Road surface smoothness testing equipment

Abstract

This invention provides a road surface smoothness detection device, including a detection component and a calculation component mounted on a base plate, and a traveling component and a sweeping component mounted below the base plate. The detection component includes a housing mounted on the base plate, within which an elastic detection assembly is disposed. The elastic detection assembly includes a vertically arranged spring connected to a roller via a connecting rod. A displacement sensor is connected to the connecting rod. The roller passes through a perforation in the base plate and abuts against the road surface. The calculation component includes a controller mounted on the top of the housing to determine the road surface smoothness. The sweeping component includes a sweeping brush mounted below the front part of the base plate. This invention automatically detects road surface smoothness by measuring the longitudinal displacement of the spring-connected roller on the road surface and can clean the road surface in advance, improving detection accuracy and efficiency.

Description

Technical Field

[0001] This invention relates to the field of road surface testing technology, and more specifically, to a road surface smoothness testing device. Background Technology

[0002] Road surface smoothness refers to the deviation of the longitudinal unevenness of the road surface. It is an important indicator in road evaluation and construction acceptance, primarily reflecting the smoothness of the road's longitudinal profile curve. A relatively smooth longitudinal profile curve indicates a relatively smooth road surface, or relatively good smoothness; conversely, a rough surface indicates relatively poor smoothness. The smoothness of bridge and highway surfaces affects driving safety, comfort, the magnitude of impact forces on the road surface, and its service life. Uneven road surfaces increase driving resistance and cause additional vibrations to vehicles. Current methods for measuring road surface smoothness generally involve manual measurement with a ruler, requiring prior removal of gravel, sand, and other debris from the road surface, which is time-consuming, labor-intensive, and inefficient. Summary of the Invention

[0003] In view of the above problems, the purpose of this invention is to provide a road surface smoothness detection device that automatically detects road surface smoothness by measuring the longitudinal displacement value of a spring-connected roller on the road surface, and can clean the road surface in advance, thereby improving detection accuracy and efficiency.

[0004] This invention provides a road surface smoothness testing device, comprising a testing component and a calculation component mounted on a base plate, and a traveling component and a cleaning component mounted below the base plate, wherein... The detection component includes a box set on the base plate, and an elastic detection component is set in the box. The elastic detection component includes a vertically set spring, which is connected to a roller through a connecting rod. A displacement sensor is connected to the connecting rod. The roller passes through a hole in the base plate and abuts against the road surface. The displacement sensor detects the vertical displacement of the roller in real time as it moves along the road surface. The computing component includes a controller mounted on the top of the housing, which stores the real-time data detected by the displacement sensor and calculates the smoothness of the road surface. The walking component includes wheels located at the four lower corners of the base plate; The cleaning component includes a cleaning brush disposed below the front part of the base plate.

[0005] The detection component further includes a vertically moving assembly disposed on the upper part of the elastic detection component. The vertically moving assembly includes a support plate disposed on the upper part of the housing. A rotary motor is disposed on the upper part of the support plate. The shaft of the rotary motor passes through the support plate and is connected to a vertical lead screw. A moving block is screwed onto the lead screw. A guide groove of the same length as the lead screw is disposed on the side wall of the housing. A guide block is disposed on the side wall of the moving block facing the guide groove, and the guide block moves vertically within the guide groove. A limiting plate is provided at the lower end of the guide groove, and a connecting rod is provided at the lower end of the lead screw. The upper end of the connecting rod rotates in the limiting plate, and the lower end of the connecting rod is rotatably connected to the base plate.

[0006] The elastic detection assembly further includes a mounting plate connected to the side wall of the moving block away from the guide block, and the upper end of the spring is connected to the lower part of the mounting plate. When the moving block is at the top of the lead screw, the roller is located inside the housing. The moving block moves downward, and the roller extends through the perforation to the bottom plate and abuts against the road surface, while the spring is compressed.

[0007] A sleeve of the same length as the spring is fitted over the spring. The upper end of the sleeve is connected to the lower part of the mounting plate, and the connecting rod passes through the center of the bottom of the sleeve. A vertical groove is provided on the inner side of the housing, and a sliding plate is provided between the spring and the connecting rod, the sliding plate sliding in the groove.

