Asphalt pavement low-temperature crack resistance testing device

Abstract

The utility model provides an asphalt pavement low-temperature crack resistance test device, which belongs to the technical field of asphalt detection and comprises a detection box, a detection cavity arranged at the top of the detection box, a detection seat arranged at the top of the inner wall of the detection cavity, an experiment limiting groove arranged at the top of the detection seat, and a pressure detection plate arranged at the top of the inner wall of the experiment limiting groove. First hydraulic rods are arranged on the two sides of the inner wall of the detection cavity, a supporting table is arranged at the bottoms of the first hydraulic rods, second hydraulic rods are arranged on the two sides of the bottom of the supporting table, circular pressing plates are hinged to the bottoms of the second hydraulic rods, a refrigerator is embedded in the bottom of the detection box, and a conveying pipe is arranged on the top of the refrigerator; according to the asphalt pavement low-temperature crack resistance testing device, the supporting table is pressed downwards through the first hydraulic rod, at the moment, the second hydraulic rod below the supporting table stretches out and draws back mutually in the left-right direction, and the circular pressing plate forms an inclined rolling state to simulate the stress state of a tire in the driving process.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bitumen detection technical field, and specifically relates to a bituminous pavement low temperature crack resistance testing device. BACKGROUND

[0002] The "bitumen low temperature anti-cracking performance testing device" disclosed by the application number "CN202021313295.5" reaches the required low-temperature environment of the test chamber through the refrigerator and the condenser, the moving plate is lowered through the electric telescopic rod, the gap load between the pressure head and the test piece is loaded and unloaded, the pressure signal borne by the test piece is received through the pressure sensor, the pressure signal is transmitted to the controller, the controller is transmitted to the data processor, the pressure data is analyzed by the data processor, and the analyzed information is displayed on the display screen through the controller, which is a mature technology, but the device still has the following defects: when the low-temperature crack resistance of bitumen is adapted, although the surface of the bitumen can be detected through the pressure head, the driving direction of the tire is different, and the driving state of the wheel on the road cannot be effectively simulated. UTILITY MODEL CONTENT

[0003] The utility model aims at providing a bituminous pavement low temperature crack resistance testing device, and aims at solving the problems in the background art.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: including detection box, the detection box top is equipped with detection cavity, the detection cavity inner wall top is equipped with detection seat, the detection seat top is equipped with experiment limiting slot, the experiment limiting slot inner wall top is equipped with pressure detection plate, the experiment limiting slot is equipped with bitumen placing plate in, the detection cavity inner wall both sides are equipped with first hydraulic rod, the first hydraulic rod bottom is equipped with support station, the support station bottom both sides are equipped with second hydraulic rod, the second hydraulic rod bottom is hinged and has round pressing plate, the detection box bottom is embedded and is equipped with refrigerator, the refrigerator top is equipped with delivery pipe, the delivery pipe one end sealed communication in the detection box inner wall one side.

[0005] In the bituminous pavement low temperature crack resistance testing device embodiment of the utility model, the detection cavity inner wall top one side is equipped with first temperature detector.

[0006] In the scheme, the detection cavity inside is cooled through the refrigerator, the environmental temperature where the bottom bitumen is located under the low-temperature environment is simulated, the cracking degree of the bitumen under different low-temperature environments is conveniently detected, the support station is pressed down through the first hydraulic rod, the second hydraulic rod below stretches left and right to each other at this time, the round pressing plate is linked and raised, the round pressing plate forms the inclined rolling state, the first hydraulic rod and the second hydraulic rod simulate the stress state of the tire in the driving process, and the cracking degree of the bitumen is conveniently detected.

[0007] The utility model discloses a kind of asphalt pavement low-temperature crack resistance test device implementation schemes, second temperature detector is embedded in the one side of asphalt placing plate, power groove is arranged in the one side of experimental limiting groove inner wall, second temperature detector is engaged in power groove.

[0008] In the present scheme, after installing asphalt placing plate in experimental limiting groove, second temperature detector detects asphalt temperature in asphalt placing plate, compares the environmental temperature detected by first temperature detector, improves the data accuracy of asphalt in low-temperature environment.

[0009] In the utility model discloses a kind of asphalt pavement low-temperature crack resistance test device implementation schemes, the inner wall of asphalt placing plate is equipped with antiseize membrane.

[0010] In the present scheme, by antiseize membrane inside asphalt placing plate, avoid asphalt residue to be adhered in asphalt placing plate inside, facilitate the cleaning of extruded asphalt.

[0011] In the utility model discloses a kind of asphalt pavement low-temperature crack resistance test device implementation schemes, the top four corners of asphalt placing plate are equipped with clamping block, the top four corners of experimental limiting groove inner wall are equipped with clamping groove, the clamping block is engaged in clamping groove.

