A hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function

Abstract

The present application provides a hanging basket duckbill type pineapple transplanter with hole covering and pressing linkage function, and relates to the field of planting machinery. The pineapple transplanter comprises a walking driving system, a planting monomer assembly and a seedling bracket. The planting monomer assembly comprises a rotating disc fixing frame, a bias rotating disc mechanism, a hole digging duckbill assembly, a convex contact device and a rebound soil covering device. The bias rotating disc mechanism comprises a front rotating disc and a rear rotating disc. The hole digging duckbill assembly is hinged between the front rotating disc and the rear rotating disc. The convex contact device is fixed on the front rotating disc and the rear rotating disc. A plurality of hole digging duckbill assemblies and a plurality of convex contact devices are arranged in a circumferential interval about the front / rear rotating disc. The convex contact device is in top contact with the hole digging duckbill assembly. When the hole digging duckbill assembly starts to pull out upward, the hole digging duckbill assembly is opened. The rebound soil covering device is arranged on the lower side of the bias rotating disc mechanism. The soil covering shovel is installed on the inner side of the rebound rod. When the hole digging duckbill assembly pulls out the hole opening, the two side duckbills are separated from the soil covering shovel. The soil covering shovel resets the soil covering, and ensures the stability of the seedling root.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of planting machinery, in particular to a hanging basket duckbill type pineapple transplanter with hole digging, soil covering and tamping linkage functions. BACKGROUND

[0002] At present, the pineapple planting basically adopts the transplanted mode of pineapple seedlings, and due to the influence of the size of the pineapple seedlings, the transplanter is less used for mechanized operation. The common pineapple planting machines are mainly chain clamp type, cup planting type and straight drop type, and due to the lack of research on the adaptability of seedlings-machine-soil interaction, they are difficult to be widely applied in actual production in the field.

[0003] I. The chain clamp type planting machine includes a rack, a driving wheel, a clamping mechanism, a seedling placing device, a ditching device, and a soil returning and compacting device. Its working process is: seedling preparation-land preparation-drag tractor traction-driving wheel rotation-clamping mechanism rotation-manual seedling placing-mechanical seedling clamping-seedling feeding-planting- soil returning and compacting. Since the mechanical seedling clamping belongs to strong constraint planting, it is only suitable for small size seedlings, and it is difficult to meet the standard seedlings of more than 300mm, and the seedlings with more lush leaves are easy to jam, and cannot be widely used in field operation.

[0004] II. The cup planting type planting machine includes a rack, a ridging device, a fertilizing device, a film covering device, a seedling throwing device, a seedling carrying device, a compacting device, a pipe laying device rack, a transmission system, and a seedling placing device. Its working process is: seedling preparation-land preparation-drag tractor traction-drag tractor power output shaft rotation-fertilizing and ridging-pipe and film laying-manual seedling placing-mechanical seedling placing, seedling arranging-seedling receiving, seedling feeding-(film breaking)-soil entering-planting-soil returning and compacting. Since the seedling cup structure belongs to medium constraint planting, it has poor adaptability to seedlings with skewed roots, and it is difficult to break the film, enter the soil and plant. It has high requirements for soil conditions.

[0005] III. The straight drop type planting machine includes a rack, a fertilizing device, a seedling feeding device, a ditching device, a transmission system, a seedling placing device, and a compacting device. Its working process is: seedling preparation-land preparation-drag tractor traction-driving wheel rotation-fertilizing roller rotation-fertilizing-manual seedling placing-seedling feeding device separating seedlings-seedling arranging-seedling dropping-planting-soil returning and compacting. Since the straight drop type belongs to weak constraint planting, it has low stability and depends on dry soil with good fluidity, and cannot meet the actual planting requirements in the field.

[0006] In summary, the existing pineapple transplanter cannot be applied to standard size pineapple seedlings, the transplanted stability of the pineapple seedlings is poor, the transplanted qualified rate and planting quality cannot be guaranteed, and the purpose of large area standardized planting cannot be achieved. SUMMARY

[0007] In order to solve the above problems, the purpose of the present application is to provide a hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function, so as to solve the problem that it is difficult to be suitable for standard size pineapple seedlings, the transplanted stability of pineapple seedlings is poor, the qualified rate of transplantation and the planting quality cannot be guaranteed, and large-area standardized planting cannot be realized.

[0008] The technical scheme of the hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function of the present application is as follows:

[0009] The hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function comprises a traction suspension frame, a walking driving system, a planting monomer assembly and a seedling bracket arranged on the traction suspension frame, and the walking driving system is in transmission connection with the planting monomer assembly.

[0010] The planting monomer assembly comprises a rotating disc fixing frame, a bias rotating disc mechanism, a plurality of hole digging duckbill assemblies, a plurality of convex contact devices and a rebound soil covering device, the bias rotating disc mechanism comprises front and rear rotating discs hinged to the front and rear positions of the rotating disc fixing frame, and the axes of the front and rear rotating discs are arranged in parallel and are in staggered positions.

[0011] The hole digging duckbill assembly is hinged between the front and rear rotating discs, and a plurality of the hole digging duckbill assemblies are arranged in a circumferential interval about the front or rear rotating disc; the convex contact device is fixed on the front and rear rotating discs, and a plurality of the convex contact devices are arranged in a circumferential interval about the front or rear rotating disc; the convex contact device is in top contact with the hole digging duckbill assembly, so as to top contact the hole digging duckbill assembly when the hole digging duckbill assembly moves to below the rotating disc, completes the hole digging action and starts to pull out the hole mouth.

[0012] The rebound soil covering device is arranged on the lower side of the bias rotating disc mechanism, the rebound soil covering device comprises two rebound rods and two soil covering shovels, the two rebound rods are arranged in parallel and in an interval, the two soil covering shovels are respectively installed on the inner sides of the rebound rods, and the soil covering shovels are arranged in correspondence with the hole digging duckbill assemblies, so that the two side duckbills are separated from the soil covering shovels when the hole digging duckbill assemblies pull out the hole mouth, so as to reset the soil covering shovels.

[0013] Further, the hole digging duckbill assembly comprises a seedling cup base body, two symmetrical open-close duckbills, a closing tension spring and two sleeve joint shaft heads, the front and rear parts of the seedling cup base body are respectively provided with mounting shaft holes, the sleeve joint shaft heads are hinged between the mounting shaft holes and the front or rear rotating disc, the two symmetrical open-close duckbills are hingedly installed on the outer side of the lower end of the seedling cup base body, and the closing tension spring is connected between the two symmetrical open-close duckbills, so that the two symmetrical open-close duckbills are in a closed state.

