Improved rolling mill vertical loop device

Abstract

The utility model discloses an improved vertical loop device of a rolling mill, which is characterized in that a first side outlet compression roller mechanism is arranged at a rolled piece inlet in a sleeve body, and a second side outlet compression roller mechanism is arranged at a rolled piece outlet; roller guide grooves are formed in the lower portions of the two side walls of the sleeve body located behind the first side outlet pressing roller mechanism, and stand columns of an air cylinder support are fixedly installed on the upper portions of the two side walls of a rolled piece inlet; and the outer sides of the two side walls below the sleeve body rolled piece inlet are provided with sleeve rising roller mechanisms. According to the compression roller mechanism, a fixing mode of a horizontal bearing seat in an original compression roller mechanism is changed into a fixing mode of the square cover and the wedge, so that the stress direction of the screw is changed, and the compression roller mechanism is convenient to disassemble and assemble. Meanwhile, a single rocker arm of an original single-arm loop rising roller mechanism is changed into a double-swing-arm structure, a driving air cylinder is installed over a rolled piece inlet instead of being installed on the side, the stress mode of a roller wheel assembly in the loop rising roller mechanism is changed into a balanced mode from a cantilever mode, single-side abrasion of roller wheels is reduced, work of a vertical loop is stable, and steel running accidents of a rolling line are controlled.

Description

Technical Field

[0001] This utility model relates to a looper transmission device between bar rolling mill production lines, and particularly to an improved vertical looper device for rolling mills. Background Technology

[0002] Steel rolling production lines mainly roll long products such as ribbed steel bars or round bars. A vertical looper is installed between every two mill stands in the intermediate and finishing mill areas. Vertical loopers are widely used in steel rolling production lines, serving to adjust the stock configuration and pull the steel between the mills. Existing vertical loopers consist of a sleeve body 3, a single-arm lifting roller mechanism 02, and pressure roller mechanisms 01 at the inlet and outlet of the rolled product (e.g., ...). Figures 1-3 (As shown). The sleeve 3 is made of welded steel plates, with steel plates on both sides and bottom forming guide grooves for steel passage. A pressure roller mechanism 01 is fixed at both ends of the workpiece inlet and outlet of the sleeve 3. A single-arm lifting roller mechanism 02 on one side of the sleeve 3 is located between the two pressure roller mechanisms 01. The lifting roller on the rocker arm 03 is driven up and down by the cylinder 4 installed on the outside of the sleeve 3, thereby lifting the workpiece and smoothly achieving lifting.

[0003] Under the action of the single-arm lifting roller mechanism 02 and the two front and rear pressure roller mechanisms 01, the workpiece is pushed into an arc shape with an upward arch in the middle. Since all three rollers are free rollers, they rotate at high speed driven by the workpiece. The two pressure roller mechanisms 01 are always subjected to upward force, and the bearing seat bolts that fix the pressure rollers are often loosened due to tension, leading to failure. Moreover, the pressure rollers on the pressure roller mechanism 01 are wear parts. When replacing them, it is necessary to disassemble and install the bearing seat bolts. However, since the bolts are constantly under the action of the workpiece cooling water, they are often difficult to disassemble and are forced to be cut off and then fixed by welding, which affects production time by at least 30 minutes. Meanwhile, the drive cylinder 4 of the single-arm lifting roller mechanism 02 is fixedly installed on the outer side of the sleeve body 3. The two bearings of the lifting roller are installed in a cantilever structure inside the rocker arm 03. Therefore, when the cylinder 4 pulls the rocker arm 03 upward from outside the sleeve body 3, the single-arm lifting roller mechanism 02 located in the middle of the sleeve body 3 is subjected to downward pressure from the rolled piece. At this time, the single-arm lifting roller mechanism 02 is subjected to unbalanced forces, which will cause the roller axis on the single-arm lifting roller mechanism 02 to tilt horizontally downward (that is, the roller axis located inside the sleeve body 3 is horizontally lower, and the roller axis located outside the sleeve body 3 is horizontally higher), which will lead to production accidents such as workpiece deviation and steel slippage. Under the long-term unbalanced forces, the wear of the rocker arm 03 shaft of the single-arm lifting roller mechanism 02 will accelerate. Once the wear clearance of the shaft increases, the tilt of the lifting roller in the single-arm lifting roller mechanism 02 will be more serious, resulting in very frequent replacement of the lifting roller. The general life of the lifting roller is no more than three days, and the replacement time is at least 40 minutes. Therefore, the instability of the vertical looper operation is also a major factor causing steel slippage in the looper. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an improved vertical looper device for rolling mills, which facilitates the disassembly and assembly of pressure rollers, shortens maintenance and replacement time, changes the force distribution mode of the looper rollers from cantilever type to balanced type, ensures stable operation of the vertical looper, controls the occurrence of steel run-off accidents on the rolling line, and improves production efficiency.

