Intelligent automatic adjusting type furnace cover hanging device and assembling method thereof

Abstract

The application discloses an intelligent automatic adjusting type furnace cover hanging device and an assembling method thereof, and belongs to the technical field of furnace cover hanging equipment. The device comprises a lower lifting rod unit, a weighing sensor assembly, a hydraulic cylinder assembly and an upper lifting rod unit arranged above the lower lifting rod unit. The lower lifting rod unit comprises a lower lifting rod, a lower triangular steel plate, three stud bolts, a first adjustable limiting piece and a second adjustable limiting piece. The upper end of the lower lifting rod is fixedly connected to the center of the lower surface of the lower triangular steel plate, and the lower ends of the three stud bolts are fixedly connected to the upper surface of the lower triangular steel plate. The three stud bolts pass through the weighing sensor assembly, the hydraulic cylinder assembly and the upper lifting rod unit in sequence. The upper lifting rod unit passes through the hydraulic cylinder assembly, and the lower end of the upper lifting rod unit is fixedly connected to the weighing sensor assembly. The first adjustable limiting piece is arranged between the three stud bolts and the hydraulic cylinder assembly, and the second adjustable limiting piece is arranged between the three stud bolts and the upper lifting rod unit. The application can effectively solve the problem that the traditional furnace cover hanging device cannot automatically compensate for the sinking of the furnace cover.

Description

Technical Field

[0001] This invention belongs to the technical field of furnace cover hanging equipment, and in particular relates to hanging equipment used in furnaces and kilns in the metallurgical industry, specifically an intelligent automatic adjustable furnace cover hanging device and its assembly method. Background Technology

[0002] For industrial furnaces, the furnace cover is located on the second floor of the factory building. It typically consists of six edge covers, six top covers, and three center covers, all bolted together to form a large circular furnace cover. The lower end of the furnace cover rests on the circular furnace body, and the top of the cover is connected to the upper floor beams by 15 hanging supports. 20% of the weight of the furnace cover rests on the furnace body below, while the remaining 80% is borne by the hanging supports (current hanging devices cannot accurately distribute the pressure ratio during installation). During the operation of the electric furnace, furnace charge and flue gas randomly adhere to each segment of the furnace cover. The furnace cover itself also sinks and deforms due to gravity. This disrupts the original balance of tension distribution. If the weight pressing on the furnace body is too light, the seal between the furnace cover and the furnace body will be inadequate, leading to gas leakage and creating a safety hazard. If the pressure exerted by the furnace cover on the furnace body is too high, it will cause severe deformation of the furnace body, affecting the normal operation of the electric furnace. Furthermore, due to varying degrees of heating and electrode movement, each segment of the furnace cover may become misaligned during use, severely affecting the sealing performance and service life of the furnace cover, and significantly impacting furnace pressure control and flue gas volume changes. Therefore, traditional furnace cover hanging systems cannot automatically compensate for the aforementioned problems caused by furnace cover sinking.

[0003] Currently, domestic electric arc furnaces typically use turnbuckles in the suspension system, where the length of the suspension rod is adjusted by changing the depth of the turnbuckle screws. This method poses a significant safety hazard to operators during industrial furnace operation. Furthermore, the immense weight of the furnace cover makes it difficult for operators to tighten the turnbuckles used to adjust the suspension rod. Additionally, the shape of each furnace cover segment is not uniform, with only the edge covers resting on the furnace body. This results in inconsistent tension at each suspension point. Traditional suspension methods lack theoretical support and rely solely on operator experience, leading to significant operational errors and compromising safe operation of the electric furnace.

[0004] Therefore, it is necessary to develop an intelligent, automatically adjustable furnace cover hanging device that can effectively solve a series of problems caused by furnace cover sinking and uneven stress, ensuring the normal operation of the electric furnace and protecting the personal safety of the staff. Summary of the Invention

[0005] The present invention addresses the above-mentioned problems and overcomes the shortcomings of the prior art by providing an intelligent automatic adjustable furnace cover hanging device and its assembly method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution.

