CN106312038B - A kind of ladle long nozzle method of controlling security - Google Patents
A kind of ladle long nozzle method of controlling security Download PDFInfo
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- CN106312038B CN106312038B CN201510368712.3A CN201510368712A CN106312038B CN 106312038 B CN106312038 B CN 106312038B CN 201510368712 A CN201510368712 A CN 201510368712A CN 106312038 B CN106312038 B CN 106312038B
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- hydraulic cylinder
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- manipulator
- long nozzle
- ladle
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Abstract
The present invention provides a kind of ladle long nozzle method of controlling security, makes the mechanical hydraulic composite driving device for including pillar, manipulator, hydraulic cylinder, manual ball valve, counterweight, sequence valve, reversal valve I and reversal valve II.Long nozzle is pressed on collector nozzle of ladle all the time using manipulator rear end counterweight；Reversal valve I, reversal valve II decline by the way that hydraulic cylinder control machinery hand is anterior, the long nozzle of front end is disengaged collector nozzle；Two chamber intercommunication of hydraulic cylinder, ensures that manipulator follows action；Sequence valve turns on two chamber of hydraulic cylinder automatically during superpressure, realizes the reliability for following action；During hydraulic system fault, the manually action of ball valve manipulator.The present invention can effectively avoid the molten steel splash accident triggered situations such as hydraulic system fault, maloperation, so as to fulfill the security control of long nozzle.
Description
Technical field
The invention belongs to machinery equipment field, more particularly to a kind of method of controlling security of ladle long nozzle.
Background technology
Qualified molten steel transports big bag turntable or transverse-moving trolley to through ladle, injects tundish through long nozzle, then through immersion
Crystallizer is injected at the mouth of a river, and the use of tundish realizes the benefit that multiple tank even pours.The effect of long nozzle is implemented in combination with Argon
Molding casting, prevents secondary oxidation of steel and nitrogen pick-up.So long nozzle can not only be moved up and down with ladle and it is necessary to all the time
It is pressed on ladle collector nozzle, to ensure sealing effect.Long water gap mechanical arm is the special equipment for realizing the function, it is acted
Whether reliably, conveniently, not only directly affect production operation, also affect the personal safety of operating personnel, i.e., in casting process,
If long nozzle is disengaged with ladle collector nozzle, the excessive splash of molten steel can cause machine to ruin the accidents such as people's wound.
At present, long nozzle generally uses hydraulic cylinder control mode, its concrete composition includes：Manipulator, hydraulic cylinder, back pressure
Valve, throttle valve, overflow valve, hand-operated direction valve, repairing check valve and decline check valve.Control method is：
1st, long nozzle elevating control：Long nozzle lifting is controlled by the commutation of hand-operated direction valve, the memory of hand-operated direction valve band
Function, there is 3 valve positions, by handle spool can be made to be parked on any valve position, realizes and rises, declines, stopping 3 actions.
2nd, long nozzle holding pressure control：In casting process, long nozzle must be pressed on ladle collector nozzle all the time, the system
Ensure that hydraulic cylinder cavity of resorption (vertical motion) remains pressure by setting accumulator, realize that long nozzle is pressed on molten steel all the time
On tank collector nozzle.
3rd, long nozzle servo antrol：Hydraulic control one-way valve of the hand-operated valve on right position, hydraulic cylinder epicoele oil return line during rising
Open, hydraulic cylinder cavity of resorption pressure oil is in and directly feeds state, while oil return line is unimpeded；Hand-operated valve is still on the right side during decline
Position, hydraulic cylinder is still unimpeded into, oil return line, and power source is changed into ladle downlink active force, and overcomes the anti-work of hydraulic system
When firmly cavity pressure reaches certain value under (climbing power) hydraulic cylinder, counterbalance valve (fuel feeding) is opened, and declines closed check valve, through fixation
Throttle orifice oil return, hydraulic cylinder epicoele hydraulic oil are supplemented through repairing check valve.
Hand-operated valve is in same position all the time i.e. in servomechanism process, and setting completed for counterbalance valve, and system automatically controls nothing
Need to be manually operated, only after completing long nozzle and being docked with ladle collector nozzle, hand-operated valve is got into rising threshold position.
But also there are following hidden danger for hydraulic cylinder control mode：
1st, during power breakdown such as leakage, accumulation of energy, detecting element failure, manipulator easily disengages, and overflow steel.
2nd, counterbalance valve stress disorder, declines pressure rise in servomechanism process, may damage mouth of a river seal, molten steel oxidation production by pressure
Raw quality accident.
