CN103216475A - Hydraulic closed circuit applying to double-hydraulic pump combined and separated drive - Google Patents
Hydraulic closed circuit applying to double-hydraulic pump combined and separated drive Download PDFInfo
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- CN103216475A CN103216475A CN2013101333286A CN201310133328A CN103216475A CN 103216475 A CN103216475 A CN 103216475A CN 2013101333286 A CN2013101333286 A CN 2013101333286A CN 201310133328 A CN201310133328 A CN 201310133328A CN 103216475 A CN103216475 A CN 103216475A
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- pilot operated
- check valve
- operated check
- pipeline
- hydraulic pump
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Abstract
The invention relates to a hydraulic closed circuit applying to double-hydraulic pump combined and separated drive. The hydraulic closed circuit comprises a first hydraulic pump, a second hydraulic pump and a hydraulic motor, and further comprises first, second, third and fourth pilot operated check valves, wherein the outlet of the first hydraulic pump is connected with the inlet of the first pilot operated check valve, and the inlet of the first hydraulic pump is connected with the inlet of the second pilot operated check valve; the outlet of the second hydraulic pump is connected with the inlet of the third pilot operated check valve, and the inlet of the second hydraulic pump is connected with the inlet of the fourth pilot operated check valve; the outlets of the first and third pilot operated check valves are connected with each other, and the outlets of the second and fourth pilot operated check valves are connected with each other; and the inlet of the hydraulic motor is connected onto a pipeline between the outlet of the first pilot operated check valve and the outlet of the third pilot operated check valve, and the outlet of the hydraulic motor is connected onto a pipeline between the outlet of the second pilot operated check valve and the outlet of the fourth pilot operated check valve. The circuit can realize the normal work by driving of two oil pumps at the same time or any one of the two oil pumps without any operation, and the two modes are flexible to switch.
Description
Technical field
The present invention relates to a kind of hydraulic closed loop, especially a kind of hydraulic closed loop that is applied to two hydraulic pump combination and separates driving.
Background technique
Present hydraulic closed loop is driven oil hydraulic motor 7 or is driven oil hydraulic motor 7 simultaneously by first oil hydraulic pump 2 and 2 two oil hydraulic pumps of second oil hydraulic pump by first oil hydraulic pump 1, as Fig. 1 and Fig. 2, this hydraulic closed loop can not be implemented under the situation that two oil hydraulic pumps drive simultaneously and freely switch to wherein hydraulic pump drive.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of being implemented in freely to switch to being applied to two hydraulic pump combination and separating the hydraulic closed loop that drives of a hydraulic pump drive wherein under the situation that two oil hydraulic pumps drive simultaneously.
According to technological scheme provided by the invention, the described hydraulic closed loop that is applied to two hydraulic pump combination and separates driving, comprise first oil hydraulic pump, second oil hydraulic pump and oil hydraulic motor, also be provided with first Pilot operated check valve, second Pilot operated check valve, the 3rd Pilot operated check valve and the 4th Pilot operated check valve, the inlet of the first hydraulic pressure delivery side of pump and first Pilot operated check valve joins by pipeline, the inlet of the inlet of first oil hydraulic pump and second Pilot operated check valve joins by pipeline, the inlet of the second hydraulic pressure delivery side of pump and the 3rd Pilot operated check valve joins by pipeline, the inlet of the inlet of second oil hydraulic pump and the 4th Pilot operated check valve joins by pipeline, the outlet of the outlet of first Pilot operated check valve and the 3rd Pilot operated check valve is joined by pipeline, the outlet of the outlet of second Pilot operated check valve and the 4th Pilot operated check valve is joined by pipeline, the inlet of described oil hydraulic motor is connected by pipeline on the pipeline between the outlet of the outlet of first Pilot operated check valve and the 3rd Pilot operated check valve, and the outlet of oil hydraulic motor is connected by pipeline on the pipeline between the outlet of the outlet of second Pilot operated check valve and the 4th Pilot operated check valve.
Guide's hydraulic fluid port of described first Pilot operated check valve is connected by pipeline on the pipeline between the inlet of the inlet of first oil hydraulic pump and second Pilot operated check valve.
Guide's hydraulic fluid port of described second Pilot operated check valve is connected by pipeline on the pipeline between the inlet of the first hydraulic pressure delivery side of pump and first Pilot operated check valve.
Guide's hydraulic fluid port of described the 3rd Pilot operated check valve is connected by pipeline on the pipeline between the inlet of the inlet of second oil hydraulic pump and the 4th Pilot operated check valve.
Guide's hydraulic fluid port of described the 4th Pilot operated check valve is connected by pipeline on the pipeline between the inlet of the second hydraulic pressure delivery side of pump and the 3rd Pilot operated check valve.
The present invention has realized that two table oil pumps drive simultaneously and proper functioning under any driving wherein, and does not need to do any operation, switches flexibly, can satisfy the usage requirement under the different operating modes.
