A device for detecting high-temperature performance of asphalt mixture

Abstract

The utility model discloses a kind of asphalt mixture high-temperature performance detection device, it is related to asphalt performance detection field, including test box, test box is openwork structure;Control panel is set to one side of test box;Test component is set to inside of test box, for testing operation to asphalt;Rotary component, symmetrically set to inside of test box, for rotating operation of different angles to asphalt;Moving component is set to the middle of rotary component, for translation operation to asphalt;Observation window is set to one side top of test box, strain gauge, cover in moving component top.The utility model can carry out detection operation in sealed environment, protect staff, change different detection instrument according to requirement to detect asphalt and detect the mechanical property of asphalt, realize the performance of detecting asphalt under different angles, improve data comprehensiveness, drive asphalt to automatically move under detection instrument and hydraulic cylinder, improve detection efficiency.

Description

Technical Field

[0001] This utility model relates to asphalt performance testing, specifically to a high-temperature performance testing device for asphalt mixtures. Background Technology

[0002] Asphalt plays a vital role in road construction. It possesses excellent workability, is easy to pave and compact, and imparts flexibility to the road surface, providing driving comfort and safety. Furthermore, it has a longer service life than ordinary concrete pavements. However, at high temperatures, the viscosity of substandard asphalt mixtures decreases with increasing temperature, leading to increased asphalt fluidity. Vehicles traveling under these conditions are prone to developing deep ruts, increasing the risk of accidents.

[0003] For example, the authorized utility model patent document with application number 202023175034.4 discloses a high-temperature adhesion performance testing device for asphalt mixtures, including a testing platform, a placement box and a testing instrument body, a support leg connected to the bottom of the testing platform, a support column connected to the top of the testing platform, a top plate connected to the top of the support column, a nut seat connected to the center of the top plate, a screw threadedly connected to the nut seat and extending through the top plate, and a sliding plate rotatably connected to the bottom of the screw and slidably connected to the support column.

[0004] However, the aforementioned testing device only uses a testing instrument to test asphalt. This testing method may not be able to specifically test the properties of the asphalt, which may lead to misjudgments by workers, resulting in the use of substandard asphalt for road paving and causing safety accidents.

[0005] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes a high-temperature performance testing device for asphalt mixtures to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] Therefore, the specific technical solution adopted by this utility model is as follows:

[0008] A high-temperature performance testing device for asphalt mixtures includes: a test chamber with a hollow structure; a control panel located on one side of the test chamber; a testing component located inside the test chamber for testing the asphalt; a rotating component symmetrically arranged inside the test chamber for rotating the asphalt at different angles; a moving component located in the middle of the rotating component for translating the asphalt; an observation window located on the top side of the test chamber; and strain gauges covering the top of the moving component.

[0009] Furthermore, in order to test the asphalt, the testing assembly includes an electric telescopic rod set at the top of the test chamber, with a connecting block at the bottom of the electric telescopic rod for mounting different detectors, and a hydraulic cylinder on the other side of the electric telescopic rod.

[0010] Furthermore, to achieve the rotational operation of the asphalt, the rotating assembly includes two sets of support plates symmetrically arranged inside the test chamber. Each set of support plates has a rotating groove in the middle, and a rotating disk is installed inside each groove. A rotating shaft is located on one side of one set of rotating disks. A worm gear is located outside the rotating shaft, and a worm gear meshes with the worm gear. One end of the worm gear is connected to the test chamber, and the other end of the worm gear is connected to a first motor. A limit ring is provided on the outer side of the rotating disk.

[0011] Furthermore, to achieve the translational operation of asphalt, the moving assembly includes two sets of support members positioned between the rotating disks, with a fixed plate between the two sets of support members. A lead screw is mounted on the top of the fixed plate, and limit grooves are symmetrically arranged on both sides of the lead screw at the top of the fixed plate. A second motor is mounted on one end of the lead screw, and a sliding block is mounted on the outer side of the lead screw. A moving plate is mounted on the top of the sliding block, and several fixing members are mounted on the top of the moving plate. A limit strip that moves in conjunction with the limit grooves is mounted on the bottom of the moving plate, and strain gauges cover the top of the moving plate. Two sets of dust brushes are symmetrically arranged on the top of the fixed plate above the lead screw, with the edges of the two sets of dust brushes abutting each other. The sliding block reciprocates between the two sets of dust brushes, and the limit strips and limit grooves have a T-shaped structure.

