JP3836961B2 - Boom sprayer splash prevention cover - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a configuration for preventing scattering of a chemical liquid sprayed from a nozzle hole of a boom sprayer.
[0002]
[Prior art]
Conventionally, a control vehicle equipped with a chemical tank, a power spray unit, and a boom sprayer for spraying a chemical on a work vehicle has been known. The spray section of the boom sprayer is a fixed nozzle having a linear multi-head opening having a length substantially equal to the vehicle width of the work vehicle, and a linear multi-head opening rotatably arranged at the left and right ends of the fixed nozzle. It consists of a side nozzle.
[0003]
[Problems to be solved by the invention]
However, when a chemical is sprayed from each of the fixed nozzles and the side nozzles of the spray part of the conventional boom sprayer, the chemicals may be scattered by the wind and cannot be reliably sprayed on the spray target. In some cases, the medicine may scatter to the worker, or may scatter to places other than the spray target, causing not only chemical damage but also wasteful spraying.
[0004]
[Means for Solving the Problems]
The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.
In the boom sprayer, the entire length of the nozzle hole extending in the left-right direction is covered by a scattering prevention cover including a front cover and a rear cover arranged in a “C” shape in a side view, and the front cover and the rear cover The front and rear pivot plates are fixed in a state of being pivotally supported on the stay above the nozzle hole, the front cover and the rear cover, In a configuration that covers the rear upper portion and forms a space for introducing a downward wind between the upper end portion of the front cover and the upper end portion of the rear cover, the pivot plate of the front cover and the rear cover A long hole is opened on the side surface of each stay, and a screw part is inserted at the intersection, and the pivot plate is screwed to the stay and the screw part, and the screw part is loosened, By moving the pivot plate along the long hole, the front cover upper end and the rear Change the distance between the bar upper end, further, by rotating the該枢supporting plate about said threaded portion, in which a changeable angle of inclination of the front cover and rear cover.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described.
1 is a perspective view of the boom sprayer with the anti-scatter cover of the present invention attached, FIG. 2 is a side view of the same, FIG. 3 is a side view of the anti-scatter cover attached to the side nozzle, and FIG. It is a side view of the attached scattering prevention cover.
[0006]
First, a small passenger work vehicle equipped with a spraying part 50 for spraying medicine will be described with reference to FIGS.
A pair of left and right front wheels 3, 3 is attached to the front part of the body frame 1 of the passenger work vehicle 2 via a front axle case, and a pair of left and right rear wheels 5, 5 are attached to the rear part via a rear axle case. ing. A driving unit 6 is disposed at the center of the vehicle body frame 1. An engine, a muffler, and the like are disposed behind the driving unit 6. A stay 10 is attached to the rear end of the vehicle body frame 1. The tank 11 is placed, and the outer periphery of the chemical solution tank 11 is fixed by the strips 14 and 14.
[0007]
The vehicle body frame 1 includes a pair of left and right main frames 20 and 20 extending in the front-rear direction, and a sub-frame formed in a substantially U shape extending between a front end portion and a rear end portion of the main frames 20 and 20. 21.
[0008]
The sub-frame 21 is a pipe-like frame, and is disposed at a position immediately above the front and rear wheels 3, 3, 5 and 5, and also serves as an outer peripheral portion of the vehicle body cover, and is lightweight and highly rigid.
[0009]
Further, the operating unit 6 has a handle column 31 standing at the front end of the main frames 20, 20, a handle 32 disposed at the upper end of the handle column 31, and a seat 36 disposed behind the handle 32. is doing. A guard 22 that is formed in a front portal structure is erected at a rear position of the seat 36.
[0010]
A boom sprayer mounting frame 40 is fixed to the front portion of the main frame 20. A sub-engine 41 and a power sprayer 42 that receives and drives power from the sub-engine 41 are placed on the frame 40. The power sprayer 42 and the chemical tank 11 are communicated with each other through a chemical solution transport hose 12 and a chemical solution return hose 13. A support frame 43 is erected at the rear part of the frame 40 for mounting the boom sprayer, and a support pipe 44 is erected at the center of the front part of the frame 40.
[0011]
The support frame 43 protrudes upward, the upper portion of the support frame 43 is positioned in front of the handle 32, and the chemical solution transfer switching valve 45 is placed on the upper end of the support frame 43. One end of a chemical solution hose 46 is connected to one side of the chemical solution transfer switching valve 45, and the other end of the chemical solution hose 46 is connected to a chemical solution discharge port of the power sprayer 42. A plurality of cocks (three in this embodiment) are formed on the upper part of the chemical solution transfer switching valve 45, and chemical hoses 49, 49, 49 are connected to the respective cocks, and the other ends of the chemical solution hoses 49, 49, 49 are provided. Is connected to a nozzle which will be described later. Then, an operator who rides on the seat 36 operates the cock of the chemical solution transfer switching valve 45 to feed the chemical solution into the chemical solution hoses 49, 49, 49, to stop, or to perform a switching operation.
