Pavement flatness detection device

Abstract

The utility model relates to the technical field of road gradient measurement, and discloses a road surface flatness detection device which comprises a shell and a mounting frame, a telescopic rod is fixedly connected to the bottom of the inner wall of the shell, a mounting plate is rotatably connected to the bottom end of the telescopic rod, and a laser range finder is slidably connected to the inner wall of the mounting frame. And a quick mounting mechanism is arranged at the top of the mounting frame, the quick mounting mechanism is used for quickly connecting the mounting frame and the mounting plate, rotating rods are fixedly connected to the front side and the rear side of the outer wall of the mounting plate, and the two rotating rods are slidably connected with the shell. According to the utility model, the angle of the laser range finder can be flexibly adjusted through the rotating connection of the telescopic rod and the mounting plate, the measurement requirements of different road conditions are met, the detection accuracy is improved, and the stability and reliability of the device are enhanced through the sliding connection of the rotating rod and the shell and the clamping and locking mechanism of the gear and the inner gear ring; and the convenience of angle adjustment further improves the working efficiency.

Description

Technical Field

[0001] This utility model relates to the field of road slope measurement technology, and in particular to a road surface smoothness detection device. Background Technology

[0002] Road smoothness refers to the unevenness of the road surface. During road construction, many factors can cause unevenness in the road surface. Uneven road surfaces will cause vehicles to bump when driving on the road, affecting driving speed, driving stability, comfort, and driving safety. Therefore, after the road construction is completed, a smoothness test is required. If the road smoothness exceeds the tolerance, further repairs are needed.

[0003] A search revealed Chinese Patent Publication No. CN219793565U, which discloses a detection device for road surface smoothness testing. The device includes a trolley with a crossbeam. Two movable wheels are mounted on both ends of the crossbeam, and a counter is mounted on any one of the wheels. An infrared height gauge is also mounted on the crossbeam and electrically connected to the counter. The movement of the trolley drives the infrared height gauge, thereby detecting the road surface height. This invention utilizes an infrared height gauge mounted on the crossbeam of the trolley. The movement of the trolley drives the infrared height gauge, and the measurement frequency of the infrared height gauge is set according to the distance the trolley travels, thus enabling the detection of road surface height and smoothness. However, in practical use, different types of roads, such as highways, urban roads, and rural roads, have different road surface conditions and measurement requirements. Existing detection devices cannot adjust their angles to accommodate these differences, limiting the accuracy and comprehensiveness of the detection. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a road surface smoothness detection device, which aims to improve the existing technology for different types of roads, such as highways, urban roads and rural roads, whose road surface conditions and measurement requirements are different. However, the existing detection devices cannot make corresponding angle adjustments to accommodate these differences, which limits the accuracy and comprehensiveness of the detection.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a road surface smoothness detection device, comprising a housing and a mounting frame. A telescopic rod is fixedly connected to the bottom of the inner wall of the housing, and a mounting plate is rotatably connected to the bottom end of the telescopic rod. A laser rangefinder is slidably connected to the inner wall of the mounting frame. A quick-connect mechanism is provided at the top of the mounting frame for quickly connecting the mounting frame and the mounting plate. Rotating rods are fixedly connected to both the front and rear sides of the outer wall of the mounting plate. Both rotating rods are slidably connected to the housing, and the front end of the front rotating rod penetrates the housing and... The outer wall of the housing is fixedly connected to a gear. Two sliding grooves are formed on the front side of the outer wall of the housing. Two sliding rods are slidably connected to the inner walls of the two sliding grooves. A limit plate is fixedly connected to the front end of the sliding rods. A plurality of springs are fixedly connected to the rear side of the outer wall of the limit plate. An internal gear ring is fixedly connected to the rear end of the plurality of springs. The internal gear ring engages with the gear. An insertion rod is fixedly connected to the front side of the outer wall of the internal gear ring. The front end of the insertion rod passes through the limit plate. A processor is fixedly connected to the bottom front side of the inner wall of the housing. A data transmitter is fixedly connected to the rear bottom side of the inner wall of the housing.

