CN113618056A - Anti-loosening device for sliding plate oil cylinder of molten steel tank and control method - Google Patents
Anti-loosening device for sliding plate oil cylinder of molten steel tank and control method Download PDFInfo
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- CN113618056A CN113618056A CN202110931785.4A CN202110931785A CN113618056A CN 113618056 A CN113618056 A CN 113618056A CN 202110931785 A CN202110931785 A CN 202110931785A CN 113618056 A CN113618056 A CN 113618056A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 71
- 239000010959 steel Substances 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000009434 installation Methods 0.000 claims abstract description 33
- 239000003921 oil Substances 0.000 claims description 191
- 238000005266 casting Methods 0.000 claims description 13
- 239000010720 hydraulic oil Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 7
- 238000009749 continuous casting Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000010079 rubber tapping Methods 0.000 claims 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 abstract description 3
- 235000011613 Pinus brutia Nutrition 0.000 abstract description 3
- 241000018646 Pinus brutia Species 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 11
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- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005465 channeling Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000009628 steelmaking 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
- B22D41/14—Closures
- B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
- B22D41/38—Means for operating the sliding gate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The anti-loosening device comprises a water gap sliding plate, a sliding plate oil cylinder, a locking oil cylinder and an installation base, wherein the installation base is located on one side of the bottom of the molten steel tank, the sliding plate oil cylinder is embedded into the installation base, the locking oil cylinder is sleeved at the front end inside the sliding plate oil cylinder, a piston sleeve is arranged in the locking oil cylinder, and a piston rod of the sliding plate oil cylinder penetrates through the piston sleeve and enters the water gap sliding plate. The device is equipped with the locking hydro-cylinder at the inside front end cover of slide hydro-cylinder, and locking hydro-cylinder rodless intracavity is equipped with spring system, and through locking hydro-cylinder rodless chamber oil feed, the piston cover that promotes locking hydro-cylinder inside stretches out forward, withstands the side of mouth of a river slide, through the reaction force of mouth of a river slide, fixes the slide hydro-cylinder inside the installation base, avoids the slide hydro-cylinder to appear the pine to take off or the slippage phenomenon.
Description
Technical Field
The application relates to the technical field of sliding plate oil cylinders, in particular to a loosening-preventing stabilizing device and a control method for a sliding plate oil cylinder of a molten steel tank of a continuous casting machine.
Background
The continuous casting machine is a device for continuously casting refined high-temperature molten steel into a casting blank with a certain cross section and a certain size. After the molten steel tank fully loaded with high-temperature molten steel reaches the pouring position of the continuous casting machine, the molten steel is controlled to flow from the molten steel tank to the intermediate tank through the sliding plate oil cylinder, and the molten steel is retracted through a piston rod of the hydraulic oil cylinder to open the sliding water gap so that the high-temperature molten steel flows out.
The traditional installation mode of the sliding plate oil cylinder is that the sliding plate oil cylinder and the sliding plate oil cylinder installation seat, the sliding plate oil cylinder piston rod and the sliding plate T-shaped connecting rod are manually and accurately sleeved, the oil cylinder is limited by using a manual bolt, the temperature of molten steel in the molten steel tank is about 1500 ℃, the surface temperature of the sliding plate mechanism is above 100 ℃, workers need to endure long-time high-temperature baking, and potential safety hazards of scalding exist. Moreover, install the slide hydro-cylinder in the base through the manual work, because there is rocking between slide hydro-cylinder and the base, still can lead to the slide hydro-cylinder to break away from the base, lead to the unable normal control slide opening of slide hydro-cylinder, if this one step of error takes place, if can not open the slide, will lead to pouring to be interrupted, the circumstances such as molten steel time out of the stove, direct influence production technology brings great economic loss, and more serious is, if can not close after the slide is opened, perhaps can not in time adjust slide opening size, will probably take place the major incident that can not retrieve. Therefore, the key point of research of technical personnel is to guarantee the stability and the locking of slide hydro-cylinder installation, also is the technical problem that needs to solve at present urgently.
