JP2012157326A - Transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transplanter that can easily perform the turning work of a machine body in a good efficiently, improve its working performance and workability and perform good seedling-transplanting work, since in conventional transplanters, there are problems in workability such that when the machine body is turned by descending right and left driving rear wheels to elevate the machine body, it is difficult for an operator to push a steering handle down in the lower direction for elevating the front part of the machine body, because the right and left driving wheels are each at the lower directional position of the steering handle to require much labor for the turning work.SOLUTION: This transplanter mounting a seedling-transplanting part I at the front part of the machine body installed with traveling devices 7, 6 at the front side and rear side respectively by a machine body side view, and installing the steering handle 2 at the rear part of the machine body is provided by at least setting the front side traveling device as the driving for traveling device 7, and constituting the rear side traveling device 6 as can freely switching as a traveling state of contacting with ground and a housed state of housing the same in the upper direction.

Description

  The present invention relates to a transplanter for transplanting seedlings in a field with a seedling planting body.

  There is a transplanter in which a steering handle is provided on the rear side of the aircraft that travels by the left and right front wheels and the left and right drive rear wheels, and seedlings are transplanted in a field by a seedling transplant body of a seedling transplanting portion provided on the front side of the aircraft.

JP 2009-195176 A

  Since the above-mentioned background art has a structure in which a seedling transplanting part is provided on the front side of the airframe, and a steering handle is provided on the rear side of the airframe that travels by free-rotating left and right front wheels and left and right driving rear wheels. When the left and right drive rear wheels are lowered on the field to raise the aircraft and turn the aircraft, the operator has the left and right drive rear wheels at the lower position of the steering handle. It was difficult to raise the part, and a great deal of labor was required for the turning work, and there was a problem in workability.

  Then, this invention makes it a subject to provide the transplant machine which can perform a body turning operation | work efficiently and easily, improves work performance and workability | operativity, and can perform a favorable seedling transplant operation | work.

In order to solve the above problems, the present invention has taken the following technical means.
The invention according to claim 1 is a transplantation in which the seedling transplanting part I is mounted on the front part of the machine body provided with the traveling devices 7 and 6 on the front side and the rear side, respectively, and the steering handle 2 is mounted on the rear part of the machine body. In this machine, at least the front traveling device is the driving traveling device 7, and the rear traveling device 6 is configured to be switchable between the ground traveling state and the stowed state accommodated upward.

  Therefore, in the invention according to claim 1, the seedling transplanting part I is mounted on the front part of the machine body provided with the traveling devices 7 and 6 on the front side and the rear side, respectively, and the steering handle 2 is mounted on the rear part of the machine body. In the transplanted machine, at least the front traveling device is the driving traveling device 7, and the rear traveling device 6 is switchable between the ground traveling state and the stowed state accommodated upward, so that the straightness of the aircraft is good. The aircraft can travel well along U and perform proper seedling transplanting work. Further, when the aircraft is turning, if the rear traveling device 6 is switched to the upper storage state and the steering handle 2 at the rear of the aircraft is pushed down, the aircraft can be easily inclined around the front driving traveling device 7. The seedling transplanting part I attached to the front part can be moved up high, and the body can be easily turned and the workability is good.

  In the invention according to claim 2, the seedling transplanting device I moves up and down the seedling transplanting device 23 by moving the seedling transplanting portion I up and down to transplant the seedling in the field. It comprises a seedling supply device 24 equipped with a plurality of seedling containers 25 to be supplied, and a seat 79 on which an operator sits on the body toward the seedling supply device 24 is provided at a rear position of the seedling supply device 24. The transplanter described in 1 was used.

  Therefore, in the invention described in claim 2, in addition to the operation of the invention described in claim 1, the worker seated on the seat 79 at the time of seedling transplanting work accommodates each seedling of the seedling supply device 24 facing the forward direction of the body. The operation of supplying the seedlings to the body 25 can be performed easily and with good workability, and the seedling transplanting device 23 and the seedling supplying device 24 of the seedling transplanting part I can be recognized correctly and properly. Moreover, seedling transplanting work can be performed with good workability.

The invention according to claim 3 is the transplanter according to claim 2 in which the seedling supply device 24 is disposed so as to be inclined so that the front side is low and the rear side is high in a side view of the machine body.
Therefore, in addition to the operation of the invention described in claim 2, the invention described in claim 3 is a transplanting operation in which an operator sits on the seat 79 and supplies seedlings to each seedling container 25 of the seedling supply device 24. Sometimes, the operator can see the state of the seedling planted by the seedling planting device 23 in the field through the lower side of the inclined seedling feeding device 24, and check whether the seedling transplanting operation is properly performed. Therefore, a good and appropriate seedling transplanting operation can be performed.

  Moreover, since each seedling container 25 rotates around in a state of being tilted forward, the seedlings stored in each seedling container 25 are in a fixed position on the front side of the tilted seedling container 25, and the seedlings are It is supplied to the seedling planting device 23 in the same stable state, and the seedling planting device 23 can plant seedlings in a field with a good posture.

The invention according to claim 4 is the transplanter according to claim 3 in which the seedling planting device 23 is arranged below the front part of the seedling supply device 24.
Accordingly, in the invention described in claim 4, in addition to the action of the invention described in claim 3, the seedling planting device 23 is disposed below the front part of the seedling supply device 24. The seedling planting device 23 is supplied with seedlings, and the seedling planting device 23 can be arranged at a low position of the machine body close to the field, and the vertical operation stroke of the seedling planting device 23 is shortened. Therefore, the airframe can be made compact and compact.

  In the invention according to claim 5, a notch hole 25d is formed in the upper opening of each seedling container 25, and the notch hole 25d is directed outward while the seedling container 25 rotates. The transplanter according to any one of claims 2 to 4 is provided.

  Accordingly, in the invention described in claim 5, in addition to the operation of the invention described in any one of claims 2 to 4, an operator seated on the seat 79 can receive each seedling container 25 of the seedling supply device 24. When seedlings are supplied to the plants, the notches 25d of the seedling containers 25 face the worker, so that the workers can easily supply seedlings with good workability and work efficiency. Further, since the seedlings accommodated in each seedling container 25 can be seen well from the cutout holes 25d, the operator can immediately know the seedling container 25 for which seedlings are forgotten to be put in, and the stock removal due to a seedling supply error has occurred in advance. Therefore, a good seedling transplanting operation can be performed. In addition, when the auxiliary worker is near the machine body, the auxiliary worker also sees the seedlings contained in each seedling container 25 from the cutout holes 25d, so the worker forgets to put the seedlings. The seedling container 25 can be immediately identified, and the missing stock can be prevented, so that a good seedling transplanting operation can be performed.

  According to the sixth aspect of the present invention, the front drive travel device is a crawler travel device 7 including a drive wheel 7d, a front roller 7b, and a crawler 7e wound around the rear wheel 7c, and the crawler travel device 7 is an actuator. 14. The transplanter according to claim 1, wherein the transplanter is configured to move up and down in parallel or substantially in parallel.

