rice transplanter

Abstract

To appropriately store a detached hopper portion when folding a seedling platform.SOLUTION: A rice transplanting machine includes a seedling platform whose side portions can be folded toward a central portion, a chemical spreading device having a guide rail and a spreader, and a rotatable auxiliary step 33. The spreader includes a detachable hopper portion 4a. The side portions of the guide rail can be folded by rotating toward the central portion of the guide rail, and the central portion of the guide rail is supported on the seedling platform by a support post erected rotatably in the front-rear direction. When folding the seedling platform, the side portions of the guide rail are first folded, the support post is rotated forward relative to its normal posture state, and then the seedling platform is folded. The hopper portion 4a, which is detached during the folding of the seedling platform and the guide rail, is detachably attached to a rear side of the rotatable auxiliary step 33.SELECTED DRAWING: Figure 24

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] Furthermore, although the chemical spraying device is equipped with a main body and a hopper section, when folding as described above, the hopper section may get in the way and need to be removed, but there was no way to deal with this.

[0006] In consideration of such problems with conventional rice transplanters, the present invention aims to provide a rice transplanter in which the seedling-carrying table can be folded so that the guide rails do not get in the way when the table is folded, and in which the removed hopper section can be stored appropriately. [Means for solving the problem]

[0007] The first aspect of the present invention is A seedling loading platform installed at the rear of the vehicle body, the side of which can be rotated to the center and folded; A chemical spraying device having a guide rail attached in the left-right direction along the seedling loading table and a sprayer for applying chemicals that moves left and right on the guide rail; A rice transplanter equipped with a rotatable auxiliary step, The sprayer has a detachable hopper portion on the sprayer body, The side portions of the guide rail are foldable by rotating toward the center portion 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, When folding the seedling tray, first fold the side of the guide rail, rotate the support pole forward compared to the normal posture, and then fold the seedling tray so that the folded guide rail is sandwiched between the side of the folded seedling tray and the center of the seedling tray. This rice transplanter is characterized in that the hopper section, which is detached when the seedling loading table and the guide rail are folded, is detachably attached to the back side of the rotatable auxiliary step.

[0008] The second aspect of the present invention is the auxiliary step has a grating portion, a hopper portion attachment tool for attaching the hopper portion to the back side of the auxiliary step; The hopper section mounting fixture is a first rice transplanter of the present invention, which has a receiving portion into which the hopper section is fitted and fixed, and a clamping portion that holds the receiving portion and clamps a portion of the lattice section from the front and back.

[0009] The third aspect of the present invention is This is a second rice transplanter of the present invention, in which the hopper part is fitted into the receiving part and then fixed with a rubber band.

[0010] The fourth aspect of the present invention is An unfolding detection switch is provided to detect whether the seedling tray or guide rail is unfolded or folded; This is a third rice transplanter of the present invention, in which when the seedling tray or guide rail is folded, the control unit does not move the sprayer even if power to the sprayer is connected.

[0011] The fifth aspect of the present invention is This is a fourth rice transplanter of the present invention, in which the unfolding detection switch is arranged in the center of the seedling loading table or the center of the guide rail, and detects folding when a corresponding part of the side of the folded seedling loading table or the side of the guide rail abuts against the unfolding detection switch.

[0012] The sixth aspect of the present invention is A fastener having a hook is attached to the outer end surface of the side of the guide rail, and a protrusion onto which the hook of the fastener is hooked is arranged at a corresponding position on the center of the guide rail, the protrusion is attached to a trapezoidal convex regulating plate erected in the central portion, and a trapezoidal concave notch of a corresponding shape is formed in the outer end surface of the side portion of the guide rail, This is a fifth rice transplanter of the present invention, in which, when the side of the guide rail is folded, the notch on the outer end surface fits into the regulating plate, thereby regulating movement of the outer end surface due to vibration.

[0013] The seventh aspect of the present invention is This is a sixth rice transplanter of the present invention, in which the sprayer is equipped with a storage section for storing the oil to be sprayed, an oil pump, and an oil hose, which move along with the sprayer, allowing oil to be sprayed during operation.

[0014] The eighth aspect of the present invention is The guide rail is disposed within a box-shaped decorative member and is detachably supported by the support column, This is a seventh rice transplanter of the present invention, in which the guide rail can be rotatably supported and held at a predetermined inclination at a predetermined location in the central portion when removed from the support pole.

[0015] The ninth aspect of the present invention is This is an eighth aspect of the rice transplanter 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 side portions of the guide rail. [Effects of the Invention]

[0016] According to the present invention, by tilting the guide rail forward, the seedling tray can be prevented from protruding backward when folded. Also, the detached hopper section can be stored properly. [Brief explanation of the drawings]

[0017] [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 side portions are rotated relative to the center portion. [Figure 9] A perspective view showing a state in which the left and right side portions are rotated relative to the center portion. [Figure 10] A perspective view of the state in which the left and right side portions are folded toward the center portion. [Figure 11]A perspective view of a model centered on the outer end face of the guide rail in a state where the left side portion of the guide rail is folded toward the center portion. [Figure 12] A perspective view of a model centered on the top surface of the central portion when the left side of the guide rail is not folded relative to the central portion. [Figure 13] A perspective view of the back of Figure 11 [Figure 14] FIG. 12 is a perspective view showing a modification of the embodiment of FIG. 11; [Figure 15] Perspective view of seedling tray, decorative material, and guide rail [Figure 16] Side view of seedling tray, decorative parts, and guide rails [Figure 17] A perspective view of the seedling tray, the decorative member folded and rotated forward, and the guide rails [Figure 18] A side view of the seedling tray, the decorative member folded and rotated forward, and the guide rail [Figure 19] A partial perspective view of the state in which the left and right side portions are folded relative to the center portion. [Figure 20] FIG. 1 is a partial perspective view of the state in which the left and right side portions are folded relative to the center portion and rotated forward. [Figure 21] (A) and (B) are perspective views showing how the decorative member and guide rail are folded. [Figure 22] A side view of the rice transplanter's support pillars and auxiliary pillars [Figure 23] 1 is a perspective view of a rice transplanter including an auxiliary step according to an embodiment of the present invention; [Figure 24] Enlarged view of part of Figure 23 [Figure 25] A perspective view centered on the auxiliary step [Figure 26] FIG. 10 is a perspective view showing a state in which the hopper portion is attached to the auxiliary step. [Figure 27] Enlarged view explaining how to attach the hopper to the auxiliary step [Figure 28] A perspective view of the unfolded auxiliary step from above [Figure 29] A perspective view of the rice transplanter with the left and right sides of the seedling tray folded down. [Figure 30]A perspective view of the rice transplanter's seedling carrier, seen from below and behind, with the left and right sides folded down. [Figure 31] A perspective view of the seedling tray, decorative parts, guide rails, and sprayer of the rice transplanter from the rear [Figure 32] A perspective view of the seedling tray, decorative parts, guide rails, and sprayer of the rice transplanter from the rear [Figure 33] 10 is a perspective view of a seedling tray, a decorative member, and a guide rail in another embodiment. [Figure 34] 10 is a perspective view of a seedling tray, a decorative member, and a guide rail in another embodiment. [Figure 35] 10 is a perspective view of a seedling tray, a decorative member, and a guide rail in another embodiment. [Figure 36] FIG. 10 is a perspective view showing a sprayer, an oil pump, and the like in another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0019] 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.

