A self-leveling variant pit screen corn kernel cleaning device with serration teeth

Abstract

The invention relates to a corn kernel cleaning device of a self-leveling variant pit screen with a raking tooth, which belongs to agricultural machinery and is composed of a raking and turning device, a variant pit screen, a hydraulic leveling device, a frame, etc. The raking and turning device uses the raking teeth to raking up the debris at the material accumulation on the screen in a clockwise direction, so that the debris is separated from the corn kernels; the variant pits arranged at equal intervals on the variant pit screen can retain the corn kernels in the pits, so that the corn kernels can be screened in multiple dimensions; the windward side of the variant pits helps the air flow to pass through the screen holes, pushing the debris on the screen backward and upward, which helps to separate the corn kernels and debris on the screen; the hydraulic leveling device uses a gyroscope sensor to quickly sense the deflection angle of the variant pit screen relative to the horizontal plane, and adjusts the lifting and lowering of four hydraulic rods through a PLC control panel to keep the variant pit screen parallel to the horizontal plane, which can solve the problem of poor cleaning effect and serious grain loss due to the non-parallelism of the screen surface and the horizontal plane when harvesting corn on a slope.

Description

Technical Field

[0001] The invention relates to agricultural machinery, in particular to a corn grain cleaning device with a self-leveling variant pit screen and serration teeth. Background Art

[0002] At present, the screen body of corn kernel cleaning device mostly adopts flat round hole screen. When a large amount of corn extract is fed in, the material on the screen cannot move backward quickly, resulting in accumulation in front of the screen, which in turn leads to low screening efficiency and serious loss of corn kernels. When the corn combine harvester harvests corn on a slope, the uneven ground causes the screen body to be not parallel to the horizontal plane, causing the material on the screen to accumulate on one side of the screen surface, ultimately resulting in poor cleaning effect and serious loss of corn kernels. Summary of the Invention

[0003] In response to the above technical problems, the present invention has developed a self-leveling, variable-type pit screen corn kernel cleaning device with serration teeth. This device can accelerate the stratification of the material on the screen when the corn shavings are fed in large quantities, reduce the accumulation of corn shavings on the screen surface, improve the efficiency of corn kernel screening, reduce corn kernel loss, and meet the requirements for corn kernel cleaning under large feed rates. When the corn combine harvester is operating on a slope, the screen body is kept parallel to the horizontal plane to prevent the material on the screen from accumulating to one side of the screen surface, thereby reducing losses caused by operating on a slope. (It is specially noted that the "waste" mentioned in this specification is a general term for corn stalks and corn cobs.)

[0004] The object of the present invention is achieved by providing a self-leveling variant pit screen corn kernel cleaning device with teeth, which is characterized by:

[0005] 1. A corn kernel cleaning device with a self-leveling variant pit screen with teeth comprises a turning device, a variant pit screen (34), a hydraulic leveling device, an electric control box (8), a frame (2), etc. A high-speed camera (1) is installed above the frame (2) for observing the accumulation of materials on the screen; a fan (5) is installed at the bottom of the frame (2), and pulleys a (6) are installed at both ends of the fan (5) for power transmission, and the pulleys a (6) are driven by a belt (10) to move the fan. The driven pulley b (13) rotates; the bearing installed on the outer shell of the frame (2) is clearance-matched with the middle part of the transmission shaft (12); the outer side of the frame (2) is installed with a pulley b (13), and the inner side is installed with a crank (14); the pulley b (13) and the crank (14) are respectively matched with the two ends of the transmission shaft (12) through flat keys, and the crank (14) and the side plate (17) of the variant pit screen (34) are respectively connected to the two ends of the connecting rod (15) through a small ball hinge (16).