[0007] An intelligent, automatically adjustable furnace cover hanging device includes a lower hanging rod unit. Above the lower hanging rod unit, a weighing sensor assembly, a hydraulic cylinder assembly, and an upper hanging rod unit are sequentially arranged. The lower hanging rod unit includes a lower hanging rod, a lower triangular steel plate, three studs, a first adjustable limiting member, and a second adjustable limiting member. The upper end of the lower hanging rod is fixedly connected to the center of the lower surface of the lower triangular steel plate. The lower ends of the three studs are fixedly connected to the lower triangular steel plate, arranged in an equilateral triangle on the lower triangular steel plate. The three studs pass through the weighing sensor assembly, the hydraulic cylinder assembly, and the upper hanging rod unit sequentially from bottom to top. The hydraulic cylinder assembly sits on the weighing sensor assembly. The upper hanging rod unit passes through the hydraulic cylinder assembly from top to bottom, and its lower end is fixedly connected to the weighing sensor assembly. The three studs are connected to the hydraulic cylinder assembly via the first adjustable limiting member, and to the upper hanging rod unit via the second adjustable limiting member.

[0008] As a preferred embodiment of the present invention, the weighing sensor assembly includes a weighing sensor and a weighing sensor base steel plate. The bottom of the weighing sensor is connected to the center of the upper surface of the weighing sensor base steel plate, and the three studs of the lower suspension rod unit pass through the weighing sensor base steel plate.

[0009] As another preferred embodiment of the present invention, the hydraulic cylinder assembly includes a hydraulic cylinder and a hydraulic cylinder top cover steel plate. The top of the hydraulic cylinder is connected to the center of the lower surface of the hydraulic cylinder top cover steel plate, and the three studs of the lower lifting rod unit pass through the hydraulic cylinder top cover steel plate and are connected by a first adjustable limiting member.

[0010] As another preferred embodiment of the present invention, the upper suspension rod unit includes an upper suspension rod, an upper triangular steel plate, and three round steel bars. The lower end of the upper suspension rod is fixedly connected to the center of the upper surface of the upper triangular steel plate, and the upper ends of the three round steel bars are fixedly connected to the upper triangular steel plate. The three round steel bars are distributed in an equilateral triangle on the upper triangular steel plate. The three round steel bars pass through the top cover steel plate of the hydraulic cylinder from top to bottom, and the lower ends of the three round steel bars are fixedly connected to the base steel plate of the weighing sensor.

[0011] As another preferred embodiment of the present invention, the equilateral triangle formed by the three round steel bars and the equilateral triangle formed by the three studs have the same center, and the equilateral triangle formed by the three round steel bars is located outside the equilateral triangle formed by the three studs.

[0012] As another preferred embodiment of the present invention, the three studs are all cylindrical structures with threads on the upper part and no threads on the lower part. The first adjustable limiting member is composed of three first nuts, and the second adjustable limiting member is composed of three second nuts and three washers. The three studs located above the top cover steel plate of the hydraulic cylinder are threaded and connected to the first nuts. The three studs located above the upper triangular steel plate are all fitted with washers and connected to the second nuts.

[0013] In another preferred embodiment of the present invention, the weighing sensor is electrically connected to a computer, and the computer is communicatively connected to the electronic control system of the hydraulic cylinder; the weighing sensor is used to transmit weighing data to the computer in real time; the computer is used to control the lifting and lowering of the hydraulic cylinder based on the weighing data transmitted back by the weighing sensor.

[0014] As another preferred embodiment of the present invention, the hydraulic cylinder is an oil cylinder.

[0015] Furthermore, when the intelligent automatic adjustable furnace cover hanging device is in operation, the upper end of the upper hanging rod is connected to the crossbeam of the factory building, and the lower end of the lower hanging rod is connected to the furnace cover. After the furnace cover is installed, the computer sets the pre-given tension value and adjustable range. When the electric furnace is running, if a section of the furnace cover becomes unbalanced and sinks, the weighing sensor will promptly transmit the real-time measured weight data back to the computer. After computer processing and analysis, if the measured value exceeds the pre-set tension range, the hydraulic cylinder will rise, lifting the lower hanging rod to pull the sunken furnace cover back to its original height, achieving automatic compensation. If the value fed back by the weighing sensor exceeds the set adjustable range, an early warning will be issued, requiring manual intervention.

