A road pavement structure depth inspection device and method thereof

Abstract

This invention discloses a road surface texture depth inspection device and method, belonging to the field of road inspection technology. It includes a mobile frame, a lifting module, an upper support frame, and a lower support frame. A dual-station spiral trajectory cleaning and leveling mechanism is installed on the lower support frame. This mechanism includes a rotary table, a radial transfer frame, a rotation control component, a synchronous radial transfer component, a sand pushing component, and a suction component. The sand pushing component and the suction component are respectively installed at both ends of the lower side of the radial transfer frame. Multiple camera modules are installed at the lower end of the rotary table. An automatic sand feeding mechanism is installed on the upper support frame. Through this method, by driving the working ends of the sand pushing component and the suction component to move sequentially along the spiral trajectory from the inside to the outside, the road surface is finely cleaned and cleaned, and standardized sand spreading is performed. This avoids dust and impurities in the road surface texture gaps from affecting the subsequent spreading of fine sand, and achieves automated and continuous inspection of the road surface texture depth.

Description

Technical Field

[0001] This invention relates to the field of road inspection technology, specifically to a road surface texture depth inspection device and method. Background Technology

[0002] The texture depth of a road surface is an important indicator of road surface roughness, which directly affects the macroscopic roughness, drainage performance, and skid resistance of the road surface.

[0003] Chinese patent CN115787413B discloses a measuring device for detecting the structural depth of municipal road surfaces. This device can spread fine sand into a neat circle, reducing the influence of existing impurities in the pores and improving the accuracy of structural depth measurement. It includes: a windshield with a sand-filling hopper fixedly installed on it; a dust-exhausting fan fixedly installed on the outer wall of the windshield; a hollow shaft rotatably installed inside the windshield, capable of rising and falling relative to the windshield; an inner tube rotatably installed coaxially inside the hollow shaft, with its input end connected to the output end of the sand-filling hopper; and sand-spreading plates, each with a fixed mounting shaft. At least three sets of sand-spreading plates are rotatably mounted on the outer circumference of the hollow shaft by the mounting shaft. Brushes are installed on the sand-spreading plates, and the orientation of the brushes is adjusted as the sand-spreading plates rotate. However, this device and existing technologies still have the following technical problems:

[0004] 1. This device uses a sand-spreading plate to flatten fine sand, which not only changes the existing testing procedures, but also makes it easy for sand to accumulate on the lower side of its hollow shaft and inner tube, causing some fine sand to be unable to be spread evenly and affecting the measurement accuracy.

[0005] 2. The device cleans the road surface crevices with brushes on the sand-spreading plate and sucks the dust generated by the road surface cleaning to the outside of the windshield through a dust exhaust fan. Some impurities will still remain in the road surface crevices. In addition, the device needs to be stopped and the sand-spreading plate needs to rotate to switch between its dust suction and sand spreading modes, which affects the measurement efficiency.

[0006] Based on this, the present invention designs a road surface structure depth inspection device and method to solve the above problems. Summary of the Invention

[0007] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a road surface structure depth inspection device and method.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A road surface structure depth inspection device, comprising a mobile frame;

[0010] A lifting module is fixedly installed at the upper end of the mobile frame, a lower support frame is fixedly installed at the moving end of the lifting module, an upper support frame is fixedly installed at the upper end of the lower support frame, and a shield is fixedly installed at the lower end of the lower support frame.

[0011] The lower support frame is equipped with a dual-station spiral trajectory cleaning and leveling mechanism, which includes a rotary table, a radial transfer frame, a rotation control component, a synchronous radial transfer component, a sand pushing component, and a suction component. The rotary table is rotatably connected to the lower support frame via bearings. The rotation control component is installed on the upper support frame, and its output end is connected to the rotary table via a drive. A radial groove is formed along the radial direction of the rotary table, and a radial transfer frame is slidably connected within the radial groove. The synchronous radial transfer component is installed on the rotary table, and its output end is connected to the radial transfer frame via a drive. The sand pushing component and the suction component are respectively installed at both ends of the lower side of the radial transfer frame. Multiple camera modules are installed at the lower end of the rotary table for photographing the spread sand.

[0012] An automatic sand feeding mechanism is installed on the upper support frame, and the discharge end of the automatic sand feeding mechanism is coaxially arranged with the rotary table.

[0013] Furthermore, the synchronous radial transfer assembly includes a driving bevel gear, a driven bevel gear, a lead screw, and a fixed frame. The fixed frame is fixedly installed on the upper end of the rotary table. The lead screw is rotatably connected to the fixed frame through a bearing, and the lead screw is threadedly connected to the radial transfer frame through a threaded sleeve. The driving bevel gear is fixedly installed on the upper end of the lower support frame and located on the outer edge of the rotary table. The driven bevel gear is fixedly connected to the end of the lead screw away from the rotation center of the rotary table, and the driving bevel gear and the driven bevel gear are meshed together.

