Embedded hydraulic pressure vibration suppression device for bearing seat of working roll of plate and strip rolling mill and use method of embedded hydraulic pressure vibration suppression device

Abstract

The invention discloses an embedded hydraulic pressure vibration suppression device for a working roll bearing seat of a plate and strip rolling mill and a using method, and belongs to the technical field of metal rolling equipment and vibration control of the plate and strip rolling mill. The embedded hydraulic pressure vibration suppression device comprises a rack housing, a working roll baffle device, a working roll balance roll bending cylinder, an embedded vibration suppression hydraulic device and the working roll bearing seat; the working roll balance bending cylinder is mounted between a rack housing and a working roll bearing seat, the vibration suppression hydraulic device is mounted at a grooving part of a cylinder body of the working roll balance bending cylinder in an embedded manner and mainly comprises a wear-resistant lining plate and a hydraulic device, the wear-resistant lining plate is fixedly connected onto the cylinder body and a cylinder block of the working roll balance bending cylinder, and the hydraulic device is fixedly connected onto the wear-resistant lining plate. A wear-resistant push rod of the hydraulic device can slide along an arc-shaped groove in the middle of the wear-resistant lining plate to dynamically compensate a mounting gap between the working roll bearing seat and the working roll balance roll bending cylinder. According to the invention, the dynamic characteristics of the vibration system are changed by actively adjusting the gap and applying the lateral hydraulic thrust without transforming a rack housing, so that the effect of actively inhibiting the vibration of the rolling mill is achieved.

Description

Technical Field

[0001] This invention belongs to the field of metal rolling equipment and vibration control technology for strip mills, specifically relating to an embedded hydraulic vibration device for work roll bearing housings in strip mills and its usage method. Background Technology

[0002] In the steel industry's strip rolling production, hot-rolled strip steel accounts for over 80% of the total strip steel output and is a core raw material for industries such as automobiles, machinery manufacturing, and construction. With the surge in market demand for high-end, thin-gauge, high-strength strip steel, steel companies are actively upgrading their rolling processes. However, the structural characteristics of traditional strip mills reveal a 0.5-2mm installation gap between the work roll bearing housing and the work roll balance bending cylinder to facilitate roll changing during mill operation. This gap originates from assembly process requirements and wear during rolling, and under high-speed rolling or variable-gauge rolling conditions, it easily induces strong nonlinear horizontal vibrations. However, under the real-time roll gap effect of the AGC system, the mill structure is constrained by the high-frequency reciprocating motion of the upper roll system. This installation gap cannot be completely eliminated; efforts can only be made to reduce and suppress its impact during the rolling process.

[0003] Existing vibration suppression technologies have significant shortcomings: passive dampers can only function at specific frequencies, making it difficult to adapt to the dynamic changes in the rolling process and occupying considerable installation space; traditional hydraulic balance cylinders only provide vertical support and have no ability to compensate for horizontal gaps; the "rolling mill vibration suppression device" disclosed in Chinese patent CN111054761A fills the gaps through a movable wedge-shaped slide plate, but the slide plate has low adjustment precision and cannot be dynamically adjusted in real time according to vibration, resulting in limited vibration suppression effect. In addition, some technologies require large-scale modifications to the rolling mill stand arch, which is not only costly but also leads to excessive downtime of the rolling mill, affecting production continuity.

[0004] Therefore, there is an urgent need to develop a technical solution that can achieve dynamic gap compensation and active vibration suppression without modifying the frame archway, in order to solve the problem of abnormal vibration caused by gaps in traditional rolling mills and promote the development of the strip rolling industry towards high efficiency, precision and stability. Summary of the Invention

[0005] Due to the roll changing installation requirements of traditional rolling mills, the gap between the work roll bearing housing and the frame arch column cannot be completely eliminated, resulting in an "unavoidable" side gap. To solve the problem of abnormal vibration caused by the gap, this invention provides an embedded hydraulic vibration suppression device and its usage method for the work roll bearing housing of a strip rolling mill. It does not require modification of the frame arch and can achieve dynamic gap compensation and active vibration suppression.