[0008] The displacement sensor is fixed below the mounting plate, and a contact plate is connected to the end of the contact rod of the displacement sensor. A horizontal bar is provided in the middle of the connecting rod, and a vertical bar is connected to the end of the horizontal bar. The upper end of the vertical bar is connected to the contact plate. A horizontal plate is connected to the bottom of the housing. The vertical bar passes through the horizontal plate. When the spring is in a free state, the contact plate contacts the horizontal plate.

[0009] A gear is connected to the lower end of the connecting rod, a rack meshes with the gear, a baffle is connected to one end of the rack, a through hole is provided on the side of the housing, the rack passes through the through hole, and the baffle covers the upper part of the through hole by the movement of the rack. A slider is provided on the upper part of the baffle, a notch is provided in the middle of the slider, and a sliding rod adapted to the notch is provided on the bottom of the box, and the notch slides along the sliding rod.

[0010] The cleaning component also includes a support frame disposed at the upper front end of the base plate, and a flat plate parallel to the base plate is disposed on the upper part of the support frame. The cleaning brush includes two brush rods that pass through the base plate and the flat plate in sequence. A sweeping round brush is connected to the lower end of the brush rod, and a driven bevel gear is connected to the upper end of the brush rod. A transmission bevel gear meshes with the driven bevel gear. A transmission rod passes through both of the two transmission bevel gears. An upper gear is connected to both ends of the transmission rod. A lower gear is connected to the axle of the front wheel of the base plate. The upper gear and the lower gear are on the same vertical plane and are connected by a toothed chain. Two support plates are provided on the flat plate, and the two ends of the transmission rod are respectively rotatably connected to the support plates.

[0011] The computing component also includes a protective box installed on the top of the housing. Inside the protective box are a display screen and the controller. The controller is connected to the display screen and the displacement sensor respectively. A mobile power supply is installed on the base plate. The mobile power supply powers the controller, the display screen and the displacement sensor. The display screen shows the real-time data detected by the displacement sensor stored in the controller.

[0012] The protective box includes a box body open on one side, a door frame provided on the open side of the protective box, and a door panel that can be rotated upward and opened on the door frame. Hand-operated grooves and main magnets are provided on both sides of the door panel, first negative magnets are provided on both sides of the door frame, and a second negative magnet is provided on the top of the protective box.

[0013] A push handle is provided on the edge of the base plate away from the cleaning component, and a door is provided on the box body.

[0014] The road surface smoothness testing device according to the present invention features a spring-connected roller. During the testing process, the spring is compressed, and the roller remains in contact with the road surface due to the spring force. A displacement sensor measures the longitudinal displacement of the roller as it travels on the road surface, thus detecting the road surface smoothness. A cleaning component cleans the road surface in front of the roller, removing obstacles for the testing work and improving the accuracy of the test. This invention improves the efficiency of road surface smoothness testing and reduces labor costs.

[0015] To achieve the foregoing and related objectives, one or more aspects of the invention include the features that will be described in detail below and particularly pointed out in the claims. The following description and accompanying drawings illustrate certain exemplary aspects of the invention. However, these aspects indicate only a few of the various ways in which the principles of the invention can be used. Furthermore, the invention is intended to include all such aspects and their equivalents. Attached Figure Description

