JP2015029451A - Transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transplanter which can form a proper planting hole which seldom collapses.SOLUTION: A seedling transplanter 10 comprises: a traveling vehicle body 1; a planting device 28 which is provided on the vehicle body 1 so as to be vertically moveable and plants a target for transplantation; a raising/lowering link mechanism 29 which vertically moves the planting device 28; and etc. The planting device 28 is configured to perform a procedure where the planting device 28 receives the target for plantation and moves downward, then forms a planting hole inside soil, after that, while traveling upward from the bottom dead center, opens the lower end side to drop the target for plantation into the planting hole.

Description

  The present invention relates to a transplanter for transplanting seedlings such as cigarettes, onions and lettuce, seed pods and the like to a field.

  A pair of left and right wheels provided across the heel is provided at the front of the aircraft, and a steering handle is provided at the rear of the aircraft so that the pilot can operate the vehicle while following the progression of the aircraft during walking. The machine is known.

  In the above seedling transplanter, the planting tool for planting the seedling in the field has a lower part composed of a left side member and a right side member, and when the planting tool descends, the distal ends of the left side member and the right side member are separated from each other. It is the structure which opens and then plants a seedling in a planting hole.

  That is, the left side member and the right side member open near the bottom dead center of the planting tool, plant the seedling in the planting hole, and then rise open and close before the seedling is supplied from the supply device side. Then, the next seedling is supplied into the planting tool.

JP 2013-90595 A

  However, in the conventional seedling transplanting machine described above, in the case of soil or the like where the cocoon is brittle, the planting hole may collapse due to the lower part of the planting tool opening at the bottom dead center, and the seedling cannot be planted properly. There was a problem.

  An object of the present invention is to provide a transplanter in which a planting hole is not easily broken and an appropriate planting hole can be formed in consideration of the problems of the conventional transplanter described above.

The first aspect of the present invention is
Traveling vehicle body (1),
A planting tool (28) that is provided on the traveling vehicle body (1) so as to be movable up and down, and for planting a transplant object;
A vertical movement mechanism (29, 82, 83, 97) for moving the planting tool (28) up and down;
The planting tool (28) receives a transplant object, moves downward, forms a planting hole in the soil, and then opens a lower end side while moving upward from the bottom dead center. A transplanting machine, wherein an object is dropped into the planting hole.

The second aspect of the present invention is
The transplanter (28) is the transplanter according to the first aspect of the present invention, wherein the lower end side is opened after the planting tool (28) is completely removed from the soil.

The third aspect of the present invention
The transplanting device according to the first or second aspect of the present invention, characterized in that the planting tool (28) has an upper end side dimension body portion (28a) and a lower end side sharp portion (28b). Machine.

The fourth aspect of the present invention is
On the outer peripheral side of the planting tool (28), provided with a punching tool (410) for making a hole in the surface of a strip-shaped sheet laid on the surface of the farm field,
The punching tool (410) moves up and down together with the planting tool (28), and when the lower end side of the planting tool is opened, the punching tool (410) is arranged so as not to contact the lower end side of the planting tool. The transplanter according to any one of the first to third aspects of the present invention is characterized in that there is a gap between them and is arranged so as to be shifted upward from the lower end side of the planting tool.

The fifth aspect of the present invention is
The vertical movement mechanism (29, 82, 83, 97) includes an input arm (101) disposed on the drive side, an output arm (104) connected to the planting tool (28), and the input arm (101). ) And a connecting rod (103) that connects the output arm (104), and the output arm (104) rotates as the input arm (101) rotates, thereby the planting tool ( 28) The transplanter according to any one of the first to fourth aspects of the present invention, which has an opening / closing mechanism (100, 101, 103, 104) for opening and closing.

  According to the first aspect of the present invention, the planting hole can be formed small. For example, it is possible to prevent the planting hole from collapsing when the lower part of the planting tool (28) is opened in the soil with brittle soil or the like.

  Further, according to the second aspect of the present invention, since the lower part of the planting tool (28) does not open in the soil, it is possible to completely prevent the planting hole from collapsing by opening the lower part of the planting tool (28). I can do it.

  In addition, according to the third aspect of the present invention, it is possible to accurately enter the soil at the pointed portion (28b) and to form a planting hole having substantially the same size in the vertical direction at the size trunk portion (28a), thereby improving the planting posture. . Moreover, a deep and thin planting hole can be formed, and a necessary planting depth can be obtained.

  Further, according to the fourth aspect of the present invention, the vertical movement mechanism (29, 82, 83, 97) can be shared by the planting tool (28) and the punching tool (410). The lower part of the planting tool (28) can be opened and closed without hindrance.

  According to the fifth aspect of the present invention, the opening / closing timing of the planting tool (28) can be varied by adjusting the opening / closing mechanism (100, 101, 103, 104).

The left view of the tobacco seedling transplanter of embodiment of this invention The top view of the tobacco seedling transplanter of embodiment of this invention (A): Bottom view of the seedling supply device of the embodiment of the present invention as seen from below, (b): Partially transparent top view of the seedling supply device of the embodiment of the present invention Side sectional view explaining attachment structure of seedling supply device of an embodiment of the invention The perspective view seen from the left front of the planting apparatus of embodiment of this invention The perspective view seen from the right rear of the planting apparatus of embodiment of this invention The side view of the planting apparatus of embodiment of this invention (A)-(d): Side view of the planting apparatus in each position during planting operation of the embodiment of the present invention The figure explaining the arrangement position of each drive shaft in the planting device drive case of an embodiment of the invention (A): The figure explaining the movement locus | trajectory of the front-end | tip part of a planting tool when looking at the planting tool from back of embodiment of this invention, (b): The right side member shown to Fig.10 (a) The schematic diagram which shows the operation | movement condition of a planting tool when the front-end | tip is in position Y10-Y14 (A): Plan view of the left side member of the planting tool of the embodiment of the present invention, (b): Left side view of the left side member of the planting tool, (c): The left side member was seen from the rear of the fuselage. Rear view The left view which showed typically the structure provided with the nozzle for watering in the planting tool of embodiment of this invention (A): Left side view schematically showing a configuration in which the planting tool according to the embodiment of the present invention is provided with a heel surface pressure plate. (B): The operation of the ridge surface pressure plate in FIG. 13 (a) is described. Figure to The schematic perspective view of the multi-sheet cutter used for the seedling transplanting machine of embodiment of this invention (A): Schematic rear view of a planting tool provided with a thermoelectric multi-sheet cutter used in the seedling transplanter of the embodiment of the present invention, (b): Schematic left side of a planting tool provided with a thermoelectric multi-sheet cutter (C) is a schematic plan view of a planting tool provided with a thermoelectric multi-sheet cutter (A): Perspective view of a multi-sheet cutter body used in the seedling transplanter of the embodiment of the present invention, (b): Schematic cross-sectional view of the multi-sheet cutter body, (c): Inside of the multi-sheet cutter body The top view which showed typically the electric heating part arranged in Side view of the presser vertical movement mechanism portion used in the seedling transplanting machine of the embodiment of the present invention (A): Plan view of a presser used in the seedling transplanter of the embodiment of the present invention, (b): Plane view explaining the positional relationship between the presser and the ground contact position detector (A): Operation explanatory diagram of a planting tool with a shingling plate, which is one embodiment of the invention related to the planting tool of the present invention, (b): a pair of left and right shingder plates shown in FIG. 19 (a) Operation explanatory diagram schematically showing the type of operation with a roller at the tip (A)-(d): The figure explaining the modification of the mulching board in the planting tool with an earthing board of the invention relevant to the planting tool of this invention. (A)-(c): Schematic schematic diagram explaining the meshing transmission type continuously variable transmission mechanism FIG. 21 (a) is a schematic plan view of the variable diameter drive shaft. (A): It is a modified example of the planting tool of the present invention, and is a rear view when the left side member of the planting tool of the same type with the length of the body part and the pointed part is viewed from the rear of the fuselage, (B) Right side view of the left side member of the planting tool (A): It is another modification of the planting tool of the present invention, and is a rear view of the left side member of the planting tool of the same type with the same length of the size trunk part and the pointed part when viewed from the rear of the fuselage. (B) Right side view of the left side member of the planting tool (A): Still another modified example of the planting tool of the present invention, the rear surface of the left side member of the planting tool of the same type with the same length of the size trunk and the pointed part as seen from the rear of the fuselage Figure, (b) Right side view of the left side member of the planting tool

  Hereinafter, an embodiment of a transplanter of the present invention will be described with reference to the drawings.

