CN203257774U - Hydraulic control system with hydraulic executive component for controlling servo pump - Google Patents
Hydraulic control system with hydraulic executive component for controlling servo pump Download PDFInfo
- Publication number
- CN203257774U CN203257774U CN2013202825480U CN201320282548U CN203257774U CN 203257774 U CN203257774 U CN 203257774U CN 2013202825480 U CN2013202825480 U CN 2013202825480U CN 201320282548 U CN201320282548 U CN 201320282548U CN 203257774 U CN203257774 U CN 203257774U
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- hydraulic
- valve
- executive component
- way valve
- oil
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Abstract
The utility model discloses a hydraulic control system with a hydraulic executive component for controlling a servo pump. The hydraulic control system comprises the hydraulic executive component, a directional valve, a first one-way valve, a second one-way valve and a third one-way valve, a hydraulic executive component upper cavity normally-closed type prefill valve, an energy accumulator, a bidirectional pump and an oil tank and is characterized in that the bidirectional pump is driven by the servo motor to rotate forward and backward at variable speed; an oil port of the bidirectional pump is connected with a lower cavity of the hydraulic executive component through a lower cavity oil line, the energy accumulator is arranged on the lower cavity oil line in parallel, and the lower cavity oil line is connected with the oil tank through the first one-way valve; an other oil port of the bidirectional pump is connected with an upper cavity of the hydraulic executive component through an upper cavity oil line, an oil line is led out of the upper cavity oil line, is sequentially connected with the third one-way valve and the directional valve in series and then is connected to the hydraulic executive component upper cavity normally-closed type prefill valve, and meanwhile, another oil line is led out of the upper cavity oil and is connected with the oil tank through the second one-way valve. The hydraulic control system has the advantages of avoiding the defects of original throttling speed adjustment principle, high energy loss, easiness in heating of the system, low efficiency and the like, adjusting the speed by using volume, being energy-saving, environment-friendly and fast in response and having high synchronization precision.
Description
Technical field
The utility model relates to a kind of hydraulic actuator hydraulic control system, is a kind of hydraulic actuator servo-pump control hydraulic control system specifically.Under this unloading way, eliminate the hydraulic pressure reversing impact, the hydraulic control system smooth running.
Background technique
Hydraulic actuator, existing hydraulic control system, its control mode all adopts valve prosecutor formula, utilizes the work of solenoid directional control valve, series flow control valve and throttle valve control executive component.Exist energy loss large, system easily generates heat, and efficient is low, and speed of response waits shortcoming slowly.Valve control hydraulic control system is to utilize off-load distance (oil pocket upwards the moves a segment distance) mode of regulating, make the steady off-load of epicoele, because executive component Area comparison large (can reach 12:1), upper and lower cavity oil extraction and oil-feed flow differ greatly, and pump delivery is certain, steadily off-load is difficult to control, to making system works undesired.
The model utility content
Technical problem to be solved in the utility model, be to overcome the defective that existing valve control techniques exists, proposed a kind of hydraulic actuator servo-pump control hydraulic control system, with original throttle grverning principle, energy loss is large, system easily generates heat, the shortcomings such as efficient is low are abandoned, and utilize volumetric speed control, energy-conserving and environment-protective, synchronization accuracy is high, and response is fast.
A kind of hydraulic actuator servo-pump control of the utility model hydraulic control system comprises hydraulic actuator, directional control valve, the first one-way valve, the second one-way valve and the 3rd one-way valve, hydraulic actuator epicoele normal close type liquid-filling valve, accumulator and two-way pump and fuel tank; It is characterized in that: described two-way pump drives the speed change clockwise and anticlockwise by actuating motor; A hydraulic fluid port of two-way pump connects the cavity of resorption of hydraulic actuator by the cavity of resorption oil circuit, accumulator in parallel on the cavity of resorption oil circuit, and the cavity of resorption oil circuit is through the first one-way valve connected tank; Another hydraulic fluid port of two-way pump connects the epicoele of hydraulic actuator by the epicoele oil circuit, draw an oil circuit on the epicoele oil circuit, connecting successively is connected to hydraulic actuator epicoele normal close type liquid-filling valve behind the 3rd one-way valve and the directional control valve, draws simultaneously another oil circuit through the second one-way valve connected tank.
