Rolling line adjusting device of twenty-high roll mill

Abstract

The utility model discloses a twenty-high roll mill rolling line adjusting device which comprises a hydraulic cylinder, the end face, close to the piston end, of a cylinder barrel of the hydraulic cylinder is connected with the bottom of a mill base, the piston end of the hydraulic cylinder penetrates through the mill base to stretch into a base side support with an I-shaped longitudinal section, and the piston end of the hydraulic cylinder is connected with one end of a connecting guide rod. The other end of the connecting guide rod is connected with one end of the rolling line rack, the bottom end of the base side support is connected with the rolling mill base through a base support bolt, a sealing mechanism is arranged between the top of the base side support and the connecting guide rod, and a sealing unit is arranged on the outer wall of the connecting guide rod and located between the base side support and the rolling line rack. The device can prevent the hydraulic cylinder from being soaked in lubricating liquid for a long time, is easy to disassemble, and improves the disassembly and replacement efficiency of the rolling line adjusting device.

Description

Technical Field

[0001] This utility model belongs to the field of rolling machinery technology, specifically relating to a rolling line adjustment device for a 20-roll mill. Background Technology

[0002] With the increasing demand for stainless steel and silicon steel, users are placing ever higher demands on rolling mills. The 20-roll mill is the preferred mill for rolling stainless steel and silicon steel. The rolling line adjustment device plays a crucial role in compensating for wear after the rolls have worn down. Due to the compact structure of the 20-roll mill, the rolling line adjustment device is installed at the bottom of the stand and is constantly immersed in process lubricating fluid, resulting in a harsh working environment and a short service life. Furthermore, the compact installation location of the rolling line adjustment device makes disassembly and assembly difficult, leading to lower overall production efficiency of the unit. Utility Model Content

[0003] The purpose of this invention is to provide a rolling line adjustment device for a 20-roll mill, which solves the problem that existing rolling line adjustment devices are often immersed in lubricating fluid and are difficult to disassemble.

[0004] The technical solution adopted in this utility model is a 20-roll mill rolling line adjustment device, including a hydraulic cylinder. The cylinder head end face of the hydraulic cylinder is connected to the bottom of the mill base. The piston rod of the hydraulic cylinder passes through the mill base and extends into the base side support with a longitudinal section of "I". The piston rod of the hydraulic cylinder is connected to one end of a connecting guide rod, and the other end of the connecting guide rod is connected to one end of the rolling line rack. The bottom end of the base side support is connected to the mill base through base support bolts. A sealing mechanism is provided between the top of the base side support and the connecting guide rod. A sealing unit is provided on the outer wall of the connecting guide rod and located between the base side support and the rolling line rack.

[0005] The feature of this utility model is that,

[0006] The sealing mechanism includes a base-side copper sleeve, which is fitted onto the outer wall of the connecting guide rod and inside the base-side bracket. A pressure plate is provided on the top of the base-side copper sleeve, and the pressure plate is connected to the top of the base-side bracket by pressure plate bolts. A base-side sealing ring is provided between the base-side copper sleeve and the connecting guide rod.

[0007] An O-ring is provided between the lower surface of the base side support and the mill base.

[0008] The sealing unit includes a frame base plate, which is sleeved on the connecting guide rod. A frame-side copper sleeve is sleeved between the frame base plate and the connecting guide rod. A frame-side sealing ring is provided between the frame-side copper sleeve and the connecting guide rod. The frame base plate is connected to the rolling mill frame by frame base plate bolts.

[0009] A saddle screw is provided at the end between the copper bushing on the frame side and the base plate of the frame, away from the sealing ring on the frame side.

[0010] The rolling line rack and the connecting guide rod are connected by a pin.

[0011] A clamping plate is connected to the side wall of the rack near the connecting guide rod by clamping plate bolts. A groove is provided on the side wall of the pin shaft along its circumference, and the bottom end of the clamping plate is located in the groove.

[0012] The piston rod of the hydraulic cylinder is connected to the connecting guide rod via a connecting pin.

