Road and bridge engineering concrete pavement abrasion experiment device

Abstract

The utility model relates to the technical field of concrete detection, and provides a road and bridge engineering concrete pavement abrasion experiment device which comprises a supporting frame and a protection plate arranged outside the supporting frame, a square through hole is formed in the center of the top of the supporting frame, and axle supporting plates are arranged on the two sides of the square through hole respectively. The input end and the output end of the speed reducer are respectively connected with the output end of the motor and the axle of the simulation wheel, the bottom of the support frame is provided with a hydraulic cylinder, the output end of the hydraulic cylinder is provided with a support plate, the support plate is provided with a locking assembly for fixing a concrete pavement test block, and the hydraulic cylinder drives the concrete pavement test block to pass through a square through hole of the support frame for experiment. The top and the back of the support frame are respectively provided with a high-temperature simulation assembly and a rainy weather simulation assembly. According to the utility model, the simulated wheel can be attached to the concrete pavement test block for multiple times, and meanwhile, the abrasion condition of the concrete pavement in high-temperature and rainy weather can be simulated, so that the experiment precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete detection, in particular to a road and bridge engineering concrete pavement wear test device. Background Art

[0002] Road and bridge engineering originally refers to the survey, design, construction, maintenance, and management of roads and bridges. Road and bridge engineering can be divided into: roadbed, pavement, bridges, culverts, tunnels, drainage, protection, greening, traffic engineering, electromechanical engineering, etc. During the use of highway bridge pavement, friction loss will occur on its surface. In order to better manufacture more wear-resistant highway bridge pavement, it is necessary to test highway bridge pavement samples manufactured by different construction methods.

[0003] The existing concrete pavement wear test device for road and bridge engineering is a fixed structure. When the wear test is carried out on the pavement through the simulated wheel, when the pavement and the simulated wheel are worn, there is a certain gap between the simulated wheel and the concrete pavement, which will affect the experimental accuracy; in addition, the concrete pavement will actually be passed by vehicles of various weights, and different vehicles will wear the pavement differently. The existing experimental device cannot change the pressure of the simulated wheel on the pavement, which will also cause experimental errors; finally, the actual pavement will be affected by natural weather such as precipitation and high temperature under external natural conditions, which will also affect the wear test results. The existing experimental device does not have the ability to simulate external environmental factors, and the experimental results are inaccurate.

[0004] Therefore, in view of the above problems, a road and bridge engineering concrete pavement wear test device is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims at the deficiencies of the prior art and develops a road and bridge engineering concrete pavement wear test device. The utility model can fit the simulated wheel with the concrete pavement test block for multiple times and can simulate the concrete pavement wear conditions in high temperature and rainy weather, thereby improving the accuracy of the experiment.

[0006] The technical solution of the utility model to solve the technical problem is as follows: the utility model provides a concrete pavement wear test device for road and bridge engineering, including a support frame and a protective plate arranged outside the support frame, a square through hole is arranged at the top center of the support frame, an axle support plate is arranged on both sides of the square through hole, a motor and a reducer are arranged on the side of one axle support plate away from the other axle support plate, the input end and the output end of the reducer are respectively connected to the motor output end and the axle of the simulated wheel, a hydraulic cylinder is arranged at the bottom of the support frame, a support plate is arranged at the output end of the hydraulic cylinder, a locking assembly for fixing a concrete pavement test block is arranged on the support plate, the hydraulic cylinder drives the concrete pavement test block to pass through the square through hole of the support frame for the test, and a high temperature simulation assembly and a rainy weather simulation assembly are also arranged on the top and back of the support frame respectively.

[0007] As an optimization, the locking assembly includes a fixed frame and a locking slider. A "concave"-shaped fixed frame is set on the top of the support plate. A locking groove corresponding to the locking slider is opened on the support plate in the middle of the fixed frame. The position of the locking slider is adjusted by bolts in the locking groove, and the outer diameter of the fixed frame is adapted to the inner diameter of the square through hole of the support frame.

[0008] As an optimization, the high temperature simulation component includes an air duct and a heating fan. A top plate is set on the top of the axle support plate. The top plate is connected to the protective plate on all sides. The air duct is set at the position between the two axle support plates corresponding to the top plate, and a heating fan is set on the top of the air duct.

[0009] As an optimization, a guide hole is arranged on the top of the support frame, a guide column is vertically arranged on the top of the support plate, and the guide column slides through the guide hole.