The utility model hydraulic actuator servo-pump control hydraulic control system is half-closed oil-way system, and the oil pump inlet port is from executive component one chamber inhalant liquid force feed, and the oil that pump is discharged all enters another chamber of executive component.Because the executive component area differs larger, so that the also corresponding larger difference that occurs of the oil suction flow of pump and oil extraction flow.The flow of discharging at pump is during greater than the intake side flow, intake side can pass through the one-way valve repairing, reach the oily balance of turnover, and at the oil suction flow when discharging the needed flow of side executive component, system pressure meeting abnormal (pressure meeting young tiger liter), make system's operation undesired, between executive component cavity of resorption and oil pump, increase the accumulator of a suitable capacity for this reason, allow unnecessary oil enter accumulator, like this we just to be easy to solve the Area comparison of executive component large, the inconsistent practical problem of suction oil flow is generalized to other and uses and off-load is regulated become easily convenient, and system works is reliable, normally.The utility model is to utilize actuating motor to reverse at a slow speed, solves the problem of off-load and balance.
Description of drawings
Fig. 1 is the hydraulic schematic diagram of the utility model hydraulic actuator servo-pump control hydraulic control system.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, hydraulic actuator servo-pump control hydraulic control system comprises hydraulic actuator 10, directional control valve 30, the first one-way valve 110, the second one-way valve 100 and the 3rd one-way valve 40, hydraulic actuator epicoele normal close type liquid-filling valve 20, accumulator 70 and two-way pump 80 and fuel tank.Described two-way pump drives the speed change clockwise and anticlockwise by actuating motor 90.A hydraulic fluid port of two-way pump connects the cavity of resorption of hydraulic actuator by the cavity of resorption oil circuit, accumulator in parallel on the cavity of resorption oil circuit, and the cavity of resorption oil circuit is through the first one-way valve connected tank; Another hydraulic fluid port of two-way pump connects the epicoele of hydraulic actuator by the epicoele oil circuit.Draw an oil circuit on the epicoele oil circuit, be connected to hydraulic actuator epicoele normal close type liquid-filling valve behind connect successively the 3rd one-way valve and the directional control valve, draw simultaneously another oil circuit through the second one-way valve connected tank.Among the figure, mark 50,60 is pressure valve.
Principle explanation (with reference to Fig. 1)
1, fast lower: actuating motor 90 drives two-way pump 80 speed change forwards, hydraulic actuator 10 cavity of resorption fluid flow into the oil sucting cavity of two-way pump 80, another road binders liquid flows into the oil sucting cavity of two-way pump 80 from fuel tank by the first one-way valve 100, two-way pump 80 output fluid, one the tunnel through one-way valve 40, selector valve 30, and liquid-filling valve (20) is opened, and fluid enters executive component 10 epicoeles from liquid-filling valve 20, another road binders liquid enters executive component 10 epicoeles, and executive component 10 fast downwards.
2, the worker advance, pressurize: actuating motor 90 drives two-way pumps 80 speed change forwards, hydraulic actuator 10 cavity of resorption fluid flow into the oil sucting cavity of two-way pump 80, another road binders liquid flows into the oil sucting cavity of two-way pump 80 from fuel tank by the first one-way valve 110, selector valve 30 gets electric at this moment, liquid-filling valve 20 cuts out, two-way pump 80 output fluid enter executive component 10 epicoeles, executive component 10 downward workers advance, when executive component 10 touches load, system pressure is increased to and requires pressure, carries out pressurize when executive component 10 runs to limit position.
