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#1
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Cable Tunneling: Mystery Mole?
Per "PV" edrnouser@ spam telus.net:
http://www.ditchwitch.com/trenchless...s/compact/JT5/ The link above shows one type of machinery involved, Vermeer is another manufacturer/ http://www.youtube.com/watch?v=GI-vVLJRZdg seems to show the process. Looks like I was off-base thinking that it could do curves. I'm guessing that the operator keeps it level just by experience and luck and that gray device that the helper is carrying along as the bore progresses is just a sensor to tell where the bit is. -- Pete Cresswell |
#2
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Cable Tunneling: Mystery Mole?
"(PeteCresswell)" wrote in message ... Per "PV" edrnouser@ spam telus.net: http://www.ditchwitch.com/trenchless...s/compact/JT5/ The link above shows one type of machinery involved, Vermeer is another manufacturer/ http://www.youtube.com/watch?v=GI-vVLJRZdg seems to show the process. Looks like I was off-base thinking that it could do curves. I'm guessing that the operator keeps it level just by experience and luck and that gray device that the helper is carrying along as the bore progresses is just a sensor to tell where the bit is. -- Pete Cresswell The drill bit can be steered using the location info supplied by the gray device. |
#3
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Cable Tunneling: Mystery Mole?
"(PeteCresswell)" wrote in message ... Per "PV" edrnouser@ spam telus.net: http://www.ditchwitch.com/trenchless...s/compact/JT5/ The link above shows one type of machinery involved, Vermeer is another manufacturer/ http://www.youtube.com/watch?v=GI-vVLJRZdg seems to show the process. Looks like I was off-base thinking that it could do curves. I'm guessing that the operator keeps it level just by experience and luck and that gray device that the helper is carrying along as the bore progresses is just a sensor to tell where the bit is. -- Pete Cresswell No they can be steered. The drill bit is assymetric. When it is rotating as it advances it goes in a straight line. To be steered off, it is hydraulically pushed while not rotating. Due to being eccentric, it then goes off at an angle. There is an electronic device inside the drill bit communicates it's orientation so the direction can be determined |
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