3results about How to "No indentation" patented technology

The utility model discloses a model bracket for ship design, including multi -angle fastening adsorption subassembly, multi -angle fastening adsorption subassembly includes strip -shaped groove, circular receiving groove, sphere, receiving cylinder, cylindrical groove, cylinder rod and sucking disc, the strip -shaped groove and circular receiving groove are set up on the bracket main part, the sphere is movably connected in the strip -shaped groove and circular receiving groove, the receiving cylinder is fixedly connected on the sphere middle part, the cylindrical groove is set up in the receiving cylinder, the cylinder rod is movably connected in the cylindrical groove, the sucking disc is fixedly connected on the cylinder rod top. The utility model ball can make the sucking disc with the ship model surface form adaptive tilt in the rotation of circular receiving groove, ensure that sucking disc overall even stick together, eliminate the edge " line contact " stress concentration problem caused by traditional rigid connection, protect the ship model surface made of brittle material such as resin, ABS and do not produce indentation or crack, can further avoid the phenomenon of stress damage of ship model.

This invention belongs to the field of welding materials technology, specifically providing a single-sided welding double-sided forming backing flux, comprising the following raw material components by mass percentage: fused magnesia: 20-40%; quartz: 25-35%; zircon sand: 8-18%; fluorite: 5-15%; ferrosilicon: 3-10%; ferrotitanium: 3-10%; ferroboron: 1-2%; α-alumina: 1-5%; manganese oxide: 1-5%; strontium oxide: 0.5-1.5%; yttrium oxide: 0.5-1%; iron powder: 3-10%; phenolic resin: 2-10%. This backing flux is suitable for double-wire or triple-wire single-sided welding double-sided forming processes, and can meet the welding requirements of 10-35mm large ship panel DH36, EH36, DH40, EH40, etc. It is suitable for high heat input and high efficiency welding, with uniform and stable weld formation, no porosity or indentation, automatic slag removal, and excellent crack resistance.

The utility model relates to the technical field of oil drainage of oil tanks, and provides an airplane oil drainage device which is used for ejecting a precipitation valve of an oil outlet to achieve oil drainage and comprises an ejector pin and an oil guide pipe, the ejector pin comprises a pin body and a connecting cylinder, and the pin body is arranged on the inner wall of the connecting cylinder. The lower end of the connecting cylinder and the upper end of the oil guide pipe are sleeved in an abutting mode and connected through screws on the side face. Compared with the prior art, welding is avoided, the ejector pin and the oil guide pipe are convenient to disassemble and assemble, and the ejector pin or the oil guide pipe can be independently replaced if the ejector pin is damaged in the follow-up using process.