A super large ladle slide nozzle mechanism and method

Abstract

The application discloses a super-large ladle sliding nozzle mechanism and method, which comprises a mounting plate, a sliding frame, a door frame, a cylinder support, refractory material, a hydraulic cylinder and a door closing cylinder. The refractory material comprises an upper sliding plate, an upper nozzle, a lower sliding plate and a lower nozzle. By adding 16 springs, 14 transition blocks and 2 transition rollers on the door frame component, super high surface pressure is generated between the upper sliding plate in the mounting plate component cavity and the lower sliding plate surface in the sliding frame component cavity, thereby solving the problem of molten steel leakage caused by insufficient surface pressure of the ladle sliding nozzle mechanism of the super-large ladle. By adding a clamping groove at both ends of the sliding frame component and freely switching the two connection modes of the cylinder support component on the mounting plate component and the door frame component, the mechanism is integrated in a normal and inverted manner, thereby solving the installation problem caused by the limitation of the site environment position or the installation mode of the steel plant, and making the structure of the ladle sliding nozzle mechanism more flexible and changeable.

Description

Technical Field

[0001] The invention relates to molten steel flow control equipment between a ladle and a tundish in a continuous casting area of ​​a steelmaking plant, in particular to a sliding nozzle mechanism and method for an extra-large ladle. Background Art

[0002] During steelmaking, existing steel mills use a ladle to transfer molten steel into a tundish. A sliding mechanism at the bottom of the ladle controls the flow of molten steel. Because the ambient temperature below the ladle is very high, typically reaching 300-500°C, the mechanism is primarily constructed from heat-resistant steel. With molten steel temperatures reaching around 1600-1800°C, all components in the mechanism that come into direct contact with the molten steel (the upper nozzle, upper slide, lower slide, and lower nozzle) are made from high-temperature refractory materials.

[0003] At present, the capacity of super large ladles in steel plants has reached 350t, and the overall surface pressure and refractory aperture of the original ladle sliding nozzle cannot meet the requirements.

[0004] When the molten steel in the ladle is drained, the refractory material in the mechanism needs to be replaced. In order to reduce energy consumption, avoid baking the ladle again, save time, and improve the turnover of the ladle, as long as the ladle as a whole can continue to be used, it is quickly replaced when the ladle is not cooled.

[0005] Therefore, how to reduce the labor intensity of on-site operators, shorten replacement time and ensure safety becomes a very important issue. Summary of the Invention

[0006] In order to solve the above technical problems, the inventors have come up with the technical solution of the present invention through practice and summary. The present invention adopts the following technical solution:

[0007] A super-large ladle sliding nozzle mechanism, comprising a mounting plate, a sliding frame, a door frame, a cylinder support, a refractory material, a hydraulic cylinder, and a door-closing cylinder, wherein the refractory material comprises an upper slide plate, an upper nozzle, a lower slide plate, and a lower nozzle;

[0008] Among them, the sliding frame is installed in the door frame, the cylinder support is fixed on the door frame, the door frame is connected to the mounting plate through a pin shaft and a surface pressure hook, the hydraulic cylinder is hung on the cylinder support, the hydraulic cylinder head is connected to the sliding frame slot, and the refractory material is installed in the mechanism cavity;

[0009] The mounting plate is provided with two groups of connecting blocks connected to the ladle reference plate, with two being provided on each group on the left and right, each connecting block being provided with a notch and a hinge hole located on the side of the notch for inserting a pin shaft therein, the two pin shafts located on one side being used for rotating and connecting the door frame, and the two pin shafts on the other side being connected to two surface pressure hooks for closing the door and fixing it and maintaining pressure, the mounting plate being provided with two opening slots for hanging and closing the door cylinder, the mounting plate being provided with a mounting cavity, a clamping assembly being installed in the mounting cavity, the clamping assembly being used for installing the upper slide plate, and a notch being provided in the mounting cavity for installing a positioning ring;

[0010] One side of the door frame is connected to the door frame support for connecting the mounting plate, and the other side is connected to two sets of hook pins and a door closing pressure block located between the two sets of hook pins for applying pressure to the door closing cylinder when closing the door. The door frame on the same side of the hook pin is provided with an anti-drop pin assembly to prevent the surface pressure hook from disengaging. The side of the door frame opposite to the sliding frame is provided with a surface pressure spring assembly for ultra-high pressure surface pressure on the upper and lower slide plates;

[0011] The sliding frame is provided with a slide cavity, and a notch is provided in the slide cavity for installing a detachable tightening sleeve. The tightening sleeve is partially exposed on the outside of the sliding frame and is connected to a heat insulation board. The tightening sleeve is equipped with a tightener for tightening the drain outlet. A clamping assembly 2 is installed in the slide cavity, and the clamping assembly 2 is used to install the lower slide. A card slot is provided at one end of the sliding frame and a push-pull rod assembly is provided at the other end. Two slide bars are provided on both sides of the sliding frame for bearing the pressure of the surface pressure spring assembly and enabling relative sliding.

[0012] The oil cylinder support comprises an oil cylinder support body formed by welding, a protective plate and a latch for connection and fixing.

[0013] Preferably, the slide cavity is provided with a clamping groove on both sides for positioning and clamping the water inlet installation tool when installing the water inlet;

[0014] A support block for supporting the upper nozzle installation tool is provided on the side of the installation plate;

[0015] A hexagon socket screw is installed on the mounting plate to hold down one end of the fixed pin to prevent rotation;

[0016] Two pressing blocks are provided on both sides of the door frame, which are used to prevent the sliding frame from falling due to its own weight when the door is open due to the pre-compression action of the surface pressure spring assembly.

[0017] Preferably, the mounting plate is internally slotted and perforated to connect two welded ventilation holes on the surface, and the two ventilation holes are used to cool the entire interior of the mechanism;

[0018] The face pressure spring assembly comprises a counterbore one and a counterbore two arranged on a door frame, the counterbore one is internally provided with a spiral spring one, a transition pressure receiving wheel and a locking nut one, the counterbore two is internally provided with a transition pressure receiving block, a spiral spring two and a locking nut two, the transition pressure receiving block and the transition pressure receiving wheel are partially exposed outside the door frame and used for face pressure sliding frame; the face pressure spring assembly further comprises a cooling channel arranged on the door frame and used for cooling the spring.

