Multi-layer screening detection device for corn thresher based on image sensor

Abstract

The invention discloses a multi-layer screening detection device for a corn thresher based on an image sensor, and relates to the technical field of corn threshing and screening, the multi-layer screening detection device comprises a bottom frame, a screening assembly is arranged at the bottom end of the interior of the bottom frame, the screening assembly comprises a grain storage shell, and the grain storage shell is fixedly installed at the bottom end of the interior of the bottom frame; a servo electric cylinder is fixedly installed at the bottom end of the interior of the grain storage shell, a transverse plate is fixed to the top face of the telescopic end of the servo electric cylinder, a first concentric-square-shaped frame is fixed to the top face of the transverse plate, round rods are fixed to the four edges of the top face of the first concentric-square-shaped frame, a second concentric-square-shaped frame is fixed to the top ends of the four round rods, and a filter screen is fixed to the top of the inner wall of the first concentric-square-shaped frame; according to the corn kernel screening device, high-quality corn kernels and low-quality corn kernels can be separately discharged by detecting the corn kernels, and the production quality of the corn kernels is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of corn threshing and screening, and particularly to a multi-layer screening and detection device for a corn thresher based on an image sensor. Background Art

[0002] A corn thresher is an agricultural device used to process dry corn. Its main function is to efficiently separate corn cobs from corn kernels to obtain high-quality corn grains. Through mechanized operation, the corn thresher can quickly complete large-scale corn harvesting work, improving agricultural production efficiency and effectively reducing labor costs.

[0003] The patent with the patent number CN221559001U discloses an impurity preliminary screening device used in conjunction with a corn thresher, including a screening machine frame. One side of the screening machine frame is connected by a hinge to a rotating bracket. The end of the rotating bracket is equipped with a raw material guiding plate. One side of the raw material guiding plate is provided with a side support rod. A chute is opened on the surface of the outer protective cover. A slidable positioning inner bolt is arranged inside the chute. An external positioning nut is threadedly connected outside the chute. A pull rod is sleeved between the positioning inner bolt and the external positioning nut. The other end of the pull rod is connected to the end of the side support rod. The positioning inner bolt and the external positioning nut pull the side support rod through the pull rod, and the side support rod drives the rotating bracket and the raw material guiding plate to rotate and adjust the guiding angle to receive the raw material pipes protruding at different angles, so that the raw material pipes can complete the addition of raw materials without entering the screening mesh basket, facilitating the disassembly, installation, maintenance, and repair of the screening mesh basket.

[0004] However, the existing impurity preliminary screening device used in conjunction with a corn thresher has the following problems: When in use, the screened corn kernels are discharged together and piled up, resulting in the mixing of corn kernels of different qualities, which affects the screening effect of the corn kernels. Therefore, we propose a multi-layer screening and detection device for a corn thresher based on an image sensor. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a multi-layer screening and detection device for a corn thresher based on an image sensor, which solves the problems raised in the above background art.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: A multi-layer screening and detection device for a corn thresher based on an image sensor, including a chassis, on the top surface of the chassis is fixedly installed a machine shell, on the top surface of the machine shell is provided a feed inlet, at the bottom of the front of the machine shell is provided an ear outlet, the machine shell is set to be inclined forward on the top surface of the chassis, on the right side of the machine shell is fixedly installed a drive module, the drive module includes a circular shell and a motor, the circular shell is fixed on the right side of the machine shell, the motor is fixed on the left side of the inner wall of the circular shell, the left and right sides of the inner wall of the machine shell are penetrated and rotatably installed with a stirring rod, the right side of the stirring rod is fixedly connected to the left end of the motor shaft of the drive module, at the bottom end of the inside of the machine shell is penetrated and fixed with a grid hole frame, and at the bottom end of the inside of the chassis is provided a classification and screening component; The surface of the chassis is fixedly connected with a detection frame, and an image sensor is installed on the inner wall of the detection frame, and a classification and pushing mechanism is installed on the inner wall of the detection frame; The classification and pushing mechanism is composed of two cylinders and two push plates, and the cylinders are electrically connected with the image sensor; The classification and screening component includes a grain storage shell, the grain storage shell is fixedly installed at the bottom end of the inside of the chassis, at the bottom of the front of the grain storage shell is provided a slag outlet, at the top of the right side of the grain storage shell is provided a large grain outlet, at the bottom of the left side of the grain storage shell is provided a small grain outlet, at the bottom end of the inside of the grain storage shell is fixedly installed a servo electric cylinder, the top surface of the telescopic end of the servo electric cylinder is fixed with a cross plate, on the top surface of the cross plate is fixed a first U-shaped frame, on the four sides of the top surface of the first U-shaped frame are fixedly installed four round rods, the top ends of the four round rods are fixed with a second U-shaped frame, on the top of the inner wall of the first U-shaped frame is fixed a filter screen, on the top of the inner wall of the second U-shaped frame is fixed another filter screen, the filter screen on the second U-shaped frame moves up and down reciprocally to screen the corn kernels, the filter screen on the second U-shaped frame leaves the large and plump corn kernels, the large and plump corn kernels are discharged from the large grain outlet of the grain storage shell, the shriveled corn kernels fall downward through the gaps in the filter screen on the second U-shaped frame, the filter screen on the first U-shaped frame moves up and down reciprocally to screen the shriveled corn kernels, the small and shriveled corn kernels are discharged from the small grain outlet of the grain storage shell, the filter screen on the first U-shaped frame screens out the corn debris, and the corn debris is discharged from the slag outlet of the grain storage shell, and guiding components are arranged on both sides of the bottom surface of the cross plate; The guiding components include two cylinders, the two cylinders are fixed on both sides of the bottom surface of the cross plate, at the top ends of the two cylinders are respectively fixed two springs, the ends of the two springs far away from the two cylinders are respectively fixed with two T-shaped columns, the outer walls of the two T-shaped columns are slidably connected with the inner walls of the two cylinders, and the bottom surfaces of the two T-shaped columns are fixedly connected with the bottom end of the inside of the grain storage shell, the springs reciprocally expand and contract in the cylinders, and under the elastic force of the springs, the violent shaking of the cross plate during the up and down reciprocating movement is reduced; Fan-shaped edge devices are arranged on the outer walls of the two cylinders, and a vibration device is arranged opposite to the fan-shaped edge devices.

