CN105202927A - Safe control method for preventing sudden failure of steel charging motor brake of plate blank heating furnace - Google Patents
Safe control method for preventing sudden failure of steel charging motor brake of plate blank heating furnace Download PDFInfo
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- CN105202927A CN105202927A CN201410263999.9A CN201410263999A CN105202927A CN 105202927 A CN105202927 A CN 105202927A CN 201410263999 A CN201410263999 A CN 201410263999A CN 105202927 A CN105202927 A CN 105202927A
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- fire door
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- machine translation
- type brake
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Abstract
The invention discloses a safe control method for preventing sudden failure of a steel charging motor brake of a plate blank heating furnace. The method comprises the steps that no advance starting instruction of a steel charging machine is made to exist, and the speed of the steel charging machine is set at zero; a free sliding displacement judging function of a horizontal moving arm of the steel charging machine is made to be valid; whether an abnormal distance S1 exists in sliding of the horizontal moving arm of the steel charging machine is detected by a coder; if yes, whether the sliding distance S1 of the horizontal moving arm of the steel charging machine meets S0<=S1<=(L3-S2) is judged, wherein S0 refers to the horizontal moving and brake straight deviation of the steel charging machine, L3 refers to the distance between a furnace door and the front end of the horizontal moving arm of the steel charging machine, and S2 refers to the sliding distance of the horizontal moving arm of the steel charging machine while the furnace door is opened; if yes, an human-machine interface (HMI) warns that the horizontal moving brake of the steel charging machine is invalid and sends an automatic charging furnace door opening instruction; a charging furnace door is automatically opened through winding equipment. According to the method, the mechanical structures, such as the charging and discharging furnace doors and a reduction box of the steel charging machine, of the heating furnace can be effectively prevented from being damaged, and the production efficiency and safety are improved.
Description
Technical field
The present invention relates to a kind of automation control method, relate to a kind of bar plate heating stove automation control method specifically.
Background technology
Heating furnace dress steel machine is requisite key equipment on current rolling mill furnace both at home and abroad.Heating furnace dress steel machine site layout project as shown in Figure 1.Wherein, what dress steel machine 2 was positioned at heating furnace 1 enters furnace side (diagram left side), for by furnace charging table 4 slab (as diagram, slab 1, slab 2 ... slab n) hold up and be placed on reposefully in heating furnace 1.Extractor 3 is the tapping sides (diagram right side) being arranged in walking-beam furnace and heating furnace 1, for being held out by the slab heated in heating furnace 1 and being placed on the device on furnace delivery table 5 reposefully.
Heating furnace dress steel machine comprises transmission mechanism, herringbone gear and dress steel machine translation arms parts, and as shown in Figure 2, wherein, drive mechanism comprises translation mechanism and elevating mechanism to concrete structure; The tooth bar (be positioned at dress steel machine translation arms 2a bottom) that translation mechanism comprises ac variable-frequency electric motor 2d, brake 6 i.e. contracting brake mechanism (Fig. 3), gear cabinet (cylinder gear speed reducer) 2c, gear shaft etc. drive and transmission base (sign); The drive path of translation mechanism is: the action of dress steel machine translation arms 2a forward-backward adopts ac variable-frequency electric motor 2d-brake 6 (Fig. 3)-gear cabinet (cylinder gear speed reducer) 2c-gear shaft etc. to drive the tooth bar 2f of dress steel machine translation arms 2a bottom.Transmission base is weldment.Elevating mechanism comprises ac variable-frequency electric motor 2d ', brake 6 ', reduction box (sign) crank connecting link 2g, dress steel machine lifting pressure pin 7; The drive path of elevating mechanism is: motor 2d '-brake 6 '-reduction box-crank connecting link 2g makes dress steel machine translation arms 2a rise or declines.Herringbone gear comprises the casing of segmentation, bearing and bearing block, gear shaft, axle sleeve, pressure roller and is arranged on the roller (not shown) at gear shaft two ends.Wherein, casing is weldment, and a pair pressure roller is arranged on casing top, freely topples in vertical plane in order to restriction dress steel machine translation arms, and ensure the correct engagement of the rack and pinion axle of dress steel machine translation arms bottom, the rotary motion of motor is become the rectilinear movement of dress steel machine translation arms.Dress steel machine translation arms 2a is smithwelding steel construction, and tooth bar is forging, is fixed on dress steel machine translation arms bottom.The head of dress steel machine translation arms is provided with cushion block 2b ' and the 2b that cuts somebody's hair.The concrete layout of dress steel machine as shown in Figure 3, Figure 4.
