JP6589376B2 - Transplanter - Google Patents

Description

  The present invention relates to a transplanter for planting seedlings, seed pods and the like in a cocoon, and belongs to the technical field of agricultural machinery.

  As described in Patent Document 1, a transplanted seedling grown on a tray in which a large number of seedling pots are integrally connected is taken out with a picking nail, supplied to a planting tool, and the transplanted seedling is automatically put on the field with a planting tool that moves up and down. There are transplanters that transplant continuously.

JP 2014-233220 A

  Since the transplanter is a supply operation for mounting a tray on which a large number of transplanted seedlings have been grown to the seedling supply unit, the transplanted seedling supply operation becomes easier and efficient transplantation can be performed. The root of the seedling extends from the bottom of the seedling pot and is entangled vertically and horizontally, and it is difficult for the extraction claw to pull out the transplanted seedling from the seedling pot.

  An object of the present invention is to make it possible to smoothly remove a transplanted seedling from a seedling pot and prevent the transplanting operation from stagnation with a transplanter using such a tray.

  The problems of the present invention are solved by the following technical means.

According to the first aspect of the present invention, a tray (20) in which a large number of seedling pots (21) are connected longitudinally and laterally on the surface side is placed on a seedling table (110) of a tray supply device (100) and a take-out device (200 In the transplanting machine that takes out the seedling (22) in the nursery pot (21) with the take-out claw (210) and supplies it to the planting tool (11) to perform the planting operation, the tray (110) on the seedling stand (110) ( 20) Seedlings (22) extending from the seedling pot (21) to the feed rod (221) that goes in and out of the pot-to-pot groove (D) of each seedling pot (21) from the bottom side of the seedling pot (21) and sends the tray (20) to the seedling extraction position ) Is provided with cutting blades (30, 31) for cutting the roots.

The invention according to claim 2 is characterized in that the cutting blades 30 and 31 are constituted by a horizontal cutting blade 30 orthogonal to the feeding direction of the tray 20 and a vertical cutting blade 31 intersecting the horizontal cutting blade 30. The transplanter according to Item 1 .

In the invention according to claim 1, the feed rod (221) that enters and exits the inter-pot groove (D) of each seedling pot (21) on the bottom side of the tray (20) sends the tray (20) to the seedling removal position. However, with the cutting blades (30, 31) provided on the feed rod (221) , the roots of the seedlings (22) extending from the seedling pots (21) are cut and the seedlings (22) are raised with the picking nails (210). Withdrawing from the pot (21) is ensured, and the transplanting operation continues well.

  In the invention according to claim 2, in addition to the effect of claim 1, all the roots of the seedling (22) extending from the bottom of the seedling pot (21) are cut, and the seedling (210) 22) is taken out more reliably.

Left side view of seedling transplanter Top view of seedling transplanter Left side view of seedling planting device and seedling planting device drive mechanism in seedling transplanter (A) Schematic left side view of seedling planting device drive mechanism, (b) Plan sectional development view of seedling planting device drive mechanism, (c) Partial front sectional view of seedling planting device drive mechanism Perspective view of transmission lever in seedling transplanter Schematic sectional view explaining the transmission gear mechanism of the transmission case Schematic side view showing the configuration of the tray vertical feed device (A) Partial enlarged side view of tray supply device, (b) Partial enlarged side view of feed rod Schematic perspective view of take-out device Schematic left side view of unloader The schematic diagram which shows the rough correspondence of the rotation position of the seedling drive arm and the position on the locus of the tip of the pair of extraction claws in the extraction device (A) Various operation levers arranged in the vicinity of a pair of left and right handle grips of the operation handle, and a plan view for explaining the operation unit, (b) Another embodiment of the main clutch lever Left side view showing schematic configuration of planting depth adjustment mechanism Schematic block diagram explaining input and output to the control unit The perspective view of the Example which provided the grounding roller of the surface detection Side view of pressing wheel support part of another embodiment (A) Side view of the pressure-reducing wheel support of another embodiment (b) Lock lever unlocked state (c) Lock lever locked state

  Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings. In this specification, the left and right directions in the forward direction of the transplanter are referred to as left and right, respectively, the forward direction is referred to as forward, and the reverse direction is referred to as rear.

  FIG. 1 shows a left side view of a seedling transplanter according to an embodiment of the present invention, and FIG. 2 shows a plan view.

  As shown in FIGS. 1 and 2, a seedling transplanter 1 for transplanting seedlings such as vegetables includes a traveling vehicle body 15 including a pair of left and right front wheels 2 and rear wheels 3 as traveling wheels, and a front portion of the traveling vehicle body 15. Planting tool for planting the engine 12 and the transmission case 4 (also referred to as a main transmission case) covered with the bonnet 109 and the seedling 22 (see FIG. 7) arranged at the rear part of the traveling vehicle body 15. The seedling planting apparatus 300 that moves up and down 11, the tray supply apparatus 100 that supplies the tray 20 containing the seedlings 22, and the seedling 22 is taken out from the seedling pot 21 of the tray 20 of the tray supply apparatus 100 and supplied to the planting tool 11. , A planting depth adjusting mechanism 700 (see FIG. 13) including a sensor plate 710 for keeping the seedling planting depth constant, a pressure reducing wheel 13, a steering handle 8, and a steering handle 8 And it is configured to include an operation section 600 or the like arranged in the center portion.

  FIG. 16 shows another embodiment of the support structure of the pressure-reducing wheel 13. The pressure-reducing wheel 13 is pivotally supported on a support arm 35 extending rearward from the first support portion 34 on the airframe side, and the second support portion 33 on the front side is supported. When the support arm 35 is connected by the support frame 36 and the link 38 supported forward, and the weight 37 placed on the support frame 36 is moved and adjusted forward and backward, the suppression pressure of the pressure reduction wheel 13 can be adjusted.

  In addition, when the pressure-reducing wheel 13 is formed in a cylindrical shape by winding a wire mesh, mud is difficult to adhere.

  Further, when the pressure-reducing wheel 13 is a triangular endless belt in a side view and the endless belt is wetted with water supplied from above, it does not slip even when traveling on a multi-film laid on a bag.

  In addition, when transplanting a multifilm-covered bag, if the wind from the blower is blown onto the multifilm at the front of the aircraft, water will blow from the multifilm, making it easier to drill a transplant hole.

  FIG. 17A is another embodiment showing the support structure of the pressure reducing wheel 13, and the front end of the support arm 52 is pivotally supported on the lower part of the main frame 17 by the front shaft 51, and the rear end of the support arm 52. Is suspended by a suspension rod 53 suspended from the rear shaft 54 of the main frame 17, and the pressure reducing wheel 13 is pivotally supported at the front and rear intermediate portions of the support arm 52. The suspension rod 53 can be changed by a compression spring 55 and an adjusting screw 56 to change the pressing pressure of the support arm 52. The suspension rod 53 is attached to the rear shaft 54 by a lock lever 57 and a link 58. When the lock lever 57 is placed sideways as shown in FIG. 5B, the suspension rod 53 can be moved up and down, as shown in FIG. When the rear portion of the lock lever 57 is lifted as described above, the vertical movement of the suspension rod 53 is locked, and the pressure reducing wheel 13 is in a pressure-reduced state.

  Returning to FIG. 1, the rotational power output from the engine 12 is branched by the transmission case 4, transmitted to the pair of left and right rear wheels 3 via the pair of left and right traveling transmission cases 9, and continuously variable from the rear wheel shaft 3 a to the belt. The device 205 is also configured to be transmitted to the planting transmission device 18 provided on the rear side of the mission case 4.

  That is, in the seedling transplanter 1 of the present embodiment, the belt continuously variable transmission 205 is driven by the power from the mission case 4 via the rear wheel shaft 3 in order to take out the seedling 22 from the seedling pot 21 and plant it in the groin of the field. Through the seedling planting device drive mechanism 400 attached to the planting transmission device 18 and transmitted to the takeout device 200 through the chain belt 202. 11 is transmitted.

  A part of the power transmitted from the transmission case 4 to the planting transmission device 18 is transmitted to a longitudinal feed drive shaft 151 (described later) via a longitudinal feed drive chain belt 181 as shown in FIG. Part of the power transmitted during the longitudinal feed drive is transmitted to a lead cam shaft 171 described later via the gear mechanism 182. The longitudinal feed drive chain belt 181 and the gear mechanism 182 are accommodated in a seedling feed transmission case 180.

  In addition, a main frame 17 extending rightward is provided at the rear of the left and right frames 16 disposed in the left and right direction at the rear end of the mission case 4. A steering handle 8 extending rearward from the left and right ends is provided at the rear end of the main frame 17, and the steering handle 8 is supported by the transmission case 4 via the main frame 17 and the left and right frames 16. Yes.

  Thus, the operator can perform a steering operation of the traveling vehicle body 15 with the steering handle 8 while walking behind the traveling vehicle body 15.

  That is, the seedling transplanter 1 according to the present embodiment is accommodated in the tray 20 while the traveling vehicle body 15 is advanced with the pair of left and right front wheels 2 and 2 and the pair of left and right rear wheels 3 and 3 straddling the heel U. It is the structure which can be planted automatically on the upper surface of the ridge U.

