JPH078034A - Walking type paddy field working machine - Google Patents

Abstract

PURPOSE:To obtain a walking type rice transplanter capable of improving the stability of a machine body and simultaneously suppressing production of butt on levee side. CONSTITUTION:The back side of a center float 10 is extended until the position at which the back end of a side float 11 coincides with the almost longitudinal position and also at the lower end position in vertically moving range of the side float 11, the bottom face of the side float 11 is positioned in a part upper than the bottom face of the center float 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a walking in which propulsion wheels are arranged on both sides of a center float, and side floats for arranging wheel marks are arranged behind the left and right propulsion wheels. Type paddy work machine.

[0002]

2. Description of the Related Art Conventionally, in the above walking type paddy working machine, the rear end of the center float is located in front of the rear end of the side float as shown in, for example, Japanese Patent Laid-Open No. 60-105415. It was placed in the state.

[0003]

In the case of adopting such a structure, it is required that the side float has a function of a so-called float, which is responsible for a part of the load of the body, behind the rear end of the center float. Therefore, it is necessary to increase the size of the center float. Therefore, a large side float was provided, but due to the large float, there is a strong tendency to push mud. And as side floats, there is a limit to the width expansion in the width direction due to the constraint of the spacing between planting lines, and in order to increase the size, the float must be long in the front and back, and then the rear end of the side float is When it is extended to the rear part, the turning radius drawn by the rear end of the side float becomes large when the turning operation is performed at the edge of the ridge, which causes an adverse effect of enlarging the headland. It is an object of the present invention to provide a device capable of eliminating the conventional drawbacks by changing the shapes of the side float and the center float.

[0004]

According to a feature of the present invention, the rear end of the center float and the rear end of the side float are arranged in substantially the same front and rear position, and the side float is grounded. It is configured such that it can swing up and down based on a change in pressure, and the bottom surface of the side float is located above the bottom surface of the center float even at the lower end position of the vertical movement range of the side float. , Its effects are as follows.

[0005]

In other words, by setting the rear end of the center float to the front and rear position substantially the same as the rear end of the side float,
Since the body weight is supported by the rear end portion of the center float and the side float, the supporting load of the side float can be reduced as compared with the conventional case. Moreover, since the bottom surface of the side float is located above the bottom surface of the center float, the side float performs only the ground leveling function for the wheel marks in the normal working posture, and when the aircraft tilts due to rolling, etc.
It will support a part of the weight of the aircraft.

[0006]

[Effect of the invention] The support load of the side float can be reduced,
Moreover, since the function is mainly only the leveling function for the traces of the wheels, the side float itself can be made smaller than before, and there is less mud pushing, and the rear end of the side float can be made smaller, resulting in a shorter overall length. Since it can be positioned on the front side as compared with the conventional one, the amount of headland formation is reduced.

[0007]

Embodiments will be described below with reference to the drawings. Figure 1
As shown in FIG. 3, the wheel transmission cases 3 and 3 are swingably mounted on the left and right sides of the transmission case 1 which also serves as a frame, around the horizontal axis.
And the left and right wheels 4 and 4 are supported on the rocking end sides of the respective wheel transmission cases 3 and 3 to support the airframe, and on the frame 5 extending from the mission case 1 to the front side. An engine 6 is mounted, and a planting case 2, a seedling planting device 8, and a steering handle 9 are provided at the rear of a tubular frame 7 extending rearward from the rear side of the mission case 1.
Furthermore, the center float 10 and the wheels 4,
The side floats 11 and 11 are arranged behind 4 to form a walk-type rice transplanter.

