Semi-automatic tobacco transplanter and working method thereof

Abstract

The invention relates to a semi-automatic tobacco transplanter and a working method thereof.The semi-automatic tobacco transplanter comprises a moving vehicle and a seedling throwing mechanism, a planting mechanism and a soil covering mechanism which are arranged on the moving vehicle and sequentially arranged in the tobacco seedling conveying direction, and the planting mechanism comprises a rotatable rotating disc assembly and a plurality of duckbilled devices arranged on the rotating disc assembly at intervals; when the duckbilled devices rotate to the lowermost portion of the rotary disc assembly, the closed duckbilled devices are opened, and tobacco seedlings fall into holes while the holes are dug in the land. The device is reasonable in design, simple in structure and convenient to use, tobacco seedlings are thrown into the seedling throwing mechanism and are rotated to the lowermost portion of the rotating disc assembly through duckbilled devices of the planting mechanism by the seedling throwing mechanism, the duckbilled device rotating to the lowermost portion is partially inserted into soil and opened, holes are formed in the soil outside the duckbilled devices, meanwhile, the tobacco seedlings in the duckbilled devices fall into the holes, and the planting efficiency is improved. The soil covering mechanism covers the holes with soil, tobacco seedling transplanting work is completed, time and labor are saved, the labor intensity is greatly reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to a semi-automatic tobacco transplanter and a working method thereof. Background Art

[0002] Tobacco is a plant of the genus Nicotiana in the Solanaceae family. It is an annual or limited perennial herb with glandular hairs all over. The root is thick. The stem is 0.7-2 meters high and slightly lignified at the base. The leaves are oblong-lanceolate, lanceolate, oblong or ovate, with a gradually pointed apex and a gradually narrowed base until the stem is ear-shaped and semi-amplexicaulous. The inflorescence is terminal, conical, and multi-flowered; the pedicel is 5-20 mm long. The capsule is ovoid or oblong, about the same length as the persistent calyx. The seeds are round or broadly oblong, about 0.5 mm in diameter, and brown. Tobacco is a thermophilic crop and is sensitive to temperature. Different temperature conditions have a greater impact on the quality and yield of tobacco. The temperature requirements for high-quality tobacco during the growth period are lower in the early stage and higher in the later stage. It blooms and bears fruit in summer and autumn. It is native to South America and is widely cultivated in provinces and regions in northern and southern China. Transplanting is the key to the quality of tobacco, and there are high requirements for transplanting conditions. my country is still in its infancy in the field of transplanting. In the existing technology, tobacco planting has long been mostly done by manual planting, which is time-consuming and labor-intensive, resulting in high labor intensity, high cost and low efficiency. Summary of the invention

[0003] The present invention improves the above-mentioned problem, that is, the technical problem to be solved by the present invention is to provide a tobacco semi-automatic transplanter and a working method thereof, which are easy to use and highly efficient.

[0004] The present invention is constructed as follows: it includes a mobile vehicle and a seedling throwing mechanism, a planting mechanism and a soil covering mechanism which are arranged on the mobile vehicle and are arranged in sequence along the direction of tobacco seedling transportation. The planting mechanism includes a rotatable turntable assembly and a plurality of duckbills which are arranged at intervals on the turntable assembly. When the duckbills rotate to the bottom of the turntable assembly, the closed duckbills open, and the tobacco seedlings fall into the holes while holes are dug in the soil.

[0005] Furthermore, the turntable assembly includes a turntable shaft and two concentric plates arranged on the turntable shaft, the two concentric plates are connected via a flange sleeve, a plurality of brackets are circumferentially arranged on the edge of the concentric plates, the brackets corresponding to the two concentric plates respectively cooperate with the duckbill for rotation, guide wheels are symmetrically arranged above both sides of the duckbill, a guide body is arranged on the inner side of the bracket, a guide slide is formed on the outer side of the guide body, the front and rear sides of the guide slide are inclined surfaces, the guide wheel slides along the guide slide of the guide body to change the position of the guide wheel so as to open or close the two duckbill plates of the duckbill.

[0006] Furthermore, the duckbill device includes a seedling receiving bucket and a duckbill body arranged below the seedling receiving bucket, extension parts are arranged on both sides of the duckbill body, and the extension parts are rotatably matched with the bracket, duckbill plates are symmetrically arranged on both sides of the duckbill body, and the two duckbill plates form a closed shape, and a through hole is arranged in the middle of the duckbill body, the upper part of the through hole is connected with the seedling receiving bucket, and the lower part of the through hole is connected with the accommodating cavity formed by the closure of the two duckbill plates, the upper part of each duckbill plate is connected with the extension part of the duckbill body via a swing shaft, and a reset spring is arranged between the swing shafts on the two duckbill plates; a fixed sleeve is arranged in the extension part of the duckbill body, the swing shaft of the duckbill plate passes through the duckbill plate and the fixed sleeve, the swing shaft is fixed to the duckbill plate, and the swing shaft is rotatably matched with the fixed sleeve.

[0007] Furthermore, an eccentric support plate is arranged beside one of the concentric plates, a rotatable eccentric plate is arranged inside the eccentric support plate, the eccentric plate is connected to a bracket close to one side of the eccentric plate via a connecting rod, one end of the connecting rod is hinged to the eccentric plate, and the other end of the connecting rod is hinged to the bracket.

