Rough rolling main transmission balancing device

Abstract

The invention discloses a rough rolling main transmission balancing device which comprises a balance adjusting frame, a reinforced transmission balancing column, a balancing device dry oil lubrication piping set, a detection control assembly and a dynamic compensation cushion frame, the detection control assembly is arranged on the balance adjusting frame, and the detection control assembly is in communication connection with a detection terminal. The detection terminal is arranged at the end side of the reinforced transmission balance column, the balance adjusting frame comprises an upper balance driving lever group and a lower balance driving lever group, an upper bearing seat is rotatably mounted at the top of the upper balance driving lever group, and a lower bearing seat is rotatably mounted at the top of the lower balance driving lever group. The device has the beneficial effects that the bearing capacity is improved, the stress distribution is more uniform, the equipment stability is enhanced, the automation level is improved, the manual intervention is reduced, the automation level and the production efficiency of the equipment are improved, micron-order dynamic compensation bearing is realized, the fault rate and the maintenance frequency of the equipment are reduced, and the maintenance cost and the downtime of the equipment are reduced.

Description

Technical Field

[0001] This invention relates to the field of roughing mills, and in particular to a balancing device for the main drive of a roughing mill. Background Technology

[0002] In hot rolling production lines, the main drive balancing device for roughing mills is a key piece of equipment to ensure the stable operation of the mill. With the acceleration of production pace and the increase in production demand, some problems have gradually been exposed in the design of traditional main drive balancing devices for roughing mills. In particular, under high-output and high-load production environments, the stability and load-bearing capacity of the equipment are challenged.

[0003] Currently, the mainstream design of the main drive balancing device for the 1780 roughing mill in China is a balancing device with a diameter of 1100mm, which is suitable for production lines with an annual output of 2 million tons. However, with the increase in production demand, higher requirements have been placed on the load-bearing capacity and stability of the equipment in the production line. The traditional 1100mm diameter balancing device is prone to problems such as large vibration, poor stability and rapid wear under high load, which affects production efficiency and equipment life. Summary of the Invention

[0004] The purpose of this invention is to provide a balancing device for the main drive of a roughing mill in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A roughing mill main drive balancing device includes a balancing adjustment frame, a reinforced transmission balancing column, a balancing device dry oil lubrication piping assembly, a detection and control assembly, and a dynamic compensation pad frame. The detection and control assembly is mounted on the balancing adjustment frame and is communicatively connected to a detection terminal, which is located on the end side of the reinforced transmission balancing column.

[0007] The balance adjustment frame includes an upper balance drive lever group and a lower balance drive lever group. An upper bearing seat is rotatably mounted on the top of the upper balance drive lever group, and a lower bearing seat is rotatably mounted on the top of the lower balance drive lever group. Two sets of reinforced transmission balance columns are provided, and the two sets of reinforced transmission balance columns are rotatably mounted on the bearings of the upper bearing seat and the lower bearing seat, respectively.

[0008] The dynamic compensation pad is placed at the bottom of the upper balance drive lever group and the lower balance drive lever group;

[0009] The balance adjustment frame and the reinforced transmission balance column are provided with a number of lubrication holes, and the end of the branch pipe of the dry oil lubrication piping group of the balance device is installed into the lubrication holes.

[0010] Furthermore, the upper balance drive lever assembly includes an upper balance cylinder, an upper lifting arm, and an upper balance assembly fulcrum. One end of the upper lifting arm is rotatably mounted to the upper balance assembly fulcrum, and the other end of the upper lifting arm is rotatably mounted to an upper pull arm via an upper pull arm shaft. The piston rod end of the upper balance cylinder is rotatably mounted to the upper pull arm. An upper bearing seat is rotatably mounted on the upper lifting arm, and the upper bearing seat is mounted to the top of the upper bearing seat via a shaft seat rotating component.

[0011] Furthermore, the lower balance drive lever assembly includes a lower balance cylinder, a lower lifting arm, and a lower balance assembly fulcrum. One end of the lower lifting arm is rotatably mounted to the lower balance assembly fulcrum, and the other end of the lower lifting arm is rotatably mounted to a lower pull arm via a lower pull arm shaft. The piston rod end of the lower balance cylinder is rotatably mounted to the lower pull arm, and a lower bearing seat is rotatably mounted on the lower lifting arm. The lower bearing seat is mounted to the top of the lower bearing seat frame via a shaft seat rotating component.

