Fertilizer distributor

Abstract

To provide a fertilizer distributor with a simple configuration capable of supplying various types of fertilizers including a powder fertilizer, a high-moisture fertilizer, an organic fertilizer, etc. in a hopper to a distribution part in a reliable manner while preventing a bridge phenomenon, which includes an agitator capable of blending a plurality of fertilizers in the hopper.SOLUTION: An agitation part of a fertilizer distributor includes a hopper, an agitator, and a first motor for rotationally driving the agitator. A distribution part includes a base part, a second motor attached to the base part, and a distribution rotary body attached to the second motor and rotationally driven. The fertilizer agitated by the rotation of the agitator driven by the first motor in the hopper is caused to be dropped on a distribution part side from the bottom part of the hopper, and the dropped fertilizer can be distributed in a desired distribution direction by the rotation of the distribution rotary body driven by the second motor. The agitator can be rotated at a speed different from that of the rotation of the distribution rotary body.

Description

Technical Field

[0001] The present invention relates to a fertilizer spreader that separates a motor for stirring fertilizer in a hopper from a motor for rotating a spraying unit that sprays the fertilizer stirred in the hopper, and can change an agitator for stirring according to the properties of the fertilizer.

Background Art

[0002] For example, a conventional spraying device as shown in Patent Document 1 includes a hopper for accommodating a material to be sprayed, an agitator disposed in the hopper and stirring the material to be sprayed while reciprocatingly rotating about a vertical rotation center axis, and a spraying body that sprays the material to be sprayed discharged from the discharge port of the hopper from a spraying port while reciprocatingly rotating together with the agitator. However, in such a spraying device, for example, when the material to be sprayed is a relatively easily solidified powder or rice bran, there is a risk of a bridging phenomenon of the material to be sprayed occurring in the hopper depending on the type of the material to be sprayed.

[0003] In order to prevent the bridging phenomenon, a spraying device shown in Patent Document 2 has been proposed. This includes a container for accommodating a material to be sprayed, an agitator disposed in the container and stirring the material to be sprayed while reciprocatingly rotating about a vertical rotation center axis, and a bridge prevention body having one end attached to the container and the other end attached to the agitator, which prevents the occurrence of a bridging phenomenon of the material to be sprayed in the container.

[0004] Moreover, various inventions and the like have been proposed regarding fertilizer spreaders that prevent the occurrence of the bridging phenomenon. Patent Document 3 discloses a fertilizer spreader that rotates an input shaft provided horizontally, thereby forming a swing device that swings with a swing center perpendicular to the vertical direction on the extension line of the input shaft, and the fertilizer is spread by a spread cylinder provided on this swing device. An agitator in the hopper above the swing device is provided with stirring blades, the rotation axis of this agitator is made the same as the swing center of the swing device, and the swing device and the agitator are interlocked by a ratchet mechanism to convert the swing motion into a rotational motion to rotate the agitator and stir and mix the fertilizer. Further, Patent Document 4 discloses a fertilizer spreader in which a blower case for storing a blower wheel that rotates about a vertical axis center line and a hopper equipped with an agitator that rotates about a vertical axis center line in its inner cavity are vertically stacked and mounted so that the hopper is located above the blower case, and the rotation axis of the agitator in the hopper is conducted through a clutch that can be "engaged" and "disengaged" to a central drive shaft that is shaft-mounted on the machine body such that the upper end side penetrates into the hopper. The axial center part of the blower wheel in the blower case is connected to an outer cylinder shaft that is fitted on the outer circumference of the lower end side of the central drive shaft and shaft-mounted on the machine body, and the central drive shaft and the outer cylinder shaft are conducted to an input shaft through separate conduction mechanisms to drive the blower wheel and the agitator to rotate at different rotational speeds. Furthermore, Patent Document 5 discloses a fertilizer spreader in which a spreading means is provided below the hopper, a transmission part is provided below the spreading means, and a prime mover for driving this transmission part is unitized and mounted on a loading frame such as a mobile trolley. And it is configured to be able to spread from one side end of the loading frame, the spreading means is protrudingly arranged on the side end of the hopper toward the loading frame side, and the agitator of the hopper is rotated slower than the rotation of the spreading means, so as to prevent the running balance during spreading by the mobile trolley from being damaged and at the same time prevent pulverization of granular fertilizer.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

[0006] However, even in each fertilizer spreader according to Patent Documents 2 to 5, when a desired fertilizer is selected from chemical fertilizers such as granular fertilizers and powdered fertilizers and organic fertilizers such as compost as the fertilizer to be spread, it is not possible to adapt to the properties of the fertilizer, and it is not possible to sufficiently prevent the bridging phenomenon. In addition, the fertilizer spreaders according to Patent Documents 3 to 5 have a complicated structure and a heavy weight, and there is a problem in compactly arranging them in a limited space.

