Simulation test device for rutting resistance of asphalt pavement

Abstract

The utility model provides an asphalt pavement anti-rutting performance simulation test device, which relates to the technical field of road engineering and comprises a supporting base body, a mechanical loading mechanism, a depth measuring mechanism and a sensing and control system, the supporting base body comprises a base plate, a rotating supporting plate is arranged at the bottom of the base plate, and a mechanical loading mechanism is installed on the rotating supporting plate; in the operation process, the pressure head of the mechanical loading mechanism can apply load to the road surface, so that a track with a certain depth is formed; meanwhile, the depth measuring mechanism and the lever dial indicator work cooperatively to measure the depth of the track; the numerical value of the applied load and the data of the rut depth are recorded in the data recorder, and the corresponding comparison relation can be obtained by comparing the correlation between the numerical value of the applied load and the data of the rut depth at the same moment; the problem that in an actual road test, an existing device for testing the rutting resistance of the road surface cannot reflect the correlation between the applied load and the road deformation is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to road engineering technical field, more specifically, especially, it is related to asphalt pavement anti -ruts performance simulation test device. BACKGROUND

[0002] When the rut appears on the road, the tire of the driving vehicle is easy to sink into the groove, so that the vehicle steering becomes difficult, especially in the case of road waterlogging in rainy days, the risk of skidding of the passing vehicle will greatly increase, in view of this, it is particularly necessary to carry out anti -ruts performance test on the road.

[0003] In the actual road test scene, the existing pavement anti -ruts performance test device has obvious deficiency, these devices often can only detect single parameter in isolation in the operation process, but it is difficult to accurately and comprehensively reflect the internal correlation between the load and the deformation degree of the road of the vehicle, and the evolution trend of such deformation under different environmental conditions, and these key information is crucial for in -depth understanding of the anti -ruts performance of the road. UTILITY MODEL CONTENTS

[0004] In order to solve the above technical problems, the utility model provides a kind of asphalt pavement anti -ruts performance simulation test device to solve the problem that the existing pavement anti -ruts performance test device cannot reflect the correlation between load and road deformation in actual road test.

[0005] The utility model provides a kind of asphalt pavement anti -ruts performance simulation test device, by following specific technical means is achieved:

[0006] A kind of asphalt pavement anti -ruts performance simulation test device, including supporting matrix, mechanical loading mechanism, depth measuring mechanism and sensing and control system;The supporting matrix includes base plate, is equipped with rotating support plate on base plate bottom, and mechanical loading mechanism is installed on rotating support plate;Base plate bottom is also equipped with fixed support plate, and depth measuring mechanism is installed on fixed support plate;Vehicle frame is fixedly connected on the base plate, and axle is inserted through on vehicle frame, and wheel is fixedly connected at both ends of axle, and limiting clamping plate is equipped on axle;The hook buckle is fixedly connected on the front end of base plate by traction plate;First rotating support is equipped on the base plate;The mechanical loading mechanism includes pressure head and force control hydraulic cylinder, and second shaft rod is fixedly connected on both sides of force control hydraulic cylinder, and second shaft rod is inserted through in first rotating support;The depth measuring mechanism includes fixed square tube, and fixed square tube bottom is fixedly connected with fulcrum plate, and swing frame is rotatably connected on fulcrum plate, and ground roller is rotatably connected on one end of swing frame;The sensing and control system includes data logger and remote controller, and data logger is installed and fixed on fixed support plate, and remote controller is installed and fixed on base plate, and remote controller is connected with force control hydraulic cylinder.

[0007] Further, the mechanical loading mechanism further comprises a coupling plate, rotation shaft holes are formed on both sides of the coupling plate, the coupling plate is rotationally connected with the rotation support plate through the rotation shaft hole on one side, and a rotation connecting piece is connected with the rotation shaft hole on the other side, and the rotation connecting piece is fixedly connected to the end of the thrust rod of the force control hydraulic cylinder.

[0008] Further, the coupling plate is provided with a second rotation support, and the pressure head is provided with a first rotation shaft rod on both sides, and the first rotation shaft rod is rotationally connected in the second rotation support.

