JPS5833841Y2 - Line marker on rice transplanter - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a line marker used when planting seedlings by running a rice transplanter in a field.

In general, this type of line marker is supported in an overhanging manner on both sides of the machine body, and is plunged into the soil surface after plowing in a field, and is used to draw lines as the machine moves.

However, the conventional line-drawing marker is formed from a single rod-shaped member and has a circular cross section. Therefore, when drawing the line, the soil scraped on both sides by the marker is distributed around the circular periphery of the marker as shown in Figure 7. It went around to the back side of the marker along the surface, and the line formed on the soil surface was buried by the soil that went around and could not be left as a clear line.

Therefore, the present invention was devised to solve such problems, and its purpose is to provide a line-drawing marker that can draw very clear lines on the surface of the plowed soil and has good followability. , the grounding part of the line-drawing marker is approximately V-shaped, and in particular, the rear part of the line-drawing marker has a straight portion extending tangents rearward from both points of the maximum width of the semicircle, and the overall shape is approximately V-shaped. By forming a concave groove that opens rearward in the ground contact portion in a V-shape, it is possible to reliably draw a clear line.

Embodiments of the present invention will be described below based on the drawings.

The rice transplanter, which is generally indicated by number 1 in the figure, has a prime mover 3 mounted on a body 2 having a steering handle 11, and transmission cases 5, 5 that are swingable on both sides of the body 2.
The wheels 4, 4 are supported through the transmission cases 5, 5, and the wheels 4, 4 are connected to the prime mover 3 through an appropriate transmission mechanism in the transmission cases 5, 5.
A float 6 is provided at the lower part of the fuselage 2, and the front and rear parts of the float 6 are pivotally connected to the fuselage 2 via appropriate links to support the float 6. A planting claw 7 is provided at the rear of the machine body 2 and is connected to the prime mover 3 and driven while drawing a predetermined trajectory, and the rear end portion is located on the body 2 within the trajectory of the planting claw 7. Equipped with a seedling stand 8 with a high front and a low rear, and this seedling stand 8
The reciprocating device is connected to the prime mover 3 and driven to reciprocate along the L-shaped guide rod 10.

Note that this rice transplanter 1 is already known, and a detailed explanation of its structure and operation will be omitted.

Accordingly, the present invention provides line-drawing markers 12.12 on both sides of the rice transplanter 1 constructed as described above, and one of the line-drawing markers 12.12 will be explained below.

The line marker 12 is configured to be connected to a support rod 12 a whose one end is supported by the fuselage 2 and whose other end extends laterally outwardly of the fuselage 2, and to be connected to the free end of the support rod 12 a and grounded. The support rod 12a is cut out from the marker body 12b, and the support rod 12a is rotatably inserted into the cylinder shaft 13, the shaft rod 14 which is inserted and fixed into the cylinder shaft 13, and the tip of the shaft rod 14. A mounting rod 15 is attached to the shaft rod 14 through a cylindrical body 16, and a restriction plate 17 is fixed to the shaft rod 14 for restricting the forward rotation of the mounting rod 15. One end of a coil spring 18 wound around the outer periphery of the cylindrical body 16 is locked to the mounting rod 15, and the other end is locked to the restriction plate 17, so that the mounting rod 15 is always elastically urged forward. On the other hand, a support bracket 20 is fixed to the guide rod 10 via a support rod 19, and the support bracket 20
A plate body 21 is pivotally attached to the body 2 using one bolt 22 extending in the longitudinal direction of the body 2, and one end portion of the cylinder shaft 13, that is, one end portion of the support rod 12a is fixed to the plate body 21.

The marker main body 12b is made of synthetic resin, and its tip is curved toward the rear, and the cross-sectional shape of the marker main body 12b, especially at the ground contact portion, is approximately U.
A groove 28 is formed in the marker main body 12b so as to form a letter shape, and the groove 28 is opened rearward while leaving the base thereof, and a through hole 23 that fits with the mounting rod 15 is formed in the base of the marker main body 12b, The lower end of the mounting rod 15 is rotatably inserted into the through hole 23, and the lower end of the mounting rod 15 is fitted with a flat washer 24. The marker main body 12b is fixed to the mounting rod 15 by inserting the pin 25, whereby the marker main body 12b is rotatably connected to the free end of the support rod 12a.
The tip of the marker main body 12b is configured to be movable laterally outward of the body 2.

