JP2009095274A - Multiple-row seedling planter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multiple-row seedling planter having such a construction as to feed seedlings to left and right seedling planting elements by a common seedling feeder equipped with a seedling container moving around along a single loop path, and enabling seedlings to be fed properly to the seedling planting elements and enabling planting row spaces to be varied easily while maintaining its construction simplification and seedling replenishing facilitation to the seedling feeder. <P>SOLUTION: The multiple-row seedling planter has the following mechanism: Seedling feeding cups 25 are arranged in a loop form on a seedling feeder 24 and seedlings are dropped and fed from the respective cups 25 to seedling planting elements 5 successively, and, along the round-moving path of the cups 25, the mutual space between the pair of left and right seedling planting elements 5 is made variable transversely by planting position-varying mechanisms 69, 70, 71, 91a and 91b, thus enabling the mutual space to be set, wherein the seedling planting elements 5 are moved transversely at such a timing that the seedling planting elements 5 are raised upward on slipping off the soil by a vertically moving mechanism 4. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention belongs to the technical field of a multi-row planting machine in which a plurality of seedling planting bodies are arranged on the left and right.

  A seedling supply device that is provided with a beak-shaped seedling planting body configured to plant a seedling in a field by moving up and down with a predetermined operation trajectory by a vertical movement mechanism, and supplying seedlings to the left and right seedling planting bodies The seedling supply device is provided with a seedling supply cup serving as a plurality of seedling containers for storing seedlings, and a plurality of seedling supply cups arranged in a loop at a predetermined arrangement pitch. The movement mechanism consisting of a sprocket that moves around so as to pass through the upper part, and the bottom cover support member that supports the bottom cover of the seedling supply cup in a closed state are lacked at the drop supply position that is the upper position of the seedling planting body. As a configuration, a seedling drop supply mechanism that opens the bottom lid when the seedling supply cup is moved to the drop supply position by a moving mechanism and supplies the seedlings stored in the seedling supply cup to the seedling planted body moved up by the vertical movement mechanism The seedling drop supply mechanism comprises A first seedling supply cup for storing seedlings to be supplied at one fall supply position and a seedling to be supplied at the other fall supply position, with right and left drop supply positions corresponding to each right seedling planting body And the second seedling supply cups for accommodating the first and second seedling supply cups alternately and along the circular movement path, the first and second seedling supply cups are moved to the respective drop supply positions by the circular movement by the moving mechanism. In the multi-row seedling planting machine configured to reach, the lower part of each seedling planting body is displaced in the left-right direction, and the seedling planting position by each seedling planting body is relative to each fall supply position There is one in which it is possible to plant seedlings between desired planting positions and thus between planting strips by slightly shifting in the left-right direction (see Patent Document 1).

In addition, each of the left and right sides each provided with a beak-like seedling planting structure configured to plant a seedling in a field by moving up and down with a predetermined operation trajectory by a vertical movement mechanism, and supplying the seedling to each of the left and right seedling planting bodies The seedling supply device includes a seedling supply cup serving as a plurality of seedling containers for storing seedlings, and a plurality of seedling supply cups arranged in a loop at a predetermined arrangement pitch, and sequentially seedling planting A moving mechanism that moves around so as to pass over the body, and a vertical movement mechanism that moves the seedling contained in the seedling container when the seedling container moves to a drop supply position that is above the seedling planted body by the moving mechanism. In a multi-row seedling planting machine equipped with a seedling dropping supply mechanism that drops and supplies to a seedling planted body that has moved up, there is one that has a planting position changing mechanism that can move one of the right and left seedling planting bodies ( Patent Document 2).
JP 2006-94832 A JP 2002-84827 A

  The thing of the said background art adjusts a seedling planting position by deviating or moving a seedling planting body, and all change the fall supply position which makes a seedling planting body fall-supply Since it is not a thing, there is a limit in the amount of adjustment of a seedling planting position, and there is a limit in change adjustment between planting lines. In addition, in the thing of the said patent document 2, although it is possible to change the fall supply position by moving the whole seedling supply apparatus with the movement of a seedling planting body, in this case, the whole seedling supply apparatus is moved. Therefore, there is a problem that it is difficult to change between planting rules.

  In addition, even if the fall supply position is simply moved in accordance with the movement of the seedling planting body, the timing of the seedling planting drop supply from the seedling container is different due to the movement of the fall supply position. The seedling cannot be dropped and supplied to the seedling planting body at the timing when it is moved up by the mechanism, and there is a risk that the seedling planting accuracy will be lowered due to inappropriate supply of the seedling to the seedling planting body.

  Therefore, the present invention provides a simplified configuration and a seedling supply device as a configuration for supplying seedlings to the right and left seedling planting bodies with a common seedling supply device including a seedling container that orbits around a single loop path. It is an object of the present invention to make it possible to appropriately supply seedlings to a seedling planting body and easily change between planting strips while maintaining ease of replenishing seedlings.

In order to solve the above problems, the present invention has taken the following technical means.
In other words, the invention according to claim 1 is provided with a seedling planting body (5) configured to plant a seedling in a field by moving up and down along a predetermined operating locus by a vertical movement mechanism (4), A seedling supply device (24) for supplying seedlings to the seedling planting body (5) is provided, and the seedling supply device (24) includes a plurality of seedling containers (25) for storing seedlings and the plurality of seedling containers. (25) is arranged in a loop with a predetermined arrangement pitch, and a moving mechanism (26) that sequentially moves around the seedling planting bodies (5) so that the seedling is accommodated by the moving mechanism (26). When the body (25) moves to the drop supply position (39, 40), which is the upper position of the seedling planting body (5), the seedling that the seedling housing body (25) houses is moved up by the vertical movement mechanism (4) A seedling drop supply mechanism (27) for dropping and supplying the planted body (5), the seedling fall supply mechanism (27) A first seedling container (1) that includes left and right drop supply positions (39, 40) corresponding to each seedling planting body (5) and that stores seedlings to be supplied at one drop supply position (39). 25b) and a second seedling container (25c) for storing seedlings to be dropped and supplied at the other fall supply position (40) are provided separately, and the first and second seedling containers (25b, 25c) are provided. In the multi-row planting seedling transplanter configured to reach each drop supply position (39, 40) the same number of times by the circular movement by the moving mechanism (26), along the circular movement path of the seedling container (25) The seedling planting body (5) is moved so that the distance between the left and right seedling planting bodies (5) changes by an integral multiple of the arrangement pitch of the first and second seedling container (25b, 25c). Possible planting position change mechanism (69, 70, 71, 91a, 91b) The seedling drop supply mechanism (27) adjusts the left and right drop supply positions (39, 40) according to the amount of movement of the seedling planting body (5) by the planting position changing mechanism (69, 70, 71, 91a, 91b). The drop supply position (39, 40) can be changed so that the distance between them changes, and the seedling planting body (5) is moved left and right by the planting position changing mechanism (69, 70, 71, 91a, 91b). A plurality of strips having a configuration in which the spacing can be set, and the vertical planting mechanism (4) moves the seedling planting body (5) to the left and right at the timing when the seedling planting body (5) rises out of the soil. It is a seedling planting machine.

  Since the multi-row planting planter according to claim 1 can set the interval by moving the seedling planting body (5) to the left and right, the interval between planting zones can be changed freely, and the seedling Since the planted body (5) moves left and right at the timing when the seedling planted body (5) rises out of the soil, the planted body (5) can be set between arbitrary strips while maintaining work efficiency.

A seedling transplanter 1 according to an embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a side view of a seedling planting machine according to an embodiment of the present invention, FIG. 2 is a plan view of the seedling planting machine in which a rear pressure ring of the seedling planting machine of FIG. 1 is omitted, and FIG. 1 is a plan view showing the support of the seedling planting machine in FIG. 1 (FIG. 3 (a) is between narrow planting strips, FIG. 3 (b) is between wide planting strips), FIG. FIG. 5 is a view showing the winding sprocket and its periphery of the seedling transplanter of FIG. 1 ((FIG. 4A is a plan view, FIG. 4B is a perspective view), and FIG. 5 is a seedling planting of FIG. It is a perspective view which shows the apparatus 23. In addition, in the following description, the body side which has arrange | positioned the steering handle 2 is made into back, and the other side, ie, the body side which has arrange | positioned the engine 3, is made into the front. The right hand side of an operator standing toward the front side of the machine is the right side, and the left hand side is the left side.

  The seedling planting machine 1 includes a beak-shaped seedling planting body 5 that can be opened and closed by connecting to a vertical movement mechanism 4 that is driven to move up and down to a machine body that includes a traveling device and a steering handle 2. Is provided with a pair of left and right front wheels 6 supported so as to be able to roll and a pair of left and right rear wheels 7 which are driven and rotated by transmission of the power of the engine 3. The front wheel 6 and the rear wheel 7 are guided in the gutter groove, and the aircraft can travel above the gutter.

  A mission case 8 is disposed at the rear of the engine 3, and the output shaft of the engine 3 enters the mission case 8, and engine power is transmitted from the output shaft of the engine 3 to the transmission mechanism in the mission case 8. It has a configuration. A chain transmission case 9 is attached to both left and right sides of the transmission case 8 so as to be rotatable about a rotation fulcrum 9a, and is extended from the transmission case 8 to the left and right outer sides on the rotation fulcrum 9a of the chain transmission case 9. The tip of the wheel drive shaft enters and transmits driving power to the transmission mechanism in the chain transmission case 9. The traveling power is transmitted to the axle 10 that extends to the rear side of the machine body and protrudes to the rear end side via the transmission mechanism in the chain transmission case 9, and the rear wheel 7 is driven to rotate. .

  A horizontal horizontal hydraulic rolling cylinder 11 that can be expanded and contracted is provided on the left side of the fuselage, and a balance rod 12 is attached to the tip of the piston rod of the horizontal horizontal rolling cylinder 11 so as to be rotatable about a vertical axis. Yes. Further, the right side of the connecting portion of the balance rod 12 is connected to the rod 13.

