CN211576913U - Road surface wet-skid index real-time testing device - Google Patents
Road surface wet-skid index real-time testing device Download PDFInfo
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Abstract
The utility model discloses a real-time testing device for road surface wet-skid index, which comprises a shell with an open bottom, wherein a slide rail is transversely arranged at the position close to the top surface inside the shell, a sliding wheel capable of moving along the slide rail is arranged between the top surface and the slide rail, and the sliding wheel is rotatably arranged at the top of a vertically arranged loading mechanism; the friction wheel mounting seat of the loading mechanism is rotatably provided with a friction wheel; the friction wheel mounting seat of the loading mechanism is connected with one end of the horizontal tension and compression sensor, the other end of the horizontal tension and compression sensor is connected with the power push-pull mechanism, and the power push-pull mechanism is fixedly mounted on the inner side wall of the shell. The utility model discloses the accessible sensor realizes the discernment to unfavorable weather condition to the wet smooth index automatic test of road surface, guarantee the real-time of test, reduce the cost of labor, reduce personnel at the interference of highway field test to the traffic.
Description
Technical Field
The utility model belongs to the road engineering field relates to road surface testing arrangement, concretely relates to wet slippery index real-time testing arrangement in road surface.
Background
Wet and slippery accidents occurring in rainy days cause great hidden dangers to road safety, the traffic safety is seriously threatened, and the accident rate in rainy days is more than 13 times that in sunny days according to incomplete statistics. In view of the influence of adverse weather conditions on driving safety, a scholars in the road field puts forward a concept of wet-skid index, and reflects the actual friction coefficient of the road surface determined by main factors such as road surface temperature, road surface state and road surface pollutants. Meanwhile, scholars establish regression models of parameters such as traffic volume, road surface wet-skid indexes and wet-skid accidents, and can provide corresponding suggestions for traffic driving according to the wet-skid indexes.
At present, the road surface wet-skid index is mainly converted by means of a transverse force coefficient or a pendulum value, the device is required to be brought into a field for debugging and then is used for measuring, the test process is complicated, the defects that the labor consumption is high, the running is interfered, the safety of testers is greatly threatened during the test of a highway, the synchronization with the weather and the road surface condition in the day can not be realized, the real-time guidance for the traffic running can not be provided, and the like exist.
Disclosure of Invention
Not enough to prior art exists, the utility model aims to provide a wet slippery index real-time testing arrangement in road surface solves the technical problem that human cost is high among the prior art wet slippery index test procedure in road surface, compromises road surface wet slippery index accuracy and test cost.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a real-time testing device for road surface wet-skid index comprises a shell with an open bottom, wherein a slide rail is transversely arranged at a position close to a top surface in the shell, a slide wheel capable of moving along the slide rail is arranged between the top surface and the slide rail, and the slide wheel is rotatably arranged at the top of a vertically arranged loading mechanism;
the loading mechanism comprises a pressure motor with a sliding wheel mounted at the top, the pressure motor is connected with a loading rod through a vertical pressure sensor, the loading rod extends into a through hole at the top of the friction wheel mounting seat, and a limiting head is arranged at the end part of the loading rod and used for limiting the loading rod to be separated from the through hole; the loading rod is sleeved with a spring, the top end of the spring is propped against a spring stop block fixedly arranged on the loading rod, and the bottom end of the spring is propped against the top of the friction wheel mounting seat;
the friction wheel mounting seat of the loading mechanism is rotatably provided with a friction wheel;
the friction wheel mounting seat of the loading mechanism is connected with one end of the horizontal tension and compression sensor, the other end of the horizontal tension and compression sensor is connected with the power push-pull mechanism, and the power push-pull mechanism is fixedly mounted on the inner side wall of the shell.
The utility model discloses still have following technical characteristic:
one end of the horizontal tension and compression sensor is provided with a friction wheel fixing port, and the friction wheel fixing port is connected with a sensor fixing head arranged on a friction wheel mounting seat; the other end of the horizontal tension and compression sensor is provided with a power fixing port, and the power fixing port is connected with a push-pull rod of the power push-pull mechanism.
