JPH0135132Y2 - - Google Patents

Description

[Detailed description of the invention] <<Purpose of the invention>><Field of industrial application> The present invention relates to a self-propelled fertilizer spreading device for agriculture and horticulture.

<Prior Art and Problems> Various self-propelled fertilizer spreading devices for agriculture and horticulture have been used in the past. In these systems, a hopper for storing fertilizer, wheels, and a prime mover are attached to a frame generally made of steel pipes, and the power from the prime mover is transmitted to the wheels and hopper via a chain, belt, speed reducer, or other common power transmission device. This is transmitted to the facing stirring blades and spreading blades.

For this reason, in many cases, the belts, chains, etc. that transmit the power from the engine are not completely sealed, and the fertilizer sprayed onto these areas can cause significant damage, which is a drawback. Further, no special technical innovation has been made to organically arrange a drive system for transmitting power, and the device has not been made sufficiently compact.

<Technical problem to be solved> The present invention was developed in view of these conventional drawbacks, and it organically arranges the drive system from the prime mover to the drive wheels, stirring blades, and spraying blades, and By sealing these, we attempted to develop a new self-propelled fertilizer spreading device that is compact and highly durable.

<<Structure of the invention>><Means for achieving the purpose> In other words, the self-propelled fertilizer spreading device of the present invention includes a hopper for storing fertilizer and discharging the fertilizer from below, at least one drive wheel, and a prime mover. In the device which is integrally assembled by a frame member and which uses the prime mover to drive a driving wheel and stirring blades and spreading blades provided on the inside and outside of the lower part of the hopper to spread the fertilizer in the hopper, The drive system from the prime mover to the drive wheels and the drive system from the prime mover to the stirring blades and the dispersing blades are all sealed with a cover, thereby achieving the above object. It is something.