[0005] The purpose of this utility model is achieved as follows: An improved rolling mill vertical looper device includes a looper body, a first side exit pressure roller mechanism installed at the workpiece inlet inside the looper body, and a second side exit pressure roller mechanism installed at the workpiece outlet; roller guide grooves are provided below the two side walls of the looper body behind the first side exit pressure roller mechanism; cylinder support columns are fixedly installed above the two side walls at the workpiece inlet; a looper lifting roller mechanism is installed on the outer side of the two side walls below the workpiece inlet of the looper body;

[0006] Both the first and second side-exit pressure roller mechanisms include roller assemblies. The roller assembly has four symmetrical inward-facing steps at both ends of the roller shaft: the first step is a handle section, the second is a square step, the third is a bearing step, and the fourth is a retaining ring. The bearing step has a bearing and a water-blocking ring installed between the inner retaining ring and the outer end. The water-blocking ring has a central sleeve, the inner hole of which connects to the bearing step. The outer circumference of the sleeve is disc-shaped, with an inwardly protruding edge that is embedded in the step groove at the outer end of the roller. The inner surface of the bearing connects to the retaining ring, the outer surface connects to the sleeve of the water-blocking ring, and the outer circumference of the bearing connects to the inner step of the roller. An oil cup is installed at one end of the roller shaft, and the oil cup communicates with the inner cavity formed by the water-blocking ring and the inner hole of the roller assembly through an internal oil passage in the roller shaft.

[0007] The outer wall of the sleeve equipped with the first and second side pressure roller mechanisms has a through hole, the diameter of which is slightly larger than the outer diameter of the roller. The outer periphery of the through hole has threaded holes corresponding to the round holes at the four corners of the square cover. The square cover on one side of the sleeve is connected to the threaded hole on the sleeve by screws, while the square cover on the other side is connected to the threaded hole on the sleeve by a screw at the inner end of a fixing pin passing through the round holes at the four corners of the square cover. The outer end of the fixing pin has a rectangular oblique groove, through which an oblique wedge is engaged with the outer side of the round holes at the four corners of the square cover. A "7" plate is installed between the two outer surfaces of the sleeve and the square cover. The center of the square cover has a square shaft hole, which matches and connects with the square step in the middle of the roller shaft.

