JP2016214115A5 - - Google Patents

Description

Transplanter

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

  Conventionally, as a transplanter, a seedling supply device, a punching device for forming a hole for planting seedlings in a multi-film laid on a field, and a seedling are planted in a hole formed by the punching device on a traveling vehicle body What is comprised with the seedling planting apparatus is known (for example, refer patent document 1).

  The above-described conventional punching device of a transplanter is provided with a punching tool for making a hole in contact with the multi-film. And when the said punch is hold | maintained so that a vertical movement is possible, when the lower surface of a punch comes in contact with a multi-film, the force taken back acts by contact with a collar surface, and back It is configured to be able to swing.

JP 2003-225007 A

  However, in the above-described conventional seedling transplanting machine, the bottom surface of the punching tool is in contact with the multi-film and the heel surface during traveling, so that the force that the punching tool is likely to be brought backward is simply As a result, the perforating tool is merely configured to swing back and forth about the swinging axis, and the perforating tool itself is not configured to move backward in a stationary locus. There was a problem that the hole could not be formed properly in the multi-film due to being pulled forward by the punch.

  An object of the present invention is to provide a transplanter that can appropriately form holes in a belt-like sheet in consideration of the problems of the conventional transplanter.

The first of the present invention, provided with a seat (19) drilling device drilling a hole in the (500) for laying the field ridges, planting implant (22) into the hole the drilling device (500) is opened only In the transplanter, the punching device (500) moves the punching tool (510) for making a hole in the sheet (19 ) and the punching tool (510) downward in a stationary trajectory and moves backward. a transplanter, wherein Rukoto provided Rutotomoni moving mechanism for raising (520).

Further, according to the second aspect of the present invention, a link mechanism (524) for moving the moving mechanism (520) and an auxiliary link mechanism (523) are provided so as to be pivotable up and down, and the link mechanism (524) is a front link member. The transplanter according to claim 1, wherein (524-1) and a rear link member (524-2) are connected in series.

Further, in the third aspect of the present invention, the timing at which the link mechanism (524) rotates upward is delayed from the timing at which the auxiliary link mechanism (523) rotates upward, and the auxiliary link mechanism (523) rotates upward. after beginning by changing the angle rear link member (524-2) is formed (theta) wherein the front link member and (524-1) for a predetermined time period, the end portion after said link mechanism (524) is moved, an implantable device according to claim 2, characterized in that a structure for moving the drilling tool (the 510) to the rear.

The fourth aspect of the present invention provides a display device (630) for displaying information related to the planting work of the transplant (22), and the punching tool (510) melts the sheet (19) by heat. The temperature detecting member (513) for detecting the temperature of the punching tool (510) is provided, and the temperature detecting member indicates that the punching tool (510) has a temperature lower than a predetermined value. (513) when it detects the transplant according to the display device of any one of claims 1 to 3, characterized in that to indicate that the drilling tool (510) is low in (630) Machine.

As an invention related to any one of claims 1 to 4, the first related invention includes a display device (630) for displaying information related to planting work of the implant (22), and the hole The opening tool (510) is configured to open the hole by melting the sheet (19) with heat, and when it is detected that the temperature of the hole opening tool (510) is lower than a predetermined value, the display contents of the display device (630), said drilling tool (510) is switched to information indicating that the low temperature, it is transplanted machine you characterized.

In addition, a second related invention is a tube having a pointed tip, which is provided behind the punching device (500) and in which the implant (22) is planted in the hole opened by the punching device (500). A planting hopper (11) whose front end side opens and closes in the left-right direction while moving up and down, and a scraper on the inner surface of the planting hopper (11). The scraper (1510) and a scraper attachment part for attaching the scraper (1510) to the lower end side, and the upper end side of the fulcrum shaft (1522) located above the planting hopper (11) in a side view Are attached to the planting hopper (11) and arranged to come into contact with the scraper arm (1520). Scraper cam (1530), and scraper arm (1510) is brought into contact with scraper cam (1530) that rises together with planting hopper (11) that rises while opening the tip side. (1520) is actuated to move forward and enter the inside of the planting hopper (11) , or any one of claims 1 to 4, or the first relation The transplanter according to the invention .

Moreover, 3rd related invention is the soil adhering to any one of a pair of left-right front wheel (2), a pair of left-right rear wheel (3), and the said front wheel (2), and the said rear wheel (3). A wheel scraper (1600), which is a substantially U-shaped plate-shaped member that is bent along the tire contact surface and bent toward the tire axle, and is perpendicular to the axle and has a central portion of the axle. In a side view of the longitudinal section through, the scraper working surface (1604) of the wheel scraper (1600) is disposed obliquely with respect to a straight line (1605) passing through the working end (1604a) of the scraper working surface and the axle. The transplanter according to any one of claims 1 to 4, or the first or second related invention , characterized in that:

According to the first aspect of the present invention, since the punching tool (510) is moved by the machine moving mechanism (520), the punching tool (510) can be appropriately moved to the rear side along with the forward traveling of the machine body . , the shape of the planting holes that form the sheet over preparative (19) becomes appropriate, thereby improving the planting accuracy.

According to the second aspect of the present invention, in addition to the effect of the first aspect of the invention, the front link member (524-1) and the rear link member (524-2) are connected in series to form a link mechanism (524). By configuring this , the hole punching tool (510) can be accurately moved to the rear side.

Further, according to the third aspect of the present invention, in addition to the effect of the invention of claim 2, the link mechanism (524) rotates upward later than the auxiliary link mechanism (523), and the rear end portion of the link mechanism (524) Since the punching tool (510) is moved rearward by the movement of the hole, the punching tool (510) can be prevented from dragging the sheet (19) in the forward direction of the machine body. The shape of the hole becomes appropriate and the planting accuracy is improved .

Further, according to the fourth aspect of the present invention, in addition to the effect of the invention of any one of claims 1 to 3, it is indicated that the temperature of the hole punching device (510) detected by the temperature detection member (513) is low. By displaying on the device (630), it can be confirmed whether or not the hole can be properly drilled by the hole drilling tool (510), so that seedlings are prevented from being planted in an inappropriate planting hole.
Also, abnormalities such as failure and deterioration of the punching tool (510) can be recognized early.

Further, according to the first related invention , in addition to the effect of the invention of any one of claims 1 to 4, it can be confirmed whether or not the hole can be properly formed by the hole punching tool (510). Improper planting due to improperness can be prevented. Moreover, abnormality (failure, deterioration, etc.) of a punching tool (510) can be recognized.

Further, according to the second related invention , in addition to the effects of any one of claims 1 to 4 or the first related invention , the scraper (1510) and the scraper operating mechanism can be accommodated in a narrow space. The airframe can be made compact, the amount of movement of the scraper (1510) can be ensured, and the inner surface of the planting hopper (11) can be accurately scraped.

Further, according to the third related invention , in addition to the effect of any one of claims 1 to 4, or the first or second related invention, the ground contact surface of the tire at the corner of the wheel scraper (1510). Can be scraped well.

Left side view of seedling transplanter of Embodiment 1 of the present invention Plan view of seedling transplanter of Embodiment 1 (A): Left side view of the drilling device in the seedling transplanter of the first embodiment, (b): Lower roller on the outer peripheral surface of the first cam of the drilling device shown in FIG. Schematic side view showing each contact position and corresponding contact position of the upper roller on the outer peripheral surface of the second cam corresponding to each contact position (A): Schematic diagram for explaining the heat retaining mechanism of the electric heater in the seedling transplanter of the first embodiment, (b): Schematic diagram showing a modification of FIG. 4 (a) (A): A schematic cross-sectional view of the center of the planting tool according to the first embodiment cut along a plane parallel to the longitudinal direction of the aircraft and perpendicular to the ground, and viewed from the left side, (b): Planting Schematic sectional view of the center part of the tool cut from a plane parallel to the left-right direction of the machine body and perpendicular to the ground and viewed from the back side, (c): Arranged along the rear surface inside the planting tool Perspective view of rear guard viewed from left rear In the first embodiment, the operation of the extraction member, the operation of the planting tool, and the operation timing of the lateral feed operation of the seedling table of the tray supply device are shown, and the operation of the extraction member, the operation of the planting tool, and the tray supply The figure which shows the operation timing of the vertical feed operation | movement of the tray feed rod of an apparatus (A)-(b): The perspective view of the tray supply apparatus of this Embodiment 1. FIG. Schematic side view showing the configuration of the tray vertical feeding device of the first embodiment Left side view of seedling planting device and seedling planting device drive mechanism of Embodiment 1 Schematic left side view of the seedling planting device drive mechanism of the first embodiment The top view explaining the various operation levers arrange | positioned in the vicinity of a pair of left and right handle grips of the steering handle of the first embodiment, and the operation unit The left view which shows schematic structure of the planting depth adjustment mechanism of this Embodiment 1. Schematic configuration diagram explaining input and output to the control unit of the first embodiment The schematic side view explaining the scraper apparatus in the seedling transplanting machine of Embodiment 2 of this invention Schematic plan view for explaining the scraper device according to the second embodiment. Schematic side view for explaining the operation of the scraper device in the second embodiment (A): schematic plan view showing a wheel scraper provided on the left front wheel in the seedling transplanter of the second embodiment, (b): schematic left side of the wheel scraper device shown in FIG. 17 (a) Fig. (C): Schematic sectional view of the wheel scraper shown in Fig. 17 (b) taken along a plane perpendicular to the axle at the center position in the left-right width direction of the front wheel, (d): Left front wheel , Schematic enlarged view showing a modification of the fixed position of the wheel scraper (A): Side view showing schematic configuration of second punching device, (b): Schematic plan view showing configuration in which windproof cover is divided into left windproof cover and right windproof cover. (A): Perspective views of a left-turning scraper and a right-turning scraper that are divided into left and right and are respectively attached to a scraper mounting portion so as to be turnable; (b): a left-turning scraper and a right-turning scraper Schematic rear view showing a pair of left and right over-opening prevention stoppers formed on

  Hereinafter, a seedling transplanter according to an embodiment of the transplanter of the present invention will be described.

(Embodiment 1)
In Embodiment 1, a seedling transplanter according to an embodiment of the transplanter of the present invention will be described with reference to the drawings.

  FIG. 1 shows a schematic left side view of the seedling transplanter 1 of the present embodiment, and FIG. 2 shows a schematic 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. The planting tool 11 is moved up and down to plant the seedlings 22 (see FIG. 7), which are arranged at the rear of the traveling vehicle body 15 and the engine 12 and the transmission case 4 (also referred to as a main transmission case) 4, in the field U. The seedling planting apparatus 300 to be swung, the tray supply apparatus 100 for supplying the tray 20 (see FIG. 7) containing the seedlings 22, and the seedling pot 21 (see FIG. 7) of the tray 20 of the tray supply apparatus 100. A planting depth adjusting mechanism including an unloading device 200 that has a takeout member 260 inserted therein to take out the seedling 22 and supply it to the planting tool 11 and a sensor plate 710 for keeping the planting depth of the seedling 22 constant. 700 (see FIG. 12) , Suppression ring 13, is configured to include a steering wheel 8, and arranged in the center of the steering wheel 8 operating section 600 or the like.

  Further, in the seedling transplanter 1 of the present embodiment, a punching device 500 (a punching device 500 for opening a planting hole for seedling planting with a punching tool 510 in contact with the multi-film 19 previously laid on the straw U in the field. FIG. 3A is arranged in front of the planting tool 11. The movement of the punching tool 510 by the punching device 500 is synchronized with the movement of the planting tool 11, and the planting tool 11 enters the planting hole opened by the drilling tool 510 to plant the seedling 22. It is a configuration.

  In addition, the lower end part of the planting tool 11 is the structure which draws the planting locus | trajectory T1 shown in FIG. 1 as a stationary locus | trajectory (trajectory of the state which stopped driving | running | working of the traveling vehicle body 15) by the action | operation of the seedling planting apparatus 300. .

  The seedling 22 of the present embodiment is an example of the transplant of the present invention.

  In addition, as shown in FIG. 2, the tray supply device 100 is provided with a tray detection device 1100 for detecting that the tray 20 is not placed on the tray conveyance path 111.

  In the feeding operation of the tray supply device 100 of the seedling transplanter 1 according to the present embodiment, (1) a seedling stand for the seedlings 22 in the seedling pot 21 corresponding to one row in the horizontal direction of the tray 20 to be sequentially taken out by the takeout member 260. 110 is intermittently fed to the left and right in the horizontal direction, and (2) after the removal of the seedlings 22 of all the seedling pots 21 for one horizontal row is completed, the tray 20 on the seedling stand 110 is There is a longitudinal feeding operation in which the feeding rod 121 feeds the row of the seedling pot 21 in the horizontal direction downward.

  The vertical feed by the tray feed rod 121 is in a state where the tip of the tray feed rod 121 is engaged with the groove between the adjacent seedling pots 21 on the back side of the tray 20, and in this state, the tray feed rod 121 is substantially in a side view. The tray 20 is rotated by drawing a square locus A (see FIG. 8), and the tray 20 is intermittently vertically fed along the tray conveyance path 111.

