CN211304760U - Ladle covering and uncovering device for LF (ladle furnace) - Google Patents
Ladle covering and uncovering device for LF (ladle furnace) Download PDFInfo
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- CN211304760U CN211304760U CN201921954208.1U CN201921954208U CN211304760U CN 211304760 U CN211304760 U CN 211304760U CN 201921954208 U CN201921954208 U CN 201921954208U CN 211304760 U CN211304760 U CN 211304760U
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Abstract
The ladle covering and uncovering device comprises a fixed beam supporting mechanism, a movable beam telescopic mechanism and a driving mechanism, wherein the movable beam telescopic mechanism reciprocates on the fixed beam supporting mechanism, a fixed beam rack is arranged on the fixed beam supporting mechanism, a movable beam rack is arranged on the movable beam telescopic mechanism, the driving mechanism is arranged between the movable beam telescopic mechanism and the fixed beam supporting mechanism, and a synchronous gear group in the driving mechanism is meshed with the fixed beam rack and the movable beam rack simultaneously. The utility model solves the problem that the LF furnace buggy ladle track is arranged perpendicular to the converter track and the situation that the covering and uncovering devices can not be arranged on line due to the limited installation space of the LF furnace station through the practical application of a factory; the steel ladle is covered to effectively block heat exchange between molten steel and air, reduce the heat radiation loss of the steel ladle, reduce the tapping temperature of a converter, reduce inclusions in the molten steel, improve the quality of casting blanks and prolong the service life of steel ladle refractory materials.
Description
Technical Field
The utility model relates to a belong to metal smelting technical field, especially relate to a LF stove ladle adds and takes off lid device, mainly be applied to adding of ladle and cover in the metal smelting.
Background
In recent years, how to improve the smelting level, reduce the energy consumption and reduce the production cost has become an important research topic of iron and steel enterprises. In the steelmaking process, the temperature of molten steel is taken as an important technical index and technological parameter in steelmaking and continuous casting processes, and has important influence on steelmaking production level and casting blank quality. Research shows that there are two main ways for the heat loss of molten steel: firstly, heat conduction between molten steel and refractory materials; secondly, the top of the ladle is opened, and the molten steel radiates heat to the air. Under normal conditions, the temperature of a ladle lining before the ladle is filled with molten steel is about 1100 ℃, which is far lower than the temperature of the molten steel, after the molten steel is poured into the ladle and is contacted with the ladle lining, the temperature of the ladle lining is close to the temperature of the molten steel, usually about 1500 ℃, so that the temperature of the molten steel is greatly reduced, the tapping temperature of a converter can be artificially increased in the steelmaking process to prevent the molten steel from being solidified in the ladle, and the tapping temperature of the converter is usually about 1650-1700 ℃ and is far higher than the pouring temperature of the molten steel. The tapping temperature of the converter molten steel is closely related to the quality of a casting blank, and the higher the tapping temperature is, the higher the oxygen content in the steel is, so that the yield of the alloy is reduced in the tapping deoxidation alloying process, and the inclusion in the steel is greatly increased; on the other hand, taking a 150-ton ladle as an example, the heat radiation of the ladle lining to the air 5 minutes before the empty ladle is not filled with molten steel after baking is the most serious, and the heat radiation accounts for about 40% of the heat radiation loss, and the heat loss causes the temperature loss of the molten steel in the next furnace to be 10-15 ℃.
The whole-process steel ladle covering technology can effectively block heat exchange between molten steel and air, maintain refractory temperature of an empty ladle, obviously reduce heat radiation loss, reduce tapping temperature of a converter, reduce inclusions in steel, improve casting blank quality, shorten off-line baking time of the steel ladle, save a molten steel heat insulating agent, reduce gas consumption, prolong the refractory life of the steel ladle, and particularly has obvious energy-saving and consumption-reducing effects in a steel-making link.
SUMMERY OF THE UTILITY MODEL
The utility model provides a LF stove ladle adds takes off and covers device belongs to forward gear shaping structural style, the utility model is suitable for a short flow, technology arrange the technology overall arrangement that compactness, installation space are limited, LF stove buggy ladle track perpendicular to converter buggy track were arranged. The problem that the ladle covering and uncovering device cannot be arranged on line due to the limited installation space of the LF furnace station is solved; the steel ladle is covered to effectively block heat exchange between molten steel and air, so that the heat radiation loss of the steel ladle is obviously reduced, the tapping temperature of a converter is reduced, impurities in the molten steel are reduced, the casting blank quality is improved, the off-line baking time of the steel ladle is shortened, a molten steel heat insulating agent is saved, the gas consumption is reduced, the service life of steel ladle refractory materials is prolonged, and considerable economic benefits are created for steel plants.
