Differential anti-backlash driving high-precision wireless ring type distributing car for electric arc furnace

Abstract

This invention relates to the technical field of charging equipment for top submerged arc furnaces, and discloses a high-precision wireless circular charging trolley for submerged arc furnaces driven by differential backlash elimination. It works in conjunction with a guide rail and a discharge chute outlet located on the top of the submerged arc furnace. The trolley includes a frame mounted on the guide rail, with a set of wheels at the bottom. These wheels are driven by a differential backlash elimination method, moving the frame along the guide rail to the corresponding position at the discharge chute outlet. An electrical control box and a battery are mounted on the frame, with the control box used for wireless control of the frame's movement and material feeding. This high-precision wireless circular charging trolley for submerged arc furnaces, by setting up a primary transverse material distribution bin, a primary transverse material distribution plate group, a lifting secondary material distribution bin, and a secondary longitudinal material distribution plate within the material bin, ensures that the furnace charge undergoes transverse distribution, buffering and rectification, and longitudinal distribution processes sequentially before entering the discharge chute outlet. This reduces localized piling caused by the concentrated material column falling from the furnace.

Description

Technical Field

[0001] This invention relates to the technical field of charging equipment for the top of a submerged arc furnace, and in particular to a high-precision wireless circular material distribution trolley for a submerged arc furnace driven by differential backlash elimination. Background Technology

[0002] The top of an electric arc furnace is typically equipped with a circular guide rail and a charging trolley that runs along the guide rail. After the charging trolley moves to the corresponding discharge port of the discharge chute, it discharges the furnace charge into the designated location inside the furnace. To improve the stopping accuracy, existing charging trolleys can adopt differential backlash elimination drive, on-board power supply, and wireless control to reduce the impact of travel transmission backlash and unstable power supply to the sliding contact line on the furnace top charging operation.

[0003] However, existing improvements mainly focus on the trolley's positioning and power supply control, with insufficient attention paid to the dispersion of the furnace charge before it enters the chute's discharge port. When the charge is discharged from the hopper, it still easily forms concentrated columns, leading to localized piling. If fixed distribution plates are used, excessive spacing results in poor dispersion, while insufficient spacing easily leads to material stagnation or blockage. Simultaneously, dust generated during the feeding process is difficult to effectively extract along the material dispersion path. Therefore, how to ensure that the furnace charge undergoes buffering, rectification, and multi-stage dispersion before entering the chute's discharge port after the trolley stops at its designated point, and how to match the gas supply or extraction area with the charge dispersion area, are problems that existing top-mounted walking charging equipment for submerged arc furnaces still need to solve. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing technology has the disadvantage of uneven distribution of furnace charge and difficulty in controlling dust. To this end, we propose a high-precision wireless circular charging trolley for differential gap elimination driven electric arc furnace.

[0005] To achieve the above objectives, this application adopts the following technical solution: a high-precision wireless circular material feeding trolley for a differential backlash-free driven electric arc furnace, which is used in conjunction with a guide rail and a material discharge port of a material chute set on the top of the electric arc furnace. The trolley includes a frame mounted on the guide rail, and a set of traveling wheels is provided at the bottom of the frame. The set of traveling wheels is driven by a differential backlash-free driving method to move the frame along the guide rail to the corresponding position of the material discharge port of the material chute.

[0006] The frame is equipped with an electrical control box and a battery. The electrical control box is used for wireless control of the frame's movement and material feeding. The battery is used for power supply. The frame is equipped with a hopper. The hopper is connected to a gas conveying and suction main pipe. The gas conveying and suction main pipe is connected to a gas distribution branch pipe embedded in the hopper. The hopper is equipped with a primary horizontal material distribution hopper. The top of the primary horizontal material distribution hopper is equipped with a pressure equalization air guide seat that is connected to the gas distribution branch pipe. The hopper is equipped with a primary horizontal material distribution plate assembly inside and layered air guide holes on the side.

