Corn planter

Abstract

The invention discloses a corn seeding machine, and belongs to the technical field of corn seeding. The seed metering device mainly comprises a seed metering mechanism, the seed metering mechanism comprises a seed metering shell, a front seed discharging wheel and a rear seed discharging wheel are rotationally arranged in the seed metering shell, the center of the rear seed discharging wheel is fixedly connected with a driving rotating seat, the outer side of the driving rotating seat is fixedly connected with a position covering rotating seat, and the center of the seed metering shell is provided with a driving assembly and a position covering assembly; the driving motor is fixedly connected with the front side wall of the seed metering shell through a fixing frame, an output shaft of the driving motor is fixedly connected with a transmission shaft, and a driving ratchet wheel is arranged on the rear portion of the transmission shaft and corresponds to the driving rotary seat. According to the corn seed sowing device, the front seed discharging wheel and the rear seed discharging wheel are arranged, the front seed discharging wheel and the rear seed discharging wheel rotate relatively, and the gap and the depth of the first half groove and the second half groove can be adjusted so as to adapt to sowing operation of corn seeds of different sizes. The corn seeder is mainly used for corn seeding.

Description

Technical Field

[0001] The invention belongs to the technical field of corn sowing, and in particular relates to a corn sowing machine. Background Art

[0002] A corn planter is an agricultural machine specially used for sowing corn seeds. It is also suitable for sowing other crops such as soybeans. The corn planter has the characteristics of uniform sowing, consistent depth, stable row spacing, good soil covering, seed saving and high work efficiency. With the progress of the times, corn planters will continue to have more functions and promote the process of agricultural modernization.

[0003] A Chinese patent with publication number "CN118844164A" discloses a precision corn seeding device with automatic reseeding, including a seeding mechanism, which includes a front cover and a rear cover. A seed outlet is provided at the bottom of the rear cover, and a seed protection plate is fixed on the inner wall of the front cover. The side edges of the seed protection plate are chamfered to provide a supporting force pointing to the spoon nest for the seeds in the spoon nest, thereby preventing the seeds from being separated from the spoon nest due to centrifugal force, vibration or tilting in the spoon nest and causing missing sowing.

[0004] During the later use, the device still had the following problems: different varieties of corn seeds have different sizes. When using a corn seeder, larger corn seeds may cause missed seeds, and smaller corn seeds may be re-seeded. The corn seeder cannot flexibly replace parts such as the scoop nest to adapt to different varieties of corn seeds, resulting in uneven sowing of the seeder and affecting the sowing effect. Summary of the invention

[0005] The technical problem to be solved by the present invention is: to overcome the shortcomings of the prior art and provide a corn seeder, which, by setting a front row seed wheel and a rear row seed wheel, the front row seed wheel and the rear row seed wheel rotate relative to each other, and the gap and depth between half groove one and half groove two can be adjusted to adapt to the sowing operation of corn seeds of different sizes.

[0006] The corn planter described herein comprises a frame, a walking wheel rotatably connected to the frame, a ditching wedge and a covering plate are fixedly connected to the bottom of the frame, a seed bin is fixedly connected to the top of the frame, and a seed discharging mechanism is fixedly connected to the bottom of the seed bin. The seed discharging mechanism comprises a seed discharging shell, a seed inlet pipe opening is fixedly provided on the top of the seed discharging shell, a seed outlet pipe opening is fixedly provided on the bottom of the seed discharging shell, a sensor is fixedly installed on the side wall of the seed discharging shell, an adjusting frame opening is fixedly provided on the front part of the seed discharging shell, a lower pressure plate is fixedly connected on the rear inner wall of the seed discharging shell, a front seed wheel and a rear seed wheel are rotatably provided inside the seed discharging shell, a driving swivel is fixedly connected to the center of the rear seed wheel, a filling swivel is fixedly connected to the outer side of the driving swivel, a driving assembly and a filling assembly are provided at the center of the seed discharging shell, and the driving assembly comprises a driving motor, which is fixedly connected to the front side wall of the seed discharging shell through a fixed frame, an output shaft of the driving motor is fixedly connected to a transmission shaft, a driving ratchet is provided at the rear of the transmission shaft, and the driving ratchet corresponds to the driving swivel.

[0007] Preferably, a fixed block is fixedly connected to the front side wall of the front row seed wheel, and a plurality of groups of half grooves are fixedly opened on the rear side wall of the front row seed wheel. An adjustment block is fixedly provided on the inner side of the half groove, a limiting ramp is fixedly provided on the inner side of the adjustment block, and an elastic claw is fixedly connected to the inner side of the limiting ramp.

