Automatic seedling dropping and transplanting planter

Abstract

The invention discloses an automatic seedling dropping and transplanting planter, which belongs to the technical field of seedling transplanting and planting, and is characterized in that a seedling tray automatic seedling feeding mechanism is arranged on a multi-connecting-rod duckbilled automatic transplanting and power linkage mechanism, and a circulating type interval seedling dropping mechanism is arranged below the seedling tray automatic seedling feeding mechanism; the circulating type interval seedling throwing mechanism is located above the multi-connecting-rod duckbilled automatic transplanting and power linkage mechanism, and the ditching and soil covering mechanisms are arranged on the front side and the rear side of the multi-connecting-rod duckbilled automatic transplanting and power linkage mechanism; the multi-connecting-rod duckbilled automatic transplanting and power linkage mechanism is arranged behind the circulating type interval seedling throwing mechanism and provides power for the circulating type interval seedling throwing mechanism, and the seedling raising disc automatic seedling feeding mechanism pushes seedlings into the circulating type interval seedling throwing mechanism, then feeds the seedlings to the multi-connecting-rod duckbilled automatic transplanting and power linkage mechanism and finally feeds the seedlings to the ditching and soil covering mechanism. The automatic seedling dropping and transplanting planter provided by the invention is suitable for green Chinese onion planting, can improve the mechanical degree of green Chinese onion seedling dropping and transplanting, realizes the automatic work of the whole process, and is relatively high in working efficiency.

Description

Technical Field

[0001] This invention relates to an automatic seedling transplanting machine, belonging to the field of seedling transplanting technology. Background Technology

[0002] Currently, my country's scallion production lacks specialized machinery and related technologies at each stage. Scallion seedling cultivation is primarily done manually; ditching operations have a mechanization level of 70%–80%, but this largely relies on other crop cultivation machinery; scallion transplanting is mostly done manually, with semi-automatic transplanting machinery having a low adoption rate; hilling operations have a relatively high mechanization rate, but key technologies need to be overcome; harvesting is basically manual, with existing machinery only capable of tasks like digging and loosening the soil during scallion harvesting, and even then, its utilization rate is limited. In summary, current technologies for scallion seedling transplanting have a low level of mechanization, making it difficult to automate the entire process and resulting in low work efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide an automatic seedling transplanting machine that can improve the mechanization of scallion seedling transplanting, realize the automation of the whole process, and achieve high work efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] The device includes a multi-link automatic transplanting and power linkage mechanism for duckbill beetles. An automatic seedling tray feeding mechanism is mounted on top of this mechanism, and a circulating interval seeding feeding mechanism is positioned below it. The circulating interval seeding feeding mechanism is located above the multi-link automatic transplanting and power linkage mechanism. Ditching and soil-covering mechanisms are located on both the front and rear sides of the multi-link automatic transplanting and power linkage mechanism. The multi-link automatic transplanting and power linkage mechanism is positioned behind the circulating interval seeding feeding mechanism and provides power to it. The automatic seedling tray feeding mechanism pushes seedlings into the circulating interval seeding feeding mechanism, which then delivers the seedlings to the multi-link automatic transplanting and power linkage mechanism. The multi-link automatic transplanting and power linkage mechanism then delivers the seedlings to the ditching and soil-covering mechanism, which opens trenches, plants the seedlings, and then covers them with soil.

[0006] The automatic seedling feeding mechanism for the seedling trays includes a conveyor belt feeding mechanism and a crank-slider type cone-shaped seedling pushing mechanism. The conveyor belt feeding mechanism includes opposing track side plates. The track side plates are connected to the bottom frame plate of the multi-link duckbill automatic transplanting and power linkage mechanism via a first aluminum profile and a third aluminum profile. The first aluminum profile and the third aluminum profile are fixedly connected to the track side plates, and also to the bottom frame plate. A motor mounting plate is installed between the seedling tray side plates. A seedling feeding motor mount is installed on the motor mounting plate. The seedling feeding motor shaft extends from a pre-drilled hole in the track side plate. The seedling feeding motor shaft is connected to a light shaft via a seedling feeding motor coupling. The light shaft is connected to a seedling feeding drive synchronous pulley. A seedling feeding synchronous belt is meshed onto the seedling feeding drive synchronous pulley and the seedling feeding driven synchronous belt. The seedling feeding driven synchronous belt is connected to the drive belt shaft of a belt conveyor mechanism. The belt conveyor mechanism includes a fourth aluminum profile arranged opposite each other. A drive belt shaft aluminum seat and a driven belt are respectively provided at both ends of the fourth aluminum profile. The aluminum profile with shaft is fixed to the first and third aluminum profiles. The aluminum profiles, the drive belt shaft aluminum profile, and the driven roller aluminum profile are fitted and fixed to the track side plate. The two ends of the drive belt shaft pass through the reserved holes in the track side plate and the bearing inner ring of the drive belt shaft aluminum profile. The two ends of the driven belt roller pass through the reserved holes in the track side plate and extend into the slots in the driven roller aluminum profile. The roller adjusting bolt passes through the threaded hole at the top of the driven roller aluminum profile and the through holes at both ends of the driven belt roller and is then fixed to the adjusting bolt. The driven belt roller is positioned such that the driving belt shaft and the driven belt roller pass through the conveyor belt. A grid is fixed on the conveyor belt, and the grid is positioned flush with the conveyor belt. A seedling tray bending track is connected to the side of the track side plate, and a certain gap is left between the seedling tray bending track and the track side plate to form a seedling tray track. A seedling tray straight track is installed on the aluminum profile, and a gap is left between the seedling tray straight track and the track side plate to form a seedling tray track. A baffle is connected between the two seedling tray bending tracks.

[0007] The crank-slider type conical seedling pushing mechanism includes a base plate, which is installed between the two side rails. A seedling pushing motor mount is installed on each side rail, and a seedling pushing motor is mounted on the mount. A gear transmission mechanism, a crank-slider seedling pushing mechanism, and a gear-crank connecting shaft fixing ring are installed on the base plate. The crank-slider seedling pushing mechanism is mounted above the gear-crank connecting shaft fixing ring, which secures the gear transmission mechanism. The seedling pushing motor drives the crank-slider seedling pushing mechanism through the gear transmission mechanism. The gear transmission mechanism includes four flange bearings installed within the base plate. The flange bearing is provided with gear crank connecting shafts. A first gear, a second gear, a third gear, and a fourth gear are respectively installed on the four gear crank connecting shafts. The first gear, the second gear, the third gear, and the fourth gear mesh with each other in sequence. The gear crank connecting shaft corresponding to the first gear is connected to the seedling pushing motor through the seedling pushing motor coupling. The crank slider seedling pushing mechanism includes a slide groove, which is installed on the base plate of the crank slider cone-shaped seedling pushing mechanism. A push rod is slidably arranged in the slide groove. The front end of the push rod is connected to a cone. The rear end of the push rod is rotatably connected to one end of a connecting rod through a pin. The other end of the connecting rod is rotatably connected to one end of the crank through the pin. The other end of the crank is installed on the gear crank connecting shaft.

[0008] The cyclical intermittent seedling feeding mechanism includes a seedling feeding mechanism base plate, which is fixed to a second aluminum profile. The second aluminum profile is laterally fixed to the first and third aluminum profiles. A slide is provided on the seedling feeding mechanism base plate. Several rhomboid bearing seats are installed on the seedling feeding mechanism base plate. The drive sprocket shaft passes through a pre-drilled hole in the seedling feeding mechanism base plate and the inner hole of the rhomboid bearing seat. Set screws for fixing the drive sprocket shaft are provided on the rhomboid bearing seat. The tensioning wheel shaft passes through the inner hole of the rhomboid bearing seat. Fixed to the base plate of the seedling feeding mechanism, the driven sprocket shaft passes through the inner hole of the diamond-shaped bearing seat and is fixed to the base plate of the seedling feeding mechanism. A driven bevel gear is fixed to the lower section of the driving sprocket shaft. A driving sprocket is fixed to the driving sprocket shaft. A driven sprocket is fixed to the driven sprocket shaft. A tensioning wheel is fixed to the tensioning wheel shaft. Several chain links mesh with the driving sprocket, driven sprocket and tensioning wheel. Funnel-shaped seedling cups are fixed to the chain links. There is a chain link between two adjacent funnel-shaped seedling cups.

[0009] The multi-link duckbill automatic transplanting and power linkage mechanism includes two bottom frame side plates, which are symmetrically fixed on both sides of the bottom frame plate. A fixing ring is provided inside the bottom frame side plate, through which the multi-link duckbill automatic transplanting mechanism passes. The two multi-link duckbill automatic transplanting mechanisms are symmetrically arranged on both sides of the bottom frame plate. A power linkage mechanism is installed above the bottom frame plate, which drives the multi-link duckbill automatic transplanting mechanism to move.

[0010] The multi-link duckbill automatic transplanting mechanism includes two sets of sixth and seventh aluminum profiles respectively disposed on both sides of the bottom frame plate. Fifth aluminum profiles are transversely arranged on the sixth and seventh aluminum profiles. Bearing seats are fixed to each of the two fifth aluminum profiles. A driven shaft passes through and is fixed to the two bearing seats. A first support shaft and a second support shaft pass through the side plates of the bottom frame plate and are fixed with the fixing rings. Both ends of the first support shaft are rotatably connected to one end of each of the two first rocker arms. Flange bearings are installed at the bottom of the first rocker arms, and the inner rings of the flange bearings are inserted into both sides of the first support shaft. Snap rings are installed at the ends of the first support shafts and outside the flange bearings. The two ends of the second support shaft... The driven shaft is rotatably connected to one end of each of the two second rockers. A flange bearing is installed at the bottom of the second rocker, and the inner ring of the flange bearing passes through both sides of the second support shaft. A retaining ring is installed at the end of the second support shaft and outside the flange bearing. The two ends of the driven shaft are fixedly connected to one end of the crank. The other end of the crank is rotatably connected to one end of the connecting rod through a first pin. The duckbill connecting rod is hinged to one end of the first rocker and the other end of the connecting rod through a second pin. The duckbill connecting rod is hinged to the other end of the second rocker through a third pin. Cotter pins are inserted into the first, second, and third pins. A cam pull rod is installed on the fifth aluminum profile, and a cam is fixed on the driven shaft.

