CN112893824A - Ladle hot repair method and ladle hot repair device - Google Patents
Ladle hot repair method and ladle hot repair device Download PDFInfo
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- CN112893824A CN112893824A CN201911218160.2A CN201911218160A CN112893824A CN 112893824 A CN112893824 A CN 112893824A CN 201911218160 A CN201911218160 A CN 201911218160A CN 112893824 A CN112893824 A CN 112893824A
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- hot repair
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- 230000008439 repair process Effects 0.000 title claims abstract description 298
- 238000000034 method Methods 0.000 title claims abstract description 50
- 239000000428 dust Substances 0.000 claims abstract description 175
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 62
- 239000010959 steel Substances 0.000 claims abstract description 62
- 239000000779 smoke Substances 0.000 claims abstract description 27
- 239000004576 sand Substances 0.000 claims description 25
- 238000005266 casting Methods 0.000 claims description 13
- 238000012546 transfer Methods 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 abstract description 12
- 238000013461 design Methods 0.000 description 9
- 238000009628 steelmaking Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
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- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- 238000010079 rubber tapping Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/002—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using a central suction system, e.g. for collecting exhaust gases in workshops
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/12—Travelling ladles or similar containers; Cars for ladles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to a ladle hot repair method and a ladle hot repair device, wherein the ladle hot repair method comprises the following steps: the ladle hot repair station is arranged in a non-hoisting molten steel area, a ladle receiving an inner offline of a molten steel receiving bay is transported to the ladle hot repair station through a cross vehicle, the ladle is subjected to hot repair operation by using the ladle hot repair device at the ladle hot repair station, smoke and dust are collected and transported to a workshop dust removal pipeline simultaneously in the hot repair operation, and the ladle is returned to the molten steel receiving bay through the cross transport after the hot repair operation is finished. The ladle hot repair method and the ladle hot repair device overcome the problems of poor safety, large crane operation pressure, poor environmental protection and the like in the prior art, are safe and environment-friendly, and can greatly reduce the pressure of molten steel receiving the operation of a cross crane.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to a ladle hot repair method and a ladle hot repair device.
Background
At present, ladle hot repair methods and devices in domestic steelmaking enterprises are also designed traditionally and are mainly arranged in a molten steel lifting area of a molten steel receiving bay, and operators of the ladle hot repair methods have to face potential unsafe factors during molten steel lifting and are not in line with the current safety specifications or are arranged at two ends of the molten steel receiving bay, and dust collection hoods are not designed at ladle hot repair stations, so that the following problems mainly exist:
(1) personal safety of operators at the ladle hot repair station can not be guaranteed, and the risk that the operators cannot escape in time when steel is spilled during steel lifting accidents occur exists;
(2) the hoisting device is arranged at two ends of the molten steel receiving span, and the hoisting stroke of the crane for hoisting the ladle which needs hot repair and is off-line is increased, so that the operating pressure of the crane is increased;
(3) a movable dust hood of a steel ladle hot repair station is not designed to collect smoke dust during hot repair, so that steel enterprises cannot meet the national environmental protection requirements.
Therefore, the inventor provides a ladle hot repair method and a ladle hot repair device by virtue of experience and practice of related industries for many years, so as to overcome the defects in the prior art.
Disclosure of Invention
The invention aims to provide a ladle hot repair method and a ladle hot repair device, which solve the problems of poor safety, large crane operation pressure, poor environmental protection and the like in the prior art.
The invention aims to realize the method, and the method for hot repairing the ladle comprises the following steps: the ladle hot repair station is arranged in a non-hoisting molten steel area, a ladle receiving an inner offline of a molten steel receiving bay is transported to the ladle hot repair station through a cross vehicle, the ladle is subjected to hot repair operation by using the ladle hot repair device at the ladle hot repair station, smoke and dust are collected and transported to a workshop dust removal pipeline simultaneously in the hot repair operation, and the ladle is returned to the molten steel receiving bay through the cross transport after the hot repair operation is finished.
In a preferred embodiment of the present invention, the ladle hot repair device comprises a ladle hot repair platform and a movable dust hood; the ladle hot repair platform can be moved to a ladle hot repair station for hot repair operation trampling; the movable dust hood can move to a ladle hot repair station for collecting smoke dust generated by hot repair operation; the ladle hot repair platform and the movable dust hood are electrically connected with the field control part.
