Hot-melt marking optimal initial retroreflection brightness coefficient design test device and use method thereof

Abstract

The invention provides a hot-melt marking optimal initial retroreflection brightness coefficient design test device and a use method thereof, and belongs to the technical field of road marking construction. Comprising a simulation bin main body, a temperature adjusting part, a track plate, a marking part, a humidity adjusting part, a wind speed control part, a temperature, humidity and wind speed monitor, a marking and marking area, a surface scattering glass bead embedding degree observation part, a surface scattering glass bead scattering density observation part, a retroreflection brightness coefficient detection part, a tire sticking prevention time detection part and a hot melting coating heating part, a molten coating introduction part; and a data display and processing part. According to the invention, road marking, non-sticking time test and retroreflection brightness coefficient test are integrated, the influence of marking environment on retroreflection brightness coefficient and non-sticking time is comprehensively simulated, and the method can be used as a basis for marking construction parameter selection.

Description

Technical Field

[0001] The invention relates to the technical field of road marking construction, and in particular to a design test device for an optimal initial retro-reflective brightness coefficient of a hot-melt type marking and a use method thereof. Background Art

[0002] Traffic markings guide vehicles to merge and diverge, improve traffic conditions, increase traffic capacity, and reduce traffic accidents, so they are called lifelines. Related research shows that: increasing the road surface retroreflective brightness coefficient (200-300) cd·lx -1 ·m -2 , which can effectively reduce the accident probability by about (11-24)%, and the benefit-cost ratio of road signs and markings is 22.4, making it one of the most economical and effective measures to improve road safety.

[0003] However, the current retro-reflective brightness coefficient of hot-melt road markings is low, and it decays rapidly during the subsequent traffic process. Therefore, the hot-melt road markings applied on national and provincial trunk roads still require a lot of rework before delivery. The main reason for this problem is improper construction methods and poor quality of raw materials. The current standard "Technical Specifications for Construction of Highway Traffic Safety Facilities" (JTG / T3671-2021) does not provide detailed instructions on the construction of hot-melt road markings, which makes it impossible for technical management personnel to control the key technical points in the construction, resulting in the low initial retro-reflective brightness coefficient of the applied road markings and poor durability.

[0004] At present, the research on the initial retroreflective brightness coefficient of hot melt road marking mainly monitors whether the heating temperature of the coating and the amount of glass beads spread are within the design range. Both belong to the control during the construction process, and the construction parameters are not adjusted before the construction operation according to the factors such as the raw materials used and the construction environment. For example, the patent with the announcement number CN 109629392 A discloses an intelligent monitoring system for hot melt road marking machines, and the patent with the announcement number CN 110004813 A discloses a hot melt road marking machine with intelligent monitoring function. Both monitor whether the heating temperature of the coating and the amount of glass beads spread are within the design range, and the optimal parameters are not obtained. Therefore, it is necessary to design a design test device for the optimal initial retroreflective brightness coefficient of hot melt road markings and its use method. Summary of the invention

[0005] The purpose of the present invention is to provide a design test device for the optimal initial retroreflective brightness coefficient of a thermoplastic road marking and a method for using the same, so as to solve the technical problem that the existing thermoplastic road marking cannot obtain the optimal construction parameters.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] The test device for designing the optimal initial retro-reflective brightness coefficient of hot-melt type road marking comprises a simulation chamber main body, a temperature regulating part, a rutting plate, a marking part, a humidity regulating part, a wind speed control part, a temperature, humidity and wind speed monitor, a marking line marking area, a surface-scattered glass bead embedding degree observation part, a surface-scattered glass bead spreading density observation part, a retro-reflective brightness coefficient detection part, a tire-free time detection part, a hot-melt paint heating part, a molten paint introduction part and a data display and processing part. The temperature regulating part, the rutting plate, the marking part, the humidity regulating part, the wind speed control part and the temperature, humidity and wind speed monitor are all arranged inside the simulation chamber main body. The marking line marking area is arranged at the upper end of the rutting plate. The glass bead embedding degree observation part is arranged on the side of the rutting plate, the surface-scattered glass bead spreading density observation part, the retroreflection brightness coefficient detection part and the tire-free time detection part are arranged on the upper end of the rutting plate, and the tire-free time detection part is arranged on the rear end of the marking part, the hot-melt coating heating part is arranged on the upper end of the rutting plate through the molten coating inlet part, and the data display and processing part is respectively connected with the temperature regulating part, the marking part, the humidity regulating part, the wind speed control part, the temperature, humidity and wind speed monitor, the marking line marking area, the surface-scattered glass bead embedding degree observation part, the surface-scattered glass bead spreading density observation part, the retroreflection brightness coefficient detection part, the tire-free time detection part and the hot-melt coating heating part.

[0008] Furthermore, the simulation warehouse main body includes a mobile box, universal wheels, a handrail, an openable door, a third sliding guide rail and a fully automatic opening and closing door. The universal wheels are arranged at the bottom of the mobile box, the handrail is arranged at the rear end of the mobile box, the openable door is arranged on the side of the mobile box, the third sliding guide rail is arranged at the front end of the bottom of the mobile box, and the fully automatic opening and closing door is arranged at the front end of the mobile box.

[0009] Furthermore, the marking part includes a marking head, a first layer glass bead spreading head, a second layer glass bead spreading head, a fixing rod, a sliding end, a first sliding guide rail and a function control end, the sliding end is arranged on the inner end of the first sliding guide rail, the marking head, the first layer glass bead spreading head and the second layer glass bead spreading head are all arranged on the sliding end, and the function control end is arranged on the first sliding guide rail.

[0010] Furthermore, the surface-spreading glass bead density observation unit is used to observe the density of the glass beads spread on the hot-melt road marking paint. The surface-spreading glass bead density observation unit takes pictures and stores them, and transmits the pictures to the data display and processing unit for processing, so as to obtain the surface-spreading glass bead density.

[0011] The surface density is: S0=dl, d is the width of the imaging area, l is the length of the imaging area, S0 is the area of ​​the imaging area, S i is the projection area of ​​the glass beads sprinkled on the i-th surface directly below, It is the sum of the projection areas of n surface-scattered glass beads within the camera area. The projection area of ​​the surface-scattered glass beads can be obtained by the image recognition software through the difference between the chromaticity performance of the glass beads and the chromaticity performance of the coating. The density observation part of the surface-scattered glass beads needs to remain stable without vertical or horizontal displacement, and the camera area is a constant.

