Multi-action composite anti-stripping performance measuring instrument applicable to multiple scenes

Abstract

A multi-action composite anti-stripping performance measuring instrument applicable to multiple scenes belongs to the technical field of road measurement, a closed box is mounted at the bottom of a frame and used for being in contact with a detected road surface to provide a closed environment and a simulation environment, and a knob device is arranged at the upper end of the closed box and used for applying friction force to the detected road surface. The load control device is mounted on the frame through the lifting device, acts on the knob device and applies load to the knob device, and the negative pressure type exfoliated object collecting device is mounted on the frame and is used for collecting exfoliated objects and applying negative pressure to a detected road surface. The device is wide in application scene, can be used for measuring the anti-stripping performance of a rut plate test piece in a laboratory, can also be transported to a designated area on a road in a dragging mode, and can also be connected to a vehicle through a square opening connecting device to move along with the vehicle for multi-point measurement. The controllable horizontal knob stripping effect and the upward suction stripping effect can be sequentially applied to the road surface, and the stripping effect can be more comprehensively applied to the road surface.

Description

Technical Field

[0001] This invention belongs to the field of road measurement technology, specifically relating to a multi-functional composite anti-stripping performance measuring instrument applicable to multiple scenarios. Background Technology

[0002] Pavement spalling resistance is a crucial factor affecting traffic safety and vehicle performance. Traditional methods for assessing pavement spalling resistance typically require core samples taken from the pavement and transported to a laboratory for Kentucky divergence testing. Sampling disturbances can distort performance data, and the damage caused by core sampling is difficult to repair, resulting in significant pavement damage. Furthermore, the aforementioned equipment lacks portability and mobility, failing to meet the needs of on-site assessments. Additionally, existing spalling resistance testers often only apply a single type of spalling action, failing to comprehensively evaluate spalling resistance. Therefore, developing a multi-functional composite spalling resistance measurement instrument suitable for multiple scenarios and applicable to various situations is of significant practical importance. Summary of the Invention

[0003] The purpose of this invention is to provide a multi-functional composite anti-stripping performance measuring instrument applicable to multiple scenarios. This instrument is portable, adjustable, and comprehensively measures the anti-stripping performance of road surfaces and is suitable for various scenarios.

[0004] The technical solution adopted in this invention is:

[0005] A multi-functional composite anti-stripping performance measuring instrument applicable to multiple scenarios includes a frame, a rotary device, a load control device, a lifting device, a negative pressure stripping material collection device, and a sealed box. The sealed box is installed at the bottom of the frame to provide a closed and simulated environment in contact with the road surface being tested. The rotary device is located at the top of the sealed box to apply frictional force to the road surface being tested. The load control device is installed on the frame via the lifting device and acts on the rotary device to apply a load to it. The negative pressure stripping material collection device is installed on the frame to collect stripping material and apply negative pressure to the road surface being tested.

[0006] Furthermore, the rotary device includes a rotary motor, a motor steering speed control device, a gearbox, and a rotary friction shaft; a friction disc is provided at the bottom of the rotary friction shaft, and a horizontal knob is installed on the outer edge of the friction disc for applying friction to the road surface being tested; the rotary friction shaft is vertically installed inside the frame and connected to the load control device; a limiting frame is provided on the frame at the corresponding position of the friction disc; the rotary friction shaft is connected to the output end of the gearbox; the input end of the gearbox is connected to the rotary motor; and the rotary motor is signal-connected to the motor steering speed control device.

[0007] Furthermore, the gearbox includes a housing and a gear set disposed within the housing. The output gear in the gear set is rotatably connected to the housing via a plane bearing. The central hole of the output gear is a spline hole. The middle part of the rotating friction shaft is a spline structure. The upper and lower gaps of the spline structure pass through the housing and are connected to the spline hole of the output gear for transmission.

[0008] Furthermore, the load control device includes a load motor, a support frame, a transmission device, and a spring assembly. The support frame is mounted on the vehicle frame via a lifting device. The transmission device is mounted on the support frame and positioned at the upper end of the rotating friction shaft. A spring assembly connects the transmission device and the rotating friction shaft. The transmission device applies a vertical elastic force to the rotating friction shaft via the spring assembly. The transmission device is powered by the load motor.