[0020] 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 center portion 2b.

[0021] 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.

[0022] The left and right side portions 3a, 3a of the guide rail 3 can be rotated toward the center portion 3b of the guide rail 3 and folded.

[0023] Fig. 3 shows the rear of the rice transplanter, and Fig. 4 is a diagram 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 side portion 3a and the central portion 3b in contact with each other, Fig. 7 is a perspective view from above of the left side portion 3a and the central portion 3b in contact with each other, and Figs. 8 and 9 are perspective views showing the left side portion 3a rotated upward by approximately 90 degrees. Fig. 10 is a perspective view showing the left side portion 3a rotated 180 degrees and placed on the central portion 3b.

[0024] That is, as shown in FIG. 7, the left and right side portions 3a of the guide rail 3 are connected to the center portion 3b by hinges 7 at the upper ends thereof.

[0025] 5 and 6, the left and right side portions 3a of the guide rail 3 are connected to the central portion 3b at the bottom of each end by fasteners (so-called snap locks) 8-2. Therefore, by simply removing the fasteners 8-2, the left and right side portions 3a of the guide rail 3 can be easily rotated upward and folded onto the top surface of the central portion 3b. Furthermore, in order to fix the left and right side portions 3a to the top surface of the central portion 3b when folded, fasteners 8-3 are used as follows.

[0026] That is, as shown in Fig. 11, fasteners 8-3 are provided on the outer end surfaces 30 of the left and right side portions 3a, with rectangular cutouts 30a formed on their undersides. On the other hand, a rectangular regulating plate 31 is erected on the upper surface 3b1 side of the central portion 3b, with hook-shaped protrusions 32 attached to the upper end of the regulating plate 31. Fig. 11 shows the state in which the folded left and right side portions 3a abut against the upper surface 3b1 of the central portion 3b, and the hook members of the fasteners 8-3 are engaged with the hook-shaped protrusions 32.

[0027] 12 shows the regulating plate 31 and the protrusion 32 on the central portion 3b side when the left and right side portions 3a are not folded. Also, FIG. 13 shows the back side of FIG.

[0028] 11 to 14 are schematic diagrams and differ from the actual structure.

[0029] The notch 30a has a shape and size that fit perfectly into the regulating plate 31. As a result, even if the vehicle body 1 vibrates in the folded state, the regulating plate 31 regulates the movement of the notch 30a, thereby preventing the fastener 8-3 from breaking the engagement with the protrusion 32.

[0030] 14 shows a modified example in which the shape of the notch 30a is a trapezoidal concave shape and the shape of the regulating plate 31 is a corresponding trapezoidal convex shape. As a result, when folding the left and right side portions 3a, even if the positions of the notch 30a and the regulating plate 31 are slightly misaligned, the regulating plate 31 fits smoothly into the notch 30a.

[0031] 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 side portions 3a and the central portion 3b come into contact at accurate positions when the cover is unfolded and extended.

[0032] Next, Figure 15 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 16 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 portion for receiving the chemical into the sprayer 4 has been omitted from the figure.

[0033] Figure 19 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.

[0034] In Figure 19, a support pillar 6 that supports a guide rail 3 surrounded by a decorative member 3c, a 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.

[0035] 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 22). Also, a sub-support 6d is erected in the center 2b of the seedling-carrying table 2 at a position opposite to the position where the arm 6c is arranged.

[0036] 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.

[0037] Such combinations of support pillar 6, bracket 2c, arm 6c, sub-pillar 6d, etc. are provided at three locations in the left-right direction on central portion 3b of guide rail 3 (see FIG. 21).

[0038] Figure 20 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 17 is a perspective view showing the seedling tray 2 and other components in this state. Figure 18 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 upper end 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.

[0039] Furthermore, when folding and storing the sprayer 4, when the folded guide rail 3 is tilted forward and brought closer to the seedling loading platform 2, the hopper section 4a of the sprayer 4 may interfere with the seedling loading platform 2. Therefore, when storing the sprayer 4, the hopper section 4a must be removed from the main body of the sprayer 4 and stored in a place where it is unlikely to get lost and where it will not get in the way.

[0040] 23 and its partially enlarged view, Fig. 24, a rotatable and foldable auxiliary step 33 is attached to the vehicle body 1, and the removed hopper section 4a is attached and stored on the back side 33b of this auxiliary step 33 as described below. The auxiliary step 33 has a lattice section 33a.

[0041] 25 shows the auxiliary step 33 rotated and standing, with the hopper section 4a not attached. Here, 34 denotes a hopper section attachment fixture, which has a receiving section 34a into which the hopper section 4a is fitted, and clamping sections 34b that hold the receiving section 34a and clamp some of the bars of the lattice section 33a from the front and back.

[0042] As shown in FIG. 27, the portion of the sandwiching portion 34b on the lattice portion 33a side is configured so that the bars of the lattice portion 33a are sandwiched between two plates and fixed with bolts.

[0043] On the other hand, the receiving part 34a has a cup into which the hopper part 4a is fitted as shown in Fig. 26, and furthermore, it can be firmly fixed around the hopper part 4a with a rubber band 35 as shown in Fig. 25. This makes it convenient to install without any special tools.

