WO2014069680A1 - 하이브리드형 건설기계 전동식 유압액츄에이터 장착구조 - Google Patents
하이브리드형 건설기계 전동식 유압액츄에이터 장착구조 Download PDFInfo
- Publication number
- WO2014069680A1 WO2014069680A1 PCT/KR2012/008941 KR2012008941W WO2014069680A1 WO 2014069680 A1 WO2014069680 A1 WO 2014069680A1 KR 2012008941 W KR2012008941 W KR 2012008941W WO 2014069680 A1 WO2014069680 A1 WO 2014069680A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frame
- boom
- bucket
- arm
- hydraulic actuator
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
-
- 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
-
- 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
- E02F9/2075—Control of propulsion units of the hybrid type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/18—Combined units comprising both motor and pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20561—Type of pump reversible
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/27—Directional control by means of the pressure source
Definitions
- the present invention relates to a hybrid construction machine electric hydraulic actuator mounting structure, in particular an electric hydraulic actuator that can be mounted vertically on the upper frame electric hydraulic actuators that can control the boom, arms and buckets using electrical energy. It relates to a mounting structure.
- an electric hydraulic actuator (EHA) is charged with electrical energy generated by a generator connected to an engine to a power storage device, and the electric motor for a boom, arm, and bucket driven by the electrical energy ( It means that it is configured as a plurality of hydraulic pump (drive), each driven by an electric motor and supplied to the boom cylinder and the like.
- the hydraulic excavator drives the hydraulic pump by the engine, and controls the spool of the MCV by the pilot signal pressure to control the flow rate supplied from the hydraulic pump to the hydraulic actuator, thereby driving a work device such as a boom.
- the hybrid excavator is used to drive a generator such as a boom by charging the battery with electric energy generated by driving the generator by the engine and driving the electric motor by the electric motor from the battery. It becomes possible.
- the hybrid excavator requires a separate mounting structure for mounting the electric hydraulic actuator configured as the electric motor and the hydraulic pump on the upper frame.
- the present invention is to solve the above problems, to minimize the space occupied by vertically mounting the electric hydraulic actuators on the upper frame, hybrid construction machine capable of stably mounting the electric hydraulic actuators on the upper frame
- An object of the present invention is to provide an electric hydraulic actuator mounting structure.
- an object of the present invention is to provide a hybrid construction machine electric hydraulic actuator mounting structure that can minimize the generation of electrical noise due to the high-voltage cable connecting the electric hydraulic actuator and the converter.
- Electric motors for booms, arms and buckets driven by electrical energy generated by a generator connected to the engine, and a plurality of hydraulic pumps connected to the electric motors for booms, arms and buckets, respectively.
- Configure hydraulic actuators
- the electric hydraulic actuators for the boom, the arm and the bucket provide a hybrid construction machine electric hydraulic actuator mounting structure, characterized in that arranged vertically fixed to the holding frame mounted on the upper frame.
- the holding frame is,
- a first frame having a lower end mounted on the upper frame and having a pair of first fixing pieces formed to face an inner side of the upper frame and fixed to an outer side of one end of the electric hydraulic actuator;
- a lower end is mounted on the upper frame so as to face the first frame, and second and third fixing pieces formed on the inner side are formed of second and third frames fixed to the outer side of the other end of the electric hydraulic actuator. do.
- the holding frame is,
- a first frame having a lower end mounted on the upper frame and having a pair of first fixing pieces formed to face an inner side of the upper frame and fixed to an outer side of one end of the electric hydraulic actuator;
- a lower end is mounted on the upper frame to face the first frame, and a pair of second fixing pieces formed to face the inner side is formed of a second frame fixed to the outer side of the other end of the electric hydraulic actuator. do.
- the holding frame is,
- first frame and the second and third frames respectively, characterized in that it comprises a mounting plate mounted to the upper frame by a bolt.
- a plurality of blocks connected to one side of the hydraulic pump for the boom, the arm and the bucket, and connected with a hydraulic hose for transferring the hydraulic oil discharged from the hydraulic pump for the boom, the arm and the bucket to the boom cylinder, the arm cylinder and the bucket cylinder. It is characterized by.