[0014] Furthermore, the sand-pushing assembly includes a sliding rod, a leveling block, a floating push assembly, and a synchronous rotation assembly. The upper end of the sliding rod is rotatably connected to one side of the radial transfer frame via a bearing. The synchronous rotation assembly is installed between the lower end of the rotary table and the sliding rod, and is used to drive the sliding rod to rotate when the radial transfer frame slides in the radial groove. The floating push assembly is installed at the lower end of the radial transfer frame, the leveling block is connected to the lower end of the sliding rod, and the output end of the floating push assembly is connected to the leveling block.

[0015] Furthermore, the synchronous rotation assembly includes a driven gear and a drive rack. The driven gear is fixedly connected to the outer wall of the slide bar, and the drive rack is fixedly installed at the lower end of the rotary table and arranged parallel to the radial groove. The driven gear and the drive rack are meshed together.

[0016] Furthermore, the suction assembly includes a suction pipe, a suction head, a second electric actuator, and an anti-tangling suction assembly. The upper end of the suction pipe is slidably connected to the side of the radial transfer frame away from the slide bar, and the lower end of the suction pipe is fixedly connected to the suction head. The lower outer edge of the suction head is evenly distributed with bristles to increase the cleaning effect on the road surface. The second electric actuator is fixedly installed at the lower end of the radial transfer frame, and its output end is fixedly connected to the suction pipe. The anti-tangling suction assembly is installed on the upper support frame and connected to the lower support frame. The suction end of the anti-tangling suction assembly is connected to the upper end of the suction pipe.

[0017] Furthermore, the anti-tangling suction assembly includes a self-organizing pipe assembly, a sleeve, a rotary joint, and an air pump. The rotary joint is fixedly connected to the upper support frame, and the sleeve is installed at the lower end of the rotary joint, with the sleeve coaxial with the rotating platform. The air pump is fixedly installed at the upper end of the upper support frame, and the air inlet of the air pump is connected to the sleeve through a pipe. The self-organizing pipe assembly is installed at the upper end of the rotating platform, and both ends of the self-organizing pipe assembly are connected to the upper end of the suction pipe and the sleeve, respectively.

[0018] Furthermore, the self-organizing pipeline assembly includes an outer air pipe and an inner air pipe. The inner air pipe is fixedly installed on the upper end of the radial transfer frame, and the outer air pipe is fixedly installed on the upper end of the rotating platform. The inner air pipe and the outer air pipe are slidably connected with a clearance fit. The end of the outer air pipe away from the inner air pipe is connected to the upper end of the suction pipe through a pipe, and the end of the inner air pipe away from the outer air pipe is connected to the sleeve pipe through a pipe.

[0019] Furthermore, the automatic sand feeding mechanism includes a storage bin, a discharge valve, and a telescopic sand feeding assembly. The storage bin is fixedly installed on the upper end of the upper support frame, and a discharge valve is fixedly installed at the discharge end of the storage bin. A telescopic sand feeding assembly is installed at the discharge end of the discharge valve.

[0020] Furthermore, the telescopic sand feeding assembly includes a fixed lower sand pipe, a movable lower sand pipe, and a third electric actuator. The upper end of the fixed lower sand pipe is fixedly connected to the discharge end of the feeding valve, the outer side of the lower end of the fixed lower sand pipe is slidably connected to the movable lower sand pipe, and the movable lower sand pipe is slidably connected to the inner side of the sleeve pipe. The movable lower sand pipe is coaxially arranged with the rotary table. The third electric actuator is fixedly installed on the upper end of the upper support frame, and the output end of the third electric actuator is fixedly connected to the movable lower sand pipe. The radial transfer frame is provided with a movable groove for avoiding the movable lower sand pipe.

[0021] To better achieve the objectives of this invention, the present invention also provides a road surface texture depth inspection device, comprising the following steps:

[0022] Step 1: The mobile frame moves along the road surface to be inspected. When the mobile frame moves to the upper side of the road surface to be inspected, the lifting module drives the lower support frame to move down so that the bottom of the shielding cover is in contact with the road surface, forming a near-sealed environment on the part of the road surface to be inspected. At this time, the suction component and the rotating table are coaxially distributed.

[0023] Step 2: Move the suction tube down using the second electric actuator so that the brush structure at the lower end of the suction head contacts the road surface, and start the air pump to suction and clean the road surface;

[0024] Step 3: The rotation control component drives the rotary table to rotate. During the rotation of the rotary table, the synchronous radial transfer component will drive the radial transfer frame to slide synchronously along the radial direction of the rotary table under the limiting action of the radial groove, so that the suction head moves from the inside to the outside along the spiral trajectory, and performs fine suction cleaning work on each point of the road surface to be inspected.

[0025] Step 4: As the suction head gradually moves towards the outer periphery of the area to be tested, the third electric actuator drives the movable sand-dropping pipe to move down through the radial transfer frame and close to the road surface. The discharge valve is activated to discharge fine sand from the storage bin, allowing the fine sand to pass through the fixed sand-dropping pipe and the movable sand-dropping pipe and fall onto the road surface, thus realizing the automatic discharge of fine sand. After the discharge is completed, the movable sand-dropping pipe moves up to reset.

