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1290 results about "Shock resistance" patented technology
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Cycle-Transform network-based main shock and aftershock shock resistance toughness rapid evaluation method and system
PendingCN119475849Agood precisionimprove accuracyBiological modelsDesign optimisation/simulationElement modelComputation complexity
The invention discloses a rapid assessment method and system for shock resistance toughness of main and aftershocks based on a cycle-Transform network, and the method comprises the steps: building a finite element model of a building structure, inputting a plurality of groups of earthquake accelerations of main and aftershocks into the model, and obtaining a database comprising a plurality of groups of accelerations and corresponding structure displacement responses; building a loop-Transform neural network, and carrying out the training and optimization of the loop-Transform neural network; inputting the main shock and aftershock sequence into the optimized cycle-Transform neural network, predicting the displacement response of the structure under the double amplitude modulation main shock and aftershock sequence, then obtaining the building damage probability corresponding to different earthquake intensities under the main shock and aftershock situation by using maximum likelihood estimation, evaluating the corresponding damage index, calculating the recovery time, and finally obtaining the building damage probability corresponding to the different earthquake intensities under the main shock and aftershock situation. A function recovery curve of the structure is predicted, and shock resistance toughness evaluation is completed. According to the method, the precision of structure accumulated damage prediction under the aftershock effect is improved, and the calculation complexity and time consumption of toughness evaluation under the main and aftershock earthquake scene are remarkably reduced.
Owner:SOUTHEAST UNIV
Wall type-double column combined pier structure system
The invention relates to a wall type-double column combined pier structure system, and belongs to the technical field of bridge engineering. The structure system mainly comprises a cover beam, a swinging pier, a replaceable corrugated steel web wall, a pier bottom energy dissipation device, a swinging steel base, a bearing platform, an unbonded prestressed tendon and the like. A pier bottom energy dissipation device is arranged on the lower portion of the swing pier and composed of energy dissipation steel bars, an outer wrapping steel plate, a bottom steel plate and fixing lug plates. A replaceable corrugated steel web wall is arranged between two piers, and an upper flange plate is directly installed on a cover beam through embedded high-strength bolts and fixed to a bearing platform through a swing steel base. Unbonded prestressed reinforcements penetrate through the center positions of the swinging bridge piers. According to the structural system, a collaborative energy consumption-graded swing mechanism of'corrugated steel web wall deformation energy consumption-corrugated steel web wall swing-pier swing and energy consumption 'is formed under the earthquake action, earthquake energy can be dissipated more effectively, structural residual deformation is reduced, and the structural shock resistance and function restorability are improved.
Owner:BEIJING UNIV OF CIVIL ENG & ARCHITECTURE +2
Micro-channel liquid cooling circulation system heat dissipation device with impact resistance
The invention relates to the technical field of electric equipment cooling, and particularly discloses a micro-channel liquid cooling circulation system heat dissipation device with impact resistance. A transition bin; the plurality of groups of micro-channel units are distributed in the bracket at equal intervals; the heat conduction units are embedded between the adjacent micro-channel units; and the circulating adjusting unit is arranged in the transition bin. The circulation adjusting unit can be switched among three states according to heat dissipation requirements, so that the functions of mixed temperature equalization, partitioned heat dissipation and intermittent slow flow of cooling liquid are achieved; in the first state, thermal stress impact and fluid pulsation caused by local temperature difference are effectively reduced, and the thermal stability and thermal impact resistance of the system during continuous high-load operation are enhanced; in the second state, the peripheral flow path can be suspended, and the cooling liquid is concentrated in the central core area to enhance heat dissipation; and in the third state, the cooling liquid is temporarily detained in the micro-channel unit, the heat exchange time is prolonged, and the mutability of fluid flowing is slowed down.