[0012] Furthermore, in order to support the moving components, the support includes several sets of support columns fixedly connected to the fixed plate, and two of the sets of support columns are Z-shaped structures.

[0013] Furthermore, in order to fix the asphalt, the fixing component includes a nut set at the top of the moving plate, a bolt inside the nut, and a positioning plate outside the bolt. The positioning plate has an L-shaped structure.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. By placing asphalt in a sealed environment for testing, the temperature of the asphalt during testing is maintained, effectively protecting workers from potentially harmful substances. Different testing instruments can be used as needed to test the asphalt. The mechanical properties of the asphalt are tested under the action of a hydraulic cylinder, which rotates the asphalt to test its performance at different angles, obtaining more data and improving data comprehensiveness. This provides a more intuitive understanding of the performance of asphalt at high temperatures. The asphalt is moved automatically by the testing instrument and the hydraulic cylinder, allowing it to move freely within the testing process and improving testing efficiency.

[0016] 2. Through the testing components, multiple analyses and tests are performed on the asphalt. Different testing instruments are used to analyze the composition of the asphalt, and hydraulic cylinders are used to test the performance of the asphalt at different angles to obtain more detailed data and ensure that the performance data of the asphalt is complete and comprehensive.

[0017] 3. By combining the rotating and translating components, the asphalt can be rotated at a certain angle while in a fixed state, increasing the number of angles for asphalt detection and simulating the complex stress state of asphalt. This can also prevent problems such as one-sidedness in asphalt detection. At the same time, the asphalt can be translated, allowing it to move accurately and automatically under the detection component. The movement of the asphalt can be controlled according to the requirements to carry out the detection operation, thereby improving the detection efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0019] Figure 1 This is a schematic diagram of the structure of a high-temperature performance testing device for asphalt mixtures according to an embodiment of the present utility model;

[0020] Figure 2 This is one of the cross-sectional views of a high-temperature performance testing device for asphalt mixtures according to an embodiment of the present utility model;

[0021] Figure 3 This is a second cross-sectional view of a high-temperature performance testing device for asphalt mixtures according to an embodiment of the present utility model;

[0022] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0023] In the picture:

[0024] 1. Test chamber; 2. Control panel; 3. Test components; 301. Electric telescopic rod; 302. Connecting block; 303. Hydraulic cylinder; 4. Rotating component; 401. Support plate; 402. Rotating groove; 403. Rotating disk; 404. Rotating shaft; 405. Worm gear; 406. Worm; 407. First motor; 408. Limiting ring; 5. Moving component; 501. Support component; 5011. Support column; 502. Fixing plate; 503. Lead screw; 504. Limiting groove; 505. Second motor; 506. Sliding block; 507. Moving plate; 508. Fixing component; 5081. Nut; 5082. Bolt; 5083. Positioning plate; 509. Limiting strip; 510. Dustproof brush; 6. Observation window. Detailed Implementation

[0025] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0026] According to an embodiment of the present invention, a high-temperature performance testing device for asphalt mixtures is provided.

[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-4 As shown, the high-temperature performance testing device for asphalt mixture according to an embodiment of the present invention includes a test chamber 1, which has a hollow structure; a control panel 2, which is located on one side of the test chamber 1; a test component 3, which is located inside the test chamber 1 and is used to test the asphalt; a rotation component 4, which is symmetrically located inside the test chamber 1 and is used to rotate the asphalt at different angles; a moving component 5, which is located in the middle of the rotation component 4 and is used to move the asphalt; an observation window 6, which is located on the top of one side of the test chamber 1; and a strain gauge 7, which covers the top of the moving component 5.

