JPH0521615U - Spout bending device - Google Patents

Abstract

(57) [Abstract] [Purpose] In the T-shaped jet nozzle 38 in which the proximal pipe portion 104, the flexible pipe portion 106 and the distal pipe portion 108 are continuously connected,
By bending the flexible tube section 106, the distal tube section 108 is moved to the proximal tube section.
When the tube 104 is bent upward, the weight of the tip tube portion 108 is prevented from being applied to the flexible tube portion 106, and the durability and the strength of the flexible tube portion 106 are improved. [Structure] A connecting fitting 114 is provided in parallel with the flexible tube portion 106. In the connecting fitting 114, the arms 116 and 118 have their base end portions fixed to the base end pipe portion 104 and the front end pipe portion 108, respectively, and the front end portions are rotatably connected by a connecting shaft 120.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bending device for a nozzle head such as a T-shaped nozzle head, and more particularly to a bending device for a nozzle head capable of reducing the load on the flexible tube portion.

[0002]

[Prior Art]

 Japanese Utility Model Publication No. 59-20010 discloses a spraying device equipped with a T-shaped spray head capable of spraying on one side as well as spraying on both sides. In this spraying device, a flexible pipe portion is provided in each half of the T-shaped jet, and a suspending tool such as a rope extends diagonally downward from the spraying device body to the tip of the tip pipe portion to operate the suspending device. Thus, while bending the flexible tube portion, the tip tube portion is swung upward so that it can be stored in a substantially vertical position.

[0003]

[Problems to be solved by the device]

 In the bending device disclosed in Japanese Utility Model Publication No. 59-20010, when the distal tube portion is bent with respect to the proximal tube portion, the weight of the distal tube portion is applied downward to the flexible tube portion. Also, when the proximal tube portion, the flexible tube portion and the distal tube portion extend horizontally in a straight line, a part of the weight of the distal tube portion may be applied to the main body of the spraying device by the slanting extension tool. However, the remaining part is adapted to hang on the flexible tube part. Such a load on the flexible tube portion due to the weight of the tip tube portion causes deterioration of the durability of the flexible tube portion, and also requires the strength of the flexible tube portion to be increased.

An object of the invention of claim 1 is to provide a bending device for a jet nozzle in which the burden on the flexible tube portion caused at the time of bending due to the weight of the tip tube portion is reduced. It is an object of the invention of claim 2 to provide a bending device for a jet nozzle in which the load on the flexible tube portion during horizontal operation due to the weight of the tip tube portion is reduced.

[0005]

[Means for Solving the Problems]

 The invention will be described using the reference numerals of the drawings corresponding to the embodiments. In the bending device of the jet nozzle (38) of the first aspect, the proximal pipe portion (104), the flexible pipe portion (106) and the distal pipe portion (108) are connected in series. The connecting member (114) includes a pivotal support (120) that allows the distal tube section (108) to pivot relative to the proximal tube section (104) about a generally horizontal axis, and the proximal tube section (104). ) And the tip tube portion (108) are interconnected.

In the bending device of the jet nozzle (38) according to claim 2, the connecting member (114) prevents the distal end pipe portion (108) from swinging downward with respect to the proximal end pipe portion (104). It has a stopper (122).

[0007]

[Action]

 In the invention of claim 1, when the tip end pipe portion (108) is changed from the substantially horizontal position to the substantially vertical position at the time of one-side spraying or at the time of turning to avoid a collision, the tip end pipe portion (108) is made to be the base end. A force is applied to the tip tube portion (108) so as to swing upward with respect to the tube portion (104). As a result, the pivot portion (120) of the connecting member (114) is rotated, and the distal tube portion (108) moves around the pivot portion (120) of the connecting member (114) with respect to the proximal pipe portion (104). And the flexible tube portion (106) bends. At this time, the weight of the distal end pipe portion (108) is supported by the proximal end pipe portion (104) via the pivotal support portion (120) of the connecting member (114).

In the invention of claim 2, the stopper (122) prevents the distal end tube portion (108) from swinging downward with respect to the proximal end tube portion (104), and the distal end tube portion (108). ) And the proximal tube portion (104) are on a horizontal straight line. At this time, the weight of the distal pipe portion (108) is supported by the proximal pipe portion (104) via the stopper (122) of the connecting member (114).