  Based on the detection result of the saddle height detection sensor in which the lifting hydraulic cylinder 14 provided at the center of the body is composed of a front pressure reducing wheel 15 described later, when the piston rod 14a protrudes rearward, the rod 13 and the left and right The horizontal control rolling cylinder 11 also moves rearward, and the arms 16 connected to the rod 13 and the rolling cylinder 11 rotate rearward in a side view of the machine body, and accordingly the left and right chain transmission cases 9 rotate. The left and right rear wheels 7 are moved downward about the fulcrum 9a, and the airframe is raised. On the contrary, when the piston rod 14a of the lifting hydraulic cylinder 14 is retracted forward, the left and right arms 16 are rotated forward, and accordingly, the chain transmission case 9 is rotated upward around the rotation fulcrum 9a. As a result, the left and right rear wheels 7 are raised and the aircraft is lowered.

  Further, when the left and right horizontal control rolling cylinder 11 is extended and contracted, only the left chain transmission case 9 is moved up and down, and only the left rear wheel 7 is moved up and down to tilt the machine body to the left and right. The left / right horizontal control rolling cylinder 11 is configured to operate so that the airframe is horizontally horizontal based on a detection result of a sensor (not shown) that detects right / left inclination of the airframe relative to the left / right horizontal.

  The pair of front wheels 6 is rotatably attached to an axle 19 fixed to the side of the lower end of an arm portion 18 that extends downward from the left and right sides of the front wheel support frame 17 that extends from the left and right center position below the engine 3 to the left and right. .

  The steering handle 2 is attached to the rear end portion of the body frame 20 whose front end portion is fixed to the mission case 8. The body frame 20 is disposed at the center of the left and right sides of the body 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 20 to the left and right, and the rear end portions thereof serve as grip portions 2 a and 2 a 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 2a.

  The vertical movement mechanism 4 for operating the seedling planting body 5 is mounted on a planting transmission case 22 having a transmission mechanism for transmitting the power for driving the seedling planting body 5 from the transmission case 8 via the transmission shaft 21. ing. In the planting transmission case 22, a transmission mechanism for transmitting power for driving the seedling planting body vertical movement mechanism 4 to move up and down is provided.

  The transmission mechanism in the planting transmission case 22 includes an intermittent drive mechanism that stops the vertical movement mechanism 4 and the pair of left and right seedling planting bodies 5 at the highest position of the vertical movement or in the vicinity thereof for a set time. And a vertical movement mechanism 4 and a clutch mechanism for stopping the vertical movement of the seedling planting body 5. The time for stopping by the intermittent drive mechanism is adjusted by a speed change mechanism provided in the intermittent drive mechanism, and the adjustment between the seedling planting stocks by the seedling planting body 5 is adjusted by this adjustment.

  Moreover, the seedling supply device 24 that supplies seedlings to the seedling planting device 23 including the seedling planting body 5 receives seedlings from above and accommodates seedlings inside thereof (32 seedlings in total). The bottom of the seedling supply cup 25 is opened at the upper position of the supply cup 25, the moving mechanism 26 that moves the seedling supply cup 25 so as to pass over the seedling planting body 5, and the position above the seedling planting body 5. A seedling drop supply mechanism 27 that drops seedlings accommodated inside and supplies seedlings to the seedling planting body 5 is provided.

  The seedling supply cup 25 has a cylindrical body that opens up and down and a bottom lid 25a that opens and closes an opening on the lower side of the cylindrical body, and is connected to each other in a loop shape. The moving mechanism 26 is configured to rotate around an oval loop trajectory that is long to the left and right as viewed from above. The seedling drop supply mechanism 27 is configured to open the bottom lid 25 a of the seedling supply cup 25 at a position above the seedling planting body 5. The seedling supply device 24 is configured to supply the seedlings by moving the seedling supply cup 25 around the two seedling planting bodies 5 in one round.

  A cylindrical outer peripheral portion is formed on the outer periphery of the seedling supply cup 25, and an engagement portion (round hole) that engages with the cylindrical outer periphery in a freely rotatable manner is provided to connect the two seedling supply cups 25. A plurality of bodies 28 are provided, the engaging part of the connecting body 28 is rotatably engaged with the outer peripheral part of the cylinder of the seedling supply cup 25, and the adjacent seedling supply cup 25 is rotatable about the outer peripheral part of the cylinder as a rotation axis. A plurality of seedling supply cups 25 are connected to each other. In other words, the seedling supply cup 25 and the connecting body 28 are connected like an endless chain. Thereby, since the space | interval with the seedling supply cup 25 which adjoined the seedling supply cup 25 does not change in the part which moves linearly, or the part which moves circularly, a seedling is transferred from the seedling supply cup 25 to the seedling transplant body 5. The seedling supply cup 25 is less likely to be displaced with respect to the seedling planting body 5 at the location where the seedling is supplied, so that the seedling can be supplied properly and the seedling can be transplanted accurately.

  The moving mechanism 26 wraps the seedling supply cups 25 that are connected to each other like an endless chain by engaging them with arcuate cutouts on the outer periphery of the winding sprocket 29 provided on the left and right sides. Is driven and rotated by the power extracted from the planting transmission case 22 so that the seedling supply cup 25 rotates counterclockwise in plan view of the machine body.

  Each rotary shaft 30 to which the winding sprocket 29 is rotatably attached is attached to a support frame 31 that extends from the planting transmission case 22 to the left and right, and is output upward from the planting transmission case 22. As shown in FIG. 4, the drive shaft 32 is transmitted through the drive sprocket 33, the chain 34, and the driven sprocket 35 to the rotating shaft 30 that rotates integrally with the driven sprocket 35.

  The driven sprocket 35 and the winding sprocket 29 are coupled by a bolt 36 so that both rotate integrally. Therefore, the circumferential movement path of the seedling supply cup 25 includes left and right semicircular arc-shaped portions 37 and front and rear linear portions 38 connected to the arc-shaped portion 37. The seedling supply cup 25 moves to the right in the rear straight portion 38 so as to pass above the left and right seedling transplant bodies 25, and seedlings are planted in the straight portions 38. Left and right drop supply positions 39 and 40 for supplying the drop to 5 are set. The left and right pivot shafts 30 around which the seedling supply cup 25 circulates are arranged on the inner side of the left and right rear wheels 7 and on the rear side of the axle 10 position of the rear wheels 7. Further, the seedling planting body 5 is arranged on the rear side of the axle 10 position of the rear wheel 7.

  As shown in FIG. 4, the bolt 36 is screwed into the screw hole of the driven sprocket 35 from below through an arc-shaped long hole 29a provided in the winding sprocket 29 that is long in the rotational direction. Therefore, by loosening the bolt 36, the rotational phase of the driven sprocket 35 and the winding sprocket 29 can be changed and adjusted within the range of the arc-shaped elongated hole 29a. Since there is only one bolt 36, the rotational phase between the driven sprocket 35 and the winding sprocket 29 can be easily changed.

  The adjustment range by the arc-shaped elongated hole 29a is the pitch of the seedling supply cup 25 in the winding sprocket 29 (one half of the pitch of the first and second seedling supply cups 25b and 25c described later). Is set. With this arc-shaped long hole 29a, bolt 36, etc., the seedlings that fall and supply to the seedling planting body 5 when the left and right seedling planting bodies 5 are moved upward in accordance with the change of the left and right fall supply positions 39, 40. This is a turning timing changing mechanism that changes the turning position of the seedling supply cup 25 with respect to the operation of the vertical movement mechanism 4 so that the seedling supply cup 25 that stores the seedlings reaches the drop supply positions 39 and 40.

  As shown in FIG. 3, a plurality (32 in total) of seedling supply cups 25 includes a first seedling supply cup 25 b that accommodates seedlings to be supplied and dropped at one (left side) drop supply position 39, and the other ( On the right side, a total of 16 second seedling supply cups 25c that contain seedlings to be supplied at a fall supply position 40 are provided, and a first seedling supply cup 25b and a second seedling supply cup 25c are provided. It becomes the structure connected alternately. And when the 1st seedling supply cup 25b is located in one fall supply position 39 as shown in Drawing 3 (a), it sets so that the 2nd seedling supply cup 25c may be located in the other fall supply position 40 is doing.

  Accordingly, the first and second seedling supply cups 25b and 25c are moved by the moving mechanism 26 around the looped path with the same amount of movement. The configuration reaches 39 and 40 at the same timing and the same number of times.

  The bottom cover 25a of the first seedling supply cup 25b that accommodates the seedling that is supplied to the left seedling planting body 5 is provided with a protrusion 41 on the right end (the outer end of the circulation) with respect to the rotation direction. Yes. On the other hand, the bottom lid 25a of the second seedling supply cup 25c that accommodates the seedling that is supplied to the right seedling planting body 5 is provided with a protrusion 41 at the left end (inner end of the circulation) with respect to the circulation direction. Yes.

  The seedling drop supply mechanism 27 is provided with a support 42 that supports the bottom cover 25a from below so that the bottom cover 25a does not rotate downward below the orbit of the seedling supply cup 25, and this support 42 is supported by the seedling. When the seedling supply cup 25 passes through the upper position of the seedling planting body 5 (the drop supply positions 39 and 40), the bottom cover 25a is supported by the support body. The support state by 42 is released, and the lower part of the seedling supply cup 25 is opened so as to rotate downward due to its own weight and the gravity of the seedling and to drop the seedling downward. In addition, the rotation fulcrum of the bottom cover 25a is provided in the lower rotation side part of the seedling supply cup 25, and the bottom cover 25a is configured to open from the upper rotation side of the seedling supply cup 25.

