Dynamic rotation friction coefficient tester

Abstract

The utility model relates to the technical field of pavement anti-skid performance testing devices, in particular to a dynamic rotating friction coefficient tester which is characterized in that a control device is used for controlling a spraying device and a temperature adjusting device to simulate a rainfall environment and a temperature environment in a friction coefficient testing process; then different types of asphalt pavements can be simulated by arranging the rut plate, and finally the friction coefficient test is completed through the friction coefficient test device, so that the technical effect of testing the skid resistance of different types of asphalt pavements under multiple environmental factors is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to road surface anti -skidding performance testing arrangement technical field, concretely relates to a dynamic rotation friction coefficient tester. BACKGROUND

[0002] With the continuous development of road traffic industry in our country, driving safety has been paid more and more attention.Asphalt pavement has wide application in our country, and its anti -skidding performance has been an important factor influencing road driving safety.Studies have shown that if the road surface anti -skidding level is improved by 10%, the traffic accident rate will be reduced by 13%.Therefore, accurately evaluating the anti -skidding performance of asphalt pavement under the action of various factors can provide theoretical support for improving the anti -skidding performance of pavement and greatly guarantee driving safety.

[0003] The traditional evaluation method of asphalt pavement anti -skidding performance mainly determines the friction coefficient of the road surface, and the test instrument mainly includes a pendulum friction tester and a dynamic rotation friction tester.But the traditional method has obvious defects, such as the pendulum friction tester and the dynamic rotation friction tester need to have special personnel and equipment to sprinkle water on the road surface to be tested to simulate the rain environment during the test process, which is complex, low in efficiency and cannot quantify the rainfall intensity.Furthermore, the traditional method is tested and analyzed on the built road surface, and cannot verify the anti -skidding performance of the road surface in the design stage in advance;In addition, studies have shown that the change of road surface anti -skidding coefficient mainly depends on the thickness of water film, and with the increase of rainfall intensity, the water film on the road surface becomes thick, and the anti -skidding coefficient will show a downward trend;And the environmental temperature will affect the evaporation of water on the road surface, and then affect the thickness of water film and the anti -skidding coefficient.The traditional test instrument can only test under single environmental temperature, rainfall intensity, personnel operation and other factors, and has the defect that it cannot simulate multiple environmental factors to measure the anti -skidding performance of different types of asphalt pavement. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a dynamic rotation friction coefficient tester, so as to achieve the technical effect of testing the anti -skidding performance of different types of asphalt pavement under multiple environmental factors.

[0005] The utility model discloses a dynamic rotation friction coefficient tester, which comprises:

[0006] A heat preservation box is arranged in the heat preservation box.

[0007] A first mounting plate is arranged in the heat preservation box.

[0008] The friction coefficient testing device comprises a pushing part, a driving part, a rotating disc, a first rubber block and a rut plate, the pushing part, the driving part and the rotating disc are sequentially connected, the first rubber block is arranged on the rotating disc, the rut plate is fixedly arranged on the first mounting plate, the first rubber block and the rut plate are oppositely arranged, the rotating disc and the rut plate are arranged along the horizontal direction, and the pushing part and the driving part are arranged along the vertical direction.

[0009] The spraying device is arranged in the heat preservation box, and the spraying device sprays towards the rut plate;

[0010] The temperature adjusting device is arranged in the heat preservation box, and the temperature adjusting device adjusts the temperature in the heat preservation box.

[0011] The control device comprises a pressure sensor and an editable logic controller, the pressure sensor is arranged at the connection position of the driving part and the rotating disc, and the editable logic controller is electrically connected with the friction coefficient testing device, the spraying device, the temperature adjusting device and the pressure sensor.

[0012] Preferably, the spraying device comprises two spraying devices, and the two spraying devices are oppositely arranged on the two sides of the first mounting plate.

[0013] Preferably, the spraying device comprises a spray head, a water storage tank and a first connecting pipe, the spray head is arranged towards the rut plate, the water storage tank is arranged below the first mounting plate, one end of the first connecting pipe is communicated with the spray head, and the other end of the first connecting pipe is communicated with the water storage tank.

[0014] Preferably, the spraying device further comprises a spraying circulating assembly, the spraying circulating assembly comprises a second connecting pipe and a drain hole, the drain hole is arranged on the first mounting plate, and a water pump is arranged on the water storage tank, the water outlet end of the water pump is communicated with the spray head through the first connecting pipe, and the water inlet end of the water pump is communicated with the water storage tank through the second connecting pipe.

