JP3304565B2 - Rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter having a structure in which the right and left widths of a seedling planting machine are reduced.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Unexamined Patent Publication No. Hei 4-66008, in a rice transplanter configured such that the left and right width of a seedling planting machine 4 can be reduced, the right and left sides of the seedling planting machine are provided. The left and right ends of a support rail (lower guide rail) for receiving the lower end of the seedling placed on the seedling mounting table so that the left and right outer strips of the reciprocating seedling mounting table can be moved to the left and right inside. part of providing foldably to the left and right inner support les - le of the left and right outside the support situated Les - Le left and right end portions of the gas - sul Le - Ruga - de in fold fold permit (side bumper) in the left-right inside There was a rice transplanter. Then, this conventional rice transplanter, the support les - with de of <br/> provided in fold fold direction in a direction intersecting the side view - Le left and right ends and the les - Ruga
In fold fold when the support les - Les outside Le left and right end portions - Ruga - was provided so as to fold in a state overlapping the de.

[0003]

THE INVENTION Problems to be Solved by conventional rice transplanter, the support Le - Fold Ri fold Le left and right ends earlier, following the Le - Ruga -
It has become in fold collapse as the de. Thus, the support rail
Le left and right ends and Re - Ruga - since de of in fold fold to have the order, there is a risk that wrong front and rear steps, unless notice mistake procedures temporary unable reduced to a predetermined lateral width, a desired efficiency It cannot be obtained. In addition, since the rail is folded so as to overlap the outer sides of the right and left ends of the support rail, the left and right positions of the rail guard are inevitably supported when the width of the rail is reduced. It will be located on the left and right sides of the rail on both sides. Therefore, lateral width which can be reduced in support les when tatami Ri folding - has a configuration that can not be narrower than the left and right positions of the Le left and right ends. Therefore, there is a problem to be improved with respect to prevention of erroneous operation when reducing the left and right width and improvement in compactness when reducing the left and right width.

[0004]

Means for Solving the Problems In order to solve the above-mentioned problems, the invention according to claim 1 is directed to a rice transplanting machine configured so that the lateral width of the seedling working machine can be reduced. The seedling rest portions of the left and right outer streaks of the reciprocating right and left reciprocating seedling stand are provided movably in the left and right sides, and are located on the left and right outer sides of the support rail for receiving the lower end of the seedling placed on the seedling stand, and
Left of the support rail at a position that does not overlap with the support rail in side view
A rail guard that guards both right ends is provided.
Move the left and right ends of the holding rail around the rotation axis from the rail guard.
Away is rotated to the side arranged to be folded to the left and right inward, Le - Ruga - was rice transplanter, characterized by being configured to be slidable to de right and left inner side.

[0005]

In the rice transplanter according to the first aspect of the present invention, when the width of the right and left sides is reduced, the left and right outer rails of the seedling table are moved to the left and right sides, and then the support rails are moved right and left. both ends of times
Rotate to the side away from the rail guard about the axis of motion
Along with the collapse on the inside, Les - Ruga - vinegar de to the left and right inside
Ride and do. At this time, the rail guard is in side view.
A support rail provided at a position not overlapping with the support rail;
The left and right ends move away from the rail guard around the rotation axis.
As it rotates, move the left and right ends of the support rail inward to the left and right
Les the After - Ruga - in case of moving the de to the left and right inner
Conversely, support after moving the rail guard to the left and right inside
Even if you move the left and right ends of the rail
Moving the rails to the left and right inside
The two cannot interfere with each other in the movement, and can move from any of them .

[0006] Therefore, when the width of the left and right is reduced ,
Such erroneous operation can be prevented, and compactness can be improved when the left and right widths are reduced .

[0007]

An embodiment of the present invention will be described with reference to the drawings. The riding rice transplanter 1 is configured such that a seedling transplanter 4 is mounted on a rear side of a traveling vehicle body 2 via an elevating link device 3 that operates to elevate and lower. In addition, a side-strip fertilizer device 5 is provided at a rear portion of the traveling vehicle body 2. The side-strip fertilizer applicator 5 has a horizontally long and integral hopper section 5a for accommodating fertilizer, and a fertilizer feeding section 5b... Is disposed on the front side of the seedling mounting table 42 and on the rear step portion 21c.
… And the fertilizer application guide part 5d provided near the place where each strip is planted…
Are connected by the hoses 5c, and the fertilizer fed by the fertilizer feeding sections 5b by the pressurized air flowing through the hoses 5c is conveyed to the fertilizer application guide sections 5d to be laterally fertilized. Have been. The pressure air blown into the hose 5c ...
The air is blown by the electric blower 5e, and the compressed air from the blower 5e is blown into the horizontally long pipe-shaped air chamber 5f.
Pressurized air is blown into c. Air
The chamber 5f is fixed to the upper end of the link base 31 so as to lie on the left and right. The mounting frame for each fertilizer feeding section 5b, the supporting frame for the left and right expanding step 22, and the spare frame are further provided. Also serves as a support frame for the seedling mounting table 50. Although the blower 5e protrudes outward on the left side,
When reducing the width of the body, the connection with the air chamber 5f is disconnected, and the body is rotated around the vertical shaft 5g to be moved inward in the left-right direction.

The traveling vehicle body 2 includes a pair of left and right driving and rotating front wheels 6.6 and a pair of left and right driving and rotating rear wheels 7.7.
It has. Further, a transmission 8 is disposed on the front side, and front wheel axle frames 9 are provided from left and right sides of the transmission 8.
9 is fixed, and the front wheel final cases 10 and 10 are connected to both ends of the frames 9 and 9, respectively.
Front wheel axles 10a and 10 protruding outward from below
The front wheels 6 are attached to a. The power in the transmission 8 is transmitted by the transmission mechanism in the front wheel axle frame 9.9 and the front wheel final case 10, 10, and the front wheels 6.6 are driven to rotate. The front end of the vehicle body frame 11 is fixed to the rear side of the transmission 8. The rear ends of the vehicle body frames 11, 11 are fixed to the lateral frame 12, and the rear wheel frame is mounted on the bearing at the center of the lateral frame 12.
A rear wheel rolling shaft 13a fixed to the center of the left and right sides of the drum 13 with its axis centered horizontally in the front-rear direction is fitted. Rear wheel gear cases 14 and 14 are fixed to the left and right ends of the rear wheel frame 13, and the rear wheels 7 are attached to rear wheel axles 14a and 14a which project laterally from the outside of the rear wheel gear cases 14 and 14.・ 7 is attached. Therefore, the mission 8 and the frame 11.1
1. For the vehicle body frame composed of the lateral frame 12,
The rear wheel frame 13 to which the rear wheels 7, 7 are attached can roll around the rear wheel rolling shaft 13a. The power in the transmission 8 is transmitted from the rear side to the left and right rear wheel gear cases 14, 14 by rear wheel transmission shafts 14 a, 14.
a, and the rear wheels 7, 7 are driven and rotated. Note that the rear wheel axles 14a and 14a have auxiliary wheels 7 'slightly smaller than the wheel diameter of the rear wheels 7
7 'is attached. The power input to the transmission 8 is from the engine E supported on the frames 11 and 11 to the first belt transmission 15 (15a: engine side pulley, 15a ': engine output shaft, 15b: hydraulic pump). Side pulley, 15b ': hydraulic pump drive shaft, 15c: transmission belt), which is once transmitted to a hydraulic pump P fixed on the transmission 8, from which it is continuously transmitted to the input shaft of the transmission 8 by a second continuously variable transmission type. Belt transmission device 16 (16a: hydraulic pump side split pulley, 16b: transmission side split pulley, 16b)
b ': mission input shaft, 16c: transmission belt. Both split pulleys 16a and 16b are reciprocally pulled by the auxiliary speed lever.
The lead width is adjusted. ) Is transmitted so that the speed can be changed steplessly at high and low speeds. The alternator G attached to the engine E is transmitted from the second output shaft of the engine E by a third belt transmission 17. Also,
A handle 18 is provided on the front side of the vehicle body. Further, the upper side of the engine E is covered with an engine cover 19, and a seat 20 is mounted on the cover 19.