[0006] 2. The variant pit screen (34) is installed inside the frame (2), and a slide rail (33) is installed outside the two side plates (17) of the variant pit screen (34). Each slide rail (33) is supported by the connecting seat (21) at both ends of each side plate (17); each slide rail (33) is installed with a stepping motor a (3), a screw (25) and a support (24), each screw (25) is installed with a slide (26), and each slide (26) is installed with an electric push rod (32); the upper ends of the two electric push rods (32) are respectively installed with a stepping motor b (30) and a bearing seat (28); the turning device is composed of a tooth (27), a disc seat (29), and a rotating shaft (53), the tooth (27) is installed on the disc seat (29) at equal intervals, and the disc seat (29) and the rotating shaft (53) are concentrically matched and arranged at equal intervals. The rotating shaft (53) of the folding device is coaxially matched with the bearing in the bearing seat (28), and the stepping motor b (30) drives the rotating shaft (53) to rotate through the gear (52), thereby finally realizing the rotation of the folding device; the two stepping motors a (3) drive the slide (26) to slide on the screw (25), thereby causing the stepping motor b (30), the electric push rod (32) and the folding device to slide simultaneously with the slide (26), thereby realizing the adjustment of the position of the folding device in a direction parallel to the screen surface; the lifting and lowering of the electric push rod (32) can realize the adjustment of the position of the folding device in a direction perpendicular to the screen surface; the stepping motor b (30) drives the folding device to rotate clockwise through the gear (52), and uses the folding teeth (27) to fold the debris accumulated on the screen in the clockwise direction, thereby separating the corn kernels (39) from the debris.

[0007] 3. The gyroscope sensor device (36) is installed in front of the variant pit screen (34). The lower ends of the connecting seats (21) at both ends of the two side plates (17) of the variant pit screen (34) are respectively connected to the upper ends of the hydraulic rod a (9), hydraulic rod b (11), hydraulic rod c (23), and hydraulic rod d (19) through large ball hinges (20). The lower ends of the hydraulic rod a (9), hydraulic rod b (11), hydraulic rod c (23), and hydraulic rod d (19) are respectively connected to the corresponding bases (18) at the bottom of the frame (2) through large ball hinges (20); the variant pit screen (34) is evenly spaced along the horizontal and vertical directions. The gyroscope sensor device The device (36) is installed in front of the variant pit screen (34). The gyroscope sensor device (36) can sense whether the variant pit screen (34) is parallel to the horizontal plane. When the variant pit screen (34) deflects relative to the horizontal plane, the gyroscope sensor device (36) quickly senses the angle of deflection of the variant pit screen (34) relative to the horizontal plane, and immediately transmits the deflection angle information to the PLC control board (43) wirelessly. After processing the information, the PLC control board (43) adjusts the lifting and lowering of the hydraulic rod a (9), the hydraulic rod b (11), the hydraulic rod c (23), and the hydraulic rod d (19) to keep the variant pit screen (34) parallel to the horizontal plane.

[0008] 4. An electric control box (8) is installed at the bottom of the frame (2). The electric control box (8) consists of a PLC control board (43), a power supply (41), a relay a (49), a relay b (46), a relay c (44), a relay d (40), and a relay e (51). Circuits a (57), b (58), c (59), d (60), and e (7) are drawn from the power supply (41) to connect to hydraulic rod a (9), hydraulic rod b (11), hydraulic rod c (23), hydraulic rod d (19), and stepper motor a (3) for power supply. Relays a (49), b (46), c (44), d (40), and e (51) are installed on circuits a (57), b (58), c (59), d (60), and e (7) respectively. The PLC control board (43) 3) Control lines a (48), b (47), c (45), d (42), and e (50) are drawn out and connected to the centers of relays a (49), b (46), c (44), d (40), and e (51), respectively. The PLC control board (43) controls the power on and off of each circuit and switches the current direction. The power on and off of circuits a (57), b (58), c (59), d (60), and e (7) and the switching of the current direction can respectively realize the start, pause, and lifting of hydraulic rods a (9), b (11), c (23), and d (19). The power on and off of circuit e (7) and the switching of the current direction can realize the start, pause, and forward and reverse rotation of stepper motor a (3). Thus, a self-leveling variant pit screen corn kernel cleaning device with teeth is formed.

