Asphalt pavement rebound device for highway detection

Abstract

The utility model relates to a kind of asphalt pavement rebound device for highway detection, belong to highway detection technical field.The asphalt pavement rebound device for highway detection, including: underframe, drop hammer deflectometer body and cleaning mechanism, the asphalt pavement rebound device for highway detection described above, by being provided with cleaning mechanism in the bottom of underframe, the bristle of the bottom end setting of cleaning brush plate rotates in the process that worker reciprocating push-pull handle and the stone of road surface is cleaned, simultaneously, the cavity in the inside of cleaning brush plate is blown to the air blower that cleaning brush plate top surface is connected through, downward road surface is blown to the air hole that be opened between cleaning brush plate bottom bristle gap, small stone cleaned by bristle is blown, it is blown out the range below underframe, further guarantee the load plate inside in the process that drop hammer deflectometer body drops and bottom surface uniform contact, guarantee the accuracy of detection data.

Description

Technical Field

[0001] This utility model relates to the field of highway inspection technology, and in particular to an asphalt pavement rebound device for highway inspection. Background Technology

[0002] During the asphalt road paving process, rebound testing of the asphalt pavement is required, which necessitates the use of a deflectometer. Deflection is one of the important technical indicators for evaluating the quality of highway design and highway engineering. It reflects the overall strength of each layer of the pavement. The strength of the subgrade is generally reflected by the rebound modulus. Existing drop weight deflectometers include handheld, trailer-mounted, and vehicle-mounted types. Before testing with a trailer-mounted deflectometer, a lead vehicle or staff will survey the test section and remove large, obvious obstacles (such as stones, bricks, and branches) from the road surface. However, when the cleaning vehicle removes the debris, there is a risk that small stones may get stuck inside the porous structure of the asphalt pavement. These small stones can prevent the internal bearing plate of the deflectometer from making uniform contact with the road surface, thus affecting the accuracy of the deflectometer's test data. Utility Model Content

[0003] Therefore, it is necessary to provide an asphalt pavement rebound device for highway testing, which addresses the risk of small stones getting stuck inside the porous structure of asphalt pavement when cleaning up garbage by cleaning vehicles. These small stones can prevent the bearing plate inside the deflectometer from making uniform contact with the road surface, thus affecting the accuracy of the deflectometer's test data.

[0004] A road surface rebound device for highway testing includes: a base frame; and a falling weight deflectometer body, which is mounted above the base frame. A cleaning mechanism, located at the bottom of a base frame, is used to clean stones from the asphalt pavement at the bottom of the base frame. The cleaning mechanism includes a cleaning brush plate with stiff bristles at its bottom end. A drive assembly for driving the cleaning brush plate to clean the stones from the asphalt pavement is located at the top of the cleaning brush plate above the base frame. The cleaning brush plate has a cavity inside. Blowers are respectively installed on both sides of the top surface of the cleaning brush plate. Multiple air vents are opened on the bottom surface of the cleaning brush plate between the bristles.

[0005] In one embodiment, the drive assembly includes a gear and a rack. Grooves are respectively provided at both ends of the side wall of the base frame. The gear is rotatably disposed inside the groove, and the rack is slidably disposed inside the groove. The rack meshes with the outer arc surface of the gear. The ends of the two sets of racks are connected by a handle. The bottom output end of the gear passes through the bottom surface of the base frame and is fixedly connected to the top surface of the cleaning brush plate.

[0006] In one embodiment, the rack and handle are U-shaped, and the outer wall of the rack is slidably connected to the inner wall of the groove.

[0007] In one embodiment, the ends of the two sets of cleaning brushes do not contact each other.

[0008] In one embodiment, a suspension mechanism is provided on the top of the base frame for installing and fixing the falling weight deflectometer body. The suspension mechanism includes a bracket, a top frame is provided on the top of the bracket, a double-headed motor is provided on the top of the top frame, the output shafts at both ends of the double-headed motor are respectively connected to a take-up roller, the take-up roller is rotatably disposed between fixed frames, the fixed frames are respectively fixedly disposed on the top surface of the top frame, a suspension rope is wound around the outside of the take-up roller, and the end of the suspension rope is fixedly connected to a handle inside the falling weight deflectometer body.

[0009] In one embodiment, the top surfaces of the top frame and the support are respectively provided with through holes to facilitate the winding of the suspension rope.

