CN118006862A - Converter oxygen rifle quick change device - Google Patents
Converter oxygen rifle quick change device Download PDFInfo
- Publication number
- CN118006862A CN118006862A CN202410410589.6A CN202410410589A CN118006862A CN 118006862 A CN118006862 A CN 118006862A CN 202410410589 A CN202410410589 A CN 202410410589A CN 118006862 A CN118006862 A CN 118006862A
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- China
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- plate
- track grooves
- bottom plate
- fixedly connected
- guide supporting
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000001301 oxygen Substances 0.000 title claims abstract description 72
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 72
- 230000008859 change Effects 0.000 title claims description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 18
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 14
- 239000000498 cooling water Substances 0.000 claims description 13
- 241000446313 Lamella Species 0.000 claims description 10
- 238000009628 steelmaking Methods 0.000 abstract description 4
- 210000001503 joint Anatomy 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention belongs to the technical field of steelmaking equipment, and particularly relates to a converter oxygen lance quick-change device, which comprises a bottom plate fixedly connected to an oxygen lance trolley, wherein an upper panel is arranged above the bottom plate, an intermediate plate is arranged between the upper panel and the bottom plate, a first guide supporting mechanism is arranged between the intermediate plate and the bottom plate, a second guide supporting mechanism is arranged between the intermediate plate and the upper panel, the first guide supporting mechanism and the second guide supporting mechanism are vertically arranged, a metal hose connecting component is fixedly connected below the upper panel, the metal hose connecting component penetrates through the intermediate plate and the bottom plate and extends to the lower side of the bottom plate, gaps are arranged between the metal hose connecting component and the intermediate plate and the bottom plate, a male end connector component is detachably and fixedly connected above the upper panel, and an auxiliary fixing component and a plurality of limiting components are fixedly connected on the oxygen lance trolley.
Description
Technical Field
The invention belongs to the technical field of steelmaking equipment, and particularly relates to a converter oxygen lance quick-changing device.
Background
The oxygen lance is a key component in converter oxygen blowing equipment, in the blowing process, the oxygen lance not only needs to bear the radiation of furnace gas and furnace lining in a molten pool, but also directly stretches into the furnace due to the scouring of molten steel and furnace slag caused by the intense chemical reaction in the molten pool, and the temperature in the furnace is up to 2000-2600 ℃ in the blowing process, so that each oxygen lance cannot be continuously used for a long time, and needs to be replaced in time for the next use and needs to be replaced frequently.
At present, when the oxygen lance is installed, the oxygen lance and the metal hose are in flange connection, the installation and the disassembly are long, the final operation efficiency is influenced, the length of the oxygen lance replacement time is extremely critical to the smooth production of converter smelting, and a plurality of convenient and quick oxygen lance replacement mechanisms are also developed in the prior art, such as an oxygen lance quick replacement device with the application number of CN202120668180.6, so that the oxygen lance replacement time is quickened, but the mechanisms basically self-adaptively adjust the position of the oxygen lance by the gravity of the oxygen lance, the adjustment is difficult, the flexibility is poor, and the requirement of quick self-adaptively installing the oxygen lance cannot be met.
Disclosure of Invention
The invention aims to solve the main technical problem of providing the converter oxygen lance quick-change device which is reasonable in structure, good in flexibility and good in self-adaptability.
In order to solve the technical problems, the invention provides the following technical scheme:
The utility model provides a converter oxygen rifle quick change device, including the bottom plate of rigid coupling on the oxygen rifle dolly, the top of bottom plate is provided with the top panel, be provided with the intermediate lamella between top panel and the bottom plate, be provided with first direction supporting mechanism between intermediate lamella and the bottom plate, be provided with second direction supporting mechanism between intermediate lamella and the top panel, first direction supporting mechanism and second direction supporting mechanism lay perpendicularly, the below rigid coupling of top panel has metal collapsible tube coupling assembling, metal collapsible tube coupling assembling passes intermediate lamella and bottom plate and extends to the below of bottom plate, all be provided with the clearance between metal collapsible tube coupling assembling and intermediate lamella and the bottom plate, the rigid coupling has public end joint subassembly in the top detachable of top panel, the rigid coupling has auxiliary fixing subassembly and a plurality of spacing subassemblies on the oxygen rifle dolly.