  Further, as shown in FIG. 1, a shift lever 190 is provided on the left side of the base portion of the left steering handle 8 for switching the traveling speed when performing the planting work and switching the traveling mode.

  The traveling unit is provided with an airframe control mechanism 500 (see FIG. 1) that controls the posture and the vehicle height of the traveling vehicle body 15 by moving the pair of left and right rear wheels 3 and 3 up and down relative to the traveling vehicle body 15. Yes.

  The airframe control mechanism 500 includes a hydraulic lift cylinder 10 that lifts and lowers the traveling vehicle body 15 by raising and lowering the rear wheel 3 between the traveling transmission case 9 and the traveling vehicle body 15 of the pair of left and right rear wheels 3, and the traveling vehicle body 15. A horizontal hydraulic cylinder 14 to be tilted is provided. When the hydraulic lifting cylinder 10 is extended and contracted, the pair of left and right rear wheels 3 move up and down relative to the traveling vehicle body 15 in the same direction by the same amount. Goes up and down.

  The hydraulic lift cylinder 10 is fixedly provided to a hydraulic pressure switching valve portion 40 (see FIG. 1) attached to the upper part of the mission case 4 and switches hydraulic pressure to switch the hydraulic pressure from the hydraulic pump attached to the mission case 4. This is a configuration that operates by operating a lifting operation valve (not shown) provided in the valve unit 40.

  Note that a lift operation lever 81 (see FIG. 12A), which will be described later, is connected to the lift operation valve via a cable 82, and a counter arm 760 (see FIG. 13), which will be described later, is connected via a rod 765. Has been.

  Further, a pendulum type left / right tilt sensor 41 (see FIG. 1) is provided on the right side of the mission case 4, and a horizontal operation valve (not shown) provided in the hydraulic pressure switching valve unit 40 by the detection of the left / right tilt sensor 41. ), The horizontal hydraulic cylinder 14 is actuated, and only the left rear wheel 3 is moved up and down to maintain the traveling vehicle body 15 horizontally regardless of the unevenness of the troughs of the eaves U.

  Next, the seedling planting device 300 and the seedling planting device driving mechanism 400 described above will be further described with reference to FIGS. 3, 4A, 4B, and 4C.

  FIG. 3 is a left side view of the seedling planting device 300 and the seedling planting device driving mechanism 400. FIG. 4 is a schematic left side view of the seedling planting device drive mechanism 400.

  As shown in FIG. 3, the seedling planting apparatus 300 includes a planting tool 11 for planting the seedling 22 in a field, an upper arm 311 and a lower arm arranged in parallel with each other for swinging the planting tool 11 in the vertical direction. A swing link mechanism 310 having an arm 312 and a vertically moving arm 320 that is rotatably attached to the lower arm 312 via a first connecting shaft 321 and moves the swing link mechanism 310 up and down are provided. The first connecting shaft 321 is fixed to the vertical movement arm 320.

  In addition, the vertical movement arm drive shaft 440 for rotating the vertical movement arm 320 is provided so as to protrude from the seedling planting device drive mechanism 400, and the vertical movement arm 320 is fixed to the tip portion thereof.

  Further, as shown in FIG. 3, the seedling planting device 300 is pivotally attached to the lower arm 312 via the second connection shaft 341 and opens and closes the planting tool 11, and the first connection shaft 321. And is rotated around the second connecting shaft 341 while being in contact with the outer peripheral edge of an opening / closing roller 342 that is pivotably attached to the tip of the opening / closing arm 340 via the third connecting shaft 343. Thus, the opening / closing cam 322 that swings the opening / closing arm 340 in the front-rear direction, one end 351 is connected to the third connection shaft 343 at the tip of the opening / closing arm 340, and the other end 352 is the opening / closing mechanism of the planting tool 11. And an open / close connection cable 350 connected to the 11a side.

  Here, the swing link mechanism 310 described above will be further described.

  That is, as shown in FIG. 3, the swing link mechanism 310 is supported at the front upper end portion 401a of the casing 401 housing the seedling planting device drive mechanism 400 so that the upper end is rotatably supported by the upper front shaft 313a and the lower end is supported. A front swing arm 316a that is rotatably connected to a connection support plate 315 via a lower front shaft 314a, and a rear upper end portion 401b that houses a seedling planting device drive mechanism 400, an upper end is an upper rear portion. An upper shaft provided on the connection support plate 315, having a rear swing arm 316b supported rotatably on the shaft 313b and having a lower end rotatably connected to the connection support plate 315 via the lower rear shaft 314b. The front end of the upper arm 311 described above is rotatably connected to 316, and the front end of the lower arm 312 described above is rotatably connected to the lower rear shaft 314b of the connection support plate 315. , Each of the rear end portion of the arm 311 and lower arm 312 is pivotally connected to the rotating upper shaft 317a and the rotation under shaft 317b provided on the support plate 317 of the planting device 11.

  With the above configuration, when the rotational driving force is transmitted to the vertical movement arm drive shaft 440 in the seedling planting device drive mechanism 400, the vertical movement arm 320 fixed to the vertical movement arm drive shaft 440 rotates in the direction of arrow A. By moving, the lower arm 312 and the upper arm 311 repeatedly swing up and down and swing back and forth, so that the planting operation of the seedling 22 by the planting tool 11 is performed with respect to the ridge U. Automatically done at intervals.

  Further, when the vertical movement arm 320 to which the first connection shaft 321 is fixed rotates in the direction of arrow A during the planting operation, the opening / closing cam 322 fixed to the first connection shaft 321 becomes the opening / closing roller. Since it rotates while contacting the outer peripheral edge of 342, the open / close arm 340 swings (rotates) forward (counterclockwise) about the second connecting shaft 341. Along with this operation, one end 351 of the open / close connection cable 350 is pulled in the forward direction, so that the open / close mechanism 11a operates to open the planting tool 11.

  Further, when the open / close arm 340 swings (rotates) backward (clockwise) about the second connecting shaft 341, the planting tool 11 provided in the open / close mechanism 11a is always biased in the closing direction. The one end 351 of the opening / closing connection cable 350 is pulled rearward by the action of a spring (not shown), so that the opening / closing mechanism 11 a operates to close the planting tool 11.

  With the above configuration, since the vertical movement arm 320 is driven by one axis, the structure is simple, and the vertical movement arm 320, the opening / closing arm 340, and the opening / closing cam 322 can be configured compactly, and the planting operation can be performed smoothly.

  Next, the clutch mechanism for turning on and off the transmission to the vertical movement arm drive shaft 440 in the seedling planting device drive mechanism 400 arranged on the right side of the seedling planting device 300 (see FIG. 2) in plan view is mainly shown in FIG. This will be further described using.

  As shown in FIG. 4, the seedling planting device drive mechanism 400 includes a first gear 410 and a first gear 410 for transmitting the planting driving force output from the planting transmission device 18 to the planting clutch 420. When the planting clutch 420 and the planting clutch 420 are in the “ON” state, the transmission to the vertical movement arm drive shaft 440 is switched to the “ON” state or “OFF” state. A second gear 430 receiving a driving force from a transmission gear 421a fixed to the transmission shaft 421 of the planting clutch 420, and a small-diameter gear 430a fixed coaxially with the second gear 430. The third gear 450 fixed to the vertical movement arm drive shaft 440 is rotatably arranged so as to be engaged with the vertical movement arm drive shaft 440. Here, when the planting clutch 420 is in the “disengaged” state, the transmission shaft 421 of the planting clutch 420 stops without rotating and does not transmit the driving force to the second gear 430. The rotation of the sensor disk 414 that rotates together with the transmission shaft 421 is detected by the planting timing sensor 415, and the driving of the planting clutch 420 is input to the control unit 800.

  A plurality of clutch claws of the planting clutch 420 are provided at an equal pitch, and the planting clutch 420 is decelerated and transmitted from the planting clutch 420 to the shaft 440. Assuming that the number of clutch pawls of equal pitch is A and the reduction ratio Z, (A ÷ Z) is set to the least common multiple between planted stocks switched by the traveling transmission.

  With this configuration, fine adjustments can be made, so that the degree of freedom in setting between planted stocks is improved, and the same planted plant can be set even when the traveling transmission is switched.

  A rotating plate that rotates integrally with the drive side clutch body of the planting clutch 420 is provided, and a plurality of irregularities are provided on the outer periphery of the rotating plate in accordance with the phase of the clutch pawl of the planting clutch. When detected, the solenoid 470 is operated to turn on the planting clutch 420 and the operation of the planting tool 11 is started.

  With this configuration, the planting clutch 420 can be turned on at a phase in which the clutch claws of the driving clutch body and the driven clutch body of the planting clutch 420 immediately match each other, so that the planting stock is accurate. Moreover, since the plurality of projections and depressions are provided in accordance with the phase of the clutch pawl, fine adjustment can be performed and the degree of freedom in setting between planting stocks is improved.

