21602results about How to "Stable support" patented technology

The invention relates to the technical field of medical data processing, in particular to an advanced nasopharynx cancer treatment effect prediction system based on deep learning. According to the invention, a data acquisition module acquires multi-modal medical images and clinical data of a patient from a hospital information system; the data preprocessing module is used for cleaning, registering, normalizing and standardizing the data; the feature extraction module extracts image features by using a convolutional neural network and fuses the image features with clinical features to form a comprehensive feature vector; the model construction and training module constructs a deep learning model, and is adjusted and optimized through training; the treatment prediction module inputs the comprehensive feature vector to obtain a treatment effect prediction result; and the result evaluation and feedback module compares prediction and actual results, calculates indexes and collects and feeds back the improved model. The system comprehensively integrates data, accurately mines features, constructs an effective model, provides personalized prediction to assist clinical decision, continuously improves the model performance, and has important significance in improving the prediction accuracy of the treatment effect of advanced nasopharynx cancer, promoting personalized medical treatment and the like.

The invention discloses a plain river network area in-river pollution analysis method based on a watershed hydrology and water quality model, and belongs to the technical field of water environment comprehensive treatment. According to the method, aiming at the problems that complicated hydrological characteristics and pollution sources in a plain river network area are difficult to trace to the source, accurate analysis of pollutants entering a river is realized through riverway topological relation carding, sub catchment partition division, basin hydrological water quality model construction, pollution load calculation and pollution source composition analysis; the method comprises the specific technical steps of river channel screening and topological relation carding, ArcSWAT-based sub catchment partition division, basin hydrology and water quality model building and simulation, pollution load calculation and pollution source identification. The method can reasonably divide catchment zones, simulate the flushing and river entering processes of pollutants, improve the accuracy of pollution source analysis, significantly improve the treatment efficiency, realize accurate traceability and quantitative analysis of pollutants in plain river network areas, and provide powerful data support and theoretical basis for accurate comprehensive treatment of water environments.

The invention provides a student growth archive management method, which comprises the following steps of: performing structured processing on multi-source heterogeneous data of paper archives, electronic documents and audio and video data by adopting a data acquisition and conversion technology according to heterogeneous data characteristics of student growth archive management, performing data cleaning, conversion and integration operation to obtain unified structured digital information, and storing the structured digital information into a database; a foundation is laid for subsequent big data analysis; based on a result of machine learning analysis, a student portrait and a knowledge graph are constructed, a comprehensive and dynamic student personal file is formed through multi-dimensional description of learning tracks, ability characteristics and psychological characteristics of students, entities such as students, courses, teachers and the like and relationships thereof are visualized by utilizing a knowledge graph technology, and a knowledge graph is created. The association relationship and influence factors among the students are mined, and a basis is provided for personalized education and accurate teaching.

The invention provides an online learning energy concentration degree evaluation method combined with formability evaluation, and belongs to the technical field of online education, and the method comprises the steps: capturing eye movement data of a learner in an online learning process, carrying out feature extraction and time sequence analysis, and combining formability evaluation data to construct a deep neural network energy concentration degree evaluation model. And performing real-time dynamic evaluation on the energy concentration state of the learner by using multi-dimensional indexes such as attention continuity, visual concentration degree and cognitive input degree. Through a sliding time window technology and a specially-designed evaluation equation, the score of the energy concentration degree of each learning stage can be accurately calculated, and finally the overall energy concentration level of the learner is comprehensively output, so that data support is provided for personalized learning. According to the method, learning energy concentration degree monitoring and analysis support is provided, and the problem that it is difficult to continuously, objectively and comprehensively monitor the attention state of a learner on the premise that learning activities are not affected in the prior art is solved.