[0006] Through the above technical solution: In this road surface smoothness detection device, the telescopic rod inside the outer shell has a telescopic function, and the mounting plate rotatably connected to its bottom end can flexibly adjust the angle. The laser rangefinder configured inside the mounting frame is used to accurately measure road surface smoothness data. With the help of the quick-release mechanism, the mounting frame and the mounting plate can be quickly connected. The rotating rods on the front and rear sides of the mounting plate are slidably connected to the outer shell, which makes the mounting plate more stable when moving and rotating. The gear at the front end of the front rotating rod engages with the internal gear ring, which plays the role of fixing the angle of the mounting plate. When it is necessary to adjust the angle of the laser rangefinder, the insert rod is pulled forward, which drives the internal gear ring to move forward and causes the internal gear ring to separate from the gear. At this time, the mounting plate and the rotating rod can be rotated. After adjusting to a suitable angle, the insert rod is released. Under the action of the second spring, the internal gear ring resets and re-engages with the gear, thereby fixing the angle. The data measured by the laser rangefinder will be transmitted to the processor for processing, and then the processed results will be transmitted out through the data transmitter.

[0007] As a further description of the above technical solution:

[0008] The quick-installation mechanism includes two insert plates, which are fixedly connected to the front and rear sides of the top of the mounting frame, respectively. Slots are provided on the front and rear sides of the bottom of each mounting plate, and the two insert plates are slidably connected to their corresponding slots. Reserved grooves are provided on the front and rear sides of the inner wall of each mounting plate, and locking blocks are slidably connected to the inner walls of each reserved groove. A spring is fixedly connected to the far ends of each of the two locking blocks, and the far ends of each of the two springs are fixedly connected to their corresponding reserved grooves. A lever is fixedly connected to the top of each of the two reserved grooves. Reserved holes are provided on the outer walls of each of the two insert plates, and the two locking blocks engage with their corresponding reserved holes.

[0009] The above technical solution allows for the following: When connecting the mounting frame and the mounting plate, the two insert plates at the top of the mounting frame are inserted into the corresponding slots on the front and back sides of the bottom of the mounting plate. During insertion, the insert plates exert a squeezing force on the locking blocks, causing them to move towards the pre-reserved slots and compress the first spring. When the pre-reserved hole on the insert plate moves to the position aligned with the locking block, the locking block will embed into the pre-reserved hole under the elastic force of the first spring, achieving a quick connection and stable fixation between the mounting frame and the mounting plate. When disassembly is required, the locking block is moved out of the pre-reserved hole by moving the lever at the top of the pre-reserved slot, releasing the locking state. Then, the insert plates can be pulled out of the slots, thus completing the disassembly operation.

[0010] As a further description of the above technical solution:

[0011] An information sign is provided on the front side of the outer wall of the laser rangefinder. Screws are threadedly connected to the outer wall of the information sign around its perimeter. The information sign is threadedly connected to the laser rangefinder via the screws.

[0012] The above technical solution allows the information board to display relevant information about the laser rangefinder. The information board is connected to the laser rangefinder by screws around its perimeter, ensuring that the information board is securely installed and not easily detached or loosened.

[0013] As a further description of the above technical solution:

[0014] The top front and rear sides of the outer shell are fixedly connected to indicator rods, and the upper and lower sides of the outer walls of the two indicator rods are fixedly connected to multiple reflective strips.

[0015] Through the above technical solution: the indicator pole serves as a warning and marking tool, and the multiple reflective strips reflect light under illumination, further enhancing the warning effect. Especially at night or in dimly lit environments, it can effectively alert surrounding personnel and ensure the safe conduct of testing work.

[0016] As a further description of the above technical solution:

[0017] A mounting rod is fixedly connected to the top right side of the housing, and an indicator light is fixedly connected to the top of the mounting rod.

