CN114774672B - Billet charging control method and system - Google Patents
Billet charging control method and system Download PDFInfo
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- CN114774672B CN114774672B CN202210516475.0A CN202210516475A CN114774672B CN 114774672 B CN114774672 B CN 114774672B CN 202210516475 A CN202210516475 A CN 202210516475A CN 114774672 B CN114774672 B CN 114774672B
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 claims description 166
- 239000010959 steel Substances 0.000 claims description 166
- 238000010438 heat treatment Methods 0.000 claims description 86
- 238000001514 detection method Methods 0.000 claims description 4
- 238000012369 In process control Methods 0.000 claims 2
- 238000010965 in-process control Methods 0.000 claims 2
- 238000005259 measurement Methods 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/70—Furnaces for ingots, i.e. soaking pits
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Tunnel Furnaces (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The embodiment of the invention provides a billet charging control method and system, and relates to the technical field of billet charging. Aims to solve the problem that the billet charging control is not accurate enough. The billet charging control method comprises the steps of obtaining a first position signal representing the condition of a billet at a first preset position; acquiring a second position signal representing the condition of the billet at a second preset position; obtaining the length of the rear section of the billet after the interval between the first preset position and the second preset position is removed through the length measuring motor and the encoder; and controlling whether the furnace is charged or not according to the travel signal. The billet charging control system comprises a controller for executing the billet charging control method. The billet passes through the first preset position and the second preset position simultaneously, the length of the rear section after the distance between the first preset position and the second preset position is removed is measured by the length measuring motor and the encoder, the measuring error is reduced, the overall measuring precision of the billet length is improved, and therefore the charging of the billet can be accurately controlled, and the billet is prevented from being impacted in the charging process.
Description
Technical Field
The invention relates to the technical field of billet charging, in particular to a billet charging control method and system.
Background
The steel billet is conveyed into the heating furnace from the steel feeding roller way, and a buffer baffle is arranged at the tail end of the heating furnace on the steel billet conveying line. The device is mainly used for decelerating and braking the steel billet after the steel billet is conveyed into the heating furnace. In the prior art, a furnace roller way is generally provided with a plurality of sections for holding a plurality of billets to enter a heating furnace one by one. Under the same condition of the matching of the rotating speeds, the steel billet is theoretically and fully automatically conveyed into the heating furnace, but a series of problems such as blocking, interference, roller abrasion and the like can exist in the process of conveying the steel billet to influence the accuracy of steel billet conveying, so that the situation that double-billet conveying occurs on the rollers of the steel billet is caused, and the process of conveying the steel billet with accurate temperature can be completed only by frequent manual operation of operators.
Mainly has the following technical disadvantages:
the method comprises the following steps: according to different process requirements, the lengths of the billets are different, and in order to reduce the impact of the billets on the tail end of the heating furnace, operators can often perform human intervention after the billets are in contact with the tail end of the heating furnace soon. Firstly, the workload is increased, and secondly, the problem that the steel billet scrapes the furnace wall of the heating furnace due to improper manual operation or misoperation is solved; the operator cannot accurately judge and control the accurate position of the billet fed into the heating furnace through the video.
And two,: in order to improve the conveying efficiency, operators are arranged to command steel feeding operation on site. The heating tail end is provided with a positioning baffle plate to reduce the damage of the steel billet to the furnace wall of the heating furnace, but the steel billet impacts the positioning baffle plate, and the problem of inaccurate positioning cannot be avoided; and the baffle plate has short service life under high-temperature baking and impact for a long time.
And thirdly,: in the prior art, the circumference of a circle of roller is measured and calculated according to the diameter of a roller way to detect the conveying distance. In the normal production process, the steel billet on the conveying roller way is bent, the phenomenon of idle load or slip of the steel billet and the roller in a short time actually exists, the roller is gradually worn, and the measurement length is gradually inaccurate; especially after the roller way is replaced, the circumference of the replaced roller way is different from that of the non-replaced roller way, the length of the measured billet is often inaccurate, and the billet needs to be adjusted at any time.
Disclosure of Invention
The invention aims to provide a billet charging control method which can solve the problem that billet charging control is not accurate enough.
The invention further provides a billet charging control system which can solve the problem that billet charging control is not accurate enough.
Embodiments of the invention may be implemented as follows:
the embodiment of the invention provides a billet charging control method, which comprises the following steps:
acquiring a first position signal representing the condition of a steel billet at a first preset position of a steel billet feeding conveying line;
acquiring a second position signal representing the condition of the steel billet at a second preset position of the steel billet feeding conveying line;
controlling a length measuring motor and an encoder according to the first position signal and the second position signal to measure the length of the rear section of the billet after the distance between the first preset position and the second preset position is removed, so as to obtain a travel signal;
obtaining the measured length of the steel billet according to the travel signal and the distance between the first preset position and the second preset position so as to control the steel billet feeding conveying line;
the steel billet feeding conveying line comprises a plurality of sections of conveying rollers which are sequentially arranged along the conveying direction of the steel billet, and the steel billet feeding conveying line is used for conveying the steel billet to the heating furnace; the first preset position and the second preset position are distributed at intervals along the conveying direction; the length measuring motor and the encoder are independent of the billet feeding conveying line, the encoder is arranged on the length measuring motor, and the set speed of the length measuring motor is the same as the set speed of the conveying roller between the first preset position and the second preset position.
