CN106151127A - The double oil cylinder synchronous lift control method of flash trimmer and device - Google Patents
The double oil cylinder synchronous lift control method of flash trimmer and device Download PDFInfo
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- CN106151127A CN106151127A CN201610649822.1A CN201610649822A CN106151127A CN 106151127 A CN106151127 A CN 106151127A CN 201610649822 A CN201610649822 A CN 201610649822A CN 106151127 A CN106151127 A CN 106151127A
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- 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
- F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
- F15B9/16—Systems essentially having two or more interacting servomotors, e.g. multi-stage
- F15B9/17—Systems essentially having two or more interacting servomotors, e.g. multi-stage with electrical control means
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Abstract
The present invention relates to the double oil cylinder synchronous lift control method of a kind of flash trimmer, comprise the steps: to gather respectively piston displacement h1, h2 of 2 oil cylinders；When | h1 h2 | is during≤a, it is V1 motion that 2 oil cylinders keep speed；When | h1 h2 | is during ＞ a, it is judged that the size of h1 and h2: as h1 ＞ h2, the first oil cylinder stop motion, the second oil cylinder continues motion with speed V1；As h1 ＜ h2, the second oil cylinder stop motion, the first oil cylinder continues motion with speed V1；Until during h1=h2,2 oil cylinders move with speed V1；When h h1≤b sets up, 2 oil cylinders move with speed V2；Until h=h1, flash trimmer double oil cylinder synchronization lifting control terminates.The present invention also provides a kind of flash trimmer double oil cylinder synchronous lifting control device.The method and device can make 2 oil cylinder synchronizations of flash trimmer, thus improve the service life of oil cylinder, decrease deburring cost.
Description
Technical field
The invention belongs to continuous casting production field, be specifically related to the double oil cylinder synchronous lift control method of a kind of flash trimmer and dress
Put.
Background technology
In continuous casting production process, strand is cut into block under the effect of flame cutting machine high-speed flame, is cutting through
In journey, high-temperature steel stream (lancing location) bottom strand forms molten steel, through being cooled into hard burr.I.e. continuous casting billet is in cutting
During can leave a steel burr in bottom.Owing to burr is mainly made up of molten steel and impurity, its attachment on strand
Power is very strong, and therefore strand burr is very difficult to totally, and burr can enter subsequent hot rolled operation with strand, not only can make roll
Become damage, occur roll the problem such as to lose flesh, also result in band steel and scab, ftracture, the mass defect such as be mingled with, greatly reduce
Band steel lumber recovery, therefore improves strand deburring rate significant.But existing flash trimmer generally includes 2 oil cylinders, 2 oil
Cylinder lays respectively at the two ends of rotary shaft, mainly by the flexible lifting realizing rotary shaft of oil cylinder, is therefore commonly present 2 oil cylinders
Nonsynchronous problem so that flash trimmer effect is undesirable, and oil cylinder is short for service life, adds deburring cost.
Content of the invention
The technical problem to be solved is to provide the double oil cylinder synchronous lift control method of a kind of flash trimmer and dress
Putting, the method and device can make 2 oil cylinder synchronizations of flash trimmer, thus improve the service life of oil cylinder, decrease unhairing
Thorn cost.
The technical solution adopted in the present invention is:
The double oil cylinder synchronous lift control method of a kind of flash trimmer, comprises the steps:
1) speed, making the first oil cylinder and the second oil cylinder is V1；
2) the piston displacement h1 of the first oil cylinder and the piston displacement h2 of the second oil cylinder, is gathered；
3), as | h1-h2 |≤a, it is V1 motion, wherein, 0≤a≤5mm that the first oil cylinder and the second oil cylinder keep speed；
As | h1-h2 | ＞ a, it is judged that the size of h1 and h2:
As h1 ＞ h2, the first oil cylinder stop motion, the second oil cylinder continues motion with speed V1, until during h1=h2, the first oil cylinder
Move with speed V1 with the second oil cylinder；
As h1 ＜ h2, the second oil cylinder stop motion, the first oil cylinder continues motion with speed V1, until during h1=h2, the first oil cylinder
Move with speed V1 with the second oil cylinder；
4), when h-h1≤b sets up, making the first oil cylinder and the second oil cylinder move with speed V2, wherein, 0≤b≤5mm, h is for being
System sets oil cylinder lifting height；Until h=h1, flash trimmer double oil cylinder synchronization lifting control terminates.