[0019] The transition pressure receiving block is provided with a gas passage.

[0020] Preferably, the installation cavity, the positioning ring, the sliding plate cavity and the jacking sleeve are all provided with five long notches, which are used for buffering molten steel when the molten steel accidentally penetrates between the water gap and the sliding plate, so as to avoid burning the mechanism.

[0021] Preferably, the heat insulation plate is provided with three positioning pointers, which are used for observing the moving position of the sliding frame.

[0022] Preferably, the clamping assembly one comprises a heat-resistant magnetic steel one and a horseshoe-shaped iron one arranged in the installation cavity, the heat-resistant magnetic steel one is used for adsorbing and fixing the upper sliding plate, the horseshoe-shaped iron one is used for internally moving and clamping the upper sliding plate, the installation plate is provided with a pushing piece one located on one side of the installation cavity, and the pushing piece one is used for extruding the horseshoe-shaped iron one to the inside of the installation cavity.

[0023] The clamping assembly two comprises a heat-resistant magnetic steel two and a horseshoe-shaped iron two arranged in the sliding plate cavity, the heat-resistant magnetic steel two is used for adsorbing and fixing the lower sliding plate, the horseshoe-shaped iron two is used for internally moving and clamping the lower sliding plate, and the sliding frame is provided with a pushing piece two located on one side of the sliding plate cavity, and the pushing piece two is used for extruding the horseshoe-shaped iron two to the inside of the sliding plate cavity.

[0024] Preferably, the pushing piece one and the pushing piece two both comprise a sinking groove, a fixed plate is arranged at the notch of the sinking groove, a cam is arranged on the fixed plate, and the cam is located in the sinking groove and used for pushing the horseshoe-shaped iron one or the horseshoe-shaped iron two to press and fix the upper sliding plate or the lower sliding plate.

[0025] The horseshoe-shaped iron one or the horseshoe-shaped iron two is provided with a side groove at the middle of two sides.

[0026] A guide rod is arranged on the inner side of the installation cavity and the sliding cavity, and the guide rod is provided with an outwardly protruding guide body, the guide body and the side groove are located in position and are slidably connected.

[0027] Preferably, the clamping assembly one and the clamping assembly two both comprise a side pressing block and a clamping piece, the side pressing block is provided with a sliding pin one and a sliding pin two, the sliding pin one and the side pressing block are connected through a torsion spring, and the installation plate and the sliding plate are provided with a half groove one and a half groove two along the thickness direction, the half groove one is used for sliding of the sliding pin one, and the half groove two is used for sliding of the sliding pin two.

[0028] The side pressing block is provided with a pressure receiving block and a limiting block, the pressure receiving block is located on the corresponding sliding plate, and the limiting block is used for limiting the position of the sliding plate.

[0029] The clamping piece is located on the mounting plate and the sliding plate outside the side pressure block. The clamping piece is an elastic telescopic structure. One end of the clamping piece close to the mounting plate and the sliding plate is a slope structure gradually approaching the sliding pin.

[0030] A method for using an extra-large ladle sliding nozzle mechanism, comprising:

[0031] Step 1: Mechanism assembly

[0032] Install the water outlet and the tightening sleeve in the slide cavity of the sliding frame, and fix the water outlet with the tightening device. Place the lower slide in the slide cavity, and fix the lower slide in the slide cavity by rotating the cam of the pushing member after being adsorbed by the heat-resistant magnetic steel.

[0033] Install the water inlet and the positioning ring in the installation cavity, place the upper slide in the installation cavity, and fix the upper slide in the installation cavity by rotating the cam of the push piece 2 after being adsorbed by the heat-resistant magnetic steel 2;

[0034] Connect the mounting plate and door frame through the pin shaft and door frame support on one side to form an open and close door structure, and install the surface pressure hook on the other side of the mounting plate;

[0035] Install the sliding frame in the sliding area between the door frame's pressing block and the door frame's bottom surface. At this time, the surface pressure spring assembly acts on the slide bars on both sides of the sliding frame.

[0036] Hook the closing pressure block through the T-shaped block at the end of the closing cylinder piston rod and pull it to the side close to the mounting plate, hook the surface pressure hook on the hook pin on the side of the door frame, and restrict the surface pressure hook with the anti-drop pin assembly to complete the assembly;

[0037] Step 2: Mechanism installation

[0038] Fix the mounting plate on the ladle reference plate;

[0039] Step 3, skateboard replacement

[0040] After the number of consecutive slidings on the friction surface of the upper and lower slides reaches the limit, remove the anti-drop pin assembly, then hook the closing pressure block through the T-shaped block at the end of the piston rod of the closing cylinder and pull it toward the side close to the mounting plate to separate the surface pressure hook and the hook pin, thus opening the inner cavity of the mechanism;

[0041] The manipulator rotates the cam of the push piece in the opposite direction to loosen the upper and lower slide plates, and removes them through the manipulator;

[0042] The manipulator is constructed by installing the upper slide plate in the slide plate cavity and the lower slide plate in the installation cavity, and the original non-friction surfaces of the upper slide plate and the lower slide plate serve as friction surfaces;

[0043] Rotate the door frame toward the side of the mounting plate, hook the door closing pressure block through the T-shaped block at the end of the piston rod of the door closing cylinder again and pull it toward the side close to the mounting plate, re-hook the surface pressure hook and the hook pin, and limit the surface pressure hook with the anti-drop pin assembly.

[0044] A method for using an extra-large ladle sliding nozzle mechanism, comprising:

[0045] Step 1: Mechanism assembly

[0046] Install the water outlet and the tightening sleeve in the slide cavity of the sliding frame, and fix the water outlet through the tightening device, align the lower slide with the slide cavity and install the lower slide in the slide cavity along the axial direction. During the axial installation process, the non-friction surface of the lower slide acts on the pressure block to deflect the side pressure block inward, and the limit block limits the position of the lower slide. When the second sliding pin enters the second half groove, the lower slide is aligned with the slide cavity. When the second sliding pin is fully entered, the locking piece limits the side pressure block from the outside of the side pressure block in the thickness direction of the slide frame. At this time, the lower slide is fixed in the slide cavity;

[0047] Install the upper water inlet and the positioning ring in the installation cavity, align the upper slide plate with the installation cavity and install the lower slide plate in the installation cavity along the axial direction. During the axial installation process, the non-friction surface of the upper slide plate acts on the pressure block to deflect the side pressure block inward, and the limit block limits the position of the upper slide plate. When the second sliding pin enters the second half groove, the upper slide plate is aligned with the installation cavity. When the second sliding pin is fully entered, the locking piece limits the side pressure block from the outside in the thickness direction of the installation plate. At this time, the upper slide plate is fixed in the installation cavity.