Through installation activity couple in ladle mechanism slide in the patent "pneumatic cylinder antiskid in ladle mechanism slide takes off the structure", restrict pneumatic cylinder installation handle in the use through the activity couple, and then can control the home range of pneumatic cylinder in ladle mechanism slide, improve the production security. Although this structure can effectively improve the security, when the in-service use, operation process is comparatively complicated, and the dumb, when the installation need guarantee that the hook groove of activity couple is in same height with pneumatic cylinder installation handle, and the activity couple when the installation, need and fixing device between keep certain clearance to make rotatable between the two, vacate the space when guaranteeing the activity hook groove and installing for the pneumatic cylinder.
The patent 'a slide oil cylinder assembly active assembly and disassembly system' discloses a slide oil cylinder assembly active assembly and disassembly system, which comprises a mounting seat, an oil cylinder assembly, a clamp and a robot, wherein the mounting seat is provided with a clamping groove and a joint seat; the oil cylinder assembly comprises an oil cylinder, a clamping ring matched with the clamping groove and a joint matched with the joint seat; the clamp is detachably connected with the oil cylinder, and the clamp can lock and fix the oil cylinder and can be separated from the oil cylinder; the robot is fixed with the clamp and drives the clamp to move, and the robot also controls the locking and the separation of the clamp. This application is through the normal operation of the connection of joint and adapter, snap ring and draw-in groove of guarantee hydro-cylinder subassembly, realizes the removal and the assembly of hydro-cylinder through robot and anchor clamps. The automatic assembling and disassembling system of the sliding plate oil cylinder assembly replaces manual work to assemble and disassemble the oil cylinder assembly, and labor amount of workers is reduced. The clamping ring and the joint are arranged on the oil cylinder assembly, the clamping groove and the joint seat are correspondingly arranged on the mounting seat, when the clamping ring is mounted, the clamping ring is fixedly clamped with the clamping buckle by using the robot control clamp after being locked with the oil cylinder, the clamping ring is moved to the preset position of the mounting seat, the joint is in inserted connection with the joint seat, and after the mounting is finished, the robot control clamp is separated; when the clamp needs to be detached, the robot controls the clamp to move to a preset position to be locked with the oil cylinder, then the oil cylinder assembly continues to be moved to be taken down from the mounting seat, the clamping ring is separated from the clamping groove, the joint is separated from the joint seat, and the clamp and the oil cylinder are driven to leave the mounting seat. Although this application has realized the fixed of hydro-cylinder subassembly well, and has realized automated operation, but the operating procedure is comparatively complicated, need be at the hydro-cylinder, accessories such as joint, draw-in groove, snap ring, joint seat have been set up in advance on the base, still need set up anchor clamps and play the effect of middle lock solid in the installation, the dismantlement in-process, and in the actual action, the hydro-cylinder subassembly need be supporting with the mount pad subassembly, adaptability is not high, and if the accessory such as joint, draw-in groove, snap ring, joint seat goes wrong, can not avoid the anticreep of slide hydro-cylinder in time.
Therefore, according to the existing problems, in order to prevent production and safety accidents caused by the slipping of the sliding plate cylinder, a new device capable of preventing the sliding plate cylinder from loosening is urgently needed to solve the hidden trouble.
Disclosure of Invention
In order to solve the problem of prior art, this application aim at provides a device that molten steel jar slide hydro-cylinder locking takes off, the device simple manufacture, the operation is stable, the flexible operation, overhaul convenient, and the security is high, can prevent effectively that the slide hydro-cylinder from the inside roll-off of base, avoids the emergence of safety in production accident.
In order to realize the purpose, the following technical scheme is adopted:
the application exemplarily provides a device that ladle slide hydro-cylinder locking takes off, including mouth of a river slide, slide hydro-cylinder, locking hydro-cylinder and installation base, the installation base is located ladle bottom, the embedding of slide hydro-cylinder in the installation base, the inside front end cover of slide hydro-cylinder is equipped with the locking hydro-cylinder, be equipped with the piston bush in the locking hydro-cylinder, the piston rod of slide hydro-cylinder is followed pass in the piston bush to enter the mouth of a river slide.
Further, the water gap sliding plate is arranged at the bottom of the molten steel tank and used for controlling molten steel in the molten steel tank to flow out;
the slide hydro-cylinder is located one side of mouth of a river slide, piston rod stretching out side front end is connected with circular shape fixed head, fixed head diameter is greater than mouth of a river slide side hole, be used for with mouth of a river slide with the slide hydro-cylinder is connected the slide hydro-cylinder advances when going out oil, promotes mouth of a river slide opens and shuts, through control the degree of opening and shutting of mouth of a river slide, and then control the molten steel flow of molten steel jar.
