JP2550667Y2 - Elevation angle adjustment device for nozzle rotation axis in pesticide spraying device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for adjusting the elevation angle of a nozzle rotation axis in a pesticide spraying apparatus suitable for spraying a chemical on crops such as fruit trees which spread over a crown.

[0002]

2. Description of the Related Art Conventionally, in the case of spraying chemicals on crops such as fruit trees, which spread over a tree canopy, it has been effective to spray the medicine both vertically and horizontally. For this reason, when performing a spraying operation with a self-propelled spraying machine, the spraying nozzle is rotated in the axial direction, and the spraying is performed by rotating the spraying nozzle in a circular shape with respect to the target crop. is there. In addition, as such a spreader, a support mast erected on the traveling body,
There is a type in which a spray nozzle for spraying a medicine toward the side of a traveling body is provided such that its arrangement and direction can be adjusted.

[0003]

In the above-mentioned conventional spraying apparatus, when the former spray nozzle is rotated in the axial direction, the driving mechanism thereof is complicated, and the latter is supported by the support mast. When the spraying nozzle for spraying the medicine to the side is provided so that its arrangement and direction can be adjusted, the height of the canopy is increased when the traveling body turns headland and sprays the next row of orchards. When the pod spread changes, it is necessary to adjust the arrangement and direction of the spray nozzles in accordance with the change, and the adjustment operation is troublesome. The present invention has been made to solve the above problems.

[0004]

In order to achieve the above object, the present invention provides a spraying nozzle for spraying a medicine to a support mast erected on a traveling body in a lateral direction in a traveling direction of the traveling body. In the equipped spraying device, the support mast is supported on a support frame provided on the traveling body so as to be rotatable in the left-right direction,
With respect to this support mast, a plurality of rotating arms equipped with a spray nozzle at the end on the nozzle side are rotatable up and down,
And supported vertically at intervals, a plurality of rotating arms are linked by a link rod, and the supporting mast is pivotally supported at an intermediate portion thereof so that the driving arm can be rotated vertically.
By connecting the distal end of the drive arm to the link rod and rotating the base end of the drive arm, the pivot arm is pivoted up and down, and at the same time, the support mast is pivoted left and right, The tip of the spray nozzle is caused to rotate and the relative position between the drive arm and the drive arm side of the link rod connected to the rotation arm is changed, or the drive arm and the rotation arm are connected. By changing either the length of the link rod to be connected, or the relative position between the support mast and the end support position of the support arm on the support mast side, the rotation center of the rotation arm is selected. It is characterized in that the angle of intersection between the line and the support mast can be changed.

[0005]

According to the above construction, by rotating the base end side of the drive arm, the plurality of rotating arms are vertically and interlockedly rotated by the link rod, and simultaneously, the support mast is horizontally rotated. Then, since the tip of the spray nozzle rotates, the medicine is sprayed from above and below and left and right on a crop such as a fruit tree having a wide canopy, so that a highly accurate spraying operation is performed on the whole crop. Also, changing the relative position between the drive arm side of the link rod on the drive arm side and the drive arm,
By changing the length of the link rod linking the drive arm and the rotating arm, or changing the relative position between the end supporting position of the supporting arm on the support mast side and the supporting mast, etc. Since the intersection angle between the rotation center line and the support mast can be changed, the direction of the spray nozzle can be easily and quickly adjusted even if the relative position between the running body and the crop changes, and the spray accuracy can be improved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be specifically described below with reference to the accompanying drawings. In FIG. 5, a spraying device denoted by reference numeral 1 is mounted on the self-propelled vehicle body 2 and used for controlling pests such as orchards (for example, citrus orchards). As shown in the drawing, support masts 5 are attached to support arms 3a, 3a which are vertically fixed to the self-propelled vehicle body 2 and vertically protrude from a support frame 3 which is vertically mounted on the self-propelled body 2 via hinge portions 4, 4. It is rotatably supported. A plurality of upper and lower stages (in the drawing, three stages, but actually five stages) in which a spray nozzle 6 is mounted on the support mast 5 at each end so as to adjust the mounting angle thereof with a nozzle mounting bolt 6a. , Which may be further increased or decreased). The rotating arm 7 is supported rotatably in the up-down direction via a shaft 8 and is spaced apart up and down. , And are linked by a link rod 9 via pins 7a, 7a so as to move up and down.

Each of the spray nozzles 6 is laterally (in a direction orthogonal to) the moving direction of the self-propelled vehicle body 2 (the direction of the arrow in FIG. 5).
, And the mounting angle of each spraying nozzle 6 can be adjusted by the nozzle mounting bolt 6a as described above. The link rod 9 is pivotally supported by a pin 7a and can be adjusted in length. The spray nozzle 6, the rotating arm 7, the link rod 9, and the like are provided on both left and right sides of the support mast 5.

