High-precision asphalt penetration testing method

Abstract

The invention discloses a high-precision asphalt penetration testing method, and relates to the technical field of asphalt penetration measurement, an asphalt penetration measuring device comprises a measuring table, the measuring table is connected with a measuring mechanism, the measuring table is rotatably connected with a rotating disc, the measuring table is connected with a driving assembly used for driving the rotating disc to rotate, and the driving assembly is used for driving the rotating disc to rotate. The device comprises a rotating disc, the rotating disc is connected with a heat preservation vessel, the heat preservation vessel is located at the eccentric position of the rotating disc, a containing vessel is arranged in the heat preservation vessel, and the heat preservation vessel is connected with a clamping assembly used for clamping the containing vessel. The rotatable turntable is arranged on the measuring table, and the heat preservation vessel is arranged at the eccentric position of the turntable, so that the placement vessel can change the position along with the rotation of the turntable, the penetration measurement of different positions of asphalt is facilitated, and the comprehensiveness and accuracy of the test are improved. Meanwhile, the arrangement of the clamping assembly can effectively fix the placing vessel, so that the stability of the placing vessel in the test process is ensured.

Description

Technical Field

[0001] This application relates to the technical field of asphalt penetration measurement, and particularly to a method for high-precision asphalt penetration testing. Background Art

[0002] An asphalt penetration measuring instrument is a dedicated instrument for measuring the penetration of asphalt. Penetration is an important indicator for measuring the consistency or softness of asphalt.

[0003] The existing Chinese patent with the publication number CN217277659U discloses an adjustable asphalt penetration tester. The asphalt placement dish is placed inside the heat preservation dish, and the asphalt is placed inside the asphalt placement dish. The driving mechanism can drive two clamping plates to approach each other, so as to drive two limit frames to press the asphalt placement dish through the sliding rod. The asphalt placement dish is limited in the vertical direction through the limit component, so as to ensure the stability of the asphalt placement dish. The asphalt can be measured through the tester body. Compared with the above-mentioned prior art, this scheme is convenient for limiting the asphalt placement dish. However, the asphalt placement dish is not convenient to move compared with the tester body, and the tests cannot be carried out on various positions of the asphalt, which needs to be improved. Summary of the Invention

[0004] The purpose of this application is to provide a method for high-precision asphalt penetration testing, which is convenient for testing various positions of asphalt.

[0005] A method for high-precision asphalt penetration testing provided by this application adopts the following technical scheme: It is mainly completed in cooperation with an asphalt penetration measuring device, including the following steps:

[0006] S1. Asphalt preparation: Take an appropriate amount of asphalt as a sample, heat the asphalt to a flowable state by a suitable heating method, and slowly pour the heated asphalt into the asphalt penetration measuring device;

[0007] S2. Asphalt cooling: Cool the asphalt poured into the asphalt penetration measuring device at room temperature for a certain time to make the asphalt reach the test temperature and keep the temperature uniform and stable;

[0008] S3. Asphalt testing: Perform asphalt penetration testing on the asphalt through the asphalt penetration measuring device;

[0009] S4. Calculation and processing: Process the penetration data obtained from multiple tests, and take the average value as the final test result. If the test result is within the error threshold compared with the standard deviation, the test data has good reliability.

[0010] The asphalt penetration measuring device includes a measuring table, which is connected with a measuring mechanism. The measuring table is rotatably connected with a turntable, and the measuring table is connected with a driving component for driving the turntable to rotate. The turntable is connected with a heat preservation dish, and the heat preservation dish is located at the eccentric position of the turntable. A placing dish is arranged in the heat preservation dish, and the heat preservation dish is connected with a clamping component for clamping the placing dish.

[0011] By adopting the above technical scheme, by arranging a rotatable turntable on the measuring table and setting the heat preservation dish at the eccentric position of the turntable, the placing dish can change its position as the turntable rotates, so as to facilitate the measurement of the penetration of different positions of the asphalt, improving the comprehensiveness and accuracy of the test. At the same time, the setting of the clamping component can effectively fix the placing dish, ensuring the stability of the placing dish during the test process and avoiding the problem that the measurement result is inaccurate due to the shaking of the placing dish.

[0012] Optionally, the driving component includes a rotating column rotatably connected to the measuring table, a passive gear connected to the rotating column, an active gear rotatably connected to the measuring table, and a first driving member for driving the active gear to rotate. The first driving member is connected to the measuring table. The active gear meshes with the passive gear. The turntable is connected to the rotating column, and the radius of the passive gear is larger than that of the active gear.

