Pavement flatness detection device

Abstract

The utility model relates to the technical field of flatness detection, and discloses a pavement flatness detection device, which comprises a girder I and a girder II, wheel carriers are arranged on the bottom surfaces of the girder I and the girder II, shaft rings are arranged at the two ends of the bottom of each wheel carrier, and moving wheels are arranged on the outer sides of the wheel carriers at the positions of the shaft rings. The axle of the moving wheel is fixed at the position of the shaft washer through a bearing sleeve, and a plurality of digital horizontal rulers are installed on the top face of the first girder and the top face of the second girder and are horizontally, longitudinally and transversely arranged in a staggered mode. According to the flatness detection device, the digital leveling instrument is adopted as a flatness detection means, and the moving wheels continuously move on the road surface, so that the longitudinal and transverse flatness conditions of the road surface can be continuously obtained, the obtained data surface is expanded, meanwhile, the four wheels are matched with the digital leveling instrument, the coverage surface of one-time detection on the road surface is increased, and the detection accuracy is improved. And when a relatively wide road surface is detected, the detection times can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of flatness detection, in particular to a road surface flatness detection device. Background Technique

[0002] The detection of road surface flatness is an important link in road engineering quality control and maintenance management, which is directly related to the comfort, safety of driving and the durability of the road surface. The main purpose of road surface flatness detection is to evaluate the flatness of the road surface and ensure that it is within the specified standard range, so as to improve the safety and comfort of driving, and at the same time reduce road surface damage and vehicle wear.

[0003] At present, the road surface flatness detection methods are divided into direct test methods and indirect test methods. The direct test methods are further divided into longitudinal section measurement and three-meter straightedge method, while the indirect test methods are divided into vehicle response measurement and multi-wheel trolley type flatness meter. The working principle of the multi-wheel trolley type flatness meter is similar to the traditional three-meter straightedge method, except that mechanization replaces manual operation. During the measurement process, the detection wheel of the flatness meter moves up and down along with the longitudinal section curve of the road surface for detection. This single-wheel one-time detection can only obtain the road surface flatness situation in the longitudinal direction of the road, that is, parallel to the driving direction, and cannot synchronously detect the road surface slope. At the same time, the contact surface of the detection wheel is limited, and a single detection cannot cover a larger road surface width. For wider road surfaces, multiple detections are required. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides a road surface flatness detection device to solve the problems in the background technique.

[0006] (2) Technical Solutions

[0007] To solve the above problems, the utility model provides the following technical solutions:

[0008] A road surface flatness detection device includes a first girder and a second girder. Wheel frames are installed on the bottom surfaces of the first girder and the second girder. Axle rings are provided at both ends of the bottom of the wheel frame. Movable wheels are installed on the outer sides of the wheel frames at the positions of the axle rings. The wheel axles of the movable wheels are sleeved on the axle rings through bearings and fixed. A plurality of digital level gauges are installed on the top surfaces of the first girder and the second girder, and the plurality of digital level gauges are arranged horizontally and longitudinally and transversely staggered.

[0009] Preferably, a motor is installed on the inner side edge of the wheel frame at the position of the axle ring, and the machine shaft of the motor is in transmission connection with the wheel axle of the movable wheel through a key-spline fit.

[0010] Preferably, a first bracket and a second bracket are installed on the first girder. A control host is installed on the top surface of the first bracket, and a remote control antenna is installed on the control host. A battery pack is installed on the top surface of the second bracket. The battery pack, the motor and the control host are connected in series. The control host communicates wirelessly with the remote controller through the remote control antenna.

[0011] Preferably, a first sleeve beam and a second sleeve beam are respectively installed on the opposite sides of the first girder and the second girder. Both the first sleeve beam and the second sleeve beam are hollow. A cross beam is provided between the first sleeve beam and the second sleeve beam. Both ends of the cross beam extend into the first sleeve beam and the second sleeve beam at corresponding positions to form a socket support.

[0012] Preferably, bolts are inserted into both the first sleeve beam and the second sleeve beam. A plurality of adjusting holes at equal intervals are preset on the cross beam. The bolts extend into the adjusting holes at corresponding positions to form limit fixation between the cross beam and the first sleeve beam and the second sleeve beam.

[0013] Preferably, laser rangefinders are installed at the positions near the front and rear ends on the outer sides of the first girder and the second girder. The laser rangefinders are connected in series with the battery pack and the control host.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present utility model provides a road surface flatness detection device, which has the following beneficial effects:

[0016] 1. For this flatness detection device, by using a digital level as the flatness detection means and continuously moving the moving wheels on the road surface, the longitudinal and transverse flatness conditions of the road surface can be continuously obtained, the data acquisition range is expanded. At the same time, the combination of four wheels and the digital level increases the coverage of the road surface in one detection. When detecting a wider road surface, the detection times can be reduced.

[0017] 2. For this flatness detection device, by configuring a motor for the moving wheels and arranging matching power supply and control facilities on the girder, it can control its own movement during movement and does not require the traction of an existing vehicle.