The direction of the front wheels 6, 6 with respect to the front-rear direction is turned by turning the handle 18. That is, the rotation of the handle 18 is transmitted to a steering arm 18a provided on the front bottom portion of the transmission 8, and further transmitted to the left and right front wheel final cases 10 and 10 via the rods 18b and 18b. In the front wheel final case 10, 10, the upper case is fixed to the front wheel axle frame 9.9 and is fixed to the vehicle body, and the lower case is immovable up and down with respect to the upper case. It is provided to be rotatable left and right around the vertical axis. The rods 18b and 1 are attached to an arm provided integrally with the lower case.
8b are connected. Therefore, when the steering wheel 18 is turned to the right, the steering arm 18a is turned to the right, and further, the lower case of the left and right front wheel final cases 10, 10 is turned to the right, and the front wheels 6, 6 are turned to the right. Move. Conversely, if the handle 18 is turned to the left, the front wheels 6 turn to the left.

[0010] As described above, the rear wheels 7, 7
The rear wheel frame 13 is configured to be able to roll around the rear wheel rolling shaft 13a with respect to the wheels 11. Thus, even when the left and right wheels of the rear wheels 7, 7 locally pass through portions having different heights, the rear wheel frame 13 is moved in accordance with a change in the right and left ground loads. Ring shaft 13
Since the rolling motion is performed around the a, the left and right wheels of the rear wheels 7, 7 can always travel while maintaining the ground contact state.

When the front wheel traces of the front wheels 6, 6 and the rear wheels 7, 7 and the auxiliary wheels 7 ', 7' are leveled, the front wheel traces are center flow.
48, 48, and the rear wheel marks are erased.
The ground is leveled by the keys 60 and the traces of the auxiliary wheels are leveled by the side floats 49. By the way, the tread of the front wheels 6.6 is provided narrower than the tread of the rear wheels 7.7. In addition, the rear wheel 7.7 has the seedling planting line PL2 when the rear wheel 7.7 has the wheel passing position with respect to the left and right positions of the seedling planting lines PL1 to PL8 by the planting device 41 of the seedling transplanting machine 4.
In the front wheels 6.6, the streak position on the inner side of the rear wheel passing position, that is, the seedling planting, Appendix PL
It is provided so that it may pass through the position between the streaks between 3 and PL4 and the position between the streaks between the planting studs PL5 and PL6. still,
The passing positions of the front wheels 6.6 are determined by the seedlings PL3 and PL4.
Between seedlings and between seedlings PL5 and PL6
Between the left and right, the right and left outer seedlings attached PL3 ·
It is arranged near PL6. Also, auxiliary wheels 7 '
7 'is attached so as to pass through the position between the seedlings PL2 and PL3 and the position between the seedlings PL6 and PL7.

The traveling vehicle body 2 has a main step 2
1 is provided so as to cover the upper side of the front wheels 6 at a position lower than the seat 20. This step 21 includes left and right step portions 21 a and 2 on both the left and right sides of the seat 20 and the handle 18.
1a and a central step portion 21b connecting the left and right step portions at the front side of the seat 20. On the rear side of the seat 20, a rear step portion 21c having a step surface higher than the main step 21 and covering the upper side of the rear wheels 7, 7 is provided.
Are provided over the left and right so as to connect the rear ends of the left and right step portions.

Further, left and right expansion steps 22 are provided on both left and right outer sides of the left and right step parts 21a and from near the position above the front wheel axle to the left and right outer positions of the rear step part 21c. Left and right step parts 21a
Is provided at substantially the same height as the step surfaces of the left and right step portions 21a, 21a, and the rear portion is raised one step and provided at substantially the same height as the step surface of the rear step portion 21c. The extension steps 22 are provided so as to cover the upper side of the auxiliary wheels 7 ', 7'. Also,
Riding steps 23 are fixed to the left and right outer portions of the extension steps 22 and are used when getting on and off the steps from the left and right sides of the body. It is also possible to get on and off the left and right step portions 21a from the front side of the fuselage.

Next, the structure around the handle will be described below. The lower side of the handle 18 is covered with a post cover 27,
A display panel for displaying various operating states is provided on the upper portion of the post cover 27. A main transmission lever and a rear wheel differential lock lever are provided on the left side, and an auxiliary transmission lever and an accelerator lever are provided on the right side thereof.
Are arranged. The operator can operate the steering wheel 18 while sitting on the seat 20 while easily changing the levers and visually confirming the operation of the levers. Note that a pedal operated by a driver's foot is provided on the lower rear side of the post cover 27, a clutch pedal is provided on the left side, and a rear wheel clutch / brake pedal is provided on the right side.

The lifting link device 3 is composed of frames 11
An upper link 32 and lower links 33 are rotatably attached to a link base 31 fixed to the rear side of the vehicle. A vertical link 34 is connected to the rear ends of these upper and lower links. A connecting shaft 40a fixed to the transmission case 40 of the seedling planting machine 4 is rotatably connected to a bearing projecting rearward from the lower end of the vertical link 34, and the seedling planting machine 4
Are mounted to be rotatable left and right with respect to the traveling direction. The base side of the hydraulic cylinder 35 is pivotally supported by a support member fixed to the frame 11, and the piston rod side is connected to the tip end of a swing arm 31 a extending downward integrally with the base of the upper link 31 via a spring. I have. Hydraulic cylinder 3
When the telescopic operation is performed, the elevating link device 3 is operated to elevate and lower.
The seedling planting machine 4 moves up and down. The hydraulic cylinder 35 is switched by a hydraulic valve 36.

The seedling transplanter 4 has an eight-row planting configuration. First, the transmission case 40 is connected to the elevating link device 3 so as to freely roll left and right, and the transmission case 8 of the traveling body 2 is connected to the first planted transmission shaft 8a and the intermediate gear case 8.
b, transmitted via the first planting transmission shaft 8c. The front portions of the planting transmission frames 40a, 40a extending rearward are connected to the left and right sides of the transmission case 40, and further connected to the left and right outer portions of the front portions of the planting transmission frames 40a, 40a. Pipe 4
0b and 40b, and the right and left planting transmission frames 40c and 40b.
The front of 40c is connected. The four planting transmission frames 40a, 40a, 40c, and 40c are arranged side by side at predetermined intervals in the front-rear direction, and planting drive shafts 41a 'project from both rear end portions of each of the transmission frames. The rotating shaft 41a '...
Are mounted so that the rotating cases 41a of the planting devices 41 are driven to rotate.

The planting device 41 includes the planting drive shaft 41a '.
And a rotating case 41a connected to the
a of two planting tools 41b and 41b attached to both end sides
Consists of The planting tools 41b, 41b are a rotating case 41.
The tip of the fork-shaped seedling separating tool fixed to the planting tools 41b is rotated in the opposite direction to the rotation of the rotating case 41a by the transmission mechanism in FIG. It works like drawing. Thereby, the seedling mounting table 42 reciprocates left and right to sequentially supply the seedlings on the seedling mounting surfaces 42a to the seedling dividing ports 43c of the support rail 43, while the seedling separating tools of the planting tools 41b are moved. The seedlings supplied to the seedling take-out port are separated and held, and when they reach the field, the seedlings held by the seedling separating tool are pushed out by the seedling pushing mechanisms provided in the planting tools 41b and planted in the field.

The seedling mounting table 42 is provided so as to be inclined so that the front side is higher, and is supported on the back side of the seedling mounting surfaces 42a so as to be movable left and right. That is, engaging sliding members 42b provided on the rear lower end side of the seedling mounting surfaces 42a are supported by the planting transmission frames 40a, 40a, 40c, and 40c, and are long supported rails 43 left and right. Are slidably engaged with each other, and the seedling mounting base is fixed to the transmission case 40 side in the concave portion of the U-shaped support frame 44 fixed to the upper rear side of the seedling mounting surface 42a. Rollers 40e, 40e provided at the upper ends of the support frames 40d, 40d are rotatably engaged with each other, and the seedling mounting table 42 is supported to be able to move left and right. Then, both ends of the laterally moving rod 40f reciprocating right and left by the left and right reciprocating mechanism in the transmission case 40 are connected to the seedling table 42 by the first connecting arm 40g and the second connecting arm 40h. 2.4
0h-2, so that the seedling table 42 reciprocates left and right.

