JP3520536B2 - Riding rice transplanter - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding type rice transplanter. 2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Application Laid-Open No. 4-45706, a plurality of seedlings are provided on the rear side of a traveling vehicle body having a pair of left and right steering front wheels and a pair of left and right rear wheels. In a riding rice transplanter equipped with a seedling transplanter, the passing position of the front wheel and the rear wheel of the traveling vehicle body passes between the same seedling mounting stripes with respect to the position of the seedling transplantation by the seedling transplanter. There has been a riding rice transplanter provided with a rear wheel that can be moved up and down in accordance with a change in the grounding load of the left and right wheels so that the left and right wheels always maintain the grounded state. [0003] Conventionally, the rear wheel is configured to be able to move up and down in response to a change in the grounding load of the left and right wheels so that the right and left wheels always maintain the grounded state. Although the left and right inclination of the vehicle body was reduced and the running stability was good, there was a problem in applying it directly to a large rice transplanter. In order to solve the above-mentioned problems, the present invention is directed to a traveling vehicle having a pair of left and right steering front wheels 6.6 and a pair of left and right rear wheels 7.7. Two behind two
Center floats 48, 48 and left and right outer sides
Right side floats 49, multiple planting devices 41 ...
Are mounted in the lateral direction of the fuselage and mounted on a seedling transplanter 4 for planting a plurality of seedlings. set as the wheel passes the position of the front wheels 6, 6 and the rear wheel 7, 7 of the vehicle body 2 is passed between seedling planting Article PL1~PL8
In addition, the left and right auxiliary wheels 7 ', 7' having a diameter smaller than the wheel diameter of the left and right rear wheels 7, 7 are separated from each other by one seedling PL2, PL7 on each outer side of the left and right rear wheels 7, 7. provided arranged so as to ground, the left and right rear wheels 7, 7 are two centers furo
Left and right side floats 49 on the outside than the port 48
・ Arranged in front of the inside of 49 , left and right auxiliary wheels 7 '
7 ′ is a rear wheel gear case 1 disposed in front of the left and right side floats 49, 49 , and provided in a freely rotatable manner.
The left and right rear wheels 7, 7 and the left and right auxiliary wheels 7 ', 7' are mounted on the left and right rear wheel axles 14a, 14a projecting from 4.14, respectively. And the right auxiliary wheel 7 'moves up and down reciprocally according to a change in the ground contact load so as to maintain the ground contact state.
Parts that project from the bottom of
-Placed in front of the floats 48
Body 2 has left and right sides of main step 21 on both sides of seat 20
Right step portions 21a are provided, and the right and left step portions are provided.
21a, left and right expansion steps 22
22 to cover the upper side of the left and right auxiliary wheels 7 ', 7'
The rice transplanter was arranged as follows. [0005] The function and effect of the present invention is to provide a riding rice transplanter according to the present invention.
The front wheels 6.6 and the rear wheels 7 of the traveling vehicle body 2 with respect to the PL8 position
The right and left rear wheels 7.7 have smaller diameters than the left and right rear wheels 7.7 so that the wheel passing position of 7 passes between the seedling attachment lines PL1 to PL8. The left and right rear wheels 7.7 are arranged so as to be in contact with the ground at a position separated by one seedling attachment line PL2, PL7 on each outer side of the two.
Left and right sides outside the center floats 48
The left and right auxiliary wheels 7 ′ and 7 ′ are arranged in front of the floats 49 and 49, respectively, and the left and right side floats 49.4
Was placed in front of 9, and left and right rear wheel axle 14a projecting from a rear wheel gear case 14, 14 provided in a freely rolling
14a, left and right rear wheels 7, 7 and left and right auxiliary wheels 7 '
7 'is mounted, and the left rear wheel 7 and the left auxiliary wheel 7' and the right rear wheel 7 and the right auxiliary wheel 7 'move up and down reciprocally according to the change of the ground contact load so as to maintain the ground contact state. Because of the configuration, a pair of left and right rear wheels 7, 7 and left and right auxiliary wheels 7 ', 7' that contact the ground at a position separated by one seedling attachment PL2, PL7 on the outside of each of the left and right rear wheels 7, 7 with a wide left and right interval. The rear wheel gear case 1 is configured to run while supporting the vehicle body with the wheels 7, 7, 7 ', 7' disposed therein, and to be freely rotatable.