But in actual production, dress steel machine 2 controls (incremental encoder 2e carries out the stroke detection of dress steel) chain condition according to normal logic, dress steel machine 2 advances, and with charging fire door 1c there is certain interlocked relationship in half-open or fully open position to run action, its main purpose be in order to prevent in dress steel process or operate miss time slab or dress steel machine translation arms 2a knock fire door; And the translation of heating furnace dress steel machine 2 and the brake 6,6 ' of elevating mechanism are all have employed the electronic contracting brake mechanism of external, it comprises band-type brake wheel hub 6a
1, 6a '
1with band-type brake sheet 6a
2, 6a '
2, as shown in Figure 5.In electrical control, when brake 6 controlled condition meets, band-type brake obtain electric after start to open, with fashionable dress steel machine 2 according to certain speed given driving dress steel machine translation arms 2a action, and locate according to target location.Fill steel machine 2 after arriving target location out of service, after band-type brake dead electricity, implement closing motion.But, when translation external brake 6 burst inefficacy release after dead electricity is closed of heating furnace dress steel machine 2, because dress steel machine translation arms 2a forward part is near the weight taking on material road reveal is large and support wheel wearing and tearing cause arm to there is certain oblique angle that dips down, as shown in Figure 7, dress steel machine translation arms can be caused to slide in stove voluntarily when filling steel machine and being the next, and speed is very fast, and now fills discharging door and be bound to be knocked down in off position, cause the damage such as fire door and dress steel machine speed reduction gear box; If fire door is damaged, take time and effort during examine and replace.When filling steel machine translation band-type brake adjustment or maintenance, normally adopting and by oven door opening or with supporter, band-type brake wheel hub being propped up.Open for a long time can cause energy waste due to fire door, and dress steel machine origin position is lost and also can be had influence on other heating furnaces and normally produce.And in dress steel machine translation band-type brake repairing Renewal process, the dangerous Zhao accident of not I'm glad to meet you generation, band-type brake hub support thing touches off by maintainer accidentally, and dress steel machine translation arms quick sliding rushes at fire door, with regard to inevitable, shock accident occurs as prevented not in time.
Summary of the invention
The object of this invention is to provide a kind of method of controlling security preventing bar plate heating stove from filling steel motor band-type brake burst inefficacy, effectively can prevent heating furnace from filling the bulk mechanical structural failure such as the reduction box of discharging door and dress steel machine, improve the efficiency and security of producing.
The method of controlling security preventing bar plate heating stove from filling steel motor band-type brake burst inefficacy of the present invention, comprising:
Make dress steel machine without advance enabled instruction and speed preset is zero;
Make dress steel machine translation arms art skating displacement arbitration functions effective;
Detect dress steel machine translation arms by encoder and slide whether there is abnormal distance S1; In this way, then
Judge whether the coasting distance S1 filling steel translation arms meets S0≤S1≤(L3-S2), wherein, dress steel machine translation and band-type brake running deviation value S0, L3 are fire door and the distance filling steel machine translation arms front end, and S2 is the same fashionable dress steel machine translation arms coasting distance in oven door opening; In this way, then:
The upper dress steel machine translation band-type brake of reporting to the police of man-machine interface (HMI) lost efficacy, and sent the automatic OPEN of charging fire door;
By hoisting equipment, charging fire door is opened automatically.
Heating furnace charging fire door adopts the reducing motor of band inside brake to drive hoisting equipment to realize lifting and the decline of fire door.
Hoisting equipment comprises chain, elevator sprocket wheel, and fire door is directly hung on elevator sprocket wheel by chain, and the rotation with sprocket wheel realizes lifting and the decline of fire door.
Counterweight is hung with, in order to balance the quality of fire door with the direction of fire door symmetry.
The coasting distance S1 of dress steel translation arms does not bump against charging fire door when being dress steel machine translation arms art skating after making the stroke of the same fashion material oven door opening of dress steel machine translation arms art skating guarantee band-type brake inefficacy.
Method of controlling security of the present invention is by judging that the burst of dress steel motor band-type brake cannot brake rear dress steel machine translation arms art skating real-time displacement, optimize fire door, the action interlock logic relation of dress steel machine, the situation of clashing into fire door after preventing filling steel motor band-type brake burst inefficacy release occurs, thus dress steel machine pressure pin art skating knocks fire door after avoiding dress steel motor band-type brake burst inefficacy release, the body such as fire door and dress steel machine reduction box is caused to damage, serve safety protection function, bump against due to dress steel machine and fire door can be avoided, effectively prevent heating furnace from filling the bulk mechanical structural failure such as the reduction box of discharging door and dress steel machine, improve the efficiency and security of producing.The present invention is simple and easy to do, and reliability is high.
