Constant-temperature tensile test tank of asphalt ductility instrument

Abstract

The utility model belongs to the technical field of asphalt ductility tests, and particularly relates to a constant-temperature tensile test tank of an asphalt ductility instrument, which comprises a main body, a bottom plate, a control device arranged on the main body, a glass cover arranged at the top of the main body, a motor arranged on the outer side of the main body, a test mold arranged on the bottom plate, a side mold arranged on the side surface of the test mold and a lower water tank arranged in the main body, an upper water tank is arranged in the lower water tank, sliding rails are arranged on the two sides of the top of the upper water tank, sliding assemblies are arranged in the sliding rails, and the lower water tank comprises a first interlayer, aerogel, a second interlayer, a third interlayer, a bottom cavity and a heating pipe. Through the first interlayer, the aerogel, the second interlayer, the third interlayer, the bottom cavity and the heating pipe, temperature loss is effectively reduced, the starting frequency of the heating pipe is reduced, the energy-saving effect is achieved, through the sliding rail, the sliding plate, the sliding assembly and the balls, the moving smoothness of the sliding plate on the sliding rail by means of the sliding assembly is improved, the snapping time of an asphalt test piece is more accurate, and the working efficiency is improved. And the accuracy of actual experimental data is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to bitumen ductility test technical field, concretely is a bitumen ductility instrument constant temperature tensile test tank. BACKGROUND

[0002] Bituminous pavement is widely used in road engineering, and as the main binder of bituminous pavement - asphalt, the quality directly influences the service performance and service life of bituminous pavement. Therefore, in road engineering, it is particularly important to accurately detect the used bitumen. Bitumen ductility test is one of three important detection items of bitumen, therefore, accurately detecting bitumen ductility has great significance.

[0003] The prior art has the following deficiencies: the prior art with the application number 201921548668.4 proposes a bitumen ductility instrument constant temperature tensile test tank structure, which includes a ductility instrument water tank, a test water tank arranged in the ductility instrument water tank and a tensile cross bar for connecting with the movable end of the ductility instrument, the test water in the test water tank is completely separated from the test water outside the test water tank in the ductility instrument water tank, the test water in the test water tank and the test water outside the test water tank in the ductility instrument water tank transfer heat through the tank wall of the test water tank, the tensile cross bar is located above the ductility instrument water tank, a longitudinal rod extending into the test water tank is arranged on the tensile cross bar, a sliding plate for connecting with one end of a test model is arranged at the lower end of the longitudinal rod, and a tank end fixed plate for connecting with the other end of the test model is fixed in the test water tank. The utility model can improve the test accuracy.

[0004] The structure of the water tank in the above-mentioned device is single, and accurate temperature is required when conducting experiments on bitumen. After the water stored in the conventional water tank structure is heated, the water temperature is easily lost due to the conduction of the metal material water tank, and the heating device needs to be heated frequently, the energy-saving effect is poor, and the heat preservation effect of the water tank can be further improved. During the movement of the sliding plate in the water tank, with the increase of the use time, the sliding plate and the sliding rail will be affected by rust, which will affect the smoothness, resulting in errors in the timing of bitumen tensile fracture, and affecting the accuracy of experimental data. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a bitumen ductility instrument constant temperature tensile test tank to solve the problems in the background art.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: an asphalt ductility instrument constant temperature tensile test tank, including main part, bottom plate, being provided with control device on the main part, the top of main part is provided with glass cover, the outside of main part is provided with motor, being provided with test mould on the bottom plate, the side of test mould is provided with side mould, the inside of main part is provided with lower water tank, the inside of lower water tank is provided with upper water tank, the both sides of upper water tank top are provided with sliding rail, the inside of sliding rail is provided with sliding assembly, the top of sliding assembly is provided with sliding plate, the both ends of sliding plate are provided with screw rod, the middle part of sliding plate is provided with metal column, the inside of upper water tank is provided with through -hole, the sliding assembly and sliding rail are provided with ball between sliding assembly and sliding rail;

[0007] The lower water tank comprises a first interlayer, an aerogel body, a second interlayer, a third interlayer, a bottom cavity, and a heating pipe.

[0008] As a preferred technical scheme of the utility model: the bottom plate is adapted to the test mold, the test mold has two groups and is mutually symmetrical, two groups of side molds are arranged between the two groups of test molds.