[0009] During the cleaning process, the turning device is always in a parallel state with the variant pit screen (34). The turning device is adjusted to a suitable height perpendicular to the screen surface by using the electric push rod (32), ensuring that the teeth (27) are close to the screen surface but not in contact with the screen surface. The high-speed camera (1) identifies the accumulation position of the material on the screen and transmits the information to the PLC control board (43) for processing. The PLC control board (43) controls the relay e (51) through the control line e (50) to operate the stepper motor a (3), thereby causing the turning device to slide along the slide (26) in a direction parallel to the screen surface to the accumulation position of the material on the screen. The stepper motor a (3) stops working, and the stepper motor b (30) drives the turning device clockwise through the gear (52), and uses the teeth (27) to remove the corn stalks (38) at the accumulation position of the material on the screen. The corn cob (37) is further lifted up in a clockwise direction to separate the corn kernels (39) from the debris, reduce the entrainment of the corn kernels (39) by the corn stalks (38) and the corn cob (37), and help the airflow to blow the debris out of the cleaning device; the variant pit screen (34) is evenly spaced and the variant pits (54) can make the corn kernels (39) stagnate in the pits, so that the corn kernels can achieve multi-dimensional screening, and the windward surface (55) of the variant pit (54) helps the airflow to pass through the sieve holes, push the debris on the screen backward and upward, and help the corn kernels (39) on the screen to be separated from the debris; the crank (14) connecting rod (15) mechanism can be driven by the belt transmission to drive the variant pit screen (34) to do reciprocating motion, screen the material on the screen, make the corn kernels (39) pass through the screen, and discharge the debris out of the machine through the debris discharge port (22).

[0010] When a corn combine harvester is harvesting corn kernels on a slope, a gyroscope sensor device (36) can sense whether the variant pit screen (34) is parallel to a horizontal plane. When the variant pit screen (34) deflects relative to the horizontal plane, the gyroscope sensor device (36) quickly senses the angle of deflection of the variant pit screen (34) relative to the horizontal plane, and immediately transmits the deflection angle information to a PLC control panel (43) wirelessly. The PLC control panel (43) processes the information and adjusts the lifting and lowering of hydraulic rods a (9), hydraulic rods b (11), hydraulic rods c (23), and hydraulic rods d (19) to keep the variant pit screen (34) parallel to the horizontal plane. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The present invention is a schematic diagram of the structure of a corn kernel cleaning device with a self-leveling variant pit screen having teeth;

[0012] Figure 2 This is an axonometric view of a self-leveling variant pit screen corn kernel cleaning device with serrations;

[0013] Figure 3It is a schematic diagram of the circuit inside the electric control box;

[0014] Figure 4 This is a schematic diagram of the working effect of the variant pit screen;

[0015] Figure 5 It is a structural diagram of the variant pit and a front view and an outer contour curve diagram of the front view;

[0016] Figure 6 This is a schematic diagram of the working system structure of a self-leveling variant pit screen corn kernel cleaning device with serration teeth;

[0017] Figure 7 This is a schematic diagram of the working system structure of the hugging and turning device;

[0018] Figure 8 It is a structural diagram of the cleaning device when it is in an uphill state;

[0019] Figure 9 It is a schematic diagram of the structure of the cleaning device when it is in a downhill state;

[0020] Figure 10 This is a structural diagram of the cleaning device when it is in the state of left low and right high;

[0021] Figure 11 This is a structural diagram of the cleaning device when it is in the left-high and right-low state;

[0022] Figure 12 yes Figure 10 A partial enlarged view of middle A.

[0023] Description of part numbers in the figure:

[0024] 1. High-speed camera, 2. Rack, 3. Stepper motor a, 4. Air outlet, 5. Fan, 6. Pulley a, 7. Circuit e, 8. Electric control box, 9. Hydraulic rod a, 10. Belt, 11. Hydraulic rod b, 12. Drive shaft, 13. Pulley b, 14. Crank, 15. Connecting rod, 16. Small ball hinge, 17. Side plate, 18. Base, 19. Hydraulic rod d, 20. Large ball hinge, 21. Connecting seat, 22. Debris discharge port, 23. Hydraulic rod c, 24. Support, 25. Screw, 26. Slide, 27. Gear, 28. Bearing seat, 29. Disc seat, 30. Stepper motor b, 31. Support plate, 32. Electric push rod, 33. Slide rail, 3 4. Variant dimple screen, 35. Tail screen, 36. Gyroscopic sensor, 37. Corn cob, 38. Corn stalk, 39. Corn kernel, 40. Relay d, 41. Power supply, 42. Control line d, 43. PLC control board, 44. Relay c, 45. Control line c, 46. Relay b, 47. Control line b, 48. Control line a, 49. Relay a, 50. Control line e, 51. Relay e, 52. Gear, 53. Rotating shaft, 54. Variant dimple, 55. Windward side, 56. Leeward side, 57. Circuit a, 58 Circuit b, 59. Circuit c, 60. Circuit d, 61. Outer contour curve of the front view of the variant dimple. DETAILED DESCRIPTION