Description of drawings
Fig. 1 is one of hydraulic closed loop structure figure of background technique introduction.
Fig. 2 is two of the hydraulic closed loop structure figure that introduces of background technique.
Fig. 3 is a structural representation of the present invention.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
This is applied to two hydraulic pump combination and separates the hydraulic closed loop that drives, comprise first oil hydraulic pump 1, second oil hydraulic pump 2 and oil hydraulic motor 7, also be provided with first Pilot operated check valve 3, second Pilot operated check valve 4, the 3rd Pilot operated check valve 5 and the 4th Pilot operated check valve 6, the inlet of the outlet of first oil hydraulic pump 1 and first Pilot operated check valve 3 joins by pipeline, the inlet of the inlet of first oil hydraulic pump 1 and second Pilot operated check valve 4 joins by pipeline, the inlet of the outlet of second oil hydraulic pump 2 and the 3rd Pilot operated check valve 5 joins by pipeline, the inlet of the inlet of second oil hydraulic pump 2 and the 4th Pilot operated check valve 6 joins by pipeline, the outlet of the outlet of first Pilot operated check valve 3 and the 3rd Pilot operated check valve 5 is joined by pipeline, the outlet of the outlet of second Pilot operated check valve 4 and the 4th Pilot operated check valve 6 is joined by pipeline, the inlet of described oil hydraulic motor 7 is connected by pipeline on the pipeline between the outlet of the outlet of first Pilot operated check valve 3 and the 3rd Pilot operated check valve 5, and the outlet of oil hydraulic motor 7 is connected by pipeline on the pipeline between the outlet of the outlet of second Pilot operated check valve 4 and the 4th Pilot operated check valve 6.
Guide's hydraulic fluid port of described first Pilot operated check valve 3 is connected by pipeline on the pipeline between the inlet of the inlet of first oil hydraulic pump 1 and second Pilot operated check valve 4.
Guide's hydraulic fluid port of described second Pilot operated check valve 4 is connected by pipeline on the pipeline between the inlet of the outlet of first oil hydraulic pump 1 and first Pilot operated check valve 3.
Guide's hydraulic fluid port of described the 3rd Pilot operated check valve 5 is connected by pipeline on the pipeline between the inlet of the inlet of second oil hydraulic pump 2 and the 4th Pilot operated check valve 6.
Guide's hydraulic fluid port of described the 4th Pilot operated check valve 6 is connected by pipeline on the pipeline between the inlet of the outlet of second oil hydraulic pump 2 and the 3rd Pilot operated check valve 5.
The present invention increases by first Pilot operated check valve 3, second Pilot operated check valve 4, the 3rd Pilot operated check valve 5 and the 4th Pilot operated check valve 6 these four Pilot operated check valves in system, can realize fully two drive simultaneously by first oil hydraulic pump 1, second oil hydraulic pump, 2 these two oil hydraulic pumps and wherein any driving under proper functioning, and do not need to do any operation, switch flexibly, satisfied the usage requirement under the different operating modes.
Claims (5)
1. one kind is applied to two hydraulic pump combination and separates the hydraulic closed loop that drives, comprise first oil hydraulic pump (1), second oil hydraulic pump (2) and oil hydraulic motor (7), it is characterized in that: also be provided with first Pilot operated check valve (3), second Pilot operated check valve (4), the 3rd Pilot operated check valve (5) and the 4th Pilot operated check valve (6), the inlet of the outlet of first oil hydraulic pump (1) and first Pilot operated check valve (3) joins by pipeline, the inlet of the inlet of first oil hydraulic pump (1) and second Pilot operated check valve (4) joins by pipeline, the inlet of the outlet of second oil hydraulic pump (2) and the 3rd Pilot operated check valve (5) joins by pipeline, the inlet of the inlet of second oil hydraulic pump (2) and the 4th Pilot operated check valve (6) joins by pipeline, the outlet of the outlet of first Pilot operated check valve (3) and the 3rd Pilot operated check valve (5) is joined by pipeline, the outlet of the outlet of second Pilot operated check valve (4) and the 4th Pilot operated check valve (6) is joined by pipeline, the inlet of described oil hydraulic motor (7) is connected by pipeline on the pipeline between the outlet of the outlet of first Pilot operated check valve (3) and the 3rd Pilot operated check valve (5), and the outlet of oil hydraulic motor (7) is connected by pipeline on the pipeline between the outlet of the outlet of second Pilot operated check valve (4) and the 4th Pilot operated check valve (6).
2. the hydraulic closed loop that is applied to two hydraulic pump combination and separate drives as claimed in claim 1 is characterized in that: guide's hydraulic fluid port of described first Pilot operated check valve (3) is connected by pipeline on the pipeline between the inlet of the inlet of first oil hydraulic pump (1) and second Pilot operated check valve (4).
