JPS6040931Y2 - planetary gear reducer - Google Patents

Description

【考案の詳細な説明】 本案は農業用機械その他の原動機付機械において、原動
機の出力側に設ける変速機構付の減速機、特に惑星歯車
式の減速機に関する。[Detailed Description of the Invention] The present invention relates to a reduction gear with a speed change mechanism provided on the output side of a motor, particularly a planetary gear type reduction gear, in agricultural machinery and other motorized machinery.

従来惑星歯車減速機として、原動軸と従動軸とを上下同
一軸線上に配置し、その従動軸と一体の支持枠に数個の
惑星歯車を軸支し、その惑星歯車を、原動軸と一体の太
陽歯車と、回転可能な内歯外輪との間に同時噛合させ、
その内歯外輪に対する制動機構を備えることにより、原
動軸の回転を減速して従動軸に伝え、且つその動力の伝
達を任意に断続できる構成のものは提案されている。Conventional planetary gear reducers have a driving shaft and a driven shaft arranged vertically on the same axial line, several planetary gears are pivotally supported on a support frame integrated with the driven shaft, and the planetary gears are integrated with the driving shaft. Simultaneous meshing between the sun gear and the rotatable inner gear outer ring,
A structure has been proposed in which the rotation of the driving shaft is decelerated and transmitted to the driven shaft by providing a braking mechanism for the inner toothed outer ring, and the transmission of the power can be interrupted or interrupted at will.

上記減速機はケースに収容してその中に潤滑油を溜める
が、その規準油面は惑星歯車と内歯外輪とのかみ合い部
分を浸し、その上方の内歯外輪と制動機構との接触部分
には飛沫がかかる程度にするのが一搬である。The above reduction gear is housed in a case and stores lubricating oil therein, and the standard oil level soaks the meshing area between the planetary gear and the inner toothed outer ring, and the contact area between the inner toothed outer ring and the braking mechanism above it. The first step is to keep it at a level where it can be sprayed.

ところが内歯外輪をその周縁の外側に沿ってケース内に
設けた突縁により心合せして回転可能に支持しているた
め、惑星歯車の自転、公転成いは機体の揺動によって飛
散する油が内歯外輪とケースとの間に溜ることがある。However, because the inner toothed outer ring is aligned and rotatably supported by a ridge provided inside the case along the outside of its periphery, oil splashed by the planetary gear's rotation, revolution, or swinging of the aircraft body. may accumulate between the inner tooth outer ring and the case.

そうすると上記すきまに溜った油の粘性、内歯外輪と支
持突縁の摩擦等によって内歯外輪を回転させるトルクが
大きくなり、そのトルクが惑星歯車の自転トルクよりも
大きくなると、内歯外輪は自由にしておいても停止して
しまう。Then, the torque that rotates the inner gear outer ring increases due to the viscosity of the oil accumulated in the above clearance, the friction between the inner gear outer ring and the supporting flange, etc., and when that torque becomes larger than the rotational torque of the planetary gear, the inner gear outer ring becomes free. Even if I turn it on, it stops.

従って惑星歯車は公転する。Therefore, the planetary gear revolves.

即ち内歯外輪に対する制動操作をしていないのに従動軸
が回り出す、所謂つき回り現象を発生する。In other words, a so-called spinning phenomenon occurs in which the driven shaft starts rotating even though no braking operation is performed on the inner toothed outer ring.

本案は上記の点に鑑み、惑星歯車のつき回りを防止した
惑星歯車減速機を提供することを目的とするもので、以
下図面について本案減速機の構造を説明する。In view of the above points, the purpose of the present invention is to provide a planetary gear reducer that prevents the planetary gear from turning around.The structure of the present invention will be explained below with reference to the drawings.

１．２は上下同一軸線上に配置された原動軸及び従動軸
、３はその従動軸２と一体に回転する支持枠にして、そ
の支持枠３の同一円周上の点対称位置に数個の惑星歯車
４が軸５（支持枠３に固定）によって回転自由に取付け
られている。1. 2 is a driving shaft and a driven shaft arranged on the same vertical axis, 3 is a support frame that rotates together with the driven shaft 2, and several shafts are placed at symmetrical positions on the same circumference of the support frame 3. A planetary gear 4 is rotatably attached to the shaft 5 (fixed to the support frame 3).

その惑星歯車４は大小の歯車４１．４２を一体化した段
歯車に形成されている。The planetary gear 4 is formed into a stepped gear that integrates large and small gears 41 and 42.

