A continuous casting billet sector guiding device

Abstract

The invention discloses a continuous casting billet sector segment guiding device, comprising: a plurality of guide roller assemblies which are successively installed on a sector frame, the guide roller assembly comprising: an outer arc roller bracket connected to the outer arc side of the sector frame, the outer arc roller bracket is rotatably connected to the outer arc guide roller through a rotating shaft; an inner arc roller bracket connected to the inner arc side of the sector frame, the inner arc roller bracket is rotatably connected to the inner arc guide roller through a rotating shaft; the guide roller assembly also comprises: a side guide mechanism connected to the front and rear sides of the sector frame, the side guide mechanisms on the front and rear sides are mirror-symmetrical. The side guide mechanism of the invention greatly improves the guiding performance of the continuous casting billet, improves the product quality, prolongs the service life of the side guide roller, reduces the production cost, and is convenient to disassemble, thereby improving the maintenance efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgy, and in particular relates to a continuous casting billet sector-shaped segment guiding device. Background Art

[0002] In the production of continuous casting billets, the cast metal billet needs to be guided by a sector segment. This guidance is achieved by a plurality of guide roller assemblies which are installed on a sector frame in succession. Each guide roller assembly includes an outer arc guide roller, an inner arc guide roller and a pair of side guide rollers. The metal billet moves under the common guidance of the above guide rollers. The linear velocity of the outer arc of the metal billet moving in the sector segment is greater than that of the inner arc. The outer arc guide roller adapts itself by increasing its rotation speed. The difference in linear velocity between the outer arc and the inner arc is reflected on the side of the metal billet. As a result, the linear velocity of the points on the radial line connecting the side of the metal billet increases radially from the inner arc to the outer arc. However, the side guide rollers commonly used at present are cylindrical side guide rollers, and the linear speeds of the points on the line connecting the circumferential widths are consistent. When the side guide rollers fit and guide the side surfaces of the metal blanks, the consistent linear speed of the cylindrical side guide rollers cannot match the differential linear speeds of the side surfaces of the metal blanks, so that the cylindrical side guide rollers do not have complete rolling friction with respect to the side surfaces of the metal blanks, but rather a considerable amount of sliding friction. The above phenomenon is particularly prominent for metal blanks with a large width. This sliding friction can cause variations in the surface structure of the metal blanks, thereby affecting the quality of the metal blanks; it can also cause deformation and damage to the side guide rollers, thereby shortening the service life of the side guide rollers. Summary of the invention

[0003] In order to solve the above-mentioned problems, the present invention proposes a continuous casting billet sector segment guiding device, the side guide mechanism of the guide roller assembly of the guiding device greatly improves the guiding performance of the continuous casting billet, improves product quality, extends the service life of the side guide rollers, reduces production costs, and is convenient for disassembly, thereby improving maintenance efficiency.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions, including:

[0005] A plurality of guide roller assemblies which are successively installed on a fan-shaped frame, wherein the guide roller assembly comprises an outer arc roller bracket connected to the outer arc side of the fan-shaped frame, the outer arc roller bracket being rotatably connected to the outer arc guide roller via a rotating shaft; an inner arc roller bracket connected to the inner arc side of the fan-shaped frame, the inner arc roller bracket being rotatably connected to the inner arc guide roller via a rotating shaft; the guide roller assembly further comprises:

[0006] The side guide mechanisms connected to the front and rear sides of the fan-shaped frame are mirror-symmetrical. The side guide mechanisms on the front and rear sides include a side guide roller bracket. Both ends of the side guide roller bracket are connected to a core shaft through an adjustment structure. The core shaft is rotatably connected to the side guide roller through a pair of roller end bearings. The end face of the side guide roller is bolted to the roller end sealing cover. The side guide roller is a tapered roller, and its diameter at one end close to the outer arc guide roller is slightly larger than the diameter at the other end.

[0007] The adjustment structure includes a slide groove bearing seat, an adjustment bearing is installed in the slide groove bearing seat, the inner ring of the adjustment bearing is sleeved with the core shaft, the inner side surface of the inner ring is fitted with the step of the end of the core shaft, the inner side bolt of the slide groove bearing seat is connected to the bearing seat sealing cover, and the outer side bolt of the slide groove bearing seat is connected to the bearing seat sealing cover. The upper and lower parts of the bearing seat sealing cover are respectively provided with an upper adjustment threaded hole and a lower adjustment threaded hole, the upper adjustment bolt is threadedly connected to the upper adjustment threaded hole, and the upper adjustment bolt is rotated to push the upper part of the inner ring of the adjustment bearing, the lower adjustment bolt is threadedly connected to the lower adjustment threaded hole, and the lower adjustment bolt is rotated to push the lower part of the inner ring of the adjustment bearing, the upper adjustment bolt and the lower adjustment bolt are respectively threadedly connected to locking nuts, and the locking nuts are located on the outer side of the bearing seat sealing cover.