  In addition, you may use the conventional fixed position stop clutch as the planting clutch 420 of this Embodiment.

Further, as shown in FIG. 4, the seedling planting device drive mechanism 400 is provided on the transmission downstream side of the planting clutch 420 and is fixed to the vertical movement arm drive shaft 440.
An intermittent cam 441 having a recess 441a formed in a part of a circular outer peripheral edge for forcibly switching from an “on” state to a “cut” state, and one end portion 460a is separated from the planting clutch 420 or Depending on whether or not they are in contact, the planting clutch 420 is switched between an engaged state and a disengaged state. An arm 460 and a second arm 462 are provided.

Further, as shown in FIG. 4, the seedling planting device drive mechanism 400 sucks the other end 460 b of the first arm 460 in the direction of arrow B through the movable plate 472 against the pulling force of the tension spring 480. Thus, the one end portion 460a of the first arm 460 is centered on the rotation fulcrum 461.
Is rotated in the direction of arrow C, and the solenoid 470 is operated to switch the planting clutch 420 from the “disengaged” state to the “entered” state, and the suction force of the solenoid 470 is in the “entered” state of the planting clutch 420. In order to effectively act on the switching operation, the mounting position of the solenoid 470 that can be adjusted is provided with a mounting adjustment long hole 471a, a solenoid fixing plate 471 fixed at a lower position of the casing 401, and a first One end 462a is fixed to the pivot fulcrum 461 of the arm 460, and the other end 462b is in contact with the outer peripheral edge of the intermittent cam 441 in conjunction with the operation of the first arm 460. Yes.

  Further, the above-described tension spring 480 presses the first arm 460 in the direction in which the planting clutch 420 is in the “disengaged” state and the other end 462b of the second arm 462 against the outer peripheral edge of the intermittent cam 441. A spring for biasing in the direction.

  A preliminary seedling table 115 is supported on a frame constituting a transmission mechanism from the planting transmission device 18 to the take-out device 200.

  Next, the shift lever 190 described above will be further described with reference to FIGS.

  FIG. 5 is a perspective view of the transmission lever 190, and FIG. 6 is a schematic sectional view for explaining the transmission gear mechanism of the transmission case 4. As shown in FIG.

  As shown in FIG. 5, the shift lever 190 switches the three travel modes of “forward” travel, “neutral (stop)”, and “reverse” travel, and sets the travel speed when performing planting work to be low. It is a lever for switching between “planting 1” and “planting 2” for setting the traveling speed high, and is configured to be manually rotated by the operator.

  Further, the front end portion of the transmission lever 190, that is, the transmission lever end portion 191 on the opposite side of the knob 192, which is a portion gripped by an operator, is connected to one end of the transmission gear mechanism of the transmission case 4.

  The transmission gear mechanism has a pair of large and small gears 194 that are slidably held on a shaft 193 and is slidably arranged in parallel with the shaft 193. One end side 196a projects out of the transmission case 4, and the other end side 5 through holes 196b are formed, and a bar-shaped shift shifter 196, on which a gear shift plate 195 for sliding the pair of large and small gears 194 is fixed, is pressed by a spring 196c to the opening of the through hole 196b. The one end side 196a of the shift shifter 196 is configured so that the shift shifter 196 can be shifted in the axial direction in conjunction with the turning operation of the shift lever 190. A connecting plate 19 fixed to the shift lever end 191 and protruding in a direction perpendicular to the rotation axis of the shift lever end 191. It is connected to the tip portion 197a.

  In addition, a protrusion 197 b is formed at the root of the connecting plate 197. Then, in order to detect the switching of the traveling speed when performing the planting work by the shift lever 190, the switch movable plates 198a of the first shift switch 198 and the second shift switch 199 disposed in the vicinity of the projection 197b. 199a can be pressed or not pressed according to the rotation position of the shift lever 190.

  That is, when the shift lever 190 is switched to “planting 1” in which the planting operation is performed at a low traveling speed, the first shift switch 198 is turned on and the second shift switch 199 is turned off.

  On the other hand, when the shift lever 190 is switched to “planting 2” in which the planting operation is performed at a high traveling speed, the first shift switch 198 is turned off and the second shift switch 199 is turned on.

  When the shift lever 190 is switched to the “neutral (stop)” mode position, the first shift switch 198 is turned off and the second shift switch 199 is turned on.

  Further, regardless of whether the shift lever 190 is set to the “forward” mode or the “reverse” mode, the first shift switch 198 is OFF and the second shift switch 199 is OFF.

  In any case, since the ON information or OFF information is sent from each switch to the control unit 800, the control unit 800 determines whether “planting 1” is set by the shift lever 190 or “planting”. It can be determined whether “Appendix 2” is set or “Neutral (stop)” mode is set (see FIG. 14).

  In the present embodiment, when the shift lever 190 is set to the “neutral (stop)” mode, the controller 800 is configured to determine that when the traveling vehicle body 15 has stopped traveling, An energization command is issued from the control unit 800 to the solenoid 470 so that the planting clutch 420 is in the “on” state, the planting tool 11 can be operated, and transmission of the planting tool 11 can be confirmed in the neutral mode. Demonstrate the effect.

  In addition, utilization of the determination result by the control unit 800 for control between planted stocks will be described later.

  Further, the positions of the connecting plate 197 and the pair of large and small gears 194 shown in FIG. 6 are set when the transmission lever 190 is set in the “forward” traveling mode and in the “reverse” traveling mode. In both cases, each is drawn with a solid line.

  With the above configuration, the shift lever 190 is set in any of the five modes from “forward” to “neutral”, “planting 1”, “planting 2”, and “reverse” shown in FIG. Accordingly, the shift shifter 196 is slid in the axial direction, so that the pair of large and small gears 194 are slid to change the gear (not shown) to be connected.

  Next, the tray supply device will be described. As shown in FIG. 7, a perspective side view of the internal configuration of the tray supply device 100 includes a seedling table 110 for placing and guiding the tray 20 integrally formed with a group of aligned pots, and a seedling table 110. An outer guide 213 for bending the received tray 20 downward and guiding it to the lower side of the seedling table 110, a tray receiver 214 for accommodating the tray 20 discharged from the outer guide 213, and the outer guide 213 The tray 20 is configured to include a feeding tool 215 that feeds and moves the tray 20 by a predetermined distance from the back surface side thereof, and a check roller 216 that can rotate around the feeding tool 215.

  The check roller 216 is configured such that the tray supply device 100 supported by the lateral movement shaft 105 so as to be movable in the left-right direction can act on the feeder 215 at a position where the tray supply device 100 reaches the left-right end position.

  As shown in FIG. 8, an enlarged side view of the main part of the feeder 215 includes a feed rod 221 that can be engaged with a groove D between the pots on the back side of the tray 20, and supports the feed rod 221 in a swingable manner. A feed arm 222 and a relay link 223 connected to the feed rod 221 are provided.

  The feed rod 221 is bent in a U-shape, and has a forward end portion 221a extending in a straight line that can enter the groove D between the pots on the back side of the tray 20 at the front end portion. A shaft 221b is provided to support the distal end portion of the feed arm 222, and a proximal end arm 221c is provided so as to be swingably connected to the relay link 223, whereby an entry portion 221a with respect to the inter-pot groove D of the tray 20 is provided. Is configured to be able to advance and retreat. The support shaft 221b is provided with a torque spring 224 as an urging tool for entry, and the entry portion 221a is urged in a direction to enter the inter-pot groove portion D of the tray 20 without crushing the tray. Further, if necessary, a lever 225 for forcibly retracting the entry portion 221a from the inter-pot groove portion D is provided on the feed rod 221. The entry portion 221a is provided across the left and right width of the tray 20.

  The feed arm 222 is provided with a support shaft 222a at the base end portion, and is pivotally supported within the feed operation range of the feed rod 221 at the distal end portion. In addition, the feed arm 221 is a stepping control cam that performs a backward operation from the feed position. 222b is provided. This step control cam 222b is formed so that the feed rod 221 can go backward in the range exceeding the length of the seedling pot 21 of the tray 20 under the action of the check roller 216. In addition, the feed arm 222 is provided with a spring 226 as a feed urging tool to urge it in the feed direction of the feed rod 221 and to adjust the feed position of the seedling pot 21 immediately above the entry portion 221a to the take-out position. A stopper 227 for setting the limit position of the feeding operation is provided.

  The relay link 223 is swingably connected to the proximal end arm 221c of the feed rod 221 by a long hole connecting portion 223a formed at the distal end, and the proximal end is pivotally supported on the support shaft 222a of the feed arm 222. In addition, an engagement control cam 223b that swings the feed rod 221 to retract the entry portion 221a from the tray 20 is provided. The engagement control cam 223b is formed such that the entry portion 221a can be retracted from the inter-pot groove D in accordance with the action of the check roller 216.

