JPH05103518A - Float structure of paddy field working machine - Google Patents

Abstract

PURPOSE:To enable smooth leveling of paddy field surface with a float of a paddy field working machine while preventing the flow of surface mud passing through the gap between the floats. CONSTITUTION:A plurality of broad floats 7,8 contacting with paddy field surface to level the working position of paddy field surface are connected to a working apparatus in a state to enable free and independent rolling and vertical motions. The side edge parts of adjacent floats 7,8 are positioned close to each other and the floats are connected in a state freely swivellable around the longitudinal axis P1 of the machine body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a float equipped on a working device in a paddy working machine such as a riding type rice transplanter or a direct seeder.

[0002]

2. Description of the Related Art In a riding-type rice transplanter, which is an example of a paddy working machine, a seedling planting device (corresponding to a working device) mounted on the rear portion of a machine body is disclosed, for example, in Japanese Patent Laid-Open No. 1-269421. ), There are three floats (16a, 16b, 28 in FIG. 7 of the above publication) arranged side by side for arranging the planting position of seedlings (corresponding to the work position for the rice field). The three floats are connected to and supported by the seedling planting device so as to be vertically swingable around the left-right axis (P6 in FIG. 7 of the above publication).

[0003]

In the above structure, the three floats are independently supported so as to be vertically swingable.
This is because when there is unevenness on the rice field, each float swings up and down independently along the unevenness to level the rice field. However, since the three floats are separated by a certain distance, the mud that passed between the floats is located inside the float from the lateral side of the float, especially when the mud on the rice field is soft. That is, the seedling may flow into the planting position side, and the seedling may be inclined. INDUSTRIAL APPLICABILITY As described above, the present invention prevents work failures such as tilting of seedlings due to the mud passing between the floats flowing into the working position against the paddy field (planting position of seedlings, direct seeding position of seeds, etc.). The purpose is to

[0004]

A feature of the present invention resides in the following construction in the float structure of the paddy working machine as described above. That is, a plurality of wide floats that ground on the rice field and level the work position against the rice field are connected to the work equipment so that they can move up and down and roll freely, and the lateral sides of adjacent floats are close to each other. Let
In addition, they are swingably connected to each other around an axis in the longitudinal direction of the machine body.

[0005]

With the above-mentioned structure, as shown in FIG. 1, for example, by connecting the lateral sides of the adjacent floats 7 and 8, there is almost no space between the floats 7 and 8,
The mud on the rice field does not pass backward between the floats 7 and 8. Since the lateral side portions of the floats 7 and 8 are swingably connected about the axis P1 in the machine front-rear direction, the floats 7 and 8 can swing up and down, respectively, and roll to the left and right respectively. It will be possible. As a result, the floats 7 and 8 swing up and down and roll in accordance with the unevenness of the rice field to smooth the rice field.

[0006]

As described above, the mud passing between the floats is prevented from flowing toward the working position for the paddy field (planting position of seedlings, direct seeding position of seeds, etc.), and It became possible to smooth the soil and prevent work failures such as tilting of seedlings and improve the working accuracy of the paddy work machine.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 3, a seedling planting device 3 (corresponding to a working device) is connected to a rear portion of the machine body supported by the front wheels 1 and the rear wheels 2 via a link mechanism 4 so as to be lifted and lowered so that paddy field work can be performed. A passenger type rice transplanter, which is an example of a machine, is configured. The seedling planting device 3 comprises four planting arms 5 for planting seedlings, a seedling stand 6 which is driven to reciprocate laterally left and right, floats 7, 8 and the like, and is configured in a four-row planting type. ..

Next, the floats 7 and 8 having a function of partially supporting the weight of the seedling planting device 3 and a ground leveling function will be described. As shown in FIGS. 1 and 2, a pair of left and right floats 7 and 8 are provided, and the left and right floats 7 and 8 are wide and have the same shape. A pair of left and right support arms 9 is provided obliquely rearward and downward from the seedling planting device 3, and the long holes 10a of the support portions 10 fixed to the rear portions of the floats 7 and 8 are provided.
The pin 9a of the support arm 9 is inserted in the. Due to the flexible structure of the pin 9a and the long hole 10a, the float 7,
8 swings up and down around the axis P2, P3 of the rear end of the support arm 9, and rolls around the axis P4, P5.

