阅读说明：本技术 一种宽窄双行起垄预切种式木薯种植机 (Wide-narrow double-row ridging pre-cutting type cassava planting machine ) 是由 何冯光 邓干然 崔振德 郑爽 李国杰 李玲 覃双眉 林晴 于 2020-03-19 设计创作，主要内容包括：本发明公开了一种宽窄双行起垄预切种式木薯种植机,包括机架、地轮、传动系统和转盘式排种器,所述机架顶侧设有转盘式排种器,底侧设有地轮,所述地轮通过传动系统带动转盘式排种器转动。本发明采用预先将木薯种秆切段为长15～20cm种茎的方式,利用转盘式排种器,改变实时切种式木薯种植机排种方式。本发明具有结构简单,工作稳定性好,排种均匀、精准、效率高等特点。(The invention discloses a wide-narrow double-row ridging and seed pre-cutting cassava planter which comprises a rack, land wheels, a transmission system and a rotary disc type seed sowing device, wherein the rotary disc type seed sowing device is arranged on the top side of the rack, the land wheels are arranged on the bottom side of the rack, and the land wheels drive the rotary disc type seed sowing device to rotate through the transmission system. The invention adopts a mode of cutting cassava seed stalks into 15-20 cm long seed stems in advance, and changes a real-time seed cutting type cassava planter seed discharging mode by using a rotary disc type seed discharging device. The invention has the characteristics of simple structure, good working stability, uniform and accurate seed metering, high efficiency and the like.)

1. The utility model provides a wide narrow double row ridging formula cassava planter that surely plants in advance which characterized in that: including frame (1), land wheel (5), transmission system (9) and carousel formula seed metering ware (10), frame (1) top side is equipped with carousel formula seed metering ware (10), and the bottom side is equipped with land wheel (5), land wheel (5) drive carousel formula seed metering ware (10) through transmission system (9) and rotate.

2. The wide-narrow double-row ridging pre-cutting cassava planter according to claim 1, wherein: the rotary disc type seed metering device (10) comprises seed cups (10-1), protective covers (10-2) and a bottom plate (10-3), wherein the protective covers (10-2) are cylindrical and are arranged on the top side of the bottom plate (10-3), and the seed cups (10-1) are uniformly and rotatably arranged along the cylindrical inner walls of the protective covers (10-2).

3. The wide-narrow double-row ridging pre-cutting cassava planter according to claim 2, wherein: the bottom side of the bottom plate (10-3) is provided with a seed guide groove (4) through a mounting seat (10-5), and the seed discharging port of the seed cup (10-1) corresponds to the seed guide groove (4).

4. The wide-narrow double-row ridging pre-cutting cassava planter according to claim 1, wherein: the transmission system (9) comprises a bevel gear transmission mechanism (9-1), a chain transmission mechanism (9-3) and a seed sowing device transmission shaft (9-5), one end of the seed sowing device transmission shaft (9-5) is connected with a seed cup (10-1) through a pin, the other end of the seed sowing device transmission shaft is connected with a second-stage transmission shaft (9-2) through the bevel gear transmission mechanism (9-1), and the second-stage transmission shaft (9-2) is connected with a land wheel shaft (5-2) of the land wheel (5) through the chain transmission mechanism (9-3).

5. The wide-narrow double-row ridging pre-cutting cassava planter according to claim 4, wherein: the II-stage transmission shaft (9-2) is connected with the rack (1) through a bearing seat (9-4), and the seed metering device transmission shaft (9-5) is connected with the bottom plate (10-3) through a bearing (10-4).

6. The wide-narrow double-row ridging pre-cutting cassava planter according to claim 1, wherein: the top side of the frame (1) is respectively provided with a seed frame (6) and a seat (7), and the seed frame (6) and the seat (7) are respectively positioned at the front side and the rear side of the rotating disc type seed sowing device (10).

7. The wide-narrow double-row ridging pre-cutting cassava planter according to claim 1, wherein: the seed furrow opener is characterized in that a furrow opener (3), a soil covering plate (8) and a ridge protecting plate (2) are respectively arranged on the bottom side of the rack (1), the furrow opener (3) is located on the front side of the seed guiding groove (4), and the soil covering plate (8) is located on the rear side of the seed guiding groove (4).

