Automatic frequency conversion charging trolley

Abstract

The application discloses an automatic variable-frequency charging trolley and belongs to the technical field of auxiliary equipment of intermediate frequency furnaces. The automatic variable-frequency charging trolley comprises a trolley frame, a charging hopper fixedly connected to one side of the top of the trolley frame, a spiral feeder rotatably connected to the inner bottom end of the charging hopper, and a control mechanism fixedly installed on the other side of the top of the trolley frame. The automatic variable-frequency mechanism is designed. According to the smelting requirements of the intermediate frequency furnace, an operator can operate the control mechanism to adjust the rotating speed of the spiral feeder, prevent the original materials in the furnace from being accumulated and nodulized due to too fast charging, and prevent the defects of heat waste and smelting period extension due to too slow charging. Meanwhile, the charging hopper is used for automatic charging during the charging process, manual charging is not needed, the charging precision is improved, and the safety hidden trouble factors are reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of auxiliary equipment for medium-frequency furnaces, and specifically relates to an automatic variable frequency feeding vehicle. Background Technology

[0002] Medium-frequency furnace charging equipment refers to automated or semi-automated mechanical systems specifically designed for use with medium-frequency induction furnaces. Its main function is to efficiently, accurately, and safely add furnace materials (such as scrap steel, pig iron, recycled materials, and alloys) into the furnace according to preset smelting process requirements. The core function of this type of equipment is to replace traditional manual pushing or loader-based charging methods, solving problems such as discontinuous charging, large deviations in composition control, high operational risks, and severe heat loss associated with manual operation. A typical medium-frequency furnace charging system usually consists of a storage silo, a vibrating feeder, a weighing sensor, a belt conveyor or vibrating conveyor trough, and a movable unloading trolley.

[0003] Existing medium-frequency furnace feeding equipment is mainly divided into two categories: manual feeding carts and fixed-rate feeding carts. Manual feeding carts rely on manual pushing and control of the feeding amount, which has problems such as high labor intensity, low feeding efficiency, and large feeding amount error. Moreover, the safety of operation in high-temperature environments is poor. At the same time, fixed-rate feeding carts are driven by a single rotation speed and cannot adjust the feeding rate according to the melting progress in the medium-frequency furnace (such as the melting stage, heating stage, and holding stage). This can easily lead to problems such as feeding too fast, causing raw materials to accumulate and form nodules in the furnace, or feeding too slowly, resulting in heat waste and prolonged melting cycle. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an automatic variable frequency feeding vehicle.

[0005] The technical solution adopted to solve the above technical problems is: an automatic frequency conversion feeding vehicle, including a frame, a feeding hopper fixedly connected to one side of the top of the frame, a screw feeder rotatably connected to the bottom of the inside of the feeding hopper, and a control mechanism fixedly installed on the other side of the top of the frame; The control mechanism is equipped with an automatic frequency conversion mechanism for the screw feeder, and a shaking mechanism is installed on the top of the frame and below the feeding hopper. The shaking mechanism facilitates the shaking and discharge of materials.

[0006] Preferably, wheels are installed on both the front and rear ends of the frame, and a first motor is fixedly installed on one side of the inner wall of the front and rear ends of the frame. One end of the output shaft of the two first motors is fixedly connected to the corresponding wheel, and an infrared thermometer is fixedly installed at the center of one side of the wheel.

[0007] With the above technical solution, when feeding the intermediate frequency furnace, two first motors are started, and the output shafts of both motors rotate to drive the connected wheels to rotate. The other two wheels then roll, moving the frame and thus moving the feeding hopper to the vicinity of the intermediate frequency furnace. The material in the feeding hopper is then discharged into the intermediate frequency furnace by a shaking mechanism, achieving automatic feeding. In addition, an infrared thermometer can detect the temperature of the intermediate frequency furnace. When the temperature exceeds the range, the control mechanism triggers an alarm to prevent safety hazards.

[0008] Preferably, the feeding hopper has a feed inlet at the top center, a discharge outlet at the bottom center, weight sensors fixedly installed on both sides of the bottom inner surface of the feeding hopper, and a level sensor fixedly installed at the front bottom of the feeding hopper.

[0009] With the above technical solution, the staff can first move the vehicle frame to the feeding area and add the material into the feeding hopper through the feed inlet. After feeding, the vehicle frame can be moved closer to the intermediate frequency furnace to replenish the furnace. At the same time, the weight sensor constantly monitors the weight of the material in the feeding hopper to ensure high accuracy of each material input into the intermediate frequency furnace, thereby adapting to the melting progress of the furnace. The material level sensor can monitor the remaining amount of material in the feeding hopper in real time to prevent the situation of no material during feeding and improve the melting effect of the intermediate frequency furnace.

