CN114951311A - Conveying system and conveying method for crescent steel billets - Google Patents

Abstract

The invention belongs to the technical field of crescent billet conveying, and particularly relates to a conveying system and a conveying method of crescent billets, wherein the conveying system comprises: a plurality of furnace entering roller ways; the steel billet conveying device comprises a rack and a conveying device, wherein the rack comprises a plurality of main beams and paired concave guide plates, the main beams are respectively positioned outside two sides of a plurality of furnace entering roller ways in the vertical direction, and the paired concave guide plates are positioned above the furnace entering roller ways and are arranged in the front-back direction along the conveying direction of a steel billet; the two sliding rails are respectively positioned outside two sides of the plurality of furnace entering roller ways in the vertical direction and extend along the vertical direction of the plurality of furnace entering roller ways; the side surface of the sliding rail is provided with a sliding chute which is opened outwards; the pulleys are embedded in the sliding grooves and extend outwards to be connected to the lower end of the main beam; and the driving device is connected with the extending end of the pulley and is fixed on the main beam. The invention can prevent the side turning of the crescent billet and synchronously and stably convey the crescent billet.

Description

Conveying system and conveying method for crescent-shaped steel billets

Technical Field

The invention belongs to the technical field of crescent billet conveying, and particularly relates to a conveying system and a conveying method of crescent billets.

Background

In the existing steel production workshop, after the 800-plus-900 ℃ red steel comes out from the steel making process, if the low-temperature steel is sent to the steel rolling workshop, the steel billet is turned over on a steel making cold bed, cooled and prevented from deforming, and is intensively placed after being cooled and then is operated when needed. However, no matter how controlled, the upper and lower processes have irresistible asynchronism, such as steel-making equipment failure or steel-rolling workshop equipment failure, the speed of digesting the steel billet in a steel-rolling workshop is not matched with the speed of the steel billet in a steel-making workshop, and the like, if the high-temperature steel billet cannot be immediately rolled, the steel billet can be cooled at two ends of the steel billet by the cold shrinkage principle, so that the two ends of the steel billet are bent at a large angle to form a crescent steel billet which is also a side-bent crescent steel billet.

In summary, the disadvantages of the prior art are:

one is as follows: the radian of the bent steel billet which becomes crescent after cold contraction is also different, the maximum width can be bent to 500mm, the roller surface of the roller way which is originally designed can not convey the steel billet which becomes crescent into the heating furnace, even if the steel billet is inverted into the crescent blank which is bent upwards, the possibility of tipping exists in the conveying process, and the steel billet is extremely easy to tip particularly when the steel billet moves transversely from the cantilever roller of the heating furnace to the fixed beam of the heating furnace;

the second step is as follows: the existing processing mode of the crescent steel billet with larger curvature is to reload the steel billet and send the steel billet to a splitting area, perform segmentation splitting on the deformed steel billet, then transfer the steel billet to steelmaking and return the steel billet again, although the operation method effectively processes the deformed steel billet, the cost is extremely high;

and the third step: enterprises can purchase large-scale correction equipment for the problem, but the large-scale correction equipment needs to be invested in a large amount of cost, a large field is also needed, a plurality of operation steps for transferring exist, and the optimal treatment method is not provided.

In summary, there is a need in the art for an invention that can digest a crescent or crescent billet with a small investment, and can be adapted to a field to prevent the billet from tipping or even correct the billet.

Disclosure of Invention

The invention aims to overcome the defect that the crescent steel billets are easy to turn over in the conveying process in the prior art, and provides a conveying system and a conveying method for the crescent steel billets.

In order to achieve the above object, in a first aspect, the present invention provides a conveying system for a crescent-shaped steel billet, comprising:

the plurality of furnace entering roller ways are positioned outside the furnace door of the heating furnace and are arranged in parallel;

the steel billet conveying device comprises a rack and a conveying mechanism, wherein the rack comprises a plurality of main beams and paired concave guide plates, the main beams are respectively positioned outside two sides of a plurality of furnace entering roller ways in the vertical direction, and the paired concave guide plates are positioned above the furnace entering roller ways and are arranged in the front and back direction of a steel billet conveying direction and used for limiting two ends of a tooth-shaped steel billet and synchronously guiding and conveying the steel billet to prevent the steel billet from tipping;

the two sliding rails are respectively positioned outside two sides of the furnace entering roller ways in the vertical direction and extend along the vertical direction of the furnace entering roller ways; the side surface of the sliding rail is provided with a sliding chute which is opened outwards;

the pulleys are embedded in the sliding grooves and extend outwards to be connected to the lower end of the main beam;

and the driving device is connected with the extending end of the pulley and fixed on the main beam, and is used for driving the pulley to move in the sliding rail and simultaneously driving the rack to synchronously move along with the conveying of the furnace entering roller way.

