CN116274913A - Seven quick-witted seven stream casting machines of high drawing speed - Google Patents

Abstract

The invention discloses a seven-machine seven-strand casting machine with high pulling speed, and relates to the technical field of continuous casting machines. The seven-machine seven-stream casting machine with the high pulling speed comprises a support, a protection frame is arranged at the top of the support, a driving roller is movably mounted on the inner side of the protection frame, a heat insulation cylinder is fixedly mounted on the outer side of the driving roller, an adjusting seat is fixedly mounted on the top of the protection frame, an anti-deflection adjusting component is arranged on the inner side of the adjusting seat, and the anti-deflection adjusting component is mainly used for guiding a billet formed by a continuous casting machine to prevent deflection in the transportation process. This seven quick-witted seven casting machines of high drawing speed is through adjusting the flexible length of telescopic link and then adjust the distance between two sets of movable frames, wherein set up the sleeve and mainly play spacing and driven effect, the telescopic link outside has cup jointed the positioning nut, mainly used fixes a position the telescopic link to carry out spacing to the steel billet and prevent that the steel billet from appearing the skew when carrying, thereby guaranteed the steady transport of steel billet.

Description

Seven quick-witted seven stream casting machines of high drawing speed

Technical Field

The invention relates to the technical field of continuous casting machines, in particular to a seven-machine seven-strand casting machine with high drawing speed.

Background

The continuous casting is an intermediate link for connecting steel smelting and steel rolling, namely an excessive link for converting materials from liquid state to solid state in the steel product processing process, molten steel is poured into a ladle after smelting by a converter and refining equipment, the ladle is placed on a ladle turret, double-station operation of the ladle turret is ensured, the production continuity is ensured, molten steel in the ladle is injected into a tundish through a sliding water gap mechanism, slow cooling optimization is carried out in the tundish, then the molten steel is guided into a slab continuous casting crystallizer through the water gap mechanism, the molten steel is initially solidified in the crystallizer to form a blank shell with a certain thickness by utilizing the forced cooling effect in the crystallizer and uninterrupted regular vibration of a vibrating table, the casting blank is gradually pulled out of the crystallizer at a certain speed along with the continuous casting and the withdrawal and straightening of a withdrawal straightening machine, the casting blank is continuously cooled until a casting blank with a regular shape is formed, and in order to improve the forming of the casting blank, a plurality of groups of continuous casting machines are combined and cast to form a multi-machine continuous casting machine.

However, when steel billet continues to be carried when cast steel, steel billet is easy to deviate from the conveying track in the conveying process, the existing conveying track is relatively inconvenient to adjust, the friction force with steel billet is relatively large, the steel billet with different sizes is inconvenient to adjust in a limiting mode, meanwhile, when steel billet is transported, the existing steel billet conveying roller way is easy to cause heat transfer due to the fact that steel billet has relatively high temperature, and then lubricating oil at the joint of the rotating shafts of the conveying rollers is easy to evaporate and relatively high in loss, abrasion between the conveying rollers and the rotating shafts is relatively high, portable rapid lubrication cannot be achieved, the existing conveying rollers are inconvenient to maintain lubrication, relatively high manpower and material resources are required to be consumed, and accordingly the casting efficiency of the steel billet is affected.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the invention provides a seven-machine seven-strand casting machine with high pulling speed, which solves the problems that the traditional conveying roller does not have the adjusting and limiting effects and is easy to cause the deviation of billets in the conveying process.

(II) technical scheme

In order to achieve the above purpose, the invention is realized by the following technical scheme: the seven-strand casting machine with the high pulling speed comprises a support, wherein a protection frame is arranged at the top of the support, a driving roller is movably arranged at the inner side of the protection frame, a heat insulation cylinder is fixedly arranged at the outer side of the driving roller, an adjusting seat is fixedly arranged at the top of the protection frame, an anti-deflection adjusting assembly is arranged at the inner side of the adjusting seat and is mainly used for guiding a billet formed by a continuous casting machine to prevent deflection in the transportation process;

one end of drive roller is provided with the conveying subassembly, conveying subassembly mainly used provides the lubricant for the lubrication of drive roller, the other end fixed mounting of drive roller has the drive shaft, the outside fixed mounting of drive shaft has the gear, the inner wall of drive roller is provided with lubrication subassembly, lubrication subassembly mainly used lubricates the drive roller and guarantees the steady operation of drive roller.