[0018] The above technical solution uses a mounting rod to support and fix the indicator light, which in turn indicates the working status of the device, allowing operators to understand the equipment status in a timely manner.

[0019] As a further description of the above technical solution:

[0020] A handle is fixedly connected to the front end of the outer wall of the insertion rod, and the surface of the handle is treated with anti-slip treatment.

[0021] The above technical solution makes it easier for operators to pull the plug rod. The handle surface is treated with anti-slip material to increase friction, making it less likely for operators to slip when pulling the handle, and making the operation easier and more accurate.

[0022] As a further description of the above technical solution:

[0023] Mounting brackets are fixedly connected to the front and rear sides of the left end of the outer wall of the housing, and multiple screws are threaded to the left side of the outer wall of the two mounting brackets.

[0024] The above technical solution involves using a mounting bracket to connect and secure other external devices or components. Multiple screws on the mounting bracket serve to tighten the connection, ensuring its stability.

[0025] As a further description of the above technical solution:

[0026] Multiple guide rods are fixedly connected to the front side of the outer wall of the internal toothed ring, and multiple data transmitters are slidably connected to the limiting plate.

[0027] Through the above technical solution, multiple guide rods play a guiding role during its movement, ensuring that the internal gear ring can move smoothly along a straight line and accurately engage or disengage with the gear, thereby improving the stability and accuracy of the device's angle adjustment operation.

[0028] As a further description of the above technical solution:

[0029] This utility model has the following beneficial effects:

[0030] 1. In this utility model, the angle of the laser rangefinder can be flexibly adjusted by the rotating connection between the telescopic rod and the mounting plate to adapt to different road conditions and improve detection accuracy. The quick-installation mechanism makes the mounting frame and the mounting plate connected quickly and firmly, which is convenient for operation and maintenance. The sliding connection between the rotating rod and the outer shell and the locking mechanism between the gear and the internal gear ring enhance the stability and reliability of the device. The convenience of angle adjustment further improves work efficiency.

[0031] 2. In this utility model, the automatic engagement of the locking block and the reserved hole ensures the stability of the connection, effectively preventing loosening or falling off during use and ensuring the accuracy of the test. Disassembly can be easily completed by turning the lever, which facilitates the maintenance, replacement and cleaning of the parts. This quick and reliable connection and disassembly method reduces the difficulty of operation and labor costs, enhances the practicality and convenience of the road surface smoothness detection device, and makes it easier to use flexibly in different scenarios. Attached Figure Description

[0032] Figure 1 This is a perspective view of a road surface smoothness detection device proposed in this utility model;

[0033] Figure 2 This is a partial structural schematic diagram of a road surface smoothness detection device proposed in this utility model;

[0034] Figure 3 This is a partial structural exploded view of a road surface smoothness detection device proposed in this utility model;

[0035] Figure 4 This is a schematic diagram of the quick-assembly mechanism of a road surface smoothness detection device proposed in this utility model;

[0036] Figure 5 This is a schematic diagram of the mounting frame for a road surface smoothness testing device proposed in this utility model;

[0037] Figure 6 This is a cross-sectional view of the mounting plate of a road surface smoothness detection device proposed in this utility model.

[0038] Legend:

