Highway bridge tunnel crack depth measuring instrument

Abstract

The utility model discloses a highway bridge tunnel crack depth measuring instrument, which belongs to the technical field of crack depth measuring instruments and comprises a host, the outer wall of the host is fixedly connected with a display screen used for displaying various measured parameters and processing data, and the lower end of the host is fixedly provided with an operation interface. The outer wall of the end, away from the display screen, of the host is movably connected with a distance adjusting ruler used for adjusting the measuring distance, and the outer wall of the distance adjusting ruler is slidably connected with two transducers which are used for making contact with a bridge and obtaining the crack depth of the bridge through an ultrasonic measuring method. When the device encounters a crack, the phenomena of reflection, refraction, diffraction and the like are generated on a crack interface, and measured data are transmitted to a built-in calculation system of the device through an elastic cable, so that the depth of the crack is calculated through parameters such as propagation time and amplitude of ultrasonic waves on two sides of the crack.

Description

Technical Field

[0001] The utility model relates to the technical field of crack depth measuring instruments, in particular to a highway bridge and tunnel crack depth measuring instrument. Background Art

[0002] With the rapid development of my country's highway transportation network, highway bridges and tunnels, as key components of transportation hubs, have continued to increase in number. Under the influence of multiple factors such as long-term natural environment erosion, heavy traffic loads, and complex and changeable geological conditions, highway bridge and tunnel structures will inevitably suffer from various diseases, among which cracks are particularly prominent. The appearance of cracks not only affects the appearance of the structure, but more importantly, it may indicate a change in the internal stress state of the structure. It is a key manifestation of reduced structural bearing capacity and damaged durability. Accurately grasping the crack depth information is of immeasurable value for scientifically evaluating the safety status of highway bridges and tunnels and rationally formulating maintenance and reinforcement strategies.

[0003] A Chinese patent discloses a highway bridge tunnel crack depth measuring instrument (authorization announcement number CN 216081363U), including a crack depth meter, the crack depth meter is externally provided with an auxiliary measuring mechanism, the auxiliary measuring mechanism includes two side plates, a positive and negative thread electric screw and a guide rod are rotatably connected between the two side plates, the positive and negative thread electric screw output shaft is externally threaded with two screw nuts, and the guide rod is externally connected with two slide plates.

[0004] This patent sets up an auxiliary measuring mechanism so that after one alignment is completed, there is no need to frequently remove the transducer for adjustment, thereby reducing the adjustment workload. However, during use, this patent requires additional side plates for adjusting the spacing. Before use, the side plates need to be fixed on the measuring surface and the transducer needs to be installed on it before subsequent measurement work can be carried out. The operation is very cumbersome, and the side plates need to be removed separately after use, which is inconvenient to carry and transport the device. Therefore, the utility model provides a highway bridge and tunnel crack depth measuring instrument to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a highway bridge tunnel crack depth measuring instrument to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A crack depth measuring instrument for highway bridges and tunnels, comprising a main body. A display screen for displaying various measurement parameters and processing data is fixedly connected to the outer wall of the main body. An operation interface is fixedly installed at the lower end of the main body. A distance adjusting ruler for adjusting the measurement distance is movably connected to the outer wall of the main body at one end away from the display screen. Two transducers for contacting the bridge and using the ultrasonic measurement method to obtain the crack depth of the bridge are slidably connected to the outer wall of the distance adjusting ruler.

[0008] As a further solution of the present utility model, a grip for convenient holding and operating the device is fixedly installed at the lower end of the operation interface.

[0009] As a further solution of the present utility model, an activity groove is provided on the outer wall of the main body at one end away from the display screen. An adjusting component for extending and retracting the distance adjusting ruler is installed inside the activity groove. An elastic cable for connecting the distance adjusting ruler and the transducer to achieve signal transmission and power supply is installed between the distance adjusting ruler and the transducer.

[0010] As a further solution of the present utility model, two sliding blocks are slidably connected to the outer wall of the distance adjusting ruler. The two sliding blocks are respectively fixedly connected to one end of the elastic cable away from the transducer.

