A method for reforming an existing rolling production line by adding an auxiliary rolling mill

Abstract

The application provides a transformation method of adding an auxiliary rolling mill to an existing rolling production line, and relates to the technical field of rolling production lines.The transformation method comprises the following steps: pretreating the existing rolling production line so that a space capable of accommodating an auxiliary rolling mill is formed between an F1 rolling mill and a finishing descaling machine of the rolling production line; installing a rack assembly of the auxiliary rolling mill to the lower part of the inlet side of the F1 rolling mill, wherein the rack assembly comprises a rack body, a roll gap adjusting device integrated into the rack body and a pair of rolling mill components; installing a rotating power device of the auxiliary rolling mill to the upper part of the inlet side of the F1 rolling mill, wherein the rotating power device comprises a speed reducer and a driving motor for driving the speed reducer to work; and connecting the speed reducer and the rolling mill components through a universal connecting shaft of the auxiliary rolling mill.The application saves the assembly time and improves the transformation efficiency.

Description

Technical Field

[0001] This invention relates to the field of rolling production line technology, and more specifically, to a method for modifying an existing rolling production line by adding an auxiliary rolling mill. Background Technology

[0002] Currently, some rolling production lines that have already been put into operation did not have an auxiliary rolling mill, also known as an F1E rolling mill, installed between the F1 rolling mill and the fine descaling mill during construction due to investment considerations or immature process considerations. This may result in suboptimal strip alignment and edge quality, thus requiring the existing rolling production lines to be upgraded.

[0003] However, when adding an F1E mill to some existing rolling production lines, the components of the F1E mill are usually installed on a support frame. Since the space between the F1 mill and the descaling machine in this type of production line is small, the assembly of the F1E mill is inconvenient, which seriously affects the efficiency of the transformation. Summary of the Invention

[0004] The problem addressed by this invention is how to improve the efficiency of retrofitting an existing rolling production line by adding an auxiliary rolling mill.

[0005] To address the above problems, this invention provides a method for modifying an existing rolling production line by adding an auxiliary rolling mill, comprising:

[0006] The existing rolling production line is pre-treated to ensure that there is space between the F1 mill and the descaling mill of the rolling production line that can accommodate the auxiliary mill.

[0007] The stand assembly of the auxiliary mill is installed on the lower part of the entrance side of the F1 mill. The stand assembly includes a stand body, a roll gap adjustment device and a pair of roll components integrated into the stand body.

[0008] The rotary power unit of the auxiliary rolling mill is installed on the upper part of the entrance side of the F1 rolling mill. The rotary power unit includes a reducer and a drive motor that drives the reducer.

[0009] The speed reducer and the roll assembly are connected via the universal joint shaft of the auxiliary mill.

[0010] Optionally, the pretreatment of the existing rolling production line includes:

[0011] Remove the inlet guide between the F1 rolling mill and the finishing descaling machine;

[0012] The archway of the F1 rolling mill is machined.

[0013] Optionally, after removing the inlet guide between the F1 rolling mill and the finishing descaling mill, the method further includes:

[0014] A bracket is installed at the stop groove where the inlet guide was originally installed on the F1 rolling mill, and the bracket is supported on the bottom end face of the frame body.

[0015] The lower cutting plate cylinder on the inlet side of the F1 rolling mill is installed on the bracket.

[0016] Optionally, the machining of the F1 rolling mill's gate includes:

[0017] The entrance side facade of the archway was leveled using an auxiliary rolling mill mounting surface.

[0018] After the auxiliary mill mounting surface is leveled, threaded holes are machined on the auxiliary mill mounting surface.

[0019] Optionally, before pre-treating the existing rolling production line, the process may also include:

[0020] A modification plan was developed based on the existing structure of the rolling production line and the auxiliary rolling mill.