(Embodiment)
First, the configuration and operation of the tobacco seedling transplanter according to the present embodiment will be described with reference to FIGS. 1 and 2.

  FIG. 1 is a side view of a tobacco seedling transplanter 10 for transplanting tobacco seedlings as an example of the transplanter of the present invention, and FIG. 2 is a plan view of the tobacco seedling transplanter 10. In FIG. 2, the fixed preliminary seedling stands 300L and 300R and the movable preliminary seedling stands 350L and 350R are indicated by two-dot chain lines.

  In the following description, the front part of the tobacco seedling transplanter 10 is the side on which the engine 11 is arranged, and the rear part is the side on which the steering handle 16 is arranged. 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.

  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 device 31 is provided. Further, the planting device 19 includes a planting tool 28 that moves up and down along the locus 17, and a pressure reducing wheel 15 is disposed behind the planting tool 28. The seedling planting depth by the planting tool 28 can be changed by adjusting the height of the bottom dead center by operating the planting depth lever 49.

  Further, on the front side of the seedling supply device 31 and on the left and right sides of the traveling vehicle body 1, a pair of left and right rectangular fixed preliminary seedling stands 300L and 300R (indicated by two-dot chain lines in FIG. 2) on which tobacco seedlings are placed. Are fixedly arranged.

  When not in use, the pair of left and right fixed preliminary seedling stands 300L and 300R can be stored along the longitudinal direction of the fixed preliminary seedling stands 300L and 300R in a plan view. A pair of left and right rectangular movable spare seedling stands 350L and 350R (indicated by two-dot chain lines in FIG. 2), which are configured to be deployed in positions that do not overlap with the spare seedling stands 300L and 300R in plan view. Are arranged to be rotatable.

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

  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 machine body. 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. 1, the tip of the planting tool 28 is lowered on the front side and rises on the rear side as shown in FIG. 1, and the trajectory has a shape in which the width in the front-rear direction is larger in the lower part than in the upper part. It draws 17 and operates repeatedly in the direction of the arrow in the figure.

  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 developed as shown in FIG. 2 and temporarily fixed with fixing pins (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 an opening / closing lid 34 (see FIG. 3) of the supply cup 33 described later opens at a predetermined position P (see FIG. 2), the seedling in the supply cup 33 falls by its own weight and is supplied to the planting tool 28 below. . When the planting tool 28 reaches the bottom dead center of the operation locus 17 shown in FIG. 1, the planting tool 28 enters the soil to a predetermined depth to form a planting hole, and then rises so that the tip of the planting tool 28 is in the soil. After completely coming out of it, it opens left and right like a bird cage. Thereby, the seedling held in the planting tool 28 falls into the planting hole due to its own weight, the planting hole is closed by the pressure reducing wheel 15, and the planting of the seedling is completed. The operation of the planting tool 28 will be further described later with reference to FIG.

  In addition, the fertilizer measured by the pair of left and right fertilizer feeding parts 420L and 420R is sown at a predetermined timing from the front hose 421L and the rear hose 421R respectively arranged at the front and rear of the planting position.

  Next, the configuration of the seedling supply device 31 and the operation of supplying the seedling from the seedling supply device 31 to the planting tool 28 will be described more specifically with reference to the drawings.

  FIG. 3A is a bottom view of the seedling supply device 31 as viewed from below, and FIG. 3B is a partially transparent top view of the seedling supply device 31 as viewed from above.

  FIG. 4 is a side sectional view for explaining the mounting structure of the seedling supply device 31 and shows a cross section passing through the rotation center of the supply turntable 32.

  As shown in FIG. 2, the seedling supply device 31 operates by transmitting the power from the turntable drive case 38 through the rotational force transmission member 77.

  The seedling supply device 31 includes a rotatable supply turntable 32 provided above the planting device 19, which is configured to pass through eight supply cups 33 having openings at the upper and lower ends and fixedly arranged in a loop. 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. 4, the supply turntable 32 is a tray-like member whose outer peripheral edge is bent downward, and both ends are opened 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 rotation shaft 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.3 (a), the opening-and-closing lid 34 which can be moved to an up-down direction is provided in the bottom part of each supply cup 33, respectively.

  Further, as shown in FIG. 3A, below each supply cup 33, the supply cup 33 is positioned 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 with an annular part cut out is fixed to the column 39 so that the opening / closing lid 34 at the bottom of the supply cup 33 is opened only when it comes to. 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.

  In the tobacco seedling transplanting machine 10 according to the present embodiment, an operator who walks with the traveling of the machine body manually puts the seedlings in the movable spare seedling stand 350L (350R) and the fixed spare seedling stand 300L (300R) one by one. Grabbed and put into supply cups 33 rotating in the direction of arrow A according to the travel of the aircraft.

  When the opening / closing lid 34 of the supply cup 33 is opened at the predetermined position P, the seedlings in the supply cup 33 are supplied to the lower planting tool 28. The planting tool 28 enters the soil to a predetermined depth when it reaches the bottom dead center of the operation locus 17 shown in FIG. Drop seedlings and plant them.

  Next, the detailed configuration and operation of the planting device 19 of the tobacco seedling transplanter 10 shown in FIG. 1 will be described.

  5 and 6 show a perspective view of the planting device 19 as viewed from the left front and a perspective view as viewed from the right rear, respectively. Moreover, the left view of the planting apparatus 19 is shown in FIG.

  As shown in FIGS. 5 to 7, the planting device 19 receives a seedling from an opening formed in the upper portion, and has a cup-shaped planting tool 28 with a sharp tip that can be opened and closed left and right, and the planting tool 28. It is comprised from the raising / lowering link mechanism 29 provided in the planting apparatus drive case 27 which raises / lowers.

  The planting tool 28 according to the present embodiment has an upper end side dimension body portion 28a and a lower end side sharp portion 28b (see FIG. 7), and a seedling is formed inside with the sharp pointed portion 28b having a sharp tip closed. After holding the strain and rising from the lowest end (bottom dead center) of the planting locus 17 and the tip of the pointed portion 28b completely coming out of the soil, it opens to the left and right and seeds in the planting hole formed in the cage It is a configuration in which the stock is dropped and seedlings are planted. A seedling guide 108 is attached to the upper part of the planting tool 28 so that the seedlings falling from the supply turntable 32 surely enter the planting tool 28.

  In the lifting link mechanism 29 of the present embodiment, the upper end is pivotally supported by the swing cam drive shaft 88 on the left side of the planting device drive case 27, and the lower end is pivotable by the lower front shaft 91. An upper end is fixed to the front swing arm 80 connected to the connection support plate 94 and the upper rear shaft 90 which is rotatable with respect to the planting device drive case 27, and the lower end is rotatable about the lower rear shaft 93. A front swing arm 80 and a left rear swing arm 81 provided in parallel with the front and rear are connected to the connection support plate 94. 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. 8A) 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 according to the rotation of the swing cam drive shaft 88, the opening / closing arm 101 is acted on the opening / closing arm 101 at a predetermined timing.

  With this configuration, the planting device 19 according to the present embodiment has a static locus 17 (the locus of the tip of the planting tool 28 drawn when the tobacco seedling transplanter 10 is stopped) during the planting operation. ).

  Next, operation | movement of the planting apparatus 19 of this Embodiment is demonstrated.

  Fig.8 (a)-FIG.8 (d) have shown the side view of the planting apparatus 19 in each position in planting operation | movement. FIG. 8A shows a side view at the top dead center, and FIG. 8C shows a side view at the bottom dead center. FIG. 8B shows a side view when the vehicle is descending from the top dead center toward the bottom dead center, and FIG. 8D is a diagram showing the middle ascending from the bottom dead center toward the top dead center. The side view of 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 a roller 87 (see FIG. 5). 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. Maintains a vertically oriented posture, and its lower end operates by drawing a planting locus 17, so that the seedlings received in the planting tool 28 can be planted on the ridge U in a proper posture.

