JP5251397B2 - Seedling transplanter - Google Patents

Description

  The present invention relates to a seedling transplanter for planting seedlings such as vegetables in a field.

As a conventional example of this kind, a transplanting device is provided by a lifting link mechanism at the rear part of a riding type traveling vehicle body, and an operator performs a seedling transplanting operation while steering the traveling vehicle body facing the front of the machine body. When supplying seedlings, the aircraft was stopped, and the worker turned the rear transplanter to perform seedling supply work.
JP 11-46523 A Japanese Patent Laid-Open No. 10-174509

  Therefore, the conventional riding-type seedling transplanter has a large body configuration, is not a small and compact configuration, and has problems in seedling supply efficiency and seedling transplanting efficiency. Furthermore, it is an object to improve operability.

The invention according to claim 1 is a planting part (1b) having a seedling feeding device (4) and a seedling planting device (5) at the rear part of a traveling part (1a) having a front wheel (3) and a rear wheel (2 ). A main frame (14) that extends rearward from the traveling portion (1a) and curves obliquely upward in the middle and extends to the rear of the planting portion (1b). In the seedling transplanting machine provided with the steering handle (6) at the end, the seedling supply device (4) is provided with a seedling tray moving device (40) that moves intermittently in the vertical and horizontal directions, and the seedling tray moving device (40 ) the place in the state and the front high rear lower at the rear above the running portion of the seedling mounting table (90) (1a), a seedling from the seedling tray is placed (T) to the seedling mounting table (90) seedling device for supplying the seedling planting device (42) for taking out one by one seedling planting apparatus (5) (43) and NaeUe With the device (5) arranged on the machine body rearwardly of the seedling supply device (4), seedling planting device (42) is a structure that opens in the left-right direction with the left side member (42a) and a right member (42b), A plurality of slit-like through-holes (42d) extending in the front-rear direction are arranged vertically, the upper slit-like through-hole (42d) is configured to be longer in the front-rear direction, and the base is fixed to the upper part of the main frame (14). A support frame (34) is provided, and the preliminary seedling stage support frame (34) supports the preliminary seedling stage (36) in an inclined position that is lower above the seedling stage (90) and lower toward the front. the front frame (210) extending provided, the seat support frame (211) extending upward from the front frame (210) is provided, working on top of the front and becomes the seat support frame of the traveling unit (1a) (211) who is planting section Oriented at 1b) Sit (212) provided to be seated, characterized by providing supporting empty tray portion (215) in front of the seat (212) by the upper portion of the seat support frame (211) This is a seedling transplanter.

Therefore, the seedling mounting table 90 provided in the seedling supply device 4 so as to be movable in the left-right direction is arranged above the rear part of the traveling unit 1a with the front portion being high and the rear portion being low, and the seedling tray T placed on the seedling mounting stand 90 is The seedling collecting device 43 and the seedling planting device 5 that take out the seedlings one by one and supply them to the seedling planting tool 42 of the seedling planting device 5 are arranged at the rear of the body of the seedling feeding device 4, and the front portion of the traveling unit 1a Is provided with a seat 212 on which an operator is seated in the direction of the planting portion 1b, a preliminary seedling stand support frame 34 having a base fixed to the upper portion of the main frame 14, and a front frame 210 extending forward of the machine body. Since the seat support frame 211 extending upward from the front frame 210 is provided , the body structure can be made small and compact.

In addition, by providing a seat 212 on which the operator is seated in the direction of the planting part 1b at the front part of the traveling part 1a, the seedling transplanting state of the planting part 1b can be easily confirmed. If a situation occurs where the work is not performed properly, it can be dealt with immediately and the seedling transplanting work can be performed appropriately and efficiently. Further, since the preliminary seedling stage 36 is provided in an inclined position that is lower in the upper position and forward of the seedling stage 90, the operator who is seated on the seat 212 holds the seedling tray T placed on the seedling stage 90. When it is determined that it is necessary to supply a new seedling tray T, the new seedling tray T can be easily taken out from the spare seedling mounting table 36 and supplied to the seedling mounting table 90, so that the work efficiency is high.
Further, when the seedling planting tool 42 is opened in the left-right direction, it is possible to avoid a situation in which soil enters the seedling planting tool 42 from the slit-shaped through hole 42d and the amount of soil covering decreases. Since the upper slit-like through hole 42d is configured to be long in the front-rear direction, when the depth of the seedling planting tool 42 is changed by changing the planting depth of the seedling, depending on the depth The amount of soil entering the seedling planting tool 42 automatically becomes an appropriate amount (the deeper the slit-shaped through hole 42d enters the soil), the appropriate soil covering can be performed, and the seedling planting posture is good It becomes.
Further, the operator who is seated on the work seat 212 easily takes out the empty tray T discharged toward the front of the machine body from the lower side of the seedling stage 90, and inside the empty tray storage unit 215 disposed in front of the work seat 212. Can be stored immediately, and work efficiency is good. In addition, since the steering handle 6 is provided at the rear of the aircraft, the operator can easily turn the aircraft by holding the steering handle 6 when the aircraft is turning at the end of the heel.

The invention according to claim 2 is a plurality of devices that operate in synchronism with the seedling planting tool (42) between the seedling harvesting device (43) and the seedling planting tool (42) of the seedling planting device (5). Are provided with a turntable (220) in which seedling supply cups (221...) Are arranged to allow intermittent movement in the vertical direction of the seedling tray moving device (40), but intermittent in the horizontal direction of the seedling tray moving device (40). The seedling transplanting machine according to claim 1, further comprising an automatic transplanting stop lever (250) for stopping the movement and stopping the operation of the seedling collecting device (43) .

Therefore, in addition to the operation of claim 1, the automatic transplant stop lever 250 is operated to stop only the intermittent movement of the seedling tray moving device 40 in the lateral direction and the driving of the seedling collecting device 43. When the operator advances the airframe while only intermittently moving in the vertical direction of 40, the operator takes out the seedling from the seedling tray T and supplies it to each seedling supply cup 221. The seedling is supplied from the seedling supply cup 221 containing the seedling into the seedling planting tool 42 by the rotation of 220, and the seedling planting tool 42 can plant the seedling. Therefore, even if a large seedling or a seedling with poor growth cannot be performed due to a seedling or the like, an operator can plant a large seedling or a seedling with poor growth by supplying the seedling to the turntable 220.

According to the third aspect of the present invention , the rear wheels (2) are provided on the left and right sides of each of the left and right traveling transmission cases (16) so that the rear wheels (2) have four wheels. The rear wheel (2) is inclined so that the distance between the rear wheels (2) becomes narrower, and the rear wheels (2) are driven by the separate drive chains (16a, 16b) provided in the traveling transmission case (16). A plurality of seedling supply cups (221...) Operating in synchronism with the seedling planting tool (42) are disposed between (43) and the seedling planting tool (42) of the seedling planting device (5). In addition to providing a turntable (220), an automatic transplant stop lever (250) for stopping the intermittent movement of the seedling tray moving device (40) in the vertical and horizontal directions and the operation of the seedling collecting device (43) is provided. The seedling transplanter according to claim 1, wherein the seedling transplanter is characterized.

