Wheel track device for measuring airfield pavement and movement method thereof

Abstract

The invention discloses a wheel track device for measuring an airfield pavement and a movement method of the wheel track device, and belongs to the technical field of wheel rolling tests. Comprising a limiting fixing frame which comprises four vertically-arranged frame rods and a top plate arranged at the tops of the frame rods; the cylinder is arranged below the top plate; the mounting plate is arranged at the bottom of the frame rod; the proportional valve is arranged at the bottom of the air cylinder and connected to the computer end control system. The main bearing rod is arranged on the lower side of the proportional valve and connected to the air cylinder. The damping spring is arranged on the lower side of the main bearing rod; the pressure sensor is arranged on the lower side of the damping spring and connected to the proportional valve. The two guide sleeves are arranged at the bottom of the mounting plate; the two telescopic mounting rods are arranged in the guide sleeves and are in bolted connection with the mounting plate; the two linear sliding assemblies are oppositely arranged on the two sides of the mounting plate and used for achieving driving of the device. According to the method, the parameters such as the rotating speed and the time are finely adjusted, a scientific basis is provided for pavement design and maintenance, and operation complexity and personal errors are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of wheel rolling test, and in particular relates to a wheel rutting device for measuring an airport pavement and a movement method thereof. Background Art

[0002] In the fields of materials science, civil engineering, and geological engineering, wheel rolling test is a commonly used test method to simulate the mechanical behavior of materials during compaction. The wheel tracker is a classic mechanical model that realizes motion by driving the wheels to rotate. It has the advantages of low energy consumption and easy operation. By simulating the actual operation of tires on the road surface, accurately measuring and recording the deformation of the road surface under different loads and speeds, it can provide a scientific basis for evaluating the wheel track disease of the road surface.

[0003] However, in the prior art, for airport pavement, the wheel rolling motion of the traditional wheel tracker often relies on a transmission device, such as a gear transmission or a chain transmission. These traditional transmission methods have problems such as low transmission efficiency, high noise, and easy damage: (1) At present, the wheel tracker relies on the wheel track plate device at the bottom to perform a back-and-forth cyclic motion. The greater the pressure, the higher the failure rate.

[0004] (2) The wheel pressure of conventional instruments is 0.7MPA. The pressure loading device usually uses the loading weight of the wheel vertical transmission system, but the loading weight needs to be placed and removed manually, which not only increases the complexity of the operation, but also may introduce human errors; (3) Conventional instruments are driven by crank connecting rods, and the connecting rod drives the working parts to reciprocate or rotate. The simplicity of this structure makes it advantageous in some applications, but the movement speed setting is fixed and cannot be adjusted; (4) When simulating tire movement at different speeds, the wheel speed and movement distance need to meet different requirements. The distance that the current wheel tracker can reach is limited to the size of the wheel track plate or the size of the drive shaft. It is not only easy to deviate, but also needs to be adjusted frequently. Therefore, a new wheel track device and its movement method for measuring airport pavement are needed to solve these problems. Summary of the invention

[0005] The present invention aims to solve the technical problems existing in the above-mentioned background technology and provides a wheel rutting device for measuring the pavement of an airport and a movement method thereof.

[0006] The present invention adopts the following technical scheme: a wheel track device for measuring the airport pavement, comprising: a position limiting fixing frame, the position limiting fixing frame comprising: a plurality of vertically arranged racks, and a top plate arranged on the top of the racks;

[0007] A cylinder, disposed on the lower side of the top plate;

[0008] A mounting plate, arranged at the bottom of the rack rod;

[0009] A proportional valve is arranged at the bottom of the cylinder and connected to a computer-side control system;

[0010] A main bearing rod, disposed on the lower side of the proportional valve and connected to the cylinder;

[0011] A damping spring, arranged on the lower side of the main bearing rod;

[0012] A pressure sensor is disposed on the lower side of the damping spring and connected to the proportional valve;

[0013] A plurality of guide sleeves are arranged at the bottom of the mounting plate;

[0014] A plurality of telescopic mounting rods are disposed in the guide sleeve and connected to the mounting plate;

[0015] At least two linear sliding components are arranged oppositely on two sides of the mounting plate.

[0016] Preferably, the linear sliding assembly includes: at least one slider arranged on the mounting plate, a slide rail slidably connected to the slider, a high-speed screw arranged on one side of the slide rail, a linear guide rod connected to one side of the high-speed screw rod, a linear module arranged on one side of the linear guide rod, and a servo motor connected to one side of the linear module.

[0017] Preferably, one end of the slide rail is connected to the fixed end of the high-speed screw, and the slide rail is placed in the same direction as the extension direction of the high-speed screw; and the mounting plate is connected to the movable end of the high-speed screw.

[0018] Preferably, the outer side wall of the high-speed screw and the slider, and the end of the slide rail and the slider are all provided with abutment sleeves.

[0019] Preferably, the position limiting fixing frame is a rectangular steel structure; and a plurality of openings are provided on the top plate.

[0020] A method for measuring wheel rutting movement of an airport pavement, used to implement a wheel rutting device for measuring an airport pavement, comprising the following steps:

[0021] S1, the test wheel to be tested is installed at the bottom of the telescopic mounting rod, the device is moved to the point to be tested, the telescopic mounting rod is adjusted, and the device is lifted to a predetermined position;

[0022] S2, reading the initial reading of the pressure sensor, and setting the rotation speed, time and stroke length through the computer-side control system;

[0023] S3, the servo motor starts to drive the linear guide rod and the linear module, the linear module drives the high-speed screw to move, the high-speed screw drives the mounting plate, the slider and the cylinder to slide back and forth along the slide rail, the tested experimental wheel moves along a predetermined path, the loading pressure data is calculated by air pressure, the loading pressure data is monitored and recorded by the pressure sensor, and a test is completed;

[0024] S4, continue to adjust the speed, time and stroke length and conduct the next test.

[0025] Beneficial effects of the present invention:

[0026] 1. A wheel rutting device for measuring airport pavement can achieve fine adjustment of parameters such as speed, time, and stroke length, and accurately control load pressure by setting up precise control of proportional valves and pressure sensors; a large amount of test data can be collected through real-time monitoring. This high-precision control method can ensure the accuracy and reliability of the test results, thereby more realistically simulating the contact between aircraft tires and pavement, providing a scientific basis for pavement design and maintenance, and reducing operational complexity and human errors;

[0027] 2. The telescopic mounting rod can adjust the height of the device, and the bottom can be installed with different types and sizes of tested test wheels to meet the needs of different road surface tests, enhance the test flexibility, and improve the versatility and applicability of the device;

[0028] 3. By setting up a linear sliding component and using a servo motor to drive the linear module, high-speed screw, etc. to reciprocate along the slide rail, the tested experimental wheel can move along the predetermined path without manual drive and frequent path adjustment, and it is not easy to deviate, thereby improving operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of a wheel rutting device for measuring the pavement of an airport;

[0030] Figure 2 The figure is a diagram of the use status of a wheel rutting device for measuring the pavement of an airport;

[0031] Figure numerals: limit fixing frame 1, opening 2, frame rod 3, top plate 4, cylinder 5, main bearing rod 6, slider 7, slide rail 8, mounting plate 9, telescopic mounting rod 10, high-speed screw 11, pressure sensor 12, shock-absorbing spring 13, bolt 14, proportional valve 15, abutment sleeve 16, linear guide rod 17, linear module 18, servo motor 19, guide sleeve 20. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the embodiments.

[0033] Embodiment 1

[0034] A wheel rutting device for measuring the pavement of an airport, such as Figure 1 and Figure 2 , including: a limit fixing frame 1, the limit fixing frame 1 includes: four vertically arranged frame rods 3 and a top plate 4 arranged on the top of the frame rod 3; a cylinder 5 is arranged on the lower side of the top plate 4; a mounting plate 9 is arranged at the bottom of the frame rod 3; a proportional valve 15 is arranged at the bottom of the cylinder 5 and connected to the computer end control system; a main bearing rod 6 is arranged on the lower side of the proportional valve 15 and connected to the cylinder 5; a shock absorbing spring 13 is arranged on the lower side of the main bearing rod 6; a pressure sensor 12 is arranged on the lower side of the shock absorbing spring 13 and connected to the proportional valve 15; two guide sleeves 20 are arranged at the bottom of the mounting plate 9; two telescopic mounting rods 10 are arranged in the guide sleeves 20 and connected to the mounting plate 9 by bolts 14; two linear sliding assemblies are arranged on both sides of the mounting plate 9 to realize the driving of the device. The limit fixing frame 1 is a rectangular steel structure, and the space formed with the mounting plate 9 realizes the limit fixing of the cylinder 5; a plurality of openings 2 are arranged on the top plate 4 for external connection and installation. The preset pressure is set by the proportional valve 15, and the pressure is increased by the cylinder 5. The shock-absorbing spring 13 reduces the amplitude of the operation process and realizes the protection of the device. The telescopic mounting rod 10 can adjust the height of the device, and the bottom can be installed with different types and sizes of tested test wheels to meet the needs of different road surface tests, enhance the test flexibility, and improve the versatility and applicability of the device.

