JPS643326Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a rear-planting type riding-type rice transplanter that has a seedling planting device attached to the rear of a traveling machine on which a worker rides, and then levels the wheel marks caused by the wheels. It is related to the device.

Generally, the wheels of a rice transplanter move with their lower parts sunk in the field, and the wheels are equipped with lugs or blades, so the field after the wheels pass becomes rough.

Therefore, in a so-called rear-planting riding type rice transplanter that is equipped with a multi-row seedling transplanter at the rear of the traveling machine, the front part of the float of the seedling transplanter located behind the rear wheels is formed to be wide, and the bottom of the wide front part After leveling the rough field, seedlings are planted by a planting mechanism at the lateral rear of the float.

However, the width of the front part of the float cannot be made too wide in order to prevent it from interfering with adjacent seedling planting rows, and if the front part of the float is too close to the rear wheels, it may cause damage to the lugs of the rear wheels. Since the lifted mud will cover the upper surface of the float, the float is arranged at an appropriate distance behind the rear wheels.

On the other hand, when the traveling machine changes direction on a headland in a field, etc., the turning radius of the float portion located at the rear becomes larger than that of the rear wheels on the inner side of the turning radius, so the wheel marks of the rear wheels cannot be erased by the floats. It was hot.

In the present invention, a flat body that protrudes outward in the lateral direction of the rear wheel running machine is attached to the floats located at the outermost positions on both the left and right sides located behind the rear wheels of this type of rear-planting type rice transplanter. This also makes it possible to erase the wheel marks left by the rear wheels on the inside of the turn.

Next, an explanation will be given based on an example in which the present invention is applied to a five-row riding type rice transplanter.
1 shows a traveling body, and the traveling body 1 has a downwardly U-shaped cross-sectional U-shaped body frame 2, front wheels 3, 3 attached to the front lower surface thereof, and rear wheels 5, attached to the rear lower surface via chain cases 4, 4. 5, on the upper surface of the vehicle body frame 2, an engine 6 is mounted in the front part, a control seat 7 is mounted in the rear part, and a steering handle 8 for moving and steering the front wheels 3 is located between them. Each is equipped with one.

Reference numeral 9 denotes a parallel link mechanism 1 at the rear of the traveling body 1.
0 and a seedling planting device 9 which is vertically movable and detachably attached via a hitch mechanism 11.
are planting cases 13, 13, 13 attached to the left and right sides of the transmission case 12 at appropriate intervals in the direction between the seedling planting rows;
Float 1 attached to the bottom of each planting case 13
4, 15, 14, and a seedling platform 16 whose upper end is inclined so as to approach the traveling body 1.The rear end of each planting case 13 is equipped with a seedling planting mechanism 17, and this seedling planting device 9 is connected to the traveling body. It is raised and lowered by a hydraulic cylinder 18 provided between 1 and the parallel link mechanism 10.

The outermost floats 14, 14 located at both left and right ends in the traveling direction of the traveling body 1 are arranged so that their wide front portions are located behind the rear wheels 5, 5, At the front of the etc., front and rear longitudinal flattening bodies 19, 19 are attached, respectively.
The front end of the leveling body 19 is made to protrude forward in the direction of movement of the aircraft. At this time, each leveling body 19 is arranged approximately parallel to the rotating surface of each rear wheel 5 and at an appropriate distance (l ₁ ) from the outer surface of each rear wheel 5, that is, facing forward from the outermost floats 14, 14. Both left and right flat bodies 19, 19 protruding from the left and right rear wheels 5, 5 are arranged so as to sandwich them from the outside of both the left and right rear wheels 5, 5. The front end of each flat body 19 extends backward from the axle 20 of the rear wheel 5.
It is made to protrude to approximately half the radius (R) of.

Further, the bottom surface of each flat body 19 is formed to be substantially the same horizontal plane as the bottom surface of each float 14.

Note that the distance (l ₂ ) between the front end of the leveling body 19 and the rear wheel axle 20 should be determined based on the correlation with the distance (l ₁ ) from the outer surface of the rear wheel 5, regardless of Fukada or Asada. be.

