JP5736724B2 - Seedling transplanter - Google Patents

Description

  The present invention relates to the field of seedling transplanting machines provided with a spare seedling stage for placing supplementary seedlings.

  Such a seedling transplanter is disclosed in Patent Document 1, for example. In this document, a plurality of spare seedling platforms on which replenishment seedlings are placed are rotatably connected by a link mechanism, and the operator arranges a plurality of preliminary seedling platforms in a line in front and back according to the work situation. It is used by switching between the “deployed state” and the “stored state” arranged in multiple stages.

JP 2009-232809 A

  In the prior art document, it is necessary to manually switch between the “deployed state” and the “stored state” of the spare seedling stage, and it is necessary for the operator to spend labor. Further, other work must be interrupted during the switching work, and the work efficiency is reduced.

  The present invention has been made to solve the above-described problems, and enables the operator to switch between the “expanded state” and the “stored state” without spending labor. An object of the present invention is to provide a seedling transplanter that can improve the work efficiency without interrupting the work.

In the seedling transplanting machine according to the first aspect of the present invention, a seedling planting part (4) is provided at the rear part of the traveling vehicle body (2) traveling in the field so as to be movable up and down, and a reserve is provided at the front part of the traveling vehicle body (2). A plurality of spare seedling placement members (38a, 38b, 38c) for loading the seedlings and a link mechanism (39a, 39b, 39c) for rotatably connecting the plurality of preliminary seedling placement members (38a, 38b, 38c) And when the link mechanism (39a, 39b, 39c) is operated, the plurality of spare seedling placement members (38a, 38b, 38c) can be switched between an unfolded state in which they are arranged in a line in the front and rear direction and a stowed state in which they are lined up in multiple stages. In the seedling transplanting machine provided with the seedling frame (38), a switching device (300) for switching the preliminary seedling frame (38) to the deployed form or the storage form is provided, and the rotation shaft of the link mechanism (39a, 39b, 39c) Mounting support (ax1, ax2) (49p1, 49p2), the switching device (300) includes a rotating member (300g) for rotating the link mechanism (39a, 39b, 39c) about the rotating shaft (ax1, ax2), a switch actuator (300 meters) for rotating the the pivoting member (300 g), is composed of a stop position adjusting member for stopping said switching actuators (300 meters) at any position.

Furthermore, rear side protrusions (38a-R, 38b-R, 38c-R) are respectively formed on the rear side of the preliminary seedling mounting members (38a, 38b, 38c) and in the left and right central portions, and the preliminary seedling mounting members Front protrusions (38a-F, 38b-F, 38c-F) are formed on the front side and the left and right sides of (38a, 38b, 38c), respectively, and the left and right front protrusions (38a-F, 38b-F, 38c-F), receiving members (38a-S, 38b-S, 38c-S) for receiving the rear protrusions (38a-R, 38b-R, 38c-R) are provided between the left and right sides of 38c-F). To do.

In addition to the feature of claim 1, the seedling transplanter according to the invention of claim 2 is characterized in that the preliminary seedling placement member (38a) positioned in the foremost position in the deployed state and the last position in the deployed state A seedling detection member (431-1, 431-6) for detecting whether or not a seedling is loaded on the preliminary seedling mounting member (38a, 38c) is provided at the rear of the preliminary seedling mounting member (38c). When the detection members (431-1, 431-6) detect the loading of seedlings, the control device (400) allows the operation of the switching actuator (300m).

In addition to the feature of claim 1, the seedling transplanting device (4) according to the invention of claim 3 is characterized in that the seedling planting part (4) is a seedling tank (51t,. ) Are arranged side by side in the left-right direction, and the seedling tank (51t,...) At the outer end of the seedling planting part (4) is configured to be rotatable inward in the left-right direction. A seedling tank detection member (432) for detecting whether or not the seedling tank (51t,...) Is in a working state located at the outer end of the seedling planting part (4) is provided. 432) is characterized in that the control device (400) allows the operation of the switching actuator (300m) when the working state is detected.

In addition to the features of claim 1, the seedling transplanting machine according to the invention described in claim 4 includes a pair of left and right drawing members (184) for drawing the course of the traveling vehicle body (2) in the next stroke to the field. A support member is provided on the seedling planting portion (4) so as to be able to stand and fall on the attaching portion (4) and support the standing drawing member (184) in a stored state, and the drawing member (184) is the supporting member. The storage detection member (434) for detecting whether or not the storage state is present is provided, and when the storage detection member (434) detects the storage state, the control device (400) is configured to switch the switching actuator (300m). ), The operation is restricted.

As described above, according to the first aspect of the present invention, when the switching device (300) is operated, the preliminary seedling frame (38) can be automatically switched between the deployed state and the stored state. There is no need to manually switch the reserve seedling frame (38), and the effect of improving work efficiency can be obtained.
Further, the switching actuator (300m) rotates the rotating member (300g) to switch the preliminary seedling frame (38) between the expanded state and the stored state, so that the operator manually operates the preliminary seedling frame (38). There is no need to perform switching, and the effect of improving work efficiency can be obtained.
Then, since the operation of the switching actuator (300 m) can be stopped at an arbitrary position, the preliminary seedling frame (38) is stopped in the middle of switching between the deployed state and the storage state, and the end of the preliminary seedling frame is at the end of the field. By deploying the preliminary seedling frame (38) to such an extent that it does not hit, it is possible to easily load the seedling while preventing the preliminary seedling frame (38) from being damaged.

In addition , according to the first aspect of the present invention, when the preliminary seedling frame (38) is switched to the unfolded configuration, the rear protruding portion (38a-R, 38a, 38b, 38c) of the front preliminary seedling mounting member (38a, 38b, 38c) 38b-R, 38c-R) when the left and right front protrusions (38a-F, 38b-F, 38c-F) provided on the rear spare seedling mounting members (38a, 38b, 38c) receive (38a-S, 38b-S, 38c-S), so that it is possible to prevent the preliminary seedling placement member (38a, 38b, 38c) from being lowered too much, and the preliminary seedling placement member (38a, 38b, 38c). Improves the efficiency of loading seedlings.

According to the invention described in claim 2 , in addition to the effect of the invention described in claim 1, when the two seedling detection members (431-1, 431-6) detect the loading of seedlings, the control is performed. Since the device (400) is configured to allow the operation of the switching actuator (300m), it is possible to prevent the spare seedling frame (38) from being switched to the storage state by mistake during the seedling loading operation. The effect that loading work can be performed efficiently is obtained.
The switching actuator (300m) does not operate when the seedlings are loaded on the preliminary seedling placement members (38a, 38c) in a posture that protrudes so much that they are not detected by the seedling detection members (431-1, 431-6). Therefore, it is possible to prevent the seedling from falling during the switching operation, and an operation of picking up the dropped seedling becomes unnecessary, and the work efficiency can be improved.

According to the invention described in claim 3 , in addition to the effect of the invention described in claim 1, the seedling tank detection member (432) indicates that the seedling tank (51t,...) At the outer end is in a non-working state. Is detected, the control device (400) regulates the operation of the switching actuator (300m), so that when the machine is transported to the work place or stored in a warehouse or the like, the spare seedling frame (38) is erroneously operated. ) Can be prevented from switching to the unfolded state, so that the effect of preventing the spare seedling frame (38) from being damaged by contact with surrounding objects or from damage to the surrounding objects can be obtained.

According to the fourth aspect of the present invention, in addition to the effect of the invention according to 請 Motomeko 1, when the drawing member (184) has detected that the closing sensing member (434) that is housed state, The control device (400) regulates the operation of the switching actuator (300m), so that when the machine is transported to the work place or stored in the warehouse, the spare seedling frame (38) is set to the "deployed state" by mistake. Therefore, it is possible to prevent the spare seedling frame (38) from being damaged by being in contact with surrounding objects, or from being damaged.

