Road surface detection device

Abstract

The utility model discloses a road surface detection device, which relates to the technical field of road surface flatness detection and comprises at least two detection units, and each detection unit is used for being installed on external mobile equipment and is arranged to be driven by the mobile equipment on a road surface to be detected to detect the flatness of the road surface to be detected. The projection of each detection unit in the moving direction of the mobile equipment has an interval; each detection unit comprises a vibration sensor. According to the utility model, the at least two detection units with the gap are arranged in the moving direction of the mobile equipment, so as to achieve the purposes of increasing sampling points and preventing the local unevenness of the road surface from being ignored and preventing the swinging radians from being superposed to influence the accuracy of the detection data.

Description

TECHNICAL FIELD

[0001] The utility model relates to road surface flatness detection technical field, concretely relates to a road surface detection device. BACKGROUND

[0002] In the highway construction process, it is crucial to evaluate the quality of the final formed road surface flatness. If there are pits or undulations on the road surface that exceed the design requirements, rectification is needed. Currently, the evaluation of road construction quality mainly relies on the detection of road flatness meters. Continuous flatness meters are usually used to measure the flatness of the road surface, and the data is used to judge the quality of road construction. This detection method usually installs the measuring instrument on a four-wheel drive frame similar to the vehicle chassis, operates through special control software, realizes automatic data acquisition, real-time display, recording and storage, and automatically generates data graphics and table reports, which is convenient for subsequent analysis and evaluation. The core principle is to continuously detect the height or distance change between the measuring instrument and the underlying road surface.

[0003] However, this detection method has certain limitations:

[0004] (1) Because of the small number of sampling points, the detection instrument cannot cover most of the positions of the road surface, which may cause some local unevenness to be ignored, affecting the accuracy of the overall evaluation;

[0005] (2) The measuring instrument is on a four-wheel drive frame, and is connected by a support. If there are many uneven road surfaces, the rear four-wheel drive frame will oscillate, and the complex horizontal and vertical coupled oscillation of the board wheels may occur after the superposition of the oscillation radius, affecting the detection data.

[0006] Therefore, the present application is proposed. UTILITY MODEL CONTENT

[0007] The utility model aims at providing a road surface detection device, which sets at least two detection units with gaps in the moving direction of the moving device to solve the problem that the detection instrument in the prior art cannot cover most positions of the road surface, causing some local unevenness to be ignored and the detection data to be inaccurate.

[0008] The utility model embodiment realizes the following technical scheme: the utility model embodiment provides a road surface detection device, which comprises at least two detection units, a single detection unit is used for being installed on an external moving device, and is arranged to be driven by the moving device on the road surface to be detected to detect the flatness of the road surface to be detected, and the projection of each detection unit in the moving direction of the moving device has a certain gap.

[0009] The single detection unit comprises a vibration sensor.

[0010] Optionally, the single detection unit further comprises a mounting shell, the mounting shell being configured to mount the single detection unit on the external mobile device;

[0011] The mounting shell has a top opening, and a bottom plate is arranged at the bottom of the mounting shell, the bottom plate is provided with a guide hole, and a column is arranged in the guide hole and can move axially in the guide hole;

[0012] The vibration sensor is arranged on the column, and a rolling wheel is arranged at the bottom of the column;

[0013] When the detection unit is mounted on the external mobile device, the rolling wheel can be in contact with the road surface to be detected, and the external mobile device can drive the rolling wheel to generate rolling friction with the road surface to be detected.

[0014] Optionally, a gap is formed between the column and the inner side wall of the mounting shell, and a plurality of sliding wheel assemblies are arranged on the column, and each sliding wheel assembly is arranged in the mounting shell, and when the column moves axially in the guide hole, each sliding wheel assembly can move axially in the mounting shell;

[0015] When the sliding wheel assembly is in contact with the inner side wall of the mounting shell, the gap between the column and the inner side wall of the mounting shell still exists.

[0016] Optionally, the mounting side of the mounting shell is an open structure, each sliding wheel assembly comprises a first sliding roller and a second sliding roller, the first sliding roller and the second sliding roller are both mounted on the column by a fixing member, and the first sliding roller is arranged on the mounting side of the mounting shell.

