A shown in Figs. 1 to 3 is a passive seedling transplanting machine according to the present invention. As shown in Figs. 1 to 3, the seedling transplanting machine A is capable of lifting and lowering the grafting portion 3 via the lifting mechanism portion 2 on the rear side of the traveling portion 1 as a towing vehicle. The seedling transplanting machine A is capable of performing a plurality of transplanting operations (two sets in this embodiment).
[Travel section (1)]
As shown in Figs. 1 to 3, the traveling unit 1 is constructed by mounting an upper body 12 on a lower body 11. As shown in Fig. 4, the lower body 11 includes a connection frame 15 extending in the front-rear direction between the transmission case 13 disposed on the front portion and the rear-side accelerator case 14 disposed on the rear portion, As shown in Fig. 16 extending in the lateral direction from the left and right side wall portions of the transmission case 13 to extend downward from the outer ends of the shaft cases 16, A pair of front wheels 19 and 19 are attached to the outer lower ends of the front axle cases 17 and 17 via front axles 18 and 18 so as to extend the front axle cases 17 and 17. A pair of left and right rear wheels 21 and 21 are attached to left and right outer ends of the rear axle case 14 through rear axles 20 and 20, respectively. The connecting frame 15 has a rectangular cross section and is formed into a pipe shape extending linearly in the front-rear direction. An engine 22 as a driving base is mounted on the connecting frame 15.
As shown in Fig. 20, the engine 22 and the mission case 13 are interconnected through a first transmission mechanism 150. As shown in Fig. The transmission case 13 and the rear axle case 14 are connected to each other through a second transmission mechanism 160. The transmission case 710 of the transmission case 3 and the transmission case 13 are connected to each other through the third transmission mechanism 170. [
2 and 20, the clutch case 130 is provided in the middle portion of the third transmission mechanism 170 and the clutch case 130 is provided at the right rear portion of the lower body 11 have. The clutch case 130 is provided with a clutch mechanism 141, a daytime adjusting mechanism 142, a grafting power take-out mechanism 143 and a fertilizer power take-out mechanism 144, .
On the support frame 25, as shown in Figs. 1 to 3, the upper body 12 is stretch-coated. A handle 31 is provided on the front portion of the upper body 12 through a handle column 35. A driver's seat 45 is mounted on the middle portion of the upper body 12 and the driver's seat 45 is disposed behind the cover member 44 covering the periphery of the handle column 35. [ A flat step portion 46 is formed on the rear portion of the upper body 12, and the step portion 46 is disposed on the cell tray.
Next, the power transmission structure of the traveling section 1 will be described with reference to Fig. The engine 22 is connected to the transmission case 13 via a first transmission mechanism 150. [ The first transmission mechanism 150 is formed by winding a transmission belt 903 between pulleys 901 and 902 between a drive shaft 23 of the engine 22 and an input shaft 900 provided in the transmission case 13.
The transmission case 13 is provided with a hydraulic pump 910 having a variable swash plate and a hydrostatic constant speed transmission 912 composed of a hydraulic motor 911. The hydraulic pump 910 is connected to the input shaft 900 in an interlocked manner. The hydraulic motor 911 is fluidly connected to the hydraulic pump 910 and the peripheral speed mechanism 914 is interlockingly connected to the output shaft 913. 915 is the main clutch, and 916 is the peripheral speed shaft. A front wheel axle 917 extending in the left and right direction is connected to the peripheral speed shaft 916 in a linking manner and the front axles 918 and 918 and the front axles 18 and 18 are connected to left and right ends of the front wheel transmission shaft 917, And a pair of front wheels 19 and 19 are interconnected and connected.
On the left side of the transmission case 13, there is provided a power output shaft 919 with its axis in the front-rear direction. The power output shaft 919 has a proximal end connected to the peripheral speed shaft 916 and a second power transmission mechanism 160 connected to the power input shaft 920 protruding forward from the rear accelerator case 14, And is connected through a link. The second transmission mechanism 160 is formed of a transmission shaft extending in the front-rear direction.
The rear axle case 14 is provided with a rear wheel axle 921 extending in the left-right direction. The intermediate portion of the rear wheel transmission shaft 921 is linked to the proximal end of the power input shaft 920 and the rear axles 922 and 922 are connected to the right and left portions of the rear wheel transmission shaft 921 through the rear axles 20 and 20 And a pair of left and right rear wheels 21 and 21 are interconnected and connected. 923 is a side clutch.
A PTO shaft 930 having an axis in the front-rear direction is provided at the right rear portion of the mission case 13. The PTO shaft 930 is connected to the interlocking shaft 931 connected to the peripheral speed mechanism 914. The power take-off unit 710 of the implanted portion 3, which will be described later, The third transmission mechanism 170 is interlocked with the third transmission mechanism 170. [ The third transmission mechanism 170 is formed by an upstream-side transmission shaft 932 and a downstream-side transmission shaft 933.
The upstream transmission shaft 932 links the front end portion of the PTO shaft 930 and the proximal end portion of the first transmission support shaft 146 provided in the clutch case 130 in an interlocked manner. The downstream side transmission shaft 933 is connected to the front end of the second transmission support shaft 147 provided in the clutch case 130 and the power take-off shaft 711 projected forward from the power acquisition portion 710 shown in Fig. And the distal end of the second end portion of the second end portion. The downstream-side power transmission shaft 933 is formed so that its center can be folded and expanded and contracted.
[Elevating Mechanism Part (2)]
As shown in Fig. 2, the elevating mechanism portion 2 is vertically rotatably attached to the elevating mechanism supporter 24 when viewed from the back surface forming the rear portion of the supporting frame 25. 4, the lifting mechanism portion 2 includes a top link piece 180 extending in the front-rear direction, a pair of left and right lower link pieces 181 and a rear end connecting piece 182, and a single-acting lifting cylinder 183, .
The upper end connecting piece 182 is raised by shortening the operation of the lifting cylinder 183 by supplying the pressurized oil to the lifting cylinder 183 in the above-described manner, while the pressurized oil supplied to the lifting cylinder 183 is discharged, The implant portion 3 connected to the instrument support body 24 is lowered by its own weight.
[Transplanting section (3)]
As shown in Figs. 1 to 7, the transplanting section 3 is provided with a pair of left and right seedling supplying means 200 and 200 for supplying a seedling to the front part of the supporting frame 110 through the lateral transfer frame 128 . The transplanting units 390 and 390 are installed on the rear part of the supporting frame 110 through a pair of right and left unit base frames 380 and 380. The transplanting unit 390 is provided with a seedling drawing means 400 for drawing a seedling from the seedling feeding means 200 and a seedling drawn out by the seedling drawing means 400 by being installed below the seedling drawing- (500) for feeding food.
