JPS58177605U - Three stage cylinder device - Google Patents
Three stage cylinder deviceInfo
- Publication number
- JPS58177605U JPS58177605U JP5494683U JP5494683U JPS58177605U JP S58177605 U JPS58177605 U JP S58177605U JP 5494683 U JP5494683 U JP 5494683U JP 5494683 U JP5494683 U JP 5494683U JP S58177605 U JPS58177605 U JP S58177605U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- oil
- extension
- valve
- oil supply
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の三段シリンダ装置の断面図、第２図な
いし第６図は作動説明図、第７図は他の実施態様を示す
図である。
Ａ・・・・・・第１シリンダ、Ｂ・・・・・・第２シリ
ンダ、Ｃ・・・・・・ピストンロッド、１０．１４・・
・・・・縮少側油室、１２・・・・・・中パイプ、１６
．２０・・・・・・伸長側油室、２４．３８・・・・・
・弁、３３−−−−−−チェック弁。
２０ ３４３３２２５７ Ｂ １４３８
ａ ５９ ３８ ３５ ６０ ６２ １６第、
５図
１９
、 Ｉ Ｙ。
補正 昭５８． ４．１３
実用新案登録請求の範囲を次のように補正する。
Ｏ実用新案登録請求の範囲
ピストン１５及びピストンロッドＣを具える第１シリン
ダＡを第２シリンダＢ内に摺動自在に嵌装してなる三段
シリンダ装置において、縮少側油室１０，１４を共に連
通して油給排装置に接続し、この油給排装置から伸長側
油室１６，２（）への給排回路の途中でかつ第２シリン
ダＢのピストン部１８に、伸長時に第１シリンダＡの伸
長終端で作動して給油側を第２シリンダＢの伸長側油室
２０通じる弁２４と、縮少時に第２シリンダＢの縮少終
端で作動して第１シリンダＡの伸長側油室１６を排油側
に通じる弁３８とを設け、前記弁２４は、縮少時に第２
シリンダＢの伸長側油室２０を常に排油側に通じ、前記
弁３８は、伸長時に給油側を常に第１シリンダＡの伸長
側油室１６に通じるよう構成し、さらに前記油給排装置
からこの三段シリンダ装置の給排ポート６．８への配管
の途中に、伸長側油室への仲の流れは許容し、その逆方
向への流れは阻止するも、縮少時における給油側からの
パイロット圧により作動されて前記逆方向への流れを許
容するカウンターバランス６３を設ケたことを特徴とす
る三段シリンダ装置。FIG. 1 is a sectional view of the three-stage cylinder device of the present invention, FIGS. 2 to 6 are explanatory diagrams of the operation, and FIG. 7 is a diagram showing another embodiment. A...First cylinder, B...Second cylinder, C...Piston rod, 10.14...
... Reduction side oil chamber, 12 ... Middle pipe, 16
．． 20...Extension side oil chamber, 24.38...
・Valve, 33---Check valve. 20 34332257 B 1438
a 59 38 35 60 62 16th,
5 Figure 19, IY. Amended 1984. 4.13 The scope of claims for utility model registration shall be amended as follows. O Utility Model Registration Claims In a three-stage cylinder device in which a first cylinder A having a piston 15 and a piston rod C is slidably fitted into a second cylinder B, the reduction side oil chambers 10, 14 are connected to an oil supply/drainage device, and are connected to the piston portion 18 of the second cylinder B in the middle of the supply/drainage circuit from the oil supply/drainage device to the extension side oil chambers 16, 2(), and are connected to the piston portion 18 of the second cylinder B during extension. A valve 24 operates at the end of extension of the first cylinder A to connect the oil supply side to the extension side oil chamber 20 of the second cylinder B, and a valve 24 operates at the end of contraction of the second cylinder B to connect the oil supply side to the extension side of the first cylinder A during contraction. A valve 38 that communicates the oil chamber 16 to the oil drain side is provided, and the valve 24 is configured to open a second valve when contracting.
