CN102536966A - Hydraulic system for adjusting work pressure - Google Patents
Hydraulic system for adjusting work pressure Download PDFInfo
- Publication number
- CN102536966A CN102536966A CN2011104551419A CN201110455141A CN102536966A CN 102536966 A CN102536966 A CN 102536966A CN 2011104551419 A CN2011104551419 A CN 2011104551419A CN 201110455141 A CN201110455141 A CN 201110455141A CN 102536966 A CN102536966 A CN 102536966A
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- Prior art keywords
- hydraulic system
- valve
- pressure
- oil pump
- input end
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Abstract
The invention discloses a hydraulic system for adjusting work pressure, which comprises an oil pump, an overflow valve, a remote pressure regulating valve and an electromagnetic valve. The oil pump leads to the middle of a main oil path, an input end of the overflow valve is connected with an output end of the oil pump, an output end of the overflow valve is connected with an input end of the remote pressure regulating valve, an output end of the remote pressure regulating valve is connected with an input end of the electromagnetic valve, local pressure of the hydraulic system is controlled via the overflow valve, and the pressure of the hydraulic system keeps constant or the maximum value of the pressure of the hydraulic system is limited. The hydraulic system is high in work efficiency and is stable and reliable, and pressure limiting protection of the total system can be realized.
Description
Technical field
The present invention relates to a kind of hydraulic system of regulating working pressure.
Background technique
In the hydraulic system, mainly utilize pressure controlled valve to come control system pressure, satisfying the requirement of workpiece in power or torque, but a lot of hydraulic system pressures controls are unstable on the market, and reliability is bad, can not voltage-limiting protection.
Summary of the invention
Goal of the invention: the objective of the invention is provides a kind of hydraulic system of regulating working pressure in order to solve the deficiency of existing technology, and stable system pressure is realized voltage-limiting protection.
Technological scheme: in order to realize above purpose, a kind of hydraulic system of regulating working pressure of the present invention, it comprises oil pump; Relief valve; Remote pressure regulating valve and solenoid valve, described oil pump leads to the working connection neutral position, and the input end of relief valve links to each other with the output terminal of oil pump; The output terminal of relief valve links to each other with the input end of remote pressure regulating valve; The output terminal of remote pressure regulating valve links to each other with the input end of solenoid valve, through the local compression of relief valve controlled hydraulic system, makes hydraulic system keep constant or limits its maximum value.
Beneficial effect: a kind of hydraulic system of regulating working pressure provided by the invention, high working efficiency, reliable and stable, can realize the voltage-limiting protection of whole system.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, further illustrate the present invention.
Structural representation of the present invention as shown in Figure 1, it comprises oil pump 1, relief valve 2; Remote pressure regulating valve 3 and solenoid valve 4, described oil pump 1 leads to the working connection neutral position, and the input end of relief valve 2 links to each other with the output terminal of oil pump 1; The output terminal of relief valve 2 links to each other with the input end of remote pressure regulating valve 3; The output terminal of remote pressure regulating valve 3 links to each other with the input end of solenoid valve 4, through the local compression of relief valve 2 controlled hydraulic system, makes hydraulic system keep constant or limits its maximum value.
As shown in Figure 1; When solenoid valve 4 cut out, the outlet pressure of pump 1 was decided force value by 2 of relief valves, after the solenoid valve energising is switched; If the adjustment pressure of remote pressure regulating valve 3 is lower than the pressure adjustment of relief valve 2; Then the outlet pressure of pump 1 is set up by remote pressure regulating valve 3, and like the adjustment pressure of remote pressure regulating valve 3 set pressure greater than relief valve 2, then remote pressure regulating valve 3 is just inoperative.
In addition, solenoid valve 4 prevents between relief valve 2 and remote pressure regulating valve 3, then when pressure switches, possibly produce bigger pressure surge and impact.
The foregoing description only is explanation technical conceive of the present invention and characteristics, its objective is to let to be familiar with these those skilled in the art and can to understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalents that spirit has been done according to the present invention or modification all should be encompassed within protection scope of the present invention.
Claims (1)
1. hydraulic system of regulating working pressure; It is characterized in that: it comprises oil pump (1), relief valve (2), remote pressure regulating valve (3) and solenoid valve (4); Described oil pump (1) leads to the working connection neutral position; The input end of relief valve (2) links to each other with the output terminal of oil pump (1), and the output terminal of relief valve (2) links to each other with the input end of remote pressure regulating valve (3), and the output terminal of remote pressure regulating valve (3) links to each other with the input end of solenoid valve (4); Through the local compression of relief valve (2) controlled hydraulic system, make hydraulic system keep constant or limit its maximum value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104551419A CN102536966A (en) | 2011-12-31 | 2011-12-31 | Hydraulic system for adjusting work pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104551419A CN102536966A (en) | 2011-12-31 | 2011-12-31 | Hydraulic system for adjusting work pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102536966A true CN102536966A (en) | 2012-07-04 |
Family
ID=46344692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104551419A Pending CN102536966A (en) | 2011-12-31 | 2011-12-31 | Hydraulic system for adjusting work pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102536966A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788049A (en) * | 2012-07-19 | 2012-11-21 | 北京理工大学 | Hydraulic control module of electrohydraulic control system |
| CN104827877A (en) * | 2014-12-18 | 2015-08-12 | 北汽福田汽车股份有限公司 | Power assembly mounting system and vehicle |
| CN109707691A (en) * | 2019-02-18 | 2019-05-03 | 西安庆安航空试验设备有限责任公司 | A kind of pressure control device of thermal-hydraulic system |
-
2011
- 2011-12-31 CN CN2011104551419A patent/CN102536966A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788049A (en) * | 2012-07-19 | 2012-11-21 | 北京理工大学 | Hydraulic control module of electrohydraulic control system |
| CN102788049B (en) * | 2012-07-19 | 2015-04-15 | 北京理工大学 | Hydraulic control module of electrohydraulic control system |
| CN104827877A (en) * | 2014-12-18 | 2015-08-12 | 北汽福田汽车股份有限公司 | Power assembly mounting system and vehicle |
| CN109707691A (en) * | 2019-02-18 | 2019-05-03 | 西安庆安航空试验设备有限责任公司 | A kind of pressure control device of thermal-hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120704 |