5results about How to "Accurate flaw detection" patented technology

This utility model relates to the field of rail flaw detection technology, specifically to an intelligent flaw detection device for welded rails. It includes a robotic arm with a flaw detection component at its front end. The flaw detection component comprises an ultrasonic probe and a reciprocating oscillation component. The reciprocating oscillation component drives the ultrasonic probe to oscillate back and forth between a first oscillation position and a second oscillation position to switch the detection direction. It also includes a coupling component for delivering a coupling agent to the detection surface. This utility model optimizes the structure of the flaw detection device. The reciprocating oscillation structure of the ultrasonic probe can increase the detection area, thereby improving detection coverage. Driven by the robotic arm, the flaw detection component can be moved along the scanning path more automatically and intelligently, accurately completing the flaw detection of the rail, thus ensuring the efficiency and accuracy of the flaw detection results.

The present invention relates to the field of magnetic particle flaw detectors, and specifically to a magnetic particle flaw detector dedicated to the hook body of a train hook. It includes a frame, a lifting bracket component, a left electrode and a clamping mechanism, a hook tail magnetizing component, a right electrode and a rotating clamping mechanism, and an axial magnetizing coil. The lifting bracket component includes a lifting component and a bottom rotating component, and a hook body bracket is provided at one end of the lifting bracket component facing the working area. The hook tail magnetizing component includes a hook tail straight iron core lifting component, a hook tail C-shaped iron core, a hook tail straight iron core fixing plate, and a hook tail straight iron core. The right electrode and the rotating clamping mechanism include a right electrode component and a right clamping component. The end of the right electrode component is provided with a right electrode clamping plate, and the end of the right clamping component is provided with a right clamping plate. The improved magnetic particle flaw detector can realize the flaw detection of the hook tail, the hook ear and the main body of the hook body, and can also realize the automatic flipping of the hook body, with a high degree of automation, which greatly improves the labor efficiency of the hook body flaw detection.

The present invention relates to a brake disc eddy current flaw detection device, comprising a base and a frame, and also comprising a positioning mechanism, a lever mechanism, and a plurality of sensor probes for eddy current flaw detection, wherein the positioning mechanism is arranged on the base, the positioning mechanism comprises a central column, a supporting column, a positioning sleeve and an elastic supporting device, a plurality of the supporting columns are circumferentially arranged around the central column, the positioning sleeve is installed on the end of the central column through the elastic supporting device in a manner that it can rotate around its own axis; the lever mechanism is arranged above the positioning mechanism through a displacement seat to realize the movement of the lever mechanism in four directions of up, down, front and back, the lever mechanism comprises a lever assembly and a rotating mechanism that drives the lever assembly to rotate; a plurality of the sensor probes are installed on the frame so as to align with the to-be-detected parts of the brake disc.

The present invention discloses a method and system for flaw detection of embedded steel wire ropes in conveyor belts, and relates to the technical field of non-destructive flaw detection. The method comprises: obtaining M-channel current frame detection data of the target conveyor belt; determining the peak-to-peak value of the M-channel current frame detection data respectively, and judging whether there is connection part interference of the embedded steel wire rope of the target conveying section according to the size and number of the peak-to-peak value of the target channel data; if there is connection part interference, the connection part state of the embedded steel wire rope of the target conveying section is determined by detecting the jump point; if there is no connection part interference, the signal-to-noise ratio of the target channel data is determined, and judging whether there is a possibility of defect of the embedded steel wire rope of the target conveying section according to the size of the signal-to-noise ratio of the target channel data; if there is a possibility of defect, the defect information of the embedded steel wire rope of the target conveying section is determined by the continuous wavelet transform method. The present invention can realize automatic and accurate flaw detection of embedded steel wire ropes in conveyor belts.

The utility model belongs to the technical field of hydraulic cylinder welding flaw detection, and particularly relates to a hydraulic cylinder barrel and cylinder bottom welding flaw detection device which comprises a base, a portal frame is fixedly connected to the top of the base, and an ultrasonic flaw detector and two chucks are arranged in the portal frame and used for conducting flaw detection on a weld joint. An adjusting and positioning mechanism is arranged between the portal frame and the ultrasonic flaw detector, a lower air cylinder is fixedly connected to the top of the base, and a containing groove is fixedly connected to an output shaft of the lower air cylinder. The hydraulic cylinder bottom centering and fixing device is reasonable in structural design, through the clamping, centering and fixing mechanism, the cylinder bottoms of the cylinder barrels can be centered, clamped and fixed, the situation that the flaw detection precision is affected due to deviation is avoided, the cylinder bottoms of the hydraulic cylinder barrels with different diameters can be fixed, the universality of the device is improved, and the detection accuracy is improved according to the diameters and the lengths of the cylinder bottoms. The height and the position of the ultrasonic flaw detector can be adjusted, so that the universality of the device is further improved.