Device and method for detecting consistency of modified asphalt
By using a double-needle self-falling detection module and weights of different weights in the modified asphalt consistency detection device, the test error problem caused by the consistent weight of the standard needle in the prior art is solved, and more accurate asphalt construction performance evaluation and experimental efficiency improvement are achieved.
Patent Information
- Application Number
- CN202510079483.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-18
- Publication Date
- 2025-04-18
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the testing process of the existing modified asphalt consistency detection device, the weight of the standard needle is consistent, making it difficult to judge the time spent by standard needles of different weights at the same depth of needle penetration, and the physical properties of different asphalt samples cannot be considered, resulting in errors in the test results.
A modified asphalt consistency detection device is designed. By setting multiple storage barrels and double-needle self-depressing detection modules on the turntable at an annular equal spacing, the module is added with weights of different weights to provide different gravity. The pulley drive unit drives the turntable to separate the double-needle self-depressing detection module from the threaded column, lacking support and action occurs, so that the detection needle pierces into the modified asphalt in the storage barrel, and recording the time required for each module to fall into the end point.
By simulating the asphalt needle insertion performance under different construction environments, testing data at different depths is provided, and the actual construction performance of different types of asphalt is more accurately reflected, the waiting time for a single test is reduced, the experimental efficiency is improved, and the actual engineering application scenarios can be more accurately simulated.
Smart Images
Figure CN119845797A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of modified asphalt performance testing, in particular to a modified asphalt consistency detection device and a method thereof. Background Art
[0002] The needle penetration test device for modified asphalt consistency detection is an important tool for evaluating the fluidity and construction performance of asphalt. It is widely used in asphalt production, quality control and construction sites. By testing the penetration depth of the needle into the asphalt sample within a specified time, the needle penetration value can intuitively reflect the consistency of the asphalt and help engineers judge the softness and hardness of the asphalt. The structure of this type of device includes a test bench, a standard needle, a depth gauge, a weight device, a timer and a temperature control system. The test bench has stable support and temperature control functions to ensure that the asphalt sample is tested at a specified temperature to avoid the influence of temperature fluctuations on the results. The standard needle is usually made of stainless steel, has a certain hardness and sharpness, and can effectively penetrate the asphalt sample. The depth gauge is used to accurately measure the penetration depth of the needle. There are usually two types: mechanical and electronic, providing measurement results of different accuracy. During the test, the needle and a 100-gram weight are placed on the surface of the asphalt sample according to standard operations, and the timer is started for a 5-second test. Then the penetration depth of the needle is measured and the needle penetration value is calculated. A larger penetration value indicates that the asphalt is softer and has better fluidity; a smaller penetration value indicates that the asphalt is harder and is suitable for high temperature environments or applications that require strong rutting resistance. Through these tests, engineers can obtain the adaptability, stability and quality assurance data of modified asphalt during construction, thereby optimizing the mix ratio and construction strategy to ensure the quality and long-term durability of road projects;
[0003] From the above, it can be seen that the existing modified asphalt consistency detection technology and device operation methods are basically the same, but the weight of the standard needle is consistent during its use. Each time the test is carried out, the same steps are followed one by one, and the test is carried out with different needle penetration times. Therefore, it is difficult to determine the time taken by standard needles of different weights under the condition of equal penetration depth. That is to say, in the current needle penetration test device, the weight of the standard needle is usually kept at about 100 grams. This is to ensure that the pressure applied to the asphalt sample during the test is constant and the test conditions are standardized. However, the weight of all standard needles is consistent, which means that they do not take into account the physical property differences of different asphalt samples when testing. For example, factors such as the hardness, fluidity and temperature of asphalt may affect its fluidity. Different asphalt samples may require different pressures to be applied to make the needle fully penetrate the sample. Even if all the operating steps and conditions are the same, the time difference of different samples is inevitable. Especially when using a needle of uniform weight to test different types of modified asphalt, harder or thicker asphalt may cause the needle to penetrate more slowly, thereby affecting the time required for the needle to penetrate to the specified depth. Conversely, softer or more fluid asphalt may result in errors in the test results when the asphalt sample is tested with a larger or smaller needle. Summary of the invention
[0004] The object of the present invention is to provide a modified asphalt consistency detection device and method thereof, wherein a plurality of one-to-one corresponding material storage barrels and double-needle self-falling detection modules are arranged at equal intervals in a ring on a turntable, and a threaded column for supporting the double-needle self-falling detection module is assembled on the inner wall of an outer disk sleeve, and weights of different weights are added to the double-needle self-falling detection modules at different positions to provide different gravity, and a pulley driving unit drives the turntable to rotate and separates the double-needle self-falling detection module and the threaded column, and then the double-needle self-falling detection module lacks support and moves, so that the detection needle penetrates into the modified asphalt in the material storage barrel, and the staff uses a timer to record the time required for each double-needle self-falling detection module to fall to the end point one by one, so as to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above object, the present invention provides the following technical solution: a modified asphalt consistency detection device, comprising:
[0006] A frame, a turntable is rotatably installed on one side of the top of the frame, and at least four annular double-needle self-falling detection modules with equal spacing are installed at the edge position of the top of the turntable, and two needle heads are installed on the moving end of the double-needle self-falling detection module, a chuck is fixed on the top of the turntable below the two needle heads, and a storage barrel is installed on the top of the chuck, and the same modified asphalt sample is contained in each storage barrel, and a photoelectric switch 1 and a photoelectric switch 2 are respectively installed on one side of the top of the frame, and the photoelectric switch 1 and the photoelectric switch 2 are respectively used to detect the starting point and the end point of the revolution of the same double-needle self-falling detection module;
[0007] The outer disc sleeve is arranged above the top edge of the turntable, and a plurality of threaded columns for supporting the double-needle self-falling detection module are detachably mounted on the inner wall of the outer disc sleeve. A pulley drive unit for driving the turntable to rotate and forcing the double-needle self-falling detection module to separate from the threaded columns is mounted at the bottom of the frame. After the double-needle self-falling detection module and the threaded column are separated, the needle head penetrates into the modified asphalt sample in the storage barrel under the action of gravity. A motor controller is mounted on one side of the surface of the frame, and the output end of the motor controller is electrically connected to the input end of the pulley drive unit.
