Inlet guide and guard device

Abstract

The invention provides an inlet guide and guard device, and relates to the technical field of strip steel rolling. The inlet guiding and guarding device comprises a frame, a guide roller and two guiding and guarding bodies arranged on the frame, at least one guiding and guarding body is connected to the frame in a sliding mode, each guiding and guarding body comprises a guiding and guarding side plate, the two guiding and guarding side plates are each provided with a first through groove penetrating through the thickness direction of the corresponding guiding and guarding side plate, the guide roller is arranged at the first through grooves, and the axial direction of the guide roller is parallel to the vertical direction. The guide roller comprises a fixing assembly and a rotating assembly, the fixing assembly and the guide and guard body are relatively fixed, the fixing assembly is movably sleeved with the rotating assembly, and part of the rotating assembly extends into the inner side of the corresponding guide and guard side plate through the first through groove in the radial direction of the rotating assembly. The guide and guard side plate and the side edge position of strip steel can be prevented from being scratched, and the quality of the strip steel is improved. Moreover, in the guide roller, the rotating assembly of the guide roller is rotationally connected with the fixing assembly, so that the guide roller can be fixed with the guide and guard body only through the fixing assembly, and the guide roller is convenient to disassemble and assemble.

Description

Technical Field

[0001] The present invention relates to the technical field of strip steel rolling, and in particular to an inlet guide device. Background Art

[0002] On current hot-rolled plate production lines, after undergoing high-pressure water dephosphorization, rough rolling, and heat preservation, the strip enters the finishing mill. Due to the long travel distance, the strip can deviate before entering the finishing mill, and in severe cases, even impact inline equipment. Therefore, a guide device at the front entrance of the finishing mill must stabilize the strip in the center of the mill. The guide device at the front entrance of the finishing mill guides the strip into the finishing mill for proper rolling and aligns the strip with the rolling centerline to prevent the strip head from deviating. However, frequent impact and friction between the strip and the entrance guide side plates can cause severe scratches on the guide side plates, affecting the strip side quality. Even with the addition of wear-resistant plates on the guide side plates, the wear-resistant plates will wear out over time. Furthermore, repairing these scratches requires repair welding and grinding, which increases maintenance workload, prolongs roll change cycles, and reduces rolling efficiency. Summary of the Invention

[0003] The present invention aims to solve at least one of the above technical problems.

[0004] In order to solve the above problems, the present invention provides an entrance guide device, comprising a frame, a guide roller and two guide bodies arranged on the frame, at least one of the guide bodies can be slidably connected to the frame in a direction close to or away from the other guide body, the guide body comprises a guide side plate, the guide side plates of the two guide bodies are arranged opposite to each other, and are each provided with a first through groove running through the thickness direction thereof, the guide roller is arranged at the first through groove, and the axial direction of the guide roller is parallel to the vertical direction, wherein the guide roller comprises a fixed component and a rotating component, the fixed component is relatively fixed to the guide body, the rotating component is movably mounted on the fixed component, and a portion of the rotating component extends into the inner side of the corresponding guide side plate through the first through groove in its radial direction.

[0005] The inlet guide device provided by the present invention can be arranged at the front side of the inlet of the finishing mill, and the two guide bodies are respectively arranged on the left and right sides of the inlet, and at least one of them is slidably connected to the frame, for example, slidably connected to the frame in the transverse direction. In this way, the transverse spacing between the two guide bodies can be adjusted to accommodate strips of different widths. Moreover, by adjusting the transverse spacing between the two guide bodies, the strip can also be aligned with the rolling center line of the finishing mill before entering the finishing mill, thereby realizing the transverse centering function of the strip and the finishing mill. Since a vertical guide roller is arranged at the first through groove of each guide side plate, and the radial portion of the rotating assembly of the guide roller extends into the inner side of the guide side plate (the side of the two guide side plates facing each other is the inner side of each), when the strip passes through the inlet guide device, the side of the strip contacts the rotating assembly of the guide rollers on both sides, rather than the guide side plates. Through the rolling friction between the strip and the guide rollers, scratches on the side of the guide side plates and the strip can be prevented, thereby improving the quality of the strip. Moreover, in the guide roller, the rotating component of the guide roller is rotatably connected to the fixed component. Therefore, the guide roller only needs to be fixed to the guide body through the fixed component, and the guide roller does not need to be directly rotatably connected to the guide body. For example, the guide roller can be fixed to the guide body through bolts through the fixed component, which is convenient for disassembly and assembly.

[0006] Furthermore, the guide body also includes a sliding base and a guide top plate, the lower side of the sliding base is provided with a guide groove, and the sliding base slides with the frame through the guide groove; the bottom end of the guide side plate is fixed on the sliding base, the guide top plate is provided on the top of the guide side plate, and the end of the two guide top plates that are close to each other is located between the two guide side plates; the entrance guide device also includes a driving hydraulic cylinder, the driving hydraulic cylinder is located on the upper side of the frame, and the fixed end and the movable end of the driving hydraulic cylinder are respectively connected to the frame and the corresponding guide body.

[0007] Furthermore, the guide body also includes a side wear-resistant plate, and the side wear-resistant plate is respectively provided on the side where the two guide side plates are close to each other, and the side wear-resistant plate is provided with a first opening corresponding to the first through groove; and / or, the guide body also includes a bottom wear-resistant plate, and the top surfaces of the two sliding bases are respectively located between the two guide side plates and are both provided with the bottom wear-resistant plate.

[0008] Further, along the sliding direction perpendicular to the guide body, the two guide side panels each include a front side panel and a rear side panel connected in sequence, the two rear side panels are arranged in parallel, and the spacing between the two front side panels increases toward the direction away from the rear side panels; and / or, along the sliding direction perpendicular to the guide body, the two guide top panels each include a front top panel and a rear top panel, the front top panel is arranged horizontally, and the spacing between the rear top panel and the sliding base decreases toward the direction away from the front top panel.

