CN106122186A - A kind of hydraulic system realizing the stepless accurate speed governing of hydraulic press - Google Patents
A kind of hydraulic system realizing the stepless accurate speed governing of hydraulic press Download PDFInfo
- Publication number
- CN106122186A CN106122186A CN201610744844.6A CN201610744844A CN106122186A CN 106122186 A CN106122186 A CN 106122186A CN 201610744844 A CN201610744844 A CN 201610744844A CN 106122186 A CN106122186 A CN 106122186A
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- CN
- China
- Prior art keywords
- way valve
- adjusting module
- speed adjusting
- mouth
- hydraulic
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention discloses a kind of hydraulic system realizing the accurate speed governing of hydraulic press large-scale stepless, mainly include main pump source, auxiliary pumping source, on a large scale speed adjusting module, little scope speed adjusting module, the first two-way valve, the second two-way valve, the 3rd two-way valve, main hydraulic cylinder and slide block.Ratio variable-flow main pump source, on a large scale speed adjusting module and the combination application of little scope speed adjusting module so that the present invention possesses three-step timing function, and speed range of accommodation is wide, precision is high, be fully able to meet the various work requirements of hydraulic press；The restriction loss of hydraulic system is few, has preferable energy conservation characteristic.
Description
Technical field
The present invention relates to a kind of hydraulic system realizing the stepless accurate speed governing of hydraulic press, the particularly liquid of great tonnage hydraulic machine
Pressure governing system.
Background technology
Hydraulic press, particularly large-tonnage hydraulic press, due to its specific operating mode, it usually needs stepless in very wide range
Accurately speed governing, how to accomplish accurately, on a large scale in speed regulation be hydraulic press design of Hydraulic System in must take into
One key factor.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides and a kind of can effectively realize hydraulic press stepless accurate speed governing
Hydraulic system.
The technical solution adopted for the present invention to solve the technical problems is as follows:
A kind of hydraulic system realizing the stepless accurate speed governing of hydraulic press of the present invention, is characterized in that: include main pump source, auxiliary pumping source,
Speed adjusting module, little scope speed adjusting module, the first two-way valve, the second two-way valve, the 3rd two-way valve, main hydraulic cylinder on a large scale
And slide block, the P mouth connection of the oil-out in main pump source and the A mouth of the first two-way valve and the 3rd two-way valve, the 3rd two-way ball
The A mouth of valve and the A mouth of the second two-way valve and main hydraulic cylinder connect, the oil-out of auxiliary pumping source and speed adjusting module on a large scale
The P mouth connection of P mouth and little scope speed adjusting module, the A mouth of speed adjusting module and the P mouth of the first two-way valve connect on a large scale, little
The P mouth connection of the A mouth of scope speed adjusting module and the second two-way valve, on a large scale the T mouth of speed adjusting module and little scope speed governing mould
The T mouth of block all connects fuel tank, and main hydraulic cylinder is mechanically coupled together with slide block.
Further, described main pump source possesses ratio variable-flow function, can be AC asynchronous motor band proportioning pump group,
Servomotor band dosing pump group or servomotor band proportioning pump group.
Further, speed adjusting module on a large scale of the present invention can be big flow proportion valve group, big serving volume valve group
Or big flow servo proportioning valve group.
Further, little scope speed adjusting module of the present invention can be low discharge proportioning valve group, low discharge servo valve group
Or low discharge servo proportion group.
Further, the first two-way valve of the present invention, the second two-way valve, the 3rd two-way valve can be to have phase
The inserted valve group of congenerous.
Further, equipped with pressure transducer on the connecting line of main hydraulic cylinder of the present invention, main hydraulic cylinder fills
Having displacement transducer, it is achieved the hydraulic system of the stepless accurate speed governing of hydraulic press also includes PLC control system, PLC control system is led to
Cross holding wire respectively with main pump source, on a large scale speed adjusting module, little scope speed adjusting module, the first two-way valve, the second two-way valve,
3rd two-way valve, pressure transducer and displacement transducer connect.
Compared with prior art, beneficial effects of the present invention is as follows:
1, ratio variable-flow main pump source, on a large scale speed adjusting module and the combination application of little scope speed adjusting module so that the present invention has
Standby three-step timing function, i.e. pump control speed-regulating function, large-scale valve controlled velocity modulation function and the valve controlled velocity modulation function of little scope, speed
Range of accommodation is wide, precision is high for degree, is fully able to meet the various work requirements of hydraulic press.