[0021] Optionally, installing the stand assembly of the auxiliary mill on the lower part of the entrance side of the F1 mill includes:

[0022] The two ends of the frame body are respectively installed to the lower part of the archway through threaded connectors; after the frame body is installed, the roll gap adjustment device and a pair of roll components are installed on the frame body;

[0023] Alternatively, the roll gap adjustment device and the pair of roll components are installed on the frame body; after the roll gap adjustment device and the pair of roll components are installed, the two ends of the frame body are respectively installed on the lower part of the archway through threaded connectors.

[0024] Optionally, the frame body includes a first connecting part, a second connecting part, two upper crossbeams, and two lower crossbeams. The two upper crossbeams are arranged opposite to each other and spaced apart along a first calibration direction, and the two lower crossbeams are respectively arranged opposite to and spaced apart from the two upper crossbeams along a second calibration direction. The two upper crossbeams and the two lower crossbeams are respectively connected between the first connecting part and the second connecting part and together form an installation cavity. The roll gap adjustment device includes a drive cylinder and a sliding seat. The roll component includes an upper bearing seat and a lower bearing seat.

[0025] The process of mounting the roll gap adjustment device and the pair of roll components onto the frame body includes:

[0026] A first guide plate and a second guide plate are respectively installed on the upper crossbeam and the lower crossbeam;

[0027] The two drive cylinders are respectively installed in the first connecting part and the second connecting part, and the two sliding seats are placed in the mounting cavity and respectively connected to the telescopic ends of the two drive cylinders, and the first upper sliding plate and the first upper roller on the sliding seat are supported on the first guide plate; the first lower sliding plate and the first lower roller on the sliding seat are supported on the second guide plate;

[0028] The two roll components are placed in the mounting cavity, and then the upper bearing seat and lower bearing seat of each roll component are connected to the corresponding sliding seat, and the second upper slide plate and the second upper roller on the upper bearing seat are supported on the first guide plate; the second lower slide plate and the second lower roller of the lower bearing seat are supported on the second guide plate.

[0029] A pressure plate is installed on the upper crossbeam such that a portion of the pressure plate is positioned above the first upper roller and the second upper roller.

[0030] Optionally, the roll assembly further includes a roll; universal joints are provided at both ends of the universal joint shaft;

[0031] The connection of the speed reducer and the roll assembly via the universal joint shaft of the auxiliary mill includes:

[0032] Connect the universal joint at one end of the universal joint shaft to the corresponding output end of the reducer;

[0033] Adjust the orientation of the universal joint shaft and the position of the corresponding roller so that the universal joint head at the other end of the universal joint shaft is aligned with and connected to the corresponding roller.

[0034] Optionally, installing the rotary power unit of the auxiliary rolling mill on the upper part of the entrance side of the F1 rolling mill includes:

[0035] The two ends of the reducer are respectively installed on the upper part of the archway using threaded connectors; after the reducer is installed, the drive motor is installed on the reducer.

[0036] Alternatively, the drive motor can be installed on the reducer; after the drive motor is installed, both ends of the reducer can be installed on the upper part of the archway through threaded connectors.

[0037] Optionally, after connecting the reducer and the roll assembly via the universal joint shaft of the auxiliary mill, the method further includes:

[0038] Two connecting columns are installed between the reducer and the frame body so that the reducer, the frame body and the two connecting columns together form a frame structure.

[0039] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0040] When adding an auxiliary mill to an existing rolling production line, the existing rolling production line is first pre-treated to ensure that there is enough space between the F1 mill and the descaling mill to accommodate the auxiliary mill. Then, the frame assembly of the auxiliary mill is installed at the lower part of the entrance side of the F1 mill, and the rotary power unit of the auxiliary mill is installed at the upper part of the entrance side of the F1 mill. Since the frame assembly includes the frame body, a roll gap adjustment device integrated into the frame body, and a pair of roll components, and the rotary power unit includes a reducer and a drive motor that drives the reducer, the reducer and the roll components are finally connected through the universal joint shaft of the auxiliary mill to realize the assembly of the auxiliary mill. The modification method of the present invention can directly install the frame assembly and the rotary power unit of the auxiliary mill at the entrance side of the F1 mill respectively, without the need for a separate fixed frame for installation, and the assembly of the two can be carried out simultaneously, saving assembly time and thus improving the modification efficiency. Attached Figure Description

