Auxiliary device for testing penetration of asphalt

Abstract

The utility model provides a kind of auxiliary device for detecting asphalt penetration, related to asphalt testing device technical field, the auxiliary device for detecting asphalt penetration includes test bench, first scale, lifting mechanism, tester and mounting mechanism, and mounting rack is provided on test bench;First scale is set on mounting rack, and lifting end of lifting mechanism moves along the height direction of test bench, and first pointer is provided on lifting end, and first pointer points to the scale value on first scale;Tester includes test seat set on lifting end, and test seat is provided with test needle;Mounting mechanism includes first assembly and second assembly, one of first assembly and second assembly is set on lifting end, and the other is set on test seat. The penetration depth of test needle can be accurately obtained by reading the position of first pointer on first scale, the penetration depth of test needle is accurately controlled, the accuracy of testing asphalt consistency is improved, and the detection result is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of asphalt testing devices, and in particular to an auxiliary device for asphalt penetration testing. Background Technology

[0002] The asphalt penetration test is one of the fundamental methods for evaluating the consistency and hardness properties of asphalt materials. Its principle involves vertically inserting a steel needle of specified mass and size into an asphalt sample using a penetration tester under standard temperature conditions, and measuring the penetration depth, which is then used as an indicator of the asphalt's consistency. Penetration directly affects the paving performance and service life of asphalt in actual road construction.

[0003] For example, patent CN214668384U discloses an asphalt penetration testing device. This device uses a thermostat to isolate the water tank from the external environment, reducing the influence of the external environment on the water and maintaining a relatively constant water temperature, thus improving the accuracy of the asphalt penetration test. However, this device cannot accurately control the penetration depth of the test needle during use, resulting in large deviations in the test results and poor repeatability of the test data. Utility Model Content

[0004] In view of this, the present invention proposes an auxiliary device for asphalt penetration testing, which can solve the problem of inaccurate asphalt penetration test results.

[0005] The technical solution of this utility model is implemented as follows: This utility model provides an auxiliary device for asphalt penetration testing, comprising: The test bench is equipped with a mounting bracket. A first scale is mounted on the mounting bracket and extends along the height direction of the test bench; A lifting mechanism is mounted on the mounting frame. The lifting end of the lifting mechanism moves along the height direction of the test bench. A first pointer is provided on the lifting end, and the first pointer points to the scale value on the first scale. The testing apparatus includes a test base disposed at the lifting end, and a test needle is disposed on the side of the test base facing the test table; The mounting mechanism includes a first assembly and a second assembly that are detachably connected, one of which is disposed on the lifting end and the other is disposed on the test base.

[0006] Based on the above technical solutions, preferably, the bottom of the test bench is provided with at least three adjustable legs at intervals.

[0007] More preferably, the adjustable support leg is screwed into the test bench.

[0008] More preferably, a level is provided on the test bench.

[0009] Based on the above technical solutions, preferably, a limiting groove is provided in the middle of the test bench, and the limiting groove is used to place asphalt needles into the mold.

[0010] More preferably, at least two sets of limiting mechanisms are provided in the limiting groove, with each limiting mechanism spaced apart, and the limiting element of the limiting mechanism abuts against the asphalt needle entering the mold.

[0011] More preferably, the limiting mechanism includes a recessed portion formed on the side wall of the limiting groove, the limiting member is movably disposed within the recessed portion, and an elastic member is disposed between the limiting member and the recessed portion.

[0012] More preferably, the recessed portion is provided with a guide rail extending along the movement direction of the limiting member, and the limiting member is provided with a guide groove that is fitted and cooperates with the guide rail.

[0013] Based on the above technical solutions, preferably, the test bench is provided with a translation mechanism, the translation mechanism includes a first driving component and a second driving component disposed at a first movable end of the first driving component, the mounting bracket is disposed at a second movable end of the second driving component, the first movable end moves along a first direction, the second movable end moves along a second direction, and the first direction, the second direction and the height direction of the test bench are perpendicular to each other.

[0014] More preferably, the test bench is provided with a second scale, and the first movable end is provided with a second pointer, the second pointer pointing to the scale value on the second scale; the first movable end is provided with a third scale, and the second movable end is provided with a third pointer, the third pointer pointing to the scale value on the third scale.

