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JP2009164529A - Work machine - Google Patents

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Publication number
JP2009164529A
JP2009164529A JP2008003177A JP2008003177A JP2009164529A JP 2009164529 A JP2009164529 A JP 2009164529A JP 2008003177 A JP2008003177 A JP 2008003177A JP 2008003177 A JP2008003177 A JP 2008003177A JP 2009164529 A JP2009164529 A JP 2009164529A
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Prior art keywords
fan
solar cell
battery
work machine
power
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JP2008003177A
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Japanese (ja)
Inventor
Isao Konishi
勲 小西
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Caterpillar Japan Ltd
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Caterpillar Japan Ltd
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Priority to JP2008003177A priority Critical patent/JP2009164529A/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

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  • Component Parts Of Construction Machinery (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Photovoltaic Devices (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the rise of the room temperature of an operating room and to suppress the discharge of a battery in a suspension state of a work machine. <P>SOLUTION: The work machine comprises a solar battery, a fan driven by the generated power of the solar battery for ventilating the operating room, and a battery for a power source for electrical components of a machine body, which is connected between the solar battery and the fan through a reverse current preventing diode, and in which generated power of the solar battery is stored. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、作業機械、さらに詳しくは、運転室の室温上昇およびバッテリーの放電を抑制することができる作業機械に関する。   The present invention relates to a work machine, and more particularly, to a work machine that can suppress an increase in room temperature of a cab and discharge of a battery.

作業機械、例えばホイールローダ、ブルドーザなどは、運転室に空調装置を備えるとともに、電子制御用コントローラを含む多くの電装品を備えている。この種の作業機械は、エンジンを停止させた休止状態で屋外に放置されることが多い。また、運転室は周囲の作業視界を良好にするためにガラス面を多く備えている。したがって、特に夏場などの炎天下において機械を休止状態で屋外に放置しておくと、運転室内が高温になり、再稼動時には空調装置を用いて室内温度を下げるのに、エンジン動力、バッテリー電力などを多く消費することになり、燃料消費が増加する問題がある。   Work machines such as wheel loaders and bulldozers are equipped with an air conditioner in the cab and many electrical components including an electronic control controller. This type of work machine is often left outdoors while the engine is stopped. In addition, the cab is provided with many glass surfaces in order to improve the surrounding work visibility. Therefore, if the machine is left outside in a hot state, especially in hot weather, such as in summer, the operating room becomes hot, and the engine temperature, battery power, etc. There is a problem that fuel consumption is increased because of the large consumption.

室温抑制対策として、太陽電池の発電電力によって運転室の換気扇を駆動するものが提案されている（例えば、特許文献１参照）。
特開平８−１０４１２８号公報（第１図） As a countermeasure for room temperature suppression, one that drives a ventilation fan in a cab with the generated power of a solar cell has been proposed (see, for example, Patent Document 1).
JP-A-8-104128 (FIG. 1)

しかしながら、太陽電池を用いる上述の作業機械には、次のとおりの解決の望まれている課題がある。   However, the above-described working machine using a solar cell has a problem that is desired to be solved as follows.

すなわち、作業機械は、電子制御用コントローラのような、作業機械が休止状態のときにもメモリ内データ保持や通信用などに常時微小電流が消費される電装品を多数備えている。したがって、作業機械が長期間休止すると、あるいは休止が重なると、バッテリーが放電してしまう。特に、運転室の換気扇を太陽電池とバッテリーの電力によって駆動できるようにした場合には、バッテリーの放電が早められてしまう。   That is, the work machine is provided with a large number of electrical components such as an electronic control controller that always consumes a minute current for holding data in a memory or for communication even when the work machine is in a resting state. Therefore, when the work machine is stopped for a long time or when the work is overlapped, the battery is discharged. In particular, when the ventilation fan in the cab can be driven by the power of the solar cell and the battery, the battery discharge is accelerated.

本発明は上記事実に鑑みてなされたもので、その技術的課題は、作業機械の休止状態における、運転室の室温の上昇を抑制するとともに、バッテリーの放電を抑制することができる、作業機械を提供することである。   The present invention has been made in view of the above facts, and its technical problem is to provide a work machine that can suppress an increase in the room temperature of the cab and a battery discharge while the work machine is in a resting state. Is to provide.

本発明によれば上記技術的課題を解決する作業機械として、太陽電池と、この太陽電池の発電電力によって駆動され運転室を換気するファンと、この太陽電池とファンとの間に逆流防止ダイオードを介して接続され、太陽電池の発電電力が蓄電される、機体の電装品用電源のバッテリーと、を備えていることを特徴とする作業機械が提供される。   According to the present invention, as a work machine that solves the above technical problem, a solar cell, a fan that is driven by the generated power of the solar cell and ventilates the cab, and a backflow prevention diode is provided between the solar cell and the fan. There is provided a work machine comprising: a battery for a power supply for an electrical component of a fuselage, which is connected via a power source and stores generated power of a solar cell.

