Pavement quality detection device

Abstract

The utility model belongs to the technical field of highway pavement detection equipment, and particularly relates to a pavement quality detection device. According to the technology, two bottom plates are arranged left and right, and a punching assembly used for punching a road surface is arranged between the left bottom plate and the right bottom plate; first grooves are formed in the bottoms of the left bottom plate and the right bottom plate correspondingly, sliding plates are arranged in the first grooves correspondingly, moving assemblies are installed at the bottoms of the sliding plates correspondingly, and a driving assembly used for driving the sliding plates to move up and down is arranged between the two bottom plates. The universal wheel can be operated in a more time-saving and labor-saving manner.

Description

Technical Field

[0001] This utility model belongs to the technical field of highway pavement testing equipment, and in particular relates to a pavement quality testing device. Background Technology

[0002] After road construction is completed and the pavement has completely dried and reached its design strength, quality testing of the pavement structure and materials is required. This testing involves drilling holes in the pavement to visually observe whether the thickness of each structural layer meets design requirements. For example, asphalt pavements typically include a surface layer, base layer, and subbase layer. Drilling allows for the measurement of the actual thickness of each layer, determining if there are any instances of insufficient or uneven thickness. It also facilitates the inspection of the bonding between structural layers; poor interlayer bonding can lead to problems such as interlayer slippage.

[0003] Currently, when drilling and testing road surfaces, a core drilling machine is used. When in use, the core drilling machine is equipped with casters at the bottom, which facilitates the movement of the core drilling machine to the location where drilling is required. Each caster is installed in a movable manner, so multiple casters can be stored in sequence during drilling to avoid the problem of drilling displacement caused by the casters rolling during the drilling process.

[0004] In the above operation, although moving the casters can achieve the purpose of stabilizing the drilling, there are multiple casters, and they need to be moved off the ground one by one manually, so the operation is time-consuming and laborious. Utility Model Content

[0005] The purpose of this invention is to provide a road surface quality testing device that avoids the time-consuming and laborious problem of operating the casters during the drilling and testing process.

[0006] The road surface quality testing device includes two base plates arranged side by side, with a drilling component for drilling holes in the road surface disposed between the two base plates; a first groove is provided on the bottom of each of the two base plates, and a sliding plate is disposed in each of the first grooves; a moving component is installed on the bottom of each sliding plate; and a driving component for driving the sliding plate to move up and down is disposed between the two base plates.

[0007] Furthermore, the drilling assembly includes two mounting boxes arranged side-by-side. The mounting box on the left has no right side wall and is fixed to the top of the left base plate, while the mounting box on the right has no left side wall and is fixed to the top of the right base plate. Each mounting box contains a vertically arranged threaded post. The upper end of each threaded post is rotatably connected to its corresponding mounting box, and the lower end of each threaded post is connected to a first servo motor installed in the mounting box. A support plate is horizontally arranged between the two mounting boxes. Connecting blocks are fixed to the left and right side walls of the support plate. The connecting blocks have first threaded holes for the threaded posts to pass through, and the threaded posts and first threaded holes are threadedly engaged. A second servo motor is installed at the bottom of the support plate, and a drill barrel for drilling the ground is installed at the power output end of the rotating shaft of the second servo motor.

[0008] Furthermore, the bottom of the drill barrel is serrated.

[0009] Furthermore, handles are installed on the rear sidewalls of the mounting box.

[0010] Furthermore, the bottom of the support plate is provided with a second groove for mounting a second servo motor.

[0011] Furthermore, the drive assembly includes a connecting box without left and right side walls, and is installed between two base plates. A third groove is provided on the right side wall of the left base plate and the left side wall of the right base plate, and the third groove communicates with the interior of the first groove. A dual-axis motor is installed inside the connecting box. The two rotating shafts of the dual-axis motor each have a first gear mounted on their power output ends via a rotating shaft. A second threaded hole, communicating vertically, is provided on the slide plate. A threaded rod, threadedly engaged with the second threaded hole, is threaded through the second threaded hole. The upper end of the threaded rod is rotatably connected to the third groove. A second gear, meshing with the first gear, is fitted onto the threaded rod located above the slide plate. A sliding groove is provided in the first groove for the slide plate to slide vertically, and the slide plate slides vertically with the sliding groove.

[0012] Furthermore, the bottom of the threaded rod is independently fitted with a collar, which is fixed in the first groove by a connecting rod.

