JP2005102568A - Seedling transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seedling transplanter ensuring its operating efficiency to be improved through miniaturizing the machine body and speeding up planting action and also ensuring seedling planting posture to be favorable even in the case of planting vertically long seedlings such as those of Welsh onion. <P>SOLUTION: This seedling transplanter has the following mechanism: Seedlings are received from above into the inside of a seedling planting element 4 in a closed state at the upper side of its lift track and discharged outside by opening the element 4 so as to discharge them downward at the lower side of its lift track to plant them in a farming field. In this transplanter, the longitudinal length of the lift track of the element 4 is shorter than that of a seedling housing section inside the element 4, and there is provided an action element 90 acting so as to scrape from the element 4 the upper parts of seedlings by ascendingly moving between a front-and-back space between the element 4 and the seedlings planted just before by the element 4 from planting the seedlings at the lower side of its lift track till closing at the upper side of its track. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a field seedling transplanter.

  Conventionally, as shown in the following Patent Document 1, a beak-like seedling planting body that moves up and down and opens and closes is provided in a self-propelled machine body, and the seedling planting body is moved up and down while the machine body is moving forward, so that seedling planting is performed. Accept the seedling from the upper side inside the seedling planted body that is closed on the upper side of the lifting trajectory of the body, open the seedling planting body to open downward on the lower side of the raising and lowering trajectory of the seedling planting body, and accept the seedling that was received inside There is a seedling transplanting machine that is configured to release seedlings and plant seedlings in the field.

In the above-mentioned conventional seedling transplanter, when planting long seedlings like seedlings such as leeks, if the top and bottom length of the seedling is longer than the top and bottom length of the raising and lowering trajectory of the seedling planting body, the seedling planting body will reach the upper end position of the trajectory Even if it rises, the lower end of the seedling plant does not rise higher than the upper end of the planted seedling, so that the seedling planter can plant the next seedling before the upper part of the seedling comes out of the seedling planting body. In some cases, the operation may start, and the seedling planting body may catch or fall on the upper side of the seedling planted by the previous planting operation, and the seedling may be tilted forward. In addition, if the vertical length of the raising / lowering trajectory of the seedling planting body is longer than the vertical length of the seedling, the above problem is less likely to occur, but because the seedling planting body is configured to move up and down greatly, the aircraft size is increased, It is difficult to increase the planting operation speed and it is difficult to improve the work efficiency.
Japanese Patent Laid-Open No. 2000-60238

  Therefore, the present invention prevents the vertical length of the raising / lowering locus of the seedling planting body from becoming large, so that the working efficiency can be improved by downsizing the body and speeding up the planting operation, and Thus, even when planting long seedlings up and down, when the seedling planting body rises and the next seedling planting operation starts, the upper part of the seedling planted by the previous planting operation comes out of the seedling planting body Thus, it is an object to prevent the seedling from falling forward and to improve the seedling planting posture.

In order to solve the above-mentioned problems, the present invention has the following configuration.
According to the first aspect of the present invention, a beak-like seedling planting body 4 that moves up and down and opens and closes is provided in a self-propelled machine body, and the seedling planting body 4 is moved up and down while the machine body is moving forward, A seedling is received from above on the inside of the seedling planting body 4 that is closed on the upper side of the lifting locus, and the seedling planted that is opened on the lower side of the raising and lowering locus of the seedling planting body 4 so as to open downward is received. In the seedling transplanter configured to release the outside and plant the seedling in the field, the vertical length of the raising / lowering locus of the seedling planting body 4 is formed shorter than the vertical length of the seedling container inside the seedling planting body 4 and After planting seedlings on the lower side of the trajectory and then closing on the upper side of the lifting trajectory, the seedling planting body 4 and the seedling planting body 4 move up and down between the seedlings planted immediately before An action body 90 that acts so as to scoop out the seedling planting body 4 is provided. Was a seedling transplanting machine, characterized in that was.

According to a second aspect of the present invention, there is provided the seedling transplanter according to the first aspect, wherein the seedling planting body 4 is configured to open and close in the left-right direction so that the seedling planting body 4 can be opened downward.
According to a third aspect of the present invention, when the lifting trajectory during work including forward movement by forward movement of the seedling planting body 4 at the lower end of the seedling planting body 4 is descending, from the descending start point toward the descending end point located on the rear side of the fuselage. The body of the seedling planting body 4 descends through a trajectory swollen to the rear side and rises through a trajectory swollen to the rear side of the aircraft from the ascent trajectory toward the ascending end point located on the front side of the aircraft. The seedling transplanting machine according to claim 1, wherein an ascending / descending trajectory and an advancing speed of the machine body during operation are set.

  The seedling transplanter configured as described above moves the beak-like seedling planting body 4 up and down and opens and closes while moving the body forward. The seedling planting body 4 accepts seedlings from above on the inside of the seedling planting body 4 which is closed on the upper side of the raising / lowering locus of the seedling planting body 4 and opens the seedling planting body on the lower side of the raising / lowering locus of the seedling planting body 4 so as to open downward. Release the accepted seedlings outward and plant the seedlings in the field. The seedling planting body 4 moves up and down with a vertical length shorter than the vertical length of the inner seedling container, but the action body 90 closes on the upper side of the lifting locus after the seedling is planted on the lower side of the lifting locus. The seedling planting body 4 and the seedling planting body 4 are moved up and down between the seedlings planted immediately before and act so as to scoop out the upper part of the planted seedlings from the seedling planting body 4. Furthermore, in the seedling transplanting machine according to claim 2, the seedling planting body 4 opens in the left-right direction on the lower side of the lifting locus, releases the seedling received inside the seedling planting body 4, and transplants the seedling into the field. wear. Further, in the seedling transplanting machine according to claim 3, the lower end portion of the seedling planting body 4 is set at the upper end of the lifting trajectory during the work traveling by setting the lifting trajectory of the seedling planting body 4 with respect to the body and the aircraft forward speed at the time of the work traveling. It descends through a trajectory swollen to the rear of the aircraft from the descending start point to the descending end point located on the rear side of the aircraft, and then the ascending end located on the front side of the aircraft from the ascending start point that becomes the lower end of the elevation trajectory It rises through a trajectory that bulges toward the rear of the aircraft toward the point.

  In the invention according to claim 1, the vertical length of the raising and lowering locus of the seedling planting body is not increased, the working efficiency can be improved by downsizing the body and speeding up the planting operation, and Even when long seedlings are planted like this, when the seedling planting body rises and the next seedling planting operation starts, the upper part of the seedling planted by the previous planting operation is surely It comes out and the planting posture of the seedling is improved.

  In the invention according to the second aspect, the upper part of the seedling planted by the previous planting operation is more smoothly removed from the seedling planted body, and the seedling planting posture is further improved.

  Further, in the invention according to claim 3, since the seedling planting body that is planted by releasing the seedling at the lower end of the lifting trajectory comes to rise to a location far away from the planted seedling, Even when planting with long seedlings in the top and bottom and the space between the plants is narrow, the upper part of the seedling planted by the previous planting operation is more smoothly removed from the seedling planting body, so that the seedling planting posture Becomes even better.

  One of the best modes for carrying out the present invention is shown in Example 1 below. The seedling transplanting machine shown in Example 1 below can improve the work efficiency by reducing the size of the body and speeding up the planting operation so that the vertical trajectory of the seedling planting body does not become large. Even when planting long seedlings, such as leeks, and so on, with a narrow space between the plants, the upper part of the seedling planted by the previous planting operation will surely and smoothly escape from the seedling planting body. As a result, the planting posture of the seedling is improved.

  A seedling transplanter as an embodiment of the present invention will be described below. In the following description, the side on which the steering handle 2 is disposed is the rear, and the opposite side, that is, the side on which the engine 5 is disposed is the front. Then, the right hand side is set to the right and the left hand side is set to the left as viewed from the worker standing at the front side of the body at the rear side of the body. Moreover, the code | symbol N in a figure shows the planted seedling, G shows a planting field scene.

  The seedling transplanting machine of this example has a configuration in which a beak-like seedling transplanting body 4 that can be opened and closed is connected to a lifting link mechanism 3 that is driven to move up and down on a machine body that includes a traveling device 1 and a steering handle 2. Yes.

  In the illustrated example, the traveling device 1 includes an engine 5, a pair of left and right rear wheels 6 and 6 that are driven and rotated by transmission of the power of the engine 5, and left and right wheels that are rotatably supported in front of the wheels 6 and 6. A pair of front wheels 7 and 7 is provided.

