JP3333870B2 - 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 mowing machine equipped with a mowing device on a traveling body to cut weeds and the like on vacant lots and sloping lands. Related to technology to prevent scattering.

[0002]

2. Description of the Related Art A mowing machine of this type, that is, a bottomless box-shaped cutting blade housing for covering a rotary cutting blade, has left and right side walls on its left and right side walls, and a lower front wall of the cutting blade housing and the right and left sides. Japanese Unexamined Patent Publication No. Hei 8-37869 discloses a mowing machine having a mowing device in which a mowing device having a continuous opening for guiding planted grass is formed at a lower portion of a front portion of a side wall.
One disclosed in Japanese Patent Application Laid-Open No. 4-200312 is known.

[0003]

In a conventional mowing device,
As shown in the latter publication, a hanging curtain having flexibility is provided in the opening of the front and rear walls of the housing, so that the planted grass can be guided into the cutting blade housing while cutting grass, foreign matter, etc. I try not to fly outside. Openings at the front and rear ends of the housing side wall allow grass to be introduced from the side of the housing, and it is possible to suppress a decrease in the amount of grass introduced into the housing due to a difference in radius during turning. And pebbles tend to pop out, leaving room for improvement. An object of the present invention is to prevent scattering from the housing opening while preventing the mowing function from being hindered.

[0004]

[Means for Solving the Problems]

[Structure] The characteristic structure of the invention according to claim 1 is that a grounding sled body is provided on left and right side walls of a bottomless box-shaped cutting blade housing that covers a rotary cutting blade, and a lower front wall and left and right sides of the cutting blade housing are provided. A mowing machine provided with a mowing device having a continuous opening portion for guiding planted grass formed in a lower portion of a front portion of a side wall in a traveling body, a flexible device capable of closing a main opening portion of the lower portion of the front wall. And a flexible auxiliary curtain that can close an auxiliary opening at the lower front part of the left and right side walls, and the main hanging curtain and the auxiliary hanging curtain are integrally formed.
Before folding the banner,
Attach to the front wall and the side wall.
Mounting position of the main banner against the front wall.
Lower than the position in the vertical direction in the cutting blade housing
It is in the point provided in the position .

[0005] The second feature configuration is the same as the first feature configuration,
This is a point that a guide member for regulating the amount of rearward displacement of the main banner to a predetermined amount or less is provided.

[Operation] According to the first characteristic configuration, the hanging curtain having flexibility is mounted not only in the main opening but also in the auxiliary opening, so that scattering from the opening in the side wall can be suppressed or prevented. Due to the flexibility, the function that the grass introduction amount is hardly reduced even during the turning traveling can be maintained. The mere provision of the main hanging curtain and the auxiliary hanging curtain has a risk that pebbles and the like may be scattered from gaps by pushing the hanging curtains.However, in the case of the present invention in which the main hanging curtain and the auxiliary hanging curtain are connected and integrated, this is not the case. In addition to eliminating the risk of being scattered by being pushed away, both banners are flexible, so that they can be displaced even when connected, and the grass introduction function is not impaired.

According to the second characteristic configuration, since the amount of rearward displacement of the main hanging curtain is regulated by the guide member, it is possible to avoid the possibility of the elastically deformed portions being concentrated at the root of the hanging curtain or the possibility of permanent deformation due to excessive displacement. , Which contributes to better exhibiting the function as a banner.

[Effect] In the mowing machine according to the first aspect, by cutting the front and side openings of the cutting blade housing by connecting the hanging curtain made of a flexible material, a good mowing function is not impaired. Scattering phenomena such as pebbles jumping out of the cutting blade housing can be suppressed or prevented, and the working environment can be further improved.

The mowing machine according to the second aspect has an advantage that the function and reliability of the main banner are improved in addition to the above effects.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a radio-controlled mower equipped with a mowing device A in front of a traveling body B. 1 is a hood, 2 is a crawler traveling device, 3 is an engine, 4 is a lifting link mechanism, 5 is a ropes, and 6 is a patrol light. This mower is operated by a pilot (not shown) having a transmitter at a remote position such as behind the fuselage B, and is mainly used for cutting weeds on hills and slopes such as banks. .

As shown in FIGS. 3 and 4, the mowing device A has a well-known flare mower structure, and includes a cutting blade 7 that rotates about a left-right axis P and a bottomless box-shaped cutting blade that covers the cutting blade 7. It comprises a blade housing 8 and a hydraulic motor 9 for driving the cutting blade,
It is connected to the traveling machine body B by a lifting link mechanism 4 so as to be able to move up and down. The hydraulic motor 9 is of a reversible type, and the cutting blade housing 8 is configured to be symmetrical in front and rear so that mowing work can be performed during forward traveling and reverse traveling.

The cutting blade housing 8 includes front and rear walls 8a, 8b,
A sled body 10 of a pipe, which includes left and right side walls 8c and 8d and a ceiling wall 8e, and can be grounded, is attached to the left and right side walls 8c and 8d. That is, the lower part of the front wall 8a and the left and right side walls 8c, 8
A continuous opening S for planting grass guidance is formed in each of a portion extending to the lower front portion of d and a lower portion of the rear wall 8b and a lower rear portion of the left and right side walls 8c and 8d. The opening S is
It comprises a main opening Sm at the lower part of the front wall 8a or the lower part of the rear wall 8b, and auxiliary opening parts Ss, Ss at the lower front part of the left and right side walls 8c, 8d.