The invention discloses a thin mutual coal seam fracturing, gasification and carbon sequestration integrated method. The method comprises the steps of geological exploration and coal seam refined evaluation; a middle horizontal well is drilled downwards from the ground; top and bottom horizontal wells are planned and drilled in the uppermost and lower sandstone stratums of the thin mutual coal seam; a plurality of top and bottom fishbone wells are drilled obliquely downwards and upwards in the top and bottom horizontal wells; oxygen-enriched water vapor is injected into the middle horizontal well through a continuous oil pipe, the oxygen-enriched water vapor is squeezed into the reservoir under the action of high pressure, and fracturing operation is conducted; initiating an underground gasification process of the coal seam, and synchronously performing extraction operation of the coal seam gas; supercritical CO2 fracturing operation is conducted on the top horizontal well and the bottom horizontal well; injecting water-based fracturing fluid into the top horizontal well and the bottom horizontal well; gasified materials generated by coal seam combustion gasification and desorbed methane gas are extracted through the middle horizontal well, and supercritical carbon dioxide injected before is sealed for a long time. According to the method, the limitation of a traditional hydraulic fracturing technology can be solved, and the transformation effect of the reservoir can be improved.

The invention relates to the field of flange plate welding, in particular to an automatic flange plate welding device which comprises a fixing table, a three-jaw chuck used for clamping a flange plate is arranged at the upper end of the fixing table, and a fixing mechanism used for fixing the flange plate and a pipeline and a circumferential welding mechanism used for welding the pipeline to the flange plate are arranged above the fixing table. In the downward moving process of the fixing mechanism, the flange plate which is clamped and fixed can be limited in the circumferential direction, the upper end of a pipeline can be pressed, meanwhile, the pipeline can be clamped through the inner clamping assembly, the effect that one machine has multiple functions is achieved, it is ensured that the flange plate and the pipeline reach the optimal alignment state before welding, and the welding efficiency is improved. And meanwhile, the overall structural stability in the welding process can be further improved, the welding quality is improved, and the overall working efficiency is improved.

The invention provides a computer-aided liver surgery-oriented non-rigid point cloud registration method. The method comprises the following steps of: obtaining a source point cloud point set and a target point cloud point set; using a feature extraction module to extract source point cloud point set features and target point cloud point set features; calculating a corresponding relation matrix between the two point sets by adopting an optimal transmission thought based on the point set features of the source point cloud and the point set features of the target point cloud; obtaining an optimal displacement vector according to the corresponding relation matrix, and correcting the source point cloud point set by using the optimal displacement vector to obtain a corrected source point cloud point set; and calculating reconstruction loss based on the corrected source point cloud point set and the target point cloud point set, and training an LCNet model for point set registration. According to the method, the features are extracted through the feature extraction module, the point corresponding relation is calculated through the optimal transmission module, finally, displacement is estimated by solving a related matrix equation, and therefore robustness to noise and rotation changes is achieved.

The invention relates to the technical field of angle steel tower welding, in particular to an angle steel tower base automatic welding system and method.The angle steel tower base automatic welding system comprises a base and a storage table and further comprises a controller, a welding mechanism, a splicing mechanism and a limiting mechanism; the splicing mechanism comprises a driving assembly, four pushing assemblies and eight electric clamping jaws, the limiting mechanism comprises a tightening block, an abutting assembly and a lifting assembly, an L-shaped rod is fixedly arranged at the top of the workbench, and the tightening block is fixedly arranged at the bottom of the lifting assembly. Through multi-directional abutting limiting, the shapes and the relative positions of the bottom plate and the four rib plates can be effectively controlled, internal stress generated by heating in the welding process of the four rib plates and the bottom plate is balanced, welding deformation is prevented, and then the welding effect is improved.

The invention relates to the technical field of wind power generation, and discloses a wind turbine generator set with a vibration reduction function and a construction method thereof.According to the wind turbine generator set with the vibration reduction function, a vibration reduction structure is additionally arranged, and the two elastic ends, arranged in the axial direction, of an elastic buffering piece are connected with the outer wall of a tower drum and the inner wall of a sleeve correspondingly; the elastic buffering piece can effectively absorb and relieve vibration of the sleeve, vibration impact borne by the tower drum is reduced, the overall stability of the wind turbine generator is improved, and safe and stable movement of the wind turbine generator is guaranteed. Compared with a conventional scheme that the diameter or the wall thickness of the tower drum is increased, the damping structure is simple in structure, convenient to install and maintain and low in cost.

