Ultrasonic probe pressing fixing device

Abstract

The present invention provides a pressurizing and fixing device for an ultrasonic probe. The first clamping structure in the device includes a first pressure arm and a first guide arm which are perpendicular to each other. One end of the first guide arm is fixedly connected to the upper end of the first pressure arm. , the other end is provided with an external thread and a guide groove; the second clamping structure includes a second pressure arm and a second guide arm perpendicular to each other, one end of the second guide arm is fixedly connected with the upper end of the second pressure arm, and the other end Sliding fit with the guide groove of the first guide arm; the lower ends of the first pressure arm and the second pressure arm are provided with probe card slots; the control nut is matched with the external thread of the first guide arm, facing the end surface of the second pressure arm A limit structure is provided, and a slip ring that can rotate relative to the control nut is clamped on the limit structure; one end of the tension spring is fixedly connected to the slip ring, and the other end is fixedly connected to the second pressure arm. The ultrasonic probe pressurizing and fixing device can control the pressing force on the ultrasonic probe, thereby reducing human detection errors.

Description

technical field [0001] The invention relates to a fixing device, in particular to a pressure fixing device for an ultrasonic probe. Background technique [0002] Non-destructive testing technology has always been a research hotspot. Many domestic and foreign literature on non-destructive testing involve ultrasonic testing methods. Ultrasonic testing is a comprehensive technology that integrates sensor, signal processing, pattern recognition and image display technologies. In the testing of concrete strength, ultrasonic testing is widely used. [0003] The principle of ultrasonic testing of concrete strength is that the propagation speed of ultrasonic waves in concrete is closely related to the elastic properties of concrete, and the elastic properties of concrete can basically reflect the strength of concrete. Specifically, the elastic parameters related to concrete can be obtained according to the basic acoustic research, and the relationship is as follows: [0004] ...

AI Technical Summary

Problems solved by technology

During this testing process, different pressing forces applied to the ultrasonic probe will result in different testing results, so the control of pressing force is more likely to cause testing errors

A large number of ultrasonic testing experiments show that: because different testing personnel control the pressing force of the ultrasonic probe differently, when testing the same specimen, the testing results obtained by different testing personnel will be quite different; The same test piece is tested multiple times, and the control of the pressing force of the ultrasonic probe is different each time, resulting in a large difference in the test results obtained each time.

Images