JP3847093B2 - Walking mower - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a walking type mower that cuts relatively short grass growing on a fence or a farm road.
[0002]
[Prior art]
As a walk-type mower, a handle rod is erected from the machine frame provided with a rotating blade that rotates horizontally on the front side of the running wheel, obliquely upward and rearward. There is a configuration that cuts grass with a handle.
[0003]
[Problems to be solved by the invention]
In the conventional mower, a cutting blade cover is provided so as to cover the rotary blade from above in order to prevent danger. For this reason, long grass is pushed down at the front edge of the cutting blade cover and is not easily cut, and because the cut grass is long, it can be wrapped around the rotating shaft with the rotary blade attached or it can be difficult to be discharged from the cutting blade cover. Work efficiency does not increase.
Therefore, in the present invention, it is an object to make the grass easy to enter the cutting blade cover, cut it short, make it difficult to wind the rotating shaft, and efficiently discharge the grass from the cutting blade cover. It was configured as follows.
[0004]
[Means for Solving the Problems]
A cutting blade 3 having a rectangular shape in a plan view that protrudes in the diameter direction of the rotary shafts 1 and 2 on the left and right rotary shafts 1 and 2 perpendicular to the ground, and in two upper and lower levels corresponding to the grass stock and the intermediate portion. , 4 and the left and right rotary shafts 1, 2 to which the cutting blades 3, 4 are mounted are to rotate in the opposite direction on the front side, and on both sides and above the upper and lower cutting blades 3, 4 central to the structure and the walking mower comprising constituting a recessed rearward continuously front of該刈blade cover 5 to provide a cutting blade cover 5 that covers the entire surface of the left and right end side.
[0005]
[Action and effect of the invention]
Since the cutting blades 3 and 4 are attached to the top and bottom of the rotary shafts 1 and 2 perpendicular to the ground, the height of the cutting blade cover 5 from the ground is inevitably high, and the grass easily enters the cutting blade cover 5. Since the grass is cut short at the root and the middle portion, it is difficult to wind the rotary shafts 1 and 2 and the grass blade cover 5 is easily discharged.
In addition, the rotary shafts 1 and 2 provided with the cutting blades 3 and 4 are arranged on the left and right, and the rotary shafts 1 and 2 rotate in the opposite direction on the front side, so that the resistance when mowing grass is balanced on the left and right. As a result, it becomes easier to travel straight and the left and right trimming widths are widened.
Further, Yes constitutes the recessed center rearward of the front end of the cutting blade cover 5 for covering the sides and upper entire surface continuously from left and right end side of the cutting blade 3, 4 of the upper and lower stages, Reaper As the vehicle travels, the front edge of the cutting blade cover 5 guides the grass on both the left and right sides so as to push it down toward the center, and the left and right cutting blades 3 and 4 that rotate backward toward the center and the front end of the cutting blade cover 5 The distance is shortened in the central portion, and coupled with the scavenging action of the cutting blades 3 and 4 having a rectangular shape in plan view protruding in the diameter direction of the rotary shafts 1 and 2, the grass can easily enter the cutting blade cover 5 and surely. Can be cut.
Further, by providing the guide lever 6 recessed central rearward continuously from the left and right end side in front of the cutting blade cover 5, it is possible to further improve the guiding action of increasing strength and grass.
[0006]
【Example】
Next, embodiments of the present invention will be described with reference to the drawings.
An engine 21 is attached to the rear portion of the gear case 20 provided in the center of the airframe, and arms 25 and 26 are provided downward from the front ends of the support cylinders 22 and 23 extending from the gear case 20 to the left and right, and lower ends of the arms 25 and 26. The traveling wheel 10 is pivotally supported on the part. One arm 25 is provided with a chain transmission mechanism inside so that the traveling wheels 10 are driven to rotate by the power of the engine 21.
[0007]
