Electric furnace cover unscrewing device

Abstract

The utility model discloses an electric furnace cover unscrewing device which is characterized in that an electric furnace is arranged on a furnace frame platform, and the device comprises a guide rail which is arranged on the furnace frame platform and is in a circular arc shape; the supporting seat is rotatably arranged on the furnace frame platform; the guide wheel component is arranged at the bottom of the supporting seat, the guide wheel component comprises a single-flange wheel formed by a wheel and a flange, a bearing and a wheel shaft, the wheel shaft is sleeved with the bearing, the wheel is sleeved with the bearing, the flange is close to the inner side wall of the guide rail, the inner side wall of the guide rail is the side wall, away from the electric furnace, of the guide rail, and a gap of 0.45-0.55 mm is formed between the flange and the wheel shaft; and the furnace cover lifting component comprises a supporting pipe frame and a lifting piece, the supporting pipe frame is arranged on the supporting base, and the lifting piece is arranged on the supporting pipe frame and connected with the furnace cover to lift the furnace cover. According to the electric furnace cover unscrewing device, the phenomenon that the wheels of the electric furnace cover unscrewing device are frequently jammed, shaken and crawl is avoided.

Description

Technical Field

[0001] The utility model relates to the field of electric furnaces, in particular to a device for unscrewing a furnace cover of an electric furnace. Background Art

[0002] In the prior art, the furnace body and the furnace cover unscrewing device of the electric furnace are both arranged on the furnace frame platform. In the vanadium alloy smelting production process, during smelting, the electrode is inserted into the hole on the furnace cover of the electric furnace through the electrode installation device and penetrates into the electric furnace. After the smelting is completed, the electrode installation device lifts the electrode, and the furnace cover unscrewing device lifts the furnace cover at the same time, but at this time, part of the electrode still penetrates the hole of the lifted furnace cover; the furnace cover unscrewing device rotates through the support seat arranged on the furnace frame platform, so that the guide wheel arranged at the bottom of the support seat rotates along the guide rail to rotate the furnace cover open, but because the electrode installation device is arranged on the support seat, when the furnace cover unscrewing device opens or closes the furnace cover, the electrode installation device will also rotate simultaneously with the furnace cover unscrewing device.

[0003] However, due to the high temperature environment near the electric furnace, the lubrication effect of the guide wheel bearing of the furnace cover unscrewing device is poor; in addition, the guide wheel is subjected to the axial centripetal force pointing from the guide rail to the rotation center point during the rotation process, and the guide wheel is also subjected to the vertical downward gravity brought by the entire device and the furnace cover. Therefore, under the above high temperature environment and the action of axial centripetal force and vertical gravity, the guide wheel frequently gets stuck, shakes and creeps during the rotation along the guide rail, which causes the guide wheel to interfere with and collide with the electrode during the rotation process and break, seriously affecting the production efficiency and increasing the production cost.

[0004] Based on this, the existing technology still needs to be improved. Utility Model Content

[0005] In order to solve the above technical problems, an embodiment of the utility model proposes an electric furnace cover unscrewing device, which can solve the problem in the prior art that the guide wheel frequently gets stuck, shakes and creeps under the action of high temperature environment and axial centrifugal force and vertical gravity, causing interference and breakage between the electric furnace cover and the electrode.

[0006] The utility model discloses a device for unscrewing an electric furnace cover. The electric furnace is arranged on a furnace frame platform. The device for unscrewing an electric furnace cover comprises:

[0007] A guide rail, wherein the guide rail is arranged on the furnace frame platform and is in an arc shape;

[0008] A support seat, the support seat is rotatably arranged on the furnace platform;

[0009] A guide wheel component, the guide wheel component is arranged at the bottom of the support seat, the guide wheel component comprises a single flange wheel formed with a wheel and a flange, a bearing and a wheel axle, the bearing sleeve is arranged on the wheel axle, the wheel is arranged outside the bearing sleeve, the flange is close to the inner side wall of the guide rail, the inner side wall of the guide rail is the side wall of the guide rail away from the electric furnace, a gap of 0.45 to 0.55 mm is arranged between the flange and the wheel axle, and the wheel is configured to rotate and move in the guide rail when the support seat rotates;

[0010] A furnace cover lifting component comprises a supporting pipe rack and a lifting member, wherein the supporting pipe rack is arranged on the supporting seat, the lifting member is arranged on the supporting pipe rack, and the lifting member is connected to the furnace cover to lift the furnace cover.

