JP7632271B2 - Riding transplanter - Google Patents

Description

The present invention relates to a transplanter for transplanting crops into a field.

Conventionally, a transplanter of this type is known, for example, from Patent Document 1.
This conventional transplanter is configured so that an operator walks behind the machine and sequentially loads the transplants into the transport device, which then transports the transplants, and the transported transplants are then transplanted into the field by the planting device.

JP 2011-116529 A

However, conventional transplanters require the worker to load the transplants into the transport device while walking, which places a heavy burden on the worker. In addition, because the work is done while walking, there is a risk of failure to load, which reduces work efficiency.

The present invention aims to provide a transplanter that reduces the burden on the worker and improves work efficiency.

In order to achieve the above object, the first invention provides:
The vehicle is configured as a towed vehicle coupled to a towing vehicle equipped with a driving force source,
A central transmission mechanism that transmits the driving force received from the towing vehicle to the planting devices disposed on the left and right sides of the vehicle body;
A slide mechanism that allows the planting device to slide left and right,
The planting device is configured to be rotatable up and down and includes a suppressing wheel for suppressing the ridges and an inclination sensor for detecting the left and right inclination of the suppressing wheel;
A riding transplanter is provided, characterized in that a control unit is configured to acquire detection information from the tilt sensor, and when the crushing wheel is tilted at a first specified angle or more, control the sliding mechanism to slide the planting device left and right.

According to the first aspect of the present invention,
By configuring the towed vehicle, the burden on the worker can be reduced. In addition, by controlling the slide mechanism to slide the planting device left and right when the crushing wheels are tilted at a first specified angle or more, the worker does not have to align the left and right positions, which improves work efficiency and enables stable planting.

The second invention has the same configuration as the first invention, and further comprises:
a transport device for transporting the transplant to a planting supply location;
an operator seat provided at the rear of the transport device,
The present invention provides a riding transplanter, characterized in that the conveying belt of the conveying device is deflected toward the inside of the machine body by a tension roller.

According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention,
The operator's seat allows the operator to work in a seated position, improving work accuracy and ensuring a range for the operator's legs to move while seated.

The third invention is, in addition to the configuration of the first or second invention,
The present invention is provided with a rolling mechanism for rolling the machine body, a rotatable soil cover wheel for covering and compacting the soil in which the transplants are planted, and a rotation angle sensor for detecting the rotation angle of the soil cover wheel,
The control unit is configured to acquire detection information from the rotation angle sensor, and when the soil covering wheel rotates more than a second specified angle, control the rolling mechanism and rotate the body in a direction that reduces the rotation angle of the soil covering wheel.

According to the third aspect of the present invention, in addition to the effects of the first or second aspect of the present invention,
This can prevent the transplant from being planted in a tilted position to the left or right, and as a result, the growth of the transplant can be stabilized.

The fourth invention is, in addition to the configuration of the second or fourth invention,
The present invention provides a riding transplanter, characterized in that a drive wheel for supporting the load of the operator's seat is provided below the operator's seat.

According to the fourth invention, in addition to the effects of the second or fourth invention, the weight of the worker is prevented from interfering with the vertical rotation of the planting device, and the forward/backward tilt of the planting device is suppressed, improving planting accuracy.

The fifth invention is, in addition to the configuration of the second or fourth invention,
The operator seats are disposed on the left and right sides of the central transmission mechanism,
Furthermore, a planting operator's seat is provided in the center of the left and right operator's seats, where a worker who performs planting work sits,
The riding transplanter is characterized in that the transplanter's seat does not have a backrest and is disposed rearward of the operator's seat.

According to the fifth aspect of the present invention, in addition to the effects of the second or fourth aspect of the present invention,
The burden on the planter is reduced, and the planter's seat does not have a backrest, so the planter's body movement forward and backward is not hindered, improving work efficiency. In addition, because it is located behind the worker's seat, the planter can easily check the clamping part to see if planting is appropriate, and can easily determine whether or not planting is necessary. In addition, the planter is less likely to come into contact with the clamping part during work, reducing labor.

