JPH0347555A - Apparatus for sprinkling chemical solution - Google Patents

Abstract

PURPOSE:To enhance working efficiency by providing not only a holder but also a guide body to the lateral part of a moving agricultural machine and mounting a contact type sensor behind the guide body. CONSTITUTION:The position of a holder 32 in a vertical direction is controlled by sliding a free adjusting fitting 26 along the axial direction of a support 20 in the vertical direction. The positioning of the holder 32 is performed so that not only a guide body 35 but also a contact type sensor 36 are brought into contact with the upper parts of the trunks of a tobacco planted in a levee to be subjected to topping and a chemical solution sprinkling port 37 is brought into contact with the upper parts of said trunks to position in close vicinity thereto. Thereafter, a moving agricultural machine 1 advances in a direction (a) to be positioned so that the central part 35a of the guide body 35 is brought into contact with the side surfaces of the trunks of the tobacco grown at the central part of the levee in an erected state. By this method, yield can be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a chemical solution spraying device that drops and sprays a chemical solution from above the trunk of a crop during the cultivation process of crops such as tobacco.

BACKGROUND OF THE INVENTION Conventionally, in the cultivation of tobacco, the upper part of the tobacco trunk is cut to prevent the trunk from growing upward. The number of leaves to be harvested is determined by coring, and sufficient nutrients are supplied to the leaves to be harvested, thereby improving the yield and quality.

However, even if the core is fixed, if debris sprouts from the roots of the leaves, sufficient nutrients cannot be supplied to the leaves to be harvested. Therefore, the occurrence of axillary buds is prevented by spraying an axillary bud inhibitor. Conventionally, systemic transfer-type axillary bud inhibitors have been widely used, which are sprayed on the tobacco leaf surface after the tobacco has been cored.
In recent years, contact-type axillary bud inhibitors have become popular.

This contact-type axillary bud suppressant cannot suppress axillary buds unless it attaches to the root part of the leaf where axillary buds emerge, so it must flow down the stem. Currently, this contact-type axillary bud suppressant is sprayed by a worker carrying a chemical solution tank on his back as he walks along the furrows and manually spraying each tobacco plant.

Problems to be Solved by the Invention Manual work of spraying an axillary bud suppressant is very hard labor, and the work efficiency is poor and requires a long time.

Furthermore, when spraying axillary bud inhibitors, in order to achieve the maximum axillary bud suppressing effect with a small amount of the chemical, it is necessary to spray the chemical solution accurately at the roots of the leaves where axillary buds occur.
Adhesion of the axillary bud suppressant to the growing leaf surface is a waste of the axillary bud suppressant.

Additionally, since spraying of the axillary bud inhibitor is performed while looking up diagonally from below, it is difficult to spray the axillary bud inhibitor accurately to the center of the trunk, which becomes even more difficult as worker fatigue increases. become.

Means for Solving the Problems A mobile agricultural machine equipped with a chemical solution tank storing a chemical solution is provided, and the mobile agricultural machine is arranged on the side of the mobile agricultural machine and is oriented horizontally in a left-right direction substantially perpendicular to the traveling direction of the mobile agricultural machine. A movable holding body is provided, and a guide body is arranged to be inclined left and right with respect to the traveling direction of the mobile agricultural machine and comes into contact with the side of the trunk of the crop, and a guide body is located behind the guide body and is arranged to tilt in the left and right directions with respect to the traveling direction of the mobile agricultural machine. a contact sensor that detects the presence of a trunk; and a chemical solution spraying port that is connected to the chemical solution tank via a spray drive unit that is located above the contact sensor and operates based on the sensing result from the contact sensor. and were attached to the holder.

When the mobile agricultural machine is moved along the ridge where crops are planted,
A guide body attached to the holder comes into contact with the side surface of the crop trunk, and this contact causes the holder to move in the horizontal direction. As a result of this movement, the contact sensor attached to the holding body comes into contact with the trunk and senses the presence of the crop.Based on the sensing result, the spraying drive unit operates to spray the chemical in the chemical tank into the chemical spray opening. The chemical solution is then sprayed onto the top of the crop as detected by a contact sensor. Furthermore, if the crop is growing at an angle or is located off the center of the ridge, the chemical solution will be sprayed in the same way, only by changing the amount of horizontal movement of the holder.

Therefore, since the distance between the chemical spraying port and the crop is always constant during chemical spraying, stable chemical spraying is possible, and since the crop is not moved from side to side during chemical spraying, the roots and leaves of the crop are damaged. is prevented.