By such scheme, described h is in the range of 10mm≤h≤400mm, so that the running status of oil cylinder is optimized.
By such scheme, described V1 is in the range of 800mm/s≤V1≤1200 mm/s；Described V2 is in the range of 50mm/
s≤V2≤100 mm/s.Oil cylinder rises the initial stage, uses bigger speed V1 to be controlled oil cylinder, it is achieved that the quick fortune of oil cylinder
Dynamic, when oil cylinder displacement reaches setting value soon, use less speed V2 to be controlled oil cylinder, it is to avoid oil cylinder and top positioning
The rigid collision of block, improves oil cylinder service life.
By such scheme, the import of 2 oil cylinders is all direct to be connected with main hydraulic system, and in import department's peace of each oil cylinder
It is provided with pressure regulating system.
By such scheme, the span of a is: the span of 2≤a≤5mm, b is: 2≤b≤5mm.
The present invention also provides a kind of flash trimmer double oil cylinder synchronous lifting control device, including 2 oil cylinders, main hydraulic pressure systems
System, pressure regulating system, monitoring position comparison system, speed control system；
The import of 2 oil cylinders is all direct to be connected with main hydraulic system；Avoid pressure instability or pressure distribution is uneven to oil cylinder work
The impact made；Described pressure regulating system has 2, is installed in the import department of oil cylinder respectively；Pressure regulating system can be to oil cylinder work
It is adjusted as pressure, meet the needs of oil cylinder different operating pressure, and ensure the uniformity of 2 oil cylinder working-pressures；
Monitoring position comparison system includes being installed in in-oil cylinder displacement transducer, for entering the physical location of the piston of oil cylinder
Line trace is measured, and displacement transducer collects displacement data and carries out calculating and compare, and result is passed to speed control system；
Speed control system controls the speed of service (speed of 2 oil cylinders respectively according to the data that monitoring position comparison system transmits
The stretching speed of control system control oil cylinder piston), it is achieved the lifting simultaneously and rapidly of two oil cylinders.
Its principle is as follows:
When continuous casting billet is near rotary shaft, general control system sends and lifts instruction；The now hydraulic pressure of the first oil cylinder and the second oil cylinder
Control valve simultaneously electric, main hydraulic system give 2 oil cylinder fuel feeding, the piston of 2 oil cylinders is with speed V1 fast upward motion；Piston
Upwards in motion process, measured and right by the displacement to the first oil cylinder and the second oil cylinder respectively of monitoring position comparison system
Than analysis (displacement of the first oil cylinder is h1, and the displacement of the second oil cylinder is h2), and according to different comparing results, oil cylinder is controlled
System.
The beneficial effects of the present invention is:
Method and apparatus gathers the same of oil cylinder piston displacement and 2 oil cylinders of Negotiation speed control realization by displacement transducer
Step, thus improve the service life of oil cylinder, decrease deburring cost；
Each oil cylinder import is all direct to be connected with main hydraulic system, and at oil cylinder, import department is designed with pressure regulating system, it is achieved that
Oil cylinder working-pressure is controllable, effectively prevent pressure instability or the uneven impact on cylinder efficient of pressure distribution, it is ensured that oil cylinder
Properly functioning；
Speed control system can carry out reasonable adjusting and control to oil cylinder rising or falling speed as required, it is ensured that 2 oil cylinders can synchronize
Run, thus improve the service life of oil cylinder, it is achieved reduce the purpose of deburring cost；
Monitoring position comparison system not only achieves the precision measure of oil cylinder position, and right in real time by carrying out oil cylinder position
Ratio, it is thus possible to make flash trimmer regulate the oil cylinder that offset deviation is bigger in time, it is to avoid sends out in rotary shaft lifting process
Raw relatively large deviation, it is achieved the Fast synchronization lifting of the rotary shaft of flash trimmer.