In some preferred embodiments, the delivery system further comprises: and the pressing mechanism is arranged on the rack, is positioned above the concave guide plate and is used for being matched with the furnace entering roller way to straighten or limit the billet in the concave guide plate.

More preferably, the conveying system further comprises: and the temperature measuring instrument is arranged on any concave guide plate and is used for measuring the temperature of the steel billet so as to judge that the pressing mechanism carries out straightening operation or limiting operation.

More preferably, the pressing mechanisms correspond to the concave guide plates one by one; and the pressing mechanism comprises a lifting rod and a pressing plate connected to the lower end of the lifting rod, the lifting rod is installed on the rack, and the pressing plate is horizontally arranged.

In some preferred embodiments, the delivery system further comprises: and the proximity switches are at least two and are respectively arranged at the front end and the rear end of the furnace entering roller way and used for sensing whether the main beam reaches a corresponding position or not so as to control the stop or the movement of the rack.

Preferably, the driving device is a plurality of driving devices, and the driving devices correspond to the pulleys one by one.

Preferably, the inlet end of the concave guide plate is a bell mouth.

Preferably, the concave guide plate is positioned at the center of the conveying surface of the furnace entering roller way.

In some preferred embodiments, the delivery system further comprises:

one end of the connecting shaft is connected to the outer end of the pulley, and the other end of the connecting shaft penetrates through the corresponding main beam on the same side and extends outwards and is connected with the driving device;

the bearing assembly is used for rotatably connecting the connecting shaft to the main beam corresponding to the same side;

and the coupling is arranged at the other end of the connecting shaft and is connected with the driving device.

In some preferred embodiments, the delivery system further comprises:

the cantilever roller is positioned in the heating furnace, the outer end of the cantilever roller is provided with a baffle plate extending in the vertical direction, and the height of the inner end of the cantilever roller is flush with the height of a fixed beam of the heating furnace in the heating furnace;

and the pusher is positioned outside the heating furnace, is arranged outside the outer end of the cantilever roller and is used for pushing the steel billet positioned on the cantilever roller onto a fixed beam of the heating furnace so as to fully heat the middle part of the heating furnace.

More preferably, the roller surface of the cantilever roller is inclined downward toward the baffle plate at an angle of 3-7 ° for inducing the billet to move toward the outer end of the cantilever roller to prevent the billet from tipping over.

More preferably, the height of the upper end of the baffle plate is lower than one half of the height of the steel billet on the cantilever roller;

more preferably, the pusher comprises a push rod, the outer end of the push rod is inclined downwards towards the direction close to the baffle plate, and the inclination angle is 10-15 degrees, so that the billet is prevented from tipping when the steel is pushed so as to stably push the billet onto the fixed beam of the heating furnace.

Preferably, an arc angle is arranged at the end part of the fixed beam of the heating furnace close to the steel pushing direction, so that the blocking resistance of the transverse movement of the billet is eliminated.

In a second aspect, the present invention provides a method for conveying a crescent-shaped steel billet, which uses the conveying system of the first aspect, and the method comprises the following steps:

a: lifting the crescent-shaped steel billet bent upwards to the furnace entering roller way when the furnace entering roller way stops running;

b: and simultaneously starting the driving device and the furnace entering roller way to drive the pulley to move on the slide rail, wherein the pulley drives the main beam and the rack to move, and the steel billet is gradually clamped between the paired concave guide plates in the moving process, so that the concave guide plates carry out limiting guide on the steel billet and are matched with the furnace entering roller way to carry out synchronous conveying along with the process of conveying the steel billet by the furnace entering roller way so as to prevent the steel billet from turning on one side and further conveying the steel billet into the heating furnace.

Preferably, step b further comprises: the driving device controls the frame to stop or move through whether the main beam reaches the target position of the set proximity switch.

In some preferred embodiments, in step b, after the steel billet is clamped between the pair of concave guide plates, the method further comprises:

b 1: for steel billets above the target temperature, simultaneously closing the driving device and the furnace entering roller way to stop moving, then simultaneously pressing down two ends of the steel billets through the pressing-down mechanism, and matching the upper surface of the furnace entering roller way as a stress surface, thereby realizing the rapid alignment of the steel billets on the furnace entering roller way, and after the alignment is finished, the pressing-down mechanism retracts to enable the steel billets and the furnace entering roller way to form an unstressed state; starting the driving device and the furnace entering roller way to move so as to convey the steel billet into the heating furnace;

b 2: for the steel billet with the temperature lower than the target temperature, the driving device and the furnace entering roller way are closed simultaneously to stop moving, and then the steel billet is pressed down by the pressing-down mechanism until the shortest vertical distance of the steel billet is less than 20mm, so that the phenomenon that the steel billet jumps violently due to a large amount of swing at two ends of the steel billet in the conveying process of the furnace entering roller way is inhibited; and starting the driving device and the furnace entering roller way to move so as to convey the steel billet into the heating furnace.

