JPS5828201A - Apparatus for removing weed between furrow utilizing compressed air - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a weeding device that uses air pressure, and more particularly to an interplant weeding device that effectively weeds weeds growing near crops planted in a field.

Traditionally, intertillage weeding has the effect of promoting weathering and decomposition of soil and fertilizers, promoting the growth of crops, and improving aeration and water permeability by breaking up solidified soil due to soil pressure from working machinery. It is important for the cultivation management of crops such as As weeding means during intercultivation, physical or chemical means, such as cutting and damaging weeds with a rotating body with a cutting blade, or spraying an appropriately selected herbicide, are in practical use.

However, when using a rotating body with cutting blades, weeds that grow in the furrows can be treated, but weeds near the periphery of a single crop or between crops can not be treated or are difficult to treat due to the structure of the device.
In addition, the method of spraying herbicides can be expected to be quite effective if the pesticides are selected correctly, but the amount of pesticides that are sprayed tends to be large, and in recent years there has been a risk that pesticides may cause pollution. The reality is that there is a strong need for improvement measures.

In view of the above circumstances, the inventor conducted intensive research and came up with a method for weeding using air pressure, which involves blowing air at a predetermined pressure through a nozzle when weeds on the field surface germinate or shortly after germination. This led to the discovery that it is possible to expose weeds on the field surface without damaging cultivated plants, or to damage the leaves and cause them to wither, leading to the development of the device of the present invention. That is, the device of the present invention has a configuration in which a soft pipe is attached to a moving aircraft body, a ventilation hose is connected to the upper end of the soft pipe, and the other end of this hose is connected to the exhaust side of a blower device provided on the aircraft body. This allows the pressurized air generated by the blower to be blown onto the field from the nozzle.

To specifically explain the present invention with reference to the attached drawings, reference numeral 1 indicates a machine frame that extends in the lateral direction with respect to the progress of the machine body, and the machine frame 1
A towing fitting 22 is provided in front of the vehicle, and the vehicle is towed by a tractor or the like (not shown). In addition, a large number of plates 4 are arranged on the front side of the machine frame 1 at intervals of ridges (A), fixed vertically by U ports 3, 3 as shown in Fig. A hollow support tube 2 is fixed in the vertical direction, an air blowpipe 5 is inserted into the support tube 2, and the air blowpipe 5 is inserted into the support tube 2 and fixed in a freely attachable position using a push bolt 6 provided on the support tube 2. Then, a pair of legs 11.11 is fixed to the center of the machine frame 1 and extended toward the rear.
A base 12 is fixed horizontally thereon, and the blower l is placed on it. The blower device 7 includes a small blower 8, a drive device 9, and a manifold 10 connected to the outlet of the blower 8 via a connecting member 15.
For example, Hitachi Portex Blower (product name,
Air volume per minute 4.2-1 Wind pressure 1200111111H20)
As the device 9 for driving the blower 8, for example, the rotation taken out from the PTO of the tractor (not shown) may be sped up and used, or a hydraulic valve built into the tractor (not shown) may be used. 2) Hydraulic pressure from hose 24
You can take it out and supply it to a hydraulic motor for use.
Means such as providing an independent engine may be used.

In this way, the pressurized air produced by the blower device 1 is fed to the manifold 10, and a plurality of hoses 14 are attached to the manifold 10, and the other ends of the hoses 14 are connected to the upper part of the soft pipe 5. The water is ejected onto the ground through a nozzle 16 fixed below the soft pipe 5. At this time, the soft tube 5
However, it may be simply installed in a direction perpendicular to the ground.
It may be provided diagonally downward, or it may be of an oscillating type.

Next, a sub-frame 18 is arranged on the machine frame 1 so as to be located between the ridges, fixed with a mounting bracket 13 so as to be adjustable in its mounting position, and extended rearward. A soil blade 23 is fixed to the end of the soil blade 23, and an arm bar 1 is fixed to the center of the sub-frame 18.
9 is installed parallel to the machine frame 1, and the intermediate tiller blade 17 is installed through the mounting rod 20.
to be fixed. At least two gauge wheels 21 are fixed below the machine frame 1 to maintain the machine frame 1 at a predetermined height.