[0010] Preferably, the control mechanism includes a housing fixedly connected to the other side of the top of the feeding hopper, an operation screen is provided at the front end of the housing, a support plate is fixedly connected to the center of the interior of the housing, a controller is fixedly installed at the top front end of the support plate, and an alarm is fixedly installed at the top of the housing.

[0011] Through the above technical solution, when the infrared thermometer can detect the high temperature of the medium-frequency furnace, the infrared thermometer transmits the information to the controller, which in turn transmits the information to the alarm, causing the alarm to sound and indicating that the equipment is abnormal. At the same time, the operator can control the entire device through the operation screen, and in an emergency, the entire device can be braked to prevent safety problems, thereby improving operational safety.

[0012] Preferably, the automatic frequency conversion mechanism includes a cylinder fixedly connected to the rear end of the top of the support plate. Two sliding grooves are formed at the rear end of the top of the support plate, and a frame is slidably connected to the two sliding grooves. A second motor is fixedly installed on the rear end of the top of the support plate, near the cylinder. A housing is fixedly connected to one side of the rear end of the top of the support plate. A movable shaft is fixedly connected to one end of the output shaft of the second motor. A first gear is fixedly connected to the center of the outer wall of the movable shaft. A first rotating cylinder is rotatably connected to one side of the housing. A second gear is fixedly connected to the outer wall of the first rotating cylinder. Multiple first insert rods are fixedly connected to the other side of the second gear. A second rotating cylinder is rotatably connected to the other side of the housing. A third gear is fixedly connected to the outer wall of the second rotating cylinder. Multiple second insert rods are fixedly connected to the other side of the third gear. A rotating shaft is rotatably connected to the front end between the two sides of the housing. A fourth gear is fixedly connected to the center of the outer wall of the rotating shaft. A fifth gear is fixedly connected to one side of the outer wall of the rotating shaft. A sixth gear is fixedly connected to the other side of the outer wall of the rotating shaft.

[0013] Through the above technical solution, the melting process in the medium-frequency furnace can be divided into a melting stage, a heating stage, and a holding stage. Each stage has a different material feeding rate. In the melting stage, which involves improving the material feeding efficiency, the cylinder is activated, and the piston pushes the frame, which in turn drives the second motor, which in turn drives the movable shaft. This causes the first gear to move closer to the third gear, allowing multiple second inserts to insert into the tooth grooves of the first gear. When the output shaft of the second motor rotates, it drives the movable shaft to rotate, which in turn drives the first gear to rotate. The multiple second inserts then drive the third gear to rotate, which in turn drives the sixth gear to rotate, thus driving the rotating shaft to rotate. This, in turn, drives the screw feeder to rotate at high speed, allowing for high-speed material feeding from the hopper, thus meeting the requirements of the medium-frequency furnace melting stage. In the heating stage, which involves stable material feeding, the cylinder... The piston's contraction causes the first gear to approach the second gear, allowing multiple first inserts to insert into the tooth grooves of the second gear. When the output shaft of the second motor rotates, the first gear, through the multiple first inserts, drives the second gear to rotate, which in turn drives the fifth gear to rotate, causing the rotating shaft to rotate. This, in turn, causes the screw feeder to rotate at a constant speed, thus feeding material into the hopper at a constant speed, meeting the requirements for the heating stage of the medium-frequency furnace. During the heat preservation stage, which involves low-speed feeding of materials, the piston in the cylinder drives the first gear to mesh directly with the fourth gear. When the output shaft of the second motor rotates, the first gear drives the fourth gear to rotate, which in turn drives the screw feeder to rotate at a low speed, feeding material into the hopper at a low speed, thus meeting the requirements for the heat preservation stage of the medium-frequency furnace. This achieves the requirements for all three stages of the medium-frequency furnace operation, which can be adjusted according to the actual situation.

[0014] Preferably, one end of the cylinder piston is fixedly connected to the frame, and the movable shaft is rotatably connected to the first and second rotating drums.

[0015] The above technical solution allows the movable shaft to move back and forth between the first and second rotating drums without affecting its rotation. This allows the rotation speed of the screw feeder to be changed at will, thus enabling adjustment of the material feeding rate.

