JPH091015A - Oscillating spray type self-propelled control machine - Google Patents

Abstract

(57) [Abstract] [Purpose] In oscillating spray type self-propelled control machine, when arranging nozzle holes below to enable spraying at a low position near the surface of the earth,
Consideration should be given so that it does not contact the ground surface when the front part of the machine body is tilted upward, and that it does not project to the side and interfere with other objects when turning. In addition, the spray pipe and the swinging mechanism below the spray pipe are prevented from being exposed to the chemical liquid or water dropped from the injection hole as much as possible. A lower spray pipe 4 can be vertically provided below the spray pipe 3, and the lower end injection hole 2a of the lower spray pipe 4 is located at the crawler 1
0 directly above the straight line L connecting the rear end of the chassis 9 to the rear end of the grounding portion 10a, the outer end of the injection hole 2 of the lower spray pipe 4 is inside the spray cover 1, and the upper surface of the spray pipe 3 It is possible to attach an immersion cover to the.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention oscillates a spray pipe having an arched shape in a front view, and sprays a chemical solution from a nozzle hole provided in the spray pipe to allow the spray pipe to travel. The present invention relates to the structure of a spray pipe in an orbiting spray type self-propelled control machine for performing control work.

[0002]

2. Description of the Related Art The applicant of the present invention has a swinging spray type self-propelled pest control in which a spray pipe having an arched shape as viewed from the front is swung while a chemical solution is sprayed from a nozzle hole provided in the spray pipe for traveling. I have applied for a machine. Among them, the spray pipe is divided into three parts, that is, the left and right parts and the upper part of the center part, and the spraying can be controlled independently. For example, in the case of spraying only the left side of the machine body, the spraying of the central upper part and the spraying tube of the right side is stopped, and the chemical solution is sprayed from the injection holes of only the left spraying tube. Further, the spray pipe forming the front arch shape can be swung back and forth and left and right as a unit, which enables spraying of the chemical solution over the front and back of the branches and leaves. For this reason, a swing mechanism including a fulcrum shaft for swinging, a link, a motor, and the like is disposed below the arch-shaped spray pipe.

[0003]

However, the arch shape of the conventional spray pipe is supposed to spray the branches and leaves located to some extent above. Therefore, there is no problem in the case of shelf fruits (grape etc.), but in fruit trees such as citrus fruits that have branches and leaves as far as it is closer to the ground, or in an orchard where fruit trees are planted on a slope, When spraying fruit trees planted on the slope below the road formed by cutting through the slope in a contour line, the branches and leaves are located below the lower end of the arch of this spray pipe, and the spray does not reach. There was a problem.

If a spray pipe is laid down separately from the lower part of the arch-shaped spray pipe, it is possible to spray the branches and leaves existing below, but in this case, it must be considered.
This is the arrangement position. The pest control machine can be used when driving on slopes,
Alternatively, when loading on a truck, the aircraft may tilt forward and backward, and if the front of the aircraft tilts upward with the separate spray pipe hung vertically, contact the spray pipe with the ground, etc. It may be damaged. Further, even at the lateral position, if the spray pipe projects laterally beyond the outer end portion of the main body cover, and the spray pipe projects outside the swivel range assumed by the driver, the swirl radius is particularly reduced. In an orchard where it is necessary, there is a high possibility that the spray pipe will be caught on the branches of the fruit tree during turning.

Although the spray tube itself and the swinging mechanism below the spray tube have each member made of a water-impervious material, they are intended to prevent the chemical liquid dripping from the injection hole as much as possible. Even if it is not necessary to increase the immersion resistance of each member in a large scale, the durability of each member is improved and the cost is reduced.

[0006]

The present invention uses the following means in order to solve the above problems. That is, in a swinging spray type self-propelled control machine that sprays with a plurality of injection holes are arranged in an arch shape in a front view by combining the spray pipes on the left and right sides and in the center, and sprays while swinging these spray pipes. A lower spray pipe that can be independently spray-controlled can be installed vertically from the lower ends of the left and right spray pipes.

