Driving device with rolling guiding function

Abstract

The utility model relates to the technical field of ferrous metallurgy equipment, in particular to a driving device with a rolling guide function, which comprises a box body provided with a driving component. The guide rod assembly is arranged on the outer surface of the box body; the guide rod assembly comprises a guide rail surface which is an inclined conical working surface; the roller assembly comprises a fixed end which is connected with the external frame; a conical roller is arranged at the rolling end, and the rim contour of the conical roller is matched with the conical working surface to form surface contact; when the driving component drives the box body to linearly move, the conical roller rolls along the conical guide rail surface, stress is decomposed into radial and axial component forces, uniform stress distribution is realized, and the driving device is ensured to stably reciprocate up and down, so that the stopper rod is driven to realize accurate lifting control, and the service life of the stopper rod is prolonged. The problems that molten steel flows disorderly before solidification due to molten steel liquid level fluctuation caused by vibration of the stopper rod, and center porosity and a V-shaped segregation zone are formed by a casting blank are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of steel metallurgical equipment technology, and in particular to a drive device with rolling guidance. Background Technology

[0002] In continuous casting, precise control of the stopper rod in the tundish is directly related to the stable regulation of molten steel flow. If the stopper rod vibrates, it will cause fluctuations in the molten steel level, seriously affecting the quality of the cast billet.

[0003] Currently, most common stopper rod drive devices employ a structure of guide rod and flat roller, controlling the raising and lowering of the stopper rod electrically or manually. However, this traditional structure suffers from limited contact area: the line contact between the flat roller and the guide rod leads to localized stress concentration; and severe vibration transmission: when the drive device (usually heavy) moves up and down, the flat roller directly transmits mechanical vibration to the stopper rod end, causing stopper rod vibration. This vibration causes fluctuations in the molten steel surface, which in turn disrupts the flow of molten steel at the solidification front, resulting in central porosity and V-shaped segregation bands in the cast billet, thus affecting the production quality of the cast billet.

[0004] Therefore, there is an urgent need for a drive device with rolling guidance to enable the stopper rod drive device to move up and down while avoiding stopper rod vibration, so as to ensure the accuracy of the stopper rod in regulating the molten steel flow. Utility Model Content

[0005] This invention proposes a drive device with rolling guidance to solve the problem in the prior art where the use of a line contact structure between a planar roller and a guide rod results in a small contact area, significant vibration transmission, and vibration of the stopper rod causing fluctuations in the molten steel surface, thus affecting the quality of the cast billet.

[0006] In a first aspect, a drive device with rolling guidance for driving the lifting and lowering of stopper bars in a continuous casting machine includes a housing with a drive component; a guide rod assembly disposed on the outer surface of the housing; the guide rod assembly includes a guide rail surface, the guide rail surface being an inclined conical working surface; and a roller assembly including: a fixed end connected to an external frame; and a rolling end provided with a conical roller, the rim profile of which matches the conical working surface to form surface contact.

[0007] Furthermore, the guide rail surface is a tapered working surface with an inclination angle of 130° to 160°.

[0008] Furthermore, the roller assembly includes a roller seat and a roller shaft; wherein, the two ends of the roller seat are detachably connected to bearing caps, and the roller seat and the two bearing caps together form an assembly area; the roller shaft is arranged laterally in the assembly area, and its two ends are pivotally connected to one of the bearing caps, and the tapered roller is sleeved on the outer side of the roller shaft.

[0009] Furthermore, the tapered roller is sleeved on the outer periphery of the roller shaft to form a central cavity between the tapered roller and the roller shaft; a tapered roller bearing is also sleeved on the outer periphery of the roller shaft, the tapered roller bearing is located in the central cavity and its outer surface abuts against the inner surface of the tapered roller.

[0010] Furthermore, the roller assembly includes a bushing; the bushing is fitted onto the roller shaft and one side abuts against the tapered roller bearing, while the other side abuts against the bearing cap.

[0011] Furthermore, the outer diameter of the bushing is provided with a groove, and a sealing ring is installed in the groove.

[0012] Furthermore, one side of the bearing cover is provided with an oil cup; the roller shaft is provided with an axially arranged oil passage that extends from the end of the roller shaft to the central cavity; the oil cup is connected to the oil passage through a channel on the bearing cover.

[0013] Furthermore, the box body is provided with guide rail surfaces on both sides; each guide rail surface is equipped with a roller assembly.

