CN105458194B - Continuous cast mold one side non-sine drive device - Google Patents
Continuous cast mold one side non-sine drive device Download PDFInfo
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- CN105458194B CN105458194B CN201510778702.7A CN201510778702A CN105458194B CN 105458194 B CN105458194 B CN 105458194B CN 201510778702 A CN201510778702 A CN 201510778702A CN 105458194 B CN105458194 B CN 105458194B
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- eccentric shaft
- vibration
- drive device
- waveform generator
- shake table
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/053—Means for oscillating the moulds
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- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
One kind is for realizing conticaster crystallizer one side non-sine drive device, mainly it is made up of waveform generator and shake table, wherein waveform generator includes the servomotor of variable-ratio, constant speed motor, two-freedom differential gear train and eccentric shaft, after two speed of motor synthesize through differential gear train, make eccentric shaft realize speed change swaying movement regularity, eccentric shaft promotes the shake table that full leaf spring is oriented to realize non-sinusoidal oscillation by connecting rod, and whole waveform generator is arranged on the inner or outer side of the imitative arc track of shake table.The device can be used for small billet, the conticaster of the multi-stream casting such as small round billet and small Hot Metal in Beam Blank, realize non-sinusoidal oscillation of mould, and can real-time online adjustment amplitude, shake the vibration parameters such as frequency and waveform.
Description
Technical field
The invention belongs to continuously casting field, more particularly to a kind of non-sinusoidal oscillation device of crystallizer.
Background technology
Continuous casting steel machine is the core link of current steel production, and during pouring molten steel to crystallizer, crystallizer must
Must be vibrated according to certain rules, to ensure the lubricating condition of strand and crystallizer, so as to prevent crystallizer and newborn green shell it
Between bond caused by bleed-out accident.With the depth that people are recognized various complicated Physical Mechanisms between strand and crystallizer
Enter, non-sinusoidal oscillation is acknowledged as realizing at present the optimum waveform of high efficiency continuous casting, therefore developing operation reliability, waveform stabilization,
Safeguard that simple advanced non-sine drives the hot issue that equipment is always the research of domestic and international project circle.
For the cast less square billet of cross sectional dimensions, the crystallizer such as round billet and rectangular bloom, due to its lighter weight, vibration
Device is typically made up of a waveform generator and crystallizer vibration platform, and waveform generator is arranged in shake table side, therefore claims it
It is unilateral drive device.Current unilateral non-sine drive device is different according to the power source of waveform generator, can be divided into hydraulic pressure
Formula and the major class of electrodynamic type two.
The Chinese patent of Application No. CN201420042628.3, discloses a kind of fluid pressure type one side non-sine and drives dress
Put, the shake table that full leaf spring is oriented to is directly driven by a servo hydraulic cylinder, by SERVO CONTROL, hydraulic cylinder is stretched by given rule
Contracting motion, so as to drive crystallizer to do non-sinusoidal oscillation by the arching trajectory of setting.Although fluid pressure type non-sine drive device can
Easily to produce various vibration regularities, on-line tuning and the monitoring of amplitude, frequency and waveform are realized, be conducive to continuous casting
Automated condtrol.But it is built, operation and maintenance cost are high, in addition, because the impurity in hydraulic oil blocks servo in work
Valve can cause hydraulic cylinder to occur stopping phenomenon steathily, and bleed-out accident can be caused when serious.
Comparatively speaking, electrodynamic type drive system has the advantages that cost is relatively low, plant maintenance facilitates, pollution-free.It is existing
In technology, electrodynamic type one side non-sine drive system mainly has following several：Such as the square billet electric cylinder of Hengyang Lei Mu companies exploitation
Non-sine drive system, crystallizer vibration platform non-sinusoidal oscillation is directly driven using servo electric jar, servo electric jar by
Servomotor and roller screw are constituted, and are capable of achieving the on-line tuning of crystallizer vibration amplitude, frequency and waveform.But servomotor is frequent just
Reverse turn influences control accuracy, and the carrying of its core driving member roller screw and impact resistance are also difficult to and hydraulic cylinder or song
Handle mechanism compares favourably.
