Asphalt mixture detection device

Abstract

The utility model relates to the technical field of road detection equipment, in particular to an asphalt mixture detection device which comprises a mounting bottom shell, a mixture fixing mechanism arranged in the mounting bottom shell, and a heating friction mechanism positioned in a U-shaped mounting frame and acting on the mixture fixing mechanism, the heating friction mechanism comprises an inverted-U-shaped frame connected with one end of the piston rod, a hot air blowing mechanism arranged in the inverted-U-shaped frame and acting on the outer wall of the roller, a heating mechanism arranged on one side of the inverted-U-shaped frame and communicating with an air inlet port of the hot air blowing mechanism, and an air draft mechanism arranged on one side of the inverted-U-shaped frame and corresponding to the heating mechanism. The driving mechanism is arranged on one side of the inverted-U-shaped frame and located below the air draft mechanism. The driving mechanism is in transmission fit with the air draft mechanism and one end of the first rotating shaft. The device ensures that nearly real pavement temperature is maintained in roller detection, the simulation comprehensiveness and authenticity are enhanced, the detection result is close to reality, and the heating efficiency and the device comprehensiveness are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of road detection equipment, in particular to an asphalt mixture detection device. Background Technique

[0002] Asphalt mixture is the main material for paving roads in China at present. Asphalt mixture is the general term for mixtures composed of mineral materials and asphalt binders. Before paving an asphalt road surface, it is often necessary to prepare asphalt mixture samples according to various mixing ratios. During the preparation process, various testing instruments are often used to test the mixtures, and the asphalt mixture samples with the best quality are selected for subsequent road surface paving. There are a variety of existing testing equipment, which separately detect asphalt mixture samples for a specific performance index, that is, each testing equipment only detects a certain performance index of the asphalt mixture sample. Multiple performance indexes of the asphalt material are detected by multiple devices, and then the asphalt mixture samples are selected according to each performance index. After selecting the asphalt mixture samples according to the above detection method, the staff will carry out production based on the performance indexes of the asphalt mixture samples and directly use the finished products of the mixture samples for subsequent road paving.

[0003] An asphalt pavement simulated life detection device with the patent number CN211576791U disclosed in the Chinese patent. Although a heating base is equipped to effectively heat the asphalt mixture on the asphalt bearing plate during the process of simulating the actual use conditions of the asphalt road surface, there are still limitations in comprehensively simulating the thermal effect generated by the rolling of the wheels on the road surface, that is, the rollers imitating the movement of the wheels are not heated synchronously, which to a certain extent limits the reduction degree of the detection environment to the real road conditions and the heating efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide an asphalt mixture detection device, which is used to solve the problem that when the existing device detects asphalt mixture, although the device is provided with a heating base to heat the asphalt mixture, the rollers imitating the wheels are not heated synchronously, which limits the simulation of the thermal effect of the real road conditions and the overall heating efficiency, and reduces the reduction degree of the detection environment.

[0005] To achieve the above object, the present utility model provides the following technical solutions: An asphalt mixture detection device, comprising an installation bottom shell, a U-shaped installation frame provided on the upper side of the installation bottom shell, a mixture fixing mechanism provided in the installation bottom shell, a hydraulic cylinder provided on the upper side of the U-shaped installation frame, and a piston rod connected to the output end of the hydraulic cylinder. It further includes a heating and friction mechanism located in the U-shaped installation frame and acting on the mixture fixing mechanism; the heating and friction mechanism includes an inverted U-shaped frame connected to one end of the piston rod, a first rotating shaft rotatably connected in the inverted U-shaped frame, a roller provided on the outer wall of the first rotating shaft, a hot air blowing mechanism provided in the inverted U-shaped frame and acting on the outer wall of the roller, a heating mechanism provided on one side of the inverted U-shaped frame and communicating with the air inlet port of the hot air blowing mechanism, an air extraction mechanism provided on one side of the inverted U-shaped frame and corresponding to the heating mechanism, and a driving mechanism provided on one side of the inverted U-shaped frame and below the air extraction mechanism. The driving mechanism is respectively in transmission cooperation with the air extraction mechanism and one end of the first rotating shaft.

