CN104061198A - Double-pump oil supply fast-control system - Google Patents
Double-pump oil supply fast-control system Download PDFInfo
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- CN104061198A CN104061198A CN201410261310.9A CN201410261310A CN104061198A CN 104061198 A CN104061198 A CN 104061198A CN 201410261310 A CN201410261310 A CN 201410261310A CN 104061198 A CN104061198 A CN 104061198A
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Abstract
The invention discloses a double-pump oil supply fast-control system. The double-pump oil supply fast-control system comprises a hydraulic cylinder and is characterized by also comprising a low-pressure large-flow pump, a high-pressure small-flow pump, a reversing valve and a throttling valve, wherein the high-pressure small-flow pump is connected with the hydraulic cylinder by a pipeline on which the throttling valve is arranged; the pipelines on two sides of the throttling valve are connected with the reversing valve; the low-pressure large-flow pump is connected with a pipeline for connecting the high-pressure small-flow pump and the hydraulic cylinder by a branch pipeline on which a one-way valve is arranged. The double-pump oil supply fast-control system disclosed by the invention has the advantages that the problems that the hydraulic cylinder adopts a single pump for supplying oil generally, the application range is smaller, the use effect is poorer, the oil returning efficiency is poorer, the power consumption is higher, and the use need cannot be met in the prior art are solved; the structure is simple, the use is convenient, a duplex pump can be provided as a power source, the power consumption is less, the oil returning efficiency is higher, and the use is safer and more reliable.
Description
Technical field
The present invention relates to a kind of control system, particularly relate to a kind of double pump fuel feeding fast acting control system.
Background technique
Oil hydraulic cylinder by hydraulic energy change mechanical energy into, the do straight reciprocating motion hydraulic actuator of (or oscillating motion).Its simple in structure, reliable operation.While realizing to-and-fro motion with it, can remove speed reducer from, and there is no drive gap, motion steadily, is therefore used widely in the hydraulic system of various machineries.The pressure reduction on oil hydraulic cylinder ouput force and piston effective area and both sides thereof is directly proportional.And current oil hydraulic cylinder adopts single oil pump feed more, Applicable scope is less, and using effect is poor, and oil return efficiency is poor, and power consumption is higher, cannot meet the needs of use.
Summary of the invention
In order to solve oil hydraulic cylinder in prior art, adopt single oil pump feed more, Applicable scope is less, and using effect is poor, and oil return efficiency is poor, power consumption is higher, cannot meet the problem of use needs, the invention provides a kind of simple in structure, easy to use, can provide duplex pump to do power source, power consumption is less, and backflow efficiency is higher, uses more safe and reliable double pump fuel feeding fast acting control system.
In order to address the above problem, the technical solution used in the present invention is:
A kind of double pump fuel feeding fast acting control system, comprise oil hydraulic cylinder, it is characterized in that: also comprise low pressure and mass flow pump, high-pressure low-flow pump, selector valve and throttle valve, described high-pressure low-flow pump is connected with oil hydraulic cylinder by pipeline, on the pipeline of the two connection, be provided with throttle valve, the pipeline of described throttle valve both sides is connected with selector valve, described low pressure and mass flow pump by branch road be connected high-pressure low-flow pump and be connected with the pipeline of oil hydraulic cylinder, on branch road, be provided with one-way valve.
Aforesaid a kind of double pump fuel feeding fast acting control system, is characterized in that: at low pressure and mass flow pump, connect on branch road and be provided with pressure-relief valve.
Aforesaid a kind of double pump fuel feeding fast acting control system, is characterized in that: on the pipeline that connects high-pressure low-flow pump and oil hydraulic cylinder, be provided with relief valve.
Aforesaid a kind of double pump fuel feeding fast acting control system, is characterized in that: described relief valve adopts Hydraulic Relief Valve.
Aforesaid a kind of double pump fuel feeding fast acting control system, is characterized in that: described selector valve adopts solenoid directional control valve.
Aforesaid a kind of double pump fuel feeding fast acting control system, is characterized in that: described throttle valve adopts straight-through type throttle valve.
The invention has the beneficial effects as follows: double pump fuel feeding fast acting control system of the present invention, high-pressure low-flow pump is connected with oil hydraulic cylinder by pipeline, low pressure and mass flow pump by branch road be connected high-pressure low-flow pump and be connected with the pipeline of oil hydraulic cylinder, by two pumps to oil hydraulic cylinder fuel feeding, using effect is better, and oil return efficiency is higher.Coordinate the use of unloading valve, throttle valve and selector valve simultaneously, can realize oil pump feed of high-pressure low-flow pump, Applicable scope is larger, uses function more complete.
