JP3812591B2 - Passenger rice transplanter - Google Patents

Description

  The present invention relates to a riding type rice transplanter.

Conventionally, there has been 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.
JP-A-3-244303

  However, the conventional one has a so-called technical problem that makes it easy to replenish seedlings on a seedling stage of a seedling transplanter.

  The invention according to claim 1 is a seat provided on a traveling vehicle body 2 provided with a pair of left and right steering front wheels 6 and 6 and a pair of left and right rear wheels 7 and 7 and auxiliary wheels 7 'and 7' on the left and right outside thereof. The main step 21 is disposed on both the front side and the left and right sides of the vehicle 20, and a plurality of seedling mounting bases 42 having a plurality of seedling mounting surfaces 42-1 to 42-8 disposed in the left-right direction on the rear side of the traveling vehicle body 2 are provided. In a riding rice transplanter equipped with a seedling transplanter 4 for planting seedlings, left and right expansion steps 22 and 22 are arranged on both the left and right sides of the main step 21, and the outermost seedling mounting surfaces 42-1 and 42 of the seedling mounting table 42 are arranged. Rear that is provided so that both the left and right sides of the left and right extension steps 22 and 22 are positioned in front of the -8, and the step surface is higher than the main step 21 and covers the upper side of the rear wheels 7 and 7 on the rear side of the seat 20. Step part 21c is provided, and left and right expansion steps 22 and 22 are provided. The front part is provided at substantially the same height as the step surfaces of the left and right step parts 21a and 21a on the left and right sides of the seat 20 and the handle 18 of the main step 21, and the rear parts of the left and right extension steps 22 and 22 are made higher than the front part. It is arranged on the upper side of the left and right auxiliary wheels 7 ′ and 7 ′ and provided at substantially the same height as the step surface of the rear step portion 21c, and is provided on the lower side of the horizontally long hopper portion 5a for storing the fertilizer of the fertilizer application device 5. The fertilizer feeding part 5b is disposed at the rear part of the traveling vehicle body 2, and the riding rice transplanter is configured such that the left and right lengths of the hopper part 5a are shorter than the left and right lengths of the seedling stage 42 in a plan view.

  Therefore, the configuration of the traveling vehicle body 2 is provided with a pair of left and right rear wheels 7 and 7 and auxiliary wheels 7 ′ and 7 ′ on the left and right outer sides, but left and right extension steps 22 and 22 are arranged on both the left and right sides of the main step 21. The right and left expansion steps 22 and 22 are provided in front of the outermost left and right seedling mounting surfaces 42-1 and 42-8 of the seedling mounting table 42, and the main step is located behind the seat 20. A rear step portion 21c having a step surface higher than 21 and covering the upper side of the rear wheels 7 and 7 is provided. Front portions of the left and right extension steps 22 and 22 are left and right steps on the left and right sides of the seat 20 and the handle 18 of the main step 21, respectively. The rear step portions 21c are provided at substantially the same height as the step surfaces of the portions 21a and 21a, and the rear portions of the left and right extension steps 22 and 22 are arranged higher than the front portions and above the left and right auxiliary wheels 7 'and 7', respectively. Step Since it is provided at substantially the same height as the surface, a wide step surface is formed by the left and right step portions 21a and 21a of the main step 21 and the front portions of the left and right expansion steps 22 and 22, and the left and right expansion steps 22 and 22 are formed. The rear part is provided so as to cover the upper side of the auxiliary wheels 7 'and 7', and the rear parts of the left and right extension steps 22 and 22 are provided at substantially the same height as the step surface of the rear step part 21c. It is easy to replenish seedlings up to the outermost seedling mounting surfaces 42-1 and 42-8 of the seedling mounting base 42 of the seedling transplanter 4.

  Further, a horizontally long hopper portion 5a for storing fertilizer of the fertilizer application device 5 and a fertilizer feeding portion 5b provided below the fertilizer device 5 are disposed at the rear portion of the traveling vehicle body 2, and the left and right lengths of the hopper portion 5a are set as seedlings in a plan view. Since it is configured to be shorter than the left and right lengths of the mounting table 42, it is easy to supply seedlings to the seedling mounting table 42 of the seedling transplanting machine 4 with a simple configuration.

