JPS5918086Y2 - Governor device for air equipment - Google Patents
Governor device for air equipmentInfo
- Publication number
- JPS5918086Y2 JPS5918086Y2 JP1978010259U JP1025978U JPS5918086Y2 JP S5918086 Y2 JPS5918086 Y2 JP S5918086Y2 JP 1978010259 U JP1978010259 U JP 1978010259U JP 1025978 U JP1025978 U JP 1025978U JP S5918086 Y2 JPS5918086 Y2 JP S5918086Y2
- Authority
- JP
- Japan
- Prior art keywords
- governor
- air
- hole
- main body
- air motor
- 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.)
- Expired
Links
Landscapes
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Description
【考案の詳細な説明】
本考案は、空気機器などのエアモータの回転数を常時一
定に保持せしめるためのガバナー装置に係り、該ガバナ
ー装置のガバナ一部に故障が生じた際に、ガバナー装置
自体がエアモータへの供給空気を自動的に遮断せしめう
るよう安全機能を備えたガバナー装置に関するものであ
る。[Detailed description of the invention] The present invention relates to a governor device for constantly maintaining the rotational speed of an air motor of an air equipment, etc. When a failure occurs in a part of the governor of the governor device, the governor device itself This invention relates to a governor device equipped with a safety function so that the air supply to the air motor can be automatically shut off.
空気機器、たとえばエアグラインダ等は研削作業の向上
を計る目的として年々高速化しつつある。Pneumatic equipment, such as air grinders, is becoming faster and faster each year to improve grinding operations.
しかし安全でかつむらのない研削面を得ることのできる
上記高速研削作業を行なうためには、砥石Ａの駆動装置
であるエアーモータの回転を一定回転数とする必要があ
り、そのため、従来においては第１図に示すごとく、エ
アグラインダ１には空気供給孔２と供給室３を介して連
通ずる給気７Ｌ４との間に、エアモータ５への供給空気
の空気量を調整するガバナー装置６が内蔵されている。However, in order to perform the above-mentioned high-speed grinding work that is safe and allows for obtaining an even grinding surface, it is necessary to keep the air motor, which is the driving device for the grinding wheel A, at a constant rotation speed. As shown in FIG. 1, the air grinder 1 has a built-in governor device 6 between the air supply hole 2 and the air supply 7L4 communicating through the supply chamber 3, which adjusts the amount of air supplied to the air motor 5. has been done.
この種ガバナー装置６は一般に、一対のガバナー爪７を
揺動自在に枢軸８をもって設けたガバナ一本体９を上記
エアモータ５の回転軸５′後端に形成された連結孔１０
に一体的に螺設するとともに、上記ガバナ一本体９の中
心に摺動可能に貫通された調速軸１１の上記連結孔１０
内の一端に、該調速軸１１を常時は前方へ付勢する弾機
１２を縮設し、かつこの他端には上記ガバナー爪７にて
係止される調速弁１３を抜止状に備えた構成としている
。This type of governor device 6 generally includes a governor main body 9 having a pair of governor pawls 7 swingably mounted on a pivot 8, and a connecting hole 10 formed at the rear end of the rotation shaft 5' of the air motor 5.
The connecting hole 10 of the regulating shaft 11 is integrally screwed into the governor body 9 and is slidably penetrated through the center of the governor main body 9.
A bullet 12 that normally urges the speed regulating shaft 11 forward is compressed at one end of the inner end, and a speed regulating valve 13 that is locked by the governor pawl 7 is fixed at the other end. The structure is equipped with the following.
したがって供給孔２より供給された空気は、供給室３を
介して給気孔４からエアモータ５に導びかれて回転し、
それに追従してガバナー装置６のガバナ一本体９も回転
する。Therefore, the air supplied from the supply hole 2 is led from the air supply hole 4 through the supply chamber 3 to the air motor 5 and rotates.
Following this, the governor body 9 of the governor device 6 also rotates.
上記ガバナ一本体９の回転がある一定以上の回転に達し
た際、弾機１２の付勢力に抗したガバナー爪７に発生す
る遠心力により、該ガバナー爪７は枢軸８を支点として
調速軸１１に備えられた調速弁１３を供給孔２１１Ｉｌ
へ移動せしめうるよう揺動して供給空気の供給量を減少
させる。When the rotation of the governor main body 9 reaches a certain level or more, the centrifugal force generated in the governor pawl 7 against the biasing force of the bullet 12 causes the governor pawl 7 to rotate around the pivot shaft 8 as a fulcrum. The regulating valve 13 provided in 11 is connected to the supply hole 211Il.