The engaging sliding members 42b, which are slidably engaged with the support rail 43 in the left and right direction, are members made of synthetic resin having a concave cross section. The seedling mounting base lower frame 42d fixed to the rear lower end is bolted and fixed. The right and left ends 43 'and 43' of the support rail 43 are provided so as to be foldable, and the engaging portions D and D of the right and left ends 43 'and 43' of the support rail are also engaged. Sliding members 42b 'and 42b' are provided. However, if there is a step in the joints D, the abrasion of the engagement sliding contact members 42b ', 42b' increases, so that rollers are provided on both left and right sides of the engagement sliding contact members 42b ', 42b'. -Bearings 42c and 42c; 42c and 42
c is rotatably attached to the seedling mounting base lower frame 42d, and the engaging sliding contact members 42b 'and 42 at the joints D and D are provided.
b 'is supported so as to be able to move left and right while slightly floating from the support rails 43; 43' and 43 '. As a result, even if there is a slight step at the joint between the inner support rail 43 and the left and right ends 43 'and 43' of the support rail, the roller bearings 42c are engaged and slidably engaged with each other. Member 42b '・ 42
Since b 'is engaged without contacting the stepped portion, the seedling mounting portions 42-1 at the left and right end portions of the seedling mounting table 42 which can be folded without worrying about the wear of the engagement sliding contact members 42b' and 42b '.・ 4
2-8 can be supported so that it can reciprocate left and right.

The support rail 43 includes engaging sliding contact members 42b.
Are formed integrally with a portion 43a having a "mouth" -shaped cross-section and a portion 43b having a "" -shaped cross-section for receiving the lower end surface of the seedling placed on the seedling mounting surface 42a. The support rail 43 is provided with eight U-shaped notched seedling divisions 43c at predetermined intervals, and the seedling divisions 43c are planted for each row. Attachment device 4
The seedling separating tools 1 of the planting tools 41b intervene when separating the seedlings. Note that rubber seedling division fittings 43d are attached to the left and right sides of the edge of the seedling division openings 43c.

A belt-type vertical seedling feeding device 45 is provided on the lower side of each of the seedling mounting surfaces 42a of the seedling mounting table 42. 41, after dividing and transplanting one row of the lower end portion of the seedling from the seedling dividing port 43c, the seedlings are transferred so that the lower row of the next lower row to be split and transplanted is positioned above the seedling dividing port 43c. The structure of the seedling vertical feeding device 45 includes a driving roller 45a, a rotatable roller 45b rotatably supported and a roller 45a,
It consists of an endless seedling feed belt 45c with small protrusions on its outer periphery, which is hung around 45b. The driving rollers 45a ...
The two rollers are mounted so as to rotate integrally with one roller drive shaft 45d, and a drive arm 45e is attached to each roller drive shaft 45d in a ratchet mechanism 45f.
… Attached via. Drive arm 45e ...
When the seedling mounting table 42 moves to the left and right reciprocating end position,
Seedling vertical feed drive shaft 4 which protrudes and rotates from transmission case 40
Seedling vertical drive arm 45h integrally attached to 5g
Are brought into contact with each other, are rotated by a predetermined rotation angle, the driving rollers 45a are driven and rotated, and the seedling feeding belt 45c is rotated by a predetermined amount. Roller part 45
move away from the drive arm 45e, the return arm 45e attached to the drive arm 45e returns the drive arm 45e to its pre-drive posture. Rotation ro
The rotary shafts 45i of the shafts 45b are pulled by springs 45j in the direction in which the belts 45c are stretched for each strip at both ends of each shaft, and are rotatably supported.

Reference numerals 46... Denote seedling holders. This seedling holder 4
6 are provided for each row (46-1 to 8) to prevent the seedlings placed on the seedling mounting surfaces 42a of the seedling mounting table 42 from floating. It is provided movably so that it can be switched to the operating state. The specific configuration of the seedling presser 46 is as follows. That is, the bases of the seedling holding rotary shaft support shafts 46a 'are fixed to the upper and lower central upper surfaces of the partitioning portions 42d of the respective seedling mounting surfaces 42a of the seedling mounting table 42, and are fixed to the support shafts. Support member 46
The seedling holding rotary shafts 46b are rotatably supported by the respective a. A stick-shaped main seedling holding member 46c is fixed to the seedling holding rotating shaft 46b so as to be directed in the seedling vertical feeding direction (from the upper side of the seedling table to the lower side seedling dividing port 43). And the main seedling holding member 46c / 4
6c are fixed to the lower shaft 46d for each strip. Also, the main seedling holding members 46c, 46c, 4
6c... A short rod-like auxiliary seedling holding member 46e.
Are provided in parallel, the lower end of which is a lower shaft 46d.
It is stuck to. The left and right ends 46d ', 46d' ... of the seedling presser lower end connecting shaft 46d are bent in the direction of the lower end of the seedling mounting surface, and are there.
And is detachably attached to an engagement hole provided in the main body.
The locking members 46f, 46f...
a locking member support shaft 46 having a base fixed to the lower end side of d.
are fixed to the positions f ′, 46f ′... with screws 46f ″, 46f ″. Therefore, if the left and right ends 46d 'and 46d' of the seedling presser lower end connecting shaft 46d are engaged with the seedling presser retaining members 46f and 46f, the seedling presser 46 can be used.
Are locked in the seedling holding action state, and the seedling holding member locking members 46f are disengaged from the seedling holding members 46f while bending the seedling holding members 46c so that the seedling holding members 46c, 46e. When the seedling presser 46 is rotated upward around 46b, the seedling presser does not operate. In addition, the seedling retainer locking member 46
When the positions f and 46f are adjusted with respect to the locking member support shafts 46f 'and 46f', the positions of the seedling holding members 46c, 46e with respect to the seedling mounting surface 42a in the seedling holding state can be adjusted, and the seedling holding members 46c ... , 46e... Can be adjusted. 46g and 46g are seedling stoppers,
-1.46-8, a state in which the seedling placed on the seedling mounting surface 42a is prevented from moving to the side of the seedling dividing port 43c. The state is switched to a state in which the movement of the seedlings that have been stopped and placed is not blocked. The seedling stoppers 46g and 46g are detachable and can be replaced with a seedling mounting portion of another strip.

Numeral 47 denotes a seedling restricting rod, which is attached laterally to the lower end of the seedling table and acts so as to receive the leaves of the seedlings at the lower end. Of the seedlings divided into the transplanting devices 41 are regulated. This seedling control rod 47
Are selectively inserted through a plurality of support holes provided in the seedling regulating rod support portions 47a fixed to the lower ends of the partition walls 42d. Two center floats 48 are provided on the bottom center side of the seedling transplanter 4, and side floats 49 are provided on the left and right outer sides thereof. These floats are mounted on a lower side of a planting transmission frame 40a, 40a, 40c, 40c. A planting depth adjusting lever L is provided with a float supporting pipe 40j long to the left and right so as to be rotatable. , Float support arms 40i and 40 extending rearward to the pipe.
i are fixed and the float supporting arms 40i and 40i
... Mounting bracket 4 fixed to the top of the float at the rear end
8 ', 48', 49 ', 49' are rotatably mounted on pivots 40i '.... Therefore, each float can be simultaneously adjusted vertically by rotating the planting depth adjusting lever L. These floats 48, 48, 49, and 49 are slid while leveling the mud surface when the fuselage is advanced forward while touching the ground. Leveling, and four left and right side floats 49
It is provided so that the planting position of the streaks is leveled. The center floats 48 are also sensors for detecting the topsoil surface position for controlling the height of the seedling transplanter 4 to a predetermined height with respect to the topsoil surface. These two center floats 4
8 and 48 are connected to each other by a connecting member, and a hydraulic valve 28 is attached to the connecting member.
The valve spool moves in and out of the valve case fixed to the machine frame of the seedling transplanter by the vertical movement of the front part. When the seedling transplanter 4 becomes lower than the predetermined height with respect to the topsoil, the front end of the center float 48 moves upward, the valve spool is pushed into the valve case, and the hydraulic pressure is increased in the direction in which the hydraulic cylinder 35 is extended. The valve 36 is switched, and the planting work machine 4 is raised. When the planting work machine 4 rises, the valve spool is pulled out of the valve case, and when the planting work machine 4 returns to a predetermined height, the operation of the hydraulic cylinder 35 is stopped and the planting work machine 4 is stopped. The rise stops. Conversely, when the seedling transplanter 4 is higher than the predetermined height with respect to the topsoil, the front end of the center float 48 moves down, and the valve spool is pulled out of the valve case.
The hydraulic valve 36 is switched in the direction in which the hydraulic cylinder 35 contracts, and the planting machine 4 is lowered. When the planting work machine 4 descends, the valve spool is pushed into the valve case, and when the planting work machine 4 returns to a predetermined height, the operation of the hydraulic cylinder 35 stops and the planting work machine 4 is stopped. The descent stops. Therefore, even if the traveling vehicle body 2 moves up and down, the seedling transplanter 4 is controlled so as to maintain a predetermined height with respect to the topsoil in the field.
Is planted at a predetermined depth with respect to the topsoil of the field.