[0007] The bottom of the silo is slidably connected to a lifting secondary material distribution silo via a drive block. The lifting secondary material distribution silo is equipped with secondary longitudinal material distribution plates. A wedge-shaped pressure equalization air chamber is formed between the silo and the primary transverse material distribution silo. The wedge-shaped pressure equalization air chamber is connected to the stratified air guide hole. When the lifting secondary material distribution silo descends, a buffer rectification chamber is formed between the primary transverse material distribution silo and the lifting secondary material distribution silo. The lower opening of the wedge-shaped pressure equalization air chamber is connected to the buffer rectification chamber, so that the furnace charge is dispersed sequentially through the primary transverse material distribution plate group, the buffer rectification chamber and the secondary longitudinal material distribution plates before entering the discharge port of the discharge chute.

[0008] Preferably, the hopper includes an upper feeding section and a lower compression section, and the primary transverse distribution hopper is embedded in the compression section. The compression section is used to collect, guide and distribute the furnace charge before it enters the discharge port of the chute.

[0009] Preferably, the primary transverse material distribution plate group includes multiple transverse material distribution plates arranged at intervals along the interior of the primary transverse material distribution bin, with transverse material distribution gaps formed between adjacent transverse material distribution plates, used to divide the furnace charge entering the primary transverse material distribution bin into multiple transversely distributed material streams.

[0010] Preferably, the secondary longitudinal material distribution plate includes multiple longitudinal material distribution plates arranged at intervals along the interior of the lifting secondary material distribution bin, with longitudinal material distribution gaps formed between adjacent longitudinal material distribution plates. The extension direction of the longitudinal material distribution gaps intersects with the extension direction of the transverse material distribution gaps, so that the furnace charge passes through the transverse and longitudinal material distribution in sequence.

[0011] Preferably, the lifting secondary material distribution bin is slidably engaged with the drive block through a transmission component, and the transmission component is used to drive the lifting secondary material distribution bin to move up and down relative to the primary horizontal material distribution bin.

[0012] Preferably, when the lifting secondary material distribution bin descends relative to the primary horizontal material distribution bin, a variable-volume buffer rectifier cavity is formed between the primary horizontal material distribution bin and the lifting secondary material distribution bin.

[0013] Preferably, the layered air guide holes include a first layered air guide hole disposed on the upper part of the side of the primary horizontal material distribution bin, a second layered air guide hole disposed on the middle part of the side of the primary horizontal material distribution bin, and a third layered air guide hole disposed on the lower part of the side of the primary horizontal material distribution bin, and all three layered air guide holes are connected to the wedge-shaped pressure equalization air chamber.

[0014] Preferably, the wedge-shaped pressure equalization air chamber is formed between the compression section of the silo and the primary transverse distribution silo. The cross-section of the wedge-shaped pressure equalization air chamber has a gradually narrowing shape that is wider at the top and narrower at the bottom, and is used to guide the gas to the layered air guide holes at different height positions.

[0015] Preferably, the gas conveying and suction main pipe and the gas distribution branch pipe have a gas supply state and a suction state; in the gas supply state, gas enters the furnace charge; in the suction state, gas in the hopper is conveyed out and discharged by the suction main pipe.

[0016] Preferably, the electrical control box is equipped with a wireless communication module, which is used to receive remote control signals and provide feedback on the walking status, feeding status and battery power status of the chassis; the walking wheel set includes at least two drive units, which act on the walking transmission pair of the chassis through differential compensation or reverse preload to reduce the transmission backlash when the chassis starts and stops along the guide rail and stops at a fixed point.

[0017] The technical effects and advantages of this invention are as follows:

[0018] In this invention, by setting up a primary transverse distribution bin, a primary transverse distribution plate group, a lifting secondary distribution bin, and a secondary longitudinal distribution plate within the silo, the furnace charge undergoes transverse distribution, buffer rectification, and longitudinal distribution processes sequentially before entering the discharge port of the discharge chute. This reduces localized piling up caused by the furnace charge falling in a concentrated column form. Simultaneously, the buffer rectification cavity formed after the lifting secondary distribution bin descends increases the diffusion space of the furnace charge before entering the secondary longitudinal distribution plate, balancing the distribution effect and the smoothness of the discharge, and reducing the risk of material stagnation and blockage caused by excessively small distribution gaps. Furthermore, by forming gas delivery or suction channels corresponding to the furnace charge dispersion path through the gas conveying and suction main pipe, gas distribution branch pipe, layered gas guide holes, and wedge-shaped pressure equalization gas chamber, the dust generated during the charging process can be suctioned while assisting in the dispersion of the furnace charge, thereby improving the uniformity of the fixed-point charging at the top of the submerged arc furnace, the stability of the discharge, and the dust control effect. Attached Figure Description

