JP3278408B2 - 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 mower. More specifically, the present invention relates to a method in which cut grass after cutting is not entangled with an axle or blows up together with dust to obstruct the cutting operation.

[0002]

2. Description of the Related Art For example, a riding type mower has a frame provided with wheels on front and rear sides. A lug, which is a projection, is usually formed on the peripheral surface of each wheel to increase the steering force and the propulsion force. Also, a mowing section for mowing grass is provided below the frame between the front and rear wheels. The reaper has a cutter that rotates substantially horizontally and cuts grass, and a cutter cover that covers around the cutter. This cutter normally rotates clockwise in plan view. For this reason, among the cut grasses cut by the mower, particularly those having a required weight, for example, having a long overall length, are likely to be blown to the right front of the cutter by the centrifugal force.

[0003]

However, the above-mentioned conventional mower has the following problems. That is, as the grass cut by the cutter moves,
They could get caught up in the lugs and be rolled up, then fall into the wheels and become entangled with the axle. If a large amount of grass is entangled with the axle, the wheels cannot rotate. In addition, even when it is possible to rotate, the cut grass becomes a resistance at the time of rotation and requires a larger torque than usual, so that the fuel consumption rate is deteriorated. Especially, grass is easily cut off to the right front of the cutter.
It was easy to get entangled with the axle of the right front wheel. As a result, the steering wheel can be taken to the right side, so that driving operation has been difficult.

Further, when a large amount of cut grass is entangled with the axle, the cut grass causes the axle to have a large diameter, so that the grass to be cut may be pushed down. The grass that has been pushed down breaks and falls down sideways. As a result, the grass passed below the cutter and could not be cut, leaving uncut leaves.

[0005] As described above, the cut grass having a relatively long overall length is easily blown to the right front by the centrifugal force of the cutter. However, the finely cut pieces were blown away along with the dust by the wind pressure of the cutter, and were blown upward from the front, side, and rear of the cutter cover. When the fine grass and dust blow up, the air introduction part of the air cleaner and cooling device for the prime mover, which is located at the top of the frame, gets clogged, and the operability is deteriorated by being caught by the movable parts. Or something. Also, grass and dust scatter around the mower,
The working environment was also getting worse.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to prevent the cut grass after being cut off from being entangled with an axle or blowing up with dust and dirt, thereby hindering the cutting operation. It is intended to provide a mower.

[0007]

Means of the present invention taken to achieve the above object are as follows. In the first invention, a mowing portion for mowing grass is provided below the frame, and the mowing portion includes a cutter that rotates substantially in a horizontal direction, and a cutter cover that covers the cutter. A mowing machine, comprising a mounting plate and a cover plate, the covering member being disposed so as to cover the inside of the wheel so that the mowing grass cut by the cutter does not substantially hit the wheel.
The attachment plate is provided so that the wheels can rotate.
The axle is fixed so that it does not move.
Attached to the above mounting plate so that it can be replaced.
A mower characterized by being cut off.

[0008] In the second aspect of the present invention, a mowing portion for mowing grass is provided below the frame, and the mowing portion includes a cutter that rotates substantially horizontally, and a cutter cover that covers the cutter. A covering member disposed to cover the inside of the wheel so that the grass cut by the cutter does not substantially hit the wheel.
The cover member is in contact with the wheel.
The part corresponding to the front part of the wheel is
Effectively prevents grass from entering between the wheels
Position the edge toward the center of the wheel before cutting.
A mowing machine characterized in that it is hard to be turned up by grass.

According to a third aspect of the invention, the cut grass is provided with a shielding member for substantially shielding the cut grass from being blown upward from the front, side or rear of the cutter cover. A mower according to the first or second invention .

The mower according to the present invention may be a riding type or a walking type.

(Operation) Since a covering member is provided so as to cover the inside of the wheel so that the grass cut by the cutter does not substantially hit the wheel, the grass is directed toward the wheel. Even when cut, the cut grass does not adhere to the inner surface of the wheel and is not wound up by the rotation of the wheel. In this way, the mowing machine can prevent the mowing grass from being entangled with the axle of the wheel by the cover member, so that the wheel cannot be rotated and the power energy is not wasted. In addition, the steering wheel is not removed, and the operability of driving is improved. Furthermore, since the cut grass does not become entangled with the axle, the grass to be cut will not be pushed down, and there will be no uncut.

The cover member is in contact with the wheel, and is provided in front of the wheel.
The part corresponding to the part side is connected to the wheels by the movement of the mower.
Edges should be removed to prevent substantial grass ingress
It is positioned on the center of the wheel,
What is difficult is that grass does not substantially enter between the wheel and the cover member due to the running of the mower. Therefore, the grass to be cut does not enter between the front wheel and the cover member, is pushed down, and passes under the cutter.
In addition , grass can be reliably cut.

