JPS62181702U - - Google Patents
Info
- Publication number
- JPS62181702U JPS62181702U JP6083987U JP6083987U JPS62181702U JP S62181702 U JPS62181702 U JP S62181702U JP 6083987 U JP6083987 U JP 6083987U JP 6083987 U JP6083987 U JP 6083987U JP S62181702 U JPS62181702 U JP S62181702U
- Authority
- JP
- Japan
- Prior art keywords
- solenoid
- back pressure
- valve
- brake circuit
- capacity pump
- 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 6
Landscapes
- Fluid-Pressure Circuits (AREA)
Description
第１図は従来の水平移動する重量物シリンダの
ブレーキ回路の１例を示す回路図、第２図は本考
案の実施例を示すブレーキ回路図、第３図は従来
と本考案に於けるブレーキ回路の特性線図、第４
図は従来と本考案に於けるシリンダ速度と時間及
び背圧と時間との関係を示す線図である。
図の主要部分の説明、１……シリンダ、２……
ラム、３……カウンタバランス弁、４……第１ソ
レノイド付方向切換弁、５……第２ソレノイド付
方向切換弁、６……大容量ポンプ、７……小容量
ポンプ、８……可変絞り、Ａ……シリンダのラム
を挾んで背圧側の反対側、Ｂ……シリンダの背圧
側。
Fig. 1 is a circuit diagram showing an example of a conventional brake circuit for a horizontally moving heavy cylinder, Fig. 2 is a brake circuit diagram showing an embodiment of the present invention, and Fig. 3 is a brake circuit diagram of the conventional brake and the brake of the present invention. Circuit characteristic diagram, 4th
The figure is a diagram showing the relationship between cylinder speed and time, and back pressure and time in the prior art and the present invention. Explanation of the main parts of the diagram, 1...Cylinder, 2...
Ram, 3... Counterbalance valve, 4... Directional switching valve with first solenoid, 5... Directional switching valve with second solenoid, 6... Large capacity pump, 7... Small capacity pump, 8... Variable throttle , A... Opposite the back pressure side of the cylinder between the rams, B... The back pressure side of the cylinder.
Claims (1)
圧側及び同ラムを挾んでその反対側夫々に、大容
量ポンプ及びこれと並設された小容量ポンプを夫
々第１ソレノイド付方向切換弁を介して接続し、
かつ前記シリンダの背圧側と前記第１ソレノイド
付方向切換弁との間、及び同切換弁と前記大容量
ポンプとの間に、夫々カウンタバランス弁及び第
２ソレノイド付方向切換弁を介在させてなるブレ
ーキ回路に於いて、前記シリンダの背圧側と第１
ソレノイド付方向切換弁との間に前記カウンタバ
ランス弁と並列して可変絞りを配置したブレーキ
回路を設け、前記小容量ポンプがアンロードによ
る停止動作に入ると、同ブレーキ回路を流れる油
量を前記可変絞りの設定により制御して背圧の降
下を滑らかにするようにしたことを特徴とするブ
レーキ回路。 A large-capacity pump and a small-capacity pump installed in parallel are connected to the back pressure side of a heavy cylinder having a horizontally moving ram and to the opposite side of the ram, respectively, via a directional control valve with a first solenoid. death,
and a counterbalance valve and a second solenoid-equipped directional valve are interposed between the back pressure side of the cylinder and the first solenoid-equipped directional valve, and between the same solenoid-equipped directional valve and the large-capacity pump, respectively. In the brake circuit, the back pressure side of the cylinder and the first
A brake circuit in which a variable throttle is arranged in parallel with the counterbalance valve is provided between the directional control valve with a solenoid, and when the small capacity pump enters a stop operation due to unloading, the amount of oil flowing through the brake circuit is adjusted to A brake circuit characterized in that it is controlled by setting a variable throttle to smooth the drop in back pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6083987U JPS62181702U (en) | 1987-04-22 | 1987-04-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6083987U JPS62181702U (en) | 1987-04-22 | 1987-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62181702U true JPS62181702U (en) | 1987-11-18 |
Family
ID=30893620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6083987U Pending JPS62181702U (en) | 1987-04-22 | 1987-04-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62181702U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5039238A (en) * | 1973-08-13 | 1975-04-11 | ||
| JPS526010B2 (en) * | 1971-12-29 | 1977-02-18 | ||
| JPS5328891U (en) * | 1976-08-20 | 1978-03-11 |
-
1987
- 1987-04-22 JP JP6083987U patent/JPS62181702U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS526010B2 (en) * | 1971-12-29 | 1977-02-18 | ||
| JPS5039238A (en) * | 1973-08-13 | 1975-04-11 | ||
| JPS5328891U (en) * | 1976-08-20 | 1978-03-11 |
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