[0016] Furthermore, the assembly method of the intelligent automatic adjustable furnace cover hanging device provided by the present invention, which is implemented using the aforementioned intelligent automatic adjustable furnace cover hanging device, includes the following steps: Step 1: Remove the triangular steel plate. Drill three holes on the lower triangular steel plate according to the outer diameter of the studs. The holes are evenly distributed around the circumference to form an equilateral triangle. Weld the upper end of the lower rod to the center of the lower triangular steel plate. Then take three studs and insert the lower ends of the three studs into the three holes drilled in the lower triangular steel plate, extending them a certain distance out of the holes and welding them firmly. Step 2: Take the steel plate of the load cell base and drill six holes on the steel plate of the load cell base according to the outer diameter of the stud and the round steel. Three holes are on the inner circle and three holes are on the outer circle. The pitch circle of the three holes on the inner circle is the same as the pitch circle of the three holes on the lower triangular steel plate. The pitch circle diameter of the three holes on the outer circle is larger than the pitch circle diameter of the three holes on the inner circle, so that the round steel is just outside the stud. Step 3: Take the top cover steel plate and the upper triangular steel plate of the hydraulic cylinder, and make the holes in the same position and size as the six holes on the base steel plate of the weighing sensor. Step 4: Place the upper suspension rod vertically and weld its lower end firmly to the center of the upper triangular steel plate; then take three round steel bars, place them vertically, and insert the upper ends of the three round steel bars into the three outer holes of the six holes on the upper triangular steel plate, inserting them a certain distance and welding them firmly; then, pass the three round steel bars through the three outer holes of the six holes on the hydraulic cylinder top cover steel plate without welding; and continue to insert them into the three outer holes of the six holes on the weighing sensor base steel plate, inserting them a certain distance and welding them firmly. Step 5: Take the load cell, install it on the steel plate of the load cell base, and electrically connect the load cell to the computer to transmit weighing data to the computer in real time. Step 6: Take the hydraulic cylinder and place it on the load cell. Install the lifting end of the hydraulic cylinder at the center of the lower surface of the top cover steel plate of the hydraulic cylinder. The hydraulic cylinder and the load cell are interlocked. Based on the weighing data returned by the load cell, the hydraulic cylinder is lifted and lowered. Step 7: Remove the lifting rod. At this point, the lower lifting rod has been assembled with the lower triangular steel plate and three studs through the operation in Step 1. Align the three studs with the three holes in the inner ring of the load cell base steel plate and insert them, but do not weld them. Continue to insert them into the hydraulic cylinder top cover steel plate. After insertion, take three first nuts and screw them onto the three studs respectively, making sure that the three first nuts are screwed in to the same depth. Continue to insert the three studs into the three holes in the inner ring of the six holes on the upper triangular steel plate. Take three washers and three second nuts and screw them onto the three studs respectively. The assembly is now complete.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The intelligent automatic adjusting furnace lid hanging device provided by this invention has the following significant advantages: (1). The intelligent automatic adjustment furnace cover hanging device provided by the present invention can realize the automatic lifting of hydraulic cylinder by computer control, which can effectively solve the problem that the traditional furnace cover hanging cannot automatically compensate for the sinking of the furnace cover; realize automated production, which is more conducive to the electrochemical reaction, greatly reduce the power consumption of the product, and increase the production capacity of the electric furnace; the weighing sensor can provide the weighing value in real time and upload it to the computer to provide data support for the production of the electric furnace.

[0018] (2) The intelligent automatic adjustable furnace cover hanging device provided by the present invention can reduce the labor intensity of workers, avoid workers from working in the area above the furnace cover, and protect the personal safety of operators. It not only ensures the safe production of the electric furnace, but also greatly improves the safety of workers' operation; it can detect problems in time and issue early warnings through the computer, providing a layer of protection for the safe production of the electric furnace.