The sixth invention is, in addition to the configuration of the second invention,
The present invention provides a riding transplanter characterized in that a storage section for storing transplanted plants and a platform on which materials can be placed are disposed in front of the operator's seat, spare storage sections for storing spare transplants are disposed on the left and right sides, and a visor frame for supporting a sunshade visor is provided at the rear of the operator's seat.

According to the sixth aspect of the present invention, in addition to the effects of the second aspect of the present invention,
The provision of the storage section and spare storage section improves work efficiency. The provision of a mounting stand improves convenience. The provision of a visor frame that supports the sunshade visor at the rear of the operator's seat allows the sunshade visor to be installed with improved strength without interfering with the operator's work.

The present invention provides a transplanter that reduces the burden on the worker and improves work efficiency.

FIG. 1 is a schematic left side view of a riding transplanter. FIG. 2 is a schematic rear view of the riding transplanter. FIG. 3 is a schematic rear view of the rolling mechanism. FIG. 4 is a partially sectional plan view of the central transmission mechanism, the slide rotation mechanism, and the left and right planting devices. FIG. 5 is a partial side view of the planting device and its surroundings. FIG. 6 is a plan view showing the planting clamping tool. FIG. 7 is a rear view of the left transport device. FIG. 8 is a control block diagram of the control unit of the riding transplanter. FIG. 9 is a perspective view of the vicinity of the planting device of the riding transplanter. FIG. 10 is a perspective view of the vicinity of the transport device of the riding transplanter. FIG. 11 is a perspective view of a clip for a riding transplanter according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic left side view of a riding transplanter 1 according to a preferred embodiment of the present invention, and Fig. 2 is a schematic rear view of the riding transplanter 1. Here, the riding transplanter 1 according to this embodiment performs the function of transplanting crops, including sweet potato seedlings, into a farm field.

As shown in FIG. 1, the riding transplanter 1 is configured as a towed vehicle coupled to a towing vehicle A equipped with a drive source. By configuring it as a towed vehicle, the burden on the operator can be reduced. In the following description, the direction in which the towing vehicle A is located relative to the body of the riding transplanter 1 is defined as the front, and the opposite direction is defined as the rear. Furthermore, when facing forward, the right hand is defined as the right direction, and the left hand is defined as the left direction. Note that the definitions of these directions do not limit the configuration of the present invention. In addition, the following description will be given of the case in which the transplanted object is a sweet potato seedling.

<Tow vehicle configuration>
The towing vehicle A is a so-called agricultural tractor, and is equipped with at least an engine a1 as the driving force source. The power of the engine a1 is output from a PTO shaft a4 through a clutch in a clutch case a2 and a transmission in a transmission case a3, and is transmitted to the riding transplanter 1 connected to the rear of the vehicle body through a joint a5 connecting the PTO shaft a4 and the input shaft of the riding transplanter 1. The towing vehicle A is equipped with front wheels a6, rear wheels a7, a driver's seat a8, a steering wheel a9, etc. The riding transplanter 1 is connected to the towing vehicle A by a lift arm a10, a lift rod a11, a lower link (not shown), a top link (not shown), etc. The cabin a12 covering the driver's seat a8 is equipped with a sunshade roof a13 at the rear of the cabin a12, which can be opened and closed to be deployed backward.

<Basic configuration of riding transplanter>
As shown in Figures 1 and 2, the riding transplanter 1 basically comprises a body frame K which forms the skeleton of the machine body, left and right planting devices B, B for planting sweet potato seedlings in a field, left and right transport devices D, D for transporting sweet potato seedlings to the planting devices B, a central transmission mechanism M arranged in the left and right center of the machine body and transmitting driving force to the left and right planting devices B, B, a rolling mechanism R arranged in front of the central transmission mechanism M and enabling the machine body to roll, and a slide rotation mechanism J (see Figure 4) interposed between the central transmission mechanism M and the planting devices B and enabling the planting devices B to slide left and right and rotate up and down.