It is a side view of the riding type rice transplanter of the Example of this invention. It is a top view of the riding type rice transplanter of FIG. It is a side view at the time of arrange | positioning the preliminary seedling mounting stand of the riding type rice transplanter of FIG. It is a side view at the time of arrange | positioning the preliminary seedling mounting stand of the riding type rice transplanter of FIG. 1 on the same plane. It is a top view of the preliminary seedling mounting part of FIG. It is the front view seen from the body front at the time of arrange | positioning the preliminary seedling mounting stand of the riding type rice transplanter of FIG. 1 is a side view (FIG. 7 (a)) and a front view (FIG. 7 (b)) viewed from the front of the machine body when arranged on the upper and lower three stages of the spare seedling mounting stage of the riding type rice transplanter of FIG. is there. It is a partial side view of the riding type rice transplanter provided with the electric spare seedling stage of the embodiment of the present invention. It is a side view of the electrically-driven preliminary seedling mounting stand of the Example of this invention. It is the (a) front view, (b) top view, (c) back view, and (d) side view of the 1st, 2nd, and 3rd reserve seedling stand. It is a top view when a preliminary seedling stage is set to the “deployed state”. It is a side view of a preliminary seedling stage when first, second and third preliminary seedling stages are arranged in a substantially straight line. It is a side view of a reserve seedling stand when pushing a seedling box from the front and moving it backward. It is (a) a block diagram for explaining an example of an operation restriction according to the presence or absence of seedling loading, (b) a flow chart, and (c) a layout drawing of a preliminary seedling stand switch. It is side part sectional drawing of a seedling stand lower part. It is A arrow directional view in FIG. It is a side view of the seedling mounting stand which shows the state which folded the seedling mounting part of the right-and-left outer end part. FIG. 17 shows a part of FIG. It is sectional drawing of the upper connection part of the seedling mounting part of a center part, and the seedling mounting part of the left-right outer part. It is sectional drawing of the lower connection part of the seedling mounting part of a center part, and the seedling mounting part of the left-right outer part. It is a front view of the principal part of a seedling stand support frame. It is (a) block diagram and (b) flowchart for demonstrating an example of the operation | movement restriction | limiting according to a seedling tank folding state. It is the (a) block diagram and (b) flowchart for demonstrating an example of the operation | movement restriction | limiting according to a blower folding state. It is a side view which shows a line drawing marker etc. It is a top view which shows the line drawing marker at the time of standing up. It is a figure which shows rotation of a marker axis | shaft. It is the (a) block diagram and (b) flowchart for demonstrating an example of the operation | movement restriction | limiting according to the "storage state" of a drawing marker. It is the (a) side view and (b) top view which show the fixed hook for drawing marker accommodation. It is the (a) block diagram for demonstrating an example of the illumination control of a preliminary seedling stand, (b) a flowchart, and (c) Operation explanatory drawing of a preliminary seedling stand. It is a top view which shows the empty box case of a reserve seedling stand.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 and FIG. 2 are a side view and a plan view of a riding type rice transplanter equipped with a fertilizer application device as a granular material feeding device which is a typical example of the seedling transplanter of the present invention. In this riding type rice transplanter 1 with a fertilizer application, a seedling planting portion 4 is mounted on the rear side of the traveling vehicle body 2 via an elevating link device 3 so that the seedling planting portion 4 can be moved up and down. Is provided. The boarding operator refers to the left and right directions in the forward direction of the seedling transplanter as left and right, respectively, and the forward and backward directions are referred to as forward and backward, respectively.

  The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and 10 and a pair of left and right rear wheels 11 and 11 as drive wheels, and a transmission case 12 is disposed at the front of the fuselage. Front wheel final cases 13, 13 are provided on the left and right sides of the case 12, and the left and right front wheels are mounted on the left and right front wheel axles projecting outward from the respective front wheel support portions capable of changing the steering direction of the left and right front wheel final cases 13, 13. 10 and 10 are respectively attached. Further, the front end portion of the main frame 15 is fixed to the rear portion of the transmission case 12, and a rear wheel gear case 18, with a rear wheel rolling shaft provided horizontally in the front and rear sides at the rear left and right center of the main frame 15 as a fulcrum. The rear wheels 11 and 11 are attached to a rear wheel axle that is supported in a freely rolling manner and projects outwardly from the rear wheel gear cases 18 and 18.

  The engine 20 is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the transmission case 12 via the belt transmission device 21 and the HST 23. The rotational power transmitted to the mission case 12 is shifted by a transmission in the case 12 and then separated into traveling power and external power to be extracted. A part of the traveling power is transmitted to the front wheel final cases 13 and 13 to drive the front wheels 10 and 10, and the rest is transmitted to the rear wheel gear cases 18 and 18 to drive the rear wheels 11 and 11. Further, the external take-out power is transmitted to a planting clutch case 25 provided at the rear part of the traveling vehicle body 2, and then transmitted to the seedling planting unit 4 by the planting transmission shaft 26, and also the fertilizer application device 5 by the fertilization transmission mechanism 28. Is transmitted to.

  The upper part of the engine 20 is covered with an engine cover 30, and a seat 31 is installed thereon. A front cover 32 incorporating various operation mechanisms is provided in front of the seat 31, and a handle 34 for steering the front wheels 10 and 10 is provided above the front cover 32. The engine cover 30 and the front cover 32 have horizontal floor steps 35 on the left and right sides of the lower end. The floor step 35 is partly grid-shaped (see FIG. 2), and mud on the shoe of the worker walking through the step 35 falls on the field. The rear part on the floor step 35 is a rear step 36 that also serves as a rear wheel fender.

  The elevating link device 3 has a parallel link configuration, and includes one upper link 40 and a pair of left and right lower links 41, 41. These links 40, 41, 41 are pivotally attached to a rear-view portal-shaped link base frame 42 erected on the rear end of the main frame 15, and a vertical link 43 is connected to the tip side thereof. ing. And the connecting shaft 44 rotatably supported by the seedling planting part 4 is inserted and connected to the lower end part of the vertical link 43, and the seedling planting part 4 is connected so as to be able to roll around the connecting shaft 44. An elevating hydraulic cylinder 46 is provided between a support member fixed to the main frame 15 and a tip of a swing arm (not shown) integrally formed with the upper link 40, and the cylinder 46 is expanded and contracted by hydraulic pressure. The upper link 40 pivots up and down, and the seedling planting part 4 moves up and down while maintaining a substantially constant posture.

  The seedling planting section 4 has a six-row planting structure, a transmission case 50 that also serves as a frame, a mat seedling, and a left and right reciprocating motion to supply seedlings to the seedling outlet 51a of each row one by one. When all the seedlings are supplied to the seedling outlet 51a, the seedling feed belt 51b is used to transfer the seedlings downward by a seedling feeding belt 51b, and the seedling planting is carried out in the field. Attaching device 52,... Includes a pair of left and right drawing markers 184 for drawing the aircraft path in the next stroke to the topsoil surface. In the lower part of the seedling planting part 4, a center float 55 is provided in the center, and side floats 56, 56 are provided on the left and right sides thereof. When the aircraft is advanced with these floats 55, 56, 56 in contact with the mud surface of the field, the floats 55, 56, 56 slide while leveling the mud surface, and the seedling planting device 52, Seedlings are planted by ... Each of the floats 55, 56, and 56 is rotatably mounted so that the front end side moves up and down in accordance with the unevenness of the field topsoil surface, and the vertical movement of the front part of the center float 55 is an angle-of-attack control sensor during planting work. The planting depth of the seedling is always kept constant by switching the hydraulic valve that controls the lifting hydraulic cylinder 46 according to the detection result to raise and lower the seedling planting unit 4 according to the detection result. .

  The fertilizer applicator 5 feeds the granular fertilizer stored in the fertilizer hopper 60 by a certain amount by the feeding portions 61,... And applies the fertilizer to the left and right sides of the floats 55, 56, 56 with the fertilizer hoses 62,. Guides (not shown), guided to the fertilizer guide, ... Grooves (not shown) provided on the front side of the fertilizer guide, ... are dropped into the fertilization structure formed near the side of the seedling planting strip. ing. Air generated by the blower 58 driven by the blower electric motor 53 is blown into the fertilizer hose 62 through the air chamber 59 that is long in the left-right direction, and the fertilizer in the fertilizer hose 62 is forced by the wind pressure. It is designed to be transported.

  The seedling planting unit 4 is provided with a rotor 27 (an example of a combination of the first rotor 27a and the second rotor 27b may be simply referred to as the rotor 27) as an example of a leveling device. In addition, the seedling mount 51 is configured to slide in the left-right direction using a support roller 65a of a rectangular support frame 65 having a full width in the left-right direction and the vertical direction that supports the entire seedling planting unit 4 as a rail.

  In addition, a pair of preliminary seedling platforms 38, 38 on which replenishment seedlings are placed are centered around a rotating shaft 49a (see FIGS. 4 and 5) extending vertically in the front left and right sides of the traveling vehicle body 2. Are provided so as to be pivotable between a position projecting laterally from the body and a position housed inside.

  FIG. 3 shows a side view when the first preliminary seedling stage 38a, the second preliminary seedling stage 38b, and the third preliminary seedling stage 38c on one side of the machine body are arranged in three upper and lower stages. FIG. 4 shows a side view when the stage 38a, the second preliminary seedling stage 38b, and the third preliminary seedling stage 38c are arranged on the same plane, and the first preliminary seedling stage 38a and the second preliminary seedling stage 38b. FIG. 5 shows a plan view when the third preliminary seedling stage 38c is arranged on the same plane, and the first preliminary seedling stage 38a, the second preliminary seedling stage 38b, and the third preliminary seedling stage 38c are arranged in front of the body. FIG. 6 shows a front view as seen from above.

  Each of the preliminary seedling stage 38 is composed of an inclined support member and is arranged in three stages, and includes a first preliminary seedling stage 38a, a second preliminary seedling stage 38b, and a third preliminary seedling stage 38c. The central side surface of the uppermost first preliminary seedling stage 38a and the foremost side surface of the second preliminary seedling stage 38b are rotatable around the rotation shafts 38a1 and 38b1, respectively, at both ends of the first moving link member 39a. The rearmost side surface of the uppermost first preliminary seedling stage 38a and the frontmost side surface of the lowermost preliminary seedling stage 38c are respectively supported at both ends of the second moving link member 39b around the rotation shafts 38a2 and 38c1. And the central side surface of the second preliminary seedling stage 38b is supported by the central part of the second moving link member 39b so as to be rotatable around the rotary shaft 38b2. The rear side surface of the seedling stage 38b and the central side surface of the lowermost third preliminary seedling stage 38c are supported at both ends of the third moving link member 39c so as to be rotatable around the rotary shafts 38b3 and 38c2, respectively. ing.

