Thursday, 24 January 2013

Crawler units

Parallel with the previously described I built the frames of the 12 main crawler units, largely out of 2mm gauge plate because of the huge load that will eventually rest on them.  The 3 bridge-like support structures which pivot on the underside of the toroidal core via the 20mm high-tensile bolts (which go into the 3 fin-like appendages to the core - described earlier) were also constructed.  These support structures are immensely strong, each consisting of 8 adjoined closed boxes made entirely  from 2mm plates. Each must support about 350 kgs.
Twelve crawler frames plus supporting structures

Four crawler frames with supporting structure
Steering tillers can be seen in the top picture.  These will be attached to motor-driven ram units to effect steering of the machine.

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