JP2531218Y2 - Spout bending device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for bending a jet head such as a T-shaped jet head, and more particularly to a device for bending a jet head capable of reducing a load on a flexible tube portion.

[0002]

2. Description of the Related Art Japanese Unexamined Utility Model Publication No. Sho 59-164887 discloses a hinge-type bellows which is disposed in the middle of a pipe and is bent in the horizontal direction to absorb the thermal expansion and contraction of the pipe. A hinge structure for connecting both ends of the bellows is provided, and the hinge structures located on the respective side surfaces each include a pair of hinge plates, and the pair of hinge plates are fixed to both ends of the bellows, respectively. , And extend to the extent that they overlap each other, at which point the mating hinge plates are provided by a combination of vertically extending pins and slots for receiving the pins.
Fig. 2 describes a hinged bellows that is bendable in the horizontal direction.

[0003]

[Problem to be solved by the present invention]
In the hinge-type bellows described in JP-B-87, although the bellows has a function of absorbing the thermal expansion and contraction of the pipe by bending in the horizontal direction by a hinge structure provided on both end faces in the horizontal direction, the bellows is provided between the pipes at both ends of the bellows. No drive is provided to change these intersection angles.
On the other hand, this invention makes it possible to change the angle of intersection between the proximal tube portion and the distal tube portion by providing a drive device between the portions.

[0004]

The present invention will be described with reference to the drawings corresponding to the embodiments. In the bending device of the spout of claim 1, the proximal tube portion (104) and the distal tube portion (108) are connected via the connecting member (114) juxtaposed to the flexible tube portion (106) connecting the both. It can be bent freely,
The connecting member (114) has one end fixed to the proximal tube portion (104) and the distal tube portion (108), and the other end connected to each other by a pivot (120).
6,118) and these arms (116,118)
The spouts are disposed along the outside of the flexible tube portion (106), and the pivots (120) of the connecting members (114) are located at positions diametrically opposed to the flexible tube portion (106). In the bending device of (1), a driving device (40, 84) is provided between the proximal tube portion (104) and the distal tube portion (108) so as to change the intersection angle thereof.

[0005] In the bending device of the jet head according to the second aspect, the pivot portion (120) has a substantially horizontal axis and the connecting member (114).
Comprises a stopper (122) that can be held between the arms (116, 118) and a torsion spring (124).

[0006]

According to the first aspect of the present invention, when the tip tube portion (108) is changed to a substantially vertical position during one-side spraying or turning to avoid collision, etc., a driving device, that is, a later-described spraying control lever (40) and The distal tube portion (108) is swung upward relative to the proximal tube portion (104) via the wire (84). As a result, the connecting member (11)
Rotation occurs in the pivot portion (120) of 4), and the tip tube portion (1) is rotated.
08) swings about the pivot (120) of the connecting member (114) relative to the proximal tube portion (104), and the flexible tube portion (106) bends. At this time, the weight of the tip tube portion (108) depends on the pivot portion (12) of the connecting member (114).
0) via the proximal tube portion (104).

In the invention of claim 2, the stopper (12)
2) the distal tube portion (108) is the proximal tube portion (104)
Is prevented from swinging downward, so that the distal tube portion (108) and the proximal tube portion (104) are in a horizontal straight line. At this time, the weight of the distal tube portion (108) is supported by the proximal tube portion (104) via the stopper (122) of the connecting member (114).

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 9 is a side view of the riding type rice transplanter 10. The rice transplanter cart 12 includes a driver's seat 14 on which a driver rides to operate the riding type rice transplanter 10, and a front wheel 16 and a rear wheel 18.
It is possible to drive by driving. The PTO shaft 20
The rice transplanter truck 12 extends in the front-rear direction, rotates in synchronization with the rotation of the front wheel 16 and the rear wheel 18, and the rear end of the PTO shaft 20 reaches the rear portion of the rice transplanter truck 12. Hydraulic link 22
Are arranged at the upper center and left and right sides, and have a front end connected to a rear part of the rice transplanter truck 12. The planting device 24 is detachably attached to the rear end of the hydraulic link 22, and supplies rotational power synchronized with rotation of the front wheel 16 and the rear wheel 18 to the PTO shaft 20.
The rice seedlings are planted at regular intervals.