8. The wide-narrow double-row ridging pre-cutting cassava planter according to claim 7, wherein: the left and right sides of the furrow opener (3), the seed guide groove (4) and the soil covering plate (8) are respectively provided with a ridge protecting plate (2).

9. The wide-narrow double-row ridging pre-cutting cassava planter according to claim 2, wherein: the number of the seed cups (10-1) is 8.

Technical Field

The invention relates to the technical field of agricultural machinery, in particular to a wide-narrow double-row ridging and pre-cutting cassava planter.

Background

The cassava is also called as cassava, Ipomoea batatas Lam, has a reputation of 'underground granary', 'starch king' and 'special crops', is called as three potatoes in the world together with sweet potatoes and potatoes, is an important raw material for producing starch, ethanol alcohol and feed, and is more important food crops and energy crops in various tropical and subtropical countries.

The application provides a wide-narrow double-row ridging and pre-cutting type cassava planter, based on an agricultural mode of wide-narrow double-row ridging planting of cassava, cassava seed stalks are cut into 15-20 cm seed stems in advance, the uniformity of the length of the seed stems is guaranteed, the seed damage rate of the real-time ridging type cassava planter is reduced through high-quality screening of the cassava seed stems, and the emergence rate of the cassava is improved; the cassava seed stems are packaged by the conveying frame, the conveying frame is placed on the seed frame of the planter, the cassava seed stems are taken out of the conveying frame by an operator and placed into the seed cups of the seed sowing device, the cassava seed stems are arranged into the planting ditches one by the seed cups, the cassava seed stems are planted accurately, the seed sowing uniformity of the cassava planter is improved, the seed sowing mode of the cassava planter is changed, and the problems that the real-time seed cutting type cassava planter damages the seeds, the cutting length is uneven and the planting uniformity is low are solved.

Disclosure of Invention

In order to overcome the defects of the existing real-time seed cutting type cassava planter, the seed discharging mode of the real-time seed cutting type cassava planter is changed by adopting a mode of cutting cassava seed stalks into 15-20 cm seed stems in advance and utilizing a rotary disc type seed discharging device.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a wide narrow double row ridging seed formula cassava planter in advance, includes frame, land wheel, transmission system and carousel formula seed metering ware, frame top side is equipped with the carousel formula seed metering ware, and the bottom side is equipped with the land wheel, the land wheel passes through transmission system and drives the carousel formula seed metering ware and rotate.

Carousel formula seed metering ware, including kind cup, protection casing and bottom plate, the protection casing is cylindric establishes the top side at the bottom plate, the even rotation of the cylindric inner wall of protection casing of edge of planting the cup is arranged.

The bottom side of the bottom plate is provided with a seed guide groove through a mounting seat, and the seed discharging opening of the seed cup corresponds to the seed guide groove.

The transmission system comprises a bevel gear transmission mechanism, a chain transmission mechanism and a seed sowing device transmission shaft, wherein one end of the seed sowing device transmission shaft is connected with the seed cup through a pin, the other end of the seed sowing device transmission shaft is connected with a II-stage transmission shaft through the bevel gear transmission mechanism, and the II-stage transmission shaft is connected with a wheel shaft of the land wheel through the chain transmission mechanism.

The II-stage transmission shaft is connected with the rack through a bearing seat, and the seed sowing device transmission shaft is connected with the bottom plate through a bearing.

The top side of the frame is respectively provided with a seed frame and a seat, and the seed frame and the seat are respectively positioned at the front side and the rear side of the rotating disc type seed metering device.

The bottom side of the frame is respectively provided with a furrow opener, a soil covering plate and a ridge protecting plate, the furrow opener is positioned at the front side of the seed guiding groove, and the soil covering plate is positioned at the rear side of the seed guiding groove.

And the left side and the right side of the furrow opener, the seed guide groove and the soil covering plate are respectively provided with a ridge protecting plate.

The number of the seed cups is 8.

The invention has the beneficial effects that:

the wide-narrow double-row ridging and pre-cutting cassava planter adopts a pre-cutting mode, ensures the uniformity of seed stem length, reduces the seed damage rate of the real-time seed cutting cassava planter and improves the emergence rate of cassava through high-quality screening of cassava seed stems; the rotary disc type seed sowing device is adopted to realize accurate planting of cassava seed stems, improve the planting uniformity of the cassava planter, change the seed sowing mode of the cassava planter, and solve the problems of seed damage, uneven cutting length and low planting uniformity of the real-time seed cutting type cassava planter. The invention has the characteristics of simple structure, good working stability, uniform and accurate seed metering, high efficiency and the like.

