JPH01103779U - - Google Patents
Info
- Publication number
- JPH01103779U JPH01103779U JP19900987U JP19900987U JPH01103779U JP H01103779 U JPH01103779 U JP H01103779U JP 19900987 U JP19900987 U JP 19900987U JP 19900987 U JP19900987 U JP 19900987U JP H01103779 U JPH01103779 U JP H01103779U
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- pressure
- switching valve
- fluid
- working fluid
- 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
- 239000012530 fluid Substances 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Reciprocating Pumps (AREA)
Description
第１図は本考案の一実施例を示す概略図、第２
図は一従来例を示す概略図である。
２……コンクリート輸送管、２ａ……コンクリ
ート吐出管、３……作動流体切り換え弁、４……
接続切り換え弁、１１……加圧ポンプ、２０……
コンクリートポンプ、２１……コンクリートシリ
ンダ、２１′……流体圧シリンダ、２２……圧力
スイツチ、２３……圧力調整弁、２４……切り換
え手段、Ｃ……コンクリート、Ｕ……制御手段。
Figure 1 is a schematic diagram showing one embodiment of the present invention;
The figure is a schematic diagram showing a conventional example. 2... Concrete transport pipe, 2a... Concrete discharge pipe, 3... Working fluid switching valve, 4...
Connection switching valve, 11... Pressure pump, 20...
Concrete pump, 21... Concrete cylinder, 21'... Fluid pressure cylinder, 22... Pressure switch, 23... Pressure regulating valve, 24... Switching means, C... Concrete, U... Control means.
Claims (1)
コンクリートシリンダと、これらのコンクリート
シリンダへ接続されたコンクリート吐出管と、前
記一対のコンクリートシリンダを相互に逆作動と
なるように駆動する流体圧シリンダと、この流体
圧シリンダの流体圧回路における作動流体の供給
切り換えを行う作動流体切り換え弁と、前記コン
クリート吐出管を前記各コンクリートシリンダの
一つに選択的に連通させる接続切り換え弁と、前
記流体圧回路の作動流体圧力によつて作動させら
れる、作動圧力の異なる複数の圧力スイツチおよ
び前記流体圧回路の作動流体圧力を設定するため
の複数の圧力調整弁と、前記圧力スイツチの非作
動時に、吐出行程にあるコンクリートシリンダを
コンクリート吐出管へ連通させ、かつ、圧力スイ
ツチの作動時に、コンクリート吐出管に連通させ
られているコンクリートシリンダを逆方向へ作動
させるべく、前記接続切り換え弁と作動流体切り
換え弁の作動を同期制御する制御手段と、前記圧
力スイツチの一つと圧力調整弁の一つとを１組と
して、これらを各組毎に切り換える切り換え手段
とを具備してなることを特徴とするコンクリート
ポンプ。 A pair of concrete cylinders that suck in and discharge fresh concrete, a concrete discharge pipe connected to these concrete cylinders, a fluid pressure cylinder that drives the pair of concrete cylinders so that they operate in opposite directions, and this fluid a working fluid switching valve for switching the supply of working fluid in the fluid pressure circuit of the pressure cylinder; a connection switching valve for selectively communicating the concrete discharge pipe with one of the concrete cylinders; and a working fluid switching valve for the fluid pressure circuit. a plurality of pressure switches having different operating pressures and a plurality of pressure regulating valves for setting the working fluid pressure of the fluid pressure circuit; and a concrete in the discharge stroke when the pressure switches are not actuated. The operation of the connection switching valve and the working fluid switching valve are controlled synchronously so that the cylinder is communicated with the concrete discharge pipe, and when the pressure switch is activated, the concrete cylinder communicated with the concrete discharge pipe is operated in the opposite direction. 1. A concrete pump comprising: a control means for controlling one of the pressure switches and one of the pressure regulating valves; and a switching means for switching between each set of one of the pressure switches and one of the pressure regulating valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19900987U JPH01103779U (en) | 1987-12-28 | 1987-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19900987U JPH01103779U (en) | 1987-12-28 | 1987-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01103779U true JPH01103779U (en) | 1989-07-13 |
Family
ID=31489483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19900987U Pending JPH01103779U (en) | 1987-12-28 | 1987-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01103779U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03123986U (en) * | 1990-03-29 | 1991-12-17 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5037204U (en) * | 1973-08-01 | 1975-04-18 | ||
| JPS5218722U (en) * | 1975-07-25 | 1977-02-09 |
-
1987
- 1987-12-28 JP JP19900987U patent/JPH01103779U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5037204U (en) * | 1973-08-01 | 1975-04-18 | ||
| JPS5218722U (en) * | 1975-07-25 | 1977-02-09 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03123986U (en) * | 1990-03-29 | 1991-12-17 |