Heating wall for asphalt pavement maintenance vehicle

Abstract

The invention discloses a heating wall for an asphalt pavement maintenance vehicle and belongs to the technical field of asphalt pavement maintenance equipment. The heating wall comprises a variable power combustor, an electric heating filter, an air sieving plate (3), a high-temperature inlet sensor, a combustion chamber, an air conveying channel (6), a high-temperature reflection film, an asbestos board, a high-temperature outlet sensor, a heat exchange bent pipe, a heat-preservation layer, an air returning groove, an air director, a flow equalizing plate, a hot draught fan, an air inlet pipe and an air outlet pipe. According to the heating wall disclosed by the invention, the temperature of a whole heating process is controllable; the power change of the combustor is controlled through the detection by the temperature sensor so that a pavement is prevented from being burnt by over-high pavement temperature and asphalt ageing is avoided; the pavement temperature in the heating process is constant and the heat conduction efficiency is the highest; the temperature gradient of the asphalt pavement from top to bottom is small and the heating is uniform; and fuel is relatively sufficiently combusted, less waste gas is discharged, the economical efficiency of the fuel is relatively good and the construction efficiency is relatively high.

Description

technical field [0001] The invention relates to a heating wall, in particular to a heating wall for an asphalt pavement maintenance vehicle, and belongs to the technical field of asphalt pavement maintenance equipment. Background technique [0002] Asphalt pavement maintenance vehicles are mainly used to repair various diseases such as potholes, cracks, wrapping, gnawing edges, pockmarked surfaces, peeling, looseness, etc. during the use of asphalt pavement. Under the continuous impact of vehicles and the erosion of rain and snow, these diseases will expand rapidly, seriously affecting the normal driving of vehicles. The heating wall of the asphalt pavement maintenance vehicle is a kind of maintenance equipment used to timely repair the damaged parts of the asphalt pavement. It usually uses infrared radiation or hot air heating to heat the asphalt pavement to soften the asphalt pavement, and then carry out two constructions. The process, one is raking and adding new materia...

AI Technical Summary

Problems solved by technology

[0003] Existing heating walls provide heating to the asphalt pavement through the heat generated by fuel combustion. Therefore, in order to promote the complete combustion of fuel oil, the fuel oil must be preheated to an appropriate temperature. If the temperature is too low, the viscosity of the fuel oil is too high. Affect the quality of atomization, make the combustion worse, there will be phenomena such as incomplete combustion, smoke, burnt burner, easy to deposit carbon ash in the convection section; if the temperature is too high, the fuel oil will be overheated, causing the oil to evaporate and flash, which will cause Fuel waste due to pulsating furnace flame or clogging the heat exchanger due to carbon residue accumulating on the coils of the fuel oil heat exchanger

Therefore, during the pavement heating process, the temperature is often uncontrollable, causing the pavement to be scorched and the asphalt to age, or the heating time is too long and the heating depth is not enough, resulting in a large temperature gradient from top to bottom of the heated asphalt pavement.

[0004] Although the Chinese patent CN201010107235.2 discloses a heating wall design with two separate partitions, the overall size of the wall is relatively large and rectangular, and when used for heating small road surface defects, it will cause a large waste of fuel and energy; There is a four-partition asphalt pavement heating system disclosed in Chinese patent CN201310237955.4. Although the partitions on the large wall have been refined and a raking and rotating mechanism has been set up, there are too many partitions, resulting in the joints of each partition The temperature in the area is uneven, or even too low. A raking mechanism is set up to compensate for the lack of heating depth, and the operation of the rotating mechanism is complicated. The road surface disease is completely consistent with each partition of the partition, but it is not easy to achieve

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