[0016] Other objects and results of the invention will become more apparent and readily understood by referring to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention. In the drawings: Figure 1 This is a schematic diagram of the appearance of a road surface smoothness testing device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the box according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the cleaning component according to an embodiment of the present invention; Figure 4 for Figure 2 An enlarged schematic diagram of part A; Figure 5 for Figure 2 An enlarged schematic diagram of part B; Figure 6 for Figure 2 An enlarged schematic diagram of part C; Figure 7 for Figure 2 An enlarged schematic diagram of part D; Figure 8 for Figure 2 An enlarged schematic diagram of part E; Figure 9 for Figure 2 An enlarged schematic diagram of part F; Wherein, 1-base plate; 2-Detection component, 21-Box, 22-Elastic detection component, 221-Spring, 222-Connecting rod, 223-Roller, 224-Displacement sensor, 2241-Touch plate, 2242-Vertical rod, 2243-Horizontal plate, 225-Mounting plate, 226-Shell, 227-Slide groove, 228-Slide plate, 23-Up and down moving component, 231-Support plate, 232-Rotating motor, 233-Screw rod, 234-Moving block, 235-Guide groove, 236-Guide block, 237-Limiting plate, 238-Connecting rod, 24-Gear, 25-Rack, 26-Baffle, 27-Through hole, 28-Slider, 29-Slide rod; 3-Calculation component, 31-Mobile power supply, 32-Protective box, 321-Door frame, 322-Door panel, 323-Hand groove, 324-Main magnet, 325-First negative magnet, 326-Second negative magnet; 4-Walking components, 41-Wheels, 42-Push handle; 5-Sweeping component, 51-Sweeping brush, 511-Brush rod, 512-Round sweeping brush, 52-Support frame, 521-Flat plate, 53-Support plate, 54-Driven bevel gear, 55-Transmission bevel gear, 56-Transmission rod, 57-Upper gear, 58-Lower gear, 59-Gear chain; 6-Perforation; In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed Implementation

[0017] In the following description, numerous specific details are set forth for illustrative purposes and to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may also be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form for ease of description of one or more embodiments.

[0018] This invention can be modified and has various embodiments, with specific embodiments illustrated in the accompanying drawings. However, this invention is not limited to this particular implementation and all modifications, equivalents, and substitutions falling within the spirit and technical scope of this invention are to be understood as included.

[0019] Ordinal terms such as "first," "second," etc., may be used to describe various constituent elements, but the constituent elements are not limited to these terms. The terms are used only to distinguish one constituent element from another. For example, without departing from the scope of the claims of this invention, a second constituent element may be named a first constituent element, and similarly, a first constituent element may be named a second constituent element. Terms and / or include combinations of multiple associated items or one of multiple associated items.

[0020] It should be understood that when referring to a constituent element being "connected" or "in contact" with other constituent elements, this includes not only cases where it is directly connected or in contact with other constituent elements, but also cases where other constituent elements exist between them. Conversely, when referring to a constituent element being "directly connected" or "directly in contact" with other constituent elements, it should be understood that no other constituent elements exist between them.

[0021] In the description of the embodiments, when it is stated that a certain component is formed "on or under" other components, "on or under" includes both two components that are in direct contact with each other and at least one other component that is configured to be formed between the two components. Furthermore, when expressed as "on or under", based on a certain component, it refers not only to the upper direction but may also include the lower direction.

[0022] The terminology used in this application is for illustrative purposes only and is not intended to limit the invention. Unless the context clearly specifies otherwise, singular expressions include plural expressions. In this application, it should be understood that terms such as "comprising" or "having" are used to specify the presence of features, numbers, steps, operations, constituent elements, components, or combinations thereof described in the specification, and do not preclude the presence or additional possibilities of one or more other features, numbers, steps, operations, constituent elements, components, or combinations thereof.

[0023] Unless otherwise defined, including technical or scientific terms, all terms used herein have the same meaning as commonly understood by those skilled in the art. Terms as defined in commonly used dictionaries should be interpreted in a meaning consistent with their meaning in the context of the relevant art, and should not be construed as having an ideal or overly formal meaning unless explicitly defined in this application.

[0024] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0025] like Figures 1-9 As shown in the figure, the road surface smoothness testing equipment proposed in this embodiment can be used for the smoothness testing of the ground of bridge structures, as well as for the smoothness testing of other road surfaces.

[0026] This road surface evenness testing equipment includes a detection component 2 and a calculation component 3 mounted on a base plate 1, as well as a traveling component 4 and a cleaning component 5 mounted below the base plate 1. The traveling component 4 is used for the movement of the equipment, allowing it to travel along the road surface. The cleaning component 5 is positioned in front of the detection component 2 and is used to clean debris from the road surface, facilitating the detection work of the detection component 2. The detection component 2 is used to detect the longitudinal change value of the road surface in real time during the equipment's movement. The calculation component 3 is used to store the real-time detected longitudinal change value of the road surface to determine the road surface evenness.

[0027] like Figure 1 and Figure 2 As shown, specifically, the walking component 4 may include wheels located at the four corners below the base plate 1, allowing the entire device to move along the road surface via the wheels.