[0012] Furthermore, the balance adjustment frame also includes a base support frame, and both the upper balance cylinder and the lower balance cylinder are mounted on the balance adjustment frame via balance cylinder seats.

[0013] Furthermore, the dynamic compensation pad frame includes a locking cylinder, an adjusting slide, and a guide support. A guide adjustment plate is installed on the top of the guide support, and a liner plate corresponding to the position of the guide adjustment plate is installed on the bottom of the adjusting slide. The liner plate is pressed onto the guide adjustment plate. The piston rod end of the locking cylinder is connected to the adjusting slide via a cylinder connecting shaft sleeve assembly. An outer pad frame and an intermediate pad frame are installed on the adjusting slide.

[0014] Furthermore, a bearing shaft is installed on the lower lifting arm, the intermediate pad is placed below the bearing shaft, and the outer pad is placed below the upper bearing seat.

[0015] Furthermore, the bottom support frame is equipped with an upper locking bracket and a lower locking bracket. The upper locking bracket is installed with the upper balance drive lever assembly via an upper balance locking rod, and the lower locking bracket is installed with the lower balance drive lever assembly via a lower balance locking rod. A pin is inserted into the upper lifting arm, and a swing hole matching the pin is provided on the upper bearing seat frame.

[0016] Furthermore, the bearing seat rotating component includes a bushing, an inner shaft, and a pressure cap, wherein the inner shaft is disposed inside the bushing, and the pressure cap is pressed onto the bushing.

[0017] Furthermore, the detection terminal includes a vibration sensor and a pressure sensor, a monitoring frame is provided on the end side of the reinforced transmission balance column, the detection terminal is installed on the monitoring frame, and the detection control assembly is connected to the detection terminal through a transmission line.

[0018] Furthermore, the reinforced transmission balance column includes a reinforced transmission column body, and the two ends of the reinforced transmission column body are connected to connecting end pieces via universal joints.

[0019] The beneficial effects of the roughing mill main drive balancing device described in this invention are: improved load-bearing capacity. By increasing the diameter of the balancing device, the load-bearing capacity of the equipment is significantly improved, which can better cope with high-load production environment, increase production requirements, and make stress distribution more uniform.

[0020] To enhance equipment stability, the larger diameter balancing device has a larger contact area and stronger rigidity, which can effectively reduce vibration and impact during the rolling process, ensuring stable operation of the equipment under high load. In addition, the reinforced balancing device is made of high-strength alloy steel, and the key components are heat-treated and surface-hardened, which significantly improves the wear resistance and fatigue resistance of the equipment and extends its service life.

[0021] By improving the level of automation and adding a detection system, real-time monitoring and automatic adjustment of the balancing device were achieved, reducing manual intervention, improving the automation level and production efficiency of the equipment, and realizing micron-level dynamic compensation load.

[0022] It reduces equipment failure rate and maintenance frequency, lowers equipment maintenance costs and downtime, and meets the modern steel industry's requirements for high output and high efficiency, thus having broad application prospects.

[0023] By improving the stability and load-bearing capacity of the equipment, energy consumption and wear are reduced, thereby lowering energy consumption and carbon emissions during the production process, which aligns with the development trend of green manufacturing. Attached Figure Description

[0024] Figure 1 This is a structural diagram of a roughing mill main drive balancing device according to the present invention;

[0025] Figure 2 This is a structural diagram of the connection between the reinforced transmission balance column and the balance adjustment frame of the roughing mill main drive balancing device described in this invention;

[0026] Figure 3 This is a three-dimensional structural diagram of the balance adjustment frame of the roughing mill main drive balancing device described in this invention;

[0027] Figure 4 This is a front view schematic diagram of the balance adjustment frame of the roughing mill main drive balancing device described in this invention;

[0028] Figure 5 This is a left-side view of the balance adjustment frame of the roughing mill main drive balancing device described in this invention;

[0029] Figure 6This is a schematic diagram of the installation of the balance bearing in a roughing mill main drive balancing device according to the present invention;

[0030] Figure 7 This is a structural diagram of the dynamic compensation pad frame of the roughing mill main drive balancing device described in this invention;

[0031] Figure 8 This is a cross-sectional structural diagram of the main drive balancing device for roughing mills described in this invention.

