Roadbed compactness detection structure based on vibration detection
By using a vibration-based subgrade compaction detection structure, roadbed vibration data can be collected in real time using roller bearings and vibration sensors. This solves the problems of roadbed damage caused by existing detection structures and long detection cycles, and enables real-time detection of roadbed compaction and quality control during construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-04-14
AI Technical Summary
Existing roadbed compaction testing structures cause damage to the roadbed, have long testing cycles, and are difficult to implement in real time for testing and quality control during construction.
A roadbed compaction detection structure based on vibration detection is adopted. The roadbed is rolled and compacted by a roller, and vibration data is collected in real time by a vibration sensor. The controller obtains the roadbed compaction based on the vibration data, realizing real-time online detection.
It enables real-time online detection of roadbed compaction, avoiding damage to the roadbed and reducing construction costs.
Smart Images
Figure CN224119525U_ABST
Abstract
Description
Technical Field
[0001] This utility model patent relates to the technical field of roadbed compaction testing, and more specifically, to a roadbed compaction testing structure based on vibration detection. Background Technology
[0002] With the rapid development of highway construction and the continuous growth of traffic volume in my country, people have put forward higher requirements for the load-bearing capacity of highways. In highway construction, the compaction of the roadbed is a crucial process. If the compaction is not up to standard, the highway is prone to damage such as rutting, cracking, potholes, and subsidence in the early stages of use, which will seriously affect traffic order and cause significant economic losses.
[0003] If the roadbed compaction is insufficient during construction, it needs to be recompacted, which will delay the construction period. On the other hand, excessive compaction of the roadbed not only wastes construction resources, but also makes roadbed compaction testing an important step in highway construction.
[0004] Existing technologies for testing roadbed compaction all have some shortcomings and defects. The ring cutter method, sand cone method, and core drilling method can all damage the compacted roadbed, while the nuclear density method poses safety risks and is costly. Furthermore, current roadbed compaction testing methods typically perform compaction testing after highway construction is completed, rather than conducting full-process quality control of roadbed compaction during construction, making real-time monitoring and quality control during construction difficult. Utility Model Content
[0005] The purpose of this invention is to provide a roadbed compaction detection structure based on vibration detection, aiming to solve the problems of roadbed damage and long detection cycle in the existing technology.
[0006] This utility model is implemented as follows: a roadbed compaction detection structure based on vibration detection includes a frame that is moved by a vehicle body and a roller shaft that is rolled on the frame and rolls on the roadbed. The frame body and the roller shaft are movably connected as one unit. During the movement of the vehicle body on the roadbed, the frame body moves synchronously with the vehicle body, and the roller shaft rolls on the roadbed.
[0007] The frame has a front crossbar located in front of the roller shaft. The front crossbar extends in the same direction as the roller shaft. The front crossbar is equipped with a vibration sensor that collects vibration data of the front crossbar and transmits the vibration data to the controller.
[0008] Furthermore, the front crossbar and the roller shaft are spaced apart to form a front gap.
[0009] Furthermore, the frame includes two parallel side rods arranged at intervals, with an interval region between the two side rods; the roller shaft is located in the interval region, and the two ends of the roller shaft are respectively rotatably connected to the middle of the two side rods, and the two ends of the front crossbar are respectively connected to the front ends of the two side rods.
[0010] Furthermore, each end of the roller shaft has a rotating head extending outwards, and the rotating head is rotatably connected to the middle of the side rod.
[0011] Furthermore, the frame has a rear crossbar located behind the roller pressing shaft and connected to the vehicle body. The rear crossbar extends in the same axial direction as the roller pressing shaft, and both ends of the rear crossbar are connected to the rear ends of two side bars, respectively.
[0012] Furthermore, the rear crossbar and the roller shaft are spaced apart to form a rear gap.
[0013] Furthermore, a connector is provided in the middle of the rear crossbar. The connector is arranged to protrude away from the roller shaft and has a connecting hole that runs through the top and bottom and connects to the vehicle body.
