Device for compacting road paving materials
First Claim
1. A device for compacting road paving materials, comprising a screed which is fastened to a road finisher and extends transversely to the working direction of the finisher, and a tamper which is arranged upstream and/or downstream of said screed and which has a tamper strip which can be driven to perform a striking upward and downward movement (S), said tamper strip being equipped in its interior with an electrical heater in the form of a bar-shaped heating element which can be clamped in a cavity of the tamper strip, characterized in that the heating element is a round-tube heating body whose heating filament is folded over at least once at a free end of the round-tube heating body to form two bars arranged adjacently to one another which are connected in a common connecting block to an electrical supply line.
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Accused Products
Abstract
The invention relates to a device for compacting road paving materials, comprising a screed board which is fastened on a road finisher and extends at a right angle to the direction of travel of the road finisher and a tamper that is mounted in front and/or behind the screed board. The tamper has a tamper strip that can be driven to perform a striking upward and downward movement and the interior of which is equipped with an electrical heating unit in the form of a rod-shaped heating element that can be clamped into a recess of the tamper strip. The device according to the invention is characterized by a spring accumulator receiving a heating element in the direction of the striking upward and downward movement for clamping the heating element.
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Citations
18 Claims
- 1. A device for compacting road paving materials, comprising a screed which is fastened to a road finisher and extends transversely to the working direction of the finisher, and a tamper which is arranged upstream and/or downstream of said screed and which has a tamper strip which can be driven to perform a striking upward and downward movement (S), said tamper strip being equipped in its interior with an electrical heater in the form of a bar-shaped heating element which can be clamped in a cavity of the tamper strip, characterized in that the heating element is a round-tube heating body whose heating filament is folded over at least once at a free end of the round-tube heating body to form two bars arranged adjacently to one another which are connected in a common connecting block to an electrical supply line.
Specification