WO2012070704A1 - 전기식 굴삭기의 터닝조인트 - Google Patents
전기식 굴삭기의 터닝조인트 Download PDFInfo
- Publication number
- WO2012070704A1 WO2012070704A1 PCT/KR2010/008396 KR2010008396W WO2012070704A1 WO 2012070704 A1 WO2012070704 A1 WO 2012070704A1 KR 2010008396 W KR2010008396 W KR 2010008396W WO 2012070704 A1 WO2012070704 A1 WO 2012070704A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electric
- excavator
- coil
- power
- turning joint
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- 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
- E02F9/006—Pivot joint assemblies
-
- 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
- E02F9/2091—Control of energy storage means for electrical energy, e.g. battery or capacitors
-
- 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
- E02F9/2095—Control of electric, electro-mechanical or mechanical equipment not otherwise provided for, e.g. ventilators, electro-driven fans
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/18—Rotary transformers
Definitions
- the present invention relates to a turning joint of an electric excavator, and more particularly, in an equipment in which an electric motor is to be used, such as an electric excavator (or a hybrid excavator), the power of the upper portion is lowered due to the characteristics of the electric excavator to be swiveled.
- the problem that cannot be transmitted through wiring, etc. relates to a turning joint of an electric excavator solved by applying a principle of a transformer to an excavator turning unit so that power can be transferred to the lower part.
- an excavator in particular, an electric excavator has a part called the turning joint in the turning portion is configured to be able to transfer the hydraulic source of the upper portion without using the hydraulic wiring.
- the upper hydraulic source can be supplied to the lower driving hydraulic motor so that the driving can be performed.
- a power transmission device having the same concept as a conventional hydraulic turning joint is required.
- the present invention was developed to meet the above needs, by applying a transformer principle to the turning part to configure the electric joint turning joint to transfer the electrical energy of the upper part to the lower driving even during the turning operation of the electric excavator. It is an object of the present invention to provide a turning joint of an electric excavator.
- DC / AC converter for converting DC electric energy of the electrical energy storage device located in the upper swing of the excavator into AC, electromagnetic induction of the electric energy of the AC component wound on the upper swing and converted in the DC / AC converter to the lower traveling body
- it is characterized in that it further comprises a power interruption means for intermittent power supply of the DC / AC converter to supply only when the driving electric motor of the lower body needs power. .
- the number of windings of the upper coil wound around the upper pivot and the number of windings of the lower coil wound around the lower traveling body are adjusted.
- the voltage is adjusted according to the above.
- the present invention configures a turning joint for an electric excavator (or hybrid excavator) so that the electric energy of the upper part can be transferred to the lower running body by applying the transformer principle, so that the driving of the lower part even during the turning operation of the upper turning body in the electric excavator
- the electric motor can be supplied with power to enable the driving operation.
- the number of turns of the upper coil wound around the upper swing body and the lower coil wound around the lower running body The voltage can be adjusted by adjusting the number of windings.
- FIG. 1 is a block diagram showing a turning joint of an electric excavator according to the present invention.
- FIG. 2 is a flow chart showing in sequence the operation of the turning joint of the electric excavator according to the present invention
- Figure 3 is a view showing an electric excavator equipped with a turning joint according to the present invention as an example
- electrical energy storage device 102 DC / AC converter
- inverter 106 electric motor for driving
- FIG. 1 is a block diagram showing a turning joint of an excavator, in particular an electric excavator, according to the present invention.
- the apparatus includes an electric energy storage device 101, a DC / AC converter 102, an upper coil 103, a lower coil 104, an inverter 105, and an electric motor 106 for driving. ), Including the structure.
- the DC / AC converter 102 for converting the DC electrical energy of the electrical energy storage device 101 located in the upper swing of the electric excavator (or hybrid excavator) into an alternating current, and wound on the upper swing and
- the upper coil 103 for transmitting the electrical energy of the AC component converted by the AC converter 102 to the lower traveling body by electromagnetic induction, the lower wound around the lower traveling body to receive the electromotive force of the AC component transmitted from the upper coil 103.
- the coil 104 and the inverter 105 for supplying the electromotive force of the AC component received from the lower coil 104 to the power of the electric motor 106 for driving.
- the number of turns of the upper coil 103 and the lower traveling body wound around the upper swinging body By adjusting the number of windings of the lower coil 104 wound on the structure to be used to adjust the voltage.
- a predetermined power interruption means (not shown) which interrupts the power of the DC / AC converter 102 to supply only when the driving electric motor 106 of the lower body requires power to reduce energy loss. It is made of a structure that includes more.
