JP6069961B2 - Seedling transplanter - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an interlocking device for a seedling transplanter, in which a seedling planting portion is attached to a rear portion of a traveling vehicle body so as to be movable up and down, and stable seedling planting transmission and planting operation are performed while traveling on a soil surface. It is.

  Attach a raising and lowering seedling planting part to the rear part of the tractor vehicle body, and connect the PTO shaft of this vehicle body rear part or planting clutch case part and the input shaft of the seedling planting part with an interlocking shaft, A technique (see, for example, Patent Document 1) is known in which a seedling tank of the seedling planting unit, a planting apparatus, and the like are operated in conjunction with each other.

JP 2011-110026 JP

  In the seedling transplanting machine as described above, the running condition of the vehicle body, the soil condition where the float of the seedling planting part is in contact with the ground, etc. are likely to change, and the load of the seedling planting part, or the variation in resistance is significant, Transmission drive is difficult to stabilize, planting posture of seedlings is likely to be disturbed, and mechanical durability is likely to be reduced.

  Moreover, in the interlocking form by the PTO axis | shaft of a seedling planting part thru | or an interlocking shaft, in order to connect between the planting clutch axis | shaft of a vehicle body side and the input shaft of a seedling planting part by the interlocking shaft via a universal joint, soil conditions As the attitude and form of the interlocking shaft change constantly, the interlocking angle of the interlocking shaft changes, the length of the interlocking shaft becomes easy to change, and the rolling swing around the rolling axis of the seedling planting part Etc., the rotational state of the input shaft of the seedling planting part is constantly changed, so that vibration or the like is likely to occur, and the seedling planting accuracy is further reduced.

According to the first aspect of the present invention, a seedling planting portion (2) is connected to the rear portion of the vehicle body (1) through a lift link (3) so as to be lifted and lowered, and the PTO shaft (4) on the vehicle body (1) side is connected. ) Through a planting clutch (5), a universal joint (6), and an interlocking shaft (7), to the seedling planting case (8) side of the seedling planting unit (2),
The free-vertically bending angle with respect to straight interlocking position of the standing joint (6), lowering the angle (alpha) and increase the angle of the uppermost position of the lowermost position (beta) is substantially isometric of the planting device (2) configure, lateral to lateral direction with seedlings tank reciprocation (10), planting case of JikuSo planting shaft (13) of the planting claw (11) planting device provided with a (24) (23) Projecting backwards,
The seedling planting transmission case (8) in which the planting drive shaft (14) for interlocking the planting shaft (13) is arranged is connected to the rolling shaft (16) having a downward slope so as to be freely rollable, The seedling planting transmission case (8) is provided with an input shaft (17) connected to the interlocking shaft (7) at the upper front end of the rolling shaft (16), and the input shaft (17) and the planting drive Between the shaft (14), an input counter shaft (18), a lead cam shaft (19) for laterally moving the seedling tank (10), and a counter shaft (20) are sequentially arranged in a rearward downward tilting direction . The seedling transplanter is characterized by this.

In the invention according to claim 2, the planting device (24) includes a brake plate (21) on a planting shaft (13) for moving the planting claw (11) up and down, and the brake plate (21). ) Is provided with a brake arm (22) that can brake the rotation of the planting claw (11), and the planting position of the planting claw (11) that moves down the planting port (12) on the upper fulcrum part side in the raising and lowering locus line (D). A brake arm (22) is provided for braking in a descending stroke (A) descending from the soil surface to the soil surface and an ascending stroke (B) rising from the seedling planting position to the soil seed surface (12) position. the seedling transplantation machine of claim 1, wherein the a.

  According to the first aspect of the present invention, the vertical folding angle of the universal joint (6) with respect to the linear interlocking position (L) is generally expressed as a lowering angle (α) at the lowest position and an rising angle (β) at the highest position. By setting the same angle, the height position of the planting clutch (5) on the vehicle body (1) side is set as low as possible, the linear interlocking position (L) is lowered, and the rear descending inclination angle is formed loosely. Therefore, the bending angle of the interlocking shaft (7) can be reduced, and the extension / contraction length can be shortened.