  Therefore, in the invention described in claim 6, in addition to the operation of the invention described in any one of claims 1 to 5, the crawler traveling device 7 is vertically moved by the actuator 14 in parallel or substantially in parallel. As a result, the front and back length of the ground contact surface of the left and right crawler traveling device 7 is raised or lowered in a state where it does not fluctuate or does not fluctuate so much that it always exhibits an appropriate running performance regardless of the height of the heel U and is a good seedling. Can be transplanted.

  Further, when the crawler traveling device 7 is lowered to raise the airframe to turn the airframe, the operator pushes down the steering handle 2. Then, only the crawler 7e of the rear wheel 7c, which is the rear end portion of the ground contact surface of the crawler traveling device 7, comes into contact with the ground, so that the operator can easily perform the machine body in a state where the roughening of the field is suppressed as much as possible. The workability is good because of the swivel operation.

  The invention according to claim 7 is configured to raise the rear traveling device 6 to the upper storage position in conjunction with lowering the front drive traveling device 7 to the lowered position when the vehicle turns. The transplanter according to any one of claims 6 is used.

  Therefore, in addition to the action of the invention according to any one of claims 1 to 6, the invention described in claim 7 lowers the driving drive device 7 on the front side to the lowered position when the vehicle is turning. Then, the rear traveling device 6 is interlocked and lifted to the upper storage position, so that the operator can push down the steering handle 2 greatly, and the seedling transplanting part I arranged at the front part of the machine body is raised upward. Therefore, the operator can easily perform the turning operation of the airframe, and the workability is good.

  Therefore, the transplanting machine of the present invention can efficiently and easily perform the body turning work, improve the work performance and workability, perform the good seedling transplanting work, and appropriately solve the problems of the invention with a simple configuration. be able to.

It is a side view of a transplant machine. It is a top view of a transplant machine. 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 an effect explanatory view which shows an effect | action of the seedling supply apparatus and seedling planting apparatus when it sets to 300 mm between stripes (a: Plan view for action description, b: Back view for action description). It is an effect explanatory view which shows an effect | action of the seedling supply apparatus and seedling planting apparatus when it sets to 300 mm between stripes (a: Plan view for action description, b: Back view for action description). It is a top view for effect | action description which shows the arrangement | positioning relationship of a crawler traveling apparatus, a seedling planting apparatus, and a pressure-reducing wheel. It is a hydraulic circuit diagram which moves a right-and-left crawler traveling device up and down. It is a perspective view for action explanation which shows the up-and-down operation mechanism of a pressure reducing wheel. It is a perspective view which shows the arrangement structure of a fuel tank and a step. It is an enlarged side view which shows the arrangement configuration of a fuel tank and a step. It is a perspective view which shows the other example which provided the rotary seedling mounting stand. It is a side view of the transplant machine which shows the other example of a traveling apparatus. It is a perspective view for effect | action description which shows the other example which suppresses the soil around the planted seedling with an irrigation apparatus.

  A 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 device 23 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 transplanter 1 includes a pair of left and right rear wheels that are supported by rolling so as to be provided with two openable / closable beak-like seedling planting bodies 5 that are moved up and down by a vertical movement mechanism 4 that is driven up and down to a machine body that includes a steering handle 2. 6 and a pair of left and right crawler traveling devices 7, which are traveling devices that are driven and rotated by transmission of power from the engine 3. The rear wheel 6 and the crawler travel device 7 are configured to travel along the ridge groove so that the aircraft can travel above the ridge U.

  A mission case 8 is arranged in front of the engine 3, and the output shaft of the engine 3 enters the mission case 8. Engine power is transmitted from the output shaft of the engine 3 to the transmission mechanism in the mission case 8. It is the composition which becomes. A 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 the wheel drive is extended from the transmission case 8 to the left and right sides of the transmission case 9a. The tip of the shaft enters and transmits driving power to the transmission mechanism in the transmission case 9. Then, the traveling power is transmitted to the drive shaft 10 that extends to the front side of the body through the transmission mechanism in the transmission case 9 and projects to the side on the front end side, and the crawler traveling device 7 is driven to rotate. ing.

  Here, the crawler traveling device 7 will be described. A front wheel 7b and a rear wheel 7c are pivotally supported on the front and rear of a lower portion of the triangular crawler frame 7a in a side view, and a drive wheel 7d is provided at the upper end of the crawler frame 7a. The drive wheel 7d is driven and rotated by a drive shaft 10 provided at the front end of the transmission case 9, and is wound around the drive wheel 7d, the front roller 7b, and the rear wheel 7c. As the crawler 7e is rotated in the direction of arrow A, the machine body is configured to travel forward.

  Further, a crawler side arm 7g is extended upward from a boss 7f fixed to the crawler frame 7a in a state where the drive shaft 10 of the drive wheel 7d is fitted, and the upper end of the crawler side arm 7g and a transmission described later. The arm 16 provided with a base at the rotating portion of the case 9 is connected by a connecting rod 7h. The arm 16, the transmission case 9, the crawler side arm 7g, and the connecting rod 7h constitute a parallel link mechanism.

  On the other hand, a hydraulic rolling cylinder 11 that can be expanded and contracted for adjusting the right and left tilt of the airframe is provided on the right side of the airframe, and is rotated around the vertical axis around the lifting hydraulic cylinder 14 described later at the tip of the piston rod 11a of the rolling cylinder 11. The right end portion of the balance rod 12 provided so as to be movable is attached. Further, the left end of the balance rod 12 is connected to the rod 13.

  When the lifting control valve B1 is switched based on the detection result of the saddle height detection sensor S in the lifting hydraulic cylinder 14 provided at the center of the body, and the piston rod 14a protrudes forward of the body, the rod 13 and the rolling cylinder 11 also moves forward, and the left and right arms 16a connected to the respective bases of the rod 13 and the rolling cylinder 11 rotate forward in a side view of the body, and accordingly, the bases of the left and right arms 16a are fixed to each other. The left and right transmission case 9 is rotated downward about the rotation fulcrum 9a, the left and right crawler traveling device 7 is lowered, and the body is raised. On the contrary, when the piston rod 14a of the lifting hydraulic cylinder 14 is retracted rearward, the left and right arms 16a are rotated rearward, and accordingly, the left and right transmission case 9 is rotated upward about the rotation fulcrum 9a. The left and right crawler traveling device 7 is raised and the body is lowered.

  The ascending and descending of the left and right crawler traveling device 7 constitutes a parallel link mechanism with the arm 16, the transmission case 9, the crawler side arm 7g and the connecting rod 7h. It moves up and down, that is, the entire bottom contact surface 7e 'of the left and right crawler traveling device 7 always rises and descends in contact with the groin in the field, and always exhibits appropriate traveling performance regardless of the height of the ridge U. And good seedling transplanting work can be done.

  In addition, the heel height detection sensor S is disposed at the rear position between the left and right sides of the left and right seedling planting body 5, and detects the position of the upper surface of the heel U between the left and right plants planted on the upper surface of the heel U to detect the left and right crawlers. Since the traveling device 7 is vertically controlled, the left and right seedlings planted by the left and right seedling planting body 5 have an appropriate planting depth, and an appropriate seedling transplanting operation can be performed.