On the front side of the gear case 20, there is provided a transmission case 29 having rotating shafts 1 and 2 that are vertically distributed and pivotally supported. The left and right rotating shafts 1 and 2 have two upper and lower steps corresponding to the height of the grass and the middle portion. Further, the cutting blades 3 and 4 projecting in the diameter direction of the rotary shafts 1 and 2 are attached, respectively, so that the front sides of the left and right cutting blades 3 and 4 are reversely rotated toward the center as 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 a cutting blade cover 5 that covers the 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 is not central in succession from left and right end side and recessed rearward, with the cutting travel guides Slide to push down toward the grass on the left and right sides to the center, In addition, the interval between the left and right cutting blades 3 and 4 that rotate backward toward the center and the front end of the cutting blade cover 5 is short at the center, and the rectangular cutting blades 3 that protrude in the diameter direction of the rotary shafts 1 and 2 are formed. Combined with the scraping action of 4, the grass can easily enter the cutting blade cover 5 and can be cut reliably. A guide rod 6 is attached along this front end shape.
As shown in FIG. 6, the cutting blade cover 5 is attached to the front portion 7 with a hinge 8, and when the grass hits the guide rod 6, the cutting blade cover 5 is rotated upward to expose the cutting blades 3 and 4. Mowing is smoother. Reference numeral 45 denotes a spring that is elastically held to hold the cover front portion 7 in the horizontal direction.
[0008]
As shown in FIG. 2, the traveling wheel 10 has a left and right side portion 10a having a large diameter and a middle portion 10b having a small diameter so that the cut grass can easily pass below the middle portion 10b. Iron lugs 13 project from the side portions 10a and the intermediate portion 10b at appropriate intervals, and rubber lugs 12 are wound around the outer ends of the side portions 10a. A scraper 15 is provided on the lower side of the traveling wheel cover 30 corresponding to the iron lug 13 of the traveling wheel 10 to remove grass wrapped around the iron lug 13.
The left and right side portions 10a of the traveling wheel 10 are large-diameter cylinders, and the intermediate portion 10b is a small-diameter cylinder. However, the running wheels 10 may have a drum shape that gradually decreases in diameter from the left and right ends toward the center.
Alternatively, the left side portion 10a and the right side portion 10a may be attached so as to rotate with each other at a predetermined angle, for example, about 90 ° so as to facilitate left and right turning.
[0009]
A mounting base 31 is attached to 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 bar 34 is pivotally supported by the horizontal axis 18, and the tilt of the handle bar 34 with respect to the handle base 32 is fixed by a fixture 35 so that the handle bar 34 is substantially vertical. Can be fixed.
[0010]
A loop handle 36 is attached to the tip of the handle rod 34, an accelerator lever 37 connected to the engine 21 is attached to the handle 36, and the handle rod 34 is connected to a vertical rotation fixture 35 of the handle rod 34 with wires. A fixing lever 38 and a horizontal fixing lever 39 connected to the horizontal fixing tool 33 with a wire are provided.
When using the mower configured in this way, the upper and lower fixing lever 38 is operated so that the handle 36 has a height that the operator can easily hold, and the grass is cut forward while traveling forward. The grass that has been cut down gathers at the center of the left and right by the rotation of the cutting blades 3 and 4 and passes below the center portion 10b of the traveling wheel 10 and is discharged backward.
When changing the front / rear direction on a narrow ridge, the handle ridge 34 is fixed substantially vertically and the body is rotated 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 an embodiment of the present invention.
FIG. 3 is a partially enlarged side sectional view of an embodiment of the present invention.
FIG. 4 is an overall plan view of an embodiment of the present invention.
FIG. 5 is an overall side view of an embodiment of the present invention.
FIG. 6 is a partial perspective view of another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rotating shaft 2 Rotating shaft 3 Cutting blade 4 Cutting blade 5 Cutting blade cover 6 Guide rod 7 Cutting blade cover front 8 Hinge

Claims (2)

The left and right rotating shafts (1) and (2) perpendicular to the ground protrude in the diameter direction of the rotating shafts (1) and (2) in two steps, the height corresponding to the plant stock and the middle part. The cutting blades (3) and (4) having a rectangular shape in plan view are mounted, and the left and right rotating shafts (1) and (2) mounted with the cutting blades (3) and (4) are directed in the opposite direction on the front side. together form for rotation, the cutting blade of the upper and lower stages (3), (4) on both sides and the front end of the left and right end side of the cutting blade cover the entire surface above the cover (5)該刈blade cover provided (5) of A walk-type mower with a central shape that is continuously recessed from the back. Cutting blade cover (5) walking mower of claim 1, the center continuously from left and right end side to the front side is provided with a guide lever (6) which is recessed toward the rear of.

Images