  A mission case 8 is disposed at the rear of the engine 5, and the mission case 8 has a case portion extending from the left side of the engine 5 to the left side of the engine 5, and this is connected to the left side of the engine 5. The output shaft of the engine 5 enters the case portion, and the power is transmitted to the transmission mechanism (the traveling part system transmission transmission part C1 and the working part system transmission transmission part C2) in the transmission case 8. The transmission cases 9 and 9 are rotatably attached to the left and right sides of the transmission case 8, and the front ends of the wheel drive shafts extending from the transmission case 8 to the left and right outer sides are centered on the transmission cases 9 and 9. The power for traveling that has entered and has passed through the traveling part system transmission transmission C1 in the transmission case 8 is transmitted to the transmission mechanism in the transmission cases 9 and 9. Then, the driving power is transmitted to the axles 10, 10 extending rearward of the machine body and projecting to the rear end side via the transmission mechanism in the transmission cases 9, 9, and the rear wheels 6, 6 are driven to rotate. It is supposed to do.

  Also, upwardly extending arms 11, 11 are integrally attached to the attachment parts of the transmission cases 9, 9 to the transmission case 8, and this is the tip of the piston rod of the lifting hydraulic cylinder 12 fixed to the transmission case 8. Are connected to the left and right sides of a balance rod 13 that is pivotably mounted around a vertical axis. The right side of the connecting portion is connected by a rod 14, and the left side is connected by a left / right horizontal control hydraulic cylinder 15 which can be expanded and contracted.

  When the lifting / lowering hydraulic cylinder 12 is actuated and the piston rod projects rearward, the left and right arms 11 and 11 are rotated rearward, and accordingly the transmission cases 9 and 9 are rotated downward, and the airframe. Rises. On the contrary, when the piston rod of the elevating hydraulic cylinder 12 is retracted forward, the left and right arms 11 and 11 are rotated forward, and accordingly the transmission cases 9 and 9 are rotated upward so that the aircraft is Descend. The raising / lowering hydraulic cylinder 12 is configured to operate the airframe to a set height with respect to the height of the heel surface based on the detection result of the sensor S that detects the height of the heel surface relative to the airframe. It is also configured to operate so as to raise or lower the aircraft by human operation of the operation tool L arranged in the vicinity of the steering handle 2.

  Further, when the left / right horizontal control hydraulic cylinder 15 expands / contracts, the balance rod 13 rotates around the vertical axis connected to the tip of the piston rod of the lifting hydraulic cylinder 12 at the center of the left / right to transmit left / right transmission. Cases 9 and 9 are moved up and down alternately to incline the aircraft from side to side. The left / right horizontal control hydraulic cylinder 15 is configured to operate so that the airframe is horizontally horizontal based on a detection result of a sensor that detects the right / left inclination of the airframe relative to the left / right horizontal.

  The left and right front wheels 7 and 7 are fixed to the side of the lower end portion of the arm portion extending below the left and right side portions of the front wheel support frame 16 attached to the left and right central positions below the engine 5 so as to be rotatable around the front and rear axis. It is attached to the axles 17 and 17 rotatably. Accordingly, the left and right front wheels 7 and 7 are capable of rolling around the longitudinal center of the left and right center of the aircraft.

  The steering handle 2 is attached to a rear end portion of a body frame 2b having a front end portion fixed to the mission case 8. The airframe frame 2b is disposed at a position deviated from the right and left center of the airframe to the right side and extends rearward, and extends obliquely rearward and upward from the front and rear intermediate portion. The steering handle 2 extends rearward from the rear end portion of the body frame 2b to the left and right, and the rear end portions thereof serve as grip portions 2a and 2a of the steering handle 2. The left and right grip portions 2a, 2a of the steering handle 2 are set to an appropriate height so that the operator can easily grip the grip portions 2a, 2a with hands. In the example shown in the figure, the grip portions 2a, 2a are divided into left and right, but the left and right rear end portions of the steering handle 2 may be connected to each other left and right, and the connecting portion may be used as the grip portion.

  Although the traveling device 1 has a four-wheel configuration, it can also have a two-wheel configuration with only a pair of left and right drive wheels, and a pressure suppressor that rolls on the upper surface is provided instead of the front wheels. It can also be configured. Moreover, it is good also as a crawler type traveling apparatus.

Next, the lifting link mechanism 3 and the seedling planting body 4 will be described.
The seedling planting body 4 is a beak-like seedling planting body that is moved up and down by the lifting link mechanism 3 and opened and closed by the opening and closing mechanism of the seedling planting body. The seedling planting body 4 is moved up and down while the machine body is moving forward. The seedling planting body 4 is opened on the upper side of the raising / lowering locus of the seedling planting body 4 so as to receive the seedling from the upper side inside the seedling planting body 4 in the closed state and opened on the lower side of the raising / lowering locus of the seedling planting body 4 Then, the seedling received inside is discharged to the outside and the seedling is planted in the field.

  The elevating link mechanism 3 is mounted on a planting transmission case 18 that includes a transmission mechanism that receives power for driving the seedling transplanting work section that has passed through the work section transmission transmission section C2 in the mission case 8. As shown in the figure, the planting transmission case 18 is fixed to the first case portion 18a whose front portion is connected to the rear portion of the mission case 8 and extends rearward and obliquely upward therefrom, and the upper left portion of the first case portion 18a. A second case portion 18b extending to the left side from there, a third case portion 18c fixed to the left outer end portion of the second case portion 18b and extending rearward therefrom, and a rear left side portion of the third case portion 18c. The fourth case portion 18d extends leftward from the fourth case portion 18d, and the fifth case portion 18e is fixed to the left outer end portion of the fourth case portion 18d and extends rearward therefrom. In these first to fifth case portions 18a to 18e, a transmission mechanism for transmitting power for driving the lifting link mechanism 3 to move up and down is provided. The transmission mechanism built in the first case portion 18a includes an intermittent drive mechanism K that intermittently stops the lifting link mechanism 3 and the seedling planting body 4 at or near the highest position of the lifting movement. The elevating link mechanism 3 and the clutch mechanism for stopping the elevating movement of the seedling planting body 4 are provided. The intermittent drive mechanism K performs a one-rotation stop mechanism for causing the seedling planting body 4 to perform a one-cycle planting operation and automatically stopping the seedling planting body 4 at a set position, and an operation for starting the one-plant planting operation of the seedling planting body 4 by this one-rotation stop mechanism. As a configuration in which a one-rotation start mechanism is provided and the operation timing of the one-rotation start mechanism is adjusted by the inter-change change transmission unit C3, the stop interval of the seedling planting body 4 is adjusted by this adjustment, so Is adjusted and adjusted. In addition, the one-plant planting operation of the seedling planting body 4 by the one-rotation stop mechanism is configured to be driven and rotated by the power transmitted without passing through the inter-change changing transmission unit C3. Accordingly, even if the planting planting change is changed by the inter-plant changing transmission unit C3, the raising / lowering driving speed of the planting planting body 4 with respect to the aircraft forward speed is not changed, and the planting planting unit 4 is set with respect to the ground during work traveling. It moves up and down along the trajectory.

  And the raising / lowering link mechanism 3 is the 1st raising / lowering arm 20 connected with the right and left two places of the connection shaft 19 of the left-right direction provided in the front side of the right and left seedling planting body 4, and the rear side of the seedling planting body 4 And a second lifting arm 22 rotatably connected to the left side of the connecting shaft 21 in the left-right direction. And the lower end part of the 1st raising / lowering arm 20 is rotatably connected with the front-end | tip part of the 1st rocking | swiveling arm 23 attached to the attachment shaft extended to the right side from the lower part of the 3rd case part 18c, The lower end portion of the second lifting arm 22 is rotatably connected to the tip end portion of the second swing arm 24 that is swingably attached to a mounting shaft that extends to the right side from the lower rear side lower portion of the fifth case portion 18e. Further, an intermediate portion of the first lifting arm 20 protrudes from a right side portion of the third case portion 18c and is fixed to a first drive shaft 25 that is driven and rotated, and is rotatable with a tip portion of the first drive arm 26 that is driven and rotated. The intermediate portion of the second elevating arm 22 is connected to the front end portion of the second drive arm 28 that rotates and is fixed to the second drive shaft 27 that projects from the rear right side of the fifth case portion 18e and rotates. Connect freely. Therefore, when the first drive arm 26 and the second drive arm 28 are driven and rotated by transmission of power by the transmission mechanism in the planting transmission case 18, the first lift arm 20 and the second lift arm 22 are moved up and down while swinging. As a result, the lower end portion of the seedling planting body 4 moves up and down while drawing a trajectory T as shown in the drawing. When the beak-like seedling planting body 4 is lowered to the lower end of its ascending / descending locus, it opens and operates to release the seedlings in the seedling planting body 4 to the soil in the field.

