CN103952528B - Automatic steel charging locating system and method for heating furnace - Google Patents

Automatic steel charging locating system and method for heating furnace Download PDF

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Publication number
CN103952528B
CN103952528B CN201410155432.XA CN201410155432A CN103952528B CN 103952528 B CN103952528 B CN 103952528B CN 201410155432 A CN201410155432 A CN 201410155432A CN 103952528 B CN103952528 B CN 103952528B
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stove
transmitting
metal detector
heating furnace
speed
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CN103952528A (en
Inventor
李怡
惠秦川
王树松
曹迎新
亢晓嵘
李鹏飞
王斌
党星
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Polytron Technologies Inc in Beijing
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BEIJING BESTPOWER ELECTRICAL TECHNOLOGY Co Ltd
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Abstract

The invention discloses an automatic steel charging locating system and method for a heating furnace. The automatic steel charging locating system comprises an external furnace transmission device, an internal furnace transmission device, a drive device, a control device and a detection device, wherein the external furnace transmission device is arranged outside the heating furnace and near a fire door; the internal furnace transmission device is arranged inside the heating furnace and near the fire door; the drive device is arranged outside the heating furnace, and respectively connected with the internal furnace transmission device and the external furnace transmission device; the control device is arranged outside the heating furnace and connected with the drive device; the detection device comprises a first metal detector and a second metal detector; and the first metal detector and the second metal detector are arranged on the external furnace transmission device at an interval. The invention also discloses an automatic steel charging locating method for the heating furnace. By adopting the automatic steel charging locating system and method for the heating furnace provided by the invention, the accuracy and the reliability of the heating furnace for automatic steel charging can be improved.

Description

Heating furnace automatic steel loading alignment system and localization method
Technical field
The present invention relates to technical field of steel rolling, the automatic steel loading alignment system of more particularly, to a kind of heating furnace and localization method.
Background technology
Heating furnace is the tap of steel rolling production-line, and can heating furnace ensure safety, normal operation, realize comprehensively Automated job, heats and qualified steel billet, to whole rolling line can safely, continue, the carrying out of direct motion produces, suffer to pass Important decisive action.
In order to improve the automatization level of heating furnace, prior art is typically passed through stokehold cold metal detector and is added with being fixed on The positioning of steel billet realized by encoder on second hanging arm roll motor in hot stove.When steel billet afterbody passes through cold metal before heating furnace During detector, roller-way, by being reduced at a high speed medium speed, is counted now by encoder, extrapolates steel billet and reaches to specify and heats Stop the operation of roller-way, thus realizing the automatic steel loading of heating furnace during position.
The automatic steel loading method of the heating furnace of prior art, due to roller table speed Incomplete matching, and acceleration and deceleration process Velocity variations mismatch, and whole control process is not affiliated with same programmable logic controller (PLC)(PLC)And the communication bringing is prolonged When, and cause steel billet positioning inaccurate.
Meanwhile, the automatic steel loading method of the heating furnace of prior art, also the bending of invar base can skid, heats charging roller table Stop in advance;Encoder fixation is not firm and transmission amount that cause is actual with motor is not inconsistent;Steel billet weight characteristic is inconsistent to be made The slight difference of the inertia friction power becoming;Hypertelorism inside furnace wall for the stokehold cold metal detector and cannot judge that steel billet is No enter stove completely;The wear damage of encoder and cause equipotential error etc. former to thus result in steel billet positioning inaccurate.In addition, steel billet is fixed When position completes, if speed is excessive, deceleration distance is non-constant due to skidding.
Because environment temperature is high, roller-way vibration is big and abrasion is big, encoder easily damages, and changes relatively time consuming, is not having Having can be affected during spare part normally to produce.The error producing for the coast reducing final position fixing process, converter plant Deceleration time generally requires the very little adjusted to play braking action, causes braking resistor to damage too fast.