[0014] Further, the rotation centers of the front rotary disc and the rear rotary disc are O F and O B , the two rotation centers are in the same horizontal line, the distance between the two rotation centers is L1, L1 is between 150mm and 200mm, the radius of the front rotary disc and the rear rotary disc is L2, L2 is between 280mm and 330mm.

[0015] The hinged center of the front rotary disc corresponding to the hole-punching duckbill assembly is O PF , the hinged center of the rear rotary disc corresponding to the hole-punching duckbill assembly is O PB , the line connecting the two hinged centers is O PF O PB , O PF O PB =L1; the vertical distance between the shaft center of the sleeve joint shaft head and the lower end of the symmetrical opening and closing duckbill is L3, L3 is between 200mm and 250mm, and L3 is perpendicular to O PF O PB .

[0016] Further, the height of the rotation center of the front rotary disc and the rear rotary disc from the soil surface is H C , H C is between 550mm and 630mm, the planting depth of the hole-punching duckbill assembly is h P , h P is between 50mm and 120mm, the plant spacing is any size between 300mm and 350mm; the longitudinal hole mouth width of the hole-punching duckbill assembly after the hole-punching is W P , W P is less than the transverse width of the hole-punching duckbill assembly.

[0017] Further, the opening width of the symmetrical opening and closing duckbill is W op , W op is between 70mm and 110mm, the cross-sectional profile of the seedling cup base is square, circular or polygonal, the inscribed circle diameter of the seedling cup base is Sc, Sc is between 100mm and 140mm; the height of the hole-punching duckbill assembly is H1, H1 is between 250mm and 275mm.

[0018] Further, the initial distance between the inner sides of the two covering shovels is W bf , W bf is between 85mm and 105mm, the rear inner side of the two rebound rods is further provided with an auxiliary elbow, the distance between the two auxiliary elbows is W ac , W acThe auxiliary elbow is arranged at the rear side of the covering shovel at a distance of 90mm-100mm from the covering shovel, and the distance between the auxiliary elbow and the covering shovel is W sfc , W sfc The distance is 5mm-15mm.

[0019] Further, the convex contact device comprises a convex contact base body, a flange top block and a scale adjusting piece, the convex contact base body is fixedly connected with the inner wall of the front rotary disc or the inner wall of the rear rotary disc, a bearing is installed on the convex contact base body, and the sleeve joint shaft head is hinged in the bearing; the scale adjusting piece is arranged on the upper surface of the flange top block, a threaded hole is formed in the lower end of the convex contact base body, the flange top block is provided with a connecting long hole, and a fastening bolt is installed between the threaded hole and the connecting long hole to adjust the distance between the lower surface of the flange top block and the center of the bearing of the convex contact base body.

[0020] Further, one side of each of the two symmetrical open-close duckbills is connected with an extension arm structure, a rolling bearing is installed at the end of each of the two extension arm structures, the lower edge of the flange top block is in a circular arc shape, and the flange top block is in rolling cooperation with the rolling bearing.

[0021] Further, the rebound covering device further comprises a fixed bending plate, a reset tension spring and two flow guide rods, the rebound rods and the flow guide rods are fixed on the fixed bending plate, and the two rebound rods and the two flow guide rods are symmetrically distributed;

[0022] An extension lug is arranged on one side of the fixed bending plate, the planting monomer assembly is also provided with a shell hanging hole, the reset tension spring is connected between the extension lug and the shell hanging hole, the bending angle of the covering shovel is arranged to be downwardly inclined, and the rebound rod, the flow guide rod and the auxiliary elbow are all made of spring steel.

[0023] Further, the planting monomer assembly further comprises a tamping device, the tamping device further comprises a tamping wheel frame, a clamping plate frame, two fixed arms, two telescopic adjusting plates and two tamping wheels, the clamping plate frame is buckled on the upper end of the tamping wheel frame, and a fixing bolt is connected between the clamping plate frame and the tamping wheel frame, the two fixed arms are symmetrically arranged on the two sides of the tamping wheel frame, the tamping wheel is provided with an end shaft, the end shaft is hinged with a telescopic adjusting plate, and an angle adjusting lug is connected between the fixed arm and the telescopic adjusting plate.

[0024] The hanging basket duckbill type pineapple transplanting machine with the hole digging, soil covering and pressing linkage function has the advantages that: the hanging basket duckbill type pineapple transplanting machine with the hole digging, soil covering and pressing linkage function adopts the design form of the walking driving system, the planting monomer assembly, the seedling bracket and the traction suspension frame, the traction suspension frame is connected with the tractor to provide power for the pineapple transplanting machine, and the walking driving system moves forward on the soil surface and drives the planting monomer assembly to work synchronously.

[0025] When the hole digging duckbill assembly is in the upper position, the workers place the pineapple seedlings on the seedling bracket into the hole digging duckbill assembly in sequence, and ensure that there is a pineapple seedling in each hole digging duckbill assembly, which is applicable to the standard size pineapple seedlings; along with the forward walking operation of the pineapple transplanting machine, the front disc, the rear disc and the hole digging duckbill assembly of the hole digging duckbill assembly are synchronously rotated under the driving of the walking driving system, so that the hole digging duckbill assembly storing the pineapple seedlings is rotated to the lower end and dug into the soil. When the hole digging duckbill assembly moves to the lower side of the disc to complete the hole digging action and starts to pull out the hole, the convex contact device is in top contact with the rolling bearing at the end of the extension arm structure of the hole digging duckbill assembly, overcomes the tension of the closed tension spring, and makes the two symmetrical open and close duckbills open, so that the pineapple seedling is timely dropped into the soil hole in a vertical manner, and the hole digging and seedling dropping actions are quickly and accurately completed.