  Ascending / descending trajectory MT during operation including forward movement by forward movement of the seedling transplanting body 4 of the seedling transplanting machine of the present example is as follows: The aircraft forward speed v during work travel is set. That is, as shown in FIG. 15 (a), the lifting trajectory MT at the time of working traveling at the lower end of the seedling planting body 4 moves from the descending start point at the upper end of the lifting trajectory MT to the rear side of the machine while moving up and down. It descends while drawing a descending trajectory d that swells toward the rear end of the aircraft toward the lowering end point, which is the lower end, and the ascending end point, which is the upper end of the ascending trajectory MT while moving from the ascending start point that is the lower end of the ascending trajectory MT to the front side of the aircraft Ascending and descending trajectory that rises while drawing a rising trajectory u that bulges toward the rear of the aircraft.

  On the other hand, in the conventional seedling transplanting machine, as shown in FIG. 15 (b), the seedling planting body 4 ′ has an elliptical trajectory that is long in the vertical direction in the side view of the body of the seedling planting body 4 ′. The vehicle forward speed v ′ during work travel is set as appropriate, and the lift trajectory MT ′ during work travel at the lower end of the seedling planting body 4 ′ is the front side of the airframe from the descent start point at which the lift trajectory MT ′ is the upper end. And descending while drawing a descent trajectory d 'swelled toward the front of the aircraft toward the descent end point, which is the lower end of the up / down trajectory MT', and move from the ascending start point, which is the lower end of the up / down trajectory MT ', to the front of the aircraft. However, it is provided on an elevation trajectory that rises while drawing an elevation trajectory u ′ that swells toward the rear end of the aircraft toward the rise end point that is the upper end of the elevation trajectory MT ′.

  In the case of the raising / lowering trajectory MT ′ at the lower end of the seedling planting body 4 ′ in FIG. 15 (b), the raising / lowering operation for planting the seedling ends one cycle, and the seedling planting body 4 ′ When the seedling planting body 4 ′ rises to the upper end portion or the vicinity thereof, the seedling planting body 4 ′ moves up to a position that is in front of the planted seedling N but has a small front-to-back distance w ′ with the planted seedling N. For this reason, in the case of a seedling that is long and vertically planted, such as a leek seedling, and planted between narrow stocks, the seedling planting body 4 ′ is raised to a position close to the front and back on the upper side of the seedling N planted. The descending action for planting the next seedling starts, and the seedling planting body 4 'hooks the top side of the seedling N planted and falls forward, or the seedling planting body 4' is for planting the next seedling. When it closes, the upper side of the seedling N planted before may be sandwiched and fall down as it is to kill the seedling. In addition, when the seedling planting body 4 ′ is configured to open and close forward and backward, the rear side portion of the seedling planting body 4 ′ opened front and rear is closer to the planted seedling N, and such a phenomenon. Is more likely to occur.

  However, in the case of the traveling trajectory MT at the lower end of the seedling planting body 4 in FIG. 15A, the lifting operation for planting the seedling is completed for one cycle, and the seedling planting body 4 is at the upper end of the lifting trajectory MT. Or when it raises to the vicinity, the seedling planting body 4 moves up to a place where the front-to-back distance w with the seedling N planted in front of the planted seedling N becomes large. For this reason, even in the case of a seedling that is long in the vertical direction and planted between narrow strains such as a leek seedling, the seedling planting body 4 rises to a position far away from the upper side of the planted seedling N and moves forward. The descent operation for planting the seedlings of the seedlings begins, the seedling planting body 4 hardly catches the seedlings N planted by the seedling planting body 4, and the planting posture of the seedlings is improved. Become.

  And the location Y which closes after the seedling planting body 4 shown in FIG. 15 (a) rises in the open state and closes is in the lifting trajectory MT during work including forward movement due to forward movement of the lower end of the seedling planting body 4 It is set at the front side of the machine body from the lower end of the lifting locus. As a result, it is less likely that the seedling planting body 4 descends across the upper end of the seedling N planted and falls the seedling forward, and the planting posture of the seedling is further improved.

  The seedling planting body 4 of the seedling transplanting machine shown in FIGS. 1 to 14 is a seedling planting body that has two sharp beak-shaped sharp points 4N and 4N that are pointed downward, and enables two-row staggered planting. is there. This seedling planting body 4 includes a beak-shaped sharpened portion 4N for planting the left-hand strip and a beak-shaped sharpened portion 4N for planting the right-hand strip, and the lower portions of the left-handed sharpened portion 4N and the right-hand sharpened portion 4N are bifurcated. The left sharp part 4N and the upper part of the right sharp part 4N are formed in a state of being joined to each other. The left and right sharpened portions 4N and right sharpened portion 4N, which are divided into left and right sides, are set so that the lower end portions of the left sharpened portion 4N and the right sharpened portion 4N are set to have a horizontal spacing that matches the horizontal spacing of the right and left striped plants. The front-rear interval is set to match the width of the planted seedling in the front-rear direction.

  And the seedling planting body 4 for Nijo zigzag planting formed as described above is configured to open and close in the left-right direction. Specifically, the seedling planting body 4 provided with the left sharpened part 4N and the right sharpened part 4N on the left and right is divided into the left outer seedling planted body 4a, the left and right center side seedling planted body 4b, and the right outer seedling planted body 4c. The right and left center side seedling planting body 4b divides the inside of the seedling planting body 4 into left and right parts, and the seedling housing part in the seedling planting body 4 is arranged on the left side sharpened part 4N side seedling containing part 4r and the right side sharpened part 4N side. Forming a seedling container 4r, and configured to move the left outer seedling planting body 4a and the right outer seedling planting body 4c from the position adjacent to the left and right central seedling planting body 4b to the left and right outer sides, The left sharpened portion 4N and the right sharpened portion 4N of the seedling planting body 4 for two-row staggered planting are configured to be openable and closable in the left-right direction. As a result, the seedling planting body 4 for planting the Nijo zigzag contains seedlings in the seedling accommodating portions 4r, 4r of the left sharpened portion 4N and the right sharpened portion 4N and descends to the field, and each seedling accommodating portion 4r. The seedlings housed in 4r are released to the field, and the seedlings are planted in the field, and this is periodically repeated while the aircraft is moving forward, so that two staggered plants can be planted. The left and right center-side seedling planting body 4b is composed of two flat plates whose upper part is joined to each other and whose lower part is divided into left and right parts, and is configured integrally with the partition member 35b of the seedling guide body 35. Accordingly, when the lower part of the outer seedling planting body 4a, 4c moves away from the left and right center side seedling planting body 4b to open the seedling planting body 4, and the seedling planting body 4 rises, the outer seedling planting body 4a, 4c Even if the hollow for receiving and accommodating the seedling is formed inside the lower end, the seedlings accommodated on the bottom side of each seedling accommodating part 4r, 4r are the left and right center side seedling planting bodies 4b configured by flat plates. , And the seedlings are not lifted as the seedling planting body 4 is lifted, so that the seedling accommodating parts 4r, 4r of the left sharp part 4N and the right sharp part 4N are removed. The seedlings housed inside can be planted at an appropriate depth. In order to plant Nijo zigzag in a state where two seedlings are planted in one place as in the present invention with this seedling planting body 4, the seedling supply device 42 is accommodated in each seedling of the left sharpened portion 4N and the right sharpened portion 4N. Two seedlings are configured to be fed into the parts 4r and 4r. In addition, if it is configured to supply seedlings one by one into the seedling accommodating parts 4r, 4r of the left sharpened part 4N and the right sharpened part 4N, Nijo staggered planting with seedlings planted one by one It becomes.

  In the upper part of the seedling planting body 4, a seedling guiding body 35 having cylindrical seedling guiding paths 35r and 35r formed on the inside and opened vertically is provided. The seedling guide body 35 guides seedlings falling from above through the seedling guide passages 35r and 35r to the seedling accommodating portions 4r and 4r inside the seedling planting body 4 below. In addition, the seedling guide passages 35r and 35r of the seedling guide body 35 are formed above the seedling receiving portions 4r and 4r inside the seedling planting body 4 and are received at the inner bottom portion of the seedling planting body 4. In the case where the seedlings are long seedlings, the seedling guide body 35 surrounds the upper side of the seedlings, and the seedlings are the seedling accommodating parts 4r, 4r inside the seedling planting body 4 and the seedling guiding body that continues thereabove. The 35 seedling guide passages 35r and 35r are accommodated. That is, the seedling guide passages 35 r and 35 r of the seedling guide body 35 also serve as part of the seedling storage portions 4 r and 4 r in the seedling planting body 4.