[0008] The side guide mechanism is also provided with a lubricating oil circuit, which includes an oil filling hole arranged on the slide groove bearing seat, and the oil filling hole is connected to the outer side of the core shaft end face through the oil through hole inside the slide groove bearing seat. The end face of the core shaft is provided with an axial oil hole, and the axial oil hole is respectively connected to the first radial oil hole and the second radial oil hole.

[0009] The slide groove bearing seat is slidably connected with the strip-shaped protrusions on both sides of the slider support through the strip-shaped grooves on both sides thereof. An eccentric shaft pin is connected to the outer side of the slide groove bearing seat. The eccentric shaft pin passes through the through hole at the lower part of the slider support. Rotating the eccentric pin shaft can lock the connection between the slide groove bearing seat and the slider support. The clamp is connected to the slider support through a screw, and the clamp can clamp the eccentric pin shaft. A connecting hole is provided on the platform of the slider support. The bolt passes through the connecting hole and is threadedly connected to the side guide roller bracket.

[0010] The adjusting bearing is an outer spherical ball bearing.

[0011] The inner arc roller bracket is adjustably connected to the inner arc side of the fan-shaped frame through a movable rod to adjust the distance between the inner arc guide roller and the outer arc guide roller to meet the guiding requirements of continuous casting billets of different thicknesses.

[0012] The side guide roller bracket of the rear side side guide mechanism is adjustably connected to the rear side of the fan-shaped frame through a movable rod to adjust the distance between the front side side guide roller and the rear side side guide roller to meet the guiding requirements of continuous casting billets of different widths.

[0013] The invention discloses a continuous casting billet sector-shaped guiding device. The side guide mechanism of the guide roller assembly of the guiding device greatly improves the guiding performance of the continuous casting billet, improves product quality, prolongs the service life of the side guide roller, reduces production cost, and is convenient for disassembly, thereby improving maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the structure of the guide roller assembly in the present invention.

[0016] Figure 3 It is a schematic cross-sectional structural diagram of the side guide mechanism in the present invention.

[0017] Figure 4 yes Figure 3 Enlarged schematic diagram of part A.

[0018] Figure 5 It is a three-dimensional exploded schematic diagram of the side guide mechanism in the present invention (excluding the side guide roller bracket).

[0019] Figure 6 It is a three-dimensional exploded schematic diagram of the side guide mechanism in the present invention when connected to the slider support (excluding the side guide roller bracket). DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings to facilitate a clearer understanding for those skilled in the art.

[0021] like Figure 1 , Figure 2 As shown, the present invention comprises: a plurality of guide roller assemblies 2 which are successively installed on a fan-shaped frame 1, wherein the guide roller assembly comprises an outer arc roller bracket 3 connected to the outer arc side of the fan-shaped frame, the outer arc roller bracket is rotatably connected to the outer arc guide roller 4 through a rotating shaft; an inner arc roller bracket 5 connected to the inner arc side of the fan-shaped frame, the inner arc roller bracket is rotatably connected to the inner arc guide roller 6 through a rotating shaft;

[0022] like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the guide roller assembly also includes:

[0023] The side guide mechanisms connected to the front and rear sides of the fan-shaped frame are mirror-symmetrical. The side guide mechanisms include a side guide roller bracket 7. The two ends of the side guide roller bracket are respectively connected to a core shaft 8 through an adjustment structure. The core shaft is rotatably connected to a side guide roller 9 through a pair of roller end bearings. The end face of the side guide roller is bolted to the roller end sealing cover 25. The side guide roller is a tapered roller, and its diameter at one end close to the outer arc guide roller is slightly larger than the diameter at the other end.

[0024] As a preferred embodiment of the present invention, the adjustment structure includes a slide groove bearing seat 10, in which an adjustment bearing 11 is installed, the inner ring of the adjustment bearing is sleeved with the core shaft, the inner side surface of the inner ring is fitted with the step at the end of the core shaft, the inner side bolt of the slide groove bearing seat is connected to the bearing seat sealing cover 12, and the outer side bolt of the slide groove bearing seat is connected to the bearing seat sealing cover 13, the upper and lower parts of the bearing seat sealing cover are respectively provided with upper adjustment threaded holes and lower adjustment threaded holes, the upper adjustment bolt 14 is threadedly connected to the upper adjustment threaded hole, and the front end of the upper adjustment bolt can be pushed to adjust the upper part of the inner ring of the bearing by rotating it, the lower adjustment bolt 15 is threadedly connected to the lower adjustment threaded hole, and the front end of the lower adjustment bolt can be pushed to adjust the lower part of the inner ring of the bearing by rotating it, the upper adjustment bolt and the lower adjustment bolt are respectively threadedly connected to the locking nut 27, and the locking nut is located on the outer side of the bearing seat sealing cover.