The amount of supplied air is reduced by rocking the air so that it can be moved to the opposite direction.
この供給量の減少によりエアモータ５は減速され、した
がって調速弁１３は、弾機１２の付勢力により復元すべ
く移動して供給量を増加せしめ、エアモータ５の回転を
加速させる。Due to this decrease in the supply amount, the air motor 5 is decelerated, and therefore the regulating valve 13 is moved to restore its original state by the biasing force of the ammunition 12, thereby increasing the supply amount and accelerating the rotation of the air motor 5.
この繰返しが行なわれることで、供給孔２からの供給量
が自動調整されてエアモータ５の回転を一定回転数に維
持せしめうるようなされている。By repeating this process, the supply amount from the supply hole 2 is automatically adjusted and the rotation of the air motor 5 can be maintained at a constant rotation speed.
しかし高速研削作業中、上述ガバナー装置６が故障した
際、エアモータ５は超高速回転となって危険な研削作業
となり、安全管理上、その信頼性に乏しいと言う問題点
があった。However, when the governor device 6 fails during high-speed grinding work, the air motor 5 rotates at an extremely high speed, resulting in dangerous grinding work, and there is a problem in that reliability is poor in terms of safety management.
本考案は上述に鑑みなされたもので、ガバナ一部に故障
が生じた際には、ガバナー装置自体がエアモータへの供
給空気を自動的に遮断することのできる安全機能を備え
たガバナー装置を提供せんとするにあり、以下その一実
施例を示す第２図〜第４図の添付図面に基づいて詳細に
説明する。The present invention has been developed in view of the above, and provides a governor device that has a safety function that allows the governor device itself to automatically cut off the air supply to the air motor when a failure occurs in a part of the governor. In the following, one embodiment of the present invention will be described in detail based on the accompanying drawings of FIGS. 2 to 4.
なお図中、同一符号は同一部分または相当部分を示す。In the drawings, the same reference numerals indicate the same or equivalent parts.
すなわち、第４図において、１はエアグラインダ、２は
供給孔、３は供給室、４は給気孔、５はエアモータ、５
′はその回転軸、１０は回転軸、５′後端に設けられた
連結孔であり、該連結孔１０に同図のごとく本考案のガ
バナー装置が一体的に連結される。That is, in FIG. 4, 1 is an air grinder, 2 is a supply hole, 3 is a supply chamber, 4 is an air supply hole, 5 is an air motor, 5
'' is its rotating shaft, 10 is its rotating shaft, and 5' is a connecting hole provided at the rear end, and the governor device of the present invention is integrally connected to the connecting hole 10 as shown in the figure.
上記本考案のガバナー装置はガバナー機構２１と安全ピ
ン機構２２とで構成されている。The governor device of the present invention is comprised of a governor mechanism 21 and a safety pin mechanism 22.
前者ガバナー機構２１は、上記連結孔１０に、一対のガ
バナー片２３を枢軸２４をもって揺動自在に付設し、か
つ中央部に軸心貫通孔２５を有するガバナ一本体２６を
螺嵌して一体的に連結するとともに、上記貫通孔２５に
一端２７を挿入して支持された調速軸２８の他端２９に
軸方向の摺動自在に外嵌装された調速弁３０を備えてい
る。The former governor mechanism 21 has a pair of governor pieces 23 swingably attached to the connection hole 10 with a pivot 24, and a governor main body 26 having an axial through hole 25 in the center is screwed into an integral structure. A regulating valve 30 is provided on the other end 29 of the regulating shaft 28, which is supported by having one end 27 inserted into the through hole 25, and externally fitted so as to be slidable in the axial direction.