Further, in the rocking spray type self-propelled control machine of the above construction, in the crawler traveling type or the wheel traveling type, in a side view, of the wheel disposed at the rear end or the rearmost portion of the ground portion of the crawler. The horizontal lower limit position of the lower end of the lower spray pipe was arranged at a position just above a straight line connecting the rear end of the grounding portion to the rear end of the chassis.

In the swing spray type self-propelled machine with the above structure, the outer end of the injection hole attached to the lower spray pipe is arranged inside the cover for covering the spray pipe.

Further, in a rocking spray type self-propelled control machine having a plurality of nozzle holes and spraying while swinging a spray tube which is formed in an arch shape in a front view, only the nozzle holes are provided on the upper surface of the spray tube. An immersion cover was attached in a state of protruding.

[0010]

[Function] By vertically arranging an additional lower spray pipe, the nozzle hole is located below the fuselage, and citrus fruits with low lower branches and branches of trees planted on the slope below from the contour line running path Spraying is possible. Since spraying can be controlled independently, spraying can be performed from the lower spray tube only on the side requiring spraying when spraying to a low position is required.

The front part of the machine body can be tilted upward until the rear end of the chassis contacts the ground. Therefore, the lower end of the lower spray pipe is a straight line connecting the rear end of the crawler ground portion and the rear end of the chassis in the case of the crawler traveling type, and in the case of the wheel traveling type,
As long as it is above the straight line that connects the rear end of the ground contact part of the wheel and the rear end of the chassis, the rear end of the chassis comes into contact with the ground even if the front part of the aircraft tilts upward even if the vehicle runs in a place with a large front-back inclination. Since it does not incline more than the state, there is no possibility that the lower end of the lower spray pipe will come into contact with the ground.

Further, by making the side width of the lower spray pipe also inside the cover, it is sufficient to assume only the outer surface of the cover as the turning radius when turning, and the side wall of the lower projection pipe projects laterally from the cover when turning. The situation where the lower spray pipe comes into contact with trees, branches and leaves does not occur.

Further, by attaching an immersion cover to the spray pipe, the spray pipe itself can be protected from water and chemicals, as a matter of course.
Since the chemical liquid is dripped from the lower end portions on both sides of the arch-shaped spray pipe, the amount of the chemical liquid or water to be dripped on the swinging main portion below the spray pipe is also reduced.

[0014]

Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a side view of a rocking spray type self-propelled control machine according to the present invention, FIG. 2 is a rear view of the same, and FIG. 3 is a front view showing a spray pipe 3 to which a lower spray pipe 4 is attached and a rocking mechanism thereof. FIG. 4 is a chemical liquid supply circuit diagram for the spray pipe 3 to which the lower spray pipe 4 is attached, and FIG. 5 shows a spray area in which the lower spray pipe 4 is attached to both sides of the spray pipe 3 and the spray is sprayed from above to near the surface of the earth. FIG. 6 is a schematic front view showing a spray area in a state where the lower spray pipe 4 is attached to both sides of the spray pipe 3, and spraying is performed on the slopes on both sides of the contour line running path on the slope. Is a schematic front view showing a spray area in a state where the lower spray pipes 4 are attached to both sides of the spray pipe 3, and FIG. 8 shows a spray region in which the water-proof cover 5 is attached. FIG. 9 is a front view showing the swing mechanism thereof, and FIG. Side view of the mechanism, FIG. 10 is plan view of the same, FIG. 11 is a perspective view showing the fixing portion of the front and rear swing links 17 to the front and rear pivot shafts 15, 12 is a muffler tube 3
5 is a side view of the engine E in which the exhaust cover 38 is attached to the periphery of FIG. 5, FIG. 13 is a front view thereof, and FIG. 14 is a perspective view showing a rotation braking means of the hose reel R for manual spraying.

First, referring to FIGS. 1 and 5 to 7, a rocking spray type self-propelled control machine (hereinafter referred to as “control machine SW”) according to the present invention will be described. A chassis 9 is fixedly mounted on a crawler traveling device formed by winding left and right crawlers 10, an operation portion is formed in front of the chassis 9, and a driver's seat 11 is arranged at a rear end portion thereof. An operation column 12 having various levers is erected on the front side and the left side thereof. On the chassis 9 behind the driver's seat 11, the chemical liquid tank 7 is covered in the forefront part and the engine part cover 8 is covered in the middle part, and the engine E for traveling drive and dynamic injection drive, for manual spraying are provided. The hose reel R and the engine part in which the dynamic injection P is installed are installed inside, and the spray pipe 3 and the lower spray pipe 4 which are covered with the spray part cover 1 and have a plurality of injection holes 2 are installed in the rearmost part. A spraying section is provided. The chemical solution tank 7, the engine section, and the spray section constitute a main body section M.

