JPH062247B2 - Chemical spraying device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drug solution spraying device for spraying a drug solution from above a trunk of a crop in a process of cultivating a crop such as tobacco.

2. Description of the Related Art Conventionally, in the cultivation of tobacco, the core of the tobacco trunk is cut by cutting the upper part of the trunk to prevent the tobacco trunk from growing upward. Then, by fixing the core, the number of leaves to be harvested is determined, and sufficient nutrients are supplied to the leaves to be harvested to improve the yield and quality.

However, even if core fixing is performed, if a side bud occurs from the root of the leaf, it becomes impossible to supply sufficient nutrients to the leaf to be harvested. Therefore, the occurrence of side buds is prevented by spraying a side bud inhibitor. Here, conventionally, the permeation transfer type side bud inhibitor that is sprayed on the leaf surface of the tobacco after the core of the tobacco has been widely used,
In recent years, contact-type side bud inhibitors have become popular.

This contact-type side bud inhibitor cannot suppress side buds unless it adheres to the root part of the leaf from which the side buds emerge, so it is necessary to let the stem flow down. Then, the spraying operation of the contact-type side bud suppressant is currently performed manually by each worker of tobacco while an operator carrying a chemical solution tank walks between the ridges.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention Manually spraying the side bud inhibitor is very heavy work, and the work efficiency is poor and it requires a long time.
Further, in spraying the side bud inhibitor, in order to achieve the maximum side bud inhibitory effect with a small amount of the liquid medicine, it is necessary to appropriately apply the liquid medicine to the root portion of the leaf where the side bud occurs.
It is a waste of the side bud inhibitor that the side bud inhibitor adheres to the leaf surface during growth.

Also, since the sprout control agent spraying work is performed in a state of looking up from diagonally below, it is difficult to accurately spread the side sprout control agent on the central part of the trunk, and it becomes more difficult as the fatigue of the worker increases. become.

Means for Solving the Problems A mobile agricultural machine provided with a chemical liquid tank containing a chemical liquid, and a holder attached to the side of the mobile agricultural machine so as to be movable horizontally in the left-right direction with respect to the traveling direction of the mobile agricultural machine. And a guide body in which a tip portion along the traveling direction of the mobile agricultural machine at a position where it abuts the side surface of the trunk of the crop is arranged to be inclined in a direction approaching the mobile agricultural machine, and is located behind the guide body. And a contact type sensor for detecting the presence of the trunk of the crop, and connected to the chemical liquid tank via a spray drive unit which is located above the contact type sensor and operates based on the detection result from the contact type sensor. And a spray port for chemical liquid were attached to the holder.

Action If you move the mobile farm along the ridge where the crop is planted,
The guide body attached to the holder comes into contact with the side surface of the trunk of the crop, and the contact causes the holder to move in the horizontal direction. By this movement, the contact-type sensor attached to the holder comes into contact with the trunk to detect the presence of the crop, and the spray drive unit is activated based on the detection result. The chemical solution is sprayed onto the top of the crop as detected by the contact sensor. Further, when the crop is growing in a tilted manner or when the crop is located away from the central portion of the ridge, the chemical liquid is sprayed similarly only by changing the horizontal movement amount of the holder. Therefore, since the distance between the chemical spray port and the crop is always constant during spraying, stable spraying of the chemical is performed, and the roots and leaves of the crop are damaged because the crop is not moved left and right during spraying. Is prevented.

Embodiment A first embodiment of the present invention will be described with reference to FIGS. 1 to 6. First, a mobile agricultural machine 1 for spraying a chemical liquid is a walking type tiller 2 to which a chemical liquid spraying work vehicle 3 is connected, and a front portion of a chassis 4 of the chemical liquid spraying work vehicle 3 is fixed to a chassis 5 of a tiller 2. It is connected to the hitch 6 by a kingpin 7.

An engine 8 is mounted on the front part of the chassis 5, and a mission case 9 is fixed to a substantially central part of the chassis 5. An axle 10 extending in the left-right direction is provided at the lower end of the mission case 9, and front wheels 12 are attached to both ends of the axle 10 via wheel tubes 11. A power take-off shaft 13 is provided above the mission case 9, and a power take-off shaft 13 is provided between a pulley 14 fixed to one end of the power take-off shaft 13 and a pulley 16 fixed to an output shaft 15 of the engine 8. The V belt 17 for transmission is wound. The power take-off shaft 13 and the axle 1
0 is connected via a sprocket and a chain (not shown).

