JP4266760B2 - Ride type rice transplanter - Google Patents

Description

  The present invention relates to a riding type rice transplanter provided with a supply device for supplying medicine (insecticide, fungicide, etc.) or fertilizer from above to seedlings placed on the seedling surface.

In a riding type rice transplanter, for example, as disclosed in Patent Document 1, a support member (27 in FIGS. 2, 3, and 4 of Patent Document 1) is used as a seedling stand (FIGS. 1, 2, and 4 of Patent Document 1). 3, 4) is supported so as to be placed over the seedling surface (14 a in FIG. 3 of Patent Document 1) over the upper side, and a feeding device (FIG. 1, 2, 3, 4 of Patent Document 1). 30) is provided so as to be reciprocally movable along the support member, and drive mechanism for reciprocating the supply device along the support member (40, 44 in FIGS. 1, 2, 3, and 4 of Patent Document 1). Are provided on the support member.
Thereby, a chemical | medical agent or a fertilizer is supplied from the upper direction to the seedling mounted on the seedling stand from a supply apparatus, a supply apparatus reciprocatingly moving along a support member.

Japanese Patent Laid-Open No. 2003-52211 (FIGS. 1, 2, 3, and 4)

  When the riding device is equipped with a supply device, a support member, and a drive mechanism as in Patent Document 1, for example, in a seedling platform having a large width such as an 8-row model or a 10-row model, the entire width of the seedling platform is set. If a long support member is provided, it takes time for the supply device to move from the right end of the support member to the left end (from the left end to the right end). It may be difficult to evenly supply the medicine or fertilizer (for example, when the feeding device starts moving from the right end of the support member to the left end while feeding the medicine or fertilizer, the feeding device supports If the seedling placed on the seedling table by the vertical feed mechanism has been sent down many times before reaching the left end of the member, the seedling that is not supplied with chemicals or fertilizer in the vicinity of the left end of the support member Part may occur). In addition, when a long support member that extends over the entire width of the seedling table is provided, anxiety is caused in terms of strength of the support member.

  In the riding type rice transplanter, the present invention includes a feeding device, a support member, and a drive mechanism. For example, even in a seedling table having a large width such as an eight-row type or a ten-row type, a drug is applied to the seedling placed on the seedling table. Or it aims at comprising so that fertilizer may be supplied appropriately.

[I]
(Constitution)
The first feature of the present invention is a riding type provided with a seedling platform having a large number of seedling surfaces, and provided with planting arms for taking out the seedlings from the seedling surfaces and planting them on the rice field corresponding to each of the seedling surfaces. The rice transplanter is configured as follows.
A right support member supported by a seedling platform so as to be arranged over a predetermined number of seedling surfaces on the right, a right supply device provided to be reciprocally movable along the right support member, and right And a right drive mechanism that reciprocates the right supply device along the right support member. Left support member supported by a seedling platform so as to be arranged over the upper surface of a predetermined number of seedling surfaces on the left, left supply device provided to be reciprocally movable along the left support member, left And a left drive mechanism that reciprocates the left supply device along the left support member. The right and left supply devices are configured to supply medicine or fertilizer from above to the seedlings placed on a predetermined number of seedling surfaces on the right and left while reciprocating along the right and left support members. . The position of the right or left side of the seedling platform is configured to be changeable, and the width of the seedling platform is configured to be narrower than the width of the seedling platform in the working state. Alternatively, the left support member is configured to be removable from the seedling table.

(Function)
According to the first aspect of the present invention, the right and left support members are supported by the seedling platform so as to be arranged over the predetermined number of seedling surfaces on the right and left, and the right and left supports are supported. The right and left supply devices are provided on the right and left support members, and the right and left supply devices are provided on the right and left support members to reciprocate along the right and left support members. With respect to the seedlings placed on the left predetermined number of seedlings, the medicine or fertilizer is supplied from the right supply device to the seedlings placed on the right predetermined number of seedlings. A drug or fertilizer is supplied from the supply device on the left.