The left rear wheel 7 and the left auxiliary wheel 7 'and the right rear wheel 7 and the right auxiliary wheel 7' which are respectively mounted on the left and right rear wheel axles 14a and 14a projecting from the four and fourteen and are arranged at wide intervals on the left and right are grounded. In response to the change, the vehicle reciprocally moves up and down to maintain the ground contact state, thereby improving running stability. In addition, the left and right rear wheels 7.7 are larger than the two center floats 48
Also disposed in front of the inner side than the right side the float 49, 49 at the outer side, the left and right auxiliary wheels 7 ', 7' are each lateral Sai
Having disposed in front of Dofuroto 49-49, center float 48 and support adjacent each left and right rear wheels 7, 7 of the large-diameter
By arranging the floats 48 and 49 between the vehicle body 2 and the floats 49 and 49,
Even when the floats 48, 49 are arranged close to the traveling vehicle body 2, the left and right auxiliary wheels 7 ', 7' arranged in front of the left and right side floats 49, 49 are smaller in diameter than the wheel diameters of the left and right rear wheels 7, 7. Therefore, the left and right side floats 49, 49 are less affected by the left and right auxiliary wheels 7 ', 7'. Work can be done. In addition, rear wheel gear
The lowermost part of the case 14
Because they are located in front of the center floats 48, 48,
For example, even if the rear wheel gear case 14 is rolled in a field with deep tillage and installed on a mud surface to disturb the field, the rear wheel gear case 14
Behind the lowermost part of the bases 14
Two center floats 48
Leveling the surface allows for proper rice transplanting. Also, traveling vehicles
Body 2 has left and right sides of main step 21 on both sides of seat 20
Right step portions 21a are provided, and the right and left step portions are provided.
21a, left and right expansion steps 22
22 to cover the upper side of the left and right auxiliary wheels 7 ', 7'
So that the left and right step portions 21 with a wide left and right width
a ・ 21a and left and right expansion steps 22 ・ 22
Various operations can be performed easily, and the left and right expansion steps 22
・ 22 also works as a wheel cover for left and right auxiliary wheels 7 'and 7'
To prevent mud from getting on steps 21a and 22
Work can be done safely. 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. Numeral 5 denotes a side-strip fertilizer, which has a horizontally long and integral hopper section 5a for accommodating fertilizer, and a fertilizer feeding section 5b... Are arranged on the front side of the seedling mounting table 42 and on the rear step part 21c, and each fertilizer feeding part 5b... Is connected to a fertilization guide part 5d. The fertilizer fed by the fertilizer feeding section 5b by the pressurized air flowing through the hoses 5c is conveyed to the fertilization guide sections 5d to be laterally fertilized. The pressurized air blown into the hoses 5c is generated by an electric blower 5e, and the pressurized air from the blower 5e is blown into a horizontally long pipe-shaped air chamber 5f. Pressure air is blown into the interior. The air chamber 5f is fixed to the upper end of the link base 31 so as to lie on the left and right.
, The supporting frame of the left and right expanding step 22 and the supporting frame of the spare seedling mounting table 50. The traveling vehicle body 2 comprises 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 mission 8 is arranged on the front side, and a front wheel axle frame 9 is provided from left and right sides of the mission 8.
9 is fixed, and the front wheel final cases 10 and 10 are connected to both ends of the frame 9.
