Electricity slag furnace furnace head rotation support part and rotary mechanism

Abstract

The present application relates to the field of special metallurgy, and discloses an electric-shock furnace head rotary support part and a rotary mechanism, the electric-shock furnace head rotary support part comprises: an upper flange is fixedly connected to the upper end of a connecting shaft through a locking nut; a thrust ball bearing is fixedly connected to the upper flange through a locking nut; the lower part of the connecting shaft is installed in the thrust ball bearing; a rib plate is uniformly formed on the outer wall of a connecting steel pipe and is used for increasing the strength of the connecting steel pipe; a connecting steel pipe is inserted into and fixedly connected to a connecting hole at the top end of a V-shaped connecting piece, and the lower end surface of the connecting steel pipe is fixedly connected to the upper flange; and the V-shaped connecting piece has two support arm end surfaces fixedly connected to a connecting plate, and the connecting plate is used for connecting a support frame.The present application can improve the rotary efficiency of the electric-shock furnace head, has low maintenance requirements and low cost, and can ensure the convenience and high efficiency of the rotary operation of the furnace head.

Description

Technical Field

[0001] This invention relates to the field of special metallurgical industry, and in particular to an electroslag furnace head rotation support for an electroslag furnace head rotation mechanism, and an electroslag furnace head rotation mechanism having the electroslag furnace head rotation support. Background Technology

[0002] Electroslag remelting (ESR) furnaces are key equipment in the smelting of special steel grades. The steel produced by these furnaces, due to their excellent mechanical properties, is widely used in cutting-edge high-tech industries such as aerospace. The furnace head rotation mechanism is the core component for adjusting the furnace head position. Existing ESR furnace furnace head rotation mechanisms use hydraulic cylinders to drive the furnace head rotation. Specifically, the extension of the hydraulic cylinder drives the furnace head rotation sleeve to rotate, causing the upper and lower furnace legs to be misaligned. This allows the cooled steel ingots to be removed from the crystallizer for subsequent processing.

[0003] The existing hydraulically driven electroslag furnace head rotation mechanism has many technical defects in practical applications: First, the energy transmission efficiency is low. During operation, the hydraulic system suffers from fluid resistance loss and oil leakage, resulting in an overall transmission efficiency lower than that of mechanical transmission, which increases the operating cost of the equipment.

[0004] Second, the maintenance requirements are high and the troubleshooting is difficult. Hydraulic components have strict requirements for manufacturing precision, and oil leakage is a common fault. It not only easily causes environmental pollution, but also poses a fire safety hazard. In addition, professional technicians are required to troubleshoot system faults.

[0005] Third, the working performance is greatly affected by temperature. The viscosity of the hydraulic oil will change with the ambient temperature, which will lead to unstable transmission performance of the system and affect the accuracy of the furnace head rotation.

[0006] Fourth, the equipment investment cost is high. The manufacturing cost of high-precision hydraulic components such as cylinders, pumps, and valves is relatively high, and the initial investment scale of auxiliary components such as power stations and pipelines for hydraulic systems is large.

[0007] Fifth, the transmission ratio accuracy is limited. Due to the compressibility and leakage of hydraulic oil, it is difficult to achieve strict constant transmission ratio control, which cannot meet the requirements of high-precision furnace head rotation operation.

[0008] Currently, the industry has not proposed a mature improvement technology solution to address the defects of the aforementioned hydraulically driven furnace head rotation mechanism. The existing electroslag furnace head rotation operation still generally adopts the hydraulic drive method, which cannot solve the problems of low efficiency, difficult maintenance, and unstable performance of the hydraulically driven rotation mechanism. Summary of the Invention

[0009] The summary of this invention introduces a series of simplified concepts, all of which are simplifications of existing technologies in the field, and will be further explained in detail in the detailed description section. This summary is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0010] The technical problem to be solved by the present invention is to provide a rotary support for the furnace head of an electroslag furnace that can provide high torsional strength and is easy to install.

[0011] Furthermore, based on the aforementioned electroslag furnace head rotation support, this invention also addresses the technical problems of low efficiency, high maintenance requirements, performance affected by temperature, high cost, and limited transmission ratio accuracy of existing electroslag furnace head rotation mechanisms using hydraulic drive, while ensuring the convenience and efficiency of furnace head rotation operation.