The aircraft frame K is formed from a rigid frame material, to which the rolling mechanism R is connected, and to which the transport device D and central transmission mechanism M are fixed. Furthermore, a support frame k1 is erected on the aircraft frame K, and a sunshade visor k2 is provided on this support frame k1. A sloping portion k3 that slopes downward toward the front is provided at the front of the sunshade visor k2, and is configured not to interfere with the opening and closing of the sunshade roof a13.

Left and right support wheels k3, k3 that can be freely rotated are provided on the lower part of the machine frame K, and on the left and right of these support wheels k3, k3, there are provided an operator seat k4 on which the operator sits, and an auxiliary step k5 that assists the operator in getting on and off the operator seat k4, and the support wheels k3 are configured to support the weight of the operator seat k4. This makes it possible to work while seated on the operator seat k4, improving work accuracy. The left and right support wheels k3, k3 may be used as drive wheels by providing a wheel drive device (in-wheel motor) that applies driving force to the support wheels k3, k3. This configuration prevents the weight of the operator from interfering with the vertical rotation of the planting device B, and improves planting accuracy by suppressing the forward and backward tilt of the planting device B.

The operator's seat k4 is equipped with a left/right mounting position adjustment mechanism, and the mounting position can be adjusted left/right with respect to the support wheel k3. This left/right mounting position adjustment mechanism is configured, for example, by fixing a mounting stay with the left/right direction as the longitudinal direction on the support wheel k3, providing multiple mounting holes along the longitudinal direction of this mounting stay, and having the operator select one of the mounting holes and bolt the operator's seat k4.

Between the left and right sides of the operator's seat k4, a planter 's seat k6 on which a worker ( planter ) performing the planting work sits is provided so as to be fixed to the rear of the machine frame K. This planter 's seat k6 is located rearward of the operator's seat k4. The planter 's seat k6 is configured without a backrest so as not to interfere with the planting work. By arranging the planter 's seat k6 rearward of the operator's seat k4, the planter can easily determine whether or not planting is necessary after checking whether the clamping portion b33 is planting, and the planter is less likely to come into contact with the clamping portion b33 during work, reducing the labor required.

Above the left and right conveying devices D, D, a loading platform k7 on which materials can be placed is fixed to the machine frame K, and on this loading platform k7, storage sections (seedling containers) k8, k8 for storing sweet potato seedlings before transplanting are arranged on the left and right, respectively. In addition, an irrigation tank k9 is arranged so as to be sandwiched between the left and right storage sections k8, k8.

The auxiliary step k5 may be provided with a step-on switch pedal, and configured to alert the driver of the towing vehicle A with a buzzer or the like when the switch pedal is operated. This allows the worker seated in the worker's seat k4 to alert those around him or her when a problem occurs, such as when the supply of sweet potato seedlings is not enough.

In addition, a visor frame k10 that supports the sunshade visor k2 is provided behind the operator's seat k4, which improves the strength of the sunshade visor k10 without interfering with the operator's work.

<Structure of rolling mechanism>
FIG. 3 is a schematic rear view of the rolling mechanism R.
The riding transplanter 1 has a rolling mechanism R that swings the machine body around a rolling axis X1. The machine body frame K of the riding transplanter 1 is configured to be freely swingable around the rolling axis X1 of the rolling axis X with respect to the towing vehicle A.

As shown in FIG. 3, the rolling mechanism R has a rolling motor r1, a rolling roller r2, and a rope r3. The rolling motor r1 and the rolling roller r2 are disposed above the rolling axis X1. Although not shown, the right end of the rope r3 is connected to the right side of the main frame K (i.e., the body of the riding transplanter 1), and the left end of the rope r3 is connected to the right side of the main frame K.

The rolling motor r1 is composed of an electric motor that can rotate forward and backward. The power of the rolling motor r1 is transmitted to the rolling roller r2 via a transmission mechanism (gear transmission mechanism) r4. The transmission mechanism r4 has a first gear r5 that is rotated by the power of the rolling motor r1, and a second gear r6 that meshes with the first gear r4.

