Asphalt penetrometer
By using the L-shaped baffle and servo motor in the asphalt needle insertion instrument, the needle is avoided from inserting asphalt, the detection accuracy is improved, and the standard needle replacement is simplified by using arc grooves and movable buckles, the errors and the in-depth analysis of the existing technology are solved. The cumbersome problems have achieved efficient asphalt needle insertion experiments.
Patent Information
- Application Number
- CN202420756997.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-12
AI Technical Summary
In the existing asphalt needle insertion experiment, the needle is easily inserted directly into the asphalt when it drops, resulting in errors in the detection result, and the steps for replacing standard needles are cumbersome and inconvenient.
A bituminous needle insertion meter is designed, using the L-shaped baffle and the standard needle to achieve the needle close to the asphalt surface through the lifting rod and the servo motor, and avoid the needle insertion into the asphalt through the tie rod and the limit stop, improving the Detection accuracy; at the same time, the arc-shaped grooves and movable buckles are used to achieve convenient replacement and cleaning of standard needles.
The detection accuracy of asphalt needle inlet experiments is improved, the replacement and cleaning process of standard needles is simplified, and errors and cumbersome steps are avoided.
Smart Images
Figure CN222212560U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an asphalt penetration test, in particular to an asphalt penetration instrument. Background Art
[0002] Asphalt is a dark brown complex mixture composed of hydrocarbons of different molecular weights and their non-metallic derivatives. It is a kind of high-viscosity organic liquid, mostly in the form of liquid or semi-solid petroleum. The surface is black and it is soluble in carbon disulfide and carbon tetrachloride. Asphalt is an organic gelling material that is waterproof, moisture-proof and anti-corrosive. Asphalt can be mainly divided into three types: coal tar asphalt, petroleum asphalt and natural asphalt: among them, coal tar asphalt is a by-product of coking. Petroleum asphalt is the residue after crude oil distillation. Natural asphalt is stored underground, and some form mineral layers or accumulate on the surface of the earth's crust. Asphalt is mainly used in industries such as coatings, plastics, rubber, and road paving;
[0003] Asphalt penetration is one of the main quality indicators of asphalt. It is an indicator of the hardness and consistency of asphalt, its ability to resist shear damage, and reflects the relative viscosity of asphalt under certain conditions. At 25°C and 5 seconds, under a load of 100 grams, the depth of a standard cone vertically penetrating into an asphalt sample is the penetration, measured in 1 / 10 mm.
[0004] However, in the prior art, since the asphalt penetration test requires the needle to be aligned with the surface of the asphalt first, the needle is likely to be directly inserted into the asphalt when it descends, resulting in errors in the test results, and the standard needle replacement procedure is cumbersome and inconvenient. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide an asphalt needle penetration instrument. Since the asphalt needle penetration test requires the needle to be aligned with the surface of the asphalt first, the needle is easily inserted directly into the asphalt when it descends, resulting in errors in the test results, and the standard needle replacement steps are cumbersome and inconvenient.
[0006] In order to solve the above technical problems, the technical solution of the utility model is:
[0007] An asphalt penetration meter comprises a base, a lifting rod is fixedly installed on the top of the base, a lifting platform is slidably installed on the outer surface of the lifting rod, lifting grooves are provided on both sides of the lifting platform, L-shaped baffles are slidably installed on the positions near the lifting grooves on both sides of the lifting platform, limit blocks are movably installed inside the lifting grooves, a pull rod is fixedly installed on one end of the limit block, the pull rod movably passes through the interior of the lifting platform and extends to the front side position of the lifting platform, a standard needle is movably installed on the bottom end of the lifting platform, and the bottom end surface of the L-shaped baffle and the needle tip position of the standard needle are located on the same horizontal plane.
[0008] Preferably, a heat preservation barrel is rotatably mounted on the top of the base, an asphalt barrel is movably inserted inside the heat preservation barrel, a servo motor is fixedly mounted inside the base, and the output end of the servo motor is connected to the center position of the bottom end of the heat preservation barrel through a coupling.
[0009] Preferably, spring grooves are provided inside the lifting platform near the pull rod, and limit plates are fixedly installed on the outer surface of the pull rod. The limit plates are slidably inserted into the spring grooves, and compression springs are movably installed between the limit plates and the spring grooves.
[0010] Preferably, a snap-fit buckle is fixedly installed on the top of each of the L-shaped baffles, and each of the snap-fit buckles is slidably inserted into the interior of the lifting slot, and the surface of the snap-fit buckle fits with the surface of the limit stopper.
