JP2579282Y2 - Swing nozzle device - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial applications] This invention is applied to agricultural chemicals,
The present invention relates to an oscillating nozzle device attached to a liquid sprayer or the like for spraying liquids such as liquid fertilizer and water, and more particularly, to an improved oscillating nozzle device configured such that a column supporting the nozzle is bent at a substantially intermediate portion. About.

[0002]

2. Description of the Related Art In various orchards and the like, a liquid spraying vehicle is used in which an operator rides and sprays the chemical solution or the like.

[0003] This liquid spraying vehicle is generally configured, for example, as follows.

[0004] First, a column is attached to the rear of the fuselage. The aircraft travels when a worker rides and drives. A tank for storing a liquid such as a chemical solution or water is mounted on a rear portion of the body.

[0005] The support column is provided with an appropriate number of nozzles toward the left and right sides in the traveling direction of the body. Each of these nozzles is supported by the column so that the nozzle head swings, and all the nozzles are configured to swing together. The spraying liquid can be efficiently sprayed over a wide range by swinging the nozzle in conjunction with the operation of a driving device provided on the machine body.

In the spraying vehicle having the above-described structure, it is preferable that the column is lengthened and the liquid is sprayed from a higher position in order to widen the spraying range of the spraying liquid.

[0007] On the other hand, if the props are lengthened, there is an inconvenience that the spreader truck is obstructed when it is stored in a warehouse.

[0008] Therefore, conventionally, the column has been configured to be bent, and the column has been stored in a warehouse in a folded state. That is, the strut is divided into an upper strut and a lower strut around its middle part, and both are hinged.

As described above, the upper column and the lower column are provided with a suitable number of nozzles in multiple stages so as to be able to swing up and down and back and forth. Each of the nozzles provided on the lower column is powered by one drive motor of the drive device and swings in conjunction therewith. For this reason, a gear or a chain is arranged in each column to transmit power to each nozzle, and a gear that meshes with an upper end portion in the lower column and a lower end portion in the upper column is provided. When the upper support is folded, the meshing of the gears is released, and when the upper support stands, the gears mesh with each other, and the nozzle provided on the upper support and the nozzle provided on the lower support work together. To swing up and down and back and forth.

[0010]

However, in the prior art, each of the nozzles of the upper support and the nozzles of the lower support have a lower end in the upper support and an upper end in the lower support. Since the gears are provided so as to interlock with each other, there is a problem that loud noise is generated due to the meshing of the gears.

If the upper support is not properly mounted on the lower support, the gears do not mesh well with each other, so that the upper support must be mounted with great care. .

Furthermore, if so-called play occurs at the connecting portion between the upper support and the lower support due to long use, the gears do not mesh with each other even if the upper support is set on the lower support. There was an inconvenience.

The present invention has been made in view of the above-mentioned circumstances, and is an oscillating nozzle device provided with a bending column, in which the nozzle of the upper column and the nozzle of the lower column are always, without difficulty, quietly and surely. It is an object of the present invention to provide a swing nozzle device that swings in conjunction with the swing nozzle device. .

[0014]

In order to solve the above-mentioned problems, the present invention is directed to an upper column and a lower column which are connected to each other so that the upper column and the lower column can be bent. Are held horizontally at appropriate intervals in the direction, nozzles are provided at both ends of the respective cam drive shafts via eccentric cams so as to be swingable, respectively, at a connection portion between the upper column and the lower column. Are connected to each other in the same direction as the cam drive shafts, and all the rotating shafts including the connecting portion rotating shafts are adjacent to each other so as to rotate in conjunction with each other. The upper support is linked by a transmission means, and the upper support is configured to be able to bend freely around the axis of the connecting portion rotating shaft.