In some preferred embodiments, the delivery method further comprises:

c: after the steel billet enters the heating furnace, the inclined surface of the cantilever roller induces the steel billet to move towards one side of the flange of the cantilever roller, so that the production accident caused by the steel billet turning over on the upper side of the cantilever roller is prevented;

d: after the cantilever roller stops, the pusher pushes the billet steel to transversely push the fixed beam of the heating furnace.

According to the technical scheme, particularly, the movable concave guide plate is arranged, so that the crescent billet cannot roll over due to abnormal jumping in the conveying process of the furnace roller way, and the whole-course protection is realized; and, the cooperation of slide rail and pulley has not only improved rectilinear movement's stability, can also effectively eliminate the unusual bounce that crescent steel billet appears, and the pulley is fixed and can effectually prevent that the pulley from leading to the derail because of external acting force outside the slide rail, and the steel billet that makes the card go into concave baffle is more stable high-efficient in the roller way transportation process of entering the stove, has removed the operation personnel from and has carried while, trails, still will adjust the roller way rotational speed according to the site conditions speed, avoids the condition that the steel billet tumbled.

In a word, the invention can realize that the crescent billet cannot turn over during the conveying of the steel billet in the furnace roller way, and can ensure the straightness in the conveying process, thereby being more stably and efficiently conveyed into the heating furnace. Simultaneously, the method also has the following advantages:

one is as follows: the crescent steel billet is processed without cutting and returning to a furnace for remelting and pouring to form a new steel billet, so that the cost of an enterprise is reduced to the greatest extent without increasing large cost, particularly, the energy-saving and environment-friendly effects are achieved, and the production strength of a steelmaking process is effectively reduced;

the second step is as follows: by adopting the conveying system with the optimized proximity switch, the intelligence for conveying the crescent-shaped steel billet can be improved, the problem that an operator needs to stare at the site to adjust the rotating speed of the roller table all the time during conveying the crescent-shaped steel billet is solved, and the universality and the application area are improved;

and thirdly: the invention can directly straighten the crescent billet, and has diversified functions.

In the scheme of the invention for optimizing the pusher and the cantilever roller with specific structures, the technical problem that the crescent billet enters the heating furnace to tip can be effectively solved, such as the technical problems that the billet turns over on the cantilever roller, the billet turns over on the cantilever roller when moving to the fixed beam of the heating furnace, and the like. The cantilever roller is arranged at an inclination angle, so that the steel billet can be induced to move towards the direction of the baffle plate arranged on the cantilever roller, and the steel billet can be guided, and can not be tipped even if abnormal jumping occurs, so that the requirement on conveying the straight billet can be met, and the conveying stability of the crescent steel billet on the cantilever roller can be guaranteed; the inclination angle setting of pusher push rod can do benefit to the inductivity and let the steel billet in lateral shifting, to the slope of push rod direction, combines the effort of push rod propelling movement, and the steel billet can not tumble, has restrained the steel billet and has tumbled in the opposite direction, and is steady push away the steel billet on the heating furnace fixed beam to there is the possibility of beating when having avoided the front end to carry.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of a portion of the conveying system of the present invention outside the heating furnace.

Fig. 2 is a schematic structural diagram of the slide rail, the pulley and the driving device in fig. 1.

Fig. 3 is a schematic structural view of a bell mouth of the concave guide plate.

FIG. 4 is a schematic view of the structure of the portion of the conveyor system of the present invention within a furnace.

Fig. 5 is a right side view of a portion of fig. 4.

Description of the reference numerals

1-cantilever roller, 2-heating furnace moving beam, 3-heating furnace fixed beam, 4-heating furnace, 5-baffle, 6-pusher, 7-billet, 8-screw-down mechanism, 9-slide rail, 10-pulley, 11-main beam, 12-plane plate, 13-concave guide plate, 14-connecting shaft, 15-driving device, 16-coupler, 17-bearing assembly, 18-furnace roller way, 19-driving device base and 20-approach switch; 801-lifting rod, 802-pressing plate; 1301-bell mouth.

Detailed Description

In the present invention, the use of directional terms such as "upper, lower, left, right" in the absence of a contrary intention is generally understood in conjunction with the orientation shown in the drawings and the practice, and "inner and outer" refer to the inner and outer of the profile of the component. "front" means the sliding direction of the billet, and vice versa.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.