Further, the anti-deflection adjusting component comprises a telescopic rod, a movable frame and a sleeve shaft, wherein the telescopic rod is movably arranged on the inner wall of the adjusting seat, the movable frame is fixedly arranged at one end of the telescopic rod, and the sleeve shaft is fixedly arranged at the top of the movable frame.

Further, the anti-deflection adjusting assembly further comprises a guide roller and a rotating shaft, wherein the rotating shaft is movably arranged on the inner wall of the sleeve shaft, and the rotating shaft is fixedly arranged on the outer side of the rotating shaft.

Further, the conveying assembly comprises a protective sleeve, an inserting shaft, a supporting column and an oil inlet pipe, wherein the protective sleeve is fixedly arranged at one end of the driving roller, the inserting shaft is inserted into the inner wall of the driving roller, the supporting column is fixedly arranged at one end of the inserting shaft, and the oil inlet pipe is fixedly arranged at one end of the supporting column.

Further, the conveying assembly further comprises an oil outlet, an oil guiding cavity and a sealing gasket, wherein the oil outlet is formed in one end of the inserting shaft, the oil guiding cavity is formed in the inner side wall of the oil outlet, and the sealing gasket is fixedly arranged on the inner side wall of the oil guiding cavity.

Further, the conveying assembly further comprises an arc-shaped groove, a lubricating shaft and a positioning shaft, wherein the arc-shaped groove is formed in the inner side wall of the oil guiding cavity, the positioning shaft is fixedly arranged on the inner wall of the arc-shaped groove, and the lubricating shaft is movably arranged on the outer side of the positioning shaft.

Further, the size of the sealing gasket is matched with the size of the oil guiding cavity, the sealing gasket is made of rubber materials, a through hole is formed in the surface of the sealing gasket, and the initial state of the through hole is in a sealing state.

Further, the lubrication assembly comprises an inner sleeve, a movable cavity, a guide rod and a movable block I, wherein the inner sleeve is fixedly arranged on the inner side wall of the driving roller, the inner sleeve is fixedly arranged on the outer side of the positioning shaft, the movable block I is movably arranged on the outer side of the guide rod, and the movable cavity is formed in the middle of the inner sleeve.

Further, the lubrication assembly further comprises a spring rod and a movable block II, wherein the spring rod is fixedly arranged on the inner side wall of the driving roller, and the movable block II is movably arranged on the outer side of the movable block I.

Further, the lubrication assembly further comprises a lubrication piece, the lubrication piece is fixedly arranged at the bottom of the second movable block, the bottom of the lubrication piece is arc-shaped, a round angle is formed in the side edge of the bottom of the lubrication piece, and the bottom of the lubrication piece is mutually attached to the conveying assembly.

(III) beneficial effects

The invention has the following beneficial effects:

1. this seven quick-witted seven casting machines of high drawing speed is through adjusting the flexible length of telescopic link and then adjust the distance between two sets of movable frames, wherein set up the sleeve and mainly play spacing and driven effect, the telescopic link outside has cup jointed the positioning nut, mainly used fixes a position the telescopic link to carry out spacing to the steel billet and prevent that the steel billet from appearing the skew when carrying, thereby guaranteed the steady transport of steel billet.

2. This seven quick-witted seven continuous casting machines of high drawing speed through the lubricant that infuses into oil feed pipe, and the lubricant passes through the support column and inserts the axle and gets into the inner wall of oil guide chamber through the oil-out, along with the inside more and more of lubricant of pouring into of oil guide chamber, the through-hole of seting up in the sealed pad outside no longer hinders the lubricant this moment to spray the surface to the lubricated axle through the through-hole, thereby reach quick portable's effect of filling up the lubricant, improved maintenance efficiency.