[0009] As a preferred technical scheme of the utility model: the upper water tank is arranged in the lower water tank, the through hole is formed in the upper water tank, and the sliding assembly is installed in the sliding rail and adapted to the sliding rail.

[0010] As a preferred technical scheme of the utility model: the sliding plate is fixedly installed on the top of the sliding assembly, three groups of metal columns are fixedly installed at equal intervals in the middle part of the sliding plate, and one end of the upper water tank is provided with three groups of symmetrical metal columns.

[0011] As a preferred technical scheme of the utility model: one end of the screw rod is rotatably installed on the inner wall of the main body, the other end of the screw rod penetrates through the end part of the sliding plate and extends out of the main body to be connected with the output end of the motor, and the screw rod is threadedly connected with the end part of the sliding plate.

[0012] As a preferred technical scheme of the utility model: the specifications of the first interlayer, the second interlayer and the third interlayer are consistent, and the heating pipe is fixedly installed in the bottom cavity.

[0013] As a preferred technical scheme of the utility model: a gap exists between the sliding assembly and the sliding rail, the ball is embedded on the outside of the sliding assembly, and a groove adapted to the ball is formed in the inner wall of the sliding rail.

[0014] Compared with the prior art, the utility model provides an asphalt ductility instrument constant temperature tensile test tank, which has the following beneficial effects:

[0015] 1. This is a constant temperature tensile test chamber for asphalt ductility testing. It consists of a first interlayer, an aerogel, a second interlayer, a third interlayer, a bottom cavity, and a heating tube. The heating tube is activated by a control device and heats directly from the bottom of the lower water tank. The second and first interlayers in the lower and upper water tanks ensure that the water temperature in the lower tank needs to come into contact with the air in the second and first interlayers when it is transferred outward. Compared with the heat transfer effect of metal materials, this effectively reduces the heat transfer efficiency. Furthermore, the aerogel can effectively block the heat, effectively reduce the heat loss, reduce the activation frequency of the heating tube, and achieve energy saving.

[0016] 2. The constant temperature tensile test chamber of this asphalt ductility tester is equipped with a slide rail, a slide plate, a sliding component, and ball bearings. When the slide plate moves on the slide rail, the ball bearings reduce the contact area between the sliding component and the slide rail. The rolling ball bearings effectively improve the smoothness of the slide plate's movement on the slide rail with the help of the sliding component, making the asphalt specimen breakage time more accurate and ensuring the accuracy of actual experimental data. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a top view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the main cross-sectional structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the drainage trough structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the ball bearing installation of this utility model.

[0022] In the diagram: 1. Main body; 2. Control device; 3. Glass cover; 4. Motor; 5. Base plate; 6. Trial mold; 7. Side mold; 8. Lower water tank; 801. First interlayer; 802. Aerogel; 803. Second interlayer; 804. Third interlayer; 805. Bottom cavity; 806. Heating tube; 9. Upper water tank; 10. Slide rail; 11. Slide plate; 12. Lead screw; 13. Metal column; 14. Through hole; 15. Sliding assembly; 16. Ball bearing. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Referring to Figures 1-5 In the embodiment, the asphalt ductility instrument constant-temperature tensile test tank comprises a main body 1, a bottom plate 5, a control device 2 arranged on the main body 1, a glass cover 3 arranged on the top of the main body 1, a motor 4 arranged on the outer side of the main body 1, a test mold 6 arranged on the bottom plate 5, side molds 7 arranged on the side of the test mold 6, a lower water tank 8 arranged in the main body 1, an upper water tank 9 arranged in the lower water tank 8, slide rails 10 arranged on the two sides of the top of the upper water tank 9, a sliding assembly 15 arranged in the slide rails 10, a sliding plate 11 arranged on the top of the sliding assembly 15, lead screws 12 arranged at the two ends of the sliding plate 11, metal columns 13 arranged in the middle of the sliding plate 11, through holes 14 formed in the inner side of the upper water tank 9, and balls 16 arranged between the sliding assembly 15 and the slide rails 10;

[0025] The control device 2 is used for controlling the opening and closing of the motor 4 and the heating pipe 806, and the upper water tank 9 and the lower water tank 8 are used for storing water for experiments.

