CN113618056B - Anti-loosening device for slide plate cylinder of molten steel tank and control method - Google Patents
Anti-loosening device for slide plate cylinder of molten steel tank and control method Download PDFInfo
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- CN113618056B CN113618056B CN202110931785.4A CN202110931785A CN113618056B CN 113618056 B CN113618056 B CN 113618056B CN 202110931785 A CN202110931785 A CN 202110931785A CN 113618056 B CN113618056 B CN 113618056B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 66
- 239000010959 steel Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000003921 oil Substances 0.000 claims description 159
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 57
- 238000005266 casting Methods 0.000 claims description 15
- 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
- 230000005611 electricity Effects 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 19
- 235000008331 Pinus X rigitaeda Nutrition 0.000 abstract description 2
- 235000011613 Pinus brutia Nutrition 0.000 abstract description 2
- 241000018646 Pinus brutia Species 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 10
- 230000007246 mechanism Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005465 channeling Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004891 communication 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
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011017 operating method Methods 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
- 239000007787 solid Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Classifications
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Actuator (AREA)
Abstract
The utility model provides a steel ladle slide hydro-cylinder anti-loosening device and control method, relates to slide hydro-cylinder technical field, including mouth of a river slide, slide hydro-cylinder, locking hydro-cylinder and installation base, the installation base is located steel ladle bottom one side, slide hydro-cylinder embedding in the installation base, slide hydro-cylinder inside front end cover is equipped with locking hydro-cylinder, be equipped with the piston sleeve in the locking hydro-cylinder, slide hydro-cylinder's piston rod is followed in the piston sleeve passes, and gets into the mouth of a river slide. The device is equipped with the locking hydro-cylinder at the inside front end cover of slide hydro-cylinder, is equipped with spring system in the locking hydro-cylinder rodless chamber, advances oil through the locking hydro-cylinder rodless chamber, promotes the piston sleeve of locking hydro-cylinder inside and 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 pine and take off or slippage phenomenon.
Description
Technical Field
The application relates to the technical field of slide plate oil cylinders, in particular to an anti-loosening stabilizing device of a slide plate oil cylinder of a molten steel tank of a continuous casting machine and a control method.
Background
The continuous casting machine is a device for continuously casting refined high-temperature molten steel into casting blanks with certain sections and certain dimensions. After the molten steel tank filled with high-temperature molten steel reaches the pouring position of the continuous casting machine, controlling the molten steel to flow from the molten steel tank to the intermediate tank through the sliding plate oil cylinder, and opening the sliding water gap by withdrawing a piston rod of the hydraulic oil cylinder so as to enable the high-temperature molten steel to flow out.
The traditional installation mode of the slide plate oil cylinder is that the slide plate oil cylinder is accurately registered with a slide plate oil cylinder installation seat, a slide plate oil cylinder piston rod and a slide plate T-shaped connecting rod together manually, the limit of the oil cylinder is realized by using a manual bolt, the temperature of molten steel in a molten steel tank is about 1500 ℃, the surface temperature of a slide plate mechanism is above 100 ℃, a worker needs to bear long-time high-temperature baking, and potential safety hazards of scalding exist. Furthermore, the sliding plate oil cylinder is installed in the base by manpower, and the sliding plate oil cylinder is separated from the base due to shaking, so that the sliding plate oil cylinder cannot normally control the opening of the sliding plate, if the sliding plate cannot be opened in this step, casting interruption, molten steel furnace return and other conditions are caused, the production technology is directly affected, and great economic loss is brought, and more serious, if the sliding plate cannot be closed after being opened, or the opening size of the sliding plate cannot be timely adjusted, irrecoverable serious safety accidents possibly occur. Therefore, the stability and the anti-loosening performance of the installation of the sliding plate cylinder are important points of researches of technicians, and are technical problems which are urgently needed to be solved at present.