[0007] Therefore, the present invention has been made in view of the above problems, and can surely supply various fertilizers including high-moisture fertilizers and organic fertilizers in the hopper to the spreading unit while preventing the bridging phenomenon, and also has an agitator capable of mixing a plurality of fertilizers in the hopper, and an object thereof is to provide a fertilizer spreader having a simple configuration. [Means for Solving the Problems]

[0008] In a fertilizer spreader according to the present invention, in which a hopper for storing fertilizer, a spreading unit for spreading the fertilizer stored in the hopper, and the hopper and the spreading unit are mounted on a loading frame of a mobile cart, the hopper includes an agitator for stirring the fertilizer and a first motor for rotationally driving the agitator, the spreading unit includes a spreading plate for spreading the stirred fertilizer, a second motor for rotationally driving the spreading plate, and a spreading unit support for supporting the second motor, In the hopper, the fertilizer agitated by the rotation of the agitator driven by the first motor is dropped from the bottom of the hopper to the side of the spraying unit, and the dropped fertilizer can be sprayed in a desired spraying direction by the rotation of the spraying plate driven by the second motor. The rotation of the agitator is characterized by rotating at a speed different from the rotation of the spraying rotating body.

[0009] Note that the spraying unit support body is provided with a mounting position adjustment slot, and the second motor may be mounted on the spraying unit support body so as to be slidable in the front-rear direction of the carriage.

[0010] Further, the agitator is composed of a shaft rotatably provided by a driving means and an agitating body of a flexible longitudinal member, and the agitating body may be configured to project from the shaft in at least two directions.

[0011] As the agitator for the compost, it is preferable that the agitating body is fixed to the shaft so as to project and bend a plurality of pipes substantially along the inner peripheral wall surface of the hopper to form a plurality of cavities, and the fertilizer is inserted into the plurality of cavities and agitated while the shaft rotates.

[0012] Further, as the agitator for the powdered fertilizer, it is preferable that the agitating body projects radially from the peripheral surface of the shaft and is formed in a plurality of rod shapes, and at least one of the agitating bodies projects so as to be substantially close to the inner peripheral wall surface of the hopper. Note that at least one of the agitating bodies can also form a certain bending portion in the middle.

Advantages of the Invention

[0013] The fertilizer spreader according to the present invention makes it possible to more conveniently spread fertilizer by independently providing a motor for stirring the fertilizer in the hopper and a motor for rotating the spraying unit for spraying the fertilizer stirred in the hopper, and freely changing the fertilizer stirring speed and the spraying rotation speed.

[0014] In addition, since the agitator for stirring can be easily changed according to the properties of the fertilizer, the bridging phenomenon can be surely prevented.

[0015] Furthermore, since the second motor in the spraying unit can be adjusted in position back and forth with respect to the traveling direction, the spraying direction of the fertilizer can be optimally adjusted.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for Carrying Out the Invention

[0017] Hereinafter, embodiments of the present invention will be described in detail. Note that the present invention is not limited to the embodiments shown below. Details will be described below.

Example

[0018] Refer to FIGS. 1 to 3. FIG. 1 is a schematic perspective view of the fertilizer spreader according to the present invention. FIG. 2 is a side view of the fertilizer spreader according to the present invention. FIG. 3 is a view for explaining the positional relationship between the first motor and the second motor of the fertilizer spreader according to the present invention from the front. The fertilizer spreader 100 according to the present invention according to Example 1 generally includes a hopper H for storing fertilizer, a spraying unit 2 for spraying the fertilizer stored in the hopper H, and a configuration in which the hopper H and the spraying unit 2 are mounted on the loading frame of a mobile cart.

[0019] As shown in FIGS. 1 and 2, the hopper H has a stirring unit 1, and includes an agitator 10 for stirring fertilizer and a first motor 13 for rotationally driving the agitator 10. Further, the first motor 13 has a rotation shaft supported at the center of a first motor support 14 bridged to the opening edge of the hopper H toward the bottom of the hopper H, and the agitator 10 is attached to the rotation shaft of the first motor 13. The agitator 10 includes a shaft 11 attached to the first motor 13 and a stirring body 12 fixed to the shaft 11. The hopper H is supported by a hopper support 3. The hopper support 3 includes a handle 30, and an operation unit 31 is provided on the handle 30, and a battery 32 for driving the first motor and a second motor (described later) is provided at a desired location of the hopper support 3.

