Strip steel rolling line four-roller mill

Abstract

The utility model discloses a strip steel rolling line four-roller mill which comprises an upper driving wheel, a lower driving wheel, an upper rolling wheel and a lower rolling wheel, the upper rolling wheel is connected with the upper driving wheel, the lower rolling wheel is connected with the lower driving wheel, the lower rolling wheel is located on the front side or the rear side under the upper rolling wheel, and the wheel diameter of the lower rolling wheel is the same as that of the upper rolling wheel. According to the strip steel rolling line four-roller mill, the upper driving wheel and the lower driving wheel respectively drive the upper rolling wheel and the lower rolling wheel to press strip steel, and the upper rolling wheel and the lower rolling wheel are staggered in the horizontal direction, so that the upper rolling wheel or the lower rolling wheel is sequentially contacted with the strip steel, the warping of the strip steel is pre-compensated and corrected, and the phenomena of head warping and head buckling of the strip steel are eliminated.

Description

Technical Field

[0001] The utility model belongs to the technical field of four-roller rolling mills, and more specifically relates to a four-roller rolling mill for a strip steel rolling line. Background Art

[0002] Traditional strip rolling mills adjust the buckle head by adjusting the elevation, roller pressure, and water cooling deviation of the rolling mill, but sometimes the effect is not obvious, and there are certain hidden dangers in adjusting the cooling deviation, which is difficult to control. Once the buckle head is seriously warped and the material shape is skewed, it is very easy to hit the side guide plate and fail to bite into the downstream frame to cause scrap steel, and even pile up steel and roll out of the roller ring to cause a serious accident. Utility Model Content

[0003] The utility model aims to provide a strip steel rolling line four-roller rolling mill to solve the problem that the existing strip steel buckle warping head adjustment is not well controlled in view of the deficiencies in the prior art.

[0004] In order to achieve the above-mentioned object, the utility model provides a strip steel rolling line four-roller rolling mill, comprising:

[0005] upper drive wheel and lower drive wheel;

[0006] An upper roller wheel, the upper roller wheel is connected to the upper driving wheel;

[0007] A lower roller wheel is connected to the lower driving wheel, the lower roller wheel is located at the front side or the rear side directly below the upper roller wheel, and the wheel diameters of the lower roller wheel and the upper roller wheel are the same.

[0008] Optionally, a rolling gap is provided between the lower driving wheel and the upper driving wheel.

[0009] Optionally, the upper drive wheel is located directly above the lower drive wheel.

[0010] Optionally, the axis line connecting the upper roller and the lower roller is located on the feeding side of the axis line connecting the upper drive wheel and the lower drive wheel.

[0011] Optionally, it also includes a front lining plate and a rear lining plate, which are respectively detachably connected to the roll box of the four-roll mill of the strip rolling line, and the upper roll wheel and the lower roll wheel are arranged between the front lining plate and the rear lining plate.

[0012] Optionally, the front lining plate and the rear lining plate are L-shaped respectively, and are centrally symmetrical structures. The front lining plate and the rear lining plate can be assembled into a rectangle.

[0013] Optionally, the upper roller wheel and the upper driving wheel are coaxially connected via a universal joint shaft.

[0014] The utility model provides a strip steel rolling line four-roller rolling mill, which has the following beneficial effects:

[0015] 1. The four-roller rolling mill of the strip steel rolling line drives the upper roller and the lower roller to press the strip steel through the upper driving wheel and the lower driving wheel respectively. The upper roller and the lower roller are staggered in the horizontal direction, so that the upper roller or the lower roller contacts the strip steel successively, pre-compensating and correcting the warping of the strip steel, and eliminating the warping and buckling of the strip steel.

[0016] 2. This structural improvement does not require adjustment of cooling water parameters, strip conveying parameters, pressing speed and other values, and is simple and efficient to use.

