; and a drive command output device that inputs the first and second drive commands, and generates and outputs a shared drive command that drives the first and second drive devices.

Abstract: A dual-arm work machine includes: a first front working machine to which a first attachment is mounted; a second working machine to which a second attachment is mounted; a first drive device that drives the first front working machine and the first attachment based on a first drive command from a first operation member; a second drive device that drives the second front working machine and the second attachment based on a second drive command from a second operation member; and a drive command output device that inputs the first and second drive commands, and generates and outputs a shared drive command that drives the first and second drive devices.

Abstract: A construction machine includes: a work arm rotatably mounted at a construction machine main body; a work tool mounted at the work arm; an attitude decision device that decides an attitude of the work arm or the work tool relative to the construction machine main body; a follow-up enabling device that allows the work arm or the work tool to follow a displacement of a contacting object that comes into contact with the work tool and applies an external force to the work tool, by adjusting the attitude of the work arm or the work tool decided by the attitude decision device; and a switching device that selects whether or not to allow the work arm or the work tool to follow the displacement of the contacting object via the follow-up enabling device.

Abstract: A double-arm working machine has an upper swing structure, an operator cabin, left swing post and right swing post provided in front of the upper swing structure, and a left work front A and right work front B provided on the left swing post and the right swing post, respectively, such that the work fronts A, B each sway vertically. An interference prevention controller generates an output signal to swing the swing posts 7a, 7b pursuant to a differential angle between the left and right work fronts A, B and to a command signal from an operating device. A differential angle range in which the left and right work fronts A, B are likely to come into contact with each other is defined as an interference danger area (N), and an assigned differential-angle range contiguous to the interference danger area is defined as a semi-interference danger area.

Abstract: A construction machine includes: a work arm rotatably mounted at a construction machine main body; a work tool mounted at the work arm; an attitude decision device that decides an attitude of the work arm or the work tool relative to the construction machine main body; a follow-up enabling device that allows the work armor the work tool to follow a displacement of a contacting object that comes into contact with the work tool and applies an external force to the work tool, by adjusting the attitude of the work arm or the work tool decided by the attitude decision device; and a switching device that selects whether or not to allow the work arm or the work tool to follow the displacement of the contacting object via the follow-up enabling device.

Abstract: A double-arm working machine has an upper swing structure, an operator cabin, left swing post and right swing post provided in front of the upper swing structure, and a left work front A and right work front B provided on the left swing post and the right swing post, respectively, such that the work fronts A, B each sway vertically. An interference prevention controller generates an output signal to swing the swing posts 7a, 7b pursuant to a differential angle between the left and right work fronts A, B and to a command signal from an operating device. A differential angle range in which the left and right work fronts A, B are likely to come into contact with each other is defined as an interference danger area (N), and an assigned differential-angle range contiguous to the interference danger area is defined as a semi-interference danger area.

Abstract: A construction machine includes: a work arm rotatably mounted at a construction machine main body; a work tool mounted at the work arm; an attitude decision device that decides an attitude of the work arm or the work tool relative to the construction machine main body; a follow-up enabling device that allows the work armor the work tool to follow a displacement of a contacting object that comes into contact with the work tool and applies an external force to the work tool, by adjusting the attitude of the work arm or the work tool decided by the attitude decision device; and a switching device that selects whether or not to allow the work arm or the work tool to follow the displacement of the contacting object via the follow-up enabling device.