  Thereby, since the horizontal movement of the seedling tank (10) at the time of seedling planting action and the planting transmission of the planting device (24) can be performed smoothly, generation of transmission vibration, pulsation, abnormal noise, etc. is suppressed. It is possible to improve seedling planting accuracy and durability.

In addition, the planting transmission case (8) can be moved along the rearward tilting posture of the interlocking shaft (7) and the rolling shaft (16) during the seedling planting posture, so that the vertical height is suppressed, and the center of gravity by raising and lowering is reduced. As the deflection becomes smaller, the rolling rotation diameter of the interlocking shaft (7) around the rolling shaft (16) can be made smaller so that the rolling action can be performed smoothly in a balanced manner. The lateral movement and the planting operation of the seedling planting part (24) can be performed smoothly and stably.

According to the second aspect of the present invention, in addition to the effect of the first aspect of the invention, the planting device (24) at the time of planting is planted by being rotated around the planting shaft (13). It is rotated up and down along the locus line (D). In this up and down rotation process, the seedling inlet (12) of the seedling tank (10) receives seedling separation resistance and seedling planting under the soil surface. In the attached part, it receives seedling planting resistance, but in the downward stroke (A) and the upward stroke (B) between these, by receiving appropriate rotational resistance by the brake plate (21) and the brake arm (2), Planting trajectory line (D) Uniform resistance in the whole-week rotation stroke reduces the load resistance fluctuation of the planting device (24) and reduces transmission vibration and the like to perform smooth seedling planting. By improving the seedling planting system, To be constant.

  Further, since the brake plate (21) is attached to the planting shaft (13) or the brake arm (22) is braked on the outer periphery of the rotation, the structure is simple and the maintenance can be facilitated. .

Side view of seedling transplanter Top view of seedling transplanter Side view of seedling planting part Side view of planting transmission case part of seedling planting part Top view of the seedling planting transmission planting case Side view of working part of seedling planting device Side view of the brake plate Side view showing the operating state of the brake plate Side view showing the operating state of the brake plate Side view showing the interlocking state of the interlocking shaft Perspective view of seedling tank (A) Rear view showing the folded state of the seedling tank part, (b) Plan view showing the folded state of the seedling tank part (A) Front view of foil cap part, (b) Side view of foil cap part

  As shown in FIG. 1 to FIG. 3, the seedling transplanter of the present case is provided via a lift link 3 in the form of a four-point parallel link that is rotated up and down by a lift cylinder 25 at the rear part of a tractor vehicle body 1 in a riding four-wheel traveling form. The seedling planting part 2 is equipped with a center float and a side float that slides and smooths the soil surface at the bottom, with the planting transmission case 8 as the main body. 9 is arranged so that the vertical direction angle is swingable, and a rear descending inclined seedling tank 10 is provided above the planting transmission case 8 so as to be movable in the lateral direction.

  In addition, a planting case 23 is disposed so as to protrude from the rear side of the planting transmission case 8, and a planting device 24 is mounted on the rear end portion of the planting case 23 by a lateral planting shaft 13. At the same time, the planting claw 11 at the tip of the planting device 24 is drawn with a planting locus line D having a substantially elliptical shape when viewed from the side. It is set as the form which performs the seedling planting operation | movement of a double crank form so that it may raise / lower between the soil surfaces to be leveled.

The vehicle body 1 is provided with an engine 26, an engine cover 27, an upper driver's seat 28, and the like on the center thereof, and a steering post 30 and a handle 31 are disposed on the front side of the driver's seat 28 via a center floor 29. A side floor 32, a front auxiliary seedling rack 33, and the like are arranged on the left and right sides, and a fertilizer 35 is mounted on the rear frame 34 on the rear side of the driver's seat 28. Application can be guided through the fertilization hose 36 to the soil surface where the seedling is planted by the attaching device.

