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1. 发明授权

US11440733B2 Picking assistance system and assistance method 有权
公开(公告)号：US11440733B2
公开(公告)日：2022-09-13
申请号：US16650293
申请日：2019-02-19
申请人： Hitachi Industrial Products, Ltd.
发明人： Masaharu Kondou , Ryota Kamoshida , Hiroshi Yoshitake
IPC分类号： G06F7/00 , B65G1/137 , B65G1/10
摘要： Provided is a picking assistance system that can improve work efficiency. A picking assistance system includes: a plurality of movable shelves configured to be able to accommodate at least one article; and a control device configured to control the movement of each of the shelves. The control device causes a series of processes of moving a sorting shelf selected from the shelves to a work station selected from a plurality of work station and moving articles from a deposit shelf disposed at the selected work station to the sorting shelf by a picking operation to be executed repeatedly while changing the work station until the sorting shelf accommodates prescribed articles.

2. 发明申请

US20220074814A1 Abnormality Diagnosis System for Rotary Electric Machine 有权
公开(公告)号：US20220074814A1
公开(公告)日：2022-03-10
申请号：US17419964
申请日：2020-01-15
申请人： Hitachi Industrial Products, Ltd.
发明人： Shuhei AYUKAWA , Yasushi HAYASAKA , Motonobu IIZUKA , Takeki HARA , Masaaki ENDO , Atsushi FUKUNAGA
IPC分类号： G01M13/045 , H02K11/21 , H02P3/06
摘要： The present invention provides an abnormality diagnosis system capable of identifying an abnormality occurrence site in a rotary electric machine by use of output of sensors mounted to a bearing of the rotary electric machine. The abnormality diagnosis system includes: a rotary electric machine that has a main shaft secured to a center of a rotor and supported by a bearing; a vibration sensor that measures a vibration value of the bearing; a speed sensor that measures a rotational speed value of the main shaft; and an abnormality diagnosis apparatus that diagnoses abnormality in the rotary electric machine based on the vibration value and the rotational speed value. The abnormality diagnosis apparatus includes: a database that records the vibration value, the rotational speed value, and measurement times of the vibration value and the rotational speed value, as a data group of one unit, the vibration value and the rotational speed value measured within a predetermined time period; and an abnormality determination section that makes determination of abnormality, if a first threshold is exceeded by a difference in maximum vibration value in one speed range of interest between a past data group and a newer data group of a plurality of data groups recorded in the database, and makes no determination of abnormality, even if the first threshold is exceeded by a difference in maximum vibration value outside the speed range of interest.

3. 发明申请

US20210164485A1 Centrifugal Multistage Compressor 有权
公开(公告)号：US20210164485A1
公开(公告)日：2021-06-03
申请号：US17263479
申请日：2019-06-04
申请人： Hitachi Industrial Products, Ltd.
发明人： Kohei NISHIDA , Tomohiro NARUSE , Kiyotaka HIRADATE
IPC分类号： F04D29/16 , F04D17/12 , F04D29/043 , F04D29/28
摘要： The present invention provides a centrifugal multistage compressor adapted to inhibit corrosion of an intermediate stage labyrinth. More particularly, the present invention provides a centrifugal multistage compressor adapted to inhibit carbon dioxide corrosion of the intermediate stage labyrinth. The centrifugal multistage compressor of the present invention includes: a rotary shaft equipped with a plurality of impellers; an ejection flow path extended between a first stage of the impellers and a last stage of the impellers and serving to discharge a fluid once from the compressor; a suction flow path extended between the first stage of the impellers and the last stage of the impellers and serving to inject the discharged fluid once again into the compressor; an intermediate diaphragm disposed between the ejection flow path and the suction flow path; and an intermediate stage labyrinth for sealing between the ejection flow path and the suction flow path, and has a configuration where the intermediate diaphragm includes a bypass flow path for supplying the intermediate stage labyrinth with some of the fluid flowing to the ejection flow path.

4. 发明授权

US10965184B2 Rotary electric machine 有权
公开(公告)号：US10965184B2
公开(公告)日：2021-03-30
申请号：US16180615
申请日：2018-11-05
申请人： Hitachi Industrial Products, Ltd.
发明人： Misato Sato , Takeshi Mori , Kenichi Sugimoto , Takayuki Koyama
IPC分类号： H02K5/20 , H02K5/24 , H02K9/18 , H02K9/06 , H02K9/12
摘要： A rotary electric machine of the present invention includes: a stator; a rotor placed on an inner diameter side of the stator through an air gap and fixed to a rotating shaft; a stator frame supporting the stator; a casing storing the stator and the rotor; an outer fan fixed to the rotating shaft; a heat exchanger installed above the casing for heat exchange between outside air taken through the outer fan and internal air to remove heat; and an outer fan duct installed on an end portion of the casing in an axial direction, provided with the outer fan in an inside of the outer fan duct, and formed with a ventilation path through which the outside air is delivered to the heat exchanger. A plate-shaped member has at least a curved surface portion. The plate-shaped member forms the ventilation path of the outer fan duct.

5. 发明申请

US20210044212A1 Power Conversion Device 有权
公开(公告)号：US20210044212A1
公开(公告)日：2021-02-11
申请号：US16964105
申请日：2018-10-04
申请人： Hitachi Industrial Products, Ltd.
发明人： Kimihisa FURUKAWA , Akihiko KANOUDA , Yuuichi MABUCHI , Hiroyuki SHOJI , Takae SHIMADA , Mitsuhiro KADOTA , Mizuki NAKAHARA
IPC分类号： H02M5/458 , H02M5/45
摘要： A power conversion device that suppresses voltage pulsation of a capacitor of a power converter with respect to a control target whose effective power is to be controlled is provided. The power conversion device includes a plurality of power conversion cells that are connected to each other, and convert a primary-side system voltage into a secondary-side system voltage, a capacitor that is connected to each of the plurality of power conversion cells, and a power conversion cell driver that drives the power conversion cells to add a 3N order higher-harmonic-wave voltage of each of alternating voltages of the plurality of power conversion cells to the each of alternating voltages, and output a voltage made by adding the each of alternating voltages and the 3N order higher-harmonic-wave voltage, when N is a natural number.

