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....ㆍWhen drilling
in unstable ground conditions, collapse of
.... ..side wall cause the difficult
drilling work and higher expense.
....ㆍKukje Kodex bit provides perfect solution to these problems
by drilling
.... ..the ground with casing work at
the same time.
....ㆍAfter drilling to the required depth,
Kodex bit can be lifted up
.... ..by rotation to the opposite direction
through the casing.
....ㆍFurther drilling can be achieved
by changing it into a conventional DTH bit.
....ㆍSize of casing is designed to be
purchased for low cost in the market.
.....■
CONSISTENT OF KODEX-BIT
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ㆍKODEX-BIT consists of Piliot Bit, Eccentric Reamer
...and Guide Device unlike other
BIT.
ㆍThe attrition rate of the components depends on work
...condition but Eccentric Reamer's
the most.
...So, KODEX-BIT consisted assembly
to interchange
...of the three component.
ㆍGuide Device is used by connected to Drive-sub of Hammer directly. |
.....■
Drilling by KODEX-BIT
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ㆍStart work - The part of eccentric reamer is being
...expanded when start work to
drilling hall wide enough
...to let casing down by the weight
or impulse of it.
...Casing is welded in Casing Shoe and Casing Shoe
...fall down by impulse of shuttle
working of Guide device
...with pulling the casing.
... Then occurred Chip(sludge)
pass along the groove
...that designed particular, over
the Guide device to go
...up through the space between
Hammer and Casing
...and then discharged to Chip
discharge head.
ㆍRecovery - To complete handling topsoil work or
...welding Casing by KODEX-BIT,
it need to be
...out of Casing.
...At this point according to set
radius of eccentric
...reamer minimize by backlashing
the drill, diameter
...of KODEX-BIT be smaller than
Casing pipe's so can
...draw out it from Casing. (refer
to picture)
ㆍWorking on base rock - Working on a base rock
...which can do without Casing
Work, can drilling until
...required depth with general
BIT. In that case
...interchangeability of our KODEX-BIT
and
...general BIT is as follows.
...KODEX 115 - General BIT Φ115(4½")
...KODEX 140 - General
BIT Φ140(5½")...
...KODEX 165 - General
BIT Φ165(6½")
...KODEX 190 - General
BIT Φ190(7½")
...KODEX 240 - General
BIT Φ250(10")...
...KODEX 370 - General
BIT Φ370(15")
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COMBINATION OF DTH HAMMER WITH KODEX-BIT
■ Guide sleeve - Be connected in between DTH HAMMER
and Drill Pipe(Drill Tube)
....and adjust direction of Casing.
....So, when work on a base rock which
can to without Casing Work, remove Guide
....sleeve and connect Tube with Hammer
directly. It's because diameter of Guide
....sleeve is lager than inside diameter
of Casing Shoe, and please
....attention about that.
■ Guide device - Preserve balance of PILOT BIT and Reamer in the
Casing
....Shoe and send inquired shock power
to shove along Casing Pipe down
....to Casing Shoe.
....Also, a connection part of KODEX-BIT
and DTH HAMMER.
■ Casing Shoe - Be made of high-tensile steel from special material,
and
....used as welded with Casing Pipe.
Fall down by shock power that Guide
....device sent, and protect the low
side of Casing from abrasion or transformation.
....Remove KODEX-BIT after top soil
work, to keep work with general BIT,
....the diameter of general BIT must
be smaller than inside diameter
....of Casing Shoe.
■ Casing Pipe - Items of KODEX-BIT by items of Casing Pipe is
....at the back side.
....In generally inside diameter of
Pipe depends on maximum diameter
....of Guide device so, only use inquired
products as any other pipe
....can cause unable recovery.
■ Discharge Head - Gather the Chip into a space, and designed to
....separate from Casing Pipe.
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