Thus, according to the first feature of the present invention, the right and left feeding devices do not reciprocate over the entire width of the seedling platform (since they reciprocate over a predetermined number of seedling surfaces on the right and left). The right and left feeding devices reach relatively quickly from the right end to the left end (left end to right end) of the right and left support members. Therefore, for example, when the right supply device starts to move from the right end portion of the right support member to the left end portion while supplying the drug or fertilizer, the right supply device reaches the left end portion of the right support member until the right supply device reaches the left end portion. It is difficult for the seedlings placed on the seedling table to be sent down many times by the feeding mechanism, and the drug or fertilizer is evenly distributed on the seedlings placed on the seedling table. It becomes easy to be supplied.
According to the first feature of the present invention, the right and left support members are not necessary because the support members are divided into right and left support members rather than having a single long support member extending over the entire width of the seedling platform. It will not be long.

The riding type rice transplanter is configured so that the position of the right or left side of the seedling platform can be changed (for example, the right or left side of the front platform is separated and placed on the upper side of the other right or left side. There is a configuration in which the lateral width of the seedling platform is set to be narrower than the lateral width of the seedling platform in the working state by folding the right or left part of the platform upward (or downward).
According to the first aspect of the present invention, the right or left support member on the side to be repositioned is configured to be detachable from the seedling table (the right or left supply device and drive mechanism on the side to be repositioned) The right or left support member is removed together with the right or left support member), and the right or left side of the seedling platform is changed as described above, so that the width of the seedling platform is narrower than the width of the working seedling platform. If set to one, the right or left support member on the side to be repositioned is removed from the seedling platform, so that the right or left support member on the side to be repositioned is lateral from the width range of the seedling platform. You can avoid the situation of going out.

(The invention's effect)
According to the first feature of the present invention, in the riding type rice transplanter, the right and left feeding devices, the right and left support members, and the right and left drive mechanisms are provided, so that the seedling placed on the seedling platform is provided. The drug or fertilizer can be easily supplied evenly, and the supply performance of the drug or fertilizer to the seedlings placed on the seedling table can be improved. Since the right and left support members do not become unnecessarily long, the anxiety in terms of the strength of the right and left support members could be eliminated.

  According to the first feature of the present invention, when the position of the right or left part of the seedling platform is changed and the lateral width of the seedling platform is set to be narrower than the lateral width of the seedling platform in the working state, the position is changed. Change the position by removing the right or left support member from the seedling stand (the right or left feeding device and drive mechanism on the side to be repositioned are also removed together with the right or left support member) Can prevent the situation where the right or left support member on the side to be used goes out from the lateral width range of the seedling platform, and the whole seedling planting device can be integrated into a compact one It became so.

[II]
(Constitution)
The second feature of the present invention resides in the following configuration in the riding rice transplanter of the first feature of the present invention.
The right or left support member on the side whose position is to be changed is removed from the seedling stage and can be attached to the rear side of the right or left support member on which the position is not changed.

(Function)
According to the second feature of the present invention, the “action” described in the preceding item [I] is provided in the same manner as the first feature of the present invention, and in addition to this, the following “action” is provided.
According to the second feature of the present invention, as described in the preceding item [I], the position of the right or left side of the seedling platform is changed so that the lateral width of the seedling platform is larger than the lateral width of the seedling platform in the working state. When set to a narrow one, the right or left support member on the side to be repositioned can be removed from the seedling base and attached to the rear side of the right or left support member on the non-reposition side. There is no problem in storing the right or left support member on the side to be used.

(The invention's effect)
According to the second feature of the present invention, the “effect of the invention” described in the preceding item [I] is provided in the same manner as the first feature of the present invention. In addition, the following “effect of the invention” is provided. ing.
According to the second aspect of the present invention, when the right or left support member on the side to be repositioned is removed from the seedling table, there is no problem in storing the right or left support member on the side to be repositioned. And improved usability.