また上記調速弁３０は、前部に上記ガバナー片２３の爪
部３１に係合するフランジ部３２を形成し、かつ後部外
周の軸方向に図のごとく長孔３３を穿設しており、該長
孔３３を介し上記調速軸２８に植設されるピン３４をも
ってばね受金具３５を取付け、このばね受金具３５と上
記フランジ部３２間の調速弁３０外周に、常時は該調速
弁３０に前方への付勢力を付与してガバナー片２３の爪
部３１を押圧せしめる弾機３６を装設している。Further, the speed regulating valve 30 has a flange portion 32 formed in the front portion thereof that engages with the claw portion 31 of the governor piece 23, and has a long hole 33 bored in the axial direction of the outer circumference of the rear portion as shown in the figure. A spring receiving fitting 35 is attached to the regulating valve 30 between the spring receiving fitting 35 and the flange portion 32 by using a pin 34 implanted in the regulating shaft 28 through the elongated hole 33. A bomb 36 is installed which applies a forward biasing force to the valve 30 to press the claw portion 31 of the governor piece 23.
後者安全ピン機構２２は、上記ガバナ一本体２６の一側
に穿設した横孔３７内に、頭部に重錘３８を一体的に形
成した安全ピン３９の先端を、ガバナ一本体２６の貫通
孔２５に挿入された調速軸２８の門札４０に嵌合すべく
挿入して、常時は調速軸２８をガバナ一本体２６に固定
するとともに、上記安全ピン３９に形成された環状溝４
１に、上記ガバナ一本体２６内に栓ねし４２により、弾
機４３を介して組込まれた球体４４を嵌接して常時は安
全ピン３９の外方への飛出し退勤を阻止している。The latter safety pin mechanism 22 inserts the tip of a safety pin 39, whose head is integrally formed with a weight 38, into a horizontal hole 37 bored on one side of the governor body 26, through the governor body 26. The annular groove 4 formed in the safety pin 39 is inserted to fit into the gate plate 40 of the regulating shaft 28 inserted into the hole 25 to normally fix the regulating shaft 28 to the governor body 26.
1, a ball 44 incorporated into the governor main body 26 via a bullet 43 is fitted by a stopper 42 to prevent the safety pin 39 from flying outward at all times.
なお上記連結孔１０内には、上記安全ピン機構２２の安
全ピン３９により、常時はガバナ一本体２６に固定とな
した貫通孔２５に挿入された調速軸２８に付勢力を付与
するための弾機４５が介装されている。In addition, in the connecting hole 10, there is provided a biasing force for applying a biasing force to the speed regulating shaft 28 inserted into the through hole 25, which is normally fixed to the governor body 26, by the safety pin 39 of the safety pin mechanism 22. A bomb 45 is interposed.
本考案のガバナー装置は、以上のごとく構成され、次に
その作動を説明する。The governor device of the present invention is constructed as described above, and its operation will be explained next.
まず供給孔２からの供給空気は、供給室３、給気孔４を
経てエアモータ５内に導びかれ該エアモータ５を回転さ
せる。First, the air supplied from the supply hole 2 is guided into the air motor 5 through the supply chamber 3 and the air supply hole 4, and rotates the air motor 5.
このエアモータ５の回転とともにガバナ一本体２６も回
転し、ある一定以上の回転数に達して弾機３６の付勢力
に抗した遠心力がガバナー片２３に発生すると、該ガバ
ナー片２３は枢軸２４を支点として揺動し、その時ガバ
ナー片２３の爪部３１により調速弁３０はピン３４に案
内されながら供給孔２側である後方へ摺動し、該供給孔
２からの供給空気量を減少する。As the air motor 5 rotates, the governor main body 26 also rotates, and when the rotation speed reaches a certain level or more and a centrifugal force resisting the biasing force of the bomb 36 is generated in the governor piece 23, the governor piece 23 rotates around the pivot 24. It swings as a fulcrum, and at this time, the speed regulating valve 30 is guided by the pin 34 by the claw portion 31 of the governor piece 23 and slides backward toward the supply hole 2 side, reducing the amount of air supplied from the supply hole 2. .
したがってエアモータ５は減速されると同時に弾機３６
の付勢力により調速弁３０は前方へ復元し、この繰返し
摺動で供給孔２からの供給空気量は自動調整されてエア
モータ５の回転数はある一定の回転数となり、砥石Ａの
回転を一定としてむらのない研削面を得ることのできる
研削作業を行なうことができる。Therefore, the air motor 5 is decelerated and at the same time the ammunition 36 is
The regulating valve 30 returns to the front due to the urging force, and by this repeated sliding, the amount of air supplied from the supply hole 2 is automatically adjusted, the rotational speed of the air motor 5 becomes a certain constant rotational speed, and the rotation of the grindstone A is controlled. Grinding operations can be performed that provide a constant and even grinding surface.