[0008] The lifting roller mechanism includes supports located at the bottom of the two outer sides at the entrance of the sleeve workpiece. Bearing seats are mounted on the supports, and oil cups are installed above the bearing seats. Sliding bearings are installed inside the bearing seats. A synchronous shaft connects the two bearing seats. A flat key is provided on the synchronous shaft. A connecting arm sleeve is fitted around the outer circumference of the synchronous shaft via the flat key. The two ends of the connecting arm sleeve are symmetrically connected to one end of a "Z"-shaped swing arm on one side of their outer circumference. A shaft hole is provided in the middle section of the swing arm. A pin installed in this shaft hole connects to the lower end of the adjusting rod of the balance rod. The upper end of the adjusting rod passes through the through holes at both ends of the balance beam and is fixedly connected by adjusting nuts. A joint is provided above the middle position of the balance beam. The joint is connected to a cylinder via a piston rod. The upper end of the cylinder is hinged to the upper beam lifting lug of the cylinder bracket. The two ends of the upper beam... The top of the column is connected to the inner side of the two columns and the upper side of the outer wall of the sleeve is connected to the inner side of the column via a connecting plate. The other end of the swing arm is fixed with a roller bracket by bolts. The bottom plate of the roller bracket is rectangular and has a cooling water pipe in the middle. A spray hole is set above the middle section of the cooling water pipe. A plug is installed at one end of the cooling water pipe and the other end is connected to the water inlet pipe. Drainage holes are set on the bottom plate on both sides of the cooling water pipe. U-shaped plates with square grooves are symmetrically set at both ends of the bottom plate. Ribs are set on both outer sides of the U-shaped plates and the lower edge of the ribs is connected to the outer edge of the bottom plate. The roller bracket is connected to the square steps at both ends of the roller shaft in the roller assembly through the square groove of the U-shaped plate. The roller is located between the two inner walls of the roller guide groove of the sleeve and the outer diameter of the roller is slightly smaller than the width of the roller guide groove.

[0009] Furthermore, the handle section of the roller shaft serves as a hand grip for disassembling the roller shaft.

[0010] Furthermore, roller assemblies are installed in the first side-out pressure roller mechanism, the second side-out pressure roller mechanism, or the starting roller mechanism.

[0011] Furthermore, the connecting arm sleeve in the swing arm is connected to the synchronous shaft by an interference fit.

[0012] This invention changes the original horizontal bearing seat fixing method in the pressure roller mechanism by replacing it with a square cover and wedge fixing, which alters the force direction of the screw and facilitates disassembly and assembly. Simultaneously, the original single-arm lifting roller mechanism's single rocker arm is replaced with a double-rocker arm structure, and the drive cylinder is changed from side-mounted to mounted directly above the workpiece inlet. This changes the force distribution of the roller assembly in the lifting roller mechanism from a cantilever type to a balanced type, reducing unilateral wear of the rollers, stabilizing the vertical looper operation, and controlling steel run-off accidents on the rolling line. Attached Figure Description

[0013] Figure 1 This is the main view of the existing vertical loop structure;

[0014] Figure 2 This is a top view of the existing vertical loop structure;

[0015] Figure 3 This is a side view of the existing vertical loop structure;

[0016] Figure 4 Main view of the structure of this utility model;

[0017] Figure 5 Top view of a partial cross-sectional structure of this utility model;

[0018] Figure 6 Side view of the structure of this utility model;

[0019] Figure 7 This is a schematic cross-sectional view of the side-exit pressure roller mechanism in this utility model;

[0020] Figure 8 yes Figure 7 Side view;

[0021] Figure 9 This is a schematic cross-sectional view of the roller assembly 11 in this utility model;

[0022] Figure 10 This is the main structural view of the lifting roller mechanism 2 in this utility model.

[0023] Figure 11 yes Figure 10 Top view;

[0024] Figure 12 This is a schematic diagram of the roller support 27 in this utility model.

[0025] Figure 13 yes Figure 12 Top view;

[0026] Figure 14 yes Figure 12 A schematic diagram of the AA-direction cross-sectional structure;

[0027] Figure 15 This is a schematic diagram of the balance rod 6 of this utility model.

[0028] In the diagram: 01. Pressure roller mechanism, 02. Single-arm lifting roller mechanism, 03. Rocker arm;

[0029] 101. First side pressure roller mechanism; 102. Second side pressure roller mechanism; 11. Roller assembly; 111. Shaft oil cup; 112. Roller shaft; 113. Water baffle ring; 114. Bearing; 115. Roller; 12. Fixing pin; 13. Wedge; 14. Square cover; 15. "7" plate; 16. Screw;

