A crystallization tube connecting mechanism based on oxygen-free copper continuous casting processing

Abstract

The application relates to the technical field of up-drawing continuous casting, in particular to a crystallization tube connecting mechanism based on oxygen-free copper continuous casting processing, which is used for up-drawing continuous casting equipment and comprises a mounting seat fixed to the up-drawing continuous casting equipment, a receiving frame connected to the bottom of the mounting seat and configured to receive and position a crystallization tube, and a connecting rod locking assembly arranged on the mounting seat and configured to axially move a hollow transmission shaft through single handle operation to realize axial fixation and automatic centering of the crystallization tube when the hollow transmission shaft moves downward to a dead point position. The application discards the traditional multi-bolt fastening mode, adopts a connecting rod transmission and dead point locking mechanism, and only needs to pull a single handle to complete the locking and releasing of the crystallization tube, so that the efficiency of tube replacement is greatly improved, and the downtime waiting time is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of continuous casting technology, specifically to a crystallization tube connection mechanism based on oxygen-free copper continuous casting. Background Technology

[0002] In the upward continuous casting process, the crystallizer tube is a core consumable and key component. Its lower half is inserted into the high-temperature molten copper, and cooling water is circulated inside to form the initial solidified shell. Due to the diverse requirements of downstream customers for copper rod diameter specifications and slag adhesion on the inner wall of the crystallizer tube, the production line needs to frequently replace the crystallizer tube. Currently, the mainstream upward continuous casting equipment in the industry usually uses flange bolt connections or rigid clamps to fix the crystallizer tube. The typical structure includes a fixed base, pressure plate or clamp, and multiple fastening bolts to press and fix the crystallizer tube.

[0003] The aforementioned multi-bolt fastening structure has the following technical defects in actual production and operation: First, the disassembly and assembly process is cumbersome. When replacing the tube, operators must use a wrench to disassemble and assemble the bolts one by one and perform manual alignment, resulting in long downtime and low equipment utilization. Second, uneven preload of each bolt can easily cause slight radial offset or tilting of the crystallizing tube, making it difficult to guarantee alignment accuracy, which in turn can lead to quality defects such as copper rod breakage, eccentricity, or surface cracks. Third, when a sudden power outage or other fault causes the cooling water circulation to be interrupted, the cooling water that has stopped flowing in the crystallizing tube continues to be heated and rises in temperature. In a short time, it vaporizes and expands to generate high pressure. The existing connection structure cannot sense the change in flow channel pressure and respond automatically, which poses risks to equipment damage and personnel safety. Summary of the Invention

[0004] The purpose of this invention is to provide a crystallization tube connection mechanism based on oxygen-free copper continuous casting. It adopts a connecting rod dead point locking to replace multiple bolt fastening to achieve single-handle quick change, and uses a spiral groove snap-fit ​​structure to achieve automatic centering. It also integrates a passive safety lock driven by a steam explosion, which automatically unlocks and lifts the tube to release pressure when cooling is interrupted, thereby solving the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a crystallization tube connection mechanism based on oxygen-free copper continuous casting, used in an upward continuous casting equipment, comprising:

[0006] Mounting base, which is fixed to the upper continuous casting equipment;

[0007] A receiving bracket, connected to the bottom of the mounting base, is configured to receive and position the crystallizing tube;

[0008] A linkage locking assembly is disposed on the mounting base and configured to drive a hollow drive shaft axially through a single handle operation, so as to achieve axial fixation and automatic centering of the crystallizer tube when the hollow drive shaft moves down to the dead position.

[0009] Preferably, the linkage locking assembly includes a drive rod, a transmission rod, and a hollow transmission shaft. The drive rod is connected to the hollow transmission shaft via the transmission rod. When the drive rod is flipped downward to the locked position, its hinge point with the transmission rod passes the dead point, thereby achieving position self-locking by utilizing the force of the reset member.

[0010] Preferably, it further includes an adaptive connection component, which includes a connecting sleeve and a connecting seat. The connecting sleeve is configured to be rotatably connected to the bottom of the hollow drive shaft, and the connecting seat is configured to be fixedly connected to the top of the water-cooling jacket sleeved outside the crystallizer tube.

