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Crack width detection device, concrete crack detection method

A detection device, crack width technology, applied in the direction of measuring devices, using optical devices, optical testing flaws/defects, etc., can solve problems such as imaging blur

Active Publication Date: 2021-08-06
SANY CONSTR TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the camera is set facing the side wall of the detection hole, in some cases, such as the case of a small detection aperture, there is a problem of blurred imaging due to the camera's inability to focus at a macro distance

Method used

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  • Crack width detection device, concrete crack detection method
  • Crack width detection device, concrete crack detection method
  • Crack width detection device, concrete crack detection method

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Embodiment Construction

[0060] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific implementation manners described here are only used to explain relevant content, rather than to limit the present invention. In addition, it should be noted that, for the convenience of description, only the parts related to the present invention are shown in the drawings.

[0061] It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0062] Such as figure 1 As shown, the “end wall” of the detection hole 31 referred to herein refers to the inner wall of the detection hole 31 extending along its radial direction; the term “side wall” of the detection hole 31 refers to the inner w...

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Abstract

The invention provides a crack width detection device, including: a detection component and a display device, the detection component includes: a tube body, in the shape of a column, used for inserting into a narrow and long detection hole of a component to be detected; a camera, connected with the tube body, and the camera is used for Set facing the end wall of the detection hole, take pictures of cracks on the side wall of the detection hole, and send them to the display device; plane mirror, connected to the pipe body, set corresponding to the side wall of the detection hole, used to reflect the side wall of the detection hole to the camera, plane mirror The distance L1 to the camera, the distance L2 from the plane mirror to the side wall of the detection hole, and the focal length f of the camera meet: ; The display device displays the actual width of the crack according to the crack picture. The invention also provides a concrete crack detection method. This application realizes the change of the direction of the optical path through the plane mirror, and solves the problem of macro imaging through the setting of the shooting distance and the numerical range of the focal length of the camera, and the reading is convenient.

Description

technical field [0001] The invention relates to the technical field of concrete crack detection, in particular to a crack width detection device and a detection method thereof. Background technique [0002] Concrete is a common engineering material for various infrastructure projects (including prefabricated buildings), and concrete cracking is a common problem that occurs in concrete structures. Especially for prefabricated buildings, cracks are prone to occur between the prefabricated layer and the cast-in-place layer. If cracking occurs, the degree of corrosion of concrete and steel bars will increase, thereby affecting the bearing capacity and durability of the foundation. It is of great significance to ensure the quality of prefabricated buildings to avoid damage to reinforced concrete foundations by regularly detecting whether the concrete foundation is cracked and the width of the cracks, analyzing the causes of cracking and taking appropriate control measures in tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/95G01N21/01G01B11/02
CPCG01B11/022G01N21/01G01N21/95
Inventor 徐鑫张猛
Owner SANY CONSTR TECH CO LTD
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