A caster narrow face foot roll mechanism with adjustable taper

Abstract

This invention provides a narrow-face foot roll mechanism for continuous casting machines with online adjustable taper, relating to the field of foot roll technology for continuous casting machines. The mechanism includes a fixed foot roll support, a foot roll frame rotatably mounted on the foot roll support, a foot roll assembly mounted on the foot roll frame, a pivot connector connecting the foot roll support and the foot roll frame, and a hydraulic drive unit connecting the foot roll support and the foot roll frame at both ends. The foot roll assembly includes a flat foot roll assembly and a drum-shaped roll assembly. A sliding bearing is provided on the foot roll support, and the hydraulic drive unit is a bidirectional hydraulic cylinder. During operation, the hydraulic drive unit drives the foot roll frame to rotate around the pivot connector, causing the foot roll assembly to move relative to the casting billet, thus achieving online taper adjustment. This mechanism can adjust the gap between the foot roll and the copper plate of the crystallizer in real time without stopping the machine, effectively adapting to changes in the casting billet width and compensating for foot roll wear, ensuring the continuity of continuous casting production and the quality of the casting billet. Furthermore, it features a simple and reliable structure, high adjustment accuracy, and convenient maintenance.

Description

Technical Field

[0001] This invention mainly relates to the field of continuous casting machine foot roll technology, specifically to a narrow-face foot roll mechanism for continuous casting machines with adjustable taper. Background Technology

[0002] In the continuous casting process, the foot roll is a key component of the secondary cooling zone of the continuous casting machine. Its main function is to support and guide the newly solidified billet, while also working in conjunction with the spray system for cooling. Traditional foot roll devices are usually installed in a fixed manner, and the gap between the foot roll and the copper plate of the crystallizer cannot be adjusted after the equipment is installed.

[0003] However, the following problems exist in actual production: Variation in billet width: When producing billets of different specifications, the billet width changes, resulting in a larger positive gap between the foot roller and the copper plate surface, which affects the surface quality and dimensional accuracy of the billet.

[0004] Foot roll wear: Foot rolls will wear out during long-term operation, especially the second and third row of drum-shaped foot rolls. After wear, a negative gap will form between the foot rolls and the copper plate surface, which will seriously affect the quality of the cast billet.

[0005] High downtime adjustment costs: Traditional equipment requires shutdown before gap adjustment can be performed, causing production interruption and increasing maintenance costs. Summary of the Invention

[0006] 1. The technical problem that the invention aims to solve: This invention provides a narrow-face foot roll mechanism for a continuous casting machine with adjustable taper, in order to solve the technical problems existing in the background art.

[0007] 2. Technical Solution: To achieve the above objectives, the technical solution provided by this invention is: a narrow-face foot roll mechanism for a continuous casting machine with adjustable taper, comprising: Fixed foot roller bracket; Foot roller frame, the foot roller frame being rotatably mounted on the foot roller bracket; A foot roller assembly, which is mounted on the foot roller frame, is used to support the narrow face of the cast billet; A pivot connector connects the foot roller bracket and the foot roller frame, forming a rotation axis for the foot roller frame to rotate relative to the foot roller bracket; A hydraulic drive component is provided, with one end connected to the foot roller bracket and the other end connected to the foot roller frame. The hydraulic drive component is telescopic to drive the foot roller frame to rotate around the rotation axis, thereby changing the position of the foot roller assembly relative to the casting billet and realizing online taper adjustment.

[0008] Furthermore, it also includes a spray pipe, which is fixed to the foot roller frame and is used to spray cooling medium onto the surface of the billet.

[0009] Furthermore, the foot roller bracket and the foot roller frame are rotatably connected by a sliding bearing. The sliding bearing is disposed on the foot roller bracket and sleeved on the outer periphery of the pivot connector to reduce rotational friction.

[0010] Furthermore, the hydraulic drive component is a bidirectional hydraulic cylinder, the piston rod end of which is hinged to the foot roller frame via a first pin, and the cylinder body end of which is hinged to the foot roller bracket via a second pin.

[0011] Furthermore, the foot roller assembly includes a flat foot roller assembly and a drum-shaped roller assembly, which are respectively fixedly installed at different positions of the foot roller frame and move synchronously with the foot roller frame when it rotates.

