JPH0381633A - Method and device for vibration measurement - Google Patents
Method and device for vibration measurementInfo
- Publication number
- JPH0381633A JPH0381633A JP1216072A JP21607289A JPH0381633A JP H0381633 A JPH0381633 A JP H0381633A JP 1216072 A JP1216072 A JP 1216072A JP 21607289 A JP21607289 A JP 21607289A JP H0381633 A JPH0381633 A JP H0381633A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- measured
- vibration
- tension
- sensor
- 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
Links
- 238000000034 method Methods 0.000 title claims description 7
- 238000005259 measurement Methods 0.000 title claims description 6
- 210000000078 claw Anatomy 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 6
- 230000001133 acceleration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、例えば自動車用エンジンの駆動に用いられる
歯付ベルト等の張力を得るために、その振動を測定する
方法およびその装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and an apparatus for measuring the vibrations of a toothed belt used, for example, in order to obtain the tension of a toothed belt used to drive an automobile engine.
従来、歯付ベルト等に作用する張力を測定する方法とし
て、ベルトに横振動を与え、その周波数を測定すること
により張力を検知するものが知られている。すなわち、
振動数と張力とは一定の関係があり、ベルトの単位長さ
当りの重量およびスパン（ベルトが巻回される２つのプ
ーリ間の距離）が分かっていれば張力が求められる。Conventionally, as a method for measuring tension acting on a toothed belt or the like, a method is known in which the tension is detected by applying transverse vibration to the belt and measuring the frequency of the vibration. That is,
There is a certain relationship between vibration frequency and tension, and if the weight per unit length of the belt and the span (the distance between the two pulleys around which the belt is wound) are known, the tension can be determined.
〔発明が解決しようとする課題］
ベルトの振動数は、ベルトのスパンが長くなるほど低く
なるが、通常振動数を検出するセンサの測定範囲には限
界があり、ベルトのスパンが一定長さ以上になると、振
動数の検出精度が極端に低下し、張力の測定が不可能に
なる。[Problem to be Solved by the Invention] The frequency of vibration of a belt decreases as the span of the belt becomes longer, but there is a limit to the measurement range of a sensor that normally detects the frequency. In this case, the frequency detection accuracy is extremely reduced, making it impossible to measure tension.
本発明は、このような問題点に鑑み、スパンの長いベル
トであっても、高精度で張力を検知することを可能にし
、しかも簡便かつ迅速に実施できる振動測定方法および
その装置を得ることを目的としてなされたものである。In view of these problems, it is an object of the present invention to provide a vibration measuring method and apparatus that can detect tension with high precision even in long-span belts, and that can be carried out simply and quickly. It was done for a purpose.
本発明に係る振動測定方法は、被測定ベルトの２点を挟
持して所定長さの被測定部分を形成し、その被測定部分
を叩いて振動を発生させるとともにその振動の周波数を
検出することを特徴としている。The vibration measurement method according to the present invention includes sandwiching two points of a belt to be measured to form a part to be measured of a predetermined length, and striking the part to be measured to generate vibration and detecting the frequency of the vibration. It is characterized by
また本発明に係る振動測定装置は、上記振動測定方法の
実施に直接使用されるものであり、被測定ベルトの２点
を挟持して所定長さの被測定部を形成する挟持機構と、
その被測定部を叩いて振動を発生させる手段と、上記振
動の周波数を検出するセンサとを備えたことを特徴とし
ている。Further, the vibration measuring device according to the present invention is used directly to carry out the above-mentioned vibration measuring method, and includes a clamping mechanism that clamps two points of the belt to be measured to form a portion to be measured of a predetermined length;
It is characterized by comprising means for generating vibrations by hitting the part to be measured, and a sensor for detecting the frequency of the vibrations.
［作用］
被測定部分が叩かれ、この被測定部分に振動が発生する
。被測定部分は所定の長さを有するので、ベルト自体の
長さに関係なく、常に測定可能な振動数が得られ、これ
によりベルトの張力が検出される。[Function] The part to be measured is struck, and vibrations are generated in this part to be measured. Since the part to be measured has a predetermined length, regardless of the length of the belt itself, a measurable frequency is always obtained, and the tension of the belt can thereby be detected.
