36results about How to "Safe by design" patented technology

The invention relates to the technical field of energy storage converter fault detection, in particular to a fault detection circuit and method for an AC grid-connected relay of an energy storage converter. A primary relay is removed, a group of detection relay loop is added on the side of an alternating current grid-connected relay and a converter, and the detection relay loop is composed of a detection relay and a detection loop resistor. In the fault detection link of the alternating-current grid-connected relay, the voltage of the detection relay loop is judged by sequentially closing the detection relays of the detection relay loop, so that the short-circuit detection of the alternating-current grid-connected relay is realized. And then the detection relay loop is disconnected, the AC grid-connected relays are sequentially closed, and the voltage of the detection relay loop is judged, so that open circuit detection of the AC grid-connected relays is realized. The added detection relay loop is simple in structure and small in occupied space, the design cost of the alternating current grid-connected relay can be effectively reduced, and the overall structure utilization rate and the power density of the energy storage converter are improved.

The invention belongs to the technical field of flight training platforms, and provides a flight skill enhancement training supporting platform fusing virtual imaging and motion capture, the flight skill enhancement training supporting platform comprises a real object cabin and a virtual device, the real object cabin provides a cabin real object part for airplane training and comprises a cabin body, a flight seat and a control component, the virtual device is arranged in the cabin body, and the flight seat is arranged in the cabin body. And providing a virtual cabin based on a virtual scene for the flight trainee, wherein the virtual cabin comprises a simulation flight picture and a cabin scene of a non-cabin real object part. The system is integrally designed on the basis of a virtual-real combination technology, an XR video straight-through acquisition motion capture technology and a commercial shelf product building platform mode, the technology is safe and reliable, implementation is convenient and feasible, and use and maintenance guarantee are simple and convenient. By constructing a platform comprising an XR head-mounted display and a computer component, flight skill enhanced training fusing virtual imaging and motion capture is realized. Verification shows that the design is reliable and effective, and has great significance for realizing flight skill enhancement training with low cost and high interactivity combined with virtuality and reality.

The invention discloses a data-driven building multi-room fire horizontal spreading whole process prediction method, which comprises the following steps: determining a plane structure physical model of a fire spreading scene, and dividing a spreading area; a sample set is constructed, a C-I-WOA-BP neural network based on the chaos adaptive whale algorithm is constructed, network parameter configuration is optimized, and the ignition time of a room in an area closest to a fire source room is predicted; adding the ignition time of the ignited area room into a sample set as input of a neural network, and predicting the ignition time of the next area room; and a spreading path is obtained according to the time sequence of the fire spreading from the on-fire room to other rooms. According to the method, the accuracy and efficiency of fire prediction are improved, the requirements for a real building fire horizontal spreading scene in actual structure fire resistance research and fire rescue are met, and a safer and more effective fire emergency response scheme can be designed.

The utility model discloses an automatic electric lifting escalator and an installation structure thereof. The automatic electric lifting escalator comprises a winch, a track and a control system used for controlling the winch. A pair of rails are arranged in an inclined mode, the longitudinal section of each rail is of a U-shaped structure with an outward opening, a sliding block is arranged in a groove of each rail, a rope is connected to the upper end of each sliding block, and the other end of each rope penetrates out of the groove upwards along the groove of the corresponding rail and then is connected with a winding roller of a winch. A winding groove matched with a rope is formed in a winding roller of the winch, the rope is arranged in the winding groove in a vortex winding mode through the winding groove, and non-metal noise reduction discs are arranged on the end faces, making contact with the rope, of the two sides in the winding groove respectively; vertical plates are connected to the outer sides of the sliding blocks, and a pedal is connected between the two vertical plates. According to the utility model, the lifting of the pedal is smoother and more stable, noise during working is avoided, and the use experience feeling of a user is improved.

