CN2649201Y

CN2649201Y - Apparatus for inhibiting band steel vibration

Info

Publication number: CN2649201Y
Application number: CN 200320109335
Authority: CN
Inventors: 陈培林; 王泽济; 王晨
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2003-10-29
Filing date: 2003-10-29
Publication date: 2004-10-20
Anticipated expiration: 2013-10-29

Abstract

The utility model relates to a strip steel vibration inhibition device which includes coil and a displacement sensor. The displacement sensor in turn is connected with a conditioner and a rectifier controller via circuit. The output terminal of the rectifier controller is connected with the coil via circuit. The coil and the displacement sensor are arranged at the vicinity of the strip steel and keep non-contact. The utility model inhibits the strip steel from vibrating by generating electromagnetic force, which avoids the damage to the surface of the strip steel of adopting direct contact way inhibition and satisfies the requirements of users to the quality of the surface of the strip steel.

Description

The device of inhibition zone steel vibration

Technical field

The utility model relates to a kind of device of inhibition zone steel vibration.

Background technology

In band steel production process, the vibration of band steel can cause being with steel to produce many blemish, such as band steel vibration line, hot dip galvanizing coating uneven thickness etc.As shown in Figure 1, band steel 1 ' forms a string between two rollers 21 ', 22 '.In the prior art, the conventional method that addresses the above problem is to go up at band steel 1 ' to settle one to stablize roller 3 '.Though stablize the roller 3 ' vibration of inhibition zone steel 1 ' effectively,, adopt and stablize the surface quality reduction that roller 3 ' can make band steel 1 ' in the exigent occasion of strip surface quality; And when band steel 1 ' surface plating (being coated with) layer does not also solidify (such as, just left the band steel of zinc pan gas cutter), stablize roller 3 ' and can destroy plating (being coated with) layer.

Summary of the invention

The purpose of this utility model is to provide a kind of device of inhibition zone steel vibration, and it comes the vibration of inhibition zone steel by producing electromagnetic force, but has avoided adopting the direct way of contact to shake to the damage of belt steel surface, satisfies the requirement of user to strip surface quality.

For achieving the above object, the device of the inhibition zone steel vibration that the utility model provides, it comprises coil, a displacement transducer; This displacement transducer circuit successively connects a conditioner, a commutation controller; And the circuit of output terminal of this commutation controller connects this coil; This coil, this displacement transducer are placed near the approaching band steel and keep noncontact.

The centre frequency of the filtering bandwidth of described conditioner is set at the original frequency that the band string wire shakes.

Displacement transducer is in detected state all the time, does not pass if detect the band steel, and coil does not produce magnetic field; When displacement transducer detects the band steel when passing, signal to conditioner; Conditioner carries out processing such as filtering and obtains with the steel amplitude of this moment to this signal, and amplitude is converted into the distance of coil and band steel, and this distance is given commutation controller in real time by conditioner; Commutation controller is accepted two signals: the one, and production line work order, the 2nd, coil and the distance of being with steel.In case receive the production line work order, commutation controller produces a certain size exciting current according to the coil and the distance of band steel, and it is supplied with coil; Coil electricity produces the magnetic field of respective strengths; The band steel is subjected to the magnetic field force effect in magnetic field, its size is relevant with magnetic field intensity, and direction is pointed to coil (suction); When strip tension one timing, just there are an equalization point in it and magnetic force, are with this moment steel to keep noncontact stable at stress point, have so just suppressed its vibration; And quit work when instruction when commutation controller receives production line, stop to produce exciting current.

Simultaneously, if for a certain reason, the band steel loses tension force, in order to prevent to be with steel to be sucked by coil, can take following measure: when coil is little after to a certain degree with the distance of band steel, commutation controller stops to produce exciting current, thereby magnetic field disappears.

The centre frequency of the filtering bandwidth of conditioner is set at the original frequency that shakes of band string wire, and this frequency and chord length, tension force are relevant.

Description of drawings

Fig. 1 utilizes the structural representation of stablizing the vibration of roller inhibition zone steel in the background technology;

Fig. 2 is the structural representation that utilizes the vibration of the utility model inhibition zone steel;

Fig. 3 is with the stressed schematic diagram of steel for after utilizing the utility model;

Fig. 4 is applied to the schematic diagram of the smooth occasion of planisher for the utility model;

Fig. 5 is applied to the schematic diagram of galvanizing occasion for the utility model.