[0016] Preferably, the diameter of the first gear is equal to that of the fifth gear, the diameter of the second gear is smaller than that of the fourth gear, the diameter of the third gear is larger than that of the sixth gear, the second gear meshes with the fifth gear, and the third gear meshes with the sixth gear.

[0017] Through the above technical solution, when the diameter of the second gear is smaller than that of the fourth gear and they mesh with each other, the rotational speed of the shaft decreases. When the diameter of the third gear is larger than that of the sixth gear and they mesh with each other, the rotational speed of the shaft increases. According to the requirements of medium frequency furnace smelting, the control mechanism can be operated to adjust the speed of the screw feeder, preventing the accumulation and nodule formation of raw materials in the furnace due to excessive feeding, and preventing the waste of heat and the extension of the smelting cycle due to excessively slow feeding. At the same time, the feeding process is automatically fed through the feeding hopper, eliminating the need for manual feeding, which not only improves the feeding accuracy but also reduces the factors that may cause safety hazards.

[0018] Preferably, the material shaking mechanism includes a support frame fixedly connected to one side of the top of the vehicle frame. Multiple swing arms are rotatably connected to both the front and rear ends of the support frame. A connecting base is provided at the top of the inner part of the support frame. A material discharge frame is rotatably connected to the multiple swing arms. A connecting seat is fixedly connected to the bottom of the connecting base. A fixed seat is fixedly connected to one side of the inner surface of the bottom of the support frame. A connecting shaft is fixedly connected to the center of the outer wall of the fixed seat. An eccentric wheel is fixedly connected to the center of the outer wall of the connecting shaft. A connecting rod is rotatably connected between the eccentric wheel and the connecting seat. A third motor is fixedly installed on the inner surface of the bottom of the support frame near the fixed seat. Synchronous pulleys are fixedly connected to the outer walls of the connecting shaft and the output shaft of the third motor. A synchronous belt is sleeved between two synchronous pulleys.

[0019] With the above technical solution, when the material falls onto the discharge rack, the third motor is started. The output shaft rotates, driving the connected synchronous wheel to rotate. In conjunction with the synchronous belt, it drives another synchronous wheel to rotate, which in turn drives the connecting shaft to rotate, which in turn drives the eccentric wheel to rotate, which in turn drives the connecting rod to swing, which in turn drives the connecting base frame to swing. Under the action of multiple swing rods, the discharge rack swings back and forth, which causes the material to shake and be discharged, thus aligning the material with the furnace opening of the medium-frequency furnace. This prevents the material from getting stuck on the discharge rack during the discharge process, improving the discharge accuracy and efficiency.

[0020] Preferably, the centers of the plurality of swing arms are rotatably connected to the outer wall of the support frame, and the connecting base is rotatably connected to the plurality of swing arms, since the centers of the plurality of swing arms are rotatably connected to the outer wall of the support frame.

[0021] With the above technical solution, when the connecting base frame swings to the right, it drives the discharge rack to swing to the left. The connecting shaft continues to rotate, which in turn drives the discharge rack to swing continuously, thereby achieving the shaking and feeding of materials and preventing material jamming.

[0022] Preferably, the discharge rack is located directly below the discharge port.

[0023] The above technical solution enables materials to be accurately fed from the feeding hopper to the discharge rack.

[0024] The beneficial effects of this invention are as follows: (1) By designing an automatic frequency conversion mechanism, the staff can operate the control mechanism according to the melting requirements of the medium frequency furnace, thereby adjusting the speed of the screw feeder, preventing the accumulation and nodule formation of raw materials in the furnace due to excessive feeding, and preventing the waste of heat and the extension of the melting cycle due to excessive feeding. At the same time, the feeding process is automatically fed through the feeding hopper, eliminating the need for manual feeding, which not only improves the feeding accuracy but also reduces the factors that may cause safety hazards.

[0025] (2) By designing an infrared thermometer and a weight sensor, when the infrared thermometer can detect the high temperature of the medium frequency furnace, the infrared thermometer transmits the information to the controller, which in turn transmits the information to the alarm, causing the alarm to sound and indicating that the equipment is abnormal. At the same time, the operator controls the entire device through the operation screen, and can brake the entire device in an emergency to prevent safety problems, thereby improving the safety of the operation. Meanwhile, the weight sensor constantly detects the weight of the material in the feeding hopper to ensure high accuracy of the material fed into the medium frequency furnace each time, thereby adapting to the melting progress of the medium frequency furnace.

