Environmental simulation device for evaluating anti-skid performance of road surface
By designing an environmental simulation device for anti-slip performance on the road surface, using liquid atomizer and blower devices to simulate multi-media pollution environment, the problem that the existing technology cannot simulate multi-media pollution is solved, and the effective anti-slip performance on the road surface is achieved Evaluate.
Patent Information
- Application Number
- CN202420870598.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-04-25
AI Technical Summary
The existing pavement anti-slip performance assessment methods are difficult to simulate the mixed polluted environment of multi-media, and there is a lack of simulation equipment that can achieve multi-media pollution of mixed particulate gas and atomized gas.
An environmental simulation device was designed, including an environmental box and a particulate matter generator. The atomization environment was simulated through a liquid atomizer and a mixed particulate matter intake valve, and the PM2.5/PM10/sand and dust particles were used to use the blower device and the diversion channel. Introduce into the environmental box to achieve the combination of particulate polluted gas and atomized liquid, and simulate multi-media polluted environment.
It has achieved effective evaluation of the multi-media pollution environment with anti-slip performance of the road surface, solved the shortcomings of the existing technology that cannot simulate multi-media mixed pollution, and improved the accuracy and efficiency of the evaluation.
Smart Images
Figure CN222337031U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of road engineering tests, and in particular, relates to an environmental simulation device for evaluating the anti-skid performance of a road surface. Background Art
[0002] Pavement surface texture is the surface morphological feature of the road. It is a spatially disordered and locally regular geometric feature caused by the uneven distribution of the structural composition of the asphalt mixture. At the tribological level, pavement texture is an important source of anti-skid effects such as horizontal friction and cutting resistance on tires. The medium between the tire and the road will seriously affect the friction coefficient between the tire and the road. The pollution effect is deeply reflected in the direct shielding or wrapping of the pavement texture, resulting in poor contact between the pavement texture and the tire tread. The medium between the tire and the road mainly includes water, snow and ice caused by the meteorological environment, tire rubber particles generated by the friction between the tire and the road, lubricating oil leaked from the vehicle, and mud and sand brought in by construction vehicles or vehicles driving in from muddy roads. The measurement and evaluation method of pavement texture usually combines image acquisition and image analysis technology, uses a close-range camera to perform binocular visual optical image acquisition or uses a high-precision three-dimensional laser scanner to extract points of pavement morphology, and further combines texture feature parameters for quantitative evaluation, which greatly improves the evaluation efficiency and accuracy of the pavement anti-skid performance.
[0003] However, conventional pavement skid resistance assessments are usually conducted on newly constructed road surfaces or in indoor test laboratories, mostly considering dry clean pavements or one type of polluted medium. However, there is currently no corresponding simulation equipment that can simulate a mixed polluted environment with multiple media. Utility Model Content
[0004] The embodiment of the present application provides an environmental simulation device for evaluating the anti-skid performance of a road surface, which can realize multi-media pollution simulation of mixed particulate matter gas and atomized gas, and solves the shortcomings of the prior art.
[0005] An environmental simulation device for evaluating the anti-skid performance of a road surface, comprising:
[0006] An environmental box, wherein a box door is provided on one side of the environmental box, a liquid atomizer and a mixed particle air intake valve are provided on the environmental box, the liquid atomizer and the mixed particle air intake valve are both connected to the interior of the environmental box, a liquid inlet valve is provided on the liquid atomizer, and a specimen fixing assembly is provided at the bottom of the interior of the environmental box;
[0007] A particle generator, the particle generator includes a box body, a homogenization chamber and a particle pollutant placement bin are arranged inside the box body, the particle pollutant placement bin is communicated with the homogenization chamber, a particle permeable membrane is arranged between the particle pollutant placement bin and the homogenization chamber, the particle permeable membrane is used for the passage of PM2.5 / PM10 / sand and dust particles, a first blowing device and a second blowing device are arranged on the particle pollutant placement bin, the air outlet of the first blowing device and the air outlet of the second blowing device are both facing the inside of the particle pollutant placement bin, the homogenization chamber is provided with a guide channel, and the guide channel is communicated with the mixed particle intake valve.
