JP2017046614A5 - - Google Patents

Description

Transplanter

  The present invention belongs to the technical field of transplanters.

  A pressure-reducing wheel, which is a pressure-reducing member for relieving the soil around the seedlings to be transplanted in the field, is attached to a pressure-reducing frame that is pivotable in the vertical direction about the pivot point in the left-right direction. There is a transplanter that is provided with a weight that urges the pressure downward and changes the number of weights to adjust the pressure-suppressing load by the pressure-reducing wheel (see Patent Document 1).

JP 2009-261278 A (FIG. 1)

  According to the transplanter described in Patent Document 1, since the number of weights must be changed by attaching or removing weights, adjustment of the suppression load is troublesome. In addition, there are problems that it is difficult to finely adjust the suppression load and that the adjustment range is limited. Then, this invention makes it a subject to enable it to adjust the suppression load by the suppression member easily and exactly.

  In order to solve the above problems, the following technical measures were taken.

That is, the invention according to claim 1 is a transplanter provided with a planting tool (11) for planting a seedling (22) in a field, and a pressure suppressing member (13) for pressing down the soil around the planted seedling (22) . the provided suppression member (13) freely pivoting of suppression frame (2120), the suppression frame (2120) a load adjusting spring (2240) for biasing the provided Rutotomoni, the upper end of the load adjusting spring (2240) The transplanter was provided with a load adjusting lever (2220) for changing the position of the portion and adjusting the pressure-reducing load of the left and right pressure-reducing members (13) .

The invention according to claim 2, the vehicle body (15), and characterized in that a plurality of retaining grooves (2231) lever guide (2230) forming a retaining said load adjusting lever (2220) The transplanter according to claim 1 is provided.

The invention according to claim 3, wherein the both end portions in the operation direction of the load adjusting lever (2220) of a plurality of retaining grooves (2231), the protrusions (2250 to prevent the load adjusting lever (2220) is out The transplanter according to claim 2 is formed .

According to a fourth aspect of the present invention, when a vehicle body elevating member (4600) for elevating the traveling vehicle body (15) is provided, and the vehicle body elevating member (4600) is operated on the side for elevating the traveling vehicle body (15), The transplanter according to any one of claims 1 to 3, wherein the pressure suppressing frame (2120) is configured to rotate upward .

The invention according to claim 5, wherein the suppression element (13) is provided left and right, the left and right of the suppression member (13) is pivotally configured on the left and right about the lower end portion of the seedling (22) side and was a transplanter according to any one of claims 1 to 3, characterized in that the lateral inclination angle and change available-structure without changing the lateral spacing of the left and right of the suppression member (13) .

According to the invention of claim 1, by operating the load adjustment lever (2220) to adjust the position of the upper end of the load adjusting spring (2240), easily and accurately suppress load suppression member (13) can be adjusted to Runode, it is possible to set an appropriate suppress load while checking the town pressure situation.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, the load adjustment lever (2220) having a plurality of holding grooves (2231) is provided, so that the load adjustment lever (2220) is desired. Can be held in the position.

According to the invention of claim 3, in addition to the effect of the invention of claim 1 or claim 2 , protrusions (2250) at both ends in the operation direction of the load adjusting lever (2220) of the plurality of holding grooves (2231). by that each formation, Runode possible to prevent the load adjustment lever (2220) is disengaged from the retaining groove (2231), it is possible to maintain a desired suppression load that suddenly put down member (13) moves vertically it is possible to prevent, you improve the safety of the work.

According to the invention according to claim 4, in addition to the effect of the invention according to any one of claims 1 to 3, the pressure suppression frame (2120) is moved upward in conjunction with the raising operation of the vehicle body elevating member (4600). By rotating, the pressure suppressing member (13) can be automatically retracted from the field scene during turning .

According to the invention according to claim 5, in addition to the effect of the invention according to any one of claims 1 to 3 , the left and right pressure-suppressing members (13) are centered on the lower end portion on the seedling (22) side. a with the arrangements to be rotatable, it is possible to prevent the distance between the right and left crush member when changing the inclination angle of the left and right (13) is changed, interference right and left crush member (13) and seedlings (22) Interference is prevented and the soil around the seedling (22) can be surely crushed .

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 embodiment of the present invention, the operation of the extraction member, the operation of the planting tool, and the operation timing of the transverse feed operation of the seedling table of the tray supply device are shown, the operation of the extraction member, the operation of the planting tool, and the tray Diagram showing the operation timing of the vertical feed operation of the tray feed rod of the feeder (A)-(b): The perspective view of the tray supply apparatus of embodiment of this invention The schematic side view which shows the structure of the tray vertical feeding apparatus of embodiment of this invention Schematic perspective view of the take-out device of the embodiment of the present invention FIG. 6 is a schematic side view of the take-out device, as viewed from the upper left back side of the sheet of FIG. The schematic diagram which shows the rough correspondence of the position on the locus | trajectory of the front-end | tip part of a pair of extraction nail | claw, and the position of rotation of a seedling drive arm in the extraction apparatus of embodiment of this invention Left side view of a seedling planting device and a seedling planting device driving mechanism according to an embodiment of the present invention Schematic left side view of a seedling planting device drive mechanism according to an embodiment of the present invention The top view explaining the various operation levers arrange | positioned in the vicinity of a pair of right-and-left handle grips of the steering handle of embodiment of this invention, and an operation part The left view which shows schematic structure of the planting depth adjustment mechanism of embodiment of this invention The schematic block diagram explaining the input-output to the control part of embodiment of this invention Left side view of the vicinity of the suppression load adjusting mechanism of the seedling transplanter of the embodiment of the present invention The top view of the suppression load adjustment mechanism vicinity of the seedling transplanter of embodiment in this invention Left side view of the vicinity of the tray feed rod engaging / disengaging lever of the seedling transplanter according to the embodiment of the present invention (No. 1) Left side view of the vicinity of the tray feed rod engaging / disengaging lever of the seedling transplanter according to the embodiment of the present invention (No. 2) Schematic rear view of the vicinity of the display unit of the seedling transplanter of the embodiment of the present invention Schematic left side view of the vicinity of the display unit of the seedling transplanter of the embodiment of the present invention The perspective view of the finger main clutch operation lever vicinity of the seedling transplanter of embodiment in this invention Schematic right side view of the vicinity of the finger main clutch operation lever of the seedling transplanter of the embodiment of the present invention (No. 1) Schematic right side view of the vicinity of the finger main clutch operating lever of the seedling transplanter of the embodiment of the present invention (Part 2) Schematic right side view of the vicinity of the finger main clutch operation lever of the seedling transplanter of the embodiment of the present invention (No. 3) Schematic right side view of the vicinity of the finger main clutch operation lever of the seedling transplanter of the embodiment of the present invention (No. 4) The figure which shows the tray conveyance path vicinity of the seedling transplanter of embodiment in this invention (A: Left view, B: Partial expansion left view) The top view of the tray presence-absence detection mechanism vicinity of the seedling transplanter of embodiment in this invention Left side view in the vicinity of tray conveyance path of seedling transplanter of embodiment of the present invention (Part 2) The top view of the tray conveyance path vicinity of the seedling transplanter of embodiment in this invention 1 is a perspective view of the vicinity of a hydraulic / planting lever of a seedling transplanter according to an embodiment of the present invention. Left side view of the vicinity of the hydraulic pressure / planting lever of the seedling transplanter according to the embodiment of the present invention (No. 1) Left side view of the vicinity of the hydraulic / planting lever of the seedling transplanter according to the embodiment of the present invention (part 2) Left side view in the vicinity of hydraulic pressure / planting lever of seedling transplanter according to embodiment of the present invention (No. 3) Left side view in the vicinity of hydraulic pressure / planting lever of seedling transplanter of embodiment of the present invention (No. 4) Left side view in the vicinity of hydraulic pressure / planting lever of seedling transplanting machine of embodiment of the present invention (No. 5) Left side view of the vicinity of the hydraulic / planting lever of the seedling transplanting machine according to the embodiment of the present invention (No. 6) The rear view which shows the suppression load adjustment lever guide of embodiment in this invention The rear view which shows the right-and-left inclination angle adjustment mechanism of the pressure reduction wheel of embodiment in this invention Left side view of the vicinity of the suppression load adjustment mechanism for explaining different forms

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  First, the configuration and operation of the seedling transplanter 1 of the present embodiment will be specifically described with reference to FIGS.

  The basic configuration and operation of the seedling transplanter 1 will be described with reference to FIGS. 1 to 13. The configuration and operation of the seedling transplanter 1 related to the pressure reduction load adjusting mechanism 2200 and the like will be described with reference to FIGS. 35 will be described in detail later with reference mainly to FIG.

