83results about How to "Adjustable" patented technology

The acupuncture and moxibustion auxiliary operation device comprises an outer shell, an inner shell and a controller, a fixing assembly is installed on the outer side wall of the outer shell, a rotating assembly is installed on the inner top wall of the outer shell, an opening is formed in one end of the inner shell, a first pressure sensor is installed at the opening, and a connecting rod is fixedly connected to the inner top wall of the inner shell; the connecting rod is provided with a plurality of leaking holes and connected with a power part, a force storage shell is installed outside the power part, a strain gauge is embedded in the side wall of the force storage shell, the bottom of the force storage shell is communicated with a needle pushing assembly, the needle pushing assembly comprises a shell, a needle clamping device is in sliding fit with one end of the shell, a pushing plate is in sliding fit with the interior of the shell, and the space between the pushing plate and the needle clamping device is filled with liquid. And a liquid level sensor is embedded in the shell. The problems that in the traditional acupuncture treatment process, the dependence on the skills of doctors is high, operation is tedious, and the control over the needle inserting depth and the needle twisting angle is inaccurate are solved.

The utility model relates to the technical field of numerical control machining, in particular to a vertical milling machine chamfering tool which comprises a workbench, an adjusting device, a clamping device and a rotary adjusting device, the top end of the workbench is provided with a movable seat through the adjusting device, the top end of the movable seat is provided with the clamping device, and the rotary adjusting device is arranged on the workbench. The clamping device comprises fixed plates, sliding blocks, a movable plate, a two-way screw rod, a gear, a rack and an electric telescopic rod, the fixed plates are fixedly installed at the left end and the right end of the movable seat, the two-way screw rod is transversely and rotationally installed in the fixed plates, and the two-way screw rod drives the two sets of sliding blocks to linearly move on the two-way screw rod; the two sets of sliding blocks drive the movable plate to move from the two ends to the middle till the rotary adjusting device is driven to clamp the left end and the right end of the workpiece, linear movement or rotary adjustment can be conducted on the workpiece under the cooperation of the rotary adjusting device and the adjusting device, and all-directional chamfering machining can be conveniently conducted on the workpiece in the later period.

The embodiment of the invention discloses a surface temperature inversion method and device based on remote sensing satellite data, and a medium, and relates to the technical field of remote sensing, and the method comprises the steps: receiving a heat island effect analysis demand triggered by a user, obtaining satellite remote sensing data of a target region and a corresponding metadata file based on the heat island effect analysis demand, and storing the satellite remote sensing data in the target region; processing the satellite remote sensing data to determine earth surface radiation parameters; the atmospheric features and the earth surface features of the target area are evaluated through the metadata file and a pre-obtained normalized vegetation index, a dynamic adjustment factor corresponding to the target area is determined, a preset single-window algorithm model is optimized through the dynamic adjustment factor, and an optimized single-window algorithm model is determined; and inputting the surface emissivity, the atmospheric transmittance, the brightness temperature value and a pre-acquired atmospheric average action temperature into an optimized single window algorithm model for calculation, and determining a surface temperature distribution diagram of the target area for heat island effect analysis.

The present invention relates to the technical field of elevator shaft construction equipment, and specifically to an assembled construction platform for an elevator shaft, comprising a U-shaped block, a convex block, a plug-in plate, a positioning block and a platform bottom plate, wherein at least two of the U-shaped blocks are symmetrically installed at the intersection of the load-bearing wall and the floor surface of the elevator shaft door opening, a convex block is fixedly installed at the center position of the opposite surfaces of the two U-shaped blocks, a plug-in groove is opened at the center position of the two convex blocks, a plug-in plate is plugged into the plug-in groove, and the cross-section of the plug-in plate is concave; square holes are opened horizontally and evenly spaced near the bottom position of the plug-in plate, a positioning block is plugged into each of the square holes, and the positioning block is fixed to the side wall of the plug-in plate by a positioning bolt, a platform bottom plate is hinged at one end of the positioning block facing the inside of the elevator shaft, placement grooves are opened at even intervals on the top of the platform bottom plate, and a threaded positioning groove is arranged at the bottom of the placement groove. The present invention has the characteristics of high safety and wide application range.