Drawings

The invention is further described with the aid of the accompanying drawings, in which the embodiments do not constitute any limitation, and for a person skilled in the art, without inventive effort, further drawings may be obtained from the following figures:

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a left side view of the present invention;

FIG. 4 is an elevational, three-axis view of the present invention;

FIG. 5 is a schematic view of the frame structure of the present invention;

FIG. 6 is a schematic view of a ridge protection plate structure according to the present invention;

FIG. 7 is a schematic view of the shank of the present invention;

FIG. 8 is a schematic view of the seed guide groove structure of the present invention;

FIG. 9 is a schematic view of the ground wheel structure of the present invention;

FIG. 10 is a schematic view of a seed frame structure of the present invention;

FIG. 11 is a schematic view of a seat construction of the present invention;

FIG. 12 is a schematic view of the construction of the covering panel of the present invention;

FIG. 13 is a schematic illustration of the transmission system of the present invention;

FIG. 14 is a schematic view of a carousel-type seed meter of the present invention;

FIG. 15 is a front view of the carousel seed meter of the present invention;

FIG. 16 is a top view of the carousel seed meter configuration of the present invention.

In the figure: 1-frame, 2-ridge protecting plate, 3-furrow opener, 4-seed guiding groove, 5-land wheel, 6-seed frame, 7-seat, 8-earth covering plate, 9-transmission system, 10-rotary-disc seed sowing device, 1-1-three-point suspension, 1-2-main frame, 1-3-land wheel supporting frame, 2-1-connecting plate, 2-2-ridge protecting plate, 2-3-tail plate, 2-4-ridge protecting plate connecting shaft, 2-5-ridge protecting plate mounting seat, 3-1-plough column, 3-2-plough head, 5-1-tyre, 5-2-land wheel shaft, 5-3-land wheel mounting seat, 6-1-supporting foot, 6-2-pillar, 6-3-baffle, 7-1-main seat body, 7-2-seat mounting rack, 8-1-earthing plate mounting seat, 8-2-seat connecting shaft, 8-3-earthing main plate, 9-1-bevel gear transmission mechanism, 9-2-II-stage transmission shaft, 9-3-chain transmission mechanism, 9-4-bearing seat, 9-5-seeding apparatus transmission shaft, 10-1-seed cup, 10-2-protective cover, 10-3-bottom plate, 10-4-bearing and 10-5-seeding apparatus mounting seat.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

As shown in fig. 1 to 16, the wide-narrow double-row ridging and seed pre-cutting cassava planter comprises a rack 1, a land wheel 5, a transmission system 9 and a rotary disc type seed sowing device 10, wherein the rotary disc type seed sowing device 10 is arranged on the top side of the rack 1, the land wheel 5 is arranged on the bottom side of the rack 1, and the rotary disc type seed sowing device 10 is driven to rotate by the land wheel 5 through the transmission system 9.

The rotary disc type seed metering device 10 comprises seed cups 10-1, a protective cover 10-2 and a bottom plate 10-3, wherein the protective cover 10-2 is cylindrical and is arranged on the top side of the bottom plate 10-3, and the seed cups 10-1 are uniformly and rotatably arranged along the cylindrical inner wall of the protective cover 10-2.

The bottom side of the bottom plate 10-3 is provided with a seed guide groove 4 through a seed metering device mounting seat 10-5, and a seed metering opening of the seed cup 10-1 corresponds to the seed guide groove 4.

The transmission system 9 comprises a bevel gear transmission mechanism 9-1, a chain transmission mechanism 9-3 and a seed sowing device transmission shaft 9-5, one end of the seed sowing device transmission shaft 9-5 is connected with a seed cup 10-1 through a pin, the other end of the seed sowing device transmission shaft is connected with a II-stage transmission shaft 9-2 through the bevel gear transmission mechanism 9-1, and the II-stage transmission shaft 9-2 is connected with a land wheel shaft 5-2 of the land wheel 5 through the chain transmission mechanism 9-3.

