JP2008008094A - Construction machine - Google Patents

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Publication number
JP2008008094A
JP2008008094A JP2006181640A JP2006181640A JP2008008094A JP 2008008094 A JP2008008094 A JP 2008008094A JP 2006181640 A JP2006181640 A JP 2006181640A JP 2006181640 A JP2006181640 A JP 2006181640A JP 2008008094 A JP2008008094 A JP 2008008094A
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Prior art keywords
control panel
electric motor
motor control
control board
construction machine
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JP2006181640A
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Japanese (ja)
Inventor
Takatoshi Oki
孝利 大木
達幸 ▲高▼田
Tatsuyuki Takada
Tokuji Tanaka
篤司 田中
Masami Ochiai
正己 落合
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Hitachi Construction Machinery Co Ltd
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Hitachi Construction Machinery Co Ltd
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Priority to JP2006181640A priority Critical patent/JP2008008094A/en
Publication of JP2008008094A publication Critical patent/JP2008008094A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a construction machine which is capable of securing a good field of vision even when enlarging an electric motor control board and enables the electric motor control board to be arranged without the influence of the limit of vehicle body dimensions. <P>SOLUTION: The hydraulic shovel 1 has a traveling body 3, a turning body 4 mounted on the traveling body 3, and the turning body 4 is provided with a driver's cab 6, a work device 10, electric motors 7a, 7b for hydraulically driving the front, an electric motor 8 for turning, the electric motor control board 9 implemented with an apparatus which controls these electric motors 7a, 7b, 8, and a control board installation part 9b for storing the electric motor control board 9. Specifically, the control board installation part 9b is formed at the rear part of the turning body 4, and the hydraulic shovel 1 is provided with doors 14a, 14b for covering the control board installation part 9b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、旋回体に複数の電動機と、これらの電動機を制御する機器を有する電動機制御盤を備えた油圧ショベル等の建設機械に関する。   The present invention relates to a construction machine such as a hydraulic excavator provided with a motor control panel having a plurality of electric motors and a device for controlling these electric motors in a revolving structure.

排気ガスによる大気汚染が忌避される作業現場、例えば住宅密集地やトンネル内、あるいは建屋内では、建設機械の駆動源であるエンジンを電動機に取り替えて排気ガスを無くしたり、動力を電動機で補助してエンジンから排出される排気ガスを抑制したりすることがある。なお、電動機を搭載した建設機械には、ヒューズ、ブレーカ、インバータ等の電動機制御機器を実装する電動機制御盤が搭載されるのが一般的である。また、電動機制御盤は、盤内の機器のメンテナンスを容易とするために外部からアクセス可能に配置することが必要になる。   At work sites where air pollution due to exhaust gas is avoided, such as in densely populated areas, tunnels, or buildings, the engine that drives the construction machine is replaced with an electric motor to eliminate the exhaust gas, or the power is assisted by the electric motor. The exhaust gas emitted from the engine may be suppressed. In general, a construction machine equipped with an electric motor is equipped with an electric motor control panel on which electric motor control devices such as a fuse, a breaker, and an inverter are mounted. In addition, the electric motor control panel needs to be arranged so as to be accessible from the outside in order to facilitate maintenance of the equipment in the panel.

このようなことから、従来、特許文献１に、走行体と、この走行体上に搭載される旋回体を有する建設機械、例えば油圧ショベルにおいて、旋回体に運転室と、作業装置と、電動機と、この電動機を制御する機器を実装する電動機制御盤とを備えるとともに、この電動機制御盤を収納する制御盤設置部を、旋回中心を挟んで運転室と反対側の旋回体の前端部に配置し、電動機制御盤に外部からアクセス可能に構成したことが開示されている。
特開２００３−２０６５５０公報 Therefore, conventionally, in Patent Document 1, in a construction machine having a traveling body and a revolving body mounted on the traveling body, for example, a hydraulic excavator, the revolving body includes a driver's cab, a working device, an electric motor, And an electric motor control panel for mounting the equipment for controlling the electric motor, and a control panel installation portion for storing the electric motor control panel is disposed at the front end portion of the revolving body on the opposite side of the cab with respect to the turning center. It is disclosed that the motor control panel can be accessed from the outside.
JP 2003-206550 A