2, the three-step timing function of the present invention, the accurate speed-regulating function of large-scale stepless that not only made hydraulic tools standby, and
And the restriction loss of hydraulic system also substantially reduces, energy conservation characteristic is greatly improved.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the present invention.
Fig. 2 is that the one of speed adjusting module on a large scale realizes schematic diagram.
Fig. 3 is that the one of little scope speed adjusting module realizes schematic diagram.
Fig. 4 is the schematic diagram of a kind of electrohydraulic control system of the application present invention.
Fig. 5 is the present invention speed controlling schematic diagram advanced section of low speed work.
In Fig. 1: 1. main pump source, 2. auxiliary pumping source, the most on a large scale speed adjusting module, the least scope speed adjusting module, 5. the 1st
Pass ball valve, 6. the second two-way valve, 7. the 3rd two-way valve, 8. main hydraulic cylinder, 9. slide block.
In Fig. 4: 1. main pump source, 2. auxiliary pumping source, 3. big orifice servo proportion, the least latus rectum servo proportion, 5. the
One two-way valve, 6. the second two-way valve, 7. the 3rd two-way valve, 8. main hydraulic cylinder, 9. slide block, 10. pressure transducer, 11.
Displacement transducer, 12. man machine interfaces, 13.PLC control system.
Detailed description of the invention
The present invention is further illustrated below in conjunction with the accompanying drawings.
See Fig. 1, the invention mainly comprises: main pump source 1, auxiliary pumping source 2, on a large scale speed adjusting module 3, little scope speed governing mould
Block the 4, first two-way valve the 5, second two-way valve the 6, the 3rd two-way valve 7, main hydraulic cylinder 8 and slide block 9, main pump source 1 fuel-displaced
Mouth connects with the A mouth of the first two-way valve 5 and the P mouth of the 3rd two-way valve 7, the A mouth of the 3rd two-way valve 7 and the second two-way
A mouth and the main hydraulic cylinder 8 of ball valve 6 connect, the oil-out of auxiliary pumping source 2 and the P mouth of speed adjusting module 3 on a large scale and little scope
The P mouth connection of speed adjusting module 4, the A mouth of speed adjusting module 3 and the P mouth of the first two-way valve 5 connect on a large scale, little scope speed governing mould
The P mouth connection of the A mouth of block 4 and the second two-way valve 6, on a large scale the T mouth of speed adjusting module 3 and the T mouth of little scope speed adjusting module 4
All connecting fuel tank, main hydraulic cylinder 8 is mechanically coupled together with slide block 9.
Seeing Fig. 2, speed adjusting module on a large scale 3 of the present invention can be realized, such as by a big orifice servo proportion
Use 25 latus rectum 4WRVE type servo proportions of Rexroth company of Germany.
Seeing Fig. 3, little scope speed adjusting module 4 of the present invention can be realized, such as by a little latus rectum servo proportion
Use 6 latus rectum 4WRREH type servo proportions of Rexroth company of Germany.
Latus rectum servo proportion little shown in big orifice servo proportion shown in Fig. 2 and Fig. 3 is applied to the present invention,
The schematic diagram of a kind of typical electrohydraulic control system is as shown in Figure 4.
Seeing Fig. 4, the pressure in main hydraulic cylinder 8 of the present invention can be surveyed by the pressure transducer 10 being arranged on pipeline
, the displacement of main hydraulic cylinder 8 can be by measured by the displacement transducer 11 being arranged on main hydraulic cylinder 8, and man machine interface 12 is mainly born
Duty input and some basic parameters of display hydraulic press, carry out communication by bus between it and PLC control system 13, and PLC is controlled
System 13 processed is mainly responsible for the work such as the action control of hydraulic press, data acquisition, and PLC control system 13 is come by AI module collection
Pressure signal from pressure transducer 10 and the displacement signal from displacement transducer 11, PLC control system 13 is by DO mould
Block controls the first two-way valve the 5, second two-way valve 6 and magnet switching of the 3rd two-way valve 7, and PLC control system 13 is led to
Cross AO module and control the flow in main pump source 1, the opening of big orifice servo proportion 3 and the opening of little latus rectum servo proportion 4.
