CN107891131B - Crystallizer centering device and centering method for round billet continuous casting machine - Google Patents
Crystallizer centering device and centering method for round billet continuous casting machine Download PDFInfo
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- CN107891131B CN107891131B CN201711346045.4A CN201711346045A CN107891131B CN 107891131 B CN107891131 B CN 107891131B CN 201711346045 A CN201711346045 A CN 201711346045A CN 107891131 B CN107891131 B CN 107891131B
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- 238000009749 continuous casting Methods 0.000 title claims abstract description 172
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000009434 installation Methods 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000009628 steelmaking Methods 0.000 abstract description 2
- 238000005266 casting Methods 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000725 suspension Substances 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
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/057—Manufacturing or calibrating the moulds
Abstract
The invention discloses a centering device and a centering method for a round billet continuous casting machine crystallizer, and belongs to the technical field of steelmaking continuous casting equipment. The centering device comprises an adjusting plate, wherein a first reference rod and a second reference rod are vertically connected to the adjusting plate, positioning rods are connected to two ends of the adjusting plate, a thimble is connected to the second reference rod, a nut is connected to the thimble, a fixing plate is further connected to the lower portion of the adjusting plate, a first connecting plate and a second connecting plate are connected to one end of the fixing plate and one end of the adjusting plate respectively, and the first connecting plate and the second connecting plate are connected through adjusting screws. When the invention is used, the extending length of the thimble is adjusted by rotating the nut, so that the distance from the tip of the thimble to the first reference rod is L, the adjusting screw is adjusted, the thimble contacts the inner wall of the outer arc side of the crystallizer of the round billet continuous casting machine, and finally the installation shaft sleeve of the crystallizer of the round billet continuous casting machine is locked, so that the centering is completed. The invention is suitable for centering adjustment of the round billet continuous casting machine crystallizer with various specifications, and has the advantages of accurate centering, convenient operation, low manufacturing cost and strong practicability.
Description
Technical Field
The invention relates to the technical field of steelmaking continuous casting equipment, in particular to a crystallizer centering device and a centering method of a round billet continuous casting machine.
Background
The casting blank produced by the round billet continuous casting machine is a raw material for steel rolling, the quality of the casting blank directly influences the quality of a final product, the round billet continuous casting machine crystallizer is a heart of the round billet continuous casting machine, the installation accuracy of the round billet continuous casting machine crystallizer influences the arc accuracy of the round billet continuous casting machine crystallizer, and the arc accuracy of the round billet continuous casting machine crystallizer is an important factor influencing the surface quality of the casting blank, so that the installation accuracy of the round billet continuous casting machine crystallizer seriously influences the quality of the casting blank. The arc calibration of the continuous casting machine is needed before the casting of the round billet continuous casting machine, and the arc calibration mode of the round billet continuous casting machine is that the crystallizer of the round billet continuous casting machine finishes the arc calibration of the foot roller on the offline storage rack and then is put on line, and then the arc calibration template is put on line to detect the connecting radian of the crystallization and the fixed guide section. The premise of precise alignment is that the alignment of the round billet caster crystallizer and the vibrating table is very precise. The mould of the round billet continuous casting machine is hoisted to the vibrating table, and then the centering of the mould of the round billet continuous casting machine and the vibrating table is realized through the adjustable mounting shaft sleeve on the mould of the round billet continuous casting machine. Because the installation space is limited, measurement is inconvenient, a lot of errors can appear when adjusting round billet caster crystallizer mounted position to lead to the correction arc at the back all can have the mistake, greatly influence the quality of casting blank, and take place the steel leakage accident easily. The round billet continuous casting machine crystallizer is a casting inlet of the round billet continuous casting machine, and the vertical height is up to 15m or even higher, so that potential safety hazards are caused to maintenance personnel, and the maintenance personnel take time, waste energy and prolong the centering time.
Through searching, chinese patent: CN201510748605.3, publication date: 2016.02.17 an online rapid arc alignment method for a crystallizer and a movable section of an arc billet continuous casting machine comprises the steps of adjusting a strip level to enable a measuring reference surface at the lower part of an arc alignment sample plate to be vertical to a horizontal plane when a bubble is centered; clamping the clamping legs of the arc alignment template on the 2 nd foot rollers of the inner arc and the outer arc of the crystallizer, enabling the first measurement reference surface to be tangent with the foot rollers, enabling the second measurement reference surface to be tangent with the inner arc or the outer arc roller of the roller frame of the movable section 1# and enabling the reading value of the level meter to be larger than or equal to 0.2mm, and carrying out online adjustment on the crystallizer until the reading value of the level meter is smaller than 0.2mm; the arc alignment template clamping feet are tightly clamped on a foot roller 2 of a left side roller or a right side roller of the crystallizer, a first measurement reference surface is tangent to the foot roller, and if the numerical value of a reading level is not less than 0.2mm, the crystallizer is subjected to online adjustment until the reading of the level is not more than 0.2mm. The invention has the advantages of high accuracy of arc alignment and rapidness and convenience of arc alignment, but the on-line arc alignment can cause potential safety hazard to maintenance personnel, and the maintenance personnel takes time, wastes labor and prolongs the arc alignment time.
