JPH0545302B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application 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 ART Conventionally, in cultivating tobacco, in order to prevent the tobacco stem from elongating upward, the upper part of the tobacco stem is cut and cored. 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 cores are fixed, if side shoots develop from the base 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. In the past, permeation-type axillary bud inhibitors, which were sprayed on the tobacco leaf surface after the tobacco was cored, were widely used, but in recent years, contact-type axillary bud inhibitors have become popular. It's starting.

This contact-type axillary bud suppressant cannot suppress axillary buds unless it attaches to the base of the leaf where the axillary buds emerge, so it must flow down the trunk. 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 inhibitor 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 maximum axillary bud suppressing effect with a small amount of chemical solution, it is necessary to accurately spray the chemical at the base of the leaf where axillary buds occur. Adhesion of the inhibitor to the growing leaf surface is a waste of the axillary bud inhibitor.

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 Problem A mobile agricultural machine equipped with a chemical liquid tank containing a chemical liquid is provided, and the mobile agricultural machine is disposed on the side of the mobile agricultural machine and is movable in the left and right directions substantially orthogonal to the traveling direction of the mobile agricultural machine. a guide body provided with a holding body and arranged to be tilted in the left-right direction with respect to the traveling direction of the mobile agricultural machine; a contact type sensor located behind the guide body and detecting the presence of a crop trunk; 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 is attached to the holding body, and A plurality of leaf protection cylinders each having an axis and being rotatable about the axis are arranged in the front-rear direction along the guide body.

Function: When the mobile agricultural machine is moved along the ridge where crops are planted, the contact sensor comes into contact with the trunk and detects the presence of the crop.Based on the sensing result, the spraying drive unit is activated to open the chemical solution tank. The chemical solution inside is sprayed from the chemical spraying port, and the chemical solution is sprayed onto the upper part of the crop trunk as detected by the contact sensor. Also,
If the crop is growing at an angle or is located off the center of the ridge, the guide body will come into contact with the side of the crop trunk, and this contact will cause the holding body to move in the left-right direction. , the presence of crops is sensed using a contact sensor, and a chemical solution is sprayed onto the upper part of the trunk of the detected crop. In addition, when the trunk of the crop is detected by the contact sensor, the crop is in a state close to the holder, but the leaves of the crop may come into contact with the leaf protector and the holder, etc. Since the leaf protector cylinder rotates around its axis due to contact with the leaves, damage to the leaves of the crop is prevented.

Embodiment A first embodiment of the present invention will be described based on FIGS. 1 to 3. First, the mobile agricultural machine 1 that performs chemical spraying is a walking-type tailor 2 connected to a chemical spraying vehicle 3. The chassis 4 of the chemical spraying vehicle 3 is
The rear end of the shaft is connected to a hitch 6 fixed to the chassis 5 of the tailor 2 by a king pin 7.

An engine 8 is mounted on the rear portion of the chassis 5, and a transmission case 9 is fixed approximately at the center of the chassis 5. An axle 10 is provided at the lower end of the transmission case 9 and extends in the left-right direction.
Wheel tubes 11 are provided at both ends of this axle 10.
A rear wheel 12 is attached via the. Further, a power take-off shaft 13 is provided at the upper part of the transmission case 9.
A V-belt 17 for power transmission is wound 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. Incidentally, the front packing power take-off shaft 13 and the axle shaft 10 are connected via a sprocket and a chain (not shown).

Next, a front wheel 1 is provided at the front lower part of the chassis 4.
8 is attached to the upper surface of the chassis 4, and a pump 19 serving as a spraying drive unit and a column 20 extending upward are mounted on the upper surface of the chassis 4.
are fixed thereto, and a chemical solution tank 21 containing a medicinal solution, ie, an armpit bud suppressant, is placed thereon.
Further, a V-belt 25 is wound between a pulley 23 fixed to the input shaft 22 of the pump 19 and a pulley 24 fixed to the other end of the power extraction shaft 13.

