Rice transplanter

Abstract

To provide a rice transplanter which can be folded without an interference of a guide rail when folding a seedling stand.SOLUTION: A rice transplanter includes: a foldable seedling stand 2 installed on a rear side of a vehicle 1 and with right-left side parts 2a being rotated to a center side part 2b; and a chemical spray device 5 having a guide rail 3 provided on a right-left direction and a spray part 4 which moves on the guide rail 3 in a right-left direction for applying the chemical. A right-left edges 3a of the guide rail 3 can be folded by being rotated to a center part 3b of the guide rail 3. The center part 3b of the guide rail 3 is supported to the seedling stand 2 by a support pillar 6 standing in a rotatable manner in a front-rear direction. When folding the seedling stand 2, the right-left edges 3a of the guide rail 3 is first folded and the support pillar 6 is rotated on a front side with respect to a normal posture state. Then, the seedling stand 2 is folded such that the folded guide rail 3 is sandwiched between the right-left side parts 2a of the folded seedling stand 2 and a center side part 2b of the seedling stand 2.SELECTED DRAWING: Figure 15

Description

[Technical Field]

[0001] The present invention relates to a rice transplanter equipped with a seedling carrier for planting seedlings. [Background technology]

[0002] Conventionally, there is known a rice transplanter in which both sides of a seedling-planting tray for planting seedlings are folded toward the center when not in use. For example, as shown in Patent Document 1, there is known a rice transplanter in which the seedling-planting tray has asymmetric left and right seedling-planting tray sections that are foldable in the left-right direction, the chemical spraying device includes a guide rail along the left-right direction and a mobile sprayer that is guided by the guide rail and moves laterally along the seedling-planting surface, the guide rail is composed of multiple divided guide rails with different left-right lengths and fixed to each seedling-planting tray section, and the longer divided guide rails are arranged so that they are located further forward than the shorter divided guide rails when in use. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-187942 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in such rice transplanters, even when the seedling tray is folded, the chemical spraying device is not folded.

[0005] The present invention takes into consideration the problems with conventional rice transplanters and aims to provide a rice transplanter that can be folded so that the guide rails do not get in the way when folding the seedling tray. [Means for solving the problem]

[0006] The first aspect of the present invention is A seedling loading platform installed at the rear of the vehicle body, with the left and right sides pivoting toward the center and foldable; A guide rail arranged in the left-right direction along the seedling loading table, and a chemical spraying device having a sprayer for applying chemicals that moves left and right on the guide rail, The left and right ends of the guide rail are foldable by rotating toward the center of the guide rail, The central portion of the guide rail is supported by a support pillar that is erected on the seedling loading table so as to be rotatable in the front-rear direction, This rice transplanter is characterized in that when folding the seedling tray, the left and right ends of the guide rail are first folded, the support pole is rotated forward compared to its normal position, and the seedling tray is then folded so that the folded guide rail is sandwiched between the left and right sides of the folded seedling tray and the central side of the seedling tray.

[0007] The second aspect of the present invention is This is a first rice transplanter of the present invention, which is provided with a regulating member that regulates the rotation of the left and right sides of the seedling loading platform to a predetermined position when folding them toward the central side, so that the seedling loading platform does not come into contact with the guide rail or its accessories when folded toward the central side.

[0008] The third aspect of the present invention is The left and right ends of the guide rail are detachably supported by support frames that are rotatably erected outward on the left and right sides of the folding seedling tray, This is a second rice transplanter of the present invention, in which when the left and right ends of the guide rail are folded, the support frame is separated from the left and right ends of the guide rail, and the support frame opens outward from the upright state so that it is parallel to the surfaces of the left and right sides of the seedling carrying table, and then the left and right sides of the seedling carrying table are folded.

[0009] The fourth aspect of the present invention is The upper end of the support column is connected to the center of the guide rail, and an arm having a long hole formed therein is fixed near the upper end and extends forward in an arc shape, A sub-support is provided at a position opposite to the position where the arm is arranged, and is erected on the central side of the seedling loading table, This is a third rice transplanter of the present invention, in which the long hole of the arm and the upper end of the sub-support can be connected to and separated from each other by a connecting device.

[0010] The fifth aspect of the present invention is This is a fourth rice transplanter of the present invention, in which the left and right ends of the guide rail are connected to the center of the guide rail by hinges at the upper ends of each end, and the lower ends are connected to each other by fasteners so that they can be freely attached and detached.

