CN100516556C - General digital electro-hydraulic pressure control module - Google Patents
General digital electro-hydraulic pressure control module Download PDFInfo
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- CN100516556C CN100516556C CNB2006100322960A CN200610032296A CN100516556C CN 100516556 C CN100516556 C CN 100516556C CN B2006100322960 A CNB2006100322960 A CN B2006100322960A CN 200610032296 A CN200610032296 A CN 200610032296A CN 100516556 C CN100516556 C CN 100516556C
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Abstract
The universal digital electrohydraulic pressure control module consists of one pressure reducing valve, one high speed switching digital solenoid valve and one host pressure regulating valve closed loop connected. The pressure reducing valve has the oil inlet connected to the hydraulic system and oil outlet connected to the oil inlet of the high speed switching digital solenoid valve, the high speed switching digital solenoid valve has the control port connected to the control port of the host pressure regulating valve, and the host pressure regulating valve has the oil inlet connected to the hydraulic system and the oil outlet of the pressure reducing valve. The present invention has simple structure, high efficiency, high reliability, broad continuous regulation range, low power consumption, high precision and high technological performance.
Description
Technical field:
The present invention relates to a kind of hydraulic control device, particularly relate to a kind of general digital electro-hydraulic pressure control module.
Background technique:
With mechanical transmission, Electrified Transmission etc. are compared, hydraulic transmission has compact structure, driving force is big, the location is accurate, motion is steady, be easy to realize automatic control, parts are lubricated good, advantages such as the life-span is long, therefore, hydraulic transmission is widely used in industrial departments such as mechanical industry, metallurgical industry, petroleum industry, engineering construction, boats and ships, aviation, military affairs, aerospace.In recent years, hydraulic transmission combines step by step deeply with electronic technology, even to this day, in as far as possible little space, spread out of big as far as possible power and satisfy the occasion that accurately control requires, hydraulic transmission has been sure to occupy first of the various kinds of drive, can not be substituted, this situation changed people to it be familiar with, the methods of analysis and synthesis, make hydraulicdriven component type, oil channel structures, system design and the preparation process deep variation all take place.
Pressure control circuit is meant the working pressure of setting up hydraulic system, makes it be no more than pre-set numerical value or makes the working pressure of system keep constant at certain certain value.The basic skills of traditional electrical hydraulic coupling control realizes by the computer control electro-hydraulic proportional valve, the working pressure of electro-hydraulic proportional valve and the electric current of input are proportional, according to the job requirement of hydraulic system, regulate the electric current of input electric-hydraulic proportion, can reach the pressure regulation purpose.Since electric hydraulic proportion valve have the form kind various, install and use flexibly and many-sided advantage such as contamination resistance is strong, so application is widened day by day.But still there is following problem by the hydraulic control system that electro-hydraulic proportional valve is formed:
(1), keeping the essential problem of solenoid valve: this valve must and supporting electronic control proportional amplifier use together, and this proportional amplifier 26S Proteasome Structure and Function more complicated all is so the corresponding investment cost that increased has reduced the reliability of working simultaneously;
(2), range of regulation is little, control accuracy is not high, the cost height, energy consumption is big;
(3), be connected the special-purpose D/A interface of needs with the signal of microprocessor, this has just increased manufacture cost and has made complex structure, and quantization error and transmission noise all can influence control accuracy.
Summary of the invention:
Technical problem to be solved by this invention is: solve the problem that above-mentioned prior art exists, and a kind of general digital electro-hydraulic pressure control module is provided, its continuous voltage regulating scope is big, cheap, energy consumption is little, and versatility is good, speed of response is fast, the repeatability height, simple in structure, good manufacturability, contamination resistance is strong, efficiently, reliable, economical and practical.