[0019] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts:

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the guide rail and frame structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the battery and hopper of the present invention;

[0023] Figure 4 This is a schematic diagram of the gas delivery and suction main pipe and the gas distribution branch pipe of the present invention;

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the silo of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the first-stage transverse material distribution plate group and the second-stage longitudinal material distribution plate after the cross-section of the silo of the present invention;

[0026] Figure 7 This is a schematic diagram of the lifting-type two-stage material distribution bin of the present invention;

[0027] Figure 8 This is a schematic diagram showing the fit between the primary horizontal material distribution bin and the lifting secondary material distribution bin of the present invention;

[0028] Figure 9 This is a schematic diagram of the drive block and electric push rod of the present invention.

[0029] Legend: 1. Guide rail; 2. Feed chute discharge port; 3. Frame; 4. Wheel set; 5. Electrical control box; 6. Battery; 7. Hopper; 8. Gas conveying and suction main pipe; 9. Gas distribution branch pipe; 10. Primary transverse distribution hopper; 11. Pressure equalizing air guide seat; 12. Primary transverse distribution plate assembly; 13. Layered air guide hole; 14. Lifting secondary distribution hopper; 15. Secondary longitudinal distribution plate; 16. Wedge-shaped pressure equalizing air chamber; 17. Drive block; 18. Electric push rod. Detailed Implementation

[0030] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0031] Reference Figure 1-9As shown, this invention provides a technical solution: a high-precision wireless circular charging trolley for a submerged arc furnace with differential backlash elimination drive. This trolley, belonging to the category of furnace top-mounted charging equipment, works in conjunction with a guide rail 1 and a discharge chute outlet 2 located on the furnace top. It moves along a circular path on the furnace top and completes the precise, dispersed, and stable delivery of furnace charge at the corresponding discharge chute outlet 2. The guide rail 1 is arranged around the furnace top charging area, and the discharge chute outlet 2 is located within the furnace top charging area corresponding to the guide rail 1, used to receive the furnace charge discharged by the charging trolley. Existing circular charging trolleys for submerged arc furnaces typically rely on a traveling mechanism to move to the corresponding discharge outlet position before charging. To improve the trolley's stopping accuracy, existing technologies utilize differential backlash elimination drive structures, typically employing dual drive units, reverse pre-tensioning transmission components, or differential compensation transmission methods to reduce transmission backlash during start-up, reverse fine-tuning, and precise stopping, thereby improving the positioning accuracy of the trolley relative to the target charging position. In other words, the differential backlash elimination drive mainly addresses the issue of whether the furnace top charging trolley can accurately stop. However, in the actual furnace top charging process, even if the trolley frame can accurately align with the discharge port 2 of the charging chute, the furnace charge can still easily form a concentrated column after being discharged from the silo. This column tends to accumulate locally after entering the discharge port 2 of the charging chute, and dust generation during the charging process is also difficult to control. Therefore, it is necessary to improve the charging mechanism on the furnace top traveling trolley to ensure that the furnace charge undergoes dispersion, buffering, rectification, and gas-assisted treatment before entering the discharge port 2 of the charging chute.

