Road surface friction force testing device

Abstract

The utility model discloses a pavement friction force testing device. The road surface friction force testing device comprises a frame body, and a friction force detection assembly, a heating assembly, a humidifying assembly, a freezing assembly and a control assembly which are arranged on the frame body, wherein the friction force detection assembly is used for detecting the friction force of a road surface; the heating assembly is used for heating the road surface; the humidifying assembly is used for humidifying the road surface; the friction force detection assembly is arranged on the frame body through a first telescopic mechanism, and the first telescopic mechanism drives the friction force detection assembly to move in the direction close to or away from the road surface; the control assembly is electrically connected with the friction force detection assembly, the heating assembly, the humidifying assembly, the freezing assembly and the first telescopic mechanism. In the embodiment, the pavement friction force testing device can simulate various different environmental road conditions, and pavement friction force testing under different environmental road conditions is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of road performance testing, and further relates to a road friction force testing device. Background Art

[0002] With the rapid development of China's economy and the rapid increase in the number of various types of cars, highways, as one of the indispensable logistics channels, have achieved unprecedented development. The continuous construction of highways has greatly promoted the development of the transportation industry, but at the same time, the continuous occurrence of traffic accidents has also aroused people's increasing attention to driving safety. The occurrence of traffic accidents is largely due to the lack of anti-skid performance of the road surface. Therefore, the anti-skid ability of the road surface has become an important evaluation indicator for evaluating the performance of the road surface. Existing friction test devices can usually only detect friction under normal temperature conditions, but cannot detect friction on wet and icy roads.

[0003] Therefore, it is necessary to design a road friction test device to solve the above problems. Summary of the invention

[0004] In view of the above technical problems, the purpose of the utility model is to provide a road friction test device that can simulate various environmental road conditions and realize road friction tests under different environmental road conditions.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a road friction test device, comprising a frame and a friction detection component for detecting the friction of the road surface, a heating component for heating the road surface, a humidification component for humidifying the road surface, a freezing component for freezing the road surface and a control component arranged on the frame;

[0006] The friction force detection component is arranged on the frame through a first telescopic mechanism, and the first telescopic mechanism drives the friction force detection component to move toward or away from the road surface;

[0007] The control component is electrically connected to the friction force detection component, the heating component, the humidification component, the freezing component, and the first telescopic mechanism respectively.

[0008] In some embodiments, the frame includes a mounting frame and a plurality of support columns, the plurality of support columns are fixed at intervals at the bottom of the mounting frame, and the friction force detection component, the heating component, the humidification component, and the freezing component are respectively arranged on the mounting frame;

[0009] Each of the support columns is provided with a second telescopic mechanism, and the second telescopic mechanism is used to adjust the height and horizontal state of the mounting frame.

[0010] In some embodiments, the frame further includes a protective cover, which covers the circumference of the friction detection component, the heating component, the humidification component, and the freezing component, and the control component is disposed on the upper side of the protective cover.

[0011] In some embodiments, the control assembly includes a control box and a display screen and a control panel disposed on the control box, wherein the display screen is used to display data, and the control panel is used to set parameters;

[0012] And / or, the heating component is an electric heating device, and the electric heating device can heat the road surface under the protective cover.

[0013] In some embodiments, the friction force detection assembly includes a conveying mechanism, a friction strip component and a sensor component, wherein the conveying mechanism is connected to the friction strip component and is used to control the friction between the friction strip component and the road surface;

[0014] The sensor component is arranged on the friction strip component and connected to the control component. The sensor component is used to obtain the force information of the friction strip component and send it to the control component.

[0015] In some embodiments, the conveying mechanism includes a seat body and a driving wheel and a driven wheel spaced apart on the seat body, and the seat body is connected to an end of the first telescopic mechanism away from the frame body;

[0016] The friction strip component includes a conveyor belt and a plurality of friction strips, wherein the plurality of friction strips are arranged at intervals along the length direction of the conveyor belt, and the conveyor belt is adapted to be mounted on the driving wheel and the driven wheel, so that the driving wheel can drive the conveyor belt to rotate;

[0017] The sensor component includes a plurality of sensors, and the plurality of sensors are respectively mounted on the corresponding friction strips and connected to the control assembly.