[0009] Furthermore, the transmission device includes an upper platform, a lower platform, a drive gear, a chain, four lead screw assemblies, and four driven gears; the four lead screw assemblies are vertically and evenly distributed on the outside of the rotating friction shaft, and the lower ends of the four lead screw assemblies are mounted on a lifting device. The sliders of the four lead screw assemblies are connected to an upper platform. A spring assembly connects the upper platform and the lower platform. The lower platform has a central hole, through which the rotating friction shaft is connected via a roller bearing. The upper ends of the four lead screw assemblies are rotatably connected and pass through a support frame, each coaxially connected to a driven gear. The four driven gears are connected via chain drive. A drive gear is mounted on the output shaft of the load motor, and the drive gear is connected to the chain drive.

[0010] Furthermore, the lifting device includes a lifting frame, limit blocks, a cylinder, and a cylinder controller; the cylinder is vertically fixed on the vehicle frame, the telescopic end of the cylinder is located at the top and fixedly connected to the lifting frame, the lifting frame is slidably connected to the vehicle frame, a support frame for a load control device is installed on the lifting frame, multiple limit blocks are respectively located at the upper part of the lifting frame's running trajectory, the limit frame is fixed on the vehicle frame and used to limit the lifting frame, and the cylinder is signal-connected to the cylinder controller.

[0011] Furthermore, the negative pressure shedding material collection device includes an air pump, a corrugated pipe, a collection pipe, and a collection box. The air pump and the collection box are connected through the corrugated pipe, the inlet of the collection box is connected to the collection pipe, and the collection pipe is connected to the main body of the enclosed box.

[0012] Furthermore, the enclosed box includes a main box, a left box, a right box, a sleeve box, a telescopic cylinder, a lid, and a drive device. The main box is set within the limiting frame of the vehicle frame, and its left and right ends are connected to the left and right boxes respectively. The left and right boxes are mounted on the vehicle frame. The main box is open at both the top and bottom. The sleeve box is slidably fitted onto the lower part of the main box, and a telescopic cylinder connects the sleeve box to the main box. The lid is slidably installed on the upper part of the main box. The lid is moved left and right by the drive device installed in the left and right boxes. A humidity sensor, an infrared temperature sensor, and a camera are installed in the main box. The main box is connected to a heat source and a water source.

[0013] Furthermore, the driving device includes a drive motor, two racks, and four drive gears; a through slot is opened on the cover, and the diameter of the slot is large enough for the friction disc of the rotating friction shaft to pass through; a rack is provided at each of the front and rear ends of the bottom of the cover, and the two racks are arranged in the left and right directions; a drive shaft is rotatably installed in both the left and right boxes; a drive gear is fitted on both the front and rear ends of each drive shaft; the four drive gears are respectively meshed with the corresponding racks; one of the drive shafts is fixedly connected to the output shaft of the drive motor; and the drive motor is mounted on the frame.

[0014] Furthermore, a rubber layer is installed on the bottom surface of the sleeve housing.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This invention has a wide range of applications. It can be used to measure the anti-stripping performance of rut plate specimens in the laboratory, or to transport the instrument to a designated area by towing on the road. It can also be connected to a vehicle through a square-mouth connection device to perform multi-point measurements as the vehicle moves.

[0017] 2. The present invention can successively apply controllable horizontal knob peeling action and upward suction peeling action to the road surface, and can apply peeling action to the road surface more comprehensively.

[0018] 3. This invention employs a negative pressure stripping method using air as the fluid medium, which captures the essence that air and liquid are both fluids, simplifies the operation previously performed using water as the fluid medium, and provides the conditions for the excellent convenience of this measuring instrument.

[0019] 4. This invention can control the rotation speed, direction, and load of the knob on the road surface, which can more realistically simulate the peeling conditions in reality and meet more diverse testing needs.

[0020] 5. This invention can control the temperature and humidity of the environment to remain consistent before each test, eliminate the influence of irrelevant factors, and can also investigate the effect of temperature and humidity on the peeling process.

