Taro seeding machine capable of improving survival rate of taro seedlings

Abstract

The invention provides a taro seeding machine capable of improving the survival rate of taro seedlings, and belongs to the technical field of agricultural machinery, the taro seeding machine comprises a seeding vehicle, the lower part of the seeding vehicle is sequentially provided with a ditching mechanism for digging grooves and a backfilling mechanism for backfilling the grooves from front to back; a feeding mechanism, a posture adjusting mechanism and a discharging mechanism are sequentially arranged at the upper part of the seeding vehicle from back to front. The feeding mechanism comprises a taro seedling storage box and a feeding conveying belt, the posture adjusting mechanism comprises a synchronous belt arranged in the front-back direction of the seeding vehicle and a plurality of adjusting bowls with arc-shaped containing surfaces, and the discharging mechanism comprises a discharging barrel longitudinally arranged on the front side of the upper portion of the seeding vehicle and a discharging through hole longitudinally formed in the discharging barrel. The taro seeding machine capable of improving the survival rate of the taro seedlings is simple in equipment structure, the taro seedlings can be buried into soil in a transverse state, the automatic seeding efficiency is high, and the survival rate of the taro seedlings is high.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural machinery, and more specifically, relates to a taro seeder capable of improving the survival rate of taro seedlings. Background Art

[0002] With the rapid development of agricultural mechanization, crop sowing technology continues to innovate to meet the higher requirements of modern agriculture for efficiency and precision. As an important economic crop, the planting method of taro has a crucial impact on its survival rate and yield. Compared with other crops, taro seedlings have a bud end, and planting with the bud end facing upward is the key to ensuring the survival rate. Most of the taro seeders currently on the market follow the design of potato seeders and adopt a "spoon chain" seedling planting method, but do not fully consider the requirement that the bud end needs to face upward when sowing taro seedlings. Although the sowing efficiency is high when taro seedlings are randomly sown, the survival rate is greatly reduced due to the difficulty in controlling the posture of the seedlings in the soil.

[0003] Although some current public technologies attempt to solve the problem of sowing taro seedlings with the bud end facing upward, there are still many limitations. For example, the Chinese patent "Taro Upright Seeder" with application number 201611189632.2, although it pays attention to the problem of upright sowing of taro, its design is too idealistic. Assuming that all taro seedlings are regular, standard egg-shaped and uniform in size, they can automatically maintain an upright state when passing through the seeding holes. But the reality is that the design difficulty of the taro seeding machine lies in the fact that the shape of the taro seedlings is very irregular. According to the shape, it can be roughly divided into ellipsoidal and spherical shapes, but even so, the shape difference of each type is still very large, and the size is uneven and the center of gravity position is not uniform. Therefore, the device is too strict with the shape of the taro seedlings, and it is difficult to meet the needs in practical applications. Another example is the Chinese patent application number 201510723154.8, entitled A Taro Planting Machine. Although the device also takes into account the problem of the taro seedlings buds facing upward, it needs to rely on manual adjustment and arrangement of the taro seedlings in advance, and the degree of automation is low. In addition, the device has a complex structure and low efficiency, which makes it difficult to adapt to large-scale production needs, limiting its market promotion.

[0004] Therefore, the market currently urgently needs a taro seeder that can ensure sowing efficiency while improving the survival rate of taro seedlings to meet the needs of modern agriculture for efficient and precise planting. Summary of the invention

[0005] The invention aims to provide a taro seeding machine capable of improving the survival rate of taro seedlings, aiming to solve the problems that the posture of taro seedlings buried in the soil is difficult to control, resulting in a reduced survival rate, or that the equipment for upright seeding of taro seedlings is too complicated and the effect is too low.

[0006] To achieve the above object, the technical solution adopted by the present invention is: to provide a taro seeding machine capable of improving the survival rate of taro seedlings, comprising a seeding vehicle, wherein a trenching mechanism for digging trenches and a backfilling mechanism for backfilling trenches are sequentially arranged on the lower part of the seeding vehicle from front to back, and a feeding mechanism, a posture adjustment mechanism and a feeding mechanism are sequentially arranged on the upper part of the seeding vehicle from back to front; The feeding mechanism comprises a taro seedling storage box and a feeding conveyor belt, wherein the taro seedling storage box is arranged at the upper rear side of the sowing vehicle, the feeding conveyor belt is obliquely arranged in the taro seedling storage box, the lower end of the feeding conveyor belt is located at the lower part of the taro seedling storage box, and the upper end of the feeding conveyor belt extends to the upper front side of the taro seedling storage box; The posture adjustment mechanism includes a synchronous belt arranged along the front-rear direction of the seeding vehicle and a plurality of adjustment bowls with an arc-shaped receiving surface, wherein the plurality of adjustment bowls are arranged on the outer surface of the synchronous belt in a rotational manner at intervals in sequence, and a reciprocating drive assembly is arranged on the inner side of the synchronous belt, and the reciprocating drive assembly reciprocates by driving the adjustment bowl on the upper layer of the synchronous belt in a transmission state, so as to adjust the taro seedlings in the adjustment bowl to a horizontal state; The material discharge mechanism includes a material discharge cylinder longitudinally arranged on the upper front side of the sowing vehicle and a material discharge through hole longitudinally opened in the material discharge cylinder, a material discharge channel extending to the lower part of the sowing vehicle is formed inside the material discharge through hole, and a plurality of material discharge plates are arranged at intervals from top to bottom in the material discharge channel, and the plurality of material discharge plates are cyclically descended to receive taro seedlings in a horizontal state and sow them in the grooves.

[0007] In a possible implementation, a material drop buffer mechanism is provided between the feeding mechanism and the posture adjustment mechanism, and the material drop buffer mechanism is used to receive the taro seedlings from the feeding conveyor belt and sequentially transfer them to the plurality of adjustment bowls; The material dropping buffer mechanism includes a temporary storage barrel, a material dropping tray, a material dropping motor and a material dropping baffle. The upper port of the temporary storage barrel is located below the upper end of the loading conveyor belt. The material dropping tray is longitudinally arranged below the lower port of the temporary storage barrel. A plurality of seedling storage bowls are arranged in the circumference of the material dropping tray. The seedling storage bowl has a seedling storage cavity facing outward. The material dropping motor drives the material dropping tray to rotate. The material dropping baffle is arranged on the side of the material dropping tray in the direction of rotation. A seedling dropping cavity for rotating downward and conveying in sequence is formed between the material dropping baffle and the seedling storage cavity.

[0008] In a possible implementation, a grabbing mechanism is provided between the posture adjustment mechanism and the material discharge mechanism, and the grabbing mechanism is used to sequentially grab a plurality of taro seedlings in a horizontal state on the adjustment bowl and transport them to a plurality of the material discharge plates; The grabbing mechanism includes a linear drive, a grabbing seat, a grabbing drive and two grippers. The linear drive is horizontally arranged above the synchronous belt and the blanking barrel. The linear drive is used to drive the grabbing seat to reciprocate between the synchronous belt and the blanking barrel. The two grippers are arranged on both sides of the grabbing seat. The lower end of the gripper is provided with a grabbing working end. The two grabbing working ends have grabbing chambers arranged opposite to each other. The grabbing drive is installed on the grabbing seat and is located between the two grippers. The grabbing drive is used to drive the two grabbing chambers to open and close.