  Detailed configurations of the tray supply device 100 and the tray detection device 1100 will be described later with reference to FIGS.

  As shown in FIGS. 1 and 2, the rotational power output from the engine 12 is branched by the mission case 4 and transmitted to the pair of left and right rear wheels 3 via the pair of left and right traveling transmission cases 9. It is the structure transmitted also to the planting transmission 18 provided in the rear side of the mission case 4.

  That is, in the seedling transplanter 1 of the present embodiment, as described above, a hole for seedling planting is made by the punching device 500 in the multi-film 19 previously laid on the straw U in the field, and the seedling is transplanted from the seedling pot 21. The driving force from the transmission case 4 is transmitted to the planting transmission 18 to take out 22 and plant it in the hole. That is, a driving force is transmitted from the planting transmission device 18 to the take-out device 200 via the chain belt 202 (see FIG. 1) and also transmitted to the drilling device 500 via the drilling drive shaft 29 (see FIG. 1). 2). Further, the planting device 11 is driven via the seedling planting device driving mechanism 400 attached to the planting transmission device 18 and the seedling planting device 300.

  In addition, the planting operation of the seedling transplanter 1 of the present embodiment is configured to be intermittently performed by the seedling planting device drive mechanism 400.

  The hole punching device 500 will be further described later with reference to FIGS.

  Detailed configurations of the seedling planting device 300 and the seedling planting device driving mechanism 400 will be described later with reference to FIGS.

  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. The seedlings 22 can be automatically planted in the holes opened in the multi-film 19 by the punching device 500.

  The traveling unit is provided with a body control mechanism 180 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.

  The airframe control mechanism 180 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. 11), which will be described later, is connected to the lift operation valve via a cable 82, and a counter arm 760 (see FIG. 12), which will be described later, is connected via a rod 765. .

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

  Next, the punching device 500 will be further described mainly with reference to FIGS. 3 (a) and 3 (b).

  FIG. 3A is a left side view of the punching device 500, and FIG. 3B shows the contact positions P1 to P5 of the lower roller 526-1 on the outer peripheral surface of the first cam 521, and It is a schematic side view showing corresponding contact positions Q1 to Q5 of the upper roller 526-2 on the outer peripheral surface of the second cam 522.

  As shown in FIG. 3A, the punching device 500 is in contact with the multi-film 19 laid on the ridge U and melted by heat to open a planting hole, and the drilling tool 510 is moved to a stationary locus. A vertical movement mechanism 520 that moves in the vertical direction and the front-rear direction in the state where the traveling vehicle body 15 has stopped traveling is provided.

  That is, the lower end central portion 510a of the punching tool 510 draws a perforation stationary trajectory 500T shown in FIG. 3A as a stationary trajectory by the operation of the vertical movement mechanism 520, and the motion corresponding to the perforating stationary trajectory 500T. As a locus (trajectory in a state in which the traveling vehicle body 15 is traveling), a hole movement locus 500T1 shown in FIG.

  Further, the punching tool 510 has an electric heater portion 511 disposed on the lower side and in contact with the multi-film 19, and a hole that holds the electric heater portion 511 at the lower end portion and is connected to the vertical movement mechanism 520 at the upper end portion. It is comprised by the opening tool connection member 512. FIG. In the electric heater unit 511, a multi-cut heater (not shown) and a multi-cut heater temperature sensor 513 (see FIG. 13) for detecting the temperature of the multi-cut heater are arranged. 800 (see FIG. 13).

  Here, regarding the multi-cut heater, the configuration of the operation panel 601 (see FIG. 11) and the control unit 800 (see FIG. 13) will be described with reference to FIGS.

  That is, a multi-cut on / off switch 602 for turning on / off the multi-cut heater is disposed on the operation panel 601 of the operation unit 600 (see FIGS. 11 and 13). Further, when an abnormality of the multi-cut heater is detected by the control unit 800, such as when the temperature of the multi-cut heater detected by the multi-cut heater temperature sensor 513 does not reach the set temperature, the control unit 800 performs the planting operation. Is stopped, and a warning lamp 603 (see FIGS. 11 and 13) arranged on the operation panel 601 for notifying abnormality of the multi-cut heater is blinked.

  In addition, the operation panel 601 is provided with a display unit 630 that displays at least between planted strains and an adjustment button 640 that adjusts at least between planted strains, which will be described later. The adjustment button 640 includes an “up” push switch 640a and a “down” push switch 640b. In addition to being used for an operation for setting between stocks to widen or narrow stocks, which will be described later, a changeover switch ( By the operation (not shown), the temperature can be used for a temperature setting operation for setting the temperature of the multi-cut heater, and the set temperature is displayed on the display unit 630. When there is no input from the push switches 640a and 640b by the operator for a predetermined time, the controller 800 determines that the temperature setting operation has been completed, and the temperature detected by the multi-cut heater temperature sensor 513 is the set temperature. Instead of this, the display unit 630 is automatically displayed.

  Even if the operator does not operate the changeover switch to display the temperature of the multi-cut heater on the display unit 630, the multi-cut heater is turned on after the multi-cut on / off switch 602 is turned on. Until the temperature reaches the set temperature (or usable temperature), the detection temperature display of the multi-cut heater temperature sensor 513 is preferentially displayed instead of the inter-strain setting display described later.

  Furthermore, the control unit 800 is configured not to start the planting operation until the temperature detected by the multi-cut heater temperature sensor 513 reaches a set temperature (or usable temperature).

  Thereby, it is possible to prevent the planting operation from being started at a stage where the temperature at which the multi-cut heater has not reached the usable temperature, and it is possible to prevent the planting operation from being re-executed due to a poor perforation of the multi film 19.

  Further, the controller 800 turns on the multi-cut heater from the temperature rise curve of the multi-cut heater detected by the multi-cut heater temperature sensor 513 after the worker turns on the multi-cut on / off switch 602 before planting. If it is determined whether or not the performance has deteriorated, and it is determined that the performance has deteriorated, a warning message is displayed on the display unit 630 to prompt the user to replace the multi-cut heater due to deterioration or the like before starting the planting operation. At the same time, the warning lamp 603 blinks.

  With the above configuration, while the multi-cut heater is heated, the heater temperature is displayed and a warning message is displayed on the display unit 630 in some cases, so that the operator can easily break down or deteriorate the multi-cut heater. It is possible to recognize and prevent the interruption of the work due to the failure during the planting work by early replacement of the parts, thus improving the work efficiency.

  The operation of the control unit 800 based on the detection result of the multi-cut heater temperature sensor 513 will be further described later with reference to FIG. Further, the configuration of the operation panel 601 and the control unit 800 other than those described above will be further described later with reference to FIGS. 11 and 13.

  Here, returning to FIGS. 3A and 3B again, the description of the punching device 500 will be continued.

  That is, the vertical movement mechanism 520 is fixed to the drilling drive shaft 29 on the left side of the first cam 521 and the first cam 521 fixed to the drilling drive shaft 29 protruding leftward from the planting transmission device 18. The front end 523F is rotatably connected to the second cam 522 and the upper link shaft 523a fixed on the left outer surface of the planting transmission device 18 and above the drilling drive shaft 29. With respect to the upper link mechanism 523 having the end portion 523B vertically swingable, and the lower link shaft 524a fixed on the left outer surface of the planting transmission device 18 and below the drilling drive shaft 29. A lower link mechanism 524 to which a front end portion 524F is rotatably connected and a connecting shaft 524b, which will be described later, is attached so as to be vertically swingable, a rear end portion 523B of the upper link mechanism 523, and a rear end of the lower link mechanism 524 Part And 24B, pivotally connected via the upper connecting shaft 523c and the lower coupling shaft 524c, and a connecting arm 525 which connects the piercing tool coupling member 512 at the lower end side.

  In addition, the lower link mechanism 524 is a series of a lower front link member 524-1 disposed on the front side and a lower rear link member 524-2 disposed on the rear side so that the connection shaft 524b can rotate. The lower roller 526-1 is rotatably attached to the middle of the lower front link member 524-1.

  Further, the lower front link member 524-1 is provided with a stopper pin 524e standing below the connecting shaft 524b, and the stopper pin 524e is located below the connecting shaft 524b in the lower rear link member 524-2. The lower limit of the angle θ (see FIG. 3A) formed by the lower front link member 524-1 and the lower rear link member 524-2 is regulated by abutting the angle regulating stopper 524-2a protruding toward the bottom. doing. In addition, a lower end portion of the lower link tension spring 527 is hung on the long hole 524d provided in the middle of the lower front link member 524-1, and the upper end portion of the lower link tension spring 527 is on the upper side. It is hung on a fixing pin 18b provided in the link mechanism 523. The force to shrink the lower link tension spring 527 acts in a direction to always reduce the angle θ formed by the lower front link member 524-1 and the lower rear link member 524-2, The lower roller 526-1 acts to move while always in contact with the outer peripheral surface of the first cam 521.

  In addition, the force for contracting the lower link tension spring 527 is set so as to sufficiently suppress the inertia of the punching tool 510, so that the operating speed (whether idling or full throttle). Regardless, the lower end center portion 510a of the electric heater 511 always moves while drawing the same perforated stationary locus 500T.

  The angle θ formed above is an angle formed between the first straight line L1 passing through the center of the connecting shaft 524b and the lower link shaft 524a and the second straight line L2 passing through the center of the connecting shaft 524b and the lower connecting shaft 524c. is there.

  Further, an upper end portion of the upper link tension spring 528 is hung in a long hole 523d provided in the middle of the upper link mechanism 523, and a lower end portion of the upper link tension spring 528 is a lower rear link member 524. 2 is fixed at a predetermined position. The upper roller 526-2 is configured to move while always in contact with the outer peripheral surface of the second cam 522 by the force of the upper link tension spring 528 to contract.

  The lower link tension spring 527 and the upper link tension spring 528 described above are both provided between the upper link mechanism 523 and the lower link mechanism 524, and the upper link mechanism 523 and the lower link mechanism 524 are provided. It is the structure which urges | biass to the side where the space | interval becomes narrow.

  Further, the hole drilling member connecting member 512 is fixed so as to be slidable up and down by fastening bolts 525c that are arranged to penetrate through the long holes 525a and 525b formed in parallel to the lower end side of the connecting arm 525. . Further, as shown in FIG. 3A, four lower holes 525d for inserting the fastening bolts 525c are provided on the hole connecting member 512 side, so the lower holes 525d for inserting the fastening bolts 525c are selected. By doing so, it is the structure which can also change the attachment position with respect to the connection arm 525 of the drilling tool connection member 512 also in the front-back direction.

  Thereby, the position of the drilling tool 510 can be adjusted in response to changes in planting depth and travel speed of the traveling vehicle body 15 (first speed, second speed).

  In addition, the multi film 19 of this Embodiment corresponds to an example of the strip | belt-shaped sheet | seat of this invention. Further, the lower front link member 524-1 and the lower rear link member 524-2 of the present embodiment correspond to an example of a plurality of link members of the present invention. Further, the connecting arm 525 of the present embodiment is an example of the punching tool holding arm of the present invention. The first cam 521 of the present embodiment is an example of the lower link cam of the present invention, and the second cam 522 of the present embodiment is an example of the upper link cam of the present invention.

  Next, the operation of the punching device 500 will be described with reference to FIGS. 3 (a) and 3 (b).

  When the drilling drive shaft 29 rotates counterclockwise as shown in FIGS. 3A and 3B, the first cam 521 and the second cam 522 rotate counterclockwise following this. Move.

  Hereinafter, the contact positions P1 to P5 of the lower roller 526-1 on the outer peripheral surface of the first cam 521 and the contact positions Q1 to Q5 of the upper roller 526-2 on the outer peripheral surface of the second cam 522 are associated with each other. A description will be given of how the lower end central portion 510a of the electric heater portion 511 moves between the positions X1 to X5 on the perforated stationary trajectory 500T.

  1) When the contact position of the lower roller 526-1 is at P1, the contact position of the upper roller 526-2 is at Q1. At that time, the position of the lower end center portion 510a of the electric heater portion 511 on the perforated stationary trajectory 500T is a position X1 (P1, Q1).

  Here, the position Xn on the trajectory is expressed as Xn (Pn, Qn) using Pn as the contact position of the lower roller 526-1 and Qn as the contact position of the upper roller 526-2. However, n is an integer of 1 to 5.

  2) As the perforating drive shaft 29 rotates, the contact position of the lower roller 526-1 moves from P1 to P2, and simultaneously, the contact position of the upper roller 526-2 moves from Q1 to Q2.

  Accordingly, the rear end portion 523B of the upper link mechanism 523 is lowered, and the lower roller 526-1 is pushed rearward and obliquely downward by the first cam 521. Therefore, the lower link mechanism 524 increases the angle θ formed by the lower link mechanism 524. That is, the rear end portion 524B of the lower link mechanism 524 moves rearward.

  As a result, the lower end central portion 510a of the electric heater portion 511 descends while moving backward on the perforated stationary trajectory 500T, and enters the surface of the ridge U via the multi-film 19 to position X2 (P2, Q2 ).

