JP2000272365A - Structure of power take-off device - Google Patents
Structure of power take-off deviceInfo
- Publication number
- JP2000272365A JP2000272365A JP11085320A JP8532099A JP2000272365A JP 2000272365 A JP2000272365 A JP 2000272365A JP 11085320 A JP11085320 A JP 11085320A JP 8532099 A JP8532099 A JP 8532099A JP 2000272365 A JP2000272365 A JP 2000272365A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- output shaft
- bearings
- gear
- bearing
- 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
- 230000001154 acute effect Effects 0.000 claims abstract description 5
- 230000008878 coupling Effects 0.000 claims abstract 3
- 238000010168 coupling process Methods 0.000 claims abstract 3
- 238000005859 coupling reaction Methods 0.000 claims abstract 3
- 239000003921 oil Substances 0.000 abstract description 31
- 239000010687 lubricating oil Substances 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 abstract 1
- 238000005461 lubrication Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、エンジンのクラン
クシャフトからギヤトレーンを介して動力を分岐して取
り出す装置であって、その出力軸は前記ギヤトレーンに
連なるパワーテークオフギヤを挟んで複数のベアリング
で支持され、その後端部に連結手段を設けたパワテーク
オフ装置（以下、ＰＴＯ装置と記す）の構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for branching and extracting power from a crankshaft of an engine via a gear train, the output shaft of which is supported by a plurality of bearings across a power take-off gear connected to the gear train. The present invention relates to a structure of a power take-off device (hereinafter, referred to as a PTO device) provided with a connecting means at a rear end thereof.
【０００２】[0002]
【従来の技術】従来のエンジンのクランクシャフトの後
端部からギヤトレーンを介して動力を分岐して取り出す
ＰＴＯ装置の一例が図３に示されている。図３におい
て、クランクシャフト１１後端のフライホイール１２と
の間に駆動ギヤ１３が設けられ、アイドルギヤ１４を介
してＰＴＯギヤ４が駆動されてギヤトレーンが構成され
ている。そのＰＴＯギヤ４は、ハウジング１とベアリン
グホルダ３とにそれぞれベヤリングを介して支持された
出力軸であるＰＴＯシャフト２２に固設されており、Ｐ
ＴＯシャフト２２の後端には連結手段であるコンパニオ
ンフランジ７が固設されて動力が取り出せるように構成
されている。2. Description of the Related Art FIG. 3 shows an example of a conventional PTO device in which power is branched from a rear end of a crankshaft of an engine via a gear train and taken out. In FIG. 3, a drive gear 13 is provided between a flywheel 12 at a rear end of a crankshaft 11, and a PTO gear 4 is driven via an idle gear 14 to form a gear train. The PTO gear 4 is fixed to a PTO shaft 22 which is an output shaft supported on the housing 1 and the bearing holder 3 via bearings, respectively.
At the rear end of the TO shaft 22, a companion flange 7 serving as a connecting means is fixed so that power can be taken out.
【０００３】そのＰＴＯシャフト２２を支持するベアリ
ングは、前方のハウジング１側にはローラベアリング５
が、後方のケース７側にはテーパローラベアリング６
Ａ、６Ｂが対で用いられている。そして、それらのベア
リングの潤滑に対して内側のベアリング５、６Ａでは主
として飛沫によっているが、最外側のベアリング６Ｂに
対してはＰＴＯシャフト２２の前端から穿孔され、２つ
のテーパローラベアリング６Ａ、６Ｂ間に開孔するオイ
ル孔２２ａが設けられて潤滑するように構成されてい
る。そして、最外側のベアリング６Ｂの後方には、フラ
ンジ７の外径部とホルダ３との間にオイルシール８が介
装され、また、ホルダ３にはハウジング側に連通するオ
イル戻し孔３ａが穿孔されて、テーパローラベアリング
６Ｂを通ったオイルはハウジング１内に戻るように構成
されている。A bearing for supporting the PTO shaft 22 is provided with a roller bearing 5 on the front housing 1 side.
However, a tapered roller bearing 6 is provided on the rear case 7 side.