  According to the present invention, it is easy to replenish seedlings to the outermost seedling mounting surfaces 42-1 and 42-8 of the seedling mounting base 42 of the seedling transplanting machine 4, and the problem can be solved with a simple configuration. .

An embodiment of the present invention will be described with reference to the drawings.
The riding rice transplanter 1 is configured by mounting a seedling transplanter 4 via a lifting link device 3 that moves up and down on the rear side of the traveling vehicle body 2.

  Reference numeral 5 denotes a side strip fertilizer, a horizontally long and integral hopper portion 5a for storing fertilizer, and a fertilizer feeding portion 5b which is integrally provided in a horizontal row under the same number as the number of seedling planting under the seat 20 The fertilizer feeding part 5b, which is arranged on the front side of the seedling stage 42 on the side and on the rear step part 21c, and the fertilizer guide part 5d provided in the vicinity of each row planting place are connected by a hose 5c, The fertilizer fed by the fertilizer feeding section 5b ... is conveyed to the fertilizer application guide section 5d ... by side wind fertilization by the compressed air flowing in the hose 5c. The pressurized air blown into the hose 5c is blown up by an electric blower 5e, and the blown air from the blower 5e is blown into the horizontally long pipe-shaped air chamber 5f, and each hose 5c from the air chamber 5f. The wind is blown into the inside. The air chamber 5f is fixed to the upper ends of the link bases 31 and 31 so as to lie to the left and right. The mounting frame of each fertilizer feed-out part 5b, the support frame of the left and right expansion step 22, and the spare seedling stage 50 Also serves as a support frame.

  The traveling vehicle body 2 includes a pair of left and right front rotating wheels 6 and 6 for steering and a pair of left and right rear rotating wheels 7 and 7. Also, a transmission 8 is arranged on the front side, front wheel axle frames 9 and 9 are fixed from the left and right sides of the transmission 8, and front wheel final cases 10 and 10 are connected to both ends of the frames 9 and 9, respectively. Front wheels 6 and 6 are attached to front wheel axles 10a and 10a that protrude outward from the lower side of 10 and 10. The power in the mission 8 is transmitted by the transmission mechanisms in the front wheel axle frames 9, 9 and the front wheel final cases 10, 10, and the front wheels 6, 6 are driven to rotate. Further, the front end portions of the vehicle body frames 11 and 11 are fixed to the rear side portion of the mission 8. The rear end of the body frame 11, 11 is fixed to the horizontal frame 12, and the rear wheel rolling is fixed to the bearing portion at the center of the horizontal frame 12 at the center of the left and right sides of the rear wheel frame 13 with the axis centered in the horizontal direction. 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 attached to rear wheel axles 14 a and 14 a that protrude laterally from the outer side of the rear wheel gear cases 14 and 14. Yes. Therefore, the rear wheel frame 13 to which the rear wheels 7 and 7 are attached can roll around the rear wheel rolling shaft 13a with respect to the vehicle body frame composed of the mission 8, the frames 11 and 11, and the horizontal frame 12. Yes. The power in the transmission 8 is transmitted from the rear side to the left and right rear wheel gear cases 14 and 14 by the rear wheel transmission shafts 14a and 14a, and the rear wheels 7 and 7 are driven and rotated. The rear wheel axles 14a and 14a are attached with auxiliary wheels 7 'and 7' having a slightly smaller diameter than the wheel diameter of the rear wheels 7 and 7 along with the rear wheels 7 and 7. 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: pulley on the engine side, 15a ′: engine output shaft, 15b: pulley on the hydraulic pump side, 15b ′). Is transmitted to a hydraulic pump P fixed on the transmission 8 by a hydraulic pump drive shaft, 15c: a transmission belt), and from there to a continuously variable second belt transmission 16 (16a: hydraulic pressure) to the input shaft of the transmission 8 Pump side split pulley, 16b: mission side split pulley, 16b ': mission input shaft, 16c: transmission belt, pulley width of both split pulleys 16a and 16b is adjusted by the auxiliary transmission lever. )) So that the gear can be shifted continuously 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 the third belt transmission device 17. 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 front wheels 6 and 6 can be rotated 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 at the front bottom portion of the mission 8, and is further transmitted to the left and right front wheel final cases 10 and 10 via the rods 18b and 18b. The front wheel final cases 10 and 10 are fixed to the vehicle body with the upper case fixed to the front wheel axle frames 9 and 9, and the lower case cannot be moved up and down with respect to the upper case and can be rotated left and right around the vertical axis. Is provided. The rods 18b and 18b are connected to an arm provided integrally with the lower case. Therefore, if the handle 18 is rotated to the right, the steering arm 18a is rotated to the right, and the lower cases of the left and right front wheel final cases 10 and 10 are rotated to the right and the front wheels 6 and 6 are rotated to the right. Conversely, if the handle 18 is turned to the left, the front wheels 6 and 6 are turned to the left.

