Axial adjusting device of rolling mill

Abstract

The invention discloses a rolling mill axial adjusting device, and relates to the technical field of rolling mills, the rolling mill axial adjusting device comprises an adjusting assembly and a transmission assembly, the transmission assembly comprises a mounting shell, the mounting shell is fixedly mounted on a mounting seat I, a short connecting shaft and a long connecting shaft are rotatably mounted in the mounting shell, and the long connecting shaft and the short connecting shaft are vertically arranged; a small gear is arranged in the mounting shell and used for driving the adjusting assembly. The transmission assembly can be installed on a horizontal rolling mill and a vertical rolling mill without difference for use, the horizontal rolling mill and the vertical rolling mill are completely the same, when a rolling mill core is used on a line, an axial adjusting device and an upper roll system are designed into a whole, and an adjusting mechanism is led out of the outer side of the rolling mill in a transmission mode through a connecting shaft. A new axial adjusting connecting shaft does not need to be added, welding with a roll gap adjusting device, selection of the mounting position of the connecting shaft and adaptation of the angle are avoided, and the manufacturing cost and the mounting difficulty are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of rolling mills, and in particular to an axial adjustment device for a rolling mill. Background Art

[0002] With the continuous development of bar and wire rolling technology, the specifications of rolled billets are increasing, the production capacity is constantly improving, and the new standards of product quality are getting higher and higher. Short stress rolling mills have become the dominant type of bar and wire mills because of their own advantages such as high rigidity, high precision, light weight, convenient operation and adjustment, quick replacement, and low maintenance cost. Short stress rolling mills have high rigidity and the shortest stress line during rolling; high product precision, the press can achieve rapid symmetrical adjustment of the roll gap, and the axial adjustment device can achieve accurate hole alignment, and the operation is stable, simple and convenient; the rolling force is evenly distributed and the bearing has a long service life; high operating efficiency, the rolling mill will install and adjust the rolls and guides corresponding to the rolled products in advance when changing rolls or offline, saving downtime; low cost, compared with the arch rolling mill of the same specification, the weight of the equipment is greatly reduced, the specifications of the supporting parts such as bearings are correspondingly reduced, and the investment cost is significantly reduced. Due to the many advantages of short stress rolling mills, it has become the dominant type of bar and wire rolling mills at present.

[0003] The roll gap adjustment device is used to adjust the roll opening. The hydraulic motor drives the pull rod to rotate through the worm-worm gear pair. The left and right threaded nuts in the upper and lower bearing seats rotate the pull rod to achieve symmetrical adjustment of the upper and lower rolls relative to the rolling line. To prevent the rolls from tilting, the roll gap adjustment device is equipped with a clutch to facilitate unilateral adjustment.

[0004] At present, the mechanism structure of the axial adjustment of the rolling mill is complex, with poor rigidity and short life. The rolling mill core is deliberately divided into horizontal and vertical types, which reduces the interchangeability of the rolling mill, increases the reserve of the rolling mill core, and increases the labor intensity of workers. In the prior art, the worm is on the side of the upper roller. In the horizontal rolling mill, people can stand on the operating side of the rolling mill and directly rotate the worm to adjust the roller axially. In the vertical rolling mill, since the operating side of the rolling mill is at the bottom of the equipment, there is no space for direct manual operation. The worm can only be led out through the external axial adjustment shaft. By rotating the axial adjustment shaft, the worm is driven to rotate, and the worm drives the bevel gear to complete the hole alignment of the upper roller and the lower roller. The shaft of the vertical rolling mill itself must meet the requirements of expansion and contraction with the change of the roll gap size, so the shaft is a flexible shaft, the strength of the shaft is not high, and the service life is short. Summary of the invention

[0005] In view of the above technical problems, the present invention designs an adjustment device that can be used for both horizontal rolling mills and vertical rolling mills. The present invention discloses an axial adjustment device for a rolling mill, including an adjustment component and a transmission component. The transmission component includes a mounting shell, which is fixedly mounted on a mounting seat. A short shaft and a long shaft are rotatably mounted in the mounting shell, and the long shaft and the short shaft are vertically arranged. A small gear is arranged in the mounting shell to drive the adjustment component. Through the above technical solution, the transmission assembly can be installed in the horizontal mill and the vertical mill without distinction. The horizontal mill and the vertical mill are exactly the same. When the mill core is used on the line, it avoids mixed loading errors, reduces the reserve of the mill core, and reduces the labor intensity of workers; the axial adjustment device and the upper roller system are designed as a whole, and the coupling shaft leads the adjustment mechanism transmission out of the mill. When the mill is used vertically, there is no need to add a new axial adjustment coupling shaft, and the welding with the roll gap adjustment device and the selection of the coupling shaft installation position and the adaptation of the angle are avoided, reducing the manufacturing cost and installation difficulty; because the original vertical mill coupling shaft itself must meet the requirements of expansion and contraction with the change of the roll gap size, the coupling shaft is a flexible shaft, the coupling shaft strength is not high, and the service life is short. The new bevel gear structure is a rigid connection, not limited by space, high rigidity, long service life, and more stable and reliable operation.

