Work roll balancing and bending device and rolling mill system

Abstract

A work roll balancing and bending device, which is adapted for mounting on a frame (100), the device comprising an upper work roll assembly (1), a lower work roll assembly (2), a first balancing and bending mechanism (3) and a second balancing and bending mechanism (4), wherein the upper work roll assembly is disposed on the frame and can ascend and descend; the lower work roll assembly is arranged opposite the upper work roll assembly and is disposed on the frame; the first balancing and bending mechanism comprises a first lifting adjustment structure (31) and a connecting structure (32), the connecting structure being connected to both ends of the upper work roll assembly; and the second balancing and bending mechanism comprises a second lifting adjustment structure (41), the second lifting adjustment structure being connected to both ends of the lower work roll assembly. Further provided is a rolling mill system. By means of independent arrangement of the first balancing and bending mechanism and the second balancing and bending mechanism, the present bending device facilitates flexible adjustment of the gap size between an upper work roll and a lower work roll, thereby meeting the rolling requirements for plates of different thicknesses, and also enables independent balancing or bending adjustment of the upper work roll and the lower work roll.

Description

Work roll balancing and bending device and rolling mill system

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 202311148419.7 filed on September 7, 2023, and cites the contents disclosed in the above patent application as part of this application. Technical Field

[0003] The present application relates to the technical field of rolling mill equipment, and in particular to a working roll balancing bending device and a rolling mill system. Background Art

[0004] During the sheet metal production process, rolling mills are required to process the sheets. During operation, the work rolls on the rolling mill are subject to vibration, impact, or their own weight, which can cause the relative position of the two work rolls to shift, thereby changing the gapping between the two work rolls and reducing the rolled sheet quality. Therefore, to better control the rolled sheet quality, work roll balancing and bending adjustments are necessary. In the prior art, a balanced roll bending device is typically used to simultaneously adjust the upper and lower work rolls. The balanced roll bending device is installed between the upper and lower work rolls, and the upper and lower work rolls are pressure-adjusted using upper and lower hydraulic rods installed on the balanced roll bending device. However, due to the limited space between the upper and lower work rolls, the balanced roll bending device is typically small. This limits the telescopic adjustment range of the upper and lower hydraulic rods, preventing the upper and lower work rolls from reaching their maximum gapping, restricting the adjustment range of the gapping between the upper and lower work rolls and reducing the applicability of the rolling mill.

[0005] Therefore, ensuring work roll balance and roll bending between the upper and lower work rolls while increasing the adjustment range of the opening between the upper and lower work rolls has become a pressing technical problem. Therefore, the inventors, drawing on years of experience and practice in related industries, have proposed a rolling mill system that overcomes the shortcomings of the existing technology.

[0006] Summary of the Invention

[0007] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present application is to provide a working roll balancing and bending device and a rolling mill system, which are used to increase the adjustment range of the opening degree while ensuring that the working roll balancing and bending adjustment can be performed between the upper and lower working rolls.

[0008] The above-mentioned object of the present application can be achieved by adopting the following technical solutions. In the first aspect of the present application, an embodiment provides a work roll balance bending device for being arranged on a frame, comprising:

[0009] an upper working roll assembly, wherein the upper working roll assembly is liftably arranged on the frame;

[0010] a lower working roll assembly, the lower working roll assembly being arranged opposite to the upper working roll assembly and being arranged on the frame;

[0011] a first balanced roll bending mechanism, the first balanced roll bending mechanism comprising a first lifting and adjusting structure provided on the frame, and a connecting structure connected to the first lifting and adjusting structure, the connecting structure respectively connecting two ends of the upper work roll assembly;

[0012] The second balanced roll bending mechanism includes a second lifting and adjusting structure arranged on the frame, and the second lifting and adjusting structure is respectively connected to both ends of the lower working roll assembly.

[0013] An embodiment of a second aspect of the present application provides a rolling mill system, comprising:

[0014] frame;

[0015] The aforementioned work roll balance bending device;

[0016] an upper support roller assembly, the upper support roller assembly being liftably arranged on the frame;

[0017] A lower support roller assembly is provided on the frame, and the lower support roller assembly and the upper support roller assembly are relatively provided on both sides of the working roller balance bending device.

