Stopper rod replacement device

Abstract

The present invention provides a stopper rod replacement device, which relates to the field of metallurgy and provides a stopper rod replacement device, including: a stopper rod bracket for installing a stopper rod body including a lifting sleeve; a lifting assembly including at least two groups, each lifting assembly group cooperates with the lifting sleeve; a locking replacement assembly including a lifting mechanism and a self-locking mechanism, and the lifting mechanism can switch the self-locking mechanism between an open state and a closed state. In the stopper rod replacement device provided by the present invention, a spare stopper rod is suspended to a high place through a lifting assembly; when the stopper rod needs to be replaced, the lifting mechanism is opened to open the self-locking mechanism to lift and remove the damaged stopper rod through the lifting assembly; at the same time, another group of lifting assemblies drops the spare stopper rod bracket to the lowest point, opens the lifting mechanism to open the self-locking mechanism and cooperates with the lifting sleeve of the stopper rod bracket to achieve closed locking, so that the spare stopper rod works, and the rapid replacement of the stopper rod is realized to ensure continuous casting of the tundish, improve casting efficiency, and ensure personnel safety at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgy, and in particular to a stopper rod replacement device. Background Art

[0002] The tundish is a refractory container used in short-process steelmaking. It first receives the molten steel poured from the ladle, and then distributes it to each crystallizer through the tundish water outlet. The stopper rod is a refractory rod installed in the ladle that controls the opening and closing of the water outlet and the flow of molten steel by lifting and displacement. It is also called a ceramic stopper rod. It consists of a rod core, sleeve bricks and stopper bricks.

[0003] With the mature application of continuous casting technology of different steel grades and the improvement of continuous casting process management, the life of continuous casting tundish is required to be higher; the continuous casting life of a single tundish has reached more than 100 hours. At this time, the integral stopper rod for flow control cannot control the injection speed due to slag line erosion and rod breakage or rod head erosion, and is forced to stop casting, causing interruption of casting, thereby affecting casting efficiency. At the same time, the existing replacement of stopper rods uses manual replacement technology, which has certain risks. Summary of the invention

[0004] The present invention provides a stopper rod replacement device, which is used to solve the defect in the prior art that the stopper rod replacement cannot meet the continuous long-term operation of the tundish, resulting in low casting efficiency. The stopper rod can be quickly replaced, thereby meeting the continuous long-term operation of the tundish, improving the casting efficiency and ensuring the safety of personnel during the replacement process.

[0005] The present invention provides a stopper rod replacement device, comprising:

[0006] A stopper rod bracket, used for mounting the stopper rod body, the stopper rod bracket being capable of adjusting the distance between the stopper rod body and the steel outlet, the stopper rod bracket comprising a lifting sleeve;

[0007] A lifting assembly, comprising at least two groups, each group of the lifting assembly cooperates with the lifting sleeve to enable the stopper rod support to be lifted or lowered;

[0008] The locking and replacement assembly comprises a lifting mechanism and a self-locking mechanism, wherein the lifting mechanism can switch the self-locking mechanism between an open state and a closed state. In the open state, the self-locking mechanism is disengaged from the lifting sleeve, so that the stopper rod support is matched with the lifting assembly; in the closed state, the self-locking mechanism is locked with the lifting sleeve, so that the stopper rod support is disengaged from the lifting assembly;

[0009] Wherein, each group of the lifting components corresponds to a group of the locking and replacement components.

[0010] The stopper rod replacement device provided according to the present invention further comprises a rotating assembly, which is installed between the lifting assembly and the locking replacement assembly, and the rotating assembly can rotate the lifting assembly and the stopper rod bracket relative to the locking replacement assembly.

[0011] According to the stopper rod replacement device provided by the present invention, the lifting assembly comprises a first driving mechanism and a lifting rod, wherein the first driving mechanism drives the lifting rod to rotate.

[0012] Wherein, the lifting sleeve is threadably matched with the lifting rod.

[0013] According to the stopper rod replacement device provided by the present invention, the lifting sleeve comprises a self-locking limit platform and an inner hole penetrating the lifting sleeve, and the inner hole comprises a threaded section and smooth sections disposed above and below the threaded section.

[0014] Among them, the threaded section cooperates with the lifting rod, and the self-locking limit platform cooperates with the self-locking mechanism to be locked.

