JP2019110885A - Riding rice transplanting machine - Google Patents

Abstract

To solve problems in which an auxiliary worker for supplying seedlings from the front side preliminary seedling frame to the rear side seedling placing platform of a traveling vehicle body has to move with seedlings from a main stepped surface to a rear stepped surface, and then if a step difference between the main stepped surface and the rear stepped surface is large, the occurrence of sliding and tripping may cause danger, and if a rear stepped surface is present in a high position, the risk of falling may be caused.SOLUTION: Front side drive of a traveling vehicle body is provided as front wheels of small diameter, and rear side drive is provided as crawlers. A crawler upper edge is lowered from an upper side stepped surface of the front wheels. Thereby, a step difference between the upper side stepped surface of the front wheels and the stepped surface of the crawler upper side is reduced.SELECTED DRAWING: Figure 1

Description

Detailed Description of the Invention

  The present invention relates to a riding type rice transplanter.

  Conventionally, there is a riding rice planter for mounting a seedling planting work machine on the rear side of a riding traveling vehicle body, and the riding traveling vehicle body includes a pair of left and right small-diameter front wheels and a pair of left and right large-diameter rear wheels, A main step is provided on the upper side of the front wheel, and the upper end is the upper side of the large diameter rear wheel that is higher than the main step surface, and on the rear side of the seat is a step approximately the same as the outer diameter difference of the front and rear wheels. It was a riding rice planter with a rear step surface in the form of stairs higher than the step surface.

Patent No. 3931923

  When taking out the seedlings from the spare seedling frame on the front side of the riding traveling vehicle body and supplying the seedlings to the rear seedling platform, the assistant worker walks on the step surface of the main step and raises the rear step one step higher Move to the step surface and replenish the seedlings sequentially. However, if you supply seedlings while planting work to increase the work efficiency, the assistant worker who moves with the seedlings on the step moves a large amount of time between the steps if the machine shakes, suddenly starts or suddenly stops. There is a risk of slipping or crawling on steps. In particular, the seedling supply operation on the rear step provided at a high position is bad in posture and there is a risk of falling. An object of the present invention is to make it possible for an auxiliary worker to safely and easily carry out the seedling supplying operation.

The present invention has the following configuration in order to solve the problems.
A seedling planting work machine 4 equipped with a seedling platform 42 is mounted via a link mechanism 3 provided at the rear of the passenger traveling vehicle body 2, and a seat 10 is provided above the pair of left and right front wheels 5 of the passenger car body 2 A steering wheel 9 for steering the front wheel 5 is provided on the front side of the seat 10, and a pair of left and right crawler devices 6 are provided behind the front wheel 5, and both sides of the steering wheel 9 are provided on the upper side of the front wheel 5. A main step 7 having a planar main step surface 7a from the position to the side surface position of the seat 10, and a rear step having a planar rear step surface 8a on the rear side of the seat 10 on the upper side of the crawler device 6. In the riding rice planter 1 provided with the step 8, the riding rice planter has the upper end of the crawler 6a of the crawler device 6 lowered than the main step surface 7a.

  The invention according to claim 2 is the riding rice transplanter according to claim 1, characterized in that the upper end of the front wheel 5 and the upper end of the crawler 6a of the crawler device 6 have substantially the same height.

  According to the riding rice planter of the present invention, the main step 7 is provided close to the upper side of the small diameter front wheel 5, and the ground height is low, so that the operator or the assistant can easily get on and off the traveling vehicle body 2 It can move safely and easily on the step surface 7a.

  When supplying seedlings while carrying out planting work from the spare seedling frame 12 on the front side of the traveling vehicle body 2 to the seedling table 42 on the rear side, the auxiliary worker is a rear provided on the rear side of the seat 10 from the main step surface 7a. Move to the step surface 8a and supply the seedlings. At this time, by lowering the upper end of the crawler 6a, the difference in level between the rear step surface 8a and the main step surface 7a is reduced, and the auxiliary worker does not slip or crawl on the difference in level. Further, since the height of the rear step surface 8a is low, the rear step surface 8a can be moved easily and safely, the posture for supplying seedlings to the seedling platform 42 is improved, and the risk of falling is eliminated.

