Steel billet scheduling method and steel billet production line

Abstract

The invention provides a billet scheduling method and a billet production line, and relates to the technical field of billet production. The steel billet scheduling method comprises the steps that under the condition that the steel-making speed of a steel-making production workshop is equal to the steel rolling speed of a steel rolling production workshop, steel billets are conveyed between the steel-making production workshop and the steel rolling production workshop through a steel billet conveying roller way; under the condition that the steelmaking speed of the steelmaking production workshop is higher than the steel rolling speed of the steel rolling production workshop, splitting is conducted on the steel billet conveying roller way, or part of steel billets are stored in a heat preservation pit; under the condition that a steelmaking production workshop breaks down, the steel billets are arranged side by side on the steel billet conveying roller way; under the condition that a steel rolling production workshop breaks down, splitting is carried out on the steel billet conveying roller way, a heat preservation pit is used for storing part of steel billets, the steel billet dispatching method can reasonably dispatch the steel billets, and the steel billet conveying efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of steel billet production, and in particular to a steel billet scheduling method and a steel billet production line. Background Art

[0002] In a steel production plant, after the steelmaking workshop completes the casting of the red billet, the billet needs to be transported from the steelmaking workshop to the steel rolling workshop for rolling. In this process, the temperature of the red billet must be guaranteed as much as possible. Increasing the rolling temperature of the red billet is beneficial to saving gas consumption during the rolling process.

[0003] During the transportation of steel billets, the steel billets are generally transported from the steelmaking production workshop to the corresponding steel rolling production workshop. The steelmaking speed of the steelmaking production workshop matches the rolling speed of the steel rolling production workshop. If the steelmaking speed of the steelmaking production workshop is greater than the rolling speed of the steel rolling production workshop or a failure occurs in the steel rolling production workshop, material pile-up is likely to occur. If a failure occurs in the steelmaking production workshop, the subsequent steel rolling process cannot proceed normally. At present, it is impossible to achieve reasonable scheduling of steel billets, resulting in low efficiency in steel billet transportation. Summary of the invention

[0004] The purpose of the present application includes, for example, providing a billet scheduling method, which can reasonably schedule the billets and improve the billet conveying efficiency.

[0005] The purpose of this application also includes providing a steel billet production line, which can reasonably schedule the steel billets and improve the efficiency of steel billet transportation.

[0006] The embodiments of the present application can be implemented as follows:

[0007] An embodiment of the present application provides a steel billet scheduling method, which includes:

[0008] When the steelmaking speed of the steelmaking workshop is equal to the steel rolling speed of the steel rolling workshop, the steel billets are transported between the steelmaking workshop and the steel rolling workshop by using a steel billet conveying roller;

[0009] When the steelmaking speed of the steelmaking workshop is higher than the steel rolling speed of the steel rolling workshop, the billets are decoupled on the billet conveying roller to convey the billets to multiple steel rolling workshops, or a portion of the billets are stored in the insulation pit;

[0010] In case of a failure in the steelmaking workshop, the steel billets are transported in parallel on the billet conveying roller table to transport the steel billets to the steel rolling workshop through other steelmaking workshops;

[0011] In case of a failure in a steel rolling production workshop, the billets are decoupled on the billet conveying roller table to convey part of the billets to other steel rolling production workshops, and part of the billets are stored in the insulation pit.

[0012] Optionally, the step of decoupling the steel billets on the steel billet conveying roller to convey the steel billets to multiple steel rolling production workshops includes:

[0013] A plurality of sub-conveyor rollers are separated from the billet conveyor roller, and the billets are conveyed to a plurality of steel rolling production workshops using the sub-conveyor rollers.