  The second preliminary seedling stage 38b is fixed to the body, and the first preliminary seedling stage 38a and the third preliminary seedling stage 38c are arranged above and below the second preliminary seedling stage 38b, and as a whole. The first preliminary seedling stage 38a and the third preliminary seedling stage 38c are respectively arranged before and after the state arranged in the upper and lower three stages and the second preliminary seedling stage 38b, and the first moving link member as a whole. 39a, the second moving link member 39b, and the third moving link member 39c can be rearranged on substantially the same plane. That is, since the center part of the second moving link member 39b is supported by the rotation fulcrums provided on both sides of the center part of the second preliminary seedling stage 38b, the second moving link member 39b is rotated. The first and third preliminary seedling platforms 38a and 38c are moved forward and backward of the second preliminary seedling platform 38b, and the first, second and third preliminary seedling platforms 38a, 38b and 38c are on the same plane. A wide seedling tray mounting plane can be obtained by arranging in the above.

  The first moving link member 39a is connected to the front end portion of the second preliminary seedling stage 38b, the second moving link member 39b is connected to the rear end side of the first preliminary seedling stage 38a, The connecting part side on the front end side of the third preliminary seedling stage 38c of the second moving link member 39b and the connecting part side on the rear end part side of the second preliminary seedling stage 38b of the third moving link member 39c are respectively first. Short first, second, and third auxiliary members bent at right angles to the longitudinal direction of the moving link member 39a, the second moving link member 39b, and the third moving link member 39c and provided on the link members 39a, 39b, and 39c. It is rotatably connected to the first, second and third preliminary seedling platforms 38a, 38b and 38c via links 45a, 45b and 45c. In addition, first, second, and third partition plates 48a, 48b, and 48c for preventing the seedling tray from falling are disposed on the left and right side surfaces of the first, second, and third preliminary seedling platforms 38a, 38b, and 38c. .

Further , when the first, second, and third preliminary seedling platforms 38a, 38b, and 38c are arranged on the same plane (FIG. 4), the front side of the first preliminary seedling platform 38a that is positioned at the foremost part Since the first stopper 47a and the sixth stopper 47f that have risen upward from the respective planes are raised on the rear side of the third preliminary seedling stand 38c located at the rearmost portion, the first, second, and third preliminary stands When the seedling platforms 38a, 38b, and 38c are arranged side by side on the same plane, the seedling trays mounted on the first, second, and third preliminary seedling platforms 38a, 38b, and 38c do not slide down.

Moreover , the short 1st auxiliary | assistant link 45a in the connection part with the front-end part of the 2nd reserve seedling stand 38b of the 1st movement link member 39a, and the rear end of the 1st reserve seedling stand 38a of the 2nd movement link member 39b A short second auxiliary link 45b in the connection part with the part, a short third auxiliary link 45c in the connection part between the front end of the third preliminary seedling stage 38c of the second movement link member 39b, and a third movement link Third, second, fourth, and fifth stoppers 47c, 47b, 47d, and 47e are provided on the short fourth auxiliary link 45d at the connecting portion of the member 39c to the rear end of the third preliminary seedling table 38c. It has been.

The third, second, fourth, fifth stopper 47c, 47b, 47d, 47e, the first pair respectively, the second, third auxiliary link 45a, 45b, 45 c, is fixed integrally with 45d When the first, second, and third preliminary seedling platforms 38a, 38b, and 38c are arranged in three upper and lower stages, the first, second, third, fourth, fifth, and sixth stoppers 47a, 47b, Since all of 47c, 47d, 47e, and 47f stand up as shown in FIG. 3, the seedling tray is prevented from slipping off from the stoppers 47a, 47b, 47c, 47d, 47e, and 47f.

  As shown in FIG. 4, when the first, second, and third preliminary seedling platforms 38a, 38b, and 38c are arranged side by side on the same plane, the second and fifth stoppers 47b and 47e are provided in the first, second, Since the first and sixth stoppers 47a and 47f are raised from the upper plane of the third spare seedling stage 38a, 38b and 38c, the seedling tray is provided with the first, second and third preliminary seedling stages. 38a, 38b, and 38c can be placed on the same plane without any obstacles, and the first and sixth stoppers 47a and 47f do not slide down.

  Further, as shown in FIG. 6, the first, second, and third moving link members 39a, 39b, and 39c are arranged inside the support member 49 to the machine body, and therefore, the three-stage reserve seedling stage 38a in the upper and lower stages. , 38b, 38c are rearranged in one step on the same plane, the first, second, third, etc., in which the operator or the like operates in the process of rotating the first, second, third moving link members 39a, 39b, 39c. There is no possibility of being caught in the third moving link members 39a, 39b, 39c and the like.

  In addition, the first, second, and third preliminary seedling platforms 38a, 38b, and 38c can be moved by performing an operation of rotating the first, second, and third moving link members 39a, 39b, and 39c with one touch. , It can be rearranged in one step in the same plane as the state of being arranged in the upper and lower three steps.

  The change in the number of stages of the first, second, and third preliminary seedling platforms 38a, 38b, and 38c is switched depending on the work (including field conditions) form. For example, the first, second, and third preliminary seedling platforms 38a, 38b, and 38c are arranged on the same plane when a seedling tray or the like is replenished, and are arranged in three upper and lower stages during seedling planting work. When the field conditions are, for example, high salmon and the first, second, and third preliminary seedling platforms 38a, 38b, and 38c cannot be expanded outward or forward of the machine body, a plurality of upper and lower stages are provided. When there is no hindrance to deploy the third preliminary seedling stage 38a, 38b, 38c outward or forward of the machine body, the first, second, and third preliminary seedling stage 38a, 38b, 38c are deployed to make one stage. .

  In addition, the switching of the first, second, and third preliminary seedling mounting bases 38a, 38b, and 38c, which are composed of three stages on the upper and lower sides, to the front and back, can be performed while the seedling tray is mounted.

  In addition, two first and second preliminary seedling platforms 38a, 38b are used in place of the three first, second, and third preliminary seedling platforms 38a, 38b, and 38c, and are arranged in two vertical stages or on the same plane. Other configurations may be adopted.

  When using the spare seedling stage 38a, 38b, 38c and when using the preliminary seedling stage 38a, 38b, the first, second, and third movements are used when rearranging the upper and lower three stages, the upper and lower stages, or the same plane. The link members 39a, 39b, 39c or the first and second moving link members 39a, 39b have a configuration in which the first preliminary seedling stage 38a is arranged in front of the machine body, or a configuration in which the first preliminary seedling board table 38a is arranged in the rear of the machine body. Either of these is acceptable.

  When the first, second, and third preliminary seedling platforms 38a, 38b, and 38c or the first and second preliminary seedling platforms 38a and 38b are used, they are arranged in three upper and lower stages, two upper and lower stages, or on the same plane. The operation of the first, second, third moving link members 39a, 39b, 39c or the first, second moving link members 39a, 39b may be performed by an electric motor (not shown). At this time, if the operation switch of the electric motor is provided at two places on the assistant side, which is in a different place around the seedling transplanter, the operator side and the operator have good workability.

  The first, second, and third preliminary seedling platforms 38a, 38b, and 38c or the first and second preliminary seedling platforms 38a and 38b are arranged around the rotation shaft 49a (FIGS. 4 and 5) of the support member 49. By rotating around a virtual rotation axis in the vertical direction, the structure can be rotated in the vertical direction both inside and outside the aircraft. Thus, the first, second, and third preliminary seedling platforms 38a, 38b, and 38c or the first and second preliminary seedling platforms 38a and 38b can be brought close to each other.

  Further, as shown in the side view of FIG. 7A and the front view of FIG. 7B, the first, second, and third preliminary seedling platforms 38a, 38b, and 38c, or the first and second preliminary seedling platforms. When the bases 38a and 38b are used, the first, second and third preliminary seedling mounting bases 38a, 38b and 38c or the first and second preliminary seedling mounting bases 38a and 38b are rotated. The movement lock lever 73b can be rotated in the front-rear direction in accordance with the rotation direction of the first, second, third preliminary seedling stage 38a, 38b, 38c or the first, second preliminary seedling stage 38a, 38b. it can.

  By operating the rotation lock lever 73b, the rotation lock plate 73a can be operated simultaneously with the rotation of the first, second, and third preliminary seedling platforms 38a, 38b, 38c or the preliminary seedling platforms 38a, 38b. Therefore, it is not necessary to perform the switching operation many times, and the work efficiency is improved. At this time, the seedling frame rotation lock lever 73b was provided at the position of the rotation lock pin 73c of the support member 49 of the preliminary seedling mounting bases 38a to 38c or the preliminary seedling mounting bases 38a and 38b. At this time, by setting the seedling frame rotation lock lever 73b in a locked state so as to extend to the front side (the cocoon side), the rotation lock lever 73b can be performed from either the cocoon side or the rice transplanter side. The support member 49 and the spare seedling stage 38b are connected by a reinforcing plate 73e.