[0013] The beneficial effects of this utility model are:

[0014] (1) The 20-roll mill rolling line adjustment device of this utility model can prevent the process lubricating fluid in the frame from flowing to the hydraulic cylinder along the connecting guide rod by setting a sealing unit;

[0015] (2) The adjustment device for the 20-roll mill rolling line of this utility model can prevent the process lubricant in the base from seeping out of the base by setting a sealing mechanism;

[0016] (3) The present invention provides a rolling line adjustment device for a 20-roll mill. The installation position of the hydraulic cylinder is changed from between the mill frame and the mill base to below the mill base. The disassembly space is large, which makes it easy to disassemble the hydraulic cylinder, saves maintenance and replacement time, and improves the disassembly and replacement efficiency of the rolling line adjustment device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the 20-roll mill rolling line adjustment device of this utility model;

[0018] Figure 2 This is a schematic diagram of the sealing mechanism in the 20-roll mill rolling line adjustment device of this utility model;

[0019] Figure 3 This is a schematic diagram of the sealing unit in the 20-roll mill rolling line adjustment device of this utility model;

[0020] Figure 4 This is a diagram showing the connection relationship of the clamping plates in the 20-roll mill rolling line adjustment device of this utility model.

[0021] In the diagram, 1. Rolling line rack, 2. Clamping plate bolt, 3. Clamping plate, 4. Pin, 5. Connecting guide rod, 6. Frame base plate bolt, 7. Frame side copper sleeve, 8. Slit bolt, 9. Frame side sealing ring, 10. Pressure plate bolt, 11. Pressure plate, 12. Base side copper sleeve, 13. Base side sealing ring, 14. Base side bracket, 15. Base bracket bolt, 16. Connecting pin, 17. Hydraulic cylinder, 18. O-ring, 19. Rolling mill frame, 20. Frame base plate, 21. Rolling mill base, 22. Slot, 23. Roll, 24. Roll shaft, 25. Roller, 26. Gear tooth. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0023] Example 1

[0024] The 20-roll mill includes a mill base 21, a mill frame 1 mounted on the mill base 21, and a plurality of rolls mounted on the mill frame 1. The two adjacent rolls at the lower position each include a roll 23. The rolls are mounted on a roll shaft 24. A roller 25 is eccentrically mounted on one end of the roll shaft 24. The roller 25 is provided with gear teeth 26. The above structure belongs to the prior art in this field.

[0025] This utility model relates to a rolling line adjustment device for a 20-roll mill, the structure of which is as follows: Figure 1 As shown, the device includes a hydraulic cylinder 17. The head end face of the hydraulic cylinder 17 is connected to the bottom of the rolling mill base 21, meaning the hydraulic cylinder 17 is positioned below the rolling mill base. Compared to the prior art where the hydraulic cylinder 17 is installed between the rolling mill frame 19 and the rolling mill base 21, this increases the disassembly space, thus solving the problem of difficult disassembly of the hydraulic cylinder 19, greatly saving maintenance and replacement time, and improving the efficiency of hydraulic cylinder disassembly and replacement. The piston rod of the hydraulic cylinder 17 passes through the rolling mill base 21 and extends into a longitudinal section with an "I" shape. Inside the base side bracket 14, the piston rod of the hydraulic cylinder 17 is connected to one end of the connecting guide rod 5, and the other end of the connecting guide rod 5 is connected to one end of the rolling line rack 1. The rolling line rack 1 meshes with the gear teeth 26 on the two rotating wheels 25 respectively. The bottom end of the base side bracket 14 is connected to the mill base 21 through the base bracket bolt 15. A sealing mechanism is provided between the top of the base side bracket 14 and the connecting guide rod 5. A sealing unit is provided on the outer wall of the connecting guide rod 5 between the base side bracket 14 and the rolling line rack 1.