  In the planting device 19 of the present embodiment, as shown in FIG. 7, in the planting tool 28, the position of the rotating lower shaft 96 to which the lower left arm 83 is connected is the rotating upper shaft to which the upper arm 82 is connected. It is arranged in front of 95.

  By disposing the rotating lower shaft 96 in front of the rotating upper shaft 95, it is possible to suppress the interval between the upper arm 82 and the lower left arm 83 from being narrowed when the planting tool 28 is lowered.

  With this configuration, when the planting tool 28 is in the vicinity of the bottom dead center, 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. .

  When the seedling is supplied to the planting tool 28, that is, when the swinging drive cam 84 is in contact with the rotating roller 87 when the seedling 28 is near the top dead center of the locus 17 where the planting tool 28 operates, In order to make the change of the diameter of the dynamic drive cam 84 small, and the swing drive at the position where the swing drive cam 84 is in contact with the rotating roller 87 when the planting tool 28 is near the bottom dead center. In order to greatly change the diameter of the cam 84, 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.

  By configuring the shape of the swing drive cam 84 and the direction fixed to the swing cam drive shaft 88 in this way, the moving speed of the tip of the planting tool 28 is supplied more than when the seedling is planted. Time can be extremely slow.

  At the top dead center and the bottom dead center, 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 arm. 99 and parallel to 99. Therefore, the crank when the seedling is supplied to the planting tool 28, that is, when the planting tool 28 is near the top dead center, and when the seedling is planted, that is, when the planting tool 28 is near the bottom dead center. 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 arm 85 is small. With this configuration, when the planting operation is performed, the tip of the planting tool 28 is operated so as to draw the loop-shaped locus 17, and the moving speed of the planting tool 28 near the top dead center (position where the seedling is supplied) is increased. The moving speed at the bottom dead center (the position where the seedling is planted) is slower than the moving speed. Therefore, the transplant object can be more reliably supplied to the planting tool 28.

  Further, when the tip of the planting tool 28 exists at the bottom dead center position, the crank arm 85 and the connecting arm 86 are linearly overlapped, so that the vertical movement by the crank arm 85 and the vertical movement by the inclination of the connecting arm 86 are performed. The movements match and the planting tool 28 can move faster. Further, when the tip of the planting tool 28 exists at the bottom dead center position, 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. The vertical swing 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 can be moved faster by the vertical movement by the crank arm 85 and the connecting arm 86. it can.

  Further, the trajectory 17 drawn by the tip of the planting tool 28 has a front-rear width at a lower part than the center of the vertical movement width of the planting tool 28 so that the front-rear width at the bottom dead center is maximized. The maximum configuration. 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 deep and small diameter planting hole for planting a transplant object can be reliably formed.

  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.

  Further, since the locus 17 which is a static locus drawn by the tip of the planting tool 28 has a circular shape in the vicinity of the bottom dead center, the movement locus in consideration of the traveling of the tobacco seedling transplanter 10 is near the bottom dead center. It becomes a locus that goes up and down in a straight line, and a deep and small planting hole for planting a transplant object such as a seedling can be reliably formed. Furthermore, it is desirable to adjust the locus 17 drawn by the tip of the planting tool 28 so that the locus 17 has a circular shape within the range of the planting depth. By making a circular static locus in a range where the planting tool 28 enters the soil, the planting hole can be made small.

  Further, the locus 17 drawn by the tip of the planting tool 28 has a shape in which the front-rear width becomes smaller above the planting depth, so that the amount of movement to the front side when the planting tool 28 ascends can be increased. The tip of the attachment 28 can be configured not to catch the planted seedlings.

  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 against the weight of the planting tool 28, so that the planting tool 28 can be operated stably. it can.

  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 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, the seedling can be supplied to the planting tool 28 more reliably.

  In the vicinity of the bottom dead center, the front swing arm 80, the left rear swing arm 81, and the right rear swing arm 99 correspond to the movement from the front to the rear, and the rotational connection of the tip of the crank arm 85 is performed. The 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, 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. The ascending speed of the planting tool 28 can be increased.

  Further, in the vicinity of the bottom dead center, 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, left The vertical movement of the rear swing arm 81 and the right rear swing arm 99 is reduced, and the planting tool 28 can be raised faster by the vertical movement by the crank arm 85 and the connecting arm 86.

  FIG. 9 is a view for explaining the arrangement position of each drive shaft in the planting device drive case 27, and shows a view as seen from the left side of the machine body.

  As shown in FIG. 9, in the planting device 19 of the present embodiment, the swing cam drive shaft 88 and the crank arm drive shaft 89 are disposed at substantially the same height. The upper rear shaft 90 penetrating the planting device drive case 27 from side to side is disposed at a position below a straight line connecting the center positions of the swing cam drive shaft 88 and the crank arm drive shaft 89. .

  The driving force transmitted from the planting transmission case 26 to the planting device drive case 27 is transmitted to the swing cam drive shaft 88. In the planting device drive case 27, the driving force of the swing cam drive shaft 88 is also transmitted to the crank arm drive shaft 89 via the transmission chain 107.

  The transmission chain 107 circulates around the upper rear shaft 90 in the planting device drive case 27, and the upper rear shaft 90 connects the center positions of the swing cam drive shaft 88 and the crank arm drive shaft 89. Since it is arranged at a position below the straight line, even if the transmission chain 107 is loosened, it does not hit the upper rear shaft 90, and the driving force can be stably transmitted to the crank arm driving shaft 89. Further, by arranging in this manner, the swing cam drive shaft 88, the crank arm drive shaft 89, and the upper rear shaft 90 can be arranged in a compact manner.

  Next, an opening / closing mechanism for opening and closing the planting tool 28 in the left-right direction and its operation will be described.

  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.

  FIG. 10A is a diagram for explaining a trajectory of the tip of the planting tool 28 moving when the planting tool 28 is viewed from the rear of the machine body. In Fig.10 (a), the locus | trajectory of the front-end | tip part of the left side member 109L of the planting tool 28 is shown with the broken line, and the locus | trajectory of the front-end | tip part of the right side member 109R is shown with the dashed-two dotted line. FIG. 10B is a schematic diagram showing an operation state of the planting tool 28 when the tip of the right member 109R shown in FIG. 10A is at positions Y10 to Y14. Here, the code | symbol 2 has shown the tobacco seedling typically, and the code | symbol 3 has shown the cross section of the bud typically.

  In addition, the cylindrical part with the pointed tip which temporarily holds the seedling of the planting tool 28 and forms a planting hole in the soil is composed of a pair of left and right symmetrical members 109L and 109R. In FIGS. 11A to 11C, the left member 109L is shown. 11 (a) is a plan view, FIG. 11 (b) is a left side view, and FIG. 11 (c) is a rear view when the left member 109L is viewed from the rear of the fuselage.

  As shown in FIG. 10A, the holder 291 provided in the planting tool 28 is composed of a left holder 291L and a right holder 291R, and the left holder 291L is integrally fixed to the left member 109L, and the right holder 291R is fixed to the right member 109R. It is fixed to the unit. The left holder 291L rotates around the left fulcrum shaft 225 in the front-rear direction, and the right holder 291R rotates around the right fulcrum shaft 226 in the front-rear direction. The shaft 227 connects the left holder 291L and the right holder 291R. In addition, an open / close rod 231 extending in the vertical direction is connected to a rotation operation arm 228 provided integrally with the left holder 291L, and a pin 105 of the counter arm 104 is connected to the open / close rod 231. An opening / closing spring 230 is provided between the left holder 291L and the right holder 291R, and the left member 109L and the right member 109R are pressed inward in the left-right direction by the spring force of the opening / closing spring 230, and planting is performed. The lower part of the tool 28 is closed. In addition, the opening / closing roller 102 and thus the opening / closing arm 101 are pressed against the opening / closing drive cam 100 side (upper side) by the spring force of the opening / closing spring 230.

