CN201382031Y - Generating device of servo hydraulic pump station - Google Patents

Generating device of servo hydraulic pump station Download PDF

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Publication number
CN201382031Y
CN201382031Y CN200920053815U CN200920053815U CN201382031Y CN 201382031 Y CN201382031 Y CN 201382031Y CN 200920053815 U CN200920053815 U CN 200920053815U CN 200920053815 U CN200920053815 U CN 200920053815U CN 201382031 Y CN201382031 Y CN 201382031Y
Authority
CN
China
Prior art keywords
servo
pressure
generating
oil pump
hydraulic pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN200920053815U
Other languages
Chinese (zh)
Inventor
李向东
江永忠
罗志雄
曾子健
张勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Donghua Machinery Co Ltd
Original Assignee
Donghua Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Donghua Machinery Co Ltd filed Critical Donghua Machinery Co Ltd
Priority to CN200920053815U priority Critical patent/CN201382031Y/en
Application granted granted Critical
Publication of CN201382031Y publication Critical patent/CN201382031Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a servo hydraulic pump station in which a frequency converter controls a servo motor to drive an oil pump, provides a generating device of a servo hydraulic pump station which has compact structure and easy control, and solves the problems of expensive cost and incapable scale industrial application and popularization in spite of superior performance of the traditional servo hydraulic pump station. The generating device comprises an oil pump, the oil pump is connected with a servo motor, a frequency converter is connected with and drives the servo motor, the speed value state parameter of the servo motor is transmitted to a logic conversion card, and the detection value state parameter of a pressure sensor is transmitted to the logic conversion card. The generating device solves the problem that the pressure instruction of the traditional servo hydraulic pump station relies on the tracking and control of a servo controller, so that a complicated servo controller software and hardware structure has to be designed, the total cost of the servo hydraulic pump station is greatly reduced, and the generating device has very high practical value and popularization significance.

