Hot air type asphalt pavement heating device for thermal regeneration of old asphalt pavement

Abstract

The invention discloses a hot air type asphalt pavement heating device for thermal regeneration of an old asphalt pavement, which comprises a chassis truck, wherein a hot air generating device is arranged on the chassis truck, and comprises an air heating furnace for heating air to generate hot air, and a bottomless hot air hood is movably arranged below the chassis chuck; a first air outlet holefor conveying the hot air to the ground is formed in the hot air hood, and the air heating furnace supplies the hot air to the first air outlet hole through a hot air conveying pipe; the hot air hoodis peripherally provided with an air shield felt which may be in contact with the ground, and the hot air hood is connected to the air heating furnace through a hot air recovery pipe. The hot air hoodforming a relatively closed space with the pavement is arranged at the bottom of the heating device provided by the invention, and after the hot air generated by the heating device acts on the ground, the hot air can be recovered by the hot air hood, and supplied to the air heating furnace to be reused, thereby effectively improving the utilization efficiency of the hot air and saving energy.

Description

technical field [0001] The invention belongs to asphalt pavement maintenance equipment, in particular to a hot-air type asphalt pavement heating equipment for thermal regeneration of old asphalt pavement. Background technique [0002] The hot-in-place regeneration unit is a construction machine that heats the road surface, loosens it, adds regeneration agent, new asphalt mixture, paves and compacts it to form a new road surface. Most of the hot-in-place regeneration comprehensive equipment remixers in the prior art adopt three methods to heat the road surface. They are infrared radiation heating, microwave heating and hot air circulation heating respectively. Infrared radiation heating has the following defects in use. First, the infrared radiation ability is not strong, the temperature gradient of the road surface is large, and the heating is uneven; second, it is difficult to effectively and timely control the temperature of infrared radiation heating during road surface...

AI Technical Summary

Problems solved by technology

One is that the heating depth is not easy to control, which affects the quality of the pavement after regeneration; the other is that microwave radiation can cause great harm to the human body

Third, the microwave heating components are easily damaged and the cost is high

Hot air circulation heating can greatly improve the shortcomings of the first two heating methods, but the current hot air equipment is generally complex in structure and the utilization rate of hot air is not high, so that the hot air energy cannot be effectively used

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