[0008] Preferably, a rotation groove is fixedly provided on the rear side wall of the rear row of seed wheels, and the rotation groove is provided to avoid interference between the rear row of seed wheels and the lower pressure plate. A plurality of groups of half grooves are fixedly provided on the front side wall of the rear row of seed wheels, and an adjusting ring seat is fixedly connected to the inner side of the half grooves. A limiting assembly is provided on the adjusting ring seat, and an axial clamping tube is fixedly provided on the inner side of the adjusting ring seat. A plurality of groups of buckle grooves are fixedly provided on the axial clamping tube, and the buckle grooves cooperate with elastic clamping claws. An axial slot is provided on the buckle slot, and the slot extends backward out of the rear row of seed wheels.

[0009] Preferably, groove one, groove two and groove three are fixedly provided on the adjustment ring seat, the groove depth of groove two is smaller than that of groove one, the groove depth of groove three is larger than that of groove one, groove one, groove two and groove three all correspond to the adjustment block, when the adjustment block is inserted into different grooves, the gap width between the front row seed wheel and the rear row seed wheel can be changed, the side walls at one end of groove one, groove two and groove three are all rounded, and multiple sets of sliding openings are fixedly provided on the adjustment ring seat, and the positions of the sliding openings correspond to the positions of half groove two.

[0010] Preferably, the limit assembly is slidably connected to the slide, a top plate is fixedly connected to the top of the limit assembly, the top plate slides with the inner wall of the second half groove, a contact ball is fixedly provided at the bottom of the limit assembly, a compression spring 1 is fixedly connected to the upper part of the contact ball, the other end of the compression spring 1 is fixedly connected to the adjusting ring seat, the contact ball slides in contact with the limit ramp, a pressure rod is fixedly connected to the rear of the contact ball, the pressure rod extends backward into the rotating groove, the pressure rod cooperates with the lower pressure plate, when the limit assembly rotates to the bottom with the rear row of seed wheels, the pressure rod contacts the lower pressure plate, and the pressure rod is gradually pushed downward by the lower pressure plate, driving the limit assembly to extend to the bottom.

[0011] Preferably, a limit slider is fixedly provided on the outer wall of the transmission shaft, a connecting groove is fixedly opened at the rear of the transmission shaft, a second compression spring is fixedly connected to the inner wall of the connecting groove, the other end of the second compression spring is fixedly connected to the driving ratchet, and the driving ratchet is circumferentially fixed to the connecting groove.

[0012] Preferably, the replacement component includes a replacement push tube, a connecting frame is rotatably connected to the outer wall of the front end of the replacement push tube, and electric push rods are fixedly connected to both sides of the connecting frame. The push rods of the electric push rods are fixedly connected to the front side walls of the seed shell, a limited sliding groove is fixedly provided on the front inner wall of the replacement push tube, the limiting sliding groove is slidably connected to the limiting sliding block, a guide protrusion is fixedly provided on the rear inner wall of the replacement push tube, a convex plate is fixedly connected to the outer wall of the rear end of the replacement push tube, an unlocking pull ring is provided on the convex plate, and a replacement ratchet is rotatably contacted on the inner wall of the replacement push tube, a compression spring three is fixedly connected to the front end of the replacement ratchet, and the other end of the compression spring three is fixedly connected to the transmission shaft, the inner wall of the replacement ratchet is in rotational contact with the transmission shaft, a guide groove is fixedly provided on the outer wall of the replacement ratchet, the guide groove is in sliding contact with the guide protrusion, and the replacement ratchet corresponds to the replacement swivel seat.

[0013] Preferably, a tension spring is fixedly connected to the inner wall of the front end of the unlocking pull ring, and the other end of the tension spring is fixedly connected to the convex plate. A plurality of push rods are fixedly connected to the rear end of the unlocking pull ring. The push rods are slidably connected to the slots, and the push rods cooperate with elastic claws. When the push rods slide forward along the slots, the push rods push the elastic claws out of the buckle slots.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting the front seed wheel and the rear seed wheel, the front seed wheel and the rear seed wheel rotate relative to each other, and the gap and depth between the half groove one and the half groove two can be adjusted to adapt to the sowing operation of corn seeds of different sizes.

[0015] 2. By setting a driving swivel seat and a driving component, the driving component drives the rear seed wheel by engaging with the driving swivel seat, and the filling component cooperates with the filling swivel seat. When the sensor detects that there is a lack of seeds in the half slot, the electric push rod starts, driving the filling component to move backward, the filling component engages with the filling swivel seat, and pushes the rear seed wheel to speed up the rotation speed, which is a certain angle more than the case where only the driving component rotates, so that the corn seeds in the rear half slot can quickly rotate forward one position for filling operation.