  As described above, the rear wheels 7, 7 are configured such that the rear wheel frame 13 can roll around the rear wheel rolling shaft 13a with respect to the vehicle body frames 11, 11. As a result, even when the left and right wheels of the rear wheels 7 and 7 pass locally at different heights, the rear wheel frame 13 rotates around the rear wheel rolling shaft 13a according to changes in the left and right grounding loads. Therefore, the left and right wheels of the rear wheels 7, 7 can always travel while maintaining a ground contact state.

  The front wheel 6 · 6, the rear wheel 7 · 7, and the auxiliary wheel 7 ′ · 7 ′ are tracked by the center float 48/48 and the rear wheel track is removed by the wheel mark erasing rakes 60/60. The ground is leveled, and the auxiliary wheel marks are leveled by the side floats 49 and 49.

  By the way, the treads of the front wheels 6 and 6 are provided narrower than the treads of the rear wheels 7 and 7. Further, the wheel passing positions with respect to the left and right positions of the seedling planting strips PL1 to PL8 by the planting device 41 of the seedling transplanting machine 4 are as follows. Whereas it passes through the inter-growth position between the planting lines PL6 and PL7, the front wheel 6 and 6 has a position between the inner side of the rear wheel passing position, that is, the line between the seedling planting lines PL3 and PL4. It is provided so as to pass through the position and the inter-row position between the seedling planting strips PL5 and PL6. In addition, the wheel passage position of the front wheels 6 and 6 is in the position of the streak between the seedling planting strips PL3 and PL4 and in the position of the streak between the seedling planting strips PL5 and PL6. It is arranged near the seedling planting line PL3 / PL6. In addition, the auxiliary wheels 7 'and 7' are attached so as to pass through the inter-row position between the seedling planting strips PL2 and PL3 and the inter-row position between the seedling planting strips PL6 and PL7.

  The traveling vehicle body 2 is provided with a main step 21 that is lower than the seat 20 and covers the upper side of the front wheels 6 and 6. The step 21 includes left and right step portions 21 a and 21 a on both the left and right sides of the seat 20 and the handle 18, and a central step portion 21 b that connects the left and right step portions on the front side of the seat 20. Further, 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 extends to the left and right so as to connect the rear end portions of the left and right step portions. Is provided.

  Further, left and right extension steps 22 and 22 are provided on both the left and right outer sides of the left and right step portions 21a and 21a from the vicinity of the front wheel axle upper position to the rear step portion 21c on the left and right outer positions. The side portions of the left and right step portions 21a and 21a are provided at substantially the same height as the step surfaces of the left and right step portions 21a and 21a, and the rear portion is provided with a height that is substantially the same as the step surface of the rear step portion 21c. ing. The expansion steps 22 and 22 are provided to cover the auxiliary wheels 7 'and 7'. In addition, riding steps 23 and 23 are fixed to the left and right outer portions of the expansion steps 22 and 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 and 21a from the front side of the machine body.

  Next, the configuration around the handle will be described below. A lower side of the handle 18 is covered with a post cover 27, and a display panel portion for displaying various operating states is provided on the upper portion of the post cover 27. Further, a main transmission lever and a rear wheel differential lock lever are arranged on the left side, and an auxiliary transmission lever and an accelerator lever are arranged on the right side of the display panel and its surroundings. The operator can operate the handle 18 while sitting on the seat 20 while easily changing the levers and visually confirming the lever operation. In addition, a pedal that the operator steps on with a 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 / lowering link device 3 includes an upper link 32 and a lower link 33/33 that are rotatably attached to a link base 31 fixed to the rear side of the frame 11/11, and a vertical link at a rear end portion of the upper / lower links. 34 are connected. And the connecting shaft 40a fixed to the transmission case 40 of the seedling planting work machine 4 is rotatably connected to the bearing part protruding rearward from the lower end of the vertical link 34, so that the seedling planting work machine 4 moves in the traveling direction. It is attached to the left and right to be rotatable. The base side of the hydraulic cylinder 35 is pivotally supported on a support member fixed to the frames 11 and 11, and the piston rod side is connected to the tip of a swing arm 31a extending downward integrally with the base of the upper link 31 via a spring. Yes. When the hydraulic cylinder 35 is expanded and contracted, the lifting / lowering link device 3 is lifted / lowered, and the seedling planting work machine 4 is lifted / lowered. The hydraulic cylinder 35 is switched by a hydraulic valve 36.