[0011] Preferably, the connecting sleeve is provided with a spiral groove and is slidably engaged with the connecting seat by a positioning pin; the bottom end of the connecting sleeve is provided with a snap-fit ​​part, and the connecting seat is provided with a snap-fit ​​groove adapted to the snap-fit ​​part;

[0012] When the hollow drive shaft moves downward, the connecting sleeve is configured to be compressed and retracted, and driven to rotate by the cooperation of the spiral groove and the positioning pin, so that the snap-fit ​​part is snapped into the horizontal section of the snap-fit ​​groove.

[0013] Preferably, the locking groove is an L-shaped groove comprising a vertical section and a horizontal section, and the locking part is a claw structure that first enters the vertical section and then turns into the horizontal section.

[0014] Preferably, the connector is configured to be fixedly connected to the top of the water-cooling jacket at the end of the crystallizer tube, and the connector has a connecting hole that communicates with the cooling channel inside the crystallizer tube.

[0015] Preferably, it also includes an adaptive locking component, which is disposed on the connecting seat and configured to be driven by high-pressure steam when the cooling water in the cooling channel is heated and vaporized and expands, so as to release the self-locking state of the connecting rod locking component and forcibly restrict the rotation of the connecting sleeve, so that the crystallizer tube is released from the high-temperature copper liquid along with the hollow transmission shaft, and at the same time realizes the depressurization of the cooling channel.

[0016] Preferably, the adaptive locking assembly includes a mounting housing, an arc-shaped slider, and a transmission disk, with pushing parts drivingly connected to both sides of the transmission disk;

[0017] The mounting housing is provided with a drive chamber that communicates with the connecting hole. High-pressure steam enters the drive chamber through the connecting hole to push the arc-shaped slider, thereby driving the transmission disk to rotate and driving the two sets of push parts to move.

[0018] Preferably, the pushing part includes a linkage rod and a pushing rod;

[0019] One set of push rods is configured to be inserted into the locking portion of the connecting sleeve to restrict the rotation of the connecting sleeve, and the other set of push rods is configured to push the linkage locking assembly past the dead point.

[0020] Preferably, when the transmission disc drives the linkage rod and the push rod past the dead point position, the pressure relief hole on the mounting housing is configured to communicate with the drive cavity, so as to realize the pressure relief of the cooling channel to the outside and to realize the forced locking of the connecting sleeve and the connecting seat.

[0021] In the above technical solution, the beneficial effects of the present invention are:

[0022] 1. This invention abandons the traditional multi-bolt fastening mode and adopts a linkage transmission and dead-point locking mechanism. Only a single handle needs to be turned to complete the locking and releasing of the crystallization tube, which greatly improves the efficiency of tube replacement and greatly reduces downtime.

[0023] 2. When the hollow drive shaft moves downward, the present invention uses a spiral groove to drive the snap-fit ​​part to rotate into the horizontal section of the L-shaped groove, forcibly correcting the radial offset of the crystal tube and limiting the coaxiality deviation within the allowable range. This fundamentally eliminates the radial offset or tilt caused by uneven manual tightening force, and significantly reduces the breakage rate, eccentricity and surface crack defects of the copper rod.

[0024] 3. The adaptive locking component of this invention forms a closed loop of cooling interruption, steam explosion drive, automatic pipe lifting and depressurization. It does not require external sensors or power supply. In the event of a sudden power outage, it can complete pipe detachment and depressurization in a short time, avoiding equipment damage and copper liquid splashing.

[0025] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0026] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0028] Figure 1 This is a schematic diagram of the structure of the crystallizer tube after locking according to the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of the crystallizer tube before locking, as shown in the present invention.

[0030] Figure 3 This invention is presented to highlight the structural schematic diagram of the adaptive connection component;

[0031] Figure 4 This is a schematic diagram of the structure of the connecting sleeve and the connecting seat of the present invention;

[0032] Figure 5 This is a structural schematic diagram highlighting the position of the adaptive locking component in this invention;

[0033] Figure 6 This is a schematic diagram of the structure of the pushing part of the present invention before and after the driving action;

[0034] Figure 7 This is a schematic diagram of the structure of the arc-shaped slider and the mounting housing of the present invention.