[0028] It should be noted that the start command is issued through the human-machine interface (HMI) of the control panel 2. This signal is transmitted from the HMI to the PLC programmable logic controller. After receiving the command, the PLC controls the first motor 407, the second motor 505, the electric telescopic rod 301, and the hydraulic cylinder 303 to perform precise movement and extension operations according to preset data, making accurate operations during asphalt testing and ensuring that all operations are performed accurately. This is existing technology and will not be elaborated on further here.

[0029] In one embodiment, the test assembly 3 includes an electric telescopic rod 301 located at the top of the test chamber 1. A connecting block 302 is provided at the bottom of the electric telescopic rod 301 for mounting different detectors. A hydraulic cylinder 303 is provided on the other side of the electric telescopic rod 301 to perform asphalt testing.

[0030] When further explanation is needed, instruments such as near-infrared spectroscopy sensors and Raman spectroscopy sensors are installed on the connection block 302 for operation. The working principle of the spectral sensor is to identify the composition and structure of the substance by analyzing the absorption, reflection or scattering characteristics of the substance to different wavelengths.

[0031] During stress testing, asphalt is placed on a moving plate 507 and strain gauges are used to cover the surface of the asphalt. The working principle of strain gauges is based on the strain effect of materials. They reflect the deformation of the object being tested by measuring the change in resistance. After the test is completed, the strain gauges are tested with professional instruments to obtain data. This is existing technology and will not be elaborated on here.

[0032] In addition, the control panel 2 is electrically connected in sequence to the infrared spectral sensor 304 and the strain gauge 7.

[0033] The working principle of test component 3 is as follows: First, according to the requirements, the staff installs the infrared spectral sensor 304 through the connecting block 302 (the sensor can be Ocean-Insight-HDX-NIR or Beacon-NIR, etc.). Then, the staff sends a start command to the electric telescopic rod 301 or the hydraulic cylinder 303 through the HMI interface of the control panel 2. After starting, the electric telescopic rod 301 drives the connecting block 302 to move vertically, and the spectral sensor contacts the asphalt surface for detection. When it is necessary to perform stress testing on the asphalt, the data is preset and the hydraulic cylinder 303 is started to perform stress operation on the asphalt.

[0034] In one embodiment, the rotating assembly 4 includes two sets of support plates 401 symmetrically arranged inside the test chamber 1. A rotating groove 402 is provided in the middle of each set of support plates 401. A rotating disk 403 is provided inside each rotating groove 402. A rotating shaft 404 is provided on one side of one set of rotating disks 403. A worm gear 405 is provided on the outside of the rotating shaft 404. A worm 406 meshes with the worm gear 405 on the outside of the worm gear 405. One end of the worm 406 is connected to the test chamber 1, and a first motor 407 is provided on the other end of the worm 406. A limiting ring 408 is provided on the outside of the rotating disk 403 to realize the angular rotation of the asphalt.

[0035] The working principle of the rotating component 4 is as follows: First, the operator sends a start signal to the first motor 407 through the HMI interface of the control panel 2. Upon receiving the start signal, the output shaft of the first motor 407 drives the worm 406 to rotate. The rotating worm 406 drives the worm wheel 405, which meshes with it, to rotate. At this time, the worm wheel 405 synchronously drives the rotating shaft 404 to rotate, and simultaneously drives the rotating disk 403 to rotate in the rotating groove 402 in the middle of the support plate 401. Under the action of the limiting ring 408, the rotating disk 403 is prevented from disengaging from the rotating groove 402. When it is necessary to stop the rotation, the output shaft of the first motor 407 stops outputting to the worm 406. At this time, the worm wheel 405 stops moving synchronously. At this time, without the intervention of external power, according to the characteristics of the worm wheel and worm, the worm wheel 405 cannot drive the worm 406 to rotate in the opposite direction, thus ensuring that the rotating disk 403 is prevented from resetting after rotation.

