Device for testing the smoothness of asphalt concrete flexible pavement corners

Abstract

This utility model discloses a device for detecting the smoothness of corners in asphalt concrete flexible pavements, relating to the field of pavement smoothness detection technology. It includes a mobile cart with a data processing device on its top and a removal mechanism at its bottom for easy removal of the detection equipment from the bottom of the cart, facilitating detection at pavement corners. The removal mechanism includes a telescopic unit and a drive unit. The telescopic unit, located at the bottom of the mobile cart, includes a fixed base fixedly installed at the bottom of the cart. The drive unit, via a servo motor, drives a main synchronous pulley and a synchronous belt, which in turn drives a connecting rod to move a sliding frame, allowing the pavement laser smoothness detector to be removed from under the mobile cart for direct detection of pavement corners. This solves the problem of blind spots in corner detection caused by inner wheel differences in traditional equipment, ensuring comprehensive and accurate pavement smoothness assessment.

Description

Technical Field

[0001] This utility model relates to the field of road surface smoothness detection technology, specifically to a smoothness detection device for corners of asphalt concrete flexible pavements. Background Technology

[0002] Smoothness is one of the important indicators of road construction quality and service level. Uneven road surfaces will increase driving resistance and cause additional vibration to the vehicle. This vibration will cause bumpy driving, affecting driving speed and safety, driving smoothness and passenger comfort.

[0003] According to the patent titled "Road Smoothness Detection Device" (patent publication number: CN221167367U, patent publication date: 2024-06-18), it includes a frame, traveling wheels, a cleaning mechanism, a traction mechanism, and a detection mechanism. Multiple traveling wheels are mounted on the frame. The cleaning mechanism, mounted on the frame, is used to clean stones from the road surface and includes a contact plate and multiple brushes. The contact plate is located at the bottom of the frame, and multiple brushes are mounted on the frame. The traction mechanism is mounted on the frame and is used to connect to a towing vehicle. The detection mechanism, mounted on the frame, is used to detect the smoothness of the road surface. During the detection process, the contact plate pushes away stones on the frame's travel path, and the brushes remove stones from the road surface, cleaning the road surface along the detection path of the detection mechanism. This reduces the impact of stones and other debris on the detection, effectively improving the accuracy of road surface smoothness detection.

[0004] Based on the aforementioned existing technology, current devices for detecting the smoothness of asphalt concrete flexible pavement corners still have the following problems: traditional detection equipment is usually installed at the bottom of a mobile vehicle. At road corners, the turning trajectory of the mobile vehicle itself will form an inner wheel difference area. The detection equipment cannot follow the vehicle trajectory to enter the corner area inside the curve, making this area a blind spot for detection. Therefore, this utility model provides a device for detecting the smoothness of asphalt concrete flexible pavement corners. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a device for detecting the smoothness of asphalt concrete flexible pavement corners. It solves the following problems that existing devices for detecting the smoothness of asphalt concrete flexible pavement corners still have: traditional detection equipment is usually installed at the bottom of a mobile vehicle. At road corners, the turning trajectory of the mobile vehicle itself will form an inner wheel difference area. The detection equipment cannot follow the vehicle trajectory to enter the corner area inside the curve, making this area a blind spot for detection.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for detecting the smoothness of asphalt concrete flexible pavement corners, comprising a mobile cart, a data processing device mounted on the top of the mobile cart, and a removal mechanism mounted on the bottom of the mobile cart for removing the detection device from the bottom of the mobile cart, facilitating detection at pavement corners. The removal mechanism includes: The telescopic unit, located at the bottom of the mobile cart, includes a fixed base fixedly installed at the bottom of the mobile cart. Rectangular slots are provided on both the front and rear sides of the fixed base, and a sliding frame is slidably mounted on the surface of the fixed base. Several rollers are rotatably mounted in a linear array on both the front and rear sides of the sliding frame, and the rollers roll within the rectangular slots, allowing the sliding frame to slide on the surface of the fixed base. A fixed plate is fixedly installed on the left side of the bottom of the sliding frame, and a road surface laser smoothness detector is fixedly installed on the left side of the fixed plate. By sliding the sliding frame on the surface of the fixed base, the road surface laser smoothness detector can be moved out from under the mobile cart, facilitating the inspection of road corners. The drive unit is located below the telescopic unit and is used to drive the sliding of the sliding frame.

[0007] Preferably, the sliding frame has a limiting groove inside, and the bottom of the fixed seat is fixedly installed with a limiting post, which slides inside the limiting groove to limit the movement position of the sliding frame.

[0008] Preferably, the roller rolls inside the rectangular groove to reduce the friction between the sliding frame and the fixed seat.

[0009] Preferably, a mounting frame is fixedly installed at the bottom of the mobile cart, and a secondary synchronous pulley and a primary synchronous pulley are rotatably installed on the upper two sides of the mounting frame, and a synchronous belt is installed between the secondary synchronous pulley and the primary synchronous pulley.