[0026] Step 5: When the radial transfer frame moves to the point where the sand pushing assembly is coaxial with the rotary table, the air pump stops running and ceases suction.

[0027] Step Six: The floating push component moves the leveling block down to fit the road surface, and the rotation control component drives the rotary table to rotate in the opposite direction, which in turn causes the radial transfer frame to slide in the opposite direction of the radial direction of the rotary table, so that the working end of the suction component moves from the inside to the outside along the spiral trajectory, gradually spreading the fine sand into a round shape.

[0028] Step 7: When the suction head is reset to be coaxial with the rotating platform, the rotation control component stops operating. The camera module takes a picture of the circle formed by the fine sand and calculates the construction depth of the road surface by the ratio of the volume of the fine sand to the area of ​​the circle.

[0029] Compared with the prior art, the beneficial effects of this invention are as follows: 1. By driving the working ends of the sand pushing component and the suction component to move sequentially from the inside to the outside along the spiral trajectory, the road surface is cleaned by fine suction and the sand spreading action is performed in a standardized manner. This can avoid the dust and impurities in the gaps of the road surface structure from affecting the subsequent spreading of fine sand, and realize the automated and continuous detection of the road surface structure depth.

[0030] 2. The second electric actuator drives the suction pipe downward, so that the brush structure at the lower end of the suction head contacts the road surface. The air pump is started, and the airflow will flow sequentially along the suction head, suction pipe, inner air pipe, outer air pipe, sleeve pipe and rotary joint, and finally be discharged through the air pump, realizing the fixed-point suction cleaning of the road surface. The extension and contraction of the outer air pipe and inner air pipe, as well as the rotation of the sleeve pipe and rotary joint, prevent the pipe entanglement when the radial transfer frame moves relative to the rotating platform and the rotating platform moves relative to the upper support frame.

[0031] 3. When the movable slot of the radial transfer frame moves to the lower side of the movable sand discharge pipe, the third electric actuator drives the movable sand discharge pipe to move down through the radial transfer frame and close to the road surface. The discharge valve is activated to discharge fine sand from the storage bin, so that the fine sand passes through the fixed sand discharge pipe and the movable sand discharge pipe and falls onto the road surface, thus realizing the automatic discharge of fine sand. After the discharge is completed, the third electric actuator drives the movable sand discharge pipe to move up and reset, so as to avoid interfering with the normal movement of the radial transfer frame. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0033] Figure 1 This invention provides a three-dimensional road surface structure depth inspection device. Figure 1 ;

[0034] Figure 2 This is a front view of a road surface texture depth inspection device according to the present invention;

[0035] Figure 3 This invention provides a three-dimensional road surface structure depth inspection device. Figure 2 ;

[0036] Figure 4 The three-dimensional hidden mobile frame and lifting module of the present invention Figure 1 ;

[0037] Figure 5 for Figure 4 Enlarged view in the middle;

[0038] Figure 6 The three-dimensional hidden mobile frame and lifting module of the present invention Figure 2 ;

[0039] Figure 7 The three-dimensional representation of the dual-station spiral trajectory cleaning and leveling mechanism of the present invention Figure 1 ;

[0040] Figure 8 The three-dimensional representation of the dual-station spiral trajectory cleaning and leveling mechanism of the present invention Figure 2 ;

[0041] Figure 9 The three-dimensional representation of the dual-station spiral trajectory cleaning and leveling mechanism of the present invention Figure 3 .

[0042] The labels in the diagram represent:

[0043] 1. Mobile frame; 2. Lifting module; 3. Upper support frame; 4. Lower support frame; 5. Shielding cover; 6. Dual-station spiral trajectory cleaning and leveling mechanism; 61. Rotary table; 62. Radial transfer frame; 63. Rotation control component; 631. Driven gear ring; 632. Drive gear; 633. Motor; 64. Synchronous radial transfer component; 641. Drive bevel gear; 642. Driven bevel gear; 643. Lead screw; 644. Fixed frame; 65. Sand pushing component; 651. Driven gear; 652. Drive rack; 653. 654. Slide rod; 655. Flattening block; 656. Connecting block; 657. Spring; 658. First electric actuator; 66. Suction assembly; 669. Suction pipe; 660. Suction head; 661. Second electric actuator; 662. External air pipe; 663. Internal air pipe; 664. Sleeve pipe; 665. Rotary joint; 666. Air pump; 7. Automatic sand feeding mechanism; 71. Storage bin; 72. Discharge valve; 73. Fixed sand discharge pipe; 74. Movable sand discharge pipe; 75. Third electric actuator; 76. Movable groove; 8. Camera module. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0045] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0046] In some embodiments, please refer to the accompanying drawings. Figures 1-9 A road surface structure depth inspection device, comprising a mobile frame 1;

[0047] The upper end of the mobile frame 1 is fixedly installed with a lifting module 2, the moving end of the lifting module 2 is fixedly installed with a lower support frame 4, the upper end of the lower support frame 4 is fixedly installed with an upper support frame 3, and the lower end of the lower support frame 4 is fixedly installed with a shield 5.