[0014] Optionally, a first collecting roller and a second collecting roller connected to each other are provided on one side of the billet conveying roller, and the number of the insulation pits is multiple, and the multiple insulation pits are arranged on the side of the second collecting roller away from the billet conveying roller, and the multiple insulation pits are arranged in sequence along the direction in which the second collecting roller is away from the billet conveying roller;

[0015] The steps of using a holding pit to store part of the billets include:

[0016] Pushing the steel billet on the steel billet conveying roller table to the first collecting roller table by using a steel pusher;

[0017] When the number of steel billets on the first collecting roller conveyor reaches a preset number, conveying the steel billets from the first collecting roller conveyor to the second collecting roller conveyor;

[0018] The control unit is used to control the steel taking machine and the cover opening machine to move along the arrangement direction of the insulation pit on the track;

[0019] During the movement of the steel taking machine and the cover opening machine, the cover opening machine is used to open the insulation cover on the top of any insulation pit, and then the steel taking machine is used to clamp the steel billet on the second collecting roller and place it in the insulation pit, and finally the cover opening machine is used to cover the insulation cover on the top of the insulation pit.

[0020] Optionally, a plurality of stop limiters are provided on the track, and the positions of the plurality of stop limiters match the positions of the plurality of insulation pits. In the step of using a control unit to control the steel taking machine and the cover opening machine to move along the arrangement direction of the insulation pits on the track, when the steel taking machine or the cover opening machine passes through any of the stop limiters, the control unit is used to control the steel taking machine or the cover opening machine to stop moving.

[0021] Optionally, a rejection mechanism is provided on one side of the second collecting roller, and after the step of conveying the steel billets from the first collecting roller to the second collecting roller, the rejection mechanism is used to reject unqualified steel billets on the second collecting roller.

[0022] Optionally, the step of arranging the billets on the billet conveying rollers in parallel to convey the billets to the steel rolling production workshop through other steelmaking production workshops includes:

[0023] Other billet conveying rollers are incorporated into the billet conveying rollers to convey billets to the steel rolling production workshop via other steelmaking production workshops.

[0024] Optionally, the steps of performing decoupling on the billet conveying roller to convey part of the billets to other steel rolling production workshops, and using the insulation pit to store part of the billets include:

[0025] A plurality of sub-conveyor rollers are separated from the billet conveyor roller, and the billets on one of the sub-conveyor rollers are stored in a heat preservation pit, and the remaining sub-conveyor rollers are used to convey the billets to other steel rolling production workshops.

[0026] Optionally, the billet conveying roller table includes a converging roller table, a curved roller table, a climbing roller table and a furnace front roller table connected in sequence, the steel rolling production workshop includes a heating furnace and a rolling mill, and the billet scheduling method further includes:

[0027] The merging roller, the curved roller, the climbing roller and the furnace front roller are used to transport steel billets between the steelmaking production workshop and the heating furnace, wherein the highest end of the climbing roller is at the same height as the entrance of the heating furnace.

[0028] Optionally, the converging roller conveyor includes at least two rows of roller conveyors, and the odd-numbered conveying rollers in each row of the roller conveyors are controlled by one control cabinet, and the even-numbered conveying rollers in each row of the roller conveyors are controlled by another control cabinet.

[0029] The present application also provides a billet production line, which applies the billet scheduling method. The billet production line includes a steelmaking production workshop, a steel rolling production workshop, a billet conveying roller and an insulation pit. The billet conveying roller is connected between the steelmaking production workshop and the steel rolling production workshop, and the insulation pit is arranged on one side of the billet conveying roller.

[0030] The beneficial effects of the steel billet scheduling method and the steel billet production line provided in the embodiments of the present application include, for example: in order to reasonably schedule the steel billets and improve the steel billet conveying efficiency, a steel billet scheduling method is designed. Under normal working conditions, the steelmaking speed of the steelmaking production workshop is equal to the steel rolling speed of the steel rolling production workshop. At this time, the steel billet conveying roller can be used to convey the steel billets between the steelmaking production workshop and the steel rolling production workshop; when the steelmaking speed of the steelmaking production workshop is greater than the steel rolling speed of the steel rolling production workshop, the steel billet conveying roller is decoupled to convey the steel billets to multiple steel rolling production workshops. In the case of a malfunction in the steelmaking workshop, the billet conveying rollers are paralleled to transport the billets to the steel rolling workshop through other steelmaking workshops, thereby ensuring the normal progress of the steel rolling process; in the case of a malfunction in the steel rolling workshop, the billet conveying rollers are decoupled to transport part of the billets to other steel rolling workshops, and the insulation pits are used to store part of the billets, thereby preventing the billet conveying rollers from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 This is a schematic diagram of a steel billet production line in an embodiment of the present application.

