Device for automatically and ultrasonically detecting internal defects of tunnel concrete lining

Abstract

The utility model provides a device for automatically and ultrasonically detecting internal defects of a tunnel concrete lining, and belongs to the field of tunnel structure detection. The utility model aims to solve the problems that the traditional ultrasonic detection method is low in detection efficiency and cannot realize automatic detection. The device comprises an ultrasonic trolley, a mobile platform, an ultrasonic probe array and a supporting device, the supporting device comprises a first movable joint, a first electric push rod, a second movable joint and a supporting arm; the supporting arm is vertically fixed on the mobile platform, the other end is connected with the first electric push rod through the second movable joint, and the first electric push rod is connected with the ultrasonic trolley through the first movable joint; an ultrasonic probe array is arranged in the ultrasonic trolley; the ultrasonic probe array is connected with the clamping plate through a spring, and a first pressure sensor is arranged between the ultrasonic probe array and the clamping plate; the bottom of the clamping plate is connected with second electric push rods. By adopting an automatic control mode, the detection efficiency is effectively improved, and the detection cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel structure detection field especially relates to a kind of automatic ultrasonic detection tunnel concrete lining internal defect device. BACKGROUND

[0002] With the continuous development of tunnel engineering construction, tunnel lining as the important structural part of tunnel, its quality directly affects the safety and durability of tunnel. The traditional tunnel lining detection method mainly relies on artificial inspection or fixed detection equipment, and these methods have problems such as high labor cost, low detection efficiency and limited detection range. With the development of automation technology, using automatic detection system to detect tunnel lining becomes an effective way to improve the efficiency and accuracy of tunnel quality detection.

[0003] At present, ultrasonic detection technology has been widely used in concrete structure defect detection. By using ultrasonic probe, the defects such as cavity and crack in the interior of concrete can be effectively detected. However, the traditional ultrasonic detection method usually relies on manual adjustment of probe position, which leads to low detection efficiency and cannot realize automatic detection.

[0004] In view of the above shortcomings and problems, an automatic ultrasonic detection tunnel concrete lining internal defect device is designed to realize real-time and accurate automatic detection of tunnel lining defects, so as to reduce the labor intensity of workers and improve the detection efficiency. SUMMARY

[0005] In the following, a brief summary of the utility model is given to provide a basic understanding of some aspects of the utility model. It should be understood that this summary is not an exhaustive summary of the utility model. It is not intended to determine the key or important parts of the utility model, nor to limit the scope of the utility model. Its purpose is only to give some concepts in a simplified form as a prelude to the more detailed description discussed later.

[0006] In view of this, in order to solve the problem of low detection efficiency and inability to realize automatic detection of traditional ultrasonic detection method, the utility model provides an automatic ultrasonic detection tunnel concrete lining internal defect device.

[0007] The utility model technical scheme is an automatic ultrasonic detection tunnel concrete lining internal defect device, which comprises an ultrasonic vehicle, a moving platform and a supporting device.

[0008] The supporting device comprises a first movable joint, a first electric push rod, a second movable joint and a supporting arm. The supporting arm is vertically fixed on the moving platform, and the other end of the supporting arm is connected with the first electric push rod through the second movable joint. The output end of the first electric push rod is fixedly connected with the bottom of the ultrasonic vehicle through the first movable joint.

[0009] The ultrasonic trolley is internally provided with an ultrasonic probe array, a spring, a first pressure sensor and a second electric push rod, the bottom end of the ultrasonic probe array is connected with the clamping plate through the spring, and the first pressure sensor is arranged between the ultrasonic probe array and the clamping plate; the bottom of the clamping plate is connected with the second electric push rod.

[0010] Further, the ultrasonic trolley is provided with ultrasonic trolley wheels at the top.

[0011] Further, a second pressure sensor is installed at the bearing position of the ultrasonic trolley wheel.

[0012] Further, the support arm is an electrically retractable structure.

[0013] Further, the first movable joint and the second movable joint can rotate by 180 degrees.

[0014] Further, the moving platform is provided with moving platform wheels at the bottom, and the moving platform wheels are connected with a moving platform motor.