[0006] This invention relates to an embedded hydraulic vibration device for work roll bearing housings in strip mills and its usage method. The technical solution adopted is as follows: An embedded hydraulic vibration damping device for a strip mill work roll bearing seat includes a frame arch, a work roll baffle device, a work roll balancing bending cylinder, an embedded vibration damping hydraulic device, and a work roll bearing seat. The device is characterized in that: the work roll balancing bending cylinder is installed between the frame arch and the work roll bearing seat; the cylinder body of the work roll balancing bending cylinder has a groove on its side wall, and an oil supply pipe communicating with the groove is provided inside the cylinder body; the embedded vibration damping hydraulic device includes a wear-resistant liner and a hydraulic device; the wear-resistant liner is fixedly connected to the cylinder body and cylinder block of the work roll balancing bending cylinder, and an arc-shaped groove is provided in the middle of the wear-resistant liner; the hydraulic device is embedded in the groove of the bending cylinder body, and the wear-resistant push rod of the hydraulic device can slide along the arc-shaped groove to dynamically compensate for the installation gap between the work roll bearing seat and the work roll balancing bending cylinder; the work roll baffle device is fixedly connected between the frame arch and the work roll balancing bending cylinder for fixing the work roll balancing bending cylinder.

[0007] A further improvement of the above-mentioned technical solution of the present invention is that: the hydraulic device includes components such as a wear-resistant push rod, a piston, a guide ring, a sealing ring, a hydraulic cylinder head, and a hydraulic cylinder body that can be installed separately; wherein, the hydraulic cylinder body is fixedly connected to the bottom of the groove, the hydraulic cylinder head is fixedly connected to the hydraulic cylinder body, and a gasket is sandwiched between the hydraulic cylinder head and the wear-resistant liner; the piston is located in the hydraulic cylinder body, and the rear end of the piston is fitted with a guide ring and a sealing ring, and the front end of the piston is fixedly connected to the wear-resistant push rod.

[0008] A further improvement of the above technical solution of the present invention is that: both the wear-resistant liner and the wear-resistant push rod are made of high manganese steel, the maximum push distance of the wear-resistant push rod is 10mm, and its pushing direction is perpendicular to the pressing adjustment direction of the AGC hydraulic system, which is much larger than the installation gap between the work roll bearing seat and the work roll balance bending cylinder, thus meeting the gap compensation requirements.

[0009] A further improvement of the above technical solution of the present invention is that: the working roller baffle device includes a pressure plate guide rail, a pressure plate and a working roller baffle; wherein, the pressure plate guide rail is fixedly mounted on the cylinder body of the working roller balance bending cylinder, the pressure plate is slidably assembled between the pressure plate guide rail, and the working roller baffle is fixedly connected to the frame arch and abuts against the pressure plate.

[0010] A method for using an embedded hydraulic vibration damping device in the work roll bearing housing of a strip rolling mill, comprising the following steps: S1. System initialization: After the vibration damping hydraulic device is installed in the gap between the working roll bearing seat of the strip mill, the online monitoring system of the mill is matched to display the vibration status and rolling process parameters to the user in a visual way. S2. Device initialization: When the strip mill is running unloaded and waiting for inspection, the piston is brought into contact with the bottom of the hydraulic cylinder, and oil supply is not started. Ensure that the wear-resistant push rod is in the initial position. S3. Dynamic Gap Adjustment: When the strip mill is working, the mill's AGC hydraulic system receives a pressing command. At this time, under a large pressing amount, the mill will generate large vibrations. The existence of gap will cause the horizontal vibration to amplify. At this time, the embedded vibration damping hydraulic device receives a start command and begins to dynamically adjust the gap. The hydraulic system supplies oil, and the piston in the embedded vibration damping hydraulic device begins to push outward, driving the wear-resistant push rod forward to make it contact the work roll bearing seat. This dynamically compensates for the installation gap between the work roll bearing seat and the work roll balance bending cylinder, suppressing the horizontal vibration of the mill. S4. Dynamic Pressure Adjustment: After the wear-resistant push rod contacts the work roll bearing seat, the hydraulic system begins to dynamically adjust. It adjusts the oil pressure according to the vibration condition, provides side thrust to actively affect the vibration system. According to the signal feedback from the monitoring system, when the vibration amplitude suddenly increases, the hydraulic control increases the side thrust, and vice versa. The dynamic adjustment allows the rolling mill to return to a more stable rolling state. S5. Vibration damping device retraction: After rolling is completed, when the continuous rolling mill needs to perform roll changing or maintenance rest, the embedded vibration damping hydraulic device receives the end command, automatically depressurizes, the hydraulic system begins to discharge oil, the piston begins to retract, and the wear-resistant push rod retracts to the initial position, ending the control work of the embedded vibration damping hydraulic device. The embedded vibration damping hydraulic device will start working again when the next rolling starts.

