Asphalt mixture low-temperature splitting tester

Abstract

The utility model relates to the technical field of auxiliary equipment, and discloses an asphalt mixture low-temperature splitting tester which comprises a temperature control box, a controller is fixedly mounted at the top of the temperature control box, a circuit box is fixedly mounted at the bottom of the temperature control box, an extrusion plate is arranged on the inner wall of the circuit box, a support is fixedly mounted on the inner wall of the controller, and the extrusion plate is fixedly mounted on the inner wall of the support. A mounting plate is placed on the inner wall of the temperature control box, and a limiting plate is fixedly mounted at the top of the mounting plate. According to the low-temperature splitting tester for the asphalt mixture, through the arrangement of the limiting plate, a tester can operate the clamp with one hand, the operation difficulty is reduced, the test efficiency is improved, errors caused by human factors when the clamp is used are avoided, and the clamping plate with a large contact surface can better restrain deformation of a test piece and disperse stress on the test piece; the phenomenon of stress concentration is reduced, the test piece is prevented from being damaged at the clamp, and the accuracy of a test result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary equipment, in particular to an asphalt mixture low-temperature splitting tester. Background Art

[0002] Asphalt mixtures become more brittle and prone to cracking when the temperature drops. In order to evaluate the low-temperature crack resistance of asphalt mixtures, a special test instrument is required for testing. The asphalt mixture specimen is fixed by a fixture, and a splitting force is applied along the diameter of the specimen under specified low-temperature conditions to simulate the splitting situation in actual use. Therefore, the fixture needs to have sufficient stability to ensure the accuracy and reliability of the test results.

[0003] Chinese patent publication number CN2852105Y discloses an asphalt mixture low-temperature splitting tester, which includes an electric motor with a gear installed or a hydraulic motor connected to a hydraulic pump through a conduit, a computer, an environmental chamber connected to an upper mounting plate, and a reaction bracket inserted into the environmental chamber. The lower bottom surface of the upper mounting plate is provided with a push rod guide sleeve. A refrigeration mechanism is provided on the bracket and in the environmental chamber. A heating pipe, an A / D converter, and a temperature sensor are provided in the environmental chamber. A push rod is provided in the environmental chamber, the upper end of which is connected to the fixture base plate as a whole and the lower part of which is processed with a rack and a gear meshing. A left fixture and a right fixture and a vertical displacement sensor bracket equipped with a vertical displacement sensor are provided on the fixture base plate. A horizontal displacement sensor overlapped with a limit block is provided on the left fixture or the right fixture. A force sensor is provided on the reaction bracket, the lower end of which is connected to a load frame. The vertical displacement sensor is located in the load frame. The tester has the advantages of reasonable design, accurate measured data, and a high degree of automation, and can be used to test the low-temperature crack resistance of asphalt mixtures.

[0004] However, the utility model has the following problems when actually used:

[0005] When the utility model is actually used, the clamp operation process is relatively cumbersome, and the contact surface of the clamp is small, resulting in stress concentration, making the test piece more likely to be damaged at the clamp, affecting the reliability of the test results. Utility Model Content

[0006] (1) Technical problems solved

[0007] In order to overcome the above-mentioned defects of the prior art, the utility model provides an asphalt mixture low temperature splitting tester, which solves the problems in the prior art:

[0008] In actual use, the clamp operation process of this utility model is relatively cumbersome, and the contact surface of the clamp is small, which leads to stress concentration, making the test piece more likely to be damaged at the clamp, affecting the reliability of the test results.

[0009] (2) Technical solution

[0010] To achieve the above objectives, the utility model is implemented through the following technical solutions: an asphalt mixture low-temperature splitting tester, including a temperature control box, a controller fixedly installed on the top of the temperature control box, a circuit box fixedly installed on the bottom of the temperature control box, an extrusion plate provided on the inner wall of the circuit box, a bracket fixedly installed on the inner wall of the controller, a mounting plate placed on the inner wall of the temperature control box, and a limit plate fixedly installed on the top of the mounting plate.

[0011] According to one embodiment of the present invention, a shielding door is detachably connected to one side of the temperature control box, and an extrusion opening is provided at the bottom of the inner wall of the temperature control box.

[0012] According to one embodiment of the present invention, a temperature control button is fixedly mounted on the outer surface of the controller, and a display screen is fixedly mounted on the outer surface of the controller.

