Electric furnace tapping hole locking device and electric furnace

Abstract

The invention relates to the technical field of metal smelting, and discloses an electric furnace tapping hole locking device and an electric furnace. The electric furnace tapping hole locking device comprises a rotating shaft, a lifting mechanism arranged in the axial direction of the rotating shaft, an elastic assembly arranged at the end, close to the lifting mechanism, of the rotating shaft, a rotating mechanism connected to one side of the rotating shaft and a tray assembly; the tray assembly comprises a tray. When the locking device for the tapping hole of the electric furnace works, the lifting mechanism applies acting force to the rotating shaft, so that the rotating shaft moves downwards, and the elastic assembly is in a compressed state. And after the rotating shaft stops moving downwards, the tray is driven by the rotating mechanism to rotate to the position below the tapping hole of the electric furnace, and when the lifting mechanism retracts to apply acting force to the rotating shaft, the tray is driven by the elastic assembly to move upwards and press the plugging component. By means of the scheme, the tray can be tightly attached to the plugging component arranged at the tapping hole of the electric furnace, and the safety and reliability of operation of the electric furnace are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal smelting, and particularly to a locking device for an electric furnace tapping hole and an electric furnace. Background Art

[0002] As an important part of the modern steel industry, electric furnaces are widely used in the steelmaking field due to their high efficiency, flexibility, and low carbon characteristics.

[0003] During smelting, the eccentric bottom tapping hole of the electric furnace is blocked by a plugging component supported by refractory materials, and the plugging component is held by a bottom tray. Under the action of external vibration, a gap is generated between the bottom tray and the plugging component, and at the same time, the refractory materials will also become loose. During the metal smelting process, the molten steel in the eccentric electric furnace will flow out along the gap, resulting in equipment burnout, the shutdown of the electric furnace, and losses of molten steel and energy consumption. Summary of the Invention

[0004] In view of this, the present invention provides a locking device for an electric furnace tapping hole and an electric furnace, which solves the problem that the fit between the bottom tray of the eccentric electric furnace and the plugging component for plugging the tapping hole is not tight, and it is easy to generate gaps or even loosen under external vibration, resulting in the molten steel in the electric furnace flowing out along the gap, causing equipment burnout, as well as losses of molten steel and energy consumption.

[0005] On the one hand, an embodiment of the present invention provides a locking device for an electric furnace tapping hole, including: A rotating shaft; A lifting mechanism arranged along the axial direction of the rotating shaft, and the lifting mechanism is used to apply a force to the rotating shaft to make the rotating shaft move downward; An elastic component arranged at one end of the rotating shaft close to the lifting mechanism, and the elastic component is used to be in a compressed state when the lifting mechanism applies a force to the rotating shaft; A rotating mechanism connected to one side of the rotating shaft, and the rotating mechanism is used to drive the rotating shaft to rotate; A tray component connected to one side of the rotating shaft, and the tray component includes a tray. The tray is used to rotate below the tapping hole of the electric furnace under the drive of the rotating mechanism, and when the lifting mechanism withdraws the force applied to the rotating shaft, under the drive of the elastic component, it presses upward on the plugging component arranged at the tapping hole of the electric furnace.

[0006] In some embodiments, the tray includes a tray body and a convex platform arranged on one side of the tray body, and the convex platform is arranged corresponding to the plugging component.

[0007] In some embodiments, the tapping hole locking device of the electric furnace further includes: a pressing component and a first fixing bracket. Among them, the pressing component, the elastic component, and the first fixing bracket are sequentially arranged on the rotating shaft along the direction away from the lifting mechanism. The elastic component abuts against the pressing component and the first fixing bracket respectively. The pressing component is fixedly connected to the rotating shaft. The first fixing bracket is fixed on the side wall of the electric furnace, and the rotating shaft passes through one end of the first fixing bracket away from the side wall of the electric furnace.

[0008] In some embodiments, the pressing component is threadedly connected to the rotating shaft.

[0009] In some embodiments, the elastic component includes at least one set of disc springs.

