Device and method for detecting fitting degree of connecting rod bushing by ultrasonic wave

A device for detecting a fitting degree of a connecting rod bushing by an ultrasonic wave, a connecting rod being placed on the device for detecting the fitting degree of the connecting rod bushing by the ultrasonic wave when in use, wherein the device comprises a mobile platform, a rack, a fixture assembly and a detection assembly;

• the rack comprises a top portion, a bottom portion and a side wall;
• and the side wall is provided with an opening on an opposite side, and the top portion and the bottom portion are opposite, and are both perpendicular to the side wall;
• the mobile platform is mounted on the top portion of the rack;
• the fixture assembly comprises a big head hole fixture, a connecting rod body fixture and a fixture base;
• the detection assembly comprises an ultrasonic flaw detection card, an ultrasonic probe and a computer;
• the big head hole fixture comprises a plurality of positioning blocks, the positioning blocks in a transverse section have a common point, and the common point is located in a center of circle of the big head hole when the connecting rod is placed on the device for detecting the fitting degree of the connecting rod bushing by the ultrasonic wave;
• the fixture base is arranged on an upper surface of the bottom portion of the rack, the ultrasonic probe is arranged at a lower end of the mobile platform, and the ultrasonic probe is capable of moving up-down and left-right, and is capable of rotating;
• the big head hole fixture and the connecting rod body fixture are arranged on an upper surface of the fixture base;
• the ultrasonic probe is connected with the ultrasonic flaw detection card, the ultrasonic flaw detection card is connected with the computer, the ultrasonic flaw detection card is capable of stimulating the ultrasonic probe to emit the ultrasonic wave, and the ultrasonic flaw detection card collects echo data and sends the echo data back to the computer for analysis;
• and
• the plurality of positioning blocks are capable of moving and contacting with an inner wall of the big end hole, and stop moving after contacting with the inner wall of the big end hole, the connecting rod body fixture is capable of moving and clamping the connecting rod, and the ultrasonic probe is capable of moving to attach to the connecting rod bushing.