  The rotation lock plate 73a rotates integrally with the intermediate shaft 38b1 that rotates together with the link 39b at the center of the moving link 39b. The rotation lock lever 73b is attached to the support member 49 so as to be capable of rotating back and forth. The rotation lock pin 73c is attached to the support member 49 so as to freely advance and retract, and is connected to the rotation lock lever 73b via a cable 73d. The rotation lock plate 73a has a hole for receiving the rotation lock pin 73c. The rotation lock pin 73c enters the hole of the rotation lock plate 73a and regulates the rotation of the rotation lock plate 73a in a state where the preliminary seedling platforms 38a, 38b, 38c are arranged in a plurality of stages.

<Electric power nursery stand>
As described above, in the spare seedling stage 38 as a spare seedling frame, the link mechanism can be operated by an electric motor. A configuration example of the spare seedling stage 38 at this time is shown in FIGS. Here, a “reserved state” in which a first spare seedling stage 38a, a second preliminary seedling stage 38b, and a third preliminary seedling stage 38c, which are a plurality of spare seedling placement members for loading spare seedlings, are arranged in three upper and lower stages. ”Spare seedling stage 38, the first preliminary seedling stage 38 a, the second preliminary seedling stage 38 b, and the third preliminary seedling stage 38 c arranged in a single row on the front and back in the same plane. 38 are superimposed on each other.

  The rotation axes ax1 and ax2 of the first, second and third preliminary seedling platforms 38a, 38b and 38c are respectively supported by mounting columns 49p1 and 49p2 on the support frame 49 provided on the front side of the traveling vehicle body 2. Yes. The electric spare seedling table 38 has a switching motor 300m as a switching actuator that generates a driving force by rotating forward / reversely, and when the driving force is applied from the switching motor 300m, the rotation is about the rotation axis ax1. A switching device 300 is provided that includes a rotation gear 300g as a rotation member that rotates the two-moving link member 39b.

  When the operator operates the switching motor 300m, the driving force of the switching motor 300m is transmitted to the rotation gear 300g and the second moving link member 39b rotates about the rotation axis ax1, and accordingly, the preliminary seedling is mounted. The “deployed state” and “stored state” of the table 38 are automatically switched. When the switching motor 300m of the switching device 300 is operated, the driving force is transmitted to the rotating gear 300g and the spare seedling stage 38 can be automatically switched between the “deployed state” and the “storing state”. There is no need to manually switch the spare seedling stage 38, and the work efficiency is improved.

  Although not shown, an adjustment dial is provided as a stop position adjustment member that can arbitrarily specify the position where the switching motor 300m stops its operation within a range of 0 to 100%. Since the operation of the switching motor 300m is stopped at the designated position, the operation of the switching motor 300m can be stopped at an arbitrary position by the adjustment dial. Breakage of the preliminary seedling stage 38 by stopping it in the “stored state” and setting the preliminary seedling stage 38 to the “deployed state” so that the end of the preliminary seedling stage 38 does not hit the end of the field. It is also possible to facilitate the loading of seedlings while preventing this.

<Shape of the first to third preliminary seedling mounts>
Next, the shapes of the first, second, and third preliminary seedling platforms 38a, 38b, and 38c shown in FIGS. 8 and 9 will be described. As shown in FIG. 10, the shapes of the first, second and third preliminary seedling platforms 38a, 38b and 38c have the following features (1) to (7).

(1) Front projections 38a-F, 38b-F, 38c-F projecting forward are formed at the front end portions of the first, second, and third preliminary seedling platforms 38a, 38b, 38c.
(2) Rear projecting portions 38a-R, 38b-R, 38c-R projecting rearward are formed at the rear end portions of the first, second, and third preliminary seedling platforms 38a, 38b, 38c. .
(3) When the preliminary seedling stage 38 is switched to the “deployed state”, the rear projections 38a-R and 38b-R on the first and second preliminary seedling stages 38a and 38b located on the front side of the machine body The structure which overlaps with front side protrusion part 38b-F and 38c-F of the 2nd, 3rd preliminary seedling mounting bases 38b and 38c located in a side view.
(4) After the first and second preliminary seedling platforms 38a and 38b on the front side, between the left and right of the front protrusions 38b-F and 38c-F and on the bottoms of the second and third preliminary seedling platforms 38b and 38c The receiving members 38b-S and 38c-S for receiving the side protrusions 38a-R and 38b-R are arranged.
(5) The front protrusions 38a-F, 38b-F, and 38c-F are formed in a rear-upward inclined posture.
(6) The upper surfaces of the rear portions of the front protrusions 38a-F, 38b-F, 38c-F are formed higher than the seedling mounting surfaces of the first, second, and third preliminary seedling mounting bases 38a, 38b, 38c.
(7) The rear protrusions 38a-R, 38b-R, and 38c-R are higher than the seedling mounting surfaces of the first, second, and third preliminary seedling mounting bases 38a, 38b, and 38c, and the front protrusions 38a. -F, 38b-F, 38c-F is the same as the upper surface or formed below the upper surface.

The intent of the shape is as follows.
As shown in FIG. 11, when the preliminary seedling stage 38 is set to the “deployed state”, the rear protrusions 38a-R and 38b-R on the front side first and second preliminary seedling stage 38a and 38b are located on the rear side. By receiving and receiving the receiving members 38b-S and 38c-S provided on the front projecting portions 38b-F and 38c-F of the second and third preliminary seedling platforms 38b and 38c, the first and second As shown in the side views of FIGS. 12A and 12B, the first, second and third preliminary seedling platforms 38a, 38b and 38c can be prevented from being lowered too much. They can be arranged in a substantially straight line.

  Thus, as shown in FIGS. 13A and 13B, the seedling box B can be pushed and moved backward from the front, but at this time, the front protrusions 38a-F, 38b-F, 38c-F And the rear upper surface of the front protrusions 38a-F, 38b-F, 38c-F from the seedling mounting surfaces of the first, second, and third preliminary seedling mounting bases 38a, 38b, 38c. Since the seedling box B pushed from the front side of the machine body slides on the upper surface of the front protrusions 38a-F, 38b-F, 38c-F, the first, second and third preliminary seedling platforms 38a , 38b, 38c, the seedling box B is not caught by the front protrusions 38a-F, 38b-F, 38c-F and does not move, and it is not necessary to attach a separate stopper.

  The front protrusions 38a-F, 38b-F, and 38c-F and the rear protrusions 38a-R, 38b-R, and 38c-R receive the seedling box B when the spare seedling stage 38 is "stored". Become a stopper. Further, the left and right side plates 38a-G, 38b-G, and 38c-G perform the movement restriction in the left-right direction.

<Operational restriction depending on whether or not seedlings are loaded>
As shown in FIG. 14 (a), a spare seedling stand switch 431 is provided as a seedling detection member for detecting whether or not the seedling box B is normally loaded on the first to third preliminary seedling placement stands 38a to 38c. One of the features of the present invention is that the mounting table 38 is configured. That is, as shown in FIG. 13, the seedling boxes B are sequentially stacked on the first to third preliminary seedling platforms 38a to 38c. At this time, as shown in FIGS. 14 (a) to (c), for example, If all six spare seedling stand switches 431-1 to 431-6 provided before and after the seedling placement stands 38 a to 38 c are not turned ON (NO in at least one step of steps ST 31 to ST 33), the spare seedling placement stand Even if the switching signal is transmitted from the operation switch 38 or the like, the microcomputer 400 does not accept the operation of the switching motor 300m of the switching device 300 and does not operate the electric spare seedling stage 38 (step ST34).

  As illustrated in FIG. 13, when the seedling box B is normally loaded on the first to third preliminary seedling platforms 38 a to 38 c, the seedling box B is in a position where the seedling box B does not fall or get caught between the preliminary seedling mounting bases 38. Thus, the standby seedling stage switches 431-1 to 431-6 are all pushed by the weight of the seedling box B. In this case, even if the preliminary seedling stage 38 is opened and closed, the seedling box B is prevented from falling. Can do. Thus, by providing the seedling detection member on the preliminary seedling stage 38, the microcomputer 400 can switch the acceptance of the operation of the switching motor 300m according to the presence or absence of the seedling box B loaded on the preliminary seedling stage 38. Therefore, erroneous operation of the spare seedling stage 38 is prevented.

  Here, the spare seedling stage switch 431 may be configured by the six spare seedling stage switches 431-1 to 431-6 as described above, but the first preliminary seedling located at the foremost position in the “deployed state”. It is only necessary to provide two spare seedling stage switches 431-1 and 431-6 at both ends of the front part of the stage 38 a and the rear part of the rear part of the third preliminary seedling stage 38 c positioned last in the “deployed state”. The microcomputer 400 may accept the operation of the switching motor 300m when the spare seedling stage switches 431-1 and 431-6 detect the loading of the seedling box B. Since the number of spare seedling stage switches 431 is reduced, the cost can be reduced and the control configuration of the microcomputer 400 can be simplified.