[0048] The lower support frame 4 is equipped with a dual-station spiral trajectory cleaning and leveling mechanism 6. The dual-station spiral trajectory cleaning and leveling mechanism 6 includes a rotary table 61, a radial transfer frame 62, a rotation control component 63, a synchronous radial transfer component 64, a sand pushing component 65, and a suction component 66. The rotary table 61 is rotatably connected to the lower support frame 4 via bearings. The rotation control component 63 is installed on the upper support frame 3, and its output end is driven to the rotary table 61. A radial groove is formed on the rotary table 61 along its radial direction. The radial transfer frame 62 is slidably connected within the radial groove. The synchronous radial transfer component 64 is installed on the rotary table 61, and its output end is driven to the radial transfer frame 62. The sand pushing component 65 and the suction component 66 are respectively installed at both ends of the lower side of the radial transfer frame 62. Multiple camera modules 8 are installed at the lower end of the rotary table 61 for photographing the spread sand.

[0049] An automatic sand feeding mechanism 7 is installed on the upper support frame 3, and the discharge end of the automatic sand feeding mechanism 7 is coaxially arranged with the rotary table 61.

[0050] In some embodiments, the lifting module 2 consists of a plurality of servo electric actuators fixedly installed on the mobile frame 1 and symmetrically distributed on both sides of the upper support frame 3.

[0051] In this invention, the mobile frame 1 moves along the road surface to be tested. When the mobile frame 1 moves to the upper side of the road surface to be tested, the lifting module 2 drives the lower support frame 4 to move vertically downward until the bottom of the shield 5 is in contact with the road surface, forming an almost sealed environment on the part of the road surface to be tested. At this time, the suction component 66 and the rotating table 61 are coaxially distributed.

[0052] The suction component 66 is activated to suction the road surface, removing dust and impurities from the road surface gaps. The rotation control component 63 is activated to drive the rotating table 61 to rotate. During the rotation of the rotating table 61, the synchronous radial transfer component 64 will drive the radial transfer frame 62 to slide synchronously along the radial direction of the rotating table 61 under the limiting action of the radial groove. This causes the working end of the suction component 66 to move from the inside to the outside along a spiral trajectory, performing fine suction and cleaning work on each point of the road surface to be inspected, and preventing dust and impurities in the road surface gaps from affecting the subsequent paving of fine sand.

[0053] During the movement of the radial transfer frame 62, the suction component 66 gradually moves towards the outer periphery of the part to be tested. At this time, the automatic sand supply mechanism 7 moves vertically downward through the radial transfer frame 62 to supply fine sand to the road surface. Then, the automatic sand supply mechanism 7 moves upward to reset, so as to avoid blocking the movement of the radial transfer frame 62.

[0054] When the radial transfer frame 62 moves to make the sand pushing component 65 coaxial with the rotating platform 61, the suction component 66 stops working. At this time, the sand pushing component 65 moves down so that its working end is in contact with the road surface. The rotation control component 63 drives the rotating platform 61 to rotate in the opposite direction, which in turn makes the radial transfer frame 62 slide in the opposite direction of the radial direction of the rotating platform 61. This causes the working end of the suction component 66 to move from the inside to the outside along a spiral trajectory, gradually spreading the fine sand into a circle and ensuring the standardization of the spreading action. This ensures that all the fine sand is filled into the gaps in the road surface. Finally, when the suction component 66 returns to its coaxial position with the rotating platform 61, the rotation control component 63 stops operating. The camera module 8 takes a picture of the circle formed by the fine sand and calculates the construction depth of the road surface by the ratio of the volume of the fine sand to the area of ​​the circle.

[0055] Subsequently, the lifting module 2 drives the lower support frame 4 to move upward and reset, so that the mobile frame 1 moves to the next part of the road surface to be inspected, realizing automated and continuous inspection of the road surface structure. Through the fine suction cleaning of the road surface and the standardized sand spreading action, the accuracy of the inspection results is significantly improved.

[0056] The rotation control assembly 63 includes a driven gear ring 631, a drive gear 632, and a motor 633. The motor 633 is fixedly connected to the upper support frame 3, and the drive gear 632 is rotatably mounted on the lower end of the lower support frame 4. The output end of the motor 633 is fixedly connected to the drive gear 632. The driven gear ring 631 is fixedly mounted on the outer edge of the lower side of the rotary table 61, and the driven gear ring 631 is meshed with the drive gear 632.

[0057] The synchronous radial displacement assembly 64 includes a driving bevel gear 641, a driven bevel gear 642, a lead screw 643, and a fixed frame 644. The fixed frame 644 is fixedly installed on the upper end of the rotary table 61. The lead screw 643 is rotatably connected to the fixed frame 644 through a bearing, and the lead screw 643 is threadedly connected to the radial displacement frame 62 through a threaded sleeve. The driving bevel gear 641 is fixedly installed on the upper end of the lower support frame 4 and located on the outer edge of the rotary table 61. The driven bevel gear 642 is fixedly connected to the end of the lead screw 643 away from the rotation center of the rotary table 61. The driving bevel gear 641 and the driven bevel gear 642 are meshed together.