[0030] 2. Roller lifting mechanism; 21. Synchronous shaft; 22. Support; 23. Bearing housing; 231. Sliding bearing; 24. Oil cup; 25. Swing arm; 251. Connecting arm sleeve; 26. Pin; 27. Roller bracket; 271. Cooling water pipe; 272. Base plate; 273. Rib plate; 274. U-shaped plate; 275. Plug; 276. Water spray hole; 277. Drain hole; 28. Bolt; 29. ​​Flat key;

[0031] 3. Sleeve body; 31. Roller guide groove;

[0032] 4. Cylinder; 41. Piston rod;

[0033] 5. Cylinder bracket; 51. Upper beam; 52. Column; 53. Connecting plate;

[0034] 6. Balance rod, 61. Connector, 62. Adjusting rod, 63. Adjusting nut, 64. Balance beam, 65. Connector. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. See also... Figures 4 to 15 An improved rolling mill vertical looper includes a sleeve body 3. A first side-exit pressure roller mechanism 101 is installed at the workpiece inlet within the sleeve body 3, and a second side-exit pressure roller mechanism 102 is installed at the workpiece outlet. Roller guide grooves 31 are provided below the two side walls of the sleeve body 3 behind the first side-exit pressure roller mechanism 101. Columns 52 of cylinder brackets 5 are fixedly installed above the two side walls at the workpiece inlet. A lifting roller mechanism 2 (e.g., ...) is installed on the outer side of the two side walls below the workpiece inlet of the sleeve body 3. Figure 4 , 5 and Figure 6 (as shown)

[0036] Both the first side-out pressure roller mechanism 101 and the second side-out pressure roller mechanism 102 include roller assemblies 11 (e.g. Figure 7 and Figure 9As shown), the roller assembly 11 has four steps symmetrically arranged inward from both ends of the roller shaft 112: the first step is a handle section, serving as a hand handle for disassembling the roller shaft 112; the second step is a square step; the third step is a bearing step; and the fourth step is a retaining ring. The bearing step has a bearing 114 and a water-blocking ring 113 installed between the inner retaining ring and the outer end. The water-blocking ring 113 has a ring sleeve in the middle, the inner hole of which connects to the bearing step, and the outer circumference of the ring sleeve is a disc. The roller 112 has a disc-shaped outer periphery with an inwardly protruding edge, which is embedded in the stepped groove at the outer end of the roller 115; the inner side of the bearing 114 is connected to the retaining ring, and the outer side is connected to the ring sleeve of the water-blocking ring 113. The outer periphery of the bearing 114 is connected to the inner step of the roller 115; one end of the roller shaft 112 is equipped with an oil cup 111, which communicates with the inner cavity formed by the water-blocking ring 113 and the inner hole of the roller 115 in the roller assembly 11 through the oil passage in the roller shaft 112.

[0037] The outer wall of the sleeve 3, which is equipped with the first side pressure roller mechanism 101 and the second side pressure roller mechanism 102, is provided with a through hole. The diameter of the through hole is slightly larger than the outer diameter of the roller 115. Threaded holes corresponding to the round holes at the four corners of the square cover 14 are provided on the outer periphery of the through hole. The square cover 14 on one side of the sleeve 3 is connected to the threaded hole on the sleeve 3 by a screw 16. The square cover 14 on the other side is connected to the threaded hole on the sleeve 3 by a screw at the inner end of a fixing pin 12 passing through the round holes at the four corners of the square cover 14. A rectangular inclined groove is provided at the outer end of the fixing pin 12, and an inclined wedge 13 is fitted onto the outside of the round holes at the four corners of the square cover 14 through the inclined groove. A "7" plate 15 is installed between the two outer sides of the sleeve 3 and the square cover 14. A square shaft hole is provided in the center of the square cover 14, and the square shaft hole matches and connects with the square step in the middle of the roller 112 (e.g., ...). Figure 7 and Figure 8 (as shown)