[0025] The following describes an embodiment of the present invention in detail with reference to the accompanying drawings. A self-leveling variant pit screen corn kernel cleaning device with serrations is characterized by:

[0026] 1. A corn kernel cleaning device with a self-leveling variant pit screen with teeth comprises a turning device, a variant pit screen (34), a hydraulic leveling device, an electric control box (8), a frame (2), etc. A high-speed camera (1) is installed above the frame (2) for observing the accumulation of materials on the screen; a fan (5) is installed at the bottom of the frame (2), and pulleys a (6) are installed at both ends of the fan (5) for power transmission, and the pulleys a (6) are driven by a belt (10) to move the fan. The driven pulley b (13) rotates; the bearing installed on the outer shell of the frame (2) is clearance-matched with the middle part of the transmission shaft (12); the outer side of the frame (2) is installed with a pulley b (13), and the inner side is installed with a crank (14); the pulley b (13) and the crank (14) are respectively matched with the two ends of the transmission shaft (12) through flat keys, and the crank (14) and the side plate (17) of the variant pit screen (34) are respectively connected to the two ends of the connecting rod (15) through a small ball hinge (16).

[0027] 2. The variant pit screen (34) is installed inside the frame (2), and a slide rail (33) is installed outside the two side plates (17) of the variant pit screen (34). Each slide rail (33) is supported by the connecting seat (21) at both ends of each side plate (17); each slide rail (33) is installed with a stepping motor a (3), a screw (25) and a support (24), each screw (25) is installed with a slide (26), and each slide (26) is installed with an electric push rod (32); the upper ends of the two electric push rods (32) are respectively installed with a stepping motor b (30) and a bearing seat (28); the turning device is composed of a tooth (27), a disc seat (29), and a rotating shaft (53), the tooth (27) is installed on the disc seat (29) at equal intervals, and the disc seat (29) and the rotating shaft (53) are concentrically matched and arranged at equal intervals. The rotating shaft (53) of the folding device is coaxially matched with the bearing in the bearing seat (28), and the stepping motor b (30) drives the rotating shaft (53) to rotate through the gear (52), thereby finally realizing the rotation of the folding device; the two stepping motors a (3) drive the slide (26) to slide on the screw (25), thereby causing the stepping motor b (30), the electric push rod (32) and the folding device to slide simultaneously with the slide (26), thereby realizing the adjustment of the position of the folding device in a direction parallel to the screen surface; the lifting and lowering of the electric push rod (32) can realize the adjustment of the position of the folding device in a direction perpendicular to the screen surface; the stepping motor b (30) drives the folding device to rotate clockwise through the gear (52), and uses the folding teeth (27) to fold the debris accumulated on the screen in the clockwise direction, thereby separating the corn kernels (39) from the debris.

[0028] 3. The gyroscope sensor device (36) is installed in front of the variant pit screen (34). The lower ends of the connecting seats (21) at both ends of the two side plates (17) of the variant pit screen (34) are respectively connected to the upper ends of the hydraulic rod a (9), hydraulic rod b (11), hydraulic rod c (23), and hydraulic rod d (19) through large ball hinges (20). The lower ends of the hydraulic rod a (9), hydraulic rod b (11), hydraulic rod c (23), and hydraulic rod d (19) are respectively connected to the corresponding bases (18) at the bottom of the frame (2) through large ball hinges (20); the variant pit screen (34) is evenly spaced along the horizontal and vertical directions. The gyroscope sensor device The device (36) is installed in front of the variant pit screen (34). The gyroscope sensor device (36) can sense whether the variant pit screen (34) is parallel to the horizontal plane. When the variant pit screen (34) deflects relative to the horizontal plane, the gyroscope sensor device (36) quickly senses the angle of deflection of the variant pit screen (34) relative to the horizontal plane, and immediately transmits the deflection angle information to the PLC control board (43) wirelessly. After processing the information, the PLC control board (43) adjusts the lifting and lowering of the hydraulic rod a (9), the hydraulic rod b (11), the hydraulic rod c (23), and the hydraulic rod d (19) to keep the variant pit screen (34) parallel to the horizontal plane.