In a first aspect, the present invention provides a conveying system for a crescent-shaped steel billet, as shown in fig. 1 and fig. 2, comprising:

a plurality of furnace entering roller ways 18 which are positioned outside the furnace door of the heating furnace 4 and arranged in parallel and used for conveying the steel billet 7;

the steel billet conveying device comprises a rack, a plurality of guide plates and a plurality of guide plates, wherein the rack comprises a plurality of main beams 11 and paired concave guide plates 13, the main beams 11 are respectively positioned outside two sides of a plurality of furnace entering roller ways 18 in the vertical direction, and the paired concave guide plates 13 are positioned above the furnace entering roller ways 18 and are arranged in the front and back direction along the conveying direction of a steel billet 7 and used for limiting two ends of a tooth-shaped steel billet 7 and synchronously guiding and conveying the steel billet to prevent the steel billet from tipping;

the two sliding rails 9 are respectively positioned outside two sides of the furnace entering roller ways 18 in the vertical direction and extend along the vertical direction of the furnace entering roller ways 18; a sliding groove with an outward opening is formed in the side surface of the sliding rail 9;

a plurality of pulleys 10 embedded in the sliding grooves and extending outwards to be connected to the lower end of the main beam 11;

and the driving device 15 is connected with the extending end of the pulley 10 and fixed on the main beam 11, and is used for driving the pulley 10 to move in the sliding rail 9 and simultaneously driving the rack to synchronously move along with the conveying of the furnace entering roller way 18.

In the invention, a person skilled in the art can design the specific structure of the rack according to requirements as long as the corresponding function can be realized. Preferably, the rack further comprises a plane plate 12, the plane plate 12 is located above the plurality of furnace-entering roller ways 18, and the plurality of main beams 11 and the pair of concave guide plates 13 are both mounted on the plane plate 12. Preferably, four main beams 11 are arranged at the corresponding four corners of the plane plate 12, and four pulleys 10 are arranged and correspond to the main beams 11 one by one. It will be appreciated that the female guide plate 13 opens upwards and is fixed to the two ends of the flat plate 12, with a female portion for the insertion of the billet 7.

Preferably, the length of the plane plate 12 is greater than or equal to that of the crescent-shaped steel billet 7, which is more beneficial to realizing the covering of the steel billet 7, thereby more stably guiding or assisting the steel billet 7.

Preferably, the driving device 15 is plural and corresponds to the pulleys 10 one by one. It will be appreciated that the drive means 15 are symmetrically arranged on both sides of the frame.

The driving device 15 is preferably installed on the main beam 11 through the driving device base 19, so that the driving device 15 can stably move synchronously along with the main beam 11 driven by the pulley 10, and meanwhile, the speed difference value can be further reduced, and the control stability is improved.

Preferably, as shown in fig. 3, the inlet end of the concave guide plate 13 is a bell mouth 1301. According to the preferred scheme, the concave guide plate 13 can automatically guide the billet 7 to enter the concave guide plate 13 through the bell mouth 1301, an operator does not need to adjust and center, and auxiliary equipment does not need to be added to butt the billet 7 and the concave guide plate 13.

Preferably, the concave guide plate 13 is higher than the roll surface of the charging table 18 by more than 50mm, and the plane plate 12 of the stand is higher than the roll surface of the charging table 18 by more than 700 mm; the thickness of the concave guide plate 13 is more than 20 mm.

Preferably, the concave guide plate 13 is located at the center of the conveying surface of the furnace run-in table 18. It should be understood that only one billet 7 is delivered at a time, and if two billets 7 are jammed.

The gap between the pulley 10 and the side of the sliding rail 9 can be selected by those skilled in the art according to the requirement. According to the invention, preferably, the gap between the pulley 10 and the side surface of the slide rail 9 in the vertical direction is more than or equal to 1mm, so that the pulley 10 can smoothly move along the slide rail 9 outside the slide rail 9, and the large-amplitude jumping of the steel billet 7 can be limited.

In the present invention, the length of the slide rail 9 is at least the same as the length of the plurality of furnace-entering roller ways 18 arranged in parallel in the vertical direction, specifically, the length may be the same, and of course, as shown in fig. 1, the length of the slide rail 9 is longer.

In some preferred embodiments, as shown in fig. 1, the delivery system further comprises: and the pressing mechanism 8 is arranged on the rack and positioned above the concave guide plate 13 and is used for being matched with the furnace feeding roller way 18 to straighten or limit the billet 7 in the concave guide plate 13. This preferred scheme can realize carrying out quick correction to crooked crescent steel billet 7, can realize steady spacing transport again.

