A road base disease detection device and method based on impact imaging method

Abstract

The present invention discloses a road base disease detection device and method based on the impact imaging method, including a base plate, a fixed cover above the base plate is provided with a shell, and a cross-shaped lifting rod is provided on the inner side of the shell, and the four ends of the lifting rod are respectively passed through the four sides of the shell and arranged on the outer side, and the four sides of the shell are provided with vertical openings that cooperate with the lifting rod. The lifting rod is driven down by a screw rod so that the elastic telescopic rod and the vibration sensor are lowered and contact the ground, and under the elastic tightening of the elastic telescopic rod, multiple vibration sensors can be in close contact with the ground to achieve better vibration data collection, thereby ensuring the accuracy of roadbed data detection, and at the same time, the air tank is inflated by an air pump and the air pressure is detected by a barometer, and the impact force of the impact mechanism is adjusted and controlled according to the air pressure in the air tank, thereby ensuring the accuracy of the adjustment of the impact force.

Description

Technical Field

[0001] The present invention relates to the technical field of road base detection using an impact imaging method, and in particular to a road base disease detection device and method based on the impact imaging method. Background Art

[0002] The impact imaging method applies a tiny instantaneous impact on the surface of the structure to generate stress waves inside the structure. The stress waves will be reflected and refracted at interfaces, cracks, voids and other locations, causing tiny response waveforms on the surface of the structure. After the response waveforms are received and processed by the sensor, the defect location, geometric shape, etc. can be accurately determined based on information such as wavelength, response energy, and average amplitude. Therefore, the impact imaging method is often used to detect roadbed defects when inspecting road base to ensure the quality of road construction.

[0003] The applicant of the present invention has found that the existing road detection device using the impact imaging method cannot detect the road due to the uneven road surface, which causes multiple vibration sensors to be unable to fit tightly with the road surface, resulting in the inability to receive some vibration wave data, affecting the accuracy of the detection data. At the same time, it is inconvenient to adjust and control the impact force when hitting the ground. Summary of the invention

[0004] The purpose of the present invention is to provide a road base disease detection device and method based on the impact imaging method, aiming to improve the problems of inaccurate detection data and inconvenient control of impact force adjustment of existing road detection devices using the impact imaging method.

[0005] The present invention is achieved in that:

[0006] A road base disease detection device based on impact imaging method comprises a bottom plate, a fixed cover above the bottom plate is provided with a shell, and a cross-shaped lifting rod is arranged on the inner side of the shell, the four ends of the lifting rod pass through the four side surfaces of the shell and are arranged on the outer side respectively, and the four side surfaces of the shell are provided with vertical clearance openings matched with the lifting rod, the four ends of the lifting rod are fixedly provided with elastic telescopic rods pointing vertically downward, and the lower end of the elastic telescopic rod is fixedly provided with a vibration sensor, the upper end surface of the bottom plate is fixedly provided with a plurality of guide rods vertically passing through the lifting rod, and the center of the lower end surface of the bottom plate is provided with an impact mechanism, the center of the upper end surface of the shell is vertically inserted with a rotatable screw, and the lower end of the screw is screwed through the lifting rod. At the center of the rod, an air tank is arranged near the left side of the upper end surface of the shell, and the left side of the air tank is connected to an air pump through a pipeline, and the other side of the air tank is connected to the impact mechanism through a pipeline, and a pressure gauge is arranged on the air tank. The lifting rod is driven down by the arranged screw to make the elastic telescopic rod and the vibration sensor descend and contact the ground, and under the elastic tightening of the elastic telescopic rod, multiple vibration sensors can be in close contact with the ground to achieve better vibration data collection, thereby ensuring the accuracy of roadbed data detection. At the same time, the air tank is inflated by the air pump and the air pressure is detected by the pressure gauge. The impact force of the impact mechanism is adjusted and controlled according to the air pressure in the air tank, thereby ensuring the accuracy of the adjustment of the impact force.

[0007] Furthermore, the impact mechanism includes a cylinder, a strike rod is inserted into the lower port of the cylinder, and a return spring is sleeved on the inner side of the strike rod located on the cylinder, a piston is fixedly provided on the end of the strike rod located on the inner side of the cylinder, and an exhaust valve and a control valve are respectively connected to the left and right sides of the cylinder near the upper end through pipes, one end of the control valve is connected to the pipe on the gas storage tank, and the control valve is opened to allow high-pressure gas to enter the cylinder to push out the piston and the impact rod to achieve impact, and the exhaust is discharged through the exhaust valve and the impact rod is rebounded under the action of the return spring.

[0008] Furthermore, the elastic telescopic rod includes a guide sleeve, a push rod is inserted into the lower end of the guide sleeve, and a tightening spring is arranged on the inner side of the guide sleeve at the upper end of the push rod, and the vibration sensor is elastically tightened by tightening the push rod with the tightening spring.

