Asphalt ductility test equipment

Abstract

The utility model discloses asphalt ductility test equipment, and relates to the field of asphalt test.The asphalt ductility test equipment comprises a constant-temperature test box, a mold assembly and a leveling assembly, a fixed seat is fixedly connected to the inner side wall of the constant-temperature test box, and movable seats are symmetrically arranged on one side of the fixed seat; supporting seats are fixedly connected to the sides, close to each other, of the fixed seat and the movable seat, the mold assembly comprises a bottom plate, an arc-shaped mold and a side mold, the leveling assembly comprises a connecting rod and a scraper, the scraper is fixedly installed at the bottom of the connecting rod, and a screw rod is rotatably installed at the top of the fixed seat; a first motor used for driving the screw rod to rotate is fixedly installed at one end of the fixing base, and one end of the connecting rod is connected to the screw rod in a threaded and sleeving mode. The mold assembly is arranged on the supporting base, sample preparation, constant-temperature water bath, leveling and drawing operation can be carried out in the constant-temperature test box, a sample does not need to be transferred, unnecessary troubles can be reduced, and time and labor are saved.

Description

Technical Field

[0001] The present application relates to the field of asphalt testing, and in particular to an asphalt ductility testing device. Background Art

[0002] Asphalt ductility refers to the degree of asphalt expansion. The greater the ductility, the better the asphalt's plasticity. The ductility test involves passing asphalt through a ductility mold to form a standard figure-8 specimen. The specimen and the ductility mold are then placed in a constant-temperature water bath for a period of time. The mold with the specimen is then placed in a test chamber with constant-temperature water and stretched at a rate of 50 mm per minute to the length at which it breaks. This is the ductility.

[0003] The existing Chinese patent with the announcement number CN220671177U discloses an asphalt ductility test box, including a box body, the top of which is open, heating rods are arranged at the bottom of the box body, a fixed plate is fixed between the inner walls of the box body, and a movable plate is also slidably provided between the inner walls of the box body, the movable plate and the fixed plate are located at the same horizontal height, and a driving component for driving the movable plate to approach or move away from the fixed plate is also provided in the box body, and the tops of the movable plate and the fixed plate are both provided with positioning components for installing ductility molds, and the movable plate is also detachably provided with a disturbance component for disturbing the water in the box body through the positioning component.

[0004] With respect to the above-mentioned related technologies, the inventors have found that there are at least the following problems in the technology: when conducting an asphalt ductility test, after the specimen and the ductility mold are taken out of the constant temperature water bath, the staff are required to use a scraper to scrape off the excess asphalt on the mold one by one, so that the top surface of the asphalt specimen is flush with the top surface of the mold, and then the specimen can be placed in the test box for testing. The specimen needs to be transferred multiple times, and the manual operation is cumbersome, time-consuming and labor-intensive. Therefore, an asphalt ductility testing device is now proposed. Utility Model Content

[0005] In order to improve the problems of the existing asphalt ductility test being cumbersome, time-consuming and labor-intensive to operate, the present application provides an asphalt ductility test device.

[0006] The asphalt ductility test equipment provided in this application adopts the following technical solution:

[0007] A kind of asphalt ductility testing equipment includes a constant temperature test box, a mold assembly and a leveling assembly, a fixed seat is fixedly connected to the inner side wall of the constant temperature test box, a movable seat is symmetrically provided on one side of the fixed seat, and the sides of the fixed seat and the movable seat close to each other are fixedly connected to a support seat, the mold assembly includes a base plate, an arc mold and a side mold, the base plate is slidably installed between two support seats, the two arc molds are respectively buckled on the two support seats, and the side mold is clamped between the two arc molds, the leveling assembly includes a connecting rod and a scraper, the scraper is fixedly installed on the bottom of the connecting rod, a screw is rotatably installed on the top of the fixed seat, and a first motor for driving the screw to rotate is fixedly installed on one end of the fixed seat, and one end of the connecting rod is threadedly sleeved on the screw.