The spare seedling mounting table 50 holds the seedlings to be supplied to the planting work machine 4.
The seedlings are provided so that the seedlings can be placed side by side in the state of being stored in the seedling box C on the upper side. Specifically, the fixed seedling mounting portion 50A fixed to the machine body and the first folded seedling mounting portions 50B and 50B foldably connected to the left and right ends thereof, and furthermore, the left and right ends of the first folded seedling mounting portions 50B and 50B can be folded. Folded Seedling Place 50C ・ 50C to be connected to
It consists of.

The fixed seedling mounting part 50A has a seedling mounting rail 50a.
・ 50a is a frame whose left and right ends and center are connected to each other.
The seedling placing rails 50a, 50a are fixedly supported by support frames 50c, 50c having bases fixed to the air chamber 5f. A seedling box slide guide frame 50 having an L-shaped side cross section is provided on the upper surface of the seedling mounting rails 50a.
a 'and 50a' are fixed, so that the seedling loading
The seedling box C placed on the tools 50a is guided so as to be slidable in the left-right direction. In addition, the rear seedling loading rail 5
Numeral 0a is provided slightly lower than the front seedling mounting rail 50a, and the seedling boxes C to be mounted on the seedling mounting rails 50a are slightly inclined toward the seedling table 42 side of the seedling transplanter 4. It is designed to be placed in a state where it is done. This facilitates the work of scooping the seedlings from the seedling boxes placed on the seedling placing rails 50a and 50a and supplying them to the seedling table 42 of the seedling transplanter 4.

The first folded seedling rest 50B
B is a first extension seedling mounting rail 50d, 50d; 50d connected to the left and right ends of the seedling mounting rails 50a, 50a by connecting frames 50e, 50e;
50d is a rotational connecting portion 50f.
It is connected so as to be rotatable around 50f ', and is provided so that the first extension seedling mounting rails 50d can be turned upward and folded inward. The seedling box slide guide frames 50a 'are fixed to the upper and lower surfaces of the first extended seedling mounting rails 50d.

The second folded seedling mounting portions 50C, 50C
First extension seedling loading rail 50d ・ 50d; 50d ・ 50d
On the left and right ends of each of the second extension seedling rails 50h, 50h;
0h and 50h are the front and rear shafts 50 at the rotary connecting portions 50i and 50i.
are connected so as to be rotatable around i ′ and 50i ′ so that the second extended seedling mounting rails 50d can be turned upward and folded inward. The seedling box slide guide frames 50a 'are fixed to the upper and lower sides of the second extended seedling mounting rails 50h.

Therefore, the seedling boxes C to be placed on the spare seedling mounting table 50 are slid left and right by receiving the seedling rails at the front and rear end bottoms of the seedling box with the longitudinal direction of the seedling box C facing forward and backward. Can be placed freely. When the seedling boxes C are placed on the spare seedling mounting table 50, as shown in FIG. 18, the row seedling supply truck 70 having the same seedling loading rails 70a as the spare seedling loading table 50 on the ridges. And a plurality of seedling boxes C are placed side by side on the furrow seedling supply truck 70. When the rice transplanter 1 is worn sideways on the ridge, the seedling loading rail 70a of the furrow seedling supply truck 70 is provided. -The ends of 70a are aligned with the left and right ends of the seedling loading rail of the spare seedling mounting table 50, and the seedling box on the row seedling supply truck 70 is pushed out toward the rice transplanter and slid and placed.

At the left and right outer end portions of the seedling mounting rails of the spare seedling mounting tables 50, 50, seedling box stopper pins 50j, 50j, 50j, 50j capable of operating on and out of the rail surface. Is provided. As shown in FIG. 19, the seedling box stopper pins 50j are pierced through pin holes formed in the rail up and down, and a pin 50k integral with the stopper pin is formed by a spring 50m in the rail hollow portion. It is urged upward and attached. Thereby, the stopper pin 5
0j... Normally project upward from the upper surface of the rail by a spring 50m, but if they are pushed downward, they retract into the rail. Therefore, row seedling supply cart 7
0 of the seedling mounting rails 70a.
When the seedling-mounting rails 50a, 50a are aligned with the left and right ends of the seedling-mounting rails 50a, and are set in a mountable state, a stopper pin push-down press is integrated with the end of the seedling-loading rails 70a, 70a of the row seedling supply truck 70. The seedling box stoppers 70-70b are pushed down by the pins 50j-50j, and the seedling boxes C on the ridge seedling replenishing trolley 70 are placed on the seedling mounting rail 50 of the spare seedling mounting table 50 on the rice transplanter side.
It becomes a state where it can be pushed and slid to 0a and 50a. On the other hand, a seedling box stopper pin 50j at the end of the rail opposite to the seedling box replenishing side of the seedling loading rail of the spare seedling mounting table 50.
Is protruded upward from the upper surface of the seedling mounting rail, so that seedling boxes C to be replenished by sliding on the seedling mounting rail are seedling box stopper pins 50j.
The seedlings are not stopped from falling on the rail.

The maximum number of seedling boxes that can be placed on the seedling mounting rail of the spare seedling mounting table 50 is the first folded seedling mounting parts 50B and 50B and the second folded seedling mounting parts 50B on both the left and right sides of the fixed seedling mounting part 50A. With the seedling rest 50C, 50C extended horizontally,
The number (16 in this embodiment) is twice the number of seedlings placed on the seedling mounting table 42 (8 in this embodiment). That is, seven seedling boxes are placed on the fixed seedling placing part 50A, and 4.5 seedling boxes are placed on the first and second folded seedling placing parts 50B and 50B; 50C and 50C, respectively. In addition, one of the first and second folded seedling rests 5
In a state in which 0B / 50C is rotated upward, the number of seedlings (the number of seedlings) of the seedling mounting table 42 on the other first and second folded seedling mounting parts 50B / 50C and the fixed seedling mounting part A In this embodiment, eight or more seedling boxes C are mounted. Thus, for example, during the planting run on the ridge, the foldable seedling mounting portion 50B projecting over the obstacle on the ridge on the side thereof.
If there is a risk of collision of the seedlings 50C, obstacles can be avoided by rotating the folded seedling placing parts 50B and 50C on that side upward and moving leftward and rightward. Can be placed on the preliminary seedling mounting table 50. Therefore, it is possible to easily avoid obstacles at the time of work, and to prevent a decrease in work efficiency due to the obstacle.

Further, as shown in FIG.
0 is 1 for the first folded seedling rest 50B
Flip it 80 degrees and put the second folded seedling rest 50C
When it is folded 0 degrees and folded on the fixed seedling mounting part 50A, it becomes a spare seedling mounting table having a configuration in which the seedling boxes C can be placed in two upper and lower stages.
Since the seedling box slide guide frames 50a 'and 50a' are fixed to the upper and lower sides of the first extended seedling mounting rails 50d and 50d of the first folded seedling mounting sections 50B and 50B, the folding is performed. The seedling box slide guide frame 50a 'is also provided on the upper side of the seedling mounting rail of the upper seedling mounting portion 50B.
There will be 50a '...

