JPH0445460Y2 - - Google Patents

Description

[Detailed description of the invention] <Purpose of the invention><Industrial application field> The present invention relates to a fertilization device for tea plantations and other agricultural and horticultural purposes, and in particular has the function of dispersing fertilizer and applying it to cultivated soil. This relates to a self-propelled fertilizer application device that is also equipped with.

<Prior art and its problems> Various self-propelled fertilizer applicators for agriculture and horticulture have been proposed. Some devices are equipped with a means of fertilizing by stirring the fertilizer into the soil, but the latter, which is equipped with a tilling blade, has not been put into practical use because the device is unstable during actual work. There are hardly any. For example, as a prior art of this kind, Utility Model Application No. 57-11921, ``Fertilizer for Tea Gardens,'' has been proposed, but this device consists of a prime mover as a driving source and a hopper driven by the prime mover for agitation and dispersion. The mechanism and the arrangement relationship with the drive wheels are not always organically organized. For example, if there is a stone in the soil when digging up the soil with the tiller blade, the tiller blade that hits it will turn the other way. The entire machine begins to be pushed up, and this unstable state impairs the stability of the hopper, which is far away from the worker.Furthermore, due to the distance from the worker, the worker has to balance the broken balance. The problem also arises that it cannot be easily corrected, and at present no device has been put into practical use in this type of tea garden management machine that performs both the spreading of fertilizer and the digging up of the tilled soil using a tiller blade at the same time. For this reason, in the past, when managing fertilization in tea gardens, etc., separate machines were required, one for fertilizer spreading and the other for shallow cultivation, which mainly worked for stirring, and the cost and effort required to purchase and maintain these machines was high.

<Technical problem that was attempted to be solved> The present invention has been developed in view of the current situation, and it is possible to solve the problem by further improving the prior art that the applicant has already developed. This is an attempt to propose a device that can perform the tilling work of tilled soil all at once. In other words, Utility Application No. 133443/1983, ``Self-Propelled Fertilizer Spreading Device,'' which is the prior art developed by the present applicant, organically arranges the structure of the drive system from the prime mover to the drive wheel and the spreading blades of the fertilizer spreading device. The present invention actively evaluates this fact and proposes an improved device that can also perform inter-tillage fertilization. It is.

《Structure of the invention》 〈Means for achieving the purpose〉 That is, the self-propelled fertilizer application device of the present invention has a frame including a hopper that stores fertilizer and discharges the fertilizer from below, at least one drive wheel, and a prime mover. In a device that is integrally assembled by members and that spreads fertilizer in the hopper by driving a drive wheel and stirring blades and spreading blades below the hopper with the prime mover, a drive from the prime mover to the drive wheel. The system and the drive system from the prime mover to the stirring blades and the spreading blades are all sealed by a cover, and furthermore, a tilling blade to which power is transmitted from a part of the drive system is provided behind the fertilizer spreading position. This feature is intended to achieve the above-mentioned purpose.