[0008] Furthermore, a roller is provided on the inner side of the eccentric support disk, a circular groove is provided in the middle of the eccentric disk, and the roller rolls in cooperation with the inner surface of the circular groove; the soil covering mechanism includes a soil covering bracket provided on the outer side of the eccentric support disk and extending to the front of the duckbill, and two soil covering wheels are symmetrically provided on the soil covering bracket, and the two soil covering wheels are inclined and in an inverted "eight" shape.

[0009] The gear box is provided with a first bevel gear and a second bevel gear, the first bevel gear and the second bevel gear being meshed with each other, the first bevel gear being coaxially mounted on the seedling investing shaft, the bevel gear shaft being mounted in the middle of the second bevel gear, a seedling releasing device is arranged on the upper end of the bevel gear shaft, a rotatable seedling investing disk is arranged on the upper end of the seedling releasing device, the bevel gear shaft upwardly penetrates the seedling releasing device and is connected with the seedling investing disk, a plurality of seedling investing tubes are arranged circumferentially on the seedling investing disk, the seedling investing tube has a seedling investing opening above the seedling investing tube, and a seedling outlet of the seedling investing tube is arranged below the seedling investing tube, a seedling guide tube is arranged below one side of the seedling releasing device, a feeding opening at the upper end of the seedling guide tube is aligned and communicated with one of the seedling investing tubes, a feeding opening at the lower end of the seedling guide tube is aligned and communicated with a seedling receiving bucket of the duckbill device, and the seedling outlet of the seedling investing tube that has not been rotated to the position of the seedling guide tube is closed by the upper surface of the seedling releasing device.

[0010] Furthermore, a synchronous position adjustment component is arranged between the planting mechanism and the seedling throwing mechanism, and the synchronous position adjustment component includes a front slide rail fixed to the front of the mobile vehicle and a rear slide rail fixed to the rear of the mobile vehicle, a screw rod is arranged below the front slide rail, a ball screw nut seat is sleeved on the screw rod, the ball screw nut seat cooperates with the screw rod thread, the top of the ball screw nut seat is fixed to a front slider sleeved on the front slide rail, the bottom of the ball screw nut seat is connected to the planting mechanism via a connecting rod, a rear slider is arranged below the seedling throwing mechanism, the rear slider slidably cooperates with the rear slide rail, and the rear slider is connected to the front slider via a slider connecting plate; both ends of the screw rod are respectively connected to the screw rod bearing seats arranged on the mobile vehicle, and a hand wheel is arranged at the end of the screw rod passing through one side of the screw rod bearing seat.

[0011] Furthermore, a traveling wheel assembly is provided at the rear of the mobile vehicle, and the traveling wheel assembly includes two traveling wheels and a traveling shaft arranged between the two traveling wheels; a driving double sprocket is provided in the middle of the traveling shaft, an intermediate shaft is provided in the middle of the mobile vehicle, a driven double sprocket is provided in the middle of the intermediate shaft, an adjusting sprocket is provided between the driving double sprocket and the driven double sprocket, and a driving chain is sleeved between the driving double sprocket, the driven double sprocket and the adjusting sprocket; the adjusting sprocket is installed on an adjusting bracket, an adjusting slot is provided on the adjusting bracket, an adjusting single sprocket is provided in the adjusting slot, an adjusting wheel shaft is provided in the middle of the adjusting single sprocket, and the adjusting The section wheel shaft extends into the adjusting groove, and at least two adjusting nuts are arranged on the adjusting wheel shaft, and the two adjusting nuts are respectively located at the front and rear of the adjusting groove, and the adjusting nuts are threadedly matched with the adjusting wheel shaft; a first single-row sprocket A is installed on the intermediate shaft, and a second single-row sprocket A is installed on the turntable shaft of the planting mechanism, and a chain A is sleeved between the first single-row sprocket A and the second single-row sprocket A; a first single-row sprocket B is installed on the intermediate shaft, and a second single-row sprocket B is installed on the seedling planting shaft of the seedling planting mechanism, a single-row guiding sprocket is installed below the second single-row sprocket B, and a chain B is sleeved between the first single-row sprocket B, the second single-row sprocket B, and the single-row guiding sprocket.

[0012] Furthermore, the mobile vehicle is provided with a tray for placing tobacco seedlings and a seat for sitting.

