4results about How to "Overall stability" patented technology

Composites of silicon and various porous scaffold materials, such as carbon materials comprising micropores, mesopores and / or macropores, and methods of making the same are provided. The compositions have utility in various applications, including electrical energy storage electrodes and devices comprising electrical energy storage electrodes.

The utility model relates to the technical field of medical auxiliary instruments, and discloses an assist device for cardiothoracic surgery, which comprises two vertical rods, the tops of the two vertical rods are fixedly connected with a cross rod, the inner side surfaces of the two vertical rods are slidably sleeved with a plurality of lifting plates, the bottoms of the plurality of lifting plates are provided with rotating shafts, the side walls of the rotating shafts are movably sleeved with two sleeves; the two sleeves are fixedly connected at the bottom of the lifting plate, the two ends of the rotating shaft are fixedly connected with gears, strip grooves are formed in the inner side faces of the two vertical rods, racks are fixedly connected in the two strip grooves, and the two gears are meshed with the two racks respectively. The height of the supporting plate main part is adjusted in a mechanical matching mode, the precision of the adjusting process is higher, the lifting process of the supporting plate main part is more stable, the one-way rotary driving mechanism only needs to be operated with one hand in the operation process, and the operation process is more convenient.

The present application relates to the field of prefabricated concrete pile production, and specifically discloses a preparation method of a centrifugal reinforced prestressed solid square pile, comprising: mold pretreatment and cage reinforcement assembly, primary high-strength concrete distribution, mold closing and prestress tensioning, five-stage gradient centrifugal forming, residual slurry and impurity discharge, pile core high-strength concrete grouting and densification, and high-pressure steam curing. The present application uses gradient centrifugation to compact the outer layer of the pile body concrete layer by layer and uniformly arrange the aggregate, eliminates the soft interlayer of the pile core by discharging the residual slurry, and then fills the internal voids by secondary grouting of the pile core and low-speed centrifugal compaction, forming a full-face homogeneous structure with dense outer layer and high-strength core. Finally, the high-pressure steam curing strengthens the overall performance. The present application effectively solves the technical defects of uneven cross-section density and high core porosity caused by the traditional vibration process, significantly improves the compressive strength, bending performance and structural stability of the pile body, and is suitable for industrialized mass production.