JPH0211204B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a walking rice transplanter, and more particularly to a walking rice transplanter that reduces resistance while traveling in a field.

[Conventional technology]

In most conventional walk-behind rice transplanters, one end of the swing arm, which also serves as a transmission case, is supported via a pivot on both the left and right sides of the machine, and the free end of the swing arm has an axle that is coaxial with the axis of the chain wheel. Wheels are attached through the swing arm, and a float is attached between the swing arms for the purpose of leveling the ground and supporting the rice transplanter with buoyancy. moreover,
A seedling stand is provided at the rear of the machine, and the seedling pine seedlings on the seedling stand are taken out one by one by a seedling planting body from the seedling outlet of the seedling receiving plate, and the seedlings can be planted.

[Problem to be solved by the invention]

The walk-behind rice transplanter constructed in this way is designed so that the wheels move up and down depending on the depth of the tiller in the field, so that the seedlings are planted at a constant depth. In the field, the swing arm rotates downward to bring the wheels into contact with the tiller, bringing them close to the center float. Therefore,
When traveling in the field, mud tends to become clogged between the free end of the swing arm and the center float, and as the amount of mud increases, the running resistance increases, reducing the efficiency of planting work, and causing serious problems. in case of,
In some cases, the clumps of mud pushed the mud from the field to the sides, making the field rough.

[Means to solve the problem]

Therefore, this invention aims to prevent mud from clogging the gap between the free end of the swing arm and the center float.To this end, swing arms that also serve as transmission cases are provided on both the left and right sides of the aircraft body. In this walk-behind rice transplanter, which has a wheel attached to the free end of the swing arm and a center float between the left and right swing arms, the center float is divided into two parts in the front and back direction, and a sensing float located on the front side of the machine body; a support float located on the rear side of the free end of the swing arm and having a support part narrower than the seedling planting row spacing extending therefrom; characterized in that at least the free end of the

[Effect]

With the above configuration, even if the plowing platform is deep and the free end of the swing arm pushes the mud to the side, this mud will be pushed to the intermediate position between the front and rear floats of the center float.
The ground is leveled by the rear float, which does not adversely affect seedling planting.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the structure of the present invention shown in the accompanying drawings will be described. First, in the plan view shown in FIG. 1, the aircraft body indicated by reference numeral 11 includes an engine,
A reduction gear, an oil pump, and further attached mechanisms are mounted on the tower, and a swing arm 1 which also serves as a chain case is connected to the left and right sides of the aircraft body 11 via a pivot.
2 is pivotally mounted so that it can rotate around its axis. Furthermore, an axle 13 that also serves as a chain wheel axle is protruded from the free end of the swing arm 12, and a wheel 14 is attached to this axle 13. On the outside of this wheel 14, a swinging arm 15,
Side floats 16, 16 are attached via 15, and these side floats 16, 16 have on their inner surfaces a leveling protrusion 16a for leveling the outermost example of the four rows of planting.

Further, a seedling holder 18 is attached to the rear of the body 11 and is moved laterally by a moving mechanism 17, and the seedling pine placed on the seedling holder 18 is transferred from the seedling take-out port 18a by a seedling planting unit. It is constructed so that it can be taken out one by one and planted.

A center float 20 is attached to the lower side of the fuselage 11, which generates buoyancy with mud in the field and supports the fuselage 11 together with the wheels 14.
This center float 20 is provided in a space S narrowed by a front sensing float 21 which has a detection function to move the wheel 14 up and down by sensing the depth of the tiller, and a swing arm 12, and behind the free end thereof. , leveling the ground, and a support float 22 that obtains supporting force by buoyancy. That is, the free end of the swing arm 12 is located in the intermediate space between the sensing float 21 and the support float. The front end of this support float 22 has a wide part W that is wider than the planting row spacing P, and this wide part W
The rear part is an extension part 2 whose width E is narrower than the planting row spacing P.
It's becoming 2a. In addition, the sensing float 21
The width of the support float 22 may be wider or narrower than the wide part W of the support float 22, but it is necessary to have a shape that can reliably move up and down depending on the depth and shallowness of the tiller.

In the above explanation, the front end of the support float 22 is located behind the line connecting the rear ends of the left and right swing arms 12, but as shown in FIG. 3, the support float 22 and the sensing float 21 In order to increase the space between the left and right swing arms 12, the rear end of the sensing float 21 may be located forward of the line connecting the front ends of the left and right swing arms 12.
The sensing float 21 may also be wider than that shown in FIG. 1, as shown in FIGS. 3 and 4.

Since the walk-behind rice transplanter of the present invention has the above-described configuration, when the wheels 14 move to a deep place in the tiller, the buoyancy generated on the sensing float 21 becomes large.
The swing arm 12 rotates downward due to the change in buoyancy, and attempts to bring the wheels 14 into contact with the tiller. In this case, the part near the free end of the swing arm 14 approaches the field, but the swing arm 12
Since a wide space is formed especially on the inside near the free end of the swing arm 12, the mud that has been pushed through by the swing arm 12 flows without resistance and does not form clumps, so that so-called mud removal can be performed without resistance. The mud pushed out laterally is leveled by the support floats 22.

〔Effect of the invention〕

As is clear from the above description, the walk-behind rice transplanter of the present invention is configured by dividing the center float located between the left and right swing arms into two into a sensing float and a support float, and Because at least the free end is located in the space between the sensing float and the support float, mud will not get stuck inside the swing arm even in fields with deep tillers or fields with locally deep areas. , the rice transplanter can run with less resistance. In addition, the mud pushed out by the swing arm is leveled by the support float, allowing for good rice planting work.

[Brief explanation of drawings]

The attached drawings show an embodiment of a walking rice transplanter according to the present invention, in which FIG. 1 is a schematic plan view, FIG. 2 is a side view of the same, FIG. 3 is a schematic plan view of another embodiment, and FIG.
The figure is a schematic plan view according to yet another embodiment. 11... fuselage, 12... swing arm, 13
... Axle, 14 ... Wheel, 15 ... Swing arm,
16...Side float, 17...Movement mechanism, 1
8... Seedling stand, 20... Center float, 2
1... Sensing float, 22... Support float.

Claims (1)

[Scope of Claims] 1. A walk-behind rice transplanter that is provided with swing arms that also serve as transmission cases on both left and right sides of the machine body, wheels are attached to the free ends of the swing arms, and a center float is provided between the left and right swing arms, as described above. The center float is divided into two parts in the front and back direction, with a sensing float on the front side of the aircraft body and a support part on the rear side of the free end of the swing arm that is narrower than the seedling planting row spacing. A walk-behind rice transplanter comprising: a float, wherein at least a free end of a swing arm is located in a space between the floats before and after the center float.