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US 8,118,316 B2Granted
Operational methods for a road-building machine
AssigneeWirtgen GmbH
InventorsChristian Berning, Dieter Simons, Markus Schafer
Life of this patent
Estimating the term…
Abstract
A method of operating a road-building machine involves a machine having a chassis with four ground engaging supports and four working cylinders connecting the ground engaging supports to the chassis. A height of the left front and right rear ground engaging supports is adjusted in a first direction. The height of the right front and left rear ground engaging supports is adjusted in a second direction opposite the first direction.
Claims20
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.
14 more elements
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 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 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 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 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;
- the first, second, third and fourth working cylinders extending vertically when the chassis is oriented horizontally;
- 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, the first and second directions being vertical when the chassis is oriented horizontally.
15 more elements
Dependencies are inferred from the claim text.