[0012] Furthermore, the retroreflective brightness coefficient detection part includes a retroreflective brightness coefficient detection head, a vertical telescopic part, a first vertical fixed rod and a sliding guide rail terminal. The retroreflective brightness coefficient detection head is suspended at the bottom of the vertical telescopic part, the upper end of the vertical telescopic part is arranged on the first sliding guide rail via the first vertical fixed rod, the sliding guide rail terminal is arranged at the outer end of the first sliding guide rail, and the sliding guide rail terminal and the vertical telescopic part are both controlled and connected to the function control end.

[0013] Furthermore, the tire-free time detection part includes a rolling wheel, a handle holder, a sliding end, a vertical telescopic part, a second sliding guide rail, a rolling wheel control end, a second vertical fixed rod and cotton cloth with acetone, the rolling wheel is arranged on the handle holder, the upper end of the handle holder is connected to the bottom end of the vertical telescopic part, the upper end of the vertical telescopic part is connected to the second sliding guide rail via the second vertical fixed rod, the sliding end is arranged at one end of the second sliding guide rail, the rolling wheel control end is arranged at the other end of the second sliding guide rail, and the cotton cloth with acetone is arranged at the rear end of the rutting plate.

[0014] The method for using the test device for designing the optimal initial retroreflective brightness coefficient of hot melt type road markings comprises the following steps:

[0015] (1) Collect the construction environment factors that need to be simulated, including temperature, humidity, wind speed, wind direction at different times, as well as construction raw materials, hot-melt road marking paint, glass beads, the amount of surface-sprinkled glass beads and the parameters of the heating temperature of the paint in the design documents;

[0016] (2) Open the box door, check the components, close the marking blade, the first layer glass bead spreading head and the second layer glass bead spreading head, add appropriate amount of glass beads to the first layer glass bead spreading head and the second layer glass bead spreading head, and add water to the water tank;

[0017] (3) Add the paint to the paint heating container, turn on the paint heating unit and the stirring unit, heat the paint to a molten state, use the temperature monitoring unit to monitor the paint temperature, and make the paint heating temperature reach the design requirement range. At the same time, turn on the power, turn on and set the operating system, temperature controller, and air compressor. If the construction environment temperature is lower than the indoor temperature, turn on the air compressor, turn on the humidity controller, blower, wind direction regulator, turn on the temperature, humidity, and wind speed monitor, and keep it for a certain period of time to make the temperature, humidity, and wind speed in the simulation chamber basically balanced;

[0018] (4) Observe the temperature, humidity, wind speed and wind direction of the simulation chamber on the display screen to ensure that the environmental factors in the simulation chamber are basically consistent with those on the construction site. If they are not consistent, make appropriate adjustments;

[0019] (5) The movable opening control end is pressed down for the first time to open the movable opening, and the molten marking paint flows through the impurity filter screen, filters the impurities, and then flows into the marking cutter head through the paint guide groove;

[0020] (6) The operating system selects the function control terminal according to the preset program, selects the marking function only, the marking blade is turned on, the first layer glass bead spreading head and the second layer glass bead spreading head are not turned on, and marking is performed according to the preset program;

[0021] (7) After the coating is formed, the operating system starts timing. After 3 minutes, the non-stick test program is selected in the operating system, and the rolling wheel rolls for 1 second according to the preset direction, weight, and rolling length. The tire of the measuring instrument is visually inspected to see if there is any sample sticking. If there is any sample sticking, the cotton cloth wiping function of the rolling wheel is activated. The rolling wheel moves horizontally and vertically to the cotton cloth with acetone for friction. Thereafter, the test is repeated every 30 seconds until the tire is no longer sticky to the sample. The operating system stops timing, and the time is the non-stick tire drying time.

[0022] (8) Pressing the movable opening control end downward for the second time causes the movable opening to open, and the molten marking paint flows through the impurity filter screen, filters the impurities, and then flows into the marking cutter head through the paint guide groove;

[0023] (9) The operating system selects the function control terminal according to the preset program, selects the marking function, turns on the marking blade, the first layer glass bead spreading head and the second layer glass bead spreading head, and performs marking according to the preset program;

[0024] (10) The obtained tire-free time is used to maintain the marking line. The operating system selects the function control terminal, selects the retroreflective brightness coefficient detection function, and the fully automatic switch door is turned on. The retroreflective brightness coefficient detection head detects the retroreflective brightness coefficient of the dried hot-melt type marking line and announces the detection result by voice, and reports whether it is qualified according to the set procedure;

[0025] (11) If qualified, the first simulation ends and the simulation test is repeated three times. If the retroreflective brightness coefficients are all qualified, it is proved that under the environmental factors, the use of this material and construction parameters can make the initial retroreflective brightness coefficient of this type of hot melt road marking qualified;

[0026] (12) If the test result is unqualified, adjust the angle adjustment knob of the camera and observe whether the embedding degree of the glass beads on the marking surface on the display screen is between 50% and 67%.

[0027] Furthermore, in step (11), if the embedding degree of the marking line is qualified, it proves that the heating temperature of the paint is appropriate, and it is necessary to open the surface-scattered glass bead observation part through the operating system, and obtain the scattering density of the surface-scattered glass beads through taking pictures, image processing, and data analysis. According to the test results of the retroreflective brightness coefficient, its density is appropriately adjusted to carry out the next simulation test.

[0028] Furthermore, in step (12), if the embedding degree of the marking line is not up to standard, it proves that the heating temperature of the paint is not appropriate, and it is necessary to determine whether the embedding degree is too deep or too shallow. If the embedding degree is too deep, the heating temperature of the paint is appropriately reduced; if the embedding degree is too shallow, the heating temperature of the paint is appropriately increased, and the next set of simulation tests is carried out.