好適には、上記太陽電池とファンの間に、ファンへの電力を断続する手動スイッチを備えている。また、上記太陽電池とファンの間に、運転室内の温度を検知し、検知温度が所定の温度を越えたときにはファンを作動させ、所定温度以下のときには電力を断って作動を止める自動スイッチを備えている。   Preferably, a manual switch for intermittently supplying power to the fan is provided between the solar cell and the fan. In addition, an automatic switch is provided between the solar cell and the fan to detect the temperature in the cab and activate the fan when the detected temperature exceeds a predetermined temperature and turn off the power when the detected temperature is lower than the predetermined temperature. ing.

本発明に従って構成された作業機械は、太陽電池と、この太陽電池の発電電力によって駆動され運転室を換気するファンと、この太陽電池とファンとの間に逆流防止ダイオードを介して接続され、太陽電池の発電電力を蓄電する機体の電装品用電源のバッテリーを備えている。   A work machine configured according to the present invention is connected to a solar cell, a fan driven by power generated by the solar cell and ventilating a cab, and a backflow prevention diode connected between the solar cell and the fan. It is equipped with a power source battery for the electrical equipment of the fuselage that stores the generated power of the battery.

したがって、作業機械の休止状態においては、太陽電池の発電電力によってファンを駆動し運転室を換気するので運転室の室温の上昇が抑制され、さらに太陽電池の発電電力でバッテリーの充電を補足するとともにバッテリーの電力をファンの駆動に用いないので、バッテリーの放電を抑制することができる。   Therefore, when the work machine is in a resting state, the fan is driven by the generated power of the solar cell to ventilate the cab, thereby suppressing the increase in the room temperature of the cab, and further supplementing the charging of the battery with the generated power of the solar cell. Since the power of the battery is not used for driving the fan, the battery discharge can be suppressed.

以下、本発明に従って構成された作業機械について、代表的な作業機械であるホイールローダにおける好適実施形態を図示している添付図面を参照してさらに詳細に説明する。   Hereinafter, a working machine configured according to the present invention will be described in more detail with reference to the accompanying drawings illustrating a preferred embodiment of a wheel loader which is a typical working machine.

図２を参照してホイールローダについて説明する。全体を番号２で示すホイールローダは、前車輪４および作業装置６を備えた前車体８と、後車輪１０、エンジン室１２およびに運転室１４を備えた後車体１６を具備している。運転室１４は前後左右の略全面がガラス面で形成されている。   The wheel loader will be described with reference to FIG. The wheel loader indicated as a whole by number 2 includes a front vehicle body 8 provided with a front wheel 4 and a work device 6, and a rear vehicle body 16 provided with a rear wheel 10, an engine compartment 12, and a cab 14. The driver's cab 14 is formed of a glass surface in substantially the entire front, rear, left and right.

図２とともに図１を参照して説明する。ホイールローダ２は、運転室１４の屋根の上に取付けられた太陽電池１８と、太陽電池１８の発電電力によって駆動され運転室１４を換気する運転室１４の後面上部に取付けられたファン２０と、太陽電池１８とファン２０の間に逆流防止ダイオード２２を介して接続され太陽電池１８の発電電力が蓄電される機体の電装品用電源のバッテリー２４を備えている。   1 will be described with reference to FIG. The wheel loader 2 includes a solar cell 18 mounted on the roof of the cab 14, a fan 20 mounted on the upper rear surface of the cab 14 driven by the generated power of the solar cell 18 and ventilating the cab 14, A battery 24 is connected between the solar cell 18 and the fan 20 via a backflow prevention diode 22 and is used as a power source for electrical components of the fuselage in which the power generated by the solar cell 18 is stored.

バッテリー２４は、運転室１４の座席の下方に設置されている。バッテリー２４は、ホイールローダ２の電子制御用コントローラを含む電装品類２６に電力を供給する周知のものであり、エンジンなどの動力源の充電手段（図示していない）にも接続されている。かくしてバッテリー２４は、太陽電池１８の発電電力によって充電が補足される。   The battery 24 is installed below the seat of the cab 14. The battery 24 is a well-known battery that supplies electric power to the electrical components 26 including the electronic control controller of the wheel loader 2, and is also connected to charging means (not shown) of a power source such as an engine. Thus, charging of the battery 24 is supplemented by the power generated by the solar cell 18.

