JP3111179B2 - 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 slope for cutting grass grown on an inclined surface connected to one end of a road surface at one end of a road cutting device for cutting grass grown on a road surface. Field of the Invention The present invention relates to a mower in which a mowing device is connected in a vertically swingable manner.

[0002]

2. Description of the Related Art Conventionally, as a mowing machine for two-side mowing as described above, the front upper end of a side mowing device equipped with two rotating blades is swung back and forth with respect to one side end of a road surface mowing device. In addition to being movably connected, the rear upper end of the slope cutting device is connected to one side of the traveling body via a turnbuckle-type length adjustment mechanism, and the slope adjustment is operated by operating the length adjustment mechanism. Changing the separation distance between the rear upper end of the device and one side of the traveling body, and swinging (changing the posture) the sloping reaper back and forth about the connection fulcrum with one side end of the road reaping device. In some cases, the cutting width of the slope cutting device is changed.

[0003]

In the above prior art, the method
Centering on a fulcrum set near the upper end of the entire surface mowing device
It has adopted a configuration that swings back and forth, so this
Adjustment moves the upper rotating blade of the slope mower up and down.
Move. Specifically, the upper rotating blade of the slope reaper
The axis position changes up and down by drawing an arc trajectory centered on the fulcrum.
And swing forward to increase the cutting width.
The blade moves downward, and moves backward to reduce the cutting width.
When swung, the rotary blade moves upward. Therefore, slope cutting
When the cutting width is maximized, the upper cutting blade
To reduce the slope width of the slope.
In order to swing the entire slope mowing device back
The upper part of the slope mowing device swings upward and
Protruding upward from the edge and along the slope direction
The slope reaper that protrudes upward approaches the traveling aircraft side
I will do it. Therefore, in the above configuration, the slope reaping device is large.
It is difficult to swing backwards
The cutting width can be adjusted to some extent.
Further, in the above conventional two-side mowing mower, since the attitude of the entire slope mower is changed in the vertical direction and the front-rear direction to change the slope trimming width, the slope Although the flexible rotary shaft is used to transmit power to the reaper, it is difficult to transmit a large torque at a high speed by the flexible rotary shaft, and there is a problem in durability against a high load of slope cutting.

SUMMARY OF THE INVENTION It is an object of the present invention to provide one side end of a road mowing device.
Rotary slope reaping device with multiple rotating blades
In a continuous two-way mowing machine,
An object of the present invention is to make it possible to largely change and adjust the cutting width, and to make it possible to satisfactorily perform slope cutting by rationally transmitting power.

[0005]

According to the first aspect of the present invention,
A slope cutting device for cutting grass grown on an inclined surface connected to one side end of the running road surface is provided at one end of a road cutting device for cutting grass grown on a running road surface so as to be vertically swingable. A lawn mowing device comprising: a slope cutting device; a first slope cutting portion adjacent to the road cutting device; and a rocking displaceable in a front-rear direction with respect to the first slope cutting portion. And the second slope cutting unit configured to transmit the engine power to the road surface cutting device, and then to the slope cutting device, and from the first slope cutting unit to the second slope cutting device. The power transmission to the two-slope reaping section is performed by a chain-type or belt-type interlocking mechanism provided over the upper part of the housing.

[0006] According to the above construction, the road surface reaping device and the first slope reaping portion of the slope reaping device only swing up and down relative to each other. Power transmission can be provided by any high transmission means. Considering the power transmission between the first slope reaping unit and the first slope reaping unit of the slope reaping device, the power transmission from the first slope reaping unit to the second slope reaping unit is considered. When the transmission is performed by shaft transmission, a large number of heavy parts such as a horizontally long shaft, bevel gears for changing the direction of rotation provided at both ends thereof, and a gear case for supporting them are required. here,
When the power transmission from the first slope cutting unit to the second slope cutting unit is performed by a chain-type or belt-type interlocking mechanism, the above-described heavy parts can be reduced, and the road-side cutting device is moved laterally outward from the road surface cutting device. The extended slope reaper can be made as light as possible,
The grounding load of the wheel provided in the first slope mowing part is reduced, and the running resistance on this wheel is reduced. As a result, the running resistance is less likely to deflect the running body by the slope cutting device.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an overall side view of a two-side mowing machine.
FIG. 2 shows a schematic plan view of a two-side mowing mower. The mowing machine includes a walking-type traveling machine 1;
A road surface cutting device 2 for cutting grass grown on the running road surface,
A slope cutting device 3 for cutting grass growing on an inclined surface connected to one side end of the traveling road surface.

