JP2633751B2 - Weed removal sterilizer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weed removing and sterilizing apparatus for removing weeds from fields and lawns and sterilizing the soil.

[0002]

2. Description of the Related Art Conventionally, to remove weeds from lawns and the like, it is common to spray a herbicide on the lawns and the like, and to disinfect soil, it is common to spray a fungicide. It is.

[0003] However, spraying of pesticides such as herbicides and fungicides is not preferable because it may cause environmental pollution and adversely affect the human body. On the other hand, weeds can be removed one by one in order to remove weeds without using pesticides, but this has the disadvantage of requiring a great deal of time and labor.

In recent years, as disclosed in Japanese Patent Application Laid-Open No. 3-83534, a pulsed high voltage, a DC high voltage or an AC high voltage is applied between a high voltage electrode and the soil to generate a spark discharge. Weed removal and disinfection equipment has been developed that kills and removes the weeds by the spark discharge and sterilizes the soil by setting the soil near the roots of the weeds subjected to the spark discharge to a high electric field strength region. ing.

[0005]

However, Japanese Patent Laid-Open No. 3-8 / 1990
In the conventional weed removing and disinfecting apparatus disclosed in Japanese Patent No. 3534 and the like, if water droplets or the like adhere to the periphery of the high-voltage electrode, there is a risk that the worker may get an electric shock.

[0006]

[0007]

[0008]

A high voltage generator and a high voltage electrode connected to the high voltage generator are provided, and a pulsed high voltage or a direct current high voltage or a high voltage is applied between the high voltage electrode and the soil. In a weed removal and sterilization apparatus that sterilizes soil by applying an AC high voltage to remove weeds by spark discharge and setting the soil near the roots of the weeds to a high electric field strength region, A high-voltage protective suit to be worn was provided, and a connection portion for connecting a power supply of the high-voltage generator and the high-voltage electrode was provided to the high-voltage protective suit.

[0009]

[0010]

[0011]

[Action] For the connection between the power supply and the high voltage electrode of the high voltage generator is performed via a connection portion provided to the high voltage protective clothing,
Workers always wear high-voltage protective clothing, which further enhances safety during work.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.
You. FIGS. 1 to 4 show the construction of a weed removing and sterilizing apparatus.
It is made. First, a trolley 1 that travels when the worker pushes it is provided. The trolley 1 has a high-voltage generator 2 mounted thereon. As shown in FIG. And a high-voltage pulse generating circuit 5. The high-voltage pulse generating circuit 5 includes a diode 6 connected to the transformer 4, a capacitor 8 connected in parallel to the diode 6 via a resistor 7, a charging terminal 9 and a rotating terminal 10 and a discharge terminal 12 connected in parallel to the capacitor 11. The cart 1
Is provided with a needle-like grounding member 13 that can be inserted into and removed from the ground. The needle-like grounding member 13 is connected to a ground wire 14 of the high-voltage generator 2.

Next, an elongated pipe-shaped stick 15 made of an insulating member such as vinyl chloride is provided, and a cable 17 having a high-voltage electrode 16 embedded therein is mounted inside the stick 15. The base of the high-voltage electrode 16 has an electric wire 19 disposed in a cable 18 connecting the carriage 1 and the stick 15.
And the other end of the electric wire 19 is connected to the high voltage generator 2. In addition, the stick 15
A substantially cylindrical insulator 20 is fixed to the tip of
The tip of the high voltage electrode 16 is inserted through the center of the insulator 20.