[0044] When folded and stored, the hopper section 4a is fixed and stored on the back side of the auxiliary step 33, but when the auxiliary step 33 is extended for use, the hopper section mounting section 34 is located on the underside (back side 33b) of the auxiliary step 33 as shown in Figure 28, so it does not interfere with work. Note that because it is clamped and fixed, it can be applied to either the left or right auxiliary step 33 as desired.

[0045] During normal operation, the left and right side portions 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, 15, 16, and 21) of the left and right side portions 3a are connected to the seedling tray 2 as described below. This allows for stable spraying of the chemical agent.

[0046] A fastener 8-1 is provided at the outer ends 3a1 of the left and right side portions 3a of the guide rail 3 (see Figure 4). Furthermore, at the position of the seedling loading tray 2 where the outer ends 3a1 face, a triangular support frame 10 is erected so that it can rotate outward (Figures 5, 15, and 16). The tip 10a of this support frame 10 and the outer ends 3a1 of the left and right side portions 3a of the guide rail 3 can be easily attached and detached by operating the fastener 8-1 (see Figure 4).

[0047] Furthermore, this support frame 10 can be rotated outward from its upright position so that it is parallel to the surfaces of the left and right side sections 2a of the seedling-carrying table 2. When folding the left and right side sections 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 section 2b of the seedling-carrying table 2, so it can be unfolded outward so as not to get in the way.

[0048] Next, Figure 29 is a perspective view from the rear showing the seedling tray 2 with the left and right side sections 2a folded in. Figure 30 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.

[0049] As shown in Figure 30, 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 center 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 in the center section 2b of the seedling-carrying table 2, a receiving rod 18 with a recessed portion at its upper end is erected, so as to receive the lower end of the regulating rod 17 as it moves downward.

[0050] 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 portion 2b, preventing the folded left and right side portions 2a from colliding with the guide rail 3 surrounded by the decorative member 3c that has been previously folded and placed in that space. The sprayer 4 is stopped between the support posts 6.

[0051] In addition, the sprayer 4 has the following structure to prevent malfunctions when stored. That is, when in operation, power is normally drawn from the right side 3a of the left and right side 3a for the sprayer 4. In Figure 19, M is the power cable.

[0052] Now, when folding the left and right side portions 3a, or when folding only the right side portion 3a, the power connector is naturally removed before folding, so there is no need to worry about the spreader 4 moving in the first place.

[0053] On the other hand, when folding only the left side portion 3a without folding the right side portion 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 a malfunction.

[0054] Therefore, to prevent the sheet from falling, it is desirable to provide a stopper 19 that protrudes when the sheet is folded near the portion of the fold that opens when the sheet is folded. For example, in Figures 10 and 19, 20 denotes the end face of the fold on the central portion 3b side, and 21 denotes the end face of the fold on the left and right side portions 3a side, which abut against each other when the sheet is not folded, and as shown in Figure 19, the stopper 19 can protrude from the vicinity thereof toward the spreader 4. This stopper 19 protrudes when the left and right side portions 3a are folded, and retracts when the sheet is unfolded.

[0055] In this way, when the stopper 19 is in the protruding state, that is, when the guide rail 3 is folded, even if the spreader 4 moves, it is stopped by the stopper 19 and prevented from falling. Regardless of whether or not the spreader 4 is energized, it is desirable for the stopper mechanism to be present on both the left and right sides for safety reasons.

[0056] There are also other fall prevention methods, as shown below.

[0057] An unfolding detection switch 36 is provided to detect whether the seedling carrying tray 2 is unfolded or folded. For example, when folding as shown in Figure 29, the unfolding detection switch 36 is disposed in the center 2b of the seedling carrying tray 2, and detects that the seedling carrying tray 2 is folded when corresponding parts of the left and right side portions 2a of the folded seedling carrying tray 2 come into contact with the unfolding detection switch 36.

[0058] When it is detected that the seedling tray 2 is folded in this way, the control unit 100 controls the sprayer 4 so that it does not move, even if the power supply to the sprayer 4 is connected. For example, the control unit 100 controls the drive motor in the sprayer 4 to stop rotating.

[0059] In addition, this deployment detection switch 36 may be provided on the central portion 3b side of the guide rail 3, as shown in Figure 8, and when folded, the spreader 4 will not be moved even if the power supply is connected, thereby ensuring safety.

[0060] The operation of the rice transplanter of this embodiment will be described below.

[0061] 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 31, and finally move it to the center position on the left and right of the seedling loading table 2 and stop it there.

[0062] In contrast, when storing, as shown in FIG. 32, before folding, the spreader 4 is first moved from the right end to the left end and then moved to a position offset from the center position where the support column 6 is located and stopped. In other words, the spreader 4 is stopped in a location where the support column 6 is not erected. As described above, the guide rail 3 surrounded by the decorative member 3c is rotated forward by about 30 degrees during storage, so it is necessary to prevent it 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 spreader is stopped in a position offset, for example, 250 mm to the right from the center position. If the support column 6 is not located in the center position, it is necessary to stop the spreader 4 in a location offset from the location of the support column 6 and the sub-column 6d facing it.

[0063] Next, the outer ends 3a1 of the left and right side portions 3a are disconnected from the tip 10a of the support frame 10. That is, the fastener 8-1 shown in Figure 4 is removed by hand, and then the fastener 8-2 shown in Figures 5 and 6 is also removed by hand. After this, the left and right side portions 3a are folded and fixed to the top surface of the center portion 3b with the fastener 8-3, as shown in Figures 9, 10, and 11.

[0064] 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 17, 18, and 20, 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 upper end 6d1 of the sub-pillar 6d erected on the seedling tray 2.

[0065] 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.

[0066] Next, the support frames 10 provided on both the left and right sides are opened outward.

[0067] 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.

[0068] Next, as shown in Figs. 29 and 30, the left and right side portions 2a of the seedling-carrying table 2 are folded toward the center portion 2b around the shafts 16a of the folding shaft frame 16 (see Figs. 16, 17 and 18).

[0069] At this time, as shown in Figures 2 and 30, the tips (male) of the regulating rods (regulating members) 17 erected on the left and right side portions 2a come into contact with and are received by the tips (female) of the receiving rods 18 erected on the center portion 2b, ensuring a certain distance. Specifically, the folding axis frame 16 can be stopped at 175 degrees instead of opening 180 degrees. This prevents the left and right side portions 2a from interfering with the guide rails 3, which are surrounded by the decorative member 3c that has already been folded. In this way, storage can be performed safely.

[0070] 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.