Further, the Chinese patent of Application No. CN201210291325.0, disclosing one kind has servo direct driving motor and partially
The heart axle composition drive device, can by connecting rod drive mold oscillation, the wherein positive and negative swing of servo direct driving motor, pivot angle ±
Change within 90 °, amplitude can be controlled by the size for adjusting pivot angle.But the positive and negative frequent rotation of servomotor in the device, be
The rotary inertia of system is than larger, so its control accuracy, response speed is poor.
For another example, Fang Yiming et al. was in 2014《Chinese journal of scientific instrument》, the phase of volume 35 11, in 2615-2623 texts, disclose one
Plant the waveform generator containing single direction rotation servomotor and double leval jib is oriented to the non-sine drive device of shake table composition, wherein
Servomotor, decelerator and eccentric shaft linkage composition waveform generator, the waveform generator are arranged in double leval jib and are oriented to and shakes
The side of dynamic platform, is hinged with shake table.When servomotor is rotated with the speed for changing, crystallizer vibration platform can realize non-sine
Vibration regularity.The waveform and frequency of the device by Serve Motor Control, can on-line tuning, but have the disadvantage cannot on-line tuning shake
Width, is not suitable with high efficiency continuous casting to vibratory equipment and the demand for development of technique.
For another example, Liu great Wei et al. was in 2013《China Mechanical Engineering》, the phase of volume 24 3, in 327-331 texts, disclose one kind
Waveform generator containing non-circular gear and double leval jib are oriented to the non-sine drive device of shake table composition, wherein variable-frequency motor,
Non-circular gear and eccentric shaft connecting rod composition waveform generator, one side drives double leval jib shake table.In the device, variable-frequency motor is at the uniform velocity
Rotation, by realizing non-sinusoidal oscillation after non-circular gear speed change, due to being not required to the SERVO CONTROL of complexity, the installation cost is minimum,
But in addition to frequency, amplitude and waveform cannot on-line tunings.
In sum, for unilateral non-sine drive device, electrodynamic type has low cost, easy to maintenance, non-environmental-pollution
Deng outstanding advantages, the trend of big substituted fluid pressure type one side drive device.But, it is positive and negative in current electric driving device
Frequently the servomotor operational mode of rotation is poor, and the motor of unidirectional continuous rotation cannot on-line tuning amplitude.
The content of the invention
Present invention aim at providing a kind of electrodynamic type single direction rotation and amplitude, waveform and frequency can on-line tuning company
Casting crystallizer one side non-sine drive device.
The invention mainly comprises waveform generator and crystallizer vibration platform, and crystallizer vibration platform is by vibration frame and fixation
Framework is constituted.The vibration frame for being wherein fixed on crystallizer is connected by leaf spring with fixed frame, and the quantity of leaf spring is many
Yu Sigen, is symmetrically distributed in the left and right sides of shake table, in the vibration midpoint of vibration frame, the extension of all leaf spring center lines
Line is by the center of circle of the imitative arc track of shake table；Wherein waveform generator is by common constant speed motor, and servomotor, two-freedom is poor
Driving wheel system and eccentric shaft composition, constant speed motor and servomotor drive two driving members of differential gear train, differential gear train respectively
Driven member be connected with eccentric shaft；Waveform generator is arranged in the inner or outer side of the imitative arc track of shake table, waveform generator
In eccentric shaft be connected with vibration frame by a connecting rod, connecting rod one end is hinged with eccentric shaft, and the other end and vibration frame cut with scissors
Connect or affixed with vibration frame by leaf spring.
Two-freedom differential gear train can select the 2K-H type trains of cylinder or conical gear composition, wherein sun gear and planet
Frame is movable part.It can be two sun gears that constant speed motor and servomotor drive two driving members of differential gear train,
It can be one sun gear of planet carrier and any of which.
Common constant speed motor can select phase asynchronous ac motor, and servomotor can select alternating-current synchronous servo electricity
Motivation.
It is balance vibration framework and the weight of crystallizer, buffer unit is installed between vibration frame and fixed frame.