[0018] The technical solution of this application has the following significant beneficial effects:

[0019] When the work roll balance bending device described in this application is in use, the upper and lower work roll assemblies are positioned relative to each other on a frame, enabling the rolling of plates. Furthermore, the upper work roll assembly is arranged on the frame in a liftable manner, facilitating adjustment of the opening between the upper and lower work roll assemblies to better meet the rolling requirements of different plates, providing greater applicability.

[0020] Furthermore, the height position of the connecting structure can be adjusted using the first lifting and adjusting structure. By connecting the connecting structure to both ends of the upper work roll assembly, the upper work roll can be easily balanced or bent using the first lifting and adjusting structure. The second balanced bending mechanism can be connected to both ends of the lower work roll assembly, and the lower work roll can be easily balanced or bent using the second balanced bending mechanism. The present application provides for flexible adjustment of the opening between the upper and lower work rolls by independently arranging the first and second balanced bending mechanisms, thereby meeting the rolling requirements of plates of different thicknesses and independently balancing or bending the upper and lower work rolls. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes and proportional dimensions of the components in the drawings are merely illustrative and are used to help understand the present disclosure, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present disclosure. Those skilled in the art, under the guidance of the present disclosure, can select various possible shapes and proportional dimensions to implement the present disclosure according to specific circumstances.

[0023] FIG1 is a structural schematic diagram of the opening between the upper work roll assembly and the lower work roll assembly in this application;

[0024] FIG2 is a schematic diagram of a structure for balancing and bending roll adjustment between the upper work roll assembly and the lower work roll assembly in the present application;

[0025] FIG3 is a schematic diagram of the installation structure of an embodiment of the work roll balance bending device described in the present application;

[0026] FIG4 is a perspective structural diagram of an embodiment of the work roll balance bending device described in the present application;

[0027] FIG5 is a schematic diagram of the installation structure of an embodiment of the bump described in the present application;

[0028] FIG6 is a schematic diagram of the three-dimensional structure of an embodiment of the first hydraulic cylinder of the present application;

[0029] FIG7 is a schematic diagram of the three-dimensional structure of an embodiment of the bending roll stand described in the present application;

[0030] FIG8 is a schematic diagram of the three-dimensional structure of an embodiment of the first bearing seat of the present application;

[0031] FIG9 is a schematic diagram of the three-dimensional structure of an embodiment of the second hydraulic cylinder of the present application;

[0032] FIG10 is a schematic diagram of the three-dimensional structure of an embodiment of the second bearing seat of the present application;

[0033] FIG11 is a schematic diagram of the three-dimensional structure of an embodiment of the present application in which the first piston rod is hinged to the bending roll frame.

[0034] Reference numerals in the above drawings are as follows: 100, frame; 1, upper working roll assembly; 11, upper working roll; 12, first bearing seat; 121, first limiting shoulder; 2, lower working roll assembly; 21, lower working roll; 22, second bearing seat; 221, second limiting shoulder; 3, first balancing roll bending mechanism; 31, first lifting and adjusting structure; 311, first hydraulic cylinder; 312, first piston rod; 32, connecting structure; 321, bending roll frame; 3211, supporting block; 3212, vertical rod; 3213, top plate; 4, second balancing roll bending mechanism; 41, second lifting and adjusting structure; 411, second hydraulic cylinder; 412, second piston rod; 5, guide structure; 51, guide groove; 52, protrusion; 521, slide plate; 6, upper support roll assembly; 61, upper support roll; 62, third bearing seat; 7. Third lifting and adjusting structure; 71. Pressing device; 8. Lower support roller assembly. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0036] Please refer to Figures 1, 2 and 3. An embodiment of the first aspect of the present application provides a working roll balancing and bending device, which is used to be arranged on a frame 100. The working roll balancing and bending device at least includes an upper working roll assembly 1, a lower working roll assembly 2, a first balanced bending mechanism 3 and a second balanced bending mechanism 4. The upper working roll assembly 1 can be lifted and lowered on the frame 100; the lower working roll assembly 2 is arranged opposite to the upper working roll assembly 1 and is arranged on the frame 100; the first balanced bending mechanism 3 includes a first lifting and adjusting structure 31 arranged on the frame 100, and a connecting structure 32 connected to the first lifting and adjusting structure 31, and the connecting structure 32 is respectively connected to the two ends of the upper working roll assembly 1; the second balanced bending mechanism 4 includes a second lifting and adjusting structure 41 arranged on the frame 100, and the second lifting and adjusting structure 41 is respectively connected to the two ends of the lower working roll assembly 2.

