1) Safety measures. After arriving at the construction site, we must first consider the width of the road, traffic and other factors. Make full use of safety facilities such as signs, warning lights, traffic cones, command flags, etc., and provide traffic controllers to manage pedestrians and traffic and try to prevent accidents. Construction personnel should wear work clothes with obvious signs and eye-catching colors. Night construction to have reflectiveClothing and reflective signs to ensure the safety of construction personnel and the project. On-site operators must wear protective equipment (safety helmet, gloves) as required. The hot-melt coating is high-temperature liquid after melting, so it should be strictly prevented from contacting with human body and splashing during transportation.
2. The coating is heated and melted. The finished product of hot melt coating is a solid powder block, which needs to be heated and melted into a liquid with a certain viscosity during construction. The specific operation method is as follows: when the paint is dissolved, it should be heated with a small fire and a small amount of paint should be added. when it starts to melt, the agitator should be started to stir. at the same time, new materials should be continuously added to the kettle, the amount of fire should be increased and stirring should be strengthened until all the paints in the kettle are melted. The heating temperature of the coating should not be too high, and its material tends to deteriorate when heated to above 200 ℃. The main causes of deterioration of the material are thermal decomposition, oxidation, and evaporation. When the yellow paint is heated, it may be discolored due to the poor temperature resistance of the yellow pigment. Therefore, the melt coating to avoid long time high temperature heating, it is best to use the appropriate temperature, short time heating method. However, when the construction needs to wait, the temperature should be cooled, and the temperature should be raised when the coating is carried out. When the pavement temperature is higher than 25 ℃, the coating temperature can be controlled at about 180 ℃; if the pavement temperature is lower than 25 ℃, the coating temperature should be controlled at 190-200 ℃ and can be put into the construction equipment for marking construction.
3, the road surface cleaning. The important condition for the combination of paint and road surface is to keep the contact surface clean. The dust, mud and sand and moisture on the road surface are the main factors for the adhesion of paint. In particular, slow lanes and sidewalks are seriously polluted. Among them, not only the dust on the road surface should be removed, but also attention should be paid to whether moisture exists or whether the road surface is wet. If necessary, gas flame should be heated and dried before construction to ensure the adhesion effect and the smoothness and reflection effect of the marking line.
A, first of all, the section to be marked to protect, so that the marking workers clean the road surface, the whole working section with broom, brush thoroughly clean up, accumulation with shovel.
B, brush off the dust on the road with an iron brush, and then clean the brush.
c. Blow the cleaned road surface 1-2 times with a hair dryer to completely remove the dirt in the road surface gap.
4. Lofting. First of all, traffic management should be done to ensure the safety of lofting operation. Then measure the position of the marking line, and mark the road surface according to the position indicated in the design drawing and the measuring tools and white powder of the figure. After the setting-out is completed, check whether the control meaning contained in the marking pattern can be correctly expressed and whether the driver and pedestrian can be accurately identified. When setting out the marking, the center point of the road shall be measured first, and then the center line shall be determined at intervals of 10-20m. Along the curve section
The radius of curvature sets the center point every 5-15m. When it is confirmed that the set center point connection line matches the curvature, the road centerline profile is drawn by connecting each center point. In this way, check forward in sequence, while continuously extending the center line forward, it is also necessary to continuously check with the set center line position. According to the position of the road center line, mark half the width of the marking line and draw the outline of the width of the marking line for coating operation. For the curve section with small curvature radius, the design and construction of the road alignment must be confirmed to obtain the coordination with the road alignment. The lane dividing line and edge line can be measured according to the center line. Generally, the width of the marking line should also be marked. The setting-out of crosswalks and characters shall be based on the principle of construction drawing design.
5. Apply primer (lower coating agent). In order to improve the adhesion between the road surface and the coating film, the primer (undercoating agent) must be applied on the road surface. Too much or not enough primer coating will reduce the adhesion between the pavement and the film. When applying, use a spraying machine, etc. to adjust the primer to a uniform thickness and then apply it. The primer coating width should be slightly wider than the marking lofting width. After the primer is applied, it shall be cured. When the primer does not stick to the tire, dust and sand, the marking coating operation can be carried out. The curing time shall be determined according to the temperature, humidity, coating amount and coating method.
6. Coating. Coating operation is the most critical step in marking construction and should be strictly controlled according to the operating procedures. Coating operation procedures and precautions:
a. Check the construction machinery before coating to ensure that the equipment is in good condition. Use linoleum and white iron sheet for field test painting in advance, check the color, thickness, width, glass bead spreading amount, etc., and adjust the parameters if necessary; B, marking coating. It should be carried out after the primer solvent is dried, and the marking line should be marked before the primer is dried. The solvent will penetrate the unhardened coating wax and cause bubbles. C, in order to ensure the identification of the night, in the marking coating at the same time to spread glass beads, experience shows that half of the diameter of the glass beads embedded in the coating film reflective effect is best. But it is not easy to do this. The coating temperature is high, the glass beads are spread quickly, and the glass beads will sink into the coating; the coating temperature is low, the glass beads are spread slowly, the coating is close to curing, and the glass beads cannot be on the coating. Good fixation, easy to fall off, poor reflective effect. At the same time, pay attention to the amount of glass beads, spreading evenly and comprehensively. Too much glass beads spread, so that the tone of the day is bad, and produce uneven, but also easy to make dust sticky and reduce the identification.