[0026] Moreover, the planting monomer assembly is also combined with the rebound soil covering device, the rebound soil covering device is designed with two rebound rods and a soil covering shovel, the soil covering shovel is arranged in correspondence with the hole digging duckbill assembly, the hole digging duckbill assembly is in contact with the soil covering shovel when the hole digging duckbill assembly is rotated to the lower end and performs the opening action, the opening action of the hole digging duckbill assembly overcomes the elastic force of the rebound rod and makes the rebound rod outwardly open by a certain distance; when the hole digging duckbill assembly is upwardly rotated, the hole digging duckbill assembly is separated from the convex contact device, the top contact between the two is released, and the hole digging duckbill assembly starts to automatically close, under the elastic force of the rebound rod, the soil covering shovel can be quickly inwardly folded, and the soil covering action after the hole digging and seedling dropping is quickly and accurately completed, the stability of the seedling root after planting is ensured, the transplanting qualification rate and the planting quality are ensured, the continuous uninterrupted, high-efficiency and high-reliability transplanting operation can be realized, and the purpose of large-area standardized planting can be achieved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1The shaft measurement schematic view of the pineapple transplanter in the specific embodiment of the hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function of the application;

[0028] Figure 2 The mechanical principle diagram of the transmission system in the specific embodiment of the hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function of the application;

[0029] Figure 3 The three-dimensional schematic view of the walking driving system in the specific embodiment of the hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function of the application;

[0030] Figure 4 The three-dimensional schematic view of the walking driving system in the specific embodiment of the hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function of the application; Figure 3 The local enlarged view of the walking wheel in the specific embodiment of the hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function of the application;

[0031] Figure 5 The explosion schematic view of the steel ball clutch in the specific embodiment of the hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function of the application;

[0032] Figure 6 The three-dimensional schematic view of the planting monomer assembly in the specific embodiment of the hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function of the application;

[0033] Figure 7 The mechanical principle diagram of the biasing turntable mechanism in the specific embodiment of the hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function of the application;

[0034] Figure 8 The explosion schematic view of the hole digging duckbill assembly in the specific embodiment of the hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function of the application;

[0035] Figure 9 The top view schematic view of the biasing turntable mechanism in the specific embodiment of the hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function of the application;

[0036] Figure 10 The size schematic view of the convex contact device in the specific embodiment of the hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function of the application;

[0037] Figure 11 The size schematic view of the hole digging duckbill assembly in the specific embodiment of the hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function of the application;

[0038] Figure 12 The three-dimensional schematic view of the rebound soil covering device in the specific embodiment of the hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function of the application;

[0039] Figure 13 Figure is the plan view of the rebound soil covering device of the specific embodiment of the hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function of the present application;

[0040] Figure 14 Figure is the perspective view of the pressing device of the specific embodiment of the hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function of the present application;

[0041] Figure 15 Figure is the front view of the traction suspension frame of the specific embodiment of the hanging basket duckbill type pineapple transplanter with hole digging, soil covering and pressing linkage function of the present application.

[0042] Figure: 1 - walking driving system, 11 - main transmission shaft, 110 - transmission fixed seat, 111 - square bolt, 12 - walking wheel frame, 13 - walking wheel, 131 - wheel shaft, 1310 - rotation stopping groove, 132 - flange welded hub, 133 - eccentric column, 134 - driving pawl, 135 - pawl torsional spring;

[0043] 14 - first driving sprocket, 15 - first driven sprocket, 16 - second driving sprocket, 17 - second driven sprocket, 18 - steel ball clutch, 181 - steel ball clutch groove seat, 182 - steel ball, 183 - steel ball clutch outer cover, 184 - transmission shaft sleeve, 185 - clutch compression spring, 186 - retreat stopping nut;

[0044] 2 - planting monomer assembly, 20 - pineapple seedling, 21 - rotating disc fixed frame, 211 - upper connecting rod, 212 - lower connecting rod, 22 - bias rotating disc mechanism, 221 - front rotating disc, 222 - rear rotating disc, 223 - rotating disc mounting seat, 224 - friction flange plate, 225 - brake mounting plate, 226 - fine adjustment compression spring, 227 - brake pad;

[0045] 23 - hole digging duckbill assembly, 231 - seedling cup base body, 232 - symmetrical opening and closing duckbill, 233 - closing tension spring, 234 - sleeving shaft head, 235 - extension arm structure, 24 - convex contact device, 241 - convex contact seat base body, 242 - flange top block, 243 - scale adjusting piece, 244 - connecting long hole, 25 - rebound soil covering device, 251 - rebound rod, 252 - soil covering shovel, 253 - auxiliary elbow, 254 - fixed connecting elbow plate, 255 - reset tension spring, 256 - flow guide rod;

[0046] 26 - pressing device, 261 - pressing wheel frame, 262 - clamping plate frame, 263 - fixed arm, 264 - telescopic adjusting plate, 265 - pressing wheel, 266 - angle adjusting ear, 267 - height adjusting handle, 268 - soil scraping plate, 3 - seedling bracket, 4 - traction suspension frame, 41 - main beam, 42 - ditching and marking device, 43 - hydraulic push lever, 5 - seat, S - planting motion trajectory. Detailed Implementation

[0047] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0048] This embodiment describes a hanging basket duckbill type pineapple transplanter with a linkage function of hole-punching, soil-covering, and compaction. Figures 1 to 15 As shown, the hanging basket duckbill type pineapple transplanter with hole-punching, soil-covering, and compaction linkage functions includes a walking drive system 1, a planting unit assembly 2, a seedling bracket 3, and a traction suspension frame 4. The walking drive system 1, the planting unit assembly 2, and the seedling bracket 3 are all mounted on the traction suspension frame 4, and the walking drive system 1 is connected to the planting unit assembly 2 via transmission. The planting unit assembly 2 includes a turntable fixing frame 21, an offset turntable mechanism 22, multiple hole-punching duckbill components 23, multiple convex contact devices 24, and a rebound soil-covering device 25. The offset turntable mechanism 22 includes a front turntable 221 and a rear turntable 222 hinged to the front and rear positions of the turntable fixing frame 21. The axes of the front turntable 221 and the rear turntable 222 are arranged in parallel and offset order.

[0049] The puncture-adhesive duckbill assembly 23 is hinged between the front turntable 221 and the rear turntable 222, and multiple puncture-adhesive duckbill assemblies 23 are arranged circumferentially spaced about the front turntable 221 or the rear turntable 222; the protruding contact device 24 is fixed on the front turntable 221 and the rear turntable 222, and multiple protruding contact devices 24 are arranged circumferentially spaced about the front turntable 221 or the rear turntable 222. The protruding contact device 24 engages with the puncture-adhesive duckbill assembly 23 so that when the puncture-adhesive duckbill assembly 23 moves to the bottom of the turntable, completes the puncture action, and begins to pull out the puncture site, the protruding contact device 24 engages with the puncture-adhesive duckbill assembly 23 to open it.

[0050] The rebound covering device 25 is located on the lower side of the offset turntable mechanism 22. The rebound covering device 25 includes two rebound rods 251 and a covering shovel 252. The two rebound rods 251 are arranged in parallel and spaced apart. The two covering shovels 252 are respectively installed on the inner side of the rebound rods 251. The covering shovels 252 are correspondingly arranged with the hole-punching duckbill assembly 23. When the hole-punching duckbill assembly 23 is pulled out of the hole, the duckbills on both sides are disengaged from the covering shovels 252 so that the covering shovels 252 can be reset to cover the soil.