[0039] 1. Outer shell; 2. Quick-release mechanism; 201. Insert plate; 202. Slot; 203. Reserved slot; 204. Locking block; 205. Spring 1; 206. Lever; 207. Reserved hole; 3. Mounting frame; 4. Telescopic rod; 5. Mounting plate; 6. Laser rangefinder; 7. Rotating rod; 8. Gear; 9. Sliding groove; 10. Sliding rod; 11. Limiting plate; 12. Spring 2; 13. Internal gear ring; 14. Insert rod; 15. Processor; 16. Data transmitter; 17. Information board; 18. Screwdriver; 19. Indicator rod; 20. Reflective strip; 21. Mounting rod; 22. Indicator light; 23. Handle; 24. Mounting bracket; 25. Screw 2; 26. Guide rod. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] Reference Figure 1 , Figure 2 and Figure 3 This utility model provides an embodiment of a road surface smoothness detection device, comprising a housing 1 and a mounting frame 3. The housing 1 protects the internal components and provides a mounting base. A telescopic rod 4 is fixedly connected to the bottom of the inner wall of the housing 1 for adjusting the height of a mounting plate 5. The bottom end of the telescopic rod 4 is rotatably connected to the mounting plate 5 for mounting and fixing a laser rangefinder 6. The laser rangefinder 6 is slidably connected to the inner wall of the mounting frame 3 for measuring road surface smoothness data. A quick-connect mechanism 2 is provided at the top of the mounting frame 3 for quickly connecting the mounting frame 3 and the mounting plate 5. Rotating rods 7 are fixedly connected to both the front and rear sides of the outer wall of the mounting plate 5. The rotating rods 7 are used to support and drive the mounting plate 5 to rotate. Both rotating rods 7 are slidably connected to the outer shell 1. The front end of the front rotating rod 7 passes through the outer shell 1 and is fixedly connected to a gear 8, which cooperates with the internal gear ring 13 to fix the angle of the mounting plate 5. Two sliding grooves 9 are opened on the front side of the outer wall of the outer shell 1. Two sliding rods 10 are slidably connected to the inner walls of the two sliding grooves 9 to support and restrict the movement of the limiting plate 11. The front ends of the multiple sliding rods 10 are fixedly connected to the limiting plate 11, fixing the spring 12 and the internal gear ring 13. Multiple springs 12 are fixedly connected to the rear side of the outer wall of the limiting plate 11. The springs 12 are used to reset the internal gear ring 13. The rear ends of the multiple springs 12 are fixedly connected to the internal gear ring 13. The internal gear ring 13 is used to engage with the gear 8 to fix the angle of the mounting plate 5. A rod 14 is fixedly connected to the front side of the outer wall of the internal gear ring 13. The rod 14 is used to control the engagement and disengagement of the internal gear ring 13 and the gear 8. The front end of the rod 14 penetrates the limiting plate 11. A processor 15 is fixedly connected to the bottom front side of the inner wall of the outer shell 1 to process the data measured by the laser rangefinder 6. The bottom of the inner wall of the outer shell 1... A data transmitter 16 is fixedly connected to the rear side, and the data transmitter 16 is used to transmit processed data; an information board 17 is set on the front side of the outer wall of the laser rangefinder 6 to display relevant information of the laser rangefinder 6. Screws 18 are threadedly connected to the outer wall of the information board 17, and the information board 17 is threadedly connected to the laser rangefinder 6 through the screws 18; indicator rods 19 are fixedly connected to the front and rear sides of the top of the outer shell 1 for warning and identification purposes. Multiple reflective strips 20 are fixedly connected to the upper and lower sides of the outer walls of the two indicator rods 19 to enhance the warning effect;

[0042] Specifically, in this road surface smoothness testing device, the telescopic rod 4 inside the outer shell 1 can extend and retract, and the mounting plate 5 rotatably connected to its bottom end can adjust the angle. The laser rangefinder 6 inside the mounting frame 3 is used to measure road surface smoothness data. The mounting frame 3 and the mounting plate 5 can be quickly connected through the quick-release mechanism 2. The rotating rods 7 on the front and rear sides of the mounting plate 5 are slidably connected to the outer shell 1, making the movement and rotation of the mounting plate 5 more stable. The gear 8 at the front end of the front rotating rod 7 engages with the internal gear ring 13, which serves to fix the angle of the mounting plate 5. When it is necessary to adjust the angle of the laser rangefinder 6, the insert rod 14 is pulled forward, which drives the internal gear ring 13 to move forward, causing the internal gear ring 13 to separate from the gear 8. At this time, the mounting plate 5 and the rotating rod 7 can be rotated to adjust the angle. After adjusting to the appropriate angle, release the insertion rod 14. Under the action of spring 12, the internal gear ring 13 resets and re-engages with gear 8, fixing the angle. The data measured by the laser rangefinder 6 is transmitted to the processor 15 for processing, and then transmitted out through the data transmitter 16. The information plate 17 is used to display relevant information of the laser rangefinder 6. The information plate 17 is threadedly connected to the laser rangefinder 6 through the screws 18 around it, ensuring that the information plate 17 is firmly installed and not easy to fall off or loosen. The indicator rod 19 serves as a warning and identification function. Multiple reflective strips 20 reflect light under illumination, further enhancing the warning effect, especially at night or in low-light environments, effectively reminding surrounding personnel to pay attention and ensuring the safe conduct of the inspection work.