The support frame 110 includes a frame body 120 formed in a rectangular frame shape when viewed in plan view, a frame body 120 having a frame-like raised frame body 127 and a horizontal transfer frame 128 which is mounted on the vertical frame body 127 so as to be reciprocatable in the lateral width direction (horizontally transferable). The lateral transfer frame 128 is provided with seedling supply means (Not shown).
A transmission gear case 121 is detachably connected to the left side portion of the frame body 120 and the power from the engine 22 provided on the traveling portion 1 through the transmission gear case 121 is transmitted to the lateral transfer frame 128 to the seedling feeding means 200. A planar shaft support 122 extending in the vertical direction is provided on the right side of the frame body 120 and a pair of axle supports 122 extending in the left and right direction between the right and left shifting gear case 121 and the shaft support 122 And the paper pneumatic axle 123 is suspended horizontally. The lateral transmission shaft 125 extending in the left-right direction is sandwiched between the paper shafts 123 between the transmission gear case 121 opposed to the right and left and the shaft support bracket 124 provided on the right side of the frame body 120, And is located on the lower side thereof.
As shown in Figs. 6 and 7, each seedling supplying means 200 includes a seedling bearing belt 210 extending in the vertical direction and a paper transferring device 211 provided below the seedling bearing belt 210 . The seedling feeding means 200 on the right side is provided with a paper feeding drive mechanism 212 linked to the paper feeding shaft 123 via a paper feeding cam 126. The right end of the paper-feeding drive shaft 213 extending in the left-right direction is connected to the paper-feeding driving mechanism 212 in an interlocked manner.
8 and 9, a cell tray 214 having cells 215 vertically and horizontally arranged to house cell seedlings is stacked on a seedling tray 210, and a cell tray 214 And is slid to the paper feeding mechanism 211. The cell trays 214 loaded on each of the seedling supplying means 200 and further to each of the seedling supplying means 200 transversely move along the pitches of the cells 215 through the shafts 125, The cell tray 214 loaded on the means 200 is intermittently moved from the upper side to the lower side via the paper shafts 123 every pitch of the cells 215.
The seedling feeding means 200 will be described in more detail. 6 and 7, in order to allow a plurality of cell trays 214 to be stacked in series, the seedling tray 210 of the seedling supplying means 200 may be a plate- The left and right guide portions 221 and 221 formed in a projected shape from the surface of the seedling tray main body 220 and extending in the vertical direction along the left and right side edge portions of the seedling tray main body 220, .
The seedling tray 210 is attached to the transverse conveying frame 128 in an inclined posture of the front and rear and the left and right side edges of the cell tray 214 are stacked on the upper surfaces of the left and right guide portions 221 and 221, And the cell tray 214 is disposed between the left and right guide portions 221 and 221 in a state where the cell tray 214 is disposed between the left and right guide portions 221 and 221 while the cell 215 is disposed on the seedling tray main body 220, To slide downward by its own weight.
6 to 9, the seedling bearing member 210 is provided with a sliding suppressing member 230 which is in contact with a lower surface of the cell tray 214 to suppress sliding downward of the cell tray 214 . 8 and 9, the sliding inhibitor 230 is formed in a tubular shape of stainless steel having substantially the same outer diameter as the width of the groove 217, and the length of the seedling rack body 220 And is provided at a substantially central position on the upper surface of the seedling bearing table main body 220 in the left and right direction. A plurality of bulges are intermittently formed along the extending direction of the sliding suppressor 230. The first and second swollen portions 231 and 232 are formed in the same manner as the first and second swollen portions 231 and 232 of the cell tray 214. The first and second swollen portions 231 and 232, So as to prevent the cell tray 214 from sliding downward.
The first and second bulge portions 231 and 232 are inserted into the groove portion 217 formed between the adjacent cells 215 and 215 in the left and right direction on the lower surface of the cell tray 214, To be in contact with the side surfaces of the cells (215, 215). The first and second bulge portions 231 and 232 intermittently formed on the sliding inhibitor body 230 vary the maximum bulge widths W1 and W2 that expand upward from the seedling bearing table main body 220 have.
That is, the sliding inhibitor 230 extends from the upper end portion 233 in contact with the surface of the seedling rack body 220 along the extending direction (downward direction) along the seedling rack body 220, And the middle portion 234 is made to approach the surface of the seedling tray main body 220 by making the swelling width (isolation width) W1 suddenly approach the side of the seedling tray main body 220, The first bulging portion 231 is formed. Then, it extends from the intermediate portion 234 until it becomes an extension length of about 2.5 times the first swollen portion 231 in the extending direction (downward direction) along the seedling rack body 220, The lower end portion 235 is curved toward the seedling tray main body 220 side in the swelling width W2 to form the second swelling portion 232 have. P1 is the sliding direction.
9A, the sliding inhibitor 230 is disposed above the cells 215 and 215, and the side surfaces of the cells 215 and 215 are pressed slightly inward, as shown in Fig. 9 (a) Transforming. In this case, the upper portions of the side surfaces of the cells 215 and 215 are pressed against the sliding suppressor 230 to slide, and the sliding inhibitor 230 slightly resists sliding due to the self weight of the cell tray 214, The sliding of the slide member 214 is slightly suppressed.
9 (b), the sliding suppressor 230 is disposed below the cells 215 and 215, and the side surfaces of the cells 215 and 215 are not deformed And is in contact with the side surface. Therefore, in this case, the lower portions of the side surfaces of the cells 215 and 215 are brought into sliding contact with the sliding suppressor 230 so that sliding due to its own weight is hardly suppressed.
9 (c), the sliding inhibitor 230 is disposed at the upper end of each of the cells 215, 215, and the side surface of the cells 215, 215 is pressed inwardly I have to. Therefore, in this case, the upper ends of the side surfaces of the cells 215 and 215 are pressed and deformed by the sliding inhibitor 230 to slide, and the sliding inhibitor 230 becomes a large resistance against sliding due to the self weight of the cell tray 214, The sliding of the tray 214 is greatly suppressed. Therefore, when the first cell tray 214 slides on its own weight and collides with the paper feeding mechanism 211, or when the second cell tray 214 slides under its own weight and its lower edge portion moves to the first cell tray 214 It is possible to avoid the problem that cell seedlings in the cell tray 214 drop off from the cell tray 214 due to the impact when the upper end portion of the cell tray 214 collides with the upper end edge of the cell tray 214,
The sliding inhibitor 230 provided on the seedling tray main body 220 contacts the lower surface of the cell tray 214 to suppress the downward sliding of the cell tray 214, It is possible to solve the problem of slipping down on the seedling pedestal body 220 due to its own weight in a dropped state. That is, the cell tray 214 can be smoothly slid on the seedling tray main body 220. Therefore, particularly, the problem that the second cell tray 214 collides with the first cell tray 214 and the cell seedlings in the cell tray 214 are dropped from the cell tray 214 due to an impact at that time Can be prevented. It is no longer necessary for the operator to guide the cell tray 214 until it is connected to the first cell tray 214 while holding the second cell tray 214.