[0029] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0030] The present invention integrates road marking, tire-free time test and retroreflective brightness coefficient test, and relatively comprehensively simulates the influence of marking environment on its retroreflective brightness coefficient and tire-free time, and can be used as the basis for selecting marking construction parameters and a direct method for construction material detection. By adding a surface-scattered glass bead embedding degree observation part and a surface-scattered glass bead spreading density observation part, a set of hot-melt marking construction methods based on coating heating temperature and surface-scattered glass bead density are formed. The device can study the influence of construction materials and environmental factors on the retroreflective brightness coefficient and tire-free time of the marking. The large database composed of the test results can be used as a guide for marking construction. When only the hot-melt coating heating part and the molten coating introduction part are used, it can be used as a coating premixed glass bead observation test device to observe the content of premixed glass beads in the coating in advance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the device for implementing the method of the present invention;

[0032] Figure 2 It is a schematic diagram of the working process of the test device of the present invention;

[0033] Figure 3 It is a diagram showing the appropriate results of the embedding degree, observation angle and observation range of the hot melt type marking of the present invention;

[0034] Figure 4 This is a result diagram of the inappropriate embedding degree and observation angle of the hot melt type marking of the present invention;

[0035] Figure 5 This is a result diagram of the thermoplastic marking line embedding degree observation range being too large;

[0036] Figure 6 This is a result diagram of the hot melt type marking surface with too high a density of glass beads;

[0037] Figure 7This is a result diagram of the present invention using a paint block to observe the paint premixed glass beads.

[0038] In the attached figure, 1-simulation bin body, 1.1 mobile box, 1.2 universal wheel, 1.3 handrail, 1.4 openable box door, 1.5 third sliding guide rail, 1.6 fully automatic door opening and closing, 2-temperature adjustment part, 2.1 temperature controller, 2.2 heating pipe, 2.3 conduit, 2.4 air compressor, 3-rutting plate, 4-marking part, 4.1 marking knife head, 4.2 first layer of glass bead spreading head, 4.3 second layer of glass bead spreading head head, 4.4 fixed rod, 4.5 sliding end, 4.6 first sliding guide rail, 4.7 function control end, 5-humidity adjustment unit, 5.1 water tank, 5.2 water pipe, 5.3 humidity controller, 5.4 humidification nozzle, 6-wind speed control unit, 6.1 blower, 6.2 wind direction regulator, 7-temperature, humidity and wind speed monitor, 8-marking line area, 9-surface glass bead embedding degree observation unit, 10-surface glass bead spreading density observation unit, 11 -Retroreflective brightness coefficient detection unit, 11.1 Retroreflective brightness coefficient detection head, 11.2 vertical telescopic unit, 11.3 first vertical fixed rod, 11.4 sliding guide rail terminal, 12-non-stick time detection unit, 12.1 rolling wheel, 12.2 handle holder, 12.3 sliding end, 12.4 vertical telescopic unit, 12.5 second sliding guide rail, 12.6 rolling wheel control end, 12.7 second vertical fixed rod, 13-hot melt paint heating unit, 13.1 fixed base, 13.2 vertical pole, 13.3 vertical pole height adjuster, 13.4 movable opening control end, 13.5 stirring unit, 13.6 temperature monitoring unit, 13.7 paint heating unit, 13.8 paint heating container, 13.9 movable opening, 14-molten paint introduction unit, 15-data display and processing unit, 15.1 display screen, 15.2 operating system, 15.3 data processor, 16-external power supply. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0040] like Figure 1As shown, the design test device for the optimal initial retroreflective brightness coefficient of hot-melt type marking includes a simulation chamber body 1, a temperature regulating part 2, a rutting plate 3, a marking part 4, a humidity regulating part 5, a wind speed control part 6, a temperature, humidity and wind speed monitor 7, a marking line marking area 8, a surface-sprinkled glass bead embedding degree observation part 9, a surface-sprinkled glass bead spreading density observation part 10, a retroreflective brightness coefficient detection part 11, a tire-free time detection part 12, a hot-melt coating heating part 13, a molten coating introduction part 14 and a data display and processing part 15. The temperature regulating part 2, the rutting plate 3, the marking part 4, the humidity regulating part 5, the wind speed control part 6 and the temperature, humidity and wind speed monitor 7 are all arranged inside the simulation chamber body 1, the marking line marking area 8 is arranged at the upper end of the rutting plate 3, and the surface-sprinkled glass bead embedding degree observation part 9, the surface-sprinkled glass bead spreading density observation part 10, the retroreflective brightness coefficient detection part 11, the tire-free time detection part 12, the hot-melt coating heating part 13, the molten coating introduction part 14 and the data display and processing part 15. The temperature regulating part 2, the rutting plate 3, the marking part 4, the humidity regulating part 5, the wind speed control part 6 and the temperature, humidity and wind speed monitor 7 are all arranged inside the simulation chamber body 1, the marking line marking area 8 is arranged at the upper end of the rutting plate 3, and the surface-sprinkled glass bead The bead embedding degree observation part 9 is arranged on the side of the rutting plate 3, the surface-scattered glass bead spreading density observation part 10, the retroreflective brightness coefficient detection part 11 and the tire-free time detection part 12 are arranged on the upper end of the rutting plate 3, and the tire-free time detection part 12 is arranged at the rear end of the marking part 4, the hot-melt coating heating part 13 is arranged on the upper end of the rutting plate 3 through the molten coating introduction part 14, and the data display and processing part 15 is respectively connected with the temperature regulating part 2, the marking part 4, the humidity regulating part 5, the wind speed control part 6, the temperature, humidity and wind speed monitor 7, the marking line marking area 8, the surface-scattered glass bead embedding degree observation part 9, the surface-scattered glass bead spreading density observation part 10, the retroreflective brightness coefficient detection part 11, the tire-free time detection part 12 and the hot-melt coating heating part 13.

[0041] In an embodiment of the present invention, the simulation warehouse body 1 includes a mobile box 1.1, universal wheels 1.2, handrails 1.3, an openable door 1.4, a third sliding guide rail 1.5 and a fully automatic opening and closing door 1.6. The universal wheels 1.2 are arranged at the bottom of the mobile box 1.1, the handrails 1.3 are arranged at the rear end of the mobile box 1.1, the openable door 1.4 is arranged on the side of the mobile box 1.1, the third sliding guide rail 1.5 is arranged at the front end of the bottom of the mobile box 1.1, and the fully automatic opening and closing door 1.6 is arranged at the front end of the mobile box 1.1.

