JP2012072824A - Planetary gear device - Google Patents

Planetary gear device Download PDF

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Publication number
JP2012072824A
JP2012072824A JP2010217449A JP2010217449A JP2012072824A JP 2012072824 A JP2012072824 A JP 2012072824A JP 2010217449 A JP2010217449 A JP 2010217449A JP 2010217449 A JP2010217449 A JP 2010217449A JP 2012072824 A JP2012072824 A JP 2012072824A
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Prior art keywords
gear
planetary gear
annular member
planetary
internal gear
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Inventor
Masahiro Hirano
正博 平野
Kosaku Ono
耕作 大野
Yasuhiro Iwamoto
安弘 岩本
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Hitachi Nico Transmission Co Ltd
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Hitachi Nico Transmission Co Ltd
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Priority to JP2010217449A priority Critical patent/JP2012072824A/en
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    • 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
    • F16H57/00—General details of gearing
    • F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings
    • 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
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)

Abstract

PROBLEM TO BE SOLVED: To solve problems about vibration and noise due to resonance and a shorter service life due to a dynamic load, in a planetary gear.SOLUTION: A planetary gear device includes: a sun gear; a plurality of planetary gears, disposed in the periphery of the sun gear and meshing with the sun gear; internal gear, coaxial to the sun gear and meshing with the planetary gears; an annular member, fixed on the outer circumference part of the internal gear; and a screw hole, formed on a cylindrical face of the annular member. In the planetary gear device, a groove is formed in a circumference direction on the outer circumference part of the internal gear, a space formed by the groove on the outer circumference part of the internal gear and by the annular member is filled with oil, and the screw hole formed on the cylindrical face of the annular member is sealed with a screw.

Description

本発明は共振時の振動振幅を低減可能な遊星歯車装置に関する。   The present invention relates to a planetary gear device capable of reducing vibration amplitude at resonance.

例えば発電機や給水ポンプ等の産業機械では多くの歯車が組み合わされて構成されている。これらの歯車を使って歯車の減速或いは増速を行うには大小の歯車をさらに追加して組み合わせなくてはならず、結果的に歯車部分だけが大型化してしまうという問題がある。   For example, industrial machines such as generators and feed water pumps are configured by combining many gears. In order to reduce or increase the speed of the gears using these gears, it is necessary to further add and combine large and small gears, resulting in a problem that only the gear portion is enlarged.

そこで近年注目されているのが、特許文献１にも開示されているような遊星歯車装置である。この遊星歯車装置は歯車追加による歯車部分の大型化を抑えることができる。   Therefore, a planetary gear device as disclosed in Patent Document 1 has been attracting attention in recent years. This planetary gear device can suppress an increase in the size of the gear portion due to the addition of gears.

特開平８-１６６０５０号公報JP-A-8-166050

ところが、上記特許文献１に記載された遊星歯車装置の構造では、歯車装置の大型化とかみ合いに起因する振動が歯車箱へ伝播することを軽減することはできるものの、歯車の振動を低減することは困難であり、歯車の信頼性を向上させるには不十分である。   However, in the structure of the planetary gear device described in the above-mentioned Patent Document 1, it is possible to reduce the vibration caused by the enlargement and meshing of the gear device, but to reduce the gear vibration. Is difficult and insufficient to improve the reliability of the gear.

また、内歯車が回転しないプラネタリ型遊星歯車装置には適用可能であるが、内歯車が回転するスター型やソーラ型遊星歯車装置への適用は困難である。そのため、歯車箱のみではなく、歯車の振動を低減し、またプラネタリ型のみではなく、スター型やソーラ型遊星歯車装置にも適用可能な構造が必要である。   Further, it can be applied to a planetary planetary gear device in which the internal gear does not rotate, but it is difficult to apply to a star type or solar type planetary gear device in which the internal gear rotates. Therefore, there is a need for a structure that can reduce not only the gear box but also the gear vibration and can be applied not only to the planetary type but also to a star type or solar type planetary gear device.

