SUPPORT ASSEMBLY FOR A CORE DRILL
A support assembly for a core drill which utilizes an improved high strength spoked reinforcer. The reinforcer may be removably mounted a core drill tube by fasteners. A drive connection is removably mounted and centrally located on an outer disc of a pair of discs. The drive connection is adapted to connect with a drive shaft to cause rotation of the tube. The assembly can also include a split in the disc when the high strength spoked reinforcer is not welded thereto, thereby providing a means of water control. The high strength spoked reinforcer can be a separate piece that is bolted to the disc or can be integrally formed as one piece therewith.
1 . A bolt on drive assembly for a core drill comprising:
a cylindrical tube having a cutting edge at one longitudinal end and an open end at an opposite longitudinal end;
a mounting means mounted at said open end;
a high strength spoked reinforcer, said spoked reinforcer having a center hub from which extends radially a plurality of spoked members, said spoked members has a strengthening member extending perpendicularly therefrom in the direction of the Z-axis and wherein said spoked members being attached to said mounting means;
a disc mounted onto said high strength spoked reinforcer and also onto said mounting means;
a drive connection centrally mounted on said disc, said drive connection adapted to connect to a drive shaft to cause rotation of said tube; and
a series of removable fasteners to secure said disc and said high strength spoked reinforcer to said mounting means.
2 . The bolt on drive assembly as defined in claim 1 wherein said tube having a hollow chamber, said mounting means comprising a mounting ring, said mounting ring being located within said hollow chamber.
3 . The bolt on drive assembly as defined in claim 1 wherein a water stop disc is mounted to said high strength spoked reinforcer, said water stop disc to function to prevent the passage of water from within said hollow chamber through said open end.
4 . The bolt on drive assembly as defined in claim 1 wherein said drive connection comprising a coupler adapted to be threadably secured to a drive shaft.
5 . The bolt on drive assembly as defined in claim 4 wherein said coupler being removably mounted with bolt fasteners to said high strength spoked reinforcer.
6 . The bolt on drive assembly as defined in claim 1 wherein said high strength spoked reinforcer is integrally formed as one piece with said disc.
7 . The bolt on drive assembly as defined in claim 1 wherein each of said plurality of spoke members is offset from said center hub.
8 . The bolt on drive assembly as defined in claim 1 wherein each of said plurality of spoke members includes one or more supports along the length of each of said plurality of spoke members.