[0013] Furthermore, the working method of the semi-automatic tobacco transplanter includes the following steps: (1) placing tobacco seedlings into a seedling throwing tube of a seedling throwing mechanism, the seedling throwing tube of the seedling throwing mechanism rotates to drive the tobacco seedlings to move to the seedling guide tube position of the seedling placing device of the seedling throwing mechanism, and the tobacco seedlings fall into the seedling receiving bucket of the duckbill device through the seedling guide tube; (2) the turntable assembly rotates to rotate the duckbill device located at the top of the turntable assembly to the bottom of the turntable assembly. During the process of the duckbill device rotating with the turntable assembly, the duckbill device always remains in a vertical state, and the guide body inside the bracket of the turntable assembly rotates with the turntable assembly, and the position of the guide body relative to the duckbill device changes. When the duckbill device rotates When the turntable assembly moves to the bottom, the duckbill is partially inserted into the soil, and the guide wheels on both sides of the duckbill are in contact with the guide body of the turntable assembly. As the turntable assembly rotates further, the guide wheels move along the guide slides of the guide body to the widest position of the guide body. As the guide wheels are squeezed by the guide body, their positions change. The guide wheels drive the two duckbill plates of the duckbill to swing open along the hinge points. While the duckbill makes a hole in the soil, the tobacco seedlings fall into the hole; (3) The covering wheels of the soil covering mechanism cover the hole with the tobacco seedlings; (4) During the movement of the mobile vehicle, the seedling throwing mechanism, the planting mechanism and the soil covering mechanism work synchronously.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the device has a simple structure, a reasonable design, saves time and effort, is easy to use, is conducive to improving the transplanting of tobacco seedlings, and reduces labor intensity. The operator only needs to sit on the seat of the transplanter; during the movement of the transplanter, the walking wheel assembly rotates to drive the seedling throwing mechanism, the planting mechanism, and the soil covering mechanism to work synchronously. The seedling throwing mechanism is driven by the rotation of the seedling throwing shaft, and the first bevel gear and the second bevel gear of the seedling throwing mechanism mesh with each other, so that the tobacco seedlings in the seedling throwing tube are rotated to the position of the seedling guide tube in turn, and fall into the seedling receiving bucket of the duckbill device through the seedling guide tube. The turntable assembly of the planting mechanism rotates along the turntable shaft, and the duckbill device moves with the turntable assembly. During the rotation process, the duckbill always remains in a vertical state, and the guide body on the inner side of the bracket of the turntable assembly changes with the rotation of the turntable assembly, and the position of the guide body relative to the duckbill changes. When the duckbill rotates to the bottom of the turntable assembly, the duckbill is partially inserted into the soil, and the guide wheels on both sides of the duckbill are in contact with the guide body of the turntable assembly. With the further rotation of the turntable assembly, the guide wheels move along the guide slide of the guide body to the widest position of the guide body. Since the guide wheels are squeezed by the guide body and their position changes, the guide wheels drive the two duckbill plates of the duckbill to swing open along the hinge point. While the duckbill makes a hole in the soil, the tobacco seedlings fall into the hole, and the soil covering mechanism covers the hole with soil to complete the transplanting of the tobacco seedlings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The embodiment of the present invention is a three-dimensional Figure 1 ; Figure 2The embodiment of the present invention is a three-dimensional Figure 2 ; Figure 3 It is a schematic diagram of a local structure of an embodiment of the present invention; Figure 4 Schematic diagram of the position structure of the planting mechanism according to the embodiment of the present invention Figure 1 ; Figure 5 Schematic diagram of the position structure of the planting mechanism according to the embodiment of the present invention Figure 2 ; Figure 6 This is a schematic diagram of the structure of the planting mechanism and the seedling throwing mechanism according to an embodiment of the present invention; Figure 7 A partial schematic diagram of the planting mechanism and seedling throwing mechanism of the embodiment of the present invention Figure 1 ; Figure 8 A partial schematic diagram of the planting mechanism and seedling throwing mechanism of the embodiment of the present invention Figure 2 ; Fig. 9 The structure of the planting mechanism of the present invention is shown in FIG. Figure 1 ; Fig.10 The structure of the planting mechanism of the present invention is shown in FIG. Figure 2 ; Fig.11 The structure of the planting mechanism of the present invention is shown in FIG. Figure 3 ; Fig.12 This is a cross-sectional view of the planting mechanism of the embodiment of the present invention Figure 1 ; Fig.13 This is a cross-sectional view of the planting mechanism of the embodiment of the present invention Figure 2 ; Fig.14 It is a partial schematic diagram of the planting mechanism of an embodiment of the present invention; Fig.15 An exploded view of a duckbill device of a planting mechanism according to an embodiment of the present invention; Fig.16 It is a schematic diagram of the concentric disk and flange sleeve structure of the turntable assembly according to an embodiment of the present invention; Fig.17 This is a schematic diagram of a seedling planting mechanism and a synchronous position adjustment component according to an embodiment of the present invention; Fig.18 This is a structural schematic diagram of a seedling planting mechanism according to an embodiment of the present invention; Fig.19 The bottom structure of the embodiment of the present invention is shown in FIG. Figure 1 ; Fig. 20 The bottom structure of the embodiment of the present invention is shown in FIG. Figure 2 . DETAILED DESCRIPTION

[0016] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Example: Figures 1 to 20 As shown, in this embodiment, a semi-automatic tobacco transplanter is provided, including a mobile vehicle 1 and a seedling throwing mechanism 2, a planting mechanism 3 and a soil covering mechanism 4 which are arranged on the mobile vehicle and are arranged in sequence along the direction of tobacco seedling transportation. The planting mechanism 3 includes a rotatable turntable assembly 31 and a plurality of duckbills 32 which are arranged on the turntable assembly at intervals. When the duckbills rotate to the bottom of the turntable assembly, the lower part of the duckbills is inserted into the soil, and the closed duckbills are opened, and the tobacco seedlings fall into the holes while holes are dug in the soil.