The traveling body 1 includes a transmission case 4 also serving as a frame, a support frame 5 extending forward from the front of the transmission case 4, an engine 6 supported and fixed on the support frame 5, and a transmission case 4. A steering handle 7 extending rearward from the upper portion, a belt-driven traveling clutch 8 erected from the engine 6 to the transmission case 4, and one provided at the lower left side of the transmission case 4 The driving wheels 9 and the like constitute a single-wheel grounding type.

As shown in FIGS.
The support frame 5 is located just before the drive wheels 9.
And a rotary blade 11 rotatably mounted around the longitudinal axis P1 in the housing 10, and is arranged in a rotary manner at its left end. Each rotation axis core P2, P3
A rotary-side slope reaping device 3 equipped with two rotating blades 12 rotatable around the front and rear shaft axis P4
It is connected to the surroundings so that it can swing up and down. The housing 10 of the road surface reaper 2 is formed such that its front and left sides are open, and one gauge wheel 13 is mounted at the front of the housing 10 such that the gauge wheel 13 is located at the front left and right center of the housing 10. Have been.

The construction of the slope cutting device 3 will be described in detail. As shown in FIGS. 2 to 4, the slope cutting device 3 includes a first slope cutting portion 3A adjacent to the road cutting device 2; The first slope reaping unit 3A includes a second slope reaping unit 3B capable of swinging displacement in the front-rear direction with respect to the first slope reaping unit 3A. A first rotating blade 12A adjacent to the rotating blade 11 of the road surface reaping device 2 and a housing 10 of the road surface reaping device 2 which surrounds the rotating blade 12A and swings up and down around a longitudinal axis P4. The first housing 14A is supported. On the other hand, the second slope cutting unit 3B includes a second rotating blade 12B that is separated from the rotating blade 11 of the road surface cutting device 2 among the two rotating blades 12 installed side by side, and the second rotating blade 12B is externally mounted. And a second housing 14B which is supported by the first housing 14A so as to be able to swing back and forth around the rotation axis P2 of the first rotary blade 12A. That is, the first housing 14A and the second housing 14B constitute the housing 14 of the slope cutting device 3. The first housing 14A is made of a substantially square flat plate, and is equipped with a gauge wheel 15 located on the left front thereof, and a rear wall 17 made of an elastically deformable rubber plate. The second housing 14B is made of a substantially rectangular flat plate, and is provided with a wall 18 having a left wall 18A and a rear wall 18B made of an elastically deformable rubber plate. The first rotary blade 12 </ b> A is arranged close to the rotary blade 11 of the road surface mowing device 2 so that a part of the cutting area (rotation locus) overlaps with the rotary blade 11, and prevents the contact with the rotary blade 11. It is mounted so as to rotate at a rotational phase different from the rotational phase of the rotary blade 11 from a point. In addition, the second rotary blade 12B is disposed close to the first rotary blade 12A in a state where a part of the cutting areas overlap with each other, and prevents the first rotary blade 12A from being in contact with the first rotary blade 12A. It is mounted so as to rotate at a rotation phase different from the rotation phase of the rotary blade 12A. That is, during the reaping operation, uncut leaves occur between the road surface reaping device 2 and the first slope reaping unit 3A and between the first slope reaping unit 3A and the second slope reaping unit 3B. Not configured.