The seedling transplanter 4 has a configuration of eight-row planting.
First, the transmission case 40 is connected to the lifting / lowering link device 3 so as to freely roll left and right, and from the transmission case 8 of the traveling vehicle body 2 via the first planting transmission shaft 8a, the intermediate gear case 8b, and the first planting transmission shaft 8c. Is transmitted. Front portions of planting transmission frames 40a and 40a extending rearward are connected to the left and right side portions of the transmission case 40, and further, left and right outer portions of the front portions of the planting transmission frames 40a and 40a are connected via connecting pipes 40b and 40b. The front parts of the planting transmission frames 40c and 40c are connected to the left and right. The four planting transmission frames 40a, 40a, 40c, and 40c are juxtaposed in the front-rear direction at a predetermined interval, and the planting drive shafts 41a ′ project from the both sides of the rear end of each transmission frame, and the rotation shaft 41a. The rotating cases 41a of the planting devices 41 are mounted so as to be driven to rotate.

  The planting device 41 includes a rotation case 41a connected to the planting drive shaft 41a ', and two planting tools 41b and 41b attached to both ends of the rotation case 41a. The planting tools 41b and 41b are rotated in the opposite direction to the rotation of the rotating case 41a by the transmission mechanism in the rotating case 41a and the tip of the fork-shaped seedling separating tool fixed to the planting tools 41b and 41b is deformed up and down. Operates to draw an elliptical closed locus. As a result, the seedling mounting table 42 reciprocates left and right, and the seedlings on the seedling mounting surfaces 42-1 to 42-8 are sequentially supplied to the seedling dividing ports 43c of the support rail 43, while the seedlings of the planting tools 41b. The separation tool separates and holds the seedlings supplied to the seedling outlet, and when reaching the field, the seedlings held by the seedling separation tool are pushed out by the seedling push-out mechanisms respectively provided in the planting tools 41b. Plant.

  48 and 48 are center floats, and 49 and 49 are left and right side floats. These floats 48, 49, and 49 are mounted so that the front part of the float can be moved up and down. In addition, when the ground is in contact with the mud surface of the field, a part of the weight of the body is received by this grounding part, and the body is moved forward in the grounded state. As it advances, it slides while leveling the mud surface. Two center floats 48 and 48 are provided to level the planting position of the central four strips, and two side floats 49 and 49 are provided to level the planting positions of the left and right four strips. The center floats 48 and 48 are also sensors that detect 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 and 48 are connected to each other by a connecting member, a hydraulic valve 28 is attached to the connecting member, and the valve spool is attached to the machine frame of the seedling transplanter by the vertical movement of the front part of the float. It comes in and out of the fixed valve case. When the seedling transplanter 4 becomes lower than a 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 extended in the direction of extending the hydraulic cylinder 35. Is switched and the planting machine 4 is raised. When the planting work machine 4 is raised, 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 stops and the planting work machine 4 rises. Stop. On the contrary, when the seedling transplanter 4 becomes higher than a predetermined height with respect to the topsoil, the front end of the center float 48 moves down, the valve spool is pulled out of the valve case, and the hydraulic cylinder 35 is contracted. The hydraulic valve 36 is switched and the planting machine 4 is lowered. Then, when the planting work machine 4 is lowered, 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 is stopped and the planting work machine 4 is lowered. Stop. 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, so that the seedling transplanter 4 mounted on the seedling transplanter 4. The seedlings to be planted are planted at a predetermined depth with respect to the topsoil of the field.