[0042] The simulation warehouse body 1 includes a mobile box 1.1, universal wheels 1.2, a handrail 1.3, an openable door 1.4, a third sliding guide rail 1.5, and a fully automatic opening and closing door 1.6. The mobile box 1.1 is used as the simulation warehouse body to store and fix various components. Its size is not specifically limited. The mobile box is required to be a transparent box to facilitate observation of the test status; the universal wheels are the moving parts of the mobile box, and the device can achieve mobile operation through an external power supply 16; the handrail 1.3 can move the simulation warehouse and control the direction; the openable door 1.4 It is used to adjust and check the use status of each component in the simulation warehouse, so as to facilitate the addition of different surface-sprinkling glass beads when adding the first-layer surface-sprinkling glass bead spreading head 4.2 and the second-layer surface-sprinkling glass bead spreading head 4.3; the third guide rail 1.5 is used as a movable carrier for the fully automatic opening and closing of the door; the fully automatic opening and closing of the door 1.6 can be controlled by the operating system 15.2. When it is opened, the retro-reflective brightness coefficient detection head 11.1 enters the simulation warehouse for marking detection. After the detection is completed, the retro-reflective brightness coefficient detection head 11.1 slides out of the simulation warehouse, and the fully automatic opening and closing of the door is closed.

[0043] The temperature regulating part 2 includes a temperature controller 2.1, a heating tube 2.2, a conduit 2.3, and an air compressor 2.4. The function of this part is to simulate the ambient temperature of the marking line at the construction site. The temperature controller 2.1 heats the heating tube through the conduit through the continuous external power supply 16, thereby controlling the temperature in the simulation chamber. The heating tube 2.2 adopts a spiral nickel-chromium heating wire, which has the characteristics of temperature balance and sensitive temperature control. The conduit 2.3 is used to place the wire required for the temperature controller to connect with the heating tube. The air compressor 2.4 is used to reduce the temperature in the simulation chamber, and it is electrically connected to the external power supply 16 through the wire. Because the marking line construction temperature should not be lower than the minimum construction temperature required by the product, and should not be less than 5°C, should not be lower than 10°C, and should not be higher than 32°C, and should not be higher than 45°C, the simulated temperature range in the simulation chamber is 0°C~50°C, (0~5)°C and (45~50)°C are extreme weather simulation temperatures, which are usually not used.

[0044] The rutting plate 3 is made by wheel rolling, and its material is asphalt mixture, and its gradation is the gradation of asphalt mixture of the upper layer of the asphalt pavement to be simulated, and its size is 300mmx300 mmx50mm. Its function is to provide a carrier for hot melt marking.

[0045] In the embodiment of the present invention, the marking portion 4 includes a marking blade head 4.1, a first layer glass bead spreading head 4.2, a second layer glass bead spreading head 4.3, a fixing rod 4.4, a sliding end 4.5, a first sliding guide rail 4.6 and a function control end 4.7. The sliding end 4.5 is arranged on the inner end of the first sliding guide rail 4.6, the marking blade head 4.1, the first layer glass bead spreading head 4.2 and the second layer glass bead spreading head 4.3 are all arranged on the sliding end 4.5, and the function control end 4.7 is arranged on the first sliding guide rail 4.6.

[0046] The marking part 4 includes a marking blade 4.1, a first-layer glass bead spreading head 4.2, a second-layer glass bead spreading head 4.3, a fixing rod 4.4, a sliding end 4.5, a first sliding guide rail 4.6, and a function control end 4.7. Among them, the width of the marking blade 4.1 is selected to be the width of the sample in the non-stick tire test of 80mm, and the blade can be loaded with a proper amount of heated and melted paint from the paint heating container 13.8. The first-layer glass bead spreading head 4.2 is loaded with a proper amount of glass beads with larger particle size, and the type and amount of glass beads added need to be consistent with the construction design documents required for simulation; the second-layer glass bead spreading head 4.3 is loaded with a proper amount of glass beads with smaller particle size, and the type and amount of glass beads added need to be consistent with the construction design documents required for simulation; the glass beads in the two glass bead spreading heads fall by gravity without applying pressure. The fixed rod 4.4 connects the sliding ends of 4.1, 4.2, 4.3 and 4.5, and is a rigid bracket. The angle and distance of each sliding rod remain unchanged. The sliding end 4.5 is the connection point between the fixed rod 4.4 and the first sliding guide rail 4.6, which can realize the movement of 4.1, 4.2, and 4.3 along the direction of the sliding guide rail. The first sliding guide rail 4.6 provides a mobile carrier for the sliding end. The functional control end 4.7 can control the use status of the retroreflective brightness coefficient detection head 11.1 and the marking part. It includes the horizontal and vertical displacement and use status (open, pause, end) of the retroreflective brightness coefficient detection head 11.1, and the opening, closing, movement, and pause of the 4.1, 4.2, and 4.3 of the marking part 4. It can realize the movement of the sliding end along the sliding guide rail at a set speed of (3-8) km / h. The specific moving speed is consistent with the marking speed of the required simulated marking line, and ensures that the marking line thickness meets the design requirements. The functional control end 4.7 is ultimately controlled by the computer end 15.2 through an electrical connection.

[0047] The humidity adjustment unit 5 includes a water tank 5.1, a water pipe 5.2, a humidity controller 5.3, and a humidifying nozzle 5.4. A proper amount of water is stored in the water tank 5.1 as a humidity source for the marking construction site. The water pipe 5.2 is used to connect the water tank and the humidity controller. The humidity controller 5.3 is used to adjust the humidity of the construction site to be simulated. The humidifying nozzle 5.4 is used to humidify the environment in the simulation chamber.

[0048] The wind speed control unit 6 includes a blower 6.1 and a wind direction regulator 6.2. The blower 6.1 is used as the wind source in the simulation chamber. After being connected to an external power supply, it can simulate the wind force at the construction site. The specific wind speed is achieved by the gear position of the blower. The wind force should be consistent with the required simulated marking environment, and the wind speed should not be too high.

[0049] The temperature, humidity and wind speed monitor 7 can monitor the temperature, humidity and wind speed in the simulation chamber by connecting to an external power supply.