上述した特許文献１に示される従来技術では、配備する電動機の数が多くなって電動機制御盤内の内蔵物が増加した場合に、電動機制御盤が巨大になり、これに伴って運転室からの視界が悪くなり、作業装置によって実施される作業の作業性が低下する懸念がある。また、車体寸法に制限を受ける場合に、電動機制御盤の配置設計が困難になる問題もある。   In the prior art disclosed in Patent Document 1 described above, when the number of motors to be deployed increases and the number of built-in objects in the motor control panel increases, the motor control panel becomes enormous, and accordingly, from the cab There is a concern that the field of view deteriorates and the workability of the work performed by the work device decreases. In addition, there is a problem that it is difficult to design the arrangement of the motor control panel when the body dimensions are limited.

本発明は、前述した従来技術における実状からなされたもので、その目的は、電動機制御盤を大きくしても良好な視界を確保できるとともに、車体寸法の制限による影響を受けずに電動機制御盤を配置できる建設機械を提供することにある。   The present invention was made from the actual situation in the prior art described above. The purpose of the present invention is to secure a good field of view even when the motor control panel is enlarged, and to prevent the motor control panel from being affected by restrictions on the body dimensions. It is to provide a construction machine that can be arranged.

この目的を達成するために、本発明は、走行体と、この走行体上に搭載される旋回体を有し、この旋回体に運転室と、作業装置と、複数の電動機と、これらの電動機を制御する機器を実装する電動機制御盤と、この電動機制御盤を収納する制御盤設置部とを備えた建設機械において、上記制御盤設置部を、上記旋回体の後方部分に設けたことを特徴としている。   In order to achieve this object, the present invention has a traveling body and a swivel body mounted on the traveling body, and the swivel body includes a cab, a work device, a plurality of electric motors, and these electric motors. In a construction machine including an electric motor control panel for mounting a device for controlling the electric motor and a control panel installation unit for housing the electric motor control panel, the control panel installation unit is provided in a rear portion of the revolving structure. It is said.

このように構成した本発明は、旋回体の後方部分に制御盤設置部を設けたことから、運転室からの視界が妨げられることがなく、これによって良好な視界を確保することができる。また、旋回体の後方部分においては、電動機制御盤を配置する広い配置空間を確保できるので、車体寸法の制限による影響を受けずに電動機制御盤を配置することができる。   According to the present invention configured as described above, since the control panel installation portion is provided in the rear portion of the revolving structure, the view from the cab is not obstructed, thereby ensuring a good view. Moreover, since a wide arrangement space for arranging the electric motor control panel can be secured in the rear part of the revolving structure, the electric motor control board can be arranged without being affected by the limitation of the vehicle body dimensions.

また、本発明は上記発明において、上記制御盤設置部を被覆可能な扉を備えたことを特徴としている。このように構成した本発明は、扉を閉じることにより制御盤設置部に収納された電動機制御盤を保護することができ、電動機制御盤に実装される機器のメンテナンス時には、扉を開くことにより容易にメンテナンスを実施することができる。   Further, the present invention is characterized in that in the above invention, a door capable of covering the control panel installation portion is provided. The present invention configured as described above can protect the motor control panel housed in the control panel installation section by closing the door, and can be easily opened by opening the door during maintenance of equipment mounted on the motor control panel. Maintenance can be performed.

また、本発明は上記発明において、上記制御盤設置部の下部にカウンタウエイトを搭載したことを特徴としている。このように構成した本発明は、制御盤設置部の下部に配置したカウンタウエイトによって、旋回中心に対する前後方向のモーメントを釣り合わせることができ、作業装置による作業の安全性を確保できる。   Further, the present invention is characterized in that, in the above-mentioned invention, a counterweight is mounted below the control panel installation portion. The present invention configured as described above can balance the moment in the front-rear direction with respect to the turning center by the counterweight disposed at the lower part of the control panel installation portion, and can ensure the safety of work by the work device.