  Reference numeral 50 denotes a preliminary seedling stage on which seedlings to be replenished to the planting work machine 4 are placed. The preliminary seedling mounting table 50 is provided so that the seedlings can be placed on the left and right sides and in the state of being stored in the seedling box C on the rear side of the seat 20 and above the fertilizer application device 5. Specifically, the seedling mounting rails 50a and 50a are connected to each other at the left and right ends and the center by connecting frames 50b, 50b and 50b, and the bases of the connected seedling mounting rails 50a and 50a are fixed to the air chamber 5f. It is fixedly supported by the support frames 50c, 50c. The seedling box guide frames 50a 'and 50a' whose side cross-sectional shape is L-shaped are fixed to the upper surfaces of the seedling mounting rails 50a and 50a, so that the seedling boxes C placed on the seedling mounting rails 50a and 50a are left and right. It is slidable in the direction and restricted so that it does not come off in the front-rear direction. In addition, the rear seedling mounting rail 50a is provided slightly lower than the front seedling mounting rail 50a, and the seedling box C placed on the seedling mounting rails 50a, 50a is provided on the seedling mounting base 42 side of the seedling transplanting machine 4. It can be placed in a slightly inclined state. This facilitates the operation of scooping the seedlings from the seedling boxes placed on the seedling mounting rails 50a and 50a and supplying the seedlings to the seedling mounting base 42 of the seedling transplanting machine 4. In addition, extension rails 50d and 50d; 50d and 50d connected to each other by connecting frames 50e and 50e; 50e and 50e are respectively connected to the left and right ends of the seedling mounting rails 50a and 50a. It is provided so that it can be rotated around '· 50f', and its extension rails 50d, 50d,... Note that the extension rails 50d and 50d; 50d and 50d can be configured to slide from the seedling mounting rails 50a and 50a so as to protrude leftward and rightward.

  Therefore, the seedling box C placed on the preliminary seedling mounting stand 50 is slidable to the left and right as the seedling mounting rails 50a and 50a receive the bottoms of the front and rear ends of the seedling box with the longitudinal direction of the seedling box C facing forward and backward. Can be placed. When the seedling boxes C are placed on the spare seedling stage 50, a seedling replenishing carriage 70 having seedling placement rails 70a and 70a similar to the preliminary seedling stage 50 is prepared on the basket, and this seedling supplementing carriage is prepared. When a plurality of seedling boxes C are placed side by side on 70 and the rice transplanter 1 is worn sideways on the heel, the end portions of the seedling mounting rails 70a and 70a of the seedling replenishing carriage 70 are attached to the spare seedling mounting base 50. The seedling boxes 50a and 50a are aligned with the left and right ends, and the seedling box on the seedling supply cart 70 is pushed and slid onto the rice transplanter side. Further, seedling box stopper pins 50g, 50g; 50g, 50g that can be moved in and out are provided on the left and right outer ends of the extension rails 50d, 50d; ing. The seedling box stopper pins 50g are penetrated through pin holes formed in the upper and lower sides of the rail, and a pin 50h integrated with the stopper pin is urged upward by a spring 50i in the rail hollow portion. Accordingly, the stopper pins 50g are normally protruded upward from the upper surface of the rail by the spring 50i. However, the stopper pins 50g are retracted into the rail when pressed downward. Therefore, when the end portions of the seedling mounting rails 70a and 70a of the seedling supply cart 70 are set to be in a state where the seedling mounting rails 50a and 50a of the preliminary seedling mounting platform 50 are placed in the mountable state, the seedling supply cart 70 is set. The stopper pin push-down plates 70b and 70b integrated with the ends of the seedling loading rails 70a and 70a are pushed down by the seedling box stopper pins 50g and 50g, and the seedling box C on the seedling supply cart 70 is replaced with a spare seedling on the rice transplanter side. It will be in the state which can be extruded and slid to the seedling mounting rail 50a * 50a of the mounting base 50. FIG. It is stopped by seedling box stopper pins 50g and 50g protruding from the opposite rail end so as not to fall from the seedling box opposite rail end pushed and slid onto the seedling loading rails 50a and 50a of the preliminary seedling loading table 50.

  Further, the seedling mounting rails 50a and 50a of the preliminary seedling mounting base 50 have a width on which the seedling boxes C... For the number of shoots placed on the seedling mounting base 42 (eight in this embodiment) can be placed. Further, the extension rails 50d, 50d; 50d, 50d have widths for placing the seedling boxes C each of which is half the number of seedling boxes (four in this embodiment) placed on the seedling mounting rails 50a, 50a. And the seedling placement rails 50a and 50a and the extension rails 50d and 50d; 50d and 50d in total, twice the number of seedlings placed on the seedling stage 42 (in this embodiment, 16 seedling boxes C). It is provided so that it can be placed.