The device is characterized by further comprising a controller, wherein the input end of the controller is connected with the vertical pressure sensor and the horizontal pulling and pressing sensor, and the output end of the controller is connected with the power pushing and pulling mechanism.
A detection cavity is further mounted on the inner side wall of the shell, an air circulation hole extending out of the shell is formed in one side of the detection cavity, and a humidity-sensitive switch relay and a temperature sensor are mounted in the detection cavity; the humidity sensitive switch relay and the temperature sensor are connected with the input end of the controller.
The controller install on being close to the casing inside wall that detects the chamber, detection chamber and controller between keep apart through the waterproof layer.
The power push-pull mechanism is an electric telescopic rod.
The bottom of the side wall of the shell is provided with a plurality of fixing feet.
Compared with the prior art, the utility model, following technological effect has:
(I) the utility model discloses the accessible sensor realizes the discernment to unfavorable weather condition to the wet smooth index automatic test of road surface, the real-time of assurance test reduces the cost of labor, and reduction personnel are at the interference of highway field test to the traffic.
(II) the utility model simulates the load of the vehicle, and the load can be properly adjusted according to the requirement; the friction wheel simulates the real state of the vehicle during braking, and compared with the traditional pendulum instrument, the test result is more in line with the real state of the vehicle on the road under adverse weather conditions.
(III) the utility model discloses a controller converts the friction pulley test result into the wet and slippery index, further utilizes existing research model to export it for traffic volume, driving speed isoparametric to the realization is to the direction of traffic driving under the unfavorable weather condition.
(IV) the utility model discloses can extensively be used for the survey of high-grade highway road surface wet skid index, its simple structure, reasonable, the cost is lower, has very strong practicality.
Drawings
Fig. 1 is a schematic structural view of the front cross section of the present invention.
Fig. 2 is a schematic side sectional structure of the present invention.
Fig. 3 is a schematic structural view of the press motor.
Fig. 4 is a schematic structural view of the loading lever.
Fig. 5 is a schematic structural view of a friction wheel mount.
Fig. 6 is a schematic structural diagram of the horizontal tension and compression sensor.
The meaning of the individual reference symbols in the figures is: 1-shell, 2-slide rail, 3-slide wheel, 4-loading mechanism, 5-friction wheel, 6-horizontal tension and compression sensor, 7-power push-pull mechanism, 8-detection cavity, 9-air circulation hole, 10-humidity sensitive switch relay, 11-temperature sensor, 12-friction wheel fixing port, 13-power fixing port, 14-push-pull rod, 15-controller, 16-waterproof layer and 17-fixing foot;
401-pressure motor, 402-vertical pressure sensor, 403-loading rod, 404-friction wheel mounting seat, 405-through hole, 406-limiting head, 407-spring, 408-spring stop block and 409-sensor fixing joint.
The following examples are provided to explain the present invention in further detail.
Detailed Description
The following embodiments of the present invention are given, and it should be noted that the present invention is not limited to the following embodiments, and all the equivalent transformations made on the basis of the technical solution of the present application all fall into the protection scope of the present invention.
Example 1:
the embodiment provides a real-time testing device for road surface wet-skid index, as shown in fig. 1 to 6, comprising a shell 1 with an open bottom, wherein a slide rail 2 is transversely arranged at a position close to a top surface inside the shell 1, a sliding wheel 3 capable of moving along the slide rail 2 is arranged between the top surface and the slide rail 2, and the sliding wheel 3 is rotatably mounted at the top of a loading mechanism 4 which is vertically arranged;
the loading mechanism 4 comprises a pressure motor 401 with a sliding wheel 3 mounted at the top, the pressure motor 401 is connected with a loading rod 403 through a vertical pressure sensor 402, the loading rod 403 extends into a through hole 405 at the top of a friction wheel mounting seat 404, a limiting head 406 is arranged at the end of the loading rod 403, and the limiting head 406 is used for limiting the loading rod 403 from falling out of the through hole 405; the loading rod 403 is sleeved with a spring 407, the top end of the spring 407 is pressed against a spring stop 408 fixed on the loading rod 403, and the bottom end of the spring 407 is pressed against the top of the friction wheel mounting seat 404;
a friction wheel 5 is rotatably mounted on the friction wheel mounting seat 404 of the loading mechanism 4;
the friction wheel mounting seat 404 of the loading mechanism 4 is connected with one end of the horizontal tension and compression sensor 6, the other end of the horizontal tension and compression sensor 6 is connected with the power push-pull mechanism 7, and the power push-pull mechanism 7 is fixedly mounted on the inner side wall of the shell 1.