[0007] According to the above technical solution, the feed inlet of the casing is located on the back of the driving module. A number of arc-shaped plates are arranged on the outer wall of the stirring rod. The aforenamed arc-shaped plates of the stirring rod are located in the middle inside the casing. The outer wall of the first loop-shaped frame is in sliding contact with the inner wall of the grain storage shell. The outer wall of the second loop-shaped frame is in sliding contact with the inner wall of the grain storage shell. The mesh gaps of the upper filter screen are larger than those of the lower filter screen. The two cylinders are located on the left and right sides of the servo electric cylinder.

[0008] According to the above technical solution, the fan edge device includes two horizontal ring plates, two double rollers, four long rods and a number of fan blades. The two horizontal ring plates are respectively fixed on the top outer walls of the two cylinders. The two double rollers respectively penetrate and are rotatably installed on the outer walls of the two horizontal ring plates. The outer walls of the two double rollers are in rolling contact with the left and right sides of the inner wall of the grain storage shell. The four long rods are respectively fixed in pairs on the front and back of the rotating shafts of the two double rollers. The aforenamed fan blades are respectively fixed on the outer walls of the four long rods. During the reciprocating rotation of the fan blades, the fan blades fan the corn debris accumulated at the lower edge of the grain storage shell towards the middle.

[0009] According to the above technical solution, the fan edge device further includes two U-shaped rods, four connecting plates and four semi-cylindrical shells. The two U-shaped rods respectively penetrate and are fixed on the outer walls of the two horizontal ring plates. The four connecting plates are respectively fixed at the two ends of the two U-shaped rods away from each other. The four semi-cylindrical shells are respectively fixed on the sides of the four connecting plates away from the two U-shaped rods. During the up and down reciprocating movement of the semi-cylindrical shells, the semi-cylindrical shells prevent the corn debris from falling onto the double rollers.

[0010] According to the above technical solution, the two double rollers are located on the sides of the two horizontal ring plates away from each other. The four semi-cylindrical shells respectively cover the outer walls of the two double rollers.

[0011] According to the above technical solution, the vibration device includes two U-shaped frames, two shaft plates, two rubber rollers and two T-shaped plates. The two U-shaped frames are respectively fixed at the bottoms directly opposite to the four semi-cylindrical shells. The two shaft plates are respectively hinged at the bottoms of the inner walls of the two U-shaped frames. The two rubber rollers are rotatably installed at the bottoms of the inner walls of the two shaft plates. The two T-shaped plates are fixed on the left and right sides of the inner wall of the grain storage shell. When the rubber rollers strike the T-shaped plates, the T-shaped plates generate an amplitude during the striking process. The T-shaped plates transmit the vibration to the grain storage shell, and the grain storage shell vibrates the corn debris on the wall down.

[0012] According to the above technical solution, the vibration device further includes two double-arc plates, two arc-shaped elastic pieces, and two square plates. The two double-arc plates are respectively fixed to the tops of the two U-shaped frames on the sides close to each other. The two arc-shaped elastic pieces are respectively fixed to the middle of the sides of the two double-arc plates close to each other. The two square plates are fixed to the sides of the two shaft plates close to each other. One side of the two square plates close to each other is fixedly connected to one end of the two arc-shaped elastic pieces away from the two double-arc plates. Under the elastic force of the arc-shaped elastic pieces, the shaft plate resets in the U-shaped frame, enabling the rubber roller to stably strike the T-shaped plate.

