CN-121992702-A - Asphalt concrete paving flatness detection device

CN121992702ACN 121992702 ACN121992702 ACN 121992702ACN-121992702-A

Abstract

The invention relates to the technical field of asphalt pavement construction and discloses an asphalt concrete paving flatness detection device, which comprises an eight-wheel frame, wherein the bottom of the eight-wheel frame is fixedly connected with a fixed sleeve, the bottom of the eight-wheel frame is provided with a sliding sleeve, the outer wall of the sliding sleeve is in sliding connection with the inner wall of the fixed sleeve, an operator drives the eight-wheel frame to move through connecting the eight-wheel frame with a tractor, the tractor drives the eight-wheel frame to move, the rotating wheel rotates to drive a convex ring to rotate, the convex position of the convex ring can extrude an air injection assembly, the air injection assembly extrudes air, the air generates high pressure, the air is ejected towards the front pavement of a test wheel through an air injection pipe, the pavement is cleaned, the moving path of the test wheel on the pavement is cleaned in real time, sand and dust contacted with the surface of the test wheel is reduced, the test wheel is effectively prevented from being lowered in the rotating process, and periodic false displacement signals can be generated, so that the accuracy of detection data is ensured.

Inventors

CAO WEIBIN
LI LEILEI
GUO JIAWEN
ZHANG FANGMIN
TENG LONG
YU HANZHI
KANG LUJIE
LIU RUI
LI WEIJUN
LI QIANFENG

Assignees

中铁十局集团青岛工程有限公司
中铁十局集团有限公司

Dates

Publication Date: 20260508
Application Date: 20251202

Claims (10)