Owner:LIAONING HETIAN PRECISION TECH CO LTD
Fabricated building frame structure beam-column joint structure and implementation method
PendingCN119777478ABuilding material handlingBuilding reinforcementsReinforced concreteShock resistance
The invention relates to the field of fabricated buildings, in particular to a fabricated building frame structure beam-column joint structure and an implementation method, and the beam-column joint structure comprises a reinforced concrete prefabricated column and a reinforced concrete prefabricated beam. A column cap is arranged on the top of the lower-layer column, a prefabricated column reserved anchoring longitudinal bar on the column penetrates through the column cap and is connected with an upper-layer column longitudinal bar anchoring hole, and a grouting hole and an exhaust hole are formed in the side face of the upper-layer column. One end of the precast beam is lapped on the column cap, a horizontal anchoring rib is reserved on the lower portion of the beam and extends to the joint, a precast beam stirrup is exposed out of the top, secondary cast-in-place concrete is laid on the top, a formwork is connected to the side face, a reserved groove is formed in the joint side, and a bed mortar layer is arranged at the bottom of the upper-layer column. According to the structure, the bearing and shearing resistance of beam-column joints is enhanced, and the stability and shock resistance of the frame are improved; prefabricated parts are produced in factories, efficiently assembled on site, matched with standard construction procedures, shortened in construction period and matched with industrial production, development of fabricated buildings is effectively promoted, and the problems of node connection and construction efficiency of existing fabricated structures are solved.
Owner:ANHUI SANJIAN ENG
Splicing type building energy-saving curtain wall
The invention relates to the technical field of building curtain walls, in particular to a splicing type building energy-saving curtain wall which comprises a curtain wall plate and a beam frame, the curtain wall plate is located on the front side of the beam frame, inserting blocks are fixed to the lower left corner and the lower right corner of the rear side of the curtain wall plate, and supporting blocks corresponding to the inserting blocks are fixed to the upper left corner and the upper right corner of the rear side of the curtain wall plate. And an upper side buckling block and a lower side buckling block are arranged on one side of the rear side of the curtain wall plate. According to the splicing type curtain wall system, accurate butt joint of the curtain wall plates in the installation process is ensured through accurate matching of the inserting blocks and the supporting blocks and butt joint design of the notches and the protruding blocks, the curtain wall plates are firmly fixed through the rotating wheels, the rotating frames, the sliding shafts and other assemblies, the heat bridge effect is reduced, the heat preservation performance is enhanced, natural ventilation is promoted through reasonable structural gaps, and the service life of the curtain wall is prolonged. The internal temperature of a building is effectively reduced, dependence on an air conditioner is reduced, passive energy saving is achieved, modular and standardized design is achieved, the construction efficiency is greatly improved, the installation process is simplified, manual adjustment and errors are reduced, and the splicing stability and shock resistance are enhanced through a locking structure.
Owner:JIANGSU CHAOBAI CONSTR TECH CO LTD
High-power ceramic heater based on new energy automobile and manufacturing method of high-power ceramic heater
InactiveCN120201601AOhmic-resistance heating detailsHeating element shapesTemperature controlNew energy
The invention discloses a high-power ceramic heater based on a new energy automobile and a manufacturing method of the high-power ceramic heater, and relates to the technical field of ceramic heater manufacturing. The invention comprises: a hollow tubular ceramic matrix; the temperature sensing layer, the first ceramic substrate, the heating layer, the second ceramic substrate, the first metal layer and the first electroplating alloy layer are sequentially attached to the outer side of the ceramic base body; the second metal layer and the second electroplating alloy layer are sequentially attached to the inner side of the ceramic base body. Through surface treatment of the novel heating slurry, the novel ceramic material, the metal layer and the electroplated alloy layer and innovative design of the integrated temperature sensing layer, the high-power ceramic heater is excellent in performance, service life, safety, temperature control and temperature impact resistance, and can cope with a harsh working environment; a more stable and efficient heating solution is provided; due to the innovative design, the ceramic heater is more reliable and durable under high-power, high-pressure and complex working conditions.
Owner:CHANGZHOU LIANDE CERAMICS CO LTD
Light and heat-dissipating aerospace small-sized calibration lamp mounting seat
PendingCN121274155ALighting support devicesElectric circuit arrangementsThermodynamicsShock resistance
The invention provides a light and heat-dissipating aerospace small-sized calibration lamp mounting seat, which relates to the technical field of aerospace optical small-sized calibration lamp structure fixation, and comprises a substrate mounting seat module, a conductive module, an insulating module and a heat conduction module. The conductive module comprises two chamfered semi-cylindrical conductive copper blocks and two wires with soldering lugs; the insulating module comprises an insulating polyimide isolating layer; the heat conduction module comprises a heat conduction insulation pad which is installed above two copper blocks, the positive electrode and the negative electrode of the two copper blocks are separated through an insulation polytetrafluoroethylene isolation layer, and the semi-cylindrical conductive copper blocks, the polytetrafluoroethylene isolation layer and the substrate installation base are positioned through pin holes. The soldering lug wire is installed on the left semi-cylindrical conductive copper block and the right semi-cylindrical conductive copper block in a pressing mode through top screws. The structure distribution is friendly, the anti-seismic performance is good, a good heat dissipation way is provided for the calibration lamp, and an effective and feasible implementation scheme is provided for fixing the small aerospace calibration lamp.
