Asphalt Pavement Construction Flatness Measurement Mechanism

Abstract

The present invention discloses a flatness measuring mechanism for asphalt pavement construction, which includes a main body bin. At the same end of both sides of the main body bin, there is a jointly hinged mounting frame. At the top of the inner side of the mounting frame, away from one end of the main body bin, there is a cross beam plate. At the inner side of the mounting frame, away from one end of the main body bin, there is a brush roller. On one side of the top of the cross beam plate, there is a first driving device that is drivingly connected to the brush roller. In the present invention, the second driving device is controlled to drive the two screw rods to rotate synchronously and clockwise in the same direction. By using the thread action, the two movable frames are forced to gradually approach each other until the rollers abut against the asphalt ground. When the measuring mechanism is not in use, the second driving device can be controlled to drive the two screw rods to rotate counterclockwise, so that the lifting plate drives the measuring component to rise together until the bottom of the roller is retracted into the interior of the main body bin. At this time, the measuring mechanism can travel only by the four traveling wheels, avoiding some stones on the road surface from damaging the measuring component and affecting the measuring accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of asphalt pavement maintenance, and more specifically to a measuring mechanism for the construction flatness of asphalt pavements. Background Art

[0002] An asphalt pavement refers to various types of pavements paved by incorporating road asphalt materials into mineral materials. The asphalt binder improves the ability of the granular materials used for paving to resist damage to the pavement caused by traffic and natural factors, making the pavement flat, less dusty, waterproof, and durable. Therefore, asphalt pavements are a type of high-grade pavement most widely used in road construction. During the daily maintenance of asphalt pavements, it is necessary to measure the flatness of the pavement in order to promptly detect raised or sunken pavements for repair.

[0003] Currently, when measuring the flatness of an asphalt pavement after construction, the measuring mechanism often travels on the pavement through a row of rollers, and observes the flatness of the pavement by using the bumps of the rollers caused by the unevenness of the pavement. However, it is unable to more vividly allow the inspectors to observe the scope and trend of the uneven parts of the pavement, and thus unable to improve the subsequent maintenance of the flatness of the asphalt pavement. Moreover, the current flatness measuring mechanism is often fixedly installed at the bottom and the inner bottom of the main bin. When the entire measuring mechanism is not in use, if the measuring mechanism is directly towed for a long distance, stones or rocks on the pavement often cause damage to the measuring components in the measuring mechanism and cannot automatically retract the measuring components into the main bin, reducing the maintenance cycle of the measuring mechanism. At the same time, after the maintenance of the asphalt pavement, there are often a large number of fine gravels or a large amount of dust on the pavement. These external factors will greatly affect the accuracy of the measuring mechanism for measuring the flatness. Manual cleaning not only increases the labor intensity of the operators but also causes dust to fly, affecting the operators' observation of the flatness of the pavement. Summary of the Invention

[0004] The purpose of the present invention is to provide a measuring mechanism for the construction flatness of asphalt pavements to solve the related problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: a flatness measuring mechanism for asphalt pavement construction, including a main body bin. At the same end of both sides of the main body bin, an installation frame is jointly hinged. At the top of the inner side of the installation frame, away from one end of the main body bin, a cross beam plate is installed. At the inner side of the installation frame, away from one end of the main body bin, a brush roller is provided. On one side of the top of the cross beam plate, a first driving device for driving the brush roller is provided. At the middle positions of both sides of the main body bin, electric lifting rods are symmetrically hinged. The output end of the electric lifting rod is hinged to the middle position of the top of the installation frame. At the top ends of both sides inside the main body bin, lead screws are symmetrically provided. On the outer sides of the two lead screws, at both ends, movable frames are symmetrically and threadedly provided. On both sides of the mutually approaching ends of the two movable frames, connecting rods are symmetrically hinged. At the ends of the four connecting rods, away from the movable frames, a lifting plate is jointly hinged. On the top of the lifting plate, a measuring component is provided. At one end of one movable frame, close to the lifting plate, high-speed cameras are evenly installed. At the middle position of the inner bottom of the main body bin, a square opening adapted to the lifting plate is provided. At one end of the main body bin, away from the brush roller, a second driving device for driving the two lead screws is provided. At one end of the main body bin, close to the brush roller, a dust removal component is provided. At the four corner positions of the bottom of the main body bin, traveling wheels are provided. On the top of the main body bin, a control panel is installed.