[0071] Figure 33 shows another embodiment in which the guide rail 3 is arranged inside a box-shaped decorative member 3c, and the decorative member 3c and guide rail 3 are detachably supported on a support column 6. As shown in Figure 33, the guide rail 3 and decorative member 3c can be removed from the support column 6 and held at a predetermined position in the center portion 3b, for example, at center position Z, while being supported and rotated at a predetermined inclination, for example, about 35 degrees.

[0072] By tilting it in this way, dust and other debris on the decorative member 3c and guide rail 3 can be easily removed by blowing air from above.

[0073] 34 shows another embodiment in which a cleaning window 37 is provided on the outer end surface 30 of the guide rail 3 and the decorative member 3c. By opening this window 37, cleaning of the inside of the decorative member 3c becomes easy.

[0074] Figure 35 shows another embodiment in which the left and right side portions 3a of the guide rail 3 and the decorative member 3c are bent upward by 90 degrees and fixed there. This makes it easier for dust and other debris to fall out, making cleaning easier. Since the left and right side portions 3a do not rest on the center portion 3b of the guide rail 3, the center portion 3b is easier to maintain.

[0075] Figure 36 shows another embodiment, in which a reservoir 38 for storing oil to be applied and an oil pump 39 are provided on the side of the sprayer 4. Reference numeral 40 denotes a hose. These oil pumps 39 and others can move along with the sprayer 4, so oil can be easily applied even during operation, improving the durability of the chain and sliding parts. Furthermore, by using an electric pump for the oil pump 39, it can be controlled to apply oil once every 10 strokes of the seedling tray 2, for example, so that oil can be applied while working. Since oil is applied while the sprayer 4 is moving, the entire chain can be oiled.

[0076] 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 also be used.

[0077] Next is another variation 1.

[0078] In the chemical spraying device 5 for 7-row and 8-row applications, a proximity sensor is attached to the U-shaped metal fitting of the frame to detect the folded state of the guide rail 3. When the U-shaped metal fitting and the left side are in contact, the proximity sensor is turned on (deployed state), and when they are not in contact, the proximity sensor is turned off (stored state).

[0079] In this way, by detecting the folded state, it is possible to determine whether to prevent operation of the sprayer 4 in the "storage" state or to activate the safety function.

[0080] Conventionally, rice transplanters with seven or more rows move by folding the seedling loading platform 2, and also folding the guide rails 3. In this case, the spreader 4 cannot be folded unless it is at the right end, so the first feed button is pressed briefly to move it to the right end, and a safety function is activated (which restricts movement when the right end switch is on) to prevent it from moving from the right end. However, if the controller is reset due to a surge during normal spraying and stops at the right end, even if the controller recovers,

[0081] (1) Did it happen to stop at the right edge?

[0082] (2) Did you briefly press the initial feed button to move it to the right edge? Conventional chemical spraying devices do not distinguish between (1) and (2), which causes restrictions and the sprayer 4 to stop at the right end.

[0083] Therefore, if the controller recovers from a state where sprayer 4 has stopped at the right end due to a problem (such as a controller reset due to a surge),

[0084] (i) If the proximity sensor is off, the spray unit will not move.

[0085] (ii) When the proximity sensor is on, the spraying unit moves.

[0086] The device is configured to distinguish between (i) and (ii) and operate accordingly.

[0087] As a result, when the rightmost switch is on, the sprayer 4 will not move when it is in the folded state (proximity sensor is off), but will be able to move when it is in the unfolded state (proximity sensor is on), making it possible to distinguish between (1) and (2) and determine whether it has stopped on its own or if it has been stopped voluntarily.

[0088] Next is another variation 2.

[0089] When the controller is restored from a state where the sprayer 4 has stopped at the right end due to a problem (such as a controller reset due to a surge) using an existing proximity sensor (used to determine whether the seedling tray 2 is folded) attached to the seedling tray 2 of a 10-row rice transplanter.

[0090] (i) When the proximity sensor of the 10-row rice transplanter planting section is on, the spraying unit does not move.

[0091] (ii) When the proximity sensor of the planting section of the 10-row rice transplanter is off, the spraying unit operates.

[0092] The device is configured to distinguish between (i) and (ii) and operate accordingly.

[0093] As a result, instead of the above-mentioned proximity sensor, the proximity sensor attached to the existing 10-row rice transplanter is used to determine the above problems (1) and (2) when the seedling tray 2 is folded.

[0094] The proximity sensor of the seedling loading platform 2 of the 10-row rice transplanter is in the stored state when on and in the deployed state when off, which is the opposite of the proximity sensor of the guide rail.

[0095] Next is another variation 3.

[0096] Conventional chemical spraying devices are equipped with safety features for all row numbers, but for rows of six or fewer, the sprayer 4 does not need to stop at the right end because it is not folded, and therefore safety features are not required. Therefore, if the number of threads is six or less, the above safety function will not be activated.

[0097] Next is another variation 4.

[0098] With conventional pesticide spraying devices, when the sprayer stops at the right end, the power lamp and the lamp on the monitor panel of the device light up rapidly to notify the user. However, normal operation can be restored by pressing and holding the initial feed button to perform the initial feed operation. However, if only the lamp lights up, there is a high possibility that the user will not notice and continue planting.

[0099] Therefore, when the controller does not recover due to a problem with the chemical spraying device (such as a controller reset due to a surge) and the sprayer 4 does not operate, the system determines this to be an error and sounds a buzzer. The buzzer sounds twice and loops.

[0100] If the proximity sensor is off and the rightmost switch remains on for more than 3 seconds, it is determined to be an error (during normal operation, the sprayer 4 is held at the rightmost position for 0.5 seconds).

[0101] As a result, the buzzer sounds, making it easier to notice. Also, by only detecting an error when the proximity sensor is on (deployed state), it is not mistakenly determined to be an error when operating normally (holding the right-most position in the stored state).

[0102] Next is another variation 5.

[0103] When the controller does not recover due to a problem with the chemical spraying device (such as a controller reset due to a surge) and the sprayer 4 does not operate, the system will determine this to be an error and display a pop-up on the monitor panel of the device. For example, it will display something like "An operation error has occurred in the chemical spraying device."

[0104] Next is another variation 6.

[0105] If the chemical spraying device stops in a state such as that of the above-mentioned variant example 4, the motor is forcibly operated once, after which the chemical spraying device operates normally (the malfunction is resolved).

