JPS58193607A - Rice planter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rice transplanter, and more particularly to a rice transplanter with improved floats.

As a type of float type rice transplanter, a two-float type rice transplanter is known which is equipped with two floats on both sides of the machine body. These side floats cannot protrude much to the sides due to the relationship with the already planted seedlings (planting spacing), so in order to secure the desired buoyancy, it is necessary to configure the floats to be long along the direction of the aircraft's movement. For this reason, side-float type rice transplanters have problems such as long notebooks, a lot of mud pushing against adjacent already planted seedlings, and poor ground leveling ability for planting rows.

In view of the above-mentioned circumstances, the present invention provides a rice transplanter that prevents negative effects such as mud pushing on adjacent already planted seedlings even if the side floats are configured to be long, and that also has improved soil leveling ability. This is what I am trying to do.

For this purpose, the present invention provides a side float with a linear float part extending along the direction of movement of the machine body, and a front part continuous to the front end side of the linear float part and whose front end is bent toward the center of the 81 transplanter body. A flow passage above the muddy water flowing laterally along the front float part is formed at the bending position of the boundary between the two float parts so as to guide the muddy water flowing laterally into the inside of the straight float part. The position of the front toe part is determined so that the ground can be reliably leveled on the attached row, and a leveling piece is formed on the inner edge of the straight float part to extend over the Wp movement trajectory of the base HII. It is something that

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the structure of the present invention shown in the accompanying drawings will be described. First of all, Fig. 1 is a plan view of the present invention applied to a four-row planting type walk-behind rice planter, in which an engine 2 is mounted on the main body of the rice transplanter designated by reference numeral 1, and the output of this engine 2 is is transmitted via belts 21 and 22 to a transmission 31 that constitutes a drive system for the wheels 3, etc., and an oil pump 32 that is a vertical movement mechanism that lowers the wheels 3 depending on the depth and depth of the tiller. There is. The wheels 3 are supported by a shaft 35 at the end of a swing arm 34 coaxially supported with the output shaft 33 of the transmission 31, and are rotationally driven via a transmission mechanism built into the swing arm 34. It has become.

Further, the oil pump 32 is capable of supplying pressure oil to a cylinder 36 installed in the rice transplanter main body 1, and a balance rod 37 is attached to the end of a piston 36a fitted in the cylinder 36. They are pivoted so that they are perpendicular to each other. One end of a connecting rod 38 that can be expanded and contracted slightly is pivotally attached to both ends I and - of the balance rod 37 arranged along the width direction of the rice transplanter main body 1, and the other end of this connecting rod 38 Part 1 is connected to a torque arm 39 whose end is fixed to the swing arm 34, and the piston 3
The telescopic movement of the wheel 6a causes the swing arm 34 to swing vertically via the balance rod 37, the connecting rod 38, and the torque arm 39, thereby moving the wheel 3 up and down.

At the rear end of the rice transplanter main body 1, there is a product platform string movement mechanism 5 that reciprocates the seedling U platform 4 along the width direction, and extends from the seedling platform drive 11415 along the width direction. The four-row Mitt! A table 4 is supported and reciprocated in the width direction, in other words, in a direction orthogonal to the work progress direction, by a seedling table drive 1 [5. Seedling receiving plate 4 arranged along the lower edge of the seedling platform 4
1, a seedling take-out port 41a is formed corresponding to the planting mechanism 52 that moves up and down, and the seedling mat placed on the seedling platform 4 is cut out for each seedling and planted on the field surface. It has become so.

A side float 6 is arranged on the outside of the left and right wheels, and this side float 6 includes a straight float part 61 extending along the work progress direction and a straight float aI.
It is formed by a front float part 62 having a shape in which the front end of the rice transplanter 161 is bent toward the center line of the rice transplanter. The white line float part 61 forming the side float 6 is connected to the wheel 3 from a position slightly closer to the front end just below the upper edge of the seedling stand 4.
The connecting part 6a has a length extending along the work progress direction to the leading edge position of the rice transplanter main body 1, and a connecting part 6a extends in an arc toward the center of the rice transplanter main body 1 from the front end part 61a of the linear float part 61 at a high position away from the rice field. It is drawn and extended. A front float part 62 is formed at the tip of this connecting part 6a, and the front edge 62aG of this front float part 62 draws an arc continuous with the connecting part 6a, and is located near the center of the rice transplanter main body. The edge is a straight edge 62b parallel to the center line.

This straight edge 62b extends in the direction of work progress, and its rear end forms the rear end of the front float 2, and the outer edge 62c of the front float 62 has a gentle curve. This outer edge 82c and the linear flowmeter part 6
1 and the space below the connecting portion 6a is a flow passage 63 in which the inner and outer regions of the side float 61 are communicated with each other through a space including a circular surface. The rear end portion 62d of the float portion 62 is slightly thinner and extends slightly rearward.
The area on the extension line of the movement locus of the outer planting machine 52 is leveled by a float section having another leveling function. That is, on the inner edge of the linear float part 61, there is a ground leveling part 61b that protrudes toward the rear of the planting machine 52 and toward the wheels 3 at a position directly in front of the planting machine 52 at the outermost position behind the planting machine 52. is formed.