More preferably, the pressing mechanisms 8 correspond to the concave guide plates 13 one to one.

More preferably, the pressing mechanism 8 comprises a lifting rod 801 and a pressing plate 802 connected to the lower end of the lifting rod 801, the lifting rod 801 is mounted on the machine frame, and the pressing plate 802 is horizontally arranged. The lifting rod 801 can be selected from hydraulic oil cylinders, worm gears and other devices with large output capacity.

By adopting the above technical scheme of preferably arranging the screw-down mechanism 8, the straightening function of the high-temperature billet 7 can be realized, for example, in a specific embodiment, when the temperature of the billet 7 is above a target temperature (e.g. 650 °), the screw-down mechanism 8 simultaneously presses down the front and rear sides of the billet 7, the pressing plate 802 contacts the billet 7 with the two sides bent upwards, the roll surface of the furnace-entering roller way 18 is used as a stress surface, the screw-down mechanism 8 is a straightening surface, the billet 7 is quickly straightened on the roll surface of the furnace-entering roller way 18, after the straightening is finished, the screw-down mechanism 7 retracts to more than 20mm, the billet 7 and the furnace-entering roller way 18 are in an unstressed state, and the furnace-entering roller way 18 and the driving device 15 are started to convey the billet 7 into the heating furnace 4; for the steel billet with the target temperature (for example 650 ℃) or lower, the pressing mechanism 8 drives the pressing plate 802 to press down until the shortest vertical distance between the pressing plate and the steel billet 7 is less than 20mm, so that the phenomenon that the steel billet 7 jumps violently due to a large amount of swinging of two ends of the steel billet 7 in the conveying process of the steel billet 7 in the furnace roller way 18 can be prevented.

More preferably, the conveying system further comprises: and the temperature measuring instrument (not shown in the figure) is arranged on any one of the concave guide plates 13 and is used for measuring the temperature of the steel billet 7 so as to judge whether the temperature of the steel billet 7 is in a target temperature range or not, and thus the pressing mechanism 8 is controlled to perform straightening operation or limiting operation.

In some preferred embodiments, the delivery system further comprises: and at least two proximity switches 20 are respectively arranged at the front end and the rear end of the furnace entering roller way 18 and are used for sensing whether the main beam 11 reaches a corresponding position or not so as to control the stop or the movement of the rack. This preferred solution is further advantageous in that the automatic control capability is increased, and the starting or closing or moving speed of the driving means 15 is controlled according to the position of the frame.

In some preferred embodiments, as shown in fig. 2, the delivery system further comprises:

one end of the connecting shaft 14 is connected (preferably connected by an interference fit key) to the outer end of the pulley 10, and the other end of the connecting shaft passes through the corresponding main beam 11 on the same side and extends outwards and is connected with the driving device 15;

the bearing assembly 17 is used for rotatably connecting the connecting shaft 14 to the main beam 11 corresponding to the same side;

and a coupling 16 mounted on the other end of the connecting shaft 14 and connected to the driving device 15. By adopting the technical scheme, the function of stable movement can be realized, and the service life of the equipment is prolonged.

The bearing assembly 17 comprises a bearing and a bearing seat, the bearing is sleeved outside the connecting shaft 14 and connected to the bearing seat, the bearing seat is preferably in key joint with the connecting shaft 14, the bearing seat is installed on the main beam 11, and the pulley 10 is stably fixed on the outer side of the sliding rail 9 through the assembly of the connecting shaft 14 and the bearing assembly 17.

In some preferred embodiments, as shown in fig. 4 and 5, the delivery system further comprises:

the cantilever roller 1 is positioned in the heating furnace 4, the outer end of the cantilever roller is provided with a baffle 5 extending in the vertical direction, and the height of the inner end of the cantilever roller is flush with that of a fixed beam 3 of the heating furnace in the heating furnace 4;

and the pusher 6 is positioned outside the heating furnace 4 and arranged outside the outer end of the cantilever roller 1 and is used for pushing the billet 7 positioned on the cantilever roller 1 onto the fixed beam 3 of the heating furnace so as to fully heat the middle part of the heating furnace 4.

It will be appreciated that the cantilever roll 1 is mounted at a height (i.e. the transport plane) corresponding to the run-in table 18, so that the run-in table 18 transports the steel slab 7 onto the cantilever roll 1.