  When the opening / closing drive cam 100 rotates with the rotation of the swing cam drive shaft 88 (see FIG. 5), the opening / closing roller 102 moves according to the peripheral shape of the opening / closing drive cam 100, and the opening / closing arm 101 swings. As the opening / closing arm 101 swings, the connecting rod 103 operates in the front-rear direction, the counter arm 104 rotates, the opening / closing rod 231 operates in the up-down direction, and the left holder 291L is moved via the rotation operation arm 228. At the same time, the right holder 291R is rotated via the interlocking shaft 227, and the left holder 291L and the right holder 291R are turned to the left and right symmetrical positions to open and close the lower portion of the planting tool 28. Specifically, the open / close rod 231 is actuated upward in accordance with the actuation of the connecting rod 103 to the front side, and the lower part of the planting tool 28 is opened. In addition, when the planting tool 28 is lifted, the lower portion of the planting tool 28 is temporarily largely opened by a local protrusion on the outer periphery of the opening / closing drive cam 100.

  The open / close arm 101 of the present embodiment is an example of the input arm of the present invention, and the counter arm 104 of the present embodiment is an example of the output arm of the present invention. Further, the opening / closing drive cam 100, the opening / closing arm 101, the connecting rod 103, the counter arm 104, the pin 105, the rotating operation arm 228, the opening / closing rod 231 and the like of the present embodiment constitute the opening / closing mechanism of the present invention. This is an example. In addition, the lifting / lowering link mechanism 29, the upper arm 82, the lower arm 83, the lower right arm 97, and the opening / closing mechanism (the opening / closing drive cam 100, the opening / closing arm 101, the connecting rod 103, the counter arm 104, the pin 105, the rotation) of the present embodiment. The components including the operation arm 228, the opening / closing rod 231 and the like correspond to an example of the vertical movement mechanism of the present invention.

  In the positions shown in FIGS. 8A to 8C, since the opening / closing driving cam 100 is not in contact with the opening / closing roller 102, it is lowered from the top dead center and the top dead center to the bottom dead center (see FIG. 8). 10 (b), Y10 to Y11), and then the bottom of the planting tool 28 is closed until it rises and the tip of the planting tool 28 is completely removed from the soil (see Y12 in FIG. 10 (b)). The state is maintained.

  Thereafter, as shown in FIG. 8 (d), after the tip of the planting tool 28 is completely removed from the soil by ascending from the position of the bottom dead center, the opening / closing drive cam 100 starts to contact the opening / closing roller 102. Accordingly, the lower part of the planting tool 28 starts to open, and the tobacco seedling 2 falls by its own weight (see Y13 in FIG. 10B). That is, as shown in FIG. 10A, the opening / closing drive cam 100 continues to contact the opening / closing roller 102 from a position β where the tip of the planting tool 28 is completely removed from the soil, rising from the bottom dead center α. It will be in a state and it will raise with the lower part of the planting tool 28 opened (refer Y14 of FIG.10 (b)).

  Therefore, the planting tool 28 is lowered to reach the bottom dead center α, and thereafter, the state where the lower part of the planting tool 28 is closed is maintained until the position β where the planting tool 28 is lifted and the tip is completely removed from the soil. . That is, the lower part of the locus 17 is lowered from the vicinity of the top dead center to the bottom dead center α, and then the lower part of the planting tool 28 is closed to the position β where the tip is lifted and the tip is completely removed from the soil. The lower part of the planting tool 28 is opened at a position β where the tip of the tool 28 has completely come out of the soil, and ascends with the lower part of the planting tool 28 open to the vicinity of the top dead center. It is closed before the seedling is supplied, and the next seedling is supplied into the planting tool 28.

  Thereby, the planting hole can be formed small, and the inner wall surface of the planting hole is brought into contact by opening the tip of the left member 109L and the tip of the right member 109R of the planting tool 28 in, for example, fragile soil. It is possible to prevent a part of the inner wall surface from collapsing.

  In addition, as described above, the counter arm 104 pivotally supported on the rotating upper shaft 95 to which the upper arm 82 is coupled is not depending on the raising / lowering positions of the upper arm 82 and the lower left arm 83, and can be opened and closed via the coupling rod 103. The opening / closing arm 101 is controlled 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 controlled with high accuracy by the opening / closing driving cam 100 having a simple shape.

  Further, in the present embodiment, even when the planting depth lever 49 is manually adjusted and the bottom dead center of the planting tool 28 is set to be the lowest (that is, the planting depth is deepest). It is assumed that the shape of the opening / closing drive cam 100 is adjusted in advance so that the lower portion of the planting tool 28 opens to the left and right at the position where the tip of the planting tool 28 protrudes upward from the soil by a predetermined dimension.

  The shape of the opening / closing drive cam 100 is not limited to this. For example, an opening / closing drive cam having a different shape is prepared in advance, and the opening / closing drive cam 100 is replaced in accordance with the adjustment of the planting depth lever 49. The structure may be sufficient, or the structure which adjusts the timing which the planting tool 28 opens by replacing | exchanging the opening-and-closing drive cam 100 according to the kind of seedling to plant may be sufficient. Thereby, it can prevent more reliably that a planting hole collapses by the lower part of the planting tool 28 opening.

  The opening / closing drive cam 100 may be fixed to a crank arm drive shaft 89 that drives the crank arm 85 and rotated integrally with the crank arm 85.

  In the present embodiment, since the opening / closing arm 101 is attached to the upper shaft 92 that is the connecting fulcrum shaft of the upper arm 82, the configuration is simple. Since the connecting rod 103 is parallel to the upper arm 82 and the lower left arm 83 regardless of the lift position of the lift link mechanism 29, the opening amount of the planting tool 28 can be set with high accuracy by the opening / closing drive cam 100. In addition, since both the open / close arm 101 and the counter arm 104 are connected to the rotation fulcrum shaft of the upper arm 82, the connecting rod 103 is disposed along the upper arm 82 and has a compact configuration. Further, since the opening / closing drive cam 100 is attached to the swing cam drive shaft 88 which is the pivot point of the front swing arm 80 together with the swing drive cam 84, the structure is simple.

  In addition, an adjustment screw such as a turnbuckle is provided at the connecting portion of the connecting rod 103 to the counter arm 104, and the length of the connecting rod 103 between the open / close arm 101 and the counter arm 104 can be adjusted by the adjusting screw. Also good. By providing an adjustment screw at this position, the opening amount of the planting tool 28 can be adjusted from the rear of the planting tool 28.

As shown in FIG. 7, the planting device 19 of the present embodiment, the turning radius L ₁ of the opening and closing for the output arm of the planting device 28 side (counter arm 104), for opening and closing of the planting device drive case 27 side It is made smaller than turning radius _{L 2} of the input arm (open arm 101).

By making the turning radius L ₁ of the counter arm 104 smaller than the turning radius L ₂ of the opening / closing arm 101, the counter arm 104 is rotated at a turning angle larger than the turning angle around the upper shaft 92 of the opening / closing arm 101. It rotates about the rotation upper shaft 95.

  Therefore, the planting tool 28 can be opened and closed with a smaller rotation angle of the open / close arm 101 than in the prior art.

  Further, since the amount of rotational displacement of the opening / closing arm 101 for opening and closing the planting tool 28 can be reduced, the surrounding shape of the opening / closing drive cam 100 for moving the opening / closing roller 102 can be reduced to a shape with a small amount of change in radius. The cam 100 can be reduced in size.

  Further, since the counter arm 104 can be shortened, the seedling guide 108 can be lowered and the position of the supply turntable 32 can be lowered. Moreover, the stroke of the raising / lowering link mechanism 29 can be lengthened, and the width | variety of the vertical motion of the planting tool 28 can be enlarged.

  The planting device 19 can freely adjust the opening / closing timing and the opening / closing speed of the planting tool 28 by changing the peripheral shape of the opening / closing drive cam 100.

  When the left member 109L and the right member 109R are opened, an upward speed component is generated along with a speed component in the left-right direction at the tip portions thereof. On the other hand, a downward speed component is generated in the entire planting tool 28 by the lifting link mechanism 29 until reaching the bottom dead center.

  Next, the structure and operation | movement of the modification of the planting tool 28 are demonstrated using FIG. 12, FIG.

  FIG. 12 is a left side view schematically showing a configuration in which the planting tool 28 is provided with a watering nozzle. Moreover, Fig.13 (a) is a left view which shows typically the structure provided with the ridge surface suppression board in the planting tool 28, FIG.13 (b) is a figure explaining operation | movement of a ridge surface suppression board. It is.

