10results about How to "Meet engineering requirements" patented technology

The application discloses a shear connector, a steel-concrete composite beam containing the shear connector and a construction method of the steel-concrete composite beam. The shear connector comprises an inverted truncated cone type cylinder (7), a stiffener, a cover plate, a penetrating steel bar (8) and a high-strength bolt (21); the stiffener comprises an integrally formed stiffener bottom plate (13) and a stiffener side plate (14), the size of the stiffener bottom plate is consistent with the size of the lower opening of the cylinder, and the stiffener bottom plate is attached to the lower opening of the cylinder; the stiffener bottom plate is provided with a second connecting hole for connecting the high-strength bolt; the stiffener side plate is arranged around the stiffener bottom plate and is attached to the inner wall of the cylinder; the height of the stiffener side plate is lower than that of the first connecting hole; the cover plate covers the upper opening of the cylinder; the penetrating steel bar transversely passes through the cylinder through the first connecting hole and leaves a connecting section on each side of the cylinder; and the high-strength bolt connects the stiffener bottom plate through the second connecting hole. The application realizes the disassembly and replacement of each component of the shear connector and the prefabricated bridge deck; and the structure form and stress performance of the shear connector are optimized.

The application discloses a high-speed railway bridge rescue evacuation passage state comprehensive evaluation method, comprising the following steps: S1, obtaining appearance and shape parameter measurement results by measuring appearance and shape parameters of an evacuation passage based on unmanned aerial vehicle inspection; S2, obtaining pedestrian comfort evaluation results by evaluating pedestrian comfort of the evacuation passage based on acceleration testing; and S3, performing comprehensive evaluation on the high-speed railway bridge rescue evacuation passage state based on the appearance and shape parameter measurement results and the pedestrian comfort evaluation results. The application also discloses a system, a device, electronic equipment and a computer readable storage medium.

This invention relates to the field of radar fault technology, and more particularly to a three-dimensional visualization method, system, and electronic device for radar fault information. The method includes: establishing a fault information tree structure for the radar according to the hierarchical inclusion relationship of components in each radar cabinet; marking key points on the three-dimensional structural diagram of the component corresponding to each node in the fault information tree structure, and marking the smallest replaceable unit on the component corresponding to each node in the fault information tree structure, thus obtaining the radar fault information tree; constructing a realistic three-dimensional visualization scene of the radar and the roaming action of each key point based on the radar fault information tree; and combining the realistic three-dimensional visualization scene and the roaming action of each key point with the radar fault information tree to obtain a three-dimensional visualized radar fault model, which can provide error information more quickly and intuitively, guiding operators to quickly and accurately locate faulty components of the equipment, effectively shortening maintenance time.

The invention relates to the technical field of airfoil profile optimization design, and particularly discloses an airfoil profile geometric parameterization method and program with self-adaptive orders, equipment and a storage medium. The method aims to solve the problem that precision and efficiency are difficult to balance due to the fact that the order of a Bernstein polynomial depends on manual presetting in an existing CST parameterization technology. According to the core scheme, the method comprises the steps of obtaining airfoil profile coordinate data and performing normalization processing; determining a class function according to the airfoil profile type; automatically searching and determining the optimal order of the Bernstein polynomial by combining a genetic optimization algorithm and taking the relative change rate of the fitting error as a judgment criterion; and constructing a parameterized model based on the optimal order and outputting geometric parameters. The method has the beneficial effects that the self-adaptive determination of the order is realized, overfitting and calculation redundancy are effectively avoided, the design efficiency is improved while the precision is ensured, and the method has good universality and is suitable for parameterization design of various airfoils.

This invention belongs to the field of geotechnical filling construction technology and discloses a method for mixing geotechnical materials. The method includes the following steps: separating and stockpiling various geotechnical materials; determining the single-batch mixing volume of each geotechnical material; using an excavator to load each geotechnical material into a dump truck bed according to its corresponding single-batch mixing volume; dumping the geotechnical materials from the dump truck bed onto the ground to form a first mixed pile; using an excavator to load the first mixed pile into the dump truck bed; dumping the geotechnical materials from the dump truck bed onto the ground to form a second mixed pile; determining whether the second mixed pile is uniformly mixed; if so, transporting the second mixed pile to the filling construction area; otherwise, repeating steps S3, S4, and S5. This method improves the uniformity of geotechnical material mixing and the efficiency of the mixing operation, reduces the cost of the mixing operation, and is not constrained by the construction site.

