Method for heating a paver screed

A technology for paving machines and heating devices, applied in ohmic resistance heating, roads, roads, etc., can solve the problems of generator load, reduce the life of heating elements, and reduce the life of fuel consumption, achieve simple and stepless changes, and achieve energy efficiency. , the effect of saving fuel

Inactive Publication Date: 2015-12-23
安曼瑞士股份公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, this method has the disadvantage that many switching devices are required for the heating element and that the lifetime of the heating element is significantly reduced due to the constant switching on and off
This leads to increased investment and maintenance costs
A simple intermittent on / off operation of the individual heating elements also results in a sudden intermittent load of the generator, which is detrimental to its lifespan
The primary drive motor is likewise operated or loaded intermittently, which is likewise detrimental to its service life and leads to increased fuel consumption in the case of internal combustion engines, such as diesel engines

Method used

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  • Method for heating a paver screed
  • Method for heating a paver screed

Examples

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Embodiment Construction

[0042] figure 1 A schematic diagram showing the heating device of the paving leveling ruler of the first paving machine according to the present invention, including an associated control unit for implementing the method according to the present invention.

[0043] As can be seen, the heating device includes the following main components: a three-phase current generator 1; a plurality of heating element groups 2a-2x respectively include three identical resistance heating elements 2, which are arranged in the paving machine evenly. The mud ruler 10; and a computer-aided control unit 3 for controlling or setting the heating power of each heating element 2.

[0044] The groups 2a-2x of heating elements 2 pass through a common voltage regulator 4, a common ground monitoring device 5 (insulation measuring instrument, fault current monitoring), a common main protection device 6 (electric isolation) and each group 2a- 2x is connected to the three-phase L1, L2, and L3 of the three-phase cu...

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Abstract

The invention relates to a method for heating a paver screed (10) equipped with a heating device. The heating device has electric heating elements (2) which are supplied with an electric current by means of a current generator (1) in order to generate the heat. The electric voltage (U) which is supplied to the heating elements (2) is changed in order to change the heating output of the heating device. The electric voltage applied to the respective heating element (2) is thus increased or decreased in order to control or regulate the heating output. In this manner, an energy-efficient operation is made possible, and the service life of the heating elements (2) as well as of the generator (1) can be substantially increased. The motor which drives the generator (1) is likewise spared, and fuel is also saved when using an internal combustion engine, for example a diesel engine.

Description

Technical field [0001] The present invention relates to a method for heating a paver leveling ruler equipped with an electric heating device for heating a paving machine according to the preamble of the independent claim, and a paving machine, in particular a paving machine for implementing the method. Background technique [0002] In the road paver, the working parts of the paver leveling ruler are usually heated electrically or with gas. This particularly relates to so-called tempering slats, leveling plates and, if necessary, pressing slats. These working parts must be heated until the same hot interior material no longer sticks easily. The temperature of the interior material added by the paver leveling ruler is, for example, about 170°C. The heating must continue during the interior. [0003] In the electric paver leveling ruler heating device, for example, a plurality of electric heating rods are distributed in the paving leveling ruler, and they are supplied with three-ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C19/48
CPCE01C2301/10E01C19/48H05B3/0014
Inventor U·特罗克斯G·罗马诺
Owner 安曼瑞士股份公司
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