rice transplanter

Abstract

A rice transplanter is provided in which the guide rail does not become an obstruction when the seedling platform is folded, thereby preventing the seedling platform from extending rearward. The rice transplanter is characterized by comprising: a seedling platform mounted at the rear of the vehicle body, wherein either or both of its left and right sides can be moved towards the central side for folding; and a pesticide dispensing device having a guide rail and a dispensing machine for applying pesticide, the guide rail being arranged along the seedling platform in a left-right direction, the dispensing machine moving left and right on the guide rail, either or both of the left and right ends of the guide rail being able to move towards the central part of the guide rail for folding, the central part of the guide rail being supported by a support column, the support column being erected on the seedling platform in a manner capable of moving forward and backward, wherein when folding the seedling platform, either or both of the left and right ends of the guide rail are folded first, and the seedling platform is folded after the support column is rotated forward compared to its normal posture, such that the folded guide rail is sandwiched between either or both of the folded left and right sides of the seedling platform and the central side of the seedling platform.

Description

Technical Field

[0001] This invention relates to a rice transplanter equipped with a seedling platform for transplanting seedlings. Background Technology

[0002] Previously, rice transplanters were known to fold the seedling platform, either on one or both sides, toward the center when not in operation. For example, as shown in Patent Document 1, a rice transplanter is known in which the seedling platform is configured such that the left and right seedling platform portions are asymmetrical and can be folded in the left and right directions, and the pesticide dispensing device has a guide rail along the left and right directions and a movable dispenser that is guided by the guide rail to move laterally along the seedling surface. The guide rail is composed of multiple segmented guide rails that are fixed to each seedling platform portion with different lengths in the left and right directions, and is arranged such that, in the use state, the longer segmented guide rail is located in a position closer to the front of the shorter segmented guide rail.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2014-187942 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] However, in such rice transplanters, even if the seedling platform is folded, the pesticide dispensing device is not folded.

[0008] In this invention, considering the problems of such conventional rice transplanters, the objective is to prevent the guide rail from becoming an obstacle when the seedling platform is folded, thereby inhibiting the seedling platform from extending backward.

[0009] Methods for solving problems

[0010] The first aspect of the present invention relates to a rice transplanter, characterized in that it comprises: a seedling platform 2, which is mounted on the rear of a vehicle body 1, and either or both of its left and right sides can be moved toward the central side and folded; and a pesticide dispensing device 5, which has a guide rail 3 and a dispensing machine for applying pesticide, the guide rail 3 being arranged along the seedling platform 2 in a left-right direction, the dispensing machine moving left and right on the guide rail 3, either or both of the left and right ends of the guide rail 3 being able to be moved toward the central part of the guide rail 3 and folded, the central part of the guide rail 3 being supported by a support column 6, the support column 6 being erected on the seedling platform 2 in a forward-backward direction, and when folding the seedling platform 2, either or both of the left and right ends of the guide rail 3 are folded first, and the seedling platform 2 is folded after the support column 6 is moved forward compared to its normal posture, such that the folded guide rail 3 is sandwiched between either or both of the folded left and right sides of the seedling platform 2 and the central part of the seedling platform 2.

[0011] The second aspect of the rice transplanter is based on the first aspect of the rice transplanter of the present invention. The rice transplanter is provided with a limiting member 17. When either or both of the left and right sides of the seedling platform 2 are folded toward the central side, the limiting member 17 restricts the movement for folding toward the central side to a predetermined position so that the seedling platform 2 does not come into contact with the guide rail 3 and its associated components.

[0012] The rice transplanter of the third aspect of the present invention is based on the rice transplanter of the second aspect of the present invention, characterized in that the seedling platform 2, which can be moved and folded by either or both of the left and right sides, is a structure that moves towards the central side by a moving mechanism, wherein the moving angle of the moving mechanism exceeds 90 degrees and is less than 180 degrees.

[0013] The rice transplanter of the fourth aspect of the present invention is based on the rice transplanter of any one of the first to third aspects, wherein either or both of the left and right ends of the guide rail 3 are supported by a support frame 10 in a detachable manner, and the support frame 10 is movably erected on either or both of the left and right sides of the seedling platform 2 to be folded. When the guide rail 3 is folded, the support frame 10 separates from either or both of the left and right ends of the guide rail 3, and then the support frame 10 moves in a way that retracts from the erected state, and then either or both of the left and right sides of the seedling platform 2 are folded.