[0035] In a further embodiment, the linear sliding assembly includes: two sliders 7 arranged on the mounting plate 9, a slide rail 8 slidably connected to the slider 7, a high-speed screw 11 arranged on one side of the slide rail 8, a linear guide rod 17 connected to one side of the high-speed screw 11, a linear module 18 arranged on one side of the linear guide rod 17, and a servo motor 19 connected to one side of the linear module 18. One end of the slide rail 8 is connected to the fixed end of the high-speed screw 11, and the slide rail 8 is placed in the same direction as the extension direction of the high-speed screw 11; the mounting plate 9 is connected to the movable end of the high-speed screw 11. The servo motor 19 is started to drive the linear guide rod 17 and the linear module 18, and the linear module 18 drives the high-speed screw 11 to move, and the high-speed screw 11 drives the mounting plate 9, the slider 7 and the cylinder 5 to slide back and forth along the slide rail 8 together, so that the tested experimental wheel moves along a predetermined path.

[0036] In a further embodiment, the outer wall of the high-speed screw 11 and the slider 7, the end of the slide rail 8 and the slider 7 are all provided with abutment sleeves 16 to share part of the force and reduce excessive force at the shaft abutment when the high-speed screw 11 and the servo motor 19 output power.

[0037] Embodiment 2

[0038] This embodiment describes a method for measuring wheel rutting movement on an airport pavement, comprising the following steps:

[0039] S1, the test wheel to be tested is installed at the bottom of the telescopic mounting rod 10, the device is moved to the point to be tested, the telescopic mounting rod 10 is adjusted, and the device is lifted to the predetermined position;

[0040] S2, reading the initial reading of the pressure sensor 12, and setting the speed, time and stroke length through the computer control system;

[0041] S3, the servo motor 19 starts to drive the linear guide rod 17 and the linear module 18, the linear module 18 drives the high-speed screw 11 to move, the high-speed screw 11 drives the mounting plate 9, the slider 7 and the cylinder 5 to slide back and forth along the slide rail 8, the tested experimental wheel moves along the predetermined path, the loading pressure data is calculated by the air pressure, and the loading pressure data is monitored and recorded by the pressure sensor 12, and a test is completed;

[0042] S4, continue to adjust the speed, time and stroke length and conduct the next test.

[0043] The above is a detailed introduction to a wheel rutting device and a movement method thereof for measuring an airport pavement provided by the present invention. It is worth noting that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical details described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any equivalent substitutions, modifications, etc. made within the core ideas and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wheel rutting device for measuring the pavement of an airport, characterized in that: include: A position-limiting fixing frame, the position-limiting fixing frame comprising: a plurality of rack rods arranged vertically, and a top plate arranged on the top of the rack rods; A cylinder, disposed on the lower side of the top plate; A mounting plate, arranged at the bottom of the rack rod; A proportional valve is arranged at the bottom of the cylinder and connected to a computer-side control system; A main bearing rod, disposed on the lower side of the proportional valve and connected to the cylinder; A damping spring, arranged on the lower side of the main bearing rod; A pressure sensor is disposed on the lower side of the damping spring and connected to the proportional valve; A plurality of guide sleeves are arranged at the bottom of the mounting plate; A plurality of telescopic mounting rods are disposed in the guide sleeve and connected to the mounting plate; At least two linear sliding components are arranged oppositely on two sides of the mounting plate.

2. A wheel rutting device for measuring an airport pavement according to claim 1, characterized in that: The linear sliding assembly includes: at least one slider arranged on the mounting plate, a slide rail slidably connected to the slider, a high-speed screw arranged on one side of the slide rail, a linear guide rod connected to one side of the high-speed screw rod, a linear module arranged on one side of the linear guide rod, and a servo motor connected to one side of the linear module.

3. A wheel rutting device for measuring an airport pavement according to claim 2, characterized in that: One end of the slide rail is connected to the fixed end of the high-speed screw rod, and the slide rail is placed in the same direction as the extension direction of the high-speed screw rod; the mounting plate is connected to the movable end of the high-speed screw rod.

4. A wheel rutting device for measuring an airport pavement according to claim 3, characterized in that: The outer side wall of the high-speed screw and the slider, the end of the slide rail and the slider are all provided with abutment sleeves.

5. The wheel rutting device for measuring the airport pavement according to claim 1, characterized in that: The position limiting fixing frame is a rectangular steel structure; a plurality of openings are arranged on the top plate.

6. A method for measuring wheel rutting on an airport pavement, characterized in that: Used to implement a wheel rutting device for measuring an airport pavement according to any one of claims 1 to 5, The following steps are involved: S1, the test wheel to be tested is installed at the bottom of the telescopic mounting rod, the device is moved to the point to be tested, the telescopic mounting rod is adjusted, and the device is lifted to a predetermined position; S2, reading the initial reading of the pressure sensor, and setting the rotation speed, time and stroke length through the computer-side control system; S3, the servo motor starts to drive the linear guide rod and the linear module, the linear module drives the high-speed screw to move, the high-speed screw drives the mounting plate, the slider and the cylinder to slide back and forth along the slide rail, the tested experimental wheel moves along a predetermined path, the loading pressure data is calculated by air pressure, the loading pressure data is monitored and recorded by the pressure sensor, and a test is completed; S4, continue to adjust the speed, time and stroke length and conduct the next test.

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