[0013] According to the above technical solution, the top surfaces of the two T-shaped plates are respectively on the movement trajectories of the outer walls of the two rubber rollers, and the two arc-shaped elastic pieces are respectively located in the middle directly opposite the four semi-arc shells.

[0014] The present invention provides a multi-layer screening and detection device for a corn thresher based on an image sensor. It has the following beneficial effects: (1) After screening, the corn kernels in the present invention fall into the detection frame. At this time, the image sensor in the detection frame detects the quality of the corn. When the quality of the corn kernels meets the preset value, the image sensor sends an electrical signal to the cylinder. After receiving the electrical signal, the cylinder starts and drives the push plate to move leftward. The push plate will push the high-quality corn kernels out from the left side of the detection frame. If the image sensor detects that the quality of the corn kernels is lower than the preset value, the cylinder will drive the push plate to move rightward and push the corn kernels out from the right side of the detection frame, thereby enabling the detection of the quality of the corn kernels and facilitating subsequent separate processing.

[0015] (2) In the present invention, through the cooperation of the grain storage shell, the servo electric cylinder, the cross plate, the first loop-shaped frame, the round rod, the second loop-shaped frame, the filter screen, the cylinder, and the spring with the T-shaped column, the filter screen on the second loop-shaped frame reciprocates up and down to screen the corn kernels. The filter screen on the second loop-shaped frame retains the large and plump corn kernels, and the large and plump corn kernels are discharged from the large-grain outlet of the grain storage shell. The shriveled corn kernels fall downward through the gaps in the filter screen on the second loop-shaped frame. The filter screen on the first loop-shaped frame reciprocates up and down to screen the shriveled corn kernels. The small and shriveled corn kernels are discharged from the small-grain outlet of the grain storage shell. The filter screen on the first loop-shaped frame screens out the corn debris, and the corn debris is discharged from the slag outlet of the grain storage shell, enabling the device to screen the corn kernels according to their sizes when screening the corn kernels, ensuring the quality of the corn kernels, preventing the poor quality of the screened corn kernels caused by the device's difficulty in screening according to the sizes of the corn kernels, and the spring reciprocates telescopically in the cylinder. Under the elastic force of the spring, the violent shaking of the cross plate during its up and down reciprocating movement is reduced, preventing the device from running smoothly due to the violent shaking of the cross plate.

[0016] (3) With the setting of the fan edge device in the present invention, the horizontal ring plate, double rollers, long rod, fan blades, U-shaped rod and connecting plate cooperate with the semi-circular shell. During the reciprocating rotation of the fan blades, the fan blades fan the corn debris accumulated at the lower edge of the grain storage shell towards the middle, preventing the corn debris from accumulating at the lower edge of the grain storage shell and making it difficult to clean the corn debris at the edge of the grain storage shell. Moreover, during the up-and-down reciprocating movement of the semi-circular shell, the semi-circular shell blocks the corn debris from falling onto the double rollers, preventing a large amount of corn debris from adhering to the double rollers and causing poor rolling effect of the double rollers.

[0017] (4) With the setting of the vibration device in the present invention, the U-shaped frame, shaft plate, rubber roller, T-shaped plate, double arc plate and arc-shaped elastic piece cooperate with the square plate. The rubber roller strikes the T-shaped plate, and during the process of being struck, the T-shaped plate generates an amplitude. The T-shaped plate transmits the vibration to the grain storage shell, and the grain storage shell vibrates the corn debris on its wall surface, preventing a large amount of dust from adhering to the wall surface of the grain storage shell and causing poor slag discharging effect of the equipment. Moreover, under the elastic force of the arc-shaped elastic piece, the shaft plate resets in the U-shaped frame, enabling the rubber roller to stably strike the T-shaped plate and preventing the rubber roller from being difficult to reset and resulting in poor knocking effect. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the whole of the present invention; Figure 2 is a schematic diagram of the internal components of the present invention; Figure 3 is a cross-sectional schematic diagram at the grain storage shell of the present invention; Figure 4 is of the present invention Figure 3 a partial enlarged schematic diagram at A in; Figure 5 is a schematic diagram of the fan edge device of the present invention; Figure 6 is of the present invention Figure 5 a partial enlarged schematic diagram at B in; Figure 7 is a schematic diagram of the vibration device of the present invention; Figure 8 is of the present invention Figure 7 a partial enlarged schematic diagram at C in.