  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 transplanting machine 1 for transplanting seedlings 22 such as vegetables to be transplanted, a traveling vehicle body 15 having a pair of left and right front wheels 2 and rear wheels 3 as traveling wheels, A planting tool 11 for planting an engine 12 and a transmission case (also referred to as a main transmission case) 4 arranged at the front part of the vehicle body 15 and a seedling 22 (see FIG. 4) arranged at the rear part of the traveling vehicle body 15 in the field. A seedling planting device (planting device) 300 that swings up and down, a tray supply device 100 that supplies a tray 20 (see FIG. 4) containing the seedlings 22, and a seedling pot for the tray 20 of the tray supply device 100 21 (see FIG. 4), a take-out device 260 is inserted into the take-out device 260 to take out the seedling 22 and supply it to the planting tool 11, and a sensor plate 710 for keeping the planting depth of the seedling 22 constant. Including planting depth adjuster 700 (see FIG. 12), the suppression member put down wheels 13, steering wheel 8, and is configured to include an operation section 600 or the like which is arranged in the center portion of the steering handle 8.

  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 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, the vertical angle by the tray supply device 100. In the case of feed, the rotation angle of the longitudinal feed drive arm 150 (see FIG. 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.

  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, but in this embodiment, the tray 20 The vertical feed operation of the tray 20 by the feed rod 121 has been completed, and the tray feed rod 121 is stopped in a state where it remains in the gap 21a (see FIG. 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 can be improved. improves.

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

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

  Next, the tray supply apparatus 100 described above will be further described mainly with reference to FIGS. 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.

  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, the tray detection device (tray detection member) 1100 includes a tray detection member 1110 that is rotatably disposed at a substantially central portion of the tray conveyance path 111 and both left and right sides of the seedling table 110 as shown in FIGS. A pair of left and right interlocking arms 1120L and 1120R which are respectively arranged on the outer side surfaces of the tray and rotate in conjunction with the rotation of the tray detection member 1110, and a connection which connects the tray detection member 1110 and the pair of left and right interlocking arms 1120L and 1120R. The shaft 1130 and a pair of left and right limiter switches 1140L and 1140R respectively disposed at positions corresponding to the pair of left and right interlocking arms 1120L and 1120R on the inner side surfaces of the left and right side portions 172L and 172R of the tray transport path moving device 170 ing. 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 apparatus 300.

  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-shaped. And a guide portion 240 having a guide groove 241 that has a shape rising up.

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

  Further, the take-out device 200 is a cam 270 having a cam shaft 271 integrated with the first guided member 254, which is pivotably penetrated through the substrate 250, and is related to the thickness of the outer peripheral portion of the cam 270. The outer peripheral portion 272 whose thickness varies depending on the location of the outer peripheral portion when contacting the front end surfaces of the pair of left and right claw tip width regulating projections 262L, 262R provided on the inner surface portions of the pair of extraction claws 261L, 261R. And 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 300 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 input port of the planting device 300 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 the position K1 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 300 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 300 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.

  As a result, 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 300 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 300, 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 in the arrow G direction, that is, the left direction is started, the take-out 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 300. The seedling 22 of the rightmost breeding pot 21 is taken out by the take-out device 200 at the time of moving to. Thereby, all the seedlings 22 for one horizontal row of the seedling pot 21 are taken out.

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

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

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

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

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

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

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

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

  As shown in FIG. 9, the seedling planting apparatus 300 includes a planting tool 11 for planting the seedling 22 in a field, an upper arm 311 and a lower arm arranged in parallel with each other for swinging the planting tool 11 in the vertical direction. A swing link mechanism 310 having an arm 312 and a vertically moving arm 320 that is rotatably attached to the lower arm 312 via a first connecting shaft 321 and moves the swing link mechanism 310 up and down are provided. The first connecting shaft 321 is fixed to the vertical movement arm 320.

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

  Further, as shown in FIG. 9, the seedling planting device 300 is rotatably attached to the lower arm 312 via the second connection shaft 341 and opens and closes the planting tool 11, and the first connection shaft 321. And is rotated around the second connecting shaft 341 while being in contact with the outer peripheral edge of an opening / closing roller 342 that is pivotably attached to the tip of the opening / closing arm 340 via the third connecting shaft 343. Thus, the opening / closing cam 322 that swings the opening / closing arm 340 in the front-rear direction, one end 351 is connected to the third connection shaft 343 at the tip of the opening / closing arm 340, and the other end 352 is the opening / closing mechanism of the planting tool 11. And an open / close connection cable 350 connected to the 11a side.

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

  That is, as shown in FIG. 9, the swing link mechanism 310 is supported by the front upper end portion 401a of the casing 401 housing the seedling planting device drive mechanism 400 so that the upper end is pivotally supported by the upper front shaft 313a, and the lower end is A front swing arm 316a that is rotatably connected to a connection support plate 315 via a lower front shaft 314a, and a rear upper end portion 401b that houses a seedling planting device drive mechanism 400, an upper end is an upper rear portion. An upper shaft provided on the connection support plate 315, having a rear swing arm 316b supported rotatably on the shaft 313b and having a lower end rotatably connected to the connection support plate 315 via the lower rear shaft 314b. The front end of the upper arm 311 described above is rotatably connected to 316, and the front end of the lower arm 312 described above is rotatably connected to the lower rear shaft 314b of the connection support plate 315. , Each of the rear end portion of the arm 311 and lower arm 312 is pivotally connected to the rotating upper shaft 317a and the rotation under shaft 317b provided on the support plate 317 of the planting device 11.

  With the above configuration, when the rotational driving force is transmitted to the vertical movement arm drive shaft 440 in the seedling planting device drive mechanism 400, the vertical movement arm 320 fixed to the vertical movement arm drive shaft 440 rotates in the direction of the arrow A1. By moving, the lower arm 312 and the upper arm 311 repeatedly swing up and down and swing back and forth, so that the planting operation of the seedling 22 by the planting tool 11 is performed with respect to the ridge U. Automatically done at intervals.

  Further, when the vertical movement arm 320 to which the first connecting shaft 321 is fixed rotates in the direction of arrow A1 during the planting operation, the opening / closing cam 322 fixed to the first connecting shaft 321 becomes the opening / closing roller. Since it rotates while contacting the outer peripheral edge of 342, the open / close arm 340 swings (rotates) forward (counterclockwise) about the second connecting shaft 341. Along with this operation, one end 351 of the open / close connection cable 350 is pulled in the forward direction, so that the open / close mechanism 11a operates to open the planting tool 11.

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

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

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

  As shown in FIG. 10, the seedling planting device drive mechanism 400 includes a first gear 410 and a first gear 410 for transmitting the planting driving force output from the planting transmission device 18 to the planting clutch 420. When the planting clutch 420 and the planting clutch 420 are in the “ON” state, the transmission to the vertical movement arm drive shaft 440 is switched to the “ON” state or “OFF” state. A second gear 430 receiving a driving force from a transmission gear 421a fixed to the transmission shaft 421 of the planting clutch 420, and a small-diameter gear 430a fixed coaxially with the second gear 430. The third gear 450 fixed to the vertical movement arm drive shaft 440 is rotatably arranged so as to be engaged with the vertical movement arm drive shaft 440. Here, when the planting clutch 420 is in the “disengaged” state, the transmission shaft 421 of the planting clutch 420 stops without rotating and does not transmit the driving force to the second gear 430.

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

  Further, as shown in FIG. 10, the seedling planting device drive mechanism 400 is provided on the transmission downstream side of the planting clutch 420 and is fixed to the vertical movement arm drive shaft 440, and the planting clutch 420 is brought into the “on” state. Depending on whether the intermittent cam 441 having a concave portion 441a formed in a part of a circular outer peripheral edge for forcedly switching to the “cut” state and the one end portion 460a are separated from or in contact with the planting clutch 420 The first arm 460 having a substantially “h” shape in a side view, which is pivotally supported by a pivotal fulcrum 461, for switching between the engaged state and the disengaged state of the planting clutch 420. I have.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  Next, the various operation levers and the operation unit 600 that are disposed in the vicinity of the pair of left and right handle grips 8L and 8R of the steering handle 8 will be described with reference to FIG. FIG. 11 is a plan view for explaining various operation levers and an operation unit 600 arranged in the vicinity of a pair of left and right handle grips 8L, 8R of the steering handle 8. FIG.

  As shown in FIG. 11, a main clutch lever 80 is provided in the vicinity of the left handle grip 8L of the steering handle 8, and an elevating operation lever 81 for operating the hydraulic elevating cylinder 10 is provided in the vicinity of the right handle grip 8R. Is provided.

  The raising / lowering operation lever 81 is configured to be manually switchable in three stages of “lowering”, “neutral”, and “raising”, and when switched to the “lowering” position, the hydraulic lifting cylinder 10 is to lower the traveling vehicle body 15. When the operation is stopped and the lowering is stopped by a sensor plate 710 (see FIG. 12), which will be described later, and the planting on / off button 620 (see FIG. 11), which will be described later, is in an ON state, the planting clutch 420 enters an “on” state. Planting work is started.

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

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

  With the above configuration, the planting on / off button 620 is arranged near the center of the operation panel 601, and thus it is easy to operate.