[III]
(Constitution)
The third feature of the present invention resides in the following configuration in the riding type rice transplanter of the second feature of the present invention.
The right or left support on the side to be repositioned in a state where the right or left support member on the side to be repositioned is removed from the seedling table and attached to the rear side of the right or left support member on the side that is not repositioned. The member is configured to be positioned in front of the rear end of the ground float.

(Function)
According to the third feature of the present invention, as in the second feature of the present invention, the “action” described in the preceding paragraphs [I] and [II] is provided. In addition, the following “action” is provided. Yes.
According to the third aspect of the present invention, as described in [II] above, the right or left support member on the side whose position is to be changed is removed from the seedling table, and the right or left support member on the side whose position is not changed is removed. When attached to the rear side, the right or left support member on the side to be repositioned is located in front of the rear end of the grounding float, so the right or left support member on the side to be repositioned is planted. There is no such thing as going out from the range of the device.

(The invention's effect)
According to the third feature of the present invention, the “effect of the invention” described in the preceding paragraphs [I] and [II] is provided in the same manner as the second feature of the present invention. In addition, the following “effect of the invention” is provided. Is provided.
According to the third aspect of the present invention, when the right or left support member on the side to be repositioned is removed from the seedling table and attached to the rear side of the right or left support member on the non-reposition side, the position change is performed. Since the right or left support member on the side to be used does not come out rearward from the range of the seedling planting device, the entire seedling planting device can be combined into a compact one .

[IV]
(Constitution)
A fourth feature of the present invention resides in the following configuration in the riding type rice transplanter of the second or third feature of the present invention.
An attachment part for attaching a right or left support member on the side whose position is to be changed is provided in a transmission case provided with a planting arm.

(Function)
According to the fourth feature of the present invention, the “action” described in the preceding paragraphs [I] to [III] is provided in the same manner as the second or third feature of the present invention. Is provided.
According to the fourth aspect of the present invention, as described in [II] and [III] above, the right or left support member on the side whose position is to be changed is removed from the seedling table, and the right or left side on which the position is not changed is removed. When attached to the rear side of the support member, an attachment portion for attaching the right or left support member on the side whose position is to be changed is provided in a transmission case provided with a planting arm. In this case, since the transmission case is configured with sufficient strength, the right or left support member on the side whose position is to be changed is supported by the transmission case with sufficient strength.

(The invention's effect)
According to the fourth feature of the present invention, the “effect of the invention” described in the preceding paragraphs [I] to [III] is provided in the same manner as the second or third feature of the present invention. “Effect of the invention” is provided.
According to the fourth aspect of the present invention, when the right or left support member on the side to be repositioned is removed from the seedling base and attached to the rear side of the right or left support member on the non-reposition side, the position change is performed. The right or left support member on the side to be moved is supported by the transmission case with sufficient strength, which is advantageous in terms of the support strength of the right or left support member on the side to be repositioned. .

[V]
(Constitution)
The fifth feature of the present invention resides in the following configuration in any one of the riding rice transplanters of the first to fourth features of the present invention.
The support bracket that supports the right support member on the seedling platform and the support bracket that supports the left support member on the seedling platform are configured to be the same.

(Function)
According to the fifth aspect of the present invention, the “action” described in the preceding paragraphs [I] to [IV] is provided similarly to any one of the first to fourth characteristics of the present invention. It has the following “actions”.
According to the fifth feature of the present invention, when the right and left support members are supported by the seedling table, the support brackets are also used in the right and left support members.

(The invention's effect)
According to the fifth feature of the present invention, the “effect of the invention” described in the preceding paragraphs [I] to [IV] is provided as in any one of the first to fourth features of the present invention. In addition, the following “effects of the invention” are provided.
According to the fifth feature of the present invention, when the right and left support members are supported on the seedling table, the support brackets are also used in the right and left support members, so that the number of parts is reduced and the structure is simplified. It became advantageous.

[VI]
(Constitution)
The sixth feature of the present invention resides in the following configuration in the riding type rice transplanter of the fifth feature of the present invention.
A support bracket is provided in a partition between adjacent seedling surfaces.

