JP2016010329A5 - - 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, as a transplant from a seedling supply device for placing a seedling tray equipped with a large number of pots vertically and horizontally on a traveling vehicle body, a seedling planting device for planting seedlings in a basket, and a seedling tray of a seedling supply device A seedling extraction device that takes out one seedling at a time and supplies it to a seedling planting device is known (see, for example, Patent Document 1).

JP 2009-261278 A

  However, in the above-described conventional seedling transplanting machine, the vertical feed pins for feeding the seedling tray in the vertical direction in the seedling supply device have a predetermined dimension inwardly projecting in the left and right end portions of the seedling tray and always projecting the seedling tray. The mechanism that pushes down the lower side is the mainstream, and variations of the vertical feed mechanism that can realize stable vertical feed with little shift in the vertical direction of the seedling tray have been limited.

  In consideration of the problems of the conventional transplanter, the present invention provides a transplanter that realizes a stable vertical feed in which a tray is not easily displaced and expands the degree of freedom in designing a tray supply device including a vertical feed mechanism. The purpose is to provide.

The first aspect of the present invention is a tray supply device (100) for supplying a tray (20) containing an implant (22), a transverse feed device (170) for feeding the tray supply device (100) in a lateral direction, A planting tool (11) for planting the graft (22) in a field; and a take-out device (200) for taking out the graft from the tray (20) and feeding the graft to the planting tool (11). The tray supply device (100) moves between the pots (21) adjacent to each other in the vertical direction of the plurality of pots (21) arranged in the vertical and horizontal directions on the tray (20). performs a longitudinal feed operation that feed the tray, then to escape from between said pot (21) together perform a return operation to enter between the pot between the next row, the longitudinal feed operation and the return operation of the predetermined Tray that repeats at the timing A feeding tool (121), and the take-out device (200) has a take-out tool (255, 256) that rushes into the pot (21) and takes out the implant, and the take-out tool (255, while 256) is entered to the inside of the pot (21), the tray longitudinal feed device (121) is a transplanter, characterized in that the complete configuration of the return operation.

Moreover, 2nd this invention is equipped with the intermittent apparatus (420,441,470) which performs the planting operation | movement of the said planting tool (11) intermittently, The said intermittent apparatus (420,441,470) WHEREIN: The transplanter according to claim 1, wherein when the planting operation of the planting tool (11) is stopped, the vertical feeding operation of the tray by the tray vertical feeding tool (121) is completed. is there.

Further, according to a third aspect of the present invention, while the take-out tool (250, 260) enters the inside of the pot (21), the tray feeding device (100) is laterally moved by the lateral feed device (170). When the feeding operation is not performed and the planting operation of the planting tool (11) is stopped by the intermittent device (420, 441, 470), the tray feeding device (100) by the lateral feeding device (170) is used. The transplanter according to claim 2, wherein the lateral feed operation of) is not completed.

The fourth of the present invention, while the tray longitudinal feed device (121) is the return movement is not horizontal feed motion of the tray supply device (100) by the transverse feed device (170) configured that the content has a transplanter according to any one of claims 1 to 3, characterized in.

According to a fifth aspect of the present invention, the tray supply device (100) is configured such that the tray transport path (111) for transporting the tray and the tray (20) are not provided on the tray transport path (111). has a tray sensing device for detecting (1100), based on said tray sensing device (1100) according to the detection result, characterized by generating an alarm in conjunction with the operation of the intermittent device (420,441,470) according Item 4. The transplanter according to Item 2 or 3.

In addition, according to a sixth aspect of the present invention, there is provided a swing link (310) for operating the planting tool (11) in a vertical direction along a predetermined operation locus, and a planting tool for opening and closing a lower portion of the planting tool (11). closing mechanism (322,1014,1015L, 1015R, 1340,1350) comprises a front Symbol planting tool closing mechanism (322,1014,1015L, 1015R, 1340,1350) more to the operation of the planting device (11) bottom, the opening actuation trajectory definitive bottom dead center or the implant at the bottom dead center near the (22) to the opening degree capable planting in the field, the take-off the implant from (200) (22) in the stop position to receive, is open smaller than the opening degree of any of claims 1 to 5, characterized in that the middle closing arrangement descending to the bottom dead center or the bottom dead center vicinity from the stop position Or a transplanter according to any one of the above.

According to a seventh aspect of the present invention , a closing regulating member (1016) is provided in the planting tool opening / closing mechanism (322, 1014, 1015L, 1015R, 1340, 1350), and a protruding member (1311) is provided in the swing link (310). ) is provided, said when the planting device (11) is positioned at the stop position, the projection member (1311) is the closure restricting member (1016) temporarily said planting device I per (11) by restricting the lower closing operation, the lower portion of the planting device (11) is a transplanter according to claim 6, characterized in that it has a reduced open configuration than the opening degree it said.

Further, according to an eighth aspect of the present invention, the planting tool (11) has a hook-shaped tip and is configured to be openable and closable in the left-right direction, on the inner surface and the outer surface of the planting tool (11). a spatula-shaped member in contact (1511), a biasing member (1520) for biasing said scoop-like member (1511) to the planting device (11) side, against the biasing force of the biasing member (1520) And a scraper operation control member (1530) for controlling the movement of the spatula-shaped member (1511) toward the planting tool (11), and the upward operation of the planting tool (11). At the time, based on the control of the scraper operation control member (1530), the spatula-like member (1511) comes into contact with the inner surface of the planting tool (11) whose tip is open, and the planting tool ( 11) During the downward operation, the biasing member (1520) Based on the force, is a transplantation machine as set forth in any one of claims 1 to 7, characterized in that the scoop-like member to the outer surface (1511) is configured to contact the planting device (11) .

  According to the first aspect of the present invention, it is possible to realize a stable vertical feed in which the tray is not easily displaced, and it is possible to increase the degree of freedom in designing the tray supply device including the vertical feed mechanism. In particular, even when the tray vertical feed tool (121) does not lock the returning tray, the take-out tools (250, 260) have entered the pot (21) to prevent the tray from shifting. I can do it.

