WO2019146667A1 - Machine de construction - Google Patents

Machine de construction Download PDF

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Publication number
WO2019146667A1
WO2019146667A1 PCT/JP2019/002172 JP2019002172W WO2019146667A1 WO 2019146667 A1 WO2019146667 A1 WO 2019146667A1 JP 2019002172 W JP2019002172 W JP 2019002172W WO 2019146667 A1 WO2019146667 A1 WO 2019146667A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery unit
frame
width direction
construction machine
extending
Prior art date
Application number
PCT/JP2019/002172
Other languages
English (en)
Japanese (ja)
Inventor
宏司 奈賀
善之 高野
美帆 富澤
Original Assignee
株式会社小松製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社小松製作所 filed Critical 株式会社小松製作所
Priority to CN201980000244.0A priority Critical patent/CN110312626B/zh
Priority to DE112019000004.7T priority patent/DE112019000004T5/de
Publication of WO2019146667A1 publication Critical patent/WO2019146667A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0833—Improving access, e.g. for maintenance, steps for improving driver's access, handrails
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
    • E02F9/2062—Control of propulsion units
    • E02F9/207—Control of propulsion units of the type electric propulsion units, e.g. electric motors or generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0422—Arrangement under the front seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/40—Special vehicles
    • B60Y2200/41—Construction vehicles, e.g. graders, excavators
    • B60Y2200/412—Excavators

