An electric furnace charging car

Abstract

The application provides an electric furnace charging trolley, belonging to the technical field of metal smelting, comprising a feeding frame and a guide frame connected to the upper side of the feeding frame through elastic elements, wherein the guide frame is downwardly inclined from right to left, and a vibrating element is arranged on the guide frame; a discharge cylinder is fixedly connected to the left side of the discharge end of the guide frame in communication, the discharge cylinder is arranged in a vertical state, can be vertically corresponded to the feeding port of an external intermediate frequency furnace, the diameter of the open end of the bottom of the discharge cylinder is smaller than the diameter of the feeding port of the external intermediate frequency furnace, a feeding auger is rotatably connected to the inside of the discharge cylinder, a first driving element is arranged on the guide frame, and the first driving element is used to drive the feeding auger to rotate and push the metal materials in the inside of the discharge cylinder downward; the application can reduce the possibility of the metal materials falling outside the feeding port of the external intermediate frequency furnace due to the influence of the motion inertia, and can also make the metal materials more uniformly enter the external intermediate frequency furnace, so as to prevent the metal materials from being locally accumulated in the inside of the external intermediate frequency furnace.

Description

Technical Field

[0001] This application relates to the field of metal smelting technology, specifically to an electric furnace charging car. Background Technology

[0002] An intermediate frequency furnace is a metal heating device designed based on the principle of intermediate frequency electromagnetic induction heating. It generates a strong electromagnetic field within the furnace body or induction coil by supplying intermediate frequency alternating current. When a metal material is placed in this electromagnetic field, electromagnetic induction induces eddy currents within the metal. As these eddy currents flow within the metal, electrical energy is rapidly converted into heat energy due to resistance, thus achieving rapid heating and melting of the metal. This heating method has several significant advantages. First, it heats up quickly, significantly shortening smelting time and improving production efficiency. Second, the concentrated and rapid heat conduction results in a uniform temperature distribution within the metal, reducing thermal stress and crack formation. Third, it offers precise temperature control, allowing for temperature adjustment according to process requirements, meeting the heating needs of different metals and different stages. Furthermore, it boasts high energy utilization, effectively reducing energy consumption and exhibiting excellent environmental performance. Intermediate frequency furnaces are used in the smelting, casting, and heat treatment of various metals such as aluminum, copper, steel, and zinc, and are particularly suitable for small and medium-sized metal production enterprises. Their flexible operation and excellent heating effect make them one of the most important pieces of equipment in the modern metallurgical industry, driving the continuous development and innovation of metal processing technology.

[0003] In the process of metal smelting using medium-frequency furnaces, specialized feeding equipment is typically required to deliver metal materials into the furnace to ensure smooth operation and continuous efficiency. This equipment usually includes conveyors, vibrating feeders, and bucket elevators, featuring automated control, continuous feeding, and uniform distribution. Proper configuration and operation of this equipment ensures a stable material supply, preventing production failures such as blockages, uneven material stacking, or material shortages, thereby improving the efficiency of the entire smelting process. Simultaneously, automated feeding systems significantly reduce the labor intensity and operational risks of manual operation, minimizing human error and ensuring safe production. Existing vibrating feeders typically consist of a hopper, a feeding bucket, and vibrating components. The hopper and feeding bucket often employ a fixed structure, which offers the advantage of a relatively simple structure and lower manufacturing and maintenance costs. This fixed structure not only enhances the overall stability of the equipment, ensuring less malfunction during continuous large-volume material transport, but also provides high operational reliability, making it suitable for continuous transport of large quantities of materials. This structure ensures smooth material flow during transportation, reduces the impact of uneven material flow, and has been proven through long-term operation to be stable and easy to maintain, providing a stable material supply guarantee for smelting production.

