CN203189366U - Hydraulic closed loop applied to combined driving and separated driving of two hydraulic pumps - Google Patents
Hydraulic closed loop applied to combined driving and separated driving of two hydraulic pumps Download PDFInfo
- Publication number
- CN203189366U CN203189366U CN 201320191470 CN201320191470U CN203189366U CN 203189366 U CN203189366 U CN 203189366U CN 201320191470 CN201320191470 CN 201320191470 CN 201320191470 U CN201320191470 U CN 201320191470U CN 203189366 U CN203189366 U CN 203189366U
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- hydraulic
- check valve
- outlet
- pilot operated
- operated check
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Abstract
The utility mode relates to a hydraulic closed loop applied to combined driving and separated driving of two hydraulic pumps. The hydraulic closed loop comprises a first hydraulic pump, a second hydraulic pump and a hydraulic motor, and is further provided with a first hydraulic control one-way valve, a second hydraulic control one-way valve, a third hydraulic control one-way valve and a fourth hydraulic control one-way valve. The outlet of the first hydraulic pump is connected with the inlet of the first hydraulic control one-way valve, the inlet of the first hydraulic pump is connected with the inlet of the second hydraulic control one-way valve, the outlet of the second hydraulic pump is connected with the inlet of the third hydraulic control one-way valve, the inlet of the second hydraulic pump is connected with the inlet of the fourth hydraulic control one-way valve, the outlet of the first hydraulic control one-way valve is connected with the outlet of the third hydraulic control one-way valve, the outlet of the second hydraulic control one-way valve is connected with the outlet of the fourth hydraulic control one-way valve, the inlet of the hydraulic motor is connected to a pipeline between the outlet of the first hydraulic control one-way valve and the outlet of the third hydraulic control one-way valve, and the outlet of the hydraulic motor is connected to a pipeline between the outlet of the second hydraulic control one-way valve and the outlet of the fourth hydraulic control one-way valve. According to the hydraulic closed loop applied to the combined driving and the separated driving of the two hydraulic pumps, the fact that the hydraulic closed loop can work normally under the condition that the oil pumps carry out driving simultaneously or any one of the oil pumps carries our driving, any operation does not need to be carried out, and changing over is flexible.
Description
Technical field
The utility model 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 purpose of this utility model is to overcome the deficiencies in the prior art, provides 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.
The technological scheme that provides according to the utility model, 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 entrance of the first hydraulic pressure delivery side of pump and first Pilot operated check valve joins by pipeline, the entrance of the entrance of first oil hydraulic pump and second Pilot operated check valve joins by pipeline, the entrance of the second hydraulic pressure delivery side of pump and the 3rd Pilot operated check valve joins by pipeline, the entrance of the entrance 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 entrance 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 entrance of the entrance 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 entrance 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 entrance of the entrance 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 entrance of the second hydraulic pressure delivery side of pump and the 3rd Pilot operated check valve.
The utility model 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 structural representation of the present utility model.
Embodiment
The utility model is described in further detail 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 entrance of the outlet of first oil hydraulic pump 1 and first Pilot operated check valve 3 joins by pipeline, the entrance of the entrance of first oil hydraulic pump 1 and second Pilot operated check valve 4 joins by pipeline, the entrance of the outlet of second oil hydraulic pump 2 and the 3rd Pilot operated check valve 5 joins by pipeline, the entrance of the entrance 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 entrance 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 entrance of the entrance 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 entrance 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 entrance of the entrance 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 entrance of the outlet of second oil hydraulic pump 2 and the 3rd Pilot operated check valve 5.
The utility model 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 that fully two are driven simultaneously by first oil hydraulic pump 1, second oil hydraulic pump, 2 these two oil hydraulic pumps and proper functioning under any driving wherein, 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 entrance of the outlet of first oil hydraulic pump (1) and first Pilot operated check valve (3) joins by pipeline, the entrance of the entrance of first oil hydraulic pump (1) and second Pilot operated check valve (4) joins by pipeline, the entrance of the outlet of second oil hydraulic pump (2) and the 3rd Pilot operated check valve (5) joins by pipeline, the entrance of the entrance 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 entrance 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 entrance of the entrance 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 entrance 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 entrance of the entrance 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 entrance 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 |
|---|---|---|---|
| CN 201320191470 CN203189366U (en) | 2013-04-16 | 2013-04-16 | Hydraulic closed loop applied to combined driving and separated driving of two hydraulic pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320191470 CN203189366U (en) | 2013-04-16 | 2013-04-16 | Hydraulic closed loop applied to combined driving and separated driving of two hydraulic pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189366U true CN203189366U (en) | 2013-09-11 |
Family
ID=49106228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320191470 Expired - Lifetime CN203189366U (en) | 2013-04-16 | 2013-04-16 | Hydraulic closed loop applied to combined driving and separated driving of two hydraulic pumps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189366U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216475A (en) * | 2013-04-16 | 2013-07-24 | 无锡市钻通工程机械有限公司 | Hydraulic closed circuit applying to double-hydraulic pump combined and separated drive |
-
2013
- 2013-04-16 CN CN 201320191470 patent/CN203189366U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216475A (en) * | 2013-04-16 | 2013-07-24 | 无锡市钻通工程机械有限公司 | Hydraulic closed circuit applying to double-hydraulic pump combined and separated drive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130911 |