また非常時、すなわち上記したガバナー機構２１が故障
して供給空気量の自動調整がなされながった場合、エア
モータ５は超高速回転となって危険此の上無い。Further, in an emergency, that is, when the governor mechanism 21 described above breaks down and the amount of supplied air cannot be automatically adjusted, the air motor 5 rotates at an extremely high speed, which is extremely dangerous.
この場合ガバナ一本体２６内に弾機４３を介して組込ま
れた球体４４の環状溝４１への嵌接により、外方への飛
出し退勤が阻止された安全ピン３９は、該安全ピン３９
の重錘３８に上記超高速回転により発生する遠心力作用
によって、弾機４３の付勢力に抗して球体４４を押退け
ながら外方へ飛出し退勤して、調速軸２８のガバナ一本
体２６への固定を解き、したがって調速軸２８は、弾機
４５の付勢力で供給孔２側へ摺動して該供給孔２を閉塞
し、供給空気を遮断してエアモータ５を停止させる。In this case, the safety pin 39 is prevented from flying outward by fitting into the annular groove 41 of the sphere 44 incorporated into the governor main body 26 via the bullet 43.
Due to the centrifugal force generated by the ultra-high speed rotation on the weight 38, it flies outward while pushing away the sphere 44 against the biasing force of the bullet 43, and the governor body of the speed regulating shaft 28 26, the regulating shaft 28 slides toward the supply hole 2 by the biasing force of the bullet 45, closes the supply hole 2, cuts off the supply air, and stops the air motor 5.
なお実施例においてはエアグラインダーについて説明し
たが、それにかぎるものではなく、供給空気を原動源と
するすべての空気機器に用いられることは勿論である。In the embodiment, an air grinder has been described, but the present invention is not limited to this, and it goes without saying that the present invention can be used for all types of air equipment that use supplied air as a driving source.
このように本考案の空気機器におけるガバナー装置は構
成されているため、従来のようにガバナー装置の故障の
ために発生する砥石の超高速回転による研削作業の危険
性の増大、および研削面むら発生などの問題が、本考案
のガバナー装置によりすべて解消されて、安全てがつむ
らのない研削面を得ることのできる研削作業が容易に行
なわれ、作業具の安全管理の信頼性の向上および作業能
率の向上が同時に計れるという優れた効果を有する考案
である。Since the governor device of the pneumatic equipment of the present invention is configured in this way, the risk of grinding work increases due to the ultra-high speed rotation of the grinding wheel that occurs due to a failure of the governor device, and the unevenness of the ground surface occurs. The governor device of the present invention solves all of these problems, making it easier to perform grinding operations that provide a safe and even grinding surface, improving the reliability of work tool safety management, and increasing work efficiency. This is a device that has the excellent effect of being able to simultaneously measure the improvement of
第１図は従来のガバナー装置を内蔵した空気機器である
エアグラインダの一部切欠断面図、第２図は本考案のガ
バナー装置を示す断面図、第３図は第２図におけるＩＩ
Ｉ−ＩＩＩ線矢視断面図、第４図は本考案のガバナー装
置の分解斜視図である。
Ａは砥石、１はエアグラインダ、２は供給孔、５はエア
モータ、５′はエアモータの回転軸、１０は回転軸５′
後端の連結孔、２１はガバナー機構、２２は安全ピン機
構、２３はガバナー片、２５は貫通孔、２６はガバナ一
本体、２８は調速軸、２７はその一端部、２９はその他
端部、３０は調速弁、３１はガバナー片の爪部、３２は
調速弁３０のフランジ部、３７は横孔、３９は安全ピン
、３８は安全ピン３９の重錘、４５は弾機。Fig. 1 is a partially cutaway sectional view of an air grinder, which is a pneumatic equipment with a built-in conventional governor device, Fig. 2 is a sectional view showing the governor device of the present invention, and Fig. 3 is the II in Fig. 2.