[0018] In some embodiments, the humidification component includes a water tank, a first pipeline and a first nozzle, the water tank is fixed on the frame, the first nozzle is connected to the water tank through the first pipeline, and the control component is connected to the first nozzle for controlling the switch and water spraying amount of the first nozzle.

[0019] In some embodiments, the freezing assembly includes a liquid nitrogen box, a second pipeline and a second nozzle, the liquid nitrogen box is fixed on the frame, the second nozzle is connected to the liquid nitrogen box through the second pipeline, and the control assembly is connected to the second nozzle for controlling the switch and nitrogen spraying amount of the second nozzle.

[0020] In some embodiments, it further comprises:

[0021] A moving mechanism, wherein the moving mechanism is arranged on the frame;

[0022] The first pipeline and the second pipeline are hoses respectively, and the first nozzle and the second nozzle are respectively arranged on the moving mechanism, so that the moving mechanism can drive the first nozzle and the second nozzle to move respectively.

[0023] In some embodiments, the moving mechanism includes a track, a first slider, a first driving mechanism, a second slider, and a second driving mechanism, the track is fixed on the frame, and the first slider and the second slider are respectively adapted to be connected to the track;

[0024] The first driving mechanism is connected to the first slider, and the first slider is connected to the first nozzle, so that the first driving mechanism can drive the first nozzle to reciprocate along the length direction of the track;

[0025] The second driving mechanism is connected to the second slider, and the second slider is connected to the second nozzle, so that the second driving mechanism can drive the second nozzle to reciprocate along the length direction of the track.

[0026] Compared with the prior art, the road friction test device provided by the utility model has the following beneficial effects:

[0027] In the utility model, the control component controls the operation of each component in the device, the heating component heats the road surface to simulate high temperature road conditions, the humidifying component humidifies the road surface to simulate wet road conditions, and the freezing component freezes the humidified road surface to simulate icy road conditions; the second telescopic mechanism adjusts the height and horizontal state of the mounting frame, the first telescopic mechanism controls the contact state between the friction force detection component and the road surface, and then obtains the force exerted on each friction strip through the sensor on the friction strip, and the data is transmitted to the control component for processing to obtain the friction force of the road or roadbed surface; the device can simulate various environmental road conditions and realize road friction force testing under different environmental road conditions, the test is comprehensive, and the test cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0029] Figure 1 It is a structural schematic diagram of a road friction force testing device according to a preferred embodiment of the utility model;

[0030] Figure 2It is a structural schematic diagram of a road friction force testing device from one perspective in a preferred embodiment of the utility model;

[0031] Figure 3 It is a structural schematic diagram of another preferred embodiment of the utility model from another perspective inside the road friction testing device.

[0032] Description of Figure Numbers:

[0033] Frame 1, mounting frame 11, first telescopic mechanism 111, support column 12, second telescopic mechanism 121, protective cover 13, track 14, friction force detection component 2, conveying mechanism 21, driving wheel 211, driven wheel 212, friction strip component 22, conveyor belt 221, friction strip 222, sensor component 23, sensor 231, humidification component 3, water tank 31, first pipeline 32, first nozzle 33, freezing component 4, liquid nitrogen tank 41, second pipeline 42, second nozzle 43, heating component 5, control component 6, control box 61, display screen 62, control panel 63. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0035] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0036] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0037] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0038] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0039] In one embodiment, the reference specification Figures 1 to 3 The utility model provides a road friction test device, comprising a frame 1 and a friction detection component 2 for detecting friction on the road surface, a heating component 5 for heating the road surface, a humidification component 3 for humidifying the road surface, a freezing component 4 for freezing the road surface, and a control component 6. The friction detection component 2 is arranged on the frame 1 through a first telescopic mechanism 111, and the first telescopic mechanism 111 drives the friction detection component 2 to move toward or away from the road surface; the control component 6 is electrically connected to the friction detection component 2, the heating component 5, the humidification component 3, the freezing component 4, and the first telescopic mechanism 111.