When the rolling roller r2 is rotated in one direction, for example, clockwise in FIG. 3, by the rolling motor r1, the left side of the rope r3 is pulled. As a result, the main frame K swings in the clockwise direction in FIG. 2 around the rolling axis X1. When the rolling roller r2 is rotated in the other direction, for example, counterclockwise in FIG. 2, by the rolling motor r1, the right side of the rope r3 is pulled. As a result, the main frame K swings in the counterclockwise direction in FIG. 2 around the rolling axis X1. In this way, the rolling mechanism R can control the rolling of the body of the riding transplanter 1 by controlling the rolling motor r1. The rolling mechanism R may be provided so as to be capable of rolling by controlling a hydraulic cylinder instead of the rolling motor r1.

<Configuration of central transmission mechanism>
4 is a partially sectional plan view of the central transmission mechanism M, the slide rotation mechanism J, and the left and right planting devices B, B. The central transmission mechanism M receives power from the joint a5 and transmits the power to the left and right planting devices B, B by branching off to the left and right.

The central transmission mechanism M functions to transmit driving force to the left and right planting devices B, B.
The central transmission mechanism M includes a main shaft m2 rotatably supported by a branch transmission case m1. The main shaft m2 is an input shaft that receives power from a joint a5 and rotates. The power of the main shaft m2 is transmitted to the left and right branch shafts m4, m4, respectively, by a pair of bevel gears m3, m3 that mesh with each other.

<Configuration of slide rotation mechanism>
The slide rotation mechanism J functions to enable the planting devices B to slide left and right and to rotate up and down. As shown in Figure 4, the slide rotation mechanism J is interposed between the planting devices B and the left and right of the central transmission mechanism M.

The slide rotation mechanism J is equipped with a rotation case j1 rotatably attached to the branch transmission case m1 of the central transmission mechanism M on the left and right, a slide case j2 slidably attached to the rotation case j1 in the left-right direction, and a side case j4 to which the planting device B is connected. A telescopic transmission shaft j3 that can expand and contract in its own axial direction is arranged in the rotation case j1 and slide case j2, and a planting device transmission shaft j5 that transmits power to the planting transmission device B is arranged in the side case j4.

The telescopic transmission shaft j3 rotates integrally with the branch shaft m4 and transmits power to the planting device transmission shaft j5. Furthermore, the planting device transmission shaft j5 is connected to the input shaft of the planting device B and is configured to transmit power to the planting device B.

The slide rotation mechanism J also includes a rotation cylinder j6 fixed to the side of the branch transmission case m1, and the tip of the telescopic side of the rotation cylinder j6 is rotatably connected to the rotation case j1. As a result, when the rotation cylinder j6 telescopically extends or retracts, the rotation case j1 rotates, and as a result, the planting device B moves up and down, making it possible to adjust the planting height.

The slide rotation mechanism J further includes a left-right sliding cylinder j7 that is fixed inside the rotating case j1 and has a telescopic end connected to the slide case j2. As a result, when the left-right sliding cylinder j7 telescopically expands and contracts, the slide case j2 slides left and right, and as a result, the planting device B slides left and right.

With the above configuration, the slide rotation mechanism J can rotate the planting device B up and down by controlling the rotation cylinder j6, and can slide the planting device B left and right by controlling the left and right sliding cylinder j7.

The slide rotation mechanism J further includes a rotation cylinder j6 fixed to the side of the branch transmission case m1, and the tip of the rotation cylinder j6 is rotatably connected to the rotation case j1. As a result, when the rotation cylinder j6 expands and contracts, the rotation case j1 rotates, and as a result, the planting device B moves up and down.

<Configuration of planting device>
The planting device B receives power from the planting device transmission shaft j5 of the slide rotation mechanism J and serves the function of planting the sweet potato seedlings transported by the transport device D in the field.