The utility model provides a glass curtain wall and stone curtain wall inclined closing-up node which is characterized in that an aluminum alloy stand column is fixed with a cross beam through a stainless steel cylindrical pin, and hollow tempered laminated glass is fixed on the aluminum alloy stand column through an aluminum alloy pressing plate and is fixed with an aluminum alloy glass auxiliary frame through a silicone structural sealant; the aluminum alloy glass auxiliary frame is fixed on the aluminum alloy cross beam; galvanized angle steel is further fixed to the aluminum alloy stand column through galvanized angle steel adapters, the aluminum alloy stone hanging seat is fixed to the galvanized angle steel, the stone panel is connected to the aluminum alloy stone hanging seat in a hung mode through aluminum alloy back bolt hanging pieces, and the gap between the stone panel and the glass curtain wall system is filled with sealant. The section size and the thickness of part of materials are changed, the strength and the mechanical property of components are improved, hanging measures are adjusted, so that the vertical keel serves as a structural support of a glass curtain wall and a structural support of a stone curtain wall, the problem of curtain wall design is solved, and indoor space attractiveness and comfort are not affected.

The utility model discloses an under-pressure sampler at an output end of a Christmas tree of an oil and gas well, relates to the technical field of oil and gas exploitation, and aims to solve the problems of insufficient sealing, complicated operation, low automation degree and poor safety in the prior art. The sampler comprises a three-way connector, a sampling assembly, a gas separator, a gas-liquid separator, an on-off piston, a manual control opening and closing device and a controlled sampling core. The three-way connector is communicated with a Christmas tree high-pressure valve, and efficient sealing is achieved; the manual control opening and closing device accurately controls opening and closing of the on-off piston according to the lever principle; the controlled sampling core is used for adjusting pores between the porous disc and the porous seat, so that the sampling efficiency is adjusted. Due to the arrangement of the gas separator and the control valve, gas and solid-liquid separation is guaranteed. The device realizes timing, quantitative and constant-efficiency sampling control, has high automation degree and safety, is simple, convenient and reliable to operate, and is suitable for different sampling requirements.

The invention discloses an intelligent sprinkling dust control system and method for a mining explosion-proof vehicle, and relates to the technical field of mine environment governance, and the intelligent sprinkling dust control system comprises a fixed monitoring module which is arranged in a coal mine underground roadway and is used for carrying out multi-point simultaneous monitoring on the air dust content of the coal mine underground roadway; the concentration of particulate matters with different particle sizes is calculated and continuously recorded to form a dynamic database, a dust concentration change rule is obtained and sent to the vehicle-mounted mobile control module, and the vehicle-mounted mobile control module arranged on the coal mine explosion-proof vehicle determines a working mode according to the dust concentration change rule; and operation data and surrounding environment data of a coal mine explosion-proof vehicle are also collected, control information is generated based on a spray self-adaptive strategy, and dust control over an underground coal mine roadway is achieved. According to the scheme, real-time monitoring and intelligent watering control of the dust concentration of the underground operation environment are achieved, the working environment is remarkably improved, excessive water consumption can be avoided, and waste of water resources is reduced.

The invention relates to the technical field of melt filtering devices, in particular to a melt filtering device design method which comprises the following steps: S1, determining the structure of a melt filtering device; s2, performing strength and sealing performance calculation according to design pressure, design temperature and material parameters, calculating the thicknesses of a barrel, an upper end cover and a lower end cover, and selecting a proper sealing gasket; s3, calculating the strength of the supporting disc according to a pressure difference limit value set by a process system, and determining the size of the supporting disc; s4, calculating the pre-tightening compression amount of the sealing gasket, and calculating the depth and width of a mounting groove of the sealing gasket; s5, setting and checking the sizes and types of an inlet connecting pipe and an outlet flange according to the set pipeline load; s6, according to the heat transfer coefficients and heat loss requirements of different heating media, the equivalent heat preservation thickness is calculated, and the size of a heat preservation jacket is determined; the invention provides a method for designing a melt filtering device, which is simple, practical and quick and can ensure that a design calculation result is safe and economical.

