JPH0667949U - Planetary gear support structure in planetary gear system - Google Patents
Planetary gear support structure in planetary gear systemInfo
- Publication number
- JPH0667949U JPH0667949U JP1301293U JP1301293U JPH0667949U JP H0667949 U JPH0667949 U JP H0667949U JP 1301293 U JP1301293 U JP 1301293U JP 1301293 U JP1301293 U JP 1301293U JP H0667949 U JPH0667949 U JP H0667949U
- Authority
- JP
- Japan
- Prior art keywords
- planetary gear
- gear
- support shaft
- shaft
- sun gear
- 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
Landscapes
- Retarders (AREA)
- General Details Of Gearings (AREA)
Abstract
(57)【要約】
【目的】 遊星歯車支持軸に製作上の誤差がある場合の
異常摩耗を防止する。
【構成】 太陽歯車およびその周囲に内歯歯車を有し、
上記太陽歯車の軸心線について回転自在に支持されたキ
ヤリアに支持軸を突設し、該支持軸にベアリングを介し
て支持された遊星歯車を上記太陽歯車および内歯歯車に
かみ合わせた遊星歯車装置において、上記支持軸のベア
リング外周と遊星歯車の軸孔内周との間に、弾性を有す
るブッシュを嵌合した、遊星歯車装置における遊星歯車
支持構造。
(57) [Summary] [Purpose] To prevent abnormal wear when there is a manufacturing error in the planetary gear support shaft. [Structure] A sun gear and an internal gear around it,
A planetary gear device in which a carrier shaft is provided in a projecting manner on a carrier rotatably supported about the axis of the sun gear, and a planetary gear supported by a bearing on the support shaft is engaged with the sun gear and the internal gear. In the planetary gear support structure, a bush having elasticity is fitted between the outer periphery of the bearing of the support shaft and the inner periphery of the shaft hole of the planetary gear.
Description
【０００１】[0001]
本考案は、遊星歯車装置において遊星歯車を支持軸に回転自在に支承させる支 持構造に関する。 The present invention relates to a support structure for rotatably supporting a planetary gear on a support shaft in a planetary gear device.
【０００２】[0002]
従来、例えば、掘削機の駆動部において、モータと接続された原動軸に太陽歯 車を固着すると共に、その周囲に内歯歯車を固定し、一方、従動軸に固定された キヤリアに支持軸を突設し、該支持軸にベアリングを介して回転自在に支持され た遊星歯車を上記太陽歯車および内歯歯車にかみ合わせた遊星歯車減速装置が使 用されているが、上記遊星歯車の支持軸に真円度の誤差、軸心のずれ等の製作上 の誤差がわずかでもあると、遊星歯車の自転および公転に振れや偏差が生じ、そ の結果遊星歯車と内歯歯車および太陽歯車とのかみ合いに異常な摩耗を発生させ る。 Conventionally, for example, in a drive unit of an excavator, a sun gear is fixed to a drive shaft connected to a motor, and an internal gear is fixed around the drive shaft, while a support shaft is attached to a carrier fixed to a driven shaft. A planetary gear speed reducer is used in which a planetary gear, which is projected and is rotatably supported by a bearing on the support shaft, is meshed with the sun gear and the internal gear. If there are slight manufacturing errors such as roundness error and shaft center deviation, runout and revolution of the planetary gear will cause runout and deviation, and as a result, the planetary gear meshes with the internal gear and sun gear. It causes abnormal wear.
【０００３】 その対策として、従来は、上記支持軸と遊星歯車の軸孔との間にわずかの間隙 をもたせ、該間隙内に潤滑油を注入して遊星歯車の軸支にわずかながら融通性を もたせた方法が行われたが、さほどの効果は期待できなかった。As a countermeasure against this, conventionally, a slight gap is provided between the support shaft and the shaft hole of the planetary gear, and lubricating oil is injected into the gap to provide a slight flexibility to the shaft support of the planetary gear. The method that was given was carried out, but the effect was not expected so much.
【０００４】[0004]
本考案は、支持軸に製作上の誤差があっても、遊星歯車と内歯歯車および太陽 歯車とのかみ合いから生じる異常摩耗を防止することを課題とする。 It is an object of the present invention to prevent abnormal wear caused by meshing of a planetary gear with an internal gear and a sun gear even if there is a manufacturing error in the support shaft.
