Post-shearing fault processing system and method for sheet billet continuous casting and rolling accident
Technical Field
The invention belongs to the technical field of hot-rolled strip steel sheet billet continuous casting and rolling, and relates to a sheet billet continuous casting and rolling accident post-shear fault processing system and method.
Background
Compared with the conventional hot-rolled strip steel production technology, the hot-rolled strip continuous casting and rolling technology has the advantages of energy conservation and emission reduction, particularly the thin-strip endless continuous casting and rolling technology represented by ESP (electronic stability program) is rapidly developed at home and abroad in nearly 10 years, and becomes an important selection path for green and intelligent hot rolling. The accident shears in the continuous casting and rolling process have the functions of shearing and continuously pushing out the waste materials when accidents occur in the downstream process, so that the upstream equipment is ensured to be continuously produced without being influenced by the downstream accidents, and the reduction of the production recovery time and the reduction of the heat supplementing cost of molten steel are facilitated.
The technical scheme of the existing fault treatment system after the accident shear is completed by adopting a swing type loop, a lifting roller way and a waste pushing device, and has the problems of large and complex mechanism and high investment cost; in addition, in order to ensure that the cut strip steels are stacked one on another, the lifting process of the lifting roller way needs to be accurately controlled, and faults are easy to occur.
Therefore, it is very necessary to develop a fault handling system after accident shearing for continuous casting and rolling of thin slabs, which can satisfy the fault handling function after accident shearing, simplify the structure, reduce the investment, and provide the reliability of the system.
Disclosure of Invention
In view of the above, the present invention provides a system and a method for handling fault after accidental shearing in continuous casting and rolling of thin slabs, wherein the system lifts a steel plate cut off by the accidental shearing off from a roller way through a cantilever type loop to provide a space for subsequent steel plate chopping operation, and a waste collecting device is arranged below the loop to collect the chopped steel plate, so as to ensure continuous production of equipment at the upstream of the accidental shearing without shutdown, simplify the structure of the equipment system, reduce investment, and improve the overall reliability of the equipment.
In order to achieve the purpose, the invention provides the following technical scheme:
on one hand, the invention provides a post-accident shear fault treatment system for sheet billet continuous casting and rolling, which comprises an accident shear, an inlet transmission roller way, a loop device and an outlet transmission roller way which are sequentially arranged along the transmission direction of a sheet billet, and further comprises a waste collection device positioned between the inlet transmission roller way and the outlet transmission roller way;
the loop device is of a cantilever structure, the structure comprises a heat insulation cover covering an inlet transmission roller way and an outlet transmission roller way, and a belt transmission carrier roller and a swing lifting device arranged on the heat insulation cover, the belt transmission carrier roller is installed on one side, close to the waste collecting device, of the heat insulation cover, the belt transmission carrier roller is located between the inlet transmission roller way and the outlet transmission roller way to form a sheet billet transmission roller way, the swing lifting device is located at one end, far away from the inlet transmission roller way, of the outlet transmission roller way, is connected with one end of the heat insulation cover, and is used for driving the heat insulation cover to wind the rotary shaft to swing and lift.
In some embodiments of the present disclosure, the swing lifting device includes a rotating shaft rotatably mounted on the driving rail and fixedly connected to the heat-insulating cover, and a swing hydraulic cylinder rotatably connected to the rotating shaft.
In some embodiments of the present disclosure, the swing hydraulic cylinder is connected to a rotating shaft through a connecting rod, one end of the connecting rod is fixedly connected to the rotating shaft, and the other end of the connecting rod is rotatably connected to the swing hydraulic cylinder.
In some embodiments of the present disclosure, the loop device further includes a pressing roller disposed on the heat-insulating cover, and the pressing roller is located on one side of the heat-insulating cover close to the waste collecting device.