FIG. 10 is a side view showing a state where the planting device 24 shown in FIG. 9 is removed.

FIG. 8 is a side view of the rice transplanter truck 12 shown in FIG. The spraying device 26 will be described. The frame 28 is detachably mounted on the rear end of the hydraulic link 22. The frame 28 includes a blower 32 driven by an engine 30, a spraying agent tank 34 and a metering device 36. Is mounted, and a T-shaped jet head 38 is attached to the rear part. Spray agent tank 2
8 and a metering device 36 are provided one each on the left and right sides for left-side spraying and right-side spraying, and two spraying control levers 40 are provided for the combination of the spraying agent tank 34 and the metering device 36. It is arranged corresponding to the attachment, and is located at the front of the spraying device 26 so that operation from the driver's seat 14 becomes possible.
The throttle lever 42 is also provided close to the driver's seat 14 so as to enable operation from the driver's seat 14, and controls the output of the engine 30.

FIG. 4 shows a metering device 36 in the spraying device 26.
FIG. 5 is a view taken in the direction of the arrow V in FIG. The counter shaft 44 is connected to the PTO shaft 20 and the eccentric cam 4
6 is driven. The double arm lever 48 is connected to the peripheral portion of the eccentric cam 46 via the arm 52 at the lower end, and reciprocates around the fulcrum 50 as the eccentric cam 46 rotates.
The bar 54 is rotatably connected to the upper end of the double arm lever 48 and the base end of the T-shaped link 56 at both ends, and reciprocates right and left to swing the T-shaped link 56 back and forth around the fulcrum 58. Move. One end of a pair of wires 60 and one end of a pair of wires 62 are respectively locked to both ends of the T-shaped link 56, and the other ends of the wires 60 and 62 are commonly locked to each metering device 36. I have. A duct 66 extends from the lower part of each metering device 36, and the lower end of each duct 66 is connected to inlets 102 on both sides of a T-shaped pipe portion 64 at the center of the T-shaped jet head 38.

FIG. 6 is a detailed view of the metering device 36. The configuration of the left and right metering devices 36 is the same,
6 will be described. The perforated plate 72 has a plurality of circular holes 70 at equal angular intervals in a peripheral portion, and is rotatably disposed in the cylindrical wall 68. The shutter 74 has one circular hole 7.
0 has a through hole 76 on one side,
2 is placed on the perforated plate 72 so as to be swingable about the center line 2 and opens and closes an outlet 90 (FIG. 7) at the lower part of the spraying agent tank 34. The shutter arm 78 extends across the upper edge of the cylindrical wall 68 and swings integrally with the shutter 74. The spray control lever 40 is swingable around a fulcrum 80 at the lower end. The wires 82 and 84 are locked at one end to the spray control lever 40 and at the other end to the outer end and the tip tube portion 108 of the shutter arm 78, respectively.
3 and is displaced with the swinging of the spray control lever 40. The torsion spring 86 has an intermediate portion wound around the rotation shaft portion of the perforated plate 72, and is locked at both ends by the edge of the cylindrical wall 68 and the shutter arm 78, respectively, to attach the shutter 74 toward the closed position. Energize. When the spray control lever 40 is in the upright position, the shutter 74 is in a rotating position to close the outlet 90 (FIG. 7) at the lower part of the spray agent tank 34 by the biasing force of the torsion spring 86.
When the spray control lever 40 is in the tilted position, the wire 82 is pulled toward the spray control lever 40 to rotate the shutter 74 via the shutter arm 78 against the urging force of the torsion spring 86, As a result, the through hole 76 of the shutter 74 coincides with the outlet 90 at the lower part of the spraying agent tank 34.