[0043] Reference Figure 1 , Figure 4 and Figure 6 The quick-installation mechanism 2 includes two insert plates 201, which are fixedly connected to the front and rear sides of the top of the mounting frame 3, respectively. The insert plates 201 are used to cooperate with the slots 202 to connect the mounting frame 3 and the mounting plate 5. The two insert plates 201 are slidably connected to the corresponding slots 202, which are used to accommodate the insert plates 201. The inner wall of the mounting plate 5 has reserved grooves 203 on both the front and rear sides for installing the locking blocks 204 and springs 205. The inner walls of the two reserved grooves 203 are slidably connected with the locking blocks 204, which are used to engage with the reserved holes 207 to achieve connection. The two locking blocks 204 are fixedly connected to springs 205 at their far ends. Springs 205 provide the elastic force for the locking blocks 204 to reset. The far ends of the two springs 205 are fixedly connected to the corresponding reserved slots 203. The tops of the two reserved slots 203 are fixedly connected to levers 206, which are used to control the movement of the locking blocks 204. The outer walls of the two insert plates 201 are provided with reserved holes 207, which are used to cooperate with the locking blocks 204 to achieve locking and fixing. The two locking blocks 204 are respectively locked with the corresponding reserved holes 207.

[0044] Specifically, when it is necessary to connect the mounting frame 3 to the mounting plate 5, the two insert plates 201 at the top of the mounting frame 3 are inserted into the corresponding slots 202 on the front and back sides of the bottom of the mounting plate 5, respectively. During the insertion process, the insert plates 201 will squeeze the locking block 204, causing the locking block 204 to move into the reserved slot 203 and compress the spring 205. When the reserved hole 207 on the insert plate 201 moves to the position aligned with the locking block 204, the locking block 204 will be locked into the reserved hole 207 under the elastic force of the spring 205, realizing the quick connection and fixation of the mounting frame 3 and the mounting plate 5. When it is necessary to disassemble, by moving the lever 206 at the top of the reserved slot 203, the locking block 204 is moved out of the reserved hole 207, releasing the locking state, and the insert plate 201 can be pulled out from the slot 202 to complete the disassembly.

[0045] Reference Figure 1 , Figure 2 and Figure 5 A mounting rod 21 is fixedly connected to the top right side of the outer casing 1. The mounting rod 21 is used to support and fix the indicator light 22. The top of the mounting rod 21 is fixedly connected to the indicator light 22, which is used to indicate the working status of the device. A handle 23 is fixedly connected to the front end of the outer wall of the insertion rod 14. The handle 23 is used to facilitate the operation of the insertion rod 14. The surface of the handle 23 is treated with anti-slip treatment to increase the friction during operation and prevent slipping.

[0046] Specifically, the mounting rod 21 on the top right side of the outer casing 1 is used to support and fix the indicator light 22. The indicator light 22 is used to indicate the working status of the device, so that the operator can understand the equipment status in a timely manner. The handle 23 makes it easy for the operator to pull the plug rod 14. The surface of the handle 23 is treated with anti-slip treatment to increase friction, so that the operator is less likely to slip when pulling the handle 23, making the operation easier and more accurate.

