Continuous and rapid turning conveying system and method for plate blanks

Abstract

The invention discloses a plate blank continuous and rapid turning conveying system and method, and belongs to the technical field of metallurgy and mechanical equipment. The plate blank continuous and rapid turning conveying system comprises an inlet device, a collecting roller way, a turning roller way and an output roller way which are sequentially arranged between a continuous casting production line and a steel rolling production line; the turning roller way comprises a first fan-shaped roller way, and the first fan-shaped roller way is connected with a second fan-shaped roller way through a tangential roller way; the first fan-shaped roller way and the second fan-shaped roller way have respective turning radiuses; the tangential roller way is a straight roller way, and the conveying direction is along the tangential direction of the first fan-shaped roller way and the second fan-shaped roller way; and an included angle between two ends of the first and second fan-shaped roller ways is a small included angle. By arranging the inlet device and the collecting roller way, single continuous transportation of multi-stream slabs can be realized, the conveying time is shortened, and the heat loss is reduced; the two sections of fan-shaped roller ways and the tangential roller way are arranged, a slab is turned by 90 degrees after being turned twice, the slab can be rapidly and continuously fed into a steel rolling production line, heat loss is lower, the overall manufacturing cost is lower, and the occupied area is smaller.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgy and mechanical equipment, and in particular relates to a slab continuous and rapid direction-changing conveying system and a conveying method. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] The steel industry is a high-energy-consuming industry. Energy conservation and consumption reduction has always been an important topic in the steel industry. Hot delivery technology for continuous casting billets is an important measure for energy conservation and consumption reduction. Fast, low-temperature and low-energy delivery of billets to the rolling mill to achieve hot delivery and hot loading of billets can effectively reduce energy consumption per ton of steel, reduce the production cost per ton of steel, protect the environment and improve the profitability of steel companies.

[0004] However, steel enterprises in different regions have different geographical conditions. It has always been a problem for steel enterprises to realize the rapid hot delivery of steel billets from the steelmaking workshop to the rolling workshop. Especially when the continuous casting production line and the rolling production line are located in different directions, the hot delivery roller needs to turn and change direction to deliver the steel billets to the rolling production line. As for slabs, due to their large size and heavy weight, they are more often transported by car, which has problems such as slow delivery speed, discontinuity, uncontrollable delivery process, and large heat loss.

[0005] Patent CN101698223A discloses a continuous casting billet turning arc roller, including a feed roller, a turning roller and a discharge roller. The feed roller and the discharge roller are perpendicular to each other, and the turning roller is a concentric arc roller.

[0006] However, the above solution has the following technical problems:

[0007] 1) The situation of conveying slabs from multiple continuous casting production lines is not considered;

[0008] 2) It is suitable for the production of small square billets. When applied to slabs, due to the large size of the slabs, it is necessary to ensure that the turning roller is wide enough, or the turning radius of the turning roller is large enough, which leads to a long conveying distance, a lower hot charging temperature of the slabs, a large heat loss, and a high manufacturing cost and a large footprint. Summary of the invention

[0009] In view of the above problems, the present invention provides a slab continuous and rapid direction-changing conveying system and method. By setting an entrance device and a collecting roller, the slabs can be conveyed from multiple continuous casting production lines to a steel rolling production line. By setting two sections of fan-shaped rollers and a tangential roller located in the middle for connection, the slab changes direction twice and completes a 90-degree turn, so the slabs can be quickly and continuously conveyed to the steel rolling production line.

[0010] To achieve the above object, the present invention adopts the following technical solutions:

[0011] In a first aspect, a slab continuous rapid direction-changing conveying system is provided, comprising a plurality of continuous casting production lines and a steel rolling production line, wherein an inlet device, a collecting roller table, a direction-changing roller table, and an output roller table are sequentially arranged between the continuous casting production line and the steel rolling production line;

[0012] The direction-changing roller adopts a single-drive straight roller, including a first sector roller, which is connected to a second sector roller through a tangential roller; the first sector roller and the second sector roller each have their own turning radius; the tangential roller is a straight roller, and its conveying direction is along the tangent direction of the first sector roller and the second sector roller;

[0013] The angles between the two ends of the first sector roller and the second sector roller are both small angles.

[0014] Preferably, in the direction-changing roller conveyor, the axis of each single-drive straight roller is arranged along the normal line of the conveying direction of the direction-changing roller conveyor; and baffles are provided on both side edges of the direction-changing roller conveyor.