  As shown in FIG. 12, one of the upper parts of the planting tool 28 is connected to the irrigation pump (not shown) side, and the other is branched into a plurality of parts arranged around the entire upper part of the planting tool 28. A watering tube 50 to which a watering nozzle 51 is attached is attached to the tip.

  And when forming a planting hole in the dry ridge surface, when the lower end of the planting part 28 is stuck in the soil, the watering nozzle 51 waters the outer peripheral surfaces of the left member 109L and the right member 109R. It is a configuration.

  Thereby, the dry ridge surface gets wet with water, and soil becomes easy to harden.

  Moreover, in the structure shown to Fig.13 (a), the ring-shaped ridge surface suppression board 55 is arrange | positioned in the front-back direction in the position surrounding the perimeter of the upper part vicinity of the sharp part 28b of the planting tool 28 by planar view. It is attached via a spring 56 so as to be movable up and down. Further, a stopper wire 57 that regulates the maximum width of the movable range of the heel surface pressure plate 55 connects the ridge surface pressure plate 55 and the planting portion upper end frame 28 c outside the attachment position of the compression spring 56.

  In the above configuration, as shown in FIG. 13B, the planting tool 28 descending from the top dead center (see STEP 10) has the tip of the sharp part 28b on the heel surface 3 while the lower part of the planting tool 28 is closed. When pierced (see STEP 11) and further lowered to the position before the bottom dead center, when the lower surface of the heel surface pressure plate 55 hits the heel surface 3, the compression spring 56 continues to descend to the bottom dead center while being compressed (see FIG. 11). (Refer to STEP12) After starting the ascending with the lower part of the planting tool 28 closed (see STEP13), after completely coming out of the soil of the surface 3, the lower part of the planting tool 28 is opened and the seedling 2 is planted. Drop into the hole (see STEP 14).

  In STEP 12, the lower surface of the heel surface pressure plate 55 presses and solidifies the periphery 58 of the planting hole formed in the heel surface 3 by the repulsive force of the compression spring 56, so that the planting hole is less likely to collapse.

  Next, a mechanical multi-sheet cutter will be described with reference to FIG.

  FIG. 14 is a schematic perspective view of the multi-sheet cutter 400.

  As shown in FIG. 14, the multi-sheet cutter 400 is a device for making a hole in the multi-sheet that covers the collar surface 3, and is arranged in front of the planting tool 28 so as to be movable up and down. Moreover, the front-end | tip part 401 of the multi-sheet cutter 400 has a blade shape, and is configured to cut the multi-sheet. Further, the cut multi-sheet has a ship bottom shape having a smooth R shape in a side view so that the front end portion 401 is buried on the front side. In addition, the multi-sheet cutter 400 spreads in a Y shape from the front end portion to the rear end portion in plan view, and the wide width W of the rear end portion is a sharp portion that enters the soil of the planting tool 28. It is set to the same width as the diameter of 28b. In addition, the lower end portion 402 of the multi-sheet cutter 400 is curved outward, and is configured to be rolled up and buried in the soil while spreading the multi-sheet cut with the blade of the tip end portion 401.

  Next, the thermoelectric multi-sheet cutter 410 will be described with reference to FIGS. 15 (a) to 15 (c).

  Note that the thermoelectric multi-sheet cutter 410 of the present embodiment is an example of the punching device of the present invention.

  FIG. 15A is a schematic rear view of the planting tool 28 provided with the thermoelectric multi-sheet cutter 410, and FIG. 15B is a schematic left side of the planting tool 28 provided with the thermoelectric multi-sheet cutter 410. FIG. 15C is a schematic plan view of the planting tool 28 provided with the thermoelectric multi-sheet cutter 410.

  As shown in the figure, the thermoelectric multi-sheet cutter 410 is a substantially elliptical belt-like member in a plan view, and is arranged with a predetermined gap around the outer periphery of the size barrel portion 28a of the planting tool 28. The seedlings held inside the planting tool 28 are not burned by the heat from the body type multi-sheet cutter 410. In addition, the gap 411 between the thermoelectric multi-sheet cutter 410 and the size body portion 28a is set to a width that does not contact the size body portion 28a when the left side member 109L and the right side member 109R are opened to the maximum. Further, the height of the cut surface 410a of the thermoelectric multi-sheet cutter 410 is set to a height at which the lower surface of the planting tool 28 comes into contact with the top soil of the saddle surface 3 when it enters the soil most deeply. Thereby, the cut multi-sheet is buried in the soil.

  Next, another example of the multi-sheet cutter will be described with reference to FIGS. 16 (a) to 16 (c).

  16A is a perspective view of the multi-sheet cutter main body 450, FIG. 16B is a schematic cross-sectional view of the multi-sheet cutter main body 450, and FIG. 16C is a multi-sheet cutter main body 450. It is the top view which showed typically the electric heating part 453 arrange | positioned inside.

  As shown in FIG. 16A, the multi-sheet cutter main body 450 is configured to obtain a driving force for vertical movement from a crank arm drive shaft 89 that is one of the drive shafts of the planting tool 28.

  In other words, the working arm 451 having one end fixed to the center of the upper surface of the multi-sheet cutter main body 450 has the other end that is bent at a right angle from the rising part that rises vertically, and is substantially L-shaped in rear view. The other end of the arm is supported in the middle of the lower right arm 97 so as to be rotatable via an arm rotation connecting shaft 452. The interval M between the multi-sheet cutter main body 450 and the planting tool 28 is set between one stock.

  As described above, the multi-sheet cutter main body 450 has a drive shaft that is shared with the crank arm drive shaft 89 of the planting tool 28, and is configured to move up and down in synchronization with the vertical movement of the planting tool 28. . Moreover, since the interval M between the multi-sheet cutter main body 450 and the planting tool 28 is set between one stock, the multi-sheet cutting operation is performed in advance for one stock.

  In addition, although the space | interval M of the multi-sheet cutter main body 450 and the planting tool 28 demonstrated the structure set between 1 stock | strain, you may set not only to this but an interval shorter than 1 stock | strain, for example. At that time, the phase of the vertical movement of the planting tool 28 and the phase of the vertical movement of the multi-sheet cut main body 450 are set to be shifted. At this time, a multi-sheet cutter crank arm that includes a multi-sheet cutter crank arm driven by a crank arm drive shaft 89, a multi-sheet cutter connecting arm, and a multi-sheet cutter lifting arm is provided. Is different from the phase of the crank arm 85 (the mounting angle to the crank arm drive shaft 89 is different between the crank arm for the multi-sheet cutter and the crank arm), and the multi-sheet cutter main body 450 and the action arm 451 are moved up and down. What is necessary is just composition. It is desirable that the multi-sheet cutter crank arm and the crank arm 85 be arranged separately on the left and right of the planting device drive case 27.

  Further, as shown in FIG. 16B, the multi-sheet cutter main body 450 has a circular outer shape in plan view, and a multi-cut portion 452 whose outer edge protrudes downward, and an inner surface of the multi-cut portion 452. And a cutting portion 454 that cuts the multi-sheet at the tip of the protruding portion of the outer edge portion.

  Moreover, as shown in FIG.16 (c), the electric heating part 453 has the electric heater 453a arrange | positioned concentrically.

  As a result, the electric heating part 453 disposed on the inner surface side of the multi-cut part 452 is surrounded by the cutter part 454, and the crosswind is difficult to directly hit the electric heating part 453. The part 453 is not easily cooled, and the working efficiency is improved.

  In addition, it is good also as a structure which made the multicut surface of the electrothermal part 453 spiral, and made the area which hits a multisheet small. Thereby, compared with the case where the multi-cut surface of the electric heating part 453 is planar, the electric heating part 453 in which the multi-cut surface is vortexed is less likely to be cooled because the contact area to the multi-sheet is reduced.

  Next, the detailed configuration and operation of the vertical movement mechanism of the presser 110 of the tobacco seedling transplanter 10 shown in FIG. 1 will be described with reference to FIG.

  In addition, in the structure provided with the pressing tool 110, it is preferable to use the thermoelectric multi-sheet cutter 410 shown in FIGS. 15 (a) to 15 (c) as the multi-sheet punching device. However, when the electric heating unit 453 shown in FIGS. 16A to 16C is used, for example, a configuration in which the pressing tool 110 does not interfere with the electric heating unit 453 and the action arm 451 is used. What is necessary is just to set it as the structure which a mutual structural member with the part 453 does not interfere.

