Emulsified asphalt wheel sticking performance testing device

Abstract

The utility model relates to the technical field of asphalt pavements in road engineering, in particular to an emulsified asphalt wheel sticking performance testing device, which comprises a hollow rut test bed, the rut plate test piece is positioned at the bottom of the rut test bed; the fixing assemblies are fixed at the two ends of the rut test bed; the wheels are located between the two fixing assemblies. Wherein the fixing assembly comprises a square U-shaped plate with a downward opening and screws and nuts which are used for fixing the square U-shaped plate, a rubber pad is further arranged between the fixing assembly and the rut test bed, and the rubber pad extends to the position between the rut test bed at the other end and the fixing assembly. The rut test bed has the beneficial effects that the rubber pad is arranged on the rut test bed, so that the contact between a wheel and asphalt is reduced, and the cost loss caused by corrosion due to direct contact between the wheel and the asphalt is effectively avoided under the condition that the test is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt pavement in road engineering, in particular to a device for testing the wheel adhesion performance of emulsified asphalt. Background Art

[0002] With the vigorous development of highway construction in my country, people have gradually realized that the development of emulsified asphalt is an economical and environmentally friendly way to solve road maintenance problems. Compared with traditional hot asphalt, emulsified asphalt has many advantages, such as saving resources and energy, improving construction conditions, reducing environmental pollution, improving working conditions, and expanding the scope of asphalt use. However, in actual application, during the subsequent construction process after the emulsified asphalt is spread, engineering vehicles drive on the road surface covered with emulsified asphalt, causing the emulsified asphalt bonding layer to be crushed by the construction vehicles, and then the wheels adhere to the surface. This causes the emulsified asphalt layer on the road surface to be partially missing, and the bonding performance between the subsequent paving layers is reduced, which increases the possibility of interlayer detachment and slippage.

[0003] In response to the above problems, scholars from various countries have proposed to modify emulsified asphalt to improve its high temperature performance and mechanical properties, achieve the effect of non-stick wheels during the rolling of construction equipment and vehicle driving, improve construction efficiency, and reduce the impact of maintenance construction on daily traffic. However, there is currently no unified testing method for how to test the wheel-sticking performance of non-stick emulsified asphalt. Conventional testing is carried out through non-stick hands, non-stick paper, etc., which has certain human errors; some testing devices are complicated in operation and testing process due to their particularity, difficult to operate, and not economical. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a device for testing the wheel adhesion performance of emulsified asphalt, which effectively solves the problems in the background technology.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a device for testing the adhesion performance of emulsified asphalt wheels, comprising:

[0006] A rutting test bench with a hollow interior;

[0007] a rutting plate specimen located at the bottom of the rutting test bench;

[0008] A fixing assembly fixed at both ends of the rutting test bench;

[0009] A wheel, located between the two sets of the fixed components;

[0010] The fixing assembly includes a square U-plate with an opening facing downward and screws and nuts for fixing the square U-plate. A rubber pad is also provided between the fixing assembly and the rutting test bench, and the rubber pad extends between the rutting test bench at the other end and the fixing assembly.

[0011] Furthermore, circular fixing buckles are evenly arranged on the top of the square U-plate.

[0012] Furthermore, a through hole is provided on the outer side of the square U-plate, and the screw passes through the through hole from the inner side and is connected with the nut on the outer side.

[0013] Furthermore, the front-to-rear width of the rubber pad is slightly larger than the width of the wheel, and the length is such that the rubber pad just contacts the rutting plate specimen when stationary.

[0014] Furthermore, the rubber pad has squares of 0.5-2 cm engraved on a side facing the rutting plate specimen.

[0015] Furthermore, the rubber pad is a white rubber pad.

[0016] Furthermore, the wheels are controlled by a driving mechanism located above the rutting test bench.

[0017] Furthermore, a groove is provided on the upper portion of the rutting plate specimen.