[0015] Preferably, the inlet device comprises a plurality of lifting baffles, which are mounted on an integral frame, and the integral frame is arranged at the inlet of the converging roller; the specific number of the lifting baffles is consistent with the number of the continuous casting production line.

[0016] Preferably, each lifting baffle includes a slide plate and a hydraulic cylinder. The slide plate is slidably connected to the corresponding slide plate bracket and is fixed above the overall frame through the slide plate bracket. The hydraulic cylinder is fixed below the overall frame, and the output end of the hydraulic cylinder is connected to the bottom of the slide plate.

[0017] Preferably, the lifting baffle is also provided with a sensor, which is arranged on the side of the skateboard bracket facing the continuous casting production line and is used to detect whether there is a slab on the continuous casting production line; the sensor and the hydraulic cylinder are both connected to the controller.

[0018] Preferably, the converging roller is composed of a single-drive straight roller and a guide plate, the length of the single-drive straight roller is always slightly larger than half the width of the converging roller, and a staggered overlapping arrangement is adopted; the guide plate is arranged on both sides of the edge of the converging roller; the converging roller includes a first converging roller, and the second converging roller is connected to the rear of the first converging roller.

[0019] Preferably, the width of the first converging roller is always consistent, and in the first converging roller, the axis of the single-drive straight roller is arranged perpendicular to the conveying direction.

[0020] Preferably, the second converging roller adopts a funnel form with a large width at the inlet and a small width at the outlet. In the second converging roller, the axis of the single-drive straight roller is arranged at a set angle to the conveying direction.

[0021] Preferably, the output roller conveyor is a straight roller conveyor composed of a single-drive straight roller and a baffle; the width of the output roller conveyor is slightly larger than the width of the slab to ensure that only one slab can pass through.

[0022] In the second aspect, a conveying method of a slab continuous rapid direction-changing conveying system is provided, and the specific steps are as follows:

[0023] When the sensor transmits back a signal indicating that only one continuous casting production line has slabs, the controller drives the lifting baffle corresponding to the continuous casting production line to open continuously; when there are slabs on multiple continuous casting production lines, the controller controls the lifting baffle to open and close in sequence, so that the slabs on each continuous casting production line can enter the collecting roller table one by one in sequence;

[0024] In the converging roller, the slabs enter the second converging roller through the first converging roller under the action of the guide plate; then the slabs enter the first sector roller one by one in sequence for the first turn;

[0025] Then the slab goes directly from the first sector roller to the tangential roller and is quickly transported to the second sector roller for the second turn.

[0026] Finally, the slab completes the turn on the second sector roller and is sent to the output roller to achieve a 90° turn.

[0027] Compared with the prior art, the present invention has the following advantages and positive effects:

[0028] The present invention can transport slabs from multiple continuous casting production lines to steel rolling production lines by arranging an inlet device and a collecting roller, thereby realizing single continuous transportation of multi-stream slabs, shortening the transportation time and reducing heat loss; by arranging two sections of fan-shaped rollers and a tangential roller located in the middle for connection, the slabs change direction twice and complete a 90-degree turn, thereby realizing direction-changing transportation of large-sized slabs, solving the problem that the continuous casting production line and the steel rolling production line are not in the same straight line, and can quickly and continuously transport the slabs to the steel rolling production line, with lower heat loss, lower overall manufacturing cost and smaller footprint. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0030] Figure 1 1 is a schematic diagram of the overall layout of a continuous and rapid direction-changing conveying system according to an embodiment of the present invention;

[0031] Figure 2 is a schematic diagram of an inlet device according to an embodiment of the present invention;

[0032] Figure 3 is a schematic diagram of a single-drive straight roller according to an embodiment of the present invention;

[0033] In the figure:

[0034] 1. Entrance device; 11. Lifting baffle; 111. Slide plate; 112. Hydraulic cylinder; 12. Overall frame; 2. Converging roller; 21. First converging roller; 22. Second converging roller; 23. Single-drive straight roller; 3. Direction-changing roller; 31. First sector roller; 32. Tangential roller; 33. Second sector roller; 4. Output roller. DETAILED DESCRIPTION

[0035] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0036] The present invention is described in detail below in conjunction with the accompanying drawings.

[0037] Example 1

[0038] This embodiment discloses a slab continuous rapid change of direction conveying system, such as Figure 1 As shown, it includes a continuous casting production line, the outlet of the continuous casting production line is provided with an inlet device 1, the inlet of a converging roller table 2 is provided behind the inlet device 1, the outlet of the converging roller table 2 is connected to the inlet of a changing roller table 3, the outlet of the changing roller table 3 is connected to the inlet of an output roller table 4, and the outlet of the output roller table 4 is connected to the inlet of a steel rolling production line.