The side float 6 has a part near the rear end that is attached to the rice transplanter body.
It is pivoted by a pivot pin 64 arranged along the width direction, and when changing the front end, the end 62a of the horizontal sensing rod 1 is connected to the link 71 at the tip 62a of the front float part 62. The lower end of the switching rod 72 is pivotally connected to the intermediate fire position of the horizontal sensing rod 1, and the upper end thereof is connected to the oil passage switching valve of the oil pump 32 of the vertical movement mechanism of the wheels 3. ing. As a result, changes in the buoyancy applied to the front float of the side floats 6 at shallow and shallow depths of the tiller are transmitted to the switching rod 72, and from the oil pump 32 to the cylinder 36.
The position of the switching valve provided in the oil passage leading to the is selected, and the vertical movement of the wheel 3 is controlled by the expansion and contraction of the piston 36a.

Next, a rice transplanting operation using the rice transplanter according to the present invention will be explained. First, in the case of a walk-behind rice transplanter, part of the total weight of the rice transplanter is supported by the buoyancy of the foot, and the weight is supported by the wheels being in contact with the tiller. 3 progresses by being forcibly driven by a part of the output of the J resin 2, and as this progresses, the planting mechanism 51 cuts out the seedling pine 1- and plants the seedling, thereby performing the so-called rice planting work. This involves using floats to level the field in front of the rice planting process.

In particular, the side floats 6 on the outside of the wheels 3 not only support the weight of the rice transplanter main body, but also support the front flap 62 formed at the front end of the straight float part 61 of the rice transplanter main body. It extends inward, making the leveling width wider. From the edge 62a of the front float part 62(7)6Q to the outer edge 62c (), resistance from mud is felt as the work progresses.
) However, since the outer edge 62c sweeps the mud in the width direction of the rice transplanter body and towards the rear, the resistance is small.

In particular, the curved leading edge 62 of the front flow section 1-62
The mudflow swept away by step a spreads along the curve of the leading edge 62a in the width direction of the rice transplanter, but if the mudflow continues to spread as it is, it will be inconvenient to measure the pine seedlings in the already planted rows. Therefore, near the end of the straight edge 62b facing the flow of mud,
In other words, mud is guided inside the side float 6 from a flow path 63 that is formed near the connection point between the straight float section 61 and the front float section 62 and connects the inside and outside surfaces of the side float 6. This prevents mud from spreading in the width direction.

Furthermore, the ground is leveled on the moving trajectory of the front float [1-upper part 62 is planted near the center], and the leveling piece 61 of the linear float part 61 is leveled.
In b, the ground is leveled on the trajectory of the outer planting machine to prevent mud from being lifted up by the wheels.

Although the above explanation uses a walking rice transplanter, it may also be used as a rice transplanter without wheels, that is, one that is connected to a passenger vehicle, or one that has a center float between side floats. There may be.

As is clear from the above explanation, the rice transplanter of the present invention
At the front end of the side floats located on both sides of the jI machine body,
Continuing with this, a front float is formed via a connecting part that is bent toward the inside of the rice transplanter body, and a flow path that connects the space between the straight float part and the front float part, including the rice field. Furthermore, a leveling piece is formed on the inner edge of the side float that extends over a surface that includes the movement trajectory of the outer planting machine, and the front float is arranged on an extension of the movement trajectory of the inner planting machine. Because of this structure, although the side floats have a certain buoyancy, the length of the straight float part along the work progress direction is shortened, and the mud generated by the front float part in the first half is transferred from the flow path to the side floats. Because it is introduced inside the front float part, it is possible to prevent negative effects such as knocking down the seedlings in the planted rows due to the mud pushing by the floats, unlike in the conventional side-type rice transplanter. and a straight line) [J- The upper leveling piece can reliably level the ground on the planting row, and since this leveling piece is close to the wheels, it can suppress the lifting of mud by the wheels.

[Brief explanation of the drawing]

The accompanying drawings show an embodiment of the rice transplanter of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a side view of the same, and FIG. 3 is a partial front view of the rice transplanter. DESCRIPTION OF SYMBOLS 1... Rice transplanter body, 2... Engine, 3... Wheels, 31... Transmission, 32... Oil pump, 34... Swing arm, 36... Cylinder, 37... Balance scale, 38...Connecting rod, 4...
Seedling mounting stand, 41... Seedling receiving plate, 41a... Cutting opening, 5
... Seedling platform movement mechanism, 51... Planting mechanism, 6...
・Side float, 61... Straight flow upper part, 62・
...Front float section, 63...Flow path. 10-

Claims (1)

[Claims] (1) In a rice transplanter that has 11 floats along both sides of the rice transplanter body, the side floats have a long straight float part along the work progress direction and a continuous float part on the front end of this straight float part. A front float part is provided, the front end of which is bent toward the center of the rice transplanter main body, and there is a flow path near the boundary between the two parts that communicates the inside and outside areas of the side floats in a space including the rice field. The rice transplanter is characterized in that the straight float part is located on the extension line of the movement trajectory of the inner planting machine, and the linear float part forms a land leveling piece that extends on the extension line of the movement trajectory of the outer planting machine.