[0008] Preferably, a plurality of internally threaded convex tubes, the same number as the double-needle self-falling detection modules, are integrally formed on the inner wall of the outer disc sleeve, the bottom end of the threaded column extends to the interior of the internally threaded convex tube and cooperates with the thread of the internally threaded convex tube, and a baffle is integrally formed on one end of the surface of the threaded column.
[0009] Preferably, the double-needle self-fall detection module includes two support rods fixed on the top of a turntable, a top plate fixed on the top of the two support rods, and a sliding rod slidably installed at the inner corner of the top plate, a U-mouth frame is fixed on the top of the sliding rod, and a load-bearing frame for holding weights is installed on the top of the U-mouth frame, and when the turntable is in the initial position, the top of the threaded column and the bottom of the U-mouth frame are in contact with each other.
[0010] Preferably, a double-rod cylinder is installed on the inner wall of one side of the U-mouth frame, and a flat plate is fixed to the top of the piston rod of the double-rod cylinder, the needle head is a threaded detection needle threadedly assembled on one side of the inside of the flat plate, a multi-column groove scraper cleaning structure is provided on one side of the top of the frame, and a reciprocating cam pushing module for driving the multi-column groove scraper cleaning structure to move is installed on the top of the frame on one side of the multi-column groove scraper cleaning structure, and the modified asphalt adhered to the outer peripheral surface of the threaded detection needle is scraped off by the multi-column groove scraper cleaning structure.
[0011] Preferably, the multi-column groove scraper cleaning structure includes a C-shaped beam fixed on the front and rear sides of the top of the frame, a tensioner installed on the outer wall of the two C-shaped beams away from each other, and a cross bar fixed at one end of the tensioner, one end of the surface of the cross bar is fixed with a U-shaped platform for sliding by being pulled by a reciprocating cam pushing module, and the extension line of the central axis of the cross bar is perpendicular to the extension line of the central axis of the threaded detection needle.
[0012] Preferably, a support platform is fixed to the top of the U-shaped platform, and a groove is provided at the top of the support platform, a scraper knife is fixed at one end inside the groove, and the reciprocating cam pushing module drives the U-shaped platform, the support platform and the scraper knife to slide back and forth in the extension direction of the cross bar and enables the scraper knife to scrape off the modified asphalt adhered to the threaded detection needle.
[0013] Preferably, the reciprocating cam pushing module includes a secondary shaft rotatably mounted on one side of the top end of the frame, a disc cam fixed on the top end of the secondary shaft, and a vertical shaft rotatably mounted on the other side of the top end of the frame, a main connecting plate and a secondary connecting plate are respectively fixed at two ends of the surface of the vertical shaft, a roller is rotatably mounted on one end of the main connecting plate, and the roller is located in the groove of the disc cam, a T-shaped slide is slidably mounted on one side of the top end of the frame, the top of the T-shaped slide and the outer wall of one side of the U-shaped table are bolted to each other, a swing arm is hinged on the top end of the frame on one side of the T-shaped slide, one end of the swing arm is movably connected to one end of the T-shaped slide, and a pitch adjusting rod is hinged on one side of the bottom end of the secondary connecting plate, and the end of the pitch adjusting rod away from the secondary connecting plate is hinged to the bottom end of the swing arm.
[0014] Preferably, the distance adjusting rod is composed of a U-shaped plate, a fisheye connecting rod 1 installed on the outer wall of one side of the U-shaped plate, and a fisheye connecting rod 2 installed on the outer wall of the other side of the U-shaped plate, one end of the fisheye connecting rod 1 is hinged to the bottom end of the return swing arm, and one end of the fisheye connecting rod 2 is hinged to the bottom end of the auxiliary connecting plate.
[0015] Preferably, the pulley drive unit includes a casing fixed at the bottom of the frame, a reduction motor installed inside the casing, and a main shaft fixed at the bottom end of the turntable, a pulley transmission structure 1 is arranged between the output shaft of the reduction motor and the main shaft, and a pulley transmission structure 2 is arranged between the main shaft and the secondary shaft.