The following is a further optimization of the above technical solution according to the present invention:
The first guide supporting mechanism comprises a plurality of first track grooves formed in the top surface of the bottom plate, a plurality of second track grooves are formed in the bottom surface of the middle plate, the first track grooves and the second track grooves are correspondingly formed, first guide supporting components are arranged between the first track grooves and the second track grooves, the first guide supporting components are fixedly arranged in the first track grooves corresponding to the first guide supporting components, and the first guide supporting components are in sliding connection with the second track grooves corresponding to the first guide supporting components.
Further optimizing: the first guide support assembly comprises two support blocks which are arranged in parallel at a certain distance, the two support blocks are fixedly connected with the bottom plate, one sides of the two support blocks, which are close to each other, are fixedly connected with connecting columns, one ends of the two connecting columns, which are close to each other, are fixedly connected with check blocks, and balls are arranged between the two check blocks.
Further optimizing: a gap is arranged between the bottom plate and the middle plate, and balls in the first track groove and the second track groove play a supporting role on the middle plate.
Further optimizing: the second guide supporting mechanism comprises a plurality of third track grooves formed in the top surface of the middle plate, the third track grooves are vertically distributed with the first track grooves, a plurality of fourth track grooves are formed in the bottom surface of the upper panel, second guide supporting components are arranged between the third track grooves and the fourth track grooves, the second guide supporting components are fixedly installed in the third track grooves corresponding to the second guide supporting components, and the second guide supporting components are connected with the fourth track grooves corresponding to the second guide supporting components in a sliding mode.
Further optimizing: the structure of the second guide supporting component is the same as that of the first guide supporting component, and a gap is arranged between the upper panel and the middle plate.
Further optimizing: the limiting component comprises a fixed plate, the fixed plate is fixedly connected with the oxygen lance trolley, a connecting plate is detachably and fixedly connected above the fixed plate through bolts, and a limiting plate is fixedly connected to the top surface of the connecting plate.
Further optimizing: the auxiliary fixing assembly comprises a first supporting plate, the first supporting plate is fixedly connected with the oxygen lance trolley, a screw is connected to the first supporting plate in a threaded mode, and a knob is fixedly connected to one end, far away from the middle plate, of the screw.
Further optimizing: the metal hose connecting assembly comprises an oxygen pipe and two cooling water pipes, wherein the oxygen pipe and the two cooling water pipes are fixedly connected with the upper panel, one ends of the oxygen pipe and the two cooling water pipes, which are far away from the upper panel, are fixedly connected with flanges, and gaps are formed between the oxygen pipe and the two cooling water pipes and between the oxygen pipe and the middle plate and between the oxygen pipe and the bottom plate.
Further optimizing: the male connector assembly comprises three male connectors, the three male connectors are detachably connected with the upper panel, sealing grooves are formed in the positions, corresponding to the three male connectors, of the top surface of the upper panel, first sealing rings are arranged in the sealing grooves, and a plurality of second sealing rings are sleeved on the three male connectors.
By adopting the technical scheme, the invention has ingenious conception and reasonable structure, and because the male connector is not welded and fixed with the upper panel, when the male connector is damaged or exceeds the service life, the male connector can be replaced by loosening the bolts, so that the male connector is convenient to install and detach; due to the effect of the balls, the replacement error of the oxygen lance is automatically corrected by following the two crossed track grooves, so that the female end of the oxygen lance can be quickly inserted into the male end connector, the butt joint is flexible, accurate and reliable, and the productivity is improved.
