Sizing intercepting rock core drilling tool
A core and drilling tool technology, which is applied in the field of cut-to-length core drilling tools, can solve problems such as fusion, and achieve the effect of reducing driving power and material consumption
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[0014] Such as figure 1 In the shown cut-to-length core drilling tool, the lower part of the keyway inner core thread 1 of the drill tool is threadedly connected to the upper part of the drill bit, and the upper part of the upper sleeve thread 11 is connected to the lower part of the long core pipe thread, that is, the cut-to-length core drilling tool is A single part is connected in series between the long core tube and the drill bit.
[0015] The upper part of the top cutter body 6 is welded with the cutter head 9, and the lower part is loaded with the return spring 8. The cutter shaft 7 passes through the holes of the top cutter body 6 and the return spring 8, and is fixedly assembled at the shaft hole position of the inner core 2 of the keyway, and the O-shaped sealing ring is inserted into the keyway The position of the sealing ring 4 on the inner core 2.
[0016] The upper sleeve 10 is fixedly equipped with an insert 5 in the middle, the upper sleeve 10 and the keyway i...
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