[0012] Furthermore, the pivot connector is a rotating shaft bolt, and the foot roller frame is rotatably connected to the sliding bearing through the rotating shaft bolt; an oil inlet channel is provided axially inside the rotating shaft bolt, and an oil outlet hole communicating with the inner wall of the sliding bearing is provided on the side wall at the bottom of the oil inlet channel, and a lubricating nozzle is installed at the outer port of the oil inlet channel.

[0013] Furthermore, the spray pipe fitting is provided with multiple spray joints, each of which is located on both sides of the foot roller assembly, and the nozzle of each spray joint faces the surface of the billet; one end of the spray pipe fitting is provided with an interface for connecting a cooling medium supply source.

[0014] Furthermore, it also includes a protective assembly, which includes two protective plates arranged opposite each other and a connecting plate connecting the two protective plates; the rear side of the foot roller frame is provided with a mounting boss, and the protective plates are fixedly installed on the mounting boss by fasteners; the hydraulic drive component and the hydraulic pipeline connected to the hydraulic drive component are both located inside the two protective plates, and the inner side of the protective assembly is also provided with a pipe clamp for the installation and fixing of the pipeline.

[0015] Furthermore, the taper adjustment range of the device is ±10mm, and the adjustment accuracy is 0.1mm.

[0016] Furthermore, the foot roller frame is provided with at least one lubricating oil nozzle, the nozzle of which faces the shaft ends of the flat foot roller assembly and the drum roller assembly respectively, for supplying lubricating oil to their bearing parts; the oil inlet end of the lubricating oil nozzle is connected to a lubricating oil passage.

[0017] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this invention has the following advantages: This invention features a rational design. By using a hydraulic drive to rotate the foot roller frame around a pivot connector, the gap between the foot roller and the copper plate of the crystallizer can be adjusted in real time without stopping the machine, effectively avoiding production interruptions and significantly reducing maintenance costs. This device can quickly adapt to changes in the width of cast billets of different specifications, automatically compensating for positive gap deviations caused by variations in billet width. Simultaneously, it can effectively compensate for wear caused by long-term operation of the foot roller, allowing the worn surface of the foot roller to re-adhere to the surface of the cast billet, extending the service life of the equipment.

[0018] The device uses a rotating shaft bolt as the pivot and a hydraulic cylinder as the drive source, resulting in a simple, reliable, and easy-to-maintain structure. Through precise control of the hydraulic system, coupled with the synchronous movement of the spray pipes with the foot roller frame, protective components isolating and protecting the hydraulic lines, and lubricating oil nozzles providing targeted lubrication to the foot roller bearings, the entire device ensures long-term stable operation and micron-level high-precision adjustment capabilities under the harsh conditions of continuous casting.

[0019] It should be noted that the structures not described in this invention are not related to the design points and improvement directions of this invention, and are the same as or can be implemented using existing technologies, so they will not be elaborated here. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure during installation of the present invention; Figure 2 This is a schematic diagram of the negative clearance adjustment state after the foot roller wears according to the present invention; Figure 3 This is a schematic diagram of the positive gap adjustment state when the billet width changes according to the present invention; Figure 4 This is a schematic diagram of the zero-position state of the present invention; Figure 5 This is a side view of the protective plate being removed according to the present invention; Figure 6 This is a cross-sectional structural diagram of the present invention; Figure 7 This is a schematic diagram of the axial structure of the present invention; Figure 8 This is a top view of the present invention.

[0021] Figure label: 1. Foot roller bracket; 11. Sliding bearing; 2. Foot roller frame; 21. Lubricating oil nozzle; 22. Lubricating oil passage; 3. Foot roller assembly; 4. Pivot connector; 41. Rotary shaft bolt; 42. Oil inlet channel; 43. Lubricating oil nozzle; 5. Hydraulic drive component; 51. First pin; 52. Second pin; 6. Spray pipe fitting; 61. Spray connector; 7. Protective component; 71. Protective plate; 72. Connecting plate; 73. Mounting boss; 74. Pipe clamp. Detailed Implementation

[0022] To facilitate understanding of the present invention, a more complete description of the invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the invention will be more thorough and complete.

