53 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 invention discloses a space cabin door system and a rapid leak rate detection method thereof, and belongs to the technical field of reliability and safety design of space cabin doors. The cabin door system comprises a sealed cabin door, a pressure point switch and a cabin door rapid leak detector, the end face of a door body of the sealed cabin door is sleeved with a sealing ring inner ring and a sealing ring outer ring, when the cabin door is closed, the two sealing rings make contact with the sealing face of the door frame in a pressed mode, and a sealed cavity is formed between the two sealing rings and the sealing face of the door frame. The pressure point switch is arranged on the door frame and detects whether the cabin door switch acts in place or not. And the cabin door rapid leak detector inflates the sealed cavity and performs leak rate test to obtain the sealing condition of the sealing ring. Through the application of the invention, the in-place action of the cabin door can be reliably detected, the sealing performance of the cabin door can be quickly given, and a quantitative basis is provided for reliably closing the cabin door.

The invention discloses a multi-layer safety protection system of a multi-degree-of-freedom motion platform, and relates to the field of multi-degree-of-freedom motion platform safety protection, and the multi-layer safety protection system comprises a mechanical system safety design module which is used for checking interference conditions of the multi-degree-of-freedom motion platform under various postures; the driving system safety protection module is used for performing safety protection on a driving system of the multi-degree-of-freedom motion platform; and the control system safety protection module is used for performing safety protection on the control system of the multi-degree-of-freedom motion platform. Safety protection design is carried out on the multi-degree-of-freedom motion platform from different levels, and operation safety of the multi-degree-of-freedom motion platform is guaranteed.

The invention relates to an asynchronous input signal function safety design method and device and a chip, and the method comprises the steps: inputting an asynchronous input signal into a first synchronization module and a second synchronization module at the same time, the first synchronization module being the same as the second synchronization module; and simultaneously inputting the output signal of the first synchronization module and the output signal of the second synchronization module into a detection module, wherein the detection module detects the difference of the output signal of the first synchronization module and the output signal of the second synchronization module in period. According to the asynchronous input signal function safety design method provided by the invention, a simple safety mechanism of an asynchronous circuit is realized through redundancy design of the two synchronous modules.

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 kind of inspection robots for special environment in coal mine and use method, it is related to coal mine safety production technical field.A kind of inspection robots for special environment in coal mine, including walking track, further include: walking mechanism, main body frame, detection unit, power supply unit, communication unit and holder shield subassembly, wherein, the walking mechanism is cooperated with walking track and realizes movement, the detection unit is realized by holder shield subassembly instrument image acquisition, the power supply unit and communication unit are respectively for whole machine power supply and data transmission;The application ensures stable operation under high-risk environment by adopting explosion-proof safety design, realizes the high-precision positioning and identification of instrument by dynamic search algorithm and intelligent detection algorithm, has unmanned inspection, real-time data transmission function, its modular structure can be flexibly extended, can adapt to a variety of instrument detection needs, significantly improves coal mine inspection efficiency and intelligent level.

The invention discloses an impeller, a device and a method for a broken pump test of a magnetic suspension molecular pump. The impeller for the broken pump test of the magnetic suspension molecular pump comprises an impeller main body, a plurality of impeller blades, a plurality of impeller blades, a plurality of impeller blades and a plurality of impeller blades, and the temperature response deformation component is arranged in the cavity structure, and the shape of the temperature response deformation component is matched with that of the cavity structure. Wherein the temperature response deformation component is configured to generate mechanical displacement through expansion or phase change at a preset temperature so as to apply a surface load to the cavity structure. According to the impeller for the broken pump test of the magnetic suspension molecular pump, the triggering condition and the failure mechanism of the broken impeller can be more accurately reproduced, so that the safety design and the risk prevention and control capability of the magnetic suspension molecular pump are improved.

The utility model relates to the technical field of safety belt safety design, in particular to a safety mother rope tying and hanging device which comprises a vertical rod and a mother rope. The vertical rods are arranged in parallel; two ends of the mother rope are fixedly connected with the vertical rods; wherein a hook assembly is further arranged on the mother rope, the hook assembly comprises a hook buckle and a safety rope connected with the hook buckle, the other end of the safety rope is connected with a safety belt of a worker, a cushioning mechanism is further arranged between the hook buckle and the safety rope and comprises a connecting ring, a spring and a connecting rod, the connecting ring is in a semi-ring shape, and the two ends of the connecting ring extend out of outer side arms; the connecting rod is of a straight rod structure, the two ends of the connecting rod extend out of inner side arms, and the outer side arms and the inner side arms penetrate through the spring and are staggered. The safety rope has the advantages that by arranging the cushioning mechanism, the direct acting force between the safety rope and the mother rope is reduced, and meanwhile the hidden danger that the hook falls off due to stress can be effectively relieved.