1. The asphalt concrete paving flatness detection device comprises an eight-wheel frame (13), wherein a fixed sleeve (14) is fixedly connected to the bottom of the eight-wheel frame (13), a sliding sleeve (15) is arranged at the bottom of the eight-wheel frame (13), the outer wall of the sliding sleeve (15) is in sliding connection with the inner wall of the fixed sleeve (14), and a sliding support frame I (16) is in sliding connection with the inner wall of the sliding sleeve (15); the inner wall department rotation of sliding support frame one (16) is connected with test wheel (17), the inner wall department fixedly connected with linear displacement sensor (18) of sliding sleeve (15), the output bottom of linear displacement sensor (18) and the top fixed connection of sliding support frame one (16), the outer wall department fixedly connected with balancing weight (19) of sliding support frame one (16), its characterized in that still includes: The main body mechanism (1), the main body mechanism (1) is fixedly arranged at the bottom of the eight-wheel frame (13) to provide a supporting point; The cleaning mechanism (2) is fixedly arranged at the bottom of the eight-wheel frame (13) and used for cleaning the road surface; The stabilizing mechanism (3) is rotatably arranged at the inner wall of the sliding sleeve (15) and is used for supporting the sliding sleeve (15); When the asphalt pavement is detected for a long distance, the eight-wheel frame (13) is connected with the tractor, the test wheel (17) is in contact with the pavement, the eight-wheel frame (13) and the test wheel (17) are driven to move on the pavement through the tractor, the test wheel (17) moves up and down along with the fluctuation of the pavement, the linear displacement sensor (18) is moved, and the flatness of the pavement is measured.
2. The asphalt concrete paving smoothness detection apparatus according to claim 1, wherein said main body mechanism (1) comprises: the telescopic assembly (11) is fixedly arranged at the bottom of the eight-wheel frame (13); the rotating assembly (12) is rotatably arranged at the inner wall of the telescopic assembly (11); the rotating assembly (12) slides in the telescopic assembly (11) to enable the rotating assembly (12) to be in contact with the ground, and when the eight-wheel frame (13) moves, the rotating assembly (12) can be enabled to rotate under the influence of friction force with the ground.
3. The asphalt concrete paving smoothness detection apparatus according to claim 1, wherein the cleaning mechanism (2) comprises: the air injection assembly (21) is fixedly arranged at the bottom of the eight-wheel frame (13) through a fixing piece; the fixing piece comprises an air pressure frame (211) fixedly connected to the bottom of the eight-wheel frame (13), and a piston plate (212) is connected to the inner wall of the air pressure frame (211) in a sliding manner; the cleaning assembly (22) is fixedly arranged at the inner wall of the air injection assembly (21); Wherein, jet the gas to the road surface through jet module (21), clean the sand and dust on road surface, clean the sand and dust on rotating assembly (12) surface through cleaning assembly (22).
4. The asphalt concrete paving smoothness detection apparatus according to claim 1, wherein the stabilizing mechanism (3) comprises: The buffer component (31) is fixedly arranged at the bottom of the air pressure frame (211) through a connecting piece; The connecting piece comprises an air pressure sleeve (311) fixedly connected to the bottom of the air pressure frame (211), and a piston rod (312) is connected to the inner wall of the air pressure sleeve (311) in a sliding manner; The support assembly (32) is rotatably arranged at the inner wall of the sliding sleeve (15) through a rotating piece; The rotating piece comprises a rotating disc (321) which is rotatably connected to the inner wall of the sliding sleeve (15), and a stop block (327) is fixedly connected to the top of the sliding sleeve (15); the vibration transmitted to the test wheel (17) by the eight-wheel frame (13) is reduced through the buffer assembly (31), and the sliding sleeve (15) is supported through the support assembly (32), so that the sliding sleeve (15) is kept stable.
5. The asphalt concrete paving flatness detection device according to claim 2, wherein the telescopic assembly (11) comprises a connecting sleeve (111) fixedly connected to the bottom of the eight-wheel frame (13), a sliding support frame II (112) is arranged at the bottom of the eight-wheel frame (13), and the inner wall of the connecting sleeve (111) is in sliding connection with the outer wall of the sliding support frame II (112); The rotating assembly (12) comprises a rotating wheel (121) arranged at the bottom of the eight-wheel frame (13), the outer wall of the rotating wheel (121) is rotationally connected with the inner wall of the sliding support frame II (112), and a convex ring (122) is fixedly connected with the side wall of the rotating wheel (121); When the eight-wheel frame (13) runs on the road surface, the rotating wheel (121) is influenced by friction force with the road surface, and then rotates to drive the convex ring (122) to rotate.
6. The asphalt concrete paving flatness detecting device according to claim 3, wherein the air injection assembly (21) comprises a spring frame (213) fixedly connected to the side wall of the piston plate (212), wherein one side of the spring frame (213) far away from the piston plate (212) is slidably connected to the side wall of the convex ring (122), and an air injection pipe (214) is connected to the inner wall of the air pressure frame (211) in a penetrating manner; a blocking rod (215) is slidably connected to the inner wall of the air ejector tube (214), a connecting rod (216) is rotatably connected to one side, far away from the spring frame (213), of the piston plate (212), and the inner wall of the connecting rod (216) is rotatably connected with the top of the blocking rod (215); When the convex ring (122) rotates, the convex position of the convex ring (122) is contacted with the spring frame (213), so that the spring frame (213) is pushed to move, the piston plate (212) is moved, gas in the air pressure frame (211) is extruded, and finally the extruded gas is ejected through the air ejector tube (214) to clean the road surface.
7. The asphalt concrete paving flatness detection apparatus according to claim 6, wherein the cleaning assembly (22) comprises a shunt tube (221) penetrating through the inner wall of the air injection tube (214), and a scraping plate (222) is fixedly connected to the bottom of the spring frame (213); Wherein, part of the high-pressure gas entering the air jet pipe (214) can enter the shunt pipe (221) and be ejected towards the front of the convex ring (122), and meanwhile, when the spring frame (213) moves, the spring frame also drives the scraping plate (222) to move, and sand particles on the surface of the rotating wheel (121) are scraped.
8. The asphalt concrete paving flatness detecting device according to claim 4, wherein the buffer assembly (31) includes a communicating pipe (313) that is connected to an inner wall of the air pressure jacket (311) in a penetrating manner, an outer wall of the communicating pipe (313) is connected to an inner wall of the fixed jacket (14) in a penetrating manner, and a side wall of the piston rod (312) is fixedly connected to a side of the spring bracket (213) near the piston plate (212); the inner wall of the communicating pipe (313) is slidably connected with a spring ball head rod (314), and the inner wall of the fixed sleeve (14) is provided with an orifice (315); When the spring frame (213) moves, the piston rod (312) is driven to move, gas in the air pressure sleeve (311) is extruded, and the gas enters the fixed sleeve (14) through the communicating pipe (313) and the spring ball head rod (314).
9. The asphalt concrete paving flatness detecting device according to claim 4, wherein the supporting component (32) comprises a universal ball rod (324) rotatably connected to the bottom of the rotating disc (321), a spring plate (328) is fixedly connected to the top of the sliding sleeve (15), and the side wall of the spring plate (328) is fixedly connected with the side wall of the rotating disc (321) through a spring; The pneumatic ball rod is characterized in that a connecting block (323) is fixedly connected to the side wall of the pneumatic frame (211), a sliding block (325) is slidably connected to the inner wall of the connecting block (323), and the bottom of the universal ball rod (324) is rotatably connected with the inner wall of the connecting block (323).
10. The asphalt concrete paving flatness detecting device according to claim 9, wherein the support assembly (32) further comprises a fixed disc (322) fixedly connected to the side wall of the second sliding support frame (112), an arc-shaped pushing block (326) is fixedly connected to the top of the fixed disc (322), and the inner wall of the fixed disc (322) is slidably connected to the outer wall of the sliding block (325); When the rotating wheel (121) and the testing wheel (17) are in contact with the road surface, the sliding sleeve (15) descends, the rotating disc (321) can be rotated anticlockwise, the rotating disc (321) is blocked by the stop block (327) to rotate, the sliding sleeve (15) cannot descend, and the sliding sleeve (15) is supported.