More preferably, the roll surface of the cantilever roll 1 is inclined downwardly towards the baffle 5 at an angle of 3-7 ° for inducing the billet 7 to move towards the outer end of the cantilever roll 1 to prevent it from tipping over. Under this preferred scheme, inclination can induce steel billet 7 to the cantilever roller 1 is equipped with the direction removal of baffle 5 to leading steel billet 7, even if appear unusually beating, also can not topple over, can not only satisfy the transport of straight square billet, can also keep the transport stability of crescent steel billet 7 on cantilever roller 1.

More preferably, the height of the upper end of the baffle 5 is lower than half the height of the steel blank 7 on the cantilever roller 1. Under the preferable scheme, the steel pusher 6 is more beneficial to be contacted with the steel billet 7 below the central point of the steel billet 7, so that the steel billet 7 is stably inclined on the steel pusher 6 and is prevented from turning forwards.

More preferably, the pusher 6 comprises a push rod, the outer end of which is inclined downwards towards the direction close to the baffle 5, and the inclination angle is 10-15 degrees, so that the billet 7 can be prevented from tipping when the steel is pushed to stably push the billet onto the fixed beam 3 of the heating furnace. Under the preferred scheme, the proper inclination angle can be beneficial to inducing the billet 7 to incline towards the push rod direction in the transverse movement, and the billet 7 can not tip over by combining the acting force pushed by the push rod, so that the billet 7 is prevented from tipping in the opposite direction, and the billet 7 is stably pushed onto the fixed beam 3 of the heating furnace, thereby avoiding the possibility of jumping during the front end conveying.

Preferably, the end part of the fixed beam 3 of the heating furnace close to the steel pushing direction is provided with an arc angle so as to eliminate the blocking of the transverse movement of the billet 7.

In a second aspect, the present invention provides a method for conveying a crescent-shaped steel billet, which uses the conveying system of the first aspect, and the method comprises the following steps:

a: in the state that the furnace entering roller way 18 stops running, the crescent-shaped steel billet 7 which is bent upwards is hoisted to the furnace entering roller way 18;

b: and simultaneously starting the driving device 15 and the furnace entering roller way 18, driving the pulley 10 to move on the slide rail 9, driving the main beam 11 and the rack to move by the pulley 10, gradually clamping the steel billet 7 between the paired concave guide plates 13 in the moving process, so that in the process of conveying the steel billet 7 along with the furnace entering roller way 18, the concave guide plates 13 perform limiting guide on the steel billet 7 and are matched with the furnace entering roller way 18 to perform synchronous conveying so as to prevent the steel billet 7 from turning laterally, and then the steel billet is conveyed into the heating furnace 4.

It can be understood that the output rotation speed of the driving device 15 is consistent with the rotation speed of the furnace roller way 18 and the conveying speed of the steel billet 7.

Preferably, the pulley 10 is moved on the slide rail 9 by a coupling 16.

Preferably, the billet 7 is guided by the bell mouth 1301 of the female guide plate 13 to enter the female guide plate 13 quickly and accurately. This preferred embodiment ensures that the female guide 13 can be smoothly engaged with the billet 7 even if the center line of the female guide 13 does not coincide with the billet 7 bent upward.

Preferably, step b further comprises: the frame is controlled to stop or move by the driving device 15 by whether the main beam 11 reaches the target position of the set proximity switch 20. For example, after the main beam moves to the proximity switch 20 located at the rear end of the furnace run-in table 18, the driving device 15 stops moving.

The furnace entry roller way 18 and the driving device 15 are started synchronously, the billet 7 can not turn on one side in the conveying process of the furnace entry roller way 18 under the assistance of the concave guide plate 13, the auxiliary device consisting of the rack and the like can move simultaneously with the billet 7, and after the rack moves to the next proximity switch 20 positioned at the front end, the driving device 15 stops moving, so that the billet 7 is smoothly conveyed into the heating furnace.

In some preferred embodiments, in step b, after the steel blank 7 is clamped between the pair of concave guide plates 13, the method further comprises:

b 1: for the steel billet 7 with the temperature higher than the target temperature, simultaneously closing the driving device 15 and the furnace entering roller way 18 to stop moving, then simultaneously pressing down the two ends of the steel billet 7 through the pressing-down mechanism 8, and matching the upper surface of the furnace entering roller way 18 as a stress surface, thereby realizing the rapid alignment of the steel billet 7 on the furnace entering roller way 18, after the alignment is finished, retracting the pressing-down mechanism 8 to ensure that the steel billet 7 and the furnace entering roller way 18 form an unstressed state (preferably, retracting the shortest vertical distance of the steel billet 7 is more than 20 mm); starting the driving device 15 and the furnace roller way 18 to move so as to convey the billet 7 into the heating furnace 4;

b 2: for the steel billet 7 with the temperature lower than the target temperature, the driving device 15 and the furnace entering roller way 18 are closed at the same time to stop moving, and then the steel billet 7 is pressed down by the pressing mechanism 8, so that the shortest vertical distance of the steel billet 7 is less than 20mm, and the phenomenon that the two ends of the steel billet 7 greatly swing to cause severe jumping in the conveying process of the steel billet 7 in the furnace entering roller way 18 is inhibited; the driving device 15 and the furnace-entering roller table 18 are started to move, thereby conveying the billet 7 into the heating furnace 4.