[0015] According to the stopper rod replacement device provided by the present invention, the self-locking mechanism comprises a self-locking connecting rod, a self-locking release claw and an elastic member, wherein the elastic member is installed between the self-locking release claws and is used to open the self-locking release claws in the open state, and the self-locking release claws are hinged on the self-locking connecting rod.

[0016] Wherein, in the closed state, the self-locking release claw cooperates with the self-locking limit platform to lock, and the self-locking connecting rod is connected to the lifting mechanism.

[0017] According to the stopper rod replacement device provided by the present invention, the rotating assembly comprises a second driving mechanism and a transmission mechanism, the active member of the transmission mechanism is mounted on the second driving mechanism, and the driven member of the transmission mechanism is mounted on the lifting assembly.

[0018] Wherein, the second driving mechanism drives the transmission mechanism to drive the lifting assembly and the stopper rod support to rotate.

[0019] According to the stopper rod replacement device provided by the present invention, the rotating assembly further comprises an outer sleeve and an inner sleeve, the inner sleeve is connected to the outer sleeve, the second driving mechanism is connected to the outer sleeve, one end of the lifting assembly is placed between the outer sleeve and the inner sleeve, and the lifting assembly can rotate relative to the outer sleeve and the inner sleeve.

[0020] Wherein, the self-locking mechanism is placed in the inner sleeve and can be lifted and lowered relative to the inner sleeve.

[0021] According to the stopper rod replacement device provided by the present invention, the lifting mechanism comprises a gear shaft, a gear disc, a mounting seat and a mounting sleeve, one end of the gear shaft is placed in the mounting sleeve and can move linearly along the mounting sleeve, and the other end is connected to the self-locking mechanism, the mounting seat is mounted on the outer wall of the mounting sleeve, and the gear disc is hinged on the mounting seat.

[0022] The toothed disc is meshed with the gear shaft, and the toothed disc rotates around the hinge point of the mounting seat, so that the toothed disc drives the self-locking mechanism to rise and fall.

[0023] According to the stopper rod replacement device provided by the present invention, the locking replacement assembly includes a locking shell, and a fine-tuning assembly is arranged in the locking shell. When the self-locking mechanism and the lifting sleeve are locked, the fine-tuning assembly can adjust the distance between the stopper rod body and the steel tapping hole.

[0024] According to the stopper rod replacement device provided by the present invention, the locking replacement assembly includes a mounting shell and a sliding roller, the locking shell is placed in the mounting shell, the sliding roller is arranged between the mounting shell and the locking shell, and the sliding roller can make the locking shell and the mounting shell in rolling contact.

[0025] The stopper rod replacement device provided by the present invention realizes the constant preparation of spare stopper rods by preparing at least two groups of stopper rod replacement devices. The spare stopper rod is suspended to a high place by a lifting assembly to reduce the space occupied. When the stopper rod needs to be replaced, the lifting mechanism is opened to open the self-locking mechanism to lift and remove the damaged stopper rod through the lifting assembly. At the same time, the other group of lifting assemblies drops the spare stopper rod bracket to the lowest point, and the lifting mechanism is opened to open the self-locking mechanism. The self-locking mechanism cooperates with the lifting sleeve of the stopper rod bracket to realize closed locking, so that the spare stopper rod can be operated, and the stopper rod can be quickly replaced. The two groups of stopper rods can be quickly switched without stopping the casting, thereby ensuring the continuous casting of the tundish, improving the casting efficiency, and ensuring the safety of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of the stopper rod replacement device provided by the present invention;

[0028] Figure 2 is a schematic structural diagram of the stopper rod support provided by the present invention;

[0029] Figure 3It is a cross-sectional view of the self-locking mechanism provided by the present invention and the lifting sleeve in a matching state;

[0030] Figure 4 It is a schematic diagram of the structure of the locking replacement assembly provided by the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the rotating assembly provided by the present invention.