The technical solution used in the present invention is:
This general digital electro-hydraulic pressure control module is connected to form by reduction valve, high speed switch type digital solenoid valve, main pressure regulator valve closed loop, system's hydraulic pressure connects the reduction valve input end, the reduction valve output terminal connects the filler opening of high speed switch type digital solenoid valve, the control mouth of high speed switch type digital solenoid valve is connected to the control mouth of main pressure regulator valve, and the filler opening of main pressure regulator valve connects input end and system's hydraulic pressure of reduction valve.
General digital electro-hydraulic pressure control module of the present invention is a kind of more efficient, more reliable, the control pressurer system of more economical practicality, owing to adopted the control unit of the high speed switch type digital solenoid valve of pulse length modulation principle control (PWM) as voltage regulating module, compare with electric hydraulic proportion valve adjusting system in the past, it is big to have the continuous voltage regulating scope, cheap, energy consumption is little, versatility is good, speed of response is fast, the repeatability height, simple in structure, good manufacturability, contamination resistance is strong, working stability is reliable, the digital and electronic control amplifier line that drives high-speed switch valve is simple, the resolution height, can make system have very little stagnant ring and high many advantages such as repeatability, and the ON/OFF digital signal can be directly changed into the fluid pulse signal, make Computer Control Technology just can realize combination with hydraulics by the D/A translation interface, this provides possibility for its extensive use in the engineering field, for a kind of approach has been opened up in the application of computer in hydraulic system, also improved the task performance of hydraulic system simultaneously greatly.
Good effect of the present invention is that it provides a general voltage regulating module, this general module utilizes the high-speed switch valve of cheap 0～5Mpa range of regulation to realize the very large-scale pressure of system is regulated, solved the contradiction that high-speed switch valve can not be applied to high pressure, big flow pressure regulation occasion: not only control accuracy height, favorable repeatability, and only need just system pressure to be adjusted within the very big scope (1.6～10Mpa) by an electronic pressure-regulating interface.
Description of drawings:
Fig. 1 is a structure principle chart of the present invention
Fig. 2 is the direct acting pressure structure principle chart
Fig. 3 is a high speed switch type digital solenoid valve structure principle chart
Fig. 4 is the main pressure regulator valve structure principle chart
Embodiment:
Referring to Fig. 1～Fig. 4, this general digital electro-hydraulic pressure control module is by reduction valve, 1, high speed switch type digital solenoid valve 2, main pressure regulator valve 3 closed loops connect to form, system's hydraulic pressure 4 is that oil hydraulic pump 5 output connection reduction valve input ends are filler opening 9, the drain tap of reduction valve is 11, the reduction valve output terminal is the filler opening 6 that oil outlet 10 connects high speed switch type digital solenoid valve 2, the return opening of high speed switch type digital solenoid valve 2 is 7, the control mouth 8 of high speed switch type digital solenoid valve 2 is connected to the control mouth 12 of main pressure regulator valve 3, the drain tap of main pressure regulator valve 3 is 13, and the filler opening 14 of main pressure regulator valve 3 connects input end 9 and system's hydraulic pressure 4 of reduction valve 1.
Above-mentioned reduction valve, high speed switch type digital solenoid valve, main pressure regulator valve adopt prior art: reduction valve is a direct acting pressure, model: VM series reduction valve, manufacturer: U.S. PARKER company; The high speed switch type digital solenoid valve, model: HSV series of high speed switch valve, manufacturer: Guizhou Honglin Machinery Corporation Ltd.; Main pressure regulator valve, model: H type pressure controlled valve, the manufacturer: Yuci oil grinds institute.
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail:
Figure 1 shows that general digital electro-hydraulic pressure control module schematic diagram of the present invention, should " general digital electro-hydraulic pressure control module " combine by three parts altogether, i.e. direct acting pressure, main pressure regulator valve and two-bit triplet high speed switch type digital solenoid valve.This module can pass through to regulate the dutycycle of high speed switch type digital solenoid valve pwm signal according to the requirement of system works pressure, and system pressure is regulated arbitrarily in 4～40Mpa.