[0006] Further, the heating mechanism includes a heating opening provided on one side of the inverted U-shaped frame and a heating electric wire provided in the heating opening.

[0007] Further, the air extraction mechanism includes a cover provided on one side of the inverted U-shaped frame and corresponding to the heating opening, two air inlets provided on one side of the cover, a dust filter net provided in the air inlets, an L-shaped installation frame provided on one side of the inverted U-shaped frame, a second rotating shaft rotatably connected to one side of the inner wall of the L-shaped installation frame, and a fan blade provided on the second rotating shaft and located in the cover. The second rotating shaft is located between the two air inlets.

[0008] Further, the hot air blowing mechanism includes a wind guiding hopper provided on one side of the inner wall of the inverted U-shaped frame and corresponding to the heating opening, an air delivery pipe communicating with the air outlet of the wind guiding hopper and having one end connected to the other side of the inner wall of the inverted U-shaped frame, and a plurality of air outlet pipes linearly arranged along the length direction of the outer wall of the air delivery pipe and provided on the lower side of the outer wall of the air delivery pipe.

[0009] Further, the driving mechanism includes a motor provided on one side of the L-shaped installation frame, an output shaft connected to the output end of the motor and located in the L-shaped installation frame, a speed reducer connected to one end of the output shaft, pulley wheels respectively provided on the outer walls of the output shaft and the second rotating shaft and longitudinally spaced apart, and a belt provided on the two pulley wheels. One end of the speed reducer is connected to one end of the first rotating shaft.

[0010] Further, a support seat connected to the lower side of the speed reducer is provided on the bottom side of the inner wall of the L-shaped installation frame.

[0011] Further, the mixture fixing mechanism includes placing grooves provided on both sides of the inner wall of the installation bottom shell, heating aluminum plates provided on the inner walls of the placing grooves, asphalt bearing plates provided in the placing grooves, jacks provided on both sides of the asphalt bearing plates respectively, a bidirectional threaded rod rotatably connected inside the installation bottom shell and located below the placing grooves, a turntable provided at one end of the bidirectional threaded rod and located on one side of the installation bottom shell, moving plates threadedly engaged with the bidirectional threaded rod and located on both sides of the placing grooves respectively, and positioning insertion posts provided on the two moving plates and arranged oppositely, and the positioning insertion posts are matched with the jacks.

[0012] Further, sliding rods are provided on the inner walls of the placing grooves and located below the bidirectional threaded rod, and both of the moving plates are slidably engaged with the sliding rods.

[0013] Further, two support platforms arranged at intervals are provided on the lower side of the placing groove, and the bidirectional threaded rod is located between the two support platforms.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] When detecting the asphalt mixture sample, the present utility model performs heat treatment on the rollers under rolling friction through the coordinated operation of the hot air blowing mechanism, the heating mechanism, the air extraction mechanism and the driving mechanism. This device not only drives the simultaneous operation of the air extraction mechanism and the rollers through the driving mechanism, but also performs synchronous heat treatment during the rolling friction process of the rollers, ensuring that during the simulation detection process, the temperature state of the rollers always closely approximates the warm state when the actual wheels are driving on the asphalt road surface; this device ensures that the rollers always maintain a temperature state close to that of the actual wheels driving on the asphalt road surface during the detection process, further enhancing the comprehensiveness and authenticity of the simulation detection, making the detection results closer to the actual road conditions, and improving the heating efficiency and comprehensiveness of the entire detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic cross-sectional view of the asphalt mixture detection device of the present utility model;

[0017] Figure 2 is of the present utility model Figure 1 magnified schematic view at A in;

[0018] Figure 3 is a schematic structural view of the placing groove of the present utility model;

[0019] Figure 4 is a schematic structural view of the U-shaped mounting frame of the present utility model;

[0020] Figure 5 is a system control block diagram of the asphalt mixture detection device of the present utility model.