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

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

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

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

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

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

  As shown in FIG. 12, the planting depth adjusting mechanism 700 includes (1) a sensor plate 710 having a gently curved bottom surface that maintains a constant planting depth by contacting the farm scene 701, and (2 ) A substantially L-shaped plate-like member in a side view, wherein an L-shaped bent portion is rotatably supported with respect to the traveling vehicle body 15 by a rotation support shaft 721, and one end 722 extending rearward is a sensor plate. The other end 723 that is pivotally connected to the front end 711 of the 710 and the pivot support shaft 722a and that extends upward is manually operated by an operator in the vertical (up and down) direction of the sensor plate 710. A depth arm 720 that is pivotably connected to the distal end portion 741 of the transmission rod 740 that transmits the movement of the depth lever 730 for setting the position; and (3) the depth arm 720 is swingable from the main frame 17. A hanging spring 750, (4) It is a substantially L-shaped plate-like member in a plan view, and an L-shaped bent portion is rotatably supported with respect to the traveling vehicle body 15 by a rotation support shaft 761, and a long hole is formed below the rotation support shaft 761. 762 is formed, and is urged by the tension spring 766 connected to the upper end portion 763 to rotate in the arrow Y direction with the rotation support shaft 761 as an axis, and is provided in the hydraulic pressure switching valve portion 40. A counter arm 760 having a front end portion 764 connected by a rod 765 with respect to a lift operation valve (not shown), and (5) a counter arm 771 is positioned so that the front end side of the elongated hole 762 of the counter arm 760 is positioned. A planting switch 770 disposed on the arm 760, and (6) a connecting pin 781a provided at one end 781 is inserted into the elongated hole 762, and the other end 782 is connected via a connecting shaft 783. The upper end 712 and rotatably coupled to a sensor rod 780 of capacitors plate 710, and a.

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

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

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

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

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

  As shown in FIG. 13, 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 “on”.
In the state, the lifting operation lever 81 is set to the “raised” position, and the vehicle height of the traveling vehicle body 15 is at 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 via the rod 765 causes the hydraulic pressure switching valve. It is transmitted to an elevating operation valve (not shown) provided in the section 40 and is operated in the direction in which the hydraulic elevating cylinder 10 extends, and the vehicle height of the traveling vehicle body 15 is increased.

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

  By the above operation, even if the farm scene 701 is uneven, the planting depth of the seedling can be kept constant.

(3) 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.

  The basic configuration and operation of the seedling transplanter 1 have been specifically described above with reference to FIGS.

  (A) Next, the configuration and operation of the seedling transplanter 1 according to the present embodiment including the suppression load adjusting mechanism 2200 will be specifically described with reference mainly to FIGS.

  FIG. 14 is a left side view in the vicinity of the suppression load adjusting mechanism 2200 of the seedling transplanter 1 according to the embodiment of the present invention. FIG. 15 is a suppression load of the seedling transplanter 1 according to the embodiment of the present invention. FIG. 10 is a plan view of the vicinity of an adjustment mechanism 2200.

  The seedling transplanter 1 as a transplanter includes a planting device 300 and a pressure suppression mechanism 2100. The planting device 300 is a device for planting the seedling 22 as a transplant. The crushing mechanism 2100 is a mechanism that crushes the soil by applying a crushing load to the soil around the planted seedling 22.

  Furthermore, the seedling transplanting machine 1 includes a suppression load adjusting mechanism 2200. The pressure reduction load adjustment mechanism 2200 has a pressure reduction load adjustment lever 2220 as a pressure reduction load adjustment tool that can be operated by the operator, and is a mechanism that adjusts the pressure reduction load.

  Further, the pressure suppression mechanism 2100 includes left and right pressure suppression wheels 13 and a pressure suppression frame 2120. The left and right pressure-reducing wheels 13 are attached to the pressure-reducing frame 2120 at substantially symmetrical positions with respect to the left-right direction of the aircraft. The pressure reducing frame 2120 is provided so as to be rotatable in the vertical direction around a first rotation fulcrum shaft 2121 provided in the main frame 17 extending in the horizontal direction.

  The suppression load adjustment mechanism 2200 includes a suppression load adjustment lever 2220 and a suppression load adjustment lever guide 2230. The pressure reducing load adjusting lever 2220 is configured to rotate in the vertical direction about a left and right lever fulcrum shaft 2221 supported by the main frame 17, and is locked to a holding groove provided in the pressure reducing load adjusting lever guide 2230. Thus, it is held at a desired position.

  The pressure reducing load adjusting lever guide 2230 includes a plurality of holding grooves 2231 arranged in the vertical direction, and the pressure reducing load adjusting lever 2220 is engaged with an arbitrary holding groove 2231.

  The pressure reducing load adjusting lever 2220 and the pressure reducing frame 2120 are connected via a connecting rod 2232 in the vertical direction. The pressure reducing load adjusting lever 2220 is provided with a left and right mounting shaft 2233 so as to be rotatable, and a rod guide member 2234 that rotates together with the mounting shaft 2233 is provided. The rod guide member 2234 has a hole through which the connecting rod 2232 passes. A lower end portion of the connecting rod 2232 is connected to a rear end portion of the pressure suppressing frame 2120 via a connecting pin 2235. The connecting rod 2232 and the pressure reducing load adjusting spring 2240 are arranged at the center of the left and right with respect to the pair of left and right pressure reducing wheels 13. Accordingly, the connecting rod 2232 can slide up and down with respect to the rod guide member 2234 while being guided by the hole of the rod guide member 2234 in accordance with the vertical rotation of the pressure suppressing frame 2120. A spring receiving plate 2236 is provided below the connecting rod 2232. A pressure reducing load adjusting spring 2240 that is a compression spring is provided between the rod guide member 2234 and the spring receiving plate 2236 and on the outer periphery of the connecting rod 2232. Accordingly, the pressure reducing frame 2120 is urged downward by the pressure reducing load adjusting spring 2240 to obtain a pressure reducing load of the pressure reducing wheel 13, and the pressure reducing load adjusting spring 2240 is operated by operating the pressure reducing load adjusting lever 2220 in the vertical direction. By adjusting the position of the upper end portion of the spring, the urging force of the pressure reduction load adjustment spring 2240 is adjusted to adjust the pressure reduction load applied by the pressure reduction wheel 13. The connecting rod 2232 and the pressure reducing load adjusting spring 2240 are arranged at the center of the left and right with respect to the pair of left and right pressure reducing wheels 13.

  A forced raising arm 2237 is provided for raising the pressure-reducing wheel 13 by moving the pressure-reducing frame 2120 upward when the machine is turning. The forced raising arm 2237 is configured to rotate in the vertical direction around a second rotation fulcrum shaft 2238 provided in the main frame 17 and extending in the horizontal direction. The forcible ascending arm 2237 is provided with a connecting long hole 2239 which is a long hole for forcibly rising, a connecting shaft 2241 is provided at the rear end of the pressure reducing frame 2120, and the connecting long hole 2239 is connected to the connecting shaft. By inserting 2241, the forced raising arm 2237 and the pressure reducing frame 2120 are connected. In addition, one end of a forced raising cable 2242 for rotating the forced raising arm 2237 to the upper side is connected to the forced raising arm 2237. The other end of the forcibly rising cable 2242 is connected to a hydraulic / planting lever 4600 described later. Therefore, the forcible ascending arm 2237 is rotated upward through the forcible ascending cable 2242 in accordance with the operation to the ascending operation position where the aerial body is raised by the hydraulic pressure / planting lever 4600 when the body is turned, etc. Rotates upward against the compression-type pressure reducing load adjusting spring 2240 to move the pressure reducing wheel 13 upward.

  The forced lifting arm 2237 is used for forced lifting when the hydraulic pressure / planting lever 4600 is operated at a lowering operation position for lowering the airframe or a planting operation position for planting operation during normal planting work or the like. Since the cable 2242 is slackened, it is in a downwardly lowered posture with the tip side facing downward, and can freely rotate up and down within a predetermined range. The main frame 17 is provided with a forcibly rising arm stopper 2243 for preventing the forcibly rising arm 2237 from rotating too much downward due to contact with the forcibly rising arm 2237. Further, when the hydraulic / planting lever 4600 is operated to the raising operation position, the forcible raising cable 2242 is pulled upward, so that the forcibly raising arm 2237 is rotated upward and the tip side is directed upward. After that, the posture is raised. Accordingly, when the pressure-reducing wheel 13 is moved upward by the forced raising arm 2237, the forced raising arm 2237 rotates in an angle range from the rearward lowered posture to the rearward raised posture. The amount of upward movement of the frame 2120 can be obtained, and the pressure suppression frame 2120 can be efficiently moved upward.