  The electric heater 511 is sufficiently heated, and the multi-film 19 that has come into contact therewith melts into a circular shape on the bottom surface of the electric heater 511 so that a planting hole is opened.

  At this time, the lower end central portion 510a of the electric heater 511 moves from the position X1 to the position XT1 on the hole movement locus 500T1 (represented by a two-dot chain line in FIG. 3A). Since the traveling vehicle body 15 is traveling forward, the movement of the drilling movement trajectory 500T1 from the position X1 to the position XT1 is a trajectory that is nearly perpendicular to the drilling stationary trajectory 500T. That is, during traveling, the hole punching tool 510 can be lowered substantially vertically to open a hole for planting in the multi-film 19.

  When the electric heater 511 is at the position X1 (P1, Q1), the bottom surface of the electric heater 511 is inclined with respect to the flange U in side view, but at the position X2 (P2, Q2). When it reaches, the bottom surface of the electric heater 511 is configured to be parallel to the flange U.

  3) By further rotating the perforating drive shaft 29, the contact position of the lower roller 526-1 moves from P2 to P3, and at the same time, the contact position of the upper roller 526-2 moves from Q2 to Q3.

  At this time, since there is almost no change in the distance from the cam center on the outer peripheral surface of the second cam 522 at the contact positions Q2 to Q3, the rear end portion 523B of the upper link mechanism 523 is neither lowered nor raised. On the other hand, since the distance from the cam center on the outer peripheral surface of the first cam 521 at the contact positions P2 to P3 changes in the increasing direction, the lower roller 526-1 is pushed further rearward and obliquely downward. The side front link member 524-1 rotates downward about the lower link shaft 524a, and the rear end portion 524B of the lower link mechanism 524 moves rearward. That is, at this time, the lower link mechanism 524 moves in a direction that further increases the angle θ formed by the lower link mechanism 524.

  As a result, the lower end central portion 510a of the electric heater 511 moves rearward from the position X2 (P2, Q2) on the perforated stationary trajectory 500T to reach the position X3 (P3, Q3).

  In addition, the lower end center part 510a of the electric heater part 511 at this time does not move from the position XT1 on the drilling movement locus 500T1.

  Thereby, even when the traveling vehicle body 15 is traveling forward, the punching tool 510 can be appropriately moved rearward, so that there is no relative displacement in the front-rear direction as viewed relatively. Can be prevented from being dragged in the forward direction, and a planting hole can be appropriately formed in the multi-film 19.

  4) Furthermore, as the perforating drive shaft 29 rotates, the contact position of the lower roller 526-1 moves from P3 to P4, and at the same time, the contact position of the upper roller 526-2 moves from Q3 to Q4. To do.

  At this time, since the distance from the cam center on the outer peripheral surface of the second cam 522 at the contact positions Q3 to Q4 starts to increase, the rear end portion 523B of the upper link mechanism 523 starts to rise. On the other hand, since the distance from the cam center on the outer peripheral surface of the first cam 521 at the contact positions P3 to P4 continues to increase gradually, the lower roller 526-1 is pushed further rearward and obliquely downward. The front link member 524-1 rotates downward and the rear end portion 524B of the lower link mechanism 524 moves further rearward.

  As a result, the lower end central portion 510a of the electric heater 511 moves upward on the perforated stationary trajectory 500T while moving backward from the position X3 (P3, Q3), and moves away from the multi-film 19 at the position X4 (P4, Q4). ).

  Note that the lower end central portion 510a of the electric heater 511 at this time moves upward from the position XT1 on the drilling movement locus 500T1 to the position XT2 because the upper link mechanism 523 starts to rise.

  Thereby, even when the traveling vehicle body 15 is traveling forward, the punching tool 510 can be appropriately moved rearward, so that there is almost no displacement in the front-rear direction as viewed relatively. 19 can be prevented from being dragged in the forward direction, and a planting hole can be appropriately formed in the multi-film 19.

  5) Furthermore, as the perforating drive shaft 29 rotates, the contact position of the lower roller 526-1 moves from P4 to P5, and at the same time the contact position of the upper roller 526-2 moves from Q4 to Q5. To do.

  At this time, since the distance from the cam center on the outer peripheral surface of the second cam 522 at the contact positions Q4 to Q5 continues to increase, the rear end portion 523B of the upper link mechanism 523 continues to rise. On the other hand, since the distance from the cam center on the outer peripheral surface of the first cam 521 at the contact positions P4 to P5 starts to decrease rapidly, the lower roller 526-1 is a force for contracting the lower link tension spring 527. As a result, the lower front link member 254-1 starts to rotate upward about the lower link shaft 524a, and the rear end portion 524B of the lower link mechanism 524 quickly moves forward. Moving.

  As a result, the lower end central portion 510a of the electric heater portion 511 is moved up quickly while moving forward from the position X4 (P4, Q4) on the perforated stationary trajectory 500T, thereby synchronizing with the movement of the electric heater portion 511 in the rear. Then, it reaches a position X5 (P5, Q5) away from the planting tool 11 that descends.

  At this time, the lower end central portion 510a of the electric heater portion 511 starts moving diagonally forward from the position XT2 on the punching movement locus 500T1 because the rear end portion 524B of the lower link mechanism 524 starts to move forward quickly. Moving.

  As a result, the electric heater 511 moves quickly forward after coming out of the ridge U, so that it is possible to reliably interfere with the planting tool 11 descending in synchronization with the movement of the electric heater 511 at the rear. It can be prevented.

  6) Furthermore, as the perforating drive shaft 29 rotates, the contact position of the lower roller 526-1 moves from P5 to P1, and the contact position of the upper roller 526-2 moves from Q5 to Q1. And the lower end center part 510a of the electric heater part 511 returns to the position X1 (P1, Q1).

  Here, the position X4 (P4, Q4) at which the lower front link member 524-1 of this embodiment starts to rotate upward about the lower link shaft 524a is the rear end portion 523B of the upper link mechanism 523. Is positioned later in time than the position X3 (P3, Q3) at which the lift starts, the timing at which the lower link mechanism of the present invention starts to rise is later than the timing at which the upper link mechanism starts to rise. This is an example of what is configured.

  Further, the angle θ (see FIG. 3A) formed by the lower front link member 524-1 and the lower rear link member 524-2 in the present embodiment is a plurality of the lower link mechanisms of the present invention. This is an example of the angle formed by the link members.

  In addition, the position X4 (P4, P4, P4, P2) from the position X2 (P2, Q2) temporally before the position X3 (P3, Q3), which is the timing at which the rear end 523B of the upper link mechanism 523 of the present embodiment starts to rise. In the time period up to Q4), the angle θ formed by the lower front link member 524-1 and the lower rear link member 524-2 of the present embodiment is changed in the direction of increasing. This corresponds to an example of a configuration in which an angle formed by a plurality of link members constituting the lower link mechanism is changed in a predetermined period before the upper link mechanism starts to rise.

  Next, the heat retaining mechanism of the electric heater unit 511 of the punching device 500 will be described with reference to FIG.

  FIG. 4A is a schematic diagram for explaining a heat retaining mechanism of the electric heater 511. FIG. 4B is a schematic diagram showing a modification of FIG.

  In addition, the same code | symbol is attached | subjected to the same structure as the structure demonstrated in Fig.3 (a) and FIG.3 (b), and the description is abbreviate | omitted.

  As shown in FIG. 4, a stay rod 515 having a roller 514 rotatably provided at a lower end portion is held by a rod holder 516 so as to be vertically slidable on the upper end side of the hole connecting member 512. An upper end portion 515 a of the stay rod 515 has a substantially T shape and is configured not to fall out of the rod holder 516. The electric heater unit 511 is attached to the drilling tool connecting member 512 via a heat insulating material 511a. A cylindrical windproof cover 517 that covers the entire side surfaces of the heat insulating material 511 a and the electric heater 511 has an outer surface 517 a on the front side fixed to the surface of the stay rod 515.

  With the above configuration, when the electric heater 511 is located away from the ridge U, the windproof cover 517 covers the entire side surface of the electric heater 511, so that the multi-cut heater (not shown) is cooled by wind. To be prevented.

  Further, as the electric heater 511 descends and approaches the flange U, the roller 514 comes into contact with the surface of the multi-film 19, and the electric heater 511 further descends while rolling on the surface, whereby the stay rod 515 is held by the rod. While being held by the tool 516, slide upward. Thereby, the windproof cover 517 fixed to the stay rod 515 is also raised at the same time, and only the lower end portion of the electric heater portion 511 enters the surfaces of the multi-film 19 and the ridge U.

  Since the roller 514 is attached to the lower end portion of the stay rod 515, the multi-film 19 is not damaged.

  Thereby, while the time until the electric heater 511 reaches an appropriate temperature is shortened and the heat retaining performance is improved, holes can be efficiently and reliably formed in the multi-film 19.

  The roller 514 is provided at the lower end portion of the stay rod 515 to prevent the multi-film 19 from being damaged. However, the present invention is not limited to this. For example, as shown in FIG. 4B, the lower end of the stay rod 515 is provided. The portion of the portion 515b that contacts the multi-film 19 may be configured to have an R-bending shape (for example, hemming bend) in side view, in short, any configuration as long as the multi-film 19 is not damaged. But it ’s okay.

  Further, the windproof cover 517 is not limited to a cylindrical shape, and for example, when the outer shape of the electric heater portion 511 is a shape other than a circle in a plan view, the shape may match the shape. Any shape may be used as long as the windproof function for suppressing the cooling of the electric heater 511 can be exhibited.

  Next, the planting tool 11 is demonstrated using Fig.5 (a)-FIG.5 (c).

  FIG. 5A is a schematic cross-sectional view of the center of the planting tool 11 cut from a plane parallel to the longitudinal direction of the body and perpendicular to the ground, and viewed from the left side, FIG. FIG. 5 is a schematic cross-sectional view of the center of the planting tool 11 cut from a plane parallel to the left-right direction of the body and perpendicular to the ground, and viewed from the back side, and FIG. It is the perspective view which looked at the rear guard 1210B arrange | positioned along the inner rear surface from the left rear.

  As shown in FIGS. 5 (a) and 5 (b), the planting tool 11 has a pair of left and right hopper parts 1011L and 1011R, and a left hopper part 1011L, which temporarily hold seedlings and plant them in the field. The left hopper holder 1012L and the right hopper holder 1012R, which hold the upper end portion of the right hopper portion 1011R and can be separated from each other so as to open and close the front end sides of the left hopper portion 1011L and the right hopper portion 1011R; 1012L and the right hopper holder 1012R are fixed to the holder holding frame 1013 that can pivot about the fulcrum shaft 1013a, and the lower left side of the left hopper holder 1012L and the right hopper holder 1012R. Part 1011L and right hopper part 10 The left and right sides of the hopper tension spring 1014 that constantly urges the compression force in the closing direction of the 1R, and the left and right hopper holders 1012L and 1012R are fixed to the front upper ends of the left and right hopper holders 1012R. A pair of opening / closing arms 1015L and 1015R is provided.

  Here, the connecting portion 1012La of the left hopper holder 1012L and the connecting portion 1012Ra of the right hopper holder 1012R have a gear shape, and the gear shape is shifted by half a tooth at the front and rear, and the gears are assembled by facing the left and right sides. Is configured to mesh. Specifically, when the right opening / closing arm 1015R fixed to the right hopper holder 1012R and connected to the other end 352 of the opening / closing connection cable 350 is pulled by the opening / closing connection cable 350, the right hopper holder 1012R. The connecting portion 1012Ra rotates about the fulcrum shaft 1013a in the direction in which the right hopper portion 1011R opens. At the same time, when the gear meshes with the connecting portion 1012Ra of the right hopper holder 1012R, the connecting portion 1012La of the left hopper holder 1012L rotates in conjunction with each other, so that the left hopper portion 1011L rotates simultaneously.

  Further, the pair of left and right hopper portions 1011L and 1011R have a substantially cylindrical shape in which the lower end portion is pointed like a bowl in the closed state and the upper end portion is opened.

  The front and rear end surfaces where the left hopper portion 1011L and the right hopper portion 1011R face each other have a substantially V-shaped front V-shaped notch portion 1200F in front view and a substantially V-shape in rear view. A rear V-shaped notch 1200B is provided.

  By providing the front V-shaped notch portion 1200F and the rear V-shaped notch portion 1200B, when the planting tool 11 is closed, the contact portion between the mating surfaces of the left hopper portion 1011L and the right hopper portion 1011R becomes small. Noise generated by hitting the mating surfaces can be reduced.

  In addition, the planting tool 11 of the present embodiment includes a front guard 1210F that covers the front V-shaped notch 1200F from the inside and a rear guard 1210B that covers the rear V-shaped notch 1200B from the inside.

  The front guard 1210F has an upper end 1210Fa fixed to the front rising portion 1013F of the holder holding frame 1013, and extends obliquely downward toward the inner center of the planting tool 11 from a side view thereof (see FIG. 5A). The flat plate portion is configured to substantially cover the front V-shaped notch portion 1200F in rear view (see FIG. 5B).