Owner:SHANGHAI INSTITUTE OF TECHNICAL PHYSICS CHINESE ACADEMY OF SCIENCES
Self-adaptive force output and energy consumption bridge vibration and vibration control inerter tuning device
The invention relates to a self-adaptive force output and energy consumption bridge vibration and vibration control inerter tuning device, and belongs to the technical field of vibration control. Comprising a roll shaft support, a spring rod, a main inerter element, a box chamber main body, a secondary inertia flywheel, a flow guide pipe, a transmission connecting rod and a flow baffle, the main inerter element penetrates through and is arranged in the box chamber main body, the outer end of the main inerter element is connected with the spring rod, the spring rod is connected with the roll shaft support, and the roll shaft support is respectively fixed with the bottom surface of a main beam and the top of a bridge pier; in addition, the flow guide pipe is arranged in the box chamber body, a flow baffle and a transmission connecting rod are further arranged in the flow guide pipe, and the transmission connecting rod is further connected with a secondary inertia flywheel. The damping device is achieved through a hydraulic mechanism, and the damping device with the self-adaptive inerter coefficient is formed through linkage of the inerter devices in the main box chamber and the auxiliary box chamber, so that the purposes of changing the inerter coefficient in real time and damping are achieved. The shock resistance, the transmission efficiency, the energy consumption effect, the structural rigidity and the stability of a vibration reduction system can be improved.
Owner:SHIJIAZHUANG TIEDAO UNIV
High-safety resistor
ActiveCN222690446UResistor terminals/electrodesElectrical resistance and conductanceShock resistance
The utility model provides a high-safety resistor which comprises a shell (1), a resistor core (2) is arranged in the shell (1), a mica shell (3) is arranged outside the resistor core (2), quartz sand is filled in the mica shell (3), a leading-out sheet (4) is inserted on the mica shell (3), one end of the leading-out sheet (4) is connected and matched with the resistor core (2), and a group of limiting salient points (5) which are in limiting fit with the mica shell (3) are arranged in the shell (1). And a potting layer (6) covering one end of the mica shell (3) is arranged in the shell (1). The insulating resistor is simple in structure and convenient to produce, the insulating property of the resistor is improved, and the working stability and safety of the resistor are effectively improved in order to improve the structural stability and shock resistance.
Owner:VICTORY CHINA FAR EAST ELECTRONICS
Simulation calculation method, device, equipment and medium for impact resistance system with pipeline
The invention relates to a simulation calculation method, device, equipment and medium for an anti-impact system with a pipeline, and belongs to the technical field of simulation computation.The simulation calculation method for the anti-impact system with the pipeline comprises the steps that geometric models of all parts of the anti-impact system with the pipeline are established, and the geometric models are imported into preset simulation software for preprocessing operation; modal analysis is carried out on the geometric model after preprocessing operation, and modal parameters of the anti-impact system with the pipeline are obtained; performing spectral analysis on the geometric model after the preprocessing operation based on the modal parameters to obtain an impact response of the anti-impact system with the pipeline; and according to the impact response, adjusting component parameters of the anti-impact system with the pipeline. According to the method, accurate simulation and calculation are carried out on the impact-resistant system with the pipeline, the component parameters of the impact-resistant system with the pipeline are adjusted, and the impact resistance of the impact-resistant system with the pipeline is improved.
