JP5526560B2 - Multi-row seedling transplanter - Google Patents

Description

  The present invention relates to a multiple-row planted seedling transplanting machine for planting multiple seedlings such as vegetables and flower buds in a field.

  As this kind of conventional example, a seedling transplanting machine is provided at the rear part of the riding type traveling vehicle body by a lifting link mechanism, and the seedling transplanting machine has a seedling transplanting unit including a seedling feeding device and a seedling planting device on the left and right. There is a riding type seedling transplanting machine that performs two-planting seedling transplanting work by arranging two sets in parallel.

Japanese Patent Laid-Open No. 10-174509

  However, the conventional riding seedling transplanting machine has a large body configuration, is not a small and compact simple configuration, and has problems in seedling supply work efficiency, body operability, and seedling planting performance.

According to the first aspect of the present invention, a planting part (1b) having a seedling supply device (4) and a seedling planting device (5) is provided in a traveling part (1a) having a front wheel (3) and a rear wheel (2). In the multi-row planted seedling transplanting machine, the seedling supply device (4) is arranged in a state where the front part is located above the rear part of the traveling part (1a) with the front part being high and the rear part being low, and the seedling mounting base (90 ) And a seedling collecting device (100) for taking out seedlings one by one from the seedling tray (T) placed on the seedling placing stand (90) and supplying them to the seedling planting tools (42) of a plurality of seedling planting devices (5) constituted by 43), the traveling unit (seat operator to the front of 1a) is seated (212) is provided, seedling planting device (5) capable of opening and closing a beak-like seedling planting device (42) said A forward / backward swing arm configured by a lift link mechanism (130) for driving the seedling planting tool (42) to lift and lower, and swinging the lift link mechanism (130) in the longitudinal direction of the machine body 134F / 134R) and upper and lower parallel arms (137U / 137D) swinging in the vertical direction of the machine, and the straight locus (H1) in which the seedling planting tool (42) operates linearly in the vertical direction is arranged at the top. The planting locus (A) is configured to operate, and the seedling receiving device (155) for receiving the seedling taken out by the seedling collecting device (43) and the seedling received by the seedling receiving device (155) are planted on the left side. A seedling branching tool comprising a left seedling shooter (156L) to be supplied to the tool (42) and a right seedling shooter (156R) to supply the seedling received by the seedling receiving tool (155) to the right seedling planting tool (42) (154), and the seedling receiver (155) has a left funnel portion (155L) on the left side of the partition wall (155a), a right funnel portion (155R) on the right side of the partition wall (155a), and The left funnel (155L) and right leakage The seedlings received by the left funnel part (155L) are guided to the left seedling shooter (156L), and the seedlings received by the right funnel part (155R) are guided to the right seedling shooter (156R). And the left seedling shooter (156L) and the right seedling shooter (156R) are each formed by a plurality of pipe members (156L ′, 156R ′) so as to be stretchable and contracted. This is a transplanter.

  Therefore, a single seedling supply device 4 can supply seedlings to a plurality of seedling planting devices 5 to perform a plurality of strip planting in the field, and the seedling planting work efficiency is high, and the configuration is simple, light and small. A seedling transplanter can be obtained.

Furthermore, the seedling mounting base 90 provided so as to be movable in the left-right direction of the seedling supply device 4 is arranged in a state where the front part is high and the rear part is low above the rear part of the traveling part 1a, and an operator sits on the front part of the traveling part 1a. Since the seat 212 is provided, the airframe configuration can be made small and compact.

Moreover, by providing the seat 212 on which the operator is seated at the front portion of the traveling unit 1a, the seedling transplanting state of the planting unit 1b can be easily confirmed, and the seedling transplanting operation is not performed properly. If a situation occurs, it can be dealt with immediately and seedling transplanting work can be performed appropriately and efficiently. Further, when the seedling tray T placed on the seedling stage 90 is viewed and it is determined that a new seedling tray T needs to be supplied, the new seedling tray T can be easily supplied to the seedling stage 90. Work efficiency is good.