[0028] The cleaning component 5 may include a cleaning brush 51 disposed below the front part of the base plate 1. In this embodiment, with the forward direction of the device as the front, the cleaning brush 51 is located at the front of the base plate 1, and the detection component 2 is located behind the cleaning brush 51. The cleaning brush 51 contacts the road surface, which can clean the road surface to be detected in advance, remove stones and other debris, and facilitate the operation of the detection component 2.

[0029] The detection component 2 may include a box 21 set on the base plate 1. An elastic detection component 22 is set inside the box 21. The elastic detection component 22 includes a vertically set spring 221. The spring 221 is connected to a roller 223 through a connecting rod 222. A displacement sensor 224 is connected to the connecting rod 222. The roller 223 extends out through a through hole 6 on the base plate 1 and abuts against the road surface. The spring is compressed. The displacement sensor 224 detects the vertical displacement of the roller 223 in real time as it moves along the road surface.

[0030] In order to test the integrity of component 2, the components of component 2 are not affected by the external environment. A box 21 with an open bottom is provided in the middle of the base plate 1. The bottom of the box 21 is installed on the base plate 1. All components of component 2 are installed in the box 21. The box 21 may be provided with a door to facilitate the maintenance of component 2.

[0031] To enable real-time detection of road surface unevenness as the equipment moves along the road surface, an elastic detection component 22 is installed inside the housing 21. The elastic detection component 22 has vertical elasticity, allowing it to move up and down with the road surface unevenness, always maintaining tight contact with the road surface for accurate detection. The elastic detection component 22 may include a spring 221, a connecting rod 222, and a roller 223 connected in sequence. The spring 221, connecting rod 222, and roller 223 are on the same vertical line, with the direction of roller 223 being the same as that of wheel 41. A through hole 6 is provided on the base plate 1, which is adapted to fit the roller 223. The roller 223 and connecting rod 222 extend from the through hole 6 below the base plate 1. When the roller 223 contacts the road surface, the spring 221 is appropriately compressed. Regardless of changes in road surface unevenness during the movement of the roller 223, the roller 223 always maintains tight contact with the road surface, accurately sensing changes in the road surface. The spring 221 can be a compression spring.

[0032] In order to accurately and conveniently obtain the road surface change value, a displacement sensor 224 is connected to the connecting rod 222. The displacement sensor 224 obtains the up and down change of the roller 223 by sensing the up and down displacement of the connecting rod 222, so as to obtain the change of the road surface.

[0033] The calculation component 3 may include a controller installed on the top of the housing 21. In this embodiment, the controller may be a PLC controller. The controller is connected to the displacement sensor 224 and stores the data detected by the displacement sensor 224 in real time, which can be used to determine the smoothness of the road surface.

[0034] The displacement sensor 224 transmits the measured data to the controller, which records each data point. Through this data, the amount of unevenness in the road surface can be easily obtained, and the smoothness of the road surface can be determined.

[0035] like Figure 2 and Figure 4As shown, in a specific embodiment of the present invention, the detection component 2 further includes a vertical moving component 23 disposed on the upper part of the elastic detection component 22. The elastic detection component 22 is moved out below the bottom plate 1 by the vertical moving component 23. When the equipment is not in use, the elastic detection component 22 is moved into the housing 21 by the vertical moving component 23, which can better protect and store it.

[0036] The vertical movement assembly 23 may include a support plate 231 disposed in the upper part of the housing 21. A rotary motor 232 is disposed on the upper part of the support plate 231. The shaft of the rotary motor 232 passes through the support plate 231 and is connected to a vertical lead screw 233. A moving block 234 is screwed on the lead screw 233. A guide groove 235 of the same length as the lead screw 233 is disposed on the side wall of the housing 21. A guide block 236 is disposed on the side wall of the moving block 234 facing the guide groove 235, and the guide block 236 moves vertically in the guide groove 235. The elasticity detection assembly 22 is connected to the moving block 234.