[0013] In the case where the cut grass is provided with a shielding member that substantially shields the cut grass from blowing upward from the front, side, or rear of the cutter cover, the cut grass and dust are finely cut. Even if it is blown to the surroundings by the wind pressure of the cutter, the shielding member can be shielded so that it does not blow up. As a result, the air introduction portion of the air cleaner or the cooling device for the prime mover, which is arranged at the upper portion of the frame, does not become clogged, and the operability is not deteriorated by being caught by the movable portions. In addition, since grass and dust are not scattered around the mower, the working environment is improved.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. 1 is a schematic side view showing an embodiment of the mower according to the present invention, FIG. 2 is a schematic front view of the mower shown in FIG. 1, and FIG. 3 is a right front wheel of the mower shown in FIG. FIG. 4 shows the right front wheel of FIG. 3 in an enlarged state, and FIG. 5 is a perspective view of the right front wheel of the mower shown in FIG. 1 and its vicinity. FIG. 6 is an enlarged explanatory view of the right rear wheel of the mower shown in FIG. 1 and the vicinity thereof in a perspective view.

The symbol K indicates a riding type mower. The mower K has a frame 1. At the front of the frame 1, a front axle 11 is provided which can swing right and left around a center pin 10 (see FIG. 2). Bearing portions 110, 11 are provided at both ends of the front axle 11.
0 is provided. Each bearing portion 110 is formed in a substantially “L” shape, and the other end of the axle 20 that rotatably supports the front wheel 2 at one end side is attached to be rotatable in the circumferential direction.

Inside the front axle 11, a bracket 12 having substantially the same length as the entire length of the front axle 11 is provided. A horizontal shielding plate 70 (described later), which is one of the shielding members, is attached to the bracket 12. A rubber plate 19 is provided slightly downward and forward of the front axle 11 so as to hang downward. The front wheels 2, 2
Steering wheels, which are linked with the movement of a handle H (described later).

At the rear of the frame 1, rear wheels 3, 3 are provided at both ends.
A rear axle 30 is provided. Rear wheel 3,
Reference numeral 3 denotes drive wheels for driving the mowing machine K by the power of a prime mover E (described later).

Each of the front wheels 2 and the rear wheels 3 has wheels 21 and 31 made of metal. At the center of the wheel 21 of each front wheel 2, a bearing 22 is provided at one end of an axle 20 (see FIG. 4). Rubber tires 23 and 33 are attached to the periphery of each of the wheels 21 and 31.
On the peripheral surfaces of the tires 23, 33, lugs 230,..., 330,.
・ A plurality of are formed. Lugs 230 ・ ・ ・ 330 ・
..The outer surfaces of the grounding surfaces 231...
31 ...

Inside the front wheels 2, a covering member 4 is provided so as to cover the front wheels 2 so that the grass cut by a cutter 50 (described later) does not substantially hit the front wheels 2. . The cover member 4 includes a metal attachment plate 40 and a rubber cover plate 41 attached to a peripheral portion of the attachment plate 40.
It has.

The mounting plate 40 is fixed to the axle 20 by welding W so as not to move. Further, holes 400 penetrating at four locations are formed at required positions of the attachment plate 40. Holes 410... (See FIG. 4) are also formed in the cover plate 41 at locations corresponding to the holes 400. The cover plate 41 has holes 400... And holes 410.
・ Overlaid and attached with bolts B and nuts N.

When the cover plate 41 is attached to the attachment plate 40, the portion corresponding to the rear side of the front wheel 2 has a contact surface 231.
Are formed to be slightly smaller than the maximum rotation diameter of..., And are provided in contact with the side portions of the tire 23.
However, the shape of the portion corresponding to the rear side of the front wheel 2 is not limited to this, and it is sufficient that the cut grass cut by the cutter 50 does not substantially hit the front wheel. In the mower K shown in the present embodiment,
Specifically, the lug 230 may be larger than the rotation diameter of the inner end side base. Therefore, in this case, it is also possible to form them so as to have the same or larger diameter as the maximum rotation diameter of the contact surfaces 231. This shape is appropriately changed depending on conditions such as the soil quality of the construction site.

A portion of the cover plate 41 corresponding to the front side of the front wheel 2 is formed to be smaller than the rotation diameter of the inner end base of the lugs 230... (See FIG. 3). The edge is provided in contact with the side of the tire 23 of the front wheel 2. Specifically, the edge portion is located on the center side of the tire 23 so that it is hard to be turned up by the grass before cutting and the grass does not substantially enter the front wheel 2. But,
The shape of the portion corresponding to the front side of the front wheel 2 is not limited to this, and may be formed so that grass does not substantially enter the front wheel 2 when the mowing machine K travels. .