3, off-load: actuating motor 90 drives two-way pump 80 and reverses at a slow speed, selector valve 30 gets electric, liquid-filling valve 20 cuts out, two-way pump 80 is from hydraulic actuator 10 epicoele oil suctions, to hydraulic actuator 10 cavity of resorption fuel feeding, slide block is slowly up, the pressure of hydraulic actuator 10 epicoeles is by two-way pump 10 counter-rotating off-loads, at this moment, two-way pump 80 is large from executive component 10 epicoele oil suction flows, and the flow of buying oil that two-way pump 80 is discharged requirement is also large, and the needed oil mass of executive component 10 cavity of resorptions is few, unnecessary oil is processed by accumulator 70, realizes steady off-load thereby easily regulate actuating motor 90 rotating speeds.
4, return: actuating motor 90 drives two-way pump 80 and reverses fast, two-way pump 80 output fluid, through the 3rd one-way valve 40, selector valve 30, liquid-filling valve 20 is opened, the fluid of executive component 10 epicoeles is by liquid-filling valve 20 a part of oil sump tanks, another part is got back to the inlet port of two-way pump 80, and two-way pump 80 is discharged fluid and entered executive component 10 cavity of resorptions, executive component 10 quick upwards returns.
Claims (1)
1. a hydraulic actuator servo-pump control hydraulic control system comprises hydraulic actuator (10), directional control valve (30), the first one-way valve (110), the second one-way valve (100) and the 3rd one-way valve (40), hydraulic actuator epicoele normal close type liquid-filling valve (20), accumulator (70) and two-way pump (80) and fuel tank; It is characterized in that: described two-way pump drives the speed change clockwise and anticlockwise by actuating motor (90); A hydraulic fluid port of two-way pump connects the cavity of resorption of hydraulic actuator by the cavity of resorption oil circuit, accumulator in parallel on the cavity of resorption oil circuit, and the cavity of resorption oil circuit is through the first one-way valve connected tank; Another hydraulic fluid port of two-way pump connects the epicoele of hydraulic actuator by the epicoele oil circuit, draw an oil circuit on the epicoele oil circuit, connecting successively is connected to hydraulic actuator epicoele normal close type liquid-filling valve behind the 3rd one-way valve and the directional control valve, draws simultaneously another oil circuit through the second one-way valve connected tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202825480U CN203257774U (en) | 2013-05-22 | 2013-05-22 | Hydraulic control system with hydraulic executive component for controlling servo pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202825480U CN203257774U (en) | 2013-05-22 | 2013-05-22 | Hydraulic control system with hydraulic executive component for controlling servo pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203257774U true CN203257774U (en) | 2013-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202825480U Expired - Lifetime CN203257774U (en) | 2013-05-22 | 2013-05-22 | Hydraulic control system with hydraulic executive component for controlling servo pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN203257774U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240329A (en) * | 2015-11-02 | 2016-01-13 | 山东富力世新型材料有限公司 | Servo pump control hydraulic system |
| CN106122128A (en) * | 2016-08-17 | 2016-11-16 | 江苏国力锻压机床有限公司 | A kind of servo-pump control hydraulic press of high fine positioning |
-
2013
- 2013-05-22 CN CN2013202825480U patent/CN203257774U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240329A (en) * | 2015-11-02 | 2016-01-13 | 山东富力世新型材料有限公司 | Servo pump control hydraulic system |
| CN106122128A (en) * | 2016-08-17 | 2016-11-16 | 江苏国力锻压机床有限公司 | A kind of servo-pump control hydraulic press of high fine positioning |
| CN106122128B (en) * | 2016-08-17 | 2017-11-21 | 江苏国力锻压机床有限公司 | A kind of servo-pump control hydraulic press of high fine positioning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NANJING ESTUN AUTOMATION CO., LTD. Free format text: FORMER OWNER: AIERFA ELECTROHYDRAULIC TECHNOLOGY CO., LTD., NANJING CITY Effective date: 20150908 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150908 Address after: 211100 Jiangning Economic Development Zone, Jiangsu Province, general Avenue, No. 155, No. Patentee after: NANJING ESTUN AUTOMATION Co. Address before: Shengtai Industrial Park No. 88 SIEMENS road 211100 Jiangsu city of Nanjing province Jiangning economic and Technological Development Zone Patentee before: Nanjing Alpha Electro-hydraulic Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |
|
| CX01 | Expiry of patent term |