In addition, the billet charging control method provided by the embodiment of the invention can also have the following additional technical characteristics:
optionally, the step of obtaining a first position signal representing the condition of the steel billet at a first preset position of the steel billet feeding conveyor line comprises:
acquiring a first signal representing that a billet exists at the first preset position; or obtaining a second signal representing that the first preset position is free of a billet;
the step of obtaining a second position signal representing the condition of the steel billet at a second preset position of the steel billet feeding conveyor line comprises the following steps:
acquiring a third signal representing that a billet exists at the second preset position; or obtaining a fourth signal representing that no billet exists at the second preset position;
the step of controlling the length measuring motor and the encoder according to the first position signal and the second position signal to measure the length of the rear section of the billet after the distance between the first preset position and the second preset position is removed, and obtaining the travel signal comprises the following steps:
according to the first signal and the third signal, controlling the length measuring motor to start, and controlling the encoder to start detecting the stroke of the length measuring motor; and controlling the length measuring motor to stop until the first signal is converted into the second signal, and controlling the encoder to stop detecting the stroke of the length measuring motor so as to obtain the stroke signal.
Optionally, the step of obtaining the measured length of the steel billet according to the travel signal and the distance between the first preset position and the second preset position so as to control the steel billet feeding conveying line includes:
if A+B=C is less than or equal to D, controlling the steel billet feeding conveying line to convey the steel billet to the heating furnace;
wherein A is the stroke represented by the stroke signal, B is the distance between the first preset position and the second preset position, C is the measured length of the billet, and D is the heating length of the heating furnace.
Optionally, the step of obtaining the measured length of the steel billet according to the travel signal and the distance between the first preset position and the second preset position so as to control the steel billet feeding conveying line further includes:
if a+b=c > D, controlling the billet feeding conveying line to move the billet out along the lateral direction of the conveying direction;
wherein A is the stroke represented by the stroke signal, B is the distance between the first preset position and the second preset position, C is the measured length of the billet, and D is the heating length of the heating furnace.
Optionally, the number relationship between the distance between the first preset position and the second preset position and the length of the steel billet is B > E x 10%;
Wherein B is the distance between the first preset position and the second preset position, and E is the length of the billet.
Optionally, the billet charging control method further comprises the following steps:
acquiring a third position signal representing the condition of the steel billet at a third preset position of the steel billet feeding conveying line;
controlling the speeds of the first section conveying roller and the second section conveying roller according to the third position signal and the second position signal so as to prevent the steel billet on the second section conveying roller from colliding with the steel billet on the third section conveying roller;
the multi-section conveying roller comprises a first section conveying roller, a second section conveying roller, a third section conveying roller and a fourth section conveying roller which are sequentially arranged along the conveying direction, wherein a third preset position is located at the tail end of the second section conveying roller, the first preset position is located between the second section conveying roller and the third section conveying roller, and the second preset position is located between the third section conveying roller and the fourth section conveying roller.
Optionally, the step of obtaining a third position signal representing the condition of the billet at a third preset position of the billet feeding conveyor line comprises:
obtaining a fifth signal representing that the third preset position is provided with a billet;
The controlling the speed of the first section conveying roller and the second section conveying roller according to the third position signal and the second position signal to prevent the steel billet on the second section conveying roller from colliding with the steel billet on the third section conveying roller comprises:
and controlling the first section conveying roller and the second section conveying roller to stop according to the fifth signal until the third signal is converted into the fourth signal, and controlling the first section conveying roller and the second section conveying roller to start.
Optionally, the number relationship between the distance between the third preset position and the first preset position and the length of the steel billet is F > E x 10%;
wherein F is the distance between the third preset position and the first preset position, and E is the length of the billet.
Optionally, the billet charging control method further comprises the following steps:
obtaining a seventh signal representing that a billet exists at a fourth preset position of the billet feeding conveying line, or obtaining an eighth signal representing that a billet does not exist at the fourth preset position of the billet feeding conveying line;
if the seventh signal is converted into the eighth signal, controlling an internal detection encoder to start detecting the travel of a conveying wheel in the heating furnace, and controlling the conveying wheel in the heating furnace to stop conveying billets until the travel of the conveying wheel reaches a preset travel;
The first section conveying roller, the second section conveying roller, the third section conveying roller, the fourth section conveying roller and the heating furnace are sequentially arranged along the conveying direction, the fourth preset position is located between the fourth section conveying roller and the heating furnace, and the internal detection encoder is arranged in the heating furnace.
The embodiment of the invention also provides a billet charging control system. The billet charging control system comprises a billet charging conveying line, a heating furnace, a length measuring motor, an encoder, a first detector, a second detector and a controller; the steel billet feeding conveying line comprises a plurality of sections of conveying rollers which are sequentially arranged along the steel billet conveying direction, and the steel billet feeding conveying line is used for conveying steel billets to the heating furnace; the first preset positions and the second preset positions are distributed at intervals along the conveying direction, the first detector is arranged at the first preset position, the second detector is arranged at the second preset position, the first detector is used for detecting and obtaining a first position signal representing the condition of the steel billet at the first preset position of the steel billet feeding conveying line, and the second detector is used for detecting and obtaining a second position signal representing the condition of the steel billet at the second preset position of the steel billet feeding conveying line; the length measuring motor is arranged independently of the billet feeding conveying line, the encoder is arranged on the length measuring motor, the encoder is used for detecting a travel signal representing the travel of the length measuring motor, the set speed of the length measuring motor is the same as the set speed of the conveying roller between the first preset position and the second preset position, and the controller is used for executing a billet feeding control method.
Optionally, the billet feeding conveying line further comprises a transverse moving chain, a lifting driving mechanism and a chain motor; the number of the transverse moving chains is at least two, and all the transverse moving chains are arranged on the conveying rollers close to the heating furnace; the lifting driving mechanism is connected with the transverse moving chain and is used for driving the transverse moving chain to lift the steel billet on the conveying roller or lower the steel billet on the transverse moving chain onto the conveying roller; the chain motor is connected with the transverse moving chain and is used for driving the transverse moving chain to drive.
