CN202893818U - Device for restraining vibration of high-speed rolling mill by reducing speed fluctuation of rolling inlet of aluminum foil - Google Patents
Device for restraining vibration of high-speed rolling mill by reducing speed fluctuation of rolling inlet of aluminum foil Download PDFInfo
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- CN202893818U CN202893818U CN 201220611345 CN201220611345U CN202893818U CN 202893818 U CN202893818 U CN 202893818U CN 201220611345 CN201220611345 CN 201220611345 CN 201220611345 U CN201220611345 U CN 201220611345U CN 202893818 U CN202893818 U CN 202893818U
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Abstract
The utility model discloses a device for restraining the vibration of a high-speed rolling mill by reducing the speed fluctuation of a rolling inlet of an aluminum foil. A machine frame is arranged at the front end of the mill equipment and at the position of the rolling inlet of the aluminum foil. Two guide rollers and a tensioning roller are arranged in the machine frame, wherein the two guide rollers are installed on the upper portion of the machine frame, the tensioning roller is installed on the lower portion of the machine frame and between the two guide rollers, a small gear is installed at the position of a roll neck at one end of each guide roller, a big gear is installed at the position of a shaft neck of a flywheel, the flywheel is installed in a flywheel installation groove in the outer side of the machine frame, and the small gear on each guide roller and the big gear on the flywheel are matched in a gear engaging mode. The device for restraining the vibration of the high-speed rolling mill by reducing the speed fluctuation of the rolling inlet of the aluminum foil has the advantages of being simple in mechanism structure and easy to maintain and repair, and has a good effect of restraining the speed fluctuation of the rolling inlet of the aluminum foil.
Description
Technical field
The utility model belongs to rolling antivibration area, relates to a kind of device that the fluctuation of aluminum foil rolling entrance velocity suppresses the fast mill flutter that reduces.
Background technology
In the high-speed rolling process, because the defective of the rolling aluminium foil product surface quality that the flutter of milling train causes such as rolled products vibration line, is ubiquitous problem during rolling aluminium foil is produced, also be the technical barrier of the rolling industry of puzzlement in the world wide.The vibration line refers to the light and dark striped that forms with milling material surface, and the generation of vibration line is the quality of influence of rolled product not only, and the violent flutter of milling train also can cause broken belt or device damage accident, threatens production safety also to cause huge economic loss.
At present, many scholars and expert are studied 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 rolled strip flutter etc.But on the whole, also research 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 for monitoring and analysis Mill chattering is more, and the device that is directly used in the fast mill Flutter Suppression rarely has application.
Theoretical research and experiment show, such as the generation of the surface quality defects such as vibration line of rolling aluminium foil, in essence, is that the flutter by fast mill causes.At present, defined the surface quality that two kinds of typical Mill chatterings affect Strip: a kind of is the third octave flutter, causes the fluctuation of tension force between the significant change of rolled piece thickness and the frame; Another kind is the Fifth Octave flutter, causes the rolled piece Surface Vertical in the chatter mark phenomenon of rolling direction.The fluctuation of the rolling entrance velocity of fast mill causes the fluctuation of roll-force, causes the flutter of fast mill, has a strong impact on the quality of rolled steel product.
Therefore, improve the surface quality of rolled steel product, suppress the open defects such as vibration line, fundamentally, be the flutter that suppresses fast mill by various apparatus and method.
Summary of the invention
The utility model provides a kind of device that the fluctuation of aluminum foil rolling entrance velocity suppresses the fast mill flutter that reduces for the deficiencies in the prior art.
The technical scheme that the utility model technical solution problem is taked is:
The utility model comprises frame, leads a roller, idler roller, flywheel, gear wheel and pinion.
At the milling equipment front end, the rolling porch of aluminium foil is provided with frame, is provided with two in the frame and leads a roller and an idler roller, wherein leads the top that a roller is installed in frame for two, and idler roller is installed in the bottom of frame, and idler roller is installed on two and leads in the middle of the roller.
Pinion is installed in an end roll neck place that leads a roller, and gear wheel is installed on the axle journal of flywheel; Flywheel is installed in the flywheel mounting groove on the frame outside, and pinion and the gear wheel on the flywheel of leading on the roller are the fit systems of gear engagement.
