Hot-rolled strip coiling device, coiling and uncoiling system, coiling device layout structure

Abstract

This invention provides a hot-rolled strip coiling device, a coiling and uncoiling system, and an arrangement structure, including a conveyor roller conveyor for transporting hot-rolled strip and a ground-based coiler for coiling the strip. The coiling centerline of the ground-based coiler is above ground level. A strip conveying mechanism is provided between the conveyor roller conveyor and the ground-based coiler to transport the strip from the conveyor roller conveyor to the ground-based coiler. This invention utilizes the waste heat from hot-rolled strip steel production to produce green products such as large hot-bent structural steel sections, achieving energy conservation and emission reduction. The hot-rolled strip directly enters the ground-based coiling device for coiling via the conveying mechanism, avoiding temperature drop during transportation. The coil can be directly used for subsequent hot bending and forming processes. Furthermore, it reduces the construction costs of steel coil transportation and lifting equipment, cooling water ditch depth, foundation construction, and factory auxiliary facilities.

Description

Technical Field

[0001] This invention belongs to the field of metallurgical technology, and in particular relates to a hot-rolled strip coiling device, a coiling and uncoiling system, and a coiling device arrangement structure. Background Technology

[0002] Currently, underground coiling machines for hot-rolled strip generally coil thin strips with thicknesses ranging from 1.2 to 25.4 mm and widths from 600 to 2300 mm. The temperature is generally between 500 and 750°C. After coiling, the center of the steel coil is about -1300 mm from the ground level. The steel coil needs to be transported and raised to a ground level of +1000 mm or more before it can continue to be processed such as hot bending. However, during the process of transporting the steel coil to the ground, the temperature of the steel coil decreases further, which cannot meet the requirements for continued processing of hot-bent steel products. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a hot-rolled strip coiling device that reduces the steel coil lifting process, reduces temperature drop, and enables the steel coil to meet the production and processing needs of hot-bent structural steel and other materials.

[0004] To achieve the above and other related objectives, the present invention provides a hot-rolled strip coiling device, comprising a conveyor roller table for conveying hot-rolled strip and a ground coiler for coiling strip, wherein the coiling centerline of the ground coiler is above the ground elevation, and a strip conveying mechanism is provided between the conveyor roller table and the ground coiler for conveying strip from the conveyor roller table to the ground coiler.

[0005] Optionally, the strip conveyor mechanism is inclined, and the end connected to the conveyor roller is lower than the end connected to the ground winding machine.

[0006] Optionally, the strip conveying mechanism includes a guide pinch roller, an inclined roller table, and a curved pinch roller; the pinch roller is disposed between the conveying roller table and the inclined roller table for pinching the strip and redirecting the strip; the curved pinch roller is disposed between the outlet of the inclined roller table and the inlet of the ground coiler for guiding the strip to change direction and enter the ground coiler.

[0007] Optionally, the guide pinch roller includes a first oscillating pressure roller, a first upper moving pinch roller, and a first lower pinch roller, wherein the center line of the first upper moving pinch roller and the center line of the first lower pinch roller are offset in the vertical direction.

[0008] Optionally, the bending pinch roller includes a second oscillating pressure roller, a second upper moving pinch roller, and a second lower pinch roller, wherein the center line of the second upper moving pinch roller and the center line of the second lower pinch roller are offset in the vertical direction.

[0009] Optionally, the ground winding machine includes a frame, an expansion and contraction drum mounted on the frame, auxiliary winding rollers, and a transmission device thereof, wherein the auxiliary winding rollers are three or four arranged circumferentially.

[0010] Optionally, the ground-based winding machine is a drumless winding machine, including a frame, auxiliary winding rollers mounted on the frame and their transmission device, wherein the auxiliary winding rollers are three or four arranged circumferentially.

[0011] Optionally, when there are three auxiliary winding rollers, the included angle between adjacent auxiliary winding rollers along the circumference is 100 to 140 degrees; when there are four auxiliary winding rollers, the included angle between adjacent auxiliary winding rollers along the circumference is 70 to 120 degrees.

[0012] Optionally, the tilt angle of the inclined roller conveyor relative to the horizontal direction is less than 30 degrees.