[0032] Reference numerals:

[0033] 100: stopper rod support; 101: stopper rod body; 102: support beam;

[0034] 103: Mounting screw; 104: Adjusting screw; 105: Adjusting threaded sleeve;

[0035] 106: lifting sleeve; 107: self-locking limit table;

[0036] 200: lifting assembly; 201: first driving mechanism; 202: lifting rod;

[0037] 203: lifting sleeve; 204: sliding slot;

[0038] 300: rotating assembly; 301: rotating gear; 302: driving gear;

[0039] 303: second driving mechanism; 304: outer sleeve; 305: inner sleeve;

[0040] 400: locking replacement assembly; 401: locking housing; 402: self-locking mechanism;

[0041] 403: self-locking release claw; 404: self-locking connecting rod; 405: sliding roller;

[0042] 406: telescopic cylinder; 407: telescopic rod; 408: first mounting seat;

[0043] 409: second mounting seat; 410: lifting mechanism; 411: gear shaft;

[0044] 412: toothed disc; 413: mounting sleeve; 414: mounting seat;

[0045] 420: elastic member; 430: mounting housing; 500: working box. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0048] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0050] Combine the following Figures 1 to 5 It should be understood that the following description is only an illustrative embodiment of the present invention and does not constitute a limitation on the present invention.

[0051] like Figure 1The present invention provides a stopper rod replacement device, comprising: a stopper rod support 100, a lifting assembly 200 and a locking replacement assembly 400. Among them:

[0052] The stopper rod bracket 100 is used to install the stopper rod body 101. The stopper rod bracket 100 can adjust the distance between the stopper rod body 101 and the steel outlet. The stopper rod bracket 100 includes a lifting sleeve 106; specifically, the stopper rod bracket 100 can adjust the distance between the stopper rod body 101 and the lifting assembly 200.

[0053] like Figure 2 As shown, in an optional embodiment of the present invention, the stopper rod support 100 includes a support beam 102, a mounting screw 103 and a distance adjustment mechanism, wherein one end of the support beam 102 is mounted on the lifting sleeve 106, and the other end is connected to the mounting screw 103; one end of the mounting screw 103 passes through the support beam 102 and is connected to the stopper rod body 101, and the other end is connected to one end of the distance adjustment mechanism, and the other end of the distance adjustment mechanism is mounted on the end of the support beam 102 close to the lifting sleeve 106, wherein the length of the distance adjustment mechanism is adjustable. The mounting screw 103 can move along the length direction of the support beam 102, driving the stopper rod body 101 to move, thereby adjusting the distance between the stopper rod body 101 and the steel outlet. Fastening bolts can be installed above and below the mounting screw 103 to fix the stopper rod body 101 at a specified position of the support beam 102.

[0054] For example, an open installation opening of a certain length is provided at one end of the support beam 102 away from the lifting sleeve 106, and the installation screw 103 moves in the installation opening to adjust the position of the stopper rod body 101. In addition, the distance adjustment mechanism includes an adjustment screw 104 and an adjustment threaded sleeve 105. One end of the adjustment threaded sleeve 105 is installed at one end of the support beam 102 close to the lifting sleeve 106, and the other end of the adjustment threaded sleeve 105 is threadedly matched with the adjustment screw 104 to achieve telescopic movement. One end of the adjustment screw 104 is connected to the installation screw 103. The adjustment screw 104 and the installation screw 103 can be threadedly connected.

[0055] The lifting assembly 200 includes at least two groups, and each group of the lifting assembly 200 cooperates with the lifting sleeve 106 to lift and lower the stopper rod support 100. Specifically, one group of the lifting assembly 200 is installed with a group of stopper rod supports 100. The stopper rod bodies 101 on one or several groups of stopper rod supports 100 are used in the tundish, and the stopper rod bodies 101 on other groups of stopper rod supports 100 are used as spares.

[0056] Continue to refer Figure 2In one embodiment of the present invention, the lifting assembly 200 includes a first driving mechanism 201 and a lifting rod 202, wherein the first driving mechanism 201 drives the lifting rod 202 to rotate, wherein the lifting sleeve 106 is threadedly engaged with the lifting rod 202. In other words, the first driving mechanism 201 drives the lifting rod 202 to rotate, thereby driving the lifting sleeve 106 to move linearly on the lifting rod 202.

[0057] Furthermore, the lifting assembly 200 includes a lifting sleeve 203, which has an axial sliding slot 204, the lifting sleeve 106 passes through the sliding slot 204 and cooperates with the lifting rod 202, the lifting rod 202 is placed in the lifting sleeve 203, the first driving mechanism 201 is placed at one end of the lifting sleeve 203, and the other end of the lifting sleeve 203 is connected to the locking replacement assembly 400.

[0058] like Figure 3 As shown, in another embodiment of the present invention, the lifting sleeve 106 includes a self-locking limit platform 107 and an inner hole passing through the lifting sleeve 106, the inner hole includes a threaded section and smooth sections placed above and below the threaded section, wherein the threaded section cooperates with the lifting rod 202, and the self-locking limit platform 107 cooperates with the self-locking mechanism 402 to lock.