[0025] Furthermore, the side guide mechanism is also provided with a lubricating oil circuit, which includes an oil filling hole 16 provided on the slide bearing seat, which is connected to the outer side of the core shaft end face through an oil through hole 17 inside the slide bearing seat, and an axial oil hole 18 is provided on the end face of the core shaft, which is respectively connected to the first radial oil hole 19 and the second radial oil hole 20. The adjustment bearing can be lubricated through the first radial oil hole, and the roller end bearing can be lubricated through the second radial oil hole.

[0026] Further, such as Figure 6 As shown, the slide groove bearing seat is slidably connected with the strip-shaped protrusions on both sides of the slider support 21 through the strip-shaped grooves on both sides thereof, and an eccentric shaft pin 22 is connected to the outer side of the slide groove bearing seat, and the eccentric shaft pin passes through the through hole at the lower part of the slider support. Rotating the eccentric pin shaft can lock the connection between the slide groove bearing seat and the slider support, and the clamp 23 is connected to the slider support through a screw 26, and the clamp can clamp the eccentric pin shaft. A connecting hole 24 is provided on the platform of the slider support, and a bolt passes through the connecting hole and is threadedly connected to the side guide roller bracket.

[0027] Preferably, the adjustment bearing is an outer spherical ball bearing.

[0028] Furthermore, the inner arc roller bracket is adjustably connected to the inner arc side of the fan-shaped frame through a movable rod to adjust the distance between the inner arc guide roller and the outer arc guide roller to meet the guiding requirements of continuous casting billets of different thicknesses.

[0029] Furthermore, the side guide roller bracket of the rear side side guide mechanism is adjustably connected to the rear side of the fan-shaped frame through a movable rod to adjust the distance between the front side side guide roller and the rear side side guide roller to meet the guiding requirements of continuous casting billets of different widths.

[0030] The present invention adopts a tapered roller as the side guide roller in the side guide mechanism of the guide roller assembly, and the diameter of the tapered roller close to one end of the outer arc guide roller is slightly larger than the diameter of the other end. Under the condition of a constant angular velocity, the linear velocity on the roller surface of the side guide roller increases from the small diameter end to the large diameter end of the side guide roller. The diameter of the large circular end surface of the tapered side guide roller can be calculated by the known central angle of the fan-shaped frame and according to the length of the tapered side guide roller and the diameter of the small circular end surface, so that when the tapered side guide roller is completely fitted with the side surface of the continuous casting billet, the linear velocity of the tapered side guide roller surface and the point on the side surface of the continuous casting billet at the fitting point is relatively large. The side guide rollers should be consistent to avoid sliding between the side guide rollers and the side of the continuous casting billet; in order to ensure that the side guide rollers are completely fitted with the side of the continuous casting billet, the inclination angle of the core shaft in the side guide mechanism must be adjusted through the adjustment structure of the present invention, and the adjustment steps are: loosen the upper adjustment bolt at the large diameter end of the side guide roller, rotate the lower adjustment bolt at the large diameter end of the side guide roller, so that the front end of the lower adjustment bolt pushes the lower part of the inner ring of the adjustment bearing; loosen the lower adjustment bolt at the small diameter end of the side guide roller, rotate the upper adjustment bolt at the small diameter end of the side guide roller, so that the front end of the upper adjustment bolt pushes the upper part of the inner ring of the adjustment bearing. The core shaft is tilted by adjustment, so that the large diameter ends of the conical side guide rollers on both sides of the fan-shaped frame move outward respectively, so that the side guide rollers are completely fitted with the side of the continuous casting billet, and the locking nut is tightened after the adjustment is completed. The slider support is connected to the slide bearing seat, and then the side guide roller bracket is connected through the slider support. The purpose is to facilitate disassembly and facilitate rapid replacement of parts.

[0031] The invention discloses a continuous casting billet sector-shaped guiding device. The side guide mechanism of the guide roller assembly of the guiding device greatly improves the guiding performance of the continuous casting billet, improves product quality, prolongs the service life of the side guide roller, reduces production cost, and is convenient for disassembly, thereby improving maintenance efficiency.

[0032] The present invention is not limited to the above-mentioned specific embodiments. As long as conical side guide rollers and a core shaft rotatably connected to the side guide rollers are used in the side guide mechanism, and an adjustment structure is connected to both ends of the core shaft, no matter what form the adjustment structure adopts, it falls within the scope of protection required by the present invention.