[0011] The duckbill transplanting mechanism includes a funnel inserted into a circular hole at the front end of the duckbill connecting rod. The left and right duckbills are mounted on the front end of the duckbill connecting rod via a double-headed grooved pin. The double-headed grooved pin is fixed on both sides with snap rings. The left duckbill is fixed to prevent it from rotating. The tension spring hooks the left and right duckbills on both sides. A brake bead is fixed on the right duckbill. One end of the brake cable is fixed on the cam pull rod, and the other end passes through the left duckbill and is fixed on the brake bead.

[0012] The power linkage mechanism includes three bearing seats, which are fixed on a riser pad located on the bottom frame plate. A motor mount is provided on the sixth aluminum profile, and a transplanting motor is fixed on the motor mount. The transplanting motor is coaxially fixed to one end of the drive shaft via a coupling. The other end of the drive shaft passes through one of the bearing seats and is fixed with a set screw. A second and fourth synchronous pulley are installed on the drive shaft and fixed with an internal set screw. A third synchronous pulley is fixed on the driven shaft. A bevel gear driven shaft passes through two of the bearing seats and is fixed with a set screw. A first synchronous pulley is fixed in the middle. A long synchronous belt is tightly fitted on the first and second synchronous pulleys, and a short synchronous belt is tightly fitted on the third and fourth synchronous pulleys. Bevel gears are fixed at both ends of the bevel gear driven shaft and mesh with the driven bevel gear.

[0013] The trenching and covering mechanism includes two lead screw support seats, which are fixed to the bottom frame plate. Each lead screw support seat has a bearing inner hole for mounting the two ends of a positive and negative threaded lead screw. Nut sliders are mounted on the threads of the positive and negative threaded lead screws with different helical directions. The two nut sliders are symmetrically installed about the joint of the positive and negative threads. The two nut sliders are connected to the upper ends of two pull rods, and the upper ends of the two pull rods are connected to two hinge seats. The hinge seats are fixed to the tenth aluminum profile. A handle is mounted on one end of each positive and negative threaded lead screw. A thirteenth aluminum profile is fixed to both sides of the tenth aluminum profile. A trenching plow blade fixing frame is fixed to the thirteenth aluminum profile. A positioning screw is connected to the trenching plow blade, and the thirteenth aluminum profile is connected to the trenching plow blade via a set screw. The trenching plow blade is installed below the positioning screw and its position is adjusted and fixed by the positioning screw.

[0014] The soil covering device lifting mechanism includes a hinge, an electric push rod, a first electric push rod hinge seat, an electric push rod fixing seat, and a second electric push rod hinge seat. The electric push rod fixing seat is fixed to the side of the bottom frame side plate. The first electric push rod hinge seat is fixed to the electric push rod fixing seat. The second electric push rod hinge seat is fixed to the eleventh aluminum profile. The two electric push rods are fixed to the first and second electric push rod hinge seats by positioning bolts and positioning holes at both ends of the electric push rods. The hinge... The eleventh aluminum profile is connected to the twelfth aluminum profile and the eleventh aluminum profile on both sides respectively. The twelfth aluminum profile is fixed to the bottom frame plate. The eleventh aluminum profile is connected to the eighth aluminum profile and the ninth aluminum profile on both sides. The eighteenth aluminum profile and the ninth aluminum profile are connected to the fourteenth aluminum profile laterally. The fourteenth aluminum profile is connected to the soil covering frame. The soil covering frame is connected to the soil covering plate and fixed to the soil covering frame by bolts. The soil covering wheels are connected to the bottom two sides of the soil covering frame by positioning bolts.

[0015] The beneficial effects of this invention: This invention provides an automatic seedling transplanting machine. An automatic seedling tray feeding mechanism is installed on the multi-link duckbill automatic transplanting and power linkage mechanism. The automatic seedling tray feeding mechanism is equipped with a circulating interval seedling feeding mechanism. Ditching and soil-covering mechanisms are installed on both the front and rear sides of the multi-link duckbill automatic transplanting and power linkage mechanism. The automatic seedling tray feeding mechanism pushes seedlings into the circulating interval seedling feeding mechanism, which then delivers the seedlings to the multi-link duckbill automatic transplanting and power linkage mechanism. The multi-link duckbill automatic transplanting and power linkage mechanism delivers the seedlings to the ditching and soil-covering mechanism, which then covers the seedlings with soil after planting them in the ditch. The seedlings automatically pass through the automatic seedling tray feeding mechanism, the circulating interval seedling feeding mechanism, the multi-link duckbill automatic transplanting and power linkage mechanism, and the ditching and soil-covering mechanism in sequence to complete the seedling transplanting and planting. This improves the mechanization of scallion seedling transplanting, automates the entire process, and achieves high work efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an automatic seedling transplanting and planting machine according to the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the automatic seedling feeding mechanism of the seedling tray of an automatic seedling transplanting machine according to the present invention;

[0018] Figure 3 , Figure 4 This is a three-dimensional structural diagram of the automatic seedling feeding mechanism of the automatic seedling transplanting machine of the present invention;

[0019] Figure 5 This is a three-dimensional structural diagram of the belt conveyor mechanism of an automatic seedling transplanting machine according to the present invention;

[0020] Figure 6 This is a three-dimensional schematic diagram of the crank-slider type cone-shaped seedling pushing mechanism of an automatic seedling transplanting machine according to the present invention;

[0021] Figure 7 This is a three-dimensional schematic diagram of the gear transmission mechanism of an automatic seedling transplanting machine according to the present invention;

[0022] Figure 8 This is a three-dimensional schematic diagram of the crank-slider pushing mechanism of an automatic seedling transplanting machine according to the present invention;

[0023] Figure 9 and Figure 10 This is a three-dimensional schematic diagram of the cyclic interval seedling feeding mechanism of an automatic seedling feeding and transplanting machine according to the present invention;

[0024] Figure 11 This is a three-dimensional schematic diagram of the chain conveying mechanism of an automatic seedling transplanting machine according to the present invention;

[0025] Figure 12 This is a three-dimensional schematic diagram of the multi-link duckbill automatic transplanting and power linkage mechanism of an automatic seedling transplanting and planting machine according to the present invention;

[0026] Figure 13 This is a three-dimensional structural diagram of the multi-link duckbill automatic transplanting mechanism of an automatic seedling transplanting machine according to the present invention;

[0027] Figure 14 This is a three-dimensional structural diagram of the duckbill transplanting mechanism of an automatic seedling transplanting machine according to the present invention;

[0028] Figure 15 This is a three-dimensional structural diagram of the power linkage mechanism of an automatic seedling transplanting and planting machine according to the present invention;

[0029] Figure 16 This is a three-dimensional structural diagram of the trenching and soil covering mechanism of an automatic seedling transplanting machine according to the present invention;

[0030] Figure 17 This is a three-dimensional structural diagram of the furrow opener lifting mechanism of an automatic seedling transplanting machine according to the present invention;

[0031] Figure 18 This is a three-dimensional structural diagram of the soil covering device lifting mechanism of an automatic seedling transplanting machine according to the present invention.

[0032] The attached figures are labeled as follows:

[0033] 1-Automatic seedling tray feeding mechanism; 1-1-Seedling conveyor belt feeding mechanism; 1-1-1-Seedling feeding motor; 1-1-2-Seedling feeding motor coupling; 1-1-3-Seedling feeding drive synchronous pulley; 1-1-4-Seedling feeding synchronous belt; 1-1-5-Belt conveyor mechanism; 1-1-6-Seedling tray linear track; 1-1-7-Seedling tray bending track; 1-1-8-Baffle; 1-1-9-Grid; 1-1-10-Track side plate; 1-1-11- First aluminum profile; 1-1-12-Second aluminum profile; 1-1-13-Third aluminum profile; 1-1-14-Seedling motor mounting plate; 1-1-15-Seedling driven synchronous pulley; 1-1-16-Seedling motor base; 1-1-5-1-Driven belt shaft; 1-1-5-2-Driven roller aluminum base; 1-1-5-3-Driven belt roller; 1-1-5-4 Conveyor belt; 1-1-5-5-Driven belt shaft aluminum base; 1-1- 5-6-Fourth aluminum profile; 1-1-5-7-Roller adjusting bolt; 1-2-1-Seedling pusher motor; 1-2-2-Gear transmission mechanism; 1-2-3-Crank slider seedling pusher mechanism; 1-2-4-Gear crank linkage shaft fixing ring; 1-2-5-Crank slider cone piercing seedling pusher mechanism base plate; 1-2-6-Seedling pusher motor seat; 1-2-7-Seedling pusher motor coupling; 1-2-2-1-First gear; 1-2-2-2-Second gear Gear; 1-2-2-3-Third gear; 1-2-2-4-Fourth gear; 1-2-2-5-Gear crank connecting shaft; 1-2-2-6-Flange bearing; 1-2-3-1-Push rod; 1-2-3-2-Conical spike; 1-2-3-3-Slide groove; 1-2-3-4-Connecting rod; 1-2-3-5-Crank; 1-2-2-5-Gear crank connecting shaft; 1-2-2-6-Cylindrical pin; 1-2-2-7-Pin;