[0021] In the figure: 1. U-shaped mounting bracket; 2. Installation bottom shell; 3. Inverted U-shaped bracket; 4. Heating opening; 5. Heating wire; 6. Air guide funnel; 7. Air supply pipe; 8. Air outlet pipe; 9. Housing; 10. Air inlet; 11. Dust filter screen; 12. L-shaped mounting bracket; 13. Motor; 14. Output shaft; 15. Reducer; 16. First rotating shaft; 17. Roller; 18. Support; 19. Pulley; 20. Belt; 21. Second rotating shaft; 22. Fan blade; 23. Placing groove; 24. Heat-generating aluminum plate; 25. Asphalt bearing plate; 26. Jack; 27. Support platform; 28. Bidirectional threaded rod; 29. Turntable; 30. Moving plate; 31. Positioning plug; 32. Slide bar; 33. Piston rod; 34. Hydraulic cylinder. Detailed implementation mode

[0022] Please refer to Figures 1-5 , an asphalt mixture detection device, including an installation bottom shell 2, a U-shaped mounting bracket 1 connected to the upper side of the installation bottom shell 2, a mixture fixing mechanism arranged in the installation bottom shell 2, a hydraulic cylinder 34 installed on the upper side of the U-shaped mounting bracket 1, and a piston rod 33 connected to the output end of the hydraulic cylinder 34. It also includes a heating and friction mechanism located in the U-shaped mounting bracket 1 and acting on the mixture fixing mechanism; the heating and friction mechanism includes an inverted U-shaped bracket 3 connected to one end of the piston rod 33, a first rotating shaft 16 rotatably connected in the inverted U-shaped bracket 3, a roller 17 installed on the outer wall of the first rotating shaft 16, a hot air blowing mechanism arranged in the inverted U-shaped bracket 3 and acting on the outer wall of the roller 17, a heating mechanism arranged on one side of the inverted U-shaped bracket 3 and communicated with the air inlet port of the hot air blowing mechanism, an air extraction mechanism arranged on one side of the inverted U-shaped bracket 3 and corresponding to the heating mechanism, and a driving mechanism arranged on one side of the inverted U-shaped bracket 3 and below the air extraction mechanism. The driving mechanism is respectively in transmission cooperation with the air extraction mechanism and one end of the first rotating shaft 16; when detecting an asphalt mixture sample, control the hydraulic cylinder 34, the driving mechanism, and the heating mechanism to start. The hydraulic cylinder 34 drives the roller 17 to contact the asphalt mixture sample on the mixture fixing mechanism and apply a downward pressure. The driving mechanism simultaneously drives the air extraction mechanism and the first rotating shaft 16 to rotate. The first rotating shaft 16 drives the roller 17 to rotate, and performs rolling friction on the asphalt mixture sample. The air extraction mechanism sucks external air and enters the heating mechanism. The heating mechanism heats the sucked air. The heated hot air enters the hot air blowing mechanism and then is ejected through the hot air blowing mechanism, blowing towards the roller 17 to heat the roller 17. This device ensures that the roller 17 always maintains a temperature state close to the actual wheel traveling on the asphalt road surface during the detection process, further enhances the comprehensiveness and authenticity of the simulation detection, makes the detection result closer to the actual road condition, and improves the heating efficiency and comprehensiveness of the entire detection device.

[0023] The heating mechanism includes a heating opening 4 formed on one side of the inverted U-shaped frame 3 and a heating wire 5 installed in the heating opening 4; the air drawn into the heating opening 4 is heated by the heating wire 5, thereby facilitating the heating treatment of the drawn air.

[0024] The air extraction mechanism includes a housing 9 connected to one side of the inverted U-shaped frame 3 and corresponding to the heating opening 4, two air inlets 10 formed on one side of the housing 9, a dust filter net 11 installed in the air inlets 10, an L-shaped mounting frame 12 connected to one side of the inverted U-shaped frame 3, a second rotating shaft 21 rotatably connected to one side of the inner wall of the L-shaped mounting frame 12, and a fan blade 22 connected to the second rotating shaft 21 and located inside the housing 9. The second rotating shaft 21 is located between the two air inlets 10; by rotating the second rotating shaft 21, the fan blade 22 is driven to rotate, and the external air is drawn into the housing 9 through the two air inlets 10. When the air enters the housing 9, the dust in the air is filtered by the dust filter net 11.