[0048] Connect the mounting plate and door frame through the pin shaft and door frame support on one side to form an open and close door structure, and install the surface pressure hook on the other side of the mounting plate;

[0049] Install the sliding frame in the sliding area between the door frame's pressing block and the door frame's bottom surface. At this time, the surface pressure spring assembly acts on the slide bars on both sides of the sliding frame.

[0050] Hook the closing pressure block through the T-shaped block at the end of the closing cylinder piston rod and pull it to the side close to the mounting plate, hook the surface pressure hook on the hook pin on the side of the door frame, and restrict the surface pressure hook with the anti-drop pin assembly to complete the assembly;

[0051] Step 2: Mechanism installation

[0052] Fix the mounting plate on the ladle reference plate;

[0053] Step 3, skateboard replacement

[0054] After the number of consecutive slidings on the friction surface of the upper and lower slides reaches the limit, remove the anti-drop pin assembly, then hook the closing pressure block through the T-shaped block at the end of the piston rod of the closing cylinder and pull it toward the side close to the mounting plate to separate the surface pressure hook and the hook pin, thus opening the inner cavity of the mechanism;

[0055] The manipulator clamps the upper and lower slides through the clamping claws. When the clamping claws enter the slide cavity and the installation cavity, they first move the clamping parts outward to contact the restriction of the opposite side pressure block, and then remove the upper and lower slides.

[0056] The manipulator is constructed by installing the upper slide plate in the slide plate cavity and the lower slide plate in the installation cavity, and the original non-friction surfaces of the upper slide plate and the lower slide plate serve as friction surfaces;

[0057] Rotate the door frame toward the side of the mounting plate, hook the door closing pressure block through the T-shaped block at the end of the piston rod of the door closing cylinder again and pull it toward the side close to the mounting plate, re-hook the surface pressure hook and the hook pin, and limit the surface pressure hook with the anti-drop pin assembly.

[0058] Compared with the prior art, the present invention has the following beneficial effects:

[0059] 1. By adding 16 springs, 14 transition pressure blocks and 2 transition rollers to the door frame component, ultra-high surface pressure is generated between the upper slide in the cavity of the mounting plate component and the lower slide in the cavity of the sliding frame component, solving the problem of molten steel leakage caused by insufficient surface pressure of the ladle sliding gate mechanism on extra-large ladles.

[0060] 2. By adding slots at both ends of the sliding frame components and freely switching between the two connection methods of the cylinder support components on the mounting plate components and the door frame components, the integration of upright and inverted installation of the mechanism is realized, which solves the problem that the steel plant is restricted in installation due to the on-site environment, location or installation method, and makes the structure of the ladle sliding nozzle mechanism more flexible and changeable.

[0061] 3. A heat-resistant magnet, a horseshoe iron and a cam device are respectively provided in the slide cavity of the mounting plate component and the sliding frame component. The slide is first adsorbed with the heat-resistant magnet, and then the cam device is rotated to push the horseshoe iron to clamp and fix the slide. The operation is simple, the slide is firm and reliable, and is not easy to loosen or fall off.

[0062] 4. The upper and lower slides adopt an asymmetric structure. When the number of consecutive sliding on the friction surface of the upper and lower slides reaches the limit, the door frame components of the mechanism are opened to swap the upper and lower slides. The non-friction surface becomes the friction surface again, and the service life of the upper and lower slides is doubled, which greatly improves the life of the refractory material and reduces the cost.

[0063] 5. The closing cylinder acts on the closing pressure block of the door frame component and the side notch of the mounting plate component to apply pressure, and the surface pressure hook is hung and disengaged to realize the closing and opening of the mechanism. The operation is convenient, safe and reliable.

[0064] 6. By replacing the two surface pressure hooks on the mounting plate and the two door frame supports on the door frame, the door opening direction of the mechanism can be changed, increasing the flexibility of the mechanism and adapting to the on-site environment.

[0065] 7. The two spring transition pressure blocks on the door frame components are changed into spring transition pressure wheels, which changes sliding into rolling, reduces friction, and avoids the situation where the sliding frame components cannot be pulled under high pressure.

[0066] 8. The spring is compressed to provide pressure by tightening the door frame body and the spring locking nut. The surface pressure of the mechanism can be adjusted by the spring locking nut, and the pressure can be adjusted according to the situation of the steel plant.

[0067] 9. A support block for supporting the water inlet installation tool is provided on the side of the installation plate, which can save the original manual support of the water inlet installation tool to install the water inlet. The support block can be freely replaced in four positions and is suitable for two door opening directions and two installation directions of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0069] Figure 2 It is a top view of the overall structure of the present invention;

[0070] Figure 3 for Figure 2 Cross-sectional view at the middle BB;

[0071] Figure 4 It is a schematic diagram of the overall structure of the mounting plate of the present invention;

[0072] Figure 5 A top view of the mounting plate of the present invention;

[0073] Figure 6 for Figure 5 Cross-section at AA in the middle;

[0074] Figure 7 It is a schematic diagram of the overall structure of the door frame of the present invention;

[0075] Figure 8 It is a schematic diagram of the overall structure of the sliding frame of the present invention;

[0076] Figure 9 It is a schematic diagram of the overall structure of the oil cylinder support of the present invention;

[0077] Figure 10 A cross-sectional view of a mounting plate in a clamping manner according to the present invention;

[0078] Figure 11 for Figure 10 A partial enlarged view of point D in the middle;

[0079] Figure 12 for Figure 11 Position distribution diagram of the middle half slot;

[0080] Figure 13 A cross-sectional view of a sliding frame of a clamping method according to the present invention;

[0081] Figure 14 for Figure 10 An expanded schematic diagram of the clamping assembly;

[0082] Figure 15 It is a cross-sectional view of the refractory material of the present invention. DETAILED DESCRIPTION

[0083] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0084] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0085] Example 1

[0086] like Figures 1 to 9 As shown, a sliding gate mechanism for a super-large ladle includes a mounting plate 1, a sliding frame 2, a door frame 3, a cylinder support 4, a refractory 5, a hydraulic cylinder, and a door-closing cylinder. The refractory 5 includes an upper slide 51, an upper water inlet 52, a lower slide 53, and a lower water inlet 54.

