JP2002038411A - Screed heater - Google Patents

Screed heater

Info

Publication number
JP2002038411A
JP2002038411A JP2000223971A JP2000223971A JP2002038411A JP 2002038411 A JP2002038411 A JP 2002038411A JP 2000223971 A JP2000223971 A JP 2000223971A JP 2000223971 A JP2000223971 A JP 2000223971A JP 2002038411 A JP2002038411 A JP 2002038411A
Authority
JP
Japan
Prior art keywords
controller
screed
battery
temperature
power
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.)
Granted
Application number
JP2000223971A
Other languages
Japanese (ja)
Other versions
JP3737681B2 (en
Inventor
Nobuyuki Ishii
信行 石井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo SHI Construction Machinery Co Ltd
Original Assignee
Sumitomo SHI Construction Machinery Co Ltd
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 Sumitomo SHI Construction Machinery Co Ltd filed Critical Sumitomo SHI Construction Machinery Co Ltd
Priority to JP2000223971A priority Critical patent/JP3737681B2/en
Publication of JP2002038411A publication Critical patent/JP2002038411A/en
Application granted granted Critical
Publication of JP3737681B2 publication Critical patent/JP3737681B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Road Paving Machines (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent the overheat of a screed device and a harness in an asphalt finisher. SOLUTION: A temperature sensor 1 for detecting the temperature of a screed plate is connected to a controller 2. The battery power source of a fan motor 4 is turned on and off, and a power source relay 3 for switching the input of the power source of the controller to a battery 5 or an alternator 6 is controlled by the controller. In the case that the temperature of the screed plate is a reference value or more, the power source is supplied from the battery to the fan motor and the controller by the control of the controller. Even when an engine is stopped while the screed plate is heated, a wind fan is driven by the battery until the temperature of the screed is lowered to a prescribed value to prevent the overheat of the screed device and the harness.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は、アスファルトフ
ィニッシャに用いられるスクリード加熱装置に関するも
のであり、特に、送風ファンのオンオフ制御機能を設け
たスクリード加熱装置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screed heating apparatus used for an asphalt finisher, and more particularly to a screed heating apparatus provided with a blower fan on / off control function.

【0002】[0002]

【発明が解決しようとする課題】アスファルトフィニッ
シャのスクリード加熱装置は、送風ファンにより熱風を
送ってスクリードプレートを加熱するように構成されて
いるが、スクリードプレートを加熱中にエンジンキーを
オフ位置へ回すと、電源回路がオフしてエンジンが停止
するとともに送風ファンが停止し、スクリード装置の温
度が急激に上昇してスクリード装置の各部やハーネスが
損傷するおそれがある。
The screed heating apparatus of the asphalt finisher is configured to heat the screed plate by sending hot air by a blower fan, but turns the engine key to the off position while heating the screed plate. In such a case, the power supply circuit is turned off, the engine stops, the blower fan stops, and the temperature of the screed device rapidly rises, which may damage each part of the screed device and the harness.

【0003】そこで、スクリードプレートを加熱中に誤
ってエンジンを停止させたとしても、スクリード装置の
温度の上昇を抑制して、スクリード装置やハーネスの損
傷を防止するために解決すべき技術的課題が生じてくる
のであり、本発明は上記課題を解決することを目的とす
る。
Therefore, even if the engine is stopped by mistake while the screed plate is being heated, there is a technical problem to be solved in order to suppress a rise in the temperature of the screed device and to prevent damage to the screed device and the harness. The present invention aims to solve the above problems.

【0004】[0004]

【課題を解決するための手段】この発明は、上記目的を
達成するために提案するものであり、熱源が発生する熱
気を送風ファンによりスクリードプレートへ送風してス
クリードプレートを加熱するスクリード加熱装置におい
て、スクリードプレートの温度を検出する温度センサ
と、ファンモータのバッテリー電源をオンオフするとと
もにコントローラの電源入力をバッテリーまたはオルタ
ネータに択一的に切換える電源リレーと、温度センサの
検出値と基準値とを比較してその比較結果に応じて電源
リレーを制御するコントローラとを備え、コントローラ
の制御により、温度センサの検出値が基準値未満の場合
はファンモータのバッテリー電源がオフし、且つコント
ローラの電源入力がオルタネータに切換わり、温度セン
サの検出値が基準値以上の場合はファンモータのバッテ
リー電源がオンし、且つ、コントローラの電源入力がバ
ッテリーに切換わるように構成したスクリード加熱装置
を提供するものである。
SUMMARY OF THE INVENTION The present invention provides a screed heating apparatus for heating a screed plate by blowing hot air generated by a heat source to a screed plate by a blower fan. , A temperature sensor that detects the temperature of the screed plate, a power relay that turns on and off the battery power of the fan motor and switches the power input of the controller to the battery or alternator, and compares the detected value of the temperature sensor with the reference value And a controller that controls a power relay according to the comparison result. When the detected value of the temperature sensor is less than the reference value, the controller turns off the battery power of the fan motor and turns off the power input of the controller. Switch to the alternator, and the detected value of the temperature sensor becomes the reference value ON battery power of the fan motor is the case of the above, and is intended to provide a screed heater power input of the controller is configured to switched battery.