In some embodiments of the disclosure, the pressing roller comprises a pressing mechanism, a hydraulic cylinder and a pressing roller, the middle of the pressing mechanism is rotatably connected to the heat-insulating cover, one end of the pressing mechanism is rotatably connected to the pressing roller, the other end of the pressing mechanism is connected to the hydraulic cylinder mounted on the heat-insulating cover, the hydraulic cylinder drives the pressing roller to press the sheet bar on the sheet bar conveying roller table through the pressing mechanism, the sheet bar is pressed through the pressing roller, the stability of the sheet bar in the operation process is kept, the effect of pressing the sheet bar in the process of lifting the cut sheet bar can also be achieved, and the stability of the sheet bar in the lifting process is guaranteed.
In some embodiments of the disclosure, one side of the outlet roller way, which is close to the inlet roller way, is provided with a buffer baffle plate matched with the waste collection device, so that the waste sheet billets can be buffered, and the phenomenon that the waste sheet billets are rebounded due to overlarge impact force or the waste sheet billets to damage equipment or cannot normally fall into the waste collection device is avoided.
In some embodiments of the present disclosure, the buffering baffle includes a baffle and a buffering device, one end of the baffle, which is far away from the waste collecting device, is hinged on the outlet roller way, and the other end of the baffle is connected on the outlet roller way through the buffering device.
In some embodiments of the present disclosure, the buffer device is one of a hydraulic buffer, a friction buffer, and a rubber buffer.
In some embodiments of the present disclosure, a side of the scrap collecting device away from the sheet bar conveying roller way is provided with a rail perpendicular to the sheet bar conveying roller way for movement of the scrap collecting device.
In another aspect. The invention also provides a fault treatment method after the sheet billet continuous casting and rolling accident shear, which adopts the fault treatment system after the sheet billet continuous casting and rolling accident shear, and comprises the following steps:
the method comprises the following steps: when the downstream process of the accident shears needs to be stopped, the continuously produced thin slabs are sheared through the accident shears;
step two: the loop device lifts the heat-insulating cover and a belt transmission carrier roller arranged on the heat-insulating cover under the action of the swinging and lifting device, and lifts the cut sheet billet from a sheet billet conveying roller bed under the action of the belt transmission carrier roller;
step three: the accident shears cut the continuously-transmitted upstream thin slabs into a piece of waste thin slab, and the waste thin slab is transferred forwards through an inlet transmission roller way and automatically falls into a waste collecting device;
step four: the loop device is restored to the initial position and production is continued.
In some embodiments of the present disclosure, the swing lifting device includes a rotating shaft and a swing hydraulic cylinder, the rotating shaft is rotatably mounted on the transmission rail and is fixedly connected with the heat-insulating cover, and the swing hydraulic cylinder is rotatably connected to the rotating shaft;
in the second step, the swing hydraulic cylinder is lifted to be matched with the rotating shaft, so that the function of the swing lifting device is realized, and the heat-insulating cover, and the belt transmission carrier roller and the pressing roller which are arranged on the heat-insulating cover are lifted.
The invention has the beneficial effects that:
1. the invention adopts the cantilever type loop device with the transmission carrier roller to lift the sheet billet cut by the accidental shear off the sheet billet transmission roller, provides space for the operation of the waste sheet billet cut by the subsequent accidental shear, and is arranged between the inlet transmission roller way and the outlet transmission roller way and below the transmission carrier roller for collecting the waste sheet billet, thereby ensuring that the equipment at the upstream of the accidental shear can continuously produce without stopping, simplifying the structure of the equipment system, reducing the investment, having simple and reliable working flow, realizing the continuous production of the system without accurate control and improving the integral reliability of the system.
2. According to the invention, the heat-insulating covers covering the inlet transmission roller way and the outlet transmission roller way are adopted, so that the passing thin slabs can be sealed and insulated during normal production, the heat loss is avoided, the thin slabs are compressed by the compression rollers, and the stability of the thin slabs in the operation process and the lifting process is kept.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a post-shearing fault handling system for a sheet bar continuous casting and rolling accident;
FIG. 2 is a schematic view of a loop assembly;
FIG. 3 is a schematic structural view of a pressure roller;
FIG. 4 is a schematic view of a partial structure of a post-shear fault handling system for a sheet bar continuous casting and rolling accident;
FIG. 5 is a schematic view of the working state of a fault handling system after shearing for accident of continuous casting and rolling of thin slabs;
fig. 6 is a schematic view 2 of the working state of a post-shearing fault handling system for a sheet bar continuous casting and rolling accident.