  The support body 42 includes fixed support bodies 42a, 42b, 42c, and 42d fixed to the airframe, and movable support bodies 42e and 42f that can change positions relative to the airframe. The fixed support bodies 42a, 42b, 42c, and 42d are a main fixed support body 42a that covers the entire area of the left and right arc-shaped portions 37 and the front linear portion 38 in the circulation locus of the seedling supply cup 25, and a rear linear portion. 38, first, second and third sub-fixing supports 42b, 42c and 42d are provided. The main fixed support 42a and the first, second, and third sub fixed supports 42b, 42c, and 42d are made of bar material.

  The main fixed support 42a is extended along the circular trajectory of the seedling supply cup 25 so as to contact the center of the bottom cover 25a, and opens the bottom lid 25a of the first and second seedling supply cups 25b and 25c. Support not to be. The first sub-fixing support 42b is provided in a straight line along the circulation locus of the seedling supply cup 25 so as to contact the protrusion 41 provided at the outer end of the rotation in the bottom lid 25a of the first seedling supply cup 25b. The bottom cover 25a of the first seedling supply cup 25b is supported so as not to open. The first sub-fixing support body 42b supports the bottom cover 25a of the first seedling supply cup 25b by closing the bottom cover 25a from the middle of the linear portion 38 on the back of the seedling supply cup 25. In order to take over the support of 25a to the succeeding main fixing support 42a, it is provided on the right side of the linear portion 38 on the rear side and on the upper side of the bottom lid 25a of the main fixing support 42a.

  The second sub-fixing support 42c is provided in a straight line along the circumferential locus of the seedling supply cup 25 so as to contact the protrusion 41 provided on the inner end of the circumference of the bottom lid 25a of the second seedling supply cup 25c. The bottom cover 25a of the second seedling supply cup 25c is supported so as not to open. The second sub-fixing support 42c takes over the support of the bottom cover 25a of the main fixed support 42a in the circumference of the seedling supply cup 25 and supports only the bottom cover 25a of the second seedling supply cup 25c. It is provided on the lower left side of the bottom lid 25a of the main fixed support 42a at a position on the left side of the linear portion 38 on the rear side.

  The third sub-fixing support 42d is configured to contact the center of the bottom cover 25a, and the bottom cover 25a of the first seedling supply cup 25b from the middle of the linear portion 38 on the rear side in the circumference of the seedling supply cup 25. Is provided with a lower inclined portion toward the upper side of the circuit, and is closed while guiding the bottom lid 25a of the first seedling supply cup 25b opened at the inclined portion to the upper side. It is provided at a substantially central position of the portion 38 and in parallel with the start end portion (left end portion) of the first sub fixed support 42b around the bottom lid 25a.

  The end (right end) of the third sub-fixing support 42d around the bottom lid 25a is located on the upper side (left side) of the second sub-fixing support 42c around the bottom lid 25a from the end (right end) of the bottom lid 25a. ). The starting end of the main fixed support 42a around the bottom lid 25a is provided with an inclined portion that is lower on the upper side of the circumference so as to close the bottom lid 25a of the second seedling supply cup 25c, and is opened at the inclined portion. The bottom lid 25a of the second seedling supply cup 25c is closed while being guided upward.

  Further, the first sub-fixing support 42 b is provided by fixing the right end to the first support member 43 extending from the support frame 31 to the right end of the linear portion 38 on the rear side. Further, the second sub-fixing support 42c is fixed to the second support member 44 extending from the support frame 31 to the left end of the linear portion 38 on the rear side, and the right end is rearward from the planting transmission case 22. The third support member 45 extends and is fixedly provided. The third sub-fixing support 42d is fixedly provided on the third support member 45. The main fixed support 42 a is fixedly provided on the upper surfaces of the first support member 43 and the second support member 44.

  The movable supports 42e and 42f are respectively provided on a part of the linear portion 38 on the rear side. The first moving support 42e and the second moving support 42f are made of a plate material. The first moving support 42e is provided in a straight line along the orbit of the seedling supply cup 25 so as to contact the protrusion 41 provided on the outer end of the circumference of the bottom lid 25a of the first seedling supply cup 25b. The first seedling supply cup 25b is configured to support the bottom cover 25a of the first seedling supply cup 25b so as not to open, and the first seedling supply cup is taken over by supporting the bottom cover 25a of the main fixed support 42a around the seedling supply cup 25. In order to support only the bottom cover 25a of 25b, it is provided on the left side of the linear portion 38 on the rear side and on the lower side of the bottom cover 25a of the main fixed support 42a.

  The first moving support body 42e is fixedly supported to the second support member 44 by a mounting bolt 47 penetrating a long hole 46 provided in the second support member 44 in the left-right direction. It is configured to change the mounting position in the direction. The mounting bolt 47 is located on the outer side (rear side) of the surrounding area of the seedling supply cup 25, and can be easily tightened or loosened from the rear side without the seedling supply cup 25 getting in the way.

  The second moving support body 42f includes a linear portion along the circulation locus of the seedling supply cup 25 so as to abut on the protrusion 41 provided on the inner end of the rotation of the bottom lid 25a of the second seedling supply cup 25c, The second seedling supply cup 25c is configured to support the bottom cover 25a so as not to open. In the circumference of the seedling supply cup 25, the second seedling supply cup 25c takes over the support of the bottom cover 25a of the second auxiliary fixed support 42c. At the position on the right side of the linear portion 38 on the rear side so as to support the bottom lid 25a of the supply cup 25c and the end of the main lid 42a on the upper side of the bottom lid 25a (the arcuate portion on the right side in the orbit) 37 at the start end).

  The second moving support 42f is fixedly supported on the third support member 45 by a mounting bolt 49 penetrating through a long hole 48 that is long in the left-right direction of the second moving support 42f. The configuration is such that the mounting position in the left-right direction can be changed. The second moving support 42f has a U-shaped shape in plan view, which is divided into two parts: a position adjusting portion provided with a long hole 48 and a bottom lid 25a support portion supporting the bottom lid 25a. The second sub-fixing support 42c is disposed between the position adjusting portion and the bottom lid 25a support portion, and the bottom lid 25a can be reliably supported by taking over the second sub-fixing support 42c. It is said. Further, when the mounting position of the second moving support 42f is set to the position (left end position) closest to the upper side of the bottom lid 25a by the long hole 48, the support portion of the bottom lid 25a is connected to the second sub-fixing support 42c and the second The second sub-supporting support 42d and the second and third sub-fixing supports 42c and 42d are compactly arranged.

  The mounting bolt 49 is located on the inner side (front side) of the surrounding area of the seedling supply cup 25, and can be easily tightened or relaxed from above without the seedling supply cup 25 getting in the way. In addition, when a seedling base for placing a spare seedling inside the circumference of the seedling supply cup 25 is configured, a hole is opened at the upper position of the mounting bolt 49 in the seedling base, and the mounting bolt 49 is inserted from the hole. It can be configured to be easily tightened or relaxed. Moreover, the said hole can be combined with the drain hole for draining the water collected on the seedling stand.

  Two elongated holes 46 and 48 and two mounting bolts 47 and 49 for changing the positions of the first moving support 42e and the second moving support 42f are provided on the left and right sides, respectively, and the first moving support 42e. In addition, the second moving support 42f is configured to be movable in the left-right straight direction. Further, the amount of position change of the first moving support 42e and the second moving support 42f is regulated by the long holes 46 and 48 to the arrangement pitch in the seedling supply cup 25, and planting which will be described later by this regulating means. The drop supply positions 39 and 40 are not adjusted to an incorrect position by changing the position.

  Accordingly, the first seedling supply cup 25b moves to the position where the bottom cover 25a of the first seedling supply cup 25b is not supported at the end (right end) on the lower side of the bottom cover 25a of the first moving support 42e. Then, the bottom lid 25a of the first seedling supply cup 25b is opened. That is, the end (right end) on the lower side of the bottom lid 25a of the first moving support 42e is the first (left) drop supply position 39. Further, the second seedling supply cup 25c moves to the position where the bottom cover 25a of the second seedling supply cup 25c is not supported at the end (right end) on the lower side of the bottom cover 25a of the second moving support 42f. Then, the bottom lid 25a of the second seedling supply cup 25c is opened. That is, the end (right end) of the second moving support 42f on the lower side of the bottom lid 25a is the second (right) drop supply position 40. The second sub-fixing support 42c constitutes an opening restricting means for preventing the bottom cover 25a of the second seedling supply cup 25c from being opened at the first drop supply position 39 on the upper side of the circulation.

  Accordingly, when the first moving support 42e is positioned on the most peripheral lower side (right side) by the long hole 46, and the second moving support 42f is positioned on the most peripheral upper side (left side) by the long hole 48, the first The distance between the drop supply position 39 and the second drop supply position 40 is the smallest, and the space between the planting strips is the narrowest. At this time, the interval between the left and right drop supply positions 39, 40 is three times the arrangement pitch in the seedling supply cup 25, that is, 1.5 times the arrangement pitch in the first and second seedling supply cups 25b, 25c. On the other hand, when the first moving support 42e is positioned on the most circumferential upper side (left side) by the long hole 46, and the second moving support 42f is positioned on the most lower rotating side (right side) by the long hole 48, the first The distance between the second drop supply position 39 and the second drop supply position 40 is the largest, and the space between the planting strips is the widest.

  At this time, the distance between the left and right drop supply positions 39, 40 is 5 times the arrangement pitch in the seedling supply cup 25, that is, 2.5 times the arrangement pitch in the first and second seedling supply cups 25b, 25c. Accordingly, each drop supply position 39, 40 can be changed in position by the arrangement pitch in the seedling supply cup 25, and the distance between the left and right drop supply positions 39, 40 is the first and second seedlings. It changes by the distance of an integral multiple (1 times) of the arrangement pitch in the supply cups 25b, 25c (an even multiple (2 times) of the arrangement pitch in the seedling supply cup 25).