3. The seven-machine seven-stream casting machine with high pulling speed is mainly used for lubricating the inner side walls of the inserting shaft, the lubricating shaft and the driving roller by arranging the lubricating piece, wherein the lubricating agent on the surface of the lubricating shaft is uniformly adhered to the inner side of the lubricating piece when the lubricating piece is in contact with the lubricating shaft and coated on the surface of the inserting shaft, so that the lubricating effect is realized.

Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic side view of a bracket structure of the present invention;

FIG. 3 is a schematic view of the adjusting seat of the present invention;

FIG. 4 is a schematic view of the structure of the heat insulation cylinder of the invention;

FIG. 5 is a schematic view of a driving roller structure according to the present invention;

FIG. 6 is a schematic view of a structure of an insert shaft according to the present invention;

FIG. 7 is a schematic cross-sectional view of a drive roller according to the present invention;

FIG. 8 is an enlarged schematic view of the partial structure of portion A of FIG. 7 in accordance with the present invention;

fig. 9 is a schematic view of the structure of the driving shaft of the present invention.

In the figure, 1, a bracket; 2. a protective frame; 3. a driving roller; 4. a heat insulation cylinder; 5. an adjusting seat; 6. a telescopic rod; 7. a movable frame; 8. a sleeve shaft; 9. a guide roller; 10. a rotating shaft; 11. a protective sleeve; 12. inserting a shaft; 13. a support column; 14. an oil inlet pipe; 15. an oil outlet; 16. a movable cavity; 17. an oil guiding cavity; 18. a sealing gasket; 19. an arc-shaped groove; 20. a lubrication shaft; 21. positioning a shaft; 22. an inner sleeve; 23. a lubrication sheet; 24. a guide rod; 25. a movable block I; 26. a spring rod; 27. a second movable block; 28. a drive shaft; 29. a gear.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "open," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like indicate orientation or positional relationships, merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Referring to fig. 1-9, the embodiment of the present invention provides a technical solution: the seven-machine seven-stream casting machine with high pulling speed comprises a support 1, wherein a protection frame 2 is arranged at the top of the support 1, a driving roller 3 is movably arranged at the inner side of the protection frame 2, a heat insulation cylinder 4 is fixedly arranged at the outer side of the driving roller 3, the heat insulation cylinder 4 is mainly made of ceramic materials with lower heat conduction efficiency, an adjusting seat 5 is fixedly arranged at the top of the protection frame 2, an anti-deflection adjusting component is arranged at the inner side of the adjusting seat 5 and is mainly used for guiding billets formed by a continuous casting machine to prevent deflection in the transportation process;

one end of the driving roller 3 is provided with a conveying component, the conveying component is mainly used for providing lubricant for lubrication of the driving roller 3, the other end of the driving roller 3 is fixedly provided with a driving shaft 28, the outer side of the driving shaft 28 is fixedly provided with a gear 29, the inner wall of the driving roller 3 is provided with a lubrication component, and the lubrication component is mainly used for lubricating the driving roller 3 to ensure stable operation of the driving roller 3.

Specifically, prevent that the adjustment subassembly that inclines includes telescopic link 6, movable frame 7, sleeve 8, telescopic link 6 movable mounting is at the inner wall of adjusting seat 5, and movable frame 7 fixed mounting is in the one end of telescopic link 6, and sleeve 8 fixed mounting is at the top of movable frame 7.

In this embodiment, the distance between two sets of movable frames 7 is then adjusted through adjusting the flexible length of telescopic link 6, wherein set up sleeve shaft 8 and mainly play spacing and driven effect, wherein the telescopic hole with telescopic link 6 adaptation has been seted up in the outside of adjusting seat 5, and wherein the locating nut has been cup jointed in telescopic link 6 outside, mainly used fixes a position telescopic link 6.

Specifically, prevent that the adjustment subassembly that inclines still includes deflector roll 9, pivot 10 movable mounting is in the inner wall of sleeve 8, and pivot 10 fixed mounting is in the outside of pivot 10.

In this embodiment, the rotating shaft 10 is mainly used to cooperate with the sleeve shaft 8 to rotate the guide roller 9 under the driving of the billet, and limit the billet to prevent the billet from shifting during conveying.

