JPH0441798Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a mowing mark suppression device that is configured to be attached to a mower that travels by rolling its wheels onto the ground, as required. (b) Conventional technology When mowing a lawn with a lawn mower, if you apply stripes to the mowing marks while flattening them, the roots tend to lift up due to the force received during cutting. This calms down the mowing area, and the stripes make it clear where the work is to be done and serve as a mark for repeating the work.Furthermore, stripes are added to the finished marks, which improves the appearance of the cut marks. Conventionally, the ground contacting body located behind the cutting blade body is formed into a pressure roller, because it is convenient in this point.
This pressing roller is used to press down on the mowed land (for example,
(See Publication No. 32656).

(c) Problems to be solved by the invention By the way, in the conventional model, as seen in the above publication, among the running grounding bodies (wheels) that support the machine body, the running grounding body located behind the cutting blade is suppressed. The compacting roller was configured as a roller and the compacting roller rolled on the ground even when the machine was not mowing, so when driving on a hard place such as a road surface, vibration and noise were caused by the compacting roller's rotation on the ground. This causes problems such as various problems caused by vibration in various parts of the aircraft, noise that makes the operator and others nearby feel uncomfortable, and furthermore, the suppression roller doubles as a grounding body for traveling. Since it is not possible to drive without removing it, there is also the problem that it is inconvenient for mowing work where you do not want to apply pressure or stripes, or general grass mowing work where it is not necessary to apply pressure or add stripes. Ta.

Therefore, the present invention solves the above problems by creating a suppression device that can selectively perform reaping work while suppressing mowing marks, reaping work without suppressing mowing marks, and traveling in a non-reaping position. This is being carried out with the aim of

(d) Means for Solving the Problems In order to achieve this purpose, the mowing mark suppressing device for the grass mower of the present invention has front wheels 4, 4 and rear wheels 5, 5 on both left and right sides of the front and rear parts. In a lawn mower configured with a catcher 3 removably installed behind a casing 1, the front wheels and rear wheels are installed so that the vertical positions can be changed and adjusted by lever operation, and the rear wheels 5, 5
The compression roller 13 has a width that substantially matches the outer width interval of
between the bottom of the catcher 3 in a non-contact state.
The pressure roller 13 is supported by a roller support arm 10 that hangs down through the left and right sides of the catcher 3.
is configured to swing downwardly by a tension spring 17 within a range regulated by a stopper 18.

(E) Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In Fig. 3, the lawn mower has an output shaft of an engine 2 disposed in the upper part of a casing 1 vertically disposed inside the casing 1, and a cutting blade is installed at the lower end of the output shaft. The cut grass stems are discharged from a weeding path inside the casing into a catcher 3 installed at the rear of the casing.

In addition, front wheels 4,
4, rear wheels 5, 5 are installed on both left and right sides of the rear so that the vertical position can be adjusted by operating levers 6, 6, respectively, and the cutting height can be adjusted by adjusting the vertical position of these wheels. , a control handle 7 which allows the aircraft to travel even when the wheels touch the ground and which extends diagonally rearward and upward from the casing 1;
It is configured to be operated using the grip part of the machine.

Mounting parts 9, 9 are provided near the lower sides of the left and right bases 8, 8 of the operating handle 7, and the left and right roller support arms 1 are attached to the respective mounting parts 9, 9.
The upper end of 0,10 is attached.

As shown in FIGS. 1 and 2, each roller support arm 10, 10 has a cylindrical portion at the upper end that can freely rotate on a support shaft 11, 11 extending laterally outward from the mounting portions 9, 9. The wing bolts 12 are screwed into the catcher 3 to prevent it from coming off, and the extending portions from the cylindrical portion hang down on both sides of the catcher 3, and a pressure roller 13 is attached to the lower end of the hanging portion. supports both ends of the shaft 14.

And the hooking parts 15, 15 of the mounting parts 9, 9,
Tension springs 17, 17 are hung between the roller support arms 10, 10-side hooking parts, and the rollers are biased downward within the range regulated by stoppers 18, 18 attached to the mounting parts 9, 9. There is.

Note that the pressure roller 13 is formed to have a width that substantially matches the outer width interval of both rear wheels 5, 5, and when supported by the roller support arms 10, 10, the pressure roller 13 and the bottom of the catcher 3 are A guide plate 19 is interposed to prevent contact.
Further, when the rear wheels 5, 5 are adjusted to descend to the lowest position when the pressure roller 13 is regulated to descend by the stopper 18 and is at the lowest position, the pressure roller 13 is raised from the ground. It is installed as follows.

