Asphalt performance testing device

Abstract

The utility model particularly relates to an asphalt performance testing device which comprises a mounting part, a needle penetration testing assembly and a pressure testing assembly, the mounting part comprises a testing table, a support is arranged at the top of the testing table, strip-shaped grooves are formed in the two sides of the support, lead screws are installed in the strip-shaped grooves, motors are installed on the support, the lead screws are connected with connecting seats, and the connecting seats are installed in the strip-shaped grooves; the needle penetration testing assembly comprises a needle penetration tester and a water bath, the needle penetration tester is mounted on a connecting seat, and the water bath is mounted on the testing table; the pressure test assembly comprises an upper rod and a box body, the upper rod is mounted on the other connecting seat, a pressure sensor is arranged at the bottom end of the upper rod, a lower rod is arranged at the bottom of the pressure sensor, a pressure head is arranged at the bottom end of the lower rod, and the box body is mounted on the test board; according to the design, needle penetration testing and compression resistance testing are integrally designed, indexes such as compression resistance and viscosity of the modified asphalt can be conveniently tested and evaluated, the testing site is saved, and use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of modified asphalt testing equipment, in particular to an asphalt performance testing device. Background Art

[0002] Modified asphalt is an asphalt binder made by adding external additives (modifiers) such as rubber, resin, high molecular polymer, ground rubber powder or other fillers, or taking measures such as mild oxidation of asphalt to improve the performance of asphalt or asphalt mixture. There are two mechanisms for modifying asphalt. One is to change the chemical composition of asphalt, and the other is to make the modifier evenly distributed in the asphalt to form a certain spatial network structure. At present, modified asphalt is used in fields such as highway paving and waterproofing engineering.

[0003] In practical applications, in order to provide a reference for engineering design and material selection, it is necessary to conduct multiple performance tests on modified asphalt, such as ductility test, viscosity test, compressive performance test, high temperature resistance test, etc.; Currently, when testing modified asphalt, there are instruments such as needle penetration tester and Brookfield rotation viscosity tester. Although such equipment is convenient for testing the performance of modified asphalt, a single type of equipment can only test one performance of modified asphalt at a time. When multiple performances need to be tested, multiple equipment needs to be replaced, which not only causes multiple equipment to occupy the test site, but also reduces the convenience of test operations. In view of this, we propose an asphalt performance testing device. Utility Model Content

[0004] In order to solve the above problems, the utility model provides an asphalt performance testing device.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An asphalt performance testing device, comprising:

[0007] The mounting part includes a test bench, a support is provided on the top of the test bench, strip grooves are respectively provided on both sides of the support, a screw rod is rotatably installed in the strip groove, a motor connected to the screw rod is installed on the top of the support, a connecting seat is threadedly connected to the screw rod, and the connecting seat is slidably installed in the strip groove;

[0008] A needle penetration test assembly, comprising a needle penetration tester and a water bath, wherein the needle penetration tester is mounted on one of the connection seats, the water bath is mounted on the test bench and is located below the needle penetration tester, a bearing plate is disposed on the top of the water bath, a mounting hole is provided on the bearing plate, and a vessel is placed in the mounting hole; and

[0009] A pressure testing assembly comprises an upper rod and a box body, wherein the upper rod is mounted on another connecting seat, a pressure sensor is arranged at the bottom end of the upper rod, a lower rod is arranged at the bottom of the pressure sensor, a pressure head is arranged at the bottom end of the lower rod, the box body is mounted on the test bench and is located below the pressure head, and the top of the box body is open.

[0010] Furthermore, slots are respectively provided on one side of the two connecting seats away from each other, and fixing bolts passing through the slots are threadedly screwed on the connecting seats; a first fixing seat is provided on one side of the needle penetration tester, and a first plug block that can be movably inserted into the slot is provided on the first fixing seat, and a socket adapted to the fixing bolt is provided on the first plug block; a connecting block is provided on the outer side of the upper rod, and a second fixing seat is provided on one side of the connecting block, and a second plug block that can be movably inserted into the slot is provided on the second fixing seat, and a socket adapted to the fixing bolt is provided on the second plug block.

[0011] Furthermore, a limiting strip is arranged on the side wall of the strip-shaped groove, and a limiting groove connected to the limiting strip for vertical sliding is opened on the connecting seat.

