JPH0454729Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field The present invention is a lawn root cutting machine that is constructed by arranging a drive wheel, a root cutting blade, and a roller in order from the front of the machine. This relates to a rotary cover that is installed to cover the outside of the rotation area of the rotary wheel.

(b) Prior Art A cover structure for a reversing rotary tilling device installed on a tractor is known as something similar to the above-mentioned rotary cover (for example,
(See Publication No. 44205).

In the conventional rotary cover of a reversing rotary tilling device, a front cover whose lower end becomes a curved ground sled part is attached to the front part of the rotary cover body so as to be movable up and down. , a part of the reversing gauge wheel installed in the reversing rotary tilling device itself is inserted into the position, and the curved surface of the grounding sled of the front cover is always kept almost in line with the outer circumferential part of the gauge wheel, and the ground is grounded. It is configured to move up and down in response to the unevenness of the ground, and a large gap is provided between the notch and the gauge wheel to allow the freely rotating gauge wheel to roll and move up and down without any trouble. Ta.

(c) Problems to be solved by the invention Conventional rotary covers have the above-mentioned configuration and are equipped with sled parts that are always in contact with the ground, so they do not have the function of suppressing the scattering of cultivated soil forward by the reversing rotary. However, the curved surface of the grounding sled of the front cover was always located almost along the outer circumference of the gauge foil, and there was a large gap between the notch and the gauge foil, so it was difficult to use the scraper against the gauge foil. There is a problem that the smooth rotation of the free-rotating gauge wheel is likely to be hindered due to the adhesion or jamming of foreign matter such as mud, and the lower part of the front cover is curved due to contact with the ground. Because it was an old product, it could not be used with a front cover to double as a scraper for the drive wheels of a tractor equipped with a reversing rotary tiller.

Therefore, the present invention was implemented with the aim of obtaining a rotary cover structure that functions well as a scraper for the drive wheels of the machine while also fulfilling the function of suppressing the forward scattering of dirt and sand by the reversing rotary. be.

(d) Means for solving the problem That is, the rotary cover structure according to the present invention includes a root cutting blade 22 that rotates in the opposite direction to the drive wheel 10 at the rear of the drive wheel 10, and the drive wheel 10, In the root cutting machine in which the root cutting blade 22 and the roller 32 are arranged, the front part of the cover that covers the outside of the rotation range of the root cutting blade 22 is located at a part separated from the ground 18 and the rear of the driving wheel 10 is located. A concave notch 26 is formed in the extending portion 24, and the left and right edges and the rear edge of the concave notch 26 are driven. It is characterized in that it is placed close to the rear left and right side surfaces and the rear peripheral surface of the wheel 10 and also serves as a scraper for the drive wheel 10.

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

The root cutter shown in FIGS. 1 and 2 includes a drive wheel 10 that is made to be easy to run on the lawn, an engine 12 disposed above the drive wheel 10, and a control handle 14. The transverse drive shaft 16 is rotatably driven by the power from the engine.

The drive wheels 10 have a low pressure and a small tread pattern so that they can easily run on the ground 18 covered with grass.

Power from the engine 12 is transmitted to the lateral drive shaft 16 through a sprocket, chain, etc. (not shown) in the case 20, so that the lateral drive shaft 16 is rotated in a direction different from that of the drive wheels 10. A root cutting blade 22 is fixed to the horizontal drive shaft 16.

Note that the reason why the lateral drive shaft 16 is rotated in a direction different from that of the drive wheels 10 is because the body of the root cutter rotates the root cutting blade 2.
This is to prevent the fuselage from collapsing due to the rotation of the fuselage 2 and to prevent the rear part of the fuselage from being lifted up.

The root cutting blade 22 is fixed with a screw or the like (not shown) and is detachable. That is, it is necessary to change the blade depending on whether the root is to be cut to remove shavings or the like, and when the root is to be cut to the edge of a bunker.

The blades used for removing sandstones, etc. have a structure in which multiple rectangular blades are arranged and fixed radially around a disk, and the blades used for cutting the edges of bunkers are shaped like a disk. It has a structure similar to a saw blade with a hatchet blade with a bent tip attached to one side (not shown).