[0025] The hot air blowing mechanism includes a wind guiding hopper 6 connected to one side of the inner wall of the inverted U-shaped frame 3 and corresponding to the heating opening 4, an air delivery pipe 7 communicated with the air outlet of the wind guiding hopper 6 and having one end connected to the other side of the inner wall of the inverted U-shaped frame 3, and a plurality of air outlet pipes 8 communicated with the lower side of the outer wall of the air delivery pipe 7 and linearly arranged in an array along the length direction of the air delivery pipe 7; the heated air enters the air delivery pipe 7 through the wind guiding hopper 6 and then is blown out through the plurality of air outlet pipes 8 to heat the outer wall of the roller 17.

[0026] The driving mechanism includes a motor 13 provided on one side of the L-shaped mounting frame 12, an output shaft 14 connected to the output end of the motor 13 and located inside the L-shaped mounting frame 12, a speed reducer 15 connected to one end of the output shaft 14, pulley wheels 19 respectively provided on the outer walls of the output shaft 14 and the second rotating shaft 21 and longitudinally arranged at intervals, and a belt 20 provided on the two pulley wheels 19. One end of the speed reducer 15 is connected to one end of the first rotating shaft 16; by controlling the motor 13 and the speed reducer 15 to start, the motor 13 drives the output shaft 14 to rotate. The pulley wheel 19 on the outer wall of the output shaft 14 drives the pulley wheel 19 on the second rotating shaft 21 to rotate through the belt 20, thereby driving the second rotating shaft 21 to rotate. At the same time, the first rotating shaft 16 connected to one end of the speed reducer 15 is driven to rotate, so that the fan blade 22 and the roller 17 are driven to rotate simultaneously by the motor 13, realizing the efficient utilization of energy and the optimization of the detection process.

[0027] A support 18 connected to the lower side of the speed reducer 15 is connected to the bottom side of the inner wall of the L-shaped mounting frame 12; the speed reducer 15 is conveniently supported and fixed by the support 18.

[0028] The mixture fixing mechanism includes placing grooves 23 connected to both sides of the inner wall of the installation bottom shell 2, heating aluminum plates 24 provided on the inner walls of the placing grooves 23, asphalt bearing plates 25 placed in the placing grooves 23, jacks 26 provided on both sides of the asphalt bearing plates 25 respectively, a bidirectional threaded rod 28 rotatably connected inside the installation bottom shell 2 and located below the placing grooves 23, a turntable 29 connected to one end of the bidirectional threaded rod 28 and located on one side of the installation bottom shell 2, moving plates 30 threadedly engaged with the bidirectional threaded rod 28 and located on both sides of the placing grooves 23 respectively, and positioning insertion posts 31 connected to the two moving plates 30 and arranged oppositely, the positioning insertion posts 31 being in mutual cooperation with the jacks 26; threaded holes for threadedly engaging with the bidirectional threaded rod 28 are provided on the moving plates 30; the asphalt mixture sample on the upper side of the asphalt bearing plate 25 is heated by the heating aluminum plates 24; when replacing different asphalt mixture samples, rotate the turntable 29 to drive the bidirectional threaded rod 28 to rotate, drive the two moving plates 30 to move away from each other, the two positioning insertion posts 31 are respectively removed from the two jacks 26, then take out the asphalt bearing plate 25 from the placing groove 23, put the next asphalt bearing plate 25 with an asphalt mixture sample laid on its upper side into the placing groove 23, rotate the turntable 29 in the reverse direction to drive the two positioning insertion posts 31 to be respectively inserted into the corresponding jacks 26, and position the asphalt bearing plate 25 in the placing groove 23. Therefore, when the device replaces the asphalt bearing plate 25 laid with an asphalt mixture sample, it has the characteristics of simple replacement method and easy operation.