[0059] Specifically, the self-locking limit platform 107 is placed below the lifting sleeve 106, and the inner hole passes through the self-locking limit platform 107, wherein a threaded section is provided in the middle of the inner hole for threaded cooperation with the lifting rod 202. The upper and lower parts of the threaded section of the inner hole are smooth sections, that is, the smooth section has no threads. In other words, the lifting rod 202 can only contact the threaded section when it passes through the smooth section at the upper part of the inner hole.

[0060] That is to say, when the lifting sleeve 106 is lowered to the end of the lifting rod 202, the lifting mechanism 410 pushes the self-locking mechanism 402 to rise, so that the self-locking mechanism 402 opens and cooperates with the self-locking limit platform 107. Then the lifting mechanism 410 drops the self-locking mechanism 402, and the self-locking mechanism 402 closes to lock the self-locking limit platform 107, and completely separates the threaded section of the lifting sleeve 106 from the lifting rod 202, thereby realizing the separation of the stopper rod bracket 100 from the lifting assembly 200.

[0061] The locking replacement assembly 400 includes a lifting mechanism 410 and a self-locking mechanism 402. The lifting mechanism 410 can switch the self-locking mechanism 402 between an open state and a closed state. In the open state, the self-locking mechanism 402 is separated from the lifting sleeve 106, so that the stopper rod support 100 is matched with the lifting assembly 200; in the closed state, the self-locking mechanism 402 is locked with the lifting sleeve 106, so that the stopper rod support 100 is separated from the lifting assembly 200. Each set of lifting assemblies 200 corresponds to a set of locking replacement assemblies 400.

[0062] Specifically, in the case where the stopper needs to be replaced, Figure 1 As shown, it includes at least one set of stopper rod holders 100 whose stopper rod bodies 101 need to be replaced during use and at least one set of spare stopper rod holders 100. Among them, the stopper rod holders 100 of the stopper rod bodies 101 that need to be replaced, the self-locking limit platform 107 on the lifting sleeve 106 is in a locked state with the self-locking mechanism 402 in the working state. Figure 3 As shown. The self-locking mechanism 402 is opened by the lifting mechanism 410. When the self-locking mechanism 402 is opened, the self-locking mechanism 402 rises and pushes the lifting sleeve 106 upward. At this time, the threaded section of the lifting sleeve 106 contacts the lifting rod 202, the first driving mechanism 201 is turned on, and the lifting rod 202 cooperates with the threaded section, so that the lifting sleeve 106 drives the stopper rod bracket 100 to rise, so that the stopper rod bracket 100 is separated from the self-locking mechanism 402, that is, the stopper rod bracket 100 is separated from the locking replacement assembly 400.

[0063] At the same time, the spare stopper rod holder 100 lowers the lifting sleeve 106 to the bottom of the lifting rod 202 through the first driving mechanism 201. The lifting mechanism 410 opens the self-locking mechanism 402, and while the self-locking mechanism 402 opens, the self-locking mechanism 402 rises, and the self-locking limit platform 107 of the lifting sleeve 106 is placed in the self-locking mechanism 402. The lifting mechanism 410 is started again, and the lifting mechanism 410 closes the self-locking mechanism 402 and drives the self-locking mechanism 402 to fall. The lifting sleeve 106 is separated from the lifting rod 202, so that the stopper rod holder 100 is separated from the lifting assembly 200, and the stopper rod holder 100 is combined with the locking replacement assembly 400.

[0064] like Figure 3 and Figure 4 As shown, in an optional embodiment of the present invention, the self-locking mechanism 402 includes a self-locking connecting rod 404, a self-locking release claw 403 and an elastic member 420, wherein the elastic member 420 is installed between the self-locking release claw 403 and is used to open the self-locking release claw 403 in an open state, and the self-locking release claw 403 is hinged on the self-locking connecting rod 404, wherein in a closed state, the self-locking release claw 403 cooperates with the self-locking limit platform 107 to lock, and the self-locking connecting rod 404 is connected to the lifting mechanism 410.

[0065] In this embodiment, two self-locking release claws 403 are included, and an elastic member 420 is connected between the two self-locking release claws 403, wherein the elastic member 420 can be a spring, and a hinge rod is provided on the self-locking connecting rod 404, and the two self-locking release claws 403 are hinged at both ends of the hinge rod.