With this configuration, when the seedling planting device 9 is lowered in the field and moved forward with the seedlings 14, 15, and 14 sliding on the field surface 21, a plurality of rows of seedlings are placed on the field surface 21 by the seedling mechanism 17 (this implementation In the example 5
They are planted sequentially along rows. At this time, the bottom surfaces of the outermost floats 14, 14 at the rear position pass after the front wheels 3, 3 and rear wheels 5, 5 have passed, and the wheel marks are leveled, and the rear wheels 5, The muddy water pushed outward to the right and left in the traveling direction by the floats 14, 14 is blocked by the inner surfaces of the flat bodies 19, 19 protruding forward from the floats 14, and does not flow out any further to the outside. This will prevent seedlings in adjacent rows from falling over.

In addition, when turning the traveling body 1 on the headland of a field, etc., the seedling planting device 9 should be slightly moved so that it is in contact with the field to the extent that the sides of the floats 14, 15, 14 do not push the muddy water sideways. Let it rise. At this time, the turning center (O) of the traveling body 1 is the axle 20 of the rear wheels 5, 5 and the front wheels 3,
The wheel marks of the rear wheel 5 on the outside of the turn and the front wheels 3, 3 can be leveled with the following floats 14, 15, 14, but the marks of the rear wheel 5 on the inside of the turn Compared to the turning radius (R ₁ ) of the innermost part of turning, the float 1 at the rear position
Since the turning radius (R ₂ ) (indicated by the two-dot chain line) at the front end of the float 14 on the inside of the turning radius is large, it is not possible to completely level out the wheel marks caused by the rear wheels 5 on the inside of the turning radius on the bottom surface of the float 14.

However, according to the present invention, the front end of the flat body 19 that protrudes forward from the float 14 provided behind the rear wheel 5 on the inside of the turn among the plurality of floats arranged at appropriate intervals on the right and left sides of the traveling direction is wheel 5
and the turning center (O),
Its radius (R ₃ ) will be smaller than its radius (R ₁ ).
Therefore, the turning radius area of the bottom surface of the flat body 19 from the front end of the flat body 19 to the attachment point to the float 14 with respect to the turning center (O) completely covers the turning radius area of the rear wheels on the inside of the turning radius. Since it is covered, the wheel mark caused by the rear wheel can be completely and evenly erased. In particular, it goes without saying that the present invention can also be applied to a configuration in which the distance between the ruts of the rear wheels 5, 5 is larger than that of the front wheels 3, 3.

As described above, the present invention provides a riding type rice transplanter in which a seedling planting device having a plurality of floats is attached to the rear of a running body having four front and rear wheels so as to be able to rise and fall vertically. , characterized in that a flat body having a bottom surface that is flush with the bottom surface of the float is provided so as to protrude forward in a portion of the traveling body outside both the left and right rear wheels; The wheel marks caused by the rear wheels when the aircraft turns can be erased by the leveling body that protrudes forward from the float in the seedling planting device. By making the float flat on the same plane, there is less mud pushing by the leveling body when turning in the direction with the float in contact with the field, which reduces the roughness of the field caused by the wheels during rice planting work in the field, and improves the quality of the field. This has the effect of improving the planting of seedlings on the surface.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view of a riding rice transplanter, FIG. 2 is a plan view thereof, and FIG. 3 is an explanatory diagram of its operation. 1... Traveling aircraft, 3, 3... Front wheels, 5, 5...
... Rear wheel, 9 ... Seedling planting device, 14, 14 ... Outermost float, 15 ... Inner float, 19, 19
...A balanced body.

Claims (1)

[Scope of utility model registration request] In a riding type rice transplanter comprising a seedling planting device having a plurality of floats attached to the rear of a running body with four front and rear wheels so as to be able to rise and fall, the float in the seedling planting device has a surface that is the same as the bottom surface of the float. A wheel trace leveling device for a riding type rice transplanter, characterized in that a leveling body having a flat bottom surface is provided so as to protrude forward at a portion of the traveling machine body outside both left and right rear wheels.