[0013] The present invention also provides a hot-rolled strip coiling and uncoiling system, including the aforementioned hot-rolled strip coiling device, wherein an uncoiling trolley is arranged on one side of the ground coiler, the center line of the ground coiler in the strip width direction corresponds to the strip center line of the upstream hot rolling line, and the center line of the uncoiling trolley in the steel coil width direction corresponds to the strip center line of the downstream production line.

[0014] Optionally, an uncoiling device and a straightening machine are provided downstream of the uncoiling car. The uncoiling device includes a drive mechanism, a support structure, a swing seat, and an upper rotating roller, a lower rotating roller, and a swing cutter head for uncoiling, all mounted on the swing seat. The swing seat is mounted on the support structure and can swing relative to the support structure within a specified range. Under the action of the drive mechanism, the swing seat moves closer to or away from the steel coil as the support structure moves. The upper rotating roller is used to contact the steel coil during uncoiling, and the lower rotating roller is used to press open the strip head of the steel coil.

[0015] The present invention also provides an arrangement structure for a hot-rolled strip coiling device, including the aforementioned hot-rolled strip coiling device, wherein the above-ground coiling machine is arranged after the four-high mill of a hot-rolled medium-thick plate production line or a furnace coiling mill production line, before the cooling bed; or after the cooling bed; or after the underground coiling machine; or the above-ground coiling machine is arranged after the finishing mill of a hot continuous rolling production line or after the underground coiling machine.

[0016] The present invention also provides an arrangement structure for a hot-rolled strip coiling device, including the aforementioned hot-rolled strip coiling device. The ground coiler is arranged after the roughing mill of a hot-rolled medium-thick plate production line or a furnace coil mill production line, and can be pushed and pulled as a whole into and out of the production line towards the drive side.

[0017] As described above, this invention has the following beneficial effects: it utilizes the waste heat from hot-rolled strip steel production to produce green products such as structural steel and large hot-bent steel sections, thus saving energy and reducing emissions. The hot-rolled strip is directly fed into a ground-based coiling device via a conveying mechanism, avoiding temperature drops during transportation. The coil can then be directly used for subsequent hot bending and forming processes. Furthermore, it reduces the construction costs of steel coil transportation and lifting equipment, cooling water ditch depth, foundation construction, and factory auxiliary facilities. This invention can be used for the construction of new hot-rolled strip equipment or the technical upgrading of existing production lines, enabling the cross-production of conventional hot-rolled strip coils, large hot-bent steel sections, and other products requiring high-temperature, ultra-thick, and ultra-wide strips, or for connection to hot-rolled strip shearing production line equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the elevation layout of the hot-rolled strip winding device in one embodiment (the opening position of the three auxiliary winding rollers);

[0019] Figure 2 This is a schematic diagram of the elevation layout of the hot-rolled strip winding device in one embodiment (minimum position of the four auxiliary winding rollers);

[0020] Figure 3 This is a schematic diagram of the elevation arrangement of the above-ground and underground coiling machines for hot-rolled strip in another embodiment;

[0021] Figure 4 This is a schematic plan view (top view) of the hot-rolled strip coiling device in one embodiment;

[0022] Figure 5 This is a schematic diagram of the underground coil transport equipment in one embodiment;

[0023] Figure 6 This is a schematic diagram of a structure in one embodiment, in which an unwinding device and a straightening machine are arranged.

[0024] Figure 7 for Figure 6 Mid-range view;

[0025] Figure 8 for Figure 7 Schematic diagram of the structure of the unwinding device;

[0026] Figure 9 This is a schematic diagram of the assembly structure of the oscillating cutter head;

[0027] Figure 10 This is a schematic diagram showing the arrangement of the three auxiliary winding rollers;

[0028] Figure 11 This is a schematic diagram showing the arrangement of the four auxiliary winding rollers;

[0029] Figure 12This is a schematic diagram of the layout of the hot-rolled strip coiling device in a medium-thick plate production line or a furnace coil mill production line in one embodiment.

[0030] Figure 13 This is a schematic diagram of the arrangement of a hot-rolled strip coiling device in a hot continuous rolling production line in one embodiment.

[0031] Figure 14 This is a schematic diagram of the arrangement of a hot-rolled strip coiling device in a thick plate production line or a furnace coil mill production line (overall lateral pushing and pulling).