The sliding inhibitor 230 is disposed at a central position in the left and right widthwise directions of the top surface of the seedling tray body 220 and the first and second sliding inhibitors 230 are disposed on the sliding tray 230, Since the second bulging portions 231 and 232 are formed, the first and second bulge portions 231 and 232 position the cell tray in the lateral direction. Since the first and second bulging portions 231 and 232 contact the lower surface of the cell tray 214 to suppress the downward sliding of the cell tray 214, It is possible to reliably prevent the main body 220 from slipping down into the falling state.
Since the first and second bulging portions 231 and 232 are inserted into the groove portion 217 formed in the lower surface of the cell tray 214, the first and second bulge portions 231 and 232 move the cell tray 214 in the left- And the first and second bulging portions 231 and 232 can be brought into contact with the side surfaces of the cells 215 and 215 adjacent to each other at least in the left and right direction. That is, the first and second bulging portions 231 and 232 can be in surface contact with the side surfaces 216 and 216 of the adjacent cells in the left-right direction. Therefore, the sliding suppression effect (the brake effect) of the first and second bulged portions 231 and 232 to the cell tray 214 can be surely ensured.
Although the total weight of the cell tray 214 accommodating the cell seedlings varies depending on the type of cell seedlings, a plurality of the first and second bulged portions 231 and 232 are formed intermittently so that the first and second bulged portions 231 and 232 It is possible to prevent the problem that the sliding inhibition effect (brake effect) is excessively generated and the sliding of the cell tray 214 is inhibited.
The weight of the entire cell tray 214 accommodating the cell seedlings differs depending on the kind of cell seedlings, but the cell tray 214 may be formed by expanding upward from the seedling tray main body 220 of the first and second bulge portions 231 and 232 intermittently formed (The swell width W1 <the swell width W2) and the corresponding range by the first and second swelling parts 231 and 232 to all the cell trays 214 (Brake effect) by the first and second bulging portions 231 and 232 can be reliably ensured. The swelling width of the first and second swollen portions 231 and 232 is gradually changed along the extending direction of the seedling bearing housing main body 220 so that the first and second swollen portions 231 and 232 are surely brought into contact with the sliding positions of all the cell trays 214 The first and second bulge portions 231 and 232 can be broadly matched to all the cell trays 214. Therefore, the sliding suppressing effect (the brake effect) by the first and second bulging portions 231 and 232 can be securely ensured.
The regulating member 240 is extended from the lower end 235 of the sliding inhibitor 230 to the longitudinal end of the paper transfer mechanism 211 so as to extend in the extending direction of the sliding inhibitor 230 ). The regulating member 240 is formed in a thin strip having a small width in the vertical direction so that the regulating member 240 is inserted into the groove 217 in the central portion of the cell tray 214. The thickness of the regulating member 240 is formed to be shorter than the width of the groove 217 in the central portion of the cell tray 214 so that the connecting portion of the cells 215 and 215 slides on the upper surface of the regulating member 240. In this manner, the regulating member 240 does not restrict the sliding of the cell tray 214 by regulating the lateral displacement of the cell tray 214. [
The paper feeding mechanism 211 includes a paper feeding drive shaft 213 extending in the left and right direction by linking the right end of the paper feeding driving mechanism 212 to the paper feeding driving shaft 212, A pair of left and right sprockets 952, 952, 953 and 953 coaxially attached to the respective shafts 213 and 951 and a pair of sprockets 951 and 952 opposed to each other between the shafts 213 and 951, And a plurality of paper engaging / disengaging pieces 955 which are disposed between the transmission chains 954 and 954 and are spaced apart from each other in the paper feeding direction. The left manipulation knob 372 is attached to the left end of the paper feed coaxial shaft 951 on the left side and the right manipulation knob 373 is attached to the right end of the paper feed coaxial shaft 951 on the right side.
In this way, the transmission chains 954 and 954 are intermittently driven to feed paper by pitches of the cells 215 via the sprockets 952, 952, 953 and 953 by the paper feeding drive shaft 213. [ That is, the paper transferring is performed in a state in which the paper transfer engaging piece 955 transversely disposed between the electric chains 954 and 954 is in a side-by-side position. A plurality of grooves 217 extending linearly in the left and right direction are formed on the lower surface of the cell tray 214 formed by vertically and horizontally arranging the cells 215. The grooves 217 are provided with grooves 217 between the electric chains 954 and 954 The paper feeding engaging piece 955 is engaged with the back surface of the cell 215 and the cell tray 214 is moved by paper.
As shown in Figs. 8, 10 and 11, the seedling supplying means 200 is provided with a seedling tray 214 in which the cell seedlings 214 from which all the cell seedlings are drawn are folded back from the end portion of the paper feeding mechanism 211, Cell tray collecting mechanism 244 which is taken out to the bottom side of the supplying means 200 and recovered.
The empty cell tray retrieving mechanism 244 allows the empty cell tray 214 taken out to the lower surface side of the seedling supplying means 200 to be taken out to a position near the driver's seat 45 provided on the traveling section 1. [ A flat step portion 46 is stretched substantially horizontally at the rear portion of the upper body 12, that is, at left and right rear positions of the driver's seat 45, and a pair of right and left The empty cell trays 214 and 214 carried out from the cell tray collecting mechanism 244 are stacked so that the step portion 46 is discharged as the cell tray.
The empty cell tray 214 taken out to the lower surface side of the seedling supplying means 200 in the shape of being folded back from the end portion of the paper feeding mechanism 211 is taken out along the lower surface of the seedling feeding means 200, It can be recovered only from the upper direction before it is taken out to the position. At least a part of the empty-cell tray 214 taken out onto the step portion 46 is arranged in the field of view of both eyes of the operator who is seated on the driver's seat 45 and maneuvers in a forward direction. Here, the field of view of both eyes of the operator is generally 200 degrees at the maximum, and extends to the left and right rear positions of the operator sitting on the driver's seat 45. [ In the present embodiment, the front end edge portions of the empty cell trays 214 and 214 are located at the left and right near side positions of the driver's seat 45. [ Therefore, the operator can retrieve the empty-cell trays 214 and 214 while being seated in the driver's seat 45.
More specifically, the open-cell tray collecting mechanism 244 includes a front surface side guide portion (a guide portion) 244 for guiding from the seedling tray 210 to the top end portion of the paper feed mechanism 211 An inversion guide portion 247 which is arranged at a rear lower portion of the upper surface side guide portion 246 to follow the trailing edge portion of the paper feeding mechanism 211 to invert the empty cell trays 214 and 214, And the empty cell trays 214 and 214 that are inversely guided by the guide members 247 and 247 are guided along the rear surface (lower surface) side of the seedling tray 210 to a position above the step portion 46 of the traveling section 1 in a straight line And a stepping portion 242 for placing the empty cell trays 214 and 214 which are brought out and guided up to a position above the step portion 46 of the running unit 1 by the upwardly unloading guide portion 248, Out guide portion 249 for carrying out the guide-out in the form of an arc up to a position near the rear end of the guide portion 46 The.