[0018] In the embodiment of the present invention, the turntable assembly 31 includes a turntable shaft 311 and two concentric disks 312 arranged on the turntable shaft, the two concentric disks are connected via a flange sleeve 313, the two ends of the flange sleeve are respectively fixed to the two concentric disks, and a avoidance hole is arranged in the middle of the flange sleeve for sleeve-mounting the turntable shaft. A plurality of brackets 314 are circumferentially arranged on the edge of the concentric disk, and the brackets corresponding to the two concentric disks are respectively rotatably matched with the duckbill, and the extension of the duckbill is connected to the bracket via a bearing A, and the bearing A can be arranged inside the bracket; guide wheels 315 are symmetrically arranged above both sides of the duckbill, and a guide body 316 is arranged on the inner side of the bracket. The guide wheels are respectively matched with the guide bodies of the brackets on the two concentric disks. The guide bodies are arc-shaped, and the outer side surfaces of the guide bodies form guide slides 317. In order to facilitate the guide wheels of the duckbill device to move better along the path of the guide slides, the front and back of the guide body are inclined surfaces, and the front of the guide body is smoothly transitioned to the side of the guide body, and the back of the guide body is smoothly transitioned to the side of the guide body. The front, side and back of the guide body form guide slides to facilitate the guide body to roll along the guide slides. The guide wheel slides along the guide slide of the guide body to change the position of the guide wheel, so that the two duckbill plates of the duckbill device can be opened or closed along the swing axis.

[0019] The two ends of the above-mentioned turntable shaft are connected to the frame of the mobile vehicle via bearings B; the cross-section of the above-mentioned turntable shaft can be a regular hexagon, and circular pins are provided at both ends of the turntable shaft, and the circular pins cooperate with the inner ring of the bearing B; the regular hexagonal turntable shaft can drive the planting mechanism to rotate, and the planting mechanism can also slide along the length direction of the turntable shaft; of course, the cross-section of the avoidance hole in the middle of the flange sleeve can also be a regular hexagon, and the avoidance hole of the flange sleeve can be slightly larger than the turntable shaft, so that the flange sleeve of the turntable assembly can move along the length direction of the turntable shaft, and can also rotate with the turntable shaft.

[0020] The guide wheel of the duckbill moves along the front of the guide body to the side of the guide body, moves a distance on the side of the guide body, and then moves out from the side of the guide body along the back of the guide body, so that the guide wheel is separated from the guide body, the guide wheel is reset, and the two duckbill plates of the duckbill are closed again under the elastic force of the reset spring; the front of the guide body is an inclined plane inclined from the front lower to the rear upper, and the back of the guide body is an inclined plane inclined from the front upper to the rear lower, and the front and back of the guide body are inclined in opposite directions; since the guide body has a certain variable width, when the guide wheel moves along the guide body, it is equivalent to the guide wheel being squeezed and pushed, so that the upper part of the duckbill plate of the duckbill rotates inward along the hinge point, and the lower part of the duckbill plate rotates outward along the hinge point to open.

[0021] In the embodiment of the present invention, an eccentric support disk 318 is arranged on the side of one of the concentric disks, and an eccentric avoidance hole is arranged in the middle of the eccentric support disk. The diameter of the eccentric avoidance hole is slightly larger than the turntable shaft for avoiding the turntable shaft; a rotatable eccentric disk 319 is arranged on the inner side of the eccentric support disk, and the eccentric disk can rotate with one of the concentric disks. The eccentric disk is connected to the bracket close to one side of the eccentric disk via a connecting rod 320, one end of the connecting rod is hinged to the eccentric disk, and the other end of the connecting rod is hinged to the bracket.

[0022] The connecting rod 320 comprises a rod body and a ring body, wherein the ring body is sleeved outside the turntable shaft and fixed to the eccentric support plate of the turntable assembly; the concentric plate and the eccentric plate of the turntable assembly are also provided with holes in the middle for avoiding the turntable shaft.

[0023] In the embodiment of the present invention, in order to improve the rotation stability of the concentric disk, a rotatable roller 3181 is provided on the inner side of the eccentric support disk 318, and a circular groove 3182 is provided in the middle of the eccentric disk, and the roller rolls with the inner surface of the circular groove.

[0024] In the embodiment of the present invention, the duckbill device 32 includes a seedling receiving bucket 321 and a duckbill body 322 arranged below the seedling receiving bucket, extension parts 3221 are arranged on both sides of the duckbill body, and the extension parts are rotatably matched with the bracket through bearings A, duckbill plates 323 are symmetrically arranged on both sides of the duckbill body, and the two duckbill plates are initially closed, a through hole is arranged in the middle of the duckbill body, the upper part of the through hole is connected to the seedling outlet of the seedling receiving bucket, and the lower part of the through hole is connected to the accommodating cavity formed by the closure of the two duckbill plates, the upper part of each duckbill plate is hinged to the extension part of the duckbill body through a swing shaft 324, and a reset spring 325 is arranged between the swing shafts on the two duckbill plates; a fixed sleeve is arranged in the extension part of the duckbill body, the swing shaft of the duckbill plate passes through the duckbill plate and the fixed sleeve, the swing shaft is fixed to the duckbill plate, and the swing shaft and the fixed sleeve are rotatably matched, that is, when the swing shaft rotates, the swing shaft can drive the duckbill plate to rotate together, and the swing shaft can rotate in the fixed sleeve.

[0025] The seedling receiving bucket is provided with a seedling throwing inlet at the top and a seedling throwing outlet at the bottom.