[0009] Further, each of the rear side panels is provided with a first through groove, and a plurality of the guide rollers are provided at the first through groove, and the plurality of guide rollers are arranged in sequence along a direction perpendicular to the sliding direction of the guide body; or, each of the rear side panels is provided with a plurality of the first through grooves in sequence along a direction perpendicular to the sliding direction of the guide body, and a guide roller is provided at each of the first through grooves.

[0010] Furthermore, the inlet guide device also includes a cooling water pipe, which is arranged on the frame or the guide body. Along the direction perpendicular to the sliding direction of the guide body, the cooling water pipe is located between the axes of the two adjacent guide rollers, the axial direction of the cooling water pipe is parallel to the axial direction of the guide roller, and the angle between the axis of the cooling water pipe and the axis of the two adjacent guide rollers is an obtuse angle. A water inlet is provided at the bottom of the cooling water pipe, and water nozzles are symmetrically provided on the peripheral side walls of the top of the cooling water pipe, and the water nozzles are facing the adjacent and corresponding guide rollers.

[0011] Furthermore, the guide top plate is provided with a second through-slot communicating with the first through-slot, and a notch is provided at one end away from the two second through-slots on the two guide top plates; the upper side surface of the guide top plate is further provided with a long strip groove, and the long strip groove is communicated with the second through-slot through an intermediate groove at one end in its extension direction, wherein the width of the intermediate groove is smaller than the width of the long strip groove;

[0012] The fixing assembly includes a first bolt, a movable column, a core shaft and a shaft top seat fixed to the top of the core shaft, the movable column is provided with a first threaded hole running through it in a radial direction, the shaft top seat is provided with a second threaded hole, and the second threaded hole runs through the shaft top seat in a direction perpendicular to the axial direction of the core shaft, the first bolt is used to connect to the second threaded hole and the first threaded hole in sequence, and the width of the intermediate groove is greater than or equal to the inner diameter of the first threaded hole; the guide roller is used to be placed vertically at the first through groove until the shaft top seat matches the second through groove, and the movable column is placed in the elongated groove.

[0013] Furthermore, the guide roller further includes an upper bearing, a first oil seal and a second oil seal, the fixed assembly includes a core shaft, the rotating assembly includes a cylindrical roller body, the roller body is sleeved on the core shaft, and the upper bearing is provided between the roller body and the top of the core shaft, the first oil seal and the second oil seal are respectively provided between the roller body and the core shaft, and the first oil seal is located on the upper side of the upper bearing, and the second oil seal is located on the lower side of the upper bearing;

[0014] A first oil inlet channel and a first oil outlet channel are provided inside the core shaft, one end of the first oil inlet channel passes through the top end of the core shaft, the other end of the first oil inlet channel passes through between the core shaft and the roller body, and the other end of the first oil inlet channel is located between the first oil seal and the top end of the upper bearing; one end of the first oil outlet channel passes through the bottom end of the core shaft, the other end of the first oil outlet channel passes through between the core shaft and the roller body, and the other end of the first oil outlet channel is located between the second oil seal and the bottom end of the upper bearing.

[0015] Furthermore, the guide roller also includes a lower bearing and a third oil seal. The lower bearing is arranged between the roller body and the bottom of the core shaft, and the third oil seal is arranged between the roller body and the core shaft, and the third oil seal is located on the upper side of the lower bearing, and the third oil seal is located below the second oil seal; a second oil inlet channel is provided inside the core shaft, one end of the second oil inlet channel passes through the top end of the core shaft, and the other end of the second oil inlet channel passes through between the core shaft and the roller body, and the other end of the second oil inlet channel is located between the third oil seal and the top end of the lower bearing.

[0016] Furthermore, the fixing assembly also includes a lower sleeve and a lower end cover, the lower sleeve is sleeved on the bottom of the core shaft, and the lower sleeve is relatively fixed to the core shaft, the lower end cover is fixed to the bottom of the roller body, and the lower end cover and the lower sleeve are respectively below the lower bearing, and a gap is set between the lower end cover and the lower sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of an entrance guide device according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0019] Figure 3 A schematic structural diagram of a guide roller according to an embodiment of the present invention;

[0020] Figure 4 Schematic diagram of the top view of the guide roller according to an embodiment of the present invention;

[0021] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure along the AA direction;

[0022] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at B in the middle;

[0023] Figure 7 for Figure 5 Schematic diagram of the enlarged structure at C in the middle;

[0024] Figure 8 for Figure 4 Schematic diagram of the cross-sectional structure along the BB direction;

[0025] Figure 9 for Figure 8 Schematic diagram of the enlarged structure at C in the middle;

[0026] Figure 10 for Figure 4 Schematic diagram of the cross-sectional structure in the CC direction.

