Equipment for detecting aging degree and structure condition of pavement

Abstract

The utility model discloses equipment for detecting pavement aging degree and structure condition, which comprises a pressure-bearing assembly for providing pressure, a detection box is mounted in the pressure-bearing assembly, a height-adjustable support table is arranged at the bottom in the detection box, a plurality of adjustable clamp plates are arranged on the peripheral side wall of the detection box at equal intervals, and a cylinder is jointly enclosed by the plurality of clamp plates. The bottom of the pavement sampling block is placed on the supporting table, and the cylinder corresponds to the pressure-bearing assembly; the pressure bearing assembly comprises a supporting frame fixed to the detection box, the supporting frame stretches across the detection box, a pressure oil cylinder is installed on the supporting frame, the tail end of a piston rod of the pressure oil cylinder penetrates through the supporting frame and extends into the supporting frame, and a pressure bearing table is installed at the tail end of the piston rod of the pressure oil cylinder. Through simple setting, a relatively real simulation scene can be provided, the measurement result is accurate, the method is suitable for testing sampling blocks of different sizes, the test process is simple, efficient and safe, no chippings are left in a test site, and the test is rapid and concise.

Description

Technical Field

[0001] This utility model relates to the field of highway inspection technology, and in particular to a device for detecting the degree of aging and structural condition of road surfaces. Background Technology

[0002] Under the long-term influence of environmental factors (temperature, humidity, ultraviolet radiation, traffic load), the performance parameters of road surfaces will degrade, affecting the road structure and driving safety. Therefore, road surfaces that have reached a certain service life should be inspected regularly to obtain relevant data in advance, address problems caused by road aging, and take timely measures.

[0003] Currently, road surface aging is mainly caused by the following factors: (1) the friction coefficient of asphalt road surface decreases due to factors such as ultraviolet rays and vehicle friction, increasing the risk of vehicle slippage and affecting driving safety; (2) road surface collapse is caused by roadbed or vehicle weight, resulting in a decrease in road surface smoothness and affecting driving comfort; (3) structural changes occur inside the road, resulting in cracks. The latter two are mainly due to changes in materials, which lead to a decrease in the bonding force between different layers of the road surface, further leading to a decrease in load-bearing capacity, a decrease in the strength and stiffness of the road surface materials, and an inability to effectively distribute traffic loads, or a decrease or cracks appear in the road surface, and finally delamination and loosening. Therefore, the detection of the aging degree and structural condition of the road surface is particularly important in road management. To this end, we propose a device for detecting the aging degree and structural condition of the road surface to solve the above problems. Utility Model Content

[0004] This application provides a device for detecting the aging degree and structural condition of road surfaces, solving the problem of strength and stiffness testing of highway pavement materials.

[0005] This application provides a device for detecting the degree of aging and structural condition of road surface, including a pressure-bearing component that provides pressure. A testing box is installed inside the pressure-bearing component. An adjustable support platform is provided at the bottom of the testing box. Multiple adjustable clamps are evenly spaced on the circumference side wall of the testing box. The multiple clamps together form a cylinder. A road surface sampling block is located inside the cylinder and its bottom is placed on the support platform. The cylinder corresponds to the pressure-bearing component.

[0006] Preferably, the pressure-bearing assembly includes a support frame fixed to the test box, the support frame spanning the test box, a pressure cylinder mounted on the support frame, the piston rod end of the pressure cylinder passing through the support frame and extending into the support frame, and a pressure-bearing platform mounted on the piston rod end of the pressure cylinder.

[0007] Preferably, a bearing sleeve is fixed to the bottom of the testing box, a support screw is provided inside the bearing sleeve, and the support platform is installed on the support screw.

[0008] Preferably, the side wall of the testing box is threaded with a plurality of adjusting support studs, and the clamping plate is mounted on the adjusting support studs.

[0009] Preferably, the number of adjusting support studs is 3-6.

[0010] Preferably, the adjusting support stud is adjusted using an Allen wrench.

[0011] Preferably, the clamping plate includes a support plate, the back of which is fixed with a connecting block connected to the adjusting support stud, and multiple movable plates are installed on the inner side of the support plate via a pressure sensor.

[0012] Preferably, rubber pads are also attached to multiple movable plates on the same side.

[0013] Preferably, the detection box is cylindrical.