[0009] Furthermore, a mainframe case is fixedly arranged on the upper end surface of the shell near the right side, and a U-shaped pull rod is arranged on the right end surface of the shell, and the detection device can be moved by pulling the pull rod.

[0010] Furthermore, a display screen is provided on the main box, and a battery is provided inside the main box. The detection data is displayed through the display screen, and power is supplied through the battery.

[0011] Furthermore, the main box is connected to the air pump, the vibration sensor, the exhaust valve and the control valve through cables respectively, and the air pump, the vibration sensor, the exhaust valve and the control valve are controlled by the main box to work.

[0012] Furthermore, a gear is provided on the upper end fixing sleeve of the screw rod, and the gear is meshed with the driving gear on the motor output shaft. The motor is fixed on the upper end surface of the shell, and the motor is connected to the main box through a cable. The motor drives the gear to drive the screw rod to rotate to realize the lifting and lowering control of the lifting rod.

[0013] Furthermore, a clamping edge for clamping with the shell is arranged on the upper surface of the bottom plate, and a roller leg is arranged on the lower end surface of the bottom plate, so that the shell can be clamped externally by the clamping edge, and the movement can be achieved by the roller leg.

[0014] A road base disease detection method based on impact imaging method comprises the following steps:

[0015] S1: Clean the floating dust layer on the surface of the roadbed to be tested;

[0016] S2: The detection device is moved to the detection position by pulling the pull rod, and the lifting rod is driven down by controlling the motor to drive the screw rod so that the vibration sensor on the elastic telescopic rod is pressed against the ground;

[0017] S3: Inflate and pressurize the gas tank by controlling the air pump, so that the air pressure gauge on the gas tank reaches a certain pressure value;

[0018] S4: By controlling the opening of the control valve, the gas storage tank delivers high-pressure gas to the cylinder to drive the impact rod to impact the ground, and the vibration sensor receives the vibration wave and transmits it to the main box for data collection and analysis;

[0019] S5: Close the control valve, then open the exhaust valve to exhaust air so that the impact rod rises and resets, and control the lifting rod to rise, and then move to the next detection location for detection.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In the present invention, the screw rod is arranged to drive the lifting rod to descend so that the elastic telescopic rod and the vibration sensor descend and contact the ground, and under the elastic tightening of the elastic telescopic rod, multiple vibration sensors can all be in close contact with the ground to achieve better vibration data collection, thereby ensuring the accuracy of roadbed data detection. At the same time, the air tank is inflated by an air pump and the air pressure is detected by a pressure gauge. The impact force of the impact mechanism is adjusted and controlled by controlling the air pressure in the air tank, thereby ensuring the accuracy of the adjustment of the impact force. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a front view of a road base disease detection device based on the impact imaging method of the present invention;

[0024] Figure 2 is a cross-sectional view of a road base disease detection device based on the impact imaging method shown in the present invention;

[0025] Figure 3 It is a schematic diagram of a telescopic rod of a road base disease detection device based on an impact imaging method shown in the present invention;

[0026] Figure 4 It is a schematic diagram of an impact mechanism of a road base disease detection device based on an impact imaging method shown in the present invention;

[0027] Figure 5 It is a schematic diagram of the bottom plate of a road base disease detection device based on the impact imaging method shown in the present invention.

[0028] In the figure: 1. air pump; 2. shell; 3. lifting rod; 4. elastic telescopic rod; 41. guide sleeve; 42. push rod; 43. tightening spring; 5. vibration sensor; 6. gas tank; 7. main box; 8. bottom plate; 81. clamping edge; 82. roller leg; 9. impact mechanism; 91. exhaust valve; 92. cylinder; 93. control valve; 94. piston; 95. reset spring; 96. impact rod; 10. screw; 11. guide rod; 12. pull rod. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Example 1, please refer to Figure 1 and Figure 2 As shown, a road base disease detection device based on the impact imaging method includes a bottom plate 8, a housing 2 is fixedly provided above the bottom plate 8, and a cross-shaped lifting rod 3 is provided on the inner side of the housing 2, and the four ends of the lifting rod 3 pass through the four side surfaces of the housing 2 and are arranged on the outer side, and the four side surfaces of the housing 2 are all provided with vertical openings for making way for the lifting rod 3, the four ends of the lifting rod 3 are fixedly provided with elastic telescopic rods 4 pointing vertically downward, and the lower end of the elastic telescopic rod 4 is fixedly provided with a vibration sensor 5, and the upper end surface of the bottom plate 8 is fixedly provided with a plurality of guide rods that vertically pass through the lifting rod 3. A rotatable screw rod 10 is vertically inserted through the center of the upper end surface of the housing 2, and the lower end of the screw rod 10 is screwed through the center of the lifting rod 3. A gas storage tank 6 is arranged near the left side of the upper end surface of the housing 2, and the left side of the gas storage tank 6 is connected to the air pump 1 through a pipeline, and the other side of the gas storage tank 6 is connected to the impact mechanism 9 through a pipeline, and a barometer is arranged on the gas storage tank 6. The lifting rod 3 is driven down by the arranged screw rod 10 so that the elastic telescopic rod 4 and the vibration sensor 5 are lowered and contacted with the ground, and the elastic top of the elastic telescopic rod 4 is tightened. The multiple vibration sensors 5 can be in close contact with the ground to achieve better vibration data collection and ensure the accuracy of roadbed data detection. At the same time, the air tank 6 is inflated by the air pump 1 and the air pressure is detected by the barometer. The impact force of the impact mechanism 9 is adjusted and controlled according to the air pressure in the air tank 6 to ensure the accuracy of the adjustment of the impact force. The upper end face of the shell 2 is fixedly provided with a main box 7 near the right side, and the right end face of the shell 2 is provided with a U-shaped pull rod 12. The detection device is moved by pulling the pull rod 12. A display screen is provided on the main box 7, and the inner side of the main box 7 A battery is provided, and the detection data is displayed on a display screen, and power is supplied by the battery. The main box 7 is connected to the air pump 1, the vibration sensor 5, the exhaust valve 91 and the control valve 93 through cables respectively, and the air pump 1, the vibration sensor 5, the exhaust valve 91 and the control valve 93 are controlled by the main box 7 to work. The upper end of the screw rod 10 is fixedly sleeved with a gear, and the gear is meshed with the driving gear on the motor output shaft. The motor is fixed on the upper end surface of the outer shell 2, and the motor is connected to the main box 7 through a cable. The motor drives the gear to drive the screw rod 10 to rotate to realize the lifting and lowering control of the lifting rod 3.

[0031] Please refer to Figure 3As shown, the impact mechanism 9 includes a cylinder 92, a striker rod 96 is inserted into the lower port of the cylinder 92, and the striker rod 96 is located on the inner side of the cylinder 92 and is sleeved with a return spring 95, and a piston 94 is fixedly provided at the end of the striker rod 96 located on the inner side of the cylinder 92, and an exhaust valve 91 and a control valve 93 are respectively connected to the upper end of the cylinder 92 on the left and right sides through pipelines, and one end of the control valve 93 is connected to the pipeline on the gas storage tank 6, and the control valve 93 is opened to allow high-pressure gas to enter the cylinder 92 to push out the piston 94 and the impact rod 96 to realize the impact, and the exhaust is carried out through the exhaust valve 91 and the impact rod 96 is rebounded under the action of the return spring 95.

[0032] Please refer to Figure 4 As shown, the elastic telescopic rod 4 includes a guide sleeve 41, a push rod 42 is inserted into the lower end of the guide sleeve 41, and a tensioning spring 43 is provided on the inner side of the guide sleeve 41 at the upper end of the push rod 42, and the tensioning spring 43 presses the push rod 42 to realize elastic tensioning of the vibration sensor 5.

[0033] Please refer to Figure 5 As shown, the upper surface of the base plate 8 is provided with a clamping edge 81 clamped with the shell 2, and the lower end surface of the base plate 8 is provided with a roller leg 82, the outer clamping of the shell 2 is achieved by the clamping edge 81, and the movement is achieved by the roller leg 82.

[0034] A road base disease detection method based on impact imaging method comprises the following steps:

[0035] S1: Clean the floating dust layer on the surface of the roadbed to be tested;

[0036] S2: The detection device is pulled by the pull rod 12 to move it to the detection position, and the lifting rod 3 is driven downward by controlling the motor to drive the screw rod 10 so that the vibration sensor 5 on the elastic telescopic rod 4 is pressed against the ground;

[0037] S3: Controlling the air pump 1 to inflate and pressurize the air storage tank 6 so that the air pressure gauge on the air storage tank 6 reaches a certain air pressure value;

[0038] S4: by controlling the opening of the control valve 93, the gas storage tank 6 delivers high-pressure gas to the cylinder 92 to drive the impact rod 96 to impact the ground, and the vibration sensor 5 receives the vibration wave and transmits it to the main box 7 for data collection and analysis;

[0039] S5: Close the control valve 93, then open the exhaust valve 91 to exhaust air so that the impact rod 96 rises and resets, and control the lifting rod 3 to rise, and then move to the next detection location for detection.