[0011] Due to the adoption of the above technical solution, the technical progress achieved by this invention includes: This invention embeds the vibration damping device within a groove on the side wall of the work roll balance bending cylinder, eliminating the need for modifications to the mill stand and reducing the required mill space. It can be directly adapted to existing mills, lowering modification costs and simplifying its widespread application. Furthermore, the hydraulic vibration damping device is easy to install and adjust. The dynamically adjustable lateral thrust output by the hydraulic vibration damping device compensates in real-time for the assembly gap between the work roll bearing housing and the work roll balance bending cylinder, effectively altering the dynamic characteristics of the vibration system.

[0012] This invention uses a vibration monitoring module to collect data in real time and remotely control the vibration suppression device to dynamically adjust the hydraulic pressure and push rod displacement, which can reduce the horizontal vibration amplitude of the rolling mill and thus improve the product qualification rate.

[0013] The wear-resistant liner and wear-resistant push rod of this invention are made of high manganese steel, which can improve service life compared with traditional wear-resistant parts. Each component is assembled independently, and there is no need to completely disassemble the device when replacing it. The hydraulic piston and wear-resistant push rod of the hydraulic liner are fixed with screws, resulting in less friction in the slide and easy relative movement, which does not affect replacement.

[0014] This invention takes into account factors such as adjusting the reduction amount of the work roll system. The pushing direction of the wear-resistant push rod of the hydraulic vibration device is perpendicular to the reduction adjustment direction of the AGC hydraulic system, which can basically ensure that the hydraulic vibration device will not be damaged during the rolling process of strip.

[0015] Meanwhile, the present invention adds a new oil supply pipeline to the hydraulic compression vibration device, which facilitates real-time adjustment and does not damage the oil supply circuit of the original hydraulic system of the strip mill. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the installation location of the embedded hydraulic vibration device for the work roll bearing seat of the strip mill of the present invention; Figure 2 This is a schematic diagram of the installation location of the embedded hydraulic vibration device for the work roll bearing seat of the strip mill of the present invention. Figure 1 A magnified view of a section at point I; Figure 3 This is a schematic diagram of the working roll balance bending cylinder structure of the embedded hydraulic vibration device for the working roll bearing seat of the strip mill of the present invention. Figure 4 This is a schematic diagram of the embedded hydraulic damping device of the embedded hydraulic damping device for the strip mill work roll bearing seat of the present invention; Figure 5 This is a cross-sectional structural schematic diagram of the embedded hydraulic damping device of the embedded hydraulic damping device for the strip mill work roll bearing seat of the present invention; Figure 6 This is a cross-sectional view of the hydraulic compression vibration device embedded in the work roll bearing seat of the strip mill of the present invention. Figure 5 Enlarged view of a section at point II; Figure 7 This is a flowchart illustrating the usage method of the embedded hydraulic vibration device for the work roll bearing seat of a strip mill according to the present invention.

