JPS5926652A - Method for selecting tension of belt used in power transmitting system - Google Patents
Method for selecting tension of belt used in power transmitting systemInfo
- Publication number
- JPS5926652A JPS5926652A JP57136119A JP13611982A JPS5926652A JP S5926652 A JPS5926652 A JP S5926652A JP 57136119 A JP57136119 A JP 57136119A JP 13611982 A JP13611982 A JP 13611982A JP S5926652 A JPS5926652 A JP S5926652A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- tension
- shaft
- strain gauge
- amplifier
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0876—Control or adjustment of actuators
- F16H2007/088—Manual adjustment
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
Description
【発明の詳細な説明】
技術分野
本発明は動力伝達系におけるベルトの張力設定方法に関
するものである。TECHNICAL FIELD The present invention relates to a method for setting belt tension in a power transmission system.
従来技術
動力伝達系におけるベルトに張力を付与する方法として
は例えば第１〜３図に示すような方法がある。第１図に
おいては、軸１を中心にして同図の矢印方向に所定の力
でけ勢される押圧部材２がベルト３自身に押目″けられ
ることによって張力Ｎ゛与がなされ、第２図においては
、一方のプーリ４を回転可能に支持する支持台５に挿通
されたボルト６を固定部７に螺入することにより軸８を
中心にして支持台５が同図の矢印方向に回動されて張力
は与がなされ、又、第３図においては、一方のプーリ４
を回転可能に支持する支持台９と固定部７とを連結する
ボルト６及びナツト１０の締結を強めることにより支持
台９が同図の矢印方向に移動されて張力付与がなされる
。As a method of applying tension to a belt in a conventional power transmission system, there are methods shown in FIGS. 1 to 3, for example. In FIG. 1, a tension force N is applied by pressing the belt 3 itself with the pressing member 2, which is urged with a predetermined force in the direction of the arrow in the figure with the axis 1 as the center, and as shown in FIG. , the support base 5 rotates about the shaft 8 in the direction of the arrow in the figure by screwing into the fixed part 7 a bolt 6 inserted through the support base 5 that rotatably supports one of the pulleys 4. In addition, in FIG. 3, one of the pulleys 4
By tightening the bolts 6 and nuts 10 that connect the support base 9 that rotatably supports the fixing portion 7, the support base 9 is moved in the direction of the arrow in the figure and tension is applied.
このように、ベルトに張力を付与する方法は種々あるが
、ベルトに所定の張力が付与されたかどうかを調べる方
法としては専ら人の勘に頼っていた。すなわち、ベルト
を指にて押圧したときの触感によって張力の大きさを判
断していた。しかし、このような張力測定方法はあいま
いなものであり、ベルト３に所定の張力をけ与すること
が難しい。As described above, although there are various methods for applying tension to the belt, the method of checking whether a predetermined tension has been applied to the belt has relied exclusively on human intuition. That is, the magnitude of the tension was determined based on the tactile sensation when the belt was pressed with a finger. However, such a tension measuring method is vague, and it is difficult to apply a predetermined tension to the belt 3.
そこで、第４図に示すように、張力計１１を用いて張力
測定を行い、ベルトに所定の張力を付与する方法も行わ
れている。しかし、油、湿気等の吸収によって膨潤を起
こし、そのため強度圓下し７たベルｌ−１あるいは脆性
の始捷ったベルト等、いわゆる物性の変化したベルトに
所定の押圧力を加えたときのたわみ量が正常なベルトに
おけるたわみ量と異なってくるため、前記張力計を用い
た場合にも測定誤差が生ずるという欠陥があった。Therefore, as shown in FIG. 4, a method is also used in which tension is measured using a tension meter 11 to apply a predetermined tension to the belt. However, when a predetermined pressing force is applied to belts whose physical properties have changed, such as belts that have swelled due to absorption of oil, moisture, etc., and have lost their strength, Since the amount of deflection differs from the amount of deflection in a normal belt, there is a problem in that a measurement error occurs even when the tension meter is used.
前記した従来の張力測定を行いながらベルトｌ’ｉｃ張
力を付与した場合には、ベルｌ−Ｋ張力をかけ過ぎてし
捷い、ヘルドが切れたりベルトを掛装したプーリの支持
シャフトがたわんだり、あるいは同ンヤフトが折れたり
するという問題があった。例えは、第５図に示すように
、織機のクランク軸１２に固着されたプーリ１３とモー
タ（図示略）との間に掛装されたクランク軸１２駆動用
Ｖベルト１４に所定の張力が与えられていない場合には
、■ベルト１４の駆動に伴ってクランク軸１２が回転し
ながら振動現象を起こし、同軸１２が折れてし捷うとい
うおそれがあった。If belt l'ic tension is applied while performing the conventional tension measurement described above, excessive belt l'ic tension may be applied and the belt may break, causing the heald to break or the support shaft of the pulley on which the belt is hung to be bent. There was a problem that the same Yaft might break. For example, as shown in FIG. 5, a predetermined tension is applied to a V-belt 14 for driving the crankshaft 12, which is suspended between a pulley 13 fixed to the crankshaft 12 of a loom and a motor (not shown). If this is not done, there is a risk that the crankshaft 12 will vibrate as it rotates as the belt 14 is driven, and the coaxial shaft 12 will break and become loose.
目的
本発明は前記欠陥を解消するためになされたものであっ
て、その目的は動力伝達系のベルトに加えら牡だ張力に
よる機械的部分の変位を電気的信号に変換可能な歪計に
よって測定することにより、人の勘に頼らず、又、ベル
トの物性変化に関係なく、変換された電気的信号に基づ
いてベル）Ｋ所定の張力を例力することができる動力伝
達系におけるベルトの張力設定方法を提供することにあ
る。Purpose The present invention has been made to eliminate the above-mentioned defects, and its purpose is to measure the displacement of mechanical parts due to tension applied to the belt of the power transmission system using a strain meter that can convert into an electrical signal. By doing so, the belt tension in the power transmission system can be determined based on the converted electrical signal without relying on human intuition or regardless of changes in the physical properties of the belt. The purpose is to provide a setting method.
実施例
以下、本発明を具体化した一実施例を第６図に紙づいて
説明する。EXAMPLE Hereinafter, an example embodying the present invention will be described with reference to FIG. 6.
ベルｌ−３を掛装したプーリ４を支持するシャフト１５
には薄片状の合成樹脂内に鋳込捷れた金属細線からなる
電気的歪計１６が貼着されている。Shaft 15 supporting pulley 4 on which bell l-3 is hung
An electric strain gauge 16 made of a thin metal wire cast into a thin piece of synthetic resin is attached to the plate.
同歪計１６はベルト３に張力を力えたときに伸び変位す
る部分（すなわち、図示しない他方のプーリと反対側の
部分）に貼着されている。前記金属細線はベルト３に加
えられた張力に対応して変位するシャフト１５とともに
伸縮し、その電気抵抗が変化する。本実施例においては
、前記金属細線はベルト３に張力を与えたときに伸び変
形するようになっているので、ベルト張力の増加ととも
に電気抵抗も増大する。そして、同金属細線の電気抵抗
（すなわち、ベルト張力）に対応する電気的信号（例え
ば電圧）が増幅器１７によって増幅される（なぜなら、
金属細線の電気抵抗は温度によって影響を受けるため、
同金属細線を流れる電流は極力小さくしであるからであ
る）。増幅された電気的信号の値がベルト３の適正張力
（一般て、これはある許容範囲をもっている）に対応す
る設定範囲内にあれば、ベルト３には適正張力が付与さ
れていることが判断できる。The strain gauge 16 is attached to a portion of the belt 3 that expands and displaces when tension is applied (that is, a portion opposite to the other pulley (not shown)). The thin metal wire expands and contracts along with the shaft 15, which is displaced in response to the tension applied to the belt 3, and its electrical resistance changes. In this embodiment, the thin metal wire is designed to stretch and deform when tension is applied to the belt 3, so that as the belt tension increases, the electrical resistance also increases. Then, an electrical signal (for example, voltage) corresponding to the electrical resistance of the thin metal wire (that is, belt tension) is amplified by the amplifier 17 (because
Since the electrical resistance of thin metal wire is affected by temperature,
This is because the current flowing through the same metal wire should be as small as possible.) If the value of the amplified electrical signal is within a set range corresponding to the proper tension of the belt 3 (which generally has a certain tolerance range), it is determined that the belt 3 has the proper tension. can.