In the patent 'the hydraulic cylinder anti-slip structure in the ladle mechanism slideway', the movable hook is arranged in the ladle mechanism slideway, and the movable hook is used for limiting the hydraulic cylinder mounting handle in the use process, so that the movable range of the hydraulic cylinder in the ladle mechanism slideway can be controlled, and the production safety is improved. Although the structure can effectively improve the safety, the operation process is more complicated and inflexible in actual use, the hook groove of the movable hook and the hydraulic cylinder mounting handle are required to be at the same height in mounting, and a certain gap is required to be kept between the movable hook and the fixing device in mounting, so that the movable hook groove can rotate, and the space is reserved when the movable hook groove is used for mounting the hydraulic cylinder.
The patent 'a slide plate oil cylinder assembly active assembly and disassembly system' discloses a slide plate oil cylinder assembly active assembly and disassembly system which comprises a mounting seat, an oil cylinder assembly, a clamp and a robot, wherein a clamping groove and a joint seat are arranged on the mounting 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 can lock the oil cylinder and also 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 releasing of the clamp. The application ensures the normal operation of the oil cylinder assembly through the connection of the joint and the joint seat and the matching of the clamping ring and the clamping groove, and realizes the movement and assembly of the oil cylinder through the robot and the clamp. The automatic assembly and disassembly system of the sliding plate oil cylinder assembly replaces manual assembly and disassembly of the oil cylinder assembly, and reduces the labor capacity of workers. According to the application, the clamping ring and the connector are arranged on the oil cylinder assembly, the clamping groove and the connector seat are correspondingly arranged on the mounting seat, during mounting, the clamp is locked with the oil cylinder by using the robot control clamp, then the clamp is moved to a preset position of the mounting seat, the clamping ring is clamped and fixed with the clamping ring, the connector is matched with the connector seat in an inserting manner, and after mounting is completed, the robot control clamp is separated; when the clamping ring is required to be detached, the robot controls the clamp to move to a preset position to be locked with the oil cylinder, and then the oil cylinder assembly is continuously moved to be taken down from the mounting seat, so that 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 be separated from the mounting seat. This application has realized the fixed of hydro-cylinder subassembly well, and has realized automatic operation, but operating procedure is comparatively complicated, need be provided with fittings such as joint, draw-in groove, snap ring, joint seat on hydro-cylinder, base in advance, still need set up anchor clamps and play the effect of middle lock solid in the installation, dismantlement in-process, and in actual effect, hydro-cylinder subassembly need with mount pad subassembly is supporting, adaptability is not high, and if fittings such as joint, draw-in groove, snap ring, joint seat appear the problem, can not in time avoid the anticreep of slide hydro-cylinder.
Therefore, according to the above problems, in order to prevent production and safety accidents caused by slipping of the slide cylinder, a new device for preventing the slide cylinder from loosening is needed to solve the hidden trouble.
Disclosure of Invention
In order to solve the problems of the prior art, the purpose of the application is to provide a device for preventing the sliding plate cylinder of the molten steel tank from loosening, which has the advantages of simple manufacture, stable operation, flexible operation, convenient maintenance and high safety, and can effectively prevent the sliding plate cylinder from sliding out of the inside of the base, thereby avoiding the occurrence of safety production accidents.
In order to achieve the above purpose, the following technical scheme is adopted:
the utility model provides an exemplary device that provides a steel ladle slide hydro-cylinder is anti-loosening, including mouth of a river slide, slide hydro-cylinder, locking hydro-cylinder and installation base, the installation base is located steel ladle bottom, slide hydro-cylinder embedding 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 sleeve in the locking hydro-cylinder, the piston rod of slide hydro-cylinder is followed pass in the piston sleeve, and get into the mouth of a river slide.
Further, the water gap sliding plate is arranged at the bottom of the molten steel tank and is used for controlling molten steel in the molten steel tank to flow out;
the slide cylinder is located one side of the water gap slide, the front end of the extending side of the piston rod is connected with a circular fixing head, the diameter of the fixing head is larger than that of a hole on the side face of the water gap slide, the water gap slide is connected with the slide cylinder, the slide cylinder is pushed to open and close when oil is fed in or discharged out, and the opening and closing degree of the water gap slide is controlled, so that the molten steel flow of the molten steel tank is controlled.