[0026] The lower water tank 8 comprises a first interlayer 801, aerogel 802, a second interlayer 803, a third interlayer 804, a bottom cavity 805, and a heating pipe 806, the first interlayer 801 is filled with the aerogel 802, and the heating pipe 806 is arranged in the bottom cavity 805.

[0027] The aerogel 802 can effectively block the outward transmission of water temperature, and the bottom cavity 805 can provide installation space for the heating pipe 806.

[0028] In the embodiment, the bottom plate 5 is matched with the test mold 6, the test mold 6 comprises two groups of test molds 6 and is symmetrical, two groups of symmetrical side molds 7 are arranged between the two groups of test molds 6, the upper water tank 9 is arranged in the lower water tank 8, the through holes 14 are formed in the upper water tank 9, and the sliding assembly 15 is arranged in the slide rails 10 and matched with the slide rails 10.

[0029] Specifically, the slide rails 10 are matched with the sliding assembly 15 to facilitate the movement of the sliding plate 11, and the test mold 6 and the side mold 7 are used for loading asphalt test pieces.

[0030] In the embodiment, the sliding plate 11 is fixedly arranged on the top of the sliding assembly 15, three groups of metal columns 13 are fixedly arranged at equal intervals in the middle of the sliding plate 11, one end of the lead screw 12 is rotatably arranged on the inner wall of the main body 1, the other end of the lead screw 12 penetrates through the end of the sliding plate 11 and then extends out of the main body 1 to be connected with the output end of the motor 4, and the lead screw 12 and the end of the sliding plate 11 are threadedly connected.

[0031] Specifically, the lead screw 12 is driven by the motor 4 to drive the movement of the sliding plate 11, and the motor 4 provides sufficient power for the rotation of the lead screw 12.

[0032] In the embodiment, the first interlayer 801, the second interlayer 803 and the third interlayer 804 have the same specification, the heating pipe 806 is fixedly installed in the bottom cavity 805, the sliding assembly 15 is provided with a gap relative to the slide rail 10, the ball 16 is embedded on the outer side of the sliding assembly 15, and the inner wall of the slide rail 10 is provided with a groove matched with the ball 16;

[0033] Specifically, the first interlayer 801 and the third interlayer 804 can reduce the temperature transfer efficiency, and the ball 16 can improve the smoothness of the sliding plate 11 moving on the slide rail 10 by means of the sliding assembly 15.

[0034] The working principle and use process of the utility model are as follows: during actual use, the device is placed in a suitable position and connected with an external power supply, the electrical equipment on the device is powered on, first, the release agent is applied to the inner side surfaces of the two dry test molds 6 and the side mold 7, and the test molds 6 and the side mold 7 are installed on the base plate 5, the asphalt test sample is slowly injected from one end of the test mold 6 to the other end and back several times, finally, the asphalt test sample is slightly higher than the test mold 6, attention should be paid to prevent air bubbles from being mixed, the asphalt test sample is cooled at room temperature for 30-40 minutes, then is placed in a constant-temperature water tank with a specified test temperature of 0.1 DEG C, is taken out after being kept for 30 minutes, and the asphalt higher than the test mold 6 is scraped off by using a hot scraper, so that the asphalt is flush with the test mold 6;

[0035] The test mold 6 and the base plate 5 are immersed in the water tank with the specified test temperature for 1-1.5 hours, then water is added into the upper water tank 9 and the lower water tank 8, the water in the lower water tank 8 enters the upper water tank 9 under the action of the through hole 14, and the water temperature is controlled to reach the experimental temperature ±0.5 DEG C by means of the heating pipe 806, the asphalt test sample and the base plate 5 are moved into the upper water tank 9, then the test mold 6 containing the test sample is taken off the base plate 5, the holes at the two ends of the test mold 6 are respectively sleeved on the sliding plate 11 and the metal column 13 at the end of the upper water tank 9, the side mold 7 is taken off, and the water surface should be kept at a distance of not less than 25 mm from the surface of the asphalt test sample;