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 and the front wheel final case 10 and the front wheels 6 are driven and rotated. Further, the front ends of the body frames 11 are fixed to the rear side of the transmission 8. The rear end of the vehicle body frame 11 is fixed to a horizontal frame 12 and the rear wheel rolling is fixed to a bearing portion at the center of the horizontal frame 12 so that the front and rear horizontal axes of the rear wheel frame 13 are fixed. The shaft 13a is fitted. Rear wheel gear cases 14 and 14 are fixed to the left and right ends of the rear wheel frame 13, and rear wheels 7 and 7 are mounted on rear wheel axles 14a and 14a that project laterally from the outside of the rear wheel gear cases 14 and 14. I have. Therefore, the mission 8 and the frame 11 ・ 1
1. For the body frame composed of the horizontal frame 12,
The rear wheel frame 13 to which the rear wheels 7, 7 are attached can be rolled around a 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. The rear wheel axles 14a, 14a have auxiliary wheels 7 ', which are slightly smaller than the wheel diameter of the rear wheels 7, 7 on the left and right outer sides together with the rear wheels 7.
7 'is attached. The power input to the transmission 8 is performed by the engine E supported on the frames 11 and 11 through the first belt transmission device 15 (15a: engine side pulley, 15a ': engine output shaft, 15b: hydraulic pump side pulley, 15b'). : A hydraulic pump drive shaft, 15c: a transmission belt) which is once transmitted to a hydraulic pump P fixed on the transmission 8, and from there to the input shaft of the transmission 8, a continuously variable transmission type second belt transmission 16 (16a: hydraulic pressure). Pump side split pulley, 16b: mission side split pulley, 16
b ': mission input shaft, 16c: transmission belt. The pulley widths of the split pulleys 16a and 16b are reciprocally adjusted by the sub-transmission lever. ) 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, an upper side of the engine E is covered with an engine cover 19, and a seat 20 is mounted on the cover 19. The front wheels 6, 6 are pivotally operated to rotate in the front-rear direction by rotating the handle 18. That is, the rotation of the handle 18 is transmitted to the 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 via the rods 18b. The front wheel final case 10, 10 has an upper case fixed to the front wheel axle frame 9, 9 and fixed to the vehicle body, and a lower case cannot move up and down with respect to the upper case and can turn left and right around the vertical axis. It is provided in. The rod 18b-1 is attached to the 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 the lower cases of the left and right front wheel final cases 10, 10 are turned to the right, and the front wheels 6, 6 are turned to the right. Conversely, if the handle 18 is turned to the left, the front wheels 6 turn to the left. As described above, the rear wheels 7, 7 are configured so that the rear wheel frame 13 can roll around the rear wheel rolling shaft 13a with respect to the body frames 11, 11. Accordingly, even when the left and right wheels of the rear wheels 7 locally pass through portions having different heights, the rear wheel frame 13 is moved by the rear wheel rolling shaft 13 in accordance with the change in the right and left ground loads.
Since the rolling motion is performed around a, the left and right wheels of the rear wheels 7 can always travel while maintaining the ground contact state. The grading of the wheel marks of the front wheels 6.6, the rear wheels 7.7, and the auxiliary wheels 7 ', 7' is performed by grading the front wheel marks by the center floats 48, 48, and the rear wheel marks by the wheel mark erasing rake 60. -Leveling is performed by 60, and the traces of the auxiliary wheels are leveled by the side floats 49, 49. Each of the front wheel 6, 6, the rear wheel 7, 7 and the auxiliary wheels 7 ', 7' has a boss fitted to the axle, spokes extending radially from the boss, and outer ends of the spokes. And a rim that connects the rim to a circle, and a tire is provided by molding rubber on the surface of the rim. In the front wheels 6, rubber is molded with a hollow portion provided on the outer peripheral side of the rim, and a lug is formed on the outer peripheral side of the front wheel in a C-shape in plan view. The rear wheels 7, 7 are shown in FIGS.
As shown in FIG. 9, the boss 7a and the spokes 7b
A wheel frame is composed of the rim 7c and the rim 7c. Further, a rubber portion 7d is molded on the surface of the rim 7c to provide a tire portion T, and a spike portion 7d 'is provided by the rubber portion 7d.