[0017] In the attached diagram: 1 - Frame archway; 2-Work roll baffle device; 201-Pressure plate guide rail; 202-Pressure plate; 203-Work roll baffle; 3-Work roll balance bending cylinder; 301-Cylinder body; 302-Cylinder block; 303-Cylinder cover; 304-Piston; 305-Cylinder bottom; 310-Groogging; 4-Embedded vibration damping hydraulic device; 401-Wear-resistant liner; 402-Wear-resistant push rod; 403-Piston; 404-Guide ring; 405-Sealing ring; 406-Gasket; 407-Hydraulic cylinder head; 408-Hydraulic cylinder body; 409-First screw; 410-Second screw; 411-Third screw; 412-Fourth screw; 420-Piston slide push area; 5-Working roll bearing housing; 7-AGC hydraulic system. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. To avoid unnecessary conceptual confusion, descriptions of well-known structures and technologies are omitted in the following description.

[0019] Example 1 Taking the 1580 four-high hot continuous rolling mill as an example, such as Figures 1-6 As shown, this embodiment provides an embedded hydraulic vibration damping device for the work roll bearing seat of a strip mill, including a frame archway 1, a work roll baffle device 2, a work roll balance bending cylinder 3, an embedded vibration damping hydraulic device 4, and a work roll bearing seat 5.

[0020] like Figure 1 and Figure 2 As shown, in this embodiment, the embedded vibration damping hydraulic device 4 and the working roll balance bending cylinder 3 are installed together between the working roll bearing seat 5 and the frame archway 1, and are fixedly connected to the side wall of the frame archway column. The working roll balance bending cylinder 3 is fixed to the side wall of the frame archway 1 through the working roll baffle device 2.

[0021] like Figure 3 As shown, the work roll balancing bending cylinder 3 installed between the work roll bearing housing 5 and the mill stand 1 column mainly includes a bending cylinder body 301, a cylinder block 302, a cylinder cover 303, a piston 304, and a cylinder bottom 305. The bending cylinder block 302 is installed on the mill stand 1 column by screws. The bending cylinder block 302 and the cylinder body 301 are fixed together by screws according to the installation position. The bending cylinder cover 303, piston 304, and cylinder bottom 305 are installed in the corresponding positions in the cylinder body 301 and the cylinder block 302, and O-rings, guide rings, and sealing rings are installed to increase the sealing of the cylinder body oil cavity and reduce friction and wear. A groove 310 is cut on the side wall of the work roll balancing bending cylinder 3 cylinder body 301 between the work roll bearing housing 5 and the mill stand 1, and the embedded vibration damping hydraulic device 4 is fixedly installed in the groove 310. Then, the side of the frame archway 1 and the side of the working roll balance bending cylinder 3 are fixed by installing the working roll baffle device 2. The working roll baffle device 2 mainly includes pressure plate guide rail 201, pressure plate 202 and working roll baffle 203. The pressure plate guide rail 201 is installed on the cylinder body 301 of the bending cylinder by bolts. The pressure plate 202 and the working roll baffle 203 are assembled together. The pressure plate 202 is installed between the two pressure plate guide rails 201. The working roll baffle 203 is installed on the frame archway 1 by bolts.

[0022] Continue to refer to Figure 3A groove 310 is cut on the side wall of the work roll balance bending cylinder 3 3 between the work roll bearing seat 5 and the mill frame 1, and an embedded vibration damping hydraulic device 4 is installed. The diameter of the circular groove is 640mm and the depth is 120mm. An oil supply pipe connected to the groove is designed inside the bending cylinder 301. This design only modifies the structure of the work roll balance bending cylinder 3, does not change the structure of the mill frame 1, and does not increase the mill space size, which can meet the relevant requirements of the actual rolling site.