Further, a hole 1 is formed in one side, close to the sliding plate cylinder, of the locking cylinder, and is 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, which is close to one side of the slide plate oil cylinder, and the other end of the piston sleeve penetrates out along the hole 2; the piston sleeve is of a hollow structure, the size of the piston sleeve is consistent with that of the hole 1, the piston rod passes through the hole 1, passes through the hole 2 together with the piston sleeve, and enters the water gap sliding plate; the middle part of the piston sleeve is provided with a vertical baffle plate, and the locking oil cylinder is divided into a locking oil cylinder rodless cavity and a locking oil cylinder rod cavity.
Further, a gap between the piston sleeve and the piston rod is sealed by a strong sealing gasket, and the slide plate oil cylinder and the locking oil cylinder are connected with separate hydraulic oil ways.
Further, the rodless cavity of the locking oil cylinder is connected with an oil inlet pipe, oil is fed into the rodless cavity of the locking oil cylinder to push the piston sleeve to extend out to one side of the water gap sliding plate and support against the side surface of the water gap sliding plate, and the locking oil cylinder fixes the sliding plate oil cylinder in the installation base by utilizing the reaction force of the water gap sliding plate.
Further, a spring system is additionally arranged in the rodless cavity of the locking oil cylinder, and the precompression 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.
Further, the bottom plate of the locking oil cylinder is connected with the bottom plate of the sliding plate oil cylinder through bolts, so that the locking oil cylinder sleeve is arranged in the sliding plate oil cylinder.
Further, the sliding plate cylinder valve table and the locking cylinder valve table are provided with pressure monitoring relays.
The application also provides a control method for preventing the sliding plate 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 water gap slide plate, the molten steel tank is placed on a ladle of a continuous casting machine, a mechanical arm is adopted to arrange the locking cylinder sleeve in a slide plate cylinder, the locking cylinder sleeve is embedded into the mounting base, and the front end of a piston rod of the slide plate cylinder is fixed in the water gap slide plate;
step 2: the locking oil cylinder is provided with a rodless cavity for oil, the piston sleeve extends forwards to prop against the side surface 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;
step 3: the molten steel tank is ready for casting, the electromagnetic valve is started to obtain electricity, hydraulic oil enters a rod cavity of the slide plate oil cylinder through the hydraulic oil pipe, the slide plate oil cylinder is retracted, the water gap slide plate is driven to move to one side of the slide plate oil cylinder through the piston rod, and molten steel flows out of the molten steel tank to be cast;
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 precompression 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 slide plate at a water gap of a molten steel tank, and ensure that the slide plate oil cylinder is stably fixed in a mounting base in the casting process;
step 5: after casting is completed, the rodless cavity of the sliding plate oil cylinder is filled with oil, and the piston rod is pushed forward, so that the water gap sliding plate is driven forward, and the steel outlet of the molten steel tank is blocked.
Compared with the prior art, the method has the following beneficial effects:
the device is equipped with the locking hydro-cylinder through the cover at the inside front end of slide hydro-cylinder, and the piston sleeve of locking hydro-cylinder inside is pushed forward through solitary oil feed passageway to locking hydro-cylinder rodless chamber, 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 pine and take off or slippage phenomenon.
Furthermore, in order to prevent unloading caused by oil leakage when the locking oil cylinder is in a sealing effect or due to the quality, the material, the service life and the like of the locking oil cylinder, the device ensures that the piston sleeve is pushed to continuously push against the side surface of the water gap slide plate by the pre-pressure of the spring system even under the condition that the locking oil cylinder is in unloading by arranging the spring system with a certain pre-pressure in the rodless cavity of the locking oil cylinder, and further firmly fixes the slide plate oil cylinder in the installation base.
Further, the device can assist in realizing automation of assembling and disassembling the slide plate cylinder, avoids safety accidents such as high-temperature scalding and the like caused in the process of limiting the cylinder by a manual bolt, and ensures the life safety of operators.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall installation of the device of the present application;
FIG. 2 is a construction view of the device of the present application;
reference numerals: 1-a rodless cavity of a slide plate cylinder; 2-a slide plate cylinder; 3-a rod cavity is arranged on the slide plate cylinder; 4-a piston rod; 5-locking an oil cylinder; 6-locking a rodless cavity of the oil cylinder; 7-locking the oil cylinder with a rod cavity; 8-piston sleeve; 9-fixing the head; 10-a nozzle slide plate; 11-molten steel tank, 12-spring system; 13-mounting base.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the examples of the present application more apparent, embodiments of the present application will be described in detail with reference to the examples, but those skilled in the art will understand 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 specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
For a better understanding of the present application, to facilitate its implementation, those skilled in the art will set forth in detail below:
the core of the application is to provide a steel ladle slide oil cylinder anti-loosening device, which ensures that the slide oil cylinder 2 is firmly clamped in the mounting base 13 through the locking oil cylinder 5 and the spring system 12, and can also realize automatic mounting and dismounting.
