JP2010226982A - Riding type seedling transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that conventionally a small-sized riding type seedling transplanter is equipped with a seat arranged on a machine body furnished with right and left front wheels and right and left rear wheels, a seedling feeder opposed to the seat and a seedling planting apparatus below the seedling transplanter, an operator sits on the seat, easily performs a seedling planting operation, has an excellent operation efficiency by the riding type seedling transplanter, however, since the operator sits on the seat with the back in the advance direction of the machine body, the operator has problems of a little feeling of insecurity, can not observe the advance direction of the machine body in the seedling feed operation to the seedling feeder and does not know the end of ridge. <P>SOLUTION: The riding type seedling transplanter is equipped with an engine 3 at the rear of the machine body, a planting part P at the front of the machine body, and the seat 79 on which an operator sits toward the front of the machine body behind the machine body of the planting part P. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a riding seedling planter provided with a seat on which an operator sits.

  A small riding seedling planter in which a seat is arranged on a machine body provided with left and right front wheels and left and right rear wheels, a seedling supply device is provided facing the seat, and a seedling planting device is provided below the seedling supply device. is there. According to this riding seedling planting machine, an operator can sit on the seat and perform seedling planting work, so that the seedling planting work can be performed easily and the work efficiency is good.

JP 2008-237104 A

  In the above background art, the operator can sit on the seat and perform the seedling planting work, the seedling planting work can be easily performed, and the work efficiency is good. Since the operator is seated on the seat, there is a problem that there is a little anxiety and the advancing direction of the body cannot be seen at the time of seedling supply work to the seedling supply device, and the end of the heel is not known.

In order to solve the above problems, the present invention has taken the following technical means.
That is, in the invention according to claim 1, the engine 3 is disposed on the rear side of the body, the planting part P is disposed on the front side of the body, and the worker faces the front of the body behind the body of the planting part P. This is a riding seedling transplanter with a seat 79 to be seated.

  Therefore, in the riding seedling planting machine according to claim 1, an operator can sit on the seat 79 facing the front of the machine body and perform the seedling planting work, but the planting is performed with the posture facing the front of the machine. The work can be performed on the attachment part P, so that the seedling planting work can be easily performed, and the terminal position of the heel U can be recognized, so that the work can be performed with confidence and the work efficiency is good.

  Further, the invention according to claim 2 is a frame 8b for connecting a transmission case 22a for shifting the power of the engine 3 provided on the rear side of the machine body and a planting transmission case 22 of the planting part P provided on the front side of the machine body. In a plan view, the front part of the frame 8b is positioned in the center of the front and rear of the body in a side view of the body, and the base of the left and right traveling transmission case 9 is rotatably provided at the front part of the frame 8b. The riding seedling according to claim 1, wherein the left and right traveling transmission cases 9 are provided facing rearward, left and right rear wheels 7 are provided at rear ends thereof, and the left and right rear wheels 7 are disposed below the seat 79 in a side view of the body. A planter was used.

  Therefore, in the riding seedling planting machine according to claim 2, in addition to the operation of the riding seedling planting machine according to claim 1, the frame 8b for connecting the transmission case 8a and the planting transmission case 22 has a U-shape in plan view. Since it forms, it becomes a lightweight, compact and simple machine structure, and the operability and running performance of the machine can be improved, and a good seedling planting operation can be performed. Further, the base of the left and right traveling transmission case 9 is rotatably provided at the front portion of the frame 8b disposed in the front and rear center portion of the body in a side view of the body, and the left and right traveling transmission case 9 is provided facing rearward, Since the left and right rear wheels 7 are provided at the end portions, and the left and right rear wheels 7 are located below the seat 79 in a side view of the fuselage, for example, an appropriate planting depth for the heel U When the left and right rear wheels 7 are moved up and down so that the height of the airframe is controlled, the left and right traveling transmission case 9 is rotated around the center of the front and rear of the airframe as viewed from the side of the airframe. Since the wheel 7 is vertically adjusted, the change in the center of gravity is small and the elevation control can be performed stably, so that seedling planting work can be performed satisfactorily. Further, since the left and right rear wheels 7 are configured to move up and down at a position below the seat 79 in a side view of the fuselage, an operator sitting on the seat 79 is comfortable without being affected by the vertical movement of the left and right rear wheels 7 so much. The seedling planting operation and machine operation can be performed, and the work efficiency is good.

  Further, the invention according to claim 3 is configured such that the vehicle body is supported by the left and right front wheels 6 and the left and right rear wheels 7, and between the front wheels 6 and the rear wheels 7 in a side view of the vehicle body and the seedling planting body 5. The riding seedling planting machine according to claim 1, wherein a pressure reducing wheel 73 is disposed in a lower space portion of the planting transmission case 22 immediately behind.

  Therefore, in the riding seedling planting machine according to claim 3, in addition to the operation of the riding seedling planting machine according to claim 1, the pressure reducing wheel 73 is provided between the front wheel 6 and the rear wheel 7 in a side view of the body and the seedling. Since it is arranged and provided in the lower space part of the planting transmission case 22 immediately behind the planting body 5, the pressure reducing wheel 73 can be arranged by effectively using the lower space part of the planting transmission case 22. The front and rear lengths of the aircraft are shortened to form a lightweight, compact and simple aircraft configuration, which improves the operability and running performance of the aircraft and enables good seedling planting work. Further, since the pressure reducing wheel 73 is disposed immediately behind the seedling planting body 5, the seedling planting body 5 can immediately apply soil covering to the seedling planted on the ridge U, and the seedling planting posture is improved. The planting and growing of seedlings after planting is good.

  Therefore, in the riding seedling planting machine according to the present invention, an operator can sit on the seat 79 facing the front of the machine body to perform the seedling planting work, but the planting unit is kept facing the front of the machine body. Since the work can be performed on P, seedling planting work can be easily performed, and the terminal position of the ridge U can be recognized, so that the work can be performed with peace of mind and the work efficiency is good.