The II-stage transmission shaft 9-2 is connected with the rack 1 through a bearing seat 9-4, and the seed sowing device transmission shaft 9-5 is connected with the bottom plate 10-3 through a bearing 10-4.

The top side of the frame 1 is respectively provided with a seed frame 6 and a seat 7, and the seed frame 6 and the seat 7 are respectively positioned at the front side and the rear side of the rotating disc type seed metering device 10.

The bottom side of the frame 1 is respectively provided with a furrow opener 3, a soil covering plate 8 and a ridge protecting plate 2, the furrow opener 3 is positioned at the front side of the seed guiding groove 4, and the soil covering plate 8 is positioned at the rear side of the seed guiding groove 4.

The left and right sides of the furrow opener 3, the seed guide groove 4 and the soil covering plate 8 are respectively provided with a ridge protecting plate 2.

The number of the seed cups 10-1 is 8.

Specifically, the seed guide groove 4 is fixed on the rotary disc type seed metering device 10 and is used for guiding cassava seed stems discharged by the rotary disc type seed metering device 10 to the planting ditch. The seed frame 6 is used for placing a transport frame filled with cassava seed stems. The furrow opener 3 is used for opening planting furrows on the ridge surface. The transmission system 9 is used for transmitting the power of the land wheel 5 to the rotary disc type seed sowing device 10 so as to drive the rotary disc type seed sowing device 10 to work. The soil covering plate 8 is used for covering soil for the planting furrows with the cassava seed stems. The ridge protection plate 2 is used for protecting the completeness of ridge shapes.

The power of the rotary disc type seed sowing device 10 is provided by a land wheel 5 through a transmission system 9, a seed cup 10-1 for placing cassava seed stems is designed on the rotary disc type seed sowing device 10, and the seed cup 10-1 makes circular motion on the horizontal plane of the rack; the bottom plate of the rotary-disc seed metering device 10 is provided with a circular seed metering hole for discharging cassava seed stems in the seed cup 10-1. An operator on the seat 7 takes out cassava seed stems from the transportation frame on the seed frame 6, and places the cassava seed stems into seed cups 10-1 of a rotary disc type seed sowing device 10, and only 1 cassava seed stem is placed in each seed cup; cassava seed stems in the seed cup do circular motion along with the seed cup 10-1, the cassava seed stems move to the seed discharging holes on the bottom plate 10-3, then are discharged to the seed guide groove 4 from the seed discharging holes, and are conveyed to the planting ditch by the seed guide groove 4, and the seed discharging process is completed.

The machine frame 1 comprises a three-point suspension 1-1, a main frame 1-2 and a land wheel support frame 1-3, wherein the three-point suspension 1-1 is formed by welding a square pipe with the thickness of 16mm and 60 × 60 × mm made of Q345 and a plate with the thickness of 16mm and is used for connecting a tractor, the main frame 1-2 is formed by welding a square pipe with the thickness of 80 × 80 × mm made of Q345 and is used for fixedly mounting a rotary disc type seed metering device 10, a transmission system 9, a seed frame 6, a furrow opener 3, an earth covering plate 8, a ridge protecting plate 2 and a seat 7, 15 holes are designed in a fixed beam of the rotary disc type seed metering device 10, the mounting distance of the rotary disc type seed metering device 10 can be adjusted, the purpose of adjusting the planting row spacing of cassava seed stems is achieved, and the land wheel support frame 1-3 is formed by welding a square pipe with the thickness of 60.

The ridge protection plate 2 comprises a connecting plate 2-1, a ridge protection plate 2-2, a tail plate 2-3, a ridge protection plate connecting shaft 2-4 and a ridge protection plate mounting seat 2-5, wherein the connecting plate 2-1, the ridge protection plate 2-2 and the tail plate 2-3 are made of plates which are made of Q345 and are 5mm in thickness through sheet metal, the bending angle between the connecting plate 2-1 and the ridge protection plate 2-2 is 135 degrees, the bending angle between the ridge protection plate 2-2 and the tail plate 2-3 is 160 degrees, the ridge protection plate connecting shaft 2-4 is made of No. 45 round steel with the diameter of 25mm, and the length of the round steel is 1200 mm. Protect ridge board mount pad 2-5 and adopt the material to form through the panel beating for Q345, thickness is 10 mm's panel, and the total length is 475mm, and the angle of bending is 90, and intermediate lamella length is 85mm, and both sides are bent board length and are 195mm, and both sides are bent the board and design 1 concentric direction, the diameter is 17 mm's location round hole and 2 diameter and are 25 mm's 2-4 location round holes of protection ridge board connecting axle.