[0009]

【Example】

 The present invention will be described below with reference to the embodiments shown in the drawings. FIG. 9 is a side view of the riding-type rice transplanter 10. The rice transplanter truck 12 includes a driver's seat 14 in which a driver gets in and operates the riding-type rice transplanter 10, and is self-propelled by driving front wheels 16 and rear wheels 18. The PTO shaft 20 extends in the front-rear direction of the rice transplanter truck 12 and rotates in synchronization with the rotation of the front wheels 16 and the rear wheels 18, and the rear end of the PTO shaft 20 reaches the rear portion of the rice transplanter truck 12. . The hydraulic links 22 are arranged at the center of the upper part and on the left and right sides, and the front end part is coupled to the 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 receives rotary power synchronized with the rotation of the front wheels 16 and the rear wheels 18 via the PTO shaft 20 to keep rice seedlings at regular intervals. Plant in.

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

FIG. 8 is a side view of the rice transplanter truck 12 of FIG. 10 with the spraying device 26 attached. Explaining the spray device 26, a frame 28 is detachably attached to the rear end of the hydraulic link 22, and a blower 32 driven by an engine 30, a spray agent tank 34, and a metering device are attached to the frame 28. 36 assembly bodies and the like are placed, and a T-shaped spout 38 is attached to the rear part. The assembly of the spray agent tank 34 and the metering device 36 is arranged one each on the left and the right for the left spraying and the right spraying, and two spray control levers 40 are provided for the spraying agent tank 34 and the metering device 36. It is arranged corresponding to the assembly body of and, and is located in the front part of the spraying device 26 so that the driver's seat 14 can be operated. The throttle lever 42 is also provided close to the driver's seat 14 so that the driver's seat 14 can be operated, and controls the output of the engine 30.

FIG. 4 is a system diagram of a drive mechanism of the metering device 36 in the spraying device 26, and FIG. 5 is a view taken in the direction of arrow V in FIG. The counter shaft 44 is connected to the PTO shaft 20 and drives the eccentric cam 46. The double-armed lever 48 is connected to the peripheral portion of the eccentric cam 46 via the arm 52 at the lower end, and reciprocally swings 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 left and right to move the T-shaped link 56 around the fulcrum 58. Swing back and forth. One ends of a pair of wires 60 and 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. A duct 66 extends from the lower portion of each metering device 36, and the lower end of each duct 66 is connected to the inlets 102 on both sides of the T-tube portion 64 at the center of the T-shaped nozzle 38.

FIG. 6 is a detailed view of the metering device 36. The configurations of the left and right metering devices 36 are the same, and the configuration of one metering device 36 will be described. The perforated plate 72 has a plurality of circular holes 70 at equal angular intervals in its peripheral portion, and is rotatably arranged in the cylindrical wall 68. The shutter 74 has a through hole 76 which is fitted to one circular hole 70 in one part, and is placed on the eye plate 72 so as to be swingable around the center line of the eye plate 72, and the spray agent tank. Open and close the outlet 90 (Fig. 7) at the bottom of 34. The shutter arm 78 extends over 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 to the spraying control lever 40 at one end side, and are locked to the outer end of the shutter arm 78 and the proximal end side of the tip tube portion 108 (FIG. 3) at the other end side, respectively. The control lever 40 is displaced as it rocks. The torsion spring 86 has an intermediate portion wound around the rotary shaft portion of the perforated plate 72, and is locked at both ends by the edge portion of the cylindrical wall 68 and the shutter arm 78, and the shutter 74 is attached to the closed position. Energize. When the spray control lever 40 is in the upright position, the shutter 74 is in the rotational position where the biasing force of the torsion spring 86 closes the lower outlet 90 (FIG. 7) of the spray agent tank 34, and the spray control lever 40 When 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 biasing force of the torsion spring 86, resulting in The through hole 76 of the shutter 74 is aligned with the outlet 90 at the bottom of the spray agent tank 34.