(Function)
According to the sixth feature of the present invention, the “action” described in the preceding paragraphs [I] to [V] is provided in the same manner as the fifth feature of the present invention. In addition to this, the following “action” is provided. ing.
According to the sixth aspect of the present invention, since the partition portion is located between the adjacent seedling setting surfaces, the right and left support members are arranged above the seedling setting surface by providing the support bracket in the partitioning portion. Can be easily done.

(The invention's effect)
According to the sixth aspect of the present invention, the “effects of the invention” described in the preceding paragraphs [I] to [V] are provided in the same manner as the fifth aspect of the present invention. It has an “effect”.
According to the sixth aspect of the present invention, the right and left support members can be easily arranged above the seedling setting surface, which is advantageous in terms of structure and arrangement.

[1]
As shown in FIG. 1, an engine 3 and a transmission case 4 are provided at the front of the aircraft supported by the front wheels 1 and the rear wheels 2, and an operating unit 5 is formed at the center of the aircraft, and four at the rear of the aircraft. A link-type link mechanism 6 is connected by a hydraulic cylinder 14 so as to be movable up and down, and a seedling planting device 7 is provided in the link mechanism 6 to constitute a riding type rice transplanter.

  As shown in FIGS. 1, 2, and 4, the seedling planting device 7 is configured in an eight-row planting type, and includes four transmission cases 8, and rotation cases that are rotatably supported on the left and right sides of the transmission case 8. 9, a pair of planting arms 10 provided at both ends of the rotating case 9, five grounding floats 11, a seedling setting table 13 provided with eight seedling setting surfaces 13a, and a seedling setting surface 13a of the seedling setting table 13 The belt-type vertical feed mechanism 12 provided in FIG.

  Thereby, as shown in FIGS. 1, 2, and 4, the rotation case 9 is rotationally driven as the seedling platform 13 is driven to reciprocate laterally to the left and right, and the seedling platform 13 (seedling surface 13 a). The seedling arm 10 alternately takes out the seedlings from the lower part of the seedling platform 13 (seedling surface 13a) and plantes them on the rice field. When the seedling platform 13 reaches the right and left ends of the reciprocating lateral feed drive, The seedling on the seedling base 13 (the seedling surface 13a) is sent downward by the feeding mechanism 12.

As shown in FIGS. 1 and 2, four feeding sections 24 corresponding to the two strips are attached to the rear side of the driving seat 23 provided in the driving section 5 and are made of transparent resin and store fertilizer. Are attached to the four feeding parts 24, and a blower 26 for supplying the feeding air to the feeding part 24 is provided. Eight groovers 28 for feeding fertilizer to the rice field while forming a groove on the side of the seedling planted by the planting arm 10 are prepared, and the grooving device 28 is attached to the ground float 11. Eight flexible hoses 27 are connected across the feeding portion 24 and the groove generator 28.
With the above structure, as seedlings are planted on the rice field as described above, the fertilizer in the hopper 25 is fed out from the feeding unit 24 by a predetermined amount, and through the hose 27 by the conveying air of the blower 26, the grooving device 28 The fertilizer is fed into the grooves formed on the paddy surface by the groove generator 28.

[2]
Next, the seedling bed 13 will be described.
As shown in FIGS. 3 and 4, the seedling base 13 is configured by nine partition portions 13b between the eight seedling setting surfaces 13a and the adjacent seedling setting surfaces 13a, and the right six seedlings are formed. The left two seedling setting surfaces 13a are configured to be separable from the setting surface 13a.

  As shown in FIG. 2, a support frame 15 is disposed on the rear surface of the seedling base 13 across the six seedling surfaces 13 a on the right and the two seedling surfaces 13 a on the left. The right end portion of the support frame 15 is swingably and slidably connected to the right six seedling setting surfaces 13a, and the left end portion of the support frame 15 is swingably connected to the left two seedling setting surfaces 13a. A support portion 16 is provided at the lower portion of the left end portion of the right six-row seedling setting surface 13a.