3rd, counterbalance valve stress disorder, robot support mechanism can be damaged or damage by declining hypertonia in servomechanism process, such as
Fruit supporting mechanism, which damages, is not enough to support long nozzle, and long nozzle will be disengaged from ladle nozzle, the steel that overflows occurs.
4th, valve components card resistance, overflow valve failure, hydraulic cylinder epicoele can not oil return, rising can not be servo-actuated, and long nozzle departs from steel
Water pot collector nozzle and wear steel accident.
The content of the invention
The present invention provides a kind of ladle long nozzle method of controlling security, and its object is to avoid because of hydraulic system fault, by mistake
The molten steel splash accident that situations such as operation triggers, realizes the safe and reliable control of ladle long nozzle.
For this reason, the solution that the present invention is taken is：
A kind of ladle long nozzle method of controlling security, it is characterised in that：
Design and produce mechanical hydraulic composite driving device：
Combined driving device includes pillar, manipulator, hydraulic cylinder, manual ball valve, counterweight, sequence valve, reversal valve I and commutation
Valve II, pillar upper end hydraulic cylinder are hinged on manipulator front portion, and manipulator rear end is equipped with counterweight, and manipulator is movably connected on pillar
Portion, reversal valve I and reversal valve II are connected with hydraulic cylinder A, B chamber respectively, and short circuit has hand respectively between reversal valve I and reversal valve II
Dynamic ball valve and sequence valve；
Long nozzle security control：
(1) vertical motion is realized：Using manipulator rear end counterweight, manipulator front end long nozzle is set to remain upward
Power, long nozzle is pressed on collector nozzle of ladle all the time；Meanwhile weight is matched somebody with somebody in increase and decrease as needed, realizes hydraulic system fault shape
Manual operation under state；
(2) down maneuver is realized：Reversal valve I, reversal valve II decline by the way that hydraulic cylinder control machinery hand is anterior, make front end
Long nozzle disengages collector nozzle；
(3) servomechanism process controls：Two chamber intercommunication of hydraulic cylinder, ensures that manipulator follows action；Thing is realized using manual ball valve
Therefore follow action under state；
(4) overload protection：During superpressure, sequence valve turns on two chamber of hydraulic cylinder automatically, realizes the reliability for following action, and right
Mechanical device is protected；
(5) control manually：When hydraulic system fault can not come into operation, the manual ball of unicom hydraulic cylinder A, B chamber is opened
Valve, passes through the up and down action of manual hand manipulation's manipulator；When replacing ladle or long nozzle, counterweight block number is first reduced, is allowed to apply
Add less manpower just can realize the lifting action of manipulator, complete to replace ladle or long nozzle action, then increase clump weight
Number, makes long nozzle be pressed on collector nozzle of ladle, and realize lag function.
The hydraulic cylinder is cross-section hydraulic cylinder.
Beneficial effects of the present invention are：
The present invention uses mechanical hydraulic composite driving device, collection security and convenience and one；By with recanalization control
Long nozzle processed, can make long nozzle remain uptrend and be pressed on collector nozzle of ladle；Long nozzle can follow all the time
Ladle acts, and long nozzle is constant for the active force of collector nozzle, not only contributes to mouth of a river sealing, while manipulator and its support machine
Structure is since stress is kept constant, its service life is controllable, it is possible to achieve pre-emptive maintenace.Hydraulic system is only used as disengaging the work of long nozzle
Tool, thus the stability of its system does not interfere with the security of long nozzle；Meanwhile manual ball valve is provided with, in hydraulic system event
Under barrier state, the operations such as handling long nozzle can be completed with manual control machine tool hand.Therefore, the present invention can effectively avoid due to hydraulic pressure
The molten steel splash accident that situations such as system failure, maloperation triggers, realizes the safe and reliable control of ladle long nozzle.
Brief description of the drawings
Fig. 1 is mechanical hydraulic composite driving device structure diagram.
In figure：Reversal valve I 1, pillar 2, manipulator 3, long nozzle 4, hydraulic cylinder 5, manual ball valve 6, counterweight 7, sequence valve 8,
Reversal valve II 9.
Embodiment
As seen from Figure 1, mechanical hydraulic composite driving device of the present invention, mainly by reversal valve I 1, pillar 2, manipulator 3,
Long nozzle 4, hydraulic cylinder 5, manual ball valve 6, counterweight 7, sequence valve 8 and reversal valve II 9 are formed.2 upper end hydraulic cylinder 5 of pillar is hinged
In the front portion of manipulator 3, the rear end of manipulator 3 is equipped with counterweight 7, and manipulator 3 is movably connected in the top of pillar 2, reversal valve I 1
It is connected respectively with A, B chamber of hydraulic cylinder 5 with reversal valve II 9, short circuit has manual ball respectively between reversal valve I 1 and reversal valve II 9
Valve 6 and sequence valve 8.
