CN103121037A

CN103121037A - Device for suppressing vibration of rolling mill

Info

Publication number: CN103121037A
Application number: CN2013100721570A
Authority: CN
Inventors: 闫晓强
Original assignee: University of Science and Technology Beijing USTB
Current assignee: University of Science and Technology Beijing USTB
Priority date: 2013-03-07
Filing date: 2013-03-07
Publication date: 2013-05-29
Anticipated expiration: 2033-03-07
Also published as: CN103121037B

Abstract

The invention belongs to the field of signal detection and automation control of rolling mills, and relates to a device for suppressing vibration of a rolling mill. The device for suppressing the vibration of the rolling mill is characterized by comprising a rolling mill vibration signal source, a vibration suppression signal generator, a vibration suppression actuating unit and the rolling mill, wherein the rolling mill vibration signal source is composed of rolling mill torsion vibration signals, rolling speed signals, rolling mill vertical vibration signals and rolling pressure signals, the vibration suppression signal generator is composed of a signal input module, a filter processing module, a phase recognition module, a vibration suppression signal module and a signal output module, and the vibration suppression actuating unit is composed of a main drive speed setter and a hydraulic roll gap setter. The device for suppressing the vibration of the rolling mill has the advantages that vibration suppression damping signals are generated by the vibration suppression signal generator according to the rolling mill vibration signal source and sent to the main drive speed setter and the hydraulic roll gap setter of the vibration suppression actuating unit so as to participate in control of the rolling mill to reduce the vibration energy of the rolling mill, so that the rolling mill can be prevented from vibrating severely, chatter marks on a roller and the surfaces of strips are eliminated, and therefore the surface quality of products is improved, and the on-line service life of the roller is prolonged.

Description

A kind of rolling mill vibration vibration-repressing device

Technical field

The present invention relates to milling train signal detection and automation control area, particularly a kind of rolling mill vibration vibration-repressing device.

Background technology

Since half a century, most of milling trains are frequent when rolling thin specification or the larger band of resistance of deformation in worldwide strong " ghost mode " oscillation phenomenon occurs, cause forming oscillation mark on band and roll, reduced surface quality of strips and roll online service life, even cause the accidents such as equipment, the safe operation of serious threat milling train.Many scholars and expert have carried out a large amount of research to the rolling mill vibration problem, have obtained some achievements, never find general device but suppress rolling mill vibration.When vibration occurs, be forced to the interim measures such as reduction of speed, change lubricating status or roll change and improve the rolling mill vibration state in actual production, had a strong impact on production output and economic benefit.Trace it to its cause, not only because very complicated, the Hydraulic Roll Gap Control System of milling train frame for movement and Main Drive Control System function are various, but also because technological parameter in the operation of rolling is numerous, the various parameters weave in that intercouples makes milling train present the polymorphic coupled vibrations phenomenon of mechanical electronic hydraulic circle.Even same rolling mill also exists multiple vibration mode simultaneously in the operation of rolling, become the technical barrier that solution is urgently needed in rolling field in worldwide badly.

In recent years, make the rolling mill vibration Study on Problems enter into new epoch due to the development of milling train signal detection technique and the perfect in shape and function of dynamics simulation software.On-the-spot test through to 8 cover rolling mill vibrations have captured rolling mill vibration and have had mechanical electronic hydraulic circle coupled vibrations phenomenon, and namely the machinery of milling train, electric, hydraulic pressure and technique Dynamic Coupling cause rolling mill vibration, and have obtained checking by computer simulation.Therefore, a series of harm that bring in order to suppress rolling mill vibration are in the urgent need to the fexible unit of invention inhibition rolling mill vibration.

Summary of the invention

The mechanical electronic hydraulic circle Coupled vibration problem that exists in order to solve the outer thousands of cover milling train groups of Present Domestic, the present invention proposes a kind of rolling mill vibration restraining device, its basic principle is: but at first the signal of rolling mill vibration signal source is delivered to the signal generator that shakes, but the signal generator that shakes produces the antihunt signal that suppresses rolling mill vibration, but at last antihunt signal is delivered to the performance element that shakes and participated in controlling the energy that reduces rolling mill vibration, the judder that occurs to eliminate milling train, avoid producing oscillation mark on roll and band, improve surface quality of strips and roll online service life.