Furthermore, a hole 1 is formed in one side, close to the sliding plate oil cylinder, of the locking oil cylinder and used for accommodating the piston rod to penetrate through; a hole 2 is formed in one side, close to the water gap sliding plate, of the locking oil cylinder and is used for accommodating the piston rod and the piston sleeve to penetrate through; the piston sleeve is transversely arranged in the locking oil cylinder, one end of the piston sleeve is connected with the side surface of the locking oil cylinder close to one side of the sliding plate oil cylinder, and the other end of the piston sleeve penetrates out of the hole 2; the piston sleeve is of a hollow structure and is consistent with the hole 1 in size, and the piston rod penetrates through the hole 1, penetrates through the hole 2 together with the piston sleeve and enters the water gap sliding plate; and a vertical baffle plate is arranged in the middle of the piston sleeve and divides the locking oil cylinder into a locking oil cylinder rodless cavity and a locking oil cylinder rod cavity.
Furthermore, a gap between the piston sleeve and the piston rod is sealed by a strong sealing gasket, and the sliding plate oil cylinder and the locking oil cylinder are connected with independent hydraulic oil paths.
Furthermore, the rod-free cavity of the locking oil cylinder is connected with an oil inlet pipe, oil fed into the rod-free cavity of the locking oil cylinder pushes the piston sleeve to extend towards one side of the water gap sliding plate and prop against the side face of the water gap sliding plate, and the locking oil cylinder fixes the sliding plate oil cylinder in the mounting base by utilizing the reaction force of the water gap sliding plate.
Furthermore, a spring system is additionally arranged in the rodless cavity of the locking oil cylinder, and the pre-pressure range is 6.1-11.0 KN.
Further, the spring system is sleeved on the piston sleeve, and the spring system can be a disc spring.
Furthermore, the bottom plate of the locking oil cylinder is connected with the bottom plate of the sliding plate oil cylinder through a bolt, so that the locking oil cylinder is sleeved in the sliding plate oil cylinder.
Furthermore, the sliding plate cylinder valve stand and the locking cylinder valve stand are provided with pressure monitoring relays.
The application also provides a control method for preventing the sliding plate oil cylinder of the molten steel tank from loosening, which comprises the following steps:
step 1: the bottom of the molten steel tank is provided with a mounting base and a nozzle sliding plate, the molten steel tank is placed on a ladle of a continuous casting machine, the locking oil cylinder is sleeved in the sliding plate oil cylinder by adopting a manipulator and is embedded into the mounting base, and the front end of a piston rod of the sliding plate oil cylinder is fixed in the nozzle sliding plate;
step 2: the locking oil cylinder is used for feeding oil into the rodless cavity, the piston sleeve extends forwards to prop against the side face of the water gap sliding plate, and the locking oil cylinder fixes the sliding plate oil cylinder in the mounting base by utilizing the reaction force of the water gap sliding plate;
and step 3: the molten steel tank is ready for casting, the electromagnetic valve is opened to be electrified, hydraulic oil enters the rod cavity of the sliding plate oil cylinder through the hydraulic oil pipe, the sliding plate oil cylinder retracts, the piston rod drives the water gap sliding plate to move to one side of the sliding plate oil cylinder, and molten steel flows out of the molten steel tank to be cast;
and 4, step 4: if the locking oil cylinder is in a locking working state, oil leakage unloading is caused by high temperature and the like, a spring system in a rodless cavity of the locking oil cylinder can provide pre-pressure within the range of 6.1-11.0 KN so as to ensure that the piston sleeve always props against the side surface of a water gap sliding plate of the molten steel tank and ensure that the sliding plate oil cylinder is stably fixed in the mounting base in the casting process;
and 5: after casting is finished, the rodless cavity of the sliding plate oil cylinder feeds oil and pushes the piston rod to move forwards, so that the water gap sliding plate is driven to move forwards to block the steel outlet of the molten steel tank.
Compared with the prior art, the method has the following beneficial effects:
the device is equipped with the locking hydro-cylinder through the inside front end cover in the slide hydro-cylinder, and the no pole chamber of locking hydro-cylinder promotes the inside piston cover of locking hydro-cylinder to stretch out forward through solitary oil feed passageway, withstands the side of mouth of a river slide, through reaction force, fixes the slide hydro-cylinder inside the installation base, avoids the slide hydro-cylinder to appear the pine to take off or the slippage phenomenon.