As described above, the main body portion M includes the chemical liquid tank 7
The engine part and the spray part are divided into three parts in the front and back, and the outer surfaces of the chemical liquid tank 7, the engine part cover 8, and the spray part cover 1, which form the outer surfaces thereof, are continuous, and the entire main body part M is covered. In addition, the outer shape is a shape with a squeezing from the front to the back so that the turning radius can be made as small as possible so that it can be easily turned even in an orchard where many shrubs are planted.

In the main body portion M, first, in the engine portion covered by the engine portion cover 8, as shown in FIG.
The exhaust pipe 37 and the muffler 36 of the above are projectingly provided below the chassis 9, and are disposed in the engine portion as shown in FIGS.
As described above, the muffler pipe 35 is arranged from the cylinder head 34 of the engine E to the muffler 37. Further, a cooling air suction fan 33 is attached to the engine E, and the air sucked by the cooling air suction fan 33 is
The engine is cooled by passing through the fins protruding from the outside of the cylinder head 34, particularly the outside of the cylinder head 34. Further, in the present embodiment, an exhaust cover 38 having a U-shape in plan view is attached so as to cover the muffler pipe 35 from the cylinder head 34. The air that has cooled the outside of the cylinder head 34 is introduced into the air exhaust cover 38 to cool the muffler pipe 35. The upper end of the exhaust cover 38 is closed, while the lower end is opened, and the wind introduced into the exhaust cover 38 escapes below the chassis 9 in which the muffler 36 is disposed. To be winded.

In this way, the heat radiation from the muffler pipe 35
Since it can be discharged to the lower part of the machine body and the temperature rise in the engine part due to heat radiation of the muffler pipe 35 is reduced, softening of the hose wound around the hose reel R also provided in the engine part is prevented, and the engine It suppresses the rise of oil temperature and fuel temperature and eliminates overheating.

Similarly, in the engine section, the manual spraying hose reel R is arranged as described above. In the hose reel R, as shown in FIG. 14, a tubular hose winding portion 39 is fixedly provided between the side plates 40 on both sides, and one side plate 40 is provided.
A rotary shaft 41 is provided on the outer side of the
Is rotatably supported by a bearing portion 44a at the upper end of the support tool 44 fixed to the main body. Further, a rotation operation lever 42 is attached to the outer end of the rotation shaft 41. When the rotation operation lever 42 is used to rotate the hose reel R,
As a whole, the hose can be wound around the hose winding portion 39, and the wound hose can be wound around. The hose winding portion 39 can introduce the chemical liquid from the dynamic jet P into the hose wound around the hose winding portion 39, and at the time of manual spraying, use a cock (not shown). When opened, it can be sprayed by hand.

When not in use, the hose is wound around the hose winding portion 39, but unless the rotation of the hose reel R is braked, the hose naturally rotates and the hose bends or becomes tangled. To do. Therefore, as shown in FIG.
A "U" -shaped rotation stopper stopper 43 is pivotally supported on the bearing portion 44a of the support tool 44, and when the hose is not used, the rotation stopper stopper 43 is tilted to rotate the rotation shaft as shown in FIG. The rotation operation lever 42 at the outer end 41 is clamped and fixed so that the hose reel R does not rotate. Further, a hose tip stopper 43a is projected from the rotation stopper stopper 43, and when the hose is not used,
By externally fitting the tip of the hose to the hose tip stopper 43a, the hose tip can be fixed in position.

Further, a dynamic jet P driven by an engine E is arranged in the engine section, and the dynamic jet P causes each spray pipe in the spray section in the rear part to move from the chemical liquid tank 7 in the front part. 3.
4, the chemical solution is pressure-fed.