[0037] Generally speaking, when the work roll balance bending device is in use, as shown in the embodiment of Figure 4, the upper work roll assembly 1 and the lower work roll assembly 2 are arranged relative to each other on the frame 100, and plates are rolled by the upper work roll assembly 1 and the lower work roll assembly 2. Furthermore, the upper work roll assembly 1 is arranged on the frame 100 in a liftable manner, thereby facilitating adjustment of the opening between the upper work roll assembly 1 and the lower work roll assembly 2 to better meet the rolling requirements of different plates, thereby providing greater applicability.

[0038] Furthermore, the height position of the connecting structure 32 can be adjusted by using the first lifting and adjusting structure 31. By connecting the connecting structure 32 to both ends of the upper working roll assembly 1, the upper working roll 11 can be easily balanced or bent by using the first lifting and adjusting structure 31. Moreover, the second balanced bending roll mechanism 4 can be connected to both ends of the lower working roll assembly 2. The second balanced bending roll mechanism 4 can be easily balanced or bent by using the lower working roll 21. The present application facilitates adjustment of the opening between the upper working roll 11 and the lower working roll 21 by independently arranging the first balanced bending roll mechanism 3 and the second balanced bending roll mechanism 4, thereby meeting the rolling needs of plates of different thicknesses and independently balancing or bending the upper and lower working rolls 21.

[0039] In a specific embodiment, as shown in Figures 4 and 5, the frame 100 is configured as a frame structure, and the upper working roll assembly 1 and the lower working roll assembly 2 are relatively arranged in the area clamped by the frame 100. Preferably, the frame 100 is configured as a rectangular frame structure.

[0040] Of course, designers can adjust the specific structure of the rack 100 according to usage requirements, for example, setting the rack 100 roughly to a door shape or an L shape, etc., and no specific limitation is made here.

[0041] In an embodiment of the present application, as shown in the embodiments of Figures 4 and 8, the upper working roll assembly 1 includes an upper working roll 11 and first bearing seats 12 respectively arranged at both ends of the upper working roll 11, and the connecting structure 32 connects the two first bearing seats 12 respectively.

[0042] By connecting both ends of the upper working roll 11 to the first bearing seat 12 , the upper working roll 11 can rotate freely, thereby facilitating the rolling process of the plate.

[0043] In an embodiment of the present application, as shown in the embodiments of Figures 4 and 7, the connection structure 32 includes bending roller frames 321 respectively arranged on both sides of each first bearing seat 12, and each bending roller frame 321 is connected to the first lifting adjustment structure 31.

[0044] By respectively arranging the bending roller frames 321 on both sides of the first bearing seat 12, the bending roller frames 321 on both sides can cooperatively support the first bearing seat 12, thereby improving the installation stability.

[0045] Furthermore, as shown in the embodiments of Figures 3, 4, and 6, the first lifting and adjusting structure 31 includes a plurality of first hydraulic cylinders 311 provided on the frame 100. The plurality of first hydraulic cylinders 311 are provided in a one-to-one correspondence with each bending roll frame 321. The first hydraulic cylinders 311 have first piston rods 312, which are hingedly connected to the corresponding bending roll frame 321. In the example of Figure 4, a first bearing seat 12 is provided at each end of the upper work roll 11, and a bending roll frame 321 is provided on opposite sides of each first bearing seat 12. Each bending roll frame 321 is hingedly connected to a first piston rod 312.

[0046] The height position of the first piston rod 312 can be adjusted by the first hydraulic cylinder 311 to drive the bending roll frame 321 to rise or fall, and then the bending roll frame 321 can synchronously drive the first bearing seat 12 to rise or fall to balance or bend the upper working roll 11.