[0011] According to one embodiment of the utility model, the guide wheel component also includes an n-type bracket, a positioning ring and a distance ring, the upper part of the n-type bracket is connected to the bottom of the support seat, the wheel axle is passed through and fixed on the two side plates of the n-type bracket, the rib is arranged between one side plate of the n-type bracket and one side surface of the inner ring of the bearing, the distance ring is sleeved on the wheel axle and arranged between the other side surface of the inner ring of the bearing and the other side plate of the n-type bracket, the positioning ring is sleeved on the distance ring, and the positioning ring is fixed on the wheel of the single-rib wheel and abuts against the outer ring of the bearing.

[0012] According to one embodiment of the utility model, the supporting pipe rack includes a vertical pipe, a horizontal pipe and an inclined pipe, the vertical pipe is fixed on the supporting seat, the central axis of the horizontal pipe and the vertical line of the supporting seat relative to the grate platform are perpendicular to each other, the two ends of the vertical pipe are respectively connected to the horizontal pipe and the inclined pipe, the side of the blind end of the inclined pipe is connected to the side of the horizontal pipe, the inclined pipe is located below the horizontal pipe, the vertical pipe is provided with a cooling medium inlet or outlet, and the inclined pipe is provided with a cooling medium outflow or inlet.

[0013] According to an embodiment of the utility model, a connecting plate is provided in the gap between the horizontal tube and the inclined tube.

[0014] According to an embodiment of the utility model, the length of the horizontal tube is greater than that of the inclined tube, and a reinforcing rib plate is provided below the horizontal tube along the extension direction of the blind end of the inclined tube.

[0015] According to an embodiment of the utility model, the lifting member includes two lifting chains, one of which is arranged at the end of the blind end of the horizontal pipe, and the other lifting chain is arranged between the blind end of the inclined pipe and the vertical pipe.

[0016] According to one embodiment of the utility model, an embedded sealing tube is arranged between the horizontal tube and the inclined tube, the outer diameter of the embedded sealing tube is smaller than the inner diameter of the horizontal tube and the inclined tube, the embedded sealing tube is close to the blind end of the inclined tube, the embedded sealing tube passes through the interior of the horizontal tube and the inclined tube, openings are arranged on the tube wall of the embedded sealing tube, and the openings are respectively arranged inside the horizontal tube and the inclined tube.

[0017] According to an embodiment of the present invention, the angle between the central axis of the embedded sealing tube and the central axis of the inclined tube is 80-90°.

[0018] According to one embodiment of the utility model, the embedded sealing tube is located between the two lifting chains. When the center point of the embedded sealing tube and the center point of the line connecting the two lifting chains are on the same straight line, the distance between the two is 290 to 310 mm, and the center point of the embedded sealing tube is close to the blind end of the horizontal tube.

[0019] According to an embodiment of the utility model, an adjustment pad and a vertical adjustment plate are arranged between the tilting tube and the support seat, the adjustment pad is detachably arranged above the vertical adjustment plate, and the vertical adjustment plate is arranged on the support seat.

[0020] By adopting the above technical solution, the utility model has at least the following beneficial effects:

[0021] The electric furnace cover swinging device provided by the utility model replaces the guide wheel without a flange wheel by using a single flange wheel with a wheel and a flange integrally formed, and sets a gap between the flange of the single flange wheel and the wheel axle, so that the wheel and the flange of the single flange wheel can rotate around the wheel axle at the same time, so that the axial centripetal force directed from the guide rail to the rotation center point received by the wheel during the rotation process can be transmitted on the rotating sliding surface of the flange around the wheel axle, so as to disperse and reduce the axial centripetal force, thereby reducing the high radial axial centripetal force load borne by the wheel during the rotation movement, and effectively avoids the phenomenon of frequent jamming, shaking and creeping of the wheel under the action of high temperature environment and axial centripetal force and vertical gravity, so as to effectively avoid the interference and breakage of the furnace cover and the electrode during the opening or closing process of the electric furnace cover, and realizes that the guide wheel component can withstand a large radial load and is suitable for use in a high temperature environment, thereby greatly improving the efficiency of vanadium alloy smelting production and greatly reducing the smelting production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a side structural schematic diagram of an electric furnace cover unscrewing device disclosed in one embodiment of the utility model;