  By the way, the left and right pressure-reducing wheels 13 are attached to the pressure-reducing frame 2120 via a right-and-left inclination angle adjusting mechanism 2244 so that the inclination angle in the left-right direction can be adjusted. The left / right inclination angle adjusting mechanism 2244 includes a left / right mounting base plate 2245 fixedly provided to the pressure reducing frame 2120, and a left / right axial support plate 2247 for supporting the rotation center shaft 2246 of the pressure reducing wheel 13. Two pressure-reducing wheel mounting bolts 2249 provided on the shaft support plate 2247 are inserted into arc-shaped angle adjusting slots 2248 provided on the base plate 2245. Accordingly, by loosening the two pressure-reducing wheel mounting bolts 2249 and moving them along the arc-shaped angle adjusting elongated hole 2248, the left-right inclination angle of the rotation center shaft 2246 is changed, and the left-right inclination of the pressure-reducing wheel 13 is changed. The angle is changed. It should be noted that the angle adjusting long hole 2248 has a lower portion of the pressure-reducing wheel 13 in the rear view of the body so that the left-right position of the lower portion (grounding portion) of the pressure-reducing wheel 13 does not change as much as possible regardless of the adjustment by the right / left inclination angle adjusting mechanism 2244 It is comprised in the circular arc shape centering on (grounding part). Thereby, since the left-right inclination posture of the pressure wheel 13 can be changed without changing the interval between the left and right pressure wheels 13, there is no interference with the seedling 22 due to the movement of the left and right pressure wheels 13 to the left and right, and the pressure is reduced. A desired soil pressure-reducing state can be obtained by changing the pressure-reducing direction of the wheel 13.

  The pressure reducing load adjusting spring 2240 may be a tension spring instead of the compression spring described above. When a tension spring is used as the suppression load adjustment spring 2240, the connecting rod 2232 is removed, the hook at the upper end of the tension spring is hooked into the hole of the rod guide member 2234, and the connection pin 2235 is inserted into the hook at the lower end of the tension spring. It is caught in the hole of the suppression frame 2120. Accordingly, the pressure-reducing frame 2120 is biased upward by the tension-type pressure-reducing load adjustment spring 2240, and the pressure-reducing load of the pressure-reducing wheel 13 is adjusted to a load smaller than the load due to the weight of the pressure-reducing wheel 13 and the pressure-reducing frame 2120. It is possible to adjust the urging force of the suppression load adjusting spring 2240 by adjusting the position of the upper end of the suppression load adjustment spring 2240 by operating the suppression load adjustment lever 2220 in the vertical direction. It has a configuration to adjust. In the above description, the hook at the lower end portion of the tension spring is hooked into the hole of the pressure suppression frame 2120 in which the connecting pin 2235 is inserted. However, the latch is provided with a hole for hooking the hook of the tension spring at the rear end portion of the pressure suppression frame 2120. It is good also as a structure which attaches the member for use.

  Further, the holding groove 2231 of the pressure reducing load adjusting lever guide 2230 is provided with protrusions 2250 at both ends in the vertical direction as the operation direction of the pressure reducing load adjusting lever 2220, and the pressure reducing load adjusting lever 2220 held by the holding groove 2231 is provided. It is prevented from coming off from the holding groove 2231.

  Therefore, by switching between the tension spring and the compression spring as the pressure reducing load adjusting spring 2240, the direction in which the pressure reducing load adjusting lever 2220 is urged in the holding groove 2231 of the pressure reducing load adjusting lever guide 2230 is upside down. The direction in which the pressure reducing load adjusting lever 2220 is urged by the protrusions 2250 provided at both ends in the vertical direction, which is the operation direction of the pressure reducing load adjusting lever 2220 of the holding groove 2231, is any direction. However, it is possible to prevent the pressure reducing load adjusting lever 2220 from coming off the holding groove 2231 and maintain a desired pressure reducing load, and to prevent the pressure reducing wheel 13 from moving up and down unexpectedly, thereby improving the safety of the transplanting operation.

  In addition, as shown in FIG. 38, you may comprise the pressure reduction load adjustment mechanism 2200. FIG. The pressure reducing load adjusting mechanism 2200 has the same structure as described above with respect to the pressure reducing load adjusting lever 2220 and the pressure reducing load adjusting lever guide 2230, but the upper end portion of the forcibly rising arm 2237 is connected to the pressure reducing load adjusting lever 2220 to forcibly raise. A connecting rod 2232 is connected to the lower end of the arm 2237. A rod guide plate 2251 is fixed to the rear end portion of the pressure suppressing frame 2120, and a lower portion of the connecting rod 2232 is inserted into a guide tube 2252 provided on the rod guide plate 2251. A male screw groove is formed on the outer peripheral surface of the connecting rod 2232, and an auxiliary pressure reducing load adjusting member 2253 that engages with the male screw groove is provided on the upper portion of the connecting rod 2232. A compression-type suppression load adjustment spring 2240 is provided on the outer periphery of the connecting rod 2232 between the auxiliary suppression load adjustment member 2253 and the rod guide plate 2251. Therefore, by operating the suppression load adjustment lever 2220 in the vertical direction, the secondary suppression load adjustment member 2253 provided on the connecting rod 2232 moves up and down via the forced raising arm 2237, and the biasing force of the suppression load adjustment spring 2240 is increased. It is the structure which adjusts and the suppression load by the suppression wheel 13 is adjusted. Further, a lower limit restricting member 2255 that is screwed into the male screw groove is provided at the lower end portion of the connecting rod 2232, and the rod guide plate 2251 comes into contact with the lower limit restricting member 2255 from above, so that the pressure reducing wheel 13 and the pressure reducing frame 2120 are connected. The downward movement is regulated. By rotating the lower limit regulating member 2255 and moving it vertically along the connecting rod 2232, the lower limit position in the vertical movement of the pressure reducing wheel 13 and the pressure reducing frame 2120 can be adjusted. A connecting rod stopper 2254 is provided at the upper end of the connecting rod 2232 to restrict the connecting rod 2232 from being tilted forward. The left and right pressure-reducing wheels 13 and therefore the pressure-reducing frame 2120 move upward to change the connecting rod 2232 into a forward downward inclined posture, and the connecting rod stopper 2254 comes into contact with the forcible ascending arm 2237 from the rear side. Since the portion does not move any further, the upward movement of the left and right pressure wheels 13 and the pressure frame 2120 is restricted. Note that the base portion (outer cable portion) of the forcibly rising cable 2242 connected to the forcibly rising arm 2237 is configured to be supported by the pressure reducing load adjusting lever 2220.

  As a result, when the pressure-reducing wheel 13 is forcibly raised by the rotation of the forced raising arm 2237, the forced raising arm 2237 can be easily turned without the urging force of the pressure-reducing load adjustment spring 2240 acting. Since the forcible raising arm 2237 rotates beyond the dead point to the side away from the connecting rod stopper 2254, the pressure reducing wheel 13 can be raised by a desired raising amount without the connecting rod stopper 2254 getting in the way. Further, by rotating the auxiliary pressure reducing load adjusting member 2253 and moving it up and down along the connecting rod 2232, the biasing force of the pressure reducing load adjusting spring 2240 can be finely adjusted to adjust the pressure reducing load by the pressure reducing wheel 13. it can.

  In the above-described configuration, the urging force of the pressure reducing load adjustment spring 2240 may be adjusted in conjunction with the change of the seedling planting depth by the planting depth adjustment mechanism 700. Specifically, a depth lever 730, which will be described later, as a planting depth adjuster for adjusting the planting depth of the seedling 22, and a suppression load adjustment lever 2220 or a suppression load adjustment lever guide 2230 are connected to an interlocking rod or If it connects with the connection mechanism 2256 for planting depths, such as an interlocking cable, and the planting depth of a seedling is adjusted to the deep side, if it is set as the structure linked so that the position of the suppression wheel 13 may become an upper side. Good.

  (B) Next, the configuration and operation of the seedling transplanter 1 according to the present embodiment including the tray feed rod engaging / disengaging lever 3200 will be specifically described with reference mainly to FIGS. 16 and 17.

  FIG. 16 is a left side view (part 1) of the vicinity of the tray feed rod engaging / disengaging lever 3200 of the seedling transplanter 1 according to the embodiment of the present invention, and FIG. 17 is a seedling according to the embodiment of the present invention. It is the left view (the 2) of tray feed rod engagement lever 3200 vicinity of the transplanter 1. FIG.

  FIG. 16 shows a position where the tray feed rod 121 is engaged with the groove between the seedling pots 21, and FIG. 17 shows that the tray feed rod 121 is disengaged from the groove between the seedling pots 21. The position status is shown.

  16 and 17, the illustration of the tray 20 and the seedling pot 21 is omitted, and the illustration of the tray feed rod engaging / disengaging lever return spring 3300 is also omitted in FIG.

  The seedling transplanter 1 includes a tray conveyance path 111, an extraction member 260, and a tray feed rod 121. The tray conveyance path 111 is a conveyance path that conveys the tray 20 on which the seedling 22 to be planted is placed by vertical feeding and is moved in the left-right direction of the machine body. The extraction member 260 is a member that extracts the seedling 22 from the tray 20 so that the seedling 22 is supplied to the planting device 300. The tray feed rod 121 engages with a groove portion between the seedling pots 21 as a predetermined portion of the tray 20 and performs vertical feed at the timing when the tray transport path 111 reaches the right or left moving end of the machine body. It is a rod as a tool.