[0015]

The oscillating nozzle device according to the present invention performs the spraying work by setting the upper support on the lower support. When a rotational force is applied to any of the cam drive shafts held by the upper support or the lower support by an appropriate drive device, all the rotation shafts including the connection portion rotation shaft interlock with each other via the transmission means. To rotate. As a result, the nozzles provided on the respective cam drive shafts held by the upper support and the lower support swing simultaneously via the eccentric cams.

On the other hand, when the spraying operation is completed, the upper column is folded down. At this time, the upper support
It is tilted around the axis of the connecting portion rotating shaft provided at the connecting portion with the lower support. Therefore, even if the upper support is bent, the mechanism for interlocking the nozzles existing inside the upper support is not affected at all.

As described above, the device of the present invention does not apply any force to the upper column even if the upper column is raised or lowered, and the operation is smooth.

[0018]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic view showing a liquid spraying vehicle equipped with an oscillating nozzle device according to an embodiment of the present invention. In the drawing, reference numeral 1 denotes the body of a liquid sprayer, 2 denotes a driver's seat,
Reference numeral 3 denotes a traveling device. A tank 4 is provided on the body 1 at a position behind the driver's seat 2. The tank 4 stores a spray liquid such as a pesticide.

A main body hitch 5 is provided at the rear of the body 1, and the swing nozzle device 6 of the present invention is directly mounted on the main body hitch 5.

As shown in FIG. 2, the oscillating nozzle device 6 (the piping system for the spray liquid which is not related to the gist of the present invention is omitted) has an upper column 7 and a lower column 8 connected vertically. The upper strut 7 is bent over the tank 4 toward the front of the body 1 and falls.

Each of the upper support 7 and the lower support 8 is made of a hollow metal square pipe or the like. A shaft member 9 is provided above the lower support 8.
Both end portions are horizontally inserted toward the side of the body 1. The shaft member 9 is held at an upper portion of the lower support 8 via a bearing 10 so that the shaft member 9 can rotate freely (hereinafter, the shaft member 9 is referred to as a “connecting portion rotating shaft”).

The left and right corresponding sides of the lower part of the upper support 7 and the upper part of the lower support 8 are connected to each other by connecting members 11 and 1.
They are linked by one. The connecting members 11 are fixedly attached to the upper column 7, while the lower column 8 receives the force of a certain degree or more from the body 1 around the connecting portion rotating shaft 9. It is stopped so as to rotate in the front-rear direction.

In the embodiment shown in the drawings, as shown in FIG.
2 is attached. The covers 12, 12 cover both ends of the connecting portion rotating shaft 9 projecting left and right. On the surfaces of the covers 12, 12, circular projections 13, 13 are provided, respectively. The center of each of the circular protrusions 13 is the rotation axis X of the connecting portion rotation shaft 9.
It is located on the extension of 1. The connecting members 11, 11
A connecting plate is used as a hole, and a circular hole 1 fitted with the circular protruding portions 13 is formed below the connecting plate 11.
4, 14 are provided. And the circular projection 1
After attaching the connecting plates 11 and 11 to the covers 12 and 12 so that the circular holes 14 and 14 fit with each other, the holding members 15 and 15 are tightened from above, and the connecting plates 11 and 11 are removed. The upper portions 11a, 11a are
It is screwed to the left and right sides of the lower part of.

Although not shown, the circular protrusion 1
Appropriate moderation means are interposed between the circular holes 3 and 13 and the circular holes 14 so that the upper column 7 is held upright during work.

The upper support 7 and the lower support 8 include
Appropriate number of shaft members 16a, 16b, 17a, 17b, 17c
However, at an appropriate interval between each of them,
And 8 penetrating horizontally. Both ends of these shaft members 16a, 16b, 17a, 17b, 17c protrude to the left and right sides of the columns 7 and 8 (FIG. 3).
reference). Then, the shaft members 16a, 16b, 17
a, 17b, and 17c are supported by the columns 7, 8 via bearings 18, respectively, and are held by the columns 7, 8 so as to freely rotate about the axis X2 thereof (hereinafter, the upper portion). Shaft members 16a, 1 provided on the support 7
6b is an “upper support cam drive shaft”, and the shaft members 17a, 17b, and 17c provided on the lower support 8 are “lower support cam drive shaft”.