- the upper coil 103 is wound on the upper pivot and electrically connected to the DC / AC converter 102, wherein the DC / AC converter 102 is located in the upper pivot of the electric excavator (or hybrid excavator).
- the direct current electrical energy of the energy storage device 101 is converted into alternating current
- the electrical energy of the alternating current component converted by the direct current / AC converter 102 is transmitted to the lower traveling body by electromagnetic induction. That is, when current flows through the upper coil 103 wound around the upper swinging body, electromotive force is induced to the lower coil 104 wound around the lower traveling body due to the electromagnetic induction phenomenon.
- this transformer principle the electrical energy in the upper body is transferred to the lower side.
- the lower coil 104 is wound around the lower traveling body to receive electromotive force of an AC component transmitted from the upper coil 103 by electromagnetic induction.
- the electromotive force of the AC component thus transmitted is transferred to the inverter 105 and supplied to the power of the electric motor 106 for driving.
- the inverter 105 is electrically connected to the lower coil 104.
- the lower coil 104 When the lower coil 104 is wound around the lower traveling body to receive the electromotive force of the AC component transmitted from the upper coil 103, the lower coil ( It is to supply the electromotive force of the AC component received from the 104 to the power of the connected electric motor 106.
- Figure 2 is a flow chart showing in sequence the operation of the turning joint of the electric excavator according to the present invention.
- the present invention first, the DC / AC converter converts the DC electrical energy of the electrical energy storage device to AC, and then transfers the converted AC electrical energy to the upper coil (S201 ⁇ S202).
- the DC / AC converter connected to the electric energy storage device located in the upper swing structure of the electric excavator (or hybrid excavator) converts the DC electric energy of the electric energy storage device into AC and then converts the converted AC electric energy into the upper part. It is delivered to the upper coil wound around the turning body.
- the upper coil transfers the electrical energy of the alternating current component converted by the DC / AC converter to the lower traveling body by electromagnetic induction.
- the lower coil is wound around the lower traveling body to receive the electromotive force of the AC component transmitted from the upper coil by electromagnetic induction.
- the inverter supplies the electromotive force of the AC component received from the lower coil to the power of the connected driving electric motor.
- the electromotive force of the AC component transmitted to the lower body can be used as a power source for the traveling electric motor connected to the inverter.
- the voltage of the electric energy storage device located on the upper side and the operating voltage range of the driving electric motor located on the lower side are different, the number of turns of the upper coil wound around the upper swing body and the lower coil wound on the lower traveling body The voltage can be adjusted by adjusting the number of windings.
- the power loss of the DC / AC converter may be interrupted through a predetermined power interrupting means so that the electric motor for driving the lower body may supply only when the power is needed, thereby reducing energy loss.
- the present invention configures a turning joint for an electric excavator (or hybrid excavator) so that the electric energy of the upper portion can be transferred to the lower traveling body by applying the transformer principle, so that the turning structure of the upper turning body in the electric excavator Therefore, power can be supplied to the driving electric motor at the bottom to enable the driving operation.
- FIG 3 illustrates an electric excavator (or hybrid excavator) equipped with an electric excavator turning joint according to the present invention as an example.
- the excavator is wound around a DC / AC converter for converting DC electric energy of an electric energy storage device located in an upper swing structure of an electric excavator (or a hybrid excavator) into an AC, and an upper swing structure.
- An upper coil which transfers the electric energy of the AC component converted by the DC / AC converter to the lower traveling body by electromagnetic induction, a lower coil wound around the lower traveling body to receive the electromotive force of the AC component transmitted from the upper coil, and the lower coil It is made of a structure comprising an inverter for supplying the electromotive force of the AC component received from the electric motor for driving.
- a turning joint for an electric excavator (or hybrid excavator) is constructed so that the upper electric energy can be transferred to the lower traveling body, and even in the electric excavator, even during the turning operation of the upper turning body,
- the electric motor can be supplied with power to enable the driving operation.
- a transformer is generally composed of a primary winding connected to a sinusoidal power source and a secondary winding connected to a load. Then, the magnetic flux is generated in the clockwise direction due to the sine wave power source on the primary side, and each coil generates a voltage proportional to the number of turns N1 and N2 of the coil and the rate of change of the magnetic flux in the coil. Assuming there is no leakage, the same amount of magnetic flux exists in both coils. Therefore, organic electromotive forces Ep and Es are generated on the primary and secondary sides in proportion to the number of turns of the coil.