[0012]
A support pipe 44 erected at the center of the front portion of the frame 40 is fitted with a slide pipe 47 slidably up and down, and the center of the spray portion 50 is fixed to the front surface of the slide pipe 47. The sliding pipe 47 is fixed at an appropriate position in the vertical direction so that the height of the spray unit 50 can be adjusted.
[0013]
As shown in FIG. 2, the spray section 50 includes a center frame 51, a side frame 52, a linear multi-headed center nozzle 53 and side nozzles 54, 54 attached to the frames 51, 52, 52. Has been.
[0014]
The central frame 51 is formed in a quadrangular shape when viewed from the side, a central nozzle 53 is attached along the front surface of the central frame 51, the above-described chemical hose 49 is connected to the left and right sides of the central nozzle 53, and chemicals are supplied to the central nozzle 53. Pumped. A side nozzle hole 54 is attached along the side frame 52. A chemical hose 49 is connected to the base side end of the side nozzle 54, and the chemical is pumped to the side nozzle 54.
[0015]
The end portions of the side frame 52 are placed on the left and right end portions of the central frame 51, and are pivotally supported by a pivot having an upper and lower axis, and the side injection port 54 is integrated with the side frame 52 in the horizontal direction. Can be rotated.
[0016]
As shown in FIG. 1, in the present invention, a scattering prevention cover 70 is disposed above the central nozzle 53 and a scattering prevention cover 73 is disposed above the side nozzle 54. As shown in FIGS. 3 and 4, the anti-scattering covers 70 and 73 are stays 76 at appropriate intervals from the upper part of the central frame 51 (or the side frame 52) toward the front upper side (above the nozzle holes 53 and 54).・ 76 ... (or stays 77, 77 ...) are erected. Anti-scattering covers 70 and 71 are provided at the upper end of the stay 76 (77). The stays 76, 76... (Or stays 77, 77...) Are erected on the upper part of the central frame 51 (or the side frame 52). You can also
[0017]
As shown in FIG. 4, the anti-scattering cover 70 disposed in the center portion is formed in a “C” shape in a side view by a front cover 71 and a rear cover 72. As shown in FIG. 1, the front cover 71 and the rear cover 72 are formed to have a length that substantially matches the lateral length of the central nozzle 53. The pivot plates 71a and 72a are projected from the upper part of the inner surface of the front cover 71 and the inner surface of the rear cover 72 toward the upper part of the stay 76, respectively. Long holes 71b and 72b are opened in the respective pivot plates 71a and 72a. Superposing the said long hole 71b and the elongated hole 72b in the stay 76 side, and insert the screw portion of the thumbscrew 78 at the intersection that has the overlapped, screwed pivoted plate 71a · 72a in the stay 76 and the thumbscrew 78 The front cover 71 and the rear cover 72 are fixed to the stay 76. A groove 72 c is formed in the left and right center of the rear cover 72 so as to avoid interference between the rear cover 72 and the sliding body 47.
[0018]
The front cover 71 and the rear cover 72 of the anti-scattering cover 70 cover the front upper part and the rear upper part of the central nozzle 53, and the lower part is between the upper part of the front cover 71 and the upper part of the rear cover 72. A space for introducing the wind toward is formed. Therefore, the chemical liquid at the moment of spraying does not wind from the side, and the chemical liquid can be sprayed on the spray object.
[0019]
Similarly, as shown in FIG. 3, the anti-scattering cover 73 disposed above the side nozzle hole 54 is formed in a “C” shape in a side view by a front cover 74 and a rear cover 75. As shown in FIG. 1, the front cover 74 and the rear cover 75 are formed to have a length that substantially matches the left and right lengths of the side nozzle holes 54. The pivot plates 74a and 75a are projected from the upper part of the inner surface of the front cover 74 and the upper part of the inner surface of the rear cover 75 toward the upper part of the stay 76, respectively. Long holes 74b and 75b are opened in the pivot plates 74a and 75a, respectively. The long hole 74b and the long hole 75b are overlapped on the side surface of the stay 77, and the threaded portion of the thumbscrew 78 is inserted at the overlapped intersection, and the pivot plates 74a and 75a are screwed by the stay 77 and the thumbscrew 78. The front cover 74 and the rear cover 75 are fixed to the stay 77.
[0020]
By the front cover 74 and the rear cover 75 of the anti-scattering cover 73, the front upper side and the rear upper side of the side nozzle hole 54 are covered, and between the upper end part of the front cover 74 and the upper end part of the rear cover 75, A space for introducing the downward wind is formed. Therefore, the chemical liquid at the moment of spraying does not wind from the side, and the chemical liquid can be sprayed on the spray object.