[0014] Furthermore, the driving component includes a manually driven rocker arm assembly and an automatically driven electric cylinder; the rocker arm assembly includes a handle and a gear disk; the guide rod assembly includes a rack, which is fixedly connected to the housing; the gear disk meshes with the rack; when the housing is manually driven to move linearly reciprocating, the gear disk reciprocates along the rack.

[0015] Furthermore, the top of the electric cylinder is connected to an upper support, and the bottom of the electric cylinder is connected to a lower support; the guide rod assembly includes a first telescopic frame and a second telescopic frame; wherein, the second telescopic frame is integrally connected to the housing; the upper support is connected to the first telescopic frame, and the lower support is connected to the inner bottom of the housing; when the electric cylinder is driven, the upper support reciprocates in the vertical direction, causing the first telescopic frame to extend and retract relative to the second telescopic frame.

[0016] The technical solutions provided in this application have the following advantages compared with the prior art:

[0017] This invention provides a drive device with rolling guidance. An inclined conical guide surface is provided on the outer surface of the housing, forming a matching conical contact with the conical rollers of the roller assembly. When the drive component moves the housing in a straight line, the conical rollers roll along the conical guide surface, decomposing the stress into radial and axial components, achieving uniform stress distribution. This surface contact structure not only effectively solves the problem of stress concentration and vibration caused by traditional line contact, but also significantly improves the stress bearing capacity by increasing the contact area. This ensures that the drive device performs smooth up-and-down reciprocating motion, thereby driving the stopper rod to achieve precise lifting and lowering control. It effectively avoids the problem of molten steel flow disturbance at the solidification front caused by stopper rod vibration, which leads to problems such as central porosity and V-shaped segregation bands in the cast billet. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0021] Figure 1 A schematic diagram of the combined structure of the stopper rod, container, and drive device;

[0022] Figure 2 This is an exploded schematic diagram of the driving device of this application;

[0023] Figure 3 A cross-sectional structural schematic diagram of the drive device of this application;

[0024] Figure 4 This is a schematic diagram of the assembly structure of the roller assembly and the guide rail surface in this application;

[0025] Figure 5 This is a cross-sectional view of the roller assembly of this application;

[0026] Figure 6 This is a structural schematic diagram of the assembly area of ​​the roller assembly in this application;

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Drive unit; 11. Housing; 111. Top; 112. Hollow interior; 113. Bottom; 114. Side; 12. Drive component; 121. Electric cylinder; 1211. Upper support; 1212. Lower support; 122. Rocker arm assembly; 1221. Rocker arm; 1222. Gear disk; 13. Guide rod assembly; 131. First telescopic frame; 132. Second telescopic frame; 133. Guide rail surface; 134. Rack; 14. Roller assembly; 141. Conical roller; 142. Roller Shaft; 1421, Oil passage; 143, Bearing cover; 1431, Channel; 144, Roller seat; 145, Tapered roller bearing; 146, Sealing ring; 147, Bushing; 1471, Ring groove; 148, Oil cup; 149, Buffer pad; 15, Locking assembly; 151, Copper block; 152, Cross handle; 16, Assembly area; 17, Central cavity; 18, Tilt angle; 19, Adjusting shim; 2, Crossbeam support; 3, Intermediate plate; 4, Long nozzle; 5, Crystallizer; 6, Stopper rod. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0031] In order to solve the problem in the existing technology that the line contact structure between the flat roller and the guide rod results in a small contact area and obvious vibration transmission, which causes the stopper rod to vibrate and cause fluctuations in the molten steel surface.

[0032] like Figure 1 As shown, the inventors provide a rolling guide drive device 1 for driving the stopper rod 6 in a continuous casting machine to rise and fall. The rolling guide drive device 1 (hereinafter referred to as drive device 1) includes a housing 11, which is provided with a drive member 12; and a guide rod assembly 13, which is disposed on the outer surface of the housing 11.

[0033] like Figure 2 and Figure 3 As shown, the housing 11 has a cuboid-like structure, and its interior is hollow 112. The drive component 12 includes a manually driven rocker arm assembly 122 and an automatically driven electric cylinder 121. The rocker arm assembly 122 is bolted to the outside of the housing 11, and the electric cylinder 121 is vertically mounted in the hollow interior 112 of the housing 11.

[0034] The top 111 of the housing 11 has a crossbeam support 2, which is bolted to a stopper rod 6. The stopper rod 6 is placed in a container filled with molten steel. One side 114 of the housing 11 is bolted to the container filled with molten steel via an intermediate plate 3. When the stopper rod 6 is driven, it moves up and down to force the molten steel from the long nozzle 4 of the container into the crystallizer 5.