[0004] Referring to Chinese patent document CN221464336U, published on August 2, 2024, entitled "A Feeder for an Industrial Electric Furnace," the invention includes a feeder, a base, and a discharge hopper. The feeder is fixedly installed on the top of the base, and the discharge hopper is fixedly installed on one side of the feeder. The discharge hopper is equipped with a dispersion mechanism to disperse accumulated iron material, thereby preventing iron material from falling into the industrial electric furnace in clumps. The dispersion mechanism includes a motor fixedly installed on one side of the discharge hopper, with a rotating rod fixedly connected to the output end of the motor. One end of the rotating rod extends through to one side of the discharge hopper and is fixedly connected to a rotating roller. By setting up the dispersion mechanism and the reciprocating mechanism, the accumulated iron material in the discharge hopper can be dispersed while small areas of accumulated iron material in the discharge hopper can be agitated, thereby further improving the dispersion effect of the dispersion mechanism.

[0005] Referring to the above technical solution, when using vibration feeding to deliver metal materials into the intermediate frequency furnace, the falling trajectory of the metal materials usually follows a parabolic shape due to the inertia of the vibration during the fall. However, since the metal materials themselves are a mixture of granular and elongated shapes (these elongated and granular materials are cutting materials that fall during metal cutting processes), the actual landing points will also differ due to the weight differences between the different shapes. This may cause some metal materials to fall outside the feed inlet of the intermediate frequency furnace, thus creating an additional cleaning burden for personnel. Furthermore, the metal materials entering the intermediate frequency furnace will still converge towards a single point inside the furnace due to their own inertia, easily leading to uneven heating during subsequent melting and affecting the overall melting efficiency of the metal materials. Summary of the Invention

[0006] In view of this, this application provides an electric furnace charging car, which is mainly used to solve the problems that when metal materials are fed by vibration, the metal materials are prone to fall outside the inlet of the induction furnace due to the influence of motion inertia, and the metal materials are prone to local accumulation inside the induction furnace.

[0007] To solve the above-mentioned technical problems, this application provides an electric furnace charging car, including a feeding frame and a guide frame connected above it by an elastic element. The guide frame is inclined downward from right to left, and a vibrating element is provided on the guide frame. The discharge end on the left side of the guide frame is fixedly connected to a discharge cylinder, which is vertically arranged and can be vertically aligned with the feed port of an external medium-frequency furnace. The diameter of the open end of the discharge cylinder is smaller than the diameter of the feed port of the external medium-frequency furnace. A feeding auger is rotatably connected inside the discharge cylinder. A first driving element is provided on the guide frame. The first driving element is used to drive the feeding auger to rotate and push the metal material inside the discharge cylinder downward.

[0008] By adopting the above technical solution, during the feeding process of metal materials, an external transfer device is first used to accurately pour the metal materials into the guide frame, ensuring the smooth introduction of the metal materials. Then, the vibrating component generates excitation force, causing the guide frame to vibrate, making the metal materials flow to the left and orderly enter the next stage. After the metal materials enter the discharge cylinder along the guide frame, the first drive component drives the feeding auger to rotate. The feeding auger slowly and continuously pushes the metal materials downward through a spiral pushing action, so that the metal materials gradually fall into the feed port of the external induction furnace. Compared with the method of directly discharging metal materials from the guide frame, this design extends the movement path of the metal materials, effectively reducing the risk of overflow or deviation caused by motion inertia. As the feeding auger rotates continuously, the actual landing point of the metal material changes constantly on the circumferential surface, forming a dynamic distribution state. This facilitates the uniform entry of the metal material into the feed inlet of the induction furnace, avoiding local accumulation and blockage, ensuring the continuity and stability of the smelting process, and thus significantly improving the efficiency and product quality of metal smelting. While reducing the adverse effects caused by inertia and local accumulation, it also achieves uniform material supply, improves smelting efficiency, and reduces material loss and cleaning difficulty during operation, providing a strong guarantee for efficient and safe metal smelting.