Next, the structure of the spray unit will be described with reference to FIGS. The outside of the spray unit is covered with a spray unit cover 1 as shown in FIGS. 1 and 2, and the spray pipes 3L, 3M, 3R (these are integrated so that they are housed in the spray unit cover 1). The spray tube 3 is referred to as "spray pipe 3") and is arranged in an arc shape in a front view. Each spray tube 3L / 3M
A plurality of injection holes 2, 2, ... Are provided on the upper surface of 3R. Further, a chemical solution port 3b connecting a chemical solution hose is provided on each front surface in a protruding manner. Further, in the embodiment shown in FIG. 8, the projection portion of each injection hole 2 is cut out over the entire upper surface of the spray pipe 3 to cover the immersion cover 5. The watertight cover 5 must be watertight and have elasticity so as to follow the swing of the spray pipe 3. For example, rubber, soft vinyl, or the like can be the waterproof cover 5.
Both lower end portions of the water-proof cover 5 are bent as shown in FIG. 8 so that they can sufficiently follow the swing, and are screwed to the inner side surfaces on both sides of the spray unit cover 1 by bolts 6 and 6. In this way, the water or the chemical liquid dripped from the injection hole 2 does not directly come into contact with the spray pipe 3 due to the interposition of the water-proof cover 5, and flows on the water-proof cover 5 from the flexible portions 5a and 5a at the lower end portions on both sides. Drop it. That is, water or a chemical liquid is dripped from the lower ends of both sides of the spray pipe 3, and the drip of the chemical liquid to the swing mechanism below the spray pipe 3 is reduced.

The swing structure of the spray pipe 3 is shown in FIGS.
11 to FIG. When swinging, the entire spray tube 3 is integrally swung back and forth and left and right. Two rod-shaped holding members 18, 18 are vertically provided in parallel with each of the spray pipes 3L, 3M, 3R in the front-rear direction. On the other hand, the upright frames 14 and 14 standing upright from the pedestal 13 fixed to the floor of the aircraft.
The front-rear rotation shaft 15 is rotatably mounted on the upper part of the front and rear, and the left and right lower end portions of the front-rear rocking link 17 which is arch-shaped in a front view are fixed to the front-rear rotating shaft 15, and the front-rear rocking link 17 is fixed. Clamping member 1 before and after being suspended from each of the spray pipes 3L, 3M, 3R.
It is rotatably clamped by 8 ・ 18. The spray tubes 3L, 3M, 3R are rotatably fixed in position as described later. Thus, as shown in FIG. 9, by rotating the front-rear rotating shaft 15, the spray pipe 3 is rotated back and forth through the front-rear swing link 17 and the sandwiching members 18, 18. The spray pipe 3 projects from the spray pipe 3. The nozzle holes 2, 2, ... That are to be swung back and forth with the spray tube 3 as a swing fulcrum. That is, it is possible to spray while swinging back and forth.

Among these, with respect to the fixing of the lower end portion of the front-rear swing link 17 to the front-rear rotating shaft 15, FIGS.
As shown in FIG. 11, vertical cylinder portions 15a, 15a are fixed to the left and right of the front-rear turning shaft 15, and the left and right lower end portions of the front-rear swing link 17 are fitted into the respective cylinder portions 15a, 15a. Part 15
Insert the bolt 16 into the bolt hole drilled in a ・ 15a,
The front and rear swing links 17 are restrained and fixed by the tips of the bolts 16 in the cylindrical portions 15a, 15a. It should be noted that a plurality of bolt holes are bored vertically in the vicinity of the lower end portions on both sides of the front-back swing link 17, and the bolt 16 is inserted into the bolt hole of the cylinder and the front-back swing link 17, and a nut is used. It may be fastened.

With such a fixing method, if the bolt 16 is loosened (in the latter fixing method, the bolt 16 is removed), the front-rear swing link 17 can freely slide in the tubular portion 15a. Therefore, the entire front and rear swing link 17 can be vertically adjusted. As described above, since the lower end fixing position of the front and rear swing link 17 can be adjusted up and down, the distance from the spray pipe 3 to the front and rear rotation shaft 15 can be adjusted, and accordingly,
The amount of back-and-forth rotation of the spray pipe 3 (the amount of back-and-forth swing of the injection hole 2) can be adjusted depending on the form of the crop.