Specifically, the conveying assembly comprises a protective sleeve 11, an inserting shaft 12, a supporting column 13 and an oil inlet pipe 14, wherein the protective sleeve 11 is fixedly arranged at one end of the driving roller 3, the inserting shaft 12 is inserted into the inner wall of the driving roller 3, the supporting column 13 is fixedly arranged at one end of the inserting shaft 12, and the oil inlet pipe 14 is fixedly arranged at one end of the supporting column 13.

In this embodiment, mainly play the effect of protecting drive roller 3 through setting up lag 11, prevent that external dust from getting into the inner wall of drive roller 3 and causing the lubricating oil caking of drive roller 3 inner wall to influence the normal operating of drive roller 3, mainly play the effect of supporting drive roller 3 through setting up cartridge 12 and support column 13, wherein the outside of support column 13 and the inboard fixed connection of protection frame 2, the external lubricant conveyer pipe of oil feed pipe 14 carries the lubricant to support column 13 and cartridge 12 through the conveyer pipe, and then reaches lubricated effect.

Specifically, the conveying assembly further comprises an oil outlet 15, an oil guiding cavity 17 and a sealing gasket 18, wherein the oil outlet 15 is formed in one end of the insertion shaft 12, the oil guiding cavity 17 is formed in the inner side wall of the oil outlet 15, and the sealing gasket 18 is fixedly arranged on the inner side wall of the oil guiding cavity 17.

In this embodiment, the lubricant passing through the support column 13 and the insertion shaft 12 is discharged through the oil outlet 15 into the inner wall of the drive roller 3, and the lubricant inside the oil outlet 15 enters the inner wall of the insertion shaft 12 through the oil guiding chamber 17 under the action of pressure.

Specifically, the conveying assembly further comprises an arc-shaped groove 19, a lubricating shaft 20 and a positioning shaft 21, wherein the arc-shaped groove 19 is formed in the inner side wall of the oil guiding cavity 17, the positioning shaft 21 is fixedly mounted on the inner wall of the arc-shaped groove 19, and the lubricating shaft 20 is movably mounted on the outer side of the positioning shaft 21.

In this embodiment, the arc groove 19 is mainly used to limit the lubrication shaft 20, and the lubrication shaft 20 rotates along the outer side of the positioning shaft 21, so that the driving roller 3 can rotate stably.

Specifically, the size of the sealing gasket 18 is matched with the size of the oil guiding cavity 17, the sealing gasket 18 is made of rubber materials, a through hole is formed in the surface of the sealing gasket 18, and the initial state of the through hole is in a sealing state.

In this embodiment, the sealing pad 18 is mainly used for intercepting the lubricant, and as the lubricant injected into the oil guiding cavity 17 increases, the through hole formed on the outer side of the sealing pad 18 does not obstruct the lubricant any more, and the lubricant is sprayed to the surface of the lubrication shaft 20 through the through hole.

Specifically, the lubrication assembly comprises an inner sleeve 22, a movable cavity 16, a guide rod 24 and a movable block I25, wherein the inner sleeve 22 is fixedly arranged on the inner side wall of the driving roller 3, the inner sleeve 22 is fixedly arranged on the outer side of the positioning shaft 21, the movable block I25 is movably arranged on the outer side of the guide rod 24, and the movable cavity 16 is formed in the middle of the inner sleeve 22.

In this embodiment, the inner sleeve 22 is mainly used for limiting and protecting the insertion shaft 12, wherein the outer surface of the inner sleeve 22 is provided with a through hole, and the guide rod 24 mainly has the effect of supporting and moving the first movable block 25.

Specifically, the lubrication assembly further comprises a spring rod 26 and a movable block II 27, wherein the spring rod 26 is fixedly arranged on the inner side wall of the driving roller 3, and the movable block II 27 is movably arranged on the outer side of the movable block I25.

In this embodiment, by providing the spring rod 26 mainly for traction and resetting of the second movable block 27, when the second movable block 27 moves along the outer side of the first movable block 25, the spring rod 26 will be stretched and store a certain amount of elasticity to perform traction, stretching and resetting on the second movable block 27.