[0033] Icons: 100- billet conveying roller; 110- converging roller; 120- curved roller; 130- climbing roller; 140- furnace front roller; 200- insulation pit; 300- first collecting roller; 400- second collecting roller; 500- rejecting mechanism. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] In the description of the present application, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, it is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the product of the invention is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0038] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0039] It should be noted that, in the absence of conflict, the features in the embodiments of the present application may be combined with each other.

[0040] Please refer to Figure 1 An embodiment of the present application provides a billet production line, including a steelmaking production workshop, a steel rolling production workshop, a billet conveying roller 100 and an insulation pit 200. The billet conveying roller 100 is connected between the steelmaking production workshop and the steel rolling production workshop, and the insulation pit 200 is arranged on one side of the billet conveying roller 100.

[0041] The billet conveying roller 100 can convey the billets produced by the steelmaking production workshop to the steel rolling production workshop for rolling, and the insulation pit 200 can store the billets on the billet conveying roller 100 .

[0042] The bearing seats on both sides of the conveying rollers on the billet conveying roller table 100 are equipped with a circulating water cooling and lubrication system, which can remove heat in time and ensure lubrication, thereby preventing the bearings from failing due to heat radiation from the billet.

[0043] A first collecting roller 300 and a second collecting roller 400 connected to each other are arranged on one side of the billet conveying roller 100, and the total length of the first collecting roller 300 and the second collecting roller 400 is greater than or equal to twice the length of the billet. There are multiple insulation pits 200, and the multiple insulation pits 200 are arranged on the side of the second collecting roller 400 away from the billet conveying roller 100, and the multiple insulation pits 200 are arranged in sequence along the direction in which the second collecting roller 400 is away from the billet conveying roller 100. A rejection mechanism 500 for rejecting unqualified billets is arranged on the side of the second collecting roller 400 away from the insulation pit 200.

[0044] The billet production line further includes a control unit, a steel taker, a cover opener and a track, wherein the track extends along the second collecting roller 400 in a direction away from the billet conveying roller 100, and the steel taker and the cover opener can move along the track under the control of the control unit. A plurality of stop limiters are arranged on the track along its length direction, and the positions of the plurality of stop limiters match the positions of the plurality of insulation pits 200.

[0045] The insulation pit 200 is composed of a five-sided structure. The four side walls can be optionally formed by stacking refractory clay bricks with a thickness of 230 mm, lightweight clay bricks with a thickness of 115 mm, aluminum silicate insulation boards with a thickness of 100 mm, and aluminum silicate fiber blankets with a thickness of 25 mm. The bottom wall can be optionally formed by stacking reinforced concrete, insulation layer, reinforced concrete and insulation blocks. Adjacent insulation pits 200 can be optionally separated by a lightweight clay brick structure with a thickness of 580 mm.

[0046] The hot billets in the insulation pit 200 are a kind of feedback for the incoming materials needed for steel rolling. When the steel rolling process stops for a short time or has an indirect failure, the insulation pit 200 temporarily stores the billets produced by steelmaking and continuous casting. This part of the billets is stored in the insulation pit 200 close to the second collecting roller 400 for timely extraction. As for the billets produced by steelmaking and continuous casting that are not included in the steel rolling production plan temporarily, the insulation pit 200 can store them for a long time. Therefore, this part of the billets is stored in the insulation pit 200 far away from the second collecting roller 400, and the billets are released after the steel rolling production plan is implemented.

[0047] Each insulation pit 200 has a certain storage capacity to store multiple layers of blanks. The number of layers of blanks that can be stored depends on the storage capacity of the insulation pit 200 designed according to actual production usage.