When the inaccurate situation of steel billet positioning occurs, for example steel billet is not completely in heating furnace or have sub-fraction Not completely into during to inside furnace wall, the auto-action of pusher or step rate, can cause equipment or heating furnace fire door The damage of furnace wall, and the generation of accident such as cause steel billet crooked and cannot come out of the stove.In addition, due also to bumper in heating-furnace Plate and the installation question of its limit switch, clash into signal still without feedback sometimes after steel billet clashes into cushioning fender, so that Steel billet ceaselessly clashes into cushioning fender and roller-way does not stop, and accordingly also easily causes the damage of equipment.
Therefore, how to improve the accuracy of the automatic steel loading of heating furnace and reliability just becomes problem demanding prompt solution.
Content of the invention
The present invention provides a kind of heating furnace automatic steel loading alignment system, and it includes:Transmission dress in the outer transmitting device of stove, stove Put, driving means, control device and detection means;The outer transmitting device of described stove is located at the outer close fire door of heating furnace, is used for Transmit outside the stove of steel billet;In described stove, transmitting device is located in heating furnace at fire door, for transmitting in the stove of steel billet;Described Driving means are located at outside heating furnace, and outer transmitting device is respectively connected with transmitting device in described stove and stove, for starting and Stop transmitting device and the outer transmitting device of stove in described stove;Described control device is located at outside heating furnace, and drives dress with described Put connected, for controlling the running speed of transmitting device and the outer transmitting device of stove in described stove;Wherein, described detection means bag Include the first metal detector and the second metal detector, this first metal detector and the second metal detector are arranged at intervals at institute State on the outer transmitting device of stove, for detecting the position of steel billet.
Further, described first metal detector is apart from 6.2 meters~6.8 meters of fire door;Described second metal detector away from 0.3 meter from fire door~0.7 meter.
Further, the outer transmitting device of described stove enters furnace roller road for one;In described stove, transmitting device is overhang roll in a stove Road;Described driving means are motor and driving equipment;Described control device is PLC.
Further, the automatic steel loading alignment system of described heating furnace also includes an encoder, and this encoder is arranged at and institute State in the driving means that transmitting device in stove is connected, and be connected with described control device, for calculate the movement of described steel billet away from From.
The present invention also provides another kind of heating furnace automatic steel loading alignment system, and it includes:Transmission in the outer transmitting device of stove, stove Device, driving means, control device and detection means;The outer transmitting device of described stove is located at the outer close fire door of heating furnace, uses Transmit outside the stove of steel billet;In described stove, transmitting device is located in heating furnace at fire door, for transmitting in the stove of steel billet;Institute State driving means to be located at outside heating furnace, and be respectively connected with transmitting device in described stove and the outer transmitting device of stove, for starting With transmitting device in the described stove of stopping and the outer transmitting device of stove;Described control device be located at heating furnace outside, and with described driving Device is connected, for controlling the running speed of transmitting device and the outer transmitting device of stove in described stove;Described detection means is by Two metal detector compositions, described second metal detector is arranged on the outer transmitting device of described stove, for detecting the position of steel billet Put, wherein, described second metal detector is apart from 0.3 meter~0.7 meter of fire door.
The present invention also provides a kind of heating furnace automatic steel loading localization method, comprises the following steps:
A () steel billet is placed on the outer transmitting device of stove, driving means start in stove transmits dress outside transmitting device and described stove Put, control device controls transmitting device in the outer transmitting device of described stove and stove all to operate with First Speed;
B (), when the first metal detector and the second metal detector have signal simultaneously, starts position fixing process;
C (), when the afterbody that described first metal detector detects described steel billet leaves, control device controls described stove In outer transmitting device and stove, transmitting device all reduces to second speed operating;And
D (), when the afterbody that described second metal detector detects described steel billet leaves, is stopped after delaying a Time constant Stop the operating of transmitting device in the outer transmitting device of described stove and stove.
Further, in step (a), described First Speed is 1.0 meter per second~1.4 meter per seconds.
Further, in step (c), described second speed is 0.2 meter per second~0.6 meter per second.
Further, in step (c), described Time constant is 3 seconds~4 seconds.
