CN103551392B - For transmission device and the drive method thereof of cold rolled strip steel production line - Google Patents

Abstract

The invention provides a kind of transmission device for cold rolled strip steel production line and control method thereof, the described transmission device for cold rolled strip steel production line adopts some showy devices to manufacture continuous print blast, enable cold-strip steel contactlessly transmission in oven, strengthen the cured effect of oven to cold-strip steel, considerably increase the surface quality of cold-strip steel; The present invention also adopts the specification of cold-strip steel described in control system Real-time Obtaining, transmission speed and passes in and out the weld seam signal of described oven, can to the blast of the cold-strip steel of different size in time automatically needed for the showy device of adjustment, make the transmission of cold-strip steel more smooth, improve the efficiency that it is produced, and avoid showy device blast too small, excessive or switching time is incorrect time the accident that may cause, improve the security that it is produced.

Description

For transmission device and the drive method thereof of cold rolled strip steel production line

Technical field

The present invention relates to a kind of device for output strip line, particularly relate to a kind of transmission device for cold rolled strip steel production line and control method thereof.

Background technology

Along with the industries such as automobile, power equipment, building materials and municipal administration are for realizing industrial upgrading, continually develop the needs of high standard, high value added product, to the steel raw material of upstream, particularly more and more higher to the surface quality requirements of all kinds of cold-strip; And on current Cold Strip Processing Line, the transmission of band steel generally adopts roller+motor (contact) kind of drive, this mode cannot meet the requirement of the product Surface Qualities such as the silicon steel after face coat and some special stainless strip.

Summary of the invention

The invention provides a kind of transmission device for cold rolled strip steel production line and control method thereof, with the non-contact transmission adopting blast to realize cold-strip steel.

For achieving the above object, the invention provides a kind of transmission control device for cold rolled strip steel production line, be arranged in the oven of described cold rolled strip steel production line, described oven is outer is equipped with backspin rolls near its entrance and exit, described transmission control device comprises some levitrons, showy device blower fan and control system, described some levitrons equidistantly form a line and are arranged in oven, two levitrons at described some levitron two ends are respectively near entrance and the exit of described oven, described some levitrons are all connected with described showy device blower fan, described levitron blower fan is connected with described control system telecommunications, described control system is for obtaining the specification of described cold-strip steel, transmission speed and pass in and out the weld seam signal of described oven, and by calculating the blast setting value of described levitron and the switching time of this setting value in real time, rotating speed simultaneously by controlling described showy device blower fan regulates described showy device blast to described setting value.

Further, described oven total length 146 meters, the quantity of described levitron is 18, and it is 6 meters, interval between two, is 36.3 meters near the distance between the levitron of described hot oven entrance and described hot oven entrance.

The present invention also provides a kind of control method for the above-mentioned transmission control device for cold rolled strip steel production line, comprising:

Step one: when new volume cold-strip steel arrives the entrance of oven, obtains this product specification of rolling up cold-rolled strip, the speed of service by control system and enters the weld seam signal of oven;

Step 2: new volume cold-strip steel continues to transmit in oven, described control system calculates the blast setting value of showy device according to the specification of new volume cold-strip steel, the specification of the specification and a upper volume cold-strip steel of newly rolling up cold-strip steel is made comparisons simultaneously, if both specifications are identical, then the blast controlling levitron is constant; If the former bandwidth is less than the latter, then controls levitron pressure, before the arrival of new volume cold-strip steel is near the levitron of described hot oven entrance, blast is adjusted to described setting value; If the former band is wider than the latter, then controls described levitron pressure, after the arrival of new volume cold-strip steel is near the levitron of described hot oven entrance, blast is adjusted to described setting value;

Step 3: after the weld seam signal when obtaining new volume cold-strip steel and being exported by described oven, described control system quits work, remains to next volume cold-strip steel and enters described oven by the blast of described levitron.

Further, in described step 2, if the former bandwidth is less than the latter, then control described levitron, when new volume cold-strip steel arrives distance to a declared goal before near the levitron of described hot oven entrance, blast is adjusted to described setting value, described control system carries out integration by the transmission speed of the new volume cold-strip steel obtained it, thus is newly rolled up the time that cold-strip steel arrives assigned address.

Further, in described step 2, if the former band is wider than the latter, then control described levitron and during distance to a declared goal, blast is adjusted to described setting value after the levitron that new volume cold-strip steel reaches near described hot oven entrance, described control system carries out integration by the transmission speed of the new volume cold-strip steel obtained it, thus is newly rolled up the time that cold-strip steel arrives assigned address.

Further, described distance to a declared goal is 3-5 rice.