[0012] Furthermore, the test bench is provided with a groove adapted to the water bath at a position below the penetration tester.

[0013] Furthermore, a guide groove extending outward from the support is provided on the top of the test bench, and the box body is slidably connected to the guide groove via a guide rail so that it can be moved closer to or away from the bottom of the pressure head.

[0014] Furthermore, through grooves are provided on both sides of the box body, baffles are slidably inserted in the two through grooves respectively, and a notch for the pressure head to pass through is provided on one side of the two baffles close to each other.

[0015] Furthermore, a bottom plate is provided on one side of the box body, and a connecting bolt is threadedly connected to the bottom plate. A positioning hole adapted to the connecting bolt is opened on the top of the test bench, and when the connecting bolt is inserted into the positioning hole, the box body will be located below the pressure head.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] Through the installation part, penetration test assembly and pressure test assembly: on the one hand, the penetration tester can be used to conveniently carry out penetration test on modified asphalt, and the viscosity and temperature sensitivity of modified asphalt can be evaluated through the penetration test data; on the other hand, the compression test can be carried out on modified asphalt by squeezing the modified asphalt block with the set pressure head, and the compression performance of modified asphalt can be evaluated through the compression test; the design integrates the penetration test and the compression test, which is convenient for testing and evaluating the compressive performance and viscosity of modified asphalt, which not only saves the test site but also makes it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of a part of the explosion structure in the utility model;

[0020] Figure 3 It is a structural schematic diagram of the needle penetration tester in the utility model;

[0021] Figure 4 It is a schematic diagram of a partial explosion structure of the needle penetration test assembly in the utility model;

[0022] Figure 5 It is a partial structural schematic diagram of the pressure test assembly in the utility model;

[0023] Figure 6 It is a schematic diagram of a partial explosion structure of the pressure test assembly in the utility model.

[0024] In the figure:

[0025] 1. Installation part; 10. Test bench; 101. Groove; 102. Guide groove; 11. Support; 111. Strip groove; 12. Screw rod; 13. Motor; 14. Connecting seat; 141. Slot; 142. Limiting groove; 15. Fixing bolt;

[0026] 2. Penetration test assembly; 20. Penetration tester; 21. First fixing seat; 22. First plug block; 23. Water bath; 231. Handle; 24. Loading plate; 241. Mounting hole; 25. Container;

[0027] 3. Pressure test assembly; 30. Second fixing seat; 31. Second plug block; 32. Connecting block; 33. Upper rod; 34. Pressure sensor; 35. Lower rod; 36. Pressure head; 37. Box body; 371. Guide rail; 372. Bottom plate; 373. Connecting bolt; 374. Support bar; 375. Groove; 38. Baffle; 381. Notch. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] This embodiment provides a technical solution:

[0030] See also Figure 1-Figure 6 , an asphalt performance testing device, including a mounting part 1, a needle penetration testing component 2 and a pressure testing component 3.

[0031] The mounting portion 1 includes a test bench 10, a support 11 is provided on the top of the test bench 10, and strip grooves 111 are respectively opened on both sides of the support 11, a screw rod 12 is rotatably installed in the strip groove 111, a motor 13 transmission-connected to the screw rod 12 is installed on the top of the support 11, a connecting seat 14 is threadedly connected to the screw rod 12, and the connecting seat 14 is slidably installed in the strip groove 111 up and down.

[0032] The penetration test assembly 2 includes a penetration tester 20 and a water bath 23. The penetration tester 20 is installed on one of the connecting seats 14. The water bath 23 is installed on the test bench 10 and is located below the penetration tester 20. A supporting plate 24 is provided on the top of the water bath 23. A mounting hole 241 is opened on the supporting plate 24. A container 25 is placed in the mounting hole 241 for placing modified asphalt.

[0033] The pressure test assembly 3 includes an upper rod 33 and a box body 37. The upper rod 33 is installed on another connecting seat 14. A pressure sensor 34 is arranged at the bottom end of the upper rod 33. A lower rod 35 is arranged at the bottom of the pressure sensor 34. A pressure head 36 is arranged at the bottom end of the lower rod 35. The box body 37 is installed on the test bench 10 and is located below the pressure head 36. The top of the box body 37 is open for placing modified asphalt.