【0005】[0005]

【発明の実施の形態】以下、この発明の実施の一形態を
図に従って詳述する。図1はスクリード加熱装置の送風
ファンの制御回路を示し、1は温度センサ、2はコントロ
ーラであり、温度センサ1の出力に応じてコントローラ2
が電源リレー3を制御してファンモータ4をオンオフす
る。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a control circuit of a blower fan of a screed heating apparatus, 1 is a temperature sensor, 2 is a controller, and a controller 2 is provided in accordance with an output of the temperature sensor 1.
Controls the power relay 3 to turn the fan motor 4 on and off.

【0006】温度センサ1は、アスファルトフィニッシ
ャのスクリードプレートに取付けるか、或はスクリード
プレートの近傍に配置し、スクリードプレートの温度に
応じた電圧信号S1をコントローラ2へ出力する。
The temperature sensor 1 is attached to the screed plate of the asphalt finisher or is disposed near the screed plate, and outputs a voltage signal S1 corresponding to the temperature of the screed plate to the controller 2.

【0007】コントローラ2の電源入力端子は、電源リ
レー3のNO接点Ra1を介してバッテリー5へ接続するとと
もに、リレー3のNC接点Rbを介してオルタネータ6のDC出
力回路へ接続している。ファンモータ4は、電源リレー3
のNO接点Ra2を介してコントローラ2の電源出力端子へ接
続している。
The power input terminal of the controller 2 is connected to the battery 5 via the NO contact Ra1 of the power relay 3 and to the DC output circuit of the alternator 6 via the NC contact Rb of the relay 3. Fan motor 4 is power relay 3
Is connected to the power output terminal of the controller 2 via the NO contact Ra2.

【0008】図示は省略するが、通常のエンジン駆動形
車両と同様にバッテリー5の+極はオルタネータ6のDC出
力回路へ接続されていて、エンジン回転時にオルタネー
タ6は電気回路全体に給電するとともにバッテリー5へ充
電電流を供給する。
Although not shown, the positive pole of the battery 5 is connected to the DC output circuit of the alternator 6 as in a normal engine-driven vehicle, and the alternator 6 supplies power to the entire electric circuit and rotates the battery when the engine rotates. Supply charging current to 5.

【0009】図2はコントローラ2の送風ファン制御回
路を示し、コンパレータ11は、温度センサ1の出力電圧S
1と基準電圧Vrefとの比較結果に応じてトランジスタ12
を制御して、リレー制御信号S2をオンオフする。基準電
圧Vrefは、スクリードプレートの送風停止許容温度θ
0(°C)における温度センサ1の出力電圧S1(θ0)と等し
い値か、或は若干低い値に設定する(Vref≦S1(θ0))
FIG. 2 shows a blower fan control circuit of the controller 2, and a comparator 11 outputs an output voltage S of the temperature sensor 1.
1 and the reference voltage Vref.
To turn on and off the relay control signal S2. The reference voltage V ref is the allowable temperature θ
Set to a value equal to or slightly lower than the output voltage S1 (θ 0 ) of the temperature sensor 1 at 0 (° C) (V ref ≦ S1 (θ 0 )) .

【0010】次に送風ファン制御回路の動作を説明す
る。エンジン始動時にはスクリードプレートの温度が低
く、温度センサ1の出力電圧S1はS1<Vrefであるので、
コンパレータ11の出力はLoでトランジスタ12はオフして
おり、電源リレー3の電磁コイルは通電されず、図1に
示すようにNO接点Ra1と NO接点Ra2は開き、NC接点Rbは
閉じていて、オルタネータ6からコントローラ2へ電源が
供給される。
Next, the operation of the blower fan control circuit will be described. When the engine is started, the temperature of the screed plate is low, and the output voltage S1 of the temperature sensor 1 is S1 <Vref.
The output of the comparator 11 is Lo and the transistor 12 is off, the electromagnetic coil of the power supply relay 3 is not energized, and the NO contacts Ra1 and Ra2 are open and the NC contact Rb is closed as shown in FIG. Power is supplied from the alternator 6 to the controller 2.