[0006] Furthermore, a bevel gear 1 is fixedly mounted on the long connecting shaft, and a bevel gear 2 is fixedly mounted on the short connecting shaft, and the bevel gear 1 is meshed with the bevel gear 2.

[0007] Furthermore, an opening is provided on one side of the mounting shell close to the adjustment assembly, and the pinion gear is exposed at the position of the opening.

[0008] Furthermore, the adjustment assembly includes a fixed protruding ring, which is fixedly mounted on a mounting seat, and an adjustment gear is rotatably mounted on the fixed protruding ring. A roller is mounted on the mounting seat, and the adjustment gear and the roller are driven by the cooperation of a lead screw nut, and the adjustment gear is meshed with a pinion.

[0009] Furthermore, a square block is rotatably mounted on one end of the roller, a square hole is provided in the mounting seat, the square block is slidably connected to the square hole, a threaded hole is provided in the square block, a threaded shaft is matched in the threaded hole, and the adjustment gear drives the threaded shaft to rotate. Through the above technical solution, the rotation of the square block can stably drive the axial movement of the roller, and the cooperation of the square block and the roller will not affect the normal rotation of the roller. At the same time, the square block and the bearing seat on the adjustment component can also produce a self-locking effect to prevent the roller from deflecting when rotating.

[0010] Furthermore, an intermediate shaft is fixedly mounted on the threaded shaft, a shift lever is fixedly mounted on the side of the intermediate shaft, a connecting shaft is fixedly mounted on the adjusting gear, an articulated shaft is fixedly mounted on the connecting shaft, and the connecting shaft rotates to drive the shift lever via the articulated shaft.

[0011] Furthermore, a hinge plate is hinged on the hinge shaft, a locking plate is hinged on the hinge plate, a locking groove is provided on the threaded shaft, and the locking plate slides in the locking groove.

[0012] Furthermore, the fixed protruding ring is evenly provided with a plurality of locking holes, and when the locking plate is inserted into the locking hole, the threaded shaft cannot rotate. Through the above technical solution, the locking plate passes through the locking groove on the threaded shaft and is inserted into the locking hole, which can prevent the threaded shaft from rotating. The non-rotation of the threaded shaft can further ensure that the axial position of the roller does not change, thereby ensuring the accuracy of production and processing. The setting of the gear lever can drive the threaded shaft to follow the rotation.

[0013] The beneficial effects of the present invention compared with the prior art are:

[0014] (1) Through the above technical solution, the transmission assembly can be installed in the horizontal rolling mill and the vertical rolling mill without distinction. The horizontal rolling mill and the vertical rolling mill are exactly the same. When the rolling mill core is used on the line, it can avoid mixed loading errors, reduce the stock of the rolling mill core, and reduce the labor intensity of workers; the axial adjustment device and the upper roller system are designed as a whole, and the coupling shaft leads the adjustment mechanism transmission out of the rolling mill. When the rolling mill is used vertically, there is no need to add a new axial adjustment coupling shaft, and the welding with the roll gap adjustment device and the selection of the coupling shaft installation position and the adaptation of the angle are avoided, reducing the manufacturing cost and installation difficulty; because the original vertical rolling mill coupling shaft itself must meet the requirements of expansion and contraction with the change of the roll gap size, the coupling shaft is a flexible shaft, the coupling shaft strength is not high, and the service life is short. The new bevel gear structure is a rigid connection, not limited by space, high rigidity, long service life, and more stable and reliable operation.

[0015] (2) Through the above technical solution, the rotation of the square block can stably drive the axial movement of the roller, and the cooperation between the square block and the roller will not affect the normal rotation of the roller. At the same time, the square block and the bearing seat on the adjustment assembly can also produce a self-locking effect to prevent the roller from shifting when it rotates.

[0016] (3) Through the above technical solution, the locking plate passes through the locking groove on the threaded shaft and is inserted into the locking hole. At this time, the threaded shaft can be prevented from rotating. The non-rotation of the threaded shaft can further ensure that the axial position of the roller does not change, thereby ensuring the accuracy of production and processing. By setting a gear lever, the threaded shaft can be driven to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a schematic diagram of the overall structure of an axial adjustment device for a rolling mill according to an embodiment of the present invention.