The technical solution adopted in the present invention is:

A kind of rolling mill vibration vibration-repressing device, but but mainly formed by rolling mill vibration signal source shake performance element and the milling train of signal generator that shake.

The rolling mill vibration signal source is made of hang down shake signal and draught pressure signal of torsional vibration of rolling mill signal, mill speed signal, milling train; But but the signal generator that shakes is made of shake signaling module and signal output module of signal input module, filtering processing module, phase identification module; But the performance element that shakes is by the main transmission speed preset on milling train and Hydraulic Roll Gap is given consists of.

The torsional vibration of rolling mill signal is to be made of torsional vibration signals radiating portion and torsional vibration signals receiving unit, the torsional vibration signals radiating portion is made of the torsional oscillation sensor and emitter, the transmitting antenna that are welded on the main driving motor axle, and the torsional vibration signals receiving unit is made of reception antenna and main control unit.

The torsional oscillation sensor is connected with emitter, emitter is connected with transmitting antenna, transmitting antenna is connected by wireless data with reception antenna, reception antenna is connected with main control unit, main control unit is connected with the rolling mill vibration signal source, but the rolling mill vibration signal source is connected with the signal generator that shakes, but signaling module is connected with signal output module and is connected but the signal input module in the signal generator that shakes, filtering processing module, phase place recognition module are shaken; Signal output module is connected the unit with main transmission speed preset unit respectively and is connected with Hydraulic Roll Gap.

Basic functional principle is: torsional vibration of rolling mill signal, mill speed signal, the milling train vertical shake signal and the draught pressure signal that at first pick up the rolling mill vibration signal source; But then deliver in the signal generator that shakes, but process through shake signaling module and signal output module of signal input module, filtering processing module, phase identification module the antihunt signal that obtains to suppress rolling mill vibration; But main transmission speed preset and given participation of Hydraulic Roll Gap at last antihunt signal delivered to respectively in the performance element that shakes are controlled, eliminate the judder that milling train occurs, avoid producing oscillation mark on roll and band, improve surface quality of strips and roll online service life.

Compared with prior art, characteristics of the present invention are: according to the rolling mill vibration signal source, but but but producing by the signal generator that shakes the antihunt signal of shaking delivers to main transmission speed preset and the given middle participation milling train of Hydraulic Roll Gap of the performance element that shakes and controls to reduce the energy of rolling mill vibration, thus reach the purpose that suppresses rolling mill vibration.

Description of drawings

The present invention will be further described in detail below in conjunction with accompanying drawing.

Fig. 1 forms four unit block diagrams of the present invention;

Fig. 2 is three concrete block diagrams in unit of control signal of the present invention;

Fig. 3 is chief component block diagram of the present invention.

Concrete Reference numeral is: but but rolling mill vibration signal source 1 is shaken shake performance element 3, torsional vibration signals radiating portion 4, torsional vibration signals receiving unit 5, torsional oscillation sensor 6, emitter 7, transmitting antenna 8, reception antenna 9, main control unit 10, main driving motor axle 11, milling train 12, memorial archway 13, hydraulic cylinder 14, working roll 15, backing roll 16, band 17 of signal generator 2.

The specific embodiment

As shown in Figure 1, but but rolling mill vibration vibration-repressing device structure of the present invention is comprised of rolling mill vibration signal source 1 shake performance element 3 and the milling train 12 of signal generator 2 that shake.

When the milling train vibration-generating, but but the signal leading of rolling mill vibration signal source 1 is produced the antihunt signal of shaking in the signal generator 2 that shakes, but complete by the performance element 3 that shakes the vibration that suppresses milling train 12.