As a preferable scheme of this embodiment, one end of the horizontal tension/compression sensor 6 is provided with a friction wheel fixing port 12, and the friction wheel fixing port 12 is connected with a sensor fixing joint 409 arranged on the friction wheel mounting seat 404; the other end of the horizontal tension and compression sensor 6 is provided with a power fixing port 13, and the power fixing port 13 is connected with a push-pull rod 14 of the power push-pull mechanism 7. Is convenient for installation and disassembly.
As a preferable scheme of this embodiment, the device further comprises a controller 15, an input end of the controller 15 is connected with the vertical pressure sensor 402 and the horizontal tension and compression sensor 6, and an output end of the controller 15 is connected with the power push-pull mechanism 7. The horizontal tension and compression sensor 6 adopts an MS-1 type horizontal tension and compression sensor.
The controller 15 is a known product, and a programmable controller is adopted, or a controller such as a single chip microcomputer can be selected according to requirements. The controller 15 analyzes and processes the acquired data to realize the conversion between the wet state friction force and the wet slip index, the conversion between the wet slip index and the traffic volume, and the conversion between the wet slip index and the traffic speed. The analysis processing program in the controller 15 is a conventional control program that can be written according to actual requirements. The specific control program for the controller 15 to control the reciprocating motion of the power push-pull mechanism 7 is also a conventional control program that can be written according to actual requirements.
More preferably, the inner side wall of the shell 1 is further provided with a detection cavity 8, one side of the detection cavity 8 is provided with an air flow through hole 9 extending out of the shell 1, and a humidity sensitive switch relay 10 and a temperature sensor 11 are arranged in the detection cavity 8; the moisture sensitive switch relay 10 and the temperature sensor are connected to the input of the controller 15. Since there may be rainy and snowy weather in winter, rainy and hot weather in summer, etc., the controller 15 may automatically determine the weather conditions according to the data fed back by the humidity-sensitive switch relay 10 and the temperature sensor 11, and the specific determination program is also a routine determination program that can be written according to actual needs.
It is required to explain the utility model discloses a device under the condition that does not adopt automated control, also can realize the test of road surface wet and slippery index, adopts sensor and controller to carry out automated control, can realize road surface wet and slippery index real-time test better. If need external big display screen, through controller 15 with it with the utility model discloses thereby the device is connected and is realized information output, gives driving speed, the traffic volume suggestion after staff or vehicle driver wet and slippery index result and the conversion, provides the guidance for the driving.
As a preferable scheme of this embodiment, the controller 15 is installed on the inner side wall of the housing 1 near the detection chamber 8, and the detection chamber 8 is isolated from the controller 15 by a waterproof layer 16. The waterproof layer 16 ensures that the controller is not affected by external moisture.
As a preferable scheme of this embodiment, the power push-pull mechanism 7 is an electric telescopic rod.
As a preferable scheme of this embodiment, the bottom of the side wall of the housing 1 is provided with a plurality of fixing feet 17. The fixing foot 17 is fixed to the ground, and the fixing foot 17 receives the reaction force given by the loading mechanism 4 and the gravity of the apparatus itself.
The utility model discloses a simple structure can be fixed in the scene for a long time to according to weather conditions, the road surface situation real-time determination wet and slippery index of the current day, the road surface wet and slippery index real-time testing arrangement who provides reliable and effectual reference for the traffic driving appears to be especially important.
