CN206530575U - A kind of hydraulic system for realizing the stepless accurate speed governing of hydraulic press - Google Patents
A kind of hydraulic system for realizing the stepless accurate speed governing of hydraulic press Download PDFInfo
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- CN206530575U CN206530575U CN201620964600.4U CN201620964600U CN206530575U CN 206530575 U CN206530575 U CN 206530575U CN 201620964600 U CN201620964600 U CN 201620964600U CN 206530575 U CN206530575 U CN 206530575U
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- way valve
- adjusting module
- speed adjusting
- mouths
- valve
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Abstract
The utility model discloses a kind of hydraulic system for realizing the accurate speed governing of hydraulic press large-scale stepless, mainly include main pump source, auxiliary pumping source, a wide range of speed adjusting module, small range speed adjusting module, the first two-way valve, the second two-way valve, the 3rd two-way valve, main hydraulic cylinder and sliding block.The combination application in ratio variable-flow main pump source, a wide range of speed adjusting module and small range speed adjusting module so that the utility model possesses three-step timing function, speed adjustable range is wide, precision is high, is fully able to meet the various work requirements of hydraulic press；The restriction loss of hydraulic system is few, with preferable energy conservation characteristic.
Description
Technical field
The utility model is related to a kind of hydraulic system for realizing the stepless accurate speed governing of hydraulic press, particularly great tonnage hydraulic machine
Hydraulic speed regulation system.
Background technology
The hydraulic press of hydraulic press, particularly large-tonnage, due to its specific operating mode, it usually needs stepless in very wide range
Accurate speed governing, how to accomplish the speed regulation in accurate, a wide range of is must take into consideration in the design of Hydraulic System of hydraulic press
One key factor.
Utility model content
In order to solve the above-mentioned technical problem, the utility model, which provides one kind, can effectively realize the stepless accurate tune of hydraulic press
The hydraulic system of speed.
It is as follows that the utility model solves the technical scheme that its technical problem used：
A kind of hydraulic system for realizing the stepless accurate speed governing of hydraulic press of the utility model, it is characterized in that：Including main pump source, auxiliary
Help pumping source, a wide range of speed adjusting module, small range speed adjusting module, the first two-way valve, the second two-way valve, the 3rd two-way valve,
Main hydraulic cylinder and sliding block, the oil-out in main pump source are connected with the A mouths of the first two-way valve and the P mouths of the 3rd two-way valve, the
The A mouths of three two-way valves are connected with the A mouths and main hydraulic cylinder of the second two-way valve, aid in the oil-out and a wide range of tune of pumping source
The P mouths of fast module and the P mouths connection of small range speed adjusting module, the A mouths of a wide range of speed adjusting module and the P mouths of the first two-way valve
Connection, the A mouths of small range speed adjusting module are connected with the P mouths of the second two-way valve, the T mouths and small range of a wide range of speed adjusting module
The T mouths of speed adjusting module connect fuel tank, and main hydraulic cylinder is mechanically coupled together with sliding block.
Further, the main pump source possesses ratio variable-flow function, can be AC asynchronous motor band ratio pump group,
The quantitative pump group of servomotor band or servomotor band ratio pump group.
Further, a wide range of speed adjusting module described in the utility model can be big flow ratio valve group, big flow servo
Valve group or big flow servo ratio valve group.
Further, small range speed adjusting module described in the utility model can be low discharge ratio valve group, low discharge servo
Valve group or low discharge servo ratio valve group.
Further, the first two-way valve described in the utility model, the second two-way valve, the 3rd two-way valve can be tools
There is the inserting valve group of identical function.
Further, pressure sensor, main hydraulic cylinder are housed on the connecting line of main hydraulic cylinder described in the utility model
Upper that displacement transducer is housed, realizing the hydraulic system of the stepless accurate speed governing of hydraulic press also includes PLC control system, PLC controls system
System by signal wire respectively with main pump source, a wide range of speed adjusting module, small range speed adjusting module, the first two-way valve, the second two-way
Ball valve, the 3rd two-way valve, pressure sensor and displacement transducer connection.
Compared with prior art, the beneficial effects of the utility model are as follows：
1st, the combination application of ratio variable-flow main pump source, a wide range of speed adjusting module and small range speed adjusting module so that this reality
Adjusted with the new valve control for possessing three-step timing function, i.e. pump control speed-regulating function, large-scale valve controlled velocity modulation function and small range
Fast function, speed adjustable range is wide, precision is high, is fully able to meet the various work requirements of hydraulic press.