As shown in FIG. 2, the outside of the rotation area of the root cutting blade 22 fixed to the lateral drive shaft 16 is connected to the cover 36 extending from the machine rod 34 to the left and right sides.
covered by.

The front part of the cover 36 covers between the drive wheel 10 and the root cutting blade 22, and also covers the space between the drive wheel 10 and the root cutting blade 22.
The size and shape are such that it partially covers 0.

As shown in FIG. 1, the front part of the cover is located at a part spaced apart from the ground 18 and extends forward 2 so as to cross the rear peripheral part of the drive wheel 10.
4, and the front extension part 24 is formed with a recessed part 26 which is open to the front.

The left and right edges and the rear edge of the recessed notch 26 are brought close to the rear left and right side surfaces and the rear circumferential surface of the drive wheel 10, which are located in the recessed notch 26.

The front extension part 24 of the cover may be configured to be divided into two parts on the left and right with the center line as a border as shown in FIG. 2, but it may also be configured as an integral part as shown in FIG. 4.

Further, when the driving wheels 10 are twin wheels, the fifth
As shown in the figure, two recessed portions 26 are provided in accordance with the general idea.

Furthermore, as shown in FIG. 3, the cover extension part 24 can be formed by using a metal plate 28 as a base material and covering the upper surface with a synthetic resin sheet 30 having a wider area. This makes it difficult to damage other things, including the human body, and also improves the function of the scraper for scraping off soil adhering to the drive wheels.

Reference numeral 38 denotes a bolt/nut for removably fixing the front extension part 24 to the cover when the front extension part 24 is configured separately from the cover 36.

(f) Effects of the invention As described above, the rotary cover structure of the root cutting machine in the present invention includes the root cutting blade 22 that rotates in the opposite direction to the driving wheel 10 behind the driving wheel 10.
In order from the front of the machine: drive wheel 10, root cutting blade 22,
In the root cutting machine equipped with the roller 32, the front part of the cover that covers the outside of the rotation area of the root cutting blade 22 is arranged so as to cross the rear peripheral part of the drive wheel 10 in a part separated from the ground 18. Extends forward to 24
Then, a recessed part 26 that is open toward the front is formed in the extending part 24, and the both side edges and the rear edge of the recessed part 26 are connected to the rear left and right side surfaces and the rear circumference of the drive wheel 10. Since it is placed close to the surface and also serves as a scraper for the drive wheel 10, it functions to prevent soil, etc., from being blown forward by the reversing root cutting blade 22 to the side of the machine. At the same time, a recessed part 26 located close to the rear left and right side surfaces and the rear peripheral surface of the drive wheels on the side of the fuselage.
The side edges and the rear edge of the drive wheel 10 function well as scrapers for the drive wheel 10, and the drive wheel has a good property that there is little risk of soiling the lawn by running with soil attached to the drive wheel. I was able to start driving.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of a root cutting machine equipped with a rotary cover according to the present invention, Fig. 2 is a partial plan view mainly showing the cover portion of the root cutting machine, and Fig. 3 is a - Enlarged cross-sectional view cut along the line, No. 4
The figure is a partial plan view showing a modification of the present invention, and FIG. 5 is a partial plan view showing another modification. DESCRIPTION OF SYMBOLS 10... Drive wheel, 18... Ground, 22... Root cutting blade, 24... Extension part, 26... Recessed part, 32
……roller.

Claims (1)

[Scope of utility model registration request] The root cutting machine is equipped with a root cutting blade 22 that rotates in the opposite direction to the driving wheel 10 at the rear of the driving wheel 10, and the driving wheel 10, the root cutting blade 22, and the roller 32 are arranged in order from the front of the machine body. The front part of the cover that covers the outside of the rotation range of the blade 22 is extended 24 forward so as to cross the rear circumferential part of the drive wheel 10 at a part separated from the ground 18. A recessed part 26 with an open front end is formed in the recessed part 26 , and the both side edges and the rear edge of the recessed part 26 are brought close to the rear right and left side surfaces and the rear peripheral surface of the driving wheel 10 . A rotary cover structure for a root cutting machine that is characterized by doubling as a scraper.