The planting device B is equipped with a planting transmission case b1 that transmits power to the planting link mechanism b2, a planting link mechanism b2 that performs the planting operation of the planting clamp b1, and a planting clamp b3 that clamps and plants the sweet potato seedlings.

FIG. 5 is a partial side view of the planting device B and its surroundings.
As shown in Figures 4 and 5, the planting transmission case b1 has a first case part b12 whose front part is connected to the rear part of the planting device transmission shaft j5 of the slide rotation mechanism J and receives power from the planting device input shaft b11, a second case part b13 fixed to the first case part b12 and receives power from the first case part b12, and a third case part b14 fixed to the left end part of the second case part b13, receives power from the second case part b13, and transmits power to the planting link mechanism b2.

The third case part b14 is rotatable up and down at a predetermined angle (e.g., 30° upward from the horizontal) around the planting clutch shaft b15, which is the input shaft of the third case part b14. This allows the planting device B and the transport device D to rotate up and down at a predetermined angle together with the third case part b14, with the central transmission mechanism M as the reference.

The third case part b14 is provided with a support frame part b16 that is fixed to the third case part b14 and extends rearward. A pair of left and right soil cover wheels b18 are provided from the rear end of the support frame part b16 via a soil cover wheel mounting frame b17. The soil cover wheels b18 are free-wheeling wheels that come into contact with the soil surface and cover and compress the soil in which the sweet potato seedlings are planted. Therefore, the grounding of the pair of left and right soil cover wheels b18 causes the planting device B and the seedling transport part D to swing within a predetermined rotation angle range in response to the unevenness of the field surface, so that the planting depth relative to the soil surface is maintained constant. Although not shown, the soil cover wheel b18 is provided with a rotation angle sensor S3 that detects the rotation angle. As a result, the up and down movement of the soil cover wheel b18 can be detected by detecting the rotation angle.

In addition, between the pair of left and right soil covering wheels b18, b18, a pressure suppressing wheel b19 is provided to suppress the soil in which the sweet potato seedlings are planted. The pressure suppressing wheel b19 has a smaller diameter than the soil covering wheel b18, and is attached to a pressure suppressing wheel mounting frame b20 that is provided on the support frame b16 so as to be able to rotate up and down. Although not shown, the left and right pressure suppressing wheels b19, b19 are each provided with a ridge detection sensor S1 that detects the contact of the pressure suppressing wheel b19 with the ground, and a tilt sensor S2 that detects the left and right tilt of the attitude of the pressure suppressing wheel b19. When the planting position is near the top of the ridge, the pressure suppressing wheel b19 is in a horizontal position.

A scraper b4 made of an elastic rubber plate is provided near the planting clamp b3. The scraper b4 has two notches on the left and right sides that are cut from the front, and the left and right planting clamps b3 enter the left and right notches to remove soil adhering to both the left and right sides of the left and right seedling planting clamps b3.

The planting link mechanism b2 is composed of a drive arm b21 that is driven to rotate by transmission from the third case part b14, a support link part b22 whose front end is connected to the drive arm b21, and a swing link b23 that connects the rear end of the support link part b22 to the support frame b16.

FIG. 6 is a plan view showing the planting clamp b3.
The planting clamping tool b3 is composed of a pair of clamping tool holders b32 connected to a connecting shaft b31 supported by the support link part b22, a pair of clamping parts b33 fixed to the tip of the clamping tool holder b32 for clamping the sweet potato seedlings, and a bearing b34 provided on the opposite side of the clamping part b33 of the clamping tool holder b32. When the driving arm b21 is driven to rotate, the pair of clamping tool holders b32 rotate around the connecting shaft b31 to open and close the pair of clamping parts b33.

The planting clamping tool b3 is equipped with an opening/closing cam b35 that rotates together with the drive arm b21, and the pair of clamping parts b33 are biased in the closing direction by a spring b36. However, when the protrusion b37 on the side of the opening/closing cam b35 comes into contact with the bearing b34, the distance between the pair of clamping parts b33 becomes wider.

