Electricity slag furnace furnace head rotation support part and rotary mechanism

Abstract

This utility model relates to the field of special metallurgy, and discloses a rotating support and slewing mechanism for an electroslag remelting furnace head. The rotating support, used for the slewing mechanism of the electroslag remelting furnace head, includes: an upper flange, a thrust ball bearing, a lower flange, a locking nut, and a connecting shaft. The upper and lower flanges are respectively fixed to the upper and lower ends of the connecting shaft for securing external structures. The thrust ball bearing is sleeved on the outside of the connecting shaft, and the locking nut is screwed onto the end of the connecting shaft for fixing the upper and lower flanges. This utility model improves the slewing efficiency of the electroslag remelting furnace head, has low maintenance requirements, low cost, and ensures convenient and efficient furnace head slewing operation.

Description

Technical Field

[0001] This utility model relates to the field of special metallurgical industry, and in particular to an electroslag furnace head rotating support for an electroslag furnace head rotating mechanism, and an electroslag furnace head rotating mechanism having the electroslag furnace head rotating 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 and aviation. 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 for the defects of the aforementioned hydraulically driven furnace head rotation mechanism. The existing electroslag furnace head rotation operation still generally adopts hydraulic drive, which cannot solve the problems of low efficiency, difficult maintenance, and unstable performance. Utility Model Content

[0009] The utility model description section 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 utility model description section 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 this utility model is to provide a rotating support part 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 rotating support part of the electroslag furnace head, this utility model also aims to solve the technical problems of low efficiency, high maintenance requirements, performance affected by temperature, high cost, and limited transmission ratio accuracy of the existing electroslag furnace head rotation mechanism using hydraulic drive, while ensuring the convenience and efficiency of the furnace head rotation operation.

[0012] To solve the above-mentioned technical problems, the present invention provides a rotating support part for the electroslag furnace head, which is used for the rotating mechanism of the electroslag furnace head, including: an upper flange, a thrust ball bearing, a lower flange, a locking nut and a connecting shaft; The upper and lower flanges are fixed to the upper and lower ends of the connecting shaft, respectively, for fixing and connecting the external structure. The thrust ball bearing is sleeved on the outside of the connecting shaft, and the lock nut is screwed onto the end of the connecting shaft to fix the upper flange and the lower flange.

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

[0014] This utility model provides a rotary mechanism for the furnace head of an electroslag furnace, which has the above-mentioned rotating support part for the furnace head of an electroslag furnace, and further includes: a support base, a drive wheel set, a driven wheel and a support frame; The lower flange of the rotating support part of the electroslag furnace head is fixedly connected to the top surface of the support base by bolts, and the upper flange of the rotating support part of the electroslag furnace head is fixedly connected to the lower part of one side of the support frame by bolts. Both the drive wheel set and the driven wheel are installed on the lower part of 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] The working principle of this utility model is explained below based on the above technical solution; This utility model forms a simple, easy-to-install, stable connection and high torsional strength rotating support for the electroslag furnace head by means of a thrust ball bearing, a connecting shaft and a flange.

[0021] Based on the aforementioned rotating support part of the electroslag furnace head, the electroslag furnace head rotation mechanism provided by this utility model uses a motor reducer as a power source. The rotational power of the motor is transmitted to the rotating support part of the electroslag furnace head through the drive wheel set, driving the driven wheel and support frame to rotate around the support base as a whole. The thrust ball bearing in the rotating support part of the electroslag furnace head 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.

[0022] Based on the above technical solution and working principle, this utility model 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.

[0023] This invention employs a mechanical transmission method using a motor reducer, eliminating the fluid resistance loss and oil leakage problems associated with hydraulic systems. Its energy transmission efficiency is far superior to that of hydraulic transmission. This invention boasts high transmission efficiency and low operating costs.

[0024] (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.

[0025] The mechanical transmission components of this utility model 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 the troubleshooting, making maintenance convenient and the troubleshooting difficulty low.

[0026] (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.

[0027] The working performance of the mechanical transmission component of this 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.

[0028] (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.

[0029] 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.

[0030] (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.

[0031] The mechanical transmission structure of this invention does not have the problem of medium compressibility, and can achieve strict constant transmission ratio control. The transmission ratio accuracy is high, which in turn leads to high furnace head rotation accuracy, meeting the requirements of high-precision operation.

[0032] (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 replace the crucible without vacuum damage. Furthermore, hydraulic system failures can easily lead to production interruptions and reduce production efficiency.

[0033] The furnace head rotation mechanism of this utility model operates smoothly and responds quickly, enabling rapid adjustment of the furnace head position. This allows for crucible replacement in the electroslag furnace without disrupting the vacuum environment, avoiding the time and energy consumption associated with vacuum environment reconstruction. It also replaces some manual operations, reducing the labor intensity of operators and enabling crucible replacement without vacuum disruption, thereby improving production efficiency.

[0034] (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.

[0035] The motor reducer system of this utility model can effectively absorb and buffer vibrations and impacts during operation. The thrust ball bearing of the rotating support part of the electroslag furnace head reduces rotational friction, and the driven wheel realizes stable support of the furnace head. It can effectively protect the furnace structure and precision transmission components, ensure smooth operation, and extend the service life of the equipment.

[0036] (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.