[0041] Figure 1 A schematic flowchart illustrating the modification method of adding an auxiliary rolling mill to an existing rolling production line according to an embodiment of the present invention;

[0042] Figure 2 This is a partial schematic diagram of the modified rolling production line according to an embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram of the auxiliary rolling mill according to an embodiment of the present invention;

[0044] Figure 4 This is a schematic diagram of the frame body according to an embodiment of the present invention.

[0045] Explanation of reference numerals in the attached figures:

[0046] 100. Auxiliary rolling mill; 101. Frame assembly; 1011. Frame body; 10111. First connecting part; 10112. Second connecting part; 10113. Upper crossbeam; 10114. Lower crossbeam; 1012. Roll gap adjustment device; 10121. Drive cylinder; 10122. Sliding seat; 1013. Roll assembly; 1014. Bracket; 102. Rotary power unit; 1021. Reducer; 1022. Drive motor; 103. Universal joint shaft; 104. Connecting column; 200. F1 rolling mill; 300. Fine descaling machine. Detailed Implementation

[0047] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0048] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0049] Furthermore, in the attached diagram, the Z-axis represents the vertical direction, that is, the up and down position, and the positive direction of the Z-axis (that is, the direction the arrow points on the Z-axis) indicates up, and the negative direction of the Z-axis indicates down; in the attached diagram, the X-axis represents the horizontal direction, that is, the left and right position, and the positive direction of the X-axis (that is, the direction the arrow points on the X-axis) indicates left, and the negative direction of the X-axis indicates right; in the attached diagram, the Y-axis represents the vertical direction, that is, the front and back position, and the positive direction of the Y-axis (that is, the direction the arrow points on the Y-axis) indicates front, and the negative direction of the Y-axis indicates back.

[0050] It should also be noted that the meanings of the aforementioned Z-axis, X-axis and Y-axis are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0051] like Figure 1 As shown in the figure, the method for modifying an existing rolling production line by adding an auxiliary rolling mill according to an embodiment of the present invention includes the following steps:

[0052] Pre-process the existing rolling production line to ensure that there is space between the F1 mill 200 and the descaling mill 300 of the rolling production line that can accommodate the auxiliary mill 100.

[0053] The stand assembly 101 of the auxiliary mill 100 is installed on the lower part of the entrance side of the F1 mill 200. The stand assembly 101 includes a stand body 1011, a roll gap adjustment device 1012 and a pair of roll components 1013 integrated into the stand body 1011.

[0054] The rotary power unit 102 of the auxiliary mill 100 is installed on the upper part of the entrance side of the F1 mill 200. The rotary power unit 102 includes a reducer 1021 and a drive motor 1022 that drives the reducer 1021.

[0055] The reducer 1021 is connected to the roll assembly 1013 via the universal joint shaft 103 of the auxiliary mill 100.

[0056] Thus, when adding an auxiliary mill 100 to an existing rolling production line, the existing rolling production line is first pre-treated to ensure that there is enough space between the F1 mill 200 and the descaling mill 300 to accommodate the auxiliary mill 100. Then, the stand assembly 101 of the auxiliary mill 100 is installed at the lower part of the entrance side of the F1 mill 200, and the rotary power unit 102 of the auxiliary mill 100 is installed at the upper part of the entrance side of the F1 mill 200. Since the stand assembly 101 includes a stand body 1011, a roll gap adjustment device 1012 integrated into the stand body 1011, and a pair of roll components 1013, and the rotary power unit 102 includes a reducer 1021 and a drive motor 1022 that drives the reducer 1021, the reducer 1021 and the roll components 1013 are finally connected via the universal joint shaft 103 of the auxiliary mill 100, thus achieving the assembly of the auxiliary mill 100. The final effect is as follows: Figure 2 As shown. The modification method of this embodiment can directly install the frame assembly 101 and the rotary power device 102 of the auxiliary rolling mill 100 on the inlet side of the F1 rolling mill 200, respectively, without the need for a separate fixing frame for installation, and the assembly of the two can be carried out simultaneously, saving assembly time and ultimately improving the modification efficiency.