[0009] In a possible implementation, the gripper is provided with a first rotating arm and a second rotating arm which are rotatable from top to bottom in sequence, the first rotating arm and the second rotating arm both extend inward and are rotatably installed on the grabbing seat respectively, a rotating gear is provided at the inner end of the first rotating arm, the lower end of the grabbing driving member is connected to a driving plate, a plurality of driving teeth are respectively provided on both sides of the driving plate from top to bottom, and the plurality of driving teeth on the same side of the driving plate correspond to the rotating gear meshing with the same side.

[0010] In a possible implementation, a material return mechanism is further provided on the upper portion of the seeding vehicle, and the material return mechanism is used to transfer the taro seedlings dropped between the posture adjustment mechanism and the unloading mechanism to the loading mechanism; The return material mechanism includes a material guide plate and a return material conveyor belt. The return material conveyor belt is arranged on the upper part of the sowing vehicle in a conveying direction from front to rear. The material guide plate is obliquely arranged on the upper part of the sowing vehicle. The upper end of the material guide plate is located below one end of the synchronous belt in the conveying direction, and the lower end of the material guide plate is located above the rear side of the return material conveyor belt.

[0011] In a possible implementation, a seedling placing mechanism is provided between the trenching mechanism and the backfilling mechanism, and the seedling placing mechanism is used to receive the taro seedlings from the placing mechanism and sow them in the trench; The seedling lowering mechanism comprises a fixed plate, a sliding assembly, a connecting rod assembly and a seedling lowering guide cylinder, the fixed plate is arranged at the lower part of the seeding vehicle, the sliding assembly is transversely arranged at the lower part of the fixed plate, the seedling lowering guide cylinder is located at the front side of the fixed plate, the connecting rod assembly comprises a driving connecting rod group and a posture correction connecting rod group, the driving connecting rod group comprises a driving rod and an auxiliary rod, the driving rod is hinged on the sliding assembly, one end of the auxiliary rod is connected to the fixed plate, the other end of the auxiliary rod is hinged to the middle part of the driving rod, and two connecting rods are hinged in sequence between the auxiliary rod and the driving rod, the posture adjustment rod group comprises two parallel upper connecting rods and two parallel lower connecting rods, the upper ends of the two upper connecting rods are hinged to the lower part of the seeding vehicle, the two upper connecting rods and the two lower connecting rods are hinged one by one through the intermediate rod, the driving rod and the two lower connecting rods are respectively hinged on both sides of the seedling lowering guide cylinder, and the hinge points of the two lower connecting rods and the seedling lowering guide cylinder are arranged in sequence from top to bottom.

[0012] In a possible implementation, two scrapers are relatively arranged at the lower port of the lower seedling guide cylinder, rotating frames are respectively arranged on both sides of the lower seedling guide cylinder, and a rotating shaft hinged to the lower seedling guide cylinder is arranged in the middle of the rotating frame, and the upper ends of the two scrapers are respectively hinged to the two rotating shafts, and the upper ends of the two rotating frames are connected with clutch lines, and the lower ends of the two rotating frames are connected with reset springs. The clutch lines are tightened to drive the lower ends of the two rotating frames away from each other, so as to drive the two scrapers to separate to scrape the bottom of the groove.

[0013] In a possible implementation, a limit support plate is provided in the inner cavity of the lower seedling guide cylinder, one end of the limit support plate is rotatably provided by a limit rotating shaft, one end of the limit rotating shaft extends to the outside of the lower seedling guide cylinder and is installed with a driven gear, an opening and closing motor is installed on the outer wall of the lower seedling guide cylinder, a driving gear is provided at the driving end of the opening and closing motor, the driving gear is meshed with the driven gear, and the opening and closing motor drives the driven gear to reciprocate through the driving gear, so as to switch the horizontal state and the vertical state of the limit support plate.

[0014] In a possible implementation, the reciprocating drive assembly includes two groups of tooth plate groups installed on the inner side of the synchronous belt and arranged on the left and right sides, each group of the tooth plate groups has a plurality of reversing tooth plates arranged at intervals along the length direction, so that the ends of the reversing tooth plates are provided with matching teeth, and the reversing tooth plates of the two groups of tooth plate groups are arranged alternately, and the lower end of the adjustment bowl is provided with an extension shaft passing through the synchronous belt, and the end of the extension shaft that penetrates into the synchronous belt is provided with a matching gear, and the matching gear is alternately meshed with the matching teeth on the plurality of reversing tooth plates, so as to drive the adjustment bowl on the upper layer of the synchronous belt in the transmission state to reciprocate.

[0015] In a possible implementation, the blanking barrel is rotatably arranged on the upper front side of the seeding vehicle, a through hole is opened in the axial middle part of the blanking barrel, and multiple blanking through holes are arranged in the circumference of the through holes. Blanking gears are respectively arranged on the inner sides of the upper ends and the lower ends of the blanking through holes, and a blanking chain is wound around the two blanking gears. Multiple fixing frames are arranged on the blanking chain from top to bottom, and multiple blanking plates are hinged to the multiple fixing frames one by one, and the rotation angle between the blanking plate and the fixing frame is 0-90° The beneficial effect of the taro seeding machine that can improve the survival rate of taro seedlings provided by the present invention is that compared with the prior art, the seeding vehicle walks in the field, the trenching mechanism first digs a trench in the field, the feeding conveyor belt continuously transmits the taro seedlings stored in the taro seedling storage box to the synchronous belt that continuously transmits, and the taro seedlings fall into the adjustment bowl on the upper layer of the synchronous belt in sequence. Under the action of the reciprocating drive component, the adjustment bowl reciprocates while being transmitted by the synchronous belt, and the taro seedlings in the adjustment bowl are gradually adjusted to a horizontal state. Multiple taro seedlings in the horizontal state fall into the blanking channel in sequence, and multiple taro seedlings fall onto multiple blanking plates in sequence. As the seeding vehicle moves, the taro seedlings on the blanking plates fall into the trench in sequence along the length direction, and finally the backfilling mechanism backfills the soil into the trench, thereby completing the sowing of the taro seedlings in the horizontal state. The taro seeding machine that can improve the survival rate of taro seedlings provided by the present invention has a simple equipment structure, can realize that the taro seedlings are buried in the soil in a horizontal state, has high automatic sowing efficiency, and has a high survival rate of the taro seedlings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 Schematic diagram of taro seedlings planted in different postures; Figure 2 This is a diagram showing the growth principle of taro seedlings when planted in a horizontal state; Figure 3 A three-dimensional taro planter capable of improving the survival rate of taro seedlings provided by the present invention Figure 1 ; Figure 4 A three-dimensional taro planter capable of improving the survival rate of taro seedlings provided by the present invention Figure 2 ; Figure 5 for Figure 4 A partial enlarged view of point E in the middle; Figure 6A schematic diagram of the structure of the material return mechanism provided by the present invention; Figure 7 A front view of a taro seeder capable of improving the survival rate of taro seedlings provided by the present invention; Figure 8 A schematic diagram of the structure of the feeding mechanism provided by the present invention; Fig. 9 A three-dimensional diagram of the material drop buffer mechanism provided by the present invention; Fig.10 A schematic diagram of the structure of the material drop buffer mechanism provided by the present invention; Fig.11 A three-dimensional diagram of the posture adjustment mechanism provided by the present invention; Fig.12 A three-dimensional diagram of the posture adjustment mechanism provided by the present invention without the synchronous belt; Fig.13 for Fig.12 A partial enlarged view of the M in the middle; Fig.14 A three-dimensional diagram of the grabbing mechanism provided by the present invention in an open state; Fig.15 for Fig.14 A partial enlarged view of the middle Q; Fig.16 A three-dimensional diagram of the gripping mechanism provided by the present invention in a closed state; Fig.17 A three-dimensional diagram of the material discharging mechanism provided by the present invention; Fig.18 A cross-sectional view of the blanking mechanism provided by the present invention; Fig.19 for Fig.18 A partial enlarged view of the H in the middle; Fig. 20 A first state diagram of the seedling lowering mechanism provided by the present invention; Fig.21 A second state diagram of the seedling lowering mechanism provided by the present invention; Fig. 22 A third state diagram of the seedling lowering mechanism provided by the present invention; Fig.23 for Fig.21 A local enlarged view of the N position in the middle; Fig.24 A three-dimensional diagram of the seedling lowering mechanism provided by the present invention; Fig.25 for Fig.24 A local enlarged view of point P in the middle.