[0011] Preferably, two T-slots are provided on the bottom surface of the lifting platform, two T-shaped clamping plates are fixedly installed on the top of the standard needle, arc-shaped grooves are provided inside the top of the T-slots, limiting grooves are provided inside the arc-shaped grooves, movable convex buckles are slidably installed inside the limiting grooves, and extrusion springs are movably installed between the movable convex buckles and the inside of the limiting grooves, and inclined surfaces are provided on both side surfaces of the extrusion springs.
[0012] Preferably, a searchlight is movably mounted on one side of the top of the base, a level is fixedly mounted at an end angle of the top of the base, and a plurality of heating wires are provided at the bottom of the insulation barrel.
[0013] Compared with the prior art, the utility model has the following advantages:
[0014] 1. Through the cooperation of the L-shaped baffle and the standard needle, when the device is conducting the asphalt penetration test, it is necessary to first lower the lifting platform along the lifting rod so that the needle tip of the standard needle is close to the outer surface of the asphalt. When the lifting platform descends, the L-shaped baffle and the standard needle will descend at the same time. When the needle tip of the standard needle touches the surface of the asphalt, the bottom end of the L-shaped baffle will hit the surface of the asphalt barrel to stop the descent of the lifting platform, thereby preventing the needle tip of the standard needle from entering the asphalt and affecting the test results of the needle penetration, thereby improving the detection accuracy of the device. After the standard needle is flush with the surface of the asphalt, the pull rod can be pulled outward to drive the limit block to retract to the position of the spring groove, thereby releasing the limit block from limiting the snap buckle. At this time, the L-shaped baffle can be pushed upward to make the snap buckle slide upward to the top of the lifting slot. Then, the pull rod is released. The pull rod will rebound due to the elastic potential energy of the compression spring and get stuck in the lifting slot, thereby limiting the snap buckle and preventing the L-shaped baffle from falling. At this time, the L-shaped baffle no longer blocks the standard needle, and the needle penetration test can continue.
[0015] 2. By using the arc groove and movable convex buckle, when the standard needle needs to be replaced or cleaned during the experiment, the standard needle can be rotated first to make the standard needle drive the T-type clip plate to rotate inside the arc groove. At this time, the T-type clip plate will hit the inclined surface of the movable convex buckle surface, and the movable convex buckle will retract to the inside of the limit groove. Then continue to rotate the standard needle to make the T-type clip plate rotate to the position of the T-slot. At this time, the standard needle can be directly pulled out downward to complete the removal of the standard needle. When installing the standard needle, the T-type clip plate needs to be aligned with the position of the T-slot and the standard needle is inserted vertically upward. Due to the restriction of the T-slot on the T-type clip plate, the standard needle will be perpendicular to the ground when inserted to avoid the standard needle from tilting. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 It is a sectional side view of the utility model as a whole;
[0018] Figure 3 It is a cross-sectional top view of the utility model as a whole;
[0019] Figure 4 It is a partial cross-sectional front view of the standard needle position of the utility model;
[0020] Figure 5 For this utility model Figure 4 Local section top view along the AA direction.
[0021] In the figure: 1. base; 2. insulation barrel; 3. asphalt barrel; 4. level; 5. searchlight; 6. lifting rod; 7. lifting platform; 8. L-shaped baffle; 9. standard needle; 10. pull rod; 11. servo motor; 12. heating wire; 13. limit plate; 14. spring groove; 15. compression spring; 16. lifting slot; 17. snap buckle; 18. T-shaped snap plate; 19. T-shaped slot; 20. arc slot; 21. limit slot; 22. movable convex buckle; 23. limit block; 24. extrusion spring. DETAILED DESCRIPTION
[0022] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0023] like Figure 1As shown, an asphalt needle penetration meter of the utility model includes a base 1, a lifting rod 6 is fixedly installed on the top of the base 1, a lifting platform 7 is slidably installed on the outer surface of the lifting rod 6, lifting grooves 16 are provided on both sides of the lifting platform 7, L-shaped baffles 8 are slidably installed at positions near the lifting grooves 16 on both sides of the lifting platform 7, and limit blocks 23 are movably installed inside the lifting grooves 16, and a pull rod 10 is fixedly installed on one end of the limit block 23, and the pull rod 10 movably passes through the interior of the lifting platform 7 and extends to the front side position of the lifting platform 7, and a standard needle 9 is movably installed at the bottom end of the lifting platform 7, and the bottom end surface of the L-shaped baffle 8 and the needle head position of the standard needle 9 are located on the same horizontal plane.