[0008] According to some other embodiments of the environmental simulation device for evaluating the anti-skid performance of a road surface of the present utility model, a third blowing device is provided on the homogenization chamber, and the third blowing device is located on the opposite side of the guide channel.
[0009] According to other embodiments of the environmental simulation device for evaluating the anti-skid performance of a road surface of the present utility model, a particle concentration detection device is provided on the box body, the particle concentration detection device is communicated with the homogenization chamber, and a particle permeable membrane is provided between the particle concentration detection device and the homogenization chamber.
[0010] According to other embodiments of the environmental simulation device for evaluating the anti-skid performance of a road surface of the present utility model, the first air blowing device is arranged at the bottom of the homogenization chamber, the second air blowing device is arranged at the side of the homogenization chamber, and an air flow channel is arranged between the second air blowing device and the homogenization chamber.
[0011] According to some other embodiments of the environmental simulation device for evaluating the anti-skid performance of a road surface of the present utility model, the specimen fixing assembly includes a back baffle and two side baffles, and the back baffle is arranged on one side of the two side baffles.
[0012] According to some other embodiments of the environmental simulation device for evaluating the anti-skid performance of a road surface of the present utility model, a temperature controller is provided on one side of the environmental box.
[0013] According to some other embodiments of the environmental simulation device for evaluating the anti-skid performance of a road surface of the present utility model, a bin door is provided on one side of the bin for placing the particulate pollutants.
[0014] According to other embodiments of the utility model, an environmental simulation device for evaluating the anti-skid performance of a road surface is provided with an opening on the environmental box, and the particle pollutant placement bin is connected to the opening via a connecting channel. A one-way valve is provided inside the connecting channel, and the one-way valve can be opened unidirectionally toward the particle pollutant placement bin.
[0015] According to some other embodiments of the environmental simulation device for evaluating the anti-skid performance of a road surface of the present utility model, a boost valve port is provided on the diversion channel.
[0016] According to some other embodiments of the environmental simulation device for evaluating the anti-skid performance of a road surface of the present utility model, a window is provided on the box door.
[0017] The environmental simulation device for evaluating the anti-skid performance of a road surface according to the embodiment of the utility model has at least the following beneficial effects: during operation, a test piece is mounted on a test piece fixing assembly, a particle pollution source is added to a particle pollution placement bin, and the first blowing device and the second blowing device are operated to blow up the particle pollution source, wherein the PM2.5 / PM10 / sand and dust particles in the particle pollution source pass through the particle permeable membrane into the homogenization chamber, and the PM2.5 / PM10 / sand and dust particles entering the homogenization chamber pass through the guide channel and then enter the environmental box from the mixed particle inlet valve, thereby simulating the pollution of the test piece by the particle pollution gas; liquid is introduced into the liquid inlet valve, and the liquid atomizer atomizes the liquid and sends it into the environmental box, thereby simulating the pollution of the test piece by the atomized environment; in addition, the particle pollution gas and the atomized liquid can be introduced into the environmental box at the same time, so as to realize the simulation of the test piece in an environment in which the atomized environment and the particle pollution gas are combined. Therefore, the device can realize multi-media pollution simulation of the mixed particle gas and the atomized gas, and solves the shortcomings of the prior art. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure of the environmental chamber provided in one embodiment of the present application;
[0019] Figure 2 yes Figure 1 a side view of the illustrated embodiment;
[0020] Figure 3 yes Figure 1 a top view of the illustrated embodiment;
[0021] Figure 4 is a schematic structural diagram of a particle generator provided in one embodiment of the present application;
[0022] Figure 5 It is a structural schematic diagram of a matching power supply device provided in one embodiment of the present application. DETAILED DESCRIPTION
[0023] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.
[0024] The following is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.
[0025] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0026] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.
