JP2004049118A - Chemical applicator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive chemical applicator having a simple structure and capable of carrying out chemical application in high efficiency. <P>SOLUTION: One terminal of a first sub-boom 21 is axially attached through a first shaft 41 to both sides of a main boom 20 attached through a lifting and lowering link 26 to the rear part of a main body 1 traveling while spanning a ridge, and one terminal of a second sub-boom 22 is axially attached through a second shaft 42 to the other terminal of the first sub-boom 21. The terminal at the rod side of a hydraulic cylinder 44 installed in the main boom 20 is connected to the upper side of the first sub-boom 21 at the vicinity of the one terminal. The lower side of the first sub-boom 21 in the vicinity of the one terminal is connected to the upper side of the second sub-boom 22 in the vicinity of the one terminal by a synchronous link 49. When the first sub-boom 21 is turned around the first shaft by contracting the hydraulic cylinder 44, the second sub-boom 22 is turned around the second shaft 42 by the synchronous link 49 according to the turning of the first sub-boom 21. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a drug sprayer.
[0002]
[Prior art]
Conventionally, for example, as a medicine spraying machine for tea garden, a main body that can run across a ridge, a main boom provided at a rear portion of the main body and extending in a width direction, and one end is provided at an end of the main boom. Some include a first sub-boom that is pivotally mounted by one shaft, and a second sub-boom that is pivotally mounted at one end to the other end of the first sub-boom by a second shaft. The main boom is provided with a first cylinder that rotationally drives the first sub-boom about a first axis, and the first sub-boom is a second cylinder that rotationally drives the second sub-boom about a second axis. Two cylinders are provided. The main boom, the first sub-boom, and the second sub-boom are provided with a medicine spray nozzle. The first and second sub-booms, the first and second cylinders, and the medicine spray nozzle are arranged on both left and right sides of the main body.
[0003]
The conventional medicine sprayer extends the first cylinder to swing the first sub-boom, and extends the second cylinder to swing the second sub-boom, thereby causing the main boom and the first boom to swing. The sub-boom and the second sub-boom are substantially aligned. Then, the main body travels along the ridge while straddling the ridge, and the medicine is sprayed from the medicine spray nozzles provided on the main boom and the first and second sub-booms. In this way, the medicine is simultaneously sprayed on the tea trees in a total of five ridges, that is, the ridge on which the main body runs across and the two ridges on each of the left and right sides of the ridge.
[0004]
[Problems to be solved by the invention]
However, in the above-mentioned conventional medicine spreader, since the first sub-boom is provided with the second cylinder, the first sub-boom has a large weight to be supported and is easily bent. When the first sub-boom is bent, there is a problem that the first and second sub-booms may come into contact with the tea trees in the row, and the medicine spreader may not be able to run. If the rigidity of the first sub-boom is increased in order to prevent the bending of the first boom, the size and cost of the first sub-boom are increased.
[0005]
In addition, since the conventional medicine sprayer is provided with a total of four cylinders by arranging the first and second cylinders on the left and right to swing the first and second sub-booms, these four cylinders A hydraulic pipe to be connected and a large-sized hydraulic pump for supplying hydraulic oil to the four cylinders are required, and there is a problem that the structure is complicated and expensive.
[0006]
Therefore, an object of the present invention is to provide a medicine spraying machine which has a simple structure, is inexpensive, and can spray medicine with high efficiency.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a medicine sprayer according to the first aspect of the present invention includes a main body that can run across a ridge,
A main boom that is supported by the body so as to be able to move up and down via a link mechanism and extends in the width direction;
A first sub-boom, one end of which is pivotally mounted on an end of the main boom by a first shaft, and which can swing around the first shaft;
A second sub-boom, one end of which is pivotally mounted on the other end of the first sub-boom by a second shaft, and which can swing around the second shaft;
Driving means provided on the main boom for swinging the first sub-boom;
Both ends are pivotally attached to one end of the main boom and one end of the second sub-boom, and when the first sub-boom is erected, an interlocking link for interlocking the second sub-boom in a lateral direction or a downward direction;
The main boom, the first sub-boom, and the medicine spraying nozzle provided on the second sub-boom are provided.