[0040] In the utility model, the control component 6 controls the operation of each component in the device, the heating component 5 heats the road surface to simulate high temperature road conditions, the humidifying component 3 humidifies the road surface to simulate wet road conditions, and the freezing component 4 freezes the humidified road surface to simulate icy road conditions; the first telescopic mechanism 111 controls the contact state between the friction detection component 2 and the road surface, and then the friction detection component 2 detects the friction of the road surface, and the data is transmitted to the control component 6 for processing to obtain the friction of the road or roadbed surface; the device can simulate various environmental road conditions and realize road friction tests under different environmental road conditions.

[0041] In one embodiment, the reference specification Figure 1 , Figure 2The frame 1 includes a mounting frame 11 and a plurality of support columns 12. The plurality of support columns 12 are fixed at intervals at the bottom of the mounting frame 11. Generally, in order to ensure the stability of the device, at least three support columns 12 are generally provided. The frame 1 serves as the main mounting structure of the device, and it can also be provided as a box structure. The friction detection component 2, the heating component 5, the humidification component 3, and the freezing component 4 are respectively provided on the mounting frame 11. A second telescopic mechanism 121 is provided on each support column 12, and the second telescopic mechanism 121 is used to adjust the height and horizontal state of the mounting frame 11. The second telescopic mechanism 121 can be provided as a manually adjustable telescopic structure, or it can be an automatically adjustable telescopic mechanism controlled by the control component 6, such as an electric push rod, a telescopic cylinder, etc.

[0042] Furthermore, the frame 1 also includes a protective cover 13, which is coated on the circumference of the friction detection component 2, the heating component 5, the humidification component 3, and the freezing component 4, and the control component 6 is arranged on the upper side of the protective cover 13. The protective cover 13 can protect the various components on the frame 1 to prevent the components from being damaged and to block dust. The control component 6 serves as the main control unit of the device, which includes a control box 61 and a display screen 62 and a control panel 63 arranged on the control box 61. The control box 61 is provided with components such as circuit boards and control circuits. The display screen 62 is used to display data, and the control panel 63 is used to set parameters. The display screen 62 can also be set as a touch screen, that is, the display screen 62 and the control panel 63 are combined into one. By setting the control component to control the operation of each component in the device, the automatic test of the road friction can be realized, making it simple to operate and convenient to use.

[0043] In one embodiment, the reference specification Figure 1 , Figure 2 The friction force detection component 2 includes a conveying mechanism 21, a friction strip component 22 and a sensor component 23. The conveying mechanism 21 is connected to the friction strip component 22 and is used to control the friction between the friction strip component 22 and the road surface; the sensor component 23 is arranged on the friction strip component 22 and is connected to the control component 6. The sensor component 23 is used to obtain the force information of the friction strip component 22 and send it to the control component 6.

[0044] Specifically, the conveying mechanism 21 includes a seat body and a driving wheel 211 and a driven wheel 212 arranged on the seat body at intervals, and the seat body is connected to an end of the first telescopic mechanism 111 away from the frame body 1. The driving wheel 211 can be driven by a driving motor, that is, the driving motor drives the driving wheel 211 to rotate.

[0045] The friction strip component 22 includes a conveyor belt 221 and a plurality of friction strips 222, the plurality of friction strips 222 are arranged at intervals along the length direction of the conveyor belt 221, and the conveyor belt 221 is adapted to be mounted on the driving wheel 211 and the driven wheel 212, so that the driving wheel 211 can drive the conveyor belt 221 to rotate, thereby driving the friction strips 222 to rub against the road surface. Of course, the conveying mechanism 21 can also be set as a crawler mechanism to drive the friction strips 222 to circulate.

[0046] The sensor component 23 includes a plurality of sensors 231, which are respectively installed on the corresponding friction strips 222 and connected to the control component 6. That is, each friction strip 222 is provided with a sensor 231, and the first telescopic mechanism 111 controls the contact state between the friction strip 222 and the road surface, and then obtains the force exerted on each friction strip 222 through the sensor 231 on the friction strip 222, and the data is transmitted to the control component 6 for processing to obtain the friction force of the road or roadbed surface.

[0047] It should be pointed out that the friction detection component 2 is described in accordance with the drawings in the specification. In actual use, other friction detection devices can also be used, as long as the structure or device can realize the friction detection of the road surface. This is only for better explanation of the present invention and should not constitute a limitation to the present invention.

