Hitachi Construction Machinery Co., Ltd.

Hitachi, Ltd.

Kcm Corporation

Hidekazu Moriki

Shinya Imura

Hiroshi Sakamoto

Ryu Narikawa

Yasutaka Tsuruga

Satoru Kaneko

Takashi Ikimi

Takaaki Chiba

Kouji Ishikawa

Shiho Izumi

Manabu Edamura

Noritaka Ito

Hiroaki Amano

Ryohei Yamashita

Shinji Ishihara

Yoshiyuki Tsuchie

Akira Kanazawa

Hiroaki Tanaka

Hisami Nakano

Noritaka Itou

Hiroaki Yanagimoto

Yuho Saito

Hiroyuki Kobayashi

Masatoshi Hoshino

Masaru Ito

Tadashi Osaka

Masafumi Hita

Kazuo Ishida

Kouji Shiwaku

Toru Kikuchi

Toshio Kotaka

Hiroyuki Yamada

Atsushi Yokoyama

Shinji Nishikawa

Seiji Hijikata

Takuya Naka

Ken Takeuchi

Tsutomu Udagawa

Masaki Kanai

Masamichi Ito

Satoshi Sekino

Norikazu Matsuzaki

Kentarou Itoga

Toshihiko Ishida

Yoshiaki Tsutsumi

Shinjirou Yamamoto

Masaki Higurashi

Yoko Tsukada

Kazuya Sekine

Kohei Itoh

Yuuichirou Morita

Shota Kimura

Ikimi Takashi

Kikuchi Toru

Kotaka Toshio

Kaneko Satoru

Yanagimoto Hiroaki

Ito Noritaka

A control systemfor a work machine includes a communication interfacethat acquires a series of work instructions to a work machineand an action control sectionthat controls an action of the work machineso as to perform tasks included in the work instructions acquired by the communication interface. When the tasks included in the work instructions include an interrupting task to be preferentially performed and non-interrupting tasks other than the interrupting task, the action control sectionperforms the interrupting task after performing an action of the work machineinstructed by a task in execution.

Control system for work machine

Provided is a wheel loader capable of evenly loading a target object for loading onto a target area for loading with simple operation to thus mitigate a burden on an operator. The wheel loaderincludes a travel devicethat causes a vehicle body to travel, a drive devicethat actuates a lift arm and a bucket, an area detection devicethat detects a loading area, and a control device. The control devicerecognizes the loading area on the basis of a detection result of the area detection deviceand controls the travel deviceand the drive device, so that the target object for loading contained in the bucket is distributed to be loaded in a plurality of different positions of the loading area while changing the position of the vehicle body in the front-back direction.

Wheel loader

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.

Work machine control system

Provided is an on-site monitoring apparatus and an on-site monitoring system that can appropriately set an area to be subjected to on-site monitoring. The on-site monitoring apparatus includes warning devicesandthat output a warning, peripheral object detection devicesandthat detect a position of a partition object, work area input devicesandthat receive an input of information indicating boundaries AB and BC to be arranged with a partition object, and control devicesand. The control devicesandincludes operation environment determination sectionsandthat determine, for each boundary, whether the boundary is an arranged boundary where the partition objectis arranged at a position corresponding to the boundary or an unarranged boundary where the partition objectis not arranged at a position corresponding to the boundary, and warning content determination sectionsandthat output a warning by the warning devicesandwhen at least one unarranged boundary is present.

On-site monitoring apparatus and on-site monitoring system

To provide a work machine that enables enhancement of shaping accuracy near a boundary line between two adjacent target surfaces. A controllerextracts, from among a plurality of target surfaces, a second target surface Sthat is a target surface adjacent to a first target surface S, calculates a boundary line Lbetween the first target surface Sand the second target surface S, and, prior to a work toolpassing the first boundary line L, corrects a control signal for a posture control actuatorsuch that the angular difference Ebetween a reference line Lset on the work tooland the boundary line Lbecomes small.

Work machine

A type of an object is determined and the movement direction of the object is predicted on the basis of a sensing result of the object sensed by an on-machine obstacle sensor. Information relating to the object that is the object sensed by the on-machine obstacle sensor and has been determined to have moved to the outside of a sensing range of the on-machine obstacle sensor is immediately deleted from an environment map on the basis of the type and the movement direction of the object. This can properly process information on the object that has gotten out of the sensing range, according to the cause of the object getting out of the sensing range.

There are provided: a monitoring apparatus that detects an obstacle located around a hydraulic excavator, and outputs obstacle information; and a controller that calculates an operation limiting command for limiting operation of the hydraulic excavator in accordance with an intrusion prohibited area set on the basis of a result of comparison between a movable range of the hydraulic excavator and a monitoring range of the monitoring apparatus and in accordance with the obstacle information from the monitoring apparatus. Thereby, it is possible to appropriately set an intrusion prohibited area, and reduce detection failures and detection errors.