[0034] Preferably, the two connecting seats 14 are provided with slots 141 on the sides away from each other, and the connecting seats 14 are threaded with fixing bolts 15 that penetrate the slots 141; a first fixing seat 21 is provided on one side of the needle penetration tester 20, and a first plug block 22 that can be movably inserted into the slot 141 is provided on the first fixing seat 21, and a socket that is compatible with the fixing bolt 15 is provided on the first plug block 22; a connecting block 32 is provided on the outer side of the upper rod 33, and a second fixing seat 30 is provided on one side of the connecting block 32, and a second plug block 31 that can be movably inserted into the slot 141 is provided on the second fixing seat 30, and a socket that is compatible with the fixing bolt 15 is provided on the second plug block 31. This design facilitates the connection and fixing of the needle penetration tester 20 and the pressure test assembly 3 to the connecting seat 14, and also facilitates the disassembly of the needle penetration tester 20 and the pressure test assembly 3, so as to meet the needs of later maintenance.

[0035] Specifically, a limit strip is provided on the side wall of the strip groove 111, and a limit slot 142 is provided on the connection seat 14 to slide up and down with the limit strip. The setting of the limit strip and the strip groove 111 guides and limits the lifting movement of the connection seat 14, thereby ensuring the stability of the connection seat 14.

[0036] Preferably, the test bench 10 is provided with a groove 101 adapted to the water bath 23 at a position below the penetration tester 20. The setting of the groove 101 has a limiting effect on the water bath 23, thereby ensuring the stability of the water bath 23 during the test.

[0037] It is understandable that two symmetrical handles 231 are fixed to the outer wall of the water bath 23 . The arrangement of the handles 231 facilitates taking and placing the water bath 23 , and the design is user-friendly.

[0038] Preferably, a guide groove 102 extending outward from the support 11 is provided on the top of the test bench 10, and the box body 37 is slidably connected to the guide groove 102 via a guide rail 371, so that it can be close to or away from the bottom of the pressure head 36. The setting of the guide rail 371 and the guide groove 102 plays a role in positioning and limiting the installation of the box body 37, ensuring the stability of the box body 37 during the test process.

[0039] Furthermore, through grooves 375 are provided on both sides of the box body 37, and baffles 38 are slidably inserted in the two through grooves 375, and the two baffles 38 are provided with notches 381 for the pressure head 36 to pass through on one side close to each other. The baffles 38 play a protective role, which can prevent the modified asphalt fragments from splashing out and accidentally injuring the staff during the test.

[0040] Furthermore, a bottom plate 372 is provided on one side of the box body 37, and a connecting bolt 373 is threadedly connected to the bottom plate 372. A positioning hole adapted to the connecting bolt 373 is provided on the top of the test bench 10, and when the connecting bolt 373 is inserted into the positioning hole, the box body 37 will be located below the pressure head 36. This design facilitates the fixing of the box body 37 and ensures the reliability of the box body 37 during the test.

[0041] It should be supplemented that support bars 374 are fixed on the inner walls on both sides of the box body 37, and the support bars 374 are used to support the baffle 38 to ensure the stability of the baffle 38 when it moves horizontally.

[0042] In addition, the penetration of modified asphalt is measured to evaluate the viscosity of road viscous petroleum modified asphalt and determine the modified asphalt grade; the penetration index of modified asphalt can be further calculated to describe the temperature sensitivity of modified asphalt; the equivalent softening point of 800 (equivalent to the temperature when the asphalt penetration is 800) is calculated to evaluate the high temperature stability of modified asphalt; the equivalent brittle point of 1.2 (equivalent to the temperature when the asphalt penetration is 1.2) is calculated to evaluate the low temperature crack resistance of asphalt.

[0043] When performing a needle penetration test on modified asphalt, the user first fills the water bath 23 with warm water of a suitable temperature, and inserts the container 25 containing the modified asphalt into the mounting hole 241, so that the warm water submerges the container 25. Then the user turns on the power of the motor 13, and the motor 13 starts to work. The output shaft of the motor 13 drives the screw rod 12 to rotate, and the connecting seat 14 moves downward and drives the needle penetration tester 20 to move downward, and the standard needle of the needle penetration tester 20 is inserted into the container 25 for testing.