Owner:WUHAN UNIV OF TECH
Stable anti-seismic air pipe
ActiveCN222458745Uprevent looseningImprove stabilityPipe supportsFlanged jointsNoiseShock resistance
The utility model discloses a stable anti-seismic air pipe, relates to the technical field of air pipes, and aims to solve the problems that the existing air pipe is not stable at the joint and is likely to be loosened due to vibration, and the air pipe is likely to be directly connected with a mechanical air outlet and is poor in overall anti-seismic effect, so that the air pipe generates loud noise. According to the technical scheme, the air duct comprises an air duct body, the outer side of one end of the air duct body is fixedly connected with an inserting frame body, the outer side of the other end of the air duct body is fixedly connected with an inserting block matched with the inserting frame body, and the outer side of the air duct body is detachably connected with a fixing support used for being installed and fixed to a wall. A mounting frame body is arranged in the fixing support, a fixing sleeve is fixedly connected to the outer side of the mounting frame body, and a movable rod is movably connected to the interior of the fixing sleeve, so that the effects of stable shock resistance, stable mounting and convenient adjustment and mounting are achieved.
Owner:XIANGJIA ENVIRONMENTAL TECH (JIANGSU) CO LTD
Shock resistance simulation device for civil engineering test detection
InactiveCN119574023AImprove convenienceincrease flexibilityVibration testingArchitectural engineeringShock resistance
The invention relates to the technical field of anti-seismic simulation, in particular to an anti-seismic capacity simulation device for civil engineering test detection, which comprises a pit platform and a top frame arranged in the pit platform, a simulation mechanism used for driving the top frame to shake to simulate an earthquake is arranged in the pit platform, and sliding frames are slidably connected to two ends of the inner side of the top frame. Top plates are slidably connected to the two ends of the inner side of the sliding frame, cylinders are slidably connected to the four corners of the top of each top plate in a penetrating mode, bottom plates are fixedly connected between the bottoms of the cylinders, and reset springs are fixedly connected between the top plates and the bottom plates. The multiple cylinders can be automatically inserted into positioning holes in the steel structure, the limiting block is pulled downwards to extrude and fix the steel structure to the top frame, and therefore automatic locking and fixing of the steel structure are achieved, a detector does not need to tighten multiple nuts through a tool, and the convenient performance of the device is greatly improved.
Owner:GUIZHOU SHUNKANG TESTING CO LTD
Laminate
To provide a laminate excellent in mechanical characteristics, damping characteristics, transparency and shock resistance.SOLUTION: A laminate obtained by laminating a resin composition containing a polyacrylate resin and silica particles at least on one surface of a transparent substrate is such that: the polyacrylate resin contains as a monomer unit, an acrylate monomer (A) represented by the following formula (1) [in the formula (1), R0 represents a hydrogen atom, a methyl group or an ethyl group; R1 represents a hydrogen atom or a methyl group; and n represents an integral number of 1-9]; a content of the silica particles is 15-50 vol.% based on the entire resin composition; and an average particle diameter of the silica particles is less than 150 nm.SELECTED DRAWING: Figure 1
Owner:UNITIKA LTD
Photovoltaic panel for green building outer wall
InactiveCN119813911APhotovoltaic supportsSolar heating energyExtreme weatherConstruction engineering
The invention discloses a photovoltaic panel for a green building outer wall, which is characterized in that the photovoltaic panel is connected with the surface of the building outer wall through a positioning frame, a plurality of photovoltaic panels are connected through a splicing assembly, the splicing assembly comprises a connecting seat, a plug body, an unlocking deflector rod and a spring pull rod, and the stable splicing among the photovoltaic panels is ensured through the combined action of the parts; and flexible disassembly and maintenance functions are provided. According to the invention, rapid electrical connection between the photovoltaic panels is realized through the rapid connection sockets, and networking and expansion of a photovoltaic power grid are facilitated. A windproof and shockproof structure in the design ensures that the system is kept stable in natural disasters such as extreme weather and earthquakes, and the service life of the photovoltaic panel is prolonged. The photovoltaic panel for the green building outer wall has the advantages of being fast to install, efficient in networking, high in wind resistance and shock resistance and convenient to maintain and disassemble.