[0019] (3). The intelligent automatic adjustment furnace cover hanging device provided by the present invention is suitable for various working conditions in the electric furnace production process. The system operates reliably and the failure rate of the equipment is greatly reduced. The lower hanging rod unit adopts an equilateral triangle vertical movable design relative to the upper hanging rod unit, which ensures the stability of the device while improving its durability.

[0020] (4). The intelligent automatic adjustment furnace cover hanging device provided by the present invention has a simple and clear structural design, is easy to install, and can be operated by ordinary workers; it is easy to disassemble, and the installation and disassembly time is short; the installation and disassembly of the electrode column platform composite seal will not affect the continuous normal operation of the electric arc furnace.

[0021] In summary, this invention overcomes the shortcomings of traditional hanging systems, which lack automatic compensation and early warning capabilities. It ensures both worker safety and safe operation of the electric furnace, reduces downtime and frequency, and contributes to cost savings. Furthermore, it effectively solves problems such as uneven tension in the hanging force of each furnace cover segment during operation, short seal life, difficulty in maintenance and adjustment, inaccurate correlation with furnace pressure data, and uncertain contact pressure with the furnace body during installation. This invention effectively reduces the furnace cover failure rate, improves equipment safety, enables precise digital interlocking adjustment, reduces worker workload, and significantly improves electric furnace production efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main structure of an intelligent automatic adjustable furnace cover hanging device according to the present invention.

[0023] Figure 2 This is a top view schematic diagram of an intelligent automatic adjustable furnace cover hanging device according to the present invention.

[0024] Figure 3 This is a schematic diagram of the AA cross-section of an intelligent automatic adjusting furnace cover hanging device according to the present invention.

[0025] Figure 4 This is a BB cross-sectional view of an intelligent automatic adjustable furnace cover hanging device according to the present invention.

[0026] The markings in the diagram are as follows: 1 is the upper lifting rod, 2 is the upper triangular steel plate, 3 is the round steel, 4 is the steel plate of the load cell base, 5 is the load cell, 6 is the hydraulic cylinder, 7 is the steel plate of the hydraulic cylinder top cover, 8 is the lower lifting rod, 9 is the lower triangular steel plate, 10 is the first nut, 11 is the second nut, 12 is the washer, and 13 is the stud. Detailed Implementation

[0027] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0028] Please see Figures 1 to 4 This invention provides an intelligent automatic adjustable furnace cover hanging device, comprising a lower hanging rod unit. Above the lower hanging rod unit are sequentially arranged a weighing sensor assembly, a hydraulic cylinder assembly, and an upper hanging rod unit. The lower hanging rod unit includes a lower hanging rod 8, a lower triangular steel plate 9, three studs 13, a first adjustable limiting component, and a second adjustable limiting component. The upper end of the lower hanging rod 8 is welded to the center of the lower surface of the lower triangular steel plate 9, and the lower ends of the three studs 13 are welded to the lower triangular steel plate 9. Three studs 13 are distributed in an equilateral triangle on the lower triangular steel plate 9. The three studs 13 pass through the load cell assembly, the hydraulic cylinder assembly, and the upper lifting rod unit from bottom to top. The hydraulic cylinder assembly is located on the load cell assembly. The upper lifting rod unit passes through the hydraulic cylinder assembly from top to bottom, and the lower end of the upper lifting rod unit is fixedly connected to the load cell assembly. The three studs 13 are connected to the hydraulic cylinder assembly through a first adjustable limiting member, and the three studs 13 are connected to the upper lifting rod unit through a second adjustable limiting member.