[0037] The support plate 231 can be rectangular, connected to the rear wall of the housing 21, and can be located in the middle of the housing 21. The width of the support plate 231 is sufficient to support and place the rotating motor 232, and the distance from the support plate 231 to the top of the housing 21 is sufficient to accommodate the rotating motor 232. The rotating motor 232 can be set close to the front wall of the housing 21. The guide groove 235 on the front wall cooperates with the guide block 236 to limit the moving block 234, so that the moving block 234 moves vertically along the guide groove 235 without rotational displacement.

[0038] The rotating motor 232 drives the lead screw 233 to rotate, and the moving block 234 on the lead screw 233 moves vertically in a stable manner, thereby driving the elastic detection component 22 to move vertically.

[0039] To prevent the moving block 234 from moving below the lead screw 233 and disengaging from it, a limiting plate 237 is provided at the lower end of the guide groove 235. The limiting plate 237 is located at the lower end of the lead screw 233 and blocks the moving block 234 from moving further down.

[0040] To ensure the slender lead screw 233 remains stable and vertical, a connecting rod 238 is provided at the lower end of the lead screw 233, and the lower end of the connecting rod 238 is rotatably connected to the base plate 1. A limiting plate 237 can be provided at the connection between the connecting rod 238 and the lead screw 233, and the upper end of the connecting rod 238 rotates in the circular hole of the limiting plate 237.

[0041] like Figure 2 As shown, in a specific embodiment of the present invention, the elastic detection component 22 further includes a mounting plate 225 connected to the side wall of the moving block 234 away from the guide block 236, and the upper end of the spring 221 is connected to the lower part of the mounting plate 225. The moving block 234 drives the elastic detection component 22 to move vertically through the horizontal mounting plate 225.

[0042] When the moving block 234 is at the top of the lead screw 233, the roller 223 is inside the housing 21. The moving block 234 moves down, and the roller 223 extends through the through hole 6 to the bottom plate 1 and comes into contact with the road surface. It should not just make contact. At this time, the spring 221 should be compressed. The compression of the spring 221 should ensure that the spring 221 has enough space to fall and rise during the detection process, so that the roller 223 is always in close contact with the road surface. Only in this way can the displacement sensor 224 detect the actual unevenness of the road surface.

[0043] The length of the lead screw 233 should be greater than the distance between the roller 223 and the standard road surface to ensure the compression of the spring 221 and to ensure that the roller 223 is always in close contact with the road surface, thus meeting the testing requirements.

[0044] The stiffness specification of spring 221 can be selected according to specific circumstances.

[0045] like Figure 5 As shown, in a specific embodiment of the present invention, in order to prevent the spring 221 from tilting and deforming when the roller 223 moves during the measurement process, a sleeve 226 of the same length as the spring 221 in its free state is fitted around the spring 221. The upper end of the sleeve 226 is connected to the lower part of the mounting plate 225, and the connecting rod 222 passes through the center of the bottom of the sleeve 226. The cross-sectional area of ​​the sleeve 226 is slightly larger than that of the spring 221. The sleeve 226 can restrict the spring 221 to remain vertical and not tilt during the movement, thus ensuring the accuracy of the measurement.

[0046] To ensure the vertical stability of the spring 221 during compression, a vertical groove 227 is provided on the inner side of the housing 226. A sliding plate 228 is placed between the spring 221 and the connecting rod 222, sliding within the groove 227. During compression and rebound of the spring 221, the sliding plate 228 moves up and down within the groove 227, ensuring the absolute vertical compression of the spring 221. Because both ends of the sliding plate 228 abut against the groove 227, the horizontal position of the spring 221 is further restricted during the testing process.

[0047] In a specific embodiment of the present invention, in order to facilitate the measurement of the vertical displacement of the spring 221, the displacement sensor 224 is fixed below the mounting plate 225. A contact plate 2241 is connected to the end of the contact rod of the displacement sensor 224. A horizontal bar is provided in the middle of the connecting rod 222, and a vertical bar 2242 is connected to the end of the horizontal bar. The upper end of the vertical bar 2242 is connected to the contact plate 2241. A horizontal plate 2243 is connected to the bottom of the housing 226. The vertical bar 2242 passes through the middle hole of the horizontal plate 2243. When the spring 221 is in a free state, the contact plate 2241 contacts the horizontal plate 2243.