In order to achieve the above object, the utility model adopts the following technical scheme:
the ladle covering and uncovering device comprises a fixed beam supporting mechanism, a movable beam telescopic mechanism and a driving mechanism, wherein the movable beam telescopic mechanism reciprocates on the fixed beam supporting mechanism, a fixed beam rack is arranged on the fixed beam supporting mechanism, a movable beam rack is arranged on the movable beam telescopic mechanism, the driving mechanism is arranged between the movable beam telescopic mechanism and the fixed beam supporting mechanism, and a synchronous gear group in the driving mechanism is meshed with the fixed beam rack and the movable beam rack simultaneously.
The fixed beam supporting mechanism comprises a fixed beam, a moving beam riding wheel, a moving beam side guide wheel, a supporting tooth guide wheel, a fixed beam rack and a pinch roller assembly, the fixed beam is of a box-shaped frame structure formed by welding two longitudinal beams and a plurality of cross beams, the moving beam riding wheel and the moving beam side guide wheel are installed on the two longitudinal beams, the fixed beam rack is installed on the inner sides of the two longitudinal beams, a hydraulic cylinder support is installed on a tail cross beam of the fixed beam, the supporting tooth guide wheel is installed on the outer side of the two longitudinal beams at the front end of the fixed beam, the pinch roller assembly stretches across the moving beam and is arranged, the pinch roller assembly comprises a pinch roller cross beam, a pinch roller stand column and a moving beam pinch roller, the pinch roller stand column is fixed on the outer sides of the two longitudinal beams of the fixed beam, the pinch roller cross beam is fixed on the top of the.
The movable beam telescopic mechanism comprises a movable beam, hump tooth longitudinal beams, movable beam racks and supporting tooth hanging beams, wherein the movable beam is of a box-shaped frame structure formed by welding two longitudinal beams and a plurality of cross beams, the supporting tooth hanging beams are fixed on the outer sides of the two longitudinal beams at the front end of the movable beam, the hump tooth longitudinal beams are fixed in the middle position of the front end of the movable beam, the movable beam racks are fixed on the inner sides of the two longitudinal beams, and wear-resistant lining plates are arranged on the upper surface and the lower surface of the two longitudinal beams.
The support tooth hanging beam is hinged with support teeth, a support tooth spring push rod is arranged on the support tooth hanging beam, and hump teeth are arranged on the hump tooth longitudinal beam.
The driving mechanism comprises a hydraulic cylinder and a synchronous gear set, the hydraulic cylinder is installed on a tail cross beam of the fixed beam, and the hydraulic cylinder drives the synchronous gear set to reciprocate.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model is practically applied in factories, on one hand, the LF furnace covering and uncovering device is arranged at the ladle seat tank position, thus solving the problem that the LF furnace covering and uncovering device cannot be arranged on line because the installation space of the LF furnace station is limited and the LF furnace ladle car track is arranged perpendicular to the converter ladle car track; on the other hand, the steel ladle is covered to effectively block heat exchange between the molten steel and air, so that the heat radiation loss of the steel ladle is obviously reduced, the tapping temperature of a converter is reduced, impurities in the molten steel are reduced, the casting blank quality is improved, the off-line baking time of the steel ladle is shortened, a molten steel heat insulating agent is saved, the gas consumption is reduced, the service life of steel ladle refractory materials is prolonged, and considerable economic benefits are created for steel plants.
To the steel mill that most adoption short process technology arranged, at the whole in-process that takes off the lid of implementation ladle, the LF stove regional often can appear because installation space is limited, and LF stove buggy ladle track perpendicular to converter buggy ladle track arranges, leads to LF stove regional arrangement to add and take off the lid machine difficulty, the utility model discloses combine the production actual conditions, provide one kind can arrange the ladle at LF stove buggy ladle seat jar position and add and take off the lid device, fully saved station space, guaranteed the antecedence of production.
Drawings
FIG. 1 is a three-dimensional view of a covering and uncovering device of an LF furnace.
FIG. 2 is a view showing the avoiding state of the LF furnace before the covering and uncovering device uncovers the LF furnace.