[0058] The sand-pushing assembly 65 includes a slide rod 653, a leveling block 654, a floating push assembly, and a synchronous rotation assembly. The upper end of the slide rod 653 is rotatably connected to one side of the radial transfer frame 62 via a bearing. The synchronous rotation assembly is installed between the lower end of the rotary table 61 and the slide rod 653, and is used to drive the slide rod 653 to rotate when the radial transfer frame 62 slides in the radial groove. The floating push assembly is installed at the lower end of the radial transfer frame 62, the leveling block 654 is connected to the lower end of the slide rod 653, and the output end of the floating push assembly is connected to the leveling block 654.

[0059] In this embodiment, the pitch of the spiral trajectory of the leveling block 654 when it moves is one-third of the diameter of the leveling block 654, so that the leveling block 654 will repeatedly push the fine sand it passes through when it moves in a spiral, thereby achieving uniform spreading of the fine sand.

[0060] The synchronous rotation assembly includes a driven gear 651 and a drive rack 652. The driven gear 651 is fixedly connected to the outer wall of the slide bar 653, and the drive rack 652 is fixedly installed at the lower end of the rotary table 61 and is arranged parallel to the radial groove. The driven gear 651 and the drive rack 652 are meshed together.

[0061] The floating push assembly includes a connecting block 655, a spring 656, and a first electric push rod 657. The flattening block 654 is connected to the slide rod 653 via a key, and the connecting block 655 is also connected to the slide rod 653 via a key, so that the flattening block 654 and the connecting block 655 can rotate synchronously with the slide rod 653 and slide along the axial direction of the slide rod 653, and the connecting block 655 is located on the upper side of the flattening block 654; the spring 656 is sleeved on the outside of the slide rod 653, and the two ends of the spring 656 are fixedly connected to the connecting block 655 and the flattening block 654 respectively; the first electric push rod 657 is fixedly installed at the lower end of the radial transfer frame 62, and the output end of the first electric push rod 657 is rotatably connected to the connecting block 655.

[0062] The suction assembly 66 includes a suction pipe 661, a suction head 662, a second electric push rod 663, and an anti-tangling suction assembly. The upper end of the suction pipe 661 is slidably connected to the side of the radial transfer frame 62 away from the slide rod 653, and the lower end of the suction pipe 661 is fixedly connected to the suction head 662. The lower outer edge of the suction head 662 is evenly distributed with bristles, which can increase the cleaning effect on the road surface. The second electric push rod 663 is fixedly installed at the lower end of the radial transfer frame 62, and the output end of the second electric push rod 663 is fixedly connected to the suction pipe 661. The anti-tangling suction assembly is installed on the upper support frame 3 and is connected to the lower support frame 4. The suction end of the anti-tangling suction assembly is connected to the upper end of the suction pipe 661.

[0063] The anti-tangling suction assembly includes a self-organizing pipe assembly, a sleeve 666, a rotary joint 667, and an air pump 668. The rotary joint 667 is fixedly connected to the upper support frame 3. The sleeve 666 is installed at the lower end of the rotary joint 667 and is coaxially arranged with the rotary table 61. The air pump 668 is fixedly installed at the upper end of the upper support frame 3. The air inlet end of the air pump 668 is connected to the sleeve 666 through a pipe. The self-organizing pipe assembly is installed at the upper end of the rotary table 61. The two ends of the self-organizing pipe assembly are respectively connected to the upper end of the suction pipe 661 and the sleeve 666.

[0064] The self-organizing pipeline assembly includes an outer air pipe 664 and an inner air pipe 665. The inner air pipe 665 is fixedly installed on the upper end of the radial transfer frame 62, and the outer air pipe 664 is fixedly installed on the upper end of the rotating table 61. The inner air pipe 665 and the outer air pipe 664 are slidably connected with a clearance fit. The end of the outer air pipe 664 away from the inner air pipe 665 is connected to the upper end of the suction pipe 661 through a pipe, and the end of the inner air pipe 665 away from the outer air pipe 664 is connected to the sleeve pipe 666 through a pipe.

[0065] In some embodiments, the self-organizing tubing assembly employs a hose mechanism secured by a drag chain structure.

[0066] In this invention, the motor 633 drives the drive gear 632 to rotate, causing the rotary table 61 to rotate under the cooperation of the driven gear ring 631 and the drive gear 632. During the rotation of the rotary table 61, the drive bevel gear 641 and the driven bevel gear 642 cooperate to drive the lead screw 643 to rotate, causing the radial transfer frame 62 to move radially along the rotary table 61 under the limiting action of the radial groove.