[0024] Figure 2 It is a schematic cross-sectional structure diagram of a guide wheel component in an electric furnace cover unscrewing device disclosed in one embodiment of the utility model;

[0025] Figure 3 for Figure 1 Schematic diagram of the enlarged structure of local area A. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0027] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0028] In the following description, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0029] like Figure 1-3 As shown, an embodiment of the utility model discloses a device for unscrewing an electric furnace cover. The electric furnace (not shown in the drawings) is arranged on a furnace frame platform 10. The device for unscrewing an electric furnace cover comprises:

[0030] A guide rail (not shown in the drawings), which is arranged on the furnace platform 10 and is in an arc shape;

[0031] A support base 20, the support base 20 is rotatably disposed on the furnace rack platform 10;

[0032] The guide wheel component 30 is arranged at the bottom of the support seat 20. The guide wheel component 30 includes a single flange wheel formed by a wheel 31 and a flange 34, a bearing 32 and a wheel axle 33. The bearing 32 is sleeved on the wheel axle 33. The wheel 31 is arranged outside the bearing 32. The flange 34 is close to the inner side wall of the guide rail. The inner side wall of the guide rail is the side wall of the guide rail away from the electric furnace. A gap of 0.45 to 0.55 mm is set between the flange 34 and the wheel axle 33. When the support seat 20 rotates, the wheel 31 of the single flange wheel is configured to rotate and move in the guide rail.

[0033] The furnace cover lifting component 40 includes a supporting pipe rack 41 and a lifting member 42. The supporting pipe rack 41 is arranged on the supporting seat 20, and the lifting member 42 is arranged on the supporting pipe rack 41. The lifting member 42 is connected to the furnace cover to lift the furnace cover.

[0034] In some embodiments, a rotating shaft 90 and a rotating bearing 91 are provided between the support base 20 and the grate platform 10 to realize the rotation of the support base 20 on the grate platform 10, and the rotation of the support base 20 can be driven by a hydraulic cylinder.

[0035] In the prior art, the guide wheel of the furnace cover unscrewing device of the electric furnace adopts a flangeless wheel, which is sleeved on the outer ring of the bearing, and the bearing is sleeved on the wheel shaft, and the distance rings are arranged on both sides of the inner ring of the bearing, and the two sides of the flangeless wheel are connected with the positioning rings, and the positioning rings are sleeved on the distance rings and abut against the outer ring of the bearing. The guide wheel of this structure, because the distance rings arranged on both sides of the inner ring of the bearing limit the position of the inner ring of the bearing and it will not rotate with the wheel shaft, when the guide wheel is subjected to the axial centripetal force from the guide rail to the rotation center point during the rotation process, the flangeless wheel will be subjected to a larger axial centripetal force and deviate to the rotation center, so that the flangeless wheel is subjected to a strong extrusion force biased toward the rotation center, and the guide wheel frequently gets stuck, shakes and creeps, which causes the furnace cover and the electrode to interfere and collide during the rotation of the guide wheel and break.

[0036] The cam 34 is used to move the wheel 31 to the left of the wheel 31 and the cam 34 is used to move the wheel 31 to the right of the wheel 31.

[0037] In the embodiment of the utility model, when lifting the electric furnace cover, the use of the support pipe rack 41 and the lifting member 42 fixed on the support seat 20 can greatly improve the safety and reliability of the electric furnace cover lifting process compared to using a single lifting rope, which is conducive to greatly improving production efficiency.