[0012] To solve the above-mentioned technical problems, the present invention provides a rotary support for the electroslag furnace head, which is used in the rotary mechanism of the electroslag furnace head, characterized in that it includes: Upper flange, thrust ball bearing, lower flange, lock nut, connecting shaft, stiffening plate, connecting steel pipe, V-shaped connector and connecting plate; The upper flange is fixedly connected to the upper end of the connecting shaft by a lock nut; The thrust ball bearing is fixedly connected to the lower flange by a lock nut; The lower part of the connecting shaft is installed in a thrust ball bearing; Ribs, evenly formed on the outer wall of the connecting steel pipe, are used to increase the strength of the connecting steel pipe; Connect the steel pipe, insert it into and fix the connection hole at the top of the V-shaped connector, and fix the upper flange to the lower end face of the connecting steel pipe. The V-shaped connector has a connecting plate fixed to the end face of its two support arms, and the connecting plate is used to connect the support frame.

[0013] Preferably, the rotating support part of the electroslag furnace head is further improved, and the thrust ball bearing is a double-direction thrust ball bearing, with the lower end of the connecting shaft and the center hole of the support seat having a clearance fit.

[0014] Preferably, the rotary support of the electroslag furnace head is further improved such that the size of the support arm gradually increases from the connection hole toward the direction away from the connection hole.

[0015] The present invention provides a rotating mechanism for an electroslag furnace head, which has the above-mentioned rotating support part for the electroslag furnace head, and further includes: a support base, a drive wheel set, a driven wheel and a support frame; The lower flange of the rotating support of the electroslag furnace head is fixedly connected to the top surface of the support base by bolts, and the connecting plate of the rotating support of the electroslag furnace head is fixedly connected to one side of the support frame by bolts. Both the drive wheel set and the driven wheel are mounted on the other side of the support frame in a straight line arrangement, and the drive wheel set is connected to the motor drive. The drive wheel assembly drives the driven wheel and support frame to rotate around the support base. The driven wheel works with the drive wheel assembly to support and guide the rotation of the furnace head. The support base, drive wheel assembly, and driven wheel together form a horizontal support.

[0016] Preferably, the electroslag furnace head rotation mechanism is further improved, and the drive wheel assembly includes a bearing support, a first sealing assembly, a reducer, and a first end cover; The reducer is connected to the motor drive, the first sealing component is installed in the bearing support, the output end of the reducer is connected to the first sealing component, and the first end cover is closed on the end of the bearing support. The first sealing assembly is used for dynamic sealing between the shaft, wheel, and bearing.

[0017] Preferably, the electroslag furnace head rotation mechanism is further improved by using a planetary gear reducer and a variable frequency motor. The input end of the reducer is connected to the variable frequency motor via a coupling, and the output end of the reducer is connected to the shaft of the first sealing assembly via a spline.

[0018] Preferably, the electroslag furnace head rotation mechanism is further improved, wherein the first sealing assembly includes a rotating shaft, a drive wheel, a deep groove ball bearing, and a seal. The drive wheel is keyed to the middle of the rotating shaft, the deep groove ball bearing is installed in the bearing hole of the bearing support, and the seal is disposed at both ends of the bearing hole.

[0019] Preferably, the electroslag furnace head rotation mechanism is further improved, and the driven wheel includes an upper bearing support, a second sealing assembly, a lower bearing support, and a second end cover; The upper bearing support and the lower bearing support are fixedly connected to form an installation cavity, the second sealing assembly is installed in the installation cavity, and the second end cap is closed on the end of the support. The second sealing assembly is used for dynamic sealing between the shaft, wheel, and bearing.

[0020] Preferably, the electroslag furnace head rotation mechanism is further improved, and the second sealing assembly includes a rotating shaft, a driven wheel, a deep groove ball bearing, and a seal. The driven wheel is keyed to the middle of the rotating shaft, the deep groove ball bearing is installed in the bearing hole in the mounting cavity, and the seal is disposed at both ends of the bearing hole.

[0021] The working principle of the present invention is explained below based on the above technical solution; This invention utilizes a thrust ball bearing, connecting shaft, flange, and V-shaped connector to form a simple, easy-to-install, stable connection and high torsional strength rotary support for the electroslag furnace head. The support frame is fixedly connected to the two arm ends of the V-shaped connector, which forms a stable triangular connection, providing high torsional strength while allowing for quick and easy fixing to the support frame. The V-shaped connector enables lateral installation, which is more convenient than directly fixing the support frame to the top flange of the electroslag furnace head rotary support.