FIG. 3 is a drawing showing the cover-covering and uncovering state of the LF furnace cover-covering and uncovering device.
Fig. 4 is an assembly view of the walking beam telescoping mechanism.
Fig. 5 is an assembly view of the fixed beam support mechanism.
Fig. 6 is an assembly view of the timing gear set and the fixed beam support mechanism.
FIG. 7 is a synchronizing gear set component assembly view.
In the figure: 1-fixed beam, 2-movable beam riding wheel, 3-movable beam side guide wheel, 4-movable beam, 5-movable beam pressing wheel, 6-pressing wheel cross beam, 7-pressing wheel vertical column, 8-movable beam rack, 9-fixed beam rack, 10-synchronous gear set, 11-hydraulic cylinder, 12-hump tooth, 13-supporting tooth, 14-supporting tooth guide wheel, 15-supporting tooth spring push rod, 16-supporting tooth hanging beam, 17-wear-resistant lining plate, 18-hump tooth longitudinal beam and 19-hydraulic cylinder support.
Detailed Description
The utility model discloses specific structure explains in detail:
referring to fig. 1-6, the ladle covering and uncovering device for the LF furnace comprises a fixed beam supporting mechanism, a movable beam telescopic mechanism and a driving mechanism, wherein the movable beam telescopic mechanism reciprocates on the fixed beam supporting mechanism, a fixed beam rack 9 is arranged on the fixed beam supporting mechanism, a movable beam rack 8 is arranged on the movable beam telescopic mechanism, the driving mechanism is arranged between the movable beam telescopic mechanism and the fixed beam supporting mechanism, and a synchronous gear group 10 in the driving mechanism is simultaneously meshed with the fixed beam rack 9 and the movable beam rack 8.
The fixed beam supporting mechanism comprises a fixed beam 1, a movable beam riding wheel 2, a movable beam side guide wheel 3, a supporting tooth guide wheel 14, a fixed beam rack 9 and a pinch roller assembly, wherein the fixed beam 1 is of a box-shaped frame structure formed by welding two longitudinal beams and a plurality of cross beams, the movable beam riding wheel 2 and the movable beam side guide wheel 3 are arranged on the two longitudinal beams, the fixed beam rack 9 is arranged on the inner sides of the two longitudinal beams, a hydraulic cylinder support 19 is arranged on a tail cross beam of the fixed beam 1, the supporting tooth guide wheel 14 is arranged on the outer sides of the two longitudinal beams at the front end of the fixed beam 1, the pinch roller assembly is arranged on the movable beam in a crossing manner, the pinch roller assembly comprises a pinch roller cross beam 6, a pinch roller upright post 7 and a movable beam pinch roller 5, the pinch roller upright post 7 is fixed on the outer sides of the two longitudinal beams of the fixed beam, the, the moving beam pinch roller 5 is pressed on the wear-resistant lining plate at the top of the moving beam.
The movable beam telescopic mechanism comprises a movable beam 4, a hump tooth longitudinal beam 18, a movable beam rack 8 and a supporting tooth hanging beam 16, wherein the movable beam 4 is of a box-shaped frame structure formed by welding two longitudinal beams and a plurality of cross beams, the supporting tooth hanging beam 16 is fixed on the outer sides of the two longitudinal beams at the front end of the movable beam 4, the hump tooth longitudinal beam 18 is fixed at the middle position of the front end of the movable beam 4, the movable beam rack 8 is fixed on the inner sides of the two longitudinal beams, and wear-resistant lining plates 17 are arranged on the upper surface and the lower surface of the two longitudinal beams. The moving beam pinch roller 5 is pressed on the wear-resistant lining plate 17, the two longitudinal beams of the moving beam 4 are arranged on the moving beam riding wheel 2, and the moving beam side guide wheels 3 are distributed on the outer sides of the two longitudinal beams of the moving beam 4.
The support tooth hanging beam 16 is hinged with the support teeth 13, and the support tooth hanging beam 16 is provided with a support tooth spring push rod 15; in the fully retracted state of the movable beam 4, the supporting teeth 13 swing to the vertical state, the supporting tooth spring push rods 15 are in the retracted state, and the hump teeth 12 are fixed on the hump teeth longitudinal beam 18.