It is a side view of a seedling transplanter. It is a top view explaining the effect | action of a support body. It is a figure which shows a winding sprocket and its periphery (a: top view, b: perspective view). It is a perspective view which shows a seedling planting apparatus. It is a rear view for principal part operation explanation. It is a side view for effect | action description which shows the other example of a seedling planting body.

  A seedling transplanter 1 according to an embodiment of the present invention will be described below. In the following description, the side on which the steering handle 2 is disposed is the rear, and the opposite side, that is, the side on which the seedling planting body 5 is disposed is the front. Then, the right hand side of the worker standing toward the front side of the machine body at the rear part of the machine body is set to the right, and the left hand side is set to the left.

  The seedling planting machine 1 includes a beak-shaped seedling planting body 5 that can be opened and closed and is connected 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. A pair of left and right front wheels 6 that are freely supported and a pair of left and right rear wheels 7 that are driven and rotated by transmission of power from the engine 3 are provided. The front wheel 6 and the rear wheel 7 can be guided in the gutter groove so that the aircraft can travel above the gutter U.

  A mission case 8a is arranged in the front part of the engine 3, and the output shaft of the engine 3 enters the mission case 8a. Engine power is transmitted from the output shaft of the engine 3 to the transmission mechanism in the mission case 8a. It is the composition which becomes.

  Reference numeral 8b denotes a transmission case that also serves as a body frame, and is formed in a U shape with its rear portion opened in a plan view. The transmission case 8a is sandwiched and fixed between the opened left and right rear parts, and the driving force of the engine 3 is transmitted to the front drive shaft 8c of the transmission case 8b through the transmission shaft in one of the left and right sides of the transmission case 8b. The driving force is transmitted to the planting transmission case 22 described later.

  A traveling transmission case 9 is attached to the left and right sides of the front drive shaft 8c of the transmission case 8b so as to be rotatable about the front drive shaft 8c, and the front drive shaft 8c at the center of rotation of the traveling transmission case 9 is attached. The distal end enters the traveling transmission case 9 to transmit traveling power to the transmission mechanism. Then, the driving 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 driving transmission case 9, and the rear wheel 7 is driven to rotate. .

  Accordingly, the front drive shaft 8c is disposed at the front and rear center portion of the airframe in a side view of the airframe, and a base portion of the left and right traveling transmission case 9 is rotatably provided on the front drive shaft 8c. The rear left and right rear wheels 7 are provided rearward, and the left and right rear wheels 7 are positioned below the seat 79 in a side view of the fuselage. Therefore, when the left and right rear wheels 7 are moved up and down to control the height of the aircraft and to control the rolling so that the planting depth is appropriate for the cocoon U, The left and right traveling transmission case 9 is rotated about the center of the front and rear and the left and right rear wheels 7 are adjusted up and down, so that the change in the center of gravity is small and the above-mentioned lifting control and rolling control can be performed stably. Good planting work. Further, since the left and right rear wheels 7 are configured to move up and down at a position below the seat 79 in a side view of the fuselage, an operator sitting on the seat 79 is comfortable without being affected by the vertical movement of the left and right rear wheels 7 so much. The seedling planting operation and machine operation can be performed, and the work efficiency is good.

  A horizontal rolling hydraulic cylinder 11 that can be expanded and contracted is provided on the left side of the machine body, and a balance rod 12 is attached to the rear end of the piston rod of the rolling cylinder 11 so as to be rotatable about a vertical axis. The right side of the connecting portion of the balance rod 12 is connected to the rod.

  When the piston rod 14a protrudes forward of the lifting / lowering hydraulic cylinder 14 provided at the center of the body based on the detection result of the saddle height detection sensor 15 described later, the rod and the left / right horizontal control rolling cylinder 11 also move forward. The arm 16 connected to the rod and the rolling cylinder 11 is rotated forward in the side view of the body, and accordingly, the left and right traveling transmission cases 9 are rotated downward around the rotation center. The left and right rear wheels 7 are lowered and the aircraft is raised. On the contrary, when the piston rod 14a of the lifting hydraulic cylinder 14 is retracted to the rear of the machine body, the left and right arms 16 are rotated backward, and accordingly, the traveling transmission case 9 is rotated upward around the rotation center. The left and right rear wheels 7 are raised and the aircraft is lowered.

  Further, when the left / right horizontal control rolling cylinder 11 is extended and contracted, only the left traveling 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 transmission case 8b that connects the transmission case 8a and the planting transmission case 22 has a structure that also serves as a U-shaped body frame in plan view, so there is no need to provide a special body frame and it is lightweight and compact. The airframe configuration is simple and the operability and running performance of the airframe are improved, so that a good seedling planting operation can be performed. In addition, since the lifting hydraulic cylinder 14 is arranged in a space formed in a U shape in a plan view of the transmission case 8b, the vertical height of the airframe can be lowered, and thus the lifting hydraulic cylinder 14 is located above the lifting hydraulic cylinder 14. Since the height of the step 80 to be arranged can be arranged at a low position, the machine structure is further simplified, and the operator sitting on the seat 79 is also low in the height of the step 80. And the aircraft can be operated.

  Reference numeral 17 denotes a front wheel support frame, which has a base fixed to the left and right below the planting transmission case 22 and extends forward from the planting transmission case 22. The left and right central portions of the front wheel support 17a are fixed to the front wheel support frame 17, and the left and right steering shafts 18 extending in the vertical direction are pivotally supported on the left and right side portions of the front wheel support 17a. The left and right front wheels 6 are rotatably attached to the left and right axles 18a fixed to the side of each lower end of each. A front bumper 17b is integrally formed at the front portion of the front wheel support frame 17.

