JPS584521B2 - 3-row rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has a structure in which the weight of an aircraft is shared and supported by a pair of left and right propulsion wheels and a ground float attached to the side of the wheels so as to be able to swing vertically relative to the aircraft. Regarding row rice transplanter.

Conventionally, a two-row rice transplanter places one ground float between the left and right wheels, and one row of planting spots is set on each side of the float, while a four-row rice transplanter places one ground float between the left and right wheels. It is equipped with a central float located at the top of the wheel and side floats located on both sides of the wheel, and is configured to set a total of four planting spots with a ridge between each float. In the case of a 3-row rice transplanter, the wheels and floats overlap in the front and rear directions in order to prevent the overall length of the machine from becoming unnecessarily large, and there is always a mud leveling section in front of the planting area. In general, it is not possible to arrange multiple floats in order to meet the preconditions such as the need for a symmetrical arrangement in order to maintain good straightness, and in general, it is not possible to arrange multiple floats. As shown in Figure 2, a single wide float with leveling sections formed on both sides and in the center was installed between the left and right wheels. A large amount of muddy soil pushed out in the central part flows out to the side of the planted seedlings, which tends to cause problems such as pushing down the seedlings.Also, since the muddy water does not flow into the central part, the water content is low. Therefore, in order to prevent mud from being pushed by the front part of the float and to prevent mud from adhering to the nails, the float was placed near the planting site to prevent mud from sticking to the nails. In consideration of guiding the muddy water, the configurations shown in Figure 5 B and C can be considered, but in the configuration shown in B, the straightness is poor because the float is asymmetrical as described above, and in the three float configurations shown in C, However, since the wheels must be provided forward of the front end 1 of the float, the entire fuselage becomes too long.

The present invention has been made in view of the above circumstances, and aims to improve mud sweeping, improve straight running performance, and simplify the structure through a rational structure of the float.

Embodiments of the present invention will be described in detail below with reference to illustrative drawings.

A transmission case 1 for vehicle speed change is connected to an engine E mounted on the front of the aircraft, and wheel transmission cases 3, 3, which have propulsion wheels 2, 2 rotatably attached to the left and right sides of the mission case 1, respectively, are attached to the horizontal axis. A seedling platform 4, which is pivotally connected around the core so that it can freely swing up and down, is attached to the rear of the machine so as to be able to reciprocate from side to side, on which mat-shaped seedlings are loaded, and seedling planting claws 5 are arranged so as to draw an elliptical trajectory. The float device 6, which is long in the longitudinal direction of the fuselage, is connected to the fuselage so that the front end can swing vertically around the rear end, and the buoyancy of the float device 6 and the grounding of the wheels 2, 2 are controlled. The seedling planting section 7 is configured to be kept floating at a constant height on the mud surface by the reaction force, and while the propulsion wheels 2 are used to advance the machine, the planting claws 5 are used to separate one plant from the matted seedlings. It is constructed as a walk-behind rice transplanter that takes out seedling blocks and plants them at a constant depth below the mud surface.

The float device 6 is constructed as follows.

That is, the left and right floats 6a, 6 have symmetrical shapes, and the seedling planting leveling parts 6a', 6b' are set at the outer edge portions of the floats 6a, 5b, slightly behind the middle position in the front-rear direction.
b are arranged in parallel between the left and right propulsion wheels 2, 2, and the left and right floats 6a, 6 are connected by connecting members 14, 15 at the front and intermediate parts, respectively.
b while maintaining a predetermined interval L, and the float 6 in plan view
A leveling plate 16 extending from near the center in the longitudinal direction of a, 6b to the front of the seedling planting device 18 installed at the rear of the machine is attached to the intermediate connecting member 15, and the left and right floats 6a, 6
The soil leveling parts 6 a', 6 b' and the leveling plate 16 level the mud at three locations, improve the mud sweeping performance as mud passes between the left and right floats 6a and 6b, and improve the mud-sweeping performance. It is designed to enhance sex.

The seedling planting section 7 is constructed as follows.

The structure is such that drive is inputted from the engine E at the front of the fuselage to the planting mission 8 at the rear of the fuselage via an appropriate transmission mechanism. 10. A feed shaft 11 for reciprocating the seedling platform 4 that is driven by engaging with the groove of the helical shaft 10 is mounted on the shaft,
A sprocket 9a provided on the drive shaft 9
, 9b to transmit driving force to the left and right seedling planting mechanisms 7a and 7b, respectively, by the chain transmission devices 12 and 13, and the left seedling planting mechanism 7a is equipped with planting devices 17 and 1B on the left and right, and the right seedling planting mechanism 7b is equipped with a planting device 19 only on the right side, thereby planting three rows of seedlings in the area leveled by the float device 6. It is structured as follows.

In summary, the characteristic configuration of the three-row rice transplanter according to the present invention is that a pair of left and right floats each having a seedling planting site leveling section are juxtaposed and connected at a predetermined interval, and when viewed from above, from the vicinity of the longitudinal center of the floats. , a ground leveling plate extending over the front part of the seedling planting device installed at the rear of the aircraft is arranged between the two floats with an interval sufficient to allow passage of muddy water between the inner edges of the two floats; Further, a planting device is provided for planting seedlings at the rear position of the ground leveling section of these floats and at the rear position of the ground leveling plate, and from this configuration, the following effects can be achieved. be effective.

In other words, the above-mentioned ground leveling plate is arranged between the left and right floats which are spaced apart, and the central part of the three rows is planted.Since the floats are spaced apart from each other by a predetermined distance, the mud can be swept easily. In addition, the left and right floats can be made symmetrical or close to symmetrical to improve straightness, and since muddy water can pass through both sides of the leveling plate, the planting nails in the center can be easily It is possible to guide muddy water well near the attachment point, weaken the degree of mud adhesion to the nails, and perform a good seedling scraping action.Furthermore, another center float can be installed between the left and right floats. Since only a leveling plate with a simple structure is provided, the overall structure of the float can be simplified.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the three-row rice transplanter according to the present invention,
Fig. 1 is a side view, Fig. 2 is a plan view, Fig. 3 is a plan view of the float device, Fig. 4 is a schematic plan view showing the transmission system, and Fig. 5 A, C, and C show comparative examples, respectively. It is a top view of a float. 2, 2... Propulsion wheels, 5a, 6b...
...Float, 6 a' t 6 b'... Ground leveling section, 16... Ground leveling plate, 17, 1B, 19...
...planting device.

Claims (1)

[Claims] 1 A pair of left and right floats 6a and 6b, each equipped with a seedling planting ground leveling section 6 a' t 6 b', are juxtaposed and connected at a predetermined interval L, and the float 6
A leveling plate 16 extending from near the center in the longitudinal direction of a and 6b to the front of the seedling planting device 18 installed at the rear of the machine is placed between the floats 5a and 5b and between the inner edges of the floats 6a and 6b. The floats 6a and 6b are arranged at a sufficient interval to allow passage of muddy water between the floats 6a and 6b.
a', 6 b' rear position and the ground leveling plate 1
Planting devices 17, 18, in order to plant seedlings in the rear position of 6.
A 3-row rice transplanter characterized by having 19 arranged therein.