[0047] In the embodiment shown in FIG11 , the first piston rod 312 is hingedly connected to the roll bending frame 321, thereby enabling a certain degree of rotational adjustment between the first piston rod 312 and the corresponding roll bending frame 321. When the roll bending frame 321 encounters an impact, the roll bending frame 321 and the first piston rod 312 can rotate relative to each other, thereby preventing the impact from being directly transmitted between the roll bending frame 321 and the first piston rod 312, thereby weakening the destructive effect of the impact.

[0048] The two bending roll stands 321 located on the same side of the upper work roll 11 are arranged as a group, and the two bending roll stands 321 in the same group need to be adjusted synchronously. In addition, the two sets of bending roll stands 321 located at both ends of the upper work roll 11 also need to be adjusted synchronously to synchronously balance or bend the two ends of the upper work roll 11, thereby ensuring the uniformity of the adjustment of the upper work roll 11.

[0049] Of course, in other embodiments, designers can replace the first hydraulic cylinder 311 with other lifting devices, such as a pneumatic cylinder, etc. according to usage needs, and no specific limitation is made here.

[0050] Preferably, the first hydraulic cylinder 311 is disposed at the top of the frame 100, and each first piston rod 312 is disposed vertically along the height direction. By disposing the first hydraulic cylinder 311 at the top of the frame 100 and disposing each bending roll stand 321 on either side of the first bearing seat 12, the first hydraulic cylinder 311 and the bending roll stand 321 do not affect the opening between the upper and lower work rolls 21 during use, thereby enabling a larger opening range between the upper and lower work rolls 21, meeting the rolling requirements of plates of different thicknesses and providing better applicability.

[0051] Moreover, by arranging the first hydraulic cylinder 311 at the top of the frame 100, each first hydraulic cylinder 311 is also kept away from the opening between the upper and lower working rolls 21. Thus, when the upper and lower working rolls 21 roll high-temperature plates, the high temperature on the plates is difficult to be transmitted to the first hydraulic cylinder 311, thereby improving the working environment of the first hydraulic cylinder 311, reducing the equipment maintenance frequency of the first hydraulic cylinder 311, and extending the service life of the first hydraulic cylinder 311.

[0052] In an embodiment of the present application, as shown in Figures 4, 5 and 7, a guide structure 5 is provided between the bending roll frame 321 and the frame 100. The guide structure 5 includes a guide groove 51 provided on the bending roll frame 321 and a protrusion 52 provided on the frame 100. The protrusion 52 is extended along the height direction of the frame 100, and the bending roll frame 321 is lifted and lowered on the protrusion 52 through the guide groove 51.

[0053] By arranging a guide structure 5 between the bending roll frame 321 and the frame 100 , the bending roll frame 321 can only move in the height direction by utilizing the guide structure 5 , thereby improving the movement stability of the bending roll frame 321 .

[0054] Furthermore, to reduce friction between the protrusion 52 and the guide groove 51 and improve sliding performance, a sliding plate 521 can be provided on the protrusion 52. The smooth surface of the sliding plate 521 allows the inner wall of the guide groove 51 to contact the smooth surface of the sliding plate 521, thereby reducing friction and improving sliding performance. Designers can adjust the specific structure of the sliding plate 521 according to actual needs, for example, by placing multiple sliding plates 521 on the outer surface of the protrusion 52, and this is not a specific limitation.

[0055] Furthermore, by making the protrusion 52 contact the guide groove 51, the protrusion 52 has a certain load-bearing capacity. The protrusion 52 can transmit various external forces applied to the bending roll frame 321 to the protrusion 52, and then transmit the external forces to the frame 100, completing the force transmission. Through force transmission, the bending roll frame 321 reduces the deformation caused by external forces, reduces the number of maintenance times of the bending roll frame 321, and extends its service life.

[0056] In an embodiment of the present application, as shown in FIG7 and FIG8 , the bending roll frame 321 further includes a support block 3211 , and the bending roll frame 321 is connected to the lower end surface of the corresponding first bearing seat 12 through the support block 3211 .

[0057] By arranging a support block 3211 on the bending roll frame 321 , the support block 3211 can form surface contact with the lower end surface of the first bearing seat 12 , thereby improving the support stability of the support block 3211 on the first bearing seat 12 .

[0058] When the first piston rod 312 of the first hydraulic cylinder 311 drives the support block 3211 to rise, the support block 3211 can apply an upward force to the first bearing seat 12, thereby applying a bending moment on the upper working roll 11 to adjust the bending amount of the upper working roll 11.

