公开(公告)号：US20230409176A1

公开(公告)日：2023-12-21

申请号：US18194066

申请日：2023-03-31

Applicant: HITACHI, LTD.

Inventor： Natsumi WATANABE ,  Masaya ITOH ,  Hiroyuki YAMADA ,  Satoshi OTSUKA

IPC: G06F3/0484 ,  B60W50/14 ,  G06F3/0482

CPC classification number: G06F3/0484 ,  B60W50/14 ,  B60W60/0015 ,  B60W2050/146 ,  G06F3/0482

Abstract: A safety design support system includes a display control unit that causes a display means to display main function design information in which items related to a main function of a product to be designed are hierarchically ordered, and safety design information in which items related to safety design of the product are hierarchically ordered. In accordance with change or addition of an item of the main function design information, the change or addition being made by a user's input operation, the display control unit causes the display means to display instruction information that prompts the user to carry out a next input operation.

公开(公告)号：US20230386336A1

公开(公告)日：2023-11-30

申请号：US18191007

申请日：2023-03-28

Applicant: HITACHI, LTD.

Inventor： Hiroyuki YAMADA ,  Kazuya SUGIMOTO ,  Masaya ITOH

IPC: G08G1/16

CPC classification number: G08G1/16

Abstract: An operation management apparatus includes: a map converter that performs interconversion between a first individual section state corresponding to a first mobile object and a reference section state and interconversion between a second individual section state corresponding to a second mobile object and the reference section state; and a block control controller that determines the first individual section state and the second individual section state to prevent a collision between the first mobile object and the second mobile object based on conversion results of the map converter.

公开(公告)号：US20170328030A1

公开(公告)日：2017-11-16

申请号：US15525155

申请日：2015-01-28

Applicant: HITACHI, LTD.

Inventor： Hiroyuki YAMADA ,  Saku EGAWA

IPC: E02F9/20 ,  E02F9/26 ,  G05D1/00 ,  G05D1/02 ,  E02F3/32

CPC classification number: E02F9/205 ,  E02F3/32 ,  E02F9/2041 ,  E02F9/2054 ,  E02F9/262 ,  G05D1/0027 ,  G05D1/0038 ,  G05D1/0246 ,  G05D2201/0202

Abstract: The present invention improves a work efficiency of an entire system for operating a plurality of working machines. An operation system of the working machine includes a work progress calculating unit 80 which calculates a work progress of a plurality of working machines or a scheduled ending time calculating unit 81 which calculates a scheduled ending time of a work by using the work progress calculated by the work progress calculating unit 80. A working machine of which an operation is switched from automatic control to remote control is determined from among the plurality of working machines by using the work progress or the scheduled ending time, and the operation system includes a centralized operation controller 43 which transmits an operation instruction to the determined working machine.

公开(公告)号：US20240019872A1

公开(公告)日：2024-01-18

申请号：US18030783

申请日：2021-10-12

Applicant: Hitachi, Ltd.

Inventor： Hiroyuki YAMADA ,  Noriyasu HASEJIMA ,  Go SAKAYORI ,  Takehito OGATA ,  Keiichi KATSUTA

IPC: G05D1/02

CPC classification number: G05D1/0297 ,  G05D2201/0216

Abstract: The present invention addresses the problem of efficiently moving a plurality of moving objects under different rule-based control systems without impairing safety. In order to solve this problem, a moving body task estimation unit 501 estimates moving body tasks 541 of a plurality of moving bodies 1 under different rule-based control systems, an optimum route generation unit 503 searches for optimum routes 542 using various combinations of a plurality of pieces of task information, and a common movement route creation unit 504 creates a common movement route 543 for the plurality of moving bodies by overlapping the obtained optimum routes 542.

公开(公告)号：US20180171582A1

公开(公告)日：2018-06-21

申请号：US15577202

申请日：2016-06-15

Applicant: Hitachi, Ltd.

Inventor： Hiroyuki YAMADA ,  Saku EGAWA

IPC: E02F3/43 ,  E02F9/26 ,  E02F9/22

CPC classification number: E02F3/437 ,  E02F9/2029 ,  E02F9/2045 ,  E02F9/2203 ,  E02F9/2246 ,  E02F9/2253 ,  E02F9/261 ,  E02F9/265

Abstract: To highly accurately plan a load loading operation by a working machine so that a load after the load loading operation has a target shape. A working machine operation system is a working machine operation system with a bucket, including: an operation recording unit which records a loading operation of a hydraulic excavator when a load is loaded from the bucket onto a carrier; a shape acquiring unit which acquires a shape of the load loaded on the carrier after the loading operation; a correlation calculation unit which calculates a correlation of the loading operation and the shape of the load; and a loading operation calculation unit which calculates the loading operation based on the correlation and the target shape of the load.

公开(公告)号：US20130302192A1

公开(公告)日：2013-11-14

申请号：US13944270

申请日：2013-07-17

Applicant: Hitachi, Ltd.

Inventor： Kenichiro TOKUO ,  Satoshi USUI ,  Hiroyuki YAMADA ,  Junichi SHIMADA ,  Masami ABE

IPC: F04B53/10

CPC classification number: F04B53/10 ,  F02M59/102 ,  F02M59/366 ,  F02M59/367 ,  F02M63/0015 ,  F02M63/004 ,  F02M63/0042 ,  F02M63/0043 ,  F02M63/0078 ,  F02M63/025 ,  F02M2200/28 ,  F02M2200/304

Abstract: A plunger type high-pressure fuel pump includes a plunger reciprocated in a cylinder. A fluid pressurizing chamber of the pump has a chamber with a capacity that changes with reciprocation of the plunger. An electromagnetic valve is provided between the pressurizing chamber and a fluid suction passage; as well as a discharge valve. The electromagnetic valve includes a valve member including a suction valve; a solenoid coil adapted to displace the valve member; an anchor made of a magnetic material provided integrally with the valve member; and a core forming a magnetic circuit to attract the anchor by the electromagnetic force and dividing the inside of the electromagnetic valve into an internal space and an external space communicating with the fluid suction passage. The anchor or the core is provided with a fluid passage through which fluid can flow between the internal space and the external space formed by the anchor and the core, respectively, when the suction valve is in an opened state.

Abstract translation: 柱塞型高压燃料泵包括在气缸中往复运动的柱塞。 泵的流体加压室具有容积随柱塞往复运动而变化的腔室。 在加压室和流体抽吸通道之间设有电磁阀; 以及排气阀。 电磁阀包括具有吸入阀的阀构件; 适于移动所述阀构件的电磁线圈; 由与阀构件一体设置的磁性材料构成的锚固件; 以及形成磁路的磁芯，其通过电磁力吸引锚固件，并将电磁阀的内部分成内部空间和与流体抽吸通道连通的外部空间。 锚固件或芯部设置有流体通道，当吸入阀处于打开状态时，流体可以分别通过该流体通道在内部空间和由锚固件和芯部形成的外部空间之间流动。