[0029] Specifically, the weighing sensor assembly includes a weighing sensor 5 and a weighing sensor base steel plate 4. The bottom of the weighing sensor 5 is connected to the center of the upper surface of the weighing sensor base steel plate 4, and the three studs 13 of the lower suspension rod unit pass through the weighing sensor base steel plate 4. The hydraulic cylinder assembly includes a hydraulic cylinder 6 and a hydraulic cylinder top cover steel plate 7. The top of the hydraulic cylinder 6 is connected to the center of the lower surface of the hydraulic cylinder top cover steel plate 7, and the three studs 13 of the lower suspension rod unit pass through the hydraulic cylinder top cover steel plate 7 and are connected by a first adjustable limiting member. The upper suspension rod unit includes an upper suspension rod 1, an upper triangular steel plate 2, and three round steel bars 3. The lower end of the upper suspension rod 1 is fixed to the center of the upper surface of the upper triangular steel plate 2 by welding, and the upper ends of the three round steel bars 3 are fixed to the upper triangular steel plate 2 by welding. The three round steel bars 3 are distributed in an equilateral triangle on the upper triangular steel plate 2, and the three round steel bars 3 pass through the hydraulic cylinder top cover steel plate 7 from top to bottom, and the lower ends of the three round steel bars 3 are fixed to the weighing sensor base steel plate 4 by welding. Among them, the upper triangular steel plate 2 is larger than the lower triangular steel plate 9.

[0030] Specifically, the equilateral triangle formed by the three round steel bars 3 and the equilateral triangle formed by the three studs 13 have the same center, and the equilateral triangle formed by the three round steel bars 3 is located outside the equilateral triangle formed by the three studs 13; this ensures that the three studs 13 and the three round steel bars 3 will not interfere when the lower lifting rod 8 moves up and down.

[0031] Specifically, the three studs 13 are all cylindrical structures with threads on the upper part and no threads on the lower part. The first adjustable limiting member consists of three first nuts 10, and the second adjustable limiting member consists of three second nuts 11 and three washers 12. The three studs 13 located above the hydraulic cylinder top cover steel plate 7 have threads, and the three studs 13 located above the hydraulic cylinder top cover steel plate 7 are connected to the first nuts 10. The three studs 13 located above the upper triangular steel plate 2 are all fitted with washers 12 and connected to the second nuts 11.

[0032] Specifically, the weighing sensor 5 is electrically connected to a computer, and the computer is communicatively connected to the electronic control system of the hydraulic cylinder 6; the weighing sensor 5 is used to transmit weighing data to the computer in real time; the computer is used to control the lifting and lowering of the hydraulic cylinder 6 based on the weighing data transmitted back by the weighing sensor 5.

[0033] Preferably, the hydraulic cylinder 6 can be an oil cylinder.

[0034] Specifically, when the intelligent automatic adjustable furnace cover hanging device is working, the upper end of the upper hanging rod 1 is connected to the crossbeam of the factory building, and the lower end of the lower hanging rod 8 is connected to the furnace cover. After the furnace cover is installed, the computer sets the pre-given tension value and adjustable range. When the electric furnace is running, if a certain part of the furnace cover becomes unbalanced and sinks, the weighing sensor 5 will promptly transmit the real-time measured weight data back to the computer. After computer processing and analysis, if the measured value exceeds the pre-set tension range, the hydraulic cylinder 6 will rise, lifting the lower hanging rod 8 to pull the sunken furnace cover back to its original height, thus achieving automatic compensation. If the value fed back by the weighing sensor 5 exceeds the set adjustable range, an early warning will be issued, requiring manual intervention.