[0048] The embodiment of the present application also provides a billet scheduling method, including the following four working conditions:

[0049] The first working condition: when the steelmaking speed of the steelmaking production workshop is equal to the steel rolling speed of the steel rolling production workshop, the steel billet conveying roller 100 is used to convey the steel billets between the steelmaking production workshop and the steel rolling production workshop.

[0050] Under this working condition, the two ends of the billet conveying roller 100 are respectively connected to a single steelmaking production workshop and a single rolling production workshop. Since the steelmaking speed of the steelmaking production workshop is equal to the rolling speed of the rolling production workshop, the billet conveying roller 100 can meet the needs of normal production at this time.

[0051] The second working condition: when the steelmaking speed of the steelmaking production workshop is greater than the steel rolling speed of the steel rolling production workshop, the billets are decoupled on the billet conveying roller 100 to convey the billets to multiple steel rolling production workshops, or the insulation pit 200 is used to store part of the billets.

[0052] Under this working condition, the first scheduling method is: one end of the billet conveyor roller 100 is connected to a single steelmaking production workshop, and the billet conveyor roller 100 is connected to multiple steel rolling production workshops after being decoupled. Although the steelmaking speed of the steelmaking production workshop is greater than the rolling speed of the steel rolling production workshop, the billets produced by a single steelmaking production workshop are transported to multiple steel rolling production workshops through the decoupled billet conveyor roller 100, so that it is not easy to cause piles. The second scheduling method is: some of the billets on the billet conveyor roller 100 are stored in the insulation pit 200, so that it is also not easy to cause piles.

[0053] The third working condition: in case of a failure in the steelmaking production workshop, the billets are transported in parallel on the billet conveying roller table 100 to transport the billets to the steel rolling production workshop through other steelmaking production workshops.

[0054] Under this working condition, if a single steelmaking production workshop fails, one end of the other billet conveying rollers 100 arranged in parallel on the original billet conveying roller 100 is connected to the other steelmaking production workshop, and the other end is connected to the steel rolling production workshop. Billets are transported to the steel rolling production workshop through the other steelmaking production workshops to ensure that the rolling process in the steel rolling production workshop proceeds normally.

[0055] The fourth working condition: in the event of a failure in a steel rolling production workshop, the billet conveying roller 100 is decoupled to convey part of the billets to other steel rolling production workshops, and part of the billets are stored in the insulation pit 200.

[0056] Under this working condition, a single steel rolling production workshop fails, and one end of the billet conveyor roller 100 is connected to a single steelmaking production workshop. After the billet conveyor roller 100 is decoupled, it is connected to both the original steel rolling production workshop and other steel rolling production workshops. A portion of the billets on the billet conveyor roller 100 connected to the original steel rolling production workshop are stored in the insulation pit 200, and the billet conveyor roller 100 connected to other steel rolling production workshops conveys another portion of the billets to other steel rolling production workshops.

[0057] Furthermore, in the second working condition, the steps of performing decoupling on the billet conveying roller table 100 to convey the billets to multiple steel rolling production workshops include:

[0058] A plurality of sub-conveyor rollers are decomposed from the billet conveyor roller 100, and the billets are conveyed to a plurality of steel rolling production workshops using the sub-conveyor rollers.

[0059] A plurality of sub-conveyor rollers are decomposed from the billet conveyor roller 100, that is, the billet conveyor roller 100 is decoupled. The decoupling process of the billet conveyor roller 100 is similar to that of a train track. The plurality of sub-conveyor rollers can be decomposed from the billet conveyor roller 100 by an external driving device or manually. After the plurality of sub-conveyor rollers are decomposed, the plurality of sub-conveyor rollers are utilized to convey the billets to a plurality of steel rolling production workshops. The billets are reasonably dispatched, thereby preventing the occurrence of material piling.

[0060] Furthermore, in the second working condition and the fourth working condition, the step of storing part of the steel billets in the heat preservation pit 200 includes:

[0061] The steel billet on the steel billet conveying roller table 100 is pushed to the first collecting roller table 300 by using a steel pusher.

