JPH0441959Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a spraying device used as a wide spreader for dispersing powdered spraying agents in fields, and in particular, the flexibility of the spraying device is This invention relates to a guide device that is provided at the retracting and extending portions of the tip of the spraying hose and guiding the spraying hose.

[Prior Art] In powder and granule spraying equipment in which a spraying hose having spray holes at appropriate intervals in the longitudinal direction is suspended along a telescoping boom device, the spraying hose may sag and touch the ground as the telescoping boom device is contracted. When the traveling device is moved, troubles such as getting entangled with objects to be spread or stakes may occur.

Therefore, in Utility Application No. 61-104845, the applicant proposed a system in which the spraying hose was retracted from above the slide boom through a guide device at the tip of the slide boom, or let out from above, following the expansion and contraction of the telescoping boom device. In addition, a guide device for a spray hose is disclosed that can prevent the deflection of the spray hose in the axial direction of the guide device and the occurrence of "wrinkles" in the spray hose when the spray hose is retracted through the guide device. did. However, the guide device of the embodiment according to that application is intended for a spray hose of a specific diameter, that is, the guide width for guiding the spray hose is fixed.

[Problem to be solved by the invention] In the case of a straight spray hose, the width of the spray hose changes as the spray hose used in the spray device changes depending on the situation, or
In the case of a tapered spray hose, the width is different at the tip and the base end, and therefore the width of the guide device must also be changed. It is difficult to adjust the width of the guide device for changes in width.

The purpose of this invention is to provide a guide device for a spraying device that can prevent the spreader hose from being deflected or wrinkled, and can adjust the width arbitrarily depending on the width of the sprayer hose.

[Means for solving the problem] According to the guide device for the spraying device according to this invention,
A flexible member whose central portion is freely expandable and contractable is integrally formed at the end of a C-shaped frame that can be expanded and contracted, and tapered members that taper toward the tip on both side edges of this flexible member. The rotor is formed into a rotor, and the side edges of the rotor are rotatably sandwiched via a spherical buffer member.

[Operation] When the spraying hose passes through the guide device, relative rotation occurs between the spherical buffer member and the tapered rotor, allowing the spraying hose to pass smoothly. Further, the spraying hose contacts the flexible member and the tapered member at its widthwise central portion and both ends, respectively, and bends according to the side edge contour of the rotor.

The width of the guide device is adjusted in accordance with the width of the spray hose by expanding and contracting the central portion of the C-shaped frame and the rotor.

[Example] Hereinafter, an example of this invention will be described based on the accompanying drawings.

4 and 5 schematically show the entire wide spreader for powder and granule spreading, in which a tractor 1 as a traveling device is equipped with a spreading agent tank and a blower 2 as a transfer device at the rear. There is. A telescopic boom device 3 extending in the horizontal direction has a support boom 4 coupled at its base end so as to be rotatable around a vertical axis;
It has a slide boom 5 that is slidably supported by the support boom 4, and is extendable and retractable in the horizontal direction. 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 spray agent tank is transferred to the spray hose 6 by the blower 2. Telescopic boom device 3
When dispersing powder and granules, it extends in the lateral direction of the tractor 1, as shown by the solid line in FIGS. is reduced and closed to a position extending along the .

FIGS. 6 and 7 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 booms 3 to each other. Expand and contract. The spraying hose 6 is
A collision plate 1 that directs the powder and granules transferred through the spraying hole 13 and the spraying hose 6 toward the spraying hole 13.
9 are arranged in a row at appropriate intervals in the lower longitudinal direction, and are passed through hose guides 14 fixedly installed at appropriate intervals in the lower part of the support boom 4 in the longitudinal direction. The upper guide device 15 is rotatably supported at the tip of the slide boom 5 around a horizontal axis, and the lower guide device 1
6 is rotatably supported around a horizontal axis at the lower end of a bracket 18 which is suspended near the upper guide device 15 at its upper end.

As shown in FIG. 8, the tip of the spraying hose 6 is made into a flat plate and has multiple rows of heat seals 17 extending laterally, and the tip forms the base of an isosceles triangular connecting ring 21. By folding back along the axis to form a plurality of rows of heat seals 17, it is possible to equalize the tension in the length direction of the spray hose over the entire width.

Returning to FIGS. 6 and 7, 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 connected to the connecting ring 2 at each end.
1 and a hook 27. 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 connected to the stopper guide 34.
will be passed through.

In FIGS. 6 and 7, 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 where the spray hose 6 is not heat-sealed 17. the tip reaches the lower guide device 16,
The flat plate-shaped portion heat-sealed 17 is folded back via the lower and upper guide devices 16 and 15, and its tip reaches the upper surface of the tip of the slide boom 5.

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 devices 15 and 16 to the bottom of the telescopic boom device. The length of the spray hose 6 in the direction of 3 is extended 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 slide boom 5 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 guide devices 15 and 16, and the length of the spraying hose 6 below the telescopic boom device 3 corresponds to the length of the telescopic boom device 3. Remains reduced.

When moving the tractor 1, the telescopic boom device 3
is contracted to the closed position, and the deflection of the spray hose 6 that occurs at this time is removed by the tension of the tension coil spring 33. The stopper guide 34 prevents the tension wire 25 from coming off the wire guide roller 24 due to vibration or the like.

