Asphalt pavement heating milling machine

Abstract

The invention discloses a bituminous pavement heating and milling machine. The heating and milling machine comprises a rack, a walking system, a first pavement heating wall, a second pavement heatingwall, a milling device and a secondary temperature rising heating wall, wherein the walking system is fixed to the lower portion of the rack and comprises a front axle and a rear axle, the first pavement heating wall is hinged to the front end of the rack, the second pavement heating wall is fixed to the rear portion of the front axle, and the milling device is fixed between the second pavement heating wall and the rear axle; the secondary temperature-rising heating wall is hinged to the rear portion of the rear axle and comprises a secondary temperature-rising main heating wall and pavement thermal connection auxiliary heating walls arranged on the two sides of the secondary temperature-rising main heating wall, a secondary temperature-rising channel is formed in the middle of the secondary temperature-rising main heating wall, and multiple sets of scarifying devices are fixed to the bottom of the secondary temperature-rising channel of the secondary temperature-rising main heating wall. The heating and milling machine is provided with a secondary temperature raising device, realizes simultaneous temperature raising inside and outside an asphalt mixture, is energy-saving and efficient and achieves good curve construction and climbing operation adaptability. The machine is environment-friendly and efficient; and the working environment is safer and more comfortable.

Description

technical field [0001] The invention relates to an asphalt pavement heating milling machine, in particular to an asphalt pavement heating milling machine for in-situ thermal regeneration, belonging to the technical field of road maintenance equipment. Background technique [0002] The asphalt pavement heating and milling machine is an important part of the hot-in-place recycling unit. It is usually installed after 2~3 asphalt pavement heating machines. It performs thermal milling on the heated and softened asphalt pavement. After milling, the thickness of the asphalt pavement will be 200mm~ 300mm, temperature 120~130℃ asphalt stockpile, the current heating milling machines on the market have the following defects: [0003] (1) The existing heating milling machine does not have the function of secondary heating of recycled materials. The 120~130°C asphalt pile formed after milling is greatly affected by the construction time and ambient temperature, and the heat loss is rapi...

AI Technical Summary

Problems solved by technology

The 120~130°C asphalt pile formed after milling is greatly affected by the construction time and ambient temperature, and the heat loss is rapid, which often leads to low temperature for subsequent mixing and paving, which affects the regeneration quality;

[0004] (2) Poor adaptability to curve construction and climbing operations

The heated and loose asphalt pavement produces a large amount of water vapor and smoke during milling, which is the most serious link of asphalt fume or dust emission during in-situ thermal regeneration construction. Asphalt fume is discharged unorganized, causing environmental pollution and hot fume leakage. Scorched, polluted green belt vegetation and other issues

At present, there is no special treatment equipment for the above-mentioned high-temperature asphalt fume emission in the heated milling machines on the market

[0006] (4) The driver's operating environment is harsh, causing great bodily injury and no safety guarantee

The construction operation of hot-in-place regeneration is very harsh. Usually, the operating environment temperature is above 40°C, and there are varying degrees of toxic asphalt fumes or dust emissions. The driver is completely exposed to the sun in the open air, high temperature and toxic smoke environment, which is extremely harmful to the driver's body, and there is fatigue operation that leads to driving safety; in-situ thermal regeneration construction is in order to be able to see the road markings and exchange information between the crew , the driver usually uses the rotating seat to turn out or slide the seat out of the car body by more than 0.5 meters, completely suspending the person and the seat above the high-temperature asphalt road, which poses a serious driving safety risk;

[0007] (5) Out of profile, overweight, over limit

The heating and milling machines on the market all use a single set of heating walls. The volume is large, and the furnace diameter and length of the furnace required for the hot blast furnace are also large, resulting in a large overall size, excessive weight, etc., and difficulties in climbing and transitioning.

[0008] The above defects make the heating milling machines on the market unable to meet the requirements of modern asphalt pavement (especially expressway, municipal road) safety maintenance, high standard and high quality maintenance

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