JP2015136316A - transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably plant seedlings in an upright state in a transplanter for planting the seedlings in a ridge by lifting and opening/closing a planting device storing the seedlings.SOLUTION: The transplanter that, with advance of a machine body, performs planting by sticking a planting device 28 storing seedlings in a ridge U, bores a planting hole in the ridge U by lowering of the planting device 28, and, at a position where the planting device 28 is lifted from a bottom dead point A to a prescribed height, a front member and a rear member of the planting device 28 are opened in the front/rear, inserts seedlings into the planting hole to plant them.

Description

  The present invention relates to a transplanter that transplants seedlings such as onions, lettuce, and tobacco, seed pods, and the like to a field using a planting apparatus.

  In the conventional transplanter, as described in Patent Document 1 below, a hole-making body whose lower end is sharpened in a beak shape periodically moves up and down, and seedlings are supplied into the hole-making body at the highest dead center, and the descent process The drilling body enters the soil and forms a planting hole, the bottom of the drilling body opens at the bottom dead center at the lowest drop, the seedling is discharged, and the drilling body moves up and remains open Planted.

Japanese Patent Laid-Open No. 2000-60238

  The planting body of the transplanter enters the soil and drills a planting hole, and then the drilling body opens the lower part in the soil at the bottom dead center of the lifting operation to supply the seedling inside to the planting hole. Ascend with the bottom open so as not to pinch the seedling leaves. For this reason, when the hole is opened, the planting hole is broken to make the surrounding area of the seedling soft and the seedling is planted in a collapsed state, or when the hole is raised, soil is sprinkled on the seedling. It will hang and the subsequent growth will worsen.

  An object of the present invention is to allow a seedling to be stably planted in an upright state in a transplanting machine for raising and lowering a planting tool that stores a seedling to plant the seedling on a cocoon.

The above-mentioned problem of the present invention is solved by the following means.
The invention described in claim 1 is a seedling transplanting machine that performs planting by inserting a planting tool (28) containing a seedling into the field as the aircraft advances, and the planting machine (28) is lowered to the field by lowering the planting tool (28). A planting hole is drilled, and the lower part of the planting tool (28) opens back and forth at a position where the planting tool (28) is raised from the bottom dead center (A) to a predetermined height, and the seedling is put into the planting hole. The transplanter is characterized by planting.

  In the invention according to claim 2, the front member (28F) of the planting tool (28) does not move forward in the process in which the planting tool (28) rises from the bottom dead center (A), and the rear member (28R). The transplanter according to claim 1, which moves backward to open.

  The invention according to claim 3 is characterized in that the front member (28F) and the rear member (28R) are opened while the planting tool (28) is raised from the bottom dead center (A) while moving backward. The transplanter according to claim 1.

  The invention according to claim 4 is provided with an inclined edge presser (176) inclined inward around the upper portion of the planting tool (28), and a planting hole is drilled by lowering the planting tool (28). 4. The transplanter according to claim 1, wherein the peripheral portion of the planting hole is pressed by an inclined edge push (176). 5.

  The invention according to claim 5 is a transplanting machine in which the planting tool (28) moves up and down while planting a seedling while traveling across the heel (U) between the front wheel (13) and the rear wheel (14). 5) and a state in which the left and right front wheels (13) are tilted inward so that the left and right side surfaces of the heel (U) can be rolled. 5. The transplanter described in the section.

  According to the first aspect of the present invention, the planting tool 28 is inserted into the field in the descending process and a planting hole is drilled, and the planting tool 28 is raised from the bottom dead center A to a predetermined height from the planting hole. Since the lower part of the planting tool 28 is opened after being pulled out to the position, the seedling is dropped and supplied to the planting hole without breaking the planting hole by the opening operation of the lower part of the planting tool 28, so that the small A seedling is put into the planting hole and planted in an upright state.

  According to the invention described in claim 2, in the process in which the planting tool 28 is raised from the bottom dead center A, the planting tool 28 moves to the front of the planting hole as the aircraft moves, but the front member 28F is moved forward. The rear member 28R moves rearward without moving to the rear, so that the lower portion of the planting tool 28 can be set to a desired opening amount without breaking the planting hole by the opening operation of the lower portion of the planting tool 28. Or seedlings can be fed in the center of the planting hole. In addition, since the seedling is guided directly above the planting hole along the inner surface of the front member 28F, the seedling is reliably supplied to the planting hole.

  According to the third aspect of the present invention, the front member (28F) and the rear member (28R) can perform the opening operation while moving backward, even if the aircraft advances while the planting tool 28 is raised from the bottom dead center A. Thus, the opening of the lower part of the planting tool 28 does not break the planting hole, and the lower part of the planting tool 28 can be set to a desired opening amount, or the seedling is supplied to the center of the planting hole. Can do. Moreover, since the planting tool 28 is opened while maintaining a position just above the planting hole, the seedling is surely dropped and supplied to the planting hole so as to be in an upright state.

  According to the invention described in claim 4, the planting hole is drilled by the descending of the planting tool 28, and the peripheral edge of the planting hole is pressed and solidified by the inclined edge pusher 176, so that the planting hole is not easily collapsed and planting Plant the seedlings upright in the holes.

  According to the fifth aspect of the present invention, when the transplanter is moved and moved, the front wheel 13 is supported vertically and the front side of the machine body is supported. The vehicle travels along the kite U by tilting and rolling the left and right sides of the kite U.

Left side view of tobacco seedling transplanter, (a) Side view of lifting locus of planting tool tip Top view of tobacco seedling transplanter Plan view of fixed and movable spare seedling stands installed in tobacco seedling transplanter (A) Bottom view of the seedling supply unit from below, (b) Partial perspective top view of the seedling supply unit Side sectional view explaining mounting structure of seedling supply unit Side view of planting transmission case Side sectional view of planting device drive case Deployment plan view of planting transmission case Partial cross-sectional view of planting clutch Perspective view seen from the left front of the planting device Perspective view seen from the right rear of the planting device Side view of planting device (A)-(d), Side view of planting apparatus in each position during planting operation Side view showing locus of planting tool Side view showing another embodiment of the planting tool Side view showing still another embodiment of the planting tool Side view of an embodiment in which a pressing plate is attached to a planting tool Partial front view showing another embodiment of the front wheel mounting configuration Side view of another embodiment of transplanter Plan view of the supply cup of another embodiment Partial sectional view of a supply cup of another embodiment The perspective view of the supply cup of another Example Side view of planting tool showing lifting mechanism of another embodiment

Hereinafter, the configuration and operation of a tobacco seedling transplanter according to an embodiment of the present invention will be described with reference to the drawings.
In the following description, the front part of the tobacco seedling transplanter 10 is the side on which the engine 11 is disposed, and the rear part is the side on which the steering handle 16 is disposed. Further, the right hand side of the operator viewing the engine 11 side from the steering handle 16 side is the right side of the tobacco seedling transplanter 10, and the left hand side is the left side.