[0014] Invention Effects

[0015] According to the present invention, by tilting the guide rail forward, the guide rail will not become an obstacle when folding the seedling platform, and the rearward extension of the seedling platform can be suppressed. Attached Figure Description

[0016] Figure 1 This is a side view of a rice transplanter according to an embodiment of the present invention.

[0017] Figure 2 This is a partial 3D view of the rice transplanter from the rear.

[0018] Figure 3 This is a three-dimensional view of the rice transplanter from the rear.

[0019] Figure 4 This is a side view of the decorative parts and the end of the guide rail of the rice transplanter.

[0020] Figure 5 It is a 3D view of the decorative parts and guide rails.

[0021] Figure 6 It is a three-dimensional view of the lower surface of the decorative parts and guide rails.

[0022] Figure 7 It is a three-dimensional view of the upper surface of the decorative parts and guide rails.

[0023] Figure 8 It is a three-dimensional diagram showing the state of the left and right ends after they have moved relative to the central part.

[0024] Figure 9 It is a three-dimensional diagram showing the state of the left and right ends after they have moved relative to the central part.

[0025] Figure 10 It is a three-dimensional diagram showing the left and right ends folded relative to the central part.

[0026] Figure 11 It is a 3D view of the seedling platform, decorative components, and guide rails.

[0027] Figure 12 This is a side view of the seedling platform, decorative components, and guide rails.

[0028] Figure 13 It is a three-dimensional view of the seedling platform, the decorative components after folding and moving forward, and the guide rails.

[0029] Figure 14 This is a side view of the seedling platform, the decorative components after folding and moving forward, and the guide rails.

[0030] Figure 15 It is a partial 3D view of the left and right ends after they have been folded relative to the central part.

[0031] Figure 16 (A) and (B) are schematic side views centered on the stop of the rice transplanter.

[0032] Figure 17It is a partial three-dimensional view of the state after the left and right ends are folded relative to the central part and moved forward.

[0033] Figure 18 (A) and (B) are three-dimensional diagrams showing the folding of decorative parts and guide rails.

[0034] Figure 19 This is a side view of the supporting pillars and auxiliary pillars of the rice transplanter.

[0035] Figure 20 It is a three-dimensional view of the seedling platform and supporting frame.

[0036] Figure 21 It is a three-dimensional view of the seedling platform and the supporting frame in the outward-open state.

[0037] Figure 22 yes Figure 20 A magnified view of a portion of the image.

[0038] Figure 23 yes Figure 21 A magnified view of a portion of the image.

[0039] Figure 24 (A) and (B) are three-dimensional diagrams showing the movement of the support frame.

[0040] Figure 25 This is a 3D view of the rice transplanter's pilot rod and seedling platform.

[0041] Figure 26 yes Figure 20 A magnified view of a portion of the image.

[0042] Figure 27 This is a 3D view of the left and right sides of the seedling platform of the rice transplanter after they have been folded.

[0043] Figure 28 This is a three-dimensional view of the rice transplanter from a lower rear view, showing the left and right sides of the seedling platform folded up.

[0044] Figure 29 This is a three-dimensional view of the rice transplanter's seedling platform, decorative components, guide rails, and spreader, viewed from the rear.

[0045] Figure 30 This is a three-dimensional view of the rice transplanter's seedling platform, decorative components, guide rails, and spreader, viewed from the rear. Detailed Implementation

[0046] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0047] Figure 1 This is a side view of a rice transplanter according to an embodiment of the present invention. Figure 2This is a three-dimensional view centered on the seedling platform of the rice transplanter. The following diagrams use the direction of the rice transplanter's movement as a reference, categorized as forward / backward and left / right.

[0048] exist Figure 1 , Figure 2 In the diagram, 1 represents the vehicle body, and a seedling platform 2 is installed at the rear of the vehicle body 1. The left and right sides 2a and 2a of the seedling platform 2 can be rotated (rotated) towards the central side 2b and folded.