[0023] like Figures 4-6 As shown, the embedded vibration damping hydraulic device 4 includes a wear-resistant liner 401 and a hydraulic device. The wear-resistant liner 401 is made of wear-resistant material. Its upper and lower parts are fixed to the cylinder block 302 of the work roll balance bending cylinder 3 by 10 first screws 409, and its middle part is fixed to the cylinder body 301 of the work roll balance bending cylinder 3 by 14 first screws 409. The hydraulic device includes a wear-resistant push rod 402, a piston 403, a guide ring 404, a sealing ring 405, a gasket 406, a hydraulic cylinder cover 407, and a hydraulic cylinder body 408. The hydraulic cylinder body 408 is embedded and fixed to the corresponding position of the groove 310 of the bending cylinder body 301 by 4 fourth screws 412. The hydraulic cylinder cover 407 and the hydraulic cylinder body 408 are fixed together by 8 third screws 411. The piston 403 is fitted with a sealing ring 405 and two guide rings 404 at its rear end, and is fixed to the wear-resistant push rod 402 by 12 second screws 410 at its front end. It moves within the movable area of ​​the hydraulic cylinder head 407 and the hydraulic cylinder body 408, and a gasket 406 is installed between the hydraulic cylinder head 407 and the wear-resistant liner 401 to increase friction and reduce wear. The wear-resistant push rod 402 is located in the arc-shaped groove in the middle of the wear-resistant liner 401 structure, sliding back and forth within the wear-resistant liner 401 to achieve a lateral pushing action. The pushable piston slide area 420 is set to 10mm to meet the clearance compensation requirements, reducing the clearance between the work roll bearing seat 5 and the mill stand 1 column, which in turn reduces the clearance III between the work roll bearing seat 5 and the work roll balance bending cylinder 3. The wear-resistant liner 401 and the wear-resistant push rod 402 can be made of high-manganese steel.

[0024] This embodiment also provides a method for using an embedded hydraulic vibration device in the work roll bearing housing of a strip mill, including the following steps: S1. System Initialization: After the installation of the embedded vibration damping hydraulic device 4 in the working roll bearing housing of the strip mill is completed, the online monitoring system of the mill is matched to display the vibration status and rolling process parameters to the user in a visual manner.

[0025] S2. Device initialization: When the strip mill is running unloaded and waiting for inspection, the piston 403 is brought into contact with the bottom of the hydraulic cylinder 408. Oil supply has not started, ensuring that the wear-resistant push rod 402 is in the initial position.

[0026] S3. Dynamic Gap Adjustment: When the strip mill is working, the mill's AGC hydraulic system 7 receives a pressing command. At this time, under a large pressing amount, the mill will generate large vibrations. The existence of gap will cause the horizontal vibration to increase. At this time, the embedded vibration damping hydraulic device 4 receives a start command and begins to dynamically adjust the gap. The hydraulic system supplies oil, and the piston 403 in the embedded vibration damping hydraulic device 4 begins to push outward, driving the wear-resistant push rod 402 forward, so that it contacts the work roll bearing seat 5. This dynamically compensates for the installation gap between the work roll bearing seat 5 and the work roll balance bending cylinder 3, and suppresses the horizontal vibration of the mill.

[0027] S4. Dynamic Pressure Adjustment: After the wear-resistant push rod 402 contacts the work roll bearing seat 5, the hydraulic system begins to dynamically adjust. The oil pressure is adjusted according to the vibration condition to provide lateral thrust and actively affect the vibration system. According to the signal feedback from the monitoring system, when the vibration amplitude suddenly increases, the hydraulic control increases the lateral thrust, and vice versa. The dynamic adjustment allows the rolling mill to return to a more stable rolling state.

[0028] S5. Vibration damping device retraction: After rolling is completed, when the continuous rolling mill needs to perform roll changing work or maintenance rest, the embedded vibration damping hydraulic device 4 receives the end command, the embedded vibration damping hydraulic device 4 automatically depressurizes, the hydraulic system starts to discharge oil, the piston 403 starts to retract, the wear-resistant push rod 402 retracts to the initial position, and the control work of the embedded vibration damping hydraulic device 4 ends. When the next rolling starts, the embedded vibration damping hydraulic device 4 will start working again.