[0029] 4. An electric control box (8) is installed at the bottom of the frame (2). The electric control box (8) consists of a PLC control board (43), a power supply (41), a relay a (49), a relay b (46), a relay c (44), a relay d (40), and a relay e (51). Circuits a (57), b (58), c (59), d (60), and e (7) are drawn from the power supply (41) to connect to hydraulic rod a (9), hydraulic rod b (11), hydraulic rod c (23), hydraulic rod d (19), and stepper motor a (3) for power supply. Relays a (49), b (46), c (44), d (40), and e (51) are installed on circuits a (57), b (58), c (59), d (60), and e (7) respectively. The PLC control board (43) 3) Control lines a (48), b (47), c (45), d (42), and e (50) are drawn out and connected to the centers of relays a (49), b (46), c (44), d (40), and e (51), respectively. The PLC control board (43) controls the power on and off of each circuit and switches the current direction. The power on and off of circuits a (57), b (58), c (59), d (60), and e (7) and the switching of the current direction can respectively realize the start, pause, and lifting of hydraulic rods a (9), b (11), c (23), and d (19). The power on and off of circuit e (7) and the switching of the current direction can realize the start, pause, and forward and reverse rotation of stepper motor a (3). Thus, a self-leveling variant pit screen corn kernel cleaning device with teeth is formed.

[0030] Here’s how it works:

[0031] 1. During the cleaning process, the turning device is always in a parallel state with the variant pit screen (34). The turning device is adjusted to a suitable height perpendicular to the screen surface by using the electric push rod (32) to ensure that the turning teeth (27) are close to the screen surface but do not touch the screen surface. The high-speed camera (1) identifies the accumulation position of the material on the screen and transmits the information to the PLC control board (43) for processing. The PLC control board (43) controls the relay e (51) through the control line e (50) to make the stepper motor a (3) work, thereby making The raking and turning device slides along the slide (26) in a direction parallel to the screen surface to the accumulation position of the material on the screen, the stepper motor a (3) stops working, and the stepper motor b (30) drives the raking and turning device to rotate clockwise through the gear (52), and uses the raking teeth (27) to raking up the corn stalks (38) and corn cobs (37) at the accumulation position of the material on the screen in the clockwise direction, so that the debris is separated from the corn kernels (39), reducing the entrainment of the corn stalks (38) and corn cobs (37) on the corn kernels (39), and helping the air flow to blow the debris out of the cleaning device.

[0032] 2. The variant pit screen (34) is arranged at equal intervals. The variant pits (54) can hold the corn kernels (39) in the pits, so that the corn kernels (39) can be screened in multiple dimensions. The windward surface (55) of the variant pit (54) helps the air flow to pass through the sieve holes, pushing the debris on the sieve backward and upward, which helps to separate the corn kernels (39) and the debris on the sieve. The pulley a (6) drives the pulley b (13) to rotate through the belt (10), thereby driving the crank (14) and connecting rod (15) mechanism to drive the variant pit screen (34) to reciprocate, screening the material on the sieve, allowing the corn kernels (39) to pass through the sieve and discharging the debris out of the machine through the debris discharge port (22).

[0033] 3. When the corn combine harvester is harvesting corn kernels on a slope, the gyroscope sensor device (36) can sense whether the variant pit screen (34) is parallel to the horizontal plane. When the variant pit screen (34) deflects relative to the horizontal plane, the gyroscope sensor device (36) quickly senses the angle of deflection of the variant pit screen (34) relative to the horizontal plane, and immediately transmits the angle information of the deflection to the PLC control board (43) wirelessly. The PLC control board (43) processes the information and adjusts the lifting and lowering of the hydraulic rod a (9), the hydraulic rod b (11), the hydraulic rod c (23), and the hydraulic rod d (19) to keep the variant pit screen (34) parallel to the horizontal plane. The following describes in detail the specific operation of the hydraulic leveling device when the entire cleaning device is in four states: uphill, downhill, left low and right high, and left high and right low.

[0034] When the entire cleaning device is in an uphill state, the PLC control board (43) controls the relays a (49) and b (46) through the control lines a (48) and b (47) respectively to energize the circuits a (57) and b (58) and switch the current direction to a reverse current, thereby causing the hydraulic rods a (9) and b (11) to descend, thereby achieving the downward movement of the front half of the variant pit screen (34). The PLC control board (43) controls the relays c (44) and d (40) through the control lines c (45) and d (42) respectively to energize the circuits c (59) and d (60) and switch the current direction to a forward current, thereby causing the hydraulic rods c (23) and d (19) to ascend, thereby achieving the upward movement of the rear half of the variant pit screen (34), until the variant pit screen (34) is parallel to the horizontal plane.

