26 results about "Safety design" patented technology

The invention provides an ECU safety design method and device, a medium and a vehicle. The method comprises the steps of obtaining a knowledge graph; the knowledge graph comprises a plurality of entities and entity relationships among the plurality of entities; the plurality of entities include vehicle functions of the ECU of the vehicle, security levels of the vehicle functions, and security mechanisms; determining a target security mechanism matched with the function link from the knowledge graph according to the function link of the ECU; the function link is used for realizing the vehicle function of the ECU; the function link is determined according to an original system architecture diagram of the ECU; the knowledge graph comprises a target security mechanism; and adding the target security mechanism in the original system architecture diagram to obtain a target system architecture diagram. According to the embodiment of the invention, the accuracy of ECU safety design can be improved.

The application discloses a kind of super-long pile buckling instability test methods under the action of multiple load combination, comprising: through special data comprehensive computing platform, the multiple load parameters of stratum physical mechanics characteristics, pile structure geometry and axial pressure, lateral thrust and torque are collected, and the interaction relationship of clear parameters is handled by multiple load pile buckling coupling model;Using non-uniform load pile buckling deformation prediction model to deduce the deformation trend of each section of pile body, with the help of super-long pile buckling instability tracing analysis algorithm, locate the key parameters and action interval of instability;Through platform dynamic capture actual deformation and stress distribution data, after comparing and calibrating with deduced result, the critical state parameters of buckling instability and full-range deformation law are optimized and output.The method realizes the accuracy and systematicness of test under multiple load and complex stratum condition, and provides reliable technical support for super-long pile engineering safety design.

The invention discloses a hydraulic engineering safety design parameter correction method based on big data service, and relates to the field of hydraulic engineering, and the method comprises the steps: building a plan splitting platform and a design safety value map, and calculating a design safety offset through the design safety value map; the plan splitting platform splits the security target data to form multiple stages of design data; forming collaborative design demand data containing priority weights; introducing a plurality of engineering design priority weights to obtain collaborative design data; and comparing the initial design parameter data with a triggering parameter correction step to obtain a final design plan parameter. Through constructing a three-dimensional design safety value map, space-time visual monitoring of cross-engineering production nodes is realized, and then an engineering personalized regulation factor is introduced, so that the accuracy of key node offset early warning is effectively improved, and meanwhile, through a design replacement mode, abnormal design is modified, so that quantitative decision is automatically realized.

This invention discloses a space hatch system and its rapid leak rate detection method, belonging to the field of space hatch reliability and safety design technology. The hatch system includes a sealed hatch, a pressure point switch, and a rapid leak detector. An inner and outer sealing ring are fitted onto the end face of the sealed hatch body. When the hatch is closed, the two sealing rings contact and press against the sealing surface of the hatch frame, forming a sealed cavity between the two sealing rings and the sealing surface of the hatch frame. The pressure point switch is located on the hatch frame and detects whether the hatch opening and closing action is complete. The rapid leak detector inflates the sealed cavity and performs a leak rate test to obtain the sealing condition of the sealing rings. Through the application of this invention, the completion of hatch action can be reliably detected, and the hatch's sealing performance can be quickly determined, providing a quantitative basis for whether the hatch can be reliably closed.

The present application relates to the technical field of ship lift in hydraulic engineering, and particularly relates to a full-balanced steel wire rope hoist type ship lift emergency braking checking method and system. In view of the problems that the existing checking method is not adapted to the full-balanced steel wire rope hoist type balanced friction drum characteristics, the working condition coverage is not complete, and the checking dimension is single, the present application provides a full-working condition and multi-dimension integrated checking method. The method comprises the following steps: respectively calculating the system equivalent mass and unbalanced load under normal lifting and water leakage empty working conditions; calculating the system translational acceleration under each working condition based on the braking system parameters; selecting the maximum acceleration to calculate the impact load coefficient; and on this basis, checking the strength and anti-skid of the steel wire rope. The present application realizes the linkage checking of the load, acceleration, impact coefficient and steel wire rope performance of the full-balanced steel wire rope hoist type ship lift in the emergency braking process, significantly improves the comprehensiveness, accuracy and engineering applicability of the checking, and provides reliable support for the safety design of the ship lift.