[0032] To address the aforementioned issues, a high-precision wireless circular feeding trolley for a submerged arc furnace is provided. The trolley includes a frame 3 mounted above a guide rail 1. The frame 3 serves as the mobile body supporting the feeding mechanism. A set of wheels 4 is mounted at the bottom of the frame 3, supported on the upper surface of the guide rail 1 and used to drive the frame 3 along the guide rail 1, enabling the frame 3 to reach the target loading position corresponding to the discharge port 2 of the feeding chute. The set of wheels 4 can employ an existing differential backlash-eliminating drive structure. Differential compensation or pre-tensioning reduces the transmission backlash of the frame 3 during travel, braking, and positioning, thereby improving the stability of the frame 3 aligned with the discharge port 2 of the feeding chute. The differential backlash-eliminating drive structure primarily improves the travel and positioning accuracy of the frame 3.

[0033] An electrical control box 5 is installed on the frame 3. The control box 5 controls the frame 3's movement, stopping, feeding, gas conveying, and dust extraction. A wireless communication module can be installed inside the control box 5. This module receives remote control signals and provides feedback on the frame 3's movement status, feeding status, and battery level 6, enabling wireless control and status feedback for the material placing trolley. The frame 3 also contains a battery 6, which provides power to the walking wheel set 4, the electrical control box 5, and the feeding components on the frame 3. By installing the battery 6, the frame 3 reduces its reliance on the furnace top sliding contact line for power supply, thereby mitigating the impact of poor contact or short circuits in the high-dust environment of the submerged arc furnace top on the trolley's loading and unloading operations.

[0034] The chassis 3 houses a hopper 7, which serves as a temporary storage and feeding component for the furnace charge. It receives the charge to be fed and disperses, buffers, and rectifies it before it enters the discharge port 2 of the chute. A gas conveying and suction main pipe 8 is connected to the outer wall of the hopper 7. A gas distribution branch pipe 9 is connected to one side of the gas conveying and suction main pipe 8 and is embedded inside the hopper 7. The gas conveying and suction main pipe 8 and the gas distribution branch pipe 9 are interconnected. The gas conveying and suction main pipe 8 and the gas distribution branch pipe 9 can supply gas into the hopper 7 and can also switch to suction mode according to the dust conditions at the top of the submerged arc furnace to remove dust generated inside the hopper 7 and near the discharge port 2 of the chute. In other words, this gas path structure not only supplies gas but also performs dust removal when dust levels are high, thereby improving the adaptability of the on-board feeding mechanism to the complex charging environment at the top of the submerged arc furnace.

[0035] The silo 7 includes a feeding section and a compression section. The feeding section receives the furnace charge fed in by the upstream conveying equipment, and the compression section is used to install the primary transverse distribution silo 10 and structures related to gas regulation. The primary transverse distribution silo 10 is installed inside the compression section of the silo 7. The primary transverse distribution silo 10 receives the furnace charge falling from the feeding section of the silo 7 and performs primary transverse dispersion of the concentrated falling furnace charge. A pressure equalization gas guide seat 11 is provided at the top of the primary transverse distribution silo 10. The end of the gas distribution branch pipe 9 is embedded in the interior of the pressure equalization gas guide seat 11, so that gas can enter the pressure equalization gas guide seat 11 through the gas conveying and suction main pipe 8 and the gas distribution branch pipe 9, and then be guided into the interior of the silo 7 by the pressure equalization gas guide seat 11. The side of the primary transverse material distribution bin 10 is provided with layered air guide holes 13, which are configured in three groups. The first group of layered air guide holes 13 is located at the upper part of the side of the primary transverse material distribution bin 10, the second group of layered air guide holes 13 is located at the middle part of the side of the primary transverse material distribution bin 10, and the third group of layered air guide holes 13 is located at the lower part of the side of the primary transverse material distribution bin 10. By setting the layered air guide holes 13 at different heights, gas can enter the furnace charge falling area in the primary transverse material distribution bin 10 from multiple heights, reducing the local deflection caused when gas enters from a single position, and maintaining a good correspondence between the gas action area and the furnace charge falling area.

