Bidirectional compensation type tobacco seedling transplanting mechanism

Abstract

A bidirectional compensation type tobacco seedling transplanting mechanism comprises a vehicle body which is provided with a power assembly, a planting device and a well cellar hole forming drill bit. The power assembly comprises a main power shaft, a first non-circular gear, a second non-circular gear and a gearbox shell, and the first non-circular gear and the second non-circular gear are both arranged in the gearbox shell. The first non-circular gear is fixedly arranged relative to the vehicle body; the main power shaft drives the gearbox shell to rotate relative to the vehicle body; the second non-circular gear is meshed with the first non-circular gear; the second non-circular gear is connected with a crank; the crank is connected with a first / second connecting rod, the tail ends of the first connecting rod and the second connecting rod are arranged on the framework in a sliding manner, and the well cellar cavitation drill bit and the planting device are connected to the tail ends of the first connecting rod and the second connecting rod respectively. According to the bidirectional compensation type tobacco seedling transplanting mechanism, the hole forming quality and the seedling falling success rate are improved, the well cellar depth and the hole opening size conform to the agricultural requirements of tobacco seedling growth, the heat preservation effect of tobacco seedlings in the early growth stage can be guaranteed, and the survival rate of the tobacco seedlings is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of tobacco seedling transplanting, and in particular relates to a bidirectional compensation type tobacco seedling transplanting mechanism. Background Art

[0002] To grow tobacco, you need to cultivate tobacco seedlings first; then transplant the cultivated tobacco seedlings. The commonly used transplanting method is well-pit transplanting. When performing well-pit transplanting, you need to make holes in the tobacco field first, then fill the holes with water, and finally place the tobacco seedlings in the holes to complete the transplanting process. Through well-pit transplanting, the survival rate of tobacco seedlings is high.

[0003] However, the steps of well-cellar transplanting are complicated. The commonly used well-cellar transplanting methods are manual drilling, manual watering, and manual seedling placement, which are labor-intensive, have inconsistent quality, and are extremely inefficient.

[0004] In order to solve the above technical problems, the prior art provides an automated tobacco seedling transplanting solution. The patent document with the authorization announcement number: CN221449078U discloses a traction-type hole-making, fertilizing and watering integrated machine for tobacco seedling well-cellar transplanting, including a tractor and a traction frame connected to the tractor; a ground wheel is connected to the bottom of the traction frame; a hole-making unit, a watering unit and a fertilizing unit are arranged on the traction frame from front to back; the hole-making unit includes a transplanting box and a well-cellar hole-making drill bit connecting frame connected to the transplanting box, the well-cellar hole-making drill bit connecting frame is provided with a drilling motor and a well-cellar hole-making drill bit connected to the output shaft of the drilling motor, and the well-cellar hole-making drill bit is arranged downward; a transmission gear is provided in the transplanting box, and the ground wheel is connected to the transmission gear in transmission; the transmission gear drives the well-cellar hole-making drill bit connecting frame to move back and forth in the vertical direction. The integrated machine for hole drilling, watering and fertilizing described in the present invention is fully functional. During the hole drilling process, drilling and hole enlarging are carried out simultaneously. The holes drilled are easy to adjust and have a wider scope of application. At the same time, the integrated machine has high operating efficiency and better effects, avoids human factors during manual work, and effectively improves the effect of tobacco seedling well-cellar transplanting.

[0005] However, this solution will cause ridge scraping when drilling holes for tobacco seedlings. Specifically, the ridge scraping phenomenon is that when the well cellar hole-forming drill bit is drilling holes, it starts to move horizontally before it is completely lifted out of the well cellar hole; or it starts to drop vertically before it reaches the hole-forming end. In this case, the well cellar hole-forming drill bit will damage the ridge surface and enlarge the well cellar hole opening.

[0006] On the one hand, the ridge scraping phenomenon will damage the ridge surface, and it will cause soil backflow after the holes are dug. Later, when the tobacco seedlings fall into the well cellar, they are not at the lowest point of the well cellar, which may affect the root development and survival rate of the tobacco seedlings in the later stage.

[0007] Secondly, it does not meet the agronomic requirements of transplanting in wells and cellars; if the hole is too large, the leaves that grow out of the tobacco seedlings in the early stage will grow close to the ground, and during the growth process, the leaves that grow close to the ground will die due to the high ground temperature.

[0008] In summary, there is an urgent need for a tobacco seedling transplanter that can achieve better transplanting effects. Summary of the invention

[0009] The invention aims to provide a bidirectional compensation type tobacco seedling transplanting mechanism with simple structure and good use effect.

[0010] To solve the above technical problems, the present invention provides the following technical solutions: a two-way compensation type tobacco seedling transplanting mechanism, comprising a vehicle body, on which a power assembly, a planter, a well cellar hole-forming drill and a horizontally arranged frame are arranged;

[0011] The power assembly includes a main power shaft, a first non-circular gear, a second non-circular gear and a gearbox housing. The main power shaft is rotatably arranged on the vehicle body. Both the first non-circular gear and the second non-circular gear are non-circular gears. Both the first non-circular gear and the second non-circular gear are arranged in the gearbox housing.