[0044] When conducting a compression test on the modified asphalt, the user first aligns the guide rail 371 with the guide groove 102 and inserts it, and moves the box body 37 to the position directly below the pressure head 36. At the same time, the user tightens the connecting bolt 373, and the box body 37 is fixed. Then the user places the modified asphalt block directly below the box body 37 and the pressure head 36, and then turns on the power of the motor 13. The motor 13 starts to work, and the output shaft of the motor 13 drives the screw 12 to rotate, and the connecting seat 14 moves downward, and the upper rod 33, the lower rod 35, the pressure sensor 34 and the pressure head 36 move downward. As the pressure head 36 presses against the modified asphalt block and presses downward, the pressure sensor 34 obtains a pressure value.

[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An asphalt performance testing device, characterized in that: include: The mounting portion (1) comprises a test bench (10), a support (11) being arranged on the top of the test bench (10), strip grooves (111) being respectively provided on both sides of the support (11), a screw rod (12) being rotatably mounted in the strip groove (111), a motor (13) being mounted on the top of the support (11) and being transmission-connected to the screw rod (12), a connecting seat (14) being threadedly connected to the screw rod (12), and the connecting seat (14) being slidably mounted in the strip groove (111) up and down; A needle penetration test assembly (2), comprising a needle penetration tester (20) and a water bath (23), wherein the needle penetration tester (20) is mounted on one of the connection seats (14), the water bath (23) is mounted on the test bench (10) and is located below the needle penetration tester (20), a carrying plate (24) is arranged on the top of the water bath (23), a mounting hole (241) is opened on the carrying plate (24), and a vessel (25) is placed in the mounting hole (241); and A pressure test assembly (3) comprises an upper rod (33) and a box body (37), wherein the upper rod (33) is mounted on another connecting seat (14), a pressure sensor (34) is arranged at the bottom end of the upper rod (33), a lower rod (35) is arranged at the bottom of the pressure sensor (34), a pressure head (36) is arranged at the bottom end of the lower rod (35), the box body (37) is mounted on a test bench (10) and is located below the pressure head (36), and the top of the box body (37) is open.

2. The asphalt performance testing device according to claim 1, characterized in that: A slot (141) is respectively provided on one side of the two connecting seats (14) away from each other, and a fixing bolt (15) that passes through the slot (141) is screwed on the connecting seat (14); a first fixing seat (21) is provided on one side of the needle penetration tester (20), and a first plug block (22) that can be movably inserted into the slot (141) is provided on the first fixing seat (21), and a plug hole that is compatible with the fixing bolt (15) is provided on the first plug block (22); a connecting block (32) is provided on the outer side of the upper rod (33), and a second fixing seat (30) is provided on one side of the connecting block (32), and a second plug block (31) that can be movably inserted into the slot (141) is provided on the second fixing seat (30), and a plug hole that is compatible with the fixing bolt (15) is provided on the second plug block (31).

3. The asphalt performance testing device according to claim 1, characterized in that: A limiting strip is arranged on the side wall of the strip-shaped groove (111), and a limiting groove (142) connected to the limiting strip for vertical sliding is provided on the connecting seat (14).

4. The asphalt performance testing device according to claim 1, characterized in that: The test bench (10) is provided with a groove (101) adapted to the water bath (23) at a position below the penetration tester (20).

5. The asphalt performance testing device according to claim 1, characterized in that: The top of the test bench (10) is provided with a guide groove (102) extending outward from the support (11), and the box body (37) is slidably connected to the guide groove (102) via a guide rail (371) so that it can approach or move away from the bottom of the pressure head (36).

6. The asphalt performance testing device according to claim 1, characterized in that: Through grooves (375) are provided on both sides of the box body (37), and baffles (38) are slidably inserted into the two through grooves (375), and a notch (381) for the pressure head (36) to pass through is provided on one side of the two baffles (38) close to each other.

7. The asphalt performance testing device according to claim 1, characterized in that: A bottom plate (372) is provided on one side of the box body (37), and a connecting bolt (373) is threadedly connected to the bottom plate (372). A positioning hole adapted to the connecting bolt (373) is provided on the top of the test bench (10), and when the connecting bolt (373) is inserted into the positioning hole, the box body (37) will be located below the pressure head (36).

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