The course of work of drive device approximately as：
Constant speed motor is with fixed angular speed single direction rotation, angular speed single direction rotation of the servomotor to change, constant speed electricity
Machine and servomotor are after differential gear train velocity composite so that eccentric shaft is symmetrically swung with variable angular velocity rule on horizontal plane,
So as to drive crystallizer vibration platform of reciprocating vibration with non-sine rule according to the track that leaf spring sets by connecting rod.Adjustment servo electricity
The angular speed rule of machine, can control eccentric shaft pivot angle size, hunting frequency and swing speed, and then reach on-line tuning crystallization
The purpose of device amplitude, frequency and waveform.The angle that wherein the eccentric shaft center of circle is turned over the line of the centre of gyration is pivot angle, and it is most
Big swing angle is no more than 180 °, at maximum pendulum angle, maximum of the corresponding vibration frame amplitude of eccentric shaft not less than crystallizer requirement
Amplitude.
Compared with prior art, the invention has the advantages that：
1st, compared with the unilateral drive device of hydraulic cylinder shock wave, the present invention can not only realize the repertoire of fluid pressure type, and
And the investment of equipment, operation and maintenance cost substantially reduced, and environmental pollution caused by hydraulic oil is avoided in production.
2nd, compared with the unilateral drive device of electric cylinder shock wave, all motor single direction rotations in the present invention, and also it is resonable
Think operation in the range of speeds, the impact resistance of whole equipment, abrasion resistance properties are more superior.
3rd, compared with the unilateral drive device of single direction rotation motor shock wave, the present invention is capable of achieving all vibration parameters and adjusts online
It is whole, more conform to requirement of the high efficiency continuous casting to vibratory process.
Brief description of the drawings
Fig. 1 is main view schematic diagram of the present invention.
Fig. 2 is the corresponding servomotor angular speed curve map of first group of vibration parameters in the present invention.
Fig. 3 is eccentric shaft linkage side-looking simplified schematic diagram in the present invention.
Fig. 4 is the speed curve diagram of the corresponding crystallizer of first group of vibration parameters in the present invention.
Fig. 5 is the displacement curve figure of the corresponding crystallizer of first group of vibration parameters in the present invention.
Fig. 6 is the corresponding servomotor angular speed curve map of second group of vibration parameters in the present invention.
Fig. 7 is the speed curve diagram of the corresponding crystallizer of second group of vibration parameters in the present invention.
Fig. 8 is the displacement curve figure of the corresponding crystallizer of second group of vibration parameters in the present invention.
Drawing reference numeral：1- constant speeds motor, 2- servomotors, 3- drive gears, 4- planet carriers, 5- planetary gears, the big sun of 6-
It is small too that wheel, 7- are oriented to leaf spring, 8- vibration frames, 9- connecting rods, 10- eccentric shafts, 11- two-freedom differential gear trains transmission mechanism, 12-
Sun wheel, 13- fixed frames.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings：
In the continuous cast mold one side non-sine drive device main view schematic diagram shown in Fig. 1, the device mainly includes
Waveform generator and mold oscillation framework two parts.
Waveform generator includes constant speed motor 1, servomotor 2, two-freedom differential gear train transmission mechanism 11 and bias
Axle 10.Constant speed motor 1 is common phase asynchronous ac motor, its rotating speed of full load n1=2930 revs/min, servomotor 2 is
AC permanent-magnet synchronous servo motor, its rated speed is 1500 revs/min.Differential gear train transmission mechanism is by drive gear 3, Sunny
Wheel 12, planet carrier 4, big sun gear 6 and three planetary gears 5 are constituted.Wherein, small sun gear 12 and the external toothing of planetary gear 5, the big sun
Wheel 6 and the internal messing of planetary gear 5, gear external toothing is connected firmly on drive gear 3 and planet carrier 4.Constant speed motor 1 by shaft coupling with
Small sun gear 12 is connected, and servomotor 2 is connected by shaft coupling with drive gear 3, and then planet carrier 4 can be driven to rotate.Constant speed
The angular speed of motor 1 and servomotor 2 by big sun gear 6 by after the synthesis of differential gear train transmission mechanism 11, will be moved and transmitted
To eccentric shaft 10.
Mold oscillation framework 8 is the movable platform for installing crystallizer, and crystallizer is fixed on vibration frame 8, with
One of rise motion.Vibration frame 8 is oriented to leaf spring 7 and is connected with fixed frame 13 by four pieces in this programme, and four blocks of leaf springs symmetrically divide
Cloth can see the two boards spring installed in the same side in the left and right sides of vibration frame 8 from the plan of Fig. 1.Work as vibrating frame
When frame 8 is in the point midway of vibration, the extended line of all leaf spring heart center lines is by the center of circle of the imitative arc track of vibration frame.