The furrow opener 3 comprises a plow standard 3-1 and a plowshare 3-2, and the plow standard 3-1 is fixed on the frame 1 by welding. The plowshare 3-2 is a universal plowshare in the middle of a rotary cultivator, is provided with mounting vacant positions with different heights, is fixed on the plow standard 3-1 through bolts, and is mounted according to the ditching depth required by actual production.

The land wheel 5 comprises a tire 5-1, a land wheel shaft 5-2 and a land wheel mounting seat 5-3, wherein the tire 5-1 is a universal tire with the diameter of 800 mm. The land wheel shaft 5-2 is formed by welding a tire fixing disc and a stepped shaft, wherein the tire fixing disc is made of Q345, the thickness of the tire fixing disc is 10mm, and the diameter of the tire fixing disc is 225 mm; the material that the step shaft adopted is 45 # round steel, and the total length is 268mm, and maximum diameter is 60mm, and minimum diameter is 35 mm. The land wheel mounting seat 5-3 consists of a bearing seat, a bearing and an end cover and is fixed on the land wheel support frame 1-3 by welding.

The seed frame 6 comprises supporting legs 6-1, supporting columns 6-2 and baffle plates 6-3, the step distance of the seed frame 6 is 400mm, the width is 500mm, the total length is 2100mm, at least 9 transportation frames with the specification of 600 × 420 × 300mm can be placed, the supporting legs 6-1 are made of Q345 40 × 40 × 2.5.5 mm square pipes and are 250mm in length, the seed frame 6 is fixed on the rack 1 through welding, the supporting columns 6-2 are made of Q345 40 × 40 × 2.5.5 mm square pipes and are 800mm in length, the baffle plates 6-3 are made of Q345 and are 4mm in thickness and are fixed on the supporting columns 6-2 through welding.

The seat 7 comprises a main seat body 7-1 and a seat mounting frame 7-2, the main seat body 7-1 is fixedly connected with the seat mounting frame 7-2 through bolts, the main seat body 7-1 adopts a universal seat cushion, the seat mounting frame 7-2 is formed by welding a 60 × 60 × 4mm square pipe made of Q345 and a plate with the thickness of 10mm, and the seat 7 is fixed on the rack 1 through bolts.

The earthing plate 8 comprises an earthing plate mounting seat 8-1, a seat connecting shaft 8-2 and an earthing main board 8-3, wherein the earthing plate mounting seat 8-1 is formed by welding plates with the width of 80mm, the total length of 180mm and the bending angle of 90 degrees with 2 round pipes with the length of 80mm, the outer diameter of 31mm and the inner diameter of 17 mm. The seat connecting shaft 8-2 is made of No. 45 round steel with the diameter of 25mm and the length of 750 mm. The earthing main board 8-3 is made of Q345 and is formed by cutting a board with the thickness of 5mm, the maximum width is 1100mm, and the minimum width is 580 mm.

The transmission system 9 comprises a bevel gear transmission mechanism 9-1, a second-stage transmission shaft 9-2, a chain transmission mechanism 9-3, a bearing seat 9-4 and a seed-metering device transmission shaft 9-5, wherein the transmission ratio of the bevel gear transmission mechanism 9-1 is 1:1, the bevel gear is a straight-tooth constant-diameter bevel gear, the modulus is 2, the number of teeth is 17, the second-stage transmission shaft 9-2 is 45-size round steel, the total length is 480mm, the maximum diameter is 35mm, the minimum diameter is 15mm, the chain type adopted by the chain transmission mechanism 9-3 is 12A, the number of teeth of a large chain wheel is 34, the number of teeth of a small chain wheel is 17, and the bearing seat 9-4 is a UCP207 type bearing seat and is fixed on the rack 1 through bolts. The transmission shaft 9-5 of the seed metering device adopts No. 45 round steel, the total length is 270mm, the maximum diameter is 25mm, and the minimum diameter is 15 mm.

