Airfield pavement deflection detection device and detection method

Abstract

The invention discloses an airport pavement deflection detection device and method, and relates to the technical field of pavement deflection detection.The airport pavement deflection detection device comprises a main body, moving parts are fixedly installed on the two sides of the main body, and meanwhile a test piece is fixedly installed in the middle of the inner wall of the main body; positioning blocks are fixedly mounted on the inner wall of the main body and are positioned on the two sides of the test piece; according to the airfield pavement deflection detection device and method, the detection precision is improved, it is ensured that errors caused by uneven ground or instability of the equipment in the measurement process of the equipment are avoided, the equipment can better adapt to different gradients or ground changes, and the stability and accuracy of the detection device are kept.

Description

Technical Field

[0001] The present invention relates to pavement deflection detection technology, and particularly to an airport pavement deflection detection device and a detection method. Background Art

[0002] It is mainly used for accurately measuring and evaluating the deflection of pavements such as airport runways, taxiways, and aprons (i.e., the vertical deformation of the pavement due to load action). The detection accuracy directly affects the judgment of the pavement health status and the maintenance decision-making; pavement deflection is a parameter characterizing the bearing capacity of the pavement, which is determined by the structure and material of the pavement and is a basic parameter that must be measured for any pavement. It is defined as: under the action of a specified standard load wheel, the total vertical deformation value generated on the subgrade or pavement surface at the wheel gap is the total deflection (the deformation difference between no-load and standard load); or the vertical rebound deformation value is called the rebound deflection (the deformation difference between standard full load and full unloading), with 0.01 mm as the unit.

[0003] In the Chinese invention patent with the publication number CN115325917B, an airport pavement deflection detection device and a detection method are disclosed. This airport pavement deflection detection device and detection method can apply the Benkelman beam deflection meter to the total deflection measurement, and improve the method of total deflection measurement. Without using the extremely difficult backward method, the load wheel and the detection end of the Benkelman beam can be accurately positioned easily, so that the Benkelman beam deflection meter can accurately measure the total deflection value. On this basis, the present invention can continuously perform total deflection measurement and rebound deflection measurement. When performing rebound deflection measurement, the rebound deflection data can be quickly obtained without unloading the counterweight or moving the device.

[0004] When the existing equipment is in use, the installation position, angle, etc. of the sensor in the mechanism may not be ideal, resulting in inaccurate measurement range of the sensor or incomplete data acquisition. At the same time, it may also be affected by external interference or its own mechanical movement and cause errors, affecting the detection result. Therefore, an airport pavement deflection detection device and a detection method are developed. Summary of the Invention

[0005] The purpose of the present invention is to provide an airport pavement deflection detection device and a detection method to solve the above deficiencies in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An airport pavement deflection detection device, including a main body, both sides of the main body are fixedly installed with moving parts, and at the same time, a testing part is fixedly installed at the middle position of the inner wall of the main body, and positioning blocks are fixedly installed on both sides of the inner wall of the main body and located on both sides of the testing part; An adjusting component, which is assembled on the inner wall of the positioning block, and the position of the detection component is adjusted through the adjusting component; A locking component, which is assembled at the end of the adjusting component, fixes the detecting component through the locking component, and cooperates with the adjusting component to precisely adjust the detecting component; Wherein, the adjusting component includes a sliding plate slidably connected to the positioning block, a driving member is fixedly installed at the end of the sliding plate, a crankshaft is fixedly installed at the output end of the driving member, and a driving rod is sequentially rotatably installed on the outer surface of the crankshaft; A limiting block is fixedly installed at the end of the sliding plate and on one side of the crankshaft. Moving blocks are symmetrically and slidably installed on the inner wall of the limiting block, and the end of the moving block is rotatably connected to the end of the driving rod; A driving block is fixedly installed at the end of the moving block, a movable rod is rotatably installed at the end of the driving block, a groove cylinder is fixedly installed at the end of the limiting block, a support plate is rotatably installed on the inner wall of the groove cylinder, and the end of the support plate is rotatably connected to the end of the movable rod.

[0007] As a further optimized solution of the present invention, protective rods are fixedly installed on the opposite sides of the two moving blocks, the ends of the protective rods are slidably connected to the side surface of the driving block, and the protective rods are distributed in a crossed form.