[0015] Preferably, the spraying circulating assembly further comprises four water baffles, and the four water baffles are arranged around the first mounting plate.

[0016] Preferably, the temperature adjusting device comprises an electric heating wire, an air outlet and a fan, the electric heating wire is arranged on one side of the fan, and the air outlet is arranged on the other side of the fan.

[0017] Preferably, the temperature adjusting device further comprises a temperature sensor, and the temperature sensor is electrically connected with the editable logic controller.

[0018] Preferably, the device further comprises two clamping devices, the two clamping devices are respectively arranged on the two sides of the first mounting plate, and the clamping device comprises a first fixed plate, the first fixed plate is connected with the first mounting plate, and a threaded hole is arranged on the first fixed plate; a bolt is arranged on the threaded hole, and the bolt is screwed with the threaded hole; and a limiting block is arranged on the end of the bolt close to the rut plate.

[0019] Preferably, the clamping device further comprises a second rubber block arranged on the limiting block.

[0020] Preferably, the pushing part is an electric hydraulic push rod, or the driving part is a driving motor.

[0021] The utility model discloses a first through control device control spray device and temperature adjusting device simulate the precipitation environment and temperature environment in the friction coefficient test process, then through setting rut plate can simulate different kinds of asphalt pavement, finally through the friction coefficient testing device complete the test of friction coefficient, thereby realize the technical effect of simulating the anti -skid performance of different kinds of asphalt pavement under multiple environmental factors. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawing needed to be used in the embodiment, and obviously, the drawing in the following description is only some embodiments of the utility model, and for the ordinary skilled person in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0023] Figure 1 It is the structure schematic diagram of the first visual angle disclosed by the first embodiment of the utility model;

[0024] Figure 2 It is the structure schematic diagram of the second visual angle disclosed by the second embodiment of the utility model;

[0025] Figure 3 It is the structure schematic diagram of the spray circulation assembly disclosed by the fifth embodiment of the utility model.

[0026] Reference signs:

[0027] 1- incubator;

[0028] 2- temperature adjusting device, 21 electric heating wire, 22- fan, 23- air outlet;

[0029] 3- friction coefficient testing device, 31- electric hydraulic push rod, 32- driving motor, 33- rotary table, 34- first rubber block, 35- rut plate;

[0030] 4-spraying device, 41-spraying circulating assembly, 411-spraying head, 412-first connecting pipe, 413-pumping device, 414-second connecting pipe, 42-water storage tank;

[0031] 5-control device, 51-pressure sensor, 52-temperature sensor, 53-programmable logic controller;

[0032] 6-first fixing plate;

[0033] 7-first mounting plate, 71-drainage hole, 72-water baffle;

[0034] 8-clamping device, 81-second rubber block, 82-limiting block, 83-bolt. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0036] In the present application, the orientation or positional relationship indicated by "up", "down", "outside" and the like is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0037] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "up" can also be used to indicate a certain dependent relationship or connection relationship in some cases. Those of ordinary skill in the art can understand the specific meaning of these terms in the present application according to the specific situation.

[0038] In addition, the terms "mounting", "setting", "provided with", and "connected" should be understood broadly. For example, it can be fixed connection, detachable connection, or integral structure; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through an intermediate medium, or internal communication between two devices, elements or components. Those of ordinary skill in the art can understand the specific meaning of the above-mentioned terms in the present application according to the specific situation.

[0039] In addition, the terms "first", "second" and the like are used merely to distinguish different devices, elements or components (which can be of the same or different type) and do not imply relative importance or quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "a plurality" is two or more.

[0040] The utility model discloses a concept for:

[0041] The conventional testing instrument can only test under single environmental temperature, rainfall intensity, personnel operation and other factors, and has the defect of being unable to simulate multiple environmental factors to measure the skid resistance of different kinds of asphalt pavements.

[0042] In view of the above-mentioned defects, the technical problem solved by the present application is how to simulate multiple environmental factors to test the skid resistance of different kinds of asphalt pavements.

[0043] The present application simulates the precipitation environment and temperature environment in the friction coefficient test process by controlling the spraying device and the temperature adjusting device through the control device, then simulates different kinds of asphalt pavements by setting the rutting plate, and finally completes the test of the friction coefficient through the friction coefficient testing device, so as to realize the technical effect of simulating multiple environmental factors to test the skid resistance of different kinds of asphalt pavements.

