JPH0422865Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a chemical spraying device used as a wide spreader for spraying chemicals in fields, etc., and particularly relates to a mechanism for adjusting the chemical spraying width of the chemical spraying device. It is something.

[Conventional technology]

FIG. 10 shows a telescoping boom in a conventional chemical spraying device, and the telescoping boom device 101 consists of a support boom 102 and a slide boom 103 that can slide on this support boom 102. It is suspended by passing through a hose guide 105 fixed below the boom device 101, and the spraying holes 106 are perforated at appropriate intervals in the longitudinal direction, and the transferred powder and granules are directed toward the spraying holes 106. It has a collision plate 107 that directs the collision. The tension fitting 110 is a slide boom 103
A tensile play that is fixed to the tip of the 111
A tension coil spring 112 is attached to the lower end of the
Both ends thereof are hooked onto the tip of the spray hose 104 and a tension fitting 110, respectively, and pull the spray hose 104 toward the tension plate 111 to prevent the spray hose 104 from loosening.

[The problem that the idea attempts to solve]

In the conventional device, the spraying hose 104 hangs down when the telescopic boom device 101 is not at its maximum extension, making it difficult to spray, making it difficult to adjust the spraying width. In addition, the maximum spreading width is less than the length of the telescopic boom device when it is fully extended, and in order to obtain the desired spreading width, it is necessary to lengthen the extending boom device, which increases the weight of the machine and requires a tractor. There is a disadvantage of increased horsepower.

The purpose of this invention is to provide a chemical dispersion device that can adjust the dispersion width and obtain a dispersion width that is greater than the maximum extension length of the telescopic boom device.

[Means to solve the problem]

The chemical dispersion device according to this invention includes a traveling device,
a transfer device for transferring a drug from a drug tank mounted on the traveling device; a telescoping boom device having a support boom and a slide boom slidable on the support boom and extendable to the side of the traveling device; A spraying hose connected to the discharge side of the transfer device and having a plurality of spraying holes arranged in a row in the longitudinal direction and suspended from the telescopic boom device, and a spraying hose that is rotatably connected to the base end side of the slide boom a wire guide roller that is pivotally supported; an upper hose guide roller that is rotatably supported on the tip end of the slide boom; and a bracket that extends downward from the tip end of the slide boom. a freely pivoted lower hose guide roller; a tension coil spring connected on one side to the distal end of the spray hose extending through the lower hose guide roller and the upper hose guide roller; and the tension coil spring. The wire guide roller connected to the other side is folded back and a tension wire is latched to the tip of the support boom. And the relative positions of the upper and lower hose guide rollers are adjustable.

[Effect]

As the telescopic boom device extends, the wire guide roller moves toward the tip of the support boom by an amount equal to the amount of extension of the telescopic boom device, and the tension wire is paid out from the wire guide roller toward the tip of the slide boom. . As a result, the spraying hose is let out below the telescopic boom device via the upper and lower hose guide rollers.

Conversely, when the telescopic boom device is retracted, the wire guide roller moves away from the tip of the support boom by an amount equal to the amount of contraction of the telescopic boom device, and the tension wire is paid out from the wire guide roller to the tip of the support boom. , the spray hose is drawn in from below the telescopic boom device through lower and upper guide rollers.

The length of the spray hose below the telescopic boom arrangement is therefore automatically adjusted to correspond to the length of the telescopic boom arrangement. In addition, by folding back the spraying hose at the upper hose guide roller,
The air inside the hose is cut off, and the medicine is only transferred to the upper hose guide roller. As a result, when the telescopic boom device is extended and retracted to perform spraying work at any position, the spraying is performed from the spraying hole of the spraying hose located between the upper hose guide roller and the lower hose guide roller, and the spraying width is The length corresponds to the amount of expansion and contraction of the telescopic boom device.

The spray holes of the spray hose located in the range between the lower hose guide roller and the upper hose guide roller are oriented diagonally downward toward the tip of the boom.
The chemical sprayed from the spray holes located in this range is sprayed below and beyond the tip of the slide boom.

〔Example〕

An embodiment of this invention will be described below based on the accompanying drawings.