[0057] Optionally, pretreatment of existing rolling production lines includes:

[0058] Remove the inlet guide between F1 rolling mill 200 and descaling mill 300;

[0059] The archway of F1 rolling mill 200 is machined.

[0060] It should be understood that in the existing rolling production line layout, an inlet guide is usually installed between the F1 rolling mill 200 and the fine descaling mill 300, which will affect the installation of the auxiliary rolling mill 100. Therefore, it needs to be removed. After the inlet guide is removed, the stop groove on the gate of the F1 rolling mill 200, which is used to cooperate with the inlet guide, will be idle.

[0061] Furthermore, after removing the inlet guide between the F1 rolling mill 200 and the finishing descaling mill 300, the following is also included:

[0062] Install bracket 1014 at the stop groove where the inlet guide was originally installed on the F1 rolling mill 200, and make bracket 1014 support the bottom end face of the frame body 1011.

[0063] Install the lower cutting plate cylinder on the inlet side of F1 mill 200 onto bracket 1014.

[0064] Specifically, a portion of the bracket 1014 is provided with a threaded hole corresponding to the threaded hole of the stop groove. After aligning the threaded hole of the bracket 1014 with the threaded hole of the stop groove, they can be connected by a threaded connector. At this time, the other portion of the bracket 1014 is supported on the bottom end face of the frame body 1011, thereby providing support for the frame body 1011.

[0065] Meanwhile, since the inlet guide has been removed, there is no place to install the original water-cutting plate cylinder. At this time, the water-cutting plate cylinder can be installed on bracket 1014.

[0066] It should be understood that the F1 mill 200 has two gates that are opposite to each other and spaced apart along the X-axis on the entrance side. In order to facilitate the installation of the frame assembly 101 and the rotary power unit 102 of the auxiliary mill 100, they need to be machined to meet the installation requirements.

[0067] Optionally, machining the archway of the F1 rolling mill 200 includes:

[0068] The auxiliary rolling mill installation surface of the entrance side facade of the archway was leveled.

[0069] After the auxiliary mill mounting surface is leveled, threaded holes are machined on the auxiliary mill mounting surface.

[0070] Specifically, when leveling the auxiliary rolling mill mounting surface on the entrance side facade of the archway, grinding can be performed using a grinding wheel to refine the mounting surfaces of the frame body and the reducer. Then, threaded holes are drilled on these mounting surfaces. This reduces the amount of processing required when modifying an existing rolling production line, making the modification easier and relatively inexpensive.

[0071] Optionally, before pre-processing the existing rolling production line, the process also includes: developing a modification plan based on the structure of the existing rolling production line and the structure of the auxiliary rolling mill 100.

[0072] In this embodiment, the modification scheme includes the dismantling method of the entrance guide, the bracket installation method, the leveling of the auxiliary rolling mill installation surface, the machining method, and the installation method of the auxiliary rolling mill 100, etc., which makes the entire modification process more planned and safer.

[0073] Optionally, mounting the stand assembly 101 of the auxiliary mill 100 to the lower part of the inlet side of the F1 mill 200 includes:

[0074] The two ends of the frame body 1011 are respectively installed to the lower part of the archway through threaded connectors; after the frame body 1011 is installed, the roll gap adjustment device 1012 and a pair of roll components 1013 are installed on the frame body 1011.