ファン２０は、運転室１４の床下部分から外気を運転室１４に吸入し、運転室１４内の空気を室外に排出する。   The fan 20 sucks outside air from the under floor portion of the cab 14 into the cab 14 and discharges the air in the cab 14 to the outside.

主として図１を参照して説明する。太陽電池１８とファン２０の間には、ファン２０への電力を断続する手動スイッチ２８が備えられている。手動スイッチ２８とファン２０の間には自動スイッチ３０が備えられている。自動スイッチ３０は、運転室１４内の温度を検知し、検知温度が所定の温度を越えたときにはファン２０と手動スイッチ２８を「続」にし、所定温度以下のときには「断」にする。   A description will be given mainly with reference to FIG. Between the solar cell 18 and the fan 20, a manual switch 28 that interrupts power to the fan 20 is provided. An automatic switch 30 is provided between the manual switch 28 and the fan 20. The automatic switch 30 detects the temperature in the cab 14 and “continues” the fan 20 and the manual switch 28 when the detected temperature exceeds a predetermined temperature, and “disconnects” when the detected temperature is lower than the predetermined temperature.

自動スイッチ３０は、周知のサーモスイッチである。所定の温度は、ホイールローダ２の稼動環境などによって設定を調整するための調整手段３０ａを備えている。すなわち、所定温度は、炎暑の時期、場所においては低目に、寒冷の時期、場所においては高目に設定される。   The automatic switch 30 is a well-known thermo switch. The predetermined temperature is provided with adjusting means 30a for adjusting the setting according to the operating environment of the wheel loader 2 or the like. In other words, the predetermined temperature is set to a low value at the time and place of flames and a high temperature at the time and place of cold.

上述したとおりの作業機械（ホイールローダ）２の作用について説明する。   The operation of the work machine (wheel loader) 2 as described above will be described.

作業機械２は、太陽電池１８と、太陽電池１８の発電電力によって駆動され運転室１４を換気するファン２０と、太陽電池１８とファン２０との間に逆流防止ダイオード２２を介して接続され、太陽電池１８の発電電力を蓄電する機体の電装品用電源のバッテリー２４を備えている。   The work machine 2 is connected via a backflow prevention diode 22 between the solar cell 18, the fan 20 that is driven by the generated power of the solar cell 18 and ventilates the cab 14, and the solar cell 18 and the fan 20. A battery 24 is provided as a power source for electrical components of the fuselage that stores the generated power of the battery 18.

したがって、作業機械２の休止状態においては、太陽電池１８の発電電力によってファン２０を駆動し運転室１４を換気するので運転室１４の室温の上昇が抑制され、さらに太陽電池１８の発電電力でバッテリー２４の充電を補足するとともにバッテリー２４の電力をファン２０の駆動に用いないので、バッテリー２４の放電を抑制することができる。   Accordingly, when the work machine 2 is in a resting state, the fan 20 is driven by the generated power of the solar cell 18 to ventilate the cab 14, so that an increase in the room temperature of the cab 14 is suppressed. Since the charging of the battery 24 is supplemented and the power of the battery 24 is not used to drive the fan 20, the discharge of the battery 24 can be suppressed.

炎天下において休止中の作業機械２の運転室１４内は、太陽電池１８の発電電力によりファン１８が作動され、床下の冷気が吸込まれ室内の暖気が排出されるので、運転室１４の室温の上昇が抑制される。さらに、作業機械２が休止中であっても、電子制御用コントローラを含む電装品類２６に電力を供給するためのバッテリー２４は太陽電池１８の発電電力によって充電されるので、また逆流防止ダイオード２２によってバッテリー２４の電力はファン２０に流れないので、バッテリー２４の放電が抑制される。   In the cab 14 of the work machine 2 that is not operating under the hot sun, the fan 18 is operated by the generated power of the solar battery 18, the cold air under the floor is sucked in, and the warm air in the room is discharged. Is suppressed. In addition, even when the work machine 2 is at rest, the battery 24 for supplying power to the electrical components 26 including the electronic control controller is charged by the generated power of the solar cell 18, and also by the backflow prevention diode 22. Since the power of the battery 24 does not flow to the fan 20, the discharge of the battery 24 is suppressed.

さらに、太陽電池１８とファン２０の間に、ファン２０への電力を断続する手動スイッチ２８を備えているので、ファン２０の駆動が必要のないような外気温度の低いとき、また空調装置を作動させているなど、のときには、手動スイッチ２８を「断」にし、太陽電池１８の発電電力を全量バッテリー２４の充電に充てることができる。   Further, since a manual switch 28 for intermittently supplying power to the fan 20 is provided between the solar cell 18 and the fan 20, the air conditioner is operated when the outside air temperature is low so that the fan 20 is not required to be driven. In such a case, the manual switch 28 can be turned off, and the generated power of the solar cell 18 can be used for charging the battery 24 in total.

