Patent Application
20080083298
This invention will be better understood by referring to the accompanying drawings, wherein:
A preferred embodiment of a counter weight flywheel made of one-twelfth of iron and eleven-twelfths of concrete in the present invention, as shown in
The upper and the lower faceplate 10, 11 are respectively made of iron plate with a proper thickness, cut into a circular plate according to the circumferential size of the counter weight flywheel 1. The upper and the lower faceplate 10, 11 are respectively bored with a shaft hole 100, 110 in the center. The upper faceplate 10 is bored with 3-6 through holes 101 and 6-12 insert holes 102 respectively spaced apart equidistantly, and each through hole 101 filled therein with a cover member 103.
The outer and the inner cylindrical body 12, 13 are respectively made of iron plates, and the inner cylindrical body 13 having its outer wall equidistantly bored with a plurality of insert holes 130 is fitted in the interior of the outer cylindrical body 12. The outer and the inner cylindrical body 12, 13 are disposed between the upper and the lower faceplate 10, 11.
The tensile bars 14 are respectively inserted in the insert holes 130 in the outer wall of the inner cylindrical body 13.
The shaft tube 15 is an iron tube vertically fixed in the center of the inner cylindrical body 13 to serve as a bearing center of the counter weight flywheel 1. The length of the shaft tube 15 is tantamount to the thickness of the counter weight flywheel 1, and the shaft tube 15 has its outer wall mounted with a plurality of fixing members 16 respectively for fixing one end of the tensile bar 14.
The reinforcing bars 17 annularly positioned between the outer and the inner cylindrical body 12, 13 are made into a net-like structure formed by different-sized steel bars connected in series.
The reserve tubes 18 made of iron tubes are equidistantly disposed between the outer and the inner cylindrical body 12, 13 and respectively have one end inserted in the insert holes 102 of the upper faceplate 10.
To make a counter weight flywheel, as shown in
After finished, the counter weight flywheel 1 of this invention has to be tested in the specific gravity value. The specific gravity value of the whole counter weight flywheel 1 can be adjusted by means of the reserve tubes 18 positioned in the counter weight area 3. When it is detected that certain portion of the counter weight flywheel 1 has to be added with weight, the reserve tubes 18 of this portion of the counter weight flywheel 1 can be fill therein with iron materials of equivalent specific gravity to let the specific gravity value of a respective portion of the counter weight flywheel 1 attain to zero error. In addition, the whole external appearance of the counter weight flywheel 1 looks even and smooth, as the flywheel 1 is made of iron plates welded together; therefore, what should be done is to have the welded portion of the iron plates ground and polished to make the surface of the whole counter weight flywheel 1 extremely even and smooth, needless to be flattened by a processing master machine and thus saving time and cost in processing.
Substantially, the cost of a conventional counter weight flywheel made of cast iron is pretty high. For the present, one ton of cast iron is about NT$40,000 and the processing expense of a processing master machine is about NT$10,000, so the total expense for making the conventional counter weight flywheel is NT$50,000 or so. Supposed that the conventional counter weight flywheel weighs 10 tons, the expense needed for such a counter weight flywheel will be up to NT$50,000. Compared with the conventional counter weight flywheel, the counter weight flywheel of this invention costs much less. The counter weight flywheel of this invention is made of 1/12 of iron and 11/12 of concrete, and if the counter weight flywheel weighs 10 tons, the iron is 0.83 tons and the concrete is 9.17 tons. The expense of one ton of iron is NT$20,000 so the total expense of 0.83 tons of iron is NT$16,600, and the expense of 2,000 pounds of concrete is NT$1,700 so the total expense of 9.17 tons of concrete is NT$6,510. Therefore, the total expense of the iron and the concrete of the counter weight flywheel of this invention is NT$23,110, and it is needless to pay for the processing of a processing master machine. Evidently, the cost of making the counter weight flywheel of this invention (about NT$23,110) is 16 times lower than the cost of making the conventional counter weight flywheel (about NT$500,000), greatly reducing producing cost and elevating economic gain.
Further, since the counter weight flywheel of this invention does not need a processing master machine; therefore, a counter weight flywheel with a very large volume can be produced. Furthermore, the counter weight flywheel 1 of this invention can be composed of several separated sections that can be assembled together to make up a large-sized counter weight flywheel 1, which can then be disassembled for facilitating transport and assembly, able to save transporting space and cost. Moreover, the whole thickness of the counter weight flywheel of this invention, made of iron and concrete, is three times larger than that of cast iron, but the increased thickness of the counter weight flywheel will not influence the operation of a machine.
In addition, the counter weight area 3 of the counter weight flywheel 1 of this invention can be injected therein with iron sand whose specific gravity is larger than that of concrete so as to increase the weight of the counter weight area 3 and reduce the thickness of the counter weight flywheel 1, equally having the same function as that described previously.
While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.