When the opening/closing cam b35 rotates, the protrusion of the opening/closing cam b35 comes into contact with the bearing b34 near the bottom dead center of the planting trajectory, causing the pair of clamping portions b33 to open. Thereafter, when the clamping portion b33 reaches the planting supply position P (see Figure 7), the bearing b34 passes the protrusion b37 and is biased by the spring b36 between the pair of clamping holders b32, causing the tip portion to move in the closing direction and clamp the lower end of the vine of the sweet potato seedling at the planting supply position P. The planting clamping tool b3 then operates by tilting its front-to-back posture to the forward leaning side so that the tip of the clamping tool b3 moves backwards while the drive arm b21 rotates to bury the seedling in the soil until it is near the bottom dead center of the planting trajectory while the seedling is still clamped by the clamping parts b33. When the projection b37 of the opening/closing cam b35 comes into contact with the bearing b34 again near the bottom dead center, the tips of the pair of clamping parts b33 open, and the sweet potato seedling that was being clamped is released and transplanted into the soil.

<Configuration of the conveying device>
7 is a rear view of the left conveying device D. The right conveying device D has the same basic configuration, so the left conveying device D will be described below, and a description of the right conveying device D will be omitted.

As shown in FIG. 7, the conveying device D is configured to convey sweet potato seedlings by rotating a conveying belt d2 on which clips d1 that clamp the sweet potato seedlings with brush bristles, sponges, or the like are provided at predetermined intervals.

The conveyor belt d2 is wound endlessly around a drive roller d3 that rotates the conveyor belt d2, a first driven roller d4 provided below the drive roller d3, and a second driven roller d5 provided on the outer side of the machine body relative to the drive roller d3, so that the conveyor belt d2 forms a roughly triangular shape when viewed from the front (rear). Although not shown, the drive roller d3 rotates by power branched off from the central transmission mechanism M.

As a result, the conveyor belt d2 is equipped with an upper lateral feed section d21 that feeds the clip d1 laterally toward the inside of the machine body at the upper side of the machine body, a downward feed section d22 that feeds the clip d1 conveyed by the upper lateral feed section d21 downward to the machine body, and an upward feed section d23 that feeds the clip d1 conveyed by the downward feed section 5b upward again to the machine body.

A tension roller d6 is provided in the middle of the upward feed section d23 to bend the seedling transport belt toward the inside of the machine body, creating space at the feet of the operator's seat k4 and preventing the upward feed section d23 from interfering with the rear wheels a7 or the feet of the operator seated on the operator's seat k4. As a result, the operator seated on the operator's seat k4 can ensure sufficient space to move his or her feet. In addition, basket-shaped reserve storage sections d7, d7 for storing spare sweet potato seedlings are provided on the left and right sides of the upward feed section d23, respectively.

<Configuration of control unit>
FIG. 8 is a control block diagram of the control unit C of the riding transplanter 1.
The control unit C is configured with a CPU that performs calculation processing and a memory that can read and write information necessary for the calculation processing, and various functions are realized by the CPU operating in accordance with various control programs stored in the memory.

The input side of the control unit C is connected to a ridge detection sensor S1, a tilt sensor S2, and a rotation angle sensor S3, making it possible to acquire detection information from these.

The output side of the control unit C is connected to the rolling motor r1 of the rolling mechanism R, the rotation cylinder j6 of the slide rotation mechanism J, and the left/right sliding cylinder j7, making it possible to control these mechanisms.

The control unit C acquires the detection/detection information of the ridge detection sensor S1 and the tilt sensor S2, and when either the left or right suppression wheel b19 is not on the ground or is tilted at a first specified angle (e.g., 30°) or more, it controls the left or right sliding cylinder j7 in the corresponding left or right direction, and slides the planting device B back and forth to the left or right within the movable range (e.g., first starts sliding toward the outside of the machine body, and when it reaches the outer end of the movable range, switches the sliding direction and slides toward the inside of the machine body) until the above condition is no longer met. As a result, if the suppression wheel b19 is in a grounded state and is not at an inclination angle near the horizontal, the left and right positions of the planting device B are automatically adjusted, so that the transplants can be stably planted near the top of the ridge. In addition, the operator is not required to align the left and right positions, improving work efficiency.

