阅读说明：本技术 一种深井裂缝检测装置 (Deep well crack detection device ) 是由 丁勇 王子祥 崔何亮 丁宥安 于 2020-06-27 设计创作，主要内容包括：本发明公开了一种深井裂缝检测装置,包括钢板、电机、凹槽轮、摄像机、抗震阻尼器、杠铃片。将预制好的钢板上一端安放电机,另一端设置一个固定大小和角度的凹槽轮。也公开了该装置测量方法,将电机和简易小车通过细绳连接,小车在凹槽轮的协助下匀速下降。车体下方中部安置有摄像头,在作业时拍摄井壁视频,摄像头附近的两组漫射大灯,用于作业过程中的补光。车轮上多处绘制花纹标记物,作为后期裂缝参数测量时的参照物。一根表面螺纹状长杆位于小车上方,若干杠铃片安放在长杆上并用螺帽固定,配重可以保证小车在下降过程中稳定。本发明节约人工成本,实时自动监测,保证数据的正确性。(The invention discloses a deep well crack detection device which comprises a steel plate, a motor, a groove wheel, a camera, an anti-seismic damper and a barbell disc. A motor is arranged at one end of the prefabricated steel plate, and a groove wheel with fixed size and angle is arranged at the other end of the prefabricated steel plate. The measuring method of the device is also disclosed, the motor is connected with the simple trolley through a string, and the trolley descends at a constant speed with the assistance of the groove wheels. The middle part below the car body is provided with a camera, a borehole wall video is shot during operation, and two groups of diffusion headlamps near the camera are used for light supplement in the operation process. Pattern markers are drawn at multiple positions on the wheel and serve as reference objects during later crack parameter measurement. A long rod with a threaded surface is positioned above the trolley, a plurality of barbell plates are arranged on the long rod and fixed by nuts, and the balance weight can ensure that the trolley is stable in the descending process. The invention saves labor cost, automatically monitors in real time and ensures the correctness of data.)

1. A deep well crack detection device is characterized by comprising a prefabricated steel plate, wherein one end of the prefabricated steel plate is provided with a motor, and the other end of the prefabricated steel plate is provided with a groove wheel with fixed size and angle; a buffer device composed of springs; a trolley wheel engraved with special patterns; a camera configured with a diffusion headlight; a weight structure for loading the barbell disc.

2. The crack detection device according to claim 1, wherein: the motor is connected with the simple trolley through a string, and the trolley descends at a constant speed along the well wall or the dam under the assistance of the groove wheels due to the rotation of the motor.

3. The crack detection device according to claim 1, wherein: the connection part of the trolley main body part and the wheels is made into an anti-seismic damper by using a spring, so that the vibration of the device caused by the uneven part of the well wall surface is prevented, and the shaking image of a camera is further blurred.

4. The crack detection device according to claim 1, wherein: a camera is arranged in the middle of the lower portion of the trolley, a borehole wall video is shot during operation, pictures are extracted by Python software at the later stage according to frames, and two groups of diffusion headlamps are arranged near the position of the camera and used for supplementing light during operation and highlighting cracks and other characteristics of building defects and backgrounds.

5. The crack detection device according to claim 1, wherein: drawing triangular markers at multiple positions on the wheel, and calculating the width, angle and length of the shooting crack by using a distance and angle formula; can be used for eliminating distortion and reference objects in later crack parameter measurement (such as length, width, area and the like).

6. The crack detection device according to claim 1, wherein: a long rod with a threaded surface is arranged above the trolley, a plurality of barbell plates are arranged on the long rod and fixed by nuts, and the counterweight used for the trolley in the descending process enables the trolley to be stable and not to shake left and right; the number of barbell pieces to be mounted is determined by experiments before operation.

Technical Field

The invention relates to a deep well crack detection device, and belongs to the technical field of image processing.

Background

China is a big building country, the building holding capacity is huge, and buildings with cracks for work are not lacked. Cracks have a crucial influence on the safety and durability of buildings. The building cracks mainly exist on the concrete, the concrete cracks can be divided into micro cracks and macro cracks, the micro cracks basically have no influence on the structure, and most of the concrete works with micro cracks. If the width of the concrete macro crack exceeds the calculation range of the standard for controlling the crack, the concrete macro crack can be regarded as a harmful crack, potential safety hazards can be brought to a structure, safety accidents can be caused, and therefore crack detection is widely concerned by domestic scholars.

At present, a sensor is installed in a shield shaft or dam crack measurement mode through manual climbing, and related information and a change process of the crack are obtained through repeated measurement of the sensor. The disadvantages are mainly shown in that: firstly, the related instruments are high in cost and uneconomical, and meanwhile, the operation of the instruments and devices is complex and needs professional personnel to operate; secondly, the detection methods all need manual operation, and the crack detection data accuracy is not high due to certain subjectivity of manual observation of the concrete structure crack, including the problem of instrument precision; thirdly, the method cannot carry out systematic detection on the change of the concrete structure cracks along with the time.