〔実施例］ 以下図示実施例により本発明を説明する。〔Example] The present invention will be explained below with reference to illustrated embodiments.
第１図は本発明の一実施例装置の使用状態を概略的に示
すものである。この図において、一対のプーリ１１．１
２には無端状のタイ４ングベルト１３が巻回されている
。本実施例の測定装置２０は後述するように、タイミン
グベルト１３の２点を挟持して所定長さの被測定部を形
成し、この被測定部を叩いて振動を発生させ、この振動
の周波数に基づいてタイミングベルト１３の張力を検出
するように、構成されている。FIG. 1 schematically shows how an apparatus according to an embodiment of the present invention is used. In this figure, a pair of pulleys 11.1
An endless tie belt 13 is wound around 2. As will be described later, in the measuring device 20 of this embodiment, the timing belt 13 is held at two points to form a part to be measured of a predetermined length, the part to be measured is struck to generate vibration, and the frequency of this vibration is The tension of the timing belt 13 is detected based on the timing.
第２図および第３図は、測定装置２０の構成を示す。2 and 3 show the configuration of the measuring device 20. FIG.
下側枠部材２１はコ字形を有し、その中央部には外方に
延びるグリップ２２が設けられる。上側枠部材２３は下
側枠部材２１の形状に対応したコ字形を有し、グリップ
２２の上方に延びるグリップ２４が形成される。下側枠
部材２１の２つの先端部は、グリップ２２に平行に延び
、上部には爪２１ａが形成される。上側枠部材２３の２
つの先端部も同様に、グリップ２４に平行に延び、下部
には爪２２ａが形成される。下側枠部材２１と上側枠部
材２３は、ピン２５により相互に連結され、またこの連
結部分には図示しない復元ばねが設けられる。The lower frame member 21 has a U-shape, and a grip 22 extending outward is provided at the center thereof. The upper frame member 23 has a U-shape corresponding to the shape of the lower frame member 21, and a grip 24 extending above the grip 22 is formed. The two tips of the lower frame member 21 extend parallel to the grip 22, and claws 21a are formed at the top. Upper frame member 23-2
Similarly, the two tip portions extend parallel to the grip 24, and a claw 22a is formed at the bottom thereof. The lower frame member 21 and the upper frame member 23 are connected to each other by a pin 25, and a restoring spring (not shown) is provided at this connection portion.
グリップ２２．２４を握ってグリップ２４をグリップ２
２に近接させることにより、上側枠部材２３の先端が上
方へ回動し、上側枠部材２３と下側枠部材２１が開放す
る。この状態で、上側枠部材２３と下側枠部材２１の間
に、被測定物であるベルト１３を挿入しく第２図）、グ
リップ２４を放すと、復元ばねの弾発力により上側枠部
材２３が下方へ復元し、上側枠部材２３と下側枠部材２
１が閉じてベルト１３が爪２１ａ、２２ａにより挟持さ
れる（第３図）。Grip 22. Grip 24 and grip 24
2, the tip of the upper frame member 23 rotates upward, and the upper frame member 23 and the lower frame member 21 are opened. In this state, when the belt 13, which is the object to be measured, is inserted between the upper frame member 23 and the lower frame member 21 (Fig. 2), and the grip 24 is released, the upper frame member 23 is moved by the elastic force of the restoring spring. is restored downward, and the upper frame member 23 and lower frame member 2
1 is closed and the belt 13 is held between the claws 21a and 22a (FIG. 3).
下側枠部材２１の内側すなわちグリップ２２の反対側に
は、振動センサ３１が取付けられる。この振動センサ３
１自体は従来公知のものであり、断面コ字状を呈し、そ
の内部には相互に対向する一対のマイクロフォンが設け
られる。振動センサ３１は、第２図および第３図に示す
状態において、こレラのマイクロフォンの間にベルト１
３が配置されるように設けられており、被測定物である
ベルト１３の振動により発生する音を検出する。その測
定可能な周波数域は３５Ｈｚ〜３００Ｈｚである。振動
センサ３１の検出信号は演算表示部３２に伝送され、こ
こにおいて、後述するようにタイミングベルト１３の張
力が求められ、表示される。A vibration sensor 31 is attached to the inside of the lower frame member 21, that is, on the opposite side of the grip 22. This vibration sensor 3
The device 1 itself is conventionally known and has a U-shaped cross section, and a pair of microphones facing each other are provided inside the device. In the state shown in FIGS. 2 and 3, the vibration sensor 31 is connected to the belt 1 between the microphones of this camera.
