JP2022083806A - Fertilizer spreader - Google Patents

Abstract

To provide a fertilizer spreader which can blend fertilizers approximate to an inner wall of a hopper when blending the fertilizers in the hopper which is formed into a tapered shape.SOLUTION: In a fertilizer spreader 1 having a hopper 2 which is formed into a tapered shape so that an inner width is gradually narrowed toward a lower part, a blending part 4 for blending fertilizers accommodated in the hopper 2, and a spreading part 5 for spreading the fertilizers which are blended in the blending part 4 toward a field, the blending part 4 comprises an agitation vane 42 attached to a rotating shaft, and an abutment member 45 constituted of rubber or the like which abuts on an inner wall of the hopper 2 is arranged at a rear end of the agitation vane 42 in a rotation direction. When attaching the abutment member 45, a bent member 46 is attached to a rear end of the agitation vane 42, and the plane-shaped abutment member 45 is sandwiched between the bent member 46 and the agitation vane 42, and bent.SELECTED DRAWING: Figure 4

Description

Patent Law Article 30, Paragraph 2 Application Applicable Performance test conducted in the field of Toki Toshio on April 9, 2nd year of Reiwa

The present invention relates to a fertilizer spreader for spraying fertilizer in a field, and more particularly to a fertilizer spreader capable of mixing fertilizer in the vicinity of a hopper wall surface.

Generally, a large fertilizer spreader is configured to spread fertilizer on a field while being towed by a towing vehicle such as a tractor. The general structure of such a fertilizer spreader will be described with reference to FIG. 7.

In FIG. 7, reference numeral 2 is a horizontally long hopper towed by a towing vehicle such as a tractor (not shown) so that fertilizer can be put into the inside. Further, reference numeral 4a is a mixing unit for mixing a plurality of types of fertilizers charged into the hopper 2, and the fertilizers are uniformly mixed by the stirring blade 42a. Further, reference numeral 5 is a spraying portion provided at the lower part of the hopper 2 so that fertilizer is dropped from the intermittent hole portion 26 provided at the bottom plate. When the fertilizer is sprayed using such a fertilizer spreader, the fertilizer is put into the hopper 2 and mixed uniformly in the mixing portion 4a, and the fertilizer is dropped from the hole 26 provided in the lower part of the hopper 2. (Patent documents below, etc.).

Japanese Unexamined Patent Publication No. 2019-201563

However, when the fertilizer is mixed in the hopper of such a fertilizer spreader, there are the following problems.

That is, in general, the hopper is configured in a tapered shape so that the inner width becomes narrower toward the bottom, whereas the mixing portion rotates the stirring blade attached to the rotation axis in the left-right direction. It is configured. Therefore, there is a problem that the fertilizer outside the radius of gyration of the stirring blade cannot be stirred by the stirring blade, and the fertilizer remaining on the inner wall must be cleaned after the fertilizer is sprayed.

On the other hand, the inner wall of the hopper may be configured to form a cylindrical shape to reduce the gap between the stirring blade and the inner wall. When the hopper is distorted due to this, there is a problem that the stirring blade hits the inner wall.

Therefore, the present invention has been made by paying attention to the above-mentioned problems, and when mixing fertilizer in a hopper configured in a tapered shape, fertilizer spraying so that fertilizer close to the inner wall of the hopper can also be mixed. The purpose is to provide an opportunity.

That is, in order to solve the above-mentioned problems, the present invention is configured in a tapered shape so that the inner width gradually narrows downward, and a hopper containing fertilizer inside and a fertilizer contained in the hopper are mixed. In a fertilizer spreader including a mixing section for sprinkling and a spraying section for spraying fertilizer mixed in the mixing section toward a field, the mixing section is provided with a stirring blade attached to a rotating shaft. The stirring blade is provided with a flexible contact member that contacts the inner wall of the hopper.

With this configuration, the flexible contact portion is brought into contact with the inner wall of the hopper and rotated so as to slide, so that fertilizer near the inner wall can also be mixed.