The invention provides a modal information constraint-based multi-modal remote sensing image ground object classification method, which comprises the following steps of: firstly, adaptively learning a fusion weight of modal sharing and modal difference characteristics by adopting an MDF decoder, and adaptively controlling the contribution of modal sharing and modal proprietary information from a multi-scale angle so as to reserve the modal proprietary information; then, an MSIE decoder is adopted to guide modal difference features and multi-modal features to carry out a multi-modal auxiliary classification task so as to enhance optical and SAR proprietary information beneficial to classification; therefore, compared with other multi-mode remote sensing image ground feature classification methods, the method is higher in recognition precision, can effectively relieve the ground feature recognition performance bottleneck in a complex scene, and provides effective support for multi-mode remote sensing image interpretation.

The invention discloses a pile-beam integrated bridge girder erection machine which comprises a main beam, a front auxiliary supporting leg, a front supporting leg, a middle supporting leg, a rear supporting leg and a pile driving device, and is characterized in that the main beam comprises a left auxiliary main beam and a right auxiliary main beam which extend front and back, and a steel bar connecting frame is arranged on the front portion between the two auxiliary main beams for connection and fixation; supporting beams extending front and back are fixed to the left end and the right end of a bottom beam of each auxiliary main beam, and a top beam horizontally extending front and back is fixed to the top of each auxiliary main beam. A temporary supporting leg composed of a temporary connecting base, a temporary supporting leg barrel and a temporary supporting block which are installed at the front end of a main beam can support the front end of the main beam after the main beam moves forwards, stable supporting of the main beam is guaranteed, and components such as a front supporting leg and a middle supporting leg move forwards normally in the follow-up process; the left side and the right side of the supporting base are each provided with the two reverse rolling wheel sets, and the reverse rolling wheel sets are installed on the main beam, so that the stress dispersion effect on the main beam is better, and the stress of the main beam is more uniform.

The numerical control machine tool base casting machining equipment comprises a forming mold and a casting ladle mechanism, and the forming mold comprises a mold body, a buckling mechanism, an exhaust mechanism and an air extraction mechanism; the casting ladle mechanism comprises a hoisting mechanism, a casting ladle body and a casting ladle driving mechanism. On the basis that casting machining is not affected, gas generated by thermal decomposition of organic matter in coated sand can be effectively and efficiently exhausted, and therefore the defects of air holes, pits and the like of castings are prevented; and the controllability of casting construction can be improved, so that the safety risk of casting construction is reduced.

The invention relates to the technical field of photovoltaic grid connection, and particularly provides an active support control method and an active support control device for transient voltage of a transmitting end power grid of an LCC-HVDC (line commutated converter high voltage direct current power transmission) system, and the active support control method and the active support control device for the transient voltage of the transmitting end power grid of the LCC-HVDC system. Comprising the following steps: correcting an output voltage phase of a synchronization link in a virtual synchronous generator control strategy based on active power and frequency output by a network construction type photovoltaic converter, and correcting an output voltage amplitude of a voltage amplitude link in the virtual synchronous generator control strategy based on a measured value of a sending end power grid voltage; and using the virtual synchronous generator control strategy to control the network construction type photovoltaic current converter in the LCC-HVDC system containing the network construction type photovoltaic current converter. According to the technical scheme provided by the invention, the stability of photovoltaic access to the weak power grid can be improved, and the reactive power output by the converter can be automatically adjusted after the transient voltage of the sending-end power grid occurs due to the commutation failure of the LCC-HVDC system, so that the transient voltage is effectively supported, and the phenomenon of reverse adjustment of the reactive power is prevented.

The invention discloses an anti-inclination support for transformer installation, and belongs to the technical field of transformer installation protection. The anti-inclination support comprises two bases, and a transmission adjusting assembly and a mounting assembly are arranged between the two bases. The transmission adjusting assembly comprises a connecting cylinder, a bearing plate and a connecting plate. The mounting assembly comprises a second screw rod, a moving seat, a positioning plate and a mounting seat; a bearing plate is arranged between the two bases, the connecting cylinder is driven by the driving structure, and the connecting cylinder drives the bearing plate to rotate around the hinged position; connecting plates are symmetrically arranged on the two sides of the bearing plate, one ends of the connecting plates are rotationally connected with the bearing plate, sliding openings are formed in the other ends of the connecting plates, connecting shafts are arranged in the sliding openings, the connecting shafts are in threaded connection with the interiors of first threaded holes formed in the two sides of the positioning plate, and the connecting shafts are fixedly connected with the connecting plates through nuts; a triangular stable structure can be formed, the effect of stably supporting the transformer is improved, and meanwhile the situation that the transformer inclines is avoided.

