JPH074132B2 - Weed removal equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a weed removing device for removing weeds from lawns and the like.

(Prior Art) Conventionally, in order to remove weeds from lawns and the like, methods such as spraying pesticides (herbicides) on lawns and the like have been adopted.

However, pesticides are not preferable because they cause environmental pollution. To remove weeds without using pesticides,
For example, weeds may be extracted one by one, but this has a problem that it takes a lot of time and labor.

In order to deal with such a problem, a method of removing weeds by electric discharge has been recently taken. This uses a weed removing device having a high voltage electrode, and a pulse high voltage or a direct current high voltage is applied between the high voltage electrode and the soil to remove the weed by spark discharge.

(Problems to be Solved by the Invention) However, in the conventional weed removing device, since the discharging portion (tip) of the high-voltage electrode is exposed to the outside, it touches the operator's body and causes injury. In addition to the danger, if water droplets or the like adhere to the surface of the weed removing device, for example, there is a risk of electric shock to the operator through the water droplets or the like.

In addition, since it is necessary to ground the ground wire to the soil each time it moves, it is troublesome and the shape of the discharge part (tip) of the high-voltage electrode cannot be changed appropriately according to the weeds. There is an inconvenience that it is bad.

In view of the above problems, it is an object of the present invention to provide a weed removing device with improved safety and workability.

(Means for Solving the Problem) In order to achieve the above object, the first weed removing device according to the present invention applies a pulsed high voltage or a direct current high voltage between the high voltage electrode and the soil. In a weed removing device that removes weeds by spark discharge, the high-voltage electrode is mounted inside a high-voltage generating stick made of an insulating material, and the tip of the high-voltage generating stick has a predetermined depth. A recessed recess is formed, and the tip of the high-voltage electrode is projected from the bottom of the recess in a range that does not reach the tip of the high-voltage generating stick.

A second weed removing device according to the present invention is the first weed removing device.
The spark generating adapters having various shapes are replaceably mounted in the recesses provided at the tip of the high voltage generating stick of the invention.

A third weed removing device according to the present invention is a weed removing device in which a pulsed high voltage or a direct current high voltage is applied between a high voltage electrode and soil to remove the weeds by spark discharge. The electrodes are mounted inside a high-voltage generating stick made of an insulating material, and an electricity-preventing member made of a conductor is provided near the tip of the high-voltage generating stick.

Further, a fourth weed removing device according to the present invention is a weed removing device configured to remove a weed by spark discharge by applying a pulsed high voltage or a direct current high voltage between a high voltage electrode and soil. The ground wire of the weed removing device is connected to a grounding shoe having a plurality of protrusions made of a conductor on the bottom.

(Operation) Therefore, in the first aspect of the invention, since the tip of the high-voltage electrode is located in the recess so that the tip of the high-voltage generating stick faces the tip of the stick for generating high voltage, the high-voltage electrode is operated. There is no risk of contact with the person's body.

Further, in the second aspect of the present invention, the shape of the discharging portion of the high voltage electrode can be appropriately changed according to the weeds by exchanging the spark generating adapter, so that workability is improved.

In the third aspect of the invention, the electric current due to the discharge of the high-voltage electrode flows into the electricity-relieving member, so that electric shock is avoided.

Further, according to the fourth aspect of the present invention, since the ground is grounded through the protrusion of the grounding shoe along with the movement of the worker, the labor of grounding the ground wire is saved.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of a weed removing device, and the weed removing device 1 is basically composed of a high voltage generating stick 2 and a high voltage generating device 6 mounted on a carriage 4. .

As shown in detail in FIG. 2, the high-voltage generating stick 2 is an elongated pipe-shaped stick made of an insulating material such as vinyl chloride and has a high-voltage electrode 8 described below embedded therein. The attached cable 10 is attached. In addition, a substantially columnar insulating material 12 is provided at the tip of the high-voltage generating stick 2, and the insulating material 12 is provided with a recess 14 that is recessed at a predetermined depth. Incidentally, 16 is a band for shoulder mounting, and 18 is a cable connecting the high voltage generating stick 2 and the high voltage generating device 6.

The high-voltage electrode 8 is an elongated rod-like member, and its base end is connected to a high-voltage generator 6 described below via a cable 18, and its tip is inserted substantially in the center of the insulating material 12, The insulating material 12 is projected from the bottom surface of the concave portion 14 in a range that does not reach the tip of the high voltage generating stick 2.