Waveform generator is arranged in the outside of mold oscillation camber line, and the eccentric shaft 10 in waveform generator passes through a company
Bar 9 is connected with vibration frame 8, and described connecting rod one end is hinged with eccentric shaft, and the other end of connecting rod 9 is by self-aligning roller bearing and vibration
Framework 8 is hinged.
If the vibration parameters when vibratory process condition according to crystallizer provides efficiently production are：Amplitude h=4mm, shake frequency f
=180min-1, waveform bias slope=0.2, then adjust servomotor rotating speed can reach the vibratory process effect
Preset parameter in drive device：The rotating speed n of constant speed motor 11=2930r/min, big sun gear 6 and small sun gear
12 gear ratio i1=z6/z12=2, the gear ratio i of the gear that is connected on drive gear 3 and planet carrier 42=1, then servomotor
Rotating speed is
In formula, n2--- the rotating speed (r/min) of servomotor, represented by piecewise function, one, crystallizer is corresponded to respectively
The rotating speed of servomotor when downwardly and upwardly being moved in the vibration period；
T --- time parameter (s)；
ta--- in a vibration period, crystallizer moves downward time used, ta=(1- α) T/2, wherein T are knot
The vibration period (s) of brilliant device, T=60/f；
Then according to formula (1), the servomotor speed curves obtained are as shown in Figure 2.
The eccentric throw of eccentric shaft is determined by the peak swing of crystallizer, and for oscillating-type eccentric shaft, its pivot angle β is represented
The hunting range of eccentric shaft, the amplitude with vibration frame 8 is corresponding, as shown in figure 3, eccentric shaft is symmetrically put on horizontal line
Dynamic, the angle that the line of the eccentric shaft center of circle and the centre of gyration is turned over is eccentric shaft pivot angle, and its maximum is 180 °, now corresponding
The peak swing of vibration frame, then the crystallizer peak swing no less than crystallizer that the eccentric throw of eccentric shaft is excited herein
It is required that amplitude.The eccentric throw of eccentric shaft is taken in this programme for 6mm, then the movement relation of connecting rod can obtain mold oscillation framework
8 non-sinusoidal oscillation rate curve, as shown in Figure 4.
The vibration velocity of vibration frame 8 is integrated, corresponding displacement waveform can be obtained, as shown in Figure 5.From Fig. 5
In as can be seen that vibration frame amplitude h=4mm, T=60/f=60/180=0.33s, ta=(1- α) T/2=(1-0.2)
× 0.33/2=0.133s, complies fully with initial given Oscilation Parameters of Mold.
If in production, need to be adjusted to vibration parameters, then in the case where drive system other parameters are constant, change public
Multinomial coefficient in formula (1).For example, vibration parameters are changed into h=5mm, f=160min-1, α=0.25, then servomotor
2 rotating speed is
According to formula (2), the servomotor speed curves obtained are as shown in Figure 6.
Accordingly, rate curve and the displacement curve difference of mold oscillation framework 8 can be obtained as shown in Figure 7 and Figure 8.
As can be seen from Figure 8, the amplitude h=5mm, T=60/f=60/160=0.375s, t of vibration framea=(1- α) T/2=
(1-0.25) × 0.375/2=0.14s, meets the Oscilation Parameters of Mold after change.
So, the oscillating-type one side non-sine drive device proposed in the present invention ensure that all motor single direction rotations
In the case of, by the velocity function for controlling servomotor, you can realize the amplitude of crystallizer, frequency and waveform on-line tuning.