[0024] As the preferred technical solution of this embodiment, Figure 2 As shown, a heat preservation barrel 2 is rotatably installed on the top of the base 1, and an asphalt barrel 3 is movably inserted inside the heat preservation barrel 2. A servo motor 11 is fixedly installed inside the base 1, and the output end of the servo motor 11 is connected to the center position of the bottom end of the heat preservation barrel 2 through a coupling. A searchlight 5 is movably installed on one side of the top of the base 1, and a level 4 is fixedly installed at an end angle position of the top of the base 1. A plurality of heating wires 12 are provided at the bottom end of the heat preservation barrel 2. When conducting an asphalt penetration test, the asphalt is first poured into the interior of the asphalt barrel 3, and then the asphalt barrel 3 is heated by the heating wire 12, so that the asphalt in the asphalt barrel 3 can be maintained at a suitable temperature to avoid differences in experimental results caused by temperature differences.
[0025] As the preferred technical solution of this embodiment, Figure 3 As shown, spring grooves 14 are provided inside the lifting platform 7 near the pull rod 10, and limit plates 13 are fixedly installed on the outer surface of the pull rod 10. The limit plates 13 are slidably inserted into the spring grooves 14, and compression springs 15 are movably installed between the limit plates 13 and the spring grooves 14.
[0026] In this embodiment, the top of the L-shaped baffle 8 is fixedly installed with a snap-on buckle 17, and the snap-on buckle 17 is slidably inserted into the interior of the lifting groove 16. The surface of the snap-on buckle 17 fits with the surface of the limit stopper 23. When the device is conducting an asphalt penetration test, it is necessary to first lower the lifting platform 7 along the lifting rod 6 so that the needle tip of the standard needle 9 is closely attached to the outer surface of the asphalt. When the lifting platform 7 descends, the L-shaped baffle 8 and the standard needle 9 will descend at the same time. When the needle tip of the standard needle 9 touches the surface of the asphalt, the bottom end of the L-shaped baffle 8 will hit the surface of the asphalt barrel 3, thereby stopping the descent of the lifting platform 7, thereby preventing the needle tip of the standard needle 9 from being inserted into the interior of the asphalt and affecting the penetration test. The test results are improved to improve the detection accuracy of the device. When the standard needle 9 is flush with the surface of the asphalt, the pull rod 10 can be pulled outward to make the pull rod 10 drive the limit block 23 to retract to the position of the spring groove 14, thereby releasing the limit block 23 from limiting the snap buckle 17. At this time, the L-shaped baffle 8 can be pushed upward to make the snap buckle 17 slide upward to the uppermost position of the lifting groove 16, and then the pull rod 10 is released. The pull rod 10 will rebound due to the elastic potential energy of the compression spring 15 and be stuck in the inside of the lifting groove 16, thereby limiting the snap buckle 17 and preventing the L-shaped baffle 8 from falling. At this time, the L-shaped baffle 8 no longer blocks the standard needle 9, and the needle penetration test can continue.
[0027] As the preferred technical solution of this embodiment, Figure 4 and Figure 5 As shown, two T-slots 19 are provided on the bottom surface of the lifting platform 7, and two T-shaped clamping plates 18 are fixedly installed on the top of the standard needle 9. Arc-shaped grooves 20 are provided inside the top of the T-slots 19, and limiting grooves 21 are provided inside the arc-shaped grooves 20. Movable convex buckles 22 are slidably installed inside the limiting grooves 21, and extrusion springs 24 are movably installed between the movable convex buckles 22 and the inside of the limiting grooves 21, and both side surfaces of the extrusion springs 24 are provided with inclined surfaces.
[0028] Working principle: first pour asphalt into the interior of the asphalt barrel 3, then heat the asphalt barrel 3 through the heating wire 12, so that the asphalt in the asphalt barrel 3 can be kept at a suitable temperature to avoid differences in experimental results caused by temperature differences, then lower the lifting platform 7 along the lifting rod 6 to make the needle tip of the standard needle 9 close to the outer surface of the asphalt. When the lifting platform 7 descends, the L-shaped baffle 8 and the standard needle 9 will descend at the same time. When the needle tip of the standard needle 9 touches the surface of the asphalt, the bottom end of the L-shaped baffle 8 will hit the surface of the asphalt barrel 3 to stop the lifting platform 7 from descending, thereby preventing the needle tip of the standard needle 9 from being inserted into the interior of the asphalt and affecting the experimental results of the needle penetration, thereby improving the quality of the asphalt. High detection accuracy of the device. When the standard needle 9 is flush with the surface of the asphalt, the pull rod 10 can be pulled outward to drive the limit block 23 to retract to the position of the spring groove 14, thereby releasing the limit block 23 from limiting the snap buckle 17. At this time, the L-shaped baffle 8 can be pushed upward to make the snap buckle 17 slide upward to the uppermost position of the lifting groove 16. Then, the pull rod 10 is released. The pull rod 10 will rebound due to the elastic potential energy of the compression spring 15 and be stuck in the inside of the lifting groove 16, thereby limiting the snap buckle 17 and preventing the L-shaped baffle 8 from falling. At this time, the L-shaped baffle 8 no longer blocks the standard needle 9, and the needle penetration test can continue.
