85 results about "Local structure" patented technology

The invention discloses a method for determining the importance degree of seepage monitoring points of an earth and rockfill dam and application of the method. The method comprises the following steps that six seepage safety parts of the earth and rockfill dam are recognized, wherein the six seepage safety parts comprise a dam body, an anti-seepage body area, an inverted filtration drainage area, a dam penetrating building area, a dam foundation and a bank slope area; constructing an earth and rockfill dam seepage Bayesian network according to a historical monitoring text, and calculating importance degrees of six seepage safety parts; acquiring three-dimensional space coordinates of the seepage monitoring points: stake numbers, wheelbases and elevations; calculating the comprehensive importance degree of each part to each section of the monitoring point; and superposing the comprehensive importance degrees of the cross sections in the transverse, longitudinal and horizontal directions to obtain the importance degrees of the monitoring points. According to the method, historical monitoring text mining, a Bayesian network probability model and a three-dimensional space attenuation algorithm are coupled, and the importance degree of a quantitative measuring point is calculated, so that the problem that a traditional method depends on experience and neglects local structure defects is solved; and the high-weight section automatically triggers special inspection of the corresponding seepage safety part, so that timely further disposal is facilitated, and the safe operation life of the dam is effectively prolonged.

The invention provides a steam generator local three-dimensional two-phase flow analysis and calculation method and system, a geometric model of a steam generator is divided into a heat transfer tube bundle area and a local structure area, a high flow rate phenomenon caused by the local structure area is considered, and the local three-dimensional two-phase flow of the steam generator is calculated through boundary conditions of the geometric model of the steam generator. According to the method, the heat transfer tube bundle area and the local structure area are subjected to coupling calculation, the local structure area is introduced into model calculation, the local high flow speed phenomenon of part of the heat transfer tubes of the steam generator can be accurately analyzed, and therefore the possible heat transfer tube flow-induced vibration and abrasion problems can be predicted more accurately.

The utility model discloses a combined ecological fence which comprises a fence body, mounting mechanisms are fixedly arranged at the four corners of the fence body, supporting mechanisms are fixedly arranged at the front positions of the upper ends of the two sides of the fence body, and buffering mechanisms are fixedly arranged at the rear positions of the upper ends of the two sides of the fence body. When the fence is used, through the design of the supporting mechanism and the buffering mechanism, when the fence encounters wind blowing, animal collision or other external force in the using process, impact force can be transmitted to the supporting mechanism through the blocking net, at the moment, a movable block arranged on the supporting mechanism can slide on a sliding rail, and through movement of a hinge rod, the movable block can slide on the sliding rail; the local structure of the fence is adjusted to adapt to the action of external force and dispersion force, the fence is prevented from being damaged due to local stress concentration, meanwhile, movement of the moving block is transmitted to the moving plate of the buffer mechanism through the moving rod, the moving plate compresses the buffer spring and the spring damper, and the spring damper can effectively consume impact energy.

An anchoring assembly for a riser fitting uses a plate and a sleeve to support a short pipe that penetrates the floor of a structure (such as a building) in which the riser is located. Studs extending from the plate and the sleeve engage the floor and enhance the local structural strength of the floor. A bracket engaging the plate is used to mount the short pipe within the sleeve. A riser fitting element is attached to the end of the short pipe. Fire-resistant insulation is positioned between the short pipe and the sleeve.

The application discloses a kind of semi-covering layer semi-bedrock foundation gravity dam foundation seepage prevention water stop design method, belong to the field of hydraulic engineering design.This application method is aimed at the complex conditions of semi-covering layer semi-bedrock foundation, adopts zoning combination seepage prevention scheme: bedrock region sets seepage prevention curtain, covering layer region sets seepage prevention wall;Comprehensive construction period structure dead weight, running period structure dead weight, water pressure, uplift pressure and other loads, design seepage prevention wall top and dam foundation embedded joint and dam bottom local structure, reserve deformation and with two purple copper water stop to realize water stop by asphalt mortar joint filling;Finally, the rationality of scheme is verified by three-dimensional finite element seepage deformation numerical calculation.This application breaks through the limitation of traditional design, provides quantitative design method, and has strong operability, provides technical support and reference for similar projects.

