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公开(公告)号：EP4425787A1
公开(公告)日：2024-09-04
申请号：EP22886773.5
申请日：2022-10-17
发明人： KANEKO, Satoru , YOSHIMURA, Masatoshi , MATSUO, Kosuke , ISHIDA, Seiji , WATANABE, Toshihiko , IKEGAMI, Tokuma
IPC分类号： H02P9/10 , F02D29/06 , H02P9/00 , H02P9/04 , H02P101/45 , H02P103/20
摘要： It is an object of the present invention to provide a drive system for dump trucks that is capable of reducing the capacity of a converter that excites a two-winding induced generator and of performing output control according to the converter capacity. To achieve the object, the drive system includes an induced generator having a primary winding including a main winding and a sub-winding, a rectifier for converting an AC voltage generated across the main winding into a DC voltage, a propulsive machinery side load connected to the rectifier, a converter connected to the sub-winding for exciting a secondary winding of the induced generator and converting an AC voltage generated across the sub-winding into a DC voltage, an accessory side load connected to the converter, and a controller for controlling the converter, in which the controller controls a DC voltage of the accessory side load according to electric power required by the accessory side load and controls a DC voltage of the propulsive machinery side load according to electric power required by the propulsive machinery side load and a converter capacity that represents a current capacity of the converter.
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公开(公告)号：EP4407103A1
公开(公告)日：2024-07-31
申请号：EP22872641.0
申请日：2022-08-26
IPC分类号： E02F9/20
CPC分类号： E02F9/20
摘要： An action management section 211 acquires a work instruction 230, which includes a final target position, and a current position of a work machine 100 to set a target position, a route planning section 212 generates a target route 240 between the current position and the target position, an operation generation section 213 causes the work machine 100 to travel in accordance with the target route 240, and upon receiving an evacuation instruction 250 including evacuation possible positions based on a work range of another work machine different from the work machine 100, the action management section 211 decides an evacuation position from among the evacuation possible positions based on the work range of the other work machine and at least one of the current position and final target position of the work machine 100 to set it to the target position.
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公开(公告)号：EP4386699A3
公开(公告)日：2024-07-24
申请号：EP24172445.9
申请日：2016-03-08
CPC分类号： E02F9/267 , E02F9/2054 , G06Q10/0631 , G06Q10/20 , G07C5/008
摘要： Operating information (a pilot pressure, a pump pressure, a hydraulic oil temperature, an engine rotational speed, an hour meter and the like) of a hydraulic excavator 1 and use environment information (operator information) of the hydraulic excavator 1 are transmitted to a center server 32 together with body information (for example, a model, a type, a type number, an identification number and the like) from the hydraulic excavator 1. For example, when a hydraulic hose as a replaceable component of the hydraulic excavator 1 is replaced, the replaceable component information (a replaceable component name and a replacement date) is transmitted to the center server 32 from a computer 47 for maintenance. The center server 32 predicts a replacement time of the replaceable component (hydraulic hose) using the use environment information of the hydraulic excavator 1 in addition to the operating information and the replaceable component information of the hydraulic excavator 1.
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公开(公告)号：EP4379145A1
公开(公告)日：2024-06-05
申请号：EP22901362.8
申请日：2022-11-30
IPC分类号： E02F3/43
CPC分类号： E02F3/43
摘要： Provided is a wheel loader allowing a load to be sufficiently mounted into a bucket regardless of the size and properties of a work object and an operation performed before the start of excavation. In a wheel loader 1 with an excavation support controller 5 for autonomously controlling a working device 2, in a case where a bucket 23 is tilted forward more than that in a predetermined posture, the excavation support controller 5 keeps outputting a command signal relating to a lifting operation to a lift arm solenoid control valve 481 and also outputs a command signal relating to a tilt operation to a bucket solenoid control valve 482 until the bucket 23 is in the predetermined posture, and in a case where the bucket 23 reaches the predetermined posture, outputs a command signal relating to a full tilt operation to the bucket solenoid control valve 482.
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公开(公告)号：EP4372155A1
公开(公告)日：2024-05-22
申请号：EP22889934.0
申请日：2022-10-31
发明人： SAITOH, Teppei , NARIKAWA, Ryu , NISHIZAWA, Tadashi , ITOU, Hideaki , ISHIMOTO, Hidefumi , SATOU, Kei
摘要： In a work machine 1, when on a travel plane S of crawler belts 21, a straight line passing a predicted travel point P1 distanced by a given distance from the crawler belts 21 and having the same angle as a maximum climbing angle θ relative to the travel plane S is assumed to be a first straight line L1, and a straight line connecting an installation position of the distance measurement sensor 6 and the predicted travel point P1 is assumed to be a second straight line L2, the distance measurement sensor 6 is positioned above the first straight line L1 and measures a distance from the installation position to a ground surface on the second straight line L2. The control device 5 calculates a height H1 of a predicted travel region T based on a measurement result of the distance measurement sensor 6 and a detection result of a turning angle sensor 8, and determines whether a height difference H3 between a height H1 of the predicted travel region T calculated and a height H2 of the travel plane S is equal to or greater than a threshold, and actuates a notification device when it is determined that the height difference is equal to or greater than the threshold.