[0010] In some embodiments, the first fixing bracket includes a first fixing seat and a first engaging portion connected to the first fixing seat. The first fixing seat is connected to the side wall of the electric furnace. One side of the first engaging portion away from the first fixing seat has an arc-shaped groove for passing the rotating shaft.

[0011] In some embodiments, the tapping hole locking device of the electric furnace further includes: A second fixing bracket arranged on the rotating shaft. The second fixing bracket includes a second fixing seat and a second engaging portion connected to the second fixing seat. The second fixing seat is connected to the side wall of the electric furnace. One side of the second engaging portion away from the second fixing seat has an arc-shaped groove for connecting the rotating shaft.

[0012] In some embodiments, the tapping hole locking device of the electric furnace further includes: A fixed shaft ear arranged on one side of the rotating shaft; The rotating mechanism is a rotating oil cylinder. The rotating oil cylinder includes a connecting shaft arranged along its axial direction, and the connecting shaft is hinged to the fixed shaft ear.

[0013] In some embodiments, the tray assembly further includes a tray bracket, and the tray and the rotating shaft are respectively connected to two ends of the tray bracket.

[0014] In some embodiments, the tray bracket includes: A first connecting rod, one end of the first connecting rod is connected to the rotating shaft, and the other end of the first connecting rod is connected to the tray; A second connecting rod, the length of the second connecting rod is less than that of the second connecting rod. One end of the second connecting rod is connected to the rotating shaft, and the other end of the second connecting rod is connected to the first connecting rod. And the first connecting rod, the second connecting rod, and the part of the rotating shaft connected between the first connecting rod and the second connecting rod form a triangle.

[0015] In some embodiments, the fixed trunnion includes: a pin shaft, and a first steel plate and a second steel plate fixedly connected to the rotating shaft. Wherein, the connecting shaft is movably connected between the first steel plate and the second steel plate through the pin shaft, and there is a gap between the connecting shaft and the first steel plate and / or the second steel plate.

[0016] In some embodiments, the lifting mechanism is a single-acting oil cylinder. The single-acting oil cylinder includes a trunnion. The device further includes: A first fixed support and a second fixed support respectively arranged on both sides of the single-acting oil cylinder. The trunnion passes through the first fixed support and the second fixed support respectively, and the first fixed support and the second fixed support are connected to the side wall of the electric furnace; A rotating oil cylinder fixed support, which includes a mounting seat and a connecting plate connected to the mounting seat. The mounting seat is connected to the side wall of the electric furnace, and one side of the connecting plate away from the mounting seat is connected to one end of the rotating mechanism away from the connecting shaft.

[0017] On the other hand, the embodiment of the present invention also provides an electric furnace, including the electric furnace tapping hole locking device described in any one of the above embodiments.

[0018] The present invention has at least the following beneficial effects: The present invention provides an electric furnace tapping hole locking device and an electric furnace. The electric furnace tapping hole locking device includes: a rotating shaft, a lifting mechanism arranged along the axial direction of the rotating shaft, a rotating mechanism connected to one side of the rotating shaft, and a tray assembly connected to one side of the rotating shaft. Among them, the lifting mechanism is used to apply a force to the rotating shaft to make the rotating shaft move downward. Among them, the rotating mechanism is used to drive the rotating shaft to rotate. Among them, the tray assembly includes a tray, and the tray is used to rotate below the tapping hole of the electric furnace under the drive of the rotating mechanism, and when the lifting mechanism releases the force applied to the rotating shaft, it presses upward against the plugging component arranged at the tapping hole of the electric furnace. Through the solution of the present invention, the tray can be closely attached to the plugging component arranged at the tapping hole of the electric furnace. In a vibrating environment, it can avoid the generation of gaps between the tray and the plugging component, and the loosening of the plugging component, improve the operation rate of the electric furnace, and improve the safety and reliability of the operation of the electric furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other embodiments can be obtained according to these drawings.

[0020] Figure 1 It is a schematic structural diagram of an electric furnace tapping hole locking device provided by an embodiment of the present invention; Figure 2Schematic diagram of a first fixing bracket provided by an embodiment of the present invention; Figure 3 Schematic diagram of a fixed shaft ear provided by an embodiment of the present invention.