[0050] The marking area 8 is located in the middle of the rutting plate, 75mm away from the length direction of the rutting plate (300mm), and 110mm away from the length direction of the rutting plate (300mm). The marking area is 150mm long, 80mm wide, and covers an area of ​​12000mm. 2 Its size and area are consistent with the test area required for the hot-melt type marking non-stick test.

[0051] The embedding degree observation part of the surface-scattered glass beads 9 includes a camera bracket 9.1, a camera 9.2, and an angle adjustment knob 9.3, which are placed on one side of the length direction of the marking line area. The camera bracket 9.1 is used to support the camera and adjust its height to be consistent with the height of the rutting plate. The camera 9.2 can be used to record the embedding degree of the surface-scattered glass beads at different times. The angle adjustment knob 9.3 can be used to adjust the camera angle on the bracket to find the best camera angle. The best camera angle should make the glass beads embedding degree observation clearer.

[0052] In the embodiment of the present invention, the surface spreading glass bead density observation unit 10 is used to observe the density of glass beads spread on the hot melt road marking paint. The surface spreading glass bead density observation unit 10 takes pictures and stores them, and transmits the pictures to the data display and processing unit 15 for processing, so as to obtain the surface spreading glass bead density; wherein the surface spreading density is: S0=dl, d is the width of the imaging area, l is the length of the imaging area, S0 is the area of ​​the imaging area, S i is the projection area of ​​the glass beads sprinkled on the i-th surface directly below, It is the sum of the projection areas of n surface-scattered glass beads within the camera area. The projection area of ​​the surface-scattered glass beads can be obtained by the image recognition software through the difference between the chromaticity performance of the glass beads and the chromaticity performance of the coating. The density observation part of the surface-scattered glass beads needs to remain stable without vertical or horizontal displacement, and the camera area is a constant.

[0053] The retroreflective brightness coefficient detection unit 11 includes a retroreflective brightness coefficient detection head 11.1, a vertical telescopic unit 11.2, a first vertical fixed rod 11.3, a first sliding guide rail 4.6, a functional control terminal 4.7, and a sliding guide rail terminal 11.4. The retroreflective brightness coefficient detection head 11.1 is used to detect and broadcast the hot-melt type marking line after maintenance and molding. The component is configured as a detachable component, which is convenient for calibration and maintenance, and the detection data is accurate, stable, and regularly checked. The vertical telescopic unit 11.2 is used to control the rise and fall of the retroreflective brightness coefficient detection head 11.1, and can adjust the vertical position of the retroreflective brightness coefficient detection head 11.1. The first vertical fixed rod 11.3 is used to connect the retroreflective brightness coefficient detection head 11.1 and the first sliding guide rail 4.6. The first sliding guide rail 4.6 is a mobile carrier at the sliding end, and can adjust the horizontal position of the retroreflective brightness coefficient detection head 11.1. The function control terminal 4.7 can control the use status of the retroreflective brightness coefficient detection head 11.1 and the marking part, including the horizontal and vertical displacement and use status (open, pause, end) of the retroreflective brightness coefficient detection head 11.1, and the opening, closing, movement, and pause of 4.1, 4.2, and 4.3 of the marking part 4. The function control terminal 4.7 is ultimately controlled by the operating system 15.2 through electrical connection. The sliding rail terminal 11.4 is used to limit the maximum horizontal displacement of the first vertical fixed rod and the second vertical fixed rod.

[0054] The hot melt paint heating part 13 includes a fixed base 13.1, a vertical pole 13.2, a vertical pole height adjuster 13.3, a movable opening control end 13.4, a stirring part 13.5, a temperature monitoring part 13.6, a paint heating part 13.7, a paint heating container 13.8, and a movable opening 13.9. The base 13.1 has a certain mass, and stability must be ensured when the paint is stirred. The vertical pole 13.2 serves as a vertical support for erecting and fixing the stirring part 13.5, and should have a certain rigidity, strength and stability. The vertical pole 13.3 height adjuster can adjust the vertical position of the stirring head of the stirring part 13.5 in the paint heating container 13.8. The movable opening control end 13.4 is used to control the closing and opening of the movable opening 13.9. The stirring part 13.5 can stir the hot melt paint evenly to stabilize its performance. The temperature monitoring part 13.6 can continuously and accurately monitor the heating temperature of the paint. This part is inserted into the paint part, evenly distributed, and can accurately monitor. The final value is displayed on the outside of the paint heating container 13.8 for easy observation. The paint heating part 13.7 generates heat by connecting an external power supply to heat the paint. The paint heating container 13.8 is a semi-closed container that can remove gas during the paint heating process and ensure that the paint temperature rises and is relatively stable. The function of the movable opening 13.9 is to control the flow of molten marking paint. When closed, the molten paint does not flow out of the movable opening, and when opened, the molten paint flows out of the movable opening.

[0055] The molten paint inlet 14 includes an impurity filter 14.1 and a paint guide 14.2. The impurity filter 14.1 is provided with a filter of appropriate mesh size to ensure that the molten paint can flow faster and block impurity particles in the paint. The paint guide 14.2 is used to convey the molten paint into the scribing blade 4.1 so that it is not affected by the external environment and wind speed.

[0056] The data display and processing unit 15 includes a display screen 15.1, an operating system 15.2, and a data processor 15.3. The display screen 15.1 can display the temperature and humidity in the simulation chamber, wind speed, images from different camera angles, surface scattering glass beads observation pictures, and effective surface scattering density. The operating system 15.2 can adjust the function control terminal 4.7, the rolling wheel control terminal 12.6, and the angle adjustment knob 9.3. The data processor 15.3 can process the surface scattering glass beads density in the photos taken by the surface scattering glass beads scattering density observation unit 10. The external power supply 16 is used to provide power supply for relevant components inside and outside the simulation chamber.

[0057] In an embodiment of the present invention, the retroreflective brightness coefficient detection part 11 includes a retroreflective brightness coefficient detection head 11.1, a vertical telescopic part 11.2, a first vertical fixed rod 11.3 and a sliding guide rail terminal 11.4. The retroreflective brightness coefficient detection head 11.1 is suspended at the bottom of the vertical telescopic part 11.2. The upper end of the vertical telescopic part 11.2 is arranged on the first sliding guide rail 4.6 via the first vertical fixed rod 11.3. The sliding guide rail terminal 11.4 is arranged at the outer end of the first sliding guide rail 4.6. The sliding guide rail terminal 11.4 and the vertical telescopic part 11.2 are both controlled and connected to the function control terminal 4.7.