  By driving the rear portion of the traveling vehicle body 2 with the crawler device 6, the contact pressure is low and the traction force is strong compared to the rear wheel 66, and the traveling performance in the wet field or Fukada is improved. Further, while the upper end of the crawler 6a is lowered, a wide space is formed behind the crawler device 6 to widen the distance from the side float 56, and the arrangement of the field leveling device 57 becomes easy.

Side view of a riding rice planter. The top view of a riding rice transplanter. Transmission diagram of the riding rice planter. Side view of a riding rice planter. The side view of a well-known riding rice transplanter. The top view of a well-known riding rice transplanter. The comparison figure of a drive device and a step. The comparison figure of a drive device and a step. Layout drawing of rear drive unit, field leveling unit and float.

  An embodiment of the present invention will be described based on the drawings. The riding rice planter 1 is configured to be equipped with a seedling planting work machine 4 having a rice leveling device 57 via a link device 3 that is operated to move up and down behind the traveling vehicle body 2.

  The traveling vehicle body 2 travels on crawler devices 6 having a pair of left and right steering rotationally driven front wheels 5 and a pair of left and right orbiting crawlers 6a provided behind the same. Main steps 7 and 7 having main step surfaces 7a and 7a at low positions not interfering with the front wheels 5 and 5 that are steered and rotationally driven are provided above the front wheels 5 and 5. A rear step 8 having a rear step surface 8a is provided on the upper side of the crawler devices 6 and 6 in proximity to a height at which the crawlers 6a and 6a do not interfere with each other. The upper end of the crawler 6a is lower than the main step surface 7a. The rear step surface 8a is provided in a step shape which is higher than the main step surface 7a but has a small step.

  A seat 10 for a driver is provided above the main steps 7 and 7, and a steering wheel 9 is provided on the front side of the seat 10. The main steps 7, 7 have flat main step surfaces 7a, 7a extending from the left and right sides of the handle 9 to the left and right sides of the seat 10. On the rear side of the seat 10, a rear step 8 having a flat rear step surface 8a is provided with the same width as the main steps 7 and 7.

  A pair of left and right spare seedling frames 12 are provided on the front side of the seat 10 above the main steps 7 and 7 so that a large number of spare seedlings can be mounted. A fall prevention guard 11 is provided on the upper side of the rear step 8 along the outer end shape of the rear step surface 8a. The auxiliary worker takes out the seedlings from the spare seedling frame, walks and moves on the main step surface 7a, and sequentially replenishes the seedlings from the rear step surface 8a to the seedling platform 42 on the rear side of the traveling vehicle body 2. At this time, since the step between the main step surface 7a and the rear step surface 8a is small, it is possible to replenish the seedlings safely and easily.

  A frame 13 is provided on the lower side of both the steps 7 and 8. A support column 14 is erected at the front end of the frame 13 and a link support 15 is provided at the rear end. Both support columns 14 and 15 have upper steps 7 and 8. I support it. The proximal end portion of the link device 3 can be attached to the link support 15, and a rolling shaft 28 is provided horizontally at the lower end portion toward the rear.

  The link device 3 has a substantially parallel link configuration having the link support 15 as a base end, the link support 15, the upper link 35, the lower link 36, and the link frame 37. An upper link arm 38 is integrally provided on the upper link 35, and is connected to a tip end of a piston 19a of a hydraulic cylinder 19 swinging up and down with the frame connection 13a of the frame 13 as a base end. 3 swings up and down. A planting rolling shaft 28 is provided horizontally at the lower end of the link frame 37 rearward, and the planting implement 4 mounted on the planting rolling shaft 28 moves up and down substantially horizontally.

  An engine 16, a transmission case 17, and a planting case 18 are disposed on the frame 13 in order from the front. The power of the engine 16 is input to the transmission case 17 through the drive pulley 20, the belt 21, the input pulley 22, and the continuously variable transmission 23. In the transmission case 17, although not shown, an input clutch device, a transmission switching device, a braking device, a front wheel differential gear device, and an output mechanism to the seedling planting machine 4 included in a known rice transplanter It has an output mechanism to the crawler device 6 which drives and has a rear part while having. The power from the transmission case 17 is input to the planting case 18 via the planting transmission shaft 27.