[0008] By adopting the above technical solution, when making the test piece, the base plate can be fixed on the support seat, and then the two arc-shaped molds can be buckled on the two support seats respectively, and then the side mold can be placed between the two arc-shaped molds to complete the mold combination. Then asphalt can be poured into the mold. After the test piece cools down, water is added to the constant temperature test box for a constant temperature water bath. After the constant temperature water bath ends, the first motor can be started to drive the screw to rotate, so that the screw drives the connecting rod to slide, and the connecting rod drives the scraper to pass over the test piece to scrape off the excess asphalt above the mold, thereby achieving the effect of leveling the test piece. There is no need to transfer the test piece, which reduces manual operation and saves time and effort.

[0009] Preferably, a second motor is fixedly mounted on one end of the constant temperature test box, an output end of the second motor is fixedly connected to a screw rod, and one end of the movable seat is threadedly sleeved on the screw rod.

[0010] By adopting the above technical solution, the second motor is started to drive the screw to rotate, so that the screw drives the movable seat to slide, and the two arc-shaped molds are gradually separated, so that the asphalt ductility test can be realized.

[0011] Preferably, a guide rod is fixedly installed on a side of the interior of the constant temperature test box away from the screw rod, and the other end of the movable seat is slidably sleeved on the guide rod.

[0012] By adopting the above technical solution, the guide rod can guide the movable seat.

[0013] Preferably, a first dovetail block is provided at the bottom of the base plate, a first dovetail groove adapted to the first dovetail block is provided on the top surface of the support seat, and a first knob is threadedly connected to the top of the base plate above the first dovetail block.

[0014] By adopting the above technical solution, when making a test piece, the first dovetail block of the base plate is first slid along the first dovetail groove of the support seat, and the base plate is fixed to the support seat by the first knob, so that the sample can be made directly on the support seat.

[0015] Preferably, the bottom plate is provided with second dovetail grooves on both sides of the side mold, and the second dovetail grooves are slidably connected with limit blocks, and the limit blocks abut against the outer wall of the side mold.

[0016] By adopting the above technical solution, the side mold can be limited by the limit block.

[0017] Preferably, the top of the limiting block is threadedly connected to a second knob.

[0018] By adopting the above technical solution, the limit block can be fixed by the second knob.

[0019] Preferably, a limiting rod is fixedly installed on the top of the movable seat.

[0020] By adopting the above technical solution, the connecting rod can be guided and limited.

[0021] Preferably, one end of the connecting rod away from the screw rod is fixedly connected to the telescopic rod, and one end of the telescopic rod away from the connecting rod is slidably sleeved on the limiting rod.

[0022] By adopting the above technical solution, when the movable seat gradually moves away from the fixed seat, the telescopic rod can extend along with the movable seat, so that the connecting rod remains stable.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By placing the mold assembly on the support base, sample preparation, constant temperature water bath, leveling and drawing operations can be carried out in a constant temperature test chamber without transferring the sample, which can reduce unnecessary trouble and save time and effort.

[0025] 2. With the help of the leveling component, after the constant temperature water bath ends, the first motor can be started to drive the screw to rotate, so that the screw drives the connecting rod to slide, and the connecting rod drives the scraper to pass over the specimen to scrape off the excess asphalt above the mold, thereby achieving the effect of leveling the specimen, reducing manual operations and further saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of an asphalt ductility test equipment for this application;

[0027] Figure 2 This is a schematic diagram of the structure of a leveling component of an asphalt ductility test equipment for this application;

[0028] Figure 3 A schematic structural diagram of a mold assembly for an asphalt ductility test device for this application;

[0029] Figure 4 This is a structural schematic diagram of a connecting rod of an asphalt ductility testing equipment for this application.

[0030] Figure numerals: 1. Constant temperature test chamber; 11. Fixed seat; 12. Movable seat; 13. Support seat; 131. First dovetail groove; 14. Second motor; 15. Screw; 16. Guide rod; 2. Mold assembly; 21. Bottom plate; 211. First dovetail block; 212. First knob; 213. Second dovetail groove; 214. Limit block; 215. Second knob; 22. Arc mold; 23. Side mold; 3. Leveling assembly; 31. Connecting rod; 32. Scraper; 33. Screw; 34. First motor; 35. Limit rod; 36. Telescopic rod. DETAILED DESCRIPTION

[0031] The following is combined with Figures 1-4 This application is described in further detail.

[0032] The embodiment of the present application discloses an asphalt ductility testing device.