Specifically, lubrication assembly still includes lubrication piece 23, and lubrication piece 23 fixed mounting is in the bottom of movable block two 27, and lubrication piece 23's bottom is circular-arc, and the fillet has been seted up to lubrication piece 23's bottom side, and lubrication piece 23 bottom and conveying assembly laminating each other.

In this embodiment, the lubrication piece 23 is mainly used to lubricate the inner side walls of the insert shaft 12, the lubrication shaft 20 and the driving roller 3, wherein the lubricant on the surface of the lubrication shaft 20 is uniformly adhered to the inner side of the lubrication piece 23 and coated on the surface of the insert shaft 12 when the lubrication piece 23 contacts with the lubrication shaft 20, so as to achieve the lubrication effect, and the lubrication shaft 20 drives the movable block two 27 and the movable block one 25 to perform upward expansion movement when the lubrication piece 23 is pressed, so that the inner side of the lubrication piece 23 is always contacted with the insert shaft 12 and the lubrication shaft 20.

When in use, billets cast and formed by seven machines seven-strand continuous casting machine are transported through the surface of the heat insulation cylinder 4, wherein a driving shaft 28 fixedly arranged at one end of a driving roller 3 is fixedly connected with a driving motor, so as to drive the driving roller 3 to rotate, a transmission chain is sleeved outside a gear 29 at the outer side of the driving roller 3, every two adjacent gears 29 are connected through the transmission chain, in order to prevent the billets in the conveying process from shifting, the distance between two groups of opposite guide rollers 9 is regulated by regulating the telescopic length of a telescopic rod 6, when the billets are in contact with the surface of the guide rollers 9 in the conveying process, the guide rollers 9 can drive a rotating shaft 10 to rotate along the inner wall of a sleeve shaft 8, so as to intercept the conveyed billets, prevent the billets from shifting in the conveying process, and along with the running of the driving roller 3, the heat insulation cylinder 4 can block heat transfer of the billet, but at the moment, the lubricant coated on the contact surface of the insert shaft 12 and the driving roller 3 at the joint of the driving roller 3 and the insert shaft 12 is gradually worn along with rotating wear, the friction force between the insert shaft 12 and the driving roller 3 is increased along with the wear of the lubricant, so that the movement of the driving roller 3 is blocked, at the moment, the lubricant is infused into the inner wall of the oil guide cavity 17 through the oil outlet 15 through the support column 13 and the insert shaft 12 along with the lubricant passing through the support column 13 and the insert shaft 12, the lubricant is infused into the inner wall of the oil guide cavity 17 along with the increasing amount of the lubricant, at the moment, the opened through hole on the outer side of the sealing pad 18 does not block the lubricant any more and is sprayed to the surface of the lubricating shaft 20 through the through hole, as the outer sides of the lubricating shaft 20 and the insert shaft 12 are contacted with the inner walls of the lubricating piece 23 and the inner sleeve 22, and the inner sleeve 22 rotates along the outer side of the insert shaft 12, the lubricant on the surface of the lubrication shaft 20 is uniformly adhered to the inner side of the lubrication piece 23 and coated on the surface of the insertion shaft 12, so that the lubrication effect is achieved, wherein the lubrication shaft 20 drives the movable block two 27 and the movable block one 25 to perform upward expansion movement when the lubrication piece 23 is extruded, and the inner side of the lubrication piece 23 is always contacted with the insertion shaft 12 and the lubrication shaft 20, so that the insertion shaft 12 and the inner wall of the driving roller 3 are fully lubricated.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims (10)

1. Seven quick-witted seven casting machines of high drawing speed, including support (1), its characterized in that: the steel billet continuous casting machine is characterized in that a protection frame (2) is arranged at the top of the support (1), a driving roller (3) is movably arranged at the inner side of the protection frame (2), a heat insulation cylinder (4) is fixedly arranged at the outer side of the driving roller (3), an adjusting seat (5) is fixedly arranged at the top of the protection frame (2), an anti-deflection adjusting component is arranged at the inner side of the adjusting seat (5), and the anti-deflection adjusting component is mainly used for guiding a steel billet formed by the continuous casting machine to prevent deflection in the transportation process;

one end of drive roller (3) is provided with conveying component, conveying component mainly used provides the lubricant for the lubrication of drive roller (3), the other end fixed mounting of drive roller (3) has drive shaft (28), the outside fixed mounting of drive shaft (28) has gear (29), the inner wall of drive roller (3) is provided with lubricating component, lubricating component mainly used lubricates drive roller (3) and guarantees the steady operation of drive roller (3).