[0006] Preferably, the dust removal component includes a dust removal bin, guide wheels, wedges, an air extraction pump, a filter screen, a movable plate, a fixing plate, through holes, slots and a first spring. At one end of the inner bottom of the main body bin, close to the brush roller, a dust removal bin and an air extraction pump are respectively installed. The input end of the air extraction pump is communicated with one end inside the dust removal bin. Inside the dust removal bin, two filter screens are provided. At one end of the main body bin, close to the brush roller, a fixing plate is installed. At one end of the main body bin, close to the brush roller, a slot is provided. Inside the slot, a movable plate is provided. On the surfaces of the movable plate and the fixing plate, through holes are evenly provided. On one side inside the slot, three first springs are evenly installed. One end of the first spring is fixedly connected to the movable plate. At the top of the end of the movable plate, close to the dust removal bin, two guide wheels are installed. At one end of one movable frame, close to the brush roller, two wedges that cooperate with the guide wheels are installed.

[0007] Preferably, the measuring component includes a movable rod, a U-shaped bin, a connecting plate, a second spring, a roller and a U-shaped frame. On the top of the lifting plate, a U-shaped bin is installed. At the middle position inside the U-shaped bin, a connecting plate is installed. On the top of the lifting plate, seven rows of U-shaped frames are evenly provided. At the top end of each U-shaped frame, a movable rod is installed. The top end of the movable rod passes through the connecting plate and extends above the U-shaped bin. At the bottom of the outer side of the movable rod, a second spring is sleeved. The two ends of the second spring are respectively fixedly connected to the connecting plate and the U-shaped frame. At the bottom inside the U-shaped frame, a roller is provided.

[0008] Preferably, a sealing cover is provided at the top of the dust removal bin, and the sealing cover is fixedly connected to the top of the dust removal bin by screws.

[0009] Preferably, an exhaust pipe is installed at the output end of the air extraction pump, and the output port of the exhaust pipe extends to the outside of the main body bin and is parallel to the rotating shaft of the brush roller.

[0010] Preferably, height scale lines are provided on the outer side of the movable rod, sleeves are uniformly installed on the top of the U-shaped bin, and the movable rod is located inside the sleeves.

[0011] Preferably, the first driving device includes a rotating motor, a first pulley and a first transmission belt. A rotating motor is installed on one side of the top of the cross beam plate, and first pulleys are installed on the output shaft of the rotating motor and one end of the brush roller. A first transmission belt is provided on the outside of the two groups of first pulleys.

[0012] Preferably, the second driving device includes a servo motor, a second pulley and a second transmission belt. A servo motor is installed at the middle position of the inner bottom of the main body bin away from one end of the brush roller, and second pulleys are installed on the output shaft of the servo motor and the same end of the outer sides of the two screw rods. A second transmission belt is provided on the outside of the three groups of second pulleys.

[0013] Preferably, one end of the top of the main body bin is hinged with a top cover, and an observation window is provided at the middle position of the top of the top cover. The control panel is located at one end of the top of the top cover.

[0014] Preferably, connecting bearings are symmetrically installed on both sides of the two ends inside the main body bin, and the two ends of the outside of the screw rod are respectively fixedly connected to the inner sides of the adjacent two groups of connecting bearings.

[0015] Compared with the prior art, the present invention provides a mechanism for measuring the flatness of asphalt pavement construction, which has the following beneficial effects:

[0016] 1. When measuring the flatness of the road surface, the whole measuring mechanism is pushed forward. If the road surface is uneven, some rollers in the first row will drive the corresponding U-shaped frame and movable rod to rise together. Then, the following rows of rollers will rise in the same way as the first row of U-shaped frames. If the flatness of the asphalt road surface is always uneven, the multi-row movable rods will vividly show the flatness condition and trend of the road surface. During the process, when the movable rod rises, the second spring shortens and stores elastic potential energy. When the road surface is flat, the movable rod will drop to the original height, and the second spring will also extend to the original length. During the continuous rising and falling of the movable rod, several groups of high-speed cameras are controlled to take real-time pictures of each column of movable rods, record the flatness data of the road surface, so as to further improve the subsequent maintenance of the flatness of the asphalt road surface by the operator.