【0011】スクリードプレートの温度がθ0(°C)以
上に上昇すると、温度センサ1の出力電圧S1が基準電圧V
refを超えてコンパレータ11の出力がHiに切換わり、ト
ランジスタ12がオンして電源リレー3の電磁コイルが励
磁される。これにより、NO接点Ra1と NO接点Ra2が閉じ
てNC接点Rbが開き、電源はオルタネータ6からバッテリ
ー5に切換わり、バッテリー5からNO接点Ra1、コントロ
ーラ2及びNO接点Ra2を通じてファンモータ4へ通電さ
れ、送風ファンがスクリードプレートへ熱風を送る。こ
のときバッテリー5はオルタネータ6により充電されてい
るので、バッテリーがあがることはない。
When the temperature of the screed plate rises to θ 0 (° C.) or more, the output voltage S 1 of the temperature sensor 1 becomes the reference voltage V
Exceeding ref, the output of the comparator 11 is switched to Hi, the transistor 12 is turned on, and the electromagnetic coil of the power supply relay 3 is excited. As a result, the NO contact Ra1 and the NO contact Ra2 are closed and the NC contact Rb is opened, the power is switched from the alternator 6 to the battery 5, and the battery 5 is energized to the fan motor 4 through the NO contact Ra1, the controller 2 and the NO contact Ra2. Then, the blowing fan sends hot air to the screed plate. At this time, since the battery 5 is charged by the alternator 6, the battery does not rise.

【0012】送風ファンが回転中にエンジンキーをオフ
位置へ回してエンジンを停止した場合も、バッテリー5
からコントローラ2へ電源が供給されていて、温度セン
サ1の出力電圧S1>Vrefによりコンパレータ11の出力(H
i)並びに電源リレー3の状態(on)は変化せず、ファンモ
ータ4は回転を継続して、スクリードプレートの温度の
上昇を抑制する。
If the engine is turned off by turning the engine key to the off position while the blower fan is rotating, the battery 5
Is supplied to the controller 2 from the controller 11, and the output of the comparator 11 (H
i) and the state (on) of the power supply relay 3 do not change, and the fan motor 4 continues to rotate to suppress a rise in the temperature of the screed plate.

【0013】スクリードプレートが送風ファンの風によ
り冷却されて温度がθ0(°C)以下に低下し、温度セン
サ1の出力電圧S1が基準電圧Vref以下に低下すると、コ
ンパレータ11の出力がLoに反転し、トランジスタ12がオ
フして電源リレー3への励磁電流が停止する。これによ
り、図1に示すようにNO接点Ra1と NO接点Ra2が開いてN
C接点Rbが閉じ、バッテリー5とコントローラ2とが遮断
されてファンモータ4は停止する。このように、スクリ
ードプレートの温度がθ0(°C)以下になったときは、
バッテリー5とコントローラ2とが切り離されるので、不
必要にバッテリー5の電力を消費することがない。
When the temperature of the screed plate is cooled by θ 0 (° C.) or less and the output voltage S1 of the temperature sensor 1 falls below the reference voltage Vref, the output of the comparator 11 becomes Lo. The transistor 12 is turned off, and the exciting current to the power supply relay 3 stops. As a result, the NO contact Ra1 and the NO contact Ra2 open as shown in FIG.
The C contact Rb is closed, the battery 5 and the controller 2 are cut off, and the fan motor 4 stops. Thus, when the temperature of the screed plate falls below θ 0 (° C),
Since the battery 5 and the controller 2 are separated, the power of the battery 5 is not unnecessarily consumed.

【0014】尚、この発明は上記の実施形態に限定する
ものではなく、この発明の技術的範囲内において種々の
改変が可能であり、この発明がそれらの改変されたもの
に及ぶことは当然である。
It should be noted that the present invention is not limited to the above-described embodiment, and various modifications are possible within the technical scope of the present invention, and it goes without saying that the present invention extends to those modifications. is there.