In a preferred embodiment of the present invention, the ladle hot repair method includes the following steps:
step a, setting a ladle hot repair station in a non-hoisting molten steel area;
b, receiving molten steel, carrying out cross-in-casting pouring, completing off-line ladle slag removal, hoisting the ladle to a cross-vehicle by a casting crane, turning the ladle by 90 degrees, placing the ladle on the cross-vehicle, and controlling the cross-vehicle to transfer the ladle to a ladle hot repair station;
c, when the cross-car bearing ladle runs to a ladle hot repair station, controlling the ladle hot repair platform and the movable dust hood to run to the ladle hot repair station;
d, an operator mounts the ladle hot repair platform to perform ladle hot repair operation, and the dust removing cover is moved to collect smoke dust generated by hot repair and convey the smoke dust to a workshop dust removing pipeline;
step e, after the ladle hot repair is finished, the ladle hot repair platform and the movable dust hood move to the standby positions of the ladle hot repair platform and the movable dust hood to wait for the hot repair of the next ladle;
and f, controlling the cross-over vehicle to transfer the ladle which finishes the hot repair operation back to the molten steel receiving cross-over.
In a preferred embodiment of the present invention, in the step c, the straddle carrier is limited by a third limit switch or a first proximity switch, and the third limit switch or the first proximity switch is electrically connected to the field control unit; the ladle hot repair platform and the movable dust hood are interlocked with the straddle carrier through the field control part;
when the cross-car runs to the ladle hot repair station, the third limit switch or the first proximity switch sends a position signal to the field control part, the field control part controls the ladle hot repair platform and the movable dust hood to move to the ladle hot repair station and respectively carry out limit control through the first limit switch and the second limit switch, and the first limit switch and the second limit switch are both electrically connected with the field control part.
In a preferred embodiment of the invention, the movable dust hood comprises a dust hood body capable of collecting smoke dust generated by hot repair, a dust hood dust removal pipeline is communicated with the dust hood body and can be butted with a workshop dust removal pipeline, and an electric valve is arranged on the workshop dust removal pipeline and is electrically connected with the field control part;
in the step d, an electric valve on the workshop dust removal pipeline is automatically opened, an operator mounts a ladle hot repair platform to perform ladle hot repair operation, and the dust generated by hot repair is collected by the dust hood body and is conveyed to the workshop dust removal pipeline through the dust hood dust removal pipeline to perform subsequent dust removal treatment.
In a preferred embodiment of the invention, a cantilever crane is arranged on the ladle hot repair platform, and a ladle nozzle sand filling device is also arranged on the ladle hot repair platform;
in the step e, after the ladle hot repair is finished, the movable dust hood is moved to a standby position to wait for the hot repair dust removal of the next ladle; and turning the ladle after hot repair back, hoisting the ladle nozzle sand filling device by the cantilever crane to perform sand filling operation on the ladle sliding nozzle, and moving the ladle hot repair platform to a standby position after the sand filling operation is completed.
In a preferred embodiment of the invention, the straddle carrier is provided with a ladle overturning device, and the ladle overturning device is used for overturning the ladle at the ladle hot repair station back by 90 degrees and aligning the ladle.
In a preferred embodiment of the present invention, in step a, 2 ladle hot repair stations are provided in the non-hoisting molten steel area, and the hot repair operation of the ladle hot repair device is performed alternately between the 2 ladle hot repair stations.
The object of the invention can also be achieved by providing the ladle hot repair device used in the ladle hot repair method, wherein the ladle hot repair device comprises a ladle hot repair platform and a movable dust hood, the ladle hot repair platform comprises an operation platform, and the operation platform can be moved to a ladle hot repair station for hot repair operation trampling; the movable dust hood comprises a dust hood body, and the dust hood body is used for collecting smoke generated by hot repair operation; the ladle hot repair platform and the movable dust hood are electrically connected with the field control part.
In a preferred embodiment of the present invention, a first traverse trolley is disposed on the operating platform, and the first traverse trolley is used for driving the operating platform to move to a ladle hot repair station; the dust hood body is provided with a second transverse trolley, and the second transverse trolley is used for driving the dust hood body to move to a ladle hot repair station; a first limit switch is arranged on the first transverse moving trolley, and a second limit switch is arranged on the second transverse moving trolley; the first limit switch and the second limit switch are electrically connected with a field control part, and the first limit switch and the second limit switch respectively limit and control the first transverse moving trolley and the second transverse moving trolley; the first transverse moving trolley and the second transverse moving trolley are electrically connected with the field control part.