  FIG. 1 is a side view showing a tobacco seedling transplanter 10 for transplanting tobacco seedlings as an example of a transplanter according to an embodiment of the present invention, and FIG. 2 is a plan view of the tobacco seedling transplanter 10. In FIG. 2, the state which accommodated the movable reserve seedling stand was shown with the dashed-two dotted line.

  As shown in FIGS. 1 and 2, the tobacco seedling transplanter 10 according to the present embodiment includes a traveling vehicle body 1 that allows the vehicle body to travel forward, and a steering handle 16 for walking operation provided at the rear of the traveling vehicle body 1. A planting device 19 for planting tobacco seedlings in a farm field provided at the rear of the traveling vehicle body 1 and in front of the steering handle 16 and a planting device 19 provided above the planting device 19 for supplying tobacco seedlings to the planting device 19 The seedling supply part 31 to be provided.

  Further, the tobacco seedling transplanting machine 10 according to the present embodiment performs seedling transplanting work by planting seedlings with the planting tool 28 on the heel U that travels across the left and right front wheels 13 and the left and right rear wheels 14. 160 is provided in the front part of the aircraft, and the left and right heel guide rollers 250 are in contact with the left and right slopes of the heel U, respectively, and the aircraft is guided and traveled along the heel U.

  As shown in FIG. 18, a front pressure-reducing wheel 164 is provided at the front end of the airframe to roll on the reed U to relieve the reed surface immediately before planting, and is vertically attached to the support arm 165 that supports the support shaft 168 of the left and right front wheels 13. It is also possible to provide a part 166 and an inclination attaching part 167 and attach a support shaft 168 to the inclination attaching part 167 so that the left and right front wheels 13 roll on the left and right side surfaces of the eaves U to guide the traveling direction to the eaves U. When traveling on the road, the support shaft 168 is attached to the vertical attachment portion 166.

In FIG. 3, the top view of the fixed reserve seedling stand and movable reserve seedling stand provided in the tobacco seedling transplanting machine 10 of this Embodiment was shown, and the state which accommodated the movable reserve seedling stand was shown with the dashed-two dotted line.
The fixed preliminary seedling stands 300L and 300R are connected in parallel with each other by the first connecting member 301 and the second connecting member 302 (see FIG. 3), and the first connecting member 301 side travels through the front support member 303. It is fixed to the upper surface of the vehicle body 1. Further, in the vicinity of the rear of the second connecting member 302, the opposing side wall portions of the pair of left and right fixed preliminary seedling stands 300L and 300R are the upper surfaces of the traveling vehicle body 1 via the rear support members 304, respectively, and the front support It is fixed rearward from the attachment position of the member 303. The pair of left and right fixed preliminary seedling stands 300 </ b> L and 300 </ b> R are inclined downward in the front-rear direction of the traveling vehicle body 1.

  Further, as shown in the drawing, the upper surface of the traveling vehicle body 1 is located behind the rear support member 304 and in the plan view, on the rear end side of the pair of left and right fixed preliminary seedling stands 300L and 300R, and in the center of the traveling vehicle body 1. A pair of left and right cylindrical movable support members 310L and 310R are erected at the corners near the position. And the short side of the pair of left and right pipe-shaped members 311L, 311R bent in a substantially L shape is rotatably inserted into the cylindrical holes of the cylindrical movable support members 310L, 310R. Each long side is attached to the bottom surface side of the movable spare seedling stands 350L and 350R.

  Further, as shown in the figure, the long sides of the pipe-shaped members 311L and 311R are fixed at positions almost diagonally with respect to the movable spare seedling stands 350L and 350R, and the movable spare seedling stands 350L and 350R are solid lines in the figure. In the state represented by (i.e., in use), the bending angle of the pipe-like members 311L and 311R is set to an acute angle smaller than 90 degrees so as to incline backward and downward in the front-rear direction of the traveling vehicle body 1.

  Thereby, the pair of left and right movable spare seedling stands 350L and 350R are inclined downward in the front-rear direction of the traveling vehicle body 1 when in use, and when not in use, the pair of left and right cylindrical movable support members 310L and 310R are inclined. Is pivoted manually in the directions of arrows B and C (see FIG. 3), respectively, to be stored below the pair of left and right fixed preliminary seedling stands 300L and 300R. The vehicle body 1 is inclined downward toward the outside in the left-right direction.

Next, the configuration of the fertilizer applicator will be described.
As shown in FIG. 1 and FIG. 2, a pair of left and right movable spare seedling stands 350L and 350R in the rear of the pair of left and right fixed preliminary seedling stands 300L and 300R, in front of the seedling supply unit 31 and in use. A pair of left and right fertilizer applicators 400L and 400R are provided at the sandwiched positions. The pair of left and right fertilizer applicators 400L and 400R are respectively provided with fertilizer hoppers 410L and 410R that store fertilizers to be supplied to the field, and fertilizer feed units 420L and 420R that are provided below the fertilizers and feed out the fertilizers.

  As shown in FIG. 1, among the pair of left and right fertilizer applicators 400L and 400R, a fertilizer feed section 420L attached to the lower portion of the left fertilizer applicator 400L has a front hose 430L that discharges fertilizer to the front side of the planting device 19. A rear hose that discharges fertilizer to the rear side of the planting device 19 is disposed in the fertilizer feeding part 420R attached to the lower part of the right fertilizer applicator 400R out of the pair of left and right fertilizer applicators 400L and 400R. 430R is arranged. A hose holding portion 431 that holds the opening front ends of the front hose 430L and the rear hose 430R is disposed in the lower portion of the traveling vehicle body 1.

  The traveling vehicle body 1 includes an engine 11 and a main transmission case 12 at a front portion, and a pair of left and right front wheels 13 and a rear wheel 14 as traveling wheels, and a rear portion includes a planting device 19 and a seedling supply portion 31 as described above. And a steering handle 16 and a pressure wheel 15.

  A configuration in which the front wheel 13 and the rear wheel 14 travel between the ridges so that the traveling vehicle body 1 straddles the ridge U in the field, and a seedling is planted by the planting device 19 at the center position in the left-right width direction of the upper surface of the ridge U. It has become.