[0012] The first non-circular gear is fixedly arranged relative to the vehicle body;

[0013] The main power shaft drives the gearbox housing to rotate relative to the vehicle body;

[0014] The second non-circular gear is rotatably disposed in the gear box housing, and the second non-circular gear is meshed with the first non-circular gear;

[0015] The second non-circular gear is connected with a horizontally arranged crank;

[0016] The crank is connected with a first connecting rod and a second connecting rod, the plane where the first connecting rod is located is parallel to the plane where the second connecting rod is located, the ends of the first connecting rod and the second connecting rod are slidably arranged on the frame, and the well cellar hole drilling bit and the planting device are respectively connected to the ends of the first connecting rod and the second connecting rod.

[0017] The skeleton is a parallel four-bar mechanism, and a horizontally arranged first power shaft and a first auxiliary shaft are arranged on the vehicle body. The main power shaft drives the first power shaft to rotate, and the first power shaft and the first auxiliary shaft are parallel to each other and have the same height; the first power shaft and the first auxiliary shaft are both rotatably arranged on the vehicle body, and the first power shaft and the first auxiliary shaft are respectively connected to the front and rear of the skeleton.

[0018] The main power shaft transmits power to the first power shaft through chain transmission.

[0019] A first rocker arm, a second rocker arm, a third rocker arm and a fourth rocker arm are provided on the skeleton. Meanwhile, a second auxiliary shaft and a third auxiliary shaft are also provided on the skeleton. The first ends of the first rocker arm, the second rocker arm, the third rocker arm and the fourth rocker arm are respectively rotatably connected to the skeleton, and the first rocker arm is connected to the first power shaft. The first rocker arm rotates driven by the first power shaft. The second ends of the second rocker arm, the third rocker arm and the fourth rocker arm are respectively rotatably connected to the first auxiliary shaft, the second auxiliary shaft and the third auxiliary shaft.

[0020] The frame comprises a longitudinal frame and a transverse frame, and a slideway parallel to the longitudinal frame is arranged on the frame.

[0021] The first connecting rod and the second connecting rod are respectively provided with a first sliding block and a second sliding block which are horizontally arranged. The first sliding block and the second sliding block are both slidably arranged on the slideway. The planter and the well-cellar hole-forming drill are respectively connected to the first sliding block and the second sliding block.

[0022] The crank includes two fixedly connected sub-cranks, the axes of the two sub-cranks are parallel to each other, the first ends of the first connecting rod and the second connecting rod are respectively rotatably connected to the two sub-cranks; the second ends of the first connecting rod and the second connecting rod are respectively rotatably connected to the first slider and the second slider, and the first slider and the second slider slide linearly on the longitudinal frame.

[0023] A bearing is arranged in the gearbox housing, and the second non-circular gear is rotatably connected in the gearbox housing through the bearing; when the second non-circular gear is meshing with the first non-circular gear, the center distance between the first non-circular gear and the second non-circular gear remains unchanged.

[0024] A U-shaped plate is arranged on the vehicle body, a flange is installed on the U-shaped plate, and the first non-circular gear is fixed on the flange.

[0025] It also includes a second power shaft, the main power shaft drives the second power shaft to rotate, a bearing is installed in the aperture of the first non-circular gear, and the second power shaft is rotationally connected to the first non-circular gear through the bearing; the gear box housing is fixedly connected to the second power shaft; the second power shaft drives the gear box housing to rotate coaxially and synchronously.

[0026] Through the above technical scheme, the technical effects of the present invention are as follows: 1. The present invention can make tobacco seedling holes, inject water into tobacco seedling holes, and put tobacco seedlings into tobacco seedling holes in sequence, with high work efficiency; it is easy to implement, and can compensate for the movement of the vehicle body front and back, so that the tobacco seedling holes made are large at the top and small at the bottom, and it is not easy to have the phenomenon of hole collapse. At the same time, the size of the tobacco seedling hole is consistent with the design, which ensures the heat preservation and moisture retention of subsequent tobacco seedlings and improves the survival rate of tobacco seedlings. 2. In the tobacco seedling transplanting mechanism, when the planter moves to the top of the tobacco seedling hole made in advance, it can compensate for the advancement of the vehicle body, so that the speed of the tobacco seedling relative to the ground is zero, and the tobacco seedling can fall vertically into the tobacco seedling hole, which improves the tobacco seedling transplanting effect; 3. The skeleton is highly stable, the movement is smooth, and it is not easy to get stuck; 4. The second non-circular gear and the first non-circular gear are cleverly designed, and the two cooperate with each other to drive the well cellar hole drill and the planter to slide in the horizontal direction, perform front and back two-way compensation, and effectively solve the ridge scraping phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 is a schematic diagram of the skeleton structure;