The application relates to the technical field of powder production and processing equipment, in particular to a flow guide device for airflow mill pulverization and a pulverizer adopting the flow guide device, wherein the flow guide device for airflow mill pulverization comprises a device body, a flow guide area, a collection area and a drainage area are formed in the device body, and the collection area and the drainage area are distributed around the flow guide area; when the device body is matched with a pulverization cavity and the pulverization cavity is in a working state, airflow sprayed from a nozzle flows to the lower part of the collision area after collision in the middle of a pulverization area and then flows into the flow guide area and the drainage area in sequence; the collection area collects coarse particles sinking downwards, the collection area is formed with an opening, coarse particles in the collection area can flow out through the opening, the flowed-out coarse particles can flow into the drainage area together with airflow and flow out of the drainage area; the flowing direction of airflow flowing out of the drainage area is towards the top of the pulverization cavity. The flow guide device for airflow mill pulverization can improve powder preparation efficiency and improve the vortex state at the bottom of the pulverization cavity.

The invention discloses a dual-mode communication method and system based on intelligent decision making. The method comprises the following steps: acquiring historical operation data and actual operation data of HPLC (High Performance Liquid Chromatography) and HRF (High Performance Framework); creating a reinforcement learning model which comprises a state space, an action space and a reward function; the state space is a combined vector of a dual-mode channel quality index, the action space comprises HPLC priority, HRF priority and dual-mode self-adaption, and the reward function is a weighted calculation formula of throughput, power consumption and packet loss rate; and performing iterative training on the reinforcement learning model based on the historical operation data to obtain an intelligent optimization model, inputting the actual operation data into the intelligent optimization model to obtain an optimal action, and adjusting the dual-mode communication parameters according to a corresponding preset parameter adjustment rule. According to the invention, communication mode selection and parameter adjustment are more suitable for actual environment requirements, the communication efficiency is improved, the energy consumption and data loss risk are effectively reduced, the system architecture is simplified, and the deployment cost and response delay are reduced.

This invention discloses a dynamically adjustable forest gap simulation device, belonging to the technical field of ecological experimental equipment. The device includes a supporting column, a supporting frame, a driving component, a shading component, and an intelligent control unit. The supporting column is a multi-stage telescopic structure equipped with a field anchoring mechanism. The supporting frame consists of a central connecting part and multiple radially telescopic and foldable radial arm-shaped components. The shading component is laid on the arm-shaped components to form a variable shading area. The driving component drives the arm-shaped components to extend and retract. The intelligent control unit uses off-grid photovoltaic power and can adaptively control the movement of the arm-shaped components according to preset strategies, light intensity, and wind speed parameters, realizing dynamic forest gap simulation and dynamic restoration of wind-disturbed light spots. This invention features high modularity, accurate simulation, stable structure, and suitability for long-term unattended field experiments, effectively solving the technical problems of traditional forest gap simulation devices, such as static fixation, poor dynamic effects, low intelligence level, and insufficient field adaptability.

The application discloses a shear connector, a steel-concrete composite beam containing the shear connector and a construction method of the steel-concrete composite beam. The shear connector comprises an inverted truncated cone type cylinder (7), a stiffener, a cover plate, a penetrating steel bar (8) and a high-strength bolt (21); the stiffener comprises an integrally formed stiffener bottom plate (13) and a stiffener side plate (14), the size of the stiffener bottom plate is consistent with the size of the lower opening of the cylinder, and the stiffener bottom plate is attached to the lower opening of the cylinder; the stiffener bottom plate is provided with a second connecting hole for connecting the high-strength bolt; the stiffener side plate is arranged around the stiffener bottom plate and is attached to the inner wall of the cylinder; the height of the stiffener side plate is lower than that of the first connecting hole; the cover plate covers the upper opening of the cylinder; the penetrating steel bar transversely passes through the cylinder through the first connecting hole and leaves a connecting section on each side of the cylinder; and the high-strength bolt connects the stiffener bottom plate through the second connecting hole. The application realizes the disassembly and replacement of each component of the shear connector and the prefabricated bridge deck; and the structure form and stress performance of the shear connector are optimized.