The target temperature may be selected by one skilled in the art as desired, and may be, for example, 650 ℃.

In some preferred embodiments, the delivery method further comprises:

c: after the steel billet 7 enters the heating furnace 4, the inclined surface of the cantilever roller 1 induces the steel billet 7 to move towards one side of the flange 5 of the cantilever roller 1, so that production accidents caused by the fact that the steel billet 7 turns over on the cantilever roller 1 are prevented, and particularly the steel billet 7 turns over to collide with the heating furnace movable beam 2 or the heating furnace fixed beam 3, and the consequences cannot be estimated;

d: after the cantilever roller 1 stops, the pusher 6 stably pushes the billet 7 to transversely push the fixed beam 3 of the heating furnace.

In order to prevent the billet 7 from tipping in the process of pushing the billet 7 onto the fixed beam 3 of the heating furnace, the billet 7 can be induced to incline towards the push rod direction in the transverse movement by combining the angle of the push rod, the billet 7 cannot tip by combining the pushing acting force of the push rod, the opposite tipping of the billet 7 is prevented, the billet 7 is pushed onto the fixed beam 3 of the heating furnace by smooth pushing, and the smooth conveying of the bouncing front end is completed.

The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention, including combinations of various technical features in any other suitable way, and these simple modifications and combinations should also be regarded as the disclosure of the invention, and all fall within the scope of the invention.

Claims (10)

1. A conveying system for crescent-shaped billets, comprising:

a plurality of furnace entering roller ways (18) which are positioned outside the furnace door of the heating furnace (4) and are arranged in parallel;

the steel billet conveying device comprises a rack, a plurality of guide rails (11) and paired concave guide plates (13), wherein the main rails (11) are respectively positioned outside two sides of a plurality of furnace entering roller ways (18) in the vertical direction, and the paired concave guide plates (13) are positioned above the furnace entering roller ways (18) and are arranged in the front-back direction along the conveying direction of a steel billet (7) and used for limiting two ends of a tooth-shaped steel billet (7) and synchronously guiding and conveying the steel billet to prevent the steel billet from tipping;

the two sliding rails (9) are respectively positioned outside two sides of the furnace entering roller ways (18) in the vertical direction and extend along the vertical direction of the furnace entering roller ways (18); a sliding groove with an outward opening is formed in the side surface of the sliding rail (9);

the pulleys (10) are embedded in the sliding grooves and extend outwards to be connected to the lower end of the main beam (11);

and the driving device (15) is connected with the extending end of the pulley (10) and fixed on the main beam (11) and is used for driving the pulley (10) to move in the sliding rail (9) and simultaneously driving the rack to synchronously move along with the conveying of the furnace entering roller way (18).

2. The delivery system of claim 1, further comprising:

the pressing mechanism (8) is arranged on the rack, is positioned above the concave guide plate (13), and is used for being matched with the furnace feeding roller way (18) to straighten or limit the billet (7) in the concave guide plate (13);

and the optional temperature measuring instrument is arranged on any concave guide plate (13) and is used for measuring the temperature of the steel billet (7) so as to judge that the pressing mechanism (8) performs straightening operation or limiting operation.

3. The conveying system according to claim 2, characterized in that the depressing mechanisms (8) correspond one-to-one to the concave guide plates (13); the pressing mechanism (8) comprises a lifting rod (801) and a pressing plate (802) connected to the lower end of the lifting rod (801), the lifting rod (801) is installed on the rack, and the pressing plate (802) is horizontally arranged.

4. The delivery system of claim 1,

the delivery system further comprises: the proximity switches (20) are at least two and are respectively arranged at the front end and the rear end of the furnace entering roller way (18) and used for sensing whether the main beam (11) reaches a corresponding position or not so as to control the stop or the movement of the rack;

and/or the driving devices (15) are multiple and correspond to the pulleys (10) one by one;

and/or the inlet end of the concave guide plate (13) is a bell mouth (1301);

and/or the concave guide plate (13) is positioned at the center of the conveying surface of the furnace entering roller way (18).