[0048] When spring 221 is in a free state, displacement sensor 224 does not activate. When detection begins and spring 221 is compressed, displacement sensor 224 activates. Using the value of displacement sensor 224 at this time as a reference, during the detection process, the contact plate 2241 of displacement sensor 224 moves synchronously with the extension and retraction of spring 221. The amount of extension and retraction of spring 221 can be measured in real time through displacement sensor 224, thereby detecting the vertical displacement of roller 223 in real time.

[0049] The horizontal plate 2243 limits the vertical rod 2242, and the vertical rod 2242 can move up and down in the central hole of the horizontal plate 2243, so that the vertical rod 2242 can move vertically and stably.

[0050] like Figure 2 and Figure 6 As shown, in a specific embodiment of the present invention, a switchable baffle 26 is provided on the base plate 1 to block the through hole 6. When the roller 223 enters the box 21, it keeps the inside of the box 21 clean and the components inside the box 21 are not affected by the outside world, making it easy to store.

[0051] A gear 24 is connected to the lower end of the connecting rod 238, and a rack 25 meshes with the gear 24. A baffle 26 is connected to one end of the rack 25. A through hole 27 is provided on the side of the housing 21. The rack 25 passes through the through hole 27 and can pass out of the housing 21 through the through hole 27. By moving the rack 25, the baffle 26 moves away from and covers the upper part of the through hole 6.

[0052] When the rotating motor 232 is turned on, the rotation of the connecting rod 238 drives the gear 24 to rotate. The gear 24 drives the rack 25 to move horizontally. The rack 25 drives the baffle 26 to leave the through hole 6. At the same time, the roller 223 descends and extends out of the through hole 6. When the test is completed, the rotating motor 232 rotates in the opposite direction. The reverse rotation of the connecting rod 238 drives the gear 24 to rotate in the opposite direction. The gear 24 drives the rack 25 to move horizontally in the opposite direction. The rack 25 drives the baffle 26 to cover the through hole 6.

[0053] The engagement of gear 24 and rack 25 is determined based on the rotation time of connecting rod 238, ensuring that baffle 26 can completely leave through hole 6 and also cover through hole 6.

[0054] To ensure stable movement of the baffle 26, the gear 24 and rack 25 are stably meshed. A slider 28 is provided on the upper part of the baffle 26, with a notch in the middle. A sliding rod 29, which matches the notch, is provided on the bottom of the housing 21, and the notch slides along the sliding rod 29. Through the cooperation of the slider 28 and the sliding rod 29, the rack 25 will not disengage from the gear 24, and the baffle 26 moves stably.

[0055] like Figure 3 and Figure 7As shown, in a specific embodiment of the present invention, the sweeping component 5 further includes a support frame 52 disposed on the upper front end of the base plate 1. A flat plate 521 parallel to the base plate 1 is disposed on the upper part of the support frame 52. The sweeping brush 51 includes two brush rods 511 that pass through the base plate 1 and the flat plate 521 in sequence. A sweeping circular brush 512 is connected to the lower end of the brush rods 511. The support frame 52 and the base plate 1 jointly support the brush rods 511, making the brush rods 511 vertical and stable. The sweeping circular brush 512 is installed below the brush rods 511, and the sweeping circular brush 512 contacts the road surface to sweep the road surface.

[0056] To clean the road surface more thoroughly, the sweeping brush 51 rotates. The sweeping brush 51 rotates in the following manner: a driven bevel gear 54 is connected to the upper end of the brush rod 511, a drive bevel gear 55 meshes with the driven bevel gear 54, a drive rod 56 passes through both drive bevel gears 55, upper gears 57 are connected to both ends of the drive rod 56, and a lower gear 58 is connected to the axle of the wheel 41 at the front of the base plate 1. The upper gears 57 and lower gears 58 are on the same vertical plane and are connected by a toothed chain 59.

[0057] The front wheel 41 rotates, the lower gear 58 rotates, and the upper gear 57 rotates through the toothed chain 59. The upper gear 57 drives the transmission rod 56 to rotate, and the transmission bevel gear 55 on the transmission rod 56 rotates. The transmission bevel gear 55 drives the driven bevel gear 54 to rotate, so that the brush rod 511 rotates in the hole of the flat plate 521 and the base plate 1, and the sweeping round brush 512 rotates to sweep the road surface.