The road surface mowing device 2 and the first slope mowing portion 3A of the slope mowing device 3 are provided with a transmission mechanism in which the drive shafts 11a and 12a of the rotating blades 11 and 12A respectively provided are of an axial transmission type. 19 are interlockingly connected. The first slope cutting unit 3A and the second slope cutting unit 3B of the slope cutting device 3.
Are the rotating blades 12A, 12
The drive shafts 12a and 12b of B are interlockingly connected by a chain transmission type interlocking mechanism 20. A belt-driven reaping clutch 21 extending from the engine 6 to the transmission mechanism 19
Has been erected. That is, each rotating blade 11, 12A, 12B of the road surface reaping device 2 and the side surface reaping device 3
It is driven by the power from the engine 6 transmitted via the reaping clutch 21. Transmission mechanism 1
Numeral 9 is configured to be freely bendable and extendable so as to allow up-and-down swing around the front-rear axis P4 of the slope cutting device 3 with respect to the road cutting device 2. The interlocking mechanism 20 includes a gear case 19A of a transmission mechanism 19 having one end of a casing 20A fixed to the center of the upper surface of the first housing 14A.
The rotation axis of the first rotary blade 12A (drive shaft 12a
The shaft 20A is swingably supported around P2, and the other end of the casing 20A is fixed to the center of the upper surface of the second housing 14B. Further, a sector gear 20a meshing with a pinion gear 22a of the electric motor 22 provided on the upper surface of the first housing 14A is mounted on one end of the casing 20A.

With the above configuration, when the electric motor 22 is operated to swing the interlocking mechanism 20 about the axis P2 of the drive shaft 12a in the first slope cutting unit 3A as a fulcrum, the swing operation is carried out. The second slope reaping unit 3B swings in the front-rear direction with respect to the first slope reaping unit 3A with the axis P2 of the drive shaft 12a in the first slope reaping unit 3A as a fulcrum. Owing to this swing displacement, the slope cutting device 3
The cutting width can be changed. As shown in FIG. 2, the swing displacement of the second slope cutting unit 3B in the front-rear direction with respect to the first slope cutting unit 3A is in a direction orthogonal to the first slope cutting unit 3A and the longitudinal direction of the body. The first slope reaping unit 3A and the second slope reaping are set in a range from a position aligned on a straight line with the first slope reaping unit 3A and a position aligned on a straight line along the longitudinal direction of the body. By swinging the second slope cutting unit 3B in the front-rear direction with respect to the first slope cutting unit 3A so that the unit 3B and the unit 3B are aligned on a straight line in a direction orthogonal to the longitudinal direction of the body, The cutting width of the surface cutting device 3 can be changed to a state where the cutting width is maximized. Also, the second slope cutting unit 3B is arranged with respect to the first slope cutting unit 3A so that the first slope cutting unit 3A and the second slope cutting unit 3B are aligned in a straight line along the longitudinal direction of the body. By swinging and displacing in the front-back direction, the cutting width of the slope cutting device 3 can be changed to a state in which the cutting width is the smallest. Further, the first slope cutting unit 3A and the second slope cutting unit 3B are aligned with the first slope cutting unit 3A such that the first slope cutting unit 3A and the second slope cutting unit 3B are aligned with a desired inclination angle with respect to the longitudinal direction of the body. Two slope reaper 3
By swinging and displacing B in the front-rear direction, the cutting width of the slope cutting device 3 can be changed to a desired cutting width. The electric motor 22 is provided with a worm gear type reduction mechanism (not shown), so that the second slope cutting unit 3B can be prevented from swinging due to its own weight. The operation state of the electric motor 22 can be switched by operating an operation switch (not shown) provided on the steering handle 7.

Also, as described above, the first slope cutting unit 3
Since the cutting width of the slope cutting device 3 is changed by the swinging displacement of the second slope cutting portion 3B in the front-rear direction with respect to A, the slope cutting device 3 with respect to the road cutting device 2 is changed. In the state where the vertical swing angle is defined according to the inclination angle of the inclined surface connected to one side end of the traveling road surface, regardless of the change in the cutting width of the slope cutting device 3, the rotation of the road surface cutting device 2 is changed. When the distance between the blade 11 and the first rotating blade 12A of the slope cutting device 3 adjacent to the rotating blade 11 is left uncut between the road cutting device 2 and the slope cutting device 3, or Rotating blades 11 and 1 of the road surface reaping device 2 and the side surface reaping device 3
An appropriate distance that does not cause inconvenience such as contact between 2A can be constantly maintained.