The billet charging control method and system provided by the embodiment of the invention have the beneficial effects that:
the billet feeding control method comprises the steps of obtaining a first position signal representing the condition of a billet on a first preset position of a billet feeding conveying line; acquiring a second position signal representing the condition of the steel billet at a second preset position of the steel billet feeding conveying line; controlling a length measuring motor and an encoder according to the first position signal and the second position signal to measure the length of the rear section of the billet after the distance between the first preset position and the second preset position is removed, so as to obtain a travel signal; and obtaining the measured length of the billet according to the travel signal and the distance between the first preset position and the second preset position so as to control the billet feeding conveying line.
The first preset position and the second preset position are fixed in position, and the distance between the first preset position and the second preset position is fixed. In the process of conveying the steel billet, when the front end of the steel billet enters the first preset position and the second preset position at the same time, the length of the rear section of the steel billet is measured by the length measuring motor and the encoder. The set speed of the length measuring motor is the same as the set speed of the conveying roller between the first preset position and the second preset position, the length measuring motor and the encoder are independent of the billet feeding conveying line, the speed of the length measuring motor is not affected by the billet conveying condition, and the detected travel signal is combined with the distance between the first preset position and the second preset position, namely the whole length of the billet. That is, the length of the front section of the steel billet is measured through the fixed distance between the first preset position and the second preset position, no measurement error exists, the length of the rear section of the steel billet is measured by the length measuring motor and the encoder which are independent of the steel billet feeding conveying line, the measurement error can be reduced, and the measurement accuracy is improved, so that the steel billet can be sequentially conveyed according to the length accurate control of the steel billet, the collision of a plurality of steel billets in the steel billet conveying process is avoided, the steel billet feeding process can be accurately controlled, the steel billet is prevented from being impacted with the heating furnace after being fed into the furnace, the scraping damage is caused to the heating furnace, and the problem that the steel billet feeding control is not accurate is solved.
The billet feeding control system comprises a billet feeding conveying line, a heating furnace, a length measuring motor, an encoder and a controller; the controller is used for executing the billet charging control method. The problem of inaccurate billet charging control can be solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of a billet charging control method provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a billet charging control system according to an embodiment of the present invention.
Icon: 100-first stage conveying rollers; 110-second stage conveying rollers; 120-third stage conveying rollers; 130-fourth stage conveying rollers; 140-heating furnace; 101-a flange; 102-a first baffle; 103-a second baffle; 200-a first detector; 210-a second detector; 220-a third detector; 230-fourth detector; 300-traversing chain; 310-an oil cylinder; 320-chain motor; 400-length measuring motor; 410-an encoder; 500-inner encoder.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The billet charging control method according to the present embodiment will be described in detail with reference to fig. 1 to 2.
Referring to fig. 1 and 2, an embodiment of the present invention provides a method for controlling a billet entering into a furnace, comprising the following steps:
acquiring a first position signal representing the condition of a steel billet at a first preset position of a steel billet feeding conveying line;
acquiring a second position signal representing the condition of the steel billet at a second preset position of the steel billet feeding conveying line;
according to the first position signal and the second position signal, the length measuring motor 400 and the encoder 410 are controlled to measure the length of the rear section of the billet after the interval between the first preset position and the second preset position is removed, so as to obtain a travel signal;
obtaining the measured length of the billet according to the travel signal and the distance between the first preset position and the second preset position so as to control the billet feeding conveying line;
wherein, the billet feeding conveying line comprises a plurality of sections of conveying rollers which are sequentially arranged along the conveying direction of the billets, and the billet feeding conveying line is used for conveying the billets to the heating furnace 140; the first preset position and the second preset position are distributed at intervals along the conveying direction; the length measuring motor 400 and the encoder 410 are arranged independently of the billet feeding conveying line, the encoder 410 is arranged on the length measuring motor 400, and the set speed of the length measuring motor 400 is the same as the set speed of the conveying roller between the first preset position and the second preset position.
By "the length-measuring motor 400 and the encoder 410 are provided independently of the billet-charging conveyor line", it is meant that the length-measuring motor 400 and the encoder 410 are provided independently, the rotation of the length-measuring motor 400 and the measurement of the encoder 410 are performed separately, the encoder 410 measures the stroke of the length-measuring motor 400 after starting, and the length-measuring motor 400 rotates at the same speed as the conveyor roller between the first preset position and the second preset position.
In the process of conveying the steel billets by the steel billet feeding conveying line along the conveying direction heating furnace 140, the steel billets firstly reach a first preset position, then reach a second preset position, and finally the whole steel billets are conveyed into the heating furnace 140 through the first preset position and the second preset position. The length of the front section of the steel billet is located between the first preset position and the second preset position, the length of the front section is the distance between the first preset position and the second preset position, then the length of the rear section of the steel billet is located behind the first preset position, and the length measuring motor 400 and the encoder 410 measure the length of the rear section of the steel billet after the distance between the first preset position and the second preset position is removed, so as to obtain a stroke signal. The length represented by the travel signal plus the distance between the first preset position and the second preset position is the measured length of the billet.