[0013] Furthermore, the movable component comprises at least two omnidirectional wheels, which are arranged sequentially from front to back on the bottom of the skateboard.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention features two base plates, left and right, each with a first groove at its bottom. A sliding plate is placed within each groove, and a movable component (a swivel wheel) is mounted on the bottom of each sliding plate. A drive component, which moves the sliding plate up and down, is located between the two base plates. Therefore, when the drive component moves the sliding plate up and down, it also moves the swivel wheel up and down. When the swivel wheel moves upward, it is stored in the first groove, preventing direct contact with the ground during drilling and ensuring more stable drilling. When the swivel wheel moves downward, it is removed from the first groove, allowing it to be easily moved to the drilling location. This design, with its retractable swivel wheel, facilitates operation and avoids the time-consuming and laborious process of moving multiple swivel wheels individually, as is common in existing technologies. This invention provides a more time-saving and labor-saving way to operate the swivel wheel. Attached Figure Description

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

[0017] Figure 2 for Figure 1 Top view of the structure;

[0018] Figure 3 This is a schematic diagram of the structure after the skateboard has moved down;

[0019] Figure 4 for Figure 1 Front view structural diagram;

[0020] Figure 5 for Figure 1 A schematic diagram of the structure viewed from below;

[0021] The components in the diagram are named as follows: 1. Base plate; 2. Casters; 3. Threaded rod; 4. Second gear; 5. First gear; 6. Shaft; 7. Dual-axis motor; 8. Connecting box; 9. Drill barrel; 10. Second servo motor; 11. Support plate; 12. Connecting block; 13. Mounting box; 14. Threaded column; 15. First servo motor; 16. Slide plate; 17. Collar; 18. Handle. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention. Example

[0023] The road surface quality testing device described in this embodiment, such as Figure 1 and Figure 2As shown, it includes two base plates 1 arranged side by side, both base plates 1 having a long strip structure;

[0024] like Figure 1 and Figure 4As shown, a mounting box 13 is provided between the two base plates 1. There are two mounting boxes 13 arranged side by side. The mounting box 13 on the left has no right side wall and is fixed to the top of the left base plate 1, and the mounting box 13 on the right has no left side wall and is fixed to the top of the right base plate 1. Each mounting box 13 has a vertically installed threaded post 14. The upper end of each threaded post 14 is rotatably connected to the corresponding mounting box 13, and the lower end of each threaded post 14 is connected to a first servo motor 15 installed inside the mounting box 13. A support plate 11 is horizontally provided between the two mounting boxes 13. Connecting blocks 12 are fixed to the left and right side walls of the support plate 11. The connecting blocks 12 have first threaded holes for the threaded posts 14 to pass through, and the threaded posts 14 are threadedly engaged with the first threaded holes. A second servo motor 10 is installed at the bottom of the support plate 11, and a drill barrel 9 for drilling the ground is installed at the power output end of the rotating shaft of the second servo motor 10; this section of the scheme constitutes a drilling assembly for drilling holes in the road surface; the bottom of the mounting box 13 is fixed to the top of the base plate 1; when the upper end of the threaded column 14 is rotatably connected to the corresponding mounting box 13, a first blind hole is opened in the inner top of both the left and right mounting boxes 13, and a first bearing is installed in each of the first blind holes. The outer ring of the first bearing is fixed in the first blind hole. The upper end of the threaded column 14 on the left is fixed to the inner ring of the first bearing in the top of the left mounting box 13, and the upper end of the threaded column 14 on the right is fixed to the inner ring of the first bearing in the top of the right mounting box 13. Therefore, through the above design, The upper end of the threaded column 14 can rotate freely, thus achieving a rotary connection. Specifically, during installation, the first servo motor 15 is installed at the bottom of the inner sides of the mounting boxes 13 on both sides. The power output end of the rotating shaft of the first servo motor 15 in the left mounting box 13 is connected to the lower end of the left threaded column 14, and the power output end of the rotating shaft of the first servo motor 15 in the right mounting box 13 is connected to the lower end of the right threaded column 14. The two first servo motors 15 are electrically connected to a battery and a control switch. The battery is installed inside the mounting box 13, and the control switch is installed on the outer wall of the mounting box 13. During installation, the right side wall of the connecting block 12 on the left side is fixed to the left side wall of the support plate 11, and the right side wall of the connecting block 12... The left side wall is fixed to the right side wall of the support plate 11. When in use, the control switch is turned on to make the two first servo motors 15 rotate coaxially. The first servo motors 15 drive the threaded column 14 to rotate. Because the connecting block 12 is located on the threaded column 14 and the support plate 11 is fixed between the two connecting blocks 12, when the threaded column 14 rotates coaxially, it can drive the two connecting blocks 12 to move up or down. The connecting blocks 12 drive the support plate 11 to move up or down. The inside of the drill barrel 9 is hollow and the bottom is open. The top of the drill barrel 9 is fixedly connected to the second servo motor 10. The second servo motor 10 is also electrically connected to the control switch and the battery. The battery is installed on the support plate 11 and the control switch is installed on the outer side wall of the mounting box 13.In use, the second servo motor 10 is started by turning on the control switch. The second servo motor 10 drives the drill barrel 9 to rotate. During the rotation of the drill barrel 9, the threaded column 14 is driven to rotate by the first servo motor 15, which drives the support plate 11 to move downward. As the support plate 11 moves downward and the drill barrel 9 rotates, holes can be drilled into the ground. After the road surface construction is completed and the road surface is completely dry and has reached the design strength, when it is necessary to check the road surface quality, the drill barrel 9 is moved to the position where drilling is required, and the drill barrel 9 is aligned with the position where drilling is required. Then, the support plate 11 is driven to move downward and the drill barrel 9 is driven to rotate. As the drill barrel 9 rotates and moves downward, it can drill holes into the road surface. During the drilling process, because the bottom of the drill barrel 9 has an opening, road surface material can be sampled, allowing a portion of the road surface core sample to enter the drill barrel 9. For example, in asphalt road surfaces, after drilling is completed, the drill barrel 9 is... The core sample is extracted because asphalt pavement typically includes a surface layer, base layer, and subbase layer. By observing the boreholes drilled by the pavement drill cylinder 9, the actual thickness of each layer can be measured to determine if there is insufficient or uneven thickness. It also facilitates the inspection of the bonding between structural layers. Poor bonding may lead to problems such as interlayer slippage, thus achieving the purpose of quality inspection. Furthermore, after the drill cylinder 9 is removed, a portion of the pavement core sample remains inside. By tapping the drill cylinder 9, the core sample can be extracted. The volume and mass of the core sample are then measured to calculate its actual density, which is compared with the design density to determine the material's compactness. The extracted core sample can also be used for tests such as compressive strength and flexural strength. Taking asphalt concrete as an example, after standard curing, the extracted core sample undergoes a Marshall test to determine its stability and flow value, thereby evaluating the load-bearing capacity of the pavement material.