The present invention discloses an adjustable pressure balloon expander for a knee joint, comprising a minimally invasive puncture balloon unit and an adjustable pressure injector unit connected to and injecting a fluid into the minimally invasive puncture balloon unit, wherein the adjustable pressure injector unit is connected to the minimally invasive puncture balloon unit via an extension tube; the minimally invasive puncture balloon unit comprises a puncture spindle tube for puncturing into the knee joint, a through hole is provided at the side wall of the end of the puncture spindle tube, and the periphery of the through hole is coated with a soft balloon for opening under the action of the injected fluid to expand the knee joint compartment. The adjustable pressure balloon expander for a knee joint provided by the present invention is simple to operate and easy to use, and is convenient for expanding the knee joint compartment through a minimally invasive incision, can accurately control the supporting force, disperse the stress of the supporting part, and can be operated within the safe range of the articular cartilage, meniscus and ligament, thereby reducing the difficulty of knee joint surgery, improving the efficiency of surgery and accelerating postoperative recovery.

This invention discloses a bridge pot bearing and control system based on system conversion. A first bearing body and a second bearing body are stacked from top to bottom. The first bearing body has a first mounting plate, and an adjustment component is installed below the first mounting plate. The second bearing body has a second mounting plate, and a test component is installed on the second mounting plate. The test component connects with the adjustment component. While performing pressure testing, the test component, in conjunction with the adjustment component, enables the conversion between three states: fixed pot bearing, unidirectional movable pot bearing, and bidirectional movable pot bearing. This invention monitors the stress on the bearing in real time, calculates the bridge shear force based on the reaction force, and derives the bridge shear force amplification factor under dynamic loads, thus improving bridge design methods and making bridge design safer and more reliable. It can realize the functions of a fixed bearing, a unidirectional movable bearing, or a bidirectional movable bearing, and achieve mutual conversion between bearing types.

The invention discloses a method for testing and evaluating the bending resistance and overall bearing capacity of a hoisting pipe, which comprises the following steps of: mounting a loading device above a hoisting pipe to be detected of drilling equipment, connecting the hoisting pipe to the loading device through a pull rod and an annular lasso, fixing the pull rod on a loading oil cylinder of the loading device through a locking nut, and loading the hoisting pipe on the loading oil cylinder; then the annular lasso is adjusted to a preset position, the hoisting pipe is loaded through a hydraulic system, stress data of the hoisting pipe is monitored and collected through a strain gauge in the middle of the hoisting pipe in the loading process, finally, a measurement result is evaluated through an evaluation method, and the bending resistance and the overall bearing capacity of the hoisting pipe are judged according to the evaluation result. The problems that an existing hoisting pipe loading test method is low in detection efficiency, the counterweight selection and placement are tedious, the loading error is large, and the hoisting pipes which cannot be subjected to pairwise loading test on large-span or large and heavy parts with obstacles in the middle on drilling equipment are tested, evaluated and automatically loaded are solved.

The invention discloses a safety guarantee method for an intelligent driving vehicle. The safety guarantee method comprises the steps that S1, the control behavior of a driver is detected; s2, whether the vehicle breaks down or not is diagnosed according to the braking system and the motor torque; s3, further determining whether the intelligent driving vehicle is out of control due to vehicle machine faults; and S4, when the vehicle machine is judged to have the fault problem, forcibly switching the manual driving mode. The invention further discloses an intelligent driving vehicle safety guarantee device. According to the method, the intelligent driving vehicle can exit the vehicle automatic driving mode when system faults such as software and hardware occur in the automatic driving process, safety accidents caused by out-of-control of the vehicle can be avoided, and the out-of-control situation of the intelligent vehicle can be effectively handled.

The invention discloses a competitive assembled maze. The maze is composed of a base plate, a baffle assembly, an invisible door assembly and a rotating door assembly. The chassis is formed by splicing a plurality of square modules, and the edge of each module is provided with an insertion hole, so that the components can be conveniently connected and fixed; the baffle, the invisible door and the revolving door assembly can be flexibly combined into various labyrinth layouts by being inserted into the insertion holes of the base plate; the invisible door can be turned over to hide the channel, and the revolving door realizes a rotating function through the turntable, so that the complexity and interestingness of the labyrinth are increased; the invention aims to create a novel sports item which can meet the requirements of modern competitive sports and meet the diversified requirements of people on healthy and recreational life.