Hinge members 7a and 8a are fixed to the left and right lateral side portions of the floats 7 and 8, respectively, and the lateral side portions of the left and right floats 7 and 8 on the center side of the machine body are hinge members 7a and 8a.
It is swingably connected about an axis P1 (corresponding to the axis in the longitudinal direction of the machine body) by a.

With the above structure, the left and right floats 7 and 8 are spread over the entire width of the four sets of planting strips by the four planting arms 5.
Will touch the ground and level the field G. Then, the left and right floats 7 and 8 are aligned with the shaft centers P2 and P3 according to the unevenness of the rice field G.
It swings up and down around and rolls around the axes P4 and P5 to smooth the surface G of the rice field.

The left and right floats 7 and 8 are located on the rear side of the rear wheel 2. As shown in FIGS. 1 and 2, the recesses 7b and 8b for erasing the traces of the rear wheel 2 passing through are floats 7 and 8.
Is formed on the front lower surface. The recesses 7b and 8b are set so that the front side is wide and the rear side is narrower.
The width L1 on the rear side is set to be wider than the width L2 of the rear wheel 2.

The type shown in FIG. 1 is a four-row planting type. Since the floats 7 and 8 have exactly the same shape in plan view,
If the same float (not shown) is swingably connected to the right lateral side portion of the float 7 or the left lateral side portion of the float 8, the 6-row and 8-row type riding type Compatible with rice transplanters.

[Other Embodiment] As shown in FIG. 4, a pair of left and right symmetrical floats 7 and floats 8 having different shapes may be provided. In this case, the floats 7 and 8 have the axis P
2 and P3 are swingable up and down, are supported so as to be rotatable around shaft cores P4 and P5, and floats 7 and 8 are connected to be swingable around a shaft center P1 in the machine longitudinal direction.

As shown in FIGS. 5 and 6, the ground leveling plate 11 having both right and left lateral sides bent upward is used as floats 7 and 8.
It may be attached so as to be vertically swingable around the axis P6 at the rear end. The ground leveling plate 11 can also be applied to the floats 7 and 8 shown in FIG.

A structure as shown in FIGS. 7 and 8 may be provided for erasing the marks on the rear wheel 2. That is, the convex portion 7 slightly wider than the width L2 of the rear wheel 2 is formed in the center of the concave portion 7b of the float 7.
c, the width L3 of the rear side of the recess 7b is set wider than the width L2 of the rear wheel 2, and the width L4 of the rear end of the recess 7b is set to the width L.
The structure is set wider than 3. Further, the present invention can be applied not only to the riding type rice transplanter, but also to a walking type rice transplanter and a direct seeder for sowing seeds directly on the rice field.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a plan view near the left and right floats.

2 is a side view of the float

[Fig. 3] Overall side view of the riding rice transplanter

FIG. 4 is a plan view of the vicinity of a float in the first alternative embodiment.

FIG. 5 is a plan view of the vicinity of a float according to a second alternative embodiment.

FIG. 6 is a side view of the vicinity of the rear end of the float in the second alternative embodiment.

FIG. 7 is a plan view of the vicinity of a float in the third alternative embodiment.

FIG. 8 is a vertical sectional side view in the vicinity of a front portion of a float according to a third embodiment.

[Explanation of symbols]

 3 Working equipment 7,8 Float P1 Body longitudinal axis G G Taba

Claims (1)

[Claims] 1. A plurality of wide floats (7) and (8) for grounding a working position against a field by grounding on a field (G) are respectively movable up and down on a working device (3) and are each freely rolling. The floats (7), which are connected to each other and are adjacent to each other,
The float structure of the paddy working machine in which the lateral sides of (8) are close to each other and are swingably connected to each other around the axial center (P1) in the machine longitudinal direction.