3, and detects the sound generated by the vibration of the belt 13, which is the object to be measured. Its measurable frequency range is 35Hz to 300Hz. The detection signal of the vibration sensor 31 is transmitted to the calculation display section 32, where the tension of the timing belt 13 is determined and displayed as will be described later.
ベルト１３に振動を付与するため、ヒツトパー３５が設
けられる。ヒツトパー３５は、第４図および第５図に示
すように、下側枠部材２１とグリップ２２の連結部２６
にピン３６を介して揺動自在に取付けられる。ヒツトパ
ー３５の先端部３７は、ベルト１３の上方に位置し、張
力測定時このベルト１３を叩くものであり、この先端部
３７の反対側には操作片３８が形成される。ヒツトパー
３５の途中に形成された湾曲部３９は、ヒツトパー３５
が上側枠部材２３に干渉しないようにするためのもので
ある。コイルばね３３はピン３４に嵌合させて設けられ
、このばね３３の一端は連結部２６に、また他端はヒツ
トパー３５に連結される。A hitter 35 is provided to impart vibration to the belt 13. As shown in FIG. 4 and FIG.
via a pin 36 so as to be swingable. A tip 37 of the hitper 35 is located above the belt 13 and is used to strike the belt 13 when measuring tension, and an operating piece 38 is formed on the opposite side of the tip 37. The curved portion 39 formed in the middle of the hit par 35
This is to prevent the upper frame member 23 from interfering with the upper frame member 23. A coil spring 33 is provided to fit into the pin 34, and one end of the spring 33 is connected to the connecting portion 26, and the other end is connected to the hitper 35.
したがってヒツトパー３５は、中立位置においてグリッ
プ２２に平行であり、先端部３７はベルト１３から離間
している。上側枠部材２３および下側枠部材２１により
ベルト１３を挟持した状態で、操作片３８を下に弾くと
、ばね３３の弾発力により、先端部３７はベルト１３を
叩き、ベルト１３は振動を与えられる。ヒツトパー３５
は元の水平位置へ復元し、ベルト１３から離間した状態
で静止する。The hitper 35 is therefore parallel to the grip 22 in its neutral position, and its tip 37 is spaced apart from the belt 13. When the operating piece 38 is flicked downward with the belt 13 being held between the upper frame member 23 and the lower frame member 21, the tip 37 hits the belt 13 due to the elastic force of the spring 33, and the belt 13 stops vibrating. Given. hit par 35
returns to its original horizontal position and stands still apart from the belt 13.
さて、振動数とベルトのスパンとの間には、次の関係が
ある。Now, the following relationship exists between the frequency of vibration and the span of the belt.
Ｆ＝（μル１ン（２ＸＬ））Ｘ、／’？ （１）但し
、Ｆはベルトスパンの振動数（Ｈ２）Ｇは重力の加速度
（９８１ｃｍ／ｓ”）Ｒはベルト単位長さ当り重量（ｋ
ｇｆ／ｃｎ＋）Ｌはスパン長さ（Ｃ顛）
Ｔはベルトスパン張力（ｋｇｆ）
である。F=(μL1n(2XL))X,/'? (1) However, F is the belt span frequency (H2), G is the acceleration of gravity (981 cm/s"), and R is the weight per belt unit length (k).
gf/cn+)L is the span length (C length) and T is the belt span tension (kgf).
（１）式から理解されるように、振動数を検出すること
により、ベルト１３の張力が求められる。As understood from equation (1), the tension of the belt 13 can be determined by detecting the vibration frequency.