本発明の目的は、共振を防止して歯車の振動を低減させることで信頼性を向上させた遊星歯車装置を提供することにある。   An object of the present invention is to provide a planetary gear device that improves reliability by preventing resonance and reducing gear vibration.

上記の目的は、太陽歯車と、この太陽歯車の外周とかみ合う複数個の遊星歯車と、前記太陽歯車と同軸かつ前記遊星歯車とかみ合う内歯車とを備えた遊星歯車装置において、前記内歯車の外周部を一周するように設けられた空間と、この空間に封入された油と、この油の圧力を調整する手段とを備えたことにより達成される。   An object of the present invention is to provide a planetary gear device comprising a sun gear, a plurality of planetary gears meshing with the outer periphery of the sun gear, and an internal gear coaxial with the sun gear and meshing with the planetary gear. This is achieved by including a space provided so as to go around the section, oil sealed in the space, and means for adjusting the pressure of the oil.

前記油を封入した空間は前記内歯車の外周部を周方向に窪ませて形成した溝と、この溝を閉塞する円環部材とによって形成されていることにより達成される。   The space in which the oil is enclosed is achieved by a groove formed by recessing the outer peripheral portion of the internal gear in the circumferential direction and an annular member that closes the groove.

前記油を封入した空間は前記内歯車の外周部を構成する面と、この面を覆う円環部材に形成された溝とによって形成されていることにより達成される。   The space filled with the oil is achieved by being formed by a surface constituting the outer peripheral portion of the internal gear and a groove formed in an annular member covering the surface.

前記油を封入した空間は前記内歯車の外周部に設けられてこの外周部を周方向に窪ませて形成した溝と、前記内歯車の外周部を構成する面を覆う円環部材に形成された溝とによって形成されていることにより達成される。   The oil-sealed space is formed in an annular member that is provided on the outer peripheral portion of the internal gear and that is formed by recessing the outer peripheral portion in the circumferential direction, and an annular member that covers a surface constituting the outer peripheral portion of the internal gear. This is achieved by being formed by the groove.

前記油の圧力を調整する手段は前記円環部材に設けられたネジ穴と、このネジ穴に挿入されたネジの締め込み量によって行うことにより達成される。   The means for adjusting the oil pressure is achieved by a screw hole provided in the annular member and a tightening amount of a screw inserted into the screw hole.

本発明によれば、共振を防止して歯車の振動を低減させることで信頼性を向上させた遊星歯車装置を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, the planetary gear apparatus which improved the reliability by preventing resonance and reducing the vibration of a gearwheel can be provided.

一般的なプラネタリ型遊星歯車装置の一部の構造図である。It is a partial structural diagram of a general planetary planetary gear device. ガスタービン発電施設の全体構成図である。1 is an overall configuration diagram of a gas turbine power generation facility. 本発明の実施例１を備えた遊星歯車装置の分解斜視図及びその組み立て後の斜視図である。It is a disassembled perspective view of the planetary gear apparatus provided with Example 1 of this invention, and the perspective view after the assembly. 図３のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 本発明の実施例２を備えた遊星歯車装置の分解斜視図及びその組み立て後の斜視図である。It is a disassembled perspective view of the planetary gear apparatus provided with Example 2 of this invention, and the perspective view after the assembly. 図５のＢ−Ｂ断面図である。It is BB sectional drawing of FIG.

ところで、本発明の実施例を説明する前に一般的な遊星歯車装置の歯車部分を図１で簡単に説明する。
図１は一般的な遊星歯車装置の斜視図である。
図１において、内歯車３と同軸となった太陽歯車１が内歯車３の内部に収納されている。太陽歯車１の周囲には複数個の遊星歯車２が配置されている。この遊星歯車２の外周に施された歯は太陽歯車１外周の歯と内歯車３の内周に施された歯とにかみ合っている。 By the way, before explaining the embodiment of the present invention, a gear portion of a general planetary gear device will be briefly described with reference to FIG.
FIG. 1 is a perspective view of a general planetary gear device.
In FIG. 1, a sun gear 1 that is coaxial with the internal gear 3 is housed inside the internal gear 3. A plurality of planetary gears 2 are arranged around the sun gear 1. The teeth provided on the outer periphery of the planetary gear 2 mesh with the teeth on the outer periphery of the sun gear 1 and the teeth provided on the inner periphery of the internal gear 3.