Each of the upper column cam drive shafts 16a, 16
b, the lower column cam drive shafts 17a, 17b, 17c and the connecting portion turning shaft 9 are all connected to each other by an appropriate transmission means so as to turn in conjunction with each other.

That is, for example, each of the upper column cam drive shafts 16a, 16b and each lower column cam drive shaft 17a, 1
Two sprockets 19 are respectively mounted on the left and right sides of the connecting portion rotating shaft 9 and the connecting portions 7b and 17c. These sprockets 19 are located in the columns 7 and 8. The sprockets 19 mounted on the vertically adjacent rotating shafts are connected by an endless chain 20. As a result, if a rotating force is applied to any of the rotating shafts, all the rotating shafts 16a, 16
b, 17a, 17b, 17c and 9 rotate in conjunction with each other.

In the embodiment shown in the drawings, a driving device 21 such as a motor is attached to the lower portion of the lower support 8 so that the drive shaft 22 protrudes into the lower support 8 and is connected via an appropriate chain or sprocket. , The driving device 21
The rotational force is appropriately reduced and transmitted to the lowermost cam drive shaft 17c of the lower support 8.

Each of the upper column cam drive shafts 16a, 16b
And each of the lower column cam drive shafts 17a, 17b, 17c.
Eccentric cams 23 each having a circular cross-section are attached to both outer ends of the cam. These eccentric cams 23 are larger in diameter than the cam drive shafts 16a, 16b, 17a, 17b, 17c and have an appropriate thickness. Each of the eccentric cams 23 has a cam drive shaft 16a, 16b, 1
The rear end portion 2 of the nozzle tube 25 via a spherical bearing 24 disposed radially outward from the axis X2 of 7a, 17b, 17c.
5a are respectively attached. As a result, when each of the cam drive shafts 16a, 16b, 17a, 17b, 17c rotates, the rear end 25a of each of the nozzle tubes 25 responds accordingly to the respective cam drive shafts 16a, 16b, 17a, 1.
A circular motion is performed about the axis X2 of 7b and 17c.

Each of the nozzle tubes 25 extends to the left and right sides of the body 1. Each nozzle tube 25 is designed to have an appropriate length so as not to be too long. If it is too long,
This is because there is a risk that the spraying vehicle may be caught by the trees or the like when traveling between the trees in the orchard. In order to avoid the same danger, the left and right widths of the upper column 7 and the lower column 8 are made as narrow as possible, and the left and right projections of the nozzle tube 25 held by the columns 7 and 8 are shortened. It is desirable to do.

Each of the nozzle tubes 25 is supported by a U-shaped support member 26 in the middle of its length direction. Then, both ends of each nozzle tube 25 can freely swing up and down around the horizontal shaft fulcrum 27. The U-shaped support member 26 includes:
The bracket 28 is attached to the tip of the bracket 28 so as to be rotatable around a vertical axis X3. The brackets 28 are attached to the left and right side surfaces of the upper column 7 and the lower column 8, respectively, and support the nozzle tube 25 via the U-shaped support member 26.

The spray liquid stored in the tank 4 is sent to each of the nozzle tubes 25,
Liquid supply hoses 29 for applying an appropriate braking force to the swing of the nozzle and smoothing the movement are connected to each other, and the tip of each nozzle tube 25 is used to spray the spray liquid over a wide range. A nozzle 30 is attached.

Next, the operation of the oscillating nozzle device of the present embodiment configured as described above will be described.

When performing the spraying operation, the upper support 7
Is erected on the lower support 8. The driving device 21
Is operated, the lower column cam drive shaft 17c provided at the lowermost side of the lower column 8 rotates. The rotational force of the lower column cam drive shaft 17c is applied to all the rotation shafts (the lower column cam drive shafts 17b and 17a, the connecting portion rotation shaft 9, and the upper column cam drive shaft) by the sprockets 19 and the chains 20. 16b, 16a).

