Hydraulic balance mechanism for roller

Abstract

The utility model relates to the technical field of metallurgical machinery, and discloses a roller hydraulic balance mechanism which comprises a mounting frame and a plurality of rotating motors, the output ends of the rotating motors are fixedly connected with rolling rollers, and the left ends of the rolling rollers are rotationally connected to the left side of the interior of the mounting frame. A lifting mechanism is arranged at the top of the inner side of the mounting frame and used for conducting lifting adjustment on the upper rolling roller and the lower rolling roller, and a double-balance mechanism is arranged at the top of the mounting frame and used for reducing thread damage generated in the adjustment process of the lifting mechanism. The driving motor drives the double worm shafts to be in transmission with the worm gear groove of the threaded barrel, so that the threaded barrel rotates to push the screw to ascend and descend in the limiting disc, the rolling roller is driven to adjust the height through the rotating sleeve, the effect of accurate ascending and descending adjustment of the rolling roller is achieved, shaking and deflection during adjustment are reduced, screw thread damage is reduced, and the rolling precision is improved; the service life of the screw is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical machinery technology, and in particular to a hydraulic balancing mechanism for rolling mill rolls. Background Technology

[0002] Rolls are the core components of rolling mill equipment, mainly used for rolling metal materials. They are cylindrical rolls with surfaces treated by quenching and grinding, giving them high hardness and wear resistance. Rolls are mounted on the mill stand via journals at both ends and are driven to rotate by a motor. The friction between the roll surface and the metal billet causes plastic deformation, thereby rolling it into the required plates and profiles.

[0003] During the rolling process, the rolls must withstand enormous rolling forces, friction, and thermal stress. Therefore, they are mostly made of alloy forged steel or cast iron to ensure strength and stability. Depending on the type of rolling mill, they can undertake different rolling tasks. In a three-roll mill, the lifting and lowering adjustment of the rolls is crucial to the rolling accuracy. However, their own weight can easily cause them to sway or tilt during adjustment, which can damage the screw threads and affect equipment operation and product quality.

[0004] A search revealed Chinese patent publication number CN215941061U, which discloses a rolling mill roll balancing mechanism assembly. The assembly includes a welded base and a hydraulic actuator assembly. The hydraulic actuator assembly is fixedly connected to the top of the base. A cross beam is fixedly connected to the top of the hydraulic actuator assembly. Multiple rectangular horizontal tie rods are provided along the edges of the cross beam. The tie rods are fixedly connected to the cross beam via shoulder bushings. The bottom of each tie rod is rotatably connected to the welded base via a tie rod pin. A retaining plate is rotatably sleeved on the tie rod pin, and the retaining plate is fixedly connected to the side wall of the tie rod. This utility model... The roll balancing device with hydraulic actuator assembly and cross beam simplifies the structure of the rolling mill roll balancing mechanism assembly and facilitates operation, thus effectively improving the roll balancing effect. However, the cross beam and tie rod structure can only apply tension to the roll from the outside and cannot accurately match the weight changes during roll lifting and lowering. Since the roll itself has weight, if shaking or skew occurs during adjustment, the screw thread will still be damaged due to uneven force. Moreover, the structure does not guide and limit the screw lifting and lowering process, making it difficult to fundamentally solve the problem of shaking or skew during roll lifting and lowering adjustment, especially the problem of easy damage to the screw thread. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a hydraulic balancing mechanism for rolls, which aims to improve the existing technology that is difficult to fundamentally solve the problem of swaying or tilting during roll lifting and adjustment, especially the problem of easy damage to the screw threads.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a hydraulic balancing mechanism for rolling mills, comprising a mounting frame and multiple rotating motors, wherein the output ends of the multiple rotating motors are fixedly connected to rolling mills, and the left ends of the multiple rolling mills are rotatably connected to the inner left side of the mounting frame, wherein a lifting mechanism is provided on the inner top of the mounting frame, the lifting mechanism being used to adjust the upper and lower rolling mills, and a double balancing mechanism is provided on the top of the mounting frame, the double balancing mechanism being used to reduce thread damage caused by the lifting mechanism during adjustment;

[0007] The lifting mechanism includes multiple stroke cylinders, which are respectively fixedly connected to the left and right ends of the top and bottom of the inner side of the mounting frame. A limit base is fixedly connected to the bottom of the inner side of the stroke cylinder at the top left end, and a limit plate is fixedly connected to the top of the inner side of the stroke cylinder. A screw is slidably connected inside the limit plate. Rotary sleeves are rotatably connected to the left and right ends of the top and bottom rolling rollers. The bottom end of the screw is rotatably connected to the top of the left rotary sleeve. A threaded cylinder is threadedly connected to the outside of the screw. A worm gear drive assembly is provided on the right side of the mounting frame.