[0026] (3) The present invention designs a shaking mechanism, which drives the material to shake and discharge, thereby aligning the material with the furnace opening of the medium frequency furnace and preventing the material from getting stuck on the discharge rack during the discharge process, thus improving the discharge accuracy and efficiency. Attached Figure Description

[0027] Figure 1 This is a first-view view of the present invention; Figure 2 This is a second-view view of the present invention; Figure 3 This is the overall front view of the present invention; Figure 4 This is an overall sectional view of the present invention; Figure 5 This is a cross-sectional view of the feeding hopper of the present invention; Figure 6 This is a schematic diagram of the overall structure of the automatic frequency conversion mechanism of the present invention; Figure 7 This is a schematic diagram of the internal structure of the automatic frequency conversion mechanism of the present invention; Figure 8 This is an exploded view of some parts of the automatic frequency conversion mechanism of the present invention; Figure 9 This is a schematic diagram of the material shaking mechanism of the present invention; Figure 10 This is an exploded view of some parts of the material shaking mechanism of the present invention.

[0028] Reference numerals: 1. Frame; 11. Wheel; 12. First motor; 13. Infrared thermometer; 2. Hopper; 21. Feed inlet; 22. Discharge outlet; 23. Screw feeder; 24. Weight sensor; 25. Level sensor; 3. Control mechanism; 301. Chassis; 302. Operation screen; 303. Support plate; 304. Controller; 305. Alarm; 4. Automatic frequency conversion mechanism; 401. Cylinder; 402. Slide rail; 403. Frame; 404. Second motor; 405. Housing; 406. Movable shaft; 407. First gear; 408. First rotating drum; 409. Second gear; 410. First insert rod; 411. Second rotating drum; 412. Third gear; 413. Second insert rod; 414. Rotating shaft; 415. Fourth gear; 416. Fifth gear; 417. Sixth gear; 5. Shaking mechanism; 501. Support frame; 502. Swing rod; 503. Connecting base frame; 504. Discharge rack; 505. Connecting seat; 506. Fixed seat; 507. Connecting shaft; 508. Eccentric wheel; 509. Connecting rod; 510. Third motor; 511. Synchronous pulley; 512. Synchronous belt. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] like Figures 1-4 As shown, an automatic frequency conversion feeding cart in this embodiment includes a frame 1. Wheels 11 are installed on both the front and rear ends of the frame 1. A first motor 12 is fixedly installed on one side of the inner wall of the front and rear ends of the frame 1. One end of the output shaft of each of the two first motors 12 is fixedly connected to the corresponding wheel 11. An infrared thermometer 13 is fixedly installed at the center of one side of each wheel 11. When feeding the medium frequency furnace, the two first motors 12 are started, and the output shafts of both motors rotate to drive the connected wheels 11 to rotate. The other two wheels 11 then roll, moving the frame 1 and thus moving the feeding hopper 2 to the vicinity of the medium frequency furnace. The material in the feeding hopper 2 is discharged into the medium frequency furnace by the shaking mechanism 5, realizing automatic feeding. The infrared thermometer 13 can detect the temperature of the medium frequency furnace. When the temperature exceeds the range, the control mechanism 3 triggers the alarm 305 to issue an alarm and prevent safety hazards.

[0031] like Figures 1-7 As shown, a feeding hopper 2 is fixedly connected to the top side of the frame 1. A screw feeder 23 is rotatably connected to the bottom of the feeding hopper 2. A feed inlet 21 is located at the center of the top of the feeding hopper 2, and a discharge outlet 22 is located at the center of the bottom of the feeding hopper 2. Weight sensors 24 are fixedly installed on both sides of the bottom inner surface of the feeding hopper 2, and a material level sensor 25 is fixedly installed at the bottom of the front end of the feeding hopper 2. The operator can first move the frame 1 to the feeding area and add the material into the feeding hopper 2 through the feed inlet 21. After feeding, the frame 1 is moved to the vicinity of the medium frequency furnace to replenish the medium frequency furnace. At the same time, the weight sensor 24 constantly detects the weight of the material in the feeding hopper 2 to ensure high accuracy of the material added to the medium frequency furnace each time, thereby adapting to the melting progress of the medium frequency furnace. The material level sensor 25 can monitor the remaining amount of material in the feeding hopper 2 in real time to prevent the situation of no material during feeding and improve the melting effect of the medium frequency furnace.