The upper surface side guide portion 246 is provided between the upper portion of the left and right guide portions 221 and 221 of the seedling mount 210 and the inverting guide portion 247 and includes a pair of left and right upper surface side guide rods 250 and 250 And the upper surface side guide rods 250 and 250 are disposed in the upper right position of the left and right side edge portions of the cell trays 214 and 214, respectively. The left and right guide portions 221 and 221 support the left and right side edge portions of the cell tray 214. The pair of left and right upper side guide rods 250 and 250, So that the cell tray 214 is guided to the top end side of the paper feeding mechanism 211. 251 is a first support for supporting the upper end of the upper surface side guide rod 250, 252 is a second support for supporting the upper end of the surface side guide rod 250, 253 is a top surface side guide Side guide rod 250 to the lower side of the upper surface side guide rod 250. [ Reference numeral 245 denotes a center guide rod and the center guide rod 245 extends from the central portion on the upper surface side of the inversion guide portion 247 to the middle portion of the paper feeding mechanism 211 to guide the center portion of the upper surface of the cell tray 214 downward .
The inversion guide portion 247 is provided with a pair of left and right pivotal support plate members 262 and 263 for pivotally supporting the paper feeding drive shaft 213 through the left and right pivotal support members 260 and 261 and a pair of right and left pivotal support plate members 262 and 263 respectively disposed at upper and lower portions of the rear end edge portions of the pivotal support plate members 262 and 263 266, 268 which extend over the left and right side portions and the middle portion between the connecting connecting bodies (264, 265) and the connecting connecting bodies (264, 265). The shaft support plate members 262 and 263 are provided with notch holes 269 and 270 for inserting the paper feeding drive shaft 213 in the front portion thereof and a rear end edge portion of the circular plate supporting plate members 262 and 263 are formed in a circular arc shape in which the outer diameter of the sprocket 952 of the paper feeding mechanism 211 is substantially aligned. Respectively.
The rear end edge portions of the arc-shaped guide bodies 266, 267, and 268 are formed in a circular arc shape in which the rear end edge portions of the shaft support plate bodies 262 and 263 substantially follow. The front end edge portions of the bow-shaped guide bodies 266, 267, and 268 are formed in an arc shape that substantially follows the outer diameter of the sprocket 952 of the paper feeding mechanism 211. The cell tray 214, which is fed by the paper feeding mechanism 211, is bent along the upper edge portion of the bow-shaped guide bodies 266, 267, 268 and inverted (turned on) by the upwardly-directed guide portion 248 side. P2 is the reverse direction.
The upwardly upwardly projecting guide portion 248 is provided with a pair of right and left lower guide wire members 271 and 272 extending in the vertical direction and is provided between the lower guide wire members 271 and 272, (273).
A wire rod set support frame 274 is provided between the back side intermediate portion of the seedling bearing support 210 and the upper portion of the shaft support plate members 262 and 263. The wire rod set support frame 274 is provided with the left and right extended support pieces 275 extending in the lateral direction on the rear side of the seedling bearing support 210 and the left and right extended support pieces 275 are provided from the left and right ends of the left and right extended support pieces 275, 275 are bent forward and backward to form bending portions 278, 279 and extended to the upper portions of the shaft supporting plate bodies 262, 263, And the front end portions of the support bodies 276 and 277 are attached to the upper portions of the bodies 262 and 263.
Between the bent portions 278 and 279, an upper supporting piece 282, which is a wire extending in the left-right direction through the stays 280 and 281, is provided. Supporting members 283 and 284 protrude from the support members 276 and 277 toward the charge chamber so that the support members 283 and 284 extend in the transverse direction. The projecting pieces 286 and 287 project forward from left and right portions of the lower connecting body 265 provided in the reversing guide portion 247. [
The lower guide wires 271 and 272 connect the upper end to the upper support piece 282 and connect the middle portion to the middle support piece 285 and connect the lower end to the projecting pieces 286 and 287. The upper guide wire 273 is connected to the upper end of the upper guide piece 271 through the upper connecting piece 290 at the center of the left and right extended support pieces 275 and the lower end of the lower end guide piece 273 at the center of the downward- Respectively.
The middle portion 292 of the upper side guiding wire 273 is bulged forward and the middle portion 292 is positioned at the position immediately after the lower side guiding wires 271 and 272 to the side of the lower guiding wire 271 and 272 And are arranged so as to be parallel to each other in the vertical direction. The lower guide wires 271 and 272 support the left and right portions of the empty cell trays 214 and 214 from below to guide the upper and lower guide wires 271 and 272 upwardly and upwardly while the upper guide wires 273 are disposed in the empty cell trays 214 and 214, So as to be guided to the upper side in the upper position of the central portion of the guide portion.
The charge discharge guide portion 249 extends from the stays 280 and 281 provided at the bent portions 278 and 279 of the support main bodies 276 and 277 to the vicinity of the step portion 46 stretched in the running portion 1 forward, The arms 293 and 294 are extended toward the charge chamber and the shear dextral pieces 297 are provided transversely between the tip ends of the charge expanding arms 293 and 294. The shear deformation of the lower guide wires 271 and 272 And the front ends of the pair of left and right charge-radiating guiding wire materials 295 and 296 formed by curving in a convex shape are connected.
The empty-cell tray 214 taken out to the position above the step portion 46 of the running unit 1 by the upwardly-unfolding guide unit 248 may be artificially drawn out upwards from it, but if left untouched The sheet conveying mechanism 211 receives the paper conveyance action and pushes up the empty-cell tray 214 preceded by the next empty-cell tray 214 in which the reversal guide 247 is reversely carried out and guided, Followed by the wire rods 295 and 296, to the charge chamber. P3 is the carry direction. As a result, the empty-cell trays 214 guided outwardly and downwardly along the charge guiding wires 295 and 296 are carried out onto the step portion 46 of the traveling portion 1, The front edge portion of the empty cell tray 214 is carried out to the left and right rear positions within the visual range of the operator sitting on the driver's seat 45 toward the front.
The operator who sits on the driver's seat 45 and performs the traveling operation moves away from the driver's seat 45 and moves to the bottom side of the seedling feeding means 200 on which the empty-cell tray 214 is taken out, There is no need to collect the sheets 214 one by one (it is not troublesome). There is no need to stop the traveling section 1 in the first order when the empty-cell tray 214 is collected. As a result, the work efficiency can be improved.
Since the empty cell tray 214 carried on the fixed step portion 46 is disposed, the collecting operation of the empty cell tray 214 can be performed easily and safely. Even when the air blown from the side is blown up to a position near the driver's seat 45 or the like, it is possible to recover the air-cell tray 214 reliably before it is reliably recovered. It is possible to recognize that the empty-cell tray 214 is carried out in the same posture even when the operator is seated on the driver's seat 45 and is moving forward while facing the front. Therefore, the operator does not need to recognize the rear part of the rear side, which can improve the safety and efficiency of the seedling transplanting work.