[0038] In some embodiments, Figure 2 As shown, the guide wheel component also includes an N-type bracket 33, a positioning ring 37 and a distance ring 36. The upper part of the N-type bracket 33 is connected to the bottom of the support seat 20, the wheel axle 33 is passed through and fixed on the two side plates (35, 38) of the N-type bracket 33, the rib 34 is arranged between one side plate 35 of the N-type bracket 33 and one side surface of the inner ring of the bearing 32, the distance ring 36 is sleeved on the wheel axle 33 and arranged between the other side surface of the inner ring of the bearing 32 and the other side plate 38 of the N-type bracket 33, the positioning ring 37 is sleeved on the distance ring 36, and the positioning ring 37 is fixed on the wheel 31 of the single-rib wheel and abuts against the outer ring of the bearing 32.

[0039] In this embodiment, the n-type bracket 33 is provided to facilitate fixing the wheel axle 33, ensuring that the single-flange wheel 31 rotates stably with the wheel axle 33, so that the axial centripetal force directed from the guide rail to the rotation center point during the rotation of the wheel 31 of the single-flange wheel can be stably transmitted on the rotating sliding surface of the flange 34 around the wheel axle 33, thereby dispersing and reducing the axial centripetal force, effectively avoiding the jamming, shaking and creeping of the wheel 31; and it is helpful to reduce the gravity exerted by the entire device and the furnace cover on the guide wheel component 30, thereby improving the stability of the rotational movement of the guide wheel component 30.

[0040] In some embodiments, a gap of 0.20 mm is set between the inner ring of the bearing 32 and the axle 33. The gaps between the rib 34 and one side plate 35 of the n-type bracket and one side surface of the inner ring of the bearing 32 are smaller than the gaps between the distance ring 36 and the other side surface of the inner ring of the bearing 32 and the other side plate 38 of the n-type bracket 33. The wheel 31 can be prevented from moving toward the center of rotation during rotation, which is conducive to ensuring the stability of the rib 34 when rotating with the axle.

[0041] In some embodiments, the support pipe rack 41 includes a vertical pipe 43, a horizontal pipe 44 and an inclined pipe 45. The vertical pipe 43 is fixed on the support seat 20. The central axis of the horizontal pipe 44 is perpendicular to the vertical line of the support seat 20 relative to the grate platform 10. The two ends of the vertical pipe 43 are respectively connected to the horizontal pipe 44 and the inclined pipe 45. The side of the blind end of the inclined pipe 45 is connected to the side of the horizontal pipe 44. The inclined pipe 45 is located below the horizontal pipe 44. A cooling medium inlet or outlet 46 is set on the vertical pipe 43, and a cooling medium outflow or inlet 47 is set on the inclined pipe 45. In this embodiment, since the electric furnace cover swinging device is in a high temperature environment near the electric furnace, and the support pipe rack 41 is used to support the lifting member 42 to lift the furnace cover and is located above the furnace cover, in this embodiment, a cooling medium is introduced into the support pipe rack 41 to cool the support pipe rack 41, thereby ensuring the uniformity of heating of the support pipe rack 41, preventing the support pipe rack 41 from causing cracks in the connection between the pipes and leaking the cooling medium in a high temperature environment (such as leakage due to weld cracks when the pipes are welded to each other), which is beneficial to improving the service life of the support pipe rack 41, ensuring the safety of the furnace cover lifting member 40 when lifting the furnace cover, ensuring the normal progress of smelting, and improving production efficiency.

[0042] In the above embodiment, the vertical tube 43, the horizontal tube 44 and the inclined tube 45 form a triangular support tube rack, which is conducive to improving the stability of the support tube rack 41 when the lifting member 42 lifts the furnace cover, and greatly improves the safety of the furnace cover lifting process. In the above embodiment, it can be understood that when the cooling medium inlet is set on the vertical tube 43, the cooling medium outlet is set on the inclined tube 45; when the cooling medium outlet is set on the vertical tube 43, the cooling medium inlet is set on the inclined tube 45.

[0043] In some embodiments, the cooling medium is cooling water. Using cooling water has the advantages of wide sources, convenient material acquisition and low cost.

[0044] In some embodiments, a connecting plate 50 is provided in the gap between the horizontal tube 44 and the inclined tube 45. By providing the connecting plate 50, the stability of the supporting pipe rack 41 is further improved, the stability of the lifting member when lifting the furnace cover is ensured, and the safety of the furnace cover lifting process is also greatly improved.