  Further, as shown in FIG. 2, left and right traveling extension cases 40 are provided at the left and right ends of the main transmission case 12 so as to be rotatable with respect to the main transmission case 12. A traveling chain case 20 is attached. Therefore, the power in the main transmission case 12 input from the engine 11 is transmitted to the traveling chain case 20.

  A pair of left and right rear wheels 14 that are traveling wheels are respectively attached to the left and right outer sides of the rotating tip of the traveling chain case 20, and the airframe travels by driving the pair of left and right rear wheels 14. Therefore, the main transmission case 12 is a transmission device that transmits to the rear wheel 14 as a traveling wheel.

  Further, as shown in FIG. 2, a rear frame 21 extending in the left-right direction is fixedly provided at the rear end of the main transmission case 12, and the right end portion of the rear end surface of the rear frame 21 is positioned in the front-rear direction at a position on the right side of the fuselage. A main frame 22 extending in the direction is provided. A steering handle 16 is provided at the rear end of the main frame 22, and the steering handle 16 is supported by the main transmission case 12 via the main frame 22 and the rear frame 21. The planting transmission case 26 is fixedly provided on the upper surface of the rear frame 21 on the left or right side (right side) with the front lower end portion of the planting transmission case 26 mounted thereon.

  A hydraulic lifting cylinder 23 is provided at the rear of the main transmission case 12 in the center in the left-right direction. The hydraulic lift cylinder 23 is fixedly provided to a hydraulic pressure switching valve portion 24 (see FIG. 1) attached to the main transmission case 12, and an oil passage from a hydraulic pump attached to the main transmission case 12 is connected to the hydraulic pressure switching valve. It is operated by switching at the unit 24.

  A horizontal rod 43 extending left and right is provided at the rear end of the cylinder rod of the hydraulic lifting cylinder 23, and a left rear wheel lifting rod 44 and a right rear wheel lifting rod 45 serving as rods are provided at the left and right ends of the horizontal rod 43, respectively. The other ends of the left rear wheel lifting rod 44 and the right rear wheel lifting rod 45 are pivotally attached to the upper arm 40a attached to each traveling extension case 40, and the horizontal rod 43 and the traveling extension case 40 are coupled. It has been configured.

  Accordingly, the traveling chain case 20 is rotated around the left and right output shafts of the main transmission case 12 through the horizontal rod 43, the left rear wheel lifting rod 44 and the right rear wheel lifting rod 45 by the expansion and contraction of the hydraulic lifting cylinder 23. As the traveling chain case 20 rotates, the rear wheel 14 moves up and down to raise and lower the traveling vehicle body 1.

  In addition, a left / right tilt hydraulic cylinder 25 that is actuated by hydraulic pressure from a hydraulic pump is provided in the middle of the left rear wheel lift rod 44 so that the left rear wheel lift rod 44 extends and contracts. The left and right rear wheels 14 are moved up and down based on the vertical position of the right rear wheel 14 by expansion and contraction, and the traveling vehicle body 1 is controlled to a desired left and right inclined posture regardless of the unevenness of the valley portion of the heel U. .

  A pendulum-type left / right tilt sensor 42 is provided on the right side of the main transmission case 12, and the left / right tilt sensor 42 detects the left / right tilt via a left / right tilt switching valve provided in the hydraulic pressure switching valve unit 24. The hydraulic cylinder 25 is operated to control the traveling vehicle body 1 to a desired left / right inclined posture.

  The planting device 19 according to the present embodiment includes a planting transmission case 26 in which power from the main transmission case 12 is provided on the rear side of the main transmission case 12 in order to plant seedlings one by one in a field paddle, It is configured to be transmitted and operated via a planting device drive case 27 attached to the planting transmission case 26.

  The planting device 19 includes a hook-shaped planting tool 28 with a sharp tip and an elevating link mechanism 29 that operates to raise and lower the planting tool 28. As shown in FIG. 1A, the tip of the planting tool 28 descends substantially vertically to the bottom dead center A as shown in FIG. The trajectory 17 that rises vertically while moving forward and reaches the top dead center C repeatedly operates. As the planting tool 28 moves rearward with respect to the aircraft, it moves up and down substantially vertically as the aircraft advances. The opening operation of the planting tool 28 is performed at an opening start point B that is substantially vertically raised.

  Under the above configuration, an operator who intends to use the tobacco seedling transplanting machine 10 according to the present embodiment has a pair of left and right movable spare seedlings stored below the pair of left and right fixed spare seedling stands 300L and 300R. The bases 350L and 350R are rotated around the cylindrical movable support members 310L and 310R, are deployed to the position shown in FIG. 3, and are temporarily fixed by a fixing pin (not shown) or the like. Then, tobacco seedlings are placed on these preliminary seedling stands to prepare for transplantation work.

  Then, an operator walking with the traveling vehicle body 1 travels one seedling prepared in advance in the movable spare seedling stand 350L (350R) and the fixed spare seedling stand 300L (300R) at the work position S (see FIG. 2). Grabbed by hand and put into supply cups 33 rotating in the direction of arrow A (see FIG. 2) as the aircraft is running.

  When the opening / closing lid of the supply cup 33 is opened at the predetermined position P, the seedling in the supply cup 33 is supplied to the lower planting tool 28. The planting tool 28 enters the soil up to the bottom dead center A of the operation locus 17 shown in FIG. 1A to form a planting hole, and the opening after the planting tool 28 comes out of the planting hole. At the start point B, it opens back and forth like a birdcage, and the seedling held inside falls into the planting hole.

  Then, the fertilizers weighed in the pair of left and right fertilizer feeding parts 420L and 420R are sown at a predetermined timing from the front hose 430L and the rear hose 430R respectively arranged in front and rear of the planting position.

Next, the configuration of the seedling supply unit 31 and the operation of supplying the seedling from the seedling supply unit 31 to the planting tool 28 will be described.
4A is a bottom view of the seedling supply unit 31 as viewed from below, and FIG. 4B is a partially transparent top view of the seedling supply unit 31 as viewed from above. FIG. 5 is a side cross-sectional view illustrating the attachment structure of the seedling supply unit 31, and shows a cross section passing through the rotation center of the supply turntable 32.

As shown in FIG. 2, the seedling supply unit 31 is operated by the power from the planting transmission case 26 being transmitted by the supply unit drive shaft 77.
The seedling supply unit 31 includes a rotatable supply turntable 32 that is provided above the planting device 19 and that is fixedly arranged in a loop through eight supply cups 33 having openings at the upper and lower ends. A character-shaped supply cup opening / closing guide 35 and a rotation drive mechanism 78 for rotating the supply turntable 32 counterclockwise are provided.