FIGS. 5 and 6 schematically show the entire scattering device for dispersing powder and granules, in which a tractor 1 as a traveling device is equipped with a chemical tank and a blower 2 as a transfer device at the rear. A telescopic boom device 3 extending in the horizontal direction includes a support boom 4 rotatably coupled to the base end around a vertical axis, and a slide boom 5 slidably supported by the support boom 4. It can be expanded and contracted horizontally. The flexible spray hose 6 connects to the telescopic boom device 3
, is suspended below the telescopic boom device 3, and is connected to the discharge port 7 of the blower 2 at its base end. The powder in the drug tank is transferred to the spray hose 6 by the blower 2. Telescopic boom device 3
is extended in the lateral direction of the tractor 1, as shown by the solid line in FIGS. 5 and 6, when distributing powder and granules; at other times, it is shortened, and extends to the side of the tractor 1, as shown by the broken line in FIG. closed in a position extending along the section.

FIGS. 7 and 8 are a front view and a plan view of the boom portion, respectively. The take-up drum 11 is disposed within the base end of the support boom 4 and is driven by a hydraulic motor or the like, and moves the slide boom 5 relative to the support boom 4 via the take-up wire 12 to move the telescopic boom device 3. Expand and contract. The spraying hose 6 has a spraying hole 13 that spouts powder and granules and a collision plate 19 that directs the propellant transferred within the spraying hose 6 toward the spraying hole 13 in a row at appropriate intervals in the longitudinal direction, and has a supporting boom. 4
The hose is passed through hose guide rollers 14 fixed at appropriate intervals in the longitudinal direction at the lower part of the hose. The upper hose guide roller 15 is rotatably supported at the tip of the slide boom 5 around a horizontal axis, and the lower hose guide roller 16 is attached to the bracket 1 fixed to the lower tip of the slide boom 5 at its upper end.
8 is rotatably supported around a horizontal axis.

As shown in FIG. 9, the distal end of the spraying hose 6 is made into a flat plate, has a plurality of rows of heat seals 17 extending in the transverse direction, is folded back at the distal end about the base of a triangular connecting ring 21, and is further A plurality of rows of heat seals 17 are formed and attached.

Returning to FIGS. 7 and 8, a tension plate 22 and a roller mounting plate 23 are fixed to the tip of the support boom 4 and the base end of the slide boom 5, respectively, and the wire guide roller 24 is fixed to the roller mounting plate 23. It is rotatably supported on a shaft 28. The tension wire 25 is fitted with a tension screw 26 at one end, folded back around the wire guide roller 24, and fitted with a hook 27 at the other end.
The tension screw 26 is screwed into the tension plate 22 and fastened to the tension plate 22 by a nut 32, and the tension coil spring 33 is hooked to the connecting ring 21 and the hook 27 at both ends. The stopper guide 34 is disposed at a predetermined distance from the wire guide roller 24 toward the tip of the slide boom 5, and is fixed to the slide boom 5 via a bracket 35, and the tension wire 25 is passed through the stopper guide 34.

In FIGS. 7 and 8, the slide boom 5 shows the longest and shortest positions of the telescopic boom device 3 with solid lines and broken lines, respectively, and the longest position shows the part of the spray hose 6 that is not heat-sealed 17. The tip reaches the lower hose guide roller 16, and the heat-sealed portion 17 is folded back via the lower and upper hose guide rollers 16, 15, and the tip reaches the upper surface of the tip of the slide boom 5. has reached.

During the extension process of the telescopic boom device 3, the slide boom 5 is pulled out from the support boom 4, and the wire guide roller 24 approaches the tension plate 22 by the amount of extension of the telescopic boom device 3. As a result, the tension wire 25 is let out from the wire guide roller 24 toward the tip of the slide boom 5, and the spray hose 6 is let out from the upper and lower guide rollers 15, 16 to the lower part of the telescopic boom device 3, and then The length of the spray hose 6 below the device 3 is adjusted and maintained at a length corresponding to the length of the telescopic boom device 3.

During the retraction process of the telescopic boom device 3, the slide boom 5 is retracted into the support boom 4, and the wire guide roller 24 is separated from the tension plate 22 by the amount by which the telescopic boom device 3 is retracted. As a result, the tension wire 25 is retracted from the wire guide roller 24 toward the tension plate 22, and the spray hose 6
is retracted above the slide boom 5 through the upper and lower hose guide rollers 15 and 16, and the length of the spray hose 6 below the telescopic boom device 3 corresponds to the length of the telescopic boom device 3. The length will remain adjusted.