【0015】[0015]

【発明の効果】以上説明したように、本発明のスクリー
ド加熱装置は、スクリードを加熱中にエンジンを停止し
たとしても、スクリードの温度が所定値に低下するまで
送風ファンが回転してスクリードの過熱を抑制するの
で、過熱によるスクリード装置やハーネスの損傷を未然
に防止できる。
As described above, in the screed heating apparatus according to the present invention, even if the engine is stopped while the screed is being heated, the blowing fan rotates until the screed temperature drops to a predetermined value, and the screed is overheated. Therefore, damage to the screed device and the harness due to overheating can be prevented.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施の一形態を示し、スクリード加熱
装置の送風ファン制御回路の回路図である。
FIG. 1 shows an embodiment of the present invention and is a circuit diagram of a blower fan control circuit of a screed heating device.

【図2】送風ファン制御回路のコントローラの回路図で
ある。
FIG. 2 is a circuit diagram of a controller of the blower fan control circuit.

【符号の説明】[Explanation of symbols]

1 温度センサ 2 コントローラ 3 電源リレー 4 ファンモータ 5 バッテリー 6 オルタネータ 1 Temperature sensor 2 Controller 3 Power relay 4 Fan motor 5 Battery 6 Alternator

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 熱源が発生する熱気を送風ファンにより
スクリードプレートへ送風してスクリードプレートを加
熱するスクリード加熱装置において、スクリードプレー
トの温度を検出する温度センサと、ファンモータのバッ
テリー電源をオンオフするとともにコントローラの電源
入力をバッテリーまたはオルタネータに択一的に切換え
る電源リレーと、温度センサの検出値と基準値とを比較
してその比較結果に応じて電源リレーを制御するコント
ローラとを備え、コントローラの制御により、温度セン
サの検出値が基準値未満の場合はファンモータのバッテ
リー電源がオフし、且つコントローラの電源入力がオル
タネータに切換わり、温度センサの検出値が基準値以上
の場合はファンモータのバッテリー電源がオンし、且
つ、コントローラの電源入力がバッテリーに切換わるよ
うに構成したスクリード加熱装置。
1. A screed heating apparatus for heating a screed plate by blowing hot air generated by a heat source to a screed plate by a blower fan, wherein a temperature sensor for detecting a temperature of the screed plate and a battery power supply for a fan motor are turned on and off. A controller for switching the power input of the controller between a battery and an alternator; and a controller for comparing a detected value of the temperature sensor with a reference value and controlling the power relay according to a result of the comparison. Therefore, if the detected value of the temperature sensor is less than the reference value, the battery power of the fan motor is turned off, and the power input of the controller is switched to the alternator. When the power is turned on and the controller A screed heating device configured to switch the source input to a battery.
JP2000223971A 2000-07-25 2000-07-25 Screed heating equipment Expired - Fee Related JP3737681B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000223971A JP3737681B2 (en) 2000-07-25 2000-07-25 Screed heating equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000223971A JP3737681B2 (en) 2000-07-25 2000-07-25 Screed heating equipment

Publications (2)

Publication Number Publication Date
JP2002038411A true JP2002038411A (en) 2002-02-06
JP3737681B2 JP3737681B2 (en) 2006-01-18

Family

ID=18718002

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000223971A Expired - Fee Related JP3737681B2 (en) 2000-07-25 2000-07-25 Screed heating equipment

Country Status (1)

Country Link
JP (1) JP3737681B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2281947A1 (en) * 2009-06-26 2011-02-09 Joseph Vögele AG Road finisher with automatic motor control
JP2013517405A (en) * 2009-12-17 2013-05-16 ドイツ アクチェンゲゼルシャフト Mobile work machine with integrated starter generator
JP2013253468A (en) * 2012-06-05 2013-12-19 Joseph Voegele Ag Road surface finishing machine and method of spreading admixture by the same
EP2333158B2 (en) 2009-11-30 2017-12-06 Joseph Vögele AG Road finisher

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2281947A1 (en) * 2009-06-26 2011-02-09 Joseph Vögele AG Road finisher with automatic motor control
EP2333158B2 (en) 2009-11-30 2017-12-06 Joseph Vögele AG Road finisher
JP2013517405A (en) * 2009-12-17 2013-05-16 ドイツ アクチェンゲゼルシャフト Mobile work machine with integrated starter generator
JP2013253468A (en) * 2012-06-05 2013-12-19 Joseph Voegele Ag Road surface finishing machine and method of spreading admixture by the same

Also Published As

Publication number Publication date
JP3737681B2 (en) 2006-01-18

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