[0036] A wedge-shaped pressure equalization air chamber 16 is formed between the compression section of the hopper 7 and the primary transverse distribution hopper 10. The wedge-shaped pressure equalization air chamber 16 is a lateral gas regulating chamber with a cross-section that is wider at the top and narrower at the bottom. Its upper part is wider and its lower part is narrower. The wedge-shaped pressure equalization air chamber 16 is connected to the layered air guide hole 13, so that the gas in the wedge-shaped pressure equalization air chamber 16 can enter the primary transverse distribution hopper 10 through the layered air guide hole 13. The wedge-shaped pressure equalization air chamber 16 is used to guide, equalize and distribute the gas entering the hopper 7, so that the gas can enter the layered air guide hole 13 at different heights along the outside of the primary transverse distribution hopper 10. When the gas conveying and suction main pipe 8 and the gas distribution branch pipe 9 are switched to suction mode, the layered air guide hole 13, the wedge-shaped pressure equalization air chamber 16, the gas distribution branch pipe 9 and the gas conveying and suction main pipe 8 together form a suction channel. The wedge-shaped pressure equalization air chamber 16 can collect the dust-laden airflow inside the hopper 7 and near the discharge port 2 of the discharge chute, and guide the dust-laden airflow to the gas distribution branch pipe 9 and the gas conveying and suction main pipe 8, thereby reducing the escape of dust during the furnace top feeding process.

[0037] The primary horizontal material distribution bin 10 is internally embedded with a primary horizontal material distribution plate assembly 12. The primary horizontal material distribution plate assembly 12 is horizontally arranged inside the primary horizontal material distribution bin 10 and spaced apart along the interior of the primary horizontal material distribution bin 10. A horizontal material distribution gap is formed between adjacent primary horizontal material distribution plate assemblies 12. After the furnace charge enters the primary horizontal material distribution bin 10, it is divided into multiple horizontally distributed material streams by the primary horizontal material distribution plate assemblies 12. Since the thickness of each material stream is limited by the spacing between adjacent primary horizontal material distribution plate assemblies 12, the furnace charge that originally fell in a concentrated manner can be horizontally cut before entering the discharge port 2 of the discharge chute, thereby reducing the probability that the furnace charge will directly enter the discharge port 2 of the discharge chute in the form of a concentrated material column and form a local material pile.

[0038] The bottom of the hopper 7 is connected to a drive block 17, which is used to install and guide the lifting secondary material distribution hopper 14. The lifting secondary material distribution hopper 14 is embedded in the inner side of the drive block 17. The lifting secondary material distribution hopper 14 and the drive block 17 are slidably connected. The lifting secondary material distribution hopper 14 can slide longitudinally relative to the drive block 17 through a transmission component. The transmission component can be a cylinder, an electric push rod, a screw and slider mechanism, a gear and rack mechanism, or other drive mechanisms that can realize the longitudinal displacement of the lifting secondary material distribution hopper 14. The interior of the lifting secondary material distribution hopper 14 is embedded with secondary longitudinal material distribution plates 15. The secondary longitudinal material distribution plates 15 are distributed longitudinally inside the lifting secondary material distribution hopper 14. A longitudinal material distribution gap is formed between adjacent secondary longitudinal material distribution plates 15. The secondary longitudinal material distribution plates 15 are used to perform secondary dispersion of the transversely distributed material flow after being separated by the primary transverse material distribution plate group 12, so that the furnace charge forms a material distribution state that combines transverse dispersion and longitudinal dispersion before entering the discharge port 2 of the discharge chute.

[0039] Two drive blocks 17 each have a reserved slot on their inner side, and an electric push rod 18 is embedded inside the reserved slot. The telescopic end of the electric push rod 18 is connected to the corresponding side of the lifting secondary material distribution bin 14. Both electric push rods 18 are powered by the battery 6 and electrically connected to the electrical control box 5. The electrical control box 5 controls the synchronous extension and retraction of the two electric push rods 18 through the same control signal.