The beneficial effects of the utility model: the device that reduces the flutter of aluminum foil rolling entrance velocity fluctuation inhibition fast mill that the utility model proposes, the frame for movement of its device is simple, be easy to maintenance, suppress the effective of aluminum foil rolling entrance velocity fluctuation, its Principle Method has feasibility.
In the high-speed rolling process, can reduce in real time the fluctuation of aluminum foil rolling entrance velocity, thereby reach the purpose that suppresses the fast mill flutter, improve surface quality and the production efficiency of rolling aluminium foil products, reduce the wearing and tearing of roll surface, in the production of reality, be with a wide range of applications.
Description of drawings
Fig. 1 is the overall schematic of the utility model device;
Fig. 2 be the utility model device partly cut open three-dimensional view;
Fig. 3 is the side view of the utility model device;
Fig. 4 is the theory of mechanics structure chart of the utility model device;
Fig. 5 is the structure chart of leading a roller;
Fig. 6 is the structure chart of flywheel;
Fig. 7 is theoretical foundation of the present utility model and principle feedback diagram.
Among the figure: 1, frame; 2, aluminium foil; 3, flywheel; 4, lead a roller; 5, idler roller; 6, rolling-mill housing; 7, upper backup roll; 8, top working roll; 9, bottom working roll; 10, lower backing roll; 11, gear wheel; 12, pinion; 13, flywheel mounting groove.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, reduce the device that aluminum foil rolling entrance velocity fluctuation suppresses the fast mill flutter, its structure comprises: frame 1, lead a roller 4, idler roller 5, flywheel 3, gear wheel 11, pinion 12 and milling equipment.As shown in Figure 2, at the milling equipment front end, the frame 1 of the rolling porch setting device of aluminium foil 2, its sprocket bit roller 4 is installed in the upper part of frame 1, and idler roller 5 is installed in the lower part of frame 1, and idler roller 5 is installed on two and leads in the middle of the roller 4; Pinion 12 is installed in the left end roll neck place that leads a roller 4, on the axle journal of gear wheel 11 Flywheels 3; In the flywheel mounting groove 13 on flywheel 3 installation frames, pinion 12 and the gear wheel 11 on the flywheel 3 of leading on the roller 4 are the kinds of drive of gear engagement.
As shown in Figure 3, be processed with the flywheel mounting groove in the left side of frame.
As shown in Figure 4 and Figure 5, lead a roller 4 one and have two, two structures of leading a roller are identical, at the left end roll neck place that leads a roller, pinion 12 are installed; 5 pairs of rolling aluminium foils 2 of described idler roller have the effect of supporting tensioning.
As shown in Figure 6, gear wheel 12 is installed at the axle journal place of flywheel 3, and flywheel 3 has a large the moment of inertia.
As shown in Figure 2, milling equipment comprises rolling-mill housing 6, upper backup roll 7, top working roll 8, bottom working roll 9 and lower backing roll 10.
As shown in Figure 4, in the operation of rolling of aluminium foil 2, rolling porch at the rolling aluminium foil 2 of milling equipment, the horizontal movement of aluminium foil 2 is through the support tensioning of idler roller, drive two and lead the rotation of a roller 4, the pinion 12 of leading on the roller 4 drives gear wheel 11 on the flywheel 3 by the meshed transmission gear mode, thereby driving flywheel 3 rotates, flywheel 3 has a larger the moment of inertia, therefore the utility model can make the rolling entrance velocity of aluminium foil more stable, play the effect that reduces the fluctuation of aluminum foil rolling entrance velocity in the operation of rolling, and then reached the purpose that suppresses the fast mill flutter.