[0062] When the number of steel billets on the first collecting roller table 300 reaches a preset number, the steel billets are transported from the first collecting roller table 300 to the second collecting roller table 400 .

[0063] The control unit is used to control the steel taking machine and the cover opening machine to move along the arrangement direction of the insulation pit 200 on the track.

[0064] During the movement of the steel taking machine and the cover opening machine, the cover opening machine is used to open the insulation cover on the top of any insulation pit 200, and then the steel taking machine is used to clamp the steel billet on the second collecting roller 400 and place it in the insulation pit 200, and finally the cover opening machine is used to cover the insulation cover on the top of the insulation pit 200.

[0065] It should be noted that the clamp on the steel taking machine can be selected as a non-rotating eight-legged square billet clamp. The steel pusher adopts a double hydraulic cylinder to drive the clamp to move and clamp the steel billet. When the steel billet is conveyed to one side of the first collecting roller 300, the steel pusher uses its own multiple pushing forks to push the steel billet to the first collecting roller 300. The first collecting roller 300 is provided with a width measuring instrument for measuring the width of the steel billet. The width of the steel billet measured by the width measuring instrument matches the number of steel billets. The control unit is electrically connected to the width measuring instrument and the driving member on the first collecting roller 300 at the same time. When the width measuring instrument measures that the total width of all the steel billets on the first collecting roller 300 reaches a preset width, that is, when the number of steel billets on the first collecting roller 300 reaches a preset number, the control unit controls the driving member on the first collecting roller 300 to start, so as to transport the steel billets from the first collecting roller 300 to the second collecting roller 400. Finally, the control unit is used to control the steel taking machine and the cover opening machine to move along the arrangement direction of the insulation pit 200 on the track. In this process, the cover opening machine first opens the cover of the insulation pit 200, and the steel taking machine places the steel billets on the second collecting roller 400 in the insulation pit 200. The steel taking machine is reset, and the cover opening machine covers the insulation pit 200 again, and finally the cover opening machine is reset.

[0066] There are two tracks arranged opposite to each other along the movement direction of the clamp, and the two rollers are arranged above the insulation pit 200. The steel taking machine and the cover opening machine cooperate with the two tracks at the same time to ensure the smoothness of the movement; the length of the track is greater than or equal to the sum of the width of all the insulation pits 200, the width of the steel taking machine and the width of the cover opening machine. Once the steel taking machine fails, the original overhead crane in the factory can be used to uninterruptedly extract the steel billet into the insulation pit 200 to ensure normal production. In addition, when the steel taking machine or the cover opening machine needs to be overhauled, the steel taking machine or the cover opening machine will be parked on the track section exceeding the width of the insulation pit 200 to facilitate the overhaul of the steel taking machine or the cover opening machine.

[0067] Furthermore, in the step of using the control unit to control the steel taking machine and the cover opening machine to move on the track along the arrangement direction of the insulation pit 200, when the steel taking machine or the cover opening machine passes through any stop limiter, the control unit is used to control the steel taking machine or the cover opening machine to stop moving.

[0068] In order to ensure that the cover-lifting machine can accurately complete the cover-lifting and cover-recovering actions, and to ensure that the steel-taking machine can accurately place the steel billet in the insulation pit 200 or clamp the steel billet from the insulation pit 200, a stop limiter is set at the position corresponding to each insulation pit 200. When the cover-lifting machine passes through any stop limiter, the control unit is used to control the cover-lifting machine to stop moving. At this time, the position of the cover-lifting machine matches that of the insulation pit 200, and the cover-lifting machine can more accurately complete the cover-lifting and cover-recovering actions; when the steel-taking machine passes through any stop limiter, the control unit is used to control the steel-taking machine to stop moving. At this time, the position of the steel-taking machine matches that of the insulation pit 200, and the steel-taking machine can more accurately place the steel billet in the insulation pit 200 or clamp the steel billet from the insulation pit 200.