[0021]

Description of attached drawing reference numerals

[0022] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following further describes the embodiments of the present invention in detail with reference to specific embodiments and the attached drawings.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs; the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For example, the terms "length", "width", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position based on the orientation or position shown in the attached drawings, and are only for convenience of description and cannot be construed as a limitation to the technical solution of the present invention.

[0024] The terms "including" and "having" and any variations thereof in the description, claims and attached drawing descriptions of the present invention are intended to cover non-exclusive inclusion; the terms "first", "second", etc. in the description, claims or attached drawings of the present invention are used to distinguish different objects and are not used to describe a specific order. The meaning of "a plurality" is two or more unless otherwise specifically defined.

[0025] In the description, claims and attached drawing descriptions of the present invention, when an element is referred to as "fixed to" or "mounted on" or "disposed on" or "connected to" another element, it may be directly or indirectly located on the other element. For example, when an element is referred to as "connected to" another element, it may be directly or indirectly connected to the other element.

[0026] The present invention will be described in detail below in conjunction with embodiments and the accompanying drawings.

[0027] The first aspect of the embodiment of the present invention provides a locking device for an electric furnace tapping hole, as Figure 1 shown. The locking device for the electric furnace tapping hole includes: a rotating shaft 1, a lifting mechanism 2 arranged along the axial direction of the rotating shaft 1, an elastic component 6 arranged at one end of the rotating shaft 1 close to the lifting mechanism 2, a rotating mechanism 3 connected to one side of the rotating shaft 1, and a tray assembly 4 connected to one side of the rotating shaft 1. Among them, the lifting mechanism 2 is used to apply a force to the rotating shaft 1 to make the rotating shaft 1 move downward. Among them, the elastic component 6 is used to be in a compressed state when the lifting mechanism applies a force to the rotating shaft. Among them, the rotating mechanism 3 is used to drive the rotating shaft 1 to rotate. Among them, the tray assembly 4 includes a tray 41, and the tray 41 is used to rotate under the drive of the rotating mechanism 3 to the lower part of the electric furnace tapping hole, and when the lifting mechanism 2 withdraws the force applied to the rotating shaft 1, it is driven by the elastic component 6 to press upward against the plugging component arranged at the electric furnace tapping hole.

[0028] Specifically, the electric furnace in the embodiment of the present invention can be an eccentric electric furnace or other electric furnaces, and no specific limitation is made here. The lifting mechanism 2 can be a device that provides linear up-and-down movement, for example, a single-acting oil cylinder, a linear displacement sensor and other devices, and no specific limitation is made here. The rotating mechanism 3 can be a device that provides a rotating function, for example, a rotating oil cylinder, an angular displacement sensor and other devices, and no specific limitation is made here.

[0029] Both the lifting mechanism 2 and the rotating mechanism 3 can be arranged on the side wall of the electric furnace.

[0030] For the locking device for the electric furnace tapping hole provided by the embodiment of the present invention, in the initial position (that is, the position when not working), the tray is located on one side of the electric furnace. In the working position, based on the downward ( Figure 1 the X direction shown in the figure) force applied by the lifting mechanism 2 to the rotating shaft 1, the rotating shaft 1 moves downward and compresses the elastic component 8 downward until the rotating shaft 1 stops moving and the elastic component 8 is in a compressed state. At this time, based on the rotating mechanism 3 driving the rotating shaft 1 to rotate, at this time, the tray assembly 4 arranged on the rotating shaft 1 rotates together. When the tray 41 of the tray assembly 4 rotates to the lower part of the electric furnace tapping hole and the positive projection of the tray 41 along the X direction completely covers the positive projection of the plugging component along the X direction, the rotating mechanism 3 stops rotating. At this time, based on the lifting mechanism 2, the force applied to the rotating shaft 1 can be withdrawn, and the elastic component 8 returns from the compressed state to the initial state. During the process of the elastic component 8 returning from the compressed state to the initial state, it drives the rotating shaft 1 to move upward (that is, the reverse direction of the X direction), and the tray moves upward together with the rotating shaft 1 until the tray presses against the plugging component arranged at the electric furnace tapping hole.

