System for preventing strip steel from deviating

Abstract

The utility model relates to a system for preventing deviation of strip steel, which comprises spindle rollers which are arranged at wrap angle positions of a unit and the strip steel and used for deviation correction of the strip steel of the unit. The middle of the spindle roller adopts a flat roller body, the two sides of the spindle roller symmetrically adopt roller shapes composed of linear sections, and one ends of the linear sections are connected with the middle flat roller body. The device has the advantages that the spindle rollers can be arranged on all the rollers which can form a certain wrap angle with the strip steel in the unit, the strip steel can be automatically rectified by utilizing the wrap angle and the tensioning force of the strip steel and the rollers, a photoelectric detection and hydraulic rectifying system is not needed, the production and operation cost is saved, and the equipment maintenance amount is reduced; the spindle-shaped roller adopts a structure that a middle flat roller body is combined with a linear section, so that the phenomenon that the middle of the strip steel is stretched out of other parts in the width direction due to the action of unit tension in the running process of the strip steel because the convexity of the middle part of the roller is concentrated at one point is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to cold-rolled strip steel production technical field especially relates to a prevent strip steel deviation system. BACKGROUND

[0002] Cold-rolled strip steel is an important steel material, which is widely used in automobile, ship, aerospace, machinery and other industries. Figure 5 The length of the unit of the cold-rolled strip steel plant reaches hundreds of meters, and the online length of the strip steel exceeds one kilometer. When the strip steel deviates to one side, the conventional anti-deviation technology of the strip steel outputs the deviation signal of the strip steel to the hydraulic control system through the photoelectric detection system, and the hydraulic cylinder drives the deviation roller to swing to the other side, so that the strip steel is centered. The existing unit usually has 5-8 sets of deviation control systems, which can only meet the deviation control of the local section. When the strip steel has a persistent wedge shape, deviation accidents will occur, causing strip breakage and equipment damage SUMMARY

[0003] The utility model discloses a prevent strip steel deviation system, and the strip steel is deviated automatically in all sections of the unit, and the deviation accident of the strip steel is eliminated.

[0004] In order to realize the above-mentioned purpose, the utility model discloses the following technical scheme:

[0005] A prevent strip steel deviation system, including spindle roller, spindle roller is arranged in the position with the wrap angle between the unit and the strip steel, is used for the deviation of the unit strip steel;

[0006] The middle part of the spindle roller adopts a flat roller body, and the two sides of the spindle roller symmetrically adopt a roller shape composed of straight line segments, one end of the straight line segment is connected with the middle part of the flat roller body, and the diameter d of the two ends of the spindle roller is 500-700mm;

[0007] The diameter D of the flat roller body satisfies the following formula:

[0008] D=d+4~6mm ①

[0009] The length 1 of the flat roller body satisfies the following formula:

[0010] 1=minimum strip steel width * (10%~12% ) ②

[0011] The length L of the spindle roller satisfies the following formula:

[0012] L=maximum strip steel width+(100~120mm) ③

[0013] The unit includes a pickling unit, a cold-rolling unit, a pickling-rolling combined unit, an annealing unit and a hot-dip galvanizing unit.

[0014] Compared with the prior art, the utility model has the advantages of:

[0015] 1. In the unit, the roller which can form a certain wrap angle with the strip can be arranged with the spindle roller, without the photoelectric detection and hydraulic correction system, saving the production operation cost and reducing the equipment maintenance amount;

[0016] 2. It is applied to the pickling unit, rolling unit, pickling-rolling combined unit, annealing unit and hot galvanizing unit of the cold rolling mill, realizes the deviation correction of the strip covering the whole unit, and can eliminate the deviation accidents of different sections of the unit.

[0017] 3. The spindle roller adopts the structure of combining the middle flat roller body with the straight line section, avoiding the situation that the strip width direction middle stretching exceeds other parts due to the tension of the unit caused by the central point of the roller middle convexity. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic view of the spindle roller structure.

[0019] Figure 2 It is a schematic view of the horizontal component forces of the strip being equal.

[0020] Figure 3 It is a schematic view of the strip being deviated to the left, and the right horizontal component force being greater than the left horizontal component force.

[0021] Figure 4 It is the distribution of the spindle roller in the pickling-rolling combined unit.

[0022] Figure 5 It is the distribution of the deviation correction device with the hydraulic correction control system in the pickling-rolling combined unit.

[0023] In the figure: 101 - deviation correction roller, 102 - pickling tank, 103 - loop car, 104 - loop, 105 - cold slag machine, 106 - trimming shear. DETAILED DESCRIPTION

[0024] The utility model will be described in detail below in combination with the drawings of the specification, but it should be pointed out that the implementation of the utility model is not limited to the following embodiments.