The utility model belongs to the technical field of molds, and relates to a child folding plastic dining chair mold. The chair back forming mold comprises a chair back forming lower mold and a chair back forming upper mold, and an injection molding part is arranged above the chair back forming upper mold. In the injection molding process, molten materials are injected into the cavity through the injection molding piece, side holes of the plastic chair back can be synchronously formed through the side double-hole coaxial core pulling assembly, hole grooves with small diameters on the inner side and hole grooves with large diameters on the outer side are formed, a plurality of side hole grooves with different diameters are formed at a time, secondary machining treatment is not needed, and the production efficiency is improved. According to the injection mold, the working procedure is shortened, the production efficiency is improved, the pitched roof auxiliary forming part can synchronously form the local structure of a plastic part, after injection molding is completed, the formed plastic part is ejected out through the straight ejection demolding part and the pitched roof auxiliary forming part, and the demolding area and efficiency are greatly improved by adopting a straight and pitched roof combined ejection structure.

The utility model provides a kind of joint for metal winding reinforced composite pipe, it is related to metal winding reinforced composite pipe auxiliary structure technical field, it aims at solving the problem that existing joint for metal winding reinforced composite pipe adopts hot melt joint, conventional joint adopts single-layer structure design, and the relative sealing of local structure of joint is poor, including pipe body, the pipe body is metal winding reinforced composite material, the right end of the pipe body is movably connected with joint, the abutting position of the pipe body and joint is handled using welding, the joint adopts multilayer structure setting, the inner layer of the joint is sealed inner tube, the outer layer of the joint is outer sealing tube, the middle part of the outer sealing tube is designed using bellows.

The application provides a station mark detection method and related equipment. First, the local part of the station mark is detected, and a candidate combination frame is determined according to a suspected frame pair in the result that meets a screening condition. The suspected frame pair includes a station mark pattern detection frame and a station mark character detection frame. The candidate combination frame is a circumscribed rectangle of the station mark pattern detection frame and the station mark character detection frame. The serialized features of the candidate combination frame are extracted and classified to determine whether the candidate combination frame is a station mark combination. Finally, the sub-frame and the parent frame in the station mark are output. The station mark pattern detection frame and the station mark character detection frame are the sub-frames, and the candidate combination frame is the parent frame. By using the topological relationship (correlation relationship) between the local structure of the station mark, the detection of the local part (sub-frame) and the whole (parent frame) of the station mark can be realized end to end, the situation of missing detection of the local part of the station mark is reduced, and the efficiency and accuracy of station mark detection and identification are improved.

The invention discloses a momentum wheel mounting structure optimization and verification method suitable for in-orbit vibration source frequency avoidance, and the method comprises the steps: determining whether the momentum wheel generates resonance at a normal working rotating speed or not through the response measurement of the speed increasing process of the momentum wheel under the condition of a free boundary of a whole satellite, and further generating disturbance vibration to other sensors; establishing a system-level whole satellite model containing an assembly or a local simulation model capable of reflecting installation local rigidity, and carrying out modal analysis; the method comprises the following steps: under limited space constraints, carrying out operation efficacy and reinforcement state simulation iteration without disassembling a product, determining a reinforcement mode direction according to a formation, determining specific parameters according to frequency, and carrying out convergence to obtain a lightest, most efficient and operable integrated lightweight reinforcement structure under different momentum wheel mounting positions; and performing reinforcement design to the whole satellite, performing momentum wheel acceleration process response measurement under the condition of the free boundary of the whole satellite, determining the local structure frequency of the reinforced momentum wheel according to the formant occurrence frequency, and determining whether the in-orbit frequency avoidance reinforcement design meets the requirement or not.

The invention discloses a disease treatment method for old airport lanes in a high heat area. The method comprises the following steps: S1, disease evaluation and classification treatment; s2, planning a processing scheme; s3, high-temperature-resistant composite cover surface treatment; and S4, interface reinforcement and drainage optimization. According to the method, the pavement disease type and severity are determined by evaluating and classifying the diseases, the treatment scheme is determined according to the pavement disease type and severity, local structure repair is performed according to the treatment scheme, and compared with an existing cement concrete plate replacement repair mode, the method has the advantages of being short in construction period and low in cost.