Furthermore, in order to prevent oil leakage and unloading caused by the sealing effect of the locking oil cylinder or the quality, material, service life and the like of the locking oil cylinder, the device ensures that the prepressing force of the spring system pushes the piston sleeve to continuously prop against the side surface of the water gap sliding plate even under the unloading condition of the locking oil cylinder by arranging the spring system with certain prepressing force in the rodless cavity of the locking oil cylinder, so that the sliding plate oil cylinder is firmly fixed in the mounting base.
Furthermore, the device can assist in realizing the automation of assembling and disassembling the sliding plate oil cylinder, so that safety accidents such as high-temperature scalding and the like caused by manual insertion of a bolt in the limiting process of the oil cylinder are avoided, and the life safety of operating personnel is guaranteed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic view of the overall installation of the apparatus of the present application;
FIG. 2 is a view showing the construction of the apparatus of the present application;
reference numerals: 1-a rodless cavity of a sliding plate oil cylinder; 2-a slide plate oil cylinder; 3-the slide plate cylinder has a rod cavity; 4-a piston rod; 5, locking the oil cylinder; 6-locking the rodless cavity of the oil cylinder; 7-locking the oil cylinder with a rod cavity; 8-a piston sleeve; 9-fixing the head; 10-water gap sliding plate; 11-ladle, 12-spring system; 13-mounting a base.
Detailed Description
In order to make the objects, technical solutions and advantages of the examples of the present application clearer, the following examples are given for describing embodiments of the present application in detail, but it will be understood by those skilled in the art that the following examples are only for illustrating the present application and should not be construed as limiting the scope of the present application. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
For a better understanding of the present disclosure, and to facilitate the implementation of the present disclosure by those skilled in the art, the following detailed description is set forth:
the core of the application is to provide a molten steel tank slide oil cylinder anti-loosening device, which ensures that the slide oil cylinder 2 is firmly clamped in the installation base 13 through the locking oil cylinder 5 and the spring system 12, and can also realize automatic installation and disassembly.
Fig. 1 and 2 are a schematic view of the entire installation of the device of the present application and a structural view of the device of the present application, respectively.
In a first aspect, the application provides a molten steel tank slide hydro-cylinder locking release, including mouth of a river slide 10, slide hydro-cylinder 2, locking hydro-cylinder 5 and installation base 13, installation base 13 is located 11 bottoms of molten steel tank, the embedding of slide hydro-cylinder 2 in the installation base 13, the inside front end cover of slide hydro-cylinder 2 is equipped with locking hydro-cylinder 5, be equipped with piston bush 8 in the locking hydro-cylinder 5, slide hydro-cylinder 2's piston rod 4 is followed pass in the piston bush 8, and enter mouth of a river slide 10.
The molten steel tank 11 is a transportation tool which is arranged below a converter furnace in a steelmaking production workshop and is used for receiving molten steel and transporting the molten steel to a specified position for casting steel billets, the water gap sliding plate 10 is arranged at the bottom of the molten steel tank 11 and is used as a key system for controlling the flow of molten steel in a steel ladle, and the water gap sliding plate 10 is controlled to be opened and closed through the sliding plate oil cylinder 2 so as to control the molten steel to flow from the molten steel tank 11 to the intermediate tank; the mounting base 13 is arranged at the bottom of the molten steel tank 11, is of a groove body structure and is used for mounting the sliding plate oil cylinder 2.
The slide plate oil cylinder 2 is arranged on one side of the water gap slide plate 10, the front end of the extending side of a piston rod 4 of the slide plate oil cylinder 2 is connected with a circular fixing head 9, and the diameter of the fixing head 9 is larger than the hole on the side surface of the water gap slide plate 10 and is used for connecting the water gap slide plate 10 with the slide plate oil cylinder 2; when the sliding plate oil cylinder 2 is used for oil inlet and outlet, the water gap sliding plate 10 is pushed to open and close.
Specifically, hydraulic oil enters a rod cavity 3 of the sliding plate oil cylinder through a hydraulic oil pipe, the sliding plate oil cylinder 2 retracts, a piston rod 4 drives a water gap sliding plate 10 to move towards one side of the sliding plate oil cylinder 2, and molten steel flows out of a molten steel tank 11; further, the opening and closing degree of the nozzle slide 10 is controlled, thereby controlling the molten steel flow rate of the molten steel tank 11.