[0036] When a reset operation is required, the operator controls the output shaft of the first motor 407 to drive the worm gear 405 to rotate in the opposite direction, which in turn drives the rotating disk 403 to reset.

[0037] In one embodiment, the moving component 5 includes two sets of support members 501 disposed between the rotating disks 403, and a fixing plate 502 disposed between the two sets of support members 501; a lead screw 503 is disposed at the top of the fixing plate 502, and limit grooves 504 are symmetrically disposed on both sides of the lead screw 503 and at the top of the fixing plate 502; a second motor 505 is disposed at one end of the lead screw 503, a sliding block 506 is disposed on the outer side of the lead screw 503, a moving plate 507 is disposed at the top of the sliding block 506, a plurality of fixing members 508 are disposed at the top of the moving plate 507, and a limit strip 509 that moves in conjunction with the limit grooves 504 is disposed at the bottom of the moving plate 507. Furthermore, the top of the movable plate 507 is covered with strain gauges 7, and two sets of dustproof brushes 510 are symmetrically arranged at the top of the fixed plate 502 and above the lead screw 503, with the edges of the two sets of dustproof brushes 510 abutting each other. The sliding block 506 reciprocates between the two sets of dustproof brushes 510. The limiting strip 509 and the limiting groove 504 have a T-shaped structure. The support member 501 includes several sets of support columns 5011 fixedly connected to the fixed plate 502, and two sets of support columns 5011 have a Z-shaped structure. The fixing member 508 includes a nut 5081 set at the top of the movable plate 507. A bolt 5082 is set inside the nut 5081, and a positioning plate 5083 is set outside the bolt 5082. The positioning plate 5083 has an L-shaped structure, realizing the reciprocating movement and fixing of the asphalt.

[0038] If further explanation is needed, the asphalt to be tested can be fixed in a container (such as a polytetrafluoroethylene container) or an adhesive (such as epoxy resin).

[0039] The working principle of the moving component 5 is as follows: First, the operator places the asphalt to be tested on the top of the moving plate 507. When using a container, the height of the positioning plate 5083 is raised or lowered by twisting the bolt 5082. The positioning plate 5083 fixes the asphalt and prevents it from accidentally falling off when the moving plate 507 moves or rotates. Next, the operator sends a start signal to the second motor 505 through the HMI interface of the control panel 2. The output shaft of the second motor 505 drives the lead screw 503 to rotate, which drives the sliding block 506 to reciprocate on the lead screw 503. At the same time, it drives the moving plate 507 to reciprocate on the fixed plate. Under the interaction of the limiting groove 504 and the limiting strip 509, the moving plate 507 is guaranteed not to slip or fall during movement or rotation.

[0040] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0041] In practical applications, firstly, the staff opens the test chamber 1 and places the high-temperature asphalt on the moving plate 507 for fixation. Then, according to requirements, the staff starts the test component 3 via the HMI interface of the control panel 2 (the working principle of the test component 3 is as described above). When stress testing of the asphalt is required, the staff places strain gauges on the asphalt surface (the working principle of the strain gauges is as described above). Next, the staff starts the moving component 5 to control the asphalt to move below the hydraulic cylinder 303. When the test angle needs to be adjusted, the staff starts the rotating component 4 (the working principle of the rotating component 4 is as described above) to rotate the asphalt angle. When the test begins, the staff closes the test chamber 1, then starts the hydraulic cylinder 303, and outputs pressure to the strain gauge 7 according to the preset data via the control panel 2. The observation window 6 then monitors the asphalt testing operation in real time. After the test is completed, the strain gauge 7 is removed and the specific data is recorded promptly to ensure data accuracy.