  The reciprocal relationship between the step control cam 222b of the feed arm 222 and the engagement control cam 223b of the relay link 223 is determined by the engagement control cam 223b via the relay link 223 so that the entry portion 221a is straightly removed from the inter-pot groove D. While the retracting portion 221a of the feed rod 221 is retracted from the inter-pot groove portion D, the feed arm 222 is slightly moved backward by the step control cam 222b, and further, the entry portion 221a is moved to the adjacent seedling pot 211. Thus, the outer shapes of both cams are configured so that the check roller 216 acts.

  As shown in FIG. 8 (b), a horizontal cutting blade 30 is provided outside the entry portion 221 a that enters the inter-pot groove D of the feed rod 221, and the horizontal groove of each seedling pot 21 is orthogonal to the horizontal cutting blade 30. A large number of vertical cutting blades 31 entering the portion are provided, and when the entry portion 221a enters the inter-pot groove portion D, fine roots that are stretched from the seedling pots 21 are separated.

  When using the tray 20 having a different lateral spacing of the seedling pot 21, the tray 20 is replaced with the feed rod 221 provided with the vertical cutting blade 31 according to the lateral pitch of the seedling pot 21.

  In addition, although illustration is abbreviate | omitted, it is also the structure which attaches the band iron which provided the vertical cutting blade 31 which approachs to the groove part D between each pot on the upper surface of the seedling stand 110, and can also cut | disconnect the fine root extended from the seedling pot 21 to the bottom part. I can do it.

  Although not shown, a seedling sensor for detecting the presence of the seedling 22 is provided by sandwiching the seedling pot 21 on the upper side of the seedling pot 21 from which the extraction claw 210 takes out the seedling 22 from the left and right, and a buzzer is buzzed to the operator. It is better to notify with a warning light.

  In addition, a roller is provided to press the seedling 22 of the seedling pot 21 on the upper side of the seedling pot 21 from which the extraction claw 210 takes out the seedling 22 with a sponge-like roller, and this roller comes down to the extraction position. If the seedling 22 is released and returned to its original position, the extraction claw 210 can prevent the extra seedling 22 from being removed.

  Next, the operation of the tray supply device 100 configured as described above will be described. In the tray supply device 100, the check roller 216 acts in common on the step control cam 222b of the feed arm 222 and the engagement control cam 223b of the relay link 223. Thus, while the engagement control cam 223b retracts the entry portion 221a of the feed rod 221 via the relay link 223 from the inter-pot groove portion D directly under the seedling pot 21 at the take-out position, the feed control arm 222b feeds the feed arm. 222 slightly reverses and the entry portion 221a goes straight out from the inter-pot groove D, and the entry portion 221a moves to the adjacent seedling pot 211 by the return operation of the feed arm 222 following this.

  Further, when the check roller 216 goes around and the engagement control cam 223b and the step control cam 222b are released, the entry portion 221a of the feed rod 221 from the back side of the tray 20 by the urging force of the torque spring 224 is adjacent to the seedling raising seedling. Adjacent seedling pots by pressing the pot 21 and then entering the inter-pot groove D immediately below the adjacent seedling pot 21 in the process in which the feed arm 222 swings to the restriction position of the stopper 227 by the biasing force of the spring 226 By positioning 21 at the take-out position, the tray 20 is moved by a distance corresponding to one pitch.

  When the tray 20 is moved and moved, the take-out device 200 is operated to take out the transplant. In this take-out operation, the take-out claw 210 acts on the lower half position of the seedling pot 21 from the surface side of the tray 20 while avoiding the main axis of the transplanted strain. By positioning with the entry portion 221a, the operation point of the extraction claw 210 can be aligned with high accuracy. In addition, by operating the take-out device 200 with the entry portion 221a engaged with the inter-pot groove D, the tray 20 is restrained by the entry portion 221a, so that the transplant from the seedling pot 21 can be performed without causing positional displacement. The stock can be taken out.

  With respect to the operation timing of the take-out device 200, the rotation speed of the check roller 216 is set to be ½ or less of the operation speed of the take-out device 200, so that the feeding operation time of the tray 20 is less than 180 degrees. Since it becomes shorter than the take-out cycle, even if there is an error in the timing at which the check roller 216 acts on the feeder 215 at the left and right end positions where the horizontal movement speed by the horizontal movement shaft 105 becomes small, the take-out operation from the tray 20 By this, the tray 20 can be reliably fed, and the take-out device 200 passes the transplant to the planting device 5 so that the transplant is planted in the field.

  Thus, the tray supply device 100 includes the feeding tool 215 that engages with the groove portion D between the pots formed on the back side of the tray 20 and feeds it to a predetermined position. The transplanted strain is sequentially taken out from the apparatus 100 and delivered to the planting apparatus 5 to plant the transplanted strain. At this time, the feeding tool 215 of the tray supply apparatus 100 is engaged with the groove D between the pots on the back surface of the tray 20. Therefore, the feeding accuracy is ensured by tray feeding in a pot unit, and the transplanted strain can be reliably taken out and delivered to the planting device 5 by the take-out device 200 in a fixed arrangement.

  Next, the configuration of the extraction device 200 provided in the seedling transplanting apparatus 1 of the present embodiment will be mainly described with reference to FIGS. 9 and 10.

  FIG. 9 is a schematic perspective view of the take-out device 200, and FIGS. 10 and 11 are schematic side views of the take-out device 200 as seen from the upper left back side of the paper surface of FIG.

  As shown in FIGS. 9 and 10, the take-out device 200 is rotatably held by a take-out device fixing member 201 fixed to the main body of the seedling transplanter 1, and the main body side drive source is connected via a chain belt 202. A drive arm 220 that is rotated in the same direction by a drive shaft 203 that is rotated in the direction of arrow B by power, a connecting arm 230 in which one end portion 230a is rotatably connected to a distal end side portion 220a of the drive arm 220; A plate-like member that is held on the take-out device fixing member 201 by fixing pins 201a and 201b and has an outer shape of an approximately J letter, and the side closer to the tray supply device 100 is straight and the far side is substantially R-shaped. And a guide portion 240 having a guide groove 241 that has a shape rising up.

  Further, the take-out device 200 includes a first guided member 245 that is integrated with a cam shaft 271 to be described later and inserted into the guide groove 241 so as to be smoothly slidable without shaking. The substrate 250 is connected to the member 247, protrudes from one end of the side surface to which the guided members are connected, and is bent at a substantially right angle, and the substrate 250 protrudes perpendicularly from the bent portion 251 of the substrate 250. A pair of left and right extraction claw holding pins 252L and 252R, which are movably held, and a root portion are attached to a pair of left and right extraction claw holding pins 252L and 252R, respectively, and the width of the tip portion is narrowed into a tweezers. 21 and a pair of extraction claws 261L, 261R for taking out the seedling 22 in the 21 and a base portion side of the inner surface portion of the pair of extraction claws 261L, 261R facing each other. A take-out member 260 and a spring 263 pulling the opposite ends is mounted, and a.

  Further, the take-out device 200 is a cam 270 having a cam shaft 271 integrated with the first guided member 254, which is pivotably penetrated through the substrate 250, and is related to the thickness of the outer peripheral portion of the cam 270. The outer peripheral portion 272 whose thickness varies depending on the location of the outer peripheral portion when contacting the front end surfaces of the pair of left and right claw tip width regulating projections 262L, 262R provided on the inner surface portions of the pair of extraction claws 261L, 261R. And a cam having an outermost edge portion 273 whose outer diameter varies depending on the position of the outermost edge portion with respect to the distance (also referred to as an outer diameter) of the outermost edge portion of the cam 270 from the axis center of the cam shaft 271 270 and a substrate 250 that are pivotally connected to each other, and are removed from the seedling pot 21 along the pair of extraction claws 261L and 261R by a change in the outer diameter of the outermost edge 273 of the cam 270. Extraction pawl 261L, and a, a pushing mechanism 280 for pushing the seedlings 22 held by 261R.

  Further, the edge portion 245 a near the tip of the first guided member 245 that is integral with the cam shaft 271 is rotatably connected to the other end 230 b of the connecting arm 230. Further, the first guided member 245 that is integral with the cam shaft 271 is transmitted via a transmission mechanism 290 including a first gear 291, a second gear 292, and a third gear 293 by the rotational force of the drive arm 220. The driving force is transmitted to the cam shaft 271 in accordance with the driving cycle of the driving arm 220 by being rotated.

  Further, when the outer peripheral portion 272 of the cam 270 comes into contact with the front end surfaces of the pair of left and right claw tip width regulating protrusions 262L and 262R provided on the inner surface side of the pair of extraction claws 261L and 261R, the outer peripheral portion 272 of the cam 270 The pair of extraction claws 261L and 261R is opened and closed by the interaction between the change in thickness and the restoring force of the tension spring 263.

  Next, the transmission mechanism 290 will be further described.

  That is, the first gear 291 is fixed to the distal end side portion 220a of the drive arm 220, and is rotatably attached to the connection arm 230 via the first rotation shaft 291a. Further, the third gear 293 is fixed to the tip end portion 245 b of the first guided member 245 that is integral with the cam shaft 271, and the edge portion 245 a near the tip end of the first guided member 245 is connected to the connecting arm 230. Therefore, the third gear 293 is rotatably held with respect to the connecting arm 230. Therefore, the third gear 293 rotates integrally with the first guided member 245. Further, the second gear 292 is rotatably attached at the center position of the connecting arm 230, and is sandwiched between both the first gear 291 and the third gear 293, and is engaged with both gears.