[0034] 2-Circulating interval seedling feeding mechanism; 2-1-Chain conveyor mechanism; 2-2-Slide; 2-3-Funnel-shaped seedling cup; 2-4-Base plate of seedling feeding mechanism; 2-5-Drive sprocket shaft; 2-6-Tension wheel shaft; 2-7-Driven sprocket shaft; 2-8-Rhomboid bearing seat; 2-9-Driven bevel gear; 2-1-1-Tension wheel; 2-1-2-Chain link; 2-1-3-Drive sprocket; 2-1-4-Driven sprocket;

[0035] 3-Automatic transplanting and power linkage mechanism for duckbill-shaped plants; 3-1-Automatic transplanting mechanism for duckbill-shaped plants with multi-linkage linkage; 3-2-Power linkage mechanism; 3-3-Fifth aluminum profile; 3-4-Sixth aluminum profile; 3-5-Seventh aluminum profile; 3-6-Heightening pad; 3-7-Bottom frame plate; 3-8-Bottom frame side plate; 3-9-Fixing ring; 3-1-1-Driven shaft; 3-1-2-First support shaft; 3-1-3-Second support shaft; 3-1-4-First pin; 3-1-5-Flange bearing; 3-1-6-Snap ring; 3-1-7-Second pin; 3-1-8-Third pin; 3-1-9 - Brake bead; 3-1-10- Duckbill transplanting mechanism; 3-1-11- Duckbill connecting rod; 3-1-12- Rocker arm; 3-1-13- Rocker arm; 3-1-14- Connecting rod; 3-1-15- Cotter pin; 3-1-16- Crank; 3-1-17- Bearing seat; 3-1-19- Cam tie rod; 3-1-18- Cam; 3-1-10-1- Double-headed grooved pin; 3-1-10-2- Duckbill; 3-1-10-3- Tension spring; 3-1-10-4- Right duckbill; 3-1-10-5- Brake bead; 3-1-10-6- Funnel; 3-1-10-7- Snap ring;

[0036] 4-Trenching and covering mechanism; 4-1-Trencher lifting mechanism; 4-2-Covering device lifting mechanism; 4-3-Trenching plow blade; 4-4-Locking screw; 4-5-Positioning screw; 4-6-Trenching plow blade fixing frame; 4-7-Covering plate; 4-8-Covering wheel; 4-9-Covering frame; 4-10-Eighth aluminum profile; 4-11-Ninth aluminum profile; 4-12-Tenth aluminum profile; 4-13-Eleventh aluminum profile; 4-14-Twelfth aluminum profile ; 4-15-Thirteenth aluminum profile; 4-16-Fourteenth aluminum profile; 4-1-1-Screw support seat; 4-1-2-Forward and reverse thread screw; 4-1-3-Nut slider; 4-1-4-Handle; 4-1-5-Pull rod; 4-1-6-Hinge seat; 4-2-1-Hinge; 4-2-2-Electric push rod; 4-2-3-First electric push rod hinge seat; 4-2-4-Electric push rod fixing seat; 4-2-5-Second electric push rod hinge seat. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and should not be used to limit the scope of protection of the present invention.

[0038] Example 1

[0039] like Figure 1As shown, this invention discloses an automatic seedling transplanting machine, mainly comprising an automatic seedling tray feeding mechanism 1, a circulating interval seedling feeding mechanism 2, a multi-link duckbill automatic transplanting and power linkage mechanism 3, and a ditching and soil covering mechanism 4. The automatic seedling tray feeding mechanism 1 is mounted on top of the multi-link duckbill automatic transplanting and power linkage mechanism 3, and the circulating interval seedling feeding mechanism 2 is mounted below it. The circulating interval seedling feeding mechanism 2 is located above the multi-link duckbill automatic transplanting and power linkage mechanism 3. The ditching and soil covering mechanism 4 is located on both the front and rear sides of the multi-link duckbill automatic transplanting and power linkage mechanism 3. The multi-link duckbill automatic transplanting and power linkage mechanism 3 is located behind the circulating interval seedling feeding mechanism 2 and provides power to the circulating interval seedling feeding mechanism 2.

[0040] The main function of the automatic seedling tray delivery mechanism 1 is to directionally deliver seedlings from the trays and push them into the circulating interval seedling delivery mechanism 2. The main function of the circulating interval seedling delivery mechanism 2 is to catch the seedlings pushed out of the trays by the automatic seedling tray delivery mechanism 1 and transport them to the multi-link duckbill automatic transplanting and power linkage mechanism 3. The main function of the multi-link duckbill automatic transplanting and power linkage mechanism 3 is to catch the seedlings delivered by the circulating interval seedling delivery mechanism 2 and perform the transplanting operation, while simultaneously providing power to the circulating interval seedling delivery mechanism 2, enabling multiple mechanisms to share a single power source. The main function of the trenching and soil-covering mechanism 4 is to trench and hole, cover with soil, and compact the soil to maintain the upright position of the seedlings.

[0041] The working principle of this invention is as follows: the automatic seedling feeding mechanism 1 pushes the seedlings into the cyclic interval seedling feeding mechanism 2, the cyclic interval seedling feeding mechanism 2 sends the seedlings to the multi-link duckbill automatic transplanting and power linkage mechanism 3, the multi-link duckbill automatic transplanting and power linkage mechanism 3 sends the seedlings to the trenching and soil covering mechanism 4, and the trenching and soil covering mechanism 4 covers the soil after trenching and planting the seedlings.

[0042] This invention provides an automatic seedling transplanting machine. Seedlings are automatically fed through a seedling tray, a cyclical interval seedling feeding mechanism, a multi-link duckbill automatic transplanting and power linkage mechanism, and a ditching and soil covering mechanism to complete the seedling transplanting. This can improve the mechanization of scallion seedling transplanting, realize the automation of the entire process, and achieve high work efficiency.

[0043] Example 2

[0044] like Figure 1As shown, this invention discloses an automatic seedling transplanting machine, mainly comprising an automatic seedling tray feeding mechanism 1, a circulating interval seedling feeding mechanism 2, a multi-link duckbill automatic transplanting and power linkage mechanism 3, and a ditching and soil covering mechanism 4. The automatic seedling tray feeding mechanism 1 is mounted on the multi-link duckbill automatic transplanting and power linkage mechanism 3, and the circulating interval seedling feeding mechanism 2 is mounted on the multi-link duckbill automatic transplanting and power linkage mechanism 3. Ditching and soil covering mechanisms 4 are located on both the front and rear sides of the multi-link duckbill automatic transplanting and power linkage mechanism 3. The multi-link duckbill automatic transplanting and power linkage mechanism 3 is positioned behind the circulating interval seedling feeding mechanism 2 and provides power to the circulating interval seedling feeding mechanism 2.

[0045] The main function of the automatic seedling tray delivery mechanism 1 is to directionally deliver seedlings from the trays and push them into the circulating interval seedling delivery mechanism 2. The main function of the circulating interval seedling delivery mechanism 2 is to catch the seedlings pushed out of the trays by the automatic seedling tray delivery mechanism 1 and transport them to the multi-link duckbill automatic transplanting and power linkage mechanism 3. The main function of the multi-link duckbill automatic transplanting and power linkage mechanism 3 is to catch the seedlings delivered by the circulating interval seedling delivery mechanism 2 and perform the transplanting operation, while simultaneously providing power to the circulating interval seedling delivery mechanism 2, enabling multiple mechanisms to share a single power source. The main function of the trenching and soil-covering mechanism 4 is to trench and hole, cover with soil, and compact the soil to maintain the upright position of the seedlings.

[0046] like Figure 2 As shown, the automatic seedling feeding mechanism 1 for seedling trays mainly includes a conveyor belt seedling feeding mechanism 1-1 and a crank-slider type cone-shaped seedling pushing mechanism 1-2. Figure 3 , Figure 4 As shown, the conveyor belt seedling feeding mechanism 1-1 of an automatic scallion planting machine of the present invention mainly includes a seedling feeding motor 1-1-1, a seedling feeding motor coupling 1-1-2, a seedling feeding active synchronous wheel 1-1-3, a seedling feeding synchronous belt 1-1-4, a belt conveyor mechanism 1-1-5, a seedling tray linear track 1-1-6, a seedling tray bending track 1-1-7, a baffle 1-1-8, a grid 1-1-9, a track side plate 1-1-10, a first aluminum profile 1-1-11, a second aluminum profile 1-1-12, a third aluminum profile 1-1-13, a seedling feeding motor mounting plate 1-1-14, a seedling feeding driven synchronous wheel 1-1-15, and a seedling feeding motor base 1-1-16.

[0047] The seedling conveyor belt feeding mechanism 1-1 is fixedly connected to the bottom frame plate 3-7 via the first aluminum profile 1-1-11, the third aluminum profile 1-1-13, and angle brackets. The track side plate 1-1-10 is fixed to both sides of the seedling conveyor belt feeding mechanism 1-1 via angle brackets to the aluminum profiles 1-1-11 and 1-1-13. The second aluminum profile 1-1-12 is fixed to the aluminum profiles 1-1-11 and 1-1-13 via angle brackets and bolts. The seedling tray straight track 1-1-6 is fixedly installed on the aluminum profile 1-1-5-6 via bolts and leaves a gap with the track side plate 1-1-10 to form the seedling tray track. The seedling tray bending track 1-1-7 is fixedly connected to the track side plate 1-1-10 via bolts and leaves a certain gap with the seedling tray side plate 1-1-10 to form the seedling tray track. A baffle 1-1-8 is connected between the two seedling tray bending tracks 1-1-7. The motor mounting plate 1-1-14 is fixedly installed between the two seedling tray side plates 1-1-10 by angle brackets. The seedling feeding motor 1-1-1 is fixedly connected to the seedling feeding motor base 1-1-16 by bolts. The rotating shaft of the seedling feeding motor 1-1-1 extends from the reserved hole in the track side plate 1-1-10. The rotating shaft of the seedling feeding motor 1-1-1 is fixedly installed with the seedling feeding motor coupling 1-1-2 and the optical shaft by set screws. The optical shaft is fixedly connected to the seedling feeding active synchronous pulley 1-1-3 by set screws and keyways. The seedling feeding synchronous belt 1-1-4 is meshed on the seedling feeding active synchronous pulley 1-1-3 and the seedling feeding driven synchronous pulley 1-1-15. The seedling feeding driven synchronous pulley 1-1-15 is fixedly connected to the active belt shaft 1-1-5-1 of the belt conveyor mechanism 1-1-5 by keyways and set screws.

