Guide structure and rolling mill guide and guard system

Abstract

The invention provides a guiding structure and a rolling mill guiding and guarding system, and relates to the technical field of guiding and guarding devices.The guiding structure comprises a main guiding block and an auxiliary guiding assembly, the main guiding block extends in the height direction and comprises a supporting part and a clamping part arranged on the supporting part in a protruding mode, and the supporting part is detachably connected with a rolling mill housing; the auxiliary guiding assembly comprises a plurality of auxiliary guiding blocks arranged in the height direction, the auxiliary guiding blocks are detachably connected with the supporting part and are opposite to the clamping part, and guiding grooves are formed between the auxiliary guiding blocks and the clamping part and used for guiding the guiding and guarding device. Guiding and supporting effects can be provided for the guiding and guarding device through the guiding structure, lateral displacement and vibration of the guiding and guarding device are prevented, and therefore accurate guiding and stable supporting of a steel plate are achieved through the guiding and guarding device. Moreover, after the auxiliary guide block is damaged, the damaged auxiliary guide block can be conveniently and timely disassembled, replaced and maintained, and the maintenance time is greatly shortened.

Description

Technical Field

[0001] The invention relates to the technical field of guide devices, and in particular to a guide structure and a rolling mill guide system. Background Art

[0002] In the field of medium and thick plate mills, the guide device is a key component to ensure the stability and accuracy of the steel plate during the rolling process. The main functions of the guide device include guiding and stabilizing the movement of the steel plate, ensuring that the steel plate accurately enters the rolling mill and controlling its position and tension during the rolling process, thereby preventing deviation and warping. The existing guide device is generally composed of a guide plate, a guide roller and an adjustment mechanism, which accurately guides the steel plate into the rolling mill and controls its position to ensure the smooth progress of the rolling process. The guide structure is an important component of the guide device. The guide structure is generally fixed directly to the mill arch by bolts. The guide structure is used to provide strong support for the guide device to prevent the lateral displacement and vibration of the guide device, thereby achieving accurate guidance and stable support of the steel plate. However, in hot strip production lines, especially in rough rolling reversible mills, due to uneven heating of the billet and excessive reduction during rolling, the slab often has excessive warping, which in turn causes the billet to hit the guide device. In this case, the instantaneous impact force will act on the guide structure through the guide device, causing the bolts connecting the guide structure to be elongated or broken, thereby reducing the guiding accuracy of the guide structure. This will not only cause lateral displacement and vibration of the guide device, but also cause a rolling mill shutdown accident. Since the existing guide structure is generally an integrated setting, the guide structure needs to be disassembled as a whole when repairing the guide structure, which increases the maintenance workload and reduces the maintenance efficiency. Therefore, how to improve the guide structure to improve the maintenance efficiency has become a technical problem that needs to be solved urgently. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a guide structure and a rolling mill guide system for improving the maintenance efficiency.

[0004] The above-mentioned object of the present invention can be achieved by adopting the following technical solutions. The present invention provides a guide structure for being arranged on a rolling mill arch, comprising:

[0005] A main guide block, the main guide block is extended in the height direction, the main guide block comprises a support portion and a clamping portion protruding on the support portion, and the support portion is detachably connected to the rolling mill arch;

[0006] A secondary guide assembly, the secondary guide assembly includes a plurality of secondary guide blocks arranged along the height direction, the plurality of secondary guide blocks are detachably connected to the support portion and are arranged opposite to the clamping portion, a guide groove is formed between the secondary guide block and the clamping portion, and the guide groove is used to guide the guide device.

[0007] In a preferred embodiment of the present invention, a first positioning structure is provided between the support portion and the rolling mill arch, and the first positioning structure is used to limit the support portion in a horizontal direction.

[0008] In a preferred embodiment of the present invention, the first positioning structure includes a first positioning key arranged on the rolling mill arch, and a first slot arranged on the end surface of the support portion facing the rolling mill arch, the first positioning key is extended along the height direction and arranged on the rolling mill arch, and the support portion is matched and connected with the first positioning key through the first slot.

[0009] In a preferred embodiment of the present invention, a second positioning structure is provided between the support portion and the auxiliary guide block, and the second positioning structure is used to limit the auxiliary guide block in a horizontal direction.