[0009] Optionally, a guide frame is fixedly connected to the feeding frame. The guide frame is located directly above the guide frame. Receiving wing plates are provided on both the front and rear edges of the guide frame, and the material drop port at the bottom of the guide frame is located between the front and rear receiving wing plates.

[0010] By adopting the above technical solution, in the process of pouring metal materials into the guide frame through external transfer equipment, in order to ensure the smooth introduction of materials and reduce waste, the guide frame can effectively receive and guide the incoming metal materials. This ensures that most of the materials are stably guided to the predetermined position by the guide frame before entering the guide frame, thereby avoiding a large amount of material falling outside the guide frame. This not only prevents the scattering and loss of materials, but also significantly reduces the cleaning burden on on-site personnel and improves the efficiency and safety of the entire feeding process.

[0011] Optionally, the guide frame is provided with an auxiliary feeding mechanism for impeding, buffering and guiding the metal material inside the guide frame.

[0012] Optionally, the auxiliary feeding mechanism includes multiple pusher screws rotatably connected inside the guide frame, and the multiple pusher screws are arranged in a longitudinal array inside the guide frame. The guide frame is provided with a second driving member for driving the pusher screws to rotate, and the second driving member can make every two longitudinally adjacent pusher screws rotate in opposite directions.

[0013] By adopting the above technical solution, as the metal material slides to the left along the guide frame, the second drive unit drives all the pusher screws to rotate synchronously. Compared with the traditional vibration feeding method, this reduces the risk of uneven discharge caused by boundary effects. The pusher screws synchronously push the metal material at various longitudinal positions within the guide frame to the left, ensuring that materials in different areas move together, reducing the risk of material stagnation and accumulation at the periphery, thus effectively preventing uneven discharge and improving overall feeding and smelting efficiency. Furthermore, because the pusher screws uniformly push metal materials of different shapes and positions to the left during synchronous rotation, the overall material flowability and discharge uniformity are improved. This not only optimizes the material conveying process but also reduces production instability caused by boundary friction and local stagnation, providing a stable and uniform raw material input for subsequent smelting processes, thereby significantly improving production efficiency and product quality. Furthermore, granular metal materials will fall directly onto the bottom of the guide frame through the gap between the pusher screws, while clumped elongated metal materials will be confined above the pusher screws, causing metal materials of different shapes to be layered, so as to prevent clumped elongated metal materials from carrying granular metal materials directly down.

[0014] Optionally, the second driving component includes a driven gear at the right end of each pusher screw. The driven gears are all located outside the guide frame, and every two longitudinally adjacent driven gears mesh with each other. A servo motor is provided on the guide frame, and the driving gear provided on the output shaft of the servo motor can mesh with the foremost driven gear.

[0015] Optionally, the circumferential profile of the pusher screw is triangular, and the protruding part of its circumferential profile can be connected with the long strip of metal material.

[0016] By adopting the above technical solution, for elongated metal materials, during the feeding process of the pusher screw, when the protrusions on the circumferential contour of the pusher screw connect with the clumped elongated material, these protrusions exert squeezing or pulling forces on the material. Under the influence of these forces, the clumped elongated metal material is gradually separated and dispersed into more independent individual units, improving the fluidity and uniformity of the metal material, helping to eliminate clumping, ensuring the smooth progress of subsequent smelting work, and improving the efficiency and quality of the entire smelting process. This ensures that elongated metal materials can enter subsequent smelting stages in a more ideal state, laying a solid foundation for efficient and stable metal production.

[0017] Optionally, a ratchet roller is rotatably connected to the unloading end on the left side of the guide frame, and the ratchet roller is located above the push screw. A third driving component is provided on the guide frame to drive the ratchet roller to rotate.