[0066] Continue to refer Figure 4In one embodiment of the present invention, the locking replacement assembly 400 includes a locking housing 401. Specifically, one end of the locking housing 401 is connected to the self-locking connecting rod 404, and the other end is connected to the lifting mechanism 410. A fine adjustment assembly is arranged in the locking housing 401. When the self-locking mechanism 402 is locked with the lifting sleeve 106, that is, the self-locking release claw 403 is locked with the self-locking limit platform 107, and the lifting mechanism 410 is dropped, the fine adjustment assembly can adjust the distance between the stopper rod body 101 and the steel tapping hole.

[0067] refer to Figure 3 and Figure 4 As shown, in another embodiment of the present invention, the locking replacement assembly 400 includes an installation shell 430 and a sliding roller 405. The locking shell 401 is placed in the installation shell 430. The sliding roller 405 is arranged between the installation shell 430 and the locking shell 401. The sliding roller 405 can make the locking shell 401 and the installation shell 430 in rolling contact.

[0068] Specifically, the lifting mechanism 410 pushes the locking housing 401 upward, thereby pushing the self-locking mechanism 402 upward and opening the self-locking release claw 403. The locking housing 401 is provided with a sliding roller 405. During the process of the locking housing 401 rising, the locking housing 401 moves upward relative to the mounting housing 430, and under the action of the sliding roller 405, the locking housing 401 rolls relative to the mounting housing 430. Similarly, the lifting mechanism 410 drives the locking housing 401 downward, completes the locking of the self-locking release claw 403 with the self-locking limiter 107, and the locking housing 401 moves downward relative to the mounting housing 430, and under the action of the sliding roller 405, the locking housing 401 rolls relative to the mounting housing 430.

[0069] For the fine-tuning assembly of the present invention, the fine-tuning assembly includes a telescopic cylinder 406, a first mounting seat 408 and a second mounting seat 409, the first mounting seat 408 is installed in the cavity of the locking housing 401, the second mounting seat 409 is installed on the mounting housing 430, the cylinder body of the telescopic cylinder 406 is connected to the first mounting seat 408, and the telescopic rod 407 of the telescopic cylinder 406 is connected to the second mounting seat 409. Under the push of the telescopic rod 407 of the telescopic cylinder 406, the locking housing 401 moves relative to the mounting housing 430, and is relatively rolling. For example, the locking housing 401 includes a back plate, a sliding roller 405 is arranged between the back plate and the mounting housing 430, and the first mounting seat 408 is installed on the back plate. A limited opening is opened on one side of the back plate close to the lifting mechanism 410, and the second mounting seat 409 passes through the limited opening and is connected to the telescopic rod 407. The height of the limited opening limits the moving distance of the locking housing 401 and the mounting housing 430. This also limits the limit of the fine-tuning assembly in adjusting the distance between the stopper rod body 101 and the steel tapping hole.

[0070] In some embodiments of the present invention, the mounting shell 430 is mounted on the working box body 500 of the tundish.

[0071] like Figure 5 As shown, in an optional embodiment of the present invention, the stopper rod replacement device further includes a rotating assembly 300, which is installed between the lifting assembly 200 and the locking replacement assembly 400. The rotating assembly 300 can rotate the lifting assembly 200 and the stopper rod support 100 relative to the locking replacement assembly 400. It is convenient to adjust the angle of the stopper rod to be replaced in the lifting assembly 200. The rotating assembly 300 allows the stopper rod to be transplanted to the outside of the tundish, improves the working environment of manually replacing the stopper rod, and realizes online baking of the stopper rod.

[0072] Specifically, in other optional embodiments of the present invention, the rotating assembly 300 includes a second driving mechanism 303 and a transmission mechanism, the active member of the transmission mechanism is installed on the second driving mechanism 303, and the driven member of the transmission mechanism is installed on the lifting assembly 200. The second driving mechanism 303 drives the transmission mechanism to drive the lifting assembly 200 and the stopper rod support 100 to rotate.