Because the first preset position and the second preset position are fixed in position, the distance between the first preset position and the second preset position is fixed. The length of the section of the billet positioned at the first preset position and the second preset position has no error, and the length measuring motor 400 and the encoder 410 only measure the length of the rear section of the billet, so that the measurement error can be reduced as a whole. Meanwhile, the set speed of the length measuring motor 400 is the same as the set speed of the conveying roller between the first preset position and the second preset position, the length measuring motor 400 and the encoder 410 are arranged independently of the billet feeding conveying line, and the speed of the length measuring motor 400 is not affected by the billet conveying condition. For example, the steel billet is bent, the steel billet and the conveying roller have no load or slip for a short time, and the roller is gradually worn, so that the speed of the length measuring motor 400 is not affected.
Referring to fig. 1 and 2, in this embodiment, the step of obtaining a first position signal representing a billet condition at a first preset position of a billet feeding conveyor line includes:
acquiring a first signal representing that a billet exists at a first preset position; or obtaining a second signal representing the absence of the billet at the first preset position;
the step of obtaining a second position signal indicative of the condition of the billet at a second predetermined position of the billet in-furnace delivery line comprises:
Acquiring a third signal representing that a billet exists at a second preset position; or obtaining a fourth signal representing no billet at the second preset position;
the step of controlling the length measuring motor 400 and the encoder 410 according to the first position signal and the second position signal to measure the length of the rear section of the billet after the distance between the first preset position and the second preset position is removed, and obtaining the travel signal includes:
according to the first signal and the third signal, the length measuring motor 400 is controlled to start, and the encoder 410 is controlled to start detecting the stroke of the length measuring motor 400; until the first signal is converted into the second signal, the length-measuring motor 400 is controlled to stop, and the encoder 410 is controlled to stop detecting the stroke of the length-measuring motor 400 to obtain a stroke signal.
In the process of conveying the steel billet along the conveying direction, the front end of the steel billet passes through a first preset position, and the controller receives a first signal. The billet continues to move forward, and when the billet moves to the second preset position, the controller receives a third signal. At this time, the billet can be detected at both the first preset position and the second preset position, and the rear end of the billet is located outside the first preset position, and then the length measuring motor 400 and the encoder 410 are started.
Referring to fig. 1 and 2, in the present embodiment, according to a travel signal and a distance between a first preset position and a second preset position, a measured length of a billet is obtained, so as to control a billet feeding conveyor line, the method includes:
if a+b=c is less than or equal to D, controlling the billet feeding conveying line to convey the billet to the heating furnace 140;
wherein A is the stroke represented by the stroke signal, B is the distance between a first preset position and a second preset position, C is the measured length of a billet, and D is the heating length of a heating furnace.
The "heating length of the heating furnace" refers to the working length of the heating furnace 140, and if the length of the billet is smaller than the heating length of the billet after the billet is charged, the billet can be effectively prevented from striking the rear end of the heating furnace 140. Therefore, when the measured length of the billet is equal to or less than the heating length of the heating furnace, the billet feeding conveyor line can be controlled to continue conveying the billet to the heating furnace 140. Therefore, the accuracy of the measured length of the billet can control the accurate charging of the billet.
Referring to fig. 1 and 2, in this embodiment, according to the travel signal and the distance between the first preset position and the second preset position, the step of obtaining the measured length of the billet to control the billet feeding conveyor line further includes: if a+b=c > D, controlling the billet feeding conveyor line to move the billet out along the lateral direction of the conveying direction; wherein A is the stroke represented by the stroke signal, B is the distance between a first preset position and a second preset position, C is the measured length of a billet, and D is the heating length of a heating furnace.
When the measured length of the billet is greater than the heating length of the heating furnace, the billet feeding conveying line is controlled to output the billet to the side of the conveying direction, so that the billet is prevented from impacting the heating furnace 140 after being input into the heating furnace 140.
Referring to fig. 1 and 2, in the present embodiment, the number relationship between the distance between the first preset position and the second preset position and the length of the billet is B > E x 10%; wherein B is the distance between the first preset position and the second preset position, and E is the length of the billet. In this embodiment, the distance between the first preset position and the second preset position is nine tenth of the length of the billet.
The length of the front section of the billet is measured by the first preset position and the second preset position with unchanged positions, the length of the rear section of the billet is measured by the length measuring motor 400 and the encoder 410, and the greater the part ratio of the billet measured by the distance between the first preset position and the second preset position is, the higher the overall measurement accuracy of the billet is. Therefore, the distance between the first preset position and the second preset position is at least greater than one tenth of the length of the steel billet, so that the accuracy of steel billet length measurement can be effectively improved.
The length of the S5 billet refers to the actual length of the billet, or the theoretical length, and the measured length of the S3 billet is the measured length measured by the method provided in the present application.
Referring to fig. 1 and 2, in the present embodiment, the billet charging control method further includes the following steps:
acquiring a third position signal representing the condition of the steel billet at a third preset position of the steel billet feeding conveying line;
controlling the speed of the first stage conveying roller 100 and the second stage conveying roller 110 according to the third position signal and the second position signal to prevent the billet on the second stage conveying roller 110 from colliding with the billet on the third stage conveying roller 120;
the multi-stage conveying rollers include a first stage conveying roller 100, a second stage conveying roller 110, a third stage conveying roller 120 and a fourth stage conveying roller 130 which are sequentially arranged along a conveying direction, a third preset position is located at the tail end of the second stage conveying roller 110, the first preset position is located between the second stage conveying roller 110 and the third stage conveying roller 120, and the second preset position is located between the third stage conveying roller 120 and the fourth stage conveying roller 130.
The billet is transferred from the first stage transfer roller 100 to the second stage transfer roller 110, then sequentially transferred to the third preset position and the first preset position, then transferred to the third stage transfer roller 120, and then transferred to the fourth stage transfer roller 130 through the second preset position.