The present application relates to the technical field of local structure damage detection, and particularly relates to a local structure hazard analysis method using digital twinning. The method acquires measured strain signals and vehicle parameters when a standard vehicle passes over a bridge, and extracts a normalized measured feature vector. At the same time, an isomorphic simulation feature vector is generated based on the vehicle parameters and a finite element model. An optimal transmission coupling matrix between the two is calculated using the Sinkhorn algorithm, and a distribution pattern transmission cost and an adaptive sparse weight are obtained, solving the recognition error caused by the phase shift in the waveform space. By minimizing the transmission cost and applying sparse constraints, the equivalent cross-section reduction coefficient of each unit is inverted, and the precise positioning of local stiffness damage is realized. Finally, the model material parameters are updated synchronously, and the load bearing capacity reduction rate of the structure is calculated through nonlinear whole-process analysis. The present application can accurately quantify the influence of local damage on the overall safety of the structure under the conditions of unknown vehicle weight and waveform shift.

This invention relates to a structural damage diagnosis method based on iterative calibration image measurement, belonging to the field of structural damage diagnosis. The method specifically includes the following steps: dividing the engineering structure into multiple substructures, each substructure containing at least three measurement points, with at least 2 / 3 of the measurement points in two adjacent substructures overlapping. Based on the characteristic relationship between the upper and lower structures, the homography matrix H is used to correct the upper structure to the same plane as the lower structure. The overall modal parameters of the structure are extracted using the relative displacements obtained from the tests, and damage identification is performed by combining this with the mode shape curvature. For each layer of the iteratively corrected structure, the natural frequencies and mode shapes of the overall structure are calculated based on the derived relationship between the Fourier spectrum of the local structural relative displacements and the overall structural characteristic quantities. The location of the damage is then determined based on the change in mode shape curvature, with the curvature calculated using the central difference method. This invention provides a convenient and economical method for identifying damage in engineering structures.

The invention discloses an excavator and a tooth holder and bucket tooth connecting device and method thereof, and belongs to the technical field of excavators. The tooth holder and bucket tooth connecting device comprises a tooth holder and bucket teeth connected to the tooth holder; through cooperation of the outer hexagonal boss of the positioning pin and the spring, pressing, rotating and locking of the positioning pin are achieved, mounting and dismounting of the bucket tooth can be completed without violent modes such as hammering, the labor intensity of constructors is greatly reduced, the replacement efficiency is improved, and the bucket tooth replacement device is particularly suitable for the operation scene of high-frequency bucket tooth replacement and has a wide application prospect. The positioning column of the tooth holder is provided with the containing groove and the inserting groove instead of a penetrating through hole, so that the local structural strength of the tooth holder is prevented from being greatly reduced, the fatigue fracture fault at the pin hole is effectively reduced, the service life of the tooth holder is prolonged, and the use cost is reduced.

The invention discloses an unsupervised multi-modal equipment instance alignment method based on double-space embedding, and the method comprises the steps: employing a pseudo seed generation module, calculating the similarity of visual and text modal features, automatically constructing a preliminary pre-alignment instance pair, continuously expanding a high-confidence seed set in an iteration process, and carrying out the alignment of an unsupervised multi-modal equipment instance. The method comprises the following steps: firstly, carrying out data labeling on equipment instances, so as to effectively reduce the dependence on manual data labeling, then respectively carrying out embedding learning in Euclidean space and hyperbolic space by adopting a double-space embedding strategy, capturing a local structure relationship between the equipment instances, and carrying out accurate modeling on a hierarchical structure and global distribution characteristics of the equipment instances, and then, by constructing an adaptive feature fusion module, carrying out dynamic weighted integration on the embedded representations of the two spaces, and by introducing an iterative constraint mechanism and utilizing a loss function, ensuring that the representations of the same instances in the double spaces are as close as possible and the distance between different instances keeps enough discrimination.

