JPS6232889B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an agricultural spraying device for spraying soil fertilizers, chemicals, and other spraying materials in a multi-row pattern.

Conventionally, for example, an agricultural spraying device attached to an agricultural tractor spreads the spray material as the tractor moves, but spreading the spray material at multiple locations in the lateral direction is performed using a screw conveyor or the like from a hopper for storing the spray material. It is configured to be fed horizontally and discharged from spray hoses arranged in parallel.

However, such a horizontal feed conveyor has a complicated structure, and it is not easy to manufacture and assemble or increase or decrease the number of spraying locations, and the amount of spraying may be uneven at each spraying location. It is difficult to distribute it evenly to the hose.

The disadvantage of such conventional devices is that the upper parts of multiple spray hoses are arranged in a circular shape, and above that there is an upper part that can rotate around the vertical axis, and while this upper part is rotated, the spray is applied to each spray hose. This can be almost eliminated by supplying the material.

However, if there is only one scattering material outlet on the rotating upper case, there will be no problem if the rotating upper case rotates at high speed, but it is difficult to make it rotate at high speed, and since it is usually synchronized with the traveling speed. , the material discharged from each spray hose becomes a widely spaced point spread (similar to spot seeding).

Such problems can be solved by configuring the hopper to collide with objects and disperse the material to be dispersed by falling and ejecting the material.

The present invention allows the spread material fed out from the hopper to fall and collide with the dispersion section, fall and collide with the dispersion material between the drop hole of the dispersion section and the discharge port below the dispersion section, or through a pipe communicating with the discharge port, and rotate the pipe. By emitting and colliding with the multi-branched pipe member below,
This system is designed to achieve good dispersion and distribution, and its features are that a feed roll 12 that can freely adjust the feed amount is arranged below the hopper 10 for storing agricultural spraying agent; A rotating upper part 23 is arranged which rotates around the vertical axis by the power from the feed roll shaft 14, and the rotating upper part 23 forms a plurality of drop holes 28 at the bottom of the upper part 25a which is spread upward. A plurality of discharge ports 30 are formed below the dispersion portion 27, and a pipe 31 is connected to each discharge port 30, and a multi-branched pipe member is provided below the pipe 31. 36 is placed.

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

1 and 2 show an agricultural spraying device 1 attached to a three-point link mechanism of an agricultural tractor together with a seeding machine 2, and a frame 4 having a horizontal tool bar 3 is attached to a pin at the rear end of the three-point link mechanism. are connected. A pair of left and right support wheels 6 that support the tool bar 3 are attached to horizontal frames 5 that protrude rearward from both ends of the tool bar 3, and the support wheels 6 roll on the work ground surface G as the tractor advances. move.

7 is a hopper for storing spray material, which is located on the toolbar 3 above.
It is fixed to the support members 8, 8 through supporting members 8, 8, and stores dispersing materials such as fertilizers and chemicals, and various planar shapes such as circular and rectangular shapes are adopted, and the lower end is a discharge mechanism. It is said to be 9.

In FIGS. 3 to 7, the ejection mechanism 9 is
A lower hopper 10 removably communicates with the lower part of the hopper 7; a casing 11 that covers the side surface of the lower hopper 10; It is configured to have a feeding section 12 for discharging the dispersion material provided as a discharging material.

The feeding section 12 has a rotating shaft 14 and a rotating shaft 14.
A female feed roll member 13 is fixed to the feed roll female member 13, and a male feed roll member 15 is slidably fitted to the rotating shaft 14 and is engaged in male and female engagement with the female member 13.
The feeding roll consisting of male and female members 13 and 15 is a known one, and by moving the male member 15 in the direction of separation from the female member 13, the feeding amount can be increased. , A is male member 1
5 shows a variable-length feeding groove into which the spread material enters when it is moved to the position shown by the imaginary line in FIG.

Two sprockets 16 and 17 are attached to the end of the rotating shaft 14 projecting from the casing 11, and a manual or electromagnetic clutch may be provided between the sprockets 16 and 17 for connecting and disconnecting power. The sprocket 16 is a power transmission shaft 5 of a drive mechanism which will be described later.
It is chain-transmitted from 5.

20 is a disc screwed onto the outer end of the shaft portion 15a of the male member 15, and serves as a handle for sliding the male member 15; 21 is a cover body that makes the casing 11 compact; In order to extend the range of movement of the male member 15, the opening 11a provided in the casing 11 is covered to prevent muddy water from entering, and the male member 15 is rotatably supported.

Reference numeral 23 denotes a rotating upper assembly disposed below the lower hopper 10 and the feeding section 12, and a concentric upper assembly 25 is welded to the upper surface of the disc 24, and a scattering blade 26 is welded to the center of the upper surface. ing.