The invention belongs to the technical field of biology, and relates to a construction method and application of a mouse exogenous gene expression model based on an adenovirus vector. The exogenous gene is delivered through the adenovirus vector, the exogenous gene is subjected to site-specific integration to the specific site of the mouse target cell by using the double recombinase, the efficiency is high, the integration site and copy number are controllable, the safety is good, various function acquired variations can be efficiently modeled, and the method can be applied to establishment of a tumor model and research of precision medical treatment.

This application provides an automotive seat and a vehicle having the same. The automotive seat includes: a headrest assembly; and a monitoring component detachably connected to the headrest assembly. The monitoring component has a working position that engages with the headrest assembly and a detachable position that separates it from the headrest assembly. The monitoring component is used to detect and generate health status data of a target object. By applying this technical solution, the detachable monitoring component and headrest assembly ensure both comfort and monitoring accuracy within the vehicle environment. It also allows the user to carry and use the monitoring component separately after leaving the vehicle. The monitoring component can store monitoring data and synchronize with the user's smart devices in various environments, achieving continuous and comprehensive health data monitoring. This solves the problem of traditional in-vehicle health monitoring devices not being detachable from automotive seat headrests in the prior art.

The invention discloses a connector which comprises a plug and a socket. The plug is provided with a first insertion core, and the first insertion core comprises an insertion core main body and at least one independent pin seat and / or at least one first modular insertion part; the insertion core main body is provided with at least one independent installation cavity and / or at least one module installation cavity. The independent pin seat is detachably mounted in the independent mounting cavity, and the modular plugging part is detachably mounted in the modular mounting cavity; the independent pin seat and the first modular plugging part are internally provided with a first type of pins. The socket is provided with a second insertion core matched with the first insertion core, and the second insertion core is provided with a second type of insertion pins matched with the first type of insertion pins; when the plug is plugged into the socket, the first type of pins and the second type of pins are connected and conducted. According to the invention, various plugging wiring modes are supported, various scene requirements are met, the space structure is compact, and the design is safe and reliable.

The present invention discloses a handheld fan lamp, comprising: a handle with a cavity inside; a lamp head arranged on the handle; and a wind power component arranged in the cavity of the handle; an air duct is formed in the handle, and an air inlet and an air outlet are arranged on the handle, and the air inlet and the air outlet are connected to the air duct; the wind power component is located in the air duct, and a wind guide surface is formed in the air duct corresponding to the air outlet, and air is supplied from the air outlet through the wind power component. The product of the present invention is small in size, light, and easy to carry outside, which is suitable for the current pursuit of light and intelligent furniture products by young people; and the product has fan and lighting functions, and has various uses, which has greater advantages than traditional handheld fans. The hidden impeller structure of the present invention is safer in design, and the wind generated is more stable than that of ordinary fans. The wind blown out is comfortable and soft, and is more suitable for people to use natural wind.

The invention relates to the technical field of geographic survey, and discloses a block chain unmanned aerial vehicle telemetering data processing method, which comprises the steps of monitoring, conditioning and collecting different telemetering object data through multiple points, and constructing different target member block networks through a multi-layer association topology network according to the different telemetering object data, jointly constructing an earth surface three-dimensional model by using different target member block networks; according to different target member block networks in the earth surface three-dimensional model, automatically obtaining other telemetering object data in the target member block networks, analyzing change states of the other telemetering object data at a previous moment and a current moment, and designing a mathematical model for the other telemetering object data by taking a mathematical function as a guide; and outputting the surface change state of the telemetering object to the outside. The telemetry data can be deduced and forecasted, so that the earth surface condition can be known in advance.