  As shown in FIG. 5, the supply turntable 32 is a tray-like member whose outer peripheral edge is bent downward, and both ends are open to eight holes that are opened at equal intervals near the outer periphery of the circular flat portion. The substantially cylindrical supply cups 33 are fixed through. A supply drive rotating shaft 122 that rotates the supply turntable 32 counterclockwise by the rotational force from the rotation drive mechanism 78 is fixedly disposed at the center of the supply turntable 32.

  The rotation drive mechanism 78 is fixed to a support column 39 fixed to the airframe and is fixed to an auxiliary plate 79. The auxiliary plate 79 is fixed to the main frame 22 via an auxiliary plate support plate 132 fixed to the main frame 22.

  And as shown to Fig.4 (a), the opening / closing lid | cover 34 which can be moved to an up-down direction is provided in the bottom part of each supply cup 33, respectively. Then, below each supply cup 33, the supply cup 33 is only provided when the supply cup 33 comes to a predetermined position P, which is a position above the planting tool 28, by the rotation of the supply turntable 32 in the direction of arrow A. A substantially C-shaped supply cup opening / closing guide 35, which is partially cut out of an annular shape, is fixed to a support column 39 so that the opening / closing lid 34 at the bottom of the opening is opened. The supply cup opening / closing guide 35 restricts the opening / closing lid 34 from being opened at a position other than the predetermined position P by contacting and supporting the opening / closing lid 34 from below.

  For the seedlings, an operator who walks with the traveling of the aircraft grabs the seedlings in the movable preliminary seedling stand 350L (350R) and the fixed preliminary seedling stand 300L (300R) one by one. Each is put into the supply cup 33 rotating in the direction.

  When the open / close lid 34 of the supply cup 33 is opened at the predetermined position P, the seedling in the supply cup 33 is supplied to the lower planting tool 28. The planting tool 28 penetrates to a predetermined depth in the soil to the bottom dead center A of the operation locus 17 shown in FIG. 1 (a) to make a planting hole, and at the opening start point B in the middle of ascent, Open back and forth like a cocoon and drop and plant the seedlings held inside.

Next, the planting device 19 will be described in detail.
FIG. 6 shows a side view of the planting transmission case of the present embodiment, FIG. 7 shows a side view of the planting device drive case of the present embodiment, and FIG. 8 shows the planting transmission case of the present embodiment. A sectional development top view is shown.

  As shown in FIG. 8, the planting transmission case 26 includes a swing cam drive shaft 88 of the planting device 19 and a drive rotation shaft 120 of the seedling supply unit 31, and the input shaft 193 from the rear surface of the main transmission case 12. Power is input into the planting transmission case 26.

  The transmission in the planting transmission case 26 will be described. The power is transmitted from the input shaft 193 in the front-rear direction to the first shaft 195 in the left-right direction via the pair of bevel gears 194a and 194b. The input shaft 193 is provided with a safety clutch 196 that cuts the power with a load torque greater than a predetermined value just before the planting transmission case 26, and an excessive operating load is generated on the planting device 19 due to a mechanical lock or the like. Power is cut off by the safety clutch 196 to prevent the planting transmission mechanism including the planting device 19 and the planting transmission case 26 from being damaged.

  A first drive sprocket 197 that rotates integrally with the first shaft 195 is provided on the first shaft 195, and is transmitted from the first drive sprocket 197 to the first driven sprocket 199 via the first transmission chain 198. 199 is transmitted to the second shaft 200 in the left-right direction that rotates integrally with 199.

The rotation of the second shaft 200 is transmitted to the swing cam drive shaft 88 via the intermittent clutch 88a by the second transmission chain 113, and is transmitted to the inter-shaft transmission 110 by the third transmission chain 114.
The variable speed rotation of the inter-strain transmission 110 is input to the control side of the intermittent clutch 88a by driving the drive rotation shaft 120 of the seedling supply unit 31 through the planting clutch 157. Accordingly, the power shifted by the inter-strain transmission 110 is intermittently transmitted to the swing cam drive shaft 88 of the planting device 19 in accordance with the table drive of the seedling supply unit 31, and the lifting link mechanism 29 of the planting device 19 is To drive.

  In the inter-stock transmission 110, a driving-side small gear 110a, an intermediate gear 110b, and a large gear 110c and a driven-side small gear 110d, an intermediate gear 110e, and a large gear 110f are meshed with each other via counter gears, and Any one of the first inter-shift gear shift lever 112a and the driven small gear 110d, the medium gear 110e, and the large gear 110f that rotate one of the small gear 110a, medium gear 110b, and large gear 110c on the driving side together with the driving shaft 111a. An inter-stock shift second lever 112b is provided for integrally rotating the cam with the drive side shaft 111a. Therefore, the combination of the selection of the three gears on the driving side and the selection of the three gears on the driven side allows the gears to shift to 9 stages.

  Therefore, the inter-stock transmission device 110 can be changed to 27 speeds by changing the 9 speeds of the inter-gear transmission 110 and the 3 speeds of the planting speed, which is the speed of the advancing speed of the aircraft. The adaptability to the planting stock peculiar to the area is expanded, and a versatile seedling transplanter can be obtained.

  Further, as shown in FIG. 9, the outermost surface portion 158a of the passive portion 158 of the planting clutch 157 is provided with two first rotation restriction grooves 159a and second rotation restriction grooves 159b, and the grooves 159a, 159b. When the tip of the locking member 160 is engaged, the drive of the swing cam drive shaft 88 is stopped against the transmission of the planting clutch 157. On the other hand, the stop timing shaft 156 is provided with an unlocking tool 161 that rotates integrally with the shaft 156, and the engagement releasing tool 161 abuts on the locking tool 160 as the stop timing shaft 156 rotates. The stopper 160 is rotated to disengage the tip of the arm 160 from the first rotation restricting groove 159a or the second rotation restricting groove 159b, and the swing cam is driven by the transmission of the planting clutch 157. The shaft 88 is driven.

  Therefore, the rotation of the swing cam drive shaft 88 stops while the locking member 160 is locked in the first rotation restricting groove 159a, and the stop timing shaft 156 rotates once to engage with the first rotation restricting groove 159a. When the locking of the stopper 160 is released, the swing cam drive shaft 88 rotates and rotates again until the second rotation restricting groove 159b and the locking tool 160 are locked.

  When the passive portion 158 of the planting clutch 157 rotates, the distal end portion of the locking tool 160 engages with another first rotation restriction groove 159a or the second rotation restriction groove 159b again to drive the swing cam. The driving of the shaft 88 is stopped. The locking member 160 is urged by a planting transmission restriction spring 162 provided in the planting device drive case 27 so that the tip part rotates to the side engaged with the planting transmission regulation grooves 159a and 159b. ing.