[0027] Description of reference numerals:

[0028] 1. Frame; 2. Guide body; 21. Sliding base; 211. Guide groove; 22. Guide side plate; 221. Front side plate; 222. Rear side plate; 223. First through-slot; 23. Guide top plate; 231. Front top plate; 232. Rear top plate; 233. Second through-slot; 234. Long strip groove; 235. Movable column; 2351. First threaded hole; 236. Middle groove; 3. Driving hydraulic cylinder; 4. Guide roller; 411. Mandrel; 4111. First oil inlet passage; 4112. First oil outlet passage; 4113. Second oil inlet passage ; 412, shaft top seat; 4121, second threaded hole; 413, lower sleeve; 414, first bushing; 415, second bushing; 416, third bushing; 421, upper bearing; 422, first oil seal; 423, second oil seal; 424, third oil seal; 425, lower bearing; 431, roller body; 432, lower end cover; 433, upper end cover; 434, lower spacer sleeve; 435, upper spacer sleeve; 51, side wear-resistant plate; 52, bottom wear-resistant plate; 6, cooling water pipe; 61, water nozzle; 71, first bolt; 8, middle support plate. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0031] Furthermore, the Z-axis in the accompanying drawings represents the vertical direction, that is, the up-down direction, with the positive direction of the Z-axis representing the up direction and the negative direction of the Z-axis representing the down direction; the Y-axis in the accompanying drawings represents the horizontal direction, that is, the left-right direction, with the positive direction of the Y-axis representing the left direction and the negative direction of the Y-axis representing the right direction; and the X-axis in the accompanying drawings represents the longitudinal direction, that is, the front-back direction, with the positive direction of the X-axis representing the front direction and the negative direction of the X-axis representing the back direction. It should also be noted that the aforementioned Z-axis, Y-axis, and X-axis are merely for the purpose of facilitating the description of the present invention and simplifying the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention.

[0032] See also Figure 1 , an entrance guide device according to an embodiment of the present invention includes a frame 1, a guide roller 4 and two guide bodies 2 arranged on the frame 1, at least one of the guide bodies 2 can be slidably connected to the frame 1 in a direction close to or away from the other guide body, the guide body 2 includes a guide side plate 22, the guide side plates 22 of the two guide bodies 2 are arranged opposite to each other, and are each provided with a first through groove 223 running through the thickness direction thereof, the guide roller 4 is arranged at the first through groove 223, and the axial direction of the guide roller 4 is parallel to the vertical direction, wherein the guide roller 4 includes a fixed component and a rotating component, the fixed component is relatively fixed to the guide body 2, the rotating component is movably sleeved on the fixed component, and a portion of the rotating component extends into the inner side of the corresponding guide side plate 22 through the first through groove 223 in its radial direction.

[0033] In this embodiment, the entrance guide device can be arranged on the front side of the entrance of the finishing mill, and the two guide bodies 2 are used to be respectively arranged on the left and right sides of the entrance, and at least one of them is slidably connected to the frame 1, for example, slidably connected to the frame 1 along the transverse direction. In this way, the transverse spacing between the two guide bodies 2 can be adjusted to accommodate strips of different widths, and by adjusting the transverse spacing between the two guide bodies 2, the strip can also be aligned with the rolling center line of the finishing mill before entering the finishing mill, thereby realizing the transverse centering function of the strip and the finishing mill. Since a vertical guide roller 4 is arranged at the first through groove 223 of each guide side plate 22, and the radial portion of the rotating assembly of the guide roller 4 extends into the inner side of the guide side plate 22 (the side of the two guide side plates 22 facing each other is the inner side of each), when the strip passes through the inlet guide device, the side of the strip contacts the rotating assembly of the guide rollers 4 on both sides, rather than the guide side plates 22. This rolling friction between the strip and the guide roller 4 can prevent scratches from occurring on the side of the guide side plates 22 and the strip, thereby improving the quality of the strip. Moreover, in the guide roller 4, the rotating assembly of the guide roller 4 is rotatably connected to the fixed assembly. Therefore, the guide roller 4 only needs to be fixed to the guide body 2 via the fixed assembly, and the guide roller 4 does not need to be directly rotatably connected to the guide body 2. For example, the guide roller 4 can be fixed to the guide body 2 via bolts via the fixed assembly, which is convenient for disassembly and assembly.

[0034] Alternatively, see Figure 1 The guide body 2 also includes a sliding base 21 and a guide top plate 23. A guide groove 211 is provided on the lower side of the sliding base 21, and the sliding base 21 slides with the frame 1 through the guide groove 211; the bottom end of the guide side plate 22 is fixed on the sliding base 21, and the guide top plate 23 is provided on the top of the guide side plate 22, and the end of the two guide top plates close to each other is located between the two guide side plates 22; the entrance guide device also includes a driving hydraulic cylinder 3, which is located on the upper side of the frame 1, and the fixed end and the movable end of the driving hydraulic cylinder 3 are respectively connected to the frame 1 and the corresponding guide body 2.

[0035] In this embodiment, the longitudinal cross-section (XZ cross-section) of the guide groove 211 of the sliding base 21 is, for example, C-shaped, which realizes sliding cooperation with the frame 1 in the transverse direction, so that at least one guide body 2 and the guide roller 4 thereon can move laterally along the frame 1; preferably, both guide bodies 2 move laterally along the frame 1, and each guide body 2 realizes transverse movement through the corresponding driving hydraulic cylinder 3, and then the transverse movement of the two guide bodies 2 can be used to better adapt to strip steels of different widths and transverse centering functions.

[0036] In this embodiment, the bottom end of the guide side plate 22 is fixed to the sliding base 21, and the top of the guide side plate 22 is also provided with a guide top plate 23. The guide top plate 23 can prevent the head of the strip from seriously warping after entering between the two guide bodies 2. In addition, the guide top plate 23 can also provide a mounting point for the fixed assembly of the guide roller 4. Among them, the driving hydraulic cylinder 3 is arranged on the upper side of the frame 1, which not only facilitates the arrangement and installation of the driving hydraulic cylinder 3, but also facilitates the subsequent maintenance work of the driving hydraulic cylinder 3; the fixed end of the driving hydraulic cylinder 3, that is, the cylinder part, can be fixedly connected to the frame 1, and the movable part of the driving hydraulic cylinder 3, that is, the piston rod part, is connected to the guide body 2, specifically, it can be connected to the guide side plate 22; it can be understood that the two driving hydraulic cylinders 3 are located outside the two guide side plates 22.