[0008] As a further optimized solution of the present invention, a telescopic rod is fixedly installed at the end of the limiting block, and at the same time, a guiding groove is formed at the end of the support plate, and the inner wall of the guiding groove is slidably connected to the outer surface of the end of the telescopic rod.

[0009] As a further optimized solution of the present invention, the locking component includes a docking block clamped with the support plate, multiple buffer members are fixedly installed at the end of the docking block, and the multiple buffer members are evenly distributed at the end of the docking block.

[0010] As a further optimized solution of the present invention, a fixing plate is fixedly installed at the end of the buffer member, and a protective cylinder is rotatably installed at the end of the fixing plate.

[0011] As a further optimized solution of the present invention, a moving rod is slidably installed at one end of the fixing plate away from the protective cylinder, and the end of the moving rod penetrates and extends to the other end of the fixing plate, and the end of the moving rod is located in the inner cavity of the protective cylinder.

[0012] As a further optimized solution of the present invention, a turntable is fixedly installed at the end of the moving rod, the outer surface of the turntable is fixedly connected to the inside of the protective cylinder, and at the same time, a torsion spring is sleeved on the outer surface of the moving rod, one end of the torsion spring is connected to the fixing plate, and the other end is fixedly connected to the end of the turntable.

[0013] As a further optimized solution of the present invention, a plurality of arc-shaped grooves are provided at the end of the turntable, and the plurality of arc-shaped grooves are evenly distributed at the end of the turntable. At the same time, a power rod is slidably installed inside the arc-shaped groove, and a clamping block is rotatably installed on the outer surface of the power rod.

[0014] As a further optimized solution of the present invention, a limiting rod corresponding to the power rod is rotatably installed at the end of the fixed plate, and the end of the limiting rod is rotatably connected to the end of the power rod.

[0015] An airport pavement deflection detection method uses the detection device as described in any one of the above. The detection method includes the following steps: S1. When the driving rod moves, it synchronously drives the moving block rotatably installed at its end to move. A moving groove is provided on the inner wall of the limiting block, and the inner wall of the moving groove is slidably connected to the outer surface of the moving block. Thus, when the moving block moves, it moves along a specified trajectory. S2. When the moving block moves, it drives the driving block fixedly installed at its end to move, and when the driving block moves, it drives the movable rod rotatably installed at its end to move. Since the end of the movable rod is rotatably connected to the end of the support plate; Thus, when the movable rod moves, it drives the support plate to rotate around the inner wall of the groove cylinder, and drives the detection component fixedly clamped at its end to adjust the angle until it stops after reaching the optimal angle. S3. When the turntable rotates, it drives the power rod slidably installed inside it in cooperation with the arc-shaped groove, so that the power rod expands outward or contracts toward the middle synchronously until it stops after locking the detection component. At the same time, the detection component is further fixed by the clamping block fixedly installed on the power rod.

[0016] Compared with the prior art, an airport pavement deflection detection device and detection method provided by the present invention have the following beneficial effects: improving the detection accuracy, ensuring that the device will not cause errors due to uneven ground or unstable device itself during the measurement process, enabling the device to better adapt to different slopes or ground changes, and maintaining the stability and accuracy of the detection device.

[0017] Simplifying the adjustment operation, the operator can complete the height and angle adjustment of the device through simple adjustment, reducing the complexity of manual debugging.

[0018] Enhancing the durability of the detection device, reducing the vibration or wear of the device caused by unstable support, and improving the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Schematic diagram of the overall structure provided by the embodiment of the present invention; Figure 2 Schematic diagram of the overall internal structure provided by the embodiment of the present invention; Figure 3 Schematic diagram of the structure of the adjustment component and the locking component provided by the embodiment of the present invention; Figure 4 First schematic diagram of the structure of the adjustment component provided by the embodiment of the present invention; Figure 5 Second schematic diagram of the structure of the adjustment component provided by the embodiment of the present invention; Figure 6 First cross-sectional view of the internal structure of the adjustment component provided by the embodiment of the present invention; Figure 7 Second cross-sectional view of the internal structure of the adjustment component provided by the embodiment of the present invention; Figure 8 Schematic diagram of the structure of the locking component provided by the embodiment of the present invention; Figure 9 First cross-sectional view of the internal structure of the locking component provided by the embodiment of the present invention; Figure 10 Second cross-sectional view of the internal structure of the locking component provided by the embodiment of the present invention.