  In addition, according to the second aspect of the present invention, the tray vertical feeding tool (121) can reliably hold the tray (20) and can prevent the tray (20) from shifting in a state where the planting operation is stopped by intermittent planting.

  Further, according to the third aspect of the present invention, the lateral feed of the tray (20) can be operated slowly at a timing that does not hinder the removal of the implant, and the accuracy of the lateral feed is improved.

  Further, according to the fourth aspect of the present invention, when the holding of the tray (20) is not stable while the tray vertical feeding tool (121) is returning, the tray feeding device (100) by the lateral feeding device (170) is used. It is possible to prevent the tray (20) from being displaced by the lateral feed operation.

  Further, according to the fifth aspect of the present invention, the operator can determine the degree of decrease and the remaining amount of the transplant (22), and the replenishment workability of the implant (22) is improved.

  Moreover, the sound when the planting tool (1011) is closed can be reduced by the sixth invention. By closing the planting tool (1011) in the middle of moving down after receiving the transplant (22) at the stop position, the transplant (22) can be securely held in the planting tool (1011) and planting. Good posture.

  Moreover, according to the seventh aspect of the present invention, it is possible to reduce the sound when the planting tool (1011) is closed. By closing the planting tool (1011) in the middle of moving down after receiving the transplant (22) at the stop position, the transplant (22) can be securely held in the planting tool (1011) and planting. Good posture.

  Further, according to the eighth aspect of the present invention, the inner surface and the outer surface of the planting tool (1011) can be scraped by the common scraper portion (1510) with a simple configuration. Since the scraper portion (1510) is urged toward the planting tool (1011) by the urging member (1520), a scraping action can be reliably obtained.

Left side view of a seedling transplanter according to an embodiment of the present invention The top view of the seedling transplanting machine of embodiment of this invention 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 of the tray feed rod of an apparatus (A)-(b): The perspective view of the tray supply apparatus of Embodiment 1 of this invention. Schematic side view showing the configuration of the tray vertical feeding device of the first embodiment Schematic perspective view of the take-out device of the first embodiment Schematic side view of the take-out device, as seen from the upper left back side of the page of FIG. The schematic diagram which shows the rough correspondence of the position of rotation of the seedling drive arm and the position on the locus | trajectory of the front-end | tip part of a pair of extraction claw in the extraction apparatus of this Embodiment 1. FIG. 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 perspective view which looked at the 2nd seedling planting device and the 2nd seedling planting device drive mechanism in this Embodiment 2 from the left back of the body. The perspective view which looked at the 2nd seedling planting device shown in Drawing 14, and the 2nd seedling planting device drive mechanism from the right side of the body The perspective view which looked at the 2nd seedling planting device shown in Drawing 14, and the 2nd seedling planting device drive mechanism from the left front of the body (A): Left side view of the planting clutch, (b): Schematic partial enlarged view for explaining the operation of the planting clutch Left side view showing seedling planting device, seedling planting device drive mechanism, etc. for explaining problems of planting clutch (A): schematic side view showing a configuration example of a brake cam, (b): schematic side view showing another configuration example of the brake cam

  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 swung up and down to plant the seedlings 22 (see FIG. 4) disposed in the rear of the traveling vehicle body 15 and the engine 12 and the transmission case (also referred to as a main transmission case) 4 disposed in the field. Take out the seedling planting apparatus 300, the tray supply apparatus 100 for supplying the tray 20 (see FIG. 4) containing the seedlings 22 and the seedling raising pot 21 (see FIG. 4) of the tray 20 of the tray supply apparatus 100. A planting depth adjusting mechanism 700 including a take-out device 200 for entering the member 260 to take out the seedling 22 and supplying it to the planting tool 11 and a sensor plate 710 for keeping the planting depth of the seedling 22 constant (FIG. 12) Wheel 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.

  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) the seedling stand 110 is arranged so that the seedlings in the seedling pot 21 for one row in the horizontal direction of the tray 20 are sequentially taken out by the takeout member 260. However, after the horizontal feeding operation intermittently sent in the horizontal direction and (2) the removal of the seedlings from all the seedling pots 21 for one row in the horizontal direction is completed, the tray 20 on the seedling table 110 is moved to the tray feeding rod. There is a vertical feed operation in which the row of the seedling pots 21 is fed downward by 121 in a downward direction.

  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. 5), and the tray 20 is intermittently vertically fed along the tray conveyance path 111. The tray feed rod 121 of the present embodiment is an example of a tray vertical feed tool of the present invention. Moreover, the seedling pot 21 of this Embodiment corresponds to an example of the pot of this invention.

  The detailed configuration of the tray supply device 100, the tray detection device 1100, and the take-out device 200 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, the power from the mission case 4 is transmitted to the planting transmission device 18 to take out the seedling 22 from the seedling pot 21 and plant it in the groin of the field, and the chain belt. While being transmitted to the take-out device 200 through 202, it is transmitted to the planting tool 11 through the seedling planting device drive 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 detailed configurations of the seedling planting apparatus 300 and the seedling planting apparatus drive 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. It is the structure which can be planted automatically on the upper surface of the ridge U.

  The traveling unit is provided with an airframe control mechanism 500 that moves the pair of left and right rear wheels 3 and 3 up and down relative to the traveling vehicle body 15 to control the posture and the vehicle height of the traveling vehicle body 15.

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

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

  Note that a lift operation lever 81 (see FIG. 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 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. 3 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. 3 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. 6), the rotation angle of the vertical movement arm 320 (see FIG. 9) in the case of the planting tool 11, In the case of feed, the rotation angle of the longitudinal feed drive arm 150 (see FIG. 5) is used as a reference.

  As shown in FIG. 3, according to the operation timing 1210 of the extraction claw, the seedling transplanter 1 of the present embodiment is pulled out while the extraction member 260 holds the seedling 22 from the inside of the breeding pot 21 at the timing P2. 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 from the inside of the seedling pot 21 (see timing P2 in FIG. 3).