本発明は、電動機制御盤を収納する制御盤設置部を、旋回体の後方部分に設けたことから、電動機制御盤を大きくしても良好な視界を確保でき、従来懸念されていた作業性の低下を防ぐことができる。また、車体寸法の制限による影響を受けずに電動機制御盤を配置でき、電動機制御盤の配置設計の自由度を従来よりも向上させることができる。   In the present invention, since the control panel installation portion for storing the motor control panel is provided in the rear portion of the revolving structure, it is possible to secure a good field of view even if the motor control panel is enlarged, and the workability that has been a concern in the past has been improved. Decline can be prevented. In addition, the motor control panel can be arranged without being affected by the restrictions on the vehicle body dimensions, and the degree of freedom in designing the arrangement of the motor control panel can be improved as compared with the prior art.

以下，本発明に係る建設機械を実施するための最良の形態を図に基づいて説明する。   The best mode for carrying out the construction machine according to the present invention will be described below with reference to the drawings.

図１は本発明に係る建設機械の一実施形態を示す図で、（ａ）図は平面図、（ｂ）図は背面図、図２は本実施形態に備えられる扉を開いた状態を示す図で、（ａ）図は平面図、（ｂ）図は背面図、図３は本実施形態に備えられる制御盤設置部を示す図である。   1A and 1B are diagrams showing an embodiment of a construction machine according to the present invention, in which FIG. 1A is a plan view, FIG. 1B is a rear view, and FIG. 2 shows a state in which a door provided in the embodiment is opened. FIG. 3A is a plan view, FIG. 3B is a rear view, and FIG. 3 is a view showing a control panel installation section provided in the present embodiment.

本実施形態に係る建設機械は、例えば油圧ショベル１であり、この油圧ショベル１は、図１に示すように、走行体３と、この走行体３上に配置される旋回体４とを有している。走行体３は、走行用電動機５ａ，５ｂによって駆動されるクローラシュー２を備えている。旋回体３の前方部分の一方の側には、運転室６を配置してあり、前方部分のほぼ中央位置には作業装置１０を取り付けてある。この作業装置１０は、例えばブーム１１、アーム１２、バケット１３を含んでいる。   The construction machine according to the present embodiment is, for example, a hydraulic excavator 1, and the hydraulic excavator 1 includes a traveling body 3 and a revolving body 4 disposed on the traveling body 3 as illustrated in FIG. 1. ing. The traveling body 3 includes a crawler shoe 2 driven by the traveling electric motors 5a and 5b. A driver's cab 6 is arranged on one side of the front portion of the swivel body 3, and a work device 10 is attached to a substantially central position of the front portion. This working device 10 includes, for example, a boom 11, an arm 12, and a bucket 13.

また、旋回体４上には、図１の（ａ）図に示すように、作業装置１０に関連させて設けられるフロント油圧駆動用電動機７ａ，７ｂ、及びこの旋回体４を旋回させる旋回駆動用電動機８も設置してある。   Further, as shown in FIG. 1A, front hydraulic drive motors 7 a and 7 b provided in association with the work device 10 and a turning drive for turning the turning body 4 on the turning body 4. An electric motor 8 is also installed.

本実施形態は特に、図２の（ｂ）図、及び図３に示すように、上述の各電動機５ａ，５ｂ，７ａ，７ｂ，８を制御する後述の機器を実装する電動機制御盤９を収納する制御盤設置部９ｂを、旋回体３の後方部分を形成する制御盤カバー９の内部に設けてある。また、図１，２に示すように、制御盤設置部９ｂを被覆可能な扉１４ａ，１４ｂを備えている。   In this embodiment, as shown in FIG. 2B and FIG. 3, an electric motor control panel 9 is mounted which mounts a device to be described later for controlling the electric motors 5a, 5b, 7a, 7b, and 8 described above. A control panel installation portion 9b is provided inside the control panel cover 9 that forms the rear portion of the swing body 3. As shown in FIGS. 1 and 2, doors 14a and 14b that can cover the control panel installation portion 9b are provided.