The present invention also provides another kind of heating furnace automatic steel loading localization method, comprises the following steps:
A () steel billet is placed on the outer transmitting device of stove, driving means start in stove transmits dress outside transmitting device and described stove Put, control device controls transmitting device in the outer transmitting device of described stove and stove all to operate with third speed;
B (), when the first metal detector and the second metal detector have signal simultaneously, starts position fixing process;
C (), when the afterbody that described first metal detector detects described steel billet leaves, control device controls described stove In outer transmitting device and stove, transmitting device all reduces to fourth speed operating;
D (), when the afterbody that described second metal detector detects described steel billet leaves, control device controls encoder Start and count;And
The relation of e displacement corresponding speed that () calculates according to described encoder, control device controls described stove unofficial biography The simultaneously even operating of slowing down of transmitting device in defeated device and stove, until stop.
Further, in step (a), described third speed is 1.3 meter per second~1.7 meter per seconds.
Further, in step (c), described fourth speed is 0.3 meter per second~0.7 meter per second.
Further, in step (e), the deceleration of described even operating of slowing down is less than or equal to 0.3 meter per second2.
The present invention also provides another kind of heating furnace automatic steel loading localization method, comprises the following steps:
A () steel billet is placed on the outer transmitting device of stove, driving means start in stove transmits dress outside transmitting device and described stove Put, control device controls transmitting device in the outer transmitting device of described stove and stove all to operate with First Speed;
B (), when the head that the second metal detector detects described steel billet reaches, delays one first Time constant, controls Device controls transmitting device in the outer transmitting device of described stove and stove all to reduce to second speed operating;And
C (), when the afterbody that described second metal detector detects described steel billet leaves, delays one second Time constant Stop the operating of transmitting device in the outer transmitting device of described stove and stove afterwards.
Further, in step (a), described First Speed is 1.0 meter per second~1.4 meter per seconds.
Further, in step (b), described first Time constant is 4.5 seconds~5.5 seconds;Described second speed is 0.2 Meter per second~0.6 meter per second.
Further, in step (c), described second Time constant is 3 seconds~4 seconds.
Compared with prior art, the present invention provide heating furnace automatic steel loading alignment system increased one from fire door closer to The second metal detector, and be shortened by orientation distance in heating furnace automatic steel loading localization method and using suitable deceleration The mode that degree carries out slope deceleration improves.It is shortened by orientation distance, position fixing process can add in most of entrance of steel billet Start after hot stove, it is to avoid transmitting device and the outer transmitting device speed of stove mismatches and skidding factor causes error in stove.Logical Cross the deceleration reducing in even moderating process, it is to avoid the error that steel billet skids and coast causes.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description are these Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, acceptable Other accompanying drawings are obtained according to these accompanying drawings.
The structural representation of the heating furnace automatic steel loading alignment system that Fig. 1 provides for the embodiment of the present invention one.
The schematic flow sheet of the heating furnace automatic steel loading localization method that Fig. 2 provides for the embodiment of the present invention two.
The structural representation of the heating furnace automatic steel loading alignment system that Fig. 3 provides for the embodiment of the present invention three.
The schematic flow sheet of the heating furnace automatic steel loading localization method that Fig. 4 provides for the embodiment of the present invention four.
The structural representation of the heating furnace automatic steel loading alignment system that Fig. 5 provides for the embodiment of the present invention five.
The schematic flow sheet of the heating furnace automatic steel loading localization method that Fig. 6 provides for the embodiment of the present invention six.
Main element symbol description
Heating furnace automatic steel loading alignment system 10,20,30
The outer transmitting device 101 of stove
Transmitting device 102 in stove
Driving means 103
Control device 104
Detection means 105
First metal detector 1051
Second metal detector 1052
Encoder 106
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached in the embodiment of the present invention Figure, is clearly and completely described to the technical scheme in the embodiment of the present invention it is clear that described embodiment is the present invention A part of embodiment, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having The every other embodiment being obtained under the premise of making creative work, broadly falls into the scope of protection of the invention.