[0035] Figure 8 This is a schematic diagram of the structure of the adaptive locking component of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] In the diagram: 1. Mounting base; 2. Receiving frame; 3. Linkage locking assembly; 31. Driving rod; 32. Transmission rod; 33. Hollow transmission shaft; 34. Return spring one; 4. Adaptive connection assembly; 41. Connecting sleeve; 42. Spiral groove; 43. Positioning pin; 44. Snap-fit ​​part; 45. Connecting seat; 46. Snap-fit ​​groove; 47. Connecting hole; 5. Adaptive locking assembly; 51. Mounting housing; 52. Arc-shaped slider; 53. Transmission disc; 54. Pushing part; 541. Linkage rod; 542. Push rod; 543. Return spring two; 55. Pressure relief hole; 6. Crystallizer tube; 7. Water cooling jacket. Detailed Implementation

[0038] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0039] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0040] Please see Figures 1 to 2This invention provides a crystallizer tube connection mechanism based on oxygen-free copper continuous casting for use in an upward continuous casting equipment. It includes a mounting base 1, a receiving frame 2, and a connecting rod locking assembly 3. The mounting base 1 is fixed to the upward continuous casting equipment. The receiving frame 2 is connected to the bottom of the mounting base 1 and is configured to receive and position the crystallizer tube 6. The connecting rod locking assembly 3 is disposed on the mounting base 1 and is configured to drive the hollow drive shaft 33 axially through a single handle operation, thereby achieving axial fixation and automatic centering of the crystallizer tube 6 when the hollow drive shaft 33 moves down to its dead position.

[0041] In a specific embodiment, the receiving frame 2 has a U-shaped structure, and its internal dimensions are adapted to the crystallizing tube 6. A rubber pad adapted to its shape is glued to the top of the receiving frame 2. The rubber pad is made of high-temperature resistant silicone rubber and has anti-slip texture on its surface, which is used to buffer the locking impact and compensate for installation tolerances. The crystallizing tube 6 is positioned in the receiving frame 2 through the water-cooling jacket 7. The hollow drive shaft 33, the connecting sleeve 41 and the connecting seat 45 are all hollow structures. The copper rod, which is cooled and formed by the crystallizing tube 6 and the water-cooling jacket 7, is led out upward along the hollow position.

[0042] In one embodiment of the present invention, the receiving frame 2 may also adopt a V-shaped or semi-circular structure, and the contact curvature between its positioning surface and the outer periphery of the crystallizing tube 6 can be customized according to the outer diameter of the water cooling jacket 7; in addition to the high-temperature resistant silicone rubber mentioned above, the rubber pad material may also be a polyimide composite gasket or a woven asbestos gasket filled with PTFE, to adapt to higher temperature conditions (such as a long-term environment >200℃ near a continuous casting furnace). When the production line frequently changes the tube specifications, the receiving frame 2 may be designed as a split clamping structure, with the two halves tightened by lateral bolts to accommodate the outer diameter differences of multiple specifications of water cooling jackets 7.

[0043] Please see Figures 1 to 2 The linkage locking assembly 3 includes an active rod 31, a transmission rod 32, and a hollow transmission shaft 33. The active rod 31 is connected to the hollow transmission shaft 33 via the transmission rod 32. When the active rod 31 is flipped downward to the locked position, its hinge point with the transmission rod 32 passes the dead point, so as to achieve position self-locking by utilizing the force of the reset member.

[0044] In a specific embodiment, a return spring 34 is movably mounted on the outside of the hollow drive shaft 33, located above the mounting base 1. The front of the mounting base 1 is machined with an inclined surface adapted to the drive rod 31. When the drive rod 31 is rotated downwards to its limit position, it engages with this inclined surface. At this time, the center line connecting the drive rod 31 and the transmission rod 32 passes the dead point position by 1-3°. Utilizing the self-locking characteristic of the linkage mechanism, the hollow drive shaft 33 is prevented from resetting due to the return spring 34 without external force, ensuring that the crystallizing tube 6 remains locked during operation. When disassembling the crystallizing tube 6, the lock on the crystallizing tube 6 can be released by reversing the handle of the drive rod 31, enabling quick tube replacement.

[0045] In one embodiment of the present invention, the reset spring 34 can also be replaced by a disc spring assembly, a gas spring or a hydraulic reset cylinder. When a single machine needs to lock multiple crystallizer tubes 6 at the same time, a reset cylinder driven by a centralized air circuit can be used for unified control to achieve a batch tube replacement mode of releasing all crystallizer tubes with one key.