惑星歯車４の外方に大小２個の内歯外輪６，７が同心状
に回転可能に配置されていて、惑星歯車の大径側の歯車
４１を、原動軸１と一体の太陽歯車８と大径内歯外輪６
との間に同時噛合させ、又惑星歯車の小径側の歯車４２
を小径内歯外輪７に噛合させている。Two large and small internally toothed outer rings 6 and 7 are rotatably arranged concentrically outside the planetary gear 4, and the gear 41 on the large diameter side of the planetary gear is connected to the sun gear 8, which is integrated with the driving shaft 1. Large diameter internal tooth outer ring 6
and gear 42 on the small diameter side of the planetary gear.
is meshed with the small diameter inner tooth outer ring 7.

以上の機構はケース９の中に収容されていて、大径内歯
外輪６は、その周縁に沿ってケース９に設けた支持突部
１０，１１，１２によって心合せと上下方向の位置決め
をしている。The above mechanism is housed in a case 9, and the large-diameter inner toothed outer ring 6 is aligned and vertically positioned by support protrusions 10, 11, and 12 provided on the case 9 along its periphery. ing.

又小径内歯外輪７は、その周縁に沿ってケース９に設け
た支持突部１３によって心合せすると共に、惑星歯車４
の円盤面とその取付軸５の上端面に取付けた座金１４と
にはさまれて上下方向の位置決めをしている。Further, the small-diameter internal toothed outer ring 7 is aligned by a support protrusion 13 provided on the case 9 along its periphery, and the planetary gear 4
It is sandwiched between the disc surface of the mounting shaft 5 and a washer 14 attached to the upper end surface of the mounting shaft 5 for vertical positioning.

大径内歯外輪６のドラム部６１と小径内歯外輪７のドラ
ム部７１との間に、大径内歯外輪６に内拡式ブレーキと
して、又小径内歯外陰７に外圧式ブレーキとして夫々選
択的に作動させる一対のシュー１５．１５を備えている
。Between the drum part 61 of the large-diameter internal tooth outer ring 6 and the drum part 71 of the small-diameter internal tooth outer ring 7, an internal expansion type brake is installed on the large-diameter internal tooth outer ring 6, and an external pressure type brake is installed on the small-diameter internal tooth external ring 7. A pair of selectively actuated shoes 15.15 are provided.

１６はシュー１５．１５のアンカーピン、１７はシュー
制御カム、１８はカム操作軸、１９はカム操作軸１８の
軸方向操作に節度を与えるクリック止め用のボールであ
る。16 is an anchor pin of the shoe 15.15, 17 is a shoe control cam, 18 is a cam operating shaft, and 19 is a click stopper ball for moderating the axial operation of the cam operating shaft 18.

潤滑油０はシュー１５．１５が浸らないところまで入っ
ている。Lubricating oil 0 is filled to the point where shoes 15 and 15 are not submerged.

本案は上記の構成の減速機において、内歯外輪６とケー
ス９の内周面との間に潤滑油の流動を許容できる間隙Ｓ
を形威し、その内歯外輪６を支持する支持突部１０，１
１．１２を部分的に設けたことを要旨とする。The present invention provides a reduction gear having the above configuration, with a gap S between the inner toothed outer ring 6 and the inner circumferential surface of the case 9 that allows the flow of lubricating oil.
Support protrusions 10 and 1 that support the inner toothed outer ring 6
The gist is that 1.12 was partially provided.

本案減速機の作動を説明すると、シュー１５゜１５が中
立位置にあって内外の内歯外輪６，７が制動されない状
態では、原動軸１に伴う太陽歯車８の回転は、惑星歯車
４，４１．４２を介して内歯外輪６，７を回転させるの
みで従動軸２には伝わらない。To explain the operation of the present reduction gear, when the shoes 15° 15 are in the neutral position and the inner and outer toothed outer rings 6 and 7 are not braked, the rotation of the sun gear 8 accompanying the driving shaft 1 is caused by the rotation of the planetary gears 4 and 41. It only rotates the inner toothed outer rings 6, 7 via the .42 and is not transmitted to the driven shaft 2.

カム操作軸１８を、図の位置で右に回すとカム１７とシ
ュー１５．１５との係合により、シュー１５．１５は共
に内側に寄せられて小径内歯外輪７を制動停止させる。When the cam operating shaft 18 is turned to the right at the position shown in the figure, the cam 17 and the shoe 15.15 engage with each other, and the shoes 15.15 are both moved inward to stop the small-diameter internal toothed outer ring 7 by braking.

そうすると惑星歯車４は小径内歯外輪７に沿って自転し
つつ公転し、その公転によって従動軸２を回転させる。Then, the planetary gear 4 revolves while rotating along the small-diameter internal toothed outer ring 7, and the driven shaft 2 is rotated by the revolution.

カム操作軸１８を引上げた位置で上記同様に右に回すと
、カム１７とシュー１５．１５の係合組合せが変ってシ
ュー１５．１５は広がり、大径内歯外輪６に押付けられ
てその外輪６を停止させる。When the cam operating shaft 18 is turned to the right in the same way as above in the pulled up position, the engagement combination between the cam 17 and the shoe 15.15 changes, and the shoe 15.15 widens and is pressed against the large-diameter inner toothed outer ring 6, causing its outer ring to tighten. Stop 6.