[0018] In the figure: 110. Vehicle body; 120. Wheels; 130. Water and fertilizer irrigation device; 200. Ditching mechanism; 300, backfill mechanism; 400, feeding mechanism; 410, taro seedling storage box; 420, feeding conveyor belt; 500, material dropping buffer mechanism; 510, temporary storage bucket; 520, material dropping tray; 521, seedling storage bowl; 530, material dropping motor; 540, material dropping baffle; 600, posture adjustment mechanism; 610, synchronous belt; 620, adjustment bowl; 630, reversing gear plate; 640, extension shaft; 650, matching gear; 660, upper mounting plate; 670, lower mounting plate; 700, grabbing mechanism; 710, linear drive member; 720, grabbing seat; 730, grabbing drive member; 740, gripper; 741, grabbing chamber; 742, first rotating arm; 743, second rotating arm; 744, rotating gear; 750, driving plate; 800, material unloading mechanism; 810, material unloading cylinder; 820, material unloading through hole; 830, material unloading plate; 840, through hole; 850, material unloading chain; 860, fixed frame; 870, storage cylinder; 880, circumferential large gear; 890, limit block; 900, material return mechanism; 910, material guide plate; 920, material return conveyor belt; 1000, seedling lowering mechanism; 1100, fixing plate; 1200, sliding assembly; 1300, driving rod; 1400, auxiliary rod; 1500, connecting rod; 1600, upper connecting rod; 1700, lower connecting rod; 1800, middle rod; 1900, seedling lowering guide cylinder; 1910, scraper; 1920, rotating frame; 1930, rotating shaft; 1940, clutch line; 1950, reset spring; 1960, limit support plate; 1970, opening and closing motor. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] Unless explicitly defined otherwise, the use of terms such as "first," "second," or "third," etc., are intended to distinguish different objects rather than to describe a specific order.

[0021] Unless otherwise expressly defined, directional words such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, so they cannot be understood as limiting the specific scope of protection of the present invention.

[0022] See also Figure 3 , Figure 4 as well as Figure 7 , a taro seeding machine capable of improving the survival rate of taro seedlings provided by the present invention is now described. A taro seeding machine capable of improving the survival rate of taro seedlings comprises a seeding vehicle, the lower part of which is provided with a trenching mechanism 200 for digging trenches and a backfilling mechanism 300 for backfilling trenches in sequence from front to back, and the upper part of which is provided with a feeding mechanism 400, a posture adjustment mechanism 600 and a feeding mechanism 800 in sequence from back to front; the feeding mechanism 400 comprises a taro seedling storage box 410 and a feeding conveyor belt 420, the taro seedling storage box 410 is provided at the upper rear side of the seeding vehicle, the feeding conveyor belt 420 is obliquely provided in the taro seedling storage box 410, the lower end of the feeding conveyor belt 420 is located at the lower part of the taro seedling storage box 410, and the upper end of the feeding conveyor belt 420 extends to the upper front side of the taro seedling storage box 410; the posture adjustment mechanism 600 comprises a feeding mechanism 400 and a feeding conveyor belt 420 provided along the front and rear directions of the seeding vehicle. A synchronous belt 610 and a plurality of adjustment bowls 620 with arc-shaped receiving surfaces, wherein the plurality of adjustment bowls 620 are arranged on the outer surface of the synchronous belt 610 in rotation at intervals in sequence, and a reciprocating drive assembly is arranged on the inner side of the synchronous belt 610, and the reciprocating drive assembly drives the adjustment bowls 620 on the upper layer of the synchronous belt 610 in a transmission state to reciprocate, so as to adjust the taro seedlings in the adjustment bowls 620 to a horizontal state; the unloading mechanism 800 includes a discharge barrel 810 longitudinally arranged on the upper front side of the sowing vehicle and a discharge through hole 820 longitudinally opened in the discharge barrel 810, and a discharge channel extending to the lower part of the sowing vehicle is formed inside the discharge through hole 820, and a plurality of discharge plates 830 are arranged at intervals from top to bottom in the discharge channel, and the plurality of discharge plates 830 are cyclically descended to receive the taro seedlings in the horizontal state and sow them in the grooves.

[0023] The taro seeding machine provided by the present invention can improve the survival rate of taro seedlings. Compared with the prior art, the seeding vehicle walks in the field, the trenching mechanism 200 first digs a trench in the field, the feeding conveyor belt 420 continuously transmits the taro seedlings stored in the taro seedling storage box 410 to the continuously transmitted synchronous belt 610, and the taro seedlings fall into the adjustment bowl 620 on the upper layer of the synchronous belt 610 in sequence. Under the action of the reciprocating drive component, the adjustment bowl 620 reciprocates while being transmitted by the synchronous belt 610, and the taro seedlings in the adjustment bowl 620 are gradually adjusted to a horizontal state. Multiple taro seedlings in the horizontal state fall into the blanking channel in sequence, and multiple taro seedlings fall onto multiple blanking plates 830 in sequence. As the seeding vehicle moves, the taro seedlings on the blanking plates 830 fall into the trench in sequence along the length direction, and finally the backfilling mechanism 300 backfills the soil into the trench, thereby completing the sowing of the taro seedlings in the horizontal state. The invention provides a taro seeding machine capable of improving the survival rate of taro seedlings. The equipment has a simple structure, can bury the taro seedlings in the soil in a horizontal state, has high automatic seeding efficiency, and has a high survival rate of the taro seedlings.

[0024] Please note: Please refer to Figure 1 and Figure 2 The shapes of taro seedlings are mainly composed of two types, ellipsoid or spherical. The two ends of the taro seedlings form a bud end and a root end respectively, and the bud end and the root end exist at the two ends of the long axis of the ellipsoid or the two ends of the sphere, so that the bud end and the root end of the taro seedling form a long axis structure. When the taro seedling is in a horizontal state, its circumference has an arc-shaped outer wall structure.