このような遊星歯車装置では、例えば太陽歯車１が駆動歯車であった場合、太陽歯車１が回転すると遊星歯車２は太陽歯車１の周囲を自転しながら公転する。一方、内歯車３は遊星歯車の自転と公転によって自転する。   In such a planetary gear device, for example, when the sun gear 1 is a drive gear, when the sun gear 1 rotates, the planetary gear 2 revolves while rotating around the sun gear 1. On the other hand, the internal gear 3 rotates by the rotation and revolution of the planetary gear.

ところが、これらの歯車が動力を伝達する際、歯の剛性の周期的な変化や加工誤差などが原因となって振動が発生する。このとき、加振周波数と固有振動数が一致若しくは近い場合には歯車の振動振幅が増大してしまい、歯車を支持する軸受を介して歯車箱表面を大きく振動させ、騒音を増大させてしまうという問題がある。   However, when these gears transmit power, vibrations occur due to periodic changes in tooth rigidity, machining errors, and the like. At this time, if the excitation frequency and the natural frequency coincide with each other or close to each other, the vibration amplitude of the gear is increased, and the gear box surface is vibrated greatly via the bearing supporting the gear, thereby increasing the noise. There's a problem.

また、この振動によって歯に設計値以上の荷重が加わった場合には歯の折損に至る場合があることから、このような過大な振動は遊星歯車装置の信頼性に大きく関わる。   In addition, when a load greater than the design value is applied to the tooth due to this vibration, the tooth may be broken, and such excessive vibration greatly affects the reliability of the planetary gear device.

このような問題に対し、例えば上述した特許文献１では、内歯車の外周及び側面に弾性部材を設け、これら弾性部材を介して内歯車を歯車箱に固定することによって歯車のかみ合いに起因する振動が歯車箱へ伝播することを防止している。   In order to deal with such a problem, for example, in Patent Document 1 described above, an elastic member is provided on the outer periphery and side surface of the internal gear, and the internal gear is fixed to the gear box via these elastic members, thereby causing vibration caused by the meshing of the gear. Is prevented from propagating to the gearbox.

しかしながら、この構造は弾性部材を取り付けるという極めて特殊な作業工程を要するため、現場での簡単な手作業による対策ができないという問題がある。   However, since this structure requires a very special work process of attaching an elastic member, there is a problem that it is not possible to take measures by simple manual work on site.

そこで、本発明の発明者らは歯車の共振の原因となる固有値を変える作業を現場で簡単にできる構造を種々検討した結果、以下のごとき実施例を得た。   Therefore, the inventors of the present invention have studied various structures that can easily change the eigenvalue causing the resonance of the gear on site, and have obtained the following examples.

なお、図１に示した遊星歯車装置は内歯車１の外周にも歯が形成されているが、以下に説明する実施例では内歯車の外周には歯を設けない構造となっている。また実施例を説明する図３、図５の太陽歯車と遊星歯車と内歯車の歯は省略して記載した。   In the planetary gear device shown in FIG. 1, teeth are formed on the outer periphery of the internal gear 1, but in the embodiment described below, the teeth are not provided on the outer periphery of the internal gear. The sun gear, planetary gear, and internal gear teeth of FIGS. 3 and 5 for explaining the embodiment are omitted.

以下、本発明の一実施例を図にしたがって説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

さて、本実施例では産業用遊星歯車装置が使用されるシステムとして、ガスタービン発電施設を例に説明する。そこで産業用遊星歯車装置を搭載したガスタービン発電装置について図２で簡単説明する。   In this embodiment, a gas turbine power generation facility will be described as an example of a system in which an industrial planetary gear device is used. A gas turbine power generator equipped with an industrial planetary gear unit will be briefly described with reference to FIG.