In addition, 26 in the figure is a handle fixed to the cylinder shaft 13,
The cylinder shaft 13 is rotated by holding the handle 26 or by jumping up with the foot to raise the cylinder shaft 13.

Reference numeral 27 in the figure is a coil spring interposed between the handle 26 and the support bracket 20, and when the coil spring 27 is located on the left side of the bolt 22 in FIG. When located on the right side, it acts to maintain the cylinder shaft 13 in the upright position (marker storage position), and prevents the so-called unstable switching mechanism of the cylinder shaft 13. It consists of

The line-drawing marker 12.12 of the present invention is constructed as described above, and when line-drawing work is not being performed, for example, when the rice transplanter 1 is running on the road, the line-drawing marker 12.12 is rotated so that the cylinder shaft 16 stands up. 12 is folded and stored on the fuselage 2 side, and when in use, the cylinder shaft 16 is rotated so as to lie down, so that the line-drawing marker 12.12 protrudes laterally and outwardly from the fuselage 2, and the marker 12.12 is The ground-contacting parts, that is, the marker bodies 12b, 12b are plunged into the soil surface after plowing in the field, and lines are drawn on the soil surface as the machine body 2 travels.

However, when drawing a line as described above, the marker body 1
2b, 12b, that is, the flow of soil swept away by the ground contact part flows linearly backward in the direction of movement of the aircraft 2 along both sides of the marker body 12b, 12b, as shown in FIG. The circulation of the soil into the groove 28 is cut off by the open edge of the groove 28. That is, the soil scraped by the marker bodies 12b, 12b as in the conventional case shown in FIG. There is no possibility of it going around to the back side along the circumferential surface.

Note that although a countercurrent (eddy current) of soil occurs at the open edge of the recess 28, the amount of soil that flows around the back side of the marker body due to this countercurrent is extremely small, and the line formed on the soil surface is There is no way to bury it.

As explained above, the line-drawing marker according to the present invention has a cross-sectional shape of the ground contacting part such that the semicircular shape is provided in the front part, the straight part is provided in the rear part, and the ground contacting part is opened rearward so as to have an approximately U-shape as a whole. Since the concave groove is formed and the connection of the marker body to the support rod is rotatable, when the ground contact part is plunged into the soil surface after puddling and the line is drawn as the machine moves, this The soil swept away by the ground contact part flows linearly along both sides of the ground contact part towards the front and back of the aircraft's movement, and the so-called circulation of the soil to the back side of the ground contact part is cut off by the open edge of the groove. As a result, the line formed on the soil surface is not buried and can be left as a very clear line.Furthermore, since the grounding part of the line marker is rotatable, the tip of the marker body can be actively displaced laterally and outwardly of the aircraft to follow the turning of the aircraft, which may damage the line marker or damage the connection of the marker body to the support rod. It is possible to eliminate such fears.

Moreover, by forming the concave groove in the ground contact area as described above, it is possible to reduce the weight and make it easier to handle.For example, when a line marker is not required when turning the aircraft,
The marker is swung upward, and in this case the marker can be easily swung with one hand.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a rice transplanter equipped with the delineation marker of the present invention, Fig. 2 is an enlarged side view of the same essential parts, Fig. 3 is a partially cutaway front view showing the delineation marker of the present invention, and Fig. 4 5 is an enlarged cross-sectional view of the same essential part, FIG. 5 is a cross-sectional view taken along the line ■--■ in FIG. 4, FIG. 6 is an explanatory diagram of the operation of the present invention, and FIG. 12... Line marker, 12 b...
- Marker body (grounding part), 28...concave groove.

Claims (1)

[Scope of utility model registration request] A line-drawn marker supported on the lateral outside of the aircraft body, the cross-sectional shape of the ground contact portion being approximately semicircular at the front with respect to the traveling direction of the aircraft, and the rear being tangent to the rear from both points of the maximum width of the semicircle. It has a straight part as if it were extended, and a concave groove that opens backwards is formed in the ground contact part so that the whole is approximately U-shaped, and the connection of the marker body to the support rod can be freely rotated. A line marker for a rice transplanter that is characterized by