Further, in such an invention, the contact member is attached to the rear end side in the rotation direction of the stirring blade.

With this configuration, fertilizer can be scooped up and stirred at the front and center portions of the stirring blade, and fertilizer near the wall surface can be mixed at the rear end portion.

Further, the contact member is bent from the rear end side in the rotation direction of the stirring blade toward the inner wall of the hopper.

With this configuration, even the stirring blade whose rear end side is inclined toward the inside of the center of rotation can be brought into contact with the inner wall of the hopper by the abutting member.

Further, a bending member that bends toward the inner wall of the hopper is attached to the rear end side of the stirring blade in the rotational direction so that the contact member is sandwiched between the bending portion and the stirring blade.

With this configuration, it is possible to bend the stirring blade from the rear end portion and bring it into contact with the inner wall simply by attaching a flexible member such as flat rubber.

Further, when a reinforcing member for preventing deformation of the hopper is attached in the front-rear direction of the hopper, the contact member may be provided with a groove for avoiding the reinforcing member.

With this configuration, the reinforcing member can be avoided by the groove, so that the tip portion does not come into contact with the reinforcing member and is deformed.

According to the present invention, a hopper having a tapered shape such that the inner width gradually narrows downward and containing fertilizer inside, and a mixing portion for mixing fertilizer contained in the hopper, and the mixing thereof. In a fertilizer sprayer provided with a spraying section for spraying fertilizer mixed in a section toward a field, the mixing section is configured to include a stirring blade attached to a rotating shaft, and the stirring blade is provided with the above. Since a flexible contact member that contacts the inner wall of the hopper is provided, the flexible contact portion is brought into contact with the inner wall of the hopper and rotated so as to slide, so that fertilizer near the inner wall is fertilizer. Will also be able to mix.

A side view of a fertilizer spreader showing an embodiment of the present invention. Schematic diagram showing a mixing part and a spraying part of a fertilizer sprayer in the same form The figure which shows the stirring blade of the mixing part in the same form. The figure which shows the stirring blade and the contact member in the same form. The figure which shows the groove of the reinforcing member of the hopper and the contact member in the same form. The figure which shows the spray part in the same form The figure which shows the fertilizer spreader of the conventional example

Hereinafter, the cover opening / closing structure used in the fertilizer spraying device according to the embodiment of the present invention will be described with reference to the drawings.

The fertilizer spraying device in this embodiment is towed and used by a towing vehicle such as a tractor, and is housed in a hopper 2 for storing fertilizer and the hopper 2 as shown in FIG. It is configured to include a mixing section 4 for uniformly mixing fertilizer, a spraying section 5 provided below the hopper 2, and the like, which is characteristically provided in the mixing section 4 as shown in FIG. A flexible contact member that contacts the inner wall of the hopper was attached to the rear end of the stirring blade 42, and the contact member was brought into contact with the inner wall so that fertilizer near the inner wall could be mixed. It is a thing. Hereinafter, the present embodiment will be described in detail.

The hopper 2 of this fertilizer spraying device is configured to be horizontally long, and is configured to accommodate fertilizer in an interior provided with the cover 3 opened. Specifically, as shown in FIG. 1, the hopper 2 has an upper front plate 21f and an upper rear plate 21b provided so as to face each other in the front-rear direction, and a gap in the front-rear direction gradually downward below the upper front plate 21f and the upper rear surface plate 21b. An intermediate inclined plate 22 having a reduced width, a lower inclined plate 23 provided below the intermediate inclined plate 22 and a smaller inner gap width, and a lower inclined plate 23 provided below the lower inclined plate 23, and a spraying portion 5 A bottom wall 24, a bottom plate 25, and the like surrounding the agitator 53 of the above are provided. Further, as shown in FIGS. 1 and 5, a T-shaped reinforcing member 27 is intermittently provided in the upper opening 20 of the hopper 2 in the left-right direction, and the reinforcing member 27 is used. The hopper 2 can be prevented from being deformed.