A locking oil cylinder 5 is sleeved inside the sliding plate oil cylinder 2, a hole 1 is formed in one side, close to the sliding plate oil cylinder 2, of the locking oil cylinder 5, a hole 2 is formed in one side of the water gap sliding plate, and the hole 1 is used for accommodating a piston rod 4 to penetrate through the hole; a piston sleeve 8 is transversely arranged in the locking oil cylinder 5, one end of the piston sleeve 8 is connected with the side surface of the locking oil cylinder close to one side of the sliding plate oil cylinder, and the other end of the piston sleeve penetrates out along the hole 2; the piston sleeve 8 is internally of a hollow structure, and the diameter of the hollow structure is consistent with that of the hole 1; the piston rod 4 of the sliding plate oil cylinder 2 penetrates through the hole 1, continues to pass through the piston sleeve 8, and penetrates through the hole 2 together with the piston sleeve 8, the piston rod 4 enters the water gap sliding plate 10, and the piston sleeve 8 props against the side face of the water gap sliding plate 10.
And a piston sleeve 8 positioned in the locking oil cylinder 5 is provided with vertical baffle plates from the middle part to the top and the bottom of the locking oil cylinder 5, and the locking oil cylinder 5 is divided into a locking oil cylinder rodless cavity 6 and a locking oil cylinder rod cavity 7.
Before the sliding plate oil cylinder 2 is embedded into the mounting base 13, the bottom plate of the locking oil cylinder 5 is fixed with the bottom plate of the sliding plate oil cylinder 2, so that the locking oil cylinder 5 is connected with the sliding plate oil cylinder 2; the locking cylinder 5 is fixed on the front side of the slide plate cylinder 2, and specifically, the side of the piston rod 4 extending towards the nozzle slide plate 10 is the front side.
The locking oil cylinder 5 is arranged inside the sliding plate oil cylinder 2, the ambient temperature is high, spare parts can be aged and damaged, and safety accidents can be caused if the spare parts are not replaced for a long time. Therefore, the locking oil cylinder 5 is movably connected when being installed, and the locking oil cylinder 5 is fixed in the sliding plate oil cylinder 2 by connecting the bottom plate of the locking oil cylinder 5 with the bottom plate of the sliding plate oil cylinder 2.
Alternatively, the movable connection is made by bolts, which are fixed by passing through the fixed anchor screw holes at the front end of the slide cylinder 2 and the fixed anchor bolt holes at the rear side of the locking cylinder 5. And the locking oil cylinder 5 can be conveniently and timely replaced by adopting movable connection.
The locking oil cylinder 5 and the sliding plate oil cylinder 2 have independent hydraulic oil paths, and the locking oil cylinder and the sliding plate oil cylinder work independently. The sliding plate oil cylinder 2 is used for pushing the water gap sliding plate 10 to move through the fixing head 9 at the front end of the piston rod 4 during production operation so as to control molten steel of the molten steel tank 11 to flow out, and the sliding plate oil cylinder 2 does not work during installation; and locking hydro-cylinder 5 need the oil feed to locking hydro-cylinder rodless chamber 6 immediately after the installation, promote piston sleeve 8 and stretch out to the front side, withstand the side of mouth of a river slide 10, and then, mouth of a river slide 10 produces the reaction force to piston sleeve 8, and locking hydro-cylinder 5 receives reverse thrust to fix slide hydro-cylinder 2 in installation base 13, avoid appearing the production accidents such as pine and take off.
Therefore, the gap between the piston sleeve 8 and the piston rod 4 must be sealed with a strong gasket; the locking oil cylinder 5 and the oil inlet pipe joint adopt high-pressure movable joints and are wrapped by a high-temperature-resistant inlet sealing rubber mat and high-temperature-resistant protective cotton.
For example, if sealing is not performed, oil leakage, oil channeling and the like occur, so that the piston sleeve 8 inside the locking cylinder 5 is unloaded and cannot abut against the side surface of the nozzle slide plate 10, the slide plate cylinder 2 is loosened and falls out of the slide plate cylinder mounting base 13, the molten steel casting flow cannot be controlled, and safety accidents occur.
