JPS5590703A - Oil hydraulic circuit of oil hydraulic shovel - Google Patents
Oil hydraulic circuit of oil hydraulic shovelInfo
- Publication number
- JPS5590703A JPS5590703A JP16001078A JP16001078A JPS5590703A JP S5590703 A JPS5590703 A JP S5590703A JP 16001078 A JP16001078 A JP 16001078A JP 16001078 A JP16001078 A JP 16001078A JP S5590703 A JPS5590703 A JP S5590703A
- Authority
- JP
- Japan
- Prior art keywords
- valves
- valve
- arm
- oil hydraulic
- selector valve
- 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
PURPOSE: To make sure of swiveling operation irrespective of arm load at the time of simultaneous operation with swiveling arm, while making it possible to perform digging, pressing bucket to the surface of wall, by putting swiveling force at the maximum produced by relief valve.
CONSTITUTION: Oil hydraulic pumps 100 and 99 are connected with multiple valves 50 and 60 which send the oil discharged by the former to actuator. Arm selector valve 51 connected with arm cylinder 7, bucket selector valve 52 connected with bucket cylinder 6, boom selector valve 53 connected with boom cylinder 6 and traveling selector valve 54 connected with traveling motor 31 all are connected in parallel through line c linking to pump 100. Other valves 61W63 are connected in parallel through line d linking to pump 99. Line e on the unload side of pressure- reducing-type preferential valve 27 is connected with valve 51, and bent-type unload valves 15, 25 as well as bent-type relief valves 16, 26 having the same level of setting pressure as the pressure-loss of multiple valves 50 and 60 are built in these valves.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16001078A JPS5590703A (en) | 1978-12-27 | 1978-12-27 | Oil hydraulic circuit of oil hydraulic shovel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16001078A JPS5590703A (en) | 1978-12-27 | 1978-12-27 | Oil hydraulic circuit of oil hydraulic shovel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5590703A true JPS5590703A (en) | 1980-07-09 |
Family
ID=15706017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16001078A Pending JPS5590703A (en) | 1978-12-27 | 1978-12-27 | Oil hydraulic circuit of oil hydraulic shovel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5590703A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012033721A3 (en) * | 2010-09-08 | 2012-06-07 | Caerpillar Inc. | Multi-function wheel loader linkage control with optimized power management |
| CN102979771A (en) * | 2012-12-26 | 2013-03-20 | 中联重科股份有限公司 | Single-pump multi-motor closed hydraulic system and construction machinery including the hydraulic system |
| CN102996539A (en) * | 2012-12-26 | 2013-03-27 | 中联重科股份有限公司 | Single-pump multi-motor one-way rotary closed hydraulic system and construction machinery including it |
-
1978
- 1978-12-27 JP JP16001078A patent/JPS5590703A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012033721A3 (en) * | 2010-09-08 | 2012-06-07 | Caerpillar Inc. | Multi-function wheel loader linkage control with optimized power management |
| US8336232B2 (en) | 2010-09-08 | 2012-12-25 | Caterpillar Inc. | Multi-function wheel loader linkage control with optimized power management |
| CN102979771A (en) * | 2012-12-26 | 2013-03-20 | 中联重科股份有限公司 | Single-pump multi-motor closed hydraulic system and construction machinery including the hydraulic system |
| CN102996539A (en) * | 2012-12-26 | 2013-03-27 | 中联重科股份有限公司 | Single-pump multi-motor one-way rotary closed hydraulic system and construction machinery including it |
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