  Further, as shown in FIG. 3, according to the operation timing 1220 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 lowered from 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. The configuration including the planting clutch 420, the intermittent cam 441, the solenoid 470, and the like according to the present embodiment corresponds to an example of the intermittent device of the present invention.

  Further, as shown in FIG. 3, according to the operation timing 1230 of the lateral feed 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. 3, according to the operation timing 1240 of the longitudinal feed operation in the tray feed rod 121 of the tray supply device 100, the seedling transplanter 1 of the present embodiment is configured so that the tray feed rod 121 is seen from the side. In the operation of drawing a substantially square locus A (see FIG. 5), the tip of the tray feed rod 121 comes out from the gap 21a (see FIG. 5) between the adjacent seedling pots 21 on the back side of the tray 20. (See arrow 121a1 in FIG. 5), move upward (see arrow 121a2 in FIG. 5), and again enter the gap 21b (see FIG. 5) between the next seedling pots 21 (see arrow 121a3 in FIG. 5). The return operation up to is started after the takeout member 260 enters the inside of the seedling pot 21, and the takeout member 260 comes out of the inside of the seedling pot 21 (timing in FIG. 3). 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. 3, for the purpose of facilitating understanding, the tray feed rod 121 has the same contents as the operation timing 1240 of the vertical feed operation in the tray feed rod 121 of the tray supply device 100 described above, according to the operation timing 1250. 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. 3), since the takeout member 260 has entered the inside of 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.

  Further, 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. 3). 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. 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. 5) 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. 3), one seedling pot 21 of the seedling table 110 of the tray supply device 100 by the tray transport path moving device 170 is stored. 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 is 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. 4 (a), 4 (b), and 5. FIG.

  4A is a perspective view of the tray supply device 100, and FIG. 4B is an enlarged perspective view of a portion X in FIG. 4A. FIG. 5 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. Here, the tray transport path moving device 170 of the present embodiment corresponds to an example of a lateral feed device of the present invention.

  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 4, the tray detection device 1100 is provided on a tray detection member 1110 that is rotatably disposed at a substantially central portion of the tray conveyance path 111 and on the outer side surfaces 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 the protruding portion 121ab protruding downstream at both ends of the central portion 121a of the tray feed rod 121 can enter is formed (FIG. 4B). 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.

  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 trajectory K, and sequentially from the seedling pot 21 that moves in the lateral direction. The seedling 22 is taken out and supplied to the planting device 7.

  Next, mainly using FIG. 6 and FIG. 7, the configuration of the take-out device 200 provided in the seedling transplanter 1 of the present embodiment will be mainly described.

  6 is a schematic perspective view of the take-out device 200, and FIG. 7 is a schematic side view of the take-out device 200 as seen from the upper left back side of the paper surface of FIG.

  As shown in FIGS. 6 and 7, the take-out device 200 is rotatably held by an take-out device fixing member 201 fixed to the main body of the seedling transplanter 1, and the main body side drive source is connected via a chain belt 202. A drive arm 220 that is rotated in the same direction by a drive shaft 203 that is rotated in the direction of arrow B by power, a connecting arm 230 in which one end portion 230a is rotatably connected to a distal end side portion 220a of the drive arm 220; A plate-like member that is held on the take-out device fixing member 201 by fixing pins 201a and 201b and has an outer shape of an approximately J letter, and the side closer to the tray supply device 100 is straight and the far side is substantially R And a guide portion 240 having a guide groove 241 that has a shape rising up.

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

  In addition, the structure including the board | substrate 250 and the extraction member 260 of this Embodiment corresponds to an example of the extraction tool of this invention.

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

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

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

  Next, the transmission mechanism 290 will be further described.

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

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

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

  Then, when the cam 270 rotates in the direction of arrow B, the protruding portion 273b having an outer diameter larger than that of the other portion 273a in the outermost edge portion 273 is the outer peripheral edge portion of the root portion of the first projection 283c for holding the tension spring. , The pushing arm tension spring 284 is extended, and the pushing arm 283 is swung counterclockwise in FIG. 7 so that the pushing rod 281 connected by the connecting rod 282 moves backward. Yes (see arrow C). Further, when the cam 270 rotates in the direction of arrow B, the other portion 273a having an outer diameter smaller than the protruding portion 273b in the outermost edge portion 273 is the outer peripheral edge portion of the root portion of the first projection 283c for holding the tension spring. , The push-out arm tension spring 284 is contracted, and the push-out arm 283 is rotated clockwise in FIG. 7 so that the push-out rod 281 connected by the connecting rod 282 protrudes (arrow). D). Each time the push rod 281 protrudes, the tip of the pair of extraction claws 261L and 261R passes through the notch 281b provided in the tip 281a of the push rod 281. It is a configuration that removes the soil that had been removed.

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

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

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

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

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

  Here, FIG. 8 is a schematic diagram showing a general correspondence relationship between the rotational position of the drive arm 220 and the positions on the locus K of the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R. The rotation positions P1 to P6 of the drive arm 220 shown in FIG. 8 correspond to the positions K1 to K6 on the locus K of the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R. In addition, the arrow described on the broken line which shows the locus | trajectory K has shown the operation | movement direction.

  As shown in FIG. 8, the operation of the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R from the position K1 to the position K2 corresponds to the operation of extracting the seedling 22 from the seedling pot 21. Since the locus K from the position K1 to the position K2 is linear, the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R recede straight from the seedling pot 21. At this time, the force in the direction approaching each other acts on the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R by the restoring force of the tension spring 263, and the seedlings 22 extracted from the seedling pot 21 are held. I can do it. The opening / closing operation of the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R will be described later together with the operation of the push rod 281.

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

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

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

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

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

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

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

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

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

  Next, operations of the transmission mechanism 290 and the extrusion mechanism 280 will be mainly described with reference to FIGS. 6, 7, and 8.