Various feeding mechanisms 211 are coaxially and cooperatively connected to a paper feeding drive shaft 213 and paper feeding clutches 300 and 301 for connecting and disconnecting the driving to the paper feeding driving shaft 213 respectively. Each of the paper clutches 300 and 301 is normally fixed in a state where the shaft body and the drive shaft body are cut off. Paper feed position adjusting mechanisms 302 and 303 for adjusting the paper feed position of the cell tray 214 are provided in the paper feed clutches 300 and 301, respectively.
As shown in Fig. 12, the paper-feeding drive shaft 213 has a drive shaft body extending linearly with one side (the right side in this embodiment) serving as a power input side and a normal shaft body fitted outside from the other side of the drive shaft body And a paper feed mechanism 211 of the other side (left side in the present embodiment) is connected to the shaft body in an interlocked manner, and a left side paper clutch 300 is interposed between the normal shaft body and the drive shaft body. The left paper clutch 300 normally engages with either one of the shaft body and the drive shaft body and engages and disengages from the other one only at a certain angle so that the shaft body and the drive shaft body can be connected and disconnected .
More specifically, as shown in Figs. 10 and 12, the paper feeding drive shaft 213 is provided with left and right support members 260 and 261 on a pair of left and right pivotal support plate members 262 and 263 fixed to the left seedling feeding means 200, And a pair of right and left pivotal support plates 262 and 263 fixed to the seedling supply unit 200 on the right side support the right half through the left and right support members 260 and 261. [ The right axis support body 261 of the seedling feeding means 200 on the right side is formed to penetrate the paper conveyance drive case 310 of the paper feed driving mechanism 212 in the left and right direction. The support shaft 311 is rotatably supported around its axis and the right shaft 312 which is the right end of the paper transfer drive shaft 213 is rotatably inserted into the support shaft 311 around its axis .
The paper conveyance drive shaft 213 has a left shaft 313 as a drive shaft body extending in the left and right direction and a normal left sprocket support shaft 314 as a normal shaft member which is fitted on the outer periphery of the left shaft 313 and is concentrically rotated. And a left side shaft 313 connected to the left sprocket support shaft 314 through a linking member 315. The left side shaft 313 is connected to the right side end of the left shaft 313 by spline engagement, A normal right sprocket support shaft 317 interlocked and coaxially provided at the right end of the interlocking connector 316 and a normal right sprocket support shaft 317 and a right sprocket support shaft 317, And a right-side shaft 312 which is inserted into the right end portion of the right-hand side of FIG. A pair of right and left sprockets 52, 952, 952, and 952 are attached to the outer periphery of the left and right sprocket support shafts 314 and 317, respectively.
As shown in Figs. 13 to 16, the left paper clutch 300 includes a clutch main body 320 slidably attached to the left end of the left shaft 313 in the axial direction, An adjustment flange 321 on one flange and an adjustment flange 322 adjustably attached to the same flange 321 on the same axial line and a fitting hole 323 formed in the center of the adjustment flange 322, And an interlocking member 315 having an engaging projection 324. [
The clutch main body 320 is normally formed so that the spline female threaded portion 325 is formed at the center of the inner peripheral surface and the spline female threaded portion 325 is engaged with the spline male threaded portion 326 formed on the left end outer peripheral surface of the left shaft 313 Fit in the spline and can slide in the axial direction. A small diameter portion 327 having a step is formed at the tip end of the left shaft 313 having the spline male thread portion 326 formed therein and a spring receiving plate 328 is fixed to the end surface of the left shaft 313 with a fixing bolt 329 .
The urging spring 330 is wound around the outer periphery of the small diameter portion 327 formed with the stepped portion so that the left end of the urging spring 330 is brought into contact with the outer peripheral surface portion of the spring receiving plate 328, The right end portion of the urging spring 330 is brought into contact with the end surface portion of the pressing spring 330. [
At the position where the spline male threaded portion 326 of the clutch main body 320 is formed, the stagnating body 331 is inserted in the radial direction. The engaging ball 332 is biased by pressure on the outer peripheral surface side of the left shaft 313 by an elastic body (not shown) at the distal end of the movable body 331. Diameter portion 333 having a step is formed on the inner peripheral surface of the right side portion of the clutch main body 320 than the spline female screw portion 325. [ Reference numeral 338 denotes an anti-falling ring coupled to the right side of the spline male thread portion 326.
The gripping portion 337 is formed on the outer peripheral surface of the left side portion of the clutch body 320 to grip the constricted portion 337 to slide the clutch body 320 against the biasing of the urging spring 330 to the left side The engaging hole 323 of the adjusting plate 322 is moved from the substantially quadrangular outer peripheral face portion 342 of the interlocking body 315 to be described later by engaging the engaging ball 332 with the outer periphery of the small- And is fixed temporarily at the disengaged position (clutch disengaging position) (see Fig. 16 (b)).
The engaging ball 332 is moved onto the spline male thread portion 326 by pushing the clutch main body 320 to the right side and the peripheral surface of the interlocking body 315 to be described later is chamfered on a substantially square outer circumferential surface. The protruding portion 324 is tentatively released at a position (clutch connecting position) where it is engaged with the fitting hole 323 of the adjusting plate 322 (see Fig. 16 (a)). An attachment flange 321 is attached to the outer peripheral surface of the right end of the clutch body 320. A pair of circular adjustment holes 334 and 334 are formed on the outer end of the attachment flange 321 on a concentric circle centering on the axis of the clutch body 320 ).
The adjustment plate 322 is formed with a substantially square fitting hole 323 at the center and has insertion bolts 335 and 335 protruding from the outer side to be inserted into the circular adjustment holes 334 and 334, 336 and 336 are screwed. By loosening the female screw portions 336 and 336, the relative positions of the adjusting plate 322 and the attaching flange 321 about the axial line can be changed and the relative position of the axial line of the fitting hole 323 and the left shaft 313 And the left side paper position adjusting mechanism 302 is formed so as to be adjustable.
The interlocking body 315 is formed as usual and the right half 340 is rotatably inserted into the left and right support bodies 260. A circular outer circumferential surface portion 341 formed in an inner circumferential surface of the large diameter hole portion 333 where the stepped portion of the clutch main body 320 is formed to conform to the outer circumferential surface shape so as to be engageable with the circular outer circumferential surface portion 341, An engaging protrusion 324 which is an approximately square outer circumferential surface portion formed by fitting an outer circumferential surface shape of the fitting hole 323 of the adjusting plate 322 in such a manner as to fit the outer circumferential surface of the fitting hole 323 and a substantially rectangular outer circumferential surface portion 342, And has a circular flange-shaped adjustment plate portion 343 and an anti-drop C-ring engagement groove 344 formed adjacent to the right side of the adjustment plate portion 343. 345 is an anti-slip C-ring joined to the anti-drop C-ring engagement groove 344.