[0025] The taro seedlings can survive when they are planted vertically with the buds pointing upwards or when they are planted horizontally. However, when the taro seedlings are planted vertically with the buds pointing downwards, the seedlings will die. Taro seedlings have their own specific growth characteristics. The roots are geotropic, that is, the roots will grow in the direction of gravity so that they can better take root in the soil and absorb water and nutrients from the soil; while the stems are geotropic and will grow upwards away from gravity, so that the taro seedlings can develop normally, grow branches and leaves for photosynthesis, etc. When the taro seedlings are planted vertically with the buds pointing downwards, this planting method completely violates the natural growth law of the taro seedling stems' geotropism. As the part that will develop into the stem later, the buds cannot grow upwards normally and will encounter growth obstacles in the early stages of growth, which will lead to abnormal growth of the taro seedlings and eventually death of the seedlings. According to the geotropism of the roots and the geotropism of the stems, horizontal planting will not affect the survival rate of the taro seedlings, and the taro seedlings will still grow straight on their own. Horizontal planting can ensure that all taro seedlings will not have the phenomenon of bud ends facing downward, fully respecting the two important growth characteristics of the taro seedlings' geotropism and the geotropism of the stems. Under this planting method, the roots of the taro seedlings can naturally grow toward the bottom of the soil, take root smoothly and begin to absorb nutrients and water, laying a good material foundation for the growth of the taro seedlings. The stem part can grow upward away from the ground according to the geotropism, and gradually grow leaves and other above-ground parts, so that the taro seedlings can normally carry out a series of physiological activities such as photosynthesis and respiration, and the entire growth process can proceed in an orderly manner, so it will not affect the survival rate of the taro seedlings, and the taro seedlings can still grow healthily and straight.

[0026] The seeding vehicle comprises a vehicle body 110 and a vehicle driving mechanism, wherein the vehicle body 110 is a flat structure, and the vehicle driving mechanism comprises four wheels 120 and a driving motor driving two front wheels 120 and / or two rear wheels 120. According to the requirements of different fields, the front drive mode, rear drive mode or four-wheel drive mode can be realized by adjusting the position of the driving motor.

[0027] In addition, in order to achieve synchronous fertilization of the sown taro seedlings, a water fertilizer irrigation device 130 is also installed on the upper end surface of the vehicle body 110. The water fertilizer irrigation device 130 includes a water fertilizer box and a discharge pipe. A pressure pump is installed on the discharge pipe, and a nozzle is installed at the end of the discharge pipe. The discharge pipe is fixed on the vehicle body 110 and the nozzle is facing the groove direction. The water fertilizer can be sprayed on the taro seedlings in the groove, and finally the seedlings are buried together through the backfill mechanism 300.

[0028] See also Figure 5 The taro seedling storage box 410 is fixed to the rear side of the upper end surface of the vehicle body 110 through a support frame. The taro seedling storage box 410 is an open cylindrical structure with four inclined surfaces, which facilitates the taro seedlings to continuously slide to the bottom, so as to complete the continuous feeding of the taro seedlings. The outer surface of the feeding conveyor belt 420 is installed with baffles at intervals. With the transmission action of the feeding conveyor belt 420, the taro seedlings are sequentially transmitted from the bottom of the taro seedling storage box 410 to the upper end of the feeding conveyor belt 420 under the action of the baffles, and finally fall into the adjustment bowl 620 on the synchronous belt 610 in sequence.

[0029] See also Figures 9 and 10 A material dropping buffer mechanism 500 is arranged between the feeding mechanism 400 and the posture adjustment mechanism 600. The material dropping buffer mechanism 500 is used to receive the taro seedlings from the feeding conveyor belt 420 and transfer them to multiple adjustment bowls 620 in sequence. The material dropping buffer mechanism 500 includes a temporary storage barrel 510, a material dropping tray 520, a material dropping motor 530 and a material dropping baffle 540.

[0030] The temporary storage barrel 510 is a conical structure with an upper port and a lower port at both ends. The taro seedlings fall from the feeding conveyor belt and fall from the upper port of the temporary storage barrel 510 to the lower port of the temporary storage barrel 510. The inclined inner wall of the temporary storage barrel 510 can guide the taro seedlings to accurately enter the lower port of the temporary storage barrel 510.

[0031] The material drop tray 520 is longitudinally arranged below the lower port of the temporary storage barrel 510, and a plurality of seedling storage bowls 521 are arranged circumferentially of the material drop tray 520, and the seedling storage bowl 521 has a seedling storage cavity facing outward, and the material drop motor 530 drives the material drop tray 520 to rotate. As the material drop tray 520 rotates, the seedling storage bowl 521 rotates to the right below the lower port of the temporary storage barrel 510, and the taro seedlings in the temporary storage barrel 510 fall into the seedling storage cavity of the seedling storage bowl 521, and the material drop tray 520 continues to rotate, and the seedling storage bowl 521 storing the taro seedlings rotates to the inner side of the material drop baffle 540, and the material drop baffle 540 is arranged on the side of the material drop tray 520 to rotate, and a seedling drop cavity for sequentially rotating downward and transmitting is formed between the material drop baffle 540 and the seedling storage cavity, and the taro seedlings are transmitted downward in the seedling drop cavity. The falling baffle 540 can effectively block the taro seedlings and prevent them from falling from the side until the taro seedlings rotate to the bottom of the falling baffle 540. The taro seedlings are no longer restricted and will fall into the adjustment bowl 620 one by one.

[0032] Specifically, the seedling storage cavity is a hemispherical cavity, which can only accommodate one taro seedling, and is generally designed to be the average size of 1-1.5 taro seedlings. When the seedling storage cavity and the falling baffle 540 cooperate to clamp the taro seedling, the taro seedling will not fall in the seedling storage cavity, ensuring that the taro seedling can be stably transmitted.

[0033] See also Figures 14 to 16 A grabbing mechanism 700 is provided between the posture adjustment mechanism 600 and the unloading mechanism 800. The grabbing mechanism 700 is used to sequentially grab the taro seedlings in a horizontal state on multiple adjustment bowls 620 and transport them to multiple unloading plates 830. The grabbing mechanism 700 includes a linear drive member 710, a grabbing seat 720, a grabbing drive member 730 and two grippers 740.

[0034] The linear drive member 710 is horizontally disposed above the loading conveyor belt 420 and the synchronous belt 610 , and is used to drive the grab seat 720 to reciprocate between the synchronous belt 610 and the blanking barrel 810 . Among them, the linear drive component 710 is installed in the area between the synchronous belt 610 and the top of the blanking barrel 810 through the gripper 740 fixing frame 860. The linear drive component 710 adopts a screw transmission structure. The grabbing seat 720 is fixed on the sliding block of the screw transmission structure. Two grippers 740 are arranged on both sides of the grabbing seat 720. The lower end of the gripper 740 is provided with a grabbing working end. The two grabbing working ends have grabbing chambers 741 arranged relatively. The grabbing drive component 730 is installed on the grabbing seat 720 and is located between the two grippers 740. The grabbing drive component 730 is used to drive the two grabbing chambers 741 to open and close, thereby realizing the grabbing of taro seedlings from the adjusting bowl 620 and placing the taro seedlings on the blanking plate 830 of the blanking channel of the blanking barrel 810.