[0046] In one embodiment of the present invention, the dead point overshoot angle can be extended to 2-5° in addition to 1-3°, depending on the operating force required by the handle. The larger the angle, the more reliable the self-locking, but the greater the unlocking force required. It can be selected according to the operator's arm strength. The inclined surface on the front of the mounting base 1 can also be changed to an arc guide surface, so that the feel of the active rod 31 gradually increases linearly as it approaches the dead point, avoiding the impact caused by sudden locking.

[0047] In practical applications, when there are many specifications of crystallizing tubes 6 in the production line, an axial adjustment groove can be added to the mounting base 1 to make the overall installation height of the connecting rod locking assembly 3 adjustable to adapt to the position of the top connecting base 45 of the water cooling jacket 7 of different lengths.

[0048] Please see Figures 3 to 4 The invention also includes an adaptive connection component 4, which includes a connecting sleeve 41 and a connecting seat 45. The connecting sleeve 41 is configured to be rotatably connected to the bottom of the hollow drive shaft 33, and the connecting seat 45 is configured to be fixedly connected to the top of the water-cooling jacket 7 that is sleeved outside the crystallizer tube 6.

[0049] In a specific embodiment, the connecting sleeve 41 is snapped into the inside of the bottom end of the hollow drive shaft 33, ensuring that the connecting sleeve 41 can rotate and move axially inside the bottom end of the hollow drive shaft 33; the connecting seat 45 is rigidly fixed to the top of the water-cooling jacket 7 by bolts or welding; the connecting sleeve 41 and the connecting seat 45 form a detachable snap-fit ​​engagement, realizing the axial pulling and radial positioning of the water-cooling jacket 7 when the hollow drive shaft 33 moves downward.

[0050] Please see Figures 3 to 4 The connecting sleeve 41 is provided with a spiral groove 42 and slides with the connecting seat 45 through a positioning pin 43; the bottom end of the connecting sleeve 41 is provided with a snap-fit ​​part 44, and the connecting seat 45 is provided with a snap-fit ​​groove 46 adapted to the snap-fit ​​part 44. The snap-fit ​​groove 46 is an L-shaped groove including a vertical section and a horizontal section, and the snap-fit ​​part 44 is a claw structure that first enters the vertical section and then turns into the horizontal section.

[0051] In a specific embodiment, the positioning pin 43 is rotatably mounted on the end of a screw and is mounted on the hollow drive shaft 33 by the screw. The positioning pin 43 extends into the interior of the hollow drive shaft 33 and is engaged in the spiral groove 42 to achieve a sliding fit. The engaging part 44 is a protrusion or claw structure. After locking the crystal tube 6, the position of a set of engaging parts 44 corresponds to the adaptive locking component 5, and the engaging part 44 is provided with a locking hole that cooperates with the adaptive locking component 5.

[0052] In one embodiment of the present invention, the spiral groove 42 can also be replaced by a cam inclined surface or a Z-shaped zigzag groove, as long as it can drive the connecting sleeve 41 to rotate when it retracts axially, so that the snap-fit ​​part 44 disengages from the snap-fit ​​groove 46; the number of mating pairs between the positioning pin 43 and the spiral groove 42 can be 1 set (main scheme) or 2-3 sets evenly distributed. Multiple sets of mating pairs can reduce single-point wear and improve rotational stability.

[0053] In one embodiment of the present invention, in addition to the L-shaped (vertical section + horizontal section) slot, the snap-fit ​​groove 46 can also adopt other groove types such as T-shaped groove and wedge-shaped groove.

[0054] In practical applications, in addition to bolts and welding, the connecting seat 45 and the water cooling jacket 7 can also be fixed by a conical interference fit with a snap ring for axial limiting, which makes it easy to replace the connecting seat 45 separately on site without disassembling the water cooling jacket 7 as a whole.