  Next, the extrusion mechanism 280 will be further described mainly with reference to FIG.

  The extruding mechanism 280 pushes out the seedling 22 held by the pair of extraction claws 261L, 261R. The tip portion 281a is bent at a right angle to form a notch 281b that matches the width of the tip portion of the extraction claws 261L, 261R. An extrusion rod 281 and a connecting rod 282 bent at a substantially right angle, one end portion 282a of which is rotatably inserted into a rear end hole portion 281c provided at the rear end portion of the extrusion rod 281. The connecting rod 282 held by a pull-out preventing pin (not shown), the other tip 282b of the connecting rod 282 are fixed to the upper end 283a, and the lower end 283b is fixed to the substrate 250 by the push arm connecting shaft 283d. A push-out arm 283 that is pivotally attached and provided with a tension spring holding first projection 283c in the center, and one end of the tension spring holding first projection. Hooked to 83c, the other end is provided with a spring 284 pulling the push-out arm hooked to the second projection 250a for the tension spring held fixed to the substrate 250.

  Then, when the cam 270 rotates in the direction of arrow B, the protruding portion 273b having an outer diameter larger than that of the other portion 273a in the outermost edge portion 273 is the outer peripheral edge portion of the root portion of the first projection 283c for holding the tension spring. , The pushing arm tension spring 284 is extended, and the pushing arm 283 is rotated counterclockwise in FIG. 10 so that the pushing rod 281 connected by the connecting rod 282 moves backward. Yes (see arrow C).

  Further, when the cam 270 rotates in the direction of arrow B, the other portion 273a having an outer diameter smaller than the protruding portion 273b in the outermost edge portion 273 is the outer peripheral edge portion of the root portion of the first projection 283c for holding the tension spring. , The push-out arm tension spring 284 contracts, and the push-out arm 283 is rotated clockwise in FIG. 10 so that the push-out rod 281 connected by the connecting rod 282 protrudes (arrow). D). Each time the push rod 281 protrudes, the tip of the pair of extraction claws 261L and 261R passes through the notch 281b provided in the tip 281a of the push rod 281. It is a configuration that removes the soil that had been removed.

  Here, although the extrusion rod 281 has a flat upper portion, it can prevent the leaves of the seedling 22 from being entangled with the pair of extraction claws 261L and 261R.

  Next, the operation of the take-out device 200 in the above configuration will be described with reference to FIGS.

  As described above, the guide portion 240 does not move because it is firmly fixed to the extraction device fixing member 201 fixed to the main body of the seedling transplanter 1.

  As the drive arm 220 rotates, the connecting arm 230 swings. The movement of the connecting arm 230 passes through the guide groove 241 formed in the guide portion 240 and is connected to the substrate 250. Regulated by H.245.

  On the other hand, the substrate 250 also swings with the movement of the connecting arm 230. In addition to the first guided member 245, the substrate 250 has a second guided member 247 penetrating through the guide groove 241. Since the second guided member 247 is not connected to the connecting arm 230, the movement repeats reciprocating movement along the guide groove 241. Since the extraction member 260 is attached to the substrate 250, the extraction member 260 also moves in the same manner as the substrate 250, and the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R are shown in FIGS. Draw a trajectory K.

Here, FIG. 11 is a schematic diagram showing an approximate correspondence relationship between the rotation position of the drive arm 220 and the positions on the locus K of the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R. The rotation positions P1 to P6 of the drive arm 220 shown in FIG. 11 correspond to positions K1 to K6 on the locus K of the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R.
In addition, the arrow described on the broken line which shows the locus | trajectory K has shown the operation | movement direction.

  As shown in FIG. 11, the operation of the tip portions 261Lp, 261Rp of the pair of extraction claws 261L, 261R from the position K1 to the position K2 corresponds to the operation of extracting the seedling 22 from the seedling pot 21. Since the locus K from the position K1 to the position K2 is linear, the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R recede straight from the seedling pot 21. At this time, the force in the direction approaching each other acts on the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R by the restoring force of the tension spring 263, and the seedlings 22 extracted from the seedling pot 21 are held. I can do it. The opening / closing operation of the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R will be described later together with the operation of the push rod 281.

  The movement of the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R from the position K6 toward the position K1 is performed with respect to the seedlings 22 in the breeding pot 21 of the tray 20 at the seedling extraction position. 261L, 261R is inserted, and moves in the opposite direction along the path K from the position K1 to the position K2, so that the tips 261Lp, 261Rp of the pair of extraction claws 261L, 261R It is inserted almost straight into the pot 21. At this time, the force in the direction away from each other acts against the restoring force of the tension spring 263 on the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R, and both the tip portions are open. You can enter the seedling pot 21.

  Thus, the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R do not damage the tray 20, the seedling pot 21, and the seedling itself.

  The trajectory K from the position K1 to the position K2 and the trajectory K from the position K6 to the position K1 are substantially linear. The side near the tray supply device 100 of the guide groove 241 is linear. It is because it is done.

  Next, as moving from the position K2 to the position K3, the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R change their postures from the posture facing the seedling pot 21 until then substantially downward. When moved to the position K4, the tip portions 261Lp and 261Rp are substantially directed downward.

  The reason why the posture is suddenly changed substantially downward as described above is that the side of the guide groove 241 far from the tray supply device 100 is formed in a shape that rises in a substantially R shape.

  At that time, just below the tip portions 261Lp and 261Rp, the seedling insertion port (not shown) of the planting device 7 in the ascending process on the locus T1 (see FIG. 1) is directed upward toward the top dead center. The seedling 22 pushed out from the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R by the push rod 281 falls to the seedling inlet of the planting device 7 between the position K4 and the position K5. Supplied to the planting tool 11. The operation of the push rod 281 will be further described later.

  Next, from the position K5 toward the position K6, the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R abruptly move so that the posture that has been directed substantially downward until then can be opposed to the next seedling pot 21. The tip portions 261Lp and 261Rp are inserted into the new seedling pot 21 when the position is changed to move to the position K1.

  As can be seen from the general correspondence between the rotation position of the drive arm 220 and the positions of the tip ends 261Lp and 261Rp of the pair of extraction claws 261L and 261R on the locus K shown in FIG. 11, the position K4 to the position K5. Since the movement toward is performed more slowly than the movement from the position K1 to the position K2 described above, the removal of the seedling 22 from the seedling pot 21 can be performed quickly and the release of the seedling 22 to the planting device 7 is ensured. Can be done.

  Such an operation is performed because the connecting arm 230 is provided in front of the drive arm 220 (the extraction position of the tray supply device 100). Further, since the drive arm 220 is farther from the extraction position of the tray supply device 100 than the connection arm 230, it does not come into contact with the seedling 22 when the seedling 22 is taken out.

  Next, operations of the transmission mechanism 290 and the extrusion mechanism 280 will be mainly described with reference to FIGS. 9, 10, and 11.

  As shown in FIG. 9, the first gear 291 fixed to the distal end side portion 220 a of the drive arm 220 by the rotation of the drive arm 220 in the B direction moves in the B direction around the rotation fulcrum 220 b of the drive arm 220. Revolve. The first gear 291 is rotatably attached to the connecting arm 230 via the first rotation shaft 291a, and rotates the third gear 293 in the B direction via the second gear 292. The third gear 293 is fixed to the distal end portion 245 b of the first guided member 245 that is integral with the cam shaft 271, and the edge portion 245 a near the distal end of the first guided member 245 is connected to the connecting arm 230. Since the third gear 293 rotates, the cam 270 rotates in the B direction via the cam shaft 271. That is, the cam 270 rotates in accordance with the drive cycle of the drive arm 220.

  The cam 270 has an outer peripheral portion 272 whose thickness changes depending on the location, and an outermost edge portion 273 whose distance (outer diameter) from the center of the cam shaft 271 changes depending on the location. As shown, the protruding portion 273b in the outermost edge portion 273 has a larger outer diameter than the other portion 273a, and the thickness of the first range 272a is within the outer peripheral portion 272 at the same distance from the axial center of the cam shaft 271. The thickness is set smaller than the thickness of the second range 272b which is the remaining thick portion.

  With the above configuration, when the cam 270 rotates in synchronization with the drive cycle of the drive arm 220, the distal ends 261Lp and 261Rp of the pair of extraction claws 261L and 261R move from the position K6 to the position K1. The opening / closing operation of the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R and the operation of the push rod 281 are as follows.

  That is, the second range 272b, which is a thick portion of the outer peripheral portion 272 of the cam 270, comes into contact with the tip surfaces of the pair of left and right claw tip width restricting projections 262L and 262R, whereby a pair of extraction claws 261L and 261R The front end portions 261Lp and 261Rp are opposed to the restoring force of the tension spring 263, and force in directions away from each other is acting, and both the front end portions are open.