The mixing portion 4 provided inside the hopper 2 agitates the fertilizer contained in the hopper 2 so that the fertilizer can be dropped from the hole 26 (see FIG. 6) of the bottom plate 25. The driving force from the PTO of the tractor is transmitted to the mission 6 (see FIG. 2) to rotate the stirring blade 42 together with the rotating shaft 41 of the hopper 2.

The spraying portion 5 provided at the lower part of the hopper 2 is designed so that the fertilizer brought to the center by the stirring blade 42 is dropped toward the field, and the hole portion 26 provided intermittently in the bottom plate 25 (FIG. 6), a shutter 51 that closes the hole 26, a slide mechanism that slides the shutter 51, and the like. This slide mechanism is configured to slide the shutter 51 provided below the bottom plate 25 in the left-right direction, and is sprayed by overlapping the rectangular opening portion 51a with the hole portion 26 of the bottom plate 25. The amount can be adjusted. Further, the spraying portion 5 is provided with an agitator 53, and the fertilizer can be dropped from the hole portion 26 by rotating the blade 54 provided on the rotating shaft 52.

In such a configuration, the mixing unit 4 for uniformly mixing the fertilizer is configured as follows.

First, a pair of rotating shafts 41 are provided in the front-rear direction of the hopper 2 and are configured to be driven by the mission 6 (see FIG. 2) so as to rotate so that the central portions thereof face upward. ..

On the other hand, the stirring blades 42 provided on the outer peripheral portion of the rotating shaft 41 are attached so as not to interfere with the stirring blades 42 provided on the front and rear rotating shafts 41, and fertilizer is applied by the rotation thereof. It is configured to be agitated and uniformly mixed. The stirring blade 42 is attached to the tip portion of two thin plate-shaped arms 43 having a plane along the rotation direction thereof, but the front edge portion of the arm 43 is linear along the radial direction. When rotating the rotating shaft 41, the fertilizer hits the front edge portion of the linear arm at the same time, and a large load is applied to the rotating shaft 41. Therefore, in this embodiment, the shape has a leading edge portion curved so that the tip side is delayed with respect to the rotation direction, whereby the load applied to the leading edge portion of the arm 43 is distributed along the leading edge portion. I try to let you.

The stirring blade 42 attached to the tip of the arm 43 is such that the fertilizer contained in the hopper 2 is uniformly mixed, and the front plate portion 42a and the rear plate made of one thin plate-shaped member are uniformly mixed. It is configured to include a portion 42b or the like.

Of these, the front plate portion 42a is provided on the tip side of the stirring blade 42 in the rotational direction, and has a convex edge portion 42e in which the central portion of the tip is curved in a convex shape, as shown in FIG. It is configured as follows. As a result, even when the fertilizer hits the convex edge portion 42e, the load of the fertilizer is dispersed along the curved edge so that a large load is not applied. Further, when the convex edge portion 42e curved in this way is provided, when the stirring blade 42 is rotated, the fertilizer that hits the edge of the convex edge portion 42e convects in a vortex manner, so that the stirring blade 42 can be swiftly rotated. You will be able to mix fertilizer.

On the other hand, the rear plate portion 42b provided behind the front plate portion 42a is formed so as to be bent or curved from the front plate portion 42a toward the inside of the center of rotation, and both the left and right sides are parallel to each other. It is composed of a substantially rectangular shape. By forming such a shape, the amount of fertilizer scooped on the inner surface of the stirring blade 42 is increased to facilitate mixing, and a space for attaching the arm 43 is secured on the inner surface thereof. When the rear plate portion 42b is bent or curved from the front plate portion 42a in this way, the front plate portion 42a of the stirring blade 42 is set to a position close to the inner wall of the hopper 2, and the rear plate portion 42b is provided. , Bend it so that it is located at a position slightly away from the inner wall of the hopper 2. Then, by configuring in this way, the fertilizer near the inner wall of the hopper 2 is brought closer to the center side and stirred.

Then, as shown in FIGS. 1 and 3, a flexible contact member that contacts the inner wall of the hopper 2 is provided at the rear end of the stirring blade 42 configured in this way.