However, if you want to perform the reaping work while suppressing the mowing marks and creating stripes, it is possible to install the roller support arms 10, 10 on the mounting parts 9, 9, and the suppressing roller 13
is set below the catcher 3 at the rear of the rear wheels 5, 5, and is biased downward within the limit range of the stopper 18 by interposing a tension spring 17.

After installing the pressure roller 13 in this way, if the front and rear wheels 4 and 5 are positioned at the desired cutting height by operating the lever 6, for example as shown by the solid line in FIG. It can run by rolling, and the pressure rollers press against the ground.

Therefore, when the cutting blade is operated and the machine moves in this state, the mowing marks including the ruts of the wheels 4 and 5 are crushed by the pressing roller 13 and stripes are formed.

In addition, in FIG. 1, the roller support arm 10 is in contact with the stopper 18, and the further descent of the pressure roller is restricted, but this state is when the highest mowing is being performed. , the wheels 5, 5, which are in the solid line state in FIG.
It moves in an upward direction that is not limited by
Even if the lifting occurs, the presence of the guide plate 19 prevents the pressing roller 13 from coming into contact with the bottom of the catcher 3.

Furthermore, although the pressure roller 13 can be easily attached and removed by simply screwing in and removing the butterfly bolt 12, it is not necessary to remove the pressure roller 13 one by one when interrupting work and moving to the next reaping work site. However, if the wheel 5 is lowered significantly as shown in the imaginary line in Figure 1, the pressure roller 13, whose descent is restricted by the stopper 18, will rise above the ground, so the pressure roller 13 can remain attached. It is possible to travel and immediately resume reaping work at the destination.

(f) Effects of the invention As described above, the mowing mark suppression device of the grass mower according to the invention has front wheels 4 on both the left and right sides of the front and rear parts.
In a lawn mower, the catcher 3 is detachably installed at the rear of a casing 1 in which a rear wheel 4 and rear wheels 5, 5 are disposed, and the front wheel and the rear wheel are equipped so that the vertical positions of the front wheels and rear wheels can be adjusted by operating a lever. At the same time, a pressure roller 13 having a width substantially matching the outer width interval of the rear wheels 5, 5 is disposed below the bottom of the catcher 3 in a non-contact manner with a gap between the pressure rollers 13 and the catcher. The roller support arm 10 is supported by a roller support arm 10 that hangs down through the left and right sides of the stopper 1.
Since the tension spring 17 is configured to swing downwardly within the range regulated by 8, when the front and rear wheels are lowered while driving on the road, the pressure roller automatically switches to the non-grounding position. In particular, it is possible to move between work places without any trouble.

Since the compression roller 13 is provided behind the passage of the rear wheels 5, 5 and has a width that substantially matches the outer width interval of the rear wheels 5, 5, it also includes the rutted portion roughened by the front and rear wheels. The mowed land is well finished and compacted, and the compaction roller 1, which is separate from the rear wheels 5, 5,
3 is provided behind the rear wheel passage, but it is placed below the bottom of the catcher 3 in a non-contact manner with a gap, so the front-to-back length of the mower as a whole does not increase. Since the pressure roller is covered by the catcher 3, there is an advantage that the operator can safely operate the machine without any trouble when his or her toes come into contact with the pressure roller.

[Brief explanation of the drawing]

Fig. 1 is a partial side view showing the structure of the main parts of the embodiment device, Fig. 2 is a sectional rear view of the left half of the main part in Fig. 1, and Fig. 3 is an overall side view of the mower according to the embodiment device. It is. 1...Casing, 3...Catcher, 4...
...front wheel, 5 ... rear wheel, 10 ... roller support arm, 13 ... pressure roller, 17 ... tension spring,
18...stopper.

Claims (1)

[Scope of utility model registration request] In a lawn mower configured by detachably equipping a catcher 3 at the rear of a casing 1 in which front wheels 4, 4 and rear wheels 5, 5 are arranged on both left and right sides of the front and rear parts, the front wheels and the rear wheels are The catcher 3 is installed so that its vertical position can be changed and adjusted by operating a lever, and a suppressing roller 13 having a width approximately corresponding to the outer width interval of the rear wheels 5 is disposed below the bottom of the catcher 3 in a non-contact manner. The pressure roller 13 is supported by a roller support arm 10 that hangs down from the left and right sides of the catcher 3, and the roller support arm 10 is swung downward by a tension spring 17 within a range regulated by a stopper 18. A mowing mark suppression device for a mower, characterized in that it is dynamically energized.