また、手動スイッチ２８とファン２０の間に、運転室１４内の温度を検知し、検知温度が所定の温度を越えたときにはファン２０を作動させ、所定温度以下のときには電力を断って作動を止める自動スイッチ３０を備えたので、手動スイッチ２８が「続」の状態であっても所定の温度においてファン２０の作動を止め、太陽電池１８の発電電力をバッテリー２４に充電することができる。   Further, the temperature in the cab 14 is detected between the manual switch 28 and the fan 20, and when the detected temperature exceeds a predetermined temperature, the fan 20 is operated, and when the detected temperature is lower than the predetermined temperature, the power is turned off to stop the operation. Since the automatic switch 30 is provided, even when the manual switch 28 is in the “continuous” state, the operation of the fan 20 can be stopped at a predetermined temperature, and the power generated by the solar cell 18 can be charged into the battery 24.

以上、本発明を実施例に基づいて詳細に説明したが、本発明は上記の実施例に限定されるものではなく、例えば下記のように、本発明の範囲内においてさまざまな変形あるいは修正ができるものである。   The present invention has been described in detail based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various changes or modifications can be made within the scope of the present invention, for example, as described below. Is.

本実施の発明の形態においては、太陽電池１８とファン２０の間に、手動スイッチ２８と自動スイッチ３０を備えたが、いずれか一方のみを備えてもよい。   In the embodiment of the present invention, the manual switch 28 and the automatic switch 30 are provided between the solar cell 18 and the fan 20, but only one of them may be provided.

本発明に従って構成された作業機械の構成の要部説明図。Explanatory drawing of the principal part of a structure of the working machine comprised according to this invention. 図１に示す構成を備えた作業機械の代表例であるホイールローダの側面図。The side view of the wheel loader which is a typical example of the working machine provided with the structure shown in FIG.

符号の説明Explanation of symbols

２：ホイールローダ（作業機械）
１４：運転室
１８：太陽電池
２０：ファン
２２：逆流防止ダイオード
２４：バッテリー
２８：手動スイッチ
３０：自動スイッチ 2: Wheel loader (work machine)
14: Driver's cab 18: Solar cell 20: Fan 22: Backflow prevention diode 24: Battery 28: Manual switch 30: Automatic switch

Claims (3)

太陽電池と、
この太陽電池の発電電力によって駆動され運転室を換気するファンと、
この太陽電池とファンとの間に逆流防止ダイオードを介して接続され、太陽電池の発電電力が蓄電される、機体の電装品電源用のバッテリーと、
を備えていることを特徴とする作業機械。 Solar cells,
A fan that is driven by the power generated by this solar cell and ventilates the cab;
A battery for electrical component power supply of the fuselage, which is connected between the solar cell and the fan via a backflow prevention diode, and the generated power of the solar cell is stored,
A work machine characterized by comprising: 上記太陽電池とファンの間に、ファンへの電力を断続する手動スイッチを備えている、
ことを特徴とする請求項１記載の作業機械。 Between the solar cell and the fan, a manual switch for interrupting power to the fan is provided.
The work machine according to claim 1, wherein: 上記太陽電池とファンの間に、運転室内の温度を検知し、検知温度が所定の温度を越えたときにはファンを作動させ、所定温度以下のときには電力を断って作動を止める自動スイッチを備えている、
ことを特徴とする請求項１または２記載の作業機械。 An automatic switch is provided between the solar cell and the fan to detect the temperature in the cab and activate the fan when the detected temperature exceeds a predetermined temperature, and turn off the power when the detected temperature is lower than the predetermined temperature. ,
The work machine according to claim 1 or 2, characterized in that.
JP2008003177A 2008-01-10 2008-01-10 Work machine Withdrawn JP2009164529A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011140820A (en) * 2010-01-08 2011-07-21 Nippon Sharyo Seizo Kaisha Ltd Construction machinery
WO2012081620A1 (en) * 2010-12-15 2012-06-21 住友重機械工業株式会社 Shovel
JP2017043888A (en) * 2015-08-24 2017-03-02 株式会社小松製作所 Work vehicle

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011140820A (en) * 2010-01-08 2011-07-21 Nippon Sharyo Seizo Kaisha Ltd Construction machinery
WO2012081620A1 (en) * 2010-12-15 2012-06-21 住友重機械工業株式会社 Shovel
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