[0029] A sliding rod 32 is provided on the inner wall of the placing groove 23 and located below the bidirectional threaded rod 28. Both moving plates 30 are slidably engaged with the sliding rod 32. An opening hole for threadedly engaging with the sliding rod 32 is provided on the moving plates 30. When the moving plates 30 are threadedly engaged with the bidirectional threaded rod 28 and move, the moving plates 30 slide on the sliding rod 32 at the same time. By the sliding cooperation between the sliding rod 32 and the moving plates 30, it is convenient to limit the movement of the moving plates 30.

[0030] Two support platforms 27 arranged at intervals are connected to the lower side of the placing groove 23. The bidirectional threaded rod 28 is located between the two support platforms 27; through the two support platforms 27, it is convenient to further connect the placing groove 23 and the installation bottom shell 2, and improve the stability of the placing groove 23.

[0031] A controller is provided on the outer wall of the U-shaped mounting frame 1. The controller is electrically connected to the motor 13, the heating wire 5, the hydraulic cylinder 34, the heating aluminum plate 24, and the speed reducer 15.

[0032] Working principle: When testing an asphalt mixture sample, lay the asphalt mixture sample on the upper side of the asphalt bearing plate 25, and place the asphalt bearing plate 25 into the placement groove 23. Rotate the turntable 29 to drive the rotation of the bidirectional threaded rod 28. The two moving plates 30 are in threaded cooperation with the bidirectional threaded rod 28 and approach each other, driving the two positioning pins 31 to be inserted into the corresponding jacks 26 respectively, positioning the asphalt bearing plate 25 in the placement groove 23. Then, control the hydraulic cylinder 34 and the motor 13 to start through the controller, and synchronously control the heating wire 5 and the heating aluminum plate 24 to be powered on. The hydraulic cylinder 34 drives the roller 17 to contact the asphalt mixture sample and apply downward pressure. The motor 13 drives the output shaft 14 to rotate. The pulley 19 on the outer wall of the output shaft 14 drives the pulley 19 on the second rotating shaft 21 to rotate through the belt 20, thereby driving the rotation of the second rotating shaft 21. At the same time, it drives the first rotating shaft 16 connected to one end of the speed reducer 15 to rotate. The first rotating shaft 16 drives the roller 17 to rotate, performing rolling friction on the asphalt mixture sample. At the same time, the second rotating shaft 21 rotates, driving the fan blade 22 to rotate, sucking external air into the housing 9 through the two air inlets 10. When the air enters the housing 9, the dust in the air is filtered through the dust filter net 11. Then the air enters the heating opening 4, is heated by the heating wire 5, and the heated air enters the air supply pipe 7 through the air guiding hopper 6, and then is blown out through the multiple air outlet pipes 8 to heat the outer wall of the roller 17. According to the depth of wear of the asphalt mixture, it is judged whether the asphalt mixture sample is qualified. This device ensures that the roller 17 always maintains a temperature state close to that of an actual vehicle driving on an asphalt road surface during the detection process, further enhancing the comprehensiveness and authenticity of the simulation detection, making the detection results closer to the actual road conditions, and improving the heating efficiency and comprehensiveness of the entire detection device.

[0033] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An asphalt mixture detection device, comprising an installation bottom shell (2), a U-shaped installation frame (1) arranged on the upper side of the installation bottom shell (2), a mixture fixing mechanism arranged in the installation bottom shell (2), a hydraulic cylinder (34) arranged on the upper side of the U-shaped installation frame (1), and a piston rod (33) connected to the output end of the hydraulic cylinder (34), characterized in that, It further includes a heating and friction mechanism located within the U-shaped mounting bracket (1) and acting on the mixture fixing mechanism; the heating and friction mechanism includes an inverted U-shaped frame (3) connected to one end of the piston rod (33), a first rotating shaft (16) rotatably connected within the inverted U-shaped frame (3), a roller (17) provided on the outer wall of the first rotating shaft (16), a hot air blowing mechanism provided within the inverted U-shaped frame (3) and acting on the outer wall of the roller (17), a heating mechanism provided on one side of the inverted U-shaped frame (3) and communicating with the air inlet port of the hot air blowing mechanism, an air extraction mechanism provided on one side of the inverted U-shaped frame (3) and corresponding to the heating mechanism, and a driving mechanism provided on one side of the inverted U-shaped frame (3) and below the air extraction mechanism, and the driving mechanism is respectively in transmission cooperation with the air extraction mechanism and one end of the first rotating shaft (16).