[0036] The starting motor 4 drives the screw rod 12 to rotate, and the sliding plate 11 is driven by the screw rod 12 to slide on the slide rail 10 through the sliding assembly 15, so that the sliding plate 11 moves away from the end of the upper water tank 9, and the two groups of test molds 6 gradually move away from the stretched asphalt during the process. When the asphalt test piece is pulled off, the asphalt test piece should be tapered when stretched, and the actual cross section is close to zero when pulled off. Then the detection data of the reading device can be obtained to obtain the ductility of the asphalt test piece. When the water in the lower water tank 8 is heated, the heating pipe 806 is started by the control device 2, and the heating pipe 806 directly heats from the bottom of the lower water tank 8. The second interlayer 803 and the third interlayer 804 in the lower water tank 8 and the upper water tank 9 make the water temperature in the lower water tank 8 need to contact the air in the second interlayer 803 and the third interlayer 804 when transmitting outward. Compared with the heat transfer effect of metal material, the temperature transfer efficiency is effectively reduced, and the aerogel body 802 can effectively block the temperature and effectively reduce the loss of temperature, reduce the starting frequency of the heating pipe 806, realize the energy-saving effect, and the sliding plate 11 moves on the slide rail 10. The setting of the ball bearing 16 can reduce the contact area of the sliding assembly 15 and the slide rail 10. The ball bearing 16 in the rolling state effectively improves the smoothness of the sliding plate 11 moving on the slide rail 10 through the sliding assembly 15, and the pulling-off time of the asphalt test piece is more accurate, and the accuracy of the actual experimental data is guaranteed.

[0037] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application, for the person skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A constant temperature tensile test tank for asphalt ductility tester, comprising a main body (1), a bottom plate (5), a control device (2) arranged on the main body (1), a glass cover (3) arranged on the top of the main body (1), and a motor (4) arranged on the outside of the main body (1), characterized in that: The bottom plate (5) is provided with a test mold (6), the test mold (6) is provided with a side mold (7), the main body (1) is provided with a lower water tank (8), the lower water tank (8) is provided with an upper water tank (9), the upper water tank (9) is provided with a slide rail (10) on both sides of the top, the slide rail (10) is provided with a sliding assembly (15), the sliding assembly (15) is provided with a sliding plate (11) on the top, the sliding plate (11) is provided with a screw rod (12) at both ends, the sliding plate (11) is provided with a metal column (13) in the middle, the upper water tank (9) is provided with a through hole (14) on the inner side, the sliding assembly (15) and the slide rail (10) are provided with a ball (16). The lower water tank (8) comprises a first interlayer (801), aerogel (802), a second interlayer (803), a third interlayer (804), a bottom cavity (805) and a heating pipe (806), the first interlayer (801) is filled with aerogel (802), the bottom cavity (805) is provided with a heating pipe (806) inside.

2. The constant temperature tensile test bath for asphalt ductility apparatus of claim 1, wherein: The bottom plate (5) is matched with the test mold (6), the test mold (6) has two groups and is symmetrical, and two groups of the test mold (6) are provided with two groups of symmetrical side molds (7).

3. The constant temperature tensile test bath for asphalt ductility apparatus of claim 1, wherein: The lower water tank (8) is provided with an upper water tank (9), the upper water tank (9) is provided with a through hole (14), the sliding assembly (15) is installed in the slide rail (10) and matched with the slide rail (10).

4. The constant temperature tensile test bath for asphalt ductility apparatus of claim 1, wherein: The sliding plate (11) is fixedly installed on the top of the sliding assembly (15), three groups of the metal columns (13) are equidistantly fixedly installed in the middle of the sliding plate (11), and one end of the upper water tank (9) is provided with three groups of symmetrical metal columns (13).

5. The constant temperature tensile test bath for asphalt ductility apparatus of claim 1, wherein: One end of the screw rod (12) is rotatably installed in the inner wall of the main body (1), the other end of the screw rod (12) penetrates through the end of the sliding plate (11) and extends out of the main body (1) and is connected with the output end of the motor (4), and the screw rod (12) and the end of the sliding plate (11) are threadedly connected.

6. The constant temperature tensile test bath for asphalt ductility apparatus of claim 1, wherein: The specifications of the first interlayer (801), the second interlayer (803) and the third interlayer (804) are consistent, and the heating pipe (806) is fixedly installed in the bottom cavity (805).

7. The constant temperature tensile test bath for asphalt ductility apparatus of claim 1, wherein: There is a gap between the sliding assembly (15) and the slide rail (10), the ball (16) is embedded on the outer side of the sliding assembly (15), and the inner wall of the slide rail (10) is provided with a groove matched with the ball 16.

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