  The tobacco seedling transplanter 10 according to the present embodiment includes a presser 110 that holds down a multi-sheet laid on a farm field so as not to float up.

  FIG. 17 shows a side view of the presser vertical movement mechanism portion of the present embodiment. FIG. 18A shows a plan view of the presser 110, and FIG. 18B shows a plan view for explaining the positional relationship between the presser 110 and the left and right grounding position detectors 36 and 37. As shown in FIG. FIG. 17, FIG. 18 (a) and FIG. 18 (b) show only the portion related to the presser vertical movement mechanism, and the other portions are not shown. In FIG. 17, the portion of the planting depth rod 53 is indicated by a broken line in order to easily explain the positional relationship viewed from the side of the aircraft.

  The pressing tool 110 according to the present embodiment moves up and down in synchronization with the vertical movement of the planting tool 28. The presser 110 descends when the seedling is planted in the field by the planting tool 28, and presses the multi-sheet to the heel side when the seedling is planted.

  The pressing tool 110 includes two bar-shaped pressing members 119 and a pressing tool support arm 111 that fixes the front ends of the pressing members 119 in common. The presser support arm 111 is connected to the lower end of the presser lift rod 112 by a lift rod connecting portion 118.

  The presser support arm 111 corresponds to an example of the vertical rotation arm of the present invention.

  The presser support arm 111 having two presser members 119 fixed to the rear end is disposed between the left ground contact position detection body 36 and the right ground contact position detection body 37 in plan view, and the presser member 119 moves up and down. Therefore, the front end is rotatably attached to the body frame. The two pressing members 119 fixedly supported at the rear end of the bar-shaped pressing tool support arm 111 are disposed behind the left ground position detection body 36 and the right ground position detection body 37.

  Further, as shown in FIG. 18B, the two pressing members 119 are arranged on the left and right of the planting tool 28 in plan view, and the rear ends thereof face the planting tool 28 side, that is, the inside. ing.

  Further, as shown in FIG. 17, the two pressing members 119 have R-shaped rear ends facing upward.

  With this configuration, when the pressing member 119 presses the multi-sheet laid on the farm field, the tip of the pressing member 119 can be prevented from being stuck into the multi-sheet, and the multi-sheet can be hardly broken.

  Further, the multi-sheet can be made harder to break by coating the pressing member 119 with resin.

  The presser support arm 111 is a lift rod connecting portion 118 provided at an intermediate portion of the presser support arm 111, and a base portion of the presser lift rod 112 provided upward is rotatably connected.

  In the presser lift rod 112, a presser lift pin 120 is erected above the presser lift rod 112, and the presser lift pin 120 is engaged with the upper surface portion of the distal end portion of the presser lift arm 113. The other end of the presser lift arm 113 is pivotally attached to a presser lift arm support shaft 114 protruding from the side surface of the planting device drive case 27.

  In addition, a presser drive cam 115 is provided which rotates fixedly to a crank arm drive shaft 89 protruding leftward from the planting device drive case 27. A presser rotation roller 116 that is rotatably provided at an intermediate portion of the presser lift arm 113 is arranged so as to contact the peripheral edge of the presser drive cam 115 and is pressed by a presser lift pin 120. The presser lift rod 112 engaged with the tool lift arm 113 is lifted upward corresponding to the position where the presser rotation roller 116 contacts the presser drive cam 115.

  The presser driving cam 115 is disposed between the lower left arm 83 and the lower right arm 97 as shown in FIG. By disposing the presser drive cam 115 between the lower left arm 83 and the lower right arm 97, the configuration of the presser vertical movement mechanism can be reduced.

  A stopper 117 provided with a round hole through which the presser lift rod 112 is passed is fixed to the planting device drive case 27.

  Further, on the upper portion of the presser lift rod 112, a downward movement stopper pin 121 that defines the lowest position of the presser member 119 is attached. When the downward movement stopper pin 121 comes into contact with the upper surface of the stopper 117, the pressing member lift rod 112 is regulated so as not to descend from that position, and the position of the pressing member 119 at that time is the pressing member 119 that moves up and down. The lowest position. Thereby, it can prevent that the pressing member 119 falls too much and tears the multi-sheet laid in the farm field.

  By changing the position of the presser lift rod 112 to which the downward movement stopper pin 121 is attached, the lower limit position of the vertical movement of the presser member 119 can be adjusted.

  In addition, by providing the lower movement stopper pin 121 that can change the mounting position on the upper surface of the stopper 117, it is possible to adjust the lower limit position of the pressing member 119 without forcing an unreasonable working posture. It can be easily operated at the height position on the upper end side of.

  The configuration in which the presser lift rod 112 and the downward movement stopper pin 121 are combined is an example of the lower limit position adjusting member of the present invention.

  Further, the planting depth rod 53 changes the vertical position of the connecting stay round shaft portion 61 which is the rotation center axis of the left ground contact position detector 36 and the right ground contact position detector 37. FIG. 17 and FIG. As shown in b), the presser support arm 111 is arranged on the lower side of the frame support shaft 73 which is the pivot point of the planting depth rod 53.

  When the pressing member 119 hits a hard earth lump or the like on the fence, the pressing member 119 is pushed upward. At this time, the presser support arm 111 is pushed up, but when the presser support arm 111 contacts the frame support shaft 73, the upward movement of the presser 110 is restricted at that position. Therefore, the position where the presser support arm 111 contacts the frame support shaft 73 is the upper limit position where the presser member 119 can move, and the upward movement of the presser member 119 is restricted. That is, the frame support shaft 73 also serves as a stopper that restricts the upward movement of the pressing member 119.

  By restricting the upward movement of the pressing member 119, the pressing tool 110 can be prevented from moving extremely upward, and the multi-sheet laid on the farm can be pressed stably.

  Next, the operation of the presser vertical movement mechanism configured as described above will be described.

  The presser drive cam 115 rotates with the rotation of the crank arm drive shaft 89, and the presser lift arm 113 is centered on the presser lift arm support shaft 114 in response to a change in the shape of the peripheral edge of the presser drive cam 115. Rotate as

  As the presser lift arm 113 rotates, the presser lift rod 112 engaged with the tip of the presser lift arm 113 moves up and down. In response to the vertical movement of the presser lift rod 112, the presser member 119 moves up and down via the presser support arm 111.

  Since the presser driving cam 115 rotates together with the crank arm drive shaft 89 that drives the crank arm 85 that controls the vertical movement of the elevating link mechanism 29 that raises and lowers the planting tool 28, the presser tool 110 is connected to the planting tool 28. It moves up and down in synchronization with the up and down movement.

  The timing of the vertical movement of the presser 110 with respect to the lifting and lowering operation of the planting tool 28 can be freely set by the peripheral shape of the presser drive cam 115.

  When the planting tool 28 is in the raised position, that is, when the seedling is supplied from the supply cup 33 to the planting tool 28, the presser 110 is also lifted upward, and the planting tool 28 is lowered and planted. When it is in the position, the presser 110 is moved to a position where the presser 110 is lowered to a position where the multi-sheet placed on the farm scene is pressed.

  As described above, since the pressing tool vertical movement mechanism is operated by the crank arm drive shaft 89 that is the driving shaft for moving the planting tool 28 up and down, the planting tool 28 and the pressing tool 110 are driven by the same drive shaft. An error in drive timing is less likely to occur in both, and the multi-sheet can be pressed to the heel side at an appropriate timing for planting the seedling.

  It should be noted that the mounting angle of the two pressing members 119 shown in FIGS. 18 (a) and 18 (b) to the pressing tool support arm 113 can be adjusted, and the two pressing members 119 correspond to the opening amount of the planting tool 28. It is good also as a structure which can change the angle which the pressing member 119 makes.

  Next, with reference to FIG. 19 (a), FIG. 19 (b), and FIG. 20 (a) to FIG. 20 (d), a shredder board, which is an embodiment of the invention related to the planting tool of the present invention. The configuration and operation of the attached planting tool 430 will be described.

  FIG. 19A is an operation explanatory view schematically showing an operation of a type in which the rollers 432 are not provided at the tips of the pair of left and right mulch plates 431, and FIG. 19B is a pair of left and right mulch plates 431. It is operation | movement explanatory drawing which represented typically the operation | movement of the type provided with the roller 432 at the front-end | tip of the. In both figures, the state where the planting tool 430 with the lining plate is viewed from the rear of the aircraft is shown.