[0037] Alternatively, see Figure 1 The entrance guide device also includes an intermediate support plate 8, which is fixed to the middle of the frame 1 and located between the two guide bodies 2. The intermediate support plate 8 can then support the transverse middle of the strip to improve the stability of the strip movement.

[0038] Alternatively, see Figure 1 The guide body 2 also includes a side wear-resistant plate 51, and the side of the two guide side plates 22 that are close to each other is respectively provided with the side wear-resistant plate 51, and the side wear-resistant plate 51 is provided with a first opening corresponding to the first through groove 223; and / or, the guide body 2 also includes a bottom wear-resistant plate 52, and the top surfaces of the two sliding bases 21 are respectively located between the two guide side plates 22 and are both provided with the bottom wear-resistant plate 52.

[0039] In this embodiment, in addition to the guide roller 4 being provided on the guide side plate 22, the original side wear-resistant plate 51 can still be provided. In this way, when the guide roller 4 has a problem and needs to be replaced, the side wear-resistant plate 51 can be used to contact the side of the strip to prevent the side of the strip from directly contacting the guide side plate 22. It is understandable that when the side wear-resistant plate 51 is provided on the inner side of the guide side plate 22, the first through-slot 223 penetrates the guide side plate 22, and the first opening penetrates the side wear-resistant plate 51 to ensure that the rotating assembly of the guide roller 4 can partially extend into the inner side of the side wear-resistant plate 51.

[0040] In this embodiment, the upper side surface of the sliding base 21 located between the two guide side plates 22 is also provided with a bottom wear-resistant plate 52, which then contacts the bottom surface of the strip near the side through the bottom wear-resistant plate 52 to prevent wear of the bottom surface of the strip near the side.

[0041] Alternatively, see Figure 1, along the sliding direction perpendicular to the guide body 2, the two guide side plates 22 each include a front side plate 221 and a rear side plate 222 connected in sequence, the two rear side plates 222 are arranged in parallel, and the distance between the two front side plates 221 increases toward the direction away from the rear side plates 222; and / or, along the sliding direction perpendicular to the guide body 2, the two guide top plates 23 each include a front top plate 231 and a rear top plate 232, the front top plate 231 is arranged horizontally, and the distance between the rear top plate 232 and the sliding base 21 decreases toward the direction away from the front top plate 231.

[0042] In this embodiment, the two guide side plates 22 form a trumpet-shaped structure, that is, the two rear side plates 222 are parallel to the longitudinal direction, and the interval between the two rear side plates 222 is smaller than the interval between the two front side plates 221; in the direction from back to front, the interval between the two front side plates 221 increases, so that the two guide side plates 22 with a trumpet-shaped structure facilitate the entry of the head of the strip, and when the strip enters between the guide rollers 4 on the left and right sides, the strip and the finishing mill are horizontally aligned.

[0043] In this embodiment, the guide top plate 23 is not a flat plate, but is composed of two components, namely a front top plate 231 and a rear top plate 232. The front top plate 231 is a horizontal plate, and the rear top plate 232 is an inclined plate. In the direction from front to back, the distance between the rear top plate 232 and the sliding base 21 decreases. In this way, after the head of the strip enters between the two guide side plates 22, the inclined rear top plate 232 can limit the head of the strip, so that the head of the strip gradually approaches a suitable height, ensuring that the head of the strip can enter the finishing mill.

[0044] Optionally, each of the rear side plates 222 is provided with a first through groove 223, and a plurality of the guide rollers 4 are provided at the first through groove 223, and the plurality of guide rollers 4 are arranged in sequence along a direction perpendicular to the sliding direction of the guide body 2; or, each of the rear side plates 222 is provided with a plurality of the first through grooves 223 in sequence along a direction perpendicular to the sliding direction of the guide body 2, and a guide roller 4 is provided at each of the first through grooves 223.

[0045] In this embodiment, since the front side plate 221 mainly plays the role of entrance guide, the first through slot 223 is set at the rear side plate 222. Figure 1 There is one first through groove 223, but a plurality of guide rollers 4 are arranged in sequence along the longitudinal direction of this first through groove 223. In this way, there are at least four guide rollers 4 on the left and right sides to ensure the stability of the strip during movement and prevent the strip head from deviating.

[0046] In other embodiments, multiple guide rollers 4 are still provided at each rear side plate 222, but multiple first through grooves 223 are provided at each rear side plate 222, and each first through groove 223 is provided with a guide roller 4, which can still ensure the stability of the strip during movement and prevent the strip head from deviating.

[0047] Alternatively, see Figure 1-2 The inlet guide device also includes a cooling water pipe 6, which is arranged on the frame 1 or the guide body 2. Along the direction perpendicular to the sliding direction of the guide body 2, the cooling water pipe 6 is located between the axes of the two adjacent guide rollers 4, and the axial direction of the cooling water pipe 6 is parallel to the axial direction of the guide roller 4, and the angle between the axis of the cooling water pipe 6 and the direction of the axis of the two adjacent guide rollers 4 is an obtuse angle. A water inlet is provided at the bottom of the cooling water pipe 6, and water spray outlets 61 are symmetrically provided on the peripheral side walls of the top of the cooling water pipe 6, and the water spray outlets 61 are directed toward the adjacent and corresponding guide rollers 4.

[0048] It is understandable that the steel strip has already undergone other processing steps and has a high temperature before entering the finishing mill. Therefore, during the long-term contact between the steel strip and the guide roller 4, the guide roller 4 is exposed to the high temperature radiation of the steel strip and will also become very hot, which will affect the service life of the guide roller 4. Therefore, in this embodiment, in order to extend the service life of the guide roller 4, the outer surface of the guide roller 4 can be cooled by spraying water through the cooling water pipe 6. Specifically, an external cooling water pipe is provided between two adjacent guide rollers 4, and a water inlet is provided at the bottom of the cooling water pipe 6, and a water spray port 61 is symmetrically provided at the top. The water spray port 61 on one side of the symmetry line is used to spray water on one of the two adjacent guide rollers 4, and the water spray port 61 on the other side of the symmetry line is used to spray water on the other of the two adjacent guide rollers 4, so that the surfaces of the two guide rollers 4 can be cooled simultaneously through one cooling water pipe 6.

