JP2003180117A - Portable farm work machine using bush cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a portable farm work machine for simple plowing work and snow removal work by removing a rotary blade of a bush cutter and attaching a work machine having a simple structure and provided with a speed reducing means. <P>SOLUTION: The portable farm work machine is connected to a 1st driving shaft of a bush cutter having a driving engine at the rear end of an operation rod, the 1st driving shaft driven by the driving engine and attached to the tip end of the operation rod and an operation handle and a shoulder belt attached to a proper middle part of the operation rod. A 2nd driving shaft connected to the 1st driving shaft is vertically placed through a driving connection means above the body of the work machine containing a staggered shaft speed reducing means. A work shaft driven with the 2nd driving shaft at reduced speed is laterally or longitudinally protruded from the body of the work machine and a rotary work means is attached to the work shaft. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention removes a rotary blade for cutting grass of a general-purpose brush cutter and attaches a working machine having a simple structure having a speed reducing means to cultivate a field or remove snow. The present invention relates to a portable work machine utilizing a brush cutter that can be easily used.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 6, for example, a small drive engine 11 with a fuel tank is provided at the rear part of an operating rod 10, and a drive shaft 12 having the small drive engine as a drive source is provided at the tip part. Is provided with a rotary blade 1 on this drive shaft.
5 is attached and the bush cutter used is widely marketed. Such a brush cutter is manufactured to be relatively light and small, and can be used by being hung on the shoulder with the shoulder belt 14 attached at a proper position in the middle of the operating handle and operated by the operating handle 13. Is. However, although these brush cutters are excellent in portability, they are designed and manufactured specifically for brush cutting, so they have a high rotation speed, and are used only for applications such as brush cutting where low torque is required. It couldn't be done.

On the other hand, a machine for cultivating upland soil has a considerable weight even if it is small, and is only equipped with wheels for movement, which makes it difficult to use for simple cultivation such as small gardening and home gardening. Even in commonly known snow removal machines,
It's heavy, and only has wheels and tracks,
It was difficult to use for slight snow removal at the entrance, etc., and they were also very expensive machines.

On the other hand, it is hard work to perform field cultivation and snow removal work with a hoe or a scoop, and the work is difficult.

[0005]

As described above, it is difficult to manually perform operations using a hoe or a scoop as described above, and the conventional small-sized machine such as a cultivator and a snowplow equipped with wheels has a problem. , It cannot be easily transported, lacks mobility, and is wasteful in terms of moving energy.

In view of the above, the present invention focuses on the portability of the brush cutter, and removes the rotary blade of the brush cutter, and instead installs a working machine having a simple structure having a speed reducing means to perform simple field cultivation and snow removal. The purpose is to provide a portable work machine capable of performing

[0007]

In order to achieve the above-mentioned object, the present invention provides a drive engine at the rear end of the operating handle rod, and drives the drive engine at the front end of the operating handle rod. In a portable work machine connected to the first drive shaft of a brush cutter, in which a first drive shaft serving as a power source is provided, and an operation handle and a shoulder belt are attached to an appropriate position in the middle of the operation handle rod, Above the first part of the work machine body having the different axis reduction means inside, the first connecting means is provided in the vertical direction through the drive connecting means
A second drive shaft connected to the drive shaft is provided, and a work shaft decelerated from the second drive shaft is provided in the left-right or front-rear direction of the work machine body. I put it on.

When a rotary blade for removing snow is used as the rotating work means, it becomes a portable snow remover. When a rotary tillage blade is used as the rotating work means, it becomes a portable tillage work machine.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 6 shows an example of a commercially available brush cutter. Since the configuration has been described in the section of the prior art, detailed description will be omitted. A rotary blade 15 for mowing is attached to the tip of the brush cutter for use.
5 is attachable to and detachable from the tip disk by a fixing member 16 such as a bolt. In the present invention, the fixing member 16 is removed, and the portable working machine shown in FIGS. 1 and 2 is attached and used in place of the rotary blade 15.

The configuration of the portable work machine according to the present invention will be described below. FIG. 1 shows an external view of a portable work machine according to the present invention (hereinafter, simply referred to as a work machine) to which a rotary blade 30 for snow removal is attached to be used as a snow removal work machine. FIG. 2 shows an example of a method of mounting the working machine on the operating handle rod 10 of the brush cutter. The work machine includes a deceleration transmission means inside the work machine body 20. The deceleration transmission means will be described later.

As shown in FIG. 2, a second drive shaft 21 is arranged vertically in the upper part of the work machine main body 20, and a work shaft 22 is arranged in a right and left direction perpendicular to the second drive shaft. ing. First, the second drive shaft 21 of the working machine and the first of the brush cutter
The connecting means with the drive shaft 12 will be described. A fixing member 16 such as a bolt is screwed and attached to the first drive shaft 12 of the brush cutter from a drive shaft attachment hole 17b provided in the connecting disc 17. The connecting disc 17 has a mounting hole 17
a is provided in at least two places. On the other hand, a connecting bar member 18 is attached to the second drive 21 shaft side by welding or the like, and an attaching hole 18a is provided in the connecting bar member 18 so as to correspond to the attaching hole 17a of the connecting disc 18. Attachment hole 17 for connecting disc and connecting bar
The bolts 19 and the like connect between a and 18a.

Next, it is attached to the brush cutter so that the middle part of the operating handle rod 10 is sandwiched by the mounting arm 23 and the sandwiching member 24 extending from the left and right of the main body of the working machine. At this time, if one side of the holding member is connected with a hinge 24a or the like, it can be easily attached by tightening with the other thumbscrew 24b or the like. In the present invention, the above-mentioned configuration is intended to fix the working machine main body to the brush cutter, and is not limited to such a configuration as long as the purpose can be achieved.