  The state shown in FIGS. 2, 3, and 4 is a working state of the seedling setting table 13 in which the right six seedling setting surfaces 13 a and the left two seedling setting surfaces 13 a are connected side by side in the left-right direction. When the seedling base 13 is set from the working state to the folded state, the seedling base 13 is moved to the left end of the reciprocating lateral feed drive, and the left two seedlings from the right six seedling resting surface 13a. The mounting surface 13a is separated, and the left two seedling mounting surfaces 13a and the support frame 15 are moved to the left with respect to the right six seedling mounting surfaces 13a, as shown in FIGS. The support frame 15 is swung upward to lift the left two seedling setting surfaces 13a, and the lower portion of the left two seedling setting surfaces 13a is supported by the support portion 16 and fixed.

  As a result, in the folded state of the seedling raising table 13, the left two seedling raising surfaces 13a are positioned above the right six seedling raising surfaces 13a as shown in FIGS. The left strip of the seedling surface 13a of the strip and the right strip of the left two seedling surface 13a overlap each other in plan view, and the width of the seedling platform 13 in the working state ( 3 and FIG. 4), the lateral width of the folded seedling bed 13 is narrow.

[3]
Next, the right and left support members 19 and 20 that support the right and left supply devices 17 and 18 will be described.
As shown in FIGS. 2, 5, and 6, five metal plate-like support brackets 32 are prepared, and the five support brackets 32 are all configured in the same shape. The support bracket 32 is formed in a U-shape when viewed from the side, and a large number of attachment holes 32a are opened at the upper portion, and the lower portion is bent into an oblique crank shape to form an inclined portion 32b. As shown in FIGS. 3, 4, 10, and 11, at the right end of the seedling placing base 13 (the right 6 seedling placing surface 13 a), the second and fourth from the right end of the lower part of the partitioning portion 13 b, The support bracket 32 is fixed, and the support bracket 32 is fixed to the lower end of the first partition portion 13b from the left end portion and the left end portion of the seedling setting table 13 (left two seedling setting surfaces 13a). .

  As shown in FIGS. 3, 6, and 11, a pipe-like support frame 38 is fixed to the upper portion of the support bracket 32 at the right end of the seedling setting table 13 (the right six-row seedling setting surface 13 a). The support frame 36 is fixed to the lower part of the second support bracket 32 from the right end of the right side 13 (the right 6 seedling setting surface 13a), and the seedling setting table 13 (the right 6 seedling setting surface 13a) The pipe-like support frames 38 and 33 are fixed to the upper and lower portions of the fourth support bracket 32 from the right end of FIG. As shown in FIGS. 3, 5, and 10, a pipe-like support frame 33 is fixed to a lower portion of the support bracket 32 at the left end portion of the seedling setting table 13 (left two seedling setting surfaces 13 a).

  As shown in FIGS. 3, 4, 6, and 11, a right support member 19 having a U-shaped cross section is prepared, and a pipe-like support portion 21 is fixed to the right support member 19. The support portion 21 of the right support member 19 is attached to the support frame 38 of the fourth support bracket 32 from the right end portion and the right end portion of the seedling setting table 13 (the right six-row seedling setting surface 13a), A support frame 36 of the second support bracket 32 from the right end portion of the seedling setting table 13 (the right six seedling setting surfaces 13 a) is attached to the right support member 19.

  As shown in FIGS. 3, 4, 5, and 10, a left support member 20 having a U-shaped cross section is prepared, and a pipe-like support portion 22 is fixed to the left support member 20. In the working state of the seedling table 13, the support frame 33 of the support bracket 32 at the left end of the seedling table 13 (left two seedling surface 13a) and the seedling table 13 (the right six seedlings) The support portion 22 of the left support member 20 is attached to the support frame 33 of the fourth support bracket 32 from the right end portion of the surface 13).