[0058] In the embodiment of the present invention, the tire-free time detection part 12 includes a rolling wheel 12.1, a handle holder 12.2, a sliding end 12.3, a vertical telescopic part 12.4, a second sliding guide rail 12.5, a rolling wheel control end 12.6, a second vertical fixed rod 12.7 and a cotton cloth with acetone 12.8. The rolling wheel 12.1 is arranged on the handle holder 12.2, the upper end of the handle holder 12.2 is connected to the bottom end of the vertical telescopic part 12.4, the upper end of the vertical telescopic part 12.4 is connected to the second sliding guide rail 12.5 via the second vertical fixed rod 12.7, the sliding end 12.3 is arranged at one end of the second sliding guide rail 12.5, the rolling wheel control end 12.6 is arranged at the other end of the second sliding guide rail 12.5, and the cotton cloth with acetone 12.8 is arranged at the rear end of the rutting plate 3.

[0059] The tire-free time detection unit 12 includes a rolling wheel 12.1, a handle 12.2, a sliding end 12.3, a vertical telescopic unit 12.4, a second sliding guide rail 12.5, a rolling wheel control end 12.6, a second vertical fixed rod 12.7, and a cotton cloth with acetone 12.8. The size, quality, and method for testing the tire-free time of the rolling wheel 12.1 are consistent with those in "Road Marking Paint" (JT / T 280-2022). The handle 12.2 is used to fix the direction of the rolling wheel. The sliding end 12.3 can slide on the second sliding guide rail 12.5 to change the horizontal displacement of the rolling wheel 12.1. The vertical telescopic unit 12.4 is used to control the rise and fall of the rolling wheel 12.1, and can adjust the vertical position of the rolling wheel 12.1. The second sliding guide rail 12.5 is a mobile carrier for the rolling wheel sliding end 12.1. The rolling wheel control terminal 12.6 can control the use state of the rolling wheel 12.1, including the horizontal and vertical displacements of the rolling wheel 12.1 and the use state (start, pause, end). The rolling wheel control terminal 12.6 is ultimately controlled by the computer terminal 15.2 through electrical connection. The second vertical fixed rod 12.7 is used to connect the handle 12.2 and the second sliding guide rail 12.5. The cotton cloth 12.8 with acetone is used to wipe the hot melt marking paint on the rolling wheel 12.1.

[0060] like Figure 2 As shown, the method for using the test device for designing the optimal initial retroreflective brightness coefficient of hot melt type road markings includes the following steps:

[0061] (1) Collect the construction environment factors that need to be simulated, including temperature, humidity, wind speed, wind direction at different times, as well as construction raw materials, hot-melt road marking paint, glass beads, the amount of surface-sprinkled glass beads and the parameters of the heating temperature of the paint in the design documents;

[0062] (2) Open the box door, check the components, close the marking blade, the first layer glass bead spreading head and the second layer glass bead spreading head, add appropriate amount of glass beads to the first layer glass bead spreading head and the second layer glass bead spreading head, and add water to the water tank;

[0063] (3) Add the paint to the paint heating container, turn on the paint heating unit and the stirring unit, heat the paint to a molten state, use the temperature monitoring unit to monitor the paint temperature, and make the paint heating temperature reach the design requirement range. At the same time, turn on the power, turn on and set the operating system, temperature controller, and air compressor. If the construction environment temperature is lower than the indoor temperature, turn on the air compressor, turn on the humidity controller, blower, wind direction regulator, turn on the temperature, humidity, and wind speed monitor, and keep it for a certain period of time to make the temperature, humidity, and wind speed in the simulation chamber basically balanced;

[0064] (4) Observe the temperature, humidity, wind speed and wind direction of the simulation chamber on the display screen to ensure that the environmental factors in the simulation chamber are basically consistent with those on the construction site. If they are not consistent, make appropriate adjustments;

[0065] (5) The movable opening control end is pressed down for the first time to open the movable opening, and the molten marking paint flows through the impurity filter screen, filters the impurities, and then flows into the marking cutter head through the paint guide groove;

[0066] (6) The operating system selects the function control terminal according to the preset program, selects the marking function only, the marking blade is turned on, the first layer glass bead spreading head and the second layer glass bead spreading head are not turned on, and marking is performed according to the preset program;

[0067] (7) After the coating is formed, the operating system starts timing. After 3 minutes, the non-stick test program is selected in the operating system, and the rolling wheel rolls for 1 second according to the preset direction, weight, and rolling length. The tire of the measuring instrument is visually inspected to see if there is any sample sticking. If there is any sample sticking, the cotton cloth wiping function of the rolling wheel is activated. The rolling wheel moves horizontally and vertically to the cotton cloth with acetone for friction. Thereafter, the test is repeated every 30 seconds until the tire is no longer sticky to the sample. The operating system stops timing, and the time is the non-stick tire drying time.

[0068] (8) Pressing the movable opening control end downward for the second time causes the movable opening to open, and the molten marking paint flows through the impurity filter screen, filters the impurities, and then flows into the marking cutter head through the paint guide groove;

[0069] (9) The operating system selects the function control terminal according to the preset program, selects the marking function, turns on the marking blade, the first layer glass bead spreading head and the second layer glass bead spreading head, and performs marking according to the preset program;

[0070] (10) The obtained tire-free time is used to maintain the marking line. The operating system selects the function control terminal, selects the retroreflective brightness coefficient detection function, and the fully automatic switch door is turned on. The retroreflective brightness coefficient detection head detects the retroreflective brightness coefficient of the dried hot-melt type marking line and announces the detection result by voice, and reports whether it is qualified according to the set procedure;

[0071] (11) If qualified, the first simulation ends and the simulation test is repeated three times. If the retroreflective brightness coefficients are all qualified, it is proved that under the environmental factors, the use of this material and construction parameters can make the initial retroreflective brightness coefficient of this type of hot melt road marking qualified;

[0072] (12) If the test result is unqualified, adjust the angle adjustment knob of the camera and observe whether the embedding degree of the glass beads on the marking surface on the display screen is between 50% and 67%.

