JP2010011812A - Riding-type rice transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To constitute spare seedling-carrying platforms so as to provide easily a state in which the spare seedling-carrying platforms are arranged in the upper and lower direction at a prescribed interval, and a state in which the spare seedling-carrying platforms are arranged in one line state, in a riding-type rice transplanter. <P>SOLUTION: The riding-type rice transplanter is constituted as follows. Linking members 31 to 34 are installed in supporting frames 22 to 24 supported by a machine body so as to be freely turnable, and a plurality of the spare seedling-carrying platforms 51 to 54 are supported by the linking members 31 to 34. The first state in which the spare seedling-carrying platforms 51 to 54 are arranged in the upper and lower direction at the prescribed interval, and the second state in which the spare seedling-carrying platforms are arranged in one line state are constituted so as to be freely operable by the turning operation of the linking members 31 to 34. In the second state, the spare seedling-carrying platforms 51 to 54 are constituted so as to be positioned at the vicinity of the upper terminal parts of the supporting frames 22 to 24. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a structure of a reserve seedling platform in a riding type rice transplanter.

In the riding type rice transplanter, as disclosed in Patent Document 1, the support frame (FIGS. 1 and 25 in FIG. 5 of Patent Document 1) fixed to the machine body is set as a stand for a seedling (see FIG. 1). 1 and 27 in FIG. 5 are often attached at predetermined intervals in the vertical direction.
In Patent Document 1, the uppermost reserve seedling platform (27 (u) in FIGS. 1 and 5 of Patent Document 1) and the lowermost preliminary seedling platform (27 in FIG. 1 and FIG. d)) is removed from the support frame and attached to the front and rear of the preliminary seedling platform (27 (m) in FIGS. 1 and 5 of Patent Document 1) in an intermediate position, and the preliminary seedling platform is arranged in a line. (See FIGS. 3 and 4 of Patent Document 1).

  In this way, by arranging the reserve seedling stands in a line, when the seedlings are supplied from the straw to the seedling rests (15 in FIGS. 3 and 4 of Patent Document 1), the seedlings are forwarded from the straw. It can be supplied to the platform, moved backward in a state where it is placed on the reserve seedling platform, and supplied from the rear reserve seedling platform to the seedling platform. When the supply of seedlings to the seedling platform is completed, the seedlings are placed on each of the preliminary seedling platforms.

JP 2007-282548 A

  In a state where the reserve seedling platforms are arranged in a row, the reserve seedling platforms protrude forward from the aircraft, making it difficult to turn at the shore, etc. A seedling planting operation is performed in a state of being arranged at predetermined intervals in the direction (see FIGS. 1 and 2 of Patent Document 1).

In Patent Document 1, when obtaining a state in which spare seedling platforms are arranged at predetermined intervals in the vertical direction and a state in which the preliminary seedling platforms are arranged in a row, the preliminary seedling platforms are attached to or removed from the support frame. In addition, there is room for improvement in terms of operability because it is necessary to perform an operation of attaching to or removing from the front and rear parts of the reserve seedling table at an intermediate position.
In the riding type rice transplanter, the present invention is configured so that a state in which the preliminary seedling platform is arranged at predetermined intervals in the vertical direction and a state in which the preliminary seedling platform is arranged in a row can be easily obtained. The purpose is that.

[I]
(Constitution)
The first feature of the present invention resides in the following configuration in a riding type rice transplanter.
A link frame is provided on a support frame supported by the machine body so as to be swingable around a horizontal axis in the left-right direction, and a plurality of reserve seedling platforms are supported by the link member.
A first state is set in which the reserve seedling platforms are arranged at predetermined intervals in the vertical direction.
The reserve seedling platform at the uppermost position in the first state is located at the foremost position or the last position, and the reserve seedling platform at one position below the uppermost position in the first state is one of the rearmost position or the last position at the frontmost position. Set the second state in which the reserve seedling platforms are arranged in a row in order from the frontmost stand to the rear or from the last position to the front, starting from the topmost reserve seedling platform, To do.
By swinging the link member, the reserve seedling platform is configured to be operated in the first and second states.
In the second state, the support frame is provided with a link member such that the reserve seedling platform is located near the upper end of the support frame.

The second feature of the present invention resides in the following configuration in the riding type rice transplanter.
A link member is provided on a support frame supported on the lateral side of the machine body so as to be swingable around a horizontal axis in the left-right direction, and a plurality of reserve seedling platforms are supported on the link member in a laterally outward direction.
A first state is set in which the reserve seedling platforms are arranged at predetermined intervals in the vertical direction.
The reserve seedling platform at the uppermost position in the first state is located at the foremost position or the last position, and the reserve seedling platform at one position below the uppermost position in the first state is one of the rearmost position or the last position at the frontmost position. Set the second state in which the reserve seedling platforms are arranged in a row in order from the frontmost stand to the rear or from the last position to the front, starting from the topmost reserve seedling platform, To do.
By swinging the link member, the reserve seedling platform is configured to be operated in the first and second states.
In the second state, the support frame is provided with a link member such that the reserve seedling platform is located near the upper end of the support frame.

(Function)
[I] -1
According to the first feature (second feature) of the present invention, a plurality of reserve seedling platforms are supported on a link member that is swingable around a horizontal axis in the left-right direction, and the link member is swung. The first state in which the preliminary seedling bases are arranged at predetermined intervals in the vertical direction and the preliminary seedling bases are arranged in a line without attaching or removing the preliminary seedling bases to the link member. Two states can be obtained.
Thereby, when obtaining a 1st state and a 2nd state, it is not necessary to perform the operation | work which attaches or removes a reserve seedling stand to a support frame like patent document 1. FIG.

[I] -2
According to the first feature (second feature) of the present invention, for example, as shown in FIG. 3, in the second state, the reserve seedling stands 51 to 54 are located near the upper ends of the support frames 22, 23, 24. . As a result, in the second state, the support frames 22, 23, and 24 do not protrude upward from the preliminary seedling platforms 51 to 54, and the seedlings are placed on the preliminary seedling platforms 51 to 54. The support frames 22, 23, and 24 do not get in the way when the seedlings placed on the reserve seedling platforms 51 to 54 are taken out.

According to the second feature of the present invention, the link frame is provided on the support frame supported on the lateral side portion of the machine body so as to be swingable around the horizontal axis in the left-right direction, and a plurality of reserve seedling platforms are arranged horizontally on the link member. Supports outward.
As a result, for example, as shown in FIGS. 2 and 4, in the first state and the second state, the reserve seedling platforms 51 to 54 do not protrude laterally inward of the support frames 22, 23, 24. When an operator stands on the inner side of the frames 22, 23, and 24, the preliminary seedling raising bases 51 to 54 do not get in the way.

(The invention's effect)
According to the first feature (second feature) of the present invention, in the riding type rice transplanter, the spare seedling platform is placed at a predetermined interval in the vertical direction without attaching or removing the spare seedling platform to the link member. It became possible to easily obtain the arranged first state and the second state in which the reserve seedling platforms were arranged in a row, and the operability of the riding type rice transplanter could be improved.