[0010] In one embodiment, the base frame has a through hole on its surface, and the falling weight deflectometer body is movably disposed inside the through hole.

[0011] In one embodiment, the base frame has a placement groove on its surface, a controller is installed inside the placement groove, and casters are provided around the bottom of the base frame, with the casters having built-in braking function.

[0012] Beneficial effects 1. The above-mentioned asphalt pavement rebound device for highway testing has a cleaning mechanism installed at the bottom of the base frame. The bristles at the bottom of the cleaning brush plate rotate and clean the stones on the road surface as the worker pushes and pulls the handle back and forth. At the same time, the blower connected through the top surface of the cleaning brush plate blows air into the cavity inside the cleaning brush plate. The air is blown onto the road surface below through the air outlets opened between the bristles on the bottom surface of the cleaning brush plate, which blows the small stones cleaned by the bristles out of the area below the base frame. This ensures that the bearing plate inside the drop hammer deflectometer body is in uniform contact with the bottom surface during the descent of the body, thus ensuring the accuracy of the test data. 2. By pushing and pulling the handle, the rack and pinion drive gear is rotated, which in turn drives the cleaning brush to rotate and clean the road surface. The manual method reduces the overall power consumption of the equipment and avoids the normal use of the equipment due to insufficient outdoor power supply. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model; Figure 2 This is a schematic diagram of the overall back structure of this utility model; Figure 3 This is a schematic diagram of the structure of the falling weight deflectometer body in the descending state of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the base frame of this utility model; Figure 5 This is a cross-sectional view of the cleaning brush plate of this utility model.

[0015] Figure label: 100. Base frame; 200. Drop weight deflectometer body; 300. Suspension mechanism; 400. Cleaning mechanism; 101. Moving wheel; 102. Placement slot; 103. Through hole; 301. Bracket; 302. Top frame; 303. Dual-head motor; 304. Fixing frame; 305. Winding roller; 306. Suspension rope; 307. Controller; 401. Groove; 402. Gear; 403. Rack; 404. Handle; 405. Cleaning brush; 406. Blower; 407. Air outlet. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0017] The following is combined Figures 1-5 This invention describes an asphalt pavement rebound device for highway inspection.