Owner:WENZHOU POLYTECHNIC
Marine diesel engine shock resistance test device and use method
PendingCN119394575AImprove reliabilityReduce testing costsShock testingData acquisitionShock resistance
The invention discloses an impact resistance test device for a marine diesel engine. The impact resistance test device comprises an impact resistance test bed, the upper end of the shock resistance test bench is connected with the test base; a plurality of vibration isolators are mounted on the test base, and anti-impact machine legs, fixedly connected with the bottom of a diesel engine, at the upper ends of the vibration isolators are connected with an impact hammer and are arranged on the outer side of the impact test bed for impacting the impact test bed; the data acquisition instrument is in circuit connection with the upper computer; and the data acquisition instrument is in circuit connection with an ECU (Electronic Control Unit) of the diesel engine, the external fuel pump and the pneumatic motor. The impact force borne by the diesel engine in the operation state when a ship is subjected to explosion impact is simulated on the land, and the working performance of the diesel engine can be detected when the diesel engine is subjected to impact resistance. And accessory equipment connected with the diesel engine is not arranged on the test bed and is flexibly connected with the diesel engine, so that the reliability is high, the device can be repeatedly used, and the test cost is reduced.
Owner:HENAN DIESEL ENGINE IND
Time domain and frequency domain combined impact resistance analysis method and device for ship stern tube
The invention provides a time domain and frequency domain combined impact resistance analysis method and device for a ship stern tube, and the method comprises the steps: building geometric models of all parts in the stern tube through three-dimensional modeling software according to an actual engineering drawing of the stern tube, carrying out virtual assembly on the geometric model of each component according to the actual assembly relation of each component to obtain a geometric model of the tail shaft tube; importing the geometric model of the tail shaft tube into finite element software, endowing each component with material attributes, and carrying out grid division on the geometric model by adopting an overall network size control method; and performing static analysis on the geometric model after grid division to obtain static working stress, performing dynamic analysis on the geometric model after grid division to obtain dynamic impact stress, and synthesizing the static working stress and the dynamic impact stress into total stress. According to the method, time domain and frequency domain combined shock resistance response calculation is carried out for the tail shaft tube as a core component of the ship propulsion system, and the accuracy of shock resistance response calculation is improved.
Owner:SANYA SCI & EDUCATION INNOVATION PARK WUHAN UNIV OF TECH
Municipal bridge anti-seismic reinforcing structure and construction method
PendingCN120945817ABridge structural detailsBridge erection/assemblyArchitectural engineeringShock resistance
The invention discloses a municipal bridge anti-seismic reinforcing structure and a construction method, and relates to the technical field of municipal engineering.The municipal bridge anti-seismic reinforcing structure comprises a base fixed to the top of a pier, a top plate fixed to the bottom of a bridge and a supporting column located between the base and the top plate, and the bottom of the supporting column is fixed to the base through a shearing bolt; the shear bolts are fractured, so that the supporting columns slide on the base, and shock isolation is carried out between the pier and the bridge; the bottom of the arc-shaped seat is in contact with the top of the supporting column and is an arc-shaped contact surface, and vibration force acting on the bridge drives the arc-shaped seat to swing at the top of the supporting column, so that the vibration force is counteracted by utilizing gravitational potential energy of the arc-shaped seat and friction force between the arc-shaped contact surfaces. Through arrangement of the memory alloy, the arc-shaped seats, the copper plates and the supporting columns, the shock resistance of the structure is effectively improved.
Owner:JIJIAN (CHONGQING) URBAN CONSTRUCTION DEVELOPMENT CO LTD
Shockproof transportation packaging box
The utility model relates to the technical field of transportation packaging boxes, in particular to a shockproof transportation packaging box which comprises a box body, a box cover is movably connected to the top of the box body, an outer wall grid frame cover is fixedly connected to the inner wall of the box body, a first elastic air bag is arranged on the inner side of the outer wall grid frame cover, and a bottom grid frame cover is fixedly connected to the bottom of the box body. A second elastic air bag is arranged on the inner side of the bottom grid frame cover, air guide pipes are communicated between the periphery of the second elastic air bag and the lower end of the inner side of the first elastic air bag, and an air blowing box is fixedly installed at the upper end of the left side of the box body. Through cooperation of the structures, the transportation packaging box has the advantage of effective shock resistance, and the problems that in the transportation process of an existing transportation packaging box through a vehicle, when a road is bumpy and uneven, large shock force can be generated, precision equipment or household appliances in the packaging box are prone to being damaged by the shock force to a certain degree, and the service life of the packaging box is prolonged are solved. And the use by people is not facilitated.