FIG. 7 shows a spraying agent tank 34 and a metering device 36.
FIG. The spray 88 is stored in the spray tank 34.
And is discharged from the spraying agent tank 34 through an outlet 90 at a lower portion of the spraying agent tank 34.
The axis 92 has its center line aligned with the center line of the perforated plate 72,
The lever 94 is fixed to the lower end of the shaft 92 and rotates integrally with the shaft 92. The lever 94 has the wire 6 described above.
0 and 62 (FIG. 4) are locked from opposite sides, and with the reciprocating swing of the T-link 56 (FIG. 4), the shaft 92 alternately rotates by a predetermined amount in the rotation direction. The one-way clutch 96 is interposed between the shaft 92 and the hole 72, and transmits only one-way rotation of the shaft 92 to the hole 72. Thus, the perforated plate 72 rotates by a predetermined amount in one direction with the alternate rotation of the shaft 92 in both rotation directions. The outlet 98 is a shaft 92
Is located on the side opposite to the outlet 90 with respect to the shutter 74.
The spraying agent 88 introduced into the circular hole 70 of the perforated plate 72 through the through hole 76 is carried toward the discharge port 98 as the perforated plate 72 rotates, and is discharged from the discharge port 98 to the duct 66 (see FIG. 4) Drop.

FIG. 3 is a view of one half of the T-shaped jet head 38 viewed from the rear in the horizontal direction. The T-shaped jet head 38 has a left-right symmetric configuration. The T-shaped tube portion 64 is located at the center of the T-shaped jet head 38, and the wind from the blower 32 (FIG. 8) is introduced,
Distribute this wind left and right. The introduction port 102 is provided on a side wall of the T-shaped tube portion 64 on the branch side, and is provided with a duct 66 (FIG. 4).
Is connected at the lower end. A proximal tube portion 104, a flexible tube portion 106, and a distal tube portion 108 are continuously connected to the branch side of the T-tube portion 64. Multiple nozzles 110
Are provided at equal intervals below the proximal tube portion 104 and the distal tube portion 108, and eject the spraying agent 88 (FIG. 7). Chain 1
12 is the distal end of the distal tube portion 108 and the distal tube portion 108
The distal end portion of the distal end tube portion 108 is supported by the proximal end portion of the distal end stem portion 108 by being stretched between the distal end portion of the stay 113 fixed and standing at the proximal end side of the distal end portion. The wire 84 has its end stopped at the base of the tip-sensitive portion 108.

FIGS. 1 and 2 are a detailed front view and a plan view of the area including the flexible tube portion 106. FIG. Connection fitting 114
Are disposed on the front side and the rear side of the flexible tube portion 106. In the connection fitting 114, the arms 116, 118
Are fixed to the proximal tube portion 104 and the distal tube portion 108, respectively, project in the axial direction of the proximal tube portion 104 and the distal tube portion 108 toward the flexible tube portion 106, and at the protruding ends by the connecting shaft 120. They are rotatably connected to each other. The stopper 122 is moved from the arm 118 to the arm 116.
Is fixed to the arm 118 so as to protrude toward the arm 116 and abuts against the lower surface of the protruding end of the arm 116 to prevent the arm 118 from bending downward from a linear position with respect to the arm 116. . The torsion spring 124 is wound around the connecting shaft 120 at an intermediate portion, and the arms 116 and
The arm 118 is urged in a direction in which the arm 118 expands with respect to the arm 116.

The operation of the proximal tube portion 104 will be described together with the spraying operation by the spraying device 26. In the case of two-sided spraying,
The left and right spray control levers 40 are both held in the upright position. As a result, the wires 82 and 84 are displaced in the directions pushed out from the spray control lever 40, respectively.
4, the outlet 90 is opened, and the proximal tube portion 104 and the distal tube portion 108 are located on a straight line in the horizontal direction. On the other hand, the spraying agent 88 in the spraying agent tank 34
6 to the circular hole 70 of the eye plate 72,
Discharged from 0.

In the case of one-sided spraying, the spraying control lever 40 for stopping the spraying is set to the tilting position. Since the wires 82 and 84 in which the spray control lever 40 is in the tilted position are pulled toward the spray control lever 40, the shutter 74 closes the outlet 90 of the spray agent tank 34, and the tip tube portion 108 connects the connection fitting 114. Rotation about axis 120 results in a substantially vertical position. The flexible tube portion 106 bends according to the bending angle between the proximal tube portion 104 and the distal tube portion 108. When the distal tube portion 108 is bent with respect to the proximal tube portion 104, the weight of the distal tube portion 108 is adjusted via the arm 118, the stopper 122, and the arm 116.
To prevent the force due to the weight of the distal tube portion 108 from being applied to the flexible tube portion 106. Spray 88
Is performed only from the half of the T-shaped jet head 38 where the spray control lever 80 is in the upright position and the tip tube portion 108 is in the horizontal position.

