Abstract: Provided is a work machine control system which enables a worker to perform a work more easily in the vicinity of a work machine executing a task automatically. A work machine control system comprises: a work machine that executes a task automatically as a work to be executed; and a task control device for controlling execution of the task. The work machine comprises a vehicle body control device and a hydraulic actuator used for executing the task, wherein the vehicle body control device comprises: a task content input section for receiving input of task content information; a movement control section for calculating a speed instruction of the hydraulic actuator based on the task content information; a receiving section for receiving task control information outputted from the task control device having a task control input section for receiving input of the task control information; and a task control section for controlling execution of the task based on the task control information.

Abstract: The invention of the present application intends to provide a work machine that can ensure high operability by preventing abrupt actuation of an actuator and a shock to a machine body by use of a bleed-off function at the time of starting of the actuator and that can improve the energy-saving performance by reducing a bleed-off flow rate after the starting of the actuator. For this purpose, a controller opens a bleed-off valve at a timing at which an operation device is being operated and before a flow rate of a hydraulic pump starts increasing, and closes the bleed-off valve at a timing at which the operation device is being operated and after the flow rate of the hydraulic pump has started increasing.

Abstract: An object of the present invention is to provide a work management system that enables efficient extraction of approach events that are likely to result in contact between a work machine and a worker.

Abstract: A construction assisting system including a controller that performs construction assistance processing on the basis of positional relation between a worker and a hydraulic excavator, the construction assisting system including: an approach intention detecting device that detects an intention of the worker to approach the hydraulic excavator; an approach intention presenting device that presents a detection result of the approach intention detecting device to an operator of the hydraulic excavator; and an approach confirmation obtaining device that obtains a confirmation state of the operator of the hydraulic excavator for contents presented by the approach intention presenting device, the controller performing the construction assistance processing on the basis of position information of the worker when the operator of the hydraulic excavator denies the approach of the worker or when the operator of the hydraulic excavator does not confirm the intention of the worker to approach.

Abstract: A construction machine is provided that can cause each hydraulic actuator to accurately operate according to operation by an operator in combined operation in which a hydraulic fluid of a hydraulic pump is subjected to flow dividing and is supplied to plural hydraulic actuators. A controller 10, in a case of determining that combined operation is being carried out, controls a regulator 7a in such a manner that the delivery flow rate of a hydraulic pump 7 becomes larger than the total target flow rate of plural hydraulic actuators 4a, 5a, and 6a, and controls the respective opening amounts of plural directional control valves 8a1, 8a3, and 8a5 in such a manner that the difference between the respective target flow rates of the plural hydraulic actuators and the respective inflow flow rates of the plural hydraulic actuators sensed by velocity sensors 12 to 14 becomes small.

Abstract: In a hydraulic excavator including a track structure, a swing structure swingably disposed on an upper portion of the track structure, a work implement coupled to the swing structure, an earth removal device including a blade coupled to the track structure and a lift cylinder configured to raise and lower the blade, an operation sensor configured to detect an operation of a travelling lever, a height sensor configured to measure a height of the blade with respect to the track structure, an antenna for a satellite positioning system, the antenna being mounted on the swing structure, and a controller configured to calculate positional data regarding the blade, the controller is configured to determine a travelling operation on the basis of a signal of the operation sensor, calculate a travelling direction of straight forward travelling of the track structure as an orientation of the track structure when the straight forward travelling of the track structure is detected from a trajectory of the antenna with a st

Abstract: A working status indicating a status related to the present work of a hydraulic excavator 1 is determined on the basis of operation signals output from a control lever 24, posture information output from inertial measuring devices 27 to 30, load information output from pressure sensors 32 and 33, and a work area set by a display input device 26, an operation form indicating contents of an operation in operation correction control of a front work implement 12 is decided from a plurality of operation forms set in advance, according to the determined working status, and the operation correction control is performed such that the front work implement moves according to the operation form. Thus, an appropriate assisting operation can be performed in machine control, so that the work accuracy can be improved.

Abstract: To provide a work machine having a blade provided to a track structure, and a swing structure provided swingably on the upper side of the track structure, which work machine allows for computation of the horizontal coordinates of the blade. The work machine includes: a swing-structure-position acquiring device that acquires a horizontal coordinate and an orientation of the swing structure; a swing sensor that senses a swing of the swing structure; a travel sensor that senses travelling of the track structure; and a controller that computes an orientation of the track structure, and a horizontal coordinate of the blade.

Abstract: The invention of the present application intends to provide a work machine that can ensure high operability by preventing abrupt actuation of an actuator and a shock to a machine body by use of a bleed-off function at the time of starting of the actuator and that can improve the energy-saving performance by reducing a bleed-off flow rate after the starting of the actuator. For this purpose, a controller opens a bleed-off valve at a timing at which an operation device is being operated and before a flow rate of a hydraulic pump starts increasing, and closes the bleed-off valve at a timing at which the operation device is being operated and after the flow rate of the hydraulic pump has started increasing.

Abstract: Provided is a work machine and a control system for the work machine capable of preventing reduction of a work efficiency when inputting a complicated work area. The work machine includes a work area setting device 501, a work machine position/attitude acquisition device 502 and a work device position/attitude acquisition device 503, a controller 500, and a designated area setting device 504. When a hydraulic excavator (work machine) 1 intrudes on a designated area 401, the controller 500 puts operation restriction control in a work area 111 to an enabled state or disabled state according to an enable or disable setting of the operation restriction control depending on the designated area 401 set in the designated area setting device 504.