[0045] In some embodiments, the length of the horizontal tube 44 is greater than that of the inclined tube 45 , and a reinforcing rib plate 60 is provided below the horizontal tube 44 along the extension direction of the blind end of the inclined tube 45 .

[0046] In the embodiment of the utility model, the pipes near the blind ends of the horizontal pipe 44 and the inclined pipe 45 are located above the electric furnace cover, and the lifting member 42 is located near the blind ends of the horizontal pipe 44 and the inclined pipe 45.

[0047] In the above embodiment, the horizontal tube 44 is located above the inclined tube 45. In order to increase the support of the inclined tube 45 to the horizontal tube 44, the length of the horizontal tube 44 is set to be greater than the inclined tube 45 and along the extension direction of the blind end of the inclined tube 45. A reinforcing rib plate 60 is set below the horizontal tube 44. This is beneficial to improve the stability of the supporting pipe rack 41, ensure the stability of the lifting member 42 when lifting the furnace cover, and greatly improve the safety of the process of lifting the furnace cover.

[0048] In some embodiments, the lifting member 42 includes two lifting chains (48, 49), wherein one lifting chain 49 is disposed at the end of the blind end of the horizontal tube 44, and the other lifting chain 48 is disposed between the blind end of the inclined tube 45 and the vertical tube 43. By disposing two lifting chains, the two lifting chains are respectively connected to the two sides of the center point of the furnace cover, which is beneficial to improving the stability of the furnace cover lifting on the one hand, and on the other hand, one lifting chain is disposed at the end of the blind end of the horizontal tube 44, and the other lifting chain is disposed between the blind end of the inclined tube 45 and the vertical tube 43, which is beneficial to improving the stable support of the two lifting chains by the supporting pipe rack 41.

[0049] In some embodiments, an embedded sealing tube 70 is disposed between the horizontal tube 44 and the inclined tube 45. The outer diameter of the embedded sealing tube 70 is smaller than the inner diameter of the horizontal tube 44 and the inclined tube 45. The embedded sealing tube 70 is close to the blind end of the inclined tube 45. The embedded sealing tube 70 passes through the interior of the horizontal tube 44 and the inclined tube 45. An opening 71 (such as Figure 3 As shown), the openings 71 are respectively arranged inside the horizontal tube 44 and the inclined tube 45.

[0050] In the above embodiment, since the blind end of the inclined tube 45 and the horizontal tube 44 there are far from the fixing point of the vertical tube 43, the blind end of the inclined tube 45 and the horizontal tube 44 there are subjected to large forces during the process of lifting the furnace cover. By arranging the embedded sealing tube 70 near the blind end of the inclined tube 45, the strength of the connection between the horizontal tube 44 and the inclined tube 45 can be improved, and the stiffness of the ribs near the blind end of the horizontal tube 44 and the inclined tube 45 is greatly enhanced, which is conducive to further improving the stability of the supporting pipe rack 41. An embedded sealed tube 70 is provided between the inclined tubes 45, so that the cooling medium in the horizontal tube 44 and the inclined tube 45 can be connected and circulated between the two tubes through the embedded sealed tube 70, and the cooling medium can circulate between the vertical tube 43, the horizontal tube 44 and the inclined tube 45, thereby ensuring the uniformity of heating of the horizontal tube 44 and the inclined tube 45 near the blind end, preventing the connection between the two tubes of the horizontal tube 44 and the inclined tube 45 from cracking due to uneven heating near the blind end, thereby ensuring the normal progress of smelting and being conducive to improving production efficiency.

[0051] In some embodiments, the angle between the central axis of the embedded sealed tube 70 and the central axis of the inclined tube 45 is 80 to 90 degrees. In this embodiment, the upper end of the embedded sealed tube 70 is inclined toward the direction of the vertical tube 43, so that the embedded sealed tube 70 is inclined relative to the vertical tube 43, which can make the cooling medium in the horizontal tube 44 easily flow into the inclined tube 45 under the action of the medium pressure or facilitate the cooling medium in the inclined tube 45 to flow from the horizontal tube to the vertical tube 43 under the medium pressure, ensuring the uniform heating of the support pipe rack 41, preventing the horizontal tube 44 and the inclined tube 45 from cracking at the connection between the two tubes due to uneven heating near the blind end, and causing leakage of the cooling medium, ensuring the normal smelting, and facilitating the improvement of production efficiency; and facilitating the improvement of the strength of the connection between the horizontal tube 44 and the inclined tube 45, greatly strengthening the stiffness of the ribs of the horizontal tube 44 and the inclined tube 45 near the blind end, and facilitating the improvement of the stability of the support pipe rack.