The invention will be further described with reference to the drawings and examples.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic top view of an embodiment of the present invention;
FIG. 3 is a schematic view of a cross-sectional structure of an embodiment of the present invention;
FIG. 4 is a schematic view of a partial enlarged structure at A in FIG. 3;
FIG. 5 is a schematic view illustrating a position structure of a first guide support assembly according to an embodiment of the present invention;
fig. 6 is a schematic view illustrating a position structure of a second guide supporting component according to an embodiment of the present invention.
In the figure: 1-a bottom plate; 101-a first track groove; 2-an upper panel; 3-an intermediate plate; 301-a second track groove; 302-a third track groove; 4-a first guide support assembly; 401-supporting blocks; 402-connecting columns; 403-stop; 404-balls; 5-a limiting assembly; 501-a fixed plate; 502-connecting plates; 503-limiting plates; 6-an auxiliary fixing assembly; 601-a first support plate; 602-screw; 603-a knob; 7-a metal hose connection assembly; 701-an oxygen tube; 702-cooling water pipes; 703-a flange; 8-male connector assembly; 801-male end connector; 802-a first sealing ring; 803-a second seal ring; 9-locking the assembly; 901-a second support plate; 902-a rotating shaft; 903-locking bar; 904-locking the cap; 10-a guard plate assembly; 1001-first guard; 1002-second guard.
Detailed Description
As shown in fig. 1-6, a converter oxygen lance quick-change device comprises a bottom plate 1 fixedly connected to an oxygen lance trolley (not shown in the drawings), an upper panel 2 is arranged above the bottom plate 1, a middle plate 3 is arranged between the upper panel 2 and the bottom plate 1, a first guide supporting mechanism is arranged between the middle plate 3 and the bottom plate 1, a second guide supporting mechanism is arranged between the middle plate 3 and the upper panel 2, the first guide supporting mechanism and the second guide supporting mechanism are vertically distributed, a metal hose connecting assembly 7 is fixedly connected below the upper panel 2, the metal hose connecting assembly 7 extends to the lower side of the bottom plate 1 through the middle plate 3 and the bottom plate 1, gaps are respectively arranged between the metal hose connecting assembly 7 and the middle plate 3 and the bottom plate 1, a male end joint assembly 8 can be detachably and fixedly connected above the upper panel 2, and an auxiliary fixing assembly 6 and four limiting assemblies 5 are fixedly connected on the oxygen lance trolley.
In this embodiment, the number of the limiting members 5 may be three or more.
The first guide supporting mechanism comprises a plurality of first track grooves 101 formed in the top surface of the bottom plate 1, a plurality of second track grooves 301 are formed in the bottom surface of the middle plate 3, the first track grooves 101 and the second track grooves 301 are correspondingly formed, first guide supporting components 4 are arranged between the first track grooves 101 and the second track grooves 301, the first guide supporting components 4 are fixedly installed in the first track grooves 101 corresponding to the first guide supporting components, and the first guide supporting components 4 are slidably connected with the second track grooves 301 corresponding to the first guide supporting components.
The first guiding support assembly 4 comprises two support blocks 401 which are arranged in parallel at a certain distance, the two support blocks 401 are fixedly connected with the bottom plate 1, connecting columns 402 are fixedly connected to one sides, close to each other, of the two support blocks 401, check blocks 403 are fixedly connected to one ends, close to each other, of the two connecting columns 402, and balls 404 are arranged between the two check blocks 403.
A gap is provided between the bottom plate 1 and the intermediate plate 3, and balls 404 located in the first track groove 101 and the second track groove 301 support the intermediate plate 3.
In such design, the middle plate 3 can move relatively to the bottom plate 1 along the length direction of the first track groove 101 conveniently, the plurality of balls 404 can effectively support the middle plate 3, and the ball structure of the balls 404 can reduce the friction force between the middle plate 3 and the bottom plate 1, so that the relative movement between the middle plate 3 and the bottom plate 1 is smoother.
The connecting post 402 is made of a rubber material to provide cushioning for the operation of the ball 404.