As shown in Figure 7, below will specify theoretical foundation and the principle of the device that reduces the flutter of aluminum foil rolling entrance velocity fluctuation inhibition fast mill:
In the high-speed rolling of aluminium foil, the fluctuation of the rolling entrance velocity of aluminium foil causes the length of inlet of rolling mill side aluminium foil to change, i.e. entrance side aluminium foil length variations amount:
Entrance side aluminium foil length variations amount
Cause the fluctuation of rolled piece entrance tension force, i.e. the variable quantity of aluminium foil entrance tension force:
According to classical roll-force computation model, the fluctuation of aluminium foil entrance tension force directly causes the fluctuation of roll-force, i.e. aluminium foil entrance tension variation amount
The undulate quantity of the roll-force that causes:
Wherein,
Expression stress state coefficient is calculated by the Hill formula; B represents the aluminium foil width;
Expression absolute draft amount;
Expression roll flattening radius is determined by the Hitchcock formula, that is:
, in the formula: R-working roll radius, P-roll-force,
-Hitchcock constant,
, E1 is elastic modelling quantity,
Be the working roll Poisson's ratio.
The fluctuation of roll-force directly causes the flutter of fast mill and the variation of aluminium foil exit thickness; The flutter of fast mill directly causes the fluctuation of rolling entrance velocity on the one hand; On the other hand, the flutter meeting of fast mill causes the variation of aluminium foil exit thickness indirectly, and the variation of aluminium foil exit thickness directly causes the fluctuation of aluminium foil entrance velocity.
Its relation is as follows: the flutter of fast mill makes two working rolls of milling train produce vibration displacement Y, the working roll vibration displacement:
The variation of working roll vibration displacement causes aluminium foil exit thickness y
2Variation, i.e. aluminium foil exit thickness:
In the following formula,
Represent mean value, by in the rolling roll gap arbitrary moment metal mass flow equate that formula is then arranged:
Wherein,
Metal flow for moment in the roll gap; Front sliding rate is constant, namely
Remain unchanged.
By following formula as can be known, aluminium foil exit thickness
Variation caused again the aluminium foil entrance velocity
Fluctuation, i.e. rolled piece entrance velocity:
Wherein, the speed that unreels of unreeling machine keeps constant
Remain unchanged.
Following formula shows, the entrance velocity of aluminium foil has increased
The utility model is started with from the fluctuation that reduces or eliminate the aluminum foil rolling entrance velocity, by above mechanical device, the undulate quantity of the rolling entrance velocity of aluminium foil is reduced to minimum, thereby reach the purpose that suppresses the fast mill flutter.
Claims (1)
1. one kind reduces the device that the fluctuation of aluminum foil rolling entrance velocity suppresses the fast mill flutter, comprises frame, leads a roller, idler roller, flywheel, gear wheel and pinion, it is characterized in that:
At the milling equipment front end, the rolling porch of aluminium foil is provided with frame, is provided with two in the frame and leads a roller and an idler roller, wherein leads the top that a roller is installed in frame for two, and idler roller is installed in the bottom of frame, and idler roller is installed on two and leads in the middle of the roller;
Pinion is installed in an end roll neck place that leads a roller, and gear wheel is installed on the axle journal of flywheel; Flywheel is installed in the flywheel mounting groove on the frame outside, and pinion and the gear wheel on the flywheel of leading on the roller are the fit systems of gear engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220611345 CN202893818U (en) | 2012-11-19 | 2012-11-19 | Device for restraining vibration of high-speed rolling mill by reducing speed fluctuation of rolling inlet of aluminum foil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220611345 CN202893818U (en) | 2012-11-19 | 2012-11-19 | Device for restraining vibration of high-speed rolling mill by reducing speed fluctuation of rolling inlet of aluminum foil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202893818U true CN202893818U (en) | 2013-04-24 |
Family
ID=48114538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220611345 Withdrawn - After Issue CN202893818U (en) | 2012-11-19 | 2012-11-19 | Device for restraining vibration of high-speed rolling mill by reducing speed fluctuation of rolling inlet of aluminum foil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202893818U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921735A (en) * | 2012-11-19 | 2013-02-13 | 杭州电子科技大学 | Device for restraining vibration of high-speed rolling mill by reducing speed fluctuation of rolling inlet of aluminum foil |
-
2012
- 2012-11-19 CN CN 201220611345 patent/CN202893818U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921735A (en) * | 2012-11-19 | 2013-02-13 | 杭州电子科技大学 | Device for restraining vibration of high-speed rolling mill by reducing speed fluctuation of rolling inlet of aluminum foil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130424 Effective date of abandoning: 20150211 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130424 Effective date of abandoning: 20150211 |
|
| RGAV | Abandon patent right to avoid regrant |