[0021] Explanation of reference numerals: 1, main body; 2, adjustment component; 3, locking component; 11, moving part; 12, test part; 13, positioning block; 21, sliding plate; 22, driving part; 23, crankshaft; 24, driving rod; 25, limiting block; 26, moving block; 261, protective rod; 27, driving block; 28, movable rod; 29, groove cylinder; 291, supporting plate; 292, guiding groove; 293, telescopic rod; 31, docking block; 32, buffer part; 33, fixing plate; 331, protective cylinder; 34, moving rod; 35, turntable; 36, arc groove; 37, torsion spring; 38, power rod; 381, clamping block; 39, limiting rod. Detailed implementation manners

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention 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, so it should not be construed as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, unless otherwise clearly defined and limited, the terms "installed", "connected", "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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0024] Embodiment 1

[0025] Please refer to Figures 1-10 , an airport pavement deflection detection device, including a main body 1. Moving members 11 are fixedly installed on both sides of the main body 1. At the same time, a testing member 12 is fixedly installed at the middle position of the inner wall of the main body 1, and positioning blocks 13 are fixedly installed on both sides of the inner wall of the main body 1 and located on both sides of the testing member 12.

[0026] In this solution, the moving member 11 is composed of a motor and rollers. The motor drives the rollers to rotate, thereby driving the main body 1 to move. At the same time, the testing member 12 is a vehicle-mounted falling weight deflectometer, which is used to test the site and cooperate with the detection sensor to detect the site state.

[0027] A positioning groove is opened on one side of the positioning block 13. At the same time, equipment with a telescopic function such as an electric telescopic rod is fixedly installed on the inner wall of the positioning groove. The electric telescopic rod drives the adjusting assembly 2 to move up and down until the adjusting assembly 2 reaches the optimal position and then stops.

[0028] Further, the adjusting component 2 is assembled on the inner wall of the positioning block 13, and the position of the detecting component is adjusted by the adjusting component 2; wherein, the adjusting component 2 includes a sliding plate 21 slidably connected to the positioning block 13, a driving member 22 is fixedly installed at the end of the sliding plate 21, a crankshaft 23 is fixedly installed at the output end of the driving member 22, and a driving rod 24 is rotatably installed on the outer surface of the crankshaft 23 in sequence.

[0029] In this embodiment, the driving member 22 is a device with power output such as a motor and is connected to an external control device. When the driving member 22 is started, it synchronously drives the crankshaft 23 fixedly installed at its output end to rotate, and at the same time, when the crankshaft 23 rotates, it drives the driving rod 24 rotatably installed on its outer surface to move.

[0030] Further, a limiting block 25 is fixedly installed at the end of the sliding plate 21 and on one side of the crankshaft 23. Moving blocks 26 are symmetrically and slidably installed on the inner wall of the limiting block 25, and the end of the moving block 26 is rotatably connected to the end of the driving rod 24.

[0031] Specifically, when the driving rod 24 moves, it synchronously drives the moving block 26 rotatably installed at its end to move. A moving groove is provided on the inner wall of the limiting block 25, and the inner wall of the moving groove is slidably connected to the outer surface of the moving block 26. Thus, when the moving block 26 moves, it moves along a specified track to prevent it from falling off.

[0032] Further, a driving block 27 is fixedly installed at the end of the moving block 26, a movable rod 28 is rotatably installed at the end of the driving block 27, a groove cylinder 29 is fixedly installed at the end of the limiting block 25, a supporting plate 291 is rotatably installed on the inner wall of the groove cylinder 29, and the end of the supporting plate 291 is rotatably connected to the end of the movable rod 28.

[0033] Specifically, when the moving block 26 moves, it drives the driving block 27 fixedly installed at its end to move, and when the driving block 27 moves, it drives the movable rod 28 rotatably installed at its end to move. Since the end of the movable rod 28 is rotatable with the end of the supporting plate 291, when the movable rod 28 moves, it drives the supporting plate 291 to rotate around the inner wall of the groove cylinder 29 and drives the detecting component fixedly clamped at its end to adjust the angle until it stops at the optimal angle.