[0032] Part number explanation:

[0033] 100-Above-ground winding machine; 11-Frame; 12-Auxiliary winding roller; 13-Expansion / contraction drum; 21-Conveyor roller conveyor; 22-First oscillating pressure roller; 23-First upper moving pinch roller; 24-First lower pinch roller; 25-Inclined roller conveyor; 26-Second oscillating pressure roller; 27-Second upper moving pinch roller; 28-Second lower pinch roller; 29-Swing gate; 300-Underground winding machine; 31-Intermediate roller conveyor; 32-Bundling machine ; 33-Coil transport vehicle; 34-Steel coil transport equipment; 4-Coil unloading vehicle; 5-Strip; 6-Steel coil; 7-Uncoiling device; 71-Rotary drive mechanism; 72-Support structure; 73-Support shaft; 74-Swing seat; 75-Swing cutter head; 76-Upper roller; 77-Lower roller; 78-Support frame; 79-Swing drive mechanism; 7a-First limit block; 7b-Second limit block; 8-Straightening machine; 9-Strip head. Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0035] Example 1

[0036] like Figure 1 and Figure 2 As shown in the figure, this embodiment illustrates a hot-rolled strip coiling device, which includes a conveyor roller 21 for conveying hot-rolled strip and a ground coiler 100 for coiling strip 5. The coiling centerline of the ground coiler 100 is above the ground elevation. A strip conveying mechanism is provided between the conveyor roller 21 and the ground coiler 100 for conveying the strip from the conveyor roller 21 to the ground coiler 100.

[0037] The center line of the coiler, i.e. the center line of the drum (when there is a drum) or the center line of the steel coil, is at or above the ground elevation ±0 (including ±0).

[0038] Typically, the elevation of a hot rolling line is insufficient to reach the height of the inlet of the ground coiler 100. Therefore, the strip conveying mechanism is tilted, and the end connected to the conveyor roller 21 is lower than the end connected to the ground coiler 100, so as to lift and convey the strip to the ground coiler 100. The conveyor roller 21 mentioned in this example can be a newly added roller. When used in a hot rolling line, the conveyor roller 21 can be part of the original production line.

[0039] Specifically, the strip conveying mechanism includes a guide pinch roller, an inclined roller table 25, and a curved pinch roller; the pinch roller is disposed between the conveying roller table 21 and the inclined roller table 25 for pinching the strip 5 and redirecting the strip 5; the curved pinch roller is disposed between the outlet of the inclined roller table 25 and the inlet of the ground coiler 100 for guiding the strip 5 to change direction and enter the ground coiler 100.

[0040] The guide pinch roller includes a first oscillating pressure roller 22, a first upper moving pinch roller 23, and a first lower pinch roller 24. The first oscillating pressure roller 22 is located above the conveyor roller table 21 near the exit position. The center line of the first upper moving pinch roller 23 and the center line of the first lower pinch roller 24 are staggered in the vertical direction, that is, they are arranged one in front of the other along the conveying direction of the strip. The first lower pinch roller 24 is a fixed roller, and the moving direction of the first upper moving pinch roller 23 is the up and down direction.

[0041] The bending pinch roller includes a second oscillating pressure roller 26, a second upper moving pinch roller 27, and a second lower pinch roller 28. The second oscillating pressure roller 26 is located above the end of the inclined roller table 25. The center line of the second upper moving pinch roller 27 and the center line of the second lower pinch roller 28 are staggered in the vertical direction, that is, they are arranged one in front of the other along the conveying direction of the strip. The second upper moving pinch roller 27 can move in the up and down direction. The second lower pinch roller 28 is a fixed roller, or it can move back and forth along the conveying direction of the strip 5 to adapt to different strip thicknesses and feeding angles.

[0042] In one embodiment, the ground-based winding machine 100 includes a frame 11, an expansion and contraction drum 13 mounted on the frame 11, auxiliary winding rollers 12, and a transmission device thereof. The auxiliary winding rollers 12 are three or four arranged circumferentially around the winding center. The frame 11, the expansion and contraction drum 13, the auxiliary winding rollers 12, and the transmission device may employ existing structures. During the strip winding process, the auxiliary winding rollers 13 can continuously participate in the strip winding process, or intermittently participate in the strip winding process, depending on the strip thickness.