The tail ends of the supporting teeth 13 are provided with three sections of treads of an inclined section, an arc section and a straight section, and in the process of extending and retracting the movable beam, the three sections of treads of the supporting teeth 13 are respectively contacted with the supporting teeth guide wheels 14, so that the supporting teeth 13 can be swung up and fall down.
The driving mechanism comprises a hydraulic cylinder 11 and a synchronous gear set 10, the hydraulic cylinder 11 is installed on a tail cross beam of the fixed beam 1, and the hydraulic cylinder 11 drives the synchronous gear set 10 to do reciprocating motion.
The utility model discloses detailed description of specific spare part function:
the fixed beam supporting mechanism takes a fixed beam 1 as a framework, and a movable beam riding wheel 2 is arranged on the fixed beam supporting mechanism and is used for supporting a movable beam 4; installing a movable beam side guide wheel 3 for providing a lateral supporting force for a movable beam 4; a supporting tooth guide wheel 14 is arranged and used for providing supporting force for the supporting tooth 13 to swing up and fall down, and a fixed beam rack 9 is arranged and used for forming a motion executing mechanism together with the synchronous gear set 10; the movable beam pinch roller assembly is installed, and the movable beam pinch roller 5 is installed on the fixed beam 1 through a pinch roller cross beam 6 and a pinch roller upright post 7 and used for providing downward pressure for the movable beam 4.
The movable beam telescopic mechanism takes a movable beam 4 as a framework, and a hump tooth longitudinal beam 18 is arranged on the movable beam telescopic mechanism and used for fixing a hump tooth 12; the mounting support tooth hanging beam 16 is used for providing a support and swing hinge point for the support tooth 13, a support tooth spring push rod 15 is mounted on the support tooth hanging beam 16 and used for providing thrust for the support tooth 13 in the falling process, and when the support tooth 13 is placed in a vertical state, the support tooth spring push rod 15 is in a retraction state; a moving beam rack 8 is arranged and used for forming a motion executing mechanism together with a synchronous gear set 10; and a wear-resistant lining plate 17 is arranged and used for providing a walking tread for the movable beam riding wheel 2 and the movable beam pinch roller 5.
The driving mechanism takes a hydraulic cylinder 11 as a power element, is arranged on a cross beam at the tail part of the fixed beam 1 through a hydraulic cylinder support 19 and is used for providing driving force for the synchronous gear set 10; the synchronous gear set 10 is hinged to the head of the hydraulic cylinder 11, and forms a motion executing mechanism together with the fixed beam rack 9 and the movable beam rack 8, on one hand, the movable beam 4 is extended and retracted through the reciprocating motion of the synchronous gear set 10 between the fixed beam rack 9 and the movable beam rack 8, the synchronous gear set 10 realizes synchronous meshing of the gear and the rack on two sides, and the two support teeth 13 can still be synchronously extended and retracted in real time when under the action of unbalance loading.
On the other hand, the synchronous gear set 10, the fixed beam rack 9 and the movable beam rack 8 jointly form a stroke amplification mechanism, the telescopic stroke of the movable beam 4 is 2 times of the stroke of the hydraulic cylinder 11, and the problem of instability of a large-stroke hydraulic cylinder pressure rod is solved.
The utility model discloses specific implementation method
The ladle is lifted to a ladle seat pot by a crane, at the moment, the covering and uncovering device is in a standby position, namely, the movable beam 4 is completely retracted, the supporting teeth 13 are swung to be in a vertical state, the straight section treads of the supporting teeth 13 are in contact with the supporting tooth guide wheels 14, and the ladle seat pot is finished. The hydraulic cylinder 11 is started, the movable beam 4 extends out, the supporting teeth 13 fall under the combined action of the supporting tooth spring push rod 15 and the self weight of the supporting teeth 13 to enter a cover opening state, the movable beam 4 continues to extend out to start to open the cover, the steel ladle cover hinge shaft rises along the gear shaping inclined plane and finally is deposited in the groove of the hump teeth 12, at the moment, the steel ladle cover hanging lugs are completely separated from the steel ladle hinge seat shaft, the movable beam 4 extends out completely to the belt cover avoiding position, the cover opening is finished, and the steel ladle vehicle is driven to the refining position. When refining is finished, the ladle car returns to the ladle hanging position, the hydraulic cylinder 11 is started, the movable beam 4 retracts, capping is started, the hinge shaft of the ladle cap descends along the gear shaping inclined plane until the ladle cap is covered, the movable beam 4 retracts completely, the supporting teeth 13 swing to be in a vertical state, capping is finished, and the ladle with the cap is hung to the next station by the crown block.
