JPS6391704U - - Google Patents
Info
- Publication number
- JPS6391704U JPS6391704U JP18658386U JP18658386U JPS6391704U JP S6391704 U JPS6391704 U JP S6391704U JP 18658386 U JP18658386 U JP 18658386U JP 18658386 U JP18658386 U JP 18658386U JP S6391704 U JPS6391704 U JP S6391704U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- chamber
- side chamber
- main
- bottom side
- 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
- 238000013016 damping Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Lifting Devices For Agricultural Implements (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Description
図面第1図はこの考案の実施例を示す回路図、
第2,3図は従来の装置を示すもので、第2図は
回路図、第3図は除雪機のオーガの高さ位置を制
御するリフトシリンダの取り付け状態を示す部分
図である。
P……ポンプ、l1,l2……メイン通路、V
……切換弁、S1……第1シリンダであるローリ
ングシリンダ、15……ボトム側室、18……ロ
ツド側室、S2……第2シリンダであるリフトシ
リンダ、16……ボトム側室、17……ロツド側
室、20……メインピストン、21……緩衝弁、
22……チエツク弁、23……フリーピストン。
Figure 1 is a circuit diagram showing an embodiment of this invention;
2 and 3 show a conventional device, with FIG. 2 being a circuit diagram and FIG. 3 being a partial view showing how a lift cylinder for controlling the height position of an auger of a snow blower is attached. P... pump, l 1 , l 2 ... main passage, V
...Switching valve, S1 ...Rolling cylinder which is the first cylinder, 15...Bottom side chamber, 18...Rod side chamber, S2 ...Lift cylinder which is the second cylinder, 16...Bottom side chamber, 17... Rod side chamber, 20... Main piston, 21... Buffer valve,
22...Check valve, 23...Free piston.
Claims (1)
路を接続し、この一方のメイン通路には切換弁を
接続するとともに、この切換弁は、メイン通路と
第1シリンダのボトム側室あるいはロツド側室の
いずれか一方の室とを連通させ、第2シリンダの
ボトム側室とロツド側室との両室を閉塞する切換
位置と、第1シリンダの上記一方の室を閉塞する
とともに、第2シリンダの上記両室を両メイン通
路に接続する切換位置とに切り換え可能にし、し
かも、上記他方のメイン通路は、第1シリンダの
他方の室に直接連通させてなり、かつ、上記第2
シリンダは、メインピストンで区画された上記ボ
トム側室にフリーピストンを内装するとともに、
上記メインピストンには、ロツド側室の流体がボ
トム側室に流れるときに減衰力を発揮する緩衝弁
と、フリーピストン側からロツド側室への流通の
みを許容するチエツク弁とを並列に設けてなるシ
リンダの制御装置。 A pair of main passages are connected to a pump capable of forward and reverse rotation, and a switching valve is connected to one of the main passages, and the switching valve is connected to either the main passage, the bottom side chamber of the first cylinder, or the rod side chamber. A switching position in which one of the chambers of the second cylinder is communicated with the other chamber and both the bottom side chamber and the rod side chamber of the second cylinder are closed, and one chamber is closed in the first cylinder and both chambers of the second cylinder are closed. The other main passage is in direct communication with the other chamber of the first cylinder, and the second main passage is in direct communication with the other chamber of the first cylinder.
The cylinder has a free piston inside the bottom side chamber divided by the main piston, and
The main piston is equipped with a buffer valve that exerts a damping force when the fluid in the rod side chamber flows to the bottom side chamber, and a check valve that only allows flow from the free piston side to the rod side chamber. Control device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18658386U JPS6391704U (en) | 1986-12-03 | 1986-12-03 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18658386U JPS6391704U (en) | 1986-12-03 | 1986-12-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6391704U true JPS6391704U (en) | 1988-06-14 |
Family
ID=31136269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18658386U Pending JPS6391704U (en) | 1986-12-03 | 1986-12-03 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6391704U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015178860A (en) * | 2014-03-19 | 2015-10-08 | 株式会社ショーワ | hydraulic actuator |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55115606A (en) * | 1979-02-26 | 1980-09-05 | Hitachi Constr Mach Co Ltd | Closed hydraulic circuit for controlling operation of pump |
JPS5659006A (en) * | 1979-10-19 | 1981-05-22 | Hitachi Constr Mach Co Ltd | Controlling method of hydraulic circuit for controlling pump |
-
1986
- 1986-12-03 JP JP18658386U patent/JPS6391704U/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55115606A (en) * | 1979-02-26 | 1980-09-05 | Hitachi Constr Mach Co Ltd | Closed hydraulic circuit for controlling operation of pump |
JPS5659006A (en) * | 1979-10-19 | 1981-05-22 | Hitachi Constr Mach Co Ltd | Controlling method of hydraulic circuit for controlling pump |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015178860A (en) * | 2014-03-19 | 2015-10-08 | 株式会社ショーワ | hydraulic actuator |