[0015] The asphalt penetration testing auxiliary device of this invention has the following advantages over the prior art: (1) The testing instrument is driven to descend by the lifting mechanism, which in turn moves the test needle toward the direction of the asphalt needle insertion mold. The first pointer moves synchronously with the test needle and points to the first scale. By reading the position of the first pointer on the first scale, the insertion depth of the test needle can be accurately obtained, thereby achieving precise control of the insertion depth of the test needle. This can improve the accuracy of the test asphalt consistency and ensure the test results. In multiple tests, the insertion depth of the test needle can also be guaranteed to be consistent each time, reducing the dispersion of the test data, ensuring repeatability, and improving the accuracy of the test results. (2) The first and second assemblies are detachably connected and cooperate with each other, with one set on the lifting end and the other set on the test base, which facilitates the installation and disassembly of the test instrument, and makes it convenient to replace, maintain or adjust the test instrument, thereby improving the flexibility and maintainability of the device. It can be used for fixed installation or temporary docking of the test instrument, thereby improving compatibility.

[0016] (3) The adjustable feet are screwed into the test bench, and the height of the test bench can be adjusted by rotating the adjustable feet to keep the test bench level, which is convenient for operation and can also achieve high-precision adjustment. By setting a level on the test bench, the level status of the test bench can be displayed intuitively, which is convenient for operation and viewing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the asphalt penetration testing auxiliary device of this utility model; Figure 2 This is a schematic diagram of the limiting groove used in the asphalt penetration testing auxiliary device of this utility model. Figure 3 This is a cross-sectional view of the limiting component in the asphalt penetration testing auxiliary device of this utility model. Figure 4 This is a structural diagram illustrating the first driving component in the asphalt penetration testing auxiliary device of this utility model.

[0019] Figure label: 1. Test bench; 2. Mounting frame; 3. First scale gauge; 4. Lifting mechanism; 5. First pointer; 6. Test instrument; 7. Test seat; 8. Test needle; 9. Mounting mechanism; 10. First assembly; 11. Adjustable support leg; 12. Level; 13. Limiting groove; 14. Asphalt needle insertion mold; 15. Limiting mechanism; 16. Concave part; 17. Limiting component; 18. Elastic component; 19. Guide rail; 20. Translation mechanism; 21. First driving component; 22. Second driving component; 23. Second scale gauge; 24. Second pointer; 25. Third scale gauge; 26. Third pointer. Detailed Implementation

[0020] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0021] like Figures 1 to 4 As shown, this utility model provides an auxiliary device for asphalt penetration testing, including a test bench 1, a first scale gauge 3, a lifting mechanism 4, a testing instrument 6, and an installation mechanism 9. The test bench 1 is provided with a mounting frame 2; the first scale gauge 3 is mounted on the mounting frame 2 and extends along the height direction of the test bench 1; the lifting mechanism 4 is mounted on the mounting frame 2, and its lifting end moves along the height direction of the test bench 1. A first pointer 5 is mounted on the lifting end, pointing to the scale value on the first scale gauge 3; the testing instrument 6 includes a test seat 7 mounted on the lifting end, and a test needle 8 is mounted on the side of the test seat 7 facing the test bench 1; the installation mechanism 9 includes a detachably connected first assembly 10 and a second assembly, one of which is mounted on the lifting end, and the other on the test seat 7.

[0022] An asphalt needle insertion mold 14 is placed on the test bench 1. The test needle 8 of the testing instrument 6 is positioned above the asphalt needle insertion mold 14. The lifting mechanism 4 drives the testing instrument 6 to descend, thereby moving the test needle 8 towards the asphalt needle insertion mold 14 until the test needle 8 penetrates into the asphalt needle insertion mold 14. The first pointer 5 moves synchronously with the test needle 8, pointing to the first scale 3. By reading the position of the first pointer 5 on the first scale 3, the penetration depth of the test needle 8 can be accurately obtained, thus achieving precise control over the penetration depth of the test needle 8. This improves the accuracy of the tested asphalt consistency, enhances alignment precision, and ensures the accuracy of the test results. Furthermore, in multiple tests, the penetration depth of the test needle 8 can be guaranteed to be consistent each time, reducing the dispersion of the test data, ensuring repeatability, and improving the accuracy of the test results.

[0023] The lifting mechanism 4 is used to drive the lifting of the testing instrument 6 and the first pointer 5. The lifting mechanism 4 can be any component capable of lifting, such as an electric push rod, hydraulic cylinder, or screw drive. In this embodiment, the lifting mechanism 4 includes a lifting screw, which is threaded through the mounting bracket 2 along the height direction of the testing platform 1. A handwheel is fixedly connected to the top of the testing platform 1, and rotating the handwheel drives the rotation of the lifting screw for convenient operation. The bottom end of the lifting screw is the lifting end, and a connecting seat can be provided on the lifting end. The testing instrument 6 and the first pointer 5 are both mounted on the connecting seat. The rotation of the lifting screw drives the lifting of the connecting seat, causing the testing instrument 6 and the first pointer 5 located on the connecting seat to move synchronously. The connecting seat provides an assembly position for the testing instrument 6 and the first pointer 5, facilitating installation. Different shapes of connecting seats can be selected according to different application scenarios, or the testing instrument 6 and the first pointer 5 can be assembled in different positions on the connecting seat according to different application scenarios, improving the versatility of the device.