An insulator 21 for increasing the surface leakage distance of the current is integrally formed on the outer periphery of the tip 15 on the distal end side. Stays 22 and 23 which are located and are earth members formed by a conductive member are fixed. A pair of rods 24, which are earth members formed of conductive members, are slidably attached to the stays 22 and 23 along the axial direction of the stick 15.
A spring 25 biasing in the direction of sliding toward the distal end of the rod 24 is mounted between the stay 23 and the distal end of the rod 24. In a normal state where the spring 25 is not compressed, the distal end of the rod 24 is It extends from the tip of the stick 15. Further, the stays 22 and 23 and the rod 2
A cover 26 formed of an insulating member covering the cover 4 is fixed, and an insulator 27 for extending the surface leakage distance of current is integrally formed on the outer periphery of the cover 26. An electric wire 28 is provided to pass through the stick 15 and the cable 18. One end of the electric wire 28 is connected to the stay 22, and the other end of the electric wire 28 is connected to the needle ground member 13. I have.

An outer peripheral portion of the stick 15 is provided with a gripper 29 for gripping the stick 15. The gripper 29 is provided with two power switches 30 and 31 of the high-voltage generator 2. Is provided. One power switch 30 is a switch that is mainly turned on and off by the thumb, and the other power switch 31 is a switch that is turned on by the index finger when the grip portion 29 is gripped. Further, the carriage 1 is provided with a main power switch 32 of the high voltage generator 2.

First, a description will be given of a mechanism in which spark discharge is performed from the high voltage electrode 16 in such a configuration. Main power switch 32 and power switches 30, 31
Is turned on, the AC voltage from the AC generator 6 is increased in the transformer 4, and the increased high voltage is rectified to DC by the diode 6 of the high voltage pulse generation circuit 5,
The capacitor 8 connected via the resistor 7 is charged.
When the voltage charged in the capacitor 8 reaches a predetermined voltage,
When the gap between the charging terminal 9 and the rotating terminal 10 is short-circuited, the capacitor 11 is charged. When the voltage charged in the capacitor 11 reaches a predetermined voltage, the rotating terminal 10 rotates to a position facing the discharging terminal 12. This state is a state in which spark discharge can be performed from the high-voltage electrode 16. The tip of the stick 15 is brought closer to the ground, and the distance between the tip of the high-voltage electrode 16 and the weed 33 is reduced. When the voltage falls below the predetermined size, the high voltage charged in the capacitor 11 is applied as a pulsed high voltage between the high voltage electrode 16 and the soil, and the weed 33 is placed between the tip of the high voltage electrode 16 and the soil. A spark discharge is generated. The electric field intensity between the high-voltage electrode 16 and the weed 33 due to the spark discharge is set to be, for example, 10 KV / cm or more. Is destroyed and withered and removed from the lawn. Further, since the discharge current is diffused into the soil by the spark discharge, the vicinity of the root of the weed 33 becomes a high electric field strength region, and the soil is sterilized at the same time.

Next, a specific procedure of the weed removal and sterilization operation by spark discharge will be described. After the carriage 1 is moved to the work area, the high-voltage generator 2 is grounded by piercing the needle-shaped ground member 13 into the ground, and the main power switch 32 is turned on. Next, the operator grasps the gripper 29 of the stick 15 and
The tip of the high voltage electrode 16 located at the tip of
Close to. When the power switches 31 and 32 are turned on, spark discharge is performed by the above-described mechanism, thereby removing the weeds 33 and sterilizing the soil. After the weed removal / sterilization work in a range that can be performed with the trolley 1 stopped, the trolley 1 is moved and the weed removal / sterilization work is repeated in the same manner.

Here, around the high voltage electrode 16, stays 22, 23 and a rod 24, which are grounded to the ground, are provided. For this reason, even if a current at the time of spark discharge flows to the stick 15 due to, for example, water droplets adhering to the tip side of the stick 15, the current flows through the rod 24, the stays 22 and 23 and the electric wire 28 into a needle-like shape. Earth member 13
From the ground to the ground, or directly from the rod 24 to the ground when the rod 24 is grounded, thereby preventing the occurrence of an electric shock accident. Moreover, the rod 24 and the stay 2
2 and 23 are covered with the insulating member cover 26,
The risk of contact with the tip of the stick 15 and the rod 24 is reduced, and the occurrence of an electric shock accident due to such contact is also prevented. Further, an insulator 21 is provided on the outer periphery of the stick 15.
Is formed and an insulator 27 is also provided on the outer peripheral portion of the cover 26.
Is formed, the current is prevented from reaching the grip portion 29 even when a leak occurs, and the electric shock of the worker holding the grip portion 29 is prevented.