[0015] Further, the first electric push rod, the support arm, the moving platform motor, the first pressure sensor, the second pressure sensor and the second electric push rod are electrically connected with an external controller.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The utility model discloses a device through the linkage design of ultrasonic trolley, pressure sensor and controller, makes ultrasonic probe trolley can adjust contact pressure in the tunnel lining surface detection process dynamically, ensures that ultrasonic probe array is always closely combined with tunnel lining surface, further improves the stability and accuracy of detection, reduces manual intervention and operation difficulty, greatly reduces the labor intensity of staff member;

[0018] 2. The utility model discloses a device realizes the flexible adjustment of detection device height and position, so that the ultrasonic probe can adapt to different tunnel lining shapes and complex geometric structures, improves the applicability of the device;

[0019] 3. The utility model discloses a device adopts automatic control mode, realizes the continuous detection of tunnel large -range lining, adopts array type ultrasonic probe to increase detection area, effectively promotes the detection efficiency, and reduces the detection cost. DRAWINGS

[0020] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the utility model, and the illustrative embodiment and the description thereof of the utility model are used to explain the utility model, and do not constitute improper limitation to the utility model. In the drawings:

[0021] Figure 1 It is a structural schematic view of an automatic ultrasonic device for detecting internal defects of tunnel concrete lining;

[0022] Figure 2 It is a front view of Figure 1 ;

[0023] Figure 3 It is a bottom view of Figure 2 ;

[0024] Figure 4 It is a sectional view of A in Figure 2 ;

[0025] In the figure: 1 - ultrasonic vehicle wheel, 2 - ultrasonic vehicle, 3 - first movable joint, 4 - first electric push rod, 5 - second movable joint, 6 - support arm, 7 - moving platform, 8 - moving platform wheel, 9 - moving platform motor, 10 - ultrasonic probe array, 11 - spring, 12 - first pressure sensor, 13 - second electric push rod. DETAILED DESCRIPTION

[0026] In order to make the technical scheme and advantages in the embodiments of the utility model clearer and more apparent, the exemplary embodiments of the utility model are further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than an exhaustive enumeration of all embodiments. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0027] Embodiment 1, refer to Figures 1-4 The utility model discloses an automatic ultrasonic device for detecting internal defects of tunnel concrete lining, which comprises an ultrasonic vehicle 2, a moving platform 7 and a supporting device.

[0028] The supporting device comprises a first movable joint 3, a first electric push rod 4, a second movable joint 5 and a support arm 6. The support arm 6 is vertically fixed on the moving platform 7, and the other end of the support arm 6 is connected with the first electric push rod 4 through the second movable joint 5. The output end of the first electric push rod 4 is fixedly connected with the bottom of the ultrasonic vehicle 2 through the first movable joint 3.

[0029] The ultrasonic vehicle 2 is internally provided with an ultrasonic probe array 10, a spring 11, a first pressure sensor 12 and a second electric push rod 13. The bottom end of the ultrasonic probe array 10 is connected with a clamping plate through the spring 11, and the first pressure sensor 12 is arranged between the ultrasonic probe array 10 and the clamping plate. The bottom of the clamping plate is connected with the second electric push rod 13.

[0030] Further, the ultrasonic car 2 is provided with an ultrasonic car wheel 1 on the top.

[0031] Further, a second pressure sensor is installed at the bearing position of the ultrasonic car wheel 1.

[0032] Further, the support arm 6 is an electric telescopic structure.

[0033] Further, the first movable joint 3 and the second movable joint 5 can rotate by 180 degrees.

[0034] Further, the moving platform 7 is provided with a moving platform wheel 8 at the bottom, and the moving platform wheel 8 is connected with a moving platform motor 9.

[0035] Further, the first electric push rod 4, the support arm 6, the moving platform motor 9, the first pressure sensor 12, the second pressure sensor and the second electric push rod 13 are electrically connected with an external controller.