[0016] The present invention also provides a modified asphalt consistency detection method, such as the modified asphalt consistency detection device described above, comprising the following steps:
[0017] S101: The staff needs to prepare and configure the device to ensure that the multiple storage barrels on the turntable have been correctly placed through the chuck, and the asphalt sample in each storage barrel has been prepared. The samples in each storage barrel need to be from the same batch and filled evenly to ensure the accuracy of the test results;
[0018] S102: Install weights of different weights on each double-needle self-falling detection module to simulate the needle penetration performance of the same batch of modified asphalt under different environments;
[0019] S103: When the device is ready, the staff starts the test. The staff operates the motor controller, and the pulley drive unit starts to work, driving the pulley to rotate the turntable. As the turntable rotates, the photoelectric switch 1 will not detect the position signal, and the photoelectric switch 2 will detect the position signal of one of the double-needle self-falling detection modules, and the pulley drive unit stops working. At this time, each double-needle self-falling detection module is separated from the threaded column. Since the double-needle self-falling detection module cannot be supported, the double-needle self-falling detection module will fall into the modified asphalt sample in the storage barrel according to the weight of the added weight, and start testing the needle penetration of the modified asphalt;
[0020] S104: After the needle head of the module falls, the needle will gradually enter the asphalt sample until the needle of the double-needle self-falling detection module falls to the end position; after the needle of the double-needle self-falling detection module descends to the end point, the staff uses a timer to record once until each double-needle self-falling detection module completes the time recording;
[0021] S105: There will be a time difference between the double-needle self-falling detection modules equipped with different weight Mafas, so as to analyze the penetration performance of modified asphalt under different weights and equal depths based on the test results of the same sample. By analyzing the penetration test results under different weights, the staff can judge the adaptability of the same type of modified asphalt in different construction environments.
[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the modified asphalt consistency detection device and method thereof are arranged with a plurality of one-to-one corresponding storage barrels and double-needle self-falling detection modules at equal intervals in a ring on the turntable, and a threaded column for supporting the double-needle self-falling detection module is assembled on the inner wall of the outer disk sleeve, and weights of different weights are added to the double-needle self-falling detection modules at different positions to provide different gravity, the pulley driving unit drives the turntable to rotate, and separates the double-needle self-falling detection module and the threaded column, and then the double-needle self-falling detection module lacks support and moves, so that the detection needle pierces By adding weights of different weights to the double-needle self-falling detection module, the penetration performance of asphalt in different construction environments can be simulated, such as simulating the construction characteristics of harder asphalt, softer asphalt and special modified asphalt, providing detection data of different depths, thereby more accurately reflecting the actual construction performance of different types of asphalt; and by arranging multiple storage barrels and double-needle self-falling detection modules at equal intervals on the turntable, multiple samples can be tested simultaneously, which not only reduces the waiting time for a single test, but also can improve the experimental efficiency by processing a large number of samples in parallel;
[0023] Finally, by adjusting the weights of different weights, the actual engineering application scenarios can be simulated more accurately, and the test gravity can be adjusted according to the different asphalt characteristics to obtain more accurate test results. The time required for each detection module from start to end is recorded using a timer, and the test results of different weights and sample types are analyzed to facilitate staff to obtain the test time of each sample in real time, so as to judge the penetration speed and penetration of different asphalts, and then evaluate their construction adaptability in different environments. At this time, by comparing the test data of multiple samples, researchers can find the performance differences of asphalts with different formulations in the penetration test, and then adjust the asphalt ratio to achieve the best construction effect and performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the main structure of the present invention;
[0025] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;
[0026] Figure 3 It is a schematic diagram of an isometric three-dimensional structure of the present invention in two equal angles;
[0027] Figure 4 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;
[0028] Figure 5 The three-dimensional structure of the present invention is shown in FIG. Figure 3 ;
[0029] Figure 6 It is a schematic diagram of a three-dimensional cross-sectional structure of the present invention;
[0030] Figure 7 It is a schematic diagram of the three-dimensional structure of the present invention;
[0031] Figure 8 The three-dimensional structure of the double-needle self-falling detection module of the second embodiment of the present invention is shown in FIG. Figure 1 ;
[0032] Fig. 9 The three-dimensional structure of the double-needle self-falling detection module of the second embodiment of the present invention is shown in FIG. Figure 2 ;
[0033] Fig.10 The three-dimensional structure diagram of the multi-column slot scraping and cleaning structure of the third embodiment of the present invention Figure 1 ;
[0034] Fig.11 It is a schematic diagram of the three-dimensional structure of the reciprocating cam push module according to the third embodiment of the present invention;
[0035] Fig.12 The three-dimensional structure diagram of the multi-column slot scraping and cleaning structure of the third embodiment of the present invention Figure 2 .