[0034] The middle position of the end of the supporting plate 291 is spherical, so that when the supporting plate 291 is fitted into the inner wall of the groove cylinder 29 and the supporting plate 291 is forced to move, it can move freely.

[0035] Further, protective rods 261 are fixedly installed on the opposite sides of the two moving blocks 26, the ends of the protective rods 261 are slidably connected to the sides of the driving block 27, and the protective rods 261 are distributed in a cross form.

[0036] Specifically, the protective rod 261 limits the driving block 27. A driving groove is formed on one side of the driving block 27, and the inner wall of the driving groove is slidably connected to the outer surface of the protective rod 261. Since the cross-section of the protective rod 261 is X-shaped, the driving block 27 can maintain a stable state when moving.

[0037] Furthermore, a telescopic rod 293 is fixedly installed at the end of the limiting block 25. At the same time, a guiding groove 292 is formed at the end of the supporting plate 291, and the inner wall of the guiding groove 292 is slidably connected to the outer surface of the end of the telescopic rod 293.

[0038] Specifically, the telescopic rod 293 is a device with a telescopic function such as an electric telescopic rod and is connected to an external control device. A locking block is provided at the end of the telescopic rod 293, and the outer surface of the locking block is slidably connected to the inner wall of the guiding groove 292. At the same time, the locking block is fitted into the inner wall of the guiding groove 292, so that when the telescopic rod 293 is activated, the supporting plate 291 is driven to rotate around the groove cylinder 29. The guiding groove 292 provides a movement track for the locking block to ensure the stability of the supporting plate 291 during operation.

[0039] Furthermore, a locking assembly 3 is assembled at the end of the adjusting assembly 2. The detection component is fixed by the locking assembly 3, and the detection component is precisely adjusted in cooperation with the adjusting assembly 2. The locking assembly 3 includes a docking block 31 clamped to the supporting plate 291. A plurality of buffer members 32 are fixedly installed at the end of the docking block 31, and the plurality of buffer members 32 are evenly distributed at the end of the docking block 31. A fixing plate 33 is fixedly installed at the end of the buffer member 32, and a protective cylinder 331 is rotatably installed at the end of the fixing plate 33.

[0040] In this embodiment, a fixing component such as a clamp is provided at the end of the docking block 31 to firmly fix the docking block 31 on the supporting plate 291 and rotate with the supporting plate 291.

[0041] The buffer member 32 is composed of a cylinder, a round rod and a spring. At the same time, the inner wall of the cylinder is slidably connected to the outer surface of the round rod. One end of the spring is fixedly connected to the inner wall of the cylinder, and the other end is fixedly connected to the end of the round rod. The end of the round rod is fixedly connected to the fixing plate 33, thereby reducing the vibration received by the fixing plate 33.

[0042] Furthermore, a moving rod 34 is slidably installed at one end of the fixing plate 33 away from the protective cylinder 331, and the end of the moving rod 34 penetrates and extends to the other end of the fixing plate 33. The end of the moving rod 34 is located in the inner cavity of the protective cylinder 331.

[0043] Specifically, an electric telescopic rod or other devices with telescopic functions are provided at the end of the moving rod 34. The electric telescopic rod drives the moving rod 34 to move. Since the end of the moving rod 34 extends to one end of the fixed plate 33, the moving rod 34 drives the turntable 35 to move.

[0044] Further, a turntable 35 is fixedly installed at the end of the moving rod 34. The outer surface of the turntable 35 is fixedly connected to the inside of the protective cylinder 331. At the same time, a torsion spring 37 is sleeved on the outer surface of the moving rod 34. One end of the torsion spring 37 is connected to the fixed plate 33, and the other end is fixedly connected to the end of the turntable 35.

[0045] Specifically, when the protective cylinder 331 rotates, it drives the turntable 35 fixedly installed on its inner wall to rotate, thereby squeezing the torsion spring 37 connected to the end of the turntable 35. After the protective cylinder 331 is released, the turntable 35 is restored to its initial position by the acting force of the torsion spring 37.