Definitions

  • the present invention relates to a construction machine.
  • Priority is claimed on Japanese Patent Application No. 2018-010020, filed on Jan. 24, 2018, the content of which is incorporated herein by reference.
  • Patent Document 1 discloses an electric shovel as an example of a construction machine.
  • the electric shovel has a motor driven by a battery instead of the engine of a conventional hydraulic shovel.
  • a large number of batteries for driving the motor are provided in the entire width direction on the swing frame of the upper structure of the electric shovel.
  • the present invention has been made in view of such problems, and it is an object of the present invention to provide a construction machine that can be provided with a large number of batteries and can ensure the operator's rear view.
  • a construction machine includes a lower traveling body, and an upper revolving body pivotably provided on the lower traveling body, the upper revolving body being a horizontally extending revolving frame.
  • An upper plate portion disposed above the swing frame and extending in the front-rear direction and having a seat on the upper surface, and a front plate portion extending downward from the front side of the upper plate portion and connected to the swing frame
  • a partition member for partitioning a driving space on the front side and a storage space on the rear side on the revolving frame, and a battery unit disposed in the storage space, and a part of the battery unit is It is characterized in that it is disposed at the lower position of the seat.
  • a large number of batteries can be provided, and the operator's rear view can be secured.
  • a motor-driven shovel 200 as a construction machine includes a lower traveling body 210 and an upper revolving body 220.
  • the direction in which the gravity acts in a state in which the motor-driven shovel 200 is installed on a horizontal surface will be referred to as “vertical direction”.
  • the lower traveling body 210 has a pair of left and right crawler belts 211.
  • the lower traveling body 210 travels by driving the crawler belts 211 by a traveling hydraulic motor (not shown).
  • a blade 212 as an earth removing plate extending in a vehicle width direction (hereinafter simply referred to as a width direction) of the lower traveling body 210 is provided.
  • the height position of the blade 212 is adjustable by being driven by a hydraulic cylinder (not shown).
  • the upper swing body 220 is provided on the lower traveling body 210. As shown in FIGS. 2 to 5, the upper swing body 220 is supported by the swing frame 1 extending in the horizontal direction, a pair of support portions 2 extending upward from the swing frame 1, and the cross beams 5 provided on the pair of support portions 2. And the battery unit 4 provided on the revolving frame 1. Furthermore, the upper swing body 220 includes a canopy 231 supported by the pair of support portions 2 and a vehicle body cover 226 supported by the pair of support portions 2.
  • the swing frame 1 is connected to the lower traveling body 210 via a swing circle 215.
  • the swing circle 215 has an annular shape around a pivot axis extending in the vertical direction.
  • the swing frame 1 can be pivoted about the pivot axis with respect to the lower traveling unit 210 by a swing circle 215.
  • a work implement 221 is provided at the front of the swing frame 1.
  • the work implement 221 has a boom 222, an arm 223 and a bucket 224.
  • the boom 222 is supported via a bracket 1 a provided at the front end of the swing frame 1, whereby the work machine 221 is attached to the swing frame 1.
  • the work implement 221 performs various work such as excavation by driving the boom 222, the arm 223 and the bucket 224 by the respective hydraulic cylinders 219.
  • the front-rear direction and the width direction of the lower traveling body 210 and the front-rear direction and the width direction of the upper swing body 220 are assumed to coincide with each other.
  • a pair of supporting portions 2 is provided at an approximate center position in the front-rear direction of the revolving frame 1 at an interval in the width direction.
  • Each support 2 is provided to extend upward from the pivot frame 1.
  • Each support 2 is in the form of a column.
  • the cross beam 5 is a columnar member that extends in the width direction between the pair of support portions 2 and connects the pair of support portions 2. Therefore, a gate-shaped member is formed by the cross beam 5 and the pair of support portions 2.
  • the cross beam 5 is provided with a recess 5a so as to be recessed rearward from the surface facing the front.
  • the recess 5 a is provided at a position closer to one side in the width direction (the left side in the width direction in the present embodiment).
  • the recess 5a is formed by a bottom surface 6a located on the rear side and extending in the width direction, and a pair of inner side surfaces 6b extending outward in the width direction toward the front from both end edges in the width direction of the bottom surface 6a.
  • the support portion 2 and the cross beam 5 are integrally formed of a ROPS material (Roll Over Protective Structures).
  • the canopy 231 forms a ceiling portion of the driving space S1 on the revolving frame 1 and divides the driving space S1.
  • the canopy 231 is supported from below by each support 2.
  • the canopy 231 includes a hood 232 forming a ceiling of the driving space S1, a rear support 233 provided at the rear of the hood 232 and extending downward from the hood 232, and provided at the front of the hood 232 downward from the hood 232 And an extending front support 234.
  • the rear struts 233 are provided in a pair at positions separated in the width direction.
  • the lower end of each rear support 233 is fixed to the corresponding support 2 by a bolt or the like.
