JPS604659U - Power shovel hydraulic circuit system - Google Patents
Power shovel hydraulic circuit systemInfo
- Publication number
- JPS604659U JPS604659U JP9577683U JP9577683U JPS604659U JP S604659 U JPS604659 U JP S604659U JP 9577683 U JP9577683 U JP 9577683U JP 9577683 U JP9577683 U JP 9577683U JP S604659 U JPS604659 U JP S604659U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- block
- arm
- hydraulic pump
- operating
- 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.)
- Granted
Links
Landscapes
- Operation Control Of Excavators (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、第２図は従来のパワーショベルの油圧回路装置
の構成説明図、第３図は本考案−実施例゛の構成説明図
である。
１は第１油圧ポンプ、２は第２油圧ポンプ、３５はパケ
ット操作弁、３６はアーム高位操作弁、５９はブーム・
パケット優先切換弁。1 and 2 are explanatory diagrams of the configuration of a conventional hydraulic circuit device for a power shovel, and FIG. 3 is an explanatory diagram of the configuration of an embodiment of the present invention. 1 is a first hydraulic pump, 2 is a second hydraulic pump, 35 is a packet operation valve, 36 is an arm high level operation valve, 59 is a boom
Packet priority switching valve.
Claims (1)
ンプ１と、他方の操作弁ブロックＤに流量の供給を行う
第２油圧ポンプ２と、一方の操作弁ブロックＢに設けら
れ゛て他の操作弁とパラレル接続されたアーム低位操作
弁６１と、他方の操作弁ブロックＤに設けられてバルブ
スプール配列の最終列にパラレル面路で設けられたアー
ム高位操作弁３６と、他方の操作弁ブロックＤに設けら
れたバ、ケラト操作弁３５と、パケット操作弁７４又は
ブーム操作部７５とアーム操作部６５の同時操作時にパ
イロット圧で切換作動してアーム高位操作弁３６のパラ
レル通路１４１を絞ると共にスプールのフルストローク
時はパラレル通路１４１を閉じ且つ旋回操作弁９作動時
パイロット圧を受けてスプールの動きが妨げられるブー
ム・パケット優先切換弁５９とを備えたことを特徴とす
るパワーショベルの油圧回路装置。A first hydraulic pump 1 that supplies a flow rate to one operation valve block B, a second hydraulic pump 2 that supplies a flow rate to the other operation valve block D, and a second hydraulic pump 2 that is installed in one operation valve block B. An arm low operating valve 61 connected in parallel with the operating valve of the other operating valve, an arm high operating valve 36 provided in the other operating valve block D and provided in the last row of the valve spool arrangement in a parallel plane path, and the other operating valve When the kerat operation valve 35 and the packet operation valve 74 or the boom operation section 75 and the arm operation section 65 provided in the block D are operated simultaneously, the switching operation is activated by pilot pressure to narrow the parallel passage 141 of the arm high operation valve 36. and a boom/packet priority switching valve 59 that closes the parallel passage 141 when the spool is fully stroked and prevents the movement of the spool by receiving pilot pressure when the swing operation valve 9 is activated. circuit device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9577683U JPS604659U (en) | 1983-06-23 | 1983-06-23 | Power shovel hydraulic circuit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9577683U JPS604659U (en) | 1983-06-23 | 1983-06-23 | Power shovel hydraulic circuit system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS604659U true JPS604659U (en) | 1985-01-14 |
| JPH0352272Y2 JPH0352272Y2 (en) | 1991-11-12 |
Family
ID=30228559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9577683U Granted JPS604659U (en) | 1983-06-23 | 1983-06-23 | Power shovel hydraulic circuit system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS604659U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS559947U (en) * | 1978-07-06 | 1980-01-22 | ||
| JPS56125435U (en) * | 1980-02-26 | 1981-09-24 |
-
1983
- 1983-06-23 JP JP9577683U patent/JPS604659U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS559947U (en) * | 1978-07-06 | 1980-01-22 | ||
| JPS56125435U (en) * | 1980-02-26 | 1981-09-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0352272Y2 (en) | 1991-11-12 |
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