The application provides a thin interbed high-resolution processing and identification method based on structural constraint compressed sensing, and improves the resolution of thin layers and thin interbeds by structural constraint; on the basis of traditional compressed sensing for improving seismic resolution, the problems that the spatial connection of seismic data is ignored in the actual processing process and the lateral continuity is difficult to maintain due to the interference of lateral noise are considered; structural information existing in a local structure tensor of seismic profile data is used; a feature vector of the structure tensor is introduced to establish a structural constraint term; and subsequent sparse inversion of seismic reflection coefficients and convolution with a wide-frequency wavelet are completed; frequency width compensation is reasonably performed to improve the main frequency; a high-resolution seismic profile based on structural constraint of the structure tensor is obtained; the applicability of the compressed sensing high-resolution method in a complex geological structure environment is improved to improve the continuity of the processing result; and therefore the identification and prediction ability of the thin layer is effectively improved.

The utility model provides a compression roller for textile equipment, relates to the technical field of compression roller auxiliary devices for textile equipment, and aims to solve the problems that the local structure of the surface of an existing textile compression roller is damaged, the compression roller needs to be integrally replaced and the production and processing cost is increased due to the fact that the existing textile compression roller adopts an integrated structural design. A roller sleeve is movably connected to the outer wall of the rotating shaft, connecting rods are evenly distributed on the inner wall of the roller sleeve, sliding grooves matched with the tail ends of the connecting rods are formed in the outer wall of the rotating shaft, the cross section of the tail end of each connecting rod is of a wedge-shaped structure, and the roller sleeve and the rotating shaft are detachably connected through a limiting sleeve matched with a fastener.

The present application relates to a kind of underwater robots, the purpose is to provide a kind of IPMC-based bionic odd shrimp device, which should be simple, small in size with the characteristics of local structure, facilitate underwater detection.Techinical scheme is a kind of bionic odd shrimp device based on IPMC drive, the device includes head, body and tail piece connected in sequence, and a plurality of wings connected on both sides of the body;Characterized in that: the head is provided with tentacle;The body includes a plurality of shell bodies connected in sequence and respectively provided with the wing piece, the closed inner cavity is formed between each shell body and connected with the head, three IPMC drive controllers and battery for controlling wing piece, tentacle and tentacle are arranged in the inner cavity;The head is provided with a small hole instead of odd shrimp eye, camera and illuminating lamp are arranged in the small hole;The wing piece, tail piece are all made of IPMC drive material and electrically connected IPMC drive controller.

The invention relates to the technical field of ultra-supercritical valve cover steel casting manufacturing, in particular to a casting method for reducing cracks of a ZG13Cr9Mo2Co1NiVNbNB valve cover steel casting. A first chilling block and a second chilling block are arranged at the bottom of a flange part and the bottom of a small end part correspondingly, and conformal chilling blocks and tie bars are evenly arranged at the fillet connecting position of the flange part and the small end part; the rigidity and the strength of a local structure are enhanced, so that stress generated by shrinkage is resisted, cracks are effectively prevented from appearing at round corner parts in the solidification and cooling process of the valve cover, and stress concentration is reduced.

This invention discloses a numerical analysis method for fluid-structure interaction (FSI) of unsaturated slopes under free drainage conditions, belonging to the field of numerical analysis technology for slope engineering. The method includes: constructing an unsaturated multi-source parameter model of the slope region; building a dynamic boundary model with hysteresis response and gradual release characteristics based on boundary element water content, water potential gradient, and rainfall input information; jointly updating the internal water content gradient, local structural changes, and permeability coefficient field of the slope; correcting the seepage direction through a path enhancement factor; and identifying local preferential flow channels and seepage concentration areas. Iterative solutions are then obtained through adaptive time step adjustment, residual convergence control, and anomaly element correction strategies. This method improves the physical consistency of the free drainage boundary description, enhances the ability to identify preferential flow channels and local seepage concentration areas, and improves the computational stability and engineering applicability of FSI analysis of unsaturated slopes.

