Road flatness detection device
By designing a road smoothness detection device that includes a fixed rod assembly, a laser smoothness detector, and a camera assembly, the problems of slow detection speed, low accuracy, and bulky equipment in the existing technology are solved, and efficient and accurate road smoothness detection is achieved.
Patent Information
- Application Number
- CN202520561622.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Existing road smoothness testing methods suffer from problems such as slow testing speed, low accuracy, bulky equipment, and difficulty in application on severely damaged road surfaces.
Design a detection device that includes a fixed pole assembly, a laser smoothness detector, and a camera assembly. The device performs detection by synchronously moving a vehicle and uses a laser ranging system and a camera system to collaboratively acquire road smoothness information.
It improves detection efficiency and accuracy, adapts to different road widths, can be easily installed and adjusted on vehicles, and is suitable for various road surface conditions.
Smart Images

Figure CN223936961U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of road inspection technology, specifically a road smoothness inspection device. Background Technology
[0002] Road smoothness refers to the deviation of the longitudinal unevenness of the road surface. It is a crucial indicator in road evaluation and construction acceptance, primarily reflecting the smoothness of the road's longitudinal profile curve. Poor smoothness increases driving costs and reduces vehicle lifespan due to bumps, impacting driving speed and safety, and failing to meet passenger comfort requirements. Furthermore, vibrations significantly increase the impact force on the road surface, exacerbating road damage. Therefore, road smoothness testing and evaluation is a very important task.
[0003] Commonly used testing methods include the ruler measurement method or the eight-wheel tester. The ruler measurement method has disadvantages such as slow testing speed, low detection accuracy, and large workload due to bending over. The eight-wheel tester has a large and cumbersome mechanical configuration, which is inconvenient to use and difficult to apply to severely damaged road surfaces. Utility Model Content
[0004] The purpose of this invention is to provide a road smoothness detection device to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a road smoothness detection device, comprising a fixed rod assembly, on which a laser smoothness detector and a camera assembly are mounted. The laser smoothness detector includes a first fixed sleeve, which is fixedly connected to the fixed rod assembly by a second tightening screw. The camera assembly includes a second fixed sleeve, which is fixedly connected to the fixed rod assembly by a third tightening screw. The fixed rod assembly includes a main rod, and auxiliary rods are provided at both ends of the main rod. The auxiliary rods are fixedly connected to the main rod by a first tightening screw.
[0006] The laser flatness tester includes a laser tester base and a mounting base, wherein the laser tester base is fixed to the mounting base by screws.
[0007] The first fixing sleeve is welded to the mounting base, and the first fixing sleeve is sleeved on the fixing rod assembly.
[0008] The camera assembly includes a camera base, which is welded and fixed to a second fixing sleeve, which is sleeved on the fixing rod assembly.
[0009] The first fixing sleeve has a first screw hole, and the second tightening screw is threadedly connected to the first screw hole.
[0010] The second fixing sleeve has a second screw hole, and the third tightening screw is threadedly connected to the second screw hole.
[0011] The main rod is configured as a hollow structure, and one end of the auxiliary rod is slidably embedded inside the main rod.
[0012] Mounting plates are welded and fixed to both sides of the main rod.
[0013] The mounting plate has a slot.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. The multi-group laser flatness detector of this utility model constitutes a laser detection system, and the multi-group camera components constitute a camera system. The overall detection device is directly connected to the vehicle. When the personnel drive the vehicle on the road, the detection device moves synchronously with the vehicle and completes the detection of road flatness during the driving process, which improves the detection efficiency and detection accuracy.
[0016] 2. This utility model can adjust the total length of the fixed pole assembly according to the road width, and install a corresponding number of laser flatness detectors and camera components on the fixed pole assembly to realize the flatness detection of different roads. Attached Figure Description
[0017] Figure 1 This is a top view structural diagram of the present invention;
[0018] Figure 2 This is a schematic diagram of the structure from a bottom view of the present invention;
[0019] Figure 3 This is a schematic diagram of the structure of the laser flatness testing instrument of this utility model;
[0020] Figure 4 This is a schematic diagram of the camera assembly of this utility model;
[0021] Figure 5 This is a schematic diagram of the structure of the fixing rod assembly of this utility model;
[0022] Figure 6 for Figure 5 A magnified view of a portion of area A in the middle.
