Unlike most previous exoskeletons, which simplified the knee joint as a
pin joint, ours provides 2 DOF to make the exoskeleton's movement consistent with a patient's natural movement."
[7] Krystek, J., Kottner, R., Load capacity prediction of carbon or glass fibre reinforced plastic part of wrapped
pin joint. Materiali in Tehnologije, 2015, roc.
For
pin joint support we adopt the following boundary conditions [11]:
The NeverGrease
pin joint option keeps joints tight longer for more productive operation, extending pin life overall and eliminating daily greasing.
Balfour Beatty Rail Projects, who have a design team based in Kirkby,has signed u
pin joint venture with Mendes Junior Chile, to build lines 4 and 4 a for the metro in Santiago, Chile.
The sliding contact also provides stress relief since the
pin joint can slide during expansion and contraction.
The system is somewhat similar to the one Ritchie used in the Leipzig exhibition hall (AR March 1996 p77), but there the spherical bearing (in effect a three-dimensional
pin joint) is in the plane of the glass itself.