The device of the present invention is constructed as in the above example, but the nozzle 16 can be a single tip, or an expanded one, and a soft tube 5 can be used. The installation may also be done by making the machine frame 1 hollow, attaching it directly to it, blowing air directly into it from the blower, and sliding the nozzle 16 up and down inside the soft tube 5. This kind of modification may be modified as appropriate based on the technique of weeding using air pressure according to the present invention.

Next, an example of how the device of the present invention is used will be described.

The device of the present invention is particularly effective for plants with shallow roots such as dandelions, white vines, and buds that grow to a height of 5 to 10 cm above the height of the germination level. It is less effective against perennial plants such as Daio.

In addition, a certain level of physical strength is required depending on the type of crop;
Crops that have relatively strong stems and leaves from the beginning of germination, such as root vegetables and eastern legumes, are suitable, and especially in the case of crop seedlings prepared in Peno Kuichi Pot (trademark), they are suitable for protecting the seedlings without any problems.

An example of a test conducted on beet seedlings grown in paper pots is as follows.

The setting conditions were: Beet seedlings; 11th seedling after transplantation, grown using paper mats (hexagonal prism with diagonal diameter 2 cm x length 1, 0.3 cm). Seedling height 49±14u0 Type of weed; Mainly clumps, average plant height 41nTIL (
Maximum 11, minimum 1-).

Air blower; discharge side static pressure 120011+1H20, air volume 4
．． 2'/min.

Nozzle: Discharge port cross section 3mi x 90m rectangle.

Air outlet height approximately 8cm above ground level.

Traveling of the aircraft: 0.5m7 with the nozzle outlet directly above the surface
Progress of seconds.

Field surface 4o with plant spacing 22-5cm 1 furrow width 6ocrfL
The area was divided into two, a weeded area and an untreated area, and weeding treatment was carried out. Four days after the treatment, weed growth was investigated.
As shown in the table, the weeding rate calculated from the number of weeds in the treated area compared to the untreated area was 84.47, which was extremely good, and no damage to the beet surface was observed.

In addition, as a result of various tests of air volume, 4±0.5 air volume was found to be appropriate; below this, the weeding effect is weak, and above this, the air pressure is too strong to withstand use.

Table 1: However, the average number of weeds per 15 m wide x 1 m long area, centering on crop seedlings, is shown.

As mentioned above, the device of this invention has an extremely simple device structure consisting of a blower, blowing snow, and a nozzle, but its usability is very effective, and it is similar to the conventional weeding machine that removes weeds by using a rotary blade that is grounded. Differently, since it utilizes pressurized air and does not have a grounding member for weeding, it has made it possible to effectively weed around the crop 'gJlf1', which was conventionally considered difficult to weed. However, as mentioned above, it is not suitable for perennial plants such as dandelions, but even in this case, the pressure air can be used to make the roots work much more effectively. Even when herbicides are used together in this way, there is little risk of causing problems such as pesticide pollution, as the chemical release is smaller than when simply using herbicides in the past. . When a herbicide is used in combination, a separate sprayer may be used, but it can also be used by incorporating it into the apparatus of the present invention.

When using the device of this invention, it is most effective to position the nozzle outlet directly above the crop seedling row (a) as in the test example above, but depending on the situation, The nozzle may be positioned so that the pressurized air is blown onto the seedlings from the side or oblique side.

As described above, the weed removal device of the present invention can particularly effectively remove weeds around crops and between plants, and is extremely useful for crop cultivation management.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an example in which the device of the present invention is incorporated into an intertill processing machine, Fig. 2 is a front view of Fig. 1, Fig. 3 is a side view of Fig. 4, and Fig. 4 is a blizzard. It is a drawing explaining a support state.

Claims (2)

[Claims] (1) An interplant weeding device that utilizes air pressure, characterized in that a blowing snow is fixed to a traveling aircraft so that its mounting position can be adjusted, one end of the blowing snow is provided with a nozzle, and the other end is communicated with the exhaust side of a blower. (2) An interplant weeding device using air pressure according to claim 1, characterized in that the direction of air blowing from a nozzle provided at one end of a snowstorm can be changed.