JPH10304727A - Walking type mower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a walking type mower for stably traveling straight even on a footpath without entangling cut-down weeds and improving cutting workability by providing plural planar projections on a peripheral surface at the center part of a traveling wheel by appropriately tilting the plate surface to a peripheral direction. SOLUTION: One traveling wheel 5 of a wide left-to-right horizontal width is provided on the rear part of a cutting blade, the left-to-right center part 15 of the traveling wheel 5 is turned to a diameter smaller than both side parts 13 and 14 and the plural planar projections 16 are provided on the peripheral surface of the center part 15 by appropriately tilting the plate surface to the peripheral direction. Also, it is preferable to attach a rubber lug 36 for which recessed and projected parts are formed on the peripheral surface to the outer side end of both side parts 13 and 14 and to attach a U-shaped iron lug 37 to the outer peripheral surface of both side parts 13 and 14.

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 weeds growing on ridges and agricultural roads.

[0002]

2. Description of the Related Art As a walking type mowing machine, a cutting blade that rotates horizontally along the ground is provided at a front side of a machine frame, and one or two left and right running wheels are provided at a rear side of the machine frame. There is a configuration in which a handle rod is erected obliquely rearward from an operator, and an operator cuts a weed with a cutting blade while walking with the rear end of the handle rod.

[0003]

When a walk-type mower mows grass on a ridge, if the center of the ridge is raised, it is easy to turn left and right in the case of a single running wheel, and in the case of two wheels. In the, the bottom of the fuselage touches the ground and the direction of the fuselage changes. In addition, there is also a problem that the running wheel is slippery because the running wheel runs while stepping on the cut grass. An object of the present invention is to provide a walking-type mower that can stably travel straight even on such a ridge road and easily perform a mowing operation.

According to the present invention, in a walking type mowing machine in which one running wheel 5 having a wide left and right width is provided at a rear portion of the cutting blades 3 and 4, the left and right center of the running wheel 5 is larger in diameter than both sides 13 and 14. The small-diameter portion 15 is formed, and a plurality of plate-like projections 16 are provided on the peripheral surface of the small-diameter portion 15 with the plate surfaces appropriately inclined with respect to the circumferential direction.

[0005]

According to the above construction, the running wheels 5 are wide to the left and right, so that the running wheels 5 are reliably driven even when there is unevenness on the ground, and the center portions 15 of the running wheels 5 are grounded. Also, the driving force is transmitted by the plate-like projections 16 having the plate surface inclined with respect to the circumferential direction, and the driving force is transmitted. Since the projections 16 are plate-like, the cut grass is not entangled.

[0006]

Next, embodiments of the present invention will be described with reference to the drawings. The engine 22 is attached to the rear part of the gear case 9 provided in the center of the body, and arms 25 and 26 are provided downward from the tips of the support cylinders 23 and 24 extending left and right from the gear case 9, and the lower ends of the arms 25 and 26 are provided. The traveling wheel 5 is pivotally supported. One of the arms 25 is provided with a chain transmission mechanism therein, and transmits power from the output shaft of the gear case 9 to the input shaft of the traveling wheel 5 to drive the traveling wheel 5 to travel.

A machine frame cover 27 that covers the upper part of the traveling wheel 5 is attached to the lower side of the support cylinders 23 and 24. A mounting frame 28 is attached to the front of the lower side of the gear case 9, and a transmission case 29 that supports the rotating shafts 1 and 2 on the left and right, and a cutout attached to the rotating shafts 1 and 2 are provided below the mounting frame 28. Blades 3, 4
And a power transmission cover 30 that covers a power transmission mechanism 10 that transmits power from the gear case 9 to the power transmission case 29.

The transmission case 29 supports the two rotating shafts 1 and 2 downward and horizontally in a divided state. Pulleys 31 and 32 are fixed to the upper projecting sides of the rotating shafts 1 and 2, and a gear case 29 is provided. The belt 34 is attached to the pulley 33 fixed to the output shaft 9.
To form the transmission mechanism 10. Rotation axis 1,
2, the plate-like cutting blades 3 and 4 are attached to each other with a phase shift of 90 ° up and down. The rotating shafts 1 and 2 rotate in opposite directions so that the left and right cutting blades 3 and 4 rotate toward the center on the front side when viewed from above.