The control unit C also obtains detection information from the rotation angle sensor S3, and when either the left or right soil cover wheel b18 rotates by a second specified angle (e.g., ±20° relative to the horizontal) or more, controls the rolling motor r1 to rotate the machine in a direction that reduces the rotation angle of the corresponding left or right soil cover wheel b18 (e.g., when the soil cover wheel b18 is at a position +10° upward relative to the horizontal, it is moved downward by rolling). This prevents the transplants from being planted at an angle. As a result, the growth of the transplants can be stabilized. In addition, by deliberately not controlling the rolling motor r1 for small vertical rotations, excessive reactions to small vertical movements that can be handled by floating can be prevented.

In this case, the control unit C may be configured to control the rotation cylinder j7 instead of controlling the left/right sliding cylinder j7 to rotate the planting device B in a direction that reduces the rotation angle of the soil cover wheel b18 in the corresponding direction, either left or right.

<Air nozzle configuration>
FIG. 9 is a perspective view of the vicinity of the planting device B of the riding transplanter 1 according to the preferred embodiment of the present invention.
As shown in Fig. 9, in a preferred embodiment of the present invention, the clamping part b33 of the planting device B is provided with an air nozzle b5 that sprays air toward the claw part at the tip. Furthermore, the timing of spraying air from the air nozzle b5 is set to the timing when the clamping part b33 grabs the sweet potato seedling from the clip d1 of the transport device D after clamping the sweet potato seedling. In addition, the air is sprayed so that soil does not accumulate in the nozzle when the claw part at the tip of the clamping part b33 enters the soil. The air is sprayed by compressing an air pump by driving the clamping part b33 and using it for blowing air.

<Conveyor belt configuration>
FIG. 10 is a perspective view of the vicinity of the transport device D of the riding transplanter 1 according to the preferred embodiment of the present invention.
10, in a preferred embodiment of the present invention, a guard d8 for adjusting the height of sweet potato seedlings to an appropriate level is provided on the conveyor belt d2 of the conveyor device D. Furthermore, a seedling height adjustment marker d9 is provided near the clip d1. This seedling height adjustment marker d9 is configured so that its front-rear position can be adjusted so that the position at which the sweet potato seedlings are gripped by the claws at the tip of the clamping portion b33 can be adjusted.

<Clip composition>
FIG. 11 is a perspective view of the clip d1 of the riding transplanter 1 according to the preferred embodiment of the present invention.
As shown in Fig. 11, in a preferred embodiment of the present invention, the center of the seedling clamping brush d10 of the clip d1 is formed in a concave shape, which makes it easier for an operator to clamp (set) a sweet potato seedling in the clip d1. Also, the bristles of the seedling clamping brush d10 are configured to face downward on the paper surface of Fig. 11. As a result, when a sweet potato seedling is pushed from above into the clamping brush d10 to be clamped, the seedling pushed in by hand moves while pushing aside the brush bristles, so that it can be easily set, and there is no time-consuming task of setting the sweet potato seedling, improving work efficiency.

In addition, when the seedlings being transported after being set reach the vertical transport area or the upside-down sweet potato seedling removal position P, even if the seedlings try to move out of the clamping brush d10 due to gravity, the brush bristles prevent the seedlings from moving, preventing the seedlings from falling during transport and causing areas where the seedlings are not planted. At the removal position P, the planting clamping tool b3 clamps the seedlings with mechanical force and pulls them out to the rear of the machine, so the brush bristles are configured not to provide enough resistance to pulling out the seedlings to cause them to be missed.

The present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the invention described in the claims, and it goes without saying that these are also included within the scope of the present invention.