Owner:SHANXI SUXIN LOGISTICS CO LTD
Windproof and anti-seismic flexible photovoltaic support structure
The utility model provides a flexible photovoltaic support structure with wind resistance and shock resistance, which relates to the technical field of photovoltaic supports and comprises a bottom plate, a support body is arranged at the upper end of the bottom plate, a plurality of mounting plates are arranged at the upper end of the support body, shock absorbers are arranged at the bottom of the bottom plate, and a reinforcing device is arranged on one side of the bottom of each shock absorber. The reinforcing device comprises a containing plate, one side of the containing plate is fixedly connected with the shock absorber, expansion bolts are inserted into the two sides of the containing plate in a threaded mode, reinforcing plates are fixedly connected to the two sides of the containing plate, and fixing bolts are inserted into one sides of the reinforcing plates in a threaded mode. According to the photovoltaic support structure, the mounting plate fixed to the photovoltaic panel can be supported and reinforced, the situation that the wind resistance of the upper end, connected with the photovoltaic panel, of the support is large in windy weather, and then the connecting position of the support body and the photovoltaic panel is blown by strong wind to deform is avoided, and therefore the using effect of the photovoltaic support structure can be improved.
Owner:SHANDONG ZHONGKE FUNENG PHOTOELECTRIC TECH CO LTD
Mounting structure and television power panel thereof
ActiveCN222423759UTelevision system detailsColor television detailsShock resistanceElectronic component
Owner:CHANGCHUN JIUTIAN ELECTRONIC TECH CO LTD
Unmanned aerial vehicle with anti-impact function
The invention discloses an unmanned aerial vehicle with an anti-impact function, and relates to the technical field of unmanned aerial vehicles, the unmanned aerial vehicle comprises an unmanned aerial vehicle body, anti-impact mechanisms, a fixing rod, a detection mechanism and an adjusting mechanism, the anti-impact mechanisms are fixedly connected to the periphery of the outer wall of the unmanned aerial vehicle body, and the fixing rod is fixedly connected to the center of the top of the unmanned aerial vehicle body; a detection mechanism is fixedly connected to the top of the fixing rod, two adjusting mechanisms are fixedly connected to the bottom of the unmanned aerial vehicle body, an anti-impact mechanism is arranged, the shock resistance and impact resistance of a fuselage and propellers of the unmanned aerial vehicle body are improved, the influence of shock on internal precise elements is reduced, and stable operation of equipment is guaranteed; meanwhile, damage to the machine body and parts is reduced through deformation buffering and energy absorption, and the safety and survivability of the equipment are improved; the detection mechanism is arranged, the obstacles are detected in multiple directions through rotation of the four laser range finders, distance information is transmitted to an external display screen, data support is provided for obstacle avoidance decision making, and collision accidents are avoided.
Owner:QUANZHOU NORMAL UNIV
Low-cost parachute landing recovery system for microgravity load return capsule
The invention relates to a low-cost parachute landing recovery system for a microgravity load return capsule, and aims to realize an efficient, reliable and economical recovery scheme through modular design, all modules are connected through standard interfaces, and assembly, maintenance and upgrading are facilitated. The structure module is used for assembling the parachute module and providing necessary shock resistance; the parachute module is used for pneumatic deceleration and attitude stabilization of the system and adopts a multi-stage unfolding structure; and the initiating explosive device module is used for bouncing the brake parachute, releasing the brake parachute and releasing a parachute closing opening. According to the system, the production and maintenance cost is remarkably reduced through modular design, meanwhile, the reliability and adaptability of the system are improved, and the system is suitable for various microgravity load return scenes and has wide market application prospects.
Owner:BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
Beam column steel bar connecting structure of concrete prefabricated assembly type building
The utility model relates to a beam column reinforcing steel bar connecting structure of a concrete prefabricated assembly type building, which comprises a prefabricated column die cavity, a prefabricated beam die cavity and a prefabricated floor die cavity, and a prefabricated column reinforcing steel bar keel and a prefabricated beam reinforcing steel bar keel are pre-mounted in the prefabricated column die cavity and the prefabricated beam die cavity respectively. The prefabricated column steel bar keel comprises at least two column outer side steel bars and at least two column inner side steel bars, the prefabricated beam steel bar keel comprises at least two beam outer side surface bars and at least two beam inner side steel bars, and the column outer side steel bars and the beam outer side surface steel bars are manufactured by bending the same first reinforcing steel bar to form an upper section and a lower section which are perpendicular to each other. The lower section is pre-installed in a prefabricated column steel bar keel, and the upper section is pre-installed in a prefabricated beam steel bar keel in a prefabricated beam mold cavity. The connecting strength of the prefabricated column and the prefabricated beam is improved, and the pressure resistance, the shock resistance, the supporting stability and the house safety are improved.