Accompanying drawing explanation
Fig. 1 is heating furnace dress steel machine site layout project schematic diagram
Fig. 2 is heating furnace dress steel machine, heating furnace comprises charging fire door and body of heater site layout project structure schematic top plan view
Fig. 3 is heating furnace dress steel machine drive mechanism side schematic view;
Fig. 4 is dress steel machine translation arms, charging fire door relative position schematic diagram;
Fig. 5 is the contracting brake mechanism site layout project schematic diagram of heating furnace dress steel machine translation and elevating mechanism;
Fig. 6 is that the bar plate heating stove that prevents of one embodiment of the invention fills the electrical control flow chart of the method for controlling security that the burst of steel motor band-type brake was lost efficacy;
Fig. 7 is the inclination angle schematic diagram that dress steel machine translation arms exists.
Detailed description of the invention
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.First it should be noted that, the present invention is not limited to following detailed description of the invention, and the spirit that those skilled in the art should embody from following embodiment is to understand the present invention, and each technical term can do the most wide in range understanding based on Spirit Essence of the present invention.Reference numeral identical in the accompanying drawings represents identical part.
The method of controlling security preventing bar plate heating stove from filling steel motor band-type brake burst inefficacy of the present invention, its flow process as shown in Figure 6, comprising:
Make dress steel machine 2 without advance enabled instruction and speed preset is zero;
Make dress steel machine translation arms 2a art skating displacement arbitration functions effective;
Detect dress steel machine translation arms 2a by encoder 2e and slide whether there is abnormal distance S1, in this way, then
Judge whether the coasting distance S1 filling steel translation arms 2a meets S0≤S1≤(L3-S2), in this way, then:
The upper dress steel machine translation band-type brake 6 of reporting to the police of man-machine interface (HMI) lost efficacy, and sent the automatic OPEN of charging fire door 1c;
Charging fire door 1c is opened automatically;
Wherein, dress steel machine translation and band-type brake running deviation value S0, L3 are fire door and the distance filling steel machine translation arms front end, and S2 is the same fashionable dress steel machine translation arms coasting distance in oven door opening.
Further illustrate above-described embodiment below by way of embody rule example, understand the features and advantages of the invention so that clearer.
Slab portion heating furnace charging fire door 1c adopts the reducing motor (sign) of band inside brake to drive hoisting equipment to realize lifting and the decline of fire door 1c, its concrete structure is that fire door 1 uses 1 chain directly to hang on 1 sprocket wheel M of elevator, and the rotation with sprocket wheel M realizes lifting and the decline of fire door 1c.Be hung with counterweight 8 with the direction of fire door 1c symmetry, as shown in Figure 4, in order to balance the quality of fire door 1c, make its fire door stable action and reduce power consumption.
The lifting travel L2 of charging fire door is 2.5m, rising or falling speed is 0.2m/s, find out from Fig. 4, the same fashion material fire door 1c of dress steel machine translation arms 2a art skating will be opened to certain stroke, just can guarantee not bump against charging fire door 1c when filling steel machine translation arms 2a art skating after band-type brake 6 lost efficacy.
Arrange according to the dress steel machine translation arms 2a of slab heating furnace and the field position of charging fire door 1c, as shown in Figure 4, the height L1 of dress steel machine translation arms 2a is 90mm, and the safety travel L2 that charging fire door 1c opens is more than or equal to 1200mm.Again because fire door adopts constant speed motor to drive, its rising or falling speed is 0.2m/s=200mm/s.Therefore feed fire door T=L/V=1200mm/200mm/s=6 actuation time second, there is certain oblique angle that dips down through on-site measurement dress steel translation arms 2a and be about θ=3 °, as shown in Figure 7.Accelerate to glide (known inclination angle of inclined plane θ) along smooth bevel according to thing block, acceleration a=(mgsin θ-umgcos θ)/m=gsin θ-ugcos θ, consider to slide u=0 under ideal conditions simultaneously, i.e. a=gsin θ, so, be S2=1/2aT at the same fashionable dress steel machine translation arms 2a coasting distance of oven door opening
2=1/2X9.8m/sXsin3 ° of X (6s)
2=1.54m=1540mm; Dress steel machine translation arms distance charging fire door L3=1700mm, in addition, when normally producing, the span of this type of dress steel machine translation and band-type brake running deviation value S0: 5mm≤S0≤20mm.S0 capping, so, dress steel machine translation arms 2a starts oven door opening action before sliding scope 20mm≤S1≤(the L3-S2)=1700mm-1540mm=160mm of abnormal distance S1, and after can guaranteeing the inefficacy of dress steel machine band-type brake, translation arms can not knock fire door.
The Detection theory device of control technology of the present invention and the measurement of partial parameters: dress steel machine 2 is driven by variable-frequency motor 6,6 '; The real-time displacement that dress steel machine 2 slides is realized by the incremental encoder 2e be arranged on variable-frequency motor output shaft, has control accuracy high, reliable and stable.