The application discloses a flexible job shop scheduling method and device based on sub-batch division, and comprises the following steps: in the iteration cycle step, individual sorting is performed on the initial population according to fitness, a guide wolf individual is selected from the sorted population, and an individual is selected to establish an external file; the guide wolf individual is used to guide and optimize the subordinate wolf individual in the population through the grey wolf optimization algorithm; the coding of the individual in the initial population is randomly adjusted based on sub-batch division to expand the search range; the coding of the individual in the initial population is optimized and adjusted in a local structure; and the external file established by the individual selected from the population is output, and a scheduling scheme is selected from the external file. By using the above technical scheme, the calculation amount of production scheduling can be reduced, and unnecessary time consumption can be reduced through reasonable sub-batch division; the population evolution is accelerated, and the convergence speed is accelerated by designing multiple guide mechanisms; and for the decision wolf individual, a local search based on a key task is designed to find a better solution.

The invention discloses a transition groove welding method, and relates to the technical field of welding manufacturing. The method comprises the following steps: modeling a partial structure of the transition groove; generating a welding program according to a modeling result; a transition groove is installed, and the welding procedure is executed; and the steps are repeated until the overall welding of the transition groove is completed. According to the transition groove welding method provided by the invention, the mode of combining staged three-dimensional modeling and offline programming is adopted, the local structure of the transition groove is modeled firstly, the corresponding welding program is generated, and then welding is automatically executed by a robot; the traditional complex welding process which depends on manual experience and needs to be transferred and turned over for multiple times is changed into a standardized and automatic process, so that the consistency and the stability of welding seam quality are effectively guaranteed, the production efficiency is remarkably improved, the manufacturing period is shortened, and meanwhile, the labor intensity and the safety risk of operators are reduced.

The invention discloses a self-bearing structural member based on a longitudinal bearing framework of a retired wind power blade. The structural member is formed by segmenting an out-of-service wind power blade and comprises a composite shell unit composed of a blade shell and a longitudinal bearing framework located in the shell unit and continuously arranged in the axial direction, and the longitudinal bearing framework at least comprises a spar cap and a shear web. The longitudinal bearing framework and the shell unit form a collaborative stress system through an original composite material structure connection interface of the wind power blade, so that a structural component achieves self-bearing under the condition that no external bearing frame exists. On the premise that the continuity of a main bearing path of the longitudinal bearing framework is kept, selective local structure treatment is carried out on the shear web, and the engineering adaptability of a structural component is improved under the condition that the overall stress performance is not weakened. According to the method, the original bearing structure of the retired wind power blade is fully utilized, and a feasible engineering technical scheme is provided for structured and high-value reutilization of the retired wind power blade.

The utility model discloses a dash panel assembly and a vehicle, the dash panel assembly is used for the vehicle and comprises: two longitudinal beams which extend along the front-back direction of the vehicle and are spaced along the left-right direction of the vehicle; the dash panel body is located between the two longitudinal beams, and the two ends, in the left-right direction, of the dash panel body are connected with the two longitudinal beams correspondingly; at least one end of the two ends of the dash panel body in the left-right direction is connected with the longitudinal beam through the connecting assembly. According to the dash panel assembly, collision force borne by the dash panel assembly can be well transmitted in the left-right direction, the situation that the collision force is excessively integrated is effectively avoided, the deformation quantity of a local structure is reduced, the dash panel assembly and the vehicle with the dash panel assembly are firmer, and the anti-collision capacity and safety are improved.

Electronic chip intended to be glued. This description relates to an electronic chip (1000) comprising a first main face (100), intended to be glued, a second main face (200), lateral faces (301, 302, 303, 304), the second main face (200) comprising a central zone (210) and a peripheral zone (220) locally structured so as to form successively, from the central zone (210), a first part (221) having a first thickness, a second part (222) having a second thickness, the first thickness being less than the thickness of the central zone (210), the second thickness being greater than the first thickness and less than the thickness of the central zone (210). Figure for the abbreviation: Fig. 1

The invention relates to the technical field of LNG ship manufacturing, in particular to a corner structure for a transverse bulkhead platform of an LNG filling ship and a mounting method of the corner structure. The corner structure for the transverse bulkhead platform of the LNG filling ship comprises a corner structure body defined by a transverse bulkhead plate, a bulkhead platform plate, a broadside platform plate and a longitudinal wall plate, the transverse bulkhead plate is fixed to an upper side wall plate and a lower side wall plate, and the broadside platform plate is provided with an extending edge extending outwards to be in butt joint with a bulkhead inner platform at the position of a transverse bulkhead. An arc notch is formed in the butt joint corner, and a blocking plate for blocking the arc notch is arranged on the transverse bulkhead plate. The stress concentration at the corner is avoided by forming the arc notch, namely the negative corner, in the platform plate, at the moment, the local structure at the corner does not bear large concentrated stress any more, the anti-fatigue performance is improved, and then the problems that in the prior art, arc transition cannot be adopted on an LNG filling ship, and stress concentration can be caused by conventional design are solved.