[0035] Specifically, the gripper 740 is provided with a first rotating arm 742 and a second rotating arm 743 which are rotated from top to bottom in sequence. The first rotating arm 742 and the second rotating arm 743 both extend inward and are respectively rotated and installed on the grab seat 720. A rotating gear 744 is provided at one end of the inner side of the first rotating arm 742. The lower end of the grab driving member 730 is connected to a driving plate 750. Both sides of the driving plate 750 are provided with a plurality of driving teeth from top to bottom. The plurality of driving teeth on the same side of the driving plate 750 are correspondingly engaged with the rotating gear 744 on the same side. The grab driving member 730 is a hydraulic cylinder which is vertically fixed to the top of the grab seat 720, and the piston end of the hydraulic cylinder is arranged downward. The upper end of the driving plate 750 is connected to the piston end, and both sides of the driving plate 750 are longitudinally provided with a plurality of driving teeth. The lead screw transmission structure drives the grab seat 720 to move to the upper area of ​​the adjustment bowl 620 to be grabbed by the sliding block, the piston end of the hydraulic cylinder drives the driving plate 750 to move upward, the two rotating gears 744 rotate outward, and under the restriction of the second rotating arm 743, the two first rotating arms 742 drive the two grippers 740 to move downward and approach each other, and the two grab chambers 741 close, so as to grab the taro seedlings on the adjustment bowl 620. Then the lead screw transmission structure drives the grab seat 720 to move to the upper part of the blanking channel of the blanking barrel 810 through the sliding block, the piston end of the hydraulic cylinder drives the driving plate 750 to move downward, the two rotating gears 744 rotate inward, under the restriction of the second rotating arm 743, the two first rotating arms 742 drive the two grippers 740 to move upward and away from each other, and the two grab chambers 741 separate, so that the taro seedlings in the grasping state fall onto the blanking plate 830 of the blanking channel.

[0036] Preferably, the inner wall of the grabbing chamber 741 is coated with a high-elastic sponge. When grabbing the taro seedlings, the high-elastic sponge can form a flexible buffer for the taro seedlings, and the taro seedlings can be "clamped" by the elasticity of the high-elastic sponge to prevent the taro seedlings from changing their posture or even being damaged during the transfer process.

[0037] See also Figure 5 and Figure 6 The upper part of the sowing vehicle is also provided with a return mechanism 900, which is used to transfer the taro seedlings dropped between the posture adjustment mechanism 600 and the unloading mechanism 800 to the loading mechanism 400, and the return mechanism 900 includes a guide plate 910 and a return conveyor belt 920. The return conveyor belt 920 is arranged on the upper part of the sowing vehicle in a conveying direction from front to back, and the guide plate 910 is obliquely arranged on the upper part of the sowing vehicle, the upper end of the guide plate 910 is located below one end of the synchronous belt 610 in the conveying direction, and the lower end of the guide plate 910 is located above the rear side of the return conveyor belt 920.

[0038] Specifically, the upper end surface of the body 110 of the seeding vehicle is equipped with two systems distributed on the left and right, and the above-mentioned systems include a feeding mechanism 400, a material-dropping buffer mechanism 500, a gripping mechanism 700, and a posture adjustment mechanism 600. The number of the return material conveyor belt 920 of the return material mechanism 900 is one, and the return material conveyor belt 920 is located between the two systems and extends in the length direction of the vehicle body 110. The return material conveyor belt 920 specifically includes a horizontal section and an inclined section, the horizontal section is located between the posture adjustment mechanism 600 and the material-dropping mechanism 800, and the inclined section is located between the posture adjustment mechanism 600 and the material-dropping mechanism 800. The number of the guide plates 910 of the return material mechanism 900 is two, and the two guide plates 910 are symmetrically inclined. The upper end of the guide plate 910 is below one end of the synchronous belt 610 in the transmission direction, and is used to receive the taro seedlings that accidentally fall. The lower end of the guide plate 910 is overlapped on the return material transmission belt. The taro seedlings roll along the guide plate 910 to the return material transmission belt, and then are transmitted to the taro seedling storage box 410 through the return material conveyor belt 920, so that the taro seedlings that accidentally fall can be effectively recovered and reused.

[0039] See also Figure 20 to Figure 25 A seedling placing mechanism 1000 is arranged between the furrowing mechanism 200 and the backfilling mechanism 300. The seedling placing mechanism 1000 is used to receive the taro seedlings from the feeding mechanism 800 and sow them in the furrow. The seedling placing mechanism 1000 includes a fixing plate 1100, a sliding assembly 1200, a connecting rod assembly and a seedling placing guide cylinder 1900.

[0040] The fixed plate 1100 is arranged at the lower part of the seeding vehicle, the sliding assembly 1200 is arranged transversely at the lower part of the fixed plate 1100, the lower seedling guide cylinder 1900 is located at the front side of the fixed plate 1100, and the sliding assembly 1200 includes a transverse slide and a transverse slider, the transverse slide is located at the lower part of the fixed plate 1100, and the transverse slider is slidably arranged in the transverse slide. In addition, the sliding assembly 1200 also includes a power mechanism, which adopts a hydraulic cylinder, the cylinder body of the hydraulic cylinder is hinged to the lower end surface of the vehicle body 110 and is located at the rear side of the fixed plate 1100, and the piston end of the hydraulic cylinder is hinged to the transverse slider, and the piston end of the locking hydraulic cylinder is extended or shortened, so that the transverse slider can slide back and forth in the transverse slide.

[0041] The connecting rod assembly includes a driving connecting rod group and a posture correction connecting rod group. The driving connecting rod group includes a driving rod 1300 and an auxiliary rod 1400. The rear end of the driving rod 1300 is hinged on the transverse slider, the front end of the driving rod 1300 is bent downward and hinged on one side of the lower seedling guide cylinder 1900, the upper end of the auxiliary rod 1400 is hinged on the fixed plate 1100, and the lower end of the auxiliary rod 1400 is hinged on the driving rod 1300 to form a downward bending area. The transverse slider drives the driving rod 1300 to move laterally, and the driving rod 1300 forms an upward and downward displacement of the lower seedling guide cylinder 1900 in the circumferential direction with a radius of the auxiliary rod 1400 under the restriction of the auxiliary rod 1400. In addition, two connecting rods 1500 are hinged in sequence between the auxiliary rod 1400 and the driving rod 1300. The driving rod 1300 , the auxiliary rod 1400 and the two connecting rods 1500 form a quadrilateral connecting rod structure, which can evenly distribute the force and reduce local stress concentration, thereby improving the stability of the movement of the driving rod 1300 and the auxiliary rod 1400 and the interaction between the two.

[0042] The posture adjustment rod group includes two parallel upper connecting rods 1600 and two parallel lower connecting rods 1700, the upper ends of the two upper connecting rods 1600 are hinged at the lower part of the sowing vehicle, the two upper connecting rods 1600 and the two lower connecting rods 1700 are hinged one by one through the intermediate rod 1800, the driving rod 1300 and the two lower connecting rods 1700 are respectively hinged at both sides of the lower seedling guide cylinder 1900, and the hinge points of the two lower connecting rods 1700 and the lower seedling guide cylinder 1900 are arranged in sequence from top to bottom. The two upper connecting rods 1600, the two lower connecting rods 1700 and the intermediate rod 1800 can constrain the displacement direction of the lower seedling guide cylinder 1900 itself, and the lower seedling guide cylinder 1900 is always in a vertical state, ensuring that the taro seedlings are smoothly sown into the groove through the lower seedling guide cylinder 1900.

[0043] The traditional way of planting seedlings generally uses a seedling planting device to sow taro seedlings vertically downward. At this time, the sowing equipment is moving forward, and the seedling planting device will inevitably be subject to resistance from the soil in front. Long-term use will cause the seedling planting device to deform and reduce its lifespan. Excessive resistance may even cause the seedling planting device to break.

[0044] Specific reference Figure 20 to Figure 22 The three accompanying drawings are three state diagrams of the seedling placing mechanism 1000 during the seedling placing process. When the seedling placing mechanism 1000 is performing the seedling placing action, the seedling placing guide cylinder 1900 connected to the end of the lower connecting rod 1700 can move in a downwardly convex arc trajectory, thereby completing the seedling placing from top to bottom and from front to back. During the seedling placing process, the seedling placing guide cylinder 1900 will not be affected by the reaction force of the soil, thereby extending its service life and reducing the risk of breakage.