Figure 2 shows that the direct acting pressure structure principle chart, this valve valve core is by the pressure control in outlet port, when outlet pressure does not reach set pressure, valve core is motionless, and valve port is opened, and the import and export of valve are linked up, this moment, reduction valve was equivalent to logical together, when outlet pressure reached its set pressure, valve core moved to left, and valve port turns down.Ignore other resistances, the condition that hydraulic coupling on the consideration valve core and spring force balance each other, then outlet pressure maintains on its setting basically as can be known, if because outlet is at this moment pressed increase, then valve core moves to left, and valve port turns down, valve port place resistance increases, pressure drop increases, and outlet pressure is descended, and reaches setting.Otherwise if outlet pressure subtracts power, then valve core moves to right, and valve port is opened greatly, and valve port place resistance reduces, and pressure drop reduces, and outlet pressure is gone up, thereby reach setting.
Among the present invention, the reduction valve oil outlet is connected high speed switch type digital solenoid valve filler opening, and for switch valve provides stable oil pressure, its set pressure is designed to 5Mpa, promptly when system pressure during less than 5Mpa this reduction valve inoperative, be equivalent to a passage; When system pressure during greater than 5Mpa reduction valve outlet pressure is stable at 5Mpa.
Figure 3 shows that two-bit triplet high speed switch type digital solenoid valve structure principle chart, the control mode of this valve is PWM (Pulse width modulated) mode, i.e. a pulse-width modulation type.When pulse signal is low level, the solenoid valve outage, the oil return ball valve to left movement, finally abuts against on the oil return sealing surface of seat under the effect of return opening and oil-feed port pressure reduction, and oil return is disconnected, and oil-feed port is communicated with actuator port, realizes control action.When pulse signal is high level, the solenoid valve energising, armature produces electromagnetic push moves right the oil return ball valve by push rod and separate pins together, come on its sealed seat surface up to the fuel feeding ball valve, failure of oil feed this moment, oil return is changed, and realizes oil return.Like this, the dutycycle by the control pwm signal just can get continuous adjustable control mouth pressure.
Among the present invention, the pressure regulation range of high speed switch type digital solenoid valve is 0.2～5MPAa, controls on mouthful spool of end in main pressure regulator valve as leading role with its pressure.
Figure 4 shows that the main pressure regulator valve structure principle chart, the structure of main pressure regulator valve has the relief valve function, and when inlet pressure was low, valve core was in low order end under the effect of control mouthful oil pressure and spring, and at this moment, filler opening and return opening cut off, and valve is in closed condition; When the import oil pressure was increased to the pressure that acts on the valve core right-hand member greater than spring force and control mouthful oil pressure, valve core began to left movement, and finally make fluid from filler opening through the return opening overflow.At this moment, because the relief function of this valve, when changes in flow rate, it is constant that inlet pressure keeps.
Among the present invention, main pressure regulator valve valve core spring force rate is less, be mainly used to overcome valve core frictional force, control port end valve heart bearing area is 8 times of filler opening end valve heart bearing area, and the pressure balance by these two ends of valve core concerns that as can be known filler opening place oil pressure approximately can reach 8 times of control port pressure like this, and the control port oil pressure is adjustable in 0.2～5MPa, so behind this pressure regulator valve, system pressure can be adjustable continuously in 1.6～40MPAa scope.
In sum, general digital electro-hydraulic pressure control module of the present invention according to the job requirement of hydraulic system, just can obtain any one system pressure value in excursion 1.6～40MPAa by the dutycycle of regulating speed-sensitive switch numeral electromagnetism pwm signal.