[0010] In a preferred embodiment of the present invention, the second positioning structure includes a second slot arranged on the end face of the support portion facing the auxiliary guide block, and a second positioning key arranged on the auxiliary guide block, the second slot extending along the height direction on the support portion, the auxiliary guide block matchingly connected with the second slot through the second positioning key, and the maximum load of the second positioning key is less than the maximum load of the first positioning key.

[0011] In a preferred embodiment of the present invention, the guide structure also includes a slide plate assembly, which includes a first slide plate arranged on the end surface of the clamping portion facing the auxiliary guide block, and a second slide plate arranged on the end surface of the auxiliary guide block facing the clamping portion, and the guide groove is formed between the first slide plate and the second slide plate.

[0012] In a preferred embodiment of the present invention, the projection of the guide groove along the height direction is rectangular.

[0013] In a preferred embodiment of the present invention, the guide structure further includes a plurality of first fasteners, and the support portion is detachably connected to the rolling mill arch via the first fasteners.

[0014] In a preferred embodiment of the present invention, the guide structure further includes a plurality of second fasteners, and the auxiliary guide block is detachably connected to the support portion via the second fasteners.

[0015] The present invention also provides a rolling mill guide system, comprising a rolling mill arch, a guide device, and at least one of the aforementioned guide structures, wherein the guide structure is arranged on the rolling mill arch, and the guide device is adjustably arranged on the rolling mill arch through the guide structure.

[0016] The technical solution of the present invention has the following significant beneficial effects:

[0017] When the guide structure described in the present invention is used, the guide structure is set on the rolling mill arch. The guide groove of the guide structure can provide guidance and support for the guide device, so that the guide device can be adjustably set on the rolling mill arch along the height direction, preventing the guide device from lateral displacement and vibration, ensuring the stability of the use of the guide device, and thus using the guide device to achieve accurate guidance and stable support of the steel plate.

[0018] Specifically, the guide structure includes a main guide block and a plurality of auxiliary guide blocks. The support portion of the main guide block is arranged on the mill arch along the height direction, and the support portion is detachably connected to the mill arch. In addition, the plurality of auxiliary guide blocks are arranged along the height direction and detachably arranged on the support portion. A guide groove for installing the guide device is formed between the auxiliary guide block and the clamping portion of the main guide block. The side walls of the guide groove can provide guidance and support, and prevent the guide device from lateral displacement and vibration.

[0019] Furthermore, when the guide device is subjected to a large impact and deflects, the force generated instantly will be applied to the guide structure. By making the maximum load of the auxiliary guide block smaller than the maximum load of the main guide block, when the lateral force borne by the guide structure is very large, the auxiliary guide block is damaged first, while the main guide block remains intact. Since the auxiliary guide block is detachably connected to the main guide block, after the auxiliary guide block is damaged, it is convenient to promptly remove the damaged auxiliary guide block and replace and repair it, which greatly shortens the maintenance time of the guide device being stuck in the guide structure due to the warping of the slab, thereby significantly improving the maintenance efficiency. The guide structure of the present invention has the advantages of simple and reliable structure, low cost and easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0022] Figure 1A schematic diagram of a top view of an embodiment of the guide structure of the present invention;

[0023] Figure 2 A schematic structural diagram of an embodiment of the first positioning structure and the second positioning structure of the present invention;

[0024] Figure 3 A schematic side view of the structure of an embodiment of the auxiliary guide assembly of the present invention;

[0025] Figure 4 The figure is a schematic diagram of the installation structure of an embodiment of the guide structure and the rolling mill arch of the present invention.

[0026] Reference numerals of the above drawings:

[0027] 10. Guiding structure;

[0028] 20. Rolling mill arch;

[0029] 30. Guide groove;

[0030] 100. Main guide block; 110. Support portion; 120. Clamping portion;

[0031] 200, auxiliary guide assembly; 210, auxiliary guide block;

[0032] 300, first positioning structure; 310, first positioning key; 320, first card slot;

[0033] 400, second positioning structure; 410, second positioning key; 420, second card slot;

[0034] 500, a slide plate assembly; 510, a first slide plate; 520, a second slide plate;

[0035] 600, a first fastener;

[0036] 700. Second fastener. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Implementation Method 1