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] It should be noted that structures not described in this invention do not involve the design points and improvement directions of this invention, and can all be achieved using existing technologies known to those skilled in the art.

[0027] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0028] See attached document Figure 1-8 The present invention provides an online cone adjustment device for narrow-faced foot roller spraying, which mainly includes a fixed foot roller bracket 1, a foot roller frame 2 rotatably mounted on the foot roller bracket 1, a foot roller assembly 3 mounted on the foot roller frame 2, a spray pipe 6 fixed on the foot roller frame 2, a pivot connector 4 connecting the foot roller bracket 1 and the foot roller frame 2, and a hydraulic drive 5 for driving the foot roller frame 2 to rotate around the pivot connector 4.

[0029] The foot roll support 1 adopts a fixed structure and is bolted to the continuous casting machine frame, serving as the mounting base for the entire device. The foot roll support 1 is preferably made of Q355B steel to ensure sufficient structural strength and rigidity to withstand the billet support reaction force and impact load transmitted by the foot roll assembly 3 during continuous casting. The foot roll frame 2 is also preferably made of Q355B steel and is rotatably mounted on the foot roll support 1 via a pivot connector 4, serving to support the foot roll assembly 3. The foot roll frame 2 adopts a frame structure, ensuring overall rigidity while providing ample assembly space for the foot roll assembly 3 and the spray pipe fittings 6.

[0030] The pivot connector 4 connects the foot roller bracket 1 and the foot roller frame 2, forming the rotation axis of the foot roller frame 2 relative to the foot roller bracket 1. In a preferred embodiment, the pivot connector 4 is a pivot bolt 41, through which the foot roller frame 2 is hinged to the foot roller bracket 1. The pivot bolt 41 is preferably made of 42CrMo alloy steel, which has high strength and excellent wear resistance, enabling it to withstand the shear and bending stresses generated during the rotation of the foot roller frame 2 for a long period, ensuring the service life of the pivot connection. In this embodiment, two pivot bolts 41 are used, respectively located on both sides of the foot roller frame 2, to ensure the smooth rotation and uniform stress distribution of the foot roller frame 2.

[0031] A sliding bearing 11 is provided between the foot roller bracket 1 and the foot roller frame 2. The sliding bearing 11 is fixedly installed on the foot roller bracket 1 to reduce the frictional resistance when the foot roller frame 2 rotates relative to the foot roller bracket 1. The sliding bearing 11 is preferably made of bronze, which has good self-lubricating and wear-resistant properties. It can effectively reduce the coefficient of friction between the rotating shaft bolt 41 and the foot roller frame 2, ensuring that the foot roller frame 2 rotates smoothly under the push of the hydraulic drive component 5, thereby improving the sensitivity and accuracy of the taper adjustment.

[0032] To facilitate the supply of lubricating grease to the friction surface between the sliding bearing 11 and the pivot bolt 41, an axial oil inlet channel 42 is provided inside the pivot bolt 41, and a lubricating nozzle 43 is installed at the outer end of the oil inlet channel 42. An oil outlet hole is provided on the side wall of the pivot bolt 41, connecting to the inner wall of the sliding bearing 11. In actual use, the operator injects lubricating grease into the oil inlet channel 42 through the lubricating nozzle 43. The lubricating grease flows through the oil inlet channel 42 to the oil outlet hole, and then seeps out from the oil outlet hole to the friction contact surface between the sliding bearing 11 and the pivot bolt 41, achieving effective lubrication of both, further reducing rotational wear and extending the service life of the pivot connector 4.

[0033] The foot roll assembly 3 is mounted on the foot roll frame 2 to support the narrow face of the cast billet. In this embodiment, the foot roll assembly 3 includes a flat foot roll assembly and a drum-shaped roll assembly. The flat foot roll assembly and the drum-shaped roll assembly are fixedly mounted to different positions on the foot roll frame 2 by bolts and move synchronously with the foot roll frame 2 when it rotates. Preferably, there is one set of flat foot roll assemblies and two sets of drum-shaped roll assemblies. The flat foot roll assembly and the drum-shaped roll assembly together constitute a complete foot roll support system, providing multi-point support to the narrow face of the cast billet from different positions, ensuring uniform stress on the narrow face of the cast billet during continuous casting and preventing surface defects. The flat foot roll assembly and the drum-shaped roll assembly rotate synchronously with the foot roll frame 2, ensuring that the relative positions between the foot rolls remain unchanged during taper adjustment, thus ensuring the overall coordination and consistency of the foot roll system.