[0011] The sixth aspect of the present invention is When power is drawn into the sprayer from one of the two left and right ends, the left and right end on the side where power is drawn is not folded, and the other left and right end on the side where power is not drawn is folded, This is the fifth rice transplanter of the present invention, in which by folding the other left and right end portions on the side that is not retracted, the end faces on the central side of the other left and right end portions that are folded move upward, and by utilizing the movement of these end faces, a stopper located inside the central part of the guide rail protrudes toward the side where the sprayer is located, preventing the sprayer from falling out through the opening in the fold that occurs on the folding side.

[0012] The seventh aspect of the present invention is the rice transplanter of the sixth aspect of the present invention, in which the spreader is stopped in a location where the support pole is not erected before folding the left and right ends of the guide rail. [Effects of the Invention]

[0013] According to the present invention, by tilting the guide rail forward, the seedling tray can be prevented from protruding backward when folded. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a side view of a rice transplanter according to an embodiment of the present invention; [Figure 2] A partial perspective view of the rice transplanter from the rear [Figure 3] A perspective view of the rice transplanter from the rear [Figure 4] Side view of the decorative part and end of the guide rail of the rice transplanter [Figure 5] A perspective view of a decorative member and a guide rail [Figure 6] A perspective view of the bottom surface of the decorative member and the guide rail [Figure 7] A perspective view of the top surface of the decorative member and the guide rail [Figure 8] A perspective view showing a state in which the left and right ends are rotated relative to the center [Figure 9] A perspective view showing a state in which the left and right ends are rotated relative to the center [Figure 10] A perspective view of the state in which the left and right ends are folded toward the center [Figure 11] Perspective view of seedling tray, decorative material, and guide rail [Figure 12] Side view of seedling tray, decorative parts, and guide rails [Figure 13] A perspective view of the seedling tray, the decorative member folded and rotated forward, and the guide rails [Figure 14] A side view of the seedling tray, the decorative member folded and rotated forward, and the guide rail [Figure 15] A partial perspective view of the state in which the left and right ends are folded toward the center. [Figure 16] (A) and (B) are schematic side views of the rice transplanter, focusing on the stopper. [Figure 17] A partial perspective view of the state in which the left and right ends are folded toward the center and rotated forward. [Figure 18] (A) and (B) are perspective views showing how the decorative member and guide rail are folded. [Figure 19] A side view of the rice transplanter's support pillars and auxiliary pillars [Figure 20] Perspective view of the seedling tray and support frame [Figure 21]A perspective view of the seedling tray and the support frame when opened outwards. [Figure 22] Enlarged view of part of Figure 20 [Figure 23] Enlarged view of part of Figure 21 [Figure 24] (A) and (B) are perspective views showing the rotation of the support frame. [Figure 25] A perspective view of the rice transplanter's dewetting pole and seedling tray [Figure 26] Enlarged view of part of Figure 20 [Figure 27] A perspective view of the rice transplanter with the left and right sides of the seedling tray folded down. [Figure 28] A perspective view of the rice transplanter's seedling carrier, seen from below and behind, with the left and right sides folded down. [Figure 29] A perspective view of the seedling tray, decorative parts, guide rails, and sprayer of the rice transplanter from the rear [Figure 30] A perspective view of the seedling tray, decorative parts, guide rails, and sprayer of the rice transplanter from the rear DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0016] Fig. 1 is a side view of a rice transplanter according to an embodiment of the present invention, and Fig. 2 is a perspective view of the rice transplanter, focusing on a seedling tray. In the following, the forward and backward directions and the left and right directions are defined based on the traveling direction of the rice transplanter.

[0017] In Figures 1 and 2, reference numeral 1 denotes a vehicle body, and a seedling tray 2 is mounted on the rear of the vehicle body 1. The seedling tray 2 is foldable by rotating the left and right side portions 2a, 2a toward the central side portion 2b.

[0018] Furthermore, a guide rail 3 is arranged in the left-right direction along the seedling tray 2. This guide rail 3 is surrounded by a decorative member 3c. This decorative member 3c and other wiring are examples of accessories of the present invention. Also provided is a sprayer 4 that moves left and right on the guide rail 3 to spray pesticides. This guide rail 3 and the sprayer 4 make up a pesticide spraying device 5. This decorative member 3c functions as a resin cable carrier cover.