2. An asphalt mixture detection device according to claim 1, characterized in that, The heating mechanism includes a heating opening (4) provided on one side of the inverted U-shaped frame (3) and a heating wire (5) provided within the heating opening (4).

3. An asphalt mixture testing device according to claim 2, characterized in that, The air extraction mechanism includes a housing (9) provided on one side of the inverted U-shaped frame (3) and corresponding to the heating opening (4), two air inlet ports (10) provided on one side of the housing (9), a dust filter net (11) provided within the air inlet ports (10), an L-shaped mounting bracket (12) provided on one side of the inverted U-shaped frame (3), a second rotating shaft (21) rotatably connected to one side of the inner wall of the L-shaped mounting bracket (12), and a fan blade (22) provided on the second rotating shaft (21) and located within the housing (9), and the second rotating shaft (21) is located between the two air inlet ports (10).

4. The asphalt mixture detection device according to claim 3, wherein, The hot air blowing mechanism includes a wind guiding hopper (6) provided on one side of the inner wall of the inverted U-shaped frame (3) and corresponding to the heating opening (4), an air delivery pipe (7) communicating with the air outlet of the wind guiding hopper (6) and having one end connected to the other side of the inner wall of the inverted U-shaped frame (3), and a plurality of air outlet pipes (8) linearly arranged in an array along the length direction on the lower side of the outer wall of the air delivery pipe (7).

5. The asphalt mixture testing device according to claim 3, characterized in that, The driving mechanism includes a motor (13) provided on one side of the L-shaped mounting bracket (12), an output shaft (14) connected to the output end of the motor (13) and located within the L-shaped mounting bracket (12), a speed reducer (15) connected to one end of the output shaft (14), pulley wheels (19) respectively provided on the outer walls of the output shaft (14) and the second rotating shaft (21) and longitudinally spaced apart, and a belt (20) provided on the two pulley wheels (19), and one end of the speed reducer (15) is connected to one end of the first rotating shaft (16).

6. The asphalt mixture testing device according to claim 5, characterized in that, A support (18) connected to the lower side of the speed reducer (15) is provided at the bottom side of the inner wall of the L-shaped mounting bracket (12).

7. An asphalt mixture detection device according to claim 1, characterized in that, The mixture fixing mechanism includes placing grooves (23) provided on both sides of the inner wall of the installation bottom shell (2), heating aluminum plates (24) provided on the inner walls of the placing grooves (23), asphalt bearing plates (25) provided in the placing grooves (23), jacks (26) respectively provided on both sides of the asphalt bearing plate (25), a bidirectional threaded rod (28) rotatably connected in the installation bottom shell (2) and located below the placing grooves (23), a turntable (29) provided at one end of the bidirectional threaded rod (28) and located on one side of the installation bottom shell (2), moving plates (30) threadedly engaged with the bidirectional threaded rod (28) and located on both sides of the placing grooves (23), and positioning insertion posts (31) provided on the two moving plates (30) and arranged oppositely, and the positioning insertion posts (31) are mutually matched with the jacks (26).

8. The asphalt mixture testing device according to claim 7, wherein, A sliding rod (32) is provided on the inner wall of the placing groove (23) and located below the bidirectional threaded rod (28), and both of the two moving plates (30) are slidably engaged with the sliding rod (32).

9. The asphalt mixture testing device according to claim 7, characterized in that, Two support platforms (27) arranged at intervals are provided on the lower side of the placing groove (23), and the bidirectional threaded rod (28) is located between the two support platforms (27).

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