[0034] One end of the hydraulic drive component 5 is connected to the foot roller bracket 1, and the other end is connected to the foot roller frame 2. The hydraulic drive component 5 is telescopic, driving the foot roller frame 2 to rotate around the rotation axis, i.e., the rotating shaft bolt 41, thereby changing the position of the foot roller assembly 3 relative to the casting billet and realizing online adjustment of the taper. Preferably, the hydraulic drive component 5 is a hydraulic cylinder with a brake block. This hydraulic cylinder is a bidirectional hydraulic cylinder with bidirectional telescopic function. The cylinder body end of the hydraulic cylinder is hinged to the foot roller bracket 1 through the first pin 51, and the piston rod end of the hydraulic cylinder is hinged to the foot roller frame 2 through the second pin 52. The pin hinge method can adaptively compensate for the angle change caused by the rotation of the foot roller frame 2 during the extension and retraction of the hydraulic cylinder, avoid the hydraulic cylinder bearing lateral force, and ensure that the hydraulic cylinder outputs driving force only along its axial direction, thereby extending the service life of the hydraulic cylinder and improving the driving efficiency.

[0035] like Figure 4 As shown, when the device is in the zero position, the foot roller is flush with the copper plate surface of the crystallizer. At this time, the foot roller assembly 3 maintains a normal contact gap with the narrow surface of the billet. The billet moves steadily downward under the support and guidance of the foot roller. At the same time, the spray pipe 6 sprays cooling water onto the surface of the billet for secondary cooling.

[0036] like Figure 3As shown, when the production of billets of different specifications causes changes in billet width, the positive gap between the foot roller and the copper plate surface increases. At this time, the operator adjusts the direction and quantity of hydraulic oil supply to the hydraulic cylinder via the control system, controlling the piston rod of the hydraulic cylinder to retract and push the foot roller frame 2 to rotate clockwise around the pivot bolt 41, thereby reducing the positive gap between the foot roller and the crystallizer copper plate and restoring the effective support of the foot roller for the narrow surface of the billet. Through this adjustment method, changes in billet width can be quickly adapted to without stopping the machine, ensuring the surface quality and dimensional accuracy of the billet.

[0037] like Figure 2 As shown, when the foot rollers wear down after long-term operation, especially after the second and third rows of drum rollers wear down, a negative gap forms between the foot rollers and the copper plate surface. At this time, the operator also controls the piston rod of the hydraulic cylinder to extend through the control system, pushing the foot roller frame 2 to rotate counterclockwise around the rotating shaft bolt 41 to compensate for the dimensional loss caused by the wear of the foot rollers. This allows the worn surface of the foot rollers to re-fit against the surface of the cast billet, restoring the effective support and guiding function of the foot rollers for the cast billet, and avoiding casting quality problems caused by the negative gap.

[0038] Throughout the adjustment process, the flat foot roll assembly and the drum roll assembly move synchronously with the foot roll frame 2, and the relative positions between each foot roll remain constant, ensuring the integrity and coordination of the foot roll system. Precise taper adjustment can be achieved by controlling the stroke of the hydraulic cylinder. The taper adjustment range of this device can be designed according to actual needs, generally adjustable within ±10mm, with an adjustment accuracy of up to 0.1mm, fully meeting the process requirements of continuous casting production.

[0039] This device is also equipped with a spray pipe 6, which is fixed to the foot roller frame 2 and is used to spray a cooling medium, such as cooling water, onto the surface of the cast billet. Since the spray pipe 6 is fixed to the foot roller frame 2, when the hydraulic drive 5 drives the foot roller frame 2 to rotate, the spray pipe 6 moves synchronously with the foot roller frame 2, so that the spray pipe 6 and the foot roller assembly 3 always maintain a fixed relative position. This ensures that during the taper adjustment process, the spraying direction of the spray pipe 6 is always aligned with the surface of the cast billet and will not be offset or interfered with by the rotation of the foot roller frame 2, thereby ensuring the uniformity and effectiveness of secondary cooling.

