CN202570748U - Device for adopting inertial flywheel to inhibit high speed mill from vibration - Google Patents
Device for adopting inertial flywheel to inhibit high speed mill from vibration Download PDFInfo
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- CN202570748U CN202570748U CN 201220185007 CN201220185007U CN202570748U CN 202570748 U CN202570748 U CN 202570748U CN 201220185007 CN201220185007 CN 201220185007 CN 201220185007 U CN201220185007 U CN 201220185007U CN 202570748 U CN202570748 U CN 202570748U
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- belt pulley
- inertial flywheel
- roll
- damping assembly
- flying wheel
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Abstract
The utility model discloses a device for adopting an inertial flywheel to inhibit a high speed mill from vibration. The device comprises a front vibration reduction component, a pressing roll component and a rear vibration reduction component, which are arranged at a steel inlet of a mill in sequence, wherein the pressing roll component is arranged above rolled steel; and the front and the rear vibration reduction components are arranged under the rolled steel. The device for adopting the inertial flywheel to inhibit the high speed mill from vibration, disclosed by the utility model, has a simple mechanical structure, is easy to maintain and repair, and has a good vibration reduction effect.
Description
Technical field
The utility model belongs to rolling antivibration area, relates to a kind of device that adopts inertial flywheel to suppress the fast mill flutter.
Background technology
The presentation quality of rolled steel is to weigh an important indicator of rolled products quality; For some rolled products; Like Automobile Plate, tame electroplax, corrosion resistant plate etc., the quality of the surface quality of steel plays crucial effects to the quality of overall product quality especially.The presentation quality of band steel is the embodiment of enterprise's steel rolling technology level, also is the epitome of product quality, in the production and selling of steel products; The rolled steel presentation quality; Not only can influence the direct economic benefit of enterprise, also can influence the competitiveness of enterprise product, therefore; Current each big steel rolling mill particularly payes attention to the steel presentation quality, constantly adopts an effective measure to improve and improve.
In the high-speed rolling process,, also be the technical barrier of puzzlement iron and steel enterprise in the world wide because the defective of the rolled products surface quality that the flutter of milling train causes like rolled products vibration line, is a ubiquitous problem during the band steel is produced.The vibration line is meant the light and dark striped that the belt steel product surface forms, and the generation of vibration line not only influences the quality of belt steel product, and violent flutter also can cause broken belt or device damage accident, threatens production safety and causes enormous economic loss.Therefore, having problems of vibration line is one of key issue that needs to be resolved hurrily during steel rolling is produced.
At present, many scholars and expert study vibration line problem both at home and abroad: the mechanism that the involving vibrations line produces, the vibration performance of vibration line, the inhibition method of vibration line, the vibration monitoring of milling train and analysis, restraining device of steel flutter or the like.But on the whole, research also at the experimental stage is more, and the real method and apparatus that input is used in actual production is less; The system that is used to monitor and analyze the milling train flutter is more, and the device that directly is used for the steel Flutter Suppression rarely has application.
Theoretical research and experiment show, such as the generation of the surface quality defects such as vibration line of rolled steel, in essence, is that the flutter by fast mill causes.At present, defined the surface quality that two kinds of typical milling train flutters influence the strip material: a kind of is the third octave flutter, causes the fluctuation of tension force between significant change and the frame of rolled piece thickness; Another kind is the 5th octave flutter, causes the chatter mark phenomenon of rolled piece surface perpendicular to rolling direction.The flutter of steel rolling equipment causes the variation of rolled steel exit thickness, causes the fluctuation of rolled steel entrance velocity, thereby causes the fluctuation of roll-force, causes fast mill flutter amplitude to increase, and flutter is more violent, has a strong impact on the quality of rolled steel product.
Therefore, improve the rolled steel surface quality of products, suppress open defects such as vibration line, fundamentally, be the flutter that suppresses fast mill through various apparatus and method.
Summary of the invention
The utility model provides a kind of device that adopts inertial flywheel to suppress the fast mill flutter to the deficiency of prior art.