  On the other hand, at this time, the protrusion 273b of the outermost edge 273 of the cam 270 is in contact with the outer peripheral edge of the base portion of the first projection 283c for holding the tension spring, so that the push arm tension spring 284 is pulled. The pushing arm 283 is rotated counterclockwise in FIG. 10 (see arrow C), and the pushing rod 281 connected by the connecting rod 282 is maintained in the retracted state.

  Therefore, the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R can enter the seedling raising pot 21 and take out the seedling.

  Next, the opening / closing operation of the pair of extraction claws 261L, 261R and the distal ends 261Lp, 261Rp when the distal ends 261Lp, 261Rp of the pair of extraction claws 261L, 261R perform the operation from the position K1 toward the position K2, and the extrusion The operation of the rod 281 is as follows.

  That is, at the same time when the operation from the position K1 toward the position K2 is started, the first range 272a, which is a thin portion of the outer peripheral portion 272 of the cam 270, is connected to the tip surfaces of the pair of left and right claw tip width regulating projections 262L and 262R By making contact, the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R move toward each other due to the restoring force of the tension spring 263, so that both tip portions are closed.

  On the other hand, at this time, the protrusion 273b of the outermost edge 273 of the cam 270 is still in contact with the outer peripheral edge of the base portion of the first projection 283c for holding the tension spring, so that the push-out arm tension spring 284 is The pusher arm 283 is stretched and maintains the state of rotating counterclockwise in FIG. 10 (see arrow C), and the pusher rod 281 connected by the connecting rod 282 is maintained in the retracted state. Yes. Therefore, the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R can hold the extracted seedling 22 firmly at the tip portion and move to the planting device 7 side as it is.

  Next, the opening / closing operation of the pair of extraction claws 261L, 261R when the distal ends 261Lp, 261Rp of the pair of extraction claws 261L, 261R perform the operation from the position K4 toward the position K5, and the extrusion The operation of the rod 281 is as follows.

  That is, at the same time when the operation from the position K4 toward the position K5 is started, the other portion 273a of the outermost edge portion 273 of the cam 270 is replaced with the outer peripheral edge of the root portion of the first protrusion 283c for holding the tension spring. 10, the pushing arm 283 instantaneously turns clockwise in FIG. 10 by the restoring force of the pushing arm tension spring 284 (see arrow D), and the pushing arm connected by the connecting rod 282. At the same time as the rod 281 is pushed out, the cutout part 281b of the tip part 281a of the push rod 281 moves while expanding the tip parts of the pair of extraction claws 261L, 261R.

  Thereby, the seedling 22 pushed out from the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R by the tip portion 281a of the extrusion rod 281 falls to the seedling inlet of the planting device 7 and is supplied to the planting tool 11 Is done. At this time, the cutout portion 281b of the distal end portion 281a of the push rod 281 moves while pushing and expanding the distal end portions of the pair of extraction claws 261L and 261R, so that the dirt or the like attached to the distal end portion is simultaneously removed. It is.

  Next, the opening / closing operation of the pair of extraction claws 261L, 261R, 261Lp, and 261Rp when the distal ends 261Lp, 261Rp of the pair of extraction claws 261L, 261R perform the operation from the position K5 toward the position K6, and the extrusion The operation of the rod 281 is as follows.

  That is, in the outer peripheral portion 272 of the cam 270, the second range 272b which is a thick portion instead of the first range 272a which is a thin portion is in contact with the tip surfaces of the pair of left and right claw tip width regulating projections 262L and 262R. By doing so, the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R change to a state in which both tip portions are opened due to the force in the direction away from each other against the restoring force of the tension spring 263. To do.

  On the other hand, when coming to the vicinity of the position K6, the projecting portion 273b of the outermost edge portion 273 of the cam 270 contacts the outer peripheral edge portion of the base portion of the first projection 283c for holding the spring spring instead of the other portion 273a. As a result, the push arm tension spring 284 is extended, the push arm 283 is swung counterclockwise in FIG. 10 (see arrow C), and the push rod 281 connected by the connecting rod 282 is retracted. Change to state.

  In the above-described embodiment, the case where the pair of extraction claws 261L and 261R are integrally formed of the same metal plate member from the root portion to the distal end portion has been described. About the front end side, it may be made of, for example, a rubber plate or a resin plate that can be detached and has elasticity. Thereby, even if the tip part grasps the seedling 22 by the restoring force of the tension spring 263, the rubber plate is deformed by the elasticity of the tip side, so that the seedling 22 is not crushed.

  Further, the push rod 281 covers the upper ends of the pair of extraction claws 261L, 261R until the distal ends 261Lp, 261Rp of the pair of extraction claws 261L, 261R move to the vicinity of the position K6. Although configured, this can prevent the leaves of the seedling 22 on the tray 20 from being caught by the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R when moving from the position K5 to the position K6.

  In addition, the push rod 281 is configured to be retracted in accordance with the insertion speed when the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R are inserted into the seedling pot 21, thereby the leaves of the seedling 22 Can be prevented from being entangled with the end portions 261Lp and 261Rp.

  Next, the various operation levers and the operation unit 600 arranged near the pair of left and right handle grips 8L and 8R of the steering handle 8 will be described with reference to FIG. FIG. 12A is a plan view for explaining various operation levers and an operation unit 600 arranged in the vicinity of a pair of left and right handle grips 8L, 8R of the steering handle 8. FIG.

  As shown in FIG. 12 (a), a main clutch lever 80 is provided in the vicinity of the left handle grip 8L of the steering handle 8, and in the vicinity of the right handle grip 8R, a hydraulic lifting cylinder for raising and lowering the traveling vehicle body 15 is provided. An elevating operation lever 81 for actuating 10 is provided.

  FIG. 12B shows another embodiment of the main clutch lever 80. The main clutch lever 80 is rotated back and forth in the speed change groove 83 to switch the main clutch on and off, and the main clutch lever 80 is rotated left and right. A speed change arm 84 is provided so that the rotational position of the speed change arm 84 is detected by a sensor, and the gear speed in the transmission case 4 is electrically changed. On the lower side of the shift arm 84, the shift position display panel raising / lowering operation lever 81 is configured to be manually switchable in three stages of "down", "neutral", and "up", and when switched to the "down" position, The hydraulic elevating cylinder 10 operates to lower the traveling vehicle body 15, and the lowering is stopped by a sensor plate 710 (see FIG. 13) described later, and a planting cut-off button 620 (see FIG. 12 (a)) is turned on. If it is in the state, the planting clutch 420 is in the “ON” state, and the planting operation is started.

  When the lifting operation lever 81 is switched to the “neutral” position, the planting operation is stopped. When the lifting operation lever 81 is switched to the “raised” position, the hydraulic lifting cylinder 10 operates to raise the traveling vehicle body 15.

  Further, as shown in FIG. 12A, the operation panel 601 has, in order from the left end to the right end, (1) an empty space for operating only the planting tool 11 in a state where the traveling of the traveling vehicle body 15 is stopped. When the planting operation button 610 and (2) the lifting operation lever 81 are operated to the lowering operation position for lowering the traveling vehicle body 15, the planting tool 11 is operated in conjunction with the lowering operation, and the lowering operation A planting on / off button 620 for switching to any one of the states that are not linked to each other, (3) a display unit 630 for displaying at least between planted stocks, and (4) an adjustment button 640 for adjusting at least between planted stocks. ing.

  Since the planting on / off button 620 is electrically connected in series with the sky planting operation button 610, when the sky planting operation button 610 is turned on, the planting on / off button 620 is also turned on. The planting tool 11 operates.

  Here, the display unit 630 will be further described.

  In the seedling transplanter 1 of the present embodiment, “planting 1” for performing planting work by low-speed traveling is designated by the shift lever 190, or “planting 2” for performing planting work by high-speed traveling. The range between planted stocks that can be displayed on the display unit 630 is varied depending on whether or not is specified.

  Specifically, when the shift lever 190 is set to “planting 1 (low speed running)”, the range between planting stocks that can be set by the operator is 22 cm to 40 cm, and the shift lever 190 is set to “planting”. When set to “2 (high speed running)”, the range between planted stocks that can be set by the operator is initially set in the memory unit 810 of the control unit 800 to be 32 cm to 70 cm. These initial setting values can be changed. For example, when the speed ratio between “planting 1” and “planting 2” is changed, the operation unit 600 switches to a mode for changing the range between planted stocks, and then uses the adjustment button 640 to change between planting stocks. The range can be changed and set independently.

  In the present embodiment, the control in which whether the transmission lever 190 is set to “planting 1” or “planting 2” is determined according to the output signals from the first transmission switch 198 and the second transmission switch 199. Unit 800 (see FIG. 14) issues a command corresponding to the determination result to display unit 630. Thereby, the range between the planting stocks which an operator can set is displayed.

  That is, an upper limit and a lower limit that are ranges between planted stocks that can be set by the operator are simultaneously displayed in the left half area of the display unit 630, and a center value between planted stocks is temporarily displayed in the right half area. This is a configuration to display as a value.