A and 6B are used in pairs. The inner bearings 5 and 6A mainly spray due to the lubrication of the bearings, but the outermost bearing 6B is pierced from the front end of the PTO shaft 22, and is formed between the two tapered roller bearings 6A and 6B. Is provided with an oil hole 22a which is opened in the hole. An oil seal 8 is interposed between the outer diameter portion of the flange 7 and the holder 3 behind the outermost bearing 6B, and an oil return hole 3a communicating with the housing is formed in the holder 3. Then, the oil that has passed through the tapered roller bearing 6B is configured to return to the inside of the housing 1.
【０００４】しかし、このような構成においては、ＰＴ
Ｏシャフト２２の前端はハウジング１の壁面Ｈと近接し
ており、オイルはＰＴＯシャフト２２前端とハウジング
１壁面Ｈとの隙間を遠心力に抗してオイル孔２２ａに入
ることになるので、最外側のベアリング６Ｂには充分供
給され得ず、ベアリング６Ｂの焼け付きといったトラブ
ルを生ずる恐れがあった。However, in such a configuration, the PT
The front end of the O-shaft 22 is close to the wall surface H of the housing 1, and the oil enters the oil hole 22a in the gap between the front end of the PTO shaft 22 and the wall surface H of the housing 1 against centrifugal force. The bearing 6B cannot be sufficiently supplied to the bearing 6B, and there is a possibility that a trouble such as burning of the bearing 6B may occur.
【０００５】[0005]
【発明が解決しようとする課題】したがって、本発明
は、ＰＴＯシャフトを支持するベアリングに対して十分
に潤滑油を供給することのできるＰＴＯ装置の構造を提
供することを目的としている。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a structure of a PTO device capable of sufficiently supplying lubricating oil to a bearing supporting a PTO shaft.
【０００６】[0006]
【課題を解決するための手段】本発明によればクランク
シャフトからギヤトレーンを介して動力を分岐して取り
出す装置であって、その出力軸は前記ギヤトレーンに連
なるパワーテークオフギヤを挟んで複数のベアリングで
支持され、その後端部に連結手段を設けたパワーテイク
オフ装置の構造において、前記ギヤの連結手段側のベア
リングは一対のベアリングで構成され、前記出力軸の前
端面からは軸線に平行な複数の油孔が穿孔され、それら
の油孔に直交して前記対のベアリングの間に開孔する油
孔によって油路が形成され、前記出力軸の前端面には回
転方向に鋭角をなして複数の溝が設けられている。According to the present invention, there is provided an apparatus for branching and extracting power from a crankshaft via a gear train, the output shaft of which is formed by a plurality of bearings across a power take-off gear connected to the gear train. In the structure of the power take-off device supported and provided with connecting means at its rear end, the bearing on the connecting means side of the gear is constituted by a pair of bearings, and a plurality of oils parallel to the axis from the front end face of the output shaft. A hole is formed, an oil passage is formed by an oil hole opened between the pair of bearings at right angles to the oil hole, and a plurality of grooves are formed on the front end face of the output shaft at an acute angle in the rotational direction. Is provided.
【０００７】上記のように構成された本発明によれば、
出力軸の前端面に対向する壁面を伝って落下するオイル
は出力軸端面の溝の回転によって内方に集められ、出力
軸の油孔に導かれる。そして、その油孔は、複数本、つ
まり軸心より外径寄りに設けられているのでオイルは容
易に油孔入口に到達でき、遠心力によって開孔部からベ
アリング間に噴出される。したがって、従来潤滑不足で
あった連結手段側のベアリングの潤滑が改善される。According to the present invention configured as described above,
The oil that falls along the wall surface facing the front end face of the output shaft is collected inward by the rotation of the groove on the output shaft end face, and is guided to the oil hole of the output shaft. Since the oil holes are provided in a plurality, that is, closer to the outer diameter than the axis, the oil can easily reach the oil hole inlet, and is ejected from the opening to the space between the bearings by centrifugal force. Therefore, lubrication of the bearing on the connecting means side, which has been insufficiently lubricated in the past, is improved.