[0018] The beneficial effect of the utility model is that by arranging the rubber pad on the rutting test bench, the contact between the wheel and the asphalt is reduced. Without affecting the test, the loss caused by the corrosion of the wheel due to the direct contact with the asphalt is effectively avoided, which not only reduces the wear of the wheel and extends the service life of the wheel, but also reduces the cost loss caused by replacing the wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the structure of the device for testing the wheel adhesion performance of emulsified asphalt in an embodiment of the utility model;

[0021] Figure 2 It is a front view of the fixing assembly in the embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of a square U-plate in an embodiment of the utility model.

[0023] Figure numerals: 1. rutting test bench; 2. rutting plate specimen; 3. fixing assembly; 31. square U-plate; 311. fixing buckle; 312. through hole; 32. screw; 33. nut; 4. wheel; 5. rubber pad; 6. driving mechanism. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] like Figures 1 to 3 The emulsified asphalt wheel adhesion performance testing device shown includes: a rutting test bench 1 with a hollow interior; a rutting plate specimen 2 located at the bottom of the rutting test bench 1; fixing components 3 fixed at both ends of the rutting test bench 1; a wheel 4 located between the two sets of fixing components 3; wherein the fixing component 3 includes a square U-plate 31 with an opening facing downward and screws 32 and nuts 33 for fixing the square U-plate 31, and a rubber pad 5 is also provided between the fixing component 3 and the rutting test bench 1, and the rubber pad 5 extends between the rutting test bench 1 and the fixing component 3 at the other end.

[0028] The implementation process of the utility model is to evenly spread the non-stick wheel emulsified asphalt in the groove on the rutting plate specimen 2 according to the technical requirements, put the rutting plate specimen 2 into the rutting test bench 1, and fix the position of the rutting plate specimen 2 according to the requirements of the rutting test, install the fixing component 3 on both sides perpendicular to the movement direction of the wheel 4, and the groove of the square U-plate 31 is inserted into the rutting test bench 1, rotate the nut 33, and adjust the distance between the nut 33 and the screw 32 to fix the fixing component 3 on the rutting test bench 1, and fix the rubber pad 5 with the fixing buckle 311. When the wheel 4 starts to move, the rubber pad 5 is rolled onto the rutting plate specimen 2, and the non-stick wheel emulsified asphalt spread on the rutting plate specimen 2 will adhere to the side of the rubber pad 5 with squares. The adhesion performance of the non-stick wheel emulsified asphalt can be judged according to the adhesion of the non-stick wheel emulsified asphalt on the rubber pad 5.

[0029] In the present invention, circular fixing buckles 311 are evenly arranged on the top of the square U-plate 31. The circular fixing buckles 311 provide a quick and firm fixing method, which can quickly fix the rubber pad 5. Since there are multiple evenly distributed fixing buckles 311 on the top of the square U-plate 31, all or part of the buckles can be selected as needed to adapt to different fixing requirements. The evenly distributed fixing buckles 311 can ensure that the rubber pad 5 can evenly distribute stress when subjected to force, thereby avoiding damage caused by excessive local stress. A through hole 312 is provided on the outer side of the square U-plate 31, and the screw 32 passes through the through hole 312 from the inside and is connected to the nut 33 on the outside. Through the combination of the screw 32 and the nut 33, a more stable and durable connection can be achieved. At the same time, by rotating the nut 33, the protruding length of the screw 32 can be fine-tuned, thereby adjusting the spacing or angle between the square U-plate 31 and other components.