<Example> The present invention will be specifically described below based on the illustrated example. Reference numeral 1 denotes a self-propelled fertilizer spreading device according to the present invention, which includes a hopper 3 for storing fertilizer by a frame member including a subframe 2, and, for example, one front wheel 4a and two rear drive wheels 4b. The drive unit 6 includes wheels 4 consisting of wheels 4 and a drive unit 6 including a prime mover 5 to which a two-cycle engine is applied as an example of a drive source. First, to explain the sub-frame 2, this is constructed by combining steel pipes into an appropriate shape. First, a horizontal frame 10 having a substantially rectangular shape is provided below, and approximately at the center of this horizontal frame 10. A hopper frame 11 is formed as a frame body expanding upward so as to rise upward from the top. A handle 12 is attached to the left and right sides of the hopper frame 11 at the rear upper part thereof, and an engine stay 13 is formed to project almost horizontally from the hopper frame 11 below the handle 12. On the other hand, a fork 14 is provided at the lower front of the horizontal frame 10 to support the front wheel 4a. In this embodiment, the fork 14 is fixedly attached to the subframe 2, but it may be configured to be rotatable so that the front wheels can be steered, or to ensure straight-line performance and turning performance. There is no problem with the so-called caster oak.
Next, the hopper 3 attached to the hopper frame 11 of this subframe 2 by being fitted inside will be explained. This device has a top-opening shape, and has a fertilizer input port 16 at the top and a fan-shaped discharge port 17 below, for example. As shown in an enlarged view in FIG. 6, a shutter 18 is provided on the lower surface of the discharge port 17 according to a conventional method.
The discharge port 17 is configured to maintain a closed tendency at all times by operating the shutter operating lever 20 and act on the shutter 18 via the conduit cable as appropriate, and by grasping the shutter operating lever 20, the discharge port 17 is opened. It is to make it happen. Incidentally, reference numeral 21 is an adjustment plate for adjusting the opening area of the discharge port 17. Further, a stirring blade 22 is provided inside the bottom of the hopper 3, that is, directly above the discharge port 17, and this makes it easier to stir the fertilizer stored in the hopper 3 from below and discharge it. It is. Furthermore, a dispersing blade 23 is provided on the opposite side of the stirring blade 22 across the discharge port 17, that is, on the outside of the bottom of the hopper 3. These stirring blades 22 and dispersing blades 23 are connected to a stirring shaft 31 provided on the drive unit 6 side, as described later.
It is driven to rotate by. Next, the drive unit 6 including the prime mover 5 will be explained. First, reference numeral 25 is a casing that covers the drive system, and is made of, for example, cast iron or aluminum alloy, and has sufficient rigidity so that it can function as a part of the frame member by itself. The upper part supports the prime mover 5, and the lower part supports the rear drive wheels 4b. First, the prime mover 5 is integrally provided with a fuel tank 26 above it, and the output shaft of the prime mover 5 is connected to a centrifugal clutch 27 housed above the casing 25. Of course, the present invention is not limited to the use of the centrifugal clutch 27 as a coupling from the prime mover 5 as in this embodiment, and it is of course possible to apply a manually operated clutch or a directly connected coupling as appropriate. In this way, the output of the prime mover 5 is guided to the centrifugal clutch in the casing 25, and the drive system from the centrifugal clutch 27 will be described below. First, the output shaft 28 of the centrifugal clutch 27 is extended vertically downward, and the casing 2
Rotation is transmitted to the countershaft 29 via a spur gear inside the countershaft 5. This countershaft 29 acts as a so-called distribution shaft, and transmits its rotation to a relay reduction gear group 30 via a spur gear 29a above it. The relay reduction gear group 30 is configured by, for example, two idle shafts with multi-stage reduction gears assembled, and is used to reduce the rotation to an appropriately desired reduction ratio. The rotation of the relay reduction gear group 30 is finally transmitted to the spur gear provided on the stirring shaft 31, which rotates. As described above, this stirring shaft 31 is fitted inside the stirring blade 22 and the dispersing blade 23 facing below the hopper 3, and rotates them. On the other hand, a worm 29b is attached below the countershaft 29, and this worm 29b is attached to the drive wheel 4.
It meshes with a pinion wheel 33 that is loosely fitted to the axle shaft 32 of b. In this embodiment, the pinion wheel 33 is configured to be able to freely rotate with respect to the axle shaft 32, and for this reason, the pinion wheel 33
A clutch mechanism is interposed between 3 and the axle shaft 32. That is, the reference numeral 34 is a clutch wheel, which is fixed to the axle shaft 32 in the rotational direction by spline engagement or the like, and is attached so as to be slidable in the axial direction of the axle shaft 32. .
A clutch spring 35 is interposed between the casing 25 and the clutch wheel 34, and the clutch spring 35 normally presses the clutch wheel 34 against the pinion wheel 33 side, so that the two rotate integrally. It is meant to be. This clutch has a fork-shaped release lever 36 engaged with the clutch wheel 34 so that it can be disconnected and engaged by manual operation.
Furthermore, by operating this release lever 36 with an external shift lever 37, the clutch can be engaged and disengaged. Drive wheels 4b are attached to both left and right sides of this axle shaft 32. In this embodiment, such a drive unit 6 has sufficient rigidity by itself, and the casing 25 and subframe 2 of the drive unit 6 are assembled into a completed state. That is, to explain this assembled state, first, mount brackets 38 are formed protruding from the horizontal frame 10 of the sub-frame 2 on both left and right sides and at the central part near the front, and the casing 25 is attached to the mount brackets 38. The sub-frame 2 and the drive unit 6 are assembled into one by aligning the assembly brackets 39 and tightening bolts and nuts 40 as appropriate. Furthermore, above it, the engine stay 13 of the subframe 2 mentioned above is fixed near the crankcase of the prime mover 5, so that the engine stay 13 is also fixed at that part. Furthermore, in order to make the operation of the apparatus more functional, an apron 41 for adjusting the spraying state is attached above the horizontal frame 10 in this embodiment. This is attached at some pivot point 43 to the apron support frame 42, which is formed above the horizontal frame 10 and almost parallel to the horizontal frame 10. Consists of sheets. Incidentally, this rotation fulcrum 43 is constructed so that a portion of the rotation center does not coincide with the center of rotation, so that the apron can maintain a state in which its leading edge is directed downward and a state in which it is turned up. It is composed of