[0025] In practice, the first servo motor 15 in the punching assembly can also be installed on the inner top of the mounting box 13, the top of the threaded post 14 is connected to the first servo motor 15, and the bottom of the threaded post 14 is rotatably connected to the inner bottom of the mounting box 13.

[0026] like Figure 1 As shown, the bottom of the drill barrel 9 is serrated. The serrated design makes it easier to drill holes in the ground during the rotation of the drill barrel 9.

[0027] like Figure 1 As shown, the bottom of the support plate 11 is provided with a second groove for mounting the second servo motor 10. The design of the second groove can reduce the space occupied by the second servo motor 10 and increase its practicality during use.

[0028] like Figure 1 and Figure 5As shown, the bottom of both the left and right base plates 1 is provided with a first groove, and a slide plate 16 is provided in the first groove. The slide plate 16 has a rectangular structure, and the first groove is designed as a rectangular groove according to the structure of the slide plate 16.

[0029] like Figure 1 and Figure 5 As shown, at least two casters 2 are installed on the bottom of each skateboard 16, and the casters 2 are arranged from front to back on the bottom of the skateboard 16; this section of the design constitutes a moving component; therefore, the design of the casters 2 makes it easy to move this design to the position where drilling is required;

[0030] In implementation, the moving component can also be replaced with a scroll wheel;

[0031] like Figure 1 and Figure 2 As shown, handles 18 are installed on the rear side walls of the mounting box 13. By pushing the handles 18, the design can be easily pushed to the position where drilling is required under the action of the casters 2.