The second guiding and supporting mechanism comprises a plurality of third track grooves 302 formed in the top surface of the middle plate 3, the third track grooves 302 are vertically distributed with the first track grooves 101, a plurality of fourth track grooves are formed in the bottom surface of the upper panel 2, second guiding and supporting components are arranged between the third track grooves 302 and the fourth track grooves, the second guiding and supporting components are fixedly installed in the third track grooves 302 corresponding to the second guiding and supporting components, and the second guiding and supporting components are slidably connected with the fourth track grooves corresponding to the second guiding and supporting components.
The structure of the second guide support assembly is the same as that of the first guide support assembly 4.
A gap is provided between the upper panel 2 and the intermediate panel 3.
By means of the design, the upper panel 2 can conveniently move relative to the middle plate 3 along the length direction of the third track groove 302, the middle plate 3 can be matched with the bottom plate 1 to move relative to the bottom plate 1 along the length direction of the first track groove 101, the third track groove 302 and the first track groove 101 are vertically arranged, the female end of an oxygen lance and the male end connector assembly 8 of the oxygen lance fixedly connected to the oxygen lance trolley can conveniently be quickly installed, and the self-adaption is good.
The limiting assembly 5 comprises a fixing plate 501, wherein the fixing plate 501 is fixedly connected with an oxygen lance trolley, a connecting plate 502 is detachably and fixedly connected above the fixing plate 501 through bolts, and a limiting plate 503 is fixedly connected to the top surface of the connecting plate 502.
The cross-sectional shape of the limiting plate 503 is an "L" shaped structure.
So designed, the limiting plate 503 defines the position of the intermediate plate 3 and the upper panel 2 in the vertical direction thereof.
The auxiliary fixing assembly 6 comprises a first supporting plate 601, the first supporting plate 601 is fixedly connected with the oxygen lance trolley, a screw 602 is connected to the first supporting plate 601 in a threaded mode, and a knob 603 is fixedly connected to one end, far away from the middle plate 3, of the screw 602.
By the design, after the installation of the female end and the male end connector assembly 8 of the oxygen lance is completed, the screw 602 is tightly propped against the middle plate 3 by rotating the knob 603, so that the metal hose connecting assembly 7 and the male end connector assembly 8 fixedly connected on the upper panel 2 are ensured to be in a stable state relative to the oxygen lance trolley.
The metal hose connecting assembly 7 comprises an oxygen pipe 701 and two cooling water pipes 702, wherein the oxygen pipe 701 and the two cooling water pipes 702 are fixedly connected with the upper panel 2, and a flange 703 is fixedly connected to one end, far away from the upper panel 2, of the oxygen pipe 701 and the two cooling water pipes 702.
Gaps are arranged between the oxygen pipes 701 and the two cooling water pipes 702 and the middle plate 3 and the bottom plate 1.
The male terminal assembly 8 includes three male terminals 801, and the three male terminals 801 are detachably connected to the upper panel 2 by bolts.
By means of the design, when the male end joint 801 is damaged due to improper operation in the steelmaking process or the male end joint 801 exceeds the service life, the male end joint 801 can be replaced only by loosening bolts, so that the male end joint 801 is convenient to install and detach, the situation that the damaged male end is required to be cut by a traditional structure and a new male end is welded again is avoided, the time cost is greatly reduced, the cost is reduced, the efficiency is improved, and the productivity is improved.
The top surface of the upper panel 2 and the positions corresponding to the three male connectors 801 are respectively provided with a sealing groove, and the sealing grooves are respectively internally provided with a first sealing ring 802.
The first seal ring 802 is an O-ring.
A plurality of second sealing rings 803 are sleeved on the three male connectors 801.
The second seal 803 is an O-ring seal.
The top of three male end joints 801 are all provided with chamfers to facilitate insertion of the female end of the oxygen lance.
Three locking components 9 are arranged on the oxygen lance trolley, so that the oxygen lance trolley is convenient to fix after the installation of the female end and the male end connector component 8 is completed through the locking components 9.
In this embodiment, the number of the locking units 9 may be three or more.