[0051] The hanging basket duckbill type pineapple transplanter with the hole covering and pressing linkage function adopts the design form of a walking driving system 1, a planting monomer assembly 2, a seedling bracket 3 and a traction suspension frame 4, and provides power for the pineapple transplanter through the connection of the traction suspension frame 4 and the tractor. The walking driving system 1 moves forward on the soil surface and drives the planting monomer assembly 2 to work synchronously. The planting monomer assembly 2 comprises a rotating disc fixing frame 21, a bias rotating disc mechanism 22, a plurality of hole making duckbill assemblies 23, a plurality of convex contact devices 24 and a rebound soil covering device 25. The front rotating disc 221, the rear rotating disc 222 of the bias rotating disc mechanism 22 and the plurality of hole making duckbill assemblies 23 constitute a parallelogram mechanism. The hole making duckbill assembly 23 is similar to a hanging basket structure, and the plurality of hole making duckbill assemblies 23 rotate around the rotation centers of the front rotating disc 221 and the rear rotating disc 222.

[0052] When the hole making duckbill assembly 23 is in the upper position, the pineapple seedlings on the seedling bracket 3 are placed in the hole making duckbill assembly 23 in sequence, and each hole making duckbill assembly 23 has a pineapple seedling, which can be suitable for standard size pineapple seedlings. With the forward walking operation of the pineapple transplanter, the bias rotating disc mechanism 22 rotates synchronously with the front rotating disc 221, the rear rotating disc 222 and the hole making duckbill assembly 23 driven by the walking driving system 1, so that the hole making duckbill assembly 23 storing the pineapple seedling rotates to the lower end and is inserted into the soil. When the hole making duckbill assembly 23 moves to the lower end of the rotating disc to complete the hole making action and starts to pull out the hole, the convex contact device 24 forms a top contact with the rolling bearing at the end of the extension arm structure 235 of the hole making duckbill assembly 23, overcomes the tension of the closed tension spring, and makes the two symmetrical opening and closing duckbills 232 open, so that the pineapple seedling falls vertically into the soil hole in time, and the hole making and seedling falling actions are quickly and accurately completed.

[0053] Moreover, the planting monomer assembly 2 also combines the rebound soil covering device 25, which is designed with two rebound rods 251 and a soil covering shovel 252. The soil covering shovel 252 is arranged corresponding to the hole making duckbill assembly 23. When the hole making duckbill assembly 23 rotates to the lower end and performs the opening action, the hole making duckbill assembly 23 contacts the soil covering shovel 252, and the opening action of the hole making duckbill assembly 23 overcomes the elastic force of the rebound rod 251 and makes the rebound rod 251 open outward by a certain distance. When the hole making duckbill assembly 23 rotates upward, the hole making duckbill assembly 23 is separated from the convex contact device 24, and the top contact between the two is released. The hole making duckbill assembly 23 starts to automatically close, and the soil covering shovel 252 can be quickly folded inward under the elastic force of the rebound rod 251, so that the soil covering action after hole making and seedling falling can be quickly and accurately completed, the stability of the seedling root after planting is ensured, the transplanting qualification rate and planting quality are ensured, and continuous uninterrupted, efficient and reliable transplanting and planting operation can be carried out, so that the purpose of large area standardized planting can be achieved.

[0054] The traction suspension frame 4 is located at the front end of the whole machine, the walking driving system 1, the planting monomer assembly 2 and the seedling bracket 3 are all fastened and sleeved on the main beam 41 through square bolts, as shown in Figure 2 、 Figure 3 The walking driving system 1 is symmetrically provided with two, which are respectively located at the two sides of the whole machine, the walking wheel 13 is rotatably hinged and installed through a bearing seat and a walking wheel frame 12, the outer side of the walking wheel frame 12 is provided with a primary driving sprocket 14, the primary driving sprocket 14 is synchronously rotatably connected with the walking wheel 13, and an additional tensioning mechanism is provided with a primary driven sprocket 15 through a chain cover and equipment.

[0055] As shown in Figure 4 , the walking wheel 13 comprises an axle 131, a flange welded hub 132, an eccentric column 133 and a driving pawl 134, the inner wall surface of the walking wheel 13 is coaxially fastened with the flange welded hub 132, the flange welded hub 132 is coaxially hingedly installed with the axle 131 through a bearing and can rotate relatively, a plurality of rotation stopping grooves 1310 are formed in the axle 131, and the length direction of the rotation stopping grooves 1310 extends along the axial direction of the axle 131. The inner side of the flange welded hub 132 is further fixed with the eccentric column 133, the end of the eccentric column 133 is coaxially hingedly installed with the driving pawl 134, and the eccentric column 133 is coaxially sleeved with a pawl torsional spring 135, the pawl torsional spring 135 keeps in constant contact with the front and rear side walls of the driving pawl 134, and the end of the driving pawl 134 is designed as a "wedge-shaped" inclined surface structure, and the "wedge-shaped" tip of the driving pawl 134 can be inserted into the rotation stopping groove 1310 of the axle 131.

[0056] When the walking wheel 13 rotates forward, the "wedge-shaped" tip of the driving pawl 134 is in a "pressing locking" state with the rotation stopping groove 1310 of the axle 131 under the action of the pawl torsional spring 135, at this time, the primary driving sprocket 14 is driven to rotate forward synchronously; when the walking wheel 13 rotates backward, the "gentle slope inclined surface" of the driving pawl 134 naturally slides out of the outer edge of the side wall of the rotation stopping groove 1310 along the tangential direction, and overcomes the pressure of the pawl torsional spring 135, so that the "wedge-shaped" tip of the driving pawl 134 is separated from the rotation stopping groove 1310, at this time, the walking wheel 13 rotating backward is in an idle state relative to the axle 131 and the primary driving sprocket 14.

[0057] As shown in Figure 2As shown, the primary driven sprocket 15 and the secondary driven sprocket 16 of the planting monomer assembly 2 are both fixed perpendicularly to the main transmission shaft 11 by screwing, and can rotate synchronously. The main transmission shaft 11 can be a square shaft or a round shaft, and the specific perpendicular fixing is not limited to screwing.