  Here, the configuration of the part in which the left and right crawler traveling device 7 moves up and down as the left and right transmission case 9 rotates about the rotation fulcrum 9a via the left and right arms 16a in the lifting hydraulic cylinder 14 will be described in detail. Hexagonal tubular left and right pivot cylinders 16b are provided on both sides of the mission case 8 so as to rotate around the left and right axle housings 8a provided to project outward from the left and right sides of the machine body, and left and right arms 16a are respectively provided on the left and right pivot cylinders 16b. The left and right rotating cylinder portion 16b is configured to be rotatably supported by the distal ends of left and right support bodies 20a whose base portions are fixed to the airframe. Then, a hexagonal cylindrical left and right internal rotation cylinder portion 16c that can be telescopically moved in the left and right direction by fitting with the internal hexagon of the left and right rotation cylinder portion 16b is provided, and the outer end of the left and right internal rotation cylinder portion 16c is provided. The base of the left and right transmission case 9 that swings up and down is fixed. In addition, left and right drive shafts for transmitting power from the transmission case 8 to the left and right transmission case 9 are provided in the left and right internal rotation cylinder portion 16c so as to coincide with the rotation fulcrum 9a.

  The left and right internal rotation cylinder portion 16c fitted into the left and right rotation cylinder portion 16b penetrates from the outer periphery of the left and right rotation cylinder portion 16b, and the left and right ends of the left and right internal rotation cylinder portions 16c are in contact with the outer periphery. The left-right movement is fixed by a bolt 16d with a handle. In other words, when adjusting the left / right position (tread adjustment) of the left / right crawler travel device 7 in order to cope with the heel U width, the bolt 16d with the left / right handle is loosened so The moving cylinder portion 16c is moved in the left-right direction of the machine body to adjust the position of the left and right crawler traveling device 7, and the bolts 16d with left and right handles are tightened again to fix the left and right inner rotating cylinder portion 16c to the left and right rotating cylinder portion 16b. In this way, the left and right crawler traveling device 7 can freely adjust its left and right position (tread adjustment).

  Further, when the rolling cylinder 11 is extended and contracted, only the right transmission case 9 is moved up and down, and only the right crawler traveling device 7 is moved up and down to tilt the machine body to the left and right. Then, the rolling control valve B2 is operated by operating the manual machine tilt adjustment lever 15 provided in the vicinity of the feet of the worker who is seated in the seat 79 described later and is performing the transplanting operation, so that the operator Can arbitrarily expand and contract the rolling cylinder 11. That is, the operator can arbitrarily tilt the machine body left and right by arbitrarily operating the manual machine body tilt adjustment lever 15 according to the conditions of the field. For example, in a farm field on a sloping slope in a mountainous area, when the left and right grooves of the kite U have different heights, when the aircraft runs along the kite U, the aircraft is tilted toward the valley side. When the rolling cylinder 11 is expanded and contracted by operating the manual body tilt adjustment lever 15 so that the valley-side crawler traveling device 7 moves downward from the mountain-side crawler traveling device 7, the body is corrected to a horizontal state. It is possible to perform transplanting work of seedlings suitable for the cocoon U.

  The pair of left and right rear wheels 6 are rotatable on 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 a rear wheel support frame 17 that extends from the left and right center position below the engine 3 to the left and right. It is attached.

  Further, the left and right central portions of the rear wheel support frame 17 are pivotally supported by a longitudinal axis on the airframe, and extend upward from the rear wheel support frame 17 to the upper end portion of the vertical operating rod 17a and the left arm 16a. Are connected by a connecting rod 17b. A long hole 17c is provided as a flexible mechanism in the connecting portion between the connecting rod 17b and the upper end portion of the vertical operating rod 17a, and the left and right crawler travel device 7 is based on the detection result of the rod height detection sensor S. At the time of seedling transplanting operation that is operating up and down, the connecting rod 17b is free to play in the elongated hole 17c, and the left and right rear wheels 6 are not raised.

  The steering handle 2 is mounted on a rear end portion of a handle frame 2f that is fixedly attached to the engine base of the engine 3 and extends rearward and upward. The steering handle 2 extends rearward and has left and right rear end portions as grip portions 2 a and 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 grip the grip portions 2a and 2a with hands. In the example shown in the figure, the grip portions 2a and 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.

  Also, near the steering handle 2, a left and right crawler traveling device 7, a seedling planting device 23 and a seedling planting device 28 and a seedling feeding device 32 are connected to a main clutch lever 87 for manually turning on and off the driving of the seedling feeding device 24. Only a drive is manually turned on and off, and a planting elevating operation lever 88 for operating the elevating hydraulic cylinder 14 to manually elevate the machine body is provided.

  When the raising / lowering hydraulic cylinder 14 is operated by the planting raising / lowering operating lever 88 and the left and right crawler traveling device 7 is manually lowered to raise the machine body and turn the machine body, Since the connecting rod 17b moves forward beyond the interchangeable portion of the long hole 17c of the connecting portion at the upper end portion of the operating rod 17a, the left and right rear wheels 6 are raised. Accordingly, when turning the aircraft by lowering the left and right crawler travel device 7 at the time of turning the aircraft and turning the aircraft, the left and right rear wheels 6 are raised, so that the operator can grasp the grip portion 2a, The rear part of the aircraft can be pushed down greatly by grasping 2a. Then, only the crawler 7e of the rear rolling wheel 7c, which is the rear end portion of the ground contact bottom surface 7e 'of the left and right crawler traveling device 7, is in a state of grounding, and the worker still keeps the field from being roughed as much as possible. The machine can be turned easily and the workability is good.

  The vertical movement mechanism 4 for operating the seedling planting body 5 is attached to a planting transmission case 22 in which power is transmitted from the transmission case 8 through the transmission shaft 21. 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 planting transmission case 22 is fixedly connected to the front end portion of the mission case 8 by the body frame 20.

  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 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 to stop by the intermittent drive mechanism is adjusted by a speed change mechanism provided in the intermittent drive mechanism, and the adjustment is performed to change and adjust between the seedling planting stocks by the seedling planting body 5 by this adjustment.