Fig. 1 and 2 are an overall installation schematic view of the device of the present application and a construction view of the device of the present application, respectively.
In a first aspect, the present application provides a locking device of a ladle slide cylinder, which comprises a nozzle slide 10, a slide cylinder 2, a locking cylinder 5 and a mounting base 13, wherein the mounting base 13 is positioned at the bottom of the ladle 11, the slide cylinder 2 is embedded in the mounting base 13, the locking cylinder 5 is sleeved at the front end of the interior of the slide cylinder 2, the locking cylinder 5 is internally provided with a piston sleeve 8, and a piston rod 4 of the slide cylinder 2 passes through the piston sleeve 8 and enters the nozzle slide 10.
The ladle 11 is a transport means which is arranged under a converter in a steelmaking workshop and is used for receiving molten steel and transporting the molten steel to a specified position for casting billets, the nozzle slide plate 10 is arranged at the bottom of the ladle 11 and is used as a key system for controlling the flow rate of molten steel in a ladle, and the opening and the closing of the nozzle slide plate 10 are controlled through the slide plate oil cylinder 2 so as to control the molten steel to flow from the ladle 11 to a tundish; the installation base 13 is arranged at the bottom of the molten steel tank 11 and is in a groove body structure and is used for installing the slide plate oil cylinder 2.
The slide plate cylinder 2 is arranged on one side of the water gap slide plate 10, the front end of the extending side of the piston rod 4 of the slide plate cylinder 2 is connected with a round 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 cylinder 2; when the oil is fed into and discharged from the slide plate oil cylinder 2, the water gap slide plate 10 is pushed to open and close.
Specifically, hydraulic oil enters a rod cavity 3 of the slide plate cylinder through a hydraulic oil pipe, the slide plate cylinder 2 is retracted, a piston rod 4 drives a water gap slide plate 10 to move to one side of the slide plate cylinder 2, and molten steel flows out of a molten steel tank 11; further, the molten steel flow rate of the molten steel tank 11 is controlled by controlling the opening and closing degree of the nozzle slide plate 10.
A locking oil cylinder 5 is sleeved in the slide plate oil cylinder 2, a hole 1 is formed in one side, close to the slide plate oil cylinder 2, of the locking oil cylinder 5, a hole 2 is formed in one side of the water gap slide plate, and the hole 1 is used for accommodating a piston rod 4 to penetrate through the inside of 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, which is close to one side of the slide plate oil cylinder, and the other end of the piston sleeve penetrates out along the hole 2; the piston sleeve 8 is internally provided with a hollow structure, and the size of the hollow structure is consistent with the size of the hole 1; the piston rod 4 of the slide cylinder 2 passes through the hole 1, continues to pass through the piston sleeve 8 and passes through the hole 2 together with the piston sleeve 8, the piston rod 4 enters the nozzle slide 10, and the piston sleeve 8 abuts against the side surface of the nozzle slide 10.
The piston sleeve 8 positioned in the locking cylinder 5 is provided with vertical baffles from the middle to the top and the bottom of the locking cylinder 5, and divides the locking cylinder 5 into a locking cylinder rodless cavity 6 and a locking cylinder rod cavity 7.
Before the slide 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 slide plate oil cylinder 2, so that the locking oil cylinder 5 is connected with the slide plate oil cylinder 2; the locking cylinder 5 is fixed on the front side of the slide cylinder 2, and specifically, the side of the piston rod 4 extending towards the direction of the nozzle slide 10 is the front side.