Brief description
Fig. 1 be displacement transducer of the present invention install schematic diagram；
Fig. 2 is the structured flowchart of the double oil cylinder synchronous lifting control device of flash trimmer of the present invention；
Fig. 3 is the flow chart of the double oil cylinder synchronous lift control method of flash trimmer of the present invention.
Wherein: the 1st, rotary shaft, the 2nd, the first oil cylinder, the 3rd, the second oil cylinder, the 4th, displacement transducer.
Detailed description of the invention
Further illustrate embodiments of the invention below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, the double oil cylinder synchronous lifting control device of a kind of flash trimmer, including the first oil cylinder the 2nd, the second oil
Cylinder the 3rd, main hydraulic system, pressure regulating system, monitoring position comparison system, speed control system；
First oil cylinder the 2nd, the second oil cylinder 3 lays respectively at the two ends of rotary shaft 1, mainly realizes rotary shaft by oil cylinder flexible
Lifting, the import of the first oil cylinder the 2nd, the second oil cylinder 3 is all direct to be connected with main hydraulic system；Avoid pressure instability or pressure distribution
The uneven impact on the 2nd, the second oil cylinder 3 work of the first oil cylinder；
Pressure regulating system has 2, is installed in the import department of the first oil cylinder the 2nd, the second oil cylinder 3 respectively；Pressure regulating system can be right
First oil cylinder the 2nd, the second oil cylinder 3 operating pressure is adjusted, and meets the need of the first oil cylinder the 2nd, the second oil cylinder 3 different operating pressure
Want, and ensure the uniformity of the first oil cylinder the 2nd, the second oil cylinder 3 pressure；
Monitoring position comparison system has 2, includes the displacement transducer 4 being installed in the first oil cylinder the 2nd, the second oil cylinder 3 respectively, uses
In being tracked measurement to the physical location of the first oil cylinder the 2nd, piston of the second oil cylinder 3, displacement transducer 4 is collected displacement number
Compare according to carrying out calculating, and result is passed to speed control system；
Speed control system has 2, controls the first oil cylinder the 2nd, respectively according to the data that monitoring position comparison system transmits respectively
The speed of service (stretching speed of speed control system control oil cylinder piston) of two oil cylinders 3, it is achieved the first oil cylinder the 2nd, the second oil cylinder 3
Lifting simultaneously and rapidly.
Pressure regulating system, speed control system are connected with general control system.
Its principle is as follows:
When continuous casting billet is near rotary shaft 1, general control system sends and lifts instruction；The now liquid of the first oil cylinder the 2nd, the second oil cylinder 3
Pressure control valve simultaneously electric, main hydraulic system give the first oil cylinder the 2nd, the second oil cylinder 3 fuel feeding, the work of the first oil cylinder the 2nd, the second oil cylinder 3
Plug is with speed V1 fast upward motion；During piston upwards, by monitoring position comparison system respectively to the first oil cylinder
2nd, the displacement of the second oil cylinder 3 measures and comparative analysis (displacement of the first oil cylinder is h1, and the displacement of the second oil cylinder is h2), and
It is controlled according to the different movement velocitys to the first oil cylinder the 2nd, the second oil cylinder 3 piston for the comparing result, thus realize two oil cylinders
Lifting simultaneously and rapidly.