Embodiment one
As shown in figure 1, the embodiment of the present invention one provides a kind of heating furnace automatic steel loading alignment system 10, this heating furnace is automatic Steel loading alignment system 10 includes:Transmitting device 102 in the outer transmitting device 101 of stove, stove, driving means 103, control device 104 with And detection means 105.
The outer transmitting device 101 of described stove is located at the outer close fire door of heating furnace, for transmitting outside the stove of steel billet, i.e. this stove Outer transmitting device 101 is responsible at the fire door of described steel billet conveying to heating furnace.The type of the outer transmitting device 101 of described stove is not Limit, as long as enable above-mentioned functions.Preferably, in the present embodiment, the outer transmitting device 101 of described stove enters furnace roller road for one, This enters furnace roller road and includes multiple rollers be arrangeding in parallel, and each roller is respectively connected with driving means 103, by this driving means 103 Control the startup/stopping of each roller.Described enter furnace roller road size can be selected according to actual needs and be adjusted.
In described stove, transmitting device 102 is located in heating furnace at fire door, for transmitting in the stove of steel billet, i.e. this stove At the responsible position that will specify in described steel billet conveying to heating furnace of interior transmitting device 102.Similarly, transmitting device in described stove 102 type does not limit, as long as enabling above-mentioned functions.Preferably, in the present embodiment, in described stove, transmitting device 102 is Hanging arm roll in one stove, in this stove, hanging arm roll includes multiple rollers be arrangeding in parallel, and each roller is respectively connected with driving means 103, controlled the startup/stopping of each roller by this driving means 103.In described stove, the size of hanging arm roll can be according to actual need Selected and adjusted.
Described driving means 103 are located at outside heating furnace, and the outer transmitting device with transmitting device 102 in described stove and stove 101 are respectively connected with, for starting and stopping transmitting device 102 and the outer transmitting device 101 of stove in described stove.Preferably, described Driving means 103 include multiple motors and its driving equipment, and in the present embodiment, described motor is variable-frequency motor, and described driving sets Standby for frequency converter.
Described control device 104 is located at outside heating furnace, and is connected with described driving means 103, for controlling in described stove Transmitting device 102 and the running speed of the outer transmitting device 101 of stove.When described driving means 103 include variable-frequency motor and frequency conversion During device, described control device 104 is joined directly together with the frequency converter in described driving means 103, for controlling variable-frequency motor.This reality Apply in example, described control device 104 is a PLC, the running speed of transmitting device 102 and the outer transmitting device 101 of stove in described stove All by this PLC programming Control, and can be realized by the running speed controlling variable-frequency motor.
Described detection means 105 includes the first metal detector 1051 and the second metal detector 1052, this first metal Detector 1051 and the second metal detector 1052 are arranged at intervals on the outer transmitting device 101 of described stove, for detecting steel billet Position.In the present embodiment, described first metal detector 1051 and the second metal detector 1052 are former using laser reflection The detector that science and engineering is made.This first metal detector 1051 and the second metal detector 1052 all can detect the metals such as steel billet Enter and leave.
Described first metal detector 1051 is arranged on apart from fire door place farther out it is preferable that this first metal detection Device 1051 is arranged on the position apart from 6.2 meters~6.8 meters of fire door, and in the present embodiment, this first metal detector 1051 is arranged on At 6.5 meters of fire door.
Described second metal detector 1052 is arranged on apart from the nearer place of fire door it is preferable that this second metal detection Device 1052 is arranged on the position apart from 0.3 meter~0.7 meter of fire door, and in the present embodiment, this second metal detector 1052 is arranged on At 0.5 meter of fire door.When this second metal detector 1052 is arranged at apart from 0.3~0.7 meter of fire door, can increase further Plus detection and the accuracy positioning or accuracy.In order to reduce the impact of high temperature at fire door, extend described second metal further The service life of detector 1052, can install a heat abstractor additional on this second metal detector 1052 surface.