[0016] 3. By setting elastic claws, the front and rear seed wheels can be axially locked, and the front and rear seed wheels can be circumferentially locked in conjunction with the adjusting block and the adjusting ring seat to avoid accidental misalignment of the two during the seeding process, resulting in seed jamming and affecting the seeding effect.

[0017] 4. By setting an axial clamping tube, when it cooperates with the elastic clamping claw, the front row seed wheel and the rear row seed wheel after the posture is adjusted can be axially locked. When the axial clamping tube cooperates with the unlocking pull ring, the unlocking pull ring can fill the slot and squeeze the elastic clamping claw outward from the buckle slot to complete the unlocking of the front row seed wheel and the rear row seed wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the front structure of the seed arrangement mechanism; Figure 3 It is a schematic diagram of the rear structure of the seed arrangement mechanism; Figure 4 It is a schematic diagram of the internal structure of the seed arrangement mechanism; Figure 5 It is a schematic diagram of the rear structure of the rear seed wheel; Figure 6 Schematic diagram of the internal structure of the seed shell; Figure 7 It is a schematic diagram of the explosion structure of the front seed wheel and the rear seed wheel; Figure 8 It is a schematic diagram of the explosion mechanism of the front seed wheel, the rear seed wheel and the limit assembly; Fig. 9 Schematic diagram of the rear structure of the front seed wheel Fig.10 It is a schematic diagram of the front structure of the rear seed wheel; Fig.11 for Fig.10 A magnified view of the structure at center A; Fig.12 The figure is a schematic diagram of the cooperation of the rear seed wheel inside the seed shell; Fig.13 It is a structural schematic diagram of the limit assembly; Fig.14 It is a schematic diagram of the structure of the adjusting ring seat on the rear seed wheel; Fig.15 It is a schematic diagram of the matching structure of the unlocking pull ring and buckle groove with the rear seed wheel; Fig.16 Schematic diagram of the internal structure of the front seed wheel and the rear seed wheel; Fig.17 It is a schematic diagram of the matching structure of the push tube for filling the position and the unlocking pull ring; Fig.18 It is a schematic diagram of the structure of the unlocking pull ring; Fig.19 It is a schematic diagram of the overall structure of the driving component and the filling component; Fig. 20 It is a schematic diagram of the exploded structure of the driving component and the replacement component; Fig.21 It is a schematic diagram of the structure of the push tube and the transmission shaft; Fig. 22 It is a schematic diagram of the structure of the complementary ratchet and the transmission shaft; Fig.23 Schematic diagram of the internal structure of the transmission shaft and driving ratchet.

[0019] In the figure, 1, frame; 101, walking wheel; 102, trenching wedge; 103, soil cover; 2, seed bin; 3, seed shell; 301, seed inlet; 302, seed outlet; 303, sensor; 304, adjustment frame; 305, lower pressure plate; 4, front seed wheel; 401, fixing block; 402, half groove one; 403, adjustment block; 404, limit ramp; 405, elastic claw; 5, rear seed wheel; 501, adjustment ring seat; 501A, groove one; 501B, groove two; 501C, groove three; 501D, slide; 502, half groove two; 503, limit assembly; 503A, top plate; 503B, compression spring one; 503C, contact Ball; 503D, pressure rod; 504, rotating groove; 505, axial clamping tube; 505A, buckle groove; 505B, slotting; 506, replacement swivel seat; 507, driving swivel seat; 6, driving assembly; 601, driving motor; 602, transmission shaft; 602A, limiting slider; 602B, connecting groove; 603, driving ratchet; 604, compression spring 2; 7, replacement assembly; 701, replacement push tube; 701A, limiting slide groove; 701B, guide convex block; 701C, convex plate; 702, connecting frame; 703, electric push rod; 704, replacement ratchet; 704A, guide groove; 704B, compression spring 3; 8, unlocking pull ring; 801, push rod; 802, tension spring. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings: The directional nouns involved in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application according to the visual orientation shown in the accompanying drawings. Unless otherwise clearly specified and limited, the terms "setting", "installation", "connection", etc. should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, a corn planter includes a frame 1, a running wheel 101 is rotatably connected to the frame 1, a trenching wedge 102 and a covering plate 103 are fixedly connected to the bottom of the frame 1, a seed bin 2 is fixedly connected to the top of the frame 1, and a seed discharge mechanism is fixedly connected to the bottom of the seed bin 2. The running wheel 101 drives the planter forward, and the trenching wedge 102 performs trenching operations on the land. After the corn seeds are taken from the seed bin 2 by the seed discharge mechanism, the single grains fall into the trenches, and then the covering plate 103 gathers the soil to bury the corn seeds. Figure 4 , Figure 5 and Figure 6 As shown, the seeding mechanism includes a seeding shell 3, a seed inlet pipe 301 is fixedly provided on the top of the seeding shell 3, a seed outlet pipe 302 is fixedly provided on the bottom of the seeding shell 3, and a sensor 303 is fixedly installed on the side wall of the seeding shell 3. Corn seeds enter the half groove from the seed inlet pipe 301 and rotate with the seeding wheel. When moving to the position of the sensor 303, the sensor 303 scans and detects the half groove to determine whether there are corn seeds in the half groove. If there are corn seeds, the reseeding component is started to perform the reseeding operation, and the corn seeds are finally discharged from the seed outlet pipe 302 at the bottom into the soil to complete the sowing operation; an adjustment frame opening 304 is fixedly opened at the front of the seeding shell 3. By setting the adjustment frame opening 304, the user can directly rotate and adjust the front seed wheel 4, so that the front seed wheel 4 rotates relative to the rear seed wheel 5, and the width gap between the two is adjusted.