[0026] Furthermore, the rolling line rack 1 includes a body, and sharp teeth are provided on both sides of the body. Specifically, the connecting guide rod 5 is connected to one end of the body, the body is disposed between two rotating wheels 25 and the sharp teeth on both sides mesh with the gear teeth 26 on the two rotating wheels 25 respectively.

[0027] The working process of this embodiment is as follows:

[0028] The extension and retraction of the piston rod of the hydraulic cylinder 17 drives the connecting guide rod 5 to move up and down. The connecting guide rod 5 drives the rolling line rack 1 to move up and down. The rolling line rack 1 drives the rotating wheels 25 meshing on both sides to rotate. Since the rotating wheels 25 and the roller shaft 24 are eccentrically installed, the rolling line is adjusted during the rotation.

[0029] Example 2

[0030] This utility model relates to a rolling line adjustment device for a 20-roll mill, the structure of which is as follows: Figure 1 As shown, the device includes a hydraulic cylinder 17. The head end face of the hydraulic cylinder 17 is connected to the bottom of the rolling mill base 21, meaning the hydraulic cylinder 17 is positioned below the rolling mill base. Compared to the prior art where the hydraulic cylinder 17 is installed between the rolling mill frame 19 and the rolling mill base 21, this increases the disassembly space, thus solving the problem of difficult disassembly of the hydraulic cylinder 19, greatly saving maintenance and replacement time, and improving the efficiency of hydraulic cylinder disassembly and replacement. The piston rod of the hydraulic cylinder 17 passes through the rolling mill base 21 and extends into a longitudinal section with an "I" shape. Inside the base side bracket 14, the piston rod of the hydraulic cylinder 17 is connected to one end of the connecting guide rod 5, and the other end of the connecting guide rod 5 is connected to one end of the rolling line rack 1. The rolling line rack 1 meshes with the gear teeth 26 on the two rotating wheels 25 respectively. The bottom end of the base side bracket 14 is connected to the mill base 21 through the base bracket bolt 15. A sealing mechanism is provided between the top of the base side bracket 14 and the connecting guide rod 5. A sealing unit is provided on the outer wall of the connecting guide rod 5 between the base side bracket 14 and the rolling line rack 1.

[0031] The rolling line rack 1 includes a body, and sharp teeth are provided on both sides of the body. Specifically, the connecting guide rod 5 is connected to one end of the body, the body is located between two rotating wheels 25 and the sharp teeth on both sides mesh with the gear teeth 26 on the two rotating wheels 25 respectively.

[0032] Structure as Figure 2 As shown, the sealing mechanism includes a base-side copper sleeve 12, which is fitted onto the outer wall of the connecting guide rod 5 and inside the base-side bracket 14. The top of the base-side copper sleeve 12 is flush with the top of the base-side bracket 14. A pressure plate 11 is provided on the top of the base-side copper sleeve 12. The pressure plate 11 is connected to the top of the base-side bracket 14 by a pressure plate bolt 10. That is, a part of the pressure plate 11 is located on the top of the base-side copper sleeve 12, and the other part is located on the top of the base-side bracket 14. The pressure plate 11 is used to press the base-side copper sleeve 12 tightly inside the base-side bracket 14 to prevent the base-side copper sleeve 12 from coming out. A base-side sealing ring 13 is provided between the base-side copper sleeve 12 and the connecting guide rod 5. The base-side sealing ring 13 prevents the process lubricant in the base from flowing down the connecting guide rod 5 to the hydraulic cylinder 17.

[0033] The working process of this embodiment is as follows:

[0034] The extension and retraction of the piston rod of the hydraulic cylinder 17 drives the connecting guide rod 5 to move up and down. The connecting guide rod 5 drives the rolling line rack 1 to move up and down. The rolling line rack 1 drives the rotating wheels 25 meshing on both sides to rotate. Since the rotating wheels 25 and the roller shaft 24 are eccentrically installed, the rolling line is adjusted during the rotation. At the same time, during the adjustment, the process lubricant in the base flows down along the connecting guide rod 5. Through the sealing barrier of the sealing ring 13 on the side of the base, the process lubricant in the base is prevented from flowing to the hydraulic cylinder 17.