- a converter mounted to the upper frame adjacent to the electric hydraulic actuator for the boom, the arm, and the bucket, the converter controlling the electric motor for the boom, the arm, and the bucket, respectively.
- the converter is disposed up and down on a frame mounted on the upper frame so as to correspond to the up and down positions of the electric hydraulic actuators for the boom, the arm and the bucket mounted on the strut frame.
- the electric hydraulic actuators for the boom, the arm and the bucket are arranged between the cabin and the converter mounted to the upper frame.
- the electric hydraulic actuator is mounted in one place, the assembly and maintenance can be improved, and the occurrence of electrical noise due to the high voltage cable connecting the electric hydraulic actuator and the converter can be reduced.
- FIG. 1 is a view of a hybrid construction machine electric hydraulic actuator mounted on an upper frame according to a preferred embodiment of the present invention
- Figure 2 is a view of the combined state of the electric hydraulic actuator shown in Figure 1 and the holding frame for mounting it on the upper frame,
- FIG. 3 is a view for explaining the fixing of the electric hydraulic actuator and the holding frame shown in FIG.
- FIG. 1 is a view showing a state in which a hybrid construction machine electric hydraulic actuator mounted on an upper frame according to a preferred embodiment of the present invention
- Figure 2 is a holding frame for mounting the electric hydraulic actuator shown in Figure 1 and the upper frame
- Figure 3 is a view of the combined state
- Figure 3 is a view for explaining the fixing of the electric hydraulic actuator and the holding frame shown in FIG.
- Electric motors (1, 2, 3) for booms, arms and buckets generated by a generator (not shown) connected to an engine (not shown) and driven by electrical energy charged in a battery (not shown); , Electric hydraulic actuators for booms, arms and buckets as hydraulic pumps 4, 5 and 6 for booms, arms and buckets connected to the electric motors 1, 2 and 3 for booms, arms and buckets, respectively. 9)
- the electric hydraulic actuators 7, 8, 9 for the boom, arm and bucket are fixed in layers perpendicular to the strut frame A (preferably formed of steel) mounted on the upper frame 10. (Hydraulic actuators (7, 8, 9) are mounted in the longitudinal direction).
- a lower end is mounted on the upper frame 10, and a pair of first fixing pieces 11 and 12 formed to face the inner side of the upper frame 10 is disposed at an outer side of one end of the electric hydraulic actuators 7, 8, and 9.
- the first frame 13 is fixed,
- a lower end is mounted on the upper frame 10 so as to face the first frame 13, and second and third fixing pieces 14 and 15 formed on an inner side thereof are the electric hydraulic actuators 7, 8, and 9. It may be made of a second, third frame (16, 17) fixed to the other end outer surface of the).
- a first frame having a lower end mounted on the upper frame 10 and having a pair of first fixing pieces formed to face an inner side of the upper frame 10 and fixed to an outer side of one end of the electric hydraulic actuators 7, 8, and 9; ,
- a lower end is mounted on the upper frame 10 so as to face the first frame, and a pair of second fixing pieces which are formed to face the inner side of the other end of the electric hydraulic actuators 7, 8, and 9 are formed. It may be made of a second frame fixed to.
- the converter 30 is a frame mounted to the upper frame 10 so as to correspond to the up and down positions of the electric hydraulic actuators 7, 8, and 9 for the boom, the arm and the bucket mounted to the strut frame A. It can be arranged up and down at 31.
- the boom converter 30a for controlling the boom electric motor 1 may be mounted on the frame 31.
- the arm converter 30b for controlling the arm electric motor 2 may be mounted on the middle of the frame 31.
- a bucket converter 30c for controlling the bucket electric motor 3 may be mounted below the frame 31.
- the electric hydraulic actuators 7, 8, 9 for the boom, arm and bucket may be disposed between a cabin (not shown) mounted on the upper frame 10 and the converter 30.
