JP4973070B2 - Field action seedling transplanter - Google Patents

Description

  The present invention relates to a field action seedling transplanter and belongs to the technical field of agricultural machinery.

Conventionally, as disclosed in Patent Document 1, a six-wheeled vehicle having a pair of left and right front wheels on the front side, a pair of left and right drive wheels in the front and rear middle, and a pair of left and right seat supporting rear wheels on the rear side Construction seedling transplanters are known.
JP 2005-6545 A

  In the conventional one, stable support of the airframe can be obtained, but since the left and right directions of the front and rear wheels cannot be changed, there is a problem that the steerability of the airframe and the ability to follow the heel are deteriorated.

In order to solve the above problems, the present invention has taken the following technical means.
That is, according to the present invention, a pair of left and right front wheels (5), (5), drive wheels (6), (6), tail wheels (7), (7) are arranged in order from the front side. The left and right drive wheels (6) and (6) are respectively attached to transmission cases (9) and (9) that rotate up and down, and the transmission cases (9) and (9) rotate. The left and right front wheel support arms (13) and (13), which are configured to move up and down, are provided on the left and right transmission cases (9) and (9) so as to be movable up and down, and extend forward from the transmission cases (9) and (9). The left and right front wheels (5) and (5) are provided to the left and right front wheel support arms (13) and (13) via the left and right front wheel steering shafts (15) and (15). The swing arms (17) and (17) that rotate together with the front wheel steering shafts (15) and (15) are moved from the front wheel steering shafts (15) and (15). Provided by extending toward the left and right ridge guide rollers in contact with the inclined surface of the ridge (16), the swing arm (16) (17), in rotation (17) disposed for free horizontal movement, the tail wheel (7), (7) is a field action seedling transplanter characterized by being configured to be steerable.

Further, the present invention according to claim 2 is directed to a steering handle (2), a seedling supply transport unit (3) for supplying seedlings, and a seedling planting planting seedlings transported by the seedling supply transport unit (3) in a field. It is provided with an attachment part (4) and a seat (22), a horizontal shaft rod (18) is installed between the left and right swing arms (17), (17), and a seedling supply / conveyance part (3) and a seedling planting part The left and right swing arms (17), (17) and the horizontal shaft rod (18) are arranged so as to surround (4), and the walking operation lever (28) operated during walking driving by the steering handle (2), and the seat The riding operation lever (30) operated during the riding operation according to (22) is provided, and the heel guide rollers (16), (16) and the front wheel (5) are operated by operating the walking operation lever (28) or the riding operation lever (30). , (5) is configured to lift. And the field effect seedling transplanting machine.

According to the first aspect of the present invention, since the front, middle, and rear six-wheeled vehicles are configured, not only the support of the airframe is stabilized, but also the posture of the saddle guide roller is maintained even when the drive wheels are moved up and down. It can be prevented from changing, and the front wheel can be steered well by the front wheel steering by the saddle guide roller, and the tail wheel is also steerable, so the steering of the aircraft is not hindered and the steering and followability are improved. Can be achieved.
According to the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, the left and right swing arms and the horizontal shaft can protect the seedling supply and transfer unit and the seedling planting unit, and walk The eaves guide roller and the front wheel can be lifted and operated during driving and riding.

An embodiment of the present invention will be described with reference to the drawings.
The seedling transplanter shown in FIG. 1 and FIG. 2 includes a seedling supply transport unit 3 that feeds and transports seedlings to a machine body including a traveling unit A and a steering handle 2 for self-propelling the vehicle body 1, and the seedling supply transport unit 3. It is a seedling transplanting machine provided with the seedling planting part 4 which transplants the conveyed seedling to a farm field.

  In the illustrated example, the traveling unit A is configured to be freely steered in front of the engine E, a pair of left and right drive wheels 6 and 6 that are driven and rotated by transmission of the power of the engine E, and the drive wheels 6 and 6. A pair of left and right front wheels 5, 5 are supported, and a pair of left and right tail wheels 7, 7 are slidably supported behind the drive wheels 6, 6. The pair of left and right front wheels 5, 5, drive wheels 6, 6 and tail wheels 7, 7 travel in a state where they straddle a ridge U formed in the field.

  A mission case 8 is disposed at the rear of the engine E, and rotational power from the engine E is transmitted to a transmission mechanism in the mission case 8. The left and right ends of the mission case 8 are respectively provided with left and right travel extension cases 10 and 10 that are rotatable with respect to the case 8, and the left and right travel extension cases 10 and 10 have respective ends. The transmission cases 9, 9 are fixedly provided on the part. Accordingly, the power in the mission case 8 input from the engine E is transmitted to the transmission cases 9 and 9. A pair of left and right drive wheels 6 and 6 are respectively attached to the axles 6a and 6a of the rotating tip portions of the transmission cases 9 and 9, so that the airframe travels by driving the pair of left and right drive wheels 6 and 6. It has become.