The locking assembly 9 comprises two second support plates 901 which are arranged in parallel at a certain distance, a locking rod 903 is rotatably connected between the two second support plates 901 through a rotating shaft 902, and one end of the locking rod 903 far away from the second support plates 901 is in threaded connection with a locking cap 904.
A guard plate assembly 10 is provided at the outer edge of the upper panel 2.
The guard board assembly 10 comprises a first guard board 1001, the shape of the first guard board 1001 is matched with that of the outer edge of the upper panel 2 and is fixedly connected with the first guard board 1001, a second guard board 1002 is fixedly connected below the first guard board 1001, and the lower end of the second guard board 1002 is tightly contacted with the oxygen lance trolley.
By the design, dust and dust are effectively prevented from entering the bottom plate 1 and the upper panel 2 to be accumulated in the severe steelmaking environment, the dustproof effect is good, the first guard plate 1001 of the upper half part is made of steel plate materials, the support is ensured to be firmer, the second guard plate 1002 of the lower half part is made of rubber materials, the sealing effect is enhanced, and the flexible movement of the upper panel 2 is not affected.
When the oxygen lance is replaced, after the female end of the oxygen lance contacts the male end joint 801, the port guide is used for automatically adjusting the butt joint, at this time, due to the action of the ball 404, the oxygen lance replacement error is automatically corrected by following two crossed track grooves, so that the female end of the oxygen lance can be quickly inserted into the male end joint 801, after the butt joint is accurate, the oxygen lance is locked and fixed through the locking assembly 9, then the screw 602 is tightly abutted against the middle plate 3 by rotating the knob 603, and the middle plate 3 is locked to move, so that the oxygen lance replacement is completed.
When the oxygen lance is disassembled, the reverse procedure of the replacement is followed.
Alterations, modifications, substitutions and variations of the embodiments herein will be apparent to those of ordinary skill in the art in light of the teachings of the present invention without departing from the spirit and principles of the invention.
Claims (10)
1. The utility model provides a converter oxygen rifle quick change device, includes bottom plate (1) of rigid coupling on the oxygen rifle dolly, its characterized in that: the top of bottom plate (1) is provided with top panel (2), be provided with intermediate lamella (3) between top panel (2) and bottom plate (1), be provided with first direction supporting mechanism between intermediate lamella (3) and bottom plate (1), be provided with second direction supporting mechanism between intermediate lamella (3) and top panel (2), first direction supporting mechanism and second direction supporting mechanism lay perpendicularly, the below rigid coupling of top panel (2) has metal collapsible tube coupling assembling (7), metal collapsible tube coupling assembling (7) pass intermediate lamella (3) and bottom plate (1) and extend to the below of bottom plate (1), all be provided with the clearance between metal collapsible tube coupling assembling (7) and intermediate lamella (3) and bottom plate (1), the rigid coupling has male end connector assembly (8) in the top detachable of top panel (2), the rigid coupling has supplementary fixed subassembly (6) and a plurality of spacing subassembly (5) on the oxygen rifle dolly.
2. The converter lance quick change device of claim 1, wherein: the first guide supporting mechanism comprises a plurality of first track grooves (101) formed in the top surface of the bottom plate (1), a plurality of second track grooves (301) are formed in the bottom surface of the middle plate (3), the first track grooves (101) and the second track grooves (301) are correspondingly arranged, first guide supporting components (4) are arranged between the first track grooves (101) and the second track grooves (301), the first guide supporting components (4) are fixedly installed in the first track grooves (101) corresponding to the first guide supporting components, and the first guide supporting components (4) are in sliding connection with the second track grooves (301) corresponding to the first guide supporting components.
3. The converter lance quick change device of claim 2, wherein: the first guide support assembly (4) comprises two support blocks (401) which are arranged in parallel at a certain distance, the two support blocks (401) are fixedly connected with the bottom plate (1), connecting columns (402) are fixedly connected to one sides, close to each other, of the two support blocks (401), check blocks (403) are fixedly connected to one ends, close to each other, of the two connecting columns (402), and balls (404) are arranged between the two check blocks (403).