- the first frame 13 is mounted on the upper frame 10 by bolting the mounting plate 13a welded to the lower end thereof, and the second and third frames 16 and 17 are mounted. Is mounted so as to face the first frame 13 on the upper frame 10 by fastening bolts of these mounting plates 16a and 17a.
- One end of the electric motors 1, 2, 3 of the electric hydraulic actuators 7, 8, 9 for the boom, the arm and the bucket is fitted between the first fixing pieces 11, 12 of the first frame 13.
- the other end of the electric motors 1, 2 and 3 is sandwiched between the second and third fixing pieces 14 and 15 of the second and third frames 16 and 17.
- the electric motors for the boom, the arm and the bucket (1, 2) by bolts (B) penetrating through the mounting holes of the pair of first fixing pieces (11, 12) formed on the inner surface of the first frame (13). Fix one end outer surface of (3), respectively.
- the bolt (B) is fitted to the mounting holes of the first fixing piece (11, 12) is fastened to the screw hole formed on the outer surface of the electric motors (1, 2, 3) for the boom, the arm and the bucket.
- the electric motor for the boom, the arm and the bucket by the bolt (B) passing through the mounting holes of the second and third fixing pieces 14 and 15 formed on the inner surfaces of the second and third frames 16 and 17 ( Fix the outer surface of the other end of 1,2,3), respectively.
- the bolt (B) is fitted into the mounting holes of the second and third fixing pieces (14, 15) is fastened to the screw hole formed on the outer surface of the electric motors (1, 2, 3) for the boom, the arm and the bucket.
- the electric hydraulic actuators 7, 8, 9 for the boom, the arm and the bucket fixed by the strut frames A; 13, 16, 17 mounted on the upper frame 10 are arranged vertically.
- the electric hydraulic actuators (7, 8, 9) for booms, arms and buckets in the vertical direction, it is possible to increase the utilization of the peripheral space, and these electric hydraulic actuators (7, 8, 9) It is possible to improve the assembly and maintainability of the.
- a converter 30 capable of controlling the electric motors 1, 2, 3 is mounted next to the electric hydraulic actuators 7, 8, 9 for the boom, the arm and the bucket.
- the electric energy generated by the generator connected to the engine is charged to the electrical storage device, and the electric motors (1, 2, 3) for the boom, the arm and the bucket are driven by the charged electric energy, and these electric motors (1) 2, 3) to control the flow rate supplied to the boom cylinder, arm cylinder, bucket cylinder from the boom, arm and bucket hydraulic pump (4, 5, 6), the related art Since the configuration used in the description thereof will be omitted.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Operation Control Of Excavators (AREA)
Abstract
Description
Claims (8)
- 엔진에 연결되는 발전기에 의해 생성되는 전기에너지에 의해 구동되는 붐, 아암 및 버킷용 전기모터와, 상기 붐, 아암 및 버킷용 전기모터에 각각 연결되는 복수의 유압펌프로서 붐, 아암 및 버킷용 전동식 유압액츄에이터들을 구성하되,상기 붐, 아암 및 버킷용 전동식 유압액츄에이터들은 상부 프레임에 장착되는 지주형 프레임에 수직으로 배열되어 고정되는 것을 특징으로 하는 하이브리드형 건설기계 전동식 유압액츄에이터 장착구조.
- 제1항에 있어서, 상기 지주형 프레임은,상기 상부 프레임에 하단이 장착되고, 내측면에 대향되게 형성되는 한 쌍의 제1고정편이 상기 전동식 유압액츄에이터의 일단부 외측면에 고정되는 제1프레임과,상기 제1프레임과 대향되게 상기 상부 프레임에 하단이 장착되고, 내측면에 형성되는 제2,3고정편이 상기 전동식 유압액츄에이터의 타단부 외측면에 각각 고정되는 제2,3프레임으로 이뤄지는 것을 특징으로 하는 하이브리드형 건설기계 전동식 유압액츄에이터 장착구조.