According to the first feature of the present invention, in the second state, the support frame becomes an obstacle when the seedling is placed on the reserve seedling table or the seedling placed on the reserve seedling table is taken out. The fact that there is no point has improved the workability of the riding rice transplanter.
According to the second feature of the present invention, in the second state, the support frame becomes an obstacle when the seedling is placed on the reserve seedling table or the seedling placed on the reserve seedling table is taken out. In the first state and the second state, when the worker stands on the side inward of the support frame, the workability of the riding type rice transplanter is reduced by the fact that the stand for the preliminary seedling does not get in the way. I was able to improve.

[II]
(Constitution)
The third feature of the present invention resides in the following configuration in the riding type rice transplanter of the first or second feature of the present invention.
In the first state, the link member is provided on the support frame so that the uppermost stand for the preliminary seedling in the first state is positioned above the upper end of the support frame.

(Function)
According to the third feature of the present invention, the “action” described in the preceding item [I] is provided in the same manner as the first or second feature of the present invention. In addition, the following “action” is provided. Yes.
As described in [I] -1 above, when the preliminary seedling stage is operated to the first state, the uppermost position of the preliminary seedling stage in the first state and the upper end of the support frame are substantially the same height. Thus, when a link member is provided in a support frame, the position of the upper end part of a support frame will become high, and the height of a support frame will become high.
According to the third feature of the present invention, the link frame is provided on the support frame so that the uppermost reserve seedling base in the first state is positioned above the upper end of the support frame, and the height of the support frame is Is low.

(The invention's effect)
According to the third 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 or second feature of the present invention. In addition, the following “effect of the invention” is provided. Is provided.
According to the third feature of the present invention, the height of the support frame can be reduced, which is advantageous in terms of simplification and weight reduction of the structure.

[III]
(Constitution)
A fourth feature of the present invention resides in the following configuration in any one of the riding rice transplanters of the first to third features of the present invention.
The right and left lateral sides of the reserve seedling platform are provided with lateral wall portions along the front-rear direction, and the front and rear end portions of the lateral wall portion are configured to open to the right and left laterally outward.

(Function)
According to the 4th characteristic of this invention, it is equipped with the "action" of previous clause [I] [II] similarly to any one of the 1st-3rd characteristics of this invention, and also in addition to this. It has “action” like
According to the 4th characteristic of this invention, the horizontal wall part along the front-back direction is provided in the right and left horizontal side part of the reserve seedling stand. Thus, as described in [I] -2 above, when the preliminary seedling stage is operated to the second state and the seedling is placed on the preliminary seedling stage and moved, the lateral wall portion of the preliminary seedling stage is used. The seedlings rarely fall from the reserve seedling table to the right or left side.

When a seedling moves from one reserve seedling platform to the next reserve seedling platform, it is considered that the right or left corner of the seedling is caught on the end of the lateral wall of the next reserve seedling platform.
According to the 4th characteristic of this invention, it is comprised in the shape which opens the edge part of the side part of a reserve seedling stand to the side outward. As a result, when the reserve seedling stage is operated to the second state as described above and the seedling is placed on the preliminary seedling stage and moved, the seedling moves from one spare seedling stage to the next preliminary seedling stage. At this time, the right or left corner of the seedling is guided inward from the end of the lateral side of the preliminary seedling platform, and the right or left corner of the seedling is It is difficult for a state of being caught at the end of the horizontal wall portion.

(The invention's effect)
According to the fourth aspect of the present invention, the “effect of the invention” described in the preceding paragraphs [I] and [II] is provided in the same manner as any one of the first to third aspects of the present invention. The following “effects of the invention” are provided.
According to the fourth aspect of the present invention, when the reserve seedling platform is operated to the second state and the seedling is placed on the reserve seedling platform and moved, the seedling falls from the reserve seedling platform to the right or left side. Place the seedling on the reserve seedling stand because it is unlikely that the right or left corner of the seedling will be caught on the edge of the horizontal wall of the next reserve seedling stand. It was able to move smoothly, and the workability of the riding type rice transplanter could be improved.

[IV]
(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.
A plurality of seedling support portions projecting upward from the seedling setting surface of the preliminary seedling table are provided at predetermined intervals in the front-rear direction, and the predetermined interval is shorter than the length in the longitudinal direction of the seedlings placed on the preliminary seedling setting table Set things.

(Function)
According to the 5th characteristic of this invention, it is equipped with the "action" as described in previous clause [I] [II] [III] similarly to any one of the 1st-4th characteristics of this invention, In addition, the following “actions” are provided.
According to the fifth feature of the present invention, a plurality of seedling support portions protruding upward from the seedling setting surface of the preliminary seedling setting stand are provided at predetermined intervals in the front-rear direction. Thus, as described in [I] -2 above, when the preliminary seedling platform is operated to the second state and the seedling is moved on the preliminary seedling platform, the entire bottom surface of the seedling is placed on the preliminary seedling platform. Compared to the state of contacting the seedling surface of the stand, the frictional resistance against the movement of the seedling can be reduced, and the seedling can be smoothly moved on the stand of the preliminary seedling.

  In this case, according to the fifth feature of the present invention, the predetermined interval between the seedling support portions of the reserve seedling platform is set to be shorter than the longitudinal length of the seedling placed on the reserve seedling platform. Thereby, a state in which the seedling enters between one seedling support part of the preliminary seedling support stand and the adjacent seedling support part (a state in which any seedling support part of the preliminary seedling support base does not contact the bottom surface of the seedling) Therefore, a state in which any one of the seedling support portions of the preliminary seedling setting table is in contact with the bottom surface of the seedling is obtained.

(The invention's effect)
According to the fifth aspect of the present invention, as in any one of the first to fourth characteristics of the present invention, the apparatus has the “effect of the invention” described in [I] [II] [III] above. In addition to this, the following “effects of the invention” are provided.
According to the fifth aspect of the present invention, when the preliminary seedling stage is operated to the second state and the seedling is placed on the preliminary seedling stage and moved, the frictional resistance against the movement of the seedling can be reduced, and The seedling can be smoothly moved by placing it on the preliminary seedling stand because there is no state where the seedling enters between the one seedling support part and the adjacent seedling support part of the preliminary seedling support base. We were able to improve the workability of the riding rice transplanter.

[1]
As shown in FIG. 1, a six-row planting type seedling planting device 5 is supported by a rear part of a machine body supported by a front wheel 1 and a rear wheel 2 through a link mechanism 3 so as to be movable up and down. The hydraulic cylinder 4 to drive is provided and the riding type rice transplanter is comprised.

  As shown in FIG. 1 and FIG. 2, a bonnet 18 that houses the engine 17 is provided at the front of the aircraft, and a floor 19 is provided between the driver seat 11 and the bonnet 18. A step 20 is provided across the side and the floor 19. An auxiliary step 21 is provided on the right and left lateral sides of the floor 19 and the step 20, and the auxiliary step 21 is configured in a tapered shape that becomes narrower toward the front side in plan view (see FIG. 2).