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 spraying port support 28 extending horizontally in the left-right direction perpendicular to the traveling direction of the mobile agricultural machine 1 is attached to the adjustable metal fitting 26 so that its position can be adjusted in the left-right direction.
is fixed in any position. A rectangular tube 30 is fitted to the distal end of the dispersion port support 28 so as to be slidable along the axial direction of the dispersion port support 28, and is fixed at an arbitrary sliding position with a bolt 31. The square tube 30 has a pair of left and right mounting links 3.
The upper ends of the attachment links 32 and 33 are rotatably connected in the left and right directions by a pin 34, and a holder 35 formed in a substantially U-shape is attached to the lower end of the attachment links 32 and 33.
6, they are connected so as to be rotatable in the left and right direction.

The holding body 35 includes a pair of left and right guide bodies 37 that expand in a substantially V-shape toward the traveling direction of the mobile agricultural machine 1, and a pair of guide bodies 37 located at the rear of the convergent side of the guide bodies 37 and in contact with the tobacco stem. A contact type sensor 38 that detects the presence of tobacco by doing so, and a chemical solution dispersion port 39 located above the contact type sensor 38 and opening downward are attached. Further, on the guide body 37, a plurality of cylindrical leaf protection cylinders 40 are arranged in the front-rear direction along this guide body 37, and these leaf protection cylinders 4
0 is rotatably held by a pin 41 having an axis in the vertical direction. In addition, the chemical solution dispersion port 3
9 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 pipe. A relay and solenoid mechanism section 43 is provided which opens and closes a solenoid valve (not shown) based on the sensing results and is connected to the battery 42.

In such a configuration, before the mobile agricultural machine 1 starts spraying the side bud suppressant, the square tube 3
The position of the holding body 35 is adjusted in the left-right direction by sliding the holder 35 in the left-right direction along the axis of the spray port support 28, and the adjustable fitting 26 is moved along the axis of the support 28.
The vertical position of the holding body 35 is adjusted by sliding it vertically along the axis of the holding body 35. Then, the contact sensor 38 comes into contact with the upper part of the tobacco stem planted in the ridge and cored, and
The holding body 35 is positioned so that the chemical solution dispersion port 39 is located close to above the trunk.

After positioning the holding body 35, the mobile agricultural machine 1 is moved in the direction of arrow a along the ridge where tobacco is planted. When the mobile agricultural machine 1 advances a certain distance,
A contact sensor 38 contacts the top of the tobacco stem and senses the presence of tobacco. Contact sensor 3
8 comes into contact with the tobacco stem and senses the presence of tobacco, at the same time the limit switch in the relay/solenoid mechanism 43 is turned on and the solenoid valve is opened, and the axillary bud suppressant stored in the chemical tank 21 is sprayed. It is sprayed from the mouth 39. In addition,
The chemical solution spraying port 39 is located above the contact type sensor 38, and the side bud suppressant sprayed from the chemical solution spraying port 39 is sprayed from above the trunk detected by the contact type sensor 38. Then, this axillary bud inhibitor flows down the trunk and is applied to the base of the leaves, thereby preventing the occurrence of axillary buds.

When the mobile agricultural machine 1 moves a certain distance after the contact sensor 38 contacts the trunk, the contact sensor 38
The state of contact with the stem is released, and as a result, the solenoid valve is closed and the spraying of the axillary bud inhibitor is stopped.

Note that when the contact sensor 38 detects tobacco, the upper leaves of the tobacco trunk come close to the holding body 35 and the guide body 37, but these leaves come into contact with the leaf protector body 40 and are not held. Contact with the body 35 and guide body 37 is prevented. Since the leaf protection cylinder body 40 rotates gently around the axis of the pin 41 due to contact with the leaf, damage to the leaf is prevented.