In a preferred embodiment of the present invention, a dust hood dust removal duct is communicated with the dust hood body, and the dust hood dust removal duct can be butted with a workshop dust removal duct.
In a preferred embodiment of the invention, a cantilever crane is arranged on the ladle hot repair platform and used for manually replacing the ladle sliding nozzle, and the cantilever crane is electrically connected with the field control part; the ladle hot repair platform is also provided with a ladle nozzle sand filling device, and the cantilever crane can hoist the ladle nozzle sand filling device to perform sand filling operation on the ladle.
In a preferred embodiment of the present invention, a robot automatic ladle sliding gate replacing device is disposed on the ladle hot repair platform, and the robot automatic ladle sliding gate replacing device is electrically connected to the field control unit.
Therefore, the ladle hot repair method and the ladle hot repair device provided by the invention have the following beneficial effects:
the invention aims to provide a new thought and a new method for ladle hot repair in a converter or an electric furnace steelmaking workshop so as to adapt to the regulation of the existing safety standard and achieve the purposes of safety, environmental protection and human-oriented; according to the ladle hot repair method provided by the invention, the ladle hot repair station is transferred to the non-hoisting molten steel area, so that the situation that operators of the hot repair station in the traditional design accept cross operation in the molten steel hoisting molten steel area is avoided, the personal safety of the operators is ensured, the design defect of the traditional design that the personal safety is not well considered is overcome, and the ladle hot repair method conforms to the current safety standard; meanwhile, the cross-span transportation of the ladle is realized through a cross-car, and a crane does not need to be lifted to two ends of a workshop for hot repair operation, so that the occupation of a casting crane is reduced, and the pressure of molten steel receiving the cross-crane operation is greatly reduced; in the ladle hot repair method provided by the invention, smoke dust is collected during hot repair operation, so that the ladle hot repair method is good in environmental protection; in the ladle hot repair method provided by the invention, the alternate operation of two ladle hot repair stations can be realized simultaneously, the functions of ladle nozzle sand filling and automatic robot sliding nozzle replacement can be expanded, and the ladle hot repair method has the advantages of high efficiency, safety, environmental protection, low cost and the like;
the ladle hot repair device provided by the invention has the advantages of simple structure, convenience in installation, safety and reliability, can be used for alternately operating a plurality of ladle hot repair stations, can expand the functions of sand filling of a ladle nozzle and automatic replacement of a sliding nozzle by a robot, and effectively improves the operating efficiency.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention.
Wherein:
FIG. 1: is a front view of the ladle hot repair device of the invention.
FIG. 2: is a top view of the ladle hot repair device of the invention.
In the figure:
100. a ladle hot repair device;
1. a steel ladle hot repair platform;
11. an operating platform; 12. a first traverse carriage; 13. a cantilever crane;
2. moving the dust hood;
21. a dust hood body; 22. a second traverse carriage; 23. a dust removal duct of the dust removal hood;
31. a first limit switch; 32. a second limit switch;
7. a field PLC cabinet;
8. a straddle carrier;
9. and (5) steel ladles.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
The specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the invention in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention provides a ladle hot repair method, which comprises the following steps: set up ladle heat repair station in non-handling molten steel district, accept to stride (being located handling molten steel district, prior art) the molten steel and cast ladle 9 that the completion was off production line in the casting to cross the transshipment to ladle heat repair station through striding car 8 (prior art, can control through the other control box of machine), utilize ladle heat repair device 100 to carry out the heat repair operation to the ladle at ladle heat repair station, the heat repair operation is collected the smoke and dust simultaneously and is carried to workshop dust removal pipeline, return the ladle to the molten steel and accept after the heat repair operation and stride.
The invention aims to provide a new thought and a new method for ladle hot repair in a converter or an electric furnace steelmaking workshop so as to adapt to the regulation of the existing safety standard and achieve the purposes of safety, environmental protection and human-oriented; according to the ladle hot repair method provided by the invention, the ladle hot repair station is transferred to the non-hoisting molten steel area, so that the situation that operators of the hot repair station in the traditional design accept cross operation in the molten steel hoisting molten steel area is avoided, the personal safety of the operators is ensured, the design defect of the traditional design that the personal safety is not well considered is overcome, and the ladle hot repair method conforms to the current safety standard; meanwhile, the cross-span transportation of the ladle is realized through a cross-car, and a crane does not need to be lifted to two ends of a workshop for hot repair operation, so that the occupation of a casting crane is reduced, and the pressure of molten steel receiving the cross-crane operation is greatly reduced; in the ladle hot repair method provided by the invention, smoke dust is collected during hot repair operation, and the ladle hot repair method is good in environmental protection.