[0031] Through the solution of the present invention, the tray can be closely attached to the plugging component provided at the tapping hole of the electric furnace. In a vibrating environment, it can avoid the generation of gaps between the tray and the plugging component and the loosening of the plugging component, improve the operation rate of the electric furnace, and enhance the safety and reliability of the operation of the electric furnace.

[0032] In some embodiments of the present invention, as Figure 1 shown, the tray 41 of the tray assembly 4 of the tapping hole locking device of the electric furnace may include a tray body 411 and a boss 412 provided on one side of the tray body 411. The boss 412 is correspondingly arranged with the plugging component.

[0033] Through this boss 412, the fitting effect between the tray and the plugging component is further improved, making the tray and the plugging component fit more closely.

[0034] The material of the tray 41 can be a metal material, such as a metal material like stainless steel, thereby improving the strength of the tray and the reliability and operation stability of the entire tapping hole locking device of the electric furnace.

[0035] In some embodiments of the present invention, as Figure 1 shown, the tapping hole locking device of the electric furnace may further include: a pressing component 5 and a first fixing bracket 7. Among them, the pressing component 5, the elastic component 6, and the first fixing bracket 7 are sequentially arranged along the direction away from the lifting mechanism 2. Among them, the elastic component 6 is in contact with the pressing component 5 and the first fixing bracket 7 respectively. The pressing component 5 is fixedly connected to the rotating shaft 1, the first fixing bracket 7 is fixed on the side wall of the electric furnace, and the rotating shaft 1 passes through one end of the first fixing bracket 7 away from the side wall of the electric furnace.

[0036] The pressing component 5 is arranged at one end of the rotating shaft 1 close to the lifting mechanism 2, and its two end faces along the axial direction of the rotating shaft are in contact with the lifting mechanism 2 and the elastic component 6 respectively. Through this pressing component 5, the elastic component 6 can be pressed and the rotating shaft 1 can be protected, reducing the probability of deformation of the rotating shaft 1 and extending the service life of the rotating shaft 1 and the entire tapping hole locking device of the electric furnace.

[0037] The connection method between the pressing component 5 and the rotating shaft 1 can be a detachable connection method, thereby improving the maintainability of the entire tapping hole locking device of the electric furnace. In some examples, the pressing component and the rotating shaft can be connected by threads, but it is not limited thereto, and other detachable connection methods can also be used. In some examples, the pressing component 5 can be a Figure 1 shown pressing block. One end of the pressing block has a groove with an internal thread matching the rotating shaft 1, and the pressing component 5 can be connected to the rotating shaft 1 through this groove.

[0038] The materials of the pressing member 5 and the rotating shaft 1 can be metal materials, such as stainless steel and other metal materials, thereby improving the strength of the pressing member and the rotating shaft, as well as the reliability and operating stability of the entire tapping hole locking device of the electric furnace.

[0039] When the lifting mechanism 2 applies a downward acting force on the elastic component 6, the elastic component 6 will deform, buffering the acting force of the lifting mechanism 2 on the shaft over time, causing the rotating shaft 1 to slowly descend, and further improving the service life of the rotating shaft 1 and the entire tapping hole locking device of the electric furnace.

[0040] In some examples, the elastic component 6 can include one or more sets of disc springs 61. Each set of disc springs 61 can include two disc plates. The end face of the disc plate can be arc-shaped, and the two disc plates can be arranged oppositely to form a set of disc springs 61. The service life of the elastic component 6 can be increased by the disc springs with this structure, and the service life of the rotating shaft 1 and the entire tapping hole locking device of the electric furnace can be further improved.

[0041] On the one hand, the first fixing bracket 7 provides support for the elastic component 6, and on the other hand, it can also properly fix the shaft in the axial and radial directions. Thus, not only the occupied space of the entire tapping hole locking device of the electric furnace is saved, but also the excessive shaking amplitude of the shaft during movement can be avoided, enabling the tray to be accurately positioned on the plugging mechanism.