[0058] As shown in the figure, Figure 5 The inner side of the transmission fixed seat 110 is provided with a steel ball clutch 18, which specifically includes a steel ball clutch groove seat 181, a steel ball 182, a steel ball clutch outer cover 183, a transmission shaft sleeve 184, a clutch compression spring 185, and a retreat stop nut 186. According to the order of the steel ball clutch groove seat 181, the steel ball 182, the steel ball clutch outer cover 183, the transmission shaft sleeve 184, the clutch compression spring 185, and the retreat stop nut 186, the secondary driven sprocket 16 is coaxially installed. Among them, the pressure of the clutch compression spring 185 on the steel ball clutch outer cover 183 can be controlled by rotating the retreat stop nut 186, and then the pressure of the steel ball 182 pressed into the steel ball clutch groove seat 181 can be controlled.

[0059] As shown in the figure, Figure 6 The biasing turntable mechanism 22 is hingedly connected to the hole positions at the upper and lower ends of the transmission fixed seat 110 through the upper connecting rod 211 and the lower connecting rod 212, respectively. The rear ends of the upper connecting rod 211 and the lower connecting rod 212 are hingedly connected to the two hole positions at the front end of the turntable fixed frame 21, respectively, thereby forming a four-bar linkage mechanism. The transmission fixed seat 110 is also provided with a pitch adjusting device, which is specifically a ratchet wrench. The center screw of the ratchet wrench is screwed into the threaded hole of the lower end square steel center. The two ends of the square steel are sleeved in the upper end groove hole of the transmission fixed seat 110. The lower end of the square steel is hung with the lower connecting rod 212 through a tension spring. By adjusting the ratchet wrench, the relative height of the center screw and the square steel is controlled, and the tension spring is driven to adjust the floating and sinking posture of the lower connecting rod 212, thereby realizing the pitch height adjustment of the four-bar linkage mechanism.

[0060] The front disc 221 and the rear disc 222 of the biasing disc mechanism 22 are respectively hinged at the right end and the left end of the disc mounting seat 223 through bearings, and the secondary driven sprocket 17 is coaxially fixed on the outside of the front disc 221 and can synchronously rotate, the brake mounting plate 225 is symmetrically fastened and mounted on the disc mounting seat 223, the micro-adjusting compression spring 226 is respectively sleeved on the left and right sides of the brake mounting plate 225, the brake pad 227 is buckled on the outer wall of the micro-adjusting compression spring 226 and is fixed and positioned by a self-locking nut, and the friction surface of the brake pad 227 and the friction flange plate 224 are respectively coaxially fixed on the inner wall of the front disc 221 and the rear disc 222. The friction surface of the brake pad 227 and the friction flange plate 224 are always in a state of close contact, and the pressure deformation amount of the micro-adjusting compression spring 226 can be adjusted by the self-locking nut to control the pressure of the contact surface, thereby controlling the friction braking performance.

[0061] The hole-poking duckbill assembly 23 comprises a seedling cup base 231, two symmetrical open-close duckbills 232, a closing tension spring 233 and two sleeved shaft heads 234, the front and rear parts of the seedling cup base 231 are respectively provided with mounting shaft holes, the sleeved shaft heads 234 are hinged between the mounting shaft holes and the front disc 221 / rear disc 222, the two symmetrical open-close duckbills 232 are hingedly mounted on the outside of the lower end of the seedling cup base 231, and the closing tension spring 233 is connected between the two symmetrical open-close duckbills 232 to make the two symmetrical open-close duckbills 232 in a closed state.

[0062] The front and rear parts of the seedling cup base 231 of the hole-poking duckbill assembly 23 are respectively provided with mounting shaft holes, the two sleeved shaft heads 234 are coaxially hingedly mounted, the two symmetrical open-close duckbills 232 are hingedly mounted with the round holes in the square front and rear outer wall surfaces of the lower end of the seedling cup base 231, the left and right hanging ears of the closing tension spring 233 are respectively hung on the convex cylindrical parts below the bearing grooves of the symmetrical open-close duckbills 232, and the closing tension spring 233 is always in a tension state, that is, the two symmetrical open-close duckbills 232 are in a closed state. The two sleeved shaft heads 234 hingedly mounted on the seedling cup base 231 are coaxially and distance-fixedly hinged at the bearing centers of the convex contact device 24.

[0063] The convex contact device 24 comprises a convex contact seat base 241, a flange top block 242 and a scale adjusting piece 243, the convex contact seat base 241 is fixedly connected with the inner wall of the front disc 221 or the inner wall of the rear disc 222, bearings are mounted on the convex contact seat base 241, and the sleeved shaft heads 234 are hingedly connected in the bearings of the convex contact device 24. As shown in Figure 8 、 Figure 11 The back side of the convex contact seat base 241 of the convex contact device 24 is provided with two threaded holes, the two threaded holes are respectively and angularly fastened on the inner wall of the front disc 221 or the inner wall of the rear disc 222 by bolts. The scale adjusting piece 243 is arranged on the upper surface of the flange top block 242. Figure 9As shown, the lower end of the convex contact base 241 is provided with two threaded holes, and the flange top block 242 is provided with two connecting long holes 244. A fastening bolt is installed between the threaded hole and the connecting long hole 244 to adjust the distance between the lower surface of the flange top block 242 and the bearing center of the convex contact base 241.

[0064] The lower surface of the flange top block 242 is a non-circular arc surface. The fastening position of the fastening bolt can be adjusted to change the distance between the lower surface of the flange top block 242 and the bearing center of the convex contact base 241, that is, the size of the "pushing stroke" of the cam in the mechanical principle, thereby increasing or reducing the opening width of the symmetrical open-close duckbill 232. The hole duckbill assembly 23 is provided with six and is circumferentially uniformly installed in the middle of the front rotating disc 221 and the rear rotating disc 222. One side of each of the two symmetrical open-close duckbills 232 is connected with an extension arm structure 235, and the end of each of the two extension arm structures 235 is installed with a rolling bearing. The lower edge of the flange top block 242 is a circular arc, and the flange top block 242 is in rolling fit with the rolling bearing. Under the action of the forward rotation of the bias rotating disc mechanism 22, the hole duckbill assembly 23 is sequentially and alternately operated to the bottom near area. The lower surface of the flange top block 242 will gradually turn downward until it touches the rolling bearing at the end of the extension arm structure 235, thereby overcoming the tension of the closing tension spring 233 and forcibly pressing open the two symmetrical open-close duckbills 232 around their hinge points.