  The seedling supply device 24 that supplies seedlings to the seedling planting device 23 including the seedling planting body 5 receives a seedling from above and accommodates seedlings inside thereof (32 seedling supply cups serving as a plurality of seedling containers). 25, a moving mechanism 26 for moving the seedling supply cup 25 so as to pass above the seedling planting body 5, and a bottom portion of the seedling supply cup 25 at the upper position of the seedling planting body 5 to be accommodated inside. An opening mechanism 27 serving as a seedling dropping supply mechanism that drops seedlings 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 cup 25, which is connected to each other like an endless chain, by engaging with the arcuate cutouts on the outer periphery of the winding sprocket 29 provided on the left and right sides. By driving and rotating with the power extracted from the planting transmission case 22, the seedling supply cup 25 is configured to rotate in the direction of arrow A 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 linear portion 38 on the front side so as to pass above the left and right seedling planting bodies 25, and the seedling is supplied to the seedling planting body 5 by dropping into the linear portions 38. Left and right drop supply positions 39 and 40 are set. The left and right pivot shaft 30 around which the seedling supply cup 25 circulates is disposed on the inner side of the machine body from the left and right crawler travel device 7 and in front of the drive shaft 10 position of the crawler travel device 7. Further, the seedling planting body 5 is disposed at the front end portion of the machine body in front of the drive shaft 10 position of the crawler traveling device 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. The adjustment range by the arc-shaped elongated hole 29a is an arrangement pitch of the seedling supply cup 25 in the winding sprocket 29 (one half of an arrangement pitch of first and second seedling supply cups 25b and 25c described later). ) Is set. The arcuate long holes 29a, bolts 36, and the like accommodate the seedlings that are dropped and supplied to the seedling planting bodies 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. The rotation timing changing mechanism C changes the rotation 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 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 that contain seedlings to be supplied in a separate manner, and the first seedling supply cup 25b and the second seedling supply cup 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 42 a, 42 b, 42 c, and 42 d include a main fixed support 42 a that covers the entire region 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. Are provided with first, second and third sub-fixing supports 42b, 42c and 42d. 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 drop position changing mechanism B is configured by a long hole 46 and a mounting bolt 47 which are provided in the first moving support 42e and the second support member 44 in the left-right direction.

  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. The drop position changing mechanism B is constituted by the second moving support 42f, the long hole 48 provided in the left-right direction and the mounting bolt 49, etc. provided in the second moving support 42f.

  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 distance 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 and 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 and 25c. Accordingly, the drop supply positions 39 and 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 and 40 is the first and second seedling supply. It changes by a distance of an integral multiple (1 times) of the arrangement pitch in the cups 25b, 25c (an even multiple (2 times) of the arrangement pitch in the seedling supply cup 25).

  And especially the seedling supply apparatus 24 which supplies a seedling to the seedling planting apparatus 23 provided with the seedling planting body 5 is the front part side (the seedling planting apparatus 23 is arrange | positioned below by the body front end side) by a body side view. And the rear side (the seat 79 side where the worker supplying the seedlings is located) is high and inclined. Further, each seedling supply cup 25 that receives the seedlings of the seedling supply device 24 from above and accommodates the seedlings on the inside rotates in a state of being inclined forward by the inclined arrangement of the seedling supply device 24. .

  Therefore, at the time of a transplanting operation in which an operator is seated on the seat 79 and supplies seedlings to the seedling supply cups 25 of the seedling supply device 24, the worker passes through the lower side of the inclined seedling supply device 24 and the seedling at the front end of the machine body. The planting device 23 can see the state of the seedlings to be planted in the field, and the seedling transplanting work can be performed while checking whether the seedling transplanting work is properly performed. Therefore, the seedling transplanting work can be performed properly and appropriately. .

  Moreover, since each seedling supply cup 25 rotates in a state of being inclined forward, the seedlings accommodated in each seedling supply cup 25 are in a fixed position on the front side of the inclined seedling supply cup 25, and the seedlings are In the same stable state, it is dropped and supplied to the seedling planting body 5 of the seedling planting device 23, and the seedling planting body 5 can plant the seedlings in a good posture. Furthermore, since the seedling supply device 24 is inclined so that the side where the seedling is dropped and supplied to the seedling planting body 5 of the seedling planting device 23 is lowered, the seedling planting body 5 of the seedling planting device 23 is inevitably. Can be arranged at a low position on the body close to the surface of the farm, the vertical operation stroke of the seedling planting body 5 can be shortened, and the body can be made compact and compact.

  And the notch hole 25d is formed in the upper opening of the cylindrical body which accommodates the seedling of each seedling supply cup 25, and this notch hole 25d is outside all the time while each seedling supply cup 25 rotates. When the worker who is seated on the seat 79 supplies seedlings to the seedling supply cups 25 of the seedling supply device 24, the notch holes 25d of the seedling supply cups 25 have the notches 25d. Therefore, the operator can easily supply seedlings with good workability and work efficiency is good. Further, since the seedlings accommodated in each seedling supply cup 25 can be clearly seen from the cutout hole 25d, the operator can immediately know the seedling supply cup 25 for which the seedling has been forgotten to be put in, so that the missing stock due to the seedling supply mistake has not occurred. Therefore, a good seedling transplanting operation can be performed. Further, when the auxiliary worker is near the machine body, the auxiliary worker also sees the seedlings contained in the seedling supply cups 25 from the cutout holes 25d, and the operator forgets to put the seedlings. The seedling supply cup 25 can be immediately identified, and the stock removal can be prevented, so that a good seedling transplanting operation can be performed.

  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 transplanter 1 has a configuration of a plurality of planted plants 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-like seedling planting body 5 with the 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. The body 5R rotates in the left-right direction to open the lower end. The left and right seedling planting body 5 is configured to vertically move and open and close alternately left and right by the vertical movement mechanism 4 and the opening and closing mechanism 50 and to plant two seedlings in a staggered manner in the 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 width L1 of the upper end opening of the seedling guide 51 is wider than twice the pitch P1 of the seedling supply cup 25 of the seedling supply device 24 (that is, the width of the bottom ends of the two seedling supply cups 25 arranged side by side. The width is wider than the interval L2.

  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 right and left seedling planting body 5 moves 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 on the right seedling planting body 5R, and the left opening / closing arm section provided on the left seedling planting body 5L. 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 right seedling planting body 5R and the left seedling planting body 5L can be rotated in different directions (left and right directions) by the actuating arm 64, 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. A horizontal boss 69 is also provided. 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 have a substantially equilateral triangular shape, 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 boss 69, the position adjusting shaft 70, the set bolt 71 and the like constitute a planting position changing mechanism A.

  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 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 used. A planting position changing mechanism that can move the seedling planting body 5 is configured. 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, five 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 by aligning the grooves 72 with the ends of the bosses 69, a gap of 300 mm and 350 mm are provided. It can be adjusted to the left and right positions of the seedling planting body 5 between the streak, 400 mm streak, 450 mm streak, and 300 mm streak so that the position of the seedling planting body 5 can be easily changed. In addition, the left-right position of the seedling planting body 5 is not limited to the above five locations, and the left-right position of the seedling planting body 5 is fixed to the position adjusting shaft 70 at an arbitrary position, and the streak adjustment is performed in a stepless manner from 300 mm to 300 mm. Can be performed.

  In addition, a seedling table 90 is provided at a position above the center where the seedling supply cup 25 of the seedling supply device 24 moves around. The seedling stand 90 is formed in an oval tray shape in a plan view, and is configured to store seedlings supplied to the seedling supply cup 25 in the internal space.

  That is, when transplanting naked seedlings (hereinafter referred to as naked seedlings) sold in a container such as cardboard, the naked seedlings are stored in the internal space of the seedling stand 90, An operator seated on the seat 79 sequentially takes out the naked seedlings stored in the internal space of the seedling table 90 and supplies them to each seedling supply cup 25 to perform transplantation work.

  In addition, the frame portion of the seedling supply device 24 is connected to the body frame 20 by the reinforcing 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 is configured so that it can be done.