[0018] In one embodiment, an asphalt pavement rebound device for highway inspection includes: a base frame 100; The main body 200 of the falling weight deflectometer is located above the base frame 100; A cleaning mechanism 400 is installed at the bottom of the base frame 100 and is used to clean the stones on the asphalt road surface at the bottom of the base frame 100. The cleaning mechanism 400 includes a cleaning brush plate 405. The bottom end of the cleaning brush plate 405 is provided with hard bristles. The top of the cleaning brush plate 405 is located above the base frame 100 and is provided with a drive assembly for driving the cleaning brush plate 405 to clean the stones on the asphalt road surface. A cavity is opened inside the cleaning brush plate 405. Blowers 406 are respectively provided through both sides of the top surface of the cleaning brush plate 405. Multiple air outlets 407 are opened on the bottom surface of the cleaning brush plate 405 between the bristles. like Figure 3 , Figure 4 and Figure 5 As shown, the drive assembly includes a gear 402 and a rack 403. The two ends of the side wall of the base frame 100 are respectively provided with grooves 401. The gear 402 is rotatably disposed inside the groove 401, and the rack 403 is slidably disposed inside the groove 401. The rack 403 is meshed with the outer arc surface of the gear 402. The ends of the two sets of racks 403 are connected by a handle 404. The bottom output end of the gear 402 passes through the bottom surface of the base frame 100 and is fixedly connected to the top surface of the cleaning brush plate 405. The rack 403 and the handle 404 are U-shaped, and the outer wall of the rack 403 is slidably connected to the inner wall of the groove 401. The ends of the two sets of cleaning brushes 405 do not contact each other. In this embodiment, grooves 401 are respectively provided on both sides of the through hole 103 on the lower side wall of the base frame 100, and a gear 402 is rotatably arranged inside the groove 401. A rack 403 is arranged inside the groove 401, and the side wall of the rack 403 is meshed with the gear 402. The racks 403 on both sides are connected by handles 404. The two sets of racks 403 and handles 404 form a U-shape, and the bottom end of the gear 402 penetrates the bottom surface of the base frame 100 and is connected to the cleaning brush plate 405. When it is necessary to clean the drop hammer bend... When the drop hammer deflector body 200 is lowered to test the road surface, the base frame 100 is fixed by the brake function set inside the moving wheel 101. By manually pushing and pulling the handle 404, the handle 404 drives the racks 403 on both sides to slide back and forth in the groove 401. The racks 403 drive the gear 402 to rotate, which further causes the cleaning brush 405 to clean the stones on the road surface at the bottom of the base frame 100, so as to avoid stones and other objects affecting the data of the drop hammer deflector body 200 to rebound test the asphalt road surface. like Figure 1 , Figure 2 and Figure 3As shown, a suspension mechanism 300 is provided on the top of the base frame 100 for installing and fixing the falling weight deflectometer body 200. The suspension mechanism 300 includes a bracket 301, a top frame 302 is provided on the top of the bracket 301, a double-head motor 303 is provided on the top of the top frame 302, the output shafts at both ends of the double-head motor 303 are respectively connected to the winding roller 305, the winding roller 305 is rotatably disposed between the fixed frames 304, the fixed frames 304 are respectively fixedly disposed on the top surface of the top frame 302, and a suspension rope 306 is wound around the outside of the winding roller 305. The end of the suspension rope 306 is fixedly connected to the handle inside the falling weight deflectometer body 200. The handle inside the falling weight deflector body 200 is connected to the bottom end of the lifting rope 306. The top end of the lifting rope 306 passes through the bracket 301 and the top frame 302 and is wound around the outside of the take-up roller 305. The output end of the dual-head motor 303 passes through the fixing frame 304 and is connected to the output end of the take-up roller 305. When the falling weight deflector body 200 needs to be lowered, the controller 307 controls the dual-head motor 303 to start. The dual-head motor 303 drives the take-up rollers 305 at both ends to rotate, loosening the lifting rope 306 wound around the outside of the take-up roller 305. The falling weight deflectometer body 200, suspended at the bottom of the suspension rope 306, descends. Once the bottom of the falling weight deflectometer body 200 contacts the road surface, the dual-head motor 303 stops rotating. The staff then uses the falling weight deflectometer body 200 to perform a rebound test on the road surface below. When the test is completed and the next test point needs to be tested, the controller 307 controls the dual-head motor 303 to rotate in the opposite direction, and the winding roller 305 winds up the suspension rope 306. The falling weight deflectometer body 200 is then lifted away from the ground by the suspension rope 306, and the staff can push the equipment to the next test point. The top surfaces of the top frame 302 and the support 301 are respectively provided with through holes to facilitate the winding of the hanging rope 306. The surface of the base frame 100 is provided with a through hole 103. The body 200 of the falling weight deflectometer is movably disposed inside the through hole 103. The surface of the base frame 100 is provided with a placement groove 102. The inside of the placement groove 102 is provided with a controller 307. The bottom surface of the base frame 100 is provided with casters 101 around its perimeter. The casters 101 have built-in brakes. The main body 200 of the falling weight deflectometer is movably installed inside the through hole 103 on the surface of the base frame 100. When the main body 200 of the falling weight deflectometer is lifted by the suspension rope 306, the main body 200 of the falling weight deflectometer is suspended inside the through hole 103 on the surface of the base frame 100. The structure of the bottom end of the main body 200 of the falling weight deflectometer in contact with the road surface is stored and placed through the through hole 103. The base frame 100 is provided with casters 101 around its bottom surface. The casters 101 have a built-in braking function. When the main body 200 of the falling weight deflectometer needs to be used, the base frame 100 is fixed by the brake inside the casters 101 to stabilize its stability during the testing process. Working principle: When in use, the staff pushes the equipment to the test point and manually pushes and pulls the handle 404 to drive the cleaning brush 405 to clean the road surface to be tested below, removing stones and other debris from the surface. Then, the blower 406 blows air into the cleaning brush 405 and discharges it through the air outlet 407 on the bottom surface of the cleaning brush 405, blowing the stones cleaned by the brush away from the bottom of the base frame 100. This prevents the stones from affecting the uniform contact between the bearing plate inside the drop weight deflectometer body 200 and the asphalt road surface, thereby affecting the test data of the drop weight deflectometer body 200. After cleaning, the dual-head motor 303 is started by the controller 307. The dual-head motor 303 drives the winding rollers 305 on both sides to release the suspension rope 306. The drop weight deflectometer body 200 suspended at the bottom of the suspension rope 306 is lowered. After the bottom of the drop weight deflectometer body 200 contacts the road surface, the dual-head motor 303 stops. The staff uses the drop weight deflectometer body 200 to perform rebound testing on the asphalt road surface. After the test is completed, the winding rollers 305 are started by the controller 307 to wind up the suspension rope 306. The drop weight deflectometer body 200 is lifted by the suspension rope 306, and the staff can move it to the next test point by pushing the device.