Claims (5)
1. The ladle covering and uncovering device is characterized by comprising a fixed beam supporting mechanism, a movable beam telescopic mechanism and a driving mechanism, wherein the movable beam telescopic mechanism reciprocates on the fixed beam supporting mechanism, a fixed beam rack is arranged on the fixed beam supporting mechanism, a movable beam rack is arranged on the movable beam telescopic mechanism, the driving mechanism is arranged between the movable beam telescopic mechanism and the fixed beam supporting mechanism, and a synchronous gear set in the driving mechanism is meshed with the fixed beam rack and the movable beam rack simultaneously to form a stroke amplifying mechanism.
2. The ladle covering and uncovering device of the LF furnace as claimed in claim 1, wherein the fixed beam support mechanism comprises a fixed beam, a moving beam riding wheel, a moving beam side guide wheel, a support tooth guide wheel, a fixed beam rack, and a pinch roller assembly, the fixed beam is a box-shaped frame structure formed by welding two longitudinal beams and a plurality of cross beams, the moving beam riding wheel and the moving beam side guide wheel are installed on the two longitudinal beams, the fixed beam rack is installed on the inner sides of the two longitudinal beams, a hydraulic cylinder support is installed on a tail cross beam of the fixed beam, the support tooth guide wheel is installed on the outer sides of the two longitudinal beams at the front end of the fixed beam, the pinch roller assembly is arranged across the moving beam, the pinch roller assembly comprises a pinch roller cross beam, a pinch roller upright column and a moving beam pinch roller, the pinch roller upright column is fixed on the outer sides of the two longitudinal beams of the fixed beam, the pinch roller cross, the moving beam pinch roller is pressed on the top of the moving beam.
3. The ladle covering and uncovering device of the LF furnace is characterized in that the movable beam telescopic mechanism comprises a movable beam, a hump tooth longitudinal beam, a movable beam rack and a supporting tooth hanging beam, the movable beam is of a box-shaped frame structure formed by welding two longitudinal beams and a plurality of cross beams, the supporting tooth hanging beam is fixed on the outer sides of the two longitudinal beams at the front end of the movable beam, the hump tooth longitudinal beam is fixed in the middle position of the front end of the movable beam, the movable beam rack is fixed on the inner sides of the two longitudinal beams, and wear-resistant lining plates are arranged on the upper surface and the lower surface of the two longitudinal beams.
4. The ladle covering and uncovering device of the LF furnace as claimed in claim 3, wherein support teeth are hinged on the support tooth hanging beam, a support tooth spring push rod is arranged on the support tooth hanging beam, and hump teeth are arranged on the hump tooth longitudinal beam.
5. The ladle covering and uncovering device of the LF furnace as claimed in claim 1, wherein the driving mechanism comprises a hydraulic cylinder and a synchronous gear set, the hydraulic cylinder is mounted on a tail cross beam of the fixed beam, and the hydraulic cylinder drives the synchronous gear set to reciprocate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921954208.1U CN211304760U (en) | 2019-11-13 | 2019-11-13 | Ladle covering and uncovering device for LF (ladle furnace) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921954208.1U CN211304760U (en) | 2019-11-13 | 2019-11-13 | Ladle covering and uncovering device for LF (ladle furnace) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211304760U true CN211304760U (en) | 2020-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921954208.1U Active CN211304760U (en) | 2019-11-13 | 2019-11-13 | Ladle covering and uncovering device for LF (ladle furnace) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211304760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110860679A (en) * | 2019-11-13 | 2020-03-06 | 鞍钢重型机械有限责任公司 | LF furnace steel ladle covering and uncovering device and using method thereof |
-
2019
- 2019-11-13 CN CN201921954208.1U patent/CN211304760U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110860679A (en) * | 2019-11-13 | 2020-03-06 | 鞍钢重型机械有限责任公司 | LF furnace steel ladle covering and uncovering device and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220815 Address after: 114000 a, Jianguo East Road, Lishan District, Anshan City, Liaoning Province Patentee after: Anshan Iron and steel heavy machinery design and Research Institute Co.,Ltd. Address before: 114000 a, Jianguo East Road, Lishan District, Anshan City, Liaoning Province Patentee before: ANGANG HEAVY MACHINERY Co.,Ltd. |
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| TR01 | Transfer of patent right |