[0038] The lifting roller mechanism 2 includes supports 22 located at the bottom of the two outer sides of the entry point of the sleeve 3 (e.g., ...). Figure 4 and Figure 6 As shown), a bearing housing 23 is mounted on the support 22 (as shown). Figure 10 and Figure 11 As shown), an oil cup 24 is provided above the bearing housing 23, and a sliding bearing 231 is installed inside. A synchronous shaft 21 is connected between the two bearing housings 23. A flat key 29 is provided on the synchronous shaft 21. A connecting arm sleeve 251 is fitted around the outer circumference of the synchronous shaft 21 through the flat key 29. The connecting arm sleeve 251 is connected to the synchronous shaft 21 by an interference fit. One end of a "Z"-shaped swing arm 25 is symmetrically connected to the outer circumference of both ends of the connecting arm sleeve 251. A shaft hole is provided in the middle section of the swing arm 25. A pin 26 installed in the shaft hole is connected to the lower end joint 61 of the adjusting rod 62 of the balance rod 6. The upper end of the adjusting rod 62 passes through the through holes at both ends of the balance beam 64 and is fixedly connected by the adjusting nut 63 (as shown). Figure 15As shown), a connector 65 is provided above the middle position of the balance beam 64. The connector 65 is connected to the cylinder 4 via the piston rod 41. The upper end of the cylinder 4 is hinged to the lifting lug of the upper beam 51 of the cylinder bracket 5. The two ends of the upper beam 51 are connected to the top of the column 52. The inner sides of the two columns 52 are connected to the upper side of the outer wall of the sleeve 3 via the connecting plate 53 (as shown). Figure 4 and Figure 6 As shown); the other end of the swing arm 25 is fixedly mounted with a roller bracket 27 (as shown) by bolts 28. Figure 10 and Figure 11 As shown), the base plate 272 of the roller support 27 is rectangular and has a cooling water pipe 271 in the middle (as shown). Figure 12 , 13 and Figure 14 As shown), a spray hole 276 is provided above the middle section of the cooling water pipe 271. A plug 275 is installed at one end of the cooling water pipe 271, and the other end is connected to the inlet pipe. Drain holes 277 are provided on the bottom plates 272 on both sides of the cooling water pipe 271. U-shaped plates 274 with square grooves are symmetrically arranged at both ends of the bottom plate 272. Ribs 273 are provided on both outer sides of the U-shaped plates 274, and the lower edge of the ribs 273 is connected to the outer edge of the bottom plate 272. The roller bracket 27 is connected to the square steps at both ends of the roller shaft 112 in the roller assembly 11 through the square groove of the U-shaped plate 274 (as shown). Figure 10 (As shown); Roller 115 is located between the two inner walls of roller guide groove 31 of sleeve 3, and the outer diameter of roller 115 is slightly smaller than the width of the groove of roller guide groove 31.

[0039] Roller assemblies 11 (e.g., roller assembly 11) are installed in the first side-out pressure roller mechanism 101, the second side-out pressure roller mechanism 102, or the lifting roller mechanism 2. Figure 7 , 9 10 and Figure 11 (As shown). Example

[0040] After the improvement of the original vertical looper equipment by this utility model, the position of the roller assembly 11 on the lifting roller mechanism 2 needs to be adjusted during the initial installation to ensure that the outer apex of the roller 115 is flush with or slightly higher than the bottom plate of the guide groove in the sleeve body 3. The adjustment method is to adjust the nut 63 and the pull rod 62 in the balance rod 6 to drive the joint 61 to rise and fall, and then drive the swing arm 25 in the lifting roller mechanism 2 to swing through the pin 26 to achieve the purpose of adjusting the height of the roller assembly 11.