When moving the tractor 1, the telescopic boom device 3
is contracted and closed, and the deflection of the spray hose 6 that occurs at this time is removed by the tension coil spring 33. The stopper guide 34 is arranged so that the tension wire 25 does not move around the wire guide roller 24 due to vibration or the like.
prevent it from coming off.

1 and 2 are detailed side and front views of the distal end of the telescopic boom device 3, in which a guide groove 41 extends over a predetermined range along the longitudinal direction at the lower side of the slide boom 5, and a guide groove 41 extends over a predetermined range along the longitudinal direction, and 42 is the guide groove 4
1, and is slidably disposed within the holder 1 so as to be prevented from rotating. The metal fitting 43 is connected to the guide groove 41 of the slide boom 5.
The upper end of the bracket 18 is fixed to the upper end of the bracket 18, and the bracket 18 is fixed at any position within the predetermined range by fitting the bolt 44 to the nut 42. The upper hose guide roller 15 includes a cylindrical central portion 45 made of rubber;
5 and tapered end portions 46 which are disposed on the inside and outside of 5 and whose outer diameter gradually decreases toward the ends. The collision plate 19 located at the center in the width direction of the spray hose 6 hits the elastic cylindrical center portion when passing the upper hose guide roller 15, thereby avoiding damage.

When the telescopic boom device 3 is set to an arbitrary length for spraying, the powder and granules transferred in the spraying hose 6 pass through the lower hose guide roller 16, but the air is not blown by the upper hose guide roller 15. Since it is blocked, movement at the upper hose guide roller 15 is prevented. Therefore, powder and granules are ejected from the dispersion holes 13 in the range from the base end of the dispersion hose 6 to the upper hose guide roller 15. As mentioned above, the amount of feed of the spraying hose 6 is adjusted according to the amount of expansion and contraction of the telescopic boom device 3, and as a result, the range in which powder and granules are ejected changes.
It becomes possible to change according to the expansion and contraction of. Furthermore, since the dispersion holes 13 in the range between the upper hose guide roller 15 and the lower hose guide roller 16 are directed diagonally downward rather than directly downward in the vertical direction, the powder and granules from the dispersion holes 13 in this range are directed to the slide boom. Spread outward beyond the tip of 5. Upper hose guide roller 15 and lower hose guide roller 1
Since the inclination angle of the spray hose 6 in the range between 6 and 6, that is, the direction of the spray hole 13, changes depending on the mounting position of the upper end of the bracket 18 on the slide boom 5, the fixing position of the metal fitting 43 on the slide boom 5 is changed. This makes it possible to adjust the maximum reach of the powder or granule, that is, the spreading width.

Figure 3 shows a modification of Figure 1, with bracket 1
The upper end of the locking plate 8 is swingably supported by the metal fitting 43 via a pivot 50 , and the locking plate 51 is fixed to the lower surface of the metal fitting 43 and has an arcuate groove 52 centered on the pivot 50 . The bolt 53 is inserted through the bracket 18 and the arcuate groove 52, and is tightened with a nut (not shown). By changing the tightening position of the bolt 53 in the arcuate groove 52, the inclination angle of the bracket 18, and therefore the spraying hole 13 in the range between the upper hose guide roller 15 and the lower hose guide roller 16, can be discharged. The orientation of the powder and granule can be adjusted.

FIG. 4 shows another modification of FIG. 1, in which the bracket 18 has an outer pipe 58 fixed to the fitting 43 at its upper end, and a lower hose fitted slidably into the outer pipe 58 at its lower end. It has an inner pipe 59 that pivotally supports the guide roller 16.
The inner pipe 59 is provided with insertion holes 6 at appropriate intervals in the longitudinal direction.
0, and the stop pin 61 is removably inserted into the insertion hole 60 from the lower hole of the outer pipe 58. By changing the insertion hole 60 of the stop pin 61, the length of the bracket 14 is changed, and as a result, the orientation of the spray hole 13 in the range between the upper hose guide roller 15 and the lower hose guide roller 16 is adjusted. be able to.

