42results about How to "Accurate flaw detection" patented technology

The invention provides a wheel-set flaw detection driving device which comprises two driving parts and a driving motor. Each driving part comprises a support part, a support plate, a rotating wheel mounting base, a driving wheel and a driven wheel; each rotating wheel mounting base comprises a first bottom plate, a first flank and a second flank, wherein the first flank and the second flank each comprises a first through hole used for installing the corresponding driving wheel, a first slot hole used for installing the corresponding driven wheel and a groove used for clamping a wheel shaft, each support part is installed at the bottom of the corresponding support plate, and the driving motor is connected with a central shaft of each driving wheel. According to the wheel-set flaw detection driving device, by means of the support parts, treads of support wheel sets get away from the ground, the driving motor drives the driving wheels to rotate and drive the wheel shafts of the wheel sets to rotate, abrasion caused by contact between the treads of the wheel sets and the ground is reduced, stable rotation of the wheel sets can be guaranteed, and therefore the flaw detection device can conduct accurate flaw detection on the wheel sets.

A curved-surface rotation axis superposed rotation electromagnet comprises a main rotation electromagnet, wherein the main rotation electromagnet comprises a yoke, coils, a main shaft, a cover plate and an universal ball, a bearing is fixedly arranged in the center of the yoke, the main shaft is arranged on the bearing, one end of the main shaft penetrates through a bottom end of the yoke and is provided with an engagement bayonet, the other end of the main shaft extends to a central round hole of the cover plate, a main shaft curved-surface sliding groove is formed in the main shaft at a lower side of the cover plate, a cover plate curved-surface sliding groove is formed in one side, near to the yoke, of the cover plate, the cover plate curved-surface sliding groove and the main shaft curved-surface sliding groove are matched to form a limitation groove, the universal ball is arranged in the limitation groove, and the main shaft curved-shaft sliding groove is an irregularly-shaped curved-shaft sliding groove of which the curvature of a curved surface is gradually changed. By the curved-surface rotation axis superposed rotation electromagnet, a large torque is provided, and flaw detection and check can be accurately performed on a steel material in a high-temperature temperature; and after the electromagnets in two different working directions are combined, the detection mechanism is automatically opened and closed by circuit control.

An ice-breaking and snow-melting cleaning robot for a medium and low speed maglev, comprising a rack (11), folding bending mechanisms, an ice-melting and cleaning mechanism, and an autonomous cruise module (7). The rack (11) spans between two F rails of a low and medium speed maglev to be detected. There are two groups of folding bending mechanisms, which are disposed at two ends of the rack (11) respectively and are located above the F rails. Each group of folding bending mechanisms is provided with a walking wheel pair (5) and a detent wheel pair (2). The snow-melting and cleaning mechanism comprises a fixing frame (15), an F rail obstacle-removal and cleaning unit (14), and an ice-melting heating unit (16). The fixing frame (15) is mounted on the rack (11), located above the folding bending mechanisms, and deployed along the extension direction of the F rails. The F rail obstacle-removal and cleaning unit (14) and the ice-melting heating unit (16) are disposed at two ends of the fixing frame (15) respectively. The autonomous cruise module (7) is mounted below the rack (11). The cleaning robot can melt and clean ice and snow on the F rails, and is simple in structure and convenient to operate.

The invention provides a drilling platform safety detection method and detection equipment, which can analyze a radio frequency signal sent by ultrasonic transceiving equipment to obtain an ultrasonicspectrogram so as to fit an amplitude curve and determine multiple groups of curve characteristics of the amplitude curve. And then characteristic recognition is carried out in combination with the operation characteristics corresponding to the operation data list of extraction equipment communicated with an oil and gas pipeline, so that a flaw detection result of the oil and gas pipeline is generated. Thus, the flaw detection of the oil and gas pipeline can be achieved on the ultrasonic level, then slight damage in the oil and gas pipeline is recognized, and even if oil and gas leakage doesnot occur to the oil and gas pipeline, accurate flaw detection can still be conducted on the oil and gas pipeline through the scheme.

The invention relates to the technical field of ultrasonic flaw detection, in particular to a hollow axle ultrasonic flaw detector, which includes a flaw detection assembly, a docking platform and a feeding device. The flaw detection assembly is in butt joint with a hollow axle through the docking platform, and is driven by the feeding device to enter the hollow axle to perform detection. The hollow axle ultrasonic flaw detector no longer uses a line type balancer while installing the flaw detection assembly to the axle, but uses the docking platform to bear the flaw detection assembly, thus alleviating the labor force needed for left-right movement and up-down movement of the flaw detection assembly. In addition, an ultrasonic probe adjusts the gap between the outer surface of the ultrasonic probe and the inner surface of the hollow axle through a self-adaptive adjustment device, so that the gap between the ultrasonic probe surface and the hollow axle inner surface can always keep consistent during high-speed rotating flaw detection by the universal probe, thus preventing a supplied turbine oil membrane on the ultrasonic probe surface from thickening, and ensuring accurate time and locations for ultrasonic wave emission and ultrasonic wave receiving during ultrasonic probe detection.