[0043] In one embodiment, the ground winding machine 100 is a coreless winding machine, that is, the expansion and contraction drum 13 and its drum transmission device, drum swing external support, etc. are eliminated; it includes a frame 11, auxiliary winding rollers 12 arranged on the frame 11 and their transmission device, wherein there are three or four auxiliary winding rollers 12 arranged circumferentially.

[0044] When there are three auxiliary winding rollers 12, the included angles a1, a2, and a3 of adjacent auxiliary winding rollers 12 along the circumferential direction are 100 to 140 degrees, respectively. Figure 10 As shown; when there are four auxiliary winding rollers 12, the included angles b1, b2, b3, and b4 of adjacent auxiliary winding rollers 12 along the circumferential direction are 70 to 120 degrees, respectively. Figure 11 As shown. There are arc-shaped guide plates between the winding rollers, and the guide plate belt head passes through the winding.

[0045] In some embodiments, the tilt angle of the inclined roller conveyor 25 relative to the horizontal direction is less than 30 degrees, that is, less than or equal to 30 degrees.

[0046] The above-mentioned ground winding device can be used in new production lines or in the renovation of old production lines.

[0047] Example 2

[0048] like Figures 3 to 5 As shown, the difference between this example and Embodiment 1 is that the hot-rolled strip coiling device also includes an underground coiler 300. The centerline elevation of the underground coiler 300's drum is lower than the ground elevation. A swing gate 29, which can swing up and down, is also provided between the guide pinch roller and the inclined roller conveyor 25. The swing gate 29 can be driven by a hydraulic cylinder to guide the strip 5 into the inclined roller conveyor 25 or the underground coiler 300. That is, when the swing gate 29 swings to the upward position, the strip 5 is guided through the inclined roller conveyor 25 into the ground coiler 100. When the swing gate 29 swings to the downward position, the strip 5 is guided into the underground coiler 300. This structure can be applied to the renovation of production lines equipped with underground coilers 300, and can simultaneously produce conventional hot-rolled strip coils, high-temperature ultra-thick and ultra-wide strips required for large hot-bent steel sections, or connect to hot-rolled strip shearing and edge trimming, and cut-to-length strip production line equipment.

[0049] The underground coiler 300 is equipped with an unloading trolley 4, a bundling machine 32, a coil transport trolley 33, and a steel coil transport equipment 34, as shown in the figure. Two underground coilers 300 and their auxiliary equipment are arranged along the conveying direction of the strip 5, and one above-ground coiler 100. An intermediate roller conveyor 31 is set between the two underground coilers 300 to transport the strip 5. An inclined roller conveyor 25 is used to connect the conveying roller conveyor 21 and the above-ground coiler 100. When the above-ground coiler 100 is selected for coiling, the strip 5 passes through the two underground coilers 300 via the inclined roller conveyor 25. When the underground coiler 300 is selected, the strip 5 is transported via the conveying roller conveyor 21 or the intermediate roller conveyor 31. The coil transport trolley 33 includes a horizontal moving device, a coil support roller lifting device, and a coil support roller positioning device. The steel coil transport equipment 34 can be selected and combined from various options, such as a lifting traveling trolley, a transport chain, a lifting stepping beam, and a lifting traveling pallet roller trolley, as needed. The steel coil transport equipment 34 can transport the coil in one of the left or right directions shown in the figure.

[0050] Example 3

[0051] like Figures 6 to 9 As shown, this example illustrates a hot-rolled strip coiling and uncoiling system. The difference from embodiments 1 and 2 is that an unloading carriage 4 is arranged on one side of the ground coiler 100. The centerline of the ground coiler 100 in the width direction of the strip 5 corresponds to the centerline of the strip 5 in the width direction of the upstream hot rolling line, and the centerline of the unloading carriage 4 in the width direction of the steel coil corresponds to the centerline of the strip 5 in the downstream production line, so that the steel coil can be fed into the downstream production line for subsequent production. The unloading carriage 4 includes a horizontal moving device, a coil support roller lifting device, a roller positioning device, etc.