[0049] The angles between the axis of the cooling water pipe 6 and the axes of the two adjacent guide rollers 4 are obtuse. That is, the perpendicular line connecting the axis of the cooling water pipe 6 and the axis of one of the two adjacent guide rollers 4 is the first line, the perpendicular line connecting the axis of the cooling water pipe 6 and the axis of the other of the two adjacent guide rollers 4 is the second line, and the angle between the first and second lines is an obtuse angle. It can be understood that, assuming that the perpendicular line connecting the axes of the two adjacent guide rollers 4 is the third line, the closer the cooling water pipe 6 is to the third line, the greater the aforementioned obtuse angle, and the shorter the distance between the water outlet 61 of the cooling water pipe 6 and the corresponding guide roller 4, which facilitates the spraying of cooling water onto the surface of the guide roller 4.

[0050] Optionally, the water spray ports 61 are arranged on the first connecting line and the second connecting line so that the water spray ports 61 can face the corresponding guide rollers 4. The vertical line from the axis of the cooling water pipe 6 to the third connecting line is the symmetry line between the water spray ports 61 on both sides.

[0051] Alternatively, see Figure 1-2 The guide top plate 23 is provided with a second through groove 233 communicating with the first through groove 223, and a notch is provided at one end away from the two second through grooves 233 on the two guide top plates 23; the upper side surface of the guide top plate 23 is further provided with a long strip groove 234, and the long strip groove 234 is connected to the second through groove 233 through an intermediate groove 236 at one end in its extension direction, wherein the width of the intermediate groove 236 is smaller than the width of the long strip groove 234;

[0052] The fixing assembly includes a first bolt 71, a movable column 235, a core shaft 411 and an axis top seat 412 fixed to the top of the core shaft 411, the movable column 235 is provided with a first threaded hole 2351 running through it in a radial direction, the axis top seat 412 is provided with a second threaded hole 4121, and the second threaded hole 4121 passes through the axis top seat 412 in a direction perpendicular to the axial direction of the core shaft 411, the first bolt 71 is used to connect to the second threaded hole 4121 and the first threaded hole 2351 in sequence, and the width of the intermediate groove 236 is greater than or equal to the inner diameter of the first threaded hole 2351; the guide roller 4 is used to be placed vertically at the first through groove 223 until the axis top seat 412 matches the second through groove 233, and the movable column 235 is placed in the elongated groove 234.

[0053] In this embodiment, the guide top plate 23 is further provided with a second through slot 233, which is vertically connected to the first through slot 223 on the lower side; a notch is provided at one end of the two second through slots 233 on the two guide top plates 23, that is, a notch is provided at the left end of the second through slot 233 on the left guide top plate 23, and a notch is provided at the right end of the second through slot 233 on the right guide top plate 23. When installing and fixing the guide roller 4, refer to Figure 3 , the first bolt 71 can be connected sequentially to the second threaded hole 4121 of the shaft top seat 412 and the second threaded hole 4121 of the movable post 235. Then, the guide roller 4 can be placed vertically downward through the second through-slot 233 on the first through-slot 223 until the shaft top seat 412 is placed in the second through-slot 233 and the movable post 235 is placed in the elongated groove 234. At this time, part of the first bolt 71 is also placed in the middle groove 236, thereby achieving the installation and fixation of the guide roller 4 on the guide body 2. In addition, a positioning groove can be provided on the bottom wall of the first through-slot 223, and the bottom end of the core shaft 411 can be placed in the positioning groove in a vertically downward direction, thereby improving the fixing effect of the guide roller 4.

[0054] The width of the intermediate groove 236 (the dimension along the X-axis) is greater than or equal to the inner diameter of the first threaded hole 2351, thereby ensuring that a portion of the first bolt 71 can be positioned within the intermediate groove 236 and that the movable post 235 is positioned within the elongated groove 234. Furthermore, the width of the intermediate groove 236 is smaller than the width of the elongated groove 234, thereby ensuring that the movable post 235 cannot laterally enter the intermediate groove 236 from within the elongated groove 234, thereby ensuring that the movable post 235 can only move laterally within the elongated groove 234.

[0055] In this embodiment, in addition to allowing the shaft seat 412 at the top of the guide roller 4 to be mounted on the guide top plate 23, it also enables quick removal and replacement. During removal, the first bolt 71 is tightened, and the movable column 235 moves to one end within the elongated groove 234 until the movable column 235 disengages from the first bolt 71. The entire guide roller 4 can then be withdrawn vertically upward, saving maintenance time, reducing workload, and improving production efficiency. The notch at one end of the second through-slot provides clearance for removal of the first bolt 71.

[0056] Alternatively, see Figure 4-10 The guide roller 4 further includes an upper bearing 421, a first oil seal 422, and a second oil seal 423. The fixed component includes a core shaft 411, and the rotating component includes a cylindrical roller body 431. The roller body 431 is sleeved on the core shaft 411, and the upper bearing 421 is provided between the roller body 431 and the top of the core shaft 411. The first oil seal 422 and the second oil seal 423 are respectively provided between the roller body 431 and the core shaft 411, and the first oil seal 422 is located on the upper side of the upper bearing 421, and the second oil seal 423 is located on the lower side of the upper bearing 421.