- the present invention is applicable to a turning joint of an electric excavator, and more particularly, in the equipment that requires the use of an electric motor, such as an electric excavator (or a hybrid excavator), the power supply of the upper portion is lowered due to the characteristics of the electric excavator that needs to be rotated. Problems that cannot be transmitted through furnace wiring or the like can be used for turning joints of electric excavators, which can be solved by applying the principle of the transformer to the turning part of the excavator so that power can be transferred to the lower part.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Operation Control Of Excavators (AREA)
- Component Parts Of Construction Machinery (AREA)
- Direct Current Feeding And Distribution (AREA)
- Inverter Devices (AREA)
Abstract
Description
Claims (3)
- 굴삭기의 상부 선회체에 위치하고 있는 전기에너지 저장장치의 직류 전기에너지를 교류로 변환시키는 직류/교류 변환기;상부 선회체에 감겨져 상기 직류/교류 변환기에서 변환시킨 교류 성분의 전기에너지를 하부 주행체로 전자기 유도로 전달하는 상부 코일;하부 주행체에 감겨져 상기 상부 코일로부터 전달된 교류 성분의 기전력을 전달받는 하부 코일; 및상기 하부 코일에서 전달받은 교류 성분의 기전력을 주행용 전기모터의 전원으로 공급하는 인버터를 포함하여 이루어진 전기식 굴삭기의 터닝조인트.
- 제 1 항에 있어서,에너지 손실을 줄일 수 있도록, 상기 직류/교류 변환기의 전원을 단속하여 하부체의 주행용 전기모터가 전원을 필요로 할 때만 공급할 수 있도록 한 전원 단속 수단을 더 포함하여 이루어진 것을 특징으로 하는 전기식 굴삭기의 터닝조인트.
- 제 1 항에 있어서,상기 상부의 전기에너지 저장장치의 전압과 하부의 주행용 전기모터의 사용 전압 범위가 다른 경우, 상부 선회체에 감겨있는 상부 코일의 권선수와 하부 주행체에 감겨져 있는 하부 코일의 권선수 조절에 따라 전압 조정이 이루어지는 것을 특징으로 하는 전기식 굴삭기의 터닝조인트.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/885,106 US9349532B2 (en) | 2010-11-25 | 2010-11-25 | Turning joint for electric excavator |
CN201080070288XA CN103222152A (zh) | 2010-11-25 | 2010-11-25 | 用于电动挖掘机的转向节 |
PCT/KR2010/008396 WO2012070704A1 (ko) | 2010-11-25 | 2010-11-25 | 전기식 굴삭기의 터닝조인트 |
EP10859968.9A EP2645533A1 (en) | 2010-11-25 | 2010-11-25 | Turning joint for electric excavator |
KR1020137012100A KR20130135251A (ko) | 2010-11-25 | 2010-11-25 | 전기식 굴삭기의 터닝조인트 |
JP2013540873A JP2014505185A (ja) | 2010-11-25 | 2010-11-25 | 電気式掘削機のターニングジョイント |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/KR2010/008396 WO2012070704A1 (ko) | 2010-11-25 | 2010-11-25 | 전기식 굴삭기의 터닝조인트 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012070704A1 true WO2012070704A1 (ko) | 2012-05-31 |
Family
ID=46146032
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2010/008396 WO2012070704A1 (ko) | 2010-11-25 | 2010-11-25 | 전기식 굴삭기의 터닝조인트 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9349532B2 (ko) |
EP (1) | EP2645533A1 (ko) |
JP (1) | JP2014505185A (ko) |
KR (1) | KR20130135251A (ko) |
CN (1) | CN103222152A (ko) |
WO (1) | WO2012070704A1 (ko) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5341005B2 (ja) * | 2010-03-29 | 2013-11-13 | 日立建機株式会社 | 建設機械 |
SE542381C2 (sv) | 2012-04-23 | 2020-04-21 | Brokk Ab | Elektiskt driven demoleringsrobot och dess kraftförsörjningssystem |
US10352023B2 (en) | 2014-06-17 | 2019-07-16 | Volvo Construction Equipment Ab | Power connection device |
JP6577300B2 (ja) * | 2015-08-27 | 2019-09-18 | 国立大学法人茨城大学 | 磁気浮上姿勢制御装置 |
DE102016121724A1 (de) * | 2016-11-14 | 2018-05-17 | Hamm Ag | Baumaschine |
DE102016124341A1 (de) * | 2016-12-14 | 2018-06-14 | Hamm Ag | Baumaschine |