After the sealing, locking hydro-cylinder 5 also can be because quality is not up to standard in the production and processing process, has that the material is ageing, oil pipe surface damage, joint sealing washer ageing etc. all can lead to appearing oil leak, scurrying the oil phenomenon, leads to locking hydro-cylinder 5 can't lead to the fact the slippage with slide hydro-cylinder 2 card in installation base 13.
More optimally, a spring system 12 is additionally arranged in the rodless cavity 6 of the locking oil cylinder, so that production accidents caused by falling of the sliding plate oil cylinder 2 when the locking oil cylinder 5 has unloading and other problems can be avoided.
The method is realized by the following steps:
a spring system 12 is arranged in the rodless cavity 6 of the locking oil cylinder, one end of the spring system 12 is fixed on the side surface of the rodless cavity 6 of the locking oil cylinder, and the other end of the spring system 12 is wound and sleeved on the piston sleeve 8; the spring system 12 has a pre-stress in the range of 6.1-11.0 KN, typical but not limiting pre-stresses being e.g. 6.1KN, 6.5KN, 6.8KN, 7.0KN, 7.4KN, 7.8KN, 8.2KN, 8.6KN, 9.0KN, 9.4KN, 9.8KN, 10.2KN, 10.6KN, 11.0 KN.
After the locking oil cylinder 5 is unloaded due to oil leakage, oil channeling and the like, the piston sleeve 8 does not prop against the side surface of the water gap sliding plate 10 any more, and the water gap sliding plate 10 does not provide a counterforce any more; the spring system 12 is arranged in the rodless cavity 6 of the locking oil cylinder, always keeps certain pre-pressure, can provide thrust for the piston sleeve 8, pushes the piston sleeve 8 to continuously push the side surface of the water gap sliding plate 10 forwards, and further ensures the normal and stable operation of the sliding plate oil cylinder 2.
According to field measurement and practical experience, when the pre-pressure of the spring system 12 is too small, the thrust for pushing the piston sleeve 8 is too small, the piston sleeve 8 extends forwards but cannot push against the side surface of the water gap sliding plate 10, or the piston sleeve 8 extends forwards and can push against the water gap sliding plate 10, but the force is small, so that the reverse thrust for clamping the sliding plate oil cylinder 2 in the mounting base 13 is small, the sliding plate oil cylinder 2 is not firmly clamped, and the sliding plate oil cylinder is easy to fall off; when the pre-pressure is too large, the reverse acting force provided by the water gap sliding plate 10 is too large, the sliding plate oil cylinder 2 is fixed too fast, and the sliding plate oil cylinder is difficult to take out when a mechanical arm and the like are adopted for automatic disassembly.
Optionally, the spring system 12 may be a disc spring, which has the advantages of short stroke, small required space, simple and convenient manufacturing, durable material, etc., and the middle part is hollow and is sleeved on the piston sleeve 8, which is beneficial to saving space; the diameter of the disc spring is based on the diameter of the rodless cavity 6 of the locking oil cylinder, and the disc spring is fixed in the middle of the side face of the rodless cavity 6 of the locking oil cylinder, does not deflect up and down, and provides uniform thrust for the piston sleeve 8.
Furthermore, a pressure monitoring relay is respectively arranged on the sliding plate cylinder valve stand and the locking cylinder valve stand. The pressure monitoring relay is an element which enables an electric contact to act when the fluid pressure reaches a preset value in a hydraulic system, and a PLC (programmable logic controller) alarm program is started immediately by adjusting the pressure monitoring relay when the detected pressure reaches the value below a threshold value set by the normal working pressure, so that the hydraulic fault is processed by manual intervention, and the normal work of the system is ensured.