2nd, three-step timing function of the present utility model, not only causes hydraulic tools for the accurate speed governing work(of large-scale stepless
Can, and the restriction loss of hydraulic system also substantially reduces, and energy conservation characteristic is greatly improved.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is a kind of realization principle figure of a wide range of speed adjusting module.
Fig. 3 is a kind of realization principle figure of small range speed adjusting module.
Fig. 4 is to apply a kind of schematic diagram of electrohydraulic control system of the present utility model.
Fig. 5 is the speed control schematic diagram that the utility model enters the stage in low speed work.
In Fig. 1：1. main pump source, 2. auxiliary pumping sources, 3. a wide range of speed adjusting modules, 4. small range speed adjusting modules, 5. the 1st
Pass ball valve, 6. second two-way valves, 7. the 3rd two-way valves, 8. main hydraulic cylinders, 9. sliding blocks.
In Fig. 4：1. main pump source, 2. auxiliary pumping sources, 3. big orifice servo proportions, 4. small latus rectum servo proportions, 5. the
One two-way valve, 6. second two-way valves, 7. the 3rd two-way valves, 8. main hydraulic cylinders, 9. sliding blocks, 10. pressure sensors, 11.
Displacement transducer, 12. man-machine interfaces, 13.PLC control systems.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
Referring to Fig. 1, the utility model mainly includes：Main pump source 1, auxiliary pumping source 2, a wide range of speed adjusting module 3, small range are adjusted
Fast 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 sliding block 9, main pump source 1
Oil-out is connected with the A mouths of the first two-way valve 5 and the P mouths of the 3rd two-way valve 7, the A mouths and second of the 3rd two-way valve 7
The A mouths and main hydraulic cylinder 8 of two-way valve 6 are connected, and aid in the P mouths of oil-out and a wide range of speed adjusting module 3 of pumping source 2 and small
The P mouths connection of scope speed adjusting module 4, the A mouths of a wide range of speed adjusting module 3 are connected with the P mouths of the first two-way valve 5, and small range is adjusted
The A mouths of fast module 4 are connected with the P mouths of the second two-way valve 6, the T mouths and small range speed adjusting module 4 of a wide range of speed adjusting module 3
T mouths connect fuel tank, main hydraulic cylinder 8 and sliding block 9 are mechanically coupled together.
Referring to Fig. 2, a wide range of speed adjusting module 3 described in the utility model can be realized by a big orifice servo proportion,
For example with 25 latus rectum 4WRVE type servo proportions of German Rexroth companies.
Referring to Fig. 3, small range speed adjusting module 4 described in the utility model can be realized by one small latus rectum servo proportion,
For example with 6 latus rectum 4WRREH type servo proportions of German Rexroth companies.
Small latus rectum servo proportion shown in big orifice servo proportion shown in Fig. 2 and Fig. 3 is applied to the utility model
, a kind of schematic diagram of typical electrohydraulic control system is as shown in Figure 4.
Referring to Fig. 4, the pressure in main hydraulic cylinder 8 described in the utility model can be by the pressure sensor 10 on pipeline
Measured, the displacement of main hydraulic cylinder 8 can be as measured by the displacement transducer 11 on main hydraulic cylinder 8, and man-machine interface 12 is led
It is responsible for inputting and shows some basic parameters of hydraulic press, it is communicated between PLC control system 13 by bus,
The mainly work such as action control, data acquisition of responsible hydraulic press of PLC control system 13, PLC control system 13 passes through AI modules
The pressure signal from pressure sensor 10 and the displacement signal from displacement transducer 11 are gathered, PLC control system 13 is led to
Cross the magnet switching that DO modules control the first two-way valve 5, the second two-way valve 6 and the 3rd two-way valve 7, PLC controls system
System 13 controls flow, the opening of big orifice servo proportion 3 and the small latus rectum servo proportion 4 in main pump source 1 by AO modules
Opening.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, operation principle of the present utility model is as follows：
Enter the stage in low speed work, PLC control system 13 controls the first two-way valve 5, the second two-way valve by DO modules
6th, the electromagnet of the 3rd two-way valve 7 obtains electric or power-off：The defeated of main pump source 1 is depended on by the flow of the 3rd two-way valve 7
Outflow and the flow by big orifice servo proportion 3, both is controlled by PLC control system 13；Pass through the two or two
The flow of pass ball valve 6 is determined by the flow of small latus rectum servo proportion 4, and the flow is equally controlled by PLC control system 13
System；Main hydraulic cylinder 8 is entered as total driving flow by the resultant flow of the 3rd two-way valve 7 and the second two-way valve 6, driven
Dynamic main hydraulic cylinder 8 is down run；So that hydraulic press is run according to displacement set in advance-rate curve.