[Other Embodiments] Hereinafter, other embodiments of the present invention will be listed. As the two-side mowing machine, the traveling body 1 may be configured as a riding type, or the traveling body 1 may be configured as a two-wheel grounding type. The road mowing device 2 may be configured to be equipped with a plurality of rotating blades 11, and may be a reciprocating type that performs cutting by relative reciprocating sliding between a pair of upper and lower blades. May be configured. Slope reaper 3
May be connected to the right end of the road mowing device 2. As shown in FIG. 5, a plurality of rotating blades 12 (two rotating blades 12B and 12C in the drawing) may be provided side by side in the second slope cutting unit 3B of the slope cutting device 3. . Moreover, you may comprise so that the several rotating blade 12 may be side-by-side mounted in the 1st slope cutting part 3A of the slope cutting device 3. FIG. The second slope cutting unit 3B swings and displaces the slope cutting device 3 in the front-rear direction around the axis different from the rotation axis P2 of the first rotating blade 12A with respect to the first slope cutting unit 3A. It may be configured as follows. In this case, with the swing displacement of the second slope cutting unit 3B, the first rotating blade 1
Since the distance between the drive shaft 12a of the 2A and the drive shaft 12b of the second rotary blade 12B changes, an interlocking mechanism 20 that interlocks and connects the drive shafts 12a and 12b to each other.
Need to be configured to be stretchable. The swing displacement operation of the second slope cutting unit 3B may be configured to be performed by the expansion and contraction operation of the cylinder, or may be configured to be performed manually. As shown in FIG. 6, the slope cutting device 3 is composed of a plurality of rotating blades 12 (two rotating blades 12 </ b> A and 12 </ b> B in the drawing) and one housing 14 that integrally surrounds the rotating blades 12. In addition, the axis P of the drive shaft 12a of the rotating blade 12A of the plurality of rotating blades 12 adjacent to the road surface reaping device 2 is provided.
2 may be configured so as to be able to swing back and forth, and the swinging back and forth may change the cutting width of the slope cutting device 3. Reference numeral 24 in FIG. 5 denotes a bracket for connecting the slope cutting device 3 to the road cutting device 2 so as to be vertically swingable around a longitudinal axis P4.
Reference numeral 25 denotes a rear wall made of an elastically deformable rubber plate mounted on the rear portion of the housing 14. The adjacent end side runs on the road surface reaping device 2.

[Brief description of the drawings]

FIG. 1 is an overall side view of a two-side mowing mower.

FIG. 2 is a schematic plan view of a two-side mowing mower.

FIG. 3 is a longitudinal sectional front view showing a configuration of a road surface reaper and a slope reaper.

FIG. 4 is a perspective view of a main part of a slope cutting device showing a configuration of a rear wall of a first slope cutting unit and a wall body of a second slope cutting unit.

FIG. 5 is a schematic plan view showing another embodiment in which two rotating blades are provided side by side in a second slope cutting unit.

FIG. 6 is a schematic plan view showing another embodiment in which the sloping reaper swings back and forth around the rotation axis of the rotating blade adjacent to the road reaping device.

[Explanation of symbols]

 2 Road surface mowing device 3 Slope mowing device 3A First slope mowing portion 3B Second slope mowing portion 20 Interlocking mechanism

Claims (1)

(57) [Claims] 1. A slope cutting device for cutting grass growing on an inclined surface connected to one end of a road surface, and a rocking device for slopes cutting up and down at one end of a road cutting device for cutting grass grown on a running road surface. A lawn mower connected movably, comprising: a slope cutting device, a first slope cutting portion adjacent to the road cutting device, and a front-rear direction with respect to the first slope cutting portion. And a second slope cutting unit configured to be capable of swinging displacement. After transmitting engine power to the road surface cutting device, the engine power is transmitted to the slope cutting device. A mowing machine characterized in that the power transmission from the mowing section to the second slope mowing section is performed by a chain-type or belt-type interlocking mechanism provided over the upper part of the housing.