The heating furnace automatic steel loading alignment system that the embodiment of the present invention one provides, eliminates the use of encoder, increased Second metal detector, shortens orientation distance, thus improve the accuracy of steel billet positioning, also improves security.
Embodiment two
As shown in Fig. 2 the embodiment of the present invention two provides a kind of heating furnace automatic steel loading localization method, this localization method utilizes The heating furnace automatic steel loading alignment system 10 that above-described embodiment one provides, this localization method specifically includes following steps:
A () steel billet is placed on the outer transmitting device 101 of described stove, described driving means 103 start transmission dress in described stove Put 102 and the outer transmitting device 101 of stove, described control device 104 controls transmitting device in the outer transmitting device 101 of described stove and stove 102 are all operated with First Speed;
B (), when described first metal detector 1051 and the second metal detector 1052 have signal simultaneously, starts positioning Process;
(c) when the afterbody that described first metal detector 1051 detects described steel billet leaves, described control device 103 Transmitting device 102 in the outer transmitting device 101 of described stove and stove is controlled all to reduce to second speed operating;And
D (), when the afterbody that described second metal detector 1052 detects described steel billet leaves, delays a Time constant Stop the operating of transmitting device 102 in the outer transmitting device 101 of described stove and stove afterwards.
In step (a), described First Speed be 1.0 meter per second~1.4 meter per seconds it is preferable that in the present embodiment, described first Speed is 1.2 meter per seconds.That is, the outer transmitting device 101 of described stove with the speed of 1.2 meter per seconds by described steel billet toward heating furnace fire door Place's transmission.
In step (b), when described first metal detector 1051 and the second metal detector 1052 have signal simultaneously, i.e. institute State the second metal detector 1052 and the arrival of steel billet head is detected, described first metal detector 1051 has detected steel billet simultaneously During signal, this equal normal work of two metal detectors is described, so starting position fixing process.If before position fixing process starts, only There is a metal detector signal is detected, then illustrate that another metal detector breaks down, then should stop steel loading mistake immediately Journey simultaneously plays a protective role.
In step (c), described second speed be 0.2 meter per second~0.6 meter per second it is preferable that in the present embodiment, described second Speed is 0.4 meter per second.That is, when the afterbody that described first metal detector 1051 detects described steel billet leaves, outside described stove Described steel billet is continued transmission toward at the fire door of heating furnace and in fire door by the speed that transmitting device 101 reduces to 0.4 meter per second.
In step (d), the optimum value that described Time constant can be tested repeatedly according to scene, or with orientation distance divided by speed Degree calculates.Preferably, described Time constant is 3 seconds~4 seconds.In the present embodiment, described Time constant is 3.5 seconds.
After the completion of step (d), whole position fixing process terminates.Wherein, described Time constant can immobilize for 3.5 seconds, Because while the length of steel billet is slightly different, but steel billet orientation distance shortens, the error very little of generation.
Greatly increase the automatic steel loading locating accuracy of steel billet using the localization method of the present embodiment two, it is fixed to decrease Position error.
Embodiment three
As shown in figure 3, the embodiment of the present invention three provides another kind of heating furnace automatic steel loading alignment system 20, with embodiment one The heating furnace automatic steel loading alignment system 10 providing is identical, and this heating furnace automatic steel loading alignment system 20 also includes:Transmit outside stove Transmitting device 102, driving means 103, control device 104 and detection means 105 in device 101, stove, and above-mentioned each device it Between position relationship and annexation also all with identical in heating furnace automatic steel loading alignment system 10.With described heating furnace certainly Unlike dynamic steel loading alignment system 10, this heating furnace automatic steel loading alignment system 20 also includes an encoder 106.
This encoder 106 is located at outside stove, is arranged in the driving means 103 being connected with transmitting device 102 in described stove, and It is connected with described control device 104, for calculating the displacement of described steel billet.Preferably, described encoder 106 be fixed on The variable-frequency motor afterbody that in stove, second hanging arm roll is connected.