Reference numerals: 1-accident shear, 2-inlet transmission roller way, 3-loop device, 3.1-heat preservation cover, 3.2-pressing roller, 3.21-pressing mechanism, 3.22-hydraulic cylinder, 3.23-pressing roller, 3.3-belt transmission carrier roller, 3.4-swing hydraulic cylinder, 3.5-transmission roller way, 3.6-rotating shaft, 4-waste collecting device, 5-buffer baffle, 5.1-baffle, 5.2-buffer device and 6-outlet transmission roller way.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Example 1
Referring to fig. 1 to 4, a post-accident fault handling system for sheet billet continuous casting and rolling accident shears comprises an accident shear 1, an inlet transmission roller way 2, a loop device 3, a waste collection device 4, a buffer baffle 5 and an outlet transmission roller way 6, wherein the accident shear 1, the inlet transmission roller way 2, the loop device 3 and the outlet transmission roller way 6 are sequentially arranged along a transmission direction of a sheet billet, the waste collection device 4 is positioned between the inlet transmission roller way 2 and the outlet transmission roller way 6, the buffer baffle 5 is arranged at one end of the outlet transmission roller way 6 close to the inlet transmission roller way 2 and is matched with the waste collection device 4 to collect waste sheet billets chopped by the accident shear 1, the buffer baffle 5 comprises a baffle 5.1 and a buffer device 5.2, one end of the baffle 5.1 far away from the waste collection device 4 is hinged on the outlet transmission roller way 6, the other end is connected on the export rollgang 6 through buffer 5.2, buffer 5.2 is one of hydraulic buffer, friction formula buffer and rubber formula buffer for transport the discarded sheet bar of coming to entry rollgang 2, cushions, avoids the impact force too big, damage equipment to and avoid the sheet bar to bounce back, can't normally fall into in the garbage collection device 4.
The loop device 3 is of a cantilever type structure and comprises a heat insulation cover 3.1, a pressing roller 3.2, a belt transmission roller 3.3, a swing hydraulic cylinder 3.4, a transmission roller way 3.5 and a rotating shaft 3.6, wherein the heat insulation cover 3.1 covers the inlet transmission roller way 2 and the outlet transmission roller way 6, one end of the heat insulation cover 3.1, far away from the accident shear 1, is fixedly connected with the rotating shaft 3.6, the rotating shaft 3.6 is connected with the swing hydraulic cylinder 3.4, the swing lifting of the heat insulation cover 3.1 can be realized through the matching of the swing hydraulic cylinder 3.4 and the rotating shaft 3.6, namely the lifting of the belt transmission roller 3.3 is realized, and meanwhile, the sheet blank cut off by the accident shear 1 is lifted away from the sheet blank transmission roller way. The belt transmission carrier roller 3.3 is arranged on one side of the heat-insulating cover 3.1 close to the waste collecting device 4 and is positioned between the inlet transmission roller way 2 and the outlet transmission roller way 6 to form a thin slab transmission roller way for realizing the transmission of the thin slab.
The utility model discloses a heat preservation cover, including entry driving roller way 2, swing hydraulic cylinder 3.6, swing hydraulic cylinder 3.4, swing hydraulic cylinder 3.6, driving roller way 3.5 is located exit driving roller way 6 keeps away from the one end of entry driving roller way 2, with exit driving roller way 6 cooperatees, revolving shaft 3.6 is installed the driving track 3.5 is kept away from the one end of entry driving roller way 2, link to each other through the connecting rod between swing hydraulic cylinder 3.4 and the revolving shaft 3.6, connecting rod one end with revolving shaft 3.6 fixed connection, the other end with swing hydraulic cylinder 3.4 rotates and is connected, swing hydraulic cylinder 3.4 passes through the connecting rod drive revolving shaft 3.6 is in order to drive heat preservation cover 3.1 winds revolving shaft 3.6 swing lifting.