  Further, a transmission case 37, an HST 38, and the like are disposed in the front portion of the vehicle body 1, and the PTO shaft 4 is driven by interlocking the left and right front wheels 39, the rear wheels 40, etc. in response to transmission from the engine 26. Thus, the seedling planting part 2 can be interlocked via the rear planting clutch 5, the interlocking shaft 7, and the like.

  The lift link 3 protrudes rearward of the rear frame 34 and is pivotally supported so as to be rotatable up and down. The lift link 3 has a rolling shaft 16 inclined downward at the lower end of the hitch link 15 at the rear end, and is planted. In the central portion of the transmission case 8 in the lateral width direction, the transmission case 8 is rotatably connected around the rolling shaft 16. On the front side of the seedling planting part 2, a scraping rotor 41 that scrapes the soil surface leveled by each float 9 is disposed as a center rotor on the front side of the center float, a side rotor on the front side of the side float, and the like. Power is taken out by the rotor interlocking shaft 42 from the interlocking mechanism unit that interlocks with and interlocks, and the soil surface leveled by the float 9 is crushed in advance to facilitate leveling.

  Such a seedling planting unit 2 is configured to expand and contract the lift cylinder 25 by swinging the angle of the center float 9 and raise and lower the seedling planting unit 2 according to a change in the depth of the soil surface. The elevation control is performed so as to maintain the attachment depth substantially constant. Further, the seedling planting part 2 can be moved up and down by operating the lift cylinder 25 to extend and contract. When the lift link 3 is lowered to the lowest position, it is possible to obtain a seedling planting posture in which the float 9 is grounded on the soil surface and leveled while performing the seedling planting.

Moreover, if it raises to the highest position, the float 9 can be spaced apart from the soil surface and can be set to a non-seedling posture, and it can be turned back at the end of the streak, overwhelmed, or simply moved to the vehicle body. Make it easier to do.

  As shown in FIGS. 3, 4, 5, and the like, the seedling planting unit 2 has a seedling planting transmission mechanism that is interlocked via an interlocking shaft 7 as a main component of an interior planting transmission case 8. A rolling shaft 16 projects from the center of the front end of the case 8, and an input shaft 17 is provided on the upper side of the rolling shaft 16 to which the interlocking shaft 7 is connected via the universal joint 6. Each planting device 24 is provided on the rear side. The planting case 23 that shafts is arranged so as to protrude rearward.

  An input counter shaft 18 gear that is linked from the input shaft 17 via a bevel gear is provided inside the planting transmission case 8, and a lead cam shaft 19 is gear-linked to the lower portion of the input transmission shaft 18. By rotating the lead cam fitted into the formed spiral groove at a fixed position, the lead cam shaft 19 is moved in the lateral direction, and the seedling tank 10 connected to the lateral end of the lead cam shaft 19 via the lateral feed arm 43 is moved. Can be reciprocated in the horizontal direction.

  A planting drive shaft 14 is provided on the rear lower end portion of the planting transmission case 8 from the lead cam shaft 19 gear through the counter shaft 20 gear, and the planting drive shaft 14 plantes the rear end portion of each planting case 23. The attached shaft 13 is interlocked so as to rotate in conjunction with the chain 54. Each planting case 23 is arranged in the front-rear direction for each upper part of each float 9, and the planting device 24 is arranged on both the left and right sides at the rear end of each planting case 23 and is driven by the planting shaft 13. Is done.

  In the side view, the seedling transmission case 8 is formed in an inclined shape so that the input shaft 17 portion on the front end side is in the upper position and the planting case 23 portion on the rear end side is in the rear lower position, and the input shaft 17 is When the substantially horizontal state is set, the rolling shaft 16 is configured to be inclined forward, and the front extension shaft cores of the upper and lower input shafts 17 and the rolling shaft 16 are set to intersect with each other. .