【０００５】[0005]
上記課題解決の手段として、本考案は、 太陽歯車およびその周囲に内歯歯車を有し、上記太陽歯車の軸心線について回 転自在に支持されたキヤリアに支持軸を突設し、該支持軸にベアリングを介して 支持された遊星歯車を上記太陽歯車および内歯歯車にかみ合わせた遊星歯車装置 において、 上記支持軸のベアリング外周と遊星歯車の軸孔内周との間に、弾性を有するブ ッシュを嵌合した、 遊星歯車装置における遊星歯車支持構造を提案する。 以下図面を参照して本考案の実施例について説明する。 As a means for solving the above problems, the present invention has a sun gear and an internal gear around the sun gear, and a support shaft is provided so as to project from a carrier rotatably supported about the axis of the sun gear. In a planetary gear device in which a planetary gear supported by a shaft via bearings is meshed with the sun gear and the internal gear, a resilient block is provided between the outer periphery of the bearing of the support shaft and the inner periphery of the shaft hole of the planetary gear. We propose a planetary gear support structure in a planetary gear unit in which a shoe is fitted. An embodiment of the present invention will be described below with reference to the drawings.
【０００６】[0006]
図１は、２段減速型の遊星歯車減速機で、ケース（１）の上面に接続されたモ ータ（２）の駆動軸（３）に、第１段の太陽歯車（４）を固着された原動軸（５ ）を回転伝達可能に接続すると共に、該太陽歯車（４）の外側に、環状の第１段 内歯歯車（６）をケース（１）内側面において固定し、一方、ケース（１）の下 部に従動軸（１１）をベアリング（１２）、（１３）を介して回転自在に支承さ せ、該従動軸（１１）の上端に突設された軸（８）に第１段の円板状キヤリア（ ７）を回転自在に支持させ、該キヤリア（７）の偏心位置に突設された支持軸（ ９）に第１段遊星歯車（１０）を回転自在に支持させ、この遊星歯車（１０）を 上記太陽歯車（４）と内歯歯車（６）とにかみ合わせ、それにより上記原動軸（ ５）の回転が減速されて上記キヤリア（７）に伝達される第１段減速機構が構成 され、、次に、上記キヤリア（７）の下部に第２段の太陽歯車（４ａ）を一体に 形成すると共に、該太陽歯車（４ａ）の外側に第２段内歯歯車（６ａ）を固定し 、一方、上記従動軸（１１）の上端部に第２段キヤリア（７ａ）を一体に形成し 、該キヤリア（７ａ）の偏心位置に突設された支持軸（９ａ）に第２段遊星歯車 （１０ａ）を回転自在に支持させ、この遊星歯車（１０ａ）を上記太陽歯車（４ ａ）と内歯歯車（６ａ）とにかみ合わせ、それにより上記第１段キヤリア（７） に伝達される減速回転がさらに減速されて第２段キヤリア（７ａ）すなわち従動 軸（１１）に伝達される第２段減速機構が構成され、このような減速機における 上記第１段および第２段の遊星歯車（１０）、（１０ａ）が本考案支持構造によ り支持されている。 FIG. 1 is a two-stage reduction type planetary gear reducer, in which the first stage sun gear (4) is fixed to the drive shaft (3) of the motor (2) connected to the upper surface of the case (1). The drive shaft (5) is connected so that rotation can be transmitted, and an annular first-stage internal gear (6) is fixed to the outside of the sun gear (4) on the inner surface of the case (1). The driven shaft (11) at the lower part of the case (1) is rotatably supported via bearings (12) and (13), and is mounted on the shaft (8) protruding from the upper end of the driven shaft (11). The first stage disk-shaped carrier (7) is rotatably supported, and the first stage planetary gear (10) is rotatably supported on a support shaft (9) projecting at an eccentric position of the carrier (7). Then, the planetary gear (10) is meshed with the sun gear (4) and the internal gear (6), whereby the rotation of the driving shaft (5) is reduced. A first-stage speed reduction mechanism that is transmitted to the carrier (7) is configured. Next, a second-stage sun gear (4a) is integrally formed under the carrier (7) and the sun A second stage internal gear (6a) is fixed to the outside of the gear (4a), while a second stage carrier (7a) is integrally formed at the upper end of the driven shaft (11), and the carrier (7a) is formed. The second stage planetary gear (10a) is rotatably supported by the support shaft (9a) protruding from the eccentric position of the sun gear (4a) and the internal gear (6a). The second stage reduction mechanism is configured so that the decelerated rotation transmitted to the first stage carrier (7) is further reduced and transmitted to the second stage carrier (7a), that is, the driven shaft (11). , The above-mentioned first and second stage play in such a speed reducer Wheel (10), (10a) is supported Ri by the present invention the support structure.