[0035] During the up-and-down movement of stopper rod 6, its vibration can cause fluctuations in the molten steel, thus affecting the quality of the cast steel. Therefore, to achieve the up-and-down movement of stopper rod 6 while avoiding fluctuations in the molten steel surface during this process, the stability of stopper rod 6 during movement is crucial.

[0036] To ensure smooth up-and-down movement of the stopper rod 6, the up-and-down movement of the housing 11 must also be smooth. There are two ways to achieve this: one is by using a manually driven rocker arm assembly 122, and the other is by using an automatically driven electric cylinder 121.

[0037] In detail, the guide rod assembly 13 includes a first telescopic frame 131 and a second telescopic frame 132 that are slidably connected. The first telescopic frame 131 is located above the second telescopic frame 132. The top of the electric cylinder 121 is connected to the first telescopic frame 131 by a screw thread through an upper support 1211, and the bottom of the electric cylinder 121 is fixed to the bottom 113 of the housing 11 by a lower support 1212; wherein the first telescopic frame 131 is connected to the crossbeam bracket 2, and the second telescopic frame 132 is rigidly connected to the housing 11.

[0038] When the electric cylinder 121 operates, the lead screw in the electric cylinder 121 moves linearly to push the upper support 1211 to reciprocate vertically relative to the fixed lower support 1212, thereby driving the first telescopic frame 131 to extend and retract axially within the second telescopic frame 132. This axial extension and retraction motion is transmitted to the stopper rod 6 through the crossbeam bracket 2, and is ultimately converted into the lifting and lowering motion of the stopper rod 6. This technical solution, through the mechanical coupling of the electric cylinder 121 and the multi-stage telescopic frame, ensures both the linearity of power transmission and effectively suppresses radial sway during the movement through the guiding effect of the telescopic frame.

[0039] It should also be noted that, such as Figure 2As shown, the rocker arm assembly 122 includes a rocker arm 1221 and a gear disk 1222; the guide rod assembly 13 includes a rack 134, which is fixedly connected to the housing 11; the gear disk 1222 is meshed with the rack 134; when the housing 11 is manually driven to move linearly back and forth, the gear disk 1222 moves back and forth along the rack 134.

[0040] In manual drive mode, the operator moves the rocker arm 1221 up and down, causing the gear disk 1222 to rotate up and down. Since the gear disk 1222 is engaged with the rack 134 fixed to the housing 11, the reciprocating rotation of the gear and rack 134 is converted into linear motion, thereby driving the entire housing 11 to move precisely in a straight line along the guide rod direction, achieving the lifting and lowering control of the stopper rod 6. This gear and rack 134 transmission mechanism ensures transmission efficiency during manual operation and, through its self-locking characteristic, ensures position holding capability when stopped, providing a reliable backup control scheme in case of electric drive failure.

[0041] In addition, in order to keep the housing 11 in a predetermined position, such as Figure 2 As shown, the housing 11 is also equipped with a locking assembly 15, which includes a copper block 151 and a cross handle 152. The copper block 151 abuts against the surface of the rack 134, the rack 134 having a serrated surface to increase the contact friction with the copper block 151. The cross handle 152 and the rack 134 are connected by a threaded connection.

[0042] When locking is required, the operator rotates the cross handle 152, pushing the copper block 151 tightly against the serrated surface of the rack 134. The flexibility of the copper material and the special texture of the serrated surface generate significant static friction, thus firmly locking the rack 134 in the meshing position with the gear disc 1222, ensuring that the stopper rod 6 can be stably held in the set position. When unlocking is required, rotating the cross handle 152 in the opposite direction easily releases the braking force, restoring the vertical adjustability of the housing 11.

[0043] In addition, in order to solve the problem that the vibration generated by the box 11 during the up and down movement is transmitted to the stopper rod 6 and causes the stopper rod 6 to vibrate, the vibration of the stopper rod 6 will cause the molten steel surface to fluctuate, resulting in the molten steel flow at the solidification front disorder, causing the billet to form a central porosity and V-shaped segregation zone.

[0044] Detailed, such as Figure 2 , Figure 4As shown, the guide rod assembly 13 includes a guide rail surface 133, which is an inclined conical working surface; the roller assembly 14 includes: a fixed end connected to the external frame; and a rolling end provided with a conical roller 141, the rim profile of which matches the conical working surface to form a surface contact; when the driving member 12 drives the housing 11 to move linearly, the conical roller 141 rolls along the conical working surface, dispersing vibration stress through surface contact.