The third preset position is set at the end of the second-stage conveying roller 110, and whether the second-stage conveying roller 110 has a billet is judged according to the third position signal, so that whether the first-stage conveying roller 100 conveys the billet to the second-stage conveying roller 110 is controlled; the second preset position is located between the third stage conveying roller 120 and the fourth stage conveying roller 130, and whether the third stage conveying roller 120 has a billet is determined according to the second position signal, so as to determine whether the second stage conveying roller 110 conveys the billet to the third stage conveying roller 120. So that the steel billet on the second stage conveying roller 110 can be prevented from colliding with the steel billet on the third stage conveying roller 120, that is, the next steel billet is conveyed after the measurement of the previous steel billet is completed.
Referring to fig. 1 and 2, in this embodiment, the step of obtaining a third position signal representing the condition of the billet at a third preset position of the billet feeding conveyor line includes:
obtaining a fifth signal representing that a billet exists at a third preset position;
controlling the speed of the first stage conveyor roll 100 and the second stage conveyor roll 110 based on the third position signal and the second position signal to prevent the steel slab on the second stage conveyor roll 110 from colliding with the steel slab on the third stage conveyor roll 120 includes:
according to the fifth signal, the first stage conveying roller 100 and the second stage conveying roller 110 are controlled to stop until the third signal is converted into the fourth signal, and the first stage conveying roller 100 and the second stage conveying roller 110 are controlled to start.
In the process of conveying the steel billet from the first section conveying roller 100 to the second section conveying roller 110, the steel billet moves to a third preset position, and when the third preset position detects that the steel billet exists, the first section conveying roller 100 and the second section conveying roller 110 are controlled to stop, and the steel billet is conveyed after the last steel billet finishes measurement. When the controller receives the third signal, it indicates that the second preset position has a billet, and after the billet moves out of the second preset position, the controller receives the fourth signal, and at this time, the first stage conveying roller 100 and the second stage conveying roller 110 may be started, the second stage conveying roller 110 conveys the billet to the third stage conveying roller 120, and the first stage conveying roller 100 conveys the billet to the second stage conveying roller 110.
Referring to fig. 1 and 2, in the present embodiment, the number relationship between the distance between the third preset position and the first preset position and the length of the billet is F > E x 10%; wherein F is the distance between the third preset position and the first preset position, and E is the length of the billet. In this embodiment, the distance between the third preset position and the first preset position is approximately one tenth of the length of the billet. The distance between the first preset position and the second preset position is greater than the distance between the third preset position and the first preset position, namely B > F, and B is approximately equal to nine times of F.
In the conveying process, the length of the rear section of the billet is located between the third preset position and the first preset position, so as to prevent the rear billet from colliding with the billet measured in front, and meanwhile, sufficient time is reserved for measuring the length of the rear end of the billet, and the distance between the third preset position and the first preset position is larger than the length of the rear section of the billet. In order to ensure the overall measurement accuracy of the steel billet, the ratio of the length of the rear section of the steel billet can be reduced as much as possible, and in this embodiment, the length of the rear section of the steel billet is designed to be one tenth of the overall length of the steel billet, so that the distance between the third preset position and the first preset position is greater than one tenth of the length of the steel billet.
In this embodiment, the billet charging control method further includes the following steps:
obtaining a seventh signal representing that a billet exists at a fourth preset position of the billet feeding conveying line, or obtaining an eighth signal representing that a billet does not exist at the fourth preset position of the billet feeding conveying line;
if the seventh signal is converted into the eighth signal, the inner detecting encoder 500 is controlled to start detecting the travel of the conveying wheel in the heating furnace 140 until the travel of the conveying wheel reaches the preset travel, and the conveying wheel in the heating furnace 140 is controlled to stop conveying the billet;
the first stage conveying roller 100, the second stage conveying roller 110, the third stage conveying roller 120, the fourth stage conveying roller 130 and the heating furnace 140 are sequentially arranged along the conveying direction, the fourth preset position is located between the fourth stage conveying roller 130 and the heating furnace 140, and the inner measuring encoder 500 is arranged in the heating furnace 140.
After the billet is transferred from the fourth stage transfer roller 130 to the heating furnace 140, when the rear end of the billet passes through the fourth preset position, the seventh signal received by the controller is converted into the eighth signal, and at this time, the inner encoder 500 starts to measure the travel of the transfer wheel in the heating furnace 140, and when the travel of the transfer wheel reaches the preset travel, the transfer wheel in the heating furnace 140 is controlled to stop the transfer of the billet. The preset stroke is set according to the size of a reserved gap between the front end of the steel billet and the rear end of the heating furnace 140 after the steel billet enters the furnace, so that a certain gap is reserved between the front end of the steel billet and the rear end of the heating furnace 140 after the steel billet enters the furnace, and collision between the steel billet and a baffle plate at the rear end of the heating furnace 140 is avoided. And the accuracy of billet charging control can be further improved by performing secondary measurement.
Referring to fig. 1 and 2, according to the method for controlling the charging of a steel billet provided in this embodiment, the method for controlling the charging of a steel billet includes the following specific implementation steps:
s1, obtaining a fifth signal representing that a billet exists at a third preset position.
S2, controlling the speed of the first stage conveying roller 100 and the second stage conveying roller 110 according to the third position signal and the second position signal so as to prevent the steel billet on the second stage conveying roller 110 from colliding with the steel billet on the third stage conveying roller 120.
S21, according to the fifth signal, the first-stage conveying roller 100 and the second-stage conveying roller 110 are controlled to stop until the third signal is converted into the fourth signal, and the first-stage conveying roller 100 and the second-stage conveying roller 110 are controlled to start.