[0029] Figure 3 is a schematic diagram of the skeleton structure after rotation;

[0030] Figure 4 It is a schematic diagram of the structure of non-circular gear 1 and non-circular gear 2;

[0031] Figure 5 for Figure 4 Axonometric view of the gearbox housing with the gearbox housing opened;

[0032] Figure 6 is a schematic diagram of the connection between the second non-circular gear and the crank;

[0033] Figure 7 It is a schematic diagram of the discharge tray structure;

[0034] Figure 8 The motion trajectory diagram of the well-cellar hole-forming drill and the planter during the working process, wherein the motion trajectory of the well-cellar hole-forming drill is located at the top, and the motion trajectory of the planter is located at the bottom;

[0035] Fig. 9 This is the motion trajectory diagram of the well cellar hole drilling drill bit during the working process of the conventional transplanter;

[0036] Among them, 1-car body; 2-track; 31-well hole drilling bit; 32-planter; 33-pull wire; 4-frame; 41-longitudinal frame; 42-transverse frame; 5-water tank; 6-discharging tray; 7-water pipe; 8-pin; 9-shell; 10-crank; 101-sub-crank; 11-discharging chain; 12-first connecting rod; 13-second connecting rod; 14-first slider; 15-second slider; 16-non-circular gear 1; 17-non-circular gear Wheel 2; 18-flange; 19-first rocker; 20-second rocker; 21-third rocker; 22-fourth rocker; 23-seedling conveying cup; 231-first rotating shaft; 232-second rotating shaft; 24-seedling drop port; 25-seedling baffle; 26-auxiliary plate; 27-main power shaft; 271-first power shaft; 272-first auxiliary shaft; 273-second power shaft; 274-second auxiliary shaft; 275-third auxiliary shaft; 28-slideway. DETAILED DESCRIPTION

[0037] Embodiment 1, a two-way compensation type tobacco seedling transplanting mechanism, this transplanting mechanism can make tobacco seedling holes in the tobacco field, water the tobacco seedling holes and then put the tobacco seedlings into the tobacco seedling holes. The steps are compact and the design is ingenious, which greatly reduces the labor intensity of human labor.

[0038] The bidirectional compensation type tobacco seedling transplanting mechanism is as follows: Figures 1 to 7 As shown, the vehicle body 1 includes a vehicle body 1. In order to move the vehicle body 1, a power assembly and a crawler 2 are provided on the vehicle body 1. The power assembly includes a motor and a reducer connected to the motor. The reducer drives the crawler 2 to work. When the crawler 2 works, it drives the entire vehicle body 1 to move in the tobacco field. In this embodiment, the crawler includes a driving wheel and a guide wheel. The driving wheel and the guide wheel drive the crawler part to transmit, so that the vehicle body moves. In order to synchronize the tobacco seedling transplanting mechanism with the movement of the vehicle body, a main power shaft 27 is connected to the driving wheel through a chain drive. The main power shaft 27 provides power for the subsequent tobacco seedling transplanting mechanism. At the same time, a first power shaft 271 and a second power shaft 273 are connected to the main power shaft 27 through a chain drive. This embodiment does not involve improvements to the crawler itself. The technical names "driving wheel", "guide wheel" and "crawler" mentioned are all mature existing technologies, and the existing technologies can be directly cited.

[0039] To refine the structure of the vehicle body 1, the vehicle body 1 includes a frame 4, which is a parallel four-bar mechanism. The frame 4 rotates in the vertical direction under the drive of the main power shaft 27. In order to realize the rotation of the frame 4 in the vertical direction, the specific scheme is as follows:

[0040] A rocker is rotatably connected to the frame 4 , wherein the rockers are a first rocker 19 and a second rocker 20 , and the first rocker 19 and the second rocker 20 are parallel to each other.

[0041] In order to ensure the rotation of the first rocker 19 and the second rocker 20, a first power shaft 271 and a first auxiliary shaft 272 are rotatably connected to the vehicle body 1. The first power shaft 271 is used to be rotatably connected to the first rocker 19, and the first auxiliary shaft 272 is used to be rotatably connected to the second rocker 20. The first end of the first power shaft 271 is rotatably connected to the vehicle body, and the second end of the first power shaft 271 is connected to the second end of the first rocker 19; and the first rocker 19 performs a circular motion driven by the rotation of the first power shaft 271. Similarly, the first end of the first auxiliary shaft 272 is rotatably connected to the vehicle body 1, and the second end of the first auxiliary shaft 272 is rotatably connected to the second end of the second rocker 20, and the second rocker performs a circular motion around the first auxiliary shaft 272. The first rocker 19 and the second rocker 20 together drive the entire skeleton to perform a circular motion. The rotation of the first rocker arm 19 drives the rotation of the skeleton 4. To ensure the stability of the rotation of the skeleton 4, a third rocker arm 21 and a fourth rocker arm 22 are also provided on the skeleton 4 to drive the entire skeleton 4 to make circular translation. To further illustrate the third rocker arm 21 and the fourth rocker arm 22, a second auxiliary shaft 274 and a third auxiliary shaft 275 are provided on the vehicle body 1. The second auxiliary shaft 274 and the third auxiliary shaft 275 are parallel to the first power shaft 271 and the first auxiliary shaft 272. One end of the second auxiliary shaft 274 and the third auxiliary shaft 275 are rotatably connected to the vehicle body, and the other end is rotatably connected to the third rocker arm 21 and the fourth rocker arm 22 respectively.