  Reference numeral 19 denotes a vehicle body direction correction steering mechanism equipped with a left and right rotating roller 19a that rotates in contact with the left and right side surfaces of the kite U. The left and right upper arms 19b are fixed to the upper portions of the left and right steering shafts 18 respectively. The left and right steering shaft 18 is rotated through the left and right upper arms 19b so that the rotating roller 19a always contacts the left and right side surfaces of the kite U to automatically steer the left and right front wheels 6, and the aircraft advances along the kite U. Acts like

  The steering handle 2 is attached to an engine frame 20 whose base is fixed to the transmission case 8a. The steering handle 2 extends upward from the left and right sides of the engine frame 20, and the rear end portions thereof serve as left and right grip portions 2 a of the steering handle 2. The left and right grip portions 2a of the steering handle 2 are set to an appropriate height so that the operator can easily grasp the left and right grip portions 2a with hands. Note that left and right side clutch levers 2b for turning the body by turning off the left and right rear wheels 7 are provided below the left and right grip portions 2a.

  The vertical movement mechanism 4 for operating the seedling planting body 5 is attached to a planting transmission case 22 fixed to the front portion of the transmission case 8b. In the planting transmission case 22, a transmission mechanism for transmitting power for driving the vertical movement mechanism 4 of the seedling planting body 5 transmitted from the transmission case 8b up and down is provided.

  The transmission mechanism in the planting transmission case 22 includes an intermittent drive mechanism for stopping 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 at a position near the vertical movement mechanism, And a clutch mechanism that stops the vertical movement mechanism 4 and the seedling planting body 5 from moving up and down. 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.

  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 stores seedlings as a plurality (32 in total) of seedling containers. The cup 25, a moving mechanism 26 for moving the seedling supply cup 25 so as to pass above the seedling planting body 5, and the bottom portion of the seedling supply cup 25 at the position above the seedling planting body 5 are opened and accommodated inside. An opening mechanism 27 serving as a seedling dropping supply mechanism that drops the seedlings that have been dropped 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 opening 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. As a result, the seedling supply cup 25 supplies the seedlings from the seedling supply cup 25 to the seedling planting body 5 because the distance between the seedling supply cup 25 and the adjacent seedling supply cup 25 does not change regardless of whether the seedling supply cup 25 moves linearly or circularly. Thus, the seedling supply cup 25 is less likely to be displaced with respect to the seedling planting body 5, and the seedling supply is properly performed, so that an accurate seedling can be transplanted.

  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 is rotated in the clockwise direction in plan view of the machine body. From each of the output shafts, each rotary shaft 30 to which the winding sprocket 29 is rotatably attached is attached to a support frame that extends from the planting transmission case 22 to the left and right, and protrudes upward from the upper portion of the planting transmission case 22. The drive sprocket 33, the chain 34, and the driven sprocket 35 are transmitted 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. Then, the seedling supply cup 25 moves to the left in the straight portion 38 on the front side so as to pass above the left and right seedling planting bodies 25, and the seedlings fall into the seedling planting body 5 in the straight portions 38. Left and right drop supply positions 39 and 40 to be supplied are set. The left and right rotating shafts 30 around which the seedling supply cup 25 circulates are disposed on the inner side of the left and right rear wheels 7 and on the front side of the axle 10 position of the rear wheels 7. The seedling planting body 5 is arranged on the front side of the axle 10 position of the rear wheel 7.

  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 of 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. The arcuate long holes 29a, bolts 36, and the like accommodate seedlings that are dropped and supplied 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 drop supply positions 39, 40. This is a turning timing changing mechanism for changing 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 to be reached reaches the drop supply positions 39 and 40.

  A plurality (32 in total) of seedling supply cups 25 is exclusively used for the first seedling supply cup 25b that accommodates seedlings that are supplied at one (right) fall supply position 39, and the other (left) drop supply position 40 is exclusively used. A total of 16 second seedling supply cups 25c for storing seedlings to be supplied in a separate manner, and a configuration in which the first seedling supply cups 25b and the second seedling supply cups 25c are alternately connected to each other. It has become. And when the 1st seedling supply cup 25b is located in one fall supply position 39, it has set so that the 2nd seedling supply cup 25c may be located in the other fall supply position 40. 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. 39 and 40 are configured to reach the same number of times at the same timing. Then, the bottom cover 25a of the first seedling supply cup 25b that accommodates the seedling that is supplied to the right seedling planting body 5 is provided with a protrusion 41 at the left end (the outer end of the rotation) with respect to the rotation direction. . On the other hand, the bottom lid 25a of the second seedling supply cup 25c that accommodates the seedlings to be dropped and supplied to the left seedling planting body 5 is provided with a protrusion 41 at the right end (inner end of rotation) with respect to the rotation direction. .

  The opening 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. The support 42 is a seedling planting body. 5 so that the bottom cover 25a is supported by the support 42 when the seedling supply cup 25 passes through the upper position (the drop supply positions 39, 40) of the seedling planting body 5. Is released and rotated downward by its own weight and the gravity of the seedling, and the lower part of the seedling supply cup 25 is opened so as 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 supports 42a, 42b, 42c, and 42d include a main fixed support 42a that covers the entire area of the left and right arc-shaped portions 37 and the rear linear portion 38 in the circulation locus of the seedling supply cup 25, and the front 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 42b closes and supports only the bottom cover 25a of the first seedling supply cup 25b from the middle of the front linear portion 38 in the circumference of the seedling supply cup 25, and supports the bottom cover 25a. In order to take over the support to the succeeding main fixed support body 42a, it is provided at a position on the left side of the linear portion 38 on the front side and on the upper side of the bottom cover around the main fixed support body 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 at a position on the right side of the linear portion 38 on the front side and on the lower side of the bottom cover around the main fixed support 42a. The third sub-fixing support 42d is configured to abut on the center of the bottom cover 25a, and the bottom cover 25a of the first seedling supply cup 25b is moved from the middle of the front linear portion 38 around the seedling supply cup 25. It has an inclined portion that is lower on the upper side of the circumference to be closed, and is configured to close while guiding the bottom lid 25a of the first seedling supply cup 25b opened at the inclined portion upward, and the linear portion 38 on the front side. Is provided in parallel with the start end (right end) of the first sub-fixing support 42b around the bottom lid. Note that the end (left end) of the third sub-fixing support 42d in the bottom lid circulation is positioned closer to the upper side (right side) in the bottom lid rotation than the end (left end) of the second sub-fixing support 42c in the bottom lid rotation. is doing. In addition, the start end part in the bottom cover circulation of the main fixed support 42a is provided with an inclined part that is lower on the upper side of the circulation so as to close the bottom cover 25a of the second seedling supply cup 25c, and is opened at the inclined part. The bottom lid 25a of the seedling supply cup 25c is closed while being guided upward.