[0017] The first sliding roller can rotate around a central axis, and the second sliding roller can rotate around a central axis;

[0018] A gap is formed between the first sliding roller and the column, and a gap is formed between the second sliding roller and the column.

[0019] Optionally, when there are at least two sliding wheel assemblies, the sliding wheel assembly located at the lowest position can limit the downward movement range of the column, and the rolling wheel can limit the upward movement range of the column.

[0020] Optionally, a baffle is further arranged, and each detection unit is mounted on the baffle, and the baffle is configured to mount the detection unit on the external mobile device.

[0021] Optionally, each detection unit is arranged on the baffle at equal intervals in a transverse direction, and the transverse width of the detection unit on the baffle is greater than the transverse width of the external mobile device.

[0022] Optionally, the mounting surface of the mounting shell is extended with an extension ear on each side, a plurality of mounting holes are arranged on each extension ear, and the mounting holes are configured to mount the mounting shell on the baffle.

[0023] Optionally, the vibration sensor is installed at the top of the column, and a projection of the vibration sensor in the vertical direction falls within the upper end surface of the column.

[0024] Optionally, a rain cover is installed at the upper end of the baffle, and a projection of each detection unit in the vertical direction falls within the rain cover.

[0025] Compared with the prior art, the embodiments of the utility model have the following advantages and beneficial effects:

[0026] 1. The detection unit is mechanically connected and fixed on the external mobile device, the mobile device drives the detection unit to move on the road surface, the detection unit senses the flatness of the road surface through the vibration sensor, multiple detection units realize multi-point detection through certain spacing design, the structure expands the detection coverage range, reduces the possibility of local unevenness being ignored, improves the accuracy of overall evaluation, and the certain spacing design between the detection units reduces the influence of complex transverse and longitudinal coupled swings caused by uneven road surface on the detection data, and further improves the stability of the detection data.

[0027] 2. The detection unit includes a mounting shell, the mounting shell is mechanically connected and fixed on the external mobile device, the detection unit is kept stable during movement, the column is installed in the guide hole at the bottom of the mounting shell, axial movement is realized through the constraint of the guide hole, the vibration sensor is fixed on the column through the connecting piece (such as thread, buckle, etc.), and the vibration sensor and the column form an integral whole, and the rolling wheel is connected to the bottom of the column through the shaft, so that the rolling wheel can freely roll and contact the road surface.

[0028] When the detection unit is installed on the external mobile device, the rolling wheel contacts the road surface to be detected, the external mobile device drives the rolling wheel to roll on the road surface, the rolling wheel generates relative motion with the road surface through rolling friction, when the road surface has a pit, the rolling wheel drives the column to move downward in the guide hole, when the road surface has a protrusion, the rolling wheel drives the column to move upward in the guide hole, and the vibration sensor collects the vibration frequency of the column. The distribution of multiple detection units enables multiple detection units to cover a wider road surface area and reduces the possibility of local unevenness being ignored. The axial movement of the column in the guide hole enables the detection unit to adapt to the ups and downs of the road surface, ensures that the rolling wheel is always in contact with the road surface, and improves the stability and reliability of detection.

[0029] 3、The embodiment of the utility model discloses the gap between the stand and the inner side wall of the mounting shell, can reduce the direct contact between the stand and the mounting shell, thereby avoiding the contact between the stand and the external mobile device due to the vibration of the vehicle, affecting the detection data. At the same time, it can ensure that the stand moves axially freely in the guide hole, and the setting of the sliding wheel assembly and the spring steel ball reduces the friction between the stand and the mounting shell, improves the stability and precision of movement. When the sliding wheel assembly contacts the inner side wall of the mounting shell, there is still a gap between the stand and the inner side wall of the mounting shell, which further ensures that the stand has a certain degree of freedom during movement, avoiding wear and jam caused by direct contact.