  As shown in FIG. 6, the first gear 291 fixed to the distal end side portion 220 a of the drive arm 220 by the rotation of the drive arm 220 in the B direction moves in the B direction around the rotation fulcrum 220 b of the drive arm 220. Revolve. The first gear 291 is rotatably attached to the connecting arm 230 via the first rotation shaft 291a, and rotates the third gear 293 in the B direction via the second gear 292. The third gear 293 is fixed to the distal end portion 245 b of the first guided member 245 that is integral with the cam shaft 271, and the edge portion 245 a near the distal end of the first guided member 245 is connected to the connecting arm 230. Since the third gear 293 rotates, the cam 270 rotates in the B direction via the cam shaft 271. That is, the cam 270 rotates in accordance with the drive cycle of the drive arm 220.

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

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

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

  On the other hand, at this time, the protrusion 273b of the outermost edge 273 of the cam 270 is in contact with the outer peripheral edge of the base portion of the first projection 283c for holding the tension spring, so that the push arm tension spring 284 is pulled. The pushing arm 283 is rotated counterclockwise in FIG. 7 (see arrow C), and the pushing rod 281 connected by the connecting rod 282 is maintained in the retracted state.

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

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

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

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

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

  That is, at the same time when the operation from the position K4 toward the position K5 is started, the other portion 273a of the outermost edge portion 273 of the cam 270 is replaced with the outer peripheral edge of the root portion of the first protrusion 283c for holding the tension spring. 7, the pushing arm 283 instantaneously turns clockwise in FIG. 7 due to the restoring force of the pushing arm tension spring 284 (see arrow D), and the pushing arms connected by the connecting rod 282. At the same time as the rod 281 is pushed out, the cutout part 281b of the tip part 281a of the push rod 281 moves while expanding the tip parts of the pair of extraction claws 261L, 261R.

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

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

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

  On the other hand, when coming to the vicinity of the position K6, the projecting portion 273b of the outermost edge portion 273 of the cam 270 contacts the outer peripheral edge portion of the base portion of the first projection 283c for holding the spring spring instead of the other portion 273a. As a result, the push arm tension spring 284 is extended, the push arm 283 is swung counterclockwise in FIG. 7 (see arrow C), and the push rod 281 connected by the connecting rod 282 is retracted. Change to state.

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

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

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

  Next, with reference to FIGS. 4 and 5 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. 5, the tray vertical feeding device 120 has (1) the above-described tray feeding rod 121 and (2) the upper end portion 121b1 of both end portions 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. 4 and 5.

  It is assumed that the seedling table 110 is moved in the right direction, that is, in the direction of arrow F (see FIG. 4) 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. 5).

  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. 4B and 5), 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 axial center of the tip portion 142, whereby the central portion 121a of the tray feed rod 121 moves in the direction of the arrow 121a1 (see FIG. 5). 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. 5) 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. 5) while maintaining the state of being located 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. 5) 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.

  The seedling 22 of the present embodiment corresponds to an example of the implant of the present invention, and the swing link mechanism 310 corresponds to an example of the swing link of the present invention. The first connecting shaft 321 of the present embodiment is an example of the “connecting shaft with the swing link of the vertical movement arm” of the present invention, and the open / close connecting cable 350 is an example of the open / close connecting mechanism of the present invention. It hits.

  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 And a 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. ing.

  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.

  The intermittent cam 441 of the present embodiment is an example of the cam member of the present invention, and the solenoid 470 is an example of the drive device of the present invention. Further, the tension spring 480 of the present embodiment corresponds to an example of the spring member of the present invention.

  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.

  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 in order to position the full end detection lever 771 on the front end side of the long hole 762 of the counter arm 760. 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, at least an on / off signal from the planting on / off button 620, a switching signal for the lifting operation lever 81, and an on / off signal from the planting switch 770 are input to the control unit 800. The pulse signal is output to the solenoid 470.

  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.

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

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

(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.

(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. When the “ON” signal is received from the planting switch 770 under the AND condition, a signal for energizing the solenoid 470 is output. That is, similarly to the above, the control unit 800 outputs a pulse signal at the operation cycle so as to energize the solenoid 470 at a predetermined operation cycle.

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

  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, in the seedling transplanting machine of the second embodiment, the closing restricting plate 1016 for temporarily restricting the closing operation of the second planting tool 1011 and the swing link mechanism 310 are in the middle of swinging in the vertical direction. The point provided with the projecting member 1311 that temporarily contacts the closing restriction plate 1016 and the point provided with the scraper device 1500 that drops mud and the like adhering to the inner surface and the outer surface of the second planting tool 1011 are described above. It is different from the configuration.

  FIG. 14 is a perspective view of the second seedling planting device 1300 and the second seedling planting device drive mechanism 1400 as viewed from the left rear of the aircraft. FIG. 15 is a perspective view of the second seedling planting device 1300 and the second seedling planting device driving mechanism 1400 shown in FIG. 14 as viewed from the right side of the aircraft. FIG. 16 is a perspective view of the second seedling planting device 1300 and the second seedling planting device driving mechanism 1400 shown in FIG. 14 as viewed from the left front side of the aircraft.

  As shown in FIG. 14, the second planting tool 1011 has a pair of left and right left hopper parts 1011L and 1011R, and upper ends of the left hopper part 1011L and the right hopper part 1011R for temporarily holding seedlings and planting them in the field. The left hopper holder 1012L and the right hopper holder 1012R, and the left hopper holder 1012L and the right hopper holder 1012R, which are detachably connected to open and close the front end sides of the left hopper portion 1011L and the right hopper portion 1011R. One end and the other end are fixed to the front lower end of the holder holding frame 1013, the left hopper holder 1012L, and the right hopper holder 1012R which are rotatably held around the fulcrum shaft 1013a, and the left hopper portion 1011L and the right hopper portion 1011R. But The other end of the second open / close connection cable 1350 (reference numeral in FIG. 9) is fixed to the front upper ends of the hopper tension spring 1014 that constantly urges the compressive force in the direction of twisting, the left hopper holder 1012L, and the right hopper holder 1012R. A pair of left and right open / close arms 1015L and 1015R connected to each other.