[0044] Specifically,

[0045] Please refer to Figures 1 to 2 The utility model discloses a first embodiment of a dynamic rotary friction coefficient tester, which comprises:

[0046] The heat preservation box 1 is made of heat preservation material, so that a sealed test environment is formed inside the heat preservation box 1, and the temperature environment inside the heat preservation box 1 is less affected by the outside world.

[0047] The first mounting plate 7 is arranged in the heat preservation box 1. Figure 3 The first mounting plate 7 can be rectangular in shape, and two connecting plates can be arranged on the opposite sides of the first mounting plate 7 along the length direction (i.e. Figure 3 the direction represented by the X-axis in the accompanying drawings) of the first mounting plate 7, and the first mounting plate 7 is fixedly installed in the heat preservation box 1 through the two connecting plates, or two connecting plates can be arranged on the opposite sides of the first mounting plate 7 along the width direction (i.e.

[0048] A friction coefficient testing device 3, which comprises a pushing part, a driving part, a rotating disc 33, a first rubber block 34 and a rut plate 35, the pushing part, the driving part and the rotating disc 33 are connected in sequence, specifically, the pushing part is installed on the upper side wall inside the heat preservation box 1, the driving part is installed at the lower end of the pushing part, the rotating disc 33 is installed at the lower end of the driving part, the first rubber block 34 is arranged on the rotating disc 33, the rut plate 35 is fixedly arranged on the first mounting plate 7, and the first rubber block 34 and the rut plate 35 are arranged oppositely, specifically, in order to make the first rubber block 34 on the rotating disc 33 fully contact with the rut plate 35, the number of the first rubber block 34 is several, and the several first rubber blocks 34 are evenly installed on the lower surface of the rotating disc 33, the rotating disc 33 and the rut plate 35 are arranged along the horizontal direction (i.e. the X-axis direction in the first and second drawings), the pushing part and the driving part are arranged along the vertical direction (i.e. the Y-axis direction in the first and second drawings), and the horizontal direction and the vertical direction are perpendicular to each other. Figure 1 Figure 1

[0049] A spraying device 4, which is arranged in the heat preservation box 1 and sprays towards the rut plate 35;

[0050] A temperature adjusting device 2, which is arranged in the heat preservation box 1 and adjusts the temperature in the heat preservation box 1;

[0051] A control device 5, which comprises a pressure sensor 51 and an editable logic controller 53, the pressure sensor 51 is arranged at the connection between the driving part and the rotating disc 33, the editable logic controller 53 is electrically connected with the friction coefficient testing device 3, the spraying device 4, the temperature adjusting device 2 and the pressure sensor 51 respectively, specifically, the pushing part, the driving part, the water pump 413, the electric heating wire 21 and the fan 22 are electrically connected with the editable logic controller 53 respectively.

[0052] ​​In this technical solution, firstly, a spraying device 4 and a temperature regulating device 2 are respectively installed in the insulation box 1, and the spraying device 4 and the temperature regulating device 2 are electrically connected to the programmable logic controller 53. That is, the programmable logic controller 53 can control the spraying device 4 to spray the rutting plate 35 to simulate the rainfall environment during the friction coefficient test, and the programmable logic controller 53 can control the temperature regulating device 2 to regulate the temperature inside the insulation box 1 to simulate the temperature environment during the friction coefficient test. Secondly, the rutting plate 35 is set as the test tool in the test process. Since the rutting plate 35 is an important test tool for evaluating the rutting resistance of asphalt mixtures under simulated road traffic conditions, different rutting plates 35 can be selected as test tools according to different types of asphalt pavement, thereby simulating different types of asphalt pavement in the friction system test process. Finally, the rutting plate 35 is fixedly installed on the first mounting plate 7. A pushing part, a driving part, and a turntable 33 are sequentially connected above the rutting plate 35. The turntable 33 is equipped with a first rubber mat opposite to the rutting plate 35. The first rubber block 34 is positioned horizontally, while the turntable 33 and the rut plate 35 are positioned vertically. The friction coefficient testing device 3 is electrically connected to the programmable logic controller 53. The programmable logic controller 53 can control the pusher to move the turntable 33, causing the first rubber block 34 on the turntable 33 to contact the rut plate 35. Due to the aforementioned directional constraints, the pushing force applied by the pusher is applied vertically to the contact surface between the first rubber block 34 and the rut plate 35. This pushing force is then recorded. The programmable logic controller 53 controls the drive unit to drive the turntable 33 to rotate, causing the first rubber block 34 on the turntable 33 to rotate relative to the rut plate 35. At the same time, the pressure sensor 51 set at the connection between the drive unit and the turntable 33 collects the frictional force between the first rubber block 34 and the rut plate 35. Finally, the friction coefficient can be obtained by the ratio between the friction force and the thrust. The friction coefficient can be used to evaluate the anti-skid performance of asphalt pavement, thereby achieving the technical effect of simulating the anti-skid performance of different types of asphalt pavement under multiple environmental factors.