[0042] In some examples, such as Figure 1 and Figure 2 shown, the first fixing bracket 7 can include a first fixing seat 71 and a first engaging portion 72 connected to the first fixing seat 71. The first fixing seat 71 is connected to the side wall of the electric furnace, and the side of the first engaging portion 72 away from the first fixing seat has an arc-shaped groove 721. This arc-shaped groove 721 can be used to engage with the rotating shaft 1, and the size of the arc-shaped groove 721 corresponds to that of the rotating shaft 1 for passing through the rotating shaft 1.

[0043] The material of the first fixing bracket 7 can be metal materials, such as stainless steel and other metal materials, thereby improving the strength of the first fixing bracket, as well as the reliability and operating stability of the entire tapping hole locking device of the electric furnace.

[0044] In some embodiments of the present invention, such as Figure 1 shown, the tapping hole locking device of the electric furnace can further include: a second fixing bracket 8 provided on the rotating shaft. The second fixing bracket 8 can include a second fixing seat and a second engaging portion connected to the second fixing seat. The second fixing seat is connected to the side wall of the electric furnace, and the side of the second engaging portion away from the second fixing seat has an arc-shaped groove for connecting the rotating shaft.

[0045] Specifically, the size and structure of the second fixing bracket 8 can be the same as those of the first fixing bracket 1. Through the second fixing bracket 8, the movement range of the rotating shaft 1 in its radial direction can be restricted, preventing excessive shaking during the movement of the shaft and enabling the tray to be accurately positioned on the plugging mechanism.

[0046] In some embodiments of the present invention, as Figure 1 shown, the tapping hole locking device of the electric furnace may further include: a fixed shaft ear 9 provided on one side of the rotating shaft 1. The rotating mechanism 3 may be a rotating oil cylinder, and the rotating oil cylinder includes a connecting shaft 31 arranged along its axial direction, and the connecting shaft 31 is hinged to the fixed shaft ear 9.

[0047] Specifically, as Figure 3 shown, the fixed shaft ear 9 may include: a pin shaft 93, a first steel plate 91 and a second steel plate 92 connected to the rotating shaft 1. The connecting shaft 31 is movably connected between the first steel plate 91 and the second steel plate 92 through the pin shaft 93, and there is a gap between the connecting shaft 31 and the first steel plate 91 and / or the second steel plate 92.

[0048] Specifically, through holes for passing the pin shaft 93 are correspondingly provided on the first steel plate 91, the second steel plate 92 and the connecting shaft 31, and the pin shaft 93 passes through the through holes on the first steel plate 91, the connecting shaft 31 and the second steel plate 92 in sequence to hinge the pin shaft 93 to the first steel plate 91 and the second steel plate 92.

[0049] There is a certain gap between the connecting shaft 31 and the first steel plate 91 along the axial direction of the rotating shaft. There is also a certain gap between the connecting shaft 31 and the second steel plate 92 along the axial direction of the rotating shaft. Through the gap between the connecting shaft 31 and the first steel plate 91 and the gap between the connecting shaft 31 and the second steel plate 92, the rotating shaft 1 can affect the rotating mechanism 3 when moving downward with the lifting mechanism 2 or moving upward under the drive of the elastic component 6 to press the plugging component. In some examples, this gap can be greater than 1 cm, for example, 1.5 cm, 2 cm or 2.5 cm, etc., and no specific limitation is made here.

[0050] In some examples, a first positioning pin and a second positioning pin are respectively provided at both ends of the pin shaft to keep the position of the pin shaft fixed. Specifically, the first positioning pin can be arranged at the position of the upper plane of the pin shaft 93 close to the first steel plate 91 (i.e., the plane of the first steel plate 91 facing the lifting mechanism 2), and the second positioning pin can be arranged at the position of the lower plane of the pin shaft 93 close to the second steel plate 92 (i.e., the plane of the second steel plate 92 away from the lifting mechanism 2).

[0051] In some examples, the first steel plate 91 and the second steel plate 92 can be connected to the rotating shaft 1 by welding, thereby improving the connection strength and reliability and making it not easy to crack between the steel plate and the rotating shaft.