  Further, the seedling transplanter 1 includes a tray feed rod engaging / disengaging lever 3200.

  The tray feed rod engagement / disengagement lever 3200 is a lever as a vertical feed engagement / disengagement tool that engages / disengages the tray feed rod 121 engaged with the groove between the seedling pots 21 according to the operation of the operator.

  The tray feed rod engagement / disengagement lever 3200 is arranged on the left side. Therefore, a right-handed worker who works while standing on the left side of the machine body can easily operate the tray feed rod engagement / disengagement lever 3200. In a normal specification in which the seedling tank is stopped on the left side when the tray 20 is fed forward, an operator standing on the left side of the machine body can easily move the tray feed rod engaging lever 3200 when the seedling tank is stopped. Can be operated.

  More specifically, the configuration and operation of the seedling transplanter 1 of the present embodiment relating to the tray feed rod engaging / disengaging lever 3200 will be described as follows.

  The tray feed rod engaging / disengaging member 3100 is a substantially V-shaped member in a side view.

The upper end portion of the tray feed rod engaging / disengaging member 3100 is formed in the shape of a bent bowl.
For this reason, the tray feed rod 121 is locked to the upper end of the tray feed rod engaging / disengaging member 3100 when the tray feed rod engaging / disengaging lever is operated. The upper end portion of the tray feed rod engaging / disengaging member 3100 hardly interferes with the vertical feed of the tray 20 when the tray feed rod engaging / disengaging lever is not operated.

  A tray feed rod engagement / disengagement member pin 3110 for rotatably attaching the tray feed rod engagement / disengagement member 3100 to the airframe side is inserted in the bent portion of the tray feed rod engagement / disengagement member 3100.

  The tray feed rod engaging / disengaging lever 3200 is a substantially V-shaped member in a side view.

  The upper end of the tray feed rod engaging / disengaging lever 3200 is gripped by the operator when the tray feeding rod engaging / disengaging lever is operated. The upper end portion of the tray feed rod engagement / disengagement lever 3200 is substantially perpendicular to the opening surface of the tray 20 when the tray feed rod engagement / disengagement lever is not operated, so that the operator can easily grasp it.

  A tray feed rod engagement / disengagement lever pin 3210 for pivotally attaching the tray feed rod engagement / disengagement lever 3200 to the lower end portion of the tray feed rod engagement / disengagement member 3100 is inserted into the lower end portion of the tray feed rod engagement / disengagement lever 3200. Yes. The tray feed rod engagement / disengagement lever pin 3210 is loosely fitted in a tray feed rod engagement / disengagement lever pin slit 3211 provided on the machine body side. Further, the upper end of the tray feed rod engaging / disengaging lever return spring 3300 is connected to the tray feed rod engaging / disengaging lever pin 3210, and the lower end of the tray feeding rod engaging / disengaging lever return spring 3300 is connected to the airframe side. Yes.

  The bent portion of the tray feed rod engaging / disengaging lever 3200 is in contact with the upper portion of the tray feed rod engaging / disengaging member 3100 so that the tray feed rod engaging / disengaging member 3100 is pushed and rotated.

  Therefore, when the tray feed rod engagement / disengagement lever 3200 is pulled toward the rear of the machine body, the bent portion of the tray feed rod engagement / disengagement lever 3200 pushes the upper portion of the tray feed rod engagement / disengagement member 3100.

  Then, the tray feed rod engaging / disengaging member 3100 rotates downward, the tray feed rod 121 is locked to the upper end of the tray feed rod engaging / disengaging member 3100, and the tray feed rod 121 is engaged from the groove between the seedling pots 21. Get rid of.

  At this time, since there is a gripping force of the operator with respect to the tray feed rod engaging / disengaging lever 3200, the tray feed rod engaging / disengaging lever pin 3210 resists the restoring force of the tray feeding rod engaging / disengaging lever return spring 3300, and the tray feeding rod engaging / disengaging lever. It moves to the upper side of the pin slit 3211.

  When the gripping force of the operator with respect to the tray feed rod engagement / disengagement lever 3200 is lost, the tray feed rod engagement / disengagement lever pin 3210 is moved by the restoring force of the tray feed rod engagement / disengagement lever return spring 3300. Move down. At this time, the tray feed rod engaging / disengaging lever 3200 returns to its original position, and the tray feed rod 121 is connected to a rotatable tray feed rod arm 3400 that supports the tray feed rod 121. Engage with the groove between the seedling pots 21 by the restoring force of 3500.

  (C) Next, with reference mainly to FIGS. 18 and 19, the configuration of the seedling transplanter 1 of the present embodiment in which the depth lever 730, the tilt lever 4100, and the like are arranged on the same side of the display unit 630. The operation will be specifically described.

  FIG. 18 is a schematic rear view of the vicinity of the display unit 630 of the seedling transplanter 1 according to the embodiment of the present invention. FIG. 19 is a display unit of the seedling transplanter 1 according to the embodiment of the present invention. 6 is a schematic left side view of the vicinity of 630. FIG.

  The seedling transplanter 1 includes a steering handle 8, a display unit 630, a depth lever 730, and a tilt lever 4100. The steering handle 8 is a handle provided at the rear of the airframe and gripped by the operator. The display unit 630 is a display unit that is provided in the vicinity of the steering handle 8 and displays information. The depth lever 730 is a lever as a planting depth adjuster that adjusts the planting depth of the seedling 22 to be planted. The tilt lever 4100 is a lever as a planting device tilt adjuster that adjusts the tilt of the planting device 300.

  The depth lever 730 and the tilt lever 4100 are disposed on the left side of the display unit 630.

  Needless to say, the depth lever 730 and the tilt lever 4100 may be arranged on the right side of the display unit 630, in other words, only need to be arranged on the same side of the right side or the left side of the display unit 630.

  The configuration and operation of the seedling transplanter 1 according to the present embodiment regarding the arrangement of the depth lever 730, the inclination lever 4100, and the like will be described in more detail as follows.

  On the left side of the operation panel 601, not only the depth lever 730 and the tilt lever 4100 but also the main clutch operation lever 4200 and the finger main clutch operation lever 4300 are arranged. In the center of the operation panel 601, a planting cut-off button 620, an engine switch 4400, a choke knob 4500, and the like are arranged. On the right side of the operation panel 601, a hydraulic pressure / planting lever 4600, a main transmission lever 4700, a throttle lever 4800, and the like are arranged.

  A right-handed worker who works while standing on the left side of the aircraft can easily operate the main transmission lever 4700 on the right side of the aircraft with the right hand while operating the main clutch operation lever 4200 on the left side of the aircraft with the left hand.

  Such a right-handed operator can easily operate the depth lever 730 on the left side of the aircraft.

  Further, an operator who works while standing on either the left side or the right side of the aircraft can easily operate the engine switch 4400 in the center of the aircraft when an emergency engine stop is required.

  The main clutch operation lever 4200, the hydraulic pressure / planting lever 4600, and the like are substantially perpendicular to the upper surface 601a of the display unit 630 in the engaged state, but are inclined toward the rear of the aircraft and are upright with respect to the vertical direction. Not. Therefore, there is almost no possibility that the main clutch operation lever 4200, the hydraulic pressure / planting lever 4600, and the like prevent the empty tray 20 from being discharged.

  The seedling tank 4900 is arranged so as to cover the operation panel 601. Therefore, the seedling tank 4900 serves as a sunshade, and the visibility of the liquid crystal display on the operation panel 601 is improved.

  (D) Next, the configuration and operation of the seedling transplanter 1 of the present embodiment including the finger main clutch operation lever 4300 will be specifically described with reference mainly to FIG.

  FIG. 20 is a perspective view of the vicinity of the finger main clutch operation lever 4300 of the seedling transplanter 1 according to the embodiment of the present invention.

  FIG. 20 shows a position state where the main clutch on / off state is disengaged by the main clutch operation lever 4200.

  The seedling transplanter 1 includes a main clutch operation lever 4200 and a finger main clutch operation lever 4300. The main clutch operation lever 4200 is a lever as a main clutch operation tool that is an object of the operator's main clutch operation and changes the on / off state of the main clutch and the on / off state of the braking device. The finger main clutch operation lever 4300 is provided in the vicinity of the steering handle 8 and is a lever as a finger main clutch operation tool that is an object of the operator's finger main clutch operation and changes the on / off state of the main clutch.

  If the finger main clutch operation is performed when the main clutch on / off state is off, the main clutch on / off state is changed from off to on. When the finger main clutch operation is performed when the main clutch on / off state is on, the main clutch on / off state is changed from on to off. However, even if the finger main clutch operation is performed, the on / off state of the braking device is not changed.