Disclosure of Invention
1. Technical problem to be solved by the invention
Aiming at the problems that after a round billet continuous casting machine crystallizer is hoisted to a vibrating table by using the traditional method, the centering mode of the round billet continuous casting machine crystallizer and the vibrating table is realized by adjusting an installation shaft sleeve on the round billet continuous casting machine crystallizer, the centering precision is low, potential safety hazards exist in the centering process, time and labor are wasted, and the maintenance time is prolonged, the invention provides the centering device and the centering method of the round billet continuous casting machine crystallizer, which can realize the off-line centering of the round billet continuous casting machine crystallizer, and have the advantages of high centering precision, safer off-line centering, quick and labor-saving centering process, simple self structure, convenient operation and low manufacturing cost.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the utility model provides a round billet continuous casting machine crystallizer centering device, it includes the regulating plate, be connected with reference bar I and reference bar II on the regulating plate perpendicularly, reference bar I and reference bar II are located on the symmetry middle line of regulating plate to guarantee that the side of reference bar II can tangent with the top department of round billet continuous casting machine crystallizer's extrados when centering, reference bar I and reference bar II's looks back are L, L is the distance of round billet continuous casting machine crystallizer's central line to round billet continuous casting machine crystallizer's extrados, when reference bar II tangent with round billet continuous casting machine crystallizer's extrados, the central line of round billet continuous casting machine crystallizer just is located on reference bar I's side; the two ends of the adjusting plate are vertically connected with positioning rods, the positioning rods are symmetrical along the symmetrical central line of the adjusting plate, and the positioning rods correspond to positioning pins on the vibrating table in the centering process of the round billet continuous casting machine crystallizer and are inserted into the mounting shaft sleeve of the round billet continuous casting machine crystallizer.
According to the technical scheme, the second reference rod is connected with the thimble, the tip of the thimble points to one side far away from the first reference rod, the thimble is connected with the nut, and the distance from the tip of the thimble to the reference surface on the first reference rod can be adjusted by rotating the nut.
According to the scheme, the first reference rod is provided with the reference surface, the distance from the side surface of the second reference rod, which is far away from the first reference rod, to the reference surface is L, and the center line of the positioning rod is coplanar with the center line of the crystallizer of the round billet continuous casting machine and is arranged on the reference surface of the first reference rod.
The scheme is further improved, a fixing plate is connected below the adjusting plate, one or two square through holes are formed in the fixing plate, the square through holes are located on the symmetrical central line of the fixing plate, and the first reference rod and the second reference rod penetrate through the square through holes respectively. It can be appreciated that when only one square through hole is formed in the fixing plate, the first reference bar and the second reference bar pass through the square through holes; when two square through holes are formed in the fixing plate, the first reference rod and the second reference rod respectively penetrate through different square through holes. The square through holes are positioned on the symmetrical central line of the fixed plate so as to ensure that the planes of the first reference rod and the second reference rod pass through the top end of the outer cambered surface of the circular blank continuous casting machine crystallizer.
Further improvements are made to the above scheme, wherein: the fixing plate is provided with a plurality of circular through holes, the circular through holes are positioned on the symmetrical central line of the fixing plate, and the circular through holes are internally threaded holes and are used for installing fixing screws for connecting the fixing plate and the adjusting plate together; one or more waist-shaped through holes are formed in the adjusting plate, and the waist-shaped through holes are positioned on the symmetrical central line of the adjusting plate; it will be appreciated that when only one waist-shaped through hole is provided in the adjustment plate, the length of the waist-shaped through hole should be long enough to ensure that it communicates with all the circular through holes in the fixing plate; at least three circular through holes are vertically communicated with the waist-shaped through holes.
The technical scheme is further improved, and the round billet continuous casting machine crystallizer centering device further comprises pins, wherein the pins are inserted into the holes which are vertically communicated with the round through holes, the waist-shaped through holes and the pin holes at the round billet continuous casting machine crystallizer ports and used for locking the positions of the round billet continuous casting machine crystallizer centering device on the round billet continuous casting machine crystallizer so as to ensure that the round billet continuous casting machine crystallizer centering device cannot move left and right or back and forth at the round billet continuous casting machine crystallizer ports, the number of the two pins is the same as the number of the pin holes at the round billet continuous casting machine crystallizer ports, and the round billet continuous casting machine crystallizer centering device cannot rotate around a pin hole at the round billet continuous casting machine crystallizer ports.
According to the scheme, a first connecting plate is fixed at one end of the fixing plate, a second connecting plate is fixed at one end of the adjusting plate, after the adjusting plate is connected with the fixing plate, the first connecting plate is parallel to the second connecting plate and opposite to the second connecting plate, bolt holes are formed in the first connecting plate and the second connecting plate, the first connecting plate and the second connecting plate are connected through adjusting screws, and the adjusting plate and the fixing plate can slide relatively by rotating the adjusting screws, so that the purpose of adjustment is achieved.
The scheme is further improved, the first connecting plate is provided with a U-shaped groove, and the opening of the U-shaped groove faces upwards, so that the adjusting plate and the fixing plate can be conveniently disassembled and assembled.
The technical scheme is further improved, a support is connected above the adjusting plate, the positioning rods are vertically connected to two ends of the support, a lifting screw is connected to the support, and the lifting screw is used for fixing a lifting hook when the centering device of the round billet continuous casting machine crystallizer is lifted.