  The rear guard 1210B has a left upper end 1210BL and a right upper end 1210BR fixed to the rear end side of the left frame portion 1013L and the rear end side of the right frame portion 1013R of the holder holding frame 1013. As shown in FIG. 5A, a flat plate portion extending obliquely downward toward the inner center of the planting tool 11 is configured to substantially cover the rear V-shaped notch portion 1200B in the same manner as the front guard 1210F.

  Further, the upper edge 1210BU of the flat plate portion of the rear guard 1210B (see FIG. 5C) is fixed to the holder holding frame 1013, and the rear upper edge 1011BU of the pair of left and right hoppers (FIG. 5 ( It is configured so as to be the same height as the reference a). That is, the upper end edge portion 1210BU of the rear guard 1210B is configured to be lower than the heights of the left and right upper end portions 1210BL and 1210BR of the rear guard 1210B in the rear view.

  The front guard 1210F and the rear guard 1210B are elastic or resin plate members.

  By providing the front guard 1210F and the rear guard 1210B, when the take-out device 200 supplies the seedling 22 to the planting tool 11, the seedling 22 is planted from the front V-shaped notch 1200F or the rear V-shaped notch 1200B. It is possible to prevent the seedling 22 from being dropped out of the attachment 11 or caught in the front V-shaped notch 1200F or the rear V-shaped notch 1200B, and the transplanting accuracy of the seedling is improved.

  In addition, the upper edge portion 1210BU of the rear guard 1210B has the same height as the rear upper edge portion 1011BU (see FIG. 5A) of the pair of left and right hopper portions or lower than the upper edge portion. Since the height of 1210BU is configured to be lower than the heights of the left and right upper end portions 1210BL and 1210BR of the rear guard 1210B in the rear view, when the take-out device 200 supplies the seedling 22 to the planting tool 11, the seedling A part of 22 can be prevented from coming into contact with the upper edge 1210BU of the rear guard 1210B, and the seedling 22 can be accurately fed into the hopper without being damaged.

  Next, the operation timing of the extraction member 260, the planting tool 11, the tray supply device 100, and the tray feed rod 121 will be described with reference mainly to FIG.

  FIG. 6 shows the operation timing of the extraction member 260, the operation of the planting tool 11, and the operation timing of the lateral feed operation of the seedling table 110 of the tray supply apparatus 100, and the operation of the extraction member 260, the operation of the planting tool 11, FIG. 5 is a diagram illustrating the operation timing of the vertical feed operation of the tray feed rod 121 of the tray supply device 100.

  The vertical feed operation is an operation that is executed when the seedling placing stand 110 moves to the extreme left and right end and the seedling 22 of the last seedling pot 21 is extracted.

  The horizontal axis in FIG. 6 is based on the rotation angle of various drive arms from the horizontal direction. For example, in the case of the take-out member 260, the rotation angle of the drive arm 220 (see FIG. 7), the rotation angle of the vertical movement arm 320 (see FIG. 9) in the case of the planting tool 11, the vertical angle by the tray supply device 100. In the case of feed, the rotation angle of the longitudinal feed drive arm 150 (see FIG. 8) is used as a reference.

  As shown in FIG. 6, according to the operation timing 2210 of the extraction claw, the seedling transplanter 1 according to the present embodiment, at timing P2, the extraction member 260 comes out while holding the seedling 22 from the inside of the breeding pot 21, Release of the seedling 22 to the planting tool 11 is started before the timing P3, the release of the seedling 22 is terminated at the timing P3, and then the inside of the adjacent seedling pot 21 is entered at the timing P4. After grasping the seedling 22, it is configured to come out of the inside of the seedling pot 21 (see timing P2 in FIG. 6).

  Also, as shown in FIG. 6, according to the operation timing 2220 of the planting tool, the seedling transplanter 1 of the present embodiment stops the descending operation of the planting tool 11 at the timing P3 slightly lower than the top dead center. After that, it is configured to reach the bottom dead center at timing P4.

  Here, at the timing P3 when the planting tool 11 stops the descending operation, the operation of the take-out member 260, the lateral feed operation of the tray supply device 100 (ie, the operation of the seedling table 110) and the vertical feed operation (ie, the tray feed rod). The operation related to the planting operation including the operation 121) is stopped at the same time, so that the planting operation can be performed intermittently and adjustment between the planting stocks is possible. In addition, the stop period of these operations is configured to be settable by the operation unit 600 (see FIG. 11) from 0 seconds to a predetermined period depending on the desired planting stock.

  A configuration for intermittently realizing the planting operation is realized by the planting clutch 420, the intermittent cam 441, the solenoid 470, and the like in the seedling planting device drive mechanism 400. This will be described later with reference to FIG. To do.

  Further, as shown in FIG. 6, according to the operation timing 2230 of the transverse feeding operation in the seedling table 110 of the tray supply device 100, the seedling transplanter 1 of the present embodiment has the takeout member 260 rushing into the seedling pot 21. During the operation, that is, from timing P4 to P2, the horizontal feeding operation for one seedling pot 21 is stopped, and at the timing P3 when the planting operation of the planting tool 11 is stopped, the seedling is raised. In the middle of the horizontal feeding operation for one pot 21, the horizontal feeding operation is also stopped at the same time.

  Further, as shown in FIG. 6, according to the operation timing 2240 of the vertical feed operation in the tray feed rod 121 of the tray supply device 100, the seedling transplanting machine 1 of the present embodiment has the above-described tray feed rod 121 in a side view. In the operation of drawing a substantially square locus A (see FIG. 8), the tip of the tray feed rod 121 comes out from the gap 21a (see FIG. 8) between the adjacent seedling pots 21 on the back side of the tray 20. (See arrow 121a1 in FIG. 8), move upward (see arrow 121a2 in FIG. 8), and again enter the gap 21b (see FIG. 8) between the next seedling pots 21 (see arrow 121a3 in FIG. 8). The return operation up to is started after the extraction member 260 has entered the inside of the seedling pot 21, and the extraction member 260 comes out of the inside of the seedling pot 21 (timing in FIG. 6). 2 reference) was just completed, starts the longitudinal feed operation at timing P2, is completed constitutes the longitudinal feed operation at timing P3.

  In FIG. 6, for the purpose of facilitating understanding, the tray feed rod 121 is moved into the seedling pot by the operation timing 2250 with the same content as the operation timing 2240 of the vertical feed operation in the tray feed rod 121 of the tray supply device 100 described above. It is shown from the viewpoint of whether it is in the groove part between 21 or has come out.

  With the above configuration, during the return operation of the tray feed rod 121 (see timings P1 to P2 in FIG. 6), since the takeout member 260 has entered the seedling pot 21, the tray 20 is pressed by the takeout member 260. Therefore, the tray 20 can be prevented from shifting downward on the tray conveyance path 111.

  In addition, with the above configuration, when the planting operation of the planting tool 11 is stopped by intermittent planting, the vertical feed operation of the tray 20 by the tray feed rod 121 is completed (see timing P3 in FIG. 6). The tray feed rod 121 can reliably hold the tray 20 in a stopped state in intermittent planting, and the tray 20 can be prevented from shifting downward on the tray conveyance path 111.

  That is, in the intermittent planting stop state, as described above, the members related to the planting operation stop simultaneously, so that the tray 20 is likely to be displaced due to vibration or the like due to traveling of the airframe, but in this embodiment, the tray 20 The vertical feed operation of the tray 20 by the feed rod 121 has been completed, and the tray feed rod 121 is stopped in a state where it remains in the gap 21a (see FIG. 8) between the adjacent seedling pots 21, The tray feed rod 121 can reliably hold the tray 20.

  In addition, with the above configuration, while the take-out member 260 enters the inside of the seedling pot 21, the tray transport path moving device 170 does not perform the lateral feeding operation of the seedling table 110 of the tray supply device 100, and is intermittent. When the planting operation of the planting tool 11 is stopped by the planting operation (see timing P3 in FIG. 6), one seedling pot 21 of the seedling table 110 of the tray supply device 100 by the tray transport path moving device 170 is used. Since it is in the middle of the horizontal feed operation, the horizontal feed for one seedling pot 21 of the tray 20 can be operated slowly and with sufficient margin at a timing that does not hinder the seedling extraction operation, and the accuracy of the horizontal feed can be improved. improves.

  Further, in the present embodiment, while the tray feed rod 121 is performing the return operation, the tray transport path moving device 170 does not perform the lateral feed operation of the seedling table 110 of the tray supply device 100. This is because, while the tray feed rod 121 is returning to move the next horizontal row of seedling pots 21 downward, the horizontal feed operation (in this case, the seedling table 110 moves to the extreme end). Therefore, if the holding of the tray 20 is not stable while the tray feeding rod 121 is returning, the lateral feeding operation will be performed. This is because the tray 20 may be displaced by the lateral feed operation of the tray supply device 100 by the tray transport path moving device 170. Thereby, in this Embodiment, it can prevent that the tray 20 slip | deviates by the horizontal feed operation | movement of the tray supply apparatus 100 by the tray conveyance path moving apparatus 170. FIG.

  Moreover, according to the seedling transplanting machine 1 of the present embodiment, the tray 20 can be realized with a stable vertical feed that is not easily displaced, and a tray supply device 100 including a vertical feed mechanism different from the conventional one can be provided. The degree of freedom of design increases.

  Next, the tray supply apparatus 100 described above will be further described mainly with reference to FIGS. 7 (a), 7 (b), and 8. FIG.

  FIG. 7A is a perspective view of the tray supply device 100, and FIG. 7B is an enlarged perspective view of a portion X in FIG. 7A. FIG. 8 is a schematic side view illustrating the configuration of the tray vertical feeding device 120 of the tray supply device 100.

  The tray 20 is formed by connecting a plurality of seedling pots 21 vertically and horizontally, is formed of plastic, and is configured to retain flexibility. Each seedling pot 21 is connected on the front surface side, and the back surface is in an independent form.

  The tray supply device 100 includes a seedling table 110 having a tray conveyance path 111 inclined downward to support the bottom of the tray 20, and a tray vertical feeding device that intermittently feeds the tray 20 in the vertical direction along the tray conveyance path 111. 120 and a tray transport path moving device 170 (see FIG. 2) for moving the seedling table 110 having the tray transport path 111 in the left-right direction.

  In addition, as described above, the tray supply device 100 is provided with the tray detection device 1100 for detecting that the tray 20 is not placed on the tray conveyance path 111.

  Here, the configuration and operation of the tray detection apparatus 1100, which is one of the characteristics of the seedling transplanter 1 of the present embodiment, will be described with reference to FIGS.

  That is, as shown in FIGS. 2 and 7, the tray detection device 1100 has a tray detection member 1110 that is rotatably arranged at a substantially central portion of the tray conveyance path 111 and an outer side surface on both the left and right sides of the seedling table 110. A pair of left and right interlocking arms 1120L and 1120R that are arranged and rotate in conjunction with the rotation of the tray detection member 1110, a connecting shaft 1130 that connects the tray detection member 1110 and the pair of left and right interlocking arms 1120L and 1120R, and a tray A pair of left and right limiter switches 1140L and 1140R are provided on the inner surfaces of the left and right side portions 172L and 172R of the transport path moving device 170, respectively, at positions corresponding to the pair of left and right interlocking arms 1120L and 1120R. Signal lines (not shown) of the pair of left and right limiter switches 1140L and 114R are connected to the control unit 800 (see FIG. 13).

  When the tray 20 is not supplied on the tray conveyance path 111 or when the rear end portion of the tray 20 passes the position of the tray detection member 1110, the tray detection member 1110 is a spring member (not shown). Is omitted toward the front side from the substantially central portion of the tray conveyance path 111, but when the tray 20 is supplied onto the tray conveyance path 111, the back surface of the tray 20 is attached to the spring member. Since the tray detection member 1110 is pressed by a force that opposes the restoring force, the tray detection member 1110 rotates counterclockwise when viewed from the left side.

  As a result, the tray detection member 1110 rotates clockwise or counterclockwise in accordance with the presence or absence of the tray 20, and the pair of left and right interlocking arms 1120L and 1120R rotate in conjunction therewith.

  In a state where the tray 20 does not exist in the central portion on the tray conveyance path 111, the tray detection member 1110 rotates clockwise as viewed from the left side and faces from the opening at the substantially central portion of the tray conveyance path 111 to the front side. At the same time, the pair of left and right interlocking arms 1120L and 1120R rotate clockwise in conjunction with this and stop at a predetermined position. When the seedling table 110 is laterally fed and reaches the inner surface of either of the left and right side portions 172L and 172R of the tray transport path moving device 170, the pair of left and right interlocking arms 1120L or 1120R is moved to the pair of left and right limiter switches 1140L. Alternatively, a signal indicating that the tray 20 does not exist at a substantially central portion on the tray conveyance path 111 is sent to the control unit 800 when it hits the movable portion 1141L or 1141R of 1140R. Upon receiving the signal, the control unit 800 sounds an alarm buzzer (not shown) arranged on the operation unit 600 (see FIG. 11).

  The alarm buzzer is configured to sound for a certain time (several seconds) after the movable part 1141L or 1141R of the pair of left and right limiter switches 1140L or 1140R is pressed, and then the alarm sound of the alarm buzzer automatically stops.