[0013] By adopting the above technical scheme, since the radius of the passive gear is larger than that of the active gear, this design utilizes the gear transmission principle to achieve the effect of speed reduction and torque increase, enabling the power provided by the first driving member to be transmitted to the turntable more smoothly, ensuring the stability of the turntable during rotation. This design not only improves the convenience of testing different positions of asphalt during the measurement process, but also effectively reduces the measurement errors caused by too fast or unstable rotation speed, enhancing the accuracy and reliability of the overall measuring device.

[0014] Optionally, the heat preservation dish is provided with a limiting convex ring, and the placing dish is matched with the inner ring of the limiting convex ring.

[0015] By adopting the above technical scheme, the placing dish is placed in the inner ring of the limiting convex ring, and the outer peripheral surface of the placing dish fits with the inner ring of the limiting convex ring. The inner ring of the limiting convex ring plays a role in restricting the horizontal movement of the placing dish, enabling the placing dish to be accurately placed in the corresponding position, facilitating the clamping component to better clamp the placing dish.

[0016] Optionally, the clamping component includes two clamping plates slidably connected in the heat preservation dish and a driving structure for driving the two clamping plates to slide towards or away from the placing dish. The driving structure is connected to the heat preservation dish.

[0017] By adopting the above technical solution, the driving structure drives the two clamping plates to slide towards the direction close to the placement dish. The clamping plates abut against the placement dish and clamp the placement dish, improving the stability of the placement dish placed in the heat preservation dish. The driving structure drives the two clamping plates to slide away from the placement plate, and the clamping plates are separated from the placement dish, facilitating the replacement of the placement dish with different asphalt.

[0018] Optionally, one side of each clamping plate close to the placement dish is in the shape of an inner arc surface.

[0019] By adopting the above technical solution, the design that one side of the clamping plate close to the placement dish is in the shape of an inner arc surface can increase the contact area between the clamping plate and the placement dish, thereby improving the stability during clamping and preventing the placement dish from shifting or shaking during the test. In addition, the design of the inner arc surface can also reduce the pressure of the clamping plate on the surface of the placement dish, preventing damage to the placement dish due to excessive clamping force and ensuring the accuracy and safety of the test process.

[0020] Optionally, the driving structure includes two connecting rods slidably connected to the turntable, a bidirectional lead screw rotatably connected to the turntable, and a second driving member for driving the bidirectional lead screw to rotate. The second driving member is connected to the turntable. Each connecting rod is threadedly connected to the bidirectional lead screw. The connecting rod abuts against the turntable. The connecting rod passes through the heat preservation dish, and the clamping plates are connected to the connecting rods one by one.

[0021] By adopting the above technical solution, the second driving member drives the bidirectional lead screw to rotate, and the two connecting rods slide towards each other or away from each other, that is, the two clamping plates slide towards each other or away from each other, thereby realizing clamping or loosening of the placement dish.

[0022] Optionally, the measuring mechanism includes a carrier plate slidably connected to the measuring table, an adjusting component for driving the carrier plate to move towards or away from the measuring table, a magnetic rod slidably connected to the carrier plate, a test needle connected to one end of the magnetic rod, an electromagnet connected to the carrier plate, and a controller connected to the measuring table. The adjusting component is connected to the measuring table. The magnetic rod is magnetically attracted to the electromagnet. The electromagnet is electrically connected to the controller. The magnetic rod is connected with a scale.

[0023] By adopting the above technical solution, the adjusting component adjusts the height of the carrier plate so that the test needle contacts the surface of the asphalt. During the test, the controller controls the electromagnet to demagnetize, and the magnetic rod and the test needle are inserted into the asphalt under the influence of gravity. The depth of the test needle inserted into the asphalt can be directly read according to the scale, thereby improving the measurement accuracy and reliability.

[0024] Optionally, the adjusting assembly includes a bracket connected to the measuring table, a rotating lead screw rotatably connected to the bracket, and a rotating part connected to one end of the rotating lead screw. The carrier plate is threadedly connected to the rotating lead screw and abuts against the bracket.

[0025] By adopting the above technical solution, the rotating part drives the rotating lead screw to rotate, so that the carrier plate slides in a direction close to or away from the measuring table, thereby facilitating the adjustment of the height of the carrier plate, that is, the height of the test needle, so that the test needle contacts the surface of the asphalt.

