JP2500862Y2 - Weeder - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a weeding machine for cutting weeds growing on both sides of a ridge on which a crop is planted.

[0002]

2. Description of the Related Art Conventionally, a weeder or a rotary blade equipped with a willow blade is used for cutting weeds that grow on the sides of ridges on which crops are planted, especially fine weeds having a height of about 5 cm or less. The weeder provided is used.

[0003]

[Problems to be solved by the invention] In a weeder equipped with a willow blade, the blade pushes up the soil and scrapes it out. Therefore, when the blade is deeply inserted into the soil, the soil scraped from the side of the blade is There was a problem that it was buried too close to the root, so it was necessary to be careful to insert the blade shallowly into the soil and moderately insert it. Also, those equipped with a rotary blade can efficiently mow the grass that has grown between the ridges by rotating the blade,
The rotation of the blade may cut the root of the crop,
Therefore, it was difficult to weed the roots of crops.

An object of the present invention is to provide a weeding means capable of efficiently cutting relatively fine weeds growing on the side of a ridge where a crop is planted, without damaging the crop.

[0005]

In order to solve the above problems, the weeding machine of the present invention mounts and supports a plurality of rotary blades on the front part or the rear part of a self-propelled vehicle, so that the self-propelled vehicle travels. A weeding machine for mowing weeds on the ground by the rotary blade, wherein each rotary blade is formed in a substantially conical shape or a truncated cone shape, and is configured by protruding spiral scraping blades along the outer peripheral surface thereof,
A plurality of the rotary blades are arranged side by side in the width direction of the self-propelled vehicle at intervals, and the rotary blades are axially supported with their small diameter side ends facing the running direction, and a pair of adjacent two are provided. The rotary blades are supported in a substantially C-shape in a plan view in which the large-diameter side ends are widely opened at a predetermined interval.

[0006]

According to the above-mentioned means, two rotary blades formed in the shape of a cone or a truncated cone are paired to have a predetermined interval in the width direction of the self-propelled vehicle, that is, an interval corresponding to the width of the ridge on which the crop is planted. And is rotatably supported with the tip on the small diameter side facing forward in the traveling direction. The pair of two rotary blades are attached in a substantially C-shape in plan view with the large diameter side base end being wide open. When the above-mentioned ridges are sandwiched by both rotary blades from both sides, the side faces of both rotary blades are respectively ridged. It is applied along the slope of both sides of the. Then, when each rotary blade is rotated along with the traveling of the self-propelled vehicle, the spiral scraping blade protruding on the peripheral surface of the rotary blade is rotated, and the weeds growing on both side surfaces of the ridge are appropriately moved from the ground surface. Scraping at a depth, the weeds and soil scraped off are moved along the spiral blade and scraped out from the large-sized side end of the rotary blade toward the outside of the ridge.

[0007]

Since the present invention is as described above, a pair of conical or frustoconical rotary blades are inevitably addressed according to the shapes of both side surfaces of the ridge, Further, by rotating the rotary blade as the traveling vehicle travels, the spiral scraping blade can scrape the soil on both side surfaces of the ridge at an appropriate depth and scrape it out of the ridge together with the weeds. Therefore, unlike the conventional one, the rotary blade is applied to both sides of the ridge in an optimal state without paying attention to the insertion depth of the blade with respect to the surface of the ridge. It is possible to scrape the entire surface at an appropriate depth to ensure reliable and efficient weeding near the root of the crop. Further, since the rotary blade described above is maintained in a state of being applied to the side surface of the ridge, there is no fear of cutting the root of the crop planted on the top of the ridge by the scraping blade.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The weeding machine shown in FIGS. 1 and 2 is mounted and supported on the front part of a self-propelled vehicle a that uses a mowing car or a tractor on a golf course, and is provided with four rotary blades 1. Each of the rotary blades 1 described above is formed in a truncated cone shape as shown in FIGS. 3 and 4,
A spiral scraping blade 3 is provided so as to project along the outer circumference thereof. The scraping blade 3 includes a steel wire 3a that is spirally wound around the outer circumference of the rotary blade,
It is composed of a plurality of claws 3b attached along the steel wire 3a. The rotary blade 1 has a rotary shaft 1a integrally projecting from a large-diameter side base end thereof rotatably supported by a support frame 2 horizontally supported at the front part of the self-propelled vehicle a. Thus, the small-diameter side end portion is supported substantially horizontally with the end portion facing forward. As shown in FIG. 1, the above-mentioned four rotary blades 1 are arranged at intervals with respect to the support frame 2 to form two rotary blades 1 on the right side and two rotary blades on the left side, respectively. Two rotary blades 1 each are attached with an inclination angle such that the base end on the large diameter side has a large open C-shape in plan view. Further, the pair of rotary blades 1 are arranged according to the width of the ridge b as shown in FIG. 3, and the rotary blades 1 are configured to sandwich one ridge b. The scraping blade 3 protrudingly provided on the outer periphery of the rotary blade 1 has a spiral strip 13 having a required height like the rotary blade 13 shown in FIGS. 5 and 6.
The protrusion 13b may be formed along the edge of a. However, it is important that the above-mentioned scraping blade 3 has an appropriate height and is linearly continuous in order to send scraped soil and weeds toward the large-diameter side end.