[0009] Further, the swing frame is rotationally connected with a lower contact plate through a rotating sleeve on the side away from the ground roller, the lower contact plate is pressed by an upper contact plate, the upper contact plate is fixedly connected with a movable rod above, the bottom of the fixed square cylinder is fixedly connected with a limiting frame, the movable rod is slidably connected with the limiting frame and the fixed square cylinder by penetratingly inserting the limiting frame, and the upper end of the movable rod is provided with a pressure plate.

[0010] Further, the fixed square cylinder is fixedly installed with a lever micrometer through a fixed support, the measuring rod of the lever micrometer is in contact with the pressure plate, and the lever micrometer is connected with a data recorder.

[0011] Further, the swing frame and the fixed square cylinder are connected with a first spring, the first spring is located on the side of the swing frame close to the lower contact plate, and the first spring is in a stretched state.

[0012] Further, the movable rod is sleeved with a second spring, the two ends of the second spring are in contact with the upper contact plate and the limiting frame respectively, and the second spring is in a compressed state.

[0013] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0014] The utility model is equipped with a supporting base, can hook the hook buckle by means of a tractor, and can implement traction operation to the testing device on the road, to ensure that the testing device moves at a constant speed;In this operation process, the pressure head of the mechanical loading mechanism will apply load to the road surface, and then form a rut with a certain depth;At the same time, the depth measuring mechanism and the lever micrometer work cooperatively to measure the depth of the rut;The value of the applied load and the data of the rut depth are all recorded into the data recorder, and by comparing the correlation between the two at the same time, the corresponding comparison relationship can be obtained. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure schematic diagram of the utility model.

[0016] Figure 2 It is the partial structure schematic diagram of the utility model.

[0017] Figure 3It is the structural schematic diagram of the mechanical loading mechanism.

[0018] Figure 4 It is the structural schematic diagram of the mechanical loading mechanism. Figure 3 The explosion view of the structure shown.

[0019] Figure 5 It is the structural schematic diagram of the depth measuring mechanism.

[0020] In the figure, the corresponding relationship of component name and figure number is:

[0021] 10, supporting base body;

[0022] 11, base plate; 12, frame; 13, axle; 14, wheel; 15, limiting clamping plate; 16, traction plate; 17, hook; 18, rotating support plate; 19, fixed support plate; 110, first rotating support;

[0023] 20, mechanical loading mechanism;

[0024] 21, connecting plate; 22, rotating shaft hole; 23, second rotating support; 24, pressure head; 25, first rotating shaft rod; 26, rotating connecting piece; 27, force control hydraulic cylinder; 28, second rotating shaft rod;

[0025] 30, depth measuring mechanism;

[0026] 31, fixed square cylinder; 32, fulcrum plate; 33, swing frame; 34, ground roller; 35, lower contact plate; 36, upper contact plate; 37, movable rod; 38, limiting frame; 39, pressure plate; 310, fixed support; 311, first spring; 312, second spring;

[0027] 40, sensing and control system;

[0028] 41, remote controller; 42, lever dial gauge; 43, data recorder. DETAILED DESCRIPTION

[0029] The embodiment of the present application will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0030] Example:

[0031] As shown in the accompanying drawings: Figure 1 to the accompanying drawings: Figure 5 As shown in the accompanying drawings:

[0032] The utility model provides a kind of asphalt pavement anti-rutting performance simulation testing device, including supporting matrix 10, mechanical loading mechanism 20, depth measuring mechanism 30 and sensing and control system 40;Supporting matrix 10 includes base plate 11, and base plate 11 bottom is equipped with rotating support plate 18, and rotating support plate 18 is installed with mechanical loading mechanism 20;Base plate 11 bottom is also equipped with fixed support plate 19, and fixed support plate 19 is installed with depth measuring mechanism 30;Base plate 11 is fixedly connected with car frame 12, and car frame 12 is inserted with axle 13 in penetration, and axle 13 both ends are fixedly connected with wheel 14, and axle 13 is equipped with limit clamping plate 15, and limit clamping plate 15 is tightly attached on the side wall of car frame 12;Base plate 11 front end is fixedly connected with hook 17 by traction plate 16;Base plate 11 is equipped with first rotating support 110;Mechanical loading mechanism 20 includes pressure head 24 and force control hydraulic cylinder 27, and force control hydraulic cylinder 27 both sides are fixedly connected with second rotating shaft rod 28, and second rotating shaft rod 28 is inserted in first rotating support 110;Depth measuring mechanism 30 includes fixed square cylinder 31, and fixed square cylinder 31 bottom is fixedly connected with fulcrum plate 32, and fulcrum plate 32 is rotatably connected with swing frame 33, and swing frame 33 one end is rotatably connected with ground roller 34;Sensing and control system 40 includes data logger 43 and remote controller 41, and data logger 43 is installed and fixed on fixed support plate 19, and remote controller 41 is installed and fixed on base plate 11, and remote controller 41 is connected with force control hydraulic cylinder 27.