[0046] Further, a plurality of arc-shaped grooves 36 are formed at the end of the turntable 35, and the plurality of arc-shaped grooves 36 are evenly distributed at the end of the turntable 35. At the same time, a power rod 38 is slidably installed inside the arc-shaped groove 36, and a clamping block 381 is rotatably installed on the outer surface of the power rod 38.

[0047] Specifically, when the turntable 35 rotates, it drives the power rod 38 slidably installed on its inner wall to move in cooperation with the arc-shaped groove 36, so that the power rod 38 expands outward or contracts toward the middle synchronously until it stops after locking the detection component. At the same time, the clamping block 381 fixedly installed on the power rod 38 further fixes the detection component.

[0048] Further, a limiting rod 39 corresponding to the power rod 38 is rotatably installed at the end of the fixed plate 33, and the end of the limiting rod 39 is rotatably connected to the end of the power rod 38.

[0049] Specifically, the power rod 38 is limited by the limiting rod 39, so that when the power rod 38 is stressed, one end of it is rotatably connected to the limiting rod 39. When the power rod 38 moves, it rotates along the connection between the limiting rod 39 and the fixed plate 33, thereby ensuring the stability of the power rod 38 during movement.

[0050] The control device can select a single-chip microcomputer as the control terminal. In this embodiment, the single-chip microcomputer is a typical embedded microcontroller (Micro controller Unit), which is composed of an arithmetic unit, a controller, a memory, input and output devices, etc., and is equivalent to a microcomputer. Compared with the general-purpose microprocessor applied in a personal computer, it emphasizes more on self-supply (without external hardware) and cost savings. Its biggest advantage is its small size, which can be placed inside the instrument, but its storage capacity is small, the input and output interfaces are simple, and the function consumption is low.

[0051] Embodiment 2

[0052] An airport pavement deflection detection method uses the detection device of any one of the above, and the detection method includes the following steps: S1. When the driving rod 24 moves, it synchronously drives the moving block 26 rotatably installed at its end to move. The inner wall of the limiting block 25 is provided with a moving groove, and the inner wall of the moving groove is slidably connected to the outer surface of the moving block 26. Thus, when the moving block 26 moves, it moves along a specified track; S2. When the moving block 26 moves, it drives the driving block 27 fixedly installed at the end of the moving block 26 to move, and when the driving block 27 moves, it drives the movable rod 28 rotatably installed at its end to move. Since the end of the movable rod 28 is rotatable with the end of the support plate 291; Thus, when the movable rod 28 moves, it drives the support plate 291 to rotate around the inner wall of the groove cylinder 29, and drives the detection component fixedly clamped at its end to adjust the angle until it stops after reaching the optimal angle; S3. When the turntable 35 rotates, it cooperates with the arc groove 36 to drive the power rod 38 slidably installed on its inner wall to move, so that the power rod 38 expands outward or contracts toward the middle synchronously until it stops after locking the detection component. At the same time, the clamping block 381 fixedly installed on the power rod 38 further fixes the detection component.

[0053] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. An airport pavement deflection detection device, characterized in that It includes a main body (1), on both sides of which are fixedly installed moving parts (11). At the same time, a test part (12) is fixedly installed at the middle position of the inner wall of the main body (1), and positioning blocks (13) are fixedly installed on both sides of the inner wall of the main body (1) and located on both sides of the test part (12). An adjustment component (2) is assembled on the inner wall of the positioning block (13), and the position of the detection component is adjusted through the adjustment component (2). A locking component (3) is assembled at the end of the adjustment component (2), and the detection component is fixed through the locking component (3), and the detection component is precisely adjusted in cooperation with the adjustment component (2). Among them, the adjustment component (2) includes a sliding plate (21) slidably connected to the positioning block (13). A driving part (22) is fixedly installed at the end of the sliding plate (21), and a crankshaft (23) is fixedly installed at the output end of the driving part (22). A driving rod (24) is sequentially rotatably installed on the outer surface of the crankshaft (23). A limiting block (25) is fixedly installed at the end of the sliding plate (21) and on one side of the crankshaft (23). Moving blocks (26) are symmetrically and slidably installed on the inner wall of the limiting block (25), and the end of the moving block (26) is rotatably connected to the end of the driving rod (24). A driving block (27) is fixedly installed at the end of the moving block (26). An activity rod (28) is rotatably installed at the end of the driving block (27). A groove cylinder (29) is fixedly installed at the end of the limiting block (25). A support plate (291) is rotatably installed on the inner wall of the groove cylinder (29), and the end of the support plate (291) is rotatably connected to the end of the activity rod (28).