[0021] 6. This invention can take photos before and after the test, which can clearly and intuitively show the changes in the road surface before and after, and also facilitate subsequent image analysis and anti-stripping evaluation.

[0022] 7. This invention can wirelessly transmit data to computer devices, is easy to operate, and produces clear, intuitive, and obvious results;

[0023] 8. Compared to the Kentucky scattering device, this invention can be tested on-site, making it more practical and convenient, and the experimental results are more meaningful.

[0024] 9. Compared to the Kentucky scattering instrument, this invention can avoid performance distortion caused by sampling disturbance, thereby unifying laboratory testing and actual engineering testing. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0027] Figure 3 This is a schematic diagram of the rotary device of the present invention;

[0028] Figure 4 This is a schematic diagram of the load control device of the present invention;

[0029] Figure 5 This is a schematic diagram of the negative pressure shedding material collection device and the sealed box of the present invention;

[0030] Figure 6 This is a schematic diagram of the enclosed box of the present invention;

[0031] The components include: 1. Square-mouth vehicle-mounted connection structure; 2. Vehicle frame; 201. Limiting frame; 3. Negative pressure type shed material collection device; 301. Air pump; 302. Corrugated pipe; 303. Collection pipe; 304. Collection box; 4. Enclosed box; 401. Left box body; 402. Humidity sensor; 403. Infrared temperature sensor; 404. Camera; 405. Box cover; 4051. Groove; 406. Main box body; 407. Drive motor; 408. Rack; 409. Drive gear; 410. Telescopic cylinder; 411. Right box body; 412. Sleeve box body; 413. Rubber layer; 5. Rotary device; 501. Rotary motor; 502. Motor steering speed control device; 503. Gearbox; 50 31. Housing; 5032. Output gear; 5033. Surface bearing; 504. Rotary friction shaft; 5041. Friction disc; 5042. Horizontal knob; 5043. Spline structure; 6. Lifting device; 601. Cylinder; 602. Cylinder controller; 603. Lifting frame; 7. Load control device; 701. Load motor; 702. Transmission device; 7021. Drive gear; 7022. Driven gear; 7023. Chain; 7024. Lead screw assembly; 7025. Upper platform; 7026. Lower platform; 703. Support frame; 704. Spring assembly; 8. Signal transmission device; 801. Signal receiver; 802. Signal transmission line; 9. Water tank; 10. Nozzle. Detailed Implementation

[0032] To better understand the purpose, structure, and function of this invention, the invention will be described in further detail below with reference to the accompanying drawings.

[0033] This invention is a pavement anti-stripping performance measuring instrument that can be used indoors or carried in a vehicle and can provide a combination of horizontal knob, "stripping action", and vertical suction action.

[0034] like Figure 1 , Figure 2 As shown, this invention provides a multi-functional composite anti-stripping performance measuring instrument applicable to multiple scenarios, including a frame 2, a rotary device 5, a load control device 7, a lifting device 6, a negative pressure stripping material collection device 3, and a sealed box 4; the sealed box 4 is installed at the bottom of the frame 2 to provide a closed environment and simulated environment in contact with the road surface to be tested; the rotary device 5 is located at the upper end of the sealed box 4 to apply frictional force to the road surface to be tested; the load control device 7 is installed on the frame 2 through the lifting device 6 and acts on the rotary device 5 to apply a load to the rotary device 5; the negative pressure stripping material collection device 3 is installed on the frame 2 to collect stripping material and apply negative pressure to the road surface to be tested.

[0035] like Figure 3As shown, the rotary device 5 includes a rotary motor 501, a motor steering speed control device 502, a gearbox 503, and a rotary friction shaft 504. A friction disc 5041 is provided at the bottom of the rotary friction shaft 504, and a horizontal knob 5042 is installed on the outer edge of the friction disc 5041 to apply friction to the road surface being tested. The rotary friction shaft 504 is vertically installed inside the frame 2 and connected to the load control device 7. A limiting frame 201 is provided at the corresponding position of the friction disc 5041 to facilitate the friction disc 5041 to descend and contact the road surface being tested. The rotary friction shaft 504 is connected to the output end of the gearbox 503, the input end of the gearbox 503 is connected to the rotary motor 501, and the rotary motor 501 is signal-connected to the motor steering speed control device 502.