A method for centering a crystallizer of a round billet continuous casting machine comprises the following steps:
step one, determining an L value: the extending length of the thimble is adjusted through rotating the nut, so that the distance from the tip of the thimble to a reference surface on the first reference rod is L, the L value is the distance from the center line of the crystallizer of the round billet continuous casting machine to the outer cambered surface of the crystallizer of the round billet continuous casting machine, and the plane distance from the tip of the thimble to the center line of the positioning rods on two sides is L;
step two, placing a crystallizer centering device of a round billet continuous casting machine: then placing the round billet continuous casting machine crystallizer centering device at the upper port of the round billet continuous casting machine crystallizer, enabling a positioning pin hole at the upper port of the round billet continuous casting machine crystallizer to be communicated with the round through hole on the fixed plate and the waist-shaped through hole of the adjusting plate, and simultaneously inserting a positioning rod into the mounting shaft sleeve of the round billet continuous casting machine crystallizer;
locking a crystallizer centering device of the round billet continuous casting machine: inserting a pin into a positioning pin hole at the upper port of a round billet continuous casting machine crystallizer, and locking the position of a round billet continuous casting machine crystallizer centering device on the round billet continuous casting machine crystallizer;
fourth, adjusting centering: when the thimble touches the inner wall of the outer arc side of the round billet continuous casting machine crystallizer, the adjusting screw is adjusted to lock the installation shaft sleeve of the round billet continuous casting machine crystallizer, and the distance from the plane of the central line of the installation shaft sleeve of the round billet continuous casting machine crystallizer to the outer arc side surface of the round billet continuous casting machine crystallizer is L;
step five, removing the crystallizer centering device of the round billet continuous casting machine;
step six, mounting a round billet continuous casting machine crystallizer: and installing the adjusted round billet continuous casting machine crystallizer on a vibrating table, and sleeving the installation shaft sleeve on a positioning pin on the vibrating table.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) According to the centering device for the round billet continuous casting machine crystallizer, the distance between the back surfaces of the first reference rod and the second reference rod is L, L is the distance from the center line of the round billet continuous casting machine crystallizer to the outer cambered surface of the round billet continuous casting machine crystallizer, the second reference rod is tangent to the arc-shaped top end of the outer cambered surface of the round billet continuous casting machine crystallizer by moving the adjusting plate, so that the position of the positioning rod is determined, the positioning rod is equivalent to a positioning pin on the vibrating table, the position determination of the positioning rod is the central position determination of the installation shaft sleeve of the round billet continuous casting machine crystallizer, the installation shaft sleeve is locked again, and the off-line centering is completed.
(2) According to the crystallizer centering device of the round billet continuous casting machine, the second reference rod is connected with the ejector pin, the ejector pin is connected with the nut, and the distance from the tip of the ejector pin to the side surface of the first reference rod, which is far away from the second reference rod, can be adjusted by rotating the nut, so that the L values of the crystallizers of different round billet continuous casting machines can be met, the crystallizer centering device is suitable for the crystallizer devices of the round billet continuous casting machines with different specifications, and the application range is wider;
(3) According to the crystallizer centering device of the round billet continuous casting machine, the first reference rod is provided with the reference surface, the central line of the positioning rod is positioned on the reference surface, and the L value can be determined by determining the distance from the tip of the thimble to the reference surface, so that the determination of L is more accurate, visual and convenient;
(4) According to the crystallizer centering device of the round billet continuous casting machine, the fixing plate is connected below the adjusting plate, and the positioning of the crystallizer port of the round billet continuous casting machine can be realized through the fixing plate, so that the centering is faster and more convenient when the crystallizer port of the round billet continuous casting machine is used for centering under the line;
(5) According to the centering device for the round billet continuous casting machine crystallizer, one or two square through holes are formed in the fixing plate, and the adjusting plate can only slide along the length direction of the square through holes during centering, so that the tip of the thimble is directly aligned with the arc-shaped top end of the outer cambered surface of the round billet continuous casting machine crystallizer, the centering inaccuracy caused by the left and right movement of the centering device of the round billet continuous casting machine crystallizer is avoided, the centering process is faster, and the centering is accurate;
(6) According to the crystallizer centering device of the round billet continuous casting machine, the fixed plate and the adjusting plate are connected through the fixed screw, and as the holes on the adjusting plate matched with the fixed screw are waist-shaped through holes, the adjusting plate can move along the length direction of the waist-shaped through holes relative to the fixed plate, so that people can adjust the centering after the fixed plate and the adjusting plate are connected;
(7) The round billet continuous casting machine crystallizer centering device comprises the pin, the round billet continuous casting machine crystallizer centering device is locked at the pin hole position on the round billet continuous casting machine crystallizer by using the locating pin, and the round billet continuous casting machine crystallizer centering device is prevented from deviating relative to the round billet continuous casting machine crystallizer in the centering process, so that the centering can be realized quickly and more accurately;