<Example> The present invention will be specifically described below based on the illustrated example. Reference numeral 1 denotes a self-propelled fertilizer application device according to the present invention, which consists of a hopper 3 that stores fertilizer by a frame member including a subframe 2, and, for example, one front wheel 4a and two rear driving wheels 4b. The wheels 4, a drive unit 6 including a prime mover 5 using a two-stroke engine as an example of a drive source thereof, and a tilling device 7 are integrally combined. First, the subframe 2 will be explained. This is constructed by combining steel pipes into an appropriate shape as an example, and the underframe 1 is arranged almost horizontally below.
0 and this under frame 10
A hopper frame 11 is formed as a frame body extending upward so as to rise upward from approximately the center of the frame.
Handles 12 are attached to the left and right sides of the hopper frame 11 at the upper rear thereof, and a bracket 14 for supporting the front wheel 4a is provided at the lower front of the under frame 10. In this embodiment, the bracket 14 is fixedly attached to the subframe 2, but it may be configured to be rotatable so that the front wheels 4a can be steered, or to ensure straight-line performance and turning performance. There is no problem with it being a so-called Castafu 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. A shutter 18 is provided on the lower surface of the discharge port 17, as shown in an enlarged view in FIG. The movement of the shutter operating lever 20 is appropriately applied to the shutter 18 via the conduit cable, and by grasping the shutter operating lever 20, the discharge port 17 is brought into an open state. Incidentally, reference numeral 21 is an adjustment plate for adjusting the opening area of the discharge port 17. Further, stirring blades 22 are 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 from below and discharge it. Further, a stirring blade 22 is placed across the discharge port 17.
A dispersing blade 23 is provided on the opposite side, that is, on the outside of the hopper 3. These stirring blades 22 and dispersing blades 23 are rotationally driven by a stirring main shaft 31 provided on the drive unit 6 side, as will be described later. Next, the drive unit 6 including the prime mover 5 will be explained. First, reference numeral 25 denotes a casing that covers the drive system, and is made of cast iron or aluminum alloy, for example, and has sufficient rigidity so that it can act as a part of the frame member by itself. It supports the prime mover 5 and also supports the rear drive wheels 4b at the bottom. First, the prime mover 5 has 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 a manually operated clutch or a directly connected coupling may be used as appropriate. The output of the motor 5 is guided through the centrifugal clutch 27 to a drive system provided within the casing 25, which will be explained below. First, the output shaft 28 of the centrifugal clutch 27 is extended vertically downward and transmits rotation to the countershaft 29 via the spur gear 29a inside the casing 25. This countershaft 29 acts as a so-called distribution shaft, and above it a spur gear 29 is connected.
The rotation is transmitted to the relay reduction gear group 30 via a. The relay reduction gear group 30 is configured by, for example, two idle shafts with multi-stage reduction gears, and reduces the rotation to an appropriately desired reduction ratio. The rotation of the relay reduction gear group 30 is finally controlled by a spur gear 31 provided on the stirring main shaft 31.
The signal is transmitted to a and rotates it. As described above, the stirring main shaft 31 is fitted inside the stirring blade 22 and the dispersing blade 23 facing below the hopper 3 to rotate them. On the other hand, a worm 29b is attached below the countershaft 29, and this worm 29b meshes with a pinion wheel 33 loosely fitted to the axle shaft 32 of the drive wheel 4b to transmit rotation. In this embodiment, the pinion wheel 33 is constructed to be able to freely rotate with respect to the axle shaft 32, and for this purpose a clutch mechanism is interposed between the pinion wheel 33 and the axle shaft 32. That is, reference numeral 34 is a clutch wheel, which is fixed to the axle shaft 32 in the rotational direction by spline fitting 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. Make it. This clutch is connected to the fork-shaped release lever 36 by the clutch wheel 3 so that it can be engaged and disengaged by manual operation.
4 and by operating this release lever 36 with an external shift lever 37, the clutch can be engaged and disconnected. 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 complete unit. That is, to explain this assembled state, first, the under frame 10 of the sub frame 2
A mount bracket 38 is provided in the mount bracket 38, and by aligning the assembly bracket 39 of the casing 25 with the mount bracket 38 and tightening the space between them with appropriate bolts and nuts 40, the subframe 2 and the drive unit 6 can be assembled. Assemble them together. Of course, it may be fixed at an appropriate location other than this location, such as between the rear vertical member of the subframe 2 and the prime mover 5. Further, in such an apparatus, a tilling device 7 is provided as a characteristic feature of the present invention. This tilling device 7 is provided approximately immediately in front of the driving wheel 4b, that is, approximately behind the position where the fertilizer from the hopper 3 is spread, and has the following configuration. First, power is transmitted to the tilling device 7 by taking out rotation from the stirring main shaft 31 of the drive system, as an example. That is, a bevel gear 42 is provided below the stirring main shaft 31, thereby transmitting rotation to a crankshaft 43 provided symmetrically in the left and right directions. A crank arm 44 is provided on the outside of the casing 25 of the crankshaft 43, and one end of a holder 46 of a tilling blade 45 is connected to the working end of the crank arm 44 via a crank pin 47. The holder 46 is connected at the other end to a regulating link 48 via a joint pin 49, and the regulating link 48 rotatably fixes the other end to the subframe 2 side. Further, in this device, a guide cover 51 is provided to cover the sides of the spreading blades 23, and the guide cover 51 further includes a shoot plate 52 for guiding the scattering fertilizer. Further, a drive wheel cover 53 is provided on the drive wheel 4b.

