HQ PQ NQ 3 HQ3 BTW BTW double tube / triple tube core barrel
SIZE of double tube / triple tube core barrel:
The structure and work principle of C series wire line drilling tools C series wire line drilling tools included core barrel assembly and overshot assembly:Outer tube assembly contains locking coupling,adapter coupling ,landing ring,reaming shell,outer tube,outer tube and bit. inner tube assembly including spearhead point,detent mechanism,adjusting mechanism, Pensile institutions, tube assembly remove institutions, In position news agency and Core jams news agency etc.
The mainly institutions (see chart 1&2) and working principle of double tube / triple tube core barrel
as follows:
1,Detent mechanism
2,Pensile institutions
3,Single movement mechanism
4,Adapter mechanism
5,In position news agency
6,Core jams news agency
B,over shot assembly structure and working principle
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