[0067] The second electric actuator 663 drives the suction pipe 661 to move downward, so that the brush structure at the lower end of the suction head 662 comes into contact with the road surface. The air pump 668 is started, and the airflow will flow sequentially along the suction head 662, suction pipe 661, inner air pipe 665, outer air pipe 664, sleeve pipe 666 and rotary joint 667, and finally be discharged through the air pump 668, realizing the fixed-point suction and cleaning of the road surface. The extension and retraction of the outer air pipe 664 and inner air pipe 665 and the rotation of the sleeve pipe 666 and rotary joint 667 prevent the pipes from getting tangled when the radial transfer frame 62 moves relative to the rotating table 61 and the rotating table 61 moves relative to the upper support frame 3.

[0068] The first electric actuator 657 drives the connecting block 655 to move downward, so that the leveling block 654 fits against the road surface under the action of the spring 656, and performs the leveling operation on the fine sand. When the radial transfer frame 62 slides in the radial groove, the driven gear 651 and the drive rack 652 cooperate to make the slide rod 653 rotate, thereby making the leveling block 654 continuously rotate during the leveling operation, reducing the probability of the leveling block 654 getting stuck with the road surface, and further improving the uniformity of the leveling block 654 in spreading the fine sand.

[0069] The automatic sand feeding mechanism 7 includes a storage bin 71, a discharge valve 72, and a telescopic sand feeding assembly. The storage bin 71 is fixedly installed on the upper end of the upper support frame 3. The discharge end of the storage bin 71 is fixedly installed with the discharge valve 72, and the discharge end of the discharge valve 72 is installed with the telescopic sand feeding assembly.

[0070] The telescopic sand feeding assembly includes a fixed sand supply pipe 73, a movable sand supply pipe 74, and a third electric actuator 75. The upper end of the fixed sand supply pipe 73 is fixedly connected to the discharge end of the discharge valve 72, the outer side of the lower end of the fixed sand supply pipe 73 is slidably connected to the movable sand supply pipe 74, and the movable sand supply pipe 74 is slidably connected to the inner side of the sleeve pipe 666. The movable sand supply pipe 74 is coaxially arranged with the rotary table 61. The third electric actuator 75 is fixedly installed on the upper end of the upper support frame 3, and the output end of the third electric actuator 75 is fixedly connected to the movable sand supply pipe 74. The radial transfer frame 62 is provided with a movable groove 76 for avoiding the movable sand supply pipe 74.

[0071] In this invention, the suction head 662 suctions and cleans the road surface. When the movable slot 76 of the radial transfer frame 62 moves to the lower side of the movable sand-dropping pipe 74, the third electric actuator 75 drives the movable sand-dropping pipe 74 to move down through the radial transfer frame 62 and close to the road surface. The discharge valve 72 is activated to discharge fine sand from the storage bin 71, so that the fine sand passes through the fixed sand-dropping pipe 73 and the movable sand-dropping pipe 74 and falls onto the road surface, thus realizing the automatic discharge of fine sand. After the discharge is completed, the third electric actuator 75 drives the movable sand-dropping pipe 74 to move up and reset, so as to avoid interfering with the normal movement of the radial transfer frame 62.

[0072] In some embodiments, such as Figures 1-9 As shown, in a preferred embodiment of the present invention, a detection method for a road surface texture depth inspection device includes the following steps:

[0073] Step 1: The mobile frame 1 moves along the road surface to be inspected. When the mobile frame 1 moves to the upper side of the road surface to be inspected, the lifting module 2 drives the lower support frame 4 to move down so that the bottom of the shield 5 is in contact with the road surface, forming a near-sealed environment on the part of the road surface to be inspected. At this time, the suction component 66 and the rotating table 61 are coaxially distributed.

[0074] Step 2: The second electric actuator 663 drives the suction pipe 661 to move down, so that the brush structure at the lower end of the suction head 662 comes into contact with the road surface, and the air pump 668 is started to suction and clean the road surface.

[0075] Step 3: The rotation control component 63 drives the rotating table 61 to rotate. During the rotation of the rotating table 61, the synchronous radial transfer component 64 drives the radial transfer frame 62 to slide synchronously along the radial direction of the rotating table 61 under the limiting action of the radial groove, so that the suction head 662 moves from the inside to the outside along the spiral trajectory, and performs fine suction cleaning work on each point of the road surface to be inspected.

[0076] Step 4: As the suction head 662 gradually moves towards the outer periphery of the area to be tested, the third electric actuator 75 drives the movable sand discharge pipe 74 to move down through the radial transfer frame 62 and close to the road surface. The discharge valve 72 is activated to discharge fine sand from the storage bin 71, allowing the fine sand to pass through the fixed sand discharge pipe 73 and the movable sand discharge pipe 74 and fall onto the road surface, thus realizing the automatic discharge of fine sand. After the discharge is completed, the movable sand discharge pipe 74 moves up to reset.

[0077] Step 5: When the radial transfer frame 62 moves to make the sand pushing assembly 65 coaxial with the rotary table 61, the air pump 668 stops running and stops pumping.