The first and second folded seedling rests 50
B · 50B: The left and right end positions of the spare seedling mounting table 50 in the folded state of the left and right inside of the 50C · 50C are substantially the same as the left and right end positions when the left and right widths are reduced in the seedling transplanter 4 described later, or the left and right inside. Is provided. Thus, even if the seedling boxes C are horizontally arranged so that the number of seedling boxes C is equal to or more than the number of all the seedling stands 42 on the spare seedling mounting stand 50, the compactness of the body is not impaired. .

The alignment markers 51 are located above the seedlings already planted on the adjacent lines or on the ridge line,
The interval between the seedling being planted and the adjacent planted seedling or ridge line is set at a predetermined interval. This alignment marker 5
The reference numeral 1.51 designates a first marker arm 52c of a marker to be described later, which is a marker support rod 51b having a joining marker member 51a attached to the lower end thereof. 52c.

When the drawing markers 52, 52 are reciprocated in the field for planting work, the drawing markers 52a are grounded to the mud surface on the unplanted side during the work and the next step is performed. The center line of the work travel path is drawn. The drawing markers 52, 52 have first marker arms 52c, 52c attached to the front left and right sides of the traveling vehicle body 2 so as to be rotatable around upper and lower shafts 52b, 52c. The second marker arm 52d is a horizontal shaft 52.
e and 52e so as to be rotatable, so that the posture can be changed between a standing state and a side-down state. And
The drawing action bodies 52a are attached to the tip. At the time of work, the first marker arms 52c, 52c are directed to the left and right outer sides, and when the left and right widths of the body are reduced, the body is rotated rearward to follow the left and right expansion steps 22, 22. It should be noted that the alignment markers 51 are connected to the first marker arms 52c.
Since it is attached to 52c, it moves to the left and right inside of the fuselage together with the drawing marker.

The center pole 53 is provided at the front left and right center positions of the traveling vehicle body 2. If the center pole 53 is planted and run in accordance with the center line drawn by the drawing markers 52, 52, a predetermined distance can be applied to the adjacent streaks of the seedlings planted during the preceding stroke work. The planting work can be run at the interval of the streaks. Well, below
The configuration of the planting work machine 4 for reducing the lateral width of the machine will be described.

First, the seedling mounting table 42 is provided on each of the seedling mounting surfaces 42a.
Are separated by a partition wall 42d.
2-1 ・ 42-2 ・ 42-3 ・ 42-4 ・ 42-5 ・ 4
2-6.42-7.42-8 are sectioned, but the seedling mounting portions 42-2 to 7 for the six inner rows of the seedling mounting table 42 are integrally provided and fixed to the machine frame. Seedling rest part 4 on both left and right ends
2-1 · 42-8 is folded right and left inward and the seedling mounting table 42
Is reduced from the width of eight lines to the width of six lines.

The structure of folding the seedling rests 42-1 and 42-8 at the left and right ends on the left and right sides is as follows. That is, the seedling placement parts 42-1 and 42-8 of the left and right end strips are
Partition wall 42 with seedling placing portions 42-2 and 42-7 on the inside
It is divided by d ′ · 42d ′. The partition wall 42d '
42d 'is an outer partition wall 42d'-1.42d'-1 integral with the seedling mounting portions 42-1 and 42-8 and the seedling mounting portion 42-.
Inner partition wall 42d'-2.42 integral with 2.42 / 7 side
and d'-2, and each is formed into a shape symmetrical with respect to the division plane. In addition, the partition wall 42d '
42d 'is formed so that the area where the seedling presser 46 is provided is higher than the seedling presser rotating shaft 46b (higher than the seedling mounting surface), and the opening 4 is formed in the high partition wall.
2 ″ are provided.
d'-1 · 42d'-1 and inner partition wall 42d'-2.4
Rotation bearings 42d'-1a are respectively provided on the upper portions of 2d'-2.
42d'-1a 42d'-1a;42d'-2a
42d'-2a and 42d'-2a are integrally formed, and the folding rotating shafts 60 are fitted into the rotating bearings, so that the seedling resting parts 42-1 and 42-8 at the left and right end strips are inside the seedlings. It is rotatably connected to both ends of the mounting portions 42-2 and 42-7. Therefore, the seedling placement sections 42-1 and 42-8 at the left and right ends are provided.
Is rotated about the folding rotation shafts 60, 60, and is folded up to a state of covering the upper side of the inner seedling placing portions 42-2, 42-7. The folding rotation shaft 60
60 is provided substantially parallel to the lower side of the seedling mounting surfaces 42a. The upper and lower ends of the folding rotary shafts 60 are pinned so as not to fall out of the rotary portion.

By the way, the seedling rests 42-1 at both right and left end streaks.
When 42-8 is folded, since the section 43b of the support rail 43 is bent upward (so as to cover the lower end of the seedling mounting surface), the section 43b of the support rail 43 is bent upward. When it is attempted to rotate the 42-1 and 42-8 around the folding rotation shafts 60 provided substantially parallel to the lower side of the seedling mounting surface 42a, the tip of the """-shaped portion 43b is obtained. The lower end portions of the integral outer partition walls 42d'-1 and 42d'-1 come into contact with the seedling placement sections 42-1 and 42-8.
However, the rotation bearings 42d'-1a ...; 42d'-
In the rotation connecting portions (three places) H1, H2, and H3 configured by inserting the folding rotation shaft 60 through 2a,
In the pivot connection portions H1 and H2, the outer partition wall 42 is provided.
Rotation bearing part 42d'-1a, 42d'-1 on d'-1 side
a is the rotation bearing 42d'- on the side of the inner partition 42d'-2.
2a and 42d'-2a are connected so as to be on the upper side, and the outer partition wall 42d 'is located at one lower position H3.
-1 side rotating bearing portion 42d'-1a is connected to the inner partition wall 42.
The rotation bearing portion 42d'-2a on the d'-2 side is connected to the lower side with a slight interval d.
Therefore, when folding the seedling placing parts 42-1 and 42-8 of the left and right end strips, first, the seedling placing parts 42-1.
42-8 is slid upward along the rotation shafts 63 by the distance d (the distance d between the lower rotation bearings 42d'-1a and 42d'-2a). After that, the seedling rests 42-1 and 42-8 on both right and left ends are folded and the rotating shafts 60 and 60 are folded.
Rotate around. As a result, the lower ends of the partitioning walls 42d 'and 42d' of the folding rotating part are supported by the support rail 43.
The """-shaped portion 43b can be extended to a position close to the"-"-shaped portion 43b with a small gap.
Outer partition wall 42d 'when folding -1.42-8
The lower end of -42d'-1 is the """of the support rail 43.
It can be folded while avoiding contact with the tip of the character-shaped portion 43b.

The seedling rests 42-1 and 42 at the left and right end strips
After the -8 is folded so as to cover the upper side of the inner seedling placing portions 42-2 and 42-7, the outer ends of the folded seedling placing portions 42-1 and 42-8 are connected to the lower side thereof. Seedling placement part 4
It is supported by the seedling presser support member 2-2.42-7. That is, a trumpet-like shape is provided at the distal ends of the left and right center side seedling presser rotating shaft support shafts 46a 'and 46a' and the locking member support shafts 46f 'and 46f' that support the seedling pressers 46-2 and 46-7. The receiving parts 46g and 46g; 46h and 46h are fixed,
The engagement holes 46g 'and 46g' of the receiving portion;
Left and right end seedling presser rotating shaft support shafts 46a 'and 46a' supporting the seedling pressers 46-1 and 46-8 on the side of the seedling rests 42-1 and 42-8 which are folded at 46h ', and locking members. The distal ends of the support shafts 46f 'and 46f' are fitted. The pins 46i · 4 are used to prevent the fitted locking member support shafts 46f '· 46f' from coming out of the receiving portions 46h · 46h.
Insert 6i. In addition, the seedling presser rotating shaft support shaft 4 on the left and right end sides.
6a 'and 46a' and locking member support shafts 46f 'and 46f'
46g ". 46g"; 46g at the tip of
h "and 46h" are fixed, so that the receiving portion 46g
· 46g; seedling presser rotating shaft support members 46a · 46a received and supported by 46h · 46h and locking member support shaft 46f '.
The rattling of 46f 'is prevented.