The contact member 45 is a material that comes into contact with the inner wall of the hopper 2 and bends, and is made of, for example, a plate-shaped resin made of rubber, silicon, or the like. When the contact member 45 is provided at the rear end of the stirring blade 42, since the rear end side of the stirring blade 42 is located at a position slightly away from the inner wall of the hopper 2, the rear end of the stirring blade 42 is directed toward the inner wall of the hopper 2. I am trying to install it.

When the abutting member 45 is attached toward the inner wall of the hopper 2 in this way, the abutting member 45 may be molded so as to be bent in advance and attached to the rear end of the stirring blade 42. If this is done, the molding process of the contact member 45 will be costly. Therefore, here, the contact member 45 is configured in a planar shape, and a bending member 46 bent toward the inner wall of the hopper 2 as shown in FIG. 4 is provided on the rear end side of the stirring blade 42. Be sure to attach it. Then, the contact member 45 is sandwiched between the bending member 46 and the stirring blade 42, and the contact member 45 is forcibly bent by the bending member 46 so as to come into contact with the inner wall of the hopper 2.

As shown in FIG. 4, the bending member 46 has a width equivalent to that of the rear end side edge portion of the stirring blade 42, and has a front plate portion 46a provided in parallel with the rear plate portion 42b and the stirring blade 42. It is configured to have a rear plate portion 46b in which a portion protruding from the rear end side is bent, and a contact member is sandwiched between the bent member 46 and the rear plate portion 42b, and bolts or nuts are used. To conclude. Then, the flat contact member 45 is bent toward the inner wall of the hopper 2 by the rear plate portion 46b, and the tip end side thereof is brought into contact with the inner wall of the hopper 2.

When the contact member 45 is provided in this way, the bent portion between the upper front plate 21f (upper rear surface plate 21b) and the intermediate inclined plate 22 or the bent portion between the intermediate inclined plate 22 and the lower inclined plate 23 is also provided. Keep it long enough to make it abut. However, if the length is set to such a length, the tip portion of the abutting member 45 comes into contact with the reinforcing member 27 provided in the opening 20 of the hopper 2, and the abutting member 45 comes into contact with the edge of the reinforcing member 27. Will hit and the tip will be cut or deformed. Therefore, as shown in FIGS. 3 and 5, a groove 45a for avoiding contact with the reinforcing member 27 is provided in a portion that abuts on the reinforcing member 27, whereby cutting or deformation can be prevented. To do so.

Next, the operation when the fertilizer is mixed by using the fertilizer spreader 1 configured as described above will be described.

First, when the fertilizer is put into the hopper 2, the cover 3 is opened and the bagged chemical fertilizer is put into the upper opening 20. At this time, the fertilizer is added so as to be uniform along the horizontally long direction of the hopper 2, and similarly, other types of chemical fertilizer are also added sequentially from above. At this time, the added fertilizer is stored in the hopper 2 in a layered manner.

After the fertilizer is added in this way, the rotating shaft 41 of the mixing unit 4 is rotated to uniformly mix the fertilizer in the hopper 2.

When the fertilizer is mixed in this way, a pair of front and rear rotating shafts 41 are rotated so that their central portions face upward. Then, the rotation of the stirring blade 42 causes the fertilizer to be mixed while being scooped by the stirring blade 42. At this time, the fertilizer is scooped up by the front plate portion 42a of the stirring blade 42, and the rear plate portion 42b inclined inward. While collecting the fertilizer inside, stir it.

When the stirring blade 42 is rotated in this way, the contact member 45 attached to the stirring blade 42 comes into contact with the inner wall of the hopper 2 and lifts the fertilizer near the inner wall while bending so that it can be sent in the rotation direction. To go. As a result, fertilizer near the inner wall can be mixed, and in particular, the bent portion between the upper front plate 21f (upper rear surface plate 21b) and the intermediate inclined plate 22 and the bent portion between the intermediate inclined plate 22 and the lower inclined plate 23. It will be possible to mix the fertilizer that has accumulated in the wall. At this time, when the amount of fertilizer is large and the resistance is large, the bent contact member 45 releases the force along the rotation direction, and when the remaining amount is low and the resistance becomes small, the contact is made. The member 45 is returned to the bent state so as to come into contact with the inner wall.