[0013] According to an embodiment of the present invention, an inspection door is fixedly installed on one side of the circuit box, and a base is fixedly installed on the bottom of the circuit box.

[0014] According to one embodiment of the present invention, a telescopic rod is fixedly installed on the bottom of the extrusion plate, a connecting plate is fixedly installed on the bottom of the telescopic rod, and the bottom of the connecting plate is threadedly connected to the bottom of the inner wall of the circuit box.

[0015] According to an embodiment of the present invention, a fixing sleeve is inserted through the top of the bracket, and a splitting strip is inserted through the middle of the fixing sleeve.

[0016] According to one embodiment of the present invention, a column is inserted into the top of the mounting plate, and a pressure plate is inserted through the top of the column.

[0017] According to an embodiment of the present invention, a side wall of the limiting plate is threadedly connected to a knob, and a clamping plate is inserted into one end of the knob.

[0018] (3) Beneficial effects

[0019] The utility model provides an asphalt mixture low temperature splitting tester, which has the following beneficial effects:

[0020] The asphalt mixture low-temperature splitting tester, through the setting of the limit plate, allows the tester to operate the clamp with one hand, reducing the difficulty of operation and improving the test efficiency, avoiding errors caused by human factors when using the clamp, and the clamp with a large contact surface can better restrain the deformation of the specimen, disperse the stress on the specimen, reduce the stress concentration phenomenon, help prevent the specimen from being damaged at the clamp, improve the accuracy of the test results, ensure the stability of the specimen on the clamp, prevent the specimen from being displaced during the experiment, thereby ensuring the accuracy of the test results. The stable clamp can also reduce vibration and noise during the test, preventing vibration from interfering with the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the control box structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the circuit box structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the temperature control box of the utility model;

[0025] Figure 5 This is a schematic diagram of the support structure of the utility model;

[0026] Figure 6 This is a schematic diagram of the limit plate structure of the utility model.

[0027] In the figure: 1. Temperature control box; 2. Controller; 3. Circuit box; 4. Extrusion plate; 5. Bracket; 6. Mounting plate; 7. Limit plate; 8. Shielding door; 9. Extrusion port; 10. Temperature control button; 11. Display screen; 12. Inspection door; 13. Base; 14. Telescopic rod; 15. Connecting plate; 16. Fixing sleeve; 17. Splitting strip; 18. Column; 19. Pressure plate; 20. Knob; 21. Clamp. DETAILED DESCRIPTION

[0028] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Example 1:

[0030] See also Figures 1 to 4 , in order to enable the device to control the temperature and perform the splitting test, a temperature control box 1, a controller 2 and a circuit box 3 are provided;

[0031] It includes a temperature control box 1, a controller 2 is fixedly installed on the top of the temperature control box 1, a circuit box 3 is fixedly installed on the bottom of the temperature control box 1, a shielding door 8 is detachably connected to one side of the temperature control box 1, an extrusion port 9 is opened at the bottom of the inner wall of the temperature control box 1, a temperature control button 10 is fixedly installed on the outer surface of the controller 2, a display screen 11 is fixedly installed on the outer surface of the controller 2, an inspection door 12 is fixedly installed on one side of the circuit box 3, and a base 13 is fixedly installed on the bottom of the circuit box 3. Therefore, the shielding door 8 is used to observe the internal state of the temperature control box 1, the extrusion port 9 is used for allowing the extrusion plate 4 to pass through and apply an upward thrust to the mounting plate 6, the temperature control button 10 is used to set the test temperature, the display screen 11 is used to display the test status and provide experimental data, the inspection door 12 is used to inspect and repair the circuit system, and the base 13 is used to support the entire tester to ensure stability. The temperature control button 10 and the display screen 11 are connected to an external power supply and are controlled to be turned on or off by a switch.

[0032] Example 2:

[0033] See also Figure 3 , in order to facilitate the application of pressure to the asphalt mixture used in the test, an extrusion plate 4 is provided;

[0034] The inner wall of the circuit box 3 is provided with an extrusion plate 4, and a telescopic rod 14 is fixedly installed at the bottom of the extrusion plate 4. A connecting plate 15 is fixedly installed at the bottom of the telescopic rod 14. The bottom of the connecting plate 15 is threadedly connected to the bottom of the inner wall of the circuit box 3. Therefore, the telescopic rod 14 is used to drive the extrusion plate 4 to move up and down and apply a pushing force. The connecting plate 15 is used to connect the telescopic rod 14 to the bottom of the inner wall of the circuit box 3 to ensure stable transmission.