The utility model discloses a stop valve for a pipeline, and aims to solve the problems that in the prior art, when a stop valve needs to be opened from a closed state, the resistance is large sometimes, a female user often encounters the situation that operation is jammed and laborious, sometimes, the stop valve needs to be quickly closed for throttling, and one circle of 360-degree rotation can be achieved only by screwing the stop valve 4-5 times with the hand each time, so that the use is inconvenient. The manual stop valve comprises a valve body, a valve rod, a valve cover and a manual execution assembly. The valve rod comprises an external thread column, a square head column and a limiting rod body; the manual execution assembly comprises a starting hand wheel, a limiting column, an execution hand wheel and a locking nut. The limiting column is used for limiting the square head through hole; the starting hand wheel comprises a first rim, a first spoke and a first hub; the first hub is provided with a first square-head through hole; the execution hand wheel comprises a second rim, a second spoke and a second hub; and the second hub bag comprises a second square head through hole and an auxiliary rotation execution part.

The application provides a kind of trackside equipment limit fast automatic measurement method, its device includes measuring car, laser scanner, camera, lens, encoder and operation device;Wherein laser scanner, camera and encoder are set on measuring car, lens is set on camera;Laser scanner, camera and encoder are respectively connected with operation device communication;Image is obtained by setting camera, and target equipment area in image is identified by pre-trained model, whether it is the best image is judged according to the position of frame selection area in image, for the best image, the corresponding mileage data is recorded as the actual mileage of corresponding target equipment, after completing the mileage calculation of all trackside equipment, the limit distance of adjacent trackside equipment is calculated, to judge whether it meets engineering requirements.

The application discloses a geometric-independent circular polarization frequency reconfigurable antenna with near-zero dielectric constant and a design method, and relates to the technical field of antennas.The outer conductor of a coaxial connector is connected with a near-zero dielectric constant resonant cavity in a grounded manner, and the inner conductor is connected with a dielectric-filled rectangular waveguide through a feeding probe;one end of the dielectric-filled rectangular waveguide is electrically connected with the coaxial connector, and the other end is in communication with the opening of the near-zero dielectric constant resonant cavity; a gyromagnetic material doped body is arranged in the central region inside the near-zero dielectric constant resonant cavity; a metal upper cover plate covers the top of the near-zero dielectric constant resonant cavity, and the metal upper cover plate is provided with a ring-shaped gap radiation structure; and a magnetic biasing structure is used for applying a static magnetic field along the normal direction of the near-zero dielectric constant resonant cavity to the gyromagnetic material doped body.The application realizes frequency reconfiguration through magnetic control tuning, does not need active switching devices, has high reliability, and is suitable for multiple scene communication requirements.

This application provides a fishing reel grip for connecting to the reel body via a handle, comprising: a housing, a battery, a main control unit, push-button switches, and a support frame; the outer surface of the housing has a control area and a grip area, and the housing is recessed inward to form a finger rest for accommodating fingertips, the finger rest being located between the control area and the grip area; the main control unit, battery, and push-button switches are electrically connected to each other, the support frame is mounted inside the housing, and the push-button switches, main control unit, and battery are respectively mounted on the support frame; multiple push-button switches are exposed in the housing and distributed along the circumferential direction of the control area, the main control unit and battery are located inside the housing and respectively arranged along the axial direction of the grip area, the push-button switches being used to control external recording equipment and a power drive module located in the fishing reel body. This application integrates push-button switches, facilitating one-handed operation, thereby improving adjustment speed, and providing better comfort, meeting ergonomic requirements.

This invention relates to the fields of materials science and intelligent optimization technology, and discloses a multi-objective intelligent optimization method for the composition and heat treatment process of 2xxx series aluminum alloys. This method integrates the XGBoost multi-output prediction model with four intelligent optimization algorithms: Firefly Optimization (FA), Gray Wolf Optimization (GWO), Particle Swarm Optimization (PSO), and Simulated Annealing (SA). Through an automated process of data preprocessing, multi-objective prediction, constraint optimization, and result verification, it achieves the synergistic optimization of the tensile strength (UTS), yield strength (TYS), and elongation (EL) of aluminum alloys. The system uses unique heat encoding to process categorical process parameters, introduces constraint penalty mechanisms and early stopping strategies to ensure that the optimization results meet the requirements of composition ratio and process parameter range. Experimental verification shows that the comprehensive performance of the aluminum alloy optimized by this method is suitable for the performance optimization of 2xxx series aluminum alloys in aerospace, automotive manufacturing, and other fields, significantly reducing R&D costs and time.