  • the front struts 234 are provided in a pair at positions separated in the width direction, and are U-shaped by being connected to each other at the lower ends.
  • the lower end of the front support 234 is fixed to the front of the pivot frame 1 in front of the support 2.
  • a reinforcing bar 235 is provided between the pair of front struts 234.
  • a vehicle body cover 226 extends from the support portions 2 back and forth and is detachably attached to the pivot frame 1.
  • the partition member 3 is a member that divides the above-described operation space S1 and the accommodation space S2 on the swing frame 1. More specifically, the partition member 3 extends forward from the support portion 2 in the front-rear direction and has an upper plate 7 provided with a seat 237 on the upper surface, and extends downward from the front end of the upper plate 7 and is connected to the pivot frame 1 And the front plate portion 8 that is formed.
  • the partition member 3 does not have to be a flat member, and may be, for example, a member having a curved surface.
  • the upper plate portion 7 is disposed across the pair of support portions 2, extends forward from the pair of support portions 2, has a plate shape extending in the horizontal direction, and is fixed to the lower surface of the seat portion 238 of the seat 237 .
  • the front plate portion 8 is formed in a plate shape which is bent from the front end of the upper plate portion 7 and extends downward.
  • a partition plate 9 is provided behind the front plate portion 8 and below the upper plate portion 7, and an auxiliary storage space S3 is provided at a position adjacent to the front plate portion 8.
  • a tool box etc. can be accommodated in the auxiliary accommodation space S3.
  • the front plate portion 8 is provided with an open / close lid 8a shown in FIG. 4 so as to allow access from the front to the auxiliary accommodation space S3.
  • the space on the upper side of the upper plate 7 and on the front side of the front plate 8 is the operation space S1
  • the space on the lower side of the upper plate 7 and the rear of the front plate 8 is the accommodation space S2.
  • a monitor 237a, an operation lever 237b, a handrail 237c and the like are provided around the seat 237.
  • the battery unit 4 has a plurality of battery cases 12 and a plurality of batteries 11 accommodated in each of the battery cases 12.
  • the plurality of battery cases 12 are disposed on the swing frame 1 and in a storage space S2 at the rear of the swing frame 1.
  • a storage space S2 at the rear of the swing frame 1.
  • three stages of battery cases 12 are stacked in the vertical direction at the front, and four stages of battery cases 12 are stacked in the vertical direction at the rear.
  • the front portion of the battery case 12 is disposed between the front and back by being sandwiched from the width direction by the pair of support portions 2 and disposed below the seat portion 238 of the seat 237 and below the hood 232 of the canopy 231 . Therefore, the front portion of the battery case 12 is disposed at a position overlapping with the seat portion 238 in plan view.
  • the front of the battery case 12 is disposed below the hood 232, and the front of the battery case 12 is disposed at a position overlapping the hood 232 in a plan view.
  • the rear of the battery case 12 is disposed at the rear of the support 2. Therefore, the height dimension of the battery unit 4 sandwiching the support portion 2 is larger at the rear than at the front. And the rear part of the battery unit 4 plays the role of a counterweight.
  • the front portion of the battery case 12 is not fixed to the partition member 3.
  • the front portion of the battery case 12 is disposed apart from the auxiliary accommodation space S3.
  • the battery case 12 is provided slidably on the swing frame 1. By removing the rear body cover 226, the battery case 12 is pulled backward to take out the battery unit 4 from the accommodation space S2, or the battery case 12 is pushed forward to install the battery unit 4 in the accommodation space S2. It is possible.
  • devices such as an inverter 242 and a filter box 243 are provided in the upper portion at the rear of the battery case 12.
  • the inverter 242 and the filter box 243 may be disposed at a position not blocking the driver's rearward view.
  • the backrest 239 of the seat 237 extends above the upper ends of the inverter 242 and the filter box 243.
  • the inverter 242 converts the DC power supplied from the battery unit 4 into AC power of an arbitrary frequency and outputs it.
  • the filter box 243 includes a filter for removing dust, particles and the like from the hydraulic oil supplied to the hydraulic cylinder 219.
  • the battery 11 supplies DC power to the inverter 242 and the like.
  • a plurality of batteries 11 are provided in a storage space inside of each battery case 12.
  • the accommodation space S2 is a space at a substantially central position in the width direction on the swing frame 1 in which the battery case 12 is disposed.
  • a pair of side housing portions S2a are provided on the swing frame 1 adjacent to the housing space S2 on the outer side in the width direction at both sides of the battery case 12 on the outer side in the width direction.
  • the main motor 244 and the hydraulic pump 245 are provided in order from the front to the back in the one side housing portion S2a (in the present embodiment, the side housing portion S2a on the left side in the width direction).
  • a power delivery unit 246 is provided in the other side accommodation portion S2a (in the present embodiment, the side accommodation portion S2a on the right side in the width direction).
  • the above-described support portion 2 is disposed in the side accommodation portion S2a.
  • Main motor 244 is rotationally driven by AC power output from inverter 242.
  • the hydraulic pump 245 is driven by the main motor 244 to generate the hydraulic pressure for operating the work machine 221 by the hydraulic cylinder 219.