[0035] When the entire cleaning device is in a downhill state, the PLC control board (43) controls the relays a (49) and b (46) through the control lines a (48) and b (47) respectively to energize the circuits a (57) and b (58) and switch the current direction to a forward current, thereby causing the hydraulic rods a (9) and b (11) to rise, thereby realizing the upward movement of the front half of the variant pit screen (34). The PLC control board (43) controls the relays c (44) and d (40) through the control lines c (45) and d (42) respectively to energize the circuits c (59) and d (60) and switch the current direction to a reverse current, thereby causing the hydraulic rods c (23) and d (19) to descend, thereby realizing the downward movement of the rear half of the variant pit screen (34), until the variant pit screen (34) is parallel to the horizontal plane.

[0036] When the entire cleaning device is in the state of left low and right high, the PLC control board (43) controls the relays b (46) and c (44) through the control lines b (47) and c (45) respectively to energize the circuits b (58) and c (59) and switch the current direction to forward current, thereby causing the hydraulic rods b (11) and c (23) to rise, thereby realizing the upward movement of the left half of the variant pit screen (34). The PLC control board (43) controls the relays a (49) and d (40) through the control lines a (48) and d (42) respectively to energize the circuits a (57) and d (60) and switch the current direction to reverse current, thereby causing the hydraulic rods a (9) and d (19) to descend, thereby realizing the downward movement of the right half of the variant pit screen (34), until the variant pit screen (34) is parallel to the horizontal plane.

[0037] When the entire cleaning device is in the left-high and right-low state, the PLC control board (43) controls the relays b (46) and c (44) through the control lines b (47) and c (45) respectively to energize the circuits b (58) and c (59) and switch the current direction to a reverse current, thereby causing the hydraulic rods b (11) and c (23) to descend, thereby causing the left half of the variant pit screen (34) to move downward. The PLC control board (43) controls the relays a (49) and d (40) through the control lines a (48) and d (42) respectively to energize the circuits a (57) and d (60) and switch the current direction to a forward current, thereby causing the hydraulic rods a (9) and d (19) to ascend, thereby causing the right half of the variant pit screen (34) to move upward, until the variant pit screen (34) is parallel to the horizontal plane.

[0038] Under the condition of large feeding amount of corn sludge, compared with the conventional corn kernel cleaning device, in this cleaning device, a high-speed camera (1) is used to identify the accumulation position of the material on the screen, and the forward and reverse rotation of the stepping motor a (3) is adjusted by the PLC control board (43), so that the turning device slides along the slide (26) in a direction parallel to the screen surface to the accumulation position of the material on the screen, and the turning device rotates clockwise, and the corn stalks (38) and corn cobs (37) at the accumulation position of the material on the screen are further lifted up in the clockwise direction by the teeth (27), so that the corn kernels (39) are separated from the debris, and the corn stalks (38) and corn cobs (37) are reduced. The entrainment of the corn kernels (39) by the corn stalks (38) and corn cobs (37) helps the air flow to blow the debris out of the cleaning device; variant pit screen (34), etc. The variant pits (54) arranged at intervals can hold corn kernels (39) in the pits, so that the corn kernels (39) can be screened in multiple dimensions. The windward surface (55) of the variant pits (54) helps air flow through the sieve holes, pushing the debris on the sieve backward and upward, helping to separate the corn kernels (39) from the debris on the sieve, and improving the corn kernel screening rate. The hydraulic leveling device uses a gyroscope sensor (36) to quickly sense the deflection angle of the variant pit screen (34), and adjusts the lifting and lowering of four hydraulic rods through a PLC control panel (43) to keep the variant pit screen (34) parallel to the horizontal plane. This can solve the problem of the accumulation of materials on the sieve to one side due to the non-parallelism of the sieve surface and the horizontal plane when harvesting corn on a slope, which ultimately causes poor cleaning effect and serious grain loss.