1 Ride-on transplanter A Traction vehicle a1 Engine a2 Clutch case a3 Transmission case a4 PTO shaft a5 Joint part a6 Front wheel a7 Rear wheel a8 Driver's seat a9 Steering handle a10 Lift arm a11 Lift rod a12 Cabin a13 Sunshade roof C Control part R Rolling mechanism r1 Rolling motor r2 Rolling roller r3 Rope body r4 Transmission mechanism r5 First gear r6 Second gear M Central transmission mechanism m1 Branch transmission case m2 Branch shaft J Slide rotation mechanism j1 Rotation case j2 Slide case j3 Telescopic transmission shaft j4 Side case j5 Planting device transmission shaft j6 Rotation cylinder j7 Left and right slide cylinder K Machine frame k1 Support frame k2 Sunshade visor k3 Support wheel k4 Operator's seat k5 Boarding step k6 Planter 's seat k7 Placement stand k8 Storage part k9 Irrigation tank k10 Visor frame B Planting device b1 Planting transmission case b2 Planting link mechanism b3 Planting clamp b4 Scraper b5 Air nozzle b11 Planting device input shaft b12 First case part b13 Second case part b14 Third case part b15 Planting clutch shaft b16 Support frame b17 Soil cover wheel mounting frame b18 Soil cover wheel b19 Pressure wheel b20 Pressure wheel mounting frame b21 Drive arm
b22 Support link portion b23 Swing link b31 Connecting shaft b32 Clamping tool holder b33 Clamping portion b34 Bearing b35 Opening/closing cam b36 Spring b37 Protrusion D Conveying device d1 Clip d2 Conveying belt d3 Driving roller d4 First driven roller d5 Second driven roller d6 Tension roller d7 Reserve storage portion d8 Guard d9 Seedling height adjustment marker d10 Seedling clamping brush d21 Upper lateral feed portion d22 Downward feed portion d23 Upward feed portion S1 Ridge detection sensor S2 Tilt sensor S3 Rotation angle sensor

Claims (5)

The vehicle is configured as a towed vehicle coupled to a towing vehicle equipped with a driving force source,
A central transmission mechanism that transmits the driving force received from the towing vehicle to the planting devices disposed on the left and right sides of the vehicle body;
A slide mechanism that allows the planting device to slide left and right,
The planting device is configured to be rotatable up and down and includes a suppressing wheel for suppressing the ridges and an inclination sensor for detecting the left and right inclination of the suppressing wheel;
The control unit is configured to control the slide mechanism to slide the planting device left and right when the crushing wheel is inclined by a first specified angle or more by acquiring detection information from the tilt sensor,
a transport device for transporting the transplant to a planting supply location;
an operator seat provided at the rear of the transport device,
A riding transplanter characterized in that the conveyor belt of the conveyor device is deflected toward the inside of the machine body by a tension roller. The present invention is provided with a rolling mechanism for rolling the machine body, a rotatable soil cover wheel for covering and compacting the soil in which the transplants are planted, and a rotation angle sensor for detecting the rotation angle of the soil cover wheel,
The riding transplanter described in claim 1, characterized in that the control unit is configured to control the rolling mechanism and rotate the body in a direction to reduce the rotation angle of the soil covering wheel when the soil covering wheel rotates more than a second specified angle by acquiring detection information from the rotation angle sensor. 2. The riding transplanter according to claim 1 , further comprising a driving wheel for supporting the load of the operator's seat, the driving wheel being disposed below the operator's seat. The operator seats are disposed on the left and right sides of the central transmission mechanism,
Furthermore, a planting operator's seat is provided in the center of the left and right worker's seats, where a worker who performs planting work sits,
4. The riding transplanter according to claim 1 , wherein the operator's seat does not have a backrest and is disposed rearward of the operator's seat. 2. The riding transplanter according to claim 1, further comprising a storage section for storing transplanted plants and a platform on which materials can be placed, disposed in front of the operator's seat, spare storage sections for storing spare transplants are disposed on the left and right sides, and a visor frame for supporting a sunshade visor is provided at the rear of the operator's seat.