[0049] Additionally, a guide rail 3 is arranged along the seedling platform 2 in the left-right direction. This guide rail 3 is surrounded by a decorative component 3c. This decorative component 3c, along with other wiring, is an example of an accessory component of the present invention. Furthermore, a dispensing machine 4 is provided that moves left and right along the guide rail 3 to distribute the pesticide. The guide rail 3 and the dispensing machine 4 constitute a pesticide dispensing device 5. The decorative component 3c functions as a resin cable support cover.

[0050] The left and right ends 3a and 3a of the guide rail 3 can rotate and fold to the side of the central part 3b of the guide rail 3.

[0051] Figure 3 It's the back of the rice transplanter. Figure 4 This is a diagram of the left end of the guide rail 3, which is surrounded by the decorative component 3c. Figure 5 This is a perspective view showing the outline of the guide rail 3 surrounded by the decorative component 3c.

[0052] Figure 6 This is a perspective view from below showing the contact state between the left and right ends 3a and the central part 3b. Figure 7 This is a perspective view from above showing the contact state between the left and right ends 3a and the central part 3b. Figure 8 , Figure 9 It is a three-dimensional diagram showing the left and right ends 3a rotated approximately 90 degrees upwards. Figure 10 It is a perspective view showing the state in which the left and right ends 3a are rotated 180 degrees and placed on the central part 3b.

[0053] That is, such as Figure 7 As shown, the upper sides of the left and right ends 3a of the guide rail 3 are connected to the central part 3b by hinges 7.

[0054] On the other hand, such as Figure 5 , Figure 6 As shown, the lower sides of the left and right ends 3a of the guide rail 3 are connected to the central portion 3b by a snap fastener (so-called snap lock) 8. Therefore, by releasing the snap fastener 8, the left and right ends 3a of the guide rail 3 can be easily rotated upwards and folded to the upper surface of the central portion 3b. When folded, the snap fastener 8 can also be used to fix the left and right ends 3a to the central portion 3b.

[0055] In addition, Figure 10 In the middle, 3c1 and 3c2 are convex and concave parts, respectively, and are positioning parts used to ensure that the left and right ends 3a and the central part 3b abut in the correct position when unfolded and extended.

[0056] then, Figure 11 This is a perspective view of the seedling platform 2, and a perspective view of the guide rail 3 surrounded by decorative component 3c in operation. Figure 12 This is a side view, showing the guide rail 3, surrounded by decorative component 3c, standing approximately vertically in a state separated from the seedling platform 2. In this state, the distributor 4 moves left and right on the guide rail 3 to distribute the pesticide. The pesticide hopper of the distributor 4 is omitted from the figure.

[0057] Figure 15 The diagram shows the guide rail 3, surrounded by decorative component 3c, folded upwards as described above. A gear driven by a motor within the distributor 4 meshes with a rack 9 fixed to the front of the guide rail 3, allowing the distributor 4 to move left and right on the guide rail 3. Alternatively, a fixed chain can be used instead of the rack.

[0058] exist Figure 15 In the middle, a support column 6, which supports the guide rail 3 and rack 9 surrounded by decorative parts 3c, is erected on the seedling platform 2. That is, the upper end 6a of the support column 6 is fixed to the guide rail 3, and the lower end 6b of the support column 6 is connected to the bracket 2c provided on the seedling platform 2 via a support shaft 2d in a manner that allows it to rotate in the front-back direction.

[0059] On the other hand, near the upper end 6a of the support column 6, there is an arm 6c that extends forward in an arc shape and has an elongated hole 6c1 (see reference). Figure 19 Furthermore, a secondary support column 6d is erected on the central side 2b of the seedling platform 2, facing the position of the arm 6c.

[0060] Furthermore, the elongated hole 6c1 of arm 6c and the upper end 6d1 of secondary support 6d can be fixed at any position by means of knob bolt 6e. Knob bolt 6e is an example of the connecting component of the present invention.

[0061] Such a combination of support column 6, bracket 2c, arm 6c, secondary support column 6d, etc., is arranged in three places along the left and right direction on the central part 3b of guide rail 3 (see reference). Figure 18 ).

