Adjustable bolster swing legs for slipform paving machines

  • US 9,908,571 B2
  • Filed: 06/14/2017
  • Issued: 03/06/2018
  • 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 laying concrete into a molded form, having a generally upwardly exposed 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;

    a forward bolster connected to the forward end of the center module;

    an aft bolster connected to the aft end of the center module;

    a first crawler track and a second crawler track mechanically coupled to the forward bolster and a third crawler track mechanically coupled to the aft bolster;

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

    a first power drive between the first jacking column and the first crawler track of the first swing leg, configured for translating relative rotational movements between the first jacking column and the first crawler track.

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