It is larger that the heating furnace automatic steel loading alignment system that the embodiment of the present invention three provides is particularly well-suited to steel billet difference in length, Or it is frequently necessary to load short blank and carries out the positioning of right-justifying that keeps left, or need more reliable when being faster accurately positioned Situation.Separately, increased the use of encoder 106, the First Speed in position fixing process and second speed can be properly increased.
Example IV
As shown in figure 3, the embodiment of the present invention four provides a kind of heating furnace automatic steel loading localization method, this localization method utilizes The heating furnace automatic steel loading alignment system 20 that above-described embodiment three provides, this localization method specifically includes following steps:
A () steel billet is placed on the outer transmitting device 101 of described stove, described driving means 103 start transmission dress in described stove Put 102 and the outer transmitting device 101 of stove, described control device 104 controls transmitting device in the outer transmitting device 101 of described stove and stove 102 are all operated with third speed;
B (), when described first metal detector 1051 and the second metal detector 1052 have signal simultaneously, starts positioning Process;
(c) when the afterbody that described first metal detector 1051 detects described steel billet leaves, described control device 104 Transmitting device 102 in the outer transmitting device 101 of described stove and stove is controlled all to reduce to fourth speed operating;
(d) when the afterbody that described second metal detector 1052 detects described steel billet leaves, described control device 104 Control described encoder 106 to start to count;And
The relation of e displacement corresponding speed that () calculates according to described encoder 106, described control device 104 controls The simultaneously even operating of slowing down of transmitting device 102 in the outer transmitting device 101 of described stove and stove, until stop.
In step (a), described third speed be 1.3 meter per second~1.7 meter per seconds it is preferable that in the present embodiment, the described 3rd Speed is 1.5 meter per seconds.That is, the outer transmitting device 101 of described stove with the speed of 1.5 meter per seconds by described steel billet toward heating furnace fire door Place's transmission.
In step (b), as embodiment two, when only one metal detector detects the signal of steel billet, then should stand Stop steel loading process and play a protective role.
In step (c), described fourth speed be 0.3 meter per second~0.7 meter per second it is preferable that in the present embodiment, the described 4th Speed is 0.5 meter per second.That is, when the afterbody that described first metal detector 1051 detects described steel billet leaves, outside described stove Described steel billet is continued transmission toward at the fire door of heating furnace and in fire door by the speed that transmitting device 101 reduces to 0.5 meter per second.
In step (e), the deceleration of described even operating of slowing down is less than or equal to -0.3 meter per second 2, i.e. the outer transmitting device of described stove 101 and stove in transmitting device 102 reduce to acceleration deceleration-based controller when speed is zero in -0.3 meter per second from described fourth speed Less than 2, to prevent steel billet from skidding or coast in this moderating process.The occurrence of the deceleration of described even operating of slowing down can Parameter determination and the adjustment such as the displacement of the steel billet being calculated according to described encoder 106, corresponding speed, initial velocity.
Certainly, in step (e), in the outer transmitting device 101 of described stove and stove, transmitting device 102 can also first keep described Fourth speed uniform motion one segment distance(The distance of uniform motion counter can be calculated according to the distance that even moderating process needs Draw), then restart even moderating process, speed be reduced to zero from described fourth speed.
In the heating furnace automatic steel loading localization method that the present embodiment four provides, frequency converter in described driving means 103 Deceleration time can be located at more than 2 seconds or normal value, and moderating process passes through programme-control completely, thus reducing moderating process Loss to braking resistor.The localization method that the present embodiment four provides, described first metal detector 1051, the second metal detection The use of device 1052 matching coding device 106, is provided that more accurate steel billet positioning.
Embodiment five
As shown in figure 5, the embodiment of the present invention five provides another kind of heating furnace automatic steel loading alignment system 30, with embodiment one The heating furnace automatic steel loading alignment system 10 providing is identical, and this heating furnace automatic steel loading alignment system 30 also includes:Transmit outside stove Transmitting device 102, driving means 103, control device 104 and detection means 105 in device 101, stove, and above-mentioned each device it Between position relationship and annexation also all with identical in heating furnace automatic steel loading alignment system 10.With described heating furnace certainly Unlike dynamic steel loading alignment system 10, the detection means 105 of this heating furnace automatic steel loading alignment system 30 is only by the second metal Detector 1052 forms, i.e. the heating furnace automatic steel loading alignment system 30 that the present embodiment five provides eliminates described first metal The use of detector 1051.