[0032] The annotations in the attached figures are explained as follows:

[0033] 100. Balance adjustment frame; 110. Upper balance drive lever assembly; 111. Upper balance cylinder; 112. Upper pull arm; 113. Upper pull arm shaft; 114. Upper lifting arm; 115. Upper balance assembly fulcrum frame; 116. Upper bearing seat frame; 117. Upper balance locking rod; 118. Pin; 119. Upper locking bracket; 120. Lower balance drive lever assembly; 121. Lower balance cylinder; 122. Lower pull arm; 123. Lower lifting arm; 124. Lower bearing seat frame; 125. Lower balance locking rod; 126. Lower locking bracket; 127. Lower pull arm shaft; 128. Bearing shaft; 130. Base support frame; 140. Upper bearing seat; 141. Bushing; 142. Inner shaft of bushing; 143. Pressure cap; 150. Lower bearing seat; 160. Lubrication hole; 170. Balance cylinder seat;

[0034] 200. Reinforced transmission balance column; 210. Reinforced transmission column body; 220. Universal joint; 230. Connecting end piece;

[0035] 300. Balancing device dry oil lubrication piping assembly;

[0036] 400. Detection and control assembly; 410. Transmission line; 420. Detection frame;

[0037] 500. Hydraulic piping;

[0038] 600. Dynamic compensation pad; 610. Locking cylinder; 620. Cylinder connecting shaft sleeve assembly; 630. Adjusting slide; 631. Liner; 640. Guide support; 641. Guide adjusting plate; 650. Outer pad; 660. Intermediate pad. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0040] The following is combined with Figures 1 to 8 The main drive balancing device for roughing mills provided in this embodiment will be further described as follows:

[0041] Please refer to Figure 1-2 An embodiment of the present invention provides a balancing device for a roughing mill main drive, including a balancing adjustment frame 100, a reinforcing transmission balancing column 200, a balancing device dry oil lubrication piping assembly 300, a detection and control assembly 400, and a dynamic compensation pad frame 600. The balancing device dry oil lubrication piping assembly 300 is used to lubricate key parts and continuously deliver lubricating dry oil. The detection and control assembly 400 is mounted on the balancing adjustment frame 100 and is communicatively connected to a detection terminal. The detection terminal is located on the end side of the reinforcing transmission balancing column 200 and is used to monitor the vibration status and pressure of the device.

[0042] Reference Figure 3-4 The balance adjustment frame 100 includes an upper balance drive lever assembly 110 and a lower balance drive lever assembly 120. An upper bearing seat 140 is rotatably mounted on the top of the upper balance drive lever assembly 110, and a lower bearing seat 150 is rotatably mounted on the top of the lower balance drive lever assembly 120. Two sets of reinforced transmission balance columns 200 are provided. The two sets of reinforced transmission balance columns 200 are rotatably mounted on the bearings of the upper bearing seat 140 and the lower bearing seat 150, respectively. The bearings of the upper bearing seat 140 and the lower bearing seat 150 are both tapered roller bearings.

[0043] The dynamic compensation pad 600 is mounted on the balance adjustment frame 100 and is placed at the bottom of the upper balance drive lever group 110 and the lower balance drive lever group 120 to achieve micron-level dynamic compensation pad placement.

[0044] The balance adjustment frame 100 and the reinforced transmission balance column 200 are provided with several lubrication holes 160. The end of the branch pipe of the dry oil lubrication piping group 300 of the balance device is installed into the lubrication hole 160 to replenish the lubricating oil at the multiple shaft sleeves of the balance adjustment frame 100 and the reinforced transmission balance column 200, thereby reducing the loss.

[0045] like Figures 1-8 As shown, embodiments of the present invention also disclose the following various more optimized specific structures:

[0046] Continue to refer to Figure 3 The upper balance drive lever assembly 110 includes an upper balance cylinder 111, an upper lifting arm 114, and an upper balance assembly fulcrum 115. One end of the upper lifting arm 114 is rotatably mounted to the upper balance assembly fulcrum 115, and the other end of the upper lifting arm 114 is rotatably mounted to an upper pull arm 112 via an upper pull arm shaft 113. The piston rod end of the upper balance cylinder 111 is rotatably mounted to the upper pull arm 112. Here, the upper balance cylinder 111 is connected to the upper pull arm 112 by a pin.