[0040] During the feeding operation, the frame 3 moves along the guide rail 1 under the drive of the walking wheel set 4. When the frame 3 moves to the target loading position corresponding to the discharge port 2 of the discharge chute, the electrical control box 5 controls the frame 3 to stop and enter the feeding state. After the furnace charge enters the hopper 7, it first falls into the primary horizontal distribution hopper 10. Since the primary horizontal distribution hopper 10 is equipped with a primary horizontal distribution plate group 12, the furnace charge is separated by the primary horizontal distribution plate group 12 during the falling process, forming multiple dispersed material streams arranged horizontally. After passing through the primary horizontal distribution hopper 10, the furnace charge continues to enter the lifting secondary distribution hopper 14. Due to the primary horizontal distribution plate group 12, the furnace charge is further separated into multiple dispersed material streams arranged horizontally. Group 12 is arranged horizontally, while the secondary longitudinal material distribution plate 15 is arranged vertically. The furnace charge is continuously dispersed by two material distribution structures in different directions in the junction area of ​​the primary horizontal material distribution bin 10 and the lifting secondary material distribution bin 14. The furnace charge is first cut horizontally and then dispersed vertically. After two material distribution processes in different directions, it is finally discharged from the lifting secondary material distribution bin 14 and enters the discharge port 2 of the discharge chute. Through the above two-stage cross material distribution, the distribution range of the furnace charge at the target charging position can be expanded, the concentrated falling of the furnace charge and local piling can be reduced, and the point charging uniformity of the walking material distribution trolley on the top of the submerged arc furnace can be improved.

[0041] When the feed rate is large, the particle size difference of the furnace charge is large, or the concentration of the furnace charge falling is high, the electrical control box 5 can control the operation of the transmission components to lower the lifting secondary distribution bin 14 relative to the primary transverse distribution bin 10. After the lifting secondary distribution bin 14 lowers, the distance between the primary transverse distribution plate group 12 and the secondary longitudinal distribution plate 15 increases, and a variable volume buffer rectification cavity is formed between the primary transverse distribution bin 10 and the lifting secondary distribution bin 14. After the furnace charge enters the buffer rectification cavity, the falling speed is slowed down, and the local... The pressure of the material accumulation is released, and the furnace charge can diffuse along the width direction before entering the secondary longitudinal material distribution plate 15. Then, the diffused furnace charge enters the multiple longitudinal material distribution gaps formed between the secondary longitudinal material distribution plates 15. This process can alleviate the problem of large pieces of material or mixed material directly rushing into the local gaps, reduce the situation of excessive material flow in the middle longitudinal material distribution gap and insufficient material flow in the side longitudinal material distribution gap, make the distribution of furnace charge entering the lifting secondary material distribution bin 14 more balanced, and take into account both the material distribution effect and the smoothness of material discharge.

[0042] When gas-assisted feeding is required, gas enters the gas distribution branch pipe 9 through the gas conveying and suction main pipe 8. Part of the gas enters the pressure equalization guide seat 11 and is guided into the hopper 7. The other part of the gas enters the wedge-shaped pressure equalization chamber 16 and enters the primary transverse distribution hopper 10 through the layered gas guide holes 13. Because the layered gas guide holes 13 are located at multiple heights in the primary transverse distribution hopper 10, the gas can enter the furnace charge falling area from different heights and, along with the furnace charge, pass through the distribution path formed by the primary transverse distribution plate group 12 and the secondary longitudinal distribution plate 15. When the lifting secondary distribution... When the hopper 14 descends and separates from the primary transverse distribution hopper 10, the lower opening of the wedge-shaped equalizing gas chamber 16 is connected to the buffer rectifier chamber formed between the lifting secondary distribution hopper 14 and the primary transverse distribution hopper 10. The gas entering the wedge-shaped equalizing gas chamber 16 can enter the buffer rectifier chamber through its lower opening, and under the guidance of the secondary longitudinal distribution plate 15, it enters the feed chute discharge port 2 with the furnace charge. In this way, the gas can act on the diffusion area of ​​the furnace charge before entering the secondary longitudinal distribution plate 15, so that the gas distribution area corresponds to the furnace charge dispersion area, reducing the flow deviation caused by the concentrated entry of gas into the local area.