[0022] The electroslag furnace head rotation mechanism of this invention uses a motor reducer as the power source. The rotational power of the motor is transmitted to the rotation support through the drive wheel set, which drives the driven wheel and support frame to rotate around the support base. The thrust ball bearing in the electroslag furnace head rotation support reduces rotational friction. The driven wheel, in conjunction with the drive wheel set, achieves stable support and guidance for the furnace head. The entire mechanism replaces the traditional hydraulic transmission with a purely mechanical transmission method, realizing precise and stable rotation of the furnace head, and thus quickly completing the crucible replacement operation.

[0023] Based on the above technical solution and working principle, the present invention can achieve at least the following technical effects compared with the prior art; (1) Due to the viscous resistance of hydraulic oil and seal leakage, the existing hydraulic drive structure cannot avoid energy loss, which inevitably leads to low transmission efficiency.

[0024] This invention employs a mechanical transmission method using a motor reducer, eliminating the fluid resistance losses and oil leakage problems associated with hydraulic systems. Its energy transfer efficiency is far superior to that of hydraulic transmission. This invention boasts high transmission efficiency and low operating costs.

[0025] (2) Existing hydraulic drive structures have high precision in the manufacture of hydraulic components and complex system pipelines. Troubleshooting oil leakage requires professional technical skills, and the hydraulic spare parts have poor versatility and are difficult to maintain.

[0026] The mechanical transmission components of this invention all adopt standardized structures, have mature maintenance procedures, readily available spare parts, and are free from hydraulic system-specific faults such as oil leakage. Ordinary technicians can complete fault diagnosis, making maintenance convenient and fault diagnosis easy.

[0027] (3) Existing hydraulic drive structures rely on the fluid transmission of hydraulic oil. The viscosity of hydraulic oil changes with temperature, which directly changes the transmission characteristics of the system and makes it impossible to achieve stable performance under temperature changes.

[0028] The working performance of the mechanical transmission component of the present invention is not directly related to temperature, and there is no need to consider the influence of changes in medium viscosity. It can achieve stable rotation under different temperature conditions, and its working performance is stable and unaffected by temperature.

[0029] (4) The high-precision cylinders, pumps, valves and other core components of the existing hydraulic drive structure have high manufacturing costs and require the construction of hydraulic power stations and pipeline systems, resulting in a large initial investment.

[0030] The mechanical components such as motors, reducers, and bearings of this invention are general-purpose standardized products. Their manufacturing costs and initial investment are far lower than those of high-precision hydraulic components and their supporting power stations and pipeline systems. The equipment investment cost is low and the cost-effectiveness is high.

[0031] (5) Due to the compressibility and leakage of hydraulic oil, the existing hydraulic drive structure cannot achieve precise constant transmission ratio control, which makes it difficult to meet the requirements of high-precision furnace head rotation operation.

[0032] The mechanical transmission structure of this invention does not have the problem of medium compressibility, can achieve strict constant transmission ratio control, and has high transmission ratio accuracy, which in turn leads to high furnace head rotation accuracy, meeting the requirements of high-precision operation.

[0033] (6) Existing hydraulic drive structures have low rotation accuracy and slow response speed, making it impossible to accurately control the rotation position of the furnace head, making it difficult to quickly replace the crucible. Furthermore, hydraulic system failures can easily lead to production interruptions and reduce production efficiency.

[0034] The furnace head rotation mechanism of the present invention operates smoothly and responds quickly, enabling rapid adjustment of the furnace head position and improving production efficiency.

[0035] (7) Existing hydraulic drive structures are prone to hydraulic shock during reversing and starting / stopping, and oil leakage can easily cause wear on components, which will shorten the overall service life of the equipment.

[0036] The motor reducer system of this invention can effectively absorb and buffer vibrations and impacts during operation. The thrust ball bearing of the slewing support reduces slewing friction, and the driven wheel provides stable support for the furnace head. It can effectively protect the furnace structure and precision transmission components, ensuring smooth operation and a long service life.

[0037] (8) The parameter adjustment of the existing hydraulic drive structure is affected by the characteristics of hydraulic oil and system leakage, resulting in low control accuracy and difficulty in achieving precise linkage with other control systems.