[0042] In order to provide power for the rotation of the skeleton, a sprocket is provided on the first power shaft 271, and the sprocket and the main power shaft 27 are driven by a chain, so that the main power shaft 27 transmits power to the sprocket, and then the first power shaft 271 rotates, thereby driving the first rocker 19 to rotate around the first power shaft 271, driving the second rocker to rotate around the first auxiliary shaft 272, and driving the third rocker and the fourth rocker around the second auxiliary shaft 274 and the third auxiliary shaft 275, thereby driving the skeleton 4 to make circular translation.

[0043] The skeleton 4 moves in a translational manner during the rotation of the first rocker 19 and the second rocker 20, that is, the skeleton 4 always remains horizontal during the lifting process, thereby ensuring that the well drilling drill 31 and the planter 32 are always vertical during the lifting process without tilting.

[0044] The frame 4 includes a longitudinal frame 41 and a transverse frame 42. The longitudinal frame 41 is arranged along the length direction of the vehicle body 1; the transverse frame 42 is arranged along the width direction of the vehicle body 1, and the longitudinal frame 41 is connected between the transverse frames 42. A slide 28 is arranged on the longitudinal frame 41, and the length direction of the slide 28 is the same as the length direction of the longitudinal frame 41.

[0045] A first slider 14 and a second slider 15 are provided on the slideway 28, and the first slider 14 and the second slider 15 are provided with a well hole drill 31 and a planter 32 respectively. As the skeleton 4 moves in a circular translation, the well hole drill 31 and the planter 32 will slide along the slideway 28 in the horizontal direction; thus, as the skeleton 4 is lifted and lowered, the well hole drill 31 and the planter 32 will slide along the slideway on the longitudinal skeleton 41 in the horizontal direction while being lifted and lowered together. The specific implementation method is: a first non-circular gear 16 is connected to the second power shaft 273, wherein the first non-circular gear 16 is rotationally connected to the second power shaft 273, and the non-circular gear 16 itself is fixed. The specific connection method of the first non-circular gear 16 is: a U-shaped plate is provided on the vehicle body 1, a flange 18 is fixed on the U-shaped plate, and the first non-circular gear 16 can be fixed on the flange 18; and a bearing is connected to the connection aperture of the first non-circular gear 16, and the second power shaft 273 is rotationally connected to the first non-circular gear 16 through the bearing.

[0046] The second non-circular gear 17 is meshed with the first non-circular gear 16. As the first non-circular gear 16 rotates, the second non-circular gear 17 rotates around the first non-circular gear 16.

[0047] A gearbox housing 9 is sleeved on the outer side of the first non-circular gear 16 and the second non-circular gear 17, and the gearbox housing 9 is connected to the second power shaft 273 through a pin, so that the gearbox housing 9 rotates together with the second power shaft 273; a bearing is arranged in the gearbox housing 9, and the second non-circular gear 17 is rotationally connected to the gearbox housing 9 through the bearing, so that when working, the gearbox housing 9 and the second non-circular gear 17 rotate around the second power shaft 273 coaxially and synchronously, and the second non-circular gear 17 rotates in meshing engagement with the first non-circular gear 16 in the gearbox housing 9. During the rotation process, the first non-circular gear 16 and the second non-circular gear 17 face the short semi-axis through the long semi-axis, so that the center distance between the two remains unchanged, and the average transmission ratio per rotation is 1.

[0048] The crank 10 is connected to the second non-circular gear 17. The crank 10 is substantially connected to the rotation axis of the second non-circular gear 17, which is an eccentric connection. The crank 10 is Z-shaped, that is, the crank 10 includes two sub-cranks 101 that are parallel to each other and fixedly connected. The two sub-cranks 101 are connected by a longitudinal rod to achieve fixed connection. The distance from the rotation axis of the second non-circular gear 17 to the axis of the two sub-cranks 101 of the Z-shaped crank 10 is one crank; the first connecting rod 12 and the second connecting rod 13 are respectively rotatably connected to the two sub-cranks 101.

[0049] Driven by the rotation of the second power shaft 273, the second non-circular gear 17 drives the crank 10 to rotate, and the crank 10 drives the first connecting rod 12 and the second connecting rod 13 to rotate. Due to the action of the two sub-cranks 101, the rotation of the first connecting rod 12 and the second connecting rod 13 is not coaxial.