The thoracolumbar vertebra fixing brace comprises a front chest supporting structure, a back supporting structure, an inflation and deflation device and a control module, the front chest supporting structure and the back supporting structure are connected and define a thoracolumbar vertebra clamping area, a front chest air bag set is arranged on the inner side of the front chest supporting structure, and the front chest air bag set is provided with a front chest pressure detection device; a back air bag set is arranged on the inner side of the back supporting structure and provided with a back pressure detection device. The chest air bag set and the back air bag set are both connected with the inflation and deflation device, and the chest pressure detection device, the back pressure detection device and the inflation and deflation device are all connected with the control module. The front chest air bag set and the back air bag set adjust the pressure value through inflation and deflation actions, the expectation of the pressure value applied to the thoracolumbar vertebra of a patient by a doctor can be achieved, standardization and scientization of the wearing and fixing tightness degree of the thoracolumbar vertebra fixing brace are facilitated, and the comfort degree of the patient is improved.

The invention discloses a cold region hydrological process simulation method based on a dynamic soil water storage capacity parameter. A static soil water storage capacity parameter Smax in an RCC-WBM model is replaced with a dynamic soil water storage capacity parameter DSmaxi related to temperature. The cold region hydrological process simulation method based on the dynamic soil water storage capacity parameters is provided on the basis of an RCCC-WBM model and a physical mechanism that air temperature changes affect the cold region soil water storage capacity parameters, and the cold region runoff process under frozen soil changes can be simulated more objectively and accurately; by utilizing the method, the change of the soil water storage capacity under the frozen soil change can be quantified, and the environmental influence evaluation work of climate change is effectively supported; by means of the method, the runoff trend of the cold region can be well simulated, and drainage basin water resource evaluation and planning management work is effectively supported.

The invention discloses a power chuck machining device capable of compensating clamping and automatically pushing materials, and particularly relates to the field of chuck machining, the power chuck machining device comprises a chuck base, a plurality of clamping jaws are arranged on the chuck base, and the multiple clamping jaws clamp and fix a thin floating disc by synchronously and radially moving along the surface of the chuck base; a supporting piece is arranged on the chuck base and makes contact with the bottom of the thin floating disc. The supporting piece is arranged to support the thin floating disc, the supporting force of the thin floating disc is effectively increased, the possibility that the thin floating disc deforms due to external force in the turning process is reduced, higher rigidity is provided, vibration and bending of the thin floating disc can be effectively restrained, the stability in the machining process is improved, and the machining precision is ensured; and by arranging the adsorption mechanism, the action of force can be more uniformly distributed, vibration is reduced, the turning quality is improved, a smoother surface is obtained, and the size precision and the surface quality in the turning process are further ensured.

The invention provides a Raney nickel electrode preparation method which comprises the following steps: 1, taking nickel powder with the particle size of 15-75 microns, nickel powder with the particle size of 75-150 microns and aluminum powder with the particle size of 15-75 microns, pouring the nickel powder, the nickel powder and the aluminum powder into a mixer, uniformly mixing without segregation phenomenon, and enabling the nickel powder, the nickel powder and the aluminum powder to respectively account for 70%-79%, 1%-10% and 20%; secondly, a plasma spraying technology is adopted, the temperature is regulated and controlled, so that the nickel powder and the aluminum powder with the particle size being 15-75 micrometers reach a molten state, and the nickel powder with the particle size being 75-150 micrometers reach a semi-molten state; spraying to a nickel net, and activating, cleaning and cutting to obtain a Raney nickel electrode; the nickel powder and the aluminum powder with different particle sizes are reasonably matched in the powder formula, the particle flying speed in spraying is properly increased, the spraying temperature is balanced, the powder with different particle sizes reaches different molten states, and therefore the large-particle nickel powder forms a good support in the coating, the bonding strength of the coating is remarkably improved, and the service life of the coating is prolonged. And the catalyst is not easy to fall off in the use process, so that the efficiency and the stability of the water electrolysis hydrogen production equipment are improved.