  Thereby, it is possible to prevent the spare seedling stage 38 from being placed in the “stored state” due to an erroneous operation during the loading operation of the seedling box B, so that the loading operation can be performed efficiently. In the case where the seedling box B is loaded on the preliminary seedling stage 38 in such a position that it protrudes so much that it is not detected by the preliminary seedling stage switches 431-1 and 431-6, the seedling box B has been described with reference to FIG. Such a normal stacking is not achieved, and for example, the front projecting portion 38a-F, the rear projecting portion 38c-R, and the like float from the seedling mounting surfaces of the first to third preliminary seedling mounting platforms 38a to 38c. The spare seedling stage switches 431-1 and 431-6 are not turned ON, and the microcomputer 400 does not operate the switching motor 300 m. For this reason, it can prevent that a seedling falls by mistaken operation of the preliminary seedling mounting stand 38, the operation | work which picks up the dropped seedling becomes unnecessary, and working efficiency improves.

  Now, in the seedling transplanting machine of FIG. 8 provided with the electric spare seedling placing table 38 that can be automatically switched between the “deployed state” and the “stored state” by the switching device 300, the following functions are added. Is also possible.

<Operation restriction according to seedling tank folding state>
This rice transplanter 1 is provided with various configurations for reducing the lateral width of the seedling planting unit 4 during transportation and storage. First, the structure which folds the right-and-left end part of the seedling mounting stand 51 is demonstrated (refer FIGS. 16-20).

  The partition wall 581-4 that partitions the third seedling mounting part 51-3 and the fourth seedling mounting part 51-4 from the left is divided into an inner part 581a and an outer part 581b, and the inner part 581a. Is formed integrally with the seedling mounting portions 51-4 to 51-8 in the central portion, and the outer portion 581b is formed integrally with the seedling mounting portions 51-1, 51-2, 51-3 of the left outer three stripes. Yes. This partition wall 581-4 is formed higher than the other partition walls except the partition wall 581-9. Then, a cylindrical shaft 620a, 620b,... Formed on the upper ends of both portions 581a, 581b is provided by inserting a single rotating shaft 621, and three seedlings on the left outer side are centered on the rotating shaft 621. The state where the portions 51-1, 51-2, 51-3 are inverted inwardly and the portions overlap the fourth to sixth seedling placement portions 51-4, 51-5, 51-6 from the left I want to fold it. .. Are attached to the tops of the columns 617,... Provided on the fifth to seventh partition walls 581-5, 581-6, 581-7 from the left. When the seedling placement part is folded, the tops of the columns 617,... Provided on the partition walls 581-1, 581-2, 581-3 engage with the column receivers 622,.

  The partition wall 581-9 that partitions the second seedling placement part 51-9 and the third seedling placement part 51-9 from the right is divided into an inner part 581a and an outer part 581b. The site | part 581a is integrally formed with the seedling mounting parts 51-4 to 51-8 of the center part, and the outer site | part 581b is integrally formed with the seedling mounting parts 51-9 and 51-10 of two right outer sides. The partition wall 581-9 is formed higher than the partition wall 582-4 with respect to the seedling mounting surface. Then, a cylindrical shaft 620a, 620b,... Formed on the upper ends of the two parts 581a, 581b is provided by inserting a single rotating shaft 621, and two seedlings on the right outer side are centered on the rotating shaft 621. The parts 51-9 and 51-10 are inverted inwardly, and the parts are folded so as to overlap the third and fourth seedling mounting parts 51-7 and 51-8 from the right. A concave support column 622 is fixed to the bottom surface of the leftmost partition wall 581-1, and the support column provided on the rightmost partition wall 581-11 when the seedlings on the right outer two sides are folded. The top of 617 engages with this post receiver 622. Further, the top of the support column 617 provided on the partition wall 581-8 and the top of the support column 617 provided on the partition wall 581-10 are connected by the auxiliary support column 623 to support the seedling mounting portions 51-9 and 51-10.

  Regarding the arrangement of the cylindrical portions, the cylindrical portions 620a and 620b are arranged in three upper and lower groups, and are arranged in the order of 620b, 620a, 620b, 620a, 620a, and 620b from the top. Further, there is no gap between the upper two sets of cylindrical portions 620a and 620b, but a gap S is provided in the lowermost cylindrical portions 620a and 620b. This is due to the following reason. That is, since the L-shaped main body portion 583b of the seedling receiving plate 583 has an acute angle when viewed from the side, the seedling mounting portions 51-1, 51-2, 51-3 on the left outer three rows and the seedling placement on the right outer two rows are provided. The seedlings 51-9 and 51-10 cannot be reversed at the same positions, and the seedlings are pushed up by the gap S along the inclination of the seedling stage in order to avoid interference with the L-shaped main body 583b. This is for inverting the mounting portion.

  In FIG. 19, reference numeral 582 denotes the horizontal frame. The horizontal frame is a seedling placement part 51-4 to 51-8 at the center and a seedling placement part 51-1, 51-2, 51-3 (or 51) at the left and right outer parts. −9, 51-10) in the vicinity of the boundary portion, the central portion 582A and the outer portion 582B are separated. The mounting member 588 is fixed to both left and right end portions of the central portion 582A, and the fixing member 624 is fixed to the inner end portion of the outer portion 582B so as to face the mounting member 588. The fixing member 624 has a round hole 625 penetrating left and right, and the attachment member 588 has a screw hole 626 on an extension line of the round hole 625. A fixing rod 627 having a threaded end is inserted into the round hole 625 of the fixing member 624 from the outside, and the tip threaded portion is screwed into the screw hole 626 of the mounting member 588, whereby the left and right outer side seedlings are mounted. The parts 51-1, 51-2, 51-3 (or 51-9, 51-10) are fixed to the seedling placement parts 51-4 to 51-8 in the central part. A small-diameter portion 627a is formed at an appropriate position of the fixing rod 627. When the fixing rod 627 is pulled out from the screw hole 626 when folding the seedling mounting portion on the left and right outer sides, the tip of the knock pin 628 is engaged with the small-diameter portion 627a. For this reason, the fixing rod 627 is prevented from coming off any further. Since the outer wall surface of the small diameter portion 627a is tapered, the fixing rod 627 can be pushed in. In the figure, 629 is a spring that biases the knock pin 628 toward the fixing rod 627.

  In FIG. 20, reference numeral 631 denotes a horizontal pipe provided on the upper part of the rear surface of the seedling stage. , 51-3 (or 51-9, 51-10) in the vicinity of the boundary portion 631A and the outer portion 631B. A male screw member 632 is fitted on the inner end side of the hollow portion of the central portion 631A. A fixing rod 634 having a screw hole 633 formed at the tip is inserted into the horizontal pipe 631 from the outside, and the screw hole 633 is screwed into the male screw member 632, whereby the seedling mounting parts 51-1, 51-2 and 51-3 (or 51-9 and 51-10) are fixed to the seedling mounting parts 51-4 to 51-8 in the central part. The mechanism for preventing the fixing rod 634 from falling off is similar to that of the fixing rod 627, and the knock pin 637 biased by the spring 636 is engaged with the small diameter portion 634a of the fixing rod 634.

  In the state where the right and left outer side seedling mounting portions are deployed, the center seedling vertical feeding device 601A and the left and right outer side vertical seedling vertical feeding device 601B are configured to be transmission-coupled (see FIG. 16). That is, the roller drive shaft 603aA of the center seedling vertical feed device 601A is a drive clutch body having a drive arm 607 attached to its inner end via a ratchet mechanism 608 and a clutch pawl at its outer end. 640 is integrally attached. A driven clutch body 641 attached to the outer side roller drive shaft 603aB is engaged with the drive clutch body 640. The driven clutch body 641 is fitted to the roller drive shaft 603aB on the outer side so as to rotate integrally, is slidable in the axial direction, and is urged toward the shaft end side by a spring 642. Therefore, when the clutch bodies 640 and 641 are connected, the driven clutch body 641 can escape even if both clutch claws collide with each other, so even if the phases of the clutch bodies 640 and 641 are not matched. Connected without difficulty and quickly engaged.

  As shown in FIG. 15, the seedling support frame 585 is provided with a horizontal frame 585b horizontally above the vertical frames 585a and 585a whose bases are fixed to the unit transmission portions 562-2 and 562-4. The rollers 586 and 586 support the seedling mounting portions 51-4 to 51-8 in the center at the upper ends of the vertical frames 585a and 585a. And rollers 586 and 586 for supporting the left and right outer seedling mounting portions 51-1, 51-2 and 51-3 (or 51-9 and 51-10) at the tip portions of the rotating frames 585c and 585c. Is attached.

  As shown in FIG. 21, the roller 586 that supports the right and left outer seedling mounting portions has its roller shaft 586a fitted in the roller shaft hole of the rotating frame 585c so as to be slidable in the axial direction. The spring 586b that is loosely fitted is urged in a direction away from the rotating frame 585c and is prevented from being removed by a split pin 586c that is inserted into the roller shaft 586a. A finger hook 586d is fixed to the end of the roller shaft 586a. When a finger is put on the finger hook 586d and the roller shaft 586a is pulled downward, the roller 586 is removed from the U-shaped recess of the upper rail 587.