S3, obtaining a first position signal representing the condition of the steel billet at a first preset position of the steel billet feeding conveying line. S31, obtaining a first signal representing that a billet exists at a first preset position; or a second signal is obtained that characterizes the absence of the billet at the first preset position.
S4, obtaining a second position signal representing the condition of the steel billet at a second preset position of the steel billet feeding conveying line. S41, obtaining a third signal representing that a billet exists at a second preset position; or a fourth signal representing the absence of a billet at the second preset position is obtained.
S5, controlling the length measuring motor 400 and the encoder 410 according to the first position signal and the second position signal to measure the length of the rear section of the billet after the distance between the first preset position and the second preset position is removed, so as to obtain a travel signal; s51, controlling the starting of the length measuring motor 400 according to the first signal and the third signal, and controlling the encoder 410 to start detecting the stroke of the length measuring motor 400; until the first signal is converted into the second signal, the length-measuring motor 400 is controlled to stop, and the encoder 410 is controlled to stop detecting the stroke of the length-measuring motor 400 to obtain a stroke signal.
S6, obtaining the measured length of the steel billet according to the travel signal and the distance between the first preset position and the second preset position so as to control the steel billet feeding conveying line. S61, if a+b=c is less than or equal to D, controlling the billet feeding conveyor line to convey the billet to the heating furnace 140; and S62, if A+B=C > D, controlling the billet feeding conveying line to move out the billet along the side of the conveying direction.
S7, obtaining a seventh signal representing that the steel billet exists at a fourth preset position of the steel billet feeding conveying line, or obtaining an eighth signal representing that the steel billet does not exist at the fourth preset position of the steel billet feeding conveying line.
And S8, if the seventh signal is converted into the eighth signal, controlling the inner measuring encoder 500 to start detecting the travel of the conveying wheel in the heating furnace 140 until the travel of the conveying wheel reaches the preset travel, and controlling the conveying wheel in the heating furnace 140 to stop conveying the billet.
The billet charging control method provided by the embodiment has at least the following advantages:
during the conveying process of the steel billet, when the length of the front section of the steel billet is measured by the first preset position and the second preset position with fixed positions, the length of the rear section of the steel billet is measured by the length measuring motor 400 and the encoder 410. Can reduce measuring error, improve measurement accuracy to can be according to the length accurate control steel billet carry in proper order of steel billet, avoid the steel billet to carry in-process a plurality of steel billets to bump, can accurately control the steel billet simultaneously and go into the stove, prevent that the steel billet from going into the stove after the striking takes place with heating furnace 140, cause the scratch to heating furnace 140, improve the steel billet and go into the stove control not accurate problem inadequately. Meanwhile, the set speed of the length measuring motor 400 is the same as the set speed of the conveying roller between the first preset position and the second preset position, the length measuring motor 400 and the encoder 410 are arranged independently of the billet feeding conveying line, the speed of the length measuring motor 400 is not affected by the billet conveying condition, and the measuring precision can be further improved.
Referring to fig. 1 and 2, the embodiment of the invention further provides a billet charging control system. The billet charging control system comprises a billet charging conveying line, a heating furnace 140, a length measuring motor 400, an encoder 410, a first detector 200, a second detector 210 and a controller; the billet feeding conveying line comprises a plurality of sections of conveying rollers which are sequentially arranged along the billet conveying direction, and the billet feeding conveying line is used for conveying billets to the heating furnace 140; the first preset position and the second preset position are distributed at intervals along the conveying direction, the first detector 200 is arranged at the first preset position, the second detector 210 is arranged at the second preset position, the first detector 200 is used for detecting and obtaining a first position signal representing the condition of the billet on the first preset position of the billet feeding conveying line, and the second detector 210 is used for detecting and obtaining a second position signal representing the condition of the billet on the second preset position of the billet feeding conveying line; the length measuring motor 400 is arranged independently of the billet feeding conveying line, the encoder 410 is arranged on the length measuring motor 400, the encoder 410 is used for detecting a travel signal representing the travel of the length measuring motor 400, the set speed of the length measuring motor 400 is the same as the set speed of the conveying roller between the first preset position and the second preset position, and the controller is used for executing the billet feeding control method. The problem of inaccurate billet charging control can be solved.
The multi-stage conveying rollers comprise a first stage conveying roller 100, a second stage conveying roller 110, a third stage conveying roller 120 and a fourth stage conveying roller 130 which are sequentially arranged along the conveying direction, wherein a third preset position is positioned at the tail end of the second stage conveying roller 110, the first preset position is positioned between the second stage conveying roller 110 and the third stage conveying roller 120, and the second preset position is positioned between the third stage conveying roller 120 and the fourth stage conveying roller 130. The billet charging control system further comprises a third detector 220, the third detector 220 is arranged at a third preset position, and the third detector 220 is used for detecting and obtaining a third position signal representing the billet condition at the third preset position of the billet charging conveying line.
The first stage conveying roller 100, the second stage conveying roller 110, the third stage conveying roller 120, the fourth stage conveying roller 130 and the heating furnace 140 are sequentially arranged along the conveying direction, the fourth preset position is located between the fourth stage conveying roller 130 and the heating furnace 140, and the inner measuring encoder 500 is arranged in the heating furnace 140. The billet charging control system further comprises a fourth detector 230, wherein the fourth detector 230 is arranged at a fourth preset position, and the fourth detector 230 is used for detecting and obtaining a seventh signal representing that a billet exists at the fourth preset position of the billet charging conveying line or obtaining an eighth signal representing that no billet exists at the fourth preset position of the billet charging conveying line.