As shown in Figure 2, principle of the present invention is when milling train during at rolling thin specification or the larger band of resistance of deformation, and strong oscillation phenomenon appears in milling train.At first pick up torsional vibration of rolling mill signal, mill speed signal, milling train vertical shake signal and draught pressure signal in rolling mill vibration signal source 1 this moment, wherein the torsional vibration of rolling mill signal is made of torsional vibration signals radiating portion 4 and torsional vibration signals receiving unit 5, torsional vibration signals radiating portion 4 is made of torsional oscillation sensor, emitter and transmitting antenna, and torsional vibration signals receiving unit 5 is made of reception antenna and main control unit; Then deliver to rolling mill vibration signal source 1, but then enter in the signal generator 2 that shakes, but process through shake signaling module and signal output module of signal input module, filtering processing module, phase identification module the antihunt signal that obtains to suppress rolling mill vibration; But main transmission speed preset and the given milling train that participates in of Hydraulic Roll Gap at last antihunt signal delivered to respectively in the performance element 3 that shakes are controlled, eliminate the judder that milling train occurs, avoid producing oscillation mark on roll and band, improve surface quality of strips and roll online service life.

As shown in Figure 3, embodiment of the present invention by rolling mill vibration signal source 1(wherein the torsional vibration of rolling mill signal formed by torsional oscillation radiating portion 4 and torsional oscillation receiving unit 5) but performance element 3 and milling train 12 form but the signal generator 2 that shakes shakes.

Rolling mill vibration signal source 1 is made of hang down shake signal and draught pressure signal of torsional vibration of rolling mill signal, mill speed signal, milling train, wherein the torsional vibration of rolling mill signal is made of torsional vibration signals radiating portion 4 and torsional vibration signals receiving unit 5, torsional vibration signals radiating portion 4 is made of the torsional oscillation sensor 6 and emitter 7, the transmitting antenna 8 that are welded on main driving motor axle 11, and torsional vibration signals receiving unit 5 is made of reception antenna 9 and main control unit 10; But but the signal generator 2 that shakes is made of shake signaling module and signal output module of signal input module, filtering processing module, phase identification module; But the performance element 3 that shakes is by the main transmission speed preset and Hydraulic Roll Gap is given consists of; Milling train 12 is made of memorial archway 13, hydraulic cylinder 14, working roll 15, backing roll 16 and band 17.

When the thin specification of mill milling or the larger band 17 of resistance of deformation, milling train 12 produces strong hanging down and shakes and main driving motor output shaft 11 produces strong torsional oscillations, torsional vibration of rolling mill signal, mill speed signal, milling train in rolling mill vibration signal source 1 is hung down shake signal and draught pressure signal vibration also to occur; But these vibration signals are delivered to the signal generator 2 that shakes, but but obtain to shake antihunt signal through shake signaling module and signal output module of signal input module, filtering processing module, phase identification module, but main transmission speed preset and the given milling train that participates in of Hydraulic Roll Gap antihunt signal delivered in the performance element 3 that shakes are controlled again, the judder that occurs to suppress milling train, eliminate the chatter mark of roll and strip surface, improve product surface quality and roll online service life, solve a technical barrier that has worldwide perplexed rolling field since half a century.

Claims

1. rolling mill vibration vibration-repressing device, it is characterized in that by rolling mill vibration signal source (1) but the signal generator that shakes (2) but the performance element that shakes (3) and milling train (12) form;

Rolling mill vibration signal source (1) is made of hang down shake signal and draught pressure signal of torsional vibration of rolling mill signal, mill speed signal, milling train; But the signal generator that shakes (2) but consisted of by shake signaling module and signal output module of signal input module, filtering processing module, phase identification module; But the performance element that shakes (3) is by the main transmission speed preset on milling train (12) and the given formation of Hydraulic Roll Gap.

2. a kind of rolling mill vibration vibration-repressing device according to claim 1, it is characterized in that the torsional vibration of rolling mill signal is to be made of torsional vibration signals radiating portion (4) and torsional vibration signals receiving unit (5), torsional vibration signals radiating portion (4) is made of the torsional oscillation sensor (6) and emitter (7), the transmitting antenna (8) that are welded on main driving motor axle (11), and torsional vibration signals receiving unit (5) is made of reception antenna (9) and main control unit (10).

3. a kind of rolling mill vibration vibration-repressing device according to claim 1, is characterized in that milling train (12) is made of memorial archway (13), hydraulic cylinder (14), working roll (15), backing roll (16) and band (17).