[0012] In the present scheme, when installing asphalt placing plate, connect corresponding clamping groove in experimental limiting groove inside with clamping block, fix the position of asphalt placing plate, avoid asphalt rolling asphalt placing plate displacement.

[0013] In the utility model discloses a kind of asphalt pavement low-temperature crack resistance test device implementation schemes, second temperature detector is embedded in the one side of asphalt placing plate, power groove is arranged in the one side of experimental limiting groove inner wall, second temperature detector is engaged in power groove.

[0014] In the present scheme, by antiseize membrane inside asphalt placing plate, avoid temperature imbalance, improve data detection stability.

[0015] Compared with prior art, the utility model has the advantages that:

[0016] 1) by first hydraulic rod down pressure support platform, second hydraulic rod left and right each other telescopic under this time, linkage tilts round pressing plate, round pressing plate forms oblique rolling state, first hydraulic rod and second hydraulic rod, simulate the stress state of tire in driving process, pressure detection plate detects stress point pressure, convenient for detecting asphalt cracking degree.

[0017] 2) the refrigerating machine is equipped with and is cooled to the inside of detection cavity, simulates the environmental temperature of bottom surface asphalt under low-temperature environment, convenient for detecting the cracking degree of asphalt in different low-temperature environment, second temperature detector detects asphalt temperature in asphalt placing plate, compares the environmental temperature detected by first temperature detector, improves the data accuracy of asphalt in low-temperature environment. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are used to provide further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation to the present application. In the drawings:

[0019] Figure 1 It is a structural schematic view of the present application;

[0020] Figure 2 It is a sectional structural schematic view of the present application;

[0021] Figure 3 It is a structural schematic view of the measuring rod of the present application.

[0022] In the drawings: 1, detection box; 2, detection cavity; 3, detection seat; 4, experimental limiting groove; 5, pressure detection plate; 6, asphalt placing plate; 7, first hydraulic rod; 8, supporting table; 9, second hydraulic rod; 10, circular pressing plate; 11, refrigerator; 12, conveying pipe; 13, first temperature detector; 14, second temperature detector; 15, electrifying groove; 16, clamping block; 17, clamping groove; 18, heat preservation layer. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Please refer to Figures 1-3 The present application provides the following technical solutions: an asphalt pavement low-temperature crack resistance test device.

[0025] In a specific embodiment of the asphalt pavement low-temperature crack resistance test device, please refer to the drawings: the device comprises a detection box 1, the top of the detection box 1 is provided with a detection cavity 2, the inner wall of the detection cavity 2 is provided with a detection seat 3 at the top, the top of the detection seat 3 is provided with an experimental limiting groove 4, the inner wall of the experimental limiting groove 4 is provided with a pressure detection plate 5 at the top, the experimental limiting groove 4 is provided with an asphalt placing plate 6, the two sides of the inner wall of the detection cavity 2 are provided with first hydraulic rods 7, the bottom of the first hydraulic rods 7 is provided with a supporting table 8, the bottom of the supporting table 8 is provided with second hydraulic rods 9 on both sides, the bottom of the second hydraulic rods 9 is hingedly connected with a circular pressing plate 10, the bottom of the detection box 1 is embedded with a refrigerator 11, the top of the refrigerator 11 is provided with a conveying pipe 12, one end of the conveying pipe 12 is sealingly communicated with one side of the inner wall of the detection box 1.

[0026] In a specific embodiment of the asphalt pavement low-temperature crack resistance test device, please refer to Figure 2The top side of the inner wall of the detection cavity 2 is provided with a first temperature detector 13.

[0027] Please refer to Figure 2 : The inside of the detection cavity 2 is cooled by the refrigerator 11 to simulate the environmental temperature of the asphalt on the bottom surface in a low-temperature environment, which facilitates the detection of the cracking degree of the asphalt in different low-temperature environments. The second hydraulic rod 9 below is extended and retracted left and right, and the circular pressing plate 10 is linked and raised. The first hydraulic rod 7 and the second hydraulic rod 9 simulate the stress state of the tire in the driving process, which facilitates the detection of the cracking degree of the asphalt

[0028] In a specific embodiment of the asphalt pavement low-temperature cracking resistance test device, please refer to Figure 3 : The asphalt placing plate 6 is provided with a second temperature detector 14 on one side, and the inner wall of the experimental limiting groove 4 is provided with an electrified groove 15 on one side. The second temperature detector 14 is clamped and connected in the electrified groove 15.

[0029] Please refer to Figure 3 : After the asphalt placing plate 6 is installed in the experimental limiting groove 4, the second temperature detector 14 detects the temperature of the asphalt in the asphalt placing plate 6, and the first temperature detector 13 detects the environmental temperature, which improves the data accuracy of the asphalt in the low-temperature environment.