[0036] The working process of the rotary device 5 is as follows: the rotary motor 501 applies sufficient torque and controllable rotation direction and speed to the rotary friction shaft 504 through the gearbox 503, and then applies a controllable rotational action to the road surface being tested through the rotary friction shaft 504.

[0037] The rotary device 5 is connected to the load control device 7 and is driven to rise and fall by the lifting device 6.

[0038] The motor steering speed control device 502 includes: 1. an H-bridge, composed of transistors or MOSFETs, used to control the direction of the motor; 2. an encoder, used to adjust the motor speed by adjusting the duty cycle of the complementary PWM signal at the control terminal; and 3. a signal receiver, used to receive signals and thus control parameters.

[0039] Speed ​​and Steering Control Principle:

[0040] The motor is a DC brushed motor. It uses an H-bridge composed of transistors or MOSFETs. The motor direction is controlled by switching the H-bridge's switching elements on and off. The motor speed is adjusted by regulating the duty cycle of the complementary PWM signal at the control terminal. An encoder (photoelectric or Hall effect sensor) needs to be installed on the motor output shaft. The MCU detects the real-time speed; when the speed is lower than the set value, the duty cycle of the complementary PWM signal increases; when the speed is higher than the set value, the duty cycle of the complementary PWM signal decreases.

[0041] like Figure 3 As shown, the gearbox 503 includes a housing 5031 and a gear set disposed within the housing 5031. The output gear 5032 in the gear set is rotatably connected to the housing 5031 via a plane bearing 5033. The center hole of the output gear 5032 is a spline hole. The middle part of the rotating friction shaft 504 adopts a spline structure 5043. The upper and lower gaps of the spline structure 5043 pass through the housing 5031 and are connected to the spline hole of the output gear 5032 for transmission.

[0042] The gearbox 503 includes: 1. a gear set, used to transmit the torque output by the torsion motor 501 to the rotating friction shaft 504, and proportionally increase the torque and decrease the speed; 2. a housing, used to protect personnel from accidents caused by contact with the rotating friction shaft 504, and also to limit the lower limit position of the rotating friction shaft 504 and fix its horizontal position.

[0043] like Figure 4 As shown, the load control device 7 includes a load motor 701, a support frame 703, a transmission device 702, and a spring assembly 704. The support frame 703 is mounted on the vehicle frame 2 via a lifting device 6. The transmission device 702 is mounted on the support frame 703 and positioned at the upper end of the rotating friction shaft 504. The spring assembly 704 connects the transmission device 702 and the rotating friction shaft 504. The transmission device 702 applies a vertically controllable elastic force to the rotating friction shaft 504 through the spring assembly 704, thereby controlling the vertical load on the road surface being tested. The transmission device 702 is powered by the load motor 701.

[0044] The lower end of the support frame 703 slides into the limiting frame 201.

[0045] like Figure 4 As shown, the transmission device 702 includes an upper platform 7025, a lower platform 7026, a drive gear 7021, a chain 7023, four lead screw assemblies 7024, and four driven gears 7022. The four lead screw assemblies 7024 are vertically and evenly distributed on the outside of the rotating friction shaft 504. The lower ends of the four lead screw assemblies 7024 are mounted on the lifting frame 603 of the lifting device 6. The sliders of the four lead screw assemblies 7024 are connected to an upper platform 7025. The upper platform 7025 and the lower platform 7026... A spring assembly 704 is connected between them. The lower platform 7026 has a central hole, and a rotating friction shaft 504 is connected through a roller bearing installed in the central hole. The upper ends of the four lead screw assemblies 7024 are rotatably connected through bearings and pass through the support frame 703. Each of them is coaxially connected to a driven gear 7022. The four driven gears 7022 are connected by a chain 7023. A drive gear 7021 is installed on the output shaft of the load motor 701. The drive gear 7021 is connected by a chain 7023.

[0046] Through the cooperation of gears and chains 7023, the load motor 701 can drive four lead screws to rotate simultaneously, thereby causing the sliders on the lead screws to move up and down. The up and down movement of the sliders can cause the upper platform 7025 to move up and down, thereby changing the height of the upper platform 7025 and the road surface being measured. Through the spring group 704, spring force is applied to the lower platform 7026 and the rotating friction shaft 504, thereby indirectly applying a vertical load to the road surface being measured.