2. A high draw speed seven-machine seven-strand casting machine according to claim 1, wherein: the anti-deflection adjusting assembly comprises a telescopic rod (6), a movable frame (7) and a sleeve shaft (8), wherein the telescopic rod (6) is movably installed on the inner wall of the adjusting seat (5), the movable frame (7) is fixedly installed at one end of the telescopic rod (6), and the sleeve shaft (8) is fixedly installed at the top of the movable frame (7).

3. A high draw speed seven-machine seven-strand casting machine according to claim 2, wherein: the anti-deflection adjusting assembly further comprises a guide roller (9) and a rotating shaft (10), wherein the rotating shaft (10) is movably mounted on the inner wall of the sleeve shaft (8), and the rotating shaft (10) is fixedly mounted on the outer side of the rotating shaft (10).

4. A high draw speed seven-machine seven-strand casting machine according to claim 1, wherein: the conveying assembly comprises a protective sleeve (11), an inserting shaft (12), a supporting column (13) and an oil inlet pipe (14), wherein the protective sleeve (11) is fixedly installed at one end of the driving roller (3), the inserting shaft (12) is inserted into the inner wall of the driving roller (3), the supporting column (13) is fixedly installed at one end of the inserting shaft (12), and the oil inlet pipe (14) is fixedly installed at one end of the supporting column (13).

5. A high draw speed seven-machine seven-strand casting machine according to claim 4, wherein: the conveying assembly further comprises an oil outlet (15), an oil guiding cavity (17) and a sealing gasket (18), wherein the oil outlet (15) is formed in one end of the inserting shaft (12), the oil guiding cavity (17) is formed in the inner side wall of the oil outlet (15), and the sealing gasket (18) is fixedly arranged on the inner side wall of the oil guiding cavity (17).

6. A high draw speed seven-machine seven-strand casting machine according to claim 5, wherein: the conveying assembly further comprises an arc-shaped groove (19), a lubricating shaft (20) and a positioning shaft (21), wherein the arc-shaped groove (19) is formed in the inner side wall of the oil guiding cavity (17), the positioning shaft (21) is fixedly mounted on the inner wall of the arc-shaped groove (19), and the lubricating shaft (20) is movably mounted on the outer side of the positioning shaft (21).

7. A high draw speed seven-machine seven-strand casting machine according to claim 5, wherein: the size of the sealing gasket (18) is matched with the size of the oil guiding cavity (17), the sealing gasket (18) is made of rubber materials, a through hole is formed in the surface of the sealing gasket (18), and the initial state of the through hole is in a sealing state.

8. A high draw speed seven-machine seven-strand casting machine according to claim 1, wherein: the lubrication assembly comprises an inner sleeve (22), a movable cavity (16), a guide rod (24) and a movable block I (25), wherein the inner sleeve (22) is fixedly arranged on the inner side wall of the driving roller (3), the inner sleeve (22) is fixedly arranged on the outer side of the positioning shaft (21), the movable block I (25) is movably arranged on the outer side of the guide rod (24), and the movable cavity (16) is formed in the middle of the inner sleeve (22).

9. A high draw speed seven-machine seven-strand casting machine according to claim 8, wherein: the lubrication assembly further comprises a spring rod (26) and a movable block II (27), wherein the spring rod (26) is fixedly arranged on the inner side wall of the driving roller (3), and the movable block II (27) is movably arranged on the outer side of the movable block I (25).

10. A high draw speed seven-machine seven-strand casting machine according to claim 9, wherein: the lubricating assembly further comprises a lubricating piece (23), the lubricating piece (23) is fixedly arranged at the bottom of the movable block II (27), the bottom of the lubricating piece (23) is arc-shaped, round corners are formed in the side edges of the bottom of the lubricating piece (23), and the bottom of the lubricating piece (23) is mutually attached to the conveying assembly.

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