In addition, since the seedling planting tool 42 is configured to operate by drawing a planting locus A having a linear locus portion H1 in which the seedling planting tool 42 linearly operates in the vertical direction, the upper locus in which the seedling planting tool 42 receives the seedling is a straight line. Thus, the seedling planting tool 42 can properly receive the seedling and prevent the seedling from failing.

Then , the seedling branching tool 154 can appropriately supply seedlings from one seedling supply device 4 to the plurality of seedling planting devices 5, so that a plurality of seedlings can be appropriately planted in the field. In addition, it is possible to cope with the case where the left and right seedling planting tools 42 are adjusted in the left and right positions to change the striations.

In the invention according to claim 2, the preliminary seedling stage (36) is disposed above the seedling stage (90), the empty tray storage part (215) is disposed behind the seat (212), and The multi-row planted seedling transplanter according to claim 1 , wherein a steering handle (6) is provided at a rear portion.

Therefore, in addition to the operation of the invention described in claim 1, the operator who is seated on the seat 212 easily takes out the seedling tray T containing seedlings from the preliminary seedling mounting table 36 and supplies it to the seedling mounting table 90. Work efficiency. In addition, the worker 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 the inside of the empty tray storage unit 215 disposed behind the work seat 212. Can be stored immediately, and work efficiency is good.

Further, 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 .

  By constructing a multi-row planting seedling transplanting machine as described above, the machine configuration can be reduced to a compact, compact and simple configuration, and a multi-row planting seedling transplanting machine with good working efficiency, machine operability and seedling planting performance And the problems of the invention can be solved appropriately.

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 front view for effect | action description of the seedling branch shooter 154 part. It is a hydraulic circuit diagram. It is a side view of the seedling planting device. It is a side view which shows the other example of the seedling planting apparatus.

  As an embodiment of the present invention, a two-row planted vegetable transplanter, which is 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 facing the front of the seat 212 at the time of seedling transplanting work, and confirms the seedling transplanting work status of the rear planting part 1b as necessary, and when the number of seedlings decreases, a new seedling is transferred from the spare seedling mounting stand 36. Is supplied to the planting part 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 transmitted from the traveling part mission case 7, and to the upper part of the planting part mission case 30. The base portion of the case 31 is fixed, and the base portions of the left and right second planting transmission cases 32 are fixed to the respective distal ends of the left and right first planting transmission cases 31. Each operation mechanism of the left and right second seedling planting device 5 to be described later is connected to the left and right second planting transmission case 32, and the right and left second planting transmission case 32 is used to plant the left and right seedling planting device 5. A drive transmission system D1 is configured. The left and right seedling planting tool 42, which will be described later on the left and right seedling planting device 5, is disposed on the rear side of the traveling unit 1a. Further, 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.

  An empty tray storage portion 215 that can store a plurality of trays T is disposed behind 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. And a seedling collecting device 43 for taking out seedlings one by one. The seedlings taken out from the seedling tray T by the seedling collecting device 43 are conveyed to the left and right seedling planting tools 42 via a seedling branching shooter 154 described later.

  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.

  Since this embodiment is a two-row planted vegetable transplanter, two seedling planting devices 5 are provided side by side. Since the left and right seedling planting device 5 is symmetrical and has the same configuration, the detailed configuration of the right seedling planting device 5 will be described as a representative. As shown in FIG. 15, the right seedling planting device 5 has a hook-shaped seedling planting tool 42 that can receive a seedling from an opening 42a formed in the upper portion and can be opened and closed left and right. It is comprised from the raising / lowering link mechanism 130 provided in the 2nd planting transmission case 32 which raises / lowers the planting tool 42. As shown in FIG.

