JPH01152079U - - Google Patents
Info
- Publication number
- JPH01152079U JPH01152079U JP4772588U JP4772588U JPH01152079U JP H01152079 U JPH01152079 U JP H01152079U JP 4772588 U JP4772588 U JP 4772588U JP 4772588 U JP4772588 U JP 4772588U JP H01152079 U JPH01152079 U JP H01152079U
- Authority
- JP
- Japan
- Prior art keywords
- pressure chamber
- pressure oil
- cylinder
- side pressure
- rod side
- 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
- 230000035515 penetration Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Reciprocating Pumps (AREA)
Description
第１図は本考案の油圧駆動回路の実施例を示す
図、第２図は従来のコンクリートポンプの切断平
面図である。
１……ホツパ、２，３……輸送シリンダ、４，
５……ＮＯ．１貫入シリンダ、６，７……ＮＯ．
２貫入シリンダ、１０，１１……圧送ピストン、
１２……ＮＯ．１主シリンダ、１３……ＮＯ．２
主シリンダ、１６，１７，１８，１９，２０，２
１……圧油ライン、２２，２３，２４，２５，２
８，２９……パイロツトチエツク弁、Ｐ１……第
１ポンプ、Ｐ２……第２ポンプ、ＣＶ１……第１
切換弁、ＣＶ２……第２切換弁、ＣＶ３……第３
切換弁。
FIG. 1 is a diagram showing an embodiment of the hydraulic drive circuit of the present invention, and FIG. 2 is a cutaway plan view of a conventional concrete pump. 1...Hopper, 2, 3...Transportation cylinder, 4,
5...NO. 1 penetration cylinder, 6, 7...NO.
2 penetration cylinder, 10, 11...pressure piston,
12...NO. 1 main cylinder, 13...NO. 2
Main cylinder, 16, 17, 18, 19, 20, 2
1...Pressure oil line, 22, 23, 24, 25, 2
8,29... Pilot check valve, P1... First pump, P2... Second pump, CV1... First
Switching valve, CV2...Second switching valve, CV3...Third
switching valve.
Claims (1)
、後退させるＮＯ．１貫入シリンダとＮＯ．２貫
入シリンダの各ヘツド側圧力室を、第２切換弁で
切換えられる圧油ラインにて第２圧油供給源に接
続すると共に、上記２本の輸送シリンダ内のピス
トンを前進、後退させるＮＯ．１主シリンダとＮ
Ｏ．２主シリンダの各ヘツド側圧力室を、第１切
換弁で切換えられる圧油ラインにて第１圧油供給
源に接続し、且つＮＯ．１主シリンダとＮＯ．２
主シリンダの各ロツド側圧力室を、第３切換弁で
切換えられる圧油ラインにて上記第２圧油供給源
に接続し、更に、ＮＯ．１貫入シリンダのロツド
側圧力室をＮＯ．２主シリンダのロツド側圧力室
に、又、ＮＯ．２貫入シリンダのロツド側圧力室
とＮＯ．１主シリンダのロツド側圧力室にそれぞ
れ油圧ラインで接続し、上記ＮＯ．１及びＮＯ．
２の貫入シリンダに接続された圧油ラインと、Ｎ
Ｏ．１及びＮＯ．２の主シリンダのロツド側圧力
室に接続された圧油ラインと、上記油圧ラインに
各々パイロツトチエツク弁を設けてなることを特
徴とするコンクリートポンプの油圧駆動回路。 NO. moves the two transport cylinders that have penetrated into the hopper forward and backward. 1 penetration cylinder and NO. Each head side pressure chamber of the two penetration cylinders is connected to a second pressure oil supply source by a pressure oil line switched by a second switching valve, and the NO. 1 main cylinder and N
O. Each head side pressure chamber of the two main cylinders is connected to a first pressure oil supply source by a pressure oil line switched by a first switching valve, and the NO. 1 main cylinder and NO. 2
Each rod side pressure chamber of the main cylinder is connected to the second pressure oil supply source by a pressure oil line switched by a third switching valve, and further, the NO. 1. The rod side pressure chamber of the penetration cylinder is set to NO. In the rod side pressure chamber of the 2nd main cylinder, there is also a NO. The rod side pressure chamber of the 2-penetration cylinder and the NO. 1 Connect to the rod side pressure chamber of the main cylinder with a hydraulic line, and connect the above No. 1 and NO.
A pressure oil line connected to the penetration cylinder of No. 2, and
O. 1 and NO. 1. A hydraulic drive circuit for a concrete pump, comprising: a pressure oil line connected to a rod side pressure chamber of a second main cylinder; and a pilot check valve provided in each of said hydraulic lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988047725U JP2511468Y2 (en) | 1988-04-11 | 1988-04-11 | Hydraulic drive circuit for concrete pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988047725U JP2511468Y2 (en) | 1988-04-11 | 1988-04-11 | Hydraulic drive circuit for concrete pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01152079U true JPH01152079U (en) | 1989-10-19 |
| JP2511468Y2 JP2511468Y2 (en) | 1996-09-25 |
Family
ID=31273916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988047725U Expired - Lifetime JP2511468Y2 (en) | 1988-04-11 | 1988-04-11 | Hydraulic drive circuit for concrete pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2511468Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825203A (en) * | 1971-08-02 | 1973-04-02 |
-
1988
- 1988-04-11 JP JP1988047725U patent/JP2511468Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825203A (en) * | 1971-08-02 | 1973-04-02 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2511468Y2 (en) | 1996-09-25 |