図２はガスタービン発電施設の全体構成図である。   FIG. 2 is an overall configuration diagram of the gas turbine power generation facility.

図２において、発電機１０はガスタービン９によって回転駆動されており、両者の間にはスター型遊星歯車装置８が設置されている。この遊星歯車装置８を構成する太陽歯車１の太陽歯車軸１１にはガスタービン９が接続されている。太陽歯車１の周囲に施された歯とかみ合うように複数個の遊星歯車２が連結されている。太陽歯車１と回転中心を同じにし、遊星歯車２の外周に施された歯とかみ合う内歯車３が連結されている。この遊星歯車２の遊星歯車軸１２は歯車箱１４に固定されている。この歯車箱１４の内部に太陽歯車１、遊星歯車２、内歯車３の歯車群が収納されて遊星歯車装置８を構成している。   In FIG. 2, the generator 10 is rotationally driven by a gas turbine 9, and a star type planetary gear device 8 is installed between the two. A gas turbine 9 is connected to the sun gear shaft 11 of the sun gear 1 constituting the planetary gear device 8. A plurality of planetary gears 2 are connected so as to mesh with teeth provided around the sun gear 1. An internal gear 3 having the same rotational center as that of the sun gear 1 and meshing with teeth provided on the outer periphery of the planetary gear 2 is connected. The planetary gear shaft 12 of the planetary gear 2 is fixed to a gear box 14. A gear group of the sun gear 1, the planetary gear 2, and the internal gear 3 is housed in the gear box 14 to constitute a planetary gear device 8.

遊星歯車２は遊星歯車軸１２により回転自在に支持されている。また、内歯車３は内歯車軸１３に固定され、この遊星歯車軸１３は軸受（図示せず）によって回転自在に軸支されている。この内歯車軸１３には発電機１０が接続されている。   The planetary gear 2 is rotatably supported by the planetary gear shaft 12. The internal gear 3 is fixed to an internal gear shaft 13, and the planetary gear shaft 13 is rotatably supported by a bearing (not shown). The generator 10 is connected to the internal gear shaft 13.

以上の構成において、ガスタービン９を回転させると、太陽歯車軸１１、太陽歯車１、遊星歯車２、内歯車３、内歯車軸１３、発電機１０、の順に回転駆動され、ガスタービン９の回転が減速されて発電機１０を駆動するようになっている。   In the above configuration, when the gas turbine 9 is rotated, the sun gear shaft 11, the sun gear 1, the planetary gear 2, the internal gear 3, the internal gear shaft 13, and the generator 10 are rotationally driven in this order to rotate the gas turbine 9. Is decelerated to drive the generator 10.

次に本実施例の遊星歯車装置について図３と図４を使って説明する。
図３（ａ）は本発明の実施例１を備えた遊星歯車装置の分解斜視図である。
図３（ｂ）はその組み立て後の斜視図である。
図４は図３のＡ−Ａ断面図である。
図１に示したように、中心に設けられた太陽歯車１の周囲に配置された複数個の遊星歯車２が太陽歯車１とかみ合うように配置されている。太陽歯車１と中心を同じにした内歯車３は遊星歯車２とかみ合うように配置されている。 Next, the planetary gear device of this embodiment will be described with reference to FIGS.
FIG. 3A is an exploded perspective view of the planetary gear device provided with the first embodiment of the present invention.
FIG. 3B is a perspective view after the assembly.
4 is a cross-sectional view taken along the line AA in FIG.
As shown in FIG. 1, a plurality of planetary gears 2 arranged around a sun gear 1 provided at the center are arranged so as to mesh with the sun gear 1. An internal gear 3 having the same center as that of the sun gear 1 is arranged so as to mesh with the planetary gear 2.