[0036] The device utilizes ultrasonic waves to detect internal defects of tunnel concrete lining, and the specific method is as follows:

[0037] An external power supply connected with the device is turned on, the moving platform motor 9 is driven by an external control system to rotate the moving platform wheel 8, the device is moved to a suitable position, the height and angle of the ultrasonic car 2 are adjusted by the first movable joint 3, the first electric push rod 4, the second movable joint 5 and the support arm 6 to precisely fit the surface to be measured of the tunnel lining, and then the detection is started;

[0038] During the detection process, the ultrasonic probe array 10 is driven by the second electric push rod 13 to perform telescopic movement, so that the probe can effectively scan the internal defects of the tunnel lining; meanwhile, the second pressure sensor connected with the ultrasonic car wheel 1 can monitor the contact state between the ultrasonic car 2 and the surface to be measured of the tunnel lining, the telescopic state of the ultrasonic probe array 10 is adjusted in time through the external control system, and the ultrasonic probe array 10 is protected while better scanning the internal defects of the tunnel lining.

[0039] The device can dynamically adjust the contact pressure of the ultrasonic probe car during the detection process on the surface of the tunnel lining through the linkage design of the ultrasonic car, the pressure sensor and the controller, the ultrasonic probe array can be ensured to be closely fitted with the surface of the tunnel lining at all times, the stability and accuracy of the detection are further improved, the manual intervention and operation difficulty are reduced, and the labor intensity of the workers is greatly reduced.

[0040] The device makes the ultrasonic probe adapt to different tunnel lining shapes and complex geometric structures, and improves the applicability of the device; meanwhile, the device adopts an automatic control mode, realizes continuous detection of large-range lining of the tunnel, adopts an array type ultrasonic probe to increase a detection area, effectively improves detection efficiency, and reduces detection cost.

[0041] Although the utility model is described in terms of a limited number of embodiments, those skilled in the art, with the benefit of the above description, will appreciate that other embodiments can be envisaged within the scope of the utility model thus described. Furthermore, it should be noted that the language used in the specification has been chosen primarily for readability and instructional purposes and can not have been selected to convey an exhaustive list of inventive concepts. Therefore, numerous modifications and changes can be made to the embodiments described without departing from the scope and spirit of the appended claims. Any reference numerals in the claims are not intended to limit their scope.

Claims

1. An apparatus for automatically detecting internal defects in a concrete lining of a tunnel by ultrasonic waves, characterized by comprising: The ultrasonic vehicle (2), the moving platform (7) and the supporting device are included. The supporting device includes a first movable joint (3), a first electric push rod (4), a second movable joint (5) and a supporting arm (6); the supporting arm (6) is vertically fixed on the moving platform (7), the other end of the supporting arm (6) is connected with the first electric push rod (4) through the second movable joint (5), and the output end of the first electric push rod (4) is fixedly connected with the bottom of the ultrasonic vehicle (2) through the first movable joint (3). The ultrasonic vehicle (2) is internally provided with an ultrasonic probe array (10), a spring (11), a first pressure sensor (12) and a second electric push rod (13); the bottom end of the ultrasonic probe array (10) is connected with a clamping plate through the spring (11), and the first pressure sensor (12) is arranged between the ultrasonic probe array (10) and the clamping plate; and the bottom of the clamping plate is connected with the second electric push rod (13).

2. The automatic ultrasonic tunnel for detecting internal defects of concrete lining device according to claim 1, characterized in that, The top of the ultrasonic vehicle (2) is provided with an ultrasonic vehicle wheel (1).

3. The apparatus according to claim 2, wherein the apparatus is characterized by: A second pressure sensor is arranged at the bearing position of the ultrasonic vehicle wheel (1).

4. The apparatus according to claim 3, wherein the apparatus is characterized by: The supporting arm (6) is of an electric telescopic structure.

5. The automatic ultrasonic tunnel for inspecting internal defects of concrete lining device according to claim 1, characterized in that, The first movable joint (3) and the second movable joint (5) can rotate by 180 degrees.

6. The automatic ultrasonic tunnel for inspecting internal defects of concrete lining device according to claim 4, characterized in that, The bottom of the moving platform (7) is provided with a moving platform wheel (8), and the moving platform wheel (8) is connected with a moving platform motor (9).

7. The apparatus according to claim 6, wherein, The first electric push rod (4), the supporting arm (6), the moving platform motor (9), the first pressure sensor (12), the second pressure sensor and the second electric push rod (13) are electrically connected with an external controller.

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