JPH03110241U

JPH03110241U -

Info

Publication number: JPH03110241U
Application number: JP2036390U
Authority: JP
Priority date: 1990-02-28
Filing date: 1990-02-28
Publication date: 1991-11-12

Description

[Brief explanation of drawings]

第１図〜第３図は本考案に係る一実施例を示し
、第１図は油圧式掘削機のフアイナルとしての遊
星歯車減速装置の断面図、第２図は遊星歯車を支
承する支軸を示し、同Ａ図は一部破断側面図、同
Ｂ図は平面図、第３図は支軸の取付を示した斜視
図、第４図は従来の同遊星歯車減速装置の一例を
示す断面図、第５図は第４図のＡ−Ａ断面図であ
る。１，２１…ケーシング、４，２３…中空部、５
…油圧モータ、８…太陽歯車、９，２３…円筒部
、１０，２６…外端環状面、１１ａ〜ｃ…遊星歯
車、１２，２４…支軸、１５…被回転ハブ、１６
…ケース、１８…内歯車、２４ａ…フランジ。 Figures 1 to 3 show an embodiment of the present invention, with Figure 1 being a sectional view of a planetary gear reduction device as the final part of a hydraulic excavator, and Figure 2 showing a support shaft for supporting a planetary gear. Figure A is a partially cutaway side view, Figure B is a plan view, Figure 3 is a perspective view showing the attachment of the support shaft, and Figure 4 is a sectional view showing an example of the conventional planetary gear reduction device. , FIG. 5 is a sectional view taken along line AA in FIG. 4. 1, 21...Casing, 4, 23...Hollow part, 5
... Hydraulic motor, 8... Sun gear, 9, 23... Cylindrical portion, 10, 26... Outer end annular surface, 11a-c... Planet gear, 12, 24... Support shaft, 15... Rotated hub, 16
...Case, 18...Internal gear, 24a...Flange.

Claims

[Scope of utility model registration request]

A casing that holds a hydraulic motor fitted into a hollow shaft center and a sun gear attached to the motor shaft, and a rotated object rotatably supported via a bearing on the outer periphery of a cylindrical portion formed in the casing. A hub, an internal gear sandwiched by a case on the outer peripheral surface of the rotated hub, a plurality of planetary gears rotatably attached to the outer end surface of the cylindrical part of the casing, and , in a planetary gear reduction device configured to reduce and transmit the rotation of the sun gear to an internal gear, a support shaft for supporting each of the planetary gears is provided with a flange formed at the base of the support shaft on the outer end surface of the cylindrical portion of the casing. A planetary gear reduction device characterized by abutting and fixing with mounting bolts.