Owner:ALUHOUSE TECHNOLOGY (GD) COMPANY LIMITED
Impact resistance assessment method for internal equipment of underwater vehicle
The invention relates to the technical field of impact resistance evaluation of underwater vehicles, in particular to an impact resistance evaluation method for internal equipment of an underwater vehicle. The method comprises the following steps: setting a flow field size of an underwater test environment and carrying out flow field modeling; based on the modeled flow field, performing numerical simulation on the dynamic response of the underwater vehicle under the impact load, obtaining the dynamic response value of internal equipment in each key cabin section of the underwater vehicle, and performing low-pass filtering processing; fourier transform is carried out on the dynamic response value of the internal equipment in each key cabin section after low-pass filtering processing, and an impact spectrum of the underwater vehicle is constructed; and converting the impact spectrum into a design spectrum for impact resistance evaluation, and comparing the design spectrum with an impact resistance standard system to judge the impact resistance of the internal equipment of the underwater vehicle. According to the method, the influence of the impact environment on the underwater vehicle can be intuitively and accurately quantified, so that the structural design of an internal cabin section of the vehicle is helped to be optimized.
Owner:NORTHWESTERN POLYTECHNICAL UNIV +1
High-temperature-impact-resistant electric heating sheet for spacecraft and preparation method and application of high-temperature-impact-resistant electric heating sheet
The invention discloses a high-temperature-impact-resistant electric heating sheet for a spacecraft, and relates to the technical field of electric heating elements, and the electric heating sheet is of a three-layer composite structure. The composite film (heat preservation and insulation layer) is formed by aerogel and polyimide (PI) in an in-situ chemical bonding mode, and the polyimide composite film (heat conduction and insulation layer) is formed by Fe-Cr-Al / Ni-Cr double-layer alloy and carboxyl functionalized carbon nano tubes in a vertical orientation arrangement mode. The material has the characteristics of high thermal conductivity, wide temperature range stability, rapid thermal response and high temperature impact resistance. The preparation method comprises the steps of preparation of the heat preservation insulating layer, integration of the alloy heating layer and the heat conduction insulating layer, imidization reaction strengthening and plasma auxiliary heat treatment. The electric heating sheet can be used for thermal management of a spacecraft propulsion system or precision electronic equipment and other extreme temperature environments, the problems of high-temperature layering, response delay and the like of a traditional electric heating sheet are solved, and the thermal control reliability is improved.
Owner:BEIJING HONGYU SPACE TECH CO LTD
Power battery protection plate, battery pack comprising same and vehicle
ActiveCN222590916UImprove impact resistanceMeet different needsSynthetic resin layered productsCell component detailsPower batteryElectrical battery
The utility model relates to a power battery protection plate, and a battery pack and a vehicle comprising the same. The protection plate sequentially comprises a first surface layer, a buffer layer, a first adhesive film layer, a metal plate layer, a second adhesive film layer, a honeycomb core layer and a second surface layer from bottom to top. According to the utility model, the multi-structure combination is adopted, so that the bottom guard plate has a gradient energy absorption effect, the shock resistance of the bottom guard plate is improved, and different materials can be combined according to different application scenes to meet different requirements; the thickness of the product has designability, and customized preparation can be achieved according to the requirement of the installation size.