The mobile agricultural machine 1 moves further and the contact sensor 3
When 8 comes into contact with the stem of the second tobacco plant, the side bud suppressant is similarly sprayed, and thereafter, the side bud suppressant is automatically sprayed on each tobacco stem in the same manner. . The axillary bud suppressant is sprayed only when the chemical solution spraying port 39 is located above the trunk, thereby preventing the axillary bud suppressant from being applied to the tobacco leaves. Therefore, there is no waste of the axillary bud inhibitor, and efficient spraying can be achieved.

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. 3, if the tobacco grows in a direction that is tilted away from the mobile agricultural machine 1 being worked, the side of the tobacco trunk will come into contact with the guide body 37 as the mobile agricultural machine 1 advances. . As the mobile agricultural machine 1 advances, the attachment links 32, 3
3 rotates around the pins 34 and 36, the holding body 37 swings toward the tobacco stem,
The presence of cigarettes is then sensed by the contact sensor 38. At this time, a chemical solution spraying port 39 is located above the tobacco stem, and the axillary bud suppressant is sprayed onto the upper part of the tobacco stem based on the sensing result by the contact sensor 38. Therefore, even when the tobacco is growing in an inclined state, the side bud suppressant can be reliably sprayed onto the trunk of the tobacco without causing any omission of spraying. Furthermore, when the tobacco stem comes into contact with the guide body 37, the upper leaves of the tobacco stem come into contact with the leaf protector 40, preventing the holding body 35 from coming into contact with the guide body 37, and the leaves are prevented from coming into contact with the guide body 37. Damage to the leaf due to contact with the holder 35 and the guide 37 is prevented. Furthermore, since the holding body 35 moves in the left-right direction according to the position of the tobacco stem and sprays the axillary bud inhibitor without moving the tobacco stem in the left-right direction, damage to the tobacco roots during spraying is avoided. Prevented.

In this embodiment, the mobile agricultural machine 1 for spraying the side bud suppressant was explained using an example in which the Taylor 2 and the chemical spraying work vehicle 3 were connected. Agricultural machinery may also be provided.

Next, a second embodiment of the present invention will be described based on FIGS. 4 and 5. In addition, Figures 1 to 3
Portions that are the same as those explained in the figures are indicated by the same reference numerals, and description thereof will be omitted. An adjustable metal fitting 44 is attached to the upper part of the column 20 so that its position can be adjusted in the vertical direction, and a link holder 45 is fixed to this adjustable metal fitting 44. This link holder 45
There are formed 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. and,
One ends of a pair of attachment links 46 and 47 having equal length dimensions are connected to the link holder 45 by a pin 48 inserted into the pin hole so as to be rotatable in the front and rear directions within a substantially horizontal plane. Further, on the other end side of the attachment links 46, 47, a holding body 49 formed in a substantially U-shape is rotatably connected by a pin 50 having an axis in the vertical direction.
Note that between the link holder 45 and one of the attachment links 47, the attachment links 46, 47 are provided.
A spring 51 is tensioned to urge the movable agricultural machine 1 to rotate in the direction of movement of the movable agricultural machine 1 (direction of arrow b) around the axis of the pin 48, and the mounting links 46 and 47 A stopper (not shown) is provided to restrict rotation forward beyond a position substantially perpendicular to the direction of travel.

A pair of upper and lower guide bodies 52 are disposed on the holding body 49 so that the distal end side along the traveling direction of the mobile agricultural machine 1 is inclined in a direction close to the mobile agricultural machine 1;
A contact type sensor 38 located behind the guide body 52 and a chemical solution dispersion port 39 located above the contact type sensor 38 and opening downward are attached. Further, between the pair of upper and lower guide bodies 52, a plurality of cylindrical leaf protection cylinders 4 are provided.
0 are arranged in the front-rear direction along the guide body 52, and these leaf guard cylinders 40 are rotatably held by pins 41 having vertical axes.