[0062] Figure 17 The diagram shows the state in which the support column 6 is tilted forward, and the guide rail 3 surrounded by the decorative component 3c approaches the seedling platform 2. Figure 13 This is a three-dimensional view showing the entirety of the seedling platform 2 in this state. Figure 14This is its side view. That is, loosen the knob bolt 6e, move the arm 6c forward, the guide rail 3 approaches the seedling platform 2, tilt forward until the end 6d1 of the secondary support 6d reaches the rear end of the elongated hole 6c1, and tighten the knob bolt 6e here. Thus, the guide rail 3 surrounded by the decorative part 3c is stably fixed in a low position.

[0063] However, in normal operation, the left and right ends 3a of the guide rail 3 surrounded by the decorative part 3c are not folded and unfolded, but the outermost ends 3a1 of the left and right ends 3a (refer to Figure 4 , Figure 5 , Figure 11 , Figure 12 , Figure 18 It is connected to the seedling platform 2 as described below. This allows for stable drug distribution.

[0064] A snap-on fastener 8 is provided at the outer end 3a1 of the left and right ends 3a of the guide rail 3 (see reference). Figure 4 Additionally, a triangular support frame 10 is erected at the position of the seedling platform 2 facing the outer end 3a1, in a manner that allows it to rotate outward (see reference). Figure 5 , Figure 11 , Figure 20 The end 10a of the support frame 10 and the outer ends 3a1 of the left and right ends 3a of the guide rail 3 can be easily installed and removed by the operation of the snap fastener 8 (see reference). Figure 4 ).

[0065] In addition, such as Figure 21 As shown, the support frame 10 can rotate outward from its upright position as described above, parallel to the surfaces of the left and right sides 2a of the seedling platform 2. When the left and right sides 2a of the seedling platform 2 are folded, the triangular support frame 10, when upright, would become an obstacle to the guide rail 3 and the central side 2b of the seedling platform 2. Therefore, in order not to become an obstacle, the support frame 10 is unfolded outward.

[0066] That is, such as Figure 20 As shown, the side 10b of the triangular support frame 10 near the seedling platform 2 is composed of a long, slender rod member 10b that extends upwards and slightly downwards. Figure 22 , Figure 23 As shown, the lower end 10b1 of the rod component 10b is rotatably supported by a bracket 11 fixed to the seedling platform 2. A protrusion 10b2 is welded to the rod component 10b at a position slightly above the lower end 10b1. A protrusion protrudes downwards from the lower surface of the end of the protrusion 10b2. Additionally, a guide plate 12 is welded to a position slightly above the bracket 11 fixed to the seedling platform 2. Two holes 12a1 and 12a2 are provided in the guide plate 12. The guide plate 12 is located below the protrusion 10b2.

[0067] The shape and size relationship of the protrusion on the lower surface of the end of the aforementioned tab 10b2 that can fit into the aforementioned holes 12a1 and 12a2. Additionally, reference numeral 13 indicates a reinforcing plate of the triangular support frame 10.

[0068] like Figure 26 As shown, the rod component 10b has a spring 14 embedded in its upper end, allowing it to be moved up and down by hand. That is, if the rod component 10b is lifted upwards, the protrusion of the tab 10b2, which engages with either hole 12a1 or 12a2 of the guide plate 12, disengages, allowing the triangular support frame 10 to unfold outwards and also to close freely inwards. The rod component 10b can be lowered by aligning the protrusion with the hole 12a1 or 12a2 on the side to be positioned. Hole 12a1 is used for positioning when opened outwards, and hole 12a2 is used for positioning when the rod is upright for operation.

[0069] in addition, Figure 25 The pilot rod 15, which is used to separate seedlings to a certain extent, utilizes the hollow hole 12a2 (see reference). Figure 23 The diagram shows the insertion and storage of the guide rod 15. Specifically, when the left and right sides 2a of the seedling platform 2 are folded during non-operational periods, as described above, the support frame 10 is unfolded outwards. Therefore, the protrusion disengages from the hole 12a2, thus emptying the hole 12a2. Consequently, the empty hole 12a2 can be used to store the guide rod 15. Figure 25 This situation is illustrated.