The specific method of long nozzle security control of the present invention, mainly realizes 4 vertical motion of filling pipe end and pressure using counterweight 7
Tight function, the decline disengagement for realizing long nozzle 4 by hydraulic system acts, while sets manual-operated emergent system, realizes hydraulic pressure system
Manual operation under malfunction, it is ensured that the security control of long nozzle 4.
1st, vertical motion is realized：Using 3 rear end counterweight 7 of manipulator, 3 front end long nozzle 4 of manipulator is set to remain upward
Power, long nozzle 4 is pressed on collector nozzle of ladle all the time；Meanwhile increase and decrease the weight of counterweight 7 as needed, realize hydraulic pressure system
Manual operation under malfunction of uniting.
2nd, down maneuver is realized：Reversal valve I 1, reversal valve II 9 decline by the way that 5 control machinery hand of hydraulic cylinder 3 is anterior, before making
The long nozzle 4 at end disengages collector nozzle.
3rd, servomechanism process controls：5 liang of chamber intercommunications of hydraulic cylinder, ensure that manipulator 3 follows action；Realized using manual ball valve 6
Action is followed under accident condition.
4th, overload protection：During superpressure, sequence valve 8 turns on 5 liang of chambers of hydraulic cylinder automatically, realizes the reliability for following action, and
Mechanical device is protected.
5th, control manually：When hydraulic system fault can not come into operation, open unicom hydraulic cylinder 5 A, B chamber it is manual
Ball valve 6, passes through the up and down action of manual hand manipulation's manipulator 3.When replacing ladle or long nozzle 4,7 block number of counterweight is first reduced,
Being allowed to apply less manpower just can realize the lifting action of manipulator 3, complete to replace ladle or long nozzle 4 acts, Ran Houzeng
Add 7 block number of counterweight, long nozzle 4 is pressed on collector nozzle of ladle, and realize lag function.
The detailed process of long nozzle security control of the present invention is：
1st, semi-automatic operation：I 1Y01 of decline-reversal valve and II 9Y02 of reversal valve obtain it is electric, realize long nozzle 4 depart from molten steel
Tank collector nozzle；I 1Y01 of rising-reversal valve and II 9Y02 of reversal valve is powered off, and long nozzle 4 rises by the leverage of counterweight 7,
Realize that long nozzle 4 is docked with collector nozzle of ladle；I 1Y01 of stopping-reversal valve obtain it is electric, II 9Y02 of reversal valve power-off, realize any height
Degree manipulator 3 stops.
2nd, it is automatically brought into operation：I 1Y01 of reversal valve and II 9Y02 of reversal valve is powered off, and after long nozzle 4 pushes down collector nozzle of ladle, is performed
" automatic " operation, long nozzle 4 are pressed on collector nozzle of ladle all the time under the effect of counterweight 7, and rising is then acted on by counterweight 7, is declined
Acted on by ladle, so as to fulfill " servo-actuated " function.
3rd, it is manually operated：When hydraulic system breaks down, hydraulic system is cut off, opens the manual ball valve on hydraulic cylinder 5
6, manipulator 3 is completely free of hydraulic control；, can be real by suitably increasing and decreasing 3 rear end counterweight of manipulator, 7 block number or carrying out manual intervention
Existing manual control machine tool hand 3 continues to produce.
4th, overload protection：Such as reversal valve failure, in downward servomechanism process 5 times cavity pressures of hydraulic cylinder can be caused drastically to raise,
Produce dangerous.To avoid occurring this situation, sequence valve 8 is set between 5 upper and lower cavity pipeline of hydraulic cylinder, when 5 cavity of resorption pressure of hydraulic cylinder
When power reaches a certain setting value, sequence valve 8 is opened, and hydraulic oil returns to 5 epicoele of hydraulic cylinder, due to being cross-section hydraulic cylinder 5, so
Oil return is in equilibrium state.