Accompanying drawing explanation
Fig. 1 is the structural representation of double pump fuel feeding fast acting control system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, a kind of double pump fuel feeding fast acting control system, comprise oil hydraulic cylinder 8, low pressure and mass flow pump 1, high-pressure low-flow pump 2, unloading valve 3, one-way valve 4, relief valve 5, selector valve 6 and throttle valve 7, described high-pressure low-flow pump 2 is connected with oil hydraulic cylinder 8 by pipeline, on the pipeline of the two connection, be provided with throttle valve 7, the pipeline of described throttle valve 7 both sides is connected with selector valve 6, described low pressure and mass flow pump 1 by branch road be connected high-pressure low-flow pump 2 and be connected with the pipeline of oil hydraulic cylinder 8, on branch road, be provided with one-way valve 4.At low pressure and mass flow pump 1, connect on branch road and be provided with pressure-relief valve 3.On the pipeline that connects high-pressure low-flow pump 2 and oil hydraulic cylinder 8, be provided with relief valve 5.Described relief valve 5 adopts Hydraulic Relief Valve.Described selector valve 6 adopts solenoid directional control valve.Described throttle valve 7 adopts straight-through type throttle valve.
The Maximum operating pressure a of system when double pump fuel feeding fast acting control system unloading valve 3 of the present invention and relief valve 5 are set respectively double pump fuel feeding and high-pressure low-flow pump 2 fuel feeding, when selector valve 6 is in shown position, during due to zero load, load is very little, system pressure is very low, if system pressure is during lower than unloading valve 3 set pressure, unloading valve 3 is in closed condition, the output flow of low pressure and mass flow pump l backs down one-way valve 4, converge and realize two pumps simultaneously to system fuel feeding with the flow of high-pressure low-flow pump 2, oil hydraulic cylinder 8 pistons move right fast, although now the flow in loop is very fiery, but because the pressure of load very minor loop is very low, so the power of loop output is also little.
When selector valve 6 is in right position, due to the throttling action of throttle valve 7, cause system pressure to meet or exceed the set pressure of unloading valve 3, unloading valve 3 is opened, cause low pressure and mass flow pump 1 through unloading valve 3 off-loads, one-way valve 4 is closed automatically, by low pressure and mass flow pump 1 and 2 isolation of high-pressure low-flow pump, only has high-pressure low-flow pump 2 to system fuel feeding, piston moves right at a slow speed, relief valve 5 is in overflow situation, and keeping system pressure is substantially constant, now only has high-pressure low-flow pump 2 in work.1 off-load of low pressure and mass flow pump, has reduced power consumption, and circuit efficiency is higher.So adopt the fast acting control system of double pump fuel feeding when loop acquisition is very high-speed, the power of loop output is less, makes hydraulic system power coupling rationally.
In sum, double pump fuel feeding fast acting control system of the present invention, high-pressure low-flow pump 2 is connected with oil hydraulic cylinder 8 by pipeline, low pressure and mass flow pump 1 by branch road be connected high-pressure low-flow pump 2 and be connected with the pipeline of oil hydraulic cylinder 8, by two pumps to oil hydraulic cylinder fuel feeding, using effect is better, and oil return efficiency is higher.Coordinate the use of unloading valve 3, throttle valve 6 and selector valve 7 simultaneously, can realize 2 one oil pump feeds of high-pressure low-flow pump, Applicable scope is larger, uses function more complete.
More than show and described basic principle of the present invention, major character and advantage.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (6)
1. a double pump fuel feeding fast acting control system, comprise oil hydraulic cylinder, it is characterized in that: also comprise low pressure and mass flow pump, high-pressure low-flow pump, selector valve and throttle valve, described high-pressure low-flow pump is connected with oil hydraulic cylinder by pipeline, on the pipeline of the two connection, be provided with throttle valve, the pipeline of described throttle valve both sides is connected with selector valve, described low pressure and mass flow pump by branch road be connected high-pressure low-flow pump and be connected with the pipeline of oil hydraulic cylinder, on branch road, be provided with one-way valve.
2. a kind of double pump fuel feeding fast acting control system according to claim 1, is characterized in that: at low pressure and mass flow pump, connect on branch road and be provided with pressure-relief valve.