[0070] In this way, if the pilot rod 15 is not removed during operation, the triangular support frame 10 cannot be erected for operation, thus preventing the pilot rod 15 from being forgotten to be installed in its original position.

[0071] In addition, for this purpose, the thickness of the portion of the pilot rod 15 that enters the hole 12a2 needs to be smaller than the diameter of the hole 12a2.

[0072] then, Figure 27 This is a three-dimensional view taken from the rear, showing the state after the left and right sides 2a of the seedling platform 2 have been folded. Figure 28 This is a schematic diagram viewed from the lower side, roughly from the back. Here, 16 is the folding shaft frame, which is erected on the seedling platform 2, with its shaft 16a as the center, and the left and right sides 2a folded inward.

[0073] like Figure 28As shown, a limiting rod 17 is fixed in an upright position on the upper outermost side of the left and right side portions 2a. When the left and right side portions 2a are folded, they are positioned facing the central side portion 2b of the seedling platform 2, i.e., facing downwards. On the other hand, at the target position of the limiting rod 17 moved to by the folding of the limiting rod 17 on the central side portion 2b of the seedling platform 2, a receiving rod 18 with a recessed portion at its upper end is erected to receive the lower end of the limiting rod 17 as it moves downwards. This limiting rod 17 is an example of a limiting component of the present invention.

[0074] With this structure, when the left and right sides 2a of the seedling platform 2 are folded, a space of a predetermined size can be formed between the left and right sides 2a and the central side 2b. Therefore, collisions with the guide rail 3, which is surrounded by decorative parts 3c and is folded into this space, can be prevented. In addition, the distributor 4 stops between the support pillars 6.

[0075] Furthermore, to prevent malfunctions related to the operation of the spreader 4 during storage, the following structure is adopted: Power for the spreader 4 is obtained from the normally right end 3a of the left and right ends 3a. Currently, when folding the left and right ends 3a, or only folding the right end 3a, the power connector is removed before folding, so there is no need to worry about the spreader 4 moving.

[0076] In contrast, when only the left end 3a is folded without folding the right end 3a, the power supply is connected to the spreader 4. Therefore, it is possible for the spreader 4 to move and fall from the open part of the left crease due to malfunction.

[0077] Therefore, to prevent it from falling, it is preferable to place the stop 19, which protrudes during the folding action, near the open portion of the crease formed during folding. For example, in Figure 10 , Figure 15 In the diagram, 20 is the end face of the crease on the central part 3b side, and 21 is the end face of the crease on the left and right ends 3a side. In the folded state, they are in a contacting relationship. Figure 15 As shown, the stop 19 can protrude from this vicinity toward the distributor 4.

[0078] Moreover, in detail, such as Figure 16 As shown in (A) and (B) (top views omitting hinge 7), a stop mechanism is arranged inside the central portion 3b near the end face 20. Furthermore, Figure 16 (A) shows the left and right ends 3a in an extended state without being folded. Figure 16 (B) shows the state of the left and right ends 3a during the upward folding process.

[0079] A shaft 22, parallel to the longitudinal direction (left-right direction) of the central portion 3b, is disposed inside the central portion 3b. This shaft 22 is held by a retaining portion 24 fixed to the central portion 3b and is capable of sliding left and right. Furthermore, a flange portion 23 is fixed at the midpoint of the shaft 22, and a compression spring 25 is provided between the flange portion 23 and the retaining portion 24. Therefore, in the absence of any applied force, such as... Figure 16 As shown in (B), shaft 22 protrudes outward from hole 20a in end face 20.

[0080] Furthermore, a rod-shaped stop 19 is positioned near the center of the shaft 22. This stop 19 is supported by a fulcrum 26 fixed to the central portion 3b, allowing it to rotate. Below the stop 19, a fastening portion 27 for a tension spring 28 is positioned. The tension spring 28 is installed between the fastening portion 27 and the lower extension 31 of the stop 19, stretching the lower extension 31. The right end of the shaft 22 can abut near the center of the stop 19, but... Figure 16 In state (B), since there is no force from shaft 22, the stop 19 rotates counterclockwise in the figure by means of the tension force of tension spring 28, and the end 19a of the stop 19 protrudes from the gap 30 in the wall of the central part 3b, thus preventing the movement of the distributor 4.