Claims (2)
- A kind of 1. ladle long nozzle method of controlling security, it is characterised in that：Design and produce mechanical hydraulic composite driving device：Combined driving device includes pillar, manipulator, hydraulic cylinder, manual ball valve, counterweight, sequence valve, reversal valve I and reversal valve II, pillar upper end hydraulic cylinder is hinged on manipulator front portion, and manipulator rear end is equipped with counterweight, and manipulator is movably connected on pillar Portion, reversal valve I and reversal valve II are connected with hydraulic cylinder A, B chamber respectively, and short circuit has hand respectively between reversal valve I and reversal valve II Dynamic ball valve and sequence valve；Long nozzle security control：(1) vertical motion is realized：Using manipulator rear end counterweight, manipulator front end long nozzle is set to remain upward power, will Long nozzle is pressed on collector nozzle of ladle all the time；Meanwhile weight is matched somebody with somebody in increase and decrease as needed, is realized under hydraulic system fault state Manual operation；(2) down maneuver is realized：Reversal valve I, reversal valve II pass through the anterior long water for declining, making front end of hydraulic cylinder control machinery hand Mouth disengages collector nozzle；(3) servomechanism process controls：Two chamber intercommunication of hydraulic cylinder, ensures that manipulator follows action；Accident shape is realized using manual ball valve Action is followed under state；(4) overload protection：During superpressure, sequence valve turns on two chamber of hydraulic cylinder automatically, realizes the reliability for following action, and to machinery Device is protected；(5) control manually：When hydraulic system fault can not come into operation, the manual ball valve of unicom hydraulic cylinder A, B chamber is opened, is led to Cross the up and down action of artificial hand operating mechanism hand；When replacing ladle or long nozzle, counterweight block number is first reduced, is allowed to apply smaller Manpower just can realize the lifting action of manipulator, complete to replace ladle or long nozzle action, then increase counterweight block number, make length The mouth of a river is pressed on collector nozzle of ladle, and realizes lag function.
- 2. ladle long nozzle method of controlling security according to claim 1, it is characterised in that the hydraulic cylinder is cross-section Hydraulic cylinder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510368712.3A CN106312038B (en) | 2015-06-26 | 2015-06-26 | A kind of ladle long nozzle method of controlling security |
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| CN201510368712.3A CN106312038B (en) | 2015-06-26 | 2015-06-26 | A kind of ladle long nozzle method of controlling security |
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| CN106312038A CN106312038A (en) | 2017-01-11 |
| CN106312038B true CN106312038B (en) | 2018-04-24 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107020370A (en) * | 2017-06-05 | 2017-08-08 | 大连华锐重工集团股份有限公司 | Supermatic ladle long nozzle steerable system |
| CN110216260A (en) * | 2019-06-19 | 2019-09-10 | 武汉钢铁有限公司 | The method of Cleanliness of Molten Steel is improved in continuous casting process |
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|---|---|---|---|---|
| US4664135A (en) * | 1984-05-07 | 1987-05-12 | Sanders Associates, Inc. | Pilot valve |
| CN201020530Y (en) * | 2007-03-29 | 2008-02-13 | 上海梅山钢铁股份有限公司 | Multiloop controlled molten steel sack sliding gate hydraulic system |
| CN201841256U (en) * | 2010-10-29 | 2011-05-25 | 江阴兴澄特种钢铁有限公司 | Control device of large-square billet long-water gap operating arm |
| CN202273939U (en) * | 2011-09-26 | 2012-06-13 | 邢立杰 | Drive roll water-cooled electromagnetically-controlled hydraulic cylinder of withdrawing and straightening machine |
| CN103170613A (en) * | 2013-03-08 | 2013-06-26 | 马钢(集团)控股有限公司 | Hydraulic control system for opening and closing of continuous cast bale sliding nozzle |
| CN203221198U (en) * | 2013-04-25 | 2013-10-02 | 韶关市龙润工业技术有限公司 | Manipulator for ladle long nozzle |
-
2015
- 2015-06-26 CN CN201510368712.3A patent/CN106312038B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4664135A (en) * | 1984-05-07 | 1987-05-12 | Sanders Associates, Inc. | Pilot valve |
| CN201020530Y (en) * | 2007-03-29 | 2008-02-13 | 上海梅山钢铁股份有限公司 | Multiloop controlled molten steel sack sliding gate hydraulic system |
| CN201841256U (en) * | 2010-10-29 | 2011-05-25 | 江阴兴澄特种钢铁有限公司 | Control device of large-square billet long-water gap operating arm |
| CN202273939U (en) * | 2011-09-26 | 2012-06-13 | 邢立杰 | Drive roll water-cooled electromagnetically-controlled hydraulic cylinder of withdrawing and straightening machine |
| CN103170613A (en) * | 2013-03-08 | 2013-06-26 | 马钢(集团)控股有限公司 | Hydraulic control system for opening and closing of continuous cast bale sliding nozzle |
| CN203221198U (en) * | 2013-04-25 | 2013-10-02 | 韶关市龙润工业技术有限公司 | Manipulator for ladle long nozzle |
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