Next, the seedling rests 42-1 and 42 at the left and right end strips
When -8 is unfolded to be in a workable state, the seedling rests 42-1 and 42-8 at the left and right end streaks have the inner six seedling rests 42-.
In order to reciprocate right and left together with 2 to 7, the upper and lower two portions are integrally connected on the back side of the seedling mounting surface 42a. That is, on the upper rear side of the seedling mounting surface 42a, the connecting pipes 61 fixed to the inner seedling mounting portions 42-2 and 42-7 are connected to the seedling mounting portions 42-1 and 42-
The first connecting rods 62 provided on the connecting pipe 8 are inserted into the connecting pipes 61 and the threaded portions 61 a
1a, a screw hole 6 provided on the distal end side of the first connecting rods 62, 62
2a and 62a are screwed in, and the seedling rest part 42-
1.42-8 are connected to the inner six-row seedling placing portions 42-2 to 7-2. The first connecting rods 62 are slidably fitted in fixed connecting rod support pipes 63 on the back side of the seedling rest parts 42-1 and 42-8 at the left and right ends.
64 and 64 are springs, and the first connecting rods 62.6
2 is prevented from loosening due to vibration or the like after being screwed into the connecting pipes 61. Numerals 65, 65 are knobs integrated with the first connecting rods 62, 62. F1 and F1 are temporary fixing portions for temporarily fixing the first connecting rods 62 so that the first connecting rods 62 do not easily fall off the connecting rod support pipes 63. This allows
It is possible to prevent the first connecting rods 62 from falling off when the seedling rest parts 42-1 and 42-8 at the left and right ends are folded or thereafter.

Further, in the lower part on the back side of the seedling mounting surface 42a, it is provided on the outer surface of the second connecting arm 40h-2, 40h-2 fixed to the inner seedling mounting part 42-2, 42-7. At the screw holes 40h 'and 40h', the seedling rest 42
Third connecting arm 40h-1.4 fixed to -1.42-8
At the left and right ends, the seedling rests 42-1.4 are screwed into the threaded ends of the second connecting rods 66 attached to 0h-1.
2-8 are connected to the six inner seedling placing portions 42-2 to 4-7. Second connecting arm 40h-2 ・ 40h-2
Is the horizontal moving rod 4 via the first connecting arm 40g.
0f, and the entire seedling mounting table 42 is
It is designed to reciprocate right and left by a left and right reciprocating mechanism inside. The second connecting arms 40h-2 and 40h-2 are fixed to the seedling placing portions 42-2 and 42-7 by fastening them to the lower frame 42i fixed to the lower rear portion of the seedling placing stand 42 with bolts. Have been linked. Further, the third connecting arms 40h-1 and 40h-1 are fixed to the seedling mounting portions 42-1 and 42-8 by lowering the lower frame on the lower rear side of the seedling mounting portions 42-1 and 42-8. 42j and 42j are connected by being fixed with bolts. Then, the second connecting arm 40h-2
・ 40h-2 and third connecting arm 40h-1 ・ 40h-1
Are provided at positions adjacent to each other when the seedling placing portions 42-1 and 42-8 of the left and right end strips are spread in a workable state. Thus, at the lower rear part of the seedling mounting surface 42a,
A lateral moving rod 40f for laterally moving the seedling mounting table 42 and the member connecting the seedling mounting table 42 with the seedling mounting sections 42-1 on both left and right ends.
42-8 is a workable unfolded state in which the inner six rows of seedling mounting portions 42
-2 to 7 so as to be connected and fixed, so that a simple structure can be used without using another connecting member.
The lateral movement in the vicinity of the seedling dividing openings 43c 43c of the seedling 42-8 is surely moved integrally without delay to the seedling placing portions 42-2 to 7 of the inner six rows, and the seedlings at the seedling dividing opening There is no disturbance in division. 67, 67 are springs, and connect the second connecting rods 66, 66 with the screw holes 40h-2 'of the second connecting arm.
-Prevents loosening due to vibration etc. after screwing into 40h-2 '. 68, 68 are knobs integrated with the second connecting rods 66, 66. F2 and F2 are temporary fixing portions having the same configuration as the temporary fixing portions F1 and F1, and the second connecting rods 66 are connected to the third connecting arc.
This is temporarily fixed so that it does not easily fall out of the programs 40h-1 and 40h-1. Thereby, it is possible to prevent the second connecting rods 66, 66 from falling off when or after folding the seedling rest parts 42-1, 42-8 at the left and right ends.

The structure of the temporary fixing portions F1 and F2 is as follows.
A knock pin 69 is provided in the horizontal cylinder portion 70, and a spring 7 for urging the knock pin 69 so as to enter the inside.
1 to prevent the spring 71 from coming off.
2 are provided. The inner tip of the knock pin 69 engages with a step 62a, 66a provided on the connecting rod 62, 66 to temporarily fix it. Steps 62a; 6
6a is a position where the connecting rods 62; 66 are temporarily fixed with the distal ends of the connecting rods 62; 66 slightly retracted from the connecting-side end of the connecting rod support pipe 63 or the third connecting arm 40h-1. It is provided in. Therefore, from the temporarily fixed state, the connecting rods 62 and 66 can be moved into the connecting pipe 61 or the second connecting arm 4.
When pushing into the screw hole 40h 'of 0h-2, the knock pin 69 is pushed against the stepped portion 62a;
It is only necessary to push the connecting rods 62; 66 with a force that only pushes them out from inside 6a. In addition, the temporary fixing portions F1 and F1 are the partition walls 42d at the outer ends of the seedling placing portions 42-1 and 42-8 at the left and right ends.
It is provided so as to enter the back side concave portion of 42d.

By the way, the seedling rests 42-1 at the left and right end strips
When the seedling 42-8 is spread to a workable state,
Seedling vertical feeder 45-1.45-8 of 2-1.42-8 and seedling vertical feeder 45 of inner seedling placing part 42-2.42-7
-2 · 45-7 are linked to be linked. That is,
Roller drive shaft 45 of inner seedling rest 42-2 / 42-7
d-2 · 45d-7 has a drive arm 4 at its inner shaft end.
5e and 45e are mounted via ratchet mechanisms 45f and 45f, and drive clutch bodies 72a and 72a having clutch claws at the outer shaft end are integrally mounted. The seedling mounting portions 42-1.4 are attached to the drive clutch bodies 72a.
The driven clutch body 72b attached to the 2-8 roller drive shafts 45d-1 and 45d-8 so as to rotate integrally therewith.
72b mesh with each other when the seedling rests 42-1 and 42-8 at the left and right ends are attached. The driven clutch bodies 72b, 72b are attached to the roller drive shafts 45d-1, 45d-8 so as to rotate integrally and slidably in the axial direction, and are urged toward the shaft ends by springs 72c, 72c. Have been. Therefore, when connecting with the drive clutch bodies 72a, 72a,
Even when the two clutch claws abut each other, the driven clutch body side can escape, so that even if the phases of the two clutch bodies are not matched, the driven clutch body can be easily connected, and the state immediately shifts to the meshing state.

Also, the seedling rest portions 42-1 and 42 at the left and right ends are provided.
In -8, the seedling holding members 46-1 and 46-8 and the seedling regulating rods 47-1 and 47-8 are independently supported by the seedling mounting portions. That is, the seedling presser 46 attached to the seedling mounting portions 42-1 and 42-8 at both left and right ends on the outer partition walls 42d'-1 and 42d'-1 integrated with the seedling mounting portions 42-1 and 42-8. -1
A support member for supporting the 46-8 and the seedling regulating rods 47-1 and 47-8 is provided, and the inner partition walls 42d'-2 and 42d'-2 are integrated with the seedling placing sections 42-2 and 42-7. Seedling presser 46-2 attached to inner seedling rests 42-2 and 42-7
A support member for supporting the 46-7 and the seedling regulating rods 47-2 and 47-7 is provided. The supporting members for supporting the seedling presser 46 are the seedling presser rotating shaft support members 46a and 46a and the locking member supporting shafts 46f 'and 46f', and the supporting members for supporting the seedling regulating rod 47 are the seedling regulating rod support portions 47a and 47a. 47a. Therefore,
The seedling placing portions 42-1 and 42-8 at the left and right ends are provided with seedling pressers 46-1 and 46-8 and seedling regulating rods 47 attached thereto.
-1 · 47-8 can be folded while supporting them without removing them.