[0047] Load control principle:

[0048] The spring constant of spring assembly 704 is known, and the deformation can be precisely controlled through the combination of the lead screw and slider, thereby controlling the load. At this point, the load on the pavement is part of the instrument's self-weight plus the applied elastic force. The control of the lead screw is achieved by the load motor 701, the H-bridge, and the gear chain 7023.

[0049] like Figure 1 As shown, the lifting device 6 includes a lifting frame 603, limit blocks, a cylinder 601, and a cylinder controller 602. The cylinder 601 is vertically fixed on the frame 2, and the telescopic end of the cylinder 601 is located at the top and fixedly connected to the lifting frame 603. The lifting frame 603 is slidably connected to the frame 2. A support frame 703 of the load control device 7 is installed on the lifting frame 603. Multiple limit blocks are respectively located at the upper part of the running trajectory of the lifting frame 603. The limit blocks are fixed on the frame 2 and used to limit the lifting frame 603. The cylinder 601 is signal-connected to the cylinder controller 602.

[0050] The sliding connection between the lifting frame 603 and the vehicle frame 2 can be as follows: slots can be provided on the contact surfaces of the lifting frame 603 and the vehicle frame 2, and the lifting frame 603 can be slidably inserted into the vertical beam of the vehicle frame 2 through the slots.

[0051] The lifting device 6 is used to raise and retract the rotating friction shaft 504 during movement, and to lower the rotating friction shaft 504 after reaching the designated area, thereby protecting the equipment and facilitating the replacement of the road surface area being inspected.

[0052] The cylinder 601 lifts and lowers, which in turn drives the load control device 7 to lift and lower as a whole.

[0053] like Figure 5 As shown, the negative pressure shedding material collection device 3 includes an air pump 301, a corrugated pipe 302, a collection pipe 303, and a collection box 304. The air pump 301 and the collection box 304 are connected through the corrugated pipe 302. The inlet of the collection box 304 is connected to the collection pipe 303, and the collection pipe 303 is connected to the main body 406 of the enclosed box 4.

[0054] The collection box 304 is used to collect the contents of the container. The collection box 304 is in the form of a box with a replaceable inner box. The inner box chamber is connected to the collection tube 303. A balance is installed at the bottom of the collection box 304 to measure the mass of the contents.

[0055] The negative pressure sludge collection device 3 is used to absorb and weigh the sludge through negative pressure after the sludge removal process, which facilitates further improvement of anti-sludge performance.

[0056] At the same time, the air pump 301 can apply negative pressure suction to the road surface using air as the fluid to create a peeling effect on the asphalt concrete in the vertical upward direction.

[0057] Air pump 301 is controlled by a solenoid valve.

[0058] The reference model for air pump 301 is LP-2400V, an oil-free piston vacuum pump.

[0059] The working principle of the negative pressure function of the 301 air pump:

[0060] Air pump 301 is controlled by a solenoid valve and relay to apply the desired negative pressure. Simultaneously, the sealed box 4 ensures that the applied negative pressure remains relatively consistent each time. At larger pumping volumes, the impact of sealing defects caused by the road surface orifices is limited. (However, the negative pressure generated by actual suction is still affected by the orifices.)

[0061] like Figure 5 , Figure 6 As shown, the enclosed box 4 includes a main box body 406, a left box body 401, a right box body 411, a sleeve box body 412, a telescopic cylinder 410, a box cover 405, and a drive device. The main box body 406 is set inside the limiting frame 201 of the frame 2. The left and right ends of the main box body 406 are connected to the left box body 401 and the right box body 411, respectively. The left box body 401 and the right box body 411 are mounted on the frame 2. The upper and lower ends of the main box body 406 are open. The sleeve box body 412 is slidably fitted onto the lower part of the main box body 406. A telescopic cylinder 410 is connected to the main housing 406, forming a telescopic structure between the main housing 406 and the sleeve housing 412. The telescopic cylinder 410 drives the sleeve housing 412 to extend downward. A cover 405 is slidably installed on the upper end of the main housing 406. The cover 405 is moved left and right by a driving device installed in the left housing 401 and the right housing 411. A humidity sensor 402, an infrared temperature sensor 403, and a camera 404 are installed inside the main housing 406. The main housing 406 is connected to a heat source and a water source.