[0010] As an optimization, the rainy weather simulation component includes a water tank and a nozzle. The water tank is arranged on the outside of the protective plate on the back of the supporting frame, and a nozzle with an opening slanting downward is arranged on the inside of the protective plate. A pressure pump is arranged in the water tank, and the nozzle is connected to the pressure pump in the water tank through a pipe.

[0011] As an optimization, an observation cover is hingedly set on the top of the protective plate on the front of the support frame, a feed door is set on the protective plate below the observation cover, and a rotating door bolt for fixing the feed door and the observation cover is rotatably set on the protective plate between the feed door and the observation cover.

[0012] As an optimization, a connecting ring is arranged at the bottom center of the supporting plate, and the connecting ring is fixedly connected to the output end of the hydraulic cylinder.

[0013] The effects provided in the utility model content are only the effects of the embodiments, not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0014] 1. By setting a hydraulic cylinder at the bottom of the support plate, after the experiment is carried out for a period of time, the simulated wheel and the concrete road test block are worn. After the hydraulic cylinder is pressurized, the output end of the hydraulic cylinder pushes the concrete road test block fixed on the support plate upward, so that the simulated wheel and the concrete road test block fit together again, thereby improving the accuracy of the experiment. By pressurizing the hydraulic cylinder again after the simulated wheel fits the concrete road surface, the pressure between the concrete test block and the simulated wheel is increased to simulate the weight of different vehicles. Experiments under various pressure conditions make the experimental results more accurate.

[0015] 2. A heating fan is arranged on the top of the support frame, and the heating fan blows hot air to the concrete pavement test block through the air duct to increase the temperature of the simulated environment, simulate the influence of high temperature on the wear of the concrete pavement, and improve the accuracy of the experiment. A water tank is arranged on the back of the support frame, a pressure pump is arranged inside the water tank, and a nozzle with an opening inclined downward is arranged on the inner side of the protective plate. The water in the water tank is sprayed onto the surface of the concrete pavement test block by the pressure pump, so as to simulate the influence of rainy weather on the wear of the concrete pavement, so as to make the wear experiment more scientific and the experimental results more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

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

[0018] Figure 2 It is a top view of the utility model;

[0019] Figure 3 For this utility model Figure 2 Middle AA section view;

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

[0021] Figure 5 This is a schematic diagram of the structure of the support plate of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the connecting ring of the utility model.

[0023] In the figure, 1. protective plate; 2. top plate; 3. air duct; 4. heating fan; 5. feed door; 6. water tank; 7. observation cover; 8. hydraulic cylinder; 9. support plate; 10. concrete pavement test block; 11. simulated wheel; 12. rotating bolt; 13. motor; 14. reducer; 15. support frame; 16. guide column; 17. nozzle; 18. axle support plate; 19. guide hole; 20. fixing frame; 21. locking slide groove; 22. locking slider; 23. connecting ring. DETAILED DESCRIPTION

[0024] In order to clearly illustrate the technical features of this solution, the utility model is described in detail below through specific implementation methods and in combination with the accompanying drawings. The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. In addition, the utility model can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. It should be noted that the components illustrated in the accompanying drawings are not necessarily drawn to scale. The utility model omits the description of known components and processing technologies and processes to avoid unnecessary limitations on the utility model. The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] like Figures 1 to 6 As shown, a concrete pavement wear test device for road and bridge engineering includes a support frame 15 and a protective plate 1 arranged outside the support frame 15, a square through hole is arranged at the top center of the support frame 15, an axle support plate 18 is arranged on both sides of the square through hole, a motor 13 and a reducer 14 are arranged on the side of one axle support plate 18 away from the other axle support plate 18, the input end and the output end of the reducer 14 are respectively connected to the output end of the motor 13 and the axle of the simulated wheel 11, a hydraulic cylinder 8 is arranged at the bottom of the support frame 15, a support plate 9 is arranged at the output end of the hydraulic cylinder 8, a locking assembly for fixing a concrete pavement test block 10 is arranged on the support plate 9, the hydraulic cylinder 8 drives the concrete pavement test block 10 to pass through the square through hole of the support frame 15 for testing, and a high temperature simulation assembly and a rainy weather simulation assembly are also arranged on the top and back of the support frame 15 respectively.