[0053] To better simulate the environment of rainfall, such as Figure 2 As shown, the second embodiment of this utility model proposes a dynamic rotational friction coefficient measuring instrument. Based on the first embodiment, the spraying device 4 includes two devices, which are respectively arranged opposite to each other on both sides of the first mounting plate 7. Specifically, when the first mounting plate 7 is rectangular, the two spraying devices 4 can spray along the length direction of the first mounting plate 7 (i.e., along the attached...). Figure 3 The two spray devices 4 are respectively arranged on both sides of the first mounting plate 7 in a relatively opposite manner (the direction indicated by the X-axis), or the two spray devices 4 can be arranged along the width direction of the first mounting plate 7 (i.e., the attached direction). Figure 3The two spraying devices 4 are arranged on the two sides of the first mounting plate 7 in a relative manner, respectively.

[0054] In the embodiment, the two spraying devices 4 are arranged on the two sides of the first mounting plate 7 in a relative manner, respectively, and the spraying devices 4 spray the rut plate 35 at the same time, so that the water sprayed by the spraying devices 4 can comprehensively cover the rut plate 35, thereby simulating a better rainfall environment.

[0055] In order to realize the spraying action of the spraying device, as shown in Figure 2 The third embodiment of the utility model provides a dynamic rotating friction coefficient tester, and on the basis of the second embodiment, the spraying device 4 comprises a spray head 411, the spray end of the spray head 411 is arranged towards the rut plate 35; a water storage tank 42, the water storage tank 42 is arranged below the first mounting plate 7; a first connecting pipe 412, one end of the first connecting pipe 412 is communicated with the spray head 411, the other end of the first connecting pipe 412 is communicated with the water storage tank 42.

[0056] In the embodiment, the water storage tank 42 and the spray head 411 are communicated through the first connecting pipe 412, and the spray end of the spray head 411 is arranged towards the rut plate 25, so that the water in the water storage tank 42 can be guided to the spray head 411 through the first connecting pipe 412, thereby the water can be sprayed on the rut plate 25 through the spray head 411, thereby simulating the rainfall environment.

[0057] In order to realize the recycling of the sprayed water, as shown in Figure 2 and 3 The fourth embodiment of the utility model provides a dynamic rotating friction coefficient tester, and on the basis of the third embodiment, the spraying device 4 further comprises a spraying circulation assembly 41, the spraying circulation assembly 41 comprises a second connecting pipe 414; a drain hole 71, the drain hole 71 is arranged on the first mounting plate 7; specifically, in order to make the sprayed water falling on the first mounting plate 7 flow into the water storage tank 42 faster, the number of drain holes 71 is several, and the several drain holes 71 are uniformly distributed on the first mounting plate 7. A water pump 413 is arranged on the water storage tank 42, the water outlet end of the water pump 413 is communicated with the spray head 411 through the first connecting pipe 412, and the water inlet end of the water pump 413 is communicated with the water storage tank 42 through the second connecting pipe 414.

[0058] In this embodiment, first, by setting a plurality of drainage holes 71 on the first mounting plate 7 located above the water storage tank 42, the spray water falling on the first mounting plate 7 can be introduced into the water storage tank 42 through the guidance of the drainage hole 71, second, by setting the water pump 413, and the water outlet of the water pump 413 is communicated with the spray head 411 through the first connecting pipe 412, and the water inlet is communicated with the water storage tank 42 through the second connecting pipe 414, the spray water introduced into the water storage tank 42 through the drainage hole 71 can be pumped out by the water pump 413, and then transported to the spray head 411 through the first connecting pipe 412 and the second connecting pipe 414, thereby realizing the recycling of the spray water.

[0059] In order to realize the collection of the spray water sprayed by the spray head, as shown in the first embodiment of the utility model, the spray circulating assembly 41 comprises a first mounting plate 7 and a plurality of drainage holes 71. Figure 3 As shown in the fifth embodiment of the utility model, the dynamic rotating friction coefficient tester further comprises four water baffles 72, and the four water baffles 72 are arranged around the first mounting plate 7.

[0060] In this embodiment, four water baffles 72 are arranged around the first mounting plate 7, so that a recessed water storage area is formed on the first mounting plate 7, thereby facilitating the collection of the spray water sprayed by the spray head.