[0062] The water source can be a water tank 9 filled with water, which is placed on the frame 2. The outlet of the water tank 9 is connected to a water pump, and the outlet of the water pump is connected to a nozzle 10 through a water pipe. The nozzle 10 is set on the main body 406, and the water pump is controlled to start and stop by a solenoid valve.

[0063] The heat source can be an existing component such as an electric heating wire, which is installed on the main housing 406 and connected to the battery.

[0064] The battery is installed on the frame 2. Electrical components such as solenoid valves, water pumps, drive motors 407, load motors 701, and torsion motors 501 can be connected to a power source or powered by the battery.

[0065] The telescopic cylinder 410 can be replaced with cylinder 601.

[0066] Humidity sensor 402 is used to measure the humidity in an enclosed environment;

[0067] Infrared temperature sensor 403 is used for remote measurement of temperature in enclosed environments.

[0068] like Figure 5 , Figure 6 As shown, the driving device includes a drive motor 407, two racks 408, and four drive gears 409. A through slot 4051 is opened on the cover 405, and the diameter of the slot 4051 is large enough for the friction disc 5041 of the rotating friction shaft 504 to pass through. A rack 408 is provided at each of the front and rear ends of the bottom of the cover 405. The two racks 408 are arranged in the left and right directions. A drive shaft is rotatably installed in both the left box 401 and the right box 411. A drive gear 409 is fitted on both the front and rear ends of each drive shaft. The four drive gears 409 are respectively meshed with the corresponding racks 408. One of the drive shafts is fixedly connected to the output shaft of the drive motor 407. The drive motor 407 is mounted on the frame 2.

[0069] A rubber layer 413 is installed on the bottom surface of the sleeve box 412.

[0070] The enclosed chamber 4 is used to control irrelevant variables in each anti-stripping test, while providing certain enclosed conditions to reduce the fluctuation of each negative pressure application. In addition, photos of the road surface are taken before and after each measurement to facilitate a more comprehensive evaluation of the anti-stripping performance.

[0071] Measurement principle:

[0072] The simulation of realistic and comprehensive peeling action under different scenarios includes (peeling action from the horizontal knob 5042 on the friction disc 5041 and upward suction peeling action; the horizontal knob 5042 peeling action simulates tire friction, and the upward suction peeling action simulates the suction effect generated by the tire passing over the surface air), with the quality of the peeled material as the main evaluation index. Simultaneously, the peeled material is stored in the collection box 304, allowing for more detailed evaluation after measurement.

[0073] The multi-scenario applicable accessories of the present invention include: 1. A fixedly connected trailer device, which is mechanically connected to each part of the measuring instrument to introduce vertical force into the ground, while restricting the movement direction of the instrument through directional tires; 2. A square-mouth vehicle-mounted connection structure 1, which is used to install and fix the measuring instrument to the vehicle through the square mouth of the trailer, so as to facilitate long-distance movement with the vehicle and to perform multi-point measurements.

[0074] The frame 2 is equipped with directional wheels. The frame 2 is used to support the instrument and restrict the instrument's forward direction. It is fixed to the vehicle through the trailer square opening.

[0075] Air pump 301, drive motor 407, load motor 701, and rotary motor 501 all communicate with each other via signal transmission device 8.

[0076] The signal transmission device 8 includes a signal transceiver 801 and a signal transmission line 802, used for receiving and transmitting wireless signals.

[0077] The first step is to place the measuring instrument in the required position, that is, to select the road surface to be tested within the limit frame 201 of the vehicle frame 2;

[0078] The second step is to turn on the device and check if it is working properly. If there are no abnormalities, proceed to the next step.

[0079] The third step is to lower and seal the sealed box 4. The cylinder 601 draws in air, and the sleeve box 412 on the edge of the main box 406 of the sealed box 4 is driven by the telescopic cylinder 410 and pushed to the road surface.