Embodiment A first embodiment of the present invention will be explained based on FIGS. 1 to 6. First, the mobile agricultural machine 1 that performs chemical spraying is constructed by connecting a walking type tiller 2 to a chemical spraying vehicle 3, and the front part of the chassis 4 of the chemical spraying vehicle 3 is fixed to the chassis 5 of the tiller 2. It is connected to the hitch 6 by a king pin 7.

An engine 8 is mounted on the front portion of the chassis 5, and a transmission case 9 is fixed approximately at the center of the chassis 5. An axle 10 extending in the left-right direction is provided at the lower end of the transmission case 9, and front wheels 12 are attached to both ends of the axle 10 via wheel tubes 11. Further, a power take-off shaft 13 is provided in the upper part of the mission case 9, and a power output is provided between a pulley 14 fixed to one end of the power take-off shaft 13 and a pulley 16 fixed to the output shaft 15 of the engine 8. A transmission belt 17 is wound around it. Note that the power take-off shaft 13 and the axle 1
0 through a sprocket and chain (not shown).

Next, a rear wheel 18 is attached to the rear lower part of the chassis 4, and a pump 19 serving as a spraying drive unit and a column 20 extending upward are fixed to the upper surface of the chassis 4. Chemical solution tank 21 containing armpit bud inhibitor
is placed.

Further, a pulley 23 fixed to the input shaft 22 of the pump 19 and a pulley 2 fixed to the other end of the power take-off shaft 13 are provided.
4, a V-belt 25 is wound around it.

An adjustable metal fitting 26 is attached to the upper part of the support column 20 so as to be vertically adjustable, and is fixed at an arbitrary position with a bolt 27. A link holder 28 is fixed to the adjustable metal fitting 26.

This link holder 28 is formed with two pin holes (not shown) located in the front-rear direction along the traveling direction of the mobile agricultural machine 1 and having an axis in the vertical direction. One ends of a pair of attachment links 29 and 30 having equal length dimensions are connected to the link holder 28 by a pin 31 inserted into the bottle hole so as to be rotatable in the front and rear directions within a substantially horizontal plane. ing. Additionally, the mounting link 29.3
A holding body 32 formed in a substantially U-shape is rotatably connected to the other end of the holding body 32 by a pin 33 having an axis in the vertical direction. Note that between the link holder 28 and one of the attachment links 30, the attachment links 29, 30
a spring 34 that urges the movable agricultural machine 1 to rotate in the direction of movement (direction of arrow a) around the axis of the bin 31;
A stopper (not shown) is further provided to prevent the attachment links 29, 30 from rotating forward beyond a position substantially perpendicular to the traveling direction of the mobile agricultural machine 1.

The holding body 32 includes a guide body 35 which is disposed so that its tip side along the traveling direction of the mobile agricultural machine 1 is inclined in a direction approaching the mobile agricultural machine 1, and a guide body 35 located behind the guide body 35. A contact sensor 36 that senses the presence of a crop trunk by coming into contact with the crop trunk, and a chemical solution spraying port 37 that is located above the contact sensor 36 and opens downward are attached. The chemical liquid dispersion port 37 is connected to the chemical liquid tank 21 via a chemical liquid supply pipe (not shown), and the pump 19 is provided in the middle of this vibrator. A relay and solenoid mechanism section 39 is provided which opens and closes a solenoid valve (not shown) based on sensing results from the contact sensor 36 and is connected to a battery 38 .

In such a configuration, before the mobile agricultural machine 1 starts spraying the side bud suppressant, the adjustable fitting 26 is slid vertically along the axial direction of the support 20 to adjust the vertical direction of the holder 32. Adjust the position. and,
The guide body 35 comes into contact with the upper part of the tobacco stem planted in the ridge and cored, and the contact sensor 36 comes into contact with the upper part of the tobacco stem, and furthermore, the chemical solution spraying port 37 approaches the upper part of the stem. The holding body 32 is positioned so that it is located at the same position.

After positioning the holding body 32, the mobile agricultural machine 1 is moved in the direction of arrow a along the ridge where tobacco is planted. As shown in FIG. 1, when the mounting links 29 and 30 are rotated to the position where they come into contact with the stopper due to the biasing force of the spring 34, the approximately central portion 35a of the guide body 35 is in an upright state at the central portion of the ridge. A mobile agricultural machine 1 is positioned so as to come into contact with the side of a growing tobacco trunk.

When the mobile agricultural machine 1 travels a certain distance, the side surface of the tobacco trunk comes into contact with the substantially central portion 35a of the guide body 35.

As the mobile agricultural machine 1 advances after the tobacco trunk contacts the guide body 35, the attachment links 29 and 30 rotate rearward around the axis of the bin 31, and with this rotation, the holder 32 moves horizontally in a direction approaching the mobile agricultural machine 1. As the holding body 32 moves horizontally toward the mobile agricultural machine 1 side, the tobacco stem comes into contact with the guide body 35 from the approximate center part 35a to the rear end part 35b, and eventually the tobacco stem comes into contact with the contact type sensor 36. The presence of cigarettes is detected.