4. A converter lance quick change apparatus according to claim 3, wherein: a gap is arranged between the bottom plate (1) and the middle plate (3), and balls (404) positioned in the first track groove (101) and the second track groove (301) play a supporting role on the middle plate (3).
5. The converter oxygen lance quick change device of claim 4 wherein: the second guide supporting mechanism comprises a plurality of third track grooves (302) formed in the top surface of the middle plate (3), the third track grooves (302) are vertically distributed with the first track grooves (101), a plurality of fourth track grooves are formed in the bottom surface of the upper panel (2), second guide supporting components are arranged between the plurality of third track grooves (302) and the plurality of fourth track grooves, the second guide supporting components are fixedly installed in the third track grooves (302) corresponding to the second guide supporting components, and the second guide supporting components are in sliding connection with the fourth track grooves corresponding to the second guide supporting components.
6. The converter oxygen lance quick change device of claim 5 wherein: the structure of the second guide support component is the same as that of the first guide support component (4), and a gap is arranged between the upper panel (2) and the middle plate (3).
7. The converter oxygen lance quick change device of claim 6 wherein: the limiting assembly (5) comprises a fixing plate (501), the fixing plate (501) is fixedly connected with the oxygen lance trolley, a connecting plate (502) is detachably and fixedly connected above the fixing plate (501) through bolts, and a limiting plate (503) is fixedly connected to the top surface of the connecting plate (502).
8. The converter lance quick change device of claim 7 wherein: the auxiliary fixing assembly (6) comprises a first supporting plate (601), the first supporting plate (601) is fixedly connected with the oxygen lance trolley, a screw (602) is connected to the first supporting plate (601) in a threaded mode, and a knob (603) is fixedly connected to one end, far away from the middle plate (3), of the screw (602).
9. The converter oxygen lance quick change device of claim 8 wherein: the metal hose connecting assembly (7) comprises an oxygen pipe (701) and two cooling water pipes (702), wherein the oxygen pipe (701) and the two cooling water pipes (702) are fixedly connected with the upper panel (2), one ends of the oxygen pipe (701) and the two cooling water pipes (702), which are far away from the upper panel (2), are fixedly connected with flanges (703), and gaps are formed between the oxygen pipe (701) and the two cooling water pipes (702) and between the middle plate (3) and the bottom plate (1).
10. The converter lance quick change device of claim 9 wherein: the male connector assembly (8) comprises three male connectors (801), the three male connectors (801) are detachably connected with the upper panel (2), sealing grooves are formed in the positions, corresponding to the three male connectors (801), of the top surface of the upper panel (2), first sealing rings (802) are arranged in the sealing grooves, and a plurality of second sealing rings (803) are sleeved on the three male connectors (801).
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CN202410410589.6A CN118006862B (en) | 2024-04-08 | 2024-04-08 | Converter oxygen rifle quick change device |
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CN202410410589.6A CN118006862B (en) | 2024-04-08 | 2024-04-08 | Converter oxygen rifle quick change device |
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CN208857327U (en) * | 2018-06-15 | 2019-05-14 | 山东崇盛冶金氧枪有限公司 | A kind of converter oxygen gun gun breech fast replacing device |
CN214529109U (en) * | 2021-04-01 | 2021-10-29 | 潍坊峻林冶金工程技术有限公司 | Oxygen lance quick change device |
CN113337668A (en) * | 2021-06-15 | 2021-09-03 | 中钢集团鞍山热能研究院有限公司 | Converter self-adaptation oxygen rifle tail quick change device |
CN215757460U (en) * | 2021-09-12 | 2022-02-08 | 金鼎重工有限公司 | Oxygen lance lifting trolley with quick replacement oxygen lance |
CN114085945A (en) * | 2021-11-20 | 2022-02-25 | 潍坊峻林冶金工程技术有限公司 | Novel oxygen lance lifting trolley |
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