[0048] like Figure 5As shown, the belt conveyor mechanism 1-1-5 of the automatic seedling transplanting machine of the present invention mainly includes an active belt shaft 1-1-5-1, a driven roller aluminum seat 1-1-5-2, a driven belt roller 1-1-5-3, a conveyor belt 1-1-5-4, an active belt shaft aluminum seat 1-1-5-5, a fourth aluminum profile 1-1-5-6, a roller adjusting bolt 1-1-5-7, and a grid 1-1-9. The active belt shaft aluminum seat 1-1-5-5 and the driven roller aluminum seat 1-1-5-2 on both sides of the belt conveyor mechanism 1-1-5 are fixed to the fourth aluminum profile 1-1-5-6 by bolts. The fourth aluminum profile 1-1-5-6 is fixed to the first aluminum profile 1-1-11 and the third aluminum profile 1-1-13 by angle bracket bolts. This makes the aluminum profile 1-1-5-6, the active belt shaft aluminum seat 1-1-5-5, and the driven roller aluminum seat 1-1-5-2 of the belt conveyor mechanism fit and fix to the track side plate 1-1-10, thereby fixing the conveyor belt 1-1-5-4, the active belt shaft 1-1-5-1, and the driven belt roller 1-1-5-3 in the middle of the track side plate 1-1-10 of the seedling delivery mechanism 1-1. The two ends of the drive belt shaft 1-1-5-1 pass through the reserved holes in the track side plate 1-1-10 and the bearing inner ring of the drive belt shaft aluminum seat 1-1-5-5, thus fixing the drive belt shaft 1-1-5-1 and ensuring smooth rotation. The two ends of the driven belt roller 1-1-5-3 pass through the reserved holes in the track side plate 1-1-10 and extend into the grooves in the driven roller aluminum seat 1-1-5-2. The roller adjusting bolt 1-1-5-7 passes through the threaded hole at the top of the driven roller aluminum seat 1-1-5-2 and the driven belt roller 1-1. -5-3 After the through holes at both ends, the position of the driven belt roller 1-1-5-3 is fixed and adjusted, thereby adjusting the tension of the conveyor belt 1-1-5-4. The driving belt shaft 1-1-5-1 and the driven belt roller 1-1-5-3 pass through the conveyor belt 1-1-5-4. The conveyor belt 1-1-5-4 is tightened by adjusting the roller adjusting bolt 1-1-5-7. The grid 1-1-9 designed according to the bottom of the seedling tray is fixed on the conveyor belt 1-1-5-4. The grid 1-1-9 is placed flush with the belt.

[0049] The working process of the conveyor belt seedling feeding mechanism 1-1 is as follows: The seedling tray is placed on the belt conveyor mechanism 1-1-5. The conveyor belt 1-1-5-4 and the grid 1-1-9 push the seedling tray into the seedling tray straight track 1-1-6 and the seedling tray bending track 1-1-7, and then it runs along the predetermined route. When it is pushed to the seedling pushing position of the crank slider type cone piercing seedling pushing mechanism 1-2, it stops and waits for the crank slider type cone piercing seedling pushing mechanism 1-2 to push out four seedlings before the belt conveyor mechanism 1-1-5 runs again, and so on.

[0050] like Figure 6As shown, the crank-slider type cone-shaped seedling pushing mechanism 1-2 mainly includes a seedling pushing motor 1-2-1, a gear transmission mechanism 1-2-2, a crank-slider seedling pushing mechanism 1-2-3, a gear-crank linkage shaft fixing ring 1-2-4, a crank-slider cone-shaped seedling pushing mechanism base plate 1-2-5, a seedling pushing motor seat 1-2-6, and a seedling pushing motor coupling 1-2-7.

[0051] The crank-slider type cone-shaped seedling pushing mechanism 1-2 has a base plate 1-2-5 that is fixedly installed between the two side rail plates 1-1-10 using angle bracket bolts. The seedling pushing motor 1-2-1 and the seedling pushing motor seat 1-2-6 are fixedly connected by bolts. The seedling pushing motor seat 1-2-6 is fixedly connected to the side rail plate 1-1-10 using bolts. The shaft of the seedling pushing motor 1-2-1 and the gear-crank connecting shaft 1-2-2-5 are fixed with set screws through the seedling pushing motor coupling 1-2-7. The gear-crank connecting shaft fixing ring 1-2-4 is placed concentrically above the flange bearing 1-2-2-6 and is aligned with the gear-crank connecting shaft 1-2-2-5. The flange bearing 1-2-2-6 is fixed with a set screw. The pre-drilled hole on the bottom plate 1-2-5 of the crank-slider cone piercing mechanism is used to fix, position and enable the smooth rotation of the gear-crank connecting shaft 1-2-2-5. The crank-slider mechanism 1-2-3 is installed above the gear-crank connecting shaft fixing ring 1-2-4. The gear-crank connecting shaft 1-2-2-5 passes through the crank 1-2-3-5 and is fixed with a keyway and set screw. The seedling pusher motor 1-2-1 is fixed and drives the gear-crank connecting shaft 1-2-2-5 through the seedling pusher motor coupling 1-2-7, thereby driving the gear transmission mechanism 1-2-2 and the crank-slider seedling pusher mechanism 1-2-3.

[0052] like Figure 7 As shown, the gear transmission mechanism 1-2-2 of the automatic seedling transplanting machine of the present invention mainly includes a first gear 1-2-2-1, a second gear 1-2-2-2, a third gear 1-2-2-3, a fourth gear 1-2-2-4, four gear crank connecting shafts 1-2-2-5, four flange bearings 1-2-2-6, and a base plate 1-2-5 for the crank slider cone piercing seedling pushing mechanism.

[0053] In the gear transmission mechanism 1-2-2, gears 1-2-2-1, 1-2-2-2, 1-2-2-3, and 1-2-2-4 are fixed to the gear crank connecting shaft 1-2-2-5 via set screws and mesh with each other. They are also fixed to the base plate 1-2-5 of the crank-slider type cone-shaped seedling pushing mechanism. The gear crank connecting shaft 1-2-2-5, which is fixed to gear 1-2-2-1 via set screws, is connected to the seedling pushing motor 1-2-1 via the seedling pushing motor coupling 1-2-7. The seedling pusher motor 1-2-1 drives the gear crank connecting shaft 1-2-2-5, which in turn drives the gear 1-2-2-1 to rotate, thereby driving the gear transmission mechanism 1-2-2 to operate. Each gear crank connecting shaft 1-2-2-5 passes through the flange bearing 1-2-2-6 and its other end is connected to the gear crank connecting shaft fixing ring 1-2-4 and the crank 1-2-3-5. Thus, the operation of the gear transmission mechanism 1-2-2 drives the crank slider seedling pusher mechanism 1-2-3 to operate.

[0054] like Figure 8 As shown, the crank-slider pushing mechanism 1-2-3 of an automatic seedling transplanting machine of the present invention mainly includes a push rod 1-2-3-1, a cone 1-2-3-2, a sliding groove 1-2-3-3, a connecting rod 1-2-3-4, a crank 1-2-3-5, a gear-crank connecting shaft 1-2-2-5, a cylindrical pin 1-2-2-6, and a pin 1-2-2-7.

[0055] The slide groove 1-2-3-3 in the crank-slider seedling pushing mechanism 1-2-3 is fixed to the base plate 1-2-5 of the crank-slider type cone-shaped seedling pushing mechanism by bolts. The cone 1-2-3-5 is fixed to the head of the push rod 1-2-3-1 by the threaded hole inside the push rod 1-2-3-1. The push rod 1-2-3-1 is fixed inside the slide groove 1-2-3-3 by the linear bearing inside the slide groove 1-2-3-3. The connecting rod 1-2-3-4 is fixed above the push rod 1-2-3-1 and the crank 1-2-3-5 by the cylindrical pin 1-2-3-6 and the pin 1-2-3-7. The crank 1-2-3-5 is fixed to the gear crank linkage shaft 1-2-2-5 by the keyway and the set screw.

[0056] The working process of the crank-slider type cone-shaped seedling pushing mechanism 1-2 is as follows: When the seedling tray is pushed by the seedling feeding mechanism 1-1 and reaches the working area of ​​the crank-slider type cone-shaped seedling pushing mechanism 1-2 along the route limited by the seedling tray straight track and the seedling tray bending track, the seedling feeding mechanism 1-1 stops. Under the drive of the seedling pushing motor 1-2-1, the gear transmission mechanism 1-2-2 drives the push rod 1-2-3-1 and the cone head 1-2-3-2 of the crank-slider type seedling pushing mechanism 1-2-3 to push out sequentially along the inner hole route of the groove 1-2-3-3. The cone head 1-2-3-2 contacts the bottom of the seedling tray in sequence, flattening the seedling tray and pushing out the seedlings. The first and third rows of seedlings are pushed out first, followed by the second and fourth rows of seedlings. The seedlings are pushed out in pairs and fall into the circulating interval seedling feeding mechanism 2. This cycle repeats.

[0057] like Figure 9 and Figure 10 As shown, the circulating intermittent seedling feeding mechanism 2 mainly includes a chain conveyor mechanism 2-1, a slide 2-2, a funnel-shaped seedling cup 2-3, a seedling feeding mechanism base plate 2-4, a drive sprocket shaft 2-5, a tension wheel shaft 2-6, a driven sprocket shaft 2-7, a rhomboid bearing seat 2-8, and a driven bevel gear 2-9.