[0081] In contrast, such as Figure 16 As shown in (A), with the left and right ends 3a folded, the end faces 21 of the left and right ends 3a push the left end of the shaft 22 in, so the right end of the shaft 22 pushes the center of the stop 19 in the right direction. As a result, the end 19a of the stop 19 rotates clockwise and retracts inward from the gap 30, so as not to prevent the movement of the distributor 4.

[0082] In this way, with the stop 19 protruding, even if the distributor 4 moves over, it will be stopped there to prevent it from falling.

[0083] In addition, such as Figure 16 As shown, the outer edge 30a of the gap 30 is positioned to abut against the stop 19 when the stop 19 protrudes perpendicularly relative to the surface of the guide rail 3. Therefore, even if the distributor 4 is to fall outwards, the stop 19, which is in contact with the distributor 4, will abut against the outer edge of the gap 30 and will not move further physically outwards, thus ensuring safety.

[0084] In addition, regardless of whether the distributor 4 is powered on or not, for safety in case of emergency, it is preferable that the aforementioned stop mechanism exists on both the left and right sides.

[0085] The operation of the rice transplanter according to this embodiment will be described below.

[0086] During trial delivery or operation, such as Figure 29 As shown, the spreader 4 moves from right to left regardless of its starting position, and finally stops at the center of the seedling platform 2.

[0087] In contrast, when organizing, such as Figure 30 As shown, the spreader 4 is moved from right to left, finally stopping at a position offset from the center. That is, the spreader 4 stops at a position where the support pillar 6 is not erected. This is because the guide rail 3, surrounded by the decorative component 3c, rotates forward approximately 30 degrees during storage, as described above; therefore, it is necessary to prevent collisions with the secondary pillar 6d, etc., where the support pillar 6 is located. In this embodiment, since the support pillar 6, etc., is positioned in the center, it stops at a position offset to the right, for example, 250 mm from the center. If the support pillar 6 is not positioned in the center, it stops offset from the position of the support pillar 6 or the secondary pillar 6d opposite it.

[0088] Next, as Figure 18 As shown in (A), the connection between the outer ends 3a1 of the left and right ends 3a and the end 10a of the support frame 10 is separated. That is, it is untied by hand. Figure 4 The latch-type fastener 8 shown can then be unfastened by hand. Figure 5 , Figure 6 8. Based on this, such as... Figure 9 , Figure 10 , Figure 18 As shown in (B), the left and right ends 3a are folded and fixed to the upper surface of the central part 3b using a snap fastener 8.

[0089] Next, tilt the folded guide rail 3, surrounded by the decorative component 3c, forward, i.e., towards the seedling platform 2. Specifically, as follows... Figure 13 , Figure 14 , Figure 17 As shown, the support column 6 of the support guide rail 3 is tilted forward with the support shaft 2d as the fulcrum. However, to do this, the knob bolt 6e, which was previously fixed in this position, is loosened, allowing the arm 6c to rotate forward. At this time, the elongated hole 6c1 of the arm 6c is guided along the end 6d1 of the secondary support column 6d erected on the seedling platform 2.

[0090] Then, upon reaching the rear end of the elongated hole 6c1, retighten the knob bolt 6e to secure the support column 6 at that position. That is, the guide rail 3, surrounded by the decorative component 3c, is fixed in the forward-tilting position.

[0091] Next, as Figure 21 , Figure 23 , Figure 24As shown, the support frames 10 located on the left and right sides are opened outwards. That is, firstly, resisting... Figure 26 The spring 14 shown can be lifted by hand. Figure 20 The rod component (edge) 10b. Thus, as... Figure 22 As shown, the protrusion formed on the lower surface of the tab 10b2 at the lower end 10b1 of the rod member 10b disengages from the hole 12a2 on the outside of the guide plate 12 fixed to the seedling platform 2. With the rod member 10b raised in this state, the support frame 10 is opened outward. When the protrusion reaches the hole 12a1 on the inside of the guide plate 12, the rod member 10b is released, and the protrusion is inserted into the hole 12a1 by means of the force of the spring 14.