  The seedling guide body 35 of this example is provided with a partitioning member 35b for partitioning the seedling planting body 4 to the left and right inside the seedling guide body 35, corresponding to the configuration in which the seedling housing parts 4r and 4r are partitioned to the left and right as described above. Thus, seedling guide paths 35r and 35r are formed on the left and right. In addition, the partition member 35b of the seedling guide body 35 and the right and left center side seedling planting body 4b of the seedling planting body 4 are integrally configured by being connected or integrally formed. Furthermore, the right and left seedling guide passages 35r and 35r of the seedling guide body 35 are formed in the seedling planting body 4 and above the left and right seedling accommodating portions 4r and 4r. Further, in this example, the vertical length of the seedling accommodating parts 4r, 4r inside the seedling planting body 4 and the seedling guiding passages 35r, 35r of the seedling guiding body 35 following the upper part thereof is set to be vertically It is longer than the length.

  While providing the rotation shafts 4d and 4d in the front-rear direction as the pivots for opening and closing of the left outer seedling planting body 4a and the right outer seedling planting body 4c of the seedling planting body 4 on the upper left and right sides of the seedling planting body 4, Left and right connection shafts 19 and 21 for rotatably connecting the seedling planting body 4 to the pair of front and rear lifting arms 20 and 22 for driving the seedling planting body 4 to move up and down are provided on both the front and rear sides of the upper part of the seedling planting body 4. It has a configuration. Accordingly, the seedling planting body 4 can be moved up and down in an appropriate front-rear posture by connecting with the pair of front and rear lifting arms 20 and 22 before and after the seedling planting body 4, and the seedling planting body 4 can be opened and closed in the left-right direction. The seedling planting body 4 is less likely to be pushed down due to the disorder of the front and back posture of the seedling planting body 4, and the seedling planting body 4 is less likely to catch the seedling by the opening operation in the left-right direction. Becomes even better.

  Further, the connecting shafts 19 and 21 in the left and right direction for connecting the seedling planting body 4 to the lifting arms 20 and 22, and the rotation shafts 4 d and 4 d in the front and rear direction of the left outer seedling planting body 4 a and the right outer seedling planting body 4 c are provided. The seedling guide body 35 is supported. Therefore, the seedling guide body 35 can also be used as a support member for the seedling planting body 4, the configuration of the seedling planting body 4 can be simplified and reduced in weight, and the seedling planting body 4 can be driven up and down more accurately, so that the seedling planting posture can be achieved. Becomes even better.

  In addition, the left outer seedling planting body 4a extends in the form of an arm rightward on the upper front and rear sides, and each tip thereof is rotatably connected to the right rotating shaft 4d. The upper and lower sides of the upper part extend in the form of an arm to the left, and the respective front ends thereof are rotatably connected to the left rotation shaft 4d. The left-side seedling planted body 4a has an arm-like portion extending to the right on both the front and rear sides, and a right-side seedling planting body 4c has an arm-like portion extending to the left on both the front and rear sides. A nut having a shaft portion in the front-rear direction is fitted and connected to a long hole provided at the left and right central position of 4d, and one side of the left outer seedling planting body 4a and the right outer seedling planting body 4c is interlocked with the operation of the other side. So that both can be opened and closed simultaneously. Further, the left outer seedling planting body 4a and the right outer seedling planting body 4c are connected to each other in a direction in which the seedling planting body 4 is closed by a spring. Furthermore, an opening / closing arm 31 for opening and closing the left outer seedling planting body 4a and the right outer seedling planting body 4c is rotatably connected to the base side portion of the second lifting arm 22, and the distal end portion of the opening / closing arm 31 is connected. And the arm portion extending from the upper rear side of the left outer seedling planting body 4a are connected by a connecting rod 32. A shaft fixed to the tip of the second drive arm 28 that pivotally connects the second lifting arm 22 when the seedling planting body 4 is lowered to the lower end of its lifting locus at the middle part of the opening / closing arm 31. The open / close arm 31 is rotated up and down by the action of the cam 34 fixed to the cam 34 and the spring for pressing the open / close arm 31 against the cam 34. When the open / close arm 31 is rotated upward, the left outer seedling planting body 4a is rotated to the right. The right outer seedling planting body 4c is rotated upward about the left rotation shaft 4d in conjunction with this, and the right and left seedling accommodating parts 4r, 4r inside the seedling planting body 4 are rotated. Open at the same time. And just before the seedling planting body 4 reaches the upper end of the raising / lowering locus, it is released from the opening action by the cam 34 and the seedling planting body 4 is closed. The cam 34, the opening / closing arm 31, the connecting rod 32, and the like constitute an opening / closing mechanism of the seedling planting body 4, but another known opening / closing mechanism may be employed.

  The pressure-reducing bodies 36, 36 are grounding bodies arranged in the vicinity of the left and right outer sides of the descending lower end portion of the seedling planting body 4, and in this example, are composed of grounded rolling wheels. The pressure-reducing bodies 36, 36 are attached to the rear side of the left and right support frames 37, 37 whose front part is rotatably attached to the middle part of the body frame 2b so as to be rotatable about the horizontal axis. . The rear portions of the left and right support frames 37, 37 have connecting portions 38 that are connected to each other, and the connecting portion 38 and a rear portion that is attached to a support member 39 provided on the rear side of the machine body so as to be movable up and down by setting a lowering lower limit position. The lower end portion of the support rod 40 is attached around the horizontal axis. The rear support rod 40 is equipped with a weight 41 for increasing the suppression force of the suppression members 36, 36.

  The seedling supply device 42 of this example is configured to drop and supply a seedling to the seedling planting body 4 from above, and the cylindrical body 43... Opened up and down and the lower side of the cylindrical body 43. A plurality of seedling containers 45 that have bottom lids 44 that open and close the openings 43a and that are connected to each other in a loop shape, and the seedling containers 45 that pass through above the seedling planting body 4 A seedling container moving mechanism 46 that rotates around a loop-shaped trajectory that is non-circular in plan view and a bottom lid opening mechanism 47 that opens the bottom cover 44 of the seedling container 45... At a position above the seedling planting body 4 are provided. It has a configuration. Therefore, this seedling transplanting machine can perform the seedling supply work with a margin and can improve the work efficiency.

  The seedling supply device 42 has cylindrical outer peripheral portions 43c... On the outer periphery of the seedling containers 45, and has an engaging portion 48 that engages with the cylindrical outer peripheral portions 43c. A plurality of connecting bodies 49 for connecting the two seedling containers 45 are provided, and the engaging portions 48 of the connecting bodies 49 are rotatably engaged with the cylindrical outer peripheral portions 43c of the seedling containers 45. The plurality of seedling containers 45 are connected to each other so that the adjacent seedling containers 45 are rotatably connected with the cylindrical outer peripheral portions 43c as rotation axes. Accordingly, in this seedling transplanter, the seedling containers 45 are rotated while the adjacent seedling containers 45 are rotated around the cylindrical outer peripheral portion 43c of the seedling containers 45 as a rotation axis. Therefore, the fluctuation of the interval between the seedling containers 45 is less likely to occur, so that the seedling supply to the seedling planting body 4 is appropriately performed, so that an appropriate seedling can be transplanted, and the number of the seedling containers 45. The upper opening 43b of the seedling container can be formed as wide as possible, and the seedling supply operation to the seedling container 45 can be made as easy as possible while making the body compact. It can be done.

  In addition, the seedling supply device 42 attaches a bottom lid 44 to the cylindrical bodies 43 of the seedling containers 45 so as to be capable of opening and closing, and one of the connecting bodies 49 is attached to each of the seedling containers 45. Each of the joints 49 is attached integrally, and the engaging part 48 of the connecting body 49 is rotatably engaged with the cylindrical outer peripheral part 43c of the adjacent seedling container 45, thereby connecting the seedling containers 45 to each other. It is configured. Thereby, this seedling transplanter rotates the circumference while the adjacent seedling container 45 rotates around the cylindrical outer peripheral portion 43c of the seedling container 45 as a rotation axis, When the seedling containers 45 are rotated, the connecting bodies 49 are moved in a posture along the circumferential direction, and the seedling containers 45 are integrally attached to the cylindrical bodies 43. The mounting portions 50 of the lids 44 are moved while maintaining a state where the mounting portions 50 are positioned in the setting direction with respect to the rotation direction. Therefore, the bottom lids 44 of the seedling containers 45 are always opened in the same direction at the upper position of the seedling planting body 4, and the opening of the bottom lids 44 by the bottom lid opening mechanism 47 operates properly. As a result, the seedling supply to the seedling planting body 4 is more appropriately performed, and the seedling can be transplanted accurately.