[0038] The speed, torque and other parameters of the motor reducer of the present invention can be precisely set and adjusted in real time through the control system. It can be linked with other control systems such as current, voltage and molten pool height of the electroslag furnace to realize the automation and intelligence of the electroslag furnace remelting process. Attached Figure Description

[0039] The accompanying drawings are intended to illustrate the general characteristics of the methods, structures, and / or materials used in specific exemplary embodiments of the invention, supplementing the description in the specification. However, the drawings are schematic diagrams not drawn to scale and may not accurately reflect the precise structural or performance characteristics of any of the given embodiments. The drawings should not be construed as limiting or restricting the range of numerical values ​​or properties covered by exemplary embodiments of the invention. The invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0040] Figure 1 This is a schematic diagram of the structure of the rotating support part of the electroslag furnace head of the present invention. Figure 1 .

[0041] Figure 2 This is a schematic diagram of the structure of the rotating support part of the electroslag furnace head of the present invention. Figure 2 .

[0042] Figure 3 This is a schematic diagram of the structure of the rotating support part of the electroslag furnace head of the present invention. Figure 3 .

[0043] Figure 4 This is a schematic diagram of the overall structure of the electroslag furnace head rotation mechanism of the present invention.

[0044] Figure 5 This is a schematic diagram of a preferred embodiment of the drive wheel assembly of the present invention. Figure 1 .

[0045] Figure 6 This is a schematic diagram of a preferred embodiment of the drive wheel assembly of the present invention. Figure 2 .

[0046] Figure 7 This is a schematic diagram of a preferred embodiment of the driven wheel of the present invention. Figure 1 .

[0047] Figure 8 This is a schematic diagram of a preferred embodiment of the driven wheel of the present invention. Figure 2 .

[0048] Explanation of reference numerals in the attached figures: Support 1; Electroslag furnace head rotary support part 2; Drive wheel set 3; Driven wheel 4; Upper flange 21; Thrust ball bearing 22; Lower flange 23; Lock nut 24; Connecting shaft 25; Rib 26; Connecting steel pipe 27; V-shaped connector 28; Connecting plate 29; Bearing support 31; First sealing component 32; Reducer 33; First end cap 34; Upper bearing support 41; Second sealing component 42; Lower bearing support 43; Second end cap 44. Detailed Implementation

[0049] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can fully understand other advantages and technical effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through different specific embodiments, and various details in this specification can also be applied based on different viewpoints, with various modifications or changes made without departing from the overall design concept of the invention. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. The following exemplary embodiments of the present invention can be implemented in many different forms and should not be construed as being limited to the specific embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art. It should be understood that when an element is referred to as "connected" or "combined" to another element, the element can be directly connected or combined to the other element, or there may be intermediate elements. The difference is that when an element is referred to as "directly connected" or "directly combined" to another element, there are no intermediate elements. Throughout the drawings, the same reference numerals always denote the same elements.

[0050] First embodiment; refer to Figure 1 , Figure 2 Combination Figure 3 As shown, the present invention provides a rotary support for an electroslag furnace head, which is used in the rotary mechanism of the electroslag furnace head, comprising: Upper flange 21, thrust ball bearing 22, lower flange 23, lock nut 24, connecting shaft 25, stiffening plate 26, connecting steel pipe 27, V-shaped connector 28, and connecting plate 29; The upper flange 21 is fixedly connected to the upper end of the connecting shaft 25 by a lock nut 24; The thrust ball bearing 22 is fixedly connected to the lower flange 23 by a lock nut 24; The lower part of the connecting shaft 25 is installed in the thrust ball bearing 22; Rib plates 26 are uniformly formed on the outer wall of the connecting steel pipe 27, which are used to increase the strength of the connecting steel pipe 27. A connecting steel pipe 27 is inserted into and fixedly connected to the connecting hole at the top of a V-shaped connector 28, and an upper flange 21 is fixedly connected to the lower end face of the connecting steel pipe 27. V-shaped connector 28, with connecting plate 29 fixed to the end face of its two support arms, the connecting plate 29 being used to connect the support frame 5.

[0051] Among them, the thrust ball bearing 22 is a double-direction thrust ball bearing, and the lower end of the connecting shaft 25 is clearance-fitted with the center hole of the support seat 1.