  • the power delivery unit 246 distributes the power from the battery 11 of the battery unit 4 to each device.
  • the swing frame 1 is provided with devices such as a turning motor 241, a hydraulic valve 248, a hydraulic oil tank 249, and a cooling unit 250. Power from the battery 11 of the battery unit 4 is also supplied to these devices through the power delivery unit 246.
  • the turning motor 241 is disposed in front of the support portion 2 at a substantially central position in the width direction. More specifically, as shown in FIG. 4 and FIG. 5, in the circular motor insertion hole 1 b in a plan view penetrating the swing frame 1 in the vertical direction at the approximate center position in the width direction in front of the support 2 The shaft portion of the motor 241 is inserted, and the turning motor 241 is provided on the turning frame 1.
  • the turning motor 241 is rotationally driven by AC power output from the inverter 242.
  • the driving force of the turning motor 241 is transmitted to the swing circle 215 via a swing pinion (not shown).
  • the upper swing body 220 swings and drives with respect to the lower traveling body 210.
  • the hydraulic valve 248 is disposed in front of the support 2 and in front of the hydraulic pump 245.
  • the hydraulic valve 248 distributes the hydraulic pressure generated by the hydraulic pump 245 to each hydraulic cylinder 219.
  • the hydraulic oil tank 249 stores hydraulic oil supplied to the hydraulic pump 245.
  • the cooling unit 250 cools the hydraulic oil by heat exchange between the hydraulic oil and the external air.
  • the accommodation space S2 of the battery unit 4 can be expanded in the front-rear direction. Therefore, the battery unit 4 can be accommodated only in the housing space S2 at the center position in the width direction of the turning frame 1 without arranging the battery unit 4 over the entire area in the width direction of the turning frame 1. Thus, the capacity of the battery unit 4 can be increased while only a predetermined service person is allowed to access the battery unit 4.
  • a side accommodation portion S2a is provided on the widthwise outer side which is the side of the battery unit 4.
  • a main motor 244, a hydraulic pump 245, and a power delivery unit 246, which are devices requiring maintenance, are disposed.
  • the side accommodation portions S2a can be opened to the outside of the upper swing body 220, and the devices in the side accommodation portions S2a can be easily accessed. .
  • the battery unit 4 is disposed in a housing space S2 provided at the center position in the width direction so as to be sandwiched by the side housing portions S2a in the width direction. Therefore, when the apparatus in the side housing portion S2a is accessed, it is possible to prevent the worker from touching the battery unit 4 carelessly.
  • the cross beam 5 between the support portions 2 is provided with a recess 5 a.
  • the recess 5a can increase the range of reclining movement of the backrest 239 of the seat 237.
  • weight reduction of the cross beam 5 is attained by the recessed part 5a.
  • the provision of the support portion 2 facilitates the installation of the vehicle body cover 226.
  • the side accommodation portions S2a need not be provided on both sides of the accommodation space S2 in the width direction outer side, and the side accommodation portions S2a may be provided at least on either side of the accommodation space S2 in the width direction. Further, the side accommodation portion S2a may not necessarily be provided.
  • the pair of support portions 2 may not necessarily be provided, and the cross beam 5 may not necessarily be provided between the pair of support portions 2.
  • a corresponding reinforcing member of the cross beam 5 may be provided between the pair of rear supports 233 of the canopy 231.
  • the shape of the canopy 231 is not limited to that described above.
  • the rear support 233 instead of the rear support 233, only one rear support may be provided at a central position in the width direction. In this case, it becomes easy to secure the rear view of the operator.
  • a cab structure may be adopted to provide the driving space S1.
  • a tool box or the like may be provided in the side housing portion S2a in place of the above-described device.
  • the electric shovel 200 which drives the hydraulic pump 245 by a motor without mounting an engine has been described, but the present invention is not limited thereto.
  • the present invention may be applied to a shovel that also drives all of the work implement 221 and the like by electric driving.
  • the present invention may be applied to other construction machines.
  • a large number of batteries can be provided, and the operator's rear view can be secured.
  • SYMBOLS 1 Swirl frame 1a ... Bracket 1b ... Motor penetration hole 2 ... Support part 3 ... Partition member 4 ... Battery unit 5 ... Transverse beam 5a ... Recess 6a ... Bottom 6b ... Inner side 7 ... Upper plate part 8 ... Front plate part 8a ... Opening and closing Lid 9 ... Partition plate 11 ... Battery 12 ... Battery case 200 ... Electric shovel (construction machine) 210 ... Lower traveling body 211 ... Footwear 212 ... Blade 215 ... Swing circle 219 ... Hydraulic cylinder 220 ... Upper revolving body 221 ... Work machine 222 ... Boom 223 ... Arm 224 ... Bucket 226 ...
  • Body cover 231 ... Hood 232 ... Rear post 234 ... Front post 235 ... Reinforcement bar 237 ... Seat 237a ... Monitor 237b ... Operation lever 237c ... Handrail 238 ... Seat portion 239 Backrest 241: Motor for turning 242: Inverter 243: Filter box 244: Main motor 245: Hydraulic pump 246: Power delivery unit 248: Hydraulic valve 249: Hydraulic oil tank 250: Cooling unit S1: Driving space S1: Accommodation space S2: Accommodation space S2a: Side Partial housing part S3 ... Auxiliary housing space