[0039] Please refer to Figures 1 to 4As shown, a guide structure 10 is provided in an embodiment of the present invention, which is used to be arranged on a rolling mill arch 20. The guide structure 10 includes a main guide block 100 and an auxiliary guide assembly 200. The main guide block 100 is extended along the height direction. The main guide block 100 includes a support portion 110 and a clamping portion 120 protruding from the support portion 110, and the support portion 110 is detachably connected to the rolling mill arch 20; the auxiliary guide assembly 200 includes a plurality of auxiliary guide blocks 210 arranged along the height direction, the plurality of auxiliary guide blocks 210 are detachably connected to the support portion 110 and are arranged opposite to the clamping portion 120, a guide groove 30 is formed between the auxiliary guide block 210 and the clamping portion 120, and the guide groove 30 is used to guide the guide device.

[0040] In general, when the guide structure 10 is used, the guide structure 10 is set on the mill arch 20, and the guide groove 30 of the guide structure 10 can provide guidance and support for the guide device, so that the guide device can be adjusted along the height direction on the mill arch 20, preventing the guide device from lateral displacement and vibration, ensuring the use stability of the guide device, and thus using the guide device to achieve accurate guidance and stable support of the steel plate. Figure 3 The height direction of the guide structure 10 is shown in FIG.

[0041] Specifically, the guide structure 10 includes a main guide block 100 and a plurality of auxiliary guide blocks 210. The support portion 110 of the main guide block 100 is disposed on the mill arch 20 along the height direction, and the support portion 110 is detachably connected to the mill arch 20. In addition, the plurality of auxiliary guide blocks 210 are arranged along the height direction and detachably disposed on the support portion 110. A guide groove 30 for installing the guide device is formed between the auxiliary guide block 210 and the clamping portion 120 of the main guide block 100. The side walls of the guide groove 30 can provide guidance and support, and prevent the guide device from lateral displacement and vibration.

[0042] When the guide device is deflected by a large impact, the instantaneous force will be applied to the guide structure 10. By making the maximum load of the auxiliary guide block 210 smaller than the maximum load of the main guide block 100, when the lateral force borne by the guide structure 10 is very large, the auxiliary guide block 210 will be damaged first, while the main guide block 100 will remain intact.

[0043] Since the auxiliary guide block 210 is detachably connected to the main guide block 100, after the auxiliary guide block 210 is damaged, it is convenient to promptly remove the damaged auxiliary guide block 210 and replace it for repair, which greatly shortens the repair time of the guide device being stuck in the guide structure 10 due to the warping of the slab, thereby significantly improving the maintenance efficiency. The guide structure 10 of the present invention has the advantages of simple and reliable structure, low cost and easy maintenance.

[0044] In the embodiment of the present invention, the designer can adjust the specific number of auxiliary guide blocks 210 according to the use requirements, and no specific limitation is made here. For example, the auxiliary guide blocks 210 can be provided with two, three, four or more. Preferably, as Figure 3 In the illustrated embodiment, three auxiliary guide blocks 210 are provided.

[0045] In an embodiment of the present invention, Figure 2 and Figure 3 In the embodiment, the support portion 110 is substantially plate-shaped and extends in the height direction. In addition, the clamping portion 120 is protruded on one side edge of the support portion 110 , so that a guide groove 30 can be formed between the clamping portion 120 and the auxiliary guide block 210 .

[0046] The designer can adjust the specific setting mode of the clamping portion 120 according to the use requirements, and no specific limitation is made here. Preferably, the clamping portion 120 and the support portion 110 are integrally arranged. By integrally arranging the clamping portion 120 and the support portion 110, the structural strength of the clamping portion 120 and the support portion 110 is improved.

[0047] In an embodiment of the present invention, a first positioning structure 300 is provided between the support portion 110 and the rolling mill housing 20 , and the first positioning structure 300 is used to limit the support portion 110 in a horizontal direction.

[0048] Specifically, Figure 2 In the embodiment shown, the first positioning structure 300 includes a first positioning key 310 arranged on the rolling mill arch 20, and a first slot 320 arranged on the end surface of the support portion 110 facing the rolling mill arch 20. The first positioning key 310 is extended along the height direction and is arranged on the rolling mill arch 20. The support portion 110 is matched and connected with the first positioning key 310 through the first slot 320.