  Further, the seedling supply device 42 of the seedling transplanter is configured to rotate around a locus having a section in which the seedling containers 45... Move linearly in the left-right direction in plan view of the body, and the seedling containers 45. Is arranged so as to pass above the seedling planting body 4 in a section moving linearly in the left-right direction, and when two adjacent seedling container bodies 45, 45 pass above the seedling planting body 4, The bottom lids 44 and 44 of the two seedling containers 45 and 45 are opened, and two seedlings are supplied to the inside of the sharpened portion 4N with respect to one sharpened portion 4N pointed below the seedling planting body 4. Therefore, the seedling supply device 42 for supplying seedlings to the seedling planting body 4 for simultaneously planting two seedlings can be configured in a simplified manner, and the seedlings are accommodated so that the seedlings can be easily supplied to the seedling containers 45. Even if the seedling container moving mechanism 46 is driven so that the bodies 45 move continuously, the seedlings are transferred to the two seedling storage parts 4Lr and 4Rr of the seedling planting body 4 with the same fall trajectory. The seedlings can be supplied to the seedling planting body 4 that can be dropped and supplied from 45..., And two seedlings can be planted at the same time.

  By the way, when it is set as the structure which supplies two seedlings to the seedling planting body 4 like this example, while the planting raising / lowering operation | movement of the seedling planting body 4 carries out 1 cycle operation | movement, two seedling containers 45 ... When the seedling planting body 4 moves around and is positioned at the set position on the upper side of the raising / lowering locus, the two seedling container bodies 45, 45 each housing the seedling are both upper entrances of the seedling guiding passages 35r, 35r of the seedling guiding body 35 It is comprised so that it may be in the state located above. Thereby, the seedling container 45... Which can supply two seedlings at a time without causing seedling supply leakage to the seedling planting body 4 and has not been fed after passing over the seedling planting body 4. The seedling can be supplied to the seedling planting body 4 without leaving so that it does not occur, so that the seedling supply operation can be performed with sufficient margin and the seedling can be supplied reliably.

  Below, the structure of the seedling container moving mechanism 46 of the seedling supply apparatus 42 is demonstrated. That is, the moving action bodies 51 and 51 around which the seedling containers 45 connected in a loop shape are wound are provided on the left and right sides of the machine body, and the moving action bodies 51 and 51 are driven and rotated. 45... Is configured to move around by drawing a long oval locus to the left and right in the plane view of the aircraft. A plurality of recesses are formed on the outer periphery of the moving action bodies 51 and 51 at intervals corresponding to the connection intervals of the seedling containers 45... Thus, the seedling containers 45 are provided so as to be reliably moved. The drive structure of the moving action bodies 51 and 51 is such that the power is taken out from the transmission path on the lower transmission side of the inter-change change transmission unit C3 on the upper transmission side of the intermittent drive mechanism K that intermittently drives the seedling planting body 4 to move. The bodies 51 and 51 are continuously driven to rotate, and the seedling containing bodies 45 are continuously moved around. Specifically, a rotating shaft 53a that continuously rotates is projected from the left side of the first case portion 18a of the planting transmission case 18, and the transmission shaft 53b is connected to the rotating shaft 53a via a universal joint, and the transmission shaft 53b is connected to the transmission shaft 53b. Thus, the left moving action body 51 mounted to rotate integrally with a rotation shaft 55 that is transmitted to a transmission case 54 provided on the left side of the machine body and protrudes upward from the transmission case 54 is driven and rotated. Further, a sprocket 56 is attached to the rotary shaft 55 so as to rotate integrally therewith, and a transmission chain 59 is wound around the sprocket 56 and a sprocket 58 attached so as to rotate integrally with the rotary shaft 57 of the right moving action body 51. Thus, both the left and right moving action bodies 51 and 51 are driven and rotated. By the way, in the case of the configuration in which the one side moving action body is driven and rotated, the row of seedling container bodies that are taken into the driving action body that is driven to rotate is in a tensioned connection state, but from the moving action body that is driven to rotate The row | line | column of the seedling container by the side of drawing out will be in the loose connection state. For this reason, the seedling container may be removed from the part where the moving action body engages with the seedling container at the place where the seedling container is drawn out from the driving action body that rotates. The row of seedling containers after the seedling containers have been fed out is disturbed, the friction with the members that support the lower side of the row of seedling containers becomes large and suddenly caught, The movement may not be performed smoothly. However, since both the left and right moving action bodies 51 and 51 are driven and rotated as described above, the seedling container bodies 45 are detached from the moving action bodies 51 and 51 and the rows of the seedling container bodies 45 are disturbed. This makes it difficult for the seedling container 45 to move smoothly, so that the seedling can be supplied to the seedling planting body 4 and the seedling transplanting operation can be continued well.

  Note that the transmission mechanism in the transmission case 54 has an input shaft 60 projecting to the front side of the transmission case 54 and the front end portion thereof is connected to the rear end portion of the transmission shaft 53 via a universal joint for transmission rotation. In the transmission case 54, a bevel gear 61 formed at the rear end portion of the input shaft 60 is provided so as to mesh with a bevel gear 62 attached so as to rotate integrally with the rotating shaft 55 of the moving action body 51. Therefore, the rotational power transmitted through the transmission shaft 53 is converted into rotation around the rotation shaft 55 in the vertical direction in the transmission case 54 to transmit and rotate the moving action body 51. In this example, the rotational movement direction D of the seedling containers 45 is set so that the seedling containers 45 moved to the rear side of the seedling supply device 42 are moved to the right side. An operator can easily supply seedlings in a seedling supply operation mode in which the seedling supply device 42 is standing on the left side at the rear side position and supplied to the seedling containers 45 with the right hand.

  As described above, the power for driving the seedling supply device 42 is taken out from the transmission path on the lower transmission side of the inter-change change transmission unit C3 on the upper transmission side of the intermittent drive mechanism K that intermittently drives the seedling planting body 4. Yes. Thereby, the seedling planting body 4 is intermittently driven, and the seedling feeding device 42 is in the seedling transplanting machine configured to be continuously driven, and the seedling planting body 4 is intermittently stopped at the upper part of the lifting trajectory T. In the configuration in which the inter-change change transmission unit C3 is provided on the transmission upper side of the intermittent drive mechanism K so that the time can be changed to change between the seedling planting stocks, the power for driving the seedling supply device 42 is taken out as described above. Since it is configured, even if the intermittent stop time of the seedling planting body 4 that is intermittently driven is changed to change between seedling planting stocks, the operation speed of the continuously driven seedling supply device 42 is also changed accordingly. Therefore, the seedling supply from the seedling supply device 42 to the seedling planting body 4 is satisfactorily performed, and the seedling transplanting work can be performed well even if the seedling planting stock is appropriately changed according to the type of the crop or the like. It can be done. The clutch means CL1 on the seedling supply device 42 side includes a mechanism that automatically cuts the power when the transmission load exceeds a set value. Further, the clutch means CL3 having a mechanism for automatically cutting the power when the transmission load exceeds a set value also in the working part system transmission path before the power branches to the seedling planting body 4 side and the seedling supply device 42 side. Is provided.

  The support structure of the seedling supply device 42 is configured as follows. An aircraft frame 2b that extends rearward from the front side of the aircraft where the engine 5 and the transmission case 8 are arranged between the left and right wheels 6, 6; The steering handle 2 is attached to the rear end portion of the airframe frame 2b, and a first support frame 63 extending rearward from the airframe front side toward the upper side of the airframe is provided. A seedling container in which a rear side is connected to the body frame 2b, a second support frame 64 extending from the support frame 63 to the left and right outer sides is provided, and a loop shape is connected to both left and right sides of the second support frame 64. 45... Are configured to support the rotating shafts of the left and right moving action bodies 51, 51 that move in a circular manner by drawing a long elliptical locus on the left and right in the plane view of the body. Further, the second support frame 64 is divided into a base frame portion 64a on the side connected to the first support frame and a support portion side frame portion 64b on the side supporting the rotating shafts of the moving working bodies 51 and 51. The support part side frame part 64b is provided so as to be movable and adjustable in the left-right direction with respect to the base part side frame part 64a.