- 제1항에 있어서, 상기 지주형 프레임은,상기 상부 프레임에 하단이 장착되고, 내측면에 대향되게 형성되는 한 쌍의 제1고정편이 상기 전동식 유압액츄에이터의 일단부 외측면에 고정되는 제1프레임과,상기 제1프레임과 대향되게 상기 상부 프레임에 하단이 장착되고, 내측면에 대향되게 형성되는 한 쌍의 제2고정편이 상기 전동식 유압액츄에이터의 타단부 외측면에 고정되는 제2프레임으로 이뤄지는 것을 특징으로 하는 하이브리드형 건설기계 전동식 유압액츄에이터 장착구조.
- 제2항에 있어서, 상기 지주형 프레임은,상기 제1프레임 및 제2,3프레임 하단부에 각각 형성되며, 상기 상부 프레임에 볼트에 의해 장착되는 마운팅 플레이트를 구비하는 것을 특징으로 하는 하이브리드형 건설기계 전동식 유압액츄에이터 장착구조.
- 제1항에 있어서, 상기 붐, 아암 및 버킷용 유압펌프 일측에 연결되며, 상기 붐, 아암 및 버킷용 유압펌프로부터 토출되는 작동유를 붐실린더, 아암실린더 및 버킷실린더로 이송시키는 유압호스가 연결되는 복수의 블록을 구비하는 것을 특징으로 하는 하이브리드형 건설기계 전동식 유압액츄에이터 장착구조.
- 제1항에 있어서, 상기 붐, 아암 및 버킷용 전동식 유압액츄에이터에 인접하게 상기 상부 프레임에 장착되며, 상기 붐, 아암 및 버킷용 전기모터를 각각 제어하는 컨버터를 구비하는 것을 특징으로 하는 하이브리드형 건설기계 전동식 유압액츄에이터 장착구조.
- 제6항에 있어서, 상기 지주형 프레임에 장착되는 상기 붐, 아암 및 버킷용 전동식 유압액츄에이터들의 상하 위치에 대응되도록, 상기 컨버터는 상기 상부 프레임에 장착되는 프레임에 상하로 배치되는 것을 특징으로 하는 하이브리드형 건설기계 전동식 유압액츄에이터 장착구조.
- 제6항에 있어서, 상기 붐, 아암 및 버킷용 전동식 유압액츄에이터들은 상기 상부 프레임에 장착되는 캐빈과 컨버터사이에 배치되는 것을 특징으로 하는 하이브리드형 건설기계 전동식 유압액츄에이터 장착구조.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/437,468 US20150284933A1 (en) | 2012-10-29 | 2012-10-29 | Electro hydraulic actuator mounting structure for hybrid type construction machine |
| PCT/KR2012/008941 WO2014069680A1 (ko) | 2012-10-29 | 2012-10-29 | 하이브리드형 건설기계 전동식 유압액츄에이터 장착구조 |
| GB1506476.9A GB2520910A (en) | 2012-10-29 | 2012-10-29 | Electro hydraulic actuator mounting structure for hybrid type-construction machine |
| KR1020157010788A KR20150063479A (ko) | 2012-10-29 | 2012-10-29 | 하이브리드형 건설기계 전동식 유압액츄에이터 장착구조 |
| CA2888604A CA2888604A1 (en) | 2012-10-29 | 2012-10-29 | Electro hydraulic actuator mounting structure for hybrid type construction machine |
| DE112012007060.7T DE112012007060T8 (de) | 2012-10-29 | 2012-10-29 | Elektrohydraulische-Betätigungsvorrichtung-Anbringungsstruktur für eine Baumaschine vom Hybridtyp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/KR2012/008941 WO2014069680A1 (ko) | 2012-10-29 | 2012-10-29 | 하이브리드형 건설기계 전동식 유압액츄에이터 장착구조 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014069680A1 true WO2014069680A1 (ko) | 2014-05-08 |
Family
ID=50627571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2012/008941 Ceased WO2014069680A1 (ko) | 2012-10-29 | 2012-10-29 | 하이브리드형 건설기계 전동식 유압액츄에이터 장착구조 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20150284933A1 (ko) |
| KR (1) | KR20150063479A (ko) |
| CA (1) | CA2888604A1 (ko) |
| DE (1) | DE112012007060T8 (ko) |
| GB (1) | GB2520910A (ko) |
| WO (1) | WO2014069680A1 (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4306724A1 (en) | 2022-07-15 | 2024-01-17 | Yanmar Holdings Co., Ltd. | Electric work machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10458095B2 (en) * | 2015-01-07 | 2019-10-29 | Volvo Construction Equipment Ab | Control method for controlling an excavator and excavator comprising a control unit implementing such a control method |