[0059] In a specific embodiment, the lower end surface of the first bearing seat 12 is provided with two first limiting shoulders 121 , the two first limiting shoulders 121 are symmetrically arranged about the upper working roll 11 , and the support block 3211 is connected to the corresponding first limiting shoulders 121 .

[0060] Of course, in other embodiments, designers can adjust the specific structure of the support block 3211 according to usage requirements, and no specific limitation is made here.

[0061] In an embodiment of the present application, as shown in the embodiment of Figure 7, the bending roller frame 321 includes two vertical rods 3212 arranged at intervals, and a top plate 3213 connecting the two vertical rods 3212, the top plate 3213 is hinged to the first piston rod 312 of the first hydraulic cylinder 311, and the support block 3211 is respectively connected to the bottom of the two vertical rods 3212, and the two vertical rods 3212, the top plate 3213 and the support block 3211 are clamped to form a guide groove 51.

[0062] During use, the inner sidewalls of the two vertical rods 3212 slidably fit against the sidewalls of the protrusion 52. Preferably, the sidewalls of the protrusion 52 are provided with slides 521, and the inner sidewalls of the two vertical rods 3212 slidably engage with the corresponding slides 521. Designers can adjust the height of the guide slots 51 according to actual needs and are not specifically limited here.

[0063] In an embodiment of the present application, as shown in the embodiments of Figures 4 and 10, the lower working roll assembly 2 includes a lower working roll 21 and second bearing seats 22 respectively arranged at both ends of the lower working roll 21, and the second lifting and adjusting structure 41 is respectively connected to the two second bearing seats 22.

[0064] By connecting both ends of the lower working roll 21 to the second bearing seat 22 , the lower working roll 21 can rotate freely, thereby cooperating with the upper working roll 11 to roll the plate.

[0065] In an embodiment of the present application, as shown in the embodiments of Figures 9 and 10, the second lifting and adjusting structure 41 includes a second hydraulic cylinder 411 respectively arranged on both sides of each second bearing seat 22, the second hydraulic cylinder 411 is connected to the frame 100, and the second hydraulic cylinder 411 has at least one second piston rod 412, and the second piston rod 412 is connected to the upper end surface of the corresponding second bearing seat 22.

[0066] The two second hydraulic cylinders 411 on the same side of the lower work roll 21 are arranged as a group, and the two second hydraulic cylinders 411 in the same group need to be adjusted synchronously. In addition, the two groups of second hydraulic cylinders 411 located at both ends of the lower work roll 21 also need to be adjusted synchronously to perform balancing or roll bending adjustments on both ends of the lower work roll 21, ensuring the uniformity of adjustment of the lower work roll 21.

[0067] As can be seen from the foregoing, the first hydraulic cylinder 311 can be used to bend the upper work roll 11. Consequently, the first hydraulic cylinder 311 and the second hydraulic cylinder 411 work together to apply a bending torque to the upper and lower work rolls 11 and 21, thereby adjusting the shape and structure of the rolling gap between the upper and lower work rolls 21 for optimal plate rolling. Designers can adjust the bending amount of the upper and lower work rolls 21 based on actual needs, with no specific limitations imposed herein. Furthermore, the first hydraulic cylinder 311 and the second hydraulic cylinder 411 work together to balance the upper and lower work rolls 21, further improving the rolling quality of the upper and lower work rolls 21.

[0068] Of course, in other embodiments, designers can replace the second hydraulic cylinder 411 with other lifting devices, such as a pneumatic cylinder, etc. according to usage needs, and no specific limitation is made here.

[0069] In an embodiment of the present application, the upper end surface of the second bearing seat 22 is provided with two second limiting shoulders 221 , the two second limiting shoulders 221 are symmetrically arranged about the lower working roll 21 , and the second piston rod 412 is connected to the corresponding second limiting shoulders 221 .

[0070] By providing the second limiting shoulder 221 on the second bearing seat 22, the end of the second piston rod 412 can be vertically connected to the second limiting shoulder 221. When the second piston rod 412 of the second hydraulic cylinder 411 moves downward, the second piston rod 412 can apply downward pressure to the second limiting shoulder 221, thereby applying a bending torque to the lower work roll 21 to adjust the bending amount of the lower work roll 21.

