JPH02120557U - - Google Patents
Info
- Publication number
- JPH02120557U JPH02120557U JP3013689U JP3013689U JPH02120557U JP H02120557 U JPH02120557 U JP H02120557U JP 3013689 U JP3013689 U JP 3013689U JP 3013689 U JP3013689 U JP 3013689U JP H02120557 U JPH02120557 U JP H02120557U
- Authority
- JP
- Japan
- Prior art keywords
- vehicle body
- oil chamber
- operation switching
- check valve
- side oil
- 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
- 238000007599 discharging Methods 0.000 claims 1
- 230000006641 stabilisation Effects 0.000 claims 1
- 238000011105 stabilization Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Component Parts Of Construction Machinery (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第1図は本考案の第1の実施例を示す油圧回路
図、第2図は第2の実施例を示す排土板装置の部
分斜視図、第3図ないし第5図は従来技術を示し
、第3図はホイール式油圧シヨベルの全体図、第
4図はシヤーシの後部に設けたアウトリガ装置の
斜視図、第5図は油圧回路図である。
13……アウトリガ装置(車体安定保持機構)
、15……アウトリガ、16……アウトリガシリ
ンダ(シリンダ装置)、17……油圧ポンプ、1
9……コントロールバルブ、21,22,23,
24……切換弁、25……操作切換弁、26A,
26B……管路、27A,27B,28A,28
B……分岐管路、29……逆止弁装置、29A,
29B……逆止弁、31A,31B……絞り管路
、32A,32B……絞り、41……排土板装置
(車体安定保持機構)、43……ブレード、44
……ブレードシリンダ(シリンダ装置)、A……
ロツド側油室、B……ボトム側油室。
Fig. 1 is a hydraulic circuit diagram showing a first embodiment of the present invention, Fig. 2 is a partial perspective view of a soil removal plate device showing a second embodiment, and Figs. 3 to 5 show the prior art. 3 is an overall view of the wheeled hydraulic excavator, FIG. 4 is a perspective view of an outrigger device provided at the rear of the chassis, and FIG. 5 is a hydraulic circuit diagram. 13... Outrigger device (vehicle body stability holding mechanism)
, 15... Outrigger, 16... Outrigger cylinder (cylinder device), 17... Hydraulic pump, 1
9...Control valve, 21, 22, 23,
24...Switching valve, 25...Operation switching valve, 26A,
26B...Pipe line, 27A, 27B, 28A, 28
B... Branch pipe line, 29... Check valve device, 29A,
29B... Check valve, 31A, 31B... Throttle pipe, 32A, 32B... Throttle, 41... Earth removal plate device (vehicle body stability holding mechanism), 43... Blade, 44
...Blade cylinder (cylinder device), A...
Rod side oil chamber, B...Bottom side oil chamber.
Claims (1)
ることにより車体安定保持機構を作動させるシリ
ンダ装置と、該シリンダ装置のロツド側油室とボ
トム側油室とに接続された一対の管路と、他のア
クチユエータ操作用切換弁と共に油圧源に対して
パラレル接続され、該各管路を介して前記シリン
ダ装置に給排する圧油の方向を切換える車体安定
保持機構用の操作切換弁と、該操作切換弁とシリ
ンダ装置との間に位置して前記各管路の途中にそ
れぞれ設けられた一対の逆止弁を有し、前記各管
路のうち一方の管路内の圧力により一の逆止弁が
開弁するとき、この圧力で他の逆止弁を開弁させ
る逆止弁装置とからなる車体安定保持機構用油圧
回路において、前記各管路の途中には前記操作切
換弁と逆止弁装置との間に位置し、絞りを介して
タンクと接続される絞り管路を設けたことを特徴
とする車体安定保持機構用油圧回路。 A cylinder device that operates a vehicle body stability holding mechanism by supplying and discharging pressure oil to and from a rod side oil chamber and a bottom side oil chamber, and a pair of cylinder devices connected to the rod side oil chamber and the bottom side oil chamber of the cylinder device. An operation switching valve for a vehicle body stability holding mechanism that is connected in parallel to a hydraulic power source together with a pipe line and other actuator operation switching valves, and that switches the direction of pressure oil supplied to and discharged from the cylinder device via the respective pipe lines. and a pair of check valves located between the operation switching valve and the cylinder device and provided in the middle of each of the pipes, and the pressure in one of the pipes In a hydraulic circuit for a vehicle body stabilization mechanism, which includes a check valve device that opens another check valve using this pressure when one check valve opens, the operation switching switch is located in the middle of each of the pipes. A hydraulic circuit for a vehicle body stability holding mechanism, characterized in that a throttle conduit is provided between a valve and a check valve device and connected to a tank via a throttle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3013689U JPH02120557U (en) | 1989-03-16 | 1989-03-16 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3013689U JPH02120557U (en) | 1989-03-16 | 1989-03-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02120557U true JPH02120557U (en) | 1990-09-28 |
Family
ID=31254932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3013689U Pending JPH02120557U (en) | 1989-03-16 | 1989-03-16 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02120557U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008309212A (en) * | 2007-06-13 | 2008-12-25 | Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd | Outrigger control device of construction machinery |
-
1989
- 1989-03-16 JP JP3013689U patent/JPH02120557U/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008309212A (en) * | 2007-06-13 | 2008-12-25 | Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd | Outrigger control device of construction machinery |
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