[0057] A first oil inlet channel 4111 and a first oil outlet channel 4112 are provided inside the core shaft 411, one end of the first oil inlet channel 4111 passes through the top end of the core shaft 411, the other end of the first oil inlet channel 4111 passes through between the core shaft 411 and the roller body 431, and the other end of the first oil inlet channel 4111 is located between the first oil seal 422 and the top end of the upper bearing 421; one end of the first oil outlet channel 4112 passes through the bottom end of the core shaft 411, the other end of the first oil outlet channel 4112 passes through between the core shaft 411 and the roller body 431, and the other end of the first oil outlet channel 4112 is located between the second oil seal 423 and the bottom end of the upper bearing 421.

[0058] In this embodiment, the top position between the roller body 431 and the core shaft 411 is rotatably connected through the upper bearing 421. The outer ring of the upper bearing 421 is relatively fixed to the roller body 431, and the inner ring of the upper bearing 421 is relatively fixed to the core shaft 411. Figure 6-7 and Figure 9 , a first oil seal 422 and a second oil seal 423 are respectively provided on the upper and lower sides of the upper bearing 421, so that external lubricating oil can enter between the upper bearing 421 and the first oil seal 422 from the first oil inlet passage 4111 to lubricate the upper bearing 421; wherein, the first oil seal 422 and the second oil seal 423 are both lip-shaped sealing rings, and the lips of the first oil seal 422 and the lips of the second oil seal 423 are respectively facing the upper bearing 421, and then, under the sealing action of the first oil seal 422 and the second oil seal 423, after entering between the upper bearing 421 and the first oil seal 422 through the first oil inlet passage 4111, the lubricating oil will not leak upward, but flow downward to lubricate the upper bearing 421, and the lubricating oil flowing downward will not continue to leak downward through the second oil seal 423, but will flow out from the first oil outlet passage 4112 inside the core shaft 411.

[0059] In the case where the fixing assembly includes a shaft top seat 412 fixed to the top of the core shaft 411, the top end of the first oil inlet passage 4111 extends upward to the top surface of the shaft top seat 412, thereby forming a first oil inlet on the top surface of the shaft top seat 412; of course, the bottom end of the first oil outlet passage 4112 forms a first oil outlet on the bottom end surface of the core shaft 411. When the bottom end of the core shaft 411 is placed in the positioning groove of the bottom wall of the first through groove 223, the bottom wall of the positioning groove can be provided with a through oil leakage hole.

[0060] In this embodiment, since the first oil inlet channel 4111 and the first oil outlet channel 4112 entering and exiting the upper bearing 421 are both arranged inside the core shaft 411, rather than between the roller body 431 and the core shaft 411, this can greatly reduce the stroke of the lubricating oil in the oil channel, thereby improving the lubrication efficiency and saving the amount of lubricating oil.

[0061] Alternatively, see Figure 4-10The guide roller 4 also includes a lower bearing 425 and a third oil seal 424. The lower bearing 425 is provided between the roller body 431 and the bottom of the core shaft 411. The third oil seal 424 is provided between the roller body 431 and the core shaft 411, and the third oil seal 424 is located on the upper side of the lower bearing 425. The third oil seal 424 is located below the second oil seal 423; a second oil inlet channel 4113 is provided inside the core shaft 411, one end of the second oil inlet channel 4113 passes through the top end of the core shaft 411, and the other end of the second oil inlet channel 4113 passes through between the core shaft 411 and the roller body 431, and the other end of the second oil inlet channel 4113 is located between the third oil seal 424 and the top end of the lower bearing 425.

[0062] In this embodiment, Figure 7 and Figure 10 As shown, a lower bearing 425 is provided between the roller body 431 and the bottom of the core shaft 411. The outer ring of the lower bearing 425 is fixed relatively to the roller body 431, and the inner ring of the lower bearing 425 is fixed relatively to the core shaft 411. Figure 7 and Figure 10 A third oil seal 424 is provided on the upper side of the lower bearing 425, so that external lubricating oil can enter between the lower bearing 425 and the third oil seal 424 from the second oil inlet channel 4113 to lubricate the lower bearing 425; wherein, the third oil seal 424 is also a lip-shaped sealing ring, and its lip is facing the lower bearing 425, and then under the sealing action of the third oil seal 424, after the lubricating oil enters between the lower bearing 425 and the third oil seal 424 through the second oil inlet channel 4113, the lubricating oil will not flow upward, but will flow downward to lubricate the lower bearing 425, and then flow out from the lower side of the lower bearing 425.

[0063] In this embodiment, since the second oil inlet passage 4113 entering the lower bearing 425 is located inside the core shaft 411 rather than between the roller body 431 and the core shaft 411, this significantly reduces the travel of the lubricating oil within the oil passage, thereby improving lubrication efficiency and saving lubricating oil. Furthermore, lubricating oil may generate impurities when lubricating bearings. For example, when the bearings are in operation, friction between components causes material wear, resulting in the production of tiny metal particles. Lubricating oil can degrade under high temperatures or in oxidizing environments, forming acidic substances or precipitates, resulting in reduced lubrication performance and the generation of impurities. Therefore, the independent design of the oil passages entering and exiting the upper bearing 421 and the lower bearing 425 also ensures that the oil passages of the two bearings do not interfere with each other and that impurities do not accumulate and cause blockage.

[0064] Furthermore, lubricating oil degrades under high temperatures or in oxidizing environments, forming acidic substances or precipitation, which reduces lubrication performance and generates impurities. The roller body 431, which directly contacts the hot strip, also experiences relatively high temperatures. Therefore, placing the oil passages for the two bearings inside the core shaft 411 further reduces the effects of high temperatures on the lubricating oil.