[0045] In detail, when the drive mechanism moves the housing 11 in a linear motion, the conical roller 141 rolls smoothly along the conical guide surface 133, cleverly decomposing the concentrated stress generated by traditional line contact into radial and axial components. This conical surface contact design significantly increases the effective contact area, making the stress distribution more uniform. Based on the force decomposition mechanism, it not only solves the problem of stress concentration but also effectively suppresses vibration transmission, greatly improving motion stability. In practical applications, this structure ensures that the stopper rod 6 achieves precise and stable lifting and lowering motion, fundamentally avoiding the problem of molten steel surface fluctuations caused by the vibration of the stopper rod 6.

[0046] In one embodiment of this utility model, such as Figure 5 As shown, the guide rail surface 133 has a conical working surface with an inclination angle 18 between 130° and 160°.

[0047] It should be understood that when the conical roller 141 rolls on the guide surface 133 with an inclination angle 18 of 130° to 160°, the contact force between the conical roller 141 and the conical guide surface 133 is decomposed into radial support force and axial positioning force. In a specific embodiment, the inclination angle of the conical roller 141 is 130°. This angle range ensures the optimal proportional distribution of the two component forces to form a stable surface contact, thereby achieving a uniform distribution of contact force. Simultaneously, the increased contact area reduces the stress per unit area. Tests have proven that the conical roller 141 and the conical guide surface 133 of this technical solution improve the axial movement from the original 0.05mm to within 0.02mm, effectively avoiding the problem of molten steel surface fluctuation caused by vibration of the stopper rod 6 during the lifting and lowering process of the drive device 1. It should be understood that the inclination angle of the conical roller 141 is not limited to 130°, and may include 135°, 140°, etc., depending on actual usage requirements.

[0048] In one embodiment of this utility model, it is also as follows: Figure 2 As shown, guide rail surfaces 133 are provided on both sides of the housing 11; each guide rail surface 133 is equipped with a roller assembly 14.

[0049] It should be understood that guide rail surfaces 133 are symmetrically arranged on both sides of the housing 11, and each guide rail surface 133 is equipped with a set of roller assemblies 14. When the housing 11 is driven by an external force, the roller assemblies 14 on both sides roll synchronously, ensuring that the housing 11 moves vertically up and down within the guide area formed by the roller assemblies 14, effectively suppressing radial sway; at the same time, the symmetrical layout makes the force on both sides of the housing 11 uniform, preventing it from axially deviating.

[0050] In addition, depending on the actual working conditions, the guide rail surface 133 and the roller assembly 14 can be flexibly configured into multiple structural forms such as four or six sets to further improve the stability and guiding accuracy of the box 11 moving up and down.

[0051] Furthermore, such as Figure 2 As shown, to adapt to different assembly space requirements, especially when the distance between the external support and the molten steel container is large, a matching adjusting shim 19 is added between the guide rail surface 133 and the roller assembly 14. This adjusting shim 19 adopts a tapered working surface design consistent with the guide rail surface 133 and is quickly installed and removed via a bolt assembly. When the distance between the external support and the container is large, installing the adjusting shim 19 can effectively expand the radial support position of the roller assembly 14, ensuring that the housing 11 can still obtain stable rolling guidance within a large space range; conversely, when the space distance is small, the adjusting shim 19 can be removed to restore the original assembly state. This modular adjustment design eliminates the need to move the large molten steel container, significantly improving the ability of the drive unit 1 to meet different assembly space requirements.

[0052] In one embodiment of this utility model, such as Figures 4 to 6 As shown, the roller assembly 14 includes a roller seat 144 and a roller shaft 142; wherein, the two ends of the roller seat 144 are detachably connected to bearing caps 143, and the roller seat 144 and the two bearing caps 143 together form an assembly area 16; the roller shaft 142 is arranged laterally in the assembly area 16, and its two ends are pivotally connected to a bearing cap 143, and a tapered roller 141 is sleeved on the outer side of the roller shaft 142.

[0053] In this embodiment, the bearing cover 143 is fixedly connected to the roller seat 144 by bolts. The tapered roller 141 and the roller shaft 142 are constrained in the assembly area 16 to prevent the tapered roller 141 from detaching from the rolling track during rolling.