  Arms 11, 11 project upwardly from the travel extension cases 10, 10 and are connected between the arms 11, 11 and the mission case 8. The drive wheels 6 and 6 are moved up and down by the 12 expansion / contraction operations. The lifting hydraulic cylinder 12 moves up and down in accordance with the unevenness of the upper surface of the heel, and sets the body relative to the height of the heel surface based on the detection result of the ground vertical sensor 24 that detects the height of the upper surface of the heel Configured to operate at height.

  The front wheels 5 and 5 are steered about a vertical axis Y1 through a front wheel steering shaft 15 in the vertical direction with respect to a bearing boss 14 of a front wheel support arm 13 which is movable forward from the transmission case 9 and can move up and down. The bearing is configured to be movable. Further, as shown in FIG. 5, the front wheels 5 and 5 are provided so that weights 25 and 25 can be attached, and if the front wheel ground pressure is weak, the guide of the driving wheel is uncertain. The driving wheel can be reliably guided.

  The heel guide rollers 16 and 16 that follow and move in contact with the slope (slope) of the heel are fixed to the front wheel steering shaft 15 with a base portion protruding forward from the swing arm 17 and the tip of the swing arm. It is constructed on a horizontal shaft 18 that is horizontally mounted, and moves in the left-right direction via a swing arm 17 that can swing around the vertical axis Y1. The front wheels 5 and 5 are steered by rotating the front wheel steering shaft 15 about the vertical axis Y1 in association with the left and right movement of the rod guide rollers 16 and 16.

  The tail wheels 7, 7 are configured such that the tail wheel steering shaft 19 in the vertical direction rotates around the vertical axis Y2 and is steered. For example, when the tail wheels 7 and 7 are steered to the left, the aircraft moves forward in the right direction.

  Note that the left and right spacing of the eaves guide rollers 16 and 16 can be arbitrarily adjusted according to the eaves width, and the front wheels 5 and 5, the drive wheels 6 and 6, and the tail wheels 7 and 7 are also eave widths. Needless to say, the tread can be adjusted according to the condition.

  The steering handle 2 is detachably connected to the handle frame 20, but is configured to be vertically adjustable via a chrysanthemum type attachment 21 so that it can be vertically adjusted according to the height of the walking worker.

The seat 22 is installed and supported by a seat support frame 23 that is installed at the center in the width direction of the aircraft and is erected from the aircraft side.
The seedling feeding / conveying unit 3 and the seedling planting unit 4 are arranged between the front wheel 5 and the driving wheel 6, and when the side clutch of the driving wheel is turned “on” or “off”, the reaction immediately occurs and the alignment is performed. It becomes easy.

  A pressure-reducing wheel 26 is provided at a rear position of the seedling planting portion 4, and this pressure wheel 26 is provided at a rear position of the seedling-planting position, and rolls on the upper surface of the ridge U as the aircraft moves. It is designed to lightly suppress the marks after planting. The pressure-reducing wheel bearing body 27 is fixedly supported by the front wheel support arm 13 that can move up and down around the horizontal axis X, and the pressure-reducing wheel 26 moves up and down together with the front wheel 5.

  During walking operation with the steering handle 2, the heel guide roller 16 and the front wheel 5 (including the pressure-reducing wheel 26) can be lifted via the connecting rod 29 by operating the walking operation lever 28, and during riding operation with the seat 22. In the same manner as described above, the saddle guide roller 16 and the front wheel 5 (including the pressure reducing wheel 26) and the like can be lifted upward via the operation arm 31 by operating the riding operation lever 30 in front of the step. It is configured so that it can be performed as is.

  In the embodiment shown in FIGS. 3 and 4, the front wheel support arm 13 is a fulcrum on the same axis as the axle 6a of the drive wheel 6 so that the posture of the rod guide roller 16 does not change even if the drive wheel 6 moves up and down. It is configured to rotate up and down. Further, as shown in FIG. 4, in plan view, the left and right front wheel support arms 13, 13, front left and right swing arms 17, 17, and a horizontal shaft rod 18 connecting the left and right swing arms, seedling supply and conveyance By arranging and arranging the part 3 and the seedling planting part 4 so as to surround them, in particular, the seedling planting part is protected. Further, when the turning lever 32 for turning the airframe is operated (from the solid line position in FIG. 3 to the virtual line position), the hydraulic valve is automatically switched to the up side, and the drive wheel 6 is driven by the operation of the lifting hydraulic cylinder 12. Is lowered to lift the machine body to a predetermined height.