なお、より正確なベルト張力を求めるためには、測定装
置２０の特性等あるいはスパン長さを考慮して、実験式
を用いてもよい。この実験式の例として発明者は、スパ
ン長さが１５．２４ｃｍの場合、Ｆ＝ＡＸ 、／’Ｔ＋
２ ｏ、 ４ （２）を得た。なお、こ
こで、
Ａ＝０．８７８Ｘ１／び＋２．２ （３）である
。Note that in order to obtain a more accurate belt tension, an experimental formula may be used in consideration of the characteristics of the measuring device 20 or the span length. As an example of this experimental formula, the inventor wrote that when the span length is 15.24 cm, F=AX, /'T+
2 o, 4 (2) was obtained. Note that here, A=0.878X1/+2.2 (3).
以上のように本実施例は、ベルト１３の特定のスパンに
振動を発生させ、この振動数からベルト１３の張力を検
出している。このように、ベルト１３の２点を挟持して
所定長さの被測定部分を形成することにより、ベルト１
３の全体のスパン長さに関係なく、センサ３１により検
出可能な高い振動数が得られる。したがってベルト１３
の張力の測定精度が向上する。また本実施例は、グリッ
プ２２．２４を片手で持ったままヒツトパー３５の操作
片３８を弾くことができるように構成されている。した
がって、張力の検出が容易であり、きわめて迅速に実施
できる。As described above, in this embodiment, vibration is generated in a specific span of the belt 13, and the tension of the belt 13 is detected from the frequency of this vibration. In this way, by sandwiching two points of the belt 13 to form a portion to be measured of a predetermined length, the belt 1
Regardless of the overall span length of 3, high frequencies are obtained that can be detected by sensor 31. Therefore belt 13
The accuracy of tension measurement is improved. Further, this embodiment is configured so that the operating piece 38 of the hitper 35 can be played while holding the grip 22, 24 with one hand. Therefore, tension detection is easy and can be performed very quickly.
ベルト１３の被測定部分の長さすなわち爪２１ａ、２１
ａ間の距離は、１０ｃｍ〜２０ｃｍが好ましく、特に１
５．２４ｃｍが好ましい。これは、必要測定範囲におい
て、所定範囲の振動数が得られるからである。The length of the part to be measured of the belt 13, that is, the claws 21a, 21
The distance between a is preferably 10 cm to 20 cm, especially 1
5.24 cm is preferred. This is because a predetermined range of vibration frequencies can be obtained within the required measurement range.
なお、ベルト１３の振動数から張力への換算は、演算表
示部３２により行う必要はなく、これとは別に行うよう
にしてもよい。Note that the conversion from the frequency of the belt 13 to the tension does not need to be performed by the calculation display unit 32, and may be performed separately.
また爪２１ａ、２２ａの形状は、ベルト１３を２か所に
おいて固定できるものであれば、いかなる形状のもので
もよい。Further, the claws 21a and 22a may have any shape as long as they can fix the belt 13 at two locations.
ヒツトパー３５の形状にも限定はなく、またその材質は
、ベルト１３に振動を発生させることができるものであ
れば、何でも良い。There is no limitation to the shape of the hitter 35, and any material may be used as long as it can generate vibrations in the belt 13.
さらに振動センサ３１についても、実施例のものに限定
されず、他のいかなるセンサであってもよい。Further, the vibration sensor 31 is not limited to the one in the embodiment, and may be any other sensor.
以上のように本発明によれば、スパンの長いベルトであ
っても、高精度で張力を得ることが可能になり、しかも
簡便かつ迅速に振動測定を実施できる、という効果が得
られる。As described above, according to the present invention, it is possible to obtain tension with high accuracy even for a belt with a long span, and vibration measurement can be carried out simply and quickly.
第１図は本発明の一実施例装置の使用状態を示す正面図
、
第２図はベルトを挟む前の状態における実施例装置を示
す斜視図、
第３図はベルトを挟んだ状態における実施例装置を示す
斜視図、
第４図はヒツトバーとグリップを示す側面図、第５図は
ヒツトバーとグリップを示す平面図である。
ベルト
下側−枠部材
上側枠部材
センサ
演算表示部
ヒツトバーFig. 1 is a front view showing the usage state of an embodiment of the device of the present invention, Fig. 2 is a perspective view of the embodiment device in a state before a belt is pinched, and Fig. 3 is an embodiment in a state where a belt is pinched. FIG. 4 is a side view showing the hit bar and grip, and FIG. 5 is a plan view showing the hit bar and grip. Belt lower side - frame member upper frame member sensor calculation display section hit bar
Claims (2)
部分を形成し、該被測定部分を叩いて振動を発生させる
とともにその振動の周波数を検出することを特徴とする
振動測定方法。(1) Vibration measurement characterized by sandwiching two points of the belt to be measured to form a part to be measured of a predetermined length, and striking the part to be measured to generate vibration and detecting the frequency of the vibration. Method.