Therefore, in addition to the operation of the first aspect , when traveling with the heel sandwiched, the lateral displacement of the rear wheel 2 is appropriately prevented, the heel followability is improved, and the seedling can be planted appropriately in the heel. . Further, the automatic transplant stop lever 250 is operated to stop only the driving of the seedling mount 90 and the seedling collection device 43 to advance the machine body, and the operator walks from the seedling tray T while walking behind the rear wheel 2. Are taken out and supplied to the seedling supply cups 221..., The seedlings are supplied from the seedling supply cup 221 containing the seedlings into the seedling planting tool 42 by the rotation of the turntable 220, and the seedling planting tools 42 plant the seedlings. Can be attached. Therefore, even if a large seedling or a seedling with poor growth cannot be performed due to a seedling or the like, an operator can plant a large seedling or a seedling with poor growth by supplying the seedling to the turntable 220.

  By constructing the seedling transplanter as described above, the aircraft configuration can be made small and compact while being a riding seedling transplanter, and a seedling transplanter with good work efficiency can be obtained. The problems of the invention can be solved appropriately.

  As an embodiment of the present invention, a vegetable transplanter as an example of a seedling transplanter will be described in detail with reference to the drawings. This vegetable transplanter 1 is a seedling planting part 1b comprising a seedling feeding device 4, a seedling planting device 5 and the like while the machine body is advanced with the traveling unit 1a having traveling wheels 2 and 3 straddling the ridge U. The vegetable pot seedlings in the tray are planted on the upper surface of the bowl U. The operator sits on the seat 212 at the time of seedling transplanting work, and supplies new seedlings from the preliminary seedling mounting stand 36 to the planting section 1b when the number of seedlings decreases while checking the seedling transplanting work status of the planting section 1b. Further, when the aircraft is turning at the heel end, it gets off the aircraft and the aircraft is turned by the steering handle 6 provided at the rear of the aircraft. Hereinafter, the configuration of each unit will be described.

  In the traveling unit 1 a, an engine 9 is disposed in the front part of the traveling unit mission case 7. A hydraulic pump 10 that is driven by the power of the engine is provided on the left side surface of the engine 9. Further, a fuel tank 11 and the like are provided on the upper side of the engine 9, and a bonnet 12 covers the upper part thereof. A long connecting frame 13 having a rectangular shape in side view is integrally provided on the back surface of the traveling unit mission case 7, and the front end portion of the main frame 14 that connects the traveling unit 1 a and the steering handle 6 to the right rear end of the connecting frame. Are firmly connected. The main frame 14 extends rearward, bends obliquely upward in the middle, and extends as it is to the rear position of the planting portion 1b. And the front-end part of the steering handle 6 is attached to the rear-end part so that rotation adjustment is possible, and the left-right grip 6a of the steering handle 6 can adjust height.

  The left and right traveling transmission case 16 is integrally attached to the left and right rotating cylinder portion 15 protruding from the left and right side surfaces of the traveling portion transmission case 7, and the left and right rear wheels 2, which are driving traveling wheels, are attached to the tip of the left and right traveling transmission case 16 It is supported. In addition, left and right front wheel support rods 18 are attached to the left and right ends of a front wheel support frame 17 provided on the lower side of the engine 9 so as to be swingable around a pivot shaft 17a in the front-rear direction. Left and right front wheels 3, which are driven traveling wheels, are pivotally supported by the respective parts.

The traveling unit 1a is provided with a machine body control mechanism that controls the machine body position by moving the left and right rear wheels 2 up and down relative to the machine body. In this airframe control mechanism, an elevating cylinder 21 is provided rearward from a hydraulic valve unit 20 disposed on a traveling unit mission case 7, and a balance rod 22 is provided around a vertical axis at the tip of a piston rod of the cylinder. Is pivotally attached to the. The front and rear ends of the piston rod slide along a guide shaft 24 supported by the hydraulic valve unit 20 and an attachment member 23 attached to the main frame 14. The left and right end portions of the balance rod 22 are connected to the left and right swing arms 25 fixed to the left and right rotating cylinder portion 15 via left and right connecting rods 26. A rolling cylinder 27 is incorporated in the left connecting rod 26, and the length can be changed by extending and contracting the cylinder.

  The elevating cylinder 21 and the rolling cylinder 27 are operated by controlling the hydraulic oil supplied from the hydraulic pump 10 by the control valves 20a and 20b in the hydraulic valve unit 20, respectively. When the elevating cylinder 21 is expanded and contracted, the left and right rear wheels 2 move up and down by the same amount in the same direction, and the aircraft moves up and down. Further, when the rolling cylinder 27 is expanded and contracted, the left and right rear wheels 2 move up and down by the same amount in the opposite direction, and the body tilts left and right.

The planting part 1 b is fixed to the upper surface of the connecting frame 13 at the lower part of the planting part transmission case 30 that is transmitted from the traveling part mission case 7, and the first planting transmission case is arranged on the upper part of the planting part mission case 30. The base of 31 is fixed, and the base of the second planting transmission case 32 is fixed to the tip of the first planting transmission case 31. The first planting transmission case 31 and the second planting transmission case 32 are connected to each operation mechanism of the seedling planting device 5 described later. The first planting transmission case 31 and the second planting transmission case At 32, a planting drive transmission system D1 to the seedling planting device 5 is configured. The seedling planting tool 42 of the seedling planting device 5 is disposed on the rear side of the traveling unit 1a. In addition, a spare seedling table 36 on which a seedling tray is placed is attached to a frame 34 whose base is fixed to the upper part of the main frame 14.

  As shown in FIG. 3, the input shaft 30a of the planting part mission case 30 protrudes forward from the lower end of the case, and by inserting it into the PTO extraction part 7a of the traveling part mission case 7, the PTO It is connected to a shaft on the traveling part side in the take-out part. The planting part mission case 30 is detachably attached to the connecting frame 13 with bolts 35. Therefore, by removing the bolts 35 and removing the input shaft 31a from the PTO extraction portion 7a, the planting portion 1b can be detached from the traveling portion 1a, and the planting portion 1b can be easily maintained.

  In the side view, the planting part mission case 30 is provided rearward and upward from the connection frame 13, and the first planting transmission case 31 is provided rearward and downward from the upper end part of the planting part mission case 30, and the second planting The auxiliary transmission case 32 is provided in the horizontal direction from the lower end of the first planting transmission case 31. With this configuration, a space for moving the balance rod 22 below the second planting transmission case 32 is ensured without making the longitudinal length of the airframe longer than necessary.

  The lower end of the seat support frame 211 is fixed to the front frame 210 whose base is fixed to the traveling unit mission case 7 with bolts and extends forward, and the work seat 212 is attached to the upper part of the seat support frame 211 to A work seat 212 is arranged at the front left and right center position. Further, the front end portions of the left and right steps 213 and 213 are fixed to the seat support frame 211, and the middle portion thereof is supported by the traveling unit transmission case 7 by the left and right step support frames 214 and 214, and is seated on the work seat 212. Left and right steps 213 and 213 on which a person's feet can be placed are arranged on both the left and right sides of the bonnet 12.

  Further, an empty tray storage portion 215 capable of storing a plurality of trays T is disposed in front of the work seat 212, and a lower portion of the empty tray storage portion 215 is fixedly supported on the upper portion of the seat support frame 211. The empty tray storage portion 215 has a basket-like configuration that is framed by a housing, and has an opening 215a into which the tray T can be inserted.