Further, as shown in fig. 1 and 2, the ladle hot repair device 100 used in the ladle hot repair method of the present invention includes a ladle hot repair platform 1 and a movable dust hood 2; the ladle hot repair platform 1 can be moved to a ladle hot repair station for hot repair operation trampling; the movable dust hood 2 can be moved to a ladle hot repair station for collecting smoke dust generated by hot repair operation; the ladle hot repair platform 1 and the movable dust excluding hood 2 are both electrically connected with the field control part, in the embodiment, the field control part is a field PLC cabinet 7 (prior art), all control signals in the operation process are received and sent by the field PLC cabinet, and the field PLC cabinet can communicate with a main PLC (prior art) in a whole workshop.
Further, the ladle hot repair method comprises the following steps:
step a, setting a ladle hot repair station in a non-hoisting molten steel area;
specifically, the converter bay, the raw material bay or the pouring bay are all located in a non-hoisting molten steel area, and the ladle hot repair station can be arranged on the converter bay, the raw material bay or the pouring bay; the ladle hot repair station is not required to be arranged at two ends of a molten steel receiving bay in a steelmaking workshop, so that the ladle hot repair station is far away from a molten steel lifting area and the operating rate of the bay crane is increased; the specific position of the ladle hot repair station depends on the field space.
In order to improve the operation efficiency, 2 ladle hot repair stations are generally arranged in a non-hoisting molten steel area, and the hot repair operation of the ladle hot repair device is alternately carried out among the 2 ladle hot repair stations.
B, receiving molten steel, crossing in-line casting, finishing slag removal of the off-line ladle 9, hoisting the ladle to a cross vehicle 8 capable of moving to a ladle hot repair station through a casting crane (in the prior art, the cross vehicle is positioned at the cross line when hoisting the ladle), turning the ladle 9 for 90 degrees (the angle is determined according to the falling direction and the angle of the ladle, and the ladle needs to be turned to a direction suitable for hot repair by using equipment), placing the ladle 9 on the cross vehicle 8, and controlling the cross vehicle 8 to transport the ladle 9 to the ladle hot repair station through cross;
specifically, the cross-span line of the ladle hot repair station can be arranged at a proper position of a molten steel receiving span lifting molten steel area, the ladle 9 which receives the cast off-line is subjected to hot repair operation from the cross-span to a non-lifting molten steel area, and the personal safety of operators is ensured; the ladle can be turned over by 90 degrees by using a casting crane, and the ladle can also be turned over by 90 degrees by using a ladle turning device arranged on the straddle carrier 8, so that the occupation time of the casting crane is reduced; the straddle carrier is controlled by a machine-side control box (prior art) to move to a ladle hot repair station.
C, when the cross-car bearing ladle runs to a ladle hot repair station, controlling the ladle hot repair platform 1 and the movable dust hood 2 to run to the ladle hot repair station;
specifically, the straddle carrier 8 is limited by a third limit switch or a first proximity switch, and the third limit switch or the first proximity switch is electrically connected with the field control part; the ladle hot repair platform 1 and the movable dust hood 2 are interlocked with the straddle carrier 8 through a field control part;
when the cross-car runs to the ladle hot repair station, the third limit switch or the first proximity switch sends a position signal to the field control part, the field control part controls the ladle hot repair platform 1 and the movable dust hood 2 to move to the ladle hot repair station and respectively perform limit control through the first limit switch 31 and the second limit switch 32, and the first limit switch 31 and the second limit switch 32 are electrically connected with the field control part (a field PLC cabinet).