The invention discloses a method and a system for judging the stability of an underlying special-shaped goaf of a socketed pile, and belongs to the technical field of geotechnical engineering and underground space engineering. According to the method, firstly, an irregular geometric model of the special-shaped goaf roof is accurately constructed through geological survey data, and then the safety distance from the pile end to the goaf roof is calculated. The core lies in that the combined action of the pile end load and the overlying soil body load is comprehensively considered, the internal force state of the goaf roof is analyzed, and the stability is judged or the critical safety distance is calculated by comparing the internal force state with the bending resistance of the roof rock body. According to the method, the limitation of idealized simplification of the goaf shape in a traditional method is effectively overcome, the stability of the complex special-shaped goaf under the pile foundation load can be evaluated more accurately, and a scientific basis is provided for engineering safety design and construction.

The utility model discloses a narrow space pipeline loading, unloading and transporting integrated tool integrating safety design, which comprises a square frame, four corners of the bottom of the square frame are respectively fixed at the tops of four upright posts, a pipeline stabilizing safety device mounting frame is arranged among the waist positions of the four upright posts, and the bottoms of the four upright posts are respectively provided with a walking system. The bottoms of the left end and the right end of the square frame are each provided with a lifting lug, and chain blocks are arranged below the lifting lugs. The bottoms of the left end and the right end of the pipe stabilizing safety device installation frame are each provided with a pipe stabilizing safety device. According to the utility model, an integrated design is adopted, the functions of lifting, transportation and safety are integrated, the tedious process that a plurality of devices are required to be matched for use in the traditional method is avoided, the operation is simpler, more convenient and quicker, the construction requirements can be quickly responded, and the working efficiency is improved. And a pipeline fixing safety device is designed, so that the stability and safety of the pipeline in the lifting and transporting process can be ensured, and accidents caused by falling or collision of the pipeline are effectively prevented.

The invention discloses a flexible transmission beam-pumping unit, relates to the technical field of oil exploitation equipment, and provides the following scheme that the flexible transmission beam-pumping unit comprises a base fixing piece, a support fixed to the top of the base fixing piece, a walking beam rotationally connected with the top of the support, and a horse head fixed to one end of the walking beam, and further comprises a flexible transmission mechanism and a flexible transmission mechanism, the flexible power output device is used for flexible power output of the beam-pumping unit so as to drive a walking beam to swing repeatedly with the top of a support as the circle center. The distance adjusting mechanism is arranged on the top of the base fixing piece. Impact is absorbed through belt flexible transmission, vibration is buffered, part abrasion and sucker rod breakage risks are reduced, the service life of equipment is prolonged, the operation stability is improved, meanwhile, the belt tightness can be conveniently and accurately adjusted through the distance adjusting mechanism, different motors can be adapted, universality is high, and due to the double-locking and balance block safety design, the service life is prolonged. And the device is high in reliability, simple in structure and convenient to maintain, and the use cost is reduced.

The application discloses a fire intensity quantification method, a damage evaluation method, a safety design method and equipment based on energy equivalence, and relates to the field of performance-based fire protection design of wood structures. The method first obtains a temperature-time curve under an actual fire scene according to an actual fire temperature field model in a space of a wood structure building. Then, the heat introduced into the interior of a wood component under exposure to two types of fires is calculated in combination of the temperature-time curves of the actual fire and the standard fire. Based on the principle of energy conservation, the exposure time of the standard fire required for the same heat conducted into the interior of the wood component as the actual fire, i.e. the equivalent time, is derived. Finally, the fire intensity of the actual fire is quantified by using the calculated equivalent time, and the damage degree of the wood component under exposure to the actual fire is evaluated. The method disclosed by the application can formulate a practical rating method for the preliminary fire risk evaluation of wood structures, and promote the development of the performance-based fire protection design method of modern wood structure buildings.

The invention relates to the technical field of ship lifts in water conservancy projects, in particular to an emergency braking checking method and system for a full-balance steel wire rope winch type ship lift. The invention provides a full-working-condition and multi-dimension integrated checking method aiming at the problems that an existing checking method is not adaptive to the characteristics of a full-balance steel wire rope winch type balance friction winding drum, the working condition coverage is incomplete, and the checking dimension is single. The method comprises the following steps: respectively calculating system equivalent mass and unbalanced load under normal lifting and water leakage empty working conditions; calculating system translation acceleration under each working condition based on the braking system parameters; selecting the maximum acceleration to calculate an impact load coefficient; and checking the strength and skid resistance of the steel wire rope on the basis. By means of the method, linkage checking of the load, the acceleration, the impact coefficient and the steel wire rope performance of the full-balance steel wire rope winch type ship lift in the emergency braking process is achieved, checking comprehensiveness, accuracy and engineering applicability are remarkably improved, and reliable support is provided for safety design of the ship lift.

