1517results about How to "Achieve consistency" patented technology

The present invention relates to one kind of powerful buckle for prefabricated unit, prefabricated unit with the buckle and it forming process. The powerful buckle has screw thread connecting or bayonet jointing structure with steel bar hole in the center and upset steel bar head clamping stage around the steel bar hole. The prefabricated pre-stressed unit has reinforcing rib skeleton comprising longitudinal ribs and ring ribs and the each end of its longitudinal ribs are bayonet jointed to the upset steel bar head clamping stage. After the powerful buckle has the end fixed onto the fixing board and expanding board and set inside formwork, and concrete is deposited and the expanding board is drawn to set pressure, to form centrifugal pile and obtain prefabricated pre-stressed unit.

The invention relates to a twist-off picking paw mechanism and a picking method thereof. The mechanism is characterized by comprising a bracket provided with an upper support plate and a lower support plate, a screw transmission device arranged on the upper support plate, a rotation device arranged on the lower support plate, and a paw device connected on the rotation device; the screw transmission device is connected with a screw through a screw motor, and the screw is in threaded connection with a slide block passing through two guide rods; the rotation device is connected with a rotary input shaft through a rotation motor, the rotary input shaft is fixedly connected with a driving wheel which is engaged with a driven wheel on a rotary output shaft, and the rotary output shaft is in rotary connection with the lower support plate and passes through and is fixedly connected with a substrate; and the paw device comprises two fixed plate arranged on the substrate, the other ends of the two fixed plates are hinged with an L-shaped finger driving plate respectively, a V-shaped finger is fixed on the lower parts of the finger driving plates respectively, the upper parts of the finger driving plates are provided with a chute respectively, a push rod is connected in the two chutes together through a connecting pin, and the other end of the push rod passes through the rotary output shaft and is fixedly connected on the slide block.

The invention discloses a core-shell-structure ZrB2-SiC / Si composite powder and a preparation method thereof. The composite powder comprises an inner core and an outer shell coated outside the inner core, wherein the inner core is ZrB2 and SiC or the inner core is ZrB2 and Si, and the outer shell is a ZrB2 layer. The invention also discloses a preparation method of the core-shell-structure ZrB2-SiC / Si composite powder, which comprises the following steps: 1) refinement of the particle sizes of original powders; 2) spray drying and aggregation granulation of powder; 3) coating of powder; and 4) high-temperature sintering. The high-melting-point ZrB2 is adopted to protect the inner SiC, thereby effectively preventing the SiC from decomposition and burning loss in the plasma spraying process and implementing consistence of the coating composition and powder composition. The ZrB2 and SiC microzones in the powder are uniformly dispersed, and the coating prepared by plasma spraying can implement multiphase microzone uniform distribution and promote the enhancement of the coating performance.