[0052] Downstream of the uncoiling car 4, there is an uncoiling device 7 and a straightening machine 8, which are used to straighten the strip after uncoiling. The uncoiling device 7 includes a drive mechanism, a support structure 72, a swing seat 74, and an upper rotating roller 76, a lower rotating roller 77 and a swing cutter head 75 for uncoiling, which are arranged on the swing seat 74. The swing seat 74 is installed on the support structure 72 and can swing relative to the support structure within a certain range. Under the action of the drive mechanism, it moves closer to or away from the steel coil 6 with the support structure 72. The upper rotating roller 76 is used to contact the steel coil 6 when uncoiling, and the lower rotating roller 77 is used to press open the strip head of the steel coil 6.

[0053] The upper rotating roller 76 is rotatably mounted on the swing base 74 via a first rotating shaft along its own axis, and the lower rotating roller 77 is rotatably mounted on the swing base 74 via a second rotating shaft along its own axis. In this example, the upper rotating roller 76 and the lower rotating roller 77 are symmetrically arranged on both sides of the swing cutter head 75.

[0054] In one embodiment, the swing seat 74 is swingably mounted on the support structure 72, and a limiting structure for limiting the swing range of the swing seat 74 is provided between the support structure 72 and the swing seat 74. The swing seat 74 is swingably mounted on the support structure 72, and the angle of the swing seat 74 is not fixed. It can swing freely within a certain range. When uncoiling, it can adaptively fit the steel coil, adapt to steel coils of different diameters, and is easy to adaptively adjust its contact with the steel coil.

[0055] Specifically, a support shaft 73 is provided on the support structure 72, and the swing seat 74 is sleeved on the support shaft 73 and can swing around the support shaft 73 within a limited range. In this example, the limiting structure includes two first limiting blocks 7a spaced apart circumferentially along the support shaft 73 and a second limiting block 7b provided on the swing seat 74. The second limiting block 7b is located between the two first limiting blocks 7a, so that when the second limiting block 7b rotates, it abuts against the first limiting block 7a, thereby limiting the swing angle. In another embodiment, the two first limiting blocks 7a are provided on the swing seat 74, and the second limiting block 7b is provided on the support shaft 73, with the second limiting block 7b located between the two first limiting blocks 7a.

[0056] The drive mechanism at least causes the swing seat 74 to press down towards and away from the steel coil. In one embodiment, the drive mechanism includes a rotary drive mechanism 71 and a swing drive mechanism 79. The uncoiling device also includes a support frame 78. The swing drive mechanism 79 and the support structure 72 are both mounted on the support frame 78. The rotary drive mechanism 71 is connected to the support frame 78 and is used to drive the support frame 78 to rotate. The support structure 72 is rotatably mounted on the support frame 78. The first end of the support structure 72 is connected to the swing seat 74. Specifically, the swing seat 74 is oscillatingly mounted on the first end of the support structure 72 within a certain range. The second end of the support structure 72 is connected to the swing drive mechanism 79.

[0057] The above structure uses two drive mechanisms to achieve the pressing and angle adjustment actions, which together drive the uncoiling swing cutter head 75 to swing up, down, left, and right. The swing drive mechanism 79 is used to drive the support structure 72 to swing in the up and down direction on the support frame 78 to adjust the orientation of the swing seat 74; while the rotation drive mechanism 71 drives the entire device to press down and lift through the support frame 78.

[0058] In this example, the rotary drive mechanism 71 is a swing cylinder or a hydraulic cylinder, and the swing drive mechanism 79 is a push cylinder. One end of the push cylinder is rotatably connected to the support frame 78, and the other end is rotatably connected to the second end of the support structure 72. The support frame 78 has two arms, one of which is hinged to the push cylinder, and the other arm is rotatably connected to the middle of the support structure 72. When the rotary drive mechanism 71 is a swing cylinder, the center of the swing cylinder is the rotation center of the support frame 78. When the rotary drive mechanism 71 is a hydraulic cylinder, the hydraulic cylinder is hinged to the middle of the support frame 78, and the bottom of the support frame 78 is the pivot point.