[0029] During the rolling process of a continuous rolling mill, if the presence of belt tension is considered, the work roll bearing housing 5 will be biased towards the exit side (or entrance side). In this case, the aforementioned embedded vibration damping hydraulic device 4 should be installed between the work roll bearing housing 5 on the exit side (or entrance side) and the stand pillar 1. If the influence of belt tension during rolling is not considered, the aforementioned embedded vibration damping hydraulic device 4 can be directly installed at the corresponding positions on the exit side and entrance side of each stand of the continuous rolling mill. This can simultaneously reduce the gap between the work roll bearing housing 5 on both sides and the stand pillar 1, thereby achieving the effect of suppressing the horizontal vibration of the rolling mill. In this case, it is necessary to consider that the side walls of the left and right end work roll balance bending cylinder 3 cylinder body 301 are fixed to the work roll baffle device 2 by bolts, and different work roll balance bending cylinder 3 cylinder bodies 301 need to be prepared to suit the device installation.

[0030] In the above embodiments, the present invention provides an embedded hydraulic vibration damping device and its usage method for a strip mill work roll bearing seat. The present invention embeds the vibration damping device in the groove of the work roll balance bending cylinder body, without requiring modification of the mill frame or increasing the mill space size. It can be directly adapted to existing mills, reducing modification costs and simplifying the application process. Meanwhile, the hydraulic vibration suppression device of this invention is easy to install and adjust. The dynamically adjustable lateral thrust output by the hydraulic vibration suppression device compensates for the assembly gap between the work roll bearing seat and the archway column in real time, effectively changing the dynamic characteristics of the vibration system. Furthermore, by collecting data in real time through the vibration monitoring module, the hydraulic pressure and push rod displacement of the vibration suppression device can be dynamically adjusted remotely, reducing the horizontal vibration amplitude of the rolling mill and thus improving the product qualification rate. The wear-resistant liner and wear-resistant push rod of this invention are made of high-manganese steel, which can extend their service life compared to traditional wear-resistant parts. Each component is assembled independently, eliminating the need for complete disassembly during replacement. The hydraulic piston and wear-resistant push rod of the hydraulic liner are fixed with screws, resulting in less friction in the slideway and easier relative movement, without affecting replacement. Considering the adjustment of the work roll system's reduction, the pushing direction of the wear-resistant push rod of the hydraulic vibration suppression device is perpendicular to the reduction adjustment direction of the AGC hydraulic system, which can basically ensure that the hydraulic vibration suppression device will not be damaged during the strip rolling process. At the same time, a new oil supply pipeline is added to the hydraulic vibration suppression device for convenient real-time adjustment without disrupting the oil supply circuit of the original hydraulic system of the strip rolling mill.

[0031] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the inventive concept should fall within the protection scope of the present invention. All technical contents for which protection is sought in this invention are fully described in the claims.

Claims

1. A hydraulic vibration damping device embedded in the work roll bearing seat of a strip mill, comprising a frame arch (1), a work roll baffle device (2), a work roll balance bending cylinder (3), an embedded vibration damping hydraulic device (4), and a work roll bearing seat (5), characterized in that: The working roll balancing bending cylinder (3) is installed between the frame arch (1) and the working roll bearing seat (5). The cylinder body (301) of the working roll balancing bending cylinder (3) has a groove (310) on its side wall, and an oil supply pipe communicating with the groove (310) is provided inside the cylinder body (301). The embedded vibration damping hydraulic device (4) includes a wear-resistant liner (401) and a hydraulic device. The wear-resistant liner (401) is fixedly connected to the cylinder body (301) and the cylinder block (3) of the working roll balancing bending cylinder (3). 02) and the wear-resistant liner (401) has an arc groove in the middle; the hydraulic device is embedded in the groove (310) of the cylinder body (301) of the working roll balance bending cylinder (3), and the wear-resistant push rod (402) of the hydraulic device can slide along the arc groove to dynamically compensate the installation gap between the working roll bearing seat (5) and the working roll balance bending cylinder (3); the working roll baffle device (2) is fixedly connected between the frame archway (1) and the working roll balance bending cylinder (3) to fix the working roll balance bending cylinder.

