JPS58178804U - Hydraulic system relief prevention device - Google Patents
Hydraulic system relief prevention deviceInfo
- Publication number
- JPS58178804U JPS58178804U JP7655682U JP7655682U JPS58178804U JP S58178804 U JPS58178804 U JP S58178804U JP 7655682 U JP7655682 U JP 7655682U JP 7655682 U JP7655682 U JP 7655682U JP S58178804 U JPS58178804 U JP S58178804U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- hydraulic cylinder
- switching valve
- prevention device
- hydraulic system
- 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図は本考案を適用したリフトアームの油圧装置を示
す側面ｉ、第２図はそのブロックを示す断面図、第３図
は切換え弁が切換わった状態を示す断面図、第４図は一
部変更した実施例にょろりフトアームとロッドの連動部
分を示す側面図、第 ５図は他の変更した実施例
による連動部分を示す側面図である。
１・・・油圧ケース、３・・・作動（リフト）アーム、
５・・・ブロック、６・・・・・・リリーフカバー、１
１・・・切換え弁（軸）、１２〜１７・・・連動（手段
）、２１〜２９・・・油圧通路。
第４
・図Fig. 1 is a side view showing a lift arm hydraulic system to which the present invention is applied, Fig. 2 is a sectional view showing the block, Fig. 3 is a sectional view showing the state in which the switching valve is switched, and Fig. 4 is FIG. 5 is a side view showing the interlocking part between the lift arm and the rod in a partially modified embodiment; FIG. 5 is a side view showing the interlocking part in another modified embodiment. 1... Hydraulic case, 3... Operating (lift) arm,
5...Block, 6...Relief cover, 1
1...Switching valve (shaft), 12-17...Interlocking (means), 21-29...Hydraulic passage. 4th figure
Claims (1)
に導入し、該油圧シリンダにより作動アームを作動する
油圧装置において、油圧通路に、油圧シリンダとタンク
とに切換え得る切換え弁を設置し、該切換え弁を作動ア
ームに連動して、作動アームの通常作動範囲では切換え
弁を圧油が油圧シリンダに連通ずるように保持すると共
に、油圧シリンダの最端位置直前に切換え弁を切換えて
圧油がタンクに連通ずるように構成した油圧装置のリリ
ーフ防止装置。In a hydraulic device that introduces pressure oil from a hydraulic pump into a hydraulic cylinder via a hydraulic passage and operates an actuating arm by the hydraulic cylinder, a switching valve capable of switching between the hydraulic cylinder and a tank is installed in the hydraulic passage, The switching valve is linked to the operating arm, and in the normal operating range of the operating arm, the switching valve is held so that the pressure oil communicates with the hydraulic cylinder, and the switching valve is switched just before the end position of the hydraulic cylinder to prevent the pressure oil from flowing. A relief prevention device for a hydraulic system configured to communicate with a tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7655682U JPS58178804U (en) | 1982-05-24 | 1982-05-24 | Hydraulic system relief prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7655682U JPS58178804U (en) | 1982-05-24 | 1982-05-24 | Hydraulic system relief prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58178804U true JPS58178804U (en) | 1983-11-30 |
| JPH0135607Y2 JPH0135607Y2 (en) | 1989-10-31 |
Family
ID=30085867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7655682U Granted JPS58178804U (en) | 1982-05-24 | 1982-05-24 | Hydraulic system relief prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58178804U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5632901A (en) * | 1979-08-24 | 1981-04-02 | Iseki Agricult Mach | Safety mechanism of lifting and lowering operation device by liquid pressure |
-
1982
- 1982-05-24 JP JP7655682U patent/JPS58178804U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5632901A (en) * | 1979-08-24 | 1981-04-02 | Iseki Agricult Mach | Safety mechanism of lifting and lowering operation device by liquid pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0135607Y2 (en) | 1989-10-31 |
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