[0055] Please see Figures 1 to 4 During initial installation, the crystallizer tube 6 is positioned and clamped into the receiving frame 2 by the water-cooling jacket 7, and the clamping part 44 on the connecting sleeve 41 is aligned with the vertical section of the clamping groove 46 in the top connecting seat 45 of the water-cooling jacket 7. The handle on the active rod 31 is moved downwards, and the active rod 31, through the transmission rod 32, synchronously drives the hollow transmission shaft 33 to move downwards against the elastic force of the return spring 34. The hollow transmission shaft 33 synchronously drives the connecting sleeve 41 downwards, and the clamping part 44 on the connecting sleeve 41 first engages with the vertical section of the clamping groove 46. When the bottom of the clamping part 44 is in contact with the clamping groove 46... When the bottom of the slot 46 contacts, the hollow drive shaft 33 continues to move downward, pushing the connecting sleeve 41 back into the hollow drive shaft 33. Through the restriction of the spiral groove 42 by the positioning pin 43, the connecting sleeve 41 is driven to rotate as a whole during its retraction, causing the locking part 44 to engage with the horizontal section of the locking groove 46. After the driving rod 31 flips downward into place, it adheres to the inclined surface on the front of the mounting base 1. The hinge point between the driving rod 31 and the drive rod 32 passes the dead point, locking the position of the hollow drive shaft 33. Simultaneously, it locks the water-cooling jacket 7 and the crystallizing tube 6 between the hollow drive shaft 33 and the receiving frame 2. It should be noted that when the adaptive locking component 5 is not driven to lock the locking part 44, when the hollow drive shaft 33 moves upward to reset, the connecting sleeve 41 can rotate in the opposite direction driven by the spiral groove 42 and the positioning pin 43, causing the locking part 44 to disengage from the locking groove 46, thereby achieving free disengagement of the connecting sleeve 41 from the connecting base 45.

[0056] As can be seen from the above embodiments, when the crystallizer 6 is in operation, the lower half of it is inserted into the high-temperature copper liquid. If a sudden power outage or other fault occurs, the cooling water circulation of the cooling system inside the crystallizer 6 will be interrupted. The lower half of the crystallizer 6 will continue to be in contact with the high-temperature copper liquid, causing the cooling water inside the crystallizer 6 to continue to heat up. The cooling water will vaporize and expand in a short time, generating huge pressure, which can easily cause equipment damage and also affect the safety of personnel working in the environment. Therefore, the following embodiments are proposed to solve the above problems.

[0057] Please see Figure 5 The present invention also includes an adaptive locking component 5, which is disposed on the connecting seat 45 and is configured to be driven by high-pressure steam when the cooling water in the cooling channel is heated and vaporized and expanded, so as to release the self-locking state of the connecting rod locking component 3 and forcibly restrict the rotation of the connecting sleeve 41, so that the crystal tube 6 is separated from the high-temperature copper liquid by resetting with the hollow transmission shaft 33, and at the same time realizes the depressurization of the cooling channel.

[0058] In a specific embodiment, the adaptive locking component 5 is integrated on the side of the connecting seat 45. The connecting seat 45 has a connecting hole 47, which is connected to the cooling channel inside the crystal tube 6. The adaptive locking component 5 is connected to the cooling channel inside the crystal tube 6 through the connecting hole 47. The internal structure of the adaptive locking component 5 is driven by the high-pressure steam generated by the expansion of the cooling water in the cooling channel due to heat vaporization, and achieves linkage with the active rod 31 and the connecting sleeve 41. It drives the active rod 31 and the transmission rod 32 past the dead point, so that the return spring 34 can drive the hollow transmission shaft 33 to reset. At this time, the connecting sleeve 41 is in a locked state, that is, the connecting sleeve 41 cannot rotate and disengage from the connecting seat 45, thereby enabling the hollow transmission shaft 33 to move the water cooling jacket 7 and the crystal tube 6 upward and disengage from the high-temperature copper liquid when it resets.

[0059] Please see Figures 7 to 8 The adaptive locking component 5 includes a mounting housing 51, an arc-shaped slider 52, and a transmission disk 53. Both sides of the transmission disk 53 are connected to push parts 54. The mounting housing 51 is provided with a drive chamber that communicates with the connecting hole 47. High-pressure steam enters the drive chamber through the connecting hole 47 to push the arc-shaped slider 52, thereby driving the transmission disk 53 to rotate and driving the two sets of push parts 54 to move.