[0023] In the diagram: 1. Fixed rod assembly; 2. Laser flatness detector; 3. Camera assembly; 11. Main rod; 12. Auxiliary rod; 13. First tightening screw; 14. Mounting plate; 15. Groove; 21. Laser detector base; 22. Mounting seat; 23. First fixing sleeve; 24. First screw hole; 25. Second tightening screw; 31. Camera base; 32. Second fixing sleeve; 33. Second screw hole; 34. Third tightening screw. Detailed Implementation
[0024] 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.
[0025] Please see Figure 1-6 This utility model provides a technical solution: a road smoothness detection device, including a fixed rod assembly 1, on which a laser smoothness detector 2 and a camera assembly 3 are installed. The laser smoothness detector 2 includes a first fixed sleeve 23, which is fixedly connected to the fixed rod assembly 1 by a second tightening screw 25. The camera assembly 3 includes a second fixed sleeve 32, which is fixedly connected to the fixed rod assembly 1 by a third tightening screw 34. The fixed rod assembly 1 includes a main rod 11, and auxiliary rods 12 are provided at both ends of the main rod 11. The auxiliary rods 12 are fixedly connected to the main rod 11 by a first tightening screw 13.
[0026] Based on actual usage requirements, a corresponding number of laser smoothness detectors 2 and camera components 3 are installed on the fixed pole assembly 1. Multiple sets of laser smoothness detectors 2 constitute a laser detection system, and multiple sets of camera components 3 constitute a camera system. The laser smoothness detectors 2 emit laser beams from the equipment through a laser ranging system, measure the reflection time and angle of the laser beam to the road surface, and obtain the elevation information of the road surface. At the same time, the camera components 3 can acquire image information of the road surface. The laser detection system and the camera system work together to obtain road smoothness information and improve detection accuracy.
[0027] When using the overall inspection device, the device is installed and fixed to the front or rear of the vehicle via the mounting plate 14 on the fixing rod assembly 1. It can be directly installed on the vehicle. When the vehicle is driven on the road, the inspection device moves synchronously with the vehicle and completes the inspection of the road flatness during the journey, thus improving the inspection efficiency.
[0028] The laser flatness tester 2 includes a laser tester base 21 and a mounting base 22. The laser tester base 21 is fixed to the mounting base 22 by screws. The laser tester base 21 and the mounting base 22 have a detachable structure, which makes it convenient to install and disassemble the laser tester base 21 and facilitates maintenance.
[0029] The first fixing sleeve 23 is welded and fixed to the mounting base 22. The first fixing sleeve 23 is sleeved on the fixing rod assembly 1. The installation position and installation angle of the laser flatness detector 2 on the fixing rod assembly 1 are adjustable.
[0030] The camera assembly 3 includes a camera base 31, which is welded and fixed to the second fixing sleeve 32. The second fixing sleeve 32 is sleeved on the fixing rod assembly 1. The installation position and installation angle of the camera assembly 3 on the fixing rod assembly 1 are adjustable.
[0031] The first fixing sleeve 23 has a first screw hole 24, and the second tightening screw 25 is threadedly connected to the first screw hole 24.
[0032] When the second tightening screw 25 is loosened, the first fixing sleeve 23 can slide along the axis of the fixing rod assembly 1. At this time, the position of the first fixing sleeve 23 can be adjusted, that is, the position of the laser flatness detector 2 can be adjusted. After the position adjustment is completed, the second tightening screw 25 is tightened again to secure it.
[0033] The second fixing sleeve 32 has a second screw hole 33, and the third tightening screw 34 is threadedly connected to the second screw hole 33.
[0034] When the third tightening screw 34 is loosened, the second fixing sleeve 32 can slide along the axis of the fixing rod assembly 1. At this time, the position of the second fixing sleeve 32 can be adjusted, that is, the position of the camera assembly 3 can be adjusted. After the position adjustment is completed, tighten the third tightening screw 34 to tighten again. The installation positions of the laser flatness detector 2 and the camera assembly 3 can be adjusted according to actual usage requirements.