[0047] An upper bearing seat 116 is rotatably mounted on the upper lifting arm 114. The upper bearing seat 116 rotates on the upper lifting arm 114 via a shaft connection. The upper bearing seat 140 is mounted on the top of the upper bearing seat 116 via a shaft seat rotating component.

[0048] In this embodiment, the upper balance cylinder 111 is a hydraulic cylinder. The upper balance cylinder 111 drives the upper pull arm 112 to pull the upper pull arm shaft 113 upward, so that one end of the upper lifting arm 114 is raised and the other end rotates on the upper balance group support frame 115 to form an upper lever. There are two sets of upper lifting arms 114, which are respectively placed at both ends of the upper pull arm shaft 113. There are two sets of upper bearing seat frames 116. The two sets of upper bearing seat frames 116 are connected together by a crossbeam to increase their stability.

[0049] The lower balance drive lever assembly 120 includes a lower balance cylinder 121, a lower lifting arm 123, and a lower balance assembly support frame. One end of the lower lifting arm 123 is rotatably mounted to the lower balance assembly support frame, and the other end of the lower lifting arm 123 is rotatably mounted to a lower pull arm 122 via a lower pull arm shaft 127. The piston rod end of the lower balance cylinder 121 is rotatably mounted to the lower pull arm 122.

[0050] A lower bearing housing 124 is rotatably mounted on the lower lifting arm 123, and the lower bearing housing 150 is mounted on the top of the lower bearing housing 124 via a bearing housing rotator.

[0051] In this embodiment, the lower balance cylinder 121 is a hydraulic cylinder, and its lever drive principle is the same as that of the upper balance drive lever group 110. It also has two sets of lower bearing seats 124, which are arranged between the two sets of upper bearing seats 116, and the lower bearing seat 150 is located below the upper bearing seat 140.

[0052] The balance adjustment frame 100 also includes a base support frame 130, and the upper balance cylinder 111 and the lower balance cylinder 121 are both mounted on the balance adjustment frame 100 through the balance cylinder seat 170.

[0053] The lower balance cylinder 121 and the upper balance cylinder 111 are connected and assembled with the hydraulic drive components through the hydraulic piping 500. This is a common configuration for hydraulic cylinders and will not be described in detail.

[0054] Reference Figure 7-8The dynamic compensation pad 600 includes a locking cylinder 610, an adjusting slide 630, and a guide support 640. The guide support 640 has three sets. A guide adjustment plate 641 is installed on the top of the guide support 640. A liner 631 corresponding to the position of the guide adjustment plate 641 is installed on the bottom of the adjusting slide 630. The liner 631 is pressed onto the guide adjustment plate 641. The locking cylinder 610 is a hydraulic cylinder. The piston rod end of the locking cylinder 610 is connected to the adjusting slide 630 through a cylinder connecting bushing assembly 620. The cylinder connecting bushing assembly 620 is mainly a rotating connecting accessory composed of a shaft and a bushing. The extension and retraction of the locking cylinder 610 causes the adjusting slide 630 to move to a certain position on the guide adjustment plate 641. The thickness of the guide adjustment plate 641 varies at different positions, which causes the adjusting slide 630 to have a slight displacement in the vertical direction. An outer pad 650 and a middle pad 660 are installed on the adjusting slide 630.

[0055] In this embodiment, a bearing shaft 128 is installed on the lower lifting arm 123. Both ends of the bearing shaft 128 are installed on the lower lifting arm 123 through bushings. The intermediate pad 660 is placed under the bearing shaft 128, and the outer pad 650 is placed under the upper bearing seat 116. When the load exceeds 15% of the rated value, the locking cylinder 610 automatically cuts off the oil circuit, the adjusting slide 630 stops moving, and the outer pad 650 and the intermediate pad 660 stop.

[0056] The base support frame 130 is equipped with an upper locking bracket 119 and a lower locking bracket 126. The upper locking bracket 119 is installed with the upper balance drive lever assembly 110 via an upper balance locking rod 117, specifically with the upper pull arm shaft 113 on the upper balance drive lever assembly 110. The lower locking bracket 126 is installed with the lower balance drive lever assembly 120 via a lower balance locking rod 125. When the hydraulic system is not started, it is mechanically locked to prevent it from sliding down. A pin 118 is inserted into the upper lifting arm 114, and a swing hole matching the pin 118 is provided on the upper bearing seat 116, which allows the upper bearing seat 116 to swing slightly on the upper lifting arm 114, enhancing the stability effect.