The application provides a method for safety design and monitoring of a natural gas and hydrogen fuel control valve, which realizes safety design monitoring and structure optimization improvement of the fuel control valve in the design stage through sequentially performing steps of modeling, data collection, analysis calculation, safety monitoring and structure optimization improvement, and guarantees safe service of the natural gas and hydrogen fuel control valve of a gas turbine.

The invention discloses a method for calculating the safety bearing capacity of a gate-type operation platform for construction, belongs to the technical field of safety calculation of building construction structures, and solves the problems that in the prior art, the safety bearing capacity of the gate-type operation platform under complex load and environmental conditions is not accurately calculated, and the system stability is difficult to comprehensively evaluate. According to the method, a parameterization calculation model is established based on a finite element theory, wherein a portal vertical rod is modeled by adopting a beam unit, a cross rod is modeled by adopting a beam unit, a wall connecting piece is modeled by adopting a rod unit, and a foundation is simulated by adopting a spring unit; the method comprises the steps of calculating dead load and live load axial force standard values, wind load standard values and bending moments thereof, solving an axial force design value, a bending moment design value, a wall connecting piece internal force design value and a basic reaction force design value through iteration, checking portal stability, wall connecting piece strength and foundation bearing capacity, and generating a safety evaluation report based on results. The method is used for safety design and bearing capacity evaluation of the gate-type operation platform in construction, and it is ensured that the construction process is safe and reliable.

The invention discloses a signal triggering mechanism, which relates to the technical field of hanging object putting safety design, and comprises a support integrated on a hanging object structure main body, a microswitch mounted on the support, a folding lifting lug, a lifting lug clamping groove connected to the support, a torsion spring and a rotating shaft, a mounting hole for mounting the folding lifting lug is formed in the support, and the folding lifting lug is rotationally mounted in the mounting hole through a torsional spring and a rotating shaft; the lifting lug clamping groove is formed in the side close to the mounting hole, a U-shaped groove corresponding to the mounting hole is formed in the lifting lug clamping groove, so that the folding lifting lug does not protrude out of the surface of a suspended object after being folded, the mounting hole and the U-shaped groove form a combined groove used for containing the folded folding lifting lug, and the folding lifting lug makes contact with the microswitch in the vertical state. Linkage of the microswitch can be achieved through erecting and folding of the folding lifting lug. The folding lifting lug is adopted to press the microswitch to form a mechanical linkage type signal triggering mechanism, and the mechanical linkage type signal triggering mechanism has the advantages of being easy to implement, good in machining manufacturability, convenient to manufacture, high in working reliability, high in interchangeability and good in universality.

The application belongs to the technical field of automobile passive safety design, and specifically discloses an end-to-end safety design large model system and method for automobile crashworthiness driving. The system comprises a large language model module, and an input module, a multi-modal feature extraction and analysis module and an output module connected with the large language model module respectively; the input module is used for inputting crashworthiness design requirement information; the large language model module and the multi-modal feature extraction and analysis module adopt a cross-modal interaction mode, which is used for multi-modal feature extraction and cross-modal fusion by using the word sequence corresponding to the crashworthiness design requirement information, and iterative analysis based on the fused features under a preset crashworthiness constraint condition to obtain a target three-dimensional crashworthiness structure scheme; and the output module is used for outputting the target three-dimensional crashworthiness structure scheme. The application can greatly improve the efficiency of the entire automobile crashworthiness design process and shorten the vehicle safety development cycle.

The invention belongs to the technical field of hydraulic drive two-degree-of-freedom rotating mechanism safety design, and particularly relates to a two-degree-of-freedom swing table multi-layer safety design method which comprises mechanism layer safety design, mechanical layer safety design, driving layer safety design and control layer safety design of a two-degree-of-freedom swing table. Through the multi-layer safety design, the application safety and reliability of the swing table in the fields of ships, vehicles or aircrafts and the like are improved. Through comprehensive design and optimization of mechanisms, machinery, driving and control systems, the stability and safety of the swing table in a complex working environment are ensured.