[0026] Optionally, the bracket is rotatably connected with a threaded rod, and the threaded rod can abut against the rotating lead screw.

[0027] By adopting the above technical solution, after the height of the carrier plate is adjusted, the threaded rod is rotated so that the threaded rod abuts against the rotating lead screw, thereby preventing the rotating lead screw from rotating during the test.

[0028] Optionally, the radius dimension of the test needle gradually decreases in a direction away from the magnetic rod.

[0029] By adopting the above technical solution, it can be ensured that the contact area gradually decreases when the test needle contacts the asphalt, thereby improving the accuracy of the measurement. This design enables the test needle to better adapt to the subtle changes on the surface of the asphalt during the insertion process, reduces the measurement error caused by the sudden change of the contact area, and further improves the reliability of the asphalt penetration measurement.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. By providing a rotatable turntable on the measuring table and arranging the heat preservation dish at the eccentric position of the turntable, the placement dish can change its position as the turntable rotates, thereby facilitating the penetration measurement of different positions of the asphalt and improving the comprehensiveness and accuracy of the test.

[0032] 2. Since the radius dimension of the passive gear is larger than that of the active gear, this design utilizes the gear transmission principle to achieve the effect of speed reduction and torque increase, enabling the power provided by the first driving member to be transmitted to the turntable more smoothly and ensuring the stability of the turntable during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is one of the overall structural schematic diagrams of the embodiment of the present application, showing the installation groove.

[0034] Figure 2 is Figure 1 the enlarged view of area A of

[0035] Figure 3It is the second overall structural schematic diagram of the embodiment of the present application, showing the placement dish.

[0036] Figure 4 It is a partial structural schematic diagram of the embodiment of the present application.

[0037] Figure 5 It is a cross-sectional view of the embodiment of the present application.

[0038] Figure 6 It is Figure 5 an enlarged view of area B of

[0039] Explanation of reference numerals: 1, measuring table; 11, turntable; 12, mounting groove; 2, driving assembly; 21, rotating column; 22, passive gear; 23, active gear; 24, first driving member; 3, heat preservation dish; 31, limiting convex ring; 4, placement dish; 5, clamping assembly; 51, clamping plate; 52, driving structure; 521, connecting rod; 522, bidirectional lead screw; 523, second driving member; 6, measuring mechanism; 61, carrier plate; 62, adjusting assembly; 621, bracket; 622, rotating lead screw; 623, rotating part; 63, magnetic rod; 64, test needle; 65, scale; 66, threaded rod. Detailed implementation manners

[0040] The following will Figure 1 - with reference to the Figure 6 drawings to further elaborate on the present application.

[0041] The embodiment of the present application discloses a method for high-precision asphalt penetration test, including the following steps:

[0042] S1. Asphalt preparation: Take an appropriate amount of asphalt as a sample, heat the asphalt to a flowable state by a suitable heating method, and slowly pour the heated asphalt into the asphalt penetration measuring device;

[0043] S2. Asphalt cooling: Cool the asphalt poured into the asphalt penetration measuring device at room temperature for a certain time to make the asphalt reach the test temperature and maintain a uniform and stable temperature;

[0044] S3. Asphalt test: Perform an asphalt penetration test on the asphalt through the asphalt penetration measuring device;

[0045] S4. Calculation and processing: Process the penetration data obtained from multiple tests, and take the average value as the final test result. If the test result is within the error threshold range compared with the standard deviation, the test data has good reliability.

[0046] Combined with Figure 1 and Figure 2As shown in the figure, the asphalt penetration measuring device includes a measuring table 1. A turntable 11 is rotatably connected to the upper surface of the measuring table 1. The measuring table 1 is connected with a driving component 2 for driving the turntable 11 to rotate around its own axis. The measuring table 1 is provided with an installation groove 12 which penetrates through one inner wall of the measuring table 1. The driving component 2 includes a rotating column 21 rotatably connected to the measuring table 1, a passive gear 22 fixedly connected to the rotating column 21, an active gear 23 rotatably connected to the measuring table 1, and a first driving member 24 for driving the active gear 23 to rotate. The first driving member 24 is fixedly connected to the inner wall of the installation groove 12. Both the active gear 23 and the passive gear 22 are located in the installation groove 12. The measuring table 1 is fixedly connected with a controller (not shown in the drawing). The signal output end of the controller is connected to the signal input end of the first driving member 24. The first driving member 24 is a motor. One side of the active gear 23 close to the first driving member 24 is fixedly connected to the output end of the first driving member 24. The active gear 23 meshes with the passive gear 22. The radius of the active gear 23 is larger than the radius of the passive gear 22.