  In the seedling supply device 42, the seedling containers 45 are provided with guide bodies 65, 65, 65 for guiding the movement along the circular movement trajectory inside and outside the circular movement trajectory of the seedling container 45. . On the other hand, the seedling containers 45 are formed with protrusions 66 that protrude inward and outward of the orbital movement trajectory, and the guide bodies 65, 65, 65 are located above the protrusions 66 and the seedling container 45. Are arranged so as to be sandwiched between the inside and outside of the circular movement locus. Thereby, the surrounding movement of the seedling containers 45 is performed accurately and smoothly, and the seedling containers 45 are arranged so as to pass above the seedling planting body 4 in the section SS in which the seedling containers 45 move linearly in the left-right direction. In the configuration, the seedling container 45... Swings back and forth during the circular movement, and the seedling container 45... Shifts back and forth when passing over the seedling planting body 4. Can be prevented from being performed accurately. Moreover, since the guide bodies 65, 65, 65 are located above the protrusions 66 formed in the seedling containers 45, the seedling containers 45 are prevented from being lifted during the circular movement, and the seedling containers 45 ... The circumferential rotation of the lens is accurately performed.

  Below the orbital movement trajectory of the seedling containers 45, there is a bottom in which the seedling containers 45 are opened by a downward rotation while the seedling containers 45 are moving around and other than the position above the seedling planting body 4. A support 67 that supports the lid 44 in a closed state is provided along a circular movement locus. Therefore, the above-described configuration of the guide bodies 65, 65, 65 and the projecting portion 66 is the seedling that the bottom cover 44 provided at the bottom of the seedling container 45 is opened during circular movement and is accommodated in the seedling container 45. However, it is possible to prevent the seedling from being damaged by protruding from the gap generated when the bottom lid 44 is opened. Moreover, in this example, since the said protrusion part 66 was formed in the connection body 39 ... integrally provided in each of the seedling container 45 ..., the structure can be simplified. The support body 66 and the guide bodies 65, 65, 65 are attached to and supported by an attachment member 68 attached to the first support frame 63.

  A seedling placement unit 69 for placing and placing seedlings to be supplied to the seedling supply device 42 is provided in an inner part of the orbital movement trajectory of the seedling container 45... Of the seedling supply device 42. The seedling unit 69 also serves as a cover that covers the inside of the circular movement locus of the seedling container 45 of the seedling supply device 42. Therefore, when the operator supplies seedlings from the rear side of the seedling supply device 42 to the seedling container 45..., The seedlings can be temporarily placed on the seedling placement unit 69. The placed seedlings can be easily taken out from an operator who supplies seedlings to the seedling container 45, so that the seedling supply operation can be easily performed and the work efficiency can be improved. Further, since the seedling holder 69 is provided so as to protrude upward from the upper end of the seedling container 45 of the seedling supply device 42, the seedling placed in the seedling holder 69 is caught by the seedling container 45 and is carried around. It is prevented. Moreover, since the bottom part of the seedling placement part 69 is inclined to the rear side of the machine body, it is easy to take out the seedling when replenishing the seedling, and the work efficiency is improved.

A seedling stand 80 for preliminarily placing seedlings to be supplied to the seedling supply device 42 is attached to the front side of the seedling supply device 42 in the upper part of the machine body.
The bottom lid opening mechanism 47 that opens the bottom lids 44 of the seedling containers 45 of the seedling supply device 42 at an upper position of the seedling planting body 4 will be described below.

  First, as described above, below the orbital movement trajectory of the seedling containing bodies 45..., The seedling containing bodies 45. A support 67 that supports the bottom cover 44 that is opened by movement so as to be closed is provided along the circular movement locus. The support 67 is retracted or excluded from the lower region of the bottom cover 44 so that the bottom cover 44 can be rotated downward to be opened at the upper position of the seedling planting body 4. Moreover, the attachment part 50 which attaches the bottom cover 44 so that rotation below is possible is comprised so that it may become the upper side of the circumference moving direction D of the seedling container 45 ....

  Further, when the two seedling container bodies 45 and 45 that store seedlings are positioned above the upper entrances of the seedling guide passages 35r and 35r of the seedling guide body 35, the support 67 has two parts. The bottom covers 44, 44 of the seedling containers 45, 45 are provided so as to be opened. For this reason, the bottom lid 44 is provided with a protrusion 44a that protrudes outward with respect to the orbital movement trajectory of the seedling container 45, and the bottom cover 44 is provided with a protrusion 44b that protrudes inward, and the outer protrusion 44a is provided. The provided bottom lids 44 and the bottom lids 44 provided with the inner protrusions 44b are alternately provided for the seedling containers 45 connected to each other. Then, the seedling container 45 that has been moved above the seedling guiding body 35 by the circular movement of the seedling container 45... Passes above the right side of the upper entrance of the seedling guiding passages 35r, 35r of the seedling guiding body 35. In some cases, the support 67 that is displaced inwardly is positioned below the projecting portion 44b that protrudes inwardly of the bottom cover 44 of the seedling container 45 so that the bottom cover 44 is not opened. Then, when the seedling container 45 moves to the upper left side of the upper entrance of the seedling guide passages 35r and 35r of the seedling guide body 35, the support body 67 disappears and the bottom lid 44 is opened. On the other hand, when the seedling container 45, which is later moved above the seedling guide body 35 due to the circular movement of the seedling container bodies 45, passes over the right side of the upper entrance of the seedling guide passages 35r, 35r of the seedling guide body 35, Since the protruding portion of the bottom cover 44 of the seedling container 45 does not protrude inwardly, the bottom cover 44 is not supported by the support body 67 that is displaced inwardly, and the bottom cover 44 of the seedling container 45 is not supported. Open here. The opened bottom lids 44 are closed so that the support 67 appears again below the seedling container 45 after passing over the seedling planting body 4. Therefore, two seedlings can be dropped and supplied to the seedling planting body 4 simultaneously and accurately, and seedling transplanting work can be performed satisfactorily. The bottom lid 44 is provided with a biasing body constituted by a spring or the like that biases in the opening direction so that the bottom lid 44 is opened as soon as the support state by the support 67 disappears.

  Further, as described above, the seedling supply device 42 that supplies two seedlings to the seedling planting body 4 is configured to circulate two seedling containers 45... While the planting raising and lowering operation of the seedling planting body 4 is performed in one cycle. When the seedling planting body 4 moves and the seedling planting body 4 is positioned at a set position on the upper side of the raising / lowering locus, the two seedling container bodies 45, 45 each housing the seedling are both upper entrances of the seedling guiding passages 35r, 35r of the seedling guiding body 35 By setting the rotation speed of the seedling container 45 and the position of the seedling container 45 with respect to the raising and lowering movement of the seedling planting body 4, the seedling planting body 4 is positioned on the upper side of the lifting trajectory. Without providing a separate operating mechanism for releasing and releasing the support state of the bottom cover 44 of the seedling container 45 when it is raised to the set point, seedlings can be supplied at an appropriate timing, while maintaining quality. The cost could be reduced. Further, as described above, the bottom lid 44 is provided with the urging body composed of a spring or the like that urges in the opening direction so that the bottom lid 44 is released as soon as the support state by the support body 67 disappears. The setting range of the rotation speed of the seedling containers 45 as described above and the position of the seedling containers 45 with respect to the raising and lowering of the seedling planting body 4 is widened, and the seedlings are supplied at an appropriate timing. The setting work can be performed accurately and easily.

  The seedling transplanter of this example is provided with a beak-like seedling planting body 4 that moves up and down and opens and closes in a self-propelled body, and the seedling planting body 4 is moved up and down while the body is moving forward, A seedling is received from above on the inside of the seedling planting body 4 that is closed on the upper side of the lifting locus, and the seedling planted that is opened on the lower side of the raising and lowering locus of the seedling planting body 4 so as to open downward is received. In the seedling transplanter configured to release the outside and plant the seedling in the field, the vertical length of the raising / lowering locus of the seedling planting body 4 is formed shorter than the vertical length of the seedling container inside the seedling planting body 4 and After planting seedlings on the lower side of the trajectory and then closing on the upper side of the lifting trajectory, the seedling planting body 4 and the seedling planting body 4 move up and down between the seedlings planted immediately before An action body 90 that acts so as to scoop out the seedling planting body 4 is provided. We are trying to be. Furthermore, the seedling planting body 4 is configured to open and close in the left-right direction so that the seedling planting body 4 can be opened downward. In addition, the trajectory during the traveling including the forward movement by the forward movement of the seedling planting body 4 at the lower end of the seedling planting body 4 bulges from the lowering start point to the lowering end point located on the rear side of the body. The ascending trajectory of the seedling planting body 4 with respect to the aircraft and work traveling so that it rises through the trajectory swollen toward the rear of the aircraft from the ascending start point to the ascending end point located on the front side of the aircraft. The aircraft forward speed is set.