In order to perform fertilizer spreading work with such a device, first, apply enough fertilizer into the hopper 3 according to the usual method, then start the prime mover 5 and drive it to a predetermined position to reach the place where the fertilizer is to be spread. When the shutter is reached, the shutter operating lever 20 on the handle 12
, move the shutter 18, open the discharge port 17, and allow the fertilizer to fall from there. At this time, the rotating spray blade 23
The fertilizer is dispersed by centrifuging the falling fertilizer into the surrounding area.

The present invention has the configuration described above, and in this embodiment, the most preferable one is given as an example, but the self-propelled fertilizer spreading device of the present invention is not limited to this embodiment. Needless to say. For example, although an internal combustion engine is used as an example of the prime mover in this embodiment, it may be an electric type using a battery or the like as an energy source. The wheels 4 also have one wheel in the front and two wheels in the rear, but a unicycle type, a two-wheeled type with front and rear or left and right pairs, or any other suitable type can be selected. Furthermore, in this embodiment, the discharge port 17 of the hopper 3
The casing 25 has a shape that is extended further downward, and the casing 25 is shaped so that it enters the hopper 3, and the stirring blade 22 located above the discharge port 17, that is, directly above the discharge port, for example. Of course, it may be formed above the . The drive system inside the casing 25 is constructed using a combination of spur gears from the prime mover 5 to the stirring blades 22 and the dispersing blades 23, but other suitable transmission mechanisms such as bevel gears and drive shafts are also used. Of course, there is no problem in adopting it. The point is that any known power transmission mechanism can be applied to these drive systems as appropriate.

《Effects of the invention》 The present invention has the above-mentioned configuration.Firstly, since the drive system that transmits power from the prime mover is all sealed, the fertilizer spread during fertilizer application is not transmitted to the drive system. Since it does not adhere to various members, it does not damage these members at all and can exhibit excellent durability. Furthermore, when the drive system for transmitting power from the prime mover is sealed as defined in the second claim of the utility model registration, when this is constructed with a strong casing 25, this can be directly connected to the subframe 2. It can also be used as a so-called frame member, and in this respect it is possible to have a more compact configuration with a reduced number of parts.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of the self-propelled fertilizer spreading device of the present invention, Fig. 2 is a side view of the same, Fig. 3 is a front view of the same, Fig. 4 is a longitudinal side view showing the drive unit, and Fig. 5 This figure is a horizontal sectional view of the same as above, and FIG. 6 is an exploded perspective view showing the members below the hopper. 1; Self-propelled fertilizer spreading device, 2; Subframe,
3; Hopper, 4; Wheel, 4a; Front wheel, 4b; Drive wheel, 5; Prime mover, 6; Drive unit, 10; Horizontal frame, 12; Handle, 22; Stirring blade, 2
3; Spreading vane, 25; Casing, 27; Centrifugal clutch, 28; Output shaft, 29; Counter shaft, 29a; Spur gear, 29b; Worm, 30;
Relay reduction gear group, 31; Stirring shaft, 32; Axle shaft, 33; Pinion wheel, 38; Mount bracket, 39; Assembly bracket, 4
0; Boruto Natsuto.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A hopper that stores fertilizer and discharges the fertilizer from below, at least one drive wheel, and a prime mover are integrally combined by a frame member, A device that spreads fertilizer in the hopper by driving a drive wheel and stirring blades and spreading blades provided on the inside and outside of the lower part of the hopper by the prime mover, comprising a drive system from the prime mover to the drive wheel, and a drive system from the prime mover to the drive wheel. A self-propelled fertilizer spreading device characterized in that the drive system leading to the stirring blade and the spreading blade is all sealed with a cover. (2) Claim 1 of the above-mentioned utility model registration claim, characterized in that the cover covering the drive system is constituted by a casing having sufficient rigidity, and is a part of a frame member. Self-propelled fertilizer spreading equipment.