[0045] Two scrapers 1910 are relatively arranged at the lower end of the lower seedling guide cylinder 1900, and rotating frames 1920 are respectively arranged on both sides of the lower seedling guide cylinder 1900. A rotating shaft 1930 hinged to the lower seedling guide cylinder 1900 is arranged in the middle of the rotating frame 1920, and the upper ends of the two scrapers 1910 are respectively hinged on the two rotating shafts 1930, and the upper ends of the two rotating frames 1920 are connected to a clutch line 1940, and the lower ends of the two rotating frames 1920 are connected to a reset spring 1950. The clutch line 1940 is tightened to drive the lower ends of the two rotating frames 1920 to move away from each other, so as to drive the two scrapers 1910 to separate to scrape the bottom of the groove of the scraper 1910.

[0046] When sowing taro seedlings, the lower seedling guide cylinder 1900 descends to the bottom of the groove, the clutch line 1940 tightens, thereby driving the ends of the two scrapers 1910 to rotate and separate from each other, and the two scrapers 1910 scrape the bottom of the groove 1910, thereby forming a relatively gentle sowing pit, and the taro seedlings fall into the sowing pit from the lower seedling guide cylinder 1900, reducing the situation where the taro seedlings roll again during sowing and cause the sowing posture to change. After the sowing of a taro seedling is completed, the lower seedling guide cylinder 1900 rises and resets, the clutch line 1940 relaxes, and under the elastic force of the reset spring 1950, the two scrapers 1910 rotate in the opposite direction and close together to complete the reset.

[0047] The scraper 1910 is a bucket structure, and the side where the two scrapers 1910 are away from each other is provided with a soil storage bucket. When the two scrapers 1910 are away from each other, the scraped soil can be retained in the soil storage bucket to prevent the soil from falling back into the sowing pit and affecting the sowing of taro seedlings.

[0048] A limiting support plate 1960 is arranged in the inner cavity of the lower seedling guide cylinder 1900, one end of the limiting support plate 1960 is rotatably arranged by a limiting rotating shaft, one end of the limiting rotating shaft extends to the outside of the lower seedling guide cylinder 1900 and is installed with a driven gear, an opening and closing motor 1970 is installed on the outer wall of the lower seedling guide cylinder 1900, a driving gear is arranged at the driving end of the opening and closing motor 1970, the driving gear is meshed with the driven gear, and the opening and closing motor 1970 drives the driven gear to reciprocate through the driving gear, so as to switch the limiting support plate 1960 between the horizontal state and the vertical state.

[0049] The upper end surface of the limiting support plate 1960 is an inwardly concave arc surface. When the taro seedling falls into the lower seedling guide cylinder 1900, the limiting support plate 1960 is in a horizontal state under the drive of the opening and closing motor 1970, and the taro seedling falls horizontally onto the inwardly concave arc surface at the upper end of the limiting support plate 1960, thereby ensuring the stability of the taro seedling. When the taro seedling is sown, the limiting support plate 1960 is driven by the opening and closing motor 1970 to flip downward to a vertical state, at which time, the two scrapers 1910 are in a separated state, and the taro seedling remains in a horizontal state and falls into the sowing pit.

[0050] See also Figures 8 to 10 The reciprocating drive assembly includes two sets of tooth plate groups installed on the inner side of the synchronous belt 610 and arranged on the left and right sides. Each set of tooth plate groups has a plurality of reversing tooth plates 630 arranged at intervals along the length direction, so the ends of the reversing tooth plates 630 are provided with matching teeth. The reversing tooth plates 630 of the two sets of tooth plate groups are arranged alternately. The lower end of the adjustment bowl 620 is provided with an extension shaft 640 that passes through the synchronous belt 610. The end of the extension shaft 640 that penetrates into the synchronous belt 610 is provided with a matching gear 650. The matching gear 650 is alternately meshed with the matching teeth on the plurality of reversing tooth plates 630, so as to drive the adjustment bowl 620 on the upper layer of the synchronous belt 610 in the transmission state to reciprocate.

[0051] When the synchronous belt 610 is transmitted forward and drives multiple adjustment bowls 620 to transmit in a circular manner, the matching gear 650 at the lower end of the adjustment bowl 620 on the upper layer of the synchronous belt 610 will continuously and alternately mesh with the adapting teeth on both sides, and the adjustment bowl 620 forms a reciprocating rotation when the upper layer of the synchronous belt 610 moves. When the adjustment bowl 620 is switched, the taro seedling will maintain the motion inertia of the original rotation direction, and this inertia will cause the taro seedling to form a continuous lateral shaking in the adjustment bowl 620. During the shaking process, the waist of the taro seedling (the middle area of ​​the lateral state) is elliptical, and the adjustment bowl 620 also has an arc cavity. The two are adapted to each other, and the shaking of the taro seedling under the action of inertia will cause the arc shape of its waist to be adaptively adjusted with the arc cavity of the adjustment bowl 620. Through such adaptive adjustment, the taro seedling can be adjusted to a lateral state in the adjustment bowl 620. The posture adjustment mechanism 600 utilizes the structural characteristics of the taro seedlings themselves and the structure of the adjustment bowl 620. The adjustment bowl 620 forms inertia during the reciprocating rotation and adjusts itself adaptively, ultimately meeting the needs of horizontal sowing of the taro seedlings.

[0052] At this time, the taro seedlings contained in the adjustment bowl 620 will gradually be adjusted to a horizontal state during this reciprocating rotation, thereby meeting the needs of horizontal planting.

[0053] Preferably, the outer surface of the synchronous belt 610 is provided with lower mounting plates 670 at intervals, and the upper mounting plate 660 is provided in parallel on the lower mounting plate 670. The lower mounting plate 670 and the upper mounting plate 660 are connected at both sides by connecting bolts respectively. The extended rotating shaft 640 of the adjustment bowl 620 passes through the upper mounting plate 660 and the lower mounting plate 670, and the lower end thereof is connected to the matching gear 650. Preferably, a shock absorbing spring is mounted on the connecting bolt, and the shock absorbing spring can generate vibration on both sides of the upper mounting plate 660 and the lower mounting plate 670. When the adjustment bowl 620 reciprocates, vibration is generated on both sides, so that the middle part of the taro seedling can be adjusted to fit in the adjustment bowl 620 as much as possible and be in a stable horizontal state.

[0054] See also Figures 13 to 15 The blanking barrel 810 is rotatably arranged on the upper front side of the seeding vehicle. The blanking barrel 810 is fixedly installed through a roller seat. A circumferential large gear 880 is arranged on the outer periphery of the blanking barrel 810. A roller motor is installed on the motor fixing frame 860 on one side of the blanking barrel 810. A small gear is installed on the driving end of the roller motor. The small gear is meshed with the circumferential large gear 880, thereby driving the blanking barrel 810 to rotate.