[0041] After the improvement of this utility model, the roller assemblies 11 in the front and rear sets of side-exit pressure roller mechanisms (i.e., the first side-exit pressure roller mechanism 101 and the second side-exit pressure roller mechanism 102) are interchangeable with the roller assembly 11 in the lifting roller mechanism 2. In other words, the improved vertical looper has a total of three sets of roller assemblies 11, reducing the number of spare parts and lowering spare parts inventory. The lifespan of the vulnerable roller assembly 11 is extended, mainly because:

[0042] 1) Under the action of the "7" plate 15 locking the square cover 14, the roller assemblies 11 of the first and second side pressure roller mechanisms 101 and 102 are not subjected to tension or shear force, resulting in a very stable structure that is not easy to loosen. This means that the roller assemblies 11 of the first and second side pressure roller mechanisms 101 and 102, which originally had a lifespan of only one week, can now last for at least half a month. Furthermore, the wedge structure designed on the operating side makes replacement more convenient and faster. This area of ​​the equipment is in contact with red steel, with a large amount of cooling water, and all the bolts on the equipment are difficult to disassemble due to corrosion. Therefore, the wedge structure is the most practical. When replacing the roller assembly 11, the operator only needs to use a small hammer to knock out the wedge 13 among the four fixing pins 12, remove the square cover 14 on the operating side, and the roller assembly 11 can be pulled out from the operating side for replacement. The installation process is simply the reverse of the above process, which is simple and convenient. Replacing a roller assembly 11 takes no more than 5 minutes, and the maintenance efficiency is 6 times that of the original.

[0043] 2) The replacement of the roller assembly 11 in the lifting roller mechanism 2 is simpler. Since the upper part of the U-shaped plate 274 that fixes the roller assembly 11 is open, the roller assembly 11 can be taken out directly by holding the first step handle section of the roller shaft 112 upwards without the need for any tools. Therefore, the replacement time is generally no more than 4 minutes, the maintenance efficiency is 10 times that of the original, and the service life is twice that of the original.

[0044] In summary, after the above embodiments, the improved invention reduces the consumption of vulnerable parts by more than half, improves maintenance efficiency, and significantly reduces equipment maintenance workload. The equipment structure and operation are more stable, and production accidents such as roll deviation and looper runaway are greatly reduced.