[0018] Figure 2 It is a side view of an axial adjustment device for a rolling mill according to an embodiment of the present invention.

[0019] Figure 3 for Figure 2 Cross-sectional view at AA in the middle.

[0020] Figure 4 for Figure 2 Cross-sectional view at BB in the middle.

[0021] Figure 5 It is a schematic diagram of an adjustment component of an axial adjustment device for a rolling mill according to an embodiment of the present invention.

[0022] Figure 6 It is a front view of an adjustment component of an axial adjustment device for a rolling mill according to an embodiment of the present invention.

[0023] Figure 7 for Figure 6 Cross-sectional view at DD in the middle.

[0024] Figure 8 A partial schematic diagram of an axial adjustment device for a rolling mill according to an embodiment of the present invention Figure 1 .

[0025] Fig. 9 A partial schematic diagram of an axial adjustment device for a rolling mill according to an embodiment of the present invention Figure 2 .

[0026] Fig.10 for Fig. 9 Side view of.

[0027] Fig.11 for Fig.10 Cross-sectional view at CC.

[0028] Figure numbers: 1-roller gap adjustment device; 2-adjustment assembly; 3-transmission assembly; 4-mounting seat one; 5-roller; 6-mounting seat two; 7-upper bearing seat; 201-adjusting gear; 202-fixed protruding ring; 203-locking hole; 204-square hole; 205-threaded shaft; 206-square block; 207-intermediate shaft; 208-connecting shaft; 209-hinge shaft; 210-gear lever; 211-locking plate; 212-hinge plate; 213-locking groove; 301-long connecting shaft; 302-fixing seat one; 303-bevel gear one; 304-bevel gear two; 305-fixing seat two; 306-small gear; 307-short connecting shaft; 308-cover plate; 309-mounting shell. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0030] like Figure 1 The rolling mill axial adjustment device described comprises an adjustment component 2 and a transmission component 3. In the present embodiment, the adjustment component 2 and the transmission component 3 are both mounted on a mounting seat 1 4. A roller 5 is mounted between the mounting seat 1 4 and the mounting seat 2 6. A roll gap adjustment device 1 is mounted on the upper side of the mounting seat 1 4. The transmission component 3 can be installed in the horizontal rolling mill and the vertical rolling mill without distinction and can be used. The horizontal rolling mill and the vertical rolling mill are exactly the same. When the rolling mill core is used on the line, mixed loading errors are avoided, the reserve of the rolling mill core is reduced, and the labor intensity of the workers is reduced. The axial adjustment device and the upper roller system are designed as a whole. The connecting shaft leads the transmission of the adjustment mechanism to the outside of the rolling mill. When the rolling mill is adjusted in vertical use, there is no need to add a new axial adjustment connecting shaft, and welding with the roll gap adjustment device and the selection of the connecting shaft installation position and the adaptation of the angle are avoided, thereby reducing the manufacturing cost and the difficulty of installation. Because the connecting shaft of the original vertical rolling mill itself must meet the requirements of expansion and contraction with the change of the roll gap size, the connecting shaft is a flexible shaft, the strength of the connecting shaft is not high, and the service life is short. The new bevel gear structure is a rigid connection, not limited by space, has high rigidity, long service life, and works more stably and reliably.

[0031] like Figure 2-Figure 4 As shown, in this embodiment, the transmission assembly 3 includes a mounting shell 309, a cover plate 308 is fixedly installed on one side of the mounting shell 309 by bolts, the mounting shell 309 is fixedly installed on the mounting seat 1 4, a short-connection shaft 307 and a long-connection shaft 301 are rotatably installed in the mounting shell 309, a fixing seat 2 305 is fixedly installed in the mounting shell 309, a short-connection shaft 307 is rotatably installed on the fixing seat 2 305, the short-connection shaft 307 passes through the cover plate 308, and a small-connection shaft 307 is fixedly installed on the short-connection shaft 307. Gear 306, manually driving the short shaft 307 can drive the pinion 306 to rotate, the long shaft 301 and the short shaft 307 are arranged vertically, the upper bearing seat 7 is fixedly mounted on the mounting seat 4, the upper bearing seat 7 is fixedly mounted on the fixing seat 1 302, the long shaft 301 is rotatably mounted on the fixing seat 1 302, the long shaft 301 passes through the side wall of the mounting shell 309 and is axially perpendicular to the short shaft 307, and the mounting shell 309 is provided with a pinion 306 for driving the adjustment component 2. When installed in a vertical rolling mill, the long shaft 301 can be extended out of the device, which is very convenient for direct operation without going to the lower side of the machine for adjustment. Through the above technical solution, the transmission component 3 can be installed in the horizontal rolling mill and the vertical rolling mill without distinction.

