JPH0135131Y2 - - Google Patents

Description

[Detailed description of the invention] <Purpose of the invention><Industrial application field> The present invention relates to a fertilizer spreading device for agriculture and horticulture, and particularly to a device for adjusting the fertilizer spreading state.

<Background of the invention> Self-propelled fertilizer spreading devices are widely used, and this device drops fertilizer from a hopper attached to the machine body through an opening at the bottom, and uses spreading blades that rotate below the hopper to drop the fertilizer. It is centrifugally released into the surrounding area by By the way, in this type of fertilizer spreading work, it is necessary to adopt a spreading method depending on the situation, such as when spreading fertilizer over a wide area and when spreading fertilizer concentratedly near the roots of crops. For this reason, an adjustment plate has traditionally been attached to the machine frame, etc. around the spreading blade to block the direction of fertilizer spreading, and when spraying in a relatively narrow area, this adjustment plate is used to ensure that the fertilizer is distributed at a constant rate. The fertilizer is guided so that it is concentrated in a certain area, and when spreading over a wide area, the adjusting plate is moved away so that the fertilizer thrown by the spreading blades is spread widely without being obstructed. Conventionally, specific methods for this purpose include simply attaching a thin metal plate to the frame around the spraying blades so that it can rotate freely, and installing a mechanism that allows so-called positioning and stopping at the rotation fulcrum, or installing rotation resistance at the rotation fulcrum. A technique used was to increase the size of the adjustment plate, select a desired position, and hold the adjustment plate at that position.

For this reason, conventionally, the vibrations of the engine installed in this type of fertilizer spreading device are transmitted to the metal adjustment plate, which resonates and generates noise, and the adjustment plate is susceptible to damage due to the vibration. It had the following drawback.

<Technical problem that was attempted to be solved> Here, the present invention is a novel device that absorbs most of the transmission of vibrations, etc., eliminates the generation of vibration noise, etc., and does not require any special mechanism to be attached to the rotation fulcrum. This is an attempt to provide a device for adjusting the spraying condition.

<<Structure of the invention>><Means for achieving the purpose> In other words, the spreading condition adjusting device in the fertilizer spreading device of the present invention has an apron that is rotatably attached to the machine frame around the fertilizer spreading part and regulates the spreading condition of the fertilizer. In the main device, the apron is made of a flexible sheet material having self-supporting properties, and the pivot point of the apron is formed so that the center of rotation thereof is shifted, The aim is to achieve the above objectives.

<Example> The present invention will be specifically described below based on the illustrated example. Reference numeral 1 is a fertilizer spreading device to which the present invention is applied, and this device has a novel mechanism developed by the applicant. That is, in this case, a hopper 3 for storing fertilizer A, a handle 4, and a front wheel 5 are supported on a subframe 2, and a prime mover 6, a pair of left and right drive wheels 7, and a prime mover 6 are separately supported. A drive unit 9 is constituted by integrally comprising a transmission mechanism extending from the drive wheel 7 to the front stirring shaft 8, and these are assembled together with bolts, nuts, etc. Of course, the application of the present invention is not limited to the fertilizer spreading device shown in this embodiment, but it goes without saying that it can be applied to various conventionally known fertilizer spreading devices. Next, the dispersion condition adjusting device according to the present invention will be described. First, this device is installed in the fertilizer dispersion section 10 of the fertilizer dispersion device 1, and this fertilizer dispersion section 10 essentially refers to the fertilizer inside the hopper 3. It collectively defines the position below the hopper, including the part from which A is thrown and the members involved in the throwing. To explain the structure of this fertilizer spreading section 10, as shown in an enlarged view in FIG. 4, a stirring shaft 8 of a drive unit 9 is fitted into the bottom of the hopper 3, and a stirring blade 11 is rotationally driven by this. A discharge port 12 is opened in the bottom of the hopper 3 in a substantially fan shape, and further below the discharge port 12, a dispersing blade 13 is rotatably driven sharing the stirring shaft 8. It is attached to the state. Incidentally, the discharge port 12 is provided with a discharge adjustment plate 14 so as to be in contact with the lower surface thereof, so that the discharge port 12
In addition to adjusting the opening area of the discharge adjustment plate 14, a shutter 15 that slides back and forth is attached below the discharge adjustment plate 14. Furthermore, a discharge adjusting plate 14 and a shutter 15 are arranged around these discharge ports 12.
etc. are already known, and other known mechanisms may also be used. In this embodiment, in this embodiment, the fertilizer thrown from the fertilizer spreading part 10 is mainly thrown to the side of the fertilizer spreading device 1, and this part mainly has an apron 16 as described below. A dispersion condition adjustment device is provided. That is, this apron 16 is made of a material that is itself flexible, such as a material made of wire cloth, synthetic fiber cloth, etc. as a core material and synthetic rubber or the like laminated thereon, or a material made of a flexible plastic sheet or the like. As such, it has some degree of autonomy. This apron 16 as a whole has a substantially band-like shape, and in this embodiment, an apron support frame 17 in the subframe 2 is used as a machine frame for mounting, and a mounting bracket 18 having an annular portion is provided in this part. Fitted on the outside and mounting bracket 18
The end edge of the apron 16 is held in place by the tongue at the tip of the apron. This mounting bracket 18 serves as a rotational fulcrum, but the point is that the apron 16 only needs to be rotatably attached to the apron support frame 17, which is the machine frame, and the mechanism is limited to this type. It is not something that will be done. As a characteristic feature of the present invention, the rotational fulcrums formed by the mounting brackets 18 all align their rotational centers in the longitudinal direction of the apron support frame 17, but the rotational fulcrums formed by the mounting brackets 18 coincide with each other in the longitudinal direction of the apron support frame 17. The center of rotation of the pivot point is offset by approximately 90 degrees.
As a result of this configuration, the apron 16 first has its free end hanging downward, and the apron 1
By utilizing the flexibility of 6, it maintains its self-supporting state when it is rolled up upwards.