Seeing Fig. 1, Fig. 2, Fig. 3, Fig. 4, the operation principle of the present invention is as follows:
Advanced section of low speed work, PLC control system 13 by DO module control first two-way valve the 5, second two-way valve 6,
The electric magnet of three two-way valves 7 obtains electric or power-off: depended on the output stream in main pump source 1 by the flow of the 3rd two-way valve 7
Measure and by the flow of big orifice servo proportion 3, both is controlled by PLC control system 13；By the second two-way ball
The flow of valve 6 is determined by the flow of little latus rectum servo proportion 4, and this flow is controlled by PLC control system 13 equally；Logical
The resultant flow crossing the 3rd two-way valve 7 and the second two-way valve 6 enters main hydraulic cylinder 8 as total driving flow, drives main
Hydraulic cylinder 8 down runs；Hydraulic press is run according to displacement set in advance-rate curve.
Seeing Fig. 5, the speed controlling principle that the present invention enters in low speed work is as follows:
PLC control system 13 passes through the AI module Real-time Collection displacement signal from displacement transducer 11, and calculates corresponding
Rate signal, tables look-up obtain current speed command, gained according to present bit shifting signal and displacement-rate curve set in advance
Speed command compares with present speed, obtains present speed deviation, and controller receives speed command and velocity deviation, and root simultaneously
Calculate flow instruction, open order 3 and open order 4 according to certain control algolithm, control the output stream in main pump source 1 respectively
Amount, the opening of big orifice servo proportion 3 and the opening of little latus rectum servo proportion 4, the output flow in main pump source 1, pass through
The flow of big orifice servo proportion 3 and the flow of little latus rectum servo proportion 4 go to drive main liquid as total driving flow
Cylinder pressure 8 so that hydraulic press runs according to displacement set in advance-rate curve.
It should be understood that the present invention shown in Fig. 5 advanced section of low speed work speed controlling schematic diagram and on state
Bright it is all based on electrohydraulic control system shown in Fig. 4.
Claims (6)
1. realize a hydraulic system for the stepless accurate speed governing of hydraulic press, it is characterized in that: include main pump source (1), auxiliary pumping source
(2), on a large scale speed adjusting module (3), little scope speed adjusting module (4), the first two-way valve (5), the second two-way valve (6), the 3rd
Two-way valve (7), main hydraulic cylinder (8) and slide block (9), the oil-out of main pump source (1) and the A mouth of the first two-way valve (5) and
The P mouth connection of the 3rd two-way valve (7), the A mouth of the 3rd two-way valve (7) and the A mouth of the second two-way valve (6) and main hydraulic pressure
Cylinder (8) connects, and assists the oil-out of pumping source (2) and the P mouth of speed adjusting module (3) on a large scale and the P of little scope speed adjusting module (4)
Mouth connection, the A mouth of speed adjusting module (3) and the P mouth of the first two-way valve (5) connect on a large scale, the A of little scope speed adjusting module (4)
Mouthful connect with the P mouth of the second two-way valve (6), on a large scale the T mouth of speed adjusting module (3) and the T mouth of little scope speed adjusting module (4)
All connecting fuel tank, main hydraulic cylinder (8) is mechanically coupled together with slide block (9).
A kind of hydraulic system realizing the stepless accurate speed governing of hydraulic press the most according to claim 1, it is characterised in that: described
Main pump source (1) possesses ratio variable-flow function, be AC asynchronous motor band proportioning pump group, servomotor band dosing pump group or
The one of servomotor band proportioning pump group.
A kind of hydraulic system realizing the stepless accurate speed governing of hydraulic press the most according to claim 1, it is characterised in that: described
Speed adjusting module (3) is big flow proportion valve group, big serving volume valve group or the one of big flow servo proportioning valve group on a large scale.
A kind of hydraulic system realizing the stepless accurate speed governing of hydraulic press the most according to claim 1, it is characterised in that: described
Little scope speed adjusting module (4) is low discharge proportioning valve group, low discharge servo valve group or the one of low discharge servo proportion group.
A kind of hydraulic system realizing the stepless accurate speed governing of hydraulic press the most according to claim 1, it is characterised in that: described
First two-way valve (5), the second two-way valve (6), the 3rd two-way valve (7) are the inserted valve groups with identical function.