Referring to fig. 1 and 2, in the present embodiment, flanges 101 are provided on both sides of the first stage conveying roller 100, the second stage conveying roller 110, the third stage conveying roller 120, and the fourth stage conveying roller 130, for guiding and limiting the conveyance of the billet. The steel billet charging control system further comprises a baffle assembly, the baffle assembly comprises a first baffle 102 and a second baffle 103, the baffle assembly is respectively arranged on two sides of the conveying direction, the baffle assembly is opposite in position and is located between two adjacent conveying rollers, and steel billets are further guided and limited. Wherein, the first stage conveying roller 100, the second stage conveying roller 110, the third stage conveying roller 120 and the fourth stage conveying roller 130 can be provided with baffle assemblies.
Referring to fig. 1 and 2, in the present embodiment, the billet feeding conveyor line further includes a traverse chain 300, a lifting driving mechanism, and a chain motor 320; the number of the traverse chains 300 is at least two, and all the traverse chains 300 are arranged on a conveying roller arranged near the heating furnace 140; the lifting driving mechanism is connected with the transverse moving chain 300 and is used for driving the transverse moving chain 300 to lift the steel billet on the conveying roller or lower the steel billet on the transverse moving chain 300 onto the conveying roller; the chain motor 320 is connected to the traverse chain 300, and the chain motor 320 is used to drive the traverse chain 300.
Specifically, the traverse chain 300 spans the conveying rollers, and is specifically disposed at the end of the third conveying roller 120 and the fourth conveying roller 130, and is evenly distributed on both sides with the conveying direction as the center. The lifting driving mechanism can be an oil cylinder 310 or equipment with stronger driving force such as an air cylinder or a worm gear, the oil cylinder 310 is used for lifting the transverse moving chain 300 to move up and down, the transverse moving chain 300 is provided with a chain motor 320, the chain motor 320 is used for driving the transverse moving chain 300 to rotate, and the lifting height of the transverse moving chain 300 is higher than the height of a roller way surface of a conveying roller and a billet. The traverse chain 300 is capable of forward and reverse driving and outputting the billet to the left or right in the conveying direction.
Under the condition that the measured billet is overlong or the bending radian of the billet is large and cannot meet the condition of entering a furnace, in order not to influence production, when the billet which does not meet the standard moves to the position above the transverse moving chain 300, the oil cylinder 310 is driven to lift the transverse moving chain 300, the transverse moving chain 300 lifts the billet off the surface of a roller way, the chain motor 320 drives the transverse moving chain 300 to rotate, and the transverse moving chain 300 drives the billet to move to two sides. The operator uses the cutting gun to perform field treatment on the overlength steel billet, cuts off the overlength part, the treated steel billet, the transverse moving chain 300 rotates and moves the steel billet to the position above the roller way, the oil cylinder 310 descends, and the steel billet is replaced after the online overlength steel treatment is realized, so that the treatment period is shortened. For larger bending radians, the transverse moving chain 300 is directly removed by a crane at two sides. Under the condition of processing abnormal billets, after the transverse moving chain 300 ascends, the billets can be normally conveyed into the heating furnace 140 at a reserved height, production is not affected, and seamless processing of the billets entering the furnace is realized.
The present invention is not limited to the above embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (9)
1. The billet charging control method is characterized by comprising the following steps of:
the step of obtaining a first position signal representing the condition of the steel billet at a first preset position of the steel billet feeding conveyor line comprises the steps of; acquiring a first signal representing that a billet exists at the first preset position; or obtaining a second signal representing that the first preset position is free of a billet;
the step of obtaining a second position signal representing the condition of the steel billet at a second preset position of the steel billet feeding conveyor line comprises the steps of; acquiring a third signal representing that a billet exists at the second preset position; or obtaining a fourth signal representing that no billet exists at the second preset position;
according to the first position signal and the second position signal, controlling a length measuring motor (400) and an encoder (410) to measure the length of the rear section of the billet after the distance between the first preset position and the second preset position is removed, and obtaining a travel signal comprises the following steps: according to the first signal and the third signal, controlling the length measuring motor (400) to start, and controlling the encoder (410) to start detecting the stroke of the length measuring motor (400); until the first signal is converted into the second signal, controlling the length measuring motor (400) to stop, and controlling the encoder (410) to stop detecting the stroke of the length measuring motor (400) so as to obtain the stroke signal;
Obtaining the measured length of the steel billet according to the travel signal and the distance between the first preset position and the second preset position so as to control the steel billet feeding conveying line comprises the following steps: if a+b=c is less than or equal to D, controlling the billet feeding conveying line to convey the billet to the heating furnace (140);
the steel billet feeding conveying line comprises a plurality of sections of conveying rollers which are sequentially arranged along the conveying direction of the steel billets, and the steel billet feeding conveying line is used for conveying the steel billets to the heating furnace (140); the first preset position and the second preset position are distributed at intervals along the conveying direction; the length measuring motor (400) and the encoder (410) are arranged independently of the billet feeding conveying line, the encoder (410) is arranged on the length measuring motor (400), and the set speed of the length measuring motor (400) is the same as the set speed of the conveying roller between the first preset position and the second preset position; a is the stroke represented by the stroke signal, B is the distance between the first preset position and the second preset position, C is the measured length of the billet, and D is the heating length of the heating furnace.
2. The method according to claim 1, wherein the step of obtaining a measured length of the billet according to the travel signal and the distance between the first preset position and the second preset position to control the billet feeding conveyor line further comprises:
If a+b=c > D, controlling the billet feeding conveying line to move the billet out along the lateral direction of the conveying direction;
wherein A is the stroke represented by the stroke signal, B is the distance between the first preset position and the second preset position, C is the measured length of the billet, and D is the heating length of the heating furnace.