[0035] Example 3

[0036] This utility model relates to a rolling line adjustment device for a 20-roll mill, the structure of which is as follows: Figure 1 As shown, the device includes a hydraulic cylinder 17. The head end face of the hydraulic cylinder 17 is connected to the bottom of the rolling mill base 21, meaning the hydraulic cylinder 17 is positioned below the rolling mill base. Compared to the prior art where the hydraulic cylinder 17 is installed between the rolling mill frame 19 and the rolling mill base 21, this increases the disassembly space, thus solving the problem of difficult disassembly of the hydraulic cylinder 17, greatly saving maintenance and replacement time, and improving the efficiency of hydraulic cylinder disassembly and replacement. The piston rod of the hydraulic cylinder 17 passes through the rolling mill base 21 and extends into a longitudinal section with an "I" shape. Inside the base side bracket 14, the piston rod of the hydraulic cylinder 17 is connected to one end of the connecting guide rod 5, and the other end of the connecting guide rod 5 is connected to one end of the rolling line rack 1. The rolling line rack 1 meshes with the gear teeth 26 on the two rotating wheels 25 respectively. The bottom end of the base side bracket 14 is connected to the mill base 21 through the base bracket bolt 15. A sealing mechanism is provided between the top of the base side bracket 14 and the connecting guide rod 5. A sealing unit is provided on the outer wall of the connecting guide rod 5 between the base side bracket 14 and the rolling line rack 1.

[0037] The rolling line rack 1 includes a body, and sharp teeth are provided on both sides of the body. Specifically, the guide rod 5 is connected to one end of the body, the body is located between two rotating wheels 25 and the sharp teeth on both sides mesh with the gear teeth 26 on the two rotating wheels 25 respectively.

[0038] Structure as Figure 2 As shown, the sealing mechanism includes a base-side copper sleeve 12, which is fitted onto the outer wall of the connecting guide rod 5 and inside the base-side bracket 14. The top of the base-side copper sleeve 12 is flush with the top of the base-side bracket 14. A pressure plate 11 is provided on the top of the base-side copper sleeve 12. The pressure plate 11 is connected to the top of the base-side bracket 14 by a pressure plate bolt 10. That is, a part of the pressure plate 11 is located on the top of the base-side copper sleeve 12, and the other part is located on the top of the base-side bracket 14. The pressure plate 11 is used to press the base-side copper sleeve 12 tightly inside the base-side bracket 14 to prevent the base-side copper sleeve 12 from coming out. A base-side sealing ring 13 is provided between the base-side copper sleeve 12 and the connecting guide rod 5. The base-side sealing ring 13 prevents the process lubricant in the base from flowing down the connecting guide rod 5 to the hydraulic cylinder 17.

[0039] A sealing groove is provided on the lower surface of the base side support 14, and an O-ring 18 is provided in the sealing groove. That is, the O-ring 18 is provided between the lower surface of the base side support 14 and the mill base 21, further preventing the process lubricant in the base from seeping into the hydraulic cylinder 17.

[0040] Example 4

[0041] This utility model relates to a rolling line adjustment device for a 20-roll mill, the structure of which is as follows: Figure 1 As shown, the device includes a hydraulic cylinder 17. The head end face of the hydraulic cylinder 17 is connected to the bottom of the rolling mill base 21, meaning the hydraulic cylinder 17 is positioned below the rolling mill base. Compared to the prior art where the hydraulic cylinder 17 is installed between the rolling mill frame 19 and the rolling mill base 21, this increases the disassembly space, thus solving the problem of difficult disassembly of the hydraulic cylinder 19, greatly saving maintenance and replacement time, and improving the efficiency of hydraulic cylinder disassembly and replacement. The piston rod of the hydraulic cylinder 17 passes through the rolling mill base 21 and extends into a longitudinal section with an "I" shape. Inside the base side bracket 14, the piston rod of the hydraulic cylinder 17 is connected to one end of the connecting guide rod 5, and the other end of the connecting guide rod 5 is connected to one end of the rolling line rack 1. The rolling line rack 1 meshes with the gear teeth 26 on the two rotating wheels 25 respectively. The bottom end of the base side bracket 14 is connected to the mill base 21 through the base bracket bolt 15. A sealing mechanism is provided between the top of the base side bracket 14 and the connecting guide rod 5. A sealing unit is provided on the outer wall of the connecting guide rod 5 between the base side bracket 14 and the rolling line rack 1.