[0027] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0028] Pavement surface texture is the surface morphological feature of the road. It is a spatially disordered and locally regular geometric feature caused by the uneven distribution of the structural composition of the asphalt mixture. At the tribological level, pavement texture is an important source of anti-skid effects such as horizontal friction and cutting resistance on tires. The medium between the tire and the road will seriously affect the friction coefficient between the tire and the road. The pollution effect is deeply reflected in the direct shielding or wrapping of the pavement texture, resulting in poor contact between the pavement texture and the tire tread. The medium between the tire and the road mainly includes water, snow and ice caused by the meteorological environment, tire rubber particles generated by the friction between the tire and the road, lubricating oil leaked from the vehicle, and mud and sand brought in by construction vehicles or vehicles driving in from muddy roads. The measurement and evaluation method of pavement texture usually combines image acquisition and image analysis technology, uses a close-range camera to perform binocular visual optical image acquisition or uses a high-precision three-dimensional laser scanner to extract points of pavement morphology, and further combines texture feature parameters for quantitative evaluation, which greatly improves the evaluation efficiency and accuracy of the pavement anti-skid performance.
[0029] However, conventional pavement skid resistance assessments are usually conducted on newly constructed road surfaces or in indoor test laboratories, mostly considering dry clean pavements or one type of polluted medium. However, there is currently no corresponding simulation equipment that can simulate a mixed polluted environment with multiple media.
[0030] See also Figures 1 to 5 The present application provides an environmental simulation device for evaluating the anti-skid performance of a road surface, comprising an environmental box 1 and a particle generator 2. A box door 10 is provided on one side of the environmental box 1. A liquid atomizer 11 and a mixed particle inlet valve 12 are provided on the environmental box 1. The liquid atomizer 11 and the mixed particle inlet valve 12 are both connected to the interior of the environmental box 1. A liquid inlet valve 110 is provided on the liquid atomizer 11. A specimen fixing assembly 13 is provided at the bottom of the interior of the environmental box 1. The particle generator 2 comprises a box body 20. A homogenizing chamber 20a and a particle generator 20a are provided inside the box body 20. A particle pollutant placement bin 20b is connected to the homogenization chamber 20a, a particle permeable membrane 21 is provided between the particle pollutant placement bin 20b and the homogenization chamber 20a, a first blowing device 200 and a second blowing device 201 are provided on the particle pollutant placement bin 20b, an air outlet of the first blowing device 200 and an air outlet of the second blowing device 201 are both facing the particle pollutant placement bin 20b, a guide channel 202 is provided on the homogenization chamber 20a, and the guide channel 202 is connected to the mixed particle intake valve 12.
[0031] During operation, the specimen is mounted on the specimen fixing assembly 13, and a particle pollution source is added to the particle pollution placement bin 20b. The first blowing device 200 and the second blowing device 201 blow up the particle pollution source, wherein the PM2.5 / PM10 / sand and dust particles in the particle pollution source pass through the particle permeable membrane 21 and enter the homogenization chamber 20a. The PM2.5 / PM10 / sand and dust particles entering the homogenization chamber 20a pass through the guide channel 202 and then enter the environmental chamber from the mixed particle intake valve 12. 1, thereby simulating the pollution of the particle pollution gas on the test piece; liquid is introduced into the liquid inlet valve 110, and the liquid atomizer 11 will atomize the liquid and send it into the environmental box 1, thereby realizing the pollution of the test piece in the atomized environment. In addition, the particle pollution gas and the atomized liquid can be introduced into the environmental box 1 at the same time to realize the pollution of the test piece in the environment of the atomized environment combined with the particle pollution gas. Therefore, the device can realize the multi-media pollution simulation of the mixed particulate gas and the atomized gas, which solves the shortcomings of the prior art.
[0032] Specifically, the environmental box 1 is a metal box, and the liquid atomizer 11 and the mixed particle intake valve 12 are both installed on the top of the environmental box 1, wherein the liquid atomizer 11 is located inside the environmental box 1, the intake valve of the liquid atomizer 11 is located outside the environmental box 1, and the valve body of the mixed particle intake valve 12 is located inside the environmental box 1, and the valve port thereof is located outside the environmental box 1.
[0033] In some embodiments, a temperature controller 1a is provided on one side of the environmental box 1. The temperature controller 1a is used to control the temperature in the environmental box 1, so that the environmental simulation of the environmental box 1 is more multimedia-oriented.
[0034] In order to improve the efficiency of the simulation state, in some embodiments, a plurality of liquid atomizers 11 and a plurality of mixed particle intake valves 12 are provided.
[0035] Specifically, two liquid atomizers 11 and two mixed particle inlet valves 12 are provided on the top of the environmental box 1 .