[0026] One of the two duckbill plates is provided with grooves 3231 on the front and rear upper parts, and the other duckbill plate is provided with protrusions 3232 on the front and rear upper parts. The protrusions match with the grooves. When the two duckbill plates are closed, the protrusion of one duckbill plate is located in the groove of the other duckbill plate.

[0027] In an embodiment of the present invention, in order to cover the tobacco seedlings placed in the cave with soil, the soil covering mechanism 4 includes a soil covering bracket 41 arranged on the outside of the eccentric support plate and extending to the front of the duckbill, and two soil covering wheels 42 are symmetrically arranged on the soil covering bracket, and the two soil covering wheels are inclined and in an inverted "eight" shape; the soil covering mechanism is arranged corresponding to the number of planting mechanisms. For example, if there are four planting mechanisms, four soil covering mechanisms are also arranged accordingly.

[0028] In the embodiment of the present invention, the seedling throwing mechanism 2 includes a rotatable seedling throwing shaft 201 and a gear box 202 arranged on the seedling throwing shaft, a first bevel gear 203 and a second bevel gear 204 are arranged inside the gear box, the first bevel gear and the second bevel gear are meshed, the first bevel gear is coaxially installed on the seedling throwing shaft, a bevel gear shaft 210 is installed in the middle of the second bevel gear, the second bevel gear is fixed to the bevel gear shaft, the second bevel gear and the gear box are rotationally matched, for example, a bearing E is arranged on the upper part of the gear box, the second bevel gear and the bearing E are rotationally matched, a seedling releaser 205 is arranged on the upper end of the bevel gear shaft, a rotatable seedling throwing tray 206 is arranged above the seedling releaser, and the bevel gear shaft The seedling releaser is connected with the seedling tray by passing through the seedling releaser upwards. The seedling tray is provided with a plurality of seedling release tubes 207 in the circumference. The seedling release port is located above the seedling release tube, and the seedling outlet of the seedling release tube is located below the seedling release tube. A seedling guide tube 208 is provided below one side of the seedling releaser. The seedling releaser and the seedling guide tube are connected via a connecting port 209. The connecting port is provided at one side of the seedling releaser. The feed port at the upper end of the seedling guide tube is aligned and connected with one of the seedling release tubes, and the discharge port at the lower end of the seedling guide tube is aligned and connected with the seedling receiving bucket of the duckbill device. The seedling outlet of the seedling release tube that has not been rotated to the seedling guide tube position is closed by the upper surface of the seedling releaser. When the seedling release tube is rotated to the seedling guide tube position, the tobacco seedlings in the seedling release tube can fall into the seedling receiving bucket of the duckbill device through the connecting port of the seedling releaser and the seedling guide tube.

[0029] Similarly, the cross-section of the seedling planting shaft is a regular hexagon, and the middle part of the first bevel gear on the seedling planting shaft is also provided with hexagonal deformation holes for avoiding the seedling planting shaft. The hexagonal hole is slightly larger than the seedling planting shaft, so that the first bevel gear can move along the length direction of the seedling planting shaft. At the same time, the rotation of the seedling planting shaft can also drive the first bevel gear to rotate.

[0030] The two ends of the above-mentioned seedling planting shaft are connected to the frame of the mobile vehicle via bearings C; the first bevel gear is connected to the gear box via bearings F.

[0031] In the embodiment of the present invention, a synchronous position adjustment component 5 is arranged between the planting mechanism and the seedling throwing mechanism, and the synchronous position adjustment component includes a front slide rail 501 fixed to the front of the mobile vehicle and a rear slide rail 502 fixed to the rear of the mobile vehicle, a screw rod 503 is arranged below the front slide rail, and support seats 504 are arranged at both ends of the front slide rail, and a bearing D is arranged in the support seat, and the screw rod is connected and rotatably matched with the bearing D, and a ball screw nut seat 505 that can move along the screw rod is sleeved on the screw rod, and the ball screw nut seat cooperates with the screw rod thread, and the ball screw nut seat is above It is fixed to the front slider 506 mounted on the front slide rail, and the front slider can slide along the front slide rail. The bottom of the ball screw nut seat is connected to the planting mechanism via a connecting rod 507, and the connecting rod is connected to the eccentric support plate of the turntable assembly; a rear slider 508 is arranged under the seedling planting mechanism, and the gear box of the seedling planting mechanism is fixed to the rear slider, the rear slider is slidably matched with the rear slide rail 502, and the rear slider is connected to the front slider via a slider connecting plate 509; the two ends of the screw are respectively connected to the screw bearing seats arranged on the moving vehicle, and a handwheel 510 is arranged at the end of the screw that passes through one side of the screw bearing seat.

[0032] When it is necessary to synchronously adjust the lateral position of the turntable assembly and the seedling-dropping mechanism, the hand wheel is turned to drive the screw rod to rotate, and the screw rod drives the ball screw nut seat to move along the length direction of the screw rod, thereby driving the planting mechanism to move left and right along the length direction of the turntable shaft through the connecting rod; when the screw rod bearing seat moves along the screw rod, the front slider also moves along the front slide rail, and the front slider drives the rear slider to move along the rear slide rail through the slider connecting plate, thereby driving the seedling-dropping mechanism to move left and right synchronously.