[0018] By adopting the above technical solution, when the clumped elongated metal material passes through the ratchet roller, the third drive component rotates the ratchet roller counterclockwise. This not only further impedes the clumped elongated metal material located above the pusher screw, but also delays or controls the material's movement speed to a certain extent, helping to achieve finer separation. Furthermore, the ratchet teeth on the ratchet roller hook onto the clumped elongated metal material during rotation, applying further pulling or shearing forces using mechanical force, effectively separating the firmly adhered elongated material step by step, providing a more ideal material form for subsequent smelting.

[0019] Optionally, a frame plate is provided on the left side of the guide frame at the unloading end. Multiple inclined tooth plates are provided on the frame plate by springs, and the inclined tooth plates can abut against the ratchet teeth on the ratchet roller.

[0020] By adopting the above technical solution, as the ratchet roller continues to rotate, the helical tooth plate always maintains close contact with the ratchet teeth on the ratchet roller under the elastic action of the spring. This allows the helical tooth plate to actively scrape the surface of the ratchet teeth during the rotation of the ratchet roller, preventing a large amount of metal material from remaining, adhering to, or accumulating on the ratchet teeth. This helps to prevent equipment downtime caused by residue blockage or wear, thereby ensuring the efficient and safe operation of the entire metal smelting and conveying process.

[0021] Optionally, the first driving component includes a geared motor mounted on the guide frame. The geared motor can drive the feeding auger to rotate via a belt pulley drive, and the diameter of the pulley on the output shaft of the geared motor is smaller than the diameter of the pulley at the top of the feeding auger.

[0022] By adopting the above technical solution, the geared motor can drive the feeding auger to rotate at low speed in a differential transmission manner, thereby enabling the feeding auger to complete the pushing action of the metal material.

[0023] Optionally, the bottom of the feeding rack is provided with multiple casters, which can cooperate with the external feeding track to move the feeding rack in position.

[0024] By adopting the above technical solution, during the feeding process of metal materials, the feeding rack can be adjusted in position along the external feeding track by moving wheels, and can move flexibly back and forth between the external transfer equipment and the medium frequency furnace, thereby realizing efficient material conveying and feeding operations.

[0025] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0026] 1. During the feeding process of metal materials, a feeding auger is added to the feeding end of the guide frame to achieve the vertical drop of the metal materials. Compared with the conventional vibration feeding method, this can reduce the possibility of the metal materials falling outside the feed port of the external medium frequency furnace due to the influence of motion inertia. At the same time, it can also make the metal materials enter the feed port of the external medium frequency furnace more evenly, so as to avoid the local accumulation of metal materials inside the external medium frequency furnace, thereby improving the smelting efficiency of metal materials.

[0027] 2. During the feeding process of metal materials, the participation of the pusher screw can improve the uniformity of flow and increase the melting efficiency. The specially shaped pusher screw can exert a certain squeezing or pulling effect on the long strip metal materials, which can promote the separation of agglomerated long strip metal materials. At the same time, it can also separate the long strip metal materials from the granular metal materials, prevent agglomeration and particle falling, ensure the uniformity of the material layer, and facilitate subsequent melting.

[0028] 3. When the clumped long strip of metal material passes through the ratchet roller, the ratchet roller can block the long strip of metal material located above the pusher screw through its cooperation. It can also generate a pulling force through the ratchet teeth to effectively separate the clumped long strip of metal material, further improve the dispersion effect of the long strip of metal material, reduce the risk of clumping, and provide a better material state for subsequent smelting. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of an electric furnace charging car according to this application;

[0030] Figure 2 This is a front-view sectional view of the feeding rack and guide frame of this application;

[0031] Figure 3 This is a front-view sectional view of the discharge cylinder of this application;

[0032] Figure 4 This is a right view of the feeding rack and guide frame of this application;

[0033] Figure 5 This is a right-angle sectional view of the pusher screw of this application;

[0034] Figure 6 For this application Figure 3 A magnified view of a portion of region A in the middle.