[0073] In step (11), if the embedding degree of the marking line is qualified, it proves that the heating temperature of the paint is appropriate. It is necessary to open the surface-scattered glass bead observation part through the operating system, obtain the scattering density of the surface-scattered glass beads through taking pictures, image processing, and data analysis, and adjust its density appropriately according to the retroreflective brightness coefficient test result to carry out the next simulation test.

[0074] In step (12), if the embedding degree of the marking line is not up to standard, it indicates that the heating temperature of the paint is not appropriate. It is necessary to determine whether the embedding degree is too deep or too shallow. If the embedding degree is too deep, the heating temperature of the paint is appropriately reduced. If the embedding degree is too shallow, the heating temperature of the paint is appropriately increased, and the next set of simulation tests is performed.

[0075] Specific result data such as Figure 3-7 shown.

[0076] 1. The device integrates road marking, tire-free time test and retro-reflective brightness coefficient test, and comprehensively simulates the influence of the marking environment on its retro-reflective brightness coefficient and tire-free time.

[0077] 2. The device can be used as a basis for selecting marking construction parameters and a direct method for testing construction materials.

[0078] 3. By adding a surface-scattered glass bead embedding degree observation part and a surface-scattered glass bead spreading density observation part, a set of hot-melt marking construction methods based on the coating heating temperature and the surface-scattered glass bead density is formed.

[0079] 4. The device can study the influence of construction materials and environmental factors on the retro-reflective brightness coefficient and tire-free time of markings. The large database composed of the test results can be used as a guide for marking construction.

[0080] When only the hot melt paint heating part and the molten paint inlet part are used, it can be used as a paint premixed glass bead observation test device to observe the content of premixed glass beads in the paint in advance.

[0081] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. Design test device for the optimal initial retroreflective brightness coefficient of hot melt road markings. Features: The invention comprises a simulation chamber body (1), a temperature regulating unit (2), a wheel rutting plate (3), a marking unit (4), a humidity regulating unit (5), a wind speed control unit (6), a temperature, humidity and wind speed monitor (7), a marking and marking area (8), a surface-sprinkled glass bead embedding degree observation unit (9), a surface-sprinkled glass bead spreading density observation unit (10), a retro-reflection brightness coefficient detection unit (11), a tire-free time detection unit (12), a hot melt coating heating unit (13), a molten coating introduction unit (14) and a data display and processing unit (15). The temperature regulating unit (2), the wheel rutting plate (3), the marking unit (4), the humidity regulating unit (5), the wind speed control unit (6) and the temperature, humidity and wind speed monitor (7) are all arranged inside the simulation chamber body (1); the marking and marking area (8) is arranged at the upper end of the wheel rutting plate (3); the surface-sprinkled glass bead embedding degree observation unit (9 ... The device is arranged on the side of the rutting plate (3); the surface-sprinkled glass bead spreading density observation section (10), the retroreflective brightness coefficient detection section (11) and the tire-free time detection section (12) are arranged at the upper end of the rutting plate (3); the tire-free time detection section (12) is arranged at the rear end of the marking section (4); the hot melt coating heating section (13) is arranged at the upper end of the rutting plate (3) via the molten coating introduction section (14); and the data display and processing section (15) is respectively connected to the temperature adjustment section (2), the marking section (4), the humidity adjustment section (5), the wind speed control section (6), the temperature, humidity and wind speed monitor (7), the marking line marking area (8), the surface-sprinkled glass bead embedding degree observation section (9), the surface-sprinkled glass bead spreading density observation section (10), the retroreflective brightness coefficient detection section (11), the tire-free time detection section (12) and the hot melt coating heating section (13).

2. The optimal initial retroreflective brightness coefficient design test device for hot melt road marking according to claim 1, Features: The simulation warehouse body (1) comprises a mobile box (1.1), universal wheels (1.2), a support rod (1.3), an openable box door (1.4), a third sliding guide rail (1.5) and a fully automatic opening and closing door (1.6); the universal wheels (1.2) are arranged at the bottom of the mobile box (1.1), the support rod (1.3) is arranged at the rear end of the mobile box (1.1), the openable box door (1.4) is arranged at the side of the mobile box (1.1), the third sliding guide rail (1.5) is arranged at the front end of the bottom of the mobile box (1.1), and the fully automatic opening and closing door (1.6) is arranged at the front end of the mobile box (1.1).

3. The test device for designing the optimal initial retroreflective brightness coefficient of hot melt type road marking according to claim 1, Features: The marking part (4) comprises a marking blade head (4.1), a first layer glass bead scattering head (4.2), a second layer glass bead scattering head (4.3), a fixing rod (4.4), a sliding end (4.5), a first sliding guide rail (4.6) and a function control end (4.7); the sliding end (4.5) is arranged at the inner side end of the first sliding guide rail (4.6); the marking blade head (4.1), the first layer glass bead scattering head (4.2) and the second layer glass bead scattering head (4.3) are all arranged on the sliding end (4.5); and the function control end (4.7) is arranged on the first sliding guide rail (4.6).

4. The test device for designing the optimal initial retroreflective brightness coefficient of hot melt type road marking according to claim 1, Features: The surface-spreading glass bead density observation unit (10) is used to observe the density of the glass beads spread on the hot-melt road marking paint. The surface-spreading glass bead density observation unit (10) takes a picture and stores it, and transmits the picture to the data display and processing unit (15) to process the picture, thereby obtaining the surface-spreading glass bead density. The surface density is: S 0 =dl, d is the width of the imaging area, l is the length of the imaging area, S 0 is the area of ​​the camera, S i is the projection area of ​​the glass beads sprinkled on the i-th surface directly below, It is the sum of the projection areas of n surface-scattered glass beads within the camera area. The projection area of ​​the surface-scattered glass beads can be obtained by the image recognition software through the difference between the chromaticity performance of the glass beads and the chromaticity performance of the coating. The density observation part of the surface-scattered glass beads needs to remain stable without vertical or horizontal displacement, and the camera area is a constant.

