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1. 发明公开

EP4047138A1 CONSTRUCTION ASSISTANCE SYSTEM AND WORK MACHINE 审中-实审
公开(公告)号：EP4047138A1
公开(公告)日：2022-08-24
申请号：EP20877404.2
申请日：2020-10-13
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： YAMADA, Hiroyuki , IMURA, Shinya , IZUMI, Shiho
IPC分类号： E02F3/43 , E02F9/24 , E02F9/26 , G08B21/24
摘要： 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. It is thereby possible to perform construction assistance according to the intention of the worker, and further improve safety of the worker while suppressing a decrease in work efficiency.

2. 发明公开

EP4006238A1 SITE MANAGEMENT SYSTEM AND WORK MACHINE 审中-实审
公开(公告)号：EP4006238A1
公开(公告)日：2022-06-01
申请号：EP20859949.8
申请日：2020-08-28
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： MIZUOCHI, Mariko , YAMADA, Hiroyuki , SAKAMOTO, Hiroshi
IPC分类号： E02F9/20 , E02F9/26 , H04W4/029 , G06Q50/08
摘要： A site management system is provided that can manage the positions of workers and the positions and the work areas of work machines and cause the workers to recognize the work areas of the work machines at a work site in which the work machines and the workers carry out work. For this purpose, a site management system 200 includes a site management device 30 connected to a worker terminal device 40 carried by a worker and a work machine information processing device 10 mounted on the worker. The site management device 30 generates worker information 360 on the basis of a signal 140 transmitted from the worker terminal device 40 and generates work machine information 350 based on a signal 110 transmitted from the work machine information processing device 10. The site management device 30 generates work area information 380 including the position and the work area of a work machine on the basis of the pieces of information 40 and 350 and transmits a work area notification signal 130 including the work area information to the worker terminal device 40.

3. 发明授权

EP3235961B1 CONSTRUCTION MACHINE 有权
公开(公告)号：EP3235961B1
公开(公告)日：2018-12-05
申请号：EP17160731.0
申请日：2017-03-14
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： MORIKI, Hidekazu , YAMADA, Hiroyuki , EDAMURA, Manabu , SAKAMOTO, Hiroshi
IPC分类号： E02F3/32 , E02F3/43 , E02F9/20 , E02F9/26
CPC分类号： E02F3/439 , E02F3/32 , E02F9/2004 , E02F9/2041 , E02F9/262 , E02F9/265
摘要： A construction machine acquires efficiently and accurately the target surface to be displayed or controlled. The construction machine includes: a design surface information storage unit 110 storing three-dimensional target shape as multiple design surfaces; a work equipment velocity vector acquisition unit 130 detecting or estimating the velocity of work equipment; a work equipment position acquisition unit 120 detecting or estimating the position of the work equipment; a target surface acquisition unit 140 acquiring a principal target surface to acquire an estimated target surface that is potentially the next principal target surface; an operation control unit 150 correcting the work equipment velocity; and a display unit 300 displaying the positional relations between the work equipment position and the principal target surface. The target surface acquisition unit 140 includes an estimated target surface calculation unit 141 determining as an estimated target surface the design surface located in the direction of the work equipment velocity vector.

4. 发明公开

EP3816350A1 WORK MACHINE 有权
公开(公告)号：EP3816350A1
公开(公告)日：2021-05-05
申请号：EP19826906.0
申请日：2019-06-10
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： YAMADA, Hiroyuki , UJI, Katsumasa
IPC分类号： E02F3/43 , E02F9/20
摘要： A controller mounted in a hydraulic excavator includes: a state transition section that performs switchover between two types of control that are manual control and semiautomatic control, on the basis of input of a state switching signal; and a velocity transition section that changes a rate of change with time in a velocity of a boom cylinder from a first rate of change I1 to a second rate of change I2 greater than the first rate of change I1 in a case in which input to an operation lever changes since the state transition section switches over between the two types of control until the velocity of the boom cylinder changes to a velocity Vo(t) specified by the control after the switchover between the two types of control.

5. 发明公开

EP3998386A1 CONSTRUCTION MANAGEMENT SYSTEM AND WORK MACHINE 审中-实审
公开(公告)号：EP3998386A1
公开(公告)日：2022-05-18
申请号：EP20869654.2
申请日：2020-08-20
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： KANAZAWA, Akira , YAMADA, Hiroyuki , IZUMI, Shiho , IMURA, Shinya
IPC分类号： E02F9/26 , G06Q50/08
摘要： A construction management device is provided which computes a risk indicative of a degree of danger with which an accident occurs on the basis of information relating at least to a position of a worker measured by a worker position measuring device and a worker biometrical information measuring device, information relating at least to a position of a hydraulic excavator measured by a machine body position measuring device, a machine body posture measuring device, a machine front implement posture measuring device, and a machine operator biometrical information measuring device, personal information on a worker and an operator registered in a worker information registration device, and information on a construction environment from an environment information registration device, and outputs the computed risk as a coordinate risk associated with coordinates of the construction environment to a risk display device such that the computed risk is displayed in a map format on the risk display device. By such configuration, a risk in a construction site can be evaluated with a higher degree of accuracy and an evaluation result can be presented in a more appropriate form.