[0047] Combined with Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown in the figure, a heat preservation dish 3 is fixedly connected to the upper surface of the turntable 11. The heat preservation dish 3 is located at the eccentric position of the turntable 11. The axis of the heat preservation dish 3 is different from the axis of the turntable 11. A placing dish 4 is installed in the heat preservation dish 3. A limiting convex ring 31 is fixedly connected to the bottom wall of the heat preservation dish 3. The axis of the limiting convex ring 31 is the same as the axis of the heat preservation dish 3. The placing dish 4 is installed in the limiting convex ring 31. The outer surface of the placing dish 4 is attached to the inner ring of the limiting convex ring 31.

[0048] Combined with Figure 4 , Figure 5 and Figure 6 As shown in the figure, the turntable 11 is connected with a clamping component 5. The clamping component 5 includes two clamping plates 51 which are relatively slidably connected in the heat preservation dish 3 and a driving structure 52 connected to the turntable 11. The placing dish 4 is located between the two clamping plates 51. One side of each clamping plate 51 close to the placing dish 4 is in an inner arc shape. The driving structure 52 includes two connecting rods 521 which are relatively slidably connected to the turntable 11, a bidirectional lead screw 522 rotatably connected to the turntable 11, and a second driving member 523 fixedly connected to the turntable 11. The second driving member 523 is a motor. The signal output end of the controller is connected to the signal input end of the second driving member 523. One end of the bidirectional lead screw 522 close to the second driving member 523 is fixedly connected to the output end of the second driving member 523. Both of the two connecting rods 521 are threadedly connected to the bidirectional lead screw 522. One side of the connecting rod 521 abuts against the turntable 11. Both of the two connecting rods 521 pass through the heat preservation dish 3. The connecting rods 521 correspond to the clamping plates 51 one by one. The connecting rods 521 are fixedly connected to the clamping plates 51.

[0049] Combined with Figure 5 and Figure 6 As shown, the measuring table 1 is connected with a measuring mechanism 6. The measuring mechanism 6 includes a carrier plate 61 slidably connected to the measuring table 1, an adjusting component 62 connected to the measuring table 1, a magnetic rod 63 slidably connected to the carrier plate 61, a test needle 64 fixedly connected to one end of the magnetic rod 63 close to the measuring table 1, and an electromagnet (not shown in the drawing) fixedly connected to the carrier plate 61. The magnetic rod 63 is made of iron. The carrier plate 61 is provided with a through hole for the magnetic rod 63 to pass through. The electromagnet is fixedly connected to the inner wall of the through hole. The electromagnet is magnetically attracted to the magnetic rod 63, and the electromagnet is electrically connected to the controller. The radius dimension of the test needle 64 gradually decreases in the direction away from the magnetic rod 63. A scale 65 is fixedly connected to one end of the magnetic rod 63 away from the test needle 64, and the scale 65 passes through the carrier plate 61.

[0050] As Figure 5 shown, the adjusting component 62 includes a bracket 621 fixedly connected to the test bench, a rotating lead screw 622 rotatably connected to the bracket 621, and a rotating part 623 fixedly connected to one end of the rotating lead screw 622 away from the test bench. The rotating part 623 includes a disc fixedly connected to one end of the rotating lead screw 622 away from the test bench and a driving rod fixedly connected to the side of the disc away from the rotating lead screw 622. The driving rod is located at the eccentric position of the disc. The carrier plate 61 is threadedly connected to the rotating lead screw 622, and one side of the carrier plate 61 abuts against the bracket 621. A threaded rod 66 is threadedly connected to the side of the bracket 621 away from the rotating lead screw 622, and the threaded rod 66 can abut against the rotating lead screw 622.

[0051] In the embodiment of the present application, the implementation principle of the asphalt penetration measuring device is as follows: The placing dish 4 is placed in the limiting convex ring 31, and the second driving member 523 drives the bidirectional lead screw 522 to rotate, so that the two clamping plates 51 clamp the placing dish 4. The first driving member 24 drives the driving gear 23 to rotate, and the driving gear 23 drives the driven gear 22 to rotate. Both the heat preservation dish 3 and the placing dish 4 rotate around the axis of the turntable 11, so that the test needle 64 corresponds to different positions of the asphalt. The controller controls the electromagnet to demagnetize, and the magnetic rod 63 and the test needle 64 are inserted into the asphalt under the influence of gravity. The depth of the test needle 64 piercing into the asphalt can be directly read according to the scale 65. After multiple tests, the test results are improved.