[0106] Therefore, in the configuration of the above-mentioned modified example 4, when the initial payout button is pressed and held to return to normal operation (the rightmost switch is turned off), the buzzer is turned off. As a result, the buzzer is turned off as in the fourth modification.

[0107] Next is another variation 7.

[0108] If the chemical spraying device stops in a state such as that of the above-mentioned variant example 4, the motor is forcibly operated once, after which the chemical spraying device operates normally (the malfunction is resolved).

[0109] Therefore, in the configuration of the above-mentioned modified example 5, when the initial feed button is pressed and held to return to normal operation (the rightmost switch is turned off), the pop-up display on the monitor panel of this device is turned off.

[0110] Next is another variation 8.

[0111] If the chemical spraying device stops in a state such as that of the above-mentioned variant example 4, the motor is forcibly operated once, after which the chemical spraying device operates normally (the malfunction is resolved).

[0112] Therefore, in the configuration of the above-mentioned modified example 4, when the initial payout button is pressed and held to return to normal operation (when the count value of the rotation sensor (an existing sensor that detects the rotation of the gear for moving the unit) reaches the set number of pulses), the buzzer is turned off. This is the cancellation of the buzzer in the above-mentioned modified example 4.

[0113] Next is another variation 9.

[0114] If the chemical spraying device stops in a state such as that of the above-mentioned variant example 4, the motor is forcibly operated once, after which the chemical spraying device operates normally (the malfunction is resolved).

[0115] Therefore, in the configuration of the above-mentioned modified example 5, when the initial payout button is pressed and held to return to normal operation (when the count value of the rotation sensor (an existing sensor that detects the rotation of the gear for moving the unit) reaches the set number of pulses), the pop-up display on the monitor panel of this device is turned off. This cancels the pop-up display of the above-mentioned modified example 5.

[0116] Next is another variation 10.

[0117] The sprayer 4 of a conventional chemical spraying device repeats the following steps (1) and (2) to perform spraying operations: (1) balance move (the spraying unit moves slightly in the opposite direction to the lateral movement of the seedling table. Turning the central switch on and off three times moves to (2)), (2) spraying operation (after moving to the right end, the shutter is opened and the device moves to the left end to spray. The shutter is then closed, the device moves to the center position, and the device moves to (1)).

[0118] If the central switch is not turned on and off three times, the sprayer 4 stops, and when the planting clutch is released, the lateral movement of the seedling tray stops, causing the sprayer 4 to stop near the center.

[0119] However, when the rice planting work is finished and the guide rail 3 is to be folded, the spreader 4 needs to be moved to the right end.

[0120] Therefore, the chemical spraying device is configured so that when the planting clutch is disengaged, the shutter of the sprayer 4 closes, moves to the right end, and stops.

[0121] As a result, instead of stopping near the center, the shutter closes and moves to the right end, allowing the guide rail 3 to be folded smoothly. Next is another variation 11.

[0122] In the configuration of the above-described modified example 10, when the planting clutch is disengaged during the operation (1) (during the balance move), the sprayer 4 moves to the right end with the shutter closed and stops.

[0123] During the balance move, the shutter is closed, so it moves to the right edge.

[0124] Next is another variation 12.

[0125] In the configuration of the above variant 10, when the planting clutch is disengaged during operation (2) (spraying operation), the distance moved from the right end (count value of the rotation sensor (an existing sensor that detects the rotation of the gear for moving the unit)) is recorded, the shutter is closed, the unit is moved to the right end, and then stopped.

[0126] The shutter is open during spraying, so close it and move to the right end. The distance traveled during spraying is recorded and used in the next variant 13.

[0127] This type of spraying unit moves to the far right as soon as the planting clutch is released.

[0128] Next is another variation 13.

[0129] In the configuration of the above variant proposal 12, when the spraying unit is moved to the right end and stopped and the planting clutch is engaged, the shutter closes and moves to the left up to the recorded distance (count value), and then the shutter opens and moves to the left end to spray.

[0130] This prevents double spraying.

[0131] This type of sprayer 4 moves to the far right as soon as the planting clutch is released.

[0132] Next is another variation 14.

[0133] In the configuration of the above-mentioned variant 12, when the power of the chemical spraying device is turned off, the distance traveled to the right end (count value of the rotation sensor) is erased. When rice planting work is completed, it is reset. This type of sprayer moves to the right end as soon as the planting clutch is released.

[0134] Next is another variation 15.

[0135] In the above-mentioned modified examples 12 and 13, if the shutter is immediately closed and moved to the right end while spraying is in progress, there is a possibility that seedlings that have not been sprayed will be planted when the planting clutch is engaged again.

[0136] Therefore, in the configuration of the above-mentioned modified example 12, when the planting clutch is disengaged during operation (2) (spraying), the sprayer 4 is configured to spray all the way to the left end, then close the shutter and move to the right end and stop. This complete spraying solves the problem. When the planting clutch is disengaged, the sprayer 4 moves all the way to the right end after spraying all the way.

[0137] Next is another variation 16.

[0138] In conventional pesticide spraying devices, if the sprayer 4 is not in the center position but is at the right or left end, spraying operations during rice planting must not be performed, and the initial feed button must be pressed briefly to move it to the center position before rice planting can begin.

[0139] Therefore, in the configurations of the above-mentioned modified examples 11 and 15, after moving to the right end and stopping, when the planting clutch is engaged, the shutter moves to the center with the shutter closed and a balance move is performed. In this way, the problem is solved by returning to the center position and performing the balance move.

[0140] Next is another variation 17.

[0141] If the seedling loading platform makes two round trips (on→off twice) and then the planting clutch is turned off, and then the planting clutch is turned on and the seedling loading platform makes three round trips (on→off three times), there is a risk that the seedlings will not be sprayed in time.

[0142] Therefore, in the configurations of the above variants 11 and 16, the number of times the central switch turns on and off when the planting clutch is disengaged is counted, and the number of balance moves when the planting clutch is engaged is adjusted according to the count. If the balance move is made after one round trip of the seedling tray, it is adjusted to two, if the balance move is made after two round trips of the seedling tray, it is adjusted to one, etc. The adjustment is made so that there are a total of three on and off movements. The problem can be solved by adjusting the number of balance moves. Spraying is performed every three round trips.

[0143] Next is another variation 18.

[0144] When refilling seedlings or when folding the guide rail at the end of rice planting, it is necessary to briefly press the initial feed button to move the sprayer to the far right.