[0040] The spray pipe fitting 6 is preferably made of multiple sections of stainless steel pipe connected by joints. As a preferred embodiment, the spray pipe fitting 6 is made of 0Cr18Ni9 stainless steel, which has good corrosion resistance and can withstand the erosion of high-temperature water vapor and iron oxide scale environment during continuous casting for a long time. The spray pipe fitting 6 is provided with multiple spray joints 61, each located on both sides of the foot roller assembly 3, with the nozzles of each spray joint 61 facing the surface of the cast billet to form uniform spray cooling of the narrow surface of the cast billet. One end of the spray pipe fitting 6 is provided with an interface for connecting to the cooling medium supply source, preferably connected to an external cooling water system via a high-pressure angle hydraulic joint, ensuring the sealing and reliability of the cooling medium supply.

[0041] To prevent the hydraulic drive component 5 and its connecting pipelines from being impacted by external objects or directly impacted by high-temperature spray water during operation, this device is also equipped with a protective assembly 7. The protective assembly 7 includes two opposing protective plates 71 and a connecting plate 72 connecting the two protective plates 71. A mounting boss 73 is provided on the rear side of the foot roller frame 2, and the protective plates 71 are fixedly mounted to the mounting boss 73 using fasteners such as bolts. The hydraulic drive component 5, i.e., the hydraulic cylinder, and the hydraulic pipelines connecting to the hydraulic drive component 5 are all located between the two protective plates 71, which provide physical isolation and protection from both sides. The protective plates 71 and the connecting plate 72 are preferably made of 0Cr18Ni9 stainless steel, which has good corrosion resistance and can withstand the high-temperature radiation and scouring of the continuous casting area, effectively extending the service life of the hydraulic pipelines and control components.

[0042] To further optimize the fixing and protection of hydraulic pipelines, the protective component 7 is preferably equipped with a pipe clamp 74. The pipe clamp 74 is used to fix the hydraulic hose and prevent the hose from shaking due to vibration or friction damage with other components during equipment operation, thus ensuring the stability and safety of the hydraulic system oil supply.

[0043] To ensure adequate lubrication of all rotating parts of the foot roller assembly 3 and extend the service life of the foot roller, this device also includes at least one lubricating oil nozzle 21 on the foot roller frame 2. The nozzles of the lubricating oil nozzle 21 are directed towards the shaft ends of the flat foot roller assembly and the drum roller assembly, supplying lubricating oil to the bearings inside. The oil inlet of the lubricating oil nozzle 21 is connected to a lubricating oil passage 22, which is connected to an external lubrication supply system. During operation, the lubrication supply system delivers lubricating oil to each lubricating oil nozzle 21 through the lubricating oil passage 22. After being sprayed from the nozzles, the lubricating oil accurately reaches the bearings of the flat foot roller assembly and the drum roller assembly, achieving continuous and reliable lubrication of the rotating parts of the foot roller, effectively reducing wear on the foot roller bearings, and extending the maintenance cycle and service life of the foot roller assembly 3.

[0044] In summary, the narrow-face foot roller spray online cone adjustment device provided by the present invention drives the foot roller frame 2 to rotate around the pivot connector 4 through the hydraulic drive component 5, realizing online adjustment of the foot roller cone without stopping the machine, effectively solving the gap mismatch problem caused by changes in billet width and foot roller wear; at the same time, through a series of coordinated designs such as the synchronous movement of the spray pipe component 6 with the foot roller frame 2, the isolation and protection of the hydraulic pipeline by the protective component 7, and the fixed-point lubrication of the foot roller bearing by the lubricating oil nozzle 21, the long-term stable operation and high-precision adjustment capability of the entire device under the harsh conditions of continuous casting are guaranteed.