  As shown in FIGS. 3, 4, 5, 6, 10, and 11, the right guide rod extends over the attachment holes 32 a of the three support brackets 32 in the seedling setting table 13 (the right six seedling setting surfaces 13). 43 is attached, and the left guide rod 43 is attached across the attachment holes 32a of the two support brackets 32 in the seedling setting table 13 (the left two seedling setting surfaces 13a). In this case, by changing the mounting hole 32a of the support bracket 32, the positions of the right and left guide rods 43 can be changed up and down. A connecting portion 43a is provided at the right end portion of the left guide rod 43 (see FIGS. 3, 4 and 10), and the left end portion of the right guide rod 43 can be connected to and detached from the connecting portion 43a of the left guide rod 43. It is configured.

  As shown in FIGS. 3, 4, 5, and 6, in the working state of the seedling platform 13, the right support member 19 is located on the front side in plan view, and the left support member 20 is located on the rear side in plan view. The right and left support members 19 and 20 are located at the same height in a side view. The left end of the right support member 19 is positioned to the left of the position of the right end of the left support member 20, and the right end of the left support member 20 is to the right of the position of the left end of the right support member 19. Is located.

[4]
Next, the right and left supply devices 17 and 18 and the right and left drive mechanisms 29 and 30 will be described.
As shown in FIGS. 3 and 4, a right drive mechanism 29 is provided at the right end portion of the right support member 19, and a left drive mechanism 30 is provided at the left end portion of the left support member 20. As shown in FIG. 7, a drive sprocket 45 and a driven sprocket 46 are rotatably supported by the right and left drive mechanisms 29 and 30, and a motor 49 that rotates the drive sprocket 45 in the forward and reverse directions is provided. The driven sprocket 50 is rotatably supported by the left end portion of the right support member 19 (the right end portion of the left support member 20), and the chain 51 is wound around the drive sprocket 45 and the driven sprockets 46, 50. The chain 51 is disposed inside the right and left support members 19 and 20.

  As shown in FIGS. 5, 6, and 7, the right and left supply devices 17 and 18 include a hopper 52 that stores medicine (insecticide, fungicide, etc.) or fertilizer, a feeding unit 55 that is connected to the lower portion of the hopper 52, A supply hose 56 and the like connected to the lower portion of the feeding portion 55 are provided. A guide shoe 57 having a U-shaped cross section is fixed to the lower portion of the hopper 52, and the guide shoe 57 is movably mounted on the upper portions of the right and left support members 19, 20. 58 is applied to the right and left support members 19,20. A feeding roller 59 is rotatably supported inside the feeding portion 55, and a support shaft 59 a of the feeding roller 59 protrudes from the feeding portion 55 and enters the right and left support members 19, 20. A sprocket 60 fixed to the support shaft 59 a is engaged with the chain 51. The occlusion portion 61 is fixed to the feeding portion 55 and enters the right and left support members 19 and 20, and the occlusion portion 61 is engaged with the chain 51.

  As shown in FIGS. 5, 6, and 7, in the right and left supply devices 17 and 18, a cored bar member 62 is provided inside the supply hose 56, and the attitude of the supply hose 56 is set by the cored bar member 62. The cored bar member 62 is made of metal and has an elongated flat plate shape. As shown in FIGS. 2, 3, and 6, in the right supply device 17, the supply hose 56 is slightly bent to the right drive mechanism 29 side when viewed from the front, and is bent to the rear side when viewed from the side. As shown in FIGS. 2, 3, and 5, in the left supply device 18, the supply hose 56 is slightly bent to the left drive mechanism 30 side in a front view and is bent to the front side in a side view. As a result, as shown in FIGS. 2, 5, and 6, in the right and left supply devices 17 and 18, the supply port 56 a at the lower end of the supply hose 56 is in the same position in a side view. The supply port 56 a is located on the rear side of the right and left guide rods 43.