[0025] The following examples are implemented on the premise of the technical scheme of the utility model, and detailed implementation modes and specific operation processes are given, but the protection scope of the utility model is not limited to the following examples. The methods used in the following examples are all conventional methods unless otherwise specified.

[0026]

Embodiment 1

[0027] A self-aligning roll with a special roll shape achieves self-alignment of the strip steel based on mechanical principles. This self-aligning roll has a self-aligning function, eliminating the need for photoelectric detection and hydraulic alignment control systems. It replaces the existing cylindrical flat rolls, achieving full coverage of strip steel alignment within the unit.

[0028] See Figure 4 A strip deviance prevention system includes spindle rollers, which are installed at the wrap angles between the unit and the strip for strip deviance correction. The unit includes a pickling unit, a cold rolling unit, a pickling-rolling combined unit, an annealing unit, and a hot-dip galvanizing unit.

[0029] See Figure 1 The middle part of the spindle roller adopts a flat roller body, and the two sides of the spindle roller adopt a roller shape composed of straight segments. One end of the straight segment is connected to the middle flat roller body. The diameter d at both ends of the spindle roller is 500~700mm.

[0030] The diameter D of the flat roller body satisfies the following formula:

[0031] D = d + 4~6mm ①

[0032] The length 1 of the flat roller body satisfies the following formula:

[0033] 1 = Minimum strip width × (10%~12%) ②

[0034] The length L of the spindle roller satisfies the following formula:

[0035] L = Maximum strip width + (100~120mm) ③

[0036] When the minimum width of the strip produced by the unit is 1000mm and the maximum width is 2150mm, and the diameter of the flat roller is d=550mm, then the following is determined: spindle roller l=1000×10%=100mm, L=2150+100=2250mm, D=550+6=556mm.

[0037] Work process:

[0038] 1) During strip operation, the strip exerts a certain wrap angle and tension on the rollers. When the centerline of the strip is aligned with the centerline of the spindle roller, the horizontal components F1 and F2 acting on the strip are equal. See Figure 2 ;

[0039] 2) When the strip shifts to the left, the horizontal component force F2 to the left decreases, and the horizontal component force F1 to the right increases, pushing the strip to the right until the centerline of the strip aligns with the centerline of the roller. At this point, the horizontal component force returns to F1=F2, and the spindle roller no longer adjusts the strip position. See [link to relevant documentation]. Figure 3 ;

[0040] 3) When the strip steel deviates to the right, the horizontal component F1 of the strip steel to the right decreases, and the horizontal component F2 to the left increases, pushing the strip steel to move to the left until the center line of the strip steel is aligned with the center line of the roller, and the horizontal component returns to F1=F2.

[0041] On this basis, the application position of the spindle roller in the unit is increased.

[0042] See Figure 4 Taking the pickling and rolling mill-units as an example, the spindle roller replaces the flat roller on the prior art unit:

[0043] 1) Replace 1# transmission roller group 1

[0044] 1# transmission roller group is responsible for the transmission of the strip steel between the inlet section 0-1, and inputs the strip steel between the inlet section 0-1 into the inlet loop between 1-3; after replacement, it can ensure that the strip steel runs in the center in the inlet section and the inlet loop.

[0045] 2) Replace the inlet loop roller 2

[0046] The inlet loop roller 2 is responsible for the turning and guiding of the strip steel between 1-3 in the inlet loop, and after replacement, it can ensure that the strip steel runs in the center in the inlet loop 1-3.

[0047] 3) Replace the inlet loop outlet guide roller 3

[0048] The inlet loop outlet guide roller 3 is responsible for changing the horizontally running strip steel into vertically upward running, and after replacement, it can ensure that the strip steel runs in the center between the inlet loop roller 3 and the front guide roller 4 of the process section.

[0049] 4) Replace the front guide roller 4 of the process section

[0050] The front guide roller 4 of the process section is responsible for changing the vertically running strip steel into horizontally forward running, so that the strip steel enters the pickling tank, and after replacement, it can ensure that the strip steel runs in the center between 3-4 and 4-5.

[0051] 5) Replace 2# transmission roller group 5

[0052] 2# transmission roller group 5 is responsible for the transmission of the strip steel between the process section 4-6, and after replacement, it can ensure that the strip steel runs in the center between the process section 4-6.

[0053] 6) Replace the process section outlet guide roller 6

[0054] The process section outlet guide roller 6 is responsible for changing the horizontally running strip steel in the process section into downward running, and after replacement, it can ensure that the strip steel runs in the center between the process section 4-6.