[0020] The spraying unit 2 includes a spraying plate 21 for spraying the stirred fertilizer, a second motor 23 for rotationally driving the spraying plate 21, and a spraying unit support 22 for supporting the second motor 23. In the hopper H, the fertilizer stirred by the rotation of the agitator 10 driven by the first motor 13 is dropped from the discharge port HE at the bottom of the hopper H to the spraying unit 2 side, and the dropped fertilizer can be sprayed in a desired spraying direction by the rotation of the spraying plate 21 driven by the second motor 23.

[0021] The spraying unit support 22 is provided with a mounting position adjustment slot SL, and the second motor 23 is slidably mounted on the spraying unit support 22 in the front-rear direction of the carriage. Details will be described later.

[0022] As described above, since the motors of the stirring unit and the spraying unit are independent, the agitator 10 can rotate at a speed different from the rotation speed of the spraying plate 21. That is, the first motor 13 is a reduction motor that rotates at a low speed (15 rpm) and serves to prevent the bridging phenomenon of the fertilizer put into the hopper H via the agitator 10. On the other hand, the second motor 23 rotates at a medium speed (variable speed 0 to 700 rpm) and serves to spray the fertilizer by centrifugal force via the rotating spraying plate 21. Note that since the two motors are independent, it is possible to turn on / off the power supply of only the first motor 13 or only the second motor 23. In the case of fertilizer where no bridging phenomenon occurs, power consumption can be suppressed and the working time can be extended by using only the lower motor for spraying.

[0023] Refer to FIG. 3. As described above, the agitator 10 includes a shaft 11 attached to the first motor 13 and an agitating body 12 fixed to the shaft 11. The shaft 11 is attached to the first motor and is rotatably provided, and the agitating body 12 of a flexible longitudinal member is fixed at a desired location on the shaft 11. The agitating body 12 may be configured to project from the shaft 11 in at least two directions. The number of the projecting agitating bodies 12 is not particularly limited. There are mainly two types of agitators, one with a shape optimal for powdered fertilizers and the other with a shape optimal for fertilizers such as compost. That is, in the present invention, the agitator is designed to be changed by lifting the first motor above the hopper H. Therefore, it has a mechanism that can handle a wide range of fertilizers. The shape of the agitator 10 will be exemplified later.

[0024] Refer to FIG. 4. FIG. 4 is a diagram showing an example of the shape of the agitator 10 for compost, where (a) is a perspective view and (b) is a top view. As shown in FIG. 4, the agitating body 12 projects radially from the circumferential surface of the shaft 11 and is formed into a plurality of rod shapes (12a, 12b, 12c, 12d, 12e, 12f, 12g, 12g, 12h), and at least one agitating body preferably projects so as to be substantially close to the inner peripheral wall surface of the hopper. Note that at least one of the agitating bodies 12b can also form a certain bent portion in the middle. In the case of fertilizers such as compost, a considerable load is applied to the agitator 10. Therefore, in FIG. 4, it is advisable to adjust the thickness of the upper two rods 12a and 12b at a distance from the shaft 11 to make a design that does not result in insufficient strength.

[0025] Refer to Fig. 5. Fig. 5 is a diagram showing an example of the shape of the agitator for the powdered fertilizer, where (a) is a perspective view and (b) is a top view. As shown in Fig. 5, the stirring body 16 has dimensions such that it substantially follows the inner peripheral wall surface of the hopper H, and a plurality of pipes protrude and bend to form a plurality of cavities (here, the stirring body 16a on the right side facing the figure has triangular, substantially trapezoidal, and substantially rectangular cavities, and the stirring body 16b on the left side has triangular cavities) and is fixed to the shaft 15. When the shaft 15 rotates, the fertilizer is stirred while passing through these plurality of cavities.

[0026] As an example of the shapes of the stirring bodies 12 and 16 shown in Figs. 4 and 5, they are round bar-shaped, but they may also be square bar-shaped. The round bar shape has a closest distance in a dot shape and is easy to stir. The square bar shape can have variations such as a rectangular cross-section and chamfering to round off the corners. Note that the round bar shape includes those with a substantially semi-circular cross-sectional shape and an elliptical cross-sectional shape. Furthermore, the inclination angle of the stirring body in the length direction of the rotation axis cannot be generally defined by the type of fertilizer and the rotation speed of the rotation axis, but an angle of 30 degrees to 85 degrees is preferable.