The utility model discloses a use method as follows:
step one, the device is installed on a reserved open space of a highway, such as a central separation zone of the highway or an open space of a road beside a toll station, an actually measured friction coefficient conversion relation, a starting humidity range and a starting temperature range are set in a controller 15, a conversion relation between the actually measured friction coefficient and a humidity index, a corresponding relation between the humidity index and a road surface condition, and a conversion relation between the actually measured friction coefficient and a recommended speed are set, the loading pressure of a pressure motor 401 is adjusted, and a set load is given to a friction wheel 5.
Wherein:
the actually measured friction coefficient conversion relation is as follows:
in the formula: f is the actually measured friction coefficient; n is a radical ofvIs a vertical pressure sensor measurement; n is a radical ofhIs the horizontal tension and compression sensor measurement value.
The conversion relation between the measured friction coefficient and the humidity index and the corresponding relation between the humidity index and the road surface condition are shown in the following table 1:
TABLE 1 Highway road surface wet skid index comparison table
The conversion relation between the actually measured friction coefficient and the recommended speed is as follows:
in the formula: f is the actually measured friction coefficient; v is the recommended speed.
And when the recommended speed is greater than the design speed, taking the design speed as a speed limit value.
And step two, the humidity-sensitive switch relay is kept electrified, the humidity of air rises when water falls, when the environment humidity changes sharply, the circuit of the humidity-sensitive switch relay 10 is closed to send a signal, the controller 15 controls the power push-pull mechanism 7 to start running after receiving the signals collected by the humidity-sensitive switch relay 10 and the temperature sensor 11, meanwhile, the humidity-sensitive switch relay 10 starts monitoring the environment humidity change, the temperature sensor monitors the temperature change, when the humidity is reduced to a set value, the circuit of the humidity-sensitive switch relay 10 is disconnected, and the whole device stops working.
And step three, controlling the pressure set by the pressure motor 401 for the friction wheel 5 when the power push-pull mechanism 7 starts to operate, driving the friction wheel 5 to do reciprocating motion by the power push-pull mechanism 7, starting recording by the vertical pressure sensor 402 and the horizontal pull-press sensor 6, obtaining the friction force generated by the friction wheel 5 and the ground by the controller 15 through calculation, and outputting the result by the controller to give real-time guidance to traffic driving.
Claims (7)
1. The real-time testing device for the road surface wet-skid index comprises a shell (1) with an open bottom, and is characterized in that a slide rail (2) is transversely arranged at a position close to the top surface in the shell (1), a slide wheel (3) capable of moving along the slide rail (2) is arranged between the top surface and the slide rail (2), and the slide wheel (3) is rotatably installed at the top of a vertically arranged loading mechanism (4);
the loading mechanism (4) comprises a pressure motor (401) with a sliding wheel (3) mounted at the top, the pressure motor (401) is connected with a loading rod (403) through a vertical pressure sensor (402), the loading rod (403) extends into a through hole (405) in the top of a friction wheel mounting seat (404), a limiting head (406) is arranged at the end of the loading rod (403), and the limiting head (406) is used for limiting the loading rod (403) to be separated from the through hole (405); the loading rod (403) is sleeved with a spring (407), the top end of the spring (407) is pressed against a spring stop block (408) fixedly arranged on the loading rod (403), and the bottom end of the spring (407) is pressed against the top of the friction wheel mounting seat (404);
a friction wheel (5) is rotatably arranged on the friction wheel mounting seat (404) of the loading mechanism (4);
the friction wheel mounting seat (404) of the loading mechanism (4) is connected with one end of the horizontal tension and compression sensor (6), the other end of the horizontal tension and compression sensor (6) is connected with the power push-pull mechanism (7), and the power push-pull mechanism (7) is fixedly mounted on the inner side wall of the shell (1).
