JPS62101073U - - Google Patents
Info
- Publication number
- JPS62101073U JPS62101073U JP19344085U JP19344085U JPS62101073U JP S62101073 U JPS62101073 U JP S62101073U JP 19344085 U JP19344085 U JP 19344085U JP 19344085 U JP19344085 U JP 19344085U JP S62101073 U JPS62101073 U JP S62101073U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- switching
- switching valve
- hydraulic cylinder
- pressure
- 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
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Reciprocating Pumps (AREA)
Description
第１図は本考案コンクリートポンプ油圧切換装
置の実施例における油圧回路を示し、第２図は第
１図装置の電気系統ブロツク図である。第３図及
び第４図は夫々従来装置における油圧回路を示す
。
１……オイルポンプ、２……油圧切換弁ブロツ
ク、３……主油圧シリンダ、４……コンクリート
吸入・吐出切換バルブ駆動用油圧シリンダ、１０
，１１……ピストン位置検出スイツチ、１６……
コンクリート吸入・吐出切換バルブ、２１，２２
……圧力スイツチ、３１，３２……ワンシヨツト
マルチバイブレータ、４１，４２……ＡＮＤ回路
。
FIG. 1 shows a hydraulic circuit in an embodiment of the concrete pump hydraulic switching device of the present invention, and FIG. 2 is an electrical system block diagram of the device shown in FIG. FIGS. 3 and 4 each show a hydraulic circuit in a conventional device. 1... Oil pump, 2... Hydraulic switching valve block, 3... Main hydraulic cylinder, 4... Hydraulic cylinder for driving concrete suction/discharge switching valve, 10
, 11... Piston position detection switch, 16...
Concrete suction/discharge switching valve, 21, 22
... Pressure switch, 31, 32 ... One-shot multivibrator, 41, 42 ... AND circuit.
Claims (1)
、コンクリート吸入・吐出切換バルブ駆動用油圧
シリンダと、之等の油圧シリンダに供給する圧力
油を切換える油圧切換弁ブロツクと、前記油圧切
換弁ブロツクと油圧シリンダとの間の油圧回路に
配設された圧力スイツチとを具え、前記圧力スイ
ツチにより主油圧シリンダ又は切換バルブ駆動用
油圧シリンダの油圧回路における圧力上昇を検知
し他方の油圧シリンダに至る油圧切換弁を切換え
るようにしたコンクリートポンプ油圧切換装置に
おいて、前記圧力スイツチが油圧回路の圧力上昇
を検知して発信する切換弁切換信号を検知後所定
時間だけＯＦＦとする時限作動部材を設置し、圧
力スイツチを設けた油圧回路における切換開始時
のサージ圧に基づく切換信号の伝達を防ぐように
したことを特徴とするコンクリートポンプ油圧切
換装置。 A main hydraulic cylinder for driving the concrete pump, a hydraulic cylinder for driving the concrete suction/discharge switching valve, a hydraulic switching valve block for switching the pressure oil supplied to these hydraulic cylinders, and a combination of the hydraulic switching valve block and the hydraulic cylinder. and a pressure switch disposed in a hydraulic circuit between the hydraulic cylinders, the pressure switch detects a pressure increase in the hydraulic circuit of the main hydraulic cylinder or the hydraulic cylinder for driving the switching valve, and switches the hydraulic switching valve leading to the other hydraulic cylinder. In the concrete pump hydraulic switching device, the pressure switch detects a rise in pressure in the hydraulic circuit and sends a switching valve switching signal, which is then turned off for a predetermined period of time after installing a timed operating member. A concrete pump hydraulic switching device characterized by preventing transmission of a switching signal based on surge pressure at the start of switching in a circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985193440U JPH063195Y2 (en) | 1985-12-18 | 1985-12-18 | Concrete pump hydraulic switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985193440U JPH063195Y2 (en) | 1985-12-18 | 1985-12-18 | Concrete pump hydraulic switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62101073U true JPS62101073U (en) | 1987-06-27 |
| JPH063195Y2 JPH063195Y2 (en) | 1994-01-26 |
Family
ID=31149463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985193440U Expired - Lifetime JPH063195Y2 (en) | 1985-12-18 | 1985-12-18 | Concrete pump hydraulic switching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH063195Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007530855A (en) * | 2004-03-26 | 2007-11-01 | プッツマイスター アクチエンゲゼルシャフト | Concentrated material pump control apparatus and control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5628232A (en) * | 1979-08-14 | 1981-03-19 | Sumitomo Chem Co Ltd | Rubber composition having improved adhesivity |
| JPS57184280U (en) * | 1981-05-18 | 1982-11-22 |
-
1985
- 1985-12-18 JP JP1985193440U patent/JPH063195Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5628232A (en) * | 1979-08-14 | 1981-03-19 | Sumitomo Chem Co Ltd | Rubber composition having improved adhesivity |
| JPS57184280U (en) * | 1981-05-18 | 1982-11-22 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007530855A (en) * | 2004-03-26 | 2007-11-01 | プッツマイスター アクチエンゲゼルシャフト | Concentrated material pump control apparatus and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH063195Y2 (en) | 1994-01-26 |
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