(8) According to the crystallizer centering device of the round billet continuous casting machine, the first connecting plate is fixed at one end of the fixing plate, the second connecting plate is fixed at one end of the adjusting plate, the first connecting plate is connected with the second connecting plate through the adjusting screw, the tip of the thimble can be slowly and accurately adjusted relative to the outer cambered surface distance of the crystallizer of the round billet continuous casting machine by rotating the adjusting screw, and meanwhile the phenomenon that the thimble is damaged due to the fact that the adjusting plate is moved too fast in the adjusting process can be avoided;
(9) According to the crystallizer centering device of the round billet continuous casting machine, the U-shaped groove is formed in the first connecting plate, so that the crystallizer centering device is more convenient and quicker to disassemble and assemble;
(10) According to the crystallizer centering device of the round billet continuous casting machine, the support is arranged on the adjusting plate, and the positioning rod is connected to the support, so that the size of the adjusting plate can be relatively reduced, interference with other parts can be avoided on one hand, the coverage area is reduced on the other hand, and the adjustment is convenient;
(11) According to the crystallizer centering device of the round billet continuous casting machine, the lifting ring screw is fixed on the support, and is used for fixing the lifting hook when the crystallizer centering device of the round billet continuous casting machine is lifted, so that equipment such as a lifting machine is used for lifting and then is installed, manual carrying is avoided, time and labor are saved, and the crystallizer centering device is safe and reliable;
(12) The crystallizer centering device of the round billet continuous casting machine has the advantages of simple structure, convenient operation and low manufacturing cost.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic illustration in full section of the symmetrical midline position of the present invention;
FIG. 3 is a schematic view of the structure of the adjusting plate of the present invention;
FIG. 4 is another form of a schematic structural view of the adjusting plate of the present invention;
FIG. 5 is a schematic structural view of a fixing plate according to the present invention;
FIG. 6 is another form of a schematic structural view of the fixing plate of the present invention;
FIG. 7 is a schematic view in full section of the mold of the round billet caster of the present invention;
FIG. 8 is an enlarged view of a portion of the position A of FIG. 7;
FIG. 9 is a schematic diagram in full section of the right side view of the present invention mounted on a round billet caster mold;
FIG. 10 is an enlarged view of a portion of the B position of FIG. 9;
FIG. 11 is a schematic view in full section of a round billet caster mold;
FIG. 12 is an enlarged view of a portion of the position C of FIG. 11;
FIG. 13 is a schematic diagram in full section of a right side view on a round billet caster mold;
FIG. 14 is an enlarged view of a portion of the position D of FIG. 13;
FIG. 15 is a schematic view showing the cooperation of the mounting sleeve of the mold of the round billet caster with the positioning pin on the vibration table;
in the figure: 1. a crystallizer centering device of a round billet continuous casting machine; 3. a round billet continuous casting machine crystallizer; 4. a vibration table; 11. a fixing plate; 12. an adjustment plate; 13. a thimble; 14. a nut; 15. an adjusting screw; 16. a set screw; 17. a pin; 18. a positioning rod; 19. a first reference bar; 20. a second reference bar; 21. a bracket; 22. a suspension ring screw; 31. installing a shaft sleeve; 32. locking a screw; 33. a pin hole; 41. a positioning pin; 111. square through holes; 112. a first connecting plate; 113. a circular through hole; 121. a second connecting plate; 122. waist-shaped through holes.
Detailed Description
For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings.
Example 1
The centering device for the round billet continuous casting machine crystallizer in this embodiment, as shown in fig. 1 and 2, includes an adjusting plate 12, a first reference bar 19 and a second reference bar 20 are vertically connected to the adjusting plate 12, the first reference bar 19 and the second reference bar 20 are both located on a symmetrical middle line of the adjusting plate 12, so as to ensure that when the second reference bar 20 is centered, a side surface of the second reference bar 20 can be tangent to an arc top end of an outer arc surface of the round billet continuous casting machine crystallizer 3, a distance between the first reference bar 19 and a back surface of the second reference bar 20 is L, and the L is a distance from a center line of the round billet continuous casting machine crystallizer 3 to the outer arc top end of the round billet continuous casting machine crystallizer 3, namely, a distance from the center line of the round billet continuous casting machine crystallizer 3 to the arc top end of the outer arc surface, and for different round billet continuous casting machine crystallizers 3, L values are different, and generally, when the second reference bar 20 is tangent to the outer arc top end of the round billet continuous casting machine crystallizer 3, the center line of the round billet continuous casting machine 3 is just located on the side surface of the first reference bar 19; the two ends of the adjusting plate 12 are vertically connected with positioning rods 18, the positioning rods 18 are symmetrical along the symmetrical central line of the adjusting plate 12, the positioning rods 18 correspond to positioning pins 41 on the vibrating table 4 in the centering process of the round billet continuous casting machine crystallizer 3, are inserted into mounting shaft sleeves 31 of the round billet continuous casting machine crystallizer 3, the distance between the positioning rods 18 on two sides is 1570mm which is the same as the distance between the two positioning pins 41 on the vibrating table 4, so that the positioning rods 18 on two sides can be effectively inserted into the mounting shaft sleeves 31, the mounting shaft sleeves 31 on the round billet continuous casting machine crystallizer 3 after centering can be effectively matched with the positioning pins 41 on the vibrating table 4, and the positions and structures of the mounting shaft sleeves 31 are shown in fig. 13 and 14.