  As shown in FIGS. 6 and 7, the seedling tank 10 for each planting strip is a form in which all strips are integrally connected in the lateral direction, with mat seedlings placed on the top surface, and a feeding belt 42 disposed at the bottom. It can be fed to the seedling outlet 12 at the rear lower end by intermittent rotation. The seedling tank 10 can be reciprocated in the lateral direction by connecting the left and right sides and both ends of the REIT cam shaft 19 with a lateral feed arm 43. The rear lower end portion of the seedling tank 10 is supported and guided by a seedling inlet guide 55 having a side view-shaped cross section forming the seedling outlet 12, and the front end upper portion is supported and connected by a support frame 44 that is supported on the planting transmission case 8. doing.

  The planting device 24 includes an arm case 45 attached to both ends of the planting shaft 13 and integrally rotated, and a planting rod 47 pivotally supported by the arm shafts 46 at both ends of the arm case 45. The planting claw 11 and the extruding element 56 for extruding the seedling separated and held by the planting claw 11 downward and inserting it into the soil surface are provided at the tip of each planting rod 47. By rotation of the arm case 45 around the planting shaft 13, the planting rods 47 are rotated around the arm shaft 46 by the gear mechanism inside the arm case 45, so that the planting claw 11 at the tip portion is moved in the front-rear direction. It is moved up and down in the A and B directions while being biased, and a double crank type planting operation is performed so as to draw a substantially elliptical planting locus line D in a side view.

  Further, the planting shaft 13 is configured such that a brake plate 21 in the form of a cam disk rotates integrally, and the brake arm 20 is elastically pressed by a spring 50 on the rotating peripheral surface of the brake plate 21 so that a planting shaft is provided. An appropriate brake force is applied to the 13 rotations.

  As the arm case 45 rotates together with the planting shaft 13, the brake plate 21, etc., the planting claws 11 of each planting basket 47 move down the seedling inlet 12 of the seedling tank 10, and this separation is performed. Since the held seedling is subjected to an insertion action process below the soil surface, the phase position at which the rotational resistance force acts on the planting shaft 13 is the position of the seedling inlet 12 through which each planting claw 11 passes, and each planting It is a two-stroke with the seedling planting position where the artificial nail 11 is inserted into the soil surface and the seedling pusher 56 is pushed out, and each planting in the lowering stroke A and the rising stroke B in the interval part of these strokes Since the driving force of the shaft 13 changes so as to be in a no-load state, the outer peripheral surface of the brake plate 21 is formed as an eccentric cam-type brake surface 48 with a 180-degree rotational phase. A small diameter portion 49 having a small rotation diameter between the brake surfaces 48 becomes a non-brake surface having a small sliding contact pressure of the brake arm 22.

  As shown in FIGS. 8 and 9, the brake arm 22 is rotatably supported by an arm pin 51 of the planting case 23 and is pressed and supported by a bolt 52 that can be adjusted and operated from the outer side of the rear end of the planting case 23. The spring 50 is repelled to brake the rotation of the brake plate 21. The case lid 53 for attaching the brake arm 22 and the spring 50 can be attached to the rear end of the planting case 23 so as to be openable and closable for easy maintenance. The arrangement relationship between the brake surface 48 of the brake plate 21 and the brake arm 22 can increase or decrease the torque with respect to the rotation of the planting shaft 13 depending on the operating direction angle of the brake arm 21 with respect to the brake surface 48. The brake surface 48 is gently formed to reduce the torque fluctuation, or by pushing the rotating back side of the brake plate 21, the braking force is applied in response to the load increase in the descending stroke A and the ascending stroke B. The torque variation in the planting shaft 13 is reduced.