  Further, the planting depth adjusting lever 93a provided at the rear end position of the left end portion of the seedling supply device 24 corresponds to the neutral position of the lifting control valve B1 in the linkage mechanism of the aforementioned heel height detection sensor S and the lifting control valve B1. An adjustment portion for changing the vertical position of the heel height detection sensor S is provided, and the adjustment portion is operated by the planting depth adjustment lever 93a to correspond to the neutral position of the lift control valve B1. The planting depth can be adjusted by changing the vertical position.

  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 pitch P1, which is the distance between the centers of the adjacent cups 25, is 80 mm, it moves 160 mm). And, for example, when set between the 300 mm strips shown in FIGS. 5 and 6, the seedling planting body 5 has the timing of opening the bottom lid 25 a of the seedling supply cup 25 at the drop supply positions 39 and 40. It is set to be when it rises to the very bottom. At this time, the first moving support 42e for determining the right drop supply position 39 is set at a position marked with an interval of 300 mm, and the second moving support 42f for determining the left drop supply position 40 is also an interval between the stripes. Set to the position marked 300mm. 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 above the planting body 5, and the seedling supply work can be performed with a margin, In addition, seedlings can be reliably supplied to the two seedling planting bodies 5. At this time, the bottom cover 25a of the seedling supply cup 25 with respect to the right seedling planting body 5 opens at the center position of the width L1 of the upper end opening of the seedling guide 51 of the seedling planting body 5, and proper seedling supply and planting can be performed. . The bottom cover 25a of the seedling supply cup 25 for the left seedling planting body 5 opens at a position slightly ahead of the center position of the width L1 of the upper end opening of the seedling guide 51 of the seedling planting body 5, but the upper end opening of the seedling guide 51 The width L1 of the portion is wider than twice the pitch P1 of the seedling supply cup 25 of the seedling supply device 24 (that is, wider than the distance L2 between the two ends of the two seedling supply cups 25 arranged side by side). Since it is configured, it is possible to supply and plant appropriate seedlings.

  Moreover, as shown in the drawing, the left and right pressure reducing wheels 73 for reducing the soil around the seedling while covering the surrounding area of the planted seedling are provided on the right side of the left and right seedling planting body 5, respectively, The roots of the seedlings that have been planted are suppressed from both the left and right sides to promote rooting.

  Here, the support structure of the left and right pressure reducing wheels 73 will be described. A pressure-reducing arm shaft 74c having a regular hexagonal axis configuration along the horizontal direction is provided on a left and right support arm 74b extending forward from the pressure-reducing frame 74a fixed to the body frame 20 in a lateral direction so as to freely rotate. . Then, left and right pressure-reducing wheels 73 are provided at the front of the left and right pressure-reducing arms 75 so as to be freely rotatable, and rear portions of the left and right pressure-reducing arms 75 are respectively formed with U-shaped rotation base end portions 75a. As a configuration in which the pressure suppression arm shaft 74c is passed through a circular through hole 75b provided at the rear end portion of the end portion 75a, the left and right arms 75 freely rotate up and down with the pressure suppression arm shaft 74c as a rotation fulcrum. It has a configuration.

  On the other hand, a slide boss 75d penetrating the regular hexagonal hole 75c in the left-right direction is disposed inside the U-shape of the rotation base end 75a in a plan view and is externally fitted to the pressure-reducing arm shaft 74c so as to be able to move only to the left and right. Has been placed. That is, a regular hexagonal hole 75c formed through the slide boss 75d in the left-right direction is externally fitted to a regular hexagonal pressure-reducing arm shaft 74c, and the pressure-reducing arm shaft 74c is tightened by tightening a set bolt 75e. The movement can be fixed in the axial direction. Accordingly, by tightening the set boss 75e and fixing the slide boss 75d on the inner side of the rotation base end portion 75a of the pressure reducing arm 75 to the pressure reducing arm shaft 74c, the pressure reducing arm 75 moves in the left-right direction. Therefore, the front left and right pressure-reducing wheel 73 only moves up and down, and the pressure-repressed position of the left and right pressure-reduced wheel 73 can be moved and adjusted left and right.

  A front end portion of each pressure suppression arm 75 is formed in a gate-shaped rear frame 75f in a rear view, and the pair of left and right pressure suppression wheels 73 are disposed on both left and right sides of the rear frame 75f so as to be rotatable on a support shaft 73a. I support it. The rear frame 75f is configured to be able to move in the forward direction across the upper part of the seedling planted in the ridge U. Further, a plurality of balance weights 75h are fitted and supported by a weight mounting arm 75g provided upward from the rear frame 75f, and the pressure reduction pressure can be adjusted by changing the number of the balance weights 75h.

  Stopper arms 75i are fixed to both the left and right sides of the slide boss 75d. The stopper arms 75i extend below the pivot base end 75a forward of the machine body, and the distal end thereof is the pivot base end 75a. In this configuration, the pressure-reducing arm 75 is prevented from moving downward more than a predetermined amount by contacting with the lower side of the U-shaped front portion. That is, the pressure-reducing arm 75 is rotated upward and downward from the position where the lower side of the rotation base end portion 75a contacts the stopper arm 75i, and the left-right pressure-reducing wheel 73 moves up and down.

  Further, the mechanism for storing and rotating the left and right pressure reducing wheels 73 upward is linked to the crawler travel device 7 on the side that does not move up and down by the expansion and contraction operation of the rolling cylinder 11, so that it is appropriate without being affected by the expansion and contraction operation of the rolling cylinder 11. The left and right pressure reducing wheels 73 can be accommodated upward.

  In addition, a forward seat 79 is provided above the bonnet Bo that covers the upper part of the engine 3 and the mission case 8 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. ing. The seat 79 is supported by the airframe via a support frame 81 that extends upward through one of the left and right sides (left side) of the bonnet Bo.

  The step 80 includes a main step 82 disposed between the seat 79 and the seedling supply device 24 in plan view of the machine body, and sub-steps 83 provided on both the left and right sides of the seat 79 and the bonnet Bo. The sub-step 83 extends back and forth from the rear end portion of the aircraft to near the main step 82, the rear portion 83a is configured to be one step lower than the front portion 83b, and an operator can get on and off from the rear end portion of the aircraft. It is configured to be able to. An elevating mechanism (arm 16a, rolling cylinder 11, rod 13, etc.) for elevating the wheel (crawler traveling device) 7 can be arranged below the front portion 83b which is the upper stage of the sub-step 83, and The space is effectively used to make the aircraft more compact. Further, according to the tread change of the crawler traveling device 7, the transmission case 9 that rotates up and down can be disposed below the front portion of the sub-step 83. In addition, a rising portion 82a is provided at the front end of the main step 82 so as to be inclined upward and the operator's foot sitting on the seat 79 contacts the vertical movement mechanism 4 of the seedling planting device 23 by the rising portion 82a. Protects against this. 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. The rising portion 82 a includes a main clutch pedal 84 for driving the left and right crawler traveling device 7, the seedling planting device 23 and the seedling supply device 24, and a left and right side brake pedal for braking the left and right crawler traveling device 7. 85, and an operator in the seat 79 can stop the aircraft and correct the traveling direction of the aircraft.

  Left and right seedling platforms 89 are arranged on the left and right sides of the machine body. The left and right seedling mounting platforms 89 have three upper seedling mounting portions 101a, 101b, and lower seedlings on the inner side of the body above the seedling support frame 100, the base of which is rotatably and fixedly provided on the body. A mounting portion 101c is provided.

  The upper seedling loading portion 101a is rotated on the seedling support frame 100 by the upper pivot shaft 102a so that the seedling placement state is directed from the seedling support frame 100 toward the inside of the machine body and to the outside of the machine body of the seedling support frame 100. The middle-stage seedling mounting portion 101b is configured to be freely switchable to a folded storage state facing downward, and the seedling support portion 100b is a seedling that faces the inward body from the seedling support frame 100 on the middle support shaft 102b. It is configured to be able to rotate and switch between a mounted state and a folded storage state that is rotated upward to a position along the inside of the seedling support frame 100 and directed upward. And the lower stage seed mounting part 101c is fixing the base part to the seedling support frame 100 in the seedling mounting state which faced the inward body direction from the seedling support frame 100.

  In addition, each upper seedling mounting section 101a, middle stage seedling mounting section 101b, and lower seedling mounting section 101c can stably mount a cell tray T having a rectangular shape in plan view in which pot portions P are arranged in a vertical and horizontal manner and are integrally formed. 103 are provided. Each of the seedling platforms 103 is formed of a synthetic resin such as plastic on which the cell tray T is mounted, and has a rectangular mounting surface 103b having a plurality of through holes 103a in plan view, and a front and back of the mounting surface 103b. The front and rear walls 103c that are integrally formed upright, the left and right walls 103d that are integrally formed upright to the left and right of the placement surface 103b, and the cell tray T that is placed on the seedling placement stage 103 rearward the aircraft. When the aircraft is tilted (when the aircraft is turned, the lifting hydraulic cylinder 14 is actuated to lower the left and right crawler travel device 7 and the operator pushes the rear of the aircraft down, so that the aircraft is tilted backward). The tray fall prevention body 103e is configured to prevent the fall.

  And the tray fall prevention body 103e is comprised with the housing, and it inserted the lower end part into the upper surface of the rear wall 103c (the position biased outward from the left-right center of the seedling stand 103 in the body front view). In a state, it is fixed to the rear wall 103c.

  In particular, the upper seedling mounting portion 101a is rotated to the outside of the body of the seedling support frame 100 to be in a folded storage state facing downward, and the middle seedling mounting portion 101b is moved to a position along the inside of the seedling support frame 100. If the folding storage state is turned and turned upward, the upper part of the lower seedling mounting part 101c fixed to the seedling support frame 100 becomes an open space, so that the seedlings are put on the seedling mounting base 103. A container such as a large cardboard can be placed, and the work of transplanting a bare seedling that is sold in a container such as a cardboard can be easily and efficiently performed.

Here, the operation in the case where the cell tray T on which the seedling has grown is placed on the left and right seedling mounting stand 89 and the transplanting operation is performed will be described.
The seedling support frame 100 is rotated so that the left and right seedling mounting platforms 89 are positioned on the left and right sides of the seat 79, and the upper seedling mounting unit 101a, the middle seedling mounting unit 101b, and the lower seedling mounting unit 101c are located in the body. A seedling placement state facing the work seat 79 is assumed. Next, the cell tray T on which the seedling has grown is placed on each of the upper seedling placing section 101a, the middle seedling placing section 101b, and the lower seedling placing section 101c. Then, the entire bottom surface portion of the cell tray T is stably received by the mounting surface 103b having a rectangular shape in plan view, and the cell tray T is in a stable state with each of the upper seedling mounting portions 101a, the middle seedling mounting portions 101b, and the lower seedling mounting portions 101c. Placed on.

  Further, the operator sits on the seat 79, drives each part to advance the machine body, and the seedling placed on the seedling stand 90 (previously, the operator removes the seedling from the cell tray T of the left and right seedling placing stand 89. The seedlings placed on the table 90 are taken out and supplied to the seedling supply cups 25 to perform transplantation work. At this time, the operator seated on the seat 79 can easily take out the seedling from the seedling table 90 and supply it to each seedling supply cup 25 to perform the transplanting work efficiently and easily.

  In addition, the upper seedling mounting part 101a, the middle seedling mounting part 101b, and the lower seedling mounting part 101c are configured by a box at a position biased outward from the center of the left and right of the seedling mounting base 103 in the front view of the rear wall 103c. Since the tray fall prevention body 103e is provided, when the left and right crawler travel device 7 is lowered to raise the machine body to turn the machine body at the end of the heel U, and the machine body is tilted backward, each mounting surface 103b It is possible to prevent the placed cell tray T from falling to the rear of the machine body with the tray drop blocking body 103e having a simple structure constituted by a casing, and can perform a favorable turning operation and perform a transplanting operation with good workability.

Next, a description will be given of an operation in a case where a container such as a cardboard containing naked seedlings is placed on the left and right seedling mounting base 89 to perform a transplanting operation.
First, the upper seedling mounting portion 101a is rotated to the outside of the body of the seedling support frame 100 so as to be folded and stored downward, and the middle seedling mounting portion 101b is rotated to a position along the inside of the seedling support frame 100. Thus, the folded storage state is set so that the upper portion of the lower seedling mounting portion 101c fixed to the seedling support frame 100 is an open space. Then, a container such as a large cardboard in which a bare seedling is placed is placed on the seedling stage 103 of the lower seedling stage 101c. Then, naked seedlings are also placed in the internal space of the seedling table 90, and the operator sits on the seat 79, drives each part to advance the machine body, sequentially removes the naked seedlings from the seedling table 90, and each seedling. It is supplied to the supply cup 25 and transplanted. At this time, since the seedling table 90 is provided at an upper position in the center where the seedling supply cup 25 of the seedling supply device 24 moves around, the worker sitting on the seat 79 can easily bare the seedling table 90 from the seedling table 90. The seedlings can be taken out and supplied to each seedling supply cup 25 to perform the transplanting operation efficiently and easily.

  At this time, since a container such as a large cardboard containing naked seedlings is placed on the lower seedling mounting portion 101c fixed to the seedling support frame 100, the container such as a large cardboard containing naked seedlings is stable. It can be placed in a state, and a good seedling removal operation can be performed, resulting in high work efficiency.

Next, when there are no bare seedlings in the seedling stand 90, the bare seedlings are taken out from the cardboard container placed on the right and left seedling stand 89 and transferred to the seedling stand 90, and the transplanting operation is continued. To do.
In addition, since the upper stage seed placement part 101a is rotated from the seedling placement state to the outside of the body of the seedling support frame 100 and switched to the folded storage state facing downward, the upper stage seed placement part 101a is supported in the folded storage state. Since it does not protrude upward from the frame 100, it is possible to avoid a situation in which the machine body height is increased and the upper seedling mounting portion 101a is in contact with another object and is damaged.