[0008]
According to the medicine spraying machine of the first aspect, the first sub-boom is driven by the driving means provided on the main boom, and swings around the first axis. When the first sub-boom is driven and erected, the second sub-boom is interlocked laterally or downward by the interlocking link. Since the second sub-boom is linked by the link, there is no need to provide a cylinder or the like as driving means for the second sub-boom in the first sub-boom as in the related art. Therefore, the weight acting on the first sub-boom can be reduced as compared with the conventional case, the first sub-boom can be prevented from bending, and the first and second sub-booms can be effectively prevented from coming into contact with ridged plants and the like. Further, since the first sub-boom has a smaller weight to be supported than before, it can be made less rigid than before, and can be formed at a low cost.
[0009]
Further, since the number of driving means can be reduced in the medicine spraying machine as compared with the related art, the cost can be reduced, and a driving circuit such as a hydraulic pipe connected to the driving means can be simplified. Further, when the driving means is constituted by, for example, a cylinder, a pump for supplying a working fluid to the driving means can be downsized. Therefore, the medicine spraying machine can be manufactured at a low cost with a simple structure.
[0010]
In addition, the second sub-boom is linked with the first sub-boom by the link link, so that the second sub-boom is quickly driven together with the first sub-boom. Therefore, this medicine spraying machine can quickly drive the first and second sub-frames according to the state of the furrow where the medicine is to be sprayed. When the first and second sub-booms are driven, only the driving means needs to be controlled, so that the operation is facilitated. As a result, the medicine spraying operation can be performed with high efficiency.
[0011]
Further, since the main boom is supported by the main body so as to be able to move up and down via a link mechanism, the main boom, the first sub-boom, and the By appropriately adjusting the height of the two sub-booms in accordance with the height of the plants in the furrow, the medicine can be appropriately applied to the plants in the furrow.
[0012]
The medicine sprayer according to claim 2 is the medicine sprayer according to claim 1, wherein the first sub-boom, the second sub-boom, and the interlocking link are provided on left and right, respectively, and the left and right first sub-booms are mutually connected. It is characterized in that it comprises one set of the above-mentioned driving means which is driven independently.
[0013]
According to the medicine spraying machine of claim 2, since the first sub-boom, the second sub-boom, and the medicine spray nozzle are provided on the left and right, the medicine can be sprayed on many ridges at the same time. Further, by operating the first sub-boom and the second sub-boom provided respectively on the left and right independently of each other, the left and right sides of the main body correspond to ridges extending at different inclination angles from each other. Therefore, the medicine can be appropriately applied to the plants in each row.
[0014]
According to a third aspect of the present invention, when the first sub-boom is erected, the first sub-boom, the second sub-boom and the interlocking link are connected to the main body of the main body. It is characterized by substantially entering the outer contour viewed from the front.
[0015]
According to the medicine sprayer of claim 3, when the first sub-boom is erected, the first sub-boom, the second sub-boom, and the interlocking link substantially enter the outer contour viewed from the front of the main body. The drug sprayer is compact in front. Therefore, the medicine spraying machine can be stored in a relatively small storage place, and can be easily moved to a place other than the place where the medicine spraying operation is performed.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
[0017]
FIG. 1 is a side view showing a medicine sprayer according to an embodiment of the present invention. FIG. 2 is a partial rear view of the medicine sprayer of FIG. This medicine spraying machine is for spraying a medicine on tea trees in a ridge of a tea plantation, and is roughly composed of a main body 1 running in a ridge and a medicine spraying section 2 attached to a rear portion of the main body 1. I have.
[0018]
As shown in FIGS. 1 and 2, a main body 1 of the medicine sprayer includes a gate-shaped frame 3 having a gate shape as viewed from the front and the back, and left and right infinite traveling attached to a lower end of the gate-shaped frame 3. Devices 5 and 5 are provided. The infinite traveling device 5 includes a front wheel 6, a drive wheel 8 driven by a hydraulic motor 7, and a crawler belt 9 wrapped around the wheels 6, 8. A top plate is hung on the upper part of the portal frame 3, and the engine unit 11, the control unit 12, and the operation handle 13 are arranged on the top plate. On both left and right sides of the portal frame 3, chemical solution tanks 15, 15 are arranged. An engine fuel tank 16 is disposed on the left front side of the portal frame 3, and a hydraulic oil tank (not shown) is disposed on the front right side of the portal frame 3.