[0035] Explanation of reference numerals in the attached drawings: 1. Feeding frame; 11. Elastic element; 12. Guide frame; 121. Receiving wing plate; 13. Vibrating element; 14. Guide frame; 2. Discharge cylinder; 21. Feeding auger; 22. First driving element; 221. Gear motor; 3. Auxiliary feeding mechanism; 31. Pushing screw; 32. Second driving element; 321. Driven gear; 322. Servo motor; 323. Driving gear; 4. Ratchet roller; 41. Third driving element; 42. Frame plate; 43. Spring; 44. Helical toothed plate; 5. Moving wheel. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will be combined with the embodiments of this application. Figures 1-6 The technical solutions of the embodiments of this application are clearly and completely described herein. All other embodiments obtained by those skilled in the art based on the described embodiments are within the scope of protection of this application.

[0037] Reference Figure 1 and Figure 2 This embodiment provides an electric furnace charging car, including a feeding frame 1, a guide frame 12, a vibrating element 13, and a feeding buffer mechanism. The guide frame 12 is connected above the feeding frame 1 by an elastic element 11, and the guide frame 12 is inclined downward from right to left. The vibrating element 13 is disposed on the guide frame 12. When the vibrating element 13 operates and generates an excitation force, it can cause the metal material to slide to the left along the guide frame 12.

[0038] Among them, reference Figure 1 , Figure 2 and Figure 3 The feeding buffer mechanism includes a discharge cylinder 2, a feeding auger 21, and a first driving component 22. The discharge cylinder 2 is fixedly connected to the discharge end on the left side of the guide frame 12. The discharge cylinder 2 is vertically arranged and can be vertically aligned with the feed inlet of the external intermediate frequency furnace. The diameter of the open end of the discharge cylinder 2 is smaller than the diameter of the feed inlet of the external intermediate frequency furnace. The feeding auger 21 is rotatably connected inside the discharge cylinder 2. The first driving component 22 is set on the guide frame 12 and is used to drive the feeding auger 21 to rotate and push the metal material inside the discharge cylinder 2 downward. The first driving component 22 includes a reduction motor 221 set on the guide frame 12. The reduction motor 221 can drive the feeding auger 21 to rotate through a belt pulley drive. The diameter of the belt pulley on the output shaft of the reduction motor 221 is smaller than the diameter of the belt pulley at the top of the feeding auger 21, thereby driving the feeding auger 21 to rotate at a low speed.

[0039] When feeding metal materials, the metal materials are first poured into the guide frame 12 using external transfer equipment. Then, the vibrating element 13 generates excitation force, causing the guide frame 12 to vibrate. Since the guide frame 12 is tilted downwards from right to left, the metal materials inside the guide frame 12 will slide to the left along the guide frame 12, completing the initial feeding action. After the metal materials enter the discharge cylinder 2 along the guide frame 12, the reduction motor 221 drives the feeding auger 21 to rotate at low speed. Under the push of the feeding auger 21, the metal materials will gradually fall into the feed port of the external induction furnace, thereby extending the movement path of the metal materials. Compared with the method of directly discharging the metal materials from the guide frame 12, this reduces the possibility of the metal materials falling outside the feed port of the external induction furnace due to the influence of motion inertia. In addition, the actual landing point of the metal material will continuously change on the circumference as the feeding auger 21 rotates, which can make the metal material enter the feed port of the external medium frequency furnace more evenly, so as to avoid the metal material from accumulating locally inside the external medium frequency furnace, thereby improving the metal smelting efficiency.

[0040] Reference Figure 1 and Figure 2 A guide frame 14 is fixedly connected to the feeding frame 1. The guide frame 14 is located directly above the guide frame 12. The front and rear sides of the guide frame 12 are provided with receiving wing plates 121, and the bottom of the guide frame 14 is located between the front and rear receiving wing plates 121.

[0041] During the process of pouring metal materials into the guide frame 12 with the help of external transfer equipment, since the feed inlet of the guide frame 14 is larger than that of the guide frame 12, the guide frame 14 can initially receive and guide the metal materials to prevent them from falling outside the guide frame 12 and causing additional cleaning burden to the personnel.