[0039] like Figure 1 , Figure 2 As shown, the entrance device 1 is composed of a plurality of lifting baffles 11 and an overall frame 12, each lifting baffle 11 includes a slide plate 111 and a hydraulic cylinder 112, wherein the slide plate 111 is fixed on the upper part of the overall frame 12 through a corresponding slide plate bracket. It can be understood that the slide plate 111 is slidably connected to the corresponding slide plate bracket.

[0040] There are multiple continuous casting production lines, and the specific number of lifting baffles 11 is consistent with the number of continuous casting production lines, ensuring that each continuous casting production line corresponds to a lifting baffle. In this embodiment, the number of lifting baffles is four, and the number of continuous casting production lines is also four. All lifting baffles are installed on an integral frame 12 to ensure reliable structural strength. The integral frame 12 is fixedly arranged at the entrance of the converging roller 2.

[0041] The hydraulic cylinder 112 is fixedly arranged below the overall frame 12, and the output end of the hydraulic cylinder 112 is connected to the bottom of the slide 111; by individually controlling the drive of the hydraulic cylinder, the corresponding slide 111 can be lifted and lowered individually, thereby controlling the slab on the continuous casting production line to enter the collecting roller 2.

[0042] In this embodiment, the lifting baffle 11 is also provided with a sensor, which is arranged on the side of the slide bracket facing the continuous casting production line, and is used to detect whether there is a slab on the continuous casting production line. The sensor and the hydraulic cylinder are both connected to the controller. It can be understood that the controller is a prior art. The sensor transmits the detection signal to the controller, and the controller determines which hydraulic cylinders to drive to act according to the transmitted signal.

[0043] When the signals transmitted back by the four sensors indicate that only one of the continuous casting production lines has slabs, the controller drives the hydraulic cylinder in the lifting baffle 11 corresponding to the continuous casting production line to open the slide plate 111, thereby opening the channel to the converging roller, so that the slabs on the continuous casting production line enter the converging roller one by one in sequence.

[0044] When the signals transmitted back by the four sensors indicate that there are slabs on two, three or four continuous casting production lines, the controller will control the lifting baffles 11 to open and close in sequence. For example, one lifting baffle 11 is opened first, and it is closed after the slab on the continuous casting production line passes through. Then another lifting baffle 11 is opened, and it is closed after the slab on the continuous casting production line passes through. Then the next lifting baffle 11 is opened, and the process is repeated in sequence to ensure that the slabs on each continuous casting production line can enter the converging roller 2, and that the slabs can enter the converging roller 2 one by one in sequence.

[0045] That is to say, in this embodiment, four lifting baffles 11 are used to control whether the slabs on the four continuous casting production lines enter the converging roller 2 respectively, and only one lifting baffle 11 is opened at a time to ensure that the slabs enter the converging roller 2 one by one in sequence.

[0046] like Figure 1 As shown, the converging roller 2 includes a first converging roller 21, the front of the first converging roller 21 is the inlet device 1, and the rear of the first converging roller 21 is connected to the second converging roller 22. The first converging roller 21 and the second converging roller 22 are both composed of a single-drive straight roller 23 and a guide plate; Figure 3 As shown, the single-drive straight roller 23 adopts the existing technology, and is composed of a motor, a coupling, a roller and a base; the roller shape of the single-drive straight roller 23 is cylindrical, and the slab is driven to move by the rotation of the roller.

[0047] The difference between the first converging roller 21 and the second converging roller 22 is that the width of the first converging roller 21 is always the same, while the second converging roller 22 adopts a funnel form with a large width at the entrance and a small width at the exit. That is to say, in the first converging roller 21, the axis of the single-drive straight roller 23 is arranged perpendicular to the conveying direction, and in the second converging roller 22, the axis of the single-drive straight roller 23 is arranged at a set angle to the conveying direction, which is convenient for the converging of the slabs.

[0048] like Figure 1 As shown, the length of the single-drive straight roller 23 gradually decreases from the entrance to the exit of the second converging roller 22. It can be understood that in the converging roller 2, the length of the single-drive straight roller 23 is always slightly larger than half the width of the converging roller 2, and is arranged in a staggered overlap. Guide plates are provided on both sides of the edge of the converging roller 2 to guide the slabs entering therein so that they eventually enter the second converging roller 22 and then enter the direction-changing roller 3 in a single order.