Next, the horizontal swing structure of the spray pipe 3 will be described. Bearing portions 3a, 3a are provided on the left and right sides of the front portions of the spray pipes 3L, 3M, 3R, and a rotary shaft 19 is rotatably supported between the left and right bearing portions 3a, 3a. On the other hand, the L-shaped spray pipe fixing plates 20, 20, 20 are laterally fixed to the upper horizontal portion and the left and right inclined portions of the trapezoidal spray frame 21 when viewed from the front, and the tip end of the spray pipe fixing plate 20 is fixed. It has a tubular shape, and is provided around each rotary shaft 19. The spray frame 2
1 is fixed to the upper surface of the left and right swing plate 22, and
A bearing 24 is attached to the upper end of a shaft support frame 25 which is erected on the pedestal 13 in front of the vertical frames 14 and 14.
Is fixed in the front-rear direction, a left-right rotating shaft 23 is pivotally supported by the bearing 24, and both ends thereof are fixed to front-rear vertical portions of the left-right swing plate 22 as shown in FIG. In this way, the left / right swing plate 22 swings left / right with the left / right swing shaft 23 as a swing fulcrum, so that the spray frame 21 and the spray tube 3 integrated with the left / right swing plate 22 can swing left / right.

A swinging motor 30 is mounted on the pedestal 13.
The eccentric pin 29 fixed to the motor shaft of the swinging motor 30 and the pivot pin 22a projecting from the rear vertical portion of the left and right swinging plate 22 are provided at both ends of the horizontal link 26. Each is pivotal. In the middle of the horizontal link 26,
A plurality of pin holes are bored, and one of them is selected and the pivot pin 28 is fitted therein. On the other hand, a mounting portion 15b is provided so as to project in front of a middle portion of the front-rear rotating shaft 15, and a pivot pin 28 is fitted in a pin hole formed in the mounting portion 15b. Both ends of the vertical link 27 are provided with spherical joints, the upper end of which is the pivot pin 28 on the front-rear turning shaft 15 side, and the lower end of which is the pivot pin 2 on the horizontal link 26 side.
8 is pivotally supported so as to be rotatable back and forth.

With this configuration, when the swinging motor 30 is driven, the eccentric pin 29 pivot side end of the horizontal link 26 makes a circular motion about the motor shaft in a front view, and accordingly. The left and right rocking plates 22 and the spray frame 21, and the spray pipes 3 and the injection holes 2 horizontally rock. Then, in the midway portion of the horizontal link 26 pivotally supporting the lower end portion of the vertical link 27, the driving of the swinging motor 30 causes an elliptical motion of a left-right long diameter in a front view to cause the vertical link 27 to move. Although the upper end portion is freely rotatable to the left and right with respect to the pivot pin 28, the upper end portion moves up and down as the lower end portion moves up and down, and the front and rear ends via the pivot pin 28 that pivotally supports the upper end portion. The pivot shaft 15 is pivoted up and down, whereby the spray pipe 3 pivots back and forth, and the injection holes 2 ... Therefore, since the spray pipe 3 swings to the left and right and swings back and forth, the injection holes 2, 2 ... Move in a circular or elliptical shape, and the spray can reach up to the back side of the branches and leaves that the spray does not normally reach.

In addition, in the spray pipe 3 and the swing mechanism shown in FIGS. 3 and 8, the front and rear swing shaft links 1 are moved more from the spray pipe 3.
The parts up to the left / right swing plate 22, including the 7, forward / backward rotation shaft 15, the spray frame 21, etc., are in the central position of the amplitude range of the left / right swing, but the horizontal link 26 and the vertical link Note that No. 27 is a state when the spray pipe 3 is at the end of the amplitude on the left side in the horizontal swing. Further, FIG. 3 discloses the position of the spray pipe 3R (shown as 3R ') at the end of the amplitude on the right side and the position of the lower spray pipe 4R attached thereto.

In the spray pipe 3 which is swung as described above, as shown in FIG. 3, the lower ends of the left and right spray pipes 3L and 3R are
Lower spray pipes 4L and 4R (generally referred to as the lower spray pipe 4) having the injection holes 2.2 can be installed vertically. (Only the lower spray pipe 4R is shown in FIG. 3.) When the lower spray pipes 4L and 4R are attached, the left and right parts of the original arch-shaped spray pipe 3 are extended downward. Of course, the spray pipe 3 swings integrally with the lower spray pipes 4L and 4R attached. Also, of course, the lower spray pipes 4L, 4
It is also possible to attach only one of R.

