JP3358703B2 - Walking mower - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a walking type mowing machine for cutting relatively short grasses growing on ridges and agricultural roads.

[0002]

2. Description of the Related Art As a walking type mowing machine, a handlebar is erected from a machine frame provided with a rotary blade which rotates horizontally on the front side of a traveling wheel toward a diagonally rearward and upward direction, and an operator moves a rear side of the machine frame. There is a configuration in which grass is cut by holding a handle of a handlebar while walking.

[0003]

The above conventional mower is
A cutting blade cover is provided to cover the rotary blade from above to prevent danger. For this reason, long grass is hard to be cut by being pushed down at the front end of the cutting blade cover, and because the cut grass is long, the grass is wrapped around the rotating shaft on which the rotating blade is attached, or is difficult to be discharged from the cutting blade cover. Work efficiency is not improved. In view of the above, an object of the present invention is to make it easier for grass to enter the cutting blade cover, and to cut the grass so that it is difficult to wind around the rotating shaft so that the grass can be efficiently discharged from the cutting blade cover. It was configured as follows.

[0004]

Means for Solving the Problems Cuttings projecting in the diametrical direction of the rotating shafts 1, 2 on the left and right rotating shafts 1, 2 perpendicular to the ground in two stages, upper and lower, at a height corresponding to the root of the grass and an intermediate portion. the blades 3,4 mounted, together with the rotating shaft 2 of the left and right forms for rotation toward the opposite direction at the front side, the front end of the iso covering both sides and an upper surface of the cutting blade 3, 4 of the upper and lower stages The upper blade
The mowing machine is provided with a cutting blade cover 5 that is positioned higher than the blade.

[0005]

Since the cutting blades 3 and 4 are mounted on the upper and lower sides of the left and right rotating shafts 1 and 2 perpendicular to the ground, the height of the cutting blade cover 5 from the ground is inevitably increased . Cutting blade
Position the front end of the cover 5 higher than the upper blade.
Ri, grass tends enters the cutting blade cover 5, since the grass is cut short at two positions of the root and the intermediate portion, not easily wound around the rotary shaft 1, also discharged from the cutting blade cover within 5 easily . Furthermore, the rotating shafts 1, 2 provided with cutting blades 3, 4 projecting in the diametrical direction in the upper and lower two stages are provided on the left and right, and both the rotating shafts 1, 2 are configured to rotate in the facing direction on the front side. Therefore, the resistance when mowing the grass is balanced to the left and right, so that the vehicle can easily travel straight ahead, and the width of the left and right mowings is widened.

[0006]

Next, embodiments of the present invention will be described with reference to the drawings. An engine 21 is attached to a rear part of a gear case 20 provided at the center of the body, and arms 25 and 26 are provided downward from tips of support cylinders 22 and 23 extending left and right from the gear case 20, and lower ends of the arms 25 and 26 are provided. The traveling wheel 10 is supported at the portion. One of the arms 25 is provided with a chain transmission mechanism therein so that the traveling wheels 10 are rotationally driven by the power of the engine 21.

On the front side of the gear case 20, a transmission case 2 having rotating shafts 1 and 2, which are vertically divided and distributed to the left and right.
9 and the left and right rotating shafts 1 and 2
The cutting blades 3 and 4 projecting in the diametrical direction 2 are attached to each other, so that the front sides of the left and right cutting blades 3 and 4 rotate backward toward the center when viewed from above. On the upper side of the traveling wheel 10, a traveling wheel cover 30 is attached to the lower side of the gear case 20, and on both sides of the cutting blades 3 , 4
And a cutting blade cover 5 that covers the entire upper surface . The front end of the cutting blade cover 5 has a shape in which the left and right centers are recessed rearward, and a guide rod 6 is attached along the front end shape. As shown in FIG. 6, the cutting blade cover 5 is attached to the front part 7 with a hinge 8 and turns upward when grass hits the guide rod 6, so that the cutting blades 3 and 4 are exposed. The mowing run becomes smoother. 45 is the front part of the cover 7
Is a spring that is resiliently held in a horizontal direction.

