30results about How to "Rounded structure" patented technology

The invention relates to ultra-fine nano-porous metal and a preparing method thereof. Specifically, amorphous alloy serves as a precursor, elements except Ag, Pt, Pd, Au, Cu, Ni, Ru, Rh, Os, Ir and other precious metal in the alloy are removed through a dealloying method, a nano-porous structure is formed, simple substance metal or alloy serves as band, the characteristic size of the frenula is smaller than 10 nanometers, and the time roughening feature is not obvious. The prepared ultra-fine nano-porous metal is provided with the ultra-fine holes and the frenula, and the integrity and the self-restraint performance of the structure can be still maintained after 70% of the volume is lost. The preparing method is simple, and adaptability is wide.

The invention relates to a flexible cable, in particular a semiconductive EVA plastic shielded flexible cable and a manufacturing method thereof. The cable comprises a copper core conductor (10), and is characterized in that the outer layer of the copper core conductor (10) is successively coated with a polrvinyl chloride insulating layer (20), an aluminium foil nylar (30), a fibrage layer (40), an EVA plastic shielding layer (50) and a polrvinyl chloride outer sheath (60), wherein the six parts are coated from inside to outside layer by layer. The invention adopts a new formula, and coordinates with the related process and manufacturing method to provide a new semiconductive EVA plastic shielded flexible cable which has good machining property, light weight, rounding and compact structure, excellent bending resistance, high strength of extension, excellent shielding property and long service life.

The present invention relates to the field of robotics. The purpose is to provide an end effector of a rope-driven harvesting robot, which should have the characteristics of compact structure, small size and high reliability. The technical solution is: a rope-driven picking robot end effector, characterized in that: the end effector includes a pair of grippers arranged on the base, a cutter arranged on one of the grippers, and drives the two grippers respectively. Two first rope-driven mechanisms that move to open and close the gripper to grab the fruit, and a second rope-driven mechanism that drives the cutter to rotate to cut off the fruit stem; the gripper includes a support plate that is swingably positioned on the base and The hemispherical grab boards arranged on the support plate, the inner sides of the two grab boards are arranged oppositely; the cutter is rotatably positioned on the outside of one of the grab boards through the rotating shaft; the first rope drive mechanism includes a first drive unit, transmit the power of the first driving unit to make the gripper close the first driving rope, and drive the elastic component to open the gripper.

The invention discloses a hybrid loose-tube stranded optical cable and a manufacturing method thereof, and also includes a manufacturing device. The optical cable includes a sheath, and a metal moisture barrier layer and a yarn binding layer arranged in sequence on the inner layer of the sheath from outside to inside. , the binding layer is provided with at least one loose tube with built-in optical fiber bundles or ribbons and at least one central strength member, which is wound longitudinally around the central strength member by "SZ" stranding, and the loose tube with built-in optical fiber bundles or optical fiber ribbons The gaps between the ferrules are filled with loose ferrules for fiber bundles with small core counts. The production method includes: the central strength member, the loose tube with built-in optical fiber bundle or optical fiber ribbon, and the loose tube with small number of optical fiber bundles pass through the wire mold and stranding table, and are pulled to the yarn binding table, and the cable is pulled synchronously by the crawler traction device. The core is driven and pulled to the cable core take-up frame. The cable core structure of the present invention is stable, round, small in outer diameter, high in optical fiber density per unit section, and high in utilization rate of pipeline resources.

The application relates to a split-type arc bottom steel box girder, which relates to the field of bridge engineering. The steel box girder includes n boxes and n-1 cross beams between boxes, n≥2, and any two adjacent boxes pass through one The cross beams between the boxes are connected, and the connection section between the bottom plate of the box and the beam between the boxes is arc-shaped, and the reinforced structure is arranged at the connection between the bottom plate of the box and the bottom plate of the beam of the beam between the boxes, and the reinforced structure The components are arranged on the inner side of the bottom plate of the box body. The present application solves the technical problem of poor vortex vibration performance of the split steel box girder.