[0059] Since the strip head is in close contact with the steel coil 6, the upper rotating roller 76 and the oscillating cutter head 75 need to be in close contact with the steel coil 6 to open the strip head 9 for uncoiling. Then, the uncoiling oscillating cutter head 75 opens the strip head 9 of the steel coil 6, and the lower rotating roller 77 presses the strip head onto the roller conveyor, conveying it into the downstream pinch rollers and straightener, avoiding scratching the strip. During the process of the upper rotating roller 76 being in close contact with and sliding relative to the steel coil, the upper rotating roller 76 rotates to avoid scratching the steel coil. This structure can achieve uncoiling of the strip head 9 of the steel coil 6 without warping, and the upper rotating roller 76 facilitates contact with the steel coil 6 and avoids scratching. Furthermore, multiple drive mechanisms can achieve combined lateral and vertical movements; the oscillating seat 74 can oscillate within a certain range relative to the support structure 72, facilitating adaptive contact with the steel coil 6 and easy positioning.

[0060] The straightened steel sheet can be sent to downstream production lines for hot bending, shearing, or the production of other structural steel. The straightening machine includes two rotating oscillating support rollers, front and rear clamping rollers, the straightening machine itself (five-roll, seven-roll, or nine-roll), and its motor, reducer, hydraulic cylinder transmission device, and insulation cover. The support rollers support and rotate the steel coil, causing the strip to enter the clamping rollers and the straightening machine for straightening, and then conveying it to the hot-forming structural steel production line equipment. These structures utilize existing equipment and will not be described in detail further.

[0061] Example 4

[0062] like Figure 12 As shown, this example provides an arrangement structure for a hot-rolled strip coiling device, including the hot-rolled strip coiling device described in Embodiment 1 or 2. The above-ground coiler 100 is arranged after the four-high mill of a hot-rolled medium-thick plate production line or a furnace coil mill production line, before the cooling bed; or after the cooling bed; or after the underground coiler. This allows for the production of both conventional hot-rolled medium-thick plates and strips, as well as hot-bent structural steel medium-thick plates and strips.

[0063] Example 5

[0064] like Figure 13 As shown, this example provides an arrangement structure for a hot-rolled strip coiling device, including the hot-rolled strip coiling device described in Embodiment 1 or 2, wherein the ground coiler 100 is arranged after the finishing mill of the hot continuous rolling production line. This allows for the production of both conventional hot-rolled strip coils and hot-bent structural steel strip coils.

[0065] Example 6

[0066] like Figure 14 As shown, this example provides an arrangement structure for a hot-rolled strip coiling device, including the hot-rolled strip coiling device described in Embodiment 1 or 2. The ground coiler 100 is arranged after the roughing mill of a hot-rolled medium-thick plate production line or a furnace coiling mill production line. It can be pushed and pulled into and out of the production line as a whole towards the drive side, and supplemented with roller conveyors and / or inclined roller conveyors laid flat downwards and connected to conveyor roller conveyors, for producing high-temperature hot-bent structural steel strips and / or producing conventional hot-rolled strips. When pulled out of the production line as a whole, it is for producing conventional hot-rolled plates; when entering the production line, it can be used to produce high-temperature hot-bent structural steel strips; it can be pushed and pulled into and out of the production line as a whole without affecting conventional production.

[0067] In the above embodiments 4-6, the above-ground winding machine 100 can be used alone, or the above-ground winding machine 100 and the underground winding machine 300 can be set up at the same time.

[0068] This invention meets the needs of production and processing equipment for large hot-bent structural steel sections. The strip thickness can reach 5mm to 50mm, the width 600mm to 5000mm, and the temperature around 900℃. After coiling, the center of the steel coil is approximately +1000mm above the ground level, allowing it to directly enter the high-temperature shearing and forming processes for hot-bent steel sections. This invention can be used for the construction of new hot-rolled strip equipment or the technical upgrading of existing production lines, enabling the cross-production of conventional hot-rolled strip coils, large hot-bent steel sections, and other products requiring high-temperature ultra-thick and ultra-wide strips, or connecting to hot-rolled strip shearing production line equipment. The ground coiler in zone 100 can raise the ground elevation by approximately 2400mm, reducing the costs of steel coil transportation and lifting equipment, cooling water trench depth, foundation construction, and factory auxiliary facilities.