[0052] Preferably, the size of the support arm gradually increases from the connection hole toward the direction away from the connection hole.

[0053] Second embodiment; refer to Figure 4 As shown, the present invention provides an electroslag furnace head rotation mechanism, which has the electroslag furnace head rotation support part as described in the first embodiment, and further includes: a support base 1, a drive wheel set 3, a driven wheel 4 and a support frame 5; The lower flange 23 of the electroslag furnace head rotary support 2 is fixedly connected to the top surface of the support base 1 by bolts, and the connecting plate 29 of the electroslag furnace head rotary support 2 is fixedly connected to one side of the support frame 5 by bolts. The drive wheel set 3 and the driven wheel 4 are both installed on the other side of the support frame 5 and arranged in a straight line. The drive wheel set 3 is connected to the motor drive. The drive wheel assembly 3 drives the driven wheel 4 and the support frame 5 to rotate around the support base 1. The driven wheel 4, in conjunction with the drive wheel assembly 3, provides support and guidance for the rotation of the furnace head. Among them, the support base 1, the drive wheel set 3 and the driven wheel 4 together form a horizontal support.

[0054] Based on the overall design concept of the second embodiment described above, preferred embodiments of each component of the electroslag furnace head rotation mechanism are provided below.

[0055] Third embodiment; This embodiment provides a preferred implementation of the support base. The support base is the basic support component of the overall mechanism. It is made of cast steel and has sufficient structural strength and rigidity to support the weight of the electroslag furnace head rotation support, support frame and other transmission components. Its bottom is fixedly connected to the frame of the electroslag furnace by anchor bolts to ensure the stability of the mechanism during operation.

[0056] Fourth embodiment; This embodiment provides a preferred implementation of the drive wheel assembly 3, the drive wheel assembly 3 is referenced Figure 5 and Figure 6As shown, the assembly consists of a bearing support 31, a first sealing component 32, a reducer 33, and a first end cover 34. The bearing support 31 is formed by splicing left and right supports and is fixed to the support frame 5 by bolts. The first sealing component 32 includes a rotating shaft, a drive wheel, a deep groove ball bearing, and a seal. The deep groove ball bearing is installed in the bearing hole of the bearing support 31, the rotating shaft passes through the deep groove ball bearing, the drive wheel is keyed to the middle of the rotating shaft, and the seal is set at both ends of the bearing hole to prevent dust and oil from entering the bearing. The reducer 33 is a planetary gear reducer. Its input end is connected to the variable frequency motor through a coupling, and its output end is connected to one end of the rotating shaft through a spline. The first end cover 34 is bolted to the end of the bearing support 31 to seal and protect the first sealing component 32.

[0057] Fifth embodiment; This embodiment provides a preferred implementation of the driven wheel 4, with reference to the driven wheel 4. Figure 7 and Figure 8 As shown, it consists of an upper bearing support 41, a second sealing assembly 42, a lower bearing support 43, and a second end cap 44. The upper bearing support 41 and the lower bearing support 43 are fixedly connected by bolts to form an installation cavity. The whole assembly is fixed to the support frame 5 by bolts and is symmetrically distributed with the drive wheel assembly 3. The second sealing assembly 42 includes a rotating shaft, a driven wheel, a deep groove ball bearing, and a seal. Its structure is the same as that of the first sealing assembly 32 of the drive wheel assembly. The driven wheel rotates synchronously with the furnace head rotation, providing stable support and guidance for the electroslag furnace head rotation support 2.

[0058] All components of the electroslag furnace head rotation mechanism of the present invention are made of high-temperature and wear-resistant materials specially used in metallurgical equipment to meet the working conditions of high-temperature smelting in electroslag furnaces. All sealing components are made of fluororubber seals to improve sealing performance and service life.

[0059] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will also be understood that, unless explicitly defined herein, terms such as those defined in a general dictionary shall be interpreted as having the meaning consistent with their meaning in the relevant field context, and not as having an idealized or overly formal meaning.