[0069] Furthermore, after the step of conveying the steel billets from the first collecting roller table 300 to the second collecting roller table 400 , the rejecting mechanism 500 is used to reject unqualified steel billets on the second collecting roller table 400 .

[0070] It should be noted that the rejection mechanism 500 is a reciprocating platform, and a device for detecting the size and composition of the steel billet is provided at the rejection mechanism 500. When it is detected that the size or composition of the steel billet is not in compliance, the rejection mechanism 500 will reject the unqualified steel billet outside the steel billet conveying roller 100 to wait for subsequent processing.

[0071] Furthermore, in the third working condition, the steps of arranging on the billet conveying roller 100 to convey the billets to the steel rolling production workshop through other steelmaking production workshops include:

[0072] Other billet conveying roller tables 100 are incorporated into the billet conveying roller table 100 to convey billets to the steel rolling production workshop via other steelmaking production workshops.

[0073] In the event of a malfunction in a steelmaking production workshop, other billet conveying rollers 100 are merged into the original billet conveying rollers 100. The process of paralleling the billet conveying rollers 100 is similar to that of a train track. The action of merging other billet conveying rollers 100 can be performed by an external driving device or manually. After the other billet conveying rollers 100 are merged into the original billet conveying rollers 100, other steelmaking production workshops connected to the other billet conveying rollers 100 can convey billets to the steel rolling production workshop. The number of other billet conveying rollers 100 merged can be determined according to actual working conditions.

[0074] Furthermore, in the fourth working condition, the steps of performing decoupling on the billet conveying roller table 100 to convey part of the billets to other steel rolling production workshops, and using the insulation pit 200 to store part of the billets include:

[0075] A plurality of sub-conveyor rollers are decomposed from the billet conveyor roller 100, and the billets on one of the sub-conveyor rollers are stored in a heat preservation pit 200, and the remaining sub-conveyor rollers are used to convey the billets to other steel rolling production workshops.

[0076] In the event of a malfunction in a steel rolling production workshop, the original steel rolling production workshop is unable to accept steel billets. At this time, multiple sub-conveyor rollers are decomposed from the steel billet conveyor roller 100. This action is similar to the decoupling action in the second working condition. One of the sub-conveyor rollers is still connected to the original steel rolling production workshop, but when the steel billets on the sub-conveyor roller reach the insulation pit 200, the steel taking machine is used to place the steel billets in the insulation pit 200 for storage, and the remaining sub-conveyor rollers are connected to other steel rolling production workshops, and the steel billets on the remaining sub-conveyor rollers are transported to other steel rolling production workshops.

[0077] The steel billet scheduling method further includes:

[0078] A steel taking machine is used to take steel from the second collecting roller 400 or the insulation pit 200 and distribute it to the insulation vehicle, which then transports the steel billets to the steel rolling production workshop. This method can promote the rapid rotation of the billets in the insulation pit 200 and save a large amount of capital investment.

[0079] In some embodiments, the billet conveying roller 100 includes a converging roller 110, a curved roller 120, a climbing roller 130 and a furnace front roller 140 connected in sequence, and the steel rolling production workshop includes a heating furnace and a rolling mill. When entering the steel rolling production workshop, the billet passes through the heating furnace and the rolling mill in sequence. The converging roller 110 is connected to the steelmaking production workshop, and the furnace front roller 140 is connected to the heating furnace, wherein the highest end of the climbing roller 130 is consistent with the entrance height of the heating furnace.

[0080] The converging roller 110 is used to receive the billets produced by the steelmaking workshop. The shape of the curved roller 120 is adapted to the layout of the plant area and can be an S-curved roller. The height of the climbing roller 130 is gradually raised until it is consistent with the entrance height of the heating furnace. A roller interface for paralleling and decoupling is reserved between the curved roller 120 and the climbing roller 130 to facilitate paralleling and decoupling.