  As shown in FIG. 5, the seedling planting device 23 includes a beak-shaped seedling planting body 5 whose tip is directed downward, and a position where the lower end of the seedling planting body 5 is above the field scene and the field scene. The vertical movement mechanism 4 that moves the seedling planting body 5 up and down so as to move up and down to the lower position, and the lower end portion of the beak-shaped seedling planting body 5 is closed to receive seedlings from above and accommodate seedlings inside An opening / closing mechanism 50 for opening and closing the seedling planting body 5 is provided in a closed state that allows the seedling planting body 5 to open in a left and right direction and an open state in which the seedling accommodated inside can be released downward.

  This seedling planting machine 1 has a configuration of a plurality of seedlings in which a plurality of seedling planting bodies 5 are arranged side by side at set intervals. In this example, it is set as the structure of the two-row planting which arrange | positioned the seedling planting body 5 side by side with the set space | interval at a set interval.

  The two seedling planting bodies 5 are attached to the vertical movement mechanisms 4 provided on the left and right side portions of the planting transmission case 22 as a unit. A beak-shaped seedling planting body 5 having a tip facing downward is composed of a left seedling planting body 5L and a right seedling planting body 5R, and is divided into left and right parts. And the right seedling planting body 5R rotate in the left-right direction to open the lower end. In addition, the right and left seedling planting body 5 is configured to vertically move and open and close synchronously by the vertical movement mechanism 4 and the opening and closing mechanism 50, and to plant two seedlings in a row on the farm field.

  The seedling guide 51 is a cylindrical body that is provided above the seedling planting body 5 and guides the seedlings supplied from the seedling feeding device 24 into the seedling planting body 5, and is dropped and supplied from the seedling feeding device 24. The seedling can be accurately supplied into the seedling planting body 5.

  The vertical movement mechanism 4 of the seedling planting body 5 is provided on both right and left sides of the planting transmission case 22. Specifically, the upper and lower lifting links in which the front part is attached to the shafts 58 and 63 projecting to the left and right sides of the planting transmission case 22 so that the front part can be turned up and down and the rear part is connected to the seedling planting body 5. 52, 53, a drive shaft 54 that rotates from the side of the planting transmission case 22, a drive arm 55 that is attached so as to rotate integrally with the drive shaft 54, and a rotational outer peripheral side of the drive arm 55 An interlocking arm 56 is rotatably connected to the end portion and the upper lifting link 52. The rear end portions (rotating tip portions) of the upper and lower elevating links 52 and 53 are pivotally attached to and connected to the connecting member 57. The seedling planting body 5 is attached to the connecting member 57.

  Therefore, when the drive arm 55 is driven and rotated by the rotation of the drive shaft 54, the elevating links 52 and 53 are moved up and down, and the right and left seedling planting bodies 5 are moved up and down. The lower end portion of the seedling planting body 5 is positioned above the field scene at the ascending position of the vertical movement, and the lower end portion of the seedling planting body 5 is positioned below the field scene at the lowering position.

  Further, the rotation fulcrum shaft 58 of the upper elevating link 52 is provided at a position that is eccentric from the center axis of the output shaft 59 at the tip of the planting output shaft 59 that projects from the planting transmission case 22 and rotates. The rotation of the planting output shaft 59 moves around the axis of the planting output shaft 59 while rotating with an eccentric amount (the distance between the pivot fulcrum shaft 58 and the axis of the planting output shaft 59) as a radius. When the upper lift link 52 moves up and down, the pivot fulcrum shaft 58 moves back and forth, so that the seedling planting body 5 is tilted back and forth during the up and down movement, and the seedling planting body 5 is viewed from the side. It is configured to move up and down along a loop-like operating locus.

  Next, the opening / closing mechanism 50 of the seedling planting body 5 will be described. The end of the inner wire 61a of the opening / closing cable 61 is connected to the tip of the right opening / closing arm 60 provided at the upper part of the right seedling planting body 5R, and the left opening / closing function provided at the upper part of the left seedling planting body 5L. The end of the outer cable 61 b of the opening / closing cable 61 is connected to the tip of the arm 62.

  An operating arm 64 having a base pivotably attached to a pivot fulcrum shaft 63 pivotally attached to the base of the lower lift link 53 is provided, and the inner end of the opening / closing cable 61 is provided at the distal end of the working arm 64. The other end of the wire 61a is connected, and the other end of the outer cable 61b of the opening / closing cable 61 is supported on the machine body side.

  FIG. 5 shows the left seedling planting device 23, and the right seedling planting device 23 is symmetrical with the left seedling planting device 23. The end portion of the outer cable of the opening / closing cable is connected to the end portion, and the end portion of the inner wire of the opening / closing cable is connected to the tip portion of the right opening / closing arm portion.

  The operating arm 64 is attached so as to rotate integrally with the planting output shaft 59 that rotates and moves the rotation fulcrum shaft 58 pivotally attached to the base of the upper lifting link 52, and rotates forward at a set timing. It is configured to do.

  With the above configuration, when the seedling planting body 5 is moved up and down by the drive rotation of the drive shaft 54 and reaches the lower end position, the operating arm 64 is rotated forward and the inner cable 61b of the opening / closing cable 61 is inner. The wire 61a is pulled to the arrow A side and the right opening / closing arm 60 and the left opening / closing arm 62 are rotated so as to approach each other, and the right seedling planting body 5R is rotated to the right and interlocked therewith. Then, the left seedling planting body 5L rotates to the left, and the lower side of the seedling planting body 5 opens to the left and right and opens downward. Then, the seedling planting body 5 rises and the operating arm 64 rotates to the original position (rear side) with respect to the seedling planting body 5 due to the change of the cam action position, so that the inner wire 61a of the opening / closing cable 61 is rotated. Is loosened and the lower part of the seedling planting body 5 opened to the left and right is closed.

  As described above, since the seedling planting body 5 is configured to be opened and closed by the opening and closing cable 61, the opening and closing cable 61 has a higher degree of freedom of connection than the conventional opening and closing mechanism using a rod or link. The left arm planting body 5L and the right seedling planting body 5R can be rotated in different directions (left and right directions) by the actuating arm 64 that is actuated at the same time. The desired opening / closing amount can be obtained. The left seedling planting body 5 </ b> L and the right seedling planting body 5 </ b> R are rotationally biased by the spring 65 toward the side where the lower part of the seedling planting body 5 is closed.

  Respective rotation front end portions (rear end portions) of the upper and lower lift links 52 and 53 of the vertical movement mechanism 4 are connected to a connection member 57 via upper and lower connection shafts 66 and 67, respectively. The connecting member 57 includes a plate 68 that is triangular in a side view on the left and right sides, and the left and right plates 68 sandwich the tip ends of the upper and lower elevating links 52 and 53. A columnar boss 69 extending in the left-right direction is provided. The connecting shafts 66 and 67 and the boss 69 are arranged near the triangular apexes of the plate 68 in a side view, and the boss 69 is arranged on the rear side of the upper and lower connecting shafts 66 and 67. The upper and lower connecting shafts 66 and 67 and the upper and lower elevating links 52 and 53 do not get in the way when a position adjusting shaft 70 described later is slid with respect to the boss 69.

  The left and right plates 68 are substantially equilateral triangles, and the upper and lower connecting shafts 66 and 67 are turned upside down so that the connecting member 57 can be attached. The boss hole at the center of the cylindrical boss 69 has a hexagonal shape (polygonal shape). On the other hand, a hexagonal (polygonal) position adjusting shaft 70 extending in the left-right direction is fixedly provided at the base of the seedling planting body 5. Therefore, the position adjusting shaft 70 is inserted into the boss 69 and the seedling planting body 5 is supported by the connecting member 57, and the position adjusting shaft 70 is slid with respect to the boss 69 and moved in the left-right direction. It is the structure which can change the left-right position of the planting body 5. FIG. The change in the left and right position of the seedling planting body 5 is the arrangement pitch in the seedling supply cup 25 so that the seedling planting body 5 is positioned below the drop supply positions 39 and 40 in accordance with the change of the drop supply positions 39 and 40. The length of the position adjusting shaft 70 is set so that the minute distance can be changed.

  That is, the interval between the left and right seedling planting bodies 5 can be changed by an integral multiple (1 time) of the arrangement pitch in the first and second seedling supply cups 25b and 25c, and the boss 69 and the position adjusting shaft 70 can be changed. The planting position change mechanism which can move the seedling planting body 5 by the above is comprised.

  A rack 70a is provided at the end of the hexagonal section (polygonal) position adjusting shaft 70, and the pinion 71a attached to the rotating shaft of the stepping motor 71 supported and fixed to the outer surface of the triangular plate 68 is Since the position adjusting shaft 70 is engaged with the rack 70 a, the position adjusting shaft 70 is supported by the columnar boss 69 by the operation of the stepping motor 71, and the inside of the boss 69 can be moved in the left-right direction. Therefore, the left-right position of the seedling planting body 5 can be changed. By changing the left and right positions of the seedling planting body 5, fine adjustment can be made so that the seedling planting body 5 is positioned below the drop supply positions 39 and 40 in accordance with the change of the drop supply positions 39 and 40. Note that a grease nipple 69a is provided on the boss 69 so that the position adjusting shaft 70 can slide smoothly in the boss 69 so that lubricating oil can be supplied as appropriate.

  The left and right position adjustment of the seedling planting body 5 is performed at a timing when the seedling planting body 5 rises out of the soil in the field, and the seedling height planted on the ridge U of the entire stroke of the seedling planting body 5 If it is performed while rising from the top of the seedling to the bottom lid 25a of the seedling supply cups 25b, 25c (between the height A in FIG. 5), the planting posture of the seedling is not affected. Moreover, there is no possibility that the seedling is bitten into the bottom lid 25a of the seedling supply cups 25b and 25c. If adjustment of the left and right position of the seedling planting body 5 is performed at a position lower than the seedling height planted on the ridge U, the seedling planting body 5 may hit the seedling planted and may destroy the seedling planted.

