JPH0454982U - - Google Patents
Info
- Publication number
- JPH0454982U JPH0454982U JP9680490U JP9680490U JPH0454982U JP H0454982 U JPH0454982 U JP H0454982U JP 9680490 U JP9680490 U JP 9680490U JP 9680490 U JP9680490 U JP 9680490U JP H0454982 U JPH0454982 U JP H0454982U
- Authority
- JP
- Japan
- Prior art keywords
- oil tank
- oil
- pump
- hydraulic
- concrete
- 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
- 238000007599 discharging Methods 0.000 claims 1
- 230000009977 dual effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Reciprocating Pumps (AREA)
Description
第１図は本考案の実施例に係わるコンクリート
ポンプのダブル油圧シリンダ閉回路を示す回路構
成図である。第２図は第１図の油タンク及び閉油
タンクを示す斜視図である。第３図は従来におけ
るコンクリートポンプのコンクリート移送用シリ
ンダを示す断面図である。第４図は従来における
コンクリートポンプのダブル油圧シリンダ閉回路
を示す回路構成図である。
主要な部分の符号の説明、１……ホツパ、１Ａ
……コンクリート輸送管、２，３……コンクリー
ト移送用シリンダ、４，５……油圧シリンダ、６
……弁駆動シリンダ、６Ｃ……流路切換弁、４Ｂ
，５Ｂ……作動室、４Ｃ，５Ｃ……作動室、７…
…第１の吐出配管、８……油タンク、９……第１
の吸入配管、１０……第１の駆動ポンプ、１４…
…供給管、１５……閉油タンク、１６……吐出管
。
FIG. 1 is a circuit diagram showing a double hydraulic cylinder closed circuit of a concrete pump according to an embodiment of the present invention. FIG. 2 is a perspective view showing the oil tank and closed oil tank of FIG. 1. FIG. 3 is a sectional view showing a concrete transfer cylinder of a conventional concrete pump. FIG. 4 is a circuit diagram showing a double hydraulic cylinder closed circuit of a conventional concrete pump. Explanation of symbols of main parts, 1...Hoppa, 1A
... Concrete transport pipe, 2, 3 ... Concrete transport cylinder, 4, 5 ... Hydraulic cylinder, 6
...Valve drive cylinder, 6C...Flow path switching valve, 4B
, 5B... Working chamber, 4C, 5C... Working chamber, 7...
...First discharge pipe, 8...Oil tank, 9...First
suction piping, 10...first driving pump, 14...
...Supply pipe, 15...Closed oil tank, 16...Discharge pipe.
Claims (1)
ンダにより交互に吸排出作動される２連のコンク
リート移送用シリンダと、上記各コンクリート移
送用シリンダをホツパとコンクリート輸送管とに
交互に接続する流路切換弁とを設け、上記両油圧
シリンダのヘツド側の作動室を切換弁を介して油
タンクと駆動ポンプにそれぞれ接続し、前記両油
圧シリンダのロツド側の作動室に連通管を接続し
、この連通管に、供給管の一端側を接続して油を
封入するとともに、この供給管に、前記両油圧シ
リンダのロツド側の作動室内の封入油を排出する
吐出管の一端側を接続し、前記駆動ポンプを作動
させて油タンクから前記各油圧シリンダのヘツド
側に油を供給し、同時に、流路切換弁を作動させ
る弁駆動シリンダに前記油タンクまたは他の油タ
ンクから油を供給して、各コンクリート移送用シ
リンダから交互に生コンクリートをコンクリート
輸送管に吐出させるコンクリートポンプにおいて
、前記油タンクとは独立の閉油タンクを配設し、
この閉油タンクに、前記供給管の他端側を接続す
るとともに、前記吐出管の他端側を接続したこと
を特徴とするコンクリートポンプのダブル油圧シ
リンダ閉回路。 (2) 両油圧シリンダまたは弁駆動シリンダと油
タンクとの間を流れる油により回転する油圧モー
タと、この油圧モータにより作動する油圧ポンプ
とからなる２連ポンプ・モータの油圧ポンプを、
供給管の途中に介装したことを特徴とする請求項
１記載のコンクリートポンプのダブル油圧シリン
ダ閉回路。[Scope of Claim for Utility Model Registration] (1) Two concrete transfer cylinders that are alternately sucked and discharged by a pair of hydraulic cylinders that operate in opposite phases, and a hopper and a concrete transfer pipe that connect each of the concrete transfer cylinders. The working chambers on the head side of both hydraulic cylinders are connected to the oil tank and the drive pump through the switching valves, and the working chambers on the rod side of both hydraulic cylinders are connected to the oil tank and the drive pump, respectively. A communication pipe is connected to the communication pipe, one end side of a supply pipe is connected to the communication pipe and oil is sealed therein, and a discharge pipe is connected to the supply pipe for discharging the sealed oil in the working chambers on the rod side of both the hydraulic cylinders. One end side is connected, and the drive pump is operated to supply oil from the oil tank to the head side of each of the hydraulic cylinders, and at the same time, the oil tank or other oil is connected to the valve drive cylinder that operates the flow path switching valve. In a concrete pump that supplies oil from a tank and alternately discharges fresh concrete from each concrete transfer cylinder into a concrete transfer pipe, a closed oil tank independent of the oil tank is provided,
A double hydraulic cylinder closed circuit for a concrete pump, characterized in that the other end of the supply pipe is connected to the closed oil tank, and the other end of the discharge pipe is connected to the closed oil tank. (2) A hydraulic pump with a dual pump/motor consisting of a hydraulic motor rotated by oil flowing between both hydraulic cylinders or a valve drive cylinder and an oil tank, and a hydraulic pump operated by this hydraulic motor,
2. The double hydraulic cylinder closed circuit for a concrete pump according to claim 1, wherein the double hydraulic cylinder closed circuit is interposed in the middle of a supply pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990096804U JP2510203Y2 (en) | 1990-09-14 | 1990-09-14 | Double hydraulic cylinder closed circuit of concrete pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990096804U JP2510203Y2 (en) | 1990-09-14 | 1990-09-14 | Double hydraulic cylinder closed circuit of concrete pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0454982U true JPH0454982U (en) | 1992-05-12 |
| JP2510203Y2 JP2510203Y2 (en) | 1996-09-11 |
Family
ID=31836625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990096804U Expired - Lifetime JP2510203Y2 (en) | 1990-09-14 | 1990-09-14 | Double hydraulic cylinder closed circuit of concrete pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2510203Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58144081U (en) * | 1982-03-24 | 1983-09-28 | 石川島播磨重工業株式会社 | Concrete pump hydraulic cylinder stroke automatic adjustment device |
| JPS59105065U (en) * | 1982-12-29 | 1984-07-14 | 石川島播磨重工業株式会社 | Sealed circuit oil replenishment device for reciprocating pumps |
-
1990
- 1990-09-14 JP JP1990096804U patent/JP2510203Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58144081U (en) * | 1982-03-24 | 1983-09-28 | 石川島播磨重工業株式会社 | Concrete pump hydraulic cylinder stroke automatic adjustment device |
| JPS59105065U (en) * | 1982-12-29 | 1984-07-14 | 石川島播磨重工業株式会社 | Sealed circuit oil replenishment device for reciprocating pumps |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2510203Y2 (en) | 1996-09-11 |
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