[0024] In some embodiments, the mounting mechanism 9 includes a detachably connected first assembly 10 and a second assembly, one of which is disposed on the lifting end and the other on the test base 7. The detachable connection between the first assembly 10 and the second assembly facilitates the installation and disassembly of the testing instrument 6, making it easier to replace, maintain, or adjust the instrument 6, thus improving the flexibility and maintainability of the device. It allows for fixed installation or temporary docking of the testing instrument 6, enhancing compatibility. One of the first assembly 10 and the second assembly can be a threaded hole, and the other can be a screw. The detachable connection between the first assembly 10 and the second assembly is achieved through the screw engagement with the threaded hole. Alternatively, both the first assembly 10 and the second assembly can be magnetic blocks, achieving a detachable connection through magnetic attraction between the two magnetic blocks.

[0025] like Figures 1 to 4 As shown, in some embodiments, the bottom of the test bench 1 is provided with at least three adjustable legs 11 at intervals. The height of the corresponding part of the test bench 1 can be adjusted by adjusting the height of the adjustable legs 11, thereby ensuring the levelness of the test bench 1 and further improving the reliability of the test.

[0026] It is known that the number of adjustable legs 11 can be adapted to different shapes of the test platform 1. For example, when the test platform 1 is a cuboid, there are four adjustable legs 11, each located at one of the corners of the bottom of the test platform 1; when the test platform 1 is a prism, the number of adjustable legs 11 can be the same as the number of sides of the prism. Of course, the number of adjustable legs 11 can also be different from the shape of the test platform 1. For example, in this embodiment, the test platform 1 is a cuboid, and there are three adjustable legs 11, each distributed in a triangular shape, which can also ensure the stability of the adjustable legs 11 in supporting the test platform 1.

[0027] The adjustable support leg 11 can be connected by a segmented snap-fit ​​connection or by a drive connection such as a cylinder, thereby achieving height adjustment of the adjustable support leg 11. Optionally, the adjustable support leg 11 is screwed into the test bench 1. By using a threaded connection, the height of the test bench 1 can be adjusted by rotating the adjustable support leg 11, so that the test bench 1 can be kept level, which is convenient for operation and can also achieve high-precision adjustment.

[0028] In some embodiments, a level 12 is provided on the test bench 1, which can visually display the horizontal state of the test bench 1. By observing the position of the bubble in the level 12, the height of the adjustable support 11 can be further fine-tuned until the bubble is centered. At this time, the test bench 1 is in a precise horizontal state, which further ensures the accuracy of the asphalt penetration test results and avoids problems such as penetration depth deviation caused by the tilt of the test bench 1.

[0029] The test bench 12 can be configured with one, two, or more instruments as needed. When only one instrument is used, it can be positioned at the center of the test bench 1 to minimize the impact of irregularities or stress concentrations at the edges of the test bench 1 on the measurement results, allowing the instrument to more accurately reflect the levelness of the test bench 1. Alternatively, the instrument can be positioned diagonally across the test bench 1, enabling simultaneous detection of the levelness in two mutually perpendicular directions. Furthermore, depending on the specific requirements, various instruments 12 can be installed at different locations on the test bench 1 for level measurement.

[0030] In some embodiments, a limiting groove 13 is provided in the middle of the test bench 1. The limiting groove 13 is used to place the asphalt needle mold 14. The setting of the limiting groove 13 provides a placement position for the asphalt needle mold 14 and can initially fix the asphalt needle mold 14, restricting its movement in the horizontal direction and ensuring the accuracy of subsequent tests.

[0031] like Figures 1 to 4As shown, in some embodiments, at least two sets of limiting mechanisms 15 are provided in the limiting groove 13, with each limiting mechanism 15 spaced apart. The limiting element 17 of the limiting mechanism 15 abuts against the asphalt needle insert 14. The two sets of limiting mechanisms 15 abut against the asphalt needle insert 14 respectively, thereby clamping and fixing the asphalt needle insert 14 in the limiting groove 13, thus ensuring the reliability of the position of the asphalt needle insert 14 in the limiting groove 13.