Each opening S has three rubber hangs 11, 1
2 and 13 are suspended and deployed. Due to the elastic displacement, the rearward displacement is performed to introduce the planting grass at the opening on the upper side in the traveling direction, and the lower side in the traveling direction is in a hanging state so that the cut grass is scattered from the opening S. Functions to block to prevent.
The left and right rubber hangs 11 and 13 are formed integrally with main body rubbers 11a and 13a corresponding to the main opening portion Sm and side rubbers 11b and 13b corresponding to auxiliary opening portions Ss before and after the sled body 10 (FIG. 5), which is bent 90 degrees and bolted to the cutting blade housing 8. The center rubber hang 12 has a simple rectangular shape, and each of the rubber hangs 11, 12, 13 is provided with a slit h for facilitating deformation. Here, left and right body rubber 1
1a, 13a and the center rubber hanging 12 correspond to the main hanging curtain, and the left and right side rubbers 11b, 13b correspond to the auxiliary hanging curtain, respectively.

The three rubber hangs 11, 12 and 13 are bolted in a sandwich structure sandwiched between front and rear walls 8a and 8b and a backing plate 14.
It functions as a guide member that regulates the amount of rearward (or forward) displacement of 1, 12, and 13 to a predetermined amount or less. In other words, the rubber dripping alone causes a large displacement, and there is a strong possibility that trash or a cardboard box is introduced into the cutting blade housing 8. However, if the backing plate 14 is provided, the introduction of grass is permitted, but foreign matter lumps are allowed. Intrusion can be stopped.

As shown in FIG. 3, a thick rubber plate 15 is mounted on the inner surface of the ceiling wall 8e so that pebbles and the like blown by the rotary cutting blade 7 do not directly collide with the ceiling wall 8e. . That is, it functions as an impact absorbing material that guards the ceiling wall 8e from being dented or damaged. Rubber plate 1 against polygonal ceiling wall 8e in side view
Reference numeral 5 denotes an arc shape in which gaps are formed at several places between the two, and the presence of the gaps also exerts an impact reducing effect.

As shown in FIGS. 2 and 6, a hanging curtain 16 is provided at the lower abdomen of the body B between the right and left crawler traveling devices 2 and 2 in rear view. Two right and left mounting brackets 18 and 18 are fixed to the body frame 17, and the hanging curtain 16 with the slit 16 a is bolted to the respective mounting brackets 18 and 18 in a state of being sandwiched by the reinforcing plate 19. The banner 16 is formed of a sandwich-structured member sandwiching a reinforcing plate 16B between two rubber plates 16A, 16A.

During the mowing work while moving backward by rotating the cutting blade 7 in the direction of the arrow a, the hanging curtain 16 causes pebbles and the like, which have come out of the rear opening S, to pass through the lower abdomen of the traveling machine B and to move toward the rear of the machine. And serves as a guard member for preventing scattering when an operator or another worker is behind the fuselage.

[Brief description of the drawings]

FIG. 1 is a side view of a mower.

FIG. 2 is a rear view of the mower.

FIG. 3 is a partially cutaway side view of the mowing device.

FIG. 4 is a perspective view of a mowing device.

FIG. 5 is a single-piece perspective view showing the left rubber droop.

FIG. 6 is a partially cutaway side view showing a mounting structure of a hanging curtain on a lower abdomen of a body.

[Explanation of symbols]

 2 Traveling device 7 Cutting blade 8 Cutting blade housing 8a Front wall 8b Rear wall 8c Left wall 8d Right wall 10 Sled body 11a, 13a Main hanging curtain 11b, 13b Auxiliary hanging curtain 14 Guide member 16 Hanging curtain A Mowing device S Opening Sm Main opening portion Ss auxiliary opening

Continued on the front page (72) Inventor Masayuki Maehara 173 Tenjin Shin-ku, Kurobe City, Toyama Prefecture Inside the Kurobe Construction Office, Hokuriku Regional Construction Bureau, Ministry of Construction In-house (72) Inventor Tetsuo Yamaguchi 64 Ishizukita-cho, Sakai City, Osaka Prefecture Inside Kubota Sakai Works Co., Ltd. 56) References JP-A-4-200312 (JP, A) JP-A-61-136831 (JP, U) JP-A-58-96725 (JP, U) JP-A-64-52426 (JP, U) 61-188434 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01D 34/62 A01D 34/68

Claims (2)

(57) [Claims] A bottom-less box-shaped cutting blade housing that covers a rotary cutting blade, a left and right side wall portion of the cutting blade housing is provided with a sled body that can be grounded, and a lower front wall of the cutting blade housing and a lower front portion of the left and right side walls; A mowing machine provided with a mowing device having a continuous opening portion for guiding planted grass on a traveling body, wherein a main hanging curtain having flexibility capable of closing a main opening portion at a lower portion of the front wall. And equipped with an auxiliary hanging curtain having flexibility capable of closing an auxiliary opening at the lower front part of the left and right side walls, and integrally forming the main hanging curtain and the auxiliary hanging curtain,
Fold the integrally formed banner to the corresponding front
Mounting the auxiliary hanging curtain to the side wall,
From the mounting position of the hanging curtain to the front wall, the cutting blade
A mowing machine installed at a low position in the vertical direction in jing . 2. The mowing machine according to claim 1, further comprising a guide member for restricting a rear displacement amount of the main hanging curtain to a predetermined amount or less.