[0060] In a specific embodiment, the arc-shaped slider 52 is engaged inside the mounting housing 51 and can rotate inside the mounting housing 51. A notch is provided on one side of the arc-shaped slider 52, and a driving cavity is formed between the notch and the mounting housing 51. The driving cavity is connected to the connecting hole 47, and a positioning block is provided on the side of the driving cavity near the pressure relief hole 55 to restrict the position of the arc-shaped slider 52. When the cooling water in the cooling channel is heated and vaporized, it expands and high-pressure steam enters the driving cavity and pushes the arc-shaped slider 52 to rotate clockwise. The arc-shaped slider 52 drives the transmission disk 53 to rotate synchronously, providing power for the action of the two sets of push parts 54.

[0061] Please see Figures 7 to 8 A preset damping torque is provided between the arc-shaped slider 52 and the mounting housing 51; when the cooling water in the cooling channel is not heated and vaporized, the rotational driving force exerted by the water pressure in the cooling water channel on the arc-shaped slider 52 is less than the preset damping torque, thereby preventing leakage along the adaptive locking component 5 when the cooling water is circulating normally.

[0062] In a specific embodiment, in the initial state, the reset spring 543 applies a spring force to the push rod 542 to retract into the mounting housing 51, and transmits it to the arc-shaped slider 52 through the linkage rod 541 and the transmission disk 53. This is the damping torque of the arc-shaped slider 52 in the initial state. This damping torque is greater than the rotational driving force applied to the arc-shaped slider 52 by the water pressure in the cooling water channel, thereby preventing leakage along the adaptive locking component 5 when the cooling water is circulating normally.

[0063] In one embodiment of the present invention, in addition to the return spring 543, the damping torque can also be provided by a magnetic damper, a silicone friction plate or a miniature torsion spring; the advantage of the magnetic damper is that there is no mechanical wear and the damping force is adjustable, which is suitable for production lines that are inconvenient to maintain and operate year-round; the silicone friction plate has low cost and can be integrally molded with the arc-shaped slider 52.

[0064] In one embodiment of the present invention, the two sets of top pushers 54 are mainly allocated (one set of locking connecting sleeves 41, and the other set of pushing connecting rod dead points), which can also be combined into one set of L-shaped linkage top rods to simultaneously complete the two actions of locking the sleeves and pushing the dead points. The structure is more compact and suitable for small continuous casting machines with limited installation space. Conversely, when the crystal tube 6 is larger (φ180 or above), it can also be expanded into three sets of top pushers: two sets of symmetrical locking connecting sleeves 41 to prevent off-center loading, and one set dedicated to pushing connecting rod dead points to improve unlocking reliability.

[0065] In one embodiment of the present invention, in addition to the pressure relief hole 55 being located at the end displacement endpoint of the arc-shaped slider 52 corresponding to the mounting housing 51, a bypass pressure relief valve (such as a spring-loaded pressure relief valve) can also be provided on the side wall of the drive cavity as a secondary protection. When the arc-shaped slider 52 is stuck, the cooling channel can still be depressurized, thus preventing the crystallization tube 6 from bursting.

[0066] In one embodiment of the present invention, the external handwheel of the transmission disc 53 is the main solution, but it can also be replaced by an electric actuator or an electromagnet for forced reset: after troubleshooting, pressing the button will cause the push part 54 to retract, eliminating the need for manual rotation of the handwheel; furthermore, a pressure sensor and controller can be added in the drive cavity, and when the abnormal rise in the cooling channel pressure is detected but does not reach the steam explosion threshold, an alarm is set in advance to achieve two-level protection of early warning and automatic pipe lifting.

[0067] In one embodiment of the present invention, a simplified version of a purely mechanical adaptive lock can be provided as a low-cost alternative: the arc-shaped slider 52 and the transmission disk 53 are eliminated and replaced with a diaphragm pressure tank directly connected to the connecting hole 47. The diaphragm is pressed and pushes a push rod to complete the locking sleeve push dead point at the same time. There is no moving sealing pair, and the cost can be reduced by about 40%. It is suitable for small test lines or scenarios with slightly lower reliability requirements.

[0068] Please see Figures 6 to 8 The pusher 54 includes a linkage rod 541 and a pusher rod 542; one set of pusher rods 542 is configured to be inserted into the locking part 44 of the connecting sleeve 41 to restrict the rotation of the connecting sleeve 41, and the other set of pusher rods 542 is configured to push the linkage locking assembly 3 past the dead point.