[0055] A through hole 840 is provided in the axial middle of the blanking barrel 810, and a plurality of blanking through holes 820 are arranged in the circumference of the through hole 840. Blanking gears are respectively arranged on the inner side of the upper end and the inner side of the lower end of the blanking through hole 820. A blanking chain 850 is wound around the two blanking gears. The blanking gear at the upper end is driven to rotate by a corresponding motor, so that the blanking chain 850 rotates continuously. A plurality of fixing frames 860 are arranged on the blanking chain 850 from top to bottom, and a plurality of blanking plates 830 are hinged to the plurality of fixing frames 860 one by one. The rotation angle between the blanking plates 830 and the fixing frames 860 is 0-90°. The blanking plates 830 can rotate relative to the fixing frames 860 to a state of fitting the blanking chain 850 and a state of being perpendicular to the blanking chain 850. The upper end surface of the blanking plate 830 is an inner concave arc surface, which can keep the taro seedlings stable on the blanking plate 830. Two adjacent blanking plates 830 form a "single room" in the blanking through hole 820, and the taro seedlings maintain a horizontally stable state in the single room.

[0056] Specifically, one side of the blanking plate 830 is provided with a horizontal rotating shaft 1930, and a limit block 890 is arranged in the middle of the rotating shaft 1930. When the blanking plate 830 is rotated to a state perpendicular to the fixing frame 860, the end face of the limit block 890 abuts against the back side of the fixing frame 860, thereby limiting the further rotation of the blanking plate 830, and the taro seedlings fall horizontally into the groove under the support of the blanking plate 830.

[0057] Preferably, a plurality of storage barrels 870 are also provided in the circumferential direction of the through hole 840, and the plurality of storage barrels 870 are arranged one by one between the plurality of blanking through holes 820 at intervals. The setting structure of the storage barrel 870 is the same as the setting mode of the blanking through hole 820, and is also provided with a blanking chain 850 and a blanking plate 830. When the seeder is operated in an environment with extremely bumpy road conditions, part of the taro seedlings in the adjustment bowl 620 may fall onto the synchronous belt 610. This external interference error will cause the taro seedling posture adjustment process to be incoherent (one adjustment bowl 620 of the synchronous belt 610 has a seedling and the other does not, which results in one seedling and the other not in the sowing pit, resulting in missed sowing), disrupting the normal circulation pattern of the taro seedlings, and then causing the generation of collaborative operation errors. In addition, photoelectric sensors are installed on the top of the storage tube 870 and the blanking through hole 820 respectively. Since there is a certain time window from the photoelectric sensor response to the rotation of the synchronous belt 610 and then the taro seedling falling to the bottom of the temporary storage barrel 510. Since the blanking tray 520 is rotating all the time, there is no taro seedling in the temporary storage barrel 510 during the window period, resulting in no seedling in the blanking tray 520, and then resulting in no seedling in the adjustment bowl 620 of the synchronous belt 610, which will also cause cooperative work errors. Therefore, the design of the storage tube 870 is very necessary. The design purpose of the storage tube 870 is to compensate for the errors that occur in the above process. It can temporarily store the taro seedlings adjusted by posture, so as to ensure that each time the seedlings are planted, there will be no situation of no seedlings due to errors in each link, and the accuracy and integrity of the taro seedling sowing are guaranteed.

[0058] Specifically, when the taro seedlings on the adjustment bowl 620 reach the bottom of the grabbing mechanism 700, the two grabbers 740 are used to grab the taro seedlings into the storage cylinder 870. Two operations are performed simultaneously. First, the photoelectric sensor above the storage cylinder 870 detects that the taro seedlings fall onto the corresponding blanking plate 830, and a signal responds. The blanking chain 850 corresponding to the storage cylinder 870 moves downward by one unit (one unit is the spacing distance between the two blanking plates 830). Second, the blanking chain 850 in the blanking through hole 820 moves downward by one unit at the same time, and the taro seedlings of the first layer fall into the groove. After that, the blanking cylinder 810 rotates a specific angle and switches to the corresponding receiving position of the next storage cylinder 870. The above process is repeated until the photoelectric sensor at the bottom of any drop hole 820 can no longer detect the taro seedlings. The drop barrel 810 rotates half of the above-mentioned specific angle. At this time, the roles of the storage barrel 870 and the drop hole 820 are exchanged, that is, the storage barrel 870 starts to drop the seedlings, and the drop hole 820 starts to receive the seedlings.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A taro seeder capable of improving the survival rate of taro seedlings, characterized in that: The invention comprises a seeding vehicle, wherein the lower part of the seeding vehicle is provided with a trenching mechanism (200) for trenching and a backfilling mechanism (300) for backfilling the trench in sequence from front to back, and the upper part of the seeding vehicle is provided with a loading mechanism (400), a posture adjustment mechanism (600) and a unloading mechanism (800) in sequence from back to front; The feeding mechanism (400) comprises a taro seedling storage box (410) and a feeding conveyor belt (420), wherein the taro seedling storage box (410) is arranged at the upper rear side of the sowing vehicle, and the feeding conveyor belt (420) is arranged obliquely in the taro seedling storage box (410), the lower end of the feeding conveyor belt (420) is located at the lower part of the taro seedling storage box (410), and the upper end of the feeding conveyor belt (420) extends to the upper front side of the taro seedling storage box (410); The posture adjustment mechanism (600) comprises a synchronous belt (610) arranged along the front-rear direction of the seeding vehicle and a plurality of adjustment bowls (620) with arc-shaped receiving surfaces, wherein the plurality of adjustment bowls (620) are arranged on the outer surface of the synchronous belt (610) in a sequentially spaced rotation manner, and a reciprocating drive assembly is arranged on the inner side of the synchronous belt (610). The reciprocating drive assembly drives the adjustment bowls (620) on the upper layer of the synchronous belt (610) in a transmission state to reciprocate, so as to adjust the taro seedlings in the adjustment bowls (620) to a horizontal state; The material discharge mechanism (800) includes a material discharge cylinder (810) longitudinally arranged on the upper front side of the sowing vehicle and a material discharge through hole (820) longitudinally opened in the material discharge cylinder (810), wherein a material discharge channel extending to the lower part of the sowing vehicle is formed inside the material discharge through hole (820), and a plurality of material discharge plates (830) are arranged at intervals from top to bottom in the material discharge channel, and the plurality of material discharge plates (830) are cyclically descended to receive taro seedlings in a horizontal state and sow them in the grooves.

2. A taro seeder that can improve the survival rate of taro seedlings as claimed in claim 1, characterized in that, A material drop buffer mechanism (500) is provided between the feeding mechanism (400) and the posture adjustment mechanism (600), and the material drop buffer mechanism (500) is used to receive the taro seedlings from the feeding conveyor belt (420) and sequentially transfer them to the plurality of adjustment bowls (620); The drop material buffer mechanism (500) comprises a temporary storage barrel (510), a drop material tray (520), a drop material motor (530) and a drop material baffle (540); the upper end of the temporary storage barrel (510) is located below the upper end of the loading conveyor belt (420); the drop material tray (520) is longitudinally arranged below the lower end of the temporary storage barrel (510); a plurality of seedling storage bowls (521) are arranged in the circumferential direction of the drop material tray (520); the seedling storage bowls (521) are provided with seedling storage cavities facing outward; the drop material motor (530) drives the drop material tray (520) to rotate; the drop material baffle (540) is arranged on the side of the drop material tray (520) that rotates; and a drop seedling cavity for sequentially rotating and conveying downward is formed between the drop material baffle (540) and the seedling storage cavity.