[0073] For example, the transmission mechanism can be a transmission structure such as a gear transmission or a belt transmission. Therefore, the active member can be a rotating gear 301, the driven member can be a driving gear 302, and the second driving mechanism 303 can be a reducer. The reducer drives the rotating gear 301 to rotate, and the rotating gear 301 is meshed with the driving gear 302, thereby driving the driving gear 302 to rotate, and further driving the lifting assembly 200 to rotate. The lifting assembly 200 drives the stopper rod support 100 to rotate to achieve angle adjustment. In another optional embodiment of the present invention, the rotating assembly 300 also includes an outer sleeve 304 and an inner sleeve 305, the inner sleeve 305 is connected to the outer sleeve 304, the second driving mechanism 303 is connected to the outer sleeve 304, one end of the lifting assembly 200 is placed between the outer sleeve 304 and the inner sleeve 305, and the lifting assembly 200 can rotate relative to the outer sleeve 304 and the inner sleeve 305. Among them, the self-locking mechanism 402 is placed in the inner sleeve 305, and can be lifted and dropped relative to the inner sleeve 305.

[0074] Further, the driven member of the transmission mechanism is connected to the lifting sleeve 203 of the lifting assembly 200, and the second driving mechanism 303 is connected to the outer sleeve 304 and the inner sleeve 305, and one end of the lifting sleeve 203 is between the outer sleeve 304 and the inner sleeve 305. The lifting sleeve 203 rotates relative to the outer sleeve 304 and the inner sleeve 305. For example, a bearing is provided between the lifting sleeve 203 and the outer sleeve 304. The self-locking mechanism 402 moves up and down in the inner sleeve 305.

[0075] like Figure 3As shown, in the open state, the lifting mechanism 410 drives the locking housing 401 to rise, thereby driving the self-locking mechanism 402 to rise, and the self-locking release claw 403 of the self-locking mechanism 402 is pushed out of the inner sleeve 305. Under the action of the elastic member 420, the self-locking release claw 403 is opened, and the self-locking limit platform 107 is placed in the self-locking release claw 403. The lifting mechanism 410 is started again, driving the locking housing 401 to descend, thereby driving the self-locking mechanism 402 to descend, and the self-locking release claw 403 is pulled back into the inner sleeve 305. The self-locking release claw 403 is closed to complete the locking of the self-locking release claw 403 and the self-locking limit platform 107.

[0076] With respect to the rotating assembly 300 , when the self-locking release claw 403 is locked with the self-locking limit platform 107 , the rotating assembly 300 does not adjust the angle of the stopper rod support 100 .

[0077] like Figure 4 As shown, for the lifting mechanism 410 of the present invention, in an optional embodiment of the present invention, the lifting mechanism 410 includes a gear shaft 411, a toothed disc 412, a mounting seat 414 and a mounting sleeve 413, one end of the gear shaft 411 is placed in the mounting sleeve 413 and can move linearly along the mounting sleeve 413, and the other end is connected to the self-locking mechanism 402, the mounting seat 414 is installed on the outer wall of the mounting sleeve 413, and the toothed disc 412 is hinged on the mounting seat 414. Among them, the toothed disc 412 is meshed with the gear shaft 411, and the toothed disc 412 rotates around the hinge point of the mounting seat 414, so that the toothed disc 412 drives the self-locking mechanism 402 to lift and fall.

[0078] Specifically, teeth that mesh with each other are provided on the gear shaft 411 and the gear disc 412. When the gear disc 412 rotates around the hinge point, it drives the gear shaft 411 to move upward or downward, thereby realizing the lifting and falling of the self-locking mechanism 402. Lifting is the open state of the self-locking mechanism 402, and falling is the closed state of the self-locking mechanism 402. In addition, one end of the gear shaft 411 is connected to the locking housing 401, and the locking housing 401 is connected to the self-locking mechanism 402. The other end of the gear shaft 411 is installed in the installation sleeve 413. The installation sleeve 413 is connected to the installation housing 430, and one end of the mounting seat 414 is installed on the installation sleeve 413, and the other end is hinged to the gear disc 412.