この制御盤設置部９ｂに収納される電動機制御盤９には、図３に示すように、各電動機５ａ，５ｂ，７ａ，７ｂ，８を制御する機器、すなわち、走行用電動機５ａ，５ｂを制御する走行用インバータ１５ａ，１５ｂと、旋回用電動機８を制御する旋回用インバータ１６と、フロント油圧駆動用電動機７ａ，７ｂを制御するフロント油圧駆動用インバータ１７ａ，１７ｂ等を実装させてある。   As shown in FIG. 3, the motor control panel 9 accommodated in the control panel installation unit 9b controls the devices that control the motors 5a, 5b, 7a, 7b, and 8, that is, the traveling motors 5a and 5b. The traveling inverters 15a and 15b, the turning inverter 16 for controlling the turning motor 8, the front hydraulic drive inverters 17a and 17b for controlling the front hydraulic drive motors 7a and 7b, and the like are mounted.

このように構成した油圧ショベル１は、電動機制御盤９のインバータ１５ａ，１５ｂによる制御で走行用電動機５ａ，５ｂが作動し、クローラシュー２が駆動して走行が実施される。また、旋回用インバータ１６による制御で旋回駆動用電動機８が作動し、旋回体３の旋回が実施される。また、フロント油圧駆動用インバータ１７ａ，１７ｂによる制御でフロント油圧駆動用電動機７ａ，７ｂが作動し、作業装置１０による掘削作業等の各種の作業が実施される。   The hydraulic excavator 1 configured as described above is driven by the driving motors 5a and 5b operated by the control of the inverters 15a and 15b of the motor control panel 9, and the crawler shoe 2 is driven. Further, the turning drive motor 8 is operated under the control of the turning inverter 16, and the turning body 3 is turned. Further, the front hydraulic drive motors 7a and 7b are operated under the control of the front hydraulic drive inverters 17a and 17b, and various operations such as excavation work by the work device 10 are performed.

本実施形態によれば、旋回体４の後方部分に制御盤設置部９ｂを設けたことから、運転室６からの視界が妨げられることがなく、これによって良好な視界を確保することができ、視界が妨げられることに伴う作業装置１０による作業性の低下を防ぐことができる。また、旋回体４の後方部分においては、電動機制御盤９を配置する広い配置空間を確保できるので、車体寸法の制限による影響を受けずに電動機制御盤９を配置することができる。これにより、電動機制御盤９の配置設計の自由度を向上させることができる。   According to the present embodiment, since the control panel installation portion 9b is provided in the rear portion of the revolving structure 4, the view from the cab 6 is not hindered, thereby ensuring a good view. It is possible to prevent the workability from being deteriorated by the working device 10 due to the hindrance to the visual field. Further, in the rear part of the revolving structure 4, a wide arrangement space for arranging the electric motor control panel 9 can be secured, so that the electric motor control panel 9 can be arranged without being affected by the limitation of the vehicle body dimensions. Thereby, the freedom degree of arrangement design of the electric motor control panel 9 can be improved.

また、扉１４ａ，１４ｂを閉じることにより制御盤設置部９ｂに収納された電動機制御盤９を保護することができ、電動機制御盤９に実装される機器、すなわち、走行用インバータ１５ａ，１５ｂ、旋回用インバータ１６、フロント油圧駆動用インバータ１７ａ，１７ｂ等のメンテナンス時には、扉を開くことにより容易にメンテナンスを実施することができる。   Further, by closing the doors 14a and 14b, the electric motor control panel 9 housed in the control panel installation portion 9b can be protected, and equipment mounted on the electric motor control panel 9, that is, traveling inverters 15a and 15b, turning When the maintenance inverter 16 and the front hydraulic drive inverters 17a and 17b are maintained, the maintenance can be easily performed by opening the door.

図４は本発明の別の実施形態の要部を構成する制御盤設置部を示す図である。この別の実施形態は、図４に示すように、旋回体４の後方部分に設けた制御盤設置部９内の下部にカウンタウエイト１８を搭載した構成にしてある。その他の構成は、上述した図１−３に示した実施形態と同等である。   FIG. 4 is a diagram showing a control panel installation unit constituting the main part of another embodiment of the present invention. In this other embodiment, as shown in FIG. 4, a counterweight 18 is mounted on the lower portion in the control panel installation portion 9 provided in the rear portion of the revolving structure 4. Other configurations are the same as those of the embodiment shown in FIGS.

このように構成した別の実施形態は、特に、旋回体４の旋回中心に対する前後方向のモーメントを釣り合わせることができ、作業装置１０による作業の安全性を確保でき、作業性の向上に貢献する。   Another embodiment configured in this manner can balance the moment in the front-rear direction with respect to the turning center of the revolving structure 4, can ensure the safety of work by the work device 10, and contributes to the improvement of workability. .