[0050] The ends of the first connecting rod 12 and the second connecting rod 13 are both slidably disposed on the longitudinal frame 41. The specific connection method between the first connecting rod 12 and the second connecting rod 13 and the longitudinal frame 41 is as follows: the ends of the first connecting rod 12 and the second connecting rod 13 are respectively connected to the first slider 14 and the second slider 15, and the first slider 14 and the second slider 15 are both slidably disposed on the slideway 28.

[0051] The first slider 14 and the second slider 15 are respectively connected with a well hole drill 31 and a planter 32. In this embodiment, the height of the planter 32 is higher than that of the well hole drill 31 in the vertical direction. The well hole drill 31 is introduced into the soil to make a hole relative to the movement trajectory, and the planter 32 puts the tobacco seedling into the hole above the hole mouth.

[0052] The well hole drill 31 and the planter 32 are both arranged vertically downward, and the two are in the same plane, that is, when the vehicle body 1 is moving, the well hole drill 31 makes a seedling hole in front, and when the seedling hole moves to the bottom of the planter 32, the planter seedlings are put into the seedling hole. In order to realize the action of the well hole drill 31 and the planter, a well hole drill motor is connected to the well hole drill 31, and the well hole drill motor drives the well hole drill 31 to rotate, thereby drilling the seedling hole. In this embodiment, the well hole drill motor is a commercially available product.

[0053] A pull line 33 is connected to the planter 32, and the planter 32 can be opened by the pull line 33, so that the tobacco seedlings therein fall into the tobacco seedling holes.

[0054] In this embodiment, the planter 32 and the pull wire 33 on the planter 32 are both mature existing technologies. This embodiment does not involve improvements in this part, and only requires the purchased planter 32 to be installed on the frame.

[0055] In addition, in this embodiment, the pull wire 33 is used to open the planter 32 in the following manner: one end of the pull wire 33 is fixed to the upper part of the vehicle body, and the length of the pull wire 33 is constant. When the planter 32 moves to the lower half, the pull wire 33 is tightened, and the planter 32 is opened; when the planter 32 moves to the upper half, the pull wire 33 is loosened, and the planter 32 is closed.

[0056] When working, the second power shaft 273 drives the gear box housing 9 to rotate through the pin 8. As the gear box housing 9 rotates, the second non-circular gear 17 rotates around the first non-circular gear 16. The second non-circular gear 17 rotates around the first non-circular gear 16, which drives the crank 10 to rotate. Then, with the center of the second non-circular gear 17 as the base point, the two sub-cranks 101 drive the first connecting rod 12 and the second connecting rod 13 to rotate, thereby driving the first slider 14 and the second slider 15 to slide horizontally on the slide 28.

[0057] The further working method is as follows: the first rocker 19, the second rocker 20, the third rocker 21 and the fourth rocker 22 drive the skeleton 4 to perform circular translation; the second power shaft 273 drives the gear box housing 9 through the pin 8, and the gear box housing 9 drives the second non-circular gear 17 to rotate around the first non-circular gear 16, so that the crank 10 rotates with the second non-circular gear 17. During the rotation of the crank 10, the first slider 14 and the second slider 15 will be driven to slide horizontally on the slideway 28 to achieve front and rear compensation during the forward movement of the vehicle body 1; during this process, the well cellar drilling bit 31 and the planting device 32 are always in a vertical state, and the relative motion trajectory is an "inverted water drop shape", and the absolute motion trajectory is a "Y" shape, such as Figure 8 As shown in the figure, the part of the trajectory of the well cellar hole drill 31 located below the trajectory of the planter 32 is the part that enters the soil, which can also be regarded as the shape of the tobacco seedling hole. Figure 8 It can be seen that the tobacco seedling hole well cellar of this scheme is cylindrical, and the bottom is conical. The well cellar hole drilling bit 31 causes little damage to the ridge surface during the hole forming process. The tobacco seedling hole is not easy to collapse, and it is not easy for soil to flow back into the tobacco seedling hole to cause loose soil and affect the growth of tobacco seedlings.

[0058] In this embodiment, with the circular translation of the skeleton 4, the relative motion trajectories of the well hole forming drill bit 31 and the planter 32 arranged on the first slider 14 and the second slider 15 are in the shape of an "inverted water drop", so that while the vehicle body 1 moves forward, the well hole forming drill bit 31 and the planter 32, especially the well hole forming drill bit 31, have a compensation in the horizontal direction, and the compensation is used to eliminate the ridge scraping problem caused by the movement of the vehicle body: the compensation method is as follows: for the well hole forming drill bit 31, before reaching the lowest point of the tobacco seedling hole forming, it will rotate a distance against the moving direction of the vehicle body 1, thereby offsetting the error caused by the forward movement of the vehicle body 1 and reducing the tobacco seedling hole opening; after reaching the lowest point of the tobacco seedling hole forming, it will rotate a certain distance along the moving direction of the vehicle body 1, also to reduce the tobacco seedling hole opening, to avoid the tobacco seedling hole opening being too large due to the movement of the vehicle body 1, resulting in ridge scraping, realizing front and rear two-way compensation, and improving the survival rate of the tobacco seedlings. Before the implanter 32 moves to the top of the pre-drilled tobacco seedling hole, it will have a speed in the opposite direction of the moving direction of the vehicle body 1, so as to avoid the vehicle body 1 having a horizontal speed during the descent of the tobacco seedlings.