[0030] Overall, the embodiment of the utility model provides the road surface detection device, at least two detection units with gaps are arranged in the moving direction of the mobile device, so as to increase the sampling point, avoid that the local unevenness of the road surface is ignored, the superposition of swing radian occurs, and the accuracy of the detection data is affected. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0032] Figure 1 The road surface detection device structure schematic view provided by the embodiment of the utility model;

[0033] Figure 2 The preferred structure schematic view of the road surface detection device provided by the embodiment of the utility model;

[0034] Figure 3 The detection unit structure schematic view provided by the embodiment of the utility model;

[0035] Figure 4 Another deformation structure schematic view of the detection unit structure provided by the embodiment of the utility model;

[0036] Figure 5 The baffle structure schematic view provided by the embodiment of the utility model.

[0037] Markings in the drawings and corresponding component names:

[0038] 1-Detection unit, 2-Vibration sensor, 3-Mounting housing, 4-Base plate, 5-Guide hole, 6-Column, 7-Rolling wheel, 8-Sliding wheel assembly, 9-First sliding roller, 10-Second sliding roller, 11-Baffle, 12-Extended ear, 13-Mounting hole, 14-Rainproof cover, 15-Spring steel ball. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of this utility model, it should be noted that the terms "first", "second", "third", etc. are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0043] Example

[0044] like Figure 1 As shown, this utility model embodiment provides a road surface detection device, including at least two detection units 1. Each detection unit 1 is used to be installed on an external mobile device and is configured to detect the flatness of the road surface to be tested after being driven by the mobile device on the road surface to be tested. There is a gap in the projection of each detection unit 1 in the moving direction of the mobile device. Each detection unit 1 includes a vibration sensor 2.

[0045] Specifically, a single detection unit 1 is installed on an external mobile device (such as the rear of a vehicle) to detect the smoothness of the road surface to be tested. The vibration sensor 2 can sense the vibration signal generated by the contact between the road surface and the detection unit 1. When the road surface is uneven (such as potholes or bumps) or smooth, the vibration sensor 2 will detect different vibration intensities and frequencies. Combined with the station information and the installation position of the single detection unit 1, the smoothness of the road surface can be accurately determined.

[0046] It should be noted that the external mobile device is not limited here, and can be set according to actual needs. For the convenience of understanding, the road surface detection device provided in the embodiments of the present application will be taken as an example with a vehicle. The road surface detection device is installed at the tail of the vehicle. When the vehicle travels on the road surface, the detection unit 1 is driven to move, so that the detection unit 1 can continuously detect the flatness of the road surface. Due to the gap between the projections of each detection unit 1 in the moving direction of the mobile device, the detection units 1 will not interfere with each other, and can independently detect the flatness of the road surface at their respective positions. At the same time, the existence of the gap expands the detection coverage and reduces the problem of local unevenness being ignored due to insufficient sampling points of a single detection unit 1. The detection unit 1 can be directly or indirectly fixed on the vehicle through mechanical connection (such as bolts, brackets, etc.). Here, it is not limited as long as it can achieve the purpose of sufficient installation stability. The vibration sensor 2 can be realized by using an existing sensor, and can be connected to the in-vehicle computer through existing technology for data display.

[0047] The embodiments of the present application expand the detection coverage through multi-point detection of the plurality of detection units 1, reduce the possibility of local unevenness being ignored, improve the accuracy of overall evaluation, and at the same time, due to the gap design between the detection units 1, reduce the influence of complex transverse and longitudinal coupled swinging caused by uneven road surface on the detection data, and further improve the stability of the detection data.

[0048] As shown in the examples of FIGS. 1 and 2, Figure 3 or Figure 4 As shown, the single detection unit 1 further comprises a mounting shell 3 for mounting the single detection unit 1 on the external mobile device; the mounting shell 3 is open at the top and has a bottom plate 4 provided at the bottom, the bottom plate 4 is provided with a guide hole 5, a stand 6 is arranged in the guide hole 5 and can move axially in the guide hole 5; the vibration sensor 2 is arranged on the stand 6, and the bottom of the stand 6 is provided with a rolling wheel 7; when the detection unit 1 is mounted on the external mobile device, the rolling wheel 7 can be in contact with the detection road surface, and the external mobile device can drive the rolling wheel 7 to roll on the detection road surface, thereby achieving accurate power transmission and reducing friction.