The turntable type seed metering device 10 comprises a seed cup 10-1, a protective cover 10-2, a bottom plate 10-3, a bearing 10-4, a seed metering device mounting seat 10-5, a seed metering device transmission shaft 9-5, a bevel gear transmission mechanism 9-1 and a seed guide groove 4, wherein the seed cup 10-1 is made of steel pipes with the outer diameter of 102mm, the thickness of 2mm and the length of 200mm, 8 seed cups 10-1 are uniformly distributed in the circumferential direction of each seed metering device, solid round steel with the diameter of 20mm is adopted, the seed cups are welded and fixed with steel pipes with the outer diameter of 30mm, the thickness of 2mm and the length of 70mm to form a distribution type seed cup, the seed cups and the seed metering device transmission shaft 9-5 are positioned by adopting pins, the protective cover 10-2 is made of steel plates with the thickness of 3mm and the width of 200mm, the protective cover is rolled and pressed into a cylindrical shape and is fixed on the bottom plate 10-3 by welding, the bottom plate 10-3 is made of a steel plate cutting diameter 600mm, a bearing seat is provided with a bearing seat which can be provided with the installation diameter of 10-4, a long edge of a screw bolt installed in a groove of 580mm, a screw bolt of L mm and a screw bolt installed in a groove of a screw bolt of 580mm, the bottom plate with the length of a screw bolt of a length of 864 mm, a screw bolt of 580mm, a screw bolt of.

The ridge protection plate mounting seat is specifically mounted as shown in fig. 6, the ridge protection plate mounting seats 2-5 are mounted on 2 cross beams in the middle of the rack 1, the ridge protection plate mounting seats 2-5 are mounted on two sides of the cross beam in the middle of the rack 1, the ridge protection plate mounting seats 2-5 are fixed on positioning round holes with the diameter of 17mm through bolts (M16 × 130mm), the ridge protection plate 2 penetrates through the round tube holes of the connecting plate 2-1 through ridge protection plate connecting shafts 2-4, and two ends of the ridge protection plate connecting shafts 2-4 are hung on the positioning round holes with the diameter of 25mm of the ridge protection plate mounting seats 2-5.

As shown in figure 7, the furrow opener 3 is fixed on a second beam in the advancing direction of the planter through a plow standard 3-1 in a welding mode, the fixed distance between the two plow standards 3-1 is 600mm by taking the middle point of the beam as a reference, and the plowshare 3-2 is fixed on a positioning round hole of the plow standard 3-1 through a bolt (M12 × 45 mm).

The seed guide groove 4 is fixed on a seed metering device mounting seat 10-5 through welding as shown in figure 8, and the included angle between the seed guide groove 4 and the seed metering device mounting seat 10-5 is 70 degrees.

The land wheel 5 is as shown in fig. 9, the land wheel mounting seat 5-3 is fixedly welded on a land wheel support frame 1-3, two 6211 types of land wheel mounting seats are mounted in the land wheel mounting seat 5-3 and are fixedly positioned by bearing end covers on two sides, the land wheel shaft 5-2 is fixedly positioned according to the bore diameter of a deep groove ball bearing in the land wheel mounting seat 5-3, and the tire 5-1 is fixed on a disc of the land wheel shaft 5-2 by bolts (M18 × 35 mm).

As shown in figure 10, a seed frame 6 is characterized in that a support leg 6-1 is fixed with two longitudinal beams on the outermost side of a machine frame 1 through welding by the seed frame 6, the support leg 6-1 is fixed on a baffle 6-3 on the lowermost layer in a welding mode and is symmetrically arranged, the distance in the transverse direction is 1570mm, the distance in the longitudinal direction is 400mm, the length of a strut 6-2 is 800mm, the support leg is fixed on the baffle 6-3 on the lowermost layer in a welding mode, 4 corners of the baffle 6-3 are uniformly distributed, two more struts are uniformly distributed on the rear side, the length and width of the horizontal baffle 6-3 is 2100 × 500 × mm, the horizontal baffle 6-3 is fixed on the strut 6-2 in a welding mode with the interval distance of 400mm, the length and width of the vertical baffle 6-3 is 2100 × 500 × mm, the vertical baffle 6-3 is fixed on the 4 struts 6-2 on the rear side in a welding mode, and the baffle 6-3 with the length and width.