When the paper feeding engaging piece 955 provided on the left paper feeding mechanism 211 is engaged with the groove 217 on the best end side of the cell tray 214, the left paper feeding clutch 300 is fixed to the cut state The paper joining piece 955 is set to a desired position by appropriately rotating the left operation knob 372 attached to the left end of the paper feeding coaxial shaft 951 in the normal state.
At this time, the position of the groove 217 on the best-end side of the cell tray 214 coupling the paper engaging piece 955 and the position of the pair of right and left When the paper feeding position adjustment for adjusting the advancing position of the seedling draw-out claws 410 and 410 is performed, the female threaded portions 336 and 336 of the paper feeding position adjusting mechanism 302 are loosened so that the insertion bolts 335 and 335 are inserted into the arc adjusting holes 334 and 334 The left and right knobs 372 are appropriately rotated in the forward and reverse directions to set the setting positions of the paper engaging piece 955 and the cell tray 214 and the advancing positions of the seedling drawing claws 410 and 410 The engaging holes 323 of the adjusting plate 322 are inserted into the engaging protrusions 324 and then the female screws 336 and 336 are fastened to the insertion bolts 335 and 335 to adjust the paper conveying position, .
If a plurality of paper feeding / engaging pieces 955 are arranged at intervals of 90 degrees in the winding angle of the transmission chain 954 wrapped around the sprocket 952, for example, Five cells 215 and four cells 215 are accommodated in the cell trays 214 of the two types of cell trays 214 and between the adjacent paper conveyance coupling pieces 955 and 955, . Therefore, the engagement hole 323 of the adjustment plate 322 is formed in a square shape, and the outer peripheral surface shape of the inner peripheral surface of the adjustment plate 322 is matched so that the engagement projection 324 can be fitted in the engagement hole 323, And the left shaft 313 can be held at an angle of 90 degrees and the installation position of the paper engaging piece 955 can be kept constant at all times.
The paper clutch 301 on the right side is attached to a normal support shaft 311 provided concentrically on the right shaft 312 of the paper transfer drive shaft 213 shown in Fig. The power transmission and power transmission to the paper feeding drive shaft 213 can be connected and disconnected by the paper clutch 301 on the right side.
17 to 19, the first and second transmission gears 350 and 351 are rotatably attached to the outer peripheral surface of the support shaft 311, The first and second external gears 353 and 354 provided on the right and left side portions of the shift gear 352 are engaged with the first and second external gears 353 and 354 arranged on the outer circumferential surface of the support shaft 311, The first and second internal gears 355 and 356 can be alternatively connected to the opposite surfaces of the second shift gears 350 and 351, respectively. That is, the first external gear 353 is connected to the first internal gear 355, or the second external gear 354 is connected to the second internal gear 356.
The neutral position in which the shift gear 352 is disposed in the middle of the first and second shift gears 350 and 351 and is not connected to any of the shift gears 350 and 351 is set as the clutch disengagement position. A shift lever 359 functioning as a clutch lever is interlockingly connected to the shift gear 352 via a shifter 357 and a shifter supporting shaft 358. [ In addition, the shift operation lever 359 is locked to a fixed locking member (not shown) fixed to the first shift position and the neutral position and the second shift position.
A paper feeding position adjustment mechanism 303 on the right side is interposed between the right shaft 312 of the paper feeding drive shaft 213 and the normal supporting shaft 311. That is, the paper feed position adjusting mechanism 303 on the right side attaches the attachment flange piece 361 to the outer peripheral surface of the right end of the normal support shaft 311 protruding outward from the paper delivery drive case 310, And a female screw hole 362 is formed at the center of the outer end of the shaft 361.
On the other hand, the right end portion 363 of the right shaft 312 inserted into the support shaft 311 is formed into a substantially square cross-sectional shape and is normally projected from the right end surface of the support shaft 311 to the right chamber, 312 is detachably attached to the right end portion 363 of the housing 311. [ The adjustment member 364 is formed by an attachment piece 365 detachably attached to the right end portion 363 of the right shaft 312 and an adjustment piece 366 interposed in the attachment piece 365. The attachment piece 365 is formed with a substantially square insertion hole 367 for inserting the right end portion 363 of the right shaft 312 and a notch hole 368 connected to the substantially square insertion hole 367 and notched to the lower end portion And a fastening bolt 369 is attached to the attachment piece 365 so as to cross the notch hole 368. [
The right end 363 of the right shaft 312 inserted into the approximately square insertion hole 367 is connected by interlocking with the fastening bolt 369. The adjustment piece 366 is formed with an arcuate adjustment hole 370 which is aligned with the female screw hole 362 on a concentric circle centering on the axis of the right shaft 312. The adjusting bolt 371 is inserted into the adjusting hole 370 and the adjusting bolt 371 is screwed to the female screw hole 362 so that the adjusting flange 361 can be connected to the mounting flange 361. By loosening the adjustment bolt 371, the relative position of the adjustment member 364 and the attachment flange piece 361 about the axial line can be changed, and the relative position between the support shaft 311 and the right shaft 312 And the paper position adjusting mechanism 303 on the right side is formed so that the relative position can be adjusted.
When coupling the paper engaging piece 955 provided on the paper conveying mechanism 211 on the right side to the groove 217 on the best end side of the cell tray 214, the right paper conveying clutch 301 is set at the neutral position The paper joining piece 955 is set to a desired position by appropriately rotating the right knob 373 attached to the right end of the paper feeding coaxial shaft 951 at the same position.
At this time, the position of the groove 217 on the best-end side of the cell tray 214 coupling the paper engaging piece 955 and the position of the pair of right and left The adjusting bolt 371 of the paper feeding position adjusting mechanism 303 is loosened and the adjusting bolt 371 is moved in the adjusting hole 370 The setting position of the paper feeding engaging piece 955 and the cell tray 214 and the advancing position of the seedling drawing claws 410 and 410 are set by appropriately rotating the right manipulation knob 373 in the forward and reverse directions , And the adjusting bolt 371 is tightened to adjust the paper conveying position.
The abnormal displacement of the right end 363 of the right shaft 312 formed on the substantially square cross-section for insertion into the approximately square insertion hole 367 and the adjustment member 364 having the approximately square insertion hole 367 90 degrees, and the mounting position of the paper-coupling member 955 can be always kept constant.