In such a configuration, the mobile agricultural machine 1 is advanced so that the trunk of the tobacco growing upright in the center of the ridge comes into contact with the substantially center portion 52a of the guide body 52, and the side bud suppressant is sprayed. I do. When the tobacco stem comes into contact with the approximate center of the guide body 52, the attachment links 46, 47 rotate rearward around the axis of the pin 48, and the holding body 49 moves horizontally toward the mobile agricultural machine 1. As the mobile agricultural machine 1 advances with this movement, the contact sensor 38 senses the tobacco, and the side bud suppressant is sprayed from the chemical spraying port 39 onto the upper part of the detected tobacco trunk. Note that when the tobacco trunk is in contact with the guide body 52, the upper leaves of the stem are in contact with the leaf protector body 40, and the leaves that are produced when the leaves come into contact with the holding body 49 and the guide body 52 are damage is prevented.

Note that if the tobacco is growing at an angle or growing away from the center of the ridge, the part where the tobacco stem first comes into contact with the guide body 5
2 or the rear end 52c of the guide body 52
Therefore, only the amount of horizontal movement of the holding body 49 changes accordingly, and the side bud suppressant can be reliably sprayed without any leakage. Further, the leaf protection cylinder 40 can prevent damage to the leaves in the same way as when tobacco is grown upright in the center of the ridge.

Effects of the Invention As described above, the present invention includes a holder that is movable in the left-right direction and is disposed on the side of the mobile agricultural machine, and a guide body, a contact type sensor, and a chemical solution spraying port are attached to this holder. With this, it is possible to detect the trunk of a crop using a contact sensor and spray the chemical solution from the chemical spraying port to the upper part of the detected crop trunk. Therefore, it is possible to efficiently and easily spray the chemical solution to the upper part of the crop trunk. In addition, the chemical solution can be sprayed only on the upper part of the trunk to prevent it from getting on the leaves, and if the crop is growing at an angle, the guide body can be used to The holder comes into contact with the trunk, and due to the contact, the holding body moves left and right toward the trunk, and the contact sensor senses the crop trunk and sprays the chemical solution, so it can spray all the crop trunks. It is possible to reliably spray the chemical solution without causing any leakage, and by arranging a plurality of leaf protection cylinders that are rotatable around the vertical axis in the front-back direction along the guide body, When spraying the chemical solution, the leaves at the top of the trunk are brought into contact with these protective leaf cylinders, and damage to the leaves caused by the leaves coming into contact with the holder or guide can be prevented. By spraying a contact-type side bud inhibitor that prevents the generation of side buds, it has the effect of increasing the yield of tobacco.

[Brief explanation of the drawing]

Figures 1 to 3 show a first embodiment of the present invention; Figure 1 is a side view, Figure 2 is a front view, and Figure 3 is a spraying operation for crops that are growing at an angle. The front view, FIGS. 4 and 5 show the second embodiment of the present invention, and FIG. 4 is a rear view, and FIG. 5 is a plan view. 1... Mobile agricultural machine, 19... Spraying drive unit, 21...
... Chemical solution tank, 35 ... Holding body, 37 ... Guide body, 38 ... Contact type sensor, 39 ... Chemical solution spraying port, 40 ... Leaf protector body, 49 ... Holding body, 52 ...
...guide.

Claims (1)

[Claims] 1. A mobile agricultural machine equipped with a chemical solution tank containing a chemical solution is provided, and a holder is provided on the side of the mobile agricultural machine and is movable in the left and right directions substantially orthogonal to the traveling direction of the mobile agricultural machine, a guide body disposed to be inclined laterally with respect to the traveling direction of the mobile agricultural machine; a contact type sensor located behind the guide body and detecting the presence of a crop trunk; and an area above the contact type sensor. A chemical solution spraying port located at the holder and connected to the chemical solution tank via a spraying drive unit that operates based on the sensing result from the contact sensor is attached to the holder, and has a vertical axis and an axis. A chemical liquid spraying device characterized in that a plurality of leaf protection cylinders rotatable around the center are disposed in the front-rear direction along the guide body.