As it is shown on figure 3, the double oil cylinder synchronous lift control method of a kind of flash trimmer, the method is: when continuous casting billet is near rotation
During rotating shaft, general control system sends and lifts instruction；Now the hydraulic control valve of the first oil cylinder and the second oil cylinder simultaneously electric, main liquid
Pressure system gives the first oil cylinder and the second oil cylinder fuel feeding, and the piston of the first oil cylinder and the second oil cylinder is with speed V1 fast upward motion；
During piston upwards, entered by the displacement to the first oil cylinder and the piston of the second oil cylinder respectively of monitoring position comparison system
Row measurement and comparative analysis (displacement of the piston of the first oil cylinder is h1, and the displacement of the piston of the second oil cylinder 2 is h2), and according to not
It is controlled with the speed to the first oil cylinder and the second oil cylinder for the comparing result；Particularly as follows:
1), main hydraulic system gives the first oil cylinder and the second oil cylinder fuel feeding, and speed control system makes the first oil cylinder and the second oil cylinder
The speed of piston is V1；
2), monitoring position comparison system gathers the displacement h1 of the piston of the first oil cylinder and the displacement h2 of the piston of the second oil cylinder；
3), as | h1-h2 |≤a, it is V1 motion that the piston of the first oil cylinder and the second oil cylinder keeps speed, wherein, and 0≤a≤
5mm；
As | h1-h2 | ＞ a, it is judged that the size of h1 and h2:
1. as h1 ＞ h2, the piston stop motion of the first oil cylinder, the piston of the second oil cylinder continues motion with speed V1, until h1
During=h2, the piston of the first oil cylinder and the second oil cylinder moves with speed V1, and wherein, V1 is in the range of 800mm/s≤V1≤1200
mm/s；
2. as h1 ＜ h2, the piston stop motion of the second oil cylinder, the piston of the first oil cylinder continues motion with speed V1, until h1
During=h2, the piston of the first oil cylinder and the second oil cylinder moves with speed V1；
4), with 2 oil cylinders piston continue rise, as h-h1≤b, Negotiation speed regulator control system control make the first oil cylinder and
The piston of the second oil cylinder moves with speed V2, and wherein, 0≤b≤5mm, 50mm/s≤V2≤100 mm/s, h are default oil
Cylinder piston lifting height, 10mm≤h≤400mm；Until h=h1,2 oil cylinder pressurizes remain highly constant, the double oil cylinder of flash trimmer
Synchronization lifting control terminates.
Embodiment 1
The double oil cylinder synchronous lift control method of a kind of flash trimmer, comprises the steps:
1), main hydraulic system gives the first oil cylinder and the second oil cylinder fuel feeding, and speed control system makes the first oil cylinder and the second oil cylinder
The speed of piston is 1100 mm/s；
2), monitoring position comparison system gathers the displacement h1 of the piston of the first oil cylinder and the displacement h2 of the piston of the second oil cylinder；
3), when | h1-h2 |≤4, it is 1100 mm/s motions that the piston of the first oil cylinder and the second oil cylinder keeps speed；
As | h1-h2 | ＞ 4, it is judged that the size of h1 and h2:
1., as h1 ＞ h2, the piston stop motion of the first oil cylinder, the piston of the second oil cylinder continues fortune with speed 1100 mm/s
Dynamic, until during h1=h2, the piston of the first oil cylinder and the second oil cylinder moves with speed 1100 mm/s；
2., as h1 ＜ h2, the piston stop motion of the second oil cylinder, the piston of the first oil cylinder continues fortune with speed 1100 mm/s
Dynamic, until during h1=h2, the piston of the first oil cylinder and the second oil cylinder moves with speed 1100 mm/s；
4), with 2 oil cylinders piston continue rise, when h-h1≤5, Negotiation speed regulator control system control make the first oil cylinder and
The piston of the second oil cylinder moves with speed 80 mm/s, and wherein, h is default oil cylinder piston lifting height, h=400mm；Directly
To h=h1,2 oil cylinder pressurizes remain highly constant, and flash trimmer double oil cylinder synchronization lifting control terminates.