[0058] To ensure stable rotation of the two sets of bevel gears, two support plates 53 are provided on the plate 521, and the two ends of the transmission rod 56 are rotatably connected to the support plates 53 respectively. The two support plates 53 respectively support the two ends of the transmission rod 56, making the rotation of the transmission rod 56 stable.

[0059] The front wheel 41 is mounted on the lower part of the base plate 1 via an inverted U-shaped frame. The top of the inverted U-shaped frame is fixed to the lower side of the base plate 1. An axle is passed through the middle of the inverted U-shaped frame. The wheel 41 is fixedly mounted on the axle. A lower gear 58 is fixedly mounted on the outer end of the axle. The lower gear 58 and the wheel 41 rotate synchronously.

[0060] The two wheels at the rear of the base plate 1 can be swivel casters.

[0061] In a specific embodiment of the present invention, the computing component 3 may further include a protective box 32 disposed on the top of the box 21. A display screen and a controller are disposed inside the protective box 32. The controller is connected to the display screen and the displacement sensor 224 respectively. A mobile power supply 31 is disposed on the base plate 1. The mobile power supply 31 supplies power to the controller, the display screen and the displacement sensor 224. The display screen shows the real-time data detected by the displacement sensor 224 stored in the controller.

[0062] The protective case 32 protects electronic components such as the display screen and controller. The door on the protective case 32 allows for easy viewing and maintenance of the display screen and controller. The controller receives and stores data detected in real time by the displacement sensor 224 and displays the data on the display. The controller can also generate curves from the real-time data detected by the displacement sensor 224 and display them on the display for easy observation and understanding of the smoothness of the road surface longitudinal profile curve. The display screen is touch-sensitive. The portable power supply 31 provides power to the electronic components during equipment movement and also powers the rotating motor 232.

[0063] like Figure 8 and Figure 9 As shown, in a specific embodiment of the present invention, in order to facilitate opening the door on the protective box 32, the protective box 32 includes a box body with one side open. A door frame 321 is provided on the open side of the protective box 32. A door panel 322 that can be rotated upwards and opened is provided on the door frame 321. A pull groove 323 and a main magnet 324 are provided on both sides of the door panel 322. A first negative magnet 325 is provided on both sides of the door frame 321. A second negative magnet 326 is provided on the top of the protective box 32.

[0064] During use, the door panel 322 can be rotated by pulling the handle 323 to open one side of the protective box 32. Then, the road detection data can be viewed on the display screen. With the cooperation of the main magnet 324 and the second negative magnet 326, the door panel 322 can be firmly attached to the bottom of the protective box 32. The door panel 322 will not close during the detection process.

[0065] The door panel 322 can be securely closed by the cooperation of the main magnet 324 and the first negative magnet 325.

[0066] The top of the protective box 32 can be set to tilt forward and downward. After the door panel 322 is opened, the door panel 322 tilts downward and will not easily flip and close.

[0067] In one specific embodiment of the present invention, a push handle 42 is provided on the edge of the base plate 1 away from the cleaning member 5, which facilitates pushing the entire device forward in a straight line.

[0068] The road surface smoothness testing device according to the present invention has been described above by way of example with reference to the accompanying drawings. However, those skilled in the art will understand that various modifications can be made to the road surface smoothness testing device proposed in the present invention without departing from the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the contents of the appended claims.