[0032] In this embodiment, bevel gear 1 303 is fixedly mounted on the long connecting shaft 301, bevel gear 2 304 is fixedly mounted on the short connecting shaft 307, bevel gear 1 303 and bevel gear 2 304 are meshed, an opening is arranged on one side of the mounting shell 309 close to the adjustment component 2, and pinion 306 is exposed at the opening. When the long connecting shaft 301 is rotated manually, the long connecting shaft 301 will drive bevel gear 1 303, and bevel gear 1 303 will drive the short connecting shaft 307 to rotate via bevel gear 2 304, and finally drive pinion 306 to rotate, and pinion 306 will drive the adjustment component 2. The adjustment component 2 can be mounted on a horizontal rolling mill or a vertical rolling mill, and one of the long connecting shaft 301 and the short connecting shaft 307 can be selected as the active input shaft according to their respective positions.

[0033] like Figure 5-Figure 11 As shown, in this embodiment, the adjustment component 2 includes a fixed protruding ring 202, which is fixedly mounted on a mounting seat 4, an adjustment gear 201 is rotatably mounted on the fixed protruding ring 202, a roller 5 is mounted on the mounting seat 4, the adjustment gear 201 and the roller 5 are driven by the cooperation of a lead screw nut, and the adjustment gear 201 is meshed with a pinion 306.

[0034] In this embodiment, a square block 206 is rotatably mounted on one end of the roller 5, a square hole 204 is provided in the mounting seat 14, the square block 206 is slidably connected with the square hole 204, and the square block 206 can drive the roller 5 to move when sliding in the square hole 204, but the roller 5 will not be affected when rotating. A threaded hole is provided in the square block 206, and a threaded shaft 205 is matched in the threaded hole, and the adjustment gear 201 drives the threaded shaft 205 to rotate. Through the above technical solution, the rotation of the square block 206 can stably drive the axial movement of the roller 5, and the cooperation between the square block 206 and the roller 5 will not affect the normal rotation of the roller 5. At the same time, the square block 206 and the bearing seat 7 on the adjustment component 2 can also produce a self-locking effect to prevent the roller 5 from deflecting when rotating.

[0035] In this embodiment, the threaded shaft 205 is fixedly mounted with an intermediate shaft 207, a shift lever 210 is fixedly mounted on the side of the intermediate shaft 207, a recess is provided inwardly on the side of the intermediate shaft 207, the shift lever 210 is fixedly mounted in the recess, and a total of four shift levers 210 are provided, a connecting shaft 208 is fixedly mounted on the adjustment gear 201, an articulated shaft 209 is fixedly mounted on the connecting shaft 208, and four articulated shafts 209 are also provided, and the connecting shaft 208 rotates to drive the shift lever 210 through the articulated shaft 209. The articulated shaft 209 moves between two adjacent shift levers 210, and can drive the threaded shaft 205 to rotate in different directions by contacting different shift levers 210.

[0036] In this embodiment, a hinge plate 212 is hinged on the hinge shaft 209, a locking plate 211 is hinged on the hinge plate 212, four locking grooves 213 are provided on the threaded shaft 205, and the locking plate 211 slides in the locking grooves 213; a plurality of locking holes 203 are evenly arranged on the fixed protruding ring 202, and when the locking plate 211 is inserted into the locking hole 203, the threaded shaft 205 cannot rotate. At this time, the locking plate 211 passes through the locking groove 213 and the locking hole 203 to play a fixing role. When the hinge plate 212 and the locking plate 211 are on the same straight line, the hinge shaft 209 is in the middle position of the two gear rods 210. At this time, it can rotate in any direction. When the locking plate 211 is separated from the locking hole 203, the hinge shaft 209 just contacts one of the gear rods 210. Through the above technical solution, the locking plate 211 passes through the locking groove 213 on the threaded shaft 205 and is inserted into the locking hole 203. At this time, the threaded shaft 205 can be prevented from rotating. The non-rotation of the threaded shaft 205 can further ensure that the axial position of the roller 5 does not change, thereby ensuring the accuracy of production and processing. By setting the gear rod 210, the threaded shaft 205 can be driven to rotate.