3. The billet in furnace control method according to claim 2, wherein the number relationship between the distance between the first preset position and the second preset position and the length of the billet is B > E x 10%;
wherein B is the distance between the first preset position and the second preset position, and E is the length of the billet.
4. A billet in charge control method according to any one of claims 1 to 3, further comprising the steps of:
acquiring a third position signal representing the condition of the steel billet at a third preset position of the steel billet feeding conveying line;
controlling the speed of the first section conveying roller (100) and the second section conveying roller (110) according to the third position signal and the second position signal so as to prevent the billet on the second section conveying roller (110) from colliding with the billet on the third section conveying roller (120);
The multi-section conveying roller comprises a first section conveying roller (100), a second section conveying roller (110), a third section conveying roller (120) and a fourth section conveying roller (130) which are sequentially arranged along the conveying direction, wherein a third preset position is located at the tail end of the second section conveying roller (110), the first preset position is located between the second section conveying roller (110) and the third section conveying roller (120), and the second preset position is located between the third section conveying roller (120) and the fourth section conveying roller (130).
5. The method of claim 4, wherein the step of obtaining a third position signal indicative of a condition of the billet at a third predetermined position of the billet in-furnace delivery line comprises:
obtaining a fifth signal representing that the third preset position is provided with a billet;
the controlling of the speed of the first stage conveying roller (100) and the second stage conveying roller (110) according to the third position signal and the second position signal to prevent the steel billet on the second stage conveying roller (110) from colliding with the steel billet on the third stage conveying roller (120) comprises:
according to the fifth signal, the first section conveying roller (100) and the second section conveying roller (110) are controlled to stop until the third signal is converted into the fourth signal, and the first section conveying roller (100) and the second section conveying roller (110) are controlled to start.
6. The billet in-process control method according to claim 4, wherein: the number relation between the distance between the third preset position and the first preset position and the length of the steel billet is F & gtE 10%;
wherein F is the distance between the third preset position and the first preset position, and E is the length of the billet.
7. The billet in-process control method according to claim 4, further comprising the steps of:
obtaining a seventh signal representing that a billet exists at a fourth preset position of the billet feeding conveying line, or obtaining an eighth signal representing that a billet does not exist at the fourth preset position of the billet feeding conveying line;
if the seventh signal is converted into the eighth signal, controlling an internal detection encoder (500) to start detecting the travel of the conveying wheel in the heating furnace (140), and controlling the conveying wheel in the heating furnace (140) to stop conveying the billet until the travel of the conveying wheel reaches a preset travel;
the first section conveying roller (100), the second section conveying roller (110), the third section conveying roller (120), the fourth section conveying roller (130) and the heating furnace (140) are sequentially arranged along the conveying direction, a fourth preset position is located between the fourth section conveying roller (130) and the heating furnace (140), and the inner detection encoder (500) is arranged in the heating furnace (140).
8. A billet charging control system, which is characterized in that: the billet charging control system comprises a billet charging conveying line, a heating furnace (140), a length measuring motor (400), an encoder (410), a first detector (200), a second detector (210) and a controller; the steel billet feeding conveying line comprises a plurality of sections of conveying rollers which are sequentially arranged along the steel billet conveying direction, and the steel billet feeding conveying line is used for conveying steel billets to the heating furnace (140); the first preset positions and the second preset positions are distributed at intervals along the conveying direction, the first detector (200) is arranged at the first preset position, the second detector (210) is arranged at the second preset position, the first detector (200) is used for detecting and obtaining a first position signal representing the condition of the steel billet at the first preset position of the steel billet feeding conveying line, and the second detector (210) is used for detecting and obtaining a second position signal representing the condition of the steel billet at the second preset position of the steel billet feeding conveying line; the length measuring motor (400) is arranged independently of the billet feeding conveying line, the encoder (410) is arranged on the length measuring motor (400), the encoder (410) is used for detecting a travel signal representing the travel of the length measuring motor (400), the set speed of the length measuring motor (400) is the same as the set speed of the conveying roller between the first preset position and the second preset position, and the controller is used for executing the billet feeding control method according to any one of claims 1-7.
9. The billet in furnace control system according to claim 8, wherein the billet in furnace transfer line further comprises a traverse chain (300), a lift drive mechanism, and a chain motor (320); the number of the transverse moving chains (300) is at least two, and all the transverse moving chains (300) are arranged on the conveying rollers close to the heating furnace (140); the lifting driving mechanism is connected with the transverse moving chain (300) and is used for driving the transverse moving chain (300) to lift or drop the steel billets on the conveying roller (300) onto the conveying roller; the chain motor (320) is connected with the traverse chain (300), and the chain motor (320) is used for driving the traverse chain (300) to drive.
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| WO2021063364A1 (en) * | 2019-09-30 | 2021-04-08 | 宝钢湛江钢铁有限公司 | High-efficiency double-frame double-cutting line feed-through intermediate thickness slab production line and production method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE1928732A1 (en) * | 1968-06-07 | 1969-12-11 | Westinghouse Electric Corp | Device for controlling a loading and unloading device for a furnace for heating slabs |
| CN102230067A (en) * | 2011-03-30 | 2011-11-02 | 北京首钢自动化信息技术有限公司 | Method for realizing accurate positioning of steel billet delivered into a heating furnace |
| CN102322803A (en) * | 2011-08-12 | 2012-01-18 | 中冶南方(武汉)威仕工业炉有限公司 | Steel blank length-measurement positioning system |
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