  Therefore, for each rotation of the passive portion 158, that is, the planting clutch shaft 157, the front opening / closing drive cam 100 rotates once so that the planting device 19 plants one seedling, and the first rotation regulating groove The stop at 159a is the first stop position, and the stop at the second rotation restricting groove 159b is the seedling supply standby position.

  It should be noted that two stop release tools 161 are provided on the stop timing shaft 156 so that the engagement between the first rotation restriction groove 159a and the second rotation restriction groove 159b is released by one rotation of the stop timing shaft 156. In addition, it is possible to give one stop timing in one cycle of raising and lowering the planting tool 28.

  And since the space | interval of the 1st rotation control groove | channel 159a and the 2nd rotation control groove | channel 159b is made narrow in the rotation direction of the planting clutch axis | shaft 157, the two latch release tools 161 are attached to the stop timing axis | shaft 156. When provided, the movement time from the first stop position to the seedling supply standby position is shortened.

  Further, the planting clutch 157 is provided with a first restriction disk provided with only the first rotation restriction groove 159a and a second restriction disk provided with the first rotation restriction groove 159a and the second rotation restriction groove 159b. The stop timing shaft 156 provided with the lock release tool 161 is axially slid, and the lock release tool 161 is locked to the second restriction disk from the state where the lock release tool 161 is locked to the first restriction disk. If you do, you can change the planting stock to half.

  If a planting clutch lever is provided, and the planting clutch lever is operated, the locking releaser 161 slides and locks into the second rotation restricting groove 159b, so that the planting interval is halved. The tool 28 can always be stopped at the seedling supply standby position.

  The left end portion of the swing cam drive shaft 88 protrudes from the planting transmission case 26, passes through the planting device drive case 27 fixed to the left side surface of the planting transmission case 26, and further drives the planting device. The case 27 protrudes from the left side surface.

  In the planting device drive case 27, as shown in FIG. 7, a third drive sprocket 218 that rotates integrally with the swing cam drive shaft 88 is provided, and the third driven sprocket 218 is passed through the third chain 107 from the third drive sprocket 218. Transmission to the sprocket 220 causes the third driven sprocket 220 and a crank arm drive shaft 89 to be described later to rotate integrally. The crank arm drive shaft 89 is disposed behind the swing cam drive shaft 88 at the same height as the swing cam drive shaft 88. Further, a plate spring 219 that contacts the third chain 107 and applies tension to the third chain 107 is provided above the third chain 107.

  Further, the right end portion of the drive rotating shaft 120 is configured to be transmitted to the supply portion drive shaft 77 projecting to the rear side of the planting transmission case 26 via a pair of bevel gears 221. The seedling supply unit 31 is driven and rotated by transmission from the supply unit drive shaft 77.

  As shown in FIG. 6, the arrangement of the transmission shaft in the planting transmission case 26 as viewed from the side is such that the second shaft 200 is arranged on the rear side and the upper side of the first shaft 195, and the rear of the second shaft 200 ( A third shaft 203 is disposed at a position substantially the same height as the second shaft 200, and a fourth shaft (swing cam drive shaft) 88 is disposed above the third shaft 203 (substantially the same longitudinal position as the third shaft 203). Is arranged. The planting transmission case 26 is formed with a recess 223 between the second shaft 200 and the fourth shaft 88 on the upper front side of the third shaft 203 and on the front upper surface of the planting transmission case 26.

  1, an airframe cover 224 is provided to cover the engine 11 and the main transmission case 12, and a rear portion 224a of the airframe cover 224 is inserted into the recess 223 of the planting transmission case 26. Yes. The body cover 224 is formed with an extension portion 224b that extends to the rear side of the recess 223 of the planting transmission case 26 on one of the left and right sides (left side) of the planting transmission case 26, and the extension portion 224b is connected to the lift link mechanism 29. Is disposed above the front portion (a front swing arm 80 and a left rear swing arm 81 to be described later).

Next, the structure which operates the planting tool 28 of the planting apparatus 19 and its operation | movement are demonstrated.
10 and 11 show a perspective view of the planting device 19 viewed from the left front and a perspective view viewed from the right rear, respectively. FIG. 12 shows a side view of the planting device 19.

  The planting device 19 receives a seedling from a receiving opening opened above the seedling guide 108, and has a cup-shaped planting tool 28 with a pointed tip that can be opened and closed forward and backward, and a planting device 28 that drives the planting tool 28 up and down. It is comprised from the raising / lowering link mechanism 29 provided in the attachment apparatus drive case 27. FIG.

  The planting tool 28 holds the seedling inside with the cup-shaped lower part with a sharp tip closed, and forms a planting hole by piercing the scissors in the descending process of the planting locus 17, This is a configuration in which the seedling is dropped and planted in the planting hole by opening back and forth at the opening start point B that has come out of the planting hole and slightly raised. A seedling guide 108 is attached to the upper part of the planting tool 28 so that the seedling falling from the supply turntable 32 surely enters the planting tool 28.

  The elevating link mechanism 29 is pivotally supported on the swing cam drive shaft 88 on the left side of the planting device drive case 27, and the lower end is pivotally connected to the connection support plate 94 by the lower front shaft 91. An upper end is fixed to an upper rear shaft 90 that is rotatable with respect to the connected front swing arm 80 and the planting device drive case 27, and a lower end is rotatably connected to the connection support plate 94 with the lower rear shaft 93. It is connected to a front swing arm 80 and a left rear swing arm 81 provided parallel to the front and rear. The upper rear shaft 90 has the other end protruding to the right side of the planting device drive case 27, and the upper end of the right rear swing arm 99 is fixed to the right side of the planting device drive case 27.

  The planting device drive case 27 transmits the power output from the planting transmission case 26, penetrates the swing cam drive shaft 88 provided to project to the left and the planting device drive case 27, and projects to the left and right sides. The crank arm drive shaft 89 provided is driven.

  Further, the front end is pivotally supported by the upper shaft 92 and the lower rear shaft 93 of the connection support plate 94, respectively, and the rear end is pivoted by the rotation upper shaft 95 and the rotation lower shaft 96 of the planting tool 28, respectively. A parallel upper arm 82 and a lower left arm 83 are connected freely. On the right side of the planting device drive case 27, the front end is pivotally supported by the lower end portion of the right rear swing arm 99 and the rear end is pivotally connected to the right side of the planting tool 28. Arm 97 is provided.

  The lower right arm 97 is arranged in parallel with the lower left arm 83, and is connected to the lower left arm 83 by a left and right connecting rod 98 pivotally supported at both ends by the lower left arm 83 and the lower right arm 97, respectively.