[0048] In one embodiment, the reference specification Figure 3 The humidifying component 3 includes a water tank 31, a first pipeline 32 and a first nozzle 33. The water tank 31 is fixed on the frame 1. The first nozzle 33 is connected to the water tank 31 through the first pipeline 32. The control component 6 is connected to the first nozzle 33 to control the switch and water spraying amount of the first nozzle 33, so that the humidifying component 3 can humidify the road surface to simulate wet road conditions with different humidity.

[0049] The freezing component 4 includes a liquid nitrogen tank 41, a second pipeline 42 and a second nozzle 43. The liquid nitrogen tank 41 is fixed on the frame 1. The second nozzle 43 is connected to the liquid nitrogen tank 41 through the second pipeline 42. The control component 6 is connected to the second nozzle 43 to control the switch and nitrogen spraying amount of the second nozzle 43, so that the freezing component 4 can freeze the humidified road surface to simulate icy road conditions.

[0050] The heating component 5 is an electric heating device, such as an electric heating tube, which can heat the road surface under the protective cover 13, and the specific heating temperature is controllable to simulate high-temperature road conditions at different temperatures.

[0051] Furthermore, the frame 1 is also provided with a moving mechanism, which includes a track 14, a first slider, a first driving mechanism, a second slider, and a second driving mechanism. The track 14 is fixed to the frame 1, and the first slider and the second slider are respectively adapted and connected to the track 14; the first driving mechanism is provided at one end of the track 14 and connected to the first slider, and the first driving mechanism can drive the first slider to reciprocate along the axis direction of the track 14. The second driving mechanism is provided at the other end of the track 14 and connected to the second slider, and the second driving mechanism can drive the second slider to reciprocate along the axis direction of the track 14.

[0052] The first pipeline 32 and the second pipeline 42 are hoses respectively. The first nozzle 33 is fixed on the first slider, so that the first driving mechanism can drive the first nozzle 33 to reciprocate along the length direction of the track 14; the second nozzle 43 is fixed on the second slider, so that the second driving mechanism can drive the second nozzle 43 to reciprocate along the length direction of the track 14.

[0053] In this embodiment, the control component 6 controls the operation of each component in the device, the heating component 5 heats the road surface to simulate high temperature road conditions, the humidifying component 3 humidifies the road surface to simulate wet road conditions, and the freezing component 4 freezes the humidified road surface to simulate icy road conditions; the second telescopic mechanism 121 adjusts the height and horizontal state of the mounting frame 11, the first telescopic mechanism 111 controls the contact state between the friction force detection component 2 and the road surface, and then obtains the force exerted on each friction strip 222 through the sensor 231 on the friction strip 222, and the data is transmitted to the control component 6 for processing to obtain the friction force of the road or roadbed surface; the device can simulate various environmental road conditions and realize road friction force testing under different environmental road conditions, with comprehensive testing and low testing cost.

[0054] It should be pointed out that the humidifying component 3, the freezing component 4, and the heating component 5 are described corresponding to the drawings in the specification. In actual use, other environmental control devices can also be used, as long as the structure or device can simulate the road environment. This is only for better explanation of the present invention and should not constitute a limitation on the present invention.

[0055] In practical applications, the specific process of using this device to test the friction force of highway roadbed and pavement is as follows:

[0056] Determine the detection position, clean the surface of the highway or roadbed, and then place the road friction test device on the highway or roadbed; start the equipment, and control the telescopic length of multiple second telescopic mechanisms 121 through the control component 6 to keep the equipment level.

[0057] When simulating a wet state, the control component 6 controls the first nozzle 33 to move along the length direction of the track 14 to wet the entire test area;

[0058] When simulating the freezing state, the control component 6 first controls the first nozzle 33 to move along the length direction of the track 14 to wet the entire test area, and then controls the second nozzle 43 to move along the length direction of the track 14 to freeze the entire test area;

[0059] When simulating a high temperature state, the control component 6 controls the heating component 5 to heat the entire test part so that the temperature of the test part reaches the required temperature;

[0060] The control component 6 then controls the first telescopic mechanism 111 to drive the friction strip 222 to contact the surface of the road or roadbed, and then sets the running speed of the friction strip 222 in the conveying mechanism 21 to rub the surface of the road or roadbed. The sensor 231 on the friction strip 222 reads the force exerted on each friction strip 222, and the data is transmitted to the control component 6 for processing to obtain the friction force of the surface of the road or roadbed.