  The seedling supply device 4 is arranged from the upper part of the planting part mission case 30 toward the front of the machine body, and the front side has a high seedling tray T containing a plurality of soil block seedlings S in the vertical and horizontal directions. The seedling tray moving device 40 that is placed and supported so as to be inclined and intermittently moved in the vertical and horizontal directions, and the seedling tray T that is disposed on the rear side of the seedling tray moving device 40 and that is disposed by the seedling extraction claw 41. A seedling collecting device 43 that takes out the seedlings one by one and transports them to the seedling planting tool 42.

  In addition, the seedling tray T is made of plastic that is thin and flexible, and has a large number of pot portions P arranged in a grid pattern at a predetermined pitch in the vertical and horizontal directions. The opening edge portions are connected to each other in a planar shape and molded. And the soil block seedling S is nurtured by sowing and raising seedlings in the floor soil filled in the pot portion P.

  The seedling device 43 includes the seedling extraction claw 41 and a claw driving mechanism 44 that drives the seedling extraction claw 41. The seedling extraction claw 41 is formed of a round bar with a pair of left and right tips, and is provided so as to be closer to each other on the tip side. The claw drive mechanism 44 reciprocates the seedling extraction claw 41 between the seedling tray T and the seedling planting tool 42 while changing the posture of the seedling extraction claw 41 and supports the pair of seedling extraction claws 41 attached thereto. A body 45, a claw guide 46 for guiding the advance and retreat of the pair of seedling extraction claws 41, and a support 47 for supporting the claw support 45 and the claw guide 46 so as to reciprocate in the longitudinal direction. .

  The claw driving mechanism 44 is attached and supported by a transmission case 50 attached to a support body 49 made of a plate material welded and fixed to a connecting frame 48 whose base is fixed to the main frame 14. The transmission case 50 is driven by a driving force transmitted by a transmission chain 53 from a lateral movement shaft 105 of a seedling tray moving device 40 to be described later to an input shaft 51 that protrudes to the left and right sides.

  A crank 57 is provided at the tip of the input shaft 51 that protrudes to the right side of the transmission case 50, and a crank pin 58 is provided on the crank 57 so as to protrude laterally. The input shaft 51 is coaxial with the crank 57. A drive cam 59 is provided. A lower portion of the swing arm 60 is pivotally connected to the lower left portion of the transmission case 50 via a swing shaft 61 so as to be rotatable around the left and right axes. A groove cam 62 extending in the arm longitudinal direction is formed, and a roller 63 externally fitted to the crank pin 58 of the crank 57 is inserted into and engaged with the groove cam 62.

  A support tool 47 is pivotally connected to the upper portion of the swing arm 60 via a pin 64, and this support tool 47 includes a cylindrical portion 47a through which a pipe claw support 45 is inserted and guided so as to be movable in the axial direction. The claw support 45 can be moved toward and away from the seedling tray T. Further, the pair of seedling extraction claws 41 that are pierced obliquely into the block soil of the seedling S in the pot portion P are attached to the tip of the claw support 45.

  A plate-like support member 65 is attached and fixed to the upper surface of the transmission case 50 by bolts, and a roller 67 is attached to the support 47 through a bracket 66 so as to be freely rotatable. Is engaged with a cam groove 70 formed in a guide plate 69 that is swingably mounted on the pin 68. The guide plate 69 has a rolling roller 71 at the tip of the downward projecting arm, and this rolling roller 71 is in contact with the driving cam 59, and the driving cam 59 rotates counterclockwise in FIG. Thus, the guide plate 69 can be swung around the pin 68. The guide plate 69 is urged in a direction in which the roller 71 is pressed against the drive cam 59 by a spring 72 interposed between the guide plate 69 and the support member 65.

  A coil that urges the nail support 45 in the direction of retreating between the base 73 provided at the base end portion of the nail support 45 and the cylindrical portion 47a of the support 47 that fits and holds the nail support 45. A spring 74 is interposed, and a claw attachment 75 is fitted and fixed to the front end portion of the claw support 45. The bases of the pair of seedling extraction claws 41 are pivotally supported by the claw attachments 75 via shafts 76, respectively, and the pair of seedling extraction claws 41 swings so that their tips move relative to the claw attachments 75. It is possible.

  An extrusion link 77 is pivotally connected to a lower end portion of the support tool 47 via a pin 78. A long groove 79 is formed at the tip of the push-out link 77 and is engaged with a pin 80 provided on the protruding arm of the claw attachment 75. The push-out link 77 is provided with a substantially arc-shaped cam plate 81 that can come into contact with the crank pin 58 of the crank 57. The claw guide body 46 is inserted into the claw support body 45, the base body 73 and the claw attachment 75 so as to be slidable in the longitudinal direction. The claw guide body 46 is formed of a round bar or the like, and a seedling is formed at the front end thereof. A guide portion 82 having a guide hole for inserting and guiding the take-out claw 41 is provided, an operation member 83 having an L-shape in side view is attached to the rear end, and a stopper 84 is fixed to the middle portion. A coil spring 85 is fitted between the base 73 and the base 73.

  An operating piece 86 is pivotally supported on the support 47 and is urged clockwise in FIG. 5 by a spring. The operating piece 86 has a substantially T-shape having one leg and both arms, A lock portion 86a is formed on one arm, a release portion 86b is formed on the other arm, and a pushing portion 86c is formed on the foot. The actuating member 83 fixed to the claw guide body 46 has a portion parallel to the claw guide body 46, and the parallel portion is guided to slide by a support tool 47 in a non-rotating state, and protrudes from the sliding surface. The movement of the claw guide body 46 in the protruding direction is restricted by engaging with the lock portion 86a of the operating piece 86.

  A lock arm 87 is pivotally supported on the base 73 at the rear end of the claw support 45. The lock arm 87 is urged clockwise by a spring in FIG. A flange 89 that can be engaged with the joint 88 is formed. In the above configuration, when the input shaft 51 rotates counterclockwise from the state shown in FIG. 5, the crank 57 rotates along with the roller 63 fitted to the crank pin 58 to push the cam plate 81 and push the link. 77 is swung to the seedling tray T side, whereby the claw attachment 75 and the claw support 45 are pushed toward the seedling tray T side with respect to the support 47 as shown in FIG. The springs 74 and 85 are compressed. Thereby, the seedling extraction claw 41 protrudes and pierces the block soil of the seedling S, and the restoring force for the claw support 45 to move backward is retained.

  When the seedling extraction claw 41 protrudes and pierces the block soil of the seedling S, the seedling extraction claw 41 is regulated by the guide hole of the guide portion 82, and the distance between the tips of the right and left seedling extraction claws 41 is narrowed. The seedling extraction claw 41 is configured to be stabbed into the block soil while being pushed. Further, the claw support 45 is protruded, and the state of the claw support 45 is maintained by engaging the hook portion 89 of the lock arm 87 with the engaging portion 88 of the support 47, and the swing arm 60 and the guide plate 69 swing. do not do.

  From this state, when the input shaft 51 further rotates counterclockwise, the roller 63 slides in the groove cam 62 of the swing arm 60 so that the swing arm 60 moves away from the seedling tray T around the swing shaft 61. The seedling extraction claw 41 is moved backward with respect to the seedling tray T together with the claw support body 45, the claw guide body 46 and the support tool 47, and the block soil of the seedling S is taken out from the pot portion P.