  The first sub-fixing support 42b is fixedly provided on a first support member 43 whose left end extends from the support frame 31 to the left end of the linear portion 38 on the front side. The second sub-fixing support 42c is fixed to the second support member 44 extending from the support frame 31 to the right end of the front linear portion 38, and the left end extends forward from the planting transmission case 22. The third support member 45 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 moving support bodies 42e and 42f are composed of a first moving support body 42e and a second moving support body 42f provided on a part of the linear portion 38 on the front 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 lid 25a of the 25b, it is provided on the right side of the linear portion 38 on the front side and on the lower side of the bottom lid around the main fixed support 42a. The first moving support body 42e is laterally moved to the second support member 44 via a disc spring 47 'by means of a mounting bolt 47 provided through the elongated hole 46 provided in the left-right direction provided in the second support member 44. The position in the left-right direction can be changed by the long hole 46, and the position is fixed by the elastic force of the disc spring 47 ′. The mounting bolt 47 is located outside (in front of) the surrounding area of the seedling supply cup 25 and is provided at a position where the seedling supply cup 25 does not get 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 left side of the front linear portion 38 and the upper end of the main lid 42a around the bottom lid so as to support the bottom lid 25a of the supply cup 25c (on the left arc-shaped portion 37 of the circular locus) It is provided at a distance from the starting end). The second moving support member 42f is moved in the left-right direction via the disc spring 49 'to the third support member 42d by a mounting bolt 49 penetrating the elongated hole 48 provided in the left-right direction provided in the second moving support member 42f. It is mounted freely, and the position in the left-right direction can be changed by the long hole 48, and is fixed at the position by the elastic force of the disc spring 49 ′. The second moving support 42f has a U-shape in plan view that is divided into two parts: a position adjusting portion provided with a long hole 48 and a bottom lid supporting portion that supports the bottom lid 25a. The second sub-fixing support 42c is disposed between the position adjusting portion and the bottom lid support portion, and the bottom lid 25a can be reliably supported by taking over the second sub-fixing support 42c. . Further, when the position of the second moving support 42f is set to the position on the uppermost side of the bottom cover circulation (right end position) by the long hole 48, the bottom cover support part is connected to the second sub fixed support 42c and the third sub support support 42c. The second movable support 42f and the second and third sub-fixed supports 42c and 42d are compactly arranged. The mounting bolt 49 is located on the inner side (rear side) of the surrounding area of the seedling supply cup 25 and is provided at a position where the seedling supply cup 25 does not get in the way.

  Further, the left end portions of the first moving support 42e and the second moving support 42f (release the support of the protrusion 41 of the bottom cover 25a from below by the first moving support 42e or the second moving support 42f, If a seedling guide for properly supplying seedlings into the seedling planting body 5 is provided at the bottom lid 25a of the seedling supply cup 25b and the seedlings are supplied into the seedling planting body 5 The seedlings in the seedling supply cup 25 are appropriately supplied into the seedling planting body 5 at the supply positions 39 and 40, so that a seedling supply mistake from the seedling supply cup 25 to the seedling planting body 5 is prevented, and a lack of stock is prevented. At the same time, the inner seedling planting body 5 can plant seedlings in an appropriate posture, and the planting posture of the seedlings is improved.

  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, when the first seedling supply cup 25b moves to a position where the bottom cover 25a of the first seedling supply cup 25b is not supported at the end (left end) on the lower side of the bottom cover around the first moving support 42e. The bottom lid 25a of the first seedling supply cup 25b is opened. That is, the end (left end) of the first moving support 42e on the lower side around the bottom lid is the first (right) drop supply position 39. Further, when the second seedling supply cup 25c moves to a position where the bottom cover 25a of the second seedling supply cup 25c is not supported at the end (left end) on the lower side of the bottom cover around the second moving support 42f. The bottom lid 25a of the second seedling supply cup 25c is opened. That is, the end (left end) of the second moving support 42f on the lower side around the bottom lid is the second (left) 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 circuit.

  Therefore, when the first moving support 42e is positioned on the most peripheral lower side (left side) by the long hole 46, and the second moving support 42f is positioned on the most peripheral upper side (right 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. Conversely, when the first moving support 42e is positioned on the most circumferential upper side (right side) by the long hole 46, and the second moving support 42f is positioned on the most lower rotating side (left 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).

  The seedling planting device 23 moves up and down between 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 farm scene and a position below the farm scene. A vertical movement mechanism 4 for moving the seedling planting body 5 up and down, a closed state in which the lower end portion of the beak-shaped seedling planting body 5 is closed and a seedling is received from above and a seedling can be accommodated inside, and the lower end of the seedling planting body 5 An opening / closing mechanism 50 for opening and closing the seedling planting body 5 is provided in an open state in which the part opens left and right and the seedling accommodated inside can be released downward.

