JPS6417063U - - Google Patents
Info
- Publication number
- JPS6417063U JPS6417063U JP11223887U JP11223887U JPS6417063U JP S6417063 U JPS6417063 U JP S6417063U JP 11223887 U JP11223887 U JP 11223887U JP 11223887 U JP11223887 U JP 11223887U JP S6417063 U JPS6417063 U JP S6417063U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- relief valve
- main pump
- pump
- hydraulic drive
- 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 2
Landscapes
- Control Of Fluid Gearings (AREA)
Description
第１図は本考案の実施例を示す回路図、第２図
は従来例を示す回路図、第３図は同じくポンプ要
部の断面図である。
１……主ポンプ、２……補助ポンプ、３……モ
ータ、４……閉回路、５……サーボレギユレータ
、６……回路、７Ａ，７Ｂ……チエツク弁、８…
…第１のリリーフ弁、１５……第２のリリーフ弁
。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, FIG. 2 is a circuit diagram showing a conventional example, and FIG. 3 is a sectional view of the main parts of the pump. 1... Main pump, 2... Auxiliary pump, 3... Motor, 4... Closed circuit, 5... Servo regulator, 6... Circuit, 7A, 7B... Check valve, 8...
...first relief valve, 15...second relief valve.
Claims (1)
ンプと閉回路により接続されるモータを備え、前
記補助ポンプからの吐出油を前記主ポンプのサー
ボレギユレータに導入すると共にその下流よりチ
エツク弁を介して前記閉回路に導入するようにそ
れぞれ回路接続し、かつこの回路の最低圧を保証
する第１のリリーフ弁を設けた油圧駆動回路にお
いて、前記チエツク弁とサーボレギユレータとの
間の回路に前記第１のリリーフ弁よりも設定圧力
の高い第２のリリーフ弁を介装したことを特徴と
する油圧駆動回路。 It is equipped with a main pump and an auxiliary pump, as well as a motor connected to the main pump through a closed circuit, and the oil discharged from the auxiliary pump is introduced into the servo regulator of the main pump, and the oil is introduced from downstream thereof through a check valve. In the hydraulic drive circuit, the circuit between the check valve and the servo regulator is provided with a first relief valve that is connected to the circuit so as to be introduced into the closed circuit, and that guarantees a minimum pressure in this circuit. A hydraulic drive circuit characterized in that a second relief valve having a higher set pressure than the first relief valve is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11223887U JPS6417063U (en) | 1987-07-22 | 1987-07-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11223887U JPS6417063U (en) | 1987-07-22 | 1987-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6417063U true JPS6417063U (en) | 1989-01-27 |
Family
ID=31350993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11223887U Pending JPS6417063U (en) | 1987-07-22 | 1987-07-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6417063U (en) |
-
1987
- 1987-07-22 JP JP11223887U patent/JPS6417063U/ja active Pending
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