[0059] In this embodiment, by compensating forward and backward in the X direction relative to the forward direction of the vehicle body 1, the relative motion trajectory of the well pit hole forming drill bit 31 is made to be "inverted water drop shape" and the absolute motion trajectory is made to be "Y" type, thereby preventing the occurrence of ridge scraping and improving the well pit hole forming quality of the well pit hole forming drill bit 31 when drilling holes for tobacco seedlings.

[0060] In this embodiment, the parallel four-bar mechanism of the skeleton 4 makes circular motion, and the well hole drilling bit 31 and the planting device 32 slide horizontally on the slideway 28. The combined effect changes the transplanting trajectory and compensates for the movement of the vehicle body, so that the original circular relative motion trajectory is changed to an "inverted teardrop-shaped" trajectory, which makes it less likely to have voids, and the size of the tobacco seedling hole is consistent with the design, and there will be no problem of the hole becoming larger due to hole collapse.

[0061] At the same time, due to the compensation of the planter 32 relative to the vehicle body 1, when the planter 32 moves to the top of the pre-made seedling hole, when the seedling needs to fall into the seedling hole, the moving speed of the seedling is basically zero, so that the seedling can fall vertically into the seedling hole. The seedling moving speed is zero relative to the ground because the vehicle body 1 has a forward moving speed, and the planter 32 has a backward moving speed, and the movement of the two can basically offset each other.

[0062] In addition, in this embodiment, since the power source of the entire tobacco seedling transplanting mechanism is the power of the vehicle body transmitted through the chain drive, the rotation of the skeleton and the sliding of the first slider and the second slider depend on the travel speed of the vehicle body and are positively correlated with the travel speed. The second non-circular gear 17 rotates one circle to drill a tobacco seedling hole, and at the same time a tobacco seedling falls into the tobacco seedling hole.

[0063] Embodiment 2: This embodiment differs from Embodiment 1 in that the power source of the main power shaft 27 is a motor, which drives the track to work through a reducer and also directly drives the main power shaft 27 to rotate.

[0064] Embodiment 3, this embodiment is different from embodiment 1 in that: in order to ensure watering of the seedling holes, a water tank 5 is provided on the vehicle body 1, and a water pipe 7 is connected to the water tank 5, and the end of the water pipe 7 is arranged downward, and the water pipe 7 is connected between the well cellar hole drilling bit 31 and the duckbill. A solenoid valve is provided on the water pipe 7, and the solenoid valve is opened at a fixed time, wherein the solenoid valve is opened at a fixed time is a mature prior art, and this embodiment does not involve the improvement of this part, and will not be repeated for this part.

[0065] Embodiment 4. The difference between this embodiment and embodiment 3 is that a discharge tray 6 and a seedling conveying cup 23 are provided above the planter 32. A discharge tray 6 is provided with a circulating discharge chain 11. The transmission of the discharge chain 11 is achieved by connecting the second chain 18 to the main power shaft 27. The operation of the main power shaft 27 drives the second chain 18 to transmit. The transmission of the second chain 18 drives the discharge chain 11 to circulate in the discharge tray 6.

[0066] The reason why the unloading chain 11 can be circulated and transmitted in the unloading tray 6 is that: two rotating shafts are provided in the unloading tray 6, namely the first rotating shaft 231 and the second rotating shaft 232, and gears are installed on the first rotating shaft 231 and the second rotating shaft 232. After the two ends of the unloading chain 11 are connected, one end is meshed with the gear of the first rotating shaft 231, and the other end is meshed with the gear of the second rotating shaft 232; the first rotating shaft 231 is transmitted to the main power shaft 27 through the second chain 18, so that the main power shaft 27 drives the second chain 18 to work, and the second chain 18 drives the first rotating shaft 231 to rotate. As the first rotating shaft 231 rotates, the gears rotate, and the unloading chain 11 is circulated and transmitted between the first rotating shaft 231 and the second rotating shaft 232.

[0067] The seedling conveying cup 23 is connected to the discharge chain 11, and the transmission of the discharge chain 11 drives the seedling conveying cup 23 to transmit on the discharge tray 6; a feeding port is provided at the bottom of the seedling conveying cup 23, and a seedling retaining plate 25 is hinged on the feeding port, and a compression spring is connected between the seedling retaining plate 25 and the feeding port; at the same time, the seedling retaining plate 25 cooperating with the seedling conveying cup 23 on the discharge tray 6 is provided with a seedling dropping port 24.