  As shown in FIG. 19 (a), in the planting tool 430 with a mulch plate, a long plate-shaped mulch plate 431 can be rotated via a hinge 431a at the respective front ends of the left member 109L and the right member 109R. It is attached.

  Moreover, the planting tool 430 with a lining plate shown in FIG.19 (b) equips the front-end | tip of a pair of left and right mulching plates 431 with the roller 432 so that rotation is possible.

  Both operations are basically the same except for the presence or absence of the roller 432, and will be described simultaneously with reference to FIGS. 19 (a) and 19 (b).

  That is, when the planting tool 430 with the lining plate is descending from the top dead center (see STEP 20 and STEP 30), the lining plate 431 hangs down by its own weight, but continues to descend further, and the tip of the mulching plate 431 is the saddle surface 3 , The tip portions rotate in directions away from each other (see arrow A in FIG. 19A and FIG. 19B) (see STEP 31 in FIG. 19B), the left member 109L, and the right side Along the surface of the member 109R, it is pierced into the soil together with the tip of the planting tool (see STEP21 and STEP32).

  When the planting tool 430 with the shingling plate descends to the bottom dead center, the lower part of the planting tool opens in the horizontal direction in the soil, and the seedling 2 is dropped by its own weight (see STEP22 and STEP33).

  Thereafter, when the planting tool 430 with the lining plate rises, the pair of left and right mulching plates 431 that have come out of the soil begin to move in the direction of arrow B by their own weight (see STEP 23 and STEP 34). At that time, as the earthing plate 431 moves, the soil around the planting hole is simultaneously scraped toward the planting hole, so that the soil is brought to the root of the seedling 2.

  Thereby, the soil can be brought to the root of the seedling 2. In addition, since the gap between the seedling 2 that has fallen by its own weight and the planting hole can be closed almost uniformly and immediately from the left-right direction, the seedling posture is improved.

  In addition, as shown in FIG. 19B, by attaching a roller 432 to the tip of the mulch plate 431, when the planting tool 430 with the mulch plate descends (see STEP 20 and STEP 30), the tip of the mulch plate 431 is in the soil. It is possible to prevent the piercing and puncture plate 431 to be reliably moved in the direction of arrow A.

  Next, with reference to FIGS. 20A to 20D, a modified example of the earthing plate 431 will be described.

  FIG. 20A schematically shows a configuration in which an adjustment bolt 433 capable of adjusting the closing width of the mulching plate is pivotably attached to each of the pair of left and right digging plates 431 and the tips thereof are opposed to each other. FIG.

  As shown in the figure, by rotating the adjustment bolt 433, the projecting dimension of the tip end portion of the adjustment bolt 433 from the earthing plate 431 can be adjusted. As a result, if the projecting dimensions of the leading ends of both adjusting bolts 433 are increased, the closing width of the earthing plates 431 can be set wide, and conversely, if the projecting dimensions of the leading ends are shortened, the closing width of the earthing plates 431 is closed. Can be set narrowly.

  FIG. 20B schematically shows a configuration in which a weight stay 441 for detachably holding a donut-shaped weight 440 capable of adjusting its own weight is attached to each of the pair of left and right earthing plates 431. FIG.

  As shown in the figure, by adjusting the number of weights 440 attached to the weight stay 441, when the earthing plate 431 scrapes the earth (see STEP23 in FIG. 19A, STEP34 in FIG. 19B), The load applied to the soil by the mulching plate 431 can be adjusted.

  FIG. 20C is a diagram schematically showing a configuration in which three long-plate-shaped seedling guide plates 431b are vertically attached to the inside of the pair of left and right mulch plates 431. FIG. These are the schematic perspective views which looked at the earthing board 431 from the inner side.

  As shown in the figure, the seedling guide plate 431b is provided on the inner side of the earthing plate 431, so that when the earthing plate 431 is closed, the seedling 2 is erected along the vertically arranged seedling guide plate 431b. Therefore, the posture of the seedling 2 can be corrected.

  Next, the meshing transmission type continuously variable transmission mechanism will be described with reference to FIGS. 21 (a) to 21 (c) and FIG.

  The meshing transmission type continuously variable transmission mechanism described here is applicable to the traveling system of the seedling transplanter 10 described in the above embodiment.

  FIG. 21A is a schematic diagram illustrating the meshing transmission type continuously variable transmission mechanism 500, and FIG. 21B is a schematic plan view of the first sprocket 510 in FIG. 21A. FIG. 22C is a schematic plan view of the second sprocket 520 in FIG. FIG. 22 is a schematic plan view of the variable diameter drive shaft 530 of FIG.

  As shown in FIG. 22, the variable diameter drive shaft 530 is a drive shaft member having a substantially drum-like appearance, with flanges 532 a and 532 b having a predetermined thickness fixed to both ends of a cylindrical body portion 531. The flanges 532a and 532b have a circular shape when the thickness portion is cut by a plane orthogonal to the central axis of the body portion 531, and as the distance from the body portion 531 increases, It is the structure which has the inclined surface where a diameter becomes large smoothly. In addition, teeth 533a and 533b that can slide in synchronization with each other along the axial direction of the body portion 531 are arranged on the inclined surfaces of the flange portions 532a and 532b.

  Further, as shown in FIGS. 21A to 21C, the variable diameter drive shaft 530 and the first sprocket 510 are connected by the first chain 550 via the teeth 533a, and the variable diameter drive shaft is also provided. 530 and the second sprocket 520 are connected by a second chain 555 through teeth 533b.

  Further, the first sprocket 510 has a first gear 511 and a second gear 512 fixed to a shaft 513 and supported rotatably. Further, both ends of the shaft 513 are pulled by a spring 514 to automatically adjust the slack of the first chain 550 with the variable diameter drive shaft 530.

  The second sprocket 520 has a third gear 521 and a fourth gear 522 fixed to the shaft 523 and supported rotatably. Further, both ends of the shaft 523 are pulled by a spring 524 to automatically adjust the slack of the second chain 555 between the variable diameter drive shaft 530.

  The second gear 512 is connected by a third chain 560 to a fifth gear 541 attached to one end of both ends of the driven shaft 540 via a one-way clutch.

  The fourth gear 522 is connected to the other end of both ends of the driven shaft 540 by a fourth chain 565 and a sixth gear 542 attached via a one-way clutch.

  That is, when the third chain 560 moves in the arrow direction of FIG. 21A, the fifth gear 541 rotates in the arrow D direction, and the driven shaft main body 540a rotates in the arrow D direction. Since the gear 542 rotates idly by the action of the one-way clutch, the fourth chain 565 does not move.

  On the other hand, when the fourth chain 565 moves in the arrow direction of FIG. 21A, the sixth gear 542 rotates in the arrow E direction, and the driven shaft main body 540a rotates in the arrow E direction. Since the gear 541 rotates idly by the action of the one-way clutch, the third chain 560 does not move.

  Further, when the variable diameter drive shaft 530 rotates in the direction of arrow F and the tooth 533a moves to a position where it is disengaged from the first chain 550, the first spring steel 551 urged by the first chain 550 is always used, The first chain 550 is configured to be returned to a predetermined position. Here, the predetermined position is a position where the teeth 533a can be smoothly engaged when the teeth 533a are again engaged with the first chain 550.

  Further, when the variable diameter drive shaft 530 rotates in the direction of arrow F and the tooth 533b moves to a position where it is disengaged from the second chain 555, the second spring steel 556 always biased by the second chain 555 The second chain 555 is configured to be returned to a predetermined position. Here, the predetermined position is a position where the teeth 533b can mesh smoothly when the teeth 533b mesh with the second chain 555 again.

  With the above configuration, when the teeth 533a and 533b of the variable diameter drive shaft 530 are located in the right half region of the variable diameter drive shaft 530 shown in FIG. 21 (a), the teeth 533a are connected to the first chain 550. Since they are engaged, the first sprocket 510 is rotated, the third chain 560 is rotated, and the driven shaft main body 540 a is rotated in the arrow D direction via the fifth gear 541.