[0033] In the embodiment of the present invention, a travel wheel assembly 6 is provided at the rear of the mobile vehicle, and the travel wheel assembly includes two travel wheels 601 and a travel shaft 602 arranged between the two travel wheels; a driving double sprocket 603 is provided in the middle of the travel shaft, an intermediate shaft 604 is provided in the middle of the mobile vehicle, a driven double sprocket 605 is provided in the middle of the intermediate shaft, an adjusting sprocket 606 is provided between the driving double sprocket and the driven double sprocket, and a driving chain 607 is sleeved between the driving double sprocket, the driven double sprocket and the adjusting sprocket; the adjusting sprocket is installed on an adjusting bracket 608, an adjusting groove 609 is provided on the adjusting bracket, an adjusting single sprocket 610 is provided in the adjusting groove, an adjusting wheel shaft 611 is provided in the middle of the adjusting single sprocket, the adjusting wheel shaft extends into the adjusting groove, and at least two adjusting nuts 612 are provided on the adjusting wheel shaft, the two adjusting nuts are respectively located at the front and rear of the adjusting groove, and the adjusting nuts are threadedly matched with the adjusting wheel shaft; A first single-row sprocket A613 is installed on the intermediate shaft, a second single-row sprocket A614 is installed on the turntable shaft of the planting mechanism, a chain A615 is sleeved between the first single-row sprocket A and the second single-row sprocket A. Of course, for the sake of rotation stability, two second single-row sprockets A can be provided, which are respectively arranged on the left and right parts of the turntable shaft, and two corresponding first single-row sprockets A and chains A are also provided; a first single-row sprocket B616 is installed on the intermediate shaft, a second single-row sprocket B617 is installed on the seedling planting shaft of the seedling planting mechanism, a single-row guiding sprocket 618 is installed below the second single-row sprocket B, and a chain B619 is sleeved between the first single-row sprocket B, the second single-row sprocket B and the single-row guiding sprocket.

[0034] When the mobile vehicle is dragged, the two walking wheels drive the walking shaft to rotate, and drive the active double sprocket on the walking shaft to rotate, and the active double sprocket drives the adjusting sprocket, the intermediate shaft, and the driven double sprocket to rotate through the driving chain, and drives the first single-row sprocket A on the intermediate shaft to rotate, and the first single-row sprocket A drives the second single-row sprocket A to rotate through chain A, thereby driving the turntable shaft of the planting mechanism to rotate, and driving the turntable assembly to rotate 360 ​​degrees, so that the duckbill at the bottom of the turntable assembly is inserted out of the cave and the tobacco seedlings are placed in the cave, and the rotation of the intermediate shaft simultaneously drives the first single-row sprocket B to rotate, and drives the second single-row sprocket B to rotate through chain B, thereby driving the seedling throwing shaft of the seedling throwing mechanism to rotate, thereby driving the seedling throwing mechanism to rotate, and driving the seedling throwing disk of the seedling throwing mechanism to rotate, and the seedling throwing work is carried out into the planting mechanism.

[0035] The above-mentioned seedling throwing mechanism and planting mechanism are synchronously driven.

[0036] In the embodiment of the present invention, the mobile vehicle is provided with a tray 7 for placing tobacco seedlings, and a tobacco seedling plug tray with tobacco seedlings can be placed on the tray to facilitate seedling placement into the seedling placement mechanism.

[0037] In the embodiment of the present invention, a seat 8 is provided on the mobile vehicle for operators to sit and perform work.

[0038] In the embodiment of the present invention, the transplanter can be towed by other driving sources, such as a tractor.

[0039] Of course, the above-mentioned planting mechanisms can be provided in plurality, and the number of seedling-dropping mechanisms corresponding to the number of planting mechanisms can also be provided in plurality; the number of planting mechanisms and seedling-dropping mechanisms is the same, one planting mechanism corresponds to one seedling-dropping mechanism, adjacent planting mechanisms can be arranged at intervals, and the seedling-dropping mechanisms can also be arranged at intervals.

[0040] In the embodiment of the present invention, the working steps are as follows: (1) the operator sits on the seat of the transplanter; (2) the transplanter is dragged, and the walking wheel assembly rotates to drive the seedling throwing mechanism, the planting mechanism, and the soil covering mechanism to rotate synchronously. Under the rotation drive of the seedling throwing shaft, the seedling throwing tube of the seedling throwing mechanism rotates 360 degrees relative to the seedling releaser through the meshing action of the first bevel gear and the second bevel gear, so that the tobacco seedlings in the seedling throwing tube are rotated to a seedling guide tube position in turn, and enter the seedling receiving bucket of the duckbill device through the seedling guide tube. The turntable assembly of the planting mechanism rotates 360 degrees along the turntable shaft, and drives the rotating assembly to rotate to the duckbill device at the bottom to dig a cave and let the tobacco seedlings fall into the cave. The soil covering mechanism is used to cover the cave with soil; (3) Specifically, the operator puts the tobacco seedlings into the seedling throwing tube of the seedling throwing mechanism, and the seedling throwing tube of the seedling throwing mechanism rotates to drive the tobacco seedlings to move to the seedling guide tube position of the seedling releaser of the seedling throwing mechanism, and the tobacco seedlings fall into the duckbill device through the seedling guide tube. The seedling receiving bucket is placed in the seedling receiving bucket; (4) the turntable assembly of the planting mechanism rotates, and the duckbill located at the top of the turntable assembly is rotated to the bottom of the turntable assembly. During the process of the duckbill rotating with the turntable assembly, the duckbill always remains in a vertical state, and the guide body on the inner side of the bracket of the turntable assembly rotates with the turntable assembly, and the position of the guide body relative to the duckbill changes. When the duckbill rotates to the bottom of the turntable assembly, the duckbill is partially inserted into the soil, and the guide wheels on both sides of the duckbill contact the guide body of the turntable assembly. As the turntable assembly rotates further, the guide wheels move along the guide slide of the guide body to the widest position of the guide body. Since the guide wheels are squeezed by the guide body and their position changes, the guide wheels drive the two duckbill plates of the duckbill to swing open along the hinge point. At the same time, the duckbill makes a hole in the soil, and the tobacco seedlings fall into the hole; (5) The soil covering wheels of the soil covering mechanism cover the hole where the tobacco seedlings are placed with soil, completing the transplanting of the tobacco seedlings.