Next, the deceleration means will be described. In Figure 3,
The structural example of the gearbox (work machine main body) by a worm gear is shown. A worm 25 is attached to the second drive shaft 21 and a worm wheel 26 is attached to the work shaft 22 side to make the rotation axes orthogonal to each other for deceleration transmission.

FIG. 4 shows an example of the structure of a gear box using a hypoid gear. A hypoid small gear (pinion gear) 41 is formed at the tip of the second drive shaft 21, and a hypoid large gear 42 is attached to the working shaft 22 side and pivotally mounted by bearings 43, 44, etc., respectively.

FIG. 1 shows a state in which the rotary blade 30 for snow removal is attached to the work machine having the above-mentioned structure. At the center of the rotary blade 30 for snow removal, a mounting portion 32 for attaching to the work shaft 22 is provided.
Is formed and is attached to the work shaft with a pin or bolt. Further, a blade portion 31 for scraping snow is formed on the outer peripheral portion. In the example shown in FIG. 1, the snow removal rotary blade 30 is attached to only one working shaft, but it may be attached to both working shafts. Further, the shape and angle of the blade portion are arbitrarily adjusted depending on the size of the rotating blade 30, the rotation speed, and the snow condition, but in the example shown in FIG. When moving forward while operating the handle so as to swing to the left and right S with respect to the snow removal operation direction V, it rotates in the direction W1 for scraping snow from the upper part to the lower part,
The snow that has been scraped off is discharged forward and upward after half a rotation. Therefore, it is preferable to attach a cover or the like for adjusting the snow discharge method. The ratio of decelerating the rotation speed of the first drive shaft of the brush cutter depends on the shape of the rotary blades and the output of the engine of the brush cutter, but is 1/10 to 1/30.
Is preferred.

Further, if a mechanism for adjusting the holding angle is provided between the mounting arm 23 and the holding member 24, the rotating blade can be simply removed by once removing the mounting arm, rotating the working machine main body 180 ° and reattaching it to the operating handle. It is also easy to set the rotation direction of 30 to the reverse rotation W2.

FIG. 5 shows a rotary tillage blade 5 for finely cultivating upland soil.
An example of 0 is shown. It is preferable that a central portion of the rotary tillage blade 50 is provided with a work shaft attachment portion 53, a plurality of blade portions 51 is provided, and a tip portion 52 is slightly curved in the left-right direction. When such a rotary tillage blade is used, the blade portion 5
1 oscillates left and right to cultivate upland soil, so you can cultivate finely. In particular, it is possible to cultivate evenly by swinging the handle of the brush cutter to the left or right while moving it forward or backward. The reduction ratio in this case is also arbitrarily selected as in the case of snow removal, but 1/1
0 to 1/30 is preferable.

[0018]

According to the present invention, instead of the rotary blade for mowing used in the brush cutter, a working machine having a simple structure having a speed reducing means can be attached, and various working shafts of this working machine can be mounted. By mounting the work rotating tool, the drive engine output of the brush cutter can be utilized according to the purpose of the work. In particular, when needed, it can be easily carried to the place where it is needed, and it can exhibit work capabilities that are incomparable to a hoe or scoop.

[Brief description of drawings]

FIG. 1 is an external view of a work machine portion according to the present invention.

FIG. 2 shows a method of mounting the working machine on the brush cutter.

FIG. 3 shows an example of a speed reducer using a worm gear.

FIG. 4 shows an example of a speed reducer using a hypoid gear.

FIG. 5 shows an example of a rotary tillage blade.

FIG. 6 shows an example of a brush cutter.

[Explanation of symbols]

10 Operation handle rod of brush cutter 11 Drive engine 12 First drive shaft 13 Operation handle 14 Shoulder belt 15 rotary blades 16 Fixed member 17 Connected disc 17a Attachment hole for connecting disc 17b Mounting hole to drive shaft of connecting disc 18 Connection bar members 18a Attachment hole for connecting bar member 19 Connection bolt 20 Working machine body 21 Second drive shaft 22 Working axis 23 Work machine mounting arm 24 Clamping member 24a hinge 24b thumbscrew 25 worm gear 26 worm wheel 27 bearings 30 Rotary blades for snow removal 31 Feather part 32 Rotating blade mounting part 41 Hypoid small gear 42 Hypoid large gear 43,44 bearing 50 rotary tillage blade 51 Cultivating blade 52 Blade part 53 Rotary tillage blade attachment

Claims (3)

[Claims] 1. A drive engine is provided at a rear end portion of the operation handle rod, and a first drive shaft having the drive engine as a drive source is provided at a front end portion of the operation handle rod, and the operation handle rod is provided. In a portable work machine used in connection with the first drive shaft of a brush cutter having an operation handle and a shoulder belt attached to an appropriate place in the middle of the work machine, an upper part of the work machine body having a different axis reduction means inside thereof. A second drive shaft connected to the first drive shaft in a vertical direction via a drive connecting means, and work decelerated from the second drive shaft in the left-right or front-rear direction of the work machine body. A portable working machine utilizing a bush cutter, wherein a shaft is provided and a rotary working means is attached to the working shaft. 2. A portable snow removing work machine utilizing a brush cutter according to claim 1, wherein the rotating working means is a rotary blade for removing snow. 3. The rotary working means is a rotary tilling blade.
A portable tillage machine that uses the described brush cutter.