  Thereafter, when the input shaft 51 further rotates counterclockwise, the seedling extraction claw 41 moves in a direction away from the seedling tray T together with the claw support body 45, the claw guide body 46, and the support tool 47, and the roller 67 moves to the cam groove. The seedling extraction claw 41 and the like are changed to a substantially downward posture by sliding the front upwardly shaped portion 70, and the seedling S is placed in a downward posture, and the seedling S is positioned above the front portion of the seedling planting tool 42.

  When the seedling picking claw 41 has moved to a substantially downward posture, the pushing portion 86c of the operating piece 86 comes into contact with a lock releasing member provided on the support member 65 so that the position thereof can be adjusted. When the operating piece 86 is rotated, the lock on the operating member 83 by the lock portion 86 a of the operating piece 86 is first released, and the claw guide body 46 protrudes by the urging force of the spring 85 and is held by the seedling extraction claw 41. The seedling S that is present is pushed out of the seedling extraction claw 41 and separated, and dropped into the seedling planting tool 42 from above. Thereafter, when the operating piece 86 further rotates, the lock arm 87 is pushed up by the release portion 86b to release the engagement between the flange portion 89 and the engagement portion 88, and the claw guide body 46 is accompanied by the biasing force of the coil spring 74. As a result, the nail support 45 moves backward.

After that, the input shaft 51 is moved to the state shown in FIG. 5 by the counterclockwise rotation of FIG. 5 and the above operation is repeated.
The seedling tray moving device 40 includes a seedling mounting base 90 on which the seedling tray T is placed. The seedling mounting base 90 is movable in a left-right direction on a pair of upper and lower guide rails 91a and 91b arranged in the left-right direction. It is supported. The pair of upper and lower guide rails 91 a and 91 b are fixedly supported by the planting part mission case 30. The left and right ends of the pair of upper and lower guide rails 91a and 91b are connected by a left and right saddle frame 95, and have a rectangular frame shape with high strength in plan view.

  Further, the seedling mounting table 90 has a mounting plate 96 that supports the bottom of the seedling tray T across the horizontal row of pot portions P (therefore, the upper surface of the mounting plate 96 supports and supports the seedling tray T). The mounting plate 96 is disposed between a pair of side plates 97 that are opposed to each other in the left-right direction, and the left and right end portions of the mounting plate 96 are opposed surfaces of the left and right side plates 97 ( It is fixed to the inner surface in the left-right direction).

  A vertical movement drive shaft 98 is disposed in the left-right direction at the lower part between the left and right plates 97, and a vertical movement driven shaft 99 is disposed in the left-right direction at the upper part between the left and right side plates 97. A pair of left and right drive sprockets 100 are fixed to the drive shaft 98, and a pair of left and right driven sprockets 101 are fixed to the driven shaft 99. Further, an endless chain 102 is hung between the drive sprocket 100 and the driven sprocket 101, and the gap between the pot portions P in the vertical direction (vertical direction) of the seedling tray T is attached to the chain 102. A conveying pin 103 that engages with the right and left is attached in an inward protruding manner in the left-right direction. Accordingly, the drive shaft 98 is driven to rotate in the direction indicated by arrow A in FIG. 9, whereby the seedling tray T is pushed by the transport pins 103 to be vertically movable. The left and right side plates 97 are connected by other connecting members in addition to the longitudinal movement drive shaft 98 and the driven shaft 99.

  In the seedling tray moving device 40, the vertical and horizontal dimensions of the seedling tray T are the same and the openings of the pot portions P are different, but the intervals between the openings of the pot portions P are substantially the same (that is, in the vertical and horizontal arrangement directions). Two kinds of seedling trays T (with different pitches between the centers of the pot parts P and the number of pot parts P) are mounted. Therefore, the transport pin 103 is engaged with each between the pot parts P. Instead, the gap between the vertical pot portions P of the two kinds of seedling trays T is provided at a position where they coincide with each other in the vertical direction.

  Here, the lateral movement mechanism of the seedling tray T will be described. The left and right side plates 97 pass between the left and right bearing members 104 that are arranged on both the left and right sides of the seedling mount 90 and are attached to and supported by the left and right heel frames 95. A lateral movement shaft 105 formed with a special screw (napier screw) formed by joining the valleys of the left and right screws cut at a pitch is supported so as to be rotatable about the left and right axis. The lateral movement shaft 105 has a special screw on the axis. A slider 106 that engages with is externally fitted. The slider 106 is engaged with a pair of left and right engaging pieces 107 provided on the back surface of the mounting plate 96 of the seedling mounting table 90.

  Power is transmitted to the lateral movement shaft 105 from the planting part mission case 30 via the winding transmission mechanism 108a in the transmission case 108, and the lateral movement shaft 105 is intermittently driven to rotate. Is intermittently rotated, the slider 106 is intermittently moved in the left-right direction and folded back at the end of the screw formed on the lateral movement shaft 105 so that the seedling stage 90 is reciprocated in the left-right direction. It has become. A seedling stage drive system is configured by the winding transmission mechanism 108 a in the transmission case 108.

  The horizontal movement shaft 105 is stopped when the seedling S is taken out from the pot part P by the seedling picking claw 41, and rotates after the seedling S is taken out from the pot part P. It is configured to intermittently rotate so as to move the seedling mounting table 90 by one pitch in the arrangement direction (left-right direction). It should be noted that the lateral movement amount can be switched in the transmission case 50 so that the lateral movement amount corresponding to the pitch in the lateral direction of the pot portion P of the two kinds of seedling trays T used selectively can be selected. .

  Next, the vertical movement mechanism of the seedling tray T will be described. The vertical movement cams 109 are fixed to the left and right sides of the horizontal movement shaft 105, and the vertical movement operation shaft 110 is freely rotatable between the left and right side plates 97 on the seedling stage 90. The vertical movement operating shaft 110 is provided with a pair of left and right followers 111 that engage with the vertical movement cam 109 when the seedling stage 90 moves to the leftmost end or the rightmost end. Further, the longitudinal movement operating shaft 110 is interlocked and coupled to a longitudinal movement means 113 provided on the left end side of the longitudinal movement drive shaft 98 via a link 112 or the like.

  When the seedling stage 90 moves to the left and right ends, the follower 111 is pushed by the longitudinal movement cam 109 to rotate the longitudinal movement operation shaft 110 and the longitudinal movement means 113 is operated via the link 112. The vertical movement drive shaft 98 is rotated so as to transfer the seedling tray T by one pitch of the pot portion P in the vertical arrangement direction of the pot portion P (the arrangement direction orthogonal to the left-right direction).

  Thus, when the removal of the soil block seedling S from the horizontal row of pot portions P is completed, the seedling tray T is moved vertically by an amount corresponding to the vertical interval of the pot portions P. The portion of the seedling tray T after the seedling S is taken out is folded back to the lower surface side of the mounting plate 96 along the drive sprocket 100. As shown in FIGS. Under the base 90, the plate member is formed in an arc shape centering on the axis of the longitudinally moving drive shaft 98, and guide members 114 for guiding the seedling tray T along the drive sprocket 100 are provided on the left and right ends. And fixedly attached to the central portion.

  The guide members 114 on both the left and right sides respectively hold down the left and right edge sides of the top surface of the seedling tray T to prevent the bottom of the pot portion P of the seedling tray T from moving (lifting) away from the placement plate 96. A member 115 is provided. The holding member 115 is formed by bending an elastically deformable steel bar, the base side 115a is fixedly attached to the guide member 114, and the midway part is in contact with the upper surface of the seedling tray T and elastically presses it. However, the tip side is configured to be separated from the seedling tray T.

