4results about How to "Short power path" patented technology

The invention relates to a parallel loading wing type large-span cantilever truss structure system and a mounting method thereof, the structure system is formed by connecting a plurality of loading wing type trusses which are arranged along the outer edge of a main body structure in parallel at intervals and unfolding wing type trusses on the outermost side in parallel, and the trusses are connected into a space whole through horizontal connecting components. The wing carrying type truss comprises a vertical bearing part and a horizontal overhanging part which are inclined from inside to outside, a wing carrying structure is formed, and overhanging loads are efficiently and obliquely transmitted to a main body structure. Reinforcing components such as three-fork web members are arranged at the ends of the wing-unfolding type trusses, and the rigidity of the ends is enhanced. The mounting method adopts sequential construction of pushing truss by truss from one end to the other end and synchronously connecting horizontal members. The problems that a traditional solid-web cantilever beam is huge in dead weight, insufficient in rigidity and large in building space occupation are solved, and the large-span solid-web cantilever beam has the advantages of being reasonable in stress, small in steel consumption, large in spanning capacity and wide in building space and is suitable for large-span cantilever buildings such as stadiums and terminal buildings.

This application belongs to the technical field of aircraft emergency door slide pre-positioning mechanism design, specifically involving an aircraft emergency door slide pre-positioning mechanism. The design establishes a connection between the handle tension cable, the slide release push-pull cable and the door handle and slide release mechanism. The switching between the pre-positioned state and the pre-positioned release state is realized by rotating the central axis. It replaces the complex mechanical linkage mechanism, has fewer parts, is lightweight, has a short force transmission path, high reliability, and good maintainability.

The invention relates to an ultralight high-stability structure for supporting an optical lens of a space camera. The supporting structure provided by the invention is mounted on the main bearing structure through the primary mirror light inlet, so that the self structure is extremely light and small, and in addition, the supporting structure is extremely suitable for being integrally designed with the secondary mirror assembly, so that the secondary mirror assembly is lighter and smaller. All functions of a traditional lens barrel type supporting structure between the primary lens and the secondary lens are achieved only through one part, the structural configuration, the installation interface and the surface treatment state of the supporting structure are extremely beneficial to miniaturization of a secondary lens assembly, blocking of an optical lens is reduced, stray light of an optical system is eliminated, and the service life of the optical system is prolonged. And the structural configuration can adapt to various process manufacturing forms such as machining, 3D printing and casting, and important significance is achieved.

The present application relates to a kind of cylinder type launching folding four-rotor unmanned aerial vehicle, including upper casing, lower casing, front casing, rear casing and four arms, further including connecting piece and four V-shaped springs, arm pivot and inclined table corresponding with arm one to one arrangement.It is automatically unfolded under the cooperation of V-shaped spring and inclined table, and is locked under the constraint of connecting piece, arm pivot and one of upper casing and lower casing, realizes the automatic unfolding and unfolding position locking of arm, improves the safety and reliability of unmanned aerial vehicle flight.The unfolded arm only needs to be operated by hand operation to be quickly folded back.The arm is X-shaped when unfolding, so that the force transmission path is shorter, and the structural stiffness is improved.The arm is machined to receive the spring, and the weight of the arm is reduced.The arm is placed in the middle part of the body, and the battery diameter and propeller diameter can be larger, so that the power efficiency of the unmanned aerial vehicle is improved.The electronic equipment is installed in the hollow space of upper and lower casing, so that the space utilization of the unmanned aerial vehicle is improved.