In sum, method of the present invention is by judging that the burst of dress steel motor band-type brake cannot brake rear dress steel machine translation arms art skating real-time displacement, optimize the action interlock logic relation of fire door, dress steel machine, the situation of clashing into fire door after can preventing filling steel motor band-type brake burst inefficacy release occurs, thus avoid the dress steel motor band-type brake burst dress steel machine pressure pin art skating after release that lost efficacy and knock fire door and cause the accident of device damage to occur, improve efficiency and the security of production.The present invention is simple and easy to do, and reliability is high.
Should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after having read above-mentioned instruction content of the present invention.
Claims (5)
1. prevent bar plate heating stove from filling a method of controlling security for steel motor band-type brake burst inefficacy, it is characterized in that, comprising:
Make dress steel machine without advance enabled instruction and speed preset is zero;
Make dress steel machine translation arms art skating displacement arbitration functions effective;
Detect dress steel machine translation arms by encoder and slide whether there is abnormal distance S1; In this way, then
Judge whether the coasting distance S1 filling steel translation arms meets S0≤S1≤(L3-S2), wherein, dress steel machine translation and band-type brake running deviation value S0, L3 are fire door and the distance filling steel machine translation arms front end, and S2 is the same fashionable dress steel machine translation arms coasting distance in oven door opening; In this way, then:
Dress steel machine translation band-type brake that man-machine interface is reported to the police lost efficacy, and sent the automatic OPEN of charging fire door;
By hoisting equipment, charging fire door is opened automatically.
2. the method for controlling security preventing bar plate heating stove from filling steel motor band-type brake burst inefficacy according to claim 1, is characterized in that, hoisting equipment is by adopting the reducing motor of band inside brake to drive with the lifting and the decline that realize fire door.
3. the method for controlling security preventing bar plate heating stove from filling steel motor band-type brake burst inefficacy according to claim 1 and 2, it is characterized in that, the coasting distance S1 of described dress steel translation arms is the stroke of the same fashion material oven door opening making dress steel machine translation arms art skating, to guarantee not bump against charging fire door when filling steel machine translation arms art skating after band-type brake lost efficacy.
4. the method for controlling security preventing bar plate heating stove from filling steel motor band-type brake burst inefficacy according to claim 1 and 2, it is characterized in that, hoisting equipment comprises chain, elevator sprocket wheel, and fire door is directly hung on elevator sprocket wheel by chain, and the rotation with sprocket wheel realizes lifting and the decline of fire door.
5. the method for controlling security preventing bar plate heating stove from filling steel motor band-type brake burst inefficacy according to claim 4, is characterized in that, be hung with counterweight with the direction of fire door symmetry, in order to balance the quality of fire door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410263999.9A CN105202927B (en) | 2014-06-13 | 2014-06-13 | Prevent the method for controlling security of bar plate heating stove steel loading motor internal contracting brake burst failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410263999.9A CN105202927B (en) | 2014-06-13 | 2014-06-13 | Prevent the method for controlling security of bar plate heating stove steel loading motor internal contracting brake burst failure |
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| Publication Number | Publication Date |
|---|---|
| CN105202927A true CN105202927A (en) | 2015-12-30 |
| CN105202927B CN105202927B (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410263999.9A Active CN105202927B (en) | 2014-06-13 | 2014-06-13 | Prevent the method for controlling security of bar plate heating stove steel loading motor internal contracting brake burst failure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112113433A (en) * | 2019-06-20 | 2020-12-22 | 宝山钢铁股份有限公司 | Control method for preventing variable frequency motor from burning loss |
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| CN103468924A (en) * | 2013-09-27 | 2013-12-25 | 北京佰能电气技术有限公司 | Heating furnace steel blank discharge protection device |
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2014
- 2014-06-13 CN CN201410263999.9A patent/CN105202927B/en active Active
Patent Citations (5)
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| GB823939A (en) * | 1956-01-03 | 1959-11-18 | Johann Wilhelm Ludowici | Apparatus for transporting a stack of articles into and out of a processing chamber |
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| CN102641977A (en) * | 2012-05-04 | 2012-08-22 | 北京亿玮坤节能科技有限公司 | Optimizing control energy saving system for steel feeding and discharging of heating furnace |
| CN103468924A (en) * | 2013-09-27 | 2013-12-25 | 北京佰能电气技术有限公司 | Heating furnace steel blank discharge protection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112113433A (en) * | 2019-06-20 | 2020-12-22 | 宝山钢铁股份有限公司 | Control method for preventing variable frequency motor from burning loss |
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| CN105202927B (en) | 2017-05-31 |
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