  The operator changes the temporary value displayed in the right half display area of the display unit 630 to a desired stock within the range between the planted stocks displayed in the left half display area of the display unit 630. Therefore, the adjustment button 640 is operated.

  In order to realize the planting stock set by the operator in this way, the control unit 800 ((i) numerical information between planting stocks set by the adjustment button 640 and ((ii) “planting by the shift lever 190”). Using the presence of the ON signal from the first shift switch 198 and the second shift switch 199 to determine which one of “Appendix 1” and “Plant2” is set, the planting clutch 420 is The operation cycle of the solenoid 470 for setting the “ON” state is determined, and the solenoid 470 is energized according to the determined operation cycle.

  Thereby, the display unit 630 capable of displaying the range between planting stocks corresponding to the traveling speeds (“planting 1 (low speed)”, “planting 2 (high speed)”) designated by the shift lever 190 is used. Thus, the operator can set an appropriate planting plant within the range between planting plants corresponding to the designated traveling speed.

  For example, when the traveling speed is set to a slow mode, planting is performed between narrow planting stocks. Therefore, since the operating speed of the planting tool does not become extremely fast, the planting accuracy can be improved. In addition, when the traveling speed is set to the fast mode, it is planted between wide planted plants. Therefore, work efficiency can be improved.

  That is, according to the seedling transplanter 1 of the present embodiment, for example, when planting between narrow planting strains, the traveling speed is slowed so that the operating speed of the planting tool is not extremely increased, so that the planting accuracy is increased. When it is desired to plant between large planting stocks, the traveling speed can be increased to improve the work efficiency.

  In addition, it can be set between appropriate planting stocks according to work conditions such as farm fields and traveling speed.

  That is, for example, when planting work is performed on an inclined land, setting between planted plants in consideration of slip of the traveling vehicle body 15 is necessary in order to realize the same planted plant between the uphill slope and the downhill slope. . In the present embodiment, the same planting is performed on the uphill and downhill surfaces by setting an overlapping range between the planting stocks corresponding to both “planting 1” and “planting 2”. It becomes possible to realize between the stocks.

  Specifically, in this Embodiment, the range between the overlapping planted stocks is 32 cm-40 cm. In view of this, in consideration of slip, the shift lever 190 is set to “planting 2 (high speed)” capable of high-speed traveling, and the distance between planted stocks is set to 33 cm.

  On the other hand, on the descending inclined surface, the shift lever 190 is set to “planting 1 (low speed)” that allows low-speed traveling in consideration of slip, and the space between the planting stocks is set to 30 cm.

  Thereby, between an actual planted stock, 31.5 cm can be realized with an upslope and 31.5 cm with a downslope.

  In addition, in addition to responding to the ups and downs of slopes by making the adjustment range between planting stocks different between “planting 1” and “planting 2”, the traveling speed is increased when planting between wide stocks. This also has the effect of improving work efficiency.

  Here, the description returns to the operation panel 601 again. That is, according to the above configuration, the planting cut-off button 620 is disposed near the center of the operation panel 601, and thus it is easy to operate.

  Moreover, since the sky planting operation button 610 is disposed on the left side of the rear surface 601b different from the upper surface 601a on which other operation buttons are disposed, erroneous operations by the operator can be reduced.

  Further, since the display unit 630 is disposed near the center of the operation panel 601, it is easy to confirm.

  The adjustment button 640 includes an “up” push switch 640 a that changes the stock in the direction of expanding the stock, and a “down” push switch 640 b that changes in the direction of narrowing the stock on the lower side.

  With the above configuration, by operating the “raising” push switch 640a and the “lowering” push switch 640b, the numerical value indicating between stocks is directly displayed on the display unit 630, so that an operator can easily recognize between stocks.

  Next, referring mainly to FIG. 13 and FIG. 14, a solenoid 470 for performing planting on / off based on the operations of the planting depth adjusting mechanism 700, the planting on / off button 620, the lifting operation lever 81, and the like. The description will focus on the control unit 800 that controls the operation of the speed change motor 204 that changes the speed of the chain belt 202.

  FIG. 13 is a left side view illustrating a schematic configuration of the planting depth adjusting mechanism 700, and FIG. 14 is a schematic block diagram illustrating input / output to the control unit 800.

  As shown in FIG. 13, the planting depth adjusting mechanism 700 includes: (1) a sensor plate 710 having a gently curved bottom surface that maintains a constant planting depth by contacting the farm scene 701; ) A substantially L-shaped plate-like member in a side view, wherein an L-shaped bent portion is rotatably supported with respect to the traveling vehicle body 15 by a rotation support shaft 721, and one end 722 extending rearward is a sensor plate. The other end 723 that is pivotally connected to the front end 711 of the 710 and the pivot support shaft 722a and that extends upward is manually operated by an operator in the vertical (up and down) direction of the sensor plate 710. A depth arm 720 that is pivotably connected to the distal end portion 741 of the transmission rod 740 that transmits the movement of the depth lever 730 for setting the position; and (3) the depth arm 720 is swingable from the main frame 17. A hanging spring 750, (4) It is a substantially L-shaped plate-like member in a plan view, and an L-shaped bent portion is rotatably supported with respect to the traveling vehicle body 15 by a rotation support shaft 761, and a long hole is formed below the rotation support shaft 761. 762 is formed, and is urged by the tension spring 766 connected to the upper end portion 763 to rotate in the arrow Y direction with the rotation support shaft 761 as an axis, and is provided in the hydraulic pressure switching valve portion 40. A counter arm 760 having a front end portion 764 connected by a rod 765 with respect to a lift operation valve (not shown), and (5) a counter arm 771 is positioned so that the front end side of the elongated hole 762 of the counter arm 760 is positioned. A planting switch 770 disposed on the arm 760, and (6) a connecting pin 781a provided at one end 781 is inserted into the elongated hole 762, and the other end 782 is connected via a connecting shaft 783. The upper end 712 and rotatably coupled to a sensor rod 780 of capacitors plate 710, and a.

  Further, the sensor rod 780 is interlocked with the swing in the arrow Z direction of the upper end 712 of the sensor plate 710 by the upward swing of the sensor plate 710, so that the front end edge portion 781b of the one end 781 is turned on and off. It moves to the direction which pushes the detection lever 771, and is the structure which turns on the planting switch 770.

  According to the above configuration, since the depth arm 720 is suspended by the spring 750, rattling of the connecting portion between the depth arm 720 and the depth lever 730 is eliminated, and the depth set by the depth lever 730 is stable. To do. The spring 750 is configured to suspend the depth arm 720, but is not limited thereto, and may be configured to press the depth arm 720 against the main frame side, for example.

  Further, according to the above configuration, the counter arm 760 is pulled by the tension spring 766 in the direction of pushing down the sensor plate 710, so that the backlash between the sensor rod 780 and the counter arm 760 can be eliminated.

  Further, by changing the elastic force of the tension spring 766, the force pushing the sensor plate 710 can be changed.

  The sensor plate 710 is in contact with the farm scene 701 and detects the height of the ridge. As shown in FIG. 15, instead of the sensor plate 710, the ground roller 47 is used as the support shaft 46 of the ground roller 47. The height of the ground roller 47 may be detected by a potentiometer provided on the body support unit 45 and input to the control unit 800. Further, a scale is formed on the support shaft 46 so that the height can be confirmed by visual observation, or the support shaft 48 of the grounding roller 47 is pivotally supported on the support portion 49 of the support shaft 46 so as to be able to swing left and right. Alternatively, the tilt angle of the collar surface may be detected by detecting the swing angle of the support shaft 48.

  Next, a method of controlling the solenoid 470 by the control unit 800 provided below the operation panel 601 will be described with reference to FIG.

  As shown in FIG. 14, at least the on / off signal from the planting on / off button 620, the switching signal of the lifting operation lever 81, and the on / off signal from the planting switch 770 are input to the control unit 800, and these input signals are processed. Thus, a pulse signal is output from the control unit 800 to the solenoid 470 and the transmission motor 204.

  Based on the above configuration, the operation of the controller 800 will be mainly described with reference to FIGS.

  Here, after moving the seedling transplanting device 1 to a predetermined position in the field, (1) a scene where the planting operation is to be started, and then (2) a scene where the plant is traveling while planting in the field, and (3) The explanation will be divided into scenes that come to the edge of the kite and turn. (1) Scene where planting work is to be started: When the seedling transplanting apparatus 1 is moved to a predetermined position in the field, the planting on / off button 620 is in the “on” state and the lifting operation lever 81 is in the “up” position. , And the vehicle height of the traveling vehicle body 15 is at a high position.

  Further, it is assumed that the operator sets the transmission lever 190 to “planting 1”. As a result, the first shift switch 198 is turned on, the second shift switch 199 is turned off, and an ON signal is sent to the control unit 800 only from the first shift switch 198. Since the controller 800 has received the ON signal from the first shift switch 198 and has not received the ON signal from the second shift switch 199, it determines that “planting 1 (low speed)” has been set, A range “22 cm to 40 cm” between planted stocks corresponding to “planting 1 (low speed)” stored in advance in the memory unit 810 is read out and displayed in the left half display area of the display unit 630.