なお、シャフト１５の変位がフックの法則（弾性域内の
変位は与えられた力に比例する）に従っている限りにお
いては、前記金属細線の電気抵抗はベルト３の張力にほ
ぼ正比例して変位するが、シャフト１５の変位が弾性域
を越えてし甘うと電気抵抗はベルト張力に比例しなくな
り、従って、弾性域外ではベルト張力に電気抵抗を対応
づけることが困難となる。又、シャフト１５の変位が弾
性域を越えると、同シャフト１５がたわんだまま元の状
態に戻らなかったり、あるいは折れてし１つたりする。Note that as long as the displacement of the shaft 15 follows Hooke's law (displacement within the elastic range is proportional to the applied force), the electrical resistance of the thin metal wire will be displaced approximately in direct proportion to the tension of the belt 3; If the displacement of the shaft 15 exceeds the elastic range, the electrical resistance will no longer be proportional to the belt tension, and therefore, outside the elastic range, it will be difficult to correlate the electrical resistance with the belt tension. Furthermore, if the displacement of the shaft 15 exceeds the elastic range, the shaft 15 may remain bent and not return to its original state, or may break.
そのため、ベルト３の適正張力はシャフト１５の弾性域
内に設定しておく必要がある。Therefore, the appropriate tension of the belt 3 must be set within the elastic range of the shaft 15.
の低い方の端を示す信号値以上の電気的信号が入力すれ
ば青ランプが点灯し、高い方の端を示す信号値以上の電
気的信号が入力すれば赤ランプが点灯するようになって
いる）に増幅器１ｋを接続すれば、青ランプが点灯する
壕でベルト３の張力を徐々に上昇させてゆくだけでベル
ト３の張力を適正張力捷で極めて容易に、かつ確実に到
達させることができる。さらに、ベルト３の張力を高め
てゆけば適正張力範囲を越え、赤ランプが点灯すること
になるが、赤ランプが点灯する＠にベルト３の張力設定
を押えれば、ヘルド３及びシャフト１５に過負荷が加わ
ることはない。If an electrical signal greater than the signal value indicating the lower end of the signal is input, the blue lamp lights up, and if an electrical signal greater than the signal value indicating the high end is input, the red lamp lights up. If the amplifier 1k is connected to the amplifier 1k, the tension of the belt 3 can be reached extremely easily and reliably by adjusting the appropriate tension simply by gradually increasing the tension of the belt 3 in the trench where the blue lamp lights. can. Furthermore, if the tension of the belt 3 is increased, it will exceed the appropriate tension range and the red lamp will light up, but if the tension setting of the belt 3 is held down until the red lamp lights up, the heald 3 and shaft 15 will be No overload is applied.
又、第６図に示すように、増幅器１７をモータ（図示略
）の制御部１８に接続し、ベルト３の張力が適正範囲か
ら外れた場合には前記モータを停止させるようにすれば
、過大張力によるベルト３切れ、あるいは７ヤフト１５
折れといった問題を未然に防ぐことができる。Further, as shown in FIG. 6, if the amplifier 17 is connected to the control section 18 of a motor (not shown) and the motor is stopped when the tension of the belt 3 is out of the appropriate range, it is possible to prevent excessive tension. 3 belt breaks due to tension or 7 yafts 15
Problems such as breakage can be prevented.
又、このようなベルト張力設定方法においては、ベルト
の物性変化に関係なく、張力設定を適正に行うことがで
きる。Moreover, in such a belt tension setting method, the tension can be set appropriately regardless of changes in the physical properties of the belt.
なお、前記電気的歪計１６は第６図に示すシャフト１５
における貼着部分とは反対側の部分に貼着してもよい（
この場合、前記金属細線の抵抗はベルト３の張力が大き
くなれば逆に小さくなるというよう［ｆＣ１前記実施例
とは逆の変化を示す）。Note that the electric strain meter 16 has a shaft 15 shown in FIG.
It may be pasted on the opposite side of the pasted part (
In this case, the resistance of the thin metal wire decreases as the tension of the belt 3 increases [fC1 shows a change opposite to that of the previous embodiment].