[0022] A lower pressure plate 305 is fixedly connected to the inner wall of the rear part of the seed shell 3, and a front seed wheel 4 and a rear seed wheel 5 are rotatably arranged inside the seed shell 3. By setting the front seed wheel 4 and the rear seed wheel 5, when the two are locked and rotated synchronously, the corn seeds can be sown. When the two are unlocked and allowed to rotate relative to each other, the adjusting block 403 is inserted into the grooves of different depths, so that the gap between the front seed wheel 4 and the rear seed wheel 5 is expanded or reduced. At the same time, due to the change of the gap between the two, the contact point between the limiting component 503 and the limiting ramp 404 is changed. The larger the gap, the closer the contact point is to the center, and the deeper the depth in the half groove is, which is suitable for sowing corn seeds of larger size. Conversely, by rotating the front seed wheel 4, the front seed wheel 4 and the rear seed wheel 5 rotate relative to each other, and the gap and depth of the half groove 1 402 and the half groove 2 502 can be adjusted to adapt to the sowing operation of corn seeds of different sizes.

[0023] The center of the rear seed-row wheel 5 is fixedly connected with a driving swivel seat 507, and the outer side of the driving swivel seat 507 is fixedly connected with a replacement swivel seat 506. The driving swivel seat 507 cooperates with the driving component 6. The driving component 6 drives the rear seed-row wheel 5 by engaging with the driving swivel seat 507. The replacement component 7 cooperates with the replacement swivel seat 506. When the sensor 303 detects that there is a lack of seeds in the half slot, the electric push rod 703 starts, drives the replacement component to move backward, and the replacement component 7 engages with the replacement swivel seat 506, and pushes the rear seed-row wheel 5 to speed up the rotation speed, and rotates a certain angle more than when only the driving component 6 rotates, so that the corn seeds in the rear half slot can quickly rotate forward one position to carry out the replacement operation. The driving component 6 and the replacement component 7 are provided in the center of the seed-row shell 3, such as Fig.19 As shown, the drive assembly 6 includes a drive motor 601, which is fixedly connected to the front side wall of the seed shell 3 through a fixed frame. The output shaft of the drive motor 601 is fixedly connected to a transmission shaft 602. A drive ratchet 603 is provided at the rear of the transmission shaft 602, and the drive ratchet 603 corresponds to the drive swivel 507.

[0024] like Figure 7 and Fig. 9As shown, a fixing block 401 is fixedly connected to the front side wall of the front seed wheel 4. By setting the fixing block 401, it is convenient for the user to directly grasp the fixing block 401 with his hand and push the front seed wheel 4 to rotate, thereby changing the width gap between the front seed wheel 4 and the rear seed wheel 5. A plurality of groups of half grooves 1 402 are fixedly provided on the rear side wall of the front seed wheel 4. An adjusting block 403 is fixedly provided inside the half groove 1 402. A limiting ramp 404 is fixed inside the adjusting block 403. The closer the limiting ramp 404 is to the side wall of the front seed wheel 4, the larger its diameter and the wider its width. When the limiting component 503 cooperates with this, it is located at a relatively outer side of the half groove. At this time, the depth of the half groove is shallow, which is suitable for accommodating smaller corn varieties. The farther the limiting ramp 404 is from the side wall of the front seed wheel 4, the smaller its diameter and the narrower its width. When the limiting component 503 cooperates with this, it is located at a relatively inner side of the half groove. At this time, the depth of the half groove is deep, which is suitable for accommodating larger corn varieties. An elastic claw 405 is fixedly connected to the inner side of the limiting ramp 404. By setting the elastic claw 405, the front row seed wheel 4 and the rear row seed wheel 5 can be axially locked, and the front row seed wheel 4 and the rear row seed wheel 5 can be circumferentially locked in cooperation with the adjustment block 403 and the adjustment ring seat 501 to avoid accidental misalignment between the two during the seeding process, resulting in seed jamming and affecting the seeding effect.