[0032] like Figures 1-6 As shown, a control mechanism 3 is fixedly installed on the other side of the top of the frame 1. The control mechanism 3 includes a housing 301 fixedly connected to the other side of the top of the feeding hopper 2. An operation screen 302 is provided at the front end of the housing 301. A support plate 303 is fixedly connected to the center of the interior of the housing 301. A controller 304 is fixedly installed at the front end of the top of the support plate 303. An alarm 305 is fixedly installed on the top of the housing 301. When the infrared thermometer 13 can detect the high temperature of the medium frequency furnace, the infrared thermometer 13 transmits the information to the controller 304, which in turn transmits the information to the alarm 305, causing the alarm 305 to sound an alarm and indicate that the equipment is abnormal. At the same time, the operator can control the entire device through the operation screen 302. In an emergency, the entire device can be braked to prevent safety problems and thus improve operational safety.

[0033] like Figures 1-8As shown, the control mechanism 3 is equipped with an automatic frequency conversion mechanism 4 for the screw feeder 23. The automatic frequency conversion mechanism 4 includes a cylinder 401 fixedly connected to the rear end of the top of the support plate 303. Two slide grooves 402 are opened at the rear end of the top of the support plate 303, and a frame 403 is slidably connected to the two slide grooves 402. A second motor 404 is fixedly installed at the rear end of the top of the support plate 303 and on the side near the cylinder 401. A housing 405 is fixedly connected to the rear end of the top of the support plate 303. A movable shaft 406 is fixedly connected to one end of the output shaft of the second motor 404. A first gear 407 is fixedly connected to the center of the outer wall of the movable shaft 406. A first drum 408 is rotatably connected to one side of the housing 405. A first gear 407 is fixedly connected to the outer wall of the first drum 408. The second gear 409 has multiple first insert rods 410 fixedly connected to its other side. A second rotating drum 411 is rotatably connected to the other side of the housing 405. A third gear 412 is fixedly connected to the outer wall of the second rotating drum 411. Multiple second insert rods 413 are fixedly connected to the other side of the third gear 412. A rotating shaft 414 is rotatably connected to the front end between the two sides of the housing 405. A fourth gear 415 is fixedly connected to the center of the outer wall of the rotating shaft 414. A fifth gear 416 is fixedly connected to one side of the outer wall of the rotating shaft 414, and a sixth gear 417 is fixedly connected to the other side of the outer wall of the rotating shaft 414. The melting process in the medium-frequency furnace can be divided into a melting stage, a heating stage, and a holding stage. The feeding speed of the material is different in each stage. During the melting stage, that is... To improve material feeding efficiency, cylinder 401 is activated, which pushes frame 403 via piston, thereby driving second motor 404, which in turn drives movable shaft 406. This causes first gear 407 to move closer to third gear 412, allowing multiple second inserts 413 to insert into the tooth grooves of first gear 407. When the output shaft of second motor 404 rotates, it drives movable shaft 406 to rotate, which in turn drives first gear 407 to rotate. The multiple second inserts 413 then drive third gear 412 to rotate, which in turn drives sixth gear 417 to rotate, thereby driving rotating shaft 414 to rotate. This, in turn, drives screw feeder 23 to rotate at high speed, thus feeding material into hopper 2 at high speed, meeting the requirements of the melting stage and heating stage of the medium-frequency furnace. During the initial feeding phase, i.e., when the material is being fed smoothly, the piston of cylinder 401 contracts, causing the first gear 407 to approach the second gear 409. This allows multiple first inserts 410 to insert into the tooth grooves of the second gear 409. When the output shaft of the second motor 404 rotates, the first gear 407 drives the second gear 409 to rotate via the multiple first inserts 410, which in turn drives the fifth gear 416 to rotate. This, in turn, drives the rotating shaft 414 to rotate, causing the screw feeder 23 to rotate at a uniform speed, thus uniformly feeding material into the hopper 2. This meets the requirements of the medium-frequency furnace during the heating phase. During the holding phase, i.e., when the material is fed at a low speed, the piston of cylinder 401 pushes the first gear 407 to mesh directly with the fourth gear 415.When the output shaft of the second motor 404 rotates, the first gear 407 drives the fourth gear 415 to rotate, thereby driving the screw feeder 23 to rotate at a low speed, thus feeding material into the hopper 2 at a low speed, thereby meeting the requirements of the medium-frequency furnace's heat preservation stage, and thus achieving the requirements of the three stages of the medium-frequency furnace. Operation can be adjusted according to actual conditions. One end of the piston of the cylinder 401 is fixedly connected to the frame 403. The movable shaft 406 is rotatably connected to the first rotating drum 408 and the second rotating drum 411, allowing the movable shaft 406 to move back and forth between the first rotating drum 408 and the second rotating drum 411 without affecting its own rotation. This allows for arbitrary changes in the speed of the screw feeder 23, realizing the adjustment of the material feeding rate. The diameter of the first gear 407 is equal to that of the fifth gear 416, while the diameter of the second gear 409 is smaller. When the diameter of the fourth gear 415 and the third gear 412 is larger than that of the sixth gear 417, and the second gear 409 meshes with the fifth gear 416, and the third gear 412 meshes with the sixth gear 417, and the diameter of the second gear 409 is smaller than that of the fourth gear 415 and they mesh with each other, the rotational speed of the shaft 414 decreases. When the diameter of the third gear 412 is larger than that of the sixth gear 417 and they mesh with each other, the rotational speed of the shaft 414 increases. According to the melting requirements of the medium-frequency furnace, the control mechanism 3 can be operated to adjust the rotational speed of the screw feeder 23 to prevent the raw materials from accumulating and forming nodules in the furnace due to excessively fast feeding, and to prevent the defects of heat waste and prolonged melting cycle due to excessively slow feeding. At the same time, the feeding process is automatically fed through the feeding hopper 2, eliminating the need for manual feeding, which not only improves the feeding accuracy but also reduces the factors that may cause safety hazards.