[0069] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A hot-rolled strip coiling and uncoiling system, characterized in that: It includes a conveyor roller table for conveying hot-rolled strip and an above-ground coiler for coiling the strip. The coiling centerline of the above-ground coiler is above the ground elevation. A strip conveying mechanism is provided between the conveyor roller table and the above-ground coiler to deliver the strip from the conveyor roller table to the above-ground coiler. The strip conveying mechanism is inclined, and the end connected to the conveyor roller table is lower than the end connected to the above-ground coiler. The strip conveying mechanism includes a guide pinch roller, an inclined roller table, and a curved pinch roller. The pinch roller is disposed between the conveying roller table and the inclined roller table for pinching the strip and redirecting its direction. The curved pinch roller is disposed between the outlet of the inclined roller table and the inlet of the ground coiler for guiding the strip to change direction and enter the ground coiler. The guide pinch roller includes a first oscillating pressure roller, a first upper moving pinch roller, and a first lower pinch roller. The centerline of the first upper moving pinch roller is vertically offset from the centerline of the first lower pinch roller. A second oscillating pressure roller is located above the end of the inclined roller table. The curved pinch roller includes a second oscillating pressure roller, a second upper moving pinch roller, and a second lower pinch roller. The centerline of the second upper moving pinch roller is vertically offset from the centerline of the second lower pinch roller. A coil unloading trolley is arranged on one side of the ground coiler. The centerline of the ground coiler in the strip width direction corresponds to the strip centerline of the upstream hot rolling line, and the centerline of the coil unloading trolley in the strip width direction corresponds to the strip centerline of the downstream production line. Downstream of the coil unloading trolley, an uncoiling device and a straightener are arranged. The uncoiling device includes a drive mechanism, a support structure, a swing seat, and an upper rotating roller, a lower rotating roller, and a swing cutter head for uncoiling, all mounted on the swing seat. The swing seat is mounted on the support structure and can swing relative to the support structure within a specified range. Under the action of the drive mechanism, the swing seat moves closer to or away from the coil as the support structure moves. The upper rotating roller is used to contact the coil during uncoiling, and the lower rotating roller is used to press open the strip head of the coil.

2. The hot-rolled strip coiling and uncoiling system according to claim 1, characterized in that: The ground-based winding machine includes a frame, an expansion and contraction drum mounted on the frame, auxiliary winding rollers, and a transmission device thereof, wherein the auxiliary winding rollers are three or four arranged circumferentially; or the ground-based winding machine is a drumless winding machine, including a frame, auxiliary winding rollers mounted on the frame, and a transmission device thereof, wherein the auxiliary winding rollers are three or four arranged circumferentially.

3. The hot-rolled strip coiling and uncoiling system according to claim 2, characterized in that: When there are three auxiliary winding rollers, the included angle between adjacent auxiliary winding rollers along the circumference is 100 to 140 degrees; when there are four auxiliary winding rollers, the included angle between adjacent auxiliary winding rollers along the circumference is 70 to 120 degrees.

4. The hot-rolled strip coiling and uncoiling system according to claim 1, characterized in that: The tilt angle of the inclined roller conveyor relative to the horizontal direction is less than 30 degrees.

5. The hot-rolled strip coiling and uncoiling system according to claim 1, characterized in that: The hot-rolled strip coiling and uncoiling system also includes an underground coiler, the center line elevation of which is lower than the ground elevation. A swing gate that can swing up and down is also provided between the pinch roller and the inclined roller table to guide the strip into the inclined roller table or the underground coiler.

6. The hot-rolled strip coiling and uncoiling system according to any one of claims 1-5, characterized in that: The above-ground coiler is located after the four-high rolling mill of a hot-rolled medium-thick plate production line or a furnace coil rolling mill production line, and before or after the cooling bed; Alternatively, the ground coiler may be located after the finishing mill of a hot continuous rolling production line.

7. The hot-rolled strip coiling and uncoiling system according to claim 5, characterized in that: The above-ground coiler is located after the underground coiler in the hot-rolled medium-thick plate production line or the furnace coil mill production line. Alternatively, the above-ground coiler may be located after the underground coiler in the hot continuous rolling production line.

8. The hot-rolled strip coiling and uncoiling system according to any one of claims 1-5, characterized in that: The above-ground coiler is located after the roughing mill of the hot-rolled medium-thick plate production line or the furnace coil rolling mill production line, and can be pushed and pulled as a whole into and out of the production line towards the drive side.

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