Further, the computing formula of the blast setting value of showy device pressure is as follows:

$P_0=\frac{(L_0\·{\mathrm{\δ}}_G\·{\mathrm{\ρ}}_G)/4}{m_1+m_2\frac{L_1}{4}-m_1{m}_2};$

Wherein, $m_1=\frac{{\mathrm{\δ}}_J}{{\mathrm{\δ}}_J+0.44(h+h_b)}\·\left({\mathrm{\δ}}_J\sin {\mathrm{\θ}}_a\right),$ $m_2=\frac{\mathrm{\ξ}\·0.86{\left(\frac{{\mathrm{B\δ}}_J}{L_{1}h}\right)}^2}{1+\mathrm{\ξ}\·0.86{\left(\frac{{\mathrm{B\δ}}_J}{L_{1}h}\right)}^2};$

Wherein, P ₀: adjusted value; L ₀: cold-strip steel span; δ _g: cold-strip steel thickness; ρ _g: cold-strip steel density; δ _j: levitron jet orifice width; θ _a: the angle in jet and cold-strip steel steel face, value θ _a=30 °; H: the absolute altitude of cold-strip steel; h _b: levitron deflector height; B: levitron working width; L1: levitron length; ξ: flow resistance coefficient, value ξ=1.25-1.5.

Compared with prior art, the present invention has following beneficial effect:

Transmission device for cold rolled strip steel production line provided by the invention adopts some showy devices to manufacture continuous print blast, enable cold-strip steel contactlessly transmission in oven, strengthen the cured effect of oven to cold-strip steel, considerably increase the surface quality of cold-strip steel; The present invention also adopts the specification of cold-strip steel described in control system Real-time Obtaining, transmission speed and passes in and out the weld seam signal of described oven, can to the blast of the cold-strip steel of different size in time automatically needed for the showy device of adjustment, make the transmission of cold-strip steel more smooth, improve the efficiency that it is produced, and avoid showy device blast too small, excessive or switching time is incorrect time the accident that may cause, improve the security that it is produced.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the invention will be further described:

The structural representation of the transmission device for cold rolled strip steel production line that Fig. 1 provides for the embodiment of the present invention;

The flow chart of the drive method of the transmission device for cold rolled strip steel production line that Fig. 2 provides for the embodiment of the present invention.

In FIG,

1: float device; 2: control system; 3: cold-strip steel; 4: oven; 41: entrance; 42: outlet; 5: backspin rolls; 6: levitron blower fan.

Detailed description of the invention

The transmission device for cold rolled strip steel production line proposed the present invention below in conjunction with the drawings and specific embodiments and drive method thereof are described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.

The invention provides a kind of transmission device for cold rolled strip steel production line and control method thereof, the described transmission device for cold rolled strip steel production line adopts some showy devices to manufacture continuous print blast, enable cold-strip steel contactlessly transmission in oven, strengthen the cured effect of oven to cold-strip steel, considerably increase the surface quality of cold-strip steel; The present invention also adopts the specification of cold-strip steel described in control system Real-time Obtaining, transmission speed and passes in and out the weld seam signal of described oven, can to the blast of the cold-strip steel of different size in time automatically needed for the showy device of adjustment, make the transmission of cold-strip steel more smooth, improve the efficiency that it is produced, and avoid showy device blast too small, excessive or switching time is incorrect time the accident that may cause, improve the security that it is produced.

Please refer to Fig. 1 and Fig. 2, the structural representation of the transmission device for cold rolled strip steel production line that Fig. 1 provides for the embodiment of the present invention; The flow chart of the drive method of the transmission device for cold rolled strip steel production line that Fig. 2 provides for the embodiment of the present invention.

As shown in Figure 1, the embodiment of the present invention provides a kind of transmission control device for cold rolled strip steel production line, be arranged in the oven 4 of described cold rolled strip steel production line, described oven 4 is outer is equipped with backspin rolls 5 near its entrance and exit, cold-strip steel 3 is supported by described backspin rolls 5 and the tensioner be arranged in cold rolled strip steel production line, guiding and transmission, described transmission device comprises some levitrons 1, levitron blower fan 6 and control system 2, described some levitrons 1 equidistantly form a line and are arranged in oven 4, two levitrons 1 at described some levitrons 1 two ends are respectively near entrance and the exit of described oven 4, described some levitrons 1 are all connected with described showy device blower fan 6, described levitron blower fan 6 is connected with described control system 2 telecommunications, described control system 2 is for obtaining the specification of described cold-strip steel 3, transmission speed and pass in and out the weld seam signal of described oven 4, and by calculating the blast setting value of described levitron 1 and the switching time of this setting value in real time, rotating speed simultaneously by controlling described showy device blower fan 6 regulates described showy device blast to described setting value.

In the present embodiment, described cold-strip steel 3 does not contact any carrying roller after entering oven 4, supports by the device 1 that floats completely, and is transmitted by the tensioner be arranged in cold rolled strip steel production line.Between a showy device 1 nearest from it, be provided with a large amount of bellows be arranged symmetrically with up and down at oven 4 entrance, play effect that is stable and support cold-strip steel 3, the pressure of bellows is not with the specifications vary of cold-strip steel 3.