[0010] Preferably, a servo motor is fixedly installed on the bottom right side of the mounting bracket, and the output end of the servo motor passes through the mounting bracket and is fixedly connected to the main synchronous pulley, for driving the secondary synchronous pulley, the main synchronous pulley and the synchronous belt to rotate.

[0011] Preferably, a connecting rod is fixedly installed at the right end of the sliding frame, and the lower end of the connecting rod is fixedly installed on the surface of the timing belt.

[0012] This invention provides a device for detecting the smoothness of corners in asphalt concrete flexible pavements. Compared with existing technologies, it has the following advantages: 1. This device for detecting the smoothness of asphalt concrete flexible pavement corners features a drive unit. A servo motor drives the main synchronous pulley and synchronous belt, which in turn moves the connecting rod and slides the device, allowing the laser pavement smoothness detector to move out from under the mobile cart and directly inspect the pavement corners. This solves the problem of blind spots in traditional equipment due to inner wheel differences, ensuring comprehensive and accurate pavement smoothness assessment.

[0013] 2. This device for detecting the smoothness of asphalt concrete flexible pavement corners uses limiting grooves and limiting posts to limit the movement of the sliding frame, ensuring that the pavement laser smoothness detector remains stable during the removal process; at the same time, the rolling of the rollers in the rectangular groove reduces the sliding friction, making the movement smoother. Attached Figure Description

[0014] Figure 1 This is a right bottom perspective view of the three-dimensional structure of this utility model; Figure 2 This is a three-dimensional structural view of the removal mechanism of this utility model from the upper right. Figure 3 This is a three-dimensional view of the disassembled telescopic unit of this utility model. Figure 4 This is a split top-view perspective structural diagram of the telescopic unit of this utility model; Figure 5 This is a right-side perspective view of the drive unit of this utility model.

[0015] In the diagram: 1-Mobile trolley, 2-Removal mechanism, 21-Telescopic unit, 211-Fixed seat, 212-Rectangular groove, 213-Sliding frame, 214-Fixed plate, 215-Road surface laser smoothness detector, 216-Limiting post, 217-Limiting groove, 218-Roller, 22-Drive unit, 221-Mounting frame, 222-Secondary synchronous pulley, 223-Main synchronous pulley, 224-Synchronous belt, 225-Servo motor, 226-Connecting rod, 3-Data processing device. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-5 This utility model provides a technical solution: A device for detecting the smoothness of asphalt concrete flexible pavement corners includes a mobile cart 1. A data processing device 3 is installed on the top of the mobile cart 1, and a removal mechanism 2 is installed at the bottom of the mobile cart 1 to allow the detection equipment to be removed from the bottom of the mobile cart 1 for convenient detection of pavement corners. The removal mechanism 2 includes: The telescopic unit 21 is located at the bottom of the mobile cart 1 and includes a fixed seat 211 fixedly installed at the bottom of the mobile cart 1. The fixed seat 211 has rectangular slots 212 on both the front and rear sides. A sliding frame 213 is slidably installed on the surface of the fixed seat 211. Several rollers 218 are rotatably installed in a linear array on both the front and rear sides of the sliding frame 213. The rollers 218 roll inside the rectangular slots 212, so that the sliding frame 213 slides on the surface of the fixed seat 211. A fixed plate 214 is fixedly installed on the bottom left side of the sliding frame 213. A road surface laser smoothness detector 215 is fixedly installed on the left side of the fixed plate 214. The road surface laser smoothness detector 215 is moved out from under the mobile cart 1 by sliding the sliding frame 213 on the surface of the fixed seat 211, so as to facilitate the detection of road corners. The drive unit 22 is located below the telescopic unit 21 and is used to drive the sliding frame 213 to slide.

[0018] The model of the 215 laser road surface evenness tester is LHDZ-105.

[0019] In this embodiment, a limiting groove 217 is provided inside the sliding frame 213, and a limiting post 216 is fixedly installed at the bottom of the fixed base 211. The limiting post 216 slides inside the limiting groove 217 to limit the movement position of the sliding frame 213.

[0020] By sliding the sliding frame 213 through the limiting groove 217 inside and the limiting post 216 fixed at the bottom of the fixed base 211, the movement position of the sliding frame 213 is limited, preventing the sliding frame 213 from moving excessively or deviating. This ensures that the road surface laser smoothness detector 215 always runs stably along the predetermined trajectory during the detection process, improving the accuracy of the detection and the safety of the device.

[0021] In this embodiment, the roller 218 rolls inside the rectangular groove 212, thereby reducing the friction between the sliding frame 213 and the fixed seat 211.

[0022] By having the rollers 218 roll inside the rectangular groove 212, the friction between the sliding frame 213 and the fixed seat 211 is significantly reduced, making the movement of the sliding frame 213 easier and smoother, reducing the driving force required, and reducing component wear.