[0043] When there is significant dust at the top of the submerged arc furnace or when dust generation is noticeable during the charging process, the gas conveying and suction main pipe 8 and the gas distribution branch pipe 9 can be switched to suction mode. In suction mode, the dust-laden airflow inside the hopper 7 and near the discharge port 2 of the discharge chute can be extracted through the layered air guide holes 13, the wedge-shaped pressure equalization chamber 16, the gas distribution branch pipe 9, and the gas conveying and suction main pipe 8, thereby reducing dust escape from the hopper 7 and near the discharge port 2 of the discharge chute. Since the same gas path can switch between gas supply and suction modes, this device can achieve gas-assisted distribution or dust extraction based on the furnace top conditions, improving the stability and environmental adaptability of the submerged arc furnace top charging process.

[0044] With the above structure, the frame 3 can move along the guide rail 1 and complete the fixed-point loading at the material discharge port 2 of the material discharge chute. The walking wheel set 4 can adopt the existing differential backlash elimination drive method to improve the parking accuracy of the frame 3. The battery 6 can provide on-board power for the trolley and reduce the impact of the sliding contact line power supply failure on the operation. The wireless communication module in the electrical control box 5 can realize remote control and status feedback. The primary transverse distribution bin 10, primary transverse distribution plate group 12, lifting secondary distribution bin 14, and secondary longitudinal distribution plate 15 in the hopper 7 work together to perform multi-level cross-dispersion of the furnace charge, changing the furnace charge from concentrated falling to multi-area dispersed falling; the lifting action of the lifting secondary distribution bin 14 can change the distance between the secondary longitudinal distribution plate 15 and the primary transverse distribution plate group 12, and form a variable volume buffer rectification cavity between the primary transverse distribution bin 10 and the lifting secondary distribution bin 14, so that the furnace charge can be decelerated, buffered and laterally diffused before entering the secondary longitudinal distribution plate 15; the gas conveying and suction main pipe 8, gas distribution branch pipe 9, pressure equalization gas guide seat 11, layered gas guide hole 13 and wedge-shaped pressure equalization gas cavity 16 together form a gas regulation structure that can deliver and suck gas, so that the gas action area corresponds to the furnace charge dispersion area.

[0045] While ensuring that the furnace top traveling trolley can stop at fixed points, the issues of dispersion, buffering, rectification and dust control between the discharge of furnace charge from the hopper 7 and the discharge port 2 of the charging chute are further addressed. This can improve the uniformity of furnace charge distribution at the target charging position of the furnace top traveling trolley, reduce the formation of local material piles after the furnace charge enters the discharge port 2 of the charging chute, and improve the dust control capability and operational stability during the furnace top charging process.

[0046] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A high-precision wireless circular feeding trolley for a differential backlash-free driven submerged arc furnace, used in conjunction with a guide rail and a feeding chute outlet located on the top of the submerged arc furnace, characterized in that... The vehicle includes a frame mounted on a guide rail, and a set of wheels at the bottom of the frame. The set of wheels is driven by a differential backlash-free drive method to move the frame along the guide rail to the corresponding position of the discharge port of the discharge chute. The frame is equipped with an electrical control box and a battery. The electrical control box is used for wireless control of the frame's movement and material feeding. The battery is used for power supply. The frame is equipped with a hopper. The hopper is connected to a gas conveying and suction main pipe. The gas conveying and suction main pipe is connected to a gas distribution branch pipe embedded in the hopper. The hopper is equipped with a primary horizontal material distribution hopper. The top of the primary horizontal material distribution hopper is equipped with a pressure equalization air guide seat that is connected to the gas distribution branch pipe. The hopper is equipped with a primary horizontal material distribution plate assembly inside and layered air guide holes on the side. A drive block is installed at the bottom of the hopper, and a lifting two-stage material distribution hopper is slidably connected to the drive block. A reserved slot is opened on the inner side of the drive block, and an electric push rod is embedded in the reserved slot. The telescopic end of the electric push rod is connected to the corresponding side of the lifting two-stage material distribution hopper. The lifting-type secondary material distribution bin is equipped with secondary longitudinal material distribution plates. A wedge-shaped pressure equalization air chamber is formed between the bin and the primary transverse material distribution bin. The wedge-shaped pressure equalization air chamber is connected to the stratified air guide hole. When the lifting-type secondary material distribution bin descends, a buffer rectification chamber is formed between the primary transverse material distribution bin and the lifting-type secondary material distribution bin. The lower opening of the wedge-shaped pressure equalization air chamber is connected to the buffer rectification chamber, so that the furnace charge is dispersed by the primary transverse material distribution plate group, the buffer rectification chamber and the secondary longitudinal material distribution plates in sequence and then enters the discharge port of the discharge chute.