Description

The generating means of servo-hydraulic pumping plant
Technical field
The utility model relates to a kind of generating means of servo-hydraulic pumping plant, relates in particular to a kind of servo-hydraulic pumping plant by Frequency Converter Control driven by servomotor oil pump form.
Background technique
At present, the generating means of traditional servo-hydraulic pumping plant is by servocontroller control driven by servomotor oil pump, and pressure control and flow control are all monitored to carry out and carry out logical function automatically by servocontroller and switched.When servocontroller monitors the force value that under a certain flow instruction induced pressure value allows to set greater than system, the rotating speed that flow system flow promptly reduces actuating motor will be reduced automatically, to guarantee that system power can not overload.Pressure and flow are by the control of servocontroller principle of vector control realization to whole servo-hydraulic pumping station system.
Traditional servo-hydraulic pumping plant since pressure instruction and flow instruction all need to rely on servo controller system to carry out logic control and driving, the software and hardware of servo controller system is formed more complicated comparatively speaking, cost is also very expensive, in the generating means of traditional servo-hydraulic pumping plant, the servocontroller cost accounts for about 2/3 of whole servo-hydraulic pumping plant cost.
The servo-hydraulic pumping plant is owing to have very remarkable energy saving effect and response is fast and the repeatability advantages of higher than conventional asynchronous motor driving oil pump form; begun gradually to use in the scale of related industries field; but the high manufacturing cost of servocontroller has also caused servo-hydraulic pumping plant overall cost high; hindered the commercial Application of servo-hydraulic technology, existing servo-hydraulic pumping plant is necessary above defective is improved and perfect.
The model utility content
Problem at the prior art existence, the purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part, a kind of servo-hydraulic pumping plant pressure control and flow control mode simple in structure are provided, when the difference of pressure instruction and pressure transducer is carried out pressure control during less than the difference of flow instruction and actual speed, pressure controlled realization equipment is that the actual value of pressure instruction and pressure transducer constitutes pressure controlled closed loop feedback system by the ratio pressure control unit of proportional pressure valve control; When the difference of pressure instruction and pressure transducer is carried out flow control during greater than the difference of flow instruction and actual speed, flow instruction and the detected actual speed of actuating motor encoder have constituted the speed closed loop reponse system, effectively control flow and pressure distribution relation, thereby united the realization that realizes Frequency Converter Control driven by servomotor oil pump scheme.
For reaching above-mentioned purpose, the generating means structure of servo-hydraulic pumping plant of the present utility model, adopt following technological scheme:
A kind of generating means of servo-hydraulic pumping plant, include oil pump, oil pump connects actuating motor, and frequency variator connects and the driving actuating motor, actuating motor tachometer value status parameter is sent to the logical transition card, and pressure transducer checkout value status parameter is sent to the logical transition card.
Further, the frequency variator of described servo-hydraulic pumping plant, actuating motor, oil pump, ratio pressure control unit, logical transition card, pressure transducer teamwork jointly control the flow and the pressure of hydraulic power unit system;
The pressure fuel pump of above-mentioned servo-hydraulic pumping plant carries out pressure control by the ratio pressure control unit, and the pressure output value of oil pump is detected by pressure transducer.
Servo-hydraulic pumping plant device of the present utility model is jointly controlled by logical transition card, pressure transducer, frequency variator, actuating motor, oil pump and ratio pressure control unit, oil pump is installed on the actuating motor, the rotating speed of actuating motor is crossed logical operation by the logical transition cartoon and is sent instruction and control to frequency variator, and the pressure of the hydraulic system that actuating motor and oil pump are formed is controlled by the ratio pressure control unit, thereby unites pressure and the flow control of realization to whole servo-hydraulic pumping plant.Send rotary speed instruction after flow instruction is converted by the logical transition card and give frequency variator, drive actuating motor by frequency variator, thus the increase and decrease of decision flow; And pressure instruction is realized by the ratio pressure control unit, the pressure instruction that has solved traditional servo-hydraulic pumping plant depends on servocontroller and follows the trail of and control, thereby must design complicated this difficult problem of servocontroller software and hardware structure, greatly reduce the whole cost of servo-hydraulic pumping plant, had very high use value and dissemination.
The utility model compact structure, economical and practical, low cost of manufacture, be easy to control; though solve traditional servo-hydraulic pumping plant superior performance but cost an arm and a leg; can't scale carry out the difficult problem that commercial Application is promoted; it is easy to operate, productivity is high, stay in grade, easy to use, and Safety performance is reliable.
Description of drawings
Fig. 1 is the utility model embodiment's a structure principle chart.
Embodiment
For further understanding feature of the present utility model, technological means and the specific purposes that reached, function, the utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
The utility model dependency structure mainly comprises following component (or device): frequency variator 1, actuating motor (built-in rotating speed coder) 2, oil pump 3, ratio pressure control unit 4, logical transition card 5 and pressure transducer 6.
Structure devices such as Fig. 1, the utility model includes oil pump 3, and oil pump 3 connects actuating motor 2, and frequency variator 1 connects and driving actuating motor 2, actuating motor 2 tachometer value status parameters are sent to logical transition card 5, and pressure transducer 6 checkout value status parameters are sent to logical transition card 5.Oil pump 3 pressure of servo-hydraulic pumping plant carry out pressure control by ratio pressure control unit 4, and the pressure output value of oil pump 3 is detected by pressure transducer 6.The frequency variator 1 of servo-hydraulic pumping plant, actuating motor 2, oil pump 3, ratio pressure control unit 4, logical transition card 5, pressure transducer 6 teamworks jointly control the flow and the pressure of hydraulic power unit system.
Actuating motor 2 and oil pump 3 link together, and the rotating speed of actuating motor 2 is driven by frequency variator 1.By the conversion of the logic between each monitoring parameter frequency variator 1 is sent rotary speed instruction by logical transition card 5, thereby the rotating speed of control actuating motor 2 is realized the flow size of hydraulic power unit system is controlled.Pressure instruction, flow instruction, pressure transducer 6 checkout values, actuating motor 2 tachometer values all are input to logical transition card 5 and carry out logical operation, and will judge finally that rotary speed instruction offers 1 pair of actuating motor of frequency variator 2 and carries out rotating speed control.And ratio pressure control unit 4 independent controlled hydraulic system pressure independently, pressure instruction and flow instruction are united the Comprehensive Control of realization to the pressure and the flow of hydraulic power unit system by 5 teamworks of logical transition card.Drive actuating motor 2 by frequency variator 1 during the hydraulic power unit system works and carry out flow control, and pressure instruction carries out pressure control by the ratio pressure control unit, the two reaches best using effect by logical transition card logic computing Comprehensive Control.
Above illustrated embodiment is only with for conveniently illustrating the utility model, be not that the utility model is done any pro forma restriction, have in the technical field under any and know the knowledgeable usually, if in the scope that does not break away from technical characteristics that the utility model is carried, utilize technology contents that the utility model discloses to do the local equivalent embodiment who changes or modify, and do not break away from technical characteristics content of the present utility model, all still belong in the scope of the utility model technical characteristics.