The locking cylinder 5 is arranged in the slide plate cylinder 2, the ambient temperature is high, spare parts are aged to cause damage, and safety accidents can be caused by long-time replacement. Therefore, when the locking cylinder 5 is installed, the locking cylinder 5 is movably connected, and the bottom plate of the locking cylinder 5 is connected with the bottom plate of the slide plate cylinder 2, so that the locking cylinder 5 is fixed in the slide plate cylinder 2.
Alternatively, the movable connection is a bolt connection, and is fixed by passing a bolt through a fixed anchor screw hole at the front end of the slide cylinder 2 and a fixed anchor bolt hole at the rear side of the locking cylinder 5. The movable connection is adopted, so that the novel locking cylinder 5 can be conveniently and timely replaced.
The locking cylinder 5 and the slide plate cylinder 2 are provided with separate hydraulic oil ways, and the two are different in work and work relatively independently. The slide plate cylinder 2 is used for pushing a water gap slide plate 10 to move through a fixed head 9 at the front end of a piston rod 4 during production operation, so as to control molten steel of a molten steel tank 11 to flow out, and the slide plate cylinder 2 does not work during installation; the locking cylinder 5 needs to be immediately filled into the rodless cavity 6 of the locking cylinder after being installed, the piston sleeve 8 is pushed to extend to the front side to prop against the side surface of the water gap slide plate 10, and then the water gap slide plate 10 generates reaction force to the piston sleeve 8, the locking cylinder 5 is subjected to reverse thrust, and therefore the slide plate cylinder 2 is fixed in the installation base 13, and production accidents such as loosening and the like are avoided.
Therefore, the gap between the piston sleeve 8 and the piston rod 4 must be sealed with a strong gasket; the locking cylinder 5 and the oil inlet pipe joint adopt a high-pressure movable joint, and are wrapped by a high-temperature-resistant inlet sealing rubber pad and high-temperature-resistant protective cotton.
For example, if sealing is not performed, oil leakage, oil channeling and the like occur, the piston sleeve 8 in the locking cylinder 5 is unloaded and cannot bear against the side surface of the nozzle slide plate 10, so that the slide plate cylinder 2 is loosened and falls out of the slide plate cylinder mounting base 13, the casting flow of molten steel cannot be controlled, and safety accidents occur.
After sealing, the quality of the locking oil cylinder 5 is not up to standard in the production and processing process, and oil leakage and oil channeling phenomena are caused by ageing of materials, surface damage of an oil pipe, ageing of a joint sealing ring and the like, so that the locking oil cylinder 5 cannot clamp the sliding plate oil cylinder 2 in the mounting base 13, and slipping is caused.
More optimally, the spring system 12 is additionally arranged in the rodless cavity 6 of the locking oil cylinder, so that production accidents caused by falling off of the slide plate oil cylinder 2 when unloading and other problems occur to the locking oil cylinder 5 can be avoided.
The method is realized specifically as follows:
a spring system 12 is arranged in the locking cylinder rodless cavity 6, one end of the spring system 12 is fixed on the side surface of the locking cylinder rodless cavity 6, and the other end is wound and sleeved on the piston sleeve 8; the spring system 12 has a certain pre-pressure in the range of 6.1 to 11.0KN, typical but not limiting pre-pressures thereof being, for example, 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, 11.0KN.
After the locking oil cylinder 5 is unloaded due to oil leakage, oil channeling and the like, the piston sleeve 8 does not support the side surface of the water gap slide plate 10 any more, and the water gap slide plate 10 does not provide a reaction force any more; the spring system 12 is arranged in the rodless cavity 6 of the locking oil cylinder, always maintains a certain pre-pressure, can provide a thrust for the piston sleeve 8, and pushes the piston sleeve 8 to continuously push the side surface of the water gap slide plate 10 forwards, so that the normal and stable operation of the slide plate oil cylinder 2 is ensured.
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 does not prop against the side surface of the water gap slide plate 10, or the piston sleeve 8 extends forwards, so that the water gap slide plate 10 can be propped against, but the force is small, and therefore the reverse thrust for clamping the slide plate cylinder 2 in the mounting base 13 is small, so that the slide plate cylinder 2 is not firmly clamped, and the problems of falling and the like are easily caused; when the pre-pressure is too large, the reverse acting force provided by the water gap slide plate 10 is too large, the slide plate cylinder 2 is fixed too dead, and the slide plate cylinder is difficult to take out when being automatically disassembled by a mechanical arm and the like.