A motor support plate 10 is fixedly mounted on the support frame 3. A drive arm 13 and a rotation motor 11 are supported on the motor support plate 10. The output shaft 11a of the motor support plate 10 extends through the motor support plate 10. The eccentric rotation arm 12 is attached to the output shaft 11a. The eccentric rotary arm 12 has a sliding shaft 13 a slidably fitted to a drive arm 13 of a predetermined length supported by a shaft 14 at an intermediate portion so as to be able to rotate vertically with respect to the support mast 5. It is pivoted to the end.

Motors 15 and 15 for adjusting the elevation angle are fixed to opposite upper and lower positions on both ends of the drive arm 13.
The output shafts of the motors 15, 15 have a crank arm 16.
The crank arm 16 is attached to the link rod 1.
One end of 7 is pivoted. The other end of the link rod 17 is a bell crank 1 supported by a drive arm 13 by a shaft 18.
9 and the other end of the bell crank 19 is pin 2
0 is linked to the link rod 9. The length of the link rod 17 can be adjusted. And, as shown in FIG.
The left motor 15 is capable of adjusting the elevation angle of the right spray nozzles 6, 6,..., And the right motor 15 is capable of adjusting the elevation angle of the left spray nozzles 6, 6,.

On the other hand, the self-propelled vehicle body 2 has a crawler 21 as a traveling device, a control seat 22 is covered with an upper cover 23 and a front cover 24 which are cabins, and the front cover 24 has a transparent plate for visibility. Further, a hood 25 as a view keeping device is provided above the transparent plate. As shown in FIG. 6, the hood 25 has a front cover 24, that is, the inclination angle α1 of the transparent plate is larger than 30 degrees, α1> 30 °, and the apparent length l of the hood with respect to the length L of the transparent plate. Is larger than 1/3 of the length L of the transparent plate and l> １ ／ L, and the interval T from the lower end of the hood 25 to the transparent plate at that time is set to be larger than 10 cm and T> 10 cm. I have.

With the hood 25 and the cabin set as described above, even when the chemical liquid sprayed by the spraying device 1 may flow from the rear of the machine to the front while the self-propelled vehicle body 2 is spraying the medicine, the steering operation is performed. , Front cover 2
The upper cover 4 is not directly hung but drip-proof, so that the field of view of the front cover 24 is secured. A chemical tank 26 and a chemical pump (not shown) are mounted on the vehicle body between the cabin of the self-propelled vehicle body 2 and the spraying device 1. In this embodiment, the chemical liquid tank 26 stores 350 L of an agricultural chemical liquid. In the vicinity of the control seat 22, an engine is mounted, and a control device for controlling the spraying device 1 is provided in addition to various control devices.

In an apparatus having such a configuration, in a device for adjusting the elevation angle of a nozzle rotating shaft in an agricultural chemical spraying device, a self-propelled vehicle body (self-propelled spraying machine) 2 equipped with a spraying device 1 is attached to, for example, an orchard ( By slowly moving the passage between the crowns of the (citrus orchard) and at the same time, by operating the spraying device 1, the chemical solution pumped by the chemical solution pump is preset from the spray nozzles 6, 6,. It is sprayed vigorously at an elevated elevation angle and sprayed on the canopy of the fruit trees on both sides.

At this time, when the motor 11 rotates, the eccentric rotary arm 12 rotates while drawing a circular locus indicated by a two-dot chain line in FIG. 1, and the support mast 5 is rotated via the sliding shaft 13a, the drive arm 13 and the shaft 14. Is reciprocating and rotating arm 7 in the left-right direction
Moves conically, and the spray nozzles 6, 6 ... rotate in a circular locus, spraying chemicals from above, below, left and right directions to the canopy of the spreading fruit tree, and evenly controlling. Is performed.

Further, even when the spraying machine turns on the headland at the edge of the field to perform the spraying operation on the next fruit tree row, the chemical spraying is performed by adjusting the rotation center axis of each spraying nozzle 6, 6. Therefore, the control work can be performed evenly on the right and left fruit trees, and it is not necessary to adjust the arrangement and the direction of the spray nozzle each time as in the related art, and the work can be performed efficiently.

In particular, in the present invention, when the rotation angle θ1 of the drive arm 13 is fixed, the rotation arm 7 rotates conically around the shaft 8 and the rotation center axis intersects the support mast 5. Is θ2, and as shown in FIG. 7 and FIG. There are the following three methods as specific means. Either change the relative position between the drive arm 13 and the support position 20 on the drive arm (sliding shaft 13a, drive arm 13) side of the link rod 9 linked to the rotation arm 7, or move the drive arm 13 and the rotation arm 7 together. By selecting either the length of the link rod 17 to be linked or the relative position between the end support position 8 of the rotating arm 7 on the side of the support mast 5 and the support mast 5, the rotation is selected. By changing the intersection angle between the rotation center line of the moving arm 7 and the support mast, the elevation angles of the spray nozzles 6, 6,...