  As shown in FIGS. 3 to 5 and 10, the interlocking shaft 7 is configured to interlock with the front end portion and the rear end portion via the universal joint 6 so that the PTO shaft 4 and the input shaft 17 can be bent and interlocked. Further, the interlocking shaft 7 is formed to be extendable and contractable by fitting with a spline 57, and the extendable portion is covered with an expandable / contractible boot 58. A state in which the PTO shaft 4, the interlocking shaft 7, and the input shaft 17 are arranged substantially in a straight line is defined as a linear interlocking position L, and a rising angle β for raising the seedling planting part 2 to the uppermost position, and the lowest The lowering angle α to be lowered to the position is set to a substantially equivalent angle.

  Here, the seedling planting part 2 is connected to the rear part of the vehicle body 1 through a lift link 3 so as to be lifted and lowered, and the planting clutch 5, the universal joint 6, the interlocking shaft 7, etc. from the PTO shaft 4 on the vehicle body 1 side. In the seedling transplanting machine interlocking to the planting transmission case 8 side of the seedling planting part 2 through the vertical bending angle with respect to the linear interlocking position L of the universal joint 6, the lowest descending position of the seedling planting part 2 The seedling transplanting device of the seedling transplanting machine is configured to be substantially equiangular as the descending angle α and the rising angle β at the highest position.

  In the seedling planting posture in the paddy field, the seedling planting portion 2 connected to the rear portion of the traveling vehicle body 1 via the lift link 3 can swing up and down via the lift link 3 and float. 9 can slide to the soil surface and slide into the lowest position where the seedling is placed, and rise to the highest position and can be in a non-seedling position.

  And in the lowest descending position of the seedling planting posture of this seedling planting section 2, the seedling planting section detects the change in soil conditions such as the hardness of the soil surface, the depth, and the uneven surface by sliding the float 9 The soil surface is leveled while swinging 2 up and down, or rolling left and right around the rolling shaft 16, so that the seedling is planted to a certain depth with respect to the soil surface. The transmission of the seedling planting part 2 is performed by the transmission mechanism of the planting transmission case 8 by the rotation of the interlocking shaft 7 that is interlocked via the PTO shaft 4 on the vehicle body 1 side, the planting clutch 5, the universal joint 6 and the like. After being planted.

  The interlocking shaft 7 interlocked with the transmission mechanism portion of the planting transmission case 8 is refractably transmitted at the universal joint 6 portion by the raising / lowering motion of the seedling planting portion 2 or the rolling swing around the rolling shaft 16. The vertical bending angle of the interlocking shaft 7 is a downward bending angle with respect to the linear interlocking position L where the front and rear universal joints 6 are linearly connected, that is, the seedling planting portion 2 is lowered to the lowest lowered position. By setting the angle α and the upward bending angle, that is, the rising angle β of the seedling planting portion 2 to the highest rising position, is set to be substantially the same angle (α≈β), the lowering angle α and Both the rising angle β is reduced to reduce the vibration of the interlocking shaft 7 and the rattling.

  In addition, a seedling tank 10 that is reciprocated in the horizontal direction is disposed on the upper side, supported by a float 9 that slides on the soil surface, and a planting claw 11 at the tip is moved up and down at the lower rear part of the seedling tank 10. This seedling planting shaft 24 of a seedling planting device 24 for planting seedlings separated and held from the seedling outlet 12 on the soil surface leveled by the float 9 is arranged so that the planting case 23 of the shaft is projected rearward. A planting transmission case 8 provided with a planting drive shaft 14 for interlocking the shaft 13 is connected to a hitch link 15 at the rear end portion of the lift link 3 so as to be freely rollable around a rolling shaft 16 inclined downward and downward. The planting transmission case 8 is provided with an input shaft 17 connected to the interlocking shaft 7 at an upper front end portion of the rolling shaft 16, and an input is provided between the input shaft 17 and the planting drive shaft 14. The counter shaft 18 and the seedling tank 10 are moved laterally. The cam shaft 19 and the counter shaft 20 are sequentially arranged along the rearward downward tilt direction, and the seedling tank 10 is moved laterally by the rotation of the lead cam shaft 19 by the drive of the input shaft 17. The seedling planting device 24 is planted by the rotation of.