[0014] Furthermore, the top of the front crossbar is recessed to form a recessed area with a top opening. The outer periphery of the recessed area has an outer peripheral sidewall arranged around it, and an outer peripheral elastic layer is attached to the outer peripheral sidewall. The vibration sensor is placed in the recessed area and fixedly connected to the front crossbar. There is an outer peripheral gap between the outer periphery of the vibration sensor and the outer peripheral elastic layer.
[0015] Furthermore, a swing frame for spatial swing is connected to the front crossbar, and a solar panel located above the vibration sensor is connected to the swing frame. The top of the solar panel has a light-receiving surface, and the bottom of the solar panel has a boss. The swing frame is hinged to the boss.
[0016] A battery is installed in the front crossbar. The battery is electrically connected to the vibration sensor. The battery is electrically connected to the solar panel through wires. The wires are embedded in the swing frame.
[0017] Compared with existing technologies ， The roadbed compaction detection structure based on vibration detection provided by this utility model integrates the roller shaft with the frame, allowing it to roll relative to the frame. As the vehicle travels on the roadbed, the roller shaft presses against the roadbed. Depending on the roadbed compaction degree, the vibration data of the roller shaft varies. Furthermore, the front crossbar of the frame vibrates synchronously with the roller shaft. Vibration sensors collect the vibration data of the front crossbar, thereby obtaining the roadbed vibration data. The controller can then obtain the roadbed compaction degree based on the vibration data. In this way, real-time online detection of roadbed compaction degree is achieved without damaging the roadbed. Attached Figure Description
[0018] Figure 1 This is a cross-sectional view of the roadbed compaction detection structure based on vibration detection provided by this utility model;
[0019] Figure 2 This is a top view schematic diagram of the roadbed compaction detection structure based on vibration detection provided by this utility model. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0021] The implementation of this utility model will be described in detail below with reference to specific embodiments.
[0022] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0023] Reference Figure 1-2 The image shown is a preferred embodiment of the present invention.
[0024] The roadbed is the foundation of a highway. It is an earthwork structure formed by excavation or filling. The main function of the roadbed is to provide the necessary conditions for pavement laying, bear the static and dynamic loads of the pavement and traffic loads, and transfer and diffuse the loads to the depths of the foundation.
[0025] The roadbed compaction detection structure based on vibration detection includes a frame that moves with the vehicle body and a roller 100 that is rolled on the frame and rolls on the roadbed. The frame and the roller 100 are movably connected as one unit. During the movement of the vehicle body on the roadbed, the frame moves synchronously with the vehicle body, and the roller 100 rolls on the roadbed.
[0026] The vehicle body can be a road roller or other equipment, as long as it can drive the roller bearing 100 to roll on the roadbed. During the rolling of the roller bearing 100 on the roadbed, the roadbed can be compacted simultaneously.
[0027] The frame has a front crossbar 200 located in front of the roller pressing shaft 100. The front crossbar 200 extends in the same direction as the roller pressing shaft 100. A vibration sensor 400 is provided on the front crossbar 200 to collect vibration data of the front crossbar 200 and transmit the vibration data to the controller.
[0028] Depending on the degree of compaction of the roadbed, the vibration amplitude of the roller 100 on the roadbed will vary, resulting in different vibration data. In other words, different degrees of compaction of the roadbed can be directly reflected in the vibration data of the roller 100. Studies have shown that at the same vibration frequency, the softer the roadbed and the lower the degree of compaction, the greater the vibration displacement and the lower the angular velocity of the roller 100; conversely, the more compacted the roadbed and the higher the degree of compaction, the greater the vibration angular velocity and the smaller the displacement of the roller 100.
