Extendable pipe crawler
- North Augusta, SC
A pipe crawler having a front leg assembly and a back leg assembly connected together by two air cylinders, each leg assembly having four extendable legs and a pair of actuators for sliding the extendable legs radially outward to increase the range of the legs when the pipe crawler enters a section of a pipe having a larger diameter. The crawler crawls by "inchworm"-like motion, the front leg assembly and back leg assembly alternately engaging and disengaging the wall of the pipe to hold the pipe crawler as the air cylinders alternately advance the front leg assembly and bring up the rear leg assembly. The pair of actuators of each leg assembly are parallel, adjacent and opposing acting so that each slides two adjacent extendable legs radially outward.
- Research Organization:
- E I DUPONT DE NEMOURS & CO INC
- DOE Contract Number:
- AC09-76SR00001
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 5018451
- OSTI ID:
- 867832
- Country of Publication:
- United States
- Language:
- English
Similar Records
Extendable pipe crawler
Pipe crawler with extendable legs
Related Subjects
pipe
crawler
front
leg
assembly
connected
air
cylinders
legs
pair
actuators
sliding
radially
outward
increase
range
enters
section
larger
diameter
crawls
inchworm
-like
motion
alternately
engaging
disengaging
wall
hold
advance
bring
rear
parallel
adjacent
opposing
acting
slides
assembly connected
air cylinders
pipe crawler
rear leg
front leg
leg assembly
air cylinder
radially outward
larger diameter
extendable legs
/104/