JPS61177202U - - Google Patents
Info
- Publication number
- JPS61177202U JPS61177202U JP6119985U JP6119985U JPS61177202U JP S61177202 U JPS61177202 U JP S61177202U JP 6119985 U JP6119985 U JP 6119985U JP 6119985 U JP6119985 U JP 6119985U JP S61177202 U JPS61177202 U JP S61177202U
- Authority
- JP
- Japan
- Prior art keywords
- pipe line
- conduit
- valve
- pipe
- 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.)
- Granted
Links
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案の一実施例を示す油圧回路図、
第２図は同変形例を示す油圧回路図、第３図は従
来例を示す油圧回路図である。
符号の説明、１１……第１管路、１２……第２
管路、１３……第３管路、１４……第４管路、１
５……接続管路、２１……油圧モータ（油圧源）
、２３……切換弁、２４……リザーバ、２６……
油圧シリンダ、２６ａ……ロツド側ポート、２６
ｂ……ヘツド側ポート、２７……（第１）パイロ
ツトチエツク弁、２８……アキユムレータ、２９
……（第２）パイロツトチエツク弁、３１……オ
リフイス。
FIG. 1 is a hydraulic circuit diagram showing an embodiment of the present invention;
FIG. 2 is a hydraulic circuit diagram showing a modified example, and FIG. 3 is a hydraulic circuit diagram showing a conventional example. Explanation of symbols, 11...first conduit, 12...second
Conduit, 13...Third conduit, 14...Fourth conduit, 1
5... Connection pipe line, 21... Hydraulic motor (hydraulic source)
, 23... switching valve, 24... reservoir, 26...
Hydraulic cylinder, 26a... Rod side port, 26
b... Head side port, 27... (first) pilot check valve, 28... Accumulator, 29
...(2nd) Pilot check valve, 31...Orifice.
Claims (1)
続される第２管路と、複動型油圧シリンダのロツ
ド側ポートに接続される第３管路と、同油圧シリ
ンダのヘツド側ポートに接続される第４管路を備
えるとともに、これら各管路の接続を切換える切
換弁を備えてなる油圧回路において、前記切換弁
として第１管路を第３管路にまた第２管路を第４
管路に接続する位置と第１管路を第３管路及び
第４管路に接続する位置を有する弁を採用する
とともに、前記第３管路に通常は前記切換弁に向
かう流れを阻止しかつ前記第４管路に圧油が供給
されたとき前記切換弁に向かう流れを許容する第
１パイロツトチエツク弁を介装し、同第１パイロ
ツトチエツク弁と前記ロツド側ポート間の前記第
３管路にアキユムレータを接続し、前記第４管路
に通常は前記切換弁に向かう流れを阻止しかつパ
イロツト力が作用したとき前記切換弁に向かう流
れを許容する第２パイロツトチエツク弁を介装し
、同第２パイロツトチエツク弁と前記ヘツド側ポ
ート間の前記第４管路と前記アキユムレータの接
続されてなる第３管路を接続管路により接続し、
同接続管路中にオリフイスを設けたことを特徴と
する油圧回路。 A first pipe line connected to a hydraulic power source, a second pipe line connected to a reservoir, a third pipe line connected to a rod side port of a double-acting hydraulic cylinder, and a head side port of the same hydraulic cylinder. In a hydraulic circuit comprising a fourth conduit connected to each other and a switching valve for switching the connection of each of these conduits, the switching valve serves as the first conduit to the third conduit and the second conduit to the third conduit. 4
A valve having a position for connecting to the pipe line and a position for connecting the first pipe line to the third pipe line and the fourth pipe line is employed, and the valve has a position for connecting the first pipe line to the third pipe line and a fourth pipe line, and a valve for blocking the flow normally directed to the switching valve in the third pipe line. and a first pilot check valve that allows pressure oil to flow toward the switching valve when pressure oil is supplied to the fourth pipe, and the third pipe between the first pilot check valve and the rod side port. connecting an accumulator to the fourth conduit, interposing a second pilot check valve in the fourth conduit that normally blocks flow toward the switching valve and allows flow toward the switching valve when a pilot force is applied; connecting the fourth pipe line between the second pilot check valve and the head side port and the third pipe line connected to the accumulator through a connecting pipe line;
A hydraulic circuit characterized in that an orifice is provided in the connecting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6119985U JPH0341133Y2 (en) | 1985-04-24 | 1985-04-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6119985U JPH0341133Y2 (en) | 1985-04-24 | 1985-04-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61177202U true JPS61177202U (en) | 1986-11-05 |
| JPH0341133Y2 JPH0341133Y2 (en) | 1991-08-29 |
Family
ID=30589253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6119985U Expired JPH0341133Y2 (en) | 1985-04-24 | 1985-04-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0341133Y2 (en) |
-
1985
- 1985-04-24 JP JP6119985U patent/JPH0341133Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0341133Y2 (en) | 1991-08-29 |
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