Operational methods for a road-building machine

  • US 8,118,316 B2
  • Filed: 10/25/2010
  • Issued: 02/21/2012
  • Est. Priority Date: 03/10/2005
  • Status: Active Grant
First Claim
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1. A method of operating a road-building machine, comprising:

  • (a) providing a road-building machine including;

    a chassis having a forward direction;

    a left front ground engaging support;

    a right front ground engaging support;

    a left rear ground engaging support;

    a right rear ground engaging support;

    a first working cylinder rigidly connected to the chassis and connected to the left front ground engaging support for adjusting a height of the left front ground engaging support relative to the chassis;

    a second working cylinder rigidly connected to the chassis and connected to the right front ground engaging support for adjusting a height of the right front ground engaging support relative to the chassis;

    a third working cylinder rigidly connected to the chassis and connected to the left rear ground engaging support for adjusting a height of the left rear ground engaging support relative to the chassis;

    a fourth working cylinder rigidly connected to the chassis and connected to the right rear ground engaging support for adjusting a height of the right rear ground engaging support relative to the chassis;

    a rotating working drum supported from the chassis between the front ground engaging supports and the rear ground engaging supports and extending transversely to the forward direction;

    each of the working cylinders including at least one working chamber filled with a pressure medium; and

    coupling lines connecting the working cylinders to one another and providing a positive hydraulic coupling between the working cylinders;

    (b) adjusting the height of the left front and right rear ground engaging supports in a first direction; and

    (c) adjusting the height of the right front and left rear ground engaging supports in a second direction opposite the first direction.

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