Owner:GUANGDONG KINGFA COMPOSITE MATERIALS CO LTD
Anti-seismic and shock-absorbing structure for beam type bridge
The invention belongs to the technical field of buildings, and particularly relates to an anti-seismic and shock-absorbing structure for a beam type bridge, which comprises a main beam and a bridge body, the bottom of the bridge body is fixedly connected with a first fixing plate; a plurality of groups of first fixing plates are arranged at the bottom of the bridge body; the bottom of the first fixing plate is fixedly connected with a damper. A plurality of groups of dampers are arranged at the bottom of the first fixing plate and are uniformly distributed at the bottom of the first fixing plate; the ends, away from the first fixing plate, of the dampers are jointly and fixedly connected with a second fixing plate. According to the step, through arrangement of a first fixing plate, a damper, a second fixing plate, balls, damping springs and a baffle, longitudinal vibration is weakened by the damper, transverse vibration is weakened by the damping springs, and the second fixing plate moves on the top of the main beam through the balls, so that the situation that the damper is twisted and damaged when transverse vibration is transmitted is reduced; the stability of the device during shock resistance and shock absorption is improved, and the service life of parts is prolonged.
Owner:赵迎宾
Shock resistance detection device for bags and suitcases
ActiveCN222461178Uavoid displacementavoid offsetMaterial strength using single impulsive forceShock testingGear wheelElectric machinery
The utility model belongs to the technical field of luggage detection equipment, and discloses a luggage impact resistance detection device, which comprises a detection machine main body and a fixing mechanism, the detection machine main body is respectively provided with a detection table and an impact device, and the fixing mechanism is arranged in the detection table; the fixing mechanism comprises round rods, gears, tooth pieces, a connecting block, a fixing piece, a rotating rod, a rotating wheel, a shaft body, an output wheel, a worm wheel, a motor and a worm, the round rods are fixedly connected to the interior of the detection table, the number of the round rods is two, the round rods are evenly fixed to the interior of the detection table, the surfaces of the round rods are sleeved with the gears, and the tooth pieces are connected to the rear sides of the gears in a meshed mode. The problems that when existing detection equipment detects a luggage, the detected luggage cannot be fixed and limited on the equipment, so that when the luggage is subjected to an impact test, a luggage body can be displaced from the detection equipment, and the accuracy of luggage impact resistance detection can be influenced are solved.
Owner:RUIAN YALI LUGGAGE CO LTD
Vibration reduction and impact resistance integrated structure optimization method suitable for ship base
ActiveCN119514030AGuaranteed accuracyGuaranteed reliabilityGeometric CADSustainable transportationMathematical modelGenetics algorithms
The invention discloses a vibration reduction and impact resistance integrated structure optimization method suitable for a ship base, and the method comprises the steps: carrying out the parameterization processing of a tensile section of a plate frame type three-dimensional negative poisson ratio honeycomb base structure, and obtaining all design parameters of the base; selecting two variables as design variables, and establishing a base model based on a parametric modeling method; simulating the base model by using a steady-state excitation simulation method to obtain an acceleration vibration level fall, simulating the base model by using a transient impact simulation method to obtain an impact amplification coefficient, and evaluating the vibration reduction performance and the impact resistance of the base respectively; a response surface method is adopted to fit mathematical models of the two design variables for the vibration reduction performance and the shock resistance; two design variables are coded into an individual gene character string, an optimization target is selected, and a genetic algorithm is used for optimization. According to the method, the vibration reduction performance and the shock resistance of the base can be comprehensively considered, and the accuracy and the reliability of an optimization result are ensured by combining a genetic algorithm and finite element calculation.
Owner:WUHAN UNIV OF TECH
Battery riveting cover plate structure, battery cell and battery pack
ActiveCN222673159UCell lids/coversElectric connector introductionElectrical batteryInternal resistance
The utility model discloses a battery riveting cover plate structure, cell and battery pack, said cover plate structure includes substrate, positive pole subassembly, negative pole subassembly and lower plastic cement, said positive pole subassembly and negative pole subassembly both include pressure plate, upper plastic cement, seal ring and rivet, the composite ring comprises an inner ring and an outer ring, the inner ring and the cathode rivet are made of the same material, and the outer ring and the cathode pressing plate are made of the same material; according to the utility model, the composite ring is additionally arranged between the negative pressure plate and the negative pole, the inner side and the outer side of the composite ring are made of different metals and are connected with the negative pressure block and the negative pole in a riveting or welding manner, and the mechanical shock resistance of the cover plate pole is improved by utilizing the principle that the same metals are fused after being welded, so that the internal resistance fluctuation is reduced; the abnormal heat generation rate of the terminal is reduced; and the consistency of the battery cell is improved.
Owner:安徽得壹能源科技有限公司