  A restricting means 116 for restricting the movement in the direction away from the placement surface 96a of the seedling tray T is disposed on the front side of the left and right pressing members 115 in the vertical movement direction of the seedling tray T. The regulating means 116 is formed by bending an elastically deformable steel bar, the midway portion is a pressing portion 116a that contacts the upper left and right side edges of the seedling tray T, and the one end side serves as the pressing portion 116a. The mounting portion 116b is attached to the side plate 97 so as to be elastically pressed to the T side, and the other end side is a knob portion 116c formed in an arch shape.

  The attachment portion 116b is rotatably attached to the side plate 97 by a bolt 93, and a restricting posture for restricting movement of the pressing portion 116a in a direction away from the placement surface 96a of the seedling tray T (FIGS. 9 to 12). (See the solid line) to grip the knob portion 116c, pull up the holding portion 116a, and rotate the restricting means 116 outward in the left-right direction around the attachment portion 116b, so that the seedling tray T is placed on the placement plate 96. The restricting means 116 can freely change its posture to a retracted posture (indicated by a virtual line in FIG. 12) that can be placed from the vertical direction.

  The mounting plate 96 of the seedling mounting table 90 is provided with a detecting means 117 for detecting the passage of the seedling tray T in the vicinity of the right side (or left side) regulating means 116. The detection means 117 includes a contact member 118 that contacts the bottom of the pot portion P on the right end side of the seedling tray T, a biasing member 119 that biases the contact member 118 toward the pot portion P, and a micro And a contact sensor 120 such as a switch.

  The contact member 118 is supported by a support member 121 whose front side in the vertical movement direction of the seedling tray is fixed to the lower surface side of the placement plate 96 so as to be rotatable around the left and right axes via a support shaft 122. Through the opening 123 formed in 96, it is possible to project to the placement surface 96 a side of the placement plate 96 so as to be freely retractable. The contact member 118 is in contact with the lower surface of the mounting plate 96 and has a stopper 124 that restricts the rotation of the contact member 118 in the protruding direction (the direction protruding from the opening 123 toward the seedling tray T). It is fixed and provided.

  The urging member 119 is formed of a spring plate or the like, the front side in the seedling tray vertical movement direction is fixed to the support member 121, and the front side in the seedling tray vertical movement direction is in contact with the lower surface of the contact member 118, The contact member 118 is urged in the protruding direction by an elastic force. The contact sensor 120 is fixedly attached to the support member 121, and the contact 120 a is in contact with the middle portion of the biasing member 119.

  Accordingly, the contact member 118 is pressed by the pot portion P and retracted to the lower surface side of the mounting plate 96 while the seedling tray T is passing over the detection means 117 as indicated by a virtual line in FIG. Then, the contact 120a of the contact sensor 120 is pressed via the biasing means 119, and the presence of the seedling tray T is detected. Then, as shown by the solid line in FIG. 9, when the seedling tray T passes over the detection means 117, the last pot portion P is separated from the contact member 118, and the contact member 118 is placed by the urging member 119. While projecting to the surface 96a side, the pressing of the contact 120a of the contact sensor 120 is released, and it is detected that the seedling tray T is separated from the detection means 117, that is, the passage of the seedling tray T.

  When the detection means 117 detects the passage of the seedling tray T, the detection means is operated to notify the operator that the seedling tray T has to be replenished by operating a notifying means including a buzzer and a lamp. Further, in the example shown in FIG. 9, when the second pot part P from the rear of the pot part P in the longitudinal arrangement direction comes to the seedling extraction position by the seedling extraction claw 41, the detection means 117 is placed on the seedling tray T. Although the passage is detected and the seedling tray T is replenished, the passage of the seedling tray T may be detected on the front side of the pot portion P in the longitudinal arrangement direction.

  When the operator knows that the seedling tray T has passed the detection means 117 by the operation of the notification means, the operator changes the posture of the right and left regulating means 116 to the retracted position and places the seedling tray T on the placement plate 96. After the replenishment, the left and right regulating means 116 are returned to the regulating posture. As described above, since the detection unit 117 is provided in the vicinity of the regulation unit 116, it is possible to prevent malfunction of the detection unit 117 due to the raising of the seedling tray T. Therefore, the place where the detection unit 117 is provided may be anywhere as long as the lifting of the seedling tray T can be regulated by the regulation unit 117.

  The regulating means 116 may regulate the lifting of the seedling tray T just by contacting the seedling tray T without pressing the left and right side edges of the top surface of the seedling tray T, and the contact member 118 can be used as the seedling tray. You may make it contact the upper wall of T (part which connects the opening edge of the pot part P) lower surface. Further, as the detecting means 117, a contact of a contact sensor such as a micro switch or a limit switch may be directly brought into contact with the seedling tray T or the contact member 118.

  The seedling planting device 5 includes a cup-shaped seedling planting tool 42 having a sharp lower end. The seedling planting tool 42 includes a front side member 42a and a rear side member 42b, and left and right front side member attachments rotatably supported by a front member rotating shaft 161A located behind the seedling planting tool 42. The front member 42a is integrally attached to the arm 162A, and the rear member 42b is attached to the left and right rear member attachment arms 162B that are rotatably supported by the rear member rotation shaft 161B located in front of the seedling planting tool 42. It is attached integrally. Therefore, when both members 42a and 42b rotate with the rotation shafts 161A and 161B as fulcrums, the lower portion of the seedling planting tool 42 opens and closes. The front member 42a and the rear member 42b rotate in conjunction with each other by an interlocking pin 163 loosely fitted in a slot formed in the front member mounting arm 162A and the rear member mounting arm 162B. Between the leg 162aA of the front member mounting arm 162A and the leg 162aB of the rear member mounting arm 162B, a spring 164 that urges the front member 42a and the rear member 42b to close is stretched. The seedling planting tool 42 performs a predetermined operation by the following operation mechanism.

  A rear link support arm 167A is rotatably attached to a support portion 33a protruding upward from the second planting transmission case 32, and a base member is pivotally attached to the support arm 167A. The moving shaft 161A is connected. A rear link drive arm 169A provided at the rear end of the second planting transmission case 32 is connected to an intermediate portion of the rear link 168A. Further, a front link support arm 167B is rotatably attached to the planting part mission case 30, and a rear member rotation shaft 161B is connected to the rear end of the front link 168B whose base is pivotally attached to the support arm. Yes. A front link drive arm 169B provided at a rear end portion of the first planting transmission case 31 is connected to an intermediate portion of the front link 168B. When both the drive arms 169A and 169B are driven and rotated, the rear link 168A and the front link 168B swing up and down while changing the position of the base portion back and forth, and the seedling planting tool 42 moves up and down while maintaining a fixed posture.

  An opening / closing arm 171 is rotatably attached to the base portion of the rear link 168A, and the distal end portion of the opening / closing arm 171 and the front side member attachment arm 162A are connected by an opening / closing rod 172. An opening / closing cam 173 that rotates integrally with the rear link drive arm 169A is attached to an intermediate portion of the rear link 168A. A roller 174 as a cam follower of the opening / closing cam is provided on the opening / closing arm 171. The opening / closing cam 173 engages with the roller 174 in a stroke in which the seedling planting tool 42 is lifted from a position near the bottom dead center. When the opening / closing cam 173 is engaged with the roller 174, the opening / closing rod 172 is pulled, the front member 42a and the rear member 42b are rotated in conjunction with each other, and the seedling planting tool 42 is opened. When the opening / closing cam 173 does not engage the roller 174, the seedling planting tool 42 is closed by the tension of the spring 164.

