Ultrasonic tail end detection device closely attached to wing curved surface

Abstract

The invention relates to the technical field of wing surface flaw detection equipment, in particular to an ultrasonic tail end detection device closely attached to a wing curved surface. A Z-directionconstant-force telescopic mechanism is used for providing constant force for the connecting block during detection, so that a nylon ball on the three-point normal fitting frame is tightly attached toa wing skin; the three-point normal fitting frame is used for determining the normal of the curved surface and setting the gap distance between the ultrasonic probe and the wing skin; a water curtainflow distribution ring is used for continuously providing water flow along with the probe to form a water curtain; the nylon balls protect the surface of the wing skin from being scratched; an ultrasonic probe and clamping mechanism is used for aligning a wafer of the ultrasonic probe to the normal position of the wing skin; and a water pipe connector is communicated with the water curtain flow distribution ring and used for providing a water source. The device is suitable for internal flaw detection of a low-curvature large-scale double-spherical-surface object; the normal direction of the curved surface is found through the three-point normal fitting frame, so that a proper gap and a proper normal position are kept between the ultrasonic probe and the surface of the wing skin all the time, and stable ultrasonic signals are fully guaranteed to be obtained.

Description

technical field [0001] The invention relates to the technical field of wing surface flaw detection equipment, in particular to an ultrasonic end detection device that closely fits the curved surface of the wing. Background technique [0002] At present, the traditional ultrasonic detection method is to use a hand-held ultrasonic probe and stick the end to the surface to be coated with coupling agent for measurement. This method can have a certain curved surface on the surface of the object to be measured, but it has limitations and is not suitable for measuring large objects. Artificial The method consumes manpower and has low efficiency; the other method is that the object to be inspected is a plane, which can be manually coated with coupling agent directly by mechanical contact. The defect of this method is that it cannot detect curved surfaces, which has great shortcomings. Contents of the invention [0003] (1) Solved technical problems [0004] The purpose of the pre...

AI Technical Summary

Problems solved by technology

[0002] At present, the traditional ultrasonic detection method is to use a hand-held ultrasonic probe and stick the end to the surface to be coated with coupling agent for measurement. This method can have a certain curved surface on the surface of the object to be measured, but it has limitations and is not suitable for measuring large objects. Artificial The method consumes manpower and has low efficiency; the other method is that the object to be inspected is a plane, which can be manually coated with coupling agent by mechanical contact method directly.

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