[0078] Step 6: The floating push component moves the leveling block 654 down to fit the road surface, and the rotation control component 63 drives the rotating table 61 to rotate in the opposite direction, thereby causing the radial transfer frame 62 to slide in the opposite direction of the radial direction of the rotating table 61, so that the working end of the suction component 66 moves from the inside to the outside along the spiral trajectory, gradually spreading the fine sand into a round shape.

[0079] Step 7: When the suction head 662 is reset to be coaxial with the rotating table 61, the rotation control component 63 stops running. The camera module 8 takes a picture of the circle formed by the fine sand and calculates the construction depth of the road surface by the ratio of the volume of the fine sand to the area of ​​the circle.

[0080] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A road surface texture depth inspection device, comprising a mobile frame (1), characterized in that: The upper end of the mobile frame (1) is fixedly equipped with a lifting module (2), the moving end of the lifting module (2) is fixedly equipped with a lower support frame (4), the upper end of the lower support frame (4) is fixedly equipped with an upper support frame (3), and the lower end of the lower support frame (4) is fixedly equipped with a shield (5). The lower support frame (4) is equipped with a dual-station spiral trajectory cleaning and leveling mechanism (6). The dual-station spiral trajectory cleaning and leveling mechanism (6) includes a rotary table (61), a radial transfer frame (62), a rotation control component (63), a synchronous radial transfer component (64), a sand pushing component (65), and a suction component (66). The rotary table (61) is rotatably connected to the lower support frame (4) via bearings. The upper support frame (3) is equipped with a rotation control component (63). The output end of the rotation control component (63) is connected to the rotary table. The rotating platform (61) is driven and connected; a radial groove is provided on the rotating platform (61) along its radial direction, and a radial transfer frame (62) is slidably connected in the radial groove; a synchronous radial transfer component (64) is installed on the rotating platform (61), and the output end of the synchronous radial transfer component (64) is driven and connected to the radial transfer frame (62); a sand pushing component (65) and a suction component (66) are respectively installed at both ends of the lower side of the radial transfer frame (62); multiple camera modules (8) are installed at the lower end of the rotating platform (61) for taking pictures of the spread sand; An automatic sand feeding mechanism (7) is installed on the upper support frame (3), and the discharge end of the automatic sand feeding mechanism (7) is coaxially arranged with the rotary table (61).

2. The road surface texture depth inspection device according to claim 1, characterized in that, The synchronous radial transfer assembly (64) includes a driving bevel gear (641), a driven bevel gear (642), a lead screw (643), and a fixed frame (644). The fixed frame (644) is fixedly installed on the upper end of the rotary table (61). The lead screw (643) is rotatably connected to the fixed frame (644) through a bearing, and the lead screw (643) is threadedly connected to the radial transfer frame (62) through a threaded sleeve. The driving bevel gear (641) is fixedly installed on the upper end of the lower support frame (4) and located on the outer edge of the rotary table (61). The driven bevel gear (642) is fixedly connected to the end of the lead screw (643) away from the rotation center of the rotary table (61). The driving bevel gear (641) and the driven bevel gear (642) are meshed.

3. The road surface texture depth inspection device according to claim 2, characterized in that, The sand-pushing assembly (65) includes a slide rod (653), a flattening block (654), a floating push assembly, and a synchronous rotation assembly. The upper end of the slide rod (653) is rotatably connected to one side of the radial transfer frame (62) via a bearing. The synchronous rotation assembly is installed between the lower end of the rotary table (61) and the slide rod (653) to drive the slide rod (653) to rotate when the radial transfer frame (62) slides in the radial groove. The floating push assembly is installed at the lower end of the radial transfer frame (62), the flattening block (654) is connected to the lower end of the slide rod (653), and the output end of the floating push assembly is connected to the flattening block (654).

4. The road surface texture depth inspection device according to claim 3, characterized in that, The synchronous rotation assembly includes a driven gear (651) and a drive rack (652). The driven gear (651) is fixedly connected to the outer wall of the slide bar (653). The drive rack (652) is fixedly installed on the lower end of the rotary table (61) and is arranged parallel to the radial groove. The driven gear (651) and the drive rack (652) are meshed together.

5. The road surface texture depth inspection device according to claim 4, characterized in that, The suction assembly (66) includes a suction pipe (661), a suction head (662), a second electric actuator (663), and an anti-tangling suction assembly. The upper end of the suction pipe (661) is slidably connected to the side of the radial transfer frame (62) away from the slide bar (653), and the lower end of the suction pipe (661) is fixedly connected to the suction head (662). The lower outer edge of the suction head (662) is evenly distributed with bristles, which can increase the cleaning effect on the road surface. The second electric actuator (663) is fixedly installed at the lower end of the radial transfer frame (62), and the output end of the second electric actuator (663) is fixedly connected to the suction pipe (661). The anti-tangling suction assembly is installed on the upper support frame (3) and is connected to the lower support frame (4). The suction end of the anti-tangling suction assembly is connected to the upper end of the suction pipe (661).