  In addition, the certain time is set to be equal to or longer than the time when the seedling table 110 moves from end to end, and each time the movable unit 1141L or 1141R of the pair of left and right limiter switches 1140L or 1140R is pressed, the certain time is counted. Is reset, a signal from the newly pressed limiter switch 1140L or 1140R is received, and the count for a predetermined time is newly started, so that the alarm sound is stopped until the tray 20 is supplied. It can be set as the structure which rings continuously without.

  As described above, the pair of left and right limiter switches 1140L and 1140R are attached to the left and right side portions 172L and 172R of the tray transport path moving device 170, which is a fixed portion that does not move to the left and right. The signal wiring (not shown) extending from can be securely fixed, and disconnection can be prevented.

  Further, since the alarm buzzer automatically stops when a warning sound is generated for a certain time, it is not necessary to provide a stop switch.

  In the above embodiment, the configuration in which the alarm buzzer sounds for a certain period of time has been described. However, the configuration is not limited thereto. For example, when the tray detection device 1100 detects the absence of the tray 20, the horizontal row of the tray 20 is linked with the solenoid 470. For example, the alarm buzzer may sound 10 times according to the number of the seedling pots 21 arranged in the above.

  In the above embodiment, the configuration in which the alarm buzzer sounds for a certain period of time has been described. However, the present invention is not limited to this. For example, when the tray detection device 1100 detects the absence of the tray 20 twice in succession, it continues for several seconds. The alarm buzzer may sound or the alarm buzzer may sound longer in conjunction with the solenoid 470 each time the absence of the tray 20 is detected.

  According to the said structure, since the residual amount of a seedling is known by the sound of an alarm buzzer, the tray 20 can be replaced with a margin.

  Moreover, according to the said structure, there exists an effect that it can judge the seedling reduction degree and the seedling residual quantity degree by operating an alarm for every intermittent planting operation interlocked with the operation of the solenoid 470.

  Here, the description returns to the tray vertical feeding device 120 of the tray supply device 100 again.

  The tray vertical feeding device 120 enters between the seedling pots 21 protruding from the back side of the tray 20 to the back side, and moves downward to feed the tray 20 by one horizontal row of the seedling pot 21, The tray feed rod 121 is configured to move out from between the seedling pots 21 and move upward by the horizontal row of the seedling pots 21. The tray feed rod 121 is configured such that a central portion 121a can enter and exit from a retreat groove 111a provided at a lower portion of the tray conveyance path 111, and both end portions 121b are bent at a right angle so as to be outside of both sides of the tray conveyance path 111. The configuration is such that the tray 20 does not get in the way when the tray 20 moves on the tray conveyance path 111.

  Further, the tray supply device 100 includes a pair of left and right rod guide plates 112 for restricting the movement of the tray feed rod 121 on the end surface portions on both sides of the tray conveyance path 111 on the downstream side of the retreat groove 111a. Yes. At the upper end edge of the rod guide plate 112, a notch 112a into which a protrusion 121ab projecting downstream at both ends of the central portion 121a of the tray feed rod 121 can enter is formed (FIG. 7B). reference).

  That is, the notch portion 112a is temporarily formed between the center portion 121a of the tray feed rod 121 until the center portion 121a of the tray feed rod 121 moves downward and then comes out from between the seedling pots 21. The protrusions 121ab at both ends are held and the tray 20 is prevented from moving downward due to the weight of the seedlings 22 placed in the seedling pot 21. The trajectory of the central portion 121a of the tray feed rod 121 will be described later with reference to FIG.

  Further, the tray transport path moving device 170 is provided on the back side of the tray transport path 111 and obtains a driving force from the main body side of the seedling transplanter 1 to move the seedling table 110 having the tray transport path 111 in the left-right direction. A lead cam shaft 171, a guide rail 155 that is provided above the lead cam shaft 171 and guides the movement of the seedling table 110 having the tray conveyance path 111 in the left-right direction, and both left and right side portions 172 </ b> L that hold the guide rail 155 on both the left and right sides , 172R.

  Further, the tray transport path 111 is supported by a lead cam shaft 171 and a guide rail 155 that guides left and right movement provided on the inner upper side of the tray transport path 111. As a result, the guide rail 155 supports the tray conveyance path 111 at a position away from the lead cam shaft 171, so that there is little backlash when moving in the left-right direction.

  When the tray 20 is inserted from above the seedling mount 110 so as to be sandwiched between the tray conveyance path 111 and the presser frame 25, the tip of the tray feed rod 121 is engaged with the groove on the back side of the tray 20. In this state, the tray feed rod 121 rotates while drawing a substantially square locus A in a side view, whereby the tray 20 is intermittently fed vertically downward along the tray conveyance path 111.

  A mechanism for intermittently feeding the tray 20 intermittently using the tray feed rod 121 will be described later.

  Further, in the present embodiment, the tray 20 is sequentially vertically fed along the tray conveyance path 111 and the seedlings 22 are all taken out by the take-out member 260, and then pass below the tray vertical feed device 120 and finally. In particular, it is configured to pass above the operation unit 600 and be discharged in the direction of the operation handle 8 (see the discharge path 20t in FIG. 1), and this point will be described.

  That is, as shown in FIGS. 1 and 2, the main clutch lever 900 is disposed at the tip of the discharge path 20t through which the tray 20 is discharged. When the main clutch lever 900 is operated forward, the main clutch is “on”. When the operation is performed rearward (see the arrow 900B in FIG. 1), the main clutch enters the “disengaged” state.

  The tray 20 discharged in the direction of the operation handle 8 is normally removed by an operator. However, even if the operator neglects the removal operation of the tray 20 that has been discharged, in this embodiment, the tray 20 is discharged. When the main clutch lever 900 is pushed backward by the leading end of the tray 20 (see arrow 900B in FIG. 1), the planting operation is automatically stopped for safety. is there.

  By the way, the take-out device 200 is arranged at a position facing the lower end of the seedling table 110, and the tip of the take-out member 260 operates so as to draw a predetermined trajectory K (see FIG. 8) to move in the lateral direction. The seedling 22 is sequentially taken out from the seedling pot 21 to be supplied and supplied to the planting device 7.

  Next, with reference to FIGS. 7 and 8 again, the mechanism for intermittently driving the tray feed rod 121 of the tray supply apparatus 100 will be further described.

  As shown in FIG. 8, the tray vertical feeding device 120 has (1) the above-described tray feeding rod 121 and (2) the upper end portion 121b1 of both ends 121b of the tray feeding rod 121 fixed, and one side curved inward. A feed rod arm 130 having a projecting cam 131 having a curved edge portion 131a formed at the lower portion, and (3) a root portion 141 is rotatably supported by the side plate 110a of the seedling table 110, and a feed rod at the tip portion 142. A feed arm 140 that rotatably supports the arm 130 and has a first recess 143a, a second protrusion 143b, and a third recess 143c formed smoothly and continuously in a side view at the lower edge, and (4) a seedling The longitudinal feed pivot shaft 151 that pivots in the direction of arrow E by the driving force obtained from the power source of the transplanter 1 is viewed from the side of the take-out device 200, and is located at two locations, the center position and the right end position of the longitudinal feed pivot shaft 151. Respectively fixed, provided with a longitudinal feeding drive arm 150 having a restraining roller 152 rotatably to the tip portion.

  Further, a feed arm tension spring 160 is attached between the front end portion 142 of the feed arm 140 and the lower portion 110a1 of the side plate 110a of the seedling table 110 so that a downward pulling force is always applied to the feed arm 140. ing. Further, a spring mounting rod 163 that holds the other end of the feed rod arm tension spring 161 having one end attached to the pin 132 attached to the upper end portion of the feed rod arm 130 is fixed to the root portion 141 of the feed arm 140. Has been.

  Next, the intermittent operation of the tray feed rod 121 will be described with reference to FIGS.

  It is assumed that the seedling table 110 is moved in the right direction, that is, in the direction of arrow F (see FIG. 7) by the rotation of the lead cam shaft 171. At that time, the longitudinal feed rotation shaft 151 is rotated in the direction of arrow E (see FIG. 8).

  In the meantime, the take-out device 200 sequentially takes out the seedlings 22 from the seedling pot 21 at the right end and supplies the seedlings 22 to the planting device 7, and then the leftmost end when the seedling placement stand 110 moves to the rightmost end. The seedling 22 of the nursery pot 21 is taken out by the take-out device 200. Thereby, all the seedlings 22 for one horizontal row of the seedling pot 21 are taken out.

  At this time, it is rotatably attached to the front end portion of the vertical feed drive arm 150 which is rotated in the direction of arrow E together with the vertical feed rotary shaft 151 and which is fixed to the right end of the vertical feed rotary shaft 151. Since the check roller 152 is configured to start contact with the curved edge portion 131a of the feed rod arm 130 after a short delay after the contact with the first recess 143a of the feed arm 140 is started, the tray feed rod 121 is After the feed arm 140 has once moved upward with the clockwise rotation of the feed arm 140, it starts to rotate counterclockwise around the axis of the tip end portion 142.

  That is, when the tray feed rod 121 is once moved upward in the direction of the arrow 121a0 (see FIGS. 7B and 8), the protrusion 121ab of the tray feed rod 121 that has been held by the notch 112a until then. However, the center portion 121a of the tray feed rod 121 that has been waiting in the gap 21a on the back side of the seedling pot 21 is also moved upward in the direction of the arrow 121a0 within the range of the gap 21a. . Thereafter, the feed rod arm 130 starts to rotate counterclockwise about the axis of the tip end portion 142, whereby the central portion 121a of the tray feed rod 121 moves in the direction of the arrow 121a1 (see FIG. 8). In addition, the notch depth of the notch part 112a is set to such an extent that the center part 121a of the tray feed rod 121 can move within the range of the gap 21a.

  Thereafter, when the check roller 152 continues to rotate, the check roller 152 continues to contact the curved edge portion 131a of the feed rod arm 130, so that the central portion 121a of the tray feed rod 121 is positioned in the retreat groove 111a. Maintained. At this time, the check roller 152 simultaneously moves from the first concave portion 143a of the feed arm 140 toward the second convex portion 143b, so that the feed arm 140 further rotates clockwise, and the central portion 121a of the tray feed rod 121 is As a result, it moves in the direction of the arrow 121a2 (see FIG. 8) while maintaining the state positioned in the retreat groove 111a.

  Thereafter, when the check roller 152 continues to rotate, the check roller 152 is not in contact with the curved edge portion 131a of the feed rod arm 130, and at the same time, the feed rod arm 130 is moved by the restoring force of the feed rod arm tension spring 161. The central portion 121a of the tray feed rod 121 is instantaneously rotated clockwise about the axis of the tip portion 142, so that the arrow 121a3 is directed from the gap 21a toward the gap 21b located on the upper side by one row of the seedling pot 21. Move as shown in.

  Thereafter, when the check roller 152 continues to rotate, the check roller 152 moves while being in contact with the third recess 143 c of the feed arm 140, so that the feed arm 140 is moved downward by the restoring force of the feed arm tension spring 160. As a result, the central portion 121a of the tray feed rod 121 moves in the direction of the arrow 121a4 (see FIG. 8) while maintaining the state of being positioned in the gap 21b. The protrusion 121ab of 121a is held by the notch 112a.

  And the center part 121a of the tray feed rod 121 moved in the direction of the arrow 121a4 (see FIG. 8) maintains the state of being positioned in the gap between the seedling pots on the back side of the seedling pot 21, and the seedling stand 110 is When the movement starts in the arrow G direction, that is, the left direction, the takeout device 200 sequentially takes out the seedlings 22 from the seedling pot 21 at the left end and supplies the seedlings 22 to the planting device 7. The seedling 22 of the rightmost breeding pot 21 is taken out by the take-out device 200 at the time of moving to. Thereby, all the seedlings 22 for one horizontal row of the seedling pot 21 are taken out.

  During this time, the projection 121ab of the central portion 121a of the tray feed rod 121 is held by the notch 112a, so that the tray 20 moves downward due to the weight of the seedling 22 placed in the seedling pot 21. Can be prevented.

  In addition, when all the seedlings 22 for one horizontal row of the seedling pot 21 are taken out, unlike the above, it can be freely rotated at the front end portion of the vertical feed driving arm 150 fixed to the center position of the vertical feed rotary shaft 151. The attached check roller 152 starts contact between the curved edge 131a of the feed rod arm 130 and the first recess 143a of the feed arm 140.

  By repeating the above-described operation, the tray 20 is moved rightward or leftward, and is intermittently vertically fed by one row of the seedling pot 21.

  Thereby, the tray vertical feeding device 120 having a compact structure is obtained. Further, the tray conveyance path 111 can be supported so as to be movable left and right with a simple structure of the guide rail 155 and the lead cam shaft 171.

  Further, since the central portion 121a of the tray feed rod 121 is disposed on the flat surface portion 111b of the tray conveying path 111, the tray 20 does not bend inward, so that a gap with a certain width is provided on the back side of the seedling pot 21. Since 21a and 21b can be secured, the tray feed rod 121 can surely enter the gaps 21a and 21b.

