JPH0214809U - - Google Patents
Info
- Publication number
- JPH0214809U JPH0214809U JP9273288U JP9273288U JPH0214809U JP H0214809 U JPH0214809 U JP H0214809U JP 9273288 U JP9273288 U JP 9273288U JP 9273288 U JP9273288 U JP 9273288U JP H0214809 U JPH0214809 U JP H0214809U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- oil
- piston rod
- chamber
- cylinder body
- 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.)
- Granted
Links
- 239000003921 oil Substances 0.000 claims 6
- 239000010720 hydraulic oil Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Actuator (AREA)
- Fluid-Damping Devices (AREA)
Description
第１図は本考案の実施例を示すチルトシリンダ
の縦断面図、第２図は同じくリリーフ弁の拡大し
た縦断面図、第３図はチルトシリンダの作動構造
を示す油圧回路図である。また、第４図は従来例
を示すチルトシリンダの縦断面図、第５図は同じ
く油圧回路図である。
１……シリンダ本体、２……ピストン、３……
ピストンロツド、４……中空部、５，７……油室
、６，８……バルブ、９……プツシユロツド、１
０……操作レバー、１２……リリーフ弁、１５…
…アキユームレータ。
FIG. 1 is a vertical cross-sectional view of a tilt cylinder showing an embodiment of the present invention, FIG. 2 is an enlarged vertical cross-sectional view of a relief valve, and FIG. 3 is a hydraulic circuit diagram showing the operating structure of the tilt cylinder. Further, FIG. 4 is a vertical sectional view of a tilt cylinder showing a conventional example, and FIG. 5 is a hydraulic circuit diagram. 1... Cylinder body, 2... Piston, 3...
Piston rod, 4... Hollow part, 5, 7... Oil chamber, 6, 8... Valve, 9... Push rod, 1
0...Operation lever, 12...Relief valve, 15...
...accumulator.
Claims (1)
由に収装したピストンに中空のピストンロツドを
結合してシリンダ本体から摺動自由に突出させ、
ピストンの両側に画成された各油室をピストンロ
ツドの中空部を介して油溜室に接続する常閉のバ
ルブをそれぞれピストンに設け、外部からの操作
によりこれらのバルブを強制的に開弁するプツシ
ユロツドをピストンロツドを縦貫して設けたシリ
ンダ装置において、前記油室のうちピストンロツ
ドと反対側の油室の一定以上の圧力上昇時に開い
てこの油室の作動油を前記油溜室に逃がすリリー
フ弁をピストンに設けたことを特徴とするシリン
ダ装置。 A hollow piston rod is connected to a piston that is slidably housed inside a cylinder body containing hydraulic oil, and the piston rod is slidably protruded from the cylinder body.
Each piston is provided with normally closed valves that connect the oil chambers defined on both sides of the piston to the oil reservoir chamber through the hollow part of the piston rod, and these valves are forcibly opened by external operation. In a cylinder device in which a push rod is installed vertically through the piston rod, a relief valve is provided that opens when the pressure in the oil chamber on the opposite side of the oil chamber from the piston rod rises above a certain level to release the hydraulic oil in this oil chamber to the oil reservoir chamber. A cylinder device characterized by being provided on a piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9273288U JPH0633224Y2 (en) | 1988-07-13 | 1988-07-13 | Cylinder device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9273288U JPH0633224Y2 (en) | 1988-07-13 | 1988-07-13 | Cylinder device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0214809U true JPH0214809U (en) | 1990-01-30 |
| JPH0633224Y2 JPH0633224Y2 (en) | 1994-08-31 |
Family
ID=31317171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9273288U Expired - Lifetime JPH0633224Y2 (en) | 1988-07-13 | 1988-07-13 | Cylinder device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633224Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53120116U (en) * | 1977-03-03 | 1978-09-25 |
-
1988
- 1988-07-13 JP JP9273288U patent/JPH0633224Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53120116U (en) * | 1977-03-03 | 1978-09-25 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0633224Y2 (en) | 1994-08-31 |
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