JPH0221769B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ridge mowing method and apparatus for mowing ridges using a cutting blade attached to a traveling machine that travels on the ridge surface.

For mowing the ridges of rice fields and fields, there is still no suitable dedicated mower, so people have no choice but to cut by hand with a sickle or use a brush cutter instead. With the Bratscutter, flat ridges can be mowed smoothly, but mowing sloping ridges is difficult because the cutting position is strained, so the ridges were cut by hand. For this reason, the mowing of the ridges, which had to be done many times a year, and the distance to be mowed was extremely long, required a great deal of labor.

The present invention was made in order to solve the above-mentioned problems, and it is possible to perform all-mechanical mowing of ridge grass by running a traveling machine body having a cutting blade whose cutting surface is in a horizontal or inclined state on the ridge surface. The purpose of the present invention is to provide a new method and device for mowing ridges.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 to 5, (1) is a traveling body that travels on the ridge surface X and is gate-shaped. (2) is a tire that is mounted between both hanging parts 1a of the traveling body 1. (3)
is attached to a horizontal bar 4 built on the back of the traveling body 1 with a hand handle so as to spread out into a bifurcated shape toward the rear. (5) is the engine and the flat part 1 of the traveling aircraft 1
b via the outer casing 6 of the centrifugal clutch. This outer casing 6 is attached to the flat part 1b of the traveling body 1 with the hollow shaft part 6a continuous to the lower surface hanging down from the hole 7 in the flat part 1b of the traveling body 1. Reference numeral 8 denotes a drive shaft inserted into the hollow shaft portion 6a of the outer casing 6, which is connected to the engine 5 via the centrifugal clutch, and whose lower end 8a protrudes from the hollow shaft portion 6a and is attached to a cradle 9.
Supported by Reference numeral 10 denotes a pulley attached to the lower end 8a of the drive shaft 8; 11, the boss portion 11a at the base end is fitted into the outer periphery of the hollow shaft portion 6a of the outer casing 6;
The boss portion 11a is an arm attached so that its tip can reciprocate on a horizontal arc, and the boss portion 11a has a split structure having a joining piece 11b. Reference numeral 12 denotes a lever that is screwed onto the joining piece 11b of the arm boss portion 11a so as to move one side forward and backward.By rotating this lever 12, the boss portion 11a can be fixed to the hollow shaft portion 6a or released. The orientation of 11 is determined. Reference numeral 13 denotes a bracket suspended from the tip 11c of the arm 11, and 14 is a vertical tube rotatably attached to the vertical cylindrical portion 13a of the bracket 13, which rotatably supports the vertical shaft 15 inside. Reference numeral 16 denotes a pulley attached to the upper end of a vertical shaft 15 projecting upward from the vertical pipe 14, and the other of the pulleys 17, which are attached to the pulley 10 at the lower end 8a of the drive shaft, is hung on this pulley 16. Reference numeral 18 is a right-angled tube attached to the lower end of the vertical tube 14, and a horizontal shaft 19 is rotatably supported within a horizontal tube portion 18a that projects forward. 20 is located inside the right-angled tube 18 and connects the vertical shaft 15 and the horizontal shaft 19.
21 is a horizontal pipe portion 18a of the right angle pipe 18
A vertical pipe part 21b located at the front is a head pipe to which a horizontal pipe part 21a for combination is rotatably glued to the outer peripheral surface of the head pipe.
It rotatably supports a rotating shaft 22 of a cutting blade, which will be described later. 23 is located inside the head pipe 21 and is connected to the horizontal axis 1.
9 and the rotating shaft 22, two bevel gears 24
is a cutting blade and is attached to the lower end of the rotary shaft 22 that protrudes downward from the vertical pipe portion 21b of the head pipe 21. 25
is a fan-shaped cover of the cutting blade 24 and is attached to the lower end of the vertical pipe portion 21b of the head pipe 21. Reference numeral 26 denotes a cutting height stabilizing plate that rotates integrally with the cutting blade 24, and the traveling machine body 1,
Tire 2, arm 11, bracket 13, vertical tube 1
4. The dimensions of the right angle tube 18 and the head tube 21 are determined. Reference numeral 27 is a lever for changing and adjusting the direction of the cutting surface of the cutting blade 24, and the lower end shaft portion 27a is connected to the traveling machine body 1.
It is rotatably attached to a metal fitting 28 hanging from the horizontal bar 4 of. 29 is a groove wheel attached to the lower end shaft portion 27a of the lever 27, and this groove wheel 29 is attached to the head pipe 2.
The other of the wires 30 is hung in the groove 21c on the outer periphery of the horizontal tube part 21a. Reference numeral 31 is a parallel rod having approximately the same length as the arm 11, and its base end is pivoted to the inner surface of the hanging part 1a of the traveling body 1 so as to be parallel to the arm 11, and its tip end is connected to the vertical tube 1.
It is pivoted to an arm bracket 32 attached to 4. Reference numeral 33 denotes an accelerator lever attached to the manual handle 3, and is directly connected to, for example, a carburetor of the engine 5. In addition, 34 is a screw for adjusting the tension of the adjustment belt 17, and 35 is a screw for adjusting the tension of the adjustment band 17.
1 is a screw for preventing the wire 30 from falling off; 36 is a screw for fixing the wire 30 to the groove 21c on the outer periphery of the head tube 21; 37 is a spacer bracket for the wire 30; This is a cover for covering the

Now, after driving the engine 5 on the ridge surface X, when the accelerator lever 33 is pulled, the rotation speed of the engine 5 increases and the centrifugal clutch is engaged, so that the rotation of the drive shaft 8 is controlled by the pulley 10, the adjustment band 17, and the adjustment. car 16, vertical axis 15,
It is transmitted to the rotating shaft 22 via the bevel gear 20, the horizontal shaft 19, and the bevel gear 23, and the cutting blade 24 rotates. When you release the accelerator lever 33, the rotation speed of the engine 5 decreases, the centrifugal clutch disengages, and the cutting blade 24 stops. Therefore, if you hold the handle 3 and push the traveling machine body 1 forward while pulling the accelerator lever 33, the cutting surface The grass on the ridge top surface X can be mowed by the cutting blade 24 which rotates in the horizontal state shown in FIG.