【０００８】[0008]
【発明の実施の形態】以下、図面を参照して本発明の実
施形態を説明する。なお、前記従来の技術で説明した図
３と同じ構成部品には、同じ符号を付し、重複説明は省
略する。図１において、ＰＴＯシャフト２には、前側の
ハウジング側から、ローラベアリング５が嵌合され、次
にＰＴＯギヤ４がスプラインを介して嵌合され、そし
て、ホルダ３に支持されたテーパローラベアリング６
Ａ、６Ｂが嵌合され、後端部にはコンパニオンフランジ
７が別のスプラインを介して嵌合されており、これらは
ナットＮで締結されている。Embodiments of the present invention will be described below with reference to the drawings. The same components as those in FIG. 3 described in the related art are denoted by the same reference numerals, and the description thereof will not be repeated. In FIG. 1, a roller bearing 5 is fitted to the PTO shaft 2 from the front housing side, then a PTO gear 4 is fitted via a spline, and a tapered roller bearing 6 supported by the holder 3.
A and 6B are fitted, and a companion flange 7 is fitted to the rear end portion via another spline, and these are fastened with a nut N.
【０００９】そして、ＰＴＯシャフト２には、その前端
部に座繰り孔２ｃが設けられ、その座繰り孔２ｃから軸
線に平行した複数本、図示の例では３本のオイル孔２ａ
が穿孔されている。さらに、そのオイル孔２ａに直交し
てホルダ３側のテーパローラベアリング６Ａ、６Ｂ間に
開孔するオイル孔２ｂが穿孔されている。また、ＰＴＯ
シャフト２のハウジング側の前端面には、図２に示すよ
うに、回転方向Ｒに鋭角θをなして、座繰り孔２ｃに至
る複数本、図示の例では４本の溝２ｄが設けられてい
る。The PTO shaft 2 is provided with a counterbore 2c at the front end thereof. From the counterbore 2c, a plurality of oil holes 2a parallel to the axis, in the illustrated example, three oil holes 2a are provided.
Are perforated. Further, an oil hole 2b is formed between the tapered roller bearings 6A and 6B of the holder 3 at right angles to the oil hole 2a. In addition, PTO
As shown in FIG. 2, the front end face of the shaft 2 on the housing side is provided with a plurality of grooves 2d, which form an acute angle .theta. I have.
【００１０】ＰＴＯシャフト２の前端面に対向するハウ
ジング壁面Ｈを伝って落下するオイルは、ＰＴＯシャフ
ト２前端面の溝２ｄが回転方向に鋭角をなしているの
で、回転によって溝２ｄに沿って内方に集められ、ＰＴ
Ｏシャフト２の座繰り孔２ｃに導かれる。そして、座繰
り孔２ｃ内の油孔２ａは、複数本、つまり軸心より外径
寄りに設けられているのでオイルは容易に油孔２ａ入口
に到達でき、油孔２ａ内と開孔部との半径差で生じる遠
心力によってベアリング６Ａ、６Ｂ間に噴出される。そ
して、ベアリング６Ｂを潤滑したオイルは、ホルダ３の
戻し孔３ａを通ってハウジング１に戻る。したがって、
従来、潤滑不足であったフランジ側のベアリング６Ｂの
潤滑が改善される。The oil that falls along the housing wall H facing the front end surface of the PTO shaft 2 is rotated along the groove 2d by rotation because the groove 2d on the front end surface of the PTO shaft 2 forms an acute angle in the rotation direction. Gathered towards the PT
The O-shaft 2 is guided to the counterbore 2c. Since a plurality of oil holes 2a in the counterbore 2c are provided near the outer diameter from the axis, oil can easily reach the inlet of the oil hole 2a. Is ejected between the bearings 6A and 6B by the centrifugal force generated by the radius difference of Then, the oil lubricating the bearing 6B returns to the housing 1 through the return hole 3a of the holder 3. Therefore,
Conventionally, lubrication of the bearing 6B on the flange side, which has been insufficiently lubricated, is improved.