[0035] Furthermore, the assembly method of the intelligent automatic adjustable furnace cover hanging device provided in this embodiment of the invention, implemented using the aforementioned intelligent automatic adjustable furnace cover hanging device, includes the following steps: Step 1: Remove the triangular steel plate 9. Drill three holes in the lower triangular steel plate 9 according to the outer diameter of the stud 13. The holes are evenly distributed around the circumference to form an equilateral triangle. Weld the upper end of the lower hanging rod 8 to the center of the lower triangular steel plate 9. Then take three studs 13 and insert the lower ends of the three studs 13 into the three holes drilled in the lower triangular steel plate 9 respectively, extending a certain distance outside the holes and welding them firmly. Step 2: Take the load cell base steel plate 4 and drill six holes on the load cell base steel plate 4 according to the outer diameter of the stud 13 and the round steel 3, three on the inner ring and three on the outer ring. The pitch circle of the three holes on the inner ring is the same as the pitch circle of the three holes on the lower triangular steel plate 9. The pitch circle diameter of the three holes on the outer ring is larger than the pitch circle diameter of the three holes on the inner ring, so that the round steel 3 is just outside the stud 13. Step 3: Take the hydraulic cylinder top cover steel plate 7 and the upper triangular steel plate 2, and make the holes in the same position and size as the six holes on the weighing sensor base steel plate 4. Step 4: Place the upper lifting rod 1 vertically and weld its lower end firmly to the center of the upper triangular steel plate 2; then take three round steel bars 3, place them vertically, and insert the upper ends of the three round steel bars 3 into the three outer holes of the six holes on the upper triangular steel plate 2 respectively, inserting them a certain distance and welding them firmly; then, pass the three round steel bars 3 through the three outer holes of the six holes on the hydraulic cylinder top cover steel plate 7 without welding; and continue to insert them into the three outer holes of the six holes on the weighing sensor base steel plate 4, inserting them a certain distance and welding them firmly. Step 5: Take the load cell 5 and install it on the steel plate 4 of the load cell base. Connect the load cell 5 to the computer and transmit the weighing data to the computer in real time through the load cell 5. Step 6: Take the hydraulic cylinder 6 and place it on the load cell 5. Install the lifting end of the hydraulic cylinder 6 at the center of the lower surface of the top cover steel plate 7 of the hydraulic cylinder. The hydraulic cylinder 6 and the load cell 5 are interlocked. The lifting and lowering of the hydraulic cylinder 6 is controlled according to the weighing data transmitted back by the load cell 5. Step 7: Remove the lower lifting rod 8. At this point, the lower lifting rod 8 has been assembled with the lower triangular steel plate 9 and the three studs 13 through the operation in Step 1. Align the three studs 13 with the three holes in the inner ring of the load cell base steel plate 4 and insert them, but do not weld them. Continue to insert them into the hydraulic cylinder top cover steel plate 7. After inserting them, take three first nuts 10 and screw them onto the three studs 13 respectively, so that the three first nuts 10 are screwed in to the same depth. Continue to insert the three studs 13 into the three holes in the inner ring of the six holes on the upper triangular steel plate 2. Take three washers 12 and three second nuts 11 and screw them onto the three studs 13 respectively. The assembly is now complete.

[0036] In summary, the intelligent automatic adjustable furnace cover hanging device of the present invention consists of a weighing sensor assembly installed between the upper and lower hanging rod units of the furnace cover. A hydraulic cylinder 6 is installed above the weighing sensor assembly. Thick steel plates, namely the weighing sensor base steel plate 4 and the hydraulic cylinder top cover steel plate 7, are respectively installed below the weighing sensor 5 and above the hydraulic cylinder 6. Three round steel bars 3 and three studs 13 are evenly distributed around the circumference of the hydraulic cylinder 6, with three studs 13 in the inner ring and three round steel bars 3 in the outer ring. A thick steel plate, namely the lower triangular steel plate 9, is welded to the lower end of the three studs 13 in the inner ring and connected to the lower hanging rod 8. The upper part of the three studs 13 in the inner ring is a threaded cylinder that passes through the thick steel plate below the weighing sensor 5 and the thick steel plate above the hydraulic cylinder and is positioned by the first nut 10. No welding is done at the point where the studs pass through the steel plates. A thick steel plate, i.e., an upper triangular steel plate 2, is welded to the upper end of the three round steel bars 3 on the outer ring and connected to the upper suspension rod 1. The lower ends of the three round steel bars 3 on the outer ring are welded to the thick steel plate below the weighing sensor 5. The weighing sensor 5 and the hydraulic cylinder 6 are both connected to the computer and interlocked. After the furnace cover is installed, the pre-set tension value and adjustable range are set on the computer. During the operation of the electric furnace, if a section of the furnace cover sinks due to weight imbalance, the weighing sensor 5 will promptly transmit real-time data back to the computer. If the measured value has exceeded the pre-set tension range, the hydraulic cylinder 6 will rise, lifting the lower suspension rod 8 to pull the sunken furnace cover back to its original height, achieving automatic compensation. If the feedback value from the weighing sensor 5 has exceeded the set adjustable range, an early warning will be issued, requiring manual intervention. This device overcomes the shortcomings of traditional hanging systems that cannot automatically compensate or issue early warnings, ensuring both worker safety and safe production of the electric furnace, reducing downtime and frequency, saving costs, and improving production efficiency.