  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. It is the structure which meshes | engages.

  As a result, a plurality of line contacts can be made depending on the meshing ratio of the gears, and there is little friction due to rolling contact on the pitch circle.

  In addition, the left hopper holder 1012L and the right hopper holder 1012R can be configured by only a plate material and can be shared between the left and right sides, so that the configuration becomes simple.

  Further, on the front side of the left and right pair of left and right opening / closing arms 1015L, a closing restricting plate 1016 is disposed so as to protrude forward, and is disposed so as to protrude from the rotating upper shaft 317a of the upper arm 311 of the swing link mechanism 310. The protruding member 1311 is fixed at a position where it hits at a predetermined timing.

  Specifically, the protruding member 1311 is configured such that a bolt 1311b is screwed into a tip portion of a plate 1311a protruding from the rotating upper shaft 317a, and a protruding dimension of the bolt 1311b is adjustable. The head of the bolt 1311b hits the closing restriction plate 1016 at a predetermined timing.

  Also, unlike the first embodiment, one end portion 1351 of the second open / close connection cable 1350 of the second embodiment is configured by an elastic spring member. This is because while the bolt 1311b of the protruding member 1311 hits the closing restricting plate 1016 and temporarily blocks the second planting tool 1011 from being completely closed, the size of the blocking amount is absorbed, and the bolt 1311b This is a device for making it possible to completely close the second planting tool 1011 when it is removed from the closing restriction plate 1016.

  In the first embodiment, the open / close arm 340 (see FIG. 9) is rotatably attached via the second connecting shaft 341 on the lower end surface side of the lower arm 312, but the second embodiment. Then, as shown in FIG. 14, the second opening / closing arm 1340 is attached to the upper arm surface side of the lower arm 312 via the second connecting shaft 341 so as to be rotatable.

  With the above configuration, the left and right hopper portions 1011L and 1011R of the second planting tool 1011 are opened at the lower position (for example, the position of the bottom dead center) by the operation of the pair of left and right opening and closing arms 1015L and 1015R and the seedlings 22 After the transplantation, the swing link mechanism 310 draws a predetermined trajectory T1 (see FIG. 1) and gradually closes in the process of moving upward, but the head of the bolt 1311b closes at the top dead center. In this way, the seedling 22 released from the take-out member 260 is received at the stop position of the second planting tool 1011 (see timing P3 in FIG. 3) beyond the top dead center in a slightly opened state without being completely closed. . The second planting tool 1011 receives the seedling 22 and then the head of the bolt 1311b is removed from the closing restriction plate 1016 before entering the soil while descending, so that the restriction of the closing is released and Close completely while moving to rush into the field.

  Thereby, since the closing operation is temporarily interrupted immediately before the second planting tool 1011 is completely closed, the sound generated at the time of closing becomes quiet.

  Further, by adjusting the tightening amount of the bolt 1311b to the plate 1311a, the opening amount of the second planting tool 1011 near the top dead center can be adjusted.

  In addition, when the second planting tool 1011 receives the seedling 22, it is not completely closed, and after receiving the seedling 22, it is completely closed, so the seedling 22 received by the left and right hoppers 1011L, 1011R is firmly attached. The posture of the seedling 22 can be stabilized inside the second planting tool 1011.

  The components including the opening / closing cam 322, the hopper tension spring 1014, the right pair of opening / closing arms 1015L and 1015R, the second opening / closing arm 1340, the second opening / closing connection cable 1350, and the like according to the present embodiment are the planting of the present invention. This is an example of an accessory opening / closing mechanism. Further, the closing restriction plate 1016 of this embodiment corresponds to an example of the closing restriction member of the present invention, and the protruding member 1311 corresponds to an example of the protruding member of the present invention.

  Next, a scraper device 1500 that removes mud and the like attached to the inner and outer surfaces of the second planting tool 1011 will be described with reference to FIGS. 14 to 16.

  As shown in FIGS. 14 to 16, the scraper device 1500 is (1) rotatably disposed in front of the second planting tool 1011, and has a rubber spatula member 1511 provided at the tip thereof. A scraper portion 1510 contacting the inner and outer surfaces of a pair of left and right left hopper portions 1011L and 1011R provided on the second planting tool 1011; and (2) a pair of left and right left hopper portions 1011L. And a scraper spring 1520 that urges toward the right hopper portion 1011R side, and (3) a scraper rotation shaft that is rotated by a rotational driving force supplied from the second seedling planting device drive mechanism 1400 (not shown: this embodiment) In the embodiment, counterclockwise when viewed from the left side with the first connecting shaft 321 that drives the opening / closing cam 322 as an axis (see arrow W in FIG. 14). The scraper cam 1530 is rotated while being in contact with the outer peripheral edge of a scraper roller 1541 rotatably attached to a scraper swinging plate 1540, which will be described later. A scraper cam 1530 that controls the movement of the pair of left and right left hopper portions 1011L and 1011R by the spatula-like member 1511 by swinging the scraper swing plate 1540 up and down while resisting the biasing force. I have. The scraper cam 1530 is configured in a shape in which a large-diameter portion 1530a that protrudes greatly and a small-diameter concave portion 1530b are smoothly connected to each other about a rotation shaft (not shown) that is a shaft center of the scraper cam 1530. In addition, a large-diameter arc-shaped portion 1530a is provided with a medium-diameter portion 1530c in the middle.

  The scraper portion 1510 includes (1) a spatula-like member 1511 and (2) the spatula-like member 1511 disposed at the tip and the other end fixed to a fulcrum 1540a provided through the scraper swing plate 1540. The scraper arm 1512 is provided.