  Therefore, the operator can easily change the on / off state of the main clutch by manually operating the finger main clutch while holding the steering handle 8.

  Then, the operation for changing the on / off state of the braking device is not performed as the finger main clutch operation by the finger main clutch operation lever 4300 so that the occurrence of an erroneous operation is suppressed.

  The configuration and operation of the seedling transplanter 1 of the present embodiment relating to the finger main clutch operation lever 4300 will be described in more detail as follows.

  The cable 5000 serves as a main clutch cable that changes the on / off state of the main clutch, and also serves as a brake device cable that changes the on / off state of the brake device.

  A cable 5000 is connected to the upper end of the cable arm 5010, and a cable arm recess 5011 with which the main clutch operation lever cam 5230 abuts is provided at the lower end of the cable arm 5010.

  Finger main clutch operation lever / cable arm rotation fulcrum 5321 is a dual-purpose fulcrum for rotating finger main clutch operation lever 4300 around its lower end and for rotating cable arm 5010 around its center. .

  An operation cam 5310 is coupled to the finger main clutch operation lever 4300 so as to be rotatable about an operation cam rotation fulcrum 5313 provided on the finger main clutch operation lever 4300.

  A spring 5100 is connected between the operation cam 5310 and the main clutch operation lever 4200.

  The operation cam 5310 has an input operation protrusion 5311 and a cutting operation protrusion 5312.

  The position of the on-operation protrusion 5311 and the position of the cutting operation protrusion 5312 are opposite to the operation cam rotation fulcrum 5313.

  The main clutch operation lever 4200 has an input operation recess 5211 to which the input operation protrusion 5311 is engaged, and a cut operation recess 5212 to which the cut operation protrusion 5312 is engaged.

  A main clutch operation lever cam 5230 that contacts the cable arm recess 5011 is provided at the lower end of the main clutch operation lever 4200.

  The main clutch operation lever front-rear rotation fulcrum 5221 is a fulcrum that causes the main clutch operation lever 4200 to rotate back and forth about its central portion. The main clutch operation lever left-right rotation fulcrum 5222 is a fulcrum that causes the main clutch operation lever 4200 to turn left and right about its lower end.

  When the main clutch is turned on and off, an operation that turns the braking device on and off requires a two-step process to suppress the occurrence of erroneous operations. More specifically, a first step of rotating the main clutch operation lever 4200 left and right toward the inside of the aircraft, a second step of rotating the main clutch operation lever 4200 back and forth toward the rear of the aircraft, Is required. Furthermore, the spring 5100 has a function as a braking operation return spring of the main clutch operation lever 4200 so that the device configuration is simplified.

  The configuration and operation of the seedling transplanter 1 of the present embodiment relating to the finger main clutch operation lever 4300 will be described more specifically with reference to FIGS. 21 to 24 as follows.

  21 to 24 are schematic right side views (parts 1 to 4) of the vicinity of the finger main clutch operation lever 4300 of the seedling transplanter 1 according to the embodiment of the present invention.

  As described above, when the finger main clutch operation is performed when the main clutch on / off state is off, the on / off state of the main clutch is changed from off to on.

  That is, when the main clutch operation lever 4200 is turned off by the main clutch operation lever 4200 and the finger main clutch operation lever 4300 is rotated against the spring 5100 in response to the finger main clutch operation (see FIG. 21), the on-operation projection 5311 of the operation cam 5310 which has been in the on-operation preparation state is engaged with the on-operation recess 5211 (see FIG. 22).

  Of course, the finger main clutch operation lever 4300 is not changed so that the relative posture of the operation cam 5310 with respect to the finger main clutch operation lever 4300 does not change until the insertion operation protrusion 5311 is engaged with the input operation recess 5211. Is provided with an operation cam stopper and the like.

  Next, when the on-operation projection 5311 of the operation cam 5310 in the on-operation preparation state is engaged with the on-operation recess 5211 (see FIG. 22, as described above), the main clutch operation lever 4200 is rotated. Thus, the on / off state of the main clutch is changed from off to on (see FIG. 23).

  More specifically, when the spring 5100 is extended and the dead center of the operation cam 5310 is exceeded, the main clutch operation lever cam 5230 does not contact the cable arm recess 5011, so that the cable 5000 moves toward the front of the fuselage. The cable arm 5010 is rotated so as to be pulled.

  Then, the on / off state of the main clutch is changed from off to on (see FIG. 23, as described above). After that, when the finger main clutch operation is released, the finger main clutch operation lever 4300 is restored by the restoring force of the spring 5100. Returns to the pre-rotation state, and the operation cam 5310 is ready to be turned off (see FIG. 24).

  Thus, the spring 5100 has a function as a finger main clutch operation return spring of the finger main clutch operation lever 4300 so that the device configuration is simplified.

  As described above, when the finger main clutch operation is performed when the main clutch on / off state is on, the main clutch on / off state is changed from on to off.

  That is, when the main clutch operation lever 4200 is turned on by the main clutch operation lever 4200 and the finger main clutch operation lever 4300 is rotated against the spring 5100 in response to the finger main clutch operation, When the cutting operation projection 5312 of the operation cam 5310 in the operation ready state is engaged with the cutting operation recess 5212, the main clutch operation lever 4200 is rotated, so that the main clutch is turned on and off. When the finger main clutch operation is released after that, the finger main clutch operation lever 4300 returns to the pre-rotation state by the restoring force of the spring 5100, and the operation cam 5310 enters the on operation preparation state. .

  Further, as described above, even when the finger main clutch operation is performed, the on / off state of the braking device is not changed.

  That is, when the on / off state of the braking device is turned on by the main clutch operation lever 4200, even if the finger main clutch operation lever 4300 is rotated according to the finger main clutch operation, the turning operation projection 5312 is The on / off projection 5311 is not engaged with the on / off operation recess 5211 and the on / off state of the braking device is not changed from on to off.

  More specifically, as described above, the operation to turn on / off the braking device requires a step of rotating the main clutch operation lever 4200 left and right toward the inside of the fuselage. When the cut state is turned on, the cut operation protrusion 5312 cannot engage with the notch-shaped cut operation recess 5212, and the on / off state of the braking device is not changed from on to off.

  (E) Next, with reference mainly to FIGS. 25A and 25B, the configuration and operation of the seedling transplanter 1 of the present embodiment in which the ejected tray 20 abuts against the bottom of the upper end portion 6100 u of the tray lowering path 6100. This will be specifically described.

  FIG. 25A is a left side view (part 1) of the vicinity of the tray conveyance path 111 of the seedling transplanter 1 according to the embodiment of the present invention, and FIG. 25B is a diagram of the seedling transplanter 1 according to the embodiment of the present invention. FIG. 4 is a partially enlarged left side view in the vicinity of a tray conveyance path 111.

  The tray conveyance path 111 has a tray lowering path 6100 and a tray lifting path 6200. The tray lowering path 6100 is a path along which the tray 20 on which the seedling 22 to be planted is placed is lowered. The tray ascending path 6200 is a path that is provided below the tray descending path 6100 and is conveyed so that the tray 20 from which the seedlings 22 are taken out rises.

  The inclination of the upper end 6100u of the tray lowering path 6100 is smaller than the inclination of the lower end 6100d of the tray lowering path 6100, and the inclination of the upper end 6200u of the tray rising path 6200 is smaller than the inclination of the lower end 6200d of the tray rising path 6200. small.

  The tray 20 from which the seedlings 22 have been taken out is discharged from the upper end 6200u of the tray ascending path 6200, and the tray 20 discharged from the upper end 6200u of the tray ascending path 6200 hits the bottom of the upper end 6100u of the tray descending path 6100. Touch.

  More specifically, the empty tray 20 from which the seedling 22 has been removed passes through the main clutch operation lever 4200, the hydraulic / planting lever 4600, and the main transmission lever 4700 in the vicinity of the steering handle 8, and is discharged. The The upper end portion 6210u of the tray raising path guide frame 6210 is bent toward the steering handle 8 so that the empty tray 20 can be easily taken out.

  The tray lowering path transport plate 6101 serves as a base plate for the tray lowering path 6100 that is transported so that the tray 20 is lowered, and is an empty space that is transported so as to be raised in the tray lifting path 6200. The two strip-shaped plates are bent at the upper end and serve as an under guide plate for the tray 20. Since the tray lowering path conveyance plate 6101 as the under guide plate partially presses the bottom surface of the empty tray 20, a large frictional resistance is not generated, and the sliding state of the removed tray 20 does not deteriorate.

  Further, the push clip 6221 faces downward so that the empty tray 20 conveyed so as to rise in the tray raising path 6200 does not interfere with the tray 20 conveyed so as to descend in the tray lowering path 6100. An urged empty tray holding guide plate 6220 is provided at the bottom of the upper end 6100 u of the tray lowering path 6100.

  Of course, since the push clip 6221 is on the upper side of the empty tray holding guide plate 6220, there is almost no possibility that the empty tray 20 pushed up will interfere with the push clip 6221.