[0042] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5An auxiliary feeding mechanism 3 is provided inside the guide frame 12 to impede and buffer the metal material inside the guide frame 12 and guide its feeding. The auxiliary feeding mechanism 3 includes a pusher screw 31 and a second drive member 32. Multiple pusher screws 31 are arranged in a longitudinal array inside the guide frame 12 and are rotatably connected inside the guide frame 12. The second drive member 32 is arranged on the guide frame 12 and is used to drive the pusher screws 31 to rotate. The second drive member 32 can make every two longitudinally adjacent pusher screws 31 rotate in opposite directions. The second drive member 32 includes a driven gear 321, a servo motor 322 and a drive gear 323. Multiple driven gears 321 are arranged and fixedly connected to the right end of each pusher screw 31. The driven gears 321 are all located outside the guide frame 12, and every two longitudinally adjacent driven gears 321 mesh with each other. The servo motor 322 is arranged on the guide frame 12, and the drive gear 323 is arranged on the output shaft of the servo motor 322 and can mesh with the foremost driven gear 321. In addition, the circumferential profile of the pusher screw 31 is set in a triangular shape, and the protruding part of its circumferential profile can be connected with the long strip of metal material.

[0043] As the metal material slides to the left along the guide frame 12, the servo motor 322 drives the drive gear 323 to rotate. Under the influence of the meshing connection between the drive gear 323 and multiple driven gears 321, all the push screws 31 will rotate synchronously. Compared with the conventional vibration feeding method (due to the boundary effect, the front and rear inner walls of the guide frame 12 will cause friction and obstruction to the movement of the metal material, resulting in the flow speed of the metal material in the outer area being restricted, while the metal material in the central area is not restricted by the boundary and is more likely to flow freely), the push screws 31 can push all the metal material to the left, so that the metal material at each longitudinal point inside the guide frame 12 moves synchronously, reducing the possibility of the metal material in the outer area being stuck inside the guide frame 12 and causing uneven discharge, and further improving the smelting efficiency. Furthermore, for elongated metal materials, since the rotation directions of every two longitudinally adjacent pusher screws 31 are opposite, during the rotation of the pusher screw 31, when the protruding part of the circumferential contour of the pusher screw 31 hooks with the elongated metal material, the pusher screw 31 can exert a certain squeezing or pulling effect on the elongated metal material, promoting the separation of agglomerated elongated metal materials, which is beneficial to the subsequent smelting of the metal materials. Also, due to the presence of the pusher screws 31, granular metal materials will fall directly onto the inner bottom surface of the guide frame 12 through the gaps between the pusher screws 31, while agglomerated elongated metal materials will be confined above the pusher screws 31, causing metal materials of different shapes to separate, preventing agglomerated elongated metal materials from carrying granular metal materials directly down.

[0044] Reference Figure 1 , Figure 3 and Figure 6 The left side of the guide frame 12 is rotatably connected to the feed end of the ratchet roller 4, and the ratchet roller 4 is located above the push screw 31. The guide frame 12 is provided with a third drive component 41 for driving the ratchet roller 4 to rotate.

[0045] When the clump of elongated metal material passes through the ratchet roller 4, the third drive unit 41 drives the ratchet roller 4 to rotate counterclockwise. This not only further impedes the clump of elongated metal material located above the pusher screw 31, but also, when the ratchet on the ratchet roller 4 hooks with the clump of elongated metal material, the ratchet roller 4, in conjunction with the pusher screw 31, can generate a further pulling force on the clump of elongated metal material, thus promoting the effective separation of the clump of elongated metal material.

[0046] Additionally, refer to Figure 3 and Figure 6 A frame plate 42 is provided on the left side of the feeding end of the guide frame 12. Multiple inclined tooth plates 44 are provided on the frame plate 42 by means of springs 43, and the inclined tooth plates 44 can abut against the ratchet on the ratchet roller 4.