By changing the length of the link rod 9 linked to the rotary arm 7, the relative position between the drive arm 13 and the shaft support position 28 on the drive arm (sliding shaft 13a, drive arm 13) side is changed. In an embodiment (second embodiment) of the means capable of performing the above-mentioned operation, as shown in FIG.
Is pivotally supported at one end, and the other end is connected to the pivot arm 7 by a pin 7a.
An electric cylinder 27 is provided in the middle of the link rod 9a pivotally supported by. In the second embodiment, as shown in FIG. 10 and FIG. 11, the elevation angle of the spray nozzles 6, 6,.

FIGS. 12 and 13 show an embodiment (third embodiment) in which the relative position between the end supporting position 8 of the rotating arm 7 on the side of the support mast 5 and the support mast 5 is changed. In the third embodiment, a movable frame 29 slidable up and down on the support mast 5 via a support bolt 30 is provided, and an electric motor is provided between the movable frame 29 and a support table 31 provided on the support mast 5. Cylinder 3
2 is interposed. In the third embodiment, as shown in FIG. 14, the electric cylinder 32 can be arbitrarily adjusted by extending and retracting the electric cylinder 32 in the control seat 22.

[0018]

As described above, according to the apparatus for adjusting the elevation angle of the nozzle rotating shaft in the agricultural chemical spraying device of the present invention, a plurality of rotating arms are linked by rotating the base end side of the drive arm. At the same time, the support mast is rotated to the left and right, and the tip of the spray nozzle is rotated. By spraying the medicine from the left and right directions, effective spraying and controlling work can be performed with high accuracy on the entire crop.

The relative position between the drive arm side of the link rod and the drive arm may be changed, the length of the link rod connecting the drive arm and the rotation arm may be changed, or the support mast of the rotation arm may be changed. By changing the relative position between the side end pivot position and the support mast, the angle of intersection between the rotation center line of the rotation arm and the support mast can be changed, so that the relative position between the running body and the crop changes. However, the direction of the spray nozzle can be easily and quickly adjusted, and the spraying accuracy can be improved.

Further, the structure for rotating the rotating arm and the support mast is simple, the number of parts is small, the production can be performed at low cost, and the improvement of the rotation speed of the nozzle and the expansion and contraction of the rotation angle can be achieved. Easy to do.

[Brief description of the drawings]

FIG. 1 is a partial front view of a main part of a first embodiment of the present invention.

FIG. 2 is a partial side view of the main part.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

4A is a cross-sectional view taken along the line BB of FIG. 2, and FIG.
It is CC sectional view taken on the line of FIG.

FIG. 5 is a perspective view of the entire spraying device.

FIG. 6 is a side view of the spraying device front cover.

FIG. 7 is an operation explanatory view of a main part of the first embodiment.

FIG. 8 is an operation explanatory view of a main part of the first embodiment.

FIG. 9 is a partial side view of a main part of a second embodiment of the present invention.

FIG. 10 is an operation explanatory view of a main part of the second embodiment.

FIG. 11 is an operation explanatory view of a main part of the second embodiment.

FIG. 12 is a partial side view of a main part of a third embodiment of the present invention.

FIG. 13 is a partial plan view of a main part of the third embodiment.

FIG. 14 is an operation explanatory view of the third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spreading apparatus 2 Self-propelled vehicle body 3 Support frame 3a Support arm 4 Hinge part 5 Support mast 6 Spray nozzle 6a Nozzle mounting bolt 7 Rotating arm 7a Pin 8, 14, 18, 28 Shaft 9, 9a, 17 Link rod 10 Motor support Plate 11 Support mast rotation motor 11a Output shaft 12 Eccentric rotation arm 13 Drive arm 13a Sliding shaft 15 Elevation angle adjustment motor 16 Crank arm 19 Bell crank 20 Pin 21 Crawler 22 Pilot seat 23 Upper cover 24 Front cover 25 Hood 26 Chemical tank 27, 32 Electric cylinder 29 Moving frame 30 Support bolt 31 Support base

Claims (1)

(57) [Scope of request for utility model registration] 1. A spraying apparatus provided with a spray nozzle for spraying a medicine laterally in a traveling direction of a traveling body on a support mast erected on the traveling body, wherein the support mast is provided on the traveling body. A plurality of rotating arms, which are rotatably supported in the left and right direction on the support frame and have a spray nozzle attached to the end on the nozzle side, are vertically rotatable with respect to the supporting mast, and are vertically spaced. Open and support,
A plurality of rotating arms are linked by a link rod, and a drive arm is pivotally supported at an intermediate portion of the support mast so that the drive arm can be rotated vertically, and a tip end of the drive arm is linked to the link rod. By rotating the base end of the driving arm, the rotating arm is rotated in the vertical direction, and simultaneously, the support mast is rotated in the left and right direction so that the tip of the spraying nozzle rotates. Whether to change the relative position between the drive arm and the drive arm side of the link rod connected to the rotating arm and the drive arm, or to change the length of the link rod connecting the drive arm and the rotary arm;
Changing the relative position between the end of the pivot arm on the support mast side and the relative position of the support mast can change the intersection angle between the pivot center line of the pivot arm and the support mast. A device for adjusting the elevation angle of a nozzle rotating shaft in a pesticide spraying device, characterized in that it is constructed as described above.