[0087] Among them, the sliding frame 2 is installed in the door frame 3, the cylinder support 4 is fixed on the door frame 3, the door frame 3 is connected to the mounting plate 1 through a pin and a surface pressure hook 10, the hydraulic cylinder is hung on the cylinder support 4, the hydraulic cylinder head is connected to the slot 25 of the sliding frame 2, and the refractory material 5 is installed in the mechanism cavity;

[0088] The mounting plate 1 is provided with two groups of connecting blocks 11 connected to the ladle reference plate, with two blocks provided on each side. Each connecting block 11 is provided with a notch and a hinge hole on the side of the notch for inserting a pin. The two pins on one side are used to rotate and connect the door frame 3, and the two pins on the other side are connected to two surface pressure hooks 10 for closing the door and maintaining pressure. The mounting plate 1 is provided with two openings for hanging the door-closing cylinder, which can be respectively used for the two closing directions of the mechanism. The mounting plate 1 is provided with a mounting cavity 12, and a clamping assembly 1 is installed in the mounting cavity 12. The clamping assembly is used to install the upper slide 51. The mounting cavity 12 is provided with a notch for installing a positioning ring 13, which is used for positioning the mechanism and the ladle reference plate during installation and for local replacement of parts in the event of thermal deformation and damage. The closing cylinder acts on the closing pressure block of the door frame component and the notch on the side of the mounting plate component to apply pressure, and the surface pressure hooks are hung and disengaged to achieve the closing and opening of the mechanism, which is convenient, safe and reliable to operate. At the same time, the door opening direction of the mechanism can be changed by interchanging the positions of the door frame support and the surface pressure hook.

[0089] One side of the door frame 3 is connected to the door frame support 32 for connecting to the mounting plate 1, and the other side is connected to two sets of hook pins 31 and a closing pressure block located between the two sets of hook pins 31 for applying pressure to the closing cylinder when closing the door. The door frame 3 on the same side of the hook pin 31 is provided with an anti-drop pin assembly 33 to prevent the surface pressure hook 10 from disengaging. The side of the door frame 3 opposite to the sliding frame 2 is provided with a surface pressure spring assembly for ultra-high pressure surface pressure on the upper slide 51 and the lower slide 53;

[0090] The sliding frame 2 is provided with a slide cavity 21, and a slot is provided in the slide cavity 21 for installing a detachable tightening sleeve 22. The tightening sleeve 22 is partially exposed on the outside of the sliding frame 2 and is connected to a heat insulation board 23. The tightening sleeve 22 is equipped with a tightener 24 for tightening the lower water outlet 54. A clamping component 2 is installed in the slide cavity 21, and the clamping component 2 is used to install the lower slide 53. A slot 25 is provided at one end of the sliding frame 2, and a push-pull rod assembly 26 is provided at the other end. Two slides 27 are provided on both sides of the sliding frame for bearing the pressure of the surface pressure spring assembly and enabling relative sliding. By adding slots and cylinder supports at both ends of the sliding frame, the two connection modes of the mounting plate and the door frame components can be freely switched to realize the integration of upright and inverted installation of the mechanism, which solves the problem that the steel plant is restricted in installation due to the on-site environment location or installation method, and makes the structure of the ladle sliding water outlet mechanism more flexible and changeable.

[0091] The oil cylinder support 4 comprises an oil cylinder support body 41 formed by welding, a protective plate 42 for protection and a latch 43 for connection and fixing.

[0092] Example 2

[0093] In the said institution, Figure 4As shown, the mounting cavity 12 is provided with a clamping groove 25 on both sides for positioning and clamping the water inlet installation tool when installing the water inlet 52;

[0094] A support block 14 for supporting the water inlet installation tool is provided on the side of the installation plate 1, which can save the original manual support of the water inlet installation tool to install the water inlet. The support block 14 can be freely replaced in four positions and is suitable for two door opening directions and two installation directions of the mechanism.

[0095] A hexagon socket screw is installed on the mounting plate 1 to support one end of the fixed pin to prevent rotation;

[0096] like Figure 7 As shown, two pressing blocks 34 are respectively provided on both sides of the door frame 3, which are used to be pre-compressed by the surface pressure spring assembly to prevent the sliding frame 2 from falling due to its own weight when the door is open.

[0097] Example 3

[0098] In the said institution, Figure 4 and Figure 5 As shown, the mounting plate 1 is internally slotted and perforated to connect two welded air vent plates 15 on the surface. The two air vent plates 15 are used to cool the surface pressure spring assembly; they are used to cool the high-temperature radiation at the heated part of the cooling mechanism and improve the service life of the mechanism.

[0099] like Figure 3 、 7 As shown, the surface pressure spring assembly includes a countersunk hole 1 and a countersunk hole 2 arranged on the door frame 3, and a coil spring 1 35, a transition pressure wheel 36 and a locking nut 1 37 are installed in the countersunk hole, and a transition pressure block 38, a coil spring 2 39 and a locking nut 2 310 are installed in the countersunk hole 2. The transition pressure block 38 and the transition pressure wheel 36 are partially exposed on the outside of the door frame 3 for surface pressure on the sliding frame 2; wherein, an air hole is provided on the transition pressure block 38.

[0100] Example 4

[0101] In the said institution, Figure 4 and Figure 8 As shown, the installation cavity 12 and the positioning ring 13, the slide cavity 21 and the tightening sleeve 22 are all provided with five long notches, which are used to buffer the molten steel when accidental steel seepage occurs between the nozzle and the slide to avoid burning the mechanism.

[0102] like Figure 1 As shown, the heat insulation board 23 is provided with three positioning pointers for observing the moving position of the sliding frame 2 .