[0036] In the figure: 1, frame; 2, turntable; 3, outer disc sleeve; 301, internal thread convex tube; 4, threaded column; 401, baffle; 5, double needle self-falling detection module; 501, support rod; 502, top plate; 503, slide rod; 504, U-mouth frame; 505, load-bearing frame; 506, double rod cylinder; 507, flat plate; 508, threaded detection needle; 6, chuck; 7, storage barrel; 8, reciprocating cam push module; 801, secondary shaft; 802, disc cam; 803, vertical shaft; 804, main connecting plate; 805, secondary connecting plate; 806 , roller; 807, pitch-adjusting rod; 808, T-shaped slide; 809, swing arm; 9, multi-column groove scraper cleaning structure; 901, C-shaped beam; 902, tensioner; 903, crossbar; 904, U-shaped table; 905, support table; 906, groove; 907, scraper; 10, pulley drive unit; 1001, housing; 1002, reduction motor; 1003, main shaft; 1004, pulley transmission structure one; 1005, pulley transmission structure two; 11, motor controller; 12, photoelectric switch one; 13, photoelectric switch two. DETAILED DESCRIPTION
[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0038] Embodiment 1, by Figures 1 to 7 The present invention comprises a frame 1, a turntable 2 is rotatably mounted on one side of the top of the frame 1, and at least four annular double-needle self-falling detection modules 5 with equal spacing are mounted at the edge of the top of the turntable 2, two needle heads are mounted on the movable end of the double-needle self-falling detection module 5, a chuck 6 is fixed on the top of the turntable 2 below the two needle heads, and a storage barrel 7 is mounted on the top of the chuck 6, each storage barrel 7 contains the same modified asphalt sample, and a photoelectric switch 12 and a photoelectric switch 2 13 are respectively mounted on one side of the top of the frame 1, and the photoelectric switch 12 and the photoelectric switch 2 13 are respectively used to detect the starting point and the end point of the revolution of the same double-needle self-falling detection module 5;
[0039] The outer disc cover 3 is arranged above the top edge of the turntable 2. A plurality of threaded columns 4 for supporting the double-needle self-falling detection module 5 are detachably mounted on the inner wall of the outer disc cover 3. A pulley drive unit 10 for driving the turntable 2 to rotate and forcing the double-needle self-falling detection module 5 to separate from the threaded column 4 is mounted at the bottom of the frame 1. After the double-needle self-falling detection module 5 and the threaded column 4 are separated, the needle head pierces the modified asphalt sample in the storage barrel 7 under the action of gravity. A motor controller 11 is mounted on one side of the surface of the frame 1. The output end of the motor controller 11 is electrically connected to the input end of the pulley drive unit 10.
[0040] A plurality of internally threaded convex tubes 301, the same number as the double-needle self-falling detection module 5, are integrally formed on the inner wall of the outer disc sleeve 3. The bottom end of the threaded column 4 extends to the inside of the internally threaded convex tube 301 and is threadedly matched with the internally threaded convex tube 301. A baffle 401 is integrally formed on one end of the surface of the threaded column 4. When the outer disc sleeve 3 and the threaded column 4 are assembled, the bottom end of the threaded column 4 is screwed into the internally threaded convex tube 301 until the bottom end of the baffle 401 contacts the top end of the internally threaded convex tube 301. At this time, it indicates that the threaded column 4 is assembled in place, and the top end of the threaded column 4 supports the double-needle self-falling detection module 5.
[0041] A modified asphalt consistency detection method of this embodiment, such as the modified asphalt consistency detection device mentioned above, comprises the following steps:
[0042] S101: The staff needs to prepare and configure the device to ensure that the multiple storage barrels 7 on the turntable 2 have been correctly placed through the chuck 6, and the asphalt sample in each storage barrel 7 has been prepared. The samples in each storage barrel 7 need to be from the same batch and are evenly filled to ensure the accuracy of the test results;
[0043] S102: installing weights of different weights on each double-needle self-falling type detection module 5, and simulating the needle penetration performance of the same batch of modified asphalt under different environments by equipping the weights of different weights;
[0044] S103: When the device is ready, the staff starts the test. The staff operates the motor controller 11, and the pulley drive unit 10 starts to work, driving the pulley to rotate the turntable 2. As the turntable 2 rotates, the photoelectric switch 1 12 will not detect the position signal, and the photoelectric switch 2 13 will detect the position signal of one of the double-needle self-falling detection modules 5, and the pulley drive unit 10 stops working. At this time, each double-needle self-falling detection module 5 is separated from the threaded column 4. Since the double-needle self-falling detection module 5 cannot be supported, the double-needle self-falling detection module 5 will fall into the modified asphalt sample in the storage barrel 7 according to the weight of the added weight, and start testing the needle penetration of the modified asphalt;
[0045] S104: After the needle head of the module falls, the needle head will gradually enter the asphalt sample until the needle head of the double-needle self-falling detection module 5 falls to the end position; after the needle head of the double-needle self-falling detection module 5 descends to the end point, the staff uses a timer to record once until each double-needle self-falling detection module 5 completes the time recording;
[0046] S105: A time difference will be generated between the double-needle self-falling detection modules 5 equipped with different weight Mafas, so as to analyze the needle penetration performance of the modified asphalt under different weights and equal depths based on the test results of the same sample. By analyzing the needle penetration test results under different weights, the staff can judge the adaptability of the same type of modified asphalt in different construction environments.