[0049] like Figure 1 As shown, the direction-changing roller 3 includes a first sector roller 31, the first sector roller 31 is connected to one end of the tangential roller 32, and the other end of the tangential roller 32 is connected to the second sector roller 33. Among them, the first sector roller 31 and the second sector roller 33 each have their own turning radius, which can be the same or different, without specific restrictions; the tangential roller 32 is a straight roller, and its conveying direction is along the tangent direction of the first sector roller 31 and the second sector roller 33. It should be noted that the angle between the two ends of the first sector roller 31 and the second sector roller 33 is a small angle. In this embodiment, the angle between the two ends of the first sector roller 31 and the second sector roller 33 is not greater than 30°, so that the turning conveying distance of the slab on the sector roller can be limited. In other embodiments, due to the limitation of the site, the angle between the two ends of one sector roller will reach 45-50°. Correspondingly, under the action of the tangential roller, the angle between the two ends of the other sector roller will be smaller. In this embodiment, baffles are provided on both side edges of the direction-changing roller conveyor 3, which can not only prevent the slab from rushing out of the roller conveyor, but also play a guiding role in the fan-shaped roller conveyor.

[0050] In this embodiment, the direction-changing rollers 3 also adopt single-drive straight rollers, and the axis of each single-drive straight roller is arranged along the normal line of the conveying direction of the direction-changing rollers 3, providing a turning force for the slab to ensure that the slab can turn smoothly. In the direction-changing rollers 3, the roller length of the single-drive straight rollers is the width of the direction-changing rollers 3. The width of the direction-changing rollers 3 is set according to the actual size of the slab and the turning radius of the two sector rollers used, and needs to meet the turning requirements that the slab can turn smoothly without being stuck.

[0051] In this embodiment, a larger turning radius is selected for the two sector rollers. This is because the size of the slab is large and the angle between the two ends of the two sector rollers is small. If a smaller turning radius is selected, although the conveying distance is short, the slab will be stuck in the roller when being conveyed in the two sector rollers due to the small turning radius.

[0052] The tangential roller 32 connects the tangent direction of the two sector rollers. The slab enters the tangential roller 32 from the first sector roller, and is then directly sent to the second sector roller by the tangential roller 32, and finally enters the output roller, realizing a 90° turn from the convergence roller to the output roller. Compared with the traditional curved roller, this method has the advantages of fast turning and short conveying distance, low overall cost and small footprint.

[0053] Under the condition that the width of the roller is the same, a traditional 90° arc roller is selected to transport the slabs. Due to the longer length of continuous turns and the large size of the slabs, in order to ensure that the slabs will not get stuck during transportation, the selected turning radius will be larger. This causes the slabs to be transported in a longer arc roller, which requires continuous turning, a longer transportation distance, higher energy consumption, a large overall footprint, and high manufacturing costs.

[0054] If the turning radius is made consistent with that in the present embodiment, in order to prevent the slab from getting stuck, the roller must be widened to allow the slab to turn continuously in the arc roller with a small turning radius to ensure that the slab will not get stuck during the turning process. This method also has the disadvantages of occupying a large area and high manufacturing cost.

[0055] The arrangement of two sector rollers with a small angle and a turning radius that matches the length of the slab not only allows the slab to pass smoothly on the first sector roller 31 and the second sector roller 33, but also shortens the turning distance of the slab; the arrangement of a tangential roller 32 between the two sector rollers not only reduces the turning length of the slab, but also speeds up the transportation of the slab. The direction-changing roller of this embodiment has a shorter conveying distance and is more energy-efficient, occupies a smaller area, and has a lower manufacturing cost.

[0056] like Figure 1 As shown, the outlet of the second sector roller 33 is connected to the output roller 4, which is a section of straight roller, consisting of a single-drive straight roller and a baffle. The width of the output roller is slightly larger than the width of the slab, ensuring that only one slab can pass through. The slab is finally conveyed by the output roller 4 into the steel rolling production line.

[0057] Example 2

[0058] This embodiment discloses a conveying method of a slab continuous rapid direction-changing conveying system, which uses a slab continuous rapid direction-changing conveying system in Embodiment 1, and the specific steps are as follows:

[0059] When the signal transmitted back by the sensor indicates that there is slab on only one continuous casting production line, the controller drives the hydraulic cylinder in the lifting baffle 11 corresponding to the continuous casting production line to open the slide plate 111 and the passage to the converging roller table, so that the slabs on the continuous casting production line enter the converging roller table one by one in sequence;

[0060] When the sensor transmits back signals that there are slabs on multiple continuous casting production lines, the controller controls the lifting baffles to open and close in sequence, so that the slabs on each continuous casting production line can enter the converging roller table one by one in sequence;

[0061] Under the action of the guide plate, the slab enters the second converging roller table through the first converging roller table;

[0062] Then the slabs enter the first sector roller table one by one in order to make the first turn;

[0063] Then the slab goes directly from the first sector roller to the tangential roller and is quickly transported to the second sector roller for the second turn.