[0058] The base plate 2-4 of the cyclic interval seedling feeding mechanism 2 is bolted to the aluminum profile 1-1-12. The slide 2-2 is threaded at its lower end into the pre-drilled threaded hole in the base plate 2-4. The rhomboid bearing seat 2-8 is bolted to the base plate 2-4 through the pre-drilled hole. The drive sprocket shaft 2-5 passes through the pre-drilled hole in the base plate 2-4 and the inner hole of the rhomboid bearing seat 2-8, and is secured by the set screw on the rhomboid bearing seat 2-8. The tensioning wheel shaft 2-6 passes through the inner hole of the rhomboid bearing seat 2-8 and is fixed to the base plate 2-4. The driving sprocket shaft 2-7 passes through the inner hole of the diamond-shaped bearing seat 2-8 and is fixed on the base plate 2-4 of the seedling feeding mechanism. The driven bevel gear 2-9 is fixed to the lower section of the driving sprocket shaft 2-5 by a set screw. The funnel-shaped seedling cup 2-3 is fixed to the chain link 2-1-2 of the chain transmission mechanism 2-1 by bolts, with each funnel-shaped seedling cup 2-3 separated by one chain link 2-1-2. The driving sprocket 2-1-3 is fixed to the driving sprocket shaft 2-5 by a set screw and a keyway. The driven sprocket 2-1-4 is fixed to the driven sprocket shaft 2-7 by a set screw and a keyway. The tension wheel 2-1-1 is fixed to the tension wheel shaft 2-6 by a set screw and a keyway.

[0059] The working process of the cyclical intermittent seedling feeding mechanism 2 is as follows: After the crank-slider type cone-shaped seedling pushing mechanism 1-2 pushes out the seedlings, the funnel-shaped seedling transport cup 2-3 arrives at the seedling landing point under the drive of the chain conveyor mechanism 2-1. First, the first row of seedlings in the seedling tray falls into the third row of seedlings. The first row of seedlings falls directly into the funnel-shaped seedling transport cup 2-3. The third row of seedlings falls onto the slide 2-2 and then falls into the funnel-shaped seedling transport cup 2-3. Then, the second row of seedlings in the seedling tray is pushed out and falls into the fourth row of seedling cups. The second row of seedlings first falls onto the slide and then falls into the funnel-shaped seedling transport cup 2-3. The fourth row of seedlings falls directly into the funnel-shaped seedling transport cup 2-3. Then, the funnel-shaped seedling transport cup is driven by the chain conveyor mechanism to transport the seedlings to the multi-link duckbill automatic transplanting and power linkage mechanism 3. This cycle repeats.

[0060] like Figure 11 As shown, the chain transmission mechanism 2-1 includes a tensioning wheel 2-1-1, a chain link 2-1-2, a driving sprocket 2-1-3, and a driven sprocket 2-1-4. The chain link 2-1-2 in the chain transmission mechanism 2-1 meshes with the driving sprocket 2-1-3, the driven sprocket 2-1-4, and the tensioning wheel 2-1-1. The driving sprocket 2-1-3 is fixed to the driving sprocket shaft 2-5 by a set screw and a keyway. The driven sprocket 2-1-4 is fixed to the driven sprocket shaft 2-7 by a set screw and a keyway. The tensioning wheel 2-1-1 is fixed to the tensioning wheel shaft 2-6 by a set screw and a keyway.

[0061] The working process of the chain transmission mechanism 2-1 is as follows: The driven bevel gear 2-9 drives the driving sprocket shaft 2-5 and the driving sprocket 2-1-3 to rotate. With the calculation and coordination of the reduction ratio of the driven bevel gear and the number of teeth and chain links of the driving sprocket, the chain transmission mechanism ensures that when a funnel-shaped seedling cup catches the seedling at the seedling landing point, a funnel-shaped seedling cup 2-3 just transports the seedling to the top of the funnel, and the duckbill transplanting mechanism 3-1-10 just moves to the highest point. This cycle repeats.

[0062] like Figure 12 As shown, the multi-link automatic duckbill transplanting and power linkage mechanism 3 includes a multi-link automatic duckbill transplanting mechanism 3-1, a power linkage mechanism 3-2, a fifth aluminum profile 3-3, a sixth aluminum profile 3-4, a seventh aluminum profile 3-5, a heightening pad 3-6, a bottom frame plate 3-7, a bottom frame side plate 3-8, and a fixing ring 3-9. The bottom frame side plate 3-8 is symmetrically fixed to both sides of the bottom frame plate 3-7 by brackets and bolts. The multi-link automatic duckbill transplanting mechanism 3-1 passes through the bottom frame side plate 3-8 and is symmetrically fixed to both sides of the bottom frame plate 3-7 by the fixing ring 3-8. The power linkage mechanism 3-2 is installed above the bottom frame plate 3-7.

[0063] like Figure 13As shown, the multi-link duckbill automatic transplanting mechanism 3-1 includes a driven shaft 3-1-1, a support shaft 3-1-2, a support shaft 3-1-3, a pin 3-1-4, a flange bearing 3-1-5, a retaining ring 3-1-6, a pin 3-1-7, a pin 3-1-8, a brake bead 3-1-9, a duckbill transplanting mechanism 3-1-10, a duckbill connecting rod 3-1-11, a rocker arm 3-1-12, a rocker arm 3-1-13, a connecting rod 3-1-14, a cotter pin 3-1-15, a crank 3-1-16, a bearing seat 3-1-17, a cam pull rod 3-1-19, a cam 3-1-18, aluminum profiles 3-3, 3-4, and 3-5, and a brake cable (not shown).

[0064] In the multi-link duckbill automatic transplanting mechanism 3-1, two bearing seats 3-1-17 are fixed to the aluminum profile 3-3 with bolts. The driven shaft 3-1-1 passes through the two bearing seats 3-1-17 and is fixed with grommets. The support shafts 3-1-2 and 3-1-3 pass through the bottom frame side plate 3-8 and are fixed with retaining rings 3-9. The crank 3-1-16 is fixed to both sides of the driven shaft 3-1-1 with grommets. Flange bearings 3-1-5 are installed at the bottom of the rocker arms 3-1-12 and 3-1-13, and the inner ring of the flange bearing is inserted into both sides of the support shaft 3-1-3. Snap rings are installed on the outer side. 3-1-6, connecting rod 3-1-14 is hinged to crank 3-1-16 via pins 3-1-4 and 3-1-7, duckbill connecting rod 3-1-11 is hinged to rocker 3-1-12 and rocker 3-1-13 via pins 3-1-7 and 3-1-8, cotter pins 3-1-15 are inserted into the outside of the pins, cam rod 3-1-19 is mounted on aluminum profile 3-3 via shoulder bolts, cam 3-1-18 is fixed to driven shaft 3-1-1, one end of brake cable is fixed to cam rod 3-1-19 and the other end passes through a duckbill and is fixed to brake bead 3-1-9.

[0065] The working process of the multi-link duckbill automatic transplanting mechanism 3-1 is as follows: the driven shaft 3-1-1 rotates, driving the crank 3-1-16 to rotate. The crank rotates, thereby driving the connecting rod 3-1-14. While the connecting rod 3-1-14 is driven, it provides power to the parallelogram linkage mechanism below. The rocker arm 3-1-12 and rocker arm 3-1-13 swing accordingly. The duckbill connecting rod 3-1-11 moves horizontally. The duckbill transplanting mechanism 3-1-10 moves vertically backward and downward. At the same time, the cam 3-1-18 rotates with the driven shaft 3-1-1 and pushes up the upper cam pull rod 3-1-19. At the same time, the brake cable is pulled up by the cam pull rod 3-1-19 and pulls open the right duckbill 3-1-10-4.

[0066] like Figure 14As shown, the duckbill transplanting mechanism 3-1-10 of an automatic seedling transplanting machine of the present invention includes a double-headed grooved pin 3-1-10-1, a left duckbill 3-1-10-2, a tension spring 3-1-10-3, a right duckbill 3-1-10-4, a brake bead 3-1-10-5, a funnel 3-1-10-6, and a retaining spring 3-1-10-7. In the duckbill transplanting mechanism 3-1-10, the funnel 3-1-10-6 is inserted into the circular hole at the front end of the duckbill connecting rod 3-1-11. The left duckbill 3-1-10-2 and the right duckbill 3-1-10-4 are installed at the front end of the duckbill connecting rod 3-1-10 via a double-headed grooved pin 3-1-10-1. The double-headed grooved pin 3-1-10-1 is fixed on both sides by snap rings 3-1-10-7. The left duckbill 3-1-10-2 is fixed to prevent it from rotating. The tension spring 3-1-10-3 hooks the left duckbill 3-1-10-2 and the right duckbill 3-1-10-4 on both sides. The brake bead 3-1-10-5 is fixed to the right duckbill 3-1-10-4 by a nut. The brake cable passes through the left duckbill 3-1-10-2 and is fixed to the brake bead 3-1-10-5.

[0067] The working process of the duckbill transplanting mechanism 3-1-10 is as follows: the right duckbill 3-1-10-4 is pulled open by the brake line, the right duckbill 3-1-10-4 pushes the soil and the seedling falls down, and at the same time the tension spring 3-1-10-3 pulls the right duckbill 3-1-10-4 back to close the duckbill.

[0068] like Figure 15 As shown, the power linkage mechanism 3-2 includes a drive shaft 3-2-1, a KP08 bearing housing 3-2-2, a 1-synchronous pulley 3-2-3, a long synchronous belt 3-2-4, a 2-synchronous pulley 3-2-5, a short synchronous belt 3-2-6, a 3-synchronous pulley 3-2-7, a 4-synchronous pulley 3-2-8, a coupling 3-2-9, a transfer motor 3-2-10, a bevel gear 3-2-11, a bevel gear driven shaft 3-2-12, a heightening pad 3-6, a driven bevel gear 2-9, and a drive sprocket shaft 2-5.