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, a connecting box 8 is provided between the two base plates 1. The connecting box 8 has no left or right side walls and is installed between the two base plates 1. A third groove is provided on the right side wall of the left base plate 1 and the left side wall of the right base plate 1. The third groove communicates with the interior of the first groove. A dual-axis motor 7 is installed in the connecting box 8. The two rotating shafts of the dual-axis motor 7 are each connected to a first gear 5 via a rotating shaft 6. A second threaded hole is provided on the slide plate 16. A threaded rod 3 is threadedly fitted into the second threaded hole. The upper end of the threaded rod 3 is rotatably connected to the third groove. A second gear 4 that meshes with the first gear 5 is fitted on the threaded rod 3 located above the slide plate 16. A sliding groove is provided in the first groove for the slide plate 16 to slide up and down. The slide plate 16 slides up and down with the sliding groove. This section of the solution constitutes a drive assembly for driving the slide plate 16 to move up and down. The dual-axis motor 7 can also be called a dual-axis extended asynchronous motor. A dual-axis extended asynchronous motor is an asynchronous motor with two extended shafts. The dual-axis motor 7 is existing known technology and will not be described in detail here. The dual-axis motor 7 is electrically connected to a control switch and a battery. The battery can be installed inside the connection box 8, and the control switch can be installed on the outer wall of the mounting box 13. The two rotating shafts of the dual-axis motor 7 can rotate simultaneously in the same direction or in opposite directions. When the upper end of the threaded rod 3 is rotatably connected to the third groove, a second blind hole is provided at the top of the third groove. A second bearing is installed in the second blind hole, and the outer ring of the second bearing is fixed inside the second blind hole. The upper end of the threaded rod 3 is fixed to the inner ring of the second bearing. The front, rear, left, and right side walls of the slide plate 16 are all in contact with the groove wall of the first groove. Therefore, the slide plate 16 is limited to the first groove and can only move up and down within the second groove. When the first gear 5 and the second gear 4 mesh, according to... Figure 1 In the orientation, the rotating shaft 6 is horizontally positioned, and the threaded rod 3 is vertically positioned. Therefore, the second gear 4 and the first gear 5 are bevel gears. Thus, when the dual-shaft motor 7 drives the rotating shaft 6 to rotate, the rotating shaft 6 drives the first gear 5 to rotate, and the first gear 5 can drive the second gear 4 and the threaded rod 3 to rotate. During the rotation of the threaded rod 3, because the threaded rod 3 is threadedly engaged with the slide plate 16, and the slide plate 16 is limited within the first groove, the rotation of the threaded rod 3 can drive the slide plate 16 to move up and down, thereby driving the universal wheels 2 at the bottom of the slide plate 16 to move up or down. Figure 1 The orientation of the two sets of rotating shafts 6, second gear 4, first gear 5, threaded rod 3, and slide plate 16 is such that the threads of the two threaded rods 3 have the same direction of rotation. Therefore, to achieve synchronous up-and-down movement of the two slide plates 16, the two rotating shafts 6 of the dual-axis motor 7 rotate in opposite directions, thereby driving the two first gears 5 to rotate in opposite directions. This, in turn, drives the two second gears 4 to rotate in the same direction, thus enabling the two slide plates 16 to move up or down simultaneously. The height between the slide plate 16 and the universal wheel 2 is less than the height of the first groove, therefore, according to... Figure 1In the orientation of the slide plate 16, the slide plate 16 moves upward, thus driving the caster wheel 2 upward. At this point, the caster wheel 2 can be stored in the first groove. During use, the base plate 1 is in contact with the ground, thus increasing the contact area with the ground during drilling, allowing for more stable drilling of the road surface. When it is necessary to move this design, it is then... Figure 3 In the orientation of the design, the slide plate 16 moves downwards, thus driving the caster wheel 2 downwards. At this point, the caster wheel 2 can contact the ground, and the position of the base plate 1 is raised. This makes it easy to move the design to different positions. When it is moved to the appropriate drilling position, the slide plate 16 is driven to move the caster wheel 2 upwards and store it in the first groove, thus completing the drilling. During this operation, the caster wheel 2 can be stored in or moved out of the first through hole by operating the control switch of the dual-axis motor 7. This makes it easy to move the caster wheel 2 and avoids the problem of cumbersome operation caused by manually moving multiple caster wheels 2 one by one in the prior art. This design is more time-saving and labor-saving in use and has a certain degree of practicality.

[0033] In practice, the dual-axis motor 7 in the drive assembly can also be directly replaced with two motors, each connected to one of the two rotating shafts 6.

[0034] like Figure 1 and Figure 5 As shown, the bottom of the threaded rod 3 is independently fitted with a collar 17, which is fixed in the first groove by a connecting rod. Specifically, a third bearing is installed on the inner wall of the collar 17, and the outer ring of the third bearing is fixed to the inner wall of the collar 17. The lower end of the threaded rod 3 is fixed to the inner ring of the third bearing. There are two connecting rods, symmetrically installed on the outer wall of the collar 17. One end of the connecting rod is fixed to the collar 17, and the other end is at the groove wall of the first groove. Therefore, through the above design, the threaded rod 3 can rotate freely within the collar 17, and the collar 17 can limit the bottom of the threaded rod 3, thus increasing the stability of the threaded rod 3 during rotation.