2. The real-time pavement slippery index testing device according to claim 1, characterized in that one end of the horizontal tension-compression sensor (6) is provided with a friction wheel fixing port (12), and the friction wheel fixing port (12) is connected with a sensor fixing joint (409) arranged on a friction wheel mounting seat (404); the other end of the horizontal pulling and pressing sensor (6) is provided with a power fixing port (13), and the power fixing port (13) is connected with a pushing and pulling rod (14) of the power pushing and pulling mechanism (7).
3. The device for testing the road surface wet-skid index in real time as claimed in claim 1, further comprising a controller (15), wherein the input end of the controller (15) is connected with the vertical pressure sensor (402) and the horizontal tension and compression sensor (6), and the output end of the controller (15) is connected with the power push-pull mechanism (7).
4. The real-time pavement slippery index testing device according to claim 3, characterized in that, the inner side wall of the shell (1) is further provided with a detection chamber (8), one side of the detection chamber (8) is provided with an air circulation hole (9) extending out of the shell (1), and a humidity sensitive switch relay (10) and a temperature sensor (11) are arranged in the detection chamber (8); the humidity sensitive switch relay (10) and the temperature sensor are connected with the input end of the controller (15).
5. The device for testing the wet-skid index of a road surface according to claim 4, wherein the controller (15) is installed on the inner side wall of the shell (1) close to the detection cavity (8), and the detection cavity (8) is isolated from the controller (15) through a waterproof layer (16).
6. The real-time pavement slippery index testing device according to claim 1, characterized in that the power push-pull mechanism (7) is an electric telescopic rod.
7. The device for testing the wet-skid index of a road surface in real time as claimed in claim 1, wherein a plurality of fixing feet (17) are arranged at the bottom of the side wall of the shell (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922180494.7U CN211576913U (en) | 2019-12-06 | 2019-12-06 | Road surface wet-skid index real-time testing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922180494.7U CN211576913U (en) | 2019-12-06 | 2019-12-06 | Road surface wet-skid index real-time testing device |
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| CN211576913U true CN211576913U (en) | 2020-09-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557506A (en) * | 2020-11-27 | 2021-03-26 | 上海华东民航机场建设监理有限公司 | Method, system, terminal and storage medium for adopting unmanned aerial vehicle to supervise road surface characteristics |
| CN113588543A (en) * | 2021-07-30 | 2021-11-02 | 哈尔滨工业大学 | Self-lifting controller for wheel type high-speed anti-skid instrument |
| CN117664846A (en) * | 2023-11-17 | 2024-03-08 | 暨南大学 | Rolling type friction meter for road surface anti-skid performance |
-
2019
- 2019-12-06 CN CN201922180494.7U patent/CN211576913U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557506A (en) * | 2020-11-27 | 2021-03-26 | 上海华东民航机场建设监理有限公司 | Method, system, terminal and storage medium for adopting unmanned aerial vehicle to supervise road surface characteristics |
| CN112557506B (en) * | 2020-11-27 | 2024-04-26 | 上海华东民航机场建设监理有限公司 | Method, system, terminal and storage medium for supervising road surface characteristics by adopting unmanned aerial vehicle |
| CN113588543A (en) * | 2021-07-30 | 2021-11-02 | 哈尔滨工业大学 | Self-lifting controller for wheel type high-speed anti-skid instrument |
| CN117664846A (en) * | 2023-11-17 | 2024-03-08 | 暨南大学 | Rolling type friction meter for road surface anti-skid performance |
| CN117664846B (en) * | 2023-11-17 | 2024-06-04 | 暨南大学 | Rolling type friction meter for road surface anti-skid performance |
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Address after: 250102 No.8, Longao North Road, Lixia District, Jinan City, Shandong Province Patentee after: Shandong high speed Group Co.,Ltd. Patentee after: CHANG'AN University Patentee after: Shandong high speed transportation construction Group Co.,Ltd. Address before: 250102 No.8, Longao North Road, Lixia District, Jinan City, Shandong Province Patentee before: Shandong high speed Group Co.,Ltd. Patentee before: CHANG'AN University Patentee before: Qilu Communications Construction Group Co., Ltd |