Next, the seedling planting device 5 will be described.
As shown in FIGS. 1 and 2, the seedling planting device 5 includes four transmission cases 6, a pair of rotation cases 7 that are rotatably supported at the rear part of the transmission case 6, and both ends of the rotation cases 7. A pair of planting arms 8, a plurality of floats 9, a seedling platform 10 that is reciprocally laterally driven in the left-right direction and includes eight seedling mounting surfaces.

  As shown in FIGS. 1 and 2, a hopper 12 for storing fertilizer and four feeding parts 13 corresponding to two planting strips are provided on the rear side of the driver seat 11, A blower 14 is provided on the side. Eight groove forming devices 15 are fixed to the float 9, and eight hoses 16 are connected across the feeding portion 13 and the groove forming device 15.

  As a result, as shown in FIGS. 1 and 2, as the seedling platform 10 is driven to reciprocate laterally to the left and right, the rotary case 7 is rotationally driven, and the planting arm 8 is driven from the lower portion of the seedling platform 10. Alternately take out seedlings A and plant them on the rice field. When the fertilizer is fed from the hopper 12 by a predetermined amount by the feeding unit 13, the fertilizer is supplied to the groove forming device 15 through the hose 16 by the blower 14, and the fertilizer is fed to the rice field through the groove forming device 15. Supplied.

[2]
Next, the support structure of the reserve seedling setting stands 51, 52, 53, 54 will be described.
As shown in FIGS. 1, 2, and 5, a front support frame 22 (corresponding to a support frame) fixed to the lower part of the lateral side portion of the aircraft is extended upward from the lateral outer side near the front end portion of the auxiliary step 21. A rear support frame 23 (corresponding to a support frame) fixed to the lower part of the lateral side portion of the fuselage extends upward from the lateral outer side in the vicinity of the intermediate portion of the auxiliary step 21, and the front and rear support frames 22, A support frame 24 is fixed over the upper portion of 23.

  As shown in FIGS. 6 and 7, the upper portion of the link member 33 is swingably supported around the horizontal axis P <b> 34 in the left-right direction at the front portion of the upper end portion of the support frame 24. The lower part of the link member 32 is swingably supported around the horizontal axis P24 in the left-right direction at the rear part of the unit. In the support frame 24, the position of the horizontal axis P34 is set slightly higher than the position of the horizontal axis P24, and the contact portions 24a and 24b are fixed in the vicinity of the horizontal axes P24 and P34.

As shown in FIGS. 6 and 7, the link member 31 is provided, and the support member 41 extends around the horizontal axis cores P <b> 11 and P <b> 21 in the horizontal direction of the link members 31 and 32 over the upper portions of the link members 31 and 32. Are swingably connected.
The support member 42 swings around the horizontal axis P12, P22, P31 in the horizontal direction of the link members 31, 32, 33 across the lower part of the link member 31, the intermediate part of the link member 32, and the upper part of the link member 33. Connected freely.

  As shown in FIG. 7, the link member 34 is provided, and the support member 43 extends over the lower part of the link member 32, the intermediate part of the link member 33, and the upper part of the link member 34. Are pivotably connected around the horizontal axis P23, P32, P41 in the horizontal direction. A support member 44 is swingably connected around the horizontal axis P33, P42 of the link member 33, 34 in the left-right direction across the lower part of the link member 33, 34.

  As described above, the link members 31 to 34 and the support members 41 to 44 form a four-link mechanism that connects a plurality of pantographs. As shown in FIGS. Preliminary seedling platforms 51 to 54 are supported laterally outward (to the right in FIG. 5 and below in FIG. 6).

[3]
Next, the attachment structure of the reserve seedling platforms 51 to 54 to the support members 41 to 44 will be described.
As shown in FIGS. 6, 7, and 14, the U-shaped bracket 25 is fixed to the front and rear portions of the support members 41 to 44, and the two receiving portions 26 are attached to the front portions of the preliminary seedling raising platforms 51 to 54. Are integrally formed, and two receiving portions 26 are integrally formed at the rear part of the reserve seedling platforms 51 to 54. The upper part of the receiving part 26 at the front part of the preliminary seedling raising bases 51 to 54 is swingably supported around the horizontal axis P1 in the front-rear direction of the bracket 25 at the front part of the support members 41 to 44.

  As shown in FIGS. 13 and 14, openings 25a and 25b are formed in the upper and lower portions of the bracket 25 at the rear of the support members 41 to 44, and the opening 25a is located at an extension line of the horizontal axis P1. ing. Openings 26a and 26b are formed in the upper and lower portions of the receiving portion 26 at the rear of the preliminary seedling raising platforms 51 to 54, respectively.

  As shown in FIGS. 6 and 13, a fixing member 27 formed by bending a round bar into a J-shape is provided, and the fixing member 27 includes an opening 25 a of the bracket 25 at the rear of the support members 41 to 44, a spare member. It penetrates over the opening part 26a of the receiving part 26 of the rear part of the seedling platforms 51-54, and the fixing member 27 is located in the extension line of the horizontal axis P1. As a result, as shown in FIG. 5, the reserve seedling platforms 51 to 54 are swingably supported around the horizontal axis P <b> 1 of the front and rear brackets 25 of the support members 41 to 44.

  The state shown in FIGS. 5, 13, and 14 is a state in which the reserve seedling platforms 51 to 54 are operated in a horizontal use posture (see the solid line in FIG. 5). The portion 40 is in contact with the bracket 25 of the support members 41 to 44, and the reserve seedling platforms 51 to 54 do not swing downward beyond the use posture.

  As shown in FIGS. 13 and 14, a stopper 27 b is fixed to the tip 27 a of the fixing member 27, and a spring 28 that urges the fixing member 27 rightward in FIG. 13 is attached to the fixing member 27. ing. In the state shown in FIGS. 13 and 14, the distal end portion 27 a of the fixing member 27 is inserted into the opening portion 26 b of the receiving portion 26 of the reserve seedling platforms 51 to 54 and the opening portion 25 b of the bracket 25 of the support members 41 to 44. In this state, the stopper 27b of the fixing member 27 is in contact with the receiving portion 26 of the reserve seedling platforms 51 to 54, and in this state, the reserve seedling platforms 51 to 54 are held in a use posture (preliminary seedlings). A state where the mounting bases 51 to 54 do not swing upward beyond the use posture).

As shown by a two-dot chain line in FIG. 13, the fixing member 27 is slid to the left in FIG. 13 against the urging force of the spring 28, and the tip 27a of the fixing member 27 is placed on the preliminary seedling platforms 51-54. By pulling out from the opening 26b of the receiving part 26 and the opening 25b of the bracket 25 of the support members 41 to 44, the reserve seedling platforms 51 to 54 are retracted upward (see the two-dot chain lines in FIGS. 5 and 14). ) Can be operated.
As described above, the use of the reserve seedling platforms 51 to 54 and the operation to the storage position are performed in both the first state and the second state of the reserve seedling platforms 51 to 54 described in [4] and [5] described later. Can be done.