The application relates to the field of micro-electro-mechanical systems, and specifically discloses a micro-cantilever beam deformation correction method and system for MEMS sensor output errors, which comprises the following steps: exciting a composite vibration mode of a micro-cantilever beam through a multi-mode active excitation signal, collecting a dynamic response signal and identifying a deformation state parameter by using a deep learning model, generating laser micro-processing parameters based on the identification result to perform selective material removal or annealing treatment, establishing a deformation trend prediction model to perform pre-compensation adjustment, and ensuring the correction effect through a closed-loop verification mechanism; the system comprises a multi-mode active excitation control module, a dynamic response collection and processing module, a deformation identification and state evaluation module, a laser micro-processing control module, a deformation trend prediction and pre-compensation module, a correction effect verification and iterative control module, and a system integration and data management module. The application solves the problem of sensor errors caused by physical deformation of a micro-cantilever beam, and significantly improves the precision and long-term stability of a MEMS sensor.

The utility model discloses an adjustable filter assembly, which relates to the technical field of filters, and comprises a filter main body and an adjusting assembly, the bottom of the filter main body is provided with a bottom shell, the front surface and the rear surface of the bottom shell are provided with chutes, and the adjusting assembly is arranged in the middle of the front end of the bottom shell. And the adjusting assembly comprises a crank handle, a trapezoidal screw rod, a screw rod nut, a fixing block, a connecting rod, a fixing plate, a mounting plate, a mounting hole and a sliding pin, the rear end of the crank handle penetrates through the front end of the bottom shell to be connected with the trapezoidal screw rod, and the screw rod nut is connected to the outer portion of the trapezoidal screw rod. According to the adjustable filter assembly, the first movable clamping plate is pushed through the elastic force of the reset spring, the other two movable clamping plates outside the cross rod can be folded with the fixed clamping plates respectively, and therefore a cable at the position of a wiring duct is clamped; the situation that the cable is damaged due to the fact that clamping force is too strong in a traditional screw fixing mode is avoided.

The utility model discloses a tubular heat exchanger flange end face flatness continuous detection device which comprises a fixing assembly connected with a supporting bearing, the supporting bearing is installed on a rotating shaft, and a sliding guide rail is vertically installed on the rotating shaft. A ball screw is installed on the sliding guide rail, a movable sliding block is installed on the ball screw, and the bottom of the movable sliding block is connected with a connecting rod used for clamping an external measurer. And rotating power pieces are respectively arranged at one end of the ball screw and the top end of the rotating shaft. Therefore, the device can be applied to flatness detection of a heat exchanger end face flange which is internally provided with a heat exchange pipe and cannot be fixed and positioned by installing an inner supporting mechanism at the pipe diameter of the flange, and continuous measurement of the radial flatness of the flange is realized.

The invention provides an underwater extensible acoustic array carrying device, which comprises an autonomous control sealed cabin assembly, a bearing frame assembly, a motor driving assembly, a thrust seat assembly, an extension arm assembly, a tightener and a tightening rope, and is characterized in that the tightener and the tightening rope can adjust the position of the extension arm assembly; the autonomous control sealed cabin assembly is installed on the bearing frame assembly through bolts, the thrust seat assembly is arranged on the bearing frame assembly, and the thrust seat assembly moves up and down to drive the stretching arm assembly to be unfolded and folded. The acoustic array is flexible in arrangement, stable in structure, large in folding and unfolding ratio, stable and reliable in unfolding process, high in overall structure unfolding rigidity, stable in acoustic array type and convenient and fast to machine and assemble, and mistaken touch caused by the water pressure effect under the large water pressure environment can be avoided.

The invention provides a robot navigation method and device based on edge and cloud cooperative computing. The method comprises the following steps: acquiring real-time environment sensing data through a body sensor of the robot; executing real-time positioning and map construction, and generating a local obstacle avoidance instruction; generating a task unloading decision according to the task division strategy, the current network state and the server resource state; and fusing the optimized global map, the long-term trajectory prediction result and the local obstacle avoidance instruction to generate a global comprehensive navigation strategy of the robot. According to the method, robot navigation tasks are intelligently divided and dynamically unloaded through an innovative edge and cloud cooperative computing framework, the low delay of the edge side and the powerful computing power of the cloud are fully utilized, and the core bottleneck that the computing power of a robot body is limited can be effectively solved. The overall delay of the navigation system is obviously reduced, and the navigation efficiency, safety and intelligent level in a large complex scene are improved.