Claims

1. An improved rolling mill vertical looper device, comprising a looper body (3), characterized in that: A first side pressure roller mechanism (101) is installed at the rolled piece entrance in the sleeve (3), and a second side pressure roller mechanism (102) is installed at the rolled piece exit; roller guide grooves (31) are provided below the two side walls of the sleeve (3) behind the first side pressure roller mechanism (101), and columns (52) of a cylinder support (5) are fixedly installed above the two side walls at the rolled piece entrance; and a sleeve lifting roller mechanism (2) is installed outside the two side walls below the rolled piece entrance of the sleeve (3); The first side-exit pressure roller mechanism (101) and the second side-exit pressure roller mechanism (102) both comprise a roller assembly (11), wherein four steps are symmetrically arranged inwardly at both ends of a roller shaft (112) of the roller assembly (11): the first step is a handle section, the second step is a square step, the third step is a bearing step, and the fourth step is a retaining ring; wherein a bearing (114) and a water retaining ring (113) are installed between the retaining ring at the inner end and the outer end of the bearing step; a ring sleeve is arranged in the middle of the water retaining ring (113), the inner hole of the ring sleeve is connected to the bearing step, and the outer hole of the ring sleeve is connected to the outer hole of the ring sleeve. The bearing (114) is in the shape of a disk, and the outer circumference of the disk is provided with a disk edge protruding inwardly, and the disk edge is embedded in the step groove at the outer end of the roller (115); the inner side surface of the bearing (114) is connected to the retaining ring, and the outer side surface is connected to the ring sleeve of the water retaining ring (113), and the outer circumference of the bearing (114) is connected to the inner step of the roller (115); an axial oil cup (111) is installed at one end of the roller shaft (112), and the axial oil cup (111) is connected to the inner cavity formed by the water retaining ring (113) in the roller assembly (11) and the inner hole of the roller (115) through the oil passage in the roller shaft (112); The outer wall of the sleeve (3) on which the first side pressure roller mechanism (101) and the second side pressure roller mechanism (102) are installed is provided with a through hole, the diameter of the through hole is slightly larger than the outer diameter of the roller (115), and the outer periphery of the through hole is provided with threaded holes corresponding to the round holes at the four corners of the square cover (14); the square cover (14) on one side of the sleeve (3) is connected to the threaded hole on the sleeve (3) by means of a screw (16), and the square cover (14) on the other side is fixed by means of the inner end of the fixing pin (12) The screw rod passes through the circular holes at the four corners of the square cover (14) and is connected to the threaded holes on the sleeve body (3); the outer end of the fixing pin (12) is provided with a rectangular inclined groove, and the inclined wedge (13) is clamped on the outer side of the circular holes at the four corners of the square cover (14) through the inclined groove; "7"-shaped plates (15) are installed between the two outer side surfaces of the sleeve body (3) and the square cover (14); a square shaft hole is provided in the center of the square cover (14), and the square shaft hole is matched and connected with the square step in the middle of the roller shaft (112); The sleeve lifting roller mechanism (2) comprises a support (22) located at the bottom of both outer sides of the sleeve body (3) at the entrance of the rolled piece, a bearing seat (23) being mounted on the support (22), an oil cup (24) being arranged above the bearing seat (23), a sliding bearing (231) being arranged inside, a synchronous shaft (21) being connected between the two bearing seats (23), a flat key (29) being arranged on the synchronous shaft (21), a connecting arm sleeve (251) being sleeved on the outer periphery of the synchronous shaft (21) via the flat key (29), and both ends of the connecting arm sleeve (251) being symmetrically connected to a "Z"-shaped swing arm (25) on one side of the outer periphery. One end; an axial hole is provided at the middle position of the swing arm (25); a pin (26) installed in the axial hole is connected to a joint (61) at the lower end of an adjusting rod (62) of a balancing tie rod (6); an upper end of the adjusting rod (62) passes through through holes at both ends of a balancing beam (64) and is fixedly connected via an adjusting nut (63); a joint (65) is provided above the middle position of the balancing beam (64); the joint (65) is connected to the cylinder (4) via a piston rod (41); an upper end of the cylinder (4) is hinged to a lifting lug of an upper beam (51) of a cylinder bracket (5); and both ends of the upper beam (51) are connected to a column (52). ), the inner sides of the two uprights (52) are connected to the upper side of the outer wall of the casing (3) through a connecting plate (53); the other end of the swing arm (25) is fixedly mounted with a roller bracket (27) through a bolt (28); the bottom plate (272) of the roller bracket (27) is rectangular and a cooling water pipe (271) is arranged in the middle; a water spray hole (276) is arranged above the middle section of the cooling water pipe (271); a plug (275) is installed at one end of the cooling water pipe (271), and the other end is connected to the water inlet pipe; drainage holes (276) are arranged on the bottom plate (272) on both sides of the cooling water pipe (271). The bottom plate (272) has a water hole (277); U-shaped plates (274) with square grooves are symmetrically arranged at both ends of the bottom plate (272); rib plates (273) are arranged on both outer sides of the U-shaped plates (274); the lower side of the rib plates (273) is connected to the outer side of the bottom plate (272); the roller bracket (27) is connected to the square steps at both ends of the roller shaft (112) in the roller assembly (11) through the square groove of the U-shaped plate (274); the roller (115) is located between the two inner walls of the roller guide groove (31) of the sleeve body (3), and the outer diameter of the roller (115) is slightly smaller than the width of the groove of the roller guide groove (31).

2. The improved rolling mill vertical looper device according to claim 1, characterized in that: The handle section of the roller shaft (112) is a hand-held handle when the roller shaft (112) is disassembled.

3. The improved rolling mill vertical looper device according to claim 1 is characterized in that: The first side-exit pressure roller mechanism (101), the second side-exit pressure roller mechanism (102) or the sleeve-lifting roller mechanism (2) are all equipped with a roller assembly (11).

4. The improved rolling mill vertical looper device according to claim 1, characterized in that: The connecting arm sleeve (251) in the swing arm (25) is connected to the synchronous shaft (21) in an interference fit.

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