[4]
Next, the operation from the first state to the second state of the first state and the second state and the reserve seedling platforms 51 to 54 will be described.
As shown in FIGS. 5, 6, and 7, an arched handle 29 is fixed to the upper portion of the support member 41. As shown in FIGS. 7 and 12A, the support shaft 30 is fixed to the front portion of the support member 41 along the front-rear direction, and the operation member 35 having a U-shaped cross section is swingable around the support shaft 30. The operation lever 36 is fixed to the operation member 35, and the operation lever 36 is disposed along the handle 29.

  As shown in FIGS. 6, 7, and 12 (a), an opening is formed in the extension 41 a at the lower part of the front portion of the support member 41, and the connecting pin extends along the opening of the extension 41 a of the support member 41. 37 is slidably supported in the left-right direction. The lower part of the operation member 35 is connected to the connecting pin 37, and a spring 38 is attached to the support shaft 30, and the operation member 35 is rotated around the support shaft 30 by the spring 38 in the counterclockwise direction of FIG. 37 is biased in the direction of moving rightward in FIG.

  The state shown in FIGS. 1, 5, and 7 shows a state in which the preliminary seedling platforms 51 to 54 are operated to the first state arranged at predetermined intervals in the vertical direction, as shown in FIG. 12 (a). In this state, the connecting pin 37 is inserted into the connecting hole 32 c of the link member 32. In the first state, the uppermost reserve seedling platform 51 and the lowermost preliminary seedling platform 52 are positioned above the upper ends of the front and rear support frames 22, 23 and the support frame 24. ing.

  As shown in FIGS. 1 and 7, in the first state, the link members 31 to 34 are obliquely upward in a parallel state, and the link member 32 contacts the contact portion 24 a of the support frame 24. The link member 33 is in contact with the contact portion 24b of the support frame 24, and the support members 41 to 44 (preliminary seedling platforms 51 to 54) are substantially horizontal (or slightly lowered from the horizontal posture). It has become. As shown in FIGS. 7 and 12 (a), by inserting the connecting pin 37 into the connecting hole 32c of the link member 32, the positional relationship between the support member 41 and the link member 32 (centering on the horizontal axis P21). Since the angle between the support member 41 and the link member 32 is fixed, the reserve seedling stands 51 to 54 (the link members 31 to 34 and the support members 41 to 44) are held in the first state.

  As shown in FIGS. 1 and 7, for example, when an operator standing on the floor 19 holds the handle 29 by hand and operates the operation lever 36 together, the operation member 35 is moved around the support shaft 30 in FIG. ), The connecting pin 37 is pulled out of the connecting hole 32c of the link member 32. When the operator operates the handle 29 rearward in this state, as shown in FIGS. 1 and 7 to 3 and 4, the link members 32 and 33 are rotated around the horizontal axes P 24 and P 34 in the clockwise direction of FIG. As a result, the link members 31 and 34 are swung in the clockwise direction in FIG. 7 around the horizontal axis P12 and P42.

  As shown in FIG. 1 and FIG. 7 to FIG. 3 and FIG. 4, the preliminary seedling setting bases 51 and 52 move rearward and downward, and the preliminary seedling setting bases 53 and 54 move forward and upward. 34 are in a state where they overlap each other, the preliminary seedling platform 51 is located at the last position, the preliminary seedling platform 52 is positioned in front of the preliminary seedling platform 51, and the preliminary seedling platform 53 is the preliminary seedling. The stand 52 is positioned on the front side of the setting stand 52, and the reserve seedling stand 54 is positioned at the foremost position.

  Thereby, as shown in FIG.3 and FIG.4, the 2nd state which has arrange | positioned the reserve seedling platforms 51-54 in a line form is obtained. In the second state, reserve seedling platforms 51 to 54 are positioned near the upper ends of the front and rear support frames 22a and 23 and the support frame 24, and as shown in FIG. The left and right intervals between the right and left spare seedling raising platforms 54 are smaller than the 51 left and right intervals. In this case, as shown in FIG. 3, the preliminary seedling platform 54 is slightly above the upper ends of the front and rear support frames 22 and 23 and the support frame 24, and the preliminary seedling platform 51 is the front and rear support frames 22. , 23 are located slightly below the upper end of the support frame 24.

  As shown in FIGS. 3, 4, and 8, when the reserve seedling platforms 51 to 54 are operated to the second state, the connection pin 37 comes to a position facing the connection hole 31 c of the link member 31, so When released, the connecting member 35 is swung in the counterclockwise direction in FIG. 12A around the support shaft 30 by the biasing force of the spring 38, and the connecting pin 37 is inserted into the connecting hole 31 c of the link member 31. . As a result, the positional relationship between the support member 41 and the link member 31 (the angle between the support member 41 and the link member 31 with the horizontal axis P11 as the center) is in a fixed state. (Link members 31 to 34 and support members 41 to 44) are held in the second state.

[5]
Next, the operation from the second state to the first state of the preliminary seedling raising platforms 51 to 54 will be described.
As shown in FIGS. 3 and 4, in the second state, for example, when an operator standing on the floor 19 holds the handle 29 by hand and operates the operation lever 36 together, the operation member 35 moves around the support shaft 30. Then, the connecting pin 37 is pulled out from the connecting hole 31 c of the link member 31 by being operated counterclockwise in FIG. When the operator operates the handle 29 forward in this state, as shown in FIGS. 3 and 4 to 1 and 7, the link members 32 and 33 are rotated around the horizontal axes P24 and P34 in the counterclockwise direction of FIG. As a result, the link members 31 and 34 are swung counterclockwise around the horizontal axis P12 and P42.

  As shown in FIG. 3 and FIG. 4 to FIG. 1 and FIG. 7, the preliminary seedling setting bases 51 and 52 are moved forward and upward, and the preliminary seedling setting bases 53 and 54 are moved downward and downward. 34 are parallel to each other and are obliquely upward, the link members 32 and 33 are in contact with the contact portions 24a and 24b of the support frame 24, and the support members 41 to 44 (preliminary seedling platforms 51 to 54) are parallel to each other. In the state, it becomes substantially horizontal (or a slightly lowered posture from the horizontal), the reserve seedling platform 51 is located at the uppermost position, the reserve seedling platform 52 is located one lower side of the preliminary seedling platform 51, The reserve seedling platform 53 is positioned below the preliminary seedling platform 52 and the preliminary seedling platform 54 is positioned at the lowest position.