[0080] The fourth step is to start adjusting the test environment. The heat source and water source are started and detected and fed back by the temperature sensor and humidity sensor 402 until the temperature and humidity reach the set values.

[0081] Step 5: Take a photo using camera 404 in the multi-functional enclosed box 4.

[0082] In the sixth step, the rotating friction shaft 504 descends, the box cover 405 of the enclosed box 4 is driven by the drive motor 407, the gear rack 408 transmits the sliding motion, then the lifting device 6 is activated, the cylinder 601 exhausts air, and the load control device 7 and the rotating friction shaft 504 descend to the lower limit point.

[0083] Step 7: Set the rotation speed, direction, load size, and specified running time at the specified speed;

[0084] Step 8: Start the test. Activate the knob device and rotate the friction shaft 504 in the specified manner.

[0085] Step 9: Set the load to a negative value until the rotating friction shaft 504 is pulled up to the specified height;

[0086] Step 10: The main body 406 of the sealed box 4 slides and closes with the lid 405. The rotating friction shaft 504, which stops working, is supported by the lid 405. Then, the detachment collection device is activated, generating negative pressure and simultaneously sucking the detachment into the collection box 304. The balance measures the mass.

[0087] Step 10: Put away the instrument, raise the lifting device 6 to the upper limit, and restore the load control device 7 to the initial height.

[0088] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A multi-functional composite anti-stripping performance measuring instrument applicable to multiple scenarios, characterized in that: The device includes a frame (2), a rotary device (5), a load control device (7), a lifting device (6), a negative pressure debris collection device (3), and a sealed box (4). The sealed box (4) is installed at the bottom of the frame (2) to provide a closed environment and simulated environment in contact with the road surface to be tested. The rotary device (5) is set at the top of the sealed box (4) to apply friction to the road surface to be tested. The load control device (7) is installed on the frame (2) through the lifting device (6) and acts on the rotary device (5) to apply a load to the rotary device (5). The negative pressure debris collection device (3) is installed on the frame (2) to collect debris and apply negative pressure to the road surface to be tested.

2. The multi-scenario applicable multi-functional composite anti-stripping performance measuring instrument according to claim 1, characterized in that: The rotary device (5) includes a rotary motor (501), a motor steering speed control device (502), a gearbox (503), and a rotary friction shaft (504). The bottom of the rotary friction shaft (504) is provided with a friction disc (5041), and a horizontal knob (5042) is installed on the outer edge of the friction disc (5041) to apply friction to the road surface being tested. The rotary friction shaft (504) is vertically installed in the frame (2) and connected to the load control device (7). The frame (2) has a limit frame (201) at the corresponding position of the friction disc (5041). The rotary friction shaft (504) is connected to the output end of the gearbox (503), the input end of the gearbox (503) is connected to the rotary motor (501), and the rotary motor (501) is signal connected to the motor steering speed control device (502).

3. The multi-scenario applicable multi-functional composite anti-stripping performance measuring instrument according to claim 2, characterized in that: The gearbox (503) includes a housing (5031) and a gear set disposed in the housing (5031). The output gear (5032) in the gear set is rotatably connected to the housing (5031) through a plane bearing (5033). The center hole of the output gear (5032) is a spline hole. The middle part of the rotating friction shaft (504) is a spline structure (5043). The upper and lower clearances of the spline structure (5043) pass through the housing (5031) and are connected to the spline hole of the output gear (5032) for transmission.

4. The multi-scenario applicable multi-functional composite anti-stripping performance measuring instrument according to claim 2, characterized in that: The load control device (7) includes a load motor (701), a support frame (703), a transmission device (702), and a spring assembly (704). The support frame (703) is mounted on the vehicle frame (2) via a lifting device (6). The transmission device (702) is mounted on the support frame (703) and placed on the upper end of the rotating friction shaft (504). A spring assembly (704) is connected between the transmission device (702) and the rotating friction shaft (504). The transmission device (702) applies a vertical elastic force to the rotating friction shaft (504) via the spring assembly (704). The transmission device (702) is powered by the load motor (701).