[0052] In some embodiments of the present invention, the locking device for the tapping hole of the electric furnace may further include a rotating oil cylinder fixing support 10. The rotating oil cylinder can be connected to the side wall of the electric furnace through the rotating oil cylinder fixing support 10.

[0053] Specifically, the rotating oil cylinder fixing support 10 may include a mounting seat 101 and a connecting plate 102 connected to the mounting seat 101. The mounting seat 101 is connected to the side wall of the electric furnace, and one side of the connecting plate 102 away from the mounting seat 101 is connected to one end of the rotating oil cylinder away from its connecting shaft 31.

[0054] The materials of the mounting seat 101 and the connecting plate 102 may be metal materials, such as metal materials like stainless steel, thereby improving the strength of the rotating oil cylinder fixing support, as well as the reliability and operating stability of the entire locking device for the tapping hole of the electric furnace.

[0055] In some examples, the mounting seat 101 can be connected to the side wall of the electric furnace by welding, thereby improving the strength and reliability of the connection of the rotating oil cylinder fixing support, making it not easy to crack between the rotating oil cylinder fixing support and the side wall of the electric furnace, and ensuring that the rotating oil cylinder can operate stably for a long time.

[0056] In some examples, the connecting plate 102 and one end of the rotating oil cylinder away from its connecting shaft 31 can be connected by a pin shaft, thereby improving the maintainability of the equipment.

[0057] In some embodiments of the present invention, as Figure 1 shown, the tray assembly 41 may further include a tray support 42, and the tray 41 and the rotating shaft 1 are respectively connected to both ends of the tray support 42.

[0058] Specifically, as Figure 1 shown, the tray support 42 may include: a first connecting rod 421 and a second connecting rod 422. Wherein, one end of the first connecting rod 421 is connected to the rotating shaft 1, and the other end of the first connecting rod 421 is connected to the tray 41.

[0059] Wherein, the length of the second connecting rod 422 is less than that of the second connecting rod 421. One end of the second connecting rod 422 is connected to the rotating shaft 1, and the other end of the second connecting rod 422 is connected to the first connecting rod 421. And the first connecting rod 421, the second connecting rod 422 and the part of the rotating shaft connected between the first connecting rod 421 and the second connecting rod 422 form a triangle, thereby improving the stability of the connection between the tray support 42 and the rotating shaft 1.

[0060] In some examples, the materials of the first connecting rod 421 and the second connecting rod 422 may be metal materials, such as metal materials like stainless steel, thereby improving the strength of the tray support, as well as the reliability and operating stability of the entire locking device for the tapping hole of the electric furnace.

[0061] In some examples, the tray bracket 42 and the rotating shaft 1 can be connected by welding, thereby further improving the connection stability between the tray bracket 42 and the rotating shaft 1, and enhancing the operation stability and reliability of the tapping hole locking device of the electric furnace.

[0062] In some examples, the first connecting rod 421 may include a first connecting portion and a second connecting portion connected end to end. One end of the first connecting portion away from the second connecting portion is connected to the rotating shaft 1, and one end of the second connecting portion away from the first connecting portion is connected to the tray.

[0063] In some examples, there may be a certain angle between the first connecting portion and the second connecting portion of the first connecting rod 421, thereby reducing the rotation range of the rotating oil cylinder and saving the rotation space.

[0064] Specifically, the angle between the first connecting portion and the second connecting portion may be greater than 90° and less than 180°. For example, the angle between the first connecting portion and the second connecting portion may be 100°, 110°, 120°, 130°, 140°, 150° or 160°.

[0065] In some examples, the second connecting rod 422 may be bar-shaped and used to assist in supporting the first connecting rod 421.

[0066] In some examples, to improve the connection reliability between the tray bracket 42 and the tray, the tray bracket 42 can be welded to the side of the tray 41 away from the lifting mechanism 2.

[0067] In some embodiments of the present invention, as Figure 1 shown, the lifting mechanism 2 can be a single-acting oil cylinder, and the single-acting oil cylinder can include a trunnion 21. The tapping hole locking device of the electric furnace may further include a first fixed support 11 and a second fixed support 12 disposed on both sides of the single-acting oil cylinder. The trunnion 21 passes through the first fixed support 11 and the second fixed support 12 respectively, and the first fixed support 11 and the second fixed support 12 are connected to the side wall of the electric furnace.