[0037] It is understood that, although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent, automatically adjustable furnace lid hanging device, characterized in that, The system includes a lower boom unit, above which a load cell assembly, a hydraulic cylinder assembly, and an upper boom unit are sequentially arranged. The lower boom unit includes a lower boom, a lower triangular steel plate, three studs, a first adjustable limiting member, and a second adjustable limiting member. The upper end of the lower boom is fixedly connected to the center of the lower surface of the lower triangular steel plate. The lower ends of the three studs are fixedly connected to the lower triangular steel plate, and the three studs are distributed in an equilateral triangle on the lower triangular steel plate. The three studs pass through the load cell assembly, the hydraulic cylinder assembly, and the upper boom unit sequentially from bottom to top. The hydraulic cylinder assembly sits on the load cell assembly. The upper boom unit passes through the hydraulic cylinder assembly from top to bottom, and the lower end of the upper boom unit is fixedly connected to the load cell assembly. The three studs are connected to the hydraulic cylinder assembly through the first adjustable limiting member, and the three studs are connected to the upper boom unit through the second adjustable limiting member.

2. The intelligent automatic adjusting furnace lid hanging device according to claim 1, characterized in that, The weighing sensor assembly includes a weighing sensor and a weighing sensor base steel plate. The bottom of the weighing sensor is connected to the center of the upper surface of the weighing sensor base steel plate, and the three studs of the lower suspension rod unit pass through the weighing sensor base steel plate.

3. The intelligent automatic adjusting furnace lid hanging device according to claim 2, characterized in that, The hydraulic cylinder assembly includes a hydraulic cylinder and a hydraulic cylinder top cover steel plate. The top of the hydraulic cylinder is connected to the center of the lower surface of the hydraulic cylinder top cover steel plate. The three studs of the lower lifting rod unit pass through the hydraulic cylinder top cover steel plate and are connected by the first adjustable limiting member.

4. The intelligent automatic adjusting furnace lid hanging device according to claim 3, characterized in that, The upper suspension rod unit includes an upper suspension rod, an upper triangular steel plate, and three round steel bars. The lower end of the upper suspension rod is fixedly connected to the center of the upper surface of the upper triangular steel plate. The upper ends of the three round steel bars are fixedly connected to the upper triangular steel plate. The three round steel bars are distributed in an equilateral triangle on the upper triangular steel plate. The three round steel bars pass through the top cover steel plate of the hydraulic cylinder from top to bottom, and the lower ends of the three round steel bars are fixedly connected to the base steel plate of the weighing sensor.

5. The intelligent automatic adjusting furnace lid hanging device according to claim 4, characterized in that, The equilateral triangle formed by the three round steel bars and the equilateral triangle formed by the three studs have the same center, and the equilateral triangle formed by the three round steel bars is located outside the equilateral triangle formed by the three studs.

6. The intelligent automatic adjusting furnace lid hanging device according to claim 4, characterized in that, The three studs are all cylindrical structures with threads on the upper part and no threads on the lower part. The first adjustable limiting component consists of three first nuts, and the second adjustable limiting component consists of three second nuts and three washers. The three studs located above the hydraulic cylinder top cover steel plate have threads and are connected to the first nuts. The three studs located above the upper triangular steel plate are all fitted with washers and connected to the second nuts.