The spray from the injection holes 2.2 of the lower spray pipe 4 is
When it is sprayed to a tree with lower branches and leaves near the surface of the ground, such as shrubs of citrus fruits, etc., as shown in FIG. 5, and as shown in FIG. It is effective when traveling. The spray control of the lower spray pipe 4 is performed by opening and closing cocks 32L and 32R described later in FIG. 4, and in the case of FIG. 6, by opening and closing the cocks.
It is possible to stop the spraying of the lower spray tube 4 on the upper inclined surface side and perform the spray of the lower spray tube 4 on the lower inclined surface side. In addition, the injection hole 2 is provided so that the spray can be made as low as possible.
One of the two is projected from the lower end of the lower spray pipe 4. (This is called a nozzle hole 2a.) Further, the lower spray pipe 4
Oscillates integrally with the spray pipe 3, so that the injection hole 2 of the lower spray pipe 4 also moves in a circle or an ellipse, and the spray reaches the back side of the branches and leaves in the low position.

As a problem with the lower spray pipe 4 thus mounted, first, since it is hung vertically below the machine body, when the front part of the machine body inclines upward (when traveling on a slope or when loading on a truck, This situation may occur.) There is a point of contact with the ground. Spray pipe 3
Oscillates to the left and right, so when the lower spray pipe 4 is attached, the lower limit position of the oscillating movement to the left and right must be taken into consideration. It is possible that the front part of the machine body may tilt upward and come into contact with the ground.
As shown in FIG.
It is located below the straight line L passing through the rear end of the chassis 9 from the rear end of a. The upper limit of the upward inclination of the front portion of the machine body is in a state where the rear end portion of the chassis 9 is in contact with the ground, that is, the state where the straight line L coincides with the ground surface.
It never touches the ground. On the other hand, depending on the type of fruit tree, some branches and leaves are placed near the ground, and it is desirable to set the injection hole position as low as possible. Therefore, the lower end of the lower spray pipe 4 may be located at a lower limit position of the lower spray pipe 4 when swinging to the left and right, above the straight line L and as close to the straight line L as possible. That is, the lowermost injection hole 2a is located at a position as low as possible within a range in which the ground does not contact when the front part of the machine body is tilted upward. Injection hole 2 shown in FIG.
a'denotes the position of the lowermost injection hole 2a when the lower limit position is reached when the spray pipe 3 and the lower spray pipe 4 swing to the left and right, and this position is directly above the straight line L. It is a position.

If the pest control device SW is of a wheel traveling type, that is, a model in which the wheels are directly grounded for traveling,
The straight line connecting the rear end of the grounding portion of the wheel arranged at the rearmost portion to the rear end of the chassis corresponds to the straight line L, and the injection hole 2a ′ at the lowermost end of the lower spray pipe 4 in the left-right swing is a straight line of this straight line. Place it in the upper position.

At the lateral position, as shown in FIG. 2, of the original arch-shaped spray pipes 3, the injection holes 2 projecting from the left and right spray pipes 3L and 3R are the same as those described above. As described above, it is in a state of being housed in the spray unit cover 1, and the outer end portion thereof does not project outward from the outer surface of the spray unit cover 1. Therefore, the driver only needs to confirm the outer surface position of the spray unit cover 1 to confirm the turning range of the rear part of the machine body when turning. And lower spray tube 4L ・ 4
In order to maintain this state even when R is attached, the outer end positions of the attached lower spray pipes 4L and 4R are
As shown in FIG. 2, it is located inside the lateral outer surface of the spray unit cover 1. That is, at the time of turning, if only the outer surface position of the spray unit cover 1 is confirmed and the player turns, the lower spray pipes 4L and 4L.
The situation where R gets caught in the lower branch or the like does not occur.