In a second aspect, the present application further provides a control method for controlling looseness prevention of a sliding plate cylinder of a ladle, specifically including:
step 1: the bottom of the molten steel tank 11 is provided with a mounting base 13 and a nozzle sliding plate 10, the molten steel tank 11 is placed on a ladle of a continuous casting machine, the locking oil cylinder 5 is sleeved in the sliding plate oil cylinder 2 by adopting a manipulator and is embedded into the mounting base 13, and a piston rod 4 at the front end of the sliding plate oil cylinder 2 is fixed in the nozzle sliding plate 10;
step 2: the locking oil cylinder rodless cavity 6 is used for feeding oil, the piston sleeve 8 extends forwards to prop against the side face of the water gap sliding plate 10, and the locking oil cylinder 5 fixes the sliding plate oil cylinder 2 in the mounting base 13 by utilizing the reaction force of the water gap sliding plate 10;
and step 3: the molten steel tank 11 is ready for casting, the electromagnetic valve is opened to be electrified, hydraulic oil enters the rod cavity 2 of the sliding plate oil cylinder through the hydraulic oil pipe, the sliding plate oil cylinder 2 retracts, the piston rod 4 drives the water gap sliding plate 10 to move to one side of the sliding plate oil cylinder 2, and molten steel flows out of the molten steel tank 11 to be cast;
and 4, step 4: if the locking oil cylinder 5 is in a locking working state, oil leakage unloading is caused by high temperature and the like, a spring system 12 in a rodless cavity 6 of the locking oil cylinder can provide pre-pressure within the range of 6.1-11.0 KN so as to ensure that the piston sleeve 8 always props against the side surface of a molten steel ladle nozzle sliding plate 10 and ensure that the sliding plate oil cylinder 2 is stably fixed in the mounting base 13 in the casting process;
and 5: after casting is finished, the rodless cavity 6 of the sliding plate oil cylinder takes oil and pushes the piston rod 4 to move forwards, so that the water gap sliding plate 10 is driven to move forwards to block the steel outlet of the molten steel tank 11.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are clearly and completely described above with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the above detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the present application, all the embodiments, implementations, and features of the present application may be combined with each other without contradiction or conflict. In the present application, conventional equipment, devices, components, etc. are either commercially available or self-made in accordance with the present disclosure. In this application, some conventional operations and devices, apparatuses, components are omitted or only briefly described in order to highlight the importance of the present application.
The foregoing is merely exemplary of the present application and is not intended to limit the present application, which may be modified or varied by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a molten steel pot slide hydro-cylinder locking release which characterized in that, includes mouth of a river slide, slide hydro-cylinder, locking hydro-cylinder and installation base, the installation base is located the molten steel pot bottom, the embedding of slide hydro-cylinder in the installation base, the inside front end cover of slide hydro-cylinder is equipped with the locking hydro-cylinder, be equipped with the piston bush in the locking hydro-cylinder, the piston rod of slide hydro-cylinder is followed pass in the piston bush, and enter the mouth of a river slide.
2. The apparatus of claim 1, wherein the nozzle slide is provided at a bottom of the ladle for controlling outflow of molten steel from the ladle;
the slide hydro-cylinder is located one side of mouth of a river slide, piston rod stretching out side front end is connected with circular shape fixed head, fixed head diameter is greater than mouth of a river slide side hole, be used for with mouth of a river slide with the slide hydro-cylinder is connected the slide hydro-cylinder advances when going out oil, promotes mouth of a river slide opens and shuts, through control the degree of opening and shutting of mouth of a river slide, and then control the molten steel flow of molten steel jar.
3. The device of claim 1, wherein the locking cylinder is provided with a hole 1 on a side close to the slide cylinder for accommodating the piston rod to pass through;
a hole 2 is formed in one side, close to the water gap sliding plate, of the locking oil cylinder and is used for accommodating the piston rod and the piston sleeve to penetrate through;
the piston sleeve is transversely arranged in the locking oil cylinder, one end of the piston sleeve is connected with the side surface of the locking oil cylinder close to one side of the sliding plate oil cylinder, and the other end of the piston sleeve penetrates out of the hole 2;
the piston sleeve is of a hollow structure and is consistent with the hole 1 in size, and the piston rod penetrates through the hole 1, penetrates through the hole 2 together with the piston sleeve and enters the water gap sliding plate;
and a vertical baffle plate is arranged in the middle of the piston sleeve and divides the locking oil cylinder into a locking oil cylinder rodless cavity and a locking oil cylinder rod cavity.
4. The device of claim 3, wherein the gap between the piston sleeve and the piston rod is sealed by a strong sealing gasket, and the slide plate cylinder and the locking cylinder are connected with separate hydraulic oil paths.
5. The device of claim 4, wherein the rod-less cavity of the locking cylinder is connected with an oil inlet pipe, the oil inlet of the rod-less cavity of the locking cylinder pushes the piston sleeve to extend towards one side of the water gap sliding plate and push against the side surface of the water gap sliding plate, and the locking cylinder fixes the sliding plate cylinder in the mounting base by using the reaction force of the water gap sliding plate.