本実施例では図３、図４に示すように、内歯車３の外周部にリング状の円環部材４が固定され、円環部材４の円筒面にはネジ穴５が設けられている。また、内歯車３の外周部には周方向に窪ませて形成された溝６が設けられており、この溝６と円環部材４の内周部とで形成される空間には油１５が満たされてネジ穴５をネジ５ａで封止している。   In this embodiment, as shown in FIGS. 3 and 4, a ring-shaped annular member 4 is fixed to the outer peripheral portion of the internal gear 3, and a screw hole 5 is provided on the cylindrical surface of the annular member 4. Further, a groove 6 formed by being recessed in the circumferential direction is provided on the outer peripheral portion of the internal gear 3, and oil 15 is placed in a space formed by the groove 6 and the inner peripheral portion of the annular member 4. The screw hole 5 is filled and sealed with a screw 5a.

換言すると、内歯車３の外周に溝６が形成され、この溝６をリング状の円環部材４で閉塞して空間を形成したものである。円環部材４にはネジ穴５が複数設けられ、このネジ穴５にはネジ５ａが取り付けられている。   In other words, the groove 6 is formed on the outer periphery of the internal gear 3, and the groove 6 is closed by the ring-shaped annular member 4 to form a space. A plurality of screw holes 5 are provided in the annular member 4, and screws 5 a are attached to the screw holes 5.

なお、溝６内には油１５封入されるが、この油１５はネジ穴５から封入することができる。   In addition, although oil 15 is sealed in the groove 6, this oil 15 can be sealed from the screw hole 5.

つまり、遊星歯車装置に共振が発生した場合、装置を停止した後、ネジ穴５を封止しているネジ５ａの締め込み量を調整することにより、溝６と円環部材４の内周部で形成される空間を満たされた油１５の圧力を調整することができる。これにより、内歯車３外周部から内歯車３に作用する径方向の圧力が変化し、これに伴い遊星歯車機構の固有振動数が変化するため、共振を回避することができる。   That is, when resonance occurs in the planetary gear device, the inner periphery of the groove 6 and the annular member 4 is adjusted by adjusting the tightening amount of the screw 5a sealing the screw hole 5 after stopping the device. The pressure of the oil 15 filled in the space formed by can be adjusted. As a result, the radial pressure acting on the internal gear 3 from the outer peripheral portion of the internal gear 3 changes, and the natural frequency of the planetary gear mechanism changes accordingly, so that resonance can be avoided.

図５（ａ）は本発明の実施例２を備えた遊星歯車装置の分解斜視図である。
図５（ｂ）はその組み立て後の斜視図である。
図６は図５のＢ−Ｂ断面図である。
図５、図６において、上記実施例１では図３、図４に示すように内歯車３の外周部に溝６が設けられているが、図５、図６では円環部材４の内周部に溝７を設けたものである。このとき、内歯車３の外周部と溝７とで形成される空間を油で満たし、ネジ穴５をネジ５ａで封止している。 FIG. 5A is an exploded perspective view of the planetary gear device provided with the second embodiment of the present invention.
FIG. 5B is a perspective view after the assembly.
6 is a cross-sectional view taken along line BB in FIG.
5 and 6, in the first embodiment, the groove 6 is provided in the outer peripheral portion of the internal gear 3 as shown in FIGS. 3 and 4. In FIGS. 5 and 6, the inner periphery of the annular member 4 is provided. A groove 7 is provided in the part. At this time, the space formed by the outer peripheral portion of the internal gear 3 and the groove 7 is filled with oil, and the screw holes 5 are sealed with screws 5a.

そして、共振が発生した場合、実施例１と同様にネジ穴５を封止しているネジ５ａの締め込み量を調整することにより、遊星歯車機構の固有振動数が変化するため、共振を回避することができる。   When resonance occurs, the natural frequency of the planetary gear mechanism changes by adjusting the tightening amount of the screw 5a that seals the screw hole 5 as in the first embodiment, so that resonance is avoided. can do.