Next, the mounting structure of the center float 10 will be described. As shown in FIGS. 2 and 3, the handle support frame 12 extends rearward from the tubular frame 7, and the first bracket 13 swings back and forth on the handle support frame 12 via the lateral axis X. The second bracket 14 is freely pivotally supported, and the second bracket 14 is pivotally supported about the first bracket 13 around the axis Y in the front-rear direction. The rear end of the center float 10 is supported by the second bracket 14. The center float 10 is configured to swing up and down around the lateral axis X and to be able to perform rolling operation around the longitudinal axis Y. The rear end of the center float 10 extends to near the lower part of the handle 9. This center float 10 is, as shown in FIG.
The function of the sensor float 10 is to raise and lower the propulsion wheels 4, 4 by vertically swinging about the lateral axis X, and the left and right propulsion wheels 4, 4 by rolling around the longitudinal axis Y. Performs rolling control for swinging the back and forth.

The mounting structure of the side floats 11, 11 will be described. As shown in FIG. 4, a bracket 15 is attached to an intermediate position of the handle support frame 12, and a portal frame 16 for supporting the side float 11 is pivotally supported on the bracket 15 via an inclined axis P. Side floats 11 are attached to the left and right ends of the gate frame 16. The mounting of the side float 11 will be described in more detail. The support brackets 16A are mounted on the left and right ends of the gate frame 16, the receiving brackets 11A are mounted on the upper surface of the side float 11, and the brackets 16A and 11A are connected by the lateral pins 17. Then, the side float 11 is configured to be vertically swingable with respect to the gate-shaped frame 16. An urging spring 18 is provided at the mounting position of the lateral pin 17 to urge the side float 11 upward and the side float 1
A regulating member 19 that contacts the gate-shaped frame 16 from 1 is provided. When the regulating member 18 contacts the gate-shaped frame 16, the upward swing of the side float 11 is restricted to maintain a substantially horizontal posture. , It is possible to freely swing downward. In this way, since the side float 11 is configured to be prohibited from swinging to the forward tilted swinging posture, the groove traces by the side float 11 become deep and soil is removed from both sides of the field to remove soil on both sides. Does not form a mound of soil. Therefore, it is possible to avoid the conventional tendency that the weeding effect is deteriorated when there is a bulge formed in such a passage mark.

Side float 11 and center float 10
The relationship with is explained. As shown in FIG. 1, the center float 10 is arranged so that the rear end of the side float 11 and the rear end of the center float 10 are located at substantially the same front and rear position.
The rear end extends to the rear. As a result, as described in the section of the operation, the side float 11 can be made compact, and it is not necessary to have a large ground contact area having a long front-rear length as in the conventional case. Moreover, as shown in FIG. 3, the bottom surface of the side float 11 is
The upper end of the center float 10 is also positioned above the bottom of the range in which the vertical swing is performed. As a result, the side float 11 mainly performs the function of leveling the surface layer of the field surface, so that it mainly exerts the function for leveling the wheel marks and takes part of the weight of the aircraft when the aircraft rolls. To operate deeply.

[Other Embodiments] In the drawings, a fertilizer applicator is shown, but a fertilizer applicator may be omitted or the fertilizer applicator may be used as a sowing machine, which are collectively referred to as a paddy working machine. To call. Although the side floats 11 have a shape that oscillates in the opposite direction, the left and right side floats 11 may be independently lifted and lowered with respect to the handle support frame 12.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Side view of a walk-behind rice transplanter

FIG. 2 is a plan view showing an arrangement state of a center float and a side float.

FIG. 3 is a rear view showing an arrangement state of a center float and a side float.

FIG. 4 is a side view showing a mounted state of a side float.

[Explanation of symbols]

 4 Propulsion Wheel 10 Center Float 11 Side Float

Claims (1)

[Claims] 1. A center float (10) is provided on both sides of the float.
Walking type paddy field in which propulsion wheels (4) and (4) are arranged, and side floats (11) for wheel land leveling are arranged behind the left and right propulsion wheels (4) and (4), respectively. In the working machine, the rear end of the center float (10) and the rear end of the side float (11) are arranged such that they are located at substantially the same front and rear positions, and the side float (11)
Is configured to be capable of swinging up and down based on a change in ground pressure, and the bottom surface of the side float (11) is located below the bottom surface of the center float (10) even at the lower end position of the vertical movement range of the side float (11). A walk-behind paddy work machine that is positioned above.