[0049] Specifically, in the embodiments of the present application, the mounting shell 3 is used to fix the single detection unit 1 on the external mobile device, so as to ensure that the detection unit 1 remains stable during movement. The stand 6 is installed in the guide hole 5 at the bottom of the mounting shell 3 and moves axially by being constrained by the guide hole 5. The vibration sensor 2 is fixed on the stand 6 by a connecting member (such as a thread, a buckle, etc.), and forms a whole with the stand 6. The rolling wheel 7 is connected to the bottom of the stand 6 through a shaft, so as to ensure that the rolling wheel 7 can rotate freely and be in contact with the road surface.

[0050] When the detection unit 1 is installed on the external mobile device, the rolling wheel 7 is in contact with the road surface to be detected, the external mobile device drives the rolling wheel 7 to roll on the road surface, and the rolling wheel 7 generates a certain range of vibration with the road surface through rolling friction. When the road surface has a pit, the rolling wheel 7 drives the stand column 6 to move downward in the guide hole 5, and when the road surface has a protrusion, the rolling wheel 7 drives the stand column 6 to move upward in the guide hole 5. The vibration sensor 2 collects the movement of the stand column 6 and converts the vibration signal into an electric signal. The axial movement ability of the stand column 6 in the guide hole 5 enables the detection unit 1 to adapt to the ups and downs of the road surface, ensures that the rolling wheel 7 is always in contact with the road surface, and improves the stability and reliability of the detection. At the same time, the bottom plate 4 can support and accommodate the falling vibration sensor 2, preventing the vibration sensor 2 from being damaged or lost after falling.

[0051] As a preferred embodiment of the utility model, a gap exists between the stand column 6 and the inner side wall of the mounting shell 3, and a plurality of sliding wheel assemblies 8 are arranged on the stand column 6. A single sliding wheel assembly 8 is located in the mounting shell 3, and when the stand column 6 moves axially in the guide hole 5, the single sliding wheel assembly 8 can move axially in the mounting shell 3. When the sliding wheel assembly 8 is in contact with the inner side wall of the mounting shell 3, a gap still exists between the stand column 6 and the inner side wall of the mounting shell 3. This structure can reduce the direct contact between the stand column 6 and the mounting shell 3, thereby avoiding the influence of vehicle vibration on the detection data. The sliding wheel assembly 8 can ensure the free axial movement of the stand column 6 in the guide hole 5, reduce friction, and improve the stability and precision of the vibration sensor. When the sliding wheel assembly 8 is in contact with the inner side wall of the mounting shell 3, a gap still exists between the stand column 6 and the inner side wall of the mounting shell 3, further ensuring that the stand column 6 has a certain degree of freedom during movement, avoiding excessive wear and jamming caused by direct contact.

[0052] Exemplarily, the mounting side of the mounting shell 3 is a side opening structure, a single sliding wheel assembly 8 includes a first sliding roller 9 and a second sliding roller 10, the first sliding roller 9 and the second sliding roller 10 are both mounted on the horizontally opposite sides of the stand column 6 through fixing members, and the first sliding roller 9 is located on the mounting side of the mounting shell 3. The first sliding roller 9 can rotate around the central axis, and the second sliding roller 10 can rotate around the central axis. A gap exists between the first sliding roller 9 and the stand column 6, and a gap exists between the second sliding roller 10 and the stand column 6.