[0069] In a specific embodiment, the two sets of push rods 542 are respectively aligned with the locking holes on the first set of locking parts 44 after rotation into position and the back of the handle after the active rod 31 is flipped downward into position; the rotational motion of the transmission disk 53 is converted into the linear displacement of the push rod 542 through the linkage rod 541; when the cooling water in the cooling channel is heated and vaporized, it can drive the two sets of push parts 54 to move synchronously, release the self-locking state of the active rod 31 and the transmission rod 32, so that the hollow transmission shaft 33 can be reset by the elastic force of the reset spring 34, and realize the locking of the rotation of the connecting sleeve 41, that is, when the hollow transmission shaft 33 is reset, it drives the crystal tube 6 to move upward and separate from the high temperature copper liquid.

[0070] Please see Figures 6 to 8 When the transmission disc 53 drives the linkage rod 541 and the push rod 542 past the dead point position, the pressure relief hole 55 on the mounting housing 51 is configured to communicate with the drive cavity to realize the pressure relief of the cooling channel to the outside and to realize the forced locking of the connecting sleeve 41 and the connecting seat 45.

[0071] In a specific embodiment, the mounting housing 51 is provided with a pressure relief hole 55 for pressure relief. When the arc-shaped slider 52 is driven to rotate clockwise by high-pressure steam, and the end of the arc-shaped slider 52 moves to the pressure relief hole 55, the linkage rod 541 and the push rod 542 move to the dead point position and achieve self-locking. When the arc-shaped slider 52 continues to be driven to rotate, the drive chamber is connected to the pressure relief hole 55, which can realize the discharge of high-pressure steam in the cooling channel to the outside for pressure relief. The bottom of the end cap at the top of the mounting housing 51 is provided with a limiting pin that cooperates with the linkage rod 541 to limit the linkage rod 541 and the push rod 542 to be driven by the arc-shaped slider 52 to cross the dead point by 1-3°. The transmission disk 53 and the center position of the arc-shaped slider 52 are fixedly fitted with a transmission shaft, and the transmission shaft extends to the top of the mounting housing 51 and is fitted with a handwheel. By rotating the transmission disk 53 by the handwheel, the push part 54 can be forcibly driven to reset so that the crystallizer tube 6 can be reinstalled after the fault is eliminated.

[0072] In practical applications, different configuration combinations can be selected according to the risk level of the production line:

[0073] Standard type (link locking assembly 3 only + adaptive connection assembly 4): suitable for production lines with stable power grid and backup power supply, mainly with single handle quick change, and lowest cost;

[0074] Standard safety type (main solution fully equipped: linkage lock, adaptive connection, adaptive lock): suitable for most industrial continuous casting production lines, automatic pipe lifting and pressure relief driven by steam explosion in the event of a sudden power outage;

[0075] High-reliability type (standard safety type, bypass pressure relief valve, electromagnetic forced reset, pressure sensor early warning): suitable for multi-head continuous casting machines with copper liquid temperature >1250℃ and dense arrangement of crystallization tubes, with two-stage pressure relief and electric control reset, providing the highest maintenance efficiency;

[0076] Low-cost experimental type (simplified pure mechanical adaptive lock, single-handle linkage lock): suitable for scientific research test lines or intermittent production scenarios.

[0077] All electrical components involved in this application are existing technologies. Those skilled in the art can select appropriate models of electrical components according to their needs. No restrictions or elaborations are made here. Those skilled in the art understand their connection methods. With the help of those skilled in the art, all electrical components in this application and their compatible power supplies can be connected by wires. And according to the actual situation, appropriate controllers can be selected to meet control requirements.

[0078] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A crystallization tube connection mechanism based on oxygen-free copper continuous casting, used in upward continuous casting equipment, characterized in that, include: Mounting base (1), which is fixed to the upper continuous casting equipment; The receiving frame (2) is connected to the bottom of the mounting base (1) and is configured to receive and position the crystallizing tube (6). The linkage locking assembly (3) is mounted on the mounting base (1) and is configured to drive a hollow drive shaft (33) to move axially by a single handle operation, so as to achieve axial fixation and automatic centering of the crystallizer tube (6) when the hollow drive shaft (33) moves down to the dead position.