  The elevating link mechanism 130 is pivotally supported by the second planting transmission case 32 so that the upper end thereof is pivotally supported by the upper front shaft 131F and the upper rear shaft 131R, and the lower end is rotated by the lower front shaft 132F and the lower rear shaft 132R. The front end of the front swing arm 134F and the rear swing arm 134R that are connected by the connection arm 133 so as to be movable in parallel in the front-rear direction, and the front end of the connection arm 133 is rotated by the upper shaft 135U and the lower rear shaft 132R. Vertically parallel arms 137U and 137D that are pivotally supported and whose rear ends are pivotally connected to a rotating upper shaft 136D and a rotating lower shaft 136D provided on the seedling planting tool 42, respectively (seedling planting tool 42 Is provided so as to be movable and adjustable in the axial direction of the rotating upper shaft 136U and the rotating lower shaft 136D, and by adjusting the movement in the axial direction, the position in the lateral direction of the machine body can be adjusted, It is possible to adjust the spacing between the attachments 42 and 42. And a drive crank arm 139 that rotates with a base portion fixed to a crank arm drive shaft 138 that protrudes from the second planting transmission case 32, and a rotation provided at the tip of the drive crank arm 139. A support arm 141 pivotally supported on the movable support shaft 140 and pivotally connected to a pivot shaft 142 provided at the front and rear center of the lower parallel arm 137D; The upper end is pivotally supported by a swinging drive cam 144 that is fixed and rotated by a swinging cam drive shaft 143 that protrudes from the planting transmission case 32 and a swinging support shaft 145 that is provided in the second planting transmission case 32. A swing link arm 148 in which a rotating roller 146 contacting the swing drive cam 144 is pivotally supported by a shaft 147 in the middle thereof, and a plurality of attachments provided vertically on the front swing arm 134F. Hole 49, a rotation roller 151 that is rotatably attached to the swing linkage arm 148, a support pin 152 provided on the second planting transmission case 32, and a front swing arm 134F. Provided between the lower end portion, the front and rear swing arms 134F and 134R are urged toward the front of the machine body, the swing drive cam 144 and the rotating roller 146 are brought into contact with each other, and the swing linkage arm 148 is rotated. It is constituted by a tension spring 153 that contacts the moving roller 151.

  The lower part of the seedling planting tool 42 is composed of a bowl-shaped left side member 42L and a right side member 42R, and the left side member 42L and the right side member 42R are closed to hold the seedlings in the inside, and the planting locus This is a general configuration in which seedlings are planted in the pod (farm field) by opening to the left and right at the lowest end of A.

  Next, by the operation of the lifting link mechanism 130, the lower end of the seedling planting tool 42 draws a planting locus A (static trajectory: a trajectory in a state in which the aircraft is stopped) and the seedling planting tool 42 picks seedlings (field). The effect of transplantation will be described.

  By the rotation of the swing drive cam 144, the swing linkage arm 148 swings back and forth via the rotation roller 146, and when the swing linkage arm 148 swings back and forth, the swing back and forth swing arm 134F. 134R swings back and forth. On the other hand, the upper and lower parallel arms 137U and 137D swing up and down via the support arm 141 by the rotation of the drive crank arm 139. Accordingly, since the front and rear swing arms 134F and 134R and the upper and lower parallel arms 137U and 137D are parallel link mechanisms, the seedling planting tool 42 maintains the posture in the vertical direction shown in the side view of FIG. It operates by drawing the planting locus A, so that the seedlings received in the seedling planting tool 42 can be planted in a proper posture on the culm (field).

  The seedling planting tool 42 is configured to move up and down with vertical parallel arms 137U and 137D that are parallel link mechanisms and to move back and forth with front and rear swing arms 134F and 134R that are parallel link mechanisms. The upper trajectory (the trajectory that moves downward from the upper end of the trajectory and the trajectory that moves upward toward the upper end of the trajectory) by which the attachment 42 receives the seedling can draw a straight trajectory portion H1 that operates vertically. Can be properly received and planting of seedlings can be prevented from failing, and seedlings can be properly planted in the straw (field). The lower locus for planting the seedling on the heel of the seedling planting tool 42 can draw a V-shaped locus portion H2 in a side view, and the moving locus when the aircraft is driven is a linear locus in the vertical direction. By doing so, seedlings can be properly planted in a beautiful posture on the vine (field).

  Furthermore, when the operating speed of the seedling planting tool 42 is changed with respect to the traveling speed of the machine body and the stock space is changed, the front and rear width H3 of the V-shaped trajectory part H2 is freely changed by changing the swing drive cam 144. It is possible to change the width to a front and rear width H3 suitable for the change between the stocks, and even if the change is made between the stocks, appropriate seedling can be planted.