[0075] In this embodiment, the entire process can be carried out by a crane for lifting and positioning. After accurate positioning, the two ends of the frame body 1011 are installed at the bottom of the archway using threaded connectors.

[0076] In other embodiments, the roll gap adjustment device 1012 and a pair of roll components 1013 may be installed on the frame body 1011 first; after the roll gap adjustment device 1012 and the pair of roll components 1013 are installed, the two ends of the frame body 1011 are respectively installed on the lower part of the archway through threaded connectors. There is no limitation here, and it depends on the actual needs.

[0077] It should be understood that the frame body 1011 includes a first connecting part 10111, a second connecting part 10112, two upper crossbeams 10113 and two lower crossbeams 10114. The two upper crossbeams 10113 are arranged opposite to each other and spaced apart along a first calibration direction. The two lower crossbeams 10114 are respectively arranged opposite to the two upper crossbeams 10113 and spaced apart along a second calibration direction. The two upper crossbeams 10113 and the two lower crossbeams 10114 are respectively connected between the first connecting part 10111 and the second connecting part 10112 and enclose to form an installation cavity. The roll gap adjustment device 1012 includes a drive cylinder 10121 and a sliding seat 10122. The roll component 1013 includes an upper bearing seat and a lower bearing seat.

[0078] It is important to understand that the first calibration direction refers to: such as Figure 3 The direction of the Y-axis; the second calibration direction refers to: such as Figure 3 The direction of the Z-axis.

[0079] like Figure 4 As shown, the outer contour of the frame body 1011 is generally a cuboid structure. Two upper crossbeams 10113 are arranged opposite to each other and spaced apart along the X-axis, and two lower crossbeams 10114 are arranged opposite to the two upper crossbeams 10113 and spaced apart along the Z-axis. The two upper crossbeams 10113 and the two lower crossbeams 10114 are respectively connected between the first connecting part 10111 and the second connecting part 10112 and enclose to form an installation cavity. The roll component 1013 is slidably disposed in the installation cavity. That is to say, the roll of the roll component 1013 is arranged in the Y-axis direction directly opposite to the space between the upper crossbeams 10113 and the lower crossbeams 10114. In this way, it is convenient for the billet to pass through the frame body 1011 along the Y-axis direction and pass through the two roll components 1013 for rolling.

[0080] In other words, installing the roll gap adjustment device 1012 and a pair of roll components 1013 onto the frame body 1011 includes: installing a first guide plate and a second guide plate on the upper crossbeam 10113 and the lower crossbeam 10114 respectively; installing two drive cylinders 10121 on the first connecting part 10111 and the second connecting part 10112 respectively; and placing two sliding seats 10122 in the mounting cavity and connecting them to the telescopic ends of the two drive cylinders 10121 respectively, and supporting the first upper sliding plate and the first upper roller on the sliding seat 10122 on the first guide plate. The frame assembly 101 is installed on a second guide plate. Two roll components 1013 are placed in the mounting cavity, and then the upper and lower bearing seats of each roll component 1013 are connected to the corresponding slide plate 10122. The second upper slide plate and second upper roller on the upper bearing seat are supported on the first guide plate; the second lower slide plate and second lower roller on the lower bearing seat are supported on the second guide plate. A pressure plate is installed on the upper crossbeam 10113 so that part of the pressure plate is above the first and second upper rollers. This allows for rapid installation of the frame assembly 101.

[0081] It should be understood that the roll assembly 1013 also includes a roll, the upper and lower ends of which are rotatably mounted on an upper bearing housing and a lower bearing housing respectively via self-aligning roller bearings. Universal joints are provided at both ends of the universal joint shaft 103, and are connected to the output end of the corresponding reducer 1021 and the corresponding roll respectively via these universal joints.