6. 发明授权

US10793353B2 Article transportation system, transportation device, and article transportation method 有权
公开(公告)号：US10793353B2
公开(公告)日：2020-10-06
申请号：US15762953
申请日：2017-01-27
申请人： Hitachi Industrial Products, Ltd.
发明人： Koichi Nakano , Yoriko Kazama , Junichi Kimura , Hiroshi Yoshitake
IPC分类号： B65G1/04 , B25J5/00 , G06Q10/08 , B66F9/06 , G05B19/418 , B65G1/137
摘要： An article conveyance system includes a controller and a conveyance device. The controller includes: a storage section storing information concerning a position of a housing section stored in a shelf; a housing-section retrieving section retrieving, based on the information concerning the position of the housing section, housing positions of a plurality of the housing sections, which are picking targets, in the shelf; a route generating section generating a route that makes rounds of positions of the housing sections retrieved by the housing-section retrieving section; and a transmitting section transmitting information concerning the generated route and the housing positions of the housing sections to the conveyance device. The conveyance device includes: an acquiring section acquiring the plurality of housing sections based on the housing positions of the housing sections while autonomously moving according to the information concerning the route; and a loading section loading the acquired plurality of housing sections.

7. 发明申请

US20200167727A1 Transport System, Transport Controller, and Layout of Physical Distribution 审中-公开
公开(公告)号：US20200167727A1
公开(公告)日：2020-05-28
申请号：US16653262
申请日：2019-10-15
申请人： Hitachi Industrial Products, Ltd.
发明人： Akiharu IKEDA
IPC分类号： G06Q10/08 , G06F17/16
摘要： A transport system includes: a storage container that stores therein an item before the item is subjected to an order picking operation; a sorting container that stores therein an item after the item is subjected to the order picking operation; a transport robot that holds the storage container or the sorting container and transports the storage container or the sorting container in the holding state; and a transport controller configured to transmit, to the transport robot, an instruction that the storage container or the sorting container be transported to a picking area in which an item for which an order is placed from a customer is picked from the storage container and is transferred to the sorting container, and, in determining which customer for an ordered item be allocated to which sorting container, allocate one customer to one sorting container.

8. 发明申请

US20220037952A1 DYNAMO-ELECTRIC MACHINE 有权
公开(公告)号：US20220037952A1
公开(公告)日：2022-02-03
申请号：US17299028
申请日：2020-01-15
申请人： Hitachi Industrial Products, Ltd.
发明人： Takayuki KOYAMA , Kenichi SUGIMOTO
IPC分类号： H02K5/16 , H02K5/24 , H02K5/22
摘要： A dynamo-electric machine which inhibits the vibration of a frame and a bearing and has excellent manufacturability. A dynamo-electric machine according to the present invention includes a stator, a rotor including a rotary shaft and being disposed on an inner side in a radial direction of the stator, a bearing for supporting the rotary shaft, an intermediate frame for supporting the stator, and a stator frame for supporting the bearing and the intermediate frame. The stator frame includes pedestals at two end portions in a width direction of a bottom portion of the stator frame. Each of the pedestals includes an upper surface positioned above a bottom surface of the stator frame. The intermediate frame is fixed to upper surfaces of the pedestals.

9. 发明授权

US11108334B2 Power conversion device 有权
公开(公告)号：US11108334B2
公开(公告)日：2021-08-31
申请号：US16770894
申请日：2018-10-18
申请人： Hitachi Industrial Products, Ltd.
发明人： Mizuki Nakahara , Takae Shimada , Kimihisa Furukawa , Mitsuhiro Kadota
IPC分类号： H02M5/458 , H02M7/217 , H02M3/335 , H02M1/08 , H02M3/07 , H02M7/12 , H02M7/48 , H02M1/00
摘要： Provided is a power conversion device which can be configured inexpensively and in which initial charging can be performed quickly. Accordingly, the power conversion device is provided with: a power conversion device cell having a first converter for converting a first AC voltage to a first DC voltage, a second converter for converting the first DC voltage to another voltage, and a first capacitor charged by the first DC voltage; and a control circuit for allowing charging of the first capacitor while changing the operational state of the first converter in accordance with the first DC voltage.

10. 发明申请

US20200231383A1 Picking Assistance System and Assistance Method 审中-公开
公开(公告)号：US20200231383A1
公开(公告)日：2020-07-23
申请号：US16650293
申请日：2019-02-19
申请人： Hitachi Industrial Products, Ltd.
发明人： Masaharu KONDOU , Ryota KAMOSHIDA , Hiroshi YOSHITAKE
IPC分类号： B65G1/137 , B65G1/10
摘要： Provided is a picking assistance system that can improve work efficiency. A picking assistance system includes: a plurality of movable shelves configured to be able to accommodate at least one article; and a control device configured to control the movement of each of the shelves. The control device causes a series of processes of moving a sorting shelf selected from the shelves to a work station selected from a plurality of work station and moving articles from a deposit shelf disposed at the selected work station to the sorting shelf by a picking operation to be executed repeatedly while changing the work station until the sorting shelf accommodates prescribed articles.

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