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公开(公告)号：EP4354964A1
公开(公告)日：2024-04-17
申请号：EP22820212.3
申请日：2022-06-07
摘要： Provided is a vehicle control system that can prevent delays and losses in packet communication, prevent handover failures, and improve productivity while ensuring safety for various types of vehicles. The vehicle control system includes an on-board terminal mounted on a vehicle and including a plurality of wireless modems; a plurality of wireless base stations that wirelessly communicate with the on-board terminal, and form a plurality of cells; and a vehicle central control device that communicates with the on-board terminal via one of the wireless base stations. Each of the plurality of wireless modems is configured to be able to, when the vehicle moves across the plurality of cells, execute a handover to switch a connection to one of the plurality of wireless base stations to another. Each of the plurality of wireless modems is configured to be able to set threshold for executing the handover different from the others.
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公开(公告)号：EP4325321A1
公开(公告)日：2024-02-21
申请号：EP22787954.1
申请日：2022-03-23
发明人： KANAI, Masaki , TANAKA, Katsuaki
摘要： A hauling vehicle including a vehicle body, a distance meter that measures the distance to an obstacle, an in-vehicle controller that controls the vehicle body, and a communication device that communicates with a management controller that manages the vehicle body is provided. In the hauling vehicle, the in-vehicle controller executes primary determination of whether or not the distance meter is in a dirt-presumed state in which dirt of an objective surface of the distance meter is presumed, commands the vehicle body to stop at a current position when determining that the distance meter is in the dirt-presumed state in the primary determination, executes secondary determination of whether or not the distance meter is in the dirt-presumed state after the elapse of a set time from the execution of the primary determination, transmits an alarm to the management controller through the communication device when determining that the distance meter is in the dirt-presumed state in the secondary determination, and commands the vehicle body to resume travelling of the vehicle body when determining that the dirt-presumed state has been eliminated in the secondary determination.
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公开(公告)号：EP4318339A1
公开(公告)日：2024-02-07
申请号：EP22779399.9
申请日：2022-01-18
发明人： OKUMURA Takashi , KONNO Hiroyuki , INOSE Satoshi , SAKURAI Shigeyuki , OKU Shinichi , YONEDA Tomohiro
IPC分类号： G06Q10/00
摘要： A component life prediction system 1 includes a server device 10 configured to be able to communicate with a work machine 2, and capable of predicting the life of a component of the work machine 2. The server device 10 acquires operation information of the work machine 2 including information about the operation location of the work machine 2, and a pre-stored aerial photo of the operation location of the work machine 2; estimates the industry in which the work machine 2 is used based on the acquired operation information of the work machine 2 and aerial photo of the operation location; and predicts the life of the component of the work machine 2, based on the estimated industry.
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公开(公告)号：EP4317617A1
公开(公告)日：2024-02-07
申请号：EP22779532.5
申请日：2022-02-07
发明人： LEE Hyejeoung , KOTAKE Shinichi , IZUMI Shiho , ISHIHARA Shinji
摘要： A controller provided to a work machine stores a plurality of mask ranges which are used to select positioning satellites to be used by a receiver to compute a position of an antenna and are set with reference to an antenna on the basis of the postures of a work device and an swing structure. The controller computes each of a plurality of positioning precisions on the basis of satellite related data on the positioning satellites each of which is selected through use of each of the plurality of mask ranges and satellite related data on the positioning satellites which are selected through use of none of the plurality of mask ranges. The receiver computes the position of the antenna on the basis of satellite signals of the positioning satellites selected in a case of having the highest positioning precision out of the plurality of computed positioning precisions.
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公开(公告)号：EP4293236A1
公开(公告)日：2023-12-20
申请号：EP21931579.3
申请日：2021-03-18
发明人： AMANO, Hiroaki , KUMAGAI, Kento , OOHIRA, Hiroto , NISHIKAWA, Shinji , NARAZAKI, Akihiro , KODAKA, Katsuaki
IPC分类号： F15B11/042
摘要： A work machine includes: a main circuit that supplies a working fluid from a pump to an actuator; a pilot circuit that introduces part of the working fluid from the pump, to a pilot pressure receiving section of a control valve; a bleed-off passage that connects the pump and a tank. The pilot circuit is provided with: a first pressure reducing valve that generates a pilot primary pressure; and second and third pressure reducing valves that generate a pilot secondary pressure to be applied to the control valve and a bleed-off valve. A moving area of a spool of the bleed-off valve has a first moving area where an opening area of a restrictor changes stepwise, and a second moving area where the opening area of the restrictor changes continuously. A controller controls the third pressure reducing valve such that the spool is positioned in the first moving area at the time of non-operation of the actuator, and the spool is positioned in the second moving area at the time of operation of the actuator. The restrictor of the bleed-off valve has a restricting hole that gives a resistance to the working fluid passing therethrough in a case the spool is positioned in the first moving area.
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