[0029] After the needle penetration test is completed, when the standard needle 9 needs to be replaced or cleaned, the standard needle 9 can be rotated first, so that the standard needle 9 drives the T-shaped clip plate 18 to rotate inside the arc groove 20. At this time, the T-shaped clip plate 18 will hit the inclined surface of the surface of the movable protrusion 22, and the movable protrusion 22 will retract to the inside of the limiting groove 21. Then continue to rotate the standard needle 9 to rotate the T-shaped clip plate 18 to the position of the T-shaped slot 19. At this time, the standard needle 9 can be directly pulled out downward to complete the removal of the standard needle 9. When installing the standard needle 9, the T-shaped clip plate 18 needs to be aligned with the position of the T-shaped slot 19 and the standard needle 9 is inserted vertically upward. Due to the restriction of the T-shaped slot 19 on the T-shaped clip plate 18, the standard needle 9 will be perpendicular to the ground when inserted, avoiding the tilt of the standard needle 9.
[0030] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.
Claims
1. An asphalt penetration tester, comprising a base (1), characterized in that: A lifting rod (6) is fixedly installed on the top of the base (1), and a lifting platform (7) is slidably installed on the outer surface of the lifting rod (6). Lifting grooves (16) are provided on both sides of the lifting platform (7). L-shaped baffles (8) are slidably installed at positions close to the lifting grooves (16) on both sides of the lifting platform (7). A limit stopper (23) is movably installed inside the lifting groove (16). A pull rod (10) is fixedly installed at one end of the limit stopper (23). The pull rod (10) movably passes through the interior of the lifting platform (7) and extends to the front side of the lifting platform (7). A standard needle (9) is movably installed at the bottom end of the lifting platform (7), and the bottom end surface of the L-shaped baffle (8) and the needle head position of the standard needle (9) are located on the same horizontal plane.
2. An asphalt penetration tester according to claim 1, characterized in that: A heat preservation barrel (2) is rotatably mounted on the top of the base (1), an asphalt barrel (3) is movably inserted into the interior of the heat preservation barrel (2), a servo motor (11) is fixedly mounted inside the base (1), and an output end of the servo motor (11) is connected to the center position of the bottom end of the heat preservation barrel (2) via a coupling.
3. The asphalt penetration tester according to claim 1, characterized in that: A spring groove (14) is provided inside the lifting platform (7) near the pull rod (10), a limit plate (13) is fixedly installed on the outer surface of the pull rod (10), the limit plate (13) is slidably inserted into the spring groove (14), and a compression spring (15) is movably installed between the limit plate (13) and the spring groove (14).
4. The asphalt penetration tester according to claim 1, characterized in that: A snap-fit buckle (17) is fixedly mounted on the top of each L-shaped baffle (8), and each snap-fit buckle (17) is slidably inserted into the interior of the lifting slot (16), and the surface of the snap-fit buckle (17) is in contact with the surface of the limit stopper (23).
5. The asphalt penetration tester according to claim 1, characterized in that: The bottom surface of the lifting platform (7) is provided with two T-shaped slots (19), the top of the standard needle (9) is fixedly installed with two T-shaped clamping plates (18), the top of the T-shaped slot (19) is internally provided with an arc-shaped slot (20), the inside of the arc-shaped slot (20) is internally provided with a limit slot (21), the inside of the limit slot (21) is slidably provided with a movable convex buckle (22), and a compression spring (24) is movably installed between the movable convex buckle (22) and the inside of the limit slot (21), and both side surfaces of the compression spring (24) are provided with inclined surfaces.
6. The asphalt penetration tester according to claim 2, characterized in that: A searchlight (5) is movably mounted on one side of the top of the base (1), a level (4) is fixedly mounted at an end angle of the top of the base (1), and a plurality of heating wires (12) are disposed at the bottom of the heat preservation barrel (2).