  The front / rear swing arm can also be changed by changing the mounting position of the rotation roller 151 in contact with the swing linkage arm 148 with respect to a plurality of mounting holes 149 provided in the vertical direction on the front swing arm 134F. Since the front-rear operation amount by 134F / 134R can be changed, the front-rear width H3 of the V-shaped trajectory part H2 can be freely changed, and the operation speed of the seedling planting tool 42 with respect to the traveling speed of the aircraft can be changed. Can be made to have a front-rear width H3 suitable for the change between the stocks, and appropriate seedling can be planted even if the stocks are changed.

The swing drive cam 144 does not directly operate the front and rear swing arms 134F and 134R, but operates the front and rear swing arms 134F and 134R via the swing linkage arm 148. Even when the mounting position is changed vertically with respect to the plurality of mounting holes 149 provided in the vertical direction on the front swing arm 134F, the timing at which the swing drive cam 144 operates the front and rear swing arms 134F and 134R can be changed. In addition, since only the front-rear width H3 can be changed while maintaining an appropriate planting locus, seedling planting can be performed appropriately.

  In addition, since the seedling planting tool 42 operates by drawing a locus part H4 that moves toward the front of the aircraft after planting a seedling by drawing a V-shaped locus part H2, the seedling planting tool 42 is a cocoon ( After planting seedlings in the field), it will operate in a direction to escape from the seedlings planted toward the front of the aircraft, and the uplifting seedling planting tool 42 hooks the planted seedlings and disturbs the posture Can be avoided and appropriate seedling planting work can be performed.

  Further, the tension spring 153 urges the front and rear swing arms 134F and 134R toward the front of the machine body so that the swing drive cam 144 and the rotation roller 146 are brought into contact with each other, and the swing linkage arm 148 and the rotation roller 151 are moved. Since it is configured to contact, even if the seedling planting tool 42 contacts an obstacle at the time of seedling transplanting work or moving the body, the seedling planting tool 42 moves rearward of the body against the tension spring 153. It is a structure and can prevent the seedling planting tool 42 from being damaged.

  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.

  Reference numeral 154 denotes a seedling branching shooter as a seedling branching tool. The seedling picking device 43 of the seedling supply device 4 alternately turns seedlings taken out from the seedling tray T into a left seedling planting tool 42 and a right seedling planting tool 42. It is configured to convey and guide. That is, a seedling receiver 155 having an open funnel-shaped upper portion is provided below the position where the seedling collecting device 43 discharges the seedlings taken out from the seedling tray T so as to be swingable around the support shaft 156. The seedling receiver 155 is provided with a partition wall 155a at the left and right central portions, and a left funnel portion 155L and a right funnel portion 155R are formed. The left and right funnel portions 155L and 155R of the seedling receiver 155 and cylindrical left and right seedling shooters 156L and 156R each having an upper end communicating with the left and right funnel portions 155L and 156R are provided on the body. It is provided at a position facing the upper openings 42a, 42a of the left and right seedling planting tools 42, 42.

  The seed funnel 155 is connected to the left funnel 155L of the seedling device 43 through the interlocking arm 159 by the rotation of the drive crank 158 fixed to the drive shaft 157 that is rotated by driving from the planting section mission case 30. The state is such that the opened seedling is received and guided to the left seedling shooter 156L and the right funnel portion 155R is alternately switched between the state where the seedling is released and the right seedling shooter 156R is guided to the right seedling shooter 156R.