[0068] When the feeding chain 11 drives the seedling conveying cup 23 to transmit on the feeding tray 6, when it moves to the seedling drop port 24, the seedling baffle 25 opens under the action of the compression spring, and the tobacco seedlings in the seedling conveying cup 23 come out from the feeding port, pass through the seedling drop port 24 and enter the planter 32. When the planter 32 moves to the top of the seedling hole prepared in advance, the planter 32 opens, so that the tobacco seedlings therein fall into the seedling hole. In order to cooperate with the opening of the seedling baffle 25, an auxiliary plate 26 arranged along the chain transmission direction is provided on the seedling drop port 24. The auxiliary plate 26 is inclined. By setting the inclined auxiliary plate 26, when the transmission chain drives the seedling conveying cup 23 to move, the seedling baffle 25 is closed with a buffer.

[0069] The working process of this embodiment is as follows: the vehicle body 1 moves in the tobacco field, and the tobacco farmer stands beside the vehicle body 1 and puts tobacco seedlings into the seedling delivery cup 23; when an empty seedling delivery cup 23 appears, a tobacco seedling is put in; when the vehicle body 1 moves, the first power shaft 271 and the first auxiliary shaft 272 drive the frame 4 to move in a circular manner, and the crank 10 on the second non-circular gear 17 drives the first slider 14 and the second slider 15 to slide horizontally on the slideway 28, and the well cellar hole drilling bit 31 and the planting device 32 connected to the first slider 14 and the second slider 15 move relative to each other. The moving trajectory is in the shape of an "inverted water drop", and the absolute moving trajectory is in the shape of a "Y"; when the vehicle body 1 moves forward, the well cellar hole-forming drill bit 31 will slide in the opposite direction of the moving direction of the vehicle body 1 before reaching the lowest point of the tobacco seedling hole-forming, compensating for the forward movement of the vehicle body 1; after reaching the lowest point of the tobacco seedling hole-forming, the well cellar hole-forming drill bit 31 will slide forward along the moving direction of the vehicle body 1, also compensating for the forward movement of the vehicle body 1, avoiding greater damage to the ridge in the horizontal direction, making the tobacco seedling hole in the shape of an "inverted water drop", avoiding the hole opening being too large, and avoiding the ridge scraping phenomenon. At the same time, after the hole is drilled, water flows out of the water pipe 7 and flows to the tobacco seedling hole, ensuring the survival rate of the transplanted tobacco seedlings.

[0070] In order to verify the effect of the tobacco seedling transplanting mechanism, three test fields were set up, namely, test field 1, test field 2 and test field 3. The external conditions of test field 1, test field 2 and test field 3 were consistent, thus ensuring the only variable, that is, the difference in transplanting methods.

[0071] 1. In the experimental field 1, tobacco seedlings were transplanted manually;

[0072] In Experimental Field 1, since each experimental field had 10 mu of land, it took 5 days to complete the work manually. The work efficiency was extremely low, which seriously affected the consistency of tobacco seedling growth. In addition, during the acceptance process, it was found that the uniformity of tobacco seedlings was low by manual transplanting.

[0073] 2. In the experimental field 2, the currently common tobacco seedling transplanting mechanism was used;

[0074] In Experimental Field 2, since the experimental field also covers 10 mu, transplanting was basically completed in half a day, and the efficiency was greatly improved. However, after observation, the trajectory of the well-cellar hole-forming drill bit was a regular ellipse, such as Figure 8 As shown, the tobacco seedling holes are scraped and ridges appear. In test bench 2, this phenomenon occurs in more than 60%, which ultimately leads to poor quality of the tobacco seedling holes and low survival rate of tobacco seedlings. Fig. 9 In the figure, the part below the horizontal line is the part below the ground. When the vehicle body moves forward, the well cellar hole-forming drill bit 31 is easy to damage the ridge surface, and at the same time, it is easy to cause the tobacco seedling hole to further expand, which is not conducive to heat preservation and moisture retention.

[0075] 3. In the test field 3, the tobacco seedlings were transplanted using the tobacco seedling transplanting mechanism;

[0076] In Experimental Field 3, since the experimental field was also 10 acres, the transplanting was completed in less than half a day, and the efficiency was further improved; during the acceptance process, it was found that the tobacco seedlings fell vertically into the tobacco seedling holes, and the size of the tobacco seedling holes was appropriate, ensuring the heat preservation and survival rate of the tobacco seedlings; subsequent survival rate comparisons found that the tobacco fields using the tobacco seedling transplanting mechanism had a much higher survival rate than conventional tobacco seedling transplanting mechanisms.

[0077] The present invention discloses a two-way compensation type tobacco seedling transplanting mechanism, which can sequentially make tobacco seedling holes, inject water into the tobacco seedling holes, and place tobacco seedlings into the tobacco seedling holes; the mechanism is convenient to implement, and at the same time, during the working process, the crank drives the well cellar hole-forming drill bit and the planter to slide horizontally on the longitudinal skeleton to perform forward and backward compensation, so that the relative motion trajectory of the well cellar hole-forming drill bit and the planter is in the shape of an "inverted water drop", and the absolute motion trajectory is in the shape of a "Y", which is less likely to cause ridge scraping, thereby improving the hole-forming and transplanting effects.