After operating the reserve seedling platforms 51 to 54 from the second state to the first state, the hand is released from the operation lever 36 and the connection pin 37 is inserted into the connection hole 32c of the link member 32, so 54 is held in the first state.
However, if the hand is released from the operation lever 36 before the preliminary seedling raising bases 51 to 54 are completely operated to the first state, the connection pin 37 is connected to the connection hole of the link member 32 as shown in FIG. It moves to the right of the paper surface of FIG. 12 (b) before reaching the position facing 32c, and the connecting pin 37 is in a state of getting on the link member 32, so that the preliminary seedling raising platforms 51 to 54 cannot be operated to the first state. It becomes a state.

  In this case, as shown in FIG. 6 and FIG. 7, the connecting pin 37 is provided on the uppermost stand for the seedling 51 (supporting member 41) in the first state. For example, the operation of standing on the floor 19 is based on the point (exposed) that is located (exposed) on the inner side (the upper side in FIG. 6 and the right side in FIG. 7) and the connecting pin 37 is located (exposed) on the upper side of the link member 32. It is easy for a person to visually check the state of the connecting pin 37. Accordingly, for example, an operator standing on the floor 19 can easily recognize that the reserve seedling platforms 51 to 54 are not completely operated to the first state.

  When the spare seedling platforms 51 to 54 are operated from the first state to the second state, when the preliminary seedling platforms 51 to 54 are completely operated to the second state, when the hand is released from the operation lever 36, FIG. As shown in (b), before the connecting pin 37 reaches the position facing the connecting hole 31 c of the link member 31, the connecting pin 37 moves to the right in FIG. 12B and the connecting pin 37 gets on the link member 31. Thus, the reserve seedling platforms 51 to 54 cannot be operated to the second state.

  In this case, as shown in FIG. 3 and FIG. 4, the connecting pin 37 is provided on the reserve seedling stand 51 (supporting member 41) at the last position in the second state. For example, the operation of standing on the floor 19 is based on the point that it is located (exposed) on the inner side of the machine (the upper side in FIG. 6 and the right side in FIG. 7) and the connecting pin 37 is located (exposed) on the upper side of the link member 31. It is easy for a person to visually check the state of the connecting pin 37. Thereby, for example, an operator standing on the floor 19 can easily recognize that the reserve seedling platforms 51 to 54 are not completely operated to the second state.

[6]
Next, the reserve seedling platform 51 will be described.
As shown in FIG. 6, the preliminary seedling setting table 51 includes a flat seedling setting surface 39, a lateral wall portion 40 along the front-rear direction of the right and left lateral sides of the seedling setting surface 39, and the item [3]. Receiving portion 26, notch portions 45 formed at the front and rear end portions of seedling setting surface 39, and six freely rotatable rollers 46 provided on seedling setting surface 39 (corresponding to a seedling supporting portion) Etc. are provided. The front and rear end portions 40a of the horizontal wall portion 40 of the preliminary seedling raising stand 51 are configured to open to the right and left laterally outward. The interval L3 between the rollers 46 is set to be shorter than the length L1 of the seedling A (seedling box 56) in the longitudinal direction.

  As shown in FIGS. 5 and 6, an inverted U-shaped stopper 47 is fixed to a portion of the rear surface of the seedling setting surface 39 opposite to the support member 41. As shown in FIGS. 6, 9 (a) and 10 (a), a blocking member 48 formed by bending a round bar is provided at the lower portion of the preliminary seedling platform 51, and is provided at the lower portion of the preliminary seedling platform 51. A blocking member 48 is swingably supported around the horizontal axis P2 in the left-right direction, and one end of the blocking member 48 is bent in an inverted U shape to form a stopper 48a. A stop portion 48a faces from the lower side to the opening 39a in the front portion of the support member 41 side.

  As shown in FIGS. 6, 9 (a), 10 (a), and 11, when the support member 41 is swingably connected around the horizontal axis P <b> 11 of the link member 31, the support shaft 31 a is attached to the link member 31. The support member 41 is swingably connected around the support shaft 31a (horizontal axis P11) of the link member 31. The other end of the blocking member 48 extends to the position of the support shaft 31 a of the link member 31, and the roller 48 b is rotatably supported by the other end of the blocking member 48.

  As shown in FIGS. 6, 9 (a), 10 (a), and 11, the cam member 31 b is fixed to the support shaft 31 a of the link member 31, and the blocking member 48 is arranged around the horizontal axis P <b> 2 in FIG. A spring 50 that biases counterclockwise on the paper surface is provided. The spring 50 biases the stopper 48a of the blocking member 48 downward, and the roller 48b of the blocking member 48 is biased upward to It is pressed by the cam member 31b.

[7]
Next, the reserve seedling platforms 52 and 53 will be described.
As shown in FIG. 9B and FIG. 10B, the preliminary seedling setting bases 52 and 53 are similar to the preliminary seedling setting base 51 in the seedling setting surface 39, the lateral wall portion 40, the receiving portion 26, and the cutout portion. 45, a roller 46 (corresponding to a seedling support part), and the like.

  As shown in FIGS. 9 (b) and 10 (b), a blocking member 49 formed by bending a round bar is provided below the reserve seedling platforms 52 and 53, so that the preliminary seedling platforms 52 and 53 are provided. A blocking member 49 is swingably supported around the horizontal axis P3 in the left-right direction at the lower part of the frame. One end of the blocking member 49 is bent in an inverted U shape to form a stopper 49a. The stopper 49a is formed in the opening 39a on the support member 42, 43 side on the rear side of the seedling setting surface 39. Looking from below.

  As shown in FIG. 9B and FIG. 10B, a blocking member 48 formed by bending a round bar is provided at the lower part of the reserve seedling platforms 52 and 53, so that the preliminary seedling platforms 52 and 53 are provided. A blocking member 48 is swingably supported around a horizontal axis P4 in the left-right direction at the lower part of the frame. One end of the blocking member 48 is bent in an inverted U shape to form a stopper 48a, and the stopper 48a is formed in the opening 39a on the support member 42, 43 side of the front part of the seedling setting surface 39. Is facing from below.

  As shown in FIGS. 9 (b), 10 (b) and 11, when the support members 42 and 43 are swingably connected around the horizontal axes P22 and P32 of the link members 32 and 33, the link members 32 and Support shafts 32a and 33a are fixed to 33, and support members 42 and 43 are swingably connected around support shafts 32a and 33a (horizontal shaft cores P22 and P32) of the link member 31. The other end of the blocking member 49 extends to the position of the support shafts 32a and 33a of the link members 32 and 33, and the roller 49b is rotatably supported by the other end of the blocking member 49.

  As shown in FIGS. 9B, 10B, and 11, the cam members 32b and 33b are fixed to the support shafts 32a and 33a of the link members 32 and 33, and are fixed to the other end of the blocking member 48. The linkage metal 48 c is connected to the vicinity of the roller 49 b of the blocking member 49. A spring 50 for urging the blocking member 49 around the horizontal axis P3 in the clockwise direction in FIG. 10B is provided, and the stoppers 48a and 49a of the blocking members 48 and 49 are urged downward by the spring 50. The roller 49b of the blocking member 49 is urged upward and is pressed against the cam members 32b and 33b of the link members 32 and 33.