なお、実施例１では内歯車３の外周部に設けた溝６と円環部材４の内周部とで形成される空間を油で満たしたが、実施例２では、内歯車３の外周部と円環部材４の内側に設けられた溝７とで形成される空間を油で満たした。したがって、内歯車３の外周部と円環部材４の内周部にそれぞれ溝を設け、これら２つの溝で形成される空間を油で満たし、上記実施例１、及び２と同様に、ネジ穴５をネジ５ａで封止してもよい。   In the first embodiment, the space formed by the groove 6 provided in the outer peripheral portion of the internal gear 3 and the inner peripheral portion of the annular member 4 is filled with oil, but in the second embodiment, the outer peripheral portion of the internal gear 3 is filled. And a groove formed by the groove 7 provided inside the annular member 4 was filled with oil. Therefore, a groove is provided in each of the outer peripheral portion of the internal gear 3 and the inner peripheral portion of the annular member 4, and the space formed by these two grooves is filled with oil. As in the first and second embodiments, the screw hole 5 may be sealed with a screw 5a.

そして、共振が発生した場合、上記実施例１及び２と同様に、ネジ穴５を封止しているネジ５ａの締め込み量を調整することにより遊星歯車機構の固有振動数が変化するため、共振を回避することができる。   When resonance occurs, the natural frequency of the planetary gear mechanism changes by adjusting the tightening amount of the screw 5a sealing the screw hole 5 as in the first and second embodiments. Resonance can be avoided.

また、上記実施例１及び実施例２では、ガスタービン発電設備におけるスター型遊星歯車装置について述べたが、その他種々の設備におけるスター型、プラネタリ型、及びソーラ型遊星歯車装置への適用も可能である。   In the first and second embodiments, the star type planetary gear device in the gas turbine power generation facility has been described. However, the star type planetary gear device in various other facilities can also be applied to the star type planetary gear device. is there.

本発明は以上のごとく、遊星歯車機構に共振が発生した場合、装置を停止した後、円環部材の円筒面に設けたネジ穴を封止したネジの締め込み量を調整し、内歯車外周部に設けた溝と円環部材によって形成される空間を満たす油の圧力を調整することができる。これにより、内歯車の径方向の拘束力を調整し、内歯車を含む遊星歯車機構の固有振動数を変化させることにより、共振を回避し振動振幅を小さくすることができるので振動を低減した高い信頼性を有する遊星歯車装置を提供できる。   As described above, according to the present invention, when resonance occurs in the planetary gear mechanism, after stopping the device, the tightening amount of the screw sealing the screw hole provided in the cylindrical surface of the annular member is adjusted to The pressure of the oil filling the space formed by the groove and the annular member provided in the part can be adjusted. As a result, by adjusting the radial restraint force of the internal gear and changing the natural frequency of the planetary gear mechanism including the internal gear, resonance can be avoided and the vibration amplitude can be reduced, thus reducing vibration. A planetary gear device having reliability can be provided.

１…太陽歯車、２…遊星歯車、３…内歯車、４…円環部材、５…ネジ穴、５ａ…ネジ、６…内歯車外周部溝、７…円環部材内周部溝、８…遊星歯車装置、９…ガスタービン、１０…発電機、１１…太陽歯車軸、１２…遊星歯車軸、１３…内歯車軸、１４…歯車箱。   DESCRIPTION OF SYMBOLS 1 ... Sun gear, 2 ... Planetary gear, 3 ... Internal gear, 4 ... Ring member, 5 ... Screw hole, 5a ... Screw, 6 ... Internal gear outer peripheral groove, 7 ... Ring member inner peripheral groove, 8 ... Planetary gear unit, 9 ... gas turbine, 10 ... generator, 11 ... sun gear shaft, 12 ... planetary gear shaft, 13 ... internal gear shaft, 14 ... gear box.