  Further, since the curved surface portion 111c is provided on the downstream side of the flat surface portion 111b of the tray conveyance path 111, the tray 20 bends along the curved surface. Therefore, even when the tray feed rod 121 is moving in the direction of the arrow 121a2 during tray feeding, the bending becomes resistance, and the tray 20 is prevented from shifting to the downstream side.

  Next, the seedling planting apparatus 300 and the seedling planting apparatus drive mechanism 400 described above will be further described with reference to FIGS. 9 and 10.

  FIG. 9 is a left side view of the seedling planting device 300 and the seedling planting device driving mechanism 400. FIG. 10 is a schematic left side view of the seedling planting device drive mechanism 400.

  As shown in FIG. 9, 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. 9, the seedling planting device 300 is rotatably 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. 9, the swing link mechanism 310 is supported by the front upper end portion 401a of the casing 401 housing the seedling planting device drive mechanism 400 so that the upper end is pivotally supported by the upper front shaft 313a, and the lower end is 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 the arrow A1. 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 connecting shaft 321 is fixed rotates in the direction of arrow A1 during the planting operation, the opening / closing cam 322 fixed to the first connecting 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. 10, 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.

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

  Further, as shown in FIG. 10, 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, and the planting clutch 420 is brought into the “on” state. Depending on whether the intermittent cam 441 having a concave portion 441a formed in a part of a circular outer peripheral edge for forcedly switching to the “cut” state and the one end portion 460a are separated from or in contact with the planting clutch 420 The first arm 460 having a substantially “h” shape in a side view, which is pivotally supported by a pivotal fulcrum 461, for switching between the engaged state and the disengaged state of the planting clutch 420. I have.

  Further, as shown in FIG. 10, the seedling planting device drive mechanism 400 sucks the other end 460 b of the first arm 460 in the direction of the arrow B <b> 1 through the movable plate 472 against the pulling force of the tension spring 480. Thus, the solenoid 470 that rotates the one end portion 460a of the first arm 460 around the rotation fulcrum 461 in the direction of the arrow C1 to switch the planting clutch 420 from the “disengaged” state to the “entered” state. In addition, a mounting adjustment long hole 471a capable of adjusting the mounting position of the solenoid 470 is provided so that the suction force of the solenoid 470 effectively acts on the switching operation of the planting clutch 420 to the “ON” state. , A solenoid fixing plate 471 fixed at a lower position of the casing 401, and one end portion 462 at the rotation fulcrum 461 of the first arm 460. There are fixed, the other end portion in conjunction with the operation of the first arm 460 462b is provided with a second arm 462 that abuts the outer peripheral edge portion of the intermittent cam 441, a.

  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.

  According to the above configuration, the intermittent clutch 441 provided on the downstream side of the transmission of the planting clutch 420 can be used to change the planting clutch 420 from the “on” state to the “disconnected” state. A planting mechanism can be realized.

  Further, the first arm 460 and the second arm 462 are configured to rotate integrally around the rotation fulcrum 461, and the rotation fulcrum 461 is more intermittent than the transmission shaft 421 of the planting clutch 420. By arranging on the side, the first arm 460 and the second arm 462 can be rational and compact.

  In addition, by arranging the solenoid 470, which is a heavy object, below the casing 401, the center of gravity of the seedling transplanter 1 can be lowered.

  Next, with reference to FIG. 10, the items A to B are centered on the operation of the planting clutch 420 and the intermittent cam 441 for turning on and off the transmission to the vertical movement arm drive shaft 440 in the seedling planting device drive mechanism 400. Each of the three scenes of C will be explained.

  A. When the solenoid 470 is energized (a short time energization by a pulse signal), the movable plate 472 at the tip of the solenoid 470 is attracted in the direction of the arrow B1 against the pulling force of the tension spring 480, and the first arm 460 is drawn. One end portion 460a and the other end portion 462b of the second arm 462 rotate in the counterclockwise direction (see arrow C1 in FIG. 10) about the rotation fulcrum 461.

  Thus, the following operations i) and ii) are performed when the one end 460a of the first arm 460 is separated from the planting clutch 420.

  i) When the planting clutch 420 is in the “engaged” state and the transmission shaft 421 rotates, a driving force is transmitted to the second gear 430 side, and the vertical movement arm drive shaft 440 is transmitted via the third gear 450. Ii) the other end 462b of the second arm 462 moves away from the recess 441a formed in the outer peripheral edge of the intermittent cam 441 (until this time, the other end 462b of the second arm 462). Is located in the recess 441a of the intermittent cam 441, and the planting clutch 420 is in the “disengaged” state, and the vertical movement arm drive shaft 440 stops rotating), along the convex outer peripheral edge 441b. However, the intermittent cam 441 and the vertical movement arm 320 continue to rotate.

  That is, the energization to the solenoid 470 has already been stopped and the suction force to the arrow B1 is not generated, but the other end 462b of the second arm 462 is connected to the convex outer peripheral edge 441b of the intermittent cam 441. Since the one end portion 460a of the first arm 460 is away from the planting clutch 420 while the along state is maintained, the planting clutch 420 can maintain the “on” state and move up and down. The planting tool 11 (see FIG. 9) continues to move up and down (planting operation) by the rotation of the arm 320, and the planting tool 11 is planted only once until the intermittent cam 441 rotates once. Perform the action.

  B. Thereafter, when the intermittent cam 441 makes one rotation and the other end 462b of the second arm 462 reaches the recess 441a of the intermittent cam 441, the first arm 460 rotates clockwise by the tensile force of the tension spring 480. When the first arm 460 is in contact with the planting clutch 420, the following i) and ii) are performed.

  i) The planting clutch 420 is in a “disengaged” state, and the rotation of the transmission shaft 421 stops, so that the driving force is not transmitted to the second gear 430 side, so the vertical arm drive shaft 440 stops rotating. And ii) the other end 462b of the second arm 462 remains in the recess 441a formed on the outer peripheral edge of the intermittent cam 441 (until this time, the other end 462b of the second arm 462 is used for intermittent use. The planting clutch 420 is in the “engaged” state along the convex outer peripheral edge 441b of the cam 441, and the vertical movement arm drive shaft 440 continues to rotate)), the intermittent cam 441 and the vertical movement arm 320. Since the rotation continues to stop, the planting tool 11 (see FIG. 9) continues to stop the vertical movement (planting operation).

  C. Thereafter, when the solenoid 470 is energized at an arbitrary timing, the planting clutch 420 enters the “engaged” state, and the operation described in item A above is started.

  According to the said structure, the time which the vertical movement (planting operation | movement) of the planting tool 11 has stopped can be adjusted by controlling the said arbitrary timing which supplies with electricity to the solenoid 470. FIG. Thereby, intermittent planting is possible with a simple configuration.

  Next, the various operation levers and the operation unit 600 that are disposed in the vicinity of the pair of left and right handle grips 8L and 8R of the steering handle 8 will be described with reference to FIG. FIG. 11 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. 11, a main clutch lever 80 is provided in the vicinity of the left handle grip 8L of the steering handle 8, and an elevating operation lever 81 for operating the hydraulic elevating cylinder 10 is provided in the vicinity of the right handle grip 8R. Is provided.

  The raising / lowering operation lever 81 is configured to be manually switchable in three stages of “lowering”, “neutral”, and “raising”, and when switched to the “lowering” position, the hydraulic lifting cylinder 10 is to lower the traveling vehicle body 15. When the operation is stopped and the lowering is stopped by a sensor plate 710 (see FIG. 12), which will be described later, and the planting on / off button 620 (see FIG. 11), which will be described later, is in an ON state, the planting clutch 420 enters an “on” state. Planting work 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. 11, the operation panel 601 has, in order from the left end to the right end, (1) an empty planting operation button for operating only the planting tool 11 in a state where the traveling of the traveling vehicle body 15 is stopped. 610, and (2) when the lifting operation lever 81 is 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 is not interlocked with the lowering operation. A planting on / off button 620 that switches to any one of the states, (3) a display unit 630 that displays at least between planted strains, and (4) an adjustment button 640 that adjusts at least between planted strains are arranged.

  The multi-cut on / off switch 602 and the warning lamp 603 described above are arranged on the left side of the planting on / off button 620.

  Moreover, as above-mentioned, the adjustment button 640 can be used for temperature setting operation for setting the temperature of a multi-cut heater by operation of a changeover switch (illustration omitted) other than operation which adjusts between planting stocks. .

  In addition, as described above, the display unit 630 is configured to display the set temperature of the multi-cut heater or the temperature detected by the multi-cut heater temperature sensor 513 instead of the display between planted stocks.

  With the above configuration, the planting on / off button 620 is arranged 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. 12 and FIG. 13, a solenoid 470 that performs planting on / off based on operations of the planting depth adjusting mechanism 700, the planting on / off button 620, the lifting operation lever 81, and the like. The control unit 800 that controls the operation will be mainly described.

  FIG. 12 is a left side view illustrating a schematic configuration of the planting depth adjusting mechanism 700, and FIG. 13 is a schematic configuration diagram illustrating input / output to the control unit 800.

  As shown in FIG. 12, 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, and (2 ) 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.

  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. 13, the control unit 800 includes at least an on / off signal from the planting on / off button 620, a switching signal for the lifting operation lever 81, an on / off signal from the planting switch 770, and a multi-cut on / off switch 602. And the detection signal from the multi-cut heater temperature sensor 513 are inputted, and a pulse signal is outputted to the solenoid 470 by these input signals.

  As described above, the controller 800 is electrically connected to the multi-cut heater temperature sensor 513, the multi-cut on / off switch 602, and the warning lamp 603.

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

  Here, after moving the seedling transplanter 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 planter 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) Scenes where planting work is about to start:
When the seedling transplanter 1 is moved to a predetermined position in the field, the planting on / off button 620 is set to the “on” state, and the lifting operation lever 81 is set to the “up” position. Is in a high position.

  When the operator operates the elevating operation lever 81 to the “lower” position to lower the vehicle height of the traveling vehicle body 15, the sensor plate 710 is lowered together with the traveling vehicle body 15 toward the farm scene 701. Further, the operator sets the multi-cut on / off switch 602 to the “ON” state.

  When the sensor plate 710 comes into contact with the farm scene 701, the front end 711 of the sensor plate 710 rotates in the arrow Z direction, so that the front end edge 781b of the sensor rod 780 moves in the direction of pushing the on / off detection lever 771 and is planted. By turning on the switch 770, an ON signal from the planting switch 770 is input to the control unit 800.

  The control unit 800 transmits a signal indicating the “ON” state from the planting on / off button 620, a signal indicating the “DOWN” position from the elevating operation lever 81, an “ON” signal from the planting switch 770, and multi-cut ON / OFF. After receiving a signal indicating the “ON” state from the OFF switch 602 under the AND condition, the detected temperature of the multi-cut heater temperature sensor 513 is equal to or higher than the set temperature (or usable temperature). When the control unit 800 determines, 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.

(2) Scene of traveling while planting in the field:
Here, it is assumed that the raising / lowering operation lever 81 is in the “down” position, and the sensor plate 710 moves up and down according to the unevenness of the farm 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.

  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 the counter arm 760 moves in the direction of pushing the front edge of the long hole 762, the counter arm 760 rotates in the clockwise direction in FIG. 12 with the rotation support shaft 761 as the axis, and this movement is via the rod 765 and 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.

  During the planting operation, when the control unit 800 determines that the detected temperature of the multi-cut heater temperature sensor 513 is lower than the set temperature (or usable temperature), the control unit 800 transplants the solenoid 470 to the solenoid 470. The planting operation is stopped by performing control for restricting the output of a signal for setting the attached clutch 420 in the “ON” state. At the same time, a message for an emergency stop due to the temperature drop of the multi-cut heater is displayed on the display unit 630 and the warning lamp 603 is blinked.

(3) A scene of turning to the edge of the kite:
In this scene, the operator moves the lifting operation lever 81 from the “lower” 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. After receiving an “ON” signal from the planting switch 770 and a signal indicating the “ON” state from the multi-cut ON / OFF switch 602 under the AND condition, the multi-cut heater temperature sensor 513 further detects When the controller 800 determines that the temperature is equal to or higher than the set temperature (or usable temperature), 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.

  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.

(Embodiment 2)
In the second embodiment, another seedling transplanter according to an embodiment of the transplanter of the present invention will be described with reference to FIGS.

  In the present embodiment, the same components as those in the seedling transplanter 1 of the first embodiment will be denoted by the same reference numerals, and the description thereof will be omitted, and differences will be mainly described.

  That is, the seedling transplanter of the second embodiment includes a scraper device 1500 that drops mud and the like adhering to the inner surface of the second planting tool 2011 and a wheel scraper 1600 in synchronization with the vertical movement of the second planting tool 2011. The point provided with is different from the configuration of the first embodiment.

  FIG. 14 is a schematic side view illustrating the scraper device 1500.

  FIG. 15 is a schematic plan view for explaining the scraper device 1500.

  FIG. 16 is a schematic side view for explaining the operation of the scraper device 1500.