6. 发明公开

EP3686354A1 WORK MACHINERY 有权
公开(公告)号：EP3686354A1
公开(公告)日：2020-07-29
申请号：EP17922067.8
申请日：2017-09-13
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： CHIBA, Takaaki , YAMADA, Hiroyuki
IPC分类号： E02F9/22 , E02F3/43 , E02F9/20
摘要： A work machine is provided. The work machine includes a changeover valve capable of disabling area limiting control by bypassing an area limiting control solenoid proportional valve disposed in a pilot line through which pilot pressure generated by a hydraulic pilot type operation device is guided to a directional control valve and the work machine can perform the area limiting control while ensuring response of a work implement.
When a first fluid temperature T1 is higher than a first predetermined temperature Ta and a control changeover switch 66 specifies disabling of the area limiting control, a controller 25 brings a plurality of changeover valves 51 to 55 into a bypass position. When the first fluid temperature T1 is equal to or lower than the first predetermined temperature Ta, the controller 25 brings the changeover valves into a communication position and places the solenoid proportional valves in a fully open position.

7. 发明公开

EP3235961A1 CONSTRUCTION MACHINE 有权
标题翻译：施工机械
公开(公告)号：EP3235961A1
公开(公告)日：2017-10-25
申请号：EP17160731.0
申请日：2017-03-14
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： MORIKI, Hidekazu , YAMADA, Hiroyuki , EDAMURA, Manabu , SAKAMOTO, Hiroshi
IPC分类号： E02F9/26
CPC分类号： E02F3/439 , E02F3/32 , E02F9/2004 , E02F9/2041 , E02F9/262 , E02F9/265
摘要： A construction machine acquires efficiently and accurately the target surface to be displayed or controlled. The construction machine includes: a design surface information storage unit 110 storing three-dimensional target shape as multiple design surfaces; a work equipment velocity vector acquisition unit 130 detecting or estimating the velocity of work equipment; a work equipment position acquisition unit 120 detecting or estimating the position of the work equipment; a target surface acquisition unit 140 acquiring a principal target surface to acquire an estimated target surface that is potentially the next principal target surface; an operation control unit 150 correcting the work equipment velocity; and a display unit 300 displaying the positional relations between the work equipment position and the principal target surface. The target surface acquisition unit 140 includes an estimated target surface calculation unit 141 determining as an estimated target surface the design surface located in the direction of the work equipment velocity vector.
摘要翻译：建筑机械有效且准确地获取要显示或控制的目标表面。该建筑机械具有：设计面信息存储部110，其将三维目标形状作为多个设计面存储; 检测或估计工作装置的速度的工作装置速度矢量获取单元130; 作业设备位置取得部120，其检测或推定作业设备的位置; 目标表面获取单元140获取主要目标表面以获取可能是下一个主要目标表面的估计目标表面; 操作控制单元150，其校正工作装置速度; 以及显示工作装置位置与主要目标表面之间的位置关系的显示单元300。目标面取得部140具有推定目标面计算部141，该推定目标面计算部141将位于工作装置速度矢量方向的设计面确定为推定对象面。

8. 发明公开

EP2390532A1 LINEAR ACTUATOR AND FORKLIFT 审中-公开
标题翻译： LINEARER STELLANTRIEB UND GABELSTAPLER
公开(公告)号：EP2390532A1
公开(公告)日：2011-11-30
申请号：EP09838883.8
申请日：2009-12-25
申请人： Hitachi Construction Machinery Co., Ltd
发明人： HAYASE, Isao , HIRAKU, Kenji , YAMADA, Hiroyuki , OCHIAI, Masami , YANAGI, Yuichi , SEKIYAMA, Nobuya
IPC分类号： F16H25/22 , B66F9/08
CPC分类号： B66F9/08 , B66F9/24 , F16H25/2261 , Y10T74/18576
摘要： This invention includes a screw shaft 1, a screw thread 10 formed spirally on an outer periphery of the screw shaft, a plurality of rollers 2 arranged along the thread so as to be spaced from one another in a circumferential direction of the screw shaft to roll along a flank surface 1a of the screw thread via a rolling surface 2c, and a roller cage 3 accommodating the plurality of rollers so as to rotate each of the rollers on respective axes and constructed so that when the rollers are made to roll, the cage moves about the screw shaft in relative form with respect thereto; wherein the rollers each have a central axis 26 fixedly positioned with respect to the roller cage so that the roller takes a posture making a line imaginarily extended from the central axis intersect the screw shaft, and so that the central axis is inclined towards the flank surface with which the rolling surface comes into contact. Thus, a linear actuator is provided that has high motive power transmission efficiency and excellent durability since significant slipping between the rollers and the screw shaft is suppressed.
摘要翻译：本发明包括螺杆轴1，在螺杆轴的外周螺旋地形成的螺纹10，沿着螺纹布置的多个辊2，以沿着螺杆轴的圆周方向彼此间隔地滚动沿着螺纹的经过滚动面2c的侧面1a，以及容纳多个辊的滚子保持架3，以使各滚子在各轴线上旋转，并且构造成使得当滚子滚动时，保持架相对于螺杆轴相对移动; 其中辊子各自具有相对于滚子保持架固定地定位的中心轴线26，使得辊子采取使从中心轴线观察地延伸的线与螺纹轴相交的姿态，并且使得中心轴线朝向侧面滚动面与其接触。因此，提供了具有高的动力传递效率和优异的耐久性的线性致动器，因为抑制了辊和螺杆轴之间的显着滑动。

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