[0027] Refer to Fig. 6. Fig. 6 is a diagram schematically explaining the state of adjusting the position of the second motor 23 of the spraying unit 2 of the fertilizer spreader 100 according to the present invention. As described above, the spraying unit support 22 is provided with mounting position adjustment slots SL (two are shown in the figure, but one may also be sufficient), and the second motor 23 is slidably mounted on the spraying unit support 22 in the front-rear direction of the moving carriage. In Fig. 6(a), the fertilizer falls from the fertilizer discharge port HE to the center of the spraying plate 21, and ideally, the fertilizer flies in all directions by 360 degrees. In Fig. 6(b), the fertilizer falls from the fertilizer discharge port HE in front of the spraying plate 21, and the fertilizer flies in the right side direction of the traveling direction. In Fig. 6(c), the fertilizer falls from the fertilizer discharge port HE behind the spraying plate 21, and the fertilizer flies in the left side direction of the traveling direction. That is, an adjustment slot SL is provided in the mounting portion of the second motor 23 so as to enable optimal spraying according to the fertilizer spraying location. By moving the second motor 23 back and forth, the dropping position of the fertilizer from the fertilizer discharge port HE can be changed, and it can be adjusted to an optimal spraying range.

[0028] Note that it is preferable to change the rotation speed of the second motor 23 in the range of 0 to 100% so that the spraying width of the fertilizer can be adjusted. Further, the first motor 13 may be operated only for power on / off in the case of fertilizers that cause bridging phenomena.

[0029] As described above, the preferred embodiments in the configuration example of the fertilizer spreader according to the present invention have been illustrated and described. However, it will be understood that various changes can be made without departing from the technical scope of the present invention.

Industrial Applicability

[0030] The fertilizer spreader according to the present invention can surely supply various fertilizers including powder fertilizers, high-moisture fertilizers, organic fertilizers, etc. in the hopper to the spraying section while preventing bridging phenomena, and also has an agitator capable of mixing a plurality of fertilizers in the hopper. Since the configuration is simple, it is easy to use and can be widely used regardless of scale, such as individual farmers and large-scale agricultural corporations.

Explanation of Reference Numerals

[0031] 100 Fertilizer spreader H Hopper 1 Stirring section 10 Agitator 11, 15 Shaft 12, 16 Stirring body 13 First motor 14 First motor support 2 Spraying section 21 Spraying plate 22 Spraying section support 23 Second motor 3 Hopper support 30 Handle 31 Operation section 32 Battery Slot for adjusting the mounting position of SL HE Fertilizer discharge port ST Shutter plate STL Shutter lever

Claims

1. In a fertilizer spreader having a hopper for storing fertilizer, a spreading unit for spreading the fertilizer stored in the hopper, and the hopper and the spreading unit mounted on a loading frame of a mobile cart, the hopper includes an agitator for stirring the fertilizer and a first motor for rotationally driving the agitator, the spreading unit includes a spreading plate for spreading the agitated fertilizer, a second motor for rotationally driving the spreading plate, and a spreading unit support for supporting the second motor, in the hopper, the fertilizer agitated by the rotation of the agitator driven by the first motor is dropped from the bottom of the hopper toward the spreading unit side, and the dropped fertilizer can be spread in a desired spreading direction by the rotation of the spreading plate driven by the second motor, A fertilizer spreader, characterized in that the agitator rotates at a speed different from the rotation speed of the spreading rotor.

2. The fertilizer spreading device according to claim 1, wherein the spreading unit support has a mounting position adjustment slot, and the second motor is slidably mounted on the spreading unit support in the front-rear direction of the mobile cart.

3. The fertilizer spreader according to claim 1, wherein the agitator is composed of a shaft rotatably provided by driving means and a flexible longitudinal member, and the longitudinal member protrudes from the shaft in at least two directions.

4. The fertilizer spreader according to claim 2, wherein the agitator is composed of a shaft rotatably provided by driving means and an agitator body of a flexible longitudinal member, and the agitator body protrudes from the shaft in at least two directions.

5. The agitator is composed of a shaft rotatably provided by driving means and an agitator body of a flexible longitudinal member, the agitator body is fixed to the shaft so as to project and bend a plurality of pipes substantially along the inner peripheral wall surface of the hopper to form a plurality of cavities, and the fertilizer is inserted into the plurality of cavities and agitated while the shaft rotates. The fertilizer spreader according to claim 4, characterized in that

6. The agitator is composed of a shaft rotatably provided by driving means and an agitator body of a flexible longitudinal member, The stirring body projects radially from the circumferential surface of the shaft and is formed in a plurality of rod shapes, and at least one of the stirring bodies projects so as to be substantially close to the inner peripheral wall surface of the hopper. The fertilizer spreader according to claim 4, characterized in that.

7. At least one of the stirring bodies is characterized in that a certain bent portion is formed in the middle. The fertilizer spreader according to claim 5, characterized in that.

8. At least one of the stirring bodies is characterized in that a certain bent portion is formed in the middle. The fertilizer spreader according to claim 6, characterized in that.

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