Claims

1. A self-leveling variant pit screen corn kernel cleaning device with serrations, characterized by: A high-speed camera (1) is installed above the frame (2) for observing the accumulation of materials on the screen; a fan (5) and an electric control box (8) are installed at the bottom of the frame (2), and pulleys a (6) are installed at both ends of the fan (5) for power transmission; the variant pit screen (34) is installed inside the frame (2), and a slide rail (33) is installed outside the two side plates (17) of the variant pit screen (34), and each slide rail (33) is supported by a connecting seat (21) at both ends of each side plate (17); each slide rail (33) is installed on a stepping motor a (3), a screw (25) and a support (24), and each screw (25) A slide (26) is mounted on the upper portion, and an electric push rod (32) is mounted on each slide (26); a stepper motor b (30) and a bearing seat (28) are mounted on the upper ends of the two electric push rods (32); the rotating shaft (53) of the hugging and turning device is concentrically matched with the bearing inside the bearing seat, and the stepper motor b (30) drives the rotating shaft (53) through the gear (52), thereby finally realizing the rotation of the hugging and turning device; the hugging and turning device is composed of a hugging tooth (27), a disc seat (29), and a rotating shaft (53); the hugging tooth (27) is mounted on the disc seat (29) at equal intervals, and the disc seat (29) and the rotating shaft (53) are concentrically matched and at equal intervals. The distance is installed on the rotating shaft (53); two stepper motors a (3) drive the slide (26) to slide on the screw (25), thereby making the stepper motor b (30), the electric push rod (32) and the turning device slide synchronously with the slide (26), so as to adjust the position of the turning device in a direction parallel to the screen surface; the lifting and lowering of the electric push rod (32) can adjust the position of the turning device in a direction perpendicular to the screen surface; the high-speed camera (1) identifies the accumulation position of the material on the screen, and adjusts the forward and reverse rotation of the stepper motor a (3) through the PLC control board (43), thereby making the turning device slide in a direction parallel to the screen surface to the material on the screen. The stepping motor b (30) drives the turning device to rotate clockwise through the gear (52), and uses the teeth (27) to pull up the debris at the material accumulation position on the screen in the clockwise direction, so that the debris is separated from the corn kernels (39); the variant pit screen (34) is arranged with variant pits (54) at equal intervals in the horizontal and vertical directions, the windward surface (55) of the variant pit (54) has both convexity and concavity, and the leeward surface (56) has only convexity; the curvature radius of any point on the windward surface (55) of the variant pit (54) is greater than the curvature radius of the leeward surface (56); the equation of the outer contour curve (61) of the front view of the variant pit is: F (x) =4.062*sin(0.3601x+0.02677)+1.046*sin(4.064x+1.736)+0.2022*sin(9.545x+3.272)。 2. The self-leveling variant pit screen corn kernel cleaning device with serrations according to claim 1 is characterized by: The hydraulic leveling device is composed of a gyro sensor device (36), an electric control box (8), a hydraulic rod a (9), a hydraulic rod b (11), a hydraulic rod c (23), a hydraulic rod d (19), a base (18), a connecting seat (21), a large ball hinge (20) and a variant pit screen (34); the gyro sensor device (36) is installed in front of the variant pit screen (34), the lower ends of the connecting seats (21) at both ends of the two side plates (17) of the variant pit screen (34) are respectively connected to the upper ends of the hydraulic rods a (9), the hydraulic rods b (11), the hydraulic rods c (23) and the hydraulic rods d (19) through the large ball hinge (20), and the hydraulic rods a (9), the hydraulic rods b (11), the hydraulic rods c (23) and the hydraulic rods d (19) are respectively connected to ... The lower ends of the (19) are respectively connected to the corresponding bases (18) at the bottom of the frame (2) through large ball hinges (20); the gyroscope sensor device (36) can sense whether the variant pit screen (34) is parallel to the horizontal plane. When the variant pit screen (34) deflects relative to the horizontal plane, the gyroscope sensor device (36) quickly senses the angle of deflection of the variant pit screen (34) relative to the horizontal plane, and immediately transmits the deflection angle information to the PLC control board (43) wirelessly. After processing the information, the PLC control board (43) adjusts the lifting and lowering of the hydraulic rod a (9), the hydraulic rod b (11), the hydraulic rod c (23), and the hydraulic rod d (19) to keep the variant pit screen (34) parallel to the horizontal plane.

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