又、電気的歪計１６の最適の貼着部分は動力伝達系の構
成の違いによっても変わってくるものであり、例えば第
７図に示すように、モータ１９が支持ブラケット２０に
よって支持されているような場合には同ブラケット２０
の変位部に電気的正割１６を貼着したり、第８図（前述
した第２図と同じ構成である）の場合には支持台５の変
位部て電気的歪計１６を貼着したり、あるいは第９図（
前述した第３図と同じ構成である）の場合にはボルト６
に電気的歪計１６を貼着すればよい。Furthermore, the optimal attachment point for the electric strain gauge 16 varies depending on the configuration of the power transmission system. For example, as shown in FIG. 7, the motor 19 is supported by a support bracket 20. In such cases, use the same bracket 20
An electrical secant 16 is attached to the displaced portion of the support base 5, or in the case of FIG. 8 (which has the same configuration as the above-mentioned FIG. or Figure 9 (
If the configuration is the same as that shown in Figure 3 above, bolt 6
The electric strain meter 16 may be attached to the.
以上詳述したように、本発明は動力伝達系のベルトに加
えられた張力による機械的部分の変位を電気的信号に変
換可能な歪計によって測定したことにより、人の勘に頼
らず、又、ベルトの物性変化に関係なく、変換された電
気的信号に基づいてベルトに所定の張力を付与すること
ができる効果を有するので、動力伝達系におけるベルト
の張力設定方法として産業利用上優れた発明である。As described in detail above, the present invention measures the displacement of mechanical parts due to the tension applied to the belt of the power transmission system using a strain meter that can convert into an electrical signal, thereby eliminating the need to rely on human intuition. This invention has the effect of being able to apply a predetermined tension to the belt based on the converted electrical signal, regardless of changes in the physical properties of the belt, and is therefore an excellent invention for industrial use as a method for setting belt tension in a power transmission system. It is.
第１〜３図はそれぞれベル）Ｋ張力を付与する方法を示
す略体側面図、第４図は従来のベルトの張力測定方法を
示す略体側面図、第５図は織機のクランク軸付近を示す
路体平面図、第６図は本発明を具体化した一実施例を示
す縦断面図、第７〜９図はそれぞれ別例を示す略体図で
ある。Figures 1 to 3 are schematic side views showing a method for applying belt tension, Figure 4 is a schematic side view showing a conventional method for measuring belt tension, and Figure 5 shows the vicinity of the crankshaft of a loom. FIG. 6 is a longitudinal sectional view showing one embodiment of the present invention, and FIGS. 7 to 9 are schematic diagrams showing other examples.
Claims (1)
部分の変位を電気的信号に変換可能な歪計により測定し
、変換された電気的信号Ｖｒｃ基づいて前記ベルトの張
力を設定することを特徴とする動力伝達系におけるベル
トの張力設定方法。1. Displacement of a mechanical part due to a load applied to a belt of a power transmission system is measured by a strain meter that can be converted into an electrical signal, and the tension of the belt is set based on the converted electrical signal Vrc. How to set belt tension in a power transmission system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57136119A JPS5926652A (en) | 1982-08-03 | 1982-08-03 | Method for selecting tension of belt used in power transmitting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57136119A JPS5926652A (en) | 1982-08-03 | 1982-08-03 | Method for selecting tension of belt used in power transmitting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5926652A true JPS5926652A (en) | 1984-02-10 |
Family
ID=15167743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57136119A Pending JPS5926652A (en) | 1982-08-03 | 1982-08-03 | Method for selecting tension of belt used in power transmitting system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5926652A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013071536A (en) * | 2011-09-27 | 2013-04-22 | Hitachi Automotive Systems Ltd | Electric booster device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55134332A (en) * | 1979-03-30 | 1980-10-20 | Cleveland Machine Controls | Web tension measuring apparatus |
-
1982
- 1982-08-03 JP JP57136119A patent/JPS5926652A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55134332A (en) * | 1979-03-30 | 1980-10-20 | Cleveland Machine Controls | Web tension measuring apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013071536A (en) * | 2011-09-27 | 2013-04-22 | Hitachi Automotive Systems Ltd | Electric booster device |
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