[0047] Reference Figure 1 , Figure 2 and Figure 3 Mounting brackets 24 are fixedly connected to the front and rear sides of the left end of the outer wall of the outer shell 1. The mounting brackets 24 are used to connect external equipment or components. Multiple screws 25 are threaded to the left side of the outer wall of the two mounting brackets 24. The screws 25 are used to fasten the connection. Multiple guide rods 26 are fixedly connected to the front side of the outer wall of the inner toothed ring 13. The guide rods 26 are used to ensure the stability and accuracy of the movement of the inner toothed ring 13. Multiple data transmitters 16 are slidably connected to the limiting plate 11.

[0048] Specifically, the mounting brackets 24 on the front and rear sides of the left end of the outer wall of the outer casing 1 are used to connect and fix other external equipment or components. The multiple screws 25 on the mounting brackets 24 serve to fasten the connection and ensure the stability of the connection. The multiple guide rods 26 on the front side of the outer wall of the inner gear ring 13 serve to guide it during its movement, ensuring that the inner gear ring 13 can move smoothly along a straight line and accurately engage or disengage with the gear 8, thereby improving the stability and accuracy of the device angle adjustment operation.

[0049] Working principle: During device operation, the telescopic rod 4 inside the outer casing 1 can extend and retract as needed. Since the bottom end of the telescopic rod 4 is rotatably connected to the mounting plate 5, the mounting plate 5 can change its tilt angle, thus providing a basis for adjusting the measurement angle of the laser rangefinder 6. The laser rangefinder 6 in the mounting frame 3 is responsible for collecting data on road surface flatness. Through the quick-release mechanism 2, the mounting frame 3 can be quickly and securely connected to the mounting plate 5. The rotating rods 7 on the front and rear sides of the mounting plate 5 are slidably connected to the outer casing 1. This structure enhances the stability of the mounting plate 5 during movement and rotation, reducing swaying and deviation. The gear 8 at the front end of the front rotating rod 7 engages with the internal gear ring 13, forming a locking mechanism that fixes the angle of the mounting plate 5. When adjusting the laser rangefinder... When the laser rangefinder 6 is at the desired angle, the operator pulls the insert rod 14 forward. The insert rod 14 moves the internal gear ring 13 forward, thereby disengaging the internal gear ring 13 from the gear 8. At this time, the mounting plate 5 and the rotating rod 7 are in a state of free rotation, allowing the operator to rotate the mounting plate 5 to the appropriate angle. After adjustment, the insert rod 14 is released. Under the elastic restoring force of the spring 12, the internal gear ring 13 returns to its original position and re-engages with the gear 8, fixing the angle of the mounting plate 5. During the measurement process, the road surface smoothness data acquired by the laser rangefinder 6 is transmitted to the processor 15 at the bottom front side of the inner wall of the outer casing 1 for processing and analysis. The processed results are then transmitted out by the data transmitter 16 at the bottom rear side of the inner wall of the outer casing 1 for subsequent use and storage.