[0029] The aforementioned vibration-based roadbed compaction detection structure integrates the roller bearing 100 with the frame, allowing it to roll relative to the frame. As the vehicle travels on the roadbed, the roller bearing 100 presses against the roadbed. Depending on the roadbed compaction degree, the vibration data of the roller bearing 100 varies. Furthermore, the front crossbar 200 of the frame vibrates synchronously with the roller bearing 100. The vibration sensor 400 collects the vibration data of the front crossbar 200, thereby obtaining the roadbed vibration data. The controller can then determine the roadbed compaction degree based on the vibration data. This achieves roadbed compaction degree detection without damaging the roadbed.
[0030] In addition, during the process of testing the compaction degree of the roadbed, the roller 100 simultaneously rolls and compacts the roadbed. Thus, the compaction degree of the roadbed can be tested simultaneously during the roadbed construction process. Based on the compaction degree obtained in real time, the compaction degree of the roadbed can be improved simultaneously, which greatly reduces the construction cost.
[0031] In this embodiment, the front crossbar 200 and the roller pressing shaft 100 are arranged at a distance to form a front gap 203. This facilitates the setting of the front crossbar 200 and does not interfere with the rolling of the roller pressing shaft 100.
[0032] In this embodiment, the frame includes two parallel and spaced side bars 500 with a gap between them; the roller shaft 100 is located in the gap, and the two ends of the roller shaft 100 are rotatably connected to the middle of the two side bars 500 respectively; the two ends of the front crossbar 200 are connected to the front ends of the two side bars 500 respectively.
[0033] In this way, the two side rods 500 are arranged facing each other on both sides of the roller shaft 100, providing movable support for the roller shaft 100 and keeping the roller shaft 100 in a rolling state.
[0034] In this embodiment, rotating heads 101 extend outward from both ends of the roller pressing shaft 100, and the rotating heads 101 are rotatably connected to the middle of the side rod 500. This facilitates the rotatable connection between the roller pressing shaft 100 and the side rod 500. When the roller pressing shaft 100 rolls and compacts on the roadbed, the rotating heads 101 rotate within the side rod 500.
[0035] In this embodiment, the frame has a rear crossbar 300 located behind the roller pressing shaft 100 and connected to the vehicle body. The rear crossbar 300 extends axially in the same direction as the roller pressing shaft 100, and both ends of the rear crossbar 300 are connected to the rear ends of two side bars 500, respectively. In this way, the front crossbar 200, the two side bars 500, and the rear crossbar 300 enclose a square-shaped closed area, and the roller pressing shaft 100 rotates within the closed area, which facilitates the connection between the frame and the roller pressing shaft 100.
[0036] In this embodiment, the rear crossbar 300 and the roller pressing shaft 100 are arranged at intervals to form a rear interval 303. In this way, there will be no interference between the rear crossbar 300 and the roller pressing shaft 100, and it is convenient to connect the frame and the vehicle body.
[0037] In this embodiment, a connector 301 protrudes from the middle of the rear crossbar 300. The connector 301 protrudes away from the roller shaft 100 and has a connecting hole 302 that extends vertically and connects to the vehicle body. Thus, when the frame is connected to the vehicle body, the front end of the vehicle body can be directly inserted into the connecting hole 302 to achieve a movable connection between the frame and the vehicle body, and the frame can also be disassembled from the vehicle body.
[0038] In this embodiment, the top of the front crossbar 200 is recessed to form a recessed area 201 with a top opening. The outer periphery of the recessed area 201 has an outer peripheral sidewall arranged around it, and an outer peripheral elastic layer 202 is attached to the outer peripheral sidewall. The vibration sensor 400 is placed in the recessed area 201 and is fixedly connected to the front crossbar 200. There is an outer peripheral gap between the outer periphery of the vibration sensor 400 and the outer peripheral elastic layer 202.
[0039] The recessed area 201 facilitates the installation of the vibration sensor 400 and ensures that the vibration sensor 400 is integrated with the front crossbar 200. An outer peripheral elastic layer 202 is provided on the outer peripheral sidewall to prevent collisions with the outer periphery of the vibration sensor 400, thus protecting the vibration sensor 400.