In the present embodiment, the cover member 4 is provided inside the front wheels 2 on both the left and right sides. However, the present invention is not limited to this. For example, the cutter may be provided only on the right front wheel side as long as the cutter rotates clockwise in plan view. Conversely, if the cutter rotates counterclockwise in plan view, it may be provided only on the left front wheel side. Further, it may be provided inside the rear wheel. Also in the case where it is provided on the rear wheel, it can be provided on one or both of the right rear wheel and the left rear wheel.

In the present embodiment, the front wheels 2, 2 and the rear wheels 3, 3 use lugs 230... Formed on the peripheral surface of the tire 23. However, the present invention is not limited thereto, and a lug may not be formed. Also in this case, the portion of the covering member corresponding to the rear side of the front wheel and the rear wheel may be formed so that the grass cut by the cutter does not substantially hit the front wheel. What is necessary is just to be formed so that it may become larger than the rotation diameter of the inner end side of a surface part. The portion of the cover member corresponding to the front side of the front wheel only needs to be formed so that grass does not substantially enter between the cover member and the front wheel due to the traveling of the mower.

As described above, the cover plate 41 is
Are provided in contact with the side portions of. Therefore, the cover plate 41
Is a consumable that is worn by rubbing against the tire 23 and is replaceable by removing the bolt B and the nut N.

A motor E for driving the rear wheels 3, 3 and the cutter 50 is mounted on the rear portion of the frame 1. In addition,
Various clutch devices are interposed between the prime mover E, the rear wheels 3, 3 and the cutter 50 so that power can be transmitted intermittently and arbitrarily.

A handle H for steering the front wheels 2 is provided at the front of the frame 1. Below the handle H,
A footrest 13 on which a worker places a foot is provided. A brake pedal is provided on the footrest 13 (not shown). Reference symbol C is a battery (see FIG. 1).

A seat frame plate 14 (see FIG. 1) formed by being raised upward is provided at an upper portion of an intermediate portion of the frame 1. A seat 15 is attached to an upper portion of the seat frame plate 14. Below the seat frame plate 14, a vertical shaft 16 (not shown in the figure) for rotating the cutter 50 and a driven pulley (not shown) fixed thereto are provided. The vertical shaft 16 passes through a cutter cover 51 (described later).

At the lower part of the middle part of the frame 1, there is provided a cutting section 5 for cutting grass. The cutting unit 5 includes a cutter 50 that rotates substantially horizontally to cut the grass, and a cutter cover 51 that covers the periphery of the cutter and prevents the cut grass and stones from scattering around. The cutter cover 51 is
The traveling direction side is open, and the other portions are closed by bending the edges so as to hang down. It should be noted that grass, stones, and the like that attempt to fly out from the open traveling direction side of the cutter cover 51 do not scatter around the rubber plate 19.

The cutter 50 is attached to the lower end of the vertical shaft 16 penetrating the cutter cover 51. Vertical axis 1
Reference numeral 6 is arranged substantially at the center of the cutter cover 51. The cutter 50 has a plate-shaped cutter bar 500, and a cutting blade 501 is attached to both ends of the cutter bar 500 via shaft pins (not shown) so as to be swingable (fixable) in the horizontal direction. is there. Cutter 50
Rotates clockwise in plan view. Note that the rotation direction of the cutter 50 is not limited.

The reaper 5 is raised and lowered on the frame 1.
A link device 17 (see FIG. 1) having a mounting pin and a link member is provided. Adjustment of the cutting height of the cutting unit 5 is performed by operating a lifting handle 18 provided beside the seat 15.

A horizontal shielding plate 70, which is one of the shielding members, is attached to the bracket 12 described above. The horizontal shielding plate 70 is formed in a substantially rectangular plate shape, and is attached by a mounting bracket 700 such that one long side thereof extends over substantially the entire length of the bracket 12. The other side of the long side of the horizontal shielding plate 70 is a free end that is not fixed,
It is provided on the upper part of the cutter cover 51. The horizontal shielding plate 70 is a consumable product made of rubber, and can be replaced by removing the mounting bracket 700.