D, an operator mounts the ladle hot repair platform 1 to perform ladle hot repair operation, and the dust removal cover 2 is moved to collect smoke dust generated by hot repair and convey the smoke dust to a workshop dust removal pipeline;
specifically, the movable dust hood 2 comprises a dust hood body 21 capable of collecting smoke generated by hot repair, a dust hood dust removal pipeline 23 is communicated with the dust hood body 21, the dust hood dust removal pipeline 23 can be in butt joint with a workshop dust removal pipeline (capable of conveying the smoke and free of being fixedly connected so as to move the dust hood 2), and an electric valve (electric dust removal valve) is arranged on the workshop dust removal pipeline and is electrically connected with the field control part; generally, a workshop dust removal pipeline is connected with a dust removal fan, the dust removal fan is communicated with a dust remover, and the dust remover is used for dust removal treatment;
when the movable dust hood 2 runs to a ladle hot repair station, the dust hood dust removal pipeline 23 can be in butt joint with a workshop dust removal pipeline, meanwhile, a target-in-place signal of the second limit switch is transmitted to the field control part (the field PLC cabinet), the electric valve on the workshop dust removal pipeline is automatically opened by the field control part (the field PLC cabinet), an operator can climb on the ladle hot repair platform to perform ladle hot repair operation, the dust hood body 21 collects smoke generated by hot repair and transmits the smoke to the workshop dust removal pipeline through the dust hood dust removal pipeline 23, and meanwhile, the smoke enters the dust remover to perform dust removal treatment under the traction of the dust removal fan. Also can set up the cat ladder that is used for the climbing to trample on removing dust excluding hood 2, operating personnel can move up and remove dust excluding hood 2 and carry out the hot repair operation.
The ladle hot repair operation comprises the steps of replacing a sliding plate of a ladle sliding nozzle (the prior art), purging the ladle sliding nozzle and a gas permeable brick (the prior art), and the like.
The ladle hot repair platform 1 is provided with a cantilever crane 13, and an operator can use the cantilever crane to replace a ladle sliding nozzle sliding plate; a robot device for automatically replacing the ladle sliding nozzle can be arranged on the ladle hot repair platform 1, and the replacement of the ladle sliding nozzle sliding plate can be automatically completed without using a cantilever crane.
Step e, after the ladle hot repair is finished, the ladle hot repair platform 1 and the movable dust hood 2 are moved to the standby positions to wait for the hot repair of the next ladle;
specifically, after the ladle hot repair is finished, the movable dust hood 2 is moved to a standby position to wait for the hot repair dust removal of the next ladle;
for improving operating efficiency, can use ladle heat to repair the platform extension and increase ladle mouth of a river and irritate sand function, specifically include: arranging a ladle nozzle sand filling device on the ladle hot repair platform; turning over the ladle after hot repair back to right (a ladle turning device is arranged on the cross-over vehicle, turning back the ladle at the ladle hot repair station by 90 degrees and swinging by using the ladle turning device), hoisting the ladle nozzle sand filling device by a cantilever crane to fill sand into the ladle sliding nozzle for receiving the next molten steel of the furnace until the converter tapping line is ready, and moving the ladle hot repair platform to the standby position after the sand filling operation is completed.
And f, controlling the cross-over vehicle to transfer the ladle which finishes the hot repair operation back to the molten steel receiving cross-over.
In a specific embodiment of the invention, 2 ladle hot repair stations share one set of ladle hot repair device operation, and after the first ladle hot repair station finishes the ladle hot repair operation, the ladle 9 returns to a molten steel receiving bay through the bay transfer by the bay transfer vehicle 8; meanwhile, another off-line ladle is hoisted to the cross-car of the second ladle hot repair station under the action of the casting crane, and the actions are circulated, so that ladle hot repair operation can be carried out at the second ladle hot repair station.
As shown in fig. 1 and 2, the present invention provides a ladle hot repair device 100 used in the foregoing ladle hot repair method, where the ladle hot repair device 100 includes a ladle hot repair platform 1 and a movable dust hood 2, the ladle hot repair platform 1 includes an operation platform 11, the operation platform 11 can be moved to a ladle hot repair station for hot repair operation stepping, and a ladder is connected to the operation platform 11 to facilitate an operator to go up and down the operation platform 11; the movable dust hood 2 comprises a dust hood body 21, and the dust hood body 21 is used for collecting smoke dust generated by hot repair operation, so that the environmental protection requirement of a steel-making workshop is met; the ladle hot repair platform 1 and the movable dust hood 2 are both electrically connected with the field control part. In this embodiment, the site control unit is a site PLC cabinet (prior art), which is specially configured for this application, and is fixedly disposed at a certain safe place on site, all control signals of the operation process are received and transmitted by the site PLC cabinet, and the site PLC cabinet can communicate with a master PLC (prior art) of the whole plant. The action of each device can be manually controlled through the operation box beside the machine.