Described second metal detector 1052 is arranged on apart from the nearer place of fire door it is preferable that this second metal detection Device 1052 is arranged on the position apart from 0.3 meter~0.7 meter of fire door, and in the present embodiment, this second metal detector 1052 is arranged on At 0.5 meter of fire door.Similar with embodiment one, in the present embodiment, also can be on this second metal detector 1052 surface Install a heat abstractor additional, to reduce the temperature of this second metal detector 1052, extend its service life.
The heating furnace automatic steel loading alignment system 10 providing with respect to embodiment one, the heating that the embodiment of the present invention five provides Stove automatic steel loading alignment system 30 can simplify structure with reduces cost while ensureing the accuracy of steel billet positioning.
Embodiment six
As shown in fig. 6, the embodiment of the present invention six provides another kind of heating furnace automatic steel loading localization method, this localization method profit The heating furnace automatic steel loading alignment system 30 being provided with above-described embodiment five, this localization method specifically includes following steps:
A () steel billet is placed on the outer transmitting device 101 of described stove, described driving means 103 start transmission dress in described stove Put 102 and the outer transmitting device 101 of stove, described control device 104 controls transmitting device in the outer transmitting device 101 of described stove and stove 102 are all operated with First Speed;
B (), when the head that described second metal detector 1052 detects described steel billet reaches, delays one first constant After time, described control device 104 controls transmitting device 102 in the outer transmitting device 101 of described stove and stove all to reduce to second speed Operating;And
C (), when the afterbody that the second metal detector 1052 detects described steel billet leaves, delays one second Time constant Afterwards, stop the operating that transmission outside described stove fills transmitting device 102 in 101 and stove.
In step (a), described First Speed be 1.0 meter per second~1.4 meter per seconds it is preferable that in the present embodiment, described first Speed is 1.2 meter per seconds.That is, the outer transmitting device 101 of described stove with the speed of 1.2 meter per seconds by described steel billet toward heating furnace fire door Place's transmission.
In step (b), described first Time constant can be adjusted according to scene needs, or comes according to the length of steel billet Calculate the time needing time delay.Preferably, described first Time constant is 4.5 seconds~5.5 seconds.In the present embodiment, described first Time constant is 5 seconds.
In step (b), described second speed be 0.2 meter per second~0.6 meter per second it is preferable that in the present embodiment, described second Speed is 0.4 meter per second.That is, when the head that described second metal detector 1052 detects described steel billet reaches, delay one the After one Time constant, described steel billet is continued the stove toward heating furnace by the speed that the outer transmitting device 101 of described stove reduces to 0.4 meter per second Transmit at door and in fire door.
In step (c), the optimum value that described second Time constant can be tested repeatedly according to scene, or removed with orientation distance Calculated with speed.Preferably, described second Time constant is 3 seconds~4 seconds.In the present embodiment, described Time constant is 3.5 Second.
Finally it should be noted that:Above example only in order to technical scheme to be described, is not intended to limit;Although With reference to the foregoing embodiments the present invention is described in detail, it will be understood by those within the art that:It still may be used To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to wherein some technical characteristics; And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and Scope.