部を形成する挟持機構と、該被測定部を叩いて振動を発
生させる手段と、上記振動の周波数を検出するセンサと
を備えたことを特徴とする振動測定装置。(2) A clamping mechanism that pinches two points of the belt to be measured to form a part to be measured of a predetermined length, a means for generating vibration by hitting the part to be measured, and a sensor that detects the frequency of the vibration. A vibration measuring device characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1216072A JP2516816B2 (en) | 1989-08-24 | 1989-08-24 | Timing belt vibration measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1216072A JP2516816B2 (en) | 1989-08-24 | 1989-08-24 | Timing belt vibration measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0381633A true JPH0381633A (en) | 1991-04-08 |
| JP2516816B2 JP2516816B2 (en) | 1996-07-24 |
Family
ID=16682822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1216072A Expired - Lifetime JP2516816B2 (en) | 1989-08-24 | 1989-08-24 | Timing belt vibration measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2516816B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5698796A (en) * | 1995-06-05 | 1997-12-16 | Mitsubishi Denki Kabushiki Kaisha | Belt tension measuring apparatus |
| US5877431A (en) * | 1995-04-24 | 1999-03-02 | Mitsubishi Denki Kabushiki Kaisha | Apparatus for measuring tension of belt |
| US7279009B2 (en) | 2000-03-29 | 2007-10-09 | Massachusetts Institute Of Technology | Speed-adaptive and patient-adaptive prosthetic knee |
| JP2008112903A (en) * | 2006-10-31 | 2008-05-15 | Matsushita Electric Ind Co Ltd | Manufacturing method of mounting substrate, and component mounting machine |
| JP2011174747A (en) * | 2010-02-23 | 2011-09-08 | West Japan Railway Co | Tension measuring device of overhead wire |
| DE102012017316A1 (en) * | 2012-09-03 | 2014-05-15 | Thyssenkrupp Presta Aktiengesellschaft | Measuring device with measuring fork for measuring the belt tension |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61278725A (en) * | 1985-06-05 | 1986-12-09 | Hitachi Ltd | Tension measuring instrument |
-
1989
- 1989-08-24 JP JP1216072A patent/JP2516816B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61278725A (en) * | 1985-06-05 | 1986-12-09 | Hitachi Ltd | Tension measuring instrument |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5877431A (en) * | 1995-04-24 | 1999-03-02 | Mitsubishi Denki Kabushiki Kaisha | Apparatus for measuring tension of belt |
| US5698796A (en) * | 1995-06-05 | 1997-12-16 | Mitsubishi Denki Kabushiki Kaisha | Belt tension measuring apparatus |
| US7279009B2 (en) | 2000-03-29 | 2007-10-09 | Massachusetts Institute Of Technology | Speed-adaptive and patient-adaptive prosthetic knee |
| JP2008112903A (en) * | 2006-10-31 | 2008-05-15 | Matsushita Electric Ind Co Ltd | Manufacturing method of mounting substrate, and component mounting machine |
| JP2011174747A (en) * | 2010-02-23 | 2011-09-08 | West Japan Railway Co | Tension measuring device of overhead wire |
| DE102012017316A1 (en) * | 2012-09-03 | 2014-05-15 | Thyssenkrupp Presta Aktiengesellschaft | Measuring device with measuring fork for measuring the belt tension |
| DE102012017316B4 (en) * | 2012-09-03 | 2019-11-21 | Thyssenkrupp Presta Aktiengesellschaft | Measuring device with measuring fork for measuring the belt tension |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2516816B2 (en) | 1996-07-24 |
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