Claims

1. A road surface smoothness testing device, characterized in that, It includes detection and calculation components mounted on the base plate, and walking and cleaning components mounted below the base plate, wherein... The detection component includes a housing mounted on the base plate. An elastic detection assembly is housed within the housing. The elastic detection assembly includes a vertically arranged spring, a connecting rod, a roller, and a mounting plate connected to the spring. The spring is connected to the roller via the connecting rod. A displacement sensor is connected to the connecting rod. A sleeve of the same length as the spring is fitted over the spring. The displacement sensor is fixed below the mounting plate, and a contact plate is connected to the end of the sensor's contact rod. A horizontal bar is provided in the middle of the connecting rod, and a vertical bar is connected to the end of the horizontal bar. The upper end of the vertical bar is connected to the contact plate. The sleeve... A horizontal plate is connected to the bottom of the device, and the vertical rod passes through the horizontal plate. When the spring is in a free state, the contact plate contacts the horizontal plate. The spring, the connecting rod, and the roller are on the same vertical line. A through hole is provided on the bottom plate, which is adapted to the roller. The roller and the connecting rod extend from the through hole below the bottom plate, and the roller contacts the road surface. The displacement sensor detects the vertical displacement of the roller as it moves along the road surface in real time. The calculation component includes a controller located on the top of the housing. The controller stores the data detected in real time by the displacement sensor to determine the flatness of the road surface. The walking component includes wheels located at the four lower corners of the base plate; The cleaning component includes a cleaning brush disposed below the front part of the base plate; the detection component further includes a vertically moving assembly disposed above the elastic detection component, the vertically moving assembly including a support plate disposed in the upper part of the housing, a rotary motor disposed on the upper part of the support plate, the rotating shaft of the rotary motor passing through the support plate and connected to a vertical lead screw, a moving block being screwed on the lead screw, a guide groove of the same length as the lead screw being disposed on the side wall of the housing, and a guide block being disposed on the side wall of the moving block facing the guide groove, the guide block moving vertically in the guide groove. A limiting plate is provided at the lower end of the guide groove, and a connecting rod is provided at the lower end of the lead screw. The upper end of the connecting rod rotates within the limiting plate, and the lower end of the connecting rod is rotatably connected to the base plate. The mounting plate is connected to the side wall of the moving block away from the guide block, and the upper end of the spring is connected to the lower part of the mounting plate. When the moving block is at the top of the lead screw, the roller is located inside the housing. The moving block moves downward, and the roller extends through the perforation to below the base plate and contacts the road surface, compressing the spring. The upper end of the housing is connected to the lower part of the mounting plate, and the connecting rod passes through the center of the bottom of the housing. A vertical groove is provided on the inner side of the housing, and a sliding plate is provided between the spring and the connecting rod. The sliding plate slides in the groove. A gear is connected to the lower end of the connecting rod, and a rack meshes with the gear. A baffle is connected to one end of the rack. A through hole is provided on the side of the housing, and the rack passes through the through hole. By moving the rack, the baffle covers the upper part of the through hole. A slider is provided on the upper part of the baffle, a notch is provided in the middle of the slider, and a sliding rod adapted to the notch is provided on the bottom of the box, and the notch slides along the sliding rod.

2. The road surface smoothness testing equipment as described in claim 1, characterized in that, The cleaning component also includes a support frame disposed at the upper front end of the base plate, and a flat plate parallel to the base plate is disposed on the upper part of the support frame. The cleaning brush includes two brush rods that pass through the base plate and the flat plate in sequence. A sweeping round brush is connected to the lower end of the brush rod, and a driven bevel gear is connected to the upper end of the brush rod. A transmission bevel gear meshes with the driven bevel gear. A transmission rod passes through both of the two transmission bevel gears. An upper gear is connected to both ends of the transmission rod. A lower gear is connected to the axle of the front wheel of the base plate. The upper gear and the lower gear are on the same vertical plane and are connected by a toothed chain. Two support plates are provided on the flat plate, and the two ends of the transmission rod are respectively rotatably connected to the support plates.

3. The road surface smoothness testing equipment as described in claim 1, characterized in that, The computing component also includes a protective box installed on the top of the housing. Inside the protective box are a display screen and a controller. The controller is connected to the display screen and the displacement sensor respectively. A mobile power supply is installed on the base plate. The mobile power supply powers the controller, the display screen and the displacement sensor. The display screen displays the real-time data detected by the displacement sensor stored in the controller.

4. The road surface smoothness testing equipment as described in claim 3, characterized in that, The protective box includes a box body open on one side, a door frame provided on the open side of the protective box, and a door panel that can be rotated upward and opened on the door frame. Hand-operated grooves and main magnets are provided on both sides of the door panel, first negative magnets are provided on both sides of the door frame, and a second negative magnet is provided on the top of the protective box.

5. The road surface smoothness testing equipment as described in claim 1, characterized in that, A push handle is provided on the edge of the base plate away from the cleaning component, and a door is provided on the box body.

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