The utility model relates to the field of steamed stuffed bun wrapper pressing machines, and discloses a novel wrapper pressing machine which comprises a shell and a wrapper pressing mechanism used for flattening dough, and a driving mechanism used for driving the wrapper pressing mechanism to move downwards is installed at the position, close to the rear side of the upper end, in the shell; stand columns used for containing the wrapper pressing mechanism to conduct vertical limiting movement are fixedly arranged on the two sides of the upper end face of the shell, sliding grooves are formed in the opposite sides of the two stand columns, a base is arranged at the position, close to the lower end, of the inner wall of the shell, and a plurality of wrapper pressing grooves are formed in the upper end face of the base. By means of the high-efficiency, easy-to-operate and safe design, not only is more labor-saving in use, but also the production efficiency and the wrapper quality are improved.

The application provides a safety verification method and device of automobile glass, a storage medium and an electronic device, and the method comprises the following steps: determining the automobile glass type to which the target glass to be verified belongs, wherein the automobile glass type comprises front door glass and rear door glass; constructing a matched mechanical balance model according to the automobile glass type; calculating the lifting point position of the target glass by using the mechanical balance model, wherein the lifting point position is the horizontal distance from the lifting force point to the front corner point of the glass; calculating the overturning torque of the target glass when the state is switched according to the lifting point position; and verifying whether the target glass meets the safety design condition by using the overturning torque and the automobile glass type. Through the embodiment, the technical problem of large error in verifying the design safety of automobile glass in the prior art is solved, and the stability and design efficiency of the glass lifting system are improved.

This invention provides a method for constructing a safety architecture for hydrogen-powered trains, belonging to the field of rail transit train safety control technology. This invention elevates safety design from isolated components to the system level, covering the entire lifecycle and all operating conditions of the hydrogen-powered system, achieving comprehensive safety management both horizontally and vertically. It transforms passive protection into proactive defense, enabling early intervention through a closed-loop "monitoring-response-handling" system and rapid control intervention, effectively preventing the escalation of risks. The three-tiered defense architecture, in synergy with three levels of protection, ensures backup measures are available even when a single safety measure fails, significantly improving the system's fault tolerance and overall safety level. Closely addressing the risk characteristics of hydrogen-powered systems, with "blocking propagation" and "suppressing coupling" as its core principles, it effectively addresses specific risks such as hydrogen leakage, combustion and explosion, and cascading failures in electrochemical systems.

The invention discloses a quantitative evaluation method for glass fragment danger under explosion impact and application thereof, and belongs to the field of explosion protection and structure safety evaluation. The method comprises the following steps: firstly, collecting characteristic parameters of glass fragments after explosion, and screening dangerous fragments according to a standard; nondimensionalized weighting processing is carried out by introducing a reference value and a weight coefficient, and the danger index of each dangerous fragment is calculated in a segmented manner according to different casting distances; accumulating the indexes of all the dangerous fragments to obtain a unified danger index of the glass plate, and mapping the unified danger index to a standard safety level. According to the method, unified, comparable and quantifiable engineering evaluation on the danger of the glass fragments is realized, and a reliable basis is provided for safety design and scheme optimization of the glass under the explosion working condition.

The invention relates to the technical field of scroll compressors, in particular to a flammable refrigerant scroll compressor with high safety. The compressor comprises a compressor body; a junction box assembly is fixedly assembled on the outer wall of the compressor body; a safety design assembly is assembled in the junction box assembly; the junction box assembly comprises a junction box and a junction box cover. The junction box is made of a metal material and is fixedly arranged on the outer wall of the compressor body; the junction box cover is fixedly arranged on the junction box through a junction box cover fastening bolt; the safety design assembly comprises a motor outgoing line assembly and a binding post. The motor leading-out wire assembly is fixedly installed in the compressor body, one end of the motor leading-out wire assembly is connected with the motor, and the other end of the motor leading-out wire assembly is connected with a binding post fixedly installed in the junction box. According to the technical scheme, the problems that in a vortex compressor for the flammable refrigerant in the prior art, binding posts are collapsed, and the flammable refrigerant is ignited by ignition of an electrified part are solved.