Further, as shown in fig. 1 and 2, a first traverse trolley 12 is arranged on the operation platform 11, and the first traverse trolley 12 is used for driving the operation platform 11 to move to the ladle hot repair station; a second transverse trolley 22 is arranged on the dust hood body 21, and the second transverse trolley 22 is used for driving the dust hood body 21 to move to a ladle hot repair station; the first traverse trolley 12 is provided with a first limit switch 31, and the second traverse trolley 22 is provided with a second limit switch 32; the first limit switch 31 and the second limit switch 32 are both electrically connected with the site control part, and the first limit switch 31 and the second limit switch 32 respectively limit and control the first traverse trolley 12 and the second traverse trolley 22. The first traverse carriage 12 and the second traverse carriage 22 may be industrial hanging traverse carriages. The first traverse carriage 12 and the second traverse carriage 22 are driven by motors, and each motor is electrically connected to the site control section.
In this embodiment, an i-steel rail is arranged below the existing platform beam (in a specific embodiment, the elevation of the top of the platform beam is +8.500m) or the newly-built frame (which is built for the ladle hot repair device) on the roof of the workshop, and the first traverse trolley 12 can be slidably hung on the i-steel rail to drive the operation platform 11 to move; the second traverse trolley 22 can be hung on the I-shaped steel rail in a sliding manner to drive the dust hood body 21 to move.
In a specific embodiment, a vertical column is vertically arranged on the operating platform 11, and a first traverse trolley 12 capable of being hung on an I-shaped steel rail in a sliding manner is arranged at the top of the vertical column.
The start of the first traverse trolley 12 and the first traverse trolley 12 is interlocked with the limit of the cross-car (stop limit when reaching the ladle hot repair station), and can be automatically controlled by a field PLC; the first traverse carriage 12 and the traveling of the first traverse carriage 12 may be controlled manually or automatically.
The first traverse trolley 12 and the second traverse trolley 22 can be alternately operated at a plurality of ladle hot repair stations (the number is 2 in one embodiment of the invention), so that the operation efficiency is improved and the cost is reduced.
Further, as shown in fig. 1 and 2, a dust hood dust removal pipeline 23 is communicated with the dust hood body 21, and the dust hood dust removal pipeline 23 can be in butt joint with a workshop dust removal pipeline. An electric valve (electric dust removal valve) is arranged on the workshop dust removal pipeline and is electrically connected with the field control part; generally, a workshop dust removal pipeline is connected with a dust removal fan, the dust removal fan is communicated with a dust remover, and the dust remover is used for dust removal treatment. The dust removal fan and the dust remover are both electrically connected with the field control part. Also can set up the cat ladder that is used for the climbing to trample on the dust excluding hood body 21, operating personnel can walk dust excluding hood body 21 and carry out the hot repair operation.
In the present embodiment, the observation window and the oxygen lance insertion hole are formed in the dust hood body 21, which facilitates observation, ablation and cleaning of the residual steel slag at the air brick (prior art) and the sliding gate (prior art) in the ladle.
Further, as shown in fig. 1 and 2, a cantilever crane 13 can be further arranged on the ladle hot repair platform 1, the cantilever crane 13 is used for manually replacing the ladle sliding nozzle, the cantilever crane 13 is electrically connected with the field control part, in the embodiment, a walking electric hoist (in the prior art) is arranged on the cantilever crane 13, and a lifting hook capable of lifting up and down is arranged on the electric hoist; still set up the ladle mouth of a river on the ladle hot repair platform 1 and irritate sand device, the cantilever crane can handling the ladle mouth of a river irritate sand device (on the base of ladle mouth of a river irritates sand device was fixed in ladle hot repair platform 1, was equipped with the part that can irritate husky operation under cantilever crane 13 drove the ground on it, prior art, no longer repeated here) irritates husky operation to the ladle to improve the turnover efficiency of steel-making shop ladle greatly.
Further, a robot automatic ladle sliding gate replacing device can be further arranged on the ladle hot repair platform 1 (a base of the device can be fixedly connected to the ladle hot repair platform 1, and a part capable of movably replacing a ladle sliding gate sliding plate is arranged on the base, and the robot automatic ladle sliding gate replacing device is not described in detail herein in the prior art and is electrically connected with the field control part. The device for automatically replacing the ladle sliding gate by the robot replaces a cantilever crane, can realize the automatic replacement of the ladle sliding gate sliding plate under the control of the field control part, lightens the manual operation intensity and guarantees the personal safety.
