Asphalt mixture hot in-place recycling vehicle

Abstract

The invention discloses an asphalt mixture hot in-place recycling vehicle. The vehicle comprises a tractor and a frame connected with the tractor, wherein a cold batching device, a closed drying and heating roller, an asphalt metering and spraying device, a recycling agent metering and adding device, a stirring device and an automatic control device are installed on the frame; the automatic control device is used for controlling the parts; the cold batching device is provided with hoppers; the outlet of the cold batching device is connected with the inlet of the closed drying and heating roller; the outlet of the closed drying and heating roller is connected with the stirring device; the outlets of the asphalt metering and spraying device and the recycling agent metering and adding device are connected with the stirring device; and the closed drying and heating roller is connected with a waste gas treatment device. The vehicle has the following advantages: the heating process is completed in the closed drying and heating roller, therefore the heat loss is lower and the heat efficiency is higher; and in addition, the waste gas treatment device can treat the harmful gases generated in the heating process in a centralized and effective manner, thus reducing the air pollution.

Description

technical field [0001] The invention relates to the field of asphalt pavement maintenance machinery and equipment, in particular to an in-situ thermal regeneration vehicle that can greatly reduce heat energy loss and effectively reduce harmful gas emissions. Background technique [0002] Asphalt pavement has the advantages of stable driving, comfortable, low noise, convenient maintenance and easy recycling. In domestic and foreign highways and urban roads, asphalt pavement is widely used as the main structure type of high-grade pavement. Asphalt pavement regeneration technology can reduce new resources Developing and saving road maintenance cost has significant economic benefits, so it has been used more and more. [0003] The existing hot-in-place recycling vehicles all have a heating unit. During specific operation, firstly, the heating unit directly heats the asphalt pavement, then mills the heated asphalt pavement, and finally mixes and paves the mixture. There are thre...

AI Technical Summary

Problems solved by technology

There are three major problems in the above-mentioned in-situ thermal regeneration vehicle. First, the heating process is carried out in an open environment, which is likely to cause a large amount of heat loss and low thermal efficiency; second, a large amount of harmful gas will be generated during the heating process. The gas is directly discharged into the air without treatment, which will cause serious air pollution; third, the distribution of the hot material is uneven, and the surface pitch is prone to carbonization during the heating process, while the bottom pitch has not been heated to the regeneration temperature.

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