Each of the lower column cam drive shafts 17a, 17
b, 17c and the upper column cam drive shafts 16a, 16
b, the eccentric cams 23 provided at both outer ends of the respective cam drive shafts cause the nozzle pipes 2 to rotate.
5, a rear end portion 25a makes a circular motion about the axis X2 of each cam drive shaft. Here, each of the nozzle tubes 25 is supported by each of the U-shaped support members 26 such that both ends thereof freely swing up and down.
Are supported by the brackets 28 so as to freely rotate about the vertical axis X3. Therefore, when the rear end portion 25a of each nozzle tube 25 makes a circular motion, each nozzle tube 25 swings up and down around the shaft fulcrum 27, and the U-shaped support member 26 reversely rotates. Through the tip of each nozzle tube 25, ie, each nozzle 3
0 also makes a swing motion at the same time.

In this manner, the nozzles 30 swing in conjunction with each other without any difficulty, and the spray liquid stored in the tank 4 can be sprayed over a wide range.

On the other hand, when the spraying vehicle provided with the oscillating nozzle device is stored in a warehouse or the like, the upper support 7 can be tilted forward of the body 1 so that the upper support 7 is upright.
In the case where the upper strut 7 collides with a branch or the like, the upper strut 7 is configured to fall in the front-rear direction around the axis X1 of the connecting portion rotating shaft 9, so that a mechanism provided inside each strut is provided. Has no effect.

Preferably, the swing mechanism of each nozzle tube 25 and the bent portions of the upper column 7 and the lower column 8 are covered with an appropriate cover to prevent the intrusion of spray liquid and the like.

[0040]

According to the oscillating nozzle device of the present invention,
Even when the upper support is set up or tilted, the mechanism inside the support to swing the nozzle in conjunction with it does not take any effort, and there is an effect that the nozzle always swings in conjunction with the nozzle without fail .

Also, in the device of the present invention, unlike the prior art, the nozzle of the upper column and the nozzle of the lower column are linked by gears provided at the lower end in the upper column and the upper end in the lower column. Not something. Therefore, the nozzle of the upper column and the nozzle of the lower column are quietly linked with each other, and even if the upper column is frequently raised or lowered due to long-term use, the connection between the upper column and the lower column is performed. This has the effect of making it difficult to damage the components.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a liquid sprayer equipped with an oscillating nozzle device according to an embodiment of the present invention as viewed obliquely from the rear.

FIG. 2 is an overall perspective view showing the internal structure of the oscillating nozzle device shown in FIG.

FIG. 3 is a longitudinal sectional view of a main part of the oscillating nozzle device shown in FIGS. 1 and 2;

[Explanation of symbols]

 Reference Signs List 7 upper support 8 lower support 9 connecting part rotating shaft 16a, 16b, 17a, 17b, 17c cam driving shaft 23 eccentric cam 30 nozzle X1 axis of connecting part rotating shaft

Claims (1)

(57) [Scope of request for utility model registration] 1. An upper column 7 and a lower column 8 are connected so as to be able to bend, and an appropriate number of cam drive shafts 16a, 16b, 17a, 17b, 17c are vertically attached to these columns 7, 8 respectively. The cam drive shafts 16a, 16b, 17a, 17b, and 17c are horizontally held at appropriate intervals, and nozzles 30 are provided at both ends of the cam drive shafts 16 via eccentric cams 23 so as to be swingable. Each of the cam drive shafts 16a, 16b, 17
a, 17b, and 17c are held, and all the rotating shafts including the connecting portion rotating shaft 9 are adjacent to each other so as to rotate in conjunction with each other. Are linked by transmission means 19 and 20, and the upper column 7 is refractible around the axis X1 of the connecting portion rotating shaft 9.