[0014] As can be seen from the above technical solution, this application provides a device for detecting the degree of road aging and structural condition. In use, the height of the support platform is adjusted according to the height of the sampling block to meet the range of the pressure-bearing component. Then, the sampling block is placed on the support platform, and the clamp is adjusted to wrap the entire sampling block. If necessary, rubber pads can be attached to the adjusting clamp to improve the fit with the sampling block. Then, the sampling block is tested by the pressure-bearing component to test the pressure-bearing capacity and deformation resistance of the sampling block.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. By setting up the pressure-bearing components, the load on the sampling block can be tested, simulating the real load, resulting in more accurate measurement results;

[0017] 2. By setting up multiple clamping plates, a support structure can be formed around the sampling block, increasing the lateral load of the sampling block and improving the realism of the simulation;

[0018] 3. The testing chamber design improves the safety and cleanliness of the experimental process. No gravel will spill out during the experiment; only the testing chamber needs to be cleaned.

[0019] In summary, this application provides a relatively realistic simulation scenario through simple settings, resulting in more accurate measurement results. Furthermore, this application is applicable to testing sampling blocks of different sizes, and the testing process is simple, efficient, and safe, leaving no debris on the testing site. The testing process is fast and concise. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this application, the accompanying drawings used in the implementation examples will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of the internal structure of a device for detecting the degree of aging and structural condition of road surfaces according to the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of a device for detecting the degree of aging and structural condition of road surfaces according to this utility model.

[0023] Figure 3 This is a schematic diagram of the connection block installation structure of a device for detecting the aging degree and structural condition of road surfaces, as proposed in this utility model.

[0024] Figure 4 This is a schematic diagram of the clamping plate structure of a device for detecting the aging degree and structural condition of road surfaces proposed in this utility model.

[0025] In the diagram: 1. Detection box, 2. Adjusting support stud, 3. Bearing sleeve, 4. Support screw, 5. Support platform, 6. Clamping plate, 61. Support plate, 62. Connecting block, 63. Pressure sensor, 64. Movable plate, 7. Support frame, 8. Pressure cylinder, 9. Pressure platform. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0027] See Figure 1-4This application discloses a device for detecting the aging degree and structural condition of road surfaces. Specifically, it includes a pressure-bearing component to provide the pressure used during testing. A testing chamber 1 is installed inside the pressure-bearing component. The testing chamber 1 is used to hold the sampling block to be tested. Specifically, it can adopt a cylindrical design, which can collect the crushed stone after testing while ensuring the safety of personnel. Since the asphalt layer depth varies in different road surfaces, an adjustable-height support platform 5 is provided at the bottom of the testing chamber 1 to accommodate sampling blocks of different sizes, ensuring the pressure-bearing component... Within the measurement range, in order to more realistically simulate road conditions, a load needs to be applied to the side of the sampling block to ensure the authenticity of the pressure test. Therefore, multiple adjustable clamps 6 are evenly spaced on the side wall of the test box 1. The multiple clamps 6 together form a cylinder for placing the sampling block. The road sampling block is located inside the cylinder and its bottom is placed on the support platform 5. The sampling block is in close contact with the cylinder. If necessary, rubber gaskets can be attached to the movable plate 64 to improve the tightness of the fit and improve the accuracy of the measurement. The cylinder corresponds to the pressure-bearing component. After installation, the measurement is carried out through the pressure-bearing component.

[0028] In this utility model, the pressure-bearing component includes a support frame 7 fixed on the test box 1. The support frame 7 is U-shaped and spans across the test box 1. A pressure cylinder 8 is installed on the support frame 7. The pressure cylinder 8 is located at the center of the top of the support frame 7. The piston rod end of the pressure cylinder 8 passes through the support frame 7 and extends into the support frame 7. A pressure-bearing platform 9 is installed at the piston rod end of the pressure cylinder 8. The pressure-bearing platform 9 is detachably installed on the pressure cylinder 8. When disassembling, it can be fixed by bolts or threaded connection. The diameter of the pressure-bearing platform 9 is the same as the diameter of the sampling block. During the test, the entire pressure-bearing platform 9 acts on the sampling block.

[0029] In this utility model, a bearing screw sleeve 3 is fixed at the bottom of the detection box 1. The bearing screw sleeve 3 is provided with a trapezoidal thread and a support screw 4 is provided inside the bearing screw sleeve 3. The support platform 5 is installed on the support screw 4. The height of the support platform 5 can be adjusted by rotating the support screw 4 to accommodate sampling blocks of different sizes.