[0037] Working principle: install the device on the rolling mill. If the rolling mill has its own adjustment structure, you only need to install the transmission component 3 on the rolling mill. The optimal solution on the horizontal rolling mill is shown in this embodiment, but the adjustment component 2 can be replaced by other solutions. For this embodiment, after installation, use a tool to drive the short-circuit shaft 307 (if it is a vertical rolling mill, drive the long-circuit shaft 301). The commonly used tool is a wrench. The short-circuit shaft 307 drives the small gear 306 to rotate, and the small gear 306 drives the adjustment gear 201 to rotate. The adjustment gear 201 drives the connecting shaft 208 to rotate. The connecting shaft 208 drives the locking plate 211 to slide through the hinge shaft 209 and the hinge plate 212. During this process, the hinge shaft 209 and the stop rod 210 are not in contact. At this time, the connecting shaft 2 08 idle rotation, so the threaded shaft 205 does not rotate. When the locking plate 211 leaves the locking hole 203, the hinge shaft 209 happens to contact the gear lever 210, and then drives the intermediate shaft 207 to rotate as a whole. The intermediate shaft 207 drives the threaded shaft 205, and the threaded shaft 205 drives the square block 206 to move axially through the threaded hole, thereby driving the roller 5 to adjust. After the adjustment is completed, it is necessary to rotate in the opposite direction for a distance to allow the hinge shaft 209 to return to the middle position of the two gear levers 210. At this time, the locking plate 211 is also inserted into the locking groove 213 for fixing. The wrench leaves the short-circuit shaft 307 to reduce the possibility of accidental rotation during normal operation, and the hinge shaft 209 returns to the middle position of the two gear levers 210. Even if it rotates a distance accidentally, it will not affect the position of the roller 5.

[0038] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A rolling mill axial adjustment device, It is characterized in that The invention comprises an adjustment component (2) and a transmission component (3), wherein the transmission component (3) comprises a mounting shell (309), wherein the mounting shell (309) is fixedly mounted on a mounting seat (4), wherein a short connecting shaft (307) and a long connecting shaft (301) are rotatably mounted in the mounting shell (309), wherein the long connecting shaft (301) and the short connecting shaft (307) are vertically arranged, and wherein a small gear (306) is arranged in the mounting shell (309) for driving the adjustment component (2).

2. A rolling mill axial adjustment device according to claim 1, It is characterized in that The long connecting shaft (301) is fixedly provided with a bevel gear 1 (303), and the short connecting shaft (307) is fixedly provided with a bevel gear 2 (304), and the bevel gear 1 (303) and the bevel gear 2 (304) are meshed.

3. A rolling mill axial adjustment device according to claim 2, It is characterized in that An opening is provided on one side of the mounting shell (309) close to the adjustment assembly (2), and the pinion (306) is exposed at the position of the opening.

4. A rolling mill axial adjustment device according to claim 1, It is characterized in that The adjustment assembly (2) comprises a fixed protruding ring (202), the fixed protruding ring (202) is fixedly mounted on a mounting seat (4), an adjustment gear (201) is rotatably mounted on the fixed protruding ring (202), a roller (5) is mounted on the mounting seat (4), the adjustment gear (201) and the roller (5) are driven by the cooperation of a lead screw nut, and the adjustment gear (201) is meshed with a pinion (306).

5. A rolling mill axial adjustment device according to claim 4, It is characterized in that A square block (206) is rotatably mounted on one end of the roller (5); a square hole (204) is arranged in the mounting seat (4); the square block (206) is slidably connected to the square hole (204); a threaded hole is arranged in the square block (206); a threaded shaft (205) is matched in the threaded hole; and the adjusting gear (201) drives the threaded shaft (205) to rotate.

6. A rolling mill axial adjustment device according to claim 5, It is characterized in that An intermediate shaft (207) is fixedly mounted on the threaded shaft (205), a shift lever (210) is fixedly mounted on the side of the intermediate shaft (207), a connecting shaft (208) is fixedly mounted on the adjusting gear (201), an articulated shaft (209) is fixedly mounted on the connecting shaft (208), and the connecting shaft (208) rotates to drive the shift lever (210) through the articulated shaft (209).

7. A rolling mill axial adjustment device according to claim 6, It is characterized in that A hinge plate (212) is hinged on the hinge shaft (209), a locking plate (211) is hinged on the hinge plate (212), a locking groove (213) is provided on the threaded shaft (205), and the locking plate (211) slides in the locking groove (213).

8. The rolling mill axial adjustment device according to claim 7, It is characterized in that A plurality of locking holes (203) are evenly arranged on the fixed protruding ring (202); when the locking plate (211) is inserted into the locking hole (203), the threaded shaft (205) cannot rotate.

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