The upper unit 25 has an upper part 25a having a substantially inverted truncated conical shape and a lower part 25b having a cylindrical shape, and a mountain-shaped dispersion part 27 extending from the upper edge of the lower part 25b to the upper center is integrally or separately in the upper part 25a. A plurality of drop holes 28 are formed in the middle of the chevron-shaped surface of the dispersion section 27, and the dispersion material falling from the dispensing section 12 is dispersed in all directions with the top section 27a. After that, it is formed to fall downward from the hole 28. This dispersion section 27 is
Alternatively, a support rod may be provided to protrude downward from the top portion 27a, and the support rod may be fixed onto the scattering wing 26 with this support rod.

The scattering blades 26 are located inside the lower part 25b and directly below the dispersion section 27, and scatter the scattering material falling from the holes 28 to more evenly disperse it.

A scattering material outlet 30 is provided in the center of the disc 24.
is formed, and an arc-shaped metal pipe 31 that communicates with the discharge port 30 and is bent outward is welded to the lower surface thereof, and discharges the spray material dispersed by the scattering blades 26 from the discharge port 30. and the pipe 31 supplies it in the required direction.

In the embodiment, four holes 28, four scattering blades 26, four discharge ports 30, and four pipes 31 are formed,
The discharge port 30 is located between the wings of the scattering feathers 26,
Two or more of these may be formed, and the more there are, the more continuously and evenly distributed material can be discharged. In addition, the male and female members 13 of the feeding roll,
The reason why the axial center of the rod 15 and the top portion 27a are eccentric is to obtain good uniformity when the feeding amount is small and often used.

An annular drive wheel 32 is provided on the upper surface of the outer circumference of the disc 24.
The drive wheel 32 is perpendicular to the sprocket 17, and has a large number of notches 32a or holes that engage the teeth of the sprocket 17 at equal intervals in the circumferential direction, so that the sprocket 17 rotates. This causes the disk 24 to rotate around the vertical axis.

Reference numeral 33 denotes a shaft serving as the rotation center of the rotating upper joint 23, which is fixed to the lower ends of the four pipes 31 via a mounting disc 34 welded to the upper part of the shaft.
It is rotatably supported by the bearing portion 37 of the multi-branched pipe member 36 via. Incidentally, if the shaft 33 is extended upward and fixed to the disk 24, the pipe 31 can also be formed of a flexible material.

The multi-branched pipe member 36 is detachably attached to the tool bar 3 or a member fixed to the tool bar 3,
It has a hose attachment part 39 for attaching a plurality of spray hoses 38.

By supporting the shaft 33 on this multi-branched pipe member 36, the entire upper joint portion 23 is rotatably supported, and while the four pipes 31 rotate within the upper portion, the spray material is transferred to the hose 38. We will distribute and supply to.
A dispersion member 40 is formed by the multi-branched pipe member 36 and the dispersion hose 38.

The hose 38 is made of a flexible material or the like, and its lower end is disposed between a rotary disk 42 and a shoe 43 supported by the tool bar 3, and the hose 38 is arranged to feed the spreading material into the groove formed by them. Can be dispersed.

In FIGS. 4 to 7, 45 is the feeding section 1
It is a guide plate for the spread material falling from 2 to the rotating upper case 23, and is formed by bending a single flat plate, and includes an attachment part 45a that is attached to the casing 11 via a bolt 46, and this attachment part 45a. From dispersion section 2
7 and an upwardly projecting inclined portion 45b.

The mounting portion 45a has two elongated holes 4 in the vertical direction.
7 is formed, two arcuate holes 48 corresponding to the elongated hole 47 are formed in the casing 11, and the bolt 46 is passed through the elongated hole 47 and the arcuate hole 48.
Both are fastened by screwing together the nut 49. The elongated hole 47 and arcuate hole 48 allow the guide plate 45 to be adjusted in vertical position and angle. Note that the elongated hole 47 may be formed in the casing 11, and the circular arc hole 48 may be formed in the mounting portion 45a.

The inclined part 45b guides the dispersion material fed into the groove A of the feeding part 12 to the top part 27a of the dispersion part 27, and is inclined two-dimensionally or three-dimensionally, so that even if the groove A is short, Even if it is long, the spread material is guided to the top 27a as much as possible.

That is, the feeding section 12 is configured to adjust the length of the groove A by changing the position of the male member 15 in order to adjust the amount of spraying, but if the groove A is long, the spray material that falls from the entire length of the groove A is It is difficult to directly apply the material to the top 27a of the dispersing section 27, and since the top 27a is located almost directly below the rotating shaft 14, the material falling from the outer periphery of the feed roll is not directly applied to the rotating shaft 14.
By providing the guide plate 45, it is possible to cause the spread material to fall at the center of the rotating upper case 23.