As shown in detail in FIG. 3, the high voltage generator 6 is composed of, for example, a power source (generator) 20, a transformer 22, and a high voltage pulse generating circuit 24. Incidentally, 25 is a switch for driving the weed removing device 1, and 27 is a ground wire.

In the high voltage generator 6, when the switch 25 is turned on, the high voltage that has been increased in voltage from the power source 20 via the transformer 20 is rectified into a direct current by the diode 26 of the high voltage pulse generation circuit 24, and the resistor 28 is turned on. The capacitor 30 is charged via this. Then, the capacitor 30 discharges the charged high voltage as a pulsed high voltage through the high voltage electrode 8. The electric field strength between the high voltage electrode 8 and the soil 34 due to this discharge is set to, for example, 10 kV / cm or more. Further, the ground wire 27 of the high voltage generator 6 is grounded to the soil 34 via a needle-shaped grounding member 32 provided in front of the truck 4.

An example of using the weed removing device 1 having such a configuration will be described with reference to FIG.

First, the needle-shaped grounding member 32 of the carriage 4 is embedded (inserted) in the soil 34 so that the ground wire 27 of the weed removing device 1 is grounded in the soil 34, and the tip of the high-voltage generating stick 2 is, for example, 3 cm. Weed 3 protruding from lawn (not shown) at a distance
Move closer to face to face 6. Then turn on switch 25
To As a result, a spark discharge is generated between the tip of the high-voltage electrode 8 of the high-voltage generating stick 2 and the soil 34 via the weed 36, and the weed 36 has its leaf, stem and root cells destroyed. Therefore, it is removed from the lawn. Since the discharge current diffuses in the soil 34 due to such discharge, the vicinity of the root of the weed 36 becomes a high electric field strength region, and the sterilization of the soil is simultaneously performed.

Thus, in the weed removing device 1, as described above, the tip portion of the high voltage electrode 8 is formed so that the tip portion of the high voltage electrode 8 faces the tip portion of the high voltage generating stick 2 from the bottom surface of the depression 14 of the insulating material 12. Since it is located inside, the tip of the high-voltage electrode 8 is protected in the recess 14 and does not come into contact with the operator's body.
It is designed to prevent injuries.

Next, an embodiment of the weed removing device according to the second invention will be described.

The feature of the weed removing device according to the second invention is that, as shown in FIG. 2, a screw groove 40 is provided in the circumferential direction of the recess 14 of the insulating material 12, and the recess 14 having the screw groove 40 is provided. For example, spark generating adapters 42 and 44 having the shapes shown in FIGS. 5 (a) and 5 (b).
This is because I was able to replace it. The other structure is the same as that of the weed removing device according to the above-mentioned first invention, and hence the description thereof is omitted below.

The spark generating adapters 42, 44 are composed of screwing portions 46, 48 provided with screw grooves and spark generating terminals 50, 52 having base ends inserted in the screwing portions 46, 48. Spark generation terminal 50
Is shaped like a wide knife and the other spark-generating terminal
52 is formed in a long needle shape protruding forward.

The spark generating adapters 42, 44 are mounted by screwing the screwing portions 46, 48 into the recesses 14 of the insulating material 12,
The base is connected to the tip of the high voltage electrode 8.

By appropriately replacing the spark generating adapters 42 and 44 according to the shape of the weeds to be removed, the discharge area of the high-voltage electrode 8 can be changed, and the workability of removing the weeds is improved. . The shape of the spark generation terminal of the spark generation adapter is not limited to the shape described above, and may be set arbitrarily.

Next, an embodiment of the weed removing device according to the third invention will be described.

A feature of the weed removing device according to the third aspect of the present invention is that a ring-shaped antistatic member 54 is provided near the tip of the high-voltage generating stick 2 as shown in FIG. The other structure is the same as that of the weed removing device according to the above-mentioned first invention, and hence the description thereof is omitted below.

The electricity-preventing member 54 is made of a conductive material,
It is connected to the ground wire 27 of the weed removing device 1 through an electric wire 56 arranged in the high-voltage generating stick 2 and grounded to the soil.

The electricity-saving member 54 prevents the high voltage discharged from the high-voltage electrode 8 from electric shock to the operator.
That is, even if water droplets or the like adhere to the surface of the high-voltage generating stick 2, the current due to the high voltage discharged from the high-voltage electrode 8 flows into the electricity-preventing member 54, and cannot reach the operator's hand. , Electric shock is avoided.