  A crank arm 85 having a base fixed to a crank arm drive shaft 89 that protrudes to the right from the planting device drive case 27, and a rotary connecting shaft 106 provided at the tip of the crank arm 85 are pivotally connected to one end. Is provided with a connecting arm 86 whose other end is connected to a middle portion of the left and right connecting rod 98. The left and right connecting rods 98 are rotatably connected with respect to the connecting arm 86.

  In addition, a rocking drive cam 84 that is fixed to a rocking cam drive shaft 88 that protrudes to the left from the planting device drive case 27 and rotates, and that contacts the peripheral edge of the rocking drive cam 84, the left A rotation roller 87 is provided in the middle of the rear swing arm 81 near the upper rear shaft 90 so as to be rotatable.

  Further, provided between the support pin provided in the planting transmission case 26 and the lower end portion of the left rear swing arm 81, the front swing arm 80 and the left rear swing arm 81 are biased toward the front of the body. In addition, a tension spring 167 (see FIG. 13A) for bringing the swing drive cam 84 and the rotation roller 87 into contact with each other is provided.

A counter arm 104 used for opening and closing the planting tool 28 is pivotally supported on a pivot upper shaft 95 to which one end of the upper arm 82 is connected.
The open / close arm 101 is pivotally supported by an upper shaft 92 to which the other end of the upper arm 82 is connected. The open / close arm 101 and the counter arm 104 are connected by a connecting rod 103. . A pin 105 is erected on the counter arm 104, and a hole provided in an opening / closing rod 231 connected to a holder portion of the planting tool 28 is loosely fitted.

  In addition, an opening / closing drive cam 100 which is fixed to the swing cam drive shaft 88 and rotates together with the swing drive cam 84 is provided. A roller 102 is provided. When the opening / closing drive cam 100 rotates in accordance with the rotation of the swing cam drive shaft 88, the opening / closing arm 101 rotates upon contact with the opening / closing roller 102, and is planted through the connecting rod 103, the counter arm 104, and the opening / closing rod 231. The left member 109L and the right holder 291R of the attachment 28 are opened.

  The position of the first rotation restricting groove 159a where the planting clutch 157 stops is a position where the opening / closing arm 101 moves away from the opening / closing roller 102 when the opening / closing driving cam 100 rotates and contacts the opening / closing roller 102. Thus, the closing force of the left member 109L and the right holder 291R by its own weight becomes an auxiliary force for driving the swing cam drive shaft 88, and the planting tool 28 is easily raised.

With this configuration, the planting device 19 of the present embodiment operates such that the tip of the planting device 19 draws a locus 17 as shown in FIG.
Fig.13 (a)-FIG.13 (d) have shown the side view of the planting apparatus 19 in each position in planting operation | movement. 13A shows a side view at the top dead center C, and FIG. 13C shows a side view at the bottom dead center A. FIG. FIG. 13B shows a side view when the vehicle is descending from the top dead center C toward the bottom dead center A, and FIG. 13D is a diagram showing the rise from the bottom dead center A toward the top dead center C. The side view at the time of doing is shown.

  As the swing cam drive shaft 88 rotates, the swing drive cam 84 fixed to the swing cam drive shaft 88 rotates together with the swing cam drive shaft 88 and rotates in contact with the swing drive cam 84. The left rear swing arm 81 and the front swing arm 80 swing back and forth via the roller 87. At this time, the right rear swing arm 99 connected to the left rear swing arm 81 by the upper rear shaft 90 also swings back and forth together with the left rear swing arm 81.

  On the other hand, when the crank arm drive shaft 89 rotates, the crank arm 85 fixed to the crank arm drive shaft 89 rotates together with the crank arm drive shaft 89, and the lower left arm via the connecting arm 86 and the left and right connecting rods 98. 83 and the lower right arm 97 swing up and down, and the upper arm 82 swings up and down together with the lower left arm 83.

  Accordingly, the front swing arm 80, the left rear swing arm 81, the right rear swing arm 99, the upper arm 82, the lower left arm 83, and the lower right arm 97 are all parallel link mechanisms. Is operated with the lower end of the planting locus 17 being drawn, and the seedling received in the planting tool 28 can be planted on the ridge U in an appropriate posture.

  As shown in FIG. 12, the planting device 19 has a slightly lower position of the rotating lower shaft 96 connected to the lower left arm 83 than the rotating upper shaft 95 connected to the upper arm 82 in the planting tool 28. Arranged forward. Thereby, when the planting tool 28 is lowered, it is possible to suppress the interval between the upper arm 82 and the lower left arm 83 from being narrowed. Further, when the planting tool 28 is in the vicinity of the bottom dead center A, the distance between the upper arm 82 and the lower left arm 83 can be maintained wide, so that stable planting can be performed without rattling in the planting state.

  At a position where the seedling is supplied to the planting tool 28, that is, at a position where the swing drive cam 84 is in contact with the rotation roller 87 when the seedling is near the top dead center C of the locus 17 where the planting tool 28 operates. In order to make the change in the diameter of the swing drive cam 84 small, the swing drive cam 84 contacts the rotating roller 87 when the seedling is planted, that is, when the planting tool 28 is in the vicinity of the bottom dead center A. The shape of the swing drive cam 84 and the direction in which the swing drive cam 84 is fixed to the swing cam drive shaft 88 are set so that the change in the diameter of the swing drive cam 84 at the position is large. .

  Depending on the shape of the swing drive cam 84 and the direction fixed to the swing cam drive shaft 88, the moving speed of the tip of the planting tool 28 is much slower when the seedling is supplied than when the seedling is planted. can do.

  At the top dead center C and the bottom dead center A, the crank arm 85 and the connecting arm 86 are linearly overlapped in the vertical direction, and the front swing arm 80, the left rear swing arm 81, and the right rear swing The configuration is parallel to the moving arm 99. Therefore, when the seedling is supplied to the planting tool 28, that is, when the planting tool 28 is near the top dead center C, and when the seedling is planted, that is, when the planting tool 28 is near the bottom dead center A. The direction of the crank arm 85 is set so that the change in the vertical position of the connecting arm 86 due to the rotation of the crank arm 85 is small. With this configuration, during the planting operation, the tip of the planting tool 28 is operated so as to draw a loop-shaped locus 17, and the moving speed of the planting tool 28 in the vicinity of top dead center C (position where the seedling is supplied). However, it is set as the structure which becomes slower than the moving speed in the bottom dead center A (position where a seedling is planted). Therefore, the transplant object can be more reliably supplied to the planting tool 28.