[0065] It needs to be specially pointed out here that, as shown in the figure, Figure 7 , the working principle of the parallel four-bar basket type hole making machine, the rotation centers of the front rotating disc 221 and the rear rotating disc 222 are O F and O B respectively. The two rotation centers are on the same horizontal line, and the distance between the two rotation centers is L1. In this embodiment, L1 is between 150mm and 200mm. The radius of the front rotating disc 221 and the rear rotating disc 222 is L2, and L2 is between 280mm and 330mm. The hinge center of the front rotating disc 221 corresponding to the hole duckbill assembly 23 is O PF , and the hinge center of the rear rotating disc 222 corresponding to the hole duckbill assembly 23 is O PB . The line connecting the two hinge centers is O PF O PB , O PF O PB =L1. The total height of the hole duckbill assembly 23 is L3, which is the vertical distance between the axis of the sleeve joint shaft head 234 and the lower end of the symmetrical open-close duckbill 232. L3 is between 200mm and 250mm, and L3 is perpendicular to O PF O PB .

[0066] In addition, the distance between the rotation centers of the front rotating disc 221 and the rear rotating disc 222 and the soil surface is HC , H C between 550mm and 630mm, which can be adjusted to optimize the depth of the hole, but since the invention is aimed at the field transplanting of pineapples, it needs to be deeply integrated with the requirements of agronomic planting, the planting depth of the hole duckbill assembly 23 is h P , h P between 50mm and 120mm, and the plant spacing is between 300mm and 350mm, in order to ensure the standardization of field planting, the corresponding parameter range requirements need to be strictly followed to ensure the adaptability of the trajectory in the figure, the planting motion trajectory is shown by the dashed line S in Figure 7 . Among them, the longitudinal hole opening width of the hole duckbill assembly 23 after being buried in the soil is W P , W P less than the transverse width of the hole duckbill assembly 23, as shown in Figure 11 , which can further ensure the reliability and stability of pineapple seedling field planting.

[0067] In addition, the opening width of the symmetrical opening and closing duckbill 232 can be increased or decreased by adjusting the distance between the flange top block 242 and the bearing center of the flange seat base 241. As shown in Figure 11 , the opening width of the symmetrical opening and closing duckbill 232 is W op , W op between 70mm and 110mm, the cross-sectional profile of the seedling cup base 231 can be square, circular or polygonal, the inscribed circle diameter of the seedling cup base 231 is Sc, which needs to be ensured to be between 100mm and 140mm; the height of the hole duckbill assembly 23 is H1, which needs to be ensured to be between 250mm and 275mm.

[0068] As shown in Figure 12 , Figure 13 , the rebound soil covering device 25 includes two rebound rods 251, a soil covering shovel 252, a fixed bend plate 254, a reset tension spring 255 and two flow guide rods 256, the two rebound rods 251 and the two flow guide rods 256 are fixed on the fixed bend plate 254, and the two rebound rods 251 and the two flow guide rods 256 are symmetrically distributed. One side of the fixed bend plate 254 is provided with an extension ear, the planting monomer assembly 2 is also provided with a shell hanging hole, the reset tension spring 255 is connected between the extension ear and the shell hanging hole, the soil covering shovel 252 is fastened at the tail of the rebound rod 251 by bolts, the bend angle of the soil covering shovel 252 is inclined downward, and the rear inner side of the two rebound rods 251 is also provided with an auxiliary bend 253, the auxiliary bend 253 is located at the last end of the rebound rod 251, and the auxiliary bend 253 is spaced apart from the rear side of the soil covering shovel 252.

[0069] When the symmetrical open-close duckbill 232 moves to the lower end opening and closing in sequence, the inner edge of the covering shovel 252 can contact the outer wall of the symmetrical open-close duckbill 232 and open outward a certain distance against the elastic force of the rebounding rod 251 fixed thereto with the opening action; when the symmetrical open-close duckbill 232 moves to the upper region and is separated from the action of the flange top block 242 and starts to close, the covering shovel 252 can be quickly folded inward instantaneously under the elastic force of the rebounding rod 251, and the auxiliary elbow 253 can also achieve a certain deformation effect with the opening and closing of the symmetrical open-close duckbill 232.

[0070] It should be noted that the rebounding rod 251, the flow guide rod 256 and the auxiliary elbow 253 in the embodiment are all made of spring steel, which requires good elasticity, toughness and strength, for example: 65Mn spring steel rod, to ensure the deformation and reset function after stress. As shown in Figure 12 , Figure 13 , the initial inner side spacing of the two covering shovels 252 is W bf , which mainly functions to ensure the pre-seedling soil returning function after the seedling is planted, prevent the seedling from tilting forward, and thus affect the seedling lodging rate. If the value is too large, the soil covering will not be in place, and if the value is too small, the seedling will be scraped, that is, the successfully planted seedling is knocked down again by the covering shovel 252. Therefore, the value range of W bf is determined to be any size between 85mm and 105mm through practice. Similarly, the function of the two auxiliary elbows 253 is to gather soil after the seedling is planted, prevent the seedling from tilting backward, and the elbow structure feature can also timely right the left and right tilted seedlings. The spacing of the two auxiliary elbows 253 is also particularly important and cannot be too large or too small. In the embodiment, the spacing W ac of the two auxiliary elbows 253 is between 90mm and 100mm. In order to prevent the spacing between the auxiliary elbow 253 and the covering shovel 252 from being too large to cause secondary seedling clamping and too small to cause ineffective soil gathering, the spacing W sfc between the auxiliary elbow 253 and the covering shovel 252 is between 5mm and 15mm.

[0071] The planting monomer assembly 2 also includes a tamping device 26, which further includes a tamping wheel frame 261, a clamping plate frame 262, two fixed arms 263, two telescopic adjusting plates 264 and two tamping wheels 265, as shown in Figure 14As shown, the clamping plate frame 262 is symmetrically buckled on the upper end of the roller frame 261, and the clamping plate frame 262 and the roller frame 261 are connected by a fixed bolt; the upper end of the roller frame 261 is provided with a threaded hole, and the height adjusting handle 267 is screwed into the threaded hole; the lower end of the height adjusting handle 267 is a screw structure, and the upper part of the height adjusting handle 267 is positioned and installed on the clamping plate frame 262 by a gasket and a fastening screw. Two fixed arms 263 are symmetrically arranged on both sides of the roller frame 261, and a plurality of threaded holes are formed in the front end of the fixed arm 263. The front end of the fixed arm 263 can be directly inserted into the square slot hole at the lower end of the roller frame 261. Long holes are formed in the upper and lower surfaces of the slot hole. The roller frame 261 and the fixed arm 263 can be tightly locked and connected by bolts. At the same time, the locking position in the long hole can be adjusted, and the width of the fixed arm 263 can be adjusted.