[0047] Embodiment 2, based on embodiment 1, Figure 8 and Fig. 9 It is given that the double-needle self-falling detection module 5 includes two support rods 501 fixed on the top of the turntable 2, a top plate 502 fixed on the top of the two support rods 501, and a slide rod 503 slidably installed at the inner corner position of the top plate 502, a U-mouth frame 504 is fixed on the top of the slide rod 503, and a load-bearing frame 505 for holding weights is installed on the top of the U-mouth frame 504, and the load-bearing frame 505 is used to hold weights, so that the double-needle self-falling detection module 5 obtains different falling gravity, and the turntable 2 is in the initial position, and the top of the threaded column 4 and the bottom of the U-mouth frame 504 are in contact with each other;
[0048] A double-rod cylinder 506 is installed on the inner wall of one side of the U-mouth frame 504, and a flat plate 507 is fixed to the top of the piston rod of the double-rod cylinder 506. The needle head is a threaded detection needle 508 threadedly assembled on one side of the inner side of the flat plate 507. A multi-column groove scraper cleaning structure 9 is provided on one side of the top of the frame 1, and a reciprocating cam push module 8 for driving the multi-column groove scraper cleaning structure 9 to move is installed on the top of the frame 1 on one side of the multi-column groove scraper cleaning structure 9. The modified asphalt adhered to the outer peripheral surface of the threaded detection needle 508 is scraped off by the multi-column groove scraper cleaning structure 9. The threaded detection needle 508 serves as the needle head of the double-needle self-falling detection module 5. The threaded detection needle 508 is fixed on the flat plate 507 by the fixing form of the threaded groove and the nut. At this time, the central axis of the threaded detection needle 508 is parallel to the central axis of the storage barrel 7;
[0049] When the pulley drive unit 10 drives the turntable 2 to rotate and separates the double-needle self-falling detection module 5 from the threaded column 4, the U-mouth frame 504 no longer contacts the top of the threaded column 4 until the U-mouth frame 504 rotates to the position of the photoelectric switch 213, and the turntable 2 stops rotating. Then, the load-bearing frame 505, the weight, the U-mouth frame 504, the slide bar 503, and the threaded detection needle 508 move downward under the action of their own weight. At this time, the threaded detection needle 508 will gradually penetrate into the modified asphalt in the storage barrel 7 until the bottom plane of the flat plate 507 contacts the top plane of the storage barrel 7, indicating that the threaded detection needle 508 has fallen to the end point. The staff can record the falling time. The actual working state of the asphalt is simulated by the falling of the heavy object to reflect the consistency and viscosity of the asphalt, and then evaluate its construction performance.
[0050] The pulley drive unit 10 can provide uniform and smooth rotation, so that each U-shaped frame 504 on the turntable 2 can be separated from the threaded column 4 at the same time, so as to help each double-needle self-falling detection module 5 to smoothly enter the test position.
[0051] Embodiment 3, based on embodiment 2, Fig.10 , Fig.11 and Fig.12 It is given that when the pulley driving unit 10 drives the reciprocating cam push module 8 and the multi-column groove scraping cleaning structure 9 to clean and maintain the needle head of the double-needle self-falling detection module 5, the staff needs to unscrew the threaded column 4 from the inner wall of the outer disc sleeve 3, and remove the photoelectric switch 1 12 and the photoelectric switch 2 13 to avoid the double-needle self-falling detection module 5 from colliding with the threaded column 4 when the turntable 2 and the double-needle self-falling detection module 5 rotate;
[0052] The staff can also change the installation and detection positions of the photoelectric switch 1 12 and the photoelectric switch 2 13 through the tooling to further avoid the blocking effect caused by the photoelectric switch 1 12 and the photoelectric switch 2 13 during needle maintenance;
[0053] The multi-column slot scraper cleaning structure 9 includes a C-shaped crossbeam 901 fixed on the front and rear sides of the top of the frame 1, a tensioner 902 installed on the outer wall of the side away from the two C-shaped crossbeams 901, and a crossbar 903 fixed at one end of the tensioner 902, and a U-shaped platform 904 is fixed on one end of the surface of the crossbar 903 for being pulled and pulled by the reciprocating cam push module 8 to slide, and the extension line of the central axis of the crossbar 903 is perpendicular to the extension line of the central axis of the threaded detection needle 508;
[0054] A support platform 905 is fixed at the top of the U-shaped platform 904, and a groove 906 is provided at the top of the support platform 905. A scraper 907 is fixed at one end of the groove 906. The reciprocating cam push module 8 drives the U-shaped platform 904, the support platform 905, and the scraper 907 to slide back and forth in the extension direction of the cross bar 903 and enables the scraper 907 to scrape off the modified asphalt adhered to the threaded detection needle 508;
[0055] When the pulley drive unit 10 drives the reciprocating cam pushing module 8 to work, the reciprocating cam pushing module 8 forces the U-shaped platform 904 and the support platform 905 to slide back and forth in the extension direction of the central axis of the cross bar 903, and the staff removes the threaded detection needle 508 from the flat plate 507, and puts the threaded detection needle 508 in the groove 906, and the scraper 907 contacts the outer wall surface of the threaded detection needle 508. Since the scraper 907 continuously slides back and forth and contacts the threaded detection needle 508, the modified asphalt in the contact area can be scraped off by the scraper 907. In this process, the staff manually rotates and changes the contact area between the threaded detection needle 508 and the scraper 907 until the threaded detection needle 508 is cleaned, so as to adjust according to the different types of modified asphalt samples, to ensure that whether it is a more viscous asphalt sample or a more fluid asphalt sample, the device can effectively clean it and ensure the adequacy of the cleaning;