[0025] like Figure 8 , Fig.10 and Fig.11 As shown, a rotation groove 504 is fixedly provided on the rear side wall of the rear seed wheel 5, and the rotation groove 504 is provided to avoid interference between the rear seed wheel 5 and the lower pressure plate 305. A plurality of groups of half grooves 502 are fixedly provided on the front side wall of the rear seed wheel 5, and the half grooves 502 cooperate with the half grooves 402 to accommodate corn seeds for sowing operations. An adjusting ring seat 501 is fixedly connected to the inner side of the second half groove 502, and the adjusting ring seat 501 cooperates with the adjusting block 403. By changing the contact position of the two, the second half groove 502 and the first half groove 402 can accommodate corn seeds of different sizes; a limiting component 503 is provided on the adjusting ring seat 501, and an axial clamping tube 505 is fixedly provided on the inner side of the adjusting ring seat 501. The axial clamping tube 505 is fixedly provided with multiple groups of buckle grooves 505A, and the buckle grooves 505A cooperate with the elastic claws 405. A slot 505B is axially provided on the buckle groove 505A, and the slot 505B extends backward to form a rear seed wheel 5. By setting an axial clamping tube 505, when it cooperates with the elastic clamping claw 405, the front row seed wheel 4 and the rear row seed wheel 5 after the posture is adjusted can be axially locked. When the axial clamping tube 505 cooperates with the unlocking pull ring 8, the unlocking pull ring 8 can fill the groove 505B, squeeze the elastic clamping claw 405 outward from the buckle groove 505A, and complete the unlocking of the front row seed wheel 4 and the rear row seed wheel 5.

[0026] like Fig.14As shown, the adjusting ring seat 501 is fixedly provided with groove 1 501A, groove 2 501B and groove 3 501C. The groove depth of groove 2 501B is less than that of groove 1 501A, and the groove depth of groove 3 501C is greater than that of groove 1 501A. Groove 1 501A, groove 2 501B and groove 3 501C all correspond to the adjusting block 403. When the adjusting block 403 is inserted into different grooves, the gap width between the front seed wheel 4 and the rear seed wheel 5 can be changed. , the side walls of one end of groove 1 501A, groove 2 501B and groove 3 501C are all rounded, so that when the front seed wheel 4 is rotated, the adjustment block 403 can slide out of the groove through the rounded corner to adjust the position. The other side walls of groove 1 501A, groove 2 501B and groove 3 501C are all right-angled edges, so that the driving torque of the rear seed wheel 5 can be transmitted to the front seed wheel 4 through the adjustment block 403, so that the two can rotate synchronously. Multiple groups of sliding openings 501D are fixedly provided on the adjustment ring seat 501, and the position of the sliding opening 501D corresponds to the position of the half groove 2 502. The bottom of each group of half grooves 2 502 is provided with a sliding opening 501D to realize the installation of the limit assembly 503 on the half groove 2 502.

[0027] like Fig.12 , Fig.13 and Fig.16 As shown, the limit assembly 503 is slidably connected to the sliding opening 501D, a top plate 503A is fixedly connected to the top of the limit assembly 503, and the top plate 503A is slidably matched with the inner wall of the second half groove 502. The position of the top plate 503A inside the second half groove 502 determines the size of the space for accommodating corn seeds; a contact ball 503C is fixedly provided at the bottom of the limit assembly 503, and a compression spring 503B is fixedly connected to the upper part of the contact ball 503C, and the other end of the compression spring 503B is fixedly connected to the adjusting ring seat 50 1 is fixedly connected, the contact ball 503C is in sliding contact with the limiting ramp 404, and a pressure rod 503D is fixedly connected to the rear of the contact ball 503C. The pressure rod 503D extends backward into the rotating groove 504, and the pressure rod 503D cooperates with the lower pressure plate 305. When the limiting assembly 503 rotates to the bottom following the rear seed wheel 5, the pressure rod 503D contacts the lower pressure plate 305, and the pressure rod 503D is gradually squeezed downward by the lower pressure plate 305, driving the limiting assembly 503 to extend to the bottom. Pushed by the elastic force of the compression spring 503B, the contact ball 503C maintains contact with the limiting ramp 404, and the position of the top plate 503A inside the half groove remains fixed, so that the corn seeds can be accommodated and sown. When the limiting component 503 follows the rear seed wheel 5 to move to the bottom, the pressure rod 503D on the limiting component 503 gradually contacts the lower pressure plate 305 and is squeezed by the lower pressure plate 305, so that the limiting component 503 overcomes the thrust of the compression spring 503B and extends outward, and the top plate 503A pushes the corn seeds in the half groove outward to prevent the corn seeds from being stuck in the half groove and affecting the sowing effect.