この場合惑星歯車４は大径内歯外輪６に沿って自転且つ
公転して従動軸２を、小径内歯外輪７を止めた場合より
も高速で回転させる。In this case, the planetary gear 4 rotates and revolves around the large diameter internally toothed outer ring 6, causing the driven shaft 2 to rotate at a higher speed than when the small diameter internally toothed outer ring 7 is stopped.

太陽歯車８．惑星歯車４等の回転によってケース内の上
方に飛び散る油が小径内歯外輪７とその支持突部１３と
の接触面、及びシュー１５．１５と大小の内歯外輪６，
７との接触面を濡らす。Sun gear8. Oil splashed upwards inside the case due to the rotation of the planetary gear 4, etc., hits the contact surface between the small-diameter internal toothed outer ring 7 and its support protrusion 13, and the shoe 15, 15 and the large and small internal toothed outer rings 6,
Wet the contact surface with 7.

ケース９内で飛散する油の一部、或は機体の揺れや傾斜
で油がケース９と内歯外輪６の間隙Ｓに入ることがある
けれども、本案は前記のように、その間隙Ｓを油が自由
に流動できるように大きくし、又内歯外輪６を支持する
突部１０，１１，１２は部分的に設けたから、間隙Ｓと
その内方の油溜り部とは常に連通していて、間隙Ｓに入
った油は直ちに油溜り部にもどってくる。Although some of the oil that scatters inside the case 9 or oil may enter the gap S between the case 9 and the inner toothed outer ring 6 due to the shaking or tilting of the aircraft, in this case, as described above, the gap S is filled with oil. Since the protrusions 10, 11, and 12 supporting the inner toothed outer ring 6 are partially provided, the gap S and the oil reservoir inside thereof are always in communication. The oil that has entered the gap S immediately returns to the oil reservoir.

即ち間隙Ｓの中に油が溜らないと共に、内歯外輪６とそ
の支持突部１０，１１．１２等との摩擦が減って惑星歯
車４のつき回りを防ぐことができるもので、動力を確実
に断続する効果がある。That is, oil does not accumulate in the gap S, and the friction between the inner toothed outer ring 6 and its supporting protrusions 10, 11, 12, etc. is reduced, and the planetary gear 4 can be prevented from turning around, thereby ensuring power. has an intermittent effect.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本案減速機の縦断正面図、第２図は横断平面図
。 １は原動軸、２は従動軸、３は支持枠、４は惑星段歯車
、６は大径内歯外輪、７は小径内歯外輪、８は太陽歯車
、９は減速機ケース、１０，１１．１２は大径内歯外輪
支持突部、１３は小径内歯外輪支持突部、１４は座金、
１５，１５はシュー、１６はシューアンカーピン、１７
はシュー制御カム、１８はカム操作軸、０は潤滑油、Ｓ
は間隙。Fig. 1 is a longitudinal sectional front view of the proposed reduction gear, and Fig. 2 is a transverse plan view. 1 is a driving shaft, 2 is a driven shaft, 3 is a support frame, 4 is a planetary stage gear, 6 is a large diameter inner gear outer ring, 7 is a small diameter inner gear outer ring, 8 is a sun gear, 9 is a reducer case, 10, 11 .12 is a large diameter internal tooth outer ring support protrusion, 13 is a small diameter internal tooth outer ring support protrusion, 14 is a washer,
15, 15 is a shoe, 16 is a shoe anchor pin, 17
is the shoe control cam, 18 is the cam operating shaft, 0 is the lubricating oil, S
is a gap.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 原動軸と従動軸とを上下同一軸線上に配置し、その従動
軸と一体の支持枠に数個の惑星歯車を軸支し、その惑星
歯車を、原動軸と一体の太陽歯車と、回転可能な内歯外
輪との間に同時噛合させ、その内歯外輪に対する制動機
構を備えた惑星歯車減速機を構成上、上記減速機を収容
したケースの中に潤滑油を溜めたものにおいて、内歯外
輪とケース内周面との間に潤滑油の流動を許容する間隙
を形成腰内歯外輪をケースに部分的に設けた支持突部で
支持した惑星歯車減速機。A driving shaft and a driven shaft are placed on the same axis above and below, several planetary gears are pivotally supported on a support frame that is integrated with the driven shaft, and the planetary gears can be rotated with a sun gear that is integrated with the driving shaft. The structure of the planetary gear reducer has a braking mechanism for the internal teeth and the outer ring, and the inner teeth are simultaneously engaged with the outer ring. A planetary gear reducer in which a gap is formed between the outer ring and the inner circumferential surface of the case to allow the flow of lubricating oil, and the outer ring with inner teeth is supported by a support protrusion partially provided in the case.