[0030] In this utility model, multiple adjusting support studs 2 are threaded onto the side wall of the detection box 1. The adjusting support studs 2 can rotate on the detection box 1. The clamping plate 6 is installed on the adjusting support studs 2. Specifically, the clamping plate 6 is movably connected to the adjusting support studs 2, that is, the end of the adjusting support stud 2 can rotate on the clamping plate 6. The position of the clamping plate 6 is adjusted by adjusting the adjusting support studs 2 so that multiple clamping plates 6 can be formed into a cylinder.

[0031] Furthermore, adjust the number of support studs 2 to 3-6, and distribute them evenly on the detection box 1 to clamp the sampling block;

[0032] Furthermore, during clamping, in order to increase the clamping force, the support stud 2 is adjusted using an Allen wrench, and can be adjusted using a torque wrench to ensure uniform clamping force and improve measurement accuracy.

[0033] In some embodiments, the clamping plate 6 includes a support plate 61, and a connecting block 62 connected to the adjusting support stud 2 is fixed on the back of the support plate 61. Specifically, the connecting block 62 can be directly fastened to the adjusting support stud 2, and clamped by adjusting the preload of the support stud 2 against the support plate 61. Multiple movable plates 64 are installed on the inner side of the support plate 61 through a pressure sensor 63. In this embodiment, the multiple movable plates 64 form a cylinder to enclose the sampling block. A pressure sensor 63 is set behind each movable plate 64. During the pressure test, the axial load pressure of the sampling block deforms and deforms radially. The radial dispersion ability of the sampling block can be measured. When the value shows a non-linear increase, it proves that the sampling block fracture test is over. The situation of the test block under axial force and radial dispersion force can be obtained, and a more accurate evaluation of the tested road surface can be made.

[0034] As can be seen from the above technical solution, during use, the height of the support platform 5 is adjusted according to the height of the sampling block to meet the range of the pressure-bearing component. Then, the sampling block is placed on the support platform 5, and the clamping plate 6 is adjusted to wrap the entire sampling block. If necessary, rubber pads can be attached to the adjusting clamping plate 6 to improve the fit with the sampling block. Then, the sampling block is tested through the pressure-bearing component to test the pressure-bearing capacity and deformation resistance of the sampling block.

[0035] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope of this application is indicated by the claims.

[0036] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The embodiments of this application described above do not constitute a limitation on the scope of protection of this application.

Claims

1. A device for detecting the degree of aging and structural condition of road surfaces, comprising a pressure-bearing component that provides pressure, characterized in that: The pressure-bearing component is equipped with a testing box (1), and the bottom of the testing box (1) is provided with an adjustable support platform (5). Multiple adjustable clamps (6) are provided at equal intervals on the side wall of the testing box (1). The multiple clamps (6) together form a cylinder. The road sampling block is located inside the cylinder and its bottom is placed on the support platform (5). The cylinder corresponds to the pressure-bearing component.

2. The device for detecting the degree of aging and structural condition of road surface according to claim 1, characterized in that, The pressure-bearing assembly includes a support frame (7) fixed on the test box (1), the support frame (7) spanning the test box (1), a pressure cylinder (8) mounted on the support frame (7), the piston rod end of the pressure cylinder (8) passing through the support frame (7) and extending into the support frame (7), and a pressure plate (9) mounted on the piston rod end of the pressure cylinder (8).

3. The device for detecting the degree of aging and structural condition of road surface according to claim 1, characterized in that, The bottom of the test box (1) is fixed with a bearing screw sleeve (3), and a support screw (4) is provided inside the bearing screw sleeve (3). The support platform (5) is installed on the support screw (4).

4. The device for detecting the degree of aging and structural condition of road surface according to claim 1, characterized in that, The side wall of the test box (1) is threaded with multiple adjusting support studs (2), and the clamping plate (6) is installed on the adjusting support studs (2).

5. The device for detecting the degree of aging and structural condition of road surface according to claim 4, characterized in that, The number of the adjusting support studs (2) is 3-6.

6. The device for detecting the degree of aging and structural condition of road surface according to claim 4, characterized in that, The adjusting support stud (2) is adjusted by an Allen wrench.

7. The device for detecting the degree of aging and structural condition of road surface according to claim 4, characterized in that, The clamp (6) includes a support plate (61), and a connecting block (62) connected to the adjusting support stud (2) is fixed on the back of the support plate (61). Multiple movable plates (64) are installed on the inner side of the support plate (61) through a pressure sensor (63).

8. The device for detecting the degree of aging and structural condition of road surface according to claim 7, characterized in that, Rubber pads are also attached to multiple movable plates (64) on the same side.

9. The device for detecting the degree of aging and structural condition of road surface according to claim 1, characterized in that, The detection box (1) is cylindrical.

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