[0035] The main rod 11 is designed as a hollow structure, and one end of the auxiliary rod 12 is slidably embedded inside the main rod 11.
[0036] Loosen the first tightening screw 13, and the auxiliary rod 12 can slide along the axis of the main rod 11. At this time, the extension length of the auxiliary rod 12 can be adjusted, that is, the total length of the fixed rod assembly 1 can be adjusted. After the adjustment is completed, tighten the first tightening screw 13 to tighten it again. The total length of the fixed rod assembly 1 can be adjusted according to the road width. A corresponding number of laser flatness detectors 2 and camera components 3 can be installed on the fixed rod assembly 1 to realize the flatness detection of different roads.
[0037] Mounting plates 14 are welded and fixed to both sides of the main rod 11.
[0038] The mounting plate 14 has a slot 15. The entire device is installed and fixed to the front or rear of the vehicle through the mounting plate 14 on the fixing rod assembly 1, and is directly connected to the vehicle. The connection method is simple and easy to install and remove.
[0039] Working principle: In use, the total length of the fixed pole assembly 1 is adjusted according to the road width, and a corresponding number of laser smoothness detectors 2 and camera components 3 are installed on the fixed pole assembly 1. The entire device is installed and fixed to the front or rear of the vehicle through the mounting plate 14 on the fixed pole assembly 1, directly connected to the vehicle. When the vehicle is driven on the road, the detection device moves synchronously with the vehicle and detects the road smoothness during the journey. Multiple sets of laser smoothness detectors 2 constitute a laser detection system, and multiple sets of camera components 3 constitute a camera system. The laser smoothness detectors 2 emit laser beams from the device through a laser ranging system, measure the reflection time and angle of the laser beam to the road surface, and obtain the elevation information of the road surface. At the same time, the camera components 3 can acquire image information of the road surface. The laser detection system and the camera system work together to obtain road smoothness information.
[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A road smoothness testing device, comprising a fixed rod assembly (1), characterized in that: The fixed rod assembly (1) is equipped with a laser flatness detector (2) and a camera assembly (3). The laser flatness detector (2) includes a first fixed sleeve (23), which is fixedly connected to the fixed rod assembly (1) by a second tightening screw (25). The camera assembly (3) includes a second fixed sleeve (32), which is fixedly connected to the fixed rod assembly (1) by a third tightening screw (34). The fixed rod assembly (1) includes a main rod (11), and auxiliary rods (12) are provided at both ends of the main rod (11). The auxiliary rods (12) are fixedly connected to the main rod (11) by a first tightening screw (13).
2. The road smoothness detection device according to claim 1, characterized in that: The laser flatness tester (2) includes a laser tester base (21) and a mounting base (22), wherein the laser tester base (21) is fixed to the mounting base (22) by screws.
3. The road smoothness detection device according to claim 2, characterized in that: The first fixing sleeve (23) is welded and fixed to the mounting base (22), and the first fixing sleeve (23) is sleeved on the fixing rod assembly (1).
4. The road smoothness testing device according to claim 1, characterized in that: The camera assembly (3) includes a camera base (31), and the camera base (31) is welded and fixed to the second fixing sleeve (32), which is sleeved on the fixing rod assembly (1).
5. The road smoothness testing device according to claim 1, characterized in that: The first fixing sleeve (23) has a first screw hole (24), and the second tightening screw (25) is threadedly connected to the first screw hole (24).
6. The road smoothness detection device according to claim 1, characterized in that: The second fixing sleeve (32) has a second screw hole (33), and the third tightening screw (34) is threadedly connected to the second screw hole (33).
7. The road smoothness testing device according to claim 1, characterized in that: The main rod (11) is configured as a hollow structure, and one end of the auxiliary rod (12) is slidably embedded inside the main rod (11).
8. A road smoothness testing device according to claim 7, characterized in that: Mounting plates (14) are welded and fixed on both sides of the main rod (11).
9. A road smoothness testing device according to claim 8, characterized in that: The mounting plate (14) has a slot (15).