[0040] In this embodiment, a swing frame 600 for spatial swinging is connected to the front crossbar 200, and a solar panel 601 located above the vibration sensor 400 is connected to the swing frame 600. The top of the solar panel has a light-receiving surface, and the bottom of the solar panel has a boss. The swing frame 600 is hinged to the boss.
[0041] A battery is installed in the front crossbar 200. The battery is electrically connected to the vibration sensor 400. The battery is electrically connected to the solar panel 601 through wires. The wires are embedded in the swing frame 600, so the battery can be used to directly power the vibration sensor 400.
[0042] The swing bracket 600 can swing, thereby adjusting the orientation of the solar panel's sun-facing surface to better direct sunlight. Furthermore, the solar panel 601 is positioned above the vibration sensor 400, providing protection for it. When the vibration sensor 400 is not in use, the solar panel 601 can be swung to cover the recessed area 201, sealing it and further protecting the vibration sensor 400.
[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 roadbed compaction detection structure based on vibration detection, characterized in that, It includes a frame that is moved by a vehicle body and a roller shaft that is rolled on the frame body and rolls on the roadbed. The frame body and the roller shaft are movably connected as one unit. During the movement of the vehicle body on the roadbed, the frame body moves synchronously with the vehicle body, and the roller shaft rolls on the roadbed. The frame has a front crossbar located in front of the roller shaft. The front crossbar extends in the same direction as the roller shaft. The front crossbar is equipped with a vibration sensor that collects vibration data of the front crossbar and transmits the vibration data to the controller.
2. The roadbed compaction detection structure based on vibration detection as described in claim 1, characterized in that, The front crossbar and the roller shaft are arranged at intervals to form a front gap.
3. The roadbed compaction detection structure based on vibration detection as described in claim 1, characterized in that, The frame includes two parallel, spaced-apart side bars with a gap between them; the roller shaft is located in the gap, and its two ends are rotatably connected to the middle of the two side bars respectively; the two ends of the front crossbar are connected to the front ends of the two side bars respectively.
4. The roadbed compaction detection structure based on vibration detection as described in claim 3, characterized in that, The roller shaft has rotating heads extending outward at both ends, and the rotating heads are rotatably connected to the middle of the side rod.
5. The roadbed compaction detection structure based on vibration detection as described in claim 3, characterized in that, The frame has a rear crossbar located behind the roller pressing shaft and connected to the vehicle body. The rear crossbar extends in the same axial direction as the roller pressing shaft, and both ends of the rear crossbar are connected to the rear ends of two side bars, respectively.
6. The roadbed compaction detection structure based on vibration detection as described in claim 5, characterized in that, The rear crossbar and the roller shaft are arranged at intervals to form a rear gap.
7. The roadbed compaction detection structure based on vibration detection as described in claim 5, characterized in that, The rear crossbar has a connecting head protruding from the middle. The connecting head protrudes away from the roller shaft and has a connecting hole that runs through the top and bottom and connects to the vehicle body.
8. The roadbed compaction detection structure based on vibration detection as described in any one of claims 1 to 7, characterized in that, The top of the front crossbar is recessed to form a recessed area with a top opening. The outer periphery of the recessed area has an outer peripheral sidewall, and an outer peripheral elastic layer is attached to the outer peripheral sidewall. The vibration sensor is placed in the recessed area and fixedly connected to the front crossbar. There is an outer peripheral gap between the outer periphery of the vibration sensor and the outer peripheral elastic layer.
9. The roadbed compaction detection structure based on vibration detection as described in any one of claims 1 to 7, characterized in that, The front crossbar is connected to a swing frame that allows for spatial swinging. A solar panel located above a vibration sensor is connected to the swing frame. The top of the solar panel has a light-receiving surface, and the bottom of the solar panel has a boss. The swing frame is hinged to the boss. A battery is installed in the front crossbar. The battery is electrically connected to the vibration sensor. The battery is electrically connected to the solar panel through wires. The wires are embedded in the swing frame.