[0103] Example 5

[0104] In the said institution, Figure 4 、 5As shown in , 6, and 8, the clamping assembly 1 includes a heat-resistant magnetic steel 121 and a horseshoe iron 122 arranged in the mounting cavity 12. The heat-resistant magnetic steel 121 is used to adsorb and fix the upper slide 51, and the horseshoe iron 122 is used to move inward and clamp and fix the upper slide 51. A pushing member 123 is installed on the mounting plate 1 and is located on one side of the mounting cavity 12. The pushing member 123 is used to squeeze the horseshoe iron 122 into the mounting cavity 12.

[0105] The second clamping component includes a second heat-resistant magnetic steel 211 and a second horseshoe iron 212 arranged in the skateboard cavity 21. The second heat-resistant magnetic steel 211 is used to adsorb and fix the lower skateboard 53, and the second horseshoe iron 212 is used to move inward and clamp and fix the lower skateboard 53. The sliding frame 2 is provided with a second pushing piece 213 located on one side of the skateboard cavity 21. The pushing piece 213 is used to squeeze the second horseshoe iron 212 into the skateboard cavity 21.

[0106] like Figure 6 As shown, the pushing member 123 and the pushing member 213 both include a sinking groove, a fixing plate is installed at the notch of the sinking groove, and a cam is installed on the fixing plate. The cam is located in the sinking groove and is used to push the horseshoe iron 122 or the horseshoe iron 212 to press and fix the upper slide 51 or the lower slide 53;

[0107] Side grooves are provided in the middle of both sides of the horseshoe iron 122 or the horseshoe iron 212;

[0108] A guide rod 6 is installed inside the installation cavity 12 and the sliding cavity. A conductor protruding outward is provided on the side of the guide rod 6. The conductor and the side groove are positioned correspondingly and are installed in a sliding manner.

[0109] Example 6

[0110] In the said institution, Figure 10 、 Figure 11 、 Figure 12 As shown, the clamping assembly 1 and the clamping assembly 2 both include a side pressure block 7 and a clamping member 8, and a sliding pin 1 71 and a sliding pin 2 72 are installed on the side pressure block 7. The sliding pin 1 71 and the side pressure block 7 are connected by a torsion spring, and a half groove 1 73 for sliding pin 1 71 and a half groove 2 74 for sliding pin 2 72 are provided along the thickness direction on the mounting plate 1 and the sliding frame 2; a rectangular groove is provided on the side of the slide plate.

[0111] like Figure 11 As shown, a pressure block 75 and a limit block 76 are provided on the side pressure block 7. The pressure block 75 is located to receive the corresponding slide, and the limit block 76 is used to limit the position of the slide; the limit block 76 includes a baffle, a transverse plug-in shaft, and a spring body. The transverse plug-in shaft is laterally arranged near the top of the side pressure block 7, and the transverse plug-in shaft is connected to the inner side of the side pressure block 7 through the spring body. The baffle is used to limit the maximum stroke of the transverse plug-in shaft extending toward the side of the slide, and the transverse plug-in shaft corresponds to and is plugged into the rectangular groove.

[0112] As shown Figure 11 and Figure 12 As shown, the latch 8 is located on the mounting plate 1 and sliding frame 2 outside the side pressure block 7. The latch 8 is an elastic and retractable structure, and the end of the latch 8 closest to the mounting plate 1 and sliding plate is a sloped structure that gradually approaches the sliding pin 71. When the latch 8 is restrained by the side of the side pressure block 7, the transverse insertion shaft is inserted into the rectangular groove. When the latch 8 contacts the side of the clamp, the transverse insertion shaft is reset and released from the rectangular groove under the action of the spring.

[0113] A method for using an extra-large ladle sliding nozzle mechanism, comprising:

[0114] Step 1: Mechanism assembly

[0115] Install the water outlet 54 and the tightening sleeve 22 in the slide cavity 21 of the sliding frame 2, and fix the water outlet 54 with the tightening device 24. Place the lower slide 53 in the slide cavity 21. After being adsorbed by the heat-resistant magnetic steel 121, the lower slide 53 is fixed in the slide cavity 21 by rotating the cam of the pushing member 123.

[0116] Install the water inlet 52 and the positioning ring 13 in the installation cavity 12. Place the upper slide 51 in the installation cavity 12. After being adsorbed by the second heat-resistant magnetic steel 211, the upper slide 51 is fixed in the installation cavity 12 by rotating the cam of the second pusher 213.

[0117] The mounting plate 1 and the door frame 3 are connected through the pin shaft and the door frame support 32 on one side to form an open and close door structure, and the surface pressure hook 10 is installed on the other side of the mounting plate 1;

[0118] Install the sliding frame 2 in the sliding area between the pressing block 34 of the door frame 3 and the bottom surface of the door frame 3. At this time, the surface pressure spring assembly acts on the sliding bars 27 on both sides of the sliding frame 2.

[0119] The T-shaped block at the end of the piston rod of the door closing cylinder is hooked to the door closing pressure block and pulled to the side close to the mounting plate 1, so that the surface pressure hook 10 is hooked on the hook pin 31 on the side of the door frame 3, and the anti-drop pin assembly 33 is used to restrict the surface pressure hook 10 to complete the assembly;

[0120] Step 2: Mechanism installation

[0121] The mounting plate 1 is fixedly mounted on the ladle reference plate;

[0122] Step 3, skateboard replacement

[0123] After the number of consecutive sliding movements on the friction surface between the upper slide plate 51 and the lower slide plate 53 reaches the limit, the anti-drop pin assembly 33 is removed, and the closing pressure block is hooked by the T-shaped block at the end of the piston rod of the closing cylinder and pulled toward the side close to the mounting plate 1, separating the surface pressure hook 10 from the hook pin and opening the inner cavity of the mechanism;

[0124] The manipulator rotates the cam of the push member in the opposite direction to loosen the upper slide plate 51 and the lower slide plate 53, and removes them through the manipulator;

[0125] The manipulator is constructed by installing the upper slide 51 in the slide cavity 21 and the lower slide 53 in the mounting cavity 12, and the original non-friction surfaces of the upper slide 51 and the lower slide 53 serve as friction surfaces;

[0126] Rotate the door frame 3 toward the side of the mounting plate 1, hook the door closing pressure block again through the T-shaped block at the end of the closing cylinder piston rod and pull it toward the side close to the mounting plate 1, re-hook the surface pressure hook 10 and the hook pin, and restrict the surface pressure hook 10 with the anti-drop pin assembly 33.

