JPH0433755U

JPH0433755U -

Info

Publication number: JPH0433755U
Application number: JP7464890U
Authority: JP
Priority date: 1990-07-12
Filing date: 1990-07-12
Publication date: 1992-03-19

Description

[Brief explanation of the drawing]

第１図乃至第４図は本考案の一実施例を示すも
ので、第１図は本考案に係るロータリージヨイン
トの側断面図、第２図は第１図のＡ−Ａ線矢視断
面図、第３図は油圧回路図、第４図は旋回式作業
車の全体側面図である。第５図は前記ロータリー
ジヨイントの取付け座を利用して設けた旋回ギヤ
のグリースバスの側断面図、第６図、第７図は、
ウインチ作業を可能にした旋回式作業車を示し、
第６図はウインチドラム取付け部の縦断面図、第
７図は同旋回式作業車のウインチ作業時の全体図
である。１……旋回式作業車、２……下部旋回体、３…
…上部旋回体、８……ロータリージヨイント、９
……外筒、１０……内筒、２０……内筒軸心部の
油路、２０ａ……内管内側の油路、２０ｂ……内
管外側の油路、２１……内管。 1 to 4 show an embodiment of the present invention. FIG. 1 is a side sectional view of a rotary joint according to the present invention, and FIG. 2 is a sectional view taken along the line A-A in FIG. 1. FIG. 3 is a hydraulic circuit diagram, and FIG. 4 is an overall side view of the revolving work vehicle. FIG. 5 is a side sectional view of the grease bath of the swing gear provided using the mounting seat of the rotary joint, and FIGS. 6 and 7 are
Showing a swiveling work vehicle that enables winch work,
FIG. 6 is a longitudinal cross-sectional view of the winch drum mounting portion, and FIG. 7 is an overall view of the swing-type working vehicle during winch work. 1... Swivel work vehicle, 2... Lower revolving structure, 3...
...Upper rotating body, 8...Rotary joint, 9
. . . Outer cylinder, 10 .

Claims

[Scope of utility model registration request]

In a rotary joint of a swing-type work vehicle that connects an oil passage between an inner cylinder and an outer cylinder that rotate relative to each other as the lower traveling body and the upper rotating body rotate relative to each other, A rotary joint for a swing-type work vehicle, characterized in that an inner pipe is inserted concentrically into a provided oil passage, and two oil passages are formed inside and outside the inner pipe.