When the tip tube section 108 is changed from the vertical position to the horizontal position, the spray control lever 40 is switched from the tilt position to the upright position. The wire 84 is connected to the spray control lever 40.
To allow the tip tube portion 108 to swing downward. The torsion spring 124 is connected to the arm 11
By biasing the arm 8 in the expanding direction with respect to the arm 116, the downward swing of the distal end tube portion 108 is promoted.

Although the embodiment has described the T-shaped jet head 38, the present invention can be applied to other jet heads such as a linear jet head other than the T-shaped jet head 38.

[0020]

According to the first aspect of the present invention, the connecting member interconnects the proximal tube portion and the distal tube portion and has a pivot portion, and the distal tube portion with respect to the proximal tube portion is rotated by the pivot portion. While bending is ensured, the weight of the distal tube portion is not applied to the flexible tube portion at the time of bending, but is applied to the proximal tube portion via the connecting member including the pivot portion. Therefore, the mechanical load on the flexible tube at the time of bending can be reduced, the durability of the flexible tube can be improved, and the strength of the flexible tube can be reduced. By means of a drive device consisting of a sprinkling control lever and a wire between the tube section and the distal tube section, the angle of intersection of these proximal and distal tube sections can be freely changed.

According to the second aspect of the present invention, the stopper of the connecting member prevents the distal end tube portion from swinging downward with respect to the proximal end tube portion and holds the both at a horizontal linear position. The force due to the weight of the distal tube portion when in the horizontal linear position is not applied to the flexible trunk portion, but is received by the proximal tube portion via the stopper, whereby the flexible trunk portion Can be improved in durability and strength can be reduced.

[Brief description of the drawings]

FIG. 1 is a detailed front view of a range including a flexible tube portion.

FIG. 2 is a detailed plan view of a range including a flexible tube portion.

FIG. 3 is a view of one half of a T-shaped jet head viewed from the rear in the horizontal direction.

[Head 4] It is a system diagram of a driving device of a metering device in a spraying device.

FIG. 5 is a view taken in the direction of the arrow V in FIG. 4;

FIG. 6 is a detailed view of a metering device.

FIG. 7 is a vertical sectional view of a spraying agent tank and a metering device.

8 is a side view of the rice transplanter cart of FIG. 10 in a state where a spraying device is mounted.

FIG. 9 is a side view of the riding type rice transplanter.

FIG. 10 is a side view showing a state where the planting device of FIG. 9 is removed.

[Explanation of symbols]

 38 T-shaped jetting head (spouting head) 40 Spray control lever (drive device) 84 Wire (drive device) 104 Base end tube portion 106 Flexible tube portion 108 Tip tube portion 114 Connection fitting (connection member) 120 Connection shaft (pivot portion) 122 Stopper

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location B05B 7/14 B05B 7/14 (56) References Japanese Utility Model 1984-564887 (JP, U) 48-97718 (JP, U) Full opening 62-38415 (JP, U) Full opening 53-14216 (JP, U) Full opening 60-5473 (JP, U)

Claims (2)

(57) [Scope of request for utility model registration] A proximal tube portion (104) and a distal tube portion (1).
08) and is freely bent via a connecting member (114) which is arranged in the flexible tube portion (106) connecting the two, said connecting member (114) is distal to the proximal tube portion (104) A pair of arms (116, 118) fixed at one end to the tube portion (108) and connected at the other end to each other by a pivot (120).
A pair (18) is provided along the outside of the flexible tube portion (106) and a pivot portion (120) of each connecting member (114).
In folding apparatus噴頭in the diametrically opposite positions relative to the front Symbol flexible tube portion (106), said proximal tube portion
These are located between (104) and tip tube section (108).
A bending device for a jet head, comprising a driving device (40, 84) capable of changing an intersection angle . 2. The pivot (120) has a substantially horizontal axis, and the connecting member (114) is connected to the arm (116,
118. A torsion spring (124) interposed between the base tube portion (104) and the torsion spring (124) for holding the proximal tube portion (104) and the distal tube portion (106) in a straight line. The bending device of the spout described.