[0034] like Figures 1-10As shown, a material shaking mechanism 5 is installed on the top of the frame 1 and below the feeding hopper 2. The material shaking mechanism 5 facilitates the shaking and discharge of materials. The material shaking mechanism 5 includes a support frame 501 fixedly connected to one side of the top of the frame 1. Multiple swing rods 502 are rotatably connected to the front and rear ends of the support frame 501. A connecting base 503 is provided at the top of the inside of the support frame 501. A discharge frame 504 is rotatably connected to the multiple swing rods 502. A connecting seat 505 is fixedly connected to the bottom of the connecting base 503. A fixing seat 506 is fixedly connected to one side of the bottom inner surface of the support frame 501. A connecting shaft 507 is fixedly connected to the center of the outer wall of the support frame 501. An eccentric wheel 508 is fixedly connected to the center of the outer wall of the connecting shaft 507. A connecting rod 509 is rotatably connected between the eccentric wheel 508 and the connecting seat 505. A third motor 510 is fixedly installed on the bottom inner surface of the support frame 501 near the fixed seat 506. Synchronous pulleys 511 are fixedly connected to the outer wall of the connecting shaft 507 and the outer wall of the output shaft of the third motor 510. A synchronous belt 512 is sleeved between the two synchronous pulleys 511. When the material falls onto the discharge rack 504, the third motor 510 is started, and the output... The rotation of the shaft drives the connected synchronous pulley 511 to rotate, which, in conjunction with the synchronous belt 512, drives another synchronous pulley 511 to rotate. This, in turn, drives the connecting shaft 507 to rotate, which in turn drives the eccentric wheel 508 to rotate. This, in turn, drives the connecting rod 509 to swing, which in turn drives the connecting base frame 503 to swing. Under the action of multiple swing rods 502, the discharge rack 504 swings back and forth, causing the material to vibrate and be discharged. This ensures that the material is aligned with the furnace opening of the medium-frequency furnace, preventing the material from getting stuck on the discharge rack 504 during the discharge process, thus improving the discharge accuracy and efficiency. The center of the multiple swing rods 502... All are rotatably connected to the outer wall of the support frame 501. The connecting base frame 503 is rotatably connected to multiple swing rods 502. Since the centers of multiple swing rods 502 are rotatably connected to the outer wall of the support frame 501, when the connecting base frame 503 swings to the right, it drives the discharge frame 504 to swing to the left. The connecting shaft 507 continues to rotate, thereby driving the discharge frame 504 to swing continuously, thereby realizing the shaking and feeding of materials to prevent material jamming. The discharge frame 504 is located directly below the discharge port 22, so that the material falls through the discharge port 22 on the feeding hopper 2 onto the discharge frame 504 for precise feeding.