The invention relates to a high-security batch image steganography method, which comprises the following steps of: randomly generating n chromosomes, sequencing input images according to the n chromosomes, and generating n groups of images; combining each group of images into a large image, namely a carrier image, and embedding secret information into the large image to obtain n pairs of carrier images and secret images; calculating the similarity between each pair of carrier image and secret image, and selecting the chromosome with the highest similarity as an optimal individual; cloning an optimal individual for t times, selecting n-t individuals from the population according to a similarity measurement value of each pair of carrier images and secret images, performing crossover and mutation operation to obtain n-t optimized individuals, and finally combining t optimal clones with the n-t optimized individuals to form a next-generation population; and repeating selection, crossover and mutation operations, recording the optimal individual of each generation, and taking the chromosome with the highest similarity measurement value as the output of an image stitching scheme ISS.

The utility model discloses a coking ammonia distillation system capable of deeply utilizing flue gas waste heat of a coke oven, which comprises an ammonia distillation tower and a tubular furnace, an ammonia water heater is arranged on the tubular furnace in parallel, and a heat exchange channel of the ammonia water heater is connected with a riser waste heat system. The ascending pipe waste heat system comprises a steam pocket and an ascending pipe heat exchanger for carrying out heat exchange on coke oven flue gas, the steam pocket is respectively connected with heat exchange channel inlets of demineralized water and an ammonia water heater, and a heat exchange channel outlet of the ammonia water heater is connected to the steam pocket after passing through the ascending pipe heat exchanger. According to the utility model, the additionally arranged ammonia water heater is connected with the tube furnace in parallel, and the steam pocket, the riser heat exchanger and the ammonia water heater form a circulating water loop for recovering and utilizing the flue gas waste heat of the coke oven, so that the deep utilization of the flue gas waste heat of the coke oven can be realized, the consumption of coke oven gas required for heating the tube furnace is reduced, and energy conservation and consumption reduction are realized.

The present invention proposes a multi-objective branch horizontal well trajectory design method, which belongs to the technical field of oil extraction and processing industry, and includes the following steps: S1: Based on geological characteristics and development goals, a wellbore trajectory scheme is formed; S2: A thin reservoir fishbone branch wellbore pressure drop model, a formation model, and a branch well productivity model are constructed; S3: A drill friction torque analysis is performed on the wellbore trajectory scheme, and the well inclination angle and the build-up rate are optimized; S4: The safety of the main wellbore horizontal section screen pipe under different well inclination angles and target front distances is analyzed, and the influence of different branch angles on the wellbore stability is analyzed by finite element analysis; S5: Multi-objective optimization is performed on the wellbore trajectory in the wellbore trajectory scheme, and the design parameters in the wellbore trajectory scheme are optimized. The present invention adjusts the wellbore trajectory parameters according to the analysis results, ensures the safety of the drill tool during the running-in process, reduces the risk of accidents during the drilling process, and effectively improves the drilling efficiency and mining benefits.

The application discloses a data-driven building multi-room fire horizontal spread whole process prediction method, comprising the following steps: determining a plane structure physical model of a fire spread scene, and dividing a spread area; constructing a sample set, constructing a C-I-WOA-BP neural network based on a chaotic adaptive whale optimization algorithm, optimizing network parameter configuration, and predicting the ignition time of the room in the area closest to the fire source room; adding the ignition time of the room in the already ignited area into the sample set as the input of the neural network, and predicting the ignition time of the room in the next area; and obtaining a spread path according to the time sequence of the spread of the fire from the room where the fire breaks out to other rooms. The application improves the accuracy and efficiency of fire prediction, meets the demand for real building fire horizontal spread scenes in actual structure fire resistance research and fire rescue, and is helpful for designing a safer and more effective fire emergency response scheme.