  The connecting portion of the horizontal frame 585b and the rotating frame 585c is fitted to a shaft 585d on the side of the horizontal frame 585b so that a cylindrical portion 585e on the side of the rotating frame 585c is rotatable and slidable in the axial direction. A wavy cam 585f is integrally formed with the tube portion 585e, and the tube portion 585e is urged upward by a spring 585h so that a pin 585g inserted perpendicularly to the shaft 585d contacts the cam 585f. Yes. Normally, the pin 585g is engaged with the concave portion of the cam 585f, and the rotation frame 585c is stabilized in a state of facing the left and right sides. A stopper 585i is secured to the cam 585f so that the rotating frame 585c does not rotate to the seedling stage side than the stable state.

  Further, the middle part of the seedling feed belt operation stopping wire 612 of the two outer strips is fixed at an appropriate position of the rotating frame 585c. For this reason, when the outer two strips of the seedling stage are folded while the rollers 586 that support the right and left outer seedling parts are disengaged from the U-shaped recesses of the upper rail 587, the rotating frame 585c is pulled by the wire 612. Pivots backwards. At this time, since the pin 585g slides along the wavy cam 585f, the rotation frame 585c rotates smoothly.

  In this way, a plurality of seedling tanks 51t,... As seedling placement units 51-1, 51-2,. For example, in the seedling stage 51 having an eight or more-line structure, the seedling tanks of the folding seedling loading parts are formed on the left and right sides of the six seedling tank central parts 51t,. .. Are provided, and the seedling tank extending portions 51t,... At the outer end portions are configured to be rotatable inward in the left-right direction with respect to the seedling tank central portions 51t,.

  At this time, as shown in FIG. 22 (a), the seedling tank extending portion 51t,... Is located at the outer end of the seedling mounting base 51 of the seedling planting portion 4, and the seedling tank extending A seedling tank folding detection sensor 432 is provided as a seedling tank detection member that detects the “non-working state” that is positioned inwardly in the left-right direction of the seedling mount 51 of the seedling planting unit 4 by folding the portions 51t,. deep. In FIG. 22B, the microcomputer 400 does not accept the operation of the switching motor 300m when the seedling tank folding detection sensor 432 detects the “non-working state” (loop of steps ST35 to ST34 to ST36). When the seedling tank folding detection sensor 432 detects the “working state”, the operation operation of the switching motor 300m is accepted.

  In this way, when the seedling tank extending portion 51t,... Is folded, the spare seedling mounting stand 38 does not operate and remains in the three-stage “storage state”, and the seedling tank extending portion 51t. ,... Are open, the preliminary seedling stage 38 is switched to the “deployed state”. Therefore, when the seedling transplanter 1 is transported to the work place or when the seedling tank extension portion 51t,... Thus, it is possible to prevent the surrounding objects from being damaged by contacting the spare seedling stage 38 or the surrounding objects being damaged.

<Operational restriction according to blower folded state>
Similarly, you may make it restrict | limit the action | operation of the preliminary seedling mounting base 38 corresponding to the folding state of the blower 58 of the fertilizer applicator 5. FIG. That is, as shown in FIG. 23A, a blower state detection sensor 433 is provided in the folded portion of the blower 58, and in FIG. 23B, the blower state detection sensor 433 detects that the blower 58 is folded. During the operation, the microcomputer 400 does not operate the spare seedling stage 38 (loop of steps ST37 to ST34 to ST38). When the blower 58 is folded and the seedling transplanter 1 is accommodated in a warehouse or the like, the spare seedling stage 38 can be prevented from being opened and damaged by an erroneous operation.

<Operation restriction according to the “storage state” of the drawing marker>
As shown in FIG. 24, the drawing marker 184 includes a marker arm 274 attached to the inner portion 273a of the rail protection frame 273 so as to be able to stand upside down, and a marker shaft provided at a front end portion of the marker arm 274 in a substantially perpendicular direction. 275 and a marker body 276 that is rotatably provided at the tip of the marker shaft 275. Note that the marker body 276 includes a plurality of marking portions 276a projecting from the outer periphery thereof. The tip of the marker shaft 275 is bent at a substantially right angle so as to be directed in the left-right direction at the time of drawing, and the marking portion 276a of the marker body 276 is rotated by grounding and rotating the marker body 276 in the next stroke. Mark the field on the center line. The marker shaft 275 is attached to the marker arm 274 via the tube shaft 277, and the rotation of the tube shaft 277 is restricted by a stopper 278 fixed to the marker arm 274, so that the marker body 276 is predetermined with respect to the marker arm 274. Around the axis of the marker arm 274, the marker arm 274 is provided so as to be rotatable only on the rear side of the predetermined position so as to be movable only on the rear side of the position. The marker shaft 275 is urged to rotate forward by a torque spring 279 provided between the stopper 278 of the marker arm 274 and the marker shaft 275.

  As shown in FIG. 24, when the marker arm 274 rises or falls, the turning trajectory T of the tip of the arm 274 is inclined downward in a side view, and the marker shaft 275 is formed by the marker body 276. When the wire is drawn, it is inclined in a forward leaning posture so that it is located on the rear side as it goes below the rotation trajectory T so as to be located on the rear side. This makes it difficult for the marker shaft 275 to buckle due to the resistance that the marker body 276 receives from the field when the machine moves forward, and the marker body 276 is positioned as far back as possible so that the marker is switched to the non-drawing state. When the arm 274 is turned upright, the mud splash due to the marker body 276 does not fall on the operator sitting on the front seat 31. In addition, since the marker shaft 275 is tilted forwardly from the rotation trajectory T of the tip of the marker arm 274 at the time of drawing, the marker shaft 275 is moved at the end of the rotation when the marker arm 274 is turned upright. The inertial force causes the torque spring 279 to resist against the torque trajectory T so that the mud splash by the marker body 276 acts on the rear side with respect to the pivot trajectory T. This prevents mud from falling on the worker sitting on the seat 31. With this configuration, the seedling planting portion 4 can be laid out close to the rear wheels 11, 11, that is, the traveling vehicle body 2 side. In particular, the marker body 276 that rotates as described above tends to adhere mud and tends to cause mud splashing. Conventionally, as shown in Japanese Patent Application Laid-Open No. 2001-78514, the marker body 276 has a marker when standing up. The marker body is arranged in front of the rotation trajectory of the tip of the marker arm so that the body can be accommodated in front of the seedling stage.

  The marker shaft 275 is regulated by a regulation pin 280 provided on the marker arm 274 side so as not to rotate around this axis. The marker shaft 275 is regulated by inserting the regulation pin 280 into the normal position hole 281 a provided in the positioning plate 281 integral with the marker shaft 275. The positioning plate 281 is also provided with a storage position hole 281b. By pulling out the regulation pin 280 and rotating the marker shaft 275 substantially at right angles around the axis, the marker plate 281 is inserted into the storage position hole 281b. The body 276 can be fixed in a state where the body 276 is rotated around the marker shaft 275 at a substantially right angle. Thus, by rotating the marker body 276, the marker body 276 can be narrowed along the seedling stage 51 in a side view, and when the drawing marker 184 is not used, such as when traveling on the road or when storing the aircraft, The marker body 276 can be stored by entering the front side of the seedling stage 51. This storage may be performed by rotating the marker arm 274 so as to be engaged with a hook (not shown) provided on the seedling planting part 4 side. Thereby, there is no need to remove the marker body 276 as in the prior art, and the drawing marker 184 can be housed inside the aircraft in the left-right direction, and the lateral width of the aircraft can be reduced. At this time, since the marker body 276 is housed inside the left and right sides from the end of the rail protection frame 273, it is possible to prevent the marker body 276 from interfering with other structures such as a bag. The breakage of the marker 184 can be prevented.

  As described above, as shown in FIG. 27A, the drawing marker 184 is “stored” by the drawing marker storage hook, as shown in FIG. 27A, with respect to the drawing marker storage hook as the support member that supports the drawing marker 184 of the standing drawing member in the “stored state”. While the drawing marker detection sensor 434 as a storage detection member for detecting that the state is “the state” is provided in the seedling planting unit 4, while the drawing marker detection sensor 434 detects the “storage state” of the drawing marker 184, The microcomputer 400 may be controlled not to operate the switching motor 300m and not to open the preliminary seedling stage 38 (loop of steps ST39 to ST34 to ST40).

  The microcomputer 400 determines the operation of the switching motor 300m of the spare seedling stage 38 corresponding to the “accommodating state” of the drawing marker 184, and the microcomputer 400 determines that the “accommodating state” of the drawing marker 184 is not the “working state”. By judging and preventing the preliminary seedling stage 38 from being opened, when the seedling transplanter 1 is transported to the work place or accommodated in a warehouse or the like, the preliminary seedling stage 38 is put into an “expanded state” by an erroneous operation. Therefore, it is possible to prevent the spare seedling stage 38 from being damaged by being in contact with surrounding objects or from being damaged.