And a blade-shaped propulsion lug 7d "are integrally formed. The auxiliary wheels 7 'and 7' are provided with a boss 7'a and spokes 7'b and 7 'as shown in FIGS. b 7'b
And a rim 7'c to form a wheel frame. Further, a rubber portion 7'd is molded on the surface of the rim 7'c to provide a tire portion T ', and a lug portion 7' is provided by the rubber 7'd.
d 'are integrally formed. This lug part 7'd '
Are acting portions that increase the thrust corresponding to the propulsion lugs of the rear wheels 6 in the mud. Further, as shown in FIG. 13, since the lug portion 7'd 'does not protrude left and right from the tire portion T', the mud lifted by the lug portion 7'd 'does not fall to the left and right sides of the wheel. Therefore,
It does not disturb the mud surface at the planting strip position located on the left and right sides of the wheel. When the auxiliary wheels 7 'and 7' are arranged on the left and right sides of the outermost left and right outermost planting streak positions, the mud does not fall on the adjacent already planted seedlings planted in the previous process. Further, as shown in FIG. 14, the cross-sectional shape of the tire portion T 'is rubber molded into a flat shape on the left and right. Thereby, even if the rim 7'c is formed of a round pipe,
The contact area can be enlarged, appropriate buoyancy can be obtained even when the mud layer is deep, and sinking of the vehicle body can be prevented.
A ridge 7'd "is formed on the axle center side of the tire portion T '. This allows the tire portion T' to be mounted on the axle center side even if the cross-sectional shape of the tire portion T 'is flat left and right. 7e is a reinforcing plate, and the tread of the front wheels 6, 6 is narrower than the tread of the rear wheels 7, 7.
Seeding planting lines PL1 to P by the planting devices 41 of the seedling transplanting machine 4.
The wheel passing position with respect to the left and right position of L8 is determined by the rear wheel 7.7, the position between the seedlings between PL2 and PL3 and the seedling mounting PL.
6 and PL7, while the front wheels 6.6 are located on the inner side of the rear wheel passing position, that is, between the seedlings PL3 and PL4. Planting Article P
It is provided so as to pass through the strip position between L5 and PL6. In addition, the wheel passing position of the front wheels 6 is located between the seedlings PL3 and PL4 and between the seedlings PL5 and PL6 and is located on the left and right outer sides. Seedlings PL3 and PL6 are located closer to PL. The auxiliary wheels 7 'and 7' are 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 includes 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 expanding steps 22 are provided on both left and right outer sides of the left and right step portions 21a and from near the upper position of the front wheel axle to right and left outer positions of the rear step portion 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 '. 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. In addition, it is possible to get on and off the left and right step portions 21a from the front side of the fuselage. The left and right expanding steps 22 are provided on support frames 22a, 22a having their front ends fixed to the upper portions of the front wheel final cases 10, 10 and extending horizontally above and below the front wheels to the left and right. The stepped rear end is integrally formed with hook portions 22c at the rear end thereof so as to be rotatable about the horizontal shafts 22b. The extended step support shafts 22d provided at the air chamber 5f are integrally formed. 2
It is engaged with and supported by 2d. Extended step support shaft 2
2d is a bracket 22 fixed to the air chamber 5f.
e.22e. Therefore, the left and right expansion steps 22 can be rotated upward about the horizontal axis 22b. When mud is clogged between the auxiliary wheels 7 ', 7' and the rear wheels 7, 7, the right and left expansion steps 22, 22 are provided.