[0057] The bearing housing includes a bushing 141, an inner shaft 142, and a pressure cap 143. The inner shaft 142 is disposed inside the bushing 141, and the pressure cap 143 is pressed onto the bushing 143. The pressure cap 143 is fixed to the top of the upper bearing housing 116 and the lower bearing housing 124. It adopts a double structure of labyrinth seal and skeleton oil seal, which makes the bushing 143 stable. The pressure cap 143 is provided with a lubrication hole 160.

[0058] In this embodiment, except for the bearing seat rotating part, all other accessories connecting the shaft and the bushing are provided with lubrication holes 160.

[0059] The detection terminal includes a vibration sensor and a pressure sensor. A monitoring frame 420 is provided on the end side of the reinforcing transmission balance column 200. The detection terminal is installed on the monitoring frame 420. The detection control assembly 400 is connected to the detection terminal through a transmission line 410. The detection control assembly 400 is a PLC controller and is controlled by Siemens S7-1500.

[0060] The reinforced transmission balance column 200 includes a reinforced transmission column 210. Both ends of the reinforced transmission column 210 are connected to the connecting end pieces 230 via universal joints 220 for connecting the shafts of the drive end and the roll end.

[0061] like Figures 1-8 The roughing mill main drive balancing device shown is mainly used for the transmission balancing between the drive motor, retarder and rolls in the rolling mill. It is equipped with a balancing device dry oil lubrication piping group 300, a balancing adjustment frame 100 and a detection assembly. It can effectively detect and provide feedback on the reinforced transmission balancing column 200 after diameter and mass reinforcement to achieve balance adjustment, which increases the load-bearing capacity and stability of the equipment and realizes real-time monitoring and automatic adjustment of the balancing device.

[0062] This embodiment takes the 1780 roughing mill as an example. The diameter of the balance column in its transmission balancing device is 1100mm, which is also the optimal diameter for this equipment to achieve balanced and stable operation. It is suitable for a production line with an annual output of 2 million tons. The original 1100mm diameter balancing device is replaced with the roughing mill main transmission balancing device in this embodiment. Its reinforced transmission balance column 200 has a diameter of 1200mm and is made of high-strength alloy steel to ensure the strength and durability of the equipment under high load. The components are heat-treated and surface hardened to improve the wear resistance and fatigue resistance of the equipment.

[0063] During operation of the replaced roughing mill, stress analysis of the balancing device was conducted using finite element analysis (FEA). The results showed that the equipment exhibited higher safety and reliability under high loads. The PLC control system of the monitoring and control assembly enables automatic adjustment of the balancing adjustment frame 100, ensuring the balancing effect of the equipment under different loads. This allows the mill to better cope with high-load production environments, meeting the production demand of 3 million tons per year and significantly improving production efficiency. Furthermore, the 1200mm diameter balancing structure has a larger contact area and stronger rigidity, effectively reducing vibration and impact during the rolling process and ensuring stable operation of the equipment under high loads.

[0064] The above structure adds a detection terminal, which can monitor and adjust in real time, reduce manual intervention, and improve the automation level and production efficiency of the equipment. The dynamic compensation pad 600 achieves micron-level dynamic compensation through the cooperation of the guide adjustment plate, thereby improving the stability and load-bearing capacity of the equipment. The dry oil lubrication piping group of the balancing device reduces the energy consumption and wear of the equipment by delivering lubricating oil, thereby reducing energy consumption and carbon emissions in the production process, which is in line with the development trend of green manufacturing.

[0065] Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A balancing device for the main drive of a roughing mill, characterized in that: It includes a balance adjustment frame (100), a reinforced transmission balance column (200), a balance device dry oil lubrication piping assembly (300), a detection and control assembly (400), and a dynamic compensation pad frame (600). The detection and control assembly (400) is mounted on the balance adjustment frame (100), and the detection and control assembly (400) is communicatively connected to a detection terminal, which is located on the end side of the reinforced transmission balance column (200). The balance adjustment frame (100) includes an upper balance drive lever assembly (110) and a lower balance drive lever assembly (120). An upper bearing seat (140) is rotatably mounted on the top of the upper balance drive lever assembly (110), and a lower bearing seat (150) is rotatably mounted on the top of the lower balance drive lever assembly (120). Two sets of reinforced transmission balance columns (200) are provided, and the two sets of reinforced transmission balance columns (200) are rotatably mounted on the bearings of the upper bearing seat (140) and the lower bearing seat (150), respectively. The dynamic compensation pad (600) is placed at the bottom of the upper balance drive lever assembly (110) and the lower balance drive lever assembly (120); The balance adjustment frame (100) and the reinforced transmission balance column (200) are provided with a number of lubrication holes (160), and the end of the branch pipe of the dry oil lubrication piping group (300) of the balance device is installed into the lubrication hole (160).