[0028] like Fig. 22 and Fig.23 As shown, a limit slider 602A is fixedly provided on the outer wall of the transmission shaft 602, a connection groove 602B is fixedly provided at the rear of the transmission shaft 602, a second compression spring 604 is fixedly connected to the inner wall of the connection groove 602B, the other end of the second compression spring 604 is fixedly connected to the driving ratchet 603, and the driving ratchet 603 is circumferentially fixed to the connection groove 602B. The power of the driving motor 601 is transmitted to the driving ratchet 603 through the transmission shaft 602, and driven by the second compression spring 604, the driving ratchet 603 is meshed with the driving rotating seat 507, and drives the rear seed wheel 5 to rotate, sowing corn seeds.

[0029] like Fig. 20 and Fig.21 As shown, the replacement component 7 includes a replacement push tube 701. When it is detected that the corn seeds in the half slot are missing, the electric push rod 703 drives the replacement push tube 701 to move backward for a distance. The replacement push tube 701 slides backward relative to the transmission shaft 602, squeezing the replacement ratchet 704. Since the replacement ratchet 704 is blocked by the replacement rotating seat 506 and cannot continue to slide backward, under the guiding and limiting action of the guide protrusion 701B and the guide groove 704A, the replacement ratchet 704 rotates relative to the transmission shaft 602, pushing the rear seed wheel 5 to rotate again at a certain angle based on the original rotation speed. This rotation angle is just enough to allow the seed wheel to rotate through a half slot, allowing the half slot without corn seeds to quickly leave the seed outlet 302, allowing the subsequent half slot to take over the replacement seeding, thereby avoiding affecting the sowing uniformity of the corn seeds.

[0030] A connecting frame 702 is rotatably connected to the outer wall of the front end of the replacement push tube 701, and electric push rods 703 are fixedly connected to the two sides of the connecting frame 702. The push rods of the electric push rods 703 are fixedly connected to the front side walls of the seeding shell 3. A limited sliding groove 701A is fixedly provided on the front inner wall of the replacement push tube 701. The limited sliding groove 701A is slidably connected to the limited sliding block 602A. Through the cooperation of the limited sliding groove 701A and the limited sliding block 602A, the replacement push tube 701 and The transmission shaft 602 is fixed circumferentially; a guide protrusion 701B is fixedly provided on the inner wall of the rear part of the replacement push tube 701, and a convex plate 701C is fixedly connected to the outer wall of the rear end of the replacement push tube 701, and an unlocking pull ring 8 is provided on the convex plate 701C. When the replacement push tube 701 slides forward driven by the electric push rod 703, the unlocking pull ring 8 can be squeezed forward, and the unlocking pull ring 8 slides on the slot 505B, squeezing the elastic claw 405 out of the buckle slot 505A. A replacement ratchet 704 is rotatably contacted on the inner wall of the replacement push tube 701, and a compression spring 704B is fixedly connected to the front end of the replacement ratchet 704, and the other end of the compression spring 704B is fixedly connected to the transmission shaft 602. By setting the compression spring 704B, the replacement ratchet 704 can maintain contact and engagement with the replacement swivel seat 506; the inner wall of the replacement ratchet 704 is in rotational contact with the transmission shaft 602, and a guide groove 704A is fixedly opened on the outer wall of the replacement ratchet 704, and the guide groove 704A is in sliding contact with the guide protrusion 701B, and the replacement ratchet 704 corresponds to the replacement swivel seat 506.

[0031] like Fig.15 , Fig.17 and Fig.18 As shown, a tension spring 802 is fixedly connected to the inner wall of the front end of the unlocking pull ring 8, and the other end of the tension spring 802 is fixedly connected to the convex plate 701C. A plurality of push rods 801 are fixedly connected to the rear end of the unlocking pull ring 8. The push rods 801 are slidably connected to the slot 505B, and the push rods 801 cooperate with the elastic claw 405. When the push rod 801 slides forward along the slot 505B, the push rod 801 pushes the elastic claw 405 out of the buckle slot 505A.