The upper part of the auxiliary wheels 7 ′ and 7 ′ can be opened by rotating the upper part of the auxiliary wheels 7 ′ and 7 ′. It is easy to scrape mud. Next, the configuration 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 disposed on the left side and a sub transmission lever and an accelerator lever are disposed on the right side on and around the display panel portion. The operator can operate the handle 18 while sitting on the seat 20 while easily changing the levers and visually checking the operation of the levers. It should be noted that a pedal operated by a driver stepping on the 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 provided with a frame 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 connection 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 on a support member fixed to the frame 11, and the piston rod side is connected to the distal 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 of 5 is performed, the elevating link device 3 moves up and down,
The seedling planting work 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 be able to freely roll left and right, and the transmission case 40 from the transmission case 8 of the traveling vehicle body 2 to the first planted transmission shaft 8 a and the intermediate gear case 8.
b, transmitted through the first planting transmission shaft 8c. The front portions of the planted transmission frames 40a, 40a extending rearward are connected to the left and right side portions of the transmission case 40, and the connecting pipes 4 are connected to the left and right outer portions of the front portions of the planted transmission frames 40a, 40a.
0b ・ 40b and right and left planting transmission frame 40c ・
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 ends of the respective transmission frames, and their rotation shafts 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 '.
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
The tip end of the fork-shaped seedling separation tool fixed to the planting tools 41b, 41b is rotated by the transmission mechanism in a in the direction opposite to the rotation of the rotating case 41a so that the tip of the fork-shaped seedling separating tool vertically deforms to draw an elliptical closed locus. I do. 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 tool of the planting tools 41b is moved. The seedlings supplied to the take-out port are separated and held, and when the seedlings reach the field, the seedlings held by the seedling separating tool are pushed out and planted in the field by seedling pushing mechanisms respectively provided in the planting tools 41b. 48 and 48 are center floats and 49.4
Reference numeral 9 denotes left and right side floats. These floats 48
49, 49, when the front part of the float is vertically movable, and when a part of the weight of the body is received by the grounding part when it is in contact with the mud surface of the field, and the body is advanced in the grounded state, Glide on the muddy surface. The two center floats 48 and 48 are used to level the planting position at the center 4
The four side floats 49 are provided so as to level the four left and right planting positions. 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. The front upper surfaces of these two center floats 48 are connected to each other by a connecting member, and a hydraulic valve 28 is attached to the connecting member. It comes in and out of the fixed valve case. When the seedling transplanter 4 is 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 valve 36 is switched in the direction in which the hydraulic cylinder 35 is extended, and the planting 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 the predetermined height, the operation of the hydraulic cylinder 35 stops and the planting work machine 4 rises. Stop. 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, and the hydraulic cylinder 3
The hydraulic valve 36 is switched in the direction in which 5 contracts, and the planting machine 4 is lowered. Then, as the planting machine 4 descends, the valve spool is pushed into the valve case, and when the planting machine 4 returns to the predetermined height, the hydraulic cylinder 35
Stops and the planting machine 4 stops descending. 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 of the field. The seedling to be planted is planted at a predetermined depth with respect to the topsoil of the field. Reference numeral 50 denotes a spare seedling mounting table on which seedlings to be supplied to the planting work machine 4 are placed. This spare seedling mounting table 50
Are provided on the rear side of the seat 20 and above the fertilizer application device 5 so that the seedlings can be placed side by side in a state of being housed in the seedling box C. The specific configuration is such that the right and left ends and the center of the seedling mounting rails 50a are connected to each other.
-Connected at 50b and the connected seedling mounting rail 50
a and 50a are fixedly supported by support frames 50c having fixed bases in the air chamber 5f.
The side cross-sectional shape is L on the upper surface of the seedling mounting rails 50a.