[0019] Additional notes: The model of the falling weight deflectometer body 200 in this application can be SHN-FWD-ST; It includes, but is not limited to, the following structures: Loading device; Load plate; Electron settling tester; printer.

[0020] It should be noted that the dual-head motor 303 and controller 307 mentioned above are all devices with relatively mature existing technology. The specific model can be selected according to actual needs. At the same time, the dual-head motor 303 and controller 307 can be powered by the built-in power supply or by the mains power. The specific power supply method should be selected according to the situation, which will not be elaborated here.

[0021] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An asphalt pavement rebound device for highway inspection, characterized in that, include: Base frame (100); The main body (200) of the falling weight deflectometer is located above the base frame (100); A cleaning mechanism (400) is located at the bottom of the base frame (100) and is used to clean the stones on the asphalt pavement at the bottom of the base frame (100). The cleaning mechanism (400) includes a cleaning brush plate (405). The bottom end of the cleaning brush plate (405) is provided with hard bristles. The top of the cleaning brush plate (405) is located above the base frame (100) and is provided with a drive assembly for driving the cleaning brush plate (405) to clean the stones on the asphalt pavement. The cleaning brush plate (405) has a cavity inside. Blowers (406) are respectively provided on both sides of the top surface of the cleaning brush plate (405). The bottom surface of the cleaning brush plate (405) has multiple air outlets (407) between the bristles.

2. The asphalt pavement rebound device for highway testing according to claim 1, characterized in that, The drive assembly includes a gear (402) and a rack (403). The two ends of the side wall of the base frame (100) are respectively provided with grooves (401). The gear (402) is rotatably disposed inside the groove (401), and the rack (403) is slidably disposed inside the groove (401). The rack (403) meshes with the outer arc surface of the gear (402). The ends of the two sets of racks (403) are connected by a handle (404). The bottom output end of the gear (402) passes through the bottom surface of the base frame (100) and is fixedly connected to the top surface of the cleaning brush plate (405).

3. The asphalt pavement rebound device for highway testing according to claim 2, characterized in that, The rack (403) and the handle (404) are U-shaped, and the outer wall of the rack (403) is slidably connected to the inner wall of the groove (401).

4. The asphalt pavement rebound device for highway testing according to claim 3, characterized in that, The ends of the two sets of cleaning brushes (405) do not contact each other.

5. The asphalt pavement rebound device for highway inspection according to claim 4, characterized in that, The base frame (100) is provided with a suspension mechanism (300) at the top for installing and fixing the falling weight deflectometer body (200). The suspension mechanism (300) includes a bracket (301), and a top frame (302) is provided at the top of the bracket (301). A double-head motor (303) is provided at the top of the top frame (302). The output shafts at both ends of the double-head motor (303) are respectively connected to a winding roller (305). The winding roller (305) is rotatably disposed between fixed frames (304). The fixed frames (304) are respectively fixedly disposed on the top surface of the top frame (302). A hanging rope (306) is wound around the outside of the winding roller (305). The end of the hanging rope (306) is fixedly connected to the handle inside the falling weight deflectometer body (200).

6. The asphalt pavement rebound device for highway testing according to claim 5, characterized in that, The top surfaces of the top frame (302) and the support (301) are respectively provided with through holes to facilitate the winding of the hoisting rope (306).

7. The asphalt pavement rebound device for highway inspection according to claim 6, characterized in that, The base frame (100) has a through hole (103) on its surface, and the falling weight deflectometer body (200) is movably disposed inside the through hole (103).

8. The asphalt pavement rebound device for highway inspection according to claim 7, characterized in that, The base frame (100) has a placement groove (102) on its surface. A controller (307) is installed inside the placement groove (102). The base frame (100) has casters (101) around its bottom surface. The casters (101) have built-in braking function.

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