Next, an embodiment of the weed removing device according to the fourth invention will be described.

The feature of the weed removing device according to the fourth invention is that, as shown in FIG. 6, the ground wire 27 of the high voltage generator 6 is not connected to the needle-shaped grounding member 32 of the trolley 4 but is used for grounding as described below. It is connected to shoes 58. The other structure is the same as that of the weed removing device according to the above-mentioned first invention, and hence the description thereof is omitted below.

The grounding shoe 58 is in the shape of boots, and has a protrusion 62 made of a plurality of conductors provided on the bottom through a conductive plate 60. The conductive plate 60 is connected to the ground wire 27 of the high voltage generator 6.
Are connected to each other, and the ground wire 27 of the high voltage generator 6 and the respective projections 62 are electrically connected via the conductive plate 60.

That is, when the worker wears the grounding shoe 58, each protrusion 62 of the grounding shoe 58 pierces into the soil 34 as the worker moves, so that the ground wire 27 of the high-voltage generator 6 is soiled. It is grounded to 34. As a result, the worker attaches the ground wire 27 of the high-voltage generator 6 to the soil 34 with each movement.
Since it is not necessary to ground it, the workability of the worker is improved.

(Effects of the Invention) As described above, according to the first invention, the tip of the high-voltage electrode is surrounded by the recess, so that the tip of the high-voltage electrode touches the body of the operator. There is no danger and safety is improved.

According to the second aspect of the invention, since the interchangeable spark generation adapter is attached to the tip of the high-voltage generation stick, the discharge area and the like can be changed as appropriate, and the work of removing weeds can be performed. It is possible to improve the property.

According to the third aspect of the present invention, since the electricity blocking member is provided in the vicinity of the tip of the high voltage generating stick, the current due to the discharge of the high voltage electrode flows into the electricity blocking member, so that electric shock to the worker is avoided, The safety is improved as in the first invention.

Further, according to the fourth invention, the ground wire of the weed removing device is connected to the protrusion provided on the grounding shoe worn by the worker, so that the ground wire is grounded to the soil as the worker moves. As a result, it is possible to save the conventional labor which is required to ground the ground wire every time the vehicle is moved, and work efficiency is improved.

[Brief description of drawings]

FIG. 1 is a schematic view of a weed removing device, FIG. 2 is a detailed view of a stick for high voltage generation, FIG. 3 is a circuit diagram of the high voltage generating device, and FIG. 4 is a diagram illustrating an example of use of the weed removing device. , Fifth
FIG. 6 is a plan view of the spark generating adapter, and FIG. 6 is an explanatory view of the grounding shoe. 1 ... weed removing device, 2 ... stick for high voltage generation,
4 ... Car, 6 ... High-voltage generator, 8 ... High-voltage electrode, 14 ... Recess, 27 ... Ground wire, 34 ... Soil, 36 ...
Weeds, 42,44 ... Adapter for spark generation, 54 ... Antistatic member, 58 ... Grounding shoes, 62 ... Protrusions.

Claims (4)

[Claims] 1. A weed removing device which removes weeds by spark discharge by applying a pulsed high voltage or a direct current high voltage between a high voltage electrode and soil, wherein the high voltage electrode is made of an insulating material. It is mounted inside the voltage generating stick, and a concave portion that is recessed at a predetermined depth is formed at the tip of the high voltage generating stick so that the tip of the high voltage generating stick does not reach from the bottom surface of the concave. A weed removing device, characterized in that the tip of the high-voltage electrode is projected in a range. 2. The weed removing device according to claim 1, wherein spark generating adapters having various shapes are replaceably mounted in a recess provided at the tip of the high voltage generating stick. 3. A weed removing device comprising applying a pulsed high voltage or a direct current high voltage between a high voltage electrode and soil to remove weeds by spark discharge, wherein the high voltage electrode is made of an insulating material. A weed removing device, characterized in that the weed removing device is mounted inside a voltage generating stick, and an electricity-saving member made of a conductor is provided in the vicinity of the tip of the high voltage generating stick. 4. A weed removing device which removes weeds by spark discharge by applying a pulsed high voltage or a direct current high voltage between a high voltage electrode and soil, wherein the ground wire of the weed removing device is a bottom part. A weed removing device, characterized in that the weed removing device is connected to a grounding shoe having a plurality of protrusions made of a conductor.