[0127] A method for using an extra-large ladle sliding nozzle mechanism, comprising:

[0128] Step 1: Mechanism assembly

[0129] The water outlet 54 and the tightening sleeve 22 are installed in the slide cavity 21 of the sliding frame 2, and the water outlet 54 is fixed by the tightening device 24. The lower slide 53 is aligned with the slide cavity 21 and the lower slide 53 is installed axially in the slide cavity 21. During the axial installation process, the non-friction surface of the lower slide 53 acts on the pressure block 75 to deflect the side pressure block 7 inward, and the limit block 76 limits the position of the lower slide 53. When the second sliding pin 72 enters the second half groove 74, the lower slide 53 completes the position alignment with the slide cavity 21. After the second sliding pin 72 is fully entered, the locking member 8 limits the side pressure block 7 from the outside of the side pressure block 7 in the thickness direction of the slide frame. At this time, the lower slide 53 is fixed in the slide cavity 21;

[0130] Install the water inlet 52 and the positioning ring 13 in the installation cavity 12, align the upper slide 51 with the installation cavity 12 and install the lower slide 53 in the installation cavity 12 along the axial direction. During the axial installation process, the non-friction surface of the upper slide 51 acts on the pressure block 75 to deflect the side pressure block 7 inward, and the limit block 76 limits the position of the upper slide 51. When the second sliding pin 72 enters the second half groove 74, the upper slide 51 completes the position alignment with the installation cavity 12. After the second sliding pin 72 is fully entered, the locking member 8 limits the side pressure block 7 from the outside of the side pressure block 7 in the thickness direction of the installation plate 1. At this time, the upper slide 51 is fixed in the installation cavity 12;

[0131] The mounting plate 1 and the door frame 3 are connected through the pin shaft and the door frame support 32 on one side to form an open and close door structure, and the surface pressure hook 10 is installed on the other side of the mounting plate 1;

[0132] Install the sliding frame 2 in the sliding area between the pressing block 34 of the door frame 3 and the bottom surface of the door frame 3. At this time, the surface pressure spring assembly acts on the sliding bars 27 on both sides of the sliding frame 2.

[0133] The T-shaped block at the end of the piston rod of the door closing cylinder is hooked to the door closing pressure block and pulled to the side close to the mounting plate 1, so that the surface pressure hook 10 is hooked on the hook pin 31 on the side of the door frame 3, and the anti-drop pin assembly 33 is used to restrict the surface pressure hook 10 to complete the assembly;

[0134] Step 2: Mechanism installation

[0135] The mounting plate 1 is fixedly mounted on the ladle reference plate;

[0136] Step 3, skateboard replacement

[0137] After the number of consecutive sliding movements on the friction surface between the upper slide plate 51 and the lower slide plate 53 reaches the limit, the anti-drop pin assembly 33 is removed, and the closing pressure block is hooked by the T-shaped block at the end of the piston rod of the closing cylinder and pulled toward the side close to the mounting plate 1, separating the surface pressure hook 10 from the hook pin and opening the inner cavity of the mechanism;

[0138] The manipulator clamps the upper slide 51 and the lower slide 53 with the clamping claws. When the clamping claws enter the slide cavity 21 and the installation cavity 12, they first move the clamping member 8 outward to contact the restriction of the opposite side pressure block 7, and then remove the upper slide 51 and the lower slide 53.

[0139] The manipulator is constructed by installing the upper slide 51 in the slide cavity 21 and the lower slide 53 in the mounting cavity 12, and the original non-friction surfaces of the upper slide 51 and the lower slide 53 serve as friction surfaces;

[0140] Rotate the door frame 3 toward the side of the mounting plate 1, hook the door closing pressure block again through the T-shaped block at the end of the closing cylinder piston rod and pull it toward the side close to the mounting plate 1, re-hook the surface pressure hook 10 and the hook pin, and restrict the surface pressure hook 10 with the anti-drop pin assembly 33.

[0141] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The replacement may be a replacement of a portion of a structure, device, or method step, or it may be a complete technical solution. Any equivalent replacement or modification based on the technical solution and inventive concept of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A sliding gate mechanism for an extra-large ladle, comprising a mounting plate (1), a sliding frame (2), a door frame (3), a cylinder support (4), a refractory material (5), a hydraulic cylinder, and a door-closing cylinder, wherein the refractory material (5) comprises an upper slide plate (51), an upper water inlet (52), a lower slide plate (53), and a lower water inlet (54); in, The sliding frame (2) is installed in the door frame (3), the oil cylinder support (4) is fixed on the door frame (3), the door frame (3) is connected to the mounting plate (1) through a pin shaft and a surface pressure hook (10), the hydraulic cylinder is hung on the oil cylinder support (4), the hydraulic cylinder head is connected to the slot (25) of the sliding frame (2), and the refractory material (5) is installed in the mechanism cavity; Its characteristics are: The mounting plate (1) is provided with two groups of connecting blocks (11) connected to the ladle reference plate, with two being provided on each group on the left and right. Each connecting block (11) is provided with a notch and a hinge hole located on the side of the notch for inserting a pin shaft therein. The two pin shafts located on one side are used for rotating and connecting the door frame (3), and the two pin shafts on the other side are connected to two surface pressure hooks (10) for closing the door, fixing it and maintaining pressure. The mounting plate (1) is provided with two opening grooves for hanging and closing the door cylinder. The mounting plate (1) is provided with a mounting cavity (12). A clamping assembly 1 is installed in the mounting cavity (12). The clamping assembly is used to install the upper slide plate (51). A notch is provided in the mounting cavity (12) for installing a positioning ring (13). One side of the door frame (3) is connected to a door frame support (32) for connecting to a mounting plate (1); the other side is connected to two groups of hook pins (31) and a door closing pressure block (311) located between the two groups of hook pins (31) for applying pressure when the door closing cylinder closes the door; an anti-drop pin assembly (33) for preventing the surface pressure hook (10) from being disengaged is provided on the door frame (3) located on the same side as the hook pin (31); a surface pressure spring assembly for ultra-high pressure surface pressure on the upper slide plate (51) and the lower slide plate (53); The sliding frame (2) is provided with a slide cavity (21), a notch is provided in the slide cavity (21) for installing a detachable top tightening sleeve (22), the top tightening sleeve (22) is partially exposed on the outside of the sliding frame (2) and is connected to a heat insulation board (23), the top tightening sleeve (22) is equipped with a top tightener (24) for tightening the water outlet (54), a clamping assembly 2 is installed in the slide cavity (21), the clamping assembly 2 is used to install the lower slide (53), a card slot (25) is provided at one end of the sliding frame (2), and a push-pull rod assembly (26) is provided at the other end, and two slide bars (27) are provided on both sides of the sliding frame (2) for bearing the pressure of the surface pressure spring assembly and enabling relative sliding; The oil cylinder support (4) comprises an oil cylinder support body (41) formed by welding, a protective plate (42) having a protective function, and a latch (43) for connection and fixing.