Claims (5)

太陽歯車と、この太陽歯車の外周とかみ合う複数個の遊星歯車と、前記太陽歯車と同軸かつ前記遊星歯車とかみ合う内歯車とを備えた遊星歯車装置において、
前記内歯車の外周部を一周するように設けられた空間と、この空間に封入された油と、この油の圧力を調整する手段とを備えたことを特徴とする遊星歯車装置。 In a planetary gear device comprising a sun gear, a plurality of planetary gears that mesh with the outer periphery of the sun gear, and an internal gear that is coaxial with the sun gear and meshes with the planetary gear,
A planetary gear device comprising: a space provided so as to go around the outer peripheral portion of the internal gear; oil sealed in the space; and means for adjusting the pressure of the oil. 請求項１記載の遊星歯車装置において、
前記油を封入した空間は前記内歯車の外周部を周方向に窪ませて形成した溝と、この溝を閉塞する円環部材とによって形成されていることを特徴とする遊星歯車装置。 The planetary gear set according to claim 1, wherein
A space in which the oil is enclosed is formed by a groove formed by recessing an outer peripheral portion of the internal gear in a circumferential direction, and an annular member that closes the groove. 請求項１記載の遊星歯車装置において、
前記油を封入した空間は前記内歯車の外周部を構成する面と、この面を覆う円環部材に形成された溝とによって形成されていることを特徴とする遊星歯車装置。 The planetary gear set according to claim 1, wherein
The space in which the oil is enclosed is formed by a surface constituting the outer peripheral portion of the internal gear and a groove formed in an annular member covering the surface. 請求項１記載の遊星歯車装置において、
前記油を封入した空間は前記内歯車の外周部に設けられてこの外周部を周方向に窪ませて形成した溝と、前記内歯車の外周部を構成する面を覆う円環部材に形成された溝とによって形成されていることを特徴とする遊星歯車装置。 The planetary gear set according to claim 1, wherein
The oil-sealed space is formed in an annular member that is provided on the outer peripheral portion of the internal gear and that is formed by recessing the outer peripheral portion in the circumferential direction, and an annular member that covers a surface constituting the outer peripheral portion of the internal gear. A planetary gear device characterized by being formed by a groove. 請求項１記載の遊星歯車装置において、
前記油の圧力を調整する手段は前記円環部材に設けられたネジ穴と、このネジ穴に挿入されたネジの締め込み量によって行うことを特徴とする遊星歯車装置。 The planetary gear set according to claim 1, wherein
The planetary gear device characterized in that the means for adjusting the pressure of the oil is performed by a screw hole provided in the annular member and a tightening amount of a screw inserted into the screw hole.
JP2010217449A 2010-09-28 2010-09-28 Planetary gear device Pending JP2012072824A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017190820A (en) * 2016-04-13 2017-10-19 トヨタ自動車株式会社 Torsional vibration reduction device

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Publication number Priority date Publication date Assignee Title
JPH0514718U (en) * 1991-08-09 1993-02-26 株式会社クボタ Noise reduction device for engine timing transmission gear unit
JPH0525022U (en) * 1991-09-11 1993-04-02 エヌ・オー・ケー・メグラステイツク株式会社 Center bearing support
JPH07243482A (en) * 1994-03-01 1995-09-19 N O K Megurasuteitsuku Kk Damper
JP2009222116A (en) * 2008-03-14 2009-10-01 Yaskawa Electric Corp Planetary gear device, actuator incorporating the same, and robot device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0514718U (en) * 1991-08-09 1993-02-26 株式会社クボタ Noise reduction device for engine timing transmission gear unit
JPH0525022U (en) * 1991-09-11 1993-04-02 エヌ・オー・ケー・メグラステイツク株式会社 Center bearing support
JPH07243482A (en) * 1994-03-01 1995-09-19 N O K Megurasuteitsuku Kk Damper
JP2009222116A (en) * 2008-03-14 2009-10-01 Yaskawa Electric Corp Planetary gear device, actuator incorporating the same, and robot device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017190820A (en) * 2016-04-13 2017-10-19 トヨタ自動車株式会社 Torsional vibration reduction device

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