[0056] The reciprocating cam push module 8 comprises a secondary shaft 801 rotatably mounted on one side of the top of the frame 1, a disc cam 802 fixed on the top of the secondary shaft 801, and a vertical shaft 803 rotatably mounted on the other side of the top of the frame 1. A main connecting plate 804 and a secondary connecting plate 805 are respectively fixed on both ends of the surface of the vertical shaft 803. A roller 806 is rotatably mounted on one end of the main connecting plate 804. The roller 806 is located in the groove of the disc cam 802. A T-shaped slide 808 is installed on the side sliding, the top of the T-shaped slide 808 is bolted to the outer wall of one side of the U-shaped platform 904, the top of the frame 1 on one side of the T-shaped slide 808 is hinged with a swing arm 809, one end of the swing arm 809 is movably connected to one end of the T-shaped slide 808, one side of the bottom end of the secondary connecting plate 805 is hinged with a pitch adjusting rod 807, and one end of the pitch adjusting rod 807 away from the secondary connecting plate 805 is hinged to the bottom end of the swing arm 809;
[0057] When the reciprocating cam push module 8 is working, the secondary shaft 801 and the disc cam 802 are driven to rotate by the pulley drive unit 10. Since the roller 806 is located in the groove of the disc cam 802, the disc cam 802 will force the main connecting plate 804 to reciprocate when it rotates, that is, the vertical shaft 803 rotates forward and backward. At this time, the secondary connecting plate 805 will force the return swing arm 809 to further reciprocate through the pitch adjustment rod 807. Since the end of the return swing arm 809 is movably connected to the T-shaped slide 808, the T The T-shaped slide 808 will move back and forth under the drive of the swing arm 809, and the U-shaped stage 904 will be moved by the T-shaped slide 808. The pushing action of the reciprocating cam pushing module 8 is continuous, and the cooperation with the multi-column groove scraping cleaning structure 9 ensures that no excessive asphalt material remains on the surface of the threaded detection needle 508, thereby avoiding interference with the next test. After each test, the device can quickly complete the cleaning process and enter the next round of testing, saving the time required for manual cleaning.
[0058] The pitch-adjusting rod 807 is composed of a U-shaped plate, a fisheye connecting rod 1 installed on the outer wall of one side of the U-shaped plate, and a fisheye connecting rod 2 installed on the outer wall of the other side of the U-shaped plate. One end of the fisheye connecting rod 1 is hinged to the bottom end of the swing arm 809, and one end of the fisheye connecting rod 2 is hinged to the bottom end of the auxiliary connecting plate 805.
[0059] The pulley drive unit 10 includes a casing 1001 fixed at the bottom of the frame 1, a reduction motor 1002 installed inside the casing 1001, and a main shaft 1003 fixed at the bottom end of the turntable 2, a pulley transmission structure 1 1004 is arranged between the output shaft of the reduction motor 1002 and the main shaft 1003, and a pulley transmission structure 2 1005 is arranged between the main shaft 1003 and the secondary shaft 801. When the pulley drive unit 10 is working, the reduction motor 1002 drives the main shaft 1003 and the turntable 2 to rotate through the pulley transmission structure 1 1004, and at the same time, the main shaft 1003 drives the secondary shaft 801 to rotate through the pulley transmission structure 2 1005. The pulley drive unit 10 ensures the smooth operation of the reciprocating cam pushing module 8 and the multi-column groove scraper cleaning structure 9 through precise power output, and enables each component to complete the work smoothly according to the set steps and timing.
[0060] Before the consistency test of modified asphalt is carried out in the embodiment of the present application, the staff needs to prepare and configure the device to ensure that the multiple storage barrels 7 on the turntable 2 have been correctly placed through the chuck 6, and the asphalt sample in each storage barrel 7 has been prepared. The samples in each storage barrel 7 need to be from the same batch and are evenly filled to ensure the accuracy of the test results. Then check whether each double-needle self-falling detection module 5 is in a stable support and ready-to-work state, the needle head is clean and not damaged, check whether the non-rotating outer disk sleeve 3 is firmly installed, and ensure that the threaded column 4 on the inner wall of the outer disk sleeve 3 is not loose. Finally, the staff checks the pulley Whether the pulley of the driving unit 10 is installed in place, ensure that the motor controller 11 can control the rotation speed and direction of the turntable 2 according to the preset working mode. At this time, the motor controller 11 is set to a suitable working mode to achieve the smooth rotation of the turntable 2; the staff installs weights of different weights on each double-needle self-falling detection module 5. By equipping weights of different weights, the needle penetration performance of the same batch of modified asphalt in different environments is simulated to ensure that the test results are more accurate. Due to the use of multi-station synchronous detection, each storage barrel 7 can start the test at the same time; when the device is ready, the staff starts the test, and the staff The operator operates the motor controller 11, and the pulley drive unit 10 starts to work, driving the pulley to rotate the turntable 2. As the turntable 2 rotates, the photoelectric switch 1 12 will not detect the position signal, and the photoelectric switch 2 13 will detect the position signal of one of the double-needle self-falling detection modules 5, then the pulley drive unit 10 stops working, so that the turntable 2 is suspended, and at this time, each double-needle self-falling detection module 5 is separated from the threaded column 4. Since the double-needle self-falling detection module 5 cannot be supported, the