Description

Asphalt concrete paving flatness detection device Technical Field The invention relates to the technical field of asphalt pavement construction equipment, in particular to an asphalt concrete paving flatness detection device. Background The road surface flatness is an important index for evaluating the use performance of the road surface, and directly affects the running quality of vehicles on the road surface and the basic functions of the expressway, the road surface unevenness is an important factor for causing random vibration of the vehicles, not only can increase tire wear and the fuel consumption of the vehicles, but also can cause premature failure caused by impact action on the road surface when serious, and a detection device is generally used for confirming the road surface flatness, wherein the detection modes comprise contact mechanical measurement, non-contact sensing measurement, integrated mark detection and the like. When the highway paved with asphalt is subjected to long-distance flatness detection, an eight-wheel flatness meter is often used, in order to ensure the detection accuracy, a detection road section is cleaned generally, but when the road is detected in a region with larger sand dust, the cleaned road surface is likely to gather more sand dust due to larger sand dust, the surface of the test wheel is likely to be attached with more sand dust in a long-distance detection process, the outer circle of the test wheel is likely to be uneven, the irregular rotation of the test wheel is caused, the road surface fluctuation is misjudged, and the accuracy of detection data is affected. Disclosure of Invention In order to solve the technical problems, the invention provides an asphalt concrete paving flatness detection device, which comprises an eight-wheel frame, wherein the bottom of the eight-wheel frame is fixedly connected with a fixed sleeve, the bottom of the eight-wheel frame is provided with a sliding sleeve, the outer wall of the sliding sleeve is in sliding connection with the inner wall of the fixed sleeve, the inner wall of the sliding sleeve is in sliding connection with a sliding support frame I, and the outer wall of the sliding sleeve is fixedly connected with a rubber sealing ring I for preventing gas leakage; the inner wall of the sliding support frame I is rotationally connected with a test wheel, the inner wall of the sliding sleeve is fixedly connected with a linear displacement sensor, the bottom of the output end of the linear displacement sensor is fixedly connected with the top of the sliding support frame I, and the outer wall of the sliding support frame I is fixedly connected with a balancing weight; the main body mechanism is fixedly arranged at the bottom of the eight-wheel frame and provides a supporting point; The cleaning mechanism is fixedly arranged at the bottom of the eight-wheel frame and used for cleaning a road surface; the stabilizing mechanism is rotatably arranged at the inner wall of the sliding sleeve and used for supporting the sliding sleeve; When the device is used, an operator needs to detect the asphalt pavement for a long distance, the eight-wheel frame is connected with the tractor by the eight-wheel frame, the eight-wheel frame is in contact with the pavement, the test wheel is in close contact with the pavement by the weight of the balancing weight, then the test wheel is calibrated, the eight-wheel frame is driven to travel on the pavement by starting the tractor after the calibration is completed, the test wheel is automatically rotated under the influence of friction force with the pavement in the pavement moving process, the test wheel ascends or descends due to fluctuation of the pavement, the first sliding support frame is driven to ascend or descend, and the output end of the linear displacement sensor is pushed to ascend or descend, so that the flatness data of the pavement are collected. Preferably, the body mechanism includes: The telescopic component is fixedly arranged at the bottom of the eight-wheel frame; The rotating assembly is rotatably arranged at the inner wall of the telescopic assembly; Wherein, through rotating the inside slip of subassembly at flexible subassembly, make rotating the subassembly and ground contact, when eight wheeler frame removes, can let rotating the subassembly receive the influence rotation with ground frictional force. Preferably, the cleaning mechanism includes: The air injection assembly is fixedly arranged at the bottom of the eight-wheel frame through a fixing piece; the fixing piece comprises an air pressure frame fixedly connected to the bottom of the eight-wheel frame, a piston plate is slidably connected to the inner wall of the air pressure frame, and a rubber strip is fixedly connected to the outer wall of the piston plate and used for fully extruding air; the cleaning component is fixedly arranged at the inner wall of the air injection component; The air jet assembly is used for