[0079] The stopper rod replacement device provided by the present invention realizes the constant preparation of spare stopper rods by preparing at least two groups of stopper rod replacement devices. The spare stopper rod is suspended to a high place by a lifting assembly to reduce the space occupied. When the stopper rod needs to be replaced, the lifting mechanism is opened to open the self-locking mechanism to lift and remove the damaged stopper rod through the lifting assembly. At the same time, the other group of lifting assemblies drops the spare stopper rod bracket to the lowest point, and the lifting mechanism is opened to open the self-locking mechanism. The self-locking mechanism cooperates with the lifting sleeve of the stopper rod bracket to realize closed locking, so that the spare stopper rod can be operated, and the stopper rod can be quickly replaced. The two groups of stopper rods can be quickly switched without stopping the casting, thereby ensuring the continuous casting of the tundish, improving the casting efficiency, and ensuring the safety of personnel.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stopper rod replacement device, characterized in that: include: A stopper rod bracket, used for mounting the stopper rod body, the stopper rod bracket being capable of adjusting the distance between the stopper rod body and the steel outlet, the stopper rod bracket comprising a lifting sleeve; A lifting assembly, comprising at least two groups, each group of the lifting assembly cooperates with the lifting sleeve to enable the stopper rod support to be lifted and lowered, the lifting assembly comprising a first driving mechanism and a lifting rod, the first driving mechanism drives the lifting rod to rotate, wherein the lifting sleeve is threadedly engaged with the lifting rod; The locking and replacement assembly comprises a lifting mechanism and a self-locking mechanism, wherein the lifting mechanism can switch the self-locking mechanism between an open state and a closed state. In the open state, the self-locking mechanism is disengaged from the lifting sleeve, so that the stopper rod support is matched with the lifting assembly; in the closed state, the self-locking mechanism is locked with the lifting sleeve, so that the stopper rod support is disengaged from the lifting assembly; a rotating assembly, the rotating assembly being installed between the lifting assembly and the locking replacement assembly, the rotating assembly being capable of rotating the lifting assembly and the stopper rod support relative to the locking replacement assembly; Wherein, each group of the lifting components corresponds to a group of the locking and replacement components.

2. The stopper rod replacement device according to claim 1, characterized in that: The lifting sleeve comprises a self-locking limit platform and an inner hole penetrating the lifting sleeve, wherein the inner hole comprises a threaded section and smooth sections disposed above and below the threaded section. Among them, the threaded section cooperates with the lifting rod, and the self-locking limit platform cooperates with the self-locking mechanism to be locked.

3. The stopper rod replacement device according to claim 2, characterized in that: The self-locking mechanism comprises a self-locking connecting rod, a self-locking release claw and an elastic member, wherein the elastic member is installed between the self-locking release claws and is used to open the self-locking release claws in the open state, and the self-locking release claws are hinged on the self-locking connecting rod. Wherein, in the closed state, the self-locking release claw cooperates with the self-locking limit platform to lock, and the self-locking connecting rod is connected to the lifting mechanism.

4. The stopper rod replacement device according to claim 1, characterized in that: The rotating assembly includes a second driving mechanism and a transmission mechanism, wherein the active member of the transmission mechanism is mounted on the second driving mechanism, and the driven member of the transmission mechanism is mounted on the lifting assembly. Wherein, the second driving mechanism drives the transmission mechanism to drive the lifting assembly and the stopper rod support to rotate.

5. The stopper rod replacement device according to claim 4, characterized in that: The rotating assembly further comprises an outer sleeve and an inner sleeve, wherein the inner sleeve is connected to the outer sleeve, the second driving mechanism is connected to the outer sleeve, one end of the lifting assembly is disposed between the outer sleeve and the inner sleeve, and the lifting assembly can rotate relative to the outer sleeve and the inner sleeve. Wherein, the self-locking mechanism is placed in the inner sleeve and can be lifted and lowered relative to the inner sleeve.

6. The stopper rod replacement device according to claim 1, characterized in that: The lifting mechanism comprises a gear shaft, a gear disc, a mounting seat and a mounting sleeve, one end of the gear shaft is placed in the mounting sleeve and can move linearly along the mounting sleeve, and the other end is connected to the self-locking mechanism, the mounting seat is mounted on the outer wall of the mounting sleeve, and the gear disc is hinged on the mounting seat. The toothed disc is meshed with the gear shaft, and the toothed disc rotates around the hinge point of the mounting seat, so that the toothed disc drives the self-locking mechanism to rise and fall.

7. The stopper rod replacement device according to claim 1, characterized in that: The locking replacement assembly comprises a locking shell, in which a fine-tuning assembly is arranged. When the self-locking mechanism and the lifting sleeve are locked, the fine-tuning assembly can adjust the distance between the stopper rod body and the steel tapping hole.

8. The stopper rod replacement device according to claim 7, characterized in that: The locking replacement assembly includes a mounting shell and a sliding roller. The locking shell is placed inside the mounting shell. The sliding roller is arranged between the mounting shell and the locking shell. The sliding roller enables the locking shell and the mounting shell to make rolling contact.

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