[0054] In detail, when the drive component 12 drives the housing 11 to move linearly, in the roller assembly 14, the detachable bearing caps 143 at both ends of the roller seat 144 and the roller seat 144 form an assembly area 16. The laterally arranged roller shaft 142 is pivotally connected to the bearing caps 143 at both ends, and a conical roller 141 is sleeved on the outside, with the rim profile of the conical roller 141 matching the conical working surface. At this time, under the driving force generated by the movement of the housing 11, the conical roller 141 rolls along the conical working surface, dispersing stress through surface contact. Compared with traditional flat rollers, the conical surface contact of this technical solution increases the stress contact area while reducing local stress concentration.

[0055] In addition, the bearing cover 143 positions the roller shaft 142 to prevent it from moving axially, ensuring the precise alignment of the tapered roller 141 with the guide rail surface 133, and ultimately enabling the stopper rod 6 to move steadily up and down.

[0056] In another embodiment, the connection between the roller seat 144 and the external support has a buffer pad 149, which is made of an elastic material. When the drive device 1 moves up and down under the drive action, causing the roller assembly 14 to roll along the tapered guide surface 133, the buffer pad 149 can absorb the vibration generated at the connection between the roller seat 144 and the external support, so as to ensure that the roller assembly 14 rolls smoothly along the tapered guide surface 133.

[0057] Furthermore, a tapered roller 141 is fitted around the outer periphery of the roller shaft 142 to form a central cavity 17 between the tapered roller 141 and the roller shaft 142; a tapered roller bearing 145 is also fitted around the outer periphery of the roller shaft 142, the tapered roller bearing 145 is located in the central cavity 17 and its outer surface abuts against the inner surface of the tapered roller 141.

[0058] When the driving component 12 moves the housing 11, the driving force of the housing 11 is transmitted to the conical working surface of the guide rod assembly 13, and the matching conical roller 141 rolls along the conical working surface under the action of this force. At this time, the conical roller 141, which is sleeved on the outer periphery of the roller shaft 142, rotates around the roller shaft 142.

[0059] Because the outer surface of the tapered roller bearing 145 abuts against the inner surface of the tapered roller 141, and the inner surface contacts the roller shaft 142, during the rotation of the tapered roller 141, the rolling of the rollers in the tapered roller bearing 145 transforms the sliding friction between the tapered roller 141 and the roller shaft 142 into rolling friction, allowing the tapered roller 141 to rotate more smoothly around the roller shaft 142. Furthermore, under the same conditions, the coefficient of rolling friction is less than that of sliding friction. By introducing the tapered roller bearing 145 between the tapered roller 141 and the roller shaft 142, the original sliding friction is transformed into rolling friction. This effectively reduces friction while uniformly transmitting stress through the tapered roller bearing 145, preventing the tapered roller 141 from shifting or jamming, ensuring rotational stability, and avoiding vibrations caused by uneven force, thus achieving smooth movement of the drive device 1.

[0060] In this rolling guide drive device 1, the stability of the roller assembly 14 is key to reducing vibration. If the parts of the roller assembly 14 are not secure, the tapered roller 141 will vibrate axially during rolling. Also, if the bearing clearance is too large, vibration will occur, which will cause the stopper rod 6 to vibrate.

[0061] Therefore, the roller assembly 14 includes a bushing 147; the bushing 147 is fitted onto the roller shaft 142, with one side abutting against the tapered roller bearing 145 and the other side abutting against the bearing cap 143. By using the bushing 147 to abut against the tapered roller bearing 145 and the bearing cap 143 respectively, a rigid constraint is formed, which also fills the gap between the tapered roller bearing 145 and the bearing cap 143. This effectively prevents the tapered roller bearing 145 from axially moving during rolling, and also solves the problem of uneven rolling of the tapered roller 141 caused by vibration due to excessive gap.

[0062] In addition, since dust will accumulate on the roller assembly 14 during the rolling process of the tapered roller 141, in order to prevent dust from entering the interior of the roller assembly 14 during the rolling process and affecting the performance of the roller assembly 14, such as causing jamming when the tapered roller 141 is rolling.

[0063] Therefore, a groove 1471 is provided on the outer diameter of the bushing 147, and a sealing ring 146 is installed at the groove 1471. The sealing ring 146 is an elastic sealing ring 146. By placing the sealing ring 146 at this position, dust can be effectively blocked on the outside of the bushing 147, and external dust can enter the central cavity 17.