[0061] In order to realize the adjustment of the temperature in the heat preservation box, as shown in the second embodiment of the utility model, the temperature adjusting device 2 comprises an electric heating wire 21, an air outlet 23 and a fan 22. Figure 2 As shown in the sixth embodiment of the utility model, the dynamic rotating friction coefficient tester further comprises two temperature adjusting devices 2, and the two temperature adjusting devices 2 are arranged at two ends of the upper side wall in the heat preservation box 1.

[0062] In this embodiment, when the temperature of the test environment in the heat preservation box 1 is higher than the set temperature, the programmable logic controller 53 turns off the electric heating wire 21 and controls the fan 22 to run, and the airflow generated by the fan 22 is transmitted into the heat preservation box 1 through the air outlet 23, so as to cool the temperature in the heat preservation box 1; when the temperature of the test environment in the heat preservation box 1 is lower than the set temperature, the programmable logic controller 53 controls the electric heating wire 21 to generate heat, and controls the fan 22 to run, and the heat generated by the electric heating wire 21 is transmitted into the heat preservation box 1 through the air outlet 23, so as to heat the temperature in the heat preservation box 1.

[0063] In order to realize the monitoring of the temperature in the heat preservation box, as shown in the third embodiment of the utility model, the temperature monitoring device 3 comprises a temperature sensor 31 and a temperature display device 32.Figure 2 The seventh embodiment of the utility model discloses a dynamic rotating friction coefficient tester, and on the basis of the sixth embodiment, the temperature adjusting device 2 further includes a temperature sensor 52, and the temperature sensor 52 is electrically connected with the editable logic controller 53.

[0064] In the embodiment, the temperature sensor 52 is arranged, and the temperature sensor 52 is electrically connected with the editable logic controller 53, temperature data is collected by the temperature sensor 52, and the temperature data is transmitted to the editable logic controller 53, so that the temperature monitoring is realized.

[0065] In order to realize the clamping and fixing of the rut plate, like Figure 2 The eighth embodiment of the utility model discloses a dynamic rotating friction coefficient tester, and on the basis of the first embodiment, further includes: two clamping devices 8, two clamping devices 8 are oppositely arranged on the two sides of the first mounting plate 7, the clamping device 8 includes: a first fixed plate 6, the first fixed plate 6 is connected with the first mounting plate 7, and the first fixed plate 6 is provided with a threaded hole; bolt 83, the bolt 83 is arranged in the threaded hole, and the bolt 83 is screwed with the threaded hole; limiting block 82, the limiting block 82 is arranged at the end of the bolt 83 close to the rut plate 35.

[0066] Specifically, in order to simplify the structure, the first mounting plate 7 can also be installed in the heat preservation box 1 through the first fixed plate 6 arranged on the two sides thereof.

[0067] In the embodiment, the first fixed plate 6 is oppositely arranged on the two sides of the first mounting plate 7, the threaded hole is arranged on the first fixed plate 6, the bolt 83 is screwed in the threaded hole, and the limiting block 82 is arranged at the end of the bolt 83 close to the rut plate 35, so that the limiting block 82 can be driven to approach the rut plate 35 by rotating the bolt 83, the rut plate 35 is provided with clamping force by the limiting block 82, and the fixing of the rut plate 35 is realized.

[0068] Preferably, the clamping device 8 further includes: a second rubber block 81, and the second rubber block 81 is arranged on the limiting block 82.

[0069] Preferably, the pushing part is an electric hydraulic push rod 31, or the driving part is a driving motor 32.

[0070] The working principle of the embodiment is as follows:

[0071] The incubator 1 encloses and wraps the test environment, the rutting board 35 is fixed above the first mounting plate 7 through the action of the clamping device 8, the temperature of the temperature adjusting device 2, the precipitation intensity of the spraying device 4, the thrust of the electric hydraulic push rod 31 and the rotating speed of the driving motor 32 are set on the editable logic controller 53, the temperature adjusting device 2 starts to adjust the temperature first, after the set temperature is reached, the spraying device 4 starts to simulate the rainfall environment, the electric hydraulic push rod 31 drives the rotating disc 33 to move downwards, the first rubber block 34 on the rotating disc 33 compacts the rutting board 35, the driving motor 32 drives the first rubber block 34 to rotate, and the friction force of the first rubber block 34 relative to the rutting board 35 is tested through the pressure sensor 51, finally, the friction coefficient can be obtained through the ratio between the friction force and the thrust, the friction coefficient can realize the evaluation on the anti-skid performance of the asphalt pavement, so that the technical effect that the anti-skid performance of different types of asphalt pavements under multiple environmental factors is measured is achieved.