[0042] The rolling line rack 1 includes a body, and sharp teeth are provided on both sides of the body. Specifically, the guide rod 5 is connected to one end of the body, the body is located between two rotating wheels 25 and the sharp teeth on both sides mesh with the gear teeth 26 on the two rotating wheels 25 respectively.

[0043] Structure as Figure 2 As shown, the sealing mechanism includes a base-side copper sleeve 12, which is fitted onto the outer wall of the connecting guide rod 5 and inside the base-side bracket 14. The top of the base-side copper sleeve 12 is flush with the top of the base-side bracket 14. A pressure plate 11 is provided on the top of the base-side copper sleeve 12. The pressure plate 11 is connected to the top of the base-side bracket 14 by a pressure plate bolt 10. That is, a part of the pressure plate 11 is located on the top of the base-side copper sleeve 12, and the other part is located on the top of the base-side bracket 14. The pressure plate 11 is used to press the base-side copper sleeve 12 tightly inside the base-side bracket 14 to prevent the base-side copper sleeve 12 from coming out. A base-side sealing ring 13 is provided between the base-side copper sleeve 12 and the connecting guide rod 5. The base-side sealing ring 13 prevents the process lubricant in the base from flowing down the connecting guide rod 5 to the hydraulic cylinder 17.

[0044] A sealing groove is provided on the lower surface of the base side support 14, and an O-ring 18 is provided in the sealing groove. That is, the O-ring 18 is provided between the lower surface of the base side support 14 and the mill base 21, further preventing the process lubricant in the base from seeping into the hydraulic cylinder 17.

[0045] Structure as Figure 3As shown, the sealing unit includes a frame base plate 20, which is sleeved on the connecting guide rod 5. A frame-side copper sleeve 7 is sleeved between the frame base plate 20 and the connecting guide rod 5. A frame-side sealing ring 9 is provided between the frame-side copper sleeve 7 and the connecting guide rod 5. The frame-side sealing ring 9 prevents the process lubricant in the frame from flowing along the connecting guide rod 5 to the hydraulic cylinder 17. The frame base plate 20 is connected to the rolling mill frame 19 by frame base plate bolts 6.

[0046] The working process of this embodiment is as follows:

[0047] The extension and retraction of the piston end of the hydraulic cylinder 17 drives the connecting guide rod 5 to move up and down. The connecting guide rod 5 drives the rolling line rack 1 to move up and down. The rolling line rack 1 drives the rotating wheels 25 meshing on both sides to rotate. Since the rotating wheels 25 and the roller shaft 24 are eccentrically installed, the rolling line is adjusted during the rotation. At the same time, during the adjustment, the process lubricating fluid in the base flows downward along the connecting guide rod 5 and passes through the sealing barrier of the base side sealing ring 13, thereby preventing the process lubricating fluid in the base from flowing onto the hydraulic cylinder 17. The process lubricating fluid in the frame flows downward along the connecting guide rod 5 and passes through the sealing barrier of the frame side sealing ring 9, thereby preventing the process lubricating fluid in the frame from flowing onto the hydraulic cylinder 17.

[0048] Example 5

[0049] Based on embodiment 4, a saddle screw 8 is provided at one end between the frame-side copper sleeve 7 and the frame base plate 20 and away from the frame-side sealing ring 9. The saddle screw 8 is used to fix the frame-side copper sleeve 7 to the frame base plate 20 to prevent the frame-side copper sleeve 7 from coming off.