JP6760146B2 (ja) * | 2017-03-09 | 2020-09-23 | 株式会社タダノ | クレーン |
DE102018206403A1 (de) * | 2018-04-25 | 2019-10-31 | Zf Friedrichshafen Ag | Antriebsanordnung für einen Mobilbagger |
JP7063796B2 (ja) * | 2018-12-19 | 2022-05-09 | ヤンマーパワーテクノロジー株式会社 | 電動式建設機械 |
JP2020100997A (ja) * | 2018-12-21 | 2020-07-02 | ヤンマーパワーテクノロジー株式会社 | 電動式建設機械 |
WO2021035477A1 (en) | 2019-08-26 | 2021-03-04 | Guangxi Liugong Machinery Co., Ltd. | Electric excavator |
CN113131624A (zh) * | 2021-04-22 | 2021-07-16 | 北京机械设备研究所 | 一种载车转塔无线供电装置 |
JP2024040557A (ja) * | 2022-09-13 | 2024-03-26 | 株式会社小松製作所 | 給電ユニット及びスイベルジョイント |
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KR950007221A (ko) * | 1993-08-31 | 1995-03-21 | 김연수 | 굴삭기 전자제어장치의 과전류 보호회로 |
JP2001214684A (ja) * | 2000-01-31 | 2001-08-10 | Harmonic Drive Syst Ind Co Ltd | 掘削機の掘削方向制御装置用電磁連結装置 |
KR20100018969A (ko) * | 2008-08-08 | 2010-02-18 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 작업장치 보조 구동수단이 구비된 굴삭기 |
KR20100106215A (ko) * | 2009-03-23 | 2010-10-01 | 리브에르 프랑스 에스에이에스 | 유압 굴삭기용 구동장치 |
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JPS63266292A (ja) | 1987-04-20 | 1988-11-02 | 株式会社小松製作所 | スイベルジヨイント |
JPH0767261A (ja) | 1993-08-27 | 1995-03-10 | Shikoku Keisoku Kogyo Kk | 充電装置 |
JP3828679B2 (ja) * | 1999-06-28 | 2006-10-04 | 株式会社神戸製鋼所 | ハイブリッド建設機械 |
US6674836B2 (en) * | 2000-01-17 | 2004-01-06 | Kabushiki Kaisha Toshiba | X-ray computer tomography apparatus |
JP3859982B2 (ja) * | 2001-04-27 | 2006-12-20 | 株式会社神戸製鋼所 | ハイブリッド建設機械の電力制御装置 |
JP4712651B2 (ja) | 2006-09-11 | 2011-06-29 | 日立建機株式会社 | 回転式接続装置および作業機 |
US7786622B2 (en) * | 2007-03-01 | 2010-08-31 | Graco Children's Products Inc. | Juvenile product inductive power transfer |
JP4311478B2 (ja) * | 2007-05-30 | 2009-08-12 | ダイキン工業株式会社 | 旋回体の駆動装置 |
JP5329929B2 (ja) | 2008-12-02 | 2013-10-30 | 昭和飛行機工業株式会社 | 非接触給電装置 |
-
2010
- 2010-11-25 WO PCT/KR2010/008396 patent/WO2012070704A1/ko active Application Filing
- 2010-11-25 KR KR1020137012100A patent/KR20130135251A/ko not_active Application Discontinuation
- 2010-11-25 JP JP2013540873A patent/JP2014505185A/ja active Pending
- 2010-11-25 CN CN201080070288XA patent/CN103222152A/zh active Pending
- 2010-11-25 US US13/885,106 patent/US9349532B2/en not_active Expired - Fee Related
- 2010-11-25 EP EP10859968.9A patent/EP2645533A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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KR950007221A (ko) * | 1993-08-31 | 1995-03-21 | 김연수 | 굴삭기 전자제어장치의 과전류 보호회로 |
JP2001214684A (ja) * | 2000-01-31 | 2001-08-10 | Harmonic Drive Syst Ind Co Ltd | 掘削機の掘削方向制御装置用電磁連結装置 |
KR20100018969A (ko) * | 2008-08-08 | 2010-02-18 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 작업장치 보조 구동수단이 구비된 굴삭기 |
KR20100106215A (ko) * | 2009-03-23 | 2010-10-01 | 리브에르 프랑스 에스에이에스 | 유압 굴삭기용 구동장치 |
Also Published As
Publication number | Publication date |
---|---|
JP2014505185A (ja) | 2014-02-27 |
US9349532B2 (en) | 2016-05-24 |
CN103222152A (zh) | 2013-07-24 |
KR20130135251A (ko) | 2013-12-10 |
US20130234507A1 (en) | 2013-09-12 |
EP2645533A1 (en) | 2013-10-02 |
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