  As described above, the vertical folding angle of the interlocking shaft 7 in the raising and lowering of the seedling planting part 2 is set so that the descending angle α and the rising angle β with respect to the linear interlocking position L are substantially equiangular. The planting transmission case 8 is designed to perform transmission smoothly, to prevent vibrations, and to perform smooth seedling planting work. This planting transmission case 8 includes an input shaft 17 that is an internal transmission mechanism, an input counter shaft 18, a reed cam, and the like. Since the shaft 19, the counter shaft 20 and the planting drive shaft 14 are sequentially arranged along the rearward downward slope, the interlocking shaft extends from the PTO shaft 4 to the rear via the planting clutch 5, the universal joint 6 and the like. 7 and the transmission mechanisms in the planting transmission case 8 are arranged gently and rearwardly in a downward slope so that the seedling planting transmission is performed smoothly.

  Further, since the input shaft 17 connected to the interlocking shaft 7 is provided on the upper portion of the rolling shaft 16 inclined downward, the interlocking mechanism of the planting transmission case 8 is rolled around the rolling shaft 16 in a well-balanced manner. Smooth rotation to the seedling tank 10 and the seedling planting device 24 is performed while rotating.

  Further, the seedling planting device 24 is provided with a brake plate 21 on a planting shaft 13 that drives the planting claws 11 to move up and down, and a brake arm 22 that can brake the rotation of the brake plate 21. The descending process A descending from the seedling collection position moving down the seedling inlet 12 on the upper fulcrum part side on the ascending / descending planting locus line D of the claw 11 to the soil surface, and the upper seedling from the seedling planting position to this soil surface A brake arm 22 for braking in the ascending stroke B rising to the position of the mouth 12 is provided.

  As described above, the planting shaft 13 and the brake plate at the rear end portion of the planting case 23 pass through the interlocking shaft 7 from the PTO shaft 4, the respective leaf cam shafts 19 in the planting transmission case 8, the planting drive shaft 14, and the like. 21 is driven to rotate.

  By the rotation of the planting shaft 13, the seedling planting device 24 rotates the planting claw 11 at the tip part up and down along the planting locus line D, and the seedling inlet 12 of the seedling tank 10 is used by the planting claw 11. The seedlings are separated and held from above and the descending stroke A is operated to plant the seedlings on the soil surface. After the seedling planting, the planting claw 11 goes up through the ascent process B and returns to the seedling opening 12 at the upper fulcrum. In such up-and-down transmission of the planting device 24, when the planting claw 11 passes through the seedling inlet 12, it receives a seedling separation resistance for separating the mat seedling in the seedling tank 10.

  Moreover, when the planting claw 11 descends to the soil surface, it receives a seedling planting resistance with the soil surface. In the descending stroke A and the ascending stroke B while receiving the seedling separation resistance and the seedling planting resistance, the transmission load for driving the planting device 24 changes abruptly from an almost no-load state. However, in the no-load state of the descending stroke A and the ascending stroke B, the brake arm 22 is brought into contact with the rotating circumferential surface of the brake plate 21 that rotates integrally with the planting device 24, and the rotation of the brake plate 21. Braking force works.

  For this reason, the interlocking of the seedling planting device 24 is not limited to transmission loads such as seedling separation resistance and seedling planting resistance, but also applies a brake of pressure as appropriate in the downward stroke A and the upward stroke B between them. It is possible to reduce the rapid fluctuation in the seedling planting operation, smoothly perform seedling planting transmission, and perform a stable seedling planting operation.