Next, in order to reduce the lateral width of the machine, the left and right end portions 43 'and 43' of the support rail 43 are turned upward from the vicinity of the seedling dividing openings 43c and 43c on both right and left sides to be folded. It has a configuration. First, as shown in FIG. 15, the cross-sectional shape of the support rail 43 is "mouth".
A connecting plate 80 is rotatably mounted by bolts 81 on the rear surfaces (front surfaces) of the right and left ends of the L-shaped portion 43a (the engaging sliding contact members 42b at the lower portion of the seedling mounting table 42 engage with it). , A long hole 80a / 8 provided in the connecting plate 80.
The right and left end portions 43 'of the support rail are attached to 0a by bolts 82 so as to be slidable in the long hole. Further, a connecting core 83 is provided in the hollow portion of the “mouth” -shaped portion 43 ′ a of the right and left ends 43 ′ of the support rail with the bolt 82.
It is fixed at. In addition, the support rails 43 '
At the end of the connecting plate 80, there is provided a fixing tool 8 which is scratched by the folded engaging portion 80b at the left and right ends of the connecting plate 80 and pulled and fixed.
4 is fixed.

Therefore, when the left and right end portions 43 'and 43' of the support rail are operatively connected to the inner support rail 43 by the above configuration, the left and right end portions 4 of the support rail are required.
The 3 'and 43' are developed in a posture along the rail direction of the inner support rail 43, and the left and right end portions 43 'and 43' of the support rail are inserted into the elongated holes 80a and 80a of the connecting plate 80. Slide left and right inward to the left and right ends 43 '
The inner connecting rails 43 are provided with connecting
Is inserted into the hollow portion of the "mouth" -shaped portion 43a.
Then, loop-shaped engaging portions 84 of fixing tools 84, 84 integrally provided on the left and right end portions 43 ', 43' of the support rail.
a · 84a are connected to engaging portions 80a ·
The support rail 80 is pulled and fixed, and the left and right ends 43 'and 43' of the support rail are prevented from coming off left and right. Since the connecting plates 80 are not moved in the left and right rail directions with respect to the inner support rail 43, the fixing members 84 are provided.
The left and right ends 43 'of the support rail 43' are fixed by the elasticity of the loop-shaped engaging portions 84a, 84a toward the inner support rail 43 in the left and right rail directions. Is done.

When the left and right end portions 43 'and 43' of the support rail are folded inward to reduce the left and right width, first, the fixtures 84 and 84 are fixed to the connecting plates 80 and 80,
Release the engagement state, and support rails left and right ends 43 ', 43'
Is slid left and right outward in the elongated holes 80a of the connecting plate, and the connecting cores 83 are pulled out of the hollow portion of the inner support rail 43. Bolts 81 to which connecting plates 80 are rotatably mounted so that the left and right end portions 43 'of the support rail are substantially parallel to the seedling mounting surfaces 42a of the seedling mounting table 42.・ Fold it to the left and right inside by rotating it upwards around 81. The left and right end portions 43 'of the support rail are connected to the seedling mounting surface 42a on the lower side of the seedling mounting table 42.
The foldable (or detachable) seedling mounting portion 42-
The left and right ends 43 'and 43' of the support rail are folded in the space where the seedling rests 42-1 and 42-8 are located when the 1.42-8 is unfolded (or mounted) in a workable state. Is supposed to be Therefore, the support rail left and right ends 43 ′
The folding of 43 'is performed after the seedling rests 42-1 and 42-8 have been folded (or removed) to the left and right inside, and the expansion of the left and right ends 43' and 43 'of the supporting rail is folded. Seedling removal section 42-1.4
This is performed before deploying (or mounting) 2-8 so as to be operable. Since the left and right end portions 43 'and 43' of the support rail are folded in a rotatable state, the seedling rest portions 42-1 and 42-8 of the left and right end strips are folded right and left inward. The mounting table 42 is reciprocated left and right, and when the reciprocating seedling mounting table has moved to the left and right reciprocating turn position, the left and right ends of the seedling mounting table are supported right and left ends 43'.4.
Even if it comes into contact with 3 ', the support rail has both right and left ends 4
Since the 3 'and 43' rotate so as to escape right and left, damage can be prevented.

On the left and right sides of the support rail 43, rail guards 86 are provided. By the way, the support rails 43 ′ and 43 ′ at the right and left ends are connected to the inner support rails 4.
When the work rails 3 are operatively connected to each other, the right and left end support rails 43 'and 43' are the most protruding parts in the left and right direction in the seedling planting work machine 4. Support rail 43 '
43 'receives the lower end of the placed seedling,
Since the rails serve as support rails for the left and right movement of the seedling placing portions 42-1 and 42-8, if they are deformed by colliding with an external one, they will hinder the planting operation. Therefore, rail guard 86.8
Numeral 6 is provided outside the left and right end support rails 43 'and 43' for guarding.

The rail guards 86 are provided as shown in FIG. That is,
The supports 86 are fixed to brackets 87 fixed to the connecting pipes 40b and the planting transmission frames 40c on the left and right ends, and the floats 48, 48, 49 are fixed to the connecting pipes 40b. .Float support pipe 4 for fixing float support arms 40i for rotatingly supporting 49.
It is slidably supported in and within 0j. The rail guard 86 has an F-shape in plan view, and two support portions 86a and 86b extending in the left-right direction from the side frame portion 86c in the front-rear direction are formed to flow with the support pipe 88. −
(The rear support portion 86b is loosely fitted into the float support pipe 40j). The support pipe 88 into which the front support portion 86a fits is provided with a slide fixing operation portion 89, which is in the working state, where the support rail 43 'is guarded, and which moves left and right inward from the position (P1). The rail guard 86 can be slid and fixed at the position (P2). In the slide fixing operation section 89, a locking pin 89b having a knob 89a mounted on a U-shaped member fixed to the support pipe 88 is slidably mounted, and the locking pin 89b is provided on the support pipe 89 by a spring 89c. Biased into the pin hole. The locking pin 89b fixes the rail guard 86 so as not to slide when it is inserted into a locking hole provided in the front support portion 86a of the rail guard 86. To slide the rail guard 86 in the left-right direction, simply grasp the knob 89a and pull it out against the bias of the spring 89c, and the tip of the locking pin 89b locks the rail guard 86. It can slide out of the hole. Ray
The locking hole of the rudder 86 is provided at a position where the rail guard 86 is fixed at least at the (P1) position.

The rail guards 86, 86 have side frame portions 86c, which are provided horizontally in the front and rear direction, and the rear side is below the support rails 43 ', 43' in side view. It is located in the vicinity, and the rear end is a support rail 43 '/ 4.
3 '; 43 is provided in a shape bent upward along the lower shape. It is to be noted that FIGS.
Thus, the rail guards 86 are supported by the support rails in a side view.
43 '· 43'; located at a lower position that does not overlap with 43
Have been. Then, the support rails 43 '/ 4
In fold folding and record of 3 '- Ruga - slide of de 86-86 is able to move independently of each other. Also, at the position (P1) where the left and right support rails 43 'connected and fixed to the inner support rail 43 so as to be operable are guarded.
Side frame portions 86c of the lugade 86
Are provided on the left and right outer sides of the support rails 43 'and 43' in plan view. And right and left support rail 4
When the 3 'is pulled out to the left and right so as to be rotatable (when sliding from P3 to P4), the left and right ends of the left and right support rails 43' are the side frames of the rail guard. -Overlap on the rubber parts 86c. Therefore, when the rail guards 86 are in the position (P1), the right and left support rails 43 'and 43' are turned downward to switch from the folded state to the connected state. Stopper to stop the pivot from lowering more than necessary
Act as Further, when the rail guards 86 are slid to the left and right inner positions (P2),
The left and right outer end positions of the side frame portions 86c and 86c of the leg guard are the inner support rail 43 where the left and right outer rails are exposed by folding the left and right support rails 43 'and 43'. The left and right outer ends of the inner support rail 43 are located slightly left and right outer sides from the left and right outer ends, and the right and left outer ends of the inner support rail 43 are viewed from the side.
And overlaps with the memory portions 86c. The left and right outer end positions of the side frame portions 86c of the rail guard are substantially the same as or slightly outside the left and right outer end positions of the right and left outer end studs 41. I do.

