3results about How to "Reduce closure" patented technology

The invention provides a lightweight monitoring and rapid evaluation analysis method and system for small and medium span highway bridges. Comprising a bridge parameterization rapid input module, a vehicle load batch input module, a measuring point information arrangement module, a finite element calculation and analysis module, a batch load working condition measuring point result automatic extraction module and a cloud highway bridge structure response monitoring module. The method has the following advantages: 1, on-site appearance quality acquisition, material performance test, dynamic characteristic test and other work of the bridge are not needed, the safe traffic coefficient of the bridge can be evaluated in real time only by monitoring the dynamic deflection of the measuring point at the key section position based on the standardized structural characteristics of the small and medium span bridge, and the real-time performance of the evaluation result is realized; and 2, under any traffic flow condition, real-time dynamic verification coefficients of various types of overweight vehicles under different driving conditions and bridges can be accurately calculated, and timely safety early warning is realized, so that expenditures of a large amount of manpower, material resources and the like required by a load test are saved, and the cost is greatly reduced.

The invention discloses a telescopic transverse folding airfoil and an unfolding and locking mechanism, and relates to the technical field of aerospace. The airfoil specifically comprises an airfoil body, the airfoil body comprises a first airfoil and a second airfoil, the first airfoil is rotationally matched with the second airfoil through a torsion bar assembly, when the airfoil body is unfolded, the side face of the second airfoil is flush with the side face of the first airfoil, and when the airfoil body is folded, the second airfoil is perpendicular to the first airfoil; the telescopic end of the unfolding locking mechanism is connected with the bottom of the first wing surface; the baffle assembly is arranged on the outer side of the telescopic end of the unfolding locking mechanism in a sleeving mode and makes contact with the bottom of the first wing face. The first airfoil and the second airfoil are transverse folding airfoils, the airfoil body is folded in the circumferential direction of the aircraft, the space outside the aircraft is reasonably utilized, and the appearance envelope of the airfoil body is further reduced when the aircraft is loaded.

The application belongs to the field of civil construction equipment, and particularly relates to a stable post-grouting device suitable for a vibrated cast-in-place pile, which comprises a pile body and a pile tip, the pile tip is provided with a grouting cavity, the lateral wall of the pile tip is provided with a grouting hole connected to the grouting cavity, the upper side of the grouting hole of the pile tip is provided with a ring capsule, and the ring capsule is connected with a grouting pipeline; wherein the ring capsule can be extended and retracted on the surface side of the pile tip, and the ring capsule can be expanded out of the surface side of the pile tip after grouting, the ring capsule can form a grouting stopping structure before one-time grouting, the closure of the grouting hole is reduced, and the problems in the prior art are effectively solved.