[0064] In addition, during the rolling process of the machine, since the coefficient of friction always exists, in order to make the coefficient of friction smaller, one of the bearing covers 143 is provided with an oil cup 148; the roller shaft 142 is provided with an axially arranged oil passage 1421, which extends from the end of the roller shaft 142 to the central cavity 17; the oil cup 148 is connected to the oil passage 1421 through the channel 1431 on the bearing cover 143.

[0065] During use, lubricating oil is added through the oil cup 148. Under the action of rolling pressure, the lubricating oil enters the central cavity 17 along the oil passage 1421, forming an oil film on the rolling contact surfaces between the tapered roller 141, the tapered roller bearing 145, and the roller shaft 142. Under the continuous action of rolling pressure, the lubricating oil evenly penetrates along the axial oil passage 1421 to the contact surfaces of the tapered roller 141, the tapered roller bearing 145, and the roller shaft 142, effectively reducing the coefficient of friction of the contact surfaces, reducing wear, and thus improving the smoothness of operation and service life of the roller assembly 14.

[0066] It should also be noted that the sealing ring 146 mentioned above can also effectively prevent the lubricating oil in the central cavity 17 from leaking onto the outer surface of the tapered roller through the bearing cover 143, thus preventing the tapered roller from slipping and rolling ineffectively when rolling along the tapered guide surface 133.

[0067] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0068] In the description of this application, 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", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application.

[0069] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0071] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0072] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A drive device with rolling guidance for driving the lifting and lowering of a stopper bar in a continuous casting machine, characterized in that: Includes a housing, which is equipped with a driving component; The guide rod assembly is disposed on the outer surface of the housing; The guide rod assembly includes a guide surface, which is an inclined conical working surface; The roller assembly includes: The fixed end is connected to the external frame; The rolling end is provided with a tapered roller, the rim profile of which matches the tapered working surface to form a surface contact.

2. The drive device with rolling guidance according to claim 1, characterized in that: The guide rail surface is a tapered working surface with an inclination angle of 130° to 160°.

3. The drive device with rolling guidance according to claim 1, characterized in that: The roller assembly includes a roller base and a roller shaft; The roller seat is detachably connected to bearing caps at both ends, and the roller seat and the two bearing caps together form an assembly area. The roller shaft is arranged laterally in the assembly area, with its two ends pivotally connected to a bearing cap, and the tapered roller is sleeved on the outer side of the roller shaft.

4. A drive device with rolling guidance according to claim 3, characterized in that: The conical roller is sleeved on the outer periphery of the roller shaft to form a central cavity between the conical roller and the roller shaft; A tapered roller bearing is also fitted around the outer periphery of the roller shaft. The tapered roller bearing is located in the central cavity and its outer surface abuts against the inner surface of the tapered roller.

5. A drive device with rolling guidance according to claim 4, characterized in that: The roller assembly includes a bushing; The bushing is fitted onto the roller shaft, with one side abutting against the tapered roller bearing and the other side abutting against the bearing cap.

6. A drive device with rolling guidance according to claim 5, characterized in that: The outer diameter of the bushing is provided with a groove, and a sealing ring is installed in the groove.

7. A drive device with rolling guidance according to claim 4, characterized in that: The bearing cover on one side is equipped with an oil cup; The roller shaft is provided with an axially arranged oil passage that extends from the end of the roller shaft to the central cavity; The oil cup is connected to the oil passage through a channel on the bearing cover.

8. A drive device with rolling guidance according to claim 1, characterized in that: The guide rail surfaces are respectively provided on both sides of the housing; Each guide rail is fitted with one of the roller assemblies.

9. A drive device with rolling guidance according to claim 1, characterized in that: The drive components include a manually driven rocker arm assembly and an automatically driven electric cylinder. The rocker arm assembly includes a handle and a gear disk; The guide rod assembly includes a rack, which is fixedly connected to the housing; The gear disk is meshed with the rack; When the housing is manually driven to move linearly back and forth, the gear disk reciprocates along the rack.

10. A drive device with rolling guidance according to claim 9, characterized in that: The top of the electric cylinder is connected to an upper support, and the bottom of the electric cylinder is connected to a lower support. The guide rod assembly includes a first telescopic frame and a second telescopic frame; The second telescopic frame is integrally connected to the box body; The upper support is connected to the first telescopic frame, and the lower support is connected to the bottom of the box. When the electric cylinder is driven, the upper support moves back and forth in the vertical direction, causing the first telescopic frame to extend and retract relative to the second telescopic frame.

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