3. a kind of double pump fuel feeding fast acting control system according to claim 2, is characterized in that: on the pipeline that connects high-pressure low-flow pump and oil hydraulic cylinder, be provided with relief valve.
4. a kind of double pump fuel feeding fast acting control system according to claim 3, is characterized in that: described relief valve adopts Hydraulic Relief Valve.
5. a kind of double pump fuel feeding fast acting control system according to claim 4, is characterized in that: described selector valve adopts solenoid directional control valve.
6. a kind of double pump fuel feeding fast acting control system according to claim 5, is characterized in that: described throttle valve adopts straight-through type throttle valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410261310.9A CN104061198A (en) | 2014-06-13 | 2014-06-13 | Double-pump oil supply fast-control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410261310.9A CN104061198A (en) | 2014-06-13 | 2014-06-13 | Double-pump oil supply fast-control system |
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| CN104061198A true CN104061198A (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410261310.9A Pending CN104061198A (en) | 2014-06-13 | 2014-06-13 | Double-pump oil supply fast-control system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402066A (en) * | 2016-10-11 | 2017-02-15 | 国网江苏省电力公司镇江供电公司 | Hydraulic power conversion control device |
| CN107313999A (en) * | 2016-09-27 | 2017-11-03 | 湖南汽车工程职业学院 | Automatic Bamboo Mat Weaving Machine enters the thin bamboo strip, top pressure thin bamboo strip fluid power system and its driving method |
| CN109026868A (en) * | 2018-09-28 | 2018-12-18 | 天津尚吉液压设备有限公司 | Quick punch shears |
| CN109973450A (en) * | 2019-03-29 | 2019-07-05 | 徐工集团工程机械股份有限公司科技分公司 | Hydraulic system and engineering truck |
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|---|---|---|---|---|
| CN2267890Y (en) * | 1994-11-18 | 1997-11-19 | 高树权 | hydraulic system of machine tool |
| JPH10299726A (en) * | 1997-04-30 | 1998-11-10 | Dainippon Printing Co Ltd | Hydraulic driving system |
| CN102562716A (en) * | 2012-02-27 | 2012-07-11 | 太仓凯鑫电子有限公司 | High-efficiency oil supply loop |
| CN103846405A (en) * | 2012-11-30 | 2014-06-11 | 无锡市协新气动有限公司 | Hydraulic system for speed changing of spray drawing vehicle |
| CN204003682U (en) * | 2014-06-13 | 2014-12-10 | 苏州华徕光电仪器有限公司 | A kind of double pump fuel feeding fast acting control system |
-
2014
- 2014-06-13 CN CN201410261310.9A patent/CN104061198A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2267890Y (en) * | 1994-11-18 | 1997-11-19 | 高树权 | hydraulic system of machine tool |
| JPH10299726A (en) * | 1997-04-30 | 1998-11-10 | Dainippon Printing Co Ltd | Hydraulic driving system |
| CN102562716A (en) * | 2012-02-27 | 2012-07-11 | 太仓凯鑫电子有限公司 | High-efficiency oil supply loop |
| CN103846405A (en) * | 2012-11-30 | 2014-06-11 | 无锡市协新气动有限公司 | Hydraulic system for speed changing of spray drawing vehicle |
| CN204003682U (en) * | 2014-06-13 | 2014-12-10 | 苏州华徕光电仪器有限公司 | A kind of double pump fuel feeding fast acting control system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313999A (en) * | 2016-09-27 | 2017-11-03 | 湖南汽车工程职业学院 | Automatic Bamboo Mat Weaving Machine enters the thin bamboo strip, top pressure thin bamboo strip fluid power system and its driving method |
| CN106402066A (en) * | 2016-10-11 | 2017-02-15 | 国网江苏省电力公司镇江供电公司 | Hydraulic power conversion control device |
| CN109026868A (en) * | 2018-09-28 | 2018-12-18 | 天津尚吉液压设备有限公司 | Quick punch shears |
| CN109973450A (en) * | 2019-03-29 | 2019-07-05 | 徐工集团工程机械股份有限公司科技分公司 | Hydraulic system and engineering truck |
| CN109973450B (en) * | 2019-03-29 | 2024-05-14 | 徐工集团工程机械股份有限公司科技分公司 | Hydraulic system and engineering vehicle |
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Application publication date: 20140924 |