[0019] In the figure: 1. Underframe; 2. Machine housing; 3. Driving module; 4. Stirring rod; 5. Grid hole frame; 51. Sieving assembly; 511. Grain storage shell; 512. Servo electric cylinder; 513. Horizontal plate; 514. First return-shaped frame; 515. Round rod; 516. Second return-shaped frame; 517. Filter screen; 52. Guiding assembly; 521. Cylinder; 522. Spring; 523. T-shaped column; 6. Fan edge device; 61. Horizontal ring plate; 62. Double rollers; 63. Long rod; 64. Fan blades; 65. U-shaped rod; 66. Connecting plate; 67. Semi-circular shell; 7. Vibration device; 71. U-shaped frame; 72. Axle plate; 73. Rubber roller; 74. T-shaped plate; 75. Double arc plates; 76. Arc-shaped elastic piece; 77. Square plate; 8. Detection frame. Detailed implementation manner

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] Please refer to Figures 1-8 , an embodiment of the present invention is: A multi-layer screening and detection device for a corn threshing machine based on an image sensor, including an underframe 1, a machine housing 2 is fixedly installed on the top surface of the underframe 1, a feed inlet is opened on the top surface of the machine housing 2, an ear outlet is opened at the bottom of the front of the machine housing 2, the machine housing 2 is arranged to be inclined forward on the top surface of the underframe 1, a driving module 3 is fixedly installed on the right side of the machine housing 2, the driving module 3 includes a round shell and a motor, the round shell is fixed on the right side of the machine housing 2, the motor is fixed on the left side of the inner wall of the round shell, a stirring rod 4 is penetrated and rotatably installed on the left and right sides of the inner wall of the machine housing 2, the right side of the stirring rod 4 is fixedly connected to the left end of the motor rotating shaft of the driving module 3, a grid hole frame 5 is penetrated and fixed at the bottom end inside the machine housing 2, the feed inlet of the machine housing 2 is located on the back of the driving module 3, and a number of arc-shaped plates are arranged on the outer wall of the stirring rod 4, and the number of arc-shaped plates of the stirring rod 4 is located in the middle inside the machine housing 2; The surface of the underframe 1 is fixedly connected with a detection frame 8, an image sensor is installed on the inner wall of the detection frame 8, and a classification and pushing mechanism is installed on the inner wall of the detection frame 8; The classification and pushing mechanism is composed of two cylinders and two push plates. The cylinders are electrically connected to the image sensor. After the sieved corn kernels enter the detection frame 8, the image sensor in the detection frame 8 will detect the quality of the corn. When the quality of the corn kernels meets the preset value, the image sensor will send an electrical signal to the cylinders. After receiving the electrical signal, the cylinders will start and drive the push plates to move to the left. The push plates will push the high-quality corn kernels to be discharged from the left side of the detection frame 8. If the image sensor detects that the quality of the corn kernels is lower than the preset value, the cylinders will drive the push plates to move to the right and push the corn kernels to be discharged from the right side of the detection frame 8, so as to detect the quality of the corn kernels and facilitate subsequent separate processing; At the inner bottom end of the chassis 1, a screening component 51 is provided. The screening component 51 includes a grain storage shell 511 which is fixedly installed at the inner bottom end of the chassis 1. At the bottom of the front surface of the grain storage shell 511, a slag outlet is provided. At the top right of the grain storage shell 511, a large grain outlet is provided. At the bottom left of the grain storage shell 511, a small grain outlet is provided. At the inner bottom end of the grain storage shell 511, a servo electric cylinder 512 is fixedly installed. The top surface of the telescopic end of the servo electric cylinder 512 is fixed with a cross plate 513. The top surface of the cross plate 513 is fixed with a first U-shaped frame 514. At the four sides of the top surface of the first U-shaped frame 514, round rods 515 are fixedly installed. The top ends of the four round rods 515 are fixed with a second U-shaped frame 516. At the top of the inner wall of the first U-shaped frame 514, a filter screen 517 is fixedly installed. At the top of the inner wall of the second U-shaped frame 516, another filter screen 517 is fixedly installed. The outer wall of the first U-shaped frame 514 is in sliding contact with the inner wall of the grain storage shell 511. The outer wall of the second U-shaped frame 516 is in sliding contact with the inner wall of the grain storage shell 511. The mesh gap of the upper filter screen 517 is larger than that of the lower filter screen 517. The corn kernels falling from the grid hole frame 5 enter the grain storage shell 511. The filter screen 517 on the second U-shaped frame 516 moves up and down reciprocally to screen the corn kernels. The filter screen 517 on the second U-shaped frame 516 leaves the large and plump corn kernels. The large and plump corn kernels are discharged from the large grain outlet of the grain storage shell 511. The shriveled corn kernels fall downward through the gaps in the filter screen 517 on the second U-shaped frame 516. The filter screen 517 on the first U-shaped frame 514 moves up and down reciprocally to screen the shriveled corn kernels. The small and shriveled corn kernels are discharged from the small grain outlet of the grain storage shell 511. The filter screen 517 on the first U-shaped frame 514 screens out the corn debris. The corn debris is discharged from the slag outlet of the grain storage shell 511, enabling the equipment to screen the corn kernels according to their sizes when screening corn kernels, ensuring the quality of the corn kernels, and avoiding the situation that in the process of screening corn kernels by a multi-layer screening mechanism, it is difficult to screen according to the sizes of the corn kernels, resulting in poor quality of the screened corn kernels; On both sides of the bottom surface of the cross plate 513, a guiding component 52 is provided. The guiding component 52 includes two cylinders 521 which are fixed on both sides of the bottom surface of the cross plate 513. At the inner top ends of the two cylinders 521, two springs 522 are respectively fixedly installed. The ends of the two springs 522 far away from the two cylinders 521 are respectively fixed with two T-shaped columns 523. The outer walls of the two T-shaped columns 523 are slidably connected with the inner walls of the two cylinders 521. The bottom surfaces of the two T-shaped columns 523 are fixedly connected with the inner bottom end of the grain storage shell 511. The two cylinders 521 are located on the left and right sides of the servo electric cylinder 512. The springs 522 reciprocally expand and contract in the cylinders 521. Under the elastic force of the springs 522, the violent shaking of the cross plate 513 during the up and down reciprocating movement is reduced, avoiding the situation that during the process of screening corn kernels by a multi-layer screening mechanism, the cross plate 513 shakes violently, resulting in unsmooth operation of the equipment.