Embodiment 2
The double oil cylinder synchronous lift control method of a kind of flash trimmer, comprises the steps:
1), main hydraulic system gives the first oil cylinder and the second oil cylinder fuel feeding, and speed control system makes the first oil cylinder and the second oil cylinder
The speed of piston is 900mm/s；
2), monitoring position comparison system gathers the displacement h1 of the piston of the first oil cylinder and the displacement h2 of the piston of the second oil cylinder；
3), when | h1-h2 |≤3, it is 900mm/s motion that the piston of the first oil cylinder and the second oil cylinder keeps speed；
As | h1-h2 | ＞ 3, it is judged that the size of h1 and h2:
1. as h1 ＞ h2, the piston stop motion of the first oil cylinder, the piston of the second oil cylinder continues motion with speed 900mm/s,
Until during h1=h2, the piston of the first oil cylinder and the second oil cylinder moves with speed 900mm/s；
2. as h1 ＜ h2, the piston stop motion of the second oil cylinder, the piston of the first oil cylinder continues motion with speed 900mm/s,
Until during h1=h2, the piston of the first oil cylinder and the second oil cylinder moves with speed 900mm/s；
4), with 2 oil cylinders piston continue rise, when h-h1≤5, Negotiation speed regulator control system control make the first oil cylinder and
The piston of the second oil cylinder moves with speed 50mm/s, and wherein, h is default oil cylinder piston lifting height, h=300mm；Until
H=h1,2 oil cylinder pressurizes remain highly constant, and flash trimmer double oil cylinder synchronization lifting control terminates.
Embodiment 3
The double oil cylinder synchronous lift control method of a kind of flash trimmer, comprises the steps:
1), main hydraulic system gives the first oil cylinder and the second oil cylinder fuel feeding, and speed control system makes the first oil cylinder and the second oil cylinder
The speed of piston is 800mm/s；
2), monitoring position comparison system gathers the displacement h1 of the piston of the first oil cylinder and the displacement h2 of the piston of the second oil cylinder；
3), when | h1-h2 |≤2, it is 800mm/s motion that the piston of the first oil cylinder and the second oil cylinder keeps speed；
As | h1-h2 | ＞ 2, it is judged that the size of h1 and h2:
1. as h1 ＞ h2, the piston stop motion of the first oil cylinder, the piston of the second oil cylinder continues motion with speed 800mm/s,
Until during h1=h2, the piston of the first oil cylinder and the second oil cylinder moves with speed 800mm/s；
2. as h1 ＜ h2, the piston stop motion of the second oil cylinder, the piston of the first oil cylinder continues motion with speed 800mm/s,
Until during h1=h2, the piston of the first oil cylinder and the second oil cylinder moves with speed 800mm/s；
4), with 2 oil cylinders piston continue rise, when h-h1≤1, Negotiation speed regulator control system control make the first oil cylinder and
The piston of the second oil cylinder moves with speed 60mm/s, and wherein, h is default oil cylinder piston lifting height, h=180mm；Directly
To h=h1,2 oil cylinder pressurizes remain highly constant, and flash trimmer double oil cylinder synchronization lifting control terminates.
Embodiment 4
The double oil cylinder synchronous lift control method of a kind of flash trimmer, comprises the steps:
1), main hydraulic system gives the first oil cylinder and the second oil cylinder fuel feeding, and speed control system makes the first oil cylinder and the second oil cylinder
The speed of piston is 1000mm/s；
2), monitoring position comparison system gathers the displacement h1 of the piston of the first oil cylinder and the displacement h2 of the piston of the second oil cylinder；
3), when | h1-h2 |≤1, it is 1000mm/s motion that the piston of the first oil cylinder and the second oil cylinder keeps speed, wherein, 0≤
a≤5mm；
As | h1-h2 | ＞ 1, it is judged that the size of h1 and h2:
1. as h1 ＞ h2, the piston stop motion of the first oil cylinder, the piston of the second oil cylinder continues motion with speed 1000mm/s,
Until during h1=h2, the piston of the first oil cylinder and the second oil cylinder moves with speed 1000mm/s；
2. as h1 ＜ h2, the piston stop motion of the second oil cylinder, the piston of the first oil cylinder continues motion with speed 1000mm/s,
Until during h1=h2, the piston of the first oil cylinder and the second oil cylinder moves with speed 1000mm/s；
4), with 2 oil cylinders piston continue rise, when h-h1≤5, Negotiation speed regulator control system control make the first oil cylinder and
The piston of the second oil cylinder moves with speed 70mm/s, and wherein, h is default oil cylinder piston lifting height, h=290mm；Until
H=h1,2 oil cylinder pressurizes remain highly constant, and flash trimmer double oil cylinder synchronization lifting control terminates.