[0019] The left and right end portions 3a, 3a of the guide rail 3 can be rotated toward the center portion 3b of the guide rail 3 and folded.

[0020] Fig. 3 shows the rear of the rice transplanter, and Fig. 4 is a view of the left end of the guide rail 3 surrounded by the decorative member 3c. Fig. 5 is a perspective view showing an overview of the guide rail 3 surrounded by the decorative member 3c. Fig. 6 is a perspective view from below of the left and right end portions 3a and the central portion 3b in abutment, Fig. 7 is a perspective view from above of the left and right end portions 3a and the central portion 3b in abutment, and Figs. 8 and 9 are perspective views showing the left and right end portions 3a rotated upward by approximately 90 degrees. Fig. 10 is a perspective view showing the left and right end portions 3a rotated 180 degrees and placed on the central portion 3b.

[0021] That is, as shown in FIG. 7, the left and right end portions 3a of the guide rail 3 are connected to the center portion 3b by hinges 7 at the upper sides of the respective ends.

[0022] 5 and 6, the left and right end portions 3a of the guide rail 3 are connected to the central portion 3b at the bottom by fasteners (so-called snap locks) 8. Therefore, by removing the fasteners 8, the left and right end portions 3a of the guide rail 3 can be easily rotated upward and folded onto the top surface of the central portion 3b. Even when folded, the fasteners 8 can also be used to secure the left and right end portions 3a to the central portion 3b.

[0023] In FIG. 10, 3c1 and 3c2 are a convex portion and a concave portion, respectively, which are positioning portions for ensuring that the left and right end portions 3a and the central portion 3b come into contact at accurate positions when the cover is unfolded and extended.

[0024] Next, Figure 11 is a perspective view of the seedling tray 2, showing the guide rail 3 surrounded by the decorative member 3c in an operational state. Figure 12 is a side view, showing the guide rail 3 surrounded by the decorative member 3c standing almost vertically and spaced apart from the seedling tray 2. In this state, the sprayer 4 moves left and right on the guide rail 3 to spray the chemical. Note that the hopper that holds the chemical in the sprayer 4 is omitted from the figure.

[0025] Figure 15 shows the guide rail 3 surrounded by the decorative member 3c folded upward as described above, with a rack 9 fixed to the front of the guide rail 3 engaging with a gear driven by a motor inside the spreader 4, allowing the spreader 4 to move left and right on the guide rail 3. A fixed chain may be used instead of the rack.

[0026] In Figure 15, a support pillar 6 that supports the guide rail 3 surrounded by a decorative member 3c, the rack 9, etc., is erected on the seedling tray 2. That is, the upper end 6a of the support pillar 6 is fixed to the guide rail 3, and the lower end 6b is connected to a bracket 2c provided on the seedling tray 2 via a support shaft 2d so that it can rotate in the front-to-rear direction.

[0027] On the other hand, an arm 6c having a long hole 6c1 drilled therein and extending forward in an arc shape is fixed near the upper end 6a (see Figure 19). Also, a sub-support 6d is erected on the central side portion 2b of the seedling-carrying table 2 at a position opposite to the position where the arm 6c is arranged.

[0028] Furthermore, the elongated hole 6c1 of the arm 6c and the upper end 6d1 of the sub-support 6d can be fixed at any position by a knob bolt 6e. The knob bolt 6e is an example of the connector of the present invention.

[0029] Such a combination of support pillar 6, bracket 2c, arm 6c, sub-pillar 6d, etc. is provided at three locations in the left-right direction on central portion 3b of guide rail 3 (see FIG. 18).

[0030] Figure 17 shows the state in which such a support post 6 has been tilted forward, bringing the guide rail 3 surrounded by the decorative member 3c closer to the seedling tray 2. Figure 13 is a perspective view showing the entire seedling tray 2 in this state. Figure 14 is a side view. That is, by loosening the knob bolt 6e and moving the arm 6c forward, the guide rail 3 approaches the seedling tray 2 and is tilted forward until the tip 6d1 of the sub-post 6d is at the rear end of the elongated hole 6c1, and then tightening the knob bolt 6e, the guide rail 3 surrounded by the decorative member 3c is stably fixed in a low position.