[0033] As shown in the figure, Figure 3 Mechanical loading mechanism 20 also includes coupling plate 21, and rotating shaft hole 22 is formed in the both sides of coupling plate 21, and coupling plate 21 side forms rotating connection with rotating support plate 18 through rotating shaft hole 22, and the other side is connected with rotating connecting piece 26 through rotating shaft hole 22, and rotating connecting piece 26 is fixedly connected to the end of force control hydraulic cylinder 27 push rod;Coupling plate 21 is equipped with second rotating support 23;Pressure head 24 both sides are equipped with first rotating shaft rod 25, and first rotating shaft rod 25 forms rotating connection in second rotating support 23;Remote controller 41 controls force control hydraulic cylinder 27 to exert certain load on rotating connecting piece 26 through push rod, and rotating connecting piece 26 presses coupling plate 21, and load is exerted on pressure head 24, and pressure head 24 adopts the structure of imitating wheel, and pressure head 24 exerts certain load on road surface while rolling, and rut of certain depth is pressed out.

[0034] As shown in the figure, Figure 5As shown, the swing frame 33 is rotatably connected with the lower contact plate 35 through a rotating sleeve on the side far away from the ground roller 34, the lower contact plate 35 is pressed by the upper contact plate 36, and the upper contact plate 36 is fixedly connected with the movable rod 37 above; the bottom of the fixed square cylinder 31 is fixedly connected with the limiting frame 38, the movable rod 37 is slidably connected by penetratingly inserting the limiting frame 38 and the fixed square cylinder 31, and the upper end of the movable rod 37 is provided with the pressure plate 39; the lever micrometer 42 is fixedly installed in the fixed square cylinder 31 through the fixed support 310, the measuring rod of the lever micrometer 42 is in contact with the pressure plate 39, the lever micrometer 42 is connected with the data recorder 43; the fulcrum plate 32 is rotatably connected at the middle part of the swing frame 33, after the ground roller 34 is sunk into the rut, the end of the swing frame 33 connected with the ground roller 34 is lowered, the other end is raised, the upper contact plate 36 and the movable rod 37 are pushed upward through the lower contact plate 35, the pressure plate 39 is moved upward by a certain distance, and the displacement is detected through the lever micrometer 42, the distance is substantially equal to the rut depth, and the data recorder 43 is used for recording.

[0035] As shown in the drawings, the swing frame 33 is rotatably connected with the lower contact plate 35 through a rotating sleeve on the side far away from the ground roller 34, the lower contact plate 35 is pressed by the upper contact plate 36, and the upper contact plate 36 is fixedly connected with the movable rod 37 above; the bottom of the fixed square cylinder 31 is fixedly connected with the limiting frame 38, the movable rod 37 is slidably connected by penetratingly inserting the limiting frame 38 and the fixed square cylinder 31, and the upper end of the movable rod 37 is provided with the pressure plate 39; the lever micrometer 42 is fixedly installed in the fixed square cylinder 31 through the fixed support 310, the measuring rod of the lever micrometer 42 is in contact with the pressure plate 39, the lever micrometer 42 is connected with the data recorder 43; the fulcrum plate 32 is rotatably connected at the middle part of the swing frame 33, after the ground roller 34 is sunk into the rut, the end of the swing frame 33 connected with the ground roller 34 is lowered, the other end is raised, the upper contact plate 36 and the movable rod 37 are pushed upward through the lower contact plate 35, the pressure plate 39 is moved upward by a certain distance, and the displacement is detected through the lever micrometer 42, the distance is substantially equal to the rut depth, and the data recorder 43 is used for recording. Figure 5 As shown in the drawings, the swing frame 33 is rotatably connected with the lower contact plate 35 through a rotating sleeve on the side far away from the ground roller 34, the lower contact plate 35 is pressed by the upper contact plate 36, and the upper contact plate 36 is fixedly connected with the movable rod 37 above; the bottom of the fixed square cylinder 31 is fixedly connected with the limiting frame 38, the movable rod 37 is slidably connected by penetratingly inserting the limiting frame 38 and the fixed square cylinder 31, and the upper end of the movable rod 37 is provided with the pressure plate 39; the lever micrometer 42 is fixedly installed in the fixed square cylinder 31 through the fixed support 310, the measuring rod of the lever micrometer 42 is in contact with the pressure plate 39, the lever micrometer 42 is connected with the data recorder 43; the fulcrum plate 32 is rotatably connected at the middle part of the swing frame 33, after the ground roller 34 is sunk into the rut, the end of the swing frame 33 connected with the ground roller 34 is lowered, the other end is raised, the upper contact plate 36 and the movable rod 37 are pushed upward through the lower contact plate 35, the pressure plate 39 is moved upward by a certain distance, and the displacement is detected through the lever micrometer 42, the distance is substantially equal to the rut depth, and the data recorder 43 is used for recording.

[0036] As shown in the drawings, the swing frame 33 is rotatably connected with the lower contact plate 35 through a rotating sleeve on the side far away from the ground roller 34, the lower contact plate 35 is pressed by the upper contact plate 36, and the upper contact plate 36 is fixedly connected with the movable rod 37 above; the bottom of the fixed square cylinder 31 is fixedly connected with the limiting frame 38, the movable rod 37 is slidably connected by penetratingly inserting the limiting frame 38 and the fixed square cylinder 31, and the upper end of the movable rod 37 is provided with the pressure plate 39; the lever micrometer 42 is fixedly installed in the fixed square cylinder 31 through the fixed support 310, the measuring rod of the lever micrometer 42 is in contact with the pressure plate 39, the lever micrometer 42 is connected with the data recorder 43; the fulcrum plate 32 is rotatably connected at the middle part of the swing frame 33, after the ground roller 34 is sunk into the rut, the end of the swing frame 33 connected with the ground roller 34 is lowered, the other end is raised, the upper contact plate 36 and the movable rod 37 are pushed upward through the lower contact plate 35, the pressure plate 39 is moved upward by a certain distance, and the displacement is detected through the lever micrometer 42, the distance is substantially equal to the rut depth, and the data recorder 43 is used for recording. Figure 5

[0037] The specific use mode and effect of the embodiment are as follows:

[0038] ​In this invention, a counterweight is fixed on the base plate 11, and a traction vehicle hooks the hook 17 to pull the testing device, keeping it moving forward at a constant speed. The remote controller 41 controls the force-controlled hydraulic cylinder 27 to apply a dynamic load to the rotating connecting member 26 through the thrust rod. The rotating connecting member 26 presses against the connecting plate 21, applying a load to the pressure head 24. The pressure head 24 adopts a wheel-like structure, applying a certain load to the road surface while rolling. The load data is recorded in real time in the data recorder 43. The pressure head 24 presses out a rut of a certain depth. The depth of the rut is relatively small compared to the size of the pressure head 24 and can be ignored. It needs to be detected by the depth measuring mechanism 30. The specific measurement steps are as follows: In the first spring... Under the pulling action of 311, one end of the swing frame 33 near the lower contact plate 35 tends to tilt upwards, while the other end tends to rotate downwards, forcing the bottom of the ground roller 34 to fit into the deepest part of the rut. After the ground roller 34 is stuck in the rut, one end of the swing frame 33 connected to the ground roller 34 droops down, while the other end tilts up. The lower contact plate 35 pushes the upper contact plate 36 and the movable rod 37 upwards, causing the pressure plate 39 to move upwards a certain distance. The displacement is detected by the lever dial indicator 42. This distance is approximately equal to the rut depth and is recorded by the data recorder 43. The load of the pressure head 24 on the road surface and the rut depth obtained by the data recorder 43 are compared in real time to obtain the comparison relationship between the two.