  Further, as shown in FIG. 15, the scraper swing plate 1540 is rotatably supported at the rear end upper portion of the casing 401 of the second seedling planting device drive mechanism 1400 by a fulcrum portion 1540a. One end 1520 a of the scraper spring 1520 is attached to the front end side of the scraper swing plate 1540, and the other end 1520 b is attached to a spring stay 401 c provided at the upper end portion of the casing 401.

  Thus, the scraper spring 1520 as a tension spring is attached so that the spatula-like member 1511 is always urged toward the pair of left and right left hopper portions 1011L and 1011R.

  In the above configuration, when the scraper cam 1530 is rotated, the range from the small-diameter recessed portion 1530b to the large-diameter portion 1530a of the scraper cam 1530 hits the scraper roller 1541, thereby restoring the scraper spring 1520. The scraper swing plate 1540 is configured to move in a direction in which the scraper arm 1512 is pushed down (clockwise in a left side view) (see an arrow S in FIG. 14) against a force (a force in a contracting direction).

  In addition, the scraper cam 1530 has a medium diameter portion 1530c that is not in contact with the scraper roller 1541 and floats, and the restoring force (force in the contracting direction) of the scraper spring 1520 is not restricted, and the restoring force is not affected by the scraper. The scraper swing plate 1540 is configured to move in the direction in which the scraper arm 1512 is lifted (counterclockwise when viewed from the left side) (see the arrow T in FIG. 14).

  The scraper spring 1520 of the present embodiment corresponds to an example of an urging member of the present invention, and the scraper cam 1530 of the present embodiment corresponds to an example of a scraper operation control member of the present invention.

  Next, the operations of the pair of left and right left hopper portions 1011L and 1011R, the scraper cam 1530, and the scraper portion 1510 will be described.

  (1) After the second planting tool 1011 has planted seedlings in the field, the left hopper portion 1011L and the right hopper portion 1011R are raised while being opened.

  At this time, the small-diameter concave portion 1530b of the scraper cam 1530 is in contact with the scraper roller 1541, and the spatula member 1511 enters the opened left hopper portion 1011L and right hopper portion 1011R, and the spatula member While the peripheral edge portion of 1511 is pressed against the inner wall surfaces of the left hopper portion 1011L and the right hopper portion 1011R, the position where the scraper cam 1530 hits the scraper roller 1541 moves from the small diameter recessed portion 1530b to the large diameter portion 1530a. As a result, the scraper unit 1510 moves downward (see arrow S in FIG. 14).

  During this movement, as shown in FIGS. 14 and 15, the peripheral edge of the spatula-shaped member 1511 scrapes off mud and the like adhering to the inner wall surfaces of the left hopper portion 1011L and the right hopper portion 1011R.

  (2) A state in which the second planting tool 1011 continues to rise and the left hopper portion 1011L and the right hopper portion 1011R are closing.

  At this time, the large-diameter portion 1530a of the scraper cam 1530 is in contact with the scraper roller 1541 and maintains the scraper portion 1510 at the lower position while resisting the force of the scraper spring 1520 in the contracting direction. 1511 exits from the inside of the left hopper portion 1011L and the right hopper portion 1011R that are being closed.

  (3) A state in which the second planting tool 1011 goes over the top dead center and the left hopper portion 1011L and the right hopper portion 1011R are lowered while being closed.

  At this time, the medium diameter portion 1530c of the scraper cam 1530 is in contact with the scraper roller 1541, and the scraper portion 1510 moves upward (see arrow T in FIG. 14) by the force in the direction in which the scraper spring 1520 contracts.

  At this time, the spatula-like member 1511 has already come out of the left hopper portion 1011L and the right hopper portion 1011R, the scraper portion 1510 moves upward, and the left hopper portion 1011L and the right hopper portion 1011R descend. . Therefore, as shown in FIG. 16, the recess 1511a formed at the tip of the spatula-shaped member 1511 is pressed along the front side of the outer wall surface of the left hopper portion 1011L and the right hopper portion 1011R, and mud adhering thereto. Make sure to scrape off etc. The scraper roller 1541 is separated from the medium diameter portion 1530c of the scraper cam 1530 when the recess 1511a of the spatula member 1511 contacts the front side of the outer wall surface of the left hopper portion 1011L and the right hopper portion 1011R.

  (4) The state where the tips of the left hopper portion 1011L and the right hopper portion 1011R of the second planting tool 1011 are completely closed and entered the field.

  At this time, the medium diameter portion 1530c of the scraper cam 1530 is in contact with the scraper roller 1541, and the spatula-shaped member 1511 is in front of the outer peripheral surface on the front side of the left hopper portion 1011L and the right hopper portion 1011R at a position where it does not contact the field. To leave. The outer diameter of the medium-diameter portion 1530c is gradually increased, and hits the scraper roller 1541 when the second planting tool 1011 enters the field.

  Thereafter, the process returns to the item (1) and the above items are repeated.

  According to the scraper device 1500 of the present embodiment, the scraper unit 1510 is forcibly moved by the scraper cam 1530 and the spatula-shaped member 1511 is pulled out from the inside of the left hopper unit 1011L and the right hopper unit 1011R. The left hopper portion 1011L and the right hopper portion 1011R can be scraped within a short range in T1 in FIG.

  Further, the spatula-like member 1511 is pushed out by a scraper spring 1520, and the pair of left and right hopper parts 1011L and 1011R move forward in the ascending process of the second planting tool 1011. Put inside. At that time, the scraper arm 1512 is lowered slightly diagonally from the horizontal, and the spatula-shaped member 1511 is attached to the scraper arm 1512 so as to be substantially perpendicular to the scraper arm 1512. It has become. Therefore, the spatula-shaped member 1511 is likely to enter the pair of left and right hopper portions 1011L and 1011R from below the pair of left and right hopper portions 1011L and 1011R, and within the pair of left and right hopper portions 1011L and 1011R, the hopper portions 1011L and 1011R. By being in contact with the inner wall, it bends and becomes almost horizontal, and the inner wall can be scraped accurately.