As shown in fig. 7, 9, 10 and 15, when the centering device 1 of the round billet caster is used for centering, the adjusting plate 12 is placed at the port of the round billet caster crystallizer 3, meanwhile, the positioning rod 18 is inserted into the mounting shaft sleeve 31 of the round billet caster crystallizer 3, then the centering device 1 of the round billet caster is adjusted, so that the side surface of the second reference rod 20 can be tangent to the arc-shaped top end of the outer cambered surface of the round billet caster crystallizer 3, as the positioning rod 18 corresponds to the positioning pin 41 on the vibrating table 4, the position of the positioning rod 18 is determined as the central position of the mounting shaft sleeve 31 of the round billet caster crystallizer 3, then the mounting shaft sleeve 31 is locked by adjusting the locking screw 32 on the mounting shaft sleeve 31, and then the round billet caster crystallizer centering device 1 of the embodiment is removed, thus the centering can be completed.
Example 2
The difference and improvement of the crystallizer centering device of the round billet continuous casting machine in this embodiment are that, as shown in fig. 2, the second reference rod 20 is connected with a thimble 13, the second reference rod 20 is radially provided with a hole, the thimble 13 is inserted into the hole, the thimble 13 is connected with a nut 14, and the thimble 13 and the nut 14 are connected through threads, and the protruding length of the tip of the thimble 13 can be increased or decreased by rotating the nut 14, so that the distance from the tip of the thimble 13 to the side surface of the first reference rod 19, away from the second reference rod 20, is adjusted, and the adjusting range of this embodiment is 318.5 mm-321.4 mm, so that the L values of the crystallizers 3 of different round billet continuous casting machines are met, so that the crystallizer centering device is suitable for round billet continuous casting machines 3 with different specifications.
Example 3
The centering device for the round billet continuous casting machine crystallizer in this embodiment is different from and improved in that, as shown in fig. 2, a reference surface is provided on the first reference rod 19, in this embodiment, the cutting depth of the reference surface is generally 5 mm-8 mm, and the cutting depth of the reference surface can be correspondingly adjusted according to the position of the first reference rod 19 on the adjusting plate 12, so as to ensure that the center line of the round billet continuous casting machine crystallizer 3 can fall on the reference surface after centering, thereby centering the round billet continuous casting machine crystallizer 3 is more accurate, the distance from the tip of the ejector pin 13 to the reference surface is L, the center line of the positioning rod 18 is coplanar with the center line of the round billet continuous casting machine crystallizer 3, and all the center lines are on the reference surface on the first reference rod 19, and the value of L can be determined by determining the distance from the tip of the ejector pin 13 to the reference surface, so that centering of the round billet continuous casting machine crystallizer 3 is more accurate, more visual and more convenient.
Example 4
The crystallizer centering device of the round billet continuous casting machine in this embodiment is different from and improved in that, as shown in fig. 1 and 2, a fixing plate 11 is connected below the adjusting plate 12, the fixing plate 11 is used for being fixed at a port of the round billet continuous casting machine crystallizer 3, and the adjusting plate 12 can slide on the fixing plate 11; as shown in fig. 6, a square through hole 111 is formed in the fixing plate 11, the square through hole 111 is located on a symmetrical middle line of the fixing plate 11, the first reference bar 19 and the second reference bar 20 pass through the square through hole 111, and the width of the square through hole 111 is the same as the width of the first reference bar 19 and the second reference bar 20 along the width direction of the square through hole 111, so as to ensure that the adjusting plate 12 can only slide relatively with the fixing plate 11 along the length direction of the square through hole 111, thereby ensuring that the tip end of the thimble 13 or the side surface of the second reference bar 20 is aligned with the arc-shaped top end of the outer arc surface of the round billet caster crystallizer 3, and avoiding misalignment caused by left-right movement of the round billet caster crystallizer centering device 1; the length of the square through hole 111 is 318-341 mm, so that the first reference rod 19 and the second reference rod 20 can be positioned within the length range of the square through hole 111 and further pass through the square through hole 111. Meanwhile, the positioning of the round billet continuous casting machine crystallizer centering device 1 at the port of the round billet continuous casting machine crystallizer 3 can be realized through the fixing plate 11, so that the centering process is quicker and more convenient.
Example 5
The crystallizer centering device for the round billet continuous casting machine in this embodiment is different from and improved in that, as shown in fig. 5, two square through holes 111 are provided on the fixing plate 11, the square through holes 111 are all located on the symmetrical middle line of the fixing plate 11, the first reference rod 19 and the second reference rod 20 respectively pass through the different square through holes 111, the widths of the square through holes 111 are the same as the widths of the first reference rod 19 and the second reference rod 20 along the width direction of the square through holes 111, so as to ensure that the adjusting plate 12 can only slide relatively with the fixing plate 11 along the length direction of the square through holes 111, thereby ensuring that the tip of the ejector pin 13 is directly aligned with the arc-shaped top end of the outer arc surface of the round billet continuous casting machine crystallizer 3, avoiding inaccurate centering caused by the left-right movement of the crystallizer centering device 1 for the round billet continuous casting machine, and ensuring that the centering process is faster and accurate; the lengths of the two square through holes 111 are respectively larger than the widths of the first reference bar 19 and the second reference bar 20 along the length direction of the square through holes 111, so as to ensure that the first reference bar 19 and the second reference bar 20 can respectively move in the two square through holes 111 along the length direction of the square through holes 111.