The seedling box guide frames 50a 'and 50a' in the shape of a letter are fixed, so that the seedling box C placed on the seedling mounting rails 50a and 50a is slidable in the left-right direction and is prevented from coming off in the front-back direction. I do. The rear seedling mounting rail 50a 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 placed on the side of the seedling mounting table 42 of the seedling transplanter 4. It can be placed in a slightly inclined state toward it. Thereby, it is easy to scoop up the seedlings from the seedling boxes placed on the seedling placing rails 50a and supply them to the seedling mounting table 42 of the seedling transplanter 4. In addition, seedling mounting rails 50a
The connecting frames 50e, 50e;
e, extension rails 50d and 50e connected to each other at 50e
d; 50d, 50d are rotatably connected around the front-rear axis by rotary connecting portions 50e, 50e, and their extension rails 50d
50d is provided so that it can be turned upward and folded inward. In addition, the extension rails 50d and 50d; 5
0d and 50d can also be configured to slide from the seedling mounting rails 50a and project left and right outward. Therefore, the seedling box mounted on the spare seedling mounting table 50 can be slid left and right with the seedling mounting rails 50a receiving the bottom of the front and rear ends of the seedling box with the longitudinal direction of the seedling box C facing forward and backward. Be placed on When placing the seedling box on the spare seedling mounting table 50, prepare a row seedling supply cart having a seedling mounting rail similar to that of the spare seedling loading table 50 on the ridge, and place a plurality of side-by-side rows on the row seedling supply cart. When the rice seedling box is placed and the rice transplanter 1 is worn sideways on the ridge, the end of the seedling mounting rail of the ridge seedling supply truck is connected to the seedling mounting rails 50a and 50a of the spare seedling mounting table 50.
The seedling box on the row seedling replenishing trolley is pushed to the side of the rice transplanter and slid and placed so as to match the left and right ends of a. The seedling mounting rails 50a and 50a of the spare seedling mounting table 50 have a width on which a number of seedling boxes corresponding to the number of seedlings to be mounted on the seedling mounting table 42 (eight in this embodiment) can be mounted. And extension rails 50d and 50d;
Each has a width in which half of the number of seedling boxes (four in this embodiment) placed on the seedling placing rails 50a and 50a can be placed, and the seedling placing rails 50a and 50a and the extension rails 50d and 50d. A total of 50d and 50d, which is twice as many as the number of seedlings mounted on the seedling mounting table 42 (16 in this embodiment).
) Seedling boxes. Numerals 51, 51 are provided on both the left and right sides of the front of the fuselage, and are positioned above the already-planted seedlings of the adjacent streak so that the seedlings being planted and the adjacently-planted seedlings are located. The interval between the seedlings and the attached seedlings is set at a predetermined interval. 5
Reference numeral 2 52 denotes a drawing marker, which slides the drawing marker body 52 a on the mud surface on the unplanted side during the work traveling when the planting work is performed by reciprocating in the field, and the center of the next travel work traveling path. A line is drawn. Numeral 53 denotes a center marker, which is provided at the center of the front end of the traveling vehicle body 2 in the left and right direction. If the center marker 53 is moved in accordance with the center line drawn by the drawing markers 52, the planting operation is performed at a predetermined line interval with respect to the adjacent line of the seedling planted during the previous step operation. You can run. As described above, this riding rice transplanter is a riding rice transplanter equipped with a seedling transplanter for planting a plurality of seedlings on the rear side of a traveling vehicle body having a pair of left and right steering front wheels and a pair of left and right rear wheels. The front and rear wheel passing positions of the traveling vehicle body are provided so as to pass between the seedling mounting lines with respect to the seedling mounting position of the seedling transplanter, and the front wheel wheel passing position is the rear wheel setting position. The rear wheels are provided so as to pass through the inner space between the left and right wheels, and the rear wheels are configured to be able to move up and down in response to changes in the grounding load of the left and right wheels so that the left and right wheels always maintain the ground contact state. Therefore, this riding rice transplanter is constructed so that the rear wheels can be moved up and down in accordance with changes in the grounding load of the left and right wheels so that the left and right wheels always maintain the grounded state, so that the running stability is good. It becomes. In addition, since the front wheel and the rear wheel are provided so as to pass between the different seedlings, the wheel marks are not larger than before, and the wheel marks can be sufficiently leveled to improve the leveling property. Furthermore, since the wheel passing position of the front wheel is provided so as to pass through the inner strip than the wheel passing position of the rear wheel, the turning radius is reduced and the headland planting width can be narrowed, thereby improving the working efficiency.