[0049] The first positioning key 310 and the first slot 320 cooperate to ensure the alignment accuracy between the support portion 110 and the rolling mill arch 20, thereby ensuring the accuracy of the guide device during installation and reducing installation errors.

[0050] Designers can adjust the shape of the first positioning key 310 and the first slot 320 according to the use requirements, and no specific restrictions are imposed here. Preferably, the first positioning key 310 is arranged in a rectangular parallelepiped shape, and the first slot 320 is arranged to match the first positioning key 310 .

[0051] The side walls of the first positioning key 310 can limit the first slot 320 in the lateral direction, thereby preventing the main guide block 100 from vibrating in the lateral direction, and thus improving the installation stability of the main guide block 100 on the rolling mill arch 20 .

[0052] The present invention effectively prevents the displacement of the support part 110 in the horizontal direction through the first positioning structure 300, ensures that the guide device always remains stable during operation, and avoids the problem of steel plate offset or jamming caused by horizontal displacement. In addition, the installation and maintenance process of the first positioning structure 300 is more convenient, which helps to improve the reliability and manufacturing efficiency of the guide structure 10, so that it can be better applied to complex working conditions in medium and thick plate rolling mills and hot strip production lines.

[0053] In an embodiment of the present invention, a second positioning structure 400 is provided between the support portion 110 and the auxiliary guide block 210 , and the second positioning structure 400 is used to limit the auxiliary guide block 210 in a horizontal direction.

[0054] Specifically, Figure 2 In the embodiment shown, the second positioning structure 400 includes a second slot 420 disposed on the end surface of the support portion 110 facing the auxiliary guide block 210, and a second positioning key 410 disposed on the auxiliary guide block 210. Figure 3 In the embodiment shown, the second slot 420 is extended along the height direction on the support portion 110 , the auxiliary guide block 210 is matched with the second slot 420 through the second positioning key 410 , and the maximum load of the second positioning key 410 is less than the maximum load of the first positioning key 310 .

[0055] Furthermore, the auxiliary guide block 210 is provided with a plurality of second positioning keys 410, each of which is respectively provided in a corresponding second slot 420. The second slot 420 is matched with the second positioning key 410 to achieve accurate horizontal limiting, thereby preventing the auxiliary guide block 210 from shifting in the horizontal direction.

[0056] Furthermore, since the maximum load of the second positioning key 410 is smaller than the maximum load of the first positioning key 310, when the guide device is subjected to a large impact and shifts, the second positioning key 410 is damaged first, rather than the first positioning key 310, thereby protecting the main guide block 100 and reducing the risk of damage to key components.

[0057] Since the second positioning key 410 of the auxiliary guide block 210 is damaged first, when the guide structure 10 needs to be repaired, the operator can quickly disassemble and replace the damaged auxiliary guide block 210 without worrying about the main guide block 100, thereby greatly shortening the maintenance time and improving the maintenance efficiency.

[0058] The designer can adjust the shape of the second positioning key 410 and the second slot 420 according to the use requirements, and no specific limitation is made here. Preferably, the second positioning key 410 is arranged in a rectangular parallelepiped shape, and the second slot 420 is arranged to match the second positioning key 410.

[0059] The side walls of the second slot 420 can limit the second positioning key 410 in the lateral direction, thereby preventing the auxiliary guide block 210 from vibrating in the lateral direction, thereby improving the installation stability of the auxiliary guide block 210 on the main guide block 100 .

[0060] In an embodiment of the present invention, Figure 2 In the illustrated embodiment, the guide structure 10 also includes a slide plate assembly 500, which includes a first slide plate 510 arranged on the end surface of the clamping portion 120 facing the auxiliary guide block 210, and a second slide plate 520 arranged on the end surface of the auxiliary guide block 210 facing the clamping portion 120, and a guide groove 30 is formed between the first slide plate 510 and the second slide plate 520.

[0061] Specifically, the first slide plate 510 and the second slide plate 520 can be made of low-friction material, which can significantly reduce friction and wear, thereby extending the service life of the slide plate assembly 500 and reducing maintenance frequency and cost.