[0082] In other words, connecting the reducer 1021 and the roll assembly 1013 via the universal joint 103 of the auxiliary mill 100 includes: connecting the universal joint at one end of the universal joint 103 to the corresponding output end of the reducer 1021; adjusting the orientation of the universal joint 103 and the position of the corresponding roll so that the universal joint at the other end of the universal joint 103 is aligned and connected with the corresponding roll. This achieves power transmission between the rotary power unit 102 and the roll assembly 1013.

[0083] Optionally, mounting the rotary power unit 102 of the auxiliary rolling mill 100 on the upper part of the inlet side of the F1 rolling mill 200 includes:

[0084] The two ends of the reducer 1021 are installed on the upper part of the archway through threaded connectors; after the reducer 1021 is installed, the drive motor 1022 is installed on the reducer 1021.

[0085] In this embodiment, the entire process can be carried out by a crane for lifting and positioning. After accurate positioning, the reducer 1021 is installed on the upper part of the archway through threaded connectors.

[0086] In other embodiments, the drive motor 1022 can be installed on the reducer 1021 first; after the drive motor 1022 is installed, both ends of the reducer 1021 are respectively installed on the upper part of the archway through threaded connectors. There are no restrictions here, and it depends on the actual needs.

[0087] Optionally, after connecting the reducer 1021 and the roll assembly 1013 via the universal joint 103 of the auxiliary mill 100, the method further includes installing two connecting columns 104 between the reducer 1021 and the frame body 1011, so that the reducer 1021, the frame body 1011, and the two connecting columns 104 together form a frame structure. This increases the overall strength of the auxiliary mill 100.

[0088] Readers should understand that in the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0089] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A method for modifying an existing rolling production line by adding an auxiliary rolling mill, characterized in that, include: The existing rolling production line is pretreated to provide space between the F1 mill (200) and the descaling mill (300) of the rolling production line to accommodate the auxiliary mill (100); The stand assembly (101) of the auxiliary mill (100) is installed on the lower part of the entrance side of the F1 mill (200). The stand assembly (101) includes a stand body (1011) and a roll gap adjustment device (1012) and a pair of roll components (1013) integrated into the stand body (1011). The rotary power unit (102) of the auxiliary mill (100) is installed on the upper part of the entrance side of the F1 mill (200). The rotary power unit (102) includes a reducer (1021) and a drive motor (1022) that drives the reducer (1021). The reducer (1021) and the roll assembly (1013) are connected via the universal joint shaft (103) of the auxiliary mill (100); The pretreatment of the existing rolling production line includes: removing the inlet guide between the F1 rolling mill (200) and the fine descaling machine (300); and machining the archway of the F1 rolling mill (200). After removing the inlet guide between the F1 mill (200) and the descaling machine, the method further includes: installing a bracket (1014) at the stop groove where the inlet guide was originally installed on the F1 mill (200), and supporting the bracket (1014) on the bottom end face of the frame body (1011); and installing the lower cutting water plate cylinder on the inlet side of the F1 mill (200) onto the bracket (1014). The machining of the archway of the F1 rolling mill (200) includes: leveling the auxiliary rolling mill mounting surface on the entrance side facade of the archway; and machining threaded holes on the auxiliary rolling mill mounting surface after the auxiliary rolling mill mounting surface is leveled.

2. The method for modifying an existing rolling production line by adding an auxiliary rolling mill according to claim 1, characterized in that, Before pretreatment of existing rolling production lines, the following is also included: A modification plan is developed based on the existing structure of the rolling production line and the structure of the auxiliary rolling mill (100).

3. The method for modifying an existing rolling production line by adding an auxiliary rolling mill according to claim 1, characterized in that, The installation of the frame assembly (101) of the auxiliary mill (100) on the lower part of the entrance side of the F1 mill (200) includes: The two ends of the frame body (1011) are respectively installed to the lower part of the archway through threaded connectors; after the frame body (1011) is installed, the roll gap adjustment device (1012) and a pair of roll components (1013) are installed on the frame body (1011). Alternatively, the roll gap adjustment device (1012) and a pair of the roll components (1013) are installed on the frame body (1011); after the roll gap adjustment device (1012) and the pair of the roll components (1013) are installed, the two ends of the frame body (1011) are respectively installed on the lower part of the archway through threaded connectors.