Next, a rear wheel 18 is attached to a lower rear portion of the chassis 4, and a pump 19 which is a spray drive unit and a support column 20 which extends upward are fixed to the upper surface of the chassis 4, and a chemical liquid is used. Chemical solution tank 21 containing a side-bud suppressant
Is placed. Also, the input shaft 22 of the pump 19
A V-belt 25 is wound between a pulley 23 fixed to the shaft 23 and a pulley 24 fixed to the other end of the power takeoff shaft 13.

An adjustable metal fitting 26 is attached to the upper portion of the support column 20 so that the vertical position thereof can be adjusted, and is fixed at an arbitrary position by a bolt 27. A link holder 28 is fixed to the adjustable metal fitting 26. Two link holders 28 are located in the front-rear direction along the traveling direction of the mobile agricultural machine 1 and have a vertical axis. A pin hole (not shown) is formed. Then, the link holder 28
Is a pair of mounting links 2 with the same length dimension.
One ends of the reference numerals 9 and 30 are connected by a pin 31 inserted through the pin hole so as to be rotatable in the front-rear direction in a substantially horizontal plane. A holding body 32 formed in a substantially U shape is rotatably connected to the other ends of the attachment links 29, 30 by a pin 33 having a vertical axis. In addition, between the link holder 28 and one of the attachment links 30, the attachment links 29, 30 are rotated around the axis of the pin 31 in the traveling direction of the mobile agricultural machine 1 (arrow a direction). A spring 34 for biasing the direction is stretched, and a stopper (not shown) for restricting the rotation of the attachment links 29, 30 forward of a position substantially perpendicular to the traveling direction of the mobile agricultural machine 1 is further provided. It is provided.

A guide body 35 is provided on the holding body 32, and a tip end side of the mobile farm machine 1 along the traveling direction is inclined in a direction approaching the mobile farm machine 1, and a guide body 35 is located behind the guide body 35. A contact-type sensor 36 for detecting the presence of the crop trunk by contacting the crop trunk, and a drug solution spraying port 37 located above the contact-type sensor 36 and opening downward are attached. The chemical solution spray port 37 is connected to the chemical solution tank 21 via a chemical solution supply pipe (not shown), the pump 19 is provided in the middle of the pipe, and the pump 19 is provided with the A relay / soleinode mechanism 39 is provided which opens and closes an electromagnetic valve (not shown) based on the detection result from the contact sensor 36 and is connected to a battery 38.

In such a configuration, before the start of the sprinkling inhibitor spraying work by the mobile agricultural machine 1, the adjustable metal fitting 26 is slid vertically along the axial direction of the support column 20 to vertically move the holder 32. Adjust the position of. And
The guide body 35 comes into contact with the upper part of the tobacco trunk that is planted in the ridges and core-fixed, the contact-type sensor 36 comes into contact with the upper part of the tobacco trunk, and the liquid medicine spray port 37 approaches the upper part of the trunk. The holding body 32 is positioned so that the holding body 32 is positioned in the vertical direction.

After positioning the holder 32, the mobile agricultural machine 1 is advanced in the direction of arrow a along the ridge on which the tobacco is planted. As shown in FIG. 1, when the attachment links 29, 30 are rotated by the urging force of the spring 34 to a position where they come into contact with the stopper, the substantially central portion 35a of the guide body 35 stands upright at the central portion of the ridge. The mobile agricultural machine 1 is positioned so as to come into contact with the side surface of the trunk of the growing tobacco.

When the mobile agricultural machine 1 travels for a certain distance, the side surface of the trunk of the cigarette comes into contact with the substantially central portion 35a of the guide body 35. Then, as the mobile agricultural machine 1 advances after the tobacco trunk comes into contact with the guide body 35, the attachment links 29, 30 rotate rearward about the axis of the pin 31, and the holder also accompanies this rotation. Three
2 horizontally moves in the direction approaching the mobile farm 1. As the holding body 32 horizontally moves to the side of the mobile agricultural machine 1, the trunk of the cigarette abuts from the substantially central portion 35a of the guide body 35 to the rear end portion 35b, and eventually the trunk of the cigarette comes into contact with the contact sensor 36. The presence of cigarettes is detected.

The contact type sensor 36 abuts the trunk of the cigarette to detect the presence of the cigarette, and at the same time, the relay solenoid mechanism section 39.
The limit switch is turned on, the solenoid valve is opened, and the bean sprouts inhibitor stored in the chemical liquid tank 21 is sprayed from the chemical liquid spray port 37. The drug solution spray port 37 is located above the contact sensor 36, and the side bud inhibitor sprayed from the drug solution spray port 37 is the contact sensor 36.
Is sprayed from above the trunk detected by. Then, the side bud inhibitor flows down the trunk and flows down, so that the side buds are prevented from occurring by being applied to the root portion of the leaf.