[0065] Alternatively, see Figure 7 The fixing assembly also includes a lower sleeve 413 and a lower end cover 432. The lower sleeve 413 is sleeved on the bottom of the core shaft 411, and the lower sleeve 413 is relatively fixed to the core shaft 411. The lower end cover 432 is fixed to the bottom of the roller body 431, and the lower end cover 432 and the lower sleeve 413 are respectively below the lower bearing 425, and a gap is set between the lower end cover 432 and the lower sleeve 413.

[0066] In this embodiment, the lower end cover 432 is fixed to the bottom of the roller body 431, and the lower sleeve 413 is fixedly sleeved on the bottom of the core shaft 411. A radial gap is set between the lower end cover 432 and the lower sleeve 413, and the gap between the two is smaller than the inner diameter of the second oil inlet passage 4113. In this way, after the lubricating oil enters the space between the lower bearing 425 and the third oil seal 424 through the second oil inlet passage 4113, the lubricating oil first fills the space between the third oil seal 424 and the lower end cover 432, fully lubricating the lower bearing 425, and then slowly leaks out from the gap between the lower end cover 432 and the lower sleeve 413.

[0067] Alternatively, see Figure 7 The fixed component also includes a lower spacer sleeve 434, and the rotating component also includes a third bushing 416. The third bushing 416 is sleeved on the core shaft 411 and is located on the upper side of the lower bearing 425. The third bushing 416 and the core shaft 411 are interference fit. The lower spacer sleeve 434 and the roller body 431 can be interference fit. The third oil seal 424 is arranged between the third bushing 416 and the lower spacer sleeve 434. The third oil seal 424 and the lower spacer sleeve 434 rotate with the roller body 431. The third bushing 416 prevents the third oil seal 424 from causing wear on the core shaft 411 when it rotates. The top end of the lower spacer sleeve 434 can abut the step corresponding to the roller body 431, and the top end of the outer ring of the lower bearing 425 can abut the bottom end of the lower spacer sleeve 434, and the top end of the lower end cover 432 can abut the bottom end of the outer ring of the lower bearing 425, thereby axially limiting the outer ring of the lower bearing 425 through the lower spacer sleeve 434 and the lower end cover 432. The top end of the inner ring of the lower bearing 425 abuts the step corresponding to the core shaft 411, and the top end of the lower sleeve 413 abuts the bottom end of the inner ring of the lower bearing 425, thereby axially limiting the inner ring of the lower bearing 425. A bottom end plate can also be fixed to the bottom end of the core shaft 411 via bolts, thereby axially limiting the lower sleeve 413 through the bottom end plate.

[0068] Alternatively, see Figure 6 and Figure 9 The fixed component also includes a first bushing 414 and a second bushing 415, and the rotating component also includes an upper end cover 433 and an upper spacer sleeve 435. The second bushing 415 and the lower spacer sleeve 434 are located on the lower side of the upper bearing 421, and the second bushing 415 is interference fit with the core shaft 411, and the lower spacer sleeve 434 is interference fit with the roller body 431. The second oil seal 423 is arranged between the second bushing 415 and the upper spacer sleeve 435, and the second oil seal 423 and the upper spacer sleeve 435 rotate with the roller body 431. The first bushing 414 is interference fit in the outer wall of the convex ring on the lower side of the shaft top seat 412 (the top end of the core shaft 411 is inserted into the convex ring), and the upper end cover 433 is fixed to the roller body 431 by bolts. The upper end cover 433 and the upper spacer sleeve 435 realize axial limitation of the outer ring of the upper bearing 421. The first oil seal 422 is arranged between the first bushing 414 and the upper end cover 433. The first oil seal 422 and the upper end cover 433 rotate together with the roller body 431.

[0069] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0070] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. An entrance guide device, characterized in that: The invention comprises a frame (1), a guide roller (4) and two guide bodies (2) arranged on the frame (1); at least one of the guide bodies (2) can be slidably connected to the frame (1) in a direction approaching or moving away from the other guide body (2); the guide body (2) comprises a guide side plate (22); the guide side plates (22) of the two guide bodies (2) are arranged opposite to each other and are each provided with a first through groove (223) penetrating the thickness direction thereof; the guide roller (4) is arranged at the first through groove (223), and the axial direction of the guide roller (4) is parallel to the vertical direction; wherein the guide roller (4) comprises a fixed component and a rotating component; the fixed component is fixed relative to the guide body (2); the rotating component is movably sleeved on the fixed component; and a portion of the rotating component extends into the inner side of the corresponding guide side plate (22) through the first through groove (223) in its radial direction.

2. The entrance guide device according to claim 1, characterized in that: The guide body (2) further comprises a sliding base (21) and a guide top plate (23); a guide groove (211) is provided on the lower side of the sliding base (21); the sliding base (21) is slidably matched with the frame (1) through the guide groove (211); the bottom end of the guide side plate (22) is fixed on the sliding base (21); the guide top plate (23) is arranged on the top of the guide side plate (22), and the ends of the two guide top plates that are close to each other are located between the two guide side plates (22); the inlet guide device further comprises a driving hydraulic cylinder (3); the driving hydraulic cylinder (3) is located on the upper side of the frame (1), and the fixed end and the movable end of the driving hydraulic cylinder (3) are respectively connected to the frame (1) and the corresponding guide body (2).

3. The entrance guide device according to claim 2, characterized in that: The guide body (2) further includes a side wear-resistant plate (51), and the side of the two guide side plates (22) close to each other is respectively provided with the side wear-resistant plate (51), and the side wear-resistant plate (51) is provided with a first opening corresponding to the first through groove (223); and / or, the guide body (2) further includes a bottom wear-resistant plate (52), and the top surfaces of the two sliding bases (21) are respectively located between the two guide side plates (22) and are both provided with the bottom wear-resistant plate (52).