[0055] 7) Replace 3# transmission roller group 7

[0056] 3#Transmission roller group 7 is responsible for the process of the strip between the exit loop 7-9, instead of the latter can ensure that the exit loop 7-9 between the strip running center.

[0057] 8) Instead of the exit loop guide roller 8

[0058] The exit loop guide roller 8 is responsible for the turnover of the strip in the exit loop, instead of the latter can ensure that the exit loop 7-9 between the strip running center.

[0059] 9) Instead of 4#Transmission roller group 9

[0060] 4#Transmission roller group 9 is responsible for the transmission of the strip between the exit section 9-10, instead of the latter can ensure that the exit section 9-10 between the strip running center.

[0061] 10) Instead of the pre-rolling loop entrance guide roller 10

[0062] The pre-rolling loop entrance guide roller 10 is responsible for changing the horizontal running of the strip in the exit section to vertical upward running. Instead of the latter can ensure that the strip between 10-11 runs in the center.

[0063] 11) Instead of the pre-rolling loop horizontal guide roller 11

[0064] The pre-rolling loop horizontal guide roller 11 is responsible for changing the vertical running of the strip to horizontal running, instead of the latter can ensure that the strip between 11-12 runs in the center in the pre-rolling loop.

[0065] 12) Instead of the pre-rolling loop guide roller 12

[0066] The pre-rolling loop guide roller 12 is responsible for the turnover of the strip in the pre-rolling loop. Instead of the latter can ensure that the strip between 12-13 runs in the center in the pre-rolling loop.

[0067] 13) Instead of the pre-rolling loop guide roller 13

[0068] The pre-rolling loop guide roller 13 is responsible for the turnover of the strip in the pre-rolling loop. Instead of the latter can ensure that the strip between 13-14 runs in the center in the pre-rolling loop.

[0069] 14) Instead of the pre-rolling loop guide roller 14

[0070] The pre-rolling loop guide roller 14 is responsible for the turnover of the strip in the pre-rolling loop, instead of the latter can ensure that the strip between 14-15 runs in the center in the pre-rolling loop.

[0071] 15) Instead of the pre-rolling loop guide roller 15

[0072] The pre-rolling loop guide roller 15 is responsible for changing the horizontal running of the strip in the pre-rolling loop exit to vertical downward running, instead of the latter can ensure that the strip between 15-16 runs in the center.

[0073] 16) instead of the horizontal guide roller 16 before the rolling mill

[0074] The horizontal guide roller 16 before the rolling mill is responsible for changing the vertical running of the strip to horizontal running. After the replacement, the strip can be ensured to run in the center.

[0075] 17) instead of the 5# drive roller set 17

[0076] The 5# drive roller set 17 is responsible for conveying the strip to the rolling mill, and after the replacement, the strip can enter the rolling mill in the center and in a flat state.

[0077] The utility model discloses a spindle roller can be arranged in the roller that can form a certain wrap angle with the strip in the unit, and the spindle roller does not need photoelectric detection and hydraulic deviation rectifying system, saves production operation cost, reduces equipment maintenance quantity, is applied to pickling unit, rolling mill unit, pickling-rolling mill combined unit, annealing unit, hot galvanizing unit in cold rolling mill, realizes covering the whole unit to the strip deviation rectification, can eliminate the deviation accident of different unit sections, the spindle roller adopts the structure that the middle flat roller body combines with straight line section, avoids the middle part convexity of the roller to concentrate a point, causes the strip width direction middle to be stretched to exceed other parts due to the unit tension in the strip operation.

Claims

1. A system for preventing strip run-off, characterized by The spindle roller is arranged at the position where the machine set and the strip steel have an included angle, and is used for correcting the strip steel of the machine set; The spindle roller is provided with a flat roller body in the middle part, and symmetrical roller shapes composed of straight line segments are arranged on both sides of the spindle roller, one end of the straight line segment is connected with the flat roller body in the middle part, and the diameter d of the two ends of the spindle roller is 500-700 mm; The diameter D of the flat roller body satisfies the formula as follows: D=d+4-6mm ① The length 1 of the flat roller body satisfies the formula as follows: 1=minimum strip steel width×10%-12% ② The length L of the spindle roller satisfies the formula as follows: L=maximum strip steel width+100-120mm ③.

2. The strip steel deviation prevention system of claim 1, wherein The machine set comprises an acid pickling machine set, a cold rolling machine set, an acid pickling and rolling combined machine set, an annealing machine set and a hot galvanizing machine set.

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