[Effect of idea]

In this way, according to this invention, the payout amount of the spray hose is adjusted according to the amount of expansion and contraction of the telescopic boom device, and the chemical is sprayed from the spray holes in the range from the base end of the spray hose to the upper hose guide roller. The spread width of the medicine can be adjusted by expanding and contracting the telescopic boom device.

The spraying holes in the range from the lower hose guide roller to the upper hose guide roller are oriented diagonally or horizontally to the vertical direction, rather than directly below the vertical direction, so the chemicals from the spraying holes in this range are directed toward the tip of the slide boom. To be able to reach over-the-road points and safely spray close to obstacles, and to increase the maximum spray width or to reduce the weight by making the telescopic boom device smaller and lighter for a given maximum spray width. I can do it.

The orientation of the spray holes in the area between the upper hose guide roller and the lower hose guide roller changes by changing the mounting position of the lower hose guide roller with respect to the upper hose guide roller, so the maximum spray width can be adjusted. can.

[Brief explanation of drawings]

Figures 1 and 2 are detailed side and front views of the tip of the telescopic boom device, Figure 3 is a modification of Figure 1, and Figure 4 is another modification of Figure 1. Figure 5 is a schematic plan view of the entire tractor, Figure 6 is a schematic diagram of the entire tractor as seen from the rear, Figure 7 is a side view of the boom section, Figure 8 is a plan view of the boom section, and Figure 9 is a schematic plan view of the entire tractor. The figure is a perspective view of the distal end of the spraying hose, and FIG. 10 is a side view of the boom section of the conventional device. In the figure, 1...tractor (traveling device),
2...Blower (transfer device), 3...Telescopic boom device, 4...Support boom, 5...Slide boom,
6...Dispersion hose, 13...Spreading hole, 15...Upper hose guide roller, 16...Lower hose guide roller, 18...Bracket, 24...Wire guide roller, 25...Tension wire, 33... Tension coil spring, 41...Guide groove, 44...Bolt, 52...Circular groove, 53...Bolt, 58...
...outer pipe, 59...inner pipe, 60...insertion hole, 61...stopping pin.

Claims (1)

[Claims for Utility Model Registration] (1) A traveling device 1, a transfer device 2 that transfers a drug from a drug tank mounted on this traveling device 1, a support boom 4, and a device that is slidable on this support boom 4. The telescopic boom device 3 has a slide boom 5 and is extendable to the side of the traveling device 1, and has a plurality of dispersion holes 13 connected to the discharge side of the transfer device 2 and arranged in a longitudinal direction. Device 3
a wire guide roller 24 rotatably supported on the proximal end of the slide boom 5; and a wire guide roller 24 rotatably supported on the proximal end of the slide boom 5. an upper hose guide roller 15 pivotally supported by a lower hose guide roller 16 rotatably supported by a bracket 18 extending downward from near the distal end of the slide boom 5; Hose guide roller 16 and upper hose guide roller 1
A tension coil spring 33 is connected on one side to the distal end of the spraying hose 6 extending through the support boom 5 , and a tension coil spring 33 is coupled on the other side to the distal end of the support boom 4 by folding back the wire guide roller 24 . A drug dispersing device characterized in that it has a tension wire 25 that is latched to the lower hose guide roller 16, and the attachment position of the lower hose guide roller 16 relative to the upper hose guide roller 15 can be changed. (2) A utility model registration request characterized in that the attachment position of the upper end of the bracket 18 to the tip side end of the slide boom 5 is adjustable so as to change in the longitudinal direction of the slide boom 5. The drug dispersing device according to scope 1. (3) The bracket 18 is attached to the slide boom 5.
The utility model according to claim 1, characterized in that the lower hose guide roller 16 is attached to the slide boom 5 at a variable angle relative to the upper hose guide roller 15, thereby making it possible to change the attachment position of the lower hose guide roller 16 with respect to the upper hose guide roller 15. Chemical spraying equipment. (4) The chemical dispersion according to claim 1 of the utility model registration claim, characterized in that the bracket 18 is extendable and retractable in the longitudinal direction so that the mounting position of the lower hose guide roller 16 with respect to the upper hose guide roller 15 can be changed. Device.