6. The road surface texture depth inspection device according to claim 5, characterized in that, The anti-tangling suction assembly includes a self-organizing pipeline assembly, a sleeve (666), a rotary joint (667), and an air pump (668). The rotary joint (667) is fixedly connected to the upper support frame (3). The sleeve (666) is installed at the lower end of the rotary joint (667) and is coaxially arranged with the rotary table (61). The air pump (668) is fixedly installed at the upper end of the upper support frame (3). The air inlet end of the air pump (668) is connected to the sleeve (666) through a pipe. The self-organizing pipeline assembly is installed at the upper end of the rotary table (61). The two ends of the self-organizing pipeline assembly are respectively connected to the upper end of the suction pipe (661) and the sleeve (666).

7. The road surface texture depth inspection device according to claim 6, characterized in that, The self-organizing pipeline assembly includes an outer air pipe (664) and an inner air pipe (665). The inner air pipe (665) is fixedly installed on the upper end of the radial transfer frame (62), and the outer air pipe (664) is fixedly installed on the upper end of the rotating table (61). The inner air pipe (665) and the outer air pipe (664) are slidably connected with a clearance fit. The end of the outer air pipe (664) away from the inner air pipe (665) is connected to the upper end of the suction pipe (661) through a pipe. The end of the inner air pipe (665) away from the outer air pipe (664) is connected to the sleeve pipe (666) through a pipe.

8. The road surface texture depth inspection device according to claim 7, characterized in that, The automatic sand feeding mechanism (7) includes a storage bin (71), a discharge valve (72) and a telescopic sand feeding assembly. The storage bin (71) is fixedly installed on the upper end of the upper support frame (3). The discharge end of the storage bin (71) is fixedly installed with the discharge valve (72), and the discharge end of the discharge valve (72) is installed with the telescopic sand feeding assembly.

9. The road surface texture depth inspection device according to claim 8, characterized in that, The telescopic sand feeding assembly includes a fixed sand pipe (73), a movable sand pipe (74), and a third electric actuator (75). The upper end of the fixed sand pipe (73) is fixedly connected to the discharge end of the discharge valve (72). The outer side of the lower end of the fixed sand pipe (73) is slidably connected to the movable sand pipe (74), and the movable sand pipe (74) is slidably connected to the inner side of the sleeve pipe (666). The movable sand pipe (74) is coaxially arranged with the rotary table (61). The third electric actuator (75) is fixedly installed on the upper end of the upper support frame (3), and the output end of the third electric actuator (75) is fixedly connected to the movable sand pipe (74). The radial transfer frame (62) is provided with a movable groove (76) for avoiding the movable sand pipe (74).

10. A detection method, utilizing the road surface structure depth inspection device as described in claim 9, characterized in that, Includes the following steps: Step 1: The mobile frame (1) moves along the road surface to be tested. When the mobile frame (1) moves to the upper side of the road surface to be tested, the lifting module (2) drives the lower support frame (4) to move down so that the bottom of the shield (5) is in contact with the road surface, forming an almost sealed environment on the part of the road surface to be tested. At this time, the suction component (66) and the rotating table (61) are coaxially distributed. Step 2: The second electric push rod (663) drives the suction tube (661) to move down, so that the brush structure at the lower end of the suction head (662) comes into contact with the road surface, and the air pump (668) is started to suction and clean the road surface. Step 3: The rotation control component (63) drives the rotating table (61) to rotate. During the rotation of the rotating table (61), the synchronous radial transfer component (64) will drive the radial transfer frame (62) to slide synchronously along the radial direction of the rotating table (61) under the limiting action of the radial groove, so that the suction head (662) moves from the inside to the outside along the spiral trajectory, and performs fine suction cleaning work on each point of the road surface to be inspected. Step 4: As the suction head (662) gradually moves towards the outer periphery of the area to be tested, the third electric actuator (75) drives the movable sand-dropping pipe (74) to move down through the radial transfer frame (62) and close to the road surface. The discharge valve (72) is activated to discharge fine sand into the storage bin (71), so that the fine sand passes through the fixed sand-dropping pipe (73) and the movable sand-dropping pipe (74) and falls onto the road surface, realizing the automatic discharge of fine sand. After the discharge is completed, the movable sand-dropping pipe (74) moves up and resets. Step 5: When the radial transfer frame (62) moves to the point where the sand pushing assembly (65) and the rotary table (61) are coaxially distributed, the air pump (668) stops running and stops pumping; Step 6: The floating push component moves the leveling block (654) down to fit the road surface, and the rotation control component (63) drives the rotating table (61) to rotate in the opposite direction, thereby causing the radial transfer frame (62) to slide in the opposite direction of the radial direction of the rotating table (61), so that the working end of the suction component (66) moves from the inside to the outside along the spiral trajectory, gradually spreading the fine sand into a round shape. Step 7: When the suction head (662) is reset to be coaxial with the rotating table (61), the rotation control component (63) stops running and the camera module (8) takes pictures of the circle formed by the fine sand. The construction depth of the road surface is calculated by the ratio of the volume of the fine sand to the area of ​​the circle.

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