  This seedling planting machine 1 has a configuration of a plurality of row plantings 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 integrally to the vertical movement mechanism 4 provided on the left and right side portions of the planting transmission case 22. A beak-shaped seedling planting body 5 whose tip is directed downward is composed of a right seedling planting body 5L and a right seedling planting body 5R and divided into right and left parts, and the right seedling planting body 5L and the right seedling planting planted by an opening / closing mechanism 50 described later. The body 5R rotates in the left-right direction to open the lower end. In addition, the right and left seedling planting bodies 5 are configured to vertically move and open and close synchronously by the vertical movement mechanism 4 and the opening / 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 seedling supplied from the seedling feeding device 24 into the seedling planting body 5. The seedling planting body 5 can be accurately supplied.

  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 lift links 52 and 53 are attached to the shaft projecting to the left and right sides of the planting transmission case 22 so that the rear part can be turned up and down and the front part is connected to the seedling planting body 5. , 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, a rotation outer peripheral side end portion of the drive arm 55, and the aforementioned An interlocking arm 56 is rotatably connected to the upper lifting link 52. And each front end part (rotating front-end | tip part) of the raising / lowering links 52 and 53 of the upper side and the lower side is rotatably attached to the connection member 57, and is connected. 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 move up and down, and the left and right seedling planting bodies 5 move 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 descending 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 fulcrum shaft 58 moves up and down during the up-and-down movement of the upper elevating link 52, the seedling planting body 5 is tilted back and forth during the up-and-down movement, and the seedling planting body 5 is looped in a side view. It is configured to move up and down along the 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 5L, and the left opening / closing arm part provided at the upper part of the left seedling planting body 5R. An end of the outer cable 61b of the opening / closing cable 61 is connected to the distal end of 62, and an operating arm 64 rotatably attached to a rotation fulcrum shaft 63 pivotally attached to the base of the lower lift link 53 is provided. The other end of the inner wire 61a of the opening / closing cable 61 is connected to the distal end of the operating arm 64, and the other end of the outer cable 61b of the opening / closing cable 61 is fixedly attached to the machine body side. FIG. 4 shows the right seedling planting device 23, and the left seedling planting device 23 is symmetrical with the right seedling planting device 23, so that the front end portion of the right opening / closing arm portion is shown. The end portion of the outer cable of the opening / closing cable is connected to the end portion of the opening / closing cable, and the end portion of the inner wire of the opening / closing cable is connected to the tip portion of the left opening / closing arm portion. Then, the operating arm 64 is set under the action of a cam attached so as to rotate integrally with the planting output shaft 50 that rotates and moves the rotation fulcrum shaft 58 pivotally attached to the base of the upper lifting link 52. It is configured to rotate to the rear side at the timing. As a result, when the seedling planting body 5 moves up and down by the drive rotation of the drive shaft 54 and reaches the lower end position, the operating arm 64 is rotated to the rear side due to the change of the operation position of the cam, and the outer cable 61 is opened. The inner wire 61a is pulled to the left side with respect to the cable 61b, and the right opening / closing arm portion 60 and the left opening / closing arm portion 62 rotate so as to approach each other, and the left seedling planting body 5R rotates to the left, In conjunction with this, the right seedling planting body 5L rotates to the right, the lower side of the seedling planting body 5 opens to the left and right, and opens downward. Then, the seedling planting body 5 is raised and the operating arm 64 is rotated to the original position (front side) with respect to the seedling planting body 5 due to the change of the cam action position, and the inner wire 61a of the opening / closing cable 61 is loosened. The lower part of the seedling planting body 5 opened to the left and right is closed. Thus, since the seedling planting body 5 is configured to be opened and closed by the opening / closing cable 61, the opening / closing cable 61 has a higher degree of freedom of connection than the conventional opening / closing mechanism using a rod or link, and therefore operates forward and backward. The actuating arm 64 can rotate the left seedling planting body 5L and the right seedling planting body 5R in different directions (left and right directions), and a desired opening / closing amount of the seedling planting body 5 with a small amount of actuation of the actuation arm 64 Can be obtained. Note that the left seedling planting body 5 </ b> L and the right seedling planting body 5 </ b> R are urged to rotate by the spring 65 toward the side where the lower portion of the seedling planting body 5 is closed.

  Respective rotation front end portions (front 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 has a triangular plate 68 on the left and right sides, and the left and right plates 68 sandwich the tips of the upper and lower elevating links 52 and 53, with the left and right plates at the front. 68 is provided in the horizontal direction. In addition, 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 front side from 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 are not obstructed 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 of the 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. Accordingly, the position adjusting shaft 70 is inserted into the boss 69, 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. The left and right positions of the body 5 can be changed.

  The change in the left and right position of the seedling planting body 5 is equivalent to 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 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) of the arrangement pitch in the first and second seedling supply cups 25b, 25c, and the boss 69, the position adjusting shaft 70, etc. The planting position change mechanism which can move the seedling planting body 5 is comprised. The position adjusting shaft 70 can be fixed so as not to move left and right with respect to the boss 69 by a set bolt 71 provided on the boss 69. When the position adjusting shaft 70 is moved left and right, the set bolt 71 is loosened and moved. Yes. The set bolt 71 is provided on the front side of the boss 69 and the position adjusting shaft 70, and can be easily tightened or loosened from the front side without the lifting links 52 and 53 being in the way. In addition, the opposing vertex of the hexagonal shape (polygonal shape) of the cross section of the position adjusting shaft 70 is positioned vertically, and the section coefficient for bending in the vertical direction is improved. The strength required to support the cantilever 5 can be obtained. Further, three grooves 72 serving as a guide for the left and right positions of the seedling planting body 5 are provided on the outer periphery of the position adjusting shaft 70 at an appropriate position, and the groove 72 is aligned with the end of the boss 69 so that the normal gap (320 mm) is obtained. It is configured so that it can be adjusted to the left and right positions of the seedling planting body 5 between the narrow planting strip (300 mm) and the wide planting strip (350 mm), and the position of the seedling planting body 5 can be easily changed. .