  At the time of planting, in order to improve the forward visibility, it is preferable that the operation can be performed with the steering handle 2 pushed down around the fulcrum P as shown in FIG. At the time of turning, the steering wheel is returned to a state where it is lifted to a normal predetermined position, and the turning operation is performed. In addition, when the vehicle body is lifted by lowering the driving wheel during turning, the steering handle can be automatically lifted to the original operation posture position. In addition, it is convenient that the rod guide roller 16 and the pressure reducing wheel 26 are lifted in conjunction with the lifting of the steering handle during turning.

  In addition, as shown in FIG. 6, when turning, when the left and right steering pedals 35L and 35R are depressed, the tail wheels 7 and 7 are steered via the rods 36 and 36 and the steering arm 37. ing. When the left steering pedal 35L is depressed, the left tail wheel 7 rotates rightward and the aircraft turns left. When the right steering pedal 35R is depressed, the right tail wheel 7 rotates leftward. Move and the aircraft turns to the right. According to this, it is possible to easily turn the aircraft while riding. If the steering pedal is depressed, the side clutch inside the turning of the driving wheel is also disengaged simultaneously with the steering of the tail wheel, making the turning easier.

Next, the seedling planting unit 4 and the seedling supply transport unit 3 will be described.
The seedling planting unit 4 is connected to a drive unit that moves the seedling planting unit 4a up and down, and the seedling planting unit 4a of the seedling planting unit 4 takes the seedling that has been transported by the seedling supply transport unit 3. The seedlings are planted in the field.

  In short, the seedling planting part 4 is operated through an appropriate drive mechanism, and the tip parts (lower end parts) of the seedling planting action parts 4a, 4a provided at the lower end part thereof have a trajectory T as shown in the figure. It descends while drawing, enters the ridge U, opens back and forth in the soil, and drops the seedling inside to plant.

  In addition, the seedling supply transport unit 3 circulates in the upper position of the seedling planting unit 4 and reaches the upper side of the seedling planting unit 4a that has been raised after the planting operation has finished, and then the bottom of the seedling container 3a The lid is opened, and the seedling inside is dropped and supplied to the seedling planting portion 4a from above.

Side view of upland seedling transplanter Same as above Side view of another embodiment of seedling transplanter Same as above Perspective view of main parts of seedling transplanter Plan view of essential parts of seedling transplanter of another embodiment Side view of seedling transplanter of another embodiment

5 Front Wheel 6 Drive Wheel 7 Tail Wheel 13 Front Wheel Support Arm 15 Front Wheel Steering Shaft 16 畝 Guide Roller 17 Swing Arm 18 Horizontal Shaft 19 Tail Wheel Steering Shaft

Claims (2)

A pair of left and right front wheels (5), (5), drive wheels (6), (6), tail wheels (7), (7) are arranged in order from the front to form a six-wheel configuration, and left and right drive wheels (6) , (6) are attached to transmission cases (9), (9) that rotate up and down, and are moved up and down by the rotation of the transmission cases (9), (9). ), (9) provided on the left and right front wheel support arms (13), (13) provided to be movable up and down from the transmission cases (9), (9) to the left and right front wheel support arms (13). , (13), the left and right front wheels (5), (5) are provided via the left and right front wheel steering shafts (15), (15), and the front wheel steering shafts (15), (15 ) and swing arm to rotate integrally (17), (17) a front wheel steering shaft (15), provided to extend forward from (15), contacts the inclined surface of the ridge That the left and right ridge guide roller (16), the swing arm (16) (17), disposed for free lateral movement in rotation (17), the tail wheel (7), (7) is then steered freely configured A field action seedling transplanter characterized by that. Steering handle (2), seedling supply transport section (3) for supplying seedlings, seedling planting section (4) for planting seedlings transported by the seedling supply transport section (3), and seat (22) Left and right swing arms so that a horizontal shaft rod (18) is installed between the left and right swing arms (17), (17) and surrounds the seedling supply and transport section (3) and the seedling planting section (4) (17), (17) and the horizontal shaft rod (18) are arranged, and the walking operation lever (28) operated during the walking operation by the steering handle (2) and the riding operation operated during the riding operation by the seat (22). The lever (30) is provided, and the heel guide rollers (16), (16) and the front wheels (5), (5) are lifted by operating the walking operation lever (28) or the riding operation lever (30). The field action seedling transplanter according to claim 1, wherein the field action seedling transplanter is provided.

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