[0053] Specifically, the installation side of the installation shell 3 is a side opening structure, which facilitates the installation and maintenance of the stand column 6 and the sliding wheel assembly 8. The stand column 6 serves as a support component of the vibration sensor 2 and the rolling wheel 7, and can move up and down in the guide hole 5 to adapt to the ups and downs of the road surface. The first sliding roller 9 and the second sliding roller 10 are both installed on the horizontally opposite sides of the stand column 6 through fixing members. When there are pits or protrusions on the road surface, the rolling wheel 7 will drive the stand column 6 to move up and down in the guide hole 5. The sliding wheel assembly 8 reduces the direct contact between the stand column 6 and the installation shell 3, thereby avoiding the contact between the stand column 6 and the external mobile device caused by the vibration of the vehicle, which affects the detection data. There is a gap between the first sliding roller 9 and the second sliding roller 10 and the stand column 6, which ensures that the stand column 6 has a certain degree of freedom during movement, avoiding wear and jam caused by direct contact. At the same time, the device can adapt to different working environments and road conditions, including temperature changes, humidity changes, etc., to ensure stable operation of the device under various working conditions. Of course, in other embodiments, the installation side of the installation shell 3 can also be a closed structure, which is not limited here.

[0054] It should be noted that the installation direction of the first sliding roller 9 and the second sliding roller 10 is not limited here and can be Figure 3 facing the left and right sides of the installation shell 3, or Figure 4 facing the installation side of the installation shell 3 and the opposite side of the installation side, both of which can be achieved. Preferably, a spring steel ball 15 can be provided on the central axis of the first sliding roller 9 and the second sliding roller 10, and the spring steel ball 15 is in contact with the inner side wall of the installation shell 3 through the elastic force of the spring. The mounting structure on the stand column 6 can be achieved by using existing structures. For example, a hole structure can be machined on the stand column 6, and the fixing member can be a bolt, a rotating pin, a bearing or other structures. In the embodiment of the present application, the pre-tightening force of the spring steel ball 15 ensures the stable contact between the roller and the installation shell 3, and reduces the contact between the stand column 6 and the external mobile device caused by the vibration of the vehicle, which affects the detection data.

[0055] The bottom plate 4 is located between the sliding wheel assembly 8 and the rolling wheel 7, the lowest sliding wheel assembly 8 (the size of the sliding wheel assembly 8 is greater than the size of the guide hole 5) can limit the downward movement range of the stand column 6, and the rolling wheel 7 can limit the upward movement range of the stand column 6. The structure ensures that the stand column 6 will not excessively sink when moving downward, avoids the distortion of detection data or damage to the device caused by excessive downward movement, and the arrangement of multiple sliding wheel assemblies 8 can provide more support points and enhance the overall stability of the device; when there is a protrusion on the road surface, the rolling wheel 7 will drive the stand column 6 to move upward, but due to the size limitation (greater than the size of the guide hole 5) of the rolling wheel 7, the upward movement range of the stand column 6 is effectively controlled to ensure that the stand column 6 will not excessively rise when moving upward. Similarly, when the sliding wheel assembly 8 is provided with one, the sliding wheel assembly 8 can limit the downward movement range of the stand column 6, and the rolling wheel 7 can limit the upward movement range of the stand column 6.

[0056] In order to improve the stability of the device, the detection device further comprises a baffle plate 11, and each single detection unit 1 is installed on the baffle plate 11. The baffle plate 11 is used to install the detection unit 1 on the external mobile equipment. In the embodiment of the utility model, the baffle plate 11 provides a stable support surface to ensure that the detection unit 1 remains stable during movement. The baffle plate 11 is fixed to the external mobile equipment by mechanical connection, thereby connecting the detection unit 1 and the external mobile equipment, and ensuring that the entire device will not loosen or shift during movement. As shown in the example, the baffle plate 11 can be provided in a perforated structure, and the perforated structure is used as a fulcrum to vertically fix the baffle plate 11 to the bumper at the rear of the vehicle by bolts. After use, the baffle plate 11 can be removed, and the original function of the vehicle can be restored normally. Almost no modification is required for the vehicle. Of course, in other embodiments without the baffle plate 11, multiple detection units 1 can be fixed to the bumper at the rear of the vehicle by screws, and after use, the original function of the vehicle can be restored normally. Figure 5

[0057] As a preferred embodiment of the utility model, each detection unit 1 is arranged in an equal interval transverse arrangement on the baffle plate 11, and the transverse width covered by the detection unit 1 on the baffle plate 11 can be greater than the transverse width of the external mobile equipment. This arrangement ensures the uniform distribution of the detection unit 1 in the transverse direction, which can cover a wider road surface area. By making the transverse width covered by the detection unit 1 on the baffle plate 11 greater than the transverse width of the external mobile equipment, the detection unit 1 can cover the road surface area on both sides of the external mobile equipment, thereby improving the comprehensiveness and accuracy of detection. It should be noted that the size of the gap between the adjacent two detection units 1 is not limited here and can be set according to the actual situation of the road to be detected, as long as the purpose of sufficient detection comprehensiveness and accuracy can be achieved.