The invention relates to a lower limb diagnosis training system, and belongs to the field of medical diagnosis and rehabilitation training. The system comprises a detection part used for collecting data information related to the lower limbs of a patient; and the control unit is used for analyzing and processing the data information so as to calculate and obtain a diagnosis result. The control unit can calculate a neural function index based on the electroneurographic signal parameters, calculate a joint activity index based on the joint activity, calculate a muscle strength index based on the muscle strength evaluation value, and further calculate an initial lower limb function comprehensive score; the initial lower limb function comprehensive score is used as an initial diagnosis result to output a control signal of a numerical range of a combination of traction forces in multiple directions, so that electromyographic signal parameters and blood flow parameters acquired by a detection part in real time in the training process of a patient can be used by a control unit for correcting the initial lower limb function comprehensive score; and obtaining a dynamic lower limb function comprehensive score for adjusting the specific numerical value of each traction force distribution.

The invention belongs to the technical field of offshore wind power generation, and discloses a jacket foundation and a jacket foundation construction method. The jacket foundation comprises a main frame body and a supporting structure, the main frame body comprises at least three supporting legs, the at least three supporting legs are arranged around a fan tower barrel, each supporting leg comprises a plurality of connecting sections arranged in the length direction, a first connecting part is connected between every two adjacent connecting sections, the connecting section on the topmost layer is used for being connected with the fan tower barrel, and the connecting section on the topmost layer is used for being connected with the fan tower barrel. The bottommost connecting section is used for being connected with a steel pipe pile fixed to the seabed. The supporting structure is arranged between every two adjacent supporting legs in the direction surrounding the fan tower barrel, the supporting structure comprises a plurality of supporting rod sets arranged in the height direction, the supporting rod sets are connected with the first connecting parts of the supporting legs on the two sides, first pouring spaces are formed in the first connecting parts, and the first pouring spaces are filled with grouting materials. The jacket foundation has high impact-shear bearing capacity and fatigue resistance, and safety and stability of fan operation are improved.

The invention relates to the technical field of road management, in particular to an automatic road disease detection method and system based on image recognition, which improve the accuracy and efficiency of road disease detection and ensure the safety and smoothness of urban traffic. The method comprises the steps of collecting a road disease growth trend sequence; inputting the road disease growth trend sequence into a pre-trained road disease hazard assessment model to obtain a first-order road disease hazard level; in response to the situation that the first-order road disease hazard level is smaller than a preset hazard level threshold, collecting construction feature information of the position where the road disease is located; identifying and analyzing the construction feature information by using a pre-trained construction feature influence analysis model to obtain a road construction evaluation factor; evaluating and correcting the first-order road disease hazard grade by using the road construction evaluation factor to obtain a second-order road disease hazard grade; and comparing the second-order road disease hazard grade with a preset hazard grade threshold.

The invention relates to the technical field of AGVs, in particular to an AGV, a passive Chinese character'tian '-shaped support forking method and an active Chinese character'tian'-shaped support forking method, a lifting module enables lifting of a single fork arm assembly to only need a single driving source to provide effective power through the design of a driving shear fork unit and a driven shear fork unit, the structure is simplified, and the lifting efficiency is improved. The fork arm assembly is supported more stably, the shear forks in the lifting module are shorter, and the shear forks can stretch out and draw back from gaps between cross beams at the bottom of the matts, so that the effect of forking the matts is achieved; in the forking process, a shear fork of the lifting module is supported by the ground, supporting is more stable through the structure, additional balance weights do not need to be added to an AGV body, and the size and the weight are smaller; through the design of the portal assembly, the telescopic movement of the multiple fork arm top plate modules connected with the portal assembly is synchronous, the telescopic movement of the multiple fork arm assemblies can be achieved only through one power source, and the cost is reduced.