[8]
Next, the reserve seedling table 54 will be described.
As shown in FIGS. 9 (c) and 10 (c), the preliminary seedling setting table 54 is similar to the preliminary seedling setting tables 51, 52, 53, and the seedling setting surface 39, the lateral wall portion 40, the receiving portion 26, and the cutting portion 26 are cut. A notch part 45, a roller 46 (corresponding to a seedling support part) and the like are provided.

  As shown in FIGS. 9 (c) and 10 (c), an inverted U-shaped stopper 55 (see FIG. 5) is fixed to the front portion of the seedling setting surface 39 on the side opposite to the support member 44. Has been. A blocking member 49 formed by bending a round bar is provided at the lower part of the reserve seedling table 54 so that the blocking member 49 can swing around the horizontal axis P5 in the left-right direction at the lower part of the preliminary seedling table 54. A stopper 49a is formed by bending one end of the blocking member 49 into an inverted U shape, and a stopper is formed in the opening 39a on the rear side of the seedling surface 39 on the side of the supporting member 44. 49a faces from below.

  9C, 10C, and 11, when the support member 44 is swingably connected around the horizontal axis P42 of the link member 34, the support shaft 34a is fixed to the link member 34. A support member 44 is swingably connected around the support shaft 34a (horizontal axis P42) of the link member 34. The other end of the blocking member 49 extends to the position of the support shaft 34 a of the link member 34, and the roller 49 b is rotatably supported by the other end of the blocking member 49.

  As shown in FIGS. 9 (c), 10 (c) and 11, the cam member 34b is fixed to the support shaft 34a of the link member 34, and the blocking member 49 is moved around the horizontal axis P5 in FIG. 10 (c). A spring 50 that biases in the direction is provided. The spring 50 biases the stopper 49a of the blocking member 49 downward, and the roller 49b of the blocking member 49 is biased upward to cam the cam member 34b of the link member 34. Is pressed.

[9]
Next, the supply of seedlings to the seedling raising table 10 and the spare seedling raising tables 51 to 54 will be described.
As shown in FIG. 15A, the seedling A is generally grown in a mat shape in a seedling box 56 made of synthetic resin. First, when the seedling A is supplied to the seedling platform 10, after setting the direction of the aircraft so that the front end of the aircraft is in contact with the heel, as shown in FIG. 3 and FIG. Operate in 2 states.

  As shown in FIGS. 9 (a) to 10 (c), as the preliminary seedling platforms 51 to 54 are operated to the first and second states, the preliminary seedling platforms 51 to 54 and the link members 31 to 34 are operated. The support shafts 31a to 34a rotate relative to each other, and the cam members 31b to 34b of the link members 31 to 34 rotate with respect to the rollers 48b and 49b of the blocking members 48 and 49.

  Accordingly, as shown in FIGS. 9 (a) to 10 (c), when the preliminary seedling platforms 51 to 54 are operated to the second state, the cam members 31b to 34b of the link members 31 to 34 cause the blocking members 48, 49, the rollers 48b, 49b are not pushed downward, and the stoppers 48a, 49a of the blocking members 48, 49 are operated to the retracted posture where they enter the opening 39a of the seedling raising surface 39 of the preliminary seedling raising platforms 51-54. (Refer to the two-dot chain lines in FIGS. 10A, 10B, and 10C).

  As shown in FIGS. 3, 4, and 15 (a), in the state where the preliminary seedling platform 51 to 54 is operated to the second state, the cocoon operator puts the seedling A (seedling box 56) on the preliminary seedling platform 54. The seedling A (seedling box 56) is moved backward in a state of being placed on the preliminary seedling platform 51 to 54, and the seedling A (seedling box 56) is brought into contact with the stop 47 of the preliminary seedling platform 51. The operator of the floor 19 takes out the seedling A (seedling box 56) from the reserve seedling stage 51 and supplies the seedling A to the seedling stage 10.

  As shown in FIGS. 3 and 15 (a), in the second state, in the state where the seedling A (seedling box 56) is not placed on the preliminary seedling raising bases 51-54, the preliminary seedling raising bases 51-54 Each of them is in a slightly lowered state, and a slight level difference is generated between the reserve seedling platform 54 and the reserve seedling platform 53 (the reserve seedling platform 54 is on the high side and the reserve seedling platform 53 is on the low side). There is a slight difference between the setting table 53 and the reserve seedling setting table 52 (the reserve seedling setting table 53 is on the high side and the reserve seedling setting table 52 is on the low side). There is a slight level difference (the reserve seedling platform 52 is on the high side and the reserve seedling platform 51 is on the low side), and the preliminary seedling platforms 51 to 54 are in a slightly lowered state as a whole. In the second state of the preliminary seedling platforms 51 to 54, the upper ends of the front and rear support frames 22, 23 and the support frame 24 and the upper ends of the preliminary seedling platforms 52, 53 are substantially the same height (or the support frame 24). The upper end portions of the preliminary seedling raising bases 52 and 53 are slightly higher than the upper end portion of the first seed portion).

  Thus, as shown in FIGS. 3, 4, and 15 (a), when the seedling A (seedling box 56) is moved backward in a state of being placed on the reserve seedling platforms 51 to 54, the seedling A (seedling box 56) When the seedling A (seedling box 56) moves from the spare seedling platform 54 to the spare seedling platform 53, the seedling A (seedling box 56) moves from the preliminary seedling platform 53 to the preliminary seedling platform 52. When moving from 52 to the reserve seedling platform 51, the bottom of the seedling A (seedling box 56) is not caught on the reserve seedling platform 53 (52, 51).

  As shown in FIG. 6, when the seedling A (the seedling box 56) is moved backward in a state of being placed on the preliminary seedling setting platforms 51 to 54, the front and rear ends of the lateral wall portion 40 of the preliminary seedling setting platform 51. When the seedling A (seedling box 56) moves from the reserve seedling stage 54 to the preliminary seedling stage 53, the seedling A (seedling box 56) ) Moves from the reserve seedling platform 53 to the reserve seedling platform 52, when the seedling A (seedling box 56) moves from the reserve seedling platform 52 to the preliminary seedling platform 51, the right side of the seedling A (seedling box 56) or The left corner is not caught by the end 40a of the right or left lateral wall 40 of the reserve seedling platform 53 (52, 51).

As shown in FIGS. 3, 4, and 15 (a), when the seedling A (seedling box 56) is moved backward in a state of being placed on the reserve seedling platforms 51 to 54, the bottom of the seedling A (seedling box 56) is It moves smoothly on the roller 46.
In this case, as shown in FIG. 6, the interval L <b> 3 between the rollers 46 is set to be shorter than the length L <b> 1 in the longitudinal direction of the seedling A (the seedling box 56). Any roller 46 is in contact with the bottom of the seedling A (seedling box 56) without A (seedling box 56) entering. This state includes a roller 46 at the rear of the preliminary seedling table 54 and a roller 46 at the front of the preliminary seedling table 53, a roller 46 at the rear of the preliminary seedling table 53 and a roller 46 at the front of the preliminary seedling table 52, This also occurs in the roller 46 at the rear of the preliminary seedling table 52 and the roller 46 at the front of the preliminary seedling table 51.