FIG. 8 shows a modification of the guide plate, in which the guide plate 50 is provided with left and right side walls 51 to receive the material falling from the groove A of the maximum length, collect it in a falling part 52, and then collect it in a dispersing part. In this guide plate 50, the inclined portion 53 only needs to be inclined downward.

In FIGS. 1 and 2, 55 is a power take-off shaft, which is mounted on a rigid frame 56 erected at both ends of the tool bar 3, and is a chain transmission wound between it and the support shaft 57 of the support wheel 6. It is driven via a means 58, and power can be transmitted to the sprocket 16 via a sprocket 59 and a chain 60 provided midway, so that the feeding section 12 can be operated in accordance with the traveling of the tractor. can. still,
The power take-off shaft 55 can also be driven by a specially provided motor.

Reference numeral 62 denotes the main body of the seeding machine 2, which is mounted on the tool bar 3 in a height-adjustable manner, and has a seed hopper 63 at the top, a seeding groove disk 64 and a shoe 69 in front of it, and a suppression wheel 65 behind it. Each is attached.

A vacuum device 66 is driven by the PTO shaft of the tractor via a universal joint shaft, belt transmission means, etc., and a hose 67 is connected between the vacuum device 66 and the seeding machine main body 62.

The seeding machine main body 62 has a disk provided with a seed suction hole inside, and this disk is driven by a power take-off shaft 55 through a chain transmission means 68, and is injected with air from one side by a vacuum device 66. The seeds on the other side are suctioned by suction, and the suctioned seeds are sequentially released for spot sowing or row sowing.

The dispersion action of the device 1 is such that the dispersion material in the hopper 7 is paid out by the delivery roll 12 in the required amount, and the dispersion material falls and collides with the dispersion section 27 of the rotating upper case 23 to be dispersed in all directions. It rolls down the chevron-shaped surface and falls from the drop hole 28, and enters the discharge port 3.
It falls and collides with the disk 24 forming 0 and is dispersed. The spread material placed on the disk 24 falls from the discharge port 30 by the scattering blades 26 or by rotation, and falls and collides with the pipe 31 together with the spread material going straight from the drop hole 28 to the discharge port 30. The multi-branched pipe member 36 is released by centrifugal force due to rotation.
It is further dispersed and distributed, and a uniform amount is sprayed in rows from the plurality of spray hoses 38 of the multi-branched pipe member 36.

According to the present invention described in detail above, the feeding roll 12
The required amount of spread material can be distributed substantially uniformly in all directions by colliding with the mountain-shaped dispersion section 27 of the rotating upper part 23, and even when the spread material falls from the drop hole 28 of the dispersion section 27, , when it reaches the outlet 30 or the pipe 31, the spread material is almost completely pulverized, and
By distributing the material more uniformly in all directions and discharging it from the rotating plurality of pipes 31 to the multi-branched pipe member 36, the material to be spread is constantly dispersed and evenly distributed, making it possible to achieve the best continuous line spreading. Moreover, since the rotating upper joint 23 is driven by the power from the payout roll shaft 14 which is located very close to it, a special drive system is not required and it can be driven by simple means.

[Brief explanation of the drawing]

FIGS. 1 and 2 are side and rear views, respectively, of a working machine that combines an agricultural spraying device and a vacuum seeding machine to which the present invention is applied, and FIGS. 3 to 7 illustrate embodiments of the present invention. 3 is a longitudinal sectional view, FIG. 4 is a side view of the feeding section, FIG.
The figure is a perspective view of the dispersion section, and FIG. 8 is a perspective view showing a modification of the guide plate. DESCRIPTION OF SYMBOLS 1... Agricultural spraying device, 9... Discharge mechanism, 10... Lower hopper, 11... Casing, 12... Feeding part, 1
3... Feeding roll female member, 14... Rotating shaft, 15...
Feeding roll male member, 23...Rotating upper assembly, 24...Disc, 25...Upper assembly, 26...Scattering blades, 27...Distribution part, 28...Hole, 30...Discharge port, 31...Pipe, 3
8...Spraying hose.

Claims (1)

[Claims] 1. A feed-out roll 12 that can freely adjust the feed-out amount is arranged below the hopper 10 for storing agricultural spraying agent, and below the feed-out roll 12 is a rotating upper case 23 that rotates around the vertical axis by power from the feed-out roll shaft 14. The rotating upper part 23 has a mountain-shaped dispersion part 27 in which a plurality of drop holes 28 are formed at the bottom of the upper part 25a which is spread upward, and this dispersion part 2
Agricultural spraying device characterized by having a plurality of discharge ports 30 formed below 7 and a pipe 31 communicating with each discharge port 30, and a multi-branched pipe member 36 disposed below the pipe 31. .