[0026] The support plate 9 is pushed up by the hydraulic cylinder 8 so that the simulated wheel 11 is always in contact with the concrete road test block 10, thereby increasing the accuracy of the experiment. The wear of vehicles of different weights on the road surface is simulated by pressurizing the hydraulic cylinder 8, and the experimental results are more scientific. The outer side of the support frame 15 is fixedly connected with protective plates 1 arranged on four sides by bolts. The protective plates 1 can ensure that the dust generated by wear during the experiment is enclosed inside the experimental device, thereby reducing environmental pollution.

[0027] In this embodiment, the locking assembly includes a fixed frame 20 and a locking slider 22. A "concave"-shaped fixed frame 20 is set on the top of the support plate 9. A locking groove 21 adapted to the locking slider 22 is opened on the support plate 9 in the middle of the fixed frame 20. The position of the locking slider 22 is adjusted by bolts in the locking groove 21, and the outer diameter of the fixed frame 20 is adapted to the inner diameter of the square through hole of the support frame 15.

[0028] In this embodiment, the high temperature simulation component includes an air duct 3 and a heating fan 4. A top plate 2 is arranged on the top of the axle support plate 18. The top plate 2 is connected to the protective plate 1 on all sides. An air duct 3 is arranged on the top plate 2 corresponding to the position between the two axle support plates 18. A heating fan 4 is arranged on the top of the air duct 3. The heating fan 4 blows hot air to the concrete pavement test block 10 to increase the temperature of the simulated environment, simulate the influence of high temperature on the wear of the concrete pavement, and improve the accuracy of the experiment.

[0029] In this embodiment, a guide hole 19 is provided on the top of the support frame 15, a guide column 16 is vertically provided on the top of the support plate 9, and the guide column 16 slides through the guide hole 19. The guide column 16 and the guide hole 19 are slidably connected, which increases the stability of the sliding of the support plate 9 and reduces the error of the experimental results caused by the shaking of the support plate 9.

[0030] In this embodiment, the rainy weather simulation component includes a water tank 6 and a nozzle 17. The water tank 6 is arranged outside the protective plate 1 on the back of the support frame 15, and the nozzle 17 with an opening obliquely downward is arranged inside the protective plate 1. A pressure pump is arranged in the water tank 6, and the nozzle 17 is connected to the pressure pump in the water tank 6 through a pipeline. The nozzle 17 sprays water to the concrete pavement test block 10 to simulate the effect of rain on the wear of the concrete pavement, thereby improving the accuracy of the experiment.

[0031] In this embodiment, the top of the protective plate 1 on the front of the support frame 15 is hingedly provided with an observation cover plate 7, and the protective plate 1 below the observation cover plate 7 is provided with a feed door 5, and a rotary bolt 12 for fixing the feed door 5 and the observation cover plate 7 is rotatably provided on the protective plate 1 between the feed door 5 and the observation cover plate 7. The rotary bolt 12 is rotatably connected to the protective plate 1, and rotating the rotary bolt 12 can close and lock the observation cover plate 7 and the feed door 5 at the same time, which is simple to operate.

[0032] In this embodiment, in order to increase the connection strength between the support plate 9 and the hydraulic cylinder 8 , a connection ring 23 is provided at the bottom center of the support plate 9 , and the connection ring 23 is fixedly connected to the output end of the hydraulic cylinder 8 .

[0033] Working principle: open the feed door 5, place the concrete pavement test block 10 at the center of the support plate 9, so that the concrete pavement test block 10 fits against the inner side of the fixed frame 20, use a wrench to turn the bolt to drive the locking slider 22 to fit against the concrete pavement test block 10, at this time, the locking slider 22 is slidably connected with the locking slide groove 21, and the concrete pavement test block 10 is fixed on the support plate 9, and the hydraulic cylinder 8 at the bottom of the support plate 9 is started. The output end of the hydraulic cylinder 8 pushes the support plate 9 upward to make the concrete test block fit against the simulated wheel 11, and then close the feed door 5 and the observation cover 7, and rotate the rotary bolt 12 to change the rotary bolt 12 from a horizontal state to a vertical state, thereby locking the observation cover 7 and the feed door 5 at the same time, and starting the motor 13. The motor 13 drives the simulated wheel 11 to rotate via the reducer 14, and the simulated wheel 11 and The concrete pavement test block 10 is rubbed, and the wear of the concrete pavement test block 10 is detected after running for a period of time. The hydraulic cylinder 8 is adjusted again to make the concrete test block fit with the simulated wheel 11 again. At the same time, the pressure of the hydraulic cylinder 8 can be increased to simulate the weight change of the vehicle and continue the wear test. During the experiment, the water pump in the water tank 6 can be turned on to spray water on the surface of the concrete pavement test block 10 to simulate the influence of rainy weather on the wear. The heating fan 4 on the top can be started to blow hot air to the concrete pavement test block 10 to increase the temperature of the simulated environment and simulate the influence of high temperature on the wear of the concrete pavement, so as to make the experimental results more accurate. In addition, after the experiment, the heating fan 4 can be started separately to dry the moisture on the surface of the concrete pavement test block 10 after the simulated wheel 11 stops rotating, so as to facilitate cleaning.