[10]
When the operation described in the preceding item [9] is performed and the supply of the seedlings to the seedling setting table 10 is completed, the seedling A (the seedling box 56) is then placed on the preliminary seedling setting tables 51 to 54.
In the state in which the preliminary seedling platforms 51 to 54 are operated to the second state, as shown in FIG. 15B, the four seedlings A (the seedling boxes 56) are placed on the preliminary seedling platforms 51 to 54, Out of these, the previous three seedlings A (seedling box 56) are packed forward and moved to contact with the stop 55 of the reserve seedling setting base 54, and the subsequent one seedling A (seedling box 56) is attached. It is moved rearward and brought into contact with the stop 47 of the reserve seedling platform 51.

  As shown in FIGS. 6 and 15 (a), the length L2 in the longitudinal direction of the reserve seedling platforms 51 to 54 is set to be longer than the length L1 in the longitudinal direction of the seedling A (seedling box 56). ing. As a result, as shown in FIG. 15 (b), the seedling A (seedling box 56) is moved from the rear part (right side of the paper surface of FIG. 15 (b)) to the front side (FIG. 15 (b)). The state where the seedling A (seedling box 56) enters the rear side (the right side of the paper in FIG. 15B) from the front part (the left side of the paper in FIG. 15B) of the reserve seedling platform 51. It becomes.

  In the state shown in FIG. 15 (b), as shown in FIG. 15 (c), when the preliminary seedling raising bases 51 to 54 start to be operated from the second state to the first state, the link members 32 and 33 become the horizontal axis. As shown in FIG. 15C, the link members 31 and 34 are swung around the horizontal axes P12 and P42 in the counterclockwise direction of FIG. 15C. Swing operation is performed. Thereby, the reserve seedling platforms 51 and 52 are moved forward and upward, and the preliminary seedling platforms 53 and 54 are moved rearward and downward.

As shown in FIG.15 (c), in the state in the middle of operating the reserve seedling platform 51-54 from a 2nd state to a 1st state, the rear part (see figure) of the seedling A (seedling box 56) of the reserve seedling platform 54 15 (c) on the right side of the paper surface) and the front portion of the reserve seedling platform 53 (left side of the paper surface in FIG. 15 (c)) approach each other. The rear part of the seedling A (seedling box 56) of the preliminary seedling stage 53 (upper right side of the drawing in FIG. 15C) and the front part of the preliminary seedling setting stage 52 (left side of the drawing in FIG. 15C) approach each other. . The rear part of the seedling A (seedling box 56) of the preliminary seedling stage 52 (upper right side of the drawing in FIG. 15C) and the front part of the preliminary seedling setting stage 51 (left side of the drawing in FIG. 15C) approach each other. .

  In this case, as shown in FIGS. 6 and 15 (a), the length L2 in the longitudinal direction of the reserve seedling platforms 51 to 54 is longer than the length L1 in the longitudinal direction of the seedling A (the seedling box 56). The seedling A (seedling box 56) is placed on the front side (left side of the paper in FIG. 15C) from the rear set point 52, 53, 54 (right side of the paper in FIG. 15C). The point where the seedling enters, the seedling A (seedling box 56) enters the rear side (right side of the paper in FIG. 15C) from the front part (left side of the paper in FIG. 15C) of the preliminary seedling setting stand 51. Depending on the point, the rear part of the seedling A (seedling box 56) of the preliminary seedling bed 54 (upper right side of the drawing in FIG. 15C) and the front part of the preliminary seedling setting table 53 (left side of the drawing in FIG. 15C) Is avoided. The contact between the rear part of the seedling A (seedling box 56) of the preliminary seedling platform 53 (upper right side of the paper in FIG. 15C) and the front part of the preliminary seedling platform 52 (left side of the paper in FIG. 15C) Avoided. The contact between the rear part of the seedling A (seedling box 56) of the preliminary seedling stage 52 (upper right side of the drawing in FIG. 15C) and the front part of the preliminary seedling setting stage 51 (left side of the drawing in FIG. 15C) Avoided (even if contacted, the seedling A will not be injured).

  As shown in FIGS. 9 (a) to 10 (c), when the reserve seedling platforms 51 to 54 start to be operated from the first state to the second state, they are blocked by the cam members 31b to 34b of the link members 31 to 34. The rollers 48b and 49b of the members 48 and 49 are pushed downward, and the stoppers 48a and 49a of the blocking members 48 and 49 protrude upward from the opening 39a of the seedling setting surface 39 of the preliminary seedling setting bases 51 to 54. The operation posture is operated at an early stage (see the solid lines in FIGS. 10A, 10B, and 10C).

  Thus, when the preliminary seedling platforms 51 to 54 are operated to the first state, the stopping portion 48a of the blocking member 48 lifts the seedling A (seedling box 56) of the preliminary seedling mounting bases 52 and 53 from below. Therefore, as shown in FIG. 15 (d), the operator of the floor 19 pushes the seedling A (seedling box 56) with his / her hand, and the stop portions 48a of the blocking members 48, 49 in the preliminary seedling setting bases 52, 53 are obtained. 49a.

[11]
When the operation described in the previous item [10] is performed and the seedling A (seedling box 56) is placed on the preliminary seedling raising platforms 51 to 54, and the preliminary seedling raising platforms 51 to 54 are operated to the first state, As shown in the description in [10] above and FIG. 15 (d), the seedling A (seedling box 56) is placed between the stop portions 48 a and 49 a of the blocking members 48 and 49 on the preliminary seedling placing bases 52 and 53. It is assumed that the stopper 51 is positioned between the stoppers 48 a and 47 of the blocking member 48 and between the stoppers 49 a and 55 of the blocking member 49 of the preliminary seedling setting base 54.

  In the state shown in FIG. 15 (d), when the preliminary seedling platforms 51 to 54 are operated from the first state to the second state, as shown in the preceding item [10] and as shown in FIG. 15 (c), the preliminary seedling platforms The rear part of 54 seedlings A (seedling box 56) (the upper part on the right side of the paper in FIG. 15C) and the front part of the reserve seedling platform 53 (the left side of the paper in FIG. 15C) approach each other. The rear part of the seedling A (seedling box 56) of the preliminary seedling stage 53 (upper right side of the drawing in FIG. 15C) and the front part of the preliminary seedling setting stage 52 (left side of the drawing in FIG. 15C) approach each other. . The rear part of the seedling A (seedling box 56) of the preliminary seedling stage 52 (upper right side of the drawing in FIG. 15C) and the front part of the preliminary seedling setting stage 51 (left side of the drawing in FIG. 15C) approach each other. .