The technical scheme that the utility model technical solution problem is taked is:
A kind of device that adopts inertial flywheel to suppress the fast mill flutter comprises preposition damping assembly, pushes roll assembly and rearmounted damping assembly; Steel porch at milling equipment is disposed with preposition damping assembly, pushes roll assembly and rearmounted damping assembly, wherein pushes the top that roll assembly is arranged on rolled steel, and preposition damping assembly and rearmounted damping assembly are arranged on the below of rolled steel.
Described preposition damping assembly comprises inertial flywheel, small belt pulley, big belt pulley, driving belt and electromagnetism roller; The electromagnetism roller be arranged on rolled steel under, an end of electromagnetism roller is equipped with big belt pulley, big belt pulley drives small belt pulley through driving belt, described small belt pulley is installed on the inertial flywheel; In the operation of rolling, the horizontal movement of the rolled steel of milling equipment steel porch drives the rotation of electromagnetism roller, and the big belt pulley on the electromagnetism roller drives small belt pulley through driving belt, and then drives the inertial flywheel rotation; Described rearmounted damping assembly is identical with the structure of preposition damping assembly.
The described roll assembly of pushing comprises by pressure roller, two flying wheels and torsion spring; Flying wheel is installed in the two ends by pressure roller through torsion spring, and the quality of two flying wheels, size, shape are identical.
The moment of inertia of described inertial flywheel is greater than the moment of inertia of electromagnetism roller, and the moment of inertia of flying wheel is greater than the moment of inertia of pressing pressure roller.
Described milling equipment comprises backing roll, top working roll, bottom working roll, following backing roll and frame.
The beneficial effect of the utility model: the utility model provides and adopt inertial flywheel to suppress the device of fast mill flutter, the frame for movement of its device is simple, is easy to safeguard and maintenance, and good damping result, its principle and method has feasibility.In the high-speed rolling process, can suppress the fluctuation of rolled piece entrance velocity in real time, and then reach the purpose that suppresses the fast mill flutter, in the production of reality, be with a wide range of applications.
This device can effectively be eliminated the fluctuation of rolled steel entrance velocity in the high-speed rolling process; Thereby reach the purpose that suppresses the fast mill flutter; To improving rolled steel surface quality of products and production efficiency, reduce the roll roll surface wear, played positive effect.
Description of drawings
Fig. 1 suppresses the device front view of fast mill flutter for adopting inertial flywheel;
Fig. 2 suppresses the device vertical view of fast mill flutter for adopting inertial flywheel;
Fig. 3 is the feedback principle block diagram of this device fast mill perpendicular system self-excitation flutter.
Among the figure: 1, first inertial flywheel; 2, first small belt pulley; 3, first driving belt; 4, first belt pulley; 5, the first electromagnetism roller; 6, first flying wheel; 7, press pressure roller; 8, second flying wheel; 9, rolled steel; 10, torsion spring; 11, second inertial flywheel; 12, second small belt pulley; 13, second driving belt; 14, second largest belt pulley; 15, the second electromagnetism roller; 16, frame; 17, go up backing roll; 18, top working roll; 19, bottom working roll; 20, following backing roll.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Adopt inertial flywheel to suppress the device of fast mill flutter, comprise preposition damping assembly, push roll assembly and rearmounted damping assembly.As shown in Figure 1; Steel porch at milling equipment is disposed with preposition damping assembly, pushes roll assembly and rearmounted damping assembly; Wherein push roll assembly and be arranged on the top of rolled steel, preposition damping assembly and rearmounted damping assembly are arranged on the below of rolled steel.
Preposition damping assembly comprises first inertial flywheel 1, first small belt pulley 2, first belt pulley 4, first driving belt 3 and the first electromagnetism roller 5; The first electromagnetism roller 5 be arranged on rolled steel 9 under, an end of the first electromagnetism roller 5 is equipped with first belt pulley 4, first belt 4 is taken turns and is driven first small belt pulley, 2, the first small belt pulleys 2 through first driving belt 3 and be installed on first inertial flywheel 1; In the operation of rolling; The horizontal movement of the rolled steel 9 of milling equipment steel porch drives the rotation of the first electromagnetism roller 5; First belt 4 on the first electromagnetism roller 5 is taken turns through first driving belt 3 and is driven first small belt pulley 3, and then drives 1 rotation of first inertial flywheel.Can suppress in the high-speed rolling process to cause the flutter of milling train like this because of the fluctuation of rolled steel entrance velocity.