3. A taro seeder that can improve the survival rate of taro seedlings as claimed in claim 1, characterized in that, A grabbing mechanism (700) is provided between the posture adjustment mechanism (600) and the material discharge mechanism (800), and the grabbing mechanism (700) is used to sequentially grab the taro seedlings in a horizontal state on the plurality of adjustment bowls (620) and transport them to the plurality of material discharge plates (830); The grabbing mechanism (700) comprises a linear drive component (710), a grabbing seat (720), a grabbing drive component (730) and two grippers (740), wherein the linear drive component (710) is horizontally arranged above the synchronous belt (610) and the blanking barrel (810), and the linear drive component (710) is used to drive the grabbing seat (720) to reciprocate between the synchronous belt (610) and the blanking barrel (810), and the two grippers (740) are arranged on both sides of the grabbing seat (720), and a grabbing working end is arranged at the lower end of the gripper (740), and the two grabbing working ends are provided with grabbing chambers (741) arranged opposite to each other, and the grabbing drive component (730) is installed on the grabbing seat (720) and is located between the two grippers (740), and the grabbing drive component (730) is used to drive the two grabbing chambers (741) to open and close.

4. A taro seeder that can improve the survival rate of taro seedlings as claimed in claim 3, characterized in that, The gripper (740) is provided with a first rotating arm (742) and a second rotating arm (743) which are rotatably arranged from top to bottom in sequence. The first rotating arm (742) and the second rotating arm (743) are both extended inward and are rotatably installed on the grab seat (720) respectively. A rotating gear (744) is arranged at one inner end of the first rotating arm (742). The lower end of the grab driving member (730) is connected to a driving plate (750). A plurality of driving teeth are arranged on both sides of the driving plate (750) from top to bottom respectively. The plurality of driving teeth on the same side of the driving plate (750) correspond to the rotating gear (744) on the same side.

5. A taro seeder that can improve the survival rate of taro seedlings as claimed in claim 1, characterized in that, The upper part of the sowing vehicle is also provided with a material return mechanism (900), and the material return mechanism (900) is used to transfer the taro seedlings dropped between the posture adjustment mechanism (600) and the unloading mechanism (800) to the loading mechanism (400); The material return mechanism (900) comprises a material guide plate (910) and a material return conveyor belt (920); the material return conveyor belt (920) is arranged on the upper part of the sowing vehicle in a conveying direction from front to rear; the material guide plate (910) is arranged obliquely on the upper part of the sowing vehicle; the upper end of the material guide plate (910) is located below one end of the synchronous belt (610) in the conveying direction; and the lower end of the material guide plate (910) is located above the rear side of the material return conveyor belt (920).

6. A taro seeder that can improve the survival rate of taro seedlings as claimed in claim 1, characterized in that, A seedling placing mechanism (1000) is provided between the trenching mechanism (200) and the backfilling mechanism (300), and the seedling placing mechanism (1000) is used to receive the taro seedlings from the material placing mechanism (800) and sow them in the trench; The seedling lowering mechanism (1000) comprises a fixed plate (1100), a sliding assembly (1200), a connecting rod assembly and a seedling lowering guide cylinder (1900); the fixed plate (1100) is arranged at the lower part of the seeding vehicle; the sliding assembly (1200) is transversely arranged at the lower part of the fixed plate (1100); the seedling lowering guide cylinder (1900) is located at the front side of the fixed plate (1100); the connecting rod assembly comprises a driving connecting rod group and a posture correction connecting rod group; the driving connecting rod group comprises a driving rod (1300) and an auxiliary rod (1400); the driving rod (1300) is hinged to the sliding assembly (1200); one end of the auxiliary rod (1400) is connected to the fixed plate (1100); the other end of the auxiliary rod (1400) is hinged to the fixed plate (1100); The auxiliary rod (1400) is connected to the middle part of the driving rod (1300), and two connecting rods (1500) are hinged in sequence between the auxiliary rod (1400) and the driving rod (1300). The posture adjustment rod group includes two parallel upper connecting rods (1600) and two parallel lower connecting rods (1700). The upper ends of the two upper connecting rods (1600) are hinged to the lower part of the seeding vehicle. The two upper connecting rods (1600) and the two lower connecting rods (1700) are hinged in a one-to-one correspondence through an intermediate rod (1800). The driving rod (1300) and the two lower connecting rods (1700) are respectively hinged on both sides of the lower seedling guide cylinder (1900), and the hinge points of the two lower connecting rods (1700) and the lower seedling guide cylinder (1900) are arranged in sequence from top to bottom.

7. A taro seeder that can improve the survival rate of taro seedlings as claimed in claim 6, characterized in that, Two scrapers (1910) are arranged opposite to each other at the lower end of the seedling guide cylinder (1900), rotating frames (1920) are arranged on both sides of the seedling guide cylinder (1900), a rotating shaft (1930) hinged to the seedling guide cylinder (1900) is arranged in the middle of the rotating frame (1920), the upper ends of the two scrapers (1910) are hinged to the two rotating shafts (1930) respectively, the upper ends of the two rotating frames (1920) are connected with clutch lines (1940), the lower ends of the two rotating frames (1920) are connected with reset springs (1950), the clutch lines (1940) are tightened to drive the lower ends of the two rotating frames (1920) to move away from each other, and are used to drive the two scrapers (1910) to separate to scrape the bottom of the groove of the scraper (1910).

8. A taro seeder that can improve the survival rate of taro seedlings as claimed in claim 6, characterized in that, The inner cavity of the lower seedling guide cylinder (1900) is provided with a limiting support plate (1960), one end of the limiting support plate (1960) is rotatably arranged via a limiting rotating shaft, one end of the limiting rotating shaft extends to the outside of the lower seedling guide cylinder (1900) and is provided with a driven gear, an opening and closing motor (1970) is provided on the outer wall of the lower seedling guide cylinder (1900), a driving gear is provided at the driving end of the opening and closing motor (1970), the driving gear is meshed with the driven gear, and the opening and closing motor (1970) drives the driven gear to reciprocate through the driving gear, so as to switch the horizontal state and the vertical state of the limiting support plate (1960).

9. A taro seeder that can improve the survival rate of taro seedlings as described in any one of claims 1-8, characterized in that, The reciprocating drive assembly includes two groups of tooth plate groups installed on the inner side of the synchronous belt (610) and arranged on the left and right sides, each group of the tooth plate groups has a plurality of reversing tooth plates (630) arranged at intervals along the length direction, so that the end of the reversing tooth plate (630) has matching teeth, and the reversing tooth plates (630) of the two groups of the tooth plate groups are arranged alternately, and the lower end of the adjustment bowl (620) is provided with an extension shaft (640) passing through the synchronous belt (610), and one end of the extension shaft (640) penetrating into the synchronous belt (610) is provided with a matching gear (650), and the matching gear (650) is alternately meshed with the matching teeth on the plurality of reversing tooth plates (630) to drive the adjustment bowl (620) on the upper layer of the synchronous belt (610) in the transmission state to reciprocate.

10. A taro seeder that can improve the survival rate of taro seedlings as described in any one of claims 1-8, characterized in that, The blanking barrel (810) is rotatably arranged on the upper front side of the seeding vehicle, and a through hole (840) is opened in the axial middle part of the blanking barrel (810). A plurality of blanking through holes (820) are arranged in the circumference of the through hole (840). Blanking gears are respectively arranged on the inner sides of the upper ends and the lower ends of the blanking through holes (820). A blanking chain (850) is wound around the two blanking gears. A plurality of fixing frames (860) are arranged on the blanking chain (850) from top to bottom. A plurality of blanking plates (830) are hinged to the plurality of fixing frames (860) one by one, and the rotation angle between the blanking plates (830) and the fixing frames (860) is 0-90°.

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