When the contact sensor 36 comes into contact with the tobacco stem and detects the presence of tobacco, the relay/solenoid mechanism 39
The limit switch is turned on to open the solenoid valve, and the armpit bud inhibitor stored in the chemical tank 21 is sprayed from the chemical spray opening 37. The chemical solution spraying port 37 is located above the contact type sensor 36, and the side bud suppressant sprayed from the chemical solution spraying port 37 reaches the contact type sensor 36.
It is sprayed from above the trunk where it is detected. This axillary bud inhibitor flows down the trunk and is applied to the leaf attachment and root regions, thereby preventing the occurrence of axillary buds.

When the mobile agricultural machine 1 moves a certain distance after the contact sensor 36 comes into contact with the trunk, the contact state between the contact sensor 36 and the trunk is released, the solenoid valve is closed, and the side bud suppressant is not sprayed. will be stopped. Further, when the contact between the tobacco trunk and the guide body 35 is released as the mobile agricultural machine 1 moves forward, the attachment links 29 and 30 are brought into contact with the stopper around the axis of the pin 31 due to the biasing force of the spring 34. Rotate until they touch.

When the mobile agricultural machine 1 further advances and the guide body 35 comes into contact with the stem of the second tobacco plant, the side bud inhibitor is similarly sprayed. Spraying of inhibitor takes place automatically. The axillary bud inhibitor is sprayed only when the chemical solution spraying port 37 is located above the trunk, and the axillary bud inhibitor is prevented from being applied to the tobacco leaves. This eliminates waste of the axillary bud inhibitor,
Enables efficient spraying.

Next, a case will be described in which the tobacco planted in the ridge is grown in an inclined state, or the tobacco is planted in a position away from the center of the ridge. for example,
As shown in FIG. 6, if the tobacco is growing in a direction that is tilted away from the mobile agricultural machine 1 that is being worked on, the shift f! As the jJ agricultural machine 1 advances, the side surface of the tobacco trunk comes into contact with the rear end portion 35b of the guide body 35. After this contact, as in the case described above, as the mobile agricultural machine 1 advances, the attachment link 2
9.30 rotates backward around the axis of the pin 31, and the holding body 32 moves horizontally toward the mobile agricultural machine 1, and the contact sensor 36 comes into contact with the tobacco stem and senses the presence of tobacco. Accordingly, axillary bud inhibitors are sprayed.

However, the attachment link 29 when spraying the axillary bud inhibitor
．． The amount of rotation of '30, that is, the amount of horizontal movement of the holding body 32 toward the mobile agricultural machine 1 side becomes smaller.

On the other hand, if the tobacco grows in a direction that approaches the mobile agricultural machine 1 being worked on, the side surface of the tobacco trunk comes into contact with the tip 35c of the guide body 35 as the mobile agricultural machine 1 advances. After the second contact, as in the case described above, the attachment links 29 and 30 move toward the pin 31 as the mobile agricultural machine l advances.
At the same time, the holding body 32 moves horizontally toward the moving agricultural machine 1 side, and the contact sensor 36 contacts the tobacco stem and senses the presence of tobacco, thereby releasing the side bud suppressant. will be sprayed. However, the amount of rotation of the attachment link 29.degree. 30 when spraying the side bud suppressant, that is, the amount of horizontal movement of the holding body 32 toward the mobile agricultural machine 1 becomes large.

Therefore, even if the tobacco is grown in an inclined state or planted in a position away from the center of the ridge, the amount of rotation of the attachment link 29,300, that is, the amount of rotation of the holder 32
By simply changing the amount of horizontal movement of the tobacco, the side bud inhibitor can be reliably sprayed onto the tobacco trunk. Furthermore, since the axillary bud inhibitor is sprayed without moving the tobacco trunk in the left-right direction, damage to the tobacco roots and leaves during spraying of the axillary bud inhibitor is prevented. Furthermore, since the holding body 32 moves horizontally when spraying the side bud inhibitor, the distance between the chemical spraying port 37 attached to the holding body 32 and the top of the tobacco stem is always kept constant. , the side bud suppressant sprayed from the chemical solution spraying port 37 is prevented from spreading too much, and effective spraying work can be performed.

In the present embodiment, the mobile agricultural machine 1 for spraying chemical liquid was explained by using a tiller 2 and a chemical spraying work vehicle 3 connected as an example, but a self-propelled mobile agricultural machine exclusively for spraying chemical liquid was provided. You can.