[0017] 2. When the present invention is in use, control the second driving device to drive the two lead screws to rotate synchronously and clockwise in the same direction. By the action of the threads, force the two movable frames to gradually approach each other. Then the four connecting rods will drive the lifting plate to gradually descend inside the main body bin until the rollers abut against the asphalt ground. When the measuring mechanism is not in use, control the second driving device to drive the two lead screws to rotate counterclockwise, so that the lifting plate drives the measuring assembly to rise together until the bottom of the rollers is retracted into the main body bin. At this time, the measuring mechanism can travel only by the four traveling wheels, avoiding some stones on the road surface from damaging the measuring assembly and affecting the measuring accuracy.

[0018] 3. When the present invention travels and measures the flatness of the asphalt road surface, control the electric lifting rod to extend, so that the mounting frame flips forward around its hinge axis until the brush roller contacts the asphalt road surface. Then control the first driving device to drive the brush roller to rotate clockwise to sweep away the stones and dust on the road surface in front of the measuring mechanism, thereby effectively improving the measurement accuracy of the entire measuring mechanism. And when controlling the second driving device to drive the two lead screws to rotate clockwise, the two movable frames gradually approach each other, and the wedge block on one movable frame no longer contacts the guide wheel, so that the first spring pushes the movable plate to move slightly inside the slot, making the through holes on the movable plate and the fixed plate coincide with each other. In this way, the outside air can enter the dust removal bin through the through holes. Then control the air extraction pump to extract air from the inside of the dust removal bin, automatically sucking the flying dust in front of the measuring mechanism into the inside of the dust removal bin, without the need for manual cleaning, and filtering by the filter screen, which can avoid the dust around the measuring mechanism from affecting the operator's understanding of the flatness of the asphalt road surface by observing the measuring assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a top view of the present invention;

[0020] Figure 2 is a top cross-sectional view of the present invention;

[0021] Figure 3 is a top cross-sectional view of the U-shaped bin of the present invention;

[0022] Figure 4 is a top cross-sectional view of the dust removal bin of the present invention;

[0023] Figure 5 is a bottom view of the present invention;

[0024] Figure 6 is a side cross-sectional view of the measuring assembly of the present invention;

[0025] Figure 7 is a three-dimensional schematic diagram of the movable plate and the fixed plate of the present invention;

[0026] Figure 8 of the present inventionFigure 4 Enlarged view of part A

[0027] In the figure: 1, main body bin; 2, control panel; 3, first driving device; 4, brush roller; 5, cross beam plate; 6, mounting bracket; 7, electric lifting rod; 8, dust removal assembly; 801, dust removal bin; 802, guide wheel; 803, wedge block; 804, air extraction pump; 805, filter screen; 806, movable plate; 807, fixed plate; 808, through hole; 809, slot; 810, first spring; 9, measuring assembly; 901, movable rod; 902, U-shaped bin; 903, connecting plate; 904, second spring; 905, roller; 906, U-shaped frame; 10, lifting plate; 11, second driving device; 12, traveling wheel; 13, square opening; 14, connecting rod; 15, high-speed camera; 16, movable frame; 17, lead screw; 18, exhaust pipe. Specific implementation mode