D, the paint in the marking car should always keep the mixed state;
E, just paved asphalt pavement is easy to cause pollution to the marking, it is best to postpone the construction;
7. Finishing. Trim the marking line that does not meet the requirements, remove the overflowing and hanging coating film, and check the thickness, size and glass
The spreading condition of the beads and the shape of the scribe line, etc. To fix non-compliance
The marking line collects scattered glass beads to prevent vehicles from slipping and pedestrians from slipping. Timely arrange construction machinery, tools, remove construction residues and take photos.
Operation steps of 4. marking car
1. Check: check whether there is any leakage in the gas pipeline, keep the gas pipeline sealed in good condition, and check whether the screws of each connection part are loose and fastened.
Check the hydraulic oil, engine oil and fuel oil and add them in time. The static level of hydraulic oil shall be located in the middle of the filter screen of the oil filler. The static level of engine oil should be located between the upper and lower scales of the oil scale.
2. Debugging: Open the benchmark in front of the car and adjust the benchmark to match
The inside of the hopper is in a straight line. Flexible hopper opening and closing, adjust the knife, so that the coating thickness of 2mm is appropriate. The beading device should be sensitive in operation, and the glass beads should be evenly spread, with a spreading amount of about 0.3kg/m2.
3. Feeding: add the melted coating in the hot melt kettle into the coating barrel, and filter through the filter screen in the coating barrel to prevent impurities from entering. Ignite the ignition gun, turn on the gas switch of the paint barrel, use the ignition gun to ignite the fire head under the paint barrel to heat and insulate the paint, and adjust the gas supply of the gas switch to keep the temperature of the paint in the paint barrel always at the temperature required for construction.
4 Start: Place the travel handle in the middle stop position, and the clutch handle in the separated position;
Turn on the engine fuel tank switch, close the engine choke, and place the engine throttle in the low-to-medium speed position; pull the engine start handle by hand to start the engine; open the engine choke and run the engine at low speed for 3-5 minutes without load; adjust the throttle and place the engine throttle in Low-to-medium speed position.
5. Coating: after setting out, primer coating and drying on the road surface
The coating can be carried out. Use the ignition gun to ignite the front and rear fire nozzles of the hopper and heat the hopper. Open the front post of the car, move the clutch handle plate to the "closed" position, and gently push the walking handle with the left hand to make the post of the marking car travel along the lofting white line. Push forward to move forward, pull backward to move backward. Put the hopper on the road surface, open the valve of the paint barrel to put the paint into the hopper, and be careful not to overflow the hopper when discharging. Press down the hopper handle to open the hopper switch, pull the bead dispenser switch handle to open the bead dispenser switch, and control the marking car to move forward at a constant speed. When the marking car is moving, it is necessary to replenish and discharge the material into the hopper at any time. At the end of the line segment, lift up the hopper handle, hang the hopper on the hopper bracket, and turn off the bead spreader switch. Coating bucket, hopper in the construction should be continuous heating, so that the coating temperature is always maintained at the construction requirements of the temperature.
6. Shutdown: Run out the paint in the barrel as much as possible, turn off the burner and stop heating; place the travel handle in the middle stop position and the clutch handle in the separated position; place the engine throttle in the idle position, and run the engine at low speed without load 1-3 minutes; turn off the engine flameout switch and stop.
4. maintenance
1. After work every day, the paint in the hopper should be cleaned up. Try not to leave too much paint in the paint barrel. It is best to clean up the remaining paint in the barrel. Bearings and rotating parts should be regularly filled with grease and lubricating oil.
2. Replace the hydraulic system oil: The hydraulic oil of the hydraulic system of this marking car recommend uses four-stroke gasoline engine oil. The marking vehicle shall work for every 2000 hours.
Replace the hydraulic system oil once. If the color of the hydraulic oil turns black, replace it immediately. The hydraulic pump of this machine is imported precision parts. The hydraulic oil (engine oil) used should be kept clean and strictly filtered with a filtering accuracy of 40 μm.
3. Change the oil: The engine uses 4-stroke gasoline oil, change the oil in the first month or 20 hours, and then change the oil every 6 months or 100 hours.
4. The engine air filter, spark plug, precipitation cup, etc. are cleaned every 6 months or 100 hours.
The hydraulic oil filter is cleaned every 3 months or 50 hours, and replaced every 6 months or 100 hours.
5. Troubleshooting

Please read this manual carefully, find out the basic principles, combined with their own practical experience, the general fault can be eliminated. Common faults are shown in the following table: