Device and method for detecting bearing capacity of airport runway foundation

Abstract

The invention relates to a device and method for detecting the bearing capacity of an airport runway foundation, and belongs to the technical field of airport runway detection.The device comprises a box body, and the top of the box body is provided with a pressing mechanism which penetrates through the top wall of the box body and can apply pressure to the runway foundation; the top of the box body is further provided with two adjusting mechanisms which penetrate through the top wall of the box body and can switch detection modes, the two adjusting mechanisms are located on the left side and the right side of the press-fit mechanism respectively, the inner bottom wall of the box body is provided with a supporting assembly used for supporting a runway foundation, and a servo controller is fixed to the left side of the box body. According to the device and method for detecting the bearing capacity of the airport runway foundation, pressure can be stably applied to the runway foundation through cooperation of the pressing mechanism and the supporting assembly, then the pressure is recorded through the patch type pressure sensor, and the displacement of the pressure block is calculated by recording the rotation angle of the driving motor; therefore, the strength and the toughness of the foundation can be effectively calculated, and the detection modes can be freely switched according to requirements.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of airport runway detection, in particular to a detection device and method for bearing capacity of airport runway foundation. BACKGROUND

[0002] The airport runway foundation is the basic layer of the pavement structure, and the bearing capacity is improved by strong ramming and replacement, etc., to ensure the stability of the runway during the take-off and landing of the aircraft, and to prevent safety accidents caused by settlement or deformation. The airport runway foundation is an important structure supporting the take-off or landing of the aircraft, and therefore the bearing capacity of the airport runway foundation needs to be detected to ensure the safety of its use.

[0003] Currently, there are two detection schemes, one of which is three-dimensional ground penetrating radar that uses electromagnetic waves to detect underground cavities, voids and broken force transmission rods, and the other is core sampling that uses drilling tools to take out sample blocks of the airport runway foundation for detection by a detection device.

[0004] However, the current detection device has a single detection item, and multiple devices are needed for multi-aspect detection of the foundation block, which increases the monitoring cost and reduces the monitoring efficiency. Therefore, a detection device and method for bearing capacity of the airport runway foundation are proposed to solve the above problems. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a detection device and method for bearing capacity of the airport runway foundation, which has the advantages of being able to detect the foundation in multiple aspects, and solves the problem of single detection item of the detection device.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a detection device and method for bearing capacity of the airport runway foundation, comprising a box body, a pressing mechanism penetrating the top wall of the box body and capable of pressing the runway foundation is arranged on the top of the box body, two adjusting mechanisms penetrating the top wall of the box body and capable of switching the detection mode are arranged on the top of the box body, the two adjusting mechanisms are respectively located on the left and right sides of the pressing mechanism, a supporting assembly for supporting the runway foundation is arranged on the inner bottom wall of the box body, and a servo controller is fixed on the left side of the box body. Each adjusting mechanism comprises a servo motor fixed to the top of the box body, one end of the output shaft of each servo motor is fixed with a threaded rod penetrating the top wall of the box body, and a switching part is arranged on the outer surface of each threaded rod.

[0007] Further, each of the switching parts comprises a limiting strip fixed to the inner top wall of the box, the outer surface of each of the threaded rods is threadedly connected with an upper clamping plate and a lower clamping plate, the top of the lower clamping plate is fixed with a plane bearing, the top of each of the plane bearings is fixed with a driven gear, the inner side of each of the driven gears is clamped with a rotating cylinder, and the inner side of each of the rotating cylinders is fixed with a driven rod.

[0008] Further, each of the threaded rods is rotationally connected with the inner bottom wall of the box through a bearing, the left side of each of the limiting strips is provided with a limiting hole penetrating through the limiting strip, the limiting hole is in a strip shape, and each of the upper clamping plate and the lower clamping plate penetrates through the limiting strip through the limiting hole and is attached to the inner wall of the limiting hole.

[0009] Further, the pressing mechanism comprises a driving motor fixed to the top of the box, one end of the output shaft of the driving motor is fixed with a connecting rod penetrating through the top wall of the box, the inner top wall of the box is fixed with a speed reducer, the input end of the speed reducer is fixed with the connecting rod, the output end of the speed reducer is fixed with a driving rod, the outer surface of the driving rod is fixed with a driving gear, and the outer surface of the driving rod and below the driving gear is provided with a pressure part.

[0010] Further, the pressure part comprises three threaded sleeves, the bottom of each of the three threaded sleeves is fixed with a pressure block, the opposite side of each of the two threaded sleeves is fixed with a limiting seat, and the limiting rods are movably connected between the two limiting seats.