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-8 , the present invention provides a technical solution: an asphalt pavement construction flatness measuring mechanism, including a main body bin 1. The same end on both sides of the main body bin 1 is jointly hinged with a mounting bracket 6. The top of the inner side of the mounting bracket 6 away from the main body bin 1 is provided with a cross beam plate 5. A brush roller 4 is arranged at the inner side of the mounting bracket 6 away from the main body bin 1. A first driving device 3 for driving the brush roller 4 is arranged on one side of the top of the cross beam plate 5. Electric lifting rods 7 are symmetrically hinged at the middle positions on both sides of the main body bin 1. The output end of the electric lifting rod 7 is hinged with the middle position of the top of the mounting bracket 6. Lead screws 17 are symmetrically arranged at the top ends on both sides inside the main body bin 1. Movable frames 16 are symmetrically and threadedly arranged at both ends of the outer sides of the two lead screws 17. Connecting rods 14 are symmetrically hinged at both sides of the mutually approaching ends of the two movable frames 16. The four connecting rods 14 away from the movable frames 16 are jointly hinged with a lifting plate 10. A measuring assembly 9 is arranged on the top of the lifting plate 10. High-speed cameras 15 are evenly installed at one end of a movable frame 16 close to the lifting plate 10. A square opening 13 adapted to the lifting plate 10 is opened at the middle position of the inner bottom of the main body bin 1. A second driving device 11 for driving the two lead screws 17 is arranged at the end of the main body bin 1 away from the brush roller 4. A dust removal assembly 8 is arranged at the end of the main body bin 1 close to the brush roller 4. Traveling wheels 12 are arranged at the four corner positions of the bottom of the main body bin 1. A control panel 2 is installed on the top of the main body bin 1.

[0030] Further, the dust removal assembly 8 includes a dust removal bin 801, guide wheels 802, wedge blocks 803, an air extraction pump 804, a filter screen 805, a movable plate 806, a fixed plate 807, through holes 808, slots 809, and a first spring 810. The dust removal bin 801 and the air extraction pump 804 are respectively installed at one end of the inner bottom of the main body bin 1 close to the brush roller 4. The input end of the air extraction pump 804 is communicated with one end inside the dust removal bin 801. Two groups of filter screens 805 are arranged inside the dust removal bin 801. A fixed plate 807 is installed at one end of the main body bin 1 close to the brush roller 4. A slot 809 is opened at one end of the inner part of the main body bin 1 close to the brush roller 4, and a movable plate 806 is arranged inside the slot 809. Through holes 808 are evenly opened on the surfaces of the movable plate 806 and the fixed plate 807. Three groups of first springs 810 are evenly installed on one side inside the slot 809, and one end of the first spring 810 is fixedly connected with the movable plate 806. Two guide wheels 802 are installed at the top of one end of the movable plate 806 close to the dust removal bin 801. Two wedge blocks 803 that cooperate with the guide wheels 802 are installed at one end of a group of movable frames 16 close to the brush roller 4.

[0031] Further, the measuring assembly 9 includes a movable rod 901, a U-shaped bin 902, a connecting plate 903, a second spring 904, rollers 905, and a U-shaped frame 906. The U-shaped bin 902 is installed at the top of the lifting plate 10, and a connecting plate 903 is installed at the middle position inside the U-shaped bin 902. Seven rows of U-shaped frames 906 are evenly arranged at the top of the lifting plate 10. A movable rod 901 is installed at the top of each group of U-shaped frames 906, and the top end of the movable rod 901 passes through the connecting plate 903 and extends above the U-shaped bin 902. A second spring 904 is sleeved on the outer side of the bottom of the movable rod 901, and both ends of the second spring 904 are fixedly connected with the connecting plate 903 and the U-shaped frame 906 respectively. Rollers 905 are arranged at the bottom inside the U-shaped frame 906.

[0032] Further, a sealing cover is arranged at the top of the dust removal bin 801, and the sealing cover is fixedly connected with the top of the dust removal bin 801 through screws. By opening the sealing cover, the filter screen 805 inside the dust removal bin 801 can be taken out and cleaned.

[0033] Further, an exhaust pipe 18 is installed at the output end of the air extraction pump 804, and the output port of the exhaust pipe 18 extends to the outside of the main body bin 1 and is parallel to the rotating shaft of the brush roller 4. By blowing the filtered air onto the ground directly in front of the main body bin 1, the residual dust on the ground is blown away, further ensuring the accuracy of the measurement of the asphalt pavement flatness by the measuring mechanism.