[0041] It is worth noting here that during the movement of the mobile vehicle, the traveling wheel assembly, the seedling throwing mechanism, the planting mechanism and the soil covering mechanism work synchronously. Unless otherwise stated, any technical solution disclosed in the present invention disclosed above, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range, and any technician in the field should understand that the preferred numerical range is only a numerical value with a more obvious technical effect or representative value among many implementable numerical values. Since there are too many numerical values ​​to be exhaustive, the present invention discloses some numerical values ​​to illustrate the technical solution of the present invention, and the numerical values ​​listed above should not constitute a limitation on the scope of protection of the present invention.

[0042] At the same time, if the above-mentioned invention discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except when it is obviously impossible to use an one-piece molding process).

[0043] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in the present invention include states or shapes that are approximate, similar, or close to them.

[0044] Any component provided by the present invention may be assembled from a plurality of separate components, or may be a separate component manufactured by an integral forming process.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A semi-automatic tobacco transplanter, characterized in that: It includes a mobile vehicle and a seedling throwing mechanism, a planting mechanism and a soil covering mechanism which are arranged on the mobile vehicle and are arranged in sequence along the direction of tobacco seedling transportation. The planting mechanism includes a rotatable turntable assembly and a plurality of duckbills which are arranged on the turntable assembly at intervals. When the duckbills rotate to the bottom of the turntable assembly, the closed duckbills open, and the tobacco seedlings fall into the holes while holes are dug in the soil.

2. The semi-automatic tobacco transplanter according to claim 1, characterized in that: The turntable assembly includes a turntable shaft and two concentric plates arranged on the turntable shaft, the two concentric plates are connected via a flange sleeve, a plurality of brackets are circumferentially arranged on the edge of the concentric plates, the brackets corresponding to the two concentric plates respectively cooperate with the duckbill for rotation, guide wheels are symmetrically arranged above both sides of the duckbill, a guide body is arranged on the inner side of the bracket, a guide slide is formed on the outer side of the guide body, the front and rear sides of the guide slide are inclined, the guide wheel slides along the guide slide of the guide body to change the position of the guide wheel so that the two duckbill plates of the duckbill are opened or closed.

3. The semi-automatic tobacco transplanter according to claim 2, characterized in that: The duckbill device includes a seedling receiving bucket and a duckbill body arranged below the seedling receiving bucket, extension parts are arranged on both sides of the duckbill body, and the extension parts are rotatably matched with the bracket, duckbill plates are symmetrically arranged on both sides of the duckbill body, and the two duckbill plates form a closed shape, and a through hole is arranged in the middle of the duckbill body, the upper part of the through hole is connected with the seedling receiving bucket, and the lower part of the through hole is connected with the accommodating cavity formed by the closure of the two duckbill plates, the upper part of each duckbill plate is connected with the extension part of the duckbill body via a swing shaft, and a reset spring is arranged between the swing shafts on the two duckbill plates; a fixed sleeve is arranged in the extension part of the duckbill body, the swing shaft of the duckbill plate passes through the duckbill plate and the fixed sleeve, the swing shaft is fixed to the duckbill plate, and the swing shaft is rotatably matched with the fixed sleeve.

4. The semi-automatic tobacco transplanter according to claim 2, characterized in that: An eccentric support disk is arranged beside one of the concentric disks, a rotatable eccentric disk is arranged inside the eccentric support disk, the eccentric disk is connected to a bracket close to one side of the eccentric disk via a connecting rod, one end of the connecting rod is hinged to the eccentric disk, and the other end of the connecting rod is hinged to the bracket.

5. The semi-automatic tobacco transplanter according to claim 4, characterized in that: A roller is arranged on the inner side of the eccentric support disk, a circular groove is arranged in the middle of the eccentric disk, and the roller rolls in cooperation with the inner surface of the circular groove; the soil covering mechanism comprises a soil covering bracket arranged on the outer side of the eccentric support disk and extending to the front of the duckbill, and two soil covering wheels are symmetrically arranged on the soil covering bracket, and the two soil covering wheels are arranged obliquely and in an inverted "eight" shape.