2. The crystallizer connecting mechanism based on oxygen-free copper continuous casting according to claim 1, characterized in that, The linkage locking assembly (3) includes an active rod (31), a transmission rod (32), and a hollow transmission shaft (33). The active rod (31) is connected to the hollow transmission shaft (33) via the transmission rod (32). When the active rod (31) is flipped downward to the locked position, its hinge point with the transmission rod (32) passes the dead point, so as to realize the position self-locking by utilizing the force of the reset member.

3. The crystallization tube connection mechanism based on oxygen-free copper continuous casting according to claim 1, characterized in that, It also includes an adaptive connection component (4), which includes a connecting sleeve (41) and a connecting seat (45). The connecting sleeve (41) is configured to be rotatably connected to the bottom of the hollow drive shaft (33), and the connecting seat (45) is configured to be fixedly connected to the top of the water cooling jacket (7) sleeved outside the crystallizer (6).

4. The crystallizer connecting mechanism based on oxygen-free copper continuous casting according to claim 3, characterized in that, The connecting sleeve (41) is provided with a spiral groove (42) and slides with the connecting seat (45) through a positioning pin (43); the bottom end of the connecting sleeve (41) is provided with a snap-fit ​​part (44) and the connecting seat (45) is provided with a snap-fit ​​groove (46) adapted to the snap-fit ​​part (44). When the hollow drive shaft (33) moves downward, the connecting sleeve (41) is configured to be compressed and retracted and driven to rotate by the cooperation of the spiral groove (42) and the positioning pin (43), so that the snap-fit ​​part (44) is snapped into the horizontal section of the snap-fit ​​groove (46).

5. The crystallizer connecting mechanism based on oxygen-free copper continuous casting according to claim 4, characterized in that, The snap-fit ​​groove (46) is an L-shaped groove containing a vertical section and a horizontal section, and the snap-fit ​​part (44) is a claw structure that first enters the vertical section and then turns into the horizontal section.

6. The crystallizer tube connection mechanism based on oxygen-free copper continuous casting according to claim 3, characterized in that, The connecting seat (45) is configured to be fixedly connected to the top of the water-cooling jacket (7) at the end of the crystallizer (6), and a connecting hole (47) is provided in the connecting seat (45), which is connected to the cooling channel inside the crystallizer (6).

7. The crystallizer connecting mechanism based on oxygen-free copper continuous casting according to claim 6, characterized in that, It also includes an adaptive locking component (5), which is disposed on the connecting seat (45) and configured to be driven by high-pressure steam when the cooling water in the cooling channel is heated and vaporized and expanded, so as to release the self-locking state of the connecting rod locking component (3) and forcibly restrict the rotation of the connecting sleeve (41), so that the crystal tube (6) is separated from the high-temperature copper liquid by the hollow transmission shaft (33) and the pressure of the cooling channel is released at the same time.

8. The crystallizer connecting mechanism based on oxygen-free copper continuous casting according to claim 7, characterized in that, The adaptive locking assembly (5) includes a mounting housing (51), an arc-shaped slider (52), and a transmission disk (53), with pushers (54) connected to both sides of the transmission disk (53). The mounting housing (51) is provided with a drive chamber that communicates with the connecting hole (47). High-pressure steam enters the drive chamber through the connecting hole (47) to push the arc-shaped slider (52), thereby driving the transmission disk (53) to rotate and driving the two sets of push parts (54) to move.

9. The crystallizer connecting mechanism based on oxygen-free copper continuous casting according to claim 8, characterized in that, The pusher (54) includes a linkage rod (541) and a pusher (542). One set of push rods (542) is configured to be inserted into the snap-fit ​​portion (44) of the connecting sleeve (41) to restrict the rotation of the connecting sleeve (41), and the other set of push rods (542) is configured to push the link locking assembly (3) past the dead point.

10. The crystallizer connecting mechanism based on oxygen-free copper continuous casting according to claim 9, characterized in that, When the transmission disc (53) drives the linkage rod (541) and the push rod (542) past the dead point position, the pressure relief hole (55) on the mounting housing (51) is configured to communicate with the drive cavity to realize the pressure relief of the cooling channel to the outside, and to realize the forced locking of the connecting sleeve (41) and the connecting seat (45).

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