[0018] 3. For this flatness detection device, by setting the distance between the two girders to be adjustable, the distance can be adjusted according to the road width, so that it can be adjusted to the required one-time detection coverage width as needed.

[0019] 4. For this flatness detection device, by adding laser rangefinders to measure the distance to the curbstone, when detecting at a curved road position, it can greatly ensure that the traveling route of the curve is in better concentricity with the curve, and reduce the influence of the lateral slope of the curve on the detection of longitudinal flatness. Description of the drawings

[0020] Figure 1This is the external view of the present utility model;

[0021] Figure 2 This is the bottom view of the present utility model;

[0022] Figure 3 This is the installation schematic diagram of the wheel bracket in the present utility model;

[0023] Figure 4 This is the installation schematic diagram of the cross beam in the present utility model.

[0024] In the figure: 1, the first main beam; 2, the second main beam; 3, the wheel bracket; 4, the moving wheel; 5, the motor; 6, the first bracket; 7, the second bracket; 8, the battery pack; 9, the control host; 10, the remote control antenna; 11, the digital level; 12, the remote controller; 13, the first sleeve beam; 14, the second sleeve beam; 15, the cross beam; 16, the bolt; 17, the adjustment hole; 18, the laser rangefinder; 19, the shaft ring. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0026] Please refer to Figures 1-4 , a road surface flatness detection device, including the first main beam 1 and the second main beam 2. The bottom surfaces of the first main beam 1 and the second main beam 2 are both bolted with wheel brackets 3. At both ends of the bottom of the wheel bracket 3, shaft rings 19 are preset. On the outer side of the wheel bracket 3 at the position of the shaft ring 19, moving wheels 4 are installed. The wheel axle of the moving wheel 4 is sleeved through a bearing at the position of the shaft ring 19 and fixed. On the inner side edge of the wheel bracket 3 at the position of the shaft ring 19, a motor 5 is bolted. The machine shaft of the motor 5 and the wheel axle of the moving wheel 4 are connected by key transmission through a pin;

[0027] On the first main beam 1, the first bracket 6 and the second bracket 7 are welded and installed. On the top surface of the first bracket 6, a control host 9 is installed. On the control host 9, a remote control antenna 10 is installed. On the top surface of the second bracket 7, a battery pack 8 is installed. The battery pack 8, the motor 5 and the control host 9 are connected in series. The control host 9 communicates wirelessly with the remote controller 12 through the remote control antenna 10. On the top surfaces of the first main beam 1 and the second main beam 2, a plurality of digital levels 11 are installed. The plurality of digital levels 11 are horizontally longitudinally and horizontally staggered. The digital level 11 is synchronously electrically connected to the control host 9 through a data line.

[0028] When in use, it can be controlled to move in a wireless remote control manner through the remote controller 12. The remote control signal of the remote controller 12 is received by the remote control antenna 10 and executed by the control host 9. First, it controls each motor 5 to work synchronously to drive all the moving wheels 4 to rotate for uniform forward movement. Under a straight road section, no steering is required, and it maintains a straight and uniform driving state. Under a curved road section, it controls to turn, and each motor 5 changes the output power to achieve the steering effect through differential steering. When moving, the digital spirit levels 11 on the beam one 1 and the beam two 2 can always detect the longitudinal or transverse level conditions of the beam one 1 and the beam two 2. While directly displaying the values, the values are also input into the control host 9 through the data line. Since the beam one 1 and the beam two 2 are fixed to the wheel frame 3, and each moving wheel 4 is also fixed to the corresponding wheel frame 3, therefore, when the moving wheels 4 are in contact with the ground, the level reading value of the digital spirit level 11 is the actual ground level condition. As the moving wheels 4 continue to move, the digital spirit level 11 obtains continuously fluctuating linear data. By comparing the data before and after, the road surface flatness condition can be judged. If the rear section is lower than the front section, it indicates subsidence. If the rear section is higher than the front section, it indicates uplift. The reading of the digital spirit level 11 parallel to the forward direction represents the longitudinal flatness of the road surface, and the reading of the digital spirit level 11 perpendicular to the forward direction represents the transverse flatness of the road surface.

[0029] In this embodiment, a sleeve beam one 13 and a sleeve beam two 14 are respectively bolted to the opposite sides of the beam one 1 and the beam two 2. The sleeve beam one 13 and the sleeve beam two 14 are both hollow. A cross beam 15 is provided between the sleeve beam one 13 and the sleeve beam two 14. Both ends of the cross beam 15 extend into the sleeve beam one 13 and the sleeve beam two 14 at the corresponding positions to form a socket support. Bolts 16 are inserted into both the sleeve beam one 13 and the sleeve beam two 14. A plurality of equally spaced adjustment holes 17 are preset on the cross beam 15. The bolts 16 extend into the adjustment holes 17 at the corresponding positions to form a limit fixation between the cross beam 15 and the sleeve beam one 13 and the sleeve beam two 14.

[0030] An adjustable-spacing movable fixation is formed between the first girder 1 and the second girder 2 through the first sleeve beam 13, the second sleeve beam 14 and the cross beam 15. Before the detection, the distance between the first girder 1 and the second girder 2 can be adjusted according to the road surface width, so as to obtain different road surface coverage widths. For example, under a single-lane or double-lane road surface, the distance between the first girder 1 and the second girder 2 can be reduced to the shortest or appropriately widened. Under a three-lane or four-lane road surface, the distance between the first girder 1 and the second girder 2 is further widened or pulled to the maximum. For a road surface with more lanes, widening the distance can cover a wider road surface. And a wider road surface means that during asphalt paving, the front and rear overlapping vibration compaction of the roller is carried out. Due to the different vibration compaction heights between the front and rear rollers and considering the lateral slope condition of the road, if both the two side moving wheels 4 are within the primary vibration compaction range of the roller, the data obtained at this time is in a relatively ideal state. Even the lateral slope of the road surface obtained at this time is lower than the predetermined value. If both the two side moving wheels 4 are not within the primary vibration compaction range of the roller, different ranges mean possible different heights. At this time, the lateral slope condition of the road surface can be better reflected, reducing the influence of poor data caused by local condition limitations.

[0031] In this embodiment, laser rangefinders 18 are installed at the positions near the front and rear ends on the outer sides of the first girder 1 and the second girder 2. The laser rangefinders 18 are connected in series with the battery pack 8 and the control host 9.

[0032] In the case of a curve, especially when the road surface has not been marked yet, at this time, it is difficult for the operator to accurately grasp the curve degree of the curve by remote control. This is likely to cause the vehicle not to follow a route concentric with the curve when passing through the curve, and there may be a lateral shift in the lateral space of the road surface. At this time, the lateral slope of the road surface will contaminate the detection value of the digital level 11 for detecting the longitudinal levelness, so that the value that should be the longitudinal levelness of the road surface incorporates the lateral slope value of the road surface, resulting in inaccurate final results. By irradiating the curbstones on both sides of the driving lane with the laser rangefinders 18 and obtaining the distance from the curbstones through laser reflection, controlling the distance can ensure that when traveling through the curve, a traveling route with a higher concentricity with the curve can be maintained, thereby reducing the influence of mutual contamination of the longitudinal and lateral flatness data of the road surface.

Claims

1. A road surface flatness detection device, comprising a first beam (1) and a second beam (2), characterized in that: The bottom surfaces of the first beam (1) and the second beam (2) are both equipped with wheel frames (3), and shaft rings (19) are provided at both ends of the bottom of the wheel frames (3). A moving wheel (4) is installed outside the wheel frames (3) at the position of the shaft ring (19), and the wheel axle of the moving wheel (4) is fixed at the position of the shaft ring (19) through a bearing sleeve. The top surfaces of the first beam (1) and the second beam (2) are both equipped with a plurality of digital level rulers (11), and the plurality of digital level rulers (11) are staggered in the horizontal longitudinal direction and the horizontal direction.

2. A road surface flatness detection device according to claim 1, characterized in that: A motor (5) is installed on the inner side of the wheel frame (3) at the position of the shaft ring (19), and the shaft of the motor (5) is connected to the shaft of the moving wheel (4) through a pin-key matching transmission.

3. A road surface flatness detection device according to claim 2, characterized in that: The first beam (1) is provided with a bracket (6) and a second bracket (7), the top surface of the first bracket (6) is provided with a control host (9), the control host (9) is provided with a remote control antenna (10), the top surface of the second bracket (7) is provided with a battery pack (8), the battery pack (8), the motor (5) and the control host (9) are connected in series, and the control host (9) communicates wirelessly with a remote controller (12) via the remote control antenna (10).

4. A road surface flatness detection device according to claim 1, characterized in that: The first girder (1) and the second girder (2) are respectively provided with a sleeve beam (13) and a sleeve beam (14) on opposite sides thereof; the sleeve beam (13) and the sleeve beam (14) are both hollow; a cross beam (15) is provided between the sleeve beam (13) and the sleeve beam (14); two ends of the cross beam (15) extend into the sleeve beam (13) and the sleeve beam (14) at corresponding positions to form a sleeve support.

5. A road surface flatness detection device according to claim 4, characterized in that: The sleeve beam 1 (13) and the sleeve beam 2 (14) are both provided with a latch (16), and the cross beam (15) is provided with a plurality of equally spaced adjustment holes (17). The latch (16) extends into the adjustment holes (17) at corresponding positions to form a position-limiting fixation between the cross beam (15) and the sleeve beam 1 (13) and the sleeve beam 2 (14).

6. A road surface flatness detection device according to claim 3, characterized in that: Laser rangefinders (18) are installed at the front and rear ends of the outer side surfaces of the first beam (1) and the second beam (2), and the laser rangefinders (18) are connected in series with the battery pack (8) and the control host (9).

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