[0145] Therefore, when the sub-speed change of the rice transplanter is set to "moving," the sprayer 4 is configured to automatically move to the far right and stop. As a result, by automatically moving the sprayer 4 to the far right when the sub-speed change is set to "moving," it is possible to save time and effort.

[0146] When the planting clutch is "off", it is near the center, and when the auxiliary speed change is performed, it is at the right end. This is an example where it is not combined with the above modified example 8.

[0147] Next is another variation 19.

[0148] In the chemical spraying device, when the sub-speed of the rice transplanter is not set to "planting," the spraying unit automatically moves to the right end and stops. This has the same effect as the above-mentioned variation 18.

[0149] Next is another variation 20.

[0150] In conventional chemical spraying devices, if the sprayer 4 is not in the center position but is at the right or left end, the spraying operation during rice planting must not be performed, and the initial feed button must be pressed briefly to move it to the center position before rice planting can begin.

[0151] Therefore, in the above-mentioned modified examples 18 and 19, when the auxiliary speed change is changed from a position other than "moving" or "planting", for example from "neutral" to "planting", the sprayer 4 of the chemical spraying device is configured to move to the center.

[0152] Next is another variation 21.

[0153] For 6 rows or less, the left side should not be folded. Also, for 10-row rice transplanters, both sides may need to be folded, so it is better not to move sprayer 4 to the right end.

[0154] Therefore, in the configurations of the above-mentioned modified examples 18 and 19, when the number of threads is 6 or less, the configuration is made so that the threads do not automatically move to the right end.

[0155] Next is another variation 22.

[0156] Even when folding both sides of the seedling tray in the 10-row type, some people fold only the left side because they want to place sprayer 4 on the right end. Also, there are situations where it would be inconvenient if it moved automatically for inspections, etc.

[0157] Therefore, in the configurations of the above-mentioned modified examples 10, 18, and 19, a mode can be set from the monitor to determine whether or not the sprayer 4 is automatically moved to the right end. The method of moving the spraying unit can be selected depending on the situation.

[0158] Next is another variation 23.

[0159] A photoelectric sensor is attached under the sprayer 4 of the chemical spraying device to determine whether or not seedlings are present in the area to be sprayed.

[0160] Next is another variation 24.

[0161] In the configuration of the above-mentioned modified example 23, when the center mascot is flashing red during planting (when a decrease in seedlings is detected) and the rightmost switch is turned on, the photoelectric sensor is turned on. This is used in modified example 27, which will be described later. When a decrease in seedlings is not detected, there are seedlings, so there is no need to turn on the photoelectric sensor.

[0162] Next is another variation 25.

[0163] In the configurations of the above-mentioned modified examples 23 and 24, the photoelectric sensor of the sprayer 4 is turned on and then the sprayer 4 moves from the right end to the left end, and then the photoelectric sensor is turned off. This is a diagnostic operation for determining whether or not there are seedlings. This is used in modified example 27, which will be described later.

[0164] Next is another variation 26.

[0165] In the configuration of the above-mentioned modified example 23, the photoelectric sensor is turned off during the balance move. This is used in modified example 27 described later.

[0166] Next is another variation 27.

[0167] In the configurations of the above variants 24 to 26, if the center mascot lamp is flashing red (a state in which a decrease in seedlings is detected) and a diagnostic operation (variation 25) using the photoelectric sensor of the sprayer 4 during planting determines that there are no seedlings to spray in the rows, if a decrease in seedlings is also detected during the next spraying operation, the shutter of the sprayer 4 will close and spraying will not be performed in the rows in which there are no seedlings. This prevents unnecessary spraying.

[0168] Next is another variation 28.

[0169] In the configuration of the above-mentioned variant 27, when the center mascot lamp is flashing red (a state in which a decrease in seedlings is detected) and the diagnostic operation of the photoelectric sensor of the sprayer 4 determines that there are no seedlings in all rows, the sprayer 4 is moved to the right end and stopped. When there are no seedlings, there is no need to operate the chemical spraying device, so it is stopped.

[0170] Next is another variation 29.

[0171] In the configuration of the above variant 27, rows with no seedlings are identified and spraying is performed once in order to close the shutter at the next spraying time.

[0172] Therefore, the movement of sprayer 4 (1) Balance move 2 times, (2) Diagnostic operation (with the shutter closed from the right end to the left end, the photoelectric sensor is turned on to determine whether or not seedlings are present. After the diagnosis, the photoelectric sensor is turned off). (3) Spraying operation (moving from the left end to the right end with the shutter open), The configuration is such that (1), (2), and (3) are repeated.

[0173] The spraying operation that addresses the issue with Modification 10 above has been changed. The number of balance moves has been reduced and a diagnostic operation has been added. Next, by combining this with Modification 30, the issue will be resolved.

[0174] Next is another variation 30.

[0175] In the configuration of the above-mentioned modified example 29, if the diagnostic operation (2) determines that there are no seedlings in a row during the spraying operation (3), the shutters are closed only in the row that does not have seedlings. This solves the problem of modified example 29 and prevents unnecessary spraying.

[0176] Next is another variation 31.

[0177] In conventional pesticide spraying devices, the power lamp lights up when the power is on and flashes during spraying. It also flashes rapidly when an error is displayed.

[0178] In the configurations of the above-mentioned modified examples 27 and 30, the power lamp of the chemical spraying device is configured to flash at high speed while the sprayer 4 is not spraying rows with no seedlings (the shutter is closed).

[0179] The length of the rapid flashing indicates the number of rows without seedlings. Also, the rapid flashing indicates that there are rows without seedlings, informing the operator that seedlings should be replenished.

[0180] Next is another variation 32.

[0181] In the configuration of the above variant example 31, the lamp on the monitor panel of this device is configured to flash at high speed in conjunction with the power lamp of the pesticide spraying device.

[0182] This allows the operator to know the number of rows without seedlings by the length of the rapid flashing. Also, by flashing rapidly to indicate that there are rows without seedlings, the operator is notified to replenish seedlings.

[0183] Next is another variation 33.

[0184] In conventional chemical spraying devices, when spraying is completed, the sprayer 4 is moved by briefly pressing the initial feed button. The sprayer moves and stops in the following positions: right edge → left edge → center → right edge... However, if you press the button twice or make a mistake, you will need to press it multiple times.