[0032] The limiting mechanism 15 includes any component that can limit and fix the asphalt needle insert 14 within the limiting groove 13. For example, the limiting mechanism 15 includes a limiting block that is movably disposed within the limiting groove 13. The thickness of the limiting block is adjustable, or the limiting block includes components of different thicknesses. The limiting block is inserted into the gap between the asphalt needle insert 14 and the limiting groove 13 to fix the asphalt needle insert 14. Of course, the two sets of limiting mechanisms 15 can be set at any position within the limiting groove 13. Optionally, the two sets of limiting mechanisms 15 are located on opposite sides of the asphalt needle insert 14. Similarly, multiple sets of limiting mechanisms 15 can be provided to further improve the fixing effect of the asphalt needle insert 14.

[0033] Optionally, the limiting mechanism 15 includes a recessed portion 16 formed on the side wall of the limiting groove 13, and the limiting member 17 is movably disposed within the recessed portion 16. An elastic member 18 is provided between the limiting member 17 and the recessed portion 16. The elastic member 18 connects the limiting member 17 and the recessed portion 16, ensuring the stable movement of the limiting member 17. Simultaneously, the elastic member 18 provides elastic support for the limiting member 17, allowing it to automatically adapt to the shape and size of the asphalt needle insert 14, achieving a good holding effect. It also provides a certain buffering protection for the asphalt needle insert 14, preventing damage due to excessive clamping force. The elastic member 18 can be a spring or a torsion spring, etc. In this embodiment, the elastic member 18 is a spring. Under normal conditions, the elastic element 18 allows the limiting element 17 to be stably embedded in the concave portion 16. When the limiting element 17 moves toward the bottom of the groove near the concave portion 16, it will compress the elastic element 18, thereby placing the asphalt needle mold 14 into the limiting groove 13. Then, under the action of the elastic restoring force, the limiting element 17 can automatically move toward the direction of the asphalt needle mold 14 until it abuts against the asphalt needle mold 14, thereby achieving automatic fixation and improving efficiency.

[0034] Furthermore, a guide rail 19 extending along the movement direction of the limiting member 17 is provided within the recessed portion 16, and a guide groove is provided on the limiting member 17 to fit into the guide rail 19. The cooperation between the guide rail 19 and the guide groove further improves the stability of the movement of the limiting member 17, ensuring that the limiting member 17 can hold the asphalt needle into the mold 14 and guaranteeing the fixing effect of the asphalt needle into the mold 14. At the same time, this cooperation method can also prevent the limiting member 17 from rotating or shaking during movement, ensuring the stable limiting and fixing of the limiting mechanism 15.

[0035] In some embodiments, a translation mechanism 20 is provided on the test bench 1. The translation mechanism 20 includes a first driving component 21 and a second driving component 22 disposed at a first movable end of the first driving component 21. The mounting frame 2 is disposed at a second movable end of the second driving component 22. The first movable end moves along a first direction, and the second movable end moves along a second direction. The first direction, the second direction, and the height direction of the test bench 1 are perpendicular to each other. By driving the mounting frame 2 to move in the horizontal direction through the translation mechanism 20, the testing instrument 6 located on the mounting frame 2 can be moved according to the needs of different testing positions, so that the testing instrument 6 can be moved to a designated position, thereby improving the applicability and testing efficiency of the device.

[0036] It is understood that the first driving component 21 and the second driving component 22 can be any movable driving component, such as a cylinder, hydraulic cylinder, electric push rod, or lead screw drive. For example, the first driving component 21 includes a first cylinder, and the piston rod of the first cylinder is connected to the second driving component 22. Therefore, the extension and retraction of the piston rod of the first cylinder will drive the movement of the second driving component 22. The second driving component 22 uses a second cylinder, and the mounting bracket 2 is disposed on the piston rod of the second cylinder. The extension and retraction of the piston rod of the second cylinder will drive the reciprocating movement of the mounting bracket 2.

[0037] Optionally, the test bench 1 is equipped with a second scale 23, and a second pointer 24 is provided on the first movable end, the second pointer 24 pointing to the scale value on the second scale 23; a third scale 25 is provided on the first movable end, and a third pointer 26 is provided on the second movable end, the third pointer 26 pointing to the scale value on the third scale 25. Through the cooperation of the second scale 23 and the second pointer 24, the operator can intuitively observe the moving distance of the second drive component 22; through the cooperation of the third scale 25 and the third pointer 26, the operator can intuitively observe the moving distance of the mounting bracket 2, thereby facilitating precise control of the position of the test needle 8.

