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Robot and detection method for all-round detection of bottom plate defects of large-volume flat-bottomed containers

A flat-bottom container and robot technology, applied in instruments, measuring devices, scientific instruments, etc., can solve problems such as poor accuracy and low efficiency, and achieve the effects of improving detection accuracy, avoiding low feedback signal strength, and improving defect detection efficiency.

Inactive Publication Date: 2018-09-25
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of low efficiency and poor accuracy in manual flaw detection, and to provide an ultrasonic-based robot for all-round detection of large-volume flat-bottomed container bottom plate defects, which can move in all directions and realize inspection of products. All-round automatic detection of defects, improving detection efficiency and detection accuracy

Method used

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  • Robot and detection method for all-round detection of bottom plate defects of large-volume flat-bottomed containers
  • Robot and detection method for all-round detection of bottom plate defects of large-volume flat-bottomed containers
  • Robot and detection method for all-round detection of bottom plate defects of large-volume flat-bottomed containers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1 Ultrasonic-based omnidirectional defect detection robot

[0040] Such as figure 1 As shown, the ultrasonic-based robot construction components for omni-directional detection of large-volume flat-bottomed container bottom plate defects provided by this embodiment include a fuselage 2, a walking device 1 installed under the fuselage 2, and a robot installed at the end of the fuselage 2. Detection device 3.

[0041] The fuselage 2 is a rectangular vehicle frame formed by connecting four installation beams, the two sides are the installation beams for the traveling device, the front end is the installation beam for the detection device, and the middle beams are connected across the middle of the installation beams on both sides.

[0042] Such as figure 1 and figure 2 As shown, the running gear 1 is composed of four independently moving Mecanum wheel mechanisms mounted on the fuselage. Each Mecanum wheel mechanism is composed of a Mecanum wheel 13, a steppi...

Embodiment 2

[0046] Example 2 Defect position detection on the bottom plate of the oil storage tank

[0047] The above is the main structure of the robot. In order to realize the detection of the defect position, it is also necessary to configure a single-chip microcomputer for communication with the mecanum wheel 13, the stepper motor 11, the first motor 31, the second motor 38 and the ultrasonic probe 315. A detector that detects ultrasonic signals. The microcontroller used in this embodiment is Arduino Mega2560, and the detector used is SIUICTS-9009.

[0048] The defect detection method for detecting the bottom plate of the oil storage tank provided in this embodiment uses the robot in Embodiment 1, puts the robot on the bottom plate of the oil storage tank, adjusts the first slider 322 to the side of the first guide rail 323, and adjusts Rotate the adjustment plate 312 and the position of the second slider 320 on the second guide rail 311, so that the ultrasonic probe 315 is close to ...

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Abstract

The invention discloses a robot and a detection method for all-round detection of defects in the bottom plate of a large-volume flat-bottomed container. The robot includes a body, a walking device installed under the body, and a detection device installed at one end of the body; It is composed of four independently moving mecanum wheel mechanisms installed on the fuselage; the detection device is mainly composed of an ultrasonic probe connected to the ultrasonic generator and an ultrasonic probe adjustment mechanism; the ultrasonic probe adjustment mechanism includes driving the ultrasonic probe along the horizontal direction The first adjustment mechanism that moves and the second adjustment mechanism that adjusts the height of the ultrasonic probe so that the ultrasonic probe is attached to the surface of the bottom plate of the detected container for detection. The robot can not only realize the all-round defect position detection of the detected container, but also avoid the missed detection caused by the low feedback signal strength caused by the non-perpendicular direction of the ultrasonic wave and the direction of the defect, and improve the detection accuracy.

Description

technical field [0001] The invention belongs to the technical field of non-destructive testing, and relates to a defect detection robot, in particular to an ultrasonic-based omnidirectional defect detection robot, a defect detection method using the robot, and using the robot to detect the bottom plate of an oil storage tank. Background technique [0002] Surface defects are generally areas with uneven local physical or chemical properties on the metal surface. Surface defects are parts with high atomic activity and often become the starting position of metal corrosion, which will seriously affect the performance of the product. Taking the storage tank as an example, the storage tank is an important tool for storing flammable, explosive, volatile and toxic media such as crude oil, intermediate oil, and refined oil, and is widely used in industry, national defense, petroleum, petrochemical and other industries. Due to the long-term operation of the storage tank under natural ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/04G01N29/265
CPCG01N29/048G01N29/265G01N2291/023G01N2291/2695
Inventor 伍剑波王荣彪罗阳王杰黄晓明
Owner SICHUAN UNIV
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