[0011] Further, the two threaded sleeves located on the left and right sides are threadedly connected with the outer surface of the driven rod, and the threaded sleeve located in the middle is threadedly connected with the driving rod.

[0012] Further, the supporting assembly comprises a connecting frame threadedly connected with the two threaded rods, the top of the connecting frame is fixed with a moving block, the left and right sides of the moving block are attached with stable blocks, the bottom of each of the stable blocks is fixed with two supporting legs, and each of the supporting legs is fixed with the inner bottom wall of the box.

[0013] Further, the opposite side of the three pressure blocks, the two stable blocks and the moving block is fixed with a patch type pressure sensor, the bottom of the two pressure blocks located on the left and right sides is fixed with a limiting plate, and the bottom of the two limiting plates is attached to the top of the middle pressure block.

[0014] Further, the front of the box is hingedly connected with a movable door through a hinge, and the movable door is inlaid with an observation window. A method for detecting the bearing capacity of an airport runway foundation comprises the following steps: 1) Place the airport runway foundation block on the support assembly, continuously apply pressure to the airport runway foundation block through the pressing mechanism, sense the pressure size through the patch type pressure sensor, cooperate with the driving motor rotation angle and the threaded lifting angle to calculate the downward movement distance, so as to analyze the deformation degree of the airport runway foundation block under different pressures.

[0015] 2) When the shear strength of the airport runway foundation block needs to be detected, only the adjusting mechanism is started to move the moving block downward, and the left and right pressure blocks are locked, and the pressing mechanism is started, at this time only the middle pressure block will move downward, and the downward movement distance is calculated and the patch type pressure sensor is used to sense the pressure size, so as to analyze the shear strength of the airport runway foundation block.

[0016] Compared with the prior art, the present application provides a detection device and method for the bearing capacity of the airport runway foundation, which has the following beneficial effects: 1) The detection device and method for the bearing capacity of the airport runway foundation, through the cooperation of the pressing mechanism and the support assembly, can stably apply pressure to the runway foundation, and then record the pressure size through the patch type pressure sensor, and calculate the displacement of the pressure block by recording the rotation angle of the driving motor, so as to effectively calculate the strength and toughness of the foundation.

[0017] 2) The detection device and method for the bearing capacity of the airport runway foundation, through the adjusting mechanism, different detection modes can be freely switched, when the adjusting mechanism is started and the pressing mechanism is started, the shear resistance of the airport runway foundation can be detected, and when the adjusting mechanism is started in the opposite direction, the compression resistance of the airport runway foundation can be detected. DETAILED DESCRIPTION

[0018] Fig. 1 The present application is a structural schematic diagram; Fig. 2 The present application is a structural schematic diagram of the pressure part; Fig. 3 The present application is a structural schematic diagram of the switching part; Fig. 4 The present application is a three-dimensional sectional view of the connection relationship between the driven gear and the rotating cylinder; Fig. 5 The present application is a structural schematic diagram of the support assembly.

[0019] In the figure: 1 box, 2 compression mechanism, 201 drive motor, 202 speed reducer, 203 drive rod, 204 driving gear, 205 pressure part, 2051 threaded sleeve, 2052 pressure block, 2053 limit seat, 2054 limit rod, 3 adjustment mechanism, 301 servo motor, 302 threaded rod, 303 switching part, 3031 limit strip, 3032 upper clamping plate, 3033 driven gear, 3034 rotating cylinder, 3035 driven rod, 3036 lower clamping plate, 4 support assembly, 401 connecting frame, 402 moving block, 403 stabilizing block, 404 support leg, 5 servo controller. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Please refer to Figs. 1-2 The airport runway foundation bearing capacity detection device and method in the embodiment includes a box 1, the top of the box 1 is provided with a compression mechanism 2 penetrating the top wall of the box 1 and capable of pressing the runway foundation, the top of the box 1 is also provided with two adjustment mechanisms 3 penetrating the top wall of the box 1 and capable of switching the detection mode, the two adjustment mechanisms 3 are respectively located on the left and right sides of the compression mechanism 2, the inner bottom wall of the box 1 is provided with a support assembly 4 for supporting the runway foundation, the left side of the box 1 is fixed with a servo controller 5, the servo controller 5 is used for controlling the two adjustment mechanisms 3 to ensure that the two adjustment mechanisms 3 operate synchronously, the front of the box 1 is hinged with a movable door, the movable door is inlaid with an observation window, after the detection is completed, the sample can be taken out directly by opening the movable door, and the observation window is made of explosion-proof glass.

[0022] In addition, the compression mechanism 2 includes a drive motor 201 fixed with the top of the box 1, the drive motor 201 is used for providing reliable and stable power for the whole compression mechanism 2, one end of the output shaft of the drive motor 201 is fixed with a connecting rod penetrating the top wall of the box 1, the inner top wall of the box 1 is fixed with a speed reducer 202, the speed reducer 202 is used for reducing the rotating speed and increasing the torque, the input end of the speed reducer 202 is fixed with the connecting rod, the output end of the speed reducer 202 is fixed with a drive rod 203, the outer surface of the drive rod 203 is fixed with a driving gear 204, the driving gear 204 is used for outputting power, the outer surface of the drive rod 203 and below the driving gear 204 is provided with a pressure part 205, when the drive rod 203 rotates, the pressure part 205 can be stably driven to move downward.

[0023] It needs to be further pointed out that the pressure part 205 includes three threaded sleeves 2051, the bottoms of the three threaded sleeves 2051 are fixedly provided with pressure blocks 2052, the opposite sides of every two threaded sleeves 2051 are fixedly provided with limiting seats 2053, the limiting rods 2054 are movably connected between every two limiting seats 2053, the opposite sides of every two limiting seats 2053 are provided with T-shaped grooves, the left and right sides of each limiting rod 2054 are fixedly provided with connecting blocks extending into the two T-shaped grooves, and the connecting blocks movably connect with the T-shaped grooves.

[0024] In the embodiment, the limiting rods 2054 and the limiting seats 2053 cooperate to limit the three threaded sleeves 2051, and due to the existence of the T-shaped grooves, the left and right threaded sleeves 2051 can move up and down relative to the middle threaded sleeve 2051.

[0025] Please refer again to Figs. 1-5 In order to adapt to different detection modes, each adjusting mechanism 3 in the embodiment includes a servo motor 301 fixedly connected with the top of the box body 1, two servo motors 301 can be simultaneously controlled by the servo controller 5, so that the two servo motors 301 can be simultaneously and synchronously operated, one end of the output shaft of each servo motor 301 is fixedly provided with a threaded rod 302 penetrating through the top wall of the box body 1, and each threaded rod 302 is provided with a switching part 303 on the outer surface.

[0026] Secondly, each switching part 303 includes a limiting strip 3031 fixedly connected with the inner top wall of the box body 1, the outer surface of each threaded rod 302 is threadedly connected with an upper clamping plate 3032 and a lower clamping plate 3036, the bottom of the upper clamping plate 3032 is fixedly provided with a friction plate, when the friction plate contacts with a driven gear 3033, the pressure of the upper clamping plate 3032 on the driven gear 3033 can smoothly clamp and lock the driven gear 3033, the top of the lower clamping plate 3036 is fixedly provided with a plane bearing, the plane bearing can ensure that the rotation of the driven gear 3033 does not affect the lower clamping plate 3036, a driven rod 3035 penetrates through the lower clamping plate 3036, the top of each plane bearing is fixedly provided with a driven gear 3033, the inner side of each driven gear 3033 is clamped with a rotating cylinder 3034, the inner side of each rotating cylinder 3034 is fixedly provided with a driven rod 3035, and the two driven rods 3035 are rotatably connected with the inner top wall of the box body 1 through bearings.

[0027] It can be known that each threaded rod 302 is rotatably connected with the inner bottom wall of the box 1 through a bearing, the bearing can play a supporting role to improve the stability of the threaded rod 302, the left side of each limiting strip 3031 is provided with a limiting hole penetrating through the limiting strip 3031, the limiting hole is in a strip shape, each upper clamping plate 3032 and lower clamping plate 3036 penetrate through the limiting strip 3031 through the limiting hole and are fitted with the inner wall of the limiting hole, when the threaded rod 302 rotates, due to the role of the limiting hole, the upper clamping plate 3032 and the lower clamping plate 3036 can be limited, ensuring the smooth movement of the upper clamping plate 3032 and the lower clamping plate 3036, the two threaded sleeves 2051 located on the left and right sides are threadedly connected with the outer surface of the driven rod 3035, and the threaded sleeve 2051 located in the middle is threadedly connected with the driving rod 203.

[0028] In addition, the support assembly 4 comprises a connecting frame 401 threadedly connected with the two threaded rods 302, and the two threaded rods 302 limit the connecting frame 401 relative to each other, so that under the driving of the two threaded rods 302, the connecting frame 401 can be displaced up and down without other limiting structures, the top of the connecting frame 401 is fixedly connected with a moving block 402, and the left and right sides of the moving block 402 are fitted with stable blocks 403, the bottom of each stable block 403 is fixedly connected with two support legs 404, and the support legs 404 are used for improving the stability of the stable block 403. Each support leg 404 is fixedly connected with the inner bottom wall of the box 1.

[0029] Further, the three pressure blocks 2052, the opposite sides of the two stable blocks 403 and the moving block 402 are fixedly connected with patch type pressure sensors, the patch type pressure sensors are Kulite HKS-HP series, the sensor is high-temperature resistant, and the error is less than 0.1%, the bottoms of the two pressure blocks 2052 located on the left and right sides are fixedly connected with limiting plates, and the bottoms of the two limiting plates are fitted with the top of the middle pressure block 2052.

[0030] In the embodiment, the method for detecting the bearing capacity of an airport runway foundation comprises the following steps: 1) Place the airport runway foundation block on the support assembly 4, continuously apply pressure to the airport runway foundation block through the pressing mechanism 2, sense the pressure size through the patch type pressure sensor, cooperate with the rotation angle of the driving motor 201 to calculate the downward displacement distance, and thus analyze the deformation degree of the airport runway foundation block under different pressures.

[0031] 2) When the shear strength of the airport runway foundation block needs to be detected, only the adjusting mechanism 3 is started, the moving block 402 is lowered, the left and right pressure blocks 2052 are locked, and the pressing mechanism 2 is started, at this time only the middle pressure block 2052 is lowered, and the shear strength of the airport runway foundation block is analyzed by calculating the distance of the lowering and using the patch type pressure sensor to sense the pressure.

[0032] In the embodiment, the upper clamp plate 3032 and the lower clamp plate 3036 are driven by the threaded rod 302 to move close to each other, the driven gear 3033 is moved and locked, and power is output to the connecting frame 401 to lower the connecting frame 401, so as to switch the detection mode.

[0033] It can be understood that when the adjusting mechanism 3 is not started, the two driven gears 3033 are engaged with the driving gear 204, and when the adjusting mechanism 3 is started, the two driven gears 3033 are moved upward and disengaged from the driving gear 204.

[0034] The electrical components in the text are electrically connected with the controller and the power supply. The control mode of the application is controlled by the controller. The control circuit of the controller can be realized by simple programming of those skilled in the art. The power supply is also a common knowledge in the art. And the application is mainly used to protect the mechanical device, so the control mode and the circuit connection are not explained in detail.

[0035] The working principle of the above embodiment is: (1) When the compressive strength of the airport runway foundation block needs to be detected, the airport runway foundation block is placed on the supporting assembly 4, the driving motor 201 is started, the driving motor 201 drives the driving rod 203 to rotate, and power is transmitted to the two driven gears 3033 through the driving gear 204, so as to drive the two driven rods 3035 to rotate synchronously. Due to the action of the two limiting rods 2054, the three threaded sleeves 2051 cannot rotate at this time, so the three pressure blocks 2052 can be driven to move downward, the pressure of the airport runway foundation block is applied, the patch type pressure sensor senses the pressure, and the driving motor 201 rotates the angle to calculate the distance of the lowering, so as to analyze the deformation degree of the airport runway foundation block under different pressures.

[0036] (2) When the shear strength of the airport runway foundation block needs to be detected, two servo motors 301 are started to drive the two threaded rods 302 to rotate synchronously. At this time, the two upper clamping plates 3032 and the two lower clamping plates 3036 will move towards each other, driving the two driven gears 3033 to move upwards. At this time, the two driven gears 3033 are not engaged with the driving gear 204, and the connecting frame 401 drives the moving block 402 to move downwards. At this time, the driving motor 201 is started, and only the middle pressure block 2052 will move downwards. Similarly, by calculating the moving distance and using the patch pressure sensor to sense the pressure, the shear strength of the airport runway foundation block can be analyzed.

[0037] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... " does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0038] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, alternatives, and variations can be made in the embodiments without departing from the spirit and scope of the present application.

Claims

1. A device for detecting the bearing capacity of an airport runway foundation, comprising a box (1), characterized in that: The top of the box (1) is provided with a pressing mechanism (2) that penetrates the top wall of the box (1) and can apply pressure to the runway foundation. The top of the box (1) is also provided with two adjustment mechanisms (3) that penetrate the top wall of the box (1) and can switch the detection mode. The two adjustment mechanisms (3) are respectively located on the left and right sides of the pressing mechanism (2). The inner bottom wall of the box (1) is provided with a support assembly (4) for supporting the runway foundation. A servo controller (5) is fixed on the left side of the box (1). Each of the adjustment mechanisms (3) comprises a servo motor (301) fixed to the top of the box (1), a threaded rod (302) penetrating the top wall of the box (1) is fixed to one end of the output shaft of each of the servo motors (301), and a switching portion (303) is provided on the outer surface of each of the threaded rods (302).

2. The device for detecting the bearing capacity of an airport runway foundation according to claim 1, characterized in that: Each of the switching parts (303) comprises a limiting bar (3031) fixed to the inner top wall of the box body (1); the outer surface of each of the threaded rods (302) is threadedly connected to an upper clamping plate (3032) and a lower clamping plate (3036); a plane bearing is fixed to the top of the lower clamping plate (3036); a driven gear (3033) is fixed to the top of each of the plane bearings; a rotating cylinder (3034) is clamped to the inner side of each of the driven gears (3033); and a driven rod (3035) is fixed to the inner side of each of the rotating cylinders (3034).

3. The device for detecting the bearing capacity of an airport runway foundation according to claim 2, characterized in that: Each of the threaded rods (302) is rotatably connected to the inner bottom wall of the box body (1) via a bearing, and a limiting hole penetrating the limiting bar (3031) is provided on the left side of each of the limiting bars (3031), wherein the limiting hole is in the shape of an elongated strip, and each of the upper clamping plate (3032) and the lower clamping plate (3036) penetrates the limiting bar (3031) through the limiting hole and fits with the inner wall of the limiting hole.

4. The device for detecting the bearing capacity of an airport runway foundation according to claim 2, characterized in that: The pressing mechanism (2) comprises a driving motor (201) fixed to the top of the box body (1), a connecting rod penetrating the top wall of the box body (1) being fixed to one end of the output shaft of the driving motor (201), a reducer (202) being fixed to the inner top wall of the box body (1), an input end of the reducer (202) being fixed to the connecting rod, a driving rod (203) being fixed to the output end of the reducer (202), a driving gear (204) being fixed to the outer surface of the driving rod (203), and a pressure portion (205) being provided on the outer surface of the driving rod (203) and located below the driving gear (204).

5. The device for detecting the bearing capacity of an airport runway foundation according to claim 4, characterized in that: The pressure portion (205) comprises three threaded sleeves (2051), each of the three threaded sleeves (2051) having a pressure block (2052) fixed at its bottom, a limiting seat (2053) fixed on the opposite side of each two threaded sleeves (2051), and a limiting rod (2054) movably connected between each two limiting seats (2053).

6. The device for detecting the bearing capacity of an airport runway foundation according to claim 5, characterized in that: The two threaded sleeves (2051) located on the left and right sides are threadedly connected to the outer surface of the driven rod (3035), and the threaded sleeve (2051) located in the middle is threadedly connected to the driving rod (203).

7. The device for detecting the bearing capacity of an airport runway foundation according to claim 5, characterized in that: The support assembly (4) includes a connecting frame (401) threadedly connected to two threaded rods (302), a moving block (402) is fixed on the top of the connecting frame (401), and stabilizing blocks (403) are attached to the left and right sides of the moving block (402), and two supporting legs (404) are fixed to the bottom of each stabilizing block (403), and each supporting leg (404) is fixed to the inner bottom wall of the box body (1).

8. The device for detecting the bearing capacity of an airport runway foundation according to claim 7, characterized in that: The three pressure blocks (2052), the two stable blocks (403) and the movable block (402) are all fixed with patch-type pressure sensors on the opposite sides, and the bottoms of the two pressure blocks (2052) on the left and right sides are fixed with limit plates, and the bottoms of the two limit plates are both in contact with the top of the middle pressure block (2052).

9. The device for detecting the bearing capacity of an airport runway foundation according to claim 1, characterized in that: The front of the box (1) is hinged with a movable door via a hinge, and an observation window is embedded in the movable door.

10. A method for detecting the bearing capacity of an airport runway foundation, using the device for detecting the bearing capacity of an airport runway foundation as claimed in claim 1, characterized in that: The following steps are involved: 1) placing the airport runway foundation block on the support assembly (4), continuously applying pressure to the airport runway foundation block through the pressing mechanism (2), sensing the pressure through the patch pressure sensor, and calculating the downward movement distance in conjunction with the rotation angle of the drive motor (201) and the thread lead angle, thereby analyzing the degree of deformation of the airport runway foundation block under different pressures; 2) When it is necessary to detect the shear strength of the airport runway foundation block, it is only necessary to start the adjustment mechanism (3) to cause the movable block (402) to move downward, and at the same time lock the pressure blocks (2052) on the left and right sides, and start the pressing mechanism (2). At this time, only the middle pressure block (2052) will move downward. Similarly, the shear strength of the airport runway foundation block can be analyzed by calculating the downward movement distance and using the pressure sensor to sense the pressure when using the patch.

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