Next, when mowing the grass on the right side of the ridge Y in the direction of travel, stop the engine 5 or release the accelerator lever 33 to stop the mowing blade 24, and first move the lower right of the engine 5. After loosening a certain lever 12 and swinging the arm 11 to the right as shown by the phantom line in FIG. 2, the arm 11 is fixed in the position shown by the phantom line in FIG. 2 by turning and tightening the lever 12. Parallel rod 3 when moving arm 11
1 acts to rotate the vertical tube 14 in the opposite direction by the same angle as the rotation of the arm 11, so that the head tube 21
The direction of is unchanged as shown by the imaginary line in Figure 2. Next, when the lever 27 standing between the handles 3 is tilted to the right as shown by the imaginary line in FIG. Since it is turned to the right, the cutting blade 24 is tilted along the ridge slope Y as shown by the imaginary line in FIG. In this state, the engine 5 is driven and the accelerator lever 33 is pulled, or if the engine 5 is being driven, the accelerator lever 33 is pulled to rotate the cutting blade 24. However, when the accelerator lever 33 is pulled and the handle 3 is held and the traveling machine body 1 is pushed along the edge of the ridge top surface X along the ridge slope Y, the cutting surface becomes inclined as shown by the imaginary line in FIG. Grass can be mowed on the ridge surface Y by the cutting blade 24 rotating in an inclined state.

At this time, the angle of inclination for changing the direction of the cutting blade 24 is determined by lever 2.
7, the inclination angle of the cutting blade 24 can be determined by adjusting the inclination angle of the lever 27 in accordance with the inclination of the ridge surface Y.

Therefore, when mowing the ridge slope surface Z on the opposite side of the ridge top surface X, it is sufficient to change the direction of the traveling machine body 1 and reverse the direction of movement, but the swing of the arm 11 is different from the previous one. Reverse left side and lever 27
If you tilt it to the left side opposite to the previous direction, the cutting blade 24 will be tilted in the opposite direction to the previous direction, so even if you do not reverse the direction of movement and move in the same direction, you will not be able to mow the grass on the slope surface Z of the ridge on the opposite side. I can do it.

Another embodiment of the invention will be described with reference to FIG. Since this embodiment has the same basic configuration as the previous embodiment, only the main points will be explained. That is, in this embodiment, a flexible shaft transmission method using a flexible shaft 39 is used to transmit power from the drive shaft 8 to the rotating shaft 22. Therefore, there is an advantage that a complicated gear group is not required and the structure is simple. Further, in this embodiment, a self-propelled system is adopted in which the tire 2 is driven by a worm 40 provided on the drive shaft 8 via worm teeth 41, a tuning band 42, and a pulley 43. This has the advantage that there is no need to push the handle 3, making work easier.

In the above two embodiments, it is of course possible to make the first embodiment a self-propelled type and the second embodiment a hand-propelled type, and it is also possible to change the configuration of each embodiment as appropriate. .

As described above, according to the present invention, all-mechanical mowing of ridge grass is possible by running a traveling machine body having a cutting blade whose cutting surface is in a horizontal or inclined state on the ridge surface. This makes it much easier to mow the grass in rows, which requires repeated cutting over a long distance, and in particular, since the mowing blade in the slanted condition completely follows the slope due to its parallel rods, it can be mowed under the same conditions as in the horizontal condition. The effect is that a reaping effect can be obtained.

[Brief explanation of drawings]

1 to 5 show an embodiment of the device of the present invention, in which FIG. 1 is a partially cutaway side view, and FIG. 2 is a cross-sectional plan view taken along line - in FIG. (excluding cover 38), FIG. 3 is a rear view, FIG. 4 is a sectional view of a main part showing the rotation transmission mechanism of the cutting blade 24, and FIG. 5 is a front view of FIG. 4. FIG. 6 is a partially cutaway side view showing another embodiment of the device of the present invention. In the figure, 1 is the traveling aircraft, 2 is the tires, 3 is the hand handle, 5 is the engine, 6 is the outer casing of the centrifugal clutch, 8 is the drive shaft, 11 is the arm, 12 is the lever,
21 is a head pipe, 22 is a rotating shaft, 24 is a cutting blade, 2
7 is a lever, 31 is a parallel rod, 33 is an accelerator lever, 39 is a flexible shaft, 40 is a worm, X is a ridge top surface, and Y and Z are ridge slope surfaces.
Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] 1 A traveling aircraft on which an engine, etc. is mounted, an arm whose proximal end is rotatably and fixedly attached to the traveling aircraft, and whose tip can swing back and forth on a horizontal arc; a vertical pipe to which the engine is mounted; a head pipe which is rotatably mounted to the lower end of the vertical pipe so that the lower part of the vertical pipe can swing in the left-right direction; a rotating shaft of the cutting blade driven by the cutting blade; a head pipe rotation mechanism that rotates the horizontal pipe portion of the head pipe to tilt the cutting blade from a horizontal state to the right or left; and a head pipe rotation mechanism having a length substantially equal to the arm. and a parallel rod having a proximal end horizontally rotatably attached to the traveling body, a distal end side horizontally rotatably attached to the vertical tube, and disposed parallel to the arm. A ridge mowing device.