[0033] Reference Figure 1-3 An asphalt ductility test equipment includes a constant temperature test box 1, a mold assembly 2 and a leveling assembly 3. A fixed seat 11 is fixedly connected to the inner wall of the constant temperature test box 1. A movable seat 12 is symmetrically provided on one side of the fixed seat 11. The fixed seat 11 and the movable seat 12 are fixedly connected to a support seat 13 on the side close to each other. The mold assembly 2 includes a bottom plate 21, an arc mold 22 and a side mold 23. The bottom plate 21 is slidably installed between the two support seats 13. The bottom of the bottom plate 21 is provided with a first dovetail block 211. The top surface of the support seat 13 is provided with a The first dovetail block 211 is adapted to the first dovetail groove 131, and the top of the bottom plate 21 is located above the first dovetail block 211 and is threadedly connected to the first knob 212. The two arc-shaped molds 22 are respectively buckled on the two support seats 13, and the side mold 23 is clamped between the two arc-shaped molds 22. The bottom plate 21 is located on both sides of the side mold 23 and is provided with a second dovetail groove 213. The second dovetail groove 213 is slidably connected to a limit block 214, and the limit block 214 abuts against the outer wall of the side mold 23. The top of the limit block 214 is threadedly connected to the second knob 215.

[0034] By placing the mold assembly 2 on the support seat 13, when making the test piece, first slide the first dovetail block 211 of the base plate 21 along the first dovetail groove 131 of the support seat 13, and fix the base plate 21 on the support seat 13 by the first knob 212, then buckle the two arc molds 22 on the two support seats 13 respectively, and then place the side mold 23 between the two arc molds 22, and finally slide the limit block 214 along the second dovetail groove 213 and against the side mold 23, and then fix the limit block 214 by the second knob 215 so that the limit block 214 limits the side mold 23, and the mold assembly can be completed; then asphalt can be poured into the mold, and after the test piece cools down, water is added to the constant temperature test box 1 for a constant temperature water bath.

[0035] Reference Figure 2 and Figure 4 The leveling assembly 3 includes a connecting rod 31 and a scraper 32. The scraper 32 is fixedly installed at the bottom of the connecting rod 31. The scraper 32 is flush with the top surface of the arc mold 22. A screw 33 is rotatably installed on the top of the fixed seat 11. The screw 33 is arranged along the length direction of the fixed seat 11. One end of the fixed seat 11 is fixedly installed with a first motor 34 for driving the screw 33 to rotate. One end of the connecting rod 31 is threadedly sleeved on the screw 33. A limiting rod 35 is fixedly installed on the top of the movable seat 12. The limiting rod 35 is arranged along the length direction of the movable seat 12. The arrangement is that the end of the connecting rod 31 away from the screw rod 33 is fixedly connected to the telescopic rod 36, and the end of the telescopic rod 36 away from the connecting rod 31 is slidably sleeved on the limit rod 35. By setting the leveling component 3, after the constant temperature water bath is finished, the first motor 34 can be started to drive the screw rod 33 to rotate, so that the screw 33 drives the connecting rod 31 to slide, and the connecting rod 31 drives the scraper 32 to pass over the specimen, scraping off the excess asphalt above the mold, thereby achieving the effect of leveling the specimen. There is no need to transfer the specimen, which reduces manual operation and saves time and effort.

[0036] Reference Figure 1 A second motor 14 is fixedly installed at one end of the constant temperature test box 1, and a screw rod 15 is fixedly connected to the output end of the second motor 14. One end of the movable seat 12 is threadedly sleeved on the screw rod 15. A guide rod 16 is fixedly installed on the side of the constant temperature test box 1 away from the screw rod 15. The other end of the movable seat 12 is slidably sleeved on the guide rod 16. After the specimen is leveled, the first knob 212 and the second knob 215 can be loosened, the limit block 214 and the bottom plate 21 can be removed, and then the second motor 14 can be started to drive the screw rod 15 to rotate, so that the screw rod 15 drives the movable seat 12 to slide along the guide rod 16, so that the two arc-shaped molds 22 gradually move away from each other, realizing the ductility test of asphalt. There is no need to transfer the specimen during the entire test, saving time and effort.