[0008] The above technical solution, through the coordinated operation of the mounting frame, rotating motor, rolling rolls, lifting mechanism, and double balancing mechanism, achieves precise adjustment of the rolling roll height during the rolling process. This reduces thread damage during lifting mechanism adjustment, ensures rolling accuracy, extends equipment lifespan, and improves metallurgical production efficiency.

[0009] As a further description of the above technical solution:

[0010] The dual balancing mechanism includes two hydraulic cylinders, which are respectively fixedly connected to the top left and right sides of the mounting frame. Piston rods are slidably connected inside each of the two hydraulic cylinders. Hooks are fixedly connected to the bottom of each of the two piston rods. Connecting seats are engaged inside each of the two hooks. Roller components are fixedly connected to the bottom of each of the two connecting seats.

[0011] The above technical solution uses the cooperation of hydraulic cylinders, piston rods, hooks, connecting seats, and rolling components to apply tension to the rolling rolls, offsetting the tension of the rolling roll weight on the screw, reducing swaying and skew, improving rolling accuracy, and facilitating installation, disassembly, and equipment maintenance.

[0012] As a further description of the above technical solution:

[0013] The worm drive assembly includes a drive motor, which is fixedly connected to the right side of the mounting bracket. The output end of the drive motor is fixedly connected to a double worm shaft. The threaded cylinder has a worm wheel groove on its outside, and the external threads of the double worm shaft are connected to the inside of the worm wheel groove.

[0014] The above technical solution involves a worm gear drive system formed by a drive motor, a double worm shaft, and a worm wheel groove in a threaded cylinder. This system drives the screw to rise and fall, precisely adjusting the height of the rolling rolls and ensuring transmission stability and adjustment accuracy.

[0015] As a further description of the above technical solution:

[0016] The worm gear drive assembly also includes multiple limiting sleeves, which are respectively fixedly connected to the inner left and right ends of the mounting bracket and the left side of the mounting bracket, and the double worm shaft passes through the interior of the multiple limiting sleeves.

[0017] The above technical solution involves fixing the device to the mounting frame with a limiting sleeve, through which the double worm shaft passes, ensuring the rotational stability and accuracy of the double worm shaft, avoiding transmission errors caused by shaking, and improving the operational reliability of the equipment.

[0018] As a further description of the above technical solution:

[0019] A limiting frame is fixedly connected to the top inner side of the mounting bracket, and the middle part of the double worm shaft is rotatably connected inside the limiting frame.

[0020] The above technical solution involves using a limiting frame at the top inner side of the mounting frame to rotatably connect the middle part of the double worm shaft within the limiting frame, ensuring the rotational accuracy of the double worm shaft, enhancing the stability of the worm drive assembly, and ensuring a smooth and reliable rolling roll adjustment process.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the worm gear groove of the double worm shaft and the threaded cylinder is driven by the drive motor, so that the threaded cylinder rotates and pushes the screw to rise and fall in the limiting plate. This drives the rolling roll to adjust its height through the rotating sleeve, the stroke cylinder guides it, and the limiting structure restricts the stroke. This achieves the effect of precise lifting and lowering adjustment of the rolling roll, reduces swaying and skew during adjustment, reduces screw thread damage, improves rolling accuracy, extends screw service life, ensures stable rotation of the double worm shaft, and avoids transmission errors.

[0023] 2. In this utility model, the hydraulic system injects oil into the hydraulic cylinder to push the piston rod out, the hook hooks the connecting seat, and the rolling mill components apply an upward pulling force to the rolling mill. The oil pressure is adjusted in real time according to the position and weight of the rolling mill, which realizes the effect of offsetting the pulling force of the rolling mill weight on the screw, reducing screw thread damage, avoiding shaking when the rolling mill is raised and lowered, improving rolling accuracy, and the hook and connecting seat locking design facilitates installation and disassembly, making maintenance convenient. Attached Figure Description

[0024] Figure 1 This is a front view of the hydraulic balancing mechanism for the rolls proposed in this utility model;

[0025] Figure 2 This is a partial structural exploded view of the hydraulic balancing mechanism for the rolls proposed in this utility model;

[0026] Figure 3 This is a partial cross-sectional view of the lifting mechanism in the hydraulic balancing mechanism for rolls proposed in this utility model;

[0027] Figure 4 This is a structural breakdown diagram of the balancing mechanism in the hydraulic balancing mechanism for rolls proposed in this utility model.