4. The method for modifying an existing rolling production line by adding an auxiliary rolling mill according to claim 3, characterized in that, The frame body (1011) includes a first connecting part (10111), a second connecting part (10112), two upper crossbeams (10113) and two lower crossbeams (10114). The two upper crossbeams (10113) are arranged opposite to each other and spaced apart along a first calibration direction. The two lower crossbeams (10114) are respectively arranged opposite to the two upper crossbeams (10113) and spaced apart along a second calibration direction. The two upper crossbeams (10113) and the two lower crossbeams (10114) are respectively connected between the first connecting part (10111) and the second connecting part (10112) and together form an installation cavity. The roll gap adjustment device (1012) includes a drive cylinder (10121) and a sliding seat (10122). The roll component (1013) includes an upper bearing seat and a lower bearing seat. The process of mounting the roll gap adjustment device (1012) and a pair of roll components (1013) onto the frame body (1011) includes: A first guide plate and a second guide plate are respectively installed on the upper crossbeam (10113) and the lower crossbeam (10114); Two drive cylinders (10121) are respectively installed on the first connecting part (10111) and the second connecting part (10112), and two sliding seats (10122) are placed in the mounting cavity and respectively connected to the telescopic ends of the two drive cylinders (10121), and the first upper sliding plate and the first upper roller on the sliding seat (10122) are supported on the first guide plate; the first lower sliding plate and the first lower roller on the sliding seat (10122) are supported on the second guide plate; Two of the roller components (1013) are placed in the mounting cavity, and then the upper bearing seat and lower bearing seat of each roller component (1013) are connected to the corresponding sliding seat (10122), and the second upper slide plate and the second upper roller on the upper bearing seat are supported on the first guide plate; the second lower slide plate and the second lower roller of the lower bearing seat are supported on the second guide plate. A pressure plate is installed on the upper crossbeam (10113) such that a portion of the pressure plate is positioned above the first upper roller and the second upper roller.

5. The method for modifying an existing rolling production line by adding an auxiliary rolling mill according to claim 4, characterized in that, The rolling mill assembly (1013) also includes a rolling mill; universal joints are provided at both ends of the universal joint shaft (103); The connection of the reducer (1021) and the roll assembly (1013) via the universal joint shaft (103) of the auxiliary mill (100) includes: Connect the universal connector at one end of the universal joint shaft (103) to the corresponding output end of the reducer (1021); Adjust the posture of the universal joint shaft (103) and the position of the corresponding roller so that the universal joint head at the other end of the universal joint shaft (103) is aligned and connected with the corresponding roller.

6. The method for modifying an existing rolling production line by adding an auxiliary rolling mill according to claim 1, characterized in that, The installation of the rotary power unit (102) of the auxiliary rolling mill (100) on the upper part of the entrance side of the F1 rolling mill (200) includes: The two ends of the reducer (1021) are respectively installed on the upper part of the archway through threaded connectors; after the reducer (1021) is installed, the drive motor (1022) is installed on the reducer (1021). Alternatively, the drive motor (1022) can be installed on the reducer (1021); after the drive motor (1022) is installed, both ends of the reducer (1021) can be installed on the upper part of the archway through threaded connectors.

7. The method for modifying an existing rolling production line by adding an auxiliary rolling mill according to claim 1, characterized in that, After connecting the reducer (1021) and the roll assembly (1013) via the universal joint shaft (103) of the auxiliary mill (100), the process further includes: Two connecting columns (104) are installed between the reducer (1021) and the frame body (1011) so that the reducer (1021), the frame body (1011) and the two connecting columns (104) together form a frame structure.

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