[0021]
Further, the front cover 71 is moved by loosening the thumbscrew 78 and moving the pivot plates 71a and 72a (or 74a and 75a) along the long holes 71b and 72b (or 74b and 75b) in the thumbscrew 78. (74) The distance between the upper end portion and the upper end portion of the rear cover 72 (75) is changed to adjust the amount of wind introduced from above. Further, by rotating the pivot plates 71a and 72a (or 74a and 75a) around the thumbscrew 78, an inclination angle between the front cover 71 and the rear cover 72 (front cover 74 and rear cover 75 and The inclination angle of the front cover 71 (74) and the upper end of the rear cover 72 (75) are changed to adjust the amount of wind introduced from above and from the upper side. The spread of the wind that flows downward between the front cover 71 and the rear cover 72 is adjusted, and the spray width of the chemical solution can be widened or narrowed. However, the front cover 71 (74) and the rear cover 72 (75) may be V-shaped and pivoted between the two. It is also possible to arrange only around the nozzle holes 53 and 54.
[0022]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
In the boom sprayer, the entire length of the nozzle hole extending in the left-right direction is covered with a scattering prevention cover including a front cover and a rear cover arranged in a “C” shape in a side view, and the front cover and the rear A pivot plate is fixed to the inner peripheral surface of the cover, and the front and rear pivot plates are fixed in a state of being pivotally supported on the stay above the nozzle hole, and the front upper portion of the nozzle hole is formed by the front cover and the rear cover. Since the space for introducing the downward wind is formed between the upper end portion of the front cover and the upper end portion of the rear cover, the spray nozzle and the moment when sprayed directly from the nozzle The jet does not hit the wind, the chemical solution is not scattered, and the chemical solution can be reliably sprayed on the spray target.
Further, the front upper part 74 and the rear upper part 75 of the side cover 54 are covered by the front cover 74 and the rear cover 75 of the anti-scattering cover 73, and between the upper end part of the front cover 74 and the upper end part of the rear cover 75. Further, since the space for introducing the downward wind is formed, the chemical liquid at the moment of spraying is not blown from the side, and the chemical liquid can be sprayed on the spray target.
[0023]
Further, a long hole is opened in the pivot support plate of the front cover and the rear cover, each long hole is overlapped on the side surface of the stay, a screw part is inserted at the intersection, and both the pivot is formed by the stay and the screw part. The interval between the upper end of the front cover and the upper end of the rear cover is changed by screwing the support plate, loosening the screw portion, and moving the pivot support plate along the elongated hole, By rotating the pivot plate around the screw portion, the inclination angle of the front cover and the rear cover can be changed, so that the distance between the front cover and the upper end of the rear cover can be adjusted. It is possible to adjust the amount of wind introduced from the gap , adjust the spread angle of the jet discharged from the nozzle, and adjust the amount of sprayed chemical on the spray target.
Furthermore, since all the mouths for spraying the chemicals at the nozzle holes are covered with the same cover, it is possible to unify the spread of jets discharged from all the mouths by changing the inclination angle of one cover. For example, adjustment work becomes easier as compared with a configuration in which a cover for preventing scattering is provided for each nozzle.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which a scattering prevention cover of the present invention is attached to a boom sprayer.
FIG. 2 is a side view of the same.
FIG. 3 is a side view of a scattering prevention cover attached to a side nozzle hole.
FIG. 4 is a side view of a scattering prevention cover attached to a central nozzle.
[Explanation of symbols]
2 Passenger work vehicle 6 Driving section 50 Central nozzle 54 Side nozzle 70/73 Splash prevention cover 71/74 Front cover 72/75 Rear cover 71a / 72a / 74a / 75a Pivoting plate

Claims (1)

In the boom sprayer, the entire length of the nozzle hole extending in the left-right direction is covered by a scattering prevention cover including a front cover and a rear cover arranged in a “C” shape in a side view, and the front cover and the rear cover The front and rear pivot plates are fixed in a state of being pivotally supported on the stay above the nozzle hole, the front cover and the rear cover, In the configuration that covers the rear upper part and forms a space for introducing the downward wind between the upper end part of the front cover and the upper end part of the rear cover ,
A long hole is opened in the pivotal support plate of the front cover and the rear cover, each elongated hole is overlapped on the side surface of the stay, a screw part is inserted at the intersection, and both pivotal support plates are formed by the stay and the screw part. The distance between the upper end of the front cover and the upper end of the rear cover is changed by moving the pivot plate along the elongated hole. A boom sprayer scattering prevention cover characterized in that the tilt angle of the front cover and the rear cover can be changed by rotating the pivot support plate around the portion .

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