[0019]
The output shaft of the engine in the engine section 11 is connected to a hydraulic pump 18 via a coupling 17. The hydraulic pump 18 is configured to supply hydraulic oil to the endless travel device 5 and a hydraulic cylinder of the medicine spraying unit 2 described below via a hydraulic pipe. The output shaft of the engine is connected to a power sprayer 19 via a pulley and a belt so that the power sprayer 19 can be driven. The power sprayer 19 sucks up the chemical in the chemical tanks 15 and 15 and pumps the chemical. The pressure is fed to a drug spraying nozzle 24 described later provided in the drug spraying section 2.
[0020]
The control unit 12 controls the engine, the hydraulic pump 18, and valves interposed in the hydraulic piping based on inputs from the operation handle 13, levers and switches (not shown), and the like. ing.
[0021]
The medicine spraying unit 2 is attached to the rear part of the portal frame 3 of the main body 1. The medicine spraying section 2 includes a main boom 20 extending in the width direction of the main body, a first sub-boom 21 having one end pivotally attached to an end of the main boom 20, and one end connected to the other end of the first sub-boom. And a second sub-boom 22 having a shaft mounted thereon. When the first and second sub-booms 21 and 22 are swung so as to extend in the width direction of the main body 1 as shown in FIG. 2, the main boom 20, the first sub-boom 21, and the second sub-boom 22 Each of them has an arc shape curved so that both ends face downward when viewed from the rear of the main body 1. The main boom 20, the first sub-boom 21, and the second sub-boom 21 are provided with tubular medicine spray nozzles 24, 24, 24 each having a plurality of medicine ejection ports.
[0022]
The main boom 20 is attached to pillar portions 31, 31 located on the left and right sides of the rear portion of the portal frame 3 via two lifting links 26, 26 serving as link mechanisms connected near both ends. . The elevating link 26 is composed of two arms 26a and 26b which are vertically arranged in parallel. One end of the upper arm 26a is pivotally supported by the upper end of a column bracket 28 fixed to the column 31 of the portal frame. The other end of the arm 26a is pivotally supported on the upper end of a boom-side bracket 29 fixed to the main boom 20. One end of the lower arm 26b is pivotally supported by the lower end of the column-side bracket 28, and the other end is pivotally supported by the lower end of the boom-side bracket 29. The tip of the rod 33a of the hydraulic cylinder 33 is pivotally mounted at a position closer to the main body 1 than the longitudinal center of the lower arm 26b, and the head-side end of the hydraulic cylinder 33 is connected to the portal frame. It is pivotally mounted near the lower end of the column 31.
[0023]
FIG. 3 is an enlarged view showing the main boom 20 and the first and second sub-booms 21 and 22 on the right side of the main boom 20 in the medicine spraying section 2. As shown in FIG. 3, an end of the main boom 20 and one end of the first sub-boom 21 are mounted on a first shaft 41. Further, the other end of the first sub-boom 21 and one end of the second sub-boom 22 are journaled by a second shaft 42.
[0024]
A hydraulic cylinder 44 is attached to the main boom 20 as driving means for driving the first sub-boom 21. That is, the head-side end of the hydraulic cylinder 44 is journaled to a bracket 43 provided above the center of the main boom 20. The tip of the rod 44a of the hydraulic cylinder is mounted on a bracket 45 provided on the upper side near one end of the first sub-boom 21.
[0025]
Below the end of the main boom 20, a substantially “C” -shaped first support member 47 formed so that the tip is located below the vicinity of one end of the first sub-boom 21. Fixed. A support portion is provided at the tip of the first support member 47. When the first sub-boom is swung and extended in the lateral direction, the lower side near one end of the first sub-boom 21 is moved downward. , And are formed so as to be supported by the support portion.
[0026]
One end of an interlocking link 49 is pivotally attached to a tip of the first support member 47 by a first link shaft 48. The other end of the link 49 is attached to a bracket 50 provided near one end of the second sub-boom 22 by a second link shaft 51.
[0027]
On the lower surface near the other end of the first sub-boom 21, a second support 53 having a substantially “C” shape similar to that provided at the end of the main boom 20 is fixed. A support portion is provided at the distal end of the second support member 53. When the second sub-boom 22 is swung and extended in the lateral direction, a lower surface near one end of the second sub-boom 22 is provided. Is formed so as to be supported by the support portion.