  Further, a stand support arm 95 is extended from the rear end portion of the handle frame 2f to which the steering handle 2 is attached to the lower side of the machine body to support the parking stand 96. The parking stand 96 is welded and fixed to the lower end portion of the vertical support rod 96a, and the vertical support rod 96a inserted in the vertical direction through a guide pipe member 95a fixed to the lower end portion of the stand support arm 95 in the vertical direction. The grounding body 96b is provided. An upper through hole 96c and a lower through hole 96d for position fixing are provided at the upper and lower parts of the vertical support rod 96a, and the vertical position of the parking stand 96 inserted through the guide pipe material 95a at the lower end of the stand support arm 95 is provided. When the support rod 96a is raised upward and the lock pin 97 is inserted into both the lower through hole 96d of the vertical support rod 96a and the through hole provided in the guide pipe material 95a, the parking stand 96 is stored above the fuselage. The storage state is reached. In this stored state, since the parking stand 96 is stored above the machine body, a favorable transplanting operation can be performed without obstructing the transplanting operation.

  Next, the lock pin 97 is pulled out, the vertical support rod 96a of the parking stand 96 inserted through the guide pipe material 95a at the lower end of the stand support arm 95 is lowered downward, and the upper through hole 96c and the guide pipe of the vertical support rod 96a are lowered. When the lock pin 97 is inserted into both of the through holes provided in the material 95a, the grounding body 96b of the parking stand 96 is grounded to enter a parking state in which the body is supported. In this parked state, the tread adjustment of the left and right crawler traveling device 7 can be easily performed by operating the planting lifting and lowering operating lever 88 to operate the lifting hydraulic cylinder 14 to raise the left and right crawler traveling device 7 to a position where it does not contact the ground. It can be done. In addition, even when the aircraft is placed on a truck bed or the like and moved, if the parking stand 96 is parked, the hydraulic pressure of the elevating hydraulic cylinder 14 is released and the left and right crawler traveling device 7 is moved stably. Thus, the airframe can be supported by the parking stand 96.

  As described above, since the parking stand 96 is provided at the lower position of the steering handle 2 at the rear of the aircraft, the operator can easily switch the parking stand 96 from the rear of the aircraft to the parking state and the storage state, thereby improving workability. .

  Further, when the operator turns the body during seedling transplanting work in the field, the hydraulic cylinder 14 for raising / lowering is operated with the raising / lowering operating lever 88 as described above to manually lower the left / right crawler traveling device 7. The aircraft is raised and the grip 2a, 2a of the steering handle 2 is gripped and the rear of the aircraft is largely pushed down to turn the aircraft. Since the parking stand 96 at the lower position of the steering handle 2 is in the stowed state, the operator can easily put the foot on the grounding body 96b of the parking stand 96 and step on the weight so that the rear part of the airframe can be easily Can be pushed down greatly, turning operation can be easily performed, and workability is good.

10 and 11 show the arrangement of the fuel tank 98 and step 80 of the engine 3.
A fuel tank 98 is provided near the engine 3 disposed at the rear of the airframe between the left and right substeps 83 of step 80, and the fuel tank 98 is covered with a bonnet Bo. Then, the fuel tank 98 is formed of synthetic resin through which the fuel stored inside can be seen from the outside, and the bottom surface vicinity of the fuel tank 98 is extended to the lower side of the main step 82 of the step 80 toward the front of the fuselage. An extension part 98a is formed, and the main step 82 covering the upper part of the extension part 98a is provided with a number of non-slip slits 82b for the operator who can see the lower part.

  Further, a supply port 98b for supplying fuel is provided on the upper surface of the fuel tank 98, and a lid 98c for closing the supply port 98b is provided. The bonnet Bo below the seat 79 is formed with a through hole 99a for opening the lid 98c and supplying fuel from the supply port 98b of the fuel tank 98. When the fuel is not supplied, the through hole 99a is formed. The hole 99a is covered with a synthetic resin lid 99b.

  Therefore, when the worker is seated on the seat 79 and transplanting the seedling, the extension portion 98a of the fuel tank 98 can be seen through the slit 82b of the main step 82 on which the worker's feet are placed. It is possible to grasp that the fuel in the fuel tank 98 is immediately reduced at the time of transplanting work, and the workability is good.

  In particular, a seedling transplanting part I composed of a planting transmission case 22, a seedling planting apparatus 23 and a seedling supply apparatus 24 is arranged at the front part of the aircraft traveling on the left and right crawler traveling device 7 and the left and right rear wheels 6. Since the seat 79 is arranged on the machine body behind the seedling transplanting part I, an operator seated on the seat 79 during the seedling transplanting work is directed to the seedling transplanting part I in various directions (seedling supply device) The operation of supplying the seedlings to 24 and the operation of monitoring the operation of each part to determine whether the seedling transplanting operation is normally performed or the like can be performed, and the seedling transplanting operation can be performed appropriately and with good workability. In addition, the front / rear balance of the aircraft is good, and good seedling transplanting work can be performed.

  And since the left and right crawler traveling device 7 on the front side of the fuselage is a driving traveling device and the left and right rear wheels 6 on the rear side of the fuselage are idle-type traveling devices, the left and right crawler traveling device 7 on the front side of the fuselage travels so as to pull the fuselage. Therefore, the straightness of the airframe is good, and the airframe can travel well along the ridge U so that an appropriate seedling transplanting operation can be performed.

  Further, since the steering handle 2 is provided at the rear part of the machine body, the elevating hydraulic cylinder 14 is operated by the planting elevating operation lever 88 and the left and right crawler traveling device 7 on the front side of the machine body is manually lowered to raise the machine body. When turning the aircraft, the operator grasps the grips 2a, 2a of the steering handle 2 and pushes down the rear of the aircraft, so that the seedling transplanting part I is located at the front of the aircraft, so that it rises high and easily Workability is good because the aircraft can turn.

FIG. 12 shows another example in which a rotary seedling mounting table 110 is provided at the front of the machine body instead of the left and right seedling mounting tables 89.
The front seedling support frame 111 whose base is fixed to the planting transmission case 22 extends forward through the lower part of the seedling supply device 24, and its front end is erected upward at the front end of the machine body. ing. And the boss | hub part 112 provided in the center part of the rotary seedling stand 110 is externally fitted by the upper end part of this front seedling stand support frame 111, and the rotary seedling stand 110 is comprised rotatably.

  The rotary seedling stand 110 has a support arm 113 extending in three directions from a central boss 112, and a cylindrical member 114 is fixed to the tip of each support arm 113. Each cylindrical member 114 is rotatably provided by inserting a housing 116 provided with a gripping portion 115 fixed to one end. Further, a base portion of a stopper rod 117 extending below each support arm 113 is fixed to one side of each housing 116, and a base portion of the outer tray support plate 118 is fixed to the other side.

  Therefore, when holding the grip 115 and placing the casing 116 in a state where the stopper hook 117 is positioned below the support arm 113, the support arm 113, the casing 116, and the outer tray support plate 118 are in a horizontal plane, and the cell tray on which the seedling has grown is formed. T can be placed horizontally.

  Further, when the holding body 115 is held at the position where the stopper rod 117 is removed from the lower side of the support arm 113 by holding the grip portion 115, the outer tray support plate 118 is inclined outward with respect to the support arm 113, so The grown cell tray T is inclined outward. On the other hand, an L-shaped stopper member 120 that locks both side ends of the cell tray T is fixedly provided on the seedling table 90 of the seedling supply device 24, and the gripping unit 115 is positioned above the seedling table 90. , The outer tray support plate 118 is inclined outward with respect to the support arm 113 so that the cell tray T on which the seedling has grown is inclined outward, and both end portions thereof are stopper members. When locked at 120, the cell tray T is in a state where the upper surface of the cell tray T on which the seedling has grown on the seedling table 90 faces the worker seated on the seat 79, and the worker easily takes out the seedling from the cell tray T. Thus, the seedling supply cup 25 can be provided, so that the seedling supply operation can be easily performed and the work efficiency is good.

  Then, when the seedlings of the cell tray T in a state of being placed in an inclined posture on the seedling table 90 disappear, the holding body 116 is held by the holding portion 115 so that the stopper rod 117 is positioned below the support arm 113. The cell tray T is leveled, the rotary seedling stage 110 is rotated, the cell tray T placed on the other support arm 113 is similarly operated, and the cell tray T on which the seedling has grown on the seedling stage 90 is The seedling transplanting operation is continued with the upper surface facing the operator seated on the seat 79.

  FIGS. 13 and 14 show a four-wheel drive traveling device instead of the left and right crawler traveling device 7 and the left and right rear wheels 6 so that the seedling transplanting part I can be moved up and down relative to the machine body and the soil around the seedlings. Another example is shown in which an irrigation device 150 is provided in place of the left and right suppression wheels 73 to suppress the soil, and the seedlings planted by the irrigation device 150 are irrigated and simultaneously the soil is suppressed by the irrigation water pressure.

  A left and right chain case 130 that is long on the left and right sides of the transmission case 8 is fixed to the left and right sides of the transmission case 8 in the front-rear direction. Left and right drive sprockets 131 respectively provided on the left and right front wheel driven sprockets 132 provided on the left and right front wheel drive shafts 132a on the front end side, and rear wheel driven sprockets 133 provided on the left and right rear wheel drive shafts 133a on the rear end side, respectively. A left and right drive chain 134 that spans the left and right drive sprocket 131, the left and right front wheel driven sprocket 132, and the left and right rear wheel driven sprocket 133, and a left and right tension sprocket 135 that respectively stretches the left and right drive chain 134 are provided.

The left and right front drive shafts 132a are each provided with left and right drive front wheels 136, and the left and right rear wheel drive shafts 133a are provided with left and right drive rear wheels 137, respectively.
On the other hand, a parallel link mechanism 141 having a base part pivotally supported at the upper end of a seedling transplanting part support frame 140 erected upward from the rear part of the left and right chain cases 130 is provided facing forward, and the front end of the parallel link mechanism 141 is provided. A seedling transplanting part I composed of a planting transmission case 22, a seedling planting device 23 and a seedling supply device 24 is attached to the part, and the seedling transplanting part I is configured to move up and down in parallel. Further, the base of the lifting hydraulic cylinder 142 is pivotally supported on the rear part of the transmission case 8, the tip of the piston 142 a is connected to the parallel link mechanism 141, and the seedling transplanting part I is moved up and down in parallel by the lifting hydraulic cylinder 142. It is configured. And the raising / lowering control valve is switched based on the detection result of the heel height detection sensor S, the raising / lowering hydraulic cylinder 142 is operated, and the seedling transplanting part I is automatically raised / lowered to obtain an appropriate seedling planting depth and It has become.

  Moreover, as shown in FIG. 14, the seedling planting body 5 of the seedling planting device 23 irrigates the seedling planted by the irrigation device 150 from both the left and right sides of the seedling planted on the ridge U, and at the same time, the soil by the water pressure of the irrigation water It is set as the structure which suppresses.

  The irrigation apparatus 150 has a left and right irrigation nozzle 152 attached to the lower end of an irrigation support frame 151 having a base fixed to the body of the seedling transplanting section I by a ball joint, and was planted freely according to the type of seedling to be planted and soil conditions. The irrigation angle for the seedling can be adjusted. The left and right irrigation nozzles 152 are configured such that an irrigation pump draws water from a well-known irrigation tank equipped in the airframe and jets water through a water supply pipe 154.

In addition, although the above demonstrated the structure of 2 row planting, you may apply to the structure of 3 or more rows.
Moreover, although the above demonstrated the structure which staggers a plurality of lines, you may apply, for example to the structure which plantes a tree line, such as the structure which made the operation | movement timing of the right and left seedling planting body 5 the same.

  The transplanter of the present invention is not limited to vegetable seedlings but can be used as a transplanter for transplanting other seedlings and bulbs. Moreover, although the riding type transplanter has been described in detail, a walking type transplanter may be used.

2 Steering handle 6 Rear travel device (rear wheel)
7 Front travel device (drive travel device, crawler travel device)
7b Front roller 7c Rear roller 7d Drive wheel 7e Crawler 14 Actuator (lifting hydraulic cylinder)
23 Seedling planting device 24 Seedling supply device 25 Seedling container (seedling supply cup)
25d Notch hole 79 Seat I Seedling transplant

Claims (7)

  In the transplanting machine in which the seedling transplanting part (I) is mounted on the front part of the machine body provided with the traveling devices (7, 6) on the front side and the rear side as viewed from the side of the machine body, and the steering handle (2) is mounted on the rear part of the machine body. The transplanter is configured such that at least the front traveling device is a drive traveling device (7), and the rear traveling device (6) is switchable between a ground traveling state and a storage state in which the rear traveling device is stored upward.   The seedling transplanting device (23) for moving the seedling transplanting part (I) up and down to transplant the seedlings in the field and the seedling planting device (23) move around the seedling planting device (23) to move seedlings into the seedling planting device (23). A seedling supply device (24) equipped with a plurality of seedling containers (25) to be supplied is constituted, and an operator is seated on the machine body toward the seedling supply device (24) at a rear position of the seedling supply device (24). The transplanter according to claim 1, further comprising a seat (79) for performing the operation.   The transplanter according to claim 2, wherein the seedling supply device (24) is arranged so as to be inclined so that the front side is low and the rear side is high in a side view of the machine body.   The transplanter according to claim 3, wherein a seedling planting device (23) is arranged below the front part of the seedling supply device (24).   A notch hole (25d) is formed in the upper opening of each seedling container (25), and the notch hole (25d) faces outward while the seedling container (25) rotates. The transplanter according to any one of claims 2 to 4, wherein the transplanter is configured.   The front drive travel device is a crawler travel device (7) composed of a crawler (7e) wound around a drive wheel (7d), a front wheel (7b), and a rear wheel (7c). The transplanter according to any one of claims 1 to 5, wherein 7) is configured to move up and down in parallel or substantially in parallel with an actuator (14).   2. The structure in which the rear traveling device (6) is raised to the upper storage position in conjunction with the lowering of the front driving traveling device (7) to the lowered position when the vehicle is turning. The transplanter according to claim 6.

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