  Left and right shutter members 160L and 160R are provided at the lower ends of the left and right seedling shooters 156L and 156R, respectively, so as to be rotatable by left and right rotation shafts 161L and 161R (the left and right shutter members 160L and 160R are usually The lower end openings of the left and right seedling shooters 156L and 156R are closed by being urged by the winding springs provided around the left and right pivot shafts 161L and 161R). The left and right shutter members 160L and 160R are integrally formed with extending portions 160L 'and 160R' extending outward from the left and right pivot shafts 161L and 161R. Left and right push pins 162 </ b> L and 162 </ b> R are provided on the upper portion of 42. Therefore, when the left and right seedling planting tools 42 and 42 reach the upper end of the locus A, the upper left and right push pins 162L and 162R of the left and right seedling planting tools 42 and 42 have their left and right extending portions 160L ′ and 160R ′. The left and right shutter members 160L and 160R are rotated downward to open the lower end openings of the left and right seedling shooters 156L and 156R. Then, the seedlings received by the left and right shutter members 160L and 160R at the lower ends of the left and right shutter members 160L and 160R are supplied into the left and right seedling planting tools 42 and 42, respectively. Then, the right and left seedling planting tools 42 and 42 plant seedlings on the heel, and thereafter, the following pair of left and right pressing wheels 180 gently press the left and right side portions of the seedlings.

  In this way, since it is a two-row planted vegetable transplanting machine, a single seedling supply device 4 can automatically supply seedlings to the left and right seedling planting tools 42 and 42 to perform two-row planting of seedlings. In addition to this, it is possible to obtain a fully automatic two-row planted vegetable transplanting machine that is simple in configuration and light in weight.

  Further, when changing the interval between the left and right seedling planting tools 42 and 42 in the yellow direction, the lower end opening positions of the left and right seedling shooters 156L and 156R are the same distance as the position adjustment distance. The left and right seedling shooters 156L and 156R are each slidable 3 so that the left and right seedling shooters 156L and 156R can be adjusted in the left and right direction. The pipe material 156L ′ and 156R ′ are divided.

  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 main clutch lever 204 is turned on to move the left and right front wheels 3 and left and right rear wheels 2 along the ridges, and the planting lift lever 203 is operated to turn on the planting clutch and control the body. With the mechanism in a controlled state, the operator sits on the work seat 212 and starts the transplanting operation. At this time, the seedling extraction 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 are alternately supplied to the left and right seedling planting tools 42 and 42 via the seedling branch shooter 154. Then, after the left and right seedling planting tool 42 has planted the seedling in the cocoon, the pair of left and right pressing wheels 180 gently press the left and right side portions of the seedling. During the transplanting operation, the worker gets on the aircraft and sits on the work seat 212 and faces the front of the aircraft.

  And occasionally, looking at the tray T placed on the seedling stage 90 while checking the seedling transplanting operation state of the planting part 1b facing the direction of the rear seedling stage 90, a new seedling tray T When it is determined that the supply is necessary, the seedling tray T is taken out from the preliminary seedling mounting table 36 on the seedling mounting table 90 and supplied to the seedling mounting table 90 of the seedling tray moving device 40. 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 disposed behind the work seat 212. It can be stored immediately and work efficiency is good.

  In addition, in the said Example, the example of the fully automatic two-row planted vegetable transplanting machine which can supply a seedling to the right-and-left seedling planting tools 42 * 42 automatically with one seedling supply device 4, and can perform two-row planting of a seedling was shown. However, if three seedling planting tools 42 are provided in the left-right direction and the seedling branching shooter 154 is configured to branch the seedlings into three strips using one seedling supply device 4, a fully automatic three-row planted vegetable transplantation Machine can be configured. Similarly, if the number of seedling planting tools 42 is increased and the number of branches branched by the seedling branching shooter 154 using one seedling supply device 4 is increased, a fully automatic multiple-row planted vegetable transplanting machine having four or more plants is obtained. Can be configured. Moreover, although the example of the operation | work transplanted to a cocoon was shown, it is the same also when transplanting a seedling in 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. Other seedlings such as grass and flowers are also available. But it ’s okay.

Finally, another example of the seedling planting device 5 will be described with reference to FIG.
An example in which the configuration of the elevating link mechanism 130 is different from that of the above embodiment and the configuration is simplified by integrally configuring the drive crank arm and the swing drive cam with respect to the crank arm drive shaft 138.

