JPS5967602U - hydraulic circuit - Google Patents
hydraulic circuitInfo
- Publication number
- JPS5967602U JPS5967602U JP16282782U JP16282782U JPS5967602U JP S5967602 U JPS5967602 U JP S5967602U JP 16282782 U JP16282782 U JP 16282782U JP 16282782 U JP16282782 U JP 16282782U JP S5967602 U JPS5967602 U JP S5967602U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- hydraulic cylinder
- valve
- oil
- 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
Landscapes
- Control And Safety Of Cranes (AREA)
- Fluid-Pressure Circuits (AREA)
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図はクレーンの側面図、第２図は油圧回路図、第３
図は切換弁の断面図である。
３・・・伸縮ブーム、７・・・油圧シリンダ、８・・・
方向切換弁、９・・・油圧ポンプ、１０・・・油圧タン
ク、１３・・・ＩＪ ＩＪ−フ弁、１８・・・切換弁。Figure 1 is a side view of the crane, Figure 2 is a hydraulic circuit diagram, and Figure 3 is a side view of the crane.
The figure is a sectional view of the switching valve. 3...Telescopic boom, 7...Hydraulic cylinder, 8...
Directional switching valve, 9... Hydraulic pump, 10... Hydraulic tank, 13... IJ IJ-fu valve, 18... Switching valve.
Claims (1)
とともに、この方向切換弁と油圧ポンプとの間にリリー
フ弁を配置し、上記方向切換弁の操作によって上記油圧
シリンダの伸縮をなし、−カニの油圧シリンダからの戻
り油を作動油として油圧シリンダに帰すことにより油圧
シリンダの作動速度を増速可能とした油圧回路において
、上記油圧シリンダの増速をなす際、この油圧シリンダ
と上記方向切換弁とを結ぶ戻り側油圧管路の途中に、上
記油圧シリンダの作動油の圧力が上記リリ ′−フ弁
のリリーフ圧以下でかつ所定圧以上となった場合、上記
戻り油を油圧タンクに逃がす切換弁を設けたことを特徴
とする油圧回路。A directional switching valve is provided between the hydraulic pump and the hydraulic cylinder, and a relief valve is arranged between the directional switching valve and the hydraulic pump, and the hydraulic cylinder is expanded and contracted by operating the directional switching valve. In a hydraulic circuit that is capable of increasing the operating speed of a hydraulic cylinder by returning the return oil from the hydraulic cylinder to the hydraulic cylinder as hydraulic oil, when increasing the speed of the hydraulic cylinder, the hydraulic cylinder and the directional control valve In the middle of the return side hydraulic pipe connecting the hydraulic cylinder, there is a switch that releases the return oil to the hydraulic tank when the pressure of the hydraulic oil in the hydraulic cylinder is lower than the relief pressure of the relief valve and higher than a predetermined pressure. A hydraulic circuit characterized by being provided with a valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16282782U JPS5967602U (en) | 1982-10-27 | 1982-10-27 | hydraulic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16282782U JPS5967602U (en) | 1982-10-27 | 1982-10-27 | hydraulic circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5967602U true JPS5967602U (en) | 1984-05-08 |
Family
ID=30357450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16282782U Pending JPS5967602U (en) | 1982-10-27 | 1982-10-27 | hydraulic circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5967602U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62188603U (en) * | 1986-05-21 | 1987-12-01 | ||
| JP2015101450A (en) * | 2013-11-26 | 2015-06-04 | 株式会社タダノ | Boom extension device of crane |
| JP2016200177A (en) * | 2015-04-08 | 2016-12-01 | 古河ユニック株式会社 | Speed increase valve device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5638570A (en) * | 1979-09-03 | 1981-04-13 | Beritasu Kk | Method of converting wave energy by use of hydraulic turbine |
-
1982
- 1982-10-27 JP JP16282782U patent/JPS5967602U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5638570A (en) * | 1979-09-03 | 1981-04-13 | Beritasu Kk | Method of converting wave energy by use of hydraulic turbine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62188603U (en) * | 1986-05-21 | 1987-12-01 | ||
| JP2015101450A (en) * | 2013-11-26 | 2015-06-04 | 株式会社タダノ | Boom extension device of crane |
| JP2016200177A (en) * | 2015-04-08 | 2016-12-01 | 古河ユニック株式会社 | Speed increase valve device |
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