[0072] The roller 265 is provided with an end shaft, the end shaft is hinged with a telescopic adjusting plate 264, the fixed arm 263 and the telescopic adjusting plate 264 are connected with an angle adjusting ear 266, the lower end of the telescopic adjusting plate 264 is provided with a long hole, the lower end of the fixed arm 263 is provided with two threaded holes, the telescopic adjusting plate 264 can be tightly connected with the threaded hole of the outer wall of the angle adjusting ear 266 through the long hole by a bolt, a horizontal long hole is formed on the surface of the angle adjusting ear 266, the upper end of the horizontal long hole can be tightly installed on the threaded hole of the lower end of the fixed arm 263 by a bolt, the surface of the angle adjusting ear 266 is provided with a threaded hole in the middle and the lower part, the threaded hole in the middle can be tightly installed on the lowermost threaded hole of the fixed arm 263 by a bolt, and the threaded hole in the lower part is tightly installed on the end face hole of the inner wall of the telescopic adjusting plate 264 by a bolt, so that the compaction angle of the roller 265 can be adjusted by loosening the bolts in the middle and upper long holes.

[0073] A scraper 268 is further arranged at the rear of the roller 265, the scraper 268 is a straight angle "L" type plate structure, the front end is provided with a sleeve structure, the sleeve is provided with a threaded hole, the sleeve can be sleeved and installed on the outer end shaft of the roller 265, and is tightly positioned by screwing the threaded hole of the sleeve by a screw, the outer side of the sleeve can be axially positioned by a snap spring or a pin, the rear end of the scraper 268 has a downward inclined bending plate structure, the bending plate is close to the outer surface of the roller 265 at the end and has a small gap. When forward traction is performed, the roller 265 can be naturally rotated under the action of soil surface friction and supporting force, the height adjusting handle 267 can be manually rotated to adjust the relative position of the fixed arm 263, the roller 265 and other fasteners and the rotating disc fixing frame 21, and then the height of the roller 265 and the soil compaction force can be changed. It should be noted that the roller 265 adopts a non-inflatable rubber wheel, which only uses the material and structure of the tire itself to realize the supporting and buffering and compaction performance, so as to ensure the stability and reliability of the compaction function.

[0074] In addition, in the embodiment of the basket duckbill type pineapple transplanter with the hole covering and pressing linkage function, the orientation of the traction suspension frame 4 relative to the whole machine is defined as "front", and the pineapple transplanter is connected to the tractor through the traction suspension frame 4. According to the common sense of field agricultural machinery, the rear end of the tractor is designed with three-point suspension drawbar, the three-point suspension frame of the traction suspension frame 4 is connected to the three-point suspension drawbar through hinging, and the length of the three-point suspension at the rear of the tractor is adjusted, so that the whole transplanter is adjusted to an inclined angle of high front and low back, i.e. a forward-leaning state, while ensuring that the rebound soil covering device 25 is placed about 50 mm below the soil and the pressing wheel 265 is completely attached to the soil surface. In addition, as shown in Figure 15 the hydraulic push rod 43 connected to the ditching and marking device 42 is connected to the hydraulic input joint at the rear of the tractor through a hydraulic pipe joint, so as to ensure smooth oil passage without oil leakage.

[0075] According to the number of rows of the machine type, in this embodiment, two rows are taken as an example, and in other embodiments, it can be single row, four rows, etc. The seedling operator stably sits on the seat 5, at this time, the seedling cradle 3 needs to be filled with standard pineapple seedlings 20. It should be noted that the standard pineapple seedlings 20 have a diameter of ≤130 mm, and the height of the pineapple seedlings 20 ranges from 250 mm to 350 mm, and unqualified pineapple seedlings 20 need to be trimmed to standard size according to this rule. The tractor driver starts the tractor and drives forward in the field planting area, keeping the working speed in the range of 0.5-1.5 km / h, after the whole machine transplanter is stably running, the seedling operator takes out the pineapple seedlings 20 from the seedling cradle 3 in turn and timely puts them into the hole duckbill assembly 23 running to the uppermost end, so as to ensure that each hole duckbill assembly 23 is filled with pineapple seedlings 20.

[0076] Then, under the action of the offset turntable mechanism 22, the sequential actions of the hole duckbill assembly 23, the convex contact device 24, the rebound soil covering device 25 and the pressing device 26 are linked, so as to realize the continuous actions of duckbill hole digging, hole filling, rebound soil covering, soil supporting and compaction, and thus the transplanter action of a single seedling is completed. In this embodiment, all the size ranges and mechanism connection modes are a set of strict linkage system, which ensures the mechanized continuous transplanter action and the pineapple field transplanter quality and reliability meeting the agronomic requirements. Finally, when the tractor driver needs to turn around for row changing operation after single row operation, the hydraulic system at the rear of the tractor needs to be controlled in advance, the hydraulic push rod 43 is opened and pushed to rotate the ditching and marking device 42 outward around the hinge point of the machine frame until the ditching disc sinks into the soil to a certain depth, so as to ensure that a significant ditch line is formed on the soil surface of the adjacent row outside during the transplanter operation, which is used as a reference for alignment with the other end of the ditching disc during row changing, so as to ensure the row spacing requirement of pineapple planting. After the transplanter operation is completed, the hydraulic system is controlled in reverse flow to retract the hydraulic push rod 43.

[0077] It should be noted that during the transplanting operation, due to the particularity of the size of the pineapple planting being larger than the traditional other operation seedlings, the rotational inertia of the offset turntable mechanism 22 is larger, which is easy to cause the rotational speed deviation, and affects the plant spacing variation coefficient after planting. Therefore, the brake pad 227 in the embodiment can effectively overcome the inertia problem of the large-size turntable, ensure the uniform speed requirement of relative rotation, and greatly improve the uniformity of planting. On the other hand, when encountering special situations in the field and needing to reverse, through the design of the driving pawl 134 inside the walking driving system 1 and the walking wheel 13, it can be ensured that the planting monomer assembly 2 will not rotate in reverse, and the safety of the parts is ensured.

[0078] The above only describes the preferred embodiments of the present application, and it should be noted that for ordinary skilled persons in the art, without departing from the technical principles of the present application, a number of improvements and replacements can be made, and these improvements and replacements should be considered as the protection scope of the present application.