  The front wheels 5 are attached to the outside of front wheel cases 24 and 24 rotatably provided below the front wheel case frames 24a and 24a provided on both sides of the transmission case 17, and are already known for tractors and passengers It is steered by the control device equipped with the rice transplanter. Although not shown, the front wheel differential gear in the transmission case 17 is rotationally driven through the front wheel case frame 24a and the power transmission mechanism in the front wheel case 24.

  The rear-drive crawler device 6 is an L-shaped crawler frame 30 integrally provided below both ends of a rolling frame 29 mounted so as to be orthogonal to the rolling shaft 28 provided on the link support 15. It is installed at 30. The crawler device 6 is configured by a rear case 26, an endless band crawler 6 a, a small wheel 31, a small wheel 32, a large wheel 33, and a crawler gear 34. The power of the transmission case 17 is transmitted to the rear cases 26 provided on both sides of the rolling frame 29 via the rear drive shafts 25. Crawler gears 34 and 34 are attached to the outside of the rear cases 26 and 26 and are rotated by the rear shafts 34a and 34a.

  The crawler 6a is in contact with the lower surface between the small wheel 32 and the large wheel 33, is inclined forward from the small wheel 32 to the upper front 33, and is located above the lower surface contact portion. The crawler gear 34 is positioned in a quadrilateral to be extended and held, and is driven to rotate by the rotation of the crawler gear 34. The crawler 6a is a side view and a longitudinally long 4 in which the height from the ground contact portion to the upper end of the crawler gear 34 is larger than the length from the front end of the small rotation wheel 31 to the rear end of the large rotation wheel 33 It has a rectangular shape, and it is possible to reduce the hole for digging the soil with the crawler 6a when turning. Further, since the upper end of the crawler 6a is positioned lower than the main step surface 7a, the difference in level between the main step surface 7a and the rear step surface 8a can be reduced. The crawler gear 34 is positioned at substantially the same height as the upper end of the front wheel 5 to prevent it from being buried in the ground and worn.

  Although not illustrated, the planting case 18 includes a planting stop / operation clutch device provided inside a known rice planter, and a planting density change mechanism. The power from the planting case 18 is transmitted to the planting frame 40 via the planting drive shaft 41.

  The planting work machine 4 has a six-row planting structure, and is mounted on the rolling shaft 39 at the lower end of the link frame 37 so as to freely swing left and right. After the rear step 8 of the traveling vehicle body 4 It has a seedling platform 42 whose upper end extends to near the end, and a center float 55 and side floats 56 and 56 that keep the planting work machine 4 stable with the field flat and flat at the bottom. There is. A field leveling device 57 is provided between the crawler devices 6 and 6 and the side floats 56 and 56.

  The planting frame 40 which doubles as a frame is internally equipped with a device for reciprocating the seedling loading table 42 provided on a well-known rice transplanter, which is not shown in the drawings. The power input to the planting frame 40 is transmitted to the input shaft 49 by the drive gear 49a and the driven input gear 49b. In the center of the planting frame 40, a center case 43 is provided toward the rear, and on both sides of the planting frame 40, side cases 45, 45 extended by side frames 44, 44 are provided. 45 and 45 are mounted in parallel. On both sides of the rear of each case 43, 45, 45, a rotary case 47, 47 provided with two implants 48 is provided. The rotation of the input shaft 49 is transmitted from the drive sprocket 52 attached to the input shaft 49 to the driven sprocket 53 attached to the implantation shaft 48 via the chain 54, and the rotary case 47 rotates.

  A slide rail 50 provided with an opening 50a for taking out the seedling opposite to the grafting tool 48 on the upper side of the center case 43 and the side cases 45, 45 is parallel to the planting frame 40 and the side frames 44, 44 It is attached. On the upper side of the planting frame 40, a long seedling platform 42 for mounting the seedlings at the base end of the slide rail 50 is inclined toward the traveling vehicle body 2 and the tip extends to the upper side near the rear end above the rear step 8. The back side is slidably supported by the seedling platform support arm 51. The seedling loading stand 42 is reciprocated left and right by the left and right reciprocating device provided inside the planting frame 40 described above. Seedlings mounted on the seedling platform 42 are divided by the grafting tool 48 from the opening 50a of the slide rail 50 and planted on the field. The transplantation method and mechanism are the same as those of the known rice transplanter, and therefore the illustration and the description thereof will be omitted.