[0028] Legend:

[0029] 1. Mounting frame; 2. Rotary motor; 3. Rolling roll; 4. Lifting mechanism; 41. Stroke cylinder; 42. Limiting base; 43. Limiting plate; 44. Screw; 45. Rotating sleeve; 46. Threaded cylinder; 47. Worm drive assembly; 471. Drive motor; 472. Double worm shaft; 473. Worm gear groove; 474. Limiting sleeve; 5. Double balance mechanism; 51. Hydraulic cylinder; 52. Piston rod; 53. Hook; 54. Connecting seat; 55. Rolling roll component; 6. Limiting frame. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model provides a hydraulic balancing mechanism for rolling mills, including a mounting frame 1 and multiple rotating motors 2. The output ends of the multiple rotating motors 2 are all fixedly connected to rolling mills 3. The left ends of the multiple rolling mills 3 are rotatably connected to the inner left side of the mounting frame 1. A lifting mechanism 4 is provided on the top inner side of the mounting frame 1. The lifting mechanism 4 is used to adjust the lifting of the upper and lower rolling mills 3. A double balancing mechanism 5 is provided on the top of the mounting frame 1. The double balancing mechanism 5 is used to reduce the thread damage caused by the lifting mechanism 4 during adjustment.

[0032] The lifting mechanism 4 includes multiple stroke cylinders 41, which are respectively fixedly connected to the left and right ends of the top and bottom of the inner side of the mounting frame 1. A limiting base 42 is fixedly connected to the bottom of the inner side of the left stroke cylinder 41, and a limiting plate 43 is fixedly connected to the top of the inner side of the stroke cylinder 41. A screw 44 is slidably connected inside the limiting plate 43. Rotating sleeves 45 are rotatably connected to the left and right ends of the top and bottom rolling rollers 3. The bottom end of the screw 44 is rotatably connected to the top of the left rotating sleeve 45, and a threaded cylinder 46 is threadedly connected to the outside of the screw 44. A worm gear drive assembly 47 is provided on the right side of the mounting frame 1. The system includes a drive motor 471, which is fixedly connected to the right side of the mounting bracket 1. The output end of the drive motor 471 is fixedly connected to a double worm shaft 472. The threaded cylinder 46 has a worm gear groove 473 on its outside. The external thread of the double worm shaft 472 is threaded into the inside of the worm gear groove 473. The worm drive assembly 47 also includes multiple limiting sleeves 474, which are fixedly connected to the left and right ends of the inner side of the mounting bracket 1 and the left side of the mounting bracket 1, respectively. The double worm shaft 472 passes through the inside of the multiple limiting sleeves 474. A limiting frame 6 is fixedly connected to the top of the inner side of the mounting bracket 1. The middle part of the double worm shaft 472 is rotatably connected to the inside of the limiting frame 6.