Therefore, the ladle hot repair method and the ladle hot repair device provided by the invention have the following beneficial effects:
the invention aims to provide a new thought and a new method for ladle hot repair in a converter or an electric furnace steelmaking workshop so as to adapt to the regulation of the existing safety standard and achieve the purposes of safety, environmental protection and human-oriented; according to the ladle hot repair method provided by the invention, the ladle hot repair station is transferred to the non-hoisting molten steel area, so that the situation that operators of the hot repair station in the traditional design accept cross operation in the molten steel hoisting molten steel area is avoided, the personal safety of the operators is ensured, the design defect of the traditional design that the personal safety is not well considered is overcome, and the ladle hot repair method conforms to the current safety standard; meanwhile, the cross-span transportation of the ladle is realized through a cross-car, and a crane does not need to be lifted to two ends of a workshop for hot repair operation, so that the occupation of a casting crane is reduced, and the pressure of molten steel receiving the cross-crane operation is greatly reduced; in the ladle hot repair method provided by the invention, smoke dust is collected during hot repair operation, so that the ladle hot repair method is good in environmental protection; in the ladle hot repair method provided by the invention, the alternate operation of two ladle hot repair stations can be realized simultaneously, the functions of ladle nozzle sand filling and automatic robot sliding nozzle replacement can be expanded, and the ladle hot repair method has the advantages of high efficiency, safety, environmental protection, low cost and the like;
the ladle hot repair device provided by the invention has the advantages of simple structure, convenience in installation, safety and reliability, can be used for alternately operating a plurality of ladle hot repair stations, can expand the functions of sand filling of a ladle nozzle and automatic replacement of a sliding nozzle by a robot, and effectively improves the operating efficiency.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (13)
1. A ladle hot repair method is characterized by comprising the following steps: the ladle hot repair station is arranged in a non-hoisting molten steel area, a ladle receiving an inner offline of a molten steel receiving bay is transported to the ladle hot repair station through a cross vehicle, the ladle is subjected to hot repair operation by using the ladle hot repair device at the ladle hot repair station, smoke and dust are collected and transported to a workshop dust removal pipeline simultaneously in the hot repair operation, and the ladle is returned to the molten steel receiving bay through the cross transport after the hot repair operation is finished.
2. The ladle hot repair method according to claim 1, wherein the ladle hot repair device comprises a ladle hot repair platform and a movable dust hood; the ladle hot repair platform can be moved to a ladle hot repair station for hot repair operation trampling; the movable dust hood can move to a ladle hot repair station for collecting smoke dust generated by hot repair operation; the ladle hot repair platform and the movable dust hood are electrically connected with the field control part.
3. The ladle hot repair method of claim 2, comprising the steps of:
step a, setting a ladle hot repair station in a non-hoisting molten steel area;
b, receiving molten steel, carrying out cross-in-casting pouring, completing off-line ladle slag removal, hoisting the ladle to a cross-vehicle by a casting crane, turning the ladle by 90 degrees, placing the ladle on the cross-vehicle, and controlling the cross-vehicle to transfer the ladle to a ladle hot repair station;
c, when the cross-car bearing ladle runs to a ladle hot repair station, controlling the ladle hot repair platform and the movable dust hood to run to the ladle hot repair station;
d, an operator mounts the ladle hot repair platform to perform ladle hot repair operation, and the dust removing cover is moved to collect smoke dust generated by hot repair and convey the smoke dust to a workshop dust removing pipeline;
step e, after the ladle hot repair is finished, the ladle hot repair platform and the movable dust hood move to the standby positions of the ladle hot repair platform and the movable dust hood to wait for the hot repair of the next ladle;
and f, controlling the cross-over vehicle to transfer the ladle which finishes the hot repair operation back to the molten steel receiving cross-over.
4. The ladle hot repair method according to claim 3, wherein in the step c, the straddle carrier is limited by a third limit switch or a first proximity switch, and the third limit switch or the first proximity switch is electrically connected with the field control part; the ladle hot repair platform and the movable dust hood are interlocked with the straddle carrier through the field control part;
when the cross-car runs to the ladle hot repair station, the third limit switch or the first proximity switch sends a position signal to the field control part, the field control part controls the ladle hot repair platform and the movable dust hood to move to the ladle hot repair station and respectively carry out limit control through the first limit switch and the second limit switch, and the first limit switch and the second limit switch are both electrically connected with the field control part.