[0034] Although the specific implementation methods of the utility model are described above in conjunction with the accompanying drawings, this does not limit the scope of protection of the utility model. On the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A road and bridge engineering concrete pavement wear test device, comprising a support frame (15) and a protective plate (1) arranged outside the support frame (15), wherein: A square through hole is arranged at the center of the top of the support frame (15), and an axle support plate (18) is arranged on both sides of the square through hole. A motor (13) and a reducer (14) are arranged on one side of the axle support plate (18) away from the other axle support plate (18), and the input end and the output end of the reducer (14) are respectively connected to the output end of the motor (13) and the axle of the simulated wheel (11). A hydraulic cylinder (8) is arranged at the bottom of the support frame (15), and a support plate (9) is arranged at the output end of the hydraulic cylinder (8). A locking assembly for fixing a concrete pavement test block (10) is arranged on the support plate (9). The hydraulic cylinder (8) drives the concrete pavement test block (10) to pass through the square through hole of the support frame (15) for testing. A high temperature simulation assembly and a rainy weather simulation assembly are also arranged on the top and back of the support frame (15).

2. The road and bridge engineering concrete pavement wear test device according to claim 1 is characterized in that: The locking assembly comprises a fixed frame (20) and a locking slider (22); a "concave"-shaped fixed frame (20) is arranged on the top of the support plate (9); a locking slide groove (21) adapted to the locking slider (22) is provided on the support plate (9) in the middle of the fixed frame (20); a bolt is used to adjust the position of the locking slider (22) in the locking slide groove (21); and the outer diameter of the fixed frame (20) is adapted to the inner diameter of the square through hole of the support frame (15).

3. The road and bridge engineering concrete pavement wear test device according to claim 2 is characterized by: The high temperature simulation component comprises an air duct (3) and a heating fan (4); a top plate (2) is arranged on the top of the axle support plate (18); the top plate (2) is connected to the protective plate (1) on all sides; the air duct (3) is arranged on the top plate (2) at a position corresponding to the position between the two axle support plates (18); and the heating fan (4) is arranged on the top of the air duct (3).

4. The road and bridge engineering concrete pavement wear test device according to claim 1 or 2, characterized in that: A guide hole (19) is arranged at the top of the support frame (15), a guide column (16) is vertically arranged at the top of the support plate (9), and the guide column (16) slides through the guide hole (19).

5. The road and bridge engineering concrete pavement wear test device according to claim 1 or 2, characterized in that: The rainy weather simulation component comprises a water tank (6) and a nozzle (17); the water tank (6) is arranged outside the protective plate (1) at the back of the support frame (15); the nozzle (17) with an opening obliquely downward is arranged inside the protective plate (1); a pressure pump is arranged inside the water tank (6); and the nozzle (17) is connected to the pressure pump inside the water tank (6) via a pipeline.

6. The road and bridge engineering concrete pavement wear test device according to claim 1 or 2, characterized in that: An observation cover plate (7) is hingedly arranged on the top of the protection plate (1) on the front of the support frame (15), a feed door (5) is arranged on the protection plate (1) below the observation cover plate (7), and a rotating door bolt (12) for fixing the feed door (5) and the observation cover plate (7) is rotatably arranged on the protection plate (1) between the feed door (5) and the observation cover plate (7).

7. The road and bridge engineering concrete pavement wear test device according to claim 1 or 2, characterized in that: A connecting ring (23) is provided at the bottom center of the support plate (9), and the connecting ring (23) is fixedly connected to the output end of the hydraulic cylinder (8).

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