On the right side of the short side of the horizontal shielding plate 70, an inner vertical shielding plate 71, which is one of the shielding members, is attached by a fitting 710 so as to hang down from the horizontal shielding plate 70. A shielding member is formed at the front right corner of the reaper 5 so as to extend forward from the side surface of the cutter cover 51 so that a part of the front end substantially conforms to the outer shape of the front wheel 2. The outer vertical shielding plate 72, which is one of the above, is attached by a mounting bracket 720. The inner vertical shielding plate 71 and the outer vertical shielding plate 72 are provided only on the right front side because the cutter 50 rotates clockwise in plan view. When the rotation direction of the cutter is counterclockwise, it is provided on the left front side. Also, they may be provided on both sides regardless of the rotation direction of the cutter.

At the rear corner of the cutting section 5, a cutter cover 5 is provided.
A rear shielding plate 73, which is one of the shielding members and extends rearward from the upper surface of the rear wheel 1 and has an outer corner side substantially conforming to the outer shape of the rear wheel, is attached by a mounting bracket 730. Although only the right rear corner is shown in FIG. 6,
The same thing is attached to the left rear corner. The inner vertical shielding plate 71, the outer vertical shielding plate 72, and the rear shielding plate 73 are consumables made of rubber, and can be replaced by detaching the corresponding mounting hardware.

(Operation) The operation of the embodiment of the present invention will be described with reference to FIGS. The mower K is provided so that the portion of the cover member 4 corresponding to the rear side of the front wheel 2 is slightly smaller than the maximum rotation diameter of the ground contact surfaces 231... It does not hit 2 directly.
As a result, the cut grass does not adhere to the wheel 21 of the front wheel 2,
Also, it cannot be wound up by the lugs 230.
Further, since the covering member 4 is fixed to the axle 20, the covering member 4 does not rotate with the front wheel 2 and the cut grass does not become entangled with the axle 20. In this way, the mowing machine K can prevent the mowing grass from being entangled with the axle 20 of the front wheel 2 by the cover member 4, so that the front wheel 2 cannot be rotated and the power energy is not wasted. Further, the steering wheel H is not removed, and the operability of driving is improved. Further, since the cut grass does not become entangled with the axle 2 of the front wheel 2, the grass to be cut is not pushed down, and the uncut leaves do not occur.

In the mower K, the portion of the cover plate 41 corresponding to the front side of the front wheel 2 is formed to be smaller than the rotation diameter of the inner end base of the lugs 230. By contacting the front wheel 2 with the side portion of the tire 23, grass is substantially prevented from entering the front wheel 2. As a result, as the mower K runs, the grass to be cut is
Since the cover plate 41 is not turned up, it does not enter the space between the front wheel 2 and the cover member 4 and is pushed down, and passes under the cutter 50, grass can be reliably cut.

Since the horizontal shielding plate 70 is provided so that the other side on the long side is placed on the upper part of the cutter cover 51 of the cutting section 5, the gap formed between the cutting section 5 and the bracket 12 is closed. Is peeling. At this time, since the other side of the long side of the horizontal shielding plate 70 is a free end, even when the cutting height of the cutting unit 5 is adjusted, the movement is not affected. Further, since the front axle 11 is deformed even when it swings, a gap is hardly formed between the front axle 11 and the cutter cover 51.

Also, the hanging inner vertical shielding plate 71
The gap formed between the lower part of the horizontal shielding plate 70 and the front wheel 2 is also substantially closed. Further, the gap formed between the cutter cover 51 and the front wheel 2 is also substantially reduced by providing the outer vertical shielding plate 72 whose tip portion is formed substantially along the outer shape of the front wheel 2. It is blocked. The gaps formed between the cutter cover 51 and the left and right rear wheels 3, 3 are also formed by the rear shielding plates 73, 73 whose outer corners are formed substantially along the outer shape of the rear wheels 3, 3. By providing, it is substantially closed.

As described above, since the respective gaps are closed by the respective shielding plates, finely cut grass and dust can be removed.
Even if it is blown around by the wind pressure of the cutter 50,
Each of these shielding plates can be shielded so as not to blow up. As a result, the air cleaner for the prime mover E and the air introduction portion of the cooling device, which are arranged at the upper portion of the frame, are not clogged, and the operability is not deteriorated by being caught by the movable portions. Further, since the cut grass and dust are not scattered around the mower K, the working environment is also improved.

The terms and expressions used in the present specification are merely illustrative and not restrictive, and terms and equivalents to the features described in this specification and some of them may be used. There is no intention to exclude expression. It goes without saying that various modifications are possible within the scope of the technical idea of the present invention.