  Therefore, the seedling transplanter configured as described above moves the beak-like seedling planting body 4 up and down and opens and closes while moving the body forward. The seedling planting body 4 accepts seedlings from above on the inside of the seedling planting body 4 which is closed on the upper side of the raising / lowering locus of the seedling planting body 4 and opens the seedling planting body on the lower side of the raising / lowering locus of the seedling planting body 4 so as to open downward. Release the accepted seedlings outward and plant the seedlings in the field. The seedling planting body 4 moves up and down with a vertical length shorter than the vertical length of the inner seedling container, but the action body 90 closes on the upper side of the lifting locus after the seedling is planted on the lower side of the lifting locus. The seedling planting body 4 and the seedling planting body 4 are moved up and down between the seedlings planted immediately before and act so as to scoop out the upper part of the planted seedlings from the seedling planting body 4. Therefore, this seedling transplanting machine can improve the work efficiency by reducing the size of the body and speeding up the planting operation so that the vertical trajectory of the seedling planting body does not become large, and Even when long seedlings are planted like this, when the seedling planting body rises and the next seedling planting operation starts, the upper part of the seedling planted by the previous planting operation is surely It comes out and the planting posture of the seedling is improved. Further, since the seedling planting body 4 is configured to open and close in the left-right direction so that the seedling planting body 4 can be opened downward, the upper part of the seedling planted by the previous planting operation is pulled out of the seedling planting body. Is performed more smoothly, and the planting posture of the seedling is further improved. In addition, the trajectory during the traveling including the forward movement by the forward movement of the seedling planting body 4 at the lower end of the seedling planting body 4 bulges from the lowering start point to the lowering end point located on the rear side of the body. The ascending trajectory of the seedling planting body 4 with respect to the aircraft and work traveling so that it rises through the trajectory swollen toward the rear of the aircraft from the ascending start point to the ascending end point located on the front side of the aircraft. Since the aircraft advance speed at the time is set, the seedling planted planted by releasing the seedling at the lower end of the lifting locus will rise to a place far away from the planted seedling, so Thus, even when planting plants that are long in the vertical direction and with a narrow space between the plants, the upper part of the seedling planted by the previous planting operation is more smoothly removed from the seedling planting body, planting Attitude is better.

  In the seedling transplanter of this example, the action body 90 is specifically configured as shown in FIGS. That is, the working body 90 includes a seedling planting body 4 and a seedling planted immediately before the seedling planting body 4 after planting seedlings on the lower side of the elevation trajectories ST1 and ST2 until closing on the upper side of the elevation trajectories ST1 and ST2. It is composed of a rod-like member that moves up and down between N and N. The action body 90 is provided so as to move upward from the upper and lower trajectories ST1, ST2 of the seedling planting body 4. Therefore, the action body 90 is moved up and moved immediately before the seedling planting body 4 closes and moves near the upper and lower trajectories ST1 and ST2 of the seedling planting body 4, and the upper end portion of the planted seedling is scraped from the seedling planting body 4. The position of the seedling contacted by the action body 90 can be as close as possible to the upper end portion side of the seedling, whereby the posture of the already-planted seedling N by the action body 90 contacting the seedling can be adjusted. Disturbance is less likely to occur.

  The action body 90 is configured to rotate up and down along a plane substantially orthogonal to the horizontal axis in the front-rear direction, and the seedling planting body 4 plantes seedlings on the lower side of the lifting trajectories ST1 and ST2 and exceeds a set height. Until it rises, it turns downward and the rod-like action body 90 stands up and down, and when the seedling planting body 4 rises above a set height, it turns upward, and on the rear side of the seedling planting body 4 The seedling planting body 4 is configured to move so that the front side of the seedlings N, N planted immediately before is moved upward so that the rod-shaped action body 90 is in a posture lying on the left and right. Thereby, the operation mechanism of the action body 90 could be simply configured.

  Furthermore, an urging body 91 such as a spring that urges the rod-like action body 90 in a direction to rotate upward is provided, and when the seedling planting body 4 is lowered, the lowering operation resists the urging body 91. When the seedling planting body 4 is moved upward by lowering the action body 90, the action of lowering the action body 90 against the biasing body 91 is released, and the action body 90 is raised. A mechanism for interlocking the raising and lowering operation of the seedling planting body 4 and the vertical rotation of the action body 90 is provided so as to move. As a result, the operation mechanism of the operating body 90 can be simply configured, and the operating body 90 can be operated at an appropriate timing.

  A specific configuration of the illustrated example will be described. The action body is formed of a rod-like body as shown in the figure, and a pivot shaft 92 formed on the base portion of the action body 90 is turned to a mounting portion 93 provided on the body frame 2b. The arm 94 is fixed to the rotating shaft 92, and the other end of the spring 91 as the urging member having one end attached to the body frame 2b is attached to the arm 94. The action body 90 is urged by the spring 91 in a direction to rotate upward. Further, one end of the interlocking rod 96 is rotatably attached to the arm 95 fixed to the rotating shaft 92, and the other end is fixed to the rotating shaft 98 of the operating arm 97 disposed above the rotating shaft 92. The arm 99 is rotatably attached. The operating arm 97 rotates in contact with the operating pin 100 fixed to the seedling planting body 4 when the seedling planting body 4 moves up and down. When the seedling planting body 4 is lowered below the set height, the operating pin 100 pivots down the operating arm 97, and the action body 90 rotates downward in conjunction with this. When the seedling planting body 4 is raised, the push-down rotation of the operating arm 97 by the operating pin 100 is released, and the action body 90 is rotated upward in conjunction with this.

  FIG. 19 shows the seedling planting body 4 from the time the planting seedling is planted on the lower side of the raising / lowering trajectory until the upper side of the raising / lowering trajectory is closed, after acting on the upper part of the planted seedling from the seedling planting body 4. (The seedling planting body 4 in FIG. 19 shows a configuration with a single pointed portion 4N, but is not limited to this configuration.) And the seedling planting body 4 rises between the front and rear of the seedling planted immediately before. A moving rod-shaped working body 90 and a telescopic screen 101 that is developed below the working body 90 as the working body 90 rises are provided. As a result, the upper part of the seedling planted by the action body 90 by its upward movement is scraped out from the seedling planting body 4, and the planted seedling planted by the screen 101 developed below it can be prevented from falling forward. The planting posture becomes even better. One end of the screen 101 is attached to a rod-like action body 90, the other end is attached to a support member 102 provided so as not to be rotatable, and when the action body 90 is rotated downward, it is folded like a fan. Provided.

  The technique shown in FIG. 20 is a seedling planting body 4 that moves up and down and opens and closes (the seedling planting body 4 in FIG. 20 shows a configuration having one sharpened portion 4N, but is not limited to this configuration). Providing a sealing regulating body 103 that enters the gap between the pair of seedling planting bodies 4a, 4c that is opened while the pair of seedling planting bodies 4a, 4c opened at the lower end of the lifting locus ST is provided, Even if the seedling planting bodies 4a and 4c are closed, a gap is generated so that the seedlings 4a and 4c are closed when the seedling planting bodies 4a and 4c are closed. Even if it remains in the tree, it can be prevented from being caught, and the planting posture of the seedling can be prevented from being disturbed. According to this structure, it can carry out easily rather than setting the clearance gap at the time of seedling planting body closing by replacement | exchange of the cam with which the opening-and-closing mechanism of seedling planting bodies 4a and 4c is equipped, and can also change the magnitude | size of a clearance gap easily. Furthermore, by providing an elastic member on the outer periphery of the sealing regulating body 103, noise when the seedling planting body is closed can be reduced. Further, when the sealing restriction body 103 enters the gap between the pair of seedling planting bodies 4a and 4c in the middle of ascending, the sealing of the seedling planting bodies 4a and 4c is regulated, and the seedling planting bodies 4a and 4c reach the uppermost end of the lifting locus. When it rises, the sealing restriction body 103 moves to the notch 104 formed at the joint edge of the pair of seedling planting bodies 4a and 4c, so that the sealing regulation of the seedling planting bodies 4a and 4c by the sealing regulation body 103 is released. It can also be configured. Accordingly, the sealing operation is performed at the uppermost end portion of the raising / lowering trajectory while performing the sealing restriction, and even when a thin seedling is planted, the seedling can be planted without falling off the seedling planting body. In the illustrated example, specifically, the sealing restricting body 103 is formed of a rod-like body fixed to the machine body with the tip directed rearward, and the tip portion protruding toward the rear of the sealing restricting body 103 is located on the upper side of the lifting locus. A pair of seedling planting bodies 4a, 4c that are arranged so as to be positioned in front of the seedling planting body that has been lifted and opened at the lower end of the lifting locus ST, and the sealing regulating body 103 is opened in the middle It is provided so as to enter the gap between the seedling planting bodies 4a and 4c.