double-needle self-falling detection module 5 will automatically fall into the modified asphalt sample in the storage barrel 7 according to the weight of the added weight, and start to test the needle penetration of the modified asphalt. After the head falls, the needle will gradually enter the asphalt sample until the needle of the double-needle self-falling detection module 5 falls to the end position; after the needle of the double-needle self-falling detection module 5 moves down to the end point, the staff uses a timer to record once until each double-needle self-falling detection module 5 completes the time recording. At this time, a time difference will be generated between the double-needle self-falling detection modules 5 equipped with different weights of Mafa, so as to analyze the needle penetration performance of the modified asphalt under different weights and equal depths according to the test results of the same sample. By analyzing the needle penetration test results under different weights, the staff judges the adaptability of the same type of modified asphalt under different construction environments;After the test, the staff cleans and maintains the needle head on the double needle self-falling detection module 5. At this time, the needle head is removed from the double needle self-falling detection module 5, and the needle head is placed at the multi-column groove scraper cleaning structure 9. The reciprocating cam push module 8 is driven by the pulley driving unit 10 to work, and the reciprocating cam push module 8 makes the multi-column groove scraper cleaning structure 9 move back and forth, and the modified asphalt on the surface of the needle head is scraped off by the multi-column groove scraper cleaning structure 9. During the scraping process, the staff rotates the needle head to change the contact position between the needle head and the multi-column groove scraper cleaning structure 9, thereby reducing the adhesion of the modified asphalt, so that the needle head quickly enters the next modified asphalt test. When the entire test process is completed, the multi-column groove scraper cleaning structure 9 can be cleaned at the same time. ;
[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A modified asphalt consistency detection device, characterized in that: include: A frame (1), a turntable (2) is rotatably mounted on one side of the top of the frame (1), and at least four annular double-needle self-falling detection modules (5) are mounted at an edge position of the top of the turntable (2) at equal intervals, two needle heads are mounted on the movable end of the double-needle self-falling detection module (5), a chuck (6) is fixed on the top of the turntable (2) below the two needle heads, and a storage barrel (7) is mounted on the top of the chuck (6), and each storage barrel (7) contains the same modified asphalt sample, and a photoelectric switch 1 (12) and a photoelectric switch 2 (13) are mounted on one side of the top of the frame (1), and the photoelectric switch 1 (12) and the photoelectric switch 2 (13) are respectively used to detect the starting point and the end point of the revolution of the same double-needle self-falling detection module (5); An outer disc sleeve (3) is arranged above the top edge of the turntable (2); a plurality of threaded columns (4) for supporting a double-needle self-falling detection module (5) are detachably mounted on the inner wall of the outer disc sleeve (3); a pulley drive unit (10) for driving the turntable (2) to rotate and forcing the double-needle self-falling detection module (5) to separate from the threaded columns (4) is mounted at the bottom of the frame (1); after the double-needle self-falling detection module (5) and the threaded columns (4) are separated, the needle head penetrates into the modified asphalt sample in the storage barrel (7) under the action of gravity; a motor controller (11) is mounted on one side of the surface of the frame (1); the output end of the motor controller (11) is electrically connected to the input end of the pulley drive unit (10).
2. A modified asphalt consistency detection device according to claim 1, characterized in that: A plurality of internally threaded convex tubes (301) equal in number to the number of the double-needle self-falling detection modules (5) are integrally formed on the inner wall of the outer disc sleeve (3); the bottom end of the threaded column (4) extends into the interior of the internally threaded convex tube (301) and is threadably matched with the internally threaded convex tube (301); a blocking piece (401) is integrally formed on one end of the surface of the threaded column (4).
3. A modified asphalt consistency detection device according to claim 2, characterized in that: The double-needle self-falling detection module (5) comprises two support rods (501) fixed at the top of the turntable (2), a top plate (502) fixed at the top of the two support rods (501), and a slide rod (503) slidably installed at the inner corner position of the top plate (502), a U-shaped frame (504) is fixed at the top of the slide rod (503), and a load-bearing frame (505) for holding weights is installed at the top of the U-shaped frame (504), and when the turntable (2) is in the initial position, the top of the threaded column (4) and the bottom of the U-shaped frame (504) are in contact with each other.
4. A modified asphalt consistency detection device according to claim 3, characterized in that: A double-rod cylinder (506) is installed on the inner wall of one side of the U-mouth frame (504), and a flat plate (507) is fixed to the top of the piston rod of the double-rod cylinder (506), and the needle head is a threaded detection needle (508) threadedly assembled on one side of the inner side of the flat plate (507). A multi-column groove scraper cleaning structure (9) is provided on one side of the top of the frame (1), and a reciprocating cam push module (8) for driving the multi-column groove scraper cleaning structure (9) to move is installed on the top of the frame (1) on one side of the multi-column groove scraper cleaning structure (9), and the modified asphalt adhered to the outer peripheral surface of the threaded detection needle (508) is scraped off by the multi-column groove scraper cleaning structure (9).