[0040] Working principle: The main engine controls the motor to drive the screw 10 to rotate and drive the lifting rod 3 to descend so that the vibration sensor 5 on the elastic telescopic rod 4 is pressed against the ground. The air pump 1 is controlled to inflate and pressurize the air tank 6 so that the air pressure gauge on the air tank 6 reaches a certain air pressure value. The control valve 93 is opened by control so that the air tank 6 delivers high-pressure gas to the cylinder 92 to drive the impact rod 96 to impact the ground. The vibration sensor 5 receives the vibration wave and transmits it to the main engine box 7 for data collection and analysis. The control valve 93 is closed and the exhaust valve 91 is opened for exhaust so that the impact rod 96 rises and resets under the drive of the reset spring 95.

[0041] The device obtained through the above design can basically meet the existing road detection device using the impact imaging method to detect accurate data and conveniently adjust and control the impact force. However, in order to further improve its functions, the designer has further improved the device.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A road base disease detection device based on impact imaging method, comprising a base plate (8), characterized in that: A shell (2) is fixedly provided above the bottom plate (8), and a cross-shaped lifting rod (3) is provided on the inner side of the shell (2). The four ends of the lifting rod (3) pass through the four side surfaces of the shell (2) and are provided on the outer side respectively, and the four side surfaces of the shell (2) are provided with vertical openings for making way for the lifting rod (3). The four ends of the lifting rod (3) are fixedly provided with elastic telescopic rods (4) pointing vertically downward, and the lower end of the elastic telescopic rod (4) is fixedly provided with a vibration sensor (5). The upper end surface of the bottom plate (8) is fixedly provided with a plurality of guide rods (11) vertically passing through the lifting rod (3), and the center of the lower end surface of the bottom plate (8) is provided with an impact mechanism (9). A rotatable screw (10) is vertically inserted through the center of the upper end surface of the shell (2), and the lower end of the screw (10) is screwed through the center of the lifting rod (3). The upper end surface of the shell (2) is provided with a An air storage tank (6) is arranged, and the left side of the air storage tank (6) is connected to an air pump (1) through a pipeline, and the other side of the air storage tank (6) is connected to an impact mechanism (9) through a pipeline, and a pressure gauge is arranged on the air storage tank (6); the impact mechanism (9) comprises a cylinder (92), a lower end of the cylinder (92) is inserted with an impact rod (96), and the impact rod (96) is located inside the cylinder (92) and is sleeved with a return spring (95), and a piston (94) is fixedly arranged at the end of the impact rod (96) located inside the cylinder (92), and the left and right sides of the cylinder (92) near the upper end are respectively connected to an exhaust valve (91) and a control valve (93) through pipelines, and one end of the control valve (93) is connected to the pipeline on the air storage tank (6); the upper surface of the bottom plate (8) is provided with a clamping edge (81) clamped with the outer shell (2), and the lower end surface of the bottom plate (8) is provided with a roller support leg (82).

2. The road base disease detection device based on the impact imaging method according to claim 1 is characterized in that: The elastic telescopic rod (4) comprises a guide sleeve (41), a push rod (42) is inserted into the lower end of the guide sleeve (41), and a tightening spring (43) is provided on the inner side of the guide sleeve (41) at the upper end of the push rod (42).

3. The road base disease detection device based on the impact imaging method according to claim 2 is characterized in that: A mainframe case (7) is fixedly arranged on the upper end surface of the shell (2) near the right side, and a U-shaped pull rod (12) is arranged on the right end surface of the shell (2).

4. The road base disease detection device based on the impact imaging method according to claim 3 is characterized in that: The main box (7) is provided with a display screen, and a storage battery is provided inside the main box (7).

5. The road base disease detection device based on the impact imaging method according to claim 4 is characterized in that: The main box (7) is connected to the air pump (1), the vibration sensor (5), the exhaust valve (91) and the control valve (93) respectively through cables.

6. The road base disease detection device based on the impact imaging method according to claim 5 is characterized in that: The upper end of the screw rod (10) is fixedly sleeved with a gear, and the gear meshes with a driving gear on the output shaft of the motor. The motor is fixed to the upper end surface of the housing (2), and the motor is connected to the main box (7) via a cable.

7. A road base disease detection method based on impact imaging method, characterized in that: The detection is performed using the road base disease detection device based on the impact imaging method as described in any one of claims 1 to 6, comprising the following steps: S1: Clean the floating dust layer on the surface of the roadbed to be tested; S2: The detection device is moved to the detection position by pulling the pull rod, and the lifting rod is driven downward by controlling the motor to drive the screw rod so that the vibration sensor on the elastic telescopic rod is pressed against the ground; S3: Inflate and pressurize the air tank by controlling the air pump so that the air pressure gauge on the air tank reaches the moving air pressure value; S4: By controlling the opening of the control valve, the gas storage tank delivers high-pressure gas to the cylinder to drive the impact rod to impact the ground, and the vibration sensor receives the vibration wave and transmits it to the main box for data collection and analysis; S5: Close the control valve, then open the exhaust valve to exhaust air so that the impact rod rises and resets, and control the lifting rod to rise, and then move to the next detection location for detection.

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