  When the seedling planting tool 42 is at the top dead center, the seedling supply device 4 drops and supplies the seedling. The supplied seedling is guided into the seedling planting tool through a cylindrical seedling guide 176 attached to the front member rotating shaft 161A and the rear member rotating shaft 161B. The seedling planting tool 42 holding the seedling descends, and at the bottom dead center, the lower part of the seedling planting tool 42 pierces the topsoil portion of the cocoon to form a seedling transplanting hole. Almost simultaneously with this, the seedling planting tool 42 opens, and the held seedling is opened into the seedling transplanting hole. The seedling planting tool 42 rises as it is, and when it rises to near the top dead center, the seedling planting tool 42 is closed.

  In addition, power is transmitted from the planting part mission case 30 through the winding transmission mechanism 108a in the transmission case 108, and the seedling tray moving device 40 and the seedling collecting device 43 are driven. A clutch is provided at a site where power is transmitted from the transmission case 30 to the wrapping transmission mechanism 108a, and the clutch is disengaged by an automatic transplant stop lever 250 disposed on the operation panel 202. Only 43 can be stopped.

  220 is a turntable in which a plurality (eight in the embodiment) seedling supply cups 221... Are arranged on the circumference at equal intervals. The turntable 220 is placed in the seedling supply cup 221 at the center of the left and right sides of the machine body. The position at which the seedlings are released is arranged so as to be immediately above the seedling planting tool 42. The turntable 220 is rotatably provided on a support plate 222 whose base is fixed to the main frame 14 with the central shaft 223 as a fulcrum. The central shaft 223 is a drive shaft for the electric motor 224. Then, the electric motor 224 is driven and controlled, and the turntable 220 rotates intermittently by the attachment interval of the seedling supply cups 221 in synchronization with the operation of the seedling planting tool 42.

  The seedling supply cups 221 communicate with each other vertically, and a shutter 225 that can be freely opened and closed is attached to the bottom thereof. Directly below the seedling supply cups 221... Are provided with a C-shaped shutter closing rod 226 whose front center is cut in plan view. For this reason, the shutter 225 of the seedling supply cup 221 at the seedling supply position P (immediately above the seedling planting tool 42) corresponding to the cut-out portion of the C-shape is opened by a spring biased toward the opening side. The shutters 225 of the seedling supply cups 221 at the position are closed by being restricted by the shutter closing rod 226.

  Therefore, the seedlings taken out from the tray T by the seedling picking claws 41 are released into the seedling supply cup 221 in which the shutter 225 of the turntable 220 is opened, and the seedlings pass through the seedling supply cup 221 and are seeded. Dropped into the tool 42. Then, the seedling planting tool 42 transplants the seedling into the cocoon, and thereafter, the following pair of left and right pressing wheels 180 gently press the left and right side portions of the seedling.

  A pair of left and right pressure-reducing wheels 180 are disposed behind the seedling planting position. The left and right pressure-reducing wheels 180 are rotatably mounted in the middle of a swing frame 187 that is swingably supported by a support frame 186 fixed to the front and rear intermediate portion of the main frame 14. A rod 188 extends upward from the center of the left and right of the rear end portion of the swing frame 187, and the upper end portion of the rod 188 has a base portion fixed to the rear end portion of the main frame 14. The support arm 189 is supported through the through hole 189a. The rod 188 is provided with a weight 190 penetrating through the rod 188. By adjusting the number of the weights 190, the pressure reducing load of the left and right pressure reducing wheels 180 can be adjusted. Reference numeral 191 denotes a hairpin that prevents the rod 188 from coming out of the through hole 189a of the support arm 189.

  The left and right pressure wheels 180 are attached obliquely so that the distance between them is narrower toward the lower part, rolls on the heel surface as the aircraft advances, and removes the soil around the seedling transplant hole after the seedling has been planted. It collapses to refill the hole and lightly crushes the trace. Reference numeral 192 denotes a sensor for detecting the upper surface of the eaves. When the sensor 192 rotates up and down, the link mechanism 193 transmits the rotation to the up and down control valve 20a, and the angle of the sensor 192 returns to the original direction. Is activated. Thereby, the aircraft is controlled to move up and down so that the height from the upper surface of the cocoon to the aircraft is kept constant, and the planting depth of the seedlings is always controlled regardless of the change in the height of the cocoon, The growth of seedlings after planting is good.

The sensor 192 is pivotally supported by a shaft 196 on an arm 195 whose rear end is fixed to a pivot shaft 194 pivotally supported on the left side of the main frame 14 and whose front end extends forward. Has been. The rotation shaft 194 is connected to the base of the planting depth adjustment lever 197. When the planting depth adjustment lever 197 is engaged and locked with the adjustment engagement portion of the engagement guide 198, the rotation shaft 194 is fixed. The rotation of the rotation shaft 194 is fixed, so that the vertical height of the shaft 196 of the arm 195 is fixed. Therefore, the sensor 192 rotates around the shaft 196 while sliding on the top surface of the arm 195, Thus, the planting depth of the seedling is controlled to be constant regardless of the height change of the cocoon. Then, by adjusting the position of the planting depth adjustment lever 197 with respect to the adjustment engagement portion of the engagement guide 198 and engaging and locking it, the vertical height position of the shaft 196 of the arm 195 is set. Since it can be adjusted, the planting depth of the seedling can be adjusted because the reference position for controlling the height of the aircraft relative to the cocoon can be freely set.

  The right / left tilt control valve 20b in the hydraulic valve unit 20 is switched in conjunction with the movement of the left / right tilt detection pendulum 200. When the fuselage is tilted to the left and right, the rolling cylinder 27 is actuated appropriately to Control to return to left and right horizontally. The steering handle 6 is substantially U-shaped in plan view with both ends extending rearward, and left and right grips 6a are attached to both ends. When turning or traveling on the road, the operator holds the left and right grips 6a to operate.

  Left and right side clutch levers 201 are respectively provided below the left and right grips 6a. In addition, an operation panel 202 is provided at the base of the steering handle 6, and a planting clutch for turning on / off a planting clutch that is transmitted to the seedling supply device 4 and the seedling planting device 5 and an operation for raising and lowering the machine body are provided on the operation panel. A lift lever 203, a main clutch lever 204 for turning on and off the main clutch, and the like are provided. Reference numeral 205 in the figure denotes an inter-strain adjustment lever for adjusting the seedling planting interval.

Here, the configuration of the spare seedling stage 36 will be described. As described above, the preliminary seedling stage 36 on which the tray T is placed on the frame 34 having the base fixed to the upper part of the main frame 14 is attached. The stage 36 is inclined so as to be lower toward the front in a side view, and is arranged on the front and right sides of the turntable 220 in a plan view (that is, a reserve seedling is located above the turntable 220. The configuration without the mounting stand 36). Therefore, since the preliminary seedling stage 36 is inclined and arranged so as to be lower toward the front in a side view, an operator sitting on the work seat 212 can easily seed the seedling tray into which the seedling has entered from the preliminary seedling stage 36. T can be taken out and supplied to the seedling stage 90 of the seedling tray moving device 40, and the working efficiency is good. Also, the empty tray T discharged from the lower side of the seedling tray moving device 40 toward the front of the machine body is taken out by an operator seated on the work seat 212 and placed in the empty tray storage portion 215 arranged in front of the work seat 212. It can be stored immediately and work efficiency is good.