[0028]
2 and 3 illustrate only the right side of the main boom 20, but the left and right sides of the main boom 20 have the same first and second sub-booms 21 and 22, the hydraulic cylinder 44, The links 49 and the like are arranged at substantially line-symmetric positions with respect to the center line of the main body 1.
[0029]
According to the medicine spraying machine having the above structure, when the medicine is not sprayed, the left and right hydraulic cylinders 44 are contracted to raise the first sub-boom 21 as shown by the dotted lines in FIGS. When the first sub-boom 21 is erected, the second sub-boom 22 is interlocked by the interlocking link 49, and the second sub-boom 22 is disposed above the main boom 20 in a state where the second sub-boom 22 faces in the lateral direction. Thus, the left and right first and second sub-booms 21 and 22 are folded so that the left and right second sub-booms 22 and 22 intersect each other substantially at the center in the longitudinal direction when viewed from the front and back. Become. The left and right second sub-booms 22 are formed so as not to collide with each other when folded. The left and right first and second sub-booms 21 and 22 and the interlocking link 49 in the folded state substantially enter the outer contour of the main body 1 when viewed from the front and back as shown by dotted lines in FIG. Become like As a result, the medicine spraying machine becomes compact, and can be easily moved inside and outside the tea garden. Further, the space for storing the medicine sprayer can be made relatively small.
[0030]
When spraying the medicine on the tea trees on the ridges of the tea garden, the medicine sprayer extends the folded first and second sub-booms 21 and 22 outward in the width direction of the main body 1. The operation at this time will be described with respect to the first and second sub-booms 21 and 22 on the right side. First, when the extension operation of the sub-boom is started, hydraulic oil is supplied from the hydraulic pump 18 to the hydraulic cylinder 44, and the rod 44a of the hydraulic cylinder projects. When the rod 44a of the hydraulic cylinder projects, the first sub-boom 21 pivotally attached to the end of the rod 44a via the bracket 45 rotates clockwise around the first shaft 41 at one end as viewed from the back of the main body 1. Rotate. As a result, the second shaft 42, which pivotally connects the other end of the first sub-boom 21 and one end of the second sub-boom 22, draws an arc A as shown in FIGS. Accordingly, the interlocking link 49 rotates clockwise about the first link shaft 48 as viewed from the back of the main body 1. Thus, the second link shaft 51 that connects the other end of the interlocking link 49 and the bracket 50 of the second sub-boom 22 draws an arc B. The second sub-boom 22 is driven so that the second shaft 42 draws an arc A and the second link shaft 51 draws an arc B, so that the second sub-boom 22 is 1 rotates clockwise when viewed from the back. As a result, the first sub-boom 21 and the second sub-boom 22 extend outward in the width direction of the main body 1.
[0031]
The first and second sub-booms 21 and 22 on the left side are also driven to rotate counterclockwise similarly to the first and second sub-booms 21 and 22 on the right side to extend outward in the width direction of the main body 1.
[0032]
With the left and right first and second sub-booms 21 and 22 extended to the left and right sides, the body 1 runs across the ridges and travels between the ridges by the left and right infinite traveling devices 5 and 5. Then, the power sprayer 19 is driven, and the chemical solution in the chemical solution tanks 15, 15 is supplied to the main boom 20, and the chemical spray nozzles 24, 24 attached to the first sub-boom 21 and the second sub-boom 22 on both left and right sides, respectively. … To pump. The pumped chemical solution is discharged from the discharge ports of the chemical spray nozzles 24 in a spray state. Thus, the main boom 20 and the first and second sub-booms 21 and 22 on both the left and right sides simultaneously spray the medicine on the adjacent five rows of tea trees 55, 55.
[0033]
The distance between the medicine spray nozzle 24 and the tea tree 55 in the ridge is adjusted by a hydraulic cylinder 33 which is mounted on the main boom 20. When it is necessary to bring the medicine spraying nozzle 24 close to the tea tree, the hydraulic cylinder 33 is contracted, and the arms 26a and 26b of the elevating link 26 to which the tip of the rod 33a of the hydraulic cylinder is axially attached are moved to the column side. Each of the brackets 28 is turned around the axis thereof. As a result, the main boom 20 connected to the lifting link 26 descends, and the first and second sub-booms 21 and 22 connected to the main boom 20 descend. As a result, the medicine spraying nozzles 24, 24, 24 provided on the main boom 20 and the first and second sub-booms 21, 22 approach the tea tree.
