4results about How to "Payload" patented technology

A wind tunnel test model structure with a high slenderness ratio belongs to the field of wind tunnel test vehicle design technology. It solves the problems of large vibration amplitude and low data accuracy in existing technologies during testing. Key technical points: The rectifier cap, front cylinder, and front port flange are sequentially bonded together, with the front port flange connected to the front end of the central steel shell; the rear port flange, rear end cylinder, and rear end plate are sequentially bonded together, with the rear port flange connected to the rear end of the central steel shell; a balance sleeve is fitted onto the balance, the central steel shell is fitted onto the balance sleeve, the balance front cone tension plate is connected to the central steel shell, the front end of the balance is connected to the balance front cone tension plate, and the rear end of the balance is connected to the tail end of the balance sleeve. This invention significantly reduces the vibration amplitude of the model structure during testing, avoids damage to the model and equipment caused by resonance, and improves the safety and stability of the entire wind tunnel high angle-of-attack test process; it effectively suppresses the interference of model vibration on measurement results, ensuring accurate and reliable test data acquisition.

This invention discloses nanoparticles for loading dihydroberberine, their preparation method, and applications. The nanoparticles comprise polydopamine (PDA) and polyethylene glycol modified with the PDA. The polyethylene glycol can be amino-NH2-terminated polyethylene glycol. In preparing the nanoparticles, dopamine hydrochloride is oxidatively self-polymerized under alkaline conditions to obtain PDA nanoparticles; the PDA nanoparticles are then modified with polyethylene glycol to obtain the nanoparticles. Utilizing the aromatic ring structure of the PDA in the nanoparticles, dihydroberberine can be stably loaded onto the nanoparticle surface through π–π stacking interactions and hydrogen bonding. These nanoparticles can effectively load and stably encapsulate dihydroberberine without complex chemical modifications to the dihydroberberine molecule, and are relatively safe and biocompatible.

This utility model relates to a prestressed reinforcement structure for concrete beam-column joints, comprising a split steel sleeve consisting of multiple arc-shaped steel plates temporarily fixed to the outside of the frame column by high-strength bolts, with butt joints welded together to form a closed ring structure; a lower connecting steel plate horizontally welded to the bottom of the sleeve; an upper connecting steel plate covering the top of the beam and welded to the sleeve; chemical anchor bolts penetrating the lower connecting steel plate and anchored to the side wall of the prestressed concrete beam; additional longitudinal reinforcement including: steel bars within the beam width fully welded to the steel plate through Φ25mm plug weld holes; longitudinal reinforcement extending to the floor slab outside the beam width and anchored thereto, tied to the stirrups to form a grid; and a grouting layer filling the space between the column and the sleeve. This utility model avoids cutting off the beam, fully preserving the performance of the prestressed tendons; the sleeve and anchor bolts work together to improve the joint's load-bearing capacity and seismic resistance; the modular design adapts to different beam and column sizes, offering strong versatility; construction requires no large equipment, reducing interruptions to building functions.

The application belongs to the field of high-performance flexible sensing fiber, and discloses a UHMWPE-based intelligent rope and a preparation method and application thereof.The method comprises the following steps: controlling the tension of UHMWPE fiber tows in the range of 5N-7N, and uniformly coating a conductive dispersion liquid on the UHMWPE fiber tows at a rate of 1-5 m / min to obtain conductive fibers; uniformly coating an aqueous polyurethane dispersion liquid or a polyvinylidene fluoride solution on the conductive fibers to obtain sensing fibers with a protective layer; and winding the sensing fibers and the UHMWPE fiber tows according to a preset proportion around a core rod at a spiral angle of 45±5° in one of 2-16 spool weaving structures to obtain the UHMWPE-based intelligent rope.The application limits the mass fraction of the conductive dispersion liquid and the protective layer dispersion liquid and the coating rate window, improves the stability of the continuous coating process while taking into account the load capacity, flexibility and preparation efficiency, and is beneficial to large-scale production.The weaving method is used to weave the same into a rope with a proper length, and the rope can be used as an intelligent rope for real-time monitoring of stress, strain and other signals.