  The raising timing of the seedling planting body 5 is determined by the one rotation detection switch 72 of the planting output shaft 59 that is switched on every time a predetermined portion of the planting output shaft 59 makes one rotation. When the one-rotation detection switch 72 detects a predetermined position of the planting output shaft 59, the left and right of the seedling planting body 5 are controlled by the operation control of the stepping motor 71. It is the structure which moves.

Further, as the operation control switch for the stepping motor 71 that changes the right and left position of the seedling planting body 5, the reference position X of the striations (the position set as the reference within the change range of the planting positions in the interstitch change) is changed. If two reference positions setting switch 91a (FIG. 2) and stroke amount setting switch 91b for determining a stroke amount (distance Y in FIG. 5) with respect to the inter-row reference position X are provided on the operation panel 91 shown in FIG. Easy setting. Then, when the seedling drop supply position of the seedling supply cup 25 after the gap adjustment is different from the set value of the stroke amount from the reference position X, an operation of putting a main clutch (not shown) by the main clutch lever 87 The operator is warned with a buzzer sound.
Thus, if the right-and-left position of the seedling planting body 5 is adjusted, it can be set between arbitrary strips while maintaining the seedling planting work efficiency, and the strips can be easily changed.

  Further, when the operation of the motor 71 is stopped at the top dead center and the bottom dead center of the seedling planting body 5, the seedling planting body 5 stops moving in the horizontal direction (moves in the vertical direction). Stabilization of seedling planting can be achieved. FIG. 7 is a diagram showing the operation of the motor 71 until the seedling planting body 5 moves to the top dead center. FIG. 7A shows the locus of the lower end portion of the seedling planted body 5 as viewed from the side surfaces of the lifting links 52 and 53, and FIG. 7B shows the seedling planted body 5 as viewed from the back surface of the lifting links 52 and 53. The operation | movement aspect of the motor 71 performed between the locus | trajectory of the lower end part of this and the up-and-down movement of the seedling planting body 5 is shown.

  In addition, the opposite apexes of the hexagonal shape (polygonal shape) of the cross section of the position adjusting shaft 70 are positioned up and down, and the section coefficient for bending in the vertical direction is improved. The strength necessary for cantilevering the body 5 can be obtained.

  At this time, the distance between the left and right drop supply positions 39, 40 is 5 times the arrangement pitch in the seedling supply cup 25, that is, 2.5 times the arrangement pitch in the first and second seedling supply cups 25b, 25c. Accordingly, each drop supply position 39, 40 can be changed in position by the arrangement pitch in the seedling supply cup 25, and the distance between the left and right drop supply positions 39, 40 is the first and second seedlings. It changes by the distance of an integral multiple (1 times) of the arrangement pitch in the supply cups 25b, 25c (an even multiple (2 times) of the arrangement pitch in the seedling supply cup 25).

  With the above-described configuration, the first and second seedling supply cups 25b and 25c are arranged for each arrangement pitch (one row of seedlings) while the vertical movement of the seedling planting body 5 is operated for one cycle by the operation of the vertical movement mechanism 4. Moves around the supply cup 25). The timing at which the bottom cover 25a of the seedling supply cup 25 is opened at the drop supply positions 39 and 40 is set to be when the seedling planting body 5 is raised to just below the seedling supply cup 25. Thus, the seedling supply cup 25 can supply seedlings simultaneously without passing through the two seedling planting bodies 5 without causing seedling supply leakage while passing through the upper part of the two seedling planting bodies 5 in series. It is possible to supply seedlings to the two seedling planting bodies 5 without leaving a seedling supply cup 25 in which seedlings are not supplied after passing over one seedling planting body 5, and the seedling supply operation is performed. The seedling can be supplied with certainty and reliably supplied to the two seedling planting bodies 5.

  In addition, the seedling planting machine 1 has front and rear pressure wheels 15 and 73. The pair of front pressure wheels 15 not only level the surface before planting the seedling but also provide a sensor wheel for adjusting the height of seedling planting. It also has a function of adjusting the height of the airframe by operating a hydraulic cylinder (not shown) in the mission case 8 according to the grounding position of the front pressure reducing wheel 15 and operating the lifting hydraulic cylinder 14. . Further, the rear pressure ring 73 reduces the soil around the seedling while covering the periphery of the planted seedling. The front and rear pressure-reducing wheels 15 and 73 can be accommodated on the upper side by operating the lever 74 when the vehicle is turning.

  A left and right support shaft 76 extending in the left-right direction is provided at the pivoting tip of an arm 75 that rotates up and down integrally with the lever 74, and the lower end of the vertical support shaft 77 provided so as to penetrate the left and right support shaft 76 vertically. A rear pressure wheel 73 is rotatably provided at the part. In addition, the said up-and-down support shaft 77 is provided for every planting strip, and two are provided in the right and left. The left and right support shafts 76 include left and right movable parts through which the upper and lower support shafts 77 penetrate, and a fixed part connected to the arm 75 between the left and right movable parts, and the movable part is the fixed part. On the other hand, it is configured to slide in the direction of the shaft 76 (left and right direction). Accordingly, the rear pressure wheel 73 can be moved to the left and right by sliding the movable part in accordance with the change in the left and right positions of the left and right seedling planting bodies 5. In addition, it is good also as a structure which the front pressure wheel 15 also moves right and left according to the left and right movement of the rear pressure wheel 73.

  Further, a seat 79 facing backward is provided above the bonnet 78 so as to face the seedling supply device 24 side, and a flat step 80 for placing a foot between the seedling supply device 24 is provided. The seat 79 is supported by the airframe via a support frame 81 that extends upward through the left and right sides (right side) of the bonnet 78.

  The step 80 includes a main step 82 disposed between the seat 79 and the seedling supply device 24 in plan view of the body, and sub-steps 83 provided on the left and right sides of the seat 79 and the bonnet 78. The sub-step 83 extends forward and backward from the front end portion of the airframe to near the main step 82, the front portion 83a is configured to be one step lower than the rear portion 83b, and allows an operator to get on and off from the front end portion of the airframe. It is configured. An elevating mechanism (rolling cylinder 11, rod 13, etc.) for raising and lowering the wheel (rear wheel) 7 can be arranged below the rear part 83 b which is the upper stage of the sub-step 83, and the space of the airframe is effectively used. To make the aircraft more compact.

  Further, a chain transmission case 9 serving as a traveling transmission case that rotates up and down can be disposed below the rear portion of the substep 83 in accordance with a tread change of the wheel (rear wheel) 7. In addition, a rising portion 82a that rises while being inclined upward is provided at the rear end portion of the main step 82, and an operator's foot sitting on the seat 79 is attached to the vertical movement mechanism 4 of the seedling planting device 23 by the rising portion 82a. Protects against contact. Further, by positioning the rising portion 82a below the seedling supply device 24, the longitudinal length of the machine body can be shortened. Moreover, the main step 82 is provided with the rising portion 82a, whereby the strength is improved. It should be noted that at the rising portion 82a, the driving main clutch lever 84 for turning on and off the left and right rear wheels 7, the seedling planting device 23 and the seedling feeding device 24, and the driving of the left and right rear wheels 7 can be cut off. Left and right side clutch pedals 85 are provided so that an operator in the seat 79 can stop the aircraft and correct the traveling direction of the aircraft.

  In the above description, the sub-step 83 is provided on both the left and right sides. However, the sub-step 83 may be provided on only one of the left and right sides. In this case, the sub-step 83 may be provided on the side without the support frame 81 (left side). If the step 83 is provided, the support frame 81 can easily get on and off by the sub-step 83 without obstructing.

  A front end of the airframe between the left and right front wheels 6 is provided with a front end sensor 86 that contacts the upper surface of the front U and detects the end of the front U. The front end sensor 86 is free from wrinkles due to the forward movement of the front body. However, it is configured to detect that the terminal end of the bag is reached by reaching the place and not sensing the upper surface of the bag. Based on detection of the heel end by the heel end sensor 86, the main clutch is automatically disengaged to stop the driving of the left and right rear wheels 7, the driving of the seedling planting device 23 and the seedling supplying device 24, and the machine body is stopped. At the same time, an alarm (for example, a buzzer or the like) is issued to notify the operator.

  An operator sitting on the seat 79 faces backward in the direction of the aircraft's movement and concentrates on the seedling replenishment work, so it is difficult to confirm the front of the aircraft, and the operator has not noticed that the aircraft has reached the end of the heel. There is a risk of causing an accident such as a collision with a structure. However, the saddle end sensor 86 automatically stops the aircraft at the end of the kite and notifies the end of the kite by an alarm. It is possible to perform the seedling replenishment work to the seedling supply device 24 without worrying about the situation in front of the machine body and the position of the end of the heel, thereby improving the planting work efficiency. The heel end sensor 86 is disposed at a position to the right of the left and right center of the aircraft (tread of the left and right wheels 6 and 7), and the vertical movement accompanying the vertical movement of the left rear wheel 7 by the rolling cylinder 11 is small. The upper surface of the ridge can be detected accurately and stably. Further, the heel end sensor 86 is located in the left and right positions (the right front pressure wheel 15 and the seedling planting position) that avoid the front pressure wheel 15 and the seedling planting position of the seedling planting body 5 for controlling the height of the aircraft to the ground. Since it is provided on the left side of the position, the soil at the seedling planting position is not roughened and the planting accuracy is not reduced.

  Also, near the steering handle 2, there are a main clutch lever 87 for manually turning on and off the left and right rear wheels 7, the seedling planting device 23 and the seedling feeding device 24, and the seedling planting device 23 and the seedling feeding device 24. And a planting operation lever 88 for manually turning on and off only the drive. The planting operation lever 88 can be used to operate the lifting hydraulic cylinder 14 to manually lift and lower the machine body. Then, a sensor (detection means) for detecting the operation position of the planting operation lever 88 is provided, and only when the seedling planting device 23 and the seedling supply device 24 are operated in the drive state by the planting operation lever 88, It is configured such that the automatic stop control and alarm of the airframe are activated by the aforementioned heel end sensor 86.