[0061] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0062] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred implementations of the utility model. 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 utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A road friction test device, characterized in that: It comprises a frame and a friction force detection component for detecting the friction force of a road surface, a heating component for heating the road surface, a humidifying component for humidifying the road surface, a freezing component for freezing the road surface and a control component arranged on the frame; The friction force detection component is arranged on the frame through a first telescopic mechanism, and the first telescopic mechanism drives the friction force detection component to move toward or away from the road surface; The control component is electrically connected to the friction force detection component, the heating component, the humidification component, the freezing component, and the first telescopic mechanism respectively.

2. The road friction test device according to claim 1, characterized in that: The frame body includes a mounting frame and a plurality of support columns, wherein the plurality of support columns are fixed at intervals at the bottom of the mounting frame, and the friction force detection component, the heating component, the humidification component, and the freezing component are respectively arranged on the mounting frame; Each of the support columns is provided with a second telescopic mechanism, and the second telescopic mechanism is used to adjust the height and horizontal state of the mounting frame.

3. The road friction test device according to claim 2, characterized in that: The frame also includes a protective cover, which covers the peripheral sides of the friction force detection component, the heating component, the humidification component, and the freezing component, and the control component is arranged on the upper side of the protective cover.

4. The road friction force testing device according to claim 3, characterized in that: The control assembly includes a control box and a display screen and a control panel arranged on the control box, wherein the display screen is used to display data and the control panel is used to set parameters; And / or, the heating component is an electric heating device, and the electric heating device can heat the road surface under the protective cover.

5. The road friction force testing device according to claim 1, characterized in that: The friction force detection assembly includes a conveying mechanism, a friction strip component and a sensor component, wherein the conveying mechanism is connected to the friction strip component and is used to control the friction between the friction strip component and the road surface; The sensor component is arranged on the friction strip component and connected to the control component. The sensor component is used to obtain the force information of the friction strip component and send it to the control component.

6. The road friction force testing device according to claim 5, characterized in that: The conveying mechanism comprises a seat body and a driving wheel and a driven wheel spaced apart on the seat body, wherein the seat body is connected to an end of the first telescopic mechanism away from the frame body; The friction strip component includes a conveyor belt and a plurality of friction strips, wherein the plurality of friction strips are arranged at intervals along the length direction of the conveyor belt, and the conveyor belt is adapted to be mounted on the driving wheel and the driven wheel, so that the driving wheel can drive the conveyor belt to rotate; The sensor component includes a plurality of sensors, and the plurality of sensors are respectively mounted on the corresponding friction strips and connected to the control assembly.

7. The road friction test device according to any one of claims 1 to 6, characterized in that: The humidifying component includes a water tank, a first pipeline and a first nozzle. The water tank is fixed on the frame. The first nozzle is connected to the water tank through the first pipeline. The control component is connected to the first nozzle and is used to control the switch and water spraying amount of the first nozzle.

8. The road friction force testing device according to claim 7, characterized in that: The freezing assembly includes a liquid nitrogen box, a second pipeline and a second nozzle. The liquid nitrogen box is fixed on the frame. The second nozzle is connected to the liquid nitrogen box through the second pipeline. The control assembly is connected to the second nozzle and is used to control the switch and nitrogen spraying amount of the second nozzle.

9. The road friction force testing device according to claim 8, characterized in that: Also includes: A moving mechanism, wherein the moving mechanism is arranged on the frame; The first pipeline and the second pipeline are hoses respectively, and the first nozzle and the second nozzle are respectively arranged on the moving mechanism, so that the moving mechanism can drive the first nozzle and the second nozzle to move respectively.

10. The road friction testing device according to claim 9, characterized in that: The moving mechanism comprises a track, a first slider, a first driving mechanism, a second slider and a second driving mechanism, the track is fixed on the frame, and the first slider and the second slider are respectively adapted and connected to the track; The first driving mechanism is connected to the first slider, and the first slider is connected to the first nozzle, so that the first driving mechanism can drive the first nozzle to reciprocate along the length direction of the track; The second driving mechanism is connected to the second slider, and the second slider is connected to the second nozzle, so that the second driving mechanism can drive the second nozzle to reciprocate along the length direction of the track.

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