[0068] The following describes the tapping hole locking device of the electric furnace provided by the embodiments of the present invention through specific examples. It should be understood that the following examples are only used to explain the present invention and are not used to limit the present invention.

[0069] As Figure 1 shown, the tapping hole locking device of the electric furnace includes a rotating shaft 1, a lifting mechanism 2 disposed above the rotating shaft 1, a pressing member 5, an elastic component 6, a first fixed bracket 7, a second fixed bracket 8, a fixed shaft ear 9 sequentially arranged along the axial direction of the rotating shaft 1, a selection mechanism 3 connected to the rotating shaft 1 through the fixed shaft ear 9, and a tray assembly 4 disposed below the rotating mechanism 3 and connected to the rotating shaft 1.

[0070] Among them, the lifting mechanism 2 is a single-acting oil cylinder, and the rotating mechanism 3 is a rotating oil cylinder. The lifting mechanism 2 is connected to the side wall of the electric furnace through the first fixed support 11 and the second fixed support 12. The rotating mechanism 3 is connected to the side wall of the electric furnace through the rotating oil cylinder fixed support 10.

[0071] Among them, the elastic component 6 includes 3 groups of disc springs stacked in sequence along the axial direction of the rotating shaft.

[0072] Among them, the tray assembly 4 includes a tray 41 and a tray support 42. The tray 41 is connected to the rotating shaft 1 through the tray support 42. The tray 41 includes a tray body 411 and a boss 412 provided on one side of the tray body 411, and the boss 412 is arranged corresponding to the plugging component. The tray support 42 includes a first connecting rod 421 and a second connecting rod 422. The length of the second connecting rod 422 is less than that of the second connecting rod 421. The part where the first connecting rod 421, the second connecting rod 422 and the rotating shaft 1 are interconnected forms a triangle. The first connecting rod 421 includes a first connecting portion and a second connecting portion connected end to end, and there is an included angle of 120° between the first connecting portion and the second connecting portion.

[0073] For the above-mentioned electric furnace tapping hole locking device, in the initial position, the tray assembly 4 is located on one side of the electric furnace, and the rotating shaft 1 compresses the 3 groups of stacked disc springs under the action of the lifting mechanism 2. During operation, based on the lifting mechanism 2 applying a downward force to the rotating shaft 1, the rotating shaft 6 drives the tray 41 and the tray support 42 of the tray assembly 4 to move downward, and the 3 groups of disc springs are compressed downward under the action of the force applied by the lifting mechanism 2. When the rotating mechanism 3 drives the rotating shaft 1 and the tray 41 to rotate to below the tapping hole, the lifting mechanism 2 releases the piston rod, and the 3 groups of compressed disc springs reset. During the reset process of the 3 groups of disc springs, the rotating shaft 6 is driven to move upward, and the tray 10 moves upward with the rotating shaft 6 to tightly press the plugging component for plugging the tapping hole. Through the above-mentioned electric furnace tapping hole locking device, the tray can be closely attached to the plugging component provided at the tapping hole of the electric furnace. In a vibrating environment, it can avoid the generation of gaps between the tray and the plugging component and the loosening of the plugging component, improve the operation rate of the electric furnace, and improve the safety and reliability of the operation of the electric furnace.

[0074] Based on the same inventive concept, according to another aspect of the present invention, an embodiment of the present invention further provides an electric furnace, including the electric furnace tapping hole locking device described in any one of the above embodiments.

[0075] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0076] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A locking device for an electric furnace tapping port, characterized in that: include: Rotating shaft; a lifting mechanism arranged along the axial direction of the rotating shaft, the lifting mechanism being used to apply a force to the rotating shaft so as to make the rotating shaft move downward; An elastic component disposed at one end of the rotating shaft close to the lifting mechanism, wherein the elastic component is in a compressed state when the lifting mechanism applies a force to the rotating shaft; A rotating mechanism connected to one side of the rotating shaft, the rotating mechanism being used to drive the rotating shaft to rotate; A tray assembly connected to one side of the rotating shaft includes a tray, and the tray is used to rotate to the bottom of the electric furnace outlet under the drive of the rotating mechanism, and when the lifting mechanism retracts the force applied to the rotating shaft, the tray is driven by the elastic component to press upwards the blocking component arranged at the electric furnace outlet.