12 and 21, the paper-feeding driving mechanism 212 includes a first roller 962 which contacts the paper feeding cam 126 and the fixed cam 961 provided at the front end of the paper feeding shaft 123, A second roller 964 contacting the way cam 963, and a group of paper-transmission driving gears 965 interlocked with the second roller 964. [
In this manner, the paper traps 300 and 301 provided respectively to the paper transfer mechanisms 211 and 211 of the left and right seedling supplying units 200 and 200 are manually operated to load the cell trays 214 and 214 on the seedling trays 210 and 210 The separating operation for separating the cell trays 214 and 214 from the seedling stands 210 and 210 can be performed for each seedling supplying means 200 and 200. [ At this time, the setting operation and the separation operation of the cell trays 214 and 214 can be performed appropriately for each of the seedling supplying means 200 and 200, so that these operations can be performed easily and easily.
The paper feed clutches 300 and 301 are provided on the paper feed drive shaft 213 coaxially and interlockingly connected to the paper feed mechanisms 211 and 211 of the seedling feeding means 200 and 200 so that the paper feed clutches 300 and 301 are cut The paper feeding mechanisms 211 and 211 of the seedling feeding means 200 and 200 can be manually operated. That is, the paper feeding mechanisms 211 and 211 can also be manually operated at the standing position (without moving) where the paper clutches 300 and 301 are operated. Therefore, the setting operation and the separation operation of the cell trays 214 and 214 can be carried out conveniently and conveniently in each of the seedling supplying means 200 and 200.
The paper feed clutches 300 and 301 are cut off and the paper feed mechanisms 211 and 211 of the seedling feeding means 200 and 200 are manually operated while the paper feed clutches 300 and 301 are being operated. The position can be easily adjusted. At this time, it is possible to perform the manual operation of the paper feed clutches 300 and 301, the manual operation of the paper feed mechanisms 211 and 211, and the paper feed position adjustment operation without changing the standing position with respect to one seedling feeding means 200.
The left sprocket support shaft 314 and the left shaft 313 are engaged with each other by cutting the paper clutch 300 of the other side (left side in this embodiment) interposed between the left sprocket support shaft 314 and the left shaft 313. [ And the left paper feed mechanism 211 interlocked with the left sprocket support shaft 314 can be manually and comfortably operated. Therefore, the setting operation and the separation operation of the cell tray 214 in the left seedling feeding means 200 can be carried out easily and conveniently.
The left sprocket support shaft 314 and the left shaft 313 are connected and disconnected by engaging and disengaging the left paper clutch 300 only at a certain angle with either the left sprocket support shaft 314 or the left shaft 313. [ . Herein, the predetermined angle is an angle that can maintain the relative positional relationship between the cell tray 214 and the seedling draw-out claws 410 and 410 that draw cell seedlings from the cell tray 214, It is possible to prevent the relative positional relationship of the first and second contact portions 410 and 410 from being shifted.
When the left sprocket support shaft 314 and the left shaft 313 are cut by the paper clutch 300 of the left side, the paper clutch 300 is set in the cut state, The user can take his or her hand off. Therefore, the paper feeding mechanism 211 can be manually operated in a comfortable posture to surely perform the setting operation and the separating operation of the cell tray.
As shown in Fig. 21, a transverse shaft 700 extending laterally and laterally is provided as an input shaft of the implanted portion 3 on the lower front side of the frame body 120. As shown in Fig. The transmission shaft 700 is provided with a power acquisition section 710 that receives power from the PTO shaft 930 of the traveling section 1 and a power storage section 710 that is disposed in the left and right rooms of the power acquisition section 710, And an engaging clutch unit 730 disposed on the left side of the grafting unit 390 on the left side to connect and disconnect power to the seedling feeding means 200 and 200 and the seedling pulling means 400 and 400. [ .
The left end of the seedling withdrawing means transmission shaft 760 is linked to the left end of the transmission shaft 700 by a first transmission chain 943 via first and second sprockets 941 and 942. The seedling draw-out means transmission shaft 760 extends in the left-right direction and extends transversely behind the rear end of the unit base frame 380 on the left side so as to be able to adjust the gravity of the grafting units 390, have. An intermediate shaft 944 is disposed in the vicinity of the seedling drawing means transmission shaft 760 and one end of the intermediate shaft 944 is linked to the first transmission chain 943 through the third sprocket 945, And the other end of the intermediate shaft 944 and the input shaft 940 protruding from the transmission gear case 121 to the right side are connected by a second electric chain 948 via fourth and fifth sprockets 946, . The proximal end portion and the proximal end portion of the input shaft 940 are connected to the proximal end portion of the transverse feeding shaft 125 through a gear transmission mechanism 154 and the proximal end portion of the paper feeding shaft 123 is connected through a gear group 155 .
The unit base frame 380 is attached to the front portion of the frame body 120 through unit stays 391 and 391 that are adjustably adjustable in the left and right directions . That is, as shown in Figs. 22 and 23, the unit base frame 380 has a pair of left and right extending pieces 381 and 382 and a pair of right and left extending pieces 383 extending transversely between the rear ends of the front and rear extending pieces 381 and 382 The front end portions of the front and rear extending pieces 381 and 382 are pivotally connected to the front end portions of the unit stays 391 and 391 protruding upward in the charge chamber so as to be rotatable in the left and right direction, have. The seedling pulling means 400 is provided on the left and right extending portions 381 and the feeding means 500 is provided on the right and left extending portions 382 to form the grafting unit 390.
The seedling drawing means 400 includes a pair of left and right seedling drawing claws 410 and 410 and a seedling drawing operating mechanism 420 for gripping and operating both seedling drawing claws 410 and 410. The eating tool 500 is provided with a pair of food claws 510 and 510 on the front and rear sides, and a food operating mechanism 520 for opening and closing the food claws 510 and 510. The seedling drawing operating mechanism 420 and the food operating mechanism 520 are disposed between the two claws 410 and 510 so that the seedling drawing claws 410 and the food claws 510 are arranged close to each other in the vertical direction, .
As shown in Figs. 22 and 23, the eating tool 500 is provided with an input portion 740 at the rear portion of the right front and rear extending portion 382. 21, an output shaft 721 projecting rearward from the output section 720 and an input shaft 741 projecting forward from the input section 740 are provided so as to be able to be bent to the center, And a retractable electric shaft 750 is interposed.
Then, the food operating mechanism 520 is connected to the left end of the input unit 740 in an interlocked manner. That is, the input shaft 740 is provided with an output shaft 742 extending in the leftward direction and a proximal end portion of the input shaft 741 interlockingly connected to the middle portion of the output shaft 742. And a food operating mechanism 520 is operatively connected to the left end of the output shaft 742. The sixth and seventh sprockets 767 and 768 are provided between the output drive shaft 766 linked to the seedling draw-out operation mechanism 420 and the middle portion of the seedling draw-out means transmission shaft 760 extending in the left- The electric chain 769 is wound.