[0045] The above-described embodiments are merely illustrative of certain implementations of the present invention, and are described in a relatively specific and detailed manner. However, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A narrow-face foot roller mechanism for a continuous casting machine with adjustable taper, characterized in that: include: Fixed foot roller bracket (1); Foot roller frame (2), which is rotatably mounted on the foot roller bracket (1); Foot roller assembly (3), which is mounted on the foot roller frame (2) and is used to support the narrow face of the billet; A pivot connector (4) connects the foot roller bracket (1) and the foot roller frame (2), forming a rotation axis for the foot roller frame (2) to rotate relative to the foot roller bracket (1); A hydraulic drive component (5) is connected at one end to the foot roller bracket (1) and at the other end to the foot roller frame (2). The hydraulic drive component (5) is telescopic to drive the foot roller frame (2) to rotate around the rotation axis, thereby changing the position of the foot roller assembly (3) relative to the billet and realizing online taper adjustment.

2. The narrow-face foot roller mechanism for a continuous casting machine with adjustable taper according to claim 1, characterized in that: It also includes a spray pipe (6), which is fixed to the foot roller frame (2) and is used to spray cooling medium onto the surface of the billet.

3. The narrow-face foot roller mechanism for a continuous casting machine with adjustable taper according to claim 1, characterized in that: The foot roller bracket (1) and the foot roller frame (2) are rotatably connected by a sliding bearing (11). The sliding bearing (11) is disposed on the foot roller bracket (1) and is sleeved on the outer periphery of the pivot connector (4) to reduce rotational friction.

4. The narrow-face foot roller mechanism for a continuous casting machine with adjustable taper according to claim 1, characterized in that: The hydraulic drive component (5) is a two-way hydraulic cylinder. The piston rod end of the two-way hydraulic cylinder is hinged to the foot roller frame (2) through a first pin (51), and the cylinder body end of the two-way hydraulic cylinder is hinged to the foot roller bracket (1) through a second pin (52).

5. The narrow-face foot roller mechanism for a continuous casting machine with adjustable taper according to claim 1, characterized in that: The foot roller assembly (3) includes a flat foot roller assembly and a drum-shaped roller assembly. The flat foot roller assembly and the drum-shaped roller assembly are respectively fixedly installed at different positions of the foot roller frame (2) and move synchronously with the foot roller frame (2) when it rotates.

6. The narrow-face foot roller mechanism for a continuous casting machine with adjustable taper according to claim 3, characterized in that: The pivot connector (4) is a rotating bolt (41), and the foot roller frame (2) is rotatably connected to the sliding bearing (11) through the rotating bolt (41). An oil inlet channel (42) is provided axially inside the rotating bolt (41), and an oil outlet hole is provided on the side wall at the bottom of the oil inlet channel (42) to the inner wall of the sliding bearing (11). A lubricating nozzle (43) is installed at the outer port of the oil inlet channel (42).

7. A narrow-face foot roller mechanism for a continuous casting machine with adjustable taper according to claim 2, characterized in that: The spray pipe fitting (6) is provided with a plurality of spray joints (61), each of the spray joints (61) being located on both sides of the foot roller assembly (3), and the nozzles of each spray joint (61) facing the surface of the billet; one end of the spray pipe fitting (6) is provided with an interface for connecting a cooling medium supply source.

8. The narrow-face foot roller mechanism for a continuous casting machine with adjustable taper according to claim 1, characterized in that: It also includes a protective component (7), which includes two protective plates (71) arranged opposite to each other and a connecting plate (72) connecting the two protective plates (71); the rear side of the foot roller frame (2) is provided with a mounting boss (73), and the protective plate (71) is fixedly installed on the mounting boss (73) by fasteners; the hydraulic drive (5) and the hydraulic pipeline connected to the hydraulic drive (5) are both located inside the two protective plates (71), and the inner side of the protective component (7) is also provided with a pipe clamp (74) for the installation and fixing of the pipeline.

9. A narrow-face foot roller mechanism for a continuous casting machine with adjustable taper according to claim 1, characterized in that: The taper adjustment range of the device is ±10mm, and the adjustment accuracy is 0.1mm.

10. A narrow-face foot roller mechanism for a continuous casting machine with adjustable taper according to claim 5, characterized in that: The foot roller frame (2) is provided with at least one lubricating oil nozzle (21), the nozzle of the lubricating oil nozzle (21) is respectively facing the shaft end of the flat foot roller assembly and the drum roller assembly, and is used to supply lubricating oil to their bearing parts; the oil inlet end of the lubricating oil nozzle (21) is connected to a lubricating oil passage (22).

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