  As shown in FIGS. 14 and 15, the scraper device 1500 includes a pair of left and right hopper parts 1011 </ b> L and a right hopper whose front end side opens and closes in the left and right direction near the bottom dead center while moving up and down along a trajectory T <b> 1 (see FIG. 1). A rubber scraper 1510 that is disposed behind the portion 1011R and scrapes the inner wall surface to remove mud and the like attached to the inner wall surfaces of the pair of left and right hopper portions, and a scraper attachment for attaching the scraper 1510 to the lower end portion 1520a The upper end portion 1520b is connected to a scraper fulcrum shaft 1522 fixed to the frame 15a of the traveling vehicle body 15 so as to be rotatable in the front-rear direction. Scraper arm 1520, left hopper holder 1012L and right hopper holder 10 2R (see FIGS. 5 and 15) is a side surface fixed to the tip of a cam mounting pin 1531 erected outward from the left side surface of the holder holding frame 1013 that holds the fulcrum shaft 1013a as a center. And a scraper cam 1530 having a substantially half-moon shape.

  Further, a scraper arm tension spring 1550 having one end hooked to the upper end portion 1520b of the scraper arm 1520 and the other end hooked to the frame 15a of the traveling vehicle body 15 is disposed. Due to the contraction force of the arm tension spring 1550, a force to rotate counterclockwise in the left side view, that is, toward the rear side, is always acting with the scraper fulcrum shaft 1522 as the center of rotation.

  On the other hand, when the scraper arm 1520 is in the standard position (position when not scraped), the scraper arm 1520 hits the seedling tank frame 101 to stop the movement to rotate toward the rear side.

  Further, a scraper roller stay 1541 that rotatably holds a scraper roller 1540 at the tip end portion is fixed to the left side surface of the lower end portion 1520a and the upper end portion 1520b of the scraper arm 1520. The roller 1540 is disposed at a position in contact with the scraper cam 1530 at a predetermined timing.

  With the above configuration, the scraper fulcrum shaft 1522 is fixed to the upper frame 15a of the traveling vehicle body 15 in a side view, and is fixed to the front side of the scraper 1510 in a normal non-operating state in which the scraper 1510 is retracted rearward. Therefore, the scraper 1510 is higher in the normal non-operating state than in the scraper operating state, and is less likely to interfere with the planted seedling.

  Next, mainly with reference to FIG. 16, the operation of the scraper device 1500 will be described in association with the vertical movement of the distal ends of the pair of left and right hopper portions 1011L and 1011R of the second planting tool 2011.

  (1) After the 2nd planting tool 2011 has planted the seedling 22 in the field, the scene where the front-end | tip of a pair of right and left hopper parts 1011L and 1011R moves to the hopper 1st position T1a on locus | trajectory T1 is demonstrated.

  In this scene, the pair of left and right hopper portions 1011L, 1011R is in the ascending process with the tips open, and the scraper cam 1530 fixed via the cam mounting pin 1531 on the left side surface of the holder holding frame 1013 is the same. To rise.

  That is, when the scraper cam 1530 rises to the first cam position 1530a corresponding to the first hopper position T1a, the scraper roller of the scraper arm 1520 in which the tip of the scraper cam 1530 is located at the standard position. By contacting the rear side of the lower end surface of 1540, the scraper roller 1540 is moved forward, and the scraper arm 1520 starts moving forward (see arrow S in FIG. 16).

  (2) A scene in which the second planting tool 2011 continues to rise and the tips of the pair of left and right hopper portions 1011L and 1011R move to the hopper second position T1b on the trajectory T1 will be described.

  In this scene, the pair of left and right hopper portions 1011L and 1011R is in the ascending process with the tips thereof being open, and the scraper cam 1530 is similarly raised.

  That is, as the scraper cam 1530 rises to the cam second position 1530b corresponding to the hopper second position T1b, the arcuate surface in the side view of the front edge of the scraper cam 1530 becomes the rear of the scraper roller 1540. The scraper roller 1540 is further moved forward while contacting the end surface.

  At the same time, the scraper arm 1520 further moves to the front side (see arrow S in FIG. 16), and the scraper 1510 enters the inside through the gaps on the rear side of the pair of left and right hopper portions 1011L and 1011R.

  (3) Then, the second planting tool 2011 further rises, and the tips of the pair of left and right hopper portions 1011L and 1011R reach the hopper third position T1c on the trajectory T1 from the hopper second position T1b on the trajectory T1. The operation of the scraper 1510 in the process up to here will be described.

  In this process, as the scraper cam 1530 rises from the cam second position 1530b corresponding to the hopper second position T1b to the cam third position 1530c corresponding to the hopper third position T1c, the scraper cam 1530 The scraper 1510 moves slightly forward as shown in FIG. 16 because the arc-shaped surface having a relatively gentle curve in a side view of the front edge rises while contacting the rear end surface of the scraper roller 1540. In addition, substantially the same height is maintained inside the pair of left and right hopper portions 1011L and 1011R.

  However, since the second planting tool 2011 continues to move upward, the scraper 1510 can effectively scrape mud and the like adhering to the inner wall surfaces of the pair of left and right hopper portions 1011L and 1011R.

  (4) Then, when the second planting tool 2011 further rises and the tips of the pair of left and right hopper portions 1011L and 1011R pass through the hopper third position T1c on the trajectory T1, the scraper cam 1530 becomes the hopper third The cam moves to a position above the scraper roller 1540 at a third cam position 1530c corresponding to the position T1c. As a result, the scraper roller 1540 is released from contact with the scraper cam 1530, and the scraper arm 1520 is moved rearward at a stretch by the contraction force of the scraper arm tension spring 1550. It stops when it comes out of the inside of 1011L and 1011R and hits the seedling tank frame 101.

  Thereafter, the second planting tool 2011 closes the distal ends of the pair of left and right hopper portions 1011L and 1011R near the top dead center, moves on the trajectory T1, and repeats the operations (1) to (4).

  As a result, the scraper device 1500 including the scraper 1510 can be housed in a narrow space, the body can be made compact, the amount of movement of the scraper 1510 can be ensured, and the inner surfaces of the pair of left and right hopper portions 1011L and 1011R can be accurately obtained. Can scrape.

  Next, the wheel scraper 1600 will be described with reference to FIGS. 17 (a) to 17 (d).

  FIG. 17A is a schematic plan view showing a wheel scraper 1600 provided on the left front wheel 2, and FIG. 17B is a schematic left side view of the wheel scraper 1600 shown in FIG. It is.

  FIG. 17C is a schematic cross-sectional view when the wheel scraper 1600 shown in FIG. 17B is cut along a plane perpendicular to the axle 2a at the center position of the front wheel 2 in the left-right width direction. Only the wheel scraper 1600 is shown enlarged.

  FIG. 17D is a schematic enlarged view showing a modification of the fixed position of the wheel scraper 1600 for the left front wheel 2.

  As shown in FIGS. 17A and 17B, the wheel scraper 1600 is fixed to the axle stay 2b that rotatably supports the axle 2a of the front wheel 2 by a bolt 1601. The axle stay 2b is inclined obliquely upward and rearward with respect to a horizontal line 1610 passing through the axle 2a in a side view.

  As shown in FIG. 17A, the wheel scraper 1600 is a substantially U-shaped plate-like member in plan view, and is along the ground contact surface 2c of the tire of the front wheel 2 and its both ends bend toward the axle 2a. ing.

  Further, as shown in FIG. 17C, the wheel scraper 1600 is on the rear side of the front wheel 2, and the lower end portion 1602 of the wheel scraper 1600 is located above a horizontal line 1610 passing through the axle 2a in a side view. Arranged accordingly.

  Further, as shown in FIG. 17B, the wheel scraper 1600 is disposed in parallel to the upper end surface of the axle stay 2b in a side view.

  That is, as shown in FIG. 17C, a line segment in a side view showing the scraper working surface 1604 of the wheel scraper 1600 is relative to a straight line 1605 passing through the working end 1604a of the scraper working surface 1604 and the center of the axle 2a. Thus, the scraper action surface 1604 of the wheel scraper 1600 is arranged so as to be inclined rather than a right angle.

  This arrangement relationship is not limited to the range defined by the cross section shown in FIG. That is, at least in the range of the tire contact surface 2c (see FIG. 17A), if the tire contact surface 2c and the scraper action surface 1604 facing it are viewed as a set of polygonal planes, The polygonal plane facing the tire on the scraper working surface 1604 is arranged obliquely rather than parallel to the polygonal plane on the tire contact surface 2c facing the plane. As a result, the edge at the working end (see reference numeral 1604a in FIG. 17C) effectively acts on mud or the like adhering to the tire contact surface 2c.

  Thus, when the seedling transplanter 1 travels forward, the working end 1604a of the lower end 1602 of the wheel scraper 1600 disposed on the rear side of the pair of left and right front wheels 2 (within a predetermined interval within the wheel scraper 1600). The edge portion closest to the tire running surface 2c) can reliably scrape mud or the like adhering to the tire contact surface.

  In the above embodiment, the case where the wheel scraper 1600 is disposed on the rear side of the pair of left and right front wheels 2 has been described. However, the present invention is not limited to this. For example, as shown in FIG. 2 may be arranged on the front side. In this case, the upper end portion 1603 of the wheel scraper 1600 is disposed so as to be positioned below a horizontal line 1610 passing through the axle 2a in a side view.

  Thereby, the same effect as in the case of the arrangement shown in FIG.

  In the above embodiment, the configuration in which the wheel scraper 1600 is disposed on the front wheel 2 has been described. However, the configuration is not limited thereto, and for example, a configuration in which the wheel scraper 1600 is disposed on the rear wheel 3 may be used. 3 may be arranged in both.

  Moreover, in FIG.17 (c), the action | operation end part 1604a of the lower end part 1602 of the wheel scraper 1600 is located above the horizontal line 1610 which passes along the axle shaft 2a in a side view, and in FIG. The configuration has been described in which the working end portion 1604a of the upper end portion 1603 of the scraper 1600 is positioned below the horizontal line 1610 passing through the axle 2a in a side view. However, the present invention is not limited thereto, and in short, it is perpendicular to the axle 2a and In a side view of the longitudinal section passing through the central portion, a line segment representing a scraper action surface (see reference numeral 1604 in FIG. 17C) of a wheel scraper (see reference numeral 1600 in FIG. 17C) is a portion of the scraper action surface. (See reference numeral 1604a in FIG. 17 (c)) and the straight line (see reference numeral 1605 in FIG. 17 (c)) passing through the axle 2a so as to be inclined rather than perpendicular (see FIG. 17 (c)). 17 (c) in so as to form an obtuse angle), the scraper working surface may be even are arranged. Therefore, if a configuration example in that case is described for convenience with reference to FIG. 17C, the working end portion 1604a of the lower end portion 1602 of the wheel scraper 1600 is positioned on a horizontal line 1610 passing through the axle 2a in a side view. It may be located, or may be located below the horizontal line 1610 passing through the axle 2a.

  Moreover, in the said embodiment, the case where the lower link mechanism 524 of the punching apparatus 500 is comprised from two link members, the lower front link member 524-1 and the lower rear link member 524-2, is demonstrated. However, the present invention is not limited to this, and for example, as shown in FIG. 18A, the second lower link mechanism in the second drilling device 1700 may be configured by one link member. Here, FIG. 18A is a side view showing a schematic configuration of the second punching device 1700. Components having basically the same functions as those in FIGS. 3A and 3B are denoted by the same reference numerals, and description thereof is omitted.

  That is, as shown in FIG. 18A, the second punching device 1700 includes a punching tool 510 and a second vertical movement mechanism 1720 that moves the punching tool 510 up and down and in the front-rear direction in a stationary locus. ing.

  The second vertical movement mechanism 1720 includes a first cam 521, a second cam 522, and an upper link mechanism 523 that have basically the same functions as the components described in FIGS. 3 (a) and 3 (b). And a second front end portion 1724F is rotatably connected to a lower link shaft 524a fixed on the left outer surface of the planting transmission device 18 and below the drilling drive shaft 29. 2 a second lower link mechanism 1724 to which the rear end portion 1724B is attached so as to swing up and down, a rear end portion 523B of the upper link mechanism 523, and a second rear end portion 1724B of the second lower link mechanism 1724, A second connecting arm 1725 is provided which is swingably connected via an upper connecting shaft 523c and a second lower connecting shaft 1724c, and which is connected to a drilling tool 510 on the lower end side.

  The second lower connecting shaft 1724c fixed to the second rear end portion 1724B of the second lower link mechanism 1724 is movably connected along a long hole 1725a formed in the front-rear direction in the middle of the second connecting arm 1725. Has been. Further, a lower roller 526-1 is rotatably attached in the middle of the second lower link mechanism 1724, and an upper roller 526-2 is rotatably attached in the middle of the upper link mechanism 523. Further, a lower end portion of the lower link tension spring 527 is hung in the middle of the second lower link mechanism 1724, and an upper end portion of the lower link tension spring 527 is fixed to the upper link mechanism 523. It is hung on the pin 18b.

  That is, the lower link tension spring 527 is provided between the upper link mechanism 523 and the second lower link mechanism 1724, and the side on which the interval between the upper link mechanism 523 and the second lower link mechanism 1724 becomes narrower. It is the composition which is energized.