At present, 6 flash trimmers of Wuhan Iron and Steel Plant steel-making head factory three subsidiary factory have used the double oil cylinder synchronization lifting control of this flash trimmer all
Device processed.Since coming into operation, three steel-making continuous casting base deburring rates bring up to 99.9% from original 85%, efficiently solve burr and go not
Net problem, equipment fault number of times is reduced to 0 from original 30 times/year, through Finance Department of the Wuhan Iron and Steel Plant joint-stock company finance of head factory in steel-making
Section's examination & verification average annual wound effect 1140.5 ten thousand yuan, remarkable benefit.
Claims (5)
1. a flash trimmer pair oil cylinder synchronous lift control method, it is characterised in that comprise the steps:
1) speed, making the first oil cylinder and the second oil cylinder is V1；
2) the piston displacement h1 of the first oil cylinder and the piston displacement h2 of the second oil cylinder, is gathered；
3), as | h1-h2 |≤a, it is V1 motion, wherein, 0≤a≤5mm that the first oil cylinder and the second oil cylinder keep speed；
As | h1-h2 | ＞ a, it is judged that the size of h1 and h2:
As h1 ＞ h2, the first oil cylinder stop motion, the second oil cylinder continues motion with speed V1, until during h1=h2, the first oil cylinder
Move with speed V1 with the second oil cylinder；
As h1 ＜ h2, the second oil cylinder stop motion, the first oil cylinder continues motion with speed V1, until during h1=h2, the first oil cylinder
Move with speed V1 with the second oil cylinder；
4), when h-h1≤b sets up, the first oil cylinder and the second oil cylinder move with speed V2, and wherein, 0≤b≤5mm, h are system
Set oil cylinder lifting height；Until h=h1, flash trimmer double oil cylinder synchronization lifting control terminates.
2. method according to claim 1, it is characterised in that: described h is in the range of 10mm≤h≤400mm.
3. method according to claim 1, it is characterised in that: described V1 is in the range of 800mm/s≤V1≤1200
mm/s；Described V2 is in the range of 50mm/s≤V2≤100 mm/s.
4. the method according to arbitrary in claim 1-3, it is characterised in that: the import of 2 oil cylinders all directly with main hydraulic pressure
System is connected, and is installed on pressure regulating system in the import department of each oil cylinder.
5. the device that in claim 1-4, arbitrary described method is used, it is characterised in that: include 2 oil cylinders, main hydraulic pressure
System, pressure regulating system, monitoring position comparison system, speed control system；
The import of described 2 oil cylinders is all direct to be connected with main hydraulic system；Described pressure regulating system has 2, is installed in respectively
The import department of oil cylinder；
Described monitoring position comparison system includes being installed in in-oil cylinder displacement transducer respectively, puts displacement transducer collection in place
Shifting data carry out calculating and compare, and result is passed to speed control system；Speed control system is according to monitoring position comparison system
The data transmitting control the speed of service of 2 oil cylinders respectively.
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| CN108526595A (en) * | 2018-04-09 | 2018-09-14 | 武汉科技大学 | A kind of deburring machine cutter shaft with defencive function |
| CN111174889A (en) * | 2020-02-04 | 2020-05-19 | 中冶南方连铸技术工程有限责任公司 | Automatic casting blank weighing system and method |
| CN111189524A (en) * | 2020-02-04 | 2020-05-22 | 中冶南方连铸技术工程有限责任公司 | Anti-impact weighing system and method for pull type weighing sensor |
| CN112285113A (en) * | 2020-09-28 | 2021-01-29 | 维信诺科技股份有限公司 | Macroscopic defect inspection machine |
| CN114109963A (en) * | 2021-11-19 | 2022-03-01 | 济南悉通液压设备配套有限公司 | Operation control method for oil cylinder of corner combining machine and hydraulic system |
| CN114109963B (en) * | 2021-11-19 | 2023-12-15 | 济南悉通液压设备配套有限公司 | Corner-assembled engine oil cylinder operation control method and hydraulic system |
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|---|---|
| CN106151127B (en) | 2018-09-11 |
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