[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 configuration of a traveling vehicle body and a leveling device. FIG. 4 is a side view showing the turning operation of the left and right expanding steps. FIG. 5 is a partial plan view showing a configuration of a left-right expanding step. FIG. 6 is a side view showing a wheel configuration of a rear wheel. FIG. 7 is a sectional view taken along line S1-S1 of FIG. 8 is a sectional view taken along line S2-S2 of FIG. FIG. 9 is a sectional view taken along line S3-S3 of FIG. 12; FIG. 10 is a side view showing a configuration of an auxiliary wheel. FIG. 11 is a partial plan view showing a configuration of an auxiliary wheel. FIG. 12 is a sectional view taken along line S4-S4 of FIG. 17; FIG. 13 is a sectional view taken along line S5-S5 of FIG. 17; FIG. 14 is a sectional view taken along line S6-S6 of FIG. 17; [Explanation of symbols] 1: Riding rice transplanter 2: Car body 3: Elevating link device 4: Seedling transplanter 5: Fertilizer application device 6.6: Front wheel 7.7: Rear wheel 7 '・ 7': Auxiliary wheel 13: Rear wheel frame 13a: rear wheel rolling shaft 14.14: Rear wheel gear case 14a, 14a: left and right rear wheel axles 41 ...: Planting device 48: Center float 49: Side float PL1-PL8: Seedling attachment

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Rihiki Seike 1 Toya-cho, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. Agricultural Machinery Co., Ltd. Engineering Department (72) Inventor Hisashi Hisaya Kazuki Ehime Prefecture, Iyo-gun, Tobe-cho, Hachikura 1st Iseki Agricultural Machinery Co., Ltd. Technical Department (56) References JP-A-4-45706 (JP, A) JP-A-4-5129 (JP, A) JP-A-59-187709 (JP, A) JP-A-57-135220 (JP, U (Japanese) 1979-37419 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) A01C 11/02

Claims (1)

(57) [Claim 1] Two sections are provided at the rear side of a traveling body 2 having a pair of left and right steering front wheels 6.6 and a pair of left and right rear wheels 7.7.
Inter-floats 48, 48 and left and right provided on the left and right outer sides
In a riding rice transplanter equipped with side floats 49, 49 and a plurality of planting devices 41 provided in the lateral direction of the machine and planting a plurality of seedlings, a plurality of planting devices 41 of the seedling transplanting machine 4 are used. The wheel passing positions of the front wheels 6.6 and the rear wheels 7.7 of the traveling vehicle body 2 are provided so as to pass between the seedling attachment lines PL1 to PL8 with respect to the positions of the seedling attachment lines PL1 to PL8.
In addition, the left and right auxiliary wheels 7 ', 7' having a smaller diameter than the left and right rear wheels 7, 7 are separated by one seedling PL2, PL7 on each outer side of the left and right rear wheels 7, 7. provided arranged so as to ground, the left and right rear wheels 7, 7 are two centerflow
Left and right side floats 49.
It is located in front of the inside of 49 , and the left and right auxiliary wheels 7 '
7 'is a rear wheel gear case 14 which is disposed in front of the left and right side floats 49 and 49 and is freely rotatably provided.
The left and right rear wheels 7, 7 and the left and right auxiliary wheels 7 ', 7' are mounted on the left and right rear wheel axles 14a, 14a projecting from 14, respectively, so that the left rear wheel 7, the left auxiliary wheel 7 ', the right rear wheel 7, The right auxiliary wheel 7 'is configured to move reciprocally up and down in response to a change in the ground contact load so as to maintain the ground contact state.
Parts that project from the bottom of
-Placed in front of the floats 48
Body 2 has left and right sides of main step 21 on both sides of seat 20
Right step portions 21a are provided, and the right and left step portions are provided.
21a, left and right expansion steps 22
22 to cover the upper side of the left and right auxiliary wheels 7 ', 7'
Rice transplanter characterized by being arranged as follows.