On the other hand, the support frame 2 for supporting the rotary blades 1 is a box-shaped frame extending in the width direction of the self-propelled vehicle a, and an arm provided at the center thereof is provided with respect to the support mechanism of the self-propelled vehicle a. By mounting the rotary blade 1, the rotary blade 1 is supported so that it can be hydraulically driven up and down. A drive gear 4a and a drive chain 4b for transmitting the drive force received from the self-propelled vehicle a are provided inside the frame 2 described above, and the rotary blades 1 are driven by the drive force transmitted by these drive mechanisms 4. It is designed to rotate.

L-shaped arm plates 5 are attached to both ends of the support frame 2 so as to project forward, and a holding wheel 6 is provided at each lower end of the arm plates 5.
The holding wheel 6 is for always keeping the height of the support frame 6 constant from the ground, and as shown in FIGS. 7 and 8, the support shaft 6a is formed along a guide groove 5a formed along the arm plate 5.
Is movably supported so that its height can be adjusted stepwise. The drive mechanism of the rotary blade 1 may be configured to be directly rotated by the hydraulic motor 8 driven by the hydraulic pressure supplied from the self-propelled vehicle a, as shown in FIGS. 9 and 10.

When weeding on the side surface of the ridge b using the weeding machine constructed as described above, the traveling vehicle a is moved to the ridge b.
The rotary blades 1 are guided in parallel with, and the rotary blades 1 are aligned by moving the frame 2 along both sides of the ridge b. As a result, the rotary blade 1 is arranged so as to sandwich the ridge b from both sides as shown in FIGS. At this time, since both rotary blades 1 are provided with an outer shape of a truncated cone and an angle of inclination of C shape in a plan view, their side surfaces are inevitably applied along the inclinations of both side surfaces of the ridge b. Then, when each rotary blade 1 is rotated along with the traveling of the self-propelled vehicle a, the spiral blade 3 protruding on the peripheral surface of the rotary blade 1 is rotated and the weeds growing on both side surfaces of the ridge b are rotated. Is relatively shallowly scraped from the surface of the earth, and the weeds and soil scraped off are moved by the rotation of the spiral scraping blade 3, and weeding is carried out while scraping from the large side end of the rotary blade 1 toward the outside of the ridge b. Done.

Thus, according to the above weeding machine, the rotary blade 1 is always applied to the side surface of the ridge b in an optimal state, and the spiral scraping blade entirely covers the side surface of the ridge b at an appropriate depth. It is possible to completely weed up to near the root of the crop. Further, since the rotary blade 1 described above is maintained in a state of being applied to the side surface of the ridge b as shown in FIG. 4, when the traveling vehicle a is traveling along the ridge b, the rake blade 3 is used. It does not cut the root of the crop planted on the top of b.

[Brief description of drawings]

FIG. 1 is a plan view showing a state in which a weeder according to the present invention is attached to a self-propelled vehicle.

FIG. 2 is a side view of the weeder.

FIG. 3 is a front view showing a rotary blade.

FIG. 4 is an enlarged front view of the rotary blade.

FIG. 5 is a plan view showing a rotary blade provided with a scraping blade constituted by a spiral strip.

FIG. 6 is a rear view showing the rotary blade.

FIG. 7 is a front view showing a supporting portion of the holding vehicle.

8 is a sectional view taken along line xx in FIG.

FIG. 9 is a plan view showing a state in which a weeding machine for rotating a rotary blade by a hydraulic motor is attached to a self-propelled vehicle.

FIG. 10 is a side view of the device.

[Explanation of symbols]

 a ... self-propelled vehicle 1 ... rotary blade 1a ... rotary shaft 3 ... scraper blade

Claims (1)

(57) [Scope of utility model registration request] 1. A weeding machine which mounts and supports a plurality of rotary blades on a front portion or a rear portion of a self-propelled vehicle, and mows weeds on the ground by the rotary blades as the self-propelled vehicle travels. The blade is formed in a substantially conical shape or a truncated cone shape, and spiral scraping blades are provided so as to protrude along the outer peripheral surface thereof, and a plurality of rotary blades are arranged side by side in the width direction of the vehicle. The rotary blades are axially supported with the small diameter side ends of the blades facing the running direction, and the pair of adjacent two rotary blades are largely opened at the large diameter side end at a predetermined interval . A weeding machine supported in a substantially C-shaped plan view.