[0050] Example 6

[0051] This utility model relates to a rolling line adjustment device for a 20-roll mill, the structure of which is as follows: Figure 1 As shown, the device includes a hydraulic cylinder 17. The head end face of the hydraulic cylinder 17 is connected to the bottom of the rolling mill base 21, meaning the hydraulic cylinder 17 is positioned below the rolling mill base. Compared to the prior art where the hydraulic cylinder 17 is installed between the rolling mill frame 19 and the rolling mill base 21, this increases the disassembly space, thus solving the problem of difficult disassembly of the hydraulic cylinder 19, greatly saving maintenance and replacement time, and improving the efficiency of hydraulic cylinder disassembly and replacement. The piston rod of the hydraulic cylinder 17 passes through the rolling mill base 21 and extends into a longitudinal section with an "I" shape. Inside the base side bracket 14, the piston rod of the hydraulic cylinder 17 is connected to one end of the connecting guide rod 5, and the other end of the connecting guide rod 5 is connected to one end of the rolling line rack 1. The rolling line rack 1 meshes with the gear teeth 26 on the two rotating wheels 25 respectively. The bottom end of the base side bracket 14 is connected to the mill base 21 through the base bracket bolt 15. A sealing mechanism is provided between the top of the base side bracket 14 and the connecting guide rod 5. A sealing unit is provided on the outer wall of the connecting guide rod 5 between the base side bracket 14 and the rolling line rack 1.

[0052] The rolling line rack 1 includes a body, and sharp teeth are provided on both sides of the body. Specifically, the guide rod 5 is connected to one end of the body, the body is located between two rotating wheels 25 and the sharp teeth on both sides mesh with the gear teeth 26 on the two rotating wheels 25 respectively.

[0053] Structure as Figure 2 As shown, the sealing mechanism includes a base-side copper sleeve 12, which is fitted onto the outer wall of the connecting guide rod 5 and inside the base-side bracket 14. The top of the base-side copper sleeve 12 is flush with the top of the base-side bracket 14. A pressure plate 11 is provided on the top of the base-side copper sleeve 12. The pressure plate 11 is connected to the top of the base-side bracket 14 by a pressure plate bolt 10. That is, a part of the pressure plate 11 is located on the top of the base-side copper sleeve 12, and the other part is located on the top of the base-side bracket 14. The pressure plate 11 is used to press the base-side copper sleeve 12 tightly inside the base-side bracket 14 to prevent the base-side copper sleeve 12 from coming out. A base-side sealing ring 13 is provided between the base-side copper sleeve 12 and the connecting guide rod 5. The base-side sealing ring 13 prevents the process lubricant in the base from flowing down the connecting guide rod 5 to the hydraulic cylinder 17.

[0054] A sealing groove is provided on the lower surface of the base side support 14, and an O-ring 18 is provided in the sealing groove. That is, the O-ring 18 is provided between the lower surface of the base side support 14 and the mill base 21, further preventing the process lubricant in the base from seeping into the hydraulic cylinder 17.

[0055] Structure as Figure 3 As shown, the sealing unit includes a frame base plate 20, which is sleeved on the connecting guide rod 5. A frame-side copper sleeve 7 is sleeved between the frame base plate 20 and the connecting guide rod 5. A frame-side sealing ring 9 is provided between the frame-side copper sleeve 7 and the connecting guide rod 5. The frame-side sealing ring 9 prevents the process lubricant in the frame from flowing along the connecting guide rod 5 to the hydraulic cylinder 17. The frame base plate 20 is connected to the rolling mill frame 19 by frame base plate bolts 6.

[0056] Structure as Figure 4 As shown, the rolling line rack 1 and the connecting guide rod 5 are connected by a pin 4. A clamping plate 3 is connected to the side wall of the rolling line rack 1 near the connecting guide rod 5 by several clamping bolts 2. That is, the clamping plate 3 is fastened to the side wall of the rolling line rack 1 by several clamping bolts 2. A groove 22 is provided on the side wall of the pin 4 along its circumference. The bottom end of the clamping plate 3 is set in the groove 22. The clamping plate 3 is used to prevent the rolling line rack 1 from disengaging from the connecting guide rod 5.