Example 6
The crystallizer centering device of the round billet continuous casting machine of the present embodiment is different from and improved in embodiment 3 or 4 in that: as shown in fig. 5 and 6, the fixing plate 11 is provided with a plurality of circular through holes 113, the circular through holes 113 are located on the symmetrical middle line of the fixing plate 11, and the circular through holes 113 are internal threaded holes for installing fixing screws 16 for connecting the fixing plate 11 and the adjusting plate 12 together; as shown in fig. 4, the adjusting plate 12 is provided with a waist-shaped through hole 122, the waist-shaped through hole 122 is located on the symmetry center line of the adjusting plate 12, and the length of the waist-shaped through hole 122 is long enough to ensure that the waist-shaped through hole 122 is communicated with all the circular through holes 113 on the fixing plate 11; as shown in fig. 1, the fixing plate 11 and the adjusting plate 12 are connected by a fixing screw 16 at the vertical communication position of the circular through hole 113 and the waist-shaped through hole 122, and the hole on the adjusting plate 12 is the waist-shaped through hole 122, and the movement of the adjusting plate 12 is not limited by the fixing screw 16 along the length direction of the waist-shaped through hole 122, so that the position of the adjusting plate 12 along the direction is adjustable; as shown in fig. 7 and 8, since the pin holes 33 on the port of the round billet caster mold 3 are located on the central section of the round billet caster mold 3, the round through holes 113 and the waist-shaped through holes 122 are respectively disposed on the symmetrical center lines of the fixed plate 11 and the adjusting plate 12, it is ensured that the round billet caster mold centering device 1 of the present embodiment is placed on the port of the round billet caster mold 3, the round through holes 113 and the waist-shaped through holes 122 which are communicated vertically communicate with the pin holes 33 on the port of the round billet caster mold 3, the distances between the two pin holes 33 are generally 482mm, 562mm, 630mm, 722mm, etc., and the distances between the two pin holes 33 of different round billet caster molds 3 are different, and the length of the waist-shaped through holes 122 is greater than 485mm, so that the adjusting plate 12 is not limited by the ends of the waist-shaped through holes 122 when moving along the symmetrical center lines with respect to the fixed plate 11.
The round billet continuous casting machine crystallizer centering device comprises a round billet continuous casting machine crystallizer 3, and is characterized by further comprising a pin 17, wherein the pin 17 is inserted into holes which are vertically communicated with the round through hole 113, the waist-shaped through hole 122 and the pin hole 33 at the port of the round billet continuous casting machine crystallizer 3, and is used for locking the position of the round billet continuous casting machine crystallizer centering device 1 on the round billet continuous casting machine crystallizer 3 so as to ensure that the round billet continuous casting machine crystallizer centering device 1 cannot move left and right or back and forth at the port of the round billet continuous casting machine crystallizer 3, and the position of the pin hole 33 on the round billet continuous casting machine crystallizer 3 is shown in figures 11 and 12; the number of the pins 17 is two, and the number of the pins is the same as that of the pin holes 33 at the port of the round billet caster crystallizer 3, so that the round billet caster crystallizer centering device 1 cannot rotate around a certain pin hole 33 at the port of the round billet caster crystallizer 3.
Example 7
The mold centering device for round billet continuous casting machine according to this embodiment is different from and improved from embodiment 6 in that, as shown in fig. 3, a plurality of waist-shaped through holes 122 are provided on the adjusting plate 12, the waist-shaped through holes 122 are located on the symmetry center line of the adjusting plate 12, at least three vertical through holes 113 on the fixing plate 11 are vertically communicated with the waist-shaped through holes 122, two pins 17 for inserting and locking are used for locking the mold centering device 1 for round billet continuous casting machine according to this embodiment on the mold 3 for round billet continuous casting machine, and at least one fixing screw 16 for installing the connecting of the adjusting plate 12 and the fixing plate 11 is used for the rest.
Example 8
The crystallizer centering device of the round billet caster of the present embodiment is different from and improved in embodiment 6 or 7 in that, as shown in fig. 1 to 6, one end of the fixing plate 11 is fixed with a first connecting plate 112, and the first connecting plate 112 is perpendicular to the fixing plate 11 and is located on the symmetry center line of the fixing plate 11; a second connecting plate 121 is fixed at one end of the adjusting plate 12, and the second connecting plate 121 is perpendicular to the adjusting plate 12 and is located on the symmetry center line of the adjusting plate 12; when the adjusting plate 12 is connected with the fixing plate 11, the first connecting plate 112 and the second connecting plate 121 are parallel and opposite, bolt holes are formed in the first connecting plate 112 and the second connecting plate 121, the bolt holes in the first connecting plate 112 are coincident with the axis of the bolt holes in the second connecting plate 121, the first connecting plate 112 and the second connecting plate 121 are connected through adjusting screws 15, the specification of the adjusting screws 15 is M16×55, the adjusting screws 15 are arranged in the bolt holes in the first connecting plate 112 and the second connecting plate 121, the adjusting plates 12 and the fixing plate 11 can slide relatively by rotating the adjusting screws 15, the axis direction of the adjusting screws 15 is consistent with the extending direction of the symmetrical center line of the fixing plate 11 and the adjusting plates 12, so that when the adjusting screws 15 are rotated, the adjusting plates 12 move along the symmetrical center line direction of the adjusting plates, the tip ends of the ejector pins 13 are tangential to the arc-shaped top ends of the outer arc-shaped surfaces of the round billet continuous casting machine crystallizer 3, the slow and accurate adjustment of the pitch of the outer arc-shaped surfaces of the ejector pins relative to the round billet continuous casting machine crystallizer can be realized, and meanwhile, the purpose of accurate adjustment of the centering of the ejector pins can be achieved, and damage caused by the adjustment process can be avoided when the adjusting and the moving of the adjusting plates is fast.
