JPH0474757U

JPH0474757U -

Info

Publication number: JPH0474757U
Application number: JP11412890U
Authority: JP
Priority date: 1990-10-31
Filing date: 1990-10-31
Publication date: 1992-06-30
Anticipated expiration: 2005-10-31
Also published as: JP2584709Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す要部断面図、
第２図は他の実施例を示す要部断面図、第３図は
第２図に示す滑り部材の平面図、第４図は更に他
の実施例を示す要部断面図、第５図は従来の二段
遊星歯車減速装置の一例を示す全断面図、第６図
及び第７図は従来の軸受保持装置を示す部分断面
図である。１……油圧モータ、２，２’，２″，２……
ケーシング、３……二段遊星歯車機構、４……ス
プロケツト、５……履帯、６……トラツクフレー
ム、８……モータ軸、９……サンギヤ軸、１１…
…第１段サンギヤ、１２……第２段遊星ギヤ、１
３……第１段ギヤリヤ、１４……円筒状ハウジン
グ、１５……内歯リングギヤ、１６……第２段サ
ンギヤ、１８，３３，３６，４９，４９′……軸
受押え板、１９，３０，３１，３９，４０，４３
，４４……スプライン結合、２０，２０′，２０
″，２０……第２段キヤリヤ、２１……第２段
遊星ギヤ、２３，２３′，２３″……支持部材、
２４，２４′，２４″，２４……軸受、２９，
３４，３７，５０……押え板取付ボルト、３２，
４１，４５，４５′……アイドルギヤ、３５……
スペーサ、３８，４２……シム、４６，４６′…
…ボール、４７……保持器、４８，４８′……滑
り部材、５１，５２……溝部。 FIG. 1 is a cross-sectional view of essential parts showing an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a main part showing another embodiment, FIG. 3 is a plan view of the sliding member shown in FIG. 2, FIG. 4 is a cross-sectional view of a main part showing another embodiment, and FIG. A full sectional view showing an example of a conventional two-stage planetary gear reduction device, and FIGS. 6 and 7 are partial sectional views showing a conventional bearing holding device. 1...Hydraulic motor, 2, 2', 2'', 2...
Casing, 3... Two-stage planetary gear mechanism, 4... Sprocket, 5... Track, 6... Track frame, 8... Motor shaft, 9... Sun gear shaft, 11...
...1st stage sun gear, 12...2nd stage planetary gear, 1
3...First stage gear rear, 14...Cylindrical housing, 15...Internal toothed ring gear, 16...Second stage sun gear, 18, 33, 36, 49, 49'...Bearing press plate, 19, 30, 31, 39, 40, 43
, 44... Spline connection, 20, 20', 20
'', 20... Second stage carrier, 21... Second stage planetary gear, 23, 23', 23''... Support member,
24, 24', 24'', 24...bearing, 29,
34, 37, 50... Holding plate mounting bolt, 32,
41, 45, 45'...Idle gear, 35...
Spacer, 38, 42...Shim, 46, 46'...
...Ball, 47...Cage, 48, 48'...Sliding member, 51, 52...Groove portion.

Claims

[Scope of Claim for Utility Model Registration] (1) In a planetary gear reduction device that decelerates and transmits the rotational output of a hydraulic motor to a rotated object via a planetary gear reduction mechanism, a bearing rotatably supports the rotated object in a casing. A preload is applied to the bearing by a bearing holding plate attached to the side surface of the casing with bolts, and the final stage carrier is held on the casing via an idle gear. A bearing holding device for a planetary gear reduction mechanism. (2) The planetary gear reduction mechanism according to claim (1), wherein the idle gear is formed to have a substantially L-shaped cross section, and the final stage carrier is connected and held to the inner peripheral surface of the casing by spline connection. bearing retainer. (3) In the above bearing holding device, an idle gear that holds the final stage carrier to the casing by spline connection is provided on the side of the bearing, and a disk-shaped cage is further provided on the outside of the idle gear. 2. The bearing holding device for a planetary gear reduction mechanism according to claim 1, further comprising a sliding member made of a ball provided therein and a bearing holding plate attached to the side surface of the casing with bolts. (4) A claim characterized in that the ball of the sliding member has an elliptical spherical surface, and grooves each having a radius larger than the radius of the corresponding spherical surface are bored in the idle gear and bearing presser plate surfaces that contact the spherical surface.
(3) A bearing holding device for the planetary gear reduction mechanism described in (3).