[0057] Example 7

[0058] Based on embodiment 6, the piston rod of hydraulic cylinder 17 is connected to connecting guide rod 5 via connecting pin 16 for easy disassembly.

[0059] This utility model relates to a 20-roll mill rolling line adjustment device. The hydraulic cylinder is installed at the bottom of the mill base, which increases the disassembly space. By setting copper sleeves on the frame side, sealing rings on the frame side, copper sleeves on the base side, and sealing rings on the base side, the process lubricant is effectively prevented from flowing into the hydraulic cylinder along the adjustment guide rod. By setting O-rings, the lubricant is prevented from seeping out from the mating surface between the base side support and the mill base.

Claims

1. A 20-high rolling mill rolling line adjustment device, characterized by, The hydraulic cylinder (17) is connected with the bottom of the rolling mill base (21) through the cylinder head end face, the piston rod of the hydraulic cylinder (17) extends into the base side support (14) with a longitudinal section of a "H" type through the rolling mill base (21), one end of the connecting guide rod (5) is connected with the piston rod of the hydraulic cylinder (17), the other end of the connecting guide rod (5) is connected with one end of the rolling line rack (1), the bottom end of the base side support (14) is connected with the rolling mill base (21) through the base support bolt (15), the sealing mechanism is arranged between the top of the base side support (14) and the connecting guide rod (5), and the sealing unit is arranged on the outer wall of the connecting guide rod (5) and between the base side support (14) and the rolling line rack (1).

2. The twenty-stand rolling mill train adjustment apparatus according to claim 1, characterized by, The sealing mechanism comprises a base side copper sleeve (12), the base side copper sleeve (12) is sleeved on the outer wall of the connecting guide rod (5), the base side copper sleeve (12) is sleeved in the base side support (14), the top of the base side copper sleeve (12) is provided with a pressing plate (11), the pressing plate (11) is connected with the top of the base side support (14) through the pressing plate bolt (10), and the base side copper sleeve (12) and the connecting guide rod (5) are provided with a base side sealing ring (13).

3. The twenty-stand rolling mill train adjustment apparatus according to claim 2, characterized in that, An O-shaped ring (18) is arranged between the lower surface of the base side support (14) and the rolling mill base (21).

4. The twenty-stand rolling mill train adjustment apparatus according to claim 1, characterized by, The sealing unit comprises a rack bottom plate (20), the rack bottom plate (20) is sleeved on the connecting guide rod (5), a rack side copper sleeve (7) is sleeved between the rack bottom plate (20) and the connecting guide rod (5), a rack side sealing ring (9) is arranged between the rack side copper sleeve (7) and the connecting guide rod (5), and the rack bottom plate (20) is connected with the rolling mill rack (19) through the rack bottom plate bolt (6).

5. The twenty-stand rolling mill train adjustment apparatus according to claim 4, characterized in that, A seam screw (8) is arranged between the rack side copper sleeve (7) and the rack bottom plate (20) and away from one end of the rack side sealing ring (9).

6. The twenty-stand rolling mill train adjustment apparatus of claim 1, wherein, The rolling line rack (1) and the connecting guide rod (5) are connected through the pin shaft (4).

7. The twenty-stand rolling mill train adjustment apparatus according to claim 6, characterized in that, The end wall of the rolling line rack (1) close to the connecting guide rod (5) is connected with a clamping plate (3) through a clamping plate bolt (2), a clamping groove (22) is arranged on the end wall of the pin shaft (4) and along the circumferential direction of the pin shaft (4), and the bottom end of the clamping plate (3) is arranged in the clamping groove (22).

8. The twenty-stand rolling mill train adjustment apparatus according to claim 1, characterized by, The piston rod of the hydraulic cylinder (17) is connected with the connecting guide rod (5) through the connecting pin (16).

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