Intrusion monitoring control system and work machine

A construction machine includes a posture sensor provided on a front member of a front work implement. An external environment recognition device detects an object around a main body, and a controller calculates a dead angle range from a recognition range of the external environment recognition device. An assumed movement range in which a moving body is assumed to exist in the dead angle range in a period of time determined in advance is calculated; and a movable range within which the front work implement is movable in a period of time determined in advance is calculated on the basis of the posture information detected by the posture sensor. Preventative control is then performed for preventing contact between the moving body and the front work implement on the basis of the assumed movement range of the moving body and the movable range of the front work implement.

Construction machine

In a case that a change instruction to instruct to change a work area Ato a requested work area Ais input, whether or not change of the work area Ato the requested work area Ais possible is judged on the basis of the work area A, location information of a machine main body configured by an upper swing structureand a lower track structure, and posture information of a work device, and the work area Ais overwritten with the requested work area Ato change the work area in an only case that it is judged that change is possible. This can suppress interference between plural work machines.

Provided is a work machine that can suppress decrease in work efficiency while reducing the possibility of contacting a worker or a dump truck, etc. A movement range is set in advance so as to avoid entry of a worker or a dump truck, etc. into the set movement range. The work machine performs stop control with clearance for an obstacle having entered the movement range, but performs stop control with relatively small clearance (minimum clearance) for a movement range. Thus, the work machine can reduce the frequency of stopping a body or a work implement and suppress decrease in work efficiency. Since the work machine controls the body or the work implement to stop with clearance when the worker or the dump truck, etc. enters the movement range of the work machine, the work machine can reduce the possibility of contacting the worker or the dump truck, etc.

Work machine having a movable body or a movably mounted work implement and a control unit configured to calculate clearance amounts and comparing them to thresholds

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, in a case of determining that combined operation is being carried out, controls a regulatorin such a manner that the delivery flow rate of a hydraulic pumpbecomes larger than the total target flow rate of plural hydraulic actuators, and, and controls the respective opening amounts of plural directional control valves, andin 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 sensorstobecomes small.

A work machine includes a plurality of actuators that drive a work device; a posture sensor that senses postural data about the work device; and a controller having a degree-of-proximity calculating section that computes a degree of proximity that is an index value indicating proximity between an intrusion prohibition region and the work device on the basis of positional data about the intrusion prohibition region and the postural data. A command section executes, when the proximity specified by the degree of proximity is closer than proximity specified by a degree-of-proximity threshold, operating area limiting control to decelerate at least one of the plurality of actuators such that an intrusion of the work device into the intrusion prohibition region is prevented. History of the data about the degree of proximity calculated at the degree-of-proximity calculating section is stored and the degree-of-proximity threshold is altered on the basis of the history data.

A construction machine that can make a depressing force of a bucket during compaction work to be uniform without requiring an operator to perform a complicated operation is provided. A controllerdetermines whether or not compaction work is in progress, calculates a front distance R that represents a distance between a rotational pivot of a boomand a predetermined position B in a back surface of a bucket, determines a target velocity of the bucket such that a velocity with which the bucket approaches a leveling target surface decreases with increasing values of the front distance, and, during the compaction work, notifies the operator of details of an operation of operation devicesandfor achieving the target velocity of the bucket or controls hydraulic actuatorstoso as to achieve the target velocity of the bucket.

A hydraulic excavator including a controller that calculates the positional relationship between a bucket and a target surface and a display device that displays the positional relationship between the bucket and the target surface includes an actuator state sensor that detects the pressure of a hydraulic cylinder. The controller calculates the velocity of the bucket based on the position of a work implement and the operation amount of an operation device and changes the contents of informing by the display device according to the velocity of the bucket, the distance between the bucket and the target surface, and the pressure of the hydraulic cylinder. The display device displays the contents of informing changed by the controller.

Provided are a work point position computing section configured to compute the relative position of a work point set on a bucket with respect to an upper swing structure on the basis of posture information, a target surface setting section configured to set a target surface as a target of excavation work on the basis of design surface information, a primary operation determining section configured to determine which of operations of a boom and an arm is a primary operation as a main operation when the work point is moved along the target surface, and a recommended operation computing section configured to compute a recommended operation amount and a recommended operation direction of a secondary operation as another operation different from the primary operation in the operations of the boom and the arm according to an operation amount and an operation direction of the primary operation.

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Tokyo, Japan

Hidekazu Moriki