[0052] In some embodiments, the embedded sealing tube 70 is located between the two lifting chains (48, 49), and when the center point of the embedded sealing tube 70 and the center point of the line connecting the two lifting chains (48, 49) are located on the same straight line, the distance between the two is 290-310 mm, and the center point of the embedded sealing tube 70 is close to the blind end of the horizontal tube 44. Since the blind end of the horizontal tube 44 is far from the fixed point of the vertical tube 43, the force near the blind end is greatly increased, so the embedded sealing tube 70 is close to the blind end of the horizontal tube, which can also greatly strengthen the stiffness of the rib plate near the blind end of the horizontal tube and greatly increase the stability of the supporting pipe rack.

[0053] In some embodiments, an adjustment pad 80 and a vertical adjustment plate 81 are provided between the tilt tube 45 and the support seat 20, and the adjustment pad 80 is detachably provided above the vertical adjustment plate 81, and the vertical adjustment plate 81 is provided on the support seat 20. In this embodiment, the adjustment pad 80 and the vertical adjustment plate 81 can, on the one hand, play a role in stably supporting the tilt tube 45, thereby improving the stability of the support tube frame 41; on the other hand, the adjustment pad 80 can be detached from the vertical adjustment plate 81, thereby facilitating the replacement of the adjustment pad 80.

[0054] In summary, the electric furnace cover unscrewing device disclosed in the embodiment of the utility model uses a single flange wheel with a wheel 31 and a flange 34 integrally formed to replace a guide wheel without a flange wheel, and a gap is set between the flange 34 of the single flange wheel and the wheel shaft 33, so that the wheel 31 and the flange 34 of the single flange wheel can rotate around the wheel shaft at the same time, so that the axial centripetal force directed from the guide rail to the rotation center point received by the wheel 31 of the single guide wheel during the rotation process can be transmitted on the rotating sliding surface of the flange 34 around the wheel shaft 33, thereby dispersing and reducing the axial centripetal force. force, thereby reducing the high radial axial centripetal force that the wheel 31 of the single guide wheel bears during the rotational movement, effectively avoiding the frequent jamming, shaking and creeping of the wheel 31 of the single guide wheel under the action of axial centripetal force and vertical gravity in a high temperature environment, thereby effectively avoiding the interference and breakage between the furnace cover and the electrode during the opening or closing process of the electric furnace cover, and realizing that the guide wheel component 30 can withstand a large radial load and is suitable for use in a high temperature environment, which greatly improves the efficiency of vanadium alloy smelting production and greatly reduces the smelting production cost.

[0055] It should be pointed out in particular that the various components or steps in the above-mentioned embodiments can be cross-linked, replaced, added, or deleted with each other. Therefore, the combinations formed by these reasonable arrangements and combinations should also fall within the scope of protection of the present utility model, and the scope of protection of the present utility model should not be limited to the embodiments.

[0056] The above are exemplary embodiments disclosed by the present utility model. The order disclosed in the above embodiments of the present utility model is only for description and does not represent the advantages and disadvantages of the embodiments. However, it should be noted that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope (including claims) disclosed in the embodiments of the present utility model is limited to these examples. Various changes and modifications may be made without departing from the scope defined in the claims. In addition, although the elements disclosed in the embodiments of the present utility model may be described or required in individual form, they may also be understood as multiple unless explicitly limited to the singular.