[0017] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0019] Figure 1 A schematic structural diagram of a four-roller mill for a strip steel rolling line according to an embodiment of the utility model is shown.

[0020] Figure 2 A schematic structural diagram of a liner plate of a four-roller mill for a strip steel rolling line according to an embodiment of the utility model is shown.

[0021] Description of reference numerals:

[0022] 1. Upper driving wheel; 2. Lower driving wheel; 3. Upper roller wheel; 4. Lower roller wheel; 5. Front lining plate; 6. Rear lining plate. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0024] like Figure 1 As shown, a strip steel rolling line four-high rolling mill comprises:

[0025] An upper driving wheel 1 and a lower driving wheel 2;

[0026] An upper roller wheel 3, the upper roller wheel 3 is connected to the upper driving wheel 1;

[0027] The lower roller 4 is connected to the lower driving wheel 2, and the lower roller 4 is located at the front side or the rear side directly below the upper roller 3. The wheel diameters of the lower roller 4 and the upper roller 3 are the same.

[0028] Specifically, the lower roller 4 and the lower roller 3 have the same wheel diameter and the same rotation speed. The upper roller 3 and the lower roller 4 are driven by the upper driving wheel 1 and the lower driving wheel 2 to press the strip steel. The upper roller 3 and the lower roller 4 are staggered in the horizontal direction, so that the upper roller 3 or the lower roller 4 contacts the strip steel successively, pre-compensating and correcting the warping of the strip steel, and eliminating the warping and buckling of the strip steel. This structural improvement does not require adjustment of various values ​​such as cooling water parameters, strip steel conveying parameters and pressing speed, and is simple and efficient to use.

[0029] Furthermore, the misalignment of the upper roller 3 and the lower roller 4 can be adjusted by adding shims.

[0030] In this embodiment, a rolling gap is provided between the lower driving wheel 2 and the upper driving wheel 1 .

[0031] Specifically, the strip is rolled through a rolling gap.

[0032] In this embodiment, the upper driving wheel 1 is located directly above the lower driving wheel 2 .

[0033] In this embodiment, the axis connecting the upper roller 3 and the lower roller 4 is located at the feeding side of the axis connecting the upper driving wheel 1 and the lower driving wheel 2 .

[0034] Specifically, the upper roller 3 and the lower roller 4 are arranged in front.

[0035] Furthermore, the upper roller 3 and the lower roller 4 are positioned 5-10 mm in front of each other, and the upper roller 3 is positioned 0.5-2.5 mm in front of or behind the lower roller 4 in the horizontal direction.

[0036] like Figure 2 As shown, in this embodiment, it also includes a front lining plate 5 and a rear lining plate 6, which are respectively detachably connected to the roll box of the four-roll mill of the strip rolling line, and the upper roll wheel 3 and the lower roll wheel 4 are arranged between the front lining plate 5 and the rear lining plate 6.

[0037] Specifically, the upper roller 3 and the lower roller 4 are fixed by the front lining plate 5 and the rear lining plate 6. A front lining plate 5 and a rear lining plate 6 form a group, and each group corresponds to different horizontal gaps between the upper roller 3 and the lower roller.

[0038] Furthermore, the front lining plate 5 and the rear lining plate 6 may also be provided with an electric, pneumatic or hydraulic telescopic mechanism to drive the upper roller wheel 3 and the lower roller wheel 4 to perform real-time horizontal displacement, so as to adapt to intelligent adjustment.

[0039] In this embodiment, the front lining plate 5 and the rear lining plate 6 are L-shaped and have a centrally symmetrical structure. The front lining plate 5 and the rear lining plate 6 can be assembled into a rectangle.

[0040] Specifically, the front lining plate 5 and the rear lining plate 6 are assembled into a rectangular cube, which is convenient for group placement.

[0041] In this embodiment, the upper rolling wheel 3 and the upper driving wheel 1 are coaxially connected via a universal joint shaft.