When a dangerous state that may cause an electric shock occurs during the operation, the power switch 32 is turned off by releasing the gripper 29 and the spark discharge is interrupted. Therefore, safety during work is enhanced.

Next, a modified example of the high-voltage pulse generating circuit 5
Will be described with reference to FIG. 1 to 4 are denoted by the same reference numerals, and description thereof is omitted (the same applies hereinafter). In this modification , a high voltage pulse generation circuit 35 including only one capacitor 34 is used instead of the high voltage pulse generation circuit 5. When the main power switch 32 and the power switches 30 and 31 are turned on, the AC voltage from the AC generator 6 is increased in the transformer 4, and the increased high voltage is applied to the capacitor 34 and charged in the capacitor 34. You. Then, when the voltage charged in the capacitor 34 reaches a predetermined voltage, a state in which spark discharge is possible from the high-voltage electrode 16 is enabled. Therefore, the capacitor 34 is charged by turning on the main power switch 32 and the power switches 30 and 31. Further, by setting the high-voltage electrodes 16 to face the weeds and setting the distance between them to a predetermined size or less. The high voltage charged in the capacitor 34 is applied as a pulsed high voltage between the high voltage electrode 16 and the soil, and a spark discharge is performed between the high voltage electrode 16 and the soil via the weed 33.

Next, the main part of this embodiment will be described with reference to FIG. In this embodiment, a high-voltage protective suit 36 worn by an operator performing a weed removal and sterilization operation by spark discharge is provided.
A connecting portion 3 for connecting the AC generator 3, which is the power supply of the high voltage generator 2, and the high voltage electrode 16 to the high voltage protective clothing 36.
7 is provided. Therefore, when performing the weed removal / sterilization work, it is necessary to wear the high-voltage protective clothing 36 and connect the AC generator 3 and the high-voltage electrode 16 by the connecting portion 37. For this reason, during work, the high-voltage protective clothing 36 must be worn, and work safety is greatly improved.

[0022]

As described above, the present invention provides a high-voltage protective suit provided with a connecting portion for connecting a power supply of a high-voltage generator and a high-voltage electrode. Since it is worn, there is an effect that safety during work can be further enhanced.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view showing an example of a weed removing and sterilizing apparatus .

2 is a side view showing the whole of that.

FIG. 3 is a circuit diagram showing a high voltage generator.

FIG. 4 is a perspective view showing an attached state of a power switch.

FIG. 5 High voltage generatorModification ofFIG.

FIG. 6 is a side view showing a main part of one embodiment of the present invention.

[Explanation of symbols]

 2 High voltage generator 3 Power supply 16 High voltage electrode 33 Weed 36 High voltage protective clothing 37 Connection

Continuation of the front page (72) Inventor Hitoshi Ejima 1-1-1 Ishiba, Matsumoto-shi, Nagano Pref. Inside the Matsumoto Plant of Shimaura Ishikawa Machinery Co., Ltd. (56) References JP-A-4-148633 (JP, A) JP-A-Hei 3-83534 (JP, A) Actually open 1979-17549 (JP, U)

Claims (1)

(57) [Claims] 1. A high-voltage generator and a high-voltage electrode connected to the high-voltage generator, wherein a pulsed high voltage, a DC high voltage, or an AC high voltage is applied between the high-voltage electrode and soil. A high voltage worn by an operator who performs weed removal and sterilization work in a weed removal and sterilization device that sterilizes soil by applying applied electric power to remove weeds by spark discharge and make the soil near the roots of the weeds a high electric field strength region. A weed removing and disinfecting apparatus, wherein a protective suit is provided, and a connection portion for connecting a power supply of the high voltage generator and the high voltage electrode is provided in the high voltage protective suit.