[0185] Therefore, the sprayer 4 of the chemical spraying device can be moved to the right end, left end, or center by setting the monitor screen of the device, which allows the spraying unit to be moved easily and reliably.

[0186] Next is another variation 34.

[0187] A photoelectric sensor is attached below the shutter of the sprayer 4 to determine whether or not the pesticide is being sprayed. This type uses a photoelectric sensor to determine whether or not the pesticide is being sprayed. This will be used in variant 36, which will be described later.

[0188] Next is another variation 35.

[0189] A detection switch is attached to the hopper of the chemical spraying device to determine whether chemicals are present or not. Determining whether chemicals are present or not. This type uses a detection switch to determine whether chemicals are present or not. A detection switch similar to that used in the fertilizer hopper of a rice transplanter is attached to the hopper of the chemical spraying device.

[0190] Next is another variation 36.

[0191] In the above-mentioned variant 34, if the photoelectric sensor below the shutter of the sprayer 4 of the pesticide spraying device does not respond for a certain period of time during spraying operation (when no pesticide is being sprayed), the shutter of the sprayer closes, moves to the center, and stops. By stopping when there is no pesticide, it is possible to prevent forgetting to spray. The certain period of no response is the time it takes to move from the right end to the left end, and if the photoelectric sensor does not respond, it is determined that no pesticide has been sprayed.

[0192] Next is another variation 37.

[0193] In the above variant 35, if the detection switch of the hopper of the pesticide spraying device does not react, the shutter of the spraying unit closes after the spraying operation (after moving from the right end to the left end), moves to the center, and stops. This has the same effect as the above variant 36. It stops when there is no pesticide. This prevents forgetting to spray.

[0194] Next is another variation 38.

[0195] In the above-mentioned modified examples 36 and 37, if the photoelectric sensor (or the detection sensor) does not respond for a certain period of time, the above lamp on the monitor panel of the device is configured to flash rapidly in conjunction with the power lamp of the drug spraying device, to notify the user that drug needs to be replenished.

[0196] Next is another variation 39.

[0197] If the above lamp is just flashing rapidly, it is likely to be mistaken for an error.

[0198] Therefore, in the above-mentioned modified example 38, a pop-up message is displayed on the monitor of the device to notify the user to replenish the medicine, for example, "Please replenish the medicine in the medicine spraying device." This solves the problem of the above-mentioned modified example 30.

[0199] Next is another variation 40.

[0200] When the detection switch of the drug spraying device reacts (when the drug is replenished), the pop-up display is turned off.

[0201] Next is another variation 41.

[0202] There is no need to add chemicals when the chemical spraying device is first dispensed.

[0203] In the above-mentioned variant 35, the detection switch is configured to be enabled only during the second or subsequent spraying operation (not enabled during the first dispensing operation). This prevents the configuration that notifies the user to refill (variations 38 and 39) from being activated during any other spraying operation than the second or subsequent spraying operation. If the medicine is already in the dispenser during the first dispensing operation, the medicine must be collected in a measuring cup.

[0204] Next is another variation 42.

[0205] In the configurations of the above-mentioned modified examples 10 to 17, the operation of moving the sprayer 4 to the right end and returning it by operating the planting clutch is performed only when the folded state of the guide rail detected by the proximity sensor (modified example 1) is "unfolded."

[0206] When the planting clutch is turned on and off to automatically operate the spreader 4, the guide rail will be damaged if it is in the retracted state. This problem can be solved by only allowing the guide rail to move to the right end and return when it is in the extended state.

[0207] Next is another variation 43.

[0208] If the spraying unit is automatically activated by operating the sub-transmission, it will be damaged if the machine is in the stored position.

[0209] Therefore, in the configurations of the above-mentioned modified examples 18 to 20, the right-end shifting and return operation of the spreader 4 by operating the auxiliary speed changer is performed only when the folded state of the guide rail detected by the proximity sensor is "unfolded." By performing the right-end shifting and return operation only when the guide rail is unfolded, the problem is solved.

[0210] Next is another variation 44.

[0211] If the planting clutch is disengaged and the secondary transmission is not at planting speed, the sprayer 4 will be forced to the right edge due to the contents of the above variants 10 to 20, 42, and 43, which will satisfy the error conditions of variant 2 above and result in a false error detection.

[0212] Therefore, in the configurations of the above-mentioned variants 4, 42, and 43, an error determination of an operational abnormality in the chemical spraying device is performed when the guide rail is deployed, the planting clutch is engaged, and the secondary transmission is at the planting speed. Error detection for the chemical spraying device is performed only under conditions where operation is not restricted, thereby preventing erroneous detection.

[0213] Next is another variation 45.

[0214] The retracted state of the guide rails is a non-working state, and if the planting clutch is engaged in this state, the seedling carrier is moved sideways, and the chemical spraying device is activated, the chemical spraying device will be damaged.

[0215] Therefore, in the configuration of the above-mentioned modified example 1, when the guide rail is in the retracted state, a restriction is set so that the planting clutch does not engage even when the planting operation is performed. When the planting clutch is not in the non-working state, the planting clutch does not engage, notifying the operator that the chemical spraying device has been damaged or forgotten to be deployed.

[0216] Next is another variation 46.

[0217] The retracted state of the guide rails is a non-working state, and if the planting clutch is engaged in this state, the seedling carrier is moved sideways, and the chemical spraying device is activated, the chemical spraying device will be damaged.

[0218] Therefore, in the configuration of the above-mentioned modified example 1, if the guide rail storage state is detected while the planting clutch is engaged, the planting clutch is forcibly disengaged. By forcibly disengaging the planting clutch when the planting clutch is in a non-working state, the operator is notified that the chemical spraying device has been damaged or forgotten to be deployed.

[0219] Next is another variation 47.

[0220] The retracted state of the guide rails is a non-working state, and if the planting clutch is engaged in this state, the seedling carrier is moved sideways, and the chemical spraying device is activated, the chemical spraying device will be damaged.

[0221] Therefore, in the configurations of the above-mentioned variants 45 and 46, when the planting clutch is restricted due to the planting operation, a pop-up message is displayed on the monitor. For example, it displays "The guide rail is retracted. Please unfold the rail when planting." When not in operation, the planting clutch is prevented from engaging, informing the operator that the planting clutch has been damaged or forgotten to be unfolded.

[0222] Next is another variation 48.