[0022] During use, the chassis 1 supports the machine housing 2. The user starts the drive module 3 on the machine housing 2, and the motor shaft in the drive module 3 starts to rotate in reverse. The shaft of the motor drives the stirring rod 4 to rotate in reverse, and the stirring rod 4 rotates in reverse in the machine housing 2. The user puts dry corn cobs into the feeding port of the machine housing 2. During the process of the dry corn cobs falling downward, they come into contact with the stirring rod 4. The arc-shaped plate on the stirring rod 4 slaps the dry corn cobs, causing the corn kernels on the dry corn cobs to fall off. The corn kernels of the dry corn cobs fall into the grid hole frame 5. The grid hole frame 5 blocks the downward fall of the corn cobs, and the corn kernels fall through the gaps in the grid hole frame 5. The corn cobs roll forward and out of the ear outlet of the machine housing 2. Since during the process of screening the corn kernels, some corn kernels are plump and some are shriveled, it is difficult to separate the plump corn kernels from the shriveled ones during screening. At this time, the chassis 1 supports the grain storage shell 511. The user starts the servo cylinder 512 in the grain storage shell 511, and the telescopic end of the servo cylinder 512 starts to move up and down reciprocally. The telescopic end of the servo cylinder 512 drives the cross plate 513 to move up and down reciprocally. The cross plate 513 drives the first loop-shaped frame 514 to move up and down reciprocally. The first loop-shaped frame 514 drives the round rod 515 to move up and down reciprocally. The round rod 515 drives the second loop-shaped frame 516 to move up and down reciprocally. At the same time, the first loop-shaped frame 514 drives the filter screen 517 to move up and down reciprocally. The second loop-shaped frame 516 also drives the filter screen 517 to move up and down reciprocally. The corn kernels that fall from the grid hole frame 5 enter the grain storage shell 511. The filter screen 517 on the second loop-shaped frame 516 moves up and down reciprocally to screen the corn kernels. The filter screen 517 on the second loop-shaped frame 516 retains the large and plump corn kernels, and the large and plump corn kernels are discharged from the large grain outlet of the grain storage shell 511. The shriveled corn kernels fall downward through the gaps in the filter screen 517 on the second loop-shaped frame 516. The filter screen 517 on the first loop-shaped frame 514 moves up and down reciprocally to screen the shriveled corn kernels. The small and shriveled corn kernels are discharged from the small grain outlet of the grain storage shell 511. The filter screen 517 on the first loop-shaped frame 514 screens out the corn debris, and the corn debris is discharged from the slag outlet of the grain storage shell 511. This enables the device to screen the corn kernels according to their size during the screening process, ensuring the quality of the corn kernels and preventing the device from being difficult to screen according to the size of the corn kernels during use, thus avoiding the problem of poor quality of the screened corn kernels caused by the difficulty in screening according to the size of the corn kernels during the screening process by the multi-layer screening mechanism.

[0023] While the telescopic end of the servo cylinder 512 drives the cross plate 513 to reciprocate up and down, the cross plate 513 drives the cylinder 521 to reciprocate up and down, the cylinder 521 drives the spring 522 to reciprocate up and down, the cylinder 521 slides up and down reciprocally on the T-shaped column 523, and the spring 522 reciprocally expands and contracts in the cylinder 521. Under the elastic force of the spring 522, the violent shaking of the cross plate 513 during the reciprocating up and down movement is reduced, preventing the cross plate 513 from shaking violently when the equipment is in use, thereby avoiding the problem that the cross plate 513 shakes violently during the process of the multi-layer screening mechanism screening corn kernels, resulting in unsmooth operation of the equipment.