[0072] The various embodiments in the specification are described in a progressive manner, the same and similar parts between the various embodiments can be referred to each other, and each embodiment mainly explains the difference from other embodiments. The above is only the embodiment of the utility model, and is not used for limiting the utility model. For those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the right of the utility model.

Claims

1. A dynamic rolling friction coefficient meter characterized by comprising: Include: Incubator (1); First mounting plate (7), the first mounting plate (7) is provided in the incubator (1); Friction coefficient testing device (3), the friction coefficient testing device (3) includes a push part, a driving part, a turntable (33), a first rubber block (34) and a rut plate (35), the push part, the driving part and the turntable (33) are sequentially connected, the first rubber block (34) is provided on the turntable (33), the rut plate (35) is fixedly provided on the first mounting plate (7), and the first rubber block (34) and the rut plate (35) are oppositely arranged, the turntable (33) and the rut plate (35) are both arranged along the horizontal direction, and the push part and the driving part are both arranged along the vertical direction; Spraying device (4), the spraying device (4) is arranged in the incubator (1), and the spraying device (4) sprays towards the rut plate (35); Temperature adjusting device (2), the temperature adjusting device (2) is arranged in the incubator (1), and the temperature adjusting device (2) adjusts the temperature in the incubator (1); Control device (5), the control device (5) includes a pressure sensor (51) and an editable logic controller (53), the pressure sensor (51) is arranged at the connection between the driving part and the turntable (33), and the editable logic controller (53) is electrically connected with the friction coefficient testing device (3), the spraying device (4), the temperature adjusting device (2) and the pressure sensor (51) respectively.

2. The dynamic rotating coefficient of friction tester of claim 1, wherein: The spraying device (4) includes two, and two spraying devices (4) are oppositely arranged on the two sides of the first mounting plate (7).

3. The dynamic rotating coefficient of friction tester of claim 2, wherein, The spraying device (4) includes: Spray head (411), the spray end of the spray head (411) is arranged towards the rut plate (35); Water storage tank (42), the water storage tank (42) is arranged below the first mounting plate (7); First connecting pipe (412), one end of the first connecting pipe (412) is communicated with the spray head (411), and the other end of the first connecting pipe (412) is communicated with the water storage tank (42).

4. The dynamic rotating coefficient of friction tester of claim 3, wherein, The spraying device (4) further includes a spraying circulating assembly (41), and the spraying circulating assembly (41) includes: Second connecting pipe (414); Drainage hole (71), the drainage hole (71) is arranged on the first mounting plate (7); Water pump (413), the water pump (413) is arranged on the water storage tank (42), the water outlet end of the water pump (413) is communicated with the spray head (411) through the first connecting pipe (412), and the water inlet end of the water pump (413) is communicated with the water storage tank (42) through the second connecting pipe (414).

5. The dynamic rotating coefficient of friction tester of claim 4, wherein, The spraying circulating assembly (41) further includes four water baffles (72), and four water baffles (72) are arranged around the first mounting plate (7) respectively.

6. The dynamic rotating coefficient of friction tester of claim 1, wherein, The temperature adjusting device (2) includes: Electric heating wire (21); Air outlet (23); A fan (22), the electric heating wire (21) is arranged at one side of the fan (22), and the air outlet (23) is arranged at the other side of the fan (22).

7. The dynamic rotating coefficient of friction tester of claim 6, wherein, The temperature adjusting device (2) further comprises a temperature sensor (52) electrically connected with the editable logic controller (53).

8. The dynamic rotating coefficient of friction tester of claim 1, wherein, Further comprising: Two clamping devices (8), two clamping devices (8) are respectively arranged on both sides of the first mounting plate (7), and the clamping device (8) comprises: A first fixed plate (6) connected with the first mounting plate (7), and a threaded hole is arranged on the first fixed plate (6); A bolt (83) arranged in the threaded hole, and the bolt (83) is screwed with the threaded hole; A limiting block (82) arranged at the end of the bolt (83) close to the rut plate (35).

9. The method of claim 8, wherein, The clamping device (8) further comprises: A second rubber block (81) arranged on the limiting block (82).

10. The dynamic rotating coefficient of friction tester of claim 1, wherein, The pushing part is an electric hydraulic push rod (31), or the driving part is a driving motor (32).

Images