6. The semi-automatic tobacco transplanter according to claim 1, characterized in that: The gear mechanism comprises a rotatable seedling throwing shaft and a gear box arranged on the seedling throwing shaft, the gear box is provided with a first bevel gear inside, the first bevel gear and the second bevel gear meshing with each other, the first bevel gear is coaxially installed on the seedling throwing shaft, and the middle of the second bevel gear is installed with a bevel gear shaft, a seedling releasing device is provided on the upper end of the bevel gear shaft, and a rotatable seedling throwing disk is provided above the seedling releasing device, the bevel gear shaft passes through the seedling releasing device and is connected with the seedling throwing disk, and a plurality of seedling throwing tubes are circumferentially arranged on the seedling throwing disk, the seedling throwing tube has a seedling throwing opening above the seedling throwing tube, and a seedling outlet of the seedling throwing tube is provided below the seedling throwing tube, a seedling guide tube is provided below one side of the seedling releasing device, a feeding opening at the upper end of the seedling guide tube is aligned and communicated with one of the seedling throwing tubes, and a discharging opening at the lower end of the seedling guide tube is aligned and communicated with the seedling receiving bucket of the duckbill device, and the seedling outlet of the seedling throwing tube that has not been rotated to the seedling guide tube position is closed by the upper surface of the seedling releasing device.

7. The semi-automatic tobacco transplanter according to claim 1, characterized in that: A synchronous position adjustment component is arranged between the planting mechanism and the seedling throwing mechanism, and the synchronous position adjustment component includes a front slide rail fixed to the front of the mobile vehicle and a rear slide rail fixed to the rear of the mobile vehicle, a screw rod is arranged below the front slide rail, a ball screw nut seat is sleeved on the screw rod, the ball screw nut seat cooperates with the screw rod thread, the top of the ball screw nut seat is fixed to a front slider sleeved on the front slide rail, the bottom of the ball screw nut seat is connected to the planting mechanism via a connecting rod, a rear slider is arranged below the seedling throwing mechanism, the rear slider slidably cooperates with the rear slide rail, and the rear slider is connected to the front slider via a slider connecting plate; both ends of the screw rod are respectively connected to the screw rod bearing seats arranged on the mobile vehicle, and a hand wheel is arranged at the end of the screw rod that passes through one side of the screw rod bearing seat.

8. The semi-automatic tobacco transplanter according to claim 1, characterized in that: A traveling wheel assembly is provided at the rear of the mobile vehicle, and the traveling wheel assembly includes two traveling wheels and a traveling shaft arranged between the two traveling wheels; a driving double sprocket is provided in the middle of the traveling shaft, an intermediate shaft is provided in the middle of the mobile vehicle, a driven double sprocket is provided in the middle of the intermediate shaft, an adjusting sprocket is provided between the driving double sprocket and the driven double sprocket, and a driving chain is sleeved between the driving double sprocket, the driven double sprocket and the adjusting sprocket; the adjusting sprocket is installed on an adjusting bracket, an adjusting groove is provided on the adjusting bracket, an adjusting single sprocket is provided in the adjusting groove, an adjusting wheel shaft is provided in the middle of the adjusting single sprocket, and the adjusting wheel shaft Extending into the adjustment groove, at least two adjustment nuts are arranged on the adjustment wheel shaft, the two adjustment nuts are respectively located at the front and rear of the adjustment groove, and the adjustment nuts are threadedly matched with the adjustment wheel shaft; a first single-row sprocket A is installed on the intermediate shaft, a second single-row sprocket A is installed on the turntable shaft of the planting mechanism, and a chain A is sleeved between the first single-row sprocket A and the second single-row sprocket A; a first single-row sprocket B is installed on the intermediate shaft, a second single-row sprocket B is installed on the seedling planting shaft of the seedling planting mechanism, a single-row guiding sprocket is installed below the second single-row sprocket B, and a chain B is sleeved between the first single-row sprocket B, the second single-row sprocket B, and the single-row guiding sprocket.

9. The semi-automatic tobacco transplanter according to claim 1, characterized in that: The mobile vehicle is provided with a tray for placing tobacco seedlings and a seat for sitting.

10. A working method using the semi-automatic tobacco transplanter according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: (1) placing tobacco seedlings into a seedling throwing tube of a seedling throwing mechanism, wherein the seedling throwing tube of the seedling throwing mechanism rotates to drive the tobacco seedlings to move to the seedling guide tube position of the seedling placing device of the seedling throwing mechanism, and the tobacco seedlings fall into the seedling receiving bucket of the duckbill device through the seedling guide tube; (2) rotating the turntable assembly, rotating the duckbill device located at the top of the turntable assembly to the bottom of the turntable assembly, and in the process of the duckbill device rotating with the turntable assembly, the duckbill device always remains in a vertical state, and the guide body inside the bracket of the turntable assembly rotates with the turntable assembly, and the position of the guide body relative to the duckbill device changes. When the duckbill device rotates to the bottom of the turntable assembly, the position of the guide body changes. When the duckbill is partially inserted into the soil, the guide wheels on both sides of the duckbill contact the guide body of the turntable assembly. As the turntable assembly rotates further, the guide wheels move along the guide slide of the guide body to the widest position of the guide body. Since the guide wheels are squeezed by the guide body, their positions change. The guide wheels drive the two duckbill plates of the duckbill to swing open along the hinge points. While the duckbill makes a hole in the soil, the tobacco seedlings fall into the hole; (3) The covering wheels of the soil covering mechanism cover the hole with the tobacco seedlings; (4) During the movement of the mobile vehicle, the seedling throwing mechanism, the planting mechanism and the soil covering mechanism work synchronously.

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