[0034] Further, height scale lines are provided on the outer side of the movable rod 901, and sleeves are evenly installed at the top of the U-shaped bin 902. The movable rod 901 is located inside the sleeves, which helps to improve the stability of the movable rod 901 during the lifting process, and the change in the flatness of the asphalt pavement can be understood by observing the height scale lines.

[0035] Further, the first driving device 3 includes a rotary motor, a first pulley, and a first transmission belt. A rotary motor is installed on one side of the top of the cross beam plate 5, and first pulleys are installed at one end of the output shaft of the rotary motor and the brush roller 4. A first transmission belt is commonly provided on the outer sides of the two groups of first pulleys, which helps to drive the brush roller 4 to rotate, and the asphalt pavement is cleaned by the rotating brush roller 4.

[0036] Further, the second driving device 11 includes a servo motor, a second pulley, and a second transmission belt. A servo motor is installed at the middle position of the inner bottom of the main body bin 1 away from one end of the brush roller 4, and second pulleys are installed at the same end of the output shaft of the servo motor and the outer sides of the two groups of lead screws 17. A second transmission belt is commonly provided on the outer sides of the three groups of second pulleys, which helps to drive the two groups of lead screws 17 to rotate synchronously and in the same direction.

[0037] Further, one end of the top of the main body bin 1 is hinged with a top cover, and an observation window is provided at the middle position of the top of the top cover. The control panel 2 is located at one end of the top of the top cover. By opening the top cover, the parts inside the main body bin 1 can be repaired and maintained.

[0038] Further, connecting bearings are symmetrically installed on both sides of the two ends inside the main body bin 1, and the two ends of the outer side of the lead screw 17 are respectively fixedly connected to the inner sides of the adjacent two groups of connecting bearings, which helps to improve the stability of the two groups of lead screws 17 during the rotation process.

[0039] Example 1, as Figures 2-5 shown, control the second driving device 11 to drive the two groups of lead screws 17 to rotate synchronously and clockwise in the same direction. Using the thread action, force the two groups of movable frames 16 to gradually approach each other, and the four groups of connecting rods 14 will drive the lifting plate 10 to gradually descend inside the main body bin 1 until the rollers 905 are in contact with the asphalt ground. When the measuring mechanism is not in use, the second driving device 11 can be controlled to drive the two groups of lead screws 17 to rotate counterclockwise, so that the lifting plate 10 drives the measuring assembly 9 to rise until the bottom of the rollers 905 is retracted into the main body bin 1. At this time, the measuring mechanism can travel only by the four groups of walking wheels 12, avoiding damage to the measuring assembly 9 caused by some stones on the road surface.

[0040] Example 2, as Figures 1-5 and Figures 7-8As shown, control the electric lifting rod 7 to extend, so that the mounting frame 6 flips forward with its hinge axis as the center until the brush roller 4 touches the asphalt road surface. Then, control the first driving device 3 to drive the brush roller 4 to rotate clockwise, sweeping away the stones and dust on the road surface in front of the measuring mechanism, thereby effectively improving the measurement accuracy of the entire measuring mechanism. When controlling the second driving device 11 to drive the two sets of lead screws 17 to rotate clockwise, the two sets of movable frames 16 gradually approach each other, and the wedge block 803 on one set of movable frames 16 no longer contacts the guide wheel 802, causing the first spring 810 to push the movable plate 806 to move slightly inside the slot 809, so that the through holes 808 on the movable plate 806 and the fixed plate 807 coincide with each other. In this way, the outside air can enter the dust removal chamber 801 through the through holes 808. Then, control the air extraction pump 804 to extract air from the inside of the dust removal chamber 801, automatically sucking the flying dust in front of the measuring mechanism into the inside of the dust removal chamber 801. When the two sets of movable frames 16 move away from each other and press against the inner ends of the main body chamber 1, the guide wheel 802 first abuts against the inclined surface of the wedge block 803, and then the wedge block 803 approaches the end inside the main body chamber 1, forcing the guide wheel 802 to drive the movable plate 806 to move slightly inside the slot 809. At this time, the through holes 808 on the movable plate 806 and the fixed plate 807 no longer coincide, and the dust removal chamber 801 can be sealed. Open the top cover of the main body chamber 1 regularly, and open the sealing cover on the top of the dust removal chamber 801, and then pull out the two sets of filter meshes 805 inside the dust removal chamber 801 for cleaning.