5. A modified asphalt consistency detection device according to claim 4, characterized in that: The multi-column groove scraper cleaning structure (9) comprises a C-shaped crossbeam (901) fixed on the front and rear sides of the top of the frame (1), a tensioner (902) installed on the outer wall of the side away from the two C-shaped crossbeams (901), and a cross bar (903) fixed at one end of the tensioner (902), a U-shaped platform (904) for sliding by being pulled by the reciprocating cam push module (8) is fixed on one end of the surface of the cross bar (903), and the extension line of the central axis of the cross bar (903) is perpendicular to the extension line of the central axis of the threaded detection needle (508).
6. A modified asphalt consistency detection device according to claim 5, characterized in that: A support platform (905) is fixed at the top of the U-shaped platform (904), and a groove (906) is provided at the top of the support platform (905). A scraper (907) is fixed at one end inside the groove (906). The reciprocating cam push module (8) drives the U-shaped platform (904), the support platform (905), and the scraper (907) to slide back and forth in the extension direction of the cross bar (903) and enables the scraper (907) to scrape off the modified asphalt adhered to the threaded detection needle (508).
7. A modified asphalt consistency detection device according to claim 6, characterized in that: The reciprocating cam push module (8) comprises a secondary shaft (801) rotatably mounted on one side of the top of the frame (1), a disc cam (802) fixed at the top of the secondary shaft (801), and a vertical shaft (803) rotatably mounted on the other side of the top of the frame (1), a main connecting plate (804) and a secondary connecting plate (805) are respectively fixed at both ends of the surface of the vertical shaft (803), a roller (806) is rotatably mounted on one end of the main connecting plate (804), and the roller (806) is located in the groove of the disc cam (802), and the frame (1) A T-shaped slide (808) is slidably mounted on one side of the top end, the top end of the T-shaped slide (808) is bolted to an outer wall of one side of the U-shaped platform (904), a swing arm (809) is hinged to the top end of the frame (1) on one side of the T-shaped slide (808), one end of the swing arm (809) is movably connected to one end of the T-shaped slide (808), a pitch adjusting rod (807) is hinged to one side of the bottom end of the secondary connecting plate (805), and one end of the pitch adjusting rod (807) away from the secondary connecting plate (805) is hinged to the bottom end of the swing arm (809).
8. A modified asphalt consistency detection device according to claim 7, characterized in that: The pitch-adjusting rod (807) is composed of a U-shaped plate, a fisheye connecting rod 1 installed on the outer wall of one side of the U-shaped plate, and a fisheye connecting rod 2 installed on the outer wall of the other side of the U-shaped plate. One end of the fisheye connecting rod 1 is hinged to the bottom end of the swing arm (809), and one end of the fisheye connecting rod 2 is hinged to the bottom end of the auxiliary connecting plate (805).
9. A modified asphalt consistency detection device according to claim 7, characterized in that: The pulley drive unit (10) comprises a housing (1001) fixed at the bottom of a frame (1), a reduction motor (1002) installed inside the housing (1001), and a main shaft (1003) fixed at the bottom end of a turntable (2); a first pulley transmission structure (1004) is arranged between the output shaft of the reduction motor (1002) and the main shaft (1003); and a second pulley transmission structure (1005) is arranged between the main shaft (1003) and a secondary shaft (801).
10. A method for detecting the consistency of modified asphalt, comprising the modified asphalt consistency detection device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S101: The staff needs to prepare and configure the device, ensuring that the multiple storage barrels (7) on the turntable (2) have been correctly placed through the chuck (6), and the asphalt sample in each storage barrel (7) has been prepared. The samples in each storage barrel (7) need to be from the same batch and are evenly filled to ensure the accuracy of the test results; S102: installing weights of different weights on each double-needle self-falling type detection module (5), and simulating the needle penetration performance of the same batch of modified asphalt under different environments by equipping the weights of different weights; S103: When the device is ready, the staff starts the test. The staff operates the motor controller (11), and the pulley drive unit (10) starts to work, driving the pulley to rotate the turntable (2). As the turntable (2) rotates, the photoelectric switch 1 (12) will not detect the position signal, while the photoelectric switch 2 (13) will detect the position signal of one of the double-needle self-falling detection modules (5), and the pulley drive unit (10) will stop working. At this time, each double-needle self-falling detection module (5) is separated from the threaded column (4). Since the double-needle self-falling detection module (5) cannot be supported, the double-needle self-falling detection module (5) will automatically fall into the modified asphalt sample in the storage barrel (7) according to the weight of the added weight, and start testing the needle penetration of the modified asphalt; S104: After the needle head of the module falls, the needle head gradually enters the asphalt sample until the needle head of the double-needle self-falling detection module (5) falls to the end position; after the needle head of the double-needle self-falling detection module (5) descends to the end point, the staff uses a timer to record once until each double-needle self-falling detection module (5) completes the time recording; S105: A time difference will be generated between the double-needle self-falling detection modules (5) equipped with different weights of Mafa, so as to analyze the needle penetration performance of the modified asphalt under different weights and equal depths based on the test results of the same sample. By analyzing the needle penetration test results under different weights, the staff can judge the adaptability of the same type of modified asphalt under different construction environments.