The hot-melt coating needs to be heated to about 180 ℃ before construction. The working principle of the hand push marking is the scratch coating construction. During construction, the solid powder coating is put into the melting kettle, the melting is in the molten flow state, then it is put into the heat preservation melting hopper of the hand push marking car, then the melting coating is introduced into the marking hopper, the heat preservation keeps the material in the molten state. At the beginning of scribing, the scribing bucket shall be placed on the road surface. Because there is a certain gap between the scribing bucket the ground, when the scribing car is pushed, a neat marking line shall be scratched by automatic flowing, which can automatically evenly spread a layer of reflective glass beads on the marking line.
The advantages of hand push hot melt marking machine for highway marking machine are less equipment, long service life, 3 to 5 years, good reflective effect at night, strong anti pollution ability, long-term freshness, good adhesion, excellent wear resistance durability. The construction of hot-melt coating shall be prepared in advance, all necessary on-site safety facilities, tools for repairing marking marking, ash bags for marking standard lines, as well as necessary drawing boards, fonts, etc. shall be prepared.
With the rapid development of national economic construction, the importance of Expressway in transportation has gradually shown. The construction of expressway has increased year by year, road marking is an essential construction process. There are two kinds of hot-melt marking methods in various countries, i.e. fully automatic mechanical marking manual marking. The mechanical full-automatic marking method is suitable for the projects with large working face, simple marking type long line segment; the hand push marking method is suitable for the projects with small working face complex marking type, which is more suitable for the construction of road patching. This paper mainly introduces the equipment configuration, construction process some experience in highway construction.
Construction equipment of hot melt marking
The method of marking construction can be roughly divided into manual marking method mechanical construction method the structure of the drawing car. Manual marking is the most important commonly used construction method of hot-melt marking. The line width of the hand push scribing driver's push scribing car is determined by the width of the coating bucket. The width of the commonly used coating bucket is 100 mm, 150 mm, 200 mm.
Clean contact surface is the premise to ensure that the coating can be firmly combined with the pavement. The purpose of cleaning before coating is to clean the road surface for easy setting out coating. Cleaning the road surface is only to remove the dust on the road surface, but also to pay attention to whether there is moisture whether the road surface is wet. If necessary, gas flame shall be used for heating drying before construction. If there are old lines, they should be removed if necessary to ensure the flatness reflective effect of the markings.