2. The sliding gate mechanism of an extra-large ladle according to claim 1, characterized in that: The slide cavity (21) is provided with a clamping groove (25) on both sides for positioning and clamping the water inlet installation tool when installing the water inlet (52); A support block (14) for supporting a water inlet installation tool is provided on the side of the installation plate (1); A hexagon socket screw is installed on the mounting plate (1) to support one end of the fixed pin to prevent rotation; Two pressing blocks (34) are respectively provided on both sides of the door frame (3) for preventing the sliding frame (2) from falling due to its own weight when the door is open, by being pre-compressed by the surface pressure spring assembly.

3. The sliding gate mechanism of an extra-large ladle according to claim 1, characterized in that: The mounting plate (1) is internally slotted and perforated to connect two welded air-permeable plates (15) on the surface; The surface pressure spring assembly comprises a first countersunk hole and a second countersunk hole provided on the door frame (3); a first coil spring (35), a transition pressure wheel (36) and a first locking nut (37) are installed in the countersunk hole; a transition pressure block (38), a second coil spring (39) and a second locking nut (310) are installed in the second countersunk hole; the transition pressure block (38) and the transition pressure wheel (36) are partially exposed on the outside of the door frame (3) for surface pressure on the sliding frame (2); Wherein, the transition pressure block (38) is provided with an air hole.

4. The sliding gate mechanism of an extra-large ladle according to claim 1, characterized in that: The installation cavity (12), the positioning ring (13), the slide cavity (21) and the top sleeve (22) are all provided with five long notches, which are used to buffer the molten steel when accidental steel seepage occurs between the nozzle and the slide, thereby avoiding burning of the mechanism.

5. The sliding gate mechanism of an extra-large ladle according to claim 1, characterized in that: The heat insulation board (23) is provided with three positioning pointers for observing the moving position of the sliding frame (2).

6. The sliding gate mechanism of an extra-large ladle according to any one of claims 1 to 5, characterized in that: The clamping assembly includes a heat-resistant magnetic steel (121) and a horseshoe iron (122) arranged in the installation cavity (12), the heat-resistant magnetic steel (121) is used to absorb and fix the upper slide plate (51), the horseshoe iron (122) is used to move inward to clamp and fix the upper slide plate (51), and a pushing piece (123) located on one side of the installation cavity (12) is installed on the installation plate (1), and the pushing piece (123) is used to squeeze the horseshoe iron (122) into the installation cavity (12); The clamping assembly 2 comprises a heat-resistant magnetic steel 2 (211) and a horseshoe iron 2 (212) arranged in the slide cavity (21); the heat-resistant magnetic steel 2 (211) is used for adsorbing and fixing the lower slide (53); the horseshoe iron 2 (212) is used for moving inward to clamp and fix the lower slide (53); and a push piece 2 (213) located on one side of the slide cavity (21) is installed on the sliding frame (2); the push piece 2 (213) is used for squeezing the horseshoe iron 2 (212) into the interior of the slide cavity (21).

7. The sliding gate mechanism of an extra-large ladle according to claim 6, characterized in that: The pushing member 1 (123) and the pushing member 2 (213) both include a sinking groove, a fixing plate is installed at the notch of the sinking groove, a cam is installed on the fixing plate, the cam is located in the sinking groove and is used to push the horseshoe iron 1 (122) or the horseshoe iron 2 (212) to press and fix the upper slide plate (51) or the lower slide plate (53); Side grooves are provided at the middle of both sides of the horseshoe-shaped iron (122) or the horseshoe-shaped iron (212); A guide rod (6) is installed inside the installation cavity (12) and the sliding cavity. A conductor protruding outward is provided on the side of the guide rod (6). The conductor and the side groove are positioned correspondingly and are installed in a sliding manner.

8. The sliding gate mechanism of an extra-large ladle according to any one of claims 1 to 5, characterized in that: The clamping assembly 1 and the clamping assembly 2 both include a side pressure block (7) and a clamping member (8); a sliding pin 1 (71) and a sliding pin 2 (72) are installed on the side pressure block (7); the sliding pin 1 (71) and the side pressure block (7) are connected by a torsion spring; a half groove 1 (73) for sliding pin 1 (71) and a half groove 2 (74) for sliding pin 2 (72) are provided on the mounting plate (1) and the sliding frame (2) along the thickness direction; A pressure block (75) and a limit block (76) are provided on the side pressure block (7), the pressure block (75) is located to receive the corresponding slide, and the limit block (76) is used to limit the position of the slide; The clamping member (8) is located on the mounting plate (1) and the sliding plate outside the side pressure block (7). The clamping member (8) is an elastic telescopic structure. One end of the clamping member (8) close to the mounting plate (1) and the sliding plate is a slope structure that gradually approaches the sliding pin (71).