  Further, the spatula-shaped member 1511 has a notch (not shown) formed on the side fixed to the scraper arm 1512, and protrudes at a position corresponding to the notch on the scraper arm 1512 side. A portion (not shown) is formed. As a result, when the spatula-shaped member 1511 is attached and fixed to the tip of the scraper arm 1512, the notch is fitted with the protrusion and fixed with a screw or the like, so that even if the screw is loosened, it can be prevented from rotating. Become.

  Further, the spatula-shaped member 1511 has a front portion configured as an attachment portion to the scraper arm 1512, a rear portion configured as a contact portion to the hopper portions 1011L and 1011R, and the attachment portion has a single pin (for example, an attachment bolt). However, even if the contact portion comes into contact with the hopper portions 1011L and 1011R, it is difficult to turn around the pin because the pin faces substantially in the front-rear direction. Further, since the left and right width of the contact portion is wider than the left and right width of the mounting portion, the contact portion is difficult to bend to the left and right and is in a nearly horizontal posture, and can be reliably scraped.

  In addition, in the said embodiment, although the structure which is not provided with the mechanism which switches the planting locus | trajectory in the seedling planting apparatus drive mechanism 400 was demonstrated, it is not only this but is a structure provided with the planting locus | trajectory switching mechanism, for example. Also good. Thereby, since a planting locus | trajectory can be changed, even if it changes between stocks, an optimal planting locus | trajectory is obtained.

  For example, as a first example of the planting trajectory switching mechanism, a plurality of trajectory switching gears having different gear ratios are provided on the drive shaft side and the driven shaft side, respectively, and arranged opposite to each other, and a plurality of trajectory switching gears provided on the driven shaft side are provided. The gear is loosely connected, and the locus switching gear selected by the slide position of the key slide is fixed to the driven shaft, so that the power from the drive shaft is transferred to the vertical arm drive shaft (see reference numeral 440 in FIG. 9). ) May be transmitted.

  As a second example of the planting locus switching mechanism, a plurality of locus switching gears provided on the drive shaft side and the driven shaft side of the first example may be intermittent gears. Here, the intermittent gear is a gear in which gear teeth are not provided on the entire circumference and are partially missing. As a result, a long stock can be realized.

  Further, as a third example of the planting locus switching mechanism, a configuration in which a swing cam is fixed to the driven shaft in the second example may be used. In other words, after shifting with the trajectory switching gear, the swing cam is fixed, so that the vertical movement of the link mechanism of the planting tool is intermittent and at the same time the swing is also intermittent. Same width and faster speed. Moreover, even if the intermittent stop time is not taken much, the vertical and swing speeds of the link mechanism are increased, so that it is possible to cope with long stocks.

  Further, as a fourth example of the planting locus switching mechanism, the stop position of the planting tool in each of the above examples is near the top dead center. Thereby, since the load which moves a link mechanism is small, it stops smoothly and begins to move.

  As a fifth example of the planting trajectory switching mechanism, the pivot point of the swing arm (see reference numeral 316a in FIG. 9) that swings in response to the swing of the swing cam in the above example is the locus switching gear. The structure provided on the drive shaft may be sufficient. This simplifies the configuration.

  Further, as a sixth example of the planting trajectory switching mechanism, a configuration in which a substantially oval gear is engaged may be used instead of the intermittent gear of the second example. Thereby, the speed of the link mechanism at the planting position can be changed to change the planting locus of the planting tool. In addition, since the gear having an approximately oval outer shape rotates continuously, the operation is smooth.

  In the above embodiment, the seedling planting device drive mechanism 400 provided with the planting clutch 420 has been described. Here, regarding a planting clutch, another structural example is demonstrated using FIGS. 17-19. FIG. 17A is a left side view of the planting clutch 1420, and FIG. 17B is a schematic partially enlarged view for explaining the operation of the planting clutch 1420. FIG. 18 is a left side view showing a seedling planting device 300, a seedling planting device drive mechanism 400, and the like for explaining the problem of the planting clutch 1420. Here, 1423 is a shaft of the clutch portion 1422, that is, a clutch shaft. 1441 and 1440 are for driving the driving force when the planting clutch 1420 is in the “on” state to swing the link mechanism up and down. An upper crank drive shaft and a lower crank drive shaft. As shown in FIG. 18, 1440 a and 1441 a are a lower crank fixed to the lower crank drive shaft 1440 and an upper crank fixed to the upper crank drive shaft 1441.

  As shown in FIG. 17A, the stopper claw 1421 of the planting clutch 1420 may stop halfway due to sliding resistance, for example, before it hits the stepped portion 1422a of the clutch portion 1422. In that case, since the angles of the upper crank 1441a and the lower crank 1440a are not determined, the angles of the upper crank 1441a and the lower crank 1440a vary from stop to stop, and the stop height of the planting tool 11 varies. Sometimes.

  Therefore, as shown in FIG. 19 (a), a reverse arc-shaped recess 1450a is formed in a part of the outer peripheral edge of the brake cam 1450 fixed to the clutch shaft 1423, and the stop position (for example, At the top dead center position, the rubber ball bearing (RBB) 1460 is fitted and stopped reliably. The rubber ball bearing 1460 is always urged toward the brake cam 1450 by the bearing tension spring 1480 via the arm 1470.

  In addition to the configuration shown in FIG. 19A, for example, as shown in FIG. 19B, a configuration in which a slope 1450b is provided on a part of the outer peripheral edge of the brake cam 1450 may be used. According to this configuration, the clutch shaft 1423 is rotated counterclockwise (see the arrow in FIG. 19B) when viewed from the left side by the biasing force of the rubber ball bearing 1460 toward the brake cam 1450 by the bearing tension spring 1480. By applying force as much as possible, the stopper claw 1421 of the planting clutch 1420 advances to the stepped portion 1422a of the clutch unit 1422 (see FIG. 17B), the angle of the clutch shaft 1423 is determined, and the planting tool stop position Is definitely determined. Accordingly, the shock at the start of the operation of the planting portion can be reduced as compared with the configuration in which the concave portion 1450a shown in FIG. 19A is provided and the rubber ball bearing 1460 is fitted. Here, FIG. 19A is a schematic side view showing a configuration example of the brake cam 1450, and FIG. 19B is a schematic side view showing another configuration example of the brake cam 1450.