As shown in FIG. 11, the seat mounting rack 7-2 is fixed on the last cross beam of the main frame 1-2 by two bolts (M16 × 130mm), the symmetrical mounting distance of the two seat mounting racks 7-2 is 600mm, and the main seat body 7-1 is fixed on the flat plate of the seat mounting rack 7-2 by 4 bolts (M8 × 16 mm).

As shown in figure 12, when the seat mounting frame 7-2 is mounted, the soil covering plate mounting seat 8-1 and the seat mounting frame 7-2 are fixedly mounted by bolts (M16 × 130mm), and the seat connecting shaft 8-2 penetrates through a round hole in the soil covering plate mounting seat 8-1 and a round pipe of the soil covering main plate 8-3 and is fixedly hung on the two soil covering plate mounting seats 8-1.

The transmission system 9 is shown in figure 13, the bearing seats 9-4 are fixed on longitudinal beams of the main frame 1-2 through bolts, the bearing seats 9-4 close to chain wheels are fixed through bolts of M16 × 140mm, the bearing seats 9-4 close to bevel gears are fixed through bolts of M16 × 60mm, small chain wheels of the chain transmission mechanisms 9-3 are fixed on the ground wheel shafts 5-2 through flat keys, bolts (M10 × 30mm) and gear washers, large chain wheels of the chain transmission mechanisms 9-3 are fixed on the II-stage transmission shafts 9-2 through flat keys and bolts (M6 × 50mm), the II-stage transmission shafts 9-2 are fixedly installed on the two bearing seats 9-4, the large chain wheels are required to be aligned with the small chain wheels, the two bevel gears are matched, the two bevel gears of the bevel gear transmission mechanisms 9-1 are respectively fixed on the II-stage transmission shafts 9-2 and the seed metering device transmission shafts 9-5 through flat keys, bolts (M10 × 30mm) and gear washers, and the seed metering device transmission shafts 9-5 are fixedly installed on a base plate 10-3 of a rotary disk type seed metering device.

The turntable type seed metering device 10 is shown in figures 14, 15 and 16, a seed metering device mounting seat 10-5 is fixed on two middle cross beams of a main frame 1-2 through bolts (M16 × 140mm), the required center is consistent with a furrow opener 3, a bottom plate 10-3 is fixed on the seed metering device mounting seat 10-5 in a welding mode, a seed metering hole is required to be in a three-point suspension 1-1 direction, the designed bearing mounting seat is provided with a thrust ball bearing L B51304 and a deep groove ball bearing 6005 in sequence, a bearing assembly is positioned on a seed metering device transmission shaft 9-5 and is positioned through a bearing end cover and a stud (M6 × 20mm), a protective cover 10-2 is fixed on the bottom plate 10-3 in a welding mode, the required center line is consistent with the center line of a bearing mounting seat through hole center line of the bottom plate 10-3, and a seed cup assembly formed by welding the seed cups 10-1 is fixed on.

The working principle is as follows: before operation, cutting cassava seed stalks into seed stems with the length of 15-20 cm, packaging by adopting a transportation frame, and placing the transportation frame filled with the cassava seed stems on a seed frame 6 of a wide-narrow double-row ridging pre-cutting type cassava planter; when the cassava seed stem seeder works, the cassava seed stems rotate along with the seed cups 10-1 under the driving of the transmission system 9, the cassava seed stems are put into the seed cups 10-1 of the rotary disc type seed metering device 10, only 1 cassava seed stem is put into each seed cup 10-1, the seed cups 10-1 enable the cassava seed stems to rotate along with the seed cups 10-1 under the driving of the transmission system 9, when the cassava seed stems pass through the seed metering holes on the bottom plate 10-3, the cassava seed stems are under the action of self gravity, the cassava seed stems fall from the seed cup 10-1 to the seed guide groove 4, the cassava seed stems are discharged into the planting furrows by the seed guide groove 4, and after the cassava seed stems enter the planting furrows, the soil covering plate 8 covers the cassava seed stems and compacts the cassava seed stems to complete the planting process of the cassava seed stems.

The above embodiments are merely descriptions of the embodiments of the present invention, and not limitations to the spirit and scope of the present invention, and equivalent structures and direct or indirect applications of the technical solutions of the present invention by those skilled in the art should be within the scope of the present invention without departing from the design solutions of the present invention.