[0069] In the power linkage mechanism 3-2, three KP08 bearing seats 3-2-2 are fixed to the raising pad 3-6 with bolts. The transplanting motor 3-2-10 is fixed to the aluminum profile 3-4 via a motor mount. The coupling 3-2-9 coaxially fixes the drive shaft 3-2-1 and the transplanting motor 3-2-10. The other end of the drive shaft 3-2-1 passes through the KP08 bearing seats 3-2-2 and is fixed with a set screw. Two synchronous pulleys 3-2-5 and four synchronous pulleys 3-2-8 are installed on the drive shaft 3-2-1 and fixed with set screws inside the pulleys. Stepping wheel 3-2-7 is fixed on driven shaft 3-1-1. Bevel gear driven shaft 3-2-12 passes through two KP08 bearing seats 3-2-2 and is fixed with set screws. Synchronous pulley 3-2-3 is fixed in the middle. Long synchronous belt 3-2-4 is tightly fitted on synchronous pulley 3-2-3 and synchronous pulley 3-2-5. Short synchronous belt 3-2-6 is tightly fitted on synchronous pulley 3-2-7 and synchronous pulley 3-2-8. Bevel gear 3-2-11 is fixed at both ends of bevel gear driven shaft 3-2-12 and meshes with driven bevel gear 2-9.

[0070] The working process of the power linkage mechanism 3-2 is as follows: The transplanting motor 3-2-10 drives the drive shaft 3-2-1 to rotate through the coupling 3-2-9. At the same time, the two synchronous pulleys 3-2-5 and the four synchronous pulleys 3-2-8 rotate, driving the long synchronous belt 3-2-4 and the short synchronous belt 3-2-6 for transmission. In conjunction with one synchronous pulley 3-2-3 and three synchronous pulleys 3-2-7, the driven shaft 3-1-1 and the bevel gear driven shaft 3-2-12 rotate. The bevel gear 3-2-11 rotates with the bevel gear driven shaft 3-2-12, thereby transmitting power to the meshing driven bevel gear 2-9. The rotation of the driven bevel gear 2-9 simultaneously drives the drive sprocket shaft 2-5 to rotate.

[0071] like Figure 16 As shown, the trenching and covering mechanism 4 includes a trencher lifting mechanism 4-1, a covering mechanism 4-2, a trenching plow blade 4-3, a locking screw 4-4, a positioning screw 4-5, a trenching plow blade fixing frame 4-6, a covering plate 4-7, a covering wheel 4-8, a covering frame body 4-9, an eighth aluminum profile 4-10, a ninth aluminum profile 4-11, a tenth aluminum profile 4-12, an eleventh aluminum profile 4-13, a twelfth aluminum profile 4-14, a thirteenth aluminum profile 4-15, and a fourteenth aluminum profile 4-16.

[0072] The two lead screw support seats 4-1-1 of the trencher lifting mechanism 4-1 are fixed to the bottom frame plate 3-7 by bolts. The hinge seat 4-1-6 of the trencher lifting mechanism 4-1 is fixed to the aluminum profile 4-12 by boat nuts and bolts. The aluminum profile 4-15 is fixed to the aluminum profile 4-12 by angle brackets and bolts. The trenching plow blade fixing bracket 4-6 is fixed to the aluminum profile 4-15 by boat nuts and bolts. The positioning screw 4-5 is connected to the trenching plow blade fixing bracket 4-6 through the holes left on the trenching plow blade fixing bracket 4-6. The trenching plow blade 4-3 is fixed to the aluminum profile 4-15 by set screw 4-6 and boat nuts and is installed below the positioning screw 4-5. The fixing position is adjusted by the positioning screw 4-5. The aluminum profile 4-14 is fixed to the bottom frame plate 3-7 by bolts. Aluminum profile 4-13 is connected to the eleventh aluminum profile 4-13 via hinge 4-2-1 of the soil covering mechanism 4-2, as well as boat-shaped nuts and bolts. The soil covering mechanism 4-2 can rotate and open via hinge 4-2-1. The electric push rod fixing seat 4-2-4 of the soil covering mechanism 4-2 is fixed to the side of the bottom frame side plate 3-8 via bolts. The eighth aluminum profile 4-10 and the ninth aluminum profile 4-11 are fixed to the eleventh aluminum profile 4-13 via bolts and angle brackets. Aluminum profile 4-16 is fixed to the eighth aluminum profile 4-10 and the ninth aluminum profile 4-11 via angle brackets and bolts. The soil covering frame 4-9 is fixed to the aluminum profile 4-16 via bolts and boat-shaped nuts. The soil covering plate 4-7 is fixed to the soil covering frame 4-9 via bolts. The soil covering wheel 4-8 is installed on both sides of the bottom of the soil covering frame 4-9 via positioning bolts.

[0073] like Figure 17 As shown, the trenching and covering mechanism 4's trencher lifting mechanism 4-1 includes a screw support seat 4-1-1, a positive and negative thread screw 4-1-2, a nut slider 4-1-3, a handle 4-1-4, a pull rod 4-1-5, and a hinge seat 4-1-6.

[0074] The trencher lifting mechanism 4-1 has two lead screw support seats 4-1-1 fixed to the bottom frame plate 3-7 by bolt connection. The hinge seat 4-1-6 of the trencher lifting mechanism 4-1 is fixed to the aluminum profile 4-12 by boat-shaped nuts and bolts, and the hinge seat 4-1-6 is immovable. The two ends of the positive and negative thread lead screws 4-1-2 are installed on the bearing inner holes of the two lead screw support seats 4-1-1. The nut slider 4-1-3 is installed on the threads of the positive and negative thread lead screws 4-1-2 with different directions of rotation. The two nut sliders 4-1-3 are symmetrically installed at the joint of the positive and negative threads. The pull rod 4-1-5 is installed on the nut slider 4-1-3 and the hinge seat 4-1-1 by positioning bolts. The handle 4-1-4 is installed on one end of the positive and negative threaded screw 4-1-2 and is fixed by the threaded connection between the inner thread of the handle 4-1-4 and one end of the positive and negative threaded screw 4-1-2. By cranking the handle 4-1-4, the positive and negative threaded screw 4-1-2 is rotated, and the nut slider 4-1-3 moves to both sides, which pulls the hinge seat 4-1-6 upward through the pull rod 4-1-5.

[0075] like Figure 18 As shown, the soil covering device lifting mechanism 4-2 includes a hinge 4-2-1, an electric push rod 4-2-2, a first electric push rod hinge seat 4-2-3, an electric push rod fixing seat 4-2-4, and a second electric push rod hinge seat 4-2-5. Aluminum profile 4-13 is connected to the soil cover lifting mechanism 4-2 via hinge 4-2-1, boat-shaped nuts, and bolts. The soil cover lifting mechanism 4-2 can rotate and open / close via hinge 4-2-1. The electric push rod fixing seat 4-2-4 of the soil cover lifting mechanism 4-2 is fixed to the side of the bottom frame side plate 3-8 via bolts. The electric push rod hinge seat 4-2-3 is fixed to the electric push rod fixing seat 4-2-4 via bolts. The electric push rod hinge seat 4-2-5 is fixed to the aluminum profile 4-13 via boat-shaped nuts and bolts. The electric push rod 4-2-2 is fixed to the first electric push rod hinge seat 4-2-3 and the second electric push rod hinge seat 4-2-5 via positioning bolts and positioning holes at both ends of the electric push rod 4-2-2.

[0076] The overall working process of the automatic seedling transplanting machine of the present invention is as follows: First, the furrow opener lifting mechanism 4-1 lowers the furrow opener blade 4-3 to a certain furrowing depth to open furrows and form holes. The automatic seedling feeding mechanism 1 of the seedling tray consists of two parts: the conveyor belt feeding mechanism 1-1 and the crank-slider type cone-shaped seedling pushing mechanism 1-2. The conveyor belt transports the seedling trays 1-1-5-4, and the straight track 1-1-6 and the curved track 1-1-7 of the seedling tray restrict the route of the seedling tray transport. Then, the crank-slider type cone-shaped seedling pushing mechanism 1-2 pushes the seedlings to detach the larger seedlings from the seedling tray. The seedling feeding motor 1-1-1 drives the active belt shaft 1-1-5-1 through the seedling feeding synchronous wheel 1-1-3 and the seedling feeding synchronous belt 1-1-4, which in turn drives the conveyor belt 1-1-5-4. The grid 1-1-9 on the conveyor belt 1-1-5-4 is engaged with the seedling tray to prevent the seedling tray from slipping. The conveyor belt 1-1-5-4 conveys the seedling tray to the entrance of the seedling tray linear track 1-1-6. The funnel-shaped entrance formed by the intersection of the side plate 1-1-10 of the seedling feeding mechanism and the seedling tray linear track 1-1-6 can ensure that the edge of the seedling tray is accurately engaged in the track. Then, with the push of the conveyor belt 1-1-5-4 and the grid 1-1-9, the seedling tray moves along the predetermined route to the action point of the crank-slider type cone-shaped seedling pushing mechanism 1-2. The seedling pusher motor 1-2-1 drives the gear set 1-2-2, with the gears meshing with each other. The first gear 1-2-2-1 and the third gear 1-2-2-3 rotate forward; the second gear 1-2-2-2 and the fourth gear 1-2-2-4 rotate in reverse. This causes the cranks 1-2-3-5 in the corresponding crank-slider mechanism 1-2-3 to rotate in opposite directions. The push rod 1-2-3-1 advances along the slide groove 1-2-3-3, pushing the seedling tray into place and causing the seedlings to detach from the tray and fall into the funnel-shaped seedling cup 2-3 of the cyclical intermittent seedling feeding mechanism 2. The cyclical intermittent seedling feeding mechanism 2... Powered by the transplanting motor 3-2-10, when the funnel-shaped seedling cup 2-3 moves to the preset seedling drop position via the chain conveyor mechanism 2-1, the second gear 1-2-2-2 and the fourth gear 1-2-2-4 in the second gear set 1-2-2 of the crank-slider type cone-shaped seedling pushing mechanism 1-2 push the push rod 1-2-3-1 in the crank-slider mechanism 1-2-3 directly pushes the seedling into the funnel-shaped seedling cup 2-3, or the first gear 1-2-2-1 and the third gear 1-2-2-3 push the push rod to push the seedling into the slide 2-2, from which it falls into the funnel-shaped seedling cup 2-3. The chain conveyor mechanism 2-1 conveys the funnel-shaped seedling cup 2-3, and the seedling falls into the cup. It is then conveyed to the upper funnel 3-1-10-6 of the multi-link duckbill automatic transplanting mechanism 3-1, where the seedling falls into the funnel 3-1-10-6. The multi-link duckbill automatic transplanting mechanism 3.1 then plants the seedling into the soil. Finally, the electric push rod 4-2-2 in the soil covering device lifting mechanism 4-2 works to lower the soil covering plate 4-7 and the soil covering wheel 4-8 to cover the seedling with soil.