[0033] Specifically, in the lifting mechanism 4, multiple stroke cylinders 41 are respectively fixed to the top left and right ends and the bottom left and right ends of the inner side of the mounting frame 1. The bottom of the inner side of the stroke cylinder 41 at the top left end is provided with a limiting base 42, and the top of the inner side is provided with a limiting plate 43. The limiting plate 43 is internally connected to a screw 44. The top rolling roller 3 and the bottom rolling roller 3 are rotatably connected to the left and right ends of the outer side of the rotating sleeve 45. The bottom end of the screw 44 is rotatably connected to the top of the left rotating sleeve 45, and the external thread is connected to a threaded cylinder 46. In the worm drive assembly 47 on the right side of the mounting frame 1, the drive motor 471 is fixed to the right side of the mounting frame 1, and the output end is connected to a double worm shaft 472. A worm wheel is opened on the outside of the threaded cylinder 46. The worm gear groove 473 is threadedly connected to the inside of the worm wheel groove 473. Multiple limiting sleeves 474 are fixed to the left and right ends and the left side of the inner side of the mounting frame 1. The worm gear shaft 472 passes through the limiting sleeves 474. The limiting frame 6 is fixed to the top of the inner side of the mounting frame 1. The middle part of the worm gear shaft 472 is rotatably connected to the limiting frame 6. When it is necessary to adjust the height of the upper and lower rolling rolls 3, the drive motor 471 starts, driving the worm gear shaft 472 to rotate. The worm gear shaft 472 and the worm wheel groove 473 outside the threaded cylinder 46 form a worm gear transmission, driving the threaded cylinder 46 to rotate. Since the screw 44 is threadedly connected to the threaded cylinder 46, and the screw 44 is limited by the limiting plate 43, it only... The screw 44 can slide up and down. The rotation of the threaded cylinder 46 pushes the screw 44 to move up and down within the limiting plate 43. The bottom end of the screw 44 rotates and connects to the left rotating sleeve 45, thereby driving the top rolling roll 3 and the bottom rolling roll 3 to rise and fall through the rotating sleeve 45. During this process, the stroke cylinder 41 provides guidance for the rise and fall of the screw 44. The limiting base 42 and the limiting plate 43 limit the stroke range of the screw 44 to avoid excessive rise and fall. The limiting sleeve 474 and the limiting frame 6 support and limit the double worm shaft 472 to ensure the stability and accuracy of the rotation of the double worm shaft 472 and avoid transmission errors caused by shaking. When the lifting mechanism 4 adjusts the rolling roll 3, the double balancing mechanism 5... An upward pulling force is applied to the rolling roll 3 to counteract the pulling force generated by the weight of the rolling roll 3 on the screw 44. The drive motor 471 drives the double worm shaft 472 and the worm wheel groove 473 to rotate the threaded cylinder 46 and push the screw 44 to rise and fall, thus completing the adjustment of the rolling roll 3. The double balancing mechanism 5 reduces the load on the screw 44. The guide and limiting functions of the stroke cylinder 41, the limiting plate 43, the limiting sleeve 474 and the limiting frame 6 ensure the stability of the adjustment process, realize the precise lifting and lowering adjustment of the rolling roll 3, reduce the shaking or skew during the adjustment process, reduce the damage to the screw 44 threads, and improve the rolling accuracy and the service life of the screw 44.

[0034] Reference Figure 1 , Figure 2 and Figure 4The dual balancing mechanism 5 includes two hydraulic cylinders 51, which are fixedly connected to the top left and right sides of the mounting frame 1 respectively. Piston rods 52 are slidably connected inside the two hydraulic cylinders 51. Hooks 53 are fixedly connected to the bottom of the two piston rods 52. Connecting seats 54 are engaged inside the two hooks 53. Roller components 55 are fixedly connected to the bottom of the two connecting seats 54.

[0035] Specifically, in the dual balancing mechanism 5, two hydraulic cylinders 51 are fixedly connected to the top left and right sides of the mounting frame 1, respectively. A piston rod 52 is slidably connected inside each cylinder. A hook 53 is fixedly connected to the bottom of the piston rod 52. A connecting seat 54 is engaged inside the hook 53. A rolling mill component 55 is fixedly connected to the bottom of the connecting seat 54. The rolling mill component 55 is fixedly connected to the rolling mill roll 3. When the lifting mechanism 4 adjusts the height of the rolling mill roll 3, the weight of the rolling mill roll 3 itself will exert a downward pulling force on the screw 44. At this time, the dual balancing mechanism 5 is activated. The hydraulic system injects hydraulic oil into the hydraulic cylinder 51, pushing the piston rod 52 downwards. The hook 53 moves downwards with the piston rod 52 and hooks onto the connecting seat 54. As hydraulic oil continues to be injected, the oil pressure in the hydraulic cylinder 51 increases. The piston rod 52 applies an upward pulling force to the connecting seat 54 through the hook 53. This pulling force is transmitted to the rolling roll 3 through the rolling element 55, offsetting part of the weight of the rolling roll 3. During the lifting and lowering of the rolling roll 3, the hydraulic cylinder 51 adjusts the oil pressure in real time according to the position and weight of the rolling roll 3. When the rolling roll 3 rises, the oil pressure in the hydraulic cylinder 51 increases, and the pulling force applied by the piston rod 52 increases accordingly, reducing the upward traction force on the screw 44. When the rolling roll 3 descends, the oil pressure in the hydraulic cylinder 51 decreases appropriately, and the pulling force of the piston rod 52 balances the weight of the rolling roll 3, preventing the screw 44 from swaying due to uneven force. The locking design between the hook 53 and the connecting seat 54 facilitates installation and disassembly. During installation, the connecting seat 54 is aligned with the opening of the hook 53 and inserted, and the locking structure automatically locks. During disassembly, the hydraulic system... The piston rod 52 is slightly raised to release the locking state and separate the parts. This design ensures the connection stability between the double balance mechanism 5 and the rolling roll 3, and facilitates equipment maintenance. The piston rod 52 is pushed to extend and retract by the hydraulic oil in the hydraulic cylinder 51. The locking of the hook 53 and the connecting seat 54 transmits the pulling force, thereby pulling the rolling roll 3 upward. The oil pressure adjustment of the hydraulic cylinder 51 and the application of the pulling force of the piston rod 52 offset the pulling force of the weight of the rolling roll 3 on the screw 44, reduce the damage to the screw 44 threads, and improve the rolling accuracy.