Example 9
The crystallizer centering device of the round billet continuous casting machine in this embodiment is different from and improved in that, as shown in fig. 1 and 5, a U-shaped groove is formed on the first connecting plate 112, and the opening of the U-shaped groove faces upwards. When the centering device 1 for the round billet caster crystallizer of the present embodiment is assembled, the adjusting plate 12 may be placed on the fixing plate 11 first, so that the first connecting plate 112 corresponds to the second connecting plate 121, and then the adjusting screw 15 is installed in the bolt holes on the first connecting plate 112 and the second connecting plate 121; the adjusting screw 15 may be first mounted on the second connecting plate 121 on the adjusting plate 12, and then the adjusting plate 12 is placed on the fixing plate 11, where the adjusting screw 15 is clamped in a U-shaped groove on the first connecting plate 112; the adjusting plate 12 can be directly removed from the fixing plate 11 during the disassembly without first removing the adjusting screw 15. The first connecting plate 112 is provided with a U-shaped groove, so that the crystallizer centering device 1 of the round billet continuous casting machine of the embodiment is more convenient and quick to assemble and disassemble.
Example 10
The crystallizer centering device for the round billet continuous casting machine in this embodiment is different from and improved in embodiment 9 in that, as shown in fig. 1, 2, 7 and 9, a bracket 21 is connected above the adjusting plate 12, the positioning rods 18 are vertically connected to two ends of the bracket 21, the bracket 21 is used for connecting the adjusting plate 12 and the positioning rods 18, it is understood that if the bracket 21 is not provided, the adjusting plate 12 needs to be large enough to ensure that the adjusting plate can cover the mounting shaft sleeve 31 of the round billet continuous casting machine crystallizer 3, and is easy to interfere with other parts at the port of the round billet continuous casting machine crystallizer 3, after the bracket 21 is added, the size of the adjusting plate 12 can be relatively reduced, so that interference with the other parts can be avoided, and on the other hand, the coverage area is reduced, thereby facilitating adjustment; the lifting ring screw 22 is connected to the support 21, and the lifting ring screw 22 is used for fixing a lifting hook when the round billet continuous casting machine crystallizer centering device 2 is lifted, so that equipment such as a lifting machine is used for lifting and then is installed, manual carrying is avoided, time and labor are saved, and the lifting ring screw is safe and reliable.
A method for centering a crystallizer of a round billet continuous casting machine comprises the following steps:
step one, determining an L value: as shown in fig. 2 and 7, the extending length of the thimble 13 is adjusted by rotating the nut 14, so that the distance from the tip of the thimble 13 to the reference surface on the first reference rod 19 is L, where L is the distance from the center line of the round billet caster crystallizer 3 to the outer arc surface of the round billet caster crystallizer 3, and at this time, the distance from the tip of the thimble to the plane where the center lines of the positioning rods on both sides are located is also L;
step two, placing a crystallizer centering device of a round billet continuous casting machine: as shown in fig. 7 and 9, the round billet caster crystallizer centering apparatus 1 is placed at the upper port of the round billet caster crystallizer 3 such that the positioning pin hole 33 at the upper port of the round billet caster crystallizer 3 is communicated with the round through hole 113 on the fixed plate 11 and the waist-shaped through hole 122 of the adjusting plate 12; as shown in fig. 9 and 10, the positioning rod 18 is inserted into the mounting shaft sleeve 31 of the round billet caster crystallizer 3;
locking a crystallizer centering device of the round billet continuous casting machine: as shown in fig. 7 and 8, a pin 17 is inserted into a positioning pin hole 33 at the upper port of the round billet caster crystallizer 3, and the position of the round billet caster crystallizer centering device 1 on the round billet caster crystallizer 3 is locked;
step four, adjusting the centering process: adjusting the adjusting screw 15 to enable the tip of the thimble 13 to touch the inner wall of the outer arc side of the round billet caster crystallizer 3; as shown in fig. 13 and 14, the mounting shaft sleeve 31 of the round billet caster crystallizer 3 is locked by the readjustment locking screw 32;
step five, removing the centering device 1 of the round billet continuous casting machine crystallizer, and completing off-line centering of the round billet continuous casting machine crystallizer 3;
step six, mounting a round billet continuous casting machine crystallizer: the adjusted round billet caster mold 3 is mounted on the oscillating table 4, and as shown in fig. 15, the mounting bush 31 is fitted over the positioning pin 41 on the oscillating table 4.
The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.