The utility model discloses a lifting dustproof device of a leather roller coater, a pulley block is arranged at the front part of a dustproof cover, a traction steel wire rope penetrates through the pulley block and is connected to an electric hoist, and the electric hoist is fixed on a cross beam; anti-falling hinges are fixed on the dustproof cover and the cross beam; the anti-falling steel wire rope is mounted between the two anti-falling hinges; a rotating hinge is installed on the rear portion of the dust cover and connected with a fixing support, and the fixing support is connected with the cross beam. One end of the dust collection hose is fixed on the dust cover, and the other end is fixed on the dust collection fan. According to the utility model, local negative pressure can be generated in a working area of the roller coater to suck some small-particle dust and scurf in the surrounding environment into the dust cover, so that the problem that fine particles are mixed in leather is effectively solved. The design is practical and safe, the manufacturing cost is low, and the problem of roller replacement can be solved only by single-side lifting. In addition, in the aspect of safety, the situations of sudden falling, equipment damage and personnel injury are also considered, and an anti-falling structure is installed.

The present invention relates to the technical field of unmanned aerial vehicle path planning, and provides a method, medium and device for online path planning of a fixed-wing unmanned aerial vehicle cluster, the method comprising: S1, obtaining fixed-wing unmanned aerial vehicle cluster information, no-fly zones and electronic fences; S2, calculating the flight safety distance based on the fixed-wing unmanned aerial vehicle cluster information; S3, obtaining the flight segments that need to be planned online according to environmental changes using the flight safety distance and the no-fly zone; S4, performing online path planning on the flight segments that need to be planned online based on the flight safety distance to form a new route; S5, correcting the new route, and judging whether the online path planning task is completed according to the correction result, and adjusting the formation spacing or formation formation if it is not completed, and returning to S2. The present invention can solve the problem that the fixed-wing unmanned aerial vehicle cluster needs to complete the secondary route planning online within a limited time on the airborne end when the fixed-wing unmanned aerial vehicle cluster flies in formation in a designated airspace and there are environmental changes such as the generation of a new no-fly zone.

The present invention relates to a distribution network touch state alarm system, comprising: a detachment judgment device, which is used to issue a first judgment instruction when it is judged that the conductor side insulator of the pole tower of the distribution network line has not fallen off, otherwise, it issues a second judgment instruction; a touch alarm mechanism, which is used to execute an alarm action corresponding to the illegal touching of the insulator by the operating electrician before the conductor side insulator is detached when the convolutional neural network model is used to analyze the handover between the insulator and the operating electrician. The distribution network touch state alarm system of the present invention is intelligently designed, safe and reliable. Since it can intelligently analyze whether the insulator and the operating electrician have been handed over based on various on-site visual information, and when the handover between the insulator and the operating electrician is intelligently analyzed, the alarm action corresponding to the illegal touching of the insulator by the operating electrician before the conductor side insulator is detached is executed, thereby providing safety warning information for the safe operation of the operating electrician.

The utility model discloses a liquid medicine filling valve suitable for an extracorporeal circulation pipeline, which relates to the technical field of valve bodies and comprises a three-way pipe body and a cover body structure assembled at the top of the three-way pipe body. The cover body structure comprises an extension pipe and a housing part communicated with the bottom of the extension pipe; a mounting ring, a plurality of runner holes formed in the circumferential direction of the mounting ring and a one-way plug body structure assembled in the mounting ring are arranged on the inner wall of the extension pipe; the one-way plug body structure comprises a plug body, an upper limiting part and a lower limiting part, wherein the upper limiting part and the lower limiting part are arranged on the top and the bottom of the plug body respectively. A first step part is formed by the lower surface of the upper limiting part and the outer wall of the plug body, and a plurality of elastic supporting columns are arranged on the first step part. According to the utility model, on the premise of not influencing the work of the extracorporeal circulation pipeline, the one-way plug body structure is arranged, so that the convenience is provided for filling medicines into the extracorporeal circulation pipeline, the design is safe, and the leakage risk is low.