  Thereafter, when the teeth 533a and 533b of the variable diameter drive shaft 530 are moved to the left half region of the variable diameter drive shaft 530 shown in FIG. 21A, the teeth 533a and the first chain 550 are disengaged. The first sprocket 510 stops rotating, but at the same time, since the teeth 533b mesh with the second chain 555, the second sprocket 520 rotates, the fourth chain 565 is rotated, and the driven shaft main body 540a is The rotation starts in the direction of arrow E via the 6 gear 542.

  By repeating the above operation, either one of the first chain 550 and the second chain 555 is always rotated by rotating the variable diameter drive shaft 530, so that the driven shaft main body 540a is always rotated in a certain direction. Move.

  Further, as shown in FIG. 22, the teeth 533a and 533b slide in synchronization with each other along the axial direction of the body portion 531 on the inclined surfaces of the flange portions 532a and 532b. The meshing diameter of the first chain 550 and the teeth 533a is changed, and the meshing diameter of the second chain 555 and the teeth 533b in the flange portion 532b is linearly changed, so that the chain feed speed is linearly changed and continuously variable transmission is possible. .

  Further, since it is a meshing transmission type, slip does not occur and a large torque can be changed.

  In addition, in the said embodiment, although demonstrated by the example shown by Fig.11 (a)-FIG.11 (c) as a structural example of the front-end | tip part of the planting tool 28, it is not restricted to this, For example, FIG. ), As shown in FIG. 23 (b), the length of the size barrel portion 28a is substantially the same as the length of the sharp portion 28b. As shown in FIGS. 24 (a) and 24 (b), the size barrel portion 28a is the length of the sharp portion 28b. 25a, or as shown in FIGS. 25 (a) and 25 (b), the size body 28a is longer than the length of the sharp portion 28b, and the inside diameter of the size body 28a is shown in FIGS. It may be a type that is larger than the inner diameter of the size barrel of the planting tool shown in b). For example, according to the configuration of the planting tool shown in FIGS. 24 (a) and 24 (b), since the size barrel is thin and long, a deep and long cylindrical planting hole can be formed, and FIG. 25 (a). According to the configuration of the planting tool shown in (b), the cylindrical body is deep and large in diameter because the cylindrical body is thick and long.

  Moreover, in the said embodiment, the seedling transplant provided with the seedling supply apparatus 31 which has arrange | positioned the several supply cup 33 which accommodates the transplant object of this invention to the ring shape along the circumference | surroundings path | route for the transplanting tool of this invention. Although the configuration applied to the machine has been described, the present invention is not limited thereto, for example, on a traveling vehicle body, a seedling supply device for placing a seedling tray provided with a large number of pots in length and breadth, a seedling planting device for planting seedlings in a cocoon, The structure applied to the transplanting machine provided with the seedling extraction apparatus which takes out the seedling one by one from the seedling tray of the seedling supply apparatus and supplies it to the seedling transplanting apparatus may be used.

  In the above-described embodiment, the configuration in which the meshing transmission type continuously variable transmission mechanism 500 is used in a tobacco seedling transplanting machine that is an example of the transplanting machine of the present invention has been described. It may be used.

  In the above-described embodiment, the tobacco seedling is used as an example of the transplant object of the present invention. However, the present invention is not limited to this. For example, seedlings such as onions and lettuce, seed seeds, etc. Kind is also acceptable.

  The transplanting machine according to the present invention is capable of forming an appropriate planting hole because the planting hole is not easily collapsed, so that the transplanter is provided with a planting apparatus for planting transplanted objects such as seedlings such as cigarettes, onions and lettuce and seed pods. It can be applied to machines and has high industrial applicability.

DESCRIPTION OF SYMBOLS 1 Traveling body 10 Cigarette seedling transplanter 11 Engine 12 Main transmission case 13 Front wheel 14 Rear wheel 15 Pressure wheel 16 Steering handle 17 Trajectory 18 Rolling shaft 19 Planting device 20 Traveling chain case 21 Rear frame 22 Main frame 23 Hydraulic lifting cylinder 24 Hydraulic pressure Switching valve section 25 Hydraulic cylinder for tilting left and right 26 Planting transmission case 26a Fixed engagement hook 27 Planting device drive case 28 Planting tool 29 Lifting link mechanism 31 Seedling supply device 32 Supply turntable 33 Supply cup 34 Opening / closing lid 35 Supply cup opening / closing guide 36 Left ground contact position detector 37 Right ground contact position detector 38 Turntable drive case 39 Strut 40 Travel extension case 40a Upper arm 42 Left / right tilt sensor 43 Recumbency 44 Left rear wheel lift rod 45 Right rear wheel lift rod 46 Left / right tilt Switching valve 47 Rolling adjustment lever 48 Tilt adjustment cable 49 Planting depth lever 50 Balance 51 Balance connecting stay 52 Grounding body rotation shaft 53 Planting depth rod 54 Left grounding body support bar 55 Hydraulic rod 56 Turning stay 57 Connection Rod 58 Rotating stay shaft 59 Right grounding body support bar 60 Connecting stay plate portion 61 Connecting stay round shaft portion 62 Hydraulic rod connecting portion 63 Balance rod portion 64 Balance boss portion 65 Left ground plate 66 Left balance connecting plate 67 Left rotation shaft support Plate 68 Left tension spring 69 Right tension spring 70 Right ground plate 71 Right balance connecting plate 72 Right pivot shaft support plate 73 Frame support shaft 74 Load defining hole 75 Connecting stay connecting shaft 76 Rotary stay connecting hole 77 Rotational force transmitting member 78 Rotation drive mechanism 79 Auxiliary plate 80 Front swing arm 81 Left rear swing Over arm 82 the upper arm 83 the lower left arm 84 swing drive cam 85 crank arm 86 connecting arm 87 rotates roller 88 oscillating cam drive shaft (Fourth axis)
88a key 89 crank arm drive shaft 90 upper rear shaft 91 lower front shaft 92 upper shaft 93 lower rear shaft 94 connecting support plate 95 rotating upper shaft 96 rotating lower shaft 97 right lower arm 98 left and right connecting rod 99 right rear swing arm DESCRIPTION OF SYMBOLS 100 Opening and closing drive cam 101 Opening and closing arm 102 Opening and closing roller 103 Connecting rod 104 Counter arm 105 Pin 106 Turning connecting shaft 107 Transmission chain (third endless body)
108 Seedling guide 109L Left side member 109R Right side member 110 Presser 111 Presser support arm 112 Presser lift rod 113 Presser lift arm 114 Presser lift arm support shaft 115 Presser drive cam 116 Presser rotating roller 117 Stopper 118 Lift rod Connecting part 119 Pressing member 120 Presser lift pin 121 Downward movement stopper pin

Claims (5)

Traveling vehicle body (1),
A planting tool (28) that is provided on the traveling vehicle body (1) so as to be movable up and down, and for planting a transplant object;
A vertical movement mechanism (29, 82, 83, 97) for moving the planting tool (28) up and down;
The planting tool (28) receives a transplant object, moves downward, forms a planting hole in the soil, and then opens a lower end side while moving upward from the bottom dead center. A transplanter, wherein an object is dropped into the planting hole.   The transplanter according to claim 1, wherein the planting tool (28) opens the lower end side after completely slipping out of the soil.   The transplanter according to claim 1 or 2, characterized in that the planting tool (28) has an upper end side dimension body part (28a) and a lower end side sharp part (28b). On the outer peripheral side of the planting tool (28), provided with a punching tool (410) for making a hole in the surface of a strip-shaped sheet laid on the surface of the farm field,
The punching tool (410) moves up and down together with the planting tool (28), and when the lower end side of the planting tool is opened, the punching tool (410) is arranged so as not to contact the lower end side of the planting tool. 4. The transplanter according to claim 1, wherein the transplanter is disposed so as to be displaced upward from a lower end side of the planting tool. The vertical movement mechanism (29, 82, 83, 97) includes an input arm (101) disposed on the drive side, an output arm (104) connected to the planting tool (28), and the input arm (101). ) And a connecting rod (103) that connects the output arm (104), and the output arm (104) rotates as the input arm (101) rotates, thereby the planting tool ( The transplanter according to any one of claims 1 to 4, further comprising an opening and closing mechanism (100, 101, 103, 104) for opening and closing 28).

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