As shown in FIG. 2, the running wheel 10 has a large diameter at both left and right side portions 10a and a small diameter at the intermediate portion 10b so that the cut grass can easily pass under the intermediate portion 10b. An iron lug 13 is provided between the side portions 10a and the intermediate portion 10b at appropriate intervals.
The rubber lugs 1 are provided on the outer ends of both side portions 10a.
2 is wound. Under the traveling wheel cover 30, a scraper 15 corresponding to the iron lug 13 of the traveling wheel 10 is provided.
Is provided to remove grass wound around the iron lug 13. Although the left and right side portions 10a of the traveling wheel 10 are large-diameter tubes and the intermediate portion 10b is small-diameter tubes, the running wheels 10 may have a drum shape in which the diameter is gradually reduced from both left and right ends toward the center. Further, the left side portion 10a and the right side portion 10a are formed at a fixed angle, for example, 9
It may be mounted so that they can rotate freely about 0 ° so that they can easily turn left and right.

A mounting base 31 is mounted on the upper part of the gear case 20, and a handle base 32 is mounted on the mounting base 31 so as to be horizontally rotatable. Reference numeral 33 denotes a fixture for fixing the horizontal rotation position of the handle base 32 with respect to the mounting base 31. On the upper part of the handle base 32, a handle rod 34 is pivotally supported by the horizontal axis 18, and the inclination of the handle rod 34 with respect to the handle base 32 is fixed by a fixture 35. It can also be fixed.

A handle 36 in the form of a loop is attached to the tip of the handle rod 34, and an accelerator lever 37 connected to the engine 21 is attached to the handle 36. An upper and lower fixing lever 38 connected thereto and a horizontal fixing lever 39 connected to the horizontal fixing tool 33 by a wire are provided. In the case of using the mowing machine configured as described above, the vertical fixing lever 3
8 is operated so that the handle 36 is at a height that can be easily held by the operator, and the grass is cut down while traveling forward. The cut grass is gathered at the center in the left and right directions by the rotation of the cutting blades 3 and 4, passes below the central portion 10b of the traveling wheel 10, and is discharged backward. When changing the front-back direction on a narrow ridge, the handlebar 34 is fixed substantially vertically and the body is rotated by 180 °. Further, when a guide rod 6 whose left and right center is depressed rearward is provided on the front side of the cutting blade cover 5, the grass is pushed down by the guide rod 6 during cutting and traveling, so that the grass is slippery and easily enters the cutting blade cover 5. . Further, the front portion 7 of the cutting blade cover 5 is attached by a hinge 8 so as to be rotatable upward, and the front portion 7 of the cutting blade cover 5 is always kept horizontal, and is rotated upward by the contact of grass to cut the grass. If the blades 3 and 4 are exposed, the cutting blades 3 and 4 are safe without exposure when the cutting operation is not performed, and the cutting blade cover front part 7 does not interfere when cutting grass. Since the cutting blades 3 and 4 directly cut the upright grass, running resistance is reduced and work efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a partial front sectional view of an embodiment of the present invention.

FIG. 2 is a partially enlarged plan view of the embodiment of the present invention.

FIG. 3 is a partially enlarged side sectional view of the embodiment of the present invention.

FIG. 4 is an overall plan view of the embodiment of the present invention.

FIG. 5 is an overall side view of the embodiment of the present invention.

FIG. 6 is a partial perspective view of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotation axis 2 Rotation axis 3 Cutting blade 4 Cutting blade 5 Cutting blade cover 6 Guide rod 7 Front of cutting blade cover 8 Hinge

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-58-129907 (JP, A) JP-A-48-52532 (JP, A) JP-A-4-148613 (JP, A) JP-A-57-129 163408 (JP, A) Fully open 1979-21836 (JP, U) Fully open, 51-40969 (JP, U) Fully open, 51-106763 (JP, U) Fully open, 56-81625 (JP, U) Actually Open Hei 5-7030 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01D 34/63-34/90

Claims (1)

(57) [Claims] 1. Left and right rotation axes (1) perpendicular to the ground,
(2) a cutting blade (3), which projects in the diametrical direction of the rotating shafts (1) and (2) in two stages up and down at a height corresponding to the root of the grass and an intermediate portion;
(4) is mounted so that these left and right rotation shafts (1) and (2) rotate in the opposite direction on the front side.
Upper and lower stages of the cutting blade (3), covering the sides and top of the (4) iso
A walking type mowing machine comprising a cutting blade cover (5) for positioning the front end of the cutting blade higher than the upper cutting blade .