[0034]
On the other hand, when it is necessary to keep the medicine spraying nozzle 24 away from the tea tree, the hydraulic cylinder 33 is extended, and the elevating link 26 connected to the hydraulic cylinder 33 is swung to be connected to the elevating link 26. Raise the main boom 20. As a result, the first and second sub-booms 21 and 22 connected to the main boom 20 are raised, and the main boom 20 and the medicine spray nozzles 24 and 24 provided on the first and second sub-booms 21 and 22 are raised. , 24 move away from Chaki.
[0035]
When a part or all of the ridge on which the medicine spraying machine sprays the medicine is inclined, the first and second sub-booms 21 and 22 are operated according to the inclination of the ridge, and the inclined ridge or the inclination is operated. Chemicals can be sprayed properly on tea trees in unoccupied furrows. For example, the ridge on which the main body 1 of the drug sprayer runs while straddling is inclined so as to be higher from right to left as viewed from the back of the main body 1, and the ridge on the right side of the main body 1 is substantially horizontal. Consider the case. In this case, the rod 44a of the right hydraulic cylinder as viewed from the back of the main body 1 is contracted over a predetermined length. Then, the first sub-boom 21 rotates counterclockwise about the first shaft 41 by a predetermined angle, and accordingly, the second sub-boom 22 rotates counterclockwise about the second shaft 42 by a predetermined angle. I do. Thereby, despite the fact that the second sub-boom 22 is separated from the main body 1, the medicine spraying nozzle 24 of the second sub-boom 22 is located sufficiently above the tea tree of the furrow where the medicine is to be sprayed. be able to. Therefore, there is no inconvenience that the tip of the second sub-boom 22 or the medicine spraying nozzle 24 provided on the second sub-boom 22 comes into contact with the tea tree, and the medicine can be effectively sprayed on the tea tree.
[0036]
This is effectively achieved in the medicine sprayer of the present embodiment by driving the second sub-boom 22 with the relatively light interlocking link 49. That is, the relatively heavy hydraulic cylinder 44 for driving the first sub-boom 21 is provided on the main boom 20 supported by the main body 1, and the first sub-boom 21 is provided with the relatively light interlocking link 49. Therefore, even if the main body 1 is inclined so that the first sub-boom 21 side is located below the main body 1, the amount of bending of the first and second sub-booms 21 and 22 is relatively small. Therefore, the first sub-boom 21 may have relatively low rigidity, and the first sub-boom 21 can be further reduced in weight. As a result, the hydraulic cylinder can be reduced in size, and the first and second sub-booms 21 and 22 can be quickly driven with a relatively small force. Therefore, this medicine spraying machine can spray a medicine appropriately and promptly in response to the inclination of the ridge. Further, since the second sub-boom 22 is driven in conjunction with the first sub-boom 21, the driving operation of the boom can be easily performed.
[0037]
Further, in the medicine sprayer of the above embodiment, since the power for driving the first and second sub-booms 21 and 22 is only the hydraulic cylinder 44, two powers are required for driving the first and second sub-booms, respectively. The number of hydraulic cylinders can be reduced, the hydraulic circuit can be simplified, and the size of the hydraulic pump can be reduced as compared with the related art including the hydraulic cylinder. Therefore, this medicine spraying machine can greatly reduce the cost.
[0038]
In the above embodiment, the main body 1 includes the infinite traveling devices 5 and 5, but may include a wheel traveling device having no crawler belt, or a traveling device that travels along a rail provided in a furrow. May be provided.
[0039]
Further, in the above embodiment, a third sub-boom may be provided at the other end of the second sub-boom 22, and a medicine spray nozzle may be provided at the third sub-boom. Thereby, the medicine can be sprayed on the tea trees in the seven rows at the same time.
[0040]
Further, the medicine spraying machine of the present embodiment may be used in places other than tea gardens.