Therefore, how to reduce human resource investment, increase crack detection precision, and monitor crack development changes for a long time is an important problem to be solved urgently.

Disclosure of Invention

The invention aims to provide a deep well crack detection device, which solves the problems of excessive manual participation, difficult operation, large subjectivity, large error and the like in the conventional crack detection technology.

In order to solve the technical problem, the invention provides a deep well crack detection device.

The invention adopts the following technical scheme:

a deep well crack detection device comprises a steel plate for placing a motor and a groove wheel; a buffer device composed of springs; a trolley wheel engraved with special patterns; a camera configured with a diffusion headlight; a weight structure for loading the barbell disc. The crack detection device is characterized in that the motor is connected with the simple trolley through a string, and the trolley descends at a constant speed along the well wall or the dam under the assistance of the groove wheels due to the rotation of the motor.

In some embodiments, the joint of the main body part of the crack detection device and the wheel is made into an anti-vibration damper by using a spring, so that the vibration of the device caused by the uneven surface of the well wall is prevented, and an image becomes fuzzy after a camera shakes. A camera is arranged in the middle of the lower portion of the device, after a borehole wall video is obtained during operation, pictures are extracted according to frames through Python software, and two groups of diffusion headlights are arranged near the position of the camera and used for supplementing light in the operation process and highlighting cracks and other characteristics of building defects and backgrounds. And drawing triangular markers at multiple positions on the wheel, and calculating the width, angle and length of the shooting crack by using a distance and angle formula. Can be used for eliminating distortion and reference objects in later crack parameter measurement (such as length, width, area and the like). A long rod with a threaded surface is arranged above the device, a plurality of barbell plates are arranged on the long rod and fixed by nuts, and the balance weight of the trolley in the descending process enables the trolley to be stable and not to shake left and right. The number of barbell pieces to be mounted is determined by experiments before operation.

The main effects of the invention are: the simple trolley is used for replacing manual work to submerge into a deep well, a well wall surface picture is obtained, the actual change of the tire marker is found, the mapping relation between the crack and the marker is found, then the change is measured by means of image processing, and the automatic crack change monitoring process is further achieved.

Description of the drawings:

FIG. 1 is a schematic view of the crack detection device of the present invention in an initial state;

FIG. 2 is a schematic view of the anti-shock damper of the wheel connection of the present invention;

FIG. 3 is a bottom view of the detecting device of the present invention;

FIG. 4 is a schematic view of the weight of a barbell disc on the upper surface of the detecting device according to the present invention;

fig. 5 is a schematic view of the present invention in operation.

Detailed Description

The following describes in detail embodiments of the detecting device of the present invention with reference to the accompanying drawings. As shown in the attached drawings of the specification:

referring to the attached figure 1, a motor is fixed at one end of a prefabricated steel plate, and the motor rotates to control the downward movement speed of the detection trolley. The motor is connected with the trolley through a string, and the other end of the steel plate is provided with a groove wheel.

Referring to the attached figure 2, the connection part of the trolley main body part and the wheels is made into an anti-seismic damper by using springs, so that the vibration of the device caused by a plurality of factors such as uneven surface of a well wall or a dam, interference during operation and the like is eliminated, the stability of the device during running is greatly reduced by the vibration, and the installation of the anti-seismic damper is particularly important.

Referring to the attached drawing 3, a camera is arranged in the middle of the lower portion of the car, well wall videos are collected during operation, the camera adopts a lens with 4000 ten thousand pixels, and a waterproof shell is installed on the surface of the camera, so that the effect of avoiding water or damage during well wall operation can be achieved. The remote controller is added to allow for multi-angle shooting at a certain position during detection of the device, and an operator can adjust the angle of the lens at will. Two groups of diffusion headlamps are arranged near the position of the camera, and the brightness gears are adjusted through a remote controller to supplement light with uniform and proper brightness in the operation process and highlight cracks and other characteristics of building defects and backgrounds.

Referring to the attached figure 4, a long rod with surface threads is vertically arranged at the center of the face of the trolley departing from the well wall, a plurality of barbell plates with different masses are rotatably arranged on the long rod and fixed by nuts, and the counterweight of the trolley in the descending process enables the trolley to be stable and not to shake left and right. The number of barbell pieces to be mounted is determined by experiments before operation.

Referring to the attached figure 5, in the operation process of the device, under the rotation of the motor, the detection trolley descends along the well wall at a constant speed, the combined force of the tension of the thin rope and the self weight of the trolley horizontally moves leftwards, and the trolley is guaranteed to move stably and cannot shake left and right. The operator only needs to record which wall of a well that the video of storage was shot, and the video of saving in the memory card is drawed to the later stage, and the video is handled according to the frame with Python, inputs the computer and obtains the crack parameter after saving the picture.