Claims (6)
1. a kind of continuous cast mold one side non-sine drive device, mainly includes waveform generator and crystallizer vibration platform, crystallization
Device shake table is made up of vibration frame and fixed frame, and vibration frame is connected by leaf spring with fixed frame, and the quantity of leaf spring is not
Less than four, the left and right sides of shake table is symmetrically distributed in, in the vibration midpoint of vibration frame, all leaf spring center lines prolong
Line long is by the center of circle of the imitative arc track of shake table, it is characterised in that：The waveform generator is by common constant speed motor, servo electricity
Machine, two-freedom differential gear train and eccentric shaft are constituted, and constant speed motor and servomotor drive two-freedom differential gear train respectively
Two driving members, the driven member of the two-freedom differential gear train is connected with eccentric shaft；The waveform generator is arranged in
The inner or outer side of the imitative arc track of shake table, the eccentric shaft in waveform generator is connected by a connecting rod with shake table, described
Connecting rod one end is hinged with eccentric shaft, and the other end is hinged or affixed with vibration frame by leaf spring with vibration frame；The eccentric shaft center of circle
The angle turned over the line of the centre of gyration is pivot angle, and maximum pendulum angle is corresponding at eccentric shaft maximum pendulum angle no more than 180 °
Peak swing of the crystallizer vibration amplitude not less than crystallizer requirement.
2. continuous cast mold according to claim 1 one side non-sine drive device, it is characterised in that：The two-freedom
Differential gear train is the 2K-H type trains that roller gear or conical gear are constituted.
3. continuous cast mold according to claim 1 and 2 one side non-sine drive device, it is characterised in that：Described two certainly
It is two sun gears by two driving members of degree differential gear train, or one sun gear of planet carrier and any of which.
4. continuous cast mold according to claim 1 one side non-sine drive device, it is characterised in that：The common constant speed
Motor is phase asynchronous ac motor.
5. continuous cast mold according to claim 1 one side non-sine drive device, it is characterised in that：The servomotor
It is AC permasyn servo motor.
6. continuous cast mold according to claim 1 one side non-sine drive device, it is characterised in that：Vibration frame bottom
Buffer unit is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510778702.7A CN105458194B (en) | 2015-11-13 | 2015-11-13 | Continuous cast mold one side non-sine drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510778702.7A CN105458194B (en) | 2015-11-13 | 2015-11-13 | Continuous cast mold one side non-sine drive device |
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| Publication Number | Publication Date |
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| CN105458194A CN105458194A (en) | 2016-04-06 |
| CN105458194B true CN105458194B (en) | 2017-05-31 |
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| CN201510778702.7A Active CN105458194B (en) | 2015-11-13 | 2015-11-13 | Continuous cast mold one side non-sine drive device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110303121B (en) * | 2019-08-13 | 2024-02-27 | 江西金品铜业科技有限公司 | Semi-continuous casting pouring crystallization system for tail gas treatment of copper ingot processing belt |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2420086Y (en) * | 2000-04-30 | 2001-02-21 | 万信群 | Resonant crystallizer |
| CN2582782Y (en) * | 2002-11-28 | 2003-10-29 | 刘联群 | Continuous caster crystallizer vibrator |
| CN1480273A (en) * | 2003-07-31 | 2004-03-10 | 任廷志 | Variable speed gear with nonsinusoidal vibration in continuous casting crystallizer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02268947A (en) * | 1989-04-07 | 1990-11-02 | Nkk Corp | Apparatus for generating oscillation of mold in continuous casting machine |
| JP5935737B2 (en) * | 2013-03-29 | 2016-06-15 | Ｊｆｅスチール株式会社 | Continuous casting method for round billets |
-
2015
- 2015-11-13 CN CN201510778702.7A patent/CN105458194B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2420086Y (en) * | 2000-04-30 | 2001-02-21 | 万信群 | Resonant crystallizer |
| CN2582782Y (en) * | 2002-11-28 | 2003-10-29 | 刘联群 | Continuous caster crystallizer vibrator |
| CN1480273A (en) * | 2003-07-31 | 2004-03-10 | 任廷志 | Variable speed gear with nonsinusoidal vibration in continuous casting crystallizer |
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| CN105458194A (en) | 2016-04-06 |
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Effective date of registration: 20200727 Address after: 430000 No.1-3, 7th floor, hejiadun high tech center building, No.17 jiangfa Road, Jianghan District, Wuhan City, Hubei Province Patentee after: Guide (Wuhan) science and Engineering Co.,Ltd. Address before: Hebei Street West Harbor area, 066004 Hebei city of Qinhuangdao province No. 438 Patentee before: Yanshan University |