[0050] Furthermore, when it is necessary to connect the mounting frame 3 to the mounting plate 5, the two insert plates 201 at the top of the mounting frame 3 are inserted into the corresponding slots 202 on the front and rear sides of the bottom of the mounting plate 5, respectively. During the insertion process, the insert plates 201 will squeeze the locking block 204, causing the locking block 204 to move into the reserved slot 203 and compress the spring 205. When the reserved hole 207 on the insert plate 201 moves to the position aligned with the locking block 204, the locking block 204 will be locked into the reserved hole 207 under the elastic force of the spring 205, realizing the quick connection and fixation of the mounting frame 3 and the mounting plate 5. When it is necessary to disassemble, by moving the lever 206 at the top of the reserved slot 203, the locking block 204 is moved out of the reserved hole 207, releasing the locking state, and the insert plate 201 can be pulled out from the slot 202 to complete the disassembly.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A road surface smoothness testing device, comprising a housing (1) and a mounting frame (3), characterized in that: A telescopic rod (4) is fixedly connected to the bottom of the inner wall of the outer shell (1). A mounting plate (5) is rotatably connected to the bottom end of the telescopic rod (4). A laser rangefinder (6) is slidably connected to the inner wall of the mounting frame (3). A quick-release mechanism (2) is provided on the top of the mounting frame (3). The quick-release mechanism (2) is used to quickly connect the mounting frame (3) and the mounting plate (5). Rotating rods (7) are fixedly connected to the front and rear sides of the outer wall of the mounting plate (5). Both rotating rods (7) are slidably connected to the outer shell (1). The front end of the rotating rod (7) on the front side passes through the outer shell (1) and is fixedly connected to a gear (8). Two sliding grooves (9) are opened on the front side of the outer wall of the outer shell (1). Each of the sliding grooves (9) has two sliding rods (10) slidably connected to its inner wall. The front ends of the sliding rods (10) are fixedly connected to a limiting plate (11). The rear side of the outer wall of the limiting plate (11) is fixedly connected to a plurality of springs (12). The rear ends of the springs (12) are fixedly connected to an internal gear ring (13). The internal gear ring (13) engages with the gear (8). The front side of the outer wall of the internal gear ring (13) is fixedly connected to a plug rod (14). The front end of the plug rod (14) passes through the limiting plate (11). The bottom front side of the inner wall of the outer shell (1) is fixedly connected to a processor (15). The rear bottom side of the inner wall of the outer shell (1) is fixedly connected to a data transmitter (16).

2. The road surface smoothness detection device according to claim 1, characterized in that: The quick-installation mechanism (2) includes two insert plates (201), which are fixedly connected to the front and rear sides of the top of the mounting frame (3). The mounting plate (5) has slots (202) on both the front and rear sides of its bottom. The two insert plates (201) are slidably connected to the corresponding slots (202). The mounting plate (5) has reserved grooves (203) on both the front and rear sides of its inner wall. The inner walls of the two reserved grooves (203) are slidably connected to locking blocks (2). 04), spring 1 (205) is fixedly connected to the far ends of the two locking blocks (204), and the far ends of the two spring 1 (205) are fixedly connected to the corresponding reserved slots (203). A lever (206) is fixedly connected to the top of the two reserved slots (203). Reserved holes (207) are opened on the outer walls of the two insert plates (201), and the two locking blocks (204) are engaged with the corresponding reserved holes (207).

3. The road surface smoothness detection device according to claim 1, characterized in that: An information sign (17) is provided on the front side of the outer wall of the laser rangefinder (6). Screws (18) are threaded around the outer wall of the information sign (17). The information sign (17) is threaded to the laser rangefinder (6) through the screws (18).

4. The road surface smoothness detection device according to claim 1, characterized in that: The top front and rear sides of the outer shell (1) are fixedly connected with indicator rods (19), and the upper and lower sides of the outer walls of the two indicator rods (19) are fixedly connected with multiple reflective strips (20).

5. The road surface smoothness detection device according to claim 1, characterized in that: An installation rod (21) is fixedly connected to the top right side of the outer casing (1), and an indicator light (22) is fixedly connected to the top of the installation rod (21).

6. The road surface smoothness detection device according to claim 1, characterized in that: A handle (23) is fixedly connected to the front end of the outer wall of the insertion rod (14), and the surface of the handle (23) is treated with anti-slip treatment.

7. The road surface smoothness detection device according to claim 1, characterized in that: The outer wall of the outer shell (1) is fixedly connected to the front and rear sides of the left end of the outer wall, and the outer wall of the two mounting brackets (24) is threaded with multiple screws (25).

8. A road surface smoothness testing device according to claim 1, characterized in that: Multiple guide rods (26) are fixedly connected to the front side of the outer wall of the internal toothed ring (13), and multiple data transmitters (16) are slidably connected to the limiting plate (11).

Images