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Title: Miniature pipe crawler tractor

A pipe crawler tractor may comprise a half tractor assembly having a first base drive wheel, a second base drive wheel, and a top drive wheel. The drive wheels are mounted in spaced-apart relation so that the top drive wheel is positioned between the first and second base drive wheels. The mounting arrangement is also such that the first and second base drive wheels contact the inside surface of the pipe at respective first and second positions and so that the top drive wheel contacts the inside surface of the pipe at a third position, the third position being substantially diametrically opposed to the first and second positions. A control system connected to the half tractor assembly controls the rotation of the first base wheel, the second base wheel, and the top drive wheel to move the half tractor assembly within the pipe.
Authors:
 [1] ;  [1] ;  [2] ;  [1]
  1. (Idaho Falls, ID)
  2. (Westerville, OH)
Publication Date:
OSTI Identifier:
872901
Report Number(s):
US 6035786
DOE Contract Number:
AC07-94ID13223
Resource Type:
Patent
Research Org:
Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID
Country of Publication:
United States
Language:
English
Subject:
miniature; pipe; crawler; tractor; pipe; crawler; tractor; comprise; half; tractor; assembly; base; drive; wheel; base; drive; wheel; top; drive; wheel; drive; wheels; mounted; spaced-apart; relation; top; drive; wheel; positioned; base; drive; wheels; mounting; arrangement; base; drive; wheels; contact; inside; surface; pipe; respective; positions; top; drive; wheel; contacts; inside; surface; pipe; third; position; third; position; substantially; diametrically; opposed; positions; control; connected; half; tractor; assembly; controls; rotation; base; wheel; base; wheel; top; drive; wheel; move; half; tractor; assembly; pipe; drive wheels; drive wheels; drive wheels; diametrically opposed; pipe crawler; pipe crawler; base drive; base drive; base drive; base drive; inside surface; inside surface; drive wheel; drive wheel; drive wheel; drive wheel; drive wheel; drive wheel; drive wheel; drive wheel; drive wheel; mounting arrangement; top drive; top drive; top drive; top drive; apart relation; spaced-apart relation; crawler tractor; crawler tractor /104/105/