[0032] How it works to adapt to different sizes of corn varieties: 1. The electric push rod 703 drives the replacement push tube 701 to move forward for a distance, the tension spring 802 is compressed, the unlocking pull ring 8 moves forward, and the push rod 801 thereon slides along the slot 505B, squeezing the elastic claw 405 out of the buckle slot 505A, completing the axial unlocking of the front seed wheel 4 and the rear seed wheel 5, allowing them to rotate relative to each other; 2. The user adjusts the frame opening 304 and pushes the fixed block 401 to rotate the front seed wheel 4, and the rear seed wheel 5 stops rotating under the action of friction. At this time, the front seed wheel 4 rotates relative to the rear seed wheel 5; 3. The adjusting block 403 rotates on the adjusting ring seat 501. When the adjusting block 403 cooperates with different grooves, the width between the front seed wheel 4 and the rear seed wheel 5 changes due to the different groove depths of the grooves. This causes the contact point between the contact ball 503C at the bottom of the limiting assembly 503 and the limiting ramp 404 to change, and the initial position of the top sheet 503A in the half groove to change. 4. When the adjusting block 403 is matched with the second groove 501B, the distance between the front seed wheel 4 and the rear seed wheel 5 is the largest, and the top plate 503A is initially located at the bottom of the second half groove 502. At this time, the width and depth are both the largest, and larger corn seeds can be accommodated; 5. After the adjustment is completed, the electric push rod 703 is controlled to drive the replacement push tube 701 to move backward to the initial middle position, the tension spring 802 pulls the unlocking pull ring 8 to move backward, and the push rod 801 moves to the last position of the slot 505B, disengaging from the buckle slot 505A, allowing the elastic claw 405 to clamp the buckle slot 505A, thereby axially fixing the front seed wheel 4 and the rear seed wheel 5.

[0033] How the missed corn seed replanting operation works: 1. As the front seed wheel 4 and the rear seed wheel 5 rotate, the sensor 303 detects the corn seeds in the half slot 1 402 and the half slot 2 502. When it is determined that there are no corn seeds in the half slot, the electric push rod 703 is controlled to drive the filling push pipe 701 to move backward for a distance; 2. The guide protrusion 701B on the replacement push tube 701 squeezes the guide groove 704A, so that the guide groove 704A meshes with the replacement rotating seat 506 and pushes the replacement rotating seat 506 to rotate at a certain angle, so that the front seed wheel 4 and the rear seed wheel 5 rotate at a faster speed for a distance, so that the half groove with corn seeds at the back moves forward to replace the half groove without seeds, thereby maintaining the continuity of corn sowing.

[0034] The present invention provides a front seed wheel 4 and a rear seed wheel 5, and the front seed wheel 4 and the rear seed wheel 5 rotate relative to each other, so as to adjust the gap and depth of the half groove 1 402 and the half groove 2 502 to adapt to the sowing operation of corn seeds of different sizes. By providing an elastic clamping claw 405, the front seed wheel 4 and the rear seed wheel 5 can be axially locked, and the front seed wheel 4 and the rear seed wheel 5 can be circumferentially locked in cooperation with the adjustment block 403 and the adjustment ring seat 501, so as to avoid accidental dislocation of the two during the seeding process, resulting in the occurrence of seed jamming, and affecting the seeding effect. By setting an axial clamping tube 505, when it cooperates with the elastic clamping claw 405, the front row seed wheel 4 and the rear row seed wheel 5 after the posture is adjusted can be axially locked. When the axial clamping tube 505 cooperates with the unlocking pull ring 8, the unlocking pull ring 8 can fill the groove 505B, squeeze the elastic clamping claw 405 outward from the buckle groove 505A, and complete the unlocking of the front row seed wheel 4 and the rear row seed wheel 5.

Claims

1. A corn planter, comprising a frame, a traveling wheel rotatably connected to the frame, a trenching wedge and a covering plate fixedly connected to the bottom of the frame, a seed bin fixedly connected to the top of the frame, and a seed discharge mechanism fixedly connected to the bottom of the seed bin, characterized in that: The seeding mechanism includes a seeding shell, a seed inlet pipe port is fixedly provided on the top of the seeding shell, a seed outlet pipe port is fixedly provided on the bottom of the seeding shell, a sensor is fixedly installed on the side wall of the seeding shell, an adjustment frame port is fixedly opened at the front of the seeding shell, a lower pressure plate is fixedly connected to the rear inner wall of the seeding shell, a front seeding wheel and a rear seeding wheel are rotatably arranged inside the seeding shell, a driving swivel is fixedly connected to the center of the rear seeding wheel, a filling swivel is fixedly connected to the outer side of the driving swivel, a driving assembly and a filling assembly are arranged in the center of the seeding shell, and the driving assembly includes a driving motor, which is fixedly connected to the front side wall of the seeding shell through a fixing frame, the output shaft of the driving motor is fixedly connected to the transmission shaft, a driving ratchet is arranged at the rear of the transmission shaft, and the driving ratchet corresponds to the driving swivel.