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 safety protection system design and construction supervision system, and belongs to the technical field of construction supervision. The method is used for solving the technical problems that in an existing scheme, the design and construction supervision mode of a safety protection system is single, and the autonomous optimization management effect is poor. Monitoring statistics and processing calculation are carried out on different safety design items from different dimensions to obtain exception supervision results corresponding to the different dimensions, and the exception supervision results correspondingly processed by the different dimensions are sorted and combined to obtain a local construction data processing sequence; through a local construction data processing sequence obtained through processing in different aspects in the early stage, stage reliable state data processing and analysis are carried out on design and construction of the safety protection system, and dynamic optimization management is carried out on design and construction of the safety protection system in a self-adaptive mode according to an analysis result.

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 present invention relates to the technical field of automobile parts, and discloses a third-row structural safety design method in a rear-end collision, comprising the following steps: step one, force transmission path design; step two, energy absorption design; total momentum calculation before and after the collision; energy conversion during the collision, energy conversion calculation during the collision; energy conversion during the collision, as the weight of the truck increases, the energy absorption increases, and when the truck is more than 10T, the energy absorption tends to stabilize at 25%. The present invention effectively guides the force generated during the collision by clarifying the upper, middle and lower parts of the three force transmission paths, thereby reducing the impact on passengers, providing additional support in the collision, and improving stability. The energy absorption ratio of 25% in the design ensures that the vehicle can absorb a certain amount of energy during the collision, reducing the kinetic energy transmitted to the passengers, and achieving the beneficial effect of solving the problem of low safety of the third row.

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 present invention relates to the technical field of lifting equipment, and discloses a material lifting equipment for construction engineering, including a fixed frame, an external support, a winch and a cage, wherein the two fixed frames are symmetrically installed on the building platform, and the external support is hingedly installed on the fixed frame. The steel rope 1 on the winch passes around the external support to lift the cage, and after the winch lifts the cage to the platform where the fixed frame is located through the steel rope 1, the steel rope 1 pulls the external support to rotate, so that the cage is transferred to the platform. The present invention effectively solves the operation difficulties of traditional lifting equipment in space-constrained scenarios through structural innovation and safety design, and is more suitable for material lifting operations of low-rise buildings after the main structure is completed. By winding the steel rope 1, the cage is first lifted vertically to the platform height, and then the external support is pulled to rotate, so that the cage is smoothly transferred to the platform, thereby improving construction efficiency and safety.

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.

A safety design method according to an embodiment comprises: executing an ammonia dispersion simulation on the basis of ventilation control information for an engine room in an ammonia-fueled ship; updating the ventilation control information so that a first area where the ammonia concentration is greater than or equal to a threshold is reduced on the basis of a hazard map generated through the dispersion simulation; repeating the execution of the dispersion simulation and the update of the ventilation control information until the first area satisfies a first condition; executing a disaster impact simulation for crew on the basis of the hazard map that satisfies the first condition, work information of the crew, and equipment arrangement information; updating the equipment arrangement information so that a second area where the risk of disaster impact on the crew is greater than or equal to a threshold is reduced on the basis of a disaster impact risk map generated through the disaster impact simulation; repeating the execution of the disaster impact simulation and the update of the equipment arrangement information until the second area satisfies a second condition; and outputting the ventilation control information and the equipment arrangement information that satisfy the second condition.

A valve packing sealing balance and safety design method based on multi-objective optimization belongs to the technical field of valve packing sealing and comprises the following steps: constructing a finite element simulation model of a valve packing sealing structure to obtain maximum contact pressure and maximum equivalent stress distribution of packing under actual working conditions; key parameters influencing the sealing performance and the structural safety are recognized; establishing a sample set to construct a Kriging and back propagation neural network combined high-precision agent model optimized based on a grey wolf optimization algorithm; a dual-objective optimization function and related constraint conditions are set, a non-dominated sorting genetic algorithm is applied to perform multi-objective optimization solution, a Pareto optimal solution set is obtained, and an optimal filler structure is selected and verified through finite element simulation. According to the invention, by synergistically considering two targets of sealing balance and structural safety, differential design of a multi-layer filler structure is realized, so that each layer of filler provides a balanced sealing effect, the stress level of a key part is remarkably reduced, and the technical problem that the sealing effect and the long-term safety of the traditional valve filler are difficult to consider is solved.

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.

An embodiment of the present application discloses a remote control valve control system, which includes a first main control box, a second main control box and a plurality of loop branch boxes; a loop branch box is respectively provided for any two Class A compartments in each main vertical zone; the first main control box or the second main control box is used to forward the received control instructions to the loop branch box that is currently in working state; the loop branch box is used to receive the control instructions and control the remote control valve corresponding to the control instructions when in working state, and send the collected status information of the remote control valve to the first main control box and the second main control box; the first main control box and the second main control box are also used to forward the status information sent by the loop branch box to the central control system; the redundant safety design requirements are met while reducing the equipment procurement cost, reducing the occupied layout space, and reducing the difficulty and workload of analysis for safe return to port.