4. The entrance guide device according to claim 2, characterized in that: Along a sliding direction perpendicular to the guide body (2), the two guide side plates (22) each include a front side plate (221) and a rear side plate (222) connected in sequence, the two rear side plates (222) are arranged in parallel, and the spacing between the two front side plates (221) increases in a direction away from the rear side plates (222); and / or, along a sliding direction perpendicular to the guide body (2), the two guide top plates (23) each include a front top plate (231) and a rear top plate (232), the front top plate (231) is arranged horizontally, and the spacing between the rear top plate (232) and the sliding base (21) decreases in a direction away from the front top plate (231).

5. The entrance guide device according to claim 4, characterized in that: Each of the rear side plates (222) is provided with a first through groove (223), and a plurality of guide rollers (4) are provided at the first through groove (223), and the plurality of guide rollers (4) are arranged in sequence along a direction perpendicular to the sliding direction of the guide body (2); or, each of the rear side plates (222) is provided with a plurality of first through grooves (223) in sequence along a direction perpendicular to the sliding direction of the guide body (2), and a guide roller (4) is provided at each of the first through grooves (223).

6. The entrance guide device according to claim 5, characterized in that: It also includes a cooling water pipe (6), which is arranged on the frame (1) or the guide body (2). Along the direction perpendicular to the sliding direction of the guide body (2), the cooling water pipe (6) is located between the axes of two adjacent guide rollers (4), the axial direction of the cooling water pipe (6) is parallel to the axial direction of the guide roller (4), and the angles between the axes of the cooling water pipe (6) and the axes of the two adjacent guide rollers (4) are obtuse angles. A water inlet is arranged at the bottom of the cooling water pipe (6), and water spray outlets (61) are symmetrically arranged on the peripheral side walls of the top of the cooling water pipe (6), and the water spray outlets (61) face the adjacent and corresponding guide rollers (4).

7. The entrance guide device according to claim 2, characterized in that: The guide top plate (23) is provided with a second through groove (233) connected to the first through groove (223), and a notch is provided at one end away from the two second through grooves (233) on the two guide top plates (23); the upper side surface of the guide top plate (23) is also provided with a long strip groove (234), and the long strip groove (234) is connected to the second through groove (233) through an intermediate groove (236) at one end in its extension direction, wherein the width of the intermediate groove (236) is smaller than the width of the long strip groove (234); The fixing assembly comprises a first bolt (71), a movable column (235), a core shaft (411) and an axle top seat (412) fixed to the top of the core shaft (411); the movable column (235) is provided with a first threaded hole (2351) penetrating the core shaft in a radial direction; the axle top seat (412) is provided with a second threaded hole (4121), and the second threaded hole (4121) penetrates the axle top seat (412) in a direction perpendicular to the axial direction of the core shaft (411); the first bolt (71) is used to be connected to the second threaded hole (4121) and the first threaded hole (2351) in sequence, and the width of the intermediate groove (236) is greater than or equal to the inner diameter of the first threaded hole (2351); the guide roller (4) is used to be placed vertically at the first through groove (223) until the axle top seat (412) matches the second through groove (233), and the movable column (235) is placed in the elongated groove (234).

8. The entrance guide device according to any one of claims 1 to 7, characterized in that: The guide roller (4) further comprises an upper bearing (421), a first oil seal (422) and a second oil seal (423); the fixed component comprises a core shaft (411); the rotating component comprises a cylindrical roller body (431); the roller body (431) is sleeved on the core shaft (411); the upper bearing (421) is arranged between the roller body (431) and the top of the core shaft (411); the first oil seal (422) and the second oil seal (423) are respectively arranged between the roller body (431) and the core shaft (411); the first oil seal (422) is located on the upper side of the upper bearing (421); and the second oil seal (423) is located on the lower side of the upper bearing (421); A first oil inlet channel (4111) and a first oil outlet channel (4112) are provided inside the core shaft (411); one end of the first oil inlet channel (4111) passes through the top end of the core shaft (411), and the other end of the first oil inlet channel (4111) passes through between the core shaft (411) and the roller body (431), and the other end of the first oil inlet channel (4111) is located between the first oil seal (422) and the top end of the upper bearing (421); one end of the first oil outlet channel (4112) passes through the bottom end of the core shaft (411), and the other end of the first oil outlet channel (4112) passes through between the core shaft (411) and the roller body (431), and the other end of the first oil outlet channel (4112) is located between the second oil seal (423) and the bottom end of the upper bearing (421).

9. The entrance guide device according to claim 8, characterized in that: The guide roller (4) further comprises a lower bearing (425) and a third oil seal (424), wherein the lower bearing (425) is arranged between the roller body (431) and the bottom of the core shaft (411), and the third oil seal (424) is arranged between the roller body (431) and the core shaft (411), and the third oil seal (424) is located on the upper side of the lower bearing (425), and the third oil seal (424) is located below the second oil seal (423); a second oil inlet passage (4113) is arranged inside the core shaft (411), one end of the second oil inlet passage (4113) penetrates to the top end of the core shaft (411), and the other end of the second oil inlet passage (4113) penetrates to between the core shaft (411) and the roller body (431), and the other end of the second oil inlet passage (4113) is located between the third oil seal (424) and the top end of the lower bearing (425).

10. The entrance guide device according to claim 9, characterized in that: The fixing assembly also includes a lower sleeve (413) and a lower end cover (432), wherein the lower sleeve (413) is sleeved on the bottom of the core shaft (411), and the lower sleeve (413) and the core shaft (411) are relatively fixed, and the lower end cover (432) is fixed to the bottom of the roller body (431), and the lower end cover (432) and the lower sleeve (413) are respectively below the lower bearing (425), and a gap is set between the lower end cover (432) and the lower sleeve (413).

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