  In the above embodiment, the return operation of the tray feed rod 121 is started after the takeout member 260 enters the inside of the seedling pot 21 and is completed immediately before the takeout member 260 comes out of the inside 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.

  Further, in the above-described embodiment, the swing link mechanism 310 includes the protruding member 1311 that temporarily contacts the closing restriction plate 1016 in the middle of the vertical swing, and the linkage operation between the closing restricting member 1016 and the protruding member 1311 is performed. However, the present invention is not limited to this. For example, the closing restriction member 1016 and the protruding member 1311 are not provided, and the same opening / closing operation is performed only by the shape of the opening / closing cam 322. It is also possible to adopt a configuration in which

  The seedling transplanting machine according to the present invention has an effect of realizing a stable vertical feed in which the tray is not easily displaced, and has an effect of expanding a degree of freedom in designing a tray supply device including a vertical feed mechanism. It is useful as a seedling transplanter and the like for taking out and planting it in the 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 traveling transmission case 10 hydraulic lifting cylinder 11 planting tool 20 tray 21 nursery pot 22 seedling 25 presser frame 100 tray supply device 110 seedling Platform 111 Tray transport path 155 Guide rail 200 Extraction device 300 Seedling planting device 400 Seedling planting device drive mechanism 420 Planting clutch 470 Solenoid

Claims (8)

A tray supply device (100) for supplying a tray (20) containing an implant (22), a transverse feed device (170) for feeding the tray supply device (100) in a lateral direction, and the implant (22) A planting tool (11) to be planted in a farm field, and a take-out device (200) for taking out the implant from the tray (20) and feeding it to the planting tool (11),
The tray supply device (100) moves between the pots (21) adjacent to each other in the vertical direction of the plurality of pots (21) arranged in the vertical and horizontal directions on the tray (20). performs a longitudinal feed operation feed that, after which it exits from between the pot (21) together perform a return operation to enter between the pot between the next row, the longitudinal feed operation and the return operation a predetermined timing Have a vertical tray feeder (121) that repeats at
The extraction device (200) has an extraction tool (255, 256) that enters the pot (21) and takes out the implant.
The transplanter according to claim 1 , wherein the tray vertical feeder (121) is configured to complete the return operation while the extraction tool (255, 256) enters the pot (21). An intermittent device (420, 441, 470) for intermittently performing the planting operation of the planting tool (11),
When planting operation of the intermittent device (420,441,470) by the planting device (11) is stopped, that the longitudinal feed motion of the tray by the tray longitudinal feed device (121) is completed The transplanter according to claim 1, wherein the transplanter is characterized . While the take-out tool (250, 260) enters the inside of the pot (21), the transverse feeding device (170) does not perform the transverse feeding operation of the tray supply device (100), and the When the planting operation of the planting tool (11) is stopped by the intermittent device (420, 441, 470), the lateral feed operation of the tray supply device (100) by the lateral feed device (170) is completed. The transplanter according to claim 2, wherein the transplanter is not provided. The horizontal feed device (170) is configured not to perform the horizontal feed operation of the tray supply device (100) while the tray vertical feed tool (121) is performing the return operation. The transplanter according to any one of 1 to 3. The tray supply device (100) includes a tray transport path (111) for transporting the tray and a tray detection device (1100 ) for detecting that the tray (20) is not present on the tray transport path (111). Have
The transplanter according to claim 2 or 3, wherein an alarm is issued in conjunction with an operation of the intermittent device (420, 441, 470) based on a detection result by the tray detection device (1100). A swing link (310) that operates the planting tool (11) in a vertical direction along a predetermined operation locus, and a planting tool opening / closing mechanism (322, 1014, 1015L, which opens and closes the lower part of the planting tool (11)). 1015R, equipped with a 1340, 1350),
Before SL planting tool closing mechanism (322,1014,1015L, 1015R, 1340,1350) more operation, the lower part of the planting device (11) is at the bottom dead center or bottom dead center vicinity definitive to the actuation trajectory The transplant (22) is opened to a degree of opening that can be planted in the field, and at a stop position where the transplant (22) is received from the take-out device (200), it is opened smaller than the degree of opening, and the stop position The transplanter according to any one of claims 1 to 5, wherein the transplanter is configured to close on the way to the bottom dead center or in the vicinity of the bottom dead center. The planting tool opening / closing mechanism (322, 1014, 1015L, 1015R, 1340, 1350) is provided with a closing restricting member (1016), the swing link (310) is provided with a projecting member (1311), and the planting tool ( when 11) is positioned at the stop position, the projection member (1311) that regulates the lower closing operation of the closure restricting member (1016) temporarily said planting device I per (11) by the lower part of the planting device (11) transplanter according to claim 6, characterized in that it has a reduced open configuration than the opening degree above. The planting tool (11) has a hook-shaped tip and is configured to be opened and closed in the left-right direction.
A spatula member (1511) in contact with the inner and outer surfaces of the planting tool (11);
A biasing member (1520) for biasing said scoop-like member (1511) to the planting device (11) side,
A scraper operation control member (1530) for controlling the movement of the spatula-like member (1511) toward the planting tool (11) against the urging force of the urging member (1520),
During the upward operation of the planting tool (11), the spatula shape is formed on the inner surface of the planting tool (11) whose tip is open based on the control of the scraper operation control member (1530). The member (1511) contacts,
During the downward operation of the planting tool (11), the spatula-shaped member (1511) contacts the outer surface of the planting tool (11) based on the biasing force of the biasing member (1520). transplanter according to any one of claims 1 to 7, characterized in that a configuration in which.