5. The multi-scenario applicable multi-functional composite anti-stripping performance measuring instrument according to claim 4, characterized in that: The transmission device (702) includes an upper platform (7025), a lower platform (7026), a drive gear (7021), a chain (7023), four lead screw assemblies (7024), and four driven gears (7022). The four lead screw assemblies (7024) are vertically and evenly distributed on the outside of the rotating friction shaft (504). The lower ends of the four lead screw assemblies (7024) are mounted on the lifting device (6). The sliders of the four lead screw assemblies (7024) are connected to an upper platform (7025). The upper platform (7025) and the lower platform (7026) are connected together. A spring assembly (704) is connected between them. The lower platform (7026) has a central hole, and a rotating friction shaft (504) is connected through a roller bearing set in the central hole. The upper ends of the four lead screw assemblies (7024) are rotatably connected and pass through the support frame (703), and each is coaxially connected to a driven gear (7022). The four driven gears (7022) are connected by a chain (7023). A drive gear (7021) is installed on the output shaft of the load motor (701), and the drive gear (7021) is connected by a chain (7023).

6. The multi-scenario applicable multi-functional composite anti-stripping performance measuring instrument according to claim 5, characterized in that: The lifting device (6) includes a lifting frame (603), a limiting block, a cylinder (601), and a cylinder controller (602). The cylinder (601) is vertically fixed on the frame (2). The telescopic end of the cylinder (601) is located above and fixedly connected to the lifting frame (603). The lifting frame (603) is slidably connected to the frame (2). A support frame (703) of a load control device (7) is installed on the lifting frame (603). Multiple limiting blocks are respectively located on the upper part of the running trajectory of the lifting frame (603). The limiting frame is fixed on the frame (2) and is used to limit the lifting frame (603). The cylinder (601) is signal connected to the cylinder controller (602).

7. The multi-scenario applicable multi-functional composite anti-stripping performance measuring instrument according to claim 1, characterized in that: The negative pressure shedding material collection device (3) includes an air pump (301), a corrugated pipe (302), a collection pipe (303), and a collection box (304). The air pump (301) and the collection box (304) are connected through the corrugated pipe (302). The inlet of the collection box (304) is connected to the collection pipe (303), and the collection pipe (303) is connected to the main body (406) of the closed box (4).

8. The multi-scenario applicable multi-functional composite anti-stripping performance measuring instrument according to claim 1, characterized in that: The enclosed box (4) includes a main box body (406), a left box body (401), a right box body (411), a sleeve box body (412), a telescopic cylinder (410), a box cover (405), and a driving device; the main box body (406) is set inside the limiting frame (201) of the frame (2), and the left and right ends of the main box body (406) are connected to the left box body (401) and the right box body (411) respectively. The left box body (401) and the right box body (411) are mounted on the frame (2). The main box body (406) is open at both the top and bottom. 06) A sleeve box (412) is slidably fitted at the lower part, and a telescopic cylinder (410) is connected between the sleeve box (412) and the main box (406). A box cover (405) is slidably installed at the upper end of the main box (406). The box cover (405) is moved left and right by a drive device installed in the left box (401) and the right box (411). A humidity sensor (402), an infrared temperature sensor (403) and a camera (404) are installed in the main box (406). The main box (406) is connected to a heat source and a water source.

9. A multi-scenario applicable multi-functional composite anti-stripping performance measuring instrument according to claim 8, characterized in that: The drive device includes a drive motor (407), two racks (408), and four drive gears (409); a through slot (4051) is opened on the cover (405), and the diameter of the slot (4051) is large enough for the friction disc (5041) of the rotating friction shaft (504) to pass through. A rack (408) is provided at each of the front and rear ends of the bottom of the cover (405). The two racks (408) are arranged in the left and right directions. A drive shaft is rotatably installed in the left box (401) and the right box (411). A drive gear (409) is fitted on each of the front and rear ends of the drive shaft. The four drive gears (409) are respectively meshed with the corresponding racks (408). One of the drive shafts is fixedly connected to the output shaft of the drive motor (407). The drive motor (407) is mounted on the frame (2).

10. A multi-scenario applicable multi-functional composite anti-stripping performance measuring instrument according to claim 9, characterized in that: A rubber layer (413) is installed on the bottom surface of the sleeve box (412).

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