Further, oven 4 total length 146 meters, the quantity of described levitron 1 is 18, it is 6 meters, interval between two, it is 36.3 meters near the distance between the levitron 1 of described oven 4 entrance and described oven 4 entrance, cold-strip steel 3 naturally hangs down and swings from the coating machine top roller cold rolled strip steel production line, and enters described oven 4 by described backspin rolls 5 delivery.

As shown in Figure 2, the embodiment of the present invention also provides a kind of control method for the above-mentioned transmission control device for cold rolled strip steel production line, and described control method comprises:

Step one: when a volume cold-strip steel 3 arrives the entrance 41 of oven, obtains this product specification of rolling up cold-rolled strip 3, the speed of service by control system 2 and enters the weld seam signal of oven;

Step 2: new volume cold-strip steel 3 continues to transmit in oven 4, the specification of the specification and a upper volume cold-strip steel 3 of newly rolling up cold-strip steel 3, by calculating the blast setting value of showy device 1 according to the product specification of new volume cold-strip steel 3, is made comparisons by control system 2 simultaneously.If both specifications are identical, then the blast controlling levitron 1 is constant; If the former bandwidth is less than the latter, then controls levitron pressure, before the levitron 1 that new volume cold-strip steel 3 arrives near described oven 4 entrance, blast is adjusted to described setting value; If the former band is wider than the latter, then control, described levitron pressure arrives the levitron 1 entering 4 mouthfuls near described oven at new volume cold-strip steel 3 after, blast is adjusted to described setting value;

Step 3: after the weld seam signal when obtaining new volume cold-strip steel 3 and being exported by described oven 4, described control system 2 quits work, remains to next volume cold-strip steel 3 and enters described oven 4 by the blast of described levitron 1.

Further, in described step 2, if the former bandwidth is less than the latter, then control described levitron 1 and during distance to a declared goal, blast is adjusted to described setting value before the levitron 1 that new volume cold-strip steel 3 arrives near described oven 4 entrance, described control system 2 carries out integration by the transmission speed of the new volume cold-strip steel 3 obtained it, thus is newly rolled up the time that cold-strip steel 3 arrives assigned address.

Further, in described step 2, if the former band is wider than the latter, then control described levitron 1 and during distance to a declared goal, blast is adjusted to described setting value after the levitron 1 that new volume cold-strip steel 3 reaches near described oven 4 entrance, described control system 2 carries out integration by the transmission speed of the new volume cold-strip steel 3 obtained it, thus is newly rolled up the time that cold rolling strap 3 steel arrives assigned address.

Preferably, above-mentioned distance to a declared goal is 3-5 rice.

Further, the computing formula of the blast setting value of described levitron is as follows:

$P_0=\frac{(L_0\·{\mathrm{\δ}}_G\·{\mathrm{\ρ}}_G)/4}{m_1+m_2\frac{L_1}{4}-m_1{m}_2};$

Wherein, $m_1=\frac{{\mathrm{\δ}}_J}{{\mathrm{\δ}}_J+0.44(h+h_b)}\·\left({\mathrm{\δ}}_J\sin {\mathrm{\θ}}_a\right),$ $m_2=\frac{\mathrm{\ξ}\·0.86{\left(\frac{{\mathrm{B\δ}}_J}{L_{1}h}\right)}^2}{1+\mathrm{\ξ}\·0.86{\left(\frac{{\mathrm{B\δ}}_J}{L_{1}h}\right)}^2};$

Wherein, P ₀: adjusted value; L ₀: cold-strip steel span; δ _g: cold-strip steel thickness; ρ _g: cold-strip steel density; δ _j: levitron jet orifice width; θ _a: the angle in jet and cold-strip steel steel face, value θ _a=30 °; H: the absolute altitude of cold-strip steel; h _b: levitron deflector height; B: levitron working width; L1: levitron length; ξ: flow resistance coefficient, value ξ=1.25-1.5.

In sum, transmission device for cold rolled strip steel production line provided by the invention adopts some showy devices 1 to manufacture continuous print blast, make cold-strip steel 3 can contactlessly transmission in oven 4, strengthen the cured effect of oven 4 pairs of cold-strip steels 3, considerably increase the surface quality of cold-strip steel 3; The present invention also adopts the specification of cold-strip steel 3 described in control system 2 Real-time Obtaining, transmission speed and passes in and out the weld seam signal of described oven 4, can to the blast of the cold-strip steel 3 of different size in time automatically needed for the showy device 1 of adjustment, make the transmission of cold-strip steel 3 more smooth, improve the efficiency that it is produced, and avoid the accident that showy device 1 may cause when blast is too small or excessive or switching time is incorrect, improve the security that it is produced.

Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if of the present invention these change and modification belongs within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.

Claims (7)

1. the control method for the transmission control device of cold rolled strip steel production line, described transmission control device is arranged in the oven of described cold rolled strip steel production line, described oven is outer is equipped with backspin rolls near its entrance and exit, it is characterized in that, described transmission control device comprises some levitrons, showy device blower fan and control system, described some levitrons equidistantly form a line and are arranged in oven, two levitrons at described some levitron two ends are respectively near entrance and the exit of described oven, described some levitrons are all connected with described showy device blower fan, described levitron blower fan is connected with described control system telecommunications, described control system is for obtaining the specification of described cold-strip steel, transmission speed and pass in and out the weld seam signal of described oven, and by calculating the blast setting value of described levitron and the switching time of this setting value in real time, rotating speed simultaneously by controlling described showy device blower fan regulates described showy device blast to described setting value, described control method comprises:

Step one: when new volume cold-strip steel arrives the entrance of oven, obtains this product specification of rolling up cold-rolled strip, the speed of service by control system and enters the weld seam signal of oven;

Step 2: new volume cold-strip steel continues to transmit in oven, described control system calculates the blast setting value of showy device according to the specification of new volume cold-strip steel, the specification of the specification and a upper volume cold-strip steel of newly rolling up cold-strip steel is made comparisons simultaneously, if both specifications are identical, then the blast controlling levitron is constant; If the former bandwidth is less than the latter, then controls levitron pressure, before the arrival of new volume cold-strip steel is near the levitron of described hot oven entrance, blast is adjusted to described setting value; If the former band is wider than the latter, then controls described levitron pressure, after the arrival of new volume cold-strip steel is near the levitron of described hot oven entrance, blast is adjusted to described setting value;

Step 3: after the weld seam signal when obtaining new volume cold-strip steel and being exported by described oven, described control system quits work, remains to next volume cold-strip steel and enters described oven by the blast of described levitron.

2. the control method of the transmission control device for cold rolled strip steel production line according to claim 1, it is characterized in that, described oven total length 146 meters, the quantity of described levitron is 18, it is 6 meters, interval between two, is 36.3 meters near the distance between the levitron of described hot oven entrance and described hot oven entrance.

3. the control method of the transmission control device for cold rolled strip steel production line according to claim 1, it is characterized in that, in described step 2, if the former bandwidth is less than the latter, then control described levitron, when new volume cold-strip steel arrives distance to a declared goal before near the levitron of described hot oven entrance, blast is adjusted to described setting value, described control system carries out integration by the transmission speed of the new volume cold-strip steel obtained it, thus is newly rolled up the time that cold-strip steel arrives assigned address.

4. the control method of the transmission control device for cold rolled strip steel production line according to claim 3, is characterized in that, described distance to a declared goal is 3-5 rice.

5. the control method of the transmission control device for cold rolled strip steel production line according to claim 1, it is characterized in that, in described step 2, if the former band is wider than the latter, then control described levitron and during distance to a declared goal, blast is adjusted to described setting value after the levitron that new volume cold-strip steel reaches near described hot oven entrance, described control system carries out integration by the transmission speed of the new volume cold-strip steel obtained it, thus is newly rolled up the time that cold-strip steel arrives assigned address.

6. the control method of the transmission control device for cold rolled strip steel production line according to claim 5, is characterized in that, described distance to a declared goal is 3-5 rice.

7. the control method of the transmission control device for cold rolled strip steel production line according to claim 1 or 3 to 6 any one, is characterized in that, the computing formula of the blast setting value of described levitron is as follows:

$P_0=\frac{(L_0\·{\mathrm{\δ}}_G\·{\mathrm{\ρ}}_G)/4}{m_1+m_2\frac{L_1}{4}-m_1{m}_2};$

Wherein, $m_1=\frac{{\mathrm{\δ}}_J}{{\mathrm{\δ}}_J+0.44(h+h_b)}\·\left({\mathrm{\δ}}_J\sin {\mathrm{\θ}}_a\right),m_2=\frac{\mathrm{\ξ}\·0.86{\left(\frac{B{\mathrm{\δ}}_J}{L_{1}h}\right)}^2}{1+\mathrm{\ξ}\·0.86{\left(\frac{B{\mathrm{\δ}}_J}{L_{1}h}\right)}^2};$

Wherein, P0: adjusted value; L0: cold-strip steel span; δ G: cold-strip steel thickness; ρ G: cold-strip steel density; δ J: levitron jet orifice width; θ _a: the angle in jet and cold-strip steel steel face, value θ _a=30 °; H: the absolute altitude of cold-strip steel; Hb: levitron deflector height; B: levitron working width; L1: levitron length; ξ: flow resistance coefficient, value ξ=1.25-1.5.