The drawing markers 52 may be provided on the left and right sides of the seedling transplanter 4 instead of on the left and right sides of the traveling vehicle body 2. In this case, as shown in FIG. 17, a marker arm 5 provided with drawing action members 52'a and 52a at the distal end portion.
The 2'b and 52'b are rotatably attached to the support portions 86a of the rail guards 86 slidably provided on the left and right inner sides. When the rail guards 86 are slid left and right inward to reduce the left and right width of the seedling transplanter 4 when attached in this manner, the drawing markers 52'.5
2 'also moves right and left inward. Therefore, the turning fulcrum side of the marker arms 52'b and 52'b can be slid inward to the left and right, so that the marker arms 52'b.
Without extending the length of 52'b, it is possible to move the drawing markers 52 'and 52' to the left and right inside when the width is reduced. In the drawing, reference numeral 52'c denotes a coil forming portion of a wire rod for connecting the drawing action body 52'a and the marker arm 52'b, and 52'd denotes a marker arm 52. A pivot mounting portion which is fixed to the base of 'b and is rotatably attached to the rail guard support portion 86a, 52'e is a marker.
A marker arm rotating shaft for rotatably connecting the arm 52'b to the rail guard supporting portion 86a, 52'f is an inner end on the other end side of the hydraulic cylinder 35 on the piston side. And the outer end is connected to the cylinder side with a marker arm pulling wire. The inner end of the wire 52'f is connected to the marker arm pivot mounting portion 52'd. Mark from the pivot point
The outer side is fixed to the bracket 52'g fixed to the rail guard support portion 86a, and the inner is connected to the hydraulic cylinder 35 in conjunction with the raising operation of the seedling transplanter 4. Marker arm 5 that is pulled to the side and is in a lying position
2'b is raised to the upright posture, and the inner is returned to the marker arm 52'b side in conjunction with the lowering operation of the seedling transplanter 4, so that the inner side can be turned over. Reference numeral 52'h denotes a marker arm sideways biasing spring, one end of which is provided with a marker for the pivot point of the marker arm pivot mounting portion 52'd.
The other end is hooked on the bracket 52'g, and the other end is hooked on the bracket 52'g.
The arm 52'b is urged to a sideways posture. Therefore, the left and right inner wires 52'f and 52'f are separately provided so that the lock arms 52'b and 52'b can be locked in the upright posture, so that the left and right wires 52'f and 52'b can be locked. The drawing markers 52 'and 52' can be switched between a drawing operation state (marker arm sideways posture) and a non-drawing operation state.

Thus, as described above, this rice transplanter is configured such that the left and right widths of the seedling transplanter 4 can be reduced, and the right and left outer streaks of the left and right reciprocating seedling tables 42 provided in the seedling transplanter are mounted. The support rails are provided so that the parts 42-1 and 42-8 can be moved to the left and right inside, and receive the lower end of the seedling placed on the seedling mounting table 42.
43 '· 43'; located on the left and right outer sides of 43 and viewed from the side
At the support rails 43 ', 43';
Guard the left and right ends 43 'and 43' of the support rail in position.
In addition to the rail guards 86,
Le of the left and right end portions 43 ', 43' is constituted by a bolt 81
Upper side separated from rail guards 86
Is pivoted foldably provided on the left and right inside to, Le - Le
Guide - a de 86-86 slidably configured to the left and right inside.

Therefore, when the width of the rice transplanter is reduced in the left and right direction, the seedling mounting portions 42-1 and 42 of the outer left and right strips of the seedling mounting table are reduced.
After moving -8 to the left and right inside, the left and right end portions 43 'and 43' of the support rail are rotated upward around the rotation shaft 81 to the left.
This is performed by folding inward and sliding the rail guards 86 left and right inward. In this case, Les - Ruga -
Does 86, 86 are supported rails at the left and right ends 43 '
43 'is provided at a lower position which does not overlap with the support rail.
The left and right ends 43 ′ and 43 ′ are composed of bolts 81.
Upward away from the rail guards 86 around the rotation axis
Because it rotates, the support rail left and right ends 43 '
After moving to the left and right inside, the rail guard 86
On the contrary, even when moving to the right inside, the rail guard 86
After moving 86 to the inside left and right, both ends of the support rail
Even when moving 43 ', 43' to the left and right inside, support
Rail left and right ends 43 ', 43' and rail guard 86
Both can not interfere with the movement to the left and right inside with 86,
You can move from any of them.

Therefore, when the width of the left and right sides is reduced ,
Such erroneous operation can be prevented, and compactness can be improved when the left and right widths are reduced, and space saving can be improved when the machine is transported or stored in a warehouse.

[Brief description of the drawings]

FIG. 1 is a side view of a riding rice transplanter.

FIG. 2 is a plan view of the riding rice transplanter.

FIG. 3 is a plan view showing a transmission unit configuration of the traveling vehicle body.

FIG. 4 is a plan view showing a transmission unit configuration of the seedling planting work machine.

FIG. 5 is a side view of the riding rice transplanter in a state where the lateral width of the seedling planting machine is reduced.

FIG. 6 is a plan view of the riding rice transplanter in a state where the lateral width of the seedling planting machine is narrowed.

FIG. 7 is a rear view showing a part of the front side of the seedling mounting table in a state where the seedling mounting portions of the left and right ends are unfolded and connected.

FIG. 8 is a front view showing a part of the rear side of the seedling mounting table in a state where the seedling mounting portions of the left and right ends are unfolded and connected.

FIG. 9 is a side view of a state in which the seedling rests of the left and right ends are folded.

FIG. 10 is a cross-sectional view of a state in which the seedling rests on both right and left ends are folded.

FIG. 11 is a cross-sectional view showing a configuration of a portion that is connected to an inner seedling mounting portion at an upper side in a state where the seedling mounting portions at both right and left ends are deployed.

FIG. 12 is a cross-sectional view showing a configuration of a portion that is connected to an inner seedling mounting portion on a lower side in a state where the seedling mounting portions on both right and left ends are deployed.

FIG. 13 is a cross-sectional view illustrating a configuration of a temporary fixing portion of a member that is connected to the inner seedling mounting portion in a state where the seedling mounting portions on both right and left ends are deployed.

FIG. 14 is a cross-sectional view of a portion that receives and supports the folded seedling rests at the left and right ends.

FIG. 15 is a front view showing a folded configuration of both right and left ends of the support rail.

FIG. 16 is a plan view showing a configuration of a rail guard.

FIG. 17 is a perspective view showing a configuration when a drawing marker is attached to a seedling transplanter side.

FIG. 18 is a front view showing the supply of seedlings from the seedling supply cart on the ridge to the spare seedling mounting table on the rice transplanter.

FIG. 19 is a partial cross-sectional front view showing a configuration of a spare seedling mounting table.

FIG. 20 is a rear view showing a folding configuration of the spare seedling mounting table.

[Explanation of symbols]

1: Riding rice transplanter 2: traveling vehicle body 3: lifting link device 4: seedling planting work machine 5: fertilizer application device 6.6: front wheel 7.7: rear wheel 21: step 42: seedling mounting table 42-1 to 8: Seedling placement section 42-1 · 42-8: Seedling placement section of left and right outermost end strips 43: Support rail 43 ′ · 43 ′: Support rail left / right end sections 81: Bolts (rotating shafts) 86 ・ 86: Rail guard

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-66008 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01C 11/02 350-353 A01C 11/02 311

Claims (1)

(57) [Claims] In a rice transplanter configured such that the left and right widths of the seedling planting machine can be reduced, the left and right outer streaks of the reciprocating left and right seedling table provided in the seedling planting machine are arranged in the left and right inner sides. The support rail is located movably on the left and right sides of the support rail that receives the lower end of the seedling placed on the seedling mounting table, and is viewed from the side.
-Attach the left and right ends of the support rail to positions that do not overlap with the rail.
In addition to providing a rail guard for driving, the left and right ends of the support rail are rotated around the rotation axis away from the rail guard.
It is not provided to be folded to the left and right inward, Le - Ruga - rice transplanter, characterized in that the de <br/> was slidably configured to the left and right inside.