[0024] Please refer to Figures 1-8 Based on the above embodiments, in another embodiment of the present invention, there is also a fan edge device 6 and a vibration device 7. Among them, the fan edge device 6 is provided on the outer walls of the two cylinders 521. The fan edge device 6 includes two horizontal ring plates 61, two double rollers 62, four long rods 63 and a number of fan blades 64. The two horizontal ring plates 61 are respectively fixed on the top outer walls of the two cylinders 521. The two double rollers 62 respectively penetrate and are rotatably installed on the outer walls of the two horizontal ring plates 61. The outer walls of the two double rollers 62 are in rolling contact with the left and right sides of the inner wall of the grain storage shell 511. The four long rods 63 are respectively fixed in pairs on the front and back of the rotating shafts of the two double rollers 62. A number of fan blades 64 are respectively fixed on the outer walls of the four long rods 63. The two double rollers 62 are located on the side where the two horizontal ring plates 61 are away from each other. The double rollers 62 reciprocally roll on the wall surface of the grain storage shell 511. The double rollers 62 drive the long rods 63 to rotate reciprocally, and the long rods 63 drive the fan blades 64 to rotate reciprocally. During the reciprocating rotation of the fan blades 64, the fan blades 64 fan the corn debris accumulated at the lower edge of the grain storage shell 511 towards the middle, avoiding the problem that the corn debris is difficult to clean at the edge of the grain storage shell 511 due to the accumulation of corn debris at the lower edge of the grain storage shell 511 during the process of the multi-layer screening mechanism screening corn kernels.

[0025] The fan edge device 6 further includes two U-shaped rods 65, four connecting plates 66 and four semi-circular shells 67. The two U-shaped rods 65 respectively penetrate and are fixed on the outer walls of the two horizontal ring plates 61. The four connecting plates 66 are respectively fixed at the two ends of the two U-shaped rods 65 away from each other. The four semi-circular shells 67 are respectively fixed on the sides of the four connecting plates 66 away from the two U-shaped rods 65. The four semi-circular shells 67 respectively cover the outer walls of the two double rollers 62. During the reciprocating up and down movement of the semi-circular shells 67, the semi-circular shells 67 block the corn debris from falling onto the double rollers 62, avoiding the problem that a large amount of corn debris adheres to the double rollers 62 during the process of the multi-layer screening mechanism screening corn kernels, resulting in poor rolling effect of the double rollers 62.

[0026] A vibration device 7 is arranged directly opposite to the fan edge device 6. The vibration device 7 includes two U-shaped frames 71, two shaft plates 72, two rubber rollers 73 and two T-shaped plates 74. The two U-shaped frames 71 are respectively fixed at the bottoms directly opposite to the bottoms of the four semi-circular shells 67. The two shaft plates 72 are respectively hinged to the bottoms of the inner walls of the two U-shaped frames 71. The two rubber rollers 73 are rotatably installed at the bottoms of the inner walls of the two shaft plates 72. The two T-shaped plates 74 are fixed to the left and right sides of the inner wall of the grain storage shell 511. The top surfaces of the two T-shaped plates 74 are respectively located on the movement trajectories of the outer walls of the two rubber rollers 73. During the up and down reciprocating movement of the rubber rollers 73, the rubber rollers 73 will strike the T-shaped plates 74. During the process of being struck, the T-shaped plates 74 generate amplitudes. The T-shaped plates 74 transmit vibrations to the grain storage shell 511, and the grain storage shell 511 vibrates the corn debris on the wall surface, avoiding that during the process of screening corn kernels by the multi-layer screening mechanism, a large amount of dust adheres to the wall surface of the grain storage shell 511, resulting in poor slag discharge effect of the equipment.

[0027] The vibration device 7 further includes two double-arc plates 75, two arc-shaped elastic pieces 76 and two square plates 77. The two double-arc plates 75 are respectively fixed at the tops of the two U-shaped frames 71 on the sides close to each other. The two arc-shaped elastic pieces 76 are respectively fixed in the middle of the sides of the two double-arc plates 75 close to each other. The two square plates 77 are fixed to the sides of the two shaft plates 72 close to each other. One side of the two square plates 77 close to each other is fixedly connected to one end of the two arc-shaped elastic pieces 76 away from the two double-arc plates 75. The two arc-shaped elastic pieces 76 are respectively located in the middle directly opposite to the four semi-circular shells 67. Under the elastic force of the arc-shaped elastic pieces 76, the shaft plates 72 reset in the U-shaped frames 71, enabling the rubber rollers 73 to stably strike the T-shaped plates 74, avoiding that during the process of screening corn kernels by the multi-layer screening mechanism, the rubber rollers 73 are not easily reset, resulting in poor knocking effect.

[0028] While the cross plate 513 drives the cylinder 521 to move up and down reciprocally, the cylinder 521 drives the cross ring plate 61 to move up and down reciprocally, and the cross ring plate 61 drives the double rollers 62 to move up and down reciprocally. Under the action of friction, the double rollers 62 roll reciprocally on the wall surface of the grain storage shell 511. The double rollers 62 drive the long rod 63 to rotate reciprocally, and the long rod 63 drives the fan blades 64 to rotate reciprocally. During the process of the fan blades 64 rotating reciprocally, the fan blades 64 fan the corn debris accumulated at the lower edge of the grain storage shell 511 towards the middle, preventing the corn debris from accumulating at the lower edge of the grain storage shell 511 during the use of the equipment, thereby avoiding the problem that the corn debris accumulated at the lower edge of the grain storage shell 511 is difficult to clean during the process of screening corn kernels by the multi-layer screening mechanism.