  (F) Next, the configuration and operation of the seedling transplanter 1 of the present embodiment including the tray presence / absence detection mechanism 7100 will be specifically described with reference mainly to FIG.

  FIG. 26 is a plan view of the vicinity of the tray presence / absence detection mechanism 7100 of the seedling transplanter 1 according to the embodiment of the present invention.

  FIG. 26 shows both a position state where the tray sensor arm 7112 is pressed from the inside of the machine body and a position state where the tray sensor arm 7112 is not pushed from the inside of the machine body.

  However, in FIG. 26, the illustration of the tray 20 pressing the tray sensor arm 7112 from the inside of the machine body is omitted.

  The seedling transplanter 1 includes a tray presence / absence detection mechanism 7100 and a tray conveyance path moving end arrival detection mechanism 7200. The tray presence / absence detection mechanism 7100 is a mechanism that is provided in the tray conveyance path 111 and detects whether or not the tray 20 is in the tray conveyance path 111. The tray conveyance path moving end arrival detection mechanism 7200 is a mechanism that is provided in the machine body and detects whether or not the tray conveyance path 111 has reached the right or left movement edge part of the machine body.

  The tray presence / absence detection mechanism 7100 includes a tray sensor arm 7112, a tray sensor arm left-right rotation fulcrum 7113, and a tray sensor arm return spring 7114.

  The tray transport path moving end arrival detection mechanism 7200 includes a tray sensor 7110 and a tray sensor switch 7111.

  The tray sensor 7110 is a sensor that detects the on / off state of the tray sensor switch 7111 that is turned on when pressed by the tray sensor arm 7112.

  The tray sensor arm 7112 is pushed back by the tray sensor arm return spring 7114 when the tray 20 is not in the tray transport path 111, is rotated about the tray sensor arm left-right rotation fulcrum 7113, and pushes the tray sensor switch 7111. It is a left-right pivoting arm. The curved portion 7112r of the tray sensor arm 7112 is a portion pushed from the inside of the machine body by the tray 20, and is configured using an arc-shaped round bar member.

  When the tray presence / absence detection mechanism 7100 detects that the tray 20 is not on the tray conveyance path 111, the tray conveyance path moving end arrival detection mechanism 7200 determines whether the tray conveyance path 111 has reached the movement end. Is detected, and it is detected that the tray transport path 111 has reached the moving end, and the movement of the tray transport path 111 in the left-right direction is stopped.

  However, when the tray presence / absence detection mechanism 7100 detects that the tray 20 is in the tray conveyance path 111, the tray conveyance path moving end arrival detection mechanism 7200 determines whether the tray conveyance path 111 has reached the movement end. Does not detect whether or not.

  More specifically, (1) when the tray 20 is not in the tray conveyance path 111, the portion of the tray sensor arm 7112 opposite to the curve sensor 7112 r with respect to the tray sensor arm left-right rotation fulcrum 7113 is the tray conveyance path. When the tray conveyance path 111 reaches the left moving end, the portion opposite to the curved portion 7112r interferes (contacts) with the tray sensor switch 7111 and protrudes to the tray conveyance path moving end. The arrival detection mechanism 7200 is turned on, the tray conveyance path 111 is stopped at the moving end on the left side of the machine body, and the operator can quickly replenish the tray 20, but (2) the tray 20 is in the tray conveyance path 111. Occasionally, the portion of the tray sensor arm 7112 opposite to the curved portion 7112r with respect to the tray sensor arm left-right pivot point 7113 is provided. However, even if the tray transport path 111 reaches the moving end on the left side without protruding to the outside (left side) of the tray transport path 111, the portion opposite to the curved portion 7112r interferes with (contacts with) the tray sensor switch 7111. ), The tray conveyance path moving end arrival detection mechanism 7200 remains OFF, and the tray conveyance path 111 cannot be stopped unnecessarily, so that a highly convenient and simple apparatus configuration is realized.

  A tray presence / absence detection mechanism 7100 is provided on the right side of the tray conveyance path 111, and when the tray conveyance path 111 reaches the moving end on the right side, a portion opposite to the curved portion 7112r interferes (contacts) with the tray sensor switch 7111. Then, the tray transport path moving end arrival detection mechanism 7200 is turned on, and the tray transport path 111 can be stopped at the moving end on the right side of the machine body.

  (G) Next, with reference mainly to FIGS. 27 and 28, the configuration and operation of the seedling transplanter 1 of the present embodiment including the tray descending path portal frame 8000 will be specifically described.

  FIG. 27 is a left side view of the vicinity of the tray conveyance path 111 of the seedling transplanter 1 according to the embodiment of the present invention (No. 2), and FIG. 28 is a seedling transplanter 1 according to the embodiment of the present invention. It is a top view of the tray conveyance path 111 vicinity of this.

The tray lowering path 6100 includes a tray lowering path transport plate 6101 and a tray lowering path portal frame 8000. The tray lowering path transport plate 6101 is a plate as a tray receiving plate that receives the bottom surface of the tray 20 that is transported so as to descend.
The tray lowering path portal frame 8000 is a frame that is provided above the tray lowering path transport plate 6101 and protrudes toward the rear of the machine body in a top view.

  The side portion 8000S of the tray descending path portal frame 8000 receives the side surface of the tray 20 that is conveyed so as to descend.

  Accordingly, the tray lowering path portal frame 8000 has a function as a side guide frame of the tray 20 that cooperates with the left and right tray pressing frames 8100 so that the apparatus configuration is simplified.

  The inclination of the rear end portion of the side part 8000S of the tray descending path portal frame 8000 is smaller than the inclination of the central part of the side part 8000S of the tray descending path portal frame 8000.

  The horizontal portion 8000L of the tray lowering path portal frame 8000 and the rear end portion of the tray lowering path transport plate 6101 are connected so as to be continuous.

  The position of the horizontal portion 8000L of the tray lowering path portal frame 8000 is a tray supply position that is the upper end portion 6100u of the tray lowering path 6100. Therefore, it is desirable that the tray lowering path portal frame 8000 is substantially horizontal in the vicinity of the lateral portion 8000L. Then, the worker can easily supply the tray 20. Even in the case where the tray supply amount is large, the vertical feed timing of the tray 20 is shifted due to the seedling weight, or the tray 20 supplied later slips down and the tray 20 supplied before is changed. There is almost no fear of crushing.

  The seedling holding mechanism 8200 is substantially provided at the lower end portion 6100d of the tray lowering path 6100 that presses the seedling 22 toward the rear of the machine body so that the leaves of the seedling 22 do not interfere with the tray vertical feeding device 120 or the extraction claw 261L. It is a U-shaped mechanism.

  The seedling presser mechanism 8200 has a seedling presser bar 8210 and left and right seedling presser bar support bars 8220.

  The seedling presser bar 8210 is configured by using a round bar member that hardly damages the seedling 22.

  The left and right seedling presser bar support bars 8220 are assembled to the left and right seedling presser bar support bar mounting stays 8240 attached to the tray lowering path gate-type frame 8000 using the left and right fixing nuts 8230, respectively.

  The fixing nut 8230 is inserted through a long hole 8221 provided in the seedling presser bar support bar 8220. Therefore, the operator can easily adjust the vertical and horizontal mounting positions of the seedling presser bar support bar 8220 according to the height of the seedling 22 and the like. At least one of the left and right fixing nuts 8230 is preferably a knob nut so that the mounting position of the seedling presser bar support bar 8220 can be adjusted more easily.

  (H) Next, the configuration and operation of the seedling transplanter 1 according to the present embodiment including the hydraulic / planting lever 4600 will be specifically described with reference mainly to FIGS.

  FIG. 29 is a perspective view of the vicinity of the hydraulic / planting lever 4600 of the seedling transplanter 1 according to the embodiment of the present invention, and FIGS. 30 to 35 show the seedling transplanter 1 according to the embodiment of the present invention. It is the left view (the 1st-six) of the hydraulic pressure / planting lever 4600 vicinity.

  30 to 32 show a locked position state in which the left / right tilt automatic control lock lever 9000 is tilted, and FIGS. 33 to 35 show an unlocked position in which the left / right tilt automatic control lock lever 9000 is not tilted. The state is shown.

  The lever rotation mechanism 9110 is a mechanism for rotating the hydraulic / planting lever 4600 left and right and back and forth according to the operator's lever operation.

  A lever roller 9120 that contacts the hydraulic pressure / planting control arm 9200 and the left / right tilt control arm 9300 is provided at the lower end of the hydraulic pressure / planting lever 4600.

  A hydraulic / planting control cable 9210 is connected to the lower end of the hydraulic / planting control arm 9200. The hydraulic / planting control cable 9210 serves as a hydraulic cable that changes the lifting control state of the traveling vehicle body 15 and also serves as a planting cable that changes the on / off state of the planting clutch 420. .

  A left / right tilt control cable 9310 is connected to the lower end of the left / right tilt control arm 9300. The left / right tilt control cable 9310 is a cable serving as a hydraulic cable that changes the left / right tilt control state of the traveling vehicle body 15.