<Fixing hook for drawing marker storage>
As shown in FIGS. 28 (a) and 28 (b), a fixing hook 276s for storing the drawing marker 184 is provided on the first partition plate 48a of the first preliminary seedling stage 38a, and the fixing hook 276s is used for storing the aircraft. Alternatively, a configuration may be adopted in which the marker shaft 275 of the removed drawing marker 184 is sandwiched and supported when there is a wall at the edge and it is necessary to remove it.

  With the above configuration, when the drawing marker 184 is removed, the drawing marker 184 can be fixed and stored in the machine body, so that the drawing marker 184 rolls and moves outside during operation or storage. And the extra work of searching for the drawing marker 184 is omitted. In particular, during outdoor work, the structure is easy to fly because of the unevenness of the field and the airframe is swayed or blown by strong winds.

  If the fixing hook 276s is provided outside the machine body of the first partition plate 48a, when the drawing marker 184 is attached or detached during storage, the operator attaches or removes the marker shaft 275 of the drawing marker 184 to the fixing hook 276s without rising on the machine body. Work efficiency is improved.

  Further, since the fixed hook 276s and the marker shaft 275 do not interfere with the first, second, and third moving link members 39a, 39b, and 39c, the drawing marker 184 is operated with the spare seedling stage 38 attached. Also, it is possible to prevent the spare seedling stage 38 and the drawing marker 184 from being damaged.

<Lighting control of the stand seedling stage>
You may make it illuminate the preliminary seedling mounting stand 38 in the opening / closing operation with a light. For example, as shown in FIGS. 29 (a) and 29 (c), a spare seedling stage gear motor, that is, a standby seedling stage gear motor detection sensor 451 for detecting the operation of the switching motor 300m, and a light for illuminating the preliminary seedling stage 38 from above. 452 is provided. The light 451 is supported by the support member 49 and is disposed above the first preliminary seedling stage 38a which is the uppermost stage.

  In FIG. 29B, the microcomputer 400 turns on the light 452 while the spare seedling stage gear motor detection sensor 451 detects that the switching motor 300m is operating (loop of steps ST41 to ST43). ). The standby seedling stage 38 that is being opened and closed is lit up by a light 452, so that the operator can be alerted. In a dark place, the movement of the preliminary seedling stage 38 can be confirmed during the operation. Because it is possible, it becomes easy to detect danger.

<Empty box for spare seedling stage>
The seedling box remaining in the trace of replenishing the mat seedlings to the seedling planting unit 4 is placed on the machine body, or an empty box container is provided on the machine body and housed therein. However, if it is placed on the machine, it will cause the movement to be hindered when an operator gets on and off the machine or when replenishing seedlings, and the work efficiency is lowered. On the other hand, if an empty box storage container is provided, the seedling box will be located only in the empty box storage container, but the place where this empty box storage container is placed becomes immovable, and on the operator's body Movement is limited. This problem can be solved to some extent if the seedling box container is made smaller, but this time the seedling box capacity will be reduced and the seedling box will have to be put on the shore frequently, reducing work efficiency. .

In order to recover the above problem, as shown in FIG. 30, front and rear mounting bosses 701a1, 701a2, 701b1, 701b2, 701c1, 701c2 are provided below the first, second and third preliminary seedling platforms 38a, 38b, 38c. The first, second, and third auxiliary placements on the U-shape of the plan view for loading the mounting bosses 701a1, 701a2, 701b1, 701b2, 701c1, 701c2 It is good also as a structure which inserts the edge part of tray 702a, 702b, 702c so that sliding to the left-right direction of a body is possible.
The first, second, and third auxiliary loading trays 702a, 702b, and 702c are configured to be pulled out to the outside of the machine body.

  With the above configuration, when seedlings are placed on the spare seedling stage 38, the first, second, and third auxiliary placement trays 702a, 702b, and 702c are moved to the inside of the machine body and placed on the preliminary seedling stage 38. When the seedlings that have been placed are replenished to the seedling planting unit 4 and an empty box is generated, the first, second, and third auxiliary loading trays 702a, 702b, and 702c are pulled out to the outside of the machine body, and the first and second , Because it is possible to place empty boxes on the third auxiliary loading trays 702a, 702b, 702c, it is necessary to leave an empty box on the machine body or to provide an empty box container that restricts the place of movement. Therefore, the worker can move freely on the airframe, and the work efficiency is improved.

  In addition, when using the first, second and third auxiliary loading trays 702a, 702b and 702c, the first, second and third auxiliary loading trays 702a, 702a, Since 702b and 702c are not located, the movement of the worker is not hindered, and the work efficiency is further improved.

  The first and second bridge plates 703a and 703b are attached to the front and rear long side portions 702aL and 702bL of the first and second auxiliary loading trays 702a and 702b in the front-rear direction so as to be rotatable in the front-rear direction. Also good. The front and rear lengths of the first and second bridge plates 703a and 703b are equal to the front end of the second and third auxiliary loading trays 702b and 702c when the first and second bridge plates 703a and 703b are rotated rearward. It is the length that touches the part.

  As described above, the first auxiliary loading tray 702a and the second auxiliary loading tray 702b are connected by the first bridge plate 703a, and the second auxiliary loading tray 702b and the third auxiliary loading tray 702c are connected by the second bridge plate. Since it is connected at 703b, the empty box can be pushed and moved from the rear side of the machine body to the front side of the machine body, so that the work efficiency is improved.

  In addition, since the seedling box loaded with mat seedlings can be pushed and moved from the front side of the machine body to the rear side of the machine body, the work efficiency is improved and the first, second, and third auxiliary loading trays 702a, 702b, and 702c are improved. Since the seedling box can be placed, the load of seedlings increases, and the frequency of returning to the heel for replenishing seedlings decreases, so that the work efficiency is greatly improved.

DESCRIPTION OF SYMBOLS 1 Riding type rice transplanter with fertilizer 2 Traveling vehicle body 3 Lifting link device 4 Seedling planting part 5 Fertilizer 10 Front wheel 11 Rear wheel 12 Mission case 13 Front wheel final case 15 Main frame 18 Rear wheel gear case 20 Engine 21 Belt transmission 23 HST
25 planting clutch case 26 planting transmission shaft 27 rotor 27a first rotor 27b second rotor 28 fertilizer transmission mechanism 30 engine cover 31 seat 32 front cover 34 handle 35 floor step 36 rear step 38 spare seedling stand 38a first spare seedling Mounting base 38b Second preliminary seedling mounting base 38c Third preliminary seedling mounting base 38a1, 38a2, 38b1, 38b2, 38b3, 38c1, 38c2 Rotating shaft 38a-F, 38b-F, 38c-F Front protrusion 38a-R, 38b-R, 38c-R Rear protrusion 38a-S, 38b-S, 38c-S Receiving member 38a-G, 38b-G, 38c-G Side plate 38a-T, 38b-T, 38c-T Tray 39a No. 1 moving link member 39b 2nd moving link member 39c 3rd moving link member 40 upper link 41 lower Link 42 Link base frame 43 Vertical link 44 Connection shaft 45a to 45d First to fourth auxiliary links 46 Lifting hydraulic cylinder 47a to 47f First to sixth stoppers 48a to 48c First to third partition plates 49 Support member, support frame 49a Rotation Shaft 49p1, 49p2 Mounting column ax1, ax2 Rotating shaft 50 Transmission case 51 Seedling stage 51-1 to 51-10 Seedling part 51a Seedling outlet 51b Seedling feed belt 51t Seedling tank 52 Seedling planting device 52a Seedling attachment tool 53 Electric motor for blower 55 Center float 56 Side float 58 Blower 59 Air chamber 60 Fertilizer hopper 61 Feeding part 62 Fertilizer hose 65 Support frame body 65a Support roller 65b Both side members 73a Rotation lock plate 73b Rotation lock lever 73c Rotation lock Pin 73d Cable 73e Supplement Plate 184 Drawing marker 273 Rail protection frame 273a Inner portion 274 Marker arm 275 Marker shaft 276 Marker body 276a Marking part 276s Fixing hook 277 Tube shaft 278 Stopper 279 Torque spring 280 Restriction pin 281 Positioning plate 281a Normal position hole 281b For storage position Hole 300 Switching device 300 m Switching motor 300 g Rotating gear 400 Microcomputer 431, 431-1 to 431-6 standby seedling stage switch 432 seedling tank folding detection sensor 433 blower state detection sensor 434 drawing marker detection sensor 451 preliminary seedling stage gear motor detection Sensor 452 Light 581-1 to 581-11 Partition wall 581a Inner part 581b Outer part 582 Horizontal frame 582A Central part 582B Outer part 583 Seedling Plate 583b L-shaped body portion 585 Seed base mounting frame 562-2, 562-4 Unit transmission portion 585a Vertical frame 585b Horizontal frame 585c Rotating frame 585d Shaft 585e Tube portion 585f Cam 585g Pin 585h Spring 585i Stopper 586 Roller roller 586 586b Spring 586c Split pin 586d Finger hook 587 Upper rail 588 Mounting member 617 Column 620a, 620b,... Cylindrical portion 621 Rotating shaft 622,… Column support 623 Auxiliary column 624 Fixing member 625 Round hole 626 Screw hole 627 Fixed diameter portion 627 628 Knock pin 629 Spring 631 Horizontal pipe 631A Center portion 631B Outer portion 632 Male screw member 633 Screw hole 634 Fixing rod 634a Small diameter portion 636 Spring 637 Knock pin 601A Center seedling vertical feed device 601B Left and right outer seedling vertical feed device 603aA Roller drive shaft 603aB Outer roller drive shaft 607 Drive arm 608 Ratchet mechanism 612 Seedling feed belt operation stop wire 640 Drive clutch body 641 Driven Clutch body 642 Spring 701a1, 701a2, 701b1, 701b2, 701c1, 701c2 Mounting boss 702a, 702b, 702c First, second and third auxiliary loading trays 702aL, 702bL Long side portions 703a, 703b First and second bridge plates