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Component Parts Of Construction Machinery (AREA)

Abstract

L'invention concerne un corps rotatif supérieur (220) sur un corps mobile inférieur d'une machine de construction, l'unité rotative supérieure (220) comprenant : un cadre rotatif (1) ; un élément de séparation (3) qui est disposé au-dessus du cadre rotatif (1), a une section de plaque supérieure (7) pourvue d'un siège (237) sur sa surface supérieure, a une section de plaque avant (8) relié au cadre rotatif (1), et sépare un espace de réception côté arrière (S2) et un espace de fonctionnement côté avant (S1) sur le cadre rotatif (1) ; et une unité de batterie (4) qui est disposée dans l'espace de réception (S2), une partie de l'unité de batterie (4) étant disposée au niveau d'une position sous le siège (237).
PCT/JP2019/002172 2018-01-24 2019-01-24 Machine de construction WO2019146667A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980000244.0A CN110312626B (zh) 2018-01-24 2019-01-24 建筑机械
DE112019000004.7T DE112019000004T5 (de) 2018-01-24 2019-01-24 Baumaschine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-010020 2018-01-24
JP2018010020A JP7030544B2 (ja) 2018-01-24 2018-01-24 建設機械

Publications (1)

Publication Number Publication Date
WO2019146667A1 true WO2019146667A1 (fr) 2019-08-01

Family

ID=67394894

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/002172 WO2019146667A1 (fr) 2018-01-24 2019-01-24 Machine de construction

Country Status (4)

Country Link
JP (1) JP7030544B2 (fr)
CN (1) CN110312626B (fr)
DE (1) DE112019000004T5 (fr)
WO (1) WO2019146667A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003064721A (ja) * 2001-08-27 2003-03-05 Kubota Corp 旋回作業機のボンネット装置
JP2013019181A (ja) * 2011-07-12 2013-01-31 Hitachi Constr Mach Co Ltd 電動式建設機械
JP2013023943A (ja) * 2011-07-22 2013-02-04 Hitachi Constr Mach Co Ltd 電動式建設機械
KR20150107190A (ko) * 2014-03-13 2015-09-23 현대중공업 주식회사 건설장비의 축전 장치 냉각 시스템
US20170043823A1 (en) * 2013-08-22 2017-02-16 OSC Manufacturing & Equipment Services, Inc. Rechargeable battery power system having a battery with multiple uses

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2584101B1 (fr) * 2010-06-15 2017-05-10 Hitachi Construction Machinery Tierra Co., Ltd. Machine de construction électrique
JP5814578B2 (ja) 2011-03-24 2015-11-17 株式会社小松製作所 電動式作業車両及びそのベースフレーム
CN205314144U (zh) * 2015-11-28 2016-06-15 重庆永重重工有限公司 一种用于建筑作业的新型纯电动单斗挖掘机
JP6557713B2 (ja) 2017-10-24 2019-08-07 日東電工株式会社 光学部材の検査方法、光学製品の製造方法、及び、光学部材の検査装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003064721A (ja) * 2001-08-27 2003-03-05 Kubota Corp 旋回作業機のボンネット装置
JP2013019181A (ja) * 2011-07-12 2013-01-31 Hitachi Constr Mach Co Ltd 電動式建設機械
JP2013023943A (ja) * 2011-07-22 2013-02-04 Hitachi Constr Mach Co Ltd 電動式建設機械
US20170043823A1 (en) * 2013-08-22 2017-02-16 OSC Manufacturing & Equipment Services, Inc. Rechargeable battery power system having a battery with multiple uses
KR20150107190A (ko) * 2014-03-13 2015-09-23 현대중공업 주식회사 건설장비의 축전 장치 냉각 시스템

Also Published As

Publication number Publication date
DE112019000004T5 (de) 2019-09-26
CN110312626A (zh) 2019-10-08
CN110312626B (zh) 2023-09-12
JP2019127156A (ja) 2019-08-01
JP7030544B2 (ja) 2022-03-07

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