The present invention belongs to the field of geological engineering technology, and discloses a sampling device for geological engineering water body detection, including a top cover, a pull ring welded on the top of the top cover, a bolt installed on the outer thread of the top cover, and a sampling tube and an outer tube located at the bottom of the top cover are pressed and installed by the bolts, the sampling tube is located in the middle of the inner cavity of the outer tube, and a water inlet groove is opened on the front of the outer tube. This device prevents the filter plate and the sealing plate from rotating before the sampling depth is reached. When the filter plate and the sealing plate rotate with the driving of the sealing column and the limit block, the effective filtering area on the surface of the filter plate becomes larger and larger. This design allows the filter surface exposed in the early stage of the rotation of the filter plate to completely consume large-volume impurities and small-volume impurities affected by water pressure in the water body, and at least half of the filter surface exposed in the subsequent rotation of the filter plate can perform effective filtering work.

The invention relates to the technical field of civil engineering shock insulation and test methods, and discloses a variable vertical force shock insulation rubber support shear performance test method and a mechanical model.The method comprises the steps that first vertical pressure F1 is kept unchanged, a horizontal hydraulic servo loader is adopted to apply horizontal displacement to a shock insulation support body in the first direction, and a second vertical pressure F1 is adopted to apply horizontal displacement to the shock insulation support body in the second direction; when the shock insulation support body is loaded to the first displacement X1, the first vertical pressure F1 is gradually and linearly reduced to the second vertical force F2 according to the horizontal displacement X2-X1; the first vertical pressure F1 is kept unchanged, a horizontal hydraulic servo loader is adopted to apply horizontal displacement to the seismic isolation support body in the second direction, when the seismic isolation support body is loaded to third displacement X3, the first vertical pressure F1 is gradually and linearly reduced to second vertical force F2 according to the horizontal displacement X4-X3, and when the seismic isolation support body is loaded to third displacement X3, the first vertical pressure F1 is gradually and linearly reduced to the second vertical force F2 according to the horizontal displacement X4-X3; and finally, a variable vertical force shock insulation rubber support shear hardening model is provided. According to the invention, more accurate test data can be provided, and the actual stress state of the shock insulation support can be reflected more truly when an earthquake occurs.

The mechanical analysis method for the wind power concrete tower drum under the conditions of different wind speeds and loads comprises the following steps: S1, constructing a stress schematic system of the wind power concrete tower drum, and performing mechanical stress analysis on the tower drum through a three-dimensional coordinate axis; s2, building a tower body wind load calculation model of the wind power concrete tower; s3, constructing tower top wind load models of the wind power concrete tower drum under different working conditions, judging a required working condition model, and performing mechanical analysis simulation on the tower top of the wind power concrete tower drum by using the tower top wind load calculation model of the wind power concrete tower drum under different wind speeds and load conditions; and S4, constructing a load combination calculation model under different wind speeds and load conditions, and constructing a mechanical analysis model of the wind power concrete tower drum by using the load combination calculation model. According to the method, the performance of the wind power concrete tower drum under various design working conditions is comprehensively considered, various working conditions and the dynamic response aspect are comprehensively considered, and a new method is provided for a mechanical analysis method of the wind power concrete tower drum.

The invention discloses a bridge structure extension structure which comprises an old bridge deck slab and an extension bridge deck slab installed at the outer end of the old bridge deck slab, a connecting assembly is installed between the old bridge deck slab and the extension bridge deck slab, an expansion joint is reserved between the old bridge deck slab and the extension bridge deck slab, and a plurality of bridge pier caps are arranged at the bottoms of the old bridge deck slab and the extension bridge deck slab in the length direction. A plurality of main bearing beams are transversely and uniformly arranged between the bottoms of the old bridge deck slab and the extended bridge deck slab and the bridge pier caps at intervals, a plurality of pairs of auxiliary supporting beams are transversely and uniformly arranged between the main bearing beams and the bottoms of the old bridge deck slab and the extended bridge deck slab at intervals, and each pair of auxiliary supporting beams are connected and fixed through waist steel plates matched with bolts. According to the bridge structure extension structure and the construction method, construction convenience is fully considered, modular assembly is carried out through standard connection modes such as bolts and insertion holes, the site construction difficulty is reduced, the construction efficiency is greatly improved through the prefabricated design of the connecting assemblies, bridge extension operation can be completed more quickly, and the construction time is saved.