【０００７】 第１段遊星歯車（１０）の支持構造について説明する。図２において、遊星歯 車（１０）の軸孔（１４）の内径を、ベアリングおよび後述のブッシュを挿入で きる大きさに予め設計しておく。上記支持軸（９）には、本例ではローラベアリ ング（１６）を被嵌し、その外側に上記遊星歯車（１０）を軸孔（１４）を介し て装着し、この遊星歯車の軸孔（１４）内周と、上記ベアリング（１６）の円筒 状外レース（１７）との間に、ナイロン系、シリコン系、ポリカーボネート系等 の合成樹脂または合成ゴムからなる弾性を有する円筒状ブッシュ（１８）を嵌入 してある。（１９）、（１９）はカラー、（２０）はストップリングである。The support structure of the first stage planetary gear (10) will be described. In FIG. 2, the inner diameter of the shaft hole (14) of the planetary gear (10) is designed in advance so that the bearing and a bush described later can be inserted. In this example, a roller bearing (16) is fitted on the support shaft (9), and the planet gear (10) is mounted on the outer side of the support shaft (9) through a shaft hole (14). 14) An elastic cylindrical bush (18) made of a synthetic resin or synthetic rubber such as nylon, silicon, or polycarbonate between the inner circumference and the cylindrical outer race (17) of the bearing (16). Has been inserted. (19) and (19) are collars, and (20) is a stop ring.
【０００８】 今、上記支持軸（９）にわずかの真円度の誤差、軸心のずれがある状態で減速 装置を始動すると、遊星歯車（１０）の該支持軸（９）についての自転および支 持軸（９）とともにする公転において、上記支持軸（９）の真円度の誤差、軸心 のずれを上記弾性ブッシュ（１８）の弾性変形により十分に吸収して遊星歯車（ １０）にほとんど伝えず、それにより該遊星歯車（１０）に振れや偏差を生起さ せず、内歯歯車（６）および太陽歯車（４）との正常かみ合いを継続させ、それ により異常摩耗を防止する。Now, when the speed reducer is started in the state where the support shaft (9) has a slight circularity error and the shaft center is deviated, the rotation and rotation of the planetary gear (10) with respect to the support shaft (9) are reduced. In the revolution along with the support shaft (9), the circularity error of the support shaft (9) and the deviation of the shaft center are sufficiently absorbed by the elastic deformation of the elastic bush (18), and the planetary gear (10) is made. Almost no transmission, thereby causing no runout or deviation in the planetary gear (10), and allowing normal engagement with the internal gear (6) and the sun gear (4) to continue, thereby preventing abnormal wear.
【０００９】 また、元来、支持軸（９）に製作上の誤差がほとんどない場合でも、遊星歯車 （１０）と内歯歯車（６）とのかみ合いから振動およびそれに伴う騒音が発生す るが、このような本来的振動も上記弾性ブッシュ（１８）に吸収して騒音を抑制 する。 第２段遊星歯車（１０ａ）の支持構造も上記と実質的に同一である。Further, even if the support shaft (9) originally has almost no manufacturing error, the meshing between the planetary gear (10) and the internal gear (6) causes vibration and accompanying noise. Also, such inherent vibration is absorbed by the elastic bush (18) to suppress noise. The support structure of the second stage planetary gear (10a) is also substantially the same as above.