  The operator looks at the range between the planted stocks displayed on the display unit 630, and after confirming that 50 cm between the desired planted stocks is not within the range, operates the shift lever 190, Switch to “planting 2 (high speed)”. Then, the range “32 cm to 70 cm” between the planted strains is displayed in the left half display area of the display unit 630 and 51 cm is displayed as a temporary value between the planted strains in the right half display area. .

  The operator presses the adjustment button 640 to change the temporary value of 51 cm to 50 cm desired by the worker. Thereby, the setting between planting stocks is completed.

  Next, the operator operates the elevating operation lever 81 to the “lower” position to lower the vehicle height of the traveling vehicle body 15, whereby the sensor plate 710 is lowered together with the traveling vehicle body 15 toward the farm scene 701. When the sensor plate 710 contacts the farm scene 701, the front end 711 of the sensor plate 710 rotates in the arrow Z direction (see FIG. 13), so that the front end edge 781b of the sensor rod 780 pushes the on / off detection lever 771. By moving and turning on the planting switch 770, an ON signal from the planting switch 770 is input to the control unit 800.

  The control unit 800 outputs a signal indicating the “ON” state from the planting on / off button 620, a signal indicating the “down” position from the lifting operation lever 81, and an “ON” signal from the planting switch 770 under AND conditions. In response to this, a signal for energizing the solenoid 470 is output.

  Thereby, the planting clutch 420 is switched from the “cut” state to the “on” state, and the planting operation is started.

  That is, when the control unit 800 receives the various signals and determines that the planting conditions are satisfied, the planting clutch 420 is first switched to the “ON” state and the planting tool 11 is operated. When the operator starts the planting operation by operating the lifting operation lever 81 or the like, the planting tool 11 immediately plants the first seedling. Thereby, the planting operation can be started from the end of the field. (2) Scene of traveling while planting in the field: Here, it is assumed that the lifting operation lever 81 is in the “down” position, and the sensor plate 710 moves up and down according to the unevenness of the field scene 701. .

  In addition, the control unit 800 outputs a pulse signal at the operation cycle so that the solenoid 470 is energized at a predetermined operation cycle. Accordingly, the planting clutch 420 enters the “ON” state when the solenoid 470 is energized, and the intermittent cam 441 starts to rotate and completes one rotation (that is, the seedling planting operation is performed once). When finished, a series of operations of returning to the “off” state is repeated in the operation cycle.

  Thereby, a planting operation | work is performed intermittently and desired planting stock | strain is implement | achieved.

  Here, the predetermined operating cycle is controlled based on the traveling speed corresponding to “planting 2 (high speed)” specified by the operator and 50 cm which is the value between the planting stocks selected by the operator. Determined by part 800. The predetermined operation cycle is counted by a timer in the control unit 800.

  In response to the vertical movement of the sensor plate 710, the hydraulic lifting cylinder 10 operates as follows.

  That is, when the sensor plate 710 moves upward, the front end 711 of the sensor plate 710 moves in the direction of the arrow Z around the rotation support shaft 722a, and the connecting pin 781a provided at one end 781 of the sensor rod 780 When moving in the direction of pushing the front edge of the long hole 762, the counter arm 760 rotates in the clockwise direction in FIG. 13 with the rotation support shaft 761 as the axis, and this movement via the rod 765 causes the hydraulic pressure switching valve. It is transmitted to an elevating operation valve (not shown) provided in the section 40 and is operated in the direction in which the hydraulic elevating cylinder 10 extends, and the vehicle height of the traveling vehicle body 15 is increased.

  On the other hand, when the sensor plate 710 moves downward, the front end portion 711 of the sensor plate 710 moves in the direction opposite to the arrow Z direction around the rotation support shaft 722a and is connected to one end portion 781 of the sensor rod 780. When the pin 781a moves in a direction away from the front edge portion of the long hole 762, the counter arm 760 rotates in the arrow Y direction with the rotation support shaft 761 as the axis by the pulling force of the tension spring 766, and this movement is the rod 765. Is transmitted to a lifting operation valve (not shown) provided in the hydraulic pressure switching valve portion 40, and the hydraulic lifting cylinder 10 is operated in a shorter direction, and the vehicle height of the traveling vehicle body 15 is lowered.

  By the above operation, even if the farm scene 701 is uneven, the planting depth of the seedling can be kept constant. (3) Scene of turning to the edge of the heel: In this scene, the operator moves the lifting operation lever 81 from the “down” position to the “neutral” position in order to interrupt the planting operation.

  Accordingly, the control unit 800 receives the signal indicating the “neutral” position from the elevating operation lever 81 and stops outputting the pulse signal to the solenoid 470. Thus, after the planting clutch 420 is switched from the “ON” state to the “OFF” state, the “OFF” state is continuously maintained, so that the planting operation is interrupted.

  Further, the operator moves the lifting / lowering operation lever 81 from the “neutral” position to the “raised” position in order to turn the traveling vehicle body 15 toward the adjacent saddle.

  In conjunction with the movement of the cable 82 in response to the operation of the elevating operation lever 81, the elevating operation valve (not shown) provided in the hydraulic pressure switching valve unit 40 is operated, and the hydraulic elevating cylinder 10 moves in the extending direction. As a result, the vehicle height of the traveling vehicle body 15 increases.

  At this time, the sensor plate 710 is lowered and the planting switch 770 is turned off, but no signal is output from the control unit 800.

  The planting clutch 420 is maintained in the “disengaged” state, and the state where the planting operation is interrupted is continued.

  Therefore, the worker turns the traveling vehicle body 15.

  Next, when the operator moves the elevating operation lever 81 from the “raised” position to the “lowered” position through the “neutral” position, the hydraulic pressure is moved in conjunction with the movement of the cable 82 according to the operation of the elevating operation lever 81. When the lifting operation valve provided in the switching valve unit 40 is operated and the hydraulic lifting cylinder 10 is moved in the direction of shortening, the vehicle height of the traveling vehicle body 15 begins to decrease. Note that a signal indicating that the elevating operation lever 81 is in the “down” position is output to the control unit 800 by the operation of the elevating operation lever 81.

  Then, when the vehicle body of the traveling vehicle body 15 descends and the sensor plate 710 eventually comes into contact with the farm scene 701, the planting switch 770 is turned on as described in the above item (1), and the signal is transmitted to the control unit. 800 is input.

  Since the planting on / off button 620 remains in the “on” state, the control unit 800 transmits a signal indicating the “on” state from the planting on / off button 620 and a signal indicating the “down” position from the elevating operation lever 81. When the “ON” signal is received from the planting switch 770 under the AND condition, a signal for energizing the solenoid 470 is output. That is, similarly to the above, the control unit 800 outputs a pulse signal at the operation cycle so as to energize the solenoid 470 at a predetermined operation cycle.

  Thereby, the planting clutch 420 is switched from the “cut” state to the “entered” state, and the planting operation is started again.

  In this case, when the operator starts the planting operation again by operating the elevating operation lever 81 or the like, the timer count in the control unit 800 is reset. The planting tool 11 plants the first seedling. Thereby, planting operation can always be started from the end of the field.

  With the above configuration, by setting the planting on / off button 620 to the “on” state, the above-described (1) planting operation is started only by operating the elevating operation lever 81, and then (2) the farm field. A series of operations can be carried out continuously, such as traveling while planting inside, and (3) planting again after coming to the end of the fence and turning.

  In the above-described embodiment, the case where a seedling such as a vegetable is used as the transplant has been described. However, the present invention is not limited to this, and any transplant such as a seed pod may be used.

D Groove between pots 11 Planting tool 20 Tray 21 Nursery pot 22 Seedling 30 Cutting blade (horizontal cutting blade)
31 Cutting blade (Vertical cutting blade)
DESCRIPTION OF SYMBOLS 100 Tray supply apparatus 110 Seedling stand 200 Extraction apparatus 210 Extraction claw 215 Feeder 216 Check roller 221 Feed rod 222 Feed arm 222b Progress control cam (cam)
223b Engagement control cam (cam)
224 Torque spring (biasing member for entry)
226 Spring (urging member for feeding)
227 Stopper

Claims (2)

A tray (20) in which a large number of seedling pots (21) are connected vertically and horizontally on the surface side is placed on a seedling table (110) of the tray supply device (100), and seedlings are grown using the extraction claws (210) of the extraction device (200). In the transplanting machine which takes out the seedling (22) in the pot (21) and supplies it to the planting tool (11) to perform the planting operation,
A seedling pot on a feed rod (221) that enters and exits the inter-pot groove (D) of each seedling pot (21) from the bottom side of the tray (20) on the seedling stand (110) and sends the tray (20) to the seedling removal position A transplanter provided with cutting blades (30, 31) for cutting roots of seedlings (22) extended from (21).   The cutting blades (30, 31) are composed of a horizontal cutting blade (30) orthogonal to the feed direction of the tray (20) and a vertical cutting blade (31) intersecting the horizontal cutting blade (30). The transplanter according to claim 1.

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