  A flush leveling device 57 is installed in a wide space between the crawler devices 6 and 6 and the side floats 56 and 56. The field leveling device 57 has a wider rotary 58 than the left and right outermost graft tools 48. The rotary 58 has a star-like side view, and rotates it to cut away the deep grooves in the running trace of the front wheel 5 and the crawler 6a or the deep holes generated when turning, and removing the raised soil Fill holes and improve the leveling performance of center float 55 and side floats 56 and 56.

  In the rotary 58, rotary frames 59, 59 are extended outside the side cases 45, 45 provided on both sides of the planting frame 40, the rotary case 60 is on one side, and the rotary arm 61 is on the other side. It is provided and supported at both ends by the rotary case 60 and the rotary arm 61. The rotation of the rotary 58 extends the input shaft 49 to the rotary case 60 and is transmitted from the rotary drive sprocket 63 through the rotary chain 65 to the rotary driven sprocket 64 for rotation.

  5 and 6 show a known riding rice transplanter 1A. In the configuration, the seedling planting machine 4 is mounted on the rear side of the traveling vehicle body 2A via the link device 3 that is operated to move up and down. The traveling vehicle body 2A is driven by four wheels of a pair of left and right front wheels 5 and 5 and a pair of left and right rear wheels 66 and 66. The front wheel 5 has a small outside diameter because it needs to be lowered to make it easy for the operator or the auxiliary worker to get on and off the main step 7. The rear wheel 66 has a large outer diameter in order to enhance traction and Fukada adaptability, and the upper end of the rear wheel 66 protrudes higher than the main step surface 7a. Therefore, the upper main step surface 7a of the front wheel 5 and the upper rear step surface 8Aa of the rear wheel 66 have a height substantially equal to the outer diameter difference of the front and rear wheels, and the rear step surface 8Aa is from the main step surface 7a. There is no choice but to have a stair-like shape with large steps.

  On the rear side of the rear wheels 66, 66, side floats 56, 56 are provided for leveling the wheel marks. However, the distance between the rear wheel 66 and the side floats 56 is small. In order to provide the field leveling device 57 between the floats 56, the whole planting work implement 4 has to be moved rearward as a whole.

  In FIG. 7, when the upper end of the crawler 6a is lower than the main step surface 7a, the rear step surface 8a is also lower, and the difference between the main step surface 7a and the rear step surface 8a is small. However, since the upper end of the rear wheel 66 is higher than the main step surface 7a in the known riding rice planter, the rear step surface 8Aa is also high, and the step with the main step surface 7a becomes large.

  In FIG. 8, by making the upper end of the crawler 6 a substantially the same height as the upper end of the front wheel 5, the main step surface 7 a can be made flat to the rear end.

  FIG. 9 shows the positional relationship of the crawler 6, the rotary 58, the center float 55, the side float 56, and the rear wheel 66 in a side view. The space on the rear side of the crawler 6a is wide, and the installation of the rotary 58 is easy. However, in a known riding rice planter, since the rear wheel 66 has a large diameter, the distance from the side float 56 becomes narrow, and the rotary 58 can not be provided.

1: Regular rice planter 2: Traveling car body 3: Link system 4: Seedling planting machine 5: Front wheel 6: Crawler system 6a: Crawler 7: Main step 7a: Main step surface 8: Rear step 8a: Rear step surface 9: Handle 10: Seat 42: Seedling platform

Claims (2)

  A seedling planting work machine (4) equipped with a seedling platform (42) is mounted via a link device (3) provided at the rear of a passenger traveling vehicle body (2), and the left and right pair of the passenger car body (2) A seat (10) is provided on the upper side of the front wheel (5), and a steering wheel (9) for steering the front wheel (5) is provided on the front side of the seat (10). A pair of left and right crawler devices (6) are provided, and on the upper side of the front wheel (5), a planar main step surface (7a) extending from both left and right side positions of the handle (9) to side positions of the seat (10) And a rear step (8) having a flat rear step surface (8a) on the rear side of the seat (10) on the upper side of the main device (7) and the crawler device (6). Of the crawler mounted on the main step surface (7a) in the machine (1) (6) of the crawler (6a) lower the riding rice transplanter upper end.   The riding rice planter according to claim 1, wherein the upper end of the front wheel (5) and the upper end of the crawler (6a) of the crawler device (6) have substantially the same height.

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