  Next, mainly based on FIGS. 11, 12 (a) and 12 (b), the end tank 60 corresponding to one horizontal end of the seedling tank 10 is moved upward 180 degrees around the folding pin 61 on the inner upper end. The outer wall 62 of the end tank 60 is supported by a receiving seat 63 formed on the upper end portion of the inner seedling tank 10 by turning the remaining rotation angle C. In this folded configuration, the outer wall 62 of the end tank 60 may interfere with the partition wall 64 of the inner seedling tank 10 and cannot be supported by the receiving seat 64. In this case, the end tank 60 is folded. The end tank 60 can also be configured to overlap with the upper side or the lower side of the seedling tank 10 by moving upward or downward along the direction of the tatami pin 61. Reference numeral 65 denotes a handle for rotating the end tank 60. The end tank 60 can be connected to the side surface of the inner seedling tank 10 or can be removed and folded for rotation.

  Next, mainly based on FIGS. 13A and 13B, a side disk 67 having a dish-shaped concave curved surface 66 formed on the outside of the rear wheel 40 or the front wheel 39 of the vehicle body 1 is attached to the wheels 40 or 39. In this way, mud soil is prevented from adhering to the concave curved surface 66 of the side disk 67. The side disc 67 is attached to the center portion of the side disk 67 by screwing it to the axle portion 69 of the wheels 40 and 39 through a rotatable bolt shaft 68.

DESCRIPTION OF SYMBOLS 1 Car body 2 Seedling planting part 3 Lift link 4 PTO shaft 5 Planting clutch 6 Universal joint 7 Interlocking shaft 8 Planting transmission case 9 Float 10 Seedling tank 11 Planting claw 12 Seedling inlet 13 Planting shaft 14 Planting drive shaft 15 Hitch link 16 Rolling shaft 17 Input shaft 18 Input counter shaft 19 Lead cam shaft 20 Counter shaft 21 Brake plate 22 Brake arm 23 Planting case 24 Planting device α descending angle β climbing angle A descending stroke B ascending stroke D planting trajectory line L Linear interlocking position

Claims (2)

A seedling planting part (2) is connected to the rear part of the vehicle body (1) via a lift link (3) so as to be able to be raised and lowered, and a planting clutch (5) from the PTO shaft (4) on the vehicle body (1) side, In the seedling planting machine that transmits to the seedling planting transmission case (8) side of the seedling planting part (2) through the universal joint (6) and the interlocking shaft (7),
The free-vertically bending angle with respect to straight interlocking position of the standing joint (6), lowering the angle (alpha) and increase the angle of the uppermost position of the lowermost position (beta) is substantially isometric of the planting device (2) configure, lateral to lateral direction with seedlings tank reciprocation (10), planting case of JikuSo planting shaft (13) of the planting claw (11) planting device provided with a (24) (23) Projecting backwards,
The seedling planting transmission case (8) in which the planting drive shaft (14) for interlocking the planting shaft (13) is arranged is connected to the rolling shaft (16) having a downward slope so as to be freely rollable, The seedling planting transmission case (8) is provided with an input shaft (17) connected to the interlocking shaft (7) at the upper front end of the rolling shaft (16), and the input shaft (17) and the planting drive Between the shaft (14), an input counter shaft (18), a lead cam shaft (19) for laterally moving the seedling tank (10), and a counter shaft (20) are sequentially arranged in a rearward downward tilting direction . A seedling transplanter characterized by that. The planting device (24) includes a brake plate (21) on a planting shaft (13) that drives the planting claw (11) up and down, and a brake arm that can brake the rotation of the brake plate (21). (22) is provided, and a lowering process (downward) of the planting claw (11) descending from the seedling collection position (12) on the upper fulcrum side on the ascending / planting locus line (D) to the soil surface ( The brake arm (22) which brakes in A) and the ascent process (B) which rises from this seedling planting position to the upper seedling inlet (12) position is provided. The seedling transplanter described in 1.

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