[0047] As the ratchet roller 4 continues to rotate, the helical tooth plate 44 will always be in contact with the ratchet of the ratchet roller 4 due to the elastic potential energy of the spring 43, thereby scraping the ratchet of the ratchet roller 4 to prevent a large amount of metal material from remaining on the ratchet of the ratchet roller 4 and affecting the normal rotation of the ratchet roller 4.

[0048] Reference Figure 1 and Figure 2 The bottom of the feeding rack 1 is equipped with multiple moving wheels 5, which can cooperate with the external feeding track to move the feeding rack 1.

[0049] During the feeding process of metal materials, the feeding rack 1 can move along the external feeding track by means of the moving wheels 5, so that the feeding rack 1 can be transferred between the external transfer equipment and the external medium frequency furnace to complete the feeding work.

[0050] The implementation principle of an electric furnace charging car in this application embodiment is as follows:

[0051] During the feeding of metal materials, external transfer equipment is first needed to accurately pour the metal materials into the guide frame 12 to ensure smooth material introduction. Since the inlet size of the guide frame 14 is larger than the inlet opening of the guide frame 12, the guide frame 12 can effectively receive and guide the incoming metal materials, preventing large amounts of material from scattering disorderly outside the guide frame 12 and avoiding unnecessary burdens on site cleanup. This ensures the orderly flow of materials and improves the stability and efficiency of subsequent processes.

[0052] Then, the vibrating element 13 generates an excitation force, causing the guide frame 12 to vibrate. Since the guide frame 12 is set to tilt from right to left, the vibration force causes the metal material to slide to the left along the guide frame 12, thus completing the initial feeding action. While the metal material slides along the guide frame 12, after entering the discharge cylinder 2, the reduction motor 221 starts, driving the feeding auger 21 to rotate at a low speed. Under the action of the pushing force, the metal material gradually moves downward along the auger and enters the feed inlet of the external induction furnace, thereby extending the movement path of the metal material and effectively reducing the inertial effect caused by high-speed movement, reducing the possibility of the material falling outside the feed inlet of the external induction furnace due to inertia.

[0053] Furthermore, as the feeding auger 21 continues to rotate, the landing point of the metal material will constantly change on the circumference. This dynamic movement method can promote a more uniform entry of the metal material into the feed inlet of the induction furnace, avoiding local accumulation of metal material in the furnace, thereby significantly improving the efficiency and uniformity of the smelting process.

[0054] Inside the guide frame 12, as the metal material slides to the left along the bottom surface of the guide frame 12, the servo motor 322 drives the drive gear 323 to rotate, which in turn drives multiple driven gears 321 to mesh synchronously. Driven by the gear mechanism, all the pusher screws 31 rotate synchronously. Compared to the traditional vibration feeding method (in the traditional method, the front and rear walls of the guide frame 12 cause friction and obstruction to the flow of metal material due to boundary effects, resulting in limited material flow velocity in the outer area, while the material in the central area flows more freely due to the lack of boundary constraints), the synchronous rotation of the pusher screws 31 can effectively push all metal material (whether at the edge or in the center) to the left, ensuring dynamic coordination of material at various positions within the guide frame 12. This reduces peripheral stagnation, avoids uneven discharge, and improves smelting efficiency, resulting in more uniform and stable output quality.

[0055] For elongated metal materials, since adjacent pusher screws 31 rotate in opposite directions, when the protrusions on the circumferential contour of the pusher screw 31 connect with the elongated material, they can apply compression or pulling action to the metal material, effectively promoting the separation of elongated agglomerated materials. This not only improves the flowability of the metal material but also provides a better raw material condition for subsequent smelting. In addition, due to the presence of the pusher screws 31, granular metal materials can directly pass through the gaps between the pusher screws 31 and fall onto the bottom surface of the guide frame 12, while agglomerated elongated metal materials are confined above the pusher screws 31. This achieves stratified processing of metal materials of different shapes, preventing agglomerated elongated metal materials from carrying granular metal materials and falling rapidly, thus avoiding impact on subsequent smelting operations.