A kind of hydraulic system realizing the stepless accurate speed governing of hydraulic press the most according to claim 1, it is characterised in that: described
Main hydraulic cylinder (8) connecting line on equipped with pressure transducer (10), equipped with displacement transducer (11) on main hydraulic cylinder (8),
The hydraulic system realizing the stepless accurate speed governing of hydraulic press also includes that PLC control system (13), PLC control system (13) pass through signal
Line respectively with main pump source (1), on a large scale speed adjusting module (3), little scope speed adjusting module (4), the first two-way valve (5), the two or two
Pass ball valve (6), the 3rd two-way valve (7), pressure transducer (10) and displacement transducer (11) connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610744844.6A CN106122186B (en) | 2016-08-29 | 2016-08-29 | A kind of hydraulic system for realizing the stepless accurate speed governing of hydraulic press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610744844.6A CN106122186B (en) | 2016-08-29 | 2016-08-29 | A kind of hydraulic system for realizing the stepless accurate speed governing of hydraulic press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106122186A true CN106122186A (en) | 2016-11-16 |
| CN106122186B CN106122186B (en) | 2018-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610744844.6A Active CN106122186B (en) | 2016-08-29 | 2016-08-29 | A kind of hydraulic system for realizing the stepless accurate speed governing of hydraulic press |
Country Status (1)
| Country | Link |
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| CN (1) | CN106122186B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120328A (en) * | 2017-04-26 | 2017-09-01 | 天津市天锻压力机有限公司 | The process control system and control method of isothermal forging hydropress |
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| EP1793128A1 (en) * | 2005-06-06 | 2007-06-06 | Shin Caterpillar Mitsubishi Ltd. | Drive device for rotation, and working machine |
| CN202579475U (en) * | 2012-05-22 | 2012-12-05 | 三河沃达液压控制系统有限公司 | Hydraulic servo unit |
| CN103286250A (en) * | 2013-05-22 | 2013-09-11 | 天津市天锻压力机有限公司 | Control system and control method for flow of pump set of forging hydraulic machine |
| CN204591851U (en) * | 2015-04-30 | 2015-08-26 | 南京埃尔法电液技术有限公司 | Multistage flow pressure compound control system |
| CN204658877U (en) * | 2015-06-03 | 2015-09-23 | 周建红 | Digital ratio equation many closed loops electrohydraulic servo-controlling system |
| CN104999695A (en) * | 2015-06-15 | 2015-10-28 | 浙江大学 | Electro-hydraulic control system capable of achieving ultralow-speed stable running of hydraulic machine |
| CN206530575U (en) * | 2016-08-29 | 2017-09-29 | 南通锻压设备股份有限公司 | A kind of hydraulic system for realizing the stepless accurate speed governing of hydraulic press |
-
2016
- 2016-08-29 CN CN201610744844.6A patent/CN106122186B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1793128A1 (en) * | 2005-06-06 | 2007-06-06 | Shin Caterpillar Mitsubishi Ltd. | Drive device for rotation, and working machine |
| CN202579475U (en) * | 2012-05-22 | 2012-12-05 | 三河沃达液压控制系统有限公司 | Hydraulic servo unit |
| CN103286250A (en) * | 2013-05-22 | 2013-09-11 | 天津市天锻压力机有限公司 | Control system and control method for flow of pump set of forging hydraulic machine |
| CN204591851U (en) * | 2015-04-30 | 2015-08-26 | 南京埃尔法电液技术有限公司 | Multistage flow pressure compound control system |
| CN204658877U (en) * | 2015-06-03 | 2015-09-23 | 周建红 | Digital ratio equation many closed loops electrohydraulic servo-controlling system |
| CN104999695A (en) * | 2015-06-15 | 2015-10-28 | 浙江大学 | Electro-hydraulic control system capable of achieving ultralow-speed stable running of hydraulic machine |
| CN206530575U (en) * | 2016-08-29 | 2017-09-29 | 南通锻压设备股份有限公司 | A kind of hydraulic system for realizing the stepless accurate speed governing of hydraulic press |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120328A (en) * | 2017-04-26 | 2017-09-01 | 天津市天锻压力机有限公司 | The process control system and control method of isothermal forging hydropress |
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| Publication number | Publication date |
|---|---|
| CN106122186B (en) | 2018-06-26 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20180814 Address after: 226503 Jiangsu Nantong Rugao North Road Park North Road (economic and Technological Development Zone Forging Industry Park) Patentee after: Nantong forging equipment Rugao Co., Ltd. Address before: 226500 Jiangsu Nantong Rugao Economic Development Zone Forging Industry Park Patentee before: Nantong Forging Equipment Co., Ltd. |
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