  As a result, the automatic stop control and alarm of the aircraft can be activated only during planting work, and the aircraft endless sensor 86 is unnecessarily detected by the heel end sensor 86 not detecting the upper surface of the heel when traveling or turning at the heel end. Can be prevented, and the operability is improved. A seating sensor for detecting that an operator is seated on the seat 79 is provided in place of or in combination with the above-described automatic stop control of the aircraft by the planting operation lever 88 and on / off of the alarm operation. Only when the person is seated, the automatic stop control and warning of the aircraft may be activated. Further, it is possible to adopt a configuration in which an alarm is activated first by detection of a heel end by the heel end sensor 86 and the airframe automatically stops after a predetermined time (several seconds later). The airframe may be automatically stopped by stopping the engine 3.

  On the left and right sides of the seat 79, a seedling stand 89 is disposed. The seedling stage 89 lacks a part of the rectangular bottom surface of the seedling storage frame (seedling box, seedling tray, seedling container, etc.) to be placed, and the outer edge of the lacked part is the seedling supply device 24. It has a shape that follows the arc-shaped portion 37 of the orbital movement trajectory of the seedling supply cup 25 so that it does not interfere with the seedling supply to the seedling supply cup 25 when the seedling storage frame is not placed. .

  In addition, the seedling stage 89 overlaps above a part of the seedling supply cup 25 of the seedling supply device 24, but is configured to be moved to the side of the machine body by the moving link mechanism 90, so that an operator sitting on the seat 79 can It can be moved arbitrarily to a position where it is easy to perform seedling replenishment work, and when getting on and off from the front end of the aircraft via step 80, it can be moved to the outside in the left and right direction from step 80 (sub step 83) so as not to obstruct getting on and off, When loading into a truck or storing in a warehouse, it can be moved inward in the left-right direction to reduce the left-right width of the aircraft. In addition, it is good also as a structure which can move the seedling mounting stand 89 to the left-right direction outer side to the position which does not overlap above the seedling supply cup 25 of the seedling supply apparatus 24. FIG.

  Further, the moving link mechanism 90 has a structure in which the link length of each link is different. When the seedling mounting base 89 is moved inward in the left-right direction for supplying seedlings to the seedling supply device 24, the seedlings are transferred. The stage 89 is configured to face the rearward and rearward direction. Thereby, the seedling replenishment work can be facilitated.

  As described above, in this two-row seedling planting machine, narrow planting that is three times the arrangement pitch in the seedling supply cup 25, that is, 1.5 times the arrangement pitch in the first and second seedling supply cups 25b and 25c. When planting seedlings between the streaks, the left and right seedling planting bodies 25 are moved toward each other by the planting position changing mechanism including the boss 69 and the position adjusting shaft 70, and the movable part of the left and right support shaft 76 is slid. The left and right planting strip rear pressure wheels 73 are moved toward each other, and the first moving support 42e is positioned on the most peripheral lower side (right side) through the long hole 46, and the second moving support 42f. Is positioned at the uppermost side (left side) by the long hole 48, and the left and right drop supply positions 39, 40 are repositioned closer to each other.

  And when planting seedlings between wide planting strips that is 5 times the arrangement pitch in the seedling supply cup 25, that is, 2.5 times the arrangement pitch in the first and second seedling supply cups 25b, 25c, The seedling planting body 5 is moved to the side away from each other by the planting position changing mechanism, the movable part of the left and right support shaft 76 is slid to move the rear pressing wheel 73 of the left and right planting strips to the side away from each other, The first moving support 42e is positioned on the most peripheral upper side (left side) by the long hole 46, and the second moving support 42f is positioned on the most peripheral lower side (right side) by the long hole 48, so that the left and right fall supply positions 39 and 40 are moved away from each other, and the phase of the winding sprocket 29 is arranged in the seedling supply cup 25 by the rotation timing changing mechanism including the arc-shaped long hole 29a and the bolt 36. When the left and right seedling planting body 5 is moved up by changing the pitch (1/2 minute of the arrangement pitch in the first and second seedling supply cups 25b and 25c), the first (left side) is dropped. The seedling supply cup 25 for the operation of the vertical movement mechanism 4 so that the first seedling supply cup 25b reaches the supply position 39 and the second seedling supply cup 25c reaches the second (right side) drop supply position 40. Change the rotation position (phase) of.

  That is, this multi-row seedling planting machine is provided with a seedling planting body 5 configured to plant a seedling in a field by moving up and down with a predetermined movement trajectory by a vertical movement mechanism 4, respectively. A seedling supply device 24 for supplying seedlings to the appendix 5 is provided. The seedling supply device 24 is configured to provide a seedling container that includes a plurality of seedling supply cups 25 that store seedlings, and a plurality of seedling supply cups 25. A moving mechanism 26 that is arranged in a loop with an arrangement pitch of the above and sequentially moves around so as to pass above each seedling planting body 5, and the seedling supply cup 25 is positioned above the seedling planting body 5 by the moving mechanism 26. A seedling drop supply mechanism (turntable) that becomes a seedling dropping mechanism that drops and supplies the seedlings accommodated in the seedling supply cup 25 to the seedling planting body 5 that has been moved up by the vertical movement mechanism 4 when moved to the fall supply positions 39, 40 27, and the seedling drop supply mechanism 27 includes: A first seedling supply cup 25b for storing seedlings to be dropped and supplied at one of the drop supply positions 39 and a drop supply of the other are provided, including right and left drop supply positions 39 and 40 corresponding to each right seedling planting body 5. A second seedling supply cup 25c that accommodates seedlings to be supplied at a position 40 is provided separately, and the first and second seedling supply cups 25b and 25c are moved by the moving mechanism 26 to move to the respective drop supply positions. 39 and 40, the first and second seedling supply cups 25b and 25c are arranged at the same arrangement pitch, and the right and left seedling transplanted bodies along the circumferential movement path of the seedling supply cup 25 Planting position changing mechanisms 69, 70, 71, which can move the seedling planting body 5 such that the distance between the five seedlings varies by an integral multiple of the arrangement pitch in the first and second seedling supply cups 25b, 25c. 9 a and 91b are provided, and the seedling drop supply mechanism 27 is arranged so that the right and left drop supply positions 39 and 40 are in accordance with the amount of movement of the seedling planted body 5 by the planting position changing mechanisms 69, 70, 71, 91a and 91b. The drop supply positions 39 and 40 can be changed so that the interval changes, the planting position changing mechanism is configured to move both the left and right seedling planting bodies 5 to the opposite sides, and the seedling drop supply mechanism 27 is both left and right The drop supply positions 39 and 40 can be changed to opposite sides, and when the left and right seedling planting bodies 5 are moved upward in accordance with the change of the left and right drop supply positions 39 and 40, the seedling planting bodies A turning timing changing mechanism is provided that changes the turning position of the seedling supply cup 25 with respect to the operation of the vertical movement mechanism 4 so that the seedling supply cup 25 that stores the seedling that is supplied to the drop 5 reaches the drop supply positions 39 and 40. Yes.

    Accordingly, the seedling supply device 24 moves the plurality of seedling supply cups 25 around the loop path by the moving mechanism 26, and the seedling dropping supply mechanism 27 causes the first seedling supply cup 25 b to fall on one side (left side). When the second seedling supply cup 25c reaches the other (right side) drop supply position 40, the seedling is dropped and supplied to the lower seedling planting body 5. The right and left seedling planting bodies 5 are moved up and down by a vertical movement mechanism 4 along a predetermined operation locus to plant seedlings in the field.

  And when changing between planting strips, the mutual space | interval of the right and left seedling planting bodies 5 is along the circumference movement path | route of the seedling supply cup 25 by the planting position change mechanism 69,70,71,91a, 91b. The seedling planting body 5 is moved so as to change by an integral multiple of the arrangement pitch in the first and second seedling supply cups 25b, 25c, and the planting position changing mechanism 69, 70, 71, 91a, 91b is used. The drop supply positions 39 and 40 can be changed so that the distance between the left and right drop supply positions 39 and 40 changes according to the amount of movement of the seedling planting body 5. The seedling can be dropped and supplied to the seedling planting body 5 at the moved timing, and the seedling can be supplied to the seedling planting body 5 appropriately.

  When changing between the planting strips, the planting position changing mechanisms 69, 70, 71, 91a, 91b are used to move both the left and right seedling planting bodies 5 to the opposite sides, so that both the left and right fall supply positions 39, 40 is changed to the opposite side, the turning position of the seedling supply cup 25 with respect to the operation of the vertical movement mechanism 4 is changed by the turning timing change mechanism, and the right and left seedlings are planted in accordance with the change of the left and right drop supply positions 39, 40 The seedling planting body 5 is moved up and down so that the seedling supply cup 25 that accommodates the seedlings to be dropped and supplied to the seedling planting body 5 reaches the fall supply positions 39 and 40 when the appendage 5 moves up. The seedling can be dropped and supplied to the seedling planting body 5 at the timing when it is moved up by the moving mechanism 4, the seedling planting body 5 can be properly supplied, and the right and left seedling planting positions are opposite to each other. Left between desired planting strips by moving to the side It is possible to change the planting position to instill seedlings symmetrical positions with respect to the center of the ridge across the wheel 6 and 7.

