JPS6187267U - - Google Patents
Info
- Publication number
- JPS6187267U JPS6187267U JP17328584U JP17328584U JPS6187267U JP S6187267 U JPS6187267 U JP S6187267U JP 17328584 U JP17328584 U JP 17328584U JP 17328584 U JP17328584 U JP 17328584U JP S6187267 U JPS6187267 U JP S6187267U
- Authority
- JP
- Japan
- Prior art keywords
- port
- supply
- load side
- ports
- communicate
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Multiple-Way Valves (AREA)
- Reciprocating Pumps (AREA)
Description
第１図および第２図は本考案の一列を示す側断
面図で、第１図は一方の切り換え位置にスプール
を移動した状態を、また第２図は他方の切り換え
位置にスプールを移動した状態を示す。第３図は
使用状態を示す油路回路図、第４図はピストン往
復動式コンクリートポンプの原理を示す略図であ
る。
３，４は油圧シリンダ、１１は油圧切換弁、１
２はスリーブ、１３〜１８は環状溝、１９はスプ
ール、２２，２３，２４は小径部、２５，２６，
２７は貫通孔、２８はスプール中空部、２９〜３
３は油路、Ａは給排側の第１のポート、Ｂは給排
側の第２のポート、Ａ′は負荷側の第１のポート
、Ｂ′は負荷側の第４のポート、Ａ″は負荷側の
第２のポート、Ｂ″は負荷側の第３のポート、Ｐ
は補給用ポートを示す。
Figures 1 and 2 are side sectional views showing one row of the present invention; Figure 1 shows the spool moved to one switching position, and Figure 2 shows the spool moved to the other switching position. shows. FIG. 3 is an oil path circuit diagram showing the state of use, and FIG. 4 is a schematic diagram showing the principle of the piston reciprocating concrete pump. 3 and 4 are hydraulic cylinders, 11 is a hydraulic switching valve, 1
2 is a sleeve, 13 to 18 are annular grooves, 19 is a spool, 22, 23, 24 are small diameter portions, 25, 26,
27 is a through hole, 28 is a spool hollow part, 29-3
3 is an oil path, A is the first port on the supply and discharge side, B is the second port on the supply and discharge side, A' is the first port on the load side, B' is the fourth port on the load side, A ″ is the second port on the load side, B″ is the third port on the load side, P
indicates a replenishment port.
Claims (1)
内周面に、負荷側の第１ポート、給排側の第１ポ
ート、負荷側の第２ポート、補給用ポート、負荷
側の第３ポート、給排側の第２ポート、負荷側の
第４ポートを上記の順で開口し、スプールが一方
の切換位置に移動したとき給排側の第１、第２の
ポートが負荷側の第１、第２のポートに連通する
と共に負荷側の第２、第３のポートおよび補給用
ポートが互に連通しスプールが他方の切換位置に
移動したとき給排側の第１、第２のポートが負荷
側の第２、第３のポートに連通するようスプール
の所要個所を小径にし、かつ上記他方の切換位置
において負荷側の第１、第４のポートおよび補給
用ポートが互に連通するようスプールの内部に連
絡用流路を形成したことを特徴とする油圧切換弁
。 A first port on the load side, a first port on the supply/discharge side, a second port on the load side, a supply port, a third port on the load side, The second port on the supply/discharge side and the fourth port on the load side are opened in the above order, and when the spool moves to one switching position, the first and second ports on the supply/discharge side open the first port on the load side, When the spool moves to the other switching position, the first and second ports on the supply/discharge side communicate with each other, and the second and third ports on the load side and the supply port communicate with each other. The required portions of the spool are made small in diameter so that they communicate with the second and third ports on the side, and the spool is made so that the first and fourth ports on the load side and the supply port communicate with each other at the other switching position. A hydraulic switching valve characterized by having a communication passage formed inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17328584U JPS6187267U (en) | 1984-11-15 | 1984-11-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17328584U JPS6187267U (en) | 1984-11-15 | 1984-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6187267U true JPS6187267U (en) | 1986-06-07 |
Family
ID=30730942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17328584U Pending JPS6187267U (en) | 1984-11-15 | 1984-11-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6187267U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819343U (en) * | 1981-07-28 | 1983-02-05 | 東芝エンジニアリング株式会社 | Bit variable code bit expansion circuit |
| JPS5846877B2 (en) * | 1980-12-31 | 1983-10-19 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | superconducting circuit |
-
1984
- 1984-11-15 JP JP17328584U patent/JPS6187267U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5846877B2 (en) * | 1980-12-31 | 1983-10-19 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | superconducting circuit |
| JPS5819343U (en) * | 1981-07-28 | 1983-02-05 | 東芝エンジニアリング株式会社 | Bit variable code bit expansion circuit |
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