9results about How to "Short power path" patented technology

A prefabricated outer side formwork truss structure for immersed tubes includes a truss body and a longitudinal connection assembly. The truss body includes an inner chord of the body, an outer chord of the body, a horizontal web of the body and an oblique web of the body. The inner chord of the body is welded with two reinforcing ribs. The upper and lower sides of the reinforcing ribs are respectively welded to the inner ends of two adjacent oblique webs of the body. The reinforcing ribs are welded to the inner ends of a corresponding horizontal web of the body, and the two reinforcing ribs are connected to steel tie rods. In the embodiment of the present invention, the steel tie rods are connected to the reinforcing ribs installed on the inner chord of the body. The reinforcing ribs connect two oblique webs of the body and one horizontal web of the body, shortening the force transmission path and preventing the web from being compressed and instable. The webs are connected on both sides of the reinforcing ribs as anchor points of the steel tie rods to reduce the span, reduce the local bending moment, and use a small amount of steel. The side formwork truss structure bears the steel bar system conversion load generated by the top truss and can withstand the concrete side pressure, thereby achieving the purpose of reducing the number of steel tie rods.

The invention discloses a buoyancy tank telescopic gravity type tide gate, and belongs to the field of hydraulic engineering and tide protection, the buoyancy tank telescopic gravity type tide gate comprises power generation box bodies fixed on shores on two sides, the two power generation box bodies are respectively connected with one end of a gate body telescopic box, the other ends of the two gate body telescopic boxes are connected through a butt joint device, and the two gate body telescopic boxes are both provided with driving devices. The output end of the driving device abuts against the butt joint device, the driving device controls the gate body telescopic box to stretch out and draw back, and a gate bottom plate is further arranged between the bottom ends of the two power generation box bodies and used for being connected with the gate body telescopic box. According to the large-span gate, through the telescopic characteristic of the gate body telescopic box and under the help of the driving device, flexible stretching, stable moisture blocking and efficient storage of the gate body telescopic box are achieved, meanwhile, the docking device is used for assisting rapid closing and separating of the gate body telescopic box, and closing and separating of the large-span gate are achieved.

The utility model provides a photoelectric turret ball cabin structure with weak optical axis offset, which relates to the technical field of engineering design, and comprises a front cover assembly, a pitching frame assembly, a rear cover assembly, a load frame, a laser range finder assembly, a visible light camera assembly and a thermal infrared imager assembly, the consistency of the optical axes of the three optical loads of the laser range finder, the visible light camera and the thermal infrared imager can be conveniently adjusted; in addition, the force transmission path between the front cover assembly fixing position and the three optical load fixing positions and the force transmission path between the rear cover assembly fixing position and the three optical load fixing positions are prolonged, and meanwhile the force transmission path between the pitch axis system and the three optical load fixing positions is shortened. The deformation of the load frame and the influence on the consistency of the optical axes of the photoelectric turret after the front cover assembly and the rear cover assembly are installed and fixed are reduced, and the problem that the optical axes relatively move and deviate in the installation process of an existing photoelectric turret is solved.

The utility model discloses a wind-resistant system of a flexible photovoltaic support. The wind-resistant system comprises a plurality of flexible support units; the connecting rods are connected between the adjacent flexible support units; the uplift piles are fixedly arranged; and the steel wire rope is connected between the flexible support unit and the uplift pile. By adopting the structure, the wind-resistant system of the flexible photovoltaic support is simple in connection structural form, short in force transmission path of the structure, flexible in installation and suitable for complex terrains such as mountainous regions, the wind vibration effect of the flexible support can be greatly reduced, and the lateral wind load resisting capacity of the flexible support is greatly improved.

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.

An immersed tube prefabricated opposite-pulling outer side formwork truss structure comprises a truss body and a longitudinal connecting assembly, the truss body comprises a main body inner chord member, a main body outer chord member, a main body horizontal web member and a main body inclined web member, and the main body inner chord member is connected with two reinforcing rib plates in a welded mode; the upper side and the lower side of each reinforcing rib plate are connected with the inner ends of every two adjacent main body diagonal web members in a welded mode, each reinforcing rib plate is connected with the inner end of the corresponding main body horizontal web member in a welded mode, and the two reinforcing rib plates are connected with the steel pull rods. According to the embodiment of the invention, the steel pull rod is connected to the reinforcing rib plate mounted on the main body inner chord member, and the reinforcing rib plate is connected with the two main body diagonal web members and the main body horizontal web member, so that a force transmission path is shortened, and the web members are prevented from being pressed and unstable; the web members are connected to the two sides of the reinforcing rib plates serving as steel tie rod anchor points, the span is reduced, the local bending moment is reduced, the steel bar system conversion load generated by the top truss is borne by adopting a small-steel-amount side formwork truss structure, the concrete side pressure can also be borne, and the purpose of reducing the number of steel tie rods 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.