1. Field of the Invention
The present invention relates to a rotational cutting blades assembly for wood chopper. Particularly, it relates to rotational cutting blades assembly for wood chopper that has alternately separated blades seats. Regarding this invention, it is easy to replace or to repair it. The blade life can be prolonged. The debris guiding is smooth. And, the power consumption is less.
2. Description of the Prior Art
Traditionally, for most abandoned wood (or bush wood, tree branches, etc.), if it can be chopped into small pieces or debris, it will be easier to make further processing or recycling. For example, the debris can be used for burning or to be treated as an organic fertilizer, and so on. But, if a person uses an electric saw to cut the wood, this wood only can be cut into lager pieces. If the person uses an axe to cut it, it is hard to cut into smaller pieces. Therefore, it is difficult to cut or chop the abandon wood into smaller pieces or debris.
In addition, the traditional electric saw usually has a plurality of cutting edges on its saw blade. If one or two cutting edges are worn out or broken, the entire saw blade should be abandoned. It is just a waste.
The primary object of the present invention is to provide a rotational cutting blades assembly for wood chopper. Because one of its blade seats can be detached and replaced, it is easy to replace or to repair it.
The next object of the present invention is to provide a rotational cutting blades assembly for wood chopper. The blade life can be prolonged.
The other object of the present invention is to provide a rotational cutting blades assembly for wood chopper. The debris guiding is pretty smooth.
Another object of the present invention is to provide a rotational cutting blades assembly for wood chopper. The power consumption is less.
In order to achieve above-mention objects, a technical solution is provided below.
A rotational cutting blades assembly for wood chopper, comprising
Referring
With regard to the rotational shaft 10, its cross-sectional shape could be hexagonal, octagonal, or polygonal. Or, the shaft 10 has a key recess (not shown) for cooperating with a key (not shown).
Concerning these blade seats 20, each blade seat 20 has a predetermined width W (as shown in
In this embodiment, there are twelve blade seats 20 separating by 120 degrees alternately. One of the blades seats 20 and its adjacent blade seat 20 are disposed apart by a substantially 120 degrees therebetween about their extending directions from the shaft 10. Therefore, the first, fourth, seventh, and tenth blade seats are fixed at the angle of zero degree. The second, fifth eighth, and eleventh blade seats are fixed at the angle of 120 degrees. And, the third, sixth, ninth, and 12th blade seats are fixed at the angle of 240 degrees. Of course, they can be designed by alternate 90 degrees apart or by other specific separating angles.
About these cutting blades 30, they are mounted on the plurality of blade holding portions 30 respectively. Each cutting blades 30 has a predetermined thickness T (as shown in
Referring to
Moreover, as illustrated in
If a specific cutting blade 30 is worn out or one blade seat 20 is broken, this specific blade seat 20 can be detached out and just replace a new one (with a new cutting blade) individually. On the other hand, only the broken one needs to be replaced or repaired. There is no need to replace the entire set of cutting blades assembly.
Therefore, the advantages and functions of this invention can be summarized as follows:
The above embodiments are only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiments can be made without departing from the spirit of the present invention.
Number | Date | Country | Kind |
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093202533 | Feb 2004 | TW | national |