[0041] Working principle: Before use, connect the device to the power supply. First, control the second driving device 11 through the control panel 2 to drive the two lead screws 17 to rotate synchronously and clockwise in the same direction. Using the thread action, force the two movable frames 16 to gradually approach each other, and the four connecting rods 14 will drive the lifting plate 10 to gradually descend inside the main body bin 1 until the rollers 905 abut against the asphalt ground. During this process, as one movable frame 16 moves, the wedge block 803 no longer contacts the guide wheel 802, causing the first spring 810 to push the movable plate 806 to move slightly inside the slot 809, so that the through holes 808 on the movable plate 806 and the fixed plate 807 coincide with each other. In this way, the outside air can enter the dust removal bin 801 through the through holes 808. Then, control the electric lifting rod 7 to extend, so that the mounting frame 6 flips forward with its hinge axis as the center until the brush roller 4 contacts the asphalt road surface. Then, control the first driving device 3 to drive the brush roller 4 to rotate clockwise and push the measuring mechanism forward. The rotating brush roller 4 sweeps away the stones and dust on the road surface in front of the measuring mechanism. At the same time, control the air extraction pump 804 to extract air from the dust removal bin 801, automatically sucking the flying dust in front of the measuring mechanism into the dust removal bin 801. During the driving process of the measuring mechanism, if the road surface is uneven, some of the rollers 905 in the first row will drive the corresponding U-shaped frames 906 and the movable rods 901 to rise together. Then, the subsequent rows of rollers 905 will rise in the same way as the first row of U-shaped frames 906. If the asphalt road surface is always uneven, the multi-row movable rods 901 will vividly show the flatness condition and trend of the road surface. During this process, when the movable rod 901 rises, the second spring 904 shortens and stores elastic potential energy. When the road surface is flat, the movable rod 901 will descend to its original height, and the second spring 904 will also extend to its original length. During the continuous rising and falling process of the movable rod 901, control several groups of high-speed cameras 15 to take real-time pictures of each column of the movable rods 901 and record the flatness data of the road surface.

[0042] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0043] The electrical components mentioned in this article are all electrically connected to the external main controller and 220V mains power supply, and the main controller can be a conventional known device such as a computer for control.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Asphalt pavement construction flatness measurement mechanism, including main body bin (1), characterized in that: On the same end of both sides of the main body bin (1), there is a mounting frame (6) hinged together. At the top of the inner side of the mounting frame (6) away from the main body bin (1), there is a cross beam plate (5). At the inner side of the mounting frame (6) away from the main body bin (1), there is a brush roller (4). On one side of the top of the cross beam plate (5), there is a first driving device (3) drivingly connected to the brush roller (4). At the middle positions of both sides of the main body bin (1), there are electric lifting rods (7) symmetrically hinged. The output end of the electric lifting rod (7) is hinged to the middle position of the top of the mounting frame (6). At the top end of the inner wall of the main body bin (1), there are lead screws (17) symmetrically arranged. At both ends of the outer sides of the two groups of lead screws (17), there are movable frames (16) symmetrically arranged in a threaded manner. On both sides of the mutually approaching ends of the two groups of movable frames (16), there are connecting rods (14) symmetrically hinged. At the ends of the four groups of connecting rods (14) away from the movable frames (16), there is a lifting plate (10) hinged together. On the top of the lifting plate (10), there is a measuring component (9). On one end of the movable frame (16) close to the lifting plate (10), there are high-speed cameras (15) evenly installed. At the middle position of the inner bottom of the main body bin (1), there is a square opening (13) adapted to the lifting plate (10). At the end of the inner part of the main body bin (1) away from the brush roller (4), there is a second driving device (11) drivingly connected to the two groups of lead screws (17). At the end of the inner part of the main body bin (1) close to the brush roller (4), there is a dust removal component (8). At the four corner positions of the bottom of the main body bin (1), there are traveling wheels (12). On the top of the main body bin (1), there is a control panel (2). Among them: The dust removal component (8) includes a dust removal bin (801), guide wheels (802), wedge blocks (803), an air extraction pump (804), a filter screen (805), a movable plate (806), a fixed plate (807), through holes (808), slots (809) and a first spring (810). The dust removal bin (801) and the air extraction pump (804) are respectively installed at one end of the inner bottom of the main body bin (1) close to the brush roller (4). The input end of the air extraction pump (804) is communicated with one end inside the dust removal bin (801). Two groups of filter screens (805) are arranged inside the dust removal bin (801). A fixed plate (807) is installed at one end of the main body bin (1) close to the brush roller (4). A slot (809) is opened at one end of the inner part of the main body bin (1) close to the brush roller (4), and a movable plate (806) is arranged inside the slot (809). Through holes (808) are evenly opened on the surfaces of the movable plate (806) and the fixed plate (807). Three groups of first springs (810) are evenly installed on one side inside the slot (809), and one end of the first spring (810) is fixedly connected with the movable plate (806). Two guide wheels (802) are installed at the top of one end of the movable plate (806) close to the dust removal bin (801). Two wedge blocks (803) that cooperate with the guide wheels (802) are installed at one end of a group of movable frames (16) close to the brush roller (4).