[0062] Furthermore, the guide groove 30 formed between the first slide plate 510 and the second slide plate 520 can ensure precise guidance, so that the guide device always maintains linear motion during the sliding process, avoiding deviation and shaking.

[0063] Furthermore, the slide plate assembly 500 can be designed in a modular manner so as to be easy to disassemble and replace. When the slide plate assembly 500 is worn or damaged, the operator can quickly replace a new slide plate without disassembling the entire guide structure 10.

[0064] The designer can adjust the specific shape and structure of the first slide plate 510 and the second slide plate 520 according to the use requirements, and no specific limitation is made here. Preferably, the first slide plate 510 and the second slide plate 520 are arranged relative to each other, so that the first slide plate 510 and the second slide plate 520 can be evenly abutted on the guide device, thereby improving the uniformity of the guide.

[0065] In the embodiment of the present invention, the projection of the guide groove 30 along the height direction is rectangular. Specifically, the end surface of the clamping portion 120 facing the auxiliary guide block 210 is rectangular, the first slide plate 510 is also rectangular, the end surface of the auxiliary guide block 210 facing the clamping portion 120 is rectangular, and the second slide plate 520 is also rectangular. In addition, the first slide plate 510 and the second slide plate 520 are arranged opposite to each other, thereby forming a rectangular guide groove 30.

[0066] Of course, in other feasible embodiments, designers can adjust the specific shape of the guide groove 30 according to usage requirements, and no specific limitation is made here.

[0067] In an embodiment of the present invention, the guide structure 10 further includes a plurality of first fasteners 600 , and the support portion 110 and the rolling mill housing 20 are detachably connected via the first fasteners 600 .

[0068] Specifically, the first fastener 600 is a bolt, and the first fastener 600 is arranged perpendicular to the support portion 110. A plurality of first mounting through holes are provided on the support portion 110, and the plurality of first mounting through holes are arranged at intervals, and the bolts can pass through the first mounting through holes and connect the mill arch 20, so that the main guide block 100 is detachably connected to the mill arch 20.

[0069] By using bolts to detachably connect the support part 110 and the mill arch 20, the installation and removal of the support part 110 are more flexible and convenient, and the operator can quickly install or remove it as needed, thereby improving work efficiency. The use of multiple first fasteners 600 ensures multi-point fixation between the support part 110 and the mill arch 20, and enhances the stability and reliability of the connection.

[0070] Furthermore, when the support part 110 needs to be replaced or maintained, there is no need to dismantle the entire rolling mill arch 20, and the operation can be completed by simply loosening the first fastener 600, thereby reducing downtime and improving maintenance efficiency.

[0071] In an embodiment of the present invention, the guide structure 10 further includes a plurality of second fasteners 700 , and the auxiliary guide block 210 and the support portion 110 are detachably connected via the second fasteners 700 .

[0072] Specifically, the second fastener 700 is a bolt, and the second fastener 700 is arranged perpendicular to the auxiliary guide block 210. A plurality of second mounting through holes are provided on the auxiliary guide block 210, and the plurality of second mounting through holes are arranged at intervals, and the bolts can pass through the second mounting through holes and connect the support portion 110, so that the auxiliary guide block 210 is detachably connected to the main guide block 100.

[0073] By using bolts to detachably connect the auxiliary guide block 210 and the support portion 110, the installation and removal of the auxiliary guide block 210 are more flexible and convenient, and the operator can quickly install or remove it as needed, thereby improving work efficiency. The use of multiple second fasteners 700 ensures multi-point fixation between the auxiliary guide block 210 and the support portion 110, thereby enhancing the stability and reliability of the connection.

[0074] Furthermore, when the auxiliary guide block 210 needs to be replaced or maintained, there is no need to disassemble the entire support portion 110 , and the operation can be completed by simply loosening the second fastener 700 , thereby reducing downtime and improving maintenance efficiency.

[0075] Implementation Method 2

[0076] Please refer to Figure 4 In an embodiment of the present invention, a rolling mill guide and guard system is provided, which includes a rolling mill arch 20, a guide and guard device, and at least one guide structure 10 described in the first embodiment, wherein the guide structure 10 is arranged on the rolling mill arch 20, and the guide and guard device is adjustably arranged on the rolling mill arch 20 through the guide structure 10.