[0035] The working principle of this embodiment is as follows: When feeding the medium frequency furnace, the two first motors 12 are started, and the output shafts of both motors rotate to drive the connected wheels 11 to rotate. The other two wheels 11 then roll, thereby moving the frame 1 and thus moving the feeding hopper 2 to the vicinity of the medium frequency furnace, so that the discharge rack 504 is aligned with the furnace opening of the medium frequency furnace. When the intermediate frequency furnace is in the melting stage, which improves the material feeding efficiency, the cylinder 401 is activated. The piston pushes the frame 403, which in turn drives the second motor 404, which in turn drives the movable shaft 406. This causes the first gear 407 to move closer to the third gear 412, allowing multiple second insert rods 413 to insert into the tooth grooves of the first gear 407. When the output shaft of the second motor 404 rotates, it drives the movable shaft 406 to rotate, which in turn drives the first gear 407 to rotate. The multiple second insert rods 413 then drive the third gear 412 to rotate, which in turn drives the sixth gear 417 to rotate, thereby driving the rotating shaft 414 to rotate. This, in turn, drives the screw feeder 23 to rotate at high speed. The material is fed into the hopper 2 at high speed to meet the requirements of the melting stage of the medium-frequency furnace. When the material falls onto the discharge rack 504, the third motor 510 is started. The output shaft rotates to drive the connected synchronous wheel 511 to rotate. In conjunction with the synchronous belt 512, it drives another synchronous wheel 511 to rotate, which in turn drives the connecting shaft 507 to rotate, which in turn drives the eccentric wheel 508 to rotate, which in turn drives the connecting rod 509 to swing, which in turn drives the connecting base frame 503 to swing. Under the action of multiple swing rods 502, the discharge rack 504 swings back and forth, which causes the material to shake and be discharged, so that the material is aligned with the furnace opening of the medium-frequency furnace and is discharged, preventing the material from getting stuck on the discharge rack 504 during the discharge process. When the medium frequency furnace is in the heating stage, which is the stable feeding of materials, the piston of cylinder 401 contracts, thereby driving the first gear 407 to approach the second gear 409, so that multiple first insert rods 410 are inserted into the tooth grooves of the second gear 409. When the output shaft of the second motor 404 rotates, the first gear 407 drives the second gear 409 to rotate through the multiple first insert rods 410, thereby driving the fifth gear 416 to rotate, thereby driving the rotating shaft 414 to rotate, thereby driving the screw feeder 23 to rotate at a uniform speed, thus feeding the material into the feeding hopper 2 at a uniform speed, thereby meeting the requirements of the heating stage of the medium frequency furnace. When the medium frequency furnace is in the heat preservation stage, that is, the material is fed at low speed, the piston of the cylinder 401 drives the first gear 407 to mesh directly with the fourth gear 415. When the output shaft of the second motor 404 rotates, the first gear 407 drives the fourth gear 415 to rotate, thereby driving the screw feeder 23 to rotate at low speed, thus feeding the material into the feeding hopper 2 at low speed, thereby meeting the requirements of the medium frequency furnace in the heat preservation stage. The speed of the screw feeder 23 can be adjusted by the operator through the operation screen 302. The controller 304 controls the information of the entire equipment. At the same time, when the infrared thermometer 13 can detect the high temperature of the medium frequency furnace, the infrared thermometer 13 transmits the information to the controller 304, which in turn transmits the information to the alarm 305, causing the alarm 305 to sound an alarm and indicate that the equipment is abnormal. Furthermore, a weight sensor 24 is installed inside the feeding hopper 2, which can detect the weight of the material inside the feeding hopper 2 at all times, ensuring high accuracy of the material fed into the medium frequency furnace each time, thereby adapting to the melting progress of the medium frequency furnace.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. An automatic variable frequency feeding vehicle, comprising a frame (1), characterized in that: A feeding hopper (2) is fixedly connected to one side of the top of the frame (1), and a screw feeder (23) is rotatably connected to the bottom of the inside of the feeding hopper (2). A control mechanism (3) is fixedly installed on the other side of the top of the frame (1). The control mechanism (3) is equipped with an automatic frequency conversion mechanism (4) for the screw feeder (23). A shaking mechanism (5) is installed on the top of the frame (1) and below the feeding hopper (2). The shaking mechanism (5) facilitates the shaking and discharge of materials.

2. The automatic variable frequency feeding vehicle according to claim 1, characterized in that, Wheels (11) are installed on both the front and rear ends of the frame (1). A first motor (12) is fixedly installed on one side of the inner wall of the front and rear ends of the frame (1). One end of the output shaft of the two first motors (12) is fixedly connected to the corresponding wheel (11). An infrared thermometer (13) is fixedly installed at the center of one side of the wheel (11).

