Road condition index evaluation instrument

Abstract

The utility model discloses a road condition index evaluation instrument which comprises a machine body, an opening groove is formed in the rear side of the machine body, a lower supporting arm is fixed in the opening groove, an upper supporting arm is connected to the lower supporting arm through a pitching rotating shaft, a horizontal rotating support is arranged at the top of the upper supporting arm, and a two-dimensional linear array camera is arranged on the horizontal rotating support. A traction mechanism is arranged on the front side of the machine body. A pavement condition index evaluation module and a power supply module are arranged on the machine body, and a power switch is arranged on the power supply module. The traction device can be mounted at the tail of a traction vehicle through the traction mechanism, and is more portable; the two-dimensional line-scan digital camera is matched with the horizontal rotating support, the upper supporting arm, the pitching rotating shaft and the lower supporting arm, the angle and height of the two-dimensional line-scan digital camera can be adjusted, the measurement requirements of different road surfaces are met, and the overall structure of the evaluation instrument is simpler.

Description

Technical Field

[0001] This utility model relates to the field of road surface evaluation technology, specifically to a road surface condition index assessment instrument. Background Technology

[0002] The pavement condition index (PDI) is a key standardized indicator for assessing road usage and maintenance needs. It evaluates the condition of the road surface, providing a comprehensive score for each road segment based on the type, severity, and distribution of pavement damage, thereby effectively determining maintenance priorities and resource allocation. Existing PPI devices suffer from the following problems: current methods typically rely on manual or inspection equipment to statistically analyze pavement defects before calculating the PPI. These methods are time-consuming, labor-intensive, have low automation, and lack flexibility. Therefore, to address these technical issues, it is necessary to provide a pavement condition index assessment instrument that is simpler in structure and more portable. Summary of the Invention

[0003] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a road surface condition index assessment instrument with a simple structure and greater portability.

[0004] To achieve the aforementioned objectives, the technical solution adopted by this invention is as follows: It includes a body, an opening slot on the rear side of the body, a lower support arm fixed within the opening slot, an upper support arm connected to the lower support arm via a pitch pivot, a horizontal rotating bracket at the top of the upper support arm, a two-dimensional line scan camera mounted on the horizontal rotating bracket, and a traction mechanism on the front side of the body; the body is equipped with a road condition index assessment module and a power module, the two-dimensional line scan camera is electrically connected to the road condition index assessment module, the power module is electrically connected to the road condition index assessment module, and a power switch is mounted on the power module.

[0005] Furthermore, the traction mechanism includes a traction plate, a drag plate, and a traction component. The traction plate is fixed to the front side of the machine body, and the traction plate and the drag plate are connected by the traction component. The traction plate and the drag plate are provided with through holes that cooperate with the traction component.

[0006] Furthermore, the traction component is a bolt or rivet.

[0007] Furthermore, the road surface condition index assessment module and the power supply module are located on the front side of the machine body.

[0008] Furthermore, the bottom of the machine body is provided with four sliding wheels, and a nested wheel axle for mounting the sliding wheels is fixed at the bottom of the machine body. The bottom of the nested wheel axle is provided with a mounting hole, and the wheel axle for mounting the sliding wheels is provided in the mounting hole.

[0009] Furthermore, the bottom of the machine body is equipped with a mounting plate for installing nested wheel axles.

[0010] Furthermore, the body includes an upper support and a lower support, both of which are U-shaped, with the upper support fixed to the top of the lower support.

[0011] Furthermore, the horizontal rotating bracket includes a limiting ring and a mounting plate, which are connected by several connecting rods. The top of the upper support arm is provided with an annular groove that mates with the limiting ring.

[0012] Furthermore, the bottom of the lower support arm is fixed in the opening slot by a bottom mounting shaft.

[0013] The beneficial effects of this utility model are as follows:

[0014] This utility model's road surface condition index assessment instrument, equipped with a two-dimensional linear array camera and an algorithm processor, automatically counts road surface defects and calculates the road surface condition index. Specifically, the operator can connect the road surface condition index assessment instrument to the rear of a vehicle and secure it to the rear of the vehicle using a tow rack. Then, the power module is turned on to activate the road surface condition index assessment module and the two-dimensional linear array camera. As the vehicle moves slowly, the road surface condition index assessment instrument moves accordingly. The two-dimensional linear array camera acquires road surface images in real time, and the road surface condition index assessment module analyzes the acquired data and calculates the road surface condition index, thereby automatically completing the assessment of road surface conditions.