A safety training stair for child rehabilitation belongs to the technical field of child rehabilitation, and aims to solve the problem that an existing child rehabilitation stair has a plurality of defects in safety protection design. The safety training stair comprises a bottom plate, a rehabilitation stair is mounted at the top of the bottom plate, and a monitoring camera is mounted at the top of the rehabilitation stair; according to the rehabilitation staircase, the air compressor, the air storage tank and the ventilation branch pipes are in linkage, the multiple expansion air bags can be rapidly inflated, and the expansion air bags are made to come out of the through holes of the staircase plate and fit the body contour of a child to deform in an adaptive mode. Meanwhile, the anti-skid blocks at the top of the expansion air bag form distributed anti-skid, so that the anti-skid stability is improved, and the single-point dragging feeling is avoided; the inflated air bag is higher than the surface of the staircase, so that the child can conveniently grasp the staircase when rolling down, the falling risk is greatly reduced, and the buffering and anti-skid collaboration is far better than that of a traditional structure.

The invention belongs to the field of aviation airborne system safety modeling and analysis, and particularly relates to a power generation system safety evaluation method based on a SysML correction model. Comprising the following steps: generating a SysML model; establishing a functional logic model by reading the SysML model of the system; adding a failure state on the basis of the function logic model to carry out fault analysis and establish a fault propagation model; establishing a mathematical model, a system architecture, a fault model, a transient / steady-state fault monitoring model and a fault simulator of the power generation system, forming a fault propagation relation analysis model of the power generation system, and judging a minimum cut set of a failure state according to the fault propagation relation analysis model; correcting the fault propagation model through the minimum cut set of the failure state and the influence of the fault on the local part, the higher level, the adjacent level and the system output; and performing model-based reliability and safety design analysis according to the corrected fault propagation model, generating a fault tree model of the power generation system, and performing power generation system safety assessment according to the fault tree model.

The application belongs to the technical field of strength test, and particularly relates to a strength testing device for resin bond grinding wheel, which comprises a testing shell and a PLC controller, the front side of the testing shell is provided with a protective door, the inner wall bottom of the testing shell is fixed with a clamping and rotating assembly, an impact loading assembly and a displacement adjusting assembly, and the moving end of the displacement adjusting assembly is fixed with a temperature control assembly. Through synchronous reproduction of high-speed centrifugal force field, real radial temperature field and dynamic lateral pulse impact, the application realizes multi-field coupling loading, adopts electromagnetic control step impact and automatic thermal shock cycle, can accurately determine the critical impact limit and fatigue resistance of the grinding wheel, greatly improves the testing authenticity and data reliability, effectively solves the distortion problem of normal temperature static test, and provides accurate support for the safety design and service life evaluation of the grinding wheel.

The present application relates to the technical field of safety testing, in particular to a safety testing method based on an IT support core BOSS system, comprising the following closed-loop iterative processes: safety testing preparation: based on the software safety special requirements of the IT support core BOSS system upgrade project, the systematic planning of the test environment, test tools and test data is completed; test target setting and constraint: according to the overall design scheme of the project, the safety test target system covering the code layer, the application system layer, the server resource layer and the core function layer is constructed, the test constraint conditions and the premise conditions are clarified and synchronized to all project related parties; the coverage degree of the safety test type after deployment in the BOSS cloud upgrade project and the perfection of the test cases are improved. Through safety testing at different levels, combined with test scene design, safety testing improves complexity, reduces rework time, improves work efficiency, and the compliance of safety design requirements can be effectively verified.

The application discloses a civil aviation aircraft airborne equipment safety deployment method satisfying airworthiness standards, and the method comprises the following steps: determining the airworthiness requirements of the airborne equipment according to the airworthiness standards; determining the deployment mode of the airborne equipment based on the airworthiness requirements, in combination with the aircraft type and the airline regulations; and performing safety design according to the determined deployment mode. The deployment method provided by the application can cover the airworthiness requirements of the Chinese civil aviation regulations, and the safety design of the required deployed airborne equipment can be performed in a targeted manner, so that the airborne equipment can satisfy the working environment of the civil aviation aircraft, the stability and safety of the airborne equipment are effectively improved, and the service life of the airborne equipment is prolonged.