2. The asphalt pavement construction flatness measurement mechanism according to claim 1, characterized in that: The measurement component (9) includes a movable rod (901), a U-shaped bin (902), a connecting plate (903), a second spring (904), rollers (905) and a U-shaped frame (906). A U-shaped bin (902) is installed at the top of the lifting plate (10), and a connecting plate (903) is installed at the middle position inside the U-shaped bin (902). Seven rows of U-shaped frames (906) are evenly arranged at the top of the lifting plate (10). A movable rod (901) is installed at the top of each U-shaped frame (906), and the top of the movable rod (901) passes through the connecting plate (903) and extends above the U-shaped bin (902). A second spring (904) is sleeved on the outer bottom of the movable rod (901). The two ends of the second spring (904) are respectively fixedly connected with the connecting plate (903) and the U-shaped frame (906). Rollers (905) are arranged at the bottom inside the U-shaped frame (906).

3. The asphalt pavement construction flatness measurement mechanism according to claim 1, characterized in that: A sealing cover is arranged at the top of the dust removal bin (801), and the sealing cover is fixedly connected with the top of the dust removal bin (801) by screws.

4. The asphalt pavement construction flatness measurement mechanism according to claim 1, characterized in that: An exhaust pipe (18) is installed at the output end of the air extraction pump (804), and the output port of the exhaust pipe (18) extends to the outside of the main body bin (1) and is parallel to the rotating shaft of the brush roller (4).

5. The asphalt pavement construction flatness measurement mechanism according to claim 2, characterized in that: Height scale lines are arranged on the outer side of the movable rod (901). Sleeve pipes are evenly installed at the top of the U-shaped bin (902), and the movable rod (901) is located inside the sleeve pipes.

6. The asphalt pavement construction flatness measurement mechanism according to claim 1, wherein: The first driving device (3) includes a rotary motor, a first pulley and a first transmission belt. A rotary motor is installed on one side of the top of the cross beam plate (5), and first pulleys are installed at one ends of the output shaft of the rotary motor and the brush roller (4). A first transmission belt is jointly arranged on the outer sides of the two first pulleys.

7. The asphalt pavement construction flatness measurement mechanism according to claim 1, characterized in that: The second driving device (11) includes a servo motor, a second pulley and a second transmission belt. A servo motor is installed at the middle position of the inner bottom of the main body bin (1) away from one end of the brush roller (4), and second pulleys are installed at the same ends of the output shaft of the servo motor and the outer sides of the two screw rods (17). A second transmission belt is jointly arranged on the outer sides of the three second pulleys.

8. The asphalt pavement construction flatness measurement mechanism according to claim 1, wherein: One end of the top of the main body bin (1) is hinged with a top cover, and an observation window is arranged at the middle position of the top of the top cover. The control panel (2) is located at one end of the top of the top cover.

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