The invention provides a vehicle power system suitable for lunar polar region exploration and a verification method, and relates to the technical field of deep space exploration, the system comprises a configurable energy module, a driving motor transmission mechanism, a power conversion management system, a thermal control subsystem and an autonomous driving controller; the energy module comprises a space fuel cell module, a wide-temperature lithium ion battery module, a solar cell panel module and a radioactive isotope battery module, and one or more of the modules can be selected to be combined according to task requirements. According to the invention, full-scene energy supply coverage of the monthly day, the monthly night and the permanent shadow area can be realized, uninterrupted propulsion of detection and transportation tasks is supported, and the task execution efficiency and the detection coverage range are greatly improved; meanwhile, it can be ensured that the driving power is accurately matched with the driving requirement of the complex terrain in the polar region of the moon, the driving power calculation deviation is effectively reduced, and the terrain passing capacity and operation stability of the vehicle are remarkably improved.

The present application relates to the technical field of block chain, and particularly relates to a kind of identity authentication encryption method based on block chain node user, comprising the following steps: step 1: build user identity information database, obtain user identity information data in database storage;Step 2: traversing reading the user identity information data stored in database, extract character data in the user identity information data stored in database, and apply character data to build the encryption database used when user is authenticated on block chain node;The method in the present application further constructs the key database with the identity information of the user on the basis of the encryption algorithm used when the existing block chain node user is authenticated in the process of executing its steps, so that the further encryption of the key database constructed is applied when the block chain node user is authenticated, so that the block chain node user is more secure when being authenticated.

The utility model belongs to container auxiliary equipment technical field discloses a kind of articulated type lifting steering wheel devices for container traction system, the device aims at the problem that existing warehouse container is difficult to adjust position and low turnover efficiency due to lack of moving facilities, provides a pair of flexible dismounting lifting steering wheel. Mainly by walking wheel, hydraulic cylinder, cylinder rod, rotary wheel frame, hydraulic cylinder crossbeam and rotary wheel mounting seat are formed;Among them, hydraulic cylinder drives walking wheel lifting by cylinder rod, rotary wheel frame and cylinder rod are equipped with bearing to realize 180 ° steering function, rotary wheel frame side is equipped with traction connecting rod seat, and steering wheel is connected by traction connecting rod. Hydraulic cylinder crossbeam is embedded in the clamping groove of rotary wheel mounting seat at both ends, and is fixed by pin shaft;The rectangular connecting plate outside rotary wheel mounting seat is connected with container bottom by bolt;The utility model has lifting adjustment, free steering and quick dismounting function, solve the flexible displacement, accurate positioning and efficient traction problem of container in narrow space, significantly improve cargo loading and unloading efficiency.

The invention discloses an intelligent regulation and control system and method for tea fermentation, and relates to the technical field of tea processing, and the method comprises the following steps: S001, establishing a synchronous acquisition process, continuously recording a wind speed rhythm, a spraying rhythm, air pressure, humidity and leaf surface temperature, and generating a damp-heat cross plot according to a time sequence for identifying an overlapping relationship between wind flow and a humidifying rhythm; and S002, identifying a beat overlap region based on the damp and hot cross plot, setting a spray collection window and a spray stop buffer window in the beat overlap region, and generating phase pointer data for time sequence coordination by adjusting spray residence time and a diffusion range. According to the method, rhythm overlapping recognition is achieved through multi-parameter synchronous collection and a damp-heat cross plot, wind and fog dislocation regulation and control are achieved based on a phase pointer, evaporation stress is slowly released by combining measures such as fog particle preposition, temperature rise gentle slope and wind direction guiding, closed-loop control is constructed based on a breathing rhythm index, and self-adaptive steady-state regulation of the fermentation environment is achieved.

This invention discloses a method and system for land resource spatial utilization planning, relating to the field of land planning. The method includes: acquiring relevant data of the planning area and performing standardized processing; constructing spatiotemporal land use units containing a time dimension based on a time-division strategy; receiving temporary land use event information and mapping it to corresponding spatiotemporal land use units; performing conflict verification based on preset constraint rules and generating permit determination results; comprehensively evaluating and ranking candidate schemes that pass the verification; and outputting temporary land use permit results, a control list, and audit logs. The system includes a data management module, a spatiotemporal unit construction module, a rule engine module, a ranking and evaluation module, and a result output module. This invention achieves integrated management of spatial and temporal dimensions, supports dynamic planning and risk identification driven by temporary land use events, and improves the standardization and traceability management level of land resource spatial utilization.

The utility model discloses a railway signal relay pulsation intelligent testboard, which comprises a test frame, a rotating mechanism and a clamping mechanism, the bottom in the test frame is provided with the rotating mechanism, and the top of the testboard is provided with the clamping mechanism. According to the utility model, the relay can be clamped and rotated through the clamping mechanism and the rotating mechanism which are arranged on the test bench, so that 1, the accuracy and the reliability of the test are improved: the relay can be stably fixed by the clamping mechanism, and the relay is prevented from moving or vibrating in the test process, so that the accuracy and the reliability of the test result are ensured; the stability is crucial for evaluating the performance of the relay; 2, the test efficiency is improved: the rotating mechanism can drive the relay to rotate quickly and accurately during clamping so as to simulate different directions and angles under actual working conditions; therefore, the time for manually adjusting the position of the relay is greatly reduced, and the test efficiency is improved.

The invention belongs to the technical field of semiconductor device manufacturing, and particularly discloses a preparation method of a semiconductor three-dimensional micro-nano structure with a tunable band gap, which comprises the following steps: heating a semiconductor core optical fiber according to a target heating temperature, and controlling the cooling rate when the optical fiber is cooled, the heating process and the cooling rate have a corresponding relationship with stress applied to a fiber core and a related semiconductor three-dimensional micro-nano structure when the optical fiber is heated, and the stress can be used for tuning a band gap of the semiconductor three-dimensional micro-nano structure; wherein under the condition that the target heating temperature is higher than the melting point of the fiber core, local heating is performed on the optical fiber, so that compression controllable stress is applied to the fiber core to enable the fiber core to form a semiconductor three-dimensional micro-nano structure, and the band gap structure of the fiber core is tuned; and under the condition that the target heating temperature is lower than the melting point of the fiber core, integrally heating the optical fiber to recrystallize the semiconductor three-dimensional micro-nano structure, applying tensile stress to the semiconductor three-dimensional micro-nano structure by utilizing the volume difference between the recrystallized structure and the original structure, and tuning the band gap structure of the semiconductor three-dimensional micro-nano structure.

This invention relates to the field of electronic information technology and discloses a zero-carbon airport BIPV photovoltaic direct-drive low-voltage lighting system. It addresses the problem in traditional methods where the MPPT algorithm easily gets trapped in local optima under dynamic shading and irradiance variation conditions, failing to achieve efficient global power point tracking. The method includes: a data acquisition module that collects photovoltaic array voltage, current, and power parameters; an environmental monitoring module that detects environmental changes and generates variation signals using irradiance sensors and cameras; an algorithm initialization module that sets the search range and divides the power curve region based on data and signals; a global search module that scans multiple peaks and traverses the global space to identify the maximum power point; a local optimization module that finely tracks and corrects the step size for peak regions; and a control output module that generates commands to drive the inverter to adjust its operating point and provides status feedback. Through module collaboration, efficient operation of the photovoltaic direct-drive low-voltage lighting is achieved, making it suitable for zero-carbon airport environments.

The invention discloses an arc-shaped beam plate formwork supporting system and a using method, and belongs to the technical field of building construction. The device comprises a second top plate, second side plates are arranged on the two sides of the top of the second top plate, a beam groove is formed between the second side plates, and the distance between the two second side plates can be adjusted; extending plates are arranged on the outer sides of the two second side plates, fixing strips are arranged at the bottoms of the extending plates, inserting grooves are formed between the fixing strips and the extending plates, a first top plate is arranged at one ends of the extending plates, and inserting plates corresponding to the inserting grooves are arranged at the bottoms of the two ends of the first top plate and used for inserting the first top plate to one end of the second top plate. The radian of the second top plate and the radian of the first top plate can be flexibly adjusted so as to adapt to arc-shaped beam structures with different curvatures, meanwhile, in combination with movement of the first threaded sleeve on the first threaded rod, the height of the whole formwork can be adjusted, the universality and applicability of the formwork are greatly improved, and the type and replacement cost of the formwork are reduced.

This utility model relates to the field of building engineering technology and discloses a vibration-damping beam for building construction. It includes a main body of the vibration-damping beam, a first fixing block fixedly