2. The embedded hydraulic vibration device for the work roll bearing seat of a strip mill according to claim 1, characterized in that: The hydraulic device includes a wear-resistant push rod (402), a piston (403), a guide ring (404), a sealing ring (405), a hydraulic cylinder head (407), and a hydraulic cylinder body (408), which can be installed separately. The hydraulic cylinder body (408) is fixedly connected to the bottom of the groove (310), the hydraulic cylinder head (407) is fixedly connected to the hydraulic cylinder body (408), and a gasket (406) is sandwiched between the hydraulic cylinder head (407) and the wear-resistant liner (401). The piston (403) is located inside the hydraulic cylinder body (408), and the rear end of the piston (403) is fitted with a guide ring (404) and a sealing ring (405). The front end of the piston (403) is fixedly connected to the wear-resistant push rod (402).

3. The embedded hydraulic vibration device for the work roll bearing seat of a strip mill according to claim 2, characterized in that: Both the wear-resistant liner (401) and the wear-resistant push rod (402) are made of high manganese steel. The maximum push distance of the wear-resistant push rod (402) is 10mm, and its pushing direction is perpendicular to the pressing adjustment direction of the AGC hydraulic system (7).

4. The embedded hydraulic vibration device for the work roll bearing seat of a strip mill according to claim 1, characterized in that: The working roll baffle device (2) includes a pressure plate guide rail (201), a pressure plate (202) and a working roll baffle (203); wherein, the pressure plate guide rail (201) is fixedly mounted on the cylinder body (301) of the working roll balance bending cylinder (3), the pressure plate (202) is slidably assembled between the pressure plate guide rail (201), and the working roll baffle (203) is fixedly connected to the frame archway (1) and abuts against the pressure plate (202).

5. A method for using an embedded hydraulic vibration device in the work roll bearing housing of a strip mill, characterized in that: Using the apparatus according to any one of claims 1-4, the steps include: S1. System initialization: After the installation of the embedded vibration damping hydraulic device (4) in the working roll bearing seat of the strip mill is completed, the online monitoring system of the mill is matched to display the vibration status and rolling process parameters to the user in a visual way. S2. Device initialization: When the strip mill is running unloaded and waiting for inspection, the piston (403) is in contact with the bottom of the hydraulic cylinder (408) and oil supply is not started, ensuring that the wear-resistant push rod (402) is in the initial position. S3. Gap Dynamic Adjustment: When the strip mill is working, the mill AGC hydraulic system (7) receives a pressing command. At this time, under a large pressing amount, the mill will generate a large vibration. The existence of the gap will cause the horizontal vibration to expand. At this time, the embedded vibration damping hydraulic device (4) receives a start command and starts to dynamically adjust the gap. The hydraulic system supplies oil, and the piston (403) in the embedded vibration damping hydraulic device (4) starts to push outward, driving the wear-resistant push rod (402) forward, so that it contacts the work roll bearing seat (5), dynamically compensating the installation gap between the work roll bearing seat (5) and the work roll balance bending cylinder (3), and suppressing the horizontal vibration of the mill. S4. Dynamic pressure adjustment: After the wear-resistant push rod (402) contacts the work roll bearing seat (5), the hydraulic system begins to dynamically adjust. The oil pressure is adjusted according to the vibration condition to provide side thrust and actively affect the vibration system. According to the signal feedback of the monitoring system, when the vibration amplitude suddenly increases, the hydraulic control increases the side thrust, and vice versa. The dynamic adjustment makes the rolling mill return to a more stable rolling state. S5. Vibration damping device retraction: After rolling is completed, when the continuous rolling mill needs to perform roll changing work or maintenance rest, the embedded vibration damping hydraulic device (4) receives the end command, the embedded vibration damping hydraulic device (4) automatically depressurizes, the hydraulic system starts to discharge oil, the piston (403) starts to retract, the wear-resistant push rod (402) retracts to the initial position, and the embedded vibration damping hydraulic device (4) control work ends. When the next rolling starts, the embedded vibration damping hydraulic device (4) will start working again.

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