Referring to Fig. 5, the utility model is as follows in the speed control principle that low speed work is entered：
PLC control system 13 passes through AI modules displacement signal of the collection from displacement transducer 11, and calculate phase in real time
The rate signal answered, tables look-up according to current displacement signal and displacement-rate curve set in advance and obtains current speed command,
Gained speed command is compared with present speed, obtains present speed deviation, and controller receives speed command and velocity deviation simultaneously,
And flow instruction, open order 3 and open order 4 are calculated according to certain control algolithm, the output in main pump source 1 is controlled respectively
The opening of flow, the opening of big orifice servo proportion 3 and small latus rectum servo proportion 4, it is the output flow in main pump source 1, logical
The flow of big orifice servo proportion 3 and the flow of small latus rectum servo proportion 4, which are crossed, as total driving flow goes driving to lead
Hydraulic cylinder 8 so that hydraulic press is run according to displacement set in advance-rate curve.
It should be noted that：The utility model shown in Fig. 5 low speed work enter the stage speed control schematic diagram and on
State and bright be all based on electrohydraulic control system shown in Fig. 4.
Claims (1)
1. a kind of hydraulic system for realizing the stepless accurate speed governing of hydraulic press, it is characterized in that：Including main pump source (1), auxiliary pumping source
(2), a wide range of speed adjusting module (3), small range 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 sliding block (9), the oil-out of main pump source (1) and the A mouths of the first two-way valve (5) and
The P mouths connection of 3rd two-way valve (7), A mouths and the A mouths of the second two-way valve (6) and the main hydraulic pressure of the 3rd two-way valve (7)
Cylinder (8) is connected, the oil-out of auxiliary pumping source (2) and the P mouths and the P of small range speed adjusting module (4) of a wide range of speed adjusting module (3)
Mouth connection, the A mouths of a wide range of speed adjusting module (3) are connected with the P mouths of the first two-way valve (5), the A of small range speed adjusting module (4)
Mouth is connected with the P mouths of the second two-way valve (6), the T mouths of a wide range of speed adjusting module (3) and the T mouths of small range speed adjusting module (4)
Fuel tank is connected, main hydraulic cylinder (8) and sliding block (9) are mechanically coupled together；The main pump source (1) possesses ratio variable-flow work(
Can, it is that AC asynchronous motor quantifies one of pump group or servomotor with ratio pump group with ratio pump group, servomotor band
Kind；The a wide range of speed adjusting module (3) is big flow ratio valve group, big flow servo valve group or big flow servo ratio valve group
It is a kind of；The small range speed adjusting module (4) is low discharge ratio valve group, low discharge servo valve group or low discharge servo ratio valve group
One kind；First two-way valve (5), the second two-way valve (6), the 3rd two-way valve (7) are inserting with identical function
Fill valve group；It is equipped with the connecting line of described main hydraulic cylinder (8) on pressure sensor (10), main hydraulic cylinder (8) and displacement is housed
Sensor (11), realizing the hydraulic system of the stepless accurate speed governing of hydraulic press also includes PLC control system (13), PLC control system
(13) by signal wire respectively with main pump source (1), a wide range of speed adjusting module (3), small range speed adjusting module (4), the first two-way ball
Valve (5), the second two-way valve (6), the 3rd two-way valve (7), pressure sensor (10) and displacement transducer (11) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620964600.4U CN206530575U (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 |
|---|---|---|---|
| CN201620964600.4U CN206530575U (en) | 2016-08-29 | 2016-08-29 | A kind of hydraulic system for realizing the stepless accurate speed governing of hydraulic press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206530575U true CN206530575U (en) | 2017-09-29 |
Family
ID=59922416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620964600.4U Withdrawn - After Issue CN206530575U (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 |
|---|---|
| CN (1) | CN206530575U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122186A (en) * | 2016-08-29 | 2016-11-16 | 南通锻压设备股份有限公司 | A kind of hydraulic system realizing the stepless accurate speed governing of hydraulic press |
| CN109201996A (en) * | 2018-10-06 | 2019-01-15 | 江苏金源高端装备股份有限公司 | A kind of stamp forging hydraulic press control system |
-
2016
- 2016-08-29 CN CN201620964600.4U patent/CN206530575U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122186A (en) * | 2016-08-29 | 2016-11-16 | 南通锻压设备股份有限公司 | A kind of hydraulic system realizing the stepless accurate speed governing of hydraulic press |
| CN109201996A (en) * | 2018-10-06 | 2019-01-15 | 江苏金源高端装备股份有限公司 | A kind of stamp forging hydraulic press control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170929 Effective date of abandoning: 20180626 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170929 Effective date of abandoning: 20180626 |