  In addition, when the tip of the planting tool 28 is present at a position for planting the transplant object, the crank arm 85 and the connecting arm 86 are linearly overlapped, so that the vertical movement by the crank arm 85 and the inclination of the connecting arm 86 are caused. The vertical movement matches, and the planting tool 28 can move faster. Further, when the tip of the planting tool 28 exists at a position for planting a transplant object, the crank arm 85 is parallel to the front swing arm 80, the left rear swing arm 81, and the right rear swing arm 99. Therefore, the vertical movement of the front swing arm 80, the left rear swing arm 81, and the right rear swing arm 99 is reduced, and the planting tool 28 is moved faster by the vertical movement by the crank arm 85 and the connecting arm 86. Can do.

  Further, the trajectory 17 drawn by the tip of the planting tool 28 has the maximum front-rear width when planting, that is, the front-back width is maximum below the center of the vertical movement width of the planting tool 28. It becomes the composition which becomes. Since the front-rear width of the static locus 17 is the maximum at a position below the center position of the vertical movement width of the tip of the planting tool 28, the movement locus during running of the transplanter is a locus that rises and falls linearly, A transplant object can be planted neatly.

  A parallel link mechanism including the upper arm 82, the lower left arm 83, and the lower right arm 97 of the planting device 19 is operated by one crank arm 85. In order to drive with the uniaxial crank arm 85, the planting malfunction by the backlash of a transmission system can be suppressed.

  Further, the elevating link mechanism 29 is moved back and forth by a swing drive cam 84. Since the swing drive cam 84 is used, the front-rear width of the locus 17 drawn by the tip of the planting tool 28 can be freely set.

  Further, the swing roller 87 that contacts the swing drive cam 84 is positioned at a position closer to the upper rear shaft 90 than the center position in the longitudinal direction of the left rear swing arm 81, that is, a swing that is a fulcrum of the front swing arm 80. Since the cam drive shaft 88 is arranged at a position close to the cam drive shaft 88, the distance from the fulcrum of the swing drive cam 84 can be shortened, and the swing drive cam 84 can be made small. Since the swing drive cam 84 can be made small, the planting device 19 can be downsized.

  In addition, since the pulling force is applied to the left rear swing arm 81 by the tension spring 167, the planting tool 28 is planted by its own weight when the planting tool 28 is lowered toward the planting position. It can prevent that the attachment tool 28 descend | falls rapidly and the operating speed of the planting tool 28 on the locus | trajectory 17 becomes inadequate. Further, the pulling force by the tension spring 167 assists the planting tool 28 to rise from the bottom dead center A against the weight of the planting tool 28, so that the planting tool 28 can be operated stably. Can do.

  Further, by rotating the crank arm 85 counterclockwise in FIG. 6 as viewed from the right side, the crank arm 85 rotates in the reverse direction with reference to the loop-shaped locus 17 on which the planting tool 28 operates. Therefore, the moving speed of the planting tool 28 in the vicinity of the top dead center C of the locus 17 can be easily reduced. By reducing the moving speed of the planting tool 28 in the vicinity of the top dead center C, the seedling can be supplied to the planting tool 28 more reliably.

  In the vicinity of the bottom dead center A, the front swing arm 80, the left rear swing arm 81, and the right rear swing arm 99 are rotated from the front to the rear in response to the rotation of the front end of the crank arm 85. The connecting shaft 106 rotates from the rear to the front. Since the front swing arm 80, the left rear swing arm 81, and the right rear swing arm 99 operate in opposition to the crank arm 85, the vertical movement speed of the planting tool 28 can be increased. Even if the stock changes, the change in the movement locus of the tip of the planting tool 28 in the soil taking into account the traveling of the aircraft is small.

  Further, in the vicinity of the bottom dead center A, the crank arm 85 and the connecting arm 86 are in a straight line in the vertical direction or a direction close to the vertical direction, so that the vertical movement by the crank arm 85 coincides with the vertical movement by the inclination of the connecting arm 86. Therefore, the raising speed of the planting tool 28 can be increased.

  Further, in the vicinity of the bottom dead center A, the front swing arm 80, the left rear swing arm 81, and the right rear swing arm 99 are parallel to the crank arm 85 and the connecting arm 86, so that the front swing arm 80, the vertical movement of the left rear swing arm 81 and the right rear swing arm 99 is reduced, and the vertical movement by the crank arm 85 and the connecting arm 86 can raise the planting tool 28 faster.

Next, an opening / closing mechanism for opening and closing the planting tool 28 and its operation will be described.
As shown in FIG. 10, a counter arm 104 used for opening and closing the planting tool 28 is rotatably provided on a rotating upper shaft 95 provided at one end (rear end) of the upper arm 82. An open / close arm 101 is rotatably provided on an upper shaft 92 provided at the other end (front end) of the upper arm 82, and the open / close arm 101 and the counter arm 104 are connected by a connecting rod 103. The counter arm 104 is provided with a pin 105.

  In addition, an opening / closing drive cam 100 that is fixed to the swing cam drive shaft 88 and rotates together with the swing drive cam 84 is provided, and an opening / closing roller 102 that contacts the peripheral edge of the open / close drive cam 100 is rotated around the opening / closing arm 101. It is provided freely. As the swing cam drive shaft 88 rotates, the open / close drive cam 100 rotates to operate the open / close arm 101 via the open / close roller 102.

  Regarding the opening / closing operation of the planting tool 28, the counter arm 104 operates in parallel with the opening / closing arm 101 via the connecting rod 103, and the opening / closing arm 101 is operated by the opening / closing driving cam 100 via the opening / closing roller 102. Therefore, the opening / closing timing and the opening / closing amount can be set with high accuracy by the opening / closing driving cam 100 having a simple shape.

  In the positions shown in FIGS. 13A and 13B, the opening / closing driving cam 100 is not in contact with the opening / closing roller 102, so that the upper dead center C and the top dead center C are lowered to the bottom dead center A. The state where the lower portion of the planting tool 28 is closed is maintained up to the opening start point B that rises slightly.

  At the opening start point B slightly elevated from the bottom dead center A in FIG. 13 (c), the opening / closing driving cam 100 starts to contact the opening / closing roller 102 and opens, and the position of FIG. The opening / closing drive cam 100 is kept in contact with the opening / closing roller 102 and is opened.

  Therefore, the planting tool 28 is maintained in a state where the lower part is closed and is slightly raised from the bottom dead center A in the process of descending from the vicinity of the top dead center C of the locus 17 to the bottom dead center A. The lower part begins to open and continues to rise while the lower part is open.