As shown in Figure 2, rearmounted damping assembly is identical with the structure of preposition damping assembly, also comprises second inertial flywheel 11, second small belt pulley 12, second largest belt pulley 14, can further suppress the flutter of the milling train that the fluctuation because of the rolled steel entrance velocity causes.
As depicted in figs. 1 and 2, push roll assembly and comprise by pressure roller 7, first flying wheel 6, second flying wheel 8 and torsion spring 10; First flying wheel 6 and second flying wheel 8 are installed in the two ends by pressure roller 7 through torsion spring 10, and quality, size, the shape of first flying wheel 6 and second flying wheel 8 are identical.
As shown in Figure 1, the moment of inertia of first inertial flywheel 1 and second inertial flywheel 11 is greater than the moment of inertia of the first electromagnetism roller 5 and the second electromagnetism roller 15; The moment of inertia of first flying wheel 6 and second flying wheel 8 is greater than the moment of inertia of pressing pressure roller 7.First inertial flywheel 1, second inertial flywheel 11 and first flying wheel 6, second flying wheel 8 have increased the resonant frequency of the dynamic response of whole system on the one hand, through changing the inertia of inertial flywheel and flying wheel, can adjust the resonant frequency of milling train flutter; On the other hand, can eliminate the fluctuation of rolled steel entrance velocity, thus the flutter of the milling train that the fluctuation of inhibition rolled steel entrance velocity causes.
As shown in Figure 1; The horizontal movement of rolled steel 9 causes the rotation of the first electromagnetism roller 5 and the second electromagnetism roller 15, produces electromagnetic force after the first electromagnetism roller 5 and the second electromagnetism roller, 15 energized; Thereby rolled steel 9 is applied electromagnetic attraction; Increased the contact force between electromagnetism roller and the rolled steel, promptly the frictional force between electromagnetism roller and the rolled steel 9 increases thereupon, makes the rotation speed change of electromagnetism roller can accurately react the variation of rolled steel 9 entrance velocities.
As shown in Figure 1, first driving belt 3 and first driving belt 13 have the effect of buffering, absorbing.Milling equipment comprises frame 16, last backing roll 17, top working roll 18, bottom working roll 19, following backing roll 20.
Below will specify the principle and method
that adopts inertial flywheel to suppress the device of fast mill flutter.
In the high-speed rolling process, under multifactor coupling, flutter can take place in milling train.Two working rolls that make milling train of fast mill flutter produce vibration displacement Y, that is:
Working roll vibration displacement:
The variation of working roll vibration displacement causes rolled piece exit thickness y
2Variation, promptly
Rolled piece exit thickness:
By in the rolling roll gap arbitrary moment metal mass flow equate that formula is then arranged:
Wherein
is the metal flow of moment in the roll gap; Preceding sliding rate is constant, and promptly
remains unchanged.
Can know by following formula; The variation of rolled piece exit thickness
has caused the fluctuation of rolled piece entrance velocity
, i.e. rolled piece entrance velocity:
Wherein, The whole rolling system; The anti-roll speed of unreeling machine keeps constant, and promptly
remains unchanged.Following formula shows that the rolled piece entrance velocity has increased
.
The fluctuation of rolled piece entrance velocity causes the length of milling train entrance side band steel to change, i.e. entrance side band steel length variations amount:
The length of entrance side band steel changes and causes the variation of rolled piece inlet tension force, i.e. the variable quantity of rolled piece inlet tension force:
According to classical roll-force computation model, the fluctuation of rolled piece inlet tension force directly causes the fluctuation of roll-force, i.e. the undulate quantity of the roll-force that causes of rolled piece inlet tension force:
Wherein,
expression stress state coefficient; B representes the rolled piece width;
expression absolute draft amount;
expression roll flattening radius.