FIG. 7 is a vertical sectional view of the spray agent tank 34 and the metering device 36. The spraying agent 88 is stored in the spraying agent tank 34, and is drawn out from the spraying agent tank 34 through an outlet 90 at the bottom of the spraying agent tank 34. The shaft 92 has its center line aligned with the center line of the plate 72, and the lever 94 is fixed to the lower end of the shaft 92 and rotates integrally with the shaft 92. The above-mentioned wires 60 and 62 (Fig. 4) are locked to the lever 94 from opposite sides, and the shaft 92 rotates in both directions as the T-shaped link 56 (Fig. 4) reciprocally swings. Alternates by a predetermined amount in the direction. The one-way clutch 96 is interposed between the shaft 92 and the plate 72, and transmits only the rotation of the shaft 92 in one direction to the plate 72. As a result, the plate 72 rotates by a predetermined amount in one direction as the shaft 92 alternately rotates in both rotation directions. The discharge port 98 is located on the side opposite to the outlet port 90 with respect to the shaft 92, and the spraying agent 88 introduced into the circular hole 70 of the eye plate 72 through the through hole 76 of the shutter 74 is the same as that of the eye plate 72. As it rotates, it is carried toward the discharge port 98 and drops from the discharge port 98 to the duct 66 (FIG. 4).

FIG. 3 is a view of one half of the T-shaped injection nozzle 38 as viewed from the rear in the horizontal direction. The T-shaped jet 38 has a symmetrical structure. The T-shaped tube portion 64 is located at the center of the T-shaped jet 38, and the wind from the blower 32 (FIG. 8) is introduced to distribute the wind to the left and right. The inlet 102 is provided on the side wall of the T-shaped tube portion 64 on the branch side, and is connected to the lower end of the duct 66 (FIG. 4). A proximal pipe portion 104, a flexible pipe portion 106 and a distal pipe portion 108 are continuously connected to the side portion of the T-shaped pipe portion 64 on the branch side. The plurality of injection holes 110 are provided below the proximal end tube portion 104 and the distal end tube portion 108 at equal intervals and eject the spraying agent 88 (FIG. 7). The chain 112 is stretched between the distal end portion of the distal tube portion 108 and the distal end portion of the stay 113 that is fixed and erected on the proximal end side of the distal tube portion 108, and the weight of the distal end portion of the distal tube portion 108 is increased. Is supported at the proximal end of the tip tube portion 108. The wire 84 is fastened at its end to the base of the distal tube portion 108.

1 and 2 are detailed front and plan views of the area including the flexible tube portion 106. The connection fittings 114 are arranged on the front surface side and the rear surface side of the flexible tube portion 106. In the coupling fitting 114, the arms 116 and 118 are fixed to the proximal pipe portion 104 and the distal pipe portion 108, respectively, and project in the axial direction of the proximal pipe portion 104 and the distal pipe portion 108 toward the flexible pipe portion 106. The protruding ends are rotatably connected to each other by a connecting shaft 120. The stopper 122 is fixed to the arm 118 so as to project from the arm 118 toward the arm 116, contacts the lower surface of the projecting end of the arm 116, and moves the arm 118 from a position on a straight line with respect to the arm 116. Prevent it from bending down. The torsion spring 124 is wound around the connecting shaft 120 at an intermediate portion and is locked by the arms 116 and 118 at both ends, and urges the arm 118 in a direction to expand the arm 116.

The operation of the proximal pipe portion 104 will be described together with the spraying work by the spraying device 26. When spraying on both sides, the left and right spray control levers 40 are both held in the standing position. As a result, the wires 82 and 84 are displaced to the direction pushed out from the spraying control lever 40, so that the shutters 74 in the left and right metering devices 36 open the outlet port 90 of the spraying agent tank 34, and the proximal end tube is opened. The portion 104 and the tip tube portion 108 are located on a straight line in the horizontal direction. In the connecting fitting 114, the stopper 122 receives the lower surface of the protruding end portion of the arm 116 and holds the arms 116 and 118 in a straight line, whereby the weight of the tip tube portion 108 is reduced by the arm 118, the stopper 122, and the arm 116. And is supported by the proximal tube portion 104 via. On the other hand, the spraying agent 88 in the spraying agent tank 34 is led out to the circular hole 70 of the perforated plate 72 through the through hole 76 of the shutter 74, and is ejected from the outlet 98 through the duct 66 to the T-shaped spout from the inlet 102. It is introduced into each half of 38 and is discharged from the nozzle 110.

