JPS60116405U - Natural descent prevention hydraulic circuit - Google Patents
Natural descent prevention hydraulic circuitInfo
- Publication number
- JPS60116405U JPS60116405U JP227484U JP227484U JPS60116405U JP S60116405 U JPS60116405 U JP S60116405U JP 227484 U JP227484 U JP 227484U JP 227484 U JP227484 U JP 227484U JP S60116405 U JPS60116405 U JP S60116405U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- pilot
- side chamber
- check valve
- bypass
- 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
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来例を示す回路図、第２図は本考案の実施例
を示す回路図である。
１は油圧シリンダ、２は上げ側室、３は下げ側室、６は
パイロット逆止弁、７は上げ何回路、８はパイロット回
路、９は下げ何回路、１０は絞り、１１は逆止弁、１２
はバイパス回路。FIG. 1 is a circuit diagram showing a conventional example, and FIG. 2 is a circuit diagram showing an embodiment of the present invention. 1 is a hydraulic cylinder, 2 is a raising side chamber, 3 is a lowering side chamber, 6 is a pilot check valve, 7 is a raising circuit, 8 is a pilot circuit, 9 is a lowering circuit, 10 is a throttle, 11 is a check valve, 12
is a bypass circuit.
Claims (1)
ることにより重量物を上げ、下げるようにした油圧アク
チェータの上記上げ側室２に接続する上げ何回路７にパ
イロット逆止弁６を介装し、このパイロット逆止弁６の
パイロット回路８を下げ側室３に接続する下げ何回路９
に接続した自然降下防止回路において、上記パイロット
回路８に絞り１０を介装すると共に、このパイロット回
路８に絞り１０をバイパスするバイパス回路１２を設け
、このバイパス回路１２にパイロット圧作用方向に流れ
を許す逆止弁１１を介装したことを特徴とする自然降下
防止油圧回路。A pilot check valve 6 is interposed in a lifting circuit 7 connected to the lifting side chamber 2 of a hydraulic actuator that raises and lowers a heavy object by selectively supplying pressure oil to the lifting side chamber 2 or the lowering side chamber 3. A lower circuit 9 connects the pilot circuit 8 of this pilot check valve 6 to the lower side chamber 3.
In the natural fall prevention circuit connected to the pilot circuit 8, a throttle 10 is interposed in the pilot circuit 8, a bypass circuit 12 is provided in the pilot circuit 8 to bypass the throttle 10, and a flow is directed to the pilot pressure acting direction in the bypass circuit 12. A hydraulic circuit for preventing natural descent, characterized in that a check valve 11 is installed to prevent natural descent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP227484U JPS60116405U (en) | 1984-01-13 | 1984-01-13 | Natural descent prevention hydraulic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP227484U JPS60116405U (en) | 1984-01-13 | 1984-01-13 | Natural descent prevention hydraulic circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60116405U true JPS60116405U (en) | 1985-08-06 |
Family
ID=30475794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP227484U Pending JPS60116405U (en) | 1984-01-13 | 1984-01-13 | Natural descent prevention hydraulic circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60116405U (en) |
-
1984
- 1984-01-13 JP JP227484U patent/JPS60116405U/en active Pending
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