Finally, referring to FIG. 4, the chemical liquid supply structure to the spray pipe 3 and the lower spray pipe 4 will be described. As mentioned above,
The power for supplying the chemical liquid to the spray pipe 3 is due to the dynamic jet P arranged in the engine portion, and of course the chemical liquid is also supplied to the lower spray pipe 4 from the dynamic jet P. As shown in FIG. 4, the chemical liquid is supplied from the dynamic jet P to the spray pipes 3L, 3M and 3R independently, and the chemical liquid supply passages to the lower spray pipes 4L and 4R are respectively connected to the spray pipes. It is branched from the chemical liquid supply path to 3L and 3R. An opening / closing cock 31L, 31M, 31R is provided in the chemical liquid supply path to each spray pipe 3L, 3M, 3R, and spray control (spray or spray stop) of the three spray pipes 3L, 3M, 3R is performed. Can be done independently. For example, when the spraying is required only on the left side from the upper side, only the spraying on the spray tube 3R on the right side is stopped and the spraying work is performed.

Further, the lower side of each opening / closing cock 31L / 31R in the chemical liquid supply path to the left and right spray pipes 3L and 3R branches the chemical liquid supply path to the lower spray pipes 4L and 4R. Opening and closing cock 3 on each chemical supply path
2L and 32R are installed. Therefore, each lower spray pipe 4
The L and 4R can independently perform spray control as long as the chemical liquid is supplied to the spray pipes 3L and 3R to which they are attached.

With such a chemical solution supply structure, various spray patterns as shown in FIGS. 5 to 7 can be provided. First, if all the cocks for the five spray pipes are opened, as shown in FIG. 5, it is possible to spray around the control machine SW from above to the surface of the earth, and for fruit trees that have branches and leaves near the surface of the soil. Spraying is possible. Further, as shown in FIG. 6, if the left side is the mountain side and the right side is the valley side when viewed from the control machine SW that passes through the running path made by cutting through the orchard that is an inclined surface in a contour line, only the opening / closing cock 32L. Is closed, the spraying of the left lower spray pipe 4L is stopped, and only the right lower spray pipe 4R may be sprayed. The spray from the lower spray pipe 4R on the right side is convenient because it also affects the branches and leaves that grow in the lower position of the fruit trees on the valley side. Since the upper spray above the traveling path is not required, the opening / closing cock 31M is also closed and the spray pipe 3 is closed.
M spraying is stopped. Further, in the case of spraying from the lower spray pipe 4R on the right from the above-mentioned chemical liquid supply configuration,
The spray is always made from the right spray pipe 3R. That is,
While spraying the right lower spray tube 4R, the right spray tube 3R
You can't just stop. On the other hand, even if the left lower spray pipe 4L is sprayed, it does not affect the control work itself, but since the spray from the lower spray pipe 4L is not used for the control work at all, wasteful spraying will be continued. So
It is better to stop spraying in this way. Further, from the above-mentioned chemical liquid supply configuration, the left spray pipe 3L can be spray controlled regardless of spraying of the lower spray pipe 4L or spray stop, and to the branches and leaves of the fruit tree at a somewhat high position on the mountain side, Spraying can be performed by the spray pipe 3L.

The spray pattern shown in FIG.
This can be achieved by closing 2L / 32R and stopping the spraying of both lower spray pipes 4L / 4R. That is, by spraying from the original spray pipes 3L, 3M, 3R, it is possible to spray around the control machine SW from the upper side to the side. For example, when spraying on a shelf fruit tree as shown in FIG. It is possible to realize efficient spraying.

[0039]

As described above, the present invention has the following advantages. That is, according to the first aspect of the present invention, in the swinging spray type self-propelled control machine according to the present invention, the lower spray pipe is additionally installed so that the nozzle hole is located below the machine body, and It is possible to spray low citrus fruits and the branches and leaves of trees planted on the slope below from the contoured running path. Since spraying can be controlled independently, spraying can be done from the lower spray tube only on the side that needs spraying when spraying to a low position, so it is economical without wasting the chemical liquid in useless spraying. Is.

According to the second aspect of the present invention, in the crawler traveling type or the wheel traveling type, the lower limit position of the lower end of the lower spray pipe in the horizontal swing is the crawler traveling type in side view. If it is a wheeled type, it is above the straight line connecting the rear end of the grounding part of the wheel and the rear end of the chassis, so the front part of the aircraft tilts upward. Even if it does not come into contact with the ground, and even if it comes close to the straight line as much as possible, it is possible to spray as low a position as possible.