[0071] Please refer to Figure 3. An embodiment of the second aspect of the present application provides a rolling mill system, which includes a frame 100, the aforementioned working roll balancing and bending device, an upper support roll assembly 6 and a lower support roll assembly 8. The upper support roll assembly 6 is arranged on the frame 100 in a liftable manner; the lower support roll assembly 8 is arranged on the frame 100, and the lower support roll assembly 8 and the upper support roll assembly 6 are relatively arranged on both sides of the working roll balancing and bending device.

[0072] The specific structure, operating principle, and beneficial effects of the work roll balancing and bending device are the same as those described in the first embodiment and are not further described here. By utilizing the work roll balancing and bending device of the first embodiment, the rolling mill system not only ensures work roll balancing and bending adjustment between the upper and lower work rolls 21 but also increases the adjustment range of the opening degree, thereby better meeting the rolling needs of different plates and having greater applicability.

[0073] In an embodiment of the present application, the rolling mill system further includes a third lifting and adjusting structure 7 , which is respectively connected to both ends of the upper support roller assembly 6 .

[0074] The height position of the upper support roller assembly 6 can be adjusted through the third lifting adjustment structure 7, so that the upper support roller assembly 6 can abut against the upper working roller 11 to better support the upper working roller 11, reducing the deformation of the upper working roller 11 during the rolling process and improving the rolling quality.

[0075] In a specific embodiment, the third lifting and adjusting structure 7 includes two pressing devices 71 arranged opposite to each other on the frame 100 , and the two pressing devices 71 are respectively connected to two ends of the upper support roller assembly 6 .

[0076] By connecting the two down-pressing devices 71 to the two ends of the upper support roller assembly 6 respectively, the two down-pressing devices 71 can cooperatively adjust the height position of the upper support roller assembly 6, thereby improving the stability and uniformity of the height adjustment of the upper support roller assembly 6, so that the upper support roller assembly 6 can better abut against the upper working roller assembly 1.

[0077] Furthermore, the upper support roller assembly 6 includes an upper support roller 61 and a third bearing seat 62 respectively arranged at both ends of the upper support roller 61. The upper support roller 61 is arranged opposite to the upper working roller 11 of the working roller balance bending roller device, and the third bearing seat 62 is connected to the corresponding down-pressing device 71.

[0078] In an embodiment of the present application, the lower support roller assembly 8 includes a lower support roller and a fourth bearing seat respectively arranged at both ends of the lower support roller. The lower support roller is arranged opposite to the lower working roller 21 of the working roller balance bending roller device, and the fourth bearing seat is connected to the frame 100.

[0079] The lower support roll can be fixed on the frame 100 through the fourth bearing seat, and the lower support roll is brought into contact with the lower working roll 21, so that the lower support roll can support the lower working roll 21, reducing the deformation of the lower working roll 21 during the rolling process and improving the rolling quality.

[0080] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for all purposes. The term "essentially consisting of..." describing a combination should include the identified 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 herein also contemplates an embodiment that is essentially composed of these elements, ingredients, parts or steps. By using the term "may", it is intended to illustrate that any attribute described that "may" include 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 "an" used to describe an element, ingredient, part or step is not intended 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 or similar parts between the embodiments can be referred to each other. The above embodiments are only for illustrating the technical concepts and features of this application. Their purpose is to enable people familiar with this technology to understand the content of this application and implement it accordingly, and they cannot be used to limit the scope of protection of this application. Any equivalent changes or modifications made according to the spirit of this application should be included in the scope of protection of this application.

Claims

1. A working roll balance bending device, used to be arranged on a frame, wherein: include: An upper working roll assembly, wherein the upper working roll assembly is liftably arranged on the frame; A lower working roll assembly, wherein the lower working roll assembly is arranged opposite to the upper working roll assembly and is arranged on the frame; a first balanced roll bending mechanism, the first balanced roll bending mechanism comprising a first lifting and lowering adjustment structure arranged on the frame, and a connecting structure connected to the first lifting and lowering adjustment structure, wherein the connecting structure is respectively connected to two ends of the upper working roll assembly; The second balanced roll bending mechanism comprises a second lifting and lowering adjustment structure arranged on the frame, and the second lifting and lowering adjustment structure is respectively connected to two ends of the lower working roll assembly.