The fluctuation of roll-force directly causes the flutter of milling train and the variation of rolled piece exit thickness, thereby causes the bigger fluctuation of rolled piece entrance velocity, finally causes the violent flutter of milling train.
In sum, the principle and method that adopts inertial flywheel to suppress the device of fast mill flutter can be summed up as the feedback principle block diagram of fast mill perpendicular system self-excitation flutter shown in Figure 3.
Feedback principle based on above fast mill perpendicular system self-excitation flutter; The utility model is started with from the fluctuation of control or elimination rolled piece entrance velocity; Through the inertial flywheel device, thereby the undulate quantity of rolled piece entrance velocity is suppressed to the minimum purpose that suppresses the fast mill flutter that reaches.
Claims (1)
1. a device that adopts inertial flywheel to suppress the fast mill flutter is characterized in that: comprise preposition damping assembly, push roll assembly and rearmounted damping assembly; Steel porch at milling equipment is disposed with preposition damping assembly, pushes roll assembly and rearmounted damping assembly, wherein pushes the top that roll assembly is arranged on rolled steel, and preposition damping assembly and rearmounted damping assembly are arranged on the below of rolled steel;
Described preposition damping assembly comprises inertial flywheel, small belt pulley, big belt pulley, driving belt and electromagnetism roller; The electromagnetism roller be arranged on rolled steel under, an end of electromagnetism roller is equipped with big belt pulley, big belt pulley drives small belt pulley through driving belt, described small belt pulley is installed on the inertial flywheel; In the operation of rolling, the horizontal movement of the rolled steel of milling equipment steel porch drives the rotation of electromagnetism roller, and the big belt pulley on the electromagnetism roller drives small belt pulley through driving belt, and then drives the inertial flywheel rotation; Described rearmounted damping assembly is identical with the structure of preposition damping assembly;
The described roll assembly of pushing comprises by pressure roller, first flying wheel, second flying wheel and torsion spring; First flying wheel and second flying wheel are installed in the two ends by pressure roller through torsion spring, and quality, size, the shape of first flying wheel and second flying wheel are identical;
The moment of inertia of described inertial flywheel is greater than the moment of inertia of electromagnetism roller, and the moment of inertia of flying wheel is greater than the moment of inertia of pressing pressure roller;
Described milling equipment comprises backing roll, top working roll, bottom working roll, following backing roll and frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220185007 CN202570748U (en) | 2012-04-27 | 2012-04-27 | Device for adopting inertial flywheel to inhibit high speed mill from vibration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220185007 CN202570748U (en) | 2012-04-27 | 2012-04-27 | Device for adopting inertial flywheel to inhibit high speed mill from vibration |
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| CN202570748U true CN202570748U (en) | 2012-12-05 |
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| CN 201220185007 Expired - Lifetime CN202570748U (en) | 2012-04-27 | 2012-04-27 | Device for adopting inertial flywheel to inhibit high speed mill from vibration |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632079A (en) * | 2012-04-27 | 2012-08-15 | 杭州电子科技大学 | Device for restraining vibration of high-speed mill by using inertia flywheel |
| CN115522043A (en) * | 2022-09-19 | 2022-12-27 | 宁波中科毕普拉斯新材料科技有限公司 | Amorphous nanocrystalline magnetic core heat treatment device with constant magnetic conductivity and magnetic core preparation method |
-
2012
- 2012-04-27 CN CN 201220185007 patent/CN202570748U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632079A (en) * | 2012-04-27 | 2012-08-15 | 杭州电子科技大学 | Device for restraining vibration of high-speed mill by using inertia flywheel |
| CN102632079B (en) * | 2012-04-27 | 2014-08-13 | 杭州电子科技大学 | Device for restraining vibration of high-speed mill by using inertia flywheel |
| CN115522043A (en) * | 2022-09-19 | 2022-12-27 | 宁波中科毕普拉斯新材料科技有限公司 | Amorphous nanocrystalline magnetic core heat treatment device with constant magnetic conductivity and magnetic core preparation method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121205 Effective date of abandoning: 20140813 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20121205 Effective date of abandoning: 20140813 |
|
| RGAV | Abandon patent right to avoid regrant |