  The hydraulic / planting control arm / left / right tilt control arm rotation fulcrum 9400 rotates the hydraulic / planting control arm 9200 around its upper end and rotates the left / right tilt control arm 9300 around its upper end. This is a dual-purpose fulcrum.

  Next, the lever position state of the hydraulic / planting lever 4600 will be described in detail.

  When the hydraulic / planting lever 4600 is pushed forward toward the front of the airframe, the lift control state of the traveling vehicle body 15 is the descent mode, and the on / off state of the planting clutch 420 is the on state. (See FIGS. 30 and 33).

  When the hydraulic / planting lever 4600 is pulled toward the rear of the aircraft, the lever is tilted rearward, the up-and-down control state of the traveling vehicle body 15 is the up mode, and the on / off state of the planting clutch 420 is the off state. (See FIGS. 32 and 35).

  In the lever neutral position state between the lever forward tilt position state and the lever rearward tilt position state, the lift control state of the traveling vehicle body 15 is the lowering mode, and the on / off state of the planting clutch 420 is the cut state.

  However, in the lever neutral position state where the hydraulic / planting lever 4600 is further tilted toward the right side of the aircraft, the elevation control state of the traveling vehicle body 15 is the fixed mode, and the planting clutch 420 is turned on / off. State (see FIGS. 31 and 34).

  Normally, the left / right tilt automatic control lock lever 9000 is tilted and the left / right tilt automatic control lock cam 9010 is brought into contact with the left / right tilt control arm 9300 so that the left / right tilt automatic control is performed with less burden on the operator. (See FIGS. 30 to 32). Then, the posture of the left / right tilt control arm 9300 is fixed to the left / right tilt automatic control posture in which the left / right tilt control arm 9300 is substantially upright.

  However, on slopes and the like, work that tilts the airframe is often performed, and therefore, right / left tilt manual control is often performed instead of left / right tilt automatic control. In such a case, the left / right tilt automatic control lock lever 9000 is not tilted, and the left / right tilt automatic control lock cam 9010 is not brought into contact with the left / right tilt control arm 9300 (see FIGS. 33 to 35). Then, when the lever position state of the hydraulic / planting lever 4600 is the lever forward tilt position state, the posture of the left / right tilt control arm 9300 is the same as the left / right tilt manual control posture in which the left / right tilt control arm 9300 is tilted rearward. Become. When the hydraulic / planting lever 4600 is in any other position, the lever roller 9120 comes into contact with the left / right tilt control arm 9300, so that the left / right tilt control arm 9300 is ultimately left / right tilt automatic control posture. It becomes.

  As described above, this transplanter rotates the pressure-suppressing member (13) that suppresses the soil around the transplant (22) planted in the field in the vertical direction around the first rotation fulcrum shaft (2121). A pressure reducing load adjusting spring (2240) for urging the pressure reducing frame (2120) is provided on the free pressure reducing frame (2120), and a position of the pressure reducing member (2240) is adjusted by adjusting the position of the end of the pressure reducing load adjusting spring (2240). A suppression load adjusting mechanism (2200) for adjusting the suppression load according to 13) is provided.

  Therefore, the position of the end of the pressure reducing load adjusting spring (2240) can be adjusted to adjust the pressure reducing load by the pressure reducing member (13) easily and accurately. The suppression load can be adjusted while checking the suppression state. The pressure reducing load adjusting mechanism (2200) includes a pressure reducing load adjusting lever (2220) for changing the position of the end portion of the pressure reducing load adjusting spring (2240), and a plurality of holding grooves for holding the pressure reducing load adjusting lever (2220). (2231) and a pressure reducing load adjusting lever guide (2230), and a pressure reducing load adjusting spring (2240) can be attached by either a tension spring or a compression spring, and the pressure reducing load adjustment of the holding groove (2231). Protrusions (2250) are provided at both ends of the lever (2220) in the operation direction to prevent the holding pressure reducing load adjusting lever (2220) from coming off.

  Therefore, since either the tension spring or the compression spring can be mounted as the pressure reducing load adjusting spring (2240), the pressure reducing load due to its own weight such as the pressure reducing frame (2120) and the pressure suppressing member (13) is insufficient for the desired pressure reducing load. In some cases, the pressure reducing load can be increased by mounting the pressure reducing load adjusting spring (2240) to urge the pressure suppressing member (13) downward. On the other hand, when the suppression load due to its own weight such as the suppression frame (2120) and the suppression member (13) exceeds a desired suppression load, the suppression load adjustment spring (2240) is applied to bias the suppression member (13) upward. ) Can be reduced. Then, by switching between a tension type spring and a compression type spring as the pressure reducing load adjusting spring (2240), the pressure reducing load adjusting lever (2220) is moved in the holding groove (2231) of the pressure reducing load adjusting lever guide (2230). Although the direction to be urged is reversed, the squeezing load adjusting lever (2220) is urged by the protrusions (2250) provided at both ends in the operation direction of the squeezing load adjusting lever (2220) of the holding groove (2231). The pressure reducing load adjusting lever (2220) can be prevented from coming off the holding groove (2231) regardless of the direction in which the pressure reducing member (13) is moved, and the pressure reducing member (13) can be moved up and down unexpectedly. To improve the safety of transplantation work.

  Further, in conjunction with the change of the planting depth of the implant (22) by the planting depth adjusting mechanism (700), the position of the end of the suppression load adjusting spring (2240) is adjusted by the suppression pressure adjusting mechanism (2200). The configuration is adjusted. Therefore, it can be made to become a desired suppression load irrespective of the change of the planting depth of a transplant (22).

  In addition, a forcible ascending arm (2237) that pivots up and down about the second pivot point (2238) is provided, and the forcibly ascending arm (2237) and the pressure reducing frame (2120) are elongated holes for forcibly ascending. (2239), and the forcible raising arm (2237) is rotated from the downward direction to the upward state, thereby rotating the suppression frame (2120) upward and the suppression member (13). The configuration is forcibly raised.

  Therefore, the pressure-suppressing member (13) can be retracted upward so as not to get in the way when the aircraft is turning. The forced ascending arm (2237) rotates on a rotation fulcrum shaft (second rotation fulcrum shaft 2237) different from the rotation fulcrum shaft (first rotation fulcrum shaft 2121) of the pressure reducing frame (2120). Since it moves, the arm length can be made shorter than the suppression frame (2120). Further, although the arm length of the forcible ascending arm (2237) is short, the forcible ascending arm (2237) is rotated from the downward-facing state to the upward-facing state, so that the pressure-reducing frame (2120) and thus the pressure-reducing member (13 ) Can be increased. Therefore, the pressure suppressing member (13) can be forcibly raised by a compact mechanism.

  Moreover, the left and right pressure-reducing members (13) for suppressing the soil are provided on the left and right sides of the transplant (22) planted in the field, and the ends of the left and right pressure-reducing members (13) on the transplant (22) side are provided. By rotating left and right around the center, the right and left inclined posture of the pressure suppressing member (13) can be changed without changing the interval between the left and right pressure suppressing members (13).

  Therefore, since the left-right inclination posture of the pressure-reducing member (13) can be changed without changing the interval between the left and right pressure-reducing members (13), the implant (22 ), And a desired soil pressure reduction state can be obtained by changing the pressure suppression direction by the pressure suppression member (13).

Claims (5)

In the transplanting machine provided with the planting tool (11) for planting the seedling (22) in the field, and the pressure suppressing member (13) for pressing down the soil around the planted seedling (22) ,
Wherein provided on the suppression member (13) freely pivoting of suppression frame (2120), the suppression frame (2120) a load adjusting spring biasing the (2240) provided Rutotomoni, upper end of the load adjusting spring (2240) And a load adjusting lever (2220) for adjusting the pressure reducing load of the left and right pressure suppressing members (13) by changing the position of the left and right pressure suppressing members (13) . The transplanter according to claim 1, wherein the traveling vehicle body (15) is provided with a lever guide (2230) having a plurality of holding grooves (2231) for holding the load adjusting lever (2220) . At both ends in the operation direction of the load adjusting lever (2220) of the plurality of retaining grooves (2231) is a characterized by forming each projection (2250) to prevent the load adjusting lever (2220) is out The transplanter according to claim 2 . A vehicle body elevating member (4600) for elevating and lowering the traveling vehicle body (15) is provided, and when the vehicle body elevating member (4600) is operated to the side where the traveling vehicle body (15) is elevated, the pressure suppressing frame (2120) rotates upward. transplanter according to any one of claims 1 to 3, characterized in that a configuration in which. A pair of left and right pressure suppression members (13) are provided,
Left and right of the suppression member (13), said seedlings (22) side lower portion configured to be rotatable in left and right to the center of the lateral inclination angle without changing the lateral spacing of the left and right of the suppression member (13) transplanter according to any one of claims 1 to 3, characterized in that a changeable capacity configuration.