2. The high-precision wireless circular feeding trolley for differential backlash elimination driven submerged arc furnace according to claim 1, characterized in that: The hopper includes an upper feeding section and a lower compression section. The primary transverse distribution hopper is embedded in the compression section. The compression section is used to collect, guide and distribute the furnace charge before it enters the discharge port of the chute.

3. The high-precision wireless circular feeding trolley for differential backlash elimination driven submerged arc furnace according to claim 2, characterized in that: The primary horizontal material distribution plate group includes multiple horizontal material distribution plates arranged at intervals along the interior of the primary horizontal material distribution bin. A horizontal material distribution gap is formed between adjacent horizontal material distribution plates, which is used to divide the furnace charge entering the primary horizontal material distribution bin into multiple horizontally distributed material streams.

4. The high-precision wireless circular feeding trolley for differential backlash elimination driven submerged arc furnace according to claim 3, characterized in that: The secondary longitudinal material distribution plate includes multiple longitudinal material distribution plates arranged at intervals along the interior of the lifting secondary material distribution bin. A longitudinal material distribution gap is formed between adjacent longitudinal material distribution plates. The extension direction of the longitudinal material distribution gap is intersected with the extension direction of the transverse material distribution gap, so that the furnace charge passes through the transverse material distribution and the longitudinal material distribution in sequence.

5. The high-precision wireless circular feeding trolley for differential backlash elimination driven submerged arc furnace according to claim 4, characterized in that: The lifting secondary material distribution bin is slidably engaged with the drive block through a transmission component, which is used to drive the lifting secondary material distribution bin to move up and down relative to the primary horizontal material distribution bin.

6. The high-precision wireless circular feeding trolley for differential backlash elimination driven submerged arc furnace according to claim 5, characterized in that: When the lifting secondary material distribution bin descends relative to the primary horizontal material distribution bin, a variable-volume buffer rectifier cavity is formed between the primary horizontal material distribution bin and the lifting secondary material distribution bin.

7. The high-precision wireless circular feeding trolley for differential backlash elimination driven submerged arc furnace according to claim 1, characterized in that: The layered air guide holes include a first layered air guide hole located on the upper part of the side of the primary horizontal material distribution bin, a second layered air guide hole located in the middle part of the side of the primary horizontal material distribution bin, and a third layered air guide hole located on the lower part of the side of the primary horizontal material distribution bin. All three layered air guide holes are connected to the wedge-shaped pressure equalization air chamber.

8. The high-precision wireless circular feeding trolley for differential backlash elimination driven submerged arc furnace according to claim 7, characterized in that: The wedge-shaped pressure equalization air chamber is formed between the compression section of the silo and the primary transverse distribution silo. The cross-section of the wedge-shaped pressure equalization air chamber has a gradually narrowing shape that is wider at the top and narrower at the bottom, and is used to guide the gas to the layered air guide holes at different height positions.

9. The high-precision wireless circular feeding trolley for differential backlash elimination driven submerged arc furnace according to claim 8, characterized in that: The gas conveying and suction main pipe and the gas distribution branch pipe have a gas supply state and a suction state; in the gas supply state, gas enters the furnace charge; in the suction state, the gas in the hopper is conveyed out and discharged by the suction main pipe.

10. The high-precision wireless circular feeding trolley for differential backlash elimination driven submerged arc furnace according to claim 1, characterized in that: The electrical control box is equipped with a wireless communication module, which is used to receive remote control signals and provide feedback on the walking status, feeding status and battery power status of the chassis. The walking wheel set includes at least two drive units, which act on the walking transmission pair of the chassis through differential compensation or reverse preload to reduce the transmission backlash when the chassis starts and stops along the guide rail and stops at a fixed point.

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