[0031] During normal operation, the left and right ends 3a of the guide rail 3 surrounded by the decorative member 3c are not folded but are unfolded, but the outermost ends 3a1 (see Figures 4, 5, 11, 12, and 18) of the left and right ends 3a are connected to the seedling tray 2 as described below. This allows for stable spraying of the pesticide.

[0032] A fastener 8 is provided at the outer end 3a1 of the left and right end portions 3a of the guide rail 3 (see Figure 4). Furthermore, at the position of the seedling loading tray 2 where the outer end 3a1 faces, a triangular support frame 10 is erected so as to be rotatable outward (see Figures 5, 11, and 20). The tip 10a of this support frame 10 and the outer end 3a1 of the left and right end portions 3a of the guide rail 3 can be easily attached and detached by operating the fastener 8 (see Figure 4).

[0033] Furthermore, as shown in Figure 21, this support frame 10 can be rotated outward from the upright position described above so as to be parallel to the surfaces of the left and right side portions 2a of the seedling-carrying table 2. When folding the left and right side portions 2a of the seedling-carrying table 2, if the triangular support frame 10 remains upright, it will get in the way of the guide rails 3 and the central side portion 2b of the seedling-carrying table 2, so it can be unfolded outward so as not to get in the way.

[0034] That is, as shown in Figure 20, the side 10b of the triangular support frame 10 facing the seedling tray 2 is composed of a slender rod 10b that is long upward and extends slightly downward. As shown in Figures 22 and 23, the lower end 10b1 of the rod 10b is rotatably supported by a bracket 11 fixed to the seedling tray 2, and a protrusion 10b2 is welded to a position slightly above the lower end 10b1 of the rod 10b, with a convex portion protruding downward from the underside of the tip of the protrusion 10b2. In addition, a guide piece 12 is welded to a position slightly above the bracket 11 fixed to the seedling tray 2. Two holes 12a1 and 12a2 are drilled in this guide piece 12. The guide piece 12 is located below the protrusion 10b2.

[0035] The shape and size of the protrusions on the lower surface of the tip of the protruding piece 10b2 are such that they can fit into the holes 12a1 and 12a2. Reference numeral 13 denotes a reinforcing plate for the triangular support frame 10.

[0036] As shown in Figure 26, this rod member 10b has a spring 14 fitted to its upper end, allowing it to be moved up and down by hand. That is, when the rod member 10b is lifted upward, the convex portion of the protruding piece 10b2, which was engaged with either the hole 12a1 or 12a2 of the guide piece 12, comes out, allowing the triangular support frame 10 to be deployed outward or closed inward. Simply align the convex portion with the hole 12a1 or 12a2 on the side you want to position and then lower the rod member 10b. Hole 12a1 is a hole for positioning when deployed outward, and hole 12a2 is a hole for positioning when the frame is installed upright for work.

[0037] Furthermore, Figure 25 shows that a dew-cleaning rod 15 for holding down and sorting seedlings to some extent is inserted and stored using the open hole 12a2 (see Figure 23). That is, when the left and right side portions 2a of the seedling-carrying table 2 are folded when not in use, the support frame 10 is deployed outward as described above, and as a result, the protrusions come out of the hole 12a2, leaving the hole 12a2 empty. The empty hole 12a2 can then be used to store the dew-cleaning rod 15, as shown in Figure 25.

[0038] In this way, when work is to be carried out, the triangular support frame 10 cannot be erected without removing the dew removal rod 15, so that it is possible to prevent forgetting to attach the dew removal rod 15 to its original position.

[0039] For this purpose, the thickness of the part of the demolition rod 15 that is inserted into the hole 12a2 must be smaller than the diameter of the hole 12a2.

[0040] Next, Figure 27 is a perspective view from the rear showing the seedling tray 2 with the left and right side sections 2a folded in. Figure 28 is a schematic view from the bottom of the rear. Here, 16 is a folding shaft frame, which is erected on the seedling tray 2, and the left and right side sections 2a can be folded inward around the shaft 16a.

[0041] As shown in Figure 28, a regulating rod 17 is fixed in an upright position on the upper outermost side of the left and right side sections 2a, and when the left and right side sections 2a are folded, it stands upright toward the central side section 2b of the seedling-carrying table 2, that is, facing downward. On the other hand, at the position to which the regulating rod 17 moves as it is folded, a receiving rod 18 with a recess at its upper end stands upright, and is designed to receive the lower end of the regulating rod 17 as it moves downward. This regulating rod 17 is an example of a regulating member of the present invention.