The cutting blade cover 8 has outer surfaces 6, 6 narrowed from the outside of the rotation locus of the cutting blades 3, 4 toward both ends of the traveling wheel 5.
And the upper side surface 7 extending from the upper surfaces of the cutting blades 3 and 4 to the machine frame cover 27 are integrally formed. The front portion of the cutting blade cover 8 rises obliquely forward and upward, and its front end 11 is The left and right centers are concave toward the rear, and a guide rod 35 is attached along the front end. 51 is a cover for covering the gear case 9.

As shown in FIG. 5, the left and right sides 13 and 14 of the traveling wheel 5 have a large diameter and the middle portion 15 has a small diameter. It is easy to pass. Rubber lugs 36 having irregularities on the peripheral surface are attached to the outer ends of both sides 13.14.
A U-shaped iron lug 37 is attached to the outer peripheral surface of. The protrusion height of the iron lug 37 is lower than the protrusion height of the rubber lug 36. On the lower side of the machine frame cover 27,
A scraper 38 is provided corresponding to the iron lug 37 to remove grass wound around the iron lug 37.

A plate-like projection 16 protruding in a triangular shape when viewed from the side is provided on the peripheral surface of the intermediate portion 15 so that the plate surface is approximately one in the circumferential direction.
Attach 5 °. The inclination of the plate-like projection 16 is to apply a driving force to the traveling wheel 5 and to prevent the grass from getting entangled, and may be about 10 ° to 45 ° with respect to the circumferential direction. Further, the protruding height of the plate-like projection 16 is smaller than the diameter of both side portions 13 and 14.
A mounting base 39 is mounted on the upper part of the gear case 9, and a handle base 40 is mounted on the mounting base 39 so as to be horizontally rotatable. Reference numeral 41 denotes a fixture for fixing the horizontal rotation position of the handle base 40 with respect to the mounting table 39, so that the handle base 40 can be fixed at respective rotation positions of 20 °, 25 °, 70 °, and 90 ° from the right behind position.

A support shaft 17 is erected on the handle base 40, and a bracket 50 is provided on the support shaft 17 in a rearward direction.
The base of the handle rod 18 is pivotally supported by the bracket 50 so as to be vertically rotatable about a horizontal axis 42. A locking pin 44 is provided in a recess of a locking piece 43 fixed to the lower end of the handlebar 18.
Engages with each other to change the angle of inclination of the handle rod 18. A handle 19 protrudes from the support shaft 17 in a direction opposite to the bracket 41, and an opening 21 is formed in a cover 20 that covers the support shaft 17. 19 so that the aircraft can be lifted.

A handle 45 in the form of a loop is attached to the tip of the handle rod 18, an accelerator lever 46 connected to the engine 22 is attached to the handle 45, and an up-down rotation fixture for the handle rod 18 is attached to a mounting portion with the handle rod 18. An upper and lower fixing lever 47 connected to a wire 44 and a horizontal fixing lever 48 connected to the horizontal fixture 41 by a wire are attached. Since the handle 45 is fastened to the handle rod 18 by fastening with the fastener 49, the fastener 49 can be loosened to change the mounting angle of the handle 45. In the case of using the mowing machine configured as described above, the upper and lower fixing levers 47 are operated so that the handle 45 has a height that can be easily held by the operator, and the grass is cut while moving forward. The cut grass is gathered at the left and right centers by the rotation of the cutting blades 3 and 4 and passes below the central portion 15 of the traveling wheel 5 and is discharged backward.

When the worker walks on the upper surface of the ridge and cuts the grass on the inclined surface of the ridge, the horizontal fixing lever 48 is operated to turn the handlebar 18 to the side of the body, and the operator walks the handle while walking on the ridgeway. With the rod 18, the aircraft is operated so as to travel laterally on the inclined surface.

[Brief description of the drawings]

FIG. 1 is an overall plan view of an embodiment of the present invention.

FIG. 2 is an overall side view of the embodiment of the present invention.

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

FIG. 4 is a partially enlarged front view of the embodiment of the present invention.

FIG. 5 is a partially enlarged plan view of the embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 3 cutting blade 4 cutting blade 5 running wheel 13 both sides 14 both sides 15 central part 16 plate-shaped projection

Claims (1)

[Claims] 1. A walk-behind mowing machine comprising a single running wheel (5) having a large lateral width at the rear of the cutting blades (3) and (4). ) Are made smaller in diameter than both sides (13) and (14), and a plurality of plate-like projections (16) are provided on the peripheral surface of the central portion (15) with the plate surface appropriately inclined with respect to the circumferential direction. A walk-behind mower characterized by that.