  Alignment markers 51 and 51 are provided on both the left and right sides of the front part of the aircraft. By positioning this marker above the existing seedlings on the adjacent strips, Is set to a predetermined interval.

  52 and 52 are drawing markers, and when planting by reciprocating in the field, the drawing marker body 52a is slid on the muddy surface on the non-planting side during the operation and the center of the next stroke work travel path. The line is drawn.

  A center marker 53 is provided at the left and right center position of the front end portion of the traveling vehicle body 2. If this center marker 53 is planted according to the center line drawn by the drawing markers 52 and 52, planting work is performed at predetermined intervals with respect to the adjacent strips of seedlings planted during the previous stroke work traveling. Can travel.

  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. In addition, a horizontally long standby seedling mount that can be mounted side by side with the spare seedlings to be replenished to the seedling transplanter is arranged in the upper left and right direction of the rear wheel, and the left and right wheels are always in contact with the ground. In order to maintain it, it was configured to be able to move up and down according to changes in the ground load of the left and right wheels.

  Therefore, this riding rice transplanter is configured so that the rear wheels can move up and down according to changes in the ground load of the left and right wheels so that the left and right wheels are always in contact with the ground. Since the preliminary seedling stage does not tilt greatly to the left and right, there is no worry that the seedling placed on the preliminary seedling stage is shaken off.

The side view of a riding rice transplanter. The top view of a riding rice transplanter. The top view which shows the structure of a traveling vehicle body and a leveling apparatus. The rear view which shows the structure of a preliminary seedling stand. The partial cross section rear view which shows the structure of a part of preliminary seedling stand.

Explanation of symbols

1: Passenger rice transplanter 2: Traveling vehicle body 3: Elevating link device 4: Seedling transplanter 5: Fertilizer application device 5a: Hopper unit 5b ...: Fertilizer feeding unit 6, 6: Front wheel 7, 7: Rear wheel 7 ', 7': Auxiliary wheel 13: Rear wheel frame 13a: Rear wheel rolling shaft 18: Handle 20: Seat 21: Main steps 21a and 21a: Left and right step portions 21c of main step 21: Rear step portions 22 and 22: Left and right extension steps 42: Seedling Tables 42-1 to 42-8: Seedling mounting surface 50: Preliminary seedling mounting table

Claims (1)

  Mainly on the front side and both left and right sides of the seat 20 provided on the traveling vehicle body 2 provided with a pair of left and right front wheels 6 and 6 and a pair of left and right rear wheels 7 and 7 and auxiliary wheels 7 'and 7' on the left and right sides. A seedling transplanting machine 4 for arranging a step 21 and mounting a seedling mounting table 42 in which a plurality of seedling mounting surfaces 42-1 to 42-8 are arranged in the left-right direction on the rear side of the traveling vehicle body 2 to plant a plurality of seedlings is provided. In the mounted rice transplanter, left and right expansion steps 22 and 22 are arranged on both the left and right sides of the main step 21 so that the left and right expansions are in front of the outermost seedling mounting surfaces 42-1 and 42-8 of the seedling mounting table 42. Steps 22 and 22 are provided so that the left and right sides are located, and a rear step part 21c is provided on the rear side of the seat 20 so that the step surface is higher than the main step 21 and covers the upper side of the rear wheels 7 and 7. The front of steps 22 and 22 is the main step 1 and the left and right step portions 21a and 21a on the left and right sides of the handle 18 are provided at substantially the same height as the step surfaces, and the rear portions of the left and right expansion steps 22 and 22 are made higher than the front portions, respectively.・ It is arranged on the upper side of 7 ′ and provided at substantially the same height as the step surface of the rear step part 21 c, and a horizontally long hopper part 5 a for storing the fertilizer of the fertilizer application device 5 and a fertilizer feeding part 5 b provided on the lower side thereof. Is disposed at the rear part of the traveling vehicle body 2, and the left and right lengths of the hopper part 5 a are configured to be shorter than the left and right lengths of the seedling stage 42 in a plan view.

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