[0042] With this structure, when the left and right side portions 2a of the seedling carrier 2 are folded, a space of a predetermined size can be formed between the left and right side portions 2a and the central side portion 2b, preventing the seedling carrier 2 from colliding with the guide rail 3 surrounded by the decorative member 3c that is folded and placed in that space. The sprayer 4 is stopped between the support posts 6.

[0043] Additionally, to prevent malfunctions in driving the sprayer 4 when it is stored, the following structure is used. That is, of the left and right end portions 3a, power is normally drawn from the right end portion 3a of the sprayer 4. Now, when folding the left and right end portions 3a, or when folding only the right end portion 3a, the power connector is naturally removed before folding, so there is no need to worry about the sprayer 4 moving.

[0044] On the other hand, when folding only the left end 3a without folding the right end 3a, power is supplied to the sprayer 4, so there is a risk that the sprayer 4 may move and fall through the open part of the fold on the left side due to malfunction.

[0045] Therefore, to prevent the sheet from falling, it is desirable to provide a stopper 19 that protrudes when the sheet is folded near the part of the fold that opens when the sheet is folded. For example, in Figures 10 and 15, 20 is the end face of the fold on the central portion 3b side, and 21 is the end face of the fold on the left and right end portions 3a side, which abut against each other when the sheet is not folded, and as shown in Figure 15, the stopper 19 can protrude from the vicinity of the end face toward the spreader 4.

[0046] 16(A) and (B) (plan views with hinges 7 omitted), a stopper mechanism is disposed inside central portion 3b near end surface 20. Note that FIG. 16(A) shows the state in which left and right end portions 3a are extended without being folded, and FIG. 16(B) shows the state in which left and right end portions 3a are being folded upward.

[0047] A shaft 22 is disposed inside the central portion 3b and is oriented parallel to the longitudinal direction (left-right direction) of the central portion 3b, and the shaft 22 is held by a holding portion 24 fixed to the central portion 3b so that the shaft 22 can slide left and right. Furthermore, a flange portion 23 is fixed midway along the shaft 22, and a compression spring 25 is provided between the flange portion 23 and the holding portion 24. Therefore, when no external force is applied, the shaft 22 protrudes outward from the hole 20a in the end face 20 as shown in FIG. 16(B).

[0048] Furthermore, a rod-shaped stopper 19 is disposed near the center of the shaft 22. This stopper 19 is rotatably supported by a fulcrum 26 fixed to the central portion 3b. Furthermore, a fastening portion 27 of a tension spring 28 is disposed below the stopper 19, and the tension spring 28 is attached between the fastening portion 27 and an extension 31 at the lower end of the stopper 19, pulling the extension 31 at the lower end. The right end of the shaft 22 can abut against the center of the stopper 19. However, in the state shown in FIG. 16(B), no force is received from the shaft 22, so the stopper 19 rotates counterclockwise in the drawing due to the tension of the tension spring 28, and the tip 19a of the stopper 19 protrudes from a slit 30 formed in the wall of the central portion 3b, preventing movement of the sprayer 4.

[0049] In contrast, as shown in Figure 16(A), when the left and right end portions 3a are not folded, the end faces 21 of the left and right end portions 3a push the left end of the shaft 22, so that the right end of the shaft 22 pushes the center of the stopper 19 to the right. As a result, the tip 19a of the stopper 19 rotates clockwise and retracts inward from the slit 30, so that the movement of the spreader 4 is not blocked.

[0050] In this way, when the stopper 19 is in the protruding state, even if the spreader 4 moves, it is stopped there and prevented from falling.

[0051] 16, the outer edge 30a of the slit 30 is positioned so that it will come into contact with the stopper 19 when the stopper 19 protrudes perpendicularly to the surface of the guide rail 3. This ensures safety even if the spreader 4 tries to fall out, as the stopper 19 that the spreader 4 has hit will come into contact with the outer edge of the slit 30 and will not physically move out any further.

[0052] Regardless of whether or not the sprayer 4 is energized, it is desirable that the stopper mechanism be provided on both the left and right sides for safety reasons.