  A seedling planting body 4 shown in FIG. 21 is a seedling planting body that has two sharp beak-shaped sharpened points 4N and 4N, and enables two-row staggered planting. This seedling planting body 4 includes a beak-shaped sharpened portion 4N for planting the left-hand strip and a beak-shaped sharpened portion 4N for planting the right-hand strip, and the lower portions of the left-handed sharpened portion 4N and the right-hand sharpened portion 4N are bifurcated. The left sharp part 4N and the upper part of the right sharp part 4N are formed in a state of being joined to each other. The left and right sharpened portions 4N and right sharpened portion 4N, which are divided into left and right sides, are set so that the lower end portions of the left sharpened portion 4N and the right sharpened portion 4N are set to have a horizontal spacing that matches the horizontal spacing of the right and left striped plants. The front-rear interval is set to match the width of the planted seedling in the front-rear direction. And the seedling planting body 4 for Nijo zigzag planting formed as described above is configured to open and close in the left-right direction. Specifically, the left sharpened part 4N of the seedling planted body 4 is composed of a left outer seedling planted body 4a and a central left seedling planted body 4b1, and the right sharpened part 4N of the seedling planted body 4 is a central right seedling planted body. 4b2 and the right outer seedling planting body 4c, and the upper part of the center left seedling planting body 4b1 is connected to the upper part of the right outer seedling planting body 4c so as to integrally open and close both, The upper part of the right seedling planting body 4b2 is connected to the upper part of the left outer seedling planting body 4a so that both can be integrally opened and closed. As a result, when the left and right outer seedling planting bodies 4a and 4c are opened to the left and right, the center left and right seedling planting bodies 4b1 and 4b2 are also opened to the left and right center side. 4 can be set to a large opening amount, so that the seedling can be released well and the seedling can be planted accurately.

  The pressure-reducing device shown in FIG. 22 has left and right pressure-reducing plates 104 and 104 having plate surfaces in contact with the ridges in the vicinity of the left and right sides of the planting location, and the planting location in a state where the plate surface is substantially perpendicular to the horizontal axis. And 104, 104; 105, 105 are respectively attached to left and right support frames 37, 37, whose front portions are attached to the machine body so as to be pivotable up and down. The left and right support frames 37, 37 have a connecting portion 38 for connecting the rear portions thereof. The connecting portion 38 is supported by the rear portion of the machine and is pushed downward by a spring, a weight 41, etc. Applying pressure. As a result, the suppression plates 104, 104 can be accurately suppressed to the root of the planted seedling, and the guide plates 105, 105 prevent the seedling from falling to the left and right, and the planting posture becomes appropriate.

  FIG. 23 shows a raised body 106, 106 in which the hair tips at the lower ends of the left and right support frames 37, 37 attached to the machine body so that the front part can be pivoted up and down are in contact with the ridges near the left and right sides of the planting site. Are each mounted. Thereby, the surface soil surface near the root part of the planted seedling becomes flat, and rainwater accumulates in the depression near the root formed at the time of planting, so that the growth failure of the seedling can be avoided.

  The technology shown in FIG. 24 is to form the seedling container 45 ′ of the seedling supply device 42 by inclining the lower opening thereof so that the mouth faces the seedling container movement direction D side, This is a configuration in which the outer peripheral portion of the seedling container 45 ′ is closed by a cover body 44 ′ that is provided so as to be able to open and rotate downward on an attachment portion 50 ′ provided on the seedling container movement direction D side. As a result, when the seedling N is dropped and supplied by rotating the lid 44 ′ downward and rotating above the seedling planting body 4, the lower end portion of the seedling falls from a predetermined location, and the seedling container 45. '... the lower opening is inclined so that the mouth is directed to the seedling container movement direction D side, and the attachment part 50' of the lid 44 'is provided on the seedling container movement direction D side. The section which opens the body 44 'and allows the fall supply of the seedling N is widened, so that the seedling can be supplied more appropriately.

  The technique shown in FIG. 25 is a cutting device 106 that cuts the roots of a green onion seedling, a disc-shaped cutter 107 that cuts the roots of the green onion seedling, and a guide body 108 that guides the roots of the green onion seedling to the cutter 107. Is provided. The guide body 108 is provided with a groove part 109 for placing and guiding the root of the green onion toward the cutter 107, and a slit 110 at the bottom part of the groove part 109 for allowing only the root of the green onion seedling to protrude downward. The root of the green onion can be accurately cut by moving the seedling through the slit 110 and moving the seedling to the cutter 107. When such a cutting device 106 is installed at an appropriate location of the seedling transplanting machine, a root that is too long can be appropriately cut and transplanted. In the figure, reference numeral 111 denotes an electric motor that drives the cutter 107.

The side view of a seedling transplanter. The top view of a seedling transplanter. Explanatory drawing which shows the transmission structure of a seedling transplanter. The perspective view which shows the connection structure of a seedling container. The top view which shows a part of seedling supply apparatus. The cross-sectional side view which shows a part of seedling supply apparatus. The front view which shows the seedling supply part from a seedling supply apparatus to a seedling planting body. The top view which shows the seedling supply part from a seedling supply apparatus to a seedling planting body. The side view which shows the operation mechanism and raising / lowering locus | trajectory of a seedling planting body. The side view of a seedling planting body. The rear view of a seedling planting body. The cross-sectional top view of a seedling planting body. The cross-sectional back view which shows a partial structure of a seedling planting body. The rear view which shows the planting state of a seedling planting body. The side view which shows the raising / lowering locus | trajectory of a seedling planting body. The side view which shows the structure of an action body. The rear view which shows the structure of an action body. The side view which shows operation | movement of an action body. The perspective view which shows the effect | action body of another structure. The perspective view which shows the structure of a sealing control body. The rear view of the seedling planting body for Nijo zigzag planting of another composition. It is drawing which shows an example of a pressure suppression apparatus, (a) is a side view, (b) is a rear view. It is drawing which shows a leveling device, (a) is a side view, (b) is a rear view. The cross-sectional front view which shows one structure of a seedling supply apparatus. The perspective view which shows a cutting device.

Explanation of symbols

1: Traveling device 4: Seedling planting body 90: Action body

Claims (3)

The beak-like seedling planting body 4 that moves up and down and opens and closes is provided in a self-propelled machine body, the seedling planting body 4 is moved up and down while the machine body is moving forward, and the seedling planting body 4 is closed on the upper side of the lifting locus. The seedling is received from above inside the seedling planting body 4, and the seedling planting body 4 is opened on the lower side of the raising and lowering locus of the seedling planting body 4 so that the seedling planting body 4 is opened downward, and the seedling received inside is discharged to the outside to produce the seedling. In the seedling transplanting machine configured to be planted, the vertical length of the raising / lowering trajectory of the seedling planting body 4 is formed shorter than the vertical length of the seedling container inside the seedling planting body 4, and seedlings are planted on the lower side of the raising / lowering trajectory The upper portion of the seedling planted by moving up and down between the seedling planted body 4 and the seedling planted by the seedling planted body 4 immediately before the closing on the upper side of the raising and lowering locus is scraped out from the seedling planted body 4 A seedling characterized by providing an action body 90 that acts like this Planting machine. The seedling transplanting machine according to claim 1, wherein the seedling transplanting body 4 is configured to open and close in the left-right direction so that the seedling planting body 4 can be opened downward. The lifting trajectory during work including forward movement due to forward movement of the seedling planting body 4 at the lower end of the seedling planted body 4 passes through a trajectory that bulges from the descent start point to the descent end point located on the rear side of the aircraft. The ascending trajectory of the seedling planting body 4 with respect to the aircraft and the ascending trajectory of the seedling planting body 4 so as to rise through the trajectory swollen from the ascent start point to the ascending end point located on the front side of the aircraft. The seedling transplanting machine according to claim 1, wherein an aircraft forward speed is set.

Images