[0077] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An automatic seedling transplanting machine, characterized in that: The system includes a multi-link automatic transplanting and power linkage mechanism (3), on which an automatic seedling tray feeding mechanism (1) is installed. Below the automatic seedling tray feeding mechanism (1) is a circulating interval seedling feeding mechanism (2), located above the multi-link automatic transplanting and power linkage mechanism (3). Ditching and soil covering mechanisms (4) are installed on both the front and rear sides of the multi-link automatic transplanting and power linkage mechanism (3). The power linkage mechanism (3) is located behind the circulating interval seedling feeding mechanism (2) and provides power to the circulating interval seedling feeding mechanism (2). The seedling tray automatic seedling feeding mechanism (1) pushes the seedlings into the circulating interval seedling feeding mechanism (2). The circulating interval seedling feeding mechanism (2) sends the seedlings to the multi-link duckbill automatic transplanting and power linkage mechanism (3). The multi-link duckbill automatic transplanting and power linkage mechanism (3) sends the seedlings to the trenching and soil covering mechanism (4). The trenching and soil covering mechanism (4) trenches and plants the seedlings and then covers them with soil.

2. The automatic seedling transplanting machine according to claim 1, characterized in that: The automatic seedling feeding mechanism (1) includes a conveyor belt feeding mechanism (1-1) and a crank-slider type cone-shaped seedling pushing mechanism (1-2). The conveyor belt feeding mechanism (1-1) includes a track side plate (1-1-10) arranged opposite to each other. The track side plate (1-1-10) is connected to the bottom frame plate (3-7) of the multi-link duckbill automatic transplanting and power linkage mechanism (3) through a first aluminum profile (1-1-11) and a third aluminum profile (1-1-13). The first aluminum profile (1-1-11) and the third aluminum profile (1-1-13) are connected to the track side plate (1-1-10), and the first aluminum profile (1-1-11) and the third aluminum profile (1-1-13) are connected to the bottom frame plate (3-7). -7) are fixedly connected. A motor mounting plate (1-1-14) is installed between the side plates (1-1-10) of the seedling tray. A seedling feeding motor seat (1-1-16) is installed on the motor mounting plate (1-1-14). The rotating shaft of the seedling feeding motor (1-1-1) extends from the reserved hole in the side plate (1-1-10). The rotating shaft of the seedling feeding motor (1-1-1) is connected to the optical shaft through the seedling feeding motor coupling (1-1-2). The optical shaft is connected to the seedling feeding active synchronous pulley (1-1-3). The seedling feeding synchronous belt (1-1-4) is meshed on the seedling feeding active synchronous pulley (1-1-3) and the seedling feeding driven synchronous belt (1-1-15). The seedling feeding driven synchronous belt (1-1-4) is connected to the belt conveyor mechanism (1- The belt conveyor mechanism (1-1-5) is connected to the drive belt shaft (1-1-5-1) of 1-5. The belt conveyor mechanism (1-1-5) includes a fourth aluminum profile (1-1-5-6) arranged opposite to each other. A drive belt shaft aluminum seat (1-1-5-5) and a driven roller aluminum seat (1-1-5-2) are respectively provided at both ends of the fourth aluminum profile (1-1-5-6). The fourth aluminum profile (1-1-5-6) is fixed on the first aluminum profile (1-1-11) and the third aluminum profile (1-1-13). The aluminum profile (1-1-5-6), the drive belt shaft aluminum seat (1-1-5-5), and the driven roller aluminum seat (1-1-5-2) are fitted and fixed to the track side plate (1-1-10). The drive belt shaft (1-1-5-1) has two... The end of the driven belt roller (1-1-5-3) passes through the reserved hole in the track side plate (1-1-10) and the bearing inner ring of the drive belt shaft aluminum seat (1-1-5-5). The two ends of the driven belt roller (1-1-5-3) pass through the reserved hole in the track side plate (1-1-10) and extend into the slot in the driven roller aluminum seat (1-1-5-2). The roller adjusting bolt (1-1-5-7) passes through the threaded hole at the top of the driven roller aluminum seat (1-1-5-2) and the through holes at both ends of the driven belt roller (1-1-5-3) and is fixed to adjust the position of the driven belt roller (1-1-5-3). The drive belt shaft (1-1-5-1) and the driven belt roller (1-1-5-3) pass through the conveyor belt (1-1-5-4).A grid (1-1-9) is fixed on the conveyor belt (1-1-5-4), and the grid (1-1-9) is positioned flush with the conveyor belt (1-1-5-4). A seedling tray bending track (1-1-7) is connected to the side of the track side plate (1-1-10), with a certain gap between the seedling tray bending track (1-1-7) and the track side plate (1-1-10) to form the seedling tray track. A seedling tray straight track (1-1-6) is installed on the aluminum profile (1-1-5-6), with a gap between the seedling tray straight track (1-1-6) and the track side plate (1-1-10) to form the seedling tray track. A baffle (1-1-8) connects two of the seedling tray bending tracks (1-1-7).

3. The automatic seedling transplanting machine according to claim 2, characterized in that: The crank-slider type cone-shaped seedling pushing mechanism (1-2) includes a crank-slider cone-shaped seedling pushing mechanism base plate (1-2-5). The crank-slider cone-shaped seedling pushing mechanism base plate (1-2-5) is installed between the two side rail plates (1-1-10). A seedling pushing motor seat (1-2-6) is installed on the side rail plate (1-1-10). A seedling pushing motor (1-2-1) is installed on the seedling pushing motor seat (1-2-6). A gear transmission mechanism (1-2-2), a crank-slider seedling pushing mechanism (1-2-3), and a gear-crank linkage shaft fixing ring (1-2-4) are installed on the crank-slider cone-shaped seedling pushing mechanism base plate (1-2-5). The crank-slider seedling pushing mechanism (1-2-3) is installed... The gear crank-connecting shaft fixing ring (1-2-4) is mounted above the gear crank-connecting shaft fixing ring (1-2-4) for fixing the gear transmission mechanism (1-2-2). The seedling pushing motor (1-2-1) drives the crank slider seedling pushing mechanism (1-2-3) through the gear transmission mechanism (1-2-2). The gear transmission mechanism (1-2-2) includes four flange bearings (1-2-2-6) installed in the base plate (1-2-5) of the crank slider type cone-shaped seedling pushing mechanism. Each flange bearing (1-2-2-6) is equipped with a gear crank-connecting shaft (1-2-2-5). The four gear crank-connecting shafts (1-2-2-5) are respectively arranged in the flange bearings (1-2-2-6). The first gear (1-2-2-1), the second gear (1-2-2-2), the third gear (1-2-2-3), and the fourth gear (1-2-2-4) are respectively installed on the plate. The first gear (1-2-2-1), the second gear (1-2-2-2), the third gear (1-2-2-3), and the fourth gear (1-2-2-4) mesh with each other in sequence. The gear crank connecting shaft (1-2-2-5) corresponding to the first gear (1-2-2-1) is connected to the seedling pushing motor (1-2-1) through the seedling pushing motor coupling (1-2-7). The crank slider seedling pushing mechanism (1-2-3) includes a slide groove (1-2-3-3). The slide groove (1-2-2-3) is connected to the seedling pushing motor (1-2-1) through the slide groove (1-2-2-3-4). -3-3) is installed on the base plate (1-2-5) of the crank-slider type cone-shaped seedling pushing mechanism. A push rod (1-2-3-1) is slidably arranged in the groove (1-2-3-3). The front end of the push rod (1-2-3-1) is connected to a cone (1-2-3-2). The rear end of the push rod (1-2-3-1) is rotatably connected to one end of the connecting rod (1-2-3-4) through a pin (1-2-2-7). The other end of the connecting rod (1-2-3-4) is rotatably connected to one end of the crank (1-2-3-5) through the pin (1-2-2-7). The other end of the crank (1-2-3-5) is installed on the gear-crank linkage shaft (1-2-2-5).