  With the above structure, as shown in FIGS. 3, 4, and 7, the drive sprocket 45 and the chain 51 are rotationally driven in the forward and reverse directions by the motor 49, and the right supply device 17 has the right and left end portions of the right support member 19. The left supply device 18 is reciprocated across the right and left end portions of the left support member 20. In this case, if the right supply device 17 is positioned at the right end of the right support member 19, the left supply device 18 is positioned at the right end of the left support member 20, and the right supply device 17 is When positioned at the left end of the support member 19, the right and left supply devices 17, 18 are simultaneously driven to reciprocate in the same direction so that the left supply device 18 is positioned at the left end of the left support member 20. The

  When the right and left supply devices 17 and 18 are reciprocated as described above, the sprocket 60 is rotationally driven by the chain 51 and the feeding roller 59 is rotationally driven as shown in FIGS. The medicine (insecticide, fungicide, etc.) or fertilizer stored in the hopper 52 is fed out by a predetermined amount by the feeding roller 59 and falls downward from the supply port 56 a of the supply hose 56. Thereby, as shown in FIG.3 and FIG.4, a chemical | medical agent (an insecticide, a disinfectant, etc.) is fed from the right supply apparatus 17 to the seedling placed on the seedling placing base 13 (the right four seedling placing surface 13a). ) Or fertilizer is supplied, and the medicine (insecticide, fungicide, etc.) or fertilizer from the left supply device 18 is applied to the seedling placed on the seedling stage 13 (left four seedling setting surface 13a). Is supplied.

  In this case, as shown in FIGS. 5 and 6, the seedling placed on the seedling table 13 is tilted slightly forward by the right and left guide rods 43, and the right and left are placed on the tilted portion. A medicine (insecticide, fungicide, etc.) or fertilizer is supplied from the supply devices 17 and 18. When the right and left supply devices 17 and 18 are driven to reciprocate as described above, chemicals (insecticide, bactericides, etc.) or fertilizer may be supplied also to the partition portion 13b (support bracket 32). In this case, as shown in FIGS. 3, 5, and 6, the inclined portion 32b of the support bracket 32 guides the medicine (insecticide, fungicide, etc.) or fertilizer to the seedling on the adjacent seedling surface 13a).

[5]
Next, the case where the seedling platform 13 is set from the working state to the folded state as described in [2] above will be described.
As shown in FIGS. 2 and 4, a pipe-shaped attachment portion 31 is fixed to the second transmission case 8 from the right end portion and the right end portion of the seedling planting device 7. As a result, when the seedling base 13 is set from the working state to the folded state, the left side of the seedling base 13 is moved to the left end of the reciprocating lateral feed drive, as shown in FIGS. The support portion 22 of the support member 20 (left supply device 18 and left drive mechanism 30) is removed from the support frame 33 of the support bracket 32, and the left support member 20 (left supply device 18 and left drive mechanism 30) is removed. ) Is attached to the attachment portion 31.

  As a result, as shown in FIGS. 8 and 9, the left support member 20 (the left supply device 18 and the left drive mechanism 30) is replaced with the right support member 19 (the right supply device 17 and the right drive mechanism 29). ) Is located on the lower side on the rear side and is supported by the transmission case 8. With the left support member 20 (left supply device 18 and left drive mechanism 30) supported by the transmission case 8, the left support member 20 (left supply device 18 and left drive mechanism 30) is grounded. It is located in front of the rear end of the float 11.

Next, as shown in the preceding item [2] and shown in FIGS. 8 and 9, the left two seedlings 13a are separated from the right six seedlings 13a and the right six seedlings are placed. Move the left two seedling setting surfaces 13a and the support frame 15 to the left with respect to the surface 13a, swing the support frame 15 upward, lift the left two seedling setting surfaces 13a, The lower part of the two seedling setting surfaces 13a is supported and fixed to the support portion 16 (the seedling setting table 13 is folded).
In this case, the left two seedling setting surfaces 13a are positioned next to the left of the right and left support members 19, 10 (right and left supply devices 17, 18, right and left drive mechanisms 29, 30). In this state, the rear part (lower part) of the left two seedlings on the seedling 13 a is located above the rear end of the grounding float 11.

