JPH01165306U - - Google Patents
Info
- Publication number
- JPH01165306U JPH01165306U JP6069988U JP6069988U JPH01165306U JP H01165306 U JPH01165306 U JP H01165306U JP 6069988 U JP6069988 U JP 6069988U JP 6069988 U JP6069988 U JP 6069988U JP H01165306 U JPH01165306 U JP H01165306U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic cylinder
- port
- flow path
- ports
- oil chamber
- 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
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000010727 cylinder oil Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
Landscapes
- Fluid-Pressure Circuits (AREA)
Description
第１図は本考案の一実施例を示す作動油循環方
式の冷却方法を持つ油圧シリンダーの回路図、第
２図Ａは油圧シリンダーの側部断面図、第２図Ｂ
は同上の端面図、第２図Ｃは第２図ＡのＡ〜Ａ線
断面図、第３図は本考案の他の実施例を示す油圧
シリンダーの回路図、第４図は従来の油圧シリン
ダーの冷却装置説明図である。
１…作動用油圧ポンプ、２…三方切換弁、３…
二方切換弁、４…油圧シリンダー、５…二方切換
弁、６…冷却用油圧ポンプ、７，７′…油圧パワ
ーユニツト、８，８′…油圧シリンダー油室、ｃ
，ｄ，ｅ，ｆ…油圧シリンダーポート口。
Fig. 1 is a circuit diagram of a hydraulic cylinder with a hydraulic oil circulation cooling method showing an embodiment of the present invention, Fig. 2A is a side sectional view of the hydraulic cylinder, and Fig. 2B
is an end view of the same as above, FIG. 2C is a sectional view taken along the line A to A in FIG. 2A, FIG. 3 is a circuit diagram of a hydraulic cylinder showing another embodiment of the present invention, and FIG. 4 is a conventional hydraulic cylinder. FIG. 2 is an explanatory diagram of a cooling device. 1... Hydraulic pump for operation, 2... Three-way switching valve, 3...
Two-way switching valve, 4... Hydraulic cylinder, 5... Two-way switching valve, 6... Hydraulic pump for cooling, 7, 7'... Hydraulic power unit, 8, 8'... Hydraulic cylinder oil chamber, c
, d, e, f...Hydraulic cylinder port opening.
Claims (1)
油室のそれぞれに、２個のポート口を設け、一方
の油室の１つのポート口と他方の油室の１つのポ
ート口を連通する流路を配設し、該流路の途中に
開閉弁を設けると共に、前記２つの油室の他のポ
ート口を、切換弁を介して油圧パワーユニツトに
接続してなることを特徴とする油圧シリンダーの
冷却装置。 Two ports are provided in each of the two oil chambers separated by the piston of the hydraulic cylinder, and a flow path is provided that communicates one port of one oil chamber with one port of the other oil chamber. A cooling device for a hydraulic cylinder, characterized in that an on-off valve is provided in the middle of the flow path, and the other port ports of the two oil chambers are connected to a hydraulic power unit via a switching valve. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6069988U JPH01165306U (en) | 1988-05-10 | 1988-05-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6069988U JPH01165306U (en) | 1988-05-10 | 1988-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01165306U true JPH01165306U (en) | 1989-11-20 |
Family
ID=31286401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6069988U Pending JPH01165306U (en) | 1988-05-10 | 1988-05-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01165306U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06235406A (en) * | 1993-02-04 | 1994-08-23 | Niigata Eng Co Ltd | Cooling mechanism for liquid pressure cylinder |
| JP2007309359A (en) * | 2006-05-16 | 2007-11-29 | Kobelco Contstruction Machinery Ltd | Working machine hydraulic circuit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5329911U (en) * | 1976-08-20 | 1978-03-14 |
-
1988
- 1988-05-10 JP JP6069988U patent/JPH01165306U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5329911U (en) * | 1976-08-20 | 1978-03-14 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06235406A (en) * | 1993-02-04 | 1994-08-23 | Niigata Eng Co Ltd | Cooling mechanism for liquid pressure cylinder |
| JP2007309359A (en) * | 2006-05-16 | 2007-11-29 | Kobelco Contstruction Machinery Ltd | Working machine hydraulic circuit |