  And the base part of the linkage rod 90 extended toward the left direction is weld-fixed to the seedling guide 51 of each seedling planting body 5, and the front-end | tip part of this linkage rod 90 has extended linkage part 90 'extended upwards. Is formed.

  On the other hand, below the first moving support body 42e and the second moving support body 42f, an engaging groove portion 91 that engages with the link portion 90 ′ of the link rod 90 is integrally formed. When the position reaches the highest position, the link portions 90 ′ of the link rod 90 of each seedling planting body 5 are engaged with the engagement groove portions 91 of the first moving support body 42e and the second moving support body 42f, respectively. ing. The linkage mechanism A is constituted by the linkage portion 90 ′ of the linkage rod 90 provided on the seedling guide 51 of the planted body 5 and the engagement groove portion 91 of the first movement support 42 e and the second movement support 42 f.

  Therefore, when each seedling planting body 5 comes to the highest position, the linkage portion 90 ′ of the linkage rod 90 of each seedling planting body 5 is engaged with the engaging groove 91 of the first moving support 42e and the second moving support 42f, respectively. Therefore, when each seedling planting body 5 is adjusted to the left and right positions along the position adjustment shaft 70 and each striation is adjusted when each seedling planting body 5 is at the highest position, the left and right positions of each seedling planting body 5 are adjusted. Simultaneously with the adjustment, the first movement support is automatically performed by the engagement of the linkage portion 90 ′ of the linkage rod 90 of each seedling planting body 5 with the engagement groove portion 91 of the first movement support 42e and the second movement support 42f. The left and right positions of the seedling planting bodies 5 and the drop supply positions 39 and 40 can be changed at the same time by adjusting the left and right positions of the body 42e and the second moving support 42f. Therefore, the operation | work which adjusts a streak is simplified and work efficiency is good.

  In addition, the frame portion of the seedling supply device 24 is connected to the planting transmission case 22 by the frame 92 so that the support of the seedling supply device 24 is appropriate and the seedling supply to each seedling planting body 5 of the seedling supply device 24 is accurately performed. It has a configuration that can be performed. Therefore, seedling supply to the respective seedling planting bodies 5 of the seedling supply device 24 can be performed accurately and seedling planting work can be performed properly.

  Then, while the vertical movement of the seedling planting body 5 is performed for one cycle by the vertical movement mechanism 4, the first and second seedling supply cups 25 b and 25 c are arranged for each arrangement pitch (2 of the seedling supply cup 25 in a row). Pieces: Since the distance between the centers of the adjacent cups 25 is 80 mm, it moves around 160 mm). And, for example, in the normal streak (320 mm), the timing at which the bottom cover 25a of the seedling supply cup 25 opens at the drop supply positions 39 and 40 is when the seedling planting body 5 rises up to the position immediately below the seedling supply cup 25. (When the interval is 320 mm, since the vertical movement of the left and right seedling planting body 5 is a multiple of the moving pitch 160 mm of each seedling supply cup 25b, 25c during one cycle operation, the drop supply position is always The timing at which the bottom cover 25a of the seedling supply cup 25 is opened at 39, 40 can be set when the seedling planting body 5 has been raised to the level immediately below the seedling supply cup 25.) At this time, the first moving support body 42e that determines the first drop supply position 39 on the right side is set at a position that is aligned with the left end of the second support member 44 at a position marked with a spacing of 320 mm. The second moving support 42f that determines the drop supply position 40 of the line is set at a position that is aligned with the left end portion of the third support member 42d at a position marked as 320 mm between the lines. Thereby, the seedling supply cup 25 can supply the seedlings simultaneously without passing the seedling supply leakage to the two seedling planting bodies 5 while passing through the upper part of the two seedling planting bodies 5 in series. It will be possible to supply seedlings to the two seedling planting bodies 5 without leaving a seedling supply cup 25 that has not been supplied with seedlings after passing over the planting body 5, and the seedling supply operation can be performed with a margin, In addition, seedlings can be reliably supplied to the two seedling planting bodies 5.

  Even if the spacing between the planting lines is changed, the seedlings can be properly supplied to the seedling planting body 5 and the planting accuracy of the seedlings can be maintained. Further, the spacing between the planting strips can be easily changed by moving the seedling planting body 5 in the left-right direction and changing the drop supply positions 39 and 40. In particular, even if the spacing between the planting strips is changed, the left and right drop supply positions 39 and 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 timing can be changed. The rotation position (phase) of the seedling container 25 by the mechanism can be changed without changing the rotation of the chain 34 and the seedling supply cup 25 with a simple configuration of changing the rotational phase of the winding sprocket 29 relative to the driven sprocket 35. It becomes easy to change between clauses. Note that the position of the seedling planting body 5 can be easily changed because only the movable part of the position adjusting shaft 70 is slid.

  In addition, as shown in FIG. 6, the shape of the seedling guide 51 of the seedling planting body 5 may be a shape that protrudes greatly to one side in the front-rear direction of the seedling planting body 5. That is, when the seedling planting body 5 has reached the highest position and the timing for opening the bottom cover 25a of the seedling supply cup 25 cannot be set, for example, When it is time to open the bottom lid 25a, if the seedling guide 51 has a shape that protrudes greatly in the rearward direction of the seedling planting body 5, seedlings are properly supplied from the seedling supply cup 25 into the seedling planting body 5. It is possible to perform transplanting work of appropriate seedlings. On the contrary, when the seedling planting body 5 is at the timing when the bottom lid 25a of the seedling supply cup 25 is opened during the descending process of the trajectory T, the shape of the seedling guide 51 projecting greatly in the forward direction of the seedling planting body 5 If so, seedlings can be properly supplied from the seedling supply cup 25 into the seedling planting body 5, and an appropriate seedling transplanting operation can be performed.