[0029] While the cylindrical barrel 521 drives the horizontal ring plate 61 to reciprocate up and down, the horizontal ring plate 61 drives the U-shaped rod 65 to reciprocate up and down, the U-shaped rod 65 drives the connecting plate 66 to reciprocate up and down, and the connecting plate 66 drives the semi-circular shell 67 to reciprocate up and down. During the reciprocating up and down movement of the semi-circular shell 67, the semi-circular shell 67 blocks the corn debris from falling onto the double rollers 62, preventing a large amount of corn debris from adhering to the double rollers 62 during the use of the equipment. Thus, the problem that the rolling effect of the double rollers 62 is poor due to a large amount of corn debris adhering to the double rollers 62 during the screening of corn kernels by the multi-layer screening mechanism is avoided.

[0030] While the connecting plate 66 drives the semi-circular shell 67 to reciprocate up and down, the semi-circular shell 67 drives the U-shaped frame 71 to reciprocate up and down, the U-shaped frame 71 drives the shaft plate 72 to reciprocate up and down, and the shaft plate 72 drives the rubber roller 73 to reciprocate up and down. During the reciprocating up and down movement of the rubber roller 73, the rubber roller 73 will strike the T-shaped plate 74. Under the action of the extrusion force, the shaft plate 72 rotates in the U-shaped frame 71, and the rubber roller 73 rolls on the T-shaped plate 74, causing the T-shaped plate 74 to generate an amplitude during the striking process. The T-shaped plate 74 transmits the vibration to the grain storage shell 511, and the grain storage shell 511 vibrates the corn debris on the wall surface, preventing a large amount of dust from adhering to the wall surface of the grain storage shell 511 during the use of the equipment. Thus, the problem that the slag discharging effect of the equipment is poor due to a large amount of dust adhering to the wall surface of the grain storage shell 511 during the screening of corn kernels by the multi-layer screening mechanism is avoided.

[0031] While the semi-circular shell 67 drives the U-shaped frame 71 to reciprocate up and down, the U-shaped frame 71 drives the double-arc plate 75 to reciprocate up and down, the double-arc plate 75 drives the arc-shaped elastic piece 76 to reciprocate up and down, and the arc-shaped elastic piece 76 drives the square plate 77 to reciprocate up and down. When the shaft plate 72 rotates in the U-shaped frame 71, the arc-shaped elastic piece 76 deforms. When the rubber roller 73 leaves the T-shaped plate 74, under the elastic force of the arc-shaped elastic piece 76, the shaft plate 72 resets in the U-shaped frame 71, enabling the rubber roller 73 to stably strike the T-shaped plate 74, preventing the rubber roller 73 from being difficult to reset during the use of the equipment. Thus, the problem that the striking effect is poor due to the rubber roller 73 being difficult to reset during the screening of corn kernels by the multi-layer screening mechanism is avoided.

[0032] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A multi-layer screening detection device for a corn thresher based on an image sensor, comprising a base frame (1), a housing (2) being fixedly mounted on the top surface of the base frame (1), characterized in that: The top surface of the casing (2) is provided with a feed inlet, the bottom of the front surface of the casing (2) is provided with an ear outlet, the casing (2) is arranged to be inclined forward on the top surface of the base frame (1), a driving module (3) is fixedly installed on the right side of the casing (2), stirring rods (4) are penetrated and rotatably installed on the left and right sides of the inner wall of the casing (2), the right side of the stirring rod (4) is fixedly connected to the left end of the motor shaft of the driving module (3), a grid hole frame (5) is penetrated and fixed at the bottom end of the interior of the casing (2), and a screening assembly (51) is arranged at the bottom end of the interior of the base frame (1); A detection frame (8) is fixedly connected to the surface of the base frame (1), an image sensor is installed on the inner wall of the detection frame (8), and a classification pushing mechanism is installed on the inner wall of the detection frame (8); The classification pushing mechanism is composed of two cylinders and two push plates, and the cylinders are electrically connected to the image sensor; The outer walls of the two cylinders (521) are provided with fan edge devices (6), and a vibration device (7) is provided directly opposite the fan edge devices (6).