The power from the traveling unit 1 can be transmitted through the transmission shaft 700 in a shape (in parallel) divided into the feeding unit 500 and the seedling feeding unit 200 and the seedling feeding unit 400 And can be transmitted in a shape (in parallel) divided into the seedling feeding means 200 and the seedling feeding means 400 through the transmission gear case 121. [
The seedling drawing operation mechanism 420 is connected to the output drive shaft 766 protruding to the left side room through the seedling drawer rotary case 440, the seedling drawing crank arm 450, the opening and closing cam 460 and the seedling drawer arm 470. And a pair of seedling drawing claws 410 are linked together. Reference numeral 480 denotes an arm guide body having a guide hole, and the seedling takeout guide roller 490 provided on the seedling arm 470 is slidably inserted into the guide hole.
With this configuration, the seedling drawing operating mechanism 420 is configured to perform the seedling drawing operation as described below. That is, the seedling draw-out arm 470 is linked to the rotation operation of the seedling draw-out rotary case 440 interlocked with the output drive shaft 766 and the seedling draw-out crank arm 450, And moves to the seedling drawing position where the seedling of the seedling tray is pulled out along the guide hole of the guide member 480. The front end of the pair of seedling drawing claws 410 is inserted into the cell seedling and the opening and closing cam 460 is brought into a nipped (closed) state in which the front ends of the pair of right and left seedling drawing claws 410 are brought close to each other Cell seedlings are extracted. Subsequently, the seedling draw-out arm 470 is moved along the guide hole of the arm guide body 480 to the take-over claw side take-up position of the seedling claw 510, which is the upper right position. Then, the tip ends of the pair of left and right seedlings draw-out claws 410 are separated from each other by the opening / closing cam 460 to release the seedlings downward.
The food operating mechanism 520 is provided with a seedling rotary case 530, a seedling crank arm 540, an opening and closing cam body 550, and an opening and closing cam body 550 at the left end of an output shaft 742 protruded from the left end of the input unit 740 And a pair of front and rear food claws 510 are interconnected through a seedling type food arm 560. Reference numeral 570 denotes an elevating guide member having guide grooves extending in the vertical direction and slidably engaging with a guide rail 580 provided on the seedling-type support arm 560 in the guide groove.
The elevating guide body 570 is disposed on the opposite side of the food clogs 510 from the seedling feeding means 200. As shown in Fig. 22, the opening portions 561, 562, and 563 are opened at the front end portion and the base end portion of the seedling type food arm 560 to make it as light as possible.
A connecting link mechanism 591 is interposed between the left and right extended portions 383 of the unit base frame 380 and the urging biasing force adjusting means 590 provided at the rear portion of the frame body 120. [ A damper 594 extending in the vertical direction is provided between the link supporting shaft 592 provided on the connecting link mechanism 591 and the pressing biasing force adjusting case 593 provided on the rear portion of the frame 120 And a pressing biasing force adjusting means 590 is provided in the pressing biasing force adjusting case 593. The damper 594 functions to restrain the rear portion of the unit base frame 380 from being pushed upward. The pressing biasing force adjusting means 590 adjusts the urging force to urge the left and right extending pieces 383 downward And the like.
The pressing biasing force adjusting means 590 includes a unit pressing spring 596 having one end connected to the connecting link mechanism 591 and a lever 597 connected to the other end of the unit pressing spring 596 to adjust the pressing force, And an adjusting engagement guide groove 598 formed on the side wall of the pushing biasing force adjusting case 593 so as to engage with the middle portion of the lever 597 to be adjusted.
With this configuration, the food operating mechanism 520 is configured to perform the following seedling operation. That is, the seedling-type arm 560 is interlocked with the rotation operation of the seedling-type rotary case 530 and the seedling-type crank arm 540 interlocked with the output shaft 742, and the seedling- So as to follow the guide groove of the sieve body 570 and move up to the take-up position of the food claw side which is the take-over position of the cell seedlings.
At this time, the food claw 510 is joined (closed) by a pair of front and rear food claws 510, 510 by the opening and closing cam body 550, and cell seedlings are received in the food claw 510 whose upper surface is opened. Subsequently, the seedling type arm 560 is moved down along the guide groove of the elevation guide body 570 to the food portion in the packed soil. Then, the pair of food claws 510, 510 are separated from each other by the opening / closing cam body 550 to open (open) state, and the cell seedlings are discharged into the packed soil. Thereafter, the pair of food claws 510, 510 move back to the initial position and return to the joined state.
In addition, the seedling drawing claws 410 and the food claws 510 are arranged close to each other in the vertical direction. In addition, the seedling drawing operation mechanism 420 and the food portion operating mechanism 520 are disposed in the left and right The seedling claws 410 and the food claws 510 can be disposed as close as possible to each other and the cell seedling from the seedling claws 410 to the food claws 510 can be reliably transmitted.
As shown in Figs. 24 and 25, the elevation sensor rollers 820 and 820 are respectively connected to the elevation control mechanisms 810 and 810 connected to the elevation control levers 800 and 800, respectively, below the seedling feeding means 200 and 200 on the left and right sides and the grafting units 390 and 390, And complementary wheels 830 and 830 are provided.
The base portion of the elevation control lever 800 is pivoted at the front portion of the frame body 120 and the elevation sensor roller 820 and the elevation sensor wheel 820 are connected to the base portion of the elevation control lever 800 through the elevation control mechanism 810. [ (Not shown). The lifting and lowering adjustment mechanism 810 is constructed such that an under bracket 811 is attached to the front portion of the frame body 120 and the pivot support 812 is swingably attached to the under bracket 811, The lower portion of the elevation control lever 800 is connected through the connection rod 813 extending in the direction of the axis of rotation 813 and the elevation sensor roller 820 is attached to the pivot support 812 through the roller support arm 814 And the covering wheel 830 is attached to the swing support body 812 through the interlocking mechanism 815. [ The interlocking mechanism 815 pivots the lever body 816 to the left and right intermediate portions of the unit base frame 380 and rotates the interlocking rod 817 extending in the forward and backward directions between the lever body 816 and the swing support 812. [ And the tail wheel 830 is attached to the lever body 816 through the tail wheel support frame 818. [
840 denotes a lifting and lowering guide body which can adjust the lifting and lowering position of the lifting sensor roller 820 and the covering wheel 830 by the lifting and lowering adjusting lever 800 through the lifting and lowering guide body 840, respectively. The elevating sensor roller 820 is operated to move up and down along the concavo-convex surface of the package, and a hydraulic valve (not shown) for switching the elevating operation and the hydraulic circuit to the elevating cylinder 183 is connected to the interlocking wire And the grafting depth can be kept constant by elevating and lowering the grafting unit 3 appropriately.
When at least one of the elevation sensor rollers 820 and 820 is moved upward, the transplanting section 3 is moved up and down. Since the elevation sensor roller 820 and the covering wheel 830 can be adjusted as a unitary slide position through the elevation adjustment mechanism 810 attached to the unit base frame 380, There is no need to adjust the wheels 820 and 830. The covering wheel 830 is arranged at a position immediately after the food claw 510 and is securely covered by the covering wheel 830 for the released cell seedling (seedling immediately after the implantation).