【００１１】[0011]
【発明の効果】本発明は、以上説明したように構成さ
れ、以下の効果を奏する。 （１） 従来、オイル供給不足であったフランジ側ベア
リングの潤滑が改善される。 （２） 従来の構成部品に対してＰＴＯ軸のみの相違で
互換性があり、既出荷品に対しても適用できる。The present invention is configured as described above and has the following effects. (1) Conventionally, lubrication of the flange side bearing, which has been insufficient in oil supply, is improved. (2) It is compatible with conventional components only by the difference of the PTO shaft, and can be applied to already shipped products.
【図１】本発明の実施形態を示す側断面図。FIG. 1 is a side sectional view showing an embodiment of the present invention.
【図２】ＰＴＯシャフトの前端面を示す正面図。FIG. 2 is a front view showing a front end surface of the PTO shaft.
【図３】従来のＰＴＯの構成を示す断面図。FIG. 3 is a cross-sectional view showing a configuration of a conventional PTO.
１・・・ハウジング ２・・・ＰＴＯシャフト ２ａ、２ｂ・・・油孔 ２ｄ・・・溝 ３・・・ホルダ ４・・・ＰＴＯギヤ ５、６Ａ、６Ｂ・・・ベアリング ７・・・コンパニオンフランジ ８・・・オイルシール １１・・・クランクシャフト DESCRIPTION OF SYMBOLS 1 ... Housing 2 ... PTO shaft 2a, 2b ... Oil hole 2d ... Groove 3 ... Holder 4 ... PTO gear 5, 6A, 6B ... Bearing 7 ... Companion flange 8 ... Oil seal 11 ... Crankshaft
Claims (1)
して動力を分岐して取り出す装置であって、その出力軸
は前記ギヤトレーンに連なるパワーテークオフギヤを挟
んで複数のベアリングで支持され、その後端部に連結手
段を設けたパワーテイクオフ装置の構造において、前記
ギヤの連結手段側のベアリングは一対のベアリングで構
成され、前記出力軸の前端面からは軸線に平行な複数の
油孔が穿孔され、それらの油孔に直交して前記対のベア
リングの間に開孔する油孔によって油路が形成され、前
記出力軸の前端面には回転方向に鋭角をなして複数の溝
が設けられていることを特徴とするパワーテークオフ装
置の構造。1. A device for diverting power from a crankshaft via a gear train, wherein the output shaft is supported by a plurality of bearings across a power take-off gear connected to the gear train, and a connecting means is provided at a rear end thereof. In the structure of the power take-off device provided with, the bearing on the coupling means side of the gear is composed of a pair of bearings, and a plurality of oil holes parallel to the axis are drilled from the front end face of the output shaft, and these oil holes are formed. An oil path is formed by an oil hole opened between the pair of bearings perpendicular to the axis, and a plurality of grooves are provided at the front end face of the output shaft at an acute angle in the rotation direction. Power take-off device structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11085320A JP2000272365A (en) | 1999-03-29 | 1999-03-29 | Structure of power take-off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11085320A JP2000272365A (en) | 1999-03-29 | 1999-03-29 | Structure of power take-off device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000272365A true JP2000272365A (en) | 2000-10-03 |
Family
ID=13855336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11085320A Pending JP2000272365A (en) | 1999-03-29 | 1999-03-29 | Structure of power take-off device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000272365A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020191128A1 (en) * | 2019-03-19 | 2020-09-24 | CK Industries, LLC | Pto coupler protector |
| CN113803439A (en) * | 2021-09-28 | 2021-12-17 | 重庆綦同汽车配件有限责任公司 | Front power takeoff |
-
1999
- 1999-03-29 JP JP11085320A patent/JP2000272365A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020191128A1 (en) * | 2019-03-19 | 2020-09-24 | CK Industries, LLC | Pto coupler protector |
| US10837478B2 (en) | 2019-03-19 | 2020-11-17 | CK Industries, LLC | PTO coupler protector |
| CN113803439A (en) * | 2021-09-28 | 2021-12-17 | 重庆綦同汽车配件有限责任公司 | Front power takeoff |
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