5. The delivery system of claim 1, further comprising:

one end of the connecting shaft (14) is connected to the outer end of the pulley (10), and the other end of the connecting shaft passes through the corresponding main beam (11) on the same side and extends outwards and is connected with the driving device (15);

the bearing assembly (17) is used for rotatably connecting the connecting shaft (14) to the main beams (11) corresponding to the same side;

and a coupling (16) mounted on the other end of the connecting shaft (14) and connected to the driving device (15).

6. The delivery system of claim 1, further comprising:

the cantilever roller (1) is positioned in the heating furnace (4), the outer end of the cantilever roller is provided with a baffle (5) extending in the vertical direction, and the height of the inner end of the cantilever roller is flush with that of a fixed beam (3) of the heating furnace in the heating furnace (4);

and the pusher (6) is positioned outside the heating furnace (4) and arranged outside the outer end of the cantilever roller (1) and used for pushing the steel billet (7) positioned on the cantilever roller (1) onto the fixed beam (3) of the heating furnace so as to fully heat the middle part of the heating furnace (4).

7. The delivery system of claim 6,

the roller surface of the cantilever roller (1) is inclined downwards towards the direction close to the baffle (5) and the inclination angle is 3-7 degrees, and the cantilever roller is used for inducing the billet (7) to move towards the direction of the outer end of the cantilever roller (1) so as to prevent the billet from tipping;

the height of the upper end of the baffle (5) is lower than one half of the height of the steel billet (7) on the cantilever roller (1);

the pusher (6) comprises a push rod, the outer end of the push rod is inclined downwards towards the direction close to the baffle (5), the inclination angle is 10-15 degrees, and the push rod is used for preventing the billet (7) from tipping during thrust steel so as to stably push the billet onto the fixed beam (3) of the heating furnace;

preferably, an arc angle is arranged at the end part of the fixed beam (3) of the heating furnace close to the steel pushing direction, so that the blocking resistance of the transverse movement of the billet (7) is eliminated.

8. A method for conveying crescent-shaped steel billets, characterized in that a conveying system according to any one of claims 1 to 7 is used and the conveying method comprises the following steps:

a: in the state that the furnace entering roller way (18) stops running, the crescent-shaped steel billet (7) which is bent upwards is hoisted to the furnace entering roller way (18);

b: simultaneously starting a driving device (15) and a furnace entering roller way (18), driving a pulley (10) to move on a sliding rail (9), driving a main beam (11) and a rack to move by the pulley (10), and gradually clamping a steel billet (7) between a pair of concave guide plates (13) in the moving process, so that the concave guide plates (13) perform limiting guide on the steel billet (7) and are matched with the furnace entering roller way (18) to perform synchronous conveying in order to prevent the steel billet (7) from turning laterally in the process of conveying the steel billet (7) along with the furnace entering roller way (18) so as to send the steel billet into a heating furnace (4);

preferably, step b further comprises: the frame is controlled to stop or move by a driving device (15) according to whether the main beam (11) reaches the target position of a set proximity switch (20).

9. The method according to claim 8, wherein in step b, after the billet (7) is clamped between the pair of concave guide plates (13), the method further comprises:

b 1: for a steel billet (7) with the temperature higher than the target temperature, simultaneously closing a driving device (15) and a furnace entering roller way (18) to stop moving, then simultaneously pressing down two ends of the steel billet (7) through a pressing-down mechanism (8), and matching the upper surface of the furnace entering roller way (18) as a stress surface, so as to realize rapid alignment of the steel billet (7) on the furnace entering roller way (18), and after the alignment is finished, the pressing-down mechanism (8) retracts to enable the steel billet (7) and the furnace entering roller way (18) to form an unstressed state; starting a driving device (15) and a furnace entering roller way (18) to move so as to convey the billet (7) into the heating furnace (4);

b 2: for the steel billet (7) with the temperature lower than the target temperature, the driving device (15) and the furnace entering roller way (18) are closed at the same time to stop moving, and then the steel billet (7) is pressed down by the pressing mechanism (8) until the shortest vertical distance is less than 20mm, so that the phenomenon that the two ends of the steel billet (7) greatly swing to cause severe jumping during the conveying process of the steel billet (7) in the furnace entering roller way (18) is inhibited; the driving device (15) and the furnace entering roller way (18) are started to move, so that the billet (7) is conveyed into the heating furnace (4).

10. The delivery method of claim 8, further comprising:

c: after the steel billet (7) enters the heating furnace (4), the inclined surface of the cantilever roller (1) induces the steel billet (7) to move towards one side of the flange (5) of the cantilever roller (1), so that the steel billet (7) is prevented from turning over on the cantilever roller (1) to cause production accidents;

d: after the cantilever roller (1) stops, the pusher (6) pushes the billet (7) to transversely push the fixed beam (3) of the heating furnace.

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