2. The electric furnace tapping port locking device according to claim 1, characterized in that: The tray comprises a tray body and a boss arranged on one side of the tray body, and the boss is arranged corresponding to the blocking component.

3. The electric furnace tapping port locking device according to claim 1, characterized in that: Also includes: A clamping component and a first fixed bracket, wherein the clamping component, the elastic component and the first fixed bracket are sequentially arranged on the rotating shaft along a direction away from the lifting mechanism, wherein the elastic component abuts against the clamping component and the first fixed bracket respectively, the clamping component is fixedly connected to the rotating shaft, the first fixed bracket is fixed on the side wall of the electric furnace, and the rotating shaft passes through an end of the first fixed bracket away from the side wall of the electric furnace.

4. The electric furnace tapping port locking device according to claim 3, characterized in that: The pressing component is connected to the rotating shaft via threads; The elastic component includes at least one set of disc springs; The first fixing bracket includes a first fixing seat and a first clamping portion connected to the first fixing seat, the first fixing seat is connected to the side wall of the electric furnace, and the first clamping portion has an arc-shaped groove on a side away from the first fixing seat, and the arc-shaped groove is used to pass the rotating shaft.

5. The electric furnace tapping port locking device according to claim 1, characterized in that: Also includes: A second fixed bracket is arranged on the rotating shaft, and the second fixed bracket includes a second fixed seat and a second clamping portion connected to the second fixed seat, the second fixed seat is connected to the side wall of the electric furnace, and the second clamping portion has an arc groove connected to the rotating shaft on a side away from the second fixed seat.

6. The electric furnace tapping port locking device according to claim 1, characterized in that: Also includes: A fixed shaft ear disposed on one side of the rotating shaft; The rotating mechanism is a rotating oil cylinder, and the rotating oil cylinder comprises a connecting shaft arranged along its axial direction, and the connecting shaft is hinged to the fixed shaft ear.

7. The electric furnace tapping port locking device according to claim 1, characterized in that: The tray assembly also includes a tray bracket, and the tray and the rotating shaft are respectively connected to two ends of the tray bracket.

8. The electric furnace tapping port locking device according to claim 7, characterized in that: Tray stand includes: a first connecting rod, one end of which is connected to the rotating shaft, and the other end of which is connected to the tray; A second connecting rod, the length of the second connecting rod is smaller than that of the second connecting rod, one end of the second connecting rod is connected to the rotating shaft, the other end of the second connecting rod is connected to the first connecting rod, and the first connecting rod, the second connecting rod and the rotating shaft part connected between the first connecting rod and the second connecting rod form a triangle.

9. The electric furnace tapping port locking device according to claim 6, characterized in that: The fixed shaft ear comprises: a pin shaft, a first steel plate and a second steel plate fixedly connected to the rotating shaft, wherein the connecting shaft is movably connected between the first steel plate and the second steel plate through the pin shaft, and there is a gap between the connecting shaft and the first steel plate and / or the second steel plate; Alternatively, the lifting mechanism is a single-acting oil cylinder, the single-acting oil cylinder includes a trunnion, and the electric furnace tapping port locking device further includes: A first fixed support and a second fixed support are respectively arranged on both sides of the single-acting oil cylinder, the ear shaft passes through the first fixed support and the second fixed support respectively, and the first fixed support and the second fixed support are connected to the side wall of the electric furnace; The rotating cylinder fixed support comprises a mounting seat and a connecting plate connected to the mounting seat, the mounting seat is connected to the side wall of the electric furnace, and the side of the connecting plate away from the mounting seat is connected to an end of the rotating mechanism away from the connecting shaft.

10. An electric furnace, characterized in that: It comprises the electric furnace tapping port locking device as described in any one of claims 1 to 9.

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