[0052] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A high-precision asphalt penetration test method, mainly completed by an asphalt penetration measuring device, characterized in that: The following steps are involved: S1. Asphalt preparation: Take an appropriate amount of asphalt as a sample, heat the asphalt to a flowable state using a suitable heating method, and slowly pour the heated asphalt into the asphalt penetration measuring device; S2, asphalt cooling: cooling the asphalt poured into the asphalt penetration measuring device for a certain period of time at room temperature, so that the asphalt reaches the test temperature and keeps the temperature uniform and stable; S3. Asphalt test: Performing a penetration test on asphalt using the asphalt penetration measuring device; S4. Calculation processing: Process the penetration data obtained from multiple tests, and take the average value as the final test result. If the test result is within the error threshold range compared with the standard deviation, the test data has good reliability; The asphalt penetration measuring device includes a measuring platform, the measuring platform is connected to a measuring mechanism, the measuring platform is rotatably connected to a turntable, the measuring platform is connected to a driving assembly for driving the turntable to rotate, the turntable is connected to an insulation dish, the insulation dish is located at an eccentric position of the turntable, a placing dish is arranged inside the insulation dish, and the insulation dish is connected to a clamping assembly for clamping the placing dish.

2. A method for high-precision asphalt penetration testing according to claim 1, characterized in that: The driving assembly includes a rotating column rotatably connected to the measuring platform, a passive gear connected to the rotating column, a driving gear rotatably connected to the measuring platform, and a first driving member for driving the driving gear to rotate, the first driving member is connected to the measuring platform, the driving gear is meshed with the passive gear, the turntable is connected to the rotating column, and the radius of the passive gear is larger than the radius of the driving gear.

3. A method for high-precision asphalt penetration testing according to claim 1, characterized in that: The heat-insulating dish is provided with a limiting convex ring, and the placing dish cooperates with the inner ring of the limiting convex ring.

4. A method for high-precision asphalt penetration testing according to claim 1, characterized in that: The clamping assembly comprises two clamping plates slidably connected to the thermal insulation dish and a driving structure for driving the two clamping plates to slide toward or away from the placement dish, wherein the driving structure is connected to the thermal insulation dish.

5. A method for high-precision asphalt penetration testing according to claim 4, characterized in that: A side of each clamping plate close to the placing dish is in an inner arc shape.

6. A method for high-precision asphalt penetration testing according to claim 4, characterized in that: The driving structure includes two connecting rods slidably connected to the turntable, a bidirectional screw rod rotatably connected to the turntable, and a second driving member for driving the bidirectional screw rod to rotate, the second driving member is connected to the turntable, each connecting rod is threadedly connected to the bidirectional screw rod, the connecting rod abuts against the turntable, the connecting rod passes through the thermal insulation dish, and the clamping plate is connected to the connecting rod one by one.

7. A method for high-precision asphalt penetration testing according to claim 1, characterized in that: The measuring mechanism includes a carrier plate slidably connected to the measuring platform, an adjustment component for driving the carrier plate to move closer to or away from the measuring platform, a magnetic rod slidably connected to the carrier plate, a test needle connected to one end of the magnetic rod, an electromagnet connected to the carrier plate and a controller connected to the measuring platform, the adjustment component is connected to the measuring platform, the magnetic rod is magnetically attracted to the electromagnet, the electromagnet is electrically connected to the controller, and the magnetic rod is connected to a ruler.

8. A method for high-precision asphalt penetration testing according to claim 7, characterized in that: The adjustment assembly includes a bracket connected to the measuring platform, a rotating screw rotatably connected to the bracket, and a rotating part connected to one end of the rotating screw. The carrier plate is threadedly connected to the rotating screw, and the carrier plate abuts against the bracket.

9. A method for high-precision asphalt penetration testing according to claim 8, characterized in that: The bracket is rotatably connected with a threaded rod, and the threaded rod can abut against the rotating screw rod.

10. A method for high-precision asphalt penetration testing according to claim 7, characterized in that: The radius of the test needle decreases step by step in a direction away from the magnetic rod.

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