[0037] The implementation principle of the present application is as follows: when making a test piece, first slide the first dovetail block 211 of the bottom plate 21 along the first dovetail groove 131 of the support seat 13, and fix the bottom plate 21 on the support seat 13 by the first knob 212, then buckle the two arc molds 22 on the two support seats 13 respectively, and then place the side mold 23 between the two arc molds 22, and finally slide the limit block 214 along the second dovetail groove 213 and against the side mold 23, and then fix the limit block 214 by the second knob 215, so that the limit block 214 limits the side mold 23, and the mold assembly is completed; then asphalt can be poured into the mold, and after the test piece cools down, it can be placed in the constant temperature test box 1 Add water to make a constant temperature water bath. After the constant temperature water bath is finished, the first motor 34 can be started to drive the screw 33 to rotate, so that the screw 33 drives the connecting rod 31 to slide, so that the connecting rod 31 drives the scraper 32 to pass over the specimen, and scrape off the excess asphalt above the mold to achieve the effect of leveling the specimen. After the specimen is leveled, the first knob 212 and the second knob 215 can be loosened, the limit block 214 and the bottom plate 21 can be removed, and then the second motor 14 can be started to drive the screw 15 to rotate, so that the screw 15 drives the movable seat 12 to slide along the guide rod 16, so that the two arc-shaped molds 22 gradually move away from each other, realizing the ductility test of asphalt. There is no need to transfer the specimen during the entire test, saving time and effort.

[0038] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An asphalt ductility testing device, characterized by: The invention comprises a constant temperature test box (1), a mold assembly (2) and a leveling assembly (3), wherein a fixed seat (11) is fixedly connected to the inner side wall of the constant temperature test box (1), a movable seat (12) is symmetrically arranged on one side of the fixed seat (11), and a support seat (13) is fixedly connected to the side where the fixed seat (11) and the movable seat (12) are close to each other, and the mold assembly (2) comprises a bottom plate (21), an arc mold (22) and a side mold (23), wherein the bottom plate (21) is slidably installed between two support seats (13), and the two arc molds (22) are fixedly connected to each other. The mold (22) is respectively buckled on the two support seats (13), and the side mold (23) is clamped between the two arc-shaped molds (22). The leveling component (3) includes a connecting rod (31) and a scraper (32). The scraper (32) is fixedly installed at the bottom of the connecting rod (31). A screw (33) is rotatably installed on the top of the fixed seat (11). One end of the fixed seat (11) is fixedly installed with a first motor (34) for driving the screw (33) to rotate. One end of the connecting rod (31) is threadedly sleeved on the screw (33).

2. The asphalt ductility testing equipment according to claim 1, characterized in that: A second motor (14) is fixedly mounted on one end of the constant temperature test box (1), a screw rod (15) is fixedly connected to the output end of the second motor (14), and one end of the movable seat (12) is threadedly sleeved on the screw rod (15).

3. The asphalt ductility testing equipment according to claim 2, characterized in that: A guide rod (16) is fixedly installed on one side of the constant temperature test box (1) away from the screw rod (15), and the other end of the movable seat (12) is slidably sleeved on the guide rod (16).

4. The asphalt ductility testing equipment according to claim 1, characterized in that: A first dovetail block (211) is provided at the bottom of the base plate (21), a first dovetail groove (131) adapted to the first dovetail block (211) is provided on the top surface of the support seat (13), and a first knob (212) is threadedly connected to the top of the base plate (21) above the first dovetail block (211).

5. The asphalt ductility testing equipment according to claim 4, characterized in that: The bottom plate (21) is provided with second dovetail grooves (213) on both sides of the side mold (23), and the second dovetail grooves (213) are slidably connected with limit blocks (214), and the limit blocks (214) abut against the outer wall of the side mold (23).

6. The asphalt ductility testing equipment according to claim 5, characterized in that: The top of the limiting block (214) is threadedly connected to a second knob (215).

7. The asphalt ductility testing equipment according to claim 1, characterized in that: A limiting rod (35) is fixedly mounted on the top of the movable seat (12).

8. The asphalt ductility testing equipment according to claim 7, characterized in that: One end of the connecting rod (31) away from the screw rod (33) is fixedly connected to a telescopic rod (36), and one end of the telescopic rod (36) away from the connecting rod (31) is slidably sleeved on the limiting rod (35).

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