  Therefore, even if the spacing between the planting lines is changed, the seedling can be properly supplied to the seedling planting body 5 and the planting accuracy of the seedling can be maintained. Further, the distance between the planting strips can be easily changed by moving the seedling planting body 5 and changing the drop supply positions 39 and 40. In particular, even if the spacing between the planting lines is changed, the correspondence between the left and right drop supply positions 39, 40 and the seedling supply cups 25b, 25c that accommodate the seedlings to be supplied at the drop supply positions 39, 40 does not change. The left and right drop supply positions 39, 40 can be changed with a simple configuration of changing the positions of the first moving support 42e and the second moving support 42f, and the rotation position (phase) of the seedling supply cup 25 by the rotation timing changing mechanism. ) Can be changed without removing the winding of the chain 34 and the seedling supply cup 25 with a simple configuration of changing the rotational phase of the winding sprocket 29 with respect to the driven sprocket 35, and the change between the planting strips becomes easy. Note that the position change of the seedling planting body 5 and the pressure-reducing wheel 73 can be easily performed because only the movable parts of the position adjusting shaft 70 and the left and right support shafts 76 are slid.

  According to the above, the amount of change between the planting strips is a distance that is an integral multiple of the arrangement pitch in the first and second seedling supply cups 25b, 25c. The arrangement pitch between the first and second seedling supply cups 25b and 25c is changed by changing the left and right positions of the seedling planting body 5 slightly different from the drop supply position to the extent that there is no hindrance. It is also possible to set the distance between desired planting strips, different from the integral multiple distance. For example, depending on the configuration of the seedling supply cups 25b and 25c and the seedling planting body 5, it may be set to 320 mm between narrow planting strips and 480 mm between wide planting strips.

  In addition, not only the above-mentioned structure, it is set as the structure which can change the position of each fall supply position 39 and 40 by the distance of the odd multiple of the arrangement pitch in the seedling supply cup 25, and the space | interval of the left and right fall supply positions is 1st and What is necessary is just to comprise so that it may change by the distance of the integral multiple of the arrangement pitch in the 2nd seedling supply cup 25b, 25c (even multiple of the arrangement pitch in the seedling supply cup 25), and right and left according to the adjustment range between planting stripes What is necessary is just to set the change of the fall supply position.

  Moreover, instead of the above-described configuration, when changing the planting position, the spacing between the left and right seedling planted bodies 5 along the circumferential movement path of the seedling supply cup 25 by the planting position changing mechanism is first and second. One or each seedling planted body 5 is moved so as to change by a distance that is an integral multiple of the arrangement pitch in the second seedling supply cups 25b, 25c, and one or each seedling planted body by the planting position changing mechanism. It is good also as a structure which changes one or each fall supply position according to the moving amount of 5. At this time, it is not necessary to change the turning position (phase) of the seedling supply cup 25 by the turning timing changing mechanism.

  In addition, in changing a planting position, although the moving amount of each right and left seedling planting body 5 is varied, the distance between the left and right seedling planting bodies 5 is the first and second seedling supply cups 25b and 25c. It may be configured to change by a distance that is an integral multiple of the arrangement pitch at. At this time, the change amount of the rotation position (phase) of the seedling container 5 by the rotation timing change mechanism is the position change of the fall supply position with the smallest position change in the rotation path of the seedling supply cup 25 among the plurality of drop supply positions. It is good to match the amount.

  In addition, although the structure which changes the position of the right and left seedling planting bodies 5 and the drop supply positions 39 and 40 in the left-right straight direction has been described above, the left and right seedling planting bodies 5 and the fall supply positions 39 and 40 are supplied as seedlings. For example, the left and right positions may be changed while changing the position in an oblique direction in the front-rear direction in accordance with the circulation path of the cup 25.

  Moreover, although the above demonstrated the structure of 2 row planting, you may apply to the structure of 3 or more rows. At this time, the change amount of the rotation position (phase) of the seedling container 5 by the rotation timing changing mechanism is the fall supply position with the smallest position change in the circulation path of the seedling container 5 among the plurality of drop supply positions 39 and 40. It is good to match the position change amount of 39,40.

  Although the above demonstrated the structure planted in multiple rows, you may apply to the structure which staggers planting, such as the structure which varied the operation timing of the right and left seedling planting body 5, for example. In addition, when the operation timing of the right and left seedling planting bodies 5 is made different, the first and second seedling containers reach the same number of times at different timings at the respective drop supply positions 39 and 40 by the circular movement by the moving mechanism. It becomes the composition to do.

  In addition, although the above-mentioned seedling fall supply mechanism 27 demonstrated the structure which sets the fall supply positions 39 and 40 by the support body 42, in addition to this structure, the open | release operation member provided in the seedling planting body 5 is seedling planting. Restriction means for restricting the opening of the bottom lid 25a of the seedling supply cup 25 located above the body 5 is provided, and when the seedling planting body 5 is raised to just below the seedling supply cup 25, the restriction means is deregulated. You may provide the structure which makes it fall and supply a seedling.

  Further, when the arrangement position of the seedling planting body 5 shown in FIG. 5 is changed symmetrically with respect to the plane in the longitudinal direction of the body passing through the grease nipple 69a and the rotating shaft 59 in the boss 69, FIG. In this manner, the seedling planting body 5 can plant seedlings between the strips of the lateral width or more of the turntable (seedling drop supply mechanism) 27 of the seedling supply cup 25.

  Further, the stroke amount (distance Y in FIG. 5) of the seedling planting body 5 with respect to the reference position X between the strips is centered on the reference position X every rotation of the seedling planting operation of the seedling planting body 5. When the position adjusting shaft 70 is slid by the operation of the stepping motor 71 so as to be on the opposite side, staggered planting can be performed. A single staggered switch (not shown) can be provided as a switch capable of such planting.

  FIG. 8 shows a side view (FIG. 8A) and a plan view (FIG. 8B) of a portion where the seedling supply cup 25 is disposed on the turntable 27. The seedling supply cup 25 is sequentially connected as shown in FIG. 8A by a connection chain 28 provided with a hole through which two adjacent seedling supply cups 25, 25 are passed. Further, the bottom lid 25a of the seedling supply cup 25 can be rotated around the hinge 25a2, and the seedling in the cup 25 falls to the seedling planting body 5 when the bottom lid 25a is opened.

The opening timing of the bottom cover 25a is adjusted by one switching lever 94 for the left and right timing plates (first timing plate 92a and second timing plate 92b).
Plates 92a1 and 92b1 made of elastic resin are attached to the lower surfaces of the first timing plate 92a and the second timing plate 92b, and the plates 92a and 92a1 and the plates 92b and 92b1 are integrally formed with the manual switching lever 94, respectively. Move in conjunction with the operation of.

  If the end portions of the first timing plate 92a and the second timing plate 92b are in contact with the protruding portions 25a1 and 25b1 of the bottom lid 25a, the bottom lid 25a is not opened, but the first timing plate 92a and the second timing plate 92b are not opened. When the end portion of the timing plate 92b is detached from the projection 25a1 and the projection 25b1 of the bottom lid 25a, the bottom lid 25a is opened.

  The switching lever 94 is formed by integrally connecting a lever 94a extending in the vertical direction and a lever 94b bent 90 degrees from the tip of the lever 94a, and the base of the switching lever 94a is fixed to the link member 95a. Further, the link member 95a rotates around the connection portion with the lever 94b by the rotation of the lever 94b in the direction of arrow A. One end of each of the link members 95b and 95c is rotatably connected to both ends of the link member 95a, and the other end of each of the link members 95b and 95c is rotatably connected to the plate 92a1 and the plate 92b1, respectively. ing. Therefore, when the plate 92a1 and the plate 92b1 slide by the rotation of the link members 95b and 95c, the first timing plate 92a and the second timing plate 92b integrated with the plate 92a1 and the plate 92b1 also slide.

Thus, by operating the lever 94, the opening timing of the bottom lid 25a can be adjusted by sliding the first timing plate 92a and the second timing plate 92b.
In addition to the open position of the bottom cover 25a, the bottom cover 25a is in contact with a support body 42 that supports the bottom cover 25a so that the bottom cover 25a maintains a closed position below the bottom cover 25a.

In FIG. 9, the top view which consists of a structure of the turntable 27 of the seedling supply cup 25 of another Example of this invention is shown.
In this case, two sets of chains of the first chain 96a and the second chain 96b are used for the turntable 27, and the conveying pitch of the seedling supply cup 25 is changed between the operator side and the seedling planting body 5 side. The seedling supply cup 25 is transported by the first chain 96a on the seedling planting body 5 side, and further, the seedling supply cup 25 is transported so that the interval between the adjacent seedling supply cups 25 is relatively large. It is conveyed by the second chain 96b, and is conveyed so that the interval between the adjacent seedling supply cups 25 is relatively small. Thus, in the second chain 96b, the operator can easily supply the seedling to the cup 25.

  Further, while the seedling supply cup 25 is transported by the first chain 96a and the second chain 96b, the interval between the adjacent seedling supply cups 25 can be changed without any trouble between the first chain 96a and the second chain 96b. A permanent magnet (or electromagnet) 97 or the like is provided on the outer peripheral side of the first chain 96a and the second chain 96b in contact with the seedling supply cup 25, and the seedling supply cup 25, the first chain 96a, and the second chain 96b are coupled to each other. And allow separation. At this time, by changing the polarity of the magnet 97 to which the seedling supply cup 25 is attracted by the first chain 96a and the second chain 96b, the attraction force of the seedling supply cup 25 by the first chain 96a and the second chain 96b is changed. Therefore, it is desirable that the interval between adjacent seedling supply cups 25 can be easily adjusted. If the magnet 97 of the first chain 96a is an electromagnet, the polarity of the adjacent magnets 97 can be freely changed, so that the interval between the adjacent seedling supply cups 25 supplied to the seedling planting body 5 can be easily adjusted.

  In order to facilitate the adjustment of the interval, if the seedling supply cup 25 and its bottom lid 25a are composed of electromagnets and the bottom lid 25a is normally closed, the timing can be easily adjusted according to the degree of the interval adjustment. The bottom lid 25a can be opened well.