  In addition, a transparent resin seedling stand cover 300 and a seedling device cover 301 are provided at a position covering the upper portion of the seedling stand 90 and a position covering the upper portion of the seedling device 43, respectively. It is configured to allow seedling transplanting work even when That is, the seedling tray cover 300 and the seedling device cover 301 cause the seedlings on the seedling tray T placed on the seedling platform 90 to get wet and cause seedling removal failure in the seedling device 43. In addition, it is possible to avoid a situation in which the seedling taken out by the seedling collecting device 43 gets wet and the seedling falls off the seedling collecting device 43. Therefore, seedling transplanting work can be performed properly even in rainy weather.

  The operation | work which transplants a vegetable seedling to a farm field with said vegetable transplanter 1 is demonstrated. First, the seedling tray T on which vegetable seedlings have been grown is loaded on the seedling mounting table 90, and four seedling trays T are mounted on the preliminary seedling mounting table 36. Then, the operator sits on the work seat 212, operates the main clutch lever 204 to move the left and right front wheels 3 and the left and right rear wheels 2 along the ridges, and operates the planting lift lever 203. The transplanting operation is started by turning on the planting clutch and setting the airframe control mechanism to the control state. At this time, the seedling picking claws 41 take out seedlings one by one from the seedling tray T of the seedling mounting table 90 that reciprocates left and right, and discharge them into the seedling supply cup 221 in which the shutter 225 of the turntable 220 is opened. The seedling passes through the seedling supply cup 221 and is dropped and supplied into the seedling planting tool 42. Then, after the seedling planting tool 42 has planted the seedling in the cocoon, the pair of left and right pressing wheels 180 lightly pressurizes the left and right sides of the seedling. During this transplantation operation, the operator gets on the machine body and sits on the work seat 212 and faces the seedling stage 90 at the rear of the machine body.

  Then, while confirming the seedling transplanting operation state of the planting unit 1b, when looking at the tray T placed on the seedling placing table 90 and determining that it is necessary to supply a new seedling tray T, The seedling tray T is taken out from the preliminary seedling mounting table 36 and is supplied to the seedling mounting table 90 of the seedling tray moving device 40. At this time, since the operator is facing the planting part 1b, it is easy to check the seedling transplanting work state, and when a situation occurs in which the seedling transplanting work is not properly performed, immediately responds. Therefore, seedling transplanting work can be performed appropriately and efficiently. In addition, since the preliminary seedling stage 36 is arranged so as to be inclined lower toward the front in a side view, an operator sitting on the work seat 212 can easily seed the seedling tray in which the seedling has entered from the preliminary seedling stage 36. T can be taken out and supplied to the seedling stage 90 of the seedling tray moving device 40, and the working efficiency is good. Also, the empty tray T discharged from the lower side of the seedling tray moving device 40 toward the front of the machine body is taken out by an operator seated on the work seat 212 and placed in the empty tray storage portion 215 arranged in front of the work seat 212. It can be stored immediately and work efficiency is good.

Next, a transplanting operation when the above-described automatic transplanting operation cannot be performed with a large seedling or a seedling with poor growth will be described.
First, the automatic transplant stop lever 250 disposed on the operation panel 202 is operated to stop the driving of the seedling tray moving device 40 and the seedling collecting device 43. At this time, if the seedling stage 90 is stopped at the center of the left and right sides of the aircraft, the left and right balance of the aircraft is good and good running performance is exhibited, so that an appropriate seedling transplanting operation can be performed. And while the worker walks in the ridge groove behind the left rear wheel 2 at the rear of the machine body, the main clutch lever 204 is operated to move the left and right front wheels 3 and the left and right rear wheels 2 along the ridge groove and advance the machine body. The transplanting operation is performed by operating the planting lift lever 203 to engage the planting clutch and bring the machine control mechanism into a controlled state. At this time, the seedling tray moving device 40 and the seedling collecting device 43 are stopped, but the turntable 220 and the seedling planting tool 42 are operating, and the seedling tray on which the operator is placed on the preliminary seedling placing stand 36 is operated. A seedling is taken out from T and supplied to each seedling supply cup 221. When the seedling supply cup 221 containing seedlings moves to the seedling supply position P due to the rotation of the turntable 220, the shutter 52 opens and the seedlings fall into the seedling planting tool 42. Then, the seedling planting tool 42 transplants the seedling into the cocoon, and thereafter, the following pair of left and right pressing wheels 180 gently press the left and right side portions of the seedling.

  Therefore, even when the above-described automatic transplanting operation cannot be performed due to a large seedling or a seedling that does not grow well, even if the worker supplies the seedling to the turntable 220, a large seedling or a seedling that does not grow well can be planted.

  In addition, although the example which stops the seedling tray moving apparatus 40 completely was shown in the said Example, only the drive which vertically feeds the seedling tray T of the seedling tray moving apparatus 40 was actuated, and the seedling mounting base 90 was made into the body. The operator may stop at the left end position, supply the seedling tray T to the seedling mounting table 90, and the operator may sequentially take out the seedlings on the seedling mounting table 90 that are vertically fed and supply them to the turntable 220.

  FIG. 17 shows another example of the seedling planting tool 42. In the above-described embodiment, the seedling planting tool 42 is opened and closed in the front-rear direction. However, in this example, the seedling planting tool 42 is an example in which the seedling planting tool 42 is opened in the left-right direction in the aircraft traveling direction. Vertical slit-like through holes 42c are provided on the left and right side wall surfaces of the left member 42a and the right member 42b. If the seedling planting tool 42 is configured to open in the left and right direction in the aircraft traveling direction in this manner, the resistance of the soil when the seedling planting tool 42 is opened is reduced, and the seedling planted when the aircraft is moving forward is reduced. It is possible to prevent the seedling planting tool 42 from being caught when it is pulled out from the soil, and further, an appropriate seedling transplanting operation can be performed. However, when the seedling planting tool 42 is opened in the left-right direction, the soil is blown to the left and right, and there is a problem that the amount of soil covering of the planted seedling is reduced. Therefore, as described above, when the vertical slit-like through holes 42c are provided on the lower side wall surfaces of the left side member 42a and the right side member 42b, the soil is planted from the slit-like through holes 42c when opened to the left and right. It is possible to avoid a situation in which the amount of the covering soil is reduced by entering the inside 42. Further, since the vertical slit-like through holes 42c are formed, when the seedlings fall and are supplied from above into the seedling planting tool 42, even if the falling seedlings come into contact with the through holes 42c. Since the hole 42c has a vertical slit shape, the posture of the seedling is prevented from being disturbed, and the planting posture of the seedling is good.