9. A method for using a sliding nozzle mechanism of an extra-large ladle, comprising the mechanism according to any one of claims 1 to 7, characterized in that: include: Step 1: Mechanism assembly The water outlet (54) and the tightening sleeve (22) are installed in the slide cavity (21) of the sliding frame (2), and the water outlet (54) is fixed by the tightening device (24). The lower slide plate (53) is placed in the slide cavity (21), and after being adsorbed by the heat-resistant magnetic steel (121), the lower slide plate (53) is fixed in the slide cavity (21) by rotating the cam of the pushing member (123); The water inlet (52) and the positioning ring (13) are installed in the installation cavity (12), and the upper slide plate (51) is placed in the installation cavity (12). After being adsorbed by the second heat-resistant magnetic steel (211), the upper slide plate (51) is fixed in the installation cavity (12) by rotating the cam of the second push member (213); The mounting plate (1) and the door frame (3) are connected via a pin shaft and a door frame support (32) on one side to form an openable and closed door structure, and a surface pressure hook (10) is installed on the other side of the mounting plate (1); The sliding frame (2) is installed in the sliding area between the pressing block (34) of the door frame (3) and the bottom surface of the door frame (3), and the surface pressure spring assembly acts on the slide bars (27) on both sides of the sliding frame (2); The door closing pressure block (311) is hooked by the T-shaped block at the end of the door closing oil cylinder piston rod and pulled toward the side close to the mounting plate (1), so that the surface pressure hook (10) is hooked on the hook pin (31) on the side of the door frame (3), and the anti-drop pin assembly (33) is used to limit the surface pressure hook (10), thereby completing the assembly; Step 2: Mechanism installation The mounting plate (1) is fixedly mounted on the ladle reference plate; Step 3, skateboard replacement After the number of consecutive sliding movements of the friction surface of the upper slide plate (51) and the lower slide plate (53) reaches a limit, the anti-drop pin assembly (33) is removed, and the closing pressure block (311) is hooked through the T-shaped block at the end of the piston rod of the closing oil cylinder and pulled toward the side close to the mounting plate (1), thereby separating the surface pressure hook (10) and the hook pin, and opening the inner cavity of the mechanism; The manipulator rotates the cam of the push member in the opposite direction to loosen the upper slide plate (51) and the lower slide plate (53), and removes them through the manipulator; The manipulator is constructed by installing an upper slide plate (51) in a slide plate cavity (21) and a lower slide plate (53) in a mounting cavity (12), and using the original non-friction surfaces of the upper slide plate (51) and the lower slide plate (53) as friction surfaces; The door frame (3) is rotated toward the side of the mounting plate (1), and the door closing pressure block (311) is hooked again through the T-shaped block at the end of the piston rod of the door closing oil cylinder and pulled toward the side close to the mounting plate (1), so that the surface pressure hook (10) and the hook pin are hooked again, and the anti-drop pin assembly (33) limits the surface pressure hook (10).

10. A method for using a sliding gate mechanism of an extra-large ladle, comprising the mechanism according to claim 8, characterized in that: include: Step 1: Mechanism assembly The water outlet (54) and the top tightening sleeve (22) are installed in the slide cavity (21) of the sliding frame (2), and the water outlet (54) is fixed by the top tightening device (24). The lower slide plate (53) is aligned with the slide cavity (21) and the lower slide plate (53) is installed in the slide cavity (21) along the axial direction. During the axial installation process, the non-friction surface of the lower slide plate (53) acts on the pressure block (75) to deflect the side pressure block (7) inwardly. The limit block (76) limits the position of the lower slide plate (53). When the second sliding pin (72) enters the second half groove (74), the lower slide plate (53) is aligned with the slide cavity (21). When the second sliding pin (72) is completely entered, the clamping member (8) limits the side pressure block (7) in the thickness direction of the slide frame from the outside of the side pressure block (7). At this time, the lower slide plate (53) is fixed in the slide cavity (21); The upper water inlet (52) and the positioning ring (13) are installed in the installation cavity (12), the upper slide plate (51) is aligned with the installation cavity (12) and the lower slide plate (53) is installed in the installation cavity (12) along the axial direction. During the axial installation process, the non-friction surface of the upper slide plate (51) acts on the pressure block (75) to deflect the side pressure block (7) inward, and the limit block (76) limits the position of the upper slide plate (51). When the second sliding pin (72) enters the second half groove (74), the upper slide plate (51) is aligned with the installation cavity (12). When the second sliding pin (72) is completely entered, the locking member (8) limits the side pressure block (7) in the thickness direction of the installation plate (1) from the outside of the side pressure block (7). At this time, the upper slide plate (51) is fixed in the installation cavity (12); The mounting plate (1) and the door frame (3) are connected via a pin shaft and a door frame support (32) on one side to form an openable and closed door structure, and a surface pressure hook (10) is installed on the other side of the mounting plate (1); The sliding frame (2) is installed in the sliding area between the pressing block (34) of the door frame (3) and the bottom surface of the door frame (3), and the surface pressure spring assembly acts on the slide bars (27) on both sides of the sliding frame (2); The door closing pressure block (311) is hooked by the T-shaped block at the end of the door closing oil cylinder piston rod and pulled toward the side close to the mounting plate (1), so that the surface pressure hook (10) is hooked on the hook pin (31) on the side of the door frame (3), and the anti-drop pin assembly (33) is used to limit the surface pressure hook (10), thereby completing the assembly; Step 2: Mechanism installation The mounting plate (1) is fixedly mounted on the ladle reference plate; Step 3, skateboard replacement After the number of consecutive sliding movements of the friction surface of the upper slide plate (51) and the lower slide plate (53) reaches a limit, the anti-drop pin assembly (33) is removed, and the closing pressure block (311) is hooked through the T-shaped block at the end of the piston rod of the closing oil cylinder and pulled toward the side close to the mounting plate (1), thereby separating the surface pressure hook (10) and the hook pin, and opening the inner cavity of the mechanism; The manipulator clamps the upper slide plate (51) and the lower slide plate (53) through the clamping claws. When the clamping claws enter the interior of the slide plate cavity (21) and the interior of the installation cavity (12), the clamping claws first move the blocking member (8) outward to contact the restriction of the opposite side pressure block (7), and then remove the upper slide plate (51) and the lower slide plate (53); The manipulator is constructed by installing an upper slide plate (51) in a slide plate cavity (21) and a lower slide plate (53) in a mounting cavity (12), and using the original non-friction surfaces of the upper slide plate (51) and the lower slide plate (53) as friction surfaces; The door frame (3) is rotated toward the side of the mounting plate (1), and the door closing pressure block (311) is hooked again through the T-shaped block at the end of the piston rod of the door closing oil cylinder and pulled toward the side close to the mounting plate (1), so that the surface pressure hook (10) and the hook pin are hooked again, and the anti-drop pin assembly (33) limits the surface pressure hook (10).

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