The pressing roller 3.2 is installed on one side of the heat-insulating cover 3.1 close to the scrap collecting device 4 and is used for pressing the sheet billet on the sheet billet conveying roller way, the pressing roller 3.2 comprises a pressing mechanism 3.21, a hydraulic cylinder 3.22 and a pressing roller 3.23, the middle part of the pressing mechanism 3.21 is rotatably connected to the heat-insulating cover 3.1, one end of the pressing mechanism is rotatably connected to the pressing roller 3.23, the other end of the pressing mechanism is connected to the hydraulic cylinder 3.22 installed on the heat-insulating cover 3.1, the hydraulic cylinder 3.22 drives the pressing roller 3.23 to press the sheet billet on the sheet billet conveying roller way through the pressing mechanism 3.21, and the hydraulic cylinder 3.22 is a piston type hydraulic cylinder.
And a track perpendicular to the thin slab conveying roller way is arranged on one side, away from the thin slab conveying roller way, of the waste collection device 4 and is used for moving the waste collection device 4.
Specifically, the inlet transmission roller table 2 adopts a structure that two transmission rollers share a base in structure and is arranged at an outlet of the accident shear 1. The automatic sheet billet lifting mechanism is used for continuously cutting a steel plate by the emergency shears 1, forwards conveying the continuously cut steel plate and enabling the continuously cut steel plate to fall into the waste collecting device 4, so that interference between a subsequent steel plate and the cut steel plate is avoided, a steel piling phenomenon is formed, the loop device 3 is integrally in a cantilever lifting structure and is mainly used for lifting a tail of a sheet billet belt after the emergency shears 1 cut off continuous sheet billets, a channel is reserved for passage of the subsequent sheet billets, a space is reserved for the cut sheet billets to fall into the waste collecting device 4, the heat insulation cover 3.1 is used for sealing and insulating the passing sheet billets during normal production so as to avoid heat loss, the pressing roller 3.2 is used for pressing the sheet billets during normal production, so that the stability of the sheet billets during operation is kept, the effect of pressing the sheet billets can be achieved during the process of lifting the cut sheet billets, the stability of the sheet billets during the lifting process of the sheet billets is guaranteed, and the outlet transmission roller table 6 adopts a structure mode that two transmission rollers share a base, the rear part of the belt transmission carrier roller 3.3 is used for providing support for the passing of the thin slab during normal production and providing mounting support for the buffer baffle 5.
According to the fault treatment system after the sheet billet continuous casting and rolling accident shear, the cantilever type loop device 3.3 with the transmission carrier roller 3.3 is driven by hydraulic pressure, the sheet billet cut by the accident shear 1 is lifted away from a sheet billet transmission roller way, space is provided for the subsequent operation of cutting the sheet billet, and a waste material collecting device 4 is arranged between the inlet transmission roller way 2 and the outlet transmission roller way 6 and below the transmission carrier roller 3.3 and used for collecting the waste sheet billet, so that the continuous production of upstream equipment of the accident shear can be ensured without stopping; the structure of the equipment system is simplified, the investment is reduced, and the overall reliability of the equipment is improved.
Example 2
Please refer to fig. 5 to 6, which illustrate two working states of the post-shearing fault handling system for the sheet bar continuous casting and rolling accident provided in embodiment 1, wherein fig. 5 illustrates a working state during normal production, and fig. 6 illustrates a working state during fault handling; the working flow of the system is as follows:
the method comprises the following steps: when the downstream process of the accident shears 1 has an accident and needs to be stopped, the continuously produced thin slabs are cut off by the accident shears 1;
step two: the swing hydraulic cylinder 3.4 is lifted to be matched with the rotating shaft 3.6, the heat-insulating cover 3.1 and the belt transmission carrier roller 3.3 arranged on the heat-insulating cover 3.1 are lifted, and the cut sheet billet is lifted away from the sheet billet conveying roller way under the action of the belt transmission carrier roller 3.3 and the pressing roller 3.2;
step three: the accident shear 1 cuts the continuously advancing upstream thin slab conveying roller way into a piece of waste thin slab, and forwards transfers the waste thin slab through the inlet conveying roller way 2, and the waste thin slab automatically falls into a waste collecting device 4;
step four: after the downstream process finishes processing the equipment failure, the loop device 3 is recovered to the initial position to continue production.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.