2. The balancing device for the main drive of a roughing mill according to claim 1, characterized in that: The upper balance drive lever assembly (110) includes an upper balance cylinder (111), an upper lifting arm (114), and an upper balance assembly fulcrum (115). One end of the upper lifting arm (114) is rotatably mounted to the upper balance assembly fulcrum (115). The other end of the upper lifting arm (114) is rotatably mounted to an upper pull arm (112) via an upper pull arm shaft (113). The piston rod end of the upper balance cylinder (111) is rotatably mounted to the upper pull arm (112). An upper bearing seat frame (116) is rotatably mounted on the upper lifting arm (114). The upper bearing seat (140) is mounted to the top of the upper bearing seat frame (116) via a bearing seat rotating component.

3. The balancing device for the main drive of a roughing mill according to claim 2, characterized in that: The lower balance drive lever assembly (120) includes a lower balance cylinder (121), a lower lifting arm (123), and a lower balance assembly support frame. One end of the lower lifting arm (123) is rotatably mounted to the lower balance assembly support frame. The other end of the lower lifting arm (123) is rotatably mounted to a lower arm (122) via a lower arm shaft (127). The piston rod end of the lower balance cylinder (121) is rotatably mounted to the lower arm (122). A lower bearing seat frame (124) is rotatably mounted on the lower lifting arm (123). The lower bearing seat (150) is mounted to the top of the lower bearing seat frame (124) via a bearing seat rotating component.

4. The balancing device for the main drive of a roughing mill according to claim 1, characterized in that: The balance adjustment frame (100) also includes a bottom support frame (130), and the upper balance cylinder (111) and the lower balance cylinder (121) are both installed on the balance adjustment frame (100) through a balance cylinder seat (170).

5. A roughing mill main drive balancing device according to claim 1, characterized in that: The dynamic compensation pad (600) includes a locking cylinder (610), an adjusting slide (630), and a guide support (640). A guide adjustment plate (641) is installed on the top of the guide support (640), and a liner (631) corresponding to the position of the guide adjustment plate (641) is installed on the bottom of the adjusting slide (630). The liner (631) is pressed onto the guide adjustment plate (641). The piston rod end of the locking cylinder (610) is connected to the adjusting slide (630) through a cylinder connecting shaft sleeve assembly (620). An outer pad (650) and an intermediate pad (660) are installed on the adjusting slide (630).

6. A roughing mill main drive balancing device according to claim 3, characterized in that: The lower lifting arm (123) is equipped with a bearing shaft (128), the intermediate pad (660) is placed below the bearing shaft (128), and the outer pad (650) is placed below the upper bearing seat (116).

7. A roughing mill main drive balancing device according to claim 3, characterized in that: The bottom support frame (130) is equipped with an upper locking bracket (119) and a lower locking bracket (126). The upper locking bracket (119) and the upper balance drive lever assembly (110) are connected by an upper balance locking rod (117). The lower locking bracket (126) and the lower balance drive lever assembly (120) are connected by a lower balance locking rod (125). A pin (118) is inserted into the upper lifting arm (114). The upper bearing seat frame (116) is provided with a swing hole that matches the pin (118).

8. A roughing mill main drive balancing device according to claim 1, characterized in that: The bearing assembly includes a bushing (141), an inner shaft (142), and a pressure cap (143). The inner shaft (142) is disposed inside the bushing (141), and the pressure cap (143) is pressed onto the bushing (143).

9. A roughing mill main drive balancing device according to claim 1, characterized in that: The detection terminal includes a vibration sensor and a pressure sensor. A monitoring frame (420) is provided on the end side of the reinforced transmission balance column (200). The detection terminal is installed on the monitoring frame (420). The detection control assembly (400) is connected to the detection terminal through a transmission line (410).

10. The reinforced transmission balance column (200) includes a reinforced transmission column body (210), and the two ends of the reinforced transmission column body (210) are equipped with connecting end pieces (230) through universal joints (220).

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