Optionally, the spring system 12 can be a belleville spring, which has the advantages of short stroke, small required space, simple and convenient manufacture, durable material and the like, and the middle is hollow, and the belleville spring is sleeved on the piston sleeve 8, so that the space is saved; the diameter of the belleville spring is based on the diameter of the rodless cavity 6 of the locking oil cylinder, the belleville spring is fixed in the middle of the side surface of the rodless cavity 6 of the locking oil cylinder, and the belleville spring does not deflect up and down, so that uniform thrust is provided for the piston sleeve 8.
Further, a pressure monitoring relay is arranged on each of the sliding plate cylinder valve table and the locking cylinder valve table. The pressure monitoring relay is a component for enabling the electric contact to act when the fluid pressure in the hydraulic system reaches a preset value, and when the detected pressure reaches the value below a threshold set by normal working pressure through adjusting the pressure monitoring relay, a PLC alarm program is immediately started, so that manual intervention is promoted to treat hydraulic faults, and the normal working of the system is ensured.
In a second aspect, the present application further provides a control method for controlling the anti-loosening of the slide cylinder of the molten steel tank, which specifically includes:
step 1: the bottom of the molten steel tank 11 is provided with a mounting base 13 and a water gap slide plate 10, the molten steel tank 11 is placed on a ladle of a continuous casting machine, a mechanical arm is adopted to sleeve the locking oil cylinder 5 in the slide plate oil cylinder 2, the locking oil cylinder is embedded into the mounting base 13, and a piston rod 4 at the front end of the slide plate oil cylinder 2 is fixed in the water gap slide plate 10;
step 2: the locking oil cylinder rodless cavity 6 is filled with oil, the piston sleeve 8 extends forwards to prop against the side surface of the water gap slide plate 10, and the locking oil cylinder 5 fixes the slide plate oil cylinder 2 in the mounting base 13 by utilizing the reaction force of the water gap slide plate 10;
step 3: the molten steel tank 11 is ready for casting, an electromagnetic valve is started to obtain electricity, hydraulic oil enters a rod cavity 2 of the slide plate oil cylinder through a hydraulic oil pipe, the slide plate oil cylinder 2 is retracted, a water gap slide plate 10 is driven to move to one side of the slide plate oil cylinder 2 through a piston rod 4, and molten steel flows out of the molten steel tank 11 for casting;
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 precompression within the range of 6.1-11.0 KN so as to ensure that the piston sleeve 8 always abuts against the side surface of a ladle nozzle slide plate 10, and ensure that the slide plate oil cylinder 2 is stably fixed in a mounting base 13 in the casting process;
step 5: after casting is completed, the rodless cavity 6 of the slide plate oil cylinder is filled with oil, and the piston rod 4 is pushed to move forward, so that the nozzle slide plate 10 is driven to move forward, and the tapping hole of the molten steel tank 11 is blocked.
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the foregoing description of the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. It will be apparent that the embodiments described are some, but not all, of the embodiments of the present application. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Accordingly, the above detailed description of the embodiments of the present application, provided in the accompanying drawings, is not intended to limit the scope of the application as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships that are conventionally put in use of the product of the application, are merely for convenience of description of the present application and simplification of description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
In this application, all of the examples, embodiments, and features of the present application may be combined with one another without contradiction or conflict. In this application, conventional equipment, devices, components, etc., are either commercially available or homemade 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 focus of the present application.