2. The working roll balance bending device according to claim 1, wherein: The upper working roll assembly includes an upper working roll and first bearing seats respectively arranged at two ends of the upper working roll, and the connecting structure respectively connects the two first bearing seats.

3. The working roll balance bending device according to claim 2, wherein: The connection structure includes bending roll frames respectively arranged on both sides of each of the first bearing seats, and each of the bending roll frames is connected to the first lifting and lowering adjustment structure.

4. The working roll balance bending device according to claim 3, wherein: The first lifting and adjusting structure includes a plurality of first hydraulic cylinders arranged on the frame, and the plurality of first hydraulic cylinders are arranged in one-to-one correspondence with each bending roll frame. The first hydraulic cylinder has a first piston rod, and the first piston rod is hinged to the corresponding bending roll frame.

5. The working roll balance bending device according to claim 4, wherein: A guide structure is provided between the bending roll frame and the frame, and the guide structure includes a guide groove arranged on the bending roll frame and a protrusion arranged on the frame, the protrusion is extended along the height direction of the frame, and the bending roll frame is lifted and lowered on the protrusion through the guide groove.

6. The working roll balance bending device according to claim 5, wherein: The bending roll frame also includes a supporting block, and the bending roll frame is connected to the lower end surface of the corresponding first bearing seat through the supporting block.

7. The working roll balance bending device according to claim 6, wherein: The lower end surface of the first bearing seat is provided with two first limit shoulders, the two first limit shoulders are symmetrically arranged with respect to the upper working roll, and the support block is connected with the corresponding first limit shoulders.

8. The working roll balance bending device according to claim 6, wherein: The bending roll frame includes two vertical rods arranged at intervals, and a top plate connecting the two vertical rods, the top plate is hinged to the first piston rod of the first hydraulic cylinder, the support block is respectively connected to the bottom of the two vertical rods, and the guide groove is clamped between the two vertical rods, the top plate and the support block.

9. The working roll balance bending device according to claim 1, wherein: The lower working roll assembly includes a lower working roll and second bearing seats respectively arranged at two ends of the lower working roll, and the second lifting and lowering adjustment structure is respectively connected to the two second bearing seats.

10. The working roll balance bending device according to claim 9, wherein: The second lifting and adjusting structure includes second hydraulic cylinders respectively arranged on both sides of each second bearing seat, the second hydraulic cylinder is connected to the frame, the second hydraulic cylinder has at least one second piston rod, and the second piston rod is connected to the upper end surface of the corresponding second bearing seat.

11. The working roll balance bending device according to claim 10, wherein: The upper end surface of the second bearing seat is provided with two second limit shoulders, the two second limit shoulders are symmetrically arranged with respect to the lower working roll, and the second piston rod is connected with the corresponding second limit shoulders.

12. A rolling mill system, wherein: include: frame; The working roll balancing and bending device according to any one of claims 1 to 11; An upper support roller assembly, wherein the upper support roller assembly is liftably arranged on the frame; A lower support roller assembly is arranged on the frame, and the lower support roller assembly and the upper support roller assembly are arranged relatively on both sides of the working roller balance bending device.

13. The rolling mill system according to claim 12, wherein: The rolling mill system also includes a third lifting and adjusting structure, and the third lifting and adjusting structure is respectively connected to both ends of the upper supporting roller assembly.

14. The rolling mill system according to claim 13, wherein: The third lifting and lowering adjustment structure includes two pressing devices arranged relatively on the frame, and the two pressing devices are respectively connected to two ends of the upper supporting roller assembly.

15. The rolling mill system according to claim 14, wherein: The upper support roller assembly includes an upper support roller and third bearing seats respectively arranged at both ends of the upper support roller. The upper support roller is arranged opposite to the upper working roller of the working roller balance bending roller device, and the third bearing seat is connected to the corresponding pressing device.

16. The rolling mill system of claim 14, wherein: The lower support roller assembly includes a lower support roller and fourth bearing seats respectively arranged at both ends of the lower support roller. The lower support roller is arranged opposite to the lower working roller of the working roller balance bending roller device, and the fourth bearing seat is connected to the frame.

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