In the case of one-sided spraying, the spraying control lever 40 for stopping spraying is set to the tilted position. Since the wires 82, 84 in which the spraying control lever 40 is in the tilted position are pulled toward the spraying control lever 40, the shutter 74 closes the outlet 90 of the spraying agent tank 34, and the tip tube portion 108 connects the connecting fitting 114. Rotate about axis 120 to a near vertical position. The flexible tube portion 106 bends according to the bending angle formed by the proximal tube portion 104 and the distal tube portion 108. The weight of the distal pipe portion 108 when the distal pipe portion 108 is bent with respect to the proximal pipe portion 104 is supported by the proximal pipe portion 104 through the arm 118, the stopper 122 and the arm 116, and the distal pipe portion 108 is supported. Forces due to the weight of 108 are prevented from being exerted on flexible tube section 106. The spraying agent 88 is sprayed only from the half of the T-shaped jet 38 which has the spraying control lever 40 in the upright position and the tip tube portion 108 in the horizontal position.

When changing the tip tube portion 108 from the vertical position to the horizontal position, the spraying control lever 40 is switched from the tilting position to the standing position. The wire 84 is displaced in the direction pushed out from the spraying control lever 40, and allows the tip tube portion 108 to swing downward. The torsion spring 124 urges the arm 118 toward the arm 116 in the expanding direction to promote downward swinging of the tip tube portion 108.

Although the present invention has been described with respect to the T-shaped nozzle 38 in the embodiment, the present invention can be applied to other nozzles such as a linear nozzle other than the T-shaped nozzle 38.

[0021]

[Effect of the device]

 According to the first aspect of the present invention, the connecting member interconnects the proximal end pipe portion and the distal end pipe portion with each other, and includes a pivotal support portion, and the pivoting of the pivotal support portion allows bending of the distal end pipe portion relative to the proximal end pipe portion. While being secured, the weight of the distal end pipe portion does not apply to the flexible pipe portion at the time of bending, and is applied to the proximal end pipe portion via the connecting member including the pivot portion. Therefore, the mechanical load on the flexible tube portion during bending can be reduced, the durability of the flexible tube portion can be improved, and the strength of the flexible tube portion can be reduced.

According to the second aspect of the present invention, the stopper of the connecting member prevents the tip tube portion from swinging downward with respect to the base end tube portion and holds the both in a horizontal linear position. The force due to the weight of the tip tube portion when it is in a horizontal straight position is not applied to the flexible tube portion, but is received by the proximal end tube portion via the stopper, which allows the flexible tube portion to be received. It is possible to improve durability and reduce strength.

[Brief description of drawings]

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

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

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

FIG. 4 is a system diagram of a drive mechanism of a metering device in the spraying device.

FIG. 5 is a view on arrow V in FIG.

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

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

8 is a side view of the rice transplanter trolley of FIG. 10 with a spraying device attached.

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

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

[Explanation of symbols]

 38 T-shaped jet (jet head) 104 Base end pipe portion 106 Flexible pipe portion 108 Tip pipe portion 114 Connecting metal fitting (connecting member) 120 Connecting shaft (pivoting part) 122 Stopper

Claims (2)

[Scope of utility model registration request] 1. A proximal pipe portion (104), a flexible pipe portion (106) and a distal pipe portion (108) are continuously connected to each other, and a connecting member (114).
Is provided with a pivotal portion (120) that allows the distal tube portion (108) to swing with respect to the proximal tube portion (104) about a substantially horizontal axis, and the proximal tube portion (104) The tip tube portion (108)
A device for bending a blast head, which is characterized in that and are interconnected. 2. The connecting member (114) is the tip tube portion.
2. A jet nozzle bending apparatus according to claim 1, further comprising a stopper (122) for preventing the (108) from swinging downward with respect to the proximal end tube portion (104).