Abstract: The present invention intends to provide a risk management system that can accurately extract information necessary for analysis of a variety of accidents in which a machine is involved. For this purpose, a controller calculates a main risk that is the degree at which a main factor of an accident contributes to the occurrence of the accident on the basis of an evaluation value of the main factor, and calculates a subsidiary risk that is the degree at which a subsidiary factor of the accident contributes to the occurrence of the accident on the basis of an evaluation value of the subsidiary factor.

Abstract: A work machine includes: a work device; a posture sensor that senses posture information of the work device; a hydraulic actuator that drives the work device; and a controller configured to generate operation plan information on the basis of task information necessary for automatic control, the task information being obtained from an external system, and perform automatic control of the hydraulic actuator on the basis of the operation plan information and a sensing result of the posture sensor. The controller outputs the operation plan information to the external system. The controller does not perform the automatic control when an approval signal indicating that the operation plan information is approved is not input from the external system. The controller performs the automatic control when the approval signal is input from the external system.

Abstract: Provided is a work and function content change determination system that leaves a responsible person to make a determination whether or not to change work content and function content in a timely manner. A work and function content change determination system 35 is configured to determine whether or not to change work content and function content at a civil engineering and construction site, and includes a determination device 34 that is communicable with a first terminal 47 and a second terminal 33. When receiving information on an application for change of the work content and function content from the first terminal 47, the determination device 34 transmits, to the second terminal 33 of the authorized person having authority to approve the application for change, information on the application content for change and authority information on the authorized person identified.

Abstract: A work machine control system includes: a monitoring apparatus that detects a position and an action of a person in a monitored area set around a hydraulic excavator; and a controller that generates a control signal for limiting an action of the hydraulic excavator on the basis of a positional relation between the hydraulic excavator and a detected person detected by the monitoring apparatus, and controls the hydraulic excavator on the basis of the control signal. The controller determines which of a cooperating worker and a non-cooperating worker the detected person is, on the basis of an action of the detected person; and changes an allowable velocity of the work machine at a time of limiting an action of the work machine on the basis of a result of the determination or on the basis of the result of the determination and the action of the work machine.

Abstract: The object of the present invention is to provide a constriction assistance system that can optimize the safety and the productivity in a work at a construction site. Accordingly, the construction assistance system that has a safety construction assistance function that contributes to risk reduction in regard to a worker and a work machine at a construction site includes a server that collects operation information on the work machine deployed at the construction site, and a communication network that connects the work machine with the server. The server measures an actuation count of the safety construction assistance function, calculates a safety awareness level of the worker who works at the construction site on the basis of the actuation count, and delivers the safety awareness level to a receiving device.

Abstract: Provided is a work machine which can increase the operation speed of an actuator by a regeneration function while securing the position control accuracy of the actuator. A controller is configured to calculate a regeneration flow rate on the basis of an input amount of an operation lever and a target actuator flow rate, subtract the regeneration flow rate from the target actuator flow rate to calculate a target actuator supply flow rate, calculate a target flow rate control valve opening amount on the basis of the target actuator supply flow rate, calculate a target pump flow rate that is equal to or higher than a total target actuator supply flow rate, control a selector valve on the basis of the input amount of the operation lever, control a flow rate control valve according to the target flow rate control valve opening amount, and control a hydraulic pump according to the target pump flow rate.

Abstract: Provided is an unmanned work machine capable of reliably coordinating with a manned work machine and smoothly executing work. An excavating machine 100 is an unmanned work machine capable of working in coordination with a hauling machine 200 that is a manned work machine. The excavating machine 100 includes sound collectors 31a and 31b that are a receiver receiving a notification regarding the operating status of the hauling machine 200 or an operating instruction to the excavating machine 100, which are transmitted from the hauling machine 200 in response to the operation by an operator aboard the hauling machine 200, and a controller 10 that controls the operation of the excavating machine 100 in accordance with the received notification.

Abstract: Provided is a work machine which can achieve both of excellent operability when an operator manually operates a machine body or a work device and an accuracy of control of the machine body or the work device when a controller performs automatic control. The controller is configured to, in a case where the automatic control function selector switch gives an instruction to disable the automatic control function, adjust an opening amount of a bleed-off valve to a maximum opening amount or an opening amount corresponding to input amounts of control levers, and in a case where the automatic control function selector switch gives the instruction to enable the automatic control function, adjust the opening amount of the bleed-off valve, in at least part of an operation region of the control levers, so as to be smaller than the opening amount with the instruction to disable the automatic control function being given.

Abstract: Provided is a control system for a work machine that allows a worker in the operation around the work machine to safely approach the work machine. The control system for a work machine includes: a work machine 1 including a work implement 7, a lock mechanism 14 for the work implement 7, a lock controller 13 that controls the lock mechanism 14, and a communication device 20; and a communication terminal 30 that is able to communicate with the communication device 20 of the work machine 1. The lock controller 13 controls the lock mechanism 14 so as not to be released from a locked state in a case receiving a lock demand signal from the communication terminal 30, and controls the lock mechanism 14 so as to be released from the locked state in a case receiving a lock demand cancellation signal from the communication terminal 30.

Abstract: An overhead-view image of a work site is presented to an operator of a work machine even when the number of imaging devices at a construction site is lacking. The present disclosure provides an information presentation device for generating and outputting a terrain image relating to a construction site. The information presentation device includes a storage device that stores a program for performing a predetermined imaging process on the terrain image, and a processor for reading the program from the storage device and generating the terrain image.