本発明に係る建設機械の一実施形態を示す図で、（ａ）図は平面図、（ｂ）図は背面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows one Embodiment of the construction machine which concerns on this invention, (a) A figure is a top view, (b) A figure is a rear view. 本実施形態に備えられる扉を開いた状態を示す図で、（ａ）図は平面図、（ｂ）図は背面図である。It is a figure which shows the state which opened the door with which this embodiment is equipped, (a) A figure is a top view, (b) A figure is a rear view. 本実施形態に備えられる制御盤設置部を示す図である。It is a figure which shows the control panel installation part with which this embodiment is equipped. 本発明の別の実施形態の要部を構成する制御盤設置部を示す図である。It is a figure which shows the control panel installation part which comprises the principal part of another embodiment of this invention.

符号の説明Explanation of symbols

１ 油圧ショベル（建設機械）
３ 走行体
４ 旋回体
５ａ，５ｂ 走行用電動機
６ 運転室
７ａ，７ｂ フロント油圧駆動用電動機
８ 旋回駆動用電動機
９ 電動機制御盤
９ａ 制御盤カバー
９ｂ 制御盤設置部
１０ 作業装置
１４ａ，１４ｂ 扉
１５ａ，１５ｂ 走行用インバータ
１６ 旋回用インバータ
１７ａ，１７ｂ フロント油圧駆動用インバータ
１８ カウンタウエイト 1 Excavator (construction machine)
DESCRIPTION OF SYMBOLS 3 Traveling body 4 Revolving body 5a, 5b Driving electric motor 6 Driver's cab 7a, 7b Front hydraulic drive motor 8 Turning driving motor 9 Motor control panel 9a Control panel cover 9b Control panel installation part 10 Working device 14a, 14b Door 15a 15b Traveling inverter 16 Turning inverter 17a, 17b Front hydraulic drive inverter 18 Counterweight

Claims (3)

走行体と、この走行体上に搭載される旋回体を有し、この旋回体に運転室と、作業装置と、複数の電動機と、これらの電動機を制御する機器を実装する電動機制御盤と、この電動機制御盤を収納する制御盤設置部とを備えた建設機械において、
上記制御盤設置部を、上記旋回体の後方部分に設けたことを特徴とする建設機械。 A traveling body, and a revolving body mounted on the traveling body, and an electric motor control panel on which a cab, a work device, a plurality of electric motors, and devices for controlling these electric motors are mounted on the revolving body, In a construction machine equipped with a control panel installation section for storing this electric motor control panel,
A construction machine, wherein the control panel installation part is provided in a rear part of the revolving structure. 上記請求項１記載の発明において、
上記制御盤設置部を被覆可能な扉を備えたことを特徴とする建設機械。 In the invention of claim 1,
A construction machine comprising a door capable of covering the control panel installation part. 上記請求項１または２記載の発明において、
上記制御盤設置部の下部にカウンタウエイトを搭載したことを特徴とする建設機械。 In the invention according to claim 1 or 2,
A construction machine comprising a counterweight mounted below the control panel installation section.
JP2006181640A 2006-06-30 2006-06-30 Construction machine Pending JP2008008094A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55161740U (en) * 1979-05-11 1980-11-20
JPH10102543A (en) * 1996-09-27 1998-04-21 Furukawa Co Ltd Electric shovel system excavator
JP2000283107A (en) * 1999-03-31 2000-10-13 Kobelco Contstruction Machinery Ltd Shovel
JP2003226494A (en) * 2002-02-06 2003-08-12 Komatsu Forklift Co Ltd Counterweight of industrial vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55161740U (en) * 1979-05-11 1980-11-20
JPH10102543A (en) * 1996-09-27 1998-04-21 Furukawa Co Ltd Electric shovel system excavator
JP2000283107A (en) * 1999-03-31 2000-10-13 Kobelco Contstruction Machinery Ltd Shovel
JP2003226494A (en) * 2002-02-06 2003-08-12 Komatsu Forklift Co Ltd Counterweight of industrial vehicle

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