[0092] Therefore, the support frame 10 is in the open state, that is, it is located on the same plane as the left and right sides 2a of the seedling platform 2. As described below, when the left and right sides 2a are folded, the possibility of interference with the guide rail 3 surrounded by the decorative component 3c can be eliminated.

[0093] Furthermore, when the support frame 10 is opened in this way, the aforementioned outer hole 12a2 is emptied, therefore, as Figure 25 As shown, the lower end of the unused pilot rod 15 is inserted into the hole 12a2 as a temporary storage location. During operation, the pilot rod 15 is returned to its original position, leaving the hole 12a2 empty for closing the support frame 10.

[0094] Next, as Figure 27 , Figure 28 As shown, the left and right sides 2a of the seedling platform 2 are folded towards the central side 2b with the axis 16a of the folding frame 16 as the support (refer to...). Figure 12 , Figure 13 , Figure 14 At this time, such as Figure 2 , Figure 28 As shown, the ends (male) of the limiting rods (limiting components) 17 erected on the left and right sides 2a abut against the ends (female) of the receiving rods 18 erected on the central side 2b, ensuring spacing. Specifically, the folding shaft frame 16 can remain at 175 degrees instead of opening 180 degrees. This prevents interference between the left and right sides 2a and the guide rails 3 surrounded by the decorative components 3c, which are folded first. This allows for safe storage.

[0095] In addition, conventionally, when the spreader 4 is located at the center of the vehicle body, the balancing movement is performed as an action to ensure the levelness of the seedling platform 2. However, as mentioned above, since the storage position is off-center, it is preferable to perform the balancing movement after the seedling platform 2 is moved to start spreading and arrives at the center of the vehicle body.

[0096] Furthermore, in the above embodiments, as shown in the figures, there are three groups of supporting pillars 6, arms 6c, secondary pillars 6d, etc., arranged in the center and on the left and right, but it is not limited to this, and there may be two or more groups.

[0097] Industrial availability

[0098] This invention relates to a rice transplanter equipped with a seedling platform for planting seedlings, which can prevent the seedling platform from extending backward when folded, and is therefore most suitable for rice transplanters.

Claims

1. A rice transplanter, characterized in that, The rice transplanter has the following features: The seedling platform (2), which is installed at the rear of the vehicle body (1), can be moved and folded towards the central side by either or both of its left and right sides; and A pesticide dispensing device (5) has a guide rail (3) and a dispensing machine for applying pesticide. The guide rail (3) is arranged along the seedling platform (2) in the left-right direction, and the dispensing machine moves left and right on the guide rail (3). The left and right ends of the guide rail (3) can be moved towards the center of the guide rail (3) and folded. The central part of the guide rail (3) is supported by a support column (6), which is erected on the seedling platform (2) in a manner that allows it to move in the forward and backward directions. When folding the seedling platform (2), first fold either or both of the left and right ends of the guide rail (3), and then fold the seedling platform (2) after moving the support column (6) forward compared to its normal posture, so that the folded guide rail (3) is sandwiched between either or both of the left and right sides of the folded seedling platform (2) and the central side of the seedling platform (2).

2. The rice transplanter according to claim 1, wherein, The rice transplanter is equipped with a limiting component (17) that restricts the movement of the seedling platform (2) towards the central side when either or both sides of the left or right side are folded, so that the seedling platform (2) does not come into contact with the guide rail (3) and its accessories.

3. The rice transplanter according to claim 2, characterized in that, The seedling platform (2) that can be moved and folded by either or both of the left and right sides is a structure that moves toward the central side by a moving mechanism, based on the moving angle of the moving mechanism being more than 90 degrees and less than 180 degrees.

4. The rice transplanter according to any one of claims 1 to 3, wherein, The left and right ends of the guide rail (3) are detachably supported by the support frame (10), which is movably erected on either or both sides of the left and right sides of the seedling platform (2) to be folded. When the guide rail (3) is folded, the support frame (10) separates from either or both of the left and right ends of the guide rail (3), and then the support frame (10) moves in a way that it retracts from the erected state, and then either of the left and right sides of the seedling platform.

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