[0058] ​It should also be noted that the connection method between the mounting housing 3 and the baffle 11 is not limited here; it can be riveted, glued, threaded, etc., as long as sufficient connection stability is achieved. For example, the mounting surface of the mounting housing 3 has extended ears 12 on both sides, and each extended ear 12 has several mounting holes 13. The mounting holes 13 are used to mount the mounting housing 3 onto the baffle 11. Specifically, the extended ears 12 provide additional mounting space and connection points, and the mounting holes 13 are used to fix the mounting housing 3 onto the baffle 11, ensuring the stability of the mounting housing 3 on the baffle 11. The mounting holes 13 are used to fix the mounting housing 3 onto the baffle 11 using bolts, nuts, or other mechanical fasteners. This fixing method ensures a firm connection between the mounting housing 3 and the baffle 11. The number of mounting holes 13 is not limited here and can be set according to actual needs.

[0059] In a preferred embodiment of this invention, the vibration sensor 2 is mounted on the top of the column 6, and its vertical projection falls onto the upper surface of the column 6. This mounting method allows the vibration sensor 2 to directly sense the vertical vibration of the column 6, thereby accurately reflecting the road surface smoothness. The vibration sensor 2 can be fixed to the top of the column 6 by threads, clips, or other mechanical connectors, ensuring its stable position on the column 6 and reducing sensor loosening or displacement caused by vehicle vibration. Because the vibration sensor 2 is mounted on the top of the column 6, its position is relatively high, enabling it to more directly sense the vertical vibration of the column 6, reducing errors caused by the structure of the column 6 itself, and improving the accuracy and reliability of the measurement.

[0060] Furthermore, such as Figure 2 As shown, a rain cover 14 is installed on the upper end of the baffle 11, and the vertical projection of each detection unit 1 falls within the rain cover 14. This structure ensures that the rain cover 14 provides comprehensive protection for the detection unit 1. The rain cover 14 can be fixed to the baffle 11 by bolts, clips, or other mechanical connectors, ensuring its stable position on the baffle 11 and preventing loosening or displacement due to vibration or movement of external mobile devices. In this embodiment of the invention, the function of the rain cover 14 is to prevent rainwater, dust, and other external contaminants from entering the detection unit 1, thereby protecting the internal components of the detection unit 1 (such as the vibration sensor 2, the sliding wheel assembly 8, etc.) from damage. The rain cover 14 of this embodiment of the invention can improve the adaptability of the device to harsh weather conditions, ensuring that the detection unit 1 can still work normally in rainy, snowy, or other harsh environments, extending the service life of the device. The vertical projection of each detection unit 1 falls within the rain cover 14, ensuring that the rain cover 14 can completely cover the detection unit 1, providing all-round protection.

[0061] Overall, the detection device provided by the embodiment of the utility model is simple to operate, can be installed on a vehicle and quickly acquire vibration data of a road pavement when the vehicle is running, can record in real time and provide a basis for road condition evaluation, has relatively low cost, is cheaper than some professional road detection equipment, and is simple to install and maintain. The whole detection process has simple structure and low part prices, only needs to install the device at the tail of the automobile, drive it to move to collect data, does not need complex operation steps and professional operators, reduces the detection threshold, and is beneficial to popularization and application in practical engineering. The vibration sensor 2 of the embodiment of the utility model is completely isolated from the external mobile equipment and does not directly contact the external mobile equipment, and is only indirectly connected with the rolling wheel 7 through the stand 6, so as to perceive the flatness of the pavement, ensure that the vibration sensor 2 can work independently and is not affected by the vibration of the external mobile equipment, and thus improve the accuracy and reliability of the detection data.

