JPH0215652U - - Google Patents
Info
- Publication number
- JPH0215652U JPH0215652U JP9331488U JP9331488U JPH0215652U JP H0215652 U JPH0215652 U JP H0215652U JP 9331488 U JP9331488 U JP 9331488U JP 9331488 U JP9331488 U JP 9331488U JP H0215652 U JPH0215652 U JP H0215652U
- Authority
- JP
- Japan
- Prior art keywords
- oil passage
- shaft side
- rotary joint
- operating
- switching valve
- 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
- 238000009434 installation Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Component Parts Of Construction Machinery (AREA)
- Joints Allowing Movement (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Description
図面は本考案に係る作業車のロータリジヨイン
ト構造の実施例を示し、第１図はロータリジヨイ
ントの断面図、第２図は排土板配設部の平面図、
第３図は油圧回路図、第４図はドーザ付きバツク
ホウ全体の側面図である。第５図は従来のロータ
リジヨイントの断面図である。
２……走行機台、３……旋回台、１５……ロー
タリジヨイント、１９……パイロツト式切換え弁
、２１……パイロツト操作油路、２１ａ……中軸
側油路部分、２１ｂ……外軸側油路部分、２２…
…操作弁、３４……中軸、３４ａ……端面、３５
……中軸側ドレン油路、３６……外筒軸、３７…
…外軸側ドレン油路、Ｘ……回転軸芯、Ｓ……連
通空間。
The drawings show an embodiment of the rotary joint structure of a working vehicle according to the present invention, FIG. 1 is a sectional view of the rotary joint, FIG. 2 is a plan view of the earth removal plate installation part,
FIG. 3 is a hydraulic circuit diagram, and FIG. 4 is a side view of the entire backhoe with a dozer. FIG. 5 is a sectional view of a conventional rotary joint. 2...Traveling machine base, 3...Swivel base, 15...Rotary joint, 19...Pilot type switching valve, 21...Pilot operating oil passage, 21a...Central shaft side oil passage portion, 21b...Outer shaft Side oil passage part, 22...
...Operation valve, 34...Center shaft, 34a...End face, 35
...Center shaft side drain oil passage, 36...Outer cylinder shaft, 37...
...Drain oil passage on the outer shaft side, X...Rotating shaft center, S...Communication space.
Claims (1)
ヨイント１５の中軸３４に中軸側ドレン油路３５
を上下向きに穿設し、前記ロータリジヨイント１
５の外筒軸３６の一端部に外軸側ドレン油路３７
を水平向きに穿設し、前記中軸側ドレン油路３５
と前記外軸側ドレン油路３７との連通空間Ｓを前
記中軸３４の端面３４ａと前記外筒軸３６の内面
との間に設け、走行機台側にパイロツト式切換え
弁１９を設けると共に、このパイロツト式切換え
弁１９のための操作弁２２を旋回台側に設けた作
業車のロータリジヨイント構造であつて、前記中
軸側ドレン油路３５を前記ロータリジヨイント１
５の回転軸芯Ｘから外れた箇所に配置し、前記パ
イロツト式切換え弁１９の操作部１９ａと前記操
作弁２２を接続するパイロツト操作油路２１を形
成する中軸側油路部分２１ａを前記中軸３４に前
記回転軸芯Ｘと同芯状に穿設し、前記パイロツト
操作油路２１を形成する外軸側油路部分２１ｂを
、前記連通空間Ｓの設置レベルと同一レベルに位
置させて前記外筒軸３６に水平向きに穿設すると
共に前記中軸側油路部分２１ａの一端側に接続し
てある作業車のロータリジヨイント構造。 A center shaft side drain oil passage 35 is connected to the center shaft 34 of the rotary joint 15 provided between the traveling machine base 2 and the swivel base 3.
are drilled vertically, and the rotary joint 1
An outer shaft side drain oil passage 37 is provided at one end of the outer cylinder shaft 36 of No. 5.
is drilled horizontally to form the center shaft side drain oil passage 35.
A communication space S with the outer shaft side drain oil passage 37 is provided between the end surface 34a of the center shaft 34 and the inner surface of the outer cylinder shaft 36, and a pilot type switching valve 19 is provided on the traveling machine base side. This is a rotary joint structure for a working vehicle in which an operating valve 22 for a pilot type switching valve 19 is provided on the rotating base side, and the center shaft side drain oil passage 35 is connected to the rotary joint 1.
The central shaft side oil passage portion 21a forming the pilot operating oil passage 21 connecting the operating portion 19a of the pilot type switching valve 19 and the operating valve 22 is disposed at a location away from the rotation axis X of the pilot type switching valve 19. The outer shaft side oil passage portion 21b, which forms the pilot operating oil passage 21, is located at the same level as the installation level of the communication space S. A rotary joint structure for a working vehicle, which is horizontally bored in the shaft 36 and connected to one end of the central shaft side oil passage portion 21a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9331488U JPH0215652U (en) | 1988-07-14 | 1988-07-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9331488U JPH0215652U (en) | 1988-07-14 | 1988-07-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0215652U true JPH0215652U (en) | 1990-01-31 |
Family
ID=31317763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9331488U Pending JPH0215652U (en) | 1988-07-14 | 1988-07-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0215652U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017082494A (en) * | 2015-10-28 | 2017-05-18 | キャタピラー エス エー アール エル | Swivel joint of work machine |
-
1988
- 1988-07-14 JP JP9331488U patent/JPH0215652U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017082494A (en) * | 2015-10-28 | 2017-05-18 | キャタピラー エス エー アール エル | Swivel joint of work machine |
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