Furthermore, it is good also as a structure which can adjust the space | interval of the suppression wheel 73 at the time of a streak adjustment. FIG. 10 is a view as seen from the rear of the aircraft showing an example. The rotary shafts 99 that respectively support the pressure-reducing wheel frames 98 are arranged on the same axis in a state where they are divided by left and right strips. The rotary shaft 99 is composed of a square bar portion 99a and a round bar portion 99b. A connecting portion between the vertical support shaft 77 connected to the swing arm 75 and the rotary shaft shaft 99a has a square bar portion 99a of the rotary shaft 99. A cylindrical portion 100 having a square pipe shape is provided on the inner diameter side through which the rotation shaft shaft 99 and the pressure reducing wheel frame 98 are connected. The inner diameter side through which the square rod portion 99a of the rotation shaft shaft 99 passes is a square pipe shape. A cylindrical portion 101 is provided, and a cylindrical portion 114 having a circular pipe shape on the inner diameter side through which the round bar portion 99b of the rotary shaft 99 passes is provided to connect the pair of left and right rotary shafts 99. The cylindrical portion 114 is provided at the tip of the arm 103 that is directly supported by the body frame 20.
Accordingly, since the pressure-reducing wheel frame 98 is slidable along the rotation shaft 99, the space between the pressure-reducing wheels 73 can be easily adjusted when adjusting the striations.

  FIG. 11 is a view of the modified example of FIG. 10 as seen from the rear, and the round bar portion 99b of the left and right divided portions of the rotating shaft 99 divided by the left and right strips is inserted and connected. The outer side of the cylindrical portion 101 provided at the pair of connecting portions of the pressure-reducing wheel frame 98 to the connecting rod 110 provided on the cylindrical pipe 106 whose inner diameter side is a round pipe shape and the square rod portion 99a of the rotating shaft 99 is turned. The dynamic shaft 99 is detachably supported, and link arms 109 extending in the direction orthogonal to the shaft 99 and extending to the main frame 20 side are fixed.

  The connecting arm 110 extending from the cylindrical pipe 106 is connected to the rotating frame 111 on the main frame 20. The rotation frame 111 rotates around a rotation fulcrum 20 a provided on the main frame 20. The pair of link arms 109 and the connecting arm 110 are connected to the rotating frame 111 on the main frame 20.

  A fixing member 112 having a slide hole 112 a provided in a direction parallel to the rotation shaft 99 is fixed to the main frame 20. One end of a pair of link arms 109 is slidably supported in the slide hole 112a of the fixing member 112, and the one end of the pair of link arms 109 and the rotating frame 111 are rotated by links 113, respectively. Connected freely. Each end portion of the rotation shaft 99 is inserted and supported inside the cylindrical portion 117, and the cylindrical portion 117 is provided at both ends of the bridge body 116 fixed to the main frame 20. 73 is stably supported by the airframe.

When the rotation frame 111 rotates about the rotation fulcrum 20a with the above configuration, one end of the pair of link arms 109 slides in the slide hole 112a of the fixed member 112 at the same time on the square bar of the rotation shaft 99. A pair of pressure-reducing wheel frames 98 slides the same distance from the center.
In this way, the interval between the pressure-reducing wheels 73 can be adjusted at the same time as the interval adjustment.

  The seedling planting machine of the present invention is not limited to vegetable seedlings and may be used as a seedling planting machine for planting other seedlings. Moreover, although the riding-type seedling planting machine has been described in detail, a walking-type seedling planting machine may be used.

It is a side view of the seedling transplanter of the example of the present invention. It is a top view of the seedling transplanter which abbreviate | omitted illustration of the rear suppression wheel of the seedling transplanter of FIG. FIG. 3 is a plan view showing a support of the seedling planting machine in FIG. 1 (FIG. 3A shows a case between narrow planting strips, and FIG. 3B shows a case between wide planting strips). FIG. 5 is a plan view (FIG. 4 (a)) and a perspective view (FIG. 4 (b)) showing a winding sprocket of the seedling transplanter in FIG. 1 and its periphery. It is a perspective view of the seedling planting apparatus of the seedling planting machine of FIG. FIG. 6 is an image diagram in a case where the seedling planted body of FIG. 5 can plant seedlings between strips that are equal to or larger than the lateral width of the turntable of the seedling supply cup. FIG. 5 is a view (FIG. 5 (a) is a side view and FIG. 5 (b) is a rear view) showing how the motor operates until it moves to the top dead center of the seedling planted body of FIG. It is a side view (Drawing 8 (a) and a top view (Drawing 8 (b)) of a part with a seedling supply device of a seedling transplanter of Drawing 1. It is a top view which shows the structure of the turntable of the seedling supply cup of the seedling supply apparatus of another Example of this invention. It is the figure seen from the back of the airframe which shows the structure which can adjust the space | interval of a suppression wheel at the time of adjustment of the streak of the seedling transplanter of FIG. It is the figure seen from the back of the airframe which shows the modification of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seedling machine 2 Steering handle 3 Engine 4 Vertical movement mechanism 5 Seedling planting body 6 Front wheel 7 Rear wheel 8 Transmission case 9 Chain transmission case 9a Rotating fulcrum 10 Axle 11 Rolling cylinder 12 Balance rod 13 Rod 14 Lifting hydraulic cylinder 14a Piston rod 15 Front pressure reducing wheel 16 Arm 17 Front wheel support frame 18 Arm portion 19 Axle 20 Airframe frame 20a Rotating fulcrum 21 Transmission shaft 22 Planting transmission case 23 Seedling planting device 24 Seedling supply device 25 (25b, 25c) Seedling supply cup 25a Bottom cover 25a1, 26b1 Protrusion 25a2 Hinge 26 Moving mechanism 27 Seedling drop supply mechanism (turntable) 28 Linkage 29 Sprocket 29a Arc-shaped long hole 30 Rotating shaft 31 Support frame 32 Output shaft 33 Drive sprocket 34 Chain 35 Driven sprocket 36 Bol G 37 Arc-shaped portion 38 Linear portion 39, 40 Drop supply position 41 Protrusion 42 Support body 43 First support member 44 Second support member 45 Third support member 46, 48 Long hole 47, 49 Mounting bolt 50 Opening / closing mechanism 51 Seedling Guides 52, 53 Lifting link 54 Drive shaft 55 Drive arm 56 Interlocking arm 57 Connecting member 58 Rotating fulcrum shaft 59 Planting output shaft 60 Right opening / closing arm 61 Opening / closing cable 62 Left opening / closing arm 63 Rotating fulcrum shaft 64 Actuating arm 65 Spring 66, 67 Connecting shaft 68 Triangular plate 69 Cylindrical boss 69a Grease nipple 70 Position adjusting shaft 70a Rack 71 Stepping motor 71a Pinion 72 Single rotation detection switch 73 Pressure reducing wheel 74 Lever 75 Arm 76 Left / right support shaft 77 Vertical support shaft 78 Bonnet 79 Seat 80 81 Support frame 82 Main step 82a Rising part 83 Substep 84 Riding main clutch lever 85 Side clutch pedal 86 畝 End sensor 87 Main clutch lever 88 Planting operation lever 89 Seedling stand 90 Moving link mechanism 91 Operation panel 91a Reference position Setting switch 91b Stroke amount setting switch 92a First timing plate 92b Second timing plate 92a1, 92b1 Elastic resin plate 94 (94a, 94b) Switching lever 95a, 95b, 95c Link member 96a First chain 96b Second chain 97 Magnet 98 Suppression Wheel frame 99 Rotating shaft shaft 99a Square bar portion 99b Round bar portion 100, 101 Cylindrical portion 103 Arm 106 Cylindrical pipe 109 Link arm 110 Connecting arm 111 Rotating frame 112 Fixed member 112a Slide hole 113 Link 114 Cylindrical portion 116 Bridge body 117 Cylindrical pipe U

Claims (1)

A vertical planting mechanism (4) moves up and down along a predetermined operating locus to plant seedlings (5) on the left and right, respectively, so that seedlings are planted in the field. A seedling supply device (24) for supplying is provided, and the seedling supply device (24) loops a plurality of seedling containers (25) for storing seedlings and the plurality of seedling containers (25) at a predetermined arrangement pitch. And a moving mechanism (26) that sequentially moves around the seedling planting bodies (5) so as to pass around the seedling planting bodies (5), and the moving mechanism (26) causes the seedling container (25) to become a seedling planting body ( 5) When moving to the drop supply position (39, 40) which is the upper position of 5), the seedling accommodated in the seedling container (25) is dropped and supplied to the seedling planting body (5) moved up by the vertical movement mechanism (4). A seedling fall supply mechanism (27), and the seedling fall supply mechanism (27) corresponds to the right and left seedling planting bodies (5). Each of the right drop supply positions (39, 40) includes a first seedling container (25b) for storing seedlings to be supplied at one drop supply position (39) and the other fall supply position (40). A second seedling container (25c) for storing the seedlings to be supplied is provided separately, and each of the first and second seedling containers (25b, 25c) is moved in a circular motion by the moving mechanism (26). In a multi-row planting seedling machine configured to reach the drop supply position (39, 40) the same number of times,
The distance between the left and right seedling planting bodies (5) along the circumferential movement path of the seedling container (25) is an integral multiple of the arrangement pitch of the first and second seedling containers (25b, 25c). A planting position changing mechanism (69, 70, 71, 91a, 91b) capable of moving the seedling planting body (5) to change is provided, and the seedling dropping supply mechanism (27) is provided with the planting position changing mechanism (69, 70). 70, 71, 91a, 91b), the drop supply position (39, 40) so that the distance between the left and right drop supply positions (39, 40) changes according to the amount of movement of the seedling planting body (5). The configuration can be changed,
The planting position change mechanism (69, 70, 71, 91a, 91b) moves the seedling planting body (5) to the left and right so that the interval can be set. The vertical movement mechanism (4) allows the seedling planting body (5 ) Is provided with a structure for moving the seedling planting body (5) to the left and right at the timing when it rises out of the soil.

Images