[0035] In specific usage: First, as Figure 3 Position the drill bit 9 according to the location specified in the diagram, move it onto the road surface, and align it with the location requiring drilling and inspection. Then proceed as follows... Figure 1In the center position, the dual-axis motor 7 drives the rotating shaft 6 to rotate, the rotating shaft 6 drives the first gear 5 to rotate, the first gear 5 drives the second gear 4 to rotate, the second gear 4 drives the threaded rod 3 to rotate. When the threaded rod 3 drives the slide plate 16 to move upward, the slide plate 16 can drive the universal wheel 2 to be stored in the first groove of the base plate 1, at which time the base plate 1 is in contact with the ground; then the first servo motor 15 drives the threaded column 14 to rotate, the threaded column 14 drives the support plate 11 and the connecting block 12 to move downward, thereby driving the drill barrel 9 to move downward. Then the second servo motor 10 is turned on to drive the drill barrel 9 to rotate. The drill barrel 9 rotates and moves downward. During the process, holes can be drilled into the road surface. After drilling is completed, the drill cylinder 9 can be removed, and the quality of the road surface can be inspected by observing the drilled holes. In this process, by storing the casters 2 and making the base plate 1 contact the ground, the stability of the drill cylinder 9 during drilling can be increased. At the same time, storing the casters 2 can be completed simply by operating the control switch of the dual-axis motor 7. Therefore, unlike the existing technology, it is not necessary to manually operate each caster 2 to store them, which is time-consuming and labor-intensive. This design is more time-saving and labor-saving in use.

Claims

1. A road surface quality testing device, comprising two base plates (1) arranged side by side, characterized in that: A drilling component for drilling holes in the road surface is provided between the two bottom plates (1) on the left and right sides; a first groove is provided at the bottom of each of the two bottom plates (1), and a sliding plate (16) is provided in each of the first grooves. A moving component is installed at the bottom of each sliding plate (16), and a driving component for driving the sliding plate (16) to move up and down is provided between the two bottom plates (1).

2. The road surface quality testing device according to claim 1, characterized in that: The drilling assembly includes two mounting boxes (13) arranged side by side. The mounting box (13) on the left has no right side wall and is fixed to the top of the left base plate (1). The mounting box (13) on the right has no left side wall and is fixed to the top of the right base plate (1). Each mounting box (13) has a vertically arranged threaded post (14). The upper end of each threaded post (14) is rotatably connected to the corresponding mounting box (13), and the lower end of each threaded post (14) is connected to a device installed in the mounting box (13). First servo motor (15); a support plate (11) is horizontally arranged between the two mounting boxes (13), and connecting blocks (12) are fixed on both the left and right side walls of the support plate (11). The connecting blocks (12) are provided with a first threaded hole for the threaded column (14) to pass through, and the threaded column (14) and the first threaded hole are threadedly engaged; a second servo motor (10) is installed at the bottom of the support plate (11), and a drill barrel (9) for drilling the ground is installed at the power output end of the rotating shaft of the second servo motor (10).

3. The road surface quality testing device according to claim 2, characterized in that: The bottom of the drill barrel (9) is serrated.

4. The road surface quality testing device according to claim 2, characterized in that: Each of the mounting boxes (13) has a handle (18) installed on its rear side wall.

5. The road surface quality testing device according to claim 2, characterized in that: The bottom of the support plate (11) is provided with a second groove for mounting the second servo motor (10).

6. The road surface quality testing device according to claim 1, characterized in that: The drive assembly includes a connecting box (8), which has no left or right side walls and is installed between two bottom plates (1). The right side wall of the left bottom plate (1) and the left side wall of the right bottom plate (1) are provided with a third groove, which is connected to the inside of the first groove. A dual-axis motor (7) is installed in the connecting box (8). The two rotating shafts of the dual-axis motor (7) are each equipped with a first gear (5) through a rotating shaft (6). The slide plate (16) is provided with a second threaded hole that is connected vertically. A threaded rod (3) is threadedly fitted into the second threaded hole. The upper end of the threaded rod (3) is rotatably connected to the third groove. A second gear (4) that meshes with the first gear (5) is fitted on the threaded rod (3) above the slide plate (16). A sliding groove is provided in the first groove for the slide plate (16) to slide up and down. The slide plate (16) and the sliding groove slide up and down.

7. The road surface quality testing device according to claim 6, characterized in that: The bottom of the threaded rod (3) is independently fitted with a collar (17), which is fixed in the first groove by a connecting rod.

8. The road surface quality testing device according to claim 1, characterized in that: The moving component is at least two omnidirectional wheels (2), which are arranged from front to back on the bottom of the skateboard (16).

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