3. the hydraulic closed loop that is applied to two hydraulic pump combination and separate drives as claimed in claim 1 is characterized in that: guide's hydraulic fluid port of described second Pilot operated check valve (4) is connected by pipeline on the pipeline between the inlet of the outlet of first oil hydraulic pump (1) and first Pilot operated check valve (3).
4. the hydraulic closed loop that is applied to two hydraulic pump combination and separate drives as claimed in claim 1 is characterized in that: guide's hydraulic fluid port of described the 3rd Pilot operated check valve (5) is connected by pipeline on the pipeline between the inlet of the inlet of second oil hydraulic pump (2) and the 4th Pilot operated check valve (6).
5. the hydraulic closed loop that is applied to two hydraulic pump combination and separate drives as claimed in claim 1 is characterized in that: guide's hydraulic fluid port of described the 4th Pilot operated check valve (6) is connected by pipeline on the pipeline between the inlet of the outlet of second oil hydraulic pump (2) and the 3rd Pilot operated check valve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101333286A CN103216475A (en) | 2013-04-16 | 2013-04-16 | Hydraulic closed circuit applying to double-hydraulic pump combined and separated drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101333286A CN103216475A (en) | 2013-04-16 | 2013-04-16 | Hydraulic closed circuit applying to double-hydraulic pump combined and separated drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103216475A true CN103216475A (en) | 2013-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101333286A Pending CN103216475A (en) | 2013-04-16 | 2013-04-16 | Hydraulic closed circuit applying to double-hydraulic pump combined and separated drive |
Country Status (1)
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| CN (1) | CN103216475A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2071271U (en) * | 1989-12-05 | 1991-02-13 | 中国矿业大学北京研究生部 | Back pressure self-adjusting composite valve and hydraulic drive system |
| CN2072546U (en) * | 1990-07-10 | 1991-03-06 | 李建启 | Hydraulic shovel slewing system with reclaiming brake energy |
| JPH10220412A (en) * | 1997-02-05 | 1998-08-21 | Sanwa Seiki Co Ltd | Hydraulic pressure control circuit for cylinder device |
| CN2661983Y (en) * | 2003-03-18 | 2004-12-08 | 青海青工机械股份有限公司 | Hydrostatic transmission of wheeled tractor hoist and workover rig |
| CN101216052A (en) * | 2008-01-09 | 2008-07-09 | 浙江大学 | Rotating speed variable driving shield cutterhead energy-saving hydraulic control system |
| CN101476543A (en) * | 2009-01-24 | 2009-07-08 | 哈尔滨工业大学 | Off-course driving device of non-off course gear used for aerogenerator |
| CN102434505A (en) * | 2011-12-09 | 2012-05-02 | 江苏玉泉科技实业有限公司 | Dual-power multi-pump converging long-distance pressure adjusting method and system |
| CN103016018A (en) * | 2012-12-26 | 2013-04-03 | 浙江大学 | Closed energy-saving shield screw conveyor hydraulic system |
| CN203189366U (en) * | 2013-04-16 | 2013-09-11 | 无锡市钻通工程机械有限公司 | Hydraulic closed loop applied to combined driving and separated driving of two hydraulic pumps |
-
2013
- 2013-04-16 CN CN2013101333286A patent/CN103216475A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2071271U (en) * | 1989-12-05 | 1991-02-13 | 中国矿业大学北京研究生部 | Back pressure self-adjusting composite valve and hydraulic drive system |
| CN2072546U (en) * | 1990-07-10 | 1991-03-06 | 李建启 | Hydraulic shovel slewing system with reclaiming brake energy |
| JPH10220412A (en) * | 1997-02-05 | 1998-08-21 | Sanwa Seiki Co Ltd | Hydraulic pressure control circuit for cylinder device |
| CN2661983Y (en) * | 2003-03-18 | 2004-12-08 | 青海青工机械股份有限公司 | Hydrostatic transmission of wheeled tractor hoist and workover rig |
| CN101216052A (en) * | 2008-01-09 | 2008-07-09 | 浙江大学 | Rotating speed variable driving shield cutterhead energy-saving hydraulic control system |
| CN101476543A (en) * | 2009-01-24 | 2009-07-08 | 哈尔滨工业大学 | Off-course driving device of non-off course gear used for aerogenerator |
| CN102434505A (en) * | 2011-12-09 | 2012-05-02 | 江苏玉泉科技实业有限公司 | Dual-power multi-pump converging long-distance pressure adjusting method and system |
| CN103016018A (en) * | 2012-12-26 | 2013-04-03 | 浙江大学 | Closed energy-saving shield screw conveyor hydraulic system |
| CN203189366U (en) * | 2013-04-16 | 2013-09-11 | 无锡市钻通工程机械有限公司 | Hydraulic closed loop applied to combined driving and separated driving of two hydraulic pumps |
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Application publication date: 20130724 |