  The lower part of the planting tool 28 is composed of a front member 28F and a rear member 28R. When the planting tool 28 reaches the opening start point B, the front ends of the front member 28F and the rear member 28R are separated from each other. Open the seedlings, drop them into the planting holes and plant them.

In FIG. 14, the tip locus 17 of the planting tool 28 is indicated by a one-dot chain line.
The front member 28 </ b> F and the rear member 28 </ b> R are closed to the opening start point B that has risen slightly after passing through the bottom dead center A, start to open back and forth at the opening start point B, fully open, and close immediately before the top dead center C. That is, when the planting tool 28 is closed, it is inserted into the ridge U to form a planting hole, and the opening start point B immediately before the tip is extracted from the ridge U or pulled out from the bottom dead center A. Then, the front member 28F and the rear member 28R open back and forth to drop the seedling into the planting hole.

  When the planting tool 28 is inserted into the ridge U and moves forward, the front side of the planting hole is pressed against the outer surface of the front member 28F. When the planting tool 28 is pulled out from the ridge U, the planting tool 28 is pulled back slightly to the rear of the planting hole. The front member 28F and the rear member 28R open forward and backward at the position directly above.

  In the embodiment shown in FIG. 15, the front member 28 </ b> F is fixed to the planting case 174, and the operating arm 173 with the rear member 28 </ b> R is pivotally supported by the pivot shaft 172 in front of the planting case 174. With the configuration in which the operating arm 173 is pulled up, the rear member 28R is opened rearward while the front member 28F remains as it is at the bottom dead center A where the planting tool 28 is inserted into the rod U. In this structure, since the front member 28F does not open forward, the front side of the planting hole is not broken.

  In the embodiment shown in FIG. 16, the front member 28F is pivotally supported on the planting case 174 by a front pivot shaft 168a, and the rear member 28R is pivoted on the planting case 174 by a rear pivot shaft 169a. The arm length of the front arm 168 that pivots back and forth and rotates integrally with the front member 28F is longer than the arm length of the rear arm 169 that rotates together with the rear member 28R. By connecting the rear arm 169 together to the operating rod 171 and pulling the operating rod 171 upward, the front member 28F is rotated slightly backward, and the rear member 28R is rotated largely rearward to open. With this configuration, even if the machine moves forward while the planting tool 28 is pulled out from the planting hole, the seedling slides on the inner surface of the front member 28F and falls from the tip so that the seedling enters the planting hole. Become.

  In the embodiment shown in FIG. 17, a planting case 174 has a pressing plate 175 provided with an inclined edge presser 176 surrounding the upper periphery of the front member 28F and the rear member 28R of the planting tool 28 via rods 178 and 178 via a spring 177. When the planting tool 28 is inserted into the ridge U to form the planting hole, the peripheral edge of the planting hole is pressed with the inclined edge pusher 176 so as not to collapse.

  In FIG. 19, the lifting link mechanism 29 of the planting tool 28 and the brake arm 46a of the brake drum 46 provided on the drive shaft of the traveling chain case 20 are linked by the brake cable 49 so that the planting tool 28 is inserted into the ridge U. Thus, while the planting hole is formed and the seedling is introduced, the traveling speed is reduced or stopped to prevent the planting hole from collapsing.

  FIGS. 20 to 22 show another embodiment of the supply cup, in which a plurality of seedling guides 30 that enter the inside of the outer periphery of the supply cup 33 are provided by springs 30a, and a wire 46 connected to the open / close lid 34 is used. When supplying the seedling with the open / close lid 34 closed, the seedling guide 30 enters the inside to narrow the passage of the seedling so that the seedling stands upright. When the open / close lid 34 is opened, the seedling guide 30 moves outside to widen the passage. The seedlings are easy to fall. The inner corner 30b of the seedling guide 30 is rounded to prevent the seedling from being caught.

  FIG. 23 shows another embodiment of an elevating link mechanism for raising and lowering the planting tool 28. An upper arm 187 and a lower arm 188 are connected to the planting tool 28, and a crank rod 182 pivotally supported at an intermediate portion of the left arm 188 is shown. The crank pin 182a is engaged with the elongated hole 181a of the crank plate 181 fixed to the drive shaft 180, and the crank pin 182a is pulled rearward and upward by a spring 189.

  With this configuration, when the drive shaft 180 rotates, the lower arm 188 moves up and down by the crank plate 181 and the crank rod 182, so that the planting tool 28 moves up and down, but when the planting tool 28 exceeds the bottom dead center A, the spring 189 The crank pin 182a pulled by the abrupt movement of the long hole 181a suddenly moves forward, the planting tool 28 opens linearly and rises up to the start point B or the top dead center C, and the planting tool 28 pierces. Do not break the planting hole. When the planting tool 28 reaches the top dead center C, the crank pin 182a moves rearward through the long hole 181a, but the planting tool 28 is stationary, and during this time, seedling is supplied from the supply cup 33 to the planting tool 28. To do.

  Further, the open / close cam 183 fixed to the drive shaft 180 is rotated to move the open / close arm 184 up and down via the roller 185, and the operating rod 171 of the planting tool 28 connected to the open / close arm 184 and the wire 186 is pulled. The planting tool 28 is opened at the position extracted from the planting hole.

A Bottom dead center U ２８ 28 Planting tool 28F Front member 28R Rear member 176 Inclined edge press

Claims (5)

  In the seedling transplanting machine that carries out planting by inserting a planting tool (28) containing seedlings into the field as the aircraft progresses, a planting hole is drilled in the field by lowering the planting tool (28). Transplantation characterized in that the lower part of the planting tool (28) opens back and forth at a position where the tool (28) has risen from the bottom dead center (A) to a predetermined height, and the seedling is inserted into the planting hole for planting. Machine.   In the process in which the planting tool (28) rises from the bottom dead center (A), the front member (28F) of the planting tool (28) does not move forward and the rear member (28R) moves backward to open. The transplanter according to claim 1.   The transplanting device according to claim 1, wherein the front member (28F) and the rear member (28R) are opened while moving the planting tool (28) from the bottom dead center (A). Machine.   An inclined edge pusher (176) inclined inward is provided around the upper portion of the planting tool (28), and a planting hole is drilled by lowering the planting tool (28), and the peripheral edge of the planting hole is inclined. The transplanter according to any one of claims 1 to 3, wherein the transplanter is pressed by a push (176).   In the transplanting machine in which the planting tool (28) moves up and down and plants the seedling while traveling across the ridge (U) between the front wheel (13) and the rear wheel (14), the front wheel (13) is supported vertically and left and right The transplanter according to any one of claims 1 to 4, wherein the front wheel (13) is tilted inward so that the left and right side surfaces of the rod (U) can be switched to a rolling state.

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