[0062] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model. It should be noted that the structure or components shown in the drawings are not necessarily drawn to scale, and the utility model omits the description of known components and processing technologies and processes to avoid unnecessary limitation of the utility model.

Claims

1. A road surface detecting device characterized by comprising: The application relates to a road flatness detection device, which comprises at least two detection units (1), each of the detection units (1) is arranged on an external moving device and is used for detecting the flatness of a to-be-detected road after the external moving device drives on the to-be-detected road, and the projections of the detection units (1) in the moving direction of the moving device have a spacing. Each of the detection units (1) comprises a vibration sensor (2).

2. The road surface detection device according to claim 1, characterized by Each of the detection units (1) further comprises a mounting shell (3) which is used for mounting the detection unit (1) on the external moving device. The mounting shell (3) is open at the top and is provided with a bottom plate (4) at the bottom, the bottom plate (4) is provided with a guide hole (5), a vertical column (6) is arranged in the guide hole (5) and can axially move in the guide hole (5). The vibration sensor (2) is arranged on the vertical column (6), and the bottom of the vertical column (6) is provided with a rolling wheel (7). When the detection unit (1) is arranged on the external moving device, the rolling wheel (7) can be in contact with the to-be-detected road, and the external moving device can drive the rolling wheel (7) to produce rolling friction with the to-be-detected road.

3. A road surface detection device according to claim 2, characterised in that The vertical column (6) and the inner side wall of the mounting shell (3) have a spacing, a plurality of sliding wheel assemblies (8) are arranged on the vertical column (6), each of the sliding wheel assemblies (8) is arranged in the mounting shell (3), and each of the sliding wheel assemblies (8) can axially move in the mounting shell (3) when the vertical column (6) axially moves in the guide hole (5). When the sliding wheel assembly (8) is in contact with the inner side wall of the mounting shell (3), the spacing between the vertical column (6) and the inner side wall of the mounting shell (3) still exists.

4. The road surface detection device according to claim 3, characterized by The mounting side of the mounting shell (3) is open, each of the sliding wheel assemblies (8) comprises a first sliding roller (9) and a second sliding roller (10), the first sliding roller (9) and the second sliding roller (10) are arranged on the horizontal opposite sides of the vertical column (6) through fixing members, and the first sliding roller (9) is arranged on the mounting side of the mounting shell (3). The first sliding roller (9) can rotate around a central axis, and the second sliding roller (10) can rotate around a central axis. The first sliding roller (9) and the vertical column (6) have a spacing, and the second sliding roller (10) and the vertical column (6) have a spacing.

5. The road surface detection device according to claim 3, wherein The bottom plate (4) is arranged between the sliding wheel assemblies (8) and the rolling wheel (7), the lowest sliding wheel assembly (8) can limit the downward moving range of the vertical column (6), and the rolling wheel (7) can limit the upward moving range of the vertical column (6).

6. The road surface detection device according to claim 2, wherein The application further comprises a baffle (11), each of the detection units (1) is arranged on the baffle (11), and the baffle (11) is used for mounting the detection units (1) on the external moving device.

7. A road surface detection device according to claim 6, characterised in that Each of the detection units (1) is arranged equidistantly and transversely on the baffle (11), and the covering transverse width of the detection unit (1) on the baffle (11) is greater than the transverse width of the external mobile device.

8. The road surface detection device according to claim 6, wherein The mounting surface of the mounting shell (3) extends outward on both sides to form extension ears (12), and a plurality of mounting holes (13) are arranged on the extension ears (12) on both sides, which are used for mounting the mounting shell (3) on the baffle (11).

9. The road surface detection device according to claim 6, wherein The vibration sensor (2) is mounted on the top of the stand column (6), and the projection of the vibration sensor (2) in the vertical direction falls on the upper end surface of the stand column (6), and the vibration sensor (2) is connected to the external mobile device in a wired manner.

10. The road surface detection device according to claim 6, wherein The upper end of the baffle (11) is provided with a rain cover (14), and the projection of each of the detection units (1) in the vertical direction falls in the rain cover (14).

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