[0056] When the clump of elongated metal material passes through the ratchet roller 4, the third drive component 41 drives the ratchet roller 4 to rotate counterclockwise. This not only further impedes the elongated material but also, through the connection between the ratchet teeth and the clumped material, pulls and breaks it apart, thus promoting the disintegration and separation of the clumped metal material. As the ratchet roller 4 continues to work, the inclined tooth plate 44, driven by the elastic potential energy of the spring 43, remains in constant contact with the ratchet teeth of the ratchet roller 4, providing a scraping effect and preventing a large amount of metal material from remaining on the ratchet roller 4. This ensures the continuous and smooth operation of the ratchet roller 4, avoids mechanical blockage, and provides a more uniform and dispersed material for subsequent melting.

[0057] The above description is the preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principles described in this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An electric furnace charging trolley, comprising a feeding frame and a guide frame connected above it by an elastic element, wherein the guide frame is inclined downward from right to left, and a vibrating element is provided on the guide frame, characterized in that: The material discharge end on the left side of the guide frame is fixedly connected to a discharge cylinder. The discharge cylinder is set in a vertical position and can be vertically aligned with the feed port of the external medium frequency furnace. The diameter of the open end of the discharge cylinder is smaller than the diameter of the feed port of the external medium frequency furnace. A feeding auger is rotatably connected inside the discharge cylinder. A first driving component is set on the guide frame. The first driving component is used to drive the feeding auger to rotate and push the metal material inside the discharge cylinder downward. An auxiliary feeding mechanism is provided inside the guide frame to impede and guide the metal material inside the guide frame. The auxiliary feeding mechanism includes multiple push screws rotatably connected inside the guide frame. The multiple push screws are arranged in a longitudinal array inside the guide frame. A second driving component is provided on the guide frame to drive the push screws to rotate. The second driving component can make every two longitudinally adjacent push screws rotate in opposite directions. A ratchet roller is rotatably connected to the unloading end on the left side of the guide frame, and the ratchet roller is located above the push screw. A third drive component is provided on the guide frame to drive the ratchet roller to rotate. A frame plate is provided on the unloading end on the left side of the guide frame. Multiple inclined tooth plates are provided on the frame plate by springs, and the inclined tooth plates can abut against the ratchet on the ratchet roller.

2. The electric furnace charging car according to claim 1, characterized in that: A guide frame is fixedly connected to the feeding frame. The guide frame is located directly above the material guide frame. Receiving wing plates are provided on both the front and rear edges of the material guide frame, and the material drop port at the bottom of the guide frame is located between the front and rear receiving wing plates.

3. The electric furnace charging car according to claim 1, characterized in that: The second driving component includes a driven gear at the right end of each pusher screw. The driven gears are all located outside the guide frame, and every two longitudinally adjacent driven gears mesh with each other. A servo motor is provided on the guide frame, and the drive gear provided on the output shaft of the servo motor can mesh with the foremost driven gear.

4. The electric furnace charging car according to claim 1, characterized in that: The circumferential profile of the pusher screw is triangular, and the protruding part of its circumferential profile can be connected with the long strip of metal material.

5. The electric furnace charging car according to claim 1, characterized in that: The first driving component includes a geared motor mounted on the guide frame. The geared motor can drive the feeding auger to rotate via a belt pulley drive, and the diameter of the pulley on the output shaft of the geared motor is smaller than the diameter of the pulley at the top of the feeding auger.

6. The electric furnace charging car according to claim 1, characterized in that: The bottom of the feeding rack is equipped with multiple casters, which can cooperate with the external feeding track to move the feeding rack.

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