[0057] Those skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the embodiments of the present invention as described above, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A device for unscrewing an electric furnace cover, characterized in that: The electric furnace is arranged on a furnace frame platform, and the electric furnace cover unscrewing device comprises: A guide rail, wherein the guide rail is arranged on the furnace frame platform and is in an arc shape; A support seat, the support seat is rotatably arranged on the furnace platform; A guide wheel component, the guide wheel component is arranged at the bottom of the support seat, the guide wheel component comprises a single flange wheel formed with a wheel and a flange, a bearing and a wheel axle, the bearing sleeve is arranged on the wheel axle, the wheel is arranged outside the bearing sleeve, the flange is close to the inner side wall of the guide rail, the inner side wall of the guide rail is the side wall of the guide rail away from the electric furnace, a gap of 0.45 to 0.55 mm is arranged between the flange and the wheel axle, and the wheel is configured to rotate and move in the guide rail when the support seat rotates; A furnace cover lifting component comprises a supporting pipe rack and a lifting member, wherein the supporting pipe rack is arranged on the supporting seat, the lifting member is arranged on the supporting pipe rack, and the lifting member is connected to the furnace cover to lift the furnace cover.

2. The electric furnace cover unscrewing device according to claim 1, characterized in that: The guide wheel component also includes an n-type bracket, a positioning ring and a distance ring. The upper part of the n-type bracket is connected to the bottom of the support seat, the wheel axle is passed through and fixed on the two side plates of the n-type bracket, the rib is arranged between one side plate of the n-type bracket and one side surface of the inner ring of the bearing, the distance ring is sleeved on the wheel axle and arranged between the other side surface of the inner ring of the bearing and the other side plate of the n-type bracket, the positioning ring is sleeved on the distance ring, and the positioning ring is fixed on the wheel of the single-rib wheel and abuts against the outer ring of the bearing.

3. The electric furnace cover unscrewing device according to claim 1, characterized in that: The supporting pipe rack includes vertical pipes, horizontal pipes and inclined pipes. The vertical pipes are fixed on the supporting seat. The central axis of the horizontal pipe is perpendicular to the vertical line of the supporting seat relative to the furnace frame platform. The two ends of the vertical pipe are respectively connected to the horizontal pipe and the inclined pipe. The side of the blind end of the inclined pipe is connected to the side of the horizontal pipe. The inclined pipe is located below the horizontal pipe. The vertical pipe is provided with a cooling medium inlet or outlet, and the inclined pipe is provided with a cooling medium outflow or inlet.

4. The electric furnace cover unscrewing device according to claim 3, characterized in that: A connecting plate is provided in the gap between the horizontal tube and the inclined tube.

5. The electric furnace cover unscrewing device according to claim 3, characterized in that: The length of the horizontal tube is greater than that of the inclined tube, and a reinforcing rib plate is arranged below the horizontal tube along the extension direction of the blind end of the inclined tube.

6. The electric furnace cover unscrewing device according to claim 3, characterized in that: The lifting member comprises two lifting chains, one of which is arranged at the end of the blind end of the horizontal pipe, and the other lifting chain is arranged between the blind end of the inclined pipe and the vertical pipe.

7. The electric furnace cover unscrewing device according to claim 6, characterized in that: An embedded sealing tube is arranged between the horizontal tube and the inclined tube, the outer diameter of the embedded sealing tube is smaller than the inner diameter of the horizontal tube and the inclined tube, the embedded sealing tube is close to the blind end of the inclined tube, the embedded sealing tube passes through the interior of the horizontal tube and the inclined tube, and openings are arranged on the tube wall of the embedded sealing tube, and the openings are respectively arranged inside the horizontal tube and the inclined tube.

8. The electric furnace cover unscrewing device according to claim 7, characterized in that: The angle between the central axis of the embedded sealing tube and the central axis of the inclined tube is 80-90°.

9. The electric furnace cover unscrewing device according to claim 7 or 8, characterized in that: The embedded sealing tube is located between the two lifting chains. When the center point of the embedded sealing tube and the center point of the line connecting the two lifting chains are on the same straight line, the distance between the two is 290-310 mm, and the center point of the embedded sealing tube is close to the blind end of the horizontal tube.

10. The electric furnace cover unscrewing device according to claim 3, characterized in that: An adjustment pad and a sag adjustment plate are arranged between the tilting tube and the support seat, the adjustment pad is detachably arranged above the sag adjustment plate, and the sag adjustment plate is arranged on the support seat.

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