Claims (1)
1, a kind of general digital electro-hydraulic pressure control module, it is characterized in that connecting to form by reduction valve, high speed switch type digital solenoid valve, main pressure regulator valve closed loop, system's hydraulic pressure connects the reduction valve input end, the reduction valve output terminal connects the filler opening of high speed switch type digital solenoid valve, the control mouth of high speed switch type digital solenoid valve is connected to the control mouth of main pressure regulator valve, and the filler opening of main pressure regulator valve connects input end and system's hydraulic pressure of reduction valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100322960A CN100516556C (en) | 2006-09-22 | 2006-09-22 | General digital electro-hydraulic pressure control module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100322960A CN100516556C (en) | 2006-09-22 | 2006-09-22 | General digital electro-hydraulic pressure control module |
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| Publication Number | Publication Date |
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| CN101149067A CN101149067A (en) | 2008-03-26 |
| CN100516556C true CN100516556C (en) | 2009-07-22 |
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| CNB2006100322960A Active CN100516556C (en) | 2006-09-22 | 2006-09-22 | General digital electro-hydraulic pressure control module |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107152426B (en) * | 2017-05-19 | 2018-07-24 | 青神格林维尔流体动力控制技术有限公司 | A kind of angle-bender hydraulic pressure plug-in integrated package |
| CN114701467B (en) * | 2022-03-29 | 2023-04-07 | 浙江工业大学 | High-precision full hydraulic braking system and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039288A (en) * | 1989-07-24 | 1990-01-31 | 权宇 | Composite control valve of pressure and flow proportional to electric current |
| DE19703324A1 (en) * | 1997-01-30 | 1998-08-06 | Buchholz Hydraulik | Electrohydraulic control valve for lifting and lowering hoist module or ram |
| US6202685B1 (en) * | 1998-05-07 | 2001-03-20 | Heilmeier & Weinlein Fabrik F. Oelhydraulic Bmbh & Co. Kg | Electrohydraulic clamping module |
| DE10023583A1 (en) * | 2000-05-13 | 2002-04-18 | Bosch Gmbh Robert | Electro-hydraulic lowering module, to control the load moved by a hydraulic motor, has a seat valve with its function integrated in the pressure balance in a simple structure with an emergency cut-out |
-
2006
- 2006-09-22 CN CNB2006100322960A patent/CN100516556C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039288A (en) * | 1989-07-24 | 1990-01-31 | 权宇 | Composite control valve of pressure and flow proportional to electric current |
| DE19703324A1 (en) * | 1997-01-30 | 1998-08-06 | Buchholz Hydraulik | Electrohydraulic control valve for lifting and lowering hoist module or ram |
| US6202685B1 (en) * | 1998-05-07 | 2001-03-20 | Heilmeier & Weinlein Fabrik F. Oelhydraulic Bmbh & Co. Kg | Electrohydraulic clamping module |
| DE10023583A1 (en) * | 2000-05-13 | 2002-04-18 | Bosch Gmbh Robert | Electro-hydraulic lowering module, to control the load moved by a hydraulic motor, has a seat valve with its function integrated in the pressure balance in a simple structure with an emergency cut-out |
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| Publication number | Publication date |
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| CN101149067A (en) | 2008-03-26 |
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Address after: 410205 No. 68 Du Rong Road, Yuelu District, Changsha, Hunan Patentee after: Hunan Yung Da intelligent transmission Limited by Share Ltd. Address before: 410205 No. 68 Du Rong Road, Yuelu District, Changsha, Hunan Patentee before: Hunan Yung Da vehicle transmission Limited by Share Ltd. |
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Address after: 410205 No. 68 Du Rong Road, Yuelu District, Changsha, Hunan Patentee after: Hunan Yung Da vehicle transmission Limited by Share Ltd. Address before: 410205 No. 888 cuckoo Road, Yuelu District, Changsha, Hunan Patentee before: HUNAN JIANGLU & RONGDA VEHICLE TRANSMISSION Ltd. |
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Effective date of registration: 20240129 Address after: 646003 Section 4, Jiugu Avenue, High tech Zone, Luzhou City, Sichuan Province Patentee after: Luzhou Rongda Intelligent Transmission Co.,Ltd. Country or region after: China Address before: 410205 No. 68 Du Rong Road, Yuelu District, Changsha, Hunan Patentee before: Hunan Yung Da intelligent transmission Limited by Share Ltd. Country or region before: China |