[0030] In a specific embodiment of the asphalt pavement low-temperature cracking resistance test device, please refer to Figure 3 : The inner wall of the asphalt placing plate 6 is provided with an anti-sticking film.

[0031] Please refer to Figure 3 : The anti-sticking film inside the asphalt placing plate 6 avoids the adhesion of asphalt residues inside the asphalt placing plate 6, which facilitates the cleaning of the extruded asphalt.

[0032] In a specific embodiment of the asphalt pavement low-temperature cracking resistance test device, please refer to Figure 3 : The top of the asphalt placing plate 6 is provided with a clamping block 16, and the inner wall of the experimental limiting groove 4 is provided with a clamping groove 17. The clamping block 16 is clamped and connected in the clamping groove 17.

[0033] Please refer to Figure 3 : When installing the asphalt placing plate 6, the clamping block 16 is connected with the corresponding clamping groove 17 inside the experimental limiting groove 4, and the position of the asphalt placing plate 6 is fixed to avoid displacement of the asphalt rolling asphalt placing plate 6.

[0034] In a specific embodiment of the asphalt pavement low-temperature cracking resistance test device, please refer to Figure 1 : The detection cavity 2 is embedded with a heat preservation layer 18.

[0035] Please refer to Figure 1The temperature imbalance is avoided by detecting the heat preservation layer 18 inside the cavity 2, and the data detection stability is improved.

[0036] The asphalt is placed in the asphalt placing plate 6, the clamping block 16 is connected with the corresponding clamping groove 17 in the experiment limiting groove 4, the position of the asphalt placing plate 6 is fixed, the displacement of the asphalt rolling type asphalt placing plate 6 is avoided, the inside of the detection cavity 2 is cooled by the refrigerator 11, the environment temperature of the bottom asphalt under the low temperature environment is simulated, the cracking degree of the asphalt under different low temperature environments is conveniently detected, the first hydraulic rod 7 is pressed down to support the table 8, the second hydraulic rod 9 below is telescopic left and right, the circular pressing plate 10 is linked and raised, the circular pressing plate 10 forms an inclined rolling state, the first hydraulic rod 7 and the second hydraulic rod 9 simulate the stress state of the tire in the driving process, the cracking degree of the asphalt is conveniently detected, the first hydraulic rod 7 can also be unidirectionally forced, the two second hydraulic rods 9 are at the same height, and the stress point is concentrated and pressed for detection, after the asphalt placing plate 6 is installed in the experiment limiting groove 4, the second temperature detector 14 detects the asphalt temperature in the asphalt placing plate 6, the environment temperature detected by the first temperature detector 13 is compared, and the data accuracy of the asphalt under the low temperature environment is improved.

[0037] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part technical features. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A device for testing low-temperature crack resistance of asphalt pavement, comprising a detection box (1), characterized in that: The detecting box (1) top is provided with detecting cavity (2), the detecting cavity (2) inner wall top is equipped with detection seat (3), the detection seat (3) top is provided with experimental limiting slot (4), the experimental limiting slot (4) inner wall top is equipped with pressure detection plate (5), the experimental limiting slot (4) is equipped with pitch placement board (6), the detecting cavity (2) inner wall both sides are equipped with first hydraulic rod (7), the first hydraulic rod (7) bottom is equipped with support table (8), the support table (8) bottom both sides are equipped with second hydraulic rod (9), the second hydraulic rod (9) bottom is hinged with circular pressing plate (10), the detecting box (1) bottom is embedded with refrigerator (11), the refrigerator (11) top is equipped with delivery pipe (12), the delivery pipe (12) one end sealed communication in detecting box (1) inner wall one side.

2. The low-temperature cracking resistance test device for asphalt pavement according to claim 1, characterized in that: The detecting cavity (2) inner wall top one side is equipped with first temperature detector (13).

3. The apparatus for testing low-temperature cracking resistance of asphalt pavement according to claim 1, characterized in that: The pitch placement board (6) one side is embedded with second temperature detector (14), the experimental limiting slot (4) inner wall one side is provided with electrification groove (15), the second temperature detector (14) is engaged in electrification groove (15) in.

4. The apparatus for testing low-temperature cracking resistance of asphalt pavement according to claim 1, characterized in that: The pitch placement board (6) inner wall is equipped with anti-sticking film.

5. The apparatus for testing low temperature cracking resistance of asphalt pavement according to claim 1, characterized in that: The pitch placement board (6) top four corners are equipped with clamping block (16), and the experimental limiting slot (4) inner wall top four corners are equipped with clamping groove (17), and the clamping block (16) is engaged in clamping groove (17) in.

6. The apparatus for testing low-temperature cracking resistance of asphalt pavement according to claim 1, characterized in that: The detecting cavity (2) is embedded with heat preservation layer (18).

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