This utility model discloses an intelligent turnover box with a modular RFID chip installation structure, relating to the field of logistics container technology. It includes a turnover box body and a cover plate. The cover plate is welded to one side of the turnover box body, and the cover plate and the turnover box body are connected as one unit by ultrasonic welding. A groove is provided at the bottom of the cover plate for attaching the RFID chip. Several guide positioning posts are provided on one side of the turnover box body. This utility model allows for the design of cover plates of different sizes and local structures according to different RFID chips. The cover plate is then securely fixed to the turnover box using ultrasonic welding, enabling the turnover box to have a function of rapid, contactless information reading. Compared to traditional turnover boxes that use surface bonding, bolts, or rivets to fix the RFID chip, this solution uses a modular structure and ultrasonic welding process, which can greatly improve installation efficiency and save labor costs.

A method includes obtaining (i) a point cloud, captured by a depth sensor, of a structure and an obstruction, and (ii) a plurality of local structure planes derived from the point cloud and corresponding to respective portions of the structure, for each local structure plane: selecting a membership set of points from the point cloud, generating a mask based on the membership set of points, selecting a subset of points from the point cloud based on the local structure plane and the mask, and detecting obstructions from the subset of points.

The invention provides a bidirectional coupling simulation calculation method, device and equipment for ship local slamming upwave water elasticity, and the method comprises the steps: determining a structure node hydrodynamic load of a local structure grid of a ship local structure based on the displacement and flow field effect generated by the ship local structure during slamming upwave and a preset shell unit model; in each solving time step, determining a structure node displacement update value of the local structure grid based on a structure node hydrodynamic load; based on the structure node displacement update value, determining a boundary node displacement update value of a surface fluid grid of the ship local structure and a flow field computational domain grid update value; and performing flow field iteration simulation calculation based on the flow field calculation domain grid update value until a comparison result of two adjacent iteration simulation calculation results is smaller than a preset threshold value or the number of iterations is larger than an iteration number threshold value. According to the scheme provided by the invention, refined simulation of load distribution and local structure response of the ship local structure under the action of the slamming load is realized.

The application relates to the technical field of engineering design, in particular to a non-Darcy seepage stress coupling simulation method based on a fracture and matrix grid, information such as input fracture and matrix unit grids, boundary conditions, material parameters and control parameters is input; initial values and initial stresses of basic unknown quantities are given; at each time step, matrix seepage and embedded fracture non-Darcy flow iterative solving and matrix stress balance equation solving are sequentially carried out; whether convergence is judged, if the time step calculation does not converge, the next step iterative solving is continuously carried out; after the convergence condition is reached, the next time step solving is entered until the time ends. The application provides a high-precision and high-efficiency non-Darcy seepage stress coupling simulation method, and improves the problems of great difficulty in modeling of local structure surfaces, low efficiency and poor effect in traditional finite element solving, and can effectively simulate non-Darcy seepage characteristics and mechanical deformation behaviors of rock mass under high seepage pressure.

The invention belongs to the field of preforming model design, and discloses a material preforming model parameterization design method and system. The method comprises the steps that S1, a preset die forging model is segmented into a plurality of split bodies in the segmentation direction, and split body set information and split face information between split body sets are obtained; s2, determining a connection relationship between the cut bodies, and carrying out segmented description on the overall characteristics of the preset model; s3, shape description is carried out on the sections of the split bodies; s4, identifying the boundary of the section and generating a section curve of the split body; and S5, determining section curves at the segments in combination with the overall feature information, then sweeping all the section curves of different segments, and combining to obtain a complete pre-forming model. According to the method, the design efficiency can be improved, the design effect is optimized, and the method is suitable for regulation and control of the material flowing process and automatic and intelligent optimization of the local structure of the material pre-forming model.