Further, when the contact member 45 comes into contact with the edge of the reinforcing member 27 during the rotation of the contact member 45, the edge of the reinforcing member 27 can be avoided by the groove 45a of the contact member 45, and the contact member can be avoided. Try to prevent cutting of 45.

Then, after the fertilizer is mixed in this way, the rotating shaft 52 of the agitator 53 of the spraying portion 5 is rotated, and the fertilizer is brought closer to the hole portion 26 by the blade 54 attached to the rotating shaft 52. Then, the shutter 51 covering the hole 26 is slid, and the amount of spraying is adjusted while adjusting the amount of overlap with the opening portion 51a of the shutter 51 so that the fertilizer is dropped.

As described above, according to the above embodiment, the hopper 2 which is configured in a tapered shape so that the inner width gradually narrows downward and contains the fertilizer inside and the fertilizer contained in the hopper 2 are mixed. In the fertilizer sprayer 1 provided with the mixing unit 4 to be mixed and the fertilizer spraying unit 5 to spray the fertilizer mixed in the mixing unit 4 toward the field, the mixing unit 4 is agitated attached to the rotary shaft 41. Since the stirring blade 42 is provided with a flexible contact member 45 that abuts on the inner wall of the hopper 2, the flexible contact member 45 is provided on the inner wall of the hopper 2. Fertilizer near the inner wall can be mixed by contacting with.

The present invention is not limited to the above embodiment, and can be carried out in various embodiments.

For example, in the above embodiment, the contact member 45 is made of a single plate-shaped rubber or the like, but it can also be made of a brush or a broom-shaped contact member. Then, the vicinity of the tip of the brush or broom-shaped contact member is brought into contact with the inner wall of the hopper 2, and the edge of the reinforcing member 27 is passed through the gap between the brush or broom-shaped contact member to be brought into contact with the reinforcing member 27. Make sure that the members do not deform.

Further, in the above embodiment, as the hopper 2, the polygonal hopper 2 has been described as an example, but the hopper 2 can also be applied to a cylindrical hopper. Further, it can be applied not only to such a horizontally long hopper but also to an inverted conical hopper.

Further, in the above embodiment, the contact member 45 is attached to the rear end side of the stirring blade 42, but the contact member 45 is provided so as to stand up from the outer surface of the stirring blade 42, and the inner wall of the hopper 2 is provided. It may be brought into contact with.

1 ... Fertilizer spreader 2 ... Hopper 25 ... Bottom plate 26 ... Hole 4 ... Mixing part 42 ... Stirring blade 45 ... Contact member 45a ... Groove 46 ...・ Bending member 5 ・ ・ ・ Spraying part 6 ・ ・ ・ Mission

Claims (5)

A hopper that is tapered so that the inner width gradually narrows downward and stores fertilizer inside.
A mixing part that mixes fertilizer contained in the hopper,
A spraying part that sprays the fertilizer mixed in the mixing part toward the field,
In a fertilizer spreader equipped with
The mixing section is configured with a stirring blade attached to a rotating shaft.
A fertilizer spreader characterized in that the stirring blade is provided with a flexible contact member that contacts the inner wall of the hopper. The fertilizer spreader according to claim 1, wherein the contact member is attached to the rear end side in the rotation direction of the stirring blade. The fertilizer spreader according to claim 1, wherein the contact member is attached so as to bend from the rear end side in the rotation direction of the stirring blade toward the inner wall of the hopper. Claim 1 is provided with a bending member attached to the rear end side in the rotation direction of the stirring blade and bending toward the inner wall of the hopper, and the contact member is sandwiched between the bending portion and the stirring blade. The fertilizer spreader described in. The fertilizer sprayer according to claim 1, wherein the contact member is provided with a groove for avoiding a reinforcing member provided in the front-rear direction of the hopper.

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