[0036] In order to allow the particulate gas in the homogenization chamber 20 a to quickly enter the guide channel 202 , in some embodiments, a third blowing device 206 is provided on the homogenization chamber 20 a , and the third blowing device 206 is located on the opposite side of the guide channel 202 .
[0037] In some embodiments, a particle concentration detection device 2a is provided on the housing 20, the particle concentration detection device 2a is in communication with the homogenization chamber 20a, and a particle permeable membrane 21 is provided between the particle concentration detection device 2a and the homogenization chamber 20a. The particle permeable membrane 21 can only allow PM2.5 / PM10 / sand and dust particles to pass through, so the PM2.5 / PM10 / sand and dust particles in the homogenization chamber 20a will pass through the particle permeable membrane 21 and be detected by the particle concentration detection device 2a, so that it is convenient for the staff to understand the PM2.5 / PM10 / sand and dust particle concentration in the homogenization chamber 20a, and when the PM2.5 / PM10 / sand and dust particle concentration reaches the preset standard, the diversion channel 202 will be opened to allow the gas to be discharged.
[0038] In some embodiments, the first air blowing device 200 is disposed at the bottom of the homogenizing chamber 20a, the second air blowing device 201 is disposed at the side of the homogenizing chamber 20a, and an air flow channel 203 is disposed between the second air blowing device 201 and the homogenizing chamber 20a. Blowing air into the homogenizing chamber 20a through the first air blowing device 200 and the second air blowing device 201 can form turbulence in the homogenizing chamber 20a, further accelerating the uniform mixing of the particles.
[0039] In addition, a filter screen 204 is provided between the first air blowing device 200 and the homogenizing chamber 20a, and a filter screen 204 is provided between the second air blowing device 201 and the homogenizing chamber 20a, and the filter screen 204 plays a blocking role.
[0040] In some embodiments, a bin door 20b is provided on one side of the particle pollutant placement bin 20b. When the work is completed, the bin door 20b can be opened to clean out the particle pollutants in the particle pollutant placement bin 20b.
[0041] In some embodiments, a viewing window 1 b is provided on the box door 10 to facilitate the staff to observe the situation inside the environmental box 1 .
[0042] In some embodiments, the specimen fixing assembly 13 includes a back baffle 131 and two side baffles 130 , and the back baffle 131 is disposed on one side of the two side baffles 130 .
[0043] Specifically, the two side baffles 130 are L-shaped structures, and the two side baffles 130 and the back baffle 131 form a U-shaped structure. The test piece is clamped between the two side baffles 130 and the back baffle 131 to be fixed at the bottom of the environmental chamber 1 .
[0044] In some embodiments, a control panel 1c is provided on one side of the environmental chamber 1, and the control panel 1c is controlled and connected to the first blowing device 200, the second blowing device 201, the third blowing device 206, the particle concentration detection device 2a, the mixed particle intake valve 12 and the liquid intake valve 110.
[0045] During operation, the staff can control the operation of the first blowing device 200, the second blowing device 201, the third blowing device 206, the particle concentration detection device 2a, the mixed particle intake valve 12 and the liquid intake valve 110 by operating the control panel 1c.
[0046] In some embodiments, an opening is provided on the environmental chamber 1, and the particle contaminant placement bin 20b is connected to the opening through a connecting channel 205. A one-way valve is provided inside the connecting channel 205, and the one-way valve can be opened unidirectionally toward the particle contaminant placement bin 20b.
[0047] Specifically, the particle pollutant placement bin 20b is connected to an opening provided on the environmental chamber 1 through an inclined connecting channel 205. When the particle pollutants are placed in the particle pollutant placement bin 20b, the particle pollutants will enter the particle pollutant placement bin 20b along the connecting channel 205. Due to the one-way conduction effect of the one-way valve, when the first blowing device 200 and the second blowing device 201 are blowing air into the particle pollutant placement bin 20b, the one-way valve closes the connecting channel 205, so the particle pollutants placed in the particle pollutant placement bin 20b will not flow out from the connecting channel 205.
[0048] In some embodiments, a pressure boosting valve port 202 a is disposed on the flow guiding channel 202 .