[0081] The steel billet scheduling method further includes:

[0082] The merging roller 110, the curved roller 120, the climbing roller 130 and the furnace front roller 140 are used to transport the steel billets between the steelmaking production workshop and the heating furnace.

[0083] When the billets produced in the steelmaking production workshop need to be transported to the heating furnace for supplementary heating, the billets are sequentially transported into the heating furnace via the converging roller 110, the curved roller 120, the climbing roller 130 and the furnace front roller 140. As the height of the climbing roller 130 is gradually raised until it is consistent with the entrance height of the heating furnace, the height difference between the continuous casting machine in the steelmaking process and the heating furnace in the steel rolling process is eliminated, the heat loss of the billets is reduced, and the preheating temperature of the billets for steel rolling is increased.

[0084] In some embodiments, when the steel rolling process is performed at a low temperature, or when the temperature of the billet before entering the furnace has reached a preset temperature, the billet can be directly transported to the rolling mill for rolling without passing through a heating furnace, thereby reducing the heating link and saving energy.

[0085] In addition, the converging roller conveyor 110 includes at least two roller conveyor columns, the conveying rollers with odd numbers in each roller conveyor column are controlled by one control cabinet, and the conveying rollers with even numbers in each roller conveyor column are controlled by another control cabinet.

[0086] Any row of rollers on the converging roller table 110 can convey the blanks. Two inverter control cabinets are used to control the odd-numbered and even-numbered conveying rollers in each row of rollers respectively, so that the conveying speed is adjustable and controllable. If the odd-numbered conveying rollers fail, the control cabinet can also control the even-numbered conveying rollers to continue conveying the blanks; if the even-numbered conveying rollers fail, the control cabinet can also control the odd-numbered conveying rollers to continue conveying the blanks.

[0087] In summary, the embodiment of the present application provides a billet scheduling method and a billet production line. Under normal working conditions, the steelmaking speed of the steelmaking production workshop is equal to the rolling speed of the steel rolling production workshop. At this time, the billet conveying roller 100 is used to convey the billets between the steelmaking production workshop and the steel rolling production workshop; when the steelmaking speed of the steelmaking production workshop is greater than the rolling speed of the steel rolling production workshop, the billets are decoupled on the billet conveying roller 100 to convey the billets to multiple steel rolling production workshops, or the insulation pit 200 is used to store part of the billets, so that it is not easy to get out of the billet conveying roller 100. In the event of a malfunction in the steelmaking workshop, the billet conveying roller 100 is paralleled to transport billets to the steel rolling workshop through other steelmaking workshops, thereby ensuring the normal progress of the steel rolling process; in the event of a malfunction in the steel rolling workshop, the billet conveying roller 100 is decoupled to transport part of the billets to other steel rolling workshops, and the insulation pit 200 is used to store part of the billets, so that it is not easy to get blocked on the billet conveying roller 100. The billets are reasonably scheduled throughout the process, thereby improving the billet conveying efficiency.

[0088] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A method for scheduling steel billets, characterized in that: include: When the steelmaking speed of the steelmaking workshop is equal to the steel rolling speed of the steel rolling workshop, the steel billets are transported between the steelmaking workshop and the steel rolling workshop by using a steel billet conveying roller; When the steelmaking speed of the steelmaking workshop is higher than the steel rolling speed of the steel rolling workshop, the billets are decoupled on the billet conveying roller to convey the billets to multiple steel rolling workshops, or a portion of the billets are stored in the insulation pit; In case of a failure in the steelmaking workshop, the steel billets are transported in parallel on the billet conveying roller table to transport the steel billets to the steel rolling workshop through other steelmaking workshops; In case of a failure in a steel rolling production workshop, the billets are decoupled on the billet conveying roller table to convey part of the billets to other steel rolling production workshops, and part of the billets are stored in the insulation pit.

2. The method for scheduling steel billets according to claim 1, characterized in that: The steps of decoupling the steel billets on the steel billet conveying roller table to convey the steel billets to multiple steel rolling production workshops include: A plurality of sub-conveyor rollers are separated from the billet conveyor roller, and the billets are conveyed to a plurality of steel rolling production workshops using the sub-conveyor rollers.

