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沥青洒布车洒布不均匀怎么办?

    沥青洒布车是一种黑色路面施工机械,它是公路、城市道路、机场和港口码头建设的主要设备。该设备主要是对不同种类的沥青进行路面喷洒,以满足不同等级路面透层、粘层、上下封层、雾封层等施工需求。


Asphalt distributor is a kind of black road construction machinery. It is the main equipment for highway, urban road, airport and port wharf construction. The equipment is mainly used for spraying different kinds of bituminous pavement to meet the construction requirements of different grades of pavement penetration layer, sticky layer, up and down seal layer, fog seal layer and so on.


然而,市面上有些沥青洒布车洒布效果并不如意,会存在横向洒布不均匀的现象,典型的横向不均匀现象就洒布是出现的横向条纹。这时采取一定措施,可有效改善沥青洒布横向均匀性。


However, the effect of some asphalt sprinkles on the market is not satisfactory, and there will be a phenomenon of uneven distribution of the transverse distribution. At this time, a certain measure is adopted to effectively improve the transverse uniformity of asphalt spreading.



1、改进喷嘴结构
1. Improving the structure of the nozzle


这样做有以下目的:一是为了适应喷洒管的结构,使每个喷嘴的沥青流量分配接近一致;二是为了使单喷嘴的喷洒投影面形状和大小符合设计要求,达到最优,并使区域内沥青流量分布满足设计要求;三是为了适应不同品种的沥青和不同洒布量的施工要求。


In order to adapt to the structure of the spray nozzle, the asphalt flow distribution of each nozzle is close to the same; two is to make the shape and size of the projection surface of the single nozzle meet the design requirements, to achieve the optimum, and to meet the design requirements in the area of the asphalt flow distribution in the region; three in order to adapt to different varieties. Construction requirements of asphalt and different sprinkled quantities.


2、适当提高洒布车速
2. Improve the speed of sprinkling


智能型沥青洒布车车速只要在合理范围内变化,对沥青洒布纵向均匀性无影响。因为当车速较快时,单位时间内洒出沥青量就变大,而单位面积上沥青洒布量仍然保持不变,车速改变对横向均匀性有较大影响。


The speed of intelligent asphalt distributor has no influence on the longitudinal uniformity of asphalt spreading as long as it changes within a reasonable range. Because when the vehicle speed is faster, the amount of asphalt in a unit time becomes larger, and the amount of asphalt spraying on the unit area remains unchanged, and the change of vehicle speed has a great influence on the lateral uniformity.



当车速较快时,单位时间内单喷嘴流量变大,喷洒投影面增大,重叠数增加;同时,射流速度提高,沥青碰撞能量增加,“冲击~飞溅一匀化”作用增强,横向洒布更均匀,所以应适当采用较快车速,使横向均匀性始终保持最佳。


When the speed is faster, the flow rate of single nozzle becomes larger in unit time, the projection surface increases and the overlap number increases; at the same time, the jet speed increases, the asphalt collision energy is increased, the impact to the splash one homogenization is enhanced and the transverse distribution is more uniform, so the faster speed should be adopted to keep the transverse evenness the most. Good.


智能型沥青洒布车,洒布精度高,喷洒量不受车速影响
Intelligent asphalt distributor has high sprinkler precision and no influence on vehicle speed.
3、改善沥青特性

3, improving the characteristics of asphalt


沥青黏度大,则沥青流动阻力大,喷射成形小,重叠数减小。为了克服这些不足,一般做法是加大喷嘴通径,但这样做势必减小了射流速度,弱化了“冲击一飞溅~匀化”作用,使横向洒布不均匀。为了提高沥青施工工艺性能,应改善沥青特性。

When asphalt viscosity is large, the flow resistance of asphalt is large, spray forming is small, and the number of overlaps decreases. In order to overcome these shortcomings, the general approach is to increase the diameter of the nozzle, but this will reduce the velocity of the jet, weaken the impact of a splash to homogenization, and make the transverse distribution uneven. In order to improve the performance of asphalt construction technology, asphalt properties should be improved.


4、使喷洒管离地高度可调,闭环控制

4. To adjust the height of the sprinkler to the ground, closed loop control


由于喷洒扇面角会受到车速、沥青种类、温度、粘度等因素影响,所以离地高度最好根据施工经验确定,并以此作为依据进行调整:
As the spraying fan angle will be influenced by the speed, the kind of asphalt, the temperature and the viscosity, the height of the ground is best determined according to the construction experience and is adjusted as a basis.
喷洒管离地高度太大,会减小沥青喷洒冲击力,弱化“冲击一飞溅~匀化”作用;喷洒管离地高度过低,会减小沥青喷洒扇面重叠数,应根据实际情况调节喷洒管高度以提高沥青喷洒效果。
The height of the spray pipe is too high, which will reduce the impact of the asphalt spray and weaken the impact of a splash to homogenization. The low altitude of the sprinkler tube will reduce the overlap number of the asphalt spray fan surface, and the height of the spray pipe should be adjusted according to the actual conditions to improve the effect of the asphalt spraying.


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