Claims (4)

A seedling planting part (4) is provided at the rear part of the traveling vehicle body (2) traveling in the field so as to be movable up and down, and a plurality of spare seedling mounting members (38a) for loading spare seedlings on the front part of the traveling vehicle body (2). , 38b, 38c) and a link mechanism (39a, 39b, 39c) for rotatably connecting the plurality of preliminary seedling placement members (38a, 38b, 38c), the link mechanism (39a, 39b, 39c) In the seedling transplanting machine provided with a spare seedling frame (38) that can be switched between a deployed state in which the plurality of preliminary seedling mounting members (38a, 38b, 38c) are arranged in a line in the front and back and a storage state in which the upper and lower stages are arranged in a row,
There is provided a switching device (300) for switching the preliminary seedling frame (38) to the expanded form or the stored form, and the rotation shafts (ax1, ax2) of the link mechanisms (39a, 39b, 39c) are attached to the support posts (49p1, 49p2). Provided in
The switching device (300) includes a rotating member (300g) for rotating the link mechanism (39a, 39b, 39c) about the rotating shaft (ax1, ax2), and the rotating member (300g). a switching actuator for rotating (300 meters), constitutes said switching actuators (300 meters) in the stop position adjustment member is stopped at an arbitrary position,
Further, rear projections (38a-R, 38b-R, 38c-R) are respectively formed on the rear side of the preliminary seedling mounting members (38a, 38b, 38c) and in the left and right central portions, and the preliminary seedling mounting members ( 38a, 38b, 38c) front protrusions (38a-F, 38b-F, 38c-F) are formed on both the left and right sides, respectively, and the left and right front protrusions (38a-F, 38b-F, 38c) are formed. -F), receiving members (38a-S, 38b-S, 38c-S) for receiving the rear protrusions (38a-R, 38b-R, 38c-R) are provided between the left and right sides, respectively. Seedling transplanter. A seedling planting part (4) is provided at the rear part of the traveling vehicle body (2) traveling in the field so as to be movable up and down, and a plurality of spare seedling mounting members (38a) for loading spare seedlings on the front part of the traveling vehicle body (2). , 38b, 38c) and a link mechanism (39a, 39b, 39c) for rotatably connecting the plurality of preliminary seedling placement members (38a, 38b, 38c), the link mechanism (39a, 39b, 39c) In the seedling transplanting machine provided with a spare seedling frame (38) that can be switched between a deployed state in which the plurality of preliminary seedling mounting members (38a, 38b, 38c) are arranged in a line in the front and back and a storage state in which the upper and lower stages are arranged in a row,
There is provided a switching device (300) for switching the preliminary seedling frame (38) to the expanded form or the stored form, and the rotation shafts (ax1, ax2) of the link mechanisms (39a, 39b, 39c) are attached to the support posts (49p1, 49p2). Provided in
The switching device (300) includes a rotating member (300g) for rotating the link mechanism (39a, 39b, 39c) about the rotating shaft (ax1, ax2), and the rotating member (300g). A switching actuator (300m) to be rotated and a stop position adjusting member for stopping the switching actuator (300m) at an arbitrary position,
Rear protrusions (38a-R, 38b-R, 38c-R) are respectively formed on the rear side of the preliminary seedling mounting member (38a, 38b, 38c) and in the left and right central portions, and the preliminary seedling mounting member (38a , 38b, 38c), front protrusions (38a-F, 38b-F, 38c-F) are formed on both the left and right sides, respectively, and the left and right front protrusions (38a-F, 38b-F, 38c-) are formed. F) receiving members (38a-S, 38b-S, 38c-S) for receiving the rear protrusions (38a-R, 38b-R, 38c-R) are provided between the left and right sides of F),
Further, the preliminary seedling placement members (38a, 38c) are provided at the front part of the preliminary seedling placement member (38a) positioned at the foremost position in the deployed state and the rear part of the preliminary seedling placement member (38c) positioned at the last position in the deployed state. ) Provided with seedling detection members (431-1, 431-6) for detecting whether or not seedlings are loaded, and the two seedling detection members (431-1, 431-6) detect the loading of seedlings. when the seedling transplantation machine controller (400) characterized in that permit the actuation of the switch actuator (300 meters). A seedling planting part (4) is provided at the rear part of the traveling vehicle body (2) traveling in the field so as to be movable up and down, and a plurality of spare seedling mounting members (38a) for loading spare seedlings on the front part of the traveling vehicle body (2). , 38b, 38c) and a link mechanism (39a, 39b, 39c) for rotatably connecting the plurality of preliminary seedling placement members (38a, 38b, 38c), the link mechanism (39a, 39b, 39c) In the seedling transplanting machine provided with a spare seedling frame (38) that can be switched between a deployed state in which the plurality of preliminary seedling mounting members (38a, 38b, 38c) are arranged in a line in the front and back and a storage state in which the upper and lower stages are arranged in a row,
There is provided a switching device (300) for switching the preliminary seedling frame (38) to the expanded form or the stored form, and the rotation shafts (ax1, ax2) of the link mechanisms (39a, 39b, 39c) are attached to the support posts (49p1, 49p2). Provided in
The switching device (300) includes a rotating member (300g) for rotating the link mechanism (39a, 39b, 39c) about the rotating shaft (ax1, ax2), and the rotating member (300g). A switching actuator (300m) to be rotated and a stop position adjusting member for stopping the switching actuator (300m) at an arbitrary position,
Rear protrusions (38a-R, 38b-R, 38c-R) are respectively formed on the rear side of the preliminary seedling mounting member (38a, 38b, 38c) and in the left and right central portions, and the preliminary seedling mounting member (38a , 38b, 38c), front protrusions (38a-F, 38b-F, 38c-F) are formed on both the left and right sides, respectively, and the left and right front protrusions (38a-F, 38b-F, 38c-) are formed. F) receiving members (38a-S, 38b-S, 38c-S) for receiving the rear protrusions (38a-R, 38b-R, 38c-R) are provided between the left and right sides of F),
Further, the seedling planting part (4) is configured by arranging a plurality of seedling tanks (51t,...) In which the seedlings are placed for each planting line in the left-right direction, and the outer end of the seedling planting part (4) The seedling tank (51t,...) Is configured to be rotatable inward in the left-right direction, and the seedling tank (51t,. A seedling tank detecting member (432) for detecting whether or not the working state is located at the position is provided, and when the seedling tank detecting member (432) is detecting the working state, the control device (400) is a switching actuator. seedling transplanter you characterized in that the configuration allowing the operation of the (300 meters).
A seedling planting part (4) is provided at the rear part of the traveling vehicle body (2) traveling in the field so as to be movable up and down, and a plurality of spare seedling mounting members (38a) for loading spare seedlings on the front part of the traveling vehicle body (2). , 38b, 38c) and a link mechanism (39a, 39b, 39c) for rotatably connecting the plurality of preliminary seedling placement members (38a, 38b, 38c), the link mechanism (39a, 39b, 39c) In the seedling transplanting machine provided with a spare seedling frame (38) that can be switched between a deployed state in which the plurality of preliminary seedling mounting members (38a, 38b, 38c) are arranged in a line in the front and back and a storage state in which the upper and lower stages are arranged in a row,
There is provided a switching device (300) for switching the preliminary seedling frame (38) to the expanded form or the stored form, and the rotation shafts (ax1, ax2) of the link mechanisms (39a, 39b, 39c) are attached to the support posts (49p1, 49p2). Provided in
The switching device (300) includes a rotating member (300g) for rotating the link mechanism (39a, 39b, 39c) about the rotating shaft (ax1, ax2), and the rotating member (300g). A switching actuator (300m) to be rotated and a stop position adjusting member for stopping the switching actuator (300m) at an arbitrary position,
Further, a pair of left and right drawing members (184) for drawing the course of the traveling vehicle body (2) in the next stroke to the field are provided in the seedling planting part (4) so as to be able to stand upright and fall, and the drawn drawing member (184) standing up. A support member that supports the storage member in the storage state is provided in the seedling planting part (4), and a storage detection member (434) that detects whether the drawing member (184) is in the storage state by the support member, the when closing sensing member (434) has detected the retracted state, the control device (400) seedling transplanter you characterized in that it is configured to regulate the operation of the switching actuator (300 meters).

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