[0039] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

Claims

1. A device for simulating the rutting resistance of an asphalt pavement, characterized in that: The utility model provides a kind of mechanical loading mechanism, including support matrix (10), mechanical loading mechanism (20), depth measuring mechanism (30) and sensing and control system (40);The support matrix (10) includes base plate (11), and the bottom of base plate (11) is equipped with rotating support plate (18), and rotating support plate (18) is equipped with mechanical loading mechanism (20) on it;The bottom of base plate (11) is further equipped with fixed support plate (19), and fixed support plate (19) is equipped with depth measuring mechanism (30) on it;The base plate (11) is fixedly connected with vehicle frame (12), and the vehicle frame (12) is inserted with axle (13) through, and the both ends of axle (13) are fixedly connected with wheel (14), and axle (13) is equipped with limit clamping plate (15), and limit clamping plate (15) is tightly attached on the side wall of vehicle frame (12);The front end of base plate (11) is fixedly connected with hook buckle (17) by traction plate (16);The base plate (11) is equipped with first rotating support (110);The mechanical loading mechanism (20) includes pressure head (24) and force control hydraulic cylinder (27), and the both sides of force control hydraulic cylinder (27) are fixedly connected with second rotating shaft rod (28), and second rotating shaft rod (28) is inserted in first rotating support (110);The depth measuring mechanism (30) includes fixed square cylinder (31), and the bottom of fixed square cylinder (31) is fixedly connected with fulcrum plate (32), and fulcrum plate (32) is rotatably connected with swing frame (33), and swing frame (33) one end is rotatably connected with ground roller (34);The sensing and control system (40) includes data logger (43) and remote controller (41), and data logger (43) is fixedly installed on fixed support plate (19), and remote controller (41) is fixedly installed on base plate (11), and remote controller (41) is connected with force control hydraulic cylinder (27).

2. The rutting resistance performance simulation test device for asphalt pavement of claim 1, characterized in that: The mechanical loading mechanism (20) further includes coupling plate (21), and rotating shaft hole (22) is formed in the both sides of coupling plate (21), and coupling plate (21) is rotatably connected with rotating support plate (18) through rotating shaft hole (22) on one side, and rotatably connected with rotating coupling piece (26) through rotating shaft hole (22) on the other side, and rotating coupling piece (26) is fixedly connected with the end of force control hydraulic cylinder (27) push rod.

3. The rutting resistance performance simulation test device for asphalt pavement of claim 2, characterized in that: Second rotating support (23) is formed on the coupling plate (21), and first rotating shaft rod (25) is formed on the both sides of pressure head (24) and rotatably connected with second rotating support (23).

4. The anti-rutting performance simulation testing device for asphalt pavement of claim 1, wherein: Swing frame (33) is rotatably connected with lower contact plate (35) through rotating sleeve on the side away from ground roller (34), and upper contact plate (36) is pressed on lower contact plate (35), and movable rod (37) is fixedly connected above upper contact plate (36);Limiting frame (38) is fixedly connected with the bottom of fixed square cylinder (31), and movable rod (37) is slidably connected with limiting frame (38) and fixed square cylinder (31) through insertion, and pressure plate (39) is arranged on the upper end of movable rod (37).

5. The asphalt pavement rutting resistance simulation testing device as described in claim 1, characterized in that: The lever micrometer (42) is installed and fixed in the fixed square cylinder (31) through a fixed support (310), a measuring rod of the lever micrometer (42) is in contact with the pressure plate (39), and the lever micrometer (42) is connected with a data recorder (43).

6. The rutting resistance performance simulation test device for asphalt pavement of claim 1, wherein: A first spring (311) is connected between the swing frame (33) and the fixed square cylinder (31), the first spring (311) is located on one side of the swing frame (33) close to the lower contact plate (35), and the first spring (311) is in a stretched state.

7. The rutting resistance performance simulation test device for asphalt pavement of claim 4, characterized in that: A second spring (312) is sleeved on the movable rod (37), two ends of the second spring (312) are in contact with the upper contact plate (36) and the limiting frame (38) respectively, and the second spring (312) is in a compressed state.

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