When the mobile agricultural machine 1 advances a certain distance after the contact type sensor 36 contacts the trunk, the contact state between the contact type sensor 36 and the trunk is released, whereby the electromagnetic valve is closed and the sprinkle suppressor is sprayed. Be stopped. Further, when the contact state between the tobacco trunk and the guide body 35 is released as the mobile agricultural machine 1 advances, the attachment links 29 and 30 contact the stopper around the axis of the pin 31 by the urging force of the spring 34. Rotate to the contact position.

When the mobile agricultural machine 1 further progresses and the guide body 35 comes into contact with the trunk of the second tobacco, the side bud inhibitor is also sprayed in the same manner. Inhibitor spraying is automatic. The side bud inhibitor is sprayed only when the chemical spray port 37 is located above the trunk, and the side bud inhibitor is prevented from being applied to tobacco leaves. Therefore, there is no waste of the side bud inhibitor,
Efficient spraying is possible.

Next, the case where the tobacco planted on the ridge is grown in a tilted state, or the tobacco planted at a position apart from the central portion of the ridge will be described. For example,
As shown in FIG. 6, when the tobacco is growing while being inclined in a direction away from the mobile agricultural machine 1 in operation, the side surface of the trunk of the tobacco is moved toward the rear end portion 35 of the guide body 35 as the mobile agricultural machine 1 advances.
abut b. After this contact, as in the case described above, the attachment links 29, 3 are advanced as the mobile agricultural machine 1 advances.
When 0 rotates rearward about the axis of the pin 31, the holder 32 horizontally moves to the moving agricultural machine 1 side, and further, the contact-type sensor 36 contacts the trunk of the cigarette to detect the presence of the cigarette. The side bud inhibitor is sprayed. However, the attachment links 29, 3 at the time of spraying the side bud inhibitor
The amount of rotation of 0, that is, the amount of horizontal movement of the holding body 32 toward the mobile farm machine 1 side becomes small.

On the other hand, when the tobacco grows while being inclined in a direction approaching the mobile agricultural machine 1 in operation, the side surface of the trunk of the tobacco comes into contact with the tip portion 35c of the guide body 35 as the mobile agricultural machine 1 advances. After this contact, as in the case described above, the attachment links 29, 30 move to the pin 3 as the mobile agricultural machine 1 advances.
While rotating backward about the axis of 1, the holding body 32 horizontally moves to the moving agricultural machine 1 side, and the contact type sensor 36
When the squid contacts the tobacco trunk and senses the presence of the tobacco, the side bud inhibitor is sprayed. However, the rotation amount of the attachment links 29, 30 at the time of spraying the side bud inhibitor,
That is, the amount of horizontal movement of the holding body 32 toward the mobile agricultural machine 1 side increases.

Therefore, even if the tobacco is grown in a tilted state or is planted at a position apart from the center of the ridge, the amount of rotation of the attachment links 29, 30, that is, the holding body 32.
It is possible to surely spray the side-bud suppressant onto the tobacco trunk only by changing the horizontal movement amount of the tobacco. Moreover, since the side bud inhibitor is sprayed without moving the trunk of the tobacco in the left-right direction, damage to the roots and leaves of the tobacco at the time of spraying the side bud inhibitor is prevented. Further, since the holding body 32 moves horizontally during the spraying of the side bud inhibitor, the distance between the chemical solution spray port 37 attached to the holding body 32 and the upper part of the tobacco trunk is always kept constant. Thus, it is possible to prevent overspreading of the side bud inhibitor sprayed from the chemical liquid spraying port 37 and perform effective spraying work.

In the present embodiment, the mobile agricultural machine 1 for spraying the chemical liquid has been described by taking the case where the tiller 2 and the chemical liquid spraying work vehicle 3 are connected as an example, but a mobile agricultural machine for self-propelled chemical spraying is provided. May be.

Next, a second embodiment of the present invention will be described with reference to FIGS. 7 and 8. The same parts as those described in FIGS. 1 to 6 are designated by the same reference numerals, and the description thereof will be omitted. A pendulum-shaped frame 41 that is swingable in the left-right direction with a support shaft 40 as a fulcrum is attached to the upper portion of the column 20, and a weight 42 is fixed to the lower portion of the frame 41. Adjustable metal fittings 26 are attached to the pair of left and right support rods 43 provided on the frame 41 so as to be vertically adjustable along the axial direction of the support rods 43. Then, a pair of mounting links 2 are attached to these adjustable metal fittings 26.
One end of 9, 30 is rotatably connected by a pin 31,
A holding body 32 has a pin 33 at the other end of the attachment links 29, 30.
It is rotatably connected by. And the holder 32
In addition, the guide body 32, the contact sensor 36, and the chemical solution spray port 37
And are installed.