[0064] Finally, the slab completes the turn on the second sector roller and is sent to the output roller to achieve a 90° turn.

[0065] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A slab continuous fast direction-changing conveying system, comprising a plurality of continuous casting production lines and a steel rolling production line, characterized in that: An inlet device, a collecting roller table, a direction-changing roller table, and an output roller table are sequentially arranged between the continuous casting production line and the steel rolling production line; The direction-changing roller adopts a single-drive straight roller, including a first sector roller, which is connected to a second sector roller through a tangential roller; the first sector roller and the second sector roller each have their own turning radius; the tangential roller is a straight roller, and its conveying direction is along the tangent direction of the first sector roller and the second sector roller; The angles between the two ends of the first sector roller and the second sector roller are both small angles.

2. A slab continuous rapid direction-changing conveying system as claimed in claim 1, characterized in that: In the direction-changing roller conveyor, the axis of each single-drive straight roller is arranged along the normal line of the conveying direction of the direction-changing roller conveyor; baffles are arranged on both side edges of the direction-changing roller conveyor.

3. A slab continuous rapid direction-changing conveying system as claimed in claim 1, characterized in that: The inlet device comprises a plurality of lifting baffles, which are mounted on an integral frame, and the integral frame is arranged at the inlet of the converging roller table; the specific number of the lifting baffles is consistent with the number of the continuous casting production line.

4. A slab continuous rapid direction-changing conveying system as claimed in claim 3, characterized in that: Each lifting baffle comprises a slide plate and a hydraulic cylinder. The slide plate is slidably connected to the corresponding slide plate bracket and is fixed above the overall frame through the slide plate bracket. The hydraulic cylinder is fixed below the overall frame, and the output end of the hydraulic cylinder is connected to the bottom of the slide plate.

5. A slab continuous rapid direction-changing conveying system as claimed in claim 4, characterized in that: The lifting baffle is also provided with a sensor, which is arranged on the side of the slide plate bracket facing the continuous casting production line and is used to detect whether there is a slab on the continuous casting production line; the sensor and the hydraulic cylinder are both connected to the controller.

6. A slab continuous rapid direction-changing conveying system as claimed in claim 1, characterized in that: The converging roller is composed of a single-drive straight roller and a guide plate. The length of the single-drive straight roller in the converging roller is always slightly larger than half the width of the converging roller, and a staggered overlapping arrangement is adopted; the guide plate is arranged on both sides of the edge of the converging roller; the converging roller includes a first converging roller, and the second converging roller is connected to the rear of the first converging roller.

7. A slab continuous rapid direction-changing conveying system as claimed in claim 6, characterized in that: The width of the first converging roller conveyor is always consistent, and the axis of the single-drive straight roller in the first converging roller conveyor is arranged perpendicular to the conveying direction.

8. A slab continuous rapid direction-changing conveying system as claimed in claim 6, characterized in that: The second converging roller adopts a funnel form with a large width at the inlet and a small width at the outlet. The axis of the single-drive straight roller in the second converging roller is arranged at a set angle to the conveying direction.

9. A slab continuous rapid direction-changing conveying system as claimed in claim 1, characterized in that: The output roller table is a straight roller table composed of a single-drive straight roller and a baffle; the width of the output roller table is slightly larger than the width of the slab to ensure that only one slab can pass through.

10. A conveying method of a slab continuous rapid direction-changing conveying system according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: When the sensor transmits back a signal indicating that only one continuous casting production line has slabs, the controller drives the lifting baffle corresponding to the continuous casting production line to open continuously; when there are slabs on multiple continuous casting production lines, the controller controls the lifting baffle to open and close in sequence, so that the slabs on each continuous casting production line can enter the collecting roller table one by one in sequence; In the converging roller, under the action of the guide plate, the slab enters the second converging roller through the first converging roller; Then they enter the first sector roller conveyor one by one in order to make the first turn; Then the slab goes directly from the first sector roller to the tangential roller and is quickly transported to the second sector roller for the second turn. Finally, the slab completes the turn on the second sector roller and is sent to the output roller to achieve a 90° turn.

Images