Next, a second embodiment of the present invention will be described based on FIGS. 7 and 8. Note that the same parts as those explained in FIGS. 1 to 6 are indicated by the same reference numerals, and the description thereof will be omitted. A pendulum-shaped frame 41 is attached to the upper part of the column 20 and is swingable in the left-right direction about a support shaft 40, and a weight 42 is fixed to the lower part of the frame 41. Adjustable metal fittings 26 are attached to a pair of left and right support rods 43 provided on the frame 41 so as to be able to adjust their positions in the vertical direction along the axial direction of these support rods 43. A pair of attachment links 29 are attached to these adjustable fittings 26.
．． 30 is rotatably connected to one end by a pin 31, and a holder 32 is rotatably connected to the other end of the attachment link 29.30 by a pin 33. A guide body 32 , a contact sensor 36 , and a chemical solution dispersion port 37 are attached to the holding body 32 .

In such a configuration, a pair of spraying units for spraying the axillary bud inhibitor are provided on the left and right, and the axillary bud inhibitor can be sprayed on two ridges at the same time. Moreover, when the field is sloped, the pendulum-shaped frame 41 rotates around the axis of the support shaft 40 to maintain the attachment links 29, 30, etc. in a horizontal state. Therefore, by adjusting the position of the left and right adjustable metal fittings 26 in the vertical direction depending on the degree of inclination of the field, it is possible to smoothly spray the side bud suppressant on the sloping field.

Note that in this embodiment and the first embodiment.

Although the structure for horizontally moving the holding body 32 has been explained using a pair of mounting links 29° and 30 using a parallelogram link mechanism as an example, a pantograph method may also be adopted as shown in FIG. Alternatively, a pipe slide insertion type may be adopted as shown in FIG.

Effects of the Invention As described above, the present invention provides a holding body that is horizontally movable in the left and right directions and is disposed on the side of a mobile agricultural machine, and a guide body, a contact type sensor, and a chemical solution spraying port are attached to this holding body. As a result, when the guide body comes into contact with the side of the crop trunk, the holder moves horizontally, and this horizontal movement of the holder causes the contact sensor to come into contact with the crop trunk and sense the presence of the crop. Since the chemical solution is sprayed from the chemical spraying port to the upper part of the detected crop, it is possible to efficiently and easily spray the chemical solution to the upper part of the crop trunk. In addition, even if the crop is grown at an angle, the holder changes the amount of horizontal movement and sprays the chemical solution, reducing the risk of spray leakage. The chemical solution can be reliably sprayed onto the upper part of the trunk of the crop without causing any damage, and since the holder moves horizontally during the chemical spraying and prevents the crop from moving horizontally, the roots and leaves of the crop can be sprayed securely. Damage can be prevented, and furthermore, since the holder moves horizontally, the distance between the chemical spraying port and the top of the crop trunk can be maintained constant to ensure stable chemical spraying. It has the effect of increasing the yield of tobacco by spraying a contact-type axillary bud inhibitor that prevents the generation of tobacco axillary buds as a chemical solution.

[Brief explanation of drawings]

1 to 6 show a first embodiment of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a side view, and FIG. 3 is a front view.
Figure 4 is a front view showing the state of spraying work, Figure 5 is a plan view at that time, Figure 6 is a front view showing the state of spraying work on crops that are growing at an angle, and Figures 7 and 8 are The second embodiment of the present invention is shown in which Fig. 7 is a front view, Fig. 8 is a front view showing a working posture in a sloping field, and Figs. 9 and 10 show horizontal movement of the holder. FIG. 4 is a plan view showing another method for DESCRIPTION OF SYMBOLS 1... Mobile agricultural machine, 19... Spraying drive part, 21...
Chemical tank, 32... Holding body, 35... Guide body, 3
6...Contact type sensor 37...Medical solution dispensing port application Person Ishikawajima Shibaura Machinery Co., Ltd. Japan Tobacco Inc. Co., Ltd.

Claims (1)

[Claims] A mobile agricultural machine equipped with a chemical solution tank storing a chemical solution is provided, and a holder is provided that is disposed on the side of the mobile agricultural machine and is movable horizontally in a left-right direction substantially perpendicular to the traveling direction of the mobile agricultural machine. , a guide body that is arranged to be inclined laterally with respect to the traveling direction of the mobile agricultural machine and that comes into contact with the side surface of the trunk of the crop; and a contact that is located behind the guide body and that senses the presence of the trunk of the crop. A type sensor and a chemical liquid spraying port located above the contact type sensor and connected to the chemical liquid tank via a spraying drive unit that operates based on the sensing result from the contact type sensor are attached to the holder. A chemical spraying device characterized by: