Pavement flatness detection device table for asphalt pavement layer

Abstract

The utility model discloses a pavement flatness detection device table of an asphalt pavement layer, which comprises a movable seat, at least seven sliding cavities are arranged in the movable seat, movable detection blocks are arranged in the sliding cavities, first rollers are arranged in the movable detection blocks, and the first rollers are arranged in the movable detection blocks. Detection cavities are formed in the two sides of the sliding cavity, pressure sensors are installed at the upper ends and the lower ends of the detection cavities correspondingly, the pressure sensors and the detection cavities are fixed through screws, contact blocks are installed on the two sides of the movable detection block correspondingly, one sides of the contact blocks are welded and fixed to the movable detection block, and the other sides of the contact blocks and the detection cavities are limited in a sliding mode; a spring is installed outside the pressure sensor, and the two ends of the spring are fixed to the detection cavity and the contact block respectively, and in this way, the problems that due to the fact that different protrusions or recesses exist on the road surface on the same horizontal line, the difficulty of detection work is increased, and the detection precision is likely to be reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt pavement layer detection, in particular to a pavement flatness detection device platform for an asphalt pavement layer. Background Art

[0002] With the rapid development of transportation infrastructure, asphalt pavement has become the main choice for road construction due to its good driving performance, high durability and easy maintenance. However, with the increase of service life, the flatness problem of asphalt pavement has gradually emerged, which not only affects the driving comfort, but also may pose a potential threat to the service life and safety of the vehicle. The core purpose of flatness detection is to evaluate the surface condition of asphalt pavement, including defects such as bumps, potholes, cracks, etc. Modern flatness detection equipment and methods are gradually emerging, such as laser scanners, three-dimensional vision systems, etc. These new technologies can realize fast and accurate measurement of road morphology, greatly improving detection efficiency and accuracy.

[0003] For example, the Chinese authorized patent "A roadbed and pavement flatness detection device" with announcement number CN215252183U includes a supporting mechanism, including a fixed base and a vertical plate arranged on the top of the fixed base and integrally formed with the fixed base; a detection mechanism, including a first slide groove opened on the outer side of the vertical plate and a slider vertically sliding in the first slide groove; a displacement mechanism, including a fixed bar installed on the outer side of the fixed base and a containing box installed on the top of the fixed bar. Through the use of the detection mechanism, there is no need for workers to bend over for a long time to place a spirit level, which saves labor and increases work efficiency.

[0004] Although the above-mentioned existing technology can realize the detection of the flatness of asphalt pavement, the presence of different protrusions or depressions on the same horizontal line of the road surface increases the difficulty of the detection work, and the problem of reduced detection accuracy is prone to occur. In addition, the sand and gravel on the road surface may also cause misjudgment of the detection device. Therefore, it does not meet the existing needs. In this regard, we propose a road surface flatness detection device for asphalt pavement layers. Utility Model Content

[0005] The utility model aims to provide a road surface flatness detection device for an asphalt road surface layer, so as to solve the problem in the above-mentioned background technology that the detection work is more difficult and the detection accuracy is easily reduced due to the presence of different protrusions or depressions on the same horizontal line of the road surface.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a road surface flatness detection device platform for an asphalt pavement layer, comprising a movable seat, a sliding cavity is arranged inside the movable seat, and at least seven sliding cavities are arranged, movable detection blocks are installed inside the sliding cavities, and the movable detection blocks are limited by sliding with the movable seat, a first roller is installed inside the movable detection block, and the first roller is connected to the movable detection block through a rotating shaft, detection cavities are arranged on both sides of the sliding cavity, pressure sensors are installed at the upper and lower ends of the detection cavity, and the pressure sensors are fixed to the detection cavity by screws, contact blocks are installed on both sides of the movable detection block, one side of the contact block is welded and fixed to the movable detection block, and the other side of the contact block is limited by sliding with the detection cavity, a spring is installed outside the pressure sensor, and the two ends of the spring are respectively fixed to the detection cavity and the contact block.

[0007] Preferably, the output end of the pressure sensor is connected to a single-chip microcomputer, a warning light is installed on the rear side of the upper end surface of the movable seat, the warning light is adhered and fixed to the movable seat, and the input end of the warning light is connected to the single-chip microcomputer.

[0008] Preferably, lifting blocks are installed on both sides of the movable seat, a second roller is installed inside the lifting block, the shafts at both ends of the second roller are connected to the lifting block through a rotating shaft, and the lower end of the second roller extends to the bottom of the movable seat.

[0009] Preferably, adjustment seats are fixedly provided on both sides of the upper end surface of the movable seat, an adjusting wheel is installed above the adjusting seat, and the adjusting wheel is rotatably connected to the adjusting seat, a movable column is fixedly provided above the lifting block, and the movable column and the adjusting seat are limited by sliding, a screw is fixedly installed at the lower end of the adjusting wheel, the screw extends to the interior of the movable column, and the external thread of the screw is adapted to the internal screw hole of the movable column.

[0010] Preferably, a blowing hood is installed at the front end inside the movable seat, an air pump is fixedly installed on the front side of the upper end surface of the movable seat, an air pipe is installed at the air outlet end of the air pump, and the other end of the air pipe is connected to one side of the blowing hood.

[0011] Preferably, fixed blocks are provided on both sides of the rear end of the movable seat, and the fixed blocks are fixed to the movable seat by welding, and handles are installed above the fixed blocks.

[0012] Preferably, the warning light switches between green, yellow and red states.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model installs movable detection blocks inside the sliding cavity, and the movable detection blocks can independently detect local areas of the asphalt pavement. Before work, the height of the second roller is adjusted to make the first roller contact the ground, and at the same time, the contact blocks on both sides of the movable detection block are located in the middle position of the detection cavity under the support of the spring. At this time, the prompt light shows green, indicating that the detection operation can be carried out. The staff pushes the handle to move the movable seat on the asphalt pavement. When there is a depression in the area corresponding to the first roller, the movable detection block sinks under its own gravity, squeezing the spring to make the contact block contact the pressure sensor below. At this time, the prompt light shows red. When there is a bulge in the area corresponding to the first roller, the road surface will lift up the first roller, thereby driving the contact block to rise through the movable detection block, so that it contacts the pressure sensor above. At this time, the prompt light shows yellow. The staff can mark the area according to the color of the prompt light, so as to facilitate subsequent maintenance work. The device is easy to operate and has high flexibility, and can simultaneously deal with bulges and depressions on the road surface.

[0015] 2. The utility model is provided with an adjustment seat to ensure that when the first roller contacts the asphalt pavement, the contact block can be located at the center of the detection cavity. The staff can rotate the adjustment wheel to drive the screw to rotate. Under the friction between the external thread and the screw hole in the movable column, the movable seat guides the movable column to achieve height adjustment of the lifting block and complete the pre-positioning of the movable detection block. This structure can flexibly adjust the movable detection block according to different usage scenarios, thereby improving applicability.

[0016] 3. The utility model is provided with a blowing mechanism. When the moving seat is in operation, the air pump at the upper end is turned on to compress the incoming air, and at the same time, the high-pressure air is transported to the blowing hood through the air pipe. The blowing hood is located in front of the first roller. The ejected high-pressure air is in an inclined state, which can blow the sand and gravel remaining on the asphalt pavement out of the detection area, thereby avoiding the occurrence of detection errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a top view of the internal structure of the utility model;

[0019] Figure 3 It is a front view of the internal structure of the utility model;

[0020] Figure 4 For the utility model Figure 3 A partial enlarged view of area A.

[0021] In the figure: 1. moving seat; 2. sliding cavity; 3. movable detection block; 4. prompt light; 5. air pump; 6. air pipe; 7. adjustment seat; 8. adjustment wheel; 9. fixed block; 10. handle; 11. spray cover; 12. first roller; 13. lifting block; 14. second roller; 15. movable column; 16. screw; 17. contact block; 18. detection cavity; 19. pressure sensor; 20. spring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figure 1-4 The utility model provides an embodiment: a road surface flatness detection device platform for an asphalt pavement layer, comprising a movable seat 1, a sliding cavity 2 is arranged inside the movable seat 1, and the sliding cavity 2 is provided with at least seven, a movable detection block 3 is installed inside the sliding cavity 2, and the movable detection block 3 and the movable seat 1 are slidably limited, a first roller 12 is installed inside the movable detection block 3, and the first roller 12 and the movable detection block 3 are connected through a rotating shaft, detection cavities 18 are arranged on both sides of the sliding cavity 2, pressure sensors 19 are installed at the upper and lower ends of the detection cavity 18, and the pressure sensor 19 is fixed to the detection cavity 18 by screws, contact blocks 17 are installed on both sides of the movable detection block 3, one side of the contact block 17 is welded and fixed to the movable detection block 3, and the other side of the contact block 17 is slidably limited with the detection cavity 18, a spring 20 is installed outside the pressure sensor 19, and the two ends of the spring 20 are respectively fixed to the detection cavity 18 and the contact block 17.

[0024] When in use, the staff pushes the handle 10 to move the movable seat 1 on the asphalt road surface. When there is a depression in the area corresponding to the first roller 12, the movable detection block 3 sinks under its own gravity, squeezing the spring 20, so that the contact block 17 contacts the pressure sensor 19 below. At this time, the prompt light 4 displays red. When there is a bulge in the area corresponding to the first roller 12, the road surface will lift up the first roller 12, thereby driving the contact block 17 to rise through the movable detection block 3, so that it contacts the pressure sensor 19 above. At this time, the prompt light displays yellow, and the staff can mark the area according to the color of the prompt light 4, so as to facilitate subsequent maintenance work.

[0025] See also Figure 1 The output end of the pressure sensor 19 is connected to a single-chip microcomputer, and a warning light 4 is installed on the rear side of the upper end surface of the moving seat 1. The warning light 4 is adhered and fixed to the moving seat 1, and the input end of the warning light 4 is connected to the single-chip microcomputer. The device is easy to operate and has high flexibility. It can deal with bumps and depressions on the road surface at the same time.

[0026] See also Figure 2 A lifting block 13 is installed on both sides of the movable seat 1, and a second roller 14 is installed inside the lifting block 13. The shafts at both ends of the second roller 14 are connected to the lifting block 13 through a rotating shaft, and the lower end of the second roller 14 extends to the bottom of the movable seat 1. This structure can flexibly adjust the activity detection block according to different usage scenarios, thereby improving applicability.

[0027] See also Figure 3 , adjustment seats 7 are fixedly provided on both sides of the upper end surface of the movable seat 1, and an adjusting wheel 8 is installed above the adjusting seat 7, and the adjusting wheel 8 is rotatably connected to the adjusting seat 7, a movable column 15 is fixedly provided above the lifting block 13, and the movable column 15 and the adjusting seat 7 are limited by sliding, and a screw 16 is fixedly installed at the lower end of the adjusting wheel 8, and the screw 16 extends to the inside of the movable column 15, and the external thread of the screw 16 is matched with the internal screw hole of the movable column 15. By adjusting the height of the second roller 14, the first roller 12 is in contact with the ground, and at the same time, the contact blocks 17 on both sides of the movable detection block 3 are located in the middle position of the detection cavity 18 under the support of the spring 20. At this time, the prompt light 4 shows a green light, indicating that the detection operation can be carried out.

[0028] See also Figure 1 and Figure 2 A blowing hood 11 is installed at the front end of the movable seat 1, and an air pump 5 is fixedly installed on the front side of the upper end surface of the movable seat 1. An air pipe 6 is installed at the air outlet end of the air pump 5, and the other end of the air pipe 6 is connected to one side of the blowing hood 11, which can blow the sand and gravel remaining on the asphalt pavement out of the detection area, thereby avoiding the occurrence of detection errors.

[0029] See also Figure 1 and Figure 2 Fixed blocks 9 are provided on both sides of the rear end of the movable seat 1, and the fixed blocks 9 are welded and fixed to the movable seat 1, and handles 10 are installed above the fixed blocks 9 to facilitate the staff to push.

[0030] Further, the warning light 4 switches between green, yellow and red states.

[0031] Working principle: When in use, in order to ensure that the contact block 17 can be located at the center of the detection chamber 18 when the first roller 12 contacts the asphalt pavement, the staff can turn the adjusting wheel 8 to drive the screw 16 to rotate. Under the friction between its external thread and the inner screw hole of the movable column 15, the movable column 15 is guided by the movable seat 1 to achieve the height adjustment of the lifting block 13 and complete the pre-positioning of the movable detection block 3. During the operation of the movable seat 1, the air pump 5 at the upper end is turned on to compress the incoming air, and at the same time, the high-pressure air is transported to the spray hood 11 through the air pipe 6. The spray hood 11 is located in front of the first roller 12, and the ejected high-pressure air is in an inclined state, which can blow the sand and gravel remaining on the asphalt pavement out of the detection area, thereby avoiding the occurrence of detection errors.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A road surface flatness detection device for an asphalt road surface layer, comprising a movable seat (1), characterized in that: The movable seat (1) is provided with a sliding cavity (2) inside, and the sliding cavity (2) is provided with at least seven, the sliding cavity (2) is provided with a movable detection block (3) inside, and the movable detection block (3) and the movable seat (1) are limited by sliding, the movable detection block (3) is provided with a first roller (12) inside, and the first roller (12) and the movable detection block (3) are connected through a rotating shaft, and detection cavities (18) are provided on both sides of the sliding cavity (2), and the upper and lower ends of the detection cavity (18) are A pressure sensor (19) is installed, and the pressure sensor (19) is fixed to the detection cavity (18) by screws. Contact blocks (17) are installed on both sides of the movable detection block (3). One side of the contact block (17) is welded and fixed to the movable detection block (3), and the other side of the contact block (17) is slidably limited to the detection cavity (18). A spring (20) is installed outside the pressure sensor (19), and two ends of the spring (20) are respectively fixed to the detection cavity (18) and the contact block (17).

2. The device for detecting the roughness of an asphalt pavement layer according to claim 1, characterized in that: The output end of the pressure sensor (19) is connected to a single-chip microcomputer, and a warning light (4) is installed on the rear side of the upper end surface of the movable seat (1). The warning light (4) is adhered and fixed to the movable seat (1), and the input end of the warning light (4) is connected to the single-chip microcomputer.

3. The device for detecting the roughness of an asphalt pavement layer according to claim 1, characterized in that: Lifting blocks (13) are installed on both sides of the movable seat (1), and a second roller (14) is installed inside the lifting block (13). The shafts at both ends of the second roller (14) are connected to the lifting block (13) through a rotating shaft, and the lower end of the second roller (14) extends to the bottom of the movable seat (1).

4. The device for detecting the road surface flatness of an asphalt road surface layer according to claim 3, characterized in that: An adjusting seat (7) is fixedly arranged on both sides of the upper end surface of the movable seat (1), an adjusting wheel (8) is installed above the adjusting seat (7), and the adjusting wheel (8) is rotatably connected to the adjusting seat (7), a movable column (15) is fixedly arranged above the lifting block (13), and the movable column (15) and the adjusting seat (7) are slidably limited, and a screw rod (16) is fixedly installed at the lower end of the adjusting wheel (8), the screw rod (16) extends to the inside of the movable column (15), and the external thread of the screw rod (16) is adapted to the internal thread hole of the movable column (15).

5. The device for detecting the roughness of an asphalt pavement layer according to claim 1, characterized in that: A blowing hood (11) is installed at the front end of the movable seat (1), an air pump (5) is fixedly installed on the front side of the upper end surface of the movable seat (1), an air pipe (6) is installed at the air outlet end of the air pump (5), and the other end of the air pipe (6) is connected to one side of the blowing hood (11).

6. The device for detecting the road surface flatness of an asphalt road surface layer according to claim 1, characterized in that: Fixed blocks (9) are provided on both sides of the rear end of the movable seat (1), and the fixed blocks (9) are fixed to the movable seat (1) by welding, and handles (10) are installed above the fixed blocks (9).

7. The device for detecting the road surface flatness of an asphalt road surface layer according to claim 2, characterized in that: The warning light (4) switches between green, yellow and red states.

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