A sectional view taken along the line I-III and FIG. 4 are exploded perspective views of the governor device of the present invention. A is a grindstone, 1 is an air grinder, 2 is a supply hole, 5 is an air motor, 5' is a rotating shaft of the air motor, 10 is a rotating shaft 5'
Connection hole at the rear end, 21 is a governor mechanism, 22 is a safety pin mechanism, 23 is a governor piece, 25 is a through hole, 26 is a governor main body, 28 is a regulating shaft, 27 is one end thereof, 29 is the other end , 30 is a regulating valve, 31 is a claw portion of a governor piece, 32 is a flange portion of the regulating valve 30, 37 is a horizontal hole, 39 is a safety pin, 38 is a weight of the safety pin 39, and 45 is a bullet.
Claims (1)
べく該エアモータに送給する動力空気の送給量を適宜自
動的に調整させるようにした装置において、上記装置を
エアモータ５の回転軸５′後端に穿設した連結孔１０に
対して一体的に装着させるガバナー機構２１と、該ガバ
ナー機構２１の本体２６に設けた軸心貫通孔２５に対し
てその軸心方向の摺動自在に一端部２７が挿入支持され
、他端部２９にこれに外嵌装されて軸方向の摺動自在、
かつその前端に上記本体２６に付設されたガバナー片２
３の爪部３１に係合せしめるフランジ部３２を形成した
弾機３６を外装せしめた筒状の調速弁３０を備えた調速
軸２８とで構成するとともに上記本体２６−側に穿設し
た横孔３７内にこの本体２６の貫通孔２５内で上記調速
軸２８を常時は一体的に固定し、かつ非常時にはその異
常回転遠心力作用を受けてその固定を解くように退勤可
能な重錘頭部３８を備えた安全ピン機構２２と、該安全
ピン機構２２の安全ピン３９が退勤した際、上記調速軸
２８をその後方に対位させた空気供給孔２側へ移動当接
可能に押圧せしめる弾機４５とを具備せしめて成ること
を特徴とする空気機器におけるガバナー装置。In a device that automatically adjusts the amount of power air supplied to the air motor to keep the rotational speed of the air motor of the air equipment constant at all times, the device is connected to the rotation shaft 5' of the air motor 5. A governor mechanism 21 is integrally attached to the connecting hole 10 bored at the rear end, and one end is slidably axially slidable in the axial through hole 25 formed in the main body 26 of the governor mechanism 21. The portion 27 is inserted and supported, and is externally fitted to the other end portion 29 so as to be freely slidable in the axial direction.
and a governor piece 2 attached to the main body 26 at its front end.
A speed regulating shaft 28 is provided with a cylindrical speed regulating valve 30 which is covered with a bullet 36 having a flange portion 32 that engages with the claw portion 31 of No. 3, and is bored on the main body 26- side. The regulating shaft 28 is normally fixed integrally in the through hole 25 of the main body 26 in the horizontal hole 37, and in an emergency, the fixation is released by the centrifugal force of the abnormal rotation. When the safety pin mechanism 22 equipped with the weight head 38 and the safety pin 39 of the safety pin mechanism 22 are out of work, the speed regulating shaft 28 can be moved to the side of the air supply hole 2 opposite to the rear thereof. 1. A governor device for pneumatic equipment, characterized in that the governor device is equipped with a bullet 45 for pressing the air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978010259U JPS5918086Y2 (en) | 1978-01-30 | 1978-01-30 | Governor device for air equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978010259U JPS5918086Y2 (en) | 1978-01-30 | 1978-01-30 | Governor device for air equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54114173U JPS54114173U (en) | 1979-08-10 |
| JPS5918086Y2 true JPS5918086Y2 (en) | 1984-05-25 |
Family
ID=28822521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978010259U Expired JPS5918086Y2 (en) | 1978-01-30 | 1978-01-30 | Governor device for air equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5918086Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5150080A (en) * | 1974-08-28 | 1976-05-01 | Chicago Pneumatic Tool Co | Kaitenkoguno kakaitenboshisochi |
-
1978
- 1978-01-30 JP JP1978010259U patent/JPS5918086Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5150080A (en) * | 1974-08-28 | 1976-05-01 | Chicago Pneumatic Tool Co | Kaitenkoguno kakaitenboshisochi |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54114173U (en) | 1979-08-10 |
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