4. The automatic seedling transplanting machine according to claim 3, characterized in that: The circulating intermittent seedling feeding mechanism (2) includes a seedling feeding mechanism base plate (2-4), which is fixed on a second aluminum profile (1-1-12). The second aluminum profile (1-1-12) is laterally fixed on the first aluminum profile (1-1-11) and the third aluminum profile (1-1-13). A slide (2-2) is provided on the seedling feeding mechanism base plate (2-4). Several rhomboid bearing seats (2-8) are installed on the seedling feeding mechanism base plate (2-4). The drive sprocket shaft (2-5) passes through the reserved hole in the seedling feeding mechanism base plate (2-4) and the inner hole of the rhomboid bearing seat (2-8). The rhomboid bearing seat (2-8) is provided with a set screw for fixing the drive sprocket shaft (2-5). The tensioning wheel shaft (2-6) passes through the inner hole of the rhomboid bearing seat (2-8) and is fixed to the seedling feeding mechanism. On the base plate (2-4), the driven sprocket shaft (2-7) passes through the inner hole of the diamond-shaped bearing seat (2-8) and is fixed on the base plate (2-4) of the seedling feeding mechanism. The driven bevel gear (2-9) is fixed on the lower section of the driving sprocket shaft (2-5). The driving sprocket shaft (2-5) is fixed with a driving sprocket (2-1-3). The driven sprocket shaft (2-7) is fixed with a driven sprocket (2-1-4). The tension wheel shaft (2-6) is fixed with a tension wheel (2-1-1). Several chain links (2-1-2) are meshed on the outside of the driving sprocket (2-1-3), the driven sprocket (2-1-4), and the tension wheel (2-1-1). Funnel-shaped seedling cups (2-3) are fixed on the chain links (2-1-2). There is a chain link (2-1-2) between two adjacent funnel-shaped seedling cups (2-3).

5. The automatic seedling transplanting machine according to claim 4, characterized in that: The multi-link duckbill automatic transplanting and power linkage mechanism (3) includes two bottom frame side plates (3-8). The two bottom frame side plates (3-8) are symmetrically fixed on both sides of the bottom frame plate (3-7). A fixing ring (3-9) is provided in the bottom frame side plate (3-8). The multi-link duckbill automatic transplanting mechanism (3-1) passes through the fixing ring (3-9). The two multi-link duckbill automatic transplanting mechanisms (3-1) are symmetrically arranged on both sides of the bottom frame plate (3-7). A power linkage mechanism (3-2) is installed above the bottom frame plate (3-7). The power linkage mechanism (3-2) drives the multi-link duckbill automatic transplanting mechanism (3-1) to move.

6. The automatic seedling transplanting machine according to claim 5, characterized in that: The multi-link automatic duckbill transplanting mechanism (3-1) includes two sets of sixth aluminum profiles (3-4) and seventh aluminum profiles (3-5) respectively arranged on both sides of the bottom frame plate (3-7). Fifth aluminum profiles (3-3) are arranged horizontally on the sixth aluminum profiles (3-4) and seventh aluminum profiles (3-5). Bearing seats (3-1-17) are fixed on the two fifth aluminum profiles (3-3). The driven shaft (3-1-1) passes through the two bearing seats (3-1-17) and is fixed. The first support shaft (3-1-2) and the second support shaft (3-1-3) pass through the bottom frame side plate (3-8) respectively. The first support shaft (3-1-2) is fixed with the retaining ring (3-9). Both ends of the first support shaft (3-1-2) are rotatably connected to one end of each of the two first rocker arms (3-1-12). A flange bearing (3-1-5) is installed at the bottom of the first rocker arm (3-1-12), and the inner ring of the flange bearing (3-1-5) passes through both sides of the first support shaft (3-1-2). A retaining ring (3-1-6) is installed at the end of the first support shaft (3-1-2) outside the flange bearing (3-1-5). Both ends of the second support shaft (3-1-3) are rotatably connected to one end of each of the two second rocker arms (3-1-13). The second rocker arm (3-1-13) has a flange bearing (3-1-5) installed at its bottom, and the inner ring of the flange bearing (3-1-5) is inserted into both sides of the second support shaft (3-1-3). A retaining ring (3-1-6) is installed at the end of the second support shaft (3-1-3) outside the flange bearing (3-1-5). Both ends of the driven shaft (3-1-1) are fixedly connected to one end of the crank (3-1-16), and the other end of the crank (3-1-16) is rotatably connected to one end of the connecting rod (3-1-14) through the first pin (3-1-4). The duckbill connecting rod (3-1-11) is also included. The first rocker arm (3-1-12) and the connecting rod (3-1-14) are hinged together by the second pin (3-1-7). The duckbill connecting rod (3-1-11) is hinged together by the third pin (3-1-8) and the other end of the second rocker arm (3-1-13). Cotter pins (3-1-15) are inserted into the first pin (3-1-4), the second pin (3-1-7) and the third pin (3-1-8). A cam rod (3-1-19) is installed on the fifth aluminum profile (3-3). A cam (3-1-18) is fixed on the driven shaft (3-1-1).

7. The automatic seedling transplanting machine according to claim 6, characterized in that: The duckbill transplanting mechanism (3-1-10) includes a funnel (3-1-10-6), which is inserted into the circular hole at the front end of the duckbill connecting rod (3-1-11). The left duckbill (3-1-10-2) and the right duckbill (3-1-10-4) are mounted on the front end of the duckbill connecting rod (3-1-10) via a double-headed grooved pin (3-1-10-1). The double-headed grooved pin (3-1-10-1) is fixed on both sides by retaining rings (3-1-10-7). The left duckbill (3-1-10-2) is fixed to prevent it from rotating. The tension spring (3-1-10-3) hooks the left duckbill (3-1-10-2) and the right duckbill (3-1-10-4) on both sides. The brake bead (3-1-10-5) is fixed on the right duckbill (3-1-10-4). One end of the brake cable is fixed on the cam pull rod (3-1-19), and the other end passes through the left duckbill (3-1-10-2) and is fixed on the brake bead (3-1-10-5).

8. The automatic seedling transplanting machine according to claim 7, characterized in that: The power linkage mechanism (3-2) includes three bearing seats (3-2-2), which are fixed on the riser pad (3-6). The riser pad (3-6) is located on the bottom frame plate (3-7). A motor mount is provided on the sixth aluminum profile (3-4). A transplanting motor (3-2-10) is fixed on the motor mount. The transplanting motor (3-2-10) is coaxially fixed to one end of the drive shaft (3-2-1) via a coupling (3-2-9). The other end of the drive shaft (3-2-1) passes through one of the bearing seats (3-2-2) and is fixed with a set screw. A second synchronous pulley (3-2-5) and a... The fourth synchronous pulley (3-2-8) is fixed by an internal set screw. The third synchronous pulley (3-2-7) is fixed on the driven shaft (3-1-1). The bevel gear driven shaft (3-2-12) passes through the two bearing seats (3-2-2) and is fixed by a set screw. The first synchronous pulley (3-2-3) is fixed in the middle. The long synchronous belt (3-2-4) is tightly fitted on the first synchronous pulley (3-2-3) and the second synchronous pulley (3-2-5). The short synchronous belt (3-2-6) is tightly fitted on the third synchronous pulley (3-2-7) and the fourth synchronous pulley (3-2-8). The bevel gears (3-2-11) are fixed at both ends of the bevel gear driven shaft (3-2-12) and mesh with the driven bevel gear (2-9).

9. The automatic seedling transplanting machine according to claim 8, characterized in that: The trenching and covering mechanism (4) includes two screw support seats (4-1-1), which are fixed to the bottom frame plate (3-7). Each screw support seat (4-1-1) has a bearing inner hole, which is used to install the two ends of a positive and negative thread screw (4-1-2). Nut sliders (4-1-3) are installed on the threads of the positive and negative thread screws (4-1-2) with different helical directions. The two nut sliders (4-1-3) are symmetrically installed about the positive and negative thread joint. Each nut slider (4-1-3) is connected to the upper end of two pull rods (4-1-5), and the upper ends of the two pull rods (4-1-5) are connected to two hinge seats (4-1...). -6) Connection: The hinge seat (4-1-6) is fixed on the tenth aluminum profile (4-12), and a handle (4-1-4) is installed at one end of the positive and negative threaded screw (4-1-2); The thirteenth aluminum profile (4-15) is fixed on both sides of the tenth aluminum profile (4-12), and a ditching plow blade fixing bracket (4-6) is fixed on the thirteenth aluminum profile (4-15). A positioning screw (4-5) is connected to the ditching plow blade fixing bracket (4-6), and a ditching plow blade (4-3) is connected to the thirteenth aluminum profile (4-15) through a set screw (4-4). The ditching plow blade (4-3) is installed below the positioning screw (4-5) and its fixed position is adjusted by the positioning screw (4-5).

10. The automatic seedling transplanting machine according to claim 9, characterized in that: The soil covering device lifting mechanism (4-2) includes a hinge (4-2-1), an electric push rod (4-2-2), a first electric push rod hinge seat (4-2-3), an electric push rod fixing seat (4-2-4), and a second electric push rod hinge seat (4-2-5). The electric push rod fixing seat (4-2-4) is fixed to the side of the bottom frame side plate (3-8). The first electric push rod hinge seat (4-2-3) is fixed to the electric push rod fixing seat (4-2-4). The second electric push rod hinge seat (4-2-5) is fixed to the eleventh aluminum profile (4-13). The two electric push rods (4-2-2) are fixed to the first electric push rod hinge seat (4-2-3) and the second electric push rod hinge seat (4-2-5) by positioning bolts and positioning holes at both ends of the electric push rods (4-2-2). The hinge ( 4-2-1) is connected to the twelfth aluminum profile (4-14) and the eleventh aluminum profile (4-13) on both sides respectively. The twelfth aluminum profile (4-14) is fixed on the bottom frame plate (3-7) and connected to the eleventh aluminum profile (4-13). The eleventh aluminum profile (4-13) is connected to the eighth aluminum profile (4-10) and the ninth aluminum profile (4-11) on both sides. The eighteenth aluminum profile (4-10) and the ninth aluminum profile (4-11) are connected to the fourteenth aluminum profile (4-16) laterally. The fourteenth aluminum profile (4-16) is connected to the soil covering frame (4-9). The soil covering frame (4-9) is connected to the soil covering plate (4-7) and fixed to the soil covering frame (4-9) by bolts. The soil covering wheel (4-8) is connected to the bottom two sides of the soil covering frame (4-9) by positioning bolts.

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