[0015] This utility model can be installed at the rear of a towing vehicle via a traction mechanism, making it more portable; the two-dimensional line array camera, together with a horizontal rotating bracket, upper support arm, pitch rotating shaft and lower support arm, can realize the adjustment of the angle and height of the two-dimensional line array camera to meet the measurement needs of different road surfaces, and the overall structure of the evaluation instrument is simpler. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A schematic diagram of the front view structure in the diagram;

[0018] Figure 3 This is an enlarged structural diagram of point A in this utility model;

[0019] The symbols for each component are as follows:

[0020] 1. Two-dimensional line scan camera; 2. Horizontal rotating bracket; 3. Upper support arm; 4. Road surface condition index assessment module; 5. Power module; 6. Trailer plate; 7. Towing component; 8. Towing plate; 9. Upper bracket; 10. Lower bracket; 11. Bottom mounting shaft; 12. Power switch; 13. Sliding wheel; 14. Lower support arm; 15. Pitch rotating shaft; 16. Nested wheel axle; 17. Wheel axle; 18. Cable connection box. Detailed Implementation

[0021] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0022] like Figure 1 and 2 As shown, the road condition index assessment instrument includes a body. An opening slot is provided on the rear side of the body, and a lower support arm 14 is fixed within the opening slot. The bottom of the lower support arm 14 is fixed to the opening slot via a bottom mounting shaft 11. An upper support arm 3 is connected to the top of the lower support arm 14 via a pitch pivot shaft 15. The upper support arm 3 and the lower support arm 14 are connected via the pitch pivot shaft 15, allowing the upper support arm 3 to rotate on the lower support arm 14. The pitch pivot shaft 15 can be bolted to rotatably connect the lower support arm 14 and the upper support arm 3, or a friction disc can be provided on the lower support arm 14 to increase the resistance between them. A horizontal rotating bracket 2 is provided on the upper support arm 3, and a two-dimensional line scan camera 1 is mounted on the horizontal rotating bracket 2. A traction mechanism is provided on the front side of the body. The instrument body is equipped with a road condition index assessment module 4 and a power supply module 5. The two-dimensional line scan camera 1 is electrically connected to the road condition index assessment module 4, and the power supply module 5 is also electrically connected to the road condition index assessment module 4. The road condition index assessment module 4 is preferably a smart-PCIv1 module, and the power supply module 5 is preferably an SFX power supply module. A power switch 12 is installed on the power supply module 5. The road condition index assessment module 4 and the power supply module 5 are located on the front side of the instrument body, away from the two-dimensional line scan camera 1. The road condition index assessment module 4 and the power supply module 5 provide good counterweight, resulting in a more uniform overall mass distribution of the assessment instrument. The two-dimensional line scan camera 1 is connected to the road condition index assessment module 4 via the upper support arm 3 and the lower support arm 14, and then to the power supply module 5 via internal wires.

[0023] The traction mechanism includes a towing plate 8, a trailing plate 6, and a traction component 7. The towing plate 8 is fixed to the front side of the machine body. The towing plate 8 and the trailing plate 6 are connected by the traction component 7. The towing plate 8 and the trailing plate 6 have through holes that mate with the traction component 7. The traction component 7 is preferably a bolt or a rivet. The trailing plate 6 is welded to the rear of the towing vehicle. The towing plate 8 is connected to the trailing plate 6 via the traction component 7, allowing the road condition index assessment instrument to move by towing the vehicle.

[0024] The body includes an upper support 9 and a lower support 10. Both the upper support 9 and the lower support 10 are U-shaped. The upper support 9 is fixed to the top of the lower support 10. The upper support 9 and the lower support 10 are connected to form a whole. The upper support 9 and the lower support 10 are integrally molded to form a body.

[0025] like Figure 3 As shown, the bottom of the machine body is provided with four sliding wheels 13, and a nested wheel axle 16 for mounting the sliding wheels 13 is fixed to the bottom of the machine body. The bottom of the nested wheel axle 16 is provided with a mounting hole, and a wheel axle 17 for mounting the sliding wheels 13 is provided in the mounting hole. A mounting plate for mounting the nested wheel axle 16 is also provided at the bottom of the machine body. The mounting plate is welded and fixed to the machine body, and the top of the nested wheel axle 16 is mounted and fixed to the mounting plate.