Claims

1. A hanging basket duckbill type pineapple transplanter with the functions of hole digging, covering and pressing, characterized in that, The traction suspension frame, the walking driving system, the planting single assembly and the seedling bracket are arranged on the traction suspension frame, and the walking driving system is in transmission connection with the planting single assembly; The planting single assembly comprises a rotating disc fixing frame, a bias rotating disc mechanism, a plurality of hole-poking duckbill assemblies, a plurality of convex contact devices and a rebounding soil covering device, the bias rotating disc mechanism comprises front and rear rotating discs which are hinged to the front and rear positions of the rotating disc fixing frame, and the axes of the front and rear rotating discs are arranged in parallel and are in staggered positions; The hole-poking duckbill assemblies are hinged between the front and rear rotating discs, and a plurality of the hole-poking duckbill assemblies are arranged in a circumferential interval about the front or rear rotating disc; the convex contact devices are fixed to the front and rear rotating discs, and a plurality of the convex contact devices are arranged in a circumferential interval about the front or rear rotating disc; the convex contact devices are in top contact with the hole-poking duckbill assemblies to open the hole-poking duckbill assemblies when the hole-poking duckbill assemblies move to below the rotating disc, the hole-poking action is completed and the hole-poking duckbill assemblies start to pull out the hole mouth; The rebounding soil covering device is arranged on the lower side of the bias rotating disc mechanism, the rebounding soil covering device comprises two rebounding rods and two soil covering shovels, the two rebounding rods are arranged in parallel and in an interval, the two soil covering shovels are respectively mounted on the inner sides of the rebounding rods, and the soil covering shovels are arranged in correspondence with the hole-poking duckbill assemblies, the two side duckbills are separated from the soil covering shovels to reset the soil covering shovels when the hole-poking duckbill assemblies pull out the hole mouth, so that the soil covering shovels cover the soil again; The hole-poking duckbill assembly comprises a seedling cup base, two symmetrical open-close duckbills, a closing tension spring and two sleeve joint shaft heads, the front and rear parts of the seedling cup base are respectively provided with mounting shaft holes, the sleeve joint shaft heads are hinged between the mounting shaft holes and the front or rear rotating disc, the two symmetrical open-close duckbills are hingedly mounted on the lower end outer sides of the seedling cup base, and the closing tension spring is connected between the two symmetrical open-close duckbills to make the two symmetrical open-close duckbills in a closed state; The convex contact device comprises a convex contact seat base, a flange top block and a scale adjusting sheet, the convex contact seat base is fixedly connected with the inner wall of the front rotating disc or the inner wall of the rear rotating disc, a bearing is mounted on the convex contact seat base, and the sleeve joint shaft head is hinged in the bearing; the scale adjusting sheet is arranged on the upper surface of the flange top block, the lower end of the convex contact seat base is provided with a threaded hole, the flange top block is provided with a connecting long hole, and a fastening bolt is mounted between the threaded hole and the connecting long hole to adjust the distance between the lower surface of the flange top block and the center of the bearing of the convex contact seat base.

2. The hanging basket duckbill type pineapple transplanter with the hole digging, covering and pressing linkage function according to claim 1, characterized in that, The rotation centers of the front rotating disc and the rear rotating disc are O F and O B The two rotation centers are in the same horizontal line, and the distance between the two rotation centers is L1, which is between 150mm and 200mm. The radius of the front rotating disc and the rear rotating disc is L2, which is between 280mm and 330mm. The front rotating disc corresponds to the hinged center of the hole-punching duckbill assembly PF , the rear rotating disc corresponds to the hinged center of the hole-punching duckbill assembly PB , the line between the two hinged centers is O PF O PB , O PF O PB =L1; the vertical distance between the shaft center of the sleeve joint shaft head and the lower end of the symmetrical open-close duckbill is L3, L3 is between 200mm-250mm, and L3 is perpendicular to O PF O PB .

3. The hanging basket duckbill type pineapple transplanter with the hole digging, covering and pressing linkage function according to claim 2, characterized in that, The height of the rotation center of the front and rear rotating discs from the soil surface is H C , H C is between 550mm and 630mm, the planting depth of the hole-poking duckbill assembly is h P , h P is between 50mm and 120mm, and the plant spacing is any size between 300mm and 350mm; the longitudinal hole opening width of the hole-poking duckbill assembly after the hole-poking is W P , W P is less than the transverse width of the hole-poking duckbill assembly.

4. The hanging basket duckbill type pineapple transplanter with the hole digging, covering and pressing linkage function according to claim 3, characterized in that, The opening width of the symmetrical open-close duckbill is W op , W op is between 70mm and 110mm, the cross-sectional profile of the seedling cup base is square, circular or polygonal, the inscribed circle diameter of the seedling cup base is Sc, and Sc is between 100mm and 140mm; the height of the hole-punching duckbill assembly is H1, and H1 is between 250mm and 275mm.

5. The hanging basket duckbill type pineapple transplanter with the hole digging, covering and pressing linkage function according to claim 1, characterized in that, The initial distance between the inner sides of the two covering shovels is W bf , W bf is between 85mm and 105mm ac , W ac is between 90mm and 100mm sfc , W sfc is between 5mm and 15mm.

6. The hanging basket duckbill type pineapple transplanter with the hole digging, covering and pressing linkage function according to claim 1, characterized in that, One side of each of the two symmetrical open-close duckbills is connected with an extension arm structure, the distal ends of the two extension arm structures are respectively provided with rolling bearings, the lower edge of the flange top block is in a circular arc shape, and the flange top block is in rolling contact with the rolling bearings.

7. The hanging basket duckbill type pineapple transplanter with the hole digging, covering and pressing linkage function according to claim 5, characterized in that, The rebounding soil covering device further comprises a fixed connection bent plate, a resetting tension spring and two flow guide rods, the rebounding rods and the flow guide rods are fixed to the fixed connection bent plate, and the two rebounding rods and the two flow guide rods are symmetrically distributed. The side of the fixed curved plate is provided with an extended hanging ear, the planting monomer assembly is also provided with a shell hanging hole, the reset tension spring is connected between the extended hanging ear and the shell hanging hole, the curved corner of the covering shovel is downwardly inclined, and the rebound rod, the flow guide rod and the auxiliary elbow are all made of spring steel.

8. The hanging basket duckbill type pineapple transplanter with the hole digging, covering and pressing linkage function according to claim 1, characterized in that, The planting monomer assembly further comprises a tamping device, the tamping device further comprises a tamping wheel frame, a clamping plate frame, two fixed arms, two telescopic adjusting plates and two tamping wheels, the clamping plate frame is buckled to the upper end of the tamping wheel frame, fixed bolts are connected between the clamping plate frame and the tamping wheel frame, the two fixed arms are symmetrically arranged on the two sides of the tamping wheel frame, the tamping wheel is provided with an end shaft, the end shaft is hinged with a telescopic adjusting plate, and angle adjusting ears are connected between the fixed arms and the telescopic adjusting plate.

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