7. The intelligent automatic adjusting furnace lid hanging device according to claim 3, characterized in that, The weighing sensor is electrically connected to a computer, and the computer is communicatively connected to the electronic control system of the hydraulic cylinder. The weighing sensor is used to transmit weighing data to the computer in real time. The computer is used to control the lifting and lowering of the hydraulic cylinder based on the weighing data transmitted back by the weighing sensor.

8. The intelligent automatic adjusting furnace lid hanging device according to claim 7, characterized in that, When the intelligent automatic adjustable furnace cover hanging device is in operation, the upper end of the upper hanging rod is connected to the crossbeam of the factory building, and the lower end of the lower hanging rod is connected to the furnace cover. After the furnace cover is installed, the computer sets the pre-given tension value and adjustable range.

9. The intelligent automatic adjusting furnace lid hanging device according to claim 8, characterized in that, When the electric furnace is running, if a section of the furnace cover becomes unbalanced and sinks, the load cell will transmit the real-time measured weight data back to the computer. After computer processing and analysis, if the measured value exceeds the preset tension range, the hydraulic cylinder will rise, lifting the lower boom to pull the sunken furnace cover back to its original height, thus achieving automatic compensation. If the value fed back by the load cell exceeds the set adjustable range, an early warning will be issued, requiring manual intervention.

10. An assembly method for an intelligent, automatically adjustable furnace lid hanging device, characterized in that, The intelligent, automatically adjustable furnace lid hanging device according to any one of claims 1 to 9 comprises the following steps: Step 1: Remove the triangular steel plate. Drill three holes on the lower triangular steel plate according to the outer diameter of the studs. The holes are evenly distributed around the circumference to form an equilateral triangle. Weld the upper end of the lower rod to the center of the lower triangular steel plate. Then take three studs and insert the lower ends of the three studs into the three holes drilled in the lower triangular steel plate, extending them a certain distance out of the holes and welding them firmly. Step 2: Take the steel plate of the load cell base and drill six holes on the steel plate of the load cell base according to the outer diameter of the stud and the round steel. Three holes are on the inner circle and three holes are on the outer circle. The pitch circle of the three holes on the inner circle is the same as the pitch circle of the three holes on the lower triangular steel plate. The pitch circle diameter of the three holes on the outer circle is larger than the pitch circle diameter of the three holes on the inner circle, so that the round steel is just outside the stud. Step 3: Take the top cover steel plate and the upper triangular steel plate of the hydraulic cylinder, and make the holes in the same position and size as the six holes on the base steel plate of the weighing sensor. Step 4: Place the upper suspension rod vertically and weld its lower end firmly to the center of the upper triangular steel plate; then take three round steel bars, place them vertically, and insert the upper ends of the three round steel bars into the three outer holes of the six holes on the upper triangular steel plate, inserting them a certain distance and welding them firmly; then, pass the three round steel bars through the three outer holes of the six holes on the hydraulic cylinder top cover steel plate without welding; and continue to insert them into the three outer holes of the six holes on the weighing sensor base steel plate, inserting them a certain distance and welding them firmly. Step 5: Take the load cell, install it on the steel plate of the load cell base, and electrically connect the load cell to the computer to transmit weighing data to the computer in real time. Step 6: Take the hydraulic cylinder and place it on the load cell. Install the lifting end of the hydraulic cylinder at the center of the lower surface of the top cover steel plate of the hydraulic cylinder. The hydraulic cylinder and the load cell are interlocked. Based on the weighing data returned by the load cell, the hydraulic cylinder is lifted and lowered. Step 7: Remove the lifting rod. At this point, the lower lifting rod has been assembled with the lower triangular steel plate and three studs through the operation in Step 1. Align the three studs with the three holes in the inner ring of the load cell base steel plate and insert them, but do not weld them. Continue to insert them into the hydraulic cylinder top cover steel plate. After insertion, take three first nuts and screw them onto the three studs respectively, making sure that the three first nuts are screwed in to the same depth. Continue to insert the three studs into the three holes in the inner ring of the six holes on the upper triangular steel plate. Take three washers and three second nuts and screw them onto the three studs respectively. The assembly is now complete.

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