[0037] The speed, torque and other parameters of the motor reducer of this utility model 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

[0038] The accompanying drawings are intended to illustrate the general characteristics of the methods, structures, and / or materials used in specific exemplary embodiments of the present invention, supplementing the description in the specification. However, the accompanying 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 accompanying drawings should not be construed as limiting or restricting the range of numerical values ​​or properties covered by the exemplary embodiments of the present invention. The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0039] Figure 1 This is a schematic diagram of the rotating support structure of the electroslag furnace head of this utility model. Figure 1 .

[0040] Figure 2 This is a schematic diagram of the rotating support structure of the electroslag furnace head of this utility model. Figure 2 .

[0041] Figure 3 This is a schematic diagram of the overall structure of the electroslag furnace head rotation mechanism of this utility model.

[0042] Figure 4 This is a schematic diagram of a preferred embodiment of the drive wheel assembly of this utility model. Figure 1 .

[0043] Figure 5 This is a schematic diagram of a preferred embodiment of the drive wheel assembly of this utility model. Figure 2 .

[0044] Figure 6 This is a schematic diagram of a preferred embodiment of the driven wheel of this utility model. Figure 1 .

[0045] Figure 7 This is a schematic diagram of a preferred embodiment of the driven wheel of this utility model. Figure 2 .

[0046] Explanation of reference numerals in the attached figures: Support 1; 2. Rotary support part of the electroslag furnace head; Drive wheel set 3; Driven wheel 4; Support frame 5; Upper flange 21; Thrust ball bearing 22; Lower flange 23; Lock nut 24; Connecting shaft 25; 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

[0047] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can fully understand other advantages and technical effects of this utility model from the content disclosed in this specification. This utility model 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 utility model. 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 this utility model can be implemented in many different forms and should not be construed as limited to the specific embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of this utility model 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.

[0048] First embodiment; refer to Figure 1 As shown, this utility model provides a rotating support part for the furnace head of an electroslag furnace, which is used for the rotating mechanism of the furnace head of an electroslag furnace, including: an upper flange 21, a thrust ball bearing 22, a lower flange 23, a locking nut 24 and a connecting shaft 25; The thrust ball bearing 22 is a double-direction thrust ball bearing, which is sleeved on the outer side of the middle part of the connecting shaft 25. The upper flange 21 is fixed to the upper raceway of the thrust ball bearing 22 by bolts, and the lower flange 23 is fixed to the lower raceway of the thrust ball bearing 22 by bolts. The lower end of the connecting shaft 25 is clearance-fitted with the center hole of the support seat 1. The lock nut 24 is screwed onto the upper end of the connecting shaft 25 to fasten the upper flange 21, the thrust ball bearing 22, and the lower flange 23 to the connecting shaft 25 to prevent axial movement of the components. The lower flange 23 is fixedly connected to the upper surface of the support seat 1 by a ring array of bolts, and the upper flange 21 is fixedly connected to the furnace head mounting plate of the electroslag furnace by a ring array of bolts. The thrust ball bearing 22 enables relative rotation between the furnace head mounting plate and the support seat 1, reducing rotational friction.

[0049] Second embodiment;

[0050] refer to Figure 3 As shown, this utility model provides a rotary mechanism for the head of an electroslag furnace, which has the rotary support part for the head of the electroslag furnace 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 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 upper flange 21 of the rotating support part 2 of the electroslag furnace head is fixedly connected to the lower part of 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.

[0051] 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.

[0052] Third embodiment; This embodiment provides a preferred implementation of the support base 1. The support base 1 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 rotating support part 2 of the electroslag furnace head, the furnace head 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.

[0053] Fourth embodiment; This embodiment provides a preferred implementation of the drive wheel assembly 3, the drive wheel assembly 3 is referenced Figure 4 and Figure 5 As 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 a support frame 5 by bolts. The support frame 5 is fixedly connected to the support base 1. 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.

[0054] Fifth embodiment; This embodiment provides a preferred implementation of the driven wheel 4, with reference to the driven wheel 4. Figure 6 and Figure 7As 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, providing stable support and guidance for the rotating support part 2 of the electroslag furnace head.

[0055] All components of the electroslag furnace head rotation mechanism in this embodiment are made of high-temperature and wear-resistant materials specifically designed for metallurgical equipment, meeting the requirements of high-temperature smelting in electroslag furnaces. All sealing components are made of fluororubber seals, improving sealing performance and service life.

[0056] 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.

[0057] The present invention has been described in detail above through specific embodiments and examples, but these are not intended to limit the present invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the present invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A rotating support part for an electroslag furnace head, used in the rotating mechanism of the electroslag furnace head, characterized in that, include: Upper flange (21), thrust ball bearing (22), lower flange (23), lock nut (24) and connecting shaft (25); 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).

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. A rotary mechanism for an electroslag furnace head, comprising the rotary support portion for the electroslag furnace head as described in claim 1, 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 upper flange (21) of the rotating support part (2) of the electroslag furnace head is fixedly connected to the lower part of 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.

4. The electroslag furnace head rotation mechanism according to claim 3, 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.

5. The electroslag furnace head rotation mechanism according to claim 4, 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.

6. The electroslag furnace head rotation mechanism according to claim 4, 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.

7. The electroslag furnace head rotation mechanism according to claim 3, 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.

8. The electroslag furnace head rotation mechanism according to claim 7, 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.

Images