Electric heating rod group for emulsified asphalt tank of asphalt spreading paver

Abstract

The invention discloses an electric heating rod group which is applied to an emulsified asphalt tank of an asphalt spreading paver to realize heating and thermal insulation functions on an emulsified asphalt material in the tank body. The electric heating rod group comprises a junction box (1), a connection flange (2), an internal thread short steel pipe (3), a temperature switch (4) and a heating rod body (5), wherein the junction box (1) is connected with the connection flange (2) through a bolt; the internal thread short steel pipe (3) is welded at the center of the connection flange (2); the temperature switch (4) is mounted at the center of the heating rod group through the internal thread short steel pipe (3); and the heating rod body (5) is divided into nine round heating rods which are of a U-shaped structure and are uniformly welded on the connection flange (2). The electric heating rod group disclosed by the invention meets the need for the heating power of a large-capacity tank body, and realizes flexible temperature rise by reducing the power of a single heating rod so as to avoid an excessive short-time heat value; and meanwhile, the temperature switch is integrated in the electric heating rod group, and the start / stop of the electric heating rod group can be separately controlled so as to realize an effect on preventing local overheating.

Description

technical field [0001] The invention relates to the field of paver, in particular to a heating device for an emulsified asphalt tank of an asphalt spreading paver. Background technique [0002] The asphalt spreading paver is a road construction machine that realizes simultaneous spreading and paving of modified emulsified asphalt and asphalt mixture. There is a tank for storing emulsified asphalt on it, with a volume of more than 2,000 liters. Emulsified asphalt materials generally need to be heated and kept at a temperature of 60-70°C for spraying operations. There are two advantages of construction at this temperature. One is low viscosity and easy to spray. Penetration: Emulsified asphalt materials should not be exposed to high temperatures above 100°C before spraying. If exposed to this high temperature, the emulsified asphalt will break and solidify. Not only can it not be sprayed, but it can even block pipes and damage equipment in severe cases; [0003] In the past, ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a new type of electric heating rod group to directly contact and heat the emulsified asphalt material in view of the special requirements for the heating temperature of the emulsified asphalt material and the shortage of the existing heating method, ensuring that the large-capacity tank At the same time as the body heating needs, it can avoid excessive heat generation in a short time and prevent local overheating

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