[0060] The present invention has been described in detail above through specific embodiments and examples, but these are not intended to limit the invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A rotary support for the furnace head of an electroslag furnace, used in the rotary mechanism of the furnace head of an electroslag furnace, characterized in that, include: Upper flange (21), thrust ball bearing (22), lower flange (23), lock nut (24), connecting shaft (25), stiffening plate (26), connecting steel pipe (27), V-shaped connector (28) and connecting plate (29); The upper flange (21) is fixedly connected to the upper end of the connecting shaft (25) by a lock nut (24); The thrust ball bearing (22) is fixedly connected to the lower flange (23) by a lock nut (24); The lower part of the connecting shaft (25) is installed in the thrust ball bearing (22); Stiffening ribs (26) are uniformly formed on the outer wall of the connecting steel pipe (27) to increase the strength of the connecting steel pipe (27); Connecting steel pipe (27), which is inserted into and fixedly connected to the connecting hole at the top of V-shaped connector (28), and the lower end face of connecting steel pipe (27) is fixedly connected to upper flange (21); V-shaped connector (28), with connecting plates (29) fixed to the end faces of its two arms, the connecting plates (29) being used to connect the support frame (5).

2. The rotating support part of the electroslag furnace head according to claim 1, characterized in that: The thrust ball bearing (22) is a double-acting thrust ball bearing, and the lower end of the connecting shaft (25) is clearance-fitted with the center hole of the support seat (1).

3. The rotating support part of the electroslag furnace head as described in claim 1, characterized in that: The size of the support arm gradually increases from the connection hole toward the direction away from the connection hole.

4. A rotary mechanism for an electroslag furnace head, comprising a rotary support portion for the electroslag furnace head as described in any one of claims 1-3, characterized in that, Also includes: Support base (1), drive wheel set (3), driven wheel (4) and support frame (5); The lower flange (23) of the rotating support part (2) of the electroslag furnace head is fixedly connected to the top surface of the support base (1) by bolts, and the connecting plate (29) of the rotating support part (2) of the electroslag furnace head is fixedly connected to one side of the support frame (5) by bolts. The drive wheel set (3) and the driven wheel (4) are both installed on the other side of the support frame (5) in a straight line arrangement, and the drive wheel set (3) is connected to the motor drive. The drive wheel assembly (3) drives the driven wheel (4) and the support frame (5) to rotate around the support base (1). The driven wheel (4) cooperates with the drive wheel assembly (3) to support and guide the rotation of the furnace head. Among them, the support base (1), the drive wheel group (3) and the driven wheel (4) together form a horizontal support.

5. The electroslag furnace head rotation mechanism according to claim 4, characterized in that: The drive wheel assembly (3) includes a bearing support (31), a first sealing assembly (32), a reducer (33), and a first end cap (34). The reducer (33) is connected to the motor drive, the first sealing component (32) is installed in the bearing support (31), the output end of the reducer (33) is connected to the first sealing component (32), and the first end cover (34) is closed on the end of the bearing support (31); The first sealing assembly (32) is used for dynamic sealing between the shaft, wheel and bearing.

6. The electroslag furnace head rotation mechanism according to claim 5, characterized in that: The reducer (33) is a planetary gear reducer, and the motor is a variable frequency motor; The input end of the reducer (33) is connected to the variable frequency motor via a coupling, and the output end of the reducer (33) is connected to the shaft of the first sealing assembly (32) via a spline.

7. The electroslag furnace head rotation mechanism according to claim 5, characterized in that: The first sealing assembly (32) includes a shaft, a drive wheel, a deep groove ball bearing, and a seal. The drive wheel is keyed to the middle of the shaft, the deep groove ball bearing is installed in the bearing hole of the bearing support (31), and the seal is located at both ends of the bearing hole.

8. The electroslag furnace head rotation mechanism according to claim 4, characterized in that: The driven wheel (4) includes an upper bearing support (41), a second sealing assembly (42), a lower bearing support (43), and a second end cap (44). The upper bearing support (41) and the lower bearing support (43) are fixedly connected to form an installation cavity, the second sealing assembly (42) is installed in the installation cavity, and the second end cap (44) is closed on the end of the support; The second sealing assembly (42) is used for dynamic sealing between the shaft, wheel and bearing.

9. The electroslag furnace head rotation mechanism according to claim 8, characterized in that: The second sealing assembly (42) includes a shaft, a driven wheel, a deep groove ball bearing, and a seal. The driven wheel is keyed to the middle of the shaft, the deep groove ball bearing is installed in the bearing hole of the mounting cavity, and the seal is located at both ends of the bearing hole.

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