[0026] The horizontal rotating bracket 2 includes a limiting ring and a mounting plate, which are connected by several connecting rods. The top of the upper support arm 3 has an annular groove that mates with the limiting ring. The horizontal rotating bracket 2 is rotatably mounted on the upper support arm 3 via the limiting ring, and the two-dimensional line scan camera 1 is fixed to the mounting plate with screws. The two-dimensional line scan camera 1 can be horizontally rotated and its angle adjusted via the horizontal rotating bracket 2, thus better adapting to different road surfaces.

[0027] Working Process and Principle: In use, the road condition index assessor is placed on the road surface where the road condition index is to be calculated, and connected to the rear of the vehicle via the towing frame 6. The operator can adjust the rotation angle of the two-dimensional linear scan camera 1 and the relative position of the upper support arm 3 and the lower support arm 14 according to the actual road conditions to ensure the camera covers the maximum possible road surface acquisition area. Simultaneously, the power module 5 is switched on (switch 12) to start the road condition index assessor module 4 and the two-dimensional linear scan camera 1. As the vehicle moves slowly, the assessor moves smoothly via the sliding wheels 13, and the algorithm processor 4 calculates the road condition index in real time. Compared to traditional manual or semi-automatic calculation methods, this method significantly improves calculation speed and automation. This invention achieves real-time calculation of the road condition index through automated equipment and algorithm processing, greatly reducing manual intervention and simplifying the operation process. Especially in large-area road assessment, it significantly improves work efficiency, is easy to use, and to a certain extent improves a currently lacking technological field, realizing automated road condition evaluation.

Claims

1. A road surface condition index assessment instrument, characterized in that, The device includes a body, an opening slot is provided on the rear side of the body, a lower support arm (14) is fixed in the opening slot, an upper support arm (3) is connected to the top of the lower support arm (14) through a pitch pivot (15), a horizontal rotating bracket (2) is provided on the upper support arm (3), a two-dimensional line array camera (1) is provided on the horizontal rotating bracket (2), and a traction mechanism is provided on the front side of the body. The machine body is equipped with a road condition index assessment module (4) and a power supply module (5). The two-dimensional line array camera (1) is electrically connected to the road condition index assessment module (4), and the power supply module (5) is electrically connected to the road condition index assessment module (4). The power supply module (5) is equipped with a power switch (12).

2. The road surface condition index assessment instrument according to claim 1, characterized in that, The traction mechanism includes a traction plate (8), a drag plate (6), and a traction component (7). The traction plate (8) is fixed to the front side of the machine body. The traction plate (8) and the drag plate (6) are connected by the traction component (7). The traction plate (8) and the drag plate (6) are provided with through holes that cooperate with the traction component (7).

3. The road surface condition index assessment instrument according to claim 2, characterized in that, The traction component (7) is a bolt or a rivet.

4. The road surface condition index assessment instrument according to claim 1, characterized in that, The road surface condition index assessment module (4) and the power supply module (5) are located on the front side of the machine body.

5. The road surface condition index assessment instrument according to claim 1, characterized in that, The bottom of the machine body is provided with four sliding wheels (13), and the bottom of the machine body is fixed with a nested wheel axle (16) for mounting the sliding wheels (13). The bottom of the nested wheel axle (16) is provided with a mounting hole, and the mounting hole is provided with a wheel axle (17) for mounting the sliding wheels (13).

6. The road surface condition index assessment instrument according to claim 5, characterized in that, The bottom of the machine body is provided with a mounting plate for mounting the nested wheel axle (16).

7. The road surface condition index assessment instrument according to claim 1, characterized in that, The body includes an upper support (9) and a lower support (10), both of which are U-shaped, and the upper support (9) is fixed to the top of the lower support (10).

8. The road surface condition index assessment instrument according to claim 1, characterized in that, The horizontal rotating bracket (2) includes a limiting ring and a mounting plate. The limiting ring and the mounting plate are connected by several connecting rods. The top of the upper support arm (3) is provided with an annular groove that cooperates with the limiting ring.

9. The road surface condition index assessment instrument according to claim 1, characterized in that, The bottom of the lower support arm (14) is fixed in the opening groove by the bottom mounting shaft (11).

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