Claims

1. A continuous casting billet sector guiding device, comprising a plurality of guide roller assemblies (2) which are successively mounted on a sector frame (1), wherein the guide roller assembly comprises an outer arc roller bracket (3) connected to the outer arc side of the sector frame, the outer arc roller bracket being rotatably connected to the outer arc guide roller (4) via a rotating shaft; and an inner arc roller bracket (5) connected to the inner arc side of the sector frame, the inner arc roller bracket being rotatably connected to the inner arc guide roller (6) via a rotating shaft; characterized in that: The guide roller assembly also includes: The side guide mechanism is connected to the front and rear sides of the fan-shaped frame, and the side guide mechanisms on the front and rear sides are mirror-symmetrical. The side guide mechanism comprises a side guide roller bracket (7), and the two ends of the side guide roller bracket are respectively connected to a core shaft (8) through an adjustment structure. The core shaft is rotatably connected to a side guide roller (9) through a pair of roller end bearings. The end face of the side guide roller is bolted to a roller end sealing cover (25). The side guide roller is a tapered roller, and the diameter of one end of the side guide roller close to the outer arc guide roller is slightly larger than the diameter of the other end, so that when the angular velocity is constant, the line on the roller surface of the side guide roller is The speed increases from the small diameter end of the side guide roller to the large diameter end. When the tapered side guide roller is completely fitted with the side surface of the continuous casting billet, the linear speeds of the tapered side guide roller surface and the points on the side surface of the continuous casting billet are consistent at the fitting position, thereby avoiding sliding between the side guide roller and the side surface of the continuous casting billet. The adjustment structure comprises a slide groove bearing seat (10), an adjustment bearing (11) is installed in the slide groove bearing seat, the inner ring of the adjustment bearing is sleeved with the mandrel, the inner side surface of the inner ring is fitted with the step at the end of the mandrel, the inner side of the slide groove bearing seat is bolted to the bearing seat sealing cover (12), The outer side of the slide groove bearing seat is bolted to the bearing seat sealing cover (13). The upper and lower parts of the bearing seat sealing cover are respectively provided with an upper adjustment threaded hole and a lower adjustment threaded hole. The upper adjustment bolt (14) is threadedly connected to the upper adjustment threaded hole. The upper adjustment bolt is rotated to push the upper part of the inner ring of the adjustment bearing. The lower adjustment bolt (15) is threadedly connected to the lower adjustment threaded hole. The lower adjustment bolt is rotated to push the lower part of the inner ring of the adjustment bearing. The upper adjustment bolt and the lower adjustment bolt are respectively threadedly connected to a locking nut (27). The locking nut The nut is located on the outside of the sealing cover of the bearing seat, and the adjustment structure adjusts the inclination angle of the core shaft in the side guide mechanism to ensure that the side guide roller is completely in contact with the side of the continuous casting billet; the side guide mechanism is also provided with a lubricating oil circuit, which includes an oil filling hole (16) arranged on the slide groove bearing seat, and the oil filling hole is connected to the outside of the core shaft end face through the oil through hole (17) inside the slide groove bearing seat. The end face of the core shaft is provided with an axial oil hole (18), and the axial oil hole is respectively connected to the first radial oil hole (19) and the second radial oil hole (20).

2. The continuous casting billet sector guiding device according to claim 1, characterized in that: The slide groove bearing seat is slidably connected with the strip-shaped protrusions on both sides of the slider support (21) through the strip-shaped grooves on both sides thereof. An eccentric shaft pin (22) is connected to the outer side of the slide groove bearing seat. The eccentric shaft pin passes through the through hole at the bottom of the slider support. The connection between the slide groove bearing seat and the slider support can be locked by rotating the eccentric shaft pin. The clamp (23) is connected to the slider support through a screw (26). The clamp can clamp the eccentric shaft pin. A connecting hole (24) is provided on the platform of the slider support. The bolt passes through the connecting hole and is threadedly connected to the side guide roller bracket.

3. The continuous casting billet sector guiding device according to claim 2, characterized in that: The adjusting bearing is an outer spherical ball bearing.

4. The continuous casting billet sector guiding device according to claim 3, characterized in that: The inner arc roller bracket is adjustably connected to the inner arc side of the fan-shaped frame through a movable rod to adjust the distance between the inner arc guide roller and the outer arc guide roller to meet the guiding requirements of continuous casting billets of different thicknesses.

5. The continuous casting billet sector guiding device according to claim 3, characterized in that: The side guide roller bracket of the rear side side guide mechanism is adjustably connected to the rear side of the fan-shaped frame through a movable rod to adjust the distance between the front side side guide roller and the rear side side guide roller to meet the guiding requirements of continuous casting billets of different widths.

Images