[0053] The operation of the rice transplanter of this embodiment will be described below.

[0054] When performing trial feeding or work, move the sprayer 4 from the right end to the left end from any position as shown in Figure 29, and finally move it to the center position on the left and right of the seedling loading table 2 and stop it there.

[0055] In contrast, when storing the sprayer 4, as shown in FIG. 30, the sprayer 4 is moved from the right end to the left end and finally moved to a position shifted from the center position and stopped. That is, the sprayer 4 is stopped in a location where no support column 6 is erected. As described above, the guide rail 3 surrounded by the decorative member 3c is rotated forward by about 30 degrees during storage, and it is necessary to prevent the sprayer 4 from colliding with the sub-column 6d where the support column 6 is located. In this embodiment, the support column 6 is located in the center, so in such a case, the sprayer 4 is stopped in a position shifted, for example, 250 mm to the right from the center position. If the support column 6 is not located in the center position, the sprayer 4 is stopped in a position shifted from the location of the support column 6 and the sub-column 6d facing it.

[0056] Next, as shown in Figure 18(A), the outer ends 3a1 of the left and right end portions 3a are disconnected from the tip 10a of the support frame 10. That is, the fastener 8 shown in Figure 4 is removed by hand, and then the fasteners 8 shown in Figures 5 and 6 are also removed by hand. After this, as shown in Figures 9, 10, and 18(B), the left and right end portions 3a are folded and fixed to the upper surface of the center portion 3b with the fastener 8.

[0057] Next, the guide rail 3, now surrounded by the decorative member 3c, is folded forward, i.e., toward the seedling tray 2. Specifically, as shown in Figures 13, 14, and 17, the support pillar 6 supporting the guide rail 3 is tilted forward around the support shaft 2d. To do this, loosen the knob bolt 6e that had been fixed in place and rotate the arm 6c forward. At this time, the elongated hole 6c1 of the arm 6c is guided along the tip 6d1 of the sub-pillar 6d erected on the seedling tray 2.

[0058] Thereafter, when the support column 6 reaches the rear end of the elongated hole 6c1, the knob bolt 6e is retightened to fix the support column 6 in that position. That is, the guide rail 3 surrounded by the decorative member 3c is fixed in a position where it is tilted forward.

[0059] Next, as shown in Figures 21, 23, and 24(B), the support frames 10 on both the left and right sides are opened outward. Specifically, first, the rod member (side) 10b in Figure 20 is manually lifted against the spring 14 as shown in Figure 26. As a result, the protrusion formed on the underside of the protruding piece 10b2, which had been welded to the lower end 10b1 of the rod member 10b, as shown in Figure 22, is removed from the outer hole 12a2 of the guide piece 12 fixed to the seedling tray 2. While the rod member 10b is still lifted, the support frame 10 is opened outward until the protrusion reaches the inner hole 12a1 of the guide piece 12. The rod member 10b is then released, and the spring 14 causes the protrusion to be inserted into the inner hole 12a1.

[0060] This means that when the support frame 10 is open, that is, it is positioned on the same plane as the left and right side portions 2a of the seedling carrying table 2, and when the left and right side portions 2a are folded as described below, there is no risk of interference with the guide rails 3 surrounded by the decorative members 3c, etc.

[0061] When the support frame 10 is opened in this manner, the outer hole 12a2 is opened, and the lower end of the dew sweeper rod 15 that is not used during storage can be inserted into this hole to serve as a temporary storage location, as shown in Figure 25. When working, the dew sweeper rod 15 is returned to its original position, the hole 12a2 is opened, and the rod is used to close the support frame 10.

[0062] Next, as shown in Figures 27 and 28, the left and right side sections 2a of the seedling tray 2 are folded toward the central side section 2b around the shaft 16a of the folding shaft frame 16 (see Figures 12, 13, and 14). At this time, as shown in Figures 2 and 28, the male tips of the regulating rods (regulating members) 17 erected on the left and right side sections 2a come into contact with the female tips of the receiving rods 18 erected on the central side section 2b, ensuring a certain distance. Specifically, the folding shaft frame 16 can be stopped at 175 degrees rather than opening 180 degrees. This prevents the left and right side sections 2a from interfering with the guide rails 3, which are surrounded by the decorative member 3c that was previously folded. This allows for safe storage.

[0063] Conventionally, when the sprayer 4 is located at the center of the vehicle body, a balance move is performed to ensure the levelness of the seedling tray 2. However, as mentioned above, the storage position is offset from the center, so it is desirable to operate the seedling tray 2, start spraying, and then perform the balance move after it has reached the center of the vehicle body.

[0064] Furthermore, in the above embodiment, as shown in each figure, three sets of support pillars 6, arms 6c, sub-pillars 6d, etc. are provided, one in the center and one on each side, but this is not limited to this, and two or four or more sets may be used. [Industrial Applicability]

[0065] The present invention relates to a rice transplanter equipped with a seedling carrier for planting seedlings, and is ideal for rice transplanters because it can prevent the seedling carrier from protruding backward when folded. [Explanation of symbols]

[0066] 1. Body 2 Seedling tray 2a Left and right sides 2b Central side 2c bracket 2d spindle 20 Center end face 20a hole 21 End faces of both ends 3 Guide rails 3a Left and right ends 3b central part 3c Decorative materials 4 Spreader 5. Chemical spraying device 6 Support column 6a top end 6b Bottom edge 6c Arm 6d sub-post 6e Connector (knob bolt) 7 Hinge 8 zipper closure 9 racks 10 Support Frame 10a tip 10b Side (bar member) 11 Bracket 12 Guide strip 13 Reinforcement plate 14 Spring 15 Dewplow 16 folding axis frame 16a axis 17 Regulatory member (regulatory rod) 18 Receiving rod 19 Stopper

Claims

1. A seedling loading platform installed at the rear of the vehicle body, with the left and right sides pivoting toward the center and foldable; A guide rail arranged in the left-right direction along the seedling loading table, and a chemical spraying device having a sprayer for applying chemicals that moves left and right on the guide rail, The left and right ends of the guide rail are foldable by rotating toward the center of the guide rail, The central portion of the guide rail is supported by a support pillar that is erected on the seedling loading table so as to be rotatable in the front-rear direction, This rice transplanter is characterized in that when folding the seedling tray, the left and right ends of the guide rail are first folded, the support pole is rotated forward compared to its normal posture, and then the seedling tray is folded so that the folded guide rail is sandwiched between the left and right sides of the folded seedling tray and the central side of the seedling tray.

2. A rice transplanter as described in claim 1, wherein a regulating member is provided to restrict the rotation of the left and right sides of the seedling loading platform to a predetermined position for folding them to the central side so that the seedling loading platform does not come into contact with the guide rail or its accessories when the left and right sides of the seedling loading platform are folded to the central side.

3. The left and right ends of the guide rail are detachably supported by support frames that are rotatably erected outward on the left and right sides of the folding seedling tray, A rice transplanter as described in claim 2, wherein when the left and right ends of the guide rail are folded, the support frame is separated from the left and right ends of the guide rail, and further, the support frame opens outward from the upright state so as to be parallel to the surfaces of the left and right side portions of the seedling carrying table, and then the left and right side portions of the seedling carrying table are folded.

4. The upper end of the support column is connected to the center of the guide rail, and an arm having a long hole formed therein is fixed near the upper end and extends forward in an arc shape, A sub-support is provided at a position opposite to the position where the arm is arranged, and is erected on the central side of the seedling loading table, 4. The rice transplanter according to claim 3, wherein the long hole of the arm and the upper end of the sub-support pole can be connected to and separated from each other by a connector.

5. A rice transplanter as described in claim 4, wherein the upper and lower ends of the left and right ends of the guide rail are connected to the center of the guide rail by hinges, and the lower ends are connected to each other by fasteners in a manner that allows them to be freely attached and detached.

6. When power is drawn into the sprayer from one of the two left and right ends, the left and right end on the side where power is drawn is not folded, and the other left and right end on the side where power is not drawn is folded, A rice transplanter as described in claim 5, wherein by folding the other left and right end portions on the non-retractable side, the end faces on the central side of the other left and right end portions that are folded move upward, and by utilizing the movement of the end faces, a stopper located inside the central portion of the guide rail protrudes toward the side where the sprayer is located, preventing the sprayer from falling out through the opening in the fold that occurs on the folding side.

7. 7. The rice transplanter according to claim 6, wherein the spreader is stopped in a location where the support pole is not erected before folding the left and right ends of the guide rail.

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