| JP7634413B2 (ja) * | 2021-04-15 | 2025-02-21 | 株式会社小松製作所 | 電動ショベル |
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| JP2000212998A (ja) * | 1999-01-25 | 2000-08-02 | Yutani Heavy Ind Ltd | 建設機械の上部旋回体 |
| JP2001012404A (ja) * | 1999-06-28 | 2001-01-16 | Kobe Steel Ltd | ハイブリッド建設機械 |
| EP2256258A2 (en) * | 2009-05-25 | 2010-12-01 | Kobelco Construction Machinery Co., Ltd. | Working machine |
| US20120224942A1 (en) * | 2011-03-02 | 2012-09-06 | Deere & Company | Electrical cabinet |
| JP2012202065A (ja) * | 2011-03-24 | 2012-10-22 | Komatsu Ltd | 電動式作業車両及びそのバッテリ保持構造 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3877901B2 (ja) * | 1999-03-31 | 2007-02-07 | コベルコ建機株式会社 | ショベル |
| US20110056194A1 (en) * | 2009-09-10 | 2011-03-10 | Bucyrus International, Inc. | Hydraulic system for heavy equipment |
| JP5172898B2 (ja) * | 2010-06-15 | 2013-03-27 | 日立建機株式会社 | 電動式建設機械 |
| 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 |
| CN103534418B (zh) * | 2011-05-16 | 2016-06-08 | 日立建机株式会社 | 工程机械 |
| NL2008634C2 (nl) * | 2012-04-13 | 2013-10-16 | Hudson Bay Holding B V | Mobiele inrichting. |
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2012
- 2012-10-29 US US14/437,468 patent/US20150284933A1/en not_active Abandoned
- 2012-10-29 WO PCT/KR2012/008941 patent/WO2014069680A1/ko not_active Ceased
- 2012-10-29 KR KR1020157010788A patent/KR20150063479A/ko not_active Ceased
- 2012-10-29 GB GB1506476.9A patent/GB2520910A/en not_active Withdrawn
- 2012-10-29 DE DE112012007060.7T patent/DE112012007060T8/de not_active Expired - Fee Related
- 2012-10-29 CA CA2888604A patent/CA2888604A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000212998A (ja) * | 1999-01-25 | 2000-08-02 | Yutani Heavy Ind Ltd | 建設機械の上部旋回体 |
| JP2001012404A (ja) * | 1999-06-28 | 2001-01-16 | Kobe Steel Ltd | ハイブリッド建設機械 |
| EP2256258A2 (en) * | 2009-05-25 | 2010-12-01 | Kobelco Construction Machinery Co., Ltd. | Working machine |
| US20120224942A1 (en) * | 2011-03-02 | 2012-09-06 | Deere & Company | Electrical cabinet |
| JP2012202065A (ja) * | 2011-03-24 | 2012-10-22 | Komatsu Ltd | 電動式作業車両及びそのバッテリ保持構造 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4306724A1 (en) | 2022-07-15 | 2024-01-17 | Yanmar Holdings Co., Ltd. | Electric work machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2888604A1 (en) | 2014-05-08 |
| DE112012007060T8 (de) | 2015-09-10 |
| KR20150063479A (ko) | 2015-06-09 |
| GB201506476D0 (en) | 2015-06-03 |
| DE112012007060T5 (de) | 2015-08-13 |
| US20150284933A1 (en) | 2015-10-08 |
| GB2520910A (en) | 2015-06-03 |
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