[0042] Specifically, the displacement distance of the upper roller wheel 3 and the lower roller wheel 4 is effectively compensated through the transmission of the universal joint shaft.

[0043] Furthermore, the universal joint shaft can ensure that the upper roller wheel 3 and the lower roller wheel 4 can be adapted to the displacement without changing the rotation speed, and other transmission modes can also be used.

[0044] In this embodiment, a strip steel rolling line four-roller mill is used, taking the strip steel buckle head as an example:

[0045] The strip steel rolling line four-roller rolling mill comprises an upper driving wheel 1, an upper rolling wheel 3, a lower rolling wheel 4 and a lower driving wheel 2 which are arranged in sequence from top to bottom;

[0046] When the strip warps, stop the machine to replace the front liner 5 and the rear liner 6, so that the upper roller 3 is displaced 0.5-2.5mm relative to the lower roller 4 toward the input end of the strip to pre-compensate for the warping deviation;

[0047] When the strip buckles, the machine is stopped to replace the front lining plate 5 and the rear lining plate 6, so that the upper roller 3 is displaced 0.5-2.5mm away from the input end of the strip relative to the lower roller 4 to pre-compensate for the buckle deviation.

[0048] A method for adjusting the buckle head of a four-roller rolling mill of a strip steel rolling line, comprising:

[0049] The upper roller 3 and / or the lower roller 4 are adjusted by horizontal displacement so that the axis connecting the upper roller 3 and the lower roller 4 changes from vertical to inclined.

[0050] Specifically, by adjusting the relative positions of the upper rolling wheel 3 and the lower rolling wheel 4, the upper rolling wheel 3 or the lower rolling wheel 4 is contacted with the steel strip in sequence, so as to pre-compensate and correct the warping of the steel strip.

[0051] Furthermore, the method can also be combined with technical means such as cooling water regulation.

[0052] In this embodiment, when the strip is warped, the upper roller 3 is adjusted to be located at the side of the lower roller 4 close to the input end of the strip;

[0053] When the strip is buckled, the upper roller 3 is adjusted to be located at the side of the lower roller 4 away from the input end of the strip.

[0054] In this embodiment, the axis connecting the upper rolling wheel 3 and the lower rolling wheel 4 is located at the strip input end side of the axis connecting the upper driving wheel 1 and the lower driving wheel 2.

[0055] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A four-high rolling mill for strip steel rolling, characterized in that: include: upper drive wheel and lower drive wheel; An upper roller wheel, the upper roller wheel is connected to the upper driving wheel; A lower roller wheel is connected to the lower driving wheel, the lower roller wheel is located at the front side or the rear side directly below the upper roller wheel, and the wheel diameters of the lower roller wheel and the upper roller wheel are the same.

2. The strip steel rolling line four-high rolling mill according to claim 1, characterized in that: A rolling gap is provided between the lower driving wheel and the upper driving wheel.

3. The four-high rolling mill for strip steel rolling according to claim 1, characterized in that: The upper driving wheel is located directly above the lower driving wheel.

4. The four-high rolling mill for strip steel rolling according to claim 1, characterized in that: The axis connecting the upper roller and the lower roller is located at the feeding side of the axis connecting the upper drive wheel and the lower drive wheel.

5. The four-high rolling mill for strip steel rolling according to claim 1, characterized in that: It also includes a front lining plate and a rear lining plate, which are respectively detachably connected to the roll box of the four-roll mill of the strip rolling line, and the upper roll wheel and the lower roll wheel are arranged between the front lining plate and the rear lining plate.

6. The four-high rolling mill for strip steel rolling according to claim 5, characterized in that: The front lining plate and the rear lining plate are L-shaped and have a centrally symmetrical structure. The front lining plate and the rear lining plate can be assembled into a rectangle.

7. The strip steel rolling line four-high rolling mill according to claim 4, characterized in that: The upper roller wheel and the upper driving wheel are coaxially connected via a universal connecting shaft.

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