2. The pavement deflection detecting device for airport according to claim 1, characterized in that, On the opposite sides of the two moving blocks (26), protection rods (261) are fixedly installed. The ends of the protection rods (261) are slidably connected to the side surface of the driving block (27), and the protection rods (261) are distributed in a cross form.

3. The airport pavement deflection detection device according to claim 2, characterized in that, A telescopic rod (293) is fixedly installed at the end of the limiting block (25). At the same time, a guiding groove (292) is opened at the end of the support plate (291), and the inner wall of the guiding groove (292) is slidably connected to the outer surface of the end of the telescopic rod (293).

4. An airport pavement deflection detection device according to claim 1, characterized in that, The locking component (3) includes a docking block (31) clamped to the support plate (291). A plurality of buffer components (32) are fixedly installed at the end of the docking block (31), and the plurality of buffer components (32) are evenly distributed at the end of the docking block (31).

5. The deflection detection device for airport pavement according to claim 4, wherein, A fixing plate (33) is fixedly installed at the end of the buffer component (32). A protection cylinder (331) is rotatably installed at the end of the fixing plate (33).

6. The airport pavement deflection detection device according to claim 5, characterized in that, A moving rod (34) is slidably installed at one end of the fixing plate (33) away from the protection cylinder (331), and the end of the moving rod (34) penetrates and extends to the other end of the fixing plate (33). The end of the moving rod (34) is located inside the cavity of the protection cylinder (331).

7. The airport pavement deflection detection device according to claim 6, characterized in that, A turntable (35) is fixedly installed at the end of the movable rod (34), the outer surface of the turntable (35) is fixedly connected to the inside of the protective cylinder (331), and at the same time, a torsion spring (37) is sleeved on the outer surface of the movable rod (34). One end of the torsion spring (37) is connected to the fixed plate (33), and the other end is fixedly connected to the end of the turntable (35).

8. The airport pavement deflection detection device according to claim 7, wherein, A plurality of arc-shaped grooves (36) are formed at the end of the turntable (35), and the plurality of arc-shaped grooves (36) are evenly distributed at the end of the turntable (35). At the same time, a power rod (38) is slidably installed inside the arc-shaped groove (36), and a clamping block (381) is rotatably installed on the outer surface of the power rod (38).

9. The airport pavement deflection detection device according to claim 8, characterized in that, A limiting rod (39) corresponding to the power rod (38) is rotatably installed at the end of the fixed plate (33), and the end of the limiting rod (39) is rotatably connected to the end of the power rod (38).

10. A method for detecting the deflection of airport pavement, characterized in that, Using the detection device described in any one of claims 1-9, the detection method includes the following steps: S1. When the driving rod (24) moves, it synchronously drives the moving block (26) rotatably installed at its end to move. A moving groove is formed in the inner wall of the limiting block (25), and the inner wall of the moving groove is slidably connected to the outer surface of the moving block (26). Thus, when the moving block (26) moves, it moves along a specified track. S2. When the moving block (26) moves, it drives the driving block (27) fixedly installed at the end of the moving block (26) to move, and when the driving block (27) moves, it drives the movable rod (28) rotatably installed at its end to move. Since the end of the movable rod (28) is rotatably connected to the end of the support plate (291). Thus, when the movable rod (28) moves, it drives the support plate (291) to rotate around the inner wall of the groove cylinder (29), and drives the detection component fixedly clamped at its end to adjust the angle until it stops after reaching the optimal angle. S3. When the turntable (35) rotates, it drives the power rod (38) slidably installed inside it to move in cooperation with the arc-shaped groove (36), so that the power rod (38) expands outward or contracts toward the middle synchronously until it stops after locking the detection component. At the same time, the clamping block (381) fixedly installed on the power rod (38) further fixes the detection component.

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