JPS5947771U - Construction machinery hydraulic circuit - Google Patents
Construction machinery hydraulic circuitInfo
- Publication number
- JPS5947771U JPS5947771U JP14105982U JP14105982U JPS5947771U JP S5947771 U JPS5947771 U JP S5947771U JP 14105982 U JP14105982 U JP 14105982U JP 14105982 U JP14105982 U JP 14105982U JP S5947771 U JPS5947771 U JP S5947771U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- boom
- speed increasing
- arm
- cylinder
- 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
- Operation Control Of Excavators (AREA)
- 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
図面はこの考案の一実施例を示す回路図である。
１．２は油圧ポンプ、４は右走行操作弁、５はパケット
操作弁、６はブーム操作弁、７はブームシリンダ、８は
アーム増速弁、１０はアームシリンダ、１２は左走行操
作弁、１３はアーム操作弁、１４は旋回操作弁、１５は
ブーム増速弁、１９゜２０は切換え弁。The drawing is a circuit diagram showing an embodiment of this invention. 1.2 is a hydraulic pump, 4 is a right travel operation valve, 5 is a packet operation valve, 6 is a boom operation valve, 7 is a boom cylinder, 8 is an arm speed increasing valve, 10 is an arm cylinder, 12 is a left travel operation valve, 13 is an arm operation valve, 14 is a swing operation valve, 15 is a boom speed increasing valve, and 19° and 20 are switching valves.
Claims (1)
走行操作弁１２，４、パケット操作弁５、ブーム操作弁
６、アーム操作弁１３及び旋回操作弁１４を介して左右
走行モータやブームシリンダ７、アームシリンダ１０及
び旋回モータへ供給すると共に、一部をアーム増速弁８
及びブーム増速弁１５よりアームシリンダ１０及びブー
ムシリンダ７側へ合流させて、これらを増速するものに
おいて、上記アーム増速弁８及びブーム増速弁１５の少
なくとも一方をパイロット切換え弁とし、かつこの増速
弁８，１５を油圧ポンプ１，２よりパイロット圧を導入
した小容量の切換え弁１９゜２０によりパイロット操作
してなる建設機械の作業機油圧回路。The hydraulic pressure discharged from the plurality of hydraulic pumps 1 and 2 is applied to the left and right travel motors and the boom through the left and right travel operation valves 12 and 4, the packet operation valve 5, the boom operation valve 6, the arm operation valve 13, and the swing operation valve 14. In addition to supplying the cylinder 7, arm cylinder 10 and swing motor, a part of the arm speed increasing valve 8
and the boom speed increasing valve 15 merges with the arm cylinder 10 and boom cylinder 7 side to speed up these, in which at least one of the arm speed increasing valve 8 and the boom speed increasing valve 15 is a pilot switching valve, and A work machine hydraulic circuit for construction machinery in which the speed increasing valves 8 and 15 are pilot operated by small capacity switching valves 19 and 20 to which pilot pressure is introduced from hydraulic pumps 1 and 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14105982U JPS5947771U (en) | 1982-09-20 | 1982-09-20 | Construction machinery hydraulic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14105982U JPS5947771U (en) | 1982-09-20 | 1982-09-20 | Construction machinery hydraulic circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5947771U true JPS5947771U (en) | 1984-03-29 |
Family
ID=30315601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14105982U Pending JPS5947771U (en) | 1982-09-20 | 1982-09-20 | Construction machinery hydraulic circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5947771U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011074970A (en) * | 2009-09-29 | 2011-04-14 | Kyb Co Ltd | Hydraulic circuit device |
| JP2015086958A (en) * | 2013-10-31 | 2015-05-07 | 川崎重工業株式会社 | Hydraulic shovel drive system |
-
1982
- 1982-09-20 JP JP14105982U patent/JPS5947771U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011074970A (en) * | 2009-09-29 | 2011-04-14 | Kyb Co Ltd | Hydraulic circuit device |
| JP2015086958A (en) * | 2013-10-31 | 2015-05-07 | 川崎重工業株式会社 | Hydraulic shovel drive system |
| WO2015064026A1 (en) * | 2013-10-31 | 2015-05-07 | 川崎重工業株式会社 | Hydraulic shovel drive system |
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