In such a configuration, a pair of spraying units for spraying the side bud inhibitor are provided on the left and right, and the work for spreading the side bud inhibitor can be simultaneously performed on the two rows of ridges. Moreover, when the field is tilted, the pendulum-shaped frame 41 rotates around the axis of the support shaft 40 and the attachment links 29, 30 and the like are maintained in a horizontal state. Therefore, by adjusting the positions of the left and right adjustable metal fittings 26 in the vertical direction according to the degree of inclination of the field, it is possible to smoothly perform the work of spraying the side bud inhibitor in the inclined field.

In this embodiment and the first embodiment, the holder 3
An example of using a pair of attachment links 29 and 30 to which a parallelogram link mechanism is applied as a structure for horizontally moving 2 has been described, but a pantograph system may be adopted as shown in FIG. Alternatively, a pipe slide insertion type may be adopted as shown in FIG.

EFFECTS OF THE INVENTION According to the present invention, as described above, a holder that is movable horizontally in the left-right direction is provided on the side of a mobile agricultural machine, and a guide, a contact sensor, and a chemical solution spray port are attached to the holder. As a result, the holding body moves horizontally when the guide body comes into contact with the side surface of the crop trunk, and the horizontal movement of the holding body causes the contact sensor to contact the crop trunk and detect the presence of the crop. , The chemical solution is sprayed from the mouth of the detected crop to the upper part of the crop, so that the chemical solution can be sprayed efficiently and easily on the upper part of the crop trunk. Furthermore, the chemical solution is sprayed only on the upper part of the trunk. It is possible to prevent the leaves from being spilled, and even when the crops are growing in a tilted state, the carrier may spray the chemical liquid while changing the horizontal movement amount, so that the spray spillage may occur. Spray the top of the crop without causing chemicals This can be done reliably, and the roots and leaves of the crop can be prevented from being damaged because the holder does not move horizontally and the crop does not move laterally when spraying the chemical liquid. Since it moves in the same direction, the distance between the chemical spray port and the upper part of the crop trunk can always be kept constant and stable chemical spray can be performed. By spraying the type of side bud inhibitor, it has the effect of increasing the yield of tobacco.

[Brief description of drawings]

1 to 6 show a first embodiment of the present invention. FIG. 1 is a plan view, FIG. 2 is a side view, FIG. 3 is a front view, and FIG. 4 is a spraying work state. The front view shown in FIG. 5, FIG. 5 is a plan view at that time, FIG. 6 is a front view showing a state of spraying work on a crop that is growing at an angle, and FIGS. 7 and 8 are second embodiments of the present invention. FIG. 7 is a front view, FIG. 8 is a front view showing a working posture in an inclined field, FIG. 9 and FIG.
FIG. 0 is a plan view showing another method for horizontally moving the holder. 1 ... Mobile agricultural machine, 19 ... Spraying drive unit, 21 ... Medicine solution tank,
32 ... Holding body, 35 ... Guide body, 36 ... Contact type sensor,
37 ... Spray port

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masanori Oku, 5250, Tamashima Kashiwajima, Kurashiki, Okayama Prefecture Japan Tobacco Inc., Okayama Leaf Tobacco Technology Center (72) Kiyoji Kato, 5250, Tamashima Kashiwajima, Kurashiki, Okayama Japan Tobacco Industry Co., Ltd. Okayama Leaf Tobacco Technology Center (72) Inventor Shogo Otsuka 23, Saiin Yasuka-cho, Ukyo-ku, Kyoto-shi, Kyoto Sanei Co., Ltd. (56) Reference JP-A-63-310665 (JP, A)

Claims (1)

[Claims] 1. A mobile agricultural machine provided with a chemical liquid tank containing a chemical liquid, and a holding body attached to the side of the mobile agricultural machine so as to be movable horizontally in the horizontal direction with respect to the traveling direction of the mobile agricultural machine. A guide body in which a tip end portion along the traveling direction of the mobile agricultural machine at a position abutting on the side surface of the trunk of the crop is arranged to be inclined in a direction close to the mobile agricultural machine, and is located behind the guide body. A contact type sensor for detecting the presence of a crop trunk, and a chemical solution connected to the chemical solution tank via a spray drive unit located above the contact type sensor and operating based on a detection result from the contact type sensor. A spraying device having a spraying port attached to the holder.