[0035] Example 3:

[0036] See also Figures 4 to 6 , in order to be able to fasten the asphalt mixture used in the test to simulate the splitting situation in actual use, a bracket 5, a mounting plate 6 and a limit plate 7 are provided;

[0037] A bracket 5 is fixedly installed on the inner wall of the controller 2, and a mounting plate 6 is placed on the inner wall of the temperature control box 1. A limiting plate 7 is fixedly installed on the top of the mounting plate 6. A fixing sleeve 16 is inserted through the top of the bracket 5, and a splitting strip 17 is inserted through the middle of the fixing sleeve 16. A column 18 is inserted on the top of the mounting plate 6, and a pressure plate 19 is inserted through the top of the column 18. A knob 20 is threadedly connected to the side wall of the limiting plate 7, and a splint 21 is inserted at one end of the knob 20. Therefore, the fixing sleeve 16 is used to support the splitting strip 17, and the splitting strip 17 is used to make the specimen split and destroyed in the diameter direction after being subjected to force. The column 18 is used to make the pressure plate 19 move up and down along the column 18. The pressure plate 19 is installed and used when testing the compressive effect of the test specimen. The knob 20 is used to adjust the tightness of the splint 21 to fix the specimen. The splint 21 is used to cooperate with the limiting plate 7 to clamp the specimen to prevent the specimen from displacement.

[0038] The electrical components mentioned in this article are all connected to an external main controller and 220V AC power, and the main controller can be a conventional known device that performs control such as a computer.

[0039] In the present invention, the working steps of the device are as follows:

[0040] First, place the asphalt mixture specimen on the limit plate 7, adjust the clamping plate 21 by turning the knob 20 to clamp the specimen to prevent displacement, place the mounting plate 6 on the top of the extrusion port 9, close the shielding door 8, set the internal temperature of the temperature control box 1 through the temperature control button 10 on the controller 2, and start the test. When the temperature reaches the set value after a certain time, start the telescopic rod 14, drive the extrusion plate 4 to push the mounting plate 6 through the extrusion port 9, so that the splitting strip 17 acts on the specimen to produce a splitting effect. After the test, open the shielding door 8, take out the specimen, observe and record the test results.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An asphalt mixture low temperature splitting tester, comprising a temperature control box (1), characterized in that: A controller (2) is fixedly mounted on the top of the temperature control box (1), a circuit box (3) is fixedly mounted on the bottom of the temperature control box (1), an extrusion plate (4) is provided on the inner wall of the circuit box (3), a bracket (5) is fixedly mounted on the inner wall of the controller (2), a mounting plate (6) is placed on the inner wall of the temperature control box (1), and a limit plate (7) is fixedly mounted on the top of the mounting plate (6).

2. The asphalt mixture low temperature splitting tester according to claim 1, characterized in that: A shielding door (8) is detachably connected to one side of the temperature control box (1), and an extrusion opening (9) is provided at the bottom of the inner wall of the temperature control box (1).

3. The asphalt mixture low temperature splitting tester according to claim 1, characterized in that: A temperature control button (10) is fixedly mounted on the outer surface of the controller (2), and a display screen (11) is fixedly mounted on the outer surface of the controller (2).

4. The asphalt mixture low temperature splitting tester according to claim 1, characterized in that: An inspection door (12) is fixedly mounted on one side of the circuit box (3), and a base (13) is fixedly mounted on the bottom of the circuit box (3).

5. The asphalt mixture low temperature splitting tester according to claim 1, characterized in that: A telescopic rod (14) is fixedly mounted on the bottom of the extrusion plate (4), a connecting plate (15) is fixedly mounted on the bottom of the telescopic rod (14), and the bottom of the connecting plate (15) is threadedly connected to the bottom of the inner wall of the circuit box (3).

6. The asphalt mixture low temperature splitting tester according to claim 1, characterized in that: A fixing sleeve (16) is inserted through the top of the bracket (5), and a splitting strip (17) is inserted through the middle of the fixing sleeve (16).

7. The asphalt mixture low temperature splitting tester according to claim 1, characterized in that: A column (18) is inserted into the top of the mounting plate (6), and a pressure plate (19) is inserted through the top of the column (18).

8. The asphalt mixture low temperature splitting tester according to claim 1, characterized in that: A knob (20) is threadedly connected to one side wall of the limiting plate (7), and a clamping plate (21) is inserted into one end of the knob (20).

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