JPS63182304U - - Google Patents
Info
- Publication number
- JPS63182304U JPS63182304U JP7461087U JP7461087U JPS63182304U JP S63182304 U JPS63182304 U JP S63182304U JP 7461087 U JP7461087 U JP 7461087U JP 7461087 U JP7461087 U JP 7461087U JP S63182304 U JPS63182304 U JP S63182304U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- oil chamber
- piston
- blow
- hydraulic cylinder
- 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
- 239000003921 oil Substances 0.000 claims 12
- 239000010720 hydraulic oil Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案に係る油圧シリンダを油圧供給
機構と共に示す原理図、第２図は本考案における
吹抜けバルブの一実施例を示す部分断面図、第３
図はピストン部とピストンロツド体との連結状態
を示す部分断面図、第４図はピストンロツド体上
端とダンプトラツクの荷台側との連結状態を示す
部分断面図、第５図は従来例としての油圧シリン
ダを第１図と同様に示す図である。
１……シリンダ体、２……ピストンロツド体、
３……ピストン部、４……吹抜けバルブ、５……
位置決め機構、３ａ……油通路、４０……バルブ
体、４１……噴流方向反転部材、Ａ……上方油室
、Ｂ……下方油室、Ｒ……空気室。
Fig. 1 is a principle diagram showing a hydraulic cylinder according to the present invention together with a hydraulic pressure supply mechanism, Fig. 2 is a partial sectional view showing an embodiment of a blow-through valve according to the present invention, and Fig. 3
The figure is a partial sectional view showing the connection state between the piston part and the piston rod body, FIG. 4 is a partial sectional view showing the connection state between the upper end of the piston rod body and the loading platform side of a dump truck, and FIG. 5 is a hydraulic cylinder as a conventional example. FIG. 2 is a diagram similar to FIG. 1; 1...Cylinder body, 2...Piston rod body,
3...Piston part, 4...Blowout valve, 5...
Positioning mechanism, 3a...oil passage, 40...valve body, 41...jet flow direction reversal member, A...upper oil chamber, B...lower oil chamber, R...air chamber.
Claims (1)
トン部で上記シリンダ体内に上方油室と下方油室
とを区画形成してなると共に、上方油室内上部に
空気室を有してなる油圧シリンダにおいて、ピス
トン部には下方油室からの作動油が当該ピストン
部を介して上方油室内に流入することを可とする
吹抜けバルブが配設されてなると共に、当該吹抜
けバルブはピストン部がシリンダ体内を設定スト
ローク以上に摺動するときに開放されるように形
成されてなり、かつ、当該開放時の吹抜けバルブ
を介しての作動油の噴流方向が上方油室内におい
て転向されるように形成されてなることを特徴と
する油圧シリンダ。 (2) 吹抜けバルブはピストン部に穿設されて下
方油室と上方油室との連通を可とする油通路に移
動自在に収装されてその上昇時に上記油通路を遮
断し、その下降時に上記油通路を連通するバルブ
体を有してなると共に、当該バルブ体の上端部に
噴流方向反転部材が介装されてなる実用新案登録
請求の範囲第１項記載の油圧シリンダ。 (3) ピストン部と当該ピストン部に下端側が連
設されるピストンロツド体との間には位置決め機
構が設けられてなる実用新案登録請求の範囲第１
項記載の油圧シリンダ。[Claims for Utility Model Registration] (1) A piston part slidably housed in the cylinder body defines an upper oil chamber and a lower oil chamber in the cylinder body, and the upper oil chamber has an upper oil chamber. In a hydraulic cylinder having an air chamber, the piston portion is provided with a blow-off valve that allows hydraulic oil from the lower oil chamber to flow into the upper oil chamber via the piston portion, and The blow-by valve is formed to open when the piston slides within the cylinder body beyond a set stroke, and when the blow-by valve is opened, the direction of the flow of hydraulic oil through the blow-by valve is directed toward the upper oil chamber. 1. A hydraulic cylinder, characterized in that it is formed to be deflected at a position. (2) The blow-off valve is movably housed in an oil passage that is bored in the piston and allows communication between the lower oil chamber and the upper oil chamber, and blocks the oil passage when the valve is raised, and when it is lowered. The hydraulic cylinder according to claim 1, which is a registered utility model and has a valve body that communicates with the oil passage, and a jet flow direction reversing member is interposed at the upper end of the valve body. (3) Utility model registration claim 1, in which a positioning mechanism is provided between the piston part and the piston rod body whose lower end side is connected to the piston part.
Hydraulic cylinder as described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7461087U JPS63182304U (en) | 1987-05-19 | 1987-05-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7461087U JPS63182304U (en) | 1987-05-19 | 1987-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63182304U true JPS63182304U (en) | 1988-11-24 |
Family
ID=30919980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7461087U Pending JPS63182304U (en) | 1987-05-19 | 1987-05-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63182304U (en) |
-
1987
- 1987-05-19 JP JP7461087U patent/JPS63182304U/ja active Pending
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