Further, as in claim 3, the outer end position of the lower spray pipe is set to be inside the outer surface of the main body cover, so that in turning, only the side surface of the cover which covers the spray pipe is set as the turning radius. It can be assumed that the lower spray pipe projects laterally from the cover at the time of turning and does not come into contact with trees, branches and leaves.

Further, as described in claim 4, the spray pipe itself is protected from water and chemicals by attaching an immersion cover to the spray pipe. Since the chemical liquid is dripped, the chemical liquid or water is also prevented from being dripped to the swinging essential portion below the spray pipe, and the durability of each member of the swinging essential portion can be improved. Further, by replacing the water-proof cover itself, the water-proof property of the spray pipe and the swingable portion can be maintained, and since the water-proof cover itself is inexpensive, it contributes to cost reduction.

[Brief description of the drawings]

FIG. 1 is a side view of an orbiting spray type self-propelled control machine according to the present invention.

FIG. 2 is a rear view of the same.

FIG. 3 is a front view showing a spray pipe 3 to which a lower spray pipe 4 is attached and a swinging mechanism thereof.

FIG. 4 is a chemical liquid supply circuit diagram for a spray pipe 3 to which a lower spray pipe 4 is attached.

FIG. 5 is a schematic front view showing a spray area in a state where the lower spray tube 4 is attached to both sides of the spray tube 3 and sprayed from above to near the ground surface.

FIG. 6 is a schematic front view showing a spray area in a state where the lower spray pipe 4 is attached to both sides of the spray pipe 3, and the inclined surfaces on both sides of the contour line running path on the inclined surface are sprayed.

FIG. 7 is a schematic front view showing a spraying area in a state where the lower spraying pipes 4 are attached to both sides of the spraying pipe 3 and sprayed on the shelf fruit trees.

FIG. 8 is a front view showing the spray pipe 3 with an immersion cover 5 attached and a swinging mechanism thereof.

FIG. 9 is a side view showing the spray pipe 3 and its swing mechanism.

FIG. 10 is a plan view of the same.

11 is a perspective view showing a fixed portion of the front-rear swing link 17 on the front-rear rotation shaft 15. FIG.

FIG. 12 is a side view of the engine with an exhaust cover 38 attached around the muffler pipe 35.

FIG. 13 is a front view of the same.

FIG. 14 is a perspective view showing a rotation braking means of a hose reel R for manual spraying.

[Explanation of symbols]

 1 spray part cover 2 injection hole 3 spray pipe 4 lower spray pipe 5 immersion cover 9 chassis 10 crawler

Front page continued (72) Inventor Chiaki Kadota 1-32, Chayamachi, Kita-ku, Osaka City, Osaka Prefecture Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Susumu Yamamoto 767 Umena, Mishima City, Shizuoka Prefecture New Delta Industrial Co., Ltd.

Claims (4)

[Claims] 1. A swinging spray type self-propelled control in which spray pipes having a plurality of injection holes are combined in the left and right and in the upper center to be arranged in an arch shape in a front view, and spraying is performed while swinging these spray pipes. In this machine, a swing spray type self-propelled control machine is characterized in that a lower spray pipe that can be independently spray controlled can be hung from the lower ends of the left and right spray pipes. 2. The oscillating spray type self-propelled control machine according to claim 1, which is of a crawler traveling type or a wheel traveling type and is disposed at the rear end or the rearmost part of the ground portion of the crawler in a side view. An oscillating spray type self-propelled extermination machine, characterized in that the lower end of the lower spray tube is oscillated at the right and left lower limit position at a position directly above a straight line connecting the rear end of the wheel contact portion to the rear end of the chassis. 3. The oscillating spray type self-propelled control machine according to claim 1, wherein the outer end of the injection hole attached to the lower spray pipe is arranged inside a cover that covers the spray pipe. Oscillating spray type self-propelled control machine. 4. A oscillating spray type self-propelled control machine, comprising a plurality of injection holes, which is formed in an arcuate shape when viewed from the front and is sprayed while oscillating. A rocking spray type self-propelled machine with a watertight cover attached in a protruding state.