Claims (8)
1. A crystallizer centering device of a round billet continuous casting machine is characterized in that: the device comprises an adjusting plate (12), wherein a first reference rod (19) and a second reference rod (20) are vertically connected to the adjusting plate (12), the first reference rod (19) and the second reference rod (20) are both positioned on the symmetrical central line of the adjusting plate (12), two ends of the adjusting plate (12) are vertically connected with positioning rods (18), and the positioning rods (18) are symmetrical along the symmetrical central line of the adjusting plate (12); the distance between the back surfaces of the first reference rod (19) and the second reference rod (20) is equal to the distance between the central line of the round billet continuous casting machine crystallizer and the outer cambered surface of the round billet continuous casting machine crystallizer (3); the first reference rod (19) is provided with a reference surface, the central line of the positioning rod (18) is coplanar with the central line of the round billet continuous casting machine crystallizer (3), and the central lines are all arranged on the reference surface of the first reference rod (19); the device is characterized in that a fixing plate (11) is connected below the adjusting plate (12), one or two square through holes (111) are formed in the fixing plate (11), the square through holes (111) are located on the symmetrical middle line of the fixing plate (11), and the first reference rod (19) and the second reference rod (20) respectively penetrate through the square through holes (111).
2. The mold centering device of a round billet caster according to claim 1, wherein: the second reference rod (20) is connected with a thimble (13), and the thimble (13) is connected with a nut (14).
3. The round billet caster mold centering device of claim 2, wherein: a plurality of circular through holes (113) are formed in the fixed plate (11), the circular through holes (113) are positioned on the symmetrical middle line of the fixed plate (11), and the circular through holes (113) are internal threaded holes; one or more waist-shaped through holes (122) are formed in the adjusting plate (12), and the waist-shaped through holes (122) are positioned on the symmetrical middle line of the adjusting plate (12); at least three circular through holes (113) are vertically communicated with the waist-shaped through holes (122).
4. A round billet caster mold centering apparatus as claimed in claim 3, wherein: the device further comprises a pin (17), wherein the pin (17) is inserted into a hole which is vertically communicated with the circular through hole (113) and the waist-shaped through hole (122).
5. A round billet caster crystallizer alignment apparatus as in claim 3 or 4, wherein: one end of the fixing plate (11) is fixed with a first connecting plate (112), one end of the adjusting plate (12) is fixed with a second connecting plate (121), and the first connecting plate (112) and the second connecting plate (121) are connected through adjusting screws (15).
6. The mold centering device for round billet caster of claim 5, wherein: the first connecting plate (112) is provided with a U-shaped groove, and the opening of the U-shaped groove faces upwards.
7. The mold centering device for round billet caster of claim 6, wherein: the adjusting plate (12) top is connected with support (21), locating lever (18) are connected perpendicularly support (21) both ends, be connected with flying screw (22) on support (21).
8. A round billet caster crystallizer centering method using the round billet caster crystallizer centering apparatus of claim 7, comprising the steps of:
step one, determining an L value: the extending length of the thimble (13) is adjusted through the rotating nut (14), so that the distance from the tip of the thimble (13) to a reference surface on the first reference rod (19) is L, and the L is the distance from the central line of the round billet continuous casting machine crystallizer (3) to the extrados of the round billet continuous casting machine crystallizer (3);
step two, placing a crystallizer centering device of a round billet continuous casting machine: placing the round billet continuous casting machine crystallizer centering device (1) at the upper port of the round billet continuous casting machine crystallizer (3) so that a positioning pin hole (33) at the upper port of the round billet continuous casting machine crystallizer (3) is communicated with a round through hole (113) on the fixed plate (11) and a waist-shaped through hole (122) of the adjusting plate (12), and simultaneously inserting a positioning rod (18) into an installation shaft sleeve (31) of the round billet continuous casting machine crystallizer (3);
locking a crystallizer centering device of the round billet continuous casting machine: inserting a pin (17) into a positioning pin hole (33) at the upper port of the round billet continuous casting machine crystallizer (3), and locking the position of the round billet continuous casting machine crystallizer centering device (1) on the round billet continuous casting machine crystallizer (3);
step four, adjusting the centering process: an adjusting screw (15) is adjusted, and when the thimble (13) touches the inner wall of the outer arc side of the round billet continuous casting machine crystallizer (3), an adjusting locking screw (32) locks an installation shaft sleeve (31) of the round billet continuous casting machine crystallizer (3);
step five, removing the crystallizer centering device (1) of the round billet continuous casting machine;
step six, mounting a round billet continuous casting machine crystallizer: the regulated round billet continuous casting machine crystallizer (3) is arranged on a vibrating table (4), and the installation shaft sleeve (31) is sleeved on a positioning pin (41) on the vibrating table (4).
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| CN114178494B (en) * | 2020-09-15 | 2023-04-11 | 宝山钢铁股份有限公司 | Centering precision supplementing method based on continuous casting crystallizer centering automatic detection device |
| CN113231609B (en) * | 2021-04-16 | 2022-07-22 | 中国重型机械研究院股份公司 | Quick positioning method for square billet crystallizer |
| CN113600771B (en) * | 2021-07-30 | 2023-05-23 | 上海二十冶建设有限公司 | Off-line arc correction device for rectangular vertical continuous casting machine crystallizer and use method |
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