The planting part P is configured by the planting transmission case 22, the seedling planting device 23, the seedling supply device 24, and the like.
Further, as shown in the drawing, the left and right suppression wheels 73 for suppressing the soil around the seedling while covering the periphery of the planted seedling are respectively provided on the immediately rear side of the left and right seedling planting bodies 5, The roots of the seedlings that have been planted on the top are pressed down from the left and right sides to promote rooting. The left and right pressure reducing wheels 73 are configured to be pivoted at the lower portion of a lot 74b that is inserted vertically into a lock shaft 74a that is provided laterally at the distal end portion of the support 22a whose base is fixed to the planting transmission case 22. The lock shaft 74a vertically penetrates the two lots 74b having the pressure-reducing wheel 73 in the lower part. It can be switched to a state of being fixed at the position.

  That is, in the state of the solid line in FIG. 1, the left and right lots 74b can freely move up and down in the through hole of the lock shaft 74a, so that the left and right pressure reducing wheels 73 move freely up and down. The left and right lots 74b are provided with kerfs (parts having a reduced shaft diameter) 74c in the middle thereof, and a grip 74d at the upper end of the left and right lots 74b. Therefore, when the operator grasps the grip portion 74d and pulls the lot 74b upward, the lot 74b moves upward in the through hole of the lock shaft 74a, and the pressure reducing wheel 73 moves upward to the storage position. At that time, the lot 74b is hooked on the upper end portion of the through hole of the lock shaft 74a by hooking the groove 74c of the lot 74b, so that the lot 74b is locked at the upper position and fixed so as not to fall downward. It can be stored upwards when turning. When turning the aircraft, the operator raises both the left and right lots 74b upward and stores the left and right pressure-reducing wheels 73 upward, and then turns the vehicle so that the left and right front wheels 6 float from the field scene by lowering the rear of the aircraft. Can be turned easily. Further, if an operation member for pulling up both the left and right lots 74b is provided, and the left and right pressure-reducing wheels 73 can be accommodated upward together by the operation member, the workability during turning is further improved.

  The pressure-reducing wheel 73 is disposed between the front wheel 6 and the rear wheel 7 in a side view of the body and disposed in the lower space of the planting transmission case 22 immediately behind the seedling planting body 5. The pressure-reducing wheel 73 can be arranged by effectively using the lower space of the transmission case 22, and the front-and-rear length of the fuselage is shortened to form a lightweight, compact and simple fuselage structure, improving the operability and running performance of the fuselage. Thus, good seedling planting work can be performed. Further, since the pressure reducing wheel 73 is disposed immediately behind the seedling planting body 5, the seedling planting body 5 can immediately apply soil covering to the seedling planted on the ridge U, and the seedling planting posture is improved. The planting and growing of seedlings after planting is good.

  Further, a forward seat 79 facing the seedling supply device 24 is provided above the bonnet 78, and a flat step 80 is provided for placing a foot between the seedling supply device 24. The seat 79 is supported by the airframe via a support frame 81 whose base is fixed to a transmission case 8b that also serves as the airframe. The support frame 81 extends upward through one of the left and right sides (left side) of the bonnet 78.

  In step 80, the left and right rear wheels 7, the seedling planting device 23 and the seedling supply device 24 are switched on and off, and the main clutch pedal 84 for riding, and the left and right rear wheels 7 can be disconnected from each other. A clutch pedal 85 is provided so that an operator in the seat 79 can stop the aircraft and correct the traveling direction of the aircraft.

  A stereo camera 86 is provided at an upper portion of the front wheel support frame 17 at the center of the left and right sides of the body so that the stereo camera 86 can be freely changed in the left and right directions of the body by driving an electric motor 96. That is, when the lifting hydraulic cylinder 14 is operated by the planting operation lever 88 to manually lift and lower the aircraft, and the right side clutch lever 2b is operated to turn the aircraft to the right, the electric motor 96 operates to turn the stereo camera 86 to the right of the aircraft, and when the left side clutch lever 2b is operated to turn the aircraft to the left, the electric motor 96 operates to move the stereo camera 86 to the left of the aircraft. To face.

  Specifically, a lift sensor that detects that the planting operation lever 88 has been operated to a position in which the lifting and lowering hydraulic cylinder 14 is manually operated to manually raise and lower the machine body and a turn that detects that the left and right side clutch levers 2b have been operated are detected. When the lift sensor detects that the planting operation lever 88 has been operated to the position where the airframe is moved up and down and the turning sensor detects that the right side clutch lever 2b has been operated, the electric motor 96 is controlled by the control mechanism. Is operated so that the stereo camera 86 faces the right side of the aircraft. Then, the stereo camera 86 can recognize the seedling (planting seedling of the previous process) that has been planted in the ridge U by the seedling planting operation before turning the aircraft to the right. Further, when the lift sensor detects that the planting operation lever 88 has been operated to the position where the machine body is raised and lowered, and the turn sensor detects that the left side clutch lever 2b has been operated, the electric motor 96 is operated by the control mechanism. The stereo camera 86 is turned to the left side of the machine. Then, the stereo camera 86 can recognize the seedling (planting seedling of the previous process) that has been planted in the ridge U by the seedling planting operation before the aircraft turns left.

  In this way, if the stereo camera 86 recognizes the seedling planted in the previous process and controls the left and right side clutches so that the aircraft advances along the seedling row or automatically controls the left and right front wheels 6 steering, Proceeding along the seedling rows planted in the previous process, it is possible to plant seedlings neatly. In the case of performing the steering automatic control by performing both the left and right side clutch control and the left and right front wheel 6 automatic steering, first, the left and right front wheels 6 are automatically steered to correct the traveling direction of the aircraft, and the left and right front wheels 6 If it is not possible to properly correct the aircraft's direction of travel by automatic steering, if the left and right side clutches are controlled and the aircraft's direction of travel correction is controlled, the abrupt advance direction correction will not be performed first. Advancing direction correction control is possible.