The present invention has such a specific configuration, and the adjustment of the spraying state of fertilizer A is performed as follows. That is, when spreading the fertilizer A in a relatively narrow area as shown in FIG. In such a case, the fertilizer A that is centrifugally thrown away by the action of the spreading blades 13 in the fertilizer spreading section 10 comes into contact with the inside of the apron 16 when it comes out of the fertilizer spreading section 10, and is guided by this to the fertilizer spreading device 1. It is concentrated in the lower part of the lateral area. When spreading fertilizer A over a wide area, the apron 16 is rolled up as shown in FIG. This is what we do.
In this case, the fertilizer A thrown from the fertilizer spreading part 10 is not blocked in any way near the fertilizer spreading part 10, so that it is spread over a very wide area.

In this embodiment, the mounting bracket 18, which is the rotational fulcrum of the apron 16, is attached to the apron support frame 17 that has been turned around by approximately 90 degrees, thereby shifting the rotational center. Even if the apron 16 is moved in parallel so that the rotational fulcrum is slightly shifted vertically or horizontally, it is possible to set the apron 16 in a hanging state and a raised state.

<<Effects of the invention>> The present invention has the structure and function described above, and the apron for adjusting the fertilizer dispersion condition is made of a flexible material. It is almost unaffected by the vibrations of the prime mover installed in the spraying equipment, eliminates the generation of resonance noise caused by vibration, and completely prevents the occurrence of damage caused by this resonance. It is something. Furthermore, when this apron 16 is attached to the machine frame side, its pivot point is partially shifted so that it can maintain its hanging state and raised state independently. , both positions can be set without attaching any special mechanism to the rotation fulcrum.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing a fertilizer spreading device to which the present invention is applied, Fig. 2 is a side view of the same, Fig. 3 is an enlarged perspective view showing the apron portion which is the main component of the present invention, and Fig. 4 is an exploded perspective view showing the fertilizer spreading device to which the present invention is applied. FIG. 5 is an exploded perspective view of the fertilizer spreading section, and is an explanatory diagram showing the operating state in the adjusted state. 1; Fertilizer spreading device, 2; Subframe, 3; Hopper, 8; Stirring shaft, 9; Drive wheel, 10; Fertilizer spreading section, 11; Stirring blade, 12; Discharge port, 13; Spreading blade, 14; Discharge adjustment Board, 15; Shyatsuta, 1
6; Apron, 17; Apron support frame, 1
8; Mounting bracket constituting the rotation fulcrum, A: Fertilizer.

Claims (1)

[Scope of utility model registration request] In a device mainly consisting of an apron that is rotatably attached to a machine frame around a fertilizer spreading part and regulates the state of fertilizer spreading, the apron is composed of a flexible sheet material that is self-supporting, and A spreading condition adjusting device for a fertilizer spreading device, characterized in that the center of rotation of the rotating fulcrum is formed to be shifted.