[0038] like Figures 1 to 4As shown above, this application provides an auxiliary device for asphalt penetration testing. The adjustable feet 11 are adjusted by observing the horizontal state of the level 12 to level the test bench 1. Then, the asphalt penetration mold 14 is placed in the limiting groove 13 of the test bench 1, and the limiting mechanism 15 limits and fixes the asphalt penetration mold 14 to the test bench 1. The mounting frame 2 is driven to move horizontally by the translation mechanism 20, and precise adjustment is made using the scale indicated by the second pointer 24 and the third pointer 26, positioning the test needle 8 directly above the asphalt penetration mold 14. Then, the lifting mechanism 4 drives the testing instrument 6 to descend, thereby moving the test needle 8 towards the asphalt penetration mold 14 until the test needle 8 penetrates the asphalt penetration mold 14. The first pointer 5 moves synchronously with the test needle 8, pointing to the first scale 3. By reading the position of the first pointer 5 on the first scale 3, the penetration depth of the test needle 8 can be accurately obtained, thus achieving precise control over the penetration depth of the test needle 8. This improves the accuracy of the tested asphalt consistency, enhances alignment precision, and ensures reliable test results. Furthermore, in multiple tests, the penetration depth of the test needle 8 can be guaranteed to be consistent each time, reducing the dispersion of test data, ensuring repeatability, and improving the accuracy of test results.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An auxiliary device for detecting asphalt penetration, characterized in that, include: Test bench (1), on which a mounting bracket (2) is provided; The first scale (3) is mounted on the mounting bracket (2) and extends along the height direction of the test bench (1); A lifting mechanism (4) is installed on the mounting frame (2). The lifting end of the lifting mechanism (4) moves along the height direction of the test bench (1). A first pointer (5) is installed on the lifting end. The first pointer (5) points to the scale value on the first scale (3). The testing instrument (6) includes a test seat (7) disposed at the lifting end, and a test needle (8) is disposed on the side of the test seat (7) facing the test table (1). The mounting mechanism (9) includes a first assembly (10) and a second assembly that are detachably connected. One of the first assembly (10) and the second assembly is located on the lifting end, and the other is located on the test seat (7).

2. The asphalt penetration testing auxiliary device as described in claim 1, characterized in that: The bottom of the test bench (1) is provided with at least three adjustable feet (11) spaced apart.

3. The asphalt penetration testing auxiliary device as described in claim 2, characterized in that: The adjustable support leg (11) is screwed into the test bench (1).

4. The asphalt penetration testing auxiliary device as described in claim 2, characterized in that: A level (12) is installed on the test bench (1).

5. The asphalt penetration testing auxiliary device as described in claim 1, characterized in that: The test bench (1) has a limiting groove (13) in the middle, and the limiting groove (13) is used to place asphalt needles into the mold (14).

6. The asphalt penetration testing auxiliary device as described in claim 5, characterized in that: At least two sets of limiting mechanisms (15) are provided in the limiting groove (13), and each limiting mechanism (15) is spaced apart. The limiting member (17) of the limiting mechanism (15) abuts against the asphalt needle insert (14).

7. The asphalt penetration testing auxiliary device as described in claim 6, characterized in that: The limiting mechanism (15) includes an inner recess (16) formed on the side wall of the limiting groove (13), the limiting member (17) is movably disposed in the inner recess (16), and an elastic member (18) is provided between the limiting member (17) and the inner recess (16).

8. The asphalt penetration testing auxiliary device as described in claim 7, characterized in that: The recess (16) is provided with a guide rail (19) extending along the movement direction of the limiting member (17), and the limiting member (17) is provided with a guide groove that is fitted and cooperates with the guide rail (19).

9. The asphalt penetration testing auxiliary device as described in claim 1, characterized in that: The test bench (1) is provided with a translation mechanism (20), which includes a first driving component (21) and a second driving component (22) disposed at the first movable end of the first driving component (21). The mounting bracket (2) is disposed at the second movable end of the second driving component (22). The first movable end moves along a first direction, and the second movable end moves along a second direction. The first direction, the second direction and the height direction of the test bench (1) are perpendicular to each other.

10. The asphalt penetration testing auxiliary device as described in claim 9, characterized in that: The test bench (1) is provided with a second scale (23), and a second pointer (24) is provided on the first movable end. The second pointer (24) points to the scale value on the second scale (23). A third scale (25) is provided on the first movable end, and a third pointer (26) is provided on the second movable end. The third pointer (26) points to the scale value on the third scale (25).

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