The upper and lower guide devices 15 and 16 have the same structure and shape, and the structure and shape of the upper guide device 15 will be explained in detail in FIG. The upper guide device 15 has a substantially symmetrical structure. The turnbuckle 48 is formed into a shaft shape, and has male threaded portions 50 having different thread directions on both sides with respect to the axial center.
a, 50b. In this embodiment, the male threaded portions 50a and 50b have a right-handed thread and a left-handed thread, respectively. Guide roller 52 as a rotor
a, 52b are formed in a tapered shape so that the outer diameter gradually decreases from the end on the turnbuckle 48 side to the end on the anti-turnbuckle 48 side, that is, toward the axially outer tip of the turnbuckle 48. Female threaded portion 54 at the base of the side
a, 54b as inner holes, and inner holes 55a, 55b at the end on the side opposite to the turnbuckle 48. The female threads 54a and 54b are right-handed and left-handed, respectively, and are screwed into the male threads 50a and 50b of the turnbuckle 48, respectively. The fixing nuts 56a and 56b are formed as right-handed threads and left-handed threads, respectively, and are connected to the guide roller 5.
Turnbuckle 48 on the inside of 2a, 52b
The guide rollers 52a, 5 on the outer periphery of the turnbuckle 48 are screwed into the male threaded portions 50a, 50b of
Fix the position of 2b. A rose 58 forming the center of the rotor is made of a flexible material and is attached to a fixing nut 56.
a, 56b so as to surround the outer periphery of the axially central portion of the turnbuckle 48, and expands and contracts according to the distance between the fixing nuts 56a, 56b;
It is held in contact with fixing nuts 56a and 56b at both ends. C-shaped frame bodies 60a, 60b
is made of a pipe, and has guide rollers 52a, 5 along with buffer balls 62a, 62b at one end.
It is fitted into the inner holes 55a and 55b of 2b. The guide rollers 52a, 52b are provided with buffer balls 62a, 6.
The buffer balls 62a, 62b are sandwiched inward in the axial direction of the turnbuckle 48 by one end of the C-shaped frame bodies 60a, 60b via the guide roller 5.
2a, 52b are rotatably supported in the circumferential direction at one end of C-shaped frames 60a, 60b. A rod 64 is fixed to the other end of the C-shaped frame 60b so as to be in line with that end.
is removably fitted into the other end of the C-shaped frame 60a at the end on the 60a side of the C-shaped frame. The fixing bolt 66 is screwed into the other end of the C-shaped frame 60a in the radial direction of the C-shaped frame 60a.
This prevents relative movement between a and the rod 64. The C-shaped frames 60a, 60 are supported at a predetermined portion of the tip of the slide boom 5.

It is necessary to adjust the axial length of the upper guide device 15 depending on the width of the spray hose 6 used.
To explain how to adjust the axial length of the side guide device 15, fixing nuts 56a, 56b
and loosen the fixing bolt 66. As a result, the guide rollers 52a and 52b become rotatable relative to the turnbuckle 48, and the rod 64
can be moved relative to the C-shaped frame 60a. Next, move the guide roller 52a, 52 until the distance between the outer ends of the guide rollers 52a, 52 reaches the desired length.
a, 52b and change the relative relationship between the C-shaped frame 60a and the rod 64. Finally, tighten the fixing nuts 56a, 56b and the fixing bolt 66,
Guide roller 52 on turnbuckle 48
a, 52b, C-shaped frame 60a and rod 64
Fix the relative position with. The bellows 58 expands and contracts depending on the distance between the fixing nuts 56a and 56b, and can prevent gaps from forming between both ends of the bellows 58 and the fixing nuts 56a and 56b. FIGS. 2 and 3 show the upper guide device 15 in its extended and contracted widths, respectively.

When the spraying hose 6 slides on the guide rollers 52a, 52b and the upper surface of the bellows 58, the inner hole 55
The guide rollers 52a, 52b and the bellows 58 rotate with respect to the C-shaped frames 60a, 60b due to the relative rotation between the buffer balls 62a, 62b and the buffer balls 62a, 62b. Further, the spraying hose 6 contacts the bellows 58 at its widthwise central portion, and
Guide rollers 52a, 52b at both ends
Since it is bent according to the tapered side edge contour, deviation in the width direction and generation of "wrinkles" are prevented.

[Effects of the invention] As described above, according to this invention, the spray hose has the following effects:
As it passes through the guide device, it contacts tapered rotors at both ends and is bent, thereby preventing widthwise deflection and the formation of "wrinkles". In addition, the C-shaped frame body, the flexible part in the center, and the rotor expand and contract depending on the width of the spray hose used.
The guide device can be adjusted to the appropriate width.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, with FIG. 1 being a detailed view of the upper device, FIGS. 2 and 3 being views showing the state of the guide device when the rotor width is extended and contracted, respectively. Fig. 4 is a schematic plan view of the spraying agent dispersing device, Fig. 5 is an elevational view of the entire dispersing agent dispersing device seen from the rear, Fig. 6 is a side view of the boom section, and Fig. 7 is a plan view of the boom section. , FIG. 8 is a perspective view of the distal end of the spray hose. 15... Upper guide device, 52a, 52b... Guide roller (tapered member), 58... Bellows (flexible member), 60a, 60b... C-shaped frame body,
62a, 62b...Buffer balls (spherical buffer members).

Claims (1)

[Scope of utility model registration request] A flexible member 58 whose central part is expandable and retractable is provided at the end of the C-shaped frame that can be expanded and contracted, and tapered members 5 that taper toward the tip are provided on both side edges of the flexible member 58.
2a, 52b are integrally formed to form a rotor, and the side edges of this rotor are connected to spherical buffer members 62a, 6.
A guide device for a dispersing device, characterized in that it is rotatably clamped via 2b.