Claims (3)

1, a kind of generating means of servo-hydraulic pumping plant, include: oil pump (3), it is characterized in that: described oil pump (3) connects actuating motor (2), frequency variator (1) connects and driving actuating motor (2), actuating motor (2) tachometer value status parameter is sent to logical transition card (5), and pressure transducer (6) checkout value status parameter is sent to logical transition card (5).
2, the generating means of servo-hydraulic pumping plant according to claim 1, it is characterized in that: the oil pump of described servo-hydraulic pumping plant (3) pressure carries out pressure control by ratio pressure control unit (4), and the pressure output value of oil pump (3) is detected by pressure transducer (6).
3, the generating means of servo-hydraulic pumping plant according to claim 2 is characterized in that: the frequency variator of described servo-hydraulic pumping plant (1), actuating motor (2), oil pump (3), ratio pressure control unit (4), logical transition card (5), pressure transducer (6) teamwork jointly control the flow and the pressure of hydraulic power unit system.
CN200920053815U 2009-04-01 2009-04-01 Generating device of servo hydraulic pump station Expired - Fee Related CN201382031Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200920053815U CN201382031Y (en) 2009-04-01 2009-04-01 Generating device of servo hydraulic pump station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200920053815U CN201382031Y (en) 2009-04-01 2009-04-01 Generating device of servo hydraulic pump station

Publications (1)

Publication Number Publication Date
CN201382031Y true CN201382031Y (en) 2010-01-13

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Family Applications (1)

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CN200920053815U Expired - Fee Related CN201382031Y (en) 2009-04-01 2009-04-01 Generating device of servo hydraulic pump station

Country Status (1)

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CN (1) CN201382031Y (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102359807A (en) * 2011-08-08 2012-02-22 天津大学 Control scheme for flow stability of liquid flow device
CN103047121A (en) * 2012-12-26 2013-04-17 三一重工股份有限公司 Electric concrete pump and construction control method thereof
CN103920862A (en) * 2014-04-30 2014-07-16 重庆立致和节能科技有限公司 Die-casting machine asynchronous servo energy-saving control method and system
CN106079337A (en) * 2016-06-01 2016-11-09 广州能之原科技股份有限公司 A kind of servo transformation pressure flow signal conversion method and system
CN106870475A (en) * 2017-04-01 2017-06-20 苏州星贝尔中空成型科技股份有限公司 A kind of hollow blow molding machine hydraulic system
CN110094389A (en) * 2019-05-16 2019-08-06 陕西理工大学 A kind of energy-saving hydraulic station

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102359807A (en) * 2011-08-08 2012-02-22 天津大学 Control scheme for flow stability of liquid flow device
CN103047121A (en) * 2012-12-26 2013-04-17 三一重工股份有限公司 Electric concrete pump and construction control method thereof
CN103920862A (en) * 2014-04-30 2014-07-16 重庆立致和节能科技有限公司 Die-casting machine asynchronous servo energy-saving control method and system
CN103920862B (en) * 2014-04-30 2016-03-09 重庆立致和节能科技有限公司 The asynchronous energy-saving servo control method of die casting machine and control system thereof
CN106079337A (en) * 2016-06-01 2016-11-09 广州能之原科技股份有限公司 A kind of servo transformation pressure flow signal conversion method and system
CN106870475A (en) * 2017-04-01 2017-06-20 苏州星贝尔中空成型科技股份有限公司 A kind of hollow blow molding machine hydraulic system
CN110094389A (en) * 2019-05-16 2019-08-06 陕西理工大学 A kind of energy-saving hydraulic station
CN110094389B (en) * 2019-05-16 2022-05-03 陕西理工大学 Energy-saving hydraulic station

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100113

Termination date: 20160401

CF01 Termination of patent right due to non-payment of annual fee