[0030] In the preferred embodiment of the utility model, the front and rear widths of the rubber pad 5 are slightly larger than the width of the wheel 4, ensuring that the wheel 4 is in full contact with the rubber pad 5 during rolling, thereby preventing the wheel 4 from directly contacting the asphalt on the rutting plate specimen 2, reducing the wear and damage to the wheel 4, and extending the service life of the wheel 4; the rubber pad 5 is made of rubber material and has good friction performance, which increases the friction between the wheel 4 and the rubber pad 5, prevents the wheel 4 from sliding, and improves the accuracy and stability of the test; the length is just enough to contact the rutting plate specimen 2 when stationary, which not only ensures full contact between the wheel 4 and the rubber pad 5, but also avoids the interference of the excessively long rubber pad 5 on the test results. At the same time, this design also has strong adaptability and can adapt to wheels 4 and rutting plate specimens 2 of different sizes and shapes; the rubber pad 5 is engraved with 0.5-2 cm squares on the side facing the rutting plate specimen 2, and these squares can be used to observe and record the pressure distribution and deformation generated when the wheel 4 rolls on the rutting plate specimen 2. By comparing the asphalt adhesion conditions in different squares, the effect of the asphalt adhesion on the wheel 4 can be analyzed; the rubber pad 5 is a white rubber pad, which is easy to identify and distinguish. During the test, it can serve as an obvious mark to help testers quickly determine the adhesion condition of the asphalt on the rubber pad 5 and improve the test efficiency.

[0031] In the present solution, the wheel 4 is controlled by a driving mechanism 6 located above the rutting test bench 1, which can accurately simulate the movement state of the wheel 4 on the actual road, and is helpful to better test the asphalt adhesion performance test of the wheel 4 on the rutting plate specimen 2. At the same time, the driving mechanism 6 is located above the rutting test bench 1, which is convenient for installation and adjustment. The position, angle and height of the wheel 4 can be quickly adjusted according to different test requirements to adapt to rutting plate specimens 2 of different sizes and shapes; a groove is provided on the upper part of the rutting plate specimen 2 for holding the emulsified asphalt used for the test, and the groove can also fix the asphalt on all sides to avoid the decomposition of the asphalt due to the pressure in the forward direction of the wheel 4 during the test, which affects the test results.

[0032] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for testing the wheel adhesion performance of emulsified asphalt, characterized in that: include: A wheel rutting test bench (1) having a hollow interior; A rutting plate test piece (2) located at the bottom of the rutting test bench (1); A fixing assembly (3) fixed at both ends of the rutting test bench (1); A wheel (4) located between the two sets of the fixing components (3); The fixing assembly (3) comprises a square U-plate (31) with an opening facing downward, and screws (32) and nuts (33) for fixing the square U-plate (31). A rubber pad (5) is also provided between the fixing assembly (3) and the rutting test bench (1), and the rubber pad (5) extends between the rutting test bench (1) at the other end and the fixing assembly (3).

2. The emulsified asphalt wheel adhesion performance testing device according to claim 1, characterized in that: Circular fixing buckles (311) are evenly arranged on the top of the square U-plate (31).

3. The emulsified asphalt wheel adhesion performance testing device according to claim 1, characterized in that: A through hole (312) is provided on the outer side of the square U-plate (31), and the screw (32) passes through the through hole (312) from the inner side and is connected to the nut (33) on the outer side.

4. The emulsified asphalt wheel adhesion performance testing device according to claim 1, characterized in that: The front-to-rear width of the rubber pad (5) is slightly greater than the width of the wheel (4), and the length is such that it just contacts the rutting plate specimen (2) when stationary.

5. The emulsified asphalt wheel adhesion performance testing device according to claim 1, characterized in that: The rubber pad (5) has squares of 0.5-2 cm engraved on the side facing the rutting plate specimen (2).

6. The emulsified asphalt wheel adhesion performance testing device according to claim 1, characterized in that: The rubber pad (5) is a white rubber pad.

7. The emulsified asphalt wheel adhesion performance testing device according to claim 1, characterized in that: The wheel (4) is controlled by a driving mechanism (6) located above the rutting test bench (1).

8. The device for testing the wheel adhesion performance of emulsified asphalt according to claim 1, characterized in that: The upper part of the rutting plate test piece (2) is provided with a groove.

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