[0036] Working principle: The mounting frame 1 serves as the basic frame, with multiple rolling rolls 3 rotatably connected to its left side. The output end of the rotating motor 2 is fixedly connected to the rolling rolls 3, providing power for the rolling process. The lifting mechanism 4 at the top of the inner side of the mounting frame 1 is used to adjust the height of the upper and lower rolling rolls 3. The double balance mechanism 5 at the top is used to counteract the tension of the weight of the rolling rolls 3 on the screw 44, reducing thread damage. In the lifting mechanism 4, multiple stroke cylinders 41 are fixed to the left and right ends of the top and bottom of the inner side of the mounting frame 1, forming a lifting guide structure. Taking the stroke cylinder 41 at the top left end as an example, its inner bottom is provided with a limiting base 42, and its inner top is provided with a limiting plate 43. The screw 44 passes through the limiting plate 43 and can slide inside it. The top and bottom rolling rolls 3 are rotatably connected to rotating sleeves 45 on their outer left and right ends. The bottom end of the screw 44 is rotatably connected to the top of the left rotating sleeve 45, and the external thread connects to the threaded cylinder 46. The worm drive assembly 47 on the right side of the mounting frame 1 includes a drive motor 471, the output end of which is connected to a double worm shaft 472. A worm gear groove 473 is opened on the outside of the threaded cylinder 46. The double worm shaft 472 and the worm gear groove 473 form a worm gear transmission. Multiple limiting sleeves 474 are fixed on the left and right ends and the left side of the inner side of the mounting frame 1, through which the double worm shaft 472 passes. The limiting frame 6 on the top of the inner side of the mounting frame 1 supports the middle of the double worm shaft 472 to ensure transmission stability. When it is necessary to adjust the height of the rolling roll 3, the drive motor 471 starts and drives the roller. The double worm shaft 472 rotates, meshing with the worm gear groove 473 of the threaded cylinder 46, driving the threaded cylinder 46 to rotate. Since the screw 44 is threadedly connected to the threaded cylinder 46 and can only slide up and down due to the limitation of the limiting plate 43, the rotation of the threaded cylinder 46 pushes the screw 44 to move up and down within the limiting plate 43. The bottom end of the screw 44 drives the rolling roll 3 to rise and fall through the rotating sleeve 45. The stroke cylinder 41 provides guidance for the screw 44. The limiting base 42 and the limiting plate 43 limit its stroke to avoid excessive rising and falling. The limiting sleeve 474 and the limiting frame 6 reduce the radial wobble of the double worm shaft 472 to ensure transmission accuracy. The two hydraulic cylinders 51 of the double balance mechanism 5 are fixed on the top left and right sides of the mounting frame 1, and the bottom of the internal piston rod 52 The connecting hook 53 engages with the connecting seat 54, which is fixed to the rolling roll 3 via the rolling element 55. When the lifting mechanism 4 adjusts the rolling roll 3, the weight of the rolling roll 3 exerts a downward pull on the screw 44. At this time, the hydraulic system injects hydraulic oil into the hydraulic cylinder 51, pushing the piston rod 52 downward. The hook 53 then moves down and hooks the connecting seat 54. As the oil pressure increases, the piston rod 52 applies an upward pull on the rolling roll 3 through the hook 53, the connecting seat 54, and the rolling element 55, offsetting part of its weight. During the lifting and lowering process of the rolling roll 3, the hydraulic cylinder 51 adjusts the oil pressure in real time: when the rolling roll 3 rises, the oil pressure increases, the piston rod 52 pulls more, and the upward traction force on the screw 44 is reduced.When the rolling roll 3 descends, the oil pressure is appropriately reduced to balance the tension of the piston rod 52 with the weight of the rolling roll 3, preventing the screw 44 from swaying due to uneven force. The locking structure between the hook 53 and the connecting seat 54 facilitates installation and disassembly. During installation, the connecting seat 54 is inserted into the opening of the hook 53, and the locking structure automatically locks. During disassembly, the locking structure can be released by slightly lifting the piston rod 52 through the hydraulic system, which facilitates equipment maintenance. The drive motor 471 drives the double worm shaft 472 and the worm wheel groove 473 to rotate the threaded cylinder 46 and push the screw 44 to rise and fall, completing the rolling roll... The height adjustment of the screw 44 is achieved by hydraulic oil in the hydraulic cylinder 51 pushing the piston rod 52 to extend and retract. The tension is transmitted through the hook 53 and connecting seat 54, offsetting the influence of the weight of the rolling roll 3 on the screw 44. The guiding and limiting functions of the stroke cylinder 41, limit plate 43, limit sleeve 474, and limit frame 6 ensure stability during adjustment. This mechanism effectively reduces swaying or skew during the raising and lowering of the rolling roll 3, reduces thread damage to the screw 44, improves rolling accuracy, and extends the service life of the screw 44. Furthermore, its simple structure facilitates installation and maintenance, reducing equipment costs.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic balancing mechanism for rolling mill rolls, comprising a mounting frame (1) and multiple rotating motors (2), characterized in that: The output ends of the multiple rotating motors (2) are fixedly connected to rolling rollers (3). The left ends of the multiple rolling rollers (3) are rotatably connected to the inside left side of the mounting frame (1). The top of the inner side of the mounting frame (1) is provided with a lifting mechanism (4). The lifting mechanism (4) is used to adjust the upper and lower rolling rollers (3). The top of the mounting frame (1) is provided with a double balancing mechanism (5). The double balancing mechanism (5) is used to reduce the thread damage caused by the lifting mechanism (4) during adjustment. The lifting mechanism (4) includes multiple stroke cylinders (41), which are fixedly connected to the top left and right ends and the bottom left and right ends of the inner side of the mounting frame (1). The bottom of the stroke cylinder (41) at the top left end is fixedly connected to a limiting base (42), and the top of the stroke cylinder (41) is fixedly connected to a limiting plate (43). A screw (44) is slidably connected inside the limiting plate (43). Rotary sleeves (45) are rotatably connected to the outer left and right ends of the top rolling roller (3) and the bottom rolling roller (3). The bottom end of the screw (44) is rotatably connected to the top of the left rotating sleeve (45). A threaded cylinder (46) is threadedly connected to the outside of the screw (44). A worm gear drive assembly (47) is provided on the right side of the mounting frame (1).