[First Alternative Embodiment of the Invention]
In the above-mentioned [Embodiment of the invention], instead of obtaining the folded state of the seedling platform 13 by positioning the left two seedling setting surfaces 13a above the right six seedling setting surfaces 13a, The left two strips 13a are turned upside down and positioned above the right six seedlings 13a, so that the seedling platform 13 can be folded or the right six strips 13a can be obtained. It is also possible to fold the left two seedling setting surfaces 13a upward (or downward) with the connection point with the seedling setting surface 13a as a fulcrum to obtain a folded state of the seedling setting table 13. In this case, the left one seedling setting surface 13a or the left three seedling setting surface 13a may be set in the folded state as described above.

[Second Embodiment of the Invention]
In contrast to the above-mentioned [Embodiment of the invention], the right two-row seedling surface 13a (the right one or three seedling-raising surface 13a) is replaced with the above-mentioned [First embodiment of the invention]. You may comprise so that it may set to such a folding state. 3 and 4, the left support member 20 is positioned on the front side in a plan view, and the right support member 19 is positioned on the rear side in a plan view. A pipe-shaped attachment portion 31 is fixed to the second transmission case 8 from the left end portion and the left end portion of the device 7.
The present invention can be applied not only to the 8-row seedling setting stand 13 (8-row planting type seedling planting device 7) but also to the 10-row seedling setting table 13 (10-row planting type seedling planting device 7).

Overall side view of riding rice transplanter Whole side view of seedling planting device in working state of seedling platform Rear view of the seedling stand in the working state Plan view near the seedling platform in working condition Vertical side view of the left support member and the vicinity of the left supply device Longitudinal side view of the vicinity of the right support member and the right supply device Vertical rear view of the right support member, right supply device, and right drive mechanism Overall side view of the seedling planting device with the seedling bed folded Top view of the seedling table in the folded state Perspective view of the vicinity of the left support member Perspective view of the vicinity of the right support member

Explanation of symbols

DESCRIPTION OF SYMBOLS 8 Transmission case 10 Planting arm 11 Ground float 13 Seedling stand 13a Seedling surface 13b Partition part 17 Right supply device 18 Left supply device 19 Right support member 20 Left support member 29 Right drive mechanism 30 Left drive Mechanism 32 Support bracket

Claims (6)

In a riding-type rice transplanter equipped with a seedling platform with a large number of seedling surfaces, a planting arm for taking out seedlings from the seedling surface and planting them on the rice field corresponding to each of the seedling surfaces,
A right support member supported by the seedling platform so as to be disposed over a predetermined number of right seedling placement surfaces, and a right support member that is reciprocally movable along the right support member. A supply device, and a right drive mechanism that is provided on the right support member and reciprocally drives the right supply device along the right support member,
A left support member supported by the seedling platform so as to be disposed over a predetermined number of left seedling placement surfaces, and a left support member that is reciprocally movable along the left support member. A supply device, and a left drive mechanism that is provided in the left support member and reciprocates the left supply device along the left support member,
The right and left supply devices are configured to supply medicine or fertilizer from above to seedlings placed on a predetermined number of seedling surfaces on the right and left while reciprocating along the right and left support members. As well as
The position of the right or left part of the seedling platform is configured to be changeable, the lateral width of the seedling platform is configured to be smaller than the lateral width of the seedling platform in the working state, and the position is changed. Riding type rice transplanter in which the right or left support member on the side is configured to be removable from the seedling bed.   The right or left support member on the side whose position is to be changed is removed from the seedling table, and can be attached to the rear side of the right or left support member on the side where the position is not changed. Riding type rice transplanter. In the state where the right or left support member on the side whose position is to be changed is removed from the seedling table and attached to the rear side of the right or left support member on the side whose position is not changed,
The riding type rice transplanter according to claim 2, wherein the right or left support member on the side where the position is changed is configured to be positioned in front of a rear end of the grounding float.   The riding type rice transplanter according to claim 2 or 3, wherein an attachment portion for attaching the right or left support member on the side whose position is changed is provided in a transmission case provided with the planting arm.   The support bracket for supporting the right support member on the seedling platform and the support bracket for supporting the left support member on the seedling platform are configured to be the same. Riding type rice transplanter as described in 1.   The riding type rice transplanter according to claim 5, wherein the support bracket is provided in a partition portion between the adjacent seedling surfaces.

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