  FIG. 18 shows still another example of the seedling planting tool 42. In the above embodiment, the example in which the vertical slit-like through holes 42c are provided on the lower left and right side wall surfaces of the left side member 42a and the right side member 42b of the seedling planting tool 42 is shown. A through-hole 42d is provided. The horizontal slit-like through holes 42c are formed as long through holes in the upper side. When the horizontal slit-shaped through-holes 42d of such a configuration are used, when the depth of seedling planting is changed by changing the planting depth of the seedling, the seedling according to the depth is changed. The amount of soil entering the planting tool 42 automatically becomes an appropriate amount (the deeper the deeper the through hole 42d is, the longer the side will enter the soil). Become.

  FIG. 19 shows still another example of the seedling planting tool 42. In the above embodiment, an example in which vertical or horizontal slit-like through holes 42c, 42d,... Are provided on the lower left and right side wall surfaces of the left member 42a and the right member 42b of the seedling planting tool 42 has been described. Then, through holes (notches) 42e and 42e that are long in the vertical direction are provided on the lower front side wall surfaces of the left side member 42a and the right side member 42b. When the through holes (notches) 42e and 42e that are long in the vertical direction are provided on the front side in the forward direction of the aircraft, the seedlings that are planted when the aircraft advances are caught when the seedling planting tool 42 is extracted from the soil. It is possible to prevent more appropriately, and soil enters the seedling planting tool 42 from the through holes (notches) 42e and 42e that are long in the vertical direction, so that appropriate soil covering can be performed and the seedling planting posture is good. Become. The through holes (notches) 42e and 42e that are long in the vertical direction may be provided on both the lower front side wall surface and the rear side wall surface of the left side member 42a and the right side member 42b. When both are provided, the amount of soil entering the seedling planting tool 42 is increased, and more appropriate soil covering can be performed to improve the seedling planting posture.

  FIG. 20 shows another example of the left and right rear wheels 2. In the above-described embodiment, an example is shown in which the left and right rear wheels 2 that are driving traveling wheels are pivotally supported one by one on the front end portion of the left and right traveling transmission case 16. The rear wheels 2 and 2 are pivotally supported and driven by separate drive chains 16a and 16b respectively provided in the traveling transmission case 16, and two rear wheels 2 and 2 are provided at the front ends of the left and right traveling transmission cases 16, respectively. It has a four-wheel configuration that supports two. In addition, the rear wheels 2 and 2 provided on the left and right sides of the traveling transmission case 16 are inclined in a letter C shape when viewed from the rear so that the space between the lower portions is narrow. The lateral displacement of the wheels 2 can be appropriately prevented, the heel following performance is improved, and seedlings can be appropriately planted in the heel.

  In addition, in the said Example, although the operation example transplanted to a cocoon was shown, it is the same also when transplanting a seedling to a flat agricultural field. In addition, examples of vegetable seedlings include leaf vegetable seedlings such as cabbage and Chinese cabbage, root vegetable seedlings such as radish and sweet potato, and fruit vegetable seedlings such as Nanban and Saiban. But it ’s okay.

It is the whole vegetable transplanter side view. It is a whole top view of a vegetable transplanter. It is a perspective view of the connection part of a driving | running | working part and a planting part. It is a perspective view of the sensor 192 part. It is a right view of 43 parts of seedling device. It is a top view of 43 parts of seedling device. 3 is a plan view of a seedling stage 90. FIG. It is a plane sectional view of a seedling tray moving device part. It is side surface sectional drawing by which the seedling mounting stand 90 is effect | action description. It is an operation explanatory plan view of the seedling stage 90. FIG. 6 is a front sectional view for explaining the operation of the seedling table 90. FIG. 10 is a perspective view for explaining the operation of the regulating means 116. It is a bottom view of a turntable. It is a hydraulic circuit diagram. It is a side view of the seedling planting device. It is a top view of the seedling planting apparatus 5. It is a side view which shows the other example of a seedling planting tool. It is a side view which shows the other example of a seedling planting tool. It is a front view which shows the other example of a seedling planting tool. It is a rear view which shows the other example of a rear wheel.

1 Seedling transplanter (vegetable transplanter)
DESCRIPTION OF SYMBOLS 1a Traveling part 1b Planting part 2 Left and right rear wheel 3 Left and right front wheel 4 Seedling supply device 5 Seedling planting device 6 Steering handle 36 Preliminary seedling stage 42 Seedling planting tool 43 Seedling device 90 Seedling stage 212 Seat 215 Empty tray storage Part 220 turntable 221 seedling supply cup 250 automatic transplant stop lever T seedling tray

Claims (3)

A planting part (1b) having a seedling supply device (4) and a seedling planting device (5) is provided at the rear of the traveling unit (1a) having the front wheel (3) and the rear wheel (2) , and the traveling unit (1a) A main frame (14) that extends rearward from the rear and curves obliquely upward and extends to the rear of the planting part (1b) is provided, and a steering handle (6) is provided at the rear end of the main frame (14) that is the rear part of the aircraft. In the seedling transplanting machine provided with a seedling feeding device (4), the seedling feeding device (4) is provided with a seedling tray moving device (40) that intermittently moves in the vertical direction and the horizontal direction, and the seedling tray moving device (40) is provided with a seedling mount (90 ) was placed in the state and the front high rear lower at the rear upper running portion (1a), seedling mounting table (seedling planting and taken out one by one seedling from seedling tray placed (T) 90) Seedling device (43) and seedling planting device (5) for feeding seedling planting tool (42) of device (5) (4) as well as arranged on the machine body rearwardly of, seedling planting device (42) is a structure that opens in the left-right direction with the left side member (42a) and a right member (42b), the slit-shaped through holes extending in the longitudinal direction (42d) are arranged in a vertical direction, the upper slit-like through hole (42d) is configured to be long in the front and rear, and a preliminary seedling support frame (34) having a base fixed to the upper part of the main frame (14) is provided, The front seedling stand (36) is supported by the preliminary seedling stand support frame (34) in an inclined position that is lower at the upper position and forward of the seedling stand (90), and extends forward of the machine body (210). And a seat support frame (211) extending upward from the front frame (210) is provided, and an operator attaches the planting portion (1b) to the upper portion of the seat support frame (211) which is the front portion of the traveling portion (1a). Facing Sits Sit down (212) is provided, the empty tray storage section (215) seedling transplanter, characterized in that provided in support of the front seat (212) by the upper portion of the seat support frame (211). A plurality of seedling supply cups (221...) Operating in synchronism with the seedling planting tool (42) between the seedling harvesting device (43) and the seedling planting tool (42) of the seedling planting apparatus (5). A turntable (220) is provided to allow intermittent movement of the seedling tray moving device (40) in the vertical direction but stop intermittent movement of the seedling tray moving device (40) in the horizontal direction and The seedling transplanter according to claim 1, further comprising an automatic transplant stop lever (250) for stopping the operation of the device (43) . Rear wheels (2) are provided on the left and right sides of each of the left and right traveling transmission cases (16) so that the rear wheels (2) have four wheels, and the rear wheels (2) on both the left and right sides of the traveling transmission case (16) The seedling device (43) and the seedling planting device are configured so as to be inclined so that the distance between them becomes narrower and driven by each of the separate drive chains (16a, 16b) provided in the traveling transmission case (16). A turntable (220) in which a plurality of seedling supply cups (221 ...) operating in synchronization with the seedling planting tool (42) is provided between the seedling planting tool (42) of (5). , seedling tray moving device longitudinally and intermittent movement and seedling device in the lateral direction (43) of claim 1, wherein in that a automatic population stop lever stopping (250) operation of the (40) Seedling transplanter.

Images