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Road finisher with heating element for screed

A heating element, electric heating element technology, applied in the direction of roads, roads, road repair, etc., to achieve the effect of improving work and production quality, preventing material weakening, and preventing efficacy

Active Publication Date: 2018-10-23
JOSEPH VOEGELE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the drawbacks involved in the above variants include operating the heating elements and the generator at optimum efficiency while making optimum use of the performance of existing components

Method used

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  • Road finisher with heating element for screed
  • Road finisher with heating element for screed
  • Road finisher with heating element for screed

Examples

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Embodiment Construction

[0031] figure 1 An exemplary embodiment of a road paver 1 according to the invention with a heatable screed 3 and a tractor 5 is shown schematically. Different types of screeds 3 can be replaceably attached to the tractor 5 via a fastener mechanism. On the underside of the screed 3 there is a compacting unit 7 which converts the paving material into a flat and firm paving surface. A weight sensor 8 is attached to the suspension of the screed 3 at the tractor 5 , which can be used to determine the screed configuration from known weight values ​​of different models of screed 3 .

[0032] figure 2 A schematic diagram showing an exemplary embodiment of a road paver 1 according to the invention with a heatable screed 3 in a first screed configuration comprising a basic screed 9 . Two power lines 25 run from the tractor 5 to the basic screed 9 and are mainly used to provide power for screed heating and due to the two-wire design of the power lines 25 are already adapted to suppl...

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Abstract

A road paver (1) comprises a generator (G), a control device (15) and a screed (3), the screed (3) comprising a basic screed (9) and being suited to be modified, by selectively attaching or detachingbroadening parts (11, 13), from a first to at least a second, different screed configuration. The basic screed (9) and the broadening parts (11, 13) each comprise one compacting unit (7) and one electric heating element (27) to be supplied with power from the generator (G) for heating the compacting unit (7) to prevent the laying material from adhering to the compacting unit (7) and to finish a high-quality road pavement. The control device (15) is configured to individually switch on or off each one of the two resistance wire windings of the heating element (27) of the basic screed (9) depending on the screed configuration determined by the control device (15) to distribute electrical power generated by the generator (G) to the individual resistance wire windings (41).

Description

technical field [0001] The invention relates to a road paver with a screed heating element. Background technique [0002] Electrically heating the screed and compacting units, such as tamps, screeds and pressure bars, is well known in road paver machines. These components must be heated to prevent the paving material, which is also heated, from adhering to the components. The temperature of the paving material is about 160°C to 185°C under working conditions. Accordingly, a heating element with a resistance wire winding is attached to the screed of the road paver and is preheated to the desired operating temperature prior to the paving operation and maintained at the desired operating temperature during the paving operation. required operating temperature. The heating elements are here usually supplied with power and voltage by means of a generator driven by a main drive, usually a diesel engine. In order to limit the power input or energy consumption for the heating of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C19/48
CPCE01C19/42E01C19/48E01C23/14E01C2301/14E01C2301/10E01C19/486
Inventor M·布施曼R·魏泽尔R·蒙茨C·帕夫利克
Owner JOSEPH VOEGELE AG
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