  The second lower link mechanism 1724 is formed with a plurality of holes 1724a, and the other side of the spring 1724b with one side hooked on the front upper end portion of the punching tool 510 with respect to any of the holes is provided. It is hung. Since the hole for hanging the other side of the spring 1724b is configured to be changeable, the swing amount of the hole punching tool 510 can be adjusted.

  With this configuration, the punching tool 510 can be moved up and raised after being lowered in a stationary locus. Thereby, a hole can be appropriately formed in the multi-film 19.

  In the above-described embodiment, the description has been given of the configuration in which the windproof cover 517 that covers the entire outer peripheral side surface of the electric heater unit 511 is fixed to the stay rod 515 and slides up and down together with the stay rod 515. For example, as shown in FIG. 18B, the left windproof cover 517L and the right windproof cover 517R are divided into two in plan view. The left windproof cover 517L has a left front windproof cover 517L-1 and a left rear windbreak cover 517L. The side windproof cover 517L-2 is configured to be pivotably connected in the direction of the arrow about the left rotation fulcrum 517La, and the right windproof cover 517R has a right front windproof cover 517R-1 and a right rear side. The windproof cover 517R-2 is connected to the right rotation fulcrum 517Ra so as to be rotatable in the direction of the arrow. The left windproof cover 517L and the right windproof cover 517R are disposed so as to be openable and closable at positions where the outer peripheral side surface of the electric heater 511 can be covered when the electric heater 511 moves to the top dead center. It is fixed on the 15 side. When the electric heater 511 descends from the top dead center (see the perforated stationary trajectory 500T in FIG. 3A), it mainly hits the inner wall of the left rear windbreak cover 517L-2 and the right rear windbreak cover 517R-2. When it comes out from the inside of the left windproof cover 517L and right windbreak cover 517R and rises past the bottom dead center and approaches the top dead center, the left rear windbreak cover 517L-2 and the right rear windbreak cover 517R are mainly used. -2 is pushed up and spread while coming into contact with the inner wall portions from below -2, and enters the left windproof cover 517L and the right windproof cover 517R. Thereby, cooling can be suppressed while the electric heater 511 is located at the top dead center. Here, FIG. 18B is a schematic plan view showing a configuration in which the windproof cover is divided into a left windproof cover 517L and a right windproof cover 517R.

  Further, in the above embodiment, a case has been described in which the front guard 1210F that covers the front V-shaped notch 1200F from the inside and the rear guard 1210B that covers the rear V-shaped notch 1200B from the inside are provided. For example, the front guard that covers the front V-shaped notch 1200F from the outside and the rear guard that covers the rear V-shaped notch 1200B from the outside may be provided. The V-shaped notch may be covered from the outside and the other V-shaped notched may be covered from the inside. Thereby, the volume in the hopper formed by the pair of left and right hopper portions 1011L and 1011R of the planting tool can be secured.

  In the above-described embodiment, a configuration has been described in which both the front V-shaped notch portion 1200F and the rear V-shaped notch portion 1200B are covered with the front guard and the rear guard. The structure which covers any one of the part 1200F or the back V-shaped notch part 1200B may be sufficient.

  Moreover, although the said embodiment demonstrated the case where the substantially V-shaped notch part was provided in the end surface part mutually opposed of the hopper part divided into right and left, it is not restricted to this, For example, The shape of the notch may be any shape such as a substantially U shape, a substantially long hole shape, a substantially rectangular shape, or a substantially rhombus shape.

  Further, in the above-described embodiment, the front end surface portion of the hopper portion divided into two on the left and right sides is notched with both the right hopper portion and the left hopper portion, and In the rear end surface portion of the hopper portion divided into two, the description has been given of the case where the notch portions are formed in both the right hopper portion and the left hopper portion, but not limited thereto, for example, In the front end face part of the hopper part divided into two on the left and right sides, a notch is formed in one of the right hopper part and the left hopper part, and divided into two on the left and right A configuration in which a notch portion is formed in one of the right hopper portion and the left hopper portion in the rear end surface portions of the hopper portions that face each other may be used.

  In the above-described embodiment, the front and rear end surfaces where the left hopper portion 1011L and the right hopper portion 1011R face each other have a substantially V-shaped front V-shaped notch portion 1200F and a substantially V-shaped shape. Although the configuration in which the rear V-shaped notch portion 1200B is provided has been described, the present invention is not limited to this, and for example, a substantially V-shaped notch portion is provided on one of the front and rear end surfaces. It may be a configuration.

  Moreover, in the said embodiment, although the taking-out apparatus 200 took out the seedling from the seedling pot 21 of the tray 20, and supplied to the planting tool and planted in the field, it demonstrated, but it was not restricted to this. For example, an operator puts seedlings into a plurality of pots provided on a rotary table by hand, and the seedlings are dropped by opening and closing a lid provided at the bottom of the pot and supplied to a planting tool. The present invention is also applicable to certain types of seedling transplanters.

  Moreover, in the said embodiment, the return operation | movement of the tray feed rod 121 is started after the extraction member 260 rushes into the seedling pot 21, and is completed immediately before the extraction member 260 comes out of the seedling pot 21. However, the present invention is not limited to this. For example, the return operation of the tray feed rod 121 is started and completed in any period from when the take-out member 260 enters the inside of the seedling pot 21 until it comes out. All you have to do is

  Moreover, although the said embodiment demonstrated the structure which performs the planting operation | movement of the planting tool 11 intermittently, it is not restricted to this, For example, the structure which plants a seedling between stocks of a fixed space | interval may be sufficient.

  In the above embodiment, seedlings such as vegetables have been described as transplants. However, the present invention is not limited to vegetables, and any transplants that can be taken out by a take-out device and planted in a field with a planting tool. Also good.

  Moreover, although the said embodiment demonstrated the structure which displays the detection temperature of the multi cut heater temperature sensor 513 on the display part 630, it is not restricted to this, For example, a multi cut heater is set temperature (or usable temperature). The time required to reach () may be displayed on the display unit 630. In the case of this configuration, after the multi-cut on / off switch 602 is turned on, the time required until the multi-cut heater reaches the set temperature (or usable temperature) instead of the inter-strain setting display. May be displayed with priority.

  Moreover, in the said embodiment, between the planting stocks as a display place of the detection time of the multi-cut heater temperature sensor 513 or the time required until the multi-cut heater reaches the set temperature (or usable temperature). Although the structure which also uses the display unit 630 to display has been described, the present invention is not limited to this. For example, the detection temperature of the multi-cut heater temperature sensor 513 or the multi-cut heater is set separately from the display unit 630 that displays between planted stocks. A configuration may be provided in which a dedicated display device (not shown) that displays the time required to reach the temperature (or a usable temperature) is provided.

  Moreover, in the said embodiment, in addition to the display between planting stocks, the time required until the temperature detected by the multi-cut heater temperature sensor 513 or the multi-cut heater reaches the set temperature (or usable temperature). However, the present invention is not limited to this. For example, the detection temperature of the multi-cut heater temperature sensor 513 and the time until the multi-cut heater reaches a set temperature (or usable temperature) are described. It may be configured to display both the required times.

  Further, in the above embodiment, when the temperature of the multi-cut heater detected by the multi-cut heater temperature sensor 513 does not reach the set temperature (or usable temperature), the control unit 800 detects that the multi-cut heater is abnormal. In the case where it is detected, the control unit 800 has been described with respect to the configuration for stopping the planting operation. However, the present invention is not limited to this, and for example, a sensor that detects the current value of the multi-cut heater is provided, When the control unit 800 determines that the value is less than the value, a message to that effect may be displayed on the display unit 630, and the warning lamp 603 may blink to stop the planting operation. In this configuration, the current value detected by the sensor that detects the current value of the multi-cut heater may be displayed on the display unit 630. By determining the abnormality of the current value and stopping the planting operation, it is possible to prevent the planting operation from being re-executed due to poor perforation of the multi film 19. Also, by displaying the current value of the multi-cut heater, the operator himself can notice the failure and deterioration of the multi-cut heater at an early stage, enabling early replacement of parts and improving work efficiency. I can plan.

  In the above-described embodiment, the configuration in which the scraper 1510 is fixed to the scraper mounting portion 1521 of the scraper arm 1520 has been described. However, the present invention is not limited to this. For example, FIG. 19A and FIG. The structure which is divided | segmented into right and left and each is attached to the scraper attachment part so that rotation is possible may be sufficient. Note that, in FIG. 19A, the same reference numerals are given to components that perform basically the same functions as the components described in FIG. 14, and descriptions thereof are omitted. Here, FIG. 19A is a perspective view of a left-turning scraper 1510L and a right-turning scraper 1510R that are divided into left and right and are respectively attached to a scraper mounting portion 1521 so as to be rotatable. (B) is a schematic rear view showing a pair of left and right over-opening stoppers 1511L and 1511R formed on the left-turning scraper 1510L and the right-turning scraper 1510R.

  That is, in this case, as shown in FIG. 19A, a substantially semicircular left-turn scraper 1510L and a right-turn scraper 1510R are rotatably attached to the scraper attachment portion 1521. The lower surface side is connected by a scraper tension spring 1510a.

  Further, the respective tip portions 1510La and 1510Ra of the left turning scraper 1510L and the right turning scraper 1510R are made of rubber members having elasticity.

  As a result, when the left-turning scraper 1510L and the right-turning scraper 1510R enter the interior from the rear gap between the pair of left and right hopper portions 1011L, 1011R that are moving upward, the left-turning scraper 1510L and the right-turning scraper 1510R The respective tip portions 1510La and 1510Ra of the left and right hopper portions 1011L and 1011R come into contact with the inner wall surfaces of the rising and moving hopper portions 1011L and 1011R, so that they are rolled upward, and the left-turning scraper 1510L and the right-turning scraper 1510R. However, mud and the like adhering to the inner wall surfaces of the pair of left and right hopper portions 1011L and 1011R can be effectively scraped off while rotating in the directions of arrows SL and SR (see FIG. 19A).

  When the left turning scraper 1510L and the right turning scraper 1510R are rotated in the directions of the arrow SL and the arrow SR, as shown in FIG. Stoppers 1511L and 1511R are formed so as to be opposed to the respective surfaces of the left rotating scraper 1510L and the right rotating scraper 1510R. As shown in FIG. 19B, when the left turning scraper 1510L and the right turning scraper 1510R are opened so as to be substantially straight when viewed from the back, the respective leading ends of a pair of left and right over-opening prevention stoppers 1511L and 1511R. The parts are in contact with each other and are configured not to open any more.

  The transplanting machine according to the present invention has an effect that holes can be appropriately formed in a belt-like sheet, and is useful as a fully automatic seedling transplanting machine for taking out seedlings from a pot portion of a tray and planting them in a field. .

2 front wheel 3 rear wheel 4 mission case 5 tray supply device 6 take-out device 7 planting device 8 steering handle 9 travel transmission case 10 hydraulic lifting cylinder 11 planting tool 19 multifilm 20 tray 21 seedling pot 22 seedling 100 tray supply device 110 seedling Platform 111 Tray conveying path 155 Guide rail 200 Extraction device 300 Seedling planting device 400 Seedling planting device drive mechanism 420 Planting clutch 470 Solenoid 500 Hole punching device 510 Hole punching tool 511 Electric heater 520 Vertical motion mechanism 521 First cam 522 Second cam 523 Upper link mechanism 524 Lower link mechanism 525 Connecting arm 526-1 Lower roller 526-2 Upper roller 1011L Left hopper portion 1011R Right hopper portion 1012L Left hopper holder 1012R Right hopper holder Over 1200F before V-shaped cut-out portion 1200B after the V-shaped cut-out portion 1210F before guard 1210B after the guard

Claims (4)

Provided with a seat (19) drilling device drilling a hole in the (500) for laying the field of ridges, the transplanter instill implant (22) into the hole the drilling device (500) is opened only,
The perforating device (500), said sheet (19) piercing the drilling tool and (510), said drilling tool (510), the stationary track is lowered, raising Rutotomoni move backward transplanter according to claim Rukoto provided a moving mechanism (520). A link mechanism (524) for moving the moving mechanism (520) and an auxiliary link mechanism (523) are provided so as to be vertically rotatable, respectively.
The transplanter according to claim 1, wherein the link mechanism (524) includes a front link member (524-1) and a rear link member (524-2) connected in series. The timing at which the link mechanism (524) rotates upward is delayed from the timing at which the auxiliary link mechanism (523) rotates upward,
By changing the angle (θ) formed by the front link member (524-1) and the rear link member (524-2) over a predetermined period after the auxiliary link mechanism (523) starts to rotate upward , transplanter according to claim 2, wherein the end portion is moved after the link mechanism (524) and configured to move the drilling tool (the 510) to the rear. A display device (630) for displaying information related to the planting operation of the implant (22);
The punching tool (510) is configured to melt the sheet (19) by heat to open the hole, and is provided with a temperature detection member (513) for detecting the temperature of the punching tool (510). When the temperature detecting member (513) detects that the tool (510) is colder than a predetermined value, the display device (630) displays that the punching tool (510) is cold. transplanter according to any one of claims 1 to 3, characterized in.