Claims (3)

1. the automatic steel loading alignment system of a kind of heating furnace, including:Transmitting device, driving means, control in the outer transmitting device of stove, stove Device and detection means;The outer transmitting device of described stove is located at the outer close fire door of heating furnace, for transmitting outside the stove of steel billet;Institute State transmitting device in stove and be located in heating furnace at fire door, for transmitting in the stove of steel billet;Described driving means are located at heating Outside stove, and it is respectively connected with transmitting device in described stove and the outer transmitting device of stove, for starting and stopping transmission in described stove Device and the outer transmitting device of stove;Described control device is located at outside heating furnace, and is connected with described driving means, for controlling The running speed stating transmitting device and the outer transmitting device of stove in stove is it is characterised in that described detection means includes the first metal Detector and the second metal detector, this first metal detector and the second metal detector are arranged at intervals at transmission outside described stove On device, for detecting the position of steel billet, described first metal detector is apart from 6.2 meters~6.8 meters of fire door;Described second metal 0.3 meter~0.7 meter of detector distance fire door, its surface installs heat abstractor additional;
The outer transmitting device of described stove enters furnace roller road for one;In described stove, transmitting device is hanging arm roll in a stove;Described driving fills It is set to motor and driving equipment;Described control device is PLC;
Further include an encoder, this encoder is arranged in the driving means being connected with transmitting device in described stove, and with Described control device is connected, for calculating the displacement of described steel billet.
2. a kind of heating furnace automatic steel loading localization method based on the automatic steel loading alignment system of heating furnace described in claim 1, bag Include following steps:
A () steel billet is placed on the outer transmitting device of stove, driving means start transmitting device and the outer transmitting device of described stove, control in stove Device processed controls transmitting device in the outer transmitting device of described stove and stove all to operate with First Speed;
B (), when the first metal detector and the second metal detector have signal simultaneously, starts position fixing process;
C (), when the afterbody that the first metal detector detects described steel billet leaves, transmits dress outside the control device described stove of control Put and all reduce to second speed operating with transmitting device in stove;And
D (), when the afterbody that the second metal detector detects described steel billet leaves, stops described stove after delaying a Time constant The operating of transmitting device in outer transmitting device and stove;
Described Time constant is 3 seconds~4 seconds;
Described First Speed is 1.0 meter per second~1.4 meter per seconds;Described second speed is 0.2 meter per second~0.6 meter per second.
3. a kind of heating furnace automatic steel loading localization method based on the automatic steel loading alignment system of heating furnace described in claim 1, bag Include following steps:
A () steel billet is placed on the outer transmitting device of stove, driving means start transmitting device and the outer transmitting device of described stove, control in stove Device processed controls transmitting device in the outer transmitting device of described stove and stove all to operate with third speed;
B (), when the first metal detector and the second metal detector have signal simultaneously, starts position fixing process;
C (), when the afterbody that the first metal detector detects described steel billet leaves, transmits dress outside the control device described stove of control Put and all reduce to fourth speed operating with transmitting device in stove;
D (), when the afterbody that the second metal detector detects described steel billet leaves, control device controls encoder to start counting; And
The relation of e displacement corresponding speed that () calculates according to described encoder, transmits dress outside the control device described stove of control Put slow down operating simultaneously even with transmitting device in stove, until stopping;
Described third speed is 1.3 meter per second~1.7 meter per seconds;Described fourth speed is 0.3 meter per second~0.7 meter per second;
The deceleration of described even operating of slowing down is less than or equal to 0.3 meter per second2.
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CN104181852B (en) * 2014-08-22 2017-02-15 重庆钢铁集团电子有限责任公司 Automatic steel loading control method of heat accumulating type stepping heating furnace
CN105695726B (en) * 2014-11-27 2017-08-25 宝山钢铁股份有限公司 The roller table speed closed loop control method of on-line continuous induction furnace
CN106766934B (en) * 2016-12-08 2019-03-01 重庆钢铁集团电子有限责任公司 The automatic steel loading control system of heating furnace and method
CN107185977B (en) * 2017-07-07 2019-01-29 山东钢铁集团日照有限公司 A kind of more furnaces based on electric signal load in mixture plan coalignment and method
CN109855425B (en) * 2019-01-28 2020-09-11 安徽大学 Walking beam heating furnace transmission feeding device and method
CN110986611A (en) * 2019-12-24 2020-04-10 江苏永钢集团有限公司 Method and device for measuring length of blank fed into steel rolling heating furnace and alarming

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