The specific embodiment

Following according to Fig. 2～Fig. 5, better embodiment of the present utility model is described.

As shown in Figure 2, for utilizing the structural representation of the utility model inhibition zone steel vibration; The inhibition zone steel vibrating device 4 that the utility model provides comprises coil 41, displacement transducer 42; This displacement transducer 42 circuit successively connects conditioner 43, commutation controller 44; And the circuit of output terminal of this commutation controller 44 connects this coil 41; This coil 41, this displacement transducer 42 are placed near the approaching band steel 1 and keep noncontact.

Coil 41 is determined when initial alignment with the distance of band steel 1 and is fixing.Band steel 1 forms a string between two rollers 21,22; Under initial disturbance or dynamic excitation, can vibrate; Vibration signal is detected by displacement transducer 42, and model is that the displacement transducer 42 of Bently 3300 XL 11mm is in detected state all the time, does not pass if detect band steel 1, and coil 41 does not produce magnetic field; When displacement transducer 42 detects band steel 1 when passing, signaling to model is the conditioner 43 of NI PXI-1010; 43 pairs of these signals of conditioner carry out processing such as filtering and obtain with the steel amplitude of 1 this moment, and amplitude is converted into the distance of coil 41 and band steel 1, and this distance is given commutation controller 44 in real time by conditioner 43;

Model is that the commutation controller 44 of Zhuzhou RT-02B is accepted two signals: the one, and production line work order, the 2nd, the distance between coil 41 and the band steel 1.In case receive the production line work order, commutation controller 44 produces a certain size exciting current according to the coil 41 and the distance of band steel 1, and it is supplied with coil 41; The magnetic field that hot-wire coil 41 produces respective strengths; Band steel 1 is subjected to magnetic field force F effect in magnetic field, its size is relevant with magnetic field intensity, and direction is pointed to coil 41; When the tension force T of band steel 1 timing, just there are an equalization point in it and magnetic force, are with this moment steel to keep noncontact stable at stress point, as shown in Figure 3.

Quit work when instruction when commutation controller 44 receives production line, stop to produce exciting current.

In addition, if for a certain reason, the band steel 1 that is positioned between two rollers 21 ', 22 ' loses tension force, in order to prevent to be with steel 1 to be sucked by coil 41, can take following measure: when the distance of coil 41 and band steel 1 little after to a certain degree, commutation controller 44 stops to produce exciting current, thereby magnetic field disappears.

The centre frequency of the filtering bandwidth of conditioner 43 is set at the original frequency that band steel 1 string shakes.This frequency and chord length, tension force are relevant.

As shown in Figure 4, be applied to the schematic diagram of the smooth occasion of planisher for the utility model; Planisher 5 includes roll 51 and S roller 52, in formation process, shakes because string takes place between roll 51 and S roller 52 band steel 1, makes band steel 1 surface produce the vibration line.But the electromagnetic force of utilizing the utility model 4 to produce carries out shaking, and can reduce the generation of vibration line, can avoid again band steel 1 surperficial the generation scratched.

As shown in Figure 5, be applied to the schematic diagram of galvanizing occasion for the utility model.Band steel 1 enters zinc pot 6, through sinking roller 71 and stable roller 72, arrives the air knife 81,82 of control thickness of coating.Band steel 1 up to tens meters above air knife 81,82 is easy to shake, and has had a strong impact on the uniformity of thickness of coating.Because coating does not solidify, and generally should not use stable roller herein.Therefore, in this occasion, the electromagnetic force of utilizing the utility model to produce is carried out contactless stabilized zone steel 1, can significantly improve the uniformity of thickness of coating.In addition, in this occasion, coil has two (coil 411 and coils 412), be positioned over the both sides of band steel 1 respectively, but retainer belt steel 1 is vertical.

Claims

1. the device of an inhibition zone steel vibration is characterised in that it comprises coil, a displacement transducer; This displacement transducer circuit successively connects a conditioner, a commutation controller; And the circuit of output terminal of this commutation controller connects this coil; This coil, this displacement transducer are placed near the approaching band steel and keep noncontact.

2. the device of inhibition zone steel vibration as claimed in claim 1 is characterized in that, the centre frequency of the filtering bandwidth of described conditioner is set at the original frequency that the band string wire shakes.