  That is, the lifting link mechanism 130 is pivotally supported by the second planting transmission case 32 with its upper end pivotably supported by the upper front shaft 131F and the upper rear shaft 131R, and the lower end thereof by the lower front shaft 132F and the lower rear shaft 132R, respectively. The front swing arm 134F and the rear swing arm 134R, which are connected by the connection arm 133 so as to be freely rotatable at the front and rear, and the upper shaft 135U and the lower front shaft 132F of the connection arm 133 have front ends. Upper and lower parallel arms 137U and 137D that are pivotally supported and pivotally connected to a rotating upper shaft 136U and a rotating lower shaft 136D, respectively, which are provided at the seedling planting tool 42, respectively. The attachment 42 is provided so as to be movable and adjustable in the axial direction of the rotating upper shaft 136U and the rotating lower shaft 136D, and by adjusting the movement in the axial direction, the position in the left and right direction of the body can be adjusted. Right and left seedling planting tools 42 and 42 And a drive crank arm 139 that also serves as a swinging drive cam that rotates with a central portion fixed to a crank arm drive shaft 138 that protrudes from the second planting transmission case 32, and the drive An upper end is pivotally supported by a pivot support shaft 140 provided on the crank arm 139, and a lower end is pivotally connected to a pivot support shaft 142 provided at the front and rear center of the lower parallel arm 137D. A support arm 141, and an adjustment swing drive cam portion 171 having one end pivotally supported by the rotation support shaft 140 and the other end fixed to the drive crank arm 139 by a bolt 170 so as to be position adjustable. Rotating support shaft 172 is rotatably attached to rear swing arm 134R and is in contact with the outer periphery of drive crank arm 139 serving as the swing drive cam and adjusting swing drive cam portion 171. Provided between the roller 173, the support pin 174 provided on the second planting transmission case 32, and the lower end of the rear swing arm 134R, the front and rear swing arms 134F and 134R are urged toward the rear of the machine body. The driving crank arm 139 also serving as a swinging drive cam and the tension spring 175 for contacting the rotating roller 173 to the outer periphery of the adjusting swinging drive cam portion 171 are configured.

  Next, by the operation of the lift link mechanism 130, the lower end of the seedling planting tool 42 draws a planting locus A (static locus: a trajectory in a state in which the aircraft is stopped), and the seedling planting tool 42 seeds the seedling (field). The effect of transplantation will be described.

  The front and rear swing arms 134F and 134R swing back and forth through the rotation roller 173 by the rotation of the drive crank arm 139 that also serves as the swing drive cam and the adjustment swing drive cam portion 171. On the other hand, the upper and lower parallel arms 137U and 137D swing up and down via the support arm 141 by the rotation of the drive crank arm 139. Therefore, since the front and rear swing arms 134F and 134R and the upper and lower parallel arms 137U and 137D are parallel link mechanisms, the seedling planting tool 42 maintains the posture in the vertical direction shown in the side view of FIG. It operates by drawing the planting locus A, so that the seedlings received in the seedling planting tool 42 can be planted in a proper posture on the culm (field).

  The seedling planting tool 42 is configured to move up and down with vertical parallel arms 137U and 137D that are parallel link mechanisms and to move back and forth with front and rear swing arms 134F and 134R that are parallel link mechanisms. The upper trajectory (the trajectory that moves downward from the upper end of the trajectory and the trajectory that moves upward toward the upper end of the trajectory) by which the attachment 42 receives the seedling can draw a straight trajectory portion H1 that operates vertically. Can be properly received and planting of seedlings can be prevented from failing, and seedlings can be properly planted in the straw (field). The lower locus for planting the seedling on the heel of the seedling planting tool 42 can draw a V-shaped locus portion H2 in a side view, and the moving locus when the aircraft is driven is a linear locus in the vertical direction. By doing so, seedlings can be properly planted in a beautiful posture on the vine (field).

  Further, when the operation speed of the seedling planting tool 42 is changed with respect to the traveling speed of the machine body to change between the stocks, the bolt 170 is loosened to adjust the position of the adjustment swing drive cam portion 171 with respect to the drive crank arm 139. The front and rear width H3 of the V-shaped locus H2 can be freely changed by changing the outer peripheral cam shapes of the drive crank arm 139 that also serves as the swing drive cam and the adjustment swing drive cam portion 171. It is possible to change the width to a front and rear width H3 suitable for the change between the stocks, and even if the change is made between the stocks, appropriate seedling can be planted. That is, the front-rear width H3 of the V-shaped locus portion H2 increases as the adjustment swing drive cam portion 171 is adjusted in the two directions so as to largely protrude from the drive crank arm 139. When the operating speed of the seedling planting tool 42 is slowed down with respect to the vehicle speed in order to widen the strain, the seedling planting tool 42 is adjusted so that the front-to-back width H3 of the V-shaped locus H2 is increased. The movement trajectory is made to be a straight line in the vertical direction.