[0011] As a further solution of the present utility model, the adjusting component includes a driving member. A first robotic arm is fixedly connected to the outer wall of the driving member. A second robotic arm is rotatably connected to one end of the first robotic arm away from the driving member. The second robotic arm is rotatably connected to the outer wall of the distance adjusting ruler at one end away from the first robotic arm.

[0012] As a further solution of the present utility model, the transducer includes a connecting block. One end of the connecting block is fixedly connected to the elastic cable. A ferrule is fixedly connected to one end of the connecting block away from the elastic cable. A probe is fixedly connected to one end of the ferrule away from the connecting block. A cooperation spring is installed inside the ferrule.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. When the present utility model is used, by stretching the elastic cable to an appropriate length, applying a coupling agent to the outer wall of the probe and then fitting it to the contact surface to be measured, and utilizing the propagation characteristics of ultrasonic waves in media such as concrete, when it encounters a crack, reflection, refraction, diffraction and other phenomena will occur at the crack interface, and the cooperation spring will be driven to vibrate at a specific frequency, so that the outer wall of the probe always closely fits the contact surface, thereby improving the accuracy of the data. Then, the elastic cable will receive various signals of the cooperation probe vibration and transmit them to the built-in calculation system of the device, so as to calculate the depth of the crack through parameters such as the propagation time and wave amplitude of ultrasonic waves on both sides of the crack.

[0015] 2. When the present utility model is in use, the driving motor inside the adjustment groove drives the driving member to rotate, simultaneously drives the first robotic arm and the second robotic arm to move, thereby driving the distance adjustment ruler to slide along the movable groove, realizing the function that the distance adjustment ruler can be retracted into the movable groove for convenient storage and carrying, and extended outside the movable groove for convenient measurement use. At the same time, the positions of the two sliding blocks can also be adjusted by sliding, so as to adjust the distance between the two transducers, enabling the two transducers to always closely fit on both sides of the measured crack when facing cracks of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a crack depth measuring instrument for highway bridges and tunnels.

[0017] Figure 2 It is a schematic structural diagram of another perspective of a crack depth measuring instrument for highway bridges and tunnels.

[0018] Figure 3 It is a schematic structural diagram of the main body of a crack depth measuring instrument for highway bridges and tunnels.

[0019] Figure 4 It is a schematic structural diagram of the distance adjustment ruler of a crack depth measuring instrument for highway bridges and tunnels.

[0020] Figure 5 It is a schematic structural diagram of the adjustment device of a crack depth measuring instrument for highway bridges and tunnels.

[0021] Figure 6 It is an exploded view of the transducer of a crack depth measuring instrument for highway bridges and tunnels.

[0022] In the figure: 1. Main body; 2. Display screen; 3. Operation interface; 4. Grip; 5. Movable groove; 6. Transducer; 601. Connecting block; 602. Ferrule; 603. Cooperative spring; 604. Probe; 7. Distance adjustment ruler; 8. Adjustment groove; 9. Adjustment component; 901. Driving member; 902. First robotic arm; 903. Second robotic arm; 904. Connecting piece; 10. Sliding block; 11. Sliding track; 12. Elastic cable; 13. Scale line. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer toFigures 1 to 6 In the embodiment of the present utility model, a crack depth measuring instrument for highway bridge tunnels includes a main unit 1. A display screen 2 for displaying various measurement parameters and processing data is fixedly connected to the outer wall of the main unit 1. An operation interface 3 is fixedly installed at the lower end of the main unit 1. Specifically, a plurality of operation buttons for controlling the device are arranged on the outer wall of the operation interface 3. A distance adjustment ruler 7 for adjusting the measurement distance is movably connected to the outer wall of the main unit 1 at one end away from the display screen 2. Two transducers 6 for contacting the bridge and obtaining the crack depth of the bridge by ultrasonic measurement method are slidably connected to the outer wall of the distance adjustment ruler 7;

[0025] In order to facilitate the staff to hold and operate the device during measurement, a grip 4 for convenient holding and operating the device is fixedly installed at the lower end of the operation interface 3;

[0026] Please refer to Figures 3 to 4 In order to facilitate the storage of the device when it is not in use, it is necessary to reduce its occupied space during idle time, so as to facilitate the carrying of the device and subsequent use. An activity slot 5 is opened on the outer wall of the main unit 1 at one end away from the display screen 2. The distance adjustment ruler 7 is movably connected to the activity slot 5. Specifically, an adjustment component 9 for extending and retracting the distance adjustment ruler 7 is installed inside the activity slot 5. More specifically, an adjustment groove 8 is opened on the inner wall of the activity slot 5. The adjustment component 9 is movably connected inside the adjustment groove 8; A elastic cable 12 for connecting the distance adjustment ruler 7 and the transducer 6 to achieve signal transmission and power supply is installed between the distance adjustment ruler 7 and the transducer 6;

[0027] In order to be able to adjust the distance between the two transducers 6 so that they can always be closely attached to both sides of the measured crack when facing cracks of different widths, two sliding blocks 10 are slidably connected to the outer wall of the distance adjustment ruler 7. Specifically, the two sliding blocks 10 are respectively fixedly connected to one end of the elastic cable 12 away from the transducer 6. More specifically, a sliding track 11 is opened in the middle of the distance adjustment ruler 7. The two sliding blocks 10 are respectively located at the sliding track 11. By sliding to adjust the positions of the two sliding blocks 10, the distance between the two transducers 6 is adjusted. Scale lines 13 for conveniently and accurately positioning the two sliding blocks 10 are opened on the outer wall of the distance adjustment ruler 7;

[0028] Please refer to Figure 5, the adjusting assembly 9 includes a driving member 901. Specifically, the driving member 901 is rotatably connected to the inner wall of the adjusting groove 8. A driving motor is built into the adjusting groove 8, and the output end of the driving motor is fixedly connected to the outer wall of the driving member 901. A first robotic arm 902 is fixedly connected to the outer wall of the driving member 901. One end of the first robotic arm 902 away from the driving member 901 is rotatably connected to a second robotic arm 903. One end of the second robotic arm 903 away from the first robotic arm 902 is rotatably connected to the outer wall of the distance adjusting ruler 7. Specifically, a connecting member 904 is fixedly connected to one end of the distance adjusting ruler 7 close to the movable groove 5. One end of the second robotic arm 903 away from the first robotic arm 902 is rotatably connected to the connecting member 904. The driving motor inside the adjusting groove 8 drives the driving member 901 to rotate, thereby driving the first robotic arm 902 to perform a circular motion along the driving member 901, and at the same time driving the second robotic arm 903 to move. The second robotic arm 903 then drives the distance adjusting ruler 7 to slide along the movable groove 5, realizing the function that the distance adjusting ruler 7 can be retracted into the movable groove 5 for convenient storage and carrying, and extended outside the movable groove 5 for convenient measurement and use;

[0029] Please refer to Figure 6 , the transducer 6 includes a connecting block 601. One end of the connecting block 601 is fixedly connected to the elastic cable 12. One end of the connecting block 601 away from the elastic cable 12 is fixedly connected to a ferrule 602. One end of the ferrule 602 away from the connecting block 601 is fixedly connected to a probe 604. A cooperative spring 603 is installed inside the ferrule 602. Both ends of the cooperative spring 603 are respectively connected to the mutually close ends of the ferrule 602 and the probe 604. When in use, the connecting block 601 is pulled outwards and the elastic cable 12 is stretched to an appropriate length, and a coupling agent is applied to the outer wall of the probe 604 to reduce the gap between the probe 604 and the contact surface, making the measured data more accurate. The probe 604 emits high-intensity ultrasonic waves. Utilizing the propagation characteristics of ultrasonic waves in media such as concrete, when it encounters a crack, reflection, refraction, diffraction and other phenomena will occur at the crack interface, and drive the cooperative spring 603 to vibrate at a specific frequency, so that the outer wall of the probe 604 is always in close contact with the contact surface, thereby improving the accuracy of the data. Then the elastic cable 12 will receive various signals of the vibration of the cooperative probe 604 and transmit them to the built-in calculation system of the device, so as to calculate the depth of the crack through parameters such as the propagation time and wave amplitude of the ultrasonic waves on both sides of the crack.

[0030] The working principle of the present utility model is:

[0031] When the utility model is in use, the connecting block 601 is pulled outwards to stretch the elastic cable 12 to an appropriate length, and a coupling agent is applied to the outer wall of the probe 604 to reduce the gap between the probe 604 and the contact surface, making the measured data more accurate. The probe 604 emits high-intensity ultrasonic waves. Utilizing the propagation characteristics of ultrasonic waves in media such as concrete, when it encounters a crack, reflection, refraction, diffraction and other phenomena will occur at the crack interface, and the cooperative spring 603 will be driven to vibrate at a specific frequency, making the outer wall of the probe 604 always closely fit the contact surface, thereby improving the accuracy of the data. Then, the elastic cable 12 will receive various signals of the vibration of the cooperative probe 604 and transmit them to the built-in calculation system of the device, and thus calculate the depth of the crack through parameters such as the propagation time and wave amplitude of ultrasonic waves on both sides of the crack;

[0032] The driving motor inside the adjustment groove 8 is adjusted to drive the driving member 901 to rotate, thereby driving the first robotic arm 902 to perform a circular motion along the driving member 901, and at the same time driving the second robotic arm 903 to move. The second robotic arm 903 thus drives the distance adjustment ruler 7 to slide along the movable groove 5, realizing the function that the distance adjustment ruler 7 can be retracted into the movable groove 5 for convenient storage and carrying and extended outside the movable groove 5 for convenient measurement use. At the same time, the positions of the two sliding blocks 10 can also be adjusted by sliding, so as to adjust the distance between the two transducers 6, so that when facing cracks of different widths, the two transducers 6 can always closely fit on both sides of the measured crack.

[0033] The above is only the preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the utility model, according to the technical solution of the utility model and its inventive concept, makes equivalent replacements or changes, and should be covered within the protection scope of the utility model.

Claims

1. A highway bridge tunnel crack depth measuring instrument, comprising a main unit (1), characterized in that: A display screen (2) for displaying various measured parameters and processing data is fixedly connected to the outer wall of the host (1); an operation interface (3) is fixedly installed at the lower end of the host (1); an adjustable distance ruler (7) for adjusting the measurement distance is movably connected to the outer wall of the host (1) at one end away from the display screen (2); two transducers (6) for contacting the bridge and obtaining the depth of the cracks in the bridge by using an ultrasonic measurement method are slidably connected to the outer wall of the adjustable distance ruler (7).

2. A highway bridge tunnel crack depth measuring instrument according to claim 1, characterized in that: A handle (4) is fixedly mounted at the lower end of the operation interface (3) for convenient holding and operating the device.

3. A highway bridge tunnel crack depth measuring instrument according to claim 1, characterized in that: An active groove (5) is provided on an outer wall of one end of the main unit (1) away from the display screen (2); an adjusting component (9) for extending and retracting the adjustable ruler (7) is installed inside the active groove (5); and an elastic cable (12) for connecting the adjustable ruler (7) and the transducer (6) to achieve signal transmission and power supply is installed between the adjustable ruler (7) and the transducer (6).

4. A highway bridge tunnel crack depth measuring instrument according to claim 1, characterized in that: Two sliding blocks (10) are slidably connected to the outer wall of the distance adjusting ruler (7), and the two sliding blocks (10) are respectively fixedly connected to one end of the elastic cable (12) away from the transducer (6).

5. A highway bridge tunnel crack depth measuring instrument according to claim 3, characterized in that: The adjustment assembly (9) comprises a driving member (901), a first mechanical arm (902) being fixedly connected to an outer wall of the driving member (901), an end of the first mechanical arm (902) away from the driving member (901) being rotatably connected to a second mechanical arm (903), and an end of the second mechanical arm (903) away from the first mechanical arm (902) being rotatably connected to an outer wall of the distance adjustment ruler (7).

6. A highway bridge tunnel crack depth measuring instrument according to claim 1, characterized in that: The transducer (6) comprises a connecting block (601), one end of the connecting block (601) is fixedly connected to the elastic cable (12), one end of the connecting block (601) away from the elastic cable (12) is fixedly connected to a ferrule (602), one end of the ferrule (602) away from the connecting block (601) is fixedly connected to a probe (604), and a cooperative spring (603) is installed inside the ferrule (602).

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