Claims

1. Bidirectional compensation type tobacco seedling transplanting mechanism, characterized by: The vehicle comprises a vehicle body, on which are arranged a power assembly, a planter, a well-cellar-forming drill bit and a horizontally arranged frame; The power assembly includes a main power shaft, a first non-circular gear, a second non-circular gear and a gearbox housing. The main power shaft is rotatably arranged on the vehicle body. Both the first non-circular gear and the second non-circular gear are non-circular gears. Both the first non-circular gear and the second non-circular gear are arranged in the gearbox housing. The first non-circular gear is fixedly arranged relative to the vehicle body; The main power shaft drives the gearbox housing to rotate relative to the vehicle body; The second non-circular gear is rotatably disposed in the gear box housing, and the second non-circular gear is meshed with the first non-circular gear; The second non-circular gear is connected to a horizontally arranged crank; The crank is connected with a first connecting rod and a second connecting rod, the plane where the first connecting rod is located is parallel to the plane where the second connecting rod is located, the ends of the first connecting rod and the second connecting rod are slidably arranged on the frame, and the well cellar hole drilling bit and the planting device are respectively connected to the ends of the first connecting rod and the second connecting rod.

2. The two-way compensation tobacco seedling transplanting mechanism according to claim 1, characterized in that: The skeleton is a parallel four-bar mechanism, and a horizontally arranged first power shaft and a first auxiliary shaft are arranged on the vehicle body. The main power shaft drives the first power shaft to rotate, and the first power shaft and the first auxiliary shaft are parallel to each other and have the same height; the first power shaft and the first auxiliary shaft are both rotatably arranged on the vehicle body, and the first power shaft and the first auxiliary shaft are respectively connected to the front and rear of the skeleton.

3. The two-way compensation tobacco seedling transplanting mechanism according to claim 2, characterized in that: The main power shaft transmits power to the first power shaft through chain transmission.

4. The two-way compensation tobacco seedling transplanting mechanism according to claim 3, characterized in that: A first rocker arm, a second rocker arm, a third rocker arm and a fourth rocker arm are provided on the skeleton. Meanwhile, a second auxiliary shaft and a third auxiliary shaft are also provided on the skeleton. The first ends of the first rocker arm, the second rocker arm, the third rocker arm and the fourth rocker arm are respectively rotatably connected to the skeleton, and the first rocker arm is connected to the first power shaft. The first rocker arm rotates driven by the first power shaft. The second ends of the second rocker arm, the third rocker arm and the fourth rocker arm are respectively rotatably connected to the first auxiliary shaft, the second auxiliary shaft and the third auxiliary shaft.

5. The two-way compensation tobacco seedling transplanting mechanism according to claim 4, characterized in that: The frame comprises a longitudinal frame and a transverse frame, and a slideway parallel to the longitudinal frame is arranged on the frame.

6. The two-way compensation tobacco seedling transplanting mechanism according to claim 5, characterized in that: The first connecting rod and the second connecting rod are respectively provided with a first sliding block and a second sliding block which are horizontally arranged. The first sliding block and the second sliding block are both slidably arranged on the slideway. The planter and the well-cellar hole-forming drill are respectively connected to the first sliding block and the second sliding block.

7. The two-way compensation type tobacco seedling transplanting mechanism according to claim 6, characterized in that: The crank includes two fixedly connected sub-cranks, the axes of the two sub-cranks are parallel to each other, the first ends of the first connecting rod and the second connecting rod are respectively rotatably connected to the two sub-cranks; the second ends of the first connecting rod and the second connecting rod are respectively rotatably connected to the first slider and the second slider, and the first slider and the second slider slide linearly on the longitudinal frame.

8. The two-way compensation tobacco seedling transplanting mechanism according to claim 7, characterized in that: A bearing is arranged in the gearbox housing, and the second non-circular gear is rotatably connected in the gearbox housing through the bearing; when the second non-circular gear is meshing with the first non-circular gear, the center distance between the first non-circular gear and the second non-circular gear remains unchanged.

9. The two-way compensation tobacco seedling transplanting mechanism according to claim 8, characterized in that: A U-shaped plate is arranged on the vehicle body, a flange is installed on the U-shaped plate, and the first non-circular gear is fixed on the flange.

10. The two-way compensation tobacco seedling transplanting mechanism according to any one of claims 1 to 9, characterized in that: It also includes a second power shaft, the main power shaft drives the second power shaft to rotate, a bearing is installed in the aperture of the first non-circular gear, and the second power shaft is rotationally connected to the first non-circular gear through the bearing; the gear box housing is fixedly connected to the second power shaft; the second power shaft drives the gear box housing to rotate coaxially and synchronously.

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