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US 5,735,634 AGranted
Road finisher and a method of applying surface layers
AssigneeJoseph Vogele AG
InventorsAlfred Ulrich, Erich Resch, Gunter Zegowitz
Life of this patent
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AssigneeJoseph Vogele AG
InventorsAlfred Ulrich, Erich Resch, Gunter Zegowitz
Estimating the term…
A road finisher, which is used for simultaneously applying at least two surface layers comprises a chassis, a travelling mechanism, at least two premix containers arranged on said chassis, a lateral distributor associated with the respective premix container and adapted to have material supplied thereto via a conveyor path extending in the chassis, and lateral outriggers attached to the chassis as well as a dragged road-surface applying device used for applying a surface layer and arranged on said outriggers, all road-surface applying devices being high-compaction road-surface applying screeds for recompaction-free application of a surface layer, and each high-compaction road-surface applying screed constituting a rear screed, when seen in the direction of movement, which is constructed as a high-compaction road-surface applying screed which is adapted to be used for applying and compacting concrete. In the method of applying surface layers by use of such a road finisher, the surface layers are applied one immediately after the other and in one operation in such a way that each first surface layer is highly compacted during application to such a degree that recompaction is no longer necessary and each following surface layer is applied to the highly-compacted surface layer and then, in turn, highly compacted to such a degree that recompaction is no longer necessary.
A road finisher for simultaneously applying at least two surface layers, comprising a chassis, a travelling mechanism, at least two premix containers arranged on said chassis, a lateral distributor associated with each respective premix container, each lateral distributor being arranged behind the chassis and adapted to have material supplied thereto from its premix container via a conveyor path extending in the chassis, and further comprising lateral outriggers attached to the chassis, a dragged road-surface applying device for applying a surface layer being arranged on said outriggers behind each lateral distributor, each road-surface applying device being a rear high-compaction road-surface applying screed for recompaction-free application of a surface layer, and each rear high-compaction road-surface applying screed constructed to be used for applying and compacting concrete and including a tamper device located at the front of the screed and at least one transversely extending high-compaction compacting strip separated from said tamper device by a smoothing plate which is adapted to be acted upon by means of a vibration device, said compacting strip being operatively connected to at least one swelling force drive, each swelling force drive being arranged in a high-compaction road-surface applying screed in such a way that its upwardly directed reaction force resulting from the force applied to the compacting strip is directed straight against the total mass of the high-compaction road-surface applying screed which acts as an abutment, said tamper device having a tamper-strip contact angle that is smaller than 45.degree..
A road finisher for simultaneously applying at least two surface layers, comprising a chassis, a travelling mechanism, at least two premix containers arranged on said chassis, a lateral distributor associated with each respective premix container, said lateral distributor being arranged behind the chassis and adapted to have material supplied thereto from its premix container via a conveyor path extending in the chassis, and further comprising lateral outriggers attached to the chassis, a dragged road-surface applying device for applying a surface layer being arranged on said outriggers behind each lateral distributor, each road-surface applying device being a rear high-compaction road-surface applying screed for recompaction-free application of a surface layer, and each rear high-compaction road-surface applying screed constructed to be used for applying and compacting concrete and including a tamper device located at the front of the screed and at least one transversely extending high-compaction compacting strip separated from said tamper device by a smoothing plate which is adapted to be acted upon by means of a vibration device, said compacting strip being operatively connected to at least one swelling force drive, each swelling force drive being arranged in a high-compaction road-surface applying screed in such a way that its upwardly directed reaction force resulting from the force applied to the compacting strip is directed straight against the total mass of the high-compaction road-surface applying screed which acts as an abutment, and at least one bonding-additive tank arranged on the chassis and connected to a spray device arranged on said chassis.
A road finisher for simultaneously applying at least two surface layers, comprising a chassis, a travelling mechanism, at least two premix containers arranged on said chassis, a lateral distributor associated with each respective premix container, said lateral distributor being arranged behind the chassis and adapted to have material supplied thereto from its premix container via a conveyor path extending in the chassis, and further comprising lateral outriggers attached to the chassis, a dragged road-surface applying device for applying a surface layer being arranged on said outriggers behind each lateral distributor, each road-surface applying device being a rear high-compaction road-surface applying screed for recompaction-free application of a surface layer, and each rear high-compaction road-surface applying screed constructed to be used for applying and compacting concrete and including a tamper device located at the front of the screed and at least one transversely extending high-compaction compacting strip separated from said tamper device by a smoothing plate which is adapted to be acted upon by means of a vibration device, said compacting strip being operatively connected to at least one swelling force drive, each swelling force drive being arranged in a high-compaction road-surface applying screed in such a way that its upwardly directed reaction force resulting from the force applied to the compacting strip is directed straight against the total mass of the high-compacting road-surface applying screed which acts as an abutment, at least one of the rear high-compaction road-compaction road-surface applying screeds being coupled by means of an outrigger to an outrigger of a preceding high-compaction road-surface applying screed.
Dependencies are inferred from the claim text.