[0041]

The present invention has the above configuration and has the following effects. (A) Since the covering member for preventing the cut grass cut by the cutter from substantially hitting the wheel is disposed so as to cover the inside of the wheel, the cut grass is cut off toward the wheel. Also, the cut grass does not adhere to the inner surface of the wheel and is not wound up by the rotation of the wheel. In this way, the mower can prevent the mowing grass from being entangled with the axle of the wheel by the cover member, so that the wheel cannot be rotated,
Power energy is not wasted.
In addition, the steering wheel is not removed, and the operability of driving is improved. Furthermore, because the grass is not entangled with the axle,
The grass to be reaped is not pushed down, and there is no uncut.

(B) The cover member is in contact with the wheel,
The part corresponding to the front side of the wheel is
In order to substantially prevent grass from entering between the wheels,
Position the edge toward the center of the wheel, and
In the thing which is hard to be turned up, grass does not substantially enter between the wheel and the cover member due to the running of the mower. Therefore, it is possible grass to be Karitoro is being pushed down enters between the front wheel and the covering member, it that would pass through the lower cutter rather name to reliably cut the grass.

(C) If the cut grass has a shielding member that substantially blocks the cut grass from blowing upward from the front, side, or rear of the cutter cover, the cut grass or the cut grass may be used. Even if the dust is blown to the surroundings by the wind pressure of the cutter, the shielding member shields the dust and prevents the dust from blowing upward. As a result, the air introduction portion of the air cleaner or the cooling device for the prime mover, which is arranged at the upper portion of the frame, does not become clogged, and the operability is not deteriorated by being caught by the movable portions. In addition, since grass and dust are not scattered around the mower, the working environment is improved.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an embodiment of a mower according to the present invention.

FIG. 2 is a schematic front view of the mower shown in FIG.

FIG. 3 is an enlarged explanatory view of a state in which a right front wheel of the mower shown in FIG. 1 is viewed from the inside.

FIG. 4 is an enlarged explanatory view showing a right front wheel in FIG. 3 and a section other than an axle and the like in a longitudinal direction.

FIG. 5 is an enlarged explanatory view of a main part of the lawn mower shown in FIG.

FIG. 6 is an enlarged explanatory view in which the right rear wheel of the mower shown in FIG. 1 and the vicinity thereof are perspectively viewed;

[Explanation of symbols]

 K Mower C Battery E Motor H Handle W Welding 1 Frame 10 Center pin 11 Front axle 110 Bearing 12 Bracket 13 Footrest 14 Seat frame plate 15 Seat 16 Vertical axis 17 Link device 18 Lifting handle 19 Rubber plate 2 Front wheel 20 Axle DESCRIPTION OF SYMBOLS 21 Wheel 22 Bearing 23 Tire 230 Lug 231 Contact surface 3 Rear wheel 30 Rear axle 31 Wheel 33 Tire 330 Lug 331 Contact surface 4 Cover member 40 Mounting plate 400 Hole 41 Cover plate 410 Hole 5 Cutting part 50 Cutter 500 Cutter bar 501 Cutting Blade 51 Cutter cover 70 Horizontal shielding plate 700 Mounting bracket 71 Inner vertical shielding plate 710 Mounting bracket 72 Outer vertical shielding plate 720 Mounting bracket 73 Rear shielding plate 730 Mounting bracket

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-153833 (JP, A) JP-A-8-322358 (JP, A) Japanese Utility Model Showa 57-102935 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) A01D 34/63-34/90

Claims (3)

(57) [Claims] A cutting section (5) for cutting grass is provided below the frame (1). The cutting section (5) includes a cutter (50) that rotates substantially horizontally, and a cutter (50). A mower provided with a cutter cover (51) covering the (50), comprising a mounting plate (40) and a covering plate (41), and the mowing cut by the cutter (50) is substantially performed. A cover member (4) arranged so as to cover the inside of the wheel so as not to hit the wheel.
Eteori, the attachment plate (40) axles which rotatably the wheel (20)
The cover plate (41) is fixed so as not to move
It is brought into contact with the wheels and is exchangeably mounted on the mounting plate (40).
A mowing machine characterized by being attached . 2. A mowing section (5) for mowing grass is provided below the frame (1). The mowing section (5) includes a cutter (50) that rotates substantially in a horizontal direction, and the cutter (50). And a cutter cover (51) for covering the inside of the wheel so that the cut grass cut by the cutter (50) does not substantially hit the wheel. A cover member (4) provided, the cover member (4) being in contact with the wheel,
The part corresponding to the front side of the
Edge to prevent substantial grass intrusion between
To the center side of the wheel and wind it with grass before cutting.
A mower, characterized in that it is difficult to be accessed. 3. The cut grass is cut by a cutter cover (5).
The mowing machine according to claim 1 or 2 , further comprising a shielding member that substantially shields from being blown upward from the front, side, or rear of (1) .