JP3358704B2 - 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 handle bar is provided upright from a machine frame provided with a horizontally rotating cutting blade on the front side of a running wheel composed of one wheel or two right and left wheels. There is a configuration in which the grass is cut while traveling forward with the handle.

[0003]

This type of mowing machine is often used on terrain where the center is raised such as a ridge, and it is difficult to run straight on such terrain.
In addition, it is slippery and unstable because it runs on cut grass. An object of the present invention is to provide a mower capable of running stably and straight even on such terrain.

[0004]

Means for Solving the Problems Cutting blades 3 and 4 are mounted on rotating shafts 1 and 2 which are vertically arranged side by side on the front side and left and right so that the front sides are reversely rotated toward the center. A cutting blade cover 5 for driving and covering the cutting blades 3 and 4 is provided , and behind the cutting blades 3 and 4, a wide running wheel 10 having both ends located outside the left and right rotary shafts 1 and 2 is disposed. The inner ends of the right and left sides 10a, 10a of the running wheel 10 are
2, large-diameter portions 10a, 10a having lugs 13 around the inner side of the large-diameter portions 2a.
Between 0a, a walking-type mower is constituted by a small-diameter portion 10b through which grass cut by the left and right cutting blades 3, 4 can pass.

[0005]

The running wheel 10 of the present invention has a lug 1
The large large diameter portions 10a, 10a having the three wheels engage with the ground, so that traveling is stable, and grass cut down under the small diameter portion 10b at the center in the left and right passes, so that the traveling wheel 10 rises. It runs stably without any trouble. Also, running wheels 10
Since the small-diameter portion 10b is formed, the ridge or the like where the center rises can be run in a stable ground contact state. A narrow rubber lug 12 is formed on both left and right sides of the traveling wheel 10, and an iron lug 1 lower than the rubber lug 12 is formed inside the rubber lug 12.
By forming 3, the rubber lugs 12 at the left and right end portions can contact the ground when running on the road and run quietly. In addition, if the traveling wheel 10 is divided into two right and left parts and the two divided wheels 10a and 10a rotate relatively freely at an appropriate angle, even if the traveling wheel 10 is wide to the left and right, one of the left and right sides is pushed forward when turning. By doing so, the running direction can be easily changed. Further, if the scraper 15 is provided on the frame 30 covering the traveling wheel 10 in accordance with the turning position of the iron lug 13, the iron lug 13
The scraps 15 remove the grass pieces and dirt and the like that are wrapped around the scraper every rotation, so that the running can be stabilized.

[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.
The cutting blades 3 and 4 are attached to the left and right rotating shafts 1 and 2, respectively, so that the front sides of the left and right cutting blades 3 and 4 are reversely rotated toward the center when viewed from above. Running wheel 1
On the upper side of 0, a traveling wheel cover 30 is attached to the lower side of the gear case 20, and a cutting blade cover 5 that covers the entire cutting blades 3 and 4 is provided on the front side of the traveling wheel cover 30. 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 FIGS. 2 and 4, etc., the running wheel 10 is located behind the cutting blades 3 and 4, and has both ends located outside the left and right rotary shafts 1 and 2, and is formed wide. Along with
Wide-diameter large-diameter portions 10a, 10a having lugs 3 around the inner ends of the left and right side portions of the traveling wheel 10 on the left and right sides of the rotation shafts 1 and 2 on the same side, and the left and right large-diameter portions. 10a, 10
and a small-diameter portion 10b through which grass cut by the left and right cutting blades 3 and 4 can pass. The large diameter portion 10
Iron lugs 13, 13 are provided at appropriate intervals around the outer periphery of the small diameter portions 10b and a, 10a, and narrow rubber lugs 12 are wound around the outer ends of the large diameter portions 10a, 10a. Under the running wheel cover 30, the iron lug 13 of the running wheel 10 is provided.
A scraper 15 is provided in response to the above to remove grass wound around the iron lug 13. Further, the left side portion 10a and the right side portion 10a may be attached so as to rotate freely at a fixed angle of, for example, about 90 °, so that the left and right turns can be easily performed.

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 small diameter portion 10 b 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 °.

[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]

 3 Cutting Blade 4 Cutting Blade 10 Running Wheel 10a Split Wheel (Large Diameter) 10b Small Diameter 12 Rubber Lug 13 Iron Lug 15 Scraper 30 Frame

Continuation of the front page (56) References JP-A-58-129907 (JP, A) JP-A-48-52532 (JP, A) JP-A-6-133622 (JP, A) JP-A-59-140809 (JP) , A) Japanese Utility Model Showa 59-21836 (JP, U) Japanese Utility Model Showa 51-40969 (JP, U) Japanese Utility Model Showa 2-100418 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB A01D 34/63-34/90

Claims (4)

(57) [Claims] 1. Cutting blades (3) and (4) are mounted on rotating shafts (1) and (2) which are vertically arranged side by side on the left and right sides of the front side. The blade blade is driven to rotate in the reverse direction toward the center, and the blade blade covers the blades (3) and (4).
A bar (5) is provided , and a wide running wheel (10) having both ends located outside the left and right rotating shafts (1) and (2) is disposed behind the cutting blades (3) and (4). The inner ends of the left and right side portions (10a) and (10a) of the traveling wheel (10) are located more inward than the rotation shafts (1) and (2) on the same side.
3) The large-diameter portions (10a) and (10a) having wide widths, and the grass cut between the left and right large-diameter portions (10a) and (10a) by the left and right cutting blades (3) and (4). Is a small-diameter portion (10b) that can pass through. 2. A left and right large diameter portion (10a) of a traveling wheel (10),
(10b) The rubber lug (12) having a narrow width at an outer end thereof, and an iron lug (13) lower than the rubber lug (12) is formed inside the rubber lug (12). Walking type mower. 3. The walking device according to claim 1, wherein the running wheel (10) is divided into two parts, left and right, so that the two divided wheels (10a), (10a) rotate relatively freely at an appropriate angle. Type mower. 4. The walking according to claim 2, wherein a scraper (15) is provided on the frame (30) covering the running wheel (10) in correspondence with the turning position of the iron lug (13). Type mower.