The oil chamber 20 on the extension side of the cylinder B is always connected to the oil drain side, and the valve 38 is configured so that the oil supply side is always connected to the oil chamber 16 on the extension side of the first cylinder A when the cylinder B is extended. In the middle of the piping to the supply/discharge port 6.8 of this three-stage cylinder device, flow into the oil chamber on the extension side is allowed and flow in the opposite direction is blocked; A three-stage cylinder device characterized in that a counterbalance 63 is provided which is operated by pilot pressure and allows flow in the opposite direction.
Claims (1)
ダＡを第２シリンダＢ内に摺動自在に嵌装してなる三段
シＩＪンダ装置において、縮少側油室１０，１４を共に
連通して油給排装置に接続し、この油給排装置から伸長
側油圧１６．２０への給排回路の途中でかつ第２シリン
ダＢのピストン部１８に、伸長時に第１シリンダＡの伸
長終端で作動して給油側を第２シリンダＢの伸長側油室
２０に通じる弁２４と、縮少時に第２シリンダＢの縮少
終端で作動して第１シリンダＡの伸長側油室１６を排油
側に通じる弁３８とを設け、前記弁２４は、縮少時に第
２シリンダＢの伸長側油室２０を常に排油側に通じ、前
記弁３８は、伸長時に給油側を常に第１シリンダＡの伸
長側油室１６に通じるよう構成したことを特徴とする三
段シリンダ装置。In a three-stage cylinder IJ device in which a first cylinder A having a piston 15 and a piston rod C is slidably fitted into a second cylinder B, the contraction side oil chambers 10 and 14 are communicated with each other. It is connected to an oil supply and discharge device, and is activated at the end of the extension of the first cylinder A during extension, in the middle of the supply and discharge circuit from this oil supply and discharge device to the extension side hydraulic pressure 16.20, and to the piston portion 18 of the second cylinder B. The valve 24 connects the oil supply side to the extension side oil chamber 20 of the second cylinder B, and the valve 24 operates at the end of contraction of the second cylinder B when the second cylinder B is contracted to connect the extension side oil chamber 16 of the first cylinder A to the oil drain side. The valve 24 always communicates the oil chamber 20 on the extension side of the second cylinder B to the oil drain side when retracted, and the valve 38 always communicates the oil supply side to the oil supply side of the first cylinder A when it is extended. A three-stage cylinder device characterized in that it is configured to communicate with an extension side oil chamber 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5494683U JPS58177605U (en) | 1983-04-13 | 1983-04-13 | Three stage cylinder device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5494683U JPS58177605U (en) | 1983-04-13 | 1983-04-13 | Three stage cylinder device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58177605U true JPS58177605U (en) | 1983-11-28 |
| JPS6143835Y2 JPS6143835Y2 (en) | 1986-12-10 |
Family
ID=30065552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5494683U Granted JPS58177605U (en) | 1983-04-13 | 1983-04-13 | Three stage cylinder device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58177605U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019193259A1 (en) * | 2018-04-06 | 2019-10-10 | Tmk Energiakoura Oy | Hydraulic actuator, working device, and energy-wood grapple |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5362077A (en) * | 1976-11-17 | 1978-06-03 | Unic Corp | Triple stage cylinder device |
| JPS5512006U (en) * | 1978-07-07 | 1980-01-25 |
-
1983
- 1983-04-13 JP JP5494683U patent/JPS58177605U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5362077A (en) * | 1976-11-17 | 1978-06-03 | Unic Corp | Triple stage cylinder device |
| JPS5512006U (en) * | 1978-07-07 | 1980-01-25 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019193259A1 (en) * | 2018-04-06 | 2019-10-10 | Tmk Energiakoura Oy | Hydraulic actuator, working device, and energy-wood grapple |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6143835Y2 (en) | 1986-12-10 |
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