  In this case, the seedling A (seedling box 56) is between the stoppers 48a and 49a of the blocking members 48 and 49 in the preliminary seedling table 52 and 53, and the stoppers 48a and 47a of the blocking member 48 in the preliminary seedling table 51. Between the stop portion 49a and the stop portion 55 of the blocking member 49 in the reserve seedling table 54, the front portion of the seedling A (the seedling box 56) is placed on the reserve seedling platforms 51 to 54. The rear part of the seedling A (seedling box 56) is located on the front side from the rear part of the reserve seedling platforms 51 to 54.

  Thus, in FIG. 15 (c), the rear part of the seedling A (seedling box 56) of the preliminary seedling stage 54 (upper right portion of FIG. 15 (c)) and the front part of the preliminary seedling stage 53 (FIG. 15 (c)). Contact with c) on the left side of the drawing is avoided. The contact between the rear part of the seedling A (seedling box 56) of the preliminary seedling platform 53 (upper right side of the paper in FIG. 15C) and the front part of the preliminary seedling platform 52 (left side of the paper in FIG. 15C) Avoided. The contact between the rear part of the seedling A (seedling box 56) of the preliminary seedling stage 52 (upper right side of the drawing in FIG. 15C) and the front part of the preliminary seedling setting stage 51 (left side of the drawing in FIG. 15C) Avoided.

[First Alternative Embodiment of the Invention]
Instead of the above-mentioned [Best Mode for Carrying Out the Invention], a configuration as shown in FIG. 16 may be used.
As shown in FIG. 16, the link members 31 to 34 may be arranged in the reverse direction in a side view. When configured in this manner, the support member 44 includes the handle 29, the operation lever 36, and the connecting pin 37.

  Accordingly, as shown in FIG. 16, when the preliminary seedling platforms 51 to 54 are operated from the first state to the second state, the preliminary seedling platforms 51 and 52 are moved forward and downward, and the preliminary seedling platforms 53 and 54 are placed. , The preliminary seedling platform 51 is positioned at the foremost position, the preliminary seedling platform 52 is positioned one rear side of the preliminary seedling platform 51, and the preliminary seedling platform 53 is placed on the preliminary seedling platform. The stand 52 is located one rear side of the stand 52, and the reserve seedling stand 54 is located at the last position.

[Second Embodiment of the Invention]
Instead of the roller 46 of the above-mentioned [Best Mode for Carrying Out the Invention] [First Another Mode of Carrying Out the Invention], a fixed protrusion protruding upward from the seedling raising surface 39 of the preliminary seedling raising bases 51 to 54. A portion (not shown) (corresponding to the seedling support portion) may be integrally formed on the seedling raising surface 39 of the preliminary seedling raising tables 51 to 54.
The present invention can be applied not only to the four reserve seedling platforms 51 to 54 but also to the three preliminary seedling platforms 51, 52, 53.

Overall side view of the riding rice transplanter with the reserve seedling stand in the first state Overall plan view of the riding rice transplanter with the reserve seedling stand operated to the first state Overall side view of riding type rice transplanter with spare seedling table in second state Overall plan view of a riding type rice transplanter in a state where the reserve seedling table is operated to the second state Front view of the spare seedling platform with the spare seedling platform in the first state Top view of the reserve seedling platform with the reserve seedling platform operated to the first state Side view of the reserve seedling platform with the reserve seedling platform operated to the first state Side view of the reserve seedling platform with the reserve seedling platform operated to the second state Plan view of the vicinity of the blocking member in the reserve seedling table Longitudinal side view in the vicinity of the blocking member on the reserve seedling table Longitudinal front view near the support shaft of the link member in the reserve seedling table (A) A longitudinal front view of the vicinity of the handle and the operating lever in the preliminary seedling stage with the preliminary seedling stage held in the first state, (b) before fully operating the preliminary seedling stage in the first state A vertical front view of the vicinity of the handle and the control lever in the reserve seedling stand with the hand released from the control lever, Longitudinal side view showing the structure for attaching the seedling stand to the support member Longitudinal front view showing the structure for mounting the seedling stand to the support member Side view showing the process of operating the reserve seedling platform from the second state to the first state and from the first state to the second state The side view of the reserve seedling stand in 1st another form of implementation of invention

Explanation of symbols

22, 23, 24 Support frame 31, 32, 33, 34 Link member 39 Surface of the seedling of the preliminary seedling table 40 Side wall part of the preliminary seedling table 40 a Front side and rear end of the horizontal wall part of the preliminary seedling table 46 Seedling support part 51,52,53,54 Reserve seedling stand A Seedling

Claims (5)

A support frame supported by the machine body is provided with a link member so as to be swingable around a horizontal axis in the left-right direction, and a plurality of reserve seedling platforms are supported on the link member,
A first state in which the preliminary seedling table is arranged at predetermined intervals in the vertical direction;
The uppermost reserve seedling platform in the first state is positioned at the foremost position or the last position, and the preliminary seedling platform one level lower than the uppermost position in the first state is one rearward or the last position of the frontmost position. The spare seedling platform is arranged in a row in a row from the frontmost position to the rear side or from the last position to the front side in order from the topmost preliminary seedling platform. Set two states
By swinging the link member, the reserve seedling table is configured to be freely operated in the first and second states,
The riding type rice transplanter in which the link member is provided on the support frame so that a reserve seedling table is positioned near the upper end of the support frame in the second state. A support frame supported on the lateral side of the machine body is provided with a link member that can swing around a horizontal axis in the left-right direction, and a plurality of reserve seedling platforms are supported laterally outward on the link member. ,
A first state in which the preliminary seedling table is arranged at predetermined intervals in the vertical direction;
The uppermost reserve seedling platform in the first state is positioned at the foremost position or the last position, and the preliminary seedling platform one level lower than the uppermost position in the first state is one rearward or the last position of the frontmost position. The spare seedling platform is arranged in a row in a row from the frontmost position to the rear side or from the last position to the front side in order from the topmost preliminary seedling platform. Set two states
By swinging the link member, the reserve seedling table is configured to be freely operated in the first and second states,
The riding type rice transplanter in which the link member is provided on the support frame so that a reserve seedling table is positioned near the upper end of the support frame in the second state.   3. The support frame according to claim 1, wherein in the first state, the link member is provided on the support frame such that the uppermost stand for the preliminary seedling in the first state is positioned above the upper end of the support frame. Riding rice transplanter.   The right and left lateral sides of the reserve seedling table are provided with lateral wall portions along the front-rear direction, and the front and rear end portions of the lateral wall portion are configured to open to the right and left lateral outwards. The riding type rice transplanter as described in any one of Claims 1-3. A plurality of seedling support portions protruding upward from the seedling setting surface of the preliminary seedling setting table are provided at predetermined intervals in the front-rear direction,
The riding type rice transplanter according to any one of claims 1 to 4, wherein the predetermined interval is set to be shorter than a length in a longitudinal direction of a seedling placed on a stand for a preliminary seedling.

Images