2. A corn planter according to claim 1, characterized in that: A fixing block is fixedly connected to the front side wall of the front row seed wheel, and multiple groups of half grooves are fixedly provided on the rear side wall of the front row seed wheel. An adjusting block is fixedly arranged on the inner side of the half groove, a limiting inclined platform is fixedly arranged on the inner side of the adjusting block, and an elastic claw is fixedly connected to the inner side of the limiting inclined platform.

3. A corn planter according to claim 1, characterized in that: A rotation groove is fixedly provided on the rear side wall of the rear row seed wheel, and the rotation groove is provided to avoid interference between the rear row seed wheel and the lower pressure plate. A plurality of groups of half grooves are fixedly provided on the front side wall of the rear row seed wheel, and an adjusting ring seat is fixedly connected to the inner side of the half groove. A limiting component is provided on the adjusting ring seat, and an axial clamping tube is fixedly provided on the inner side of the adjusting ring seat. A plurality of groups of buckle grooves are fixedly provided on the axial clamping tube, and the buckle grooves cooperate with elastic clamping claws. An axial slot is provided on the buckle slot, and the slot extends backward out of the rear row seed wheel.

4. A corn planter according to claim 3, characterized in that: The adjusting ring seat is fixedly provided with groove one, groove two and groove three, the groove depth of groove two is less than that of groove one, the groove depth of groove three is greater than that of groove one, groove one, groove two and groove three all correspond to the adjusting block, when the adjusting block is inserted into different grooves, the gap width between the front row seed wheel and the rear row seed wheel can be changed, the side walls of one end of groove one, groove two and groove three are all rounded, and the adjusting ring seat is fixedly provided with multiple sets of sliding openings, and the positions of the sliding openings correspond to the positions of the half groove two.

5. A corn planter according to claim 4, characterized in that: The limit assembly is slidably connected to the sliding mouth, and a top plate is fixedly connected to the top of the limit assembly, and the top plate slidably cooperates with the inner wall of the second half groove, and a contact ball is fixedly provided at the bottom of the limit assembly, and a compression spring 1 is fixedly connected to the upper part of the contact ball, and the other end of the compression spring 1 is fixedly connected to the adjusting ring seat. The contact ball slidably contacts with the limit ramp, and a pressure rod is fixedly connected to the rear of the contact ball, and the pressure rod extends backward into the rotating groove, and the pressure rod cooperates with the lower pressure plate. When the limit assembly rotates to the bottom with the rear seed wheel, the pressure rod contacts the lower pressure plate, and the pressure rod is gradually pushed downward by the lower pressure plate, driving the limit assembly to extend to the bottom.

6. A corn planter according to claim 1, characterized in that: A limit slider is fixedly provided on the outer wall of the transmission shaft, a connecting groove is fixedly opened at the rear of the transmission shaft, a second compression spring is fixedly connected to the inner wall of the connecting groove, the other end of the second compression spring is fixedly connected to the driving ratchet, and the driving ratchet is circumferentially fixed to the connecting groove.

7. A corn planter according to claim 1, characterized in that: The replacement component includes a replacement push tube, a connecting frame is rotatably connected to the outer wall of the front end of the replacement push tube, and electric push rods are fixedly connected to both sides of the connecting frame. The push rods of the electric push rods are fixedly connected to the front side walls of the seed shell, a limited sliding groove is fixedly provided on the front inner wall of the replacement push tube, the limiting sliding groove is slidably connected to the limiting sliding block, a guide protrusion is fixedly provided on the rear inner wall of the replacement push tube, a convex plate is fixedly connected to the outer wall of the rear end of the replacement push tube, an unlocking pull ring is provided on the convex plate, a replacement ratchet is rotatably contacted on the inner wall of the replacement push tube, a compression spring three is fixedly connected to the front end of the replacement ratchet, and the other end of the compression spring three is fixedly connected to the transmission shaft, the inner wall of the replacement ratchet is rotatably contacted with the transmission shaft, a guide groove is fixedly provided on the outer wall of the replacement ratchet, the guide groove is slidably contacted with the guide protrusion, and the replacement ratchet corresponds to the replacement swivel seat.

8. A corn planter according to claim 7, characterized in that: A tension spring is fixedly connected to the inner wall of the front end of the unlocking pull ring, and the other end of the tension spring is fixedly connected to the convex plate. A plurality of push rods are fixedly connected to the rear end of the unlocking pull ring. The push rods are slidably connected to the slots, and the push rods cooperate with elastic claws. When the push rods slide forward along the slots, the push rods push the elastic claws out of the buckle slots.

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