6. The device according to claim 3, characterized in that a spring system is additionally arranged in the rodless cavity of the locking oil cylinder, and the pre-pressure range is 6.1-11.0 KN.
7. The device of claim 6, wherein the spring system is sleeved on the piston sleeve, and the spring system can be a disc spring.
8. The device of claim 1, wherein the bottom plate of the locking cylinder is connected with the bottom plate of the slide plate cylinder through a bolt, so that the locking cylinder is sleeved in the slide plate cylinder.
9. The apparatus of claim 1, wherein the ram cylinder valve station and the lock cylinder valve station are provided with pressure monitoring relays.
10. A control method for preventing a sliding plate cylinder of a molten steel tank from loosening, which comprises the device of any one of claims 1 to 9,
step 1: the bottom of the molten steel tank is provided with an installation base and a water gap sliding plate, the molten steel tank is placed on a ladle of a continuous casting machine, a locking oil cylinder with a spring system arranged in an inner rodless cavity is sleeved in a sliding plate oil cylinder by a manipulator and is embedded into the installation base, and the front end of a piston rod of the sliding plate oil cylinder is fixed in the water gap sliding plate;
step 2: the locking oil cylinder is used for feeding oil into the rodless cavity, the piston sleeve extends forwards to prop against the side face of the water gap sliding plate, and the locking oil cylinder fixes the sliding plate oil cylinder in the mounting base by utilizing the reaction force of the water gap sliding plate;
and step 3: the molten steel tank is ready for casting, the electromagnetic valve is opened to be electrified, hydraulic oil enters the rod cavity of the sliding plate oil cylinder through the hydraulic oil pipe, the sliding plate oil cylinder retracts, the piston rod drives the water gap sliding plate to move to one side of the sliding plate oil cylinder, and molten steel flows out of the molten steel tank to be cast;
and 4, step 4: if the locking oil cylinder is in a locking working state, oil leakage unloading is caused by high temperature and the like, a spring system in a rodless cavity of the locking oil cylinder can provide pre-pressure within the range of 6.1-11.0 KN so as to ensure that the piston sleeve always props against the side surface of a water gap sliding plate of the molten steel tank and ensure that the sliding plate oil cylinder is stably fixed in the mounting base in the casting process;
and 5: after casting is finished, the rodless cavity of the sliding plate oil cylinder feeds oil to push the piston rod to move forwards, so that the water gap sliding plate is driven to move forwards to block the steel tapping hole of the molten steel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110931785.4A CN113618056B (en) | 2021-08-13 | 2021-08-13 | Anti-loosening device for slide plate cylinder of molten steel tank and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110931785.4A CN113618056B (en) | 2021-08-13 | 2021-08-13 | Anti-loosening device for slide plate cylinder of molten steel tank and control method |
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| Publication Number | Publication Date |
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| CN113618056A true CN113618056A (en) | 2021-11-09 |
| CN113618056B CN113618056B (en) | 2024-01-05 |
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| CN209303698U (en) * | 2018-12-10 | 2019-08-27 | 攀枝花钢城集团瑞钢工业有限公司 | Slide gate nozzle hydraulic cylinder |
| CN212734136U (en) * | 2020-08-02 | 2021-03-19 | 邯郸市兴达金属耐火材料有限公司 | Sliding gate control mechanism |
| CN212761097U (en) * | 2020-06-30 | 2021-03-23 | 宁波钢铁有限公司 | Anti-slip structure of hydraulic cylinder in slide way of steel ladle mechanism |
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|---|---|---|---|---|
| CN201220274Y (en) * | 2008-06-27 | 2009-04-15 | 武汉钢铁(集团)公司 | Ladle skate board apparatus |
| CN101713488A (en) * | 2009-10-14 | 2010-05-26 | 江苏国力锻压机床有限公司 | Safe locking device for slide block moving vertically |
| CN202763032U (en) * | 2012-06-20 | 2013-03-06 | 宣化钢铁集团有限责任公司 | Ladle nozzle hydraulic cylinder of continuous casting machine |
| WO2015028230A1 (en) * | 2013-08-27 | 2015-03-05 | Siemens Vai Metals Technologies Gmbh | Ladle slide cylinder adapted for automated mounting |
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| CN113618056B (en) | 2024-01-05 |
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