5results about How to "Reduce contact damage" patented technology

The utility model provides a kind of convenient mooring structure suitable for water level change, including the mooring bitt fixed on the top of dike, mooring bitt is used to connect first section steel wire rope, the tail end of first section steel wire rope connects metal ring, metal ring is simultaneously connected with intermediate segmented steel wire rope, another end of intermediate segmented steel wire rope is alternately connected with multiple intermediate segmented steel wire ropes by metal ring;When mooring, the ship cable bitt of ship is selectively connected with metal ring by mooring rope, to adapt to water level change.This structure can well adapt to water level change, and then ensure that ship can be conveniently and reliably realized mooring under different water levels, and then ensure the safety and convenience of mooring.

This utility model discloses a miniature ball bearing for a cooling fan, comprising an outer ring, an inner ring, a cage, a dust cover, and rolling elements movably disposed between the outer and inner rings. Both the inner and outer peripheral walls of the outer ring and the inner ring have circumferentially formed grooves for the rolling elements to move. Both ends of the inner peripheral wall of the outer ring have circumferentially formed stepped grooves for installing the dust cover. The connections between the grooves of the inner ring and the outer peripheral wall of the inner ring, and between the grooves of the outer ring and the inner peripheral wall of the outer ring, have chamfered edges. A retaining spring is provided in the stepped groove for an interference fit with the stepped groove. The inner wall of the retaining spring abuts against the outer wall of the dust cover, while the outer peripheral wall of the dust cover has a clearance fit with the inner peripheral wall of the stepped groove. The curvature coefficient of the grooves of the outer ring is greater than that of the grooves of the inner ring. This utility model solves the problems of traditional miniature ball bearings, such as increased bearing ellipticity due to dust cover installation leading to out-of-tolerance bearing ellipticity, and assembly damage during rolling element installation leading to unqualified rolling element vibration during bearing operation.

The present application relates to the technical field of medical devices, in particular to a simple multi-scene applicable guide wire channel device for rapid exchange, comprising a gastrointestinal examination instrument body and a plurality of guide wires, the guide wires are matched with sheaths in outer gaps; the guide wires are respectively slidably matched with first and second sleeves, the first sleeve is fixedly connected with an expansion layer outside for expanding the diameter of the intestine, the expansion layer is communicated with the outside through a trachea; the second sleeve is bonded with a fixing belt outside for binding the gastrointestinal examination instrument body, a separation mechanism for separating the fixing belt is arranged at the connection between the fixing belt and the second sleeve; the gastrointestinal examination instrument body is fixed by hand on the guide wire channel, and the gastrointestinal examination instrument body is conveyed to the expected gastrointestinal position along the guide wire, which has the advantages of low cost and convenient operation.

The utility model relates to the technical field of frequency converter copper bar, specifically relates to a kind of frequency converter copper bar connecting fixing device, including bottom plate, and the connecting copper bar is equipped in bottom plate upper end, and two symmetrical connecting seats are fixedly connected in bottom plate upper end, and threaded hole is gouged in connecting seat upper end, and U-shaped connecting plate is equipped in connecting seat upper end, and screw rod is threadedly connected in U-shaped connecting plate upper end, and screw rod is located in threaded hole and is threadedly connected with threaded hole, and connecting copper bar is located between two U-shaped connecting plates, and connecting copper bar includes two side plates in U-shaped connecting plate, and connecting plate is equipped between two side plates, and U-shaped groove is gouged in side plate upper end, and L-shaped connecting plate is fixedly connected in the end of two side plates mutually close, and bottom contact plate is fixedly connected in L-shaped connecting plate outer end, can be realized when replacing connecting copper bar, screw rod is not needed to be unloaded, and the structure in connecting copper bar can be replaced by screw rod loosening, improve the work efficiency of technical personnel.

This invention belongs to the fields of cultural relic protection and computer vision technology. Addressing the problems of low efficiency, poor accuracy, and lack of spatial positioning in traditional methods for detecting defects in ancient city walls, this invention discloses an intelligent detection method and system for surface defects of ancient city walls based on 3D reconstruction. The method includes: processing the texture information of a loaded 3D reconstructed model of the ancient city wall using a multi-strategy texture restoration method; analyzing the model's geometric structure to determine the wall's orientation and dimensional parameters; generating virtual camera positions based on geometric features and a meshed serpentine scanning strategy; rendering RGB and depth images at each virtual camera position; performing defect detection using a YOLO model; mapping the 2D detection results to 3D space to generate 3D defect marker color blocks; and fusing multi-viewpoint results to output the detection results of surface defects on the ancient city wall. This invention achieves efficient, accurate, and automated detection of defects in ancient city walls, providing effective technical support for cultural relic protection.