3. The method for scheduling steel billets according to claim 1, characterized in that: A first collecting roller and a second collecting roller connected to each other are arranged on one side of the billet conveying roller, and the number of the insulation pits is multiple, and the multiple insulation pits are arranged on the side of the second collecting roller away from the billet conveying roller, and the multiple insulation pits are arranged in sequence along the direction in which the second collecting roller is away from the billet conveying roller; The steps of using a holding pit to store part of the billets include: Pushing the steel billet on the steel billet conveying roller table to the first collecting roller table by using a steel pusher; When the number of steel billets on the first collecting roller conveyor reaches a preset number, conveying the steel billets from the first collecting roller conveyor to the second collecting roller conveyor; The control unit is used to control the steel taking machine and the cover opening machine to move along the arrangement direction of the insulation pit on the track; During the movement of the steel taking machine and the cover opening machine, the cover opening machine is used to open the insulation cover on the top of any insulation pit, and then the steel taking machine is used to clamp the steel billet on the second collecting roller and place it in the insulation pit, and finally the cover opening machine is used to cover the insulation cover on the top of the insulation pit.

4. The steel billet scheduling method according to claim 3, characterized in that: A plurality of stop limiters are arranged on the track, and the positions of the plurality of stop limiters match the positions of the plurality of insulation pits. In the step of using a control unit to control the steel taking machine and the cover opening machine to move along the arrangement direction of the insulation pits on the track, when the steel taking machine or the cover opening machine passes through any of the stop limiters, the control unit is used to control the steel taking machine or the cover opening machine to stop moving.

5. The steel billet scheduling method according to claim 3, characterized in that: A rejecting mechanism is disposed on one side of the second collecting roller conveyor. After the step of conveying the steel billets from the first collecting roller conveyor to the second collecting roller conveyor, the rejecting mechanism is used to reject unqualified steel billets on the second collecting roller conveyor.

6. The method for scheduling steel billets according to claim 1, characterized in that: The steps of arranging the steel billet conveying rollers in parallel on the steel billet conveying rollers to convey the steel billets to the steel rolling production workshop through other steelmaking production workshops include: Other billet conveying rollers are incorporated into the billet conveying rollers to convey billets to the steel rolling production workshop via other steelmaking production workshops.

7. The steel billet scheduling method according to claim 1, characterized in that: The steps of carrying out unloading on the billet conveying roller to convey part of the billets to other steel rolling production workshops, and using the insulation pit to store part of the billets include: A plurality of sub-conveyor rollers are separated from the billet conveyor roller, and the billets on one of the sub-conveyor rollers are stored in a heat preservation pit, and the remaining sub-conveyor rollers are used to convey the billets to other steel rolling production workshops.

8. The steel billet scheduling method according to claim 1, characterized in that: The billet conveying roller table includes a converging roller table, a curved roller table, a climbing roller table and a furnace front roller table connected in sequence, the steel rolling production workshop includes a heating furnace and a rolling mill, and the billet scheduling method further includes: The merging roller, the curved roller, the climbing roller and the furnace front roller are used to transport steel billets between the steelmaking production workshop and the heating furnace, wherein the highest end of the climbing roller is at the same height as the entrance of the heating furnace.

9. The steel billet scheduling method according to claim 8, characterized in that: The converging roller conveyor comprises at least two rows of roller conveyors, the conveying rollers with odd numbers in each row of the roller conveyors are controlled by one control cabinet, and the conveying rollers with even numbers in each row of the roller conveyors are controlled by another control cabinet.

10. A steel billet production line, characterized in that: The billet scheduling method according to any one of claims 1 to 9 is applied, wherein the billet production line includes a steelmaking production workshop, a steel rolling production workshop, a billet conveying roller and an insulation pit, wherein the billet conveying roller is connected between the steelmaking production workshop and the steel rolling production workshop, and the insulation pit is arranged on one side of the billet conveying roller.

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