[0041]
【The invention's effect】
As is clear from the above, according to the medicine spraying machine of the first aspect of the present invention, the main body capable of running across the ridge, the main body is supported by the main body via a link mechanism so as to be movable up and down, and extends in the width direction. A main boom, one end of which is pivotally mounted on an end of the main boom by a first shaft, and a first sub-boom swingable about the first shaft; and one end of which is pivotally connected to the other end of the first sub-boom by a second shaft. A second sub-boom that can be pivoted about the second axis, a driving means provided on the main boom for pivoting the first sub-boom, both ends of which are connected to one end of the main boom and the second sub-boom. An interlocking link that is axially attached to one end of the two sub-booms and that interlocks the second sub-boom in the horizontal or downward direction when the first sub-boom is erected, and the main boom, the first sub-boom, and the second sub-boom Setting With the provision of the medicine spray nozzle provided, there is no need to provide a cylinder or the like for driving the second sub-boom on the first sub-boom, and the weight acting on the first sub-boom can be reduced. Deflection can be effectively prevented. Therefore, it is possible to effectively prevent the first and second sub-booms from coming into contact with the vegetation or the like, and the first sub-boom can be formed with a lower rigidity than the conventional one and can be formed easily and inexpensively. Further, for example, the number of drive means of a boom such as a cylinder can be reduced as compared with the conventional case, a drive circuit such as a hydraulic pipe connected to the drive means can be simplified, and a working fluid is supplied to the cylinder. The pump to be supplied can be downsized. Therefore, the medicine spraying machine can be simplified in structure and cost can be effectively reduced. Further, the second sub-boom can be quickly driven together with the first sub-boom by the interlocking link, so that the medicine spraying operation can be executed efficiently with high response to the inclination angle of the ridge to be sprayed with the medicine. When the first and second sub-booms are driven, only the driving means needs to be controlled, so that the operation is facilitated. The height of the main boom, the first sub-boom, and the second sub-boom are appropriately adjusted in accordance with the height of the ridges by adjusting the elevation position of the main boom by the link mechanism. The medicine can be appropriately applied to the plants.
[0042]
According to the medicine spraying machine of the second aspect of the present invention, the first sub-boom, the second sub-boom, and the interlocking link are provided on left and right, respectively, and one set of the drive for driving the left and right first sub-booms independently of each other. Means, the medicine can be sprayed on many ridges at the same time, and by operating the first sub-boom and the second sub-boom provided respectively on the left and right independently of each other, the left and right sides of the main body are mutually separated. The medicine can be appropriately applied to the plants in the ridges extending at different inclination angles.
[0043]
According to the medicine spraying machine of the third aspect of the present invention, when the first sub-boom is erected, the first sub-boom, the second sub-boom, and the interlocking link substantially enter an outer contour viewed from the front of the main body. Therefore, the medicine spraying machine can be made compact at the front, can be stored in a relatively small storage place, and can easily be moved to a place other than the place where the medicine spraying operation is performed.
[Brief description of the drawings]
FIG. 1 is a side view showing a medicine sprayer according to an embodiment of the present invention.
FIG. 2 is a partial rear view of the medicine sprayer of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2;
[Explanation of symbols]
1 Main Body 2 Drug Spreading Unit 20 Main Boom 21 First Sub-Boom 22 Second Sub-Boom 24 Drug Spraying Nozzle 26 Elevating Link 33 Hydraulic Cylinder 41 First Axis 42 Second Axis 44 Hydraulic Cylinder 49 Interlocking Link

Claims (3)

A main body that can run across the ridge,
A main boom that is supported by the body so as to be able to move up and down via a link mechanism and extends in the width direction;
A first sub-boom, one end of which is pivotally mounted on an end of the main boom by a first shaft, and which can swing around the first shaft;
A second sub-boom, one end of which is pivotally mounted on the other end of the first sub-boom by a second shaft, and which can swing around the second shaft;
Drive means provided on the main boom for swinging the first sub-boom;
Both ends are pivotally attached to one end of the main boom and one end of the second sub-boom, and when the first sub-boom is erected, an interlocking link for interlocking the second sub-boom in a lateral direction or a downward direction;
A medicine sprayer comprising: a medicine spray nozzle provided on the main boom, the first sub-boom, and the second sub-boom. The drug sprayer according to claim 1,
The medicine spraying machine, wherein the first sub-boom, the second sub-boom, and the interlocking link are provided on left and right, respectively, and provided with a set of the driving means for driving the left and right first sub-booms independently of each other. In the medicine spraying machine according to claim 1 or 2,
The medicine sprayer according to claim 1, wherein when the first sub-boom is raised, the first sub-boom, the second sub-boom, and the interlocking link substantially enter an outer contour as viewed from the front of the main body.

Images