[0077] The specific structure, working principle and beneficial effects of the guide structure 10 are the same as those in the first embodiment, and will not be described in detail here. By using the guide structure 10, the rolling mill guide system can complete the removal and replacement of the auxiliary guide block 210 in a very short time when the auxiliary guide block 210 is damaged, thereby reducing equipment downtime and improving maintenance efficiency.

[0078] In the embodiment of the present invention, the designer can adjust the specific setting mode of the guide structure 10 according to the use requirements, and no specific limitation is made here.

[0079] For example, the guide structure 10 is installed on both sides of the rolling mill arch 20 on the transmission side and the operating side. The double-sided installation ensures that the guide device is evenly stressed on both sides, avoids deviation and shaking caused by uneven stress on one side, and improves the stability of the system. In addition, the double-sided installation of the guide structure 10 allows the guide device to be accurately adjusted on both sides, ensuring the symmetry and consistency of the guide device in the horizontal direction.

[0080] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for various purposes. The term "consisting essentially of ... " describing a combination should include determined elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel features of the combination. The use of the terms "comprising" or "including" to describe the combination of elements, ingredients, parts or steps here also contemplates the implementation method consisting essentially of these elements, ingredients, parts or steps. Here, by using the term "may", it is intended to illustrate that any attribute described that "may" includes is optional. Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "one" used to describe an element, ingredient, part or step is not said to exclude other elements, ingredients, parts or steps.

[0081] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referred to each other. The above embodiments are only for illustrating the technical concept and features of the present invention. The purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A guide structure, used to be arranged on a rolling mill arch, characterized in that: include: A main guide block, the main guide block is extended in the height direction, the main guide block comprises a support portion and a clamping portion protruding on the support portion, and the support portion is detachably connected to the rolling mill arch; A secondary guide assembly, the secondary guide assembly includes a plurality of secondary guide blocks arranged along the height direction, the plurality of secondary guide blocks are detachably connected to the support portion and are arranged opposite to the clamping portion, a guide groove is formed between the secondary guide block and the clamping portion, and the guide groove is used to guide the guide device.

2. The guide structure according to claim 1, characterized in that: A first positioning structure is provided between the support portion and the rolling mill arch, and the first positioning structure is used to limit the support portion in a horizontal direction.

3. The guide structure according to claim 2, characterized in that: The first positioning structure includes a first positioning key arranged on the rolling mill arch, and a first slot arranged on the end surface of the support part facing the rolling mill arch. The first positioning key is extended along the height direction on the rolling mill arch, and the support part is matched and connected with the first positioning key through the first slot.

4. The guide structure according to claim 3, characterized in that: A second positioning structure is provided between the support portion and the auxiliary guide block, and the second positioning structure is used for limiting the auxiliary guide block in a horizontal direction.

5. The guide structure according to claim 4, characterized in that: The second positioning structure includes a second slot arranged on the end face of the support portion facing the auxiliary guide block, and a second positioning key arranged on the auxiliary guide block, the second slot extending along the height direction on the support portion, the auxiliary guide block matchingly connected with the second slot through the second positioning key, and the maximum load of the second positioning key is less than the maximum load of the first positioning key.

6. The guide structure according to claim 1, characterized in that: The guide structure also includes a slide plate assembly, which includes a first slide plate arranged on the end surface of the clamping portion facing the auxiliary guide block, and a second slide plate arranged on the end surface of the auxiliary guide block facing the clamping portion, and the guide groove is formed between the first slide plate and the second slide plate.

7. The guide structure according to claim 6, characterized in that: The projection of the guide groove along the height direction is rectangular.

8. The guide structure according to claim 1, characterized in that: The guide structure further comprises a plurality of first fasteners, and the support portion is detachably connected to the rolling mill arch via the first fasteners.

9. The guide structure according to claim 8, characterized in that: The guide structure further includes a plurality of second fasteners, and the auxiliary guide block is detachably connected to the support portion through the second fasteners.

10. A rolling mill guide system, characterized in that: It comprises a rolling mill arch, a guide device, and at least one guide structure as claimed in any one of claims 1 to 9, wherein the guide structure is arranged on the rolling mill arch, and the guide device is adjustably arranged on the rolling mill arch through the guide structure.

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