  In addition, since the seedling planting tool 42 operates by drawing a locus part H4 that moves toward the front of the aircraft after planting a seedling by drawing a V-shaped locus part H2, the seedling planting tool 42 is a cocoon ( After planting seedlings in the field), it will operate in a direction to escape from the seedlings planted toward the front of the aircraft, and the uplifting seedling planting tool 42 hooks the planted seedlings and disturbs the posture Can be avoided and appropriate seedling planting work can be performed.

  Since the drive crank arm 139 that also serves as the swing drive cam and the swing drive cam portion 171 for adjustment are driven by the single drive shaft (crank arm drive shaft) 138 in this way, the seedling planting tool 42 is driven. The structure is simplified, and a small and inexpensive seedling planting device 5 can be obtained.

1 Multi-row planted seedling transplanter (two-row planted 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 mounting table 42 Seedling planting tool 43 Seedling device 90 Seedling mounting table 130 Lifting link mechanism 134F Front Swing arm 134R Rear swing arm 137U Upper parallel arm 137D Lower parallel arm 139 Drive crank arm 144 Swing drive cam 154 Seed branch tool (seed branch shooter)
212 Seat 215 Empty tray storage part A Planting locus H1 Straight locus part H2 V-shaped locus part T Seedling tray in side view

Claims (2)

In a multi-row planted seedling transplanting machine in which a traveling part (1a) having a front wheel (3) and a rear wheel (2) is provided with a seeding supply device (4) and a planting part (1b) having a seedling planting device (5) The seedling supply device (4) is disposed in a state where the front portion is high and the rear portion is low above the rear portion of the traveling portion (1a), and the seedling mounting stand (90) and the seedling mounting stand (90 ) to be taken out one by one seedling from seedling tray placed (T) composed of a plurality of seedling planting apparatus (5) of the seedling planting device (supplied in 42) seedling device (43), the traveling unit A seat (212) on which an operator sits is provided at the front of (1a), and a bowl-shaped seedling planting tool (42) capable of opening and closing the seedling planting device (5) and the seedling planting tool (42) are provided. A forward / backward swing arm (134F / 134R) which is composed of a lift link mechanism (130) for driving up and down and swings the lift link mechanism (130) in the longitudinal direction of the fuselage. The planting trajectory (A1) is composed of upper and lower parallel arms (137U and 137D) that swing in the vertical direction of the machine body, and has a linear trajectory portion (H1) on which the seedling planting tool (42) operates linearly in the vertical direction. ), The seedling receiving device (155) for receiving the seedling taken out by the seedling collecting device (43), and the seedling received by the seedling receiving device (155) to the seedling planting device (42) on the left side. A seedling branching tool (154) including a left seedling shooter (156L) to be supplied and a right seedling shooter (156R) to supply the seedling received by the seedling receiving tool (155) to the right seedling planting tool (42) is provided. The seedling receiving device (155) has a left funnel portion (155L) formed on the left side of the partition wall (155a), a right funnel portion (155R) formed on the right side of the partition wall (155a), and swings left and right to receive. Shake seedling into left funnel (155L) and right funnel (155R) The seedling received in the left funnel part (155L) is guided to the left seedling shooter (156L), and the seedling received in the right funnel part (155R) is guided to the right seedling shooter (156R). A multi-row planted seedling transplanting machine characterized in that the shooter (156L) and the right seedling shooter (156R) are each formed of a plurality of pipe members (156L ′, 156R ′) to be stretchable . A preliminary seedling table (36) is arranged above the seedling table (90), an empty tray storage unit (215) is arranged behind the seat (212), and a steering handle (6) is provided at the rear of the aircraft. plural rows planted seedlings transplanter according to claim 1, wherein the a.

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