3. The automatic variable frequency feeding vehicle according to claim 1, characterized in that, The top center of the feeding hopper (2) is provided with a feeding port (21), the bottom center of the feeding hopper (2) is provided with a discharging port (22), weight sensors (24) are fixedly installed on both sides of the bottom inner surface of the feeding hopper (2), and a material level sensor (25) is fixedly installed at the bottom of the front end of the feeding hopper (2).

4. The automatic variable frequency feeding vehicle according to claim 1, characterized in that, The control mechanism (3) includes a housing (301) fixedly connected to the other side of the top of the feeding hopper (2). The front end of the housing (301) is provided with an operation screen (302). A support plate (303) is fixedly connected to the center inside the housing (301). A controller (304) is fixedly installed at the front end of the top of the support plate (303). An alarm (305) is fixedly installed on the top of the housing (301).

5. An automatic variable frequency feeding vehicle according to claim 4, characterized in that, The automatic frequency conversion mechanism (4) includes a cylinder (401) fixedly connected to the top rear end of the support plate (303). Two sliding grooves (402) are provided at the top rear end of the support plate (303), and a frame (403) is slidably connected to the two sliding grooves (402). A second motor (404) is fixedly installed at the top rear end of the support plate (303) near the cylinder (401). A housing (405) is fixedly connected to one side of the top rear end of the support plate (303). A movable shaft (406) is fixedly connected to one end of the output shaft of the second motor (404). A first gear (407) is fixedly connected to the center of the outer wall of the movable shaft (406). A first rotating drum (408) is rotatably connected to one side of the housing (405). A second gear (409) is fixedly connected to the outer wall of the box (408). A plurality of first insert rods (410) are fixedly connected to the other side of the second gear (409). A second rotating cylinder (411) is rotatably connected to the other side of the box (405). A third gear (412) is fixedly connected to the outer wall of the second rotating cylinder (411). A plurality of second insert rods (413) are fixedly connected to the other side of the third gear (412). A rotating shaft (414) is rotatably connected to the front end between the two sides of the box (405). A fourth gear (415) is fixedly connected to the center of the outer wall of the rotating shaft (414). A fifth gear (416) is fixedly connected to one side of the outer wall of the rotating shaft (414). A sixth gear (417) is fixedly connected to the other side of the outer wall of the rotating shaft (414).

6. An automatic variable frequency feeding vehicle according to claim 5, characterized in that, One end of the piston of the cylinder (401) is fixedly connected to the frame (403), and the movable shaft (406) is rotatably connected to the first rotating drum (408) and the second rotating drum (411).

7. An automatic variable frequency feeding vehicle according to claim 5, characterized in that, The diameter of the first gear (407) is equal to that of the fifth gear (416), the diameter of the second gear (409) is smaller than that of the fourth gear (415), the diameter of the third gear (412) is larger than that of the sixth gear (417), the second gear (409) meshes with the fifth gear (416), and the third gear (412) meshes with the sixth gear (417).

8. An automatic variable frequency feeding vehicle according to claim 3, characterized in that, The material shaking mechanism (5) includes a support frame (501) fixedly connected to one side of the top of the frame (1). Multiple swing arms (502) are rotatably connected to both the front and rear ends of the support frame (501). A connecting base frame (503) is provided at the top of the inside of the support frame (501). A material discharge frame (504) is rotatably connected to the multiple swing arms (502). A connecting seat (505) is fixedly connected to the bottom of the connecting base frame (503). A fixing seat (506) is fixedly connected to one side of the inner surface of the bottom of the support frame (501). The outer wall of the fixing seat (506) contains... A connecting shaft (507) is fixedly connected to the center of the connecting shaft (507). An eccentric wheel (508) is fixedly connected to the center of the outer wall of the connecting shaft (507). A connecting rod (509) is rotatably connected between the eccentric wheel (508) and the connecting seat (505). A third motor (510) is fixedly installed on the bottom inner surface of the support frame (501) near the fixed seat (506). Synchronous pulleys (511) are fixedly connected to the outer wall of the connecting shaft (507) and the outer wall of the output shaft of the third motor (510). A synchronous belt (512) is sleeved between the two synchronous pulleys (511).

9. An automatic variable frequency feeding vehicle according to claim 8, characterized in that, The centers of the plurality of swing arms (502) are rotatably connected to the outer wall of the support frame (501), and the connecting base frame (503) is rotatably connected to the plurality of swing arms (502).

10. An automatic variable frequency feeding vehicle according to claim 8, characterized in that, The feed rack (504) is located directly below the feed inlet (22).

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