Adjustable bolster swing legs for reorienting crawlers for slipform paving machines

  • US 9,708,020 B2
  • Filed: 05/06/2016
  • Issued: 07/18/2017
  • Est. Priority Date: 03/26/2010
  • Status: Active Grant
First Claim
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1. A paving machine configured to move in a paving direction for spreading, leveling and finishing concrete into a form having a generally upwardly exposed, finished concrete surface and terminating in lateral concrete sides, the paving machine comprising:

  • a center module having a forward end, an aft end, and lateral sides;

    at least two forward bolsters laterally and movably connected to respective lateral sides of the center module;

    at least two aft bolsters laterally and movably connected to respective lateral sides of the center module;

    a crawler track mechanically coupled to each forward bolster and each aft bolster;

    a swing leg for each bolster;

    an upright jacking column secured to each swing leg, having a rotary connection between the jacking column and the crawler track permitting relative rotational movements of the crawler track with regard to the jacking column about an upright axis; and

    a power drive unit between associated jacking columns and crawler tracks configured for translating relative rotational movements between the associated jacking columns and the crawler tracks.

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