  When the stereo camera 86 recognizes the end of the heel U, 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 worker. This makes it difficult for the operator sitting on the seat 79 to focus on the seedling supply work and to confirm the front of the aircraft, not to notice that the aircraft has reached the end of the heel, and to collide with surrounding structures. Although there is a risk of accidents occurring, the aircraft will automatically stop at the end of the dredger, and an alarm will notify you that the end of the dredge has been reached. The seedling supply work to the seedling supply device 24 can be concentrated without worrying about the position, and the planting work efficiency is improved. It should be noted that it is safer to slow down the traveling speed of the aircraft by automatically operating the accelerator of the engine before stopping the aircraft.

  The stereo camera 86 is disposed behind the front bumper 17 b of the front wheel support frame 17, and the front bumper 17 b functions to protect both the body and the stereo camera 86. Further, when a monitor is provided on the seat 79 side of the seedling supply device 24 so that an operator who is seated on the seat 79 and supplies the seedling supply device 24 with the seedling supply device 24 can see the image of the stereo camera 86 on the monitor, It is safer to recognize the end of the heel U during the supply work.

  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, a seedling planting device 28 and a seedling feeding device 32. And a planting operation lever 88 for manually turning on and off only the drive. Further, the planting operation lever 88 can be used to operate the lifting hydraulic cylinder 14 to manually lift and lower the machine body.

  On the left and right sides of the seat 79, a seedling mounting base 89a on which a seedling container (a seedling box, a seedling tray, a seedling container or the like) is placed is disposed. The seedling mounting base 89a is provided in three stages on the left and right on the left and right seedling mounting support frames 89b whose bases are fixed to a transmission case 8b that also serves as a machine frame. The left and right seedling stage support frames 89b and the seedling stage 89a are arranged on the left and right sides of the seat 79, and are configured to also serve as a safety frame that protects an operator seated on the seat 79 when the aircraft falls. . The worker sitting on the seat 79 takes out a seedling container such as a seedling tray placed on the seedling mounting platform 89a, and the front is provided at the upper portion of the seedling supply device 24, and the rear is lowered. The seedlings are placed on the mounting table 93 inclined to each other, and the seedlings are taken out one by one from the seedling container mounted on the mounting table 93 and supplied to the seedling container 25 of the seedling supply device 24 to perform seedling planting work.

  93 is a left and right rear pressure reducing wheel that compresses the soil around the seedling while covering the surrounding area of the planted seedling. The base is fixed to the engine frame 20 and vertically extended to the rear frame 94 extending toward the rear of the aircraft. A shaft 95 is provided so that the vertical position can be adjusted, and is provided rotatably below the vertical axis 95. Therefore, the vertical position of the rear pressure wheel 93 can be adjusted in accordance with the vertical position adjustment of the pressure wheel 73. The rear pressure wheel 93 is used to further suppress the soil covering with the pressure wheel 73 provided immediately behind the left and right seedling planting bodies 5 and suppresses the soil again. Therefore, the planting posture of the seedling is improved, and the survival and growth of the seedling after planting are improved. Further, since the pair of left and right rear wheel 93 is provided at the rear part of the airframe, it has a function as an airframe fall prevention wheel and can prevent the airframe from toppling when the airframe is tilted left and right.

  In particular, the engine 3 and the transmission case 8a are arranged on the rear side of the aircraft equipped with the left and right front wheels 6 and the left and right rear wheels 7, and the planting transmission case 22, the seedling planting device 23 and the seedling supply are arranged on the front side of the aircraft. Since the planting part P constituted by the device 24 is arranged and a seat 79 is arranged on the rear side of the body of the seedling supply device 24 and the operator is seated facing the front of the body, the worker is seated on the seat 79. It is possible to perform the seedling supply work to the seedling supply device 24 by sitting facing the front of the machine body, and the seedling planting work can be easily performed. Can be recognized and work with confidence, and work efficiency is good.

  In addition, 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 by the rotation timing change mechanism is the position change amount of the fall supply position with the smallest position change in the circulation path of the seedling container among the plurality of drop supply positions. It is good to match.

  Moreover, although the above demonstrated the structure planted in a row, it may be applied to the structure which staggers planting, such as the structure which varied the operation timing of the right and left seedling planting body, for example. In addition, when the operation timings of the right and left seedling planting bodies are made different, the first and second seedling containers are configured to reach the same number of times at different timings at the respective drop supply positions by the circular movement by the moving mechanism.

3 Engine 5 Seedling planting body 6 Left and right front wheels 7 Left and right rear wheels 8a Transmission case 8b Frame 9 Left and right traveling transmission case 22 Planting transmission case 24 Seedling supply device 73 Pressure reducing wheel 79 Seat P Planting part

Claims (3)

  A seat where the engine (3) is arranged on the rear side of the fuselage, a planting part (P) is arranged on the front side of the fuselage, and an operator is seated facing the front of the fuselage behind the planting part (P) Riding seedling planting machine characterized by arranging (79).   A frame (8b) that connects a transmission case (8a) for shifting the power of the engine (3) provided on the rear side of the machine body and a planting transmission case (22) of a planting part (P) provided on the front side of the machine body. In a plan view, and the front part of the frame (8b) is positioned in the front-rear center of the body in a side view of the body, and the base of the left and right traveling case (9) is located at the front part of the frame (8b). And the left and right rear wheels (7) are provided at the rear ends thereof, and the left and right rear wheels (7) are seated in a side view of the fuselage. 79) The riding seedling planting machine according to claim 1, wherein the seedling planting machine is disposed below 79).   The left and right front wheels (6) and the left and right rear wheels (7) are configured to travel while supporting the aircraft, and when viewed from the side of the aircraft, between the front wheels (6) and the rear wheels (7) and the seedling planting body (5) The riding seedling planting machine according to claim 1, wherein a pressure-reducing wheel (73) is arranged in a lower space of the planting transmission case (22) immediately behind.

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