5. The test device for designing the optimal initial retroreflective brightness coefficient of hot melt type road marking according to claim 1, Features: The retroreflective brightness coefficient detection part (11) comprises a retroreflective brightness coefficient detection head (11.1), a vertical telescopic part (11.2), a first vertical fixed rod (11.3) and a sliding guide rail terminal (11.4); the retroreflective brightness coefficient detection head (11.1) is suspended at the bottom of the vertical telescopic part (11.2); the upper end of the vertical telescopic part (11.2) is arranged on the first sliding guide rail (4.6) via the first vertical fixed rod (11.3); the sliding guide rail terminal (11.4) is arranged at the outer end of the first sliding guide rail (4.6); and the sliding guide rail terminal (11.4) and the vertical telescopic part (11.2) are both control-connected to the function control terminal (4.7).

6. The test device for designing the optimal initial retroreflective brightness coefficient of hot melt type road marking according to claim 1, Features: The tire-free time detection unit (12) comprises a rolling wheel (12.1), a handle holder (12.2), a sliding end (12.3), a vertical telescopic unit (12.4), a second sliding guide rail (12.5), a rolling wheel control end (12.6), a second vertical fixing rod (12.7) and a cotton cloth with acetone (12.8). The rolling wheel (12.1) is arranged on the handle holder (12.2). The upper end of the handle holder (12.2) The upper end of the vertical telescopic part (12.4) is connected to the second sliding guide rail (12.5) via a second vertical fixed rod (12.7), the sliding end (12.3) is arranged at one end of the second sliding guide rail (12.5), the rolling wheel control end (12.6) is arranged at the other end of the second sliding guide rail (12.5), and the cotton cloth (12.8) with acetone is arranged at the rear end of the rutting plate (3).

7. How to use the test device for designing the optimal initial retroreflective brightness coefficient of hot melt road markings. Features: The following steps are involved: (1) Collect the construction environment factors that need to be simulated, including temperature, humidity, wind speed, wind direction at different times, as well as construction raw materials, hot-melt road marking paint, glass beads, the amount of surface-sprinkled glass beads and the parameters of the heating temperature of the paint in the design documents; (2) Open the box door, check the components, close the marking blade, the first layer glass bead spreading head and the second layer glass bead spreading head, add appropriate amount of glass beads to the first layer glass bead spreading head and the second layer glass bead spreading head, and add water to the water tank; (3) Add the paint to the paint heating container, turn on the paint heating unit and the stirring unit, heat the paint to a molten state, use the temperature monitoring unit to monitor the paint temperature, and make the paint heating temperature reach the design requirement range. At the same time, turn on the power, turn on and set the operating system, temperature controller, and air compressor. If the construction environment temperature is lower than the indoor temperature, turn on the air compressor, turn on the humidity controller, blower, wind direction regulator, turn on the temperature, humidity, and wind speed monitor, and keep it for a certain period of time to make the temperature, humidity, and wind speed in the simulation chamber basically balanced; (4) Observe the temperature, humidity, wind speed and wind direction of the simulation chamber on the display screen to ensure that the environmental factors in the simulation chamber are basically consistent with those on the construction site. If they are not consistent, make appropriate adjustments; (5) The movable opening control end is pressed down for the first time to open the movable opening, and the molten marking paint flows through the impurity filter screen, filters the impurities, and then flows into the marking cutter head through the paint guide groove; (6) The operating system selects the function control terminal according to the preset program, selects the marking function only, the marking blade is turned on, the first layer glass bead spreading head and the second layer glass bead spreading head are not turned on, and marking is performed according to the preset program; (7) After the coating is formed, the operating system starts timing. After 3 minutes, the non-stick test program is selected in the operating system, and the rolling wheel rolls for 1 second according to the preset direction, weight, and rolling length. The tire of the measuring instrument is visually inspected to see if there is any sample sticking. If there is any sample sticking, the cotton cloth wiping function of the rolling wheel is activated. The rolling wheel moves horizontally and vertically to the cotton cloth with acetone for friction. Thereafter, the test is repeated every 30 seconds until the tire is no longer sticky to the sample. The operating system stops timing, and the time is the non-stick tire drying time. (8) Pressing the movable opening control end downward for the second time causes the movable opening to open, and the molten marking paint flows through the impurity filter screen, filters the impurities, and then flows into the marking cutter head through the paint guide groove; (9) The operating system selects the function control terminal according to the preset program, selects the marking function, turns on the marking blade, the first layer glass bead spreading head and the second layer glass bead spreading head, and performs marking at the preset speed; (10) The obtained tire-free time is used to maintain the marking line. The operating system selects the function control terminal, selects the retroreflective brightness coefficient detection function, and the fully automatic switch door is turned on. The retroreflective brightness coefficient detection head detects the retroreflective brightness coefficient of the dried hot-melt type marking line and announces the detection result by voice, and reports whether it is qualified according to the set procedure; (11) If qualified, the first simulation ends and the simulation test is repeated three times. If the retroreflective brightness coefficients are all qualified, it is proved that under the environmental factors, the use of this material and construction parameters can make the initial retroreflective brightness coefficient of this type of hot melt road marking qualified; (12) If the test result is unqualified, adjust the angle adjustment knob of the camera and observe whether the embedding degree of the glass beads on the marking surface on the display screen is between 50% and 67%.

8. A method for using the test device for designing the optimal initial retroreflective brightness coefficient of hot melt type road marking according to claim 7, Features: In step (11), if the embedding degree of the marking line is qualified, it proves that the heating temperature of the paint is appropriate. It is necessary to open the surface-scattered glass bead observation part through the operating system, obtain the scattering density of the surface-scattered glass beads through taking pictures, image processing, and data analysis, and adjust its density appropriately according to the retroreflective brightness coefficient test result to carry out the next simulation test.

9. The method for using the test device for designing the optimal initial retroreflective brightness coefficient of hot melt type road marking according to claim 7, Features: In step (12), if the embedding degree of the marking line is not up to standard, it indicates that the heating temperature of the paint is not appropriate. It is necessary to determine whether the embedding degree is too deep or too shallow. If the embedding degree is too deep, the heating temperature of the paint is appropriately reduced. If the embedding degree is too shallow, the heating temperature of the paint is appropriately increased, and the next set of simulation tests is performed.

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