[0223] The retracted state of the guide rails is a non-working state, and if the planting clutch is engaged in this state, the seedling carrier is moved sideways, and the chemical spraying device is activated, the chemical spraying device will be damaged.

[0224] Therefore, in the configurations of the above-mentioned variants 45 and 46, a buzzer is configured to sound three times when the planting clutch is restricted during the planting operation. The planting clutch is prevented from engaging when the planting operation is not in progress, thereby informing the operator that the chemical spraying device has been damaged or forgotten to be deployed.

[0225] Next is another variation 49.

[0226] The retracted state of the guide rails is a non-working state, and if the planting clutch is engaged in this state, the seedling carrier is moved sideways, and the chemical spraying device is activated, the chemical spraying device will be damaged.

[0227] Therefore, in the configuration of the above-mentioned variant 1, when the guard is in the stored state, the power relay of the chemical spraying device is turned off to turn off the power to the chemical spraying device. By turning off the power to the chemical spraying device when not in operation, damage to the chemical spraying device is prevented.

[0228] Next is another variation 50.

[0229] When moving, the device is in a non-working state, and if the pesticide spraying device malfunctions, it will be damaged.

[0230] Therefore, in the configuration of the above-mentioned variant example 1, when the secondary speed change is the travel speed, the power relay of the drug spraying device is turned OFF to cut off the power to the drug spraying device.

[0231] When not in use, the power to the pesticide spraying device is turned off to prevent damage to the device.

[0232] Next is another variation 51.

[0233] The configuration of the chemical spraying device determines the installed model based on the combination of inputs for model switch 1, model switch 2, 4-row switch, and 10-row switch, and the position where the right-most switch is pressed is set as the base point, and the number of pulses of the rail rotation sensor from that point is counted to detect to which row the sprayer 4 has moved. This tells you to which position the sprayer 4 has operated.

[0234] Next is another variation 52.

[0235] In the configurations of the above-mentioned modified examples 27 and 30, the position of the sprayer 4 is detected according to the contents of the above-mentioned modified example 51, thereby detecting which row does not have seedlings.

[0236] By combining a photoelectric sensor and a rail rotation sensor, it is possible to detect which row does not have any seedlings. [Industrial Applicability]

[0237] To provide a rice transplanter equipped with a seedling-carrying table for planting seedlings, which is most suitable for a rice transplanter because it can prevent the seedling-carrying table from protruding backward when folded and can store a removed hopper part in an appropriate position. [Explanation of symbols]

[0238] 1. Body 2 seedling trays 2a Left and right sides 2b central part 2c bracket 2d spindle 3 Guide rails 3a Left and right sides 3b central part 3c Decorative materials 4 Spreader 4a Hopper section 4b Sprayer body 5. Chemical spraying device 6 Support column 6a top end 6b Bottom edge 6c Arm 6d sub-post 6e Connector (knob bolt) 7 Hinge 8-1, 8-2, 8-3 Zipper fasteners 9 racks 10 Support Frame 10a tip 10b Side (bar member) 16 folding axis frame 16a axis 17 Regulatory member (regulatory rod) 18 Receiving rod 19 Stopper 20 Center end face 21 Both side end faces 30 Outer end face 31 Regulatory Plate 32 Protrusion 33 Auxiliary Step 33a Lattice section 33b Back side 34 Hopper mounting fixture 34a Receiving part 34b Clamping part 35 Rubber Band 36 Deployment detection switch 37 Windows 38 Storage section 39 Oil pump 40 Hose 100 control section Z center position

Claims

1. A seedling loading platform installed at the rear of the vehicle body, the side of which can be rotated to the center and folded; A chemical spraying device having a guide rail attached in the left-right direction along the seedling loading table and a sprayer for applying chemicals that moves left and right on the guide rail; A rice transplanter equipped with a rotatable auxiliary step, The sprayer has a detachable hopper portion on the sprayer body, The side portions of the guide rail are foldable by rotating toward the center portion 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, When folding the seedling tray, first fold the side of the guide rail, rotate the support pole forward compared to the normal posture, and then fold the seedling tray so that the folded guide rail is sandwiched between the side of the folded seedling tray and the center of the seedling tray. A rice transplanter characterized in that the hopper section detached when the seedling loading table and the guide rail are folded is detachably attached to the back side of the rotatable auxiliary step.

2. the auxiliary step has a grating portion, a hopper portion attachment tool for attaching the hopper portion to the back side of the auxiliary step; The rice transplanter according to claim 1, wherein the hopper section mounting fixture has a receiving portion into which the hopper section is fitted and fixed, and a clamping portion that holds the receiving portion and clamps a portion of the lattice section from the front and back.

3. The rice transplanter according to claim 2, wherein the hopper portion is fitted into the receiving portion and then fixed with a rubber band.

4. An unfolding detection switch is provided to detect whether the seedling tray or guide rail is unfolded or folded; The rice transplanter according to claim 3, wherein when the seedling tray or guide rail is folded, the control unit does not move the sprayer even if power to the sprayer is connected.

5. The rice transplanter described in claim 4, wherein the unfolding detection switch is arranged in the center of the seedling loading table or the center of the guide rail, and detects folding when a corresponding part of the side of the folded seedling loading table or the side of the guide rail abuts against the unfolding detection switch.

6. A fastener having a hook is attached to the outer end surface of the side of the guide rail, and a protrusion onto which the hook of the fastener is hooked is arranged at a corresponding position on the center of the guide rail, the protrusion is attached to a trapezoidal convex regulating plate erected in the central portion, and a trapezoidal concave notch of a corresponding shape is formed in the outer end surface of the side portion of the guide rail, The rice transplanter according to claim 5, wherein when the side portions of the guide rails are folded, the notches on the outer end surfaces fit into the regulating plates, thereby regulating movement of the outer end surfaces due to vibration.

7. The rice transplanter according to claim 6, wherein the sprayer is equipped with a reservoir for storing oil to be sprayed, an oil pump, and an oil hose, which move together with the sprayer so that oil can be sprayed during operation.

8. The guide rail is disposed within a box-shaped decorative member and is detachably supported by the support column, The rice transplanter according to claim 7, wherein the guide rail is rotatably supported and held at a predetermined inclination at a predetermined location in the central portion when removed from the support pole.

9. 9. The rice transplanter according to claim 8, wherein the spreader is stopped in a location where the support pole is not erected before folding the left and right side portions of the guide rail.

Images