2. A multi-layer screening detection device for a corn thresher based on an image sensor according to claim 1, characterized in that: The screening assembly (51) comprises a grain storage shell (511), the grain storage shell (511) being fixedly mounted on the bottom end of the interior of the base frame (1), a slag outlet being provided at the bottom of the front face of the grain storage shell (511), a large grain outlet being provided at the top right of the grain storage shell (511), and a small grain outlet being provided at the bottom left of the grain storage shell (511), a servo electric cylinder (512) being fixedly mounted on the bottom end of the interior of the grain storage shell (511), and a transverse plate (512) being fixedly mounted on the top surface of the telescopic end of the servo electric cylinder (512). 13), a circular frame 1 (514) is fixed on the top surface of the horizontal plate (513), round rods (515) are fixed on the four sides of the top surface of the circular frame 1 (514), a circular frame 2 (516) is fixed on the top of the four round rods (515), a filter screen (517) is fixed on the top of the inner wall of the circular frame 1 (514), another filter screen (517) is fixed on the top of the inner wall of the circular frame 2 (516), and guide components (52) are arranged on both sides of the bottom surface of the horizontal plate (513); The guide assembly (52) comprises two cylinders (521), the two cylinders (521) are fixed on both sides of the bottom surface of the horizontal plate (513), two springs (522) are respectively fixed to the top ends of the two cylinders (521), two T-shaped columns (523) are respectively fixed to the ends of the two springs (522) away from the two cylinders (521), the outer walls of the two T-shaped columns (523) are slidably connected to the inner walls of the two cylinders (521), and the bottom surfaces of the two T-shaped columns (523) are fixedly connected to the inner bottom end of the grain storage shell (511); The feed port of the casing (2) is located at the back of the driving module (3); the outer wall of the stirring rod (4) is provided with a plurality of arc-shaped plates, and the plurality of arc-shaped plates of the stirring rod (4) are located in the middle of the casing (2); the outer wall of the circular frame 1 (514) is in sliding contact with the inner wall of the grain storage shell (511); the outer wall of the circular frame 2 (516) is in sliding contact with the inner wall of the grain storage shell (511); the mesh gap of the upper filter screen (517) is larger than the mesh gap of the lower filter screen (517); and the two cylinders (521) are located on the left and right sides of the servo electric cylinder (512).

3. A multi-layer screening detection device for a corn thresher based on an image sensor according to claim 2, characterized in that: The fan edge device (6) comprises two transverse ring plates (61), two double rollers (62), four long rods (63) and a plurality of fan blades (64), the two transverse ring plates (61) are respectively fixed to the top of the outer wall of the two cylinders (521), the two double rollers (62) respectively penetrate and are rotatably mounted on the outer walls of the two transverse ring plates (61), the outer walls of the two double rollers (62) are in rolling contact with the left and right sides of the inner wall of the grain storage shell (511), the four long rods (63) are respectively fixed in pairs to the front and back sides of the rotating shafts of the two double rollers (62), and the plurality of fan blades (64) are respectively fixed to the outer walls of the four long rods (63).

4. A multi-layer screening detection device for a corn thresher based on an image sensor according to claim 3, characterized in that: The fan edge device (6) further comprises two U-shaped rods (65), four connecting plates (66) and four semi-arc shells (67), wherein the two U-shaped rods (65) respectively penetrate and are fixed on the outer walls of the two transverse ring plates (61), the four connecting plates (66) are respectively fixed on two ends of the two U-shaped rods (65) away from each other, and the four semi-arc shells (67) are respectively fixed on one side of the four connecting plates (66) away from the two U-shaped rods (65).

5. A multi-layer screening detection device for a corn thresher based on an image sensor according to claim 4, characterized in that: The two double rollers (62) are located on one side of the two transverse ring plates (61) away from each other, and the four semi-arc shells (67) are respectively covered on the outer walls of the two double rollers (62).

6. A multi-layer screening detection device for a corn thresher based on an image sensor according to claim 5, characterized in that: The vibration device (7) comprises two U-shaped frames (71), two shaft plates (72), two rubber rollers (73) and two T-shaped plates (74); the two U-shaped frames (71) are respectively fixed to the bottoms of the four semi-arc shells (67) facing each other; the two shaft plates (72) are respectively hinged to the bottoms of the inner walls of the two U-shaped frames (71); the two rubber rollers (73) are rotatably mounted on the bottoms of the inner walls of the two shaft plates (72); and the two T-shaped plates (74) are fixed to the left and right sides of the inner wall of the grain storage shell (511).

7. A multi-layer screening detection device for a corn thresher based on an image sensor according to claim 6, characterized in that: The vibration device (7) further comprises two double-arc plates (75), two arc-shaped spring pieces (76) and two square plates (77); the two double-arc plates (75) are respectively fixed to the top of the sides of the two U-shaped frames (71) close to each other; the two arc-shaped spring pieces (76) are respectively fixed to the middle of the sides of the two double-arc plates (75) close to each other; the two square plates (77) are fixed to the sides of the two shaft plates (72) close to each other; and the sides of the two square plates (77) close to each other are fixedly connected to one end of the two arc-shaped spring pieces (76) away from the two double-arc plates (75).

8. The multi-layer screening detection device for a corn thresher based on an image sensor according to claim 7, characterized in that: The top surfaces of the two T-shaped plates (74) are respectively located on the movement tracks of the outer walls of the two rubber rollers (73), and the two arc-shaped spring sheets (76) are respectively located in the middle of the four semi-arc shells (67) facing each other.

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