5. The ladle hot repair method according to claim 3,
the movable dust hood comprises a dust hood body capable of collecting smoke dust generated by hot repair, a dust hood dust removal pipeline is communicated with the dust hood body and can be in butt joint with a workshop dust removal pipeline, and an electric valve is arranged on the workshop dust removal pipeline and is electrically connected with the field control part;
in the step d, an electric valve on the workshop dust removal pipeline is automatically opened, an operator mounts a ladle hot repair platform to perform ladle hot repair operation, and the dust generated by hot repair is collected by the dust hood body and is conveyed to the workshop dust removal pipeline through the dust hood dust removal pipeline to perform subsequent dust removal treatment.
6. The ladle hot repair method according to claim 3,
the ladle hot repair platform is provided with a cantilever crane and a ladle nozzle sand filling device;
in the step e, after the ladle hot repair is finished, the movable dust hood is moved to a standby position to wait for the hot repair dust removal of the next ladle; and turning the ladle after hot repair back, hoisting the ladle nozzle sand filling device by the cantilever crane to perform sand filling operation on the ladle sliding nozzle, and moving the ladle hot repair platform to a standby position after the sand filling operation is completed.
7. The ladle hot repair method according to claim 6, wherein the straddle carrier is provided with a ladle overturning device, and the ladle overturning device is used for overturning the ladle at the ladle hot repair station back by 90 degrees and aligning the ladle.
8. The ladle hot repair method according to claim 3, wherein in the step a, 2 ladle hot repair stations are provided in the non-hoisting molten steel area, and the hot repair work of the ladle hot repair device is performed alternately among the 2 ladle hot repair stations.
9. A ladle hot repair device for use in the ladle hot repair method according to any one of claims 1 to 8, wherein the ladle hot repair device comprises a ladle hot repair platform and a movable dust excluding hood, the ladle hot repair platform comprising an operation platform movable to a ladle hot repair station for hot repair trampling; the movable dust hood comprises a dust hood body, and the dust hood body is used for collecting smoke generated by hot repair operation; the ladle hot repair platform and the movable dust hood are electrically connected with the field control part.
10. The ladle hot repair device according to claim 9, wherein a first traverse carriage is arranged on the operating platform and used for driving the operating platform to move to the ladle hot repair station; the dust hood body is provided with a second transverse trolley, and the second transverse trolley is used for driving the dust hood body to move to a ladle hot repair station; a first limit switch is arranged on the first transverse moving trolley, and a second limit switch is arranged on the second transverse moving trolley; the first limit switch and the second limit switch are electrically connected with a field control part, and the first limit switch and the second limit switch respectively limit and control the first transverse moving trolley and the second transverse moving trolley; the first transverse moving trolley and the second transverse moving trolley are electrically connected with the field control part.
11. The ladle hot repair device according to claim 9, wherein a dust hood dust removal pipeline is communicated with the dust hood body and can be butted with a workshop dust removal pipeline.
12. The ladle hot repair device according to claim 9, wherein a cantilever crane is provided on the ladle hot repair platform, the cantilever crane is used for manually replacing the ladle sliding gate, and the cantilever crane is electrically connected with the on-site control part; the ladle hot repair platform is also provided with a ladle nozzle sand filling device, and the cantilever crane can hoist the ladle nozzle sand filling device to perform sand filling operation on the ladle.
13. The ladle hot repair device according to claim 9, wherein a robot automatic ladle sliding gate nozzle replacing device is provided on the ladle hot repair platform, and the robot automatic ladle sliding gate nozzle replacing device is electrically connected to the field control section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911218160.2A CN112893824A (en) | 2019-12-03 | 2019-12-03 | Ladle hot repair method and ladle hot repair device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911218160.2A CN112893824A (en) | 2019-12-03 | 2019-12-03 | Ladle hot repair method and ladle hot repair device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112893824A true CN112893824A (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911218160.2A Withdrawn CN112893824A (en) | 2019-12-03 | 2019-12-03 | Ladle hot repair method and ladle hot repair device |
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| Country | Link |
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| CN (1) | CN112893824A (en) |
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| CN114054727A (en) * | 2021-09-26 | 2022-02-18 | 张家港宏昌钢板有限公司 | Movable steel ladle maintenance equipment |
| CN116213694A (en) * | 2022-12-30 | 2023-06-06 | 无锡巨力重工股份有限公司 | System integration multifunctional ladle hot repair vehicle |
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| CN114054727A (en) * | 2021-09-26 | 2022-02-18 | 张家港宏昌钢板有限公司 | Movable steel ladle maintenance equipment |
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| CN116213694B (en) * | 2022-12-30 | 2023-11-28 | 无锡巨力重工股份有限公司 | System integration multifunctional ladle hot repair vehicle |
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Application publication date: 20210604 |