The invention relates to a carbon plate for sports shoes. From a sole to the top, the carbon plate sequentially comprises a first fiber layer, a second fiber layer and a third fiber layer, the second layer is a fiber layer made of 0-degree unidirectional polyimide fiber cloth; the third layer is an arch reinforcing sheet made of a poly-p-phenylene terephthamide material; the carbon fiber unidirectional belts adopted by at least two carbon fiber layers are symmetrically arranged in the forward direction and the reverse direction, and the other carbon fiber layer is made of 90-degree carbon fiber unidirectional belt materials. The carbon fiber plate has the advantages that the reinforcing piece is arranged at the foot arch, the structural strength of the carbon fiber plate at the weak position of the foot arch can be improved, in addition, the protruding reinforcing ribs can further improve the rigidity of the foot arch, and therefore the structural strength of the whole carbon plate is improved, and the problem that the service life is damaged due to excessive bending of the carbon plate is solved.

The invention belongs to the technical field of fuel cells, and particularly relates to a fuel cell centrifugal air compressor irreversible loss prediction method and system, and the method comprises the steps: collecting performance data based on a fuel cell centrifugal air compressor comprehensive performance test platform, and building and verifying a multi-physics coupling CFD simulation model; defining an irreversible loss type and related structure parameters, constructing an integrated CFD simulation framework, generating a parameter combination table through an orthogonal test, and performing simulation calculation; an RL-GHEM method is provided, the weight and combination strategy of a base model are optimized, linear and nonlinear combination modes are dynamically switched, and irreversible loss prediction models under different working conditions are constructed. The hybrid integrated model based on reinforcement learning guidance is provided, the model combination strategy is dynamically optimized through the reward mechanism, the base model with the optimal performance is optimized, the prediction precision, stability and robustness are improved, precise prediction of the irreversible loss of the air compressor is achieved, and the problem that in the prior art, the prediction precision is insufficient under variable working conditions is solved.

The invention discloses lysine cross-linked hyaluronic acid gel as well as a preparation method and application thereof. The preparation method of the lysine cross-linked hyaluronic acid gel comprises the following steps: mixing a hyaluronic acid substance, DMTMM and lysine, and carrying out a cross-linking reaction to prepare the lysine cross-linked hyaluronic acid gel, the hyaluronic acid substance is added in the form of a hyaluronic acid substance solution, and the solution comprises a hyaluronic acid substance with the weight-average molecular weight of 70WDa-180WDa and a buffer solution; the hyaluronic acid substance accounts for 3-5% of the hyaluronic acid substance solution in percentage by mass; the mass ratio of the DMTMM to the hyaluronic acid substance is (0.74-1.1): 1. The cross-linked hyaluronic acid gel is prepared by taking lysine as a cross-linking agent, so that the prepared gel is ensured to have ideal biocompatibility and use safety. The gel prepared by the method also has ideal mechanical properties, and the degradation speed meets the requirements of injection filling materials.

The present invention discloses a step-by-step rock drill with a drill withdrawal device, including a rock drilling main unit, a guide rail, and a drill rig bearing slide, wherein a first locking device is provided between the drill rig bearing slide and the guide rail; a drill withdrawal device is also provided on the drill rig bearing slide; the drill withdrawal device includes a locking slider and a driving mechanism with a reciprocating output motion, the driving mechanism is connected between the drill rig bearing slide and the locking slider, and the locking slider can only be longitudinally moved on the drill rig bearing slide; the first locking device is provided between the locking slider and the guide rail. The beneficial effect of the present invention is that the drill bit can be easily withdrawn when the drill is stuck, and the length of the drill rig guide rail can be adjusted according to the footage, and the front end of the drill rig is firmly supported, and after the drilling is completed, the drill rig can be withdrawn smoothly as a whole. It has complete functions, is conducive to realizing automatic control, provides guarantee for the mechanized operation of tunnel construction, and can effectively reduce tunnel over-excavation, improve construction efficiency, and reduce construction costs.

The invention provides a motor stator assembly and rotor assembly assembling tool and an assembling method thereof.The motor stator assembly and rotor assembly assembling tool comprises a stator body and a rotor body matched with the stator body and further comprises a supporting frame, a first air cylinder is arranged on the supporting frame, and the output end of the first air cylinder is rotationally connected with an extrusion rod; the pressing unit is arranged on the supporting frame, and the pressing unit comprises a supporting cover matched with the extrusion rod; and a clamping unit. According to the method for assembling the stator assembly and the rotor assembly of the motor, the pressing unit is utilized, the stator body is fixed to the supporting frame through the clamping unit, meanwhile, the rotor body is fixed to the supporting cover through the clamping block, and the first air cylinder abuts against the supporting cover through the extrusion rod to slide in the axial direction so that the rotor body can be assembled into the stator body; the supporting effect on the rotor body is improved through the clamping blocks, and the rotor body is prevented from colliding with the stator body due to magnetic attraction in the assembling process.

The invention belongs to the technical field of medical instruments, and particularly relates to a dense net support. The dense net support comprises a front fixing section, a blocking section and a rear fixing section, and the blocking section is located between the front fixing section and the rear fixing section. The plugging section is connected with the front fixing section through a front connecting piece, and the plugging section is connected with the rear fixing section through a rear connecting piece; the plugging section is used for plugging an aneurysm position of a blood vessel, the plugging section sequentially comprises an inner layer part, a middle layer part and an outer layer part from inside to outside, the inner layer part adopts an inner layer metal stent, and the outer layer part adopts an outer layer metal stent. The dense net stent can adjust hemodynamics more accurately, and it is ensured that the blood flow of healthy blood vessels is not affected while the aneurysm is closed; the sealing effect of the aneurysm is ensured, and thrombosis is well promoted, so that blocking and healing of the aneurysm are promoted; and the endothelialization process of the stent is facilitated, so that the success rate of fusing the stent into the blood vessel is improved, the effect of completely sealing the aneurysm opening is achieved, and the recurrence risk is reduced.

The invention provides a processing method of an ultrathin plano-convex lens, which comprises the following steps: fixing a blank on a parallel disc, and carrying out rough grinding processing on a first surface to obtain a first rough grinding blank; the first rough grinding blank is polished, and a first rough grinding and polishing blank is obtained; the first surface of the first rough grinding and polishing blank is fixed to a parallel disc, and rough grinding machining is conducted on the second surface of the first rough grinding and polishing blank to obtain a second rough grinding blank; the second rough grinding blank is polished, and a second rough grinding and polishing blank is obtained; the second surface of the second rough grinding and polishing blank is fixed to an optical cement disc, and finish machining is conducted on the first surface of the second rough grinding and polishing blank to obtain a first finish machining lens; the first surface of the first finish machining lens is fixed to an optical cement disc through a base plate, finish machining is carried out on the overall appearance of the first finish machining lens to form a spherical surface, and the plano-convex lens is obtained. The problem that an existing ultra-thin plano-convex lens part is thin in size and prone to deformation, and consequently products do not reach the standard is solved.

The invention belongs to a new energy automobile body structure in the technical field of new energy automobiles. The outer frame beam (4) and the lower bottom plate (5) are of an integrated structure made of aluminum alloy, a trapezoidal structure or a wedge-shaped structure is arranged on the outer side of the outer frame beam (4), a protruding part (10) of the threshold inner plate (9) abuts against the upper portion of the outer frame beam (4), an inner plate inclined face part (11) abuts against an outer frame inclined face part (7), a bolt bush (13) is arranged on the inner side of the inner plate inclined face part (11), and a threaded sleeve (14) is arranged on the inner side of the outer frame beam (4). A bolt (15) is connected with the threaded bushing (13) and the threaded sleeve (14), and an internal arrangement beam (6) is arranged in the lower shell (2) under the seat cross beam. According to the new energy automobile body structure, the structure is simple, the space utilization rate is increased, meanwhile, the bending torsion and collision performance of an automobile body is improved, meanwhile, the safety performance of side collision and side column collision is improved, and the torsional rigidity and the side collision performance of the automobile body are improved.