The self-propelled fertilization device 1 according to the present invention has the above-described specific structure, and the fertilization work can be carried out as follows. First, start the prime mover 5 according to the usual method, drive it to a predetermined position, and when the area to be fertilized is reached, the handle 1
The shutter 18 is moved by grasping the shutter operation lever 20 provided at 2, and the discharge port 17 is opened so that the fertilizer can fall from there. In this way, the fallen fertilizer is caught by the spreading blades 23 and centrifugally thrown around. This thrown fertilizer is covered by the guide cover 51 on its side.
At the same time, it is guided to the shoot plate 52, and is sequentially spread on the cultivated soil directly under the front end of the shoot plate 52. On the other hand, the crankshaft 43, whose rotation is subsequently transmitted from the stirring main shaft 31, rotates the crank arm 44 by its rotation, operates the floating holder 46 to draw a flat elliptical orbit, and the tilling blade 45 It works by digging up the cultivated soil. When the situation arises, the soil that is being dug up as it moves forward will contain the fertilizer that was previously spread, so it will move forward by stirring this into the soil. In this embodiment, the various members from the prime mover 5 to each drive system are formed extremely compactly, and the hopper 3 is provided adjacent to it, so the center of gravity of the device is concentrated and the tilling blade 45 is effectively Since the load is applied to the tiller, the work of digging up the tilled soil with the tiller blade can be done extremely smoothly.

The present invention has the configuration as described above, and although the most preferable configuration has been illustrated in this embodiment, the present invention is not necessarily limited to this. For example, although an internal combustion engine is used as the prime mover, it may be an electric type using a battery or the like as an energy source. In addition, although the wheels are one in the front and two in the rear, a unicycle type, a two-wheeled type with front and rear wheels, a pair of left and right wheels, or any other suitable type can be selected.

《Effects of the invention》 The present invention has the above-mentioned configuration, and is a new fertilizer application device that is equipped with a tilling device and can not only spread fertilizer but also mix it into cultivated soil at the same time. This is what I was able to obtain. In addition, since the drive system that transmits power from the prime mover is completely sealed, the fertilizer spread during fertilizer application does not adhere to various parts of the drive system.
There is no risk of damaging these members, and excellent durability can be exhibited. Furthermore, in sealing the drive system that transmits power from the prime mover as stipulated in paragraph 2 of the utility model registration claim,
When this is constructed with a strong casing, it can also be used as a so-called frame member that can be directly connected to the subframe 2, and in this respect, a more compact structure with a reduced number of parts can be achieved. .

[Brief explanation of the drawing]

Figure 1 is a partially cutaway perspective view of the self-propelled fertilizer application device of the present invention, Figure 2 is an exploded perspective view of the same, Figure 3 is a side view of the same, Figure 4 is a front view, and Figure 5 shows the drive unit. FIG. 6 is an exploded perspective view showing members below the hopper. 1...Self-propelled fertilizer application device, 2...Subframe,
3...Hotsupa, 4...Wheel, 5...Motor, 6...
... Drive unit, 7... Cultivating device, 10... Under frame, 11... Hopper frame, 12...
...Handle, 14...Bracket, 16...Inlet, 17...Outlet, 18...Shutter, 19...
... Shutter spring, 20 ... Shutter operation lever, 21 ... Adjustment plate, 22 ... Stirring blade, 23
...Scatter blade, 25...Casing, 26...Fuel tank, 27...Centrifugal clutch, 28...Output shaft, 29...Countershaft, 29a...Spur gear, 29b...Worm, 30...Relay reduction Gear group, 31... Stirring main shaft, 31a... Spur gear, 32
... Axle shaft, 33 ... Pinion wheel, 34 ... Clutch wheel, 35 ... Clutch spring, 36 ... Release lever, 37 ...
...Shift lever, 38...Mount bracket,
39... Assembly bracket, 40... Bolt/nut, 42... Bevel gear, 43... Crankshaft, 44... Crank arm, 45... Cultivating blade, 46... Holder, 47... Crank pin, 4
8...Restriction link, 49...Joint pin, 5
1... Guide cover, 52... Shoot plate, 53... Drive wheel cover.

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 driving wheel and a stirring blade and a spreading blade below the hopper by the prime mover, including a drive system from the prime mover to the driving wheel, and a drive system from the prime mover to the stirring blade and the spreading blade. A self-propelled fertilizer application device characterized in that a drive system leading to the drive system is completely sealed by a cover, and further includes a tilling blade behind a fertilizer spreading position to which power is transmitted from a part of the drive system. (2) Claim 1 of the 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 application equipment.