The foregoing is merely a specific embodiment of the present application and is not intended to limit the application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (7)
1. The locking and unlocking device for the steel ladle slide oil cylinder is characterized by comprising a water gap slide plate, a slide plate oil cylinder, a locking oil cylinder and a mounting base, wherein the mounting base is positioned at the bottom of the steel ladle, the slide plate oil cylinder is embedded into the mounting base, the locking oil cylinder is sleeved at the front end inside the slide plate oil cylinder, a piston sleeve is arranged in the locking oil cylinder, and a piston rod of the slide plate oil cylinder penetrates through the piston sleeve and enters the water gap slide plate;
a hole 1 is formed in one side, close to the sliding plate cylinder, of the locking cylinder and is 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, which is close to one side of the slide plate oil cylinder, and the other end of the piston sleeve penetrates out along the hole 2;
the piston sleeve is of a hollow structure, the size of the piston sleeve is consistent with that of the hole 1, the piston rod passes through the hole 1, passes through the hole 2 together with the piston sleeve, and enters the water gap sliding plate; a vertical baffle plate is arranged in the middle of the piston sleeve, and the locking oil cylinder is divided into a locking oil cylinder rodless cavity and a locking oil cylinder rod cavity;
a spring system is additionally arranged in the rodless cavity of the locking oil cylinder, and the precompression range is 6.1-11.0 KN;
the spring system is sleeved on the piston sleeve and is a disc spring.
2. The apparatus of claim 1, wherein the nozzle slide is provided at a bottom of the ladle for controlling outflow of molten steel in the ladle;
the slide cylinder is located one side of the water gap slide, the front end of the extending side of the piston rod is connected with a circular fixing head, the diameter of the fixing head is larger than that of a hole on the side face of the water gap slide, the water gap slide is connected with the slide cylinder, the slide cylinder is pushed to open and close when oil is fed in or discharged out, and the opening and closing degree of the water gap slide is controlled, so that the molten steel flow of the molten steel tank is controlled.
3. The device according to claim 1, wherein a 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.
4. The device according to claim 3, wherein the rodless cavity of the locking cylinder is connected with an oil inlet pipe, the oil inlet of the rodless cavity of the locking cylinder pushes the piston sleeve to extend towards one side of the water gap sliding plate and prop against the side surface of the water gap sliding plate, and the locking cylinder fixes the sliding plate cylinder in the mounting base by utilizing the reaction force of the water gap sliding plate.
5. The device according to claim 1, wherein the locking cylinder sleeve is arranged in the slide cylinder by connecting the bottom plate of the locking cylinder with the bottom plate of the slide cylinder through bolts.
6. The device of claim 1, wherein the slide cylinder valve station and the locking cylinder valve station are provided with pressure monitoring relays.
7. A control method for preventing the sliding plate cylinder of the molten steel tank from loosening comprises the device according to any one of claims 1-6, and is characterized in that,
step 1: the bottom of the molten steel tank is provided with a mounting base and a water gap slide plate, the molten steel tank is placed on a ladle of a continuous casting machine, a locking cylinder sleeve with a spring system in a rodless cavity is arranged in a slide plate cylinder by a mechanical arm, the locking cylinder sleeve is embedded into the mounting base, and the front end of a piston rod of the slide plate cylinder is fixed in the water gap slide plate;
step 2: the locking oil cylinder is provided with a rodless cavity for oil, the piston sleeve extends forwards to prop against the side surface 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;
step 3: the molten steel tank is ready for casting, the electromagnetic valve is started to obtain electricity, hydraulic oil enters a rod cavity of the slide plate oil cylinder through the hydraulic oil pipe, the slide plate oil cylinder is retracted, the water gap slide plate is driven to move to one side of the slide plate oil cylinder through the piston rod, and molten steel flows out of the molten steel tank to be cast;
step 4: if the locking oil cylinder is in a locking working state, oil leakage unloading is caused by high temperature, a spring system in a rodless cavity of the locking oil cylinder can provide precompression within the range of 6.1-11.0 KN, so that the piston sleeve is ensured to be always propped against the side surface of a slide plate at a water gap of a molten steel tank, and the slide plate oil cylinder is ensured to be stably fixed in a mounting base in the casting process;
step 5: after casting is completed, the rodless cavity of the sliding plate oil cylinder is filled with oil, and the piston rod is pushed to move forward, so that the water gap sliding plate is driven to move forward, and the steel tapping hole of the molten steel ladle is blocked.
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 CN113618056A (en) | 2021-11-09 |
| CN113618056B true CN113618056B (en) | 2024-01-05 |
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| 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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| CN113618056A (en) | 2021-11-09 |
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