【００１０】[0010]
本考案の遊星歯車装置における遊星歯車支持構造によれば、遊星歯車を軸支す る支持軸にわずかの真円度の誤差、軸心のずれ等の製作上の誤差がある場合、該 遊星歯車の支持軸についての自転および支持軸とともにする公転において上記支 持軸の製作上の誤差を弾性ブッシュの弾性変形により吸収して遊星歯車にほとん ど及ぼさず、それにより遊星歯車と内歯歯車及び太陽歯車との正常かみ合いを維 持させて異常摩耗を防止することができ、また、さらに遊星歯車と内歯歯車との かみ合いから生じる本来的振動、騒音とも弾性ブッシュにより吸収して十分に抑 制することができるのである。 According to the planetary gear support structure of the planetary gear device of the present invention, when there is a slight circularity error in the support shaft that supports the planetary gear or a manufacturing error such as a deviation of the axial center, In the rotation of the support shaft and the revolution along with the support shaft, the manufacturing error of the support shaft is absorbed by the elastic deformation of the elastic bush and does not almost affect the planetary gears. It is possible to maintain normal meshing with gears and prevent abnormal wear.Moreover, the inherent vibration and noise caused by meshing of planetary gears and internal gears are absorbed by elastic bushes and sufficiently suppressed. It is possible.
【図面の簡単な説明】[Brief description of drawings]
【図１】遊星歯車減速装置の一部切欠縦断面図である。FIG. 1 is a partially cutaway vertical sectional view of a planetary gear speed reducer.
【図２】遊星歯車支持構造の拡大縦断面図である。FIG. 2 is an enlarged vertical sectional view of a planetary gear support structure.
４、４ａ 太陽歯車 ６、６ａ 内歯歯車 ７、７ａ キヤリア ９、９ａ 支持軸 １０、１０ａ 遊星歯車 １６、１６ａ ローラベアリング １８、１８ａ 弾性ブッシュ 4, 4a Sun gear 6, 6a Internal gear 7, 7a Carrier 9, 9a Support shaft 10, 10a Planetary gear 16, 16a Roller bearing 18, 18a Elastic bush
Claims (1)
し、上記太陽歯車の軸心線について回転自在に支持され
たキヤリアに支持軸を突設し、該支持軸にベアリングを
介して支持された遊星歯車を上記太陽歯車および内歯歯
車にかみ合わせた遊星歯車装置において、 上記支持軸のベアリング外周と遊星歯車の軸孔内周との
間に、弾性を有するブッシュを嵌合した、 遊星歯車装置における遊星歯車支持構造。1. A sun gear and an internal gear around the sun gear, and a support shaft projecting from a carrier that is rotatably supported about an axis of the sun gear, and is supported by the support shaft via a bearing. A planetary gear device in which the above planetary gear is engaged with the sun gear and the internal gear, a bush having elasticity is fitted between the outer periphery of the bearing of the support shaft and the inner periphery of the shaft hole of the planetary gear. Planetary gear support structure in the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1301293U JPH0667949U (en) | 1993-03-01 | 1993-03-01 | Planetary gear support structure in planetary gear system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1301293U JPH0667949U (en) | 1993-03-01 | 1993-03-01 | Planetary gear support structure in planetary gear system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0667949U true JPH0667949U (en) | 1994-09-22 |
Family
ID=11821256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1301293U Pending JPH0667949U (en) | 1993-03-01 | 1993-03-01 | Planetary gear support structure in planetary gear system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0667949U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013038495A1 (en) * | 2011-09-13 | 2013-03-21 | 住友重機械工業株式会社 | Step-up gear for wind-powered electricity generation |
| KR20180120283A (en) * | 2017-04-26 | 2018-11-06 | 현대모비스 주식회사 | Actuator apparatus of caliper for vehicle |
| KR102051292B1 (en) * | 2019-02-20 | 2019-12-03 | 주식회사 헤만테크 | Planetary gear reducer |
-
1993
- 1993-03-01 JP JP1301293U patent/JPH0667949U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013038495A1 (en) * | 2011-09-13 | 2013-03-21 | 住友重機械工業株式会社 | Step-up gear for wind-powered electricity generation |
| KR20180120283A (en) * | 2017-04-26 | 2018-11-06 | 현대모비스 주식회사 | Actuator apparatus of caliper for vehicle |
| KR102051292B1 (en) * | 2019-02-20 | 2019-12-03 | 주식회사 헤만테크 | Planetary gear reducer |
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