2. The hydraulic balancing mechanism for rolls according to claim 1, characterized in that: The dual balancing mechanism (5) includes two hydraulic cylinders (51), which are fixedly connected to the top left and right sides of the mounting frame (1), respectively. Piston rods (52) are slidably connected inside the two hydraulic cylinders (51), and hooks (53) are fixedly connected to the bottom of the two piston rods (52). Connecting seats (54) are engaged inside the two hooks (53), and rolling elements (55) are fixedly connected to the bottom of the two connecting seats (54).

3. The hydraulic balancing mechanism for rolling mills according to claim 1, characterized in that: The worm drive assembly (47) includes a drive motor (471), which is fixedly connected to the right side of the mounting bracket (1). The output end of the drive motor (471) is fixedly connected to a double worm shaft (472). The threaded cylinder (46) has a worm gear groove (473) on its outside, and the external thread of the double worm shaft (472) is threaded into the inside of the worm gear groove (473).

4. The hydraulic balancing mechanism for rolls according to claim 3, characterized in that: The worm drive assembly (47) also includes multiple limiting sleeves (474), which are respectively fixedly connected to the inner left and right ends of the mounting bracket (1) and the left side of the mounting bracket (1). The double worm shaft (472) passes through the interior of the multiple limiting sleeves (474).

5. The hydraulic balancing mechanism for rolls according to claim 3, characterized in that: The inner top of the mounting bracket (1) is fixedly connected to the limiting bracket (6), and the middle part of the double worm shaft (472) is rotatably connected inside the limiting bracket (6).

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