[0023] In this embodiment, a mounting frame 221 is fixedly installed at the bottom of the mobile cart 1. A secondary synchronous wheel 222 and a main synchronous wheel 223 are rotatably installed on the upper two sides of the mounting frame 221, and a synchronous belt 224 is installed between the secondary synchronous wheel 222 and the main synchronous wheel 223. A servo motor 225 is fixedly installed on the bottom right side of the mounting frame 221, and the output end of the servo motor 225 passes through the mounting frame 221 and is fixedly connected to the main synchronous wheel 223, which is used to drive the secondary synchronous wheel 222, the main synchronous wheel 223 and the synchronous belt 224 to rotate. A connecting rod 226 is fixedly installed on the right end of the sliding frame 213, and the lower end of the connecting rod 226 is fixedly installed on the surface of the synchronous belt 224.

[0024] The servo motor 225, model KV3SF-8521F-WR, is electrically connected to an external power supply and is operated by a human-controlled control panel. The secondary synchronous wheel 222 and the main synchronous wheel 223 are supported by the mounting bracket 221 fixedly installed at the bottom of the mobile cart 1, and a synchronous belt 224 is installed between them. At the same time, the servo motor 225 fixedly installed on the bottom right side of the mounting bracket 221 drives the main synchronous wheel 223 to rotate, which drives the synchronous belt 224 to move. The right end of the sliding frame 213 is fixed to the surface of the synchronous belt 224 through the connecting rod 226, realizing precise driving and control of the movement of the sliding frame 213, ensuring that the road surface laser smoothness detector 215 can be moved out and retracted quickly and accurately.

[0025] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0026] During operation, the mobile cart 1 is pushed, and the road surface laser smoothness detector 215 is used to detect the smoothness of the road surface. When encountering a corner, the servo motor 225 runs and drives the main synchronous wheel 223 to rotate. The main synchronous wheel 223 drives the synchronous belt 224 to rotate through the secondary synchronous wheel 222. The synchronous belt 224 pushes the sliding frame 213 to move through the connecting rod 226. When the sliding frame 213 moves, it drives the road surface laser smoothness detector 215 to move synchronously through the fixed plate 214, so that the road surface laser smoothness detector 215 moves out of the mobile cart 1 to detect the smoothness at the corner.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the smoothness of corners in asphalt concrete flexible pavement, comprising a mobile cart (1), wherein a data processing device (3) is provided on the top of the mobile cart (1), characterized in that: The bottom of the mobile cart (1) is provided with a removal mechanism (2) for removing the detection equipment from the bottom of the mobile cart (1) to facilitate the detection of road corners. The removal mechanism (2) includes: The telescopic unit (21) is located at the bottom of the mobile cart (1), including a fixed seat (211) fixedly installed at the bottom of the mobile cart (1). The fixed seat (211) has rectangular slots (212) on both the front and rear sides. A sliding frame (213) is slidably installed on the surface of the fixed seat (211). Several rollers (218) are rotatably installed in a linear array on both the front and rear sides inside the sliding frame (213). The rollers (218) roll inside the rectangular slots (212) to realize that the sliding frame (213) slides on the surface of the fixed seat (211). A fixed plate (214) is fixedly installed on the left side of the bottom of the sliding frame (213). A road surface laser smoothness detector (215) is fixedly installed on the left side of the fixed plate (214). The road surface laser smoothness detector (215) is moved out of the mobile cart (1) by sliding the sliding frame (213) on the surface of the fixed seat (211) to facilitate the detection of road corners. The drive unit (22) is located below the telescopic unit (21) and is used to drive the sliding frame (213) to slide.

2. The device for detecting the smoothness of asphalt concrete flexible pavement corners according to claim 1, characterized in that: The sliding frame (213) has a limiting groove (217) inside, and the bottom of the fixed seat (211) is fixedly installed with a limiting post (216), and the limiting post (216) slides inside the limiting groove (217) to limit the movement position of the sliding frame (213).

3. The device for detecting the smoothness of asphalt concrete flexible pavement corners according to claim 1, characterized in that: The roller (218) rolls inside the rectangular groove (212) to reduce the friction between the sliding frame (213) and the fixed seat (211).

4. The device for detecting the smoothness of asphalt concrete flexible pavement corners according to claim 1, characterized in that: The bottom of the mobile cart (1) is fixedly installed with a mounting frame (221). The upper sides of the mounting frame (221) are respectively rotatably installed with a secondary synchronous wheel (222) and a main synchronous wheel (223), and a synchronous belt (224) is installed between the secondary synchronous wheel (222) and the main synchronous wheel (223).

5. The device for detecting the smoothness of asphalt concrete flexible pavement corners according to claim 4, characterized in that: A servo motor (225) is fixedly installed on the bottom right side of the mounting bracket (221), and the output end of the servo motor (225) passes through the mounting bracket (221) and is fixedly connected to the main synchronous pulley (223) to drive the secondary synchronous pulley (222), the main synchronous pulley (223) and the synchronous belt (224) to rotate.

6. The device for detecting the smoothness of asphalt concrete flexible pavement corners according to claim 4, characterized in that: A connecting rod (226) is fixedly installed on the right end of the sliding frame (213), and the lower end of the connecting rod (226) is fixedly installed on the surface of the timing belt (224).

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