[0049] Specifically, the diameter of the boost valve port 202a on the guide channel 202 is smaller than the diameter of the guide channel 202. When the particulate pollutants placed in the particulate pollutant placement bin 20b pass through the boost valve port 202a, the flow rate increases, causing the particulate pollutants to accelerate through and enter the mixed particulate matter intake valve 12.
[0050] In addition, the present application also includes a matching power supply device, which provides power for the operation of the environmental chamber 1 and the particle generator 2, wherein the outer portion of the upper end of the matching power supply device is a handle 25, and the outer portion of the middle portion of the upper end of the matching power supply device is a power indicator light 26, and the power indicator light 26 has two colors, green and red. The indicator light 26 is green when the matching power supply device is normally powered on, and the indicator light 26 is red when the matching power supply device is not connected to the device. The left side of the upper part of the matching power supply device is a power output port 27, the right side of the upper part of the matching power supply device is a power input port 28, and the left side of the lower end of the matching power supply device is a power heat sink 29.
[0051] A power interface 1d is provided on the environmental box 1, and the power interface 1d is connected to a matching power supply device. A power interface 1f is provided on the box body 20 of the particle generator 2, and the power interface 1f is connected to a matching power supply device.
[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
Claims
1. An environmental simulation device for evaluating the anti-skid performance of a road surface, characterized in that: include: An environmental box, wherein a box door is provided on one side of the environmental box, a liquid atomizer and a mixed particle air intake valve are provided on the environmental box, the liquid atomizer and the mixed particle air intake valve are both connected to the interior of the environmental box, a liquid inlet valve is provided on the liquid atomizer, and a specimen fixing assembly is provided at the bottom of the interior of the environmental box; A particle generator, the particle generator includes a box body, a homogenization chamber and a particle pollutant placement bin are arranged inside the box body, the particle pollutant placement bin is communicated with the homogenization chamber, a particle permeable membrane is arranged between the particle pollutant placement bin and the homogenization chamber, the particle permeable membrane is used for the passage of PM2.5 / PM10 / sand and dust particles, a first blowing device and a second blowing device are arranged on the particle pollutant placement bin, the air outlet of the first blowing device and the air outlet of the second blowing device are both facing the inside of the particle pollutant placement bin, the homogenization chamber is provided with a guide channel, and the guide channel is communicated with the mixed particle intake valve.
2. The environmental simulation device for evaluating the anti-skid performance of a road surface according to claim 1, characterized in that: The homogenizing chamber is provided with a third blowing device, and the third blowing device is located at the opposite side of the guide channel.
3. The environmental simulation device for evaluating the anti-skid performance of a road surface according to claim 1, characterized in that: A particle concentration detection device is provided on the box body, the particle concentration detection device is communicated with the homogenization chamber, and a particle permeable membrane is provided between the particle concentration detection device and the homogenization chamber.
4. The environmental simulation device for evaluating the anti-skid performance of a road surface according to claim 1, characterized in that: The first air blowing device is arranged at the bottom of the homogenizing chamber, the second air blowing device is arranged at the side of the homogenizing chamber, and an air flow channel is arranged between the second air blowing device and the homogenizing chamber.
5. The environmental simulation device for evaluating the anti-skid performance of a road surface according to claim 1, characterized in that: The specimen fixing assembly comprises a back baffle and two side baffles, wherein the back baffle is arranged on one side of the two side baffles.
6. The environmental simulation device for evaluating the anti-skid performance of a road surface according to claim 1, characterized in that: A temperature controller is provided on one side of the environmental box.
7. The environmental simulation device for evaluating the anti-skid performance of a road surface according to claim 1, characterized in that: A bin door is provided on one side of the bin for placing the particulate pollutants.
8. The environmental simulation device for evaluating the anti-skid performance of a road surface according to claim 1, characterized in that: The environmental box is provided with an opening, and the particle pollutant placement bin is communicated with the opening through a connecting channel. A one-way valve is provided inside the connecting channel, and the one-way valve can be opened unidirectionally toward the particle pollutant placement bin.
9. The environmental simulation device for evaluating the anti-skid performance of a road surface according to claim 1, characterized in that: A pressure boosting valve port is arranged on the flow guiding channel.
10. The environmental simulation device for evaluating the anti-skid performance of a road surface according to claim 1, characterized in that: The box door is provided with a viewing window.