[0042] In summary, by utilizing the above-mentioned technical solution of this utility model, asphalt is placed in a sealed environment for testing, maintaining the temperature of the asphalt during testing. This effectively protects workers from the harm of potentially harmful substances. Furthermore, different testing instruments can be used to test the asphalt as needed. The mechanical properties of the asphalt are tested under the action of a hydraulic cylinder, causing the asphalt to rotate and allowing for testing of its performance at different angles. This results in obtaining more data, improving data comprehensiveness, and providing a more intuitive understanding of the asphalt's performance at high temperatures. The asphalt is also moved automatically by the testing instrument and hydraulic cylinder, allowing it to move freely within the testing process and improving testing efficiency.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] 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. A high-temperature performance testing device for asphalt mixtures, characterized in that, include: Test box (1), wherein the test box (1) is a hollow structure; Control panel (2) is located on one side of the test box (1); The test component (3) is located inside the test box (1) and is used to test asphalt. The rotating component (4) is symmetrically arranged inside the test box (1) and is used to rotate the asphalt at different angles. The moving component (5) is located in the middle of the rotating component (4) and is used to perform translational operations on the asphalt; An observation window (6) is located on the top side of the test box (1); Strain gauge (7) is placed on top of the moving component (5).

2. The high-temperature performance testing device for asphalt mixtures according to claim 1, characterized in that, The test assembly (3) includes an electric telescopic rod (301) set at the top inside the test box (1). A connecting block (302) is provided at the bottom of the electric telescopic rod (301) for installing different detectors. A hydraulic cylinder (303) is provided on the other side of the electric telescopic rod (301), and an infrared spectral sensor (304) is installed at the bottom of the connecting block (302).

3. The high-temperature performance testing device for asphalt mixtures according to claim 1, characterized in that, The rotating assembly (4) includes two sets of support plates (401) symmetrically arranged in the test box (1). A rotating groove (402) is provided in the middle of each of the two sets of support plates (401). A rotating disk (403) is provided inside each of the rotating grooves (402). A rotating shaft (404) is provided on one side of one of the rotating disks (403). A worm gear (405) is provided on the outer side of the rotating shaft (404), and a worm (406) is provided on the outer side of the worm gear (405) to mesh with it. One end of the worm (406) is connected to the test box (1), and the other end of the worm (406) is provided with a first motor (407).

4. The high-temperature performance testing device for asphalt mixtures according to claim 3, characterized in that, A limiting ring (408) is provided on the outer side of the rotating disk (403).

5. The high-temperature performance testing device for asphalt mixtures according to claim 3, characterized in that, The moving component (5) includes two sets of support members (501) disposed between the rotating disk (403), and a fixing plate (502) is disposed between the two sets of support members (501); a lead screw (503) is disposed at the top of the fixing plate (502), and limit grooves (504) are symmetrically disposed on both sides of the lead screw (503) and at the top of the fixing plate (502). A second motor (505) is provided at one end of the lead screw (503), a sliding block (506) is provided on the outside of the lead screw (503), a moving plate (507) is provided at the top of the sliding block (506), a plurality of fixing parts (508) are provided at the top of the moving plate (507), and a limiting strip (509) is provided at the bottom of the moving plate (507) to cooperate with the limiting groove (504) for movement. Furthermore, the top of the movable plate (507) is covered with strain gauges (7).

6. The high-temperature performance testing device for asphalt mixtures according to claim 5, characterized in that, Two sets of dust brushes (510) are symmetrically arranged at the top of the fixed plate (502) and above the lead screw (503), and the edges of the two sets of dust brushes (510) abut against each other, and the sliding block (506) reciprocates between the two sets of dust brushes (510).

7. The high-temperature performance testing device for asphalt mixtures according to claim 5, characterized in that, The limiting strip (509) and the limiting groove (504) are T-shaped structures.

8. The high-temperature performance testing device for asphalt mixtures according to claim 5, characterized in that, The support member (501) includes several sets of support columns (5011) fixedly connected to the fixing plate (502), and the two sets of support columns (5011) are Z-shaped structures.

9. The high-temperature performance testing device for asphalt mixtures according to claim 5, characterized in that, The fastener (508) includes a nut (5081) disposed at the top of the movable plate (507), a bolt (5082) disposed inside the nut (5081), and a positioning plate (5083) disposed outside the bolt (5082), the positioning plate (5083) having an L-shaped structure.

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