3results about How to "Authoritative" patented technology

This utility model belongs to the technical field of comparative test blocks and discloses a comparative test block for digital radiography (DR) pipe thickness measurement. It includes a magnetic block with a straight rod connected to its center. A stepped test block is installed in the middle of the straight rod, and a round bar is fixedly installed at the end of the straight rod. Based on the current availability of only one set of data to ensure the authority of the final data used, this method allows for the simultaneous acquisition of data from both the direct measurement method using a round bar and the experimental comparison method using a stepped test block in a single installation. The two sets of data are compared and verified, making the data more authoritative.

This invention relates to the field of electronic payment technology, and discloses a method and system for electronic evidence preservation for transaction security. The method includes: injecting a payment request as an evidence preservation identifier into the transaction data of a payment gateway to generate evidence-preserving transaction data; extracting key elements of the transaction and binding them with the user's payment identity credentials to form a structured evidence preservation instruction; performing a hash operation on the evidence-preserving payload of the instruction to obtain a digital digest; constructing a trusted evidence preservation data packet by combining a timestamp and the digital digest; generating an evidence preservation completion receipt by associating index information with the evidence preservation identifier as the main body; and digitally signing the receipt to finally obtain a digital evidence preservation certificate. This invention can enhance the evidentiary effect of electronic evidence preservation for transaction security.

This invention relates to the field of rolling mill technology, specifically to a rapid adjustment device for the parallelism of rolling mill rolls. The device includes a base plate, a vertical plate, and a main drive mechanism. The output end of the main drive mechanism is meshed with upper and lower distributed work rolls and support rolls. The support rolls penetrate the vertical plate and extend to both sides of the vertical plate. Bearings are fitted onto the work rolls and support rolls at positions corresponding to the vertical plate. The width of the bearing cross-section is greater than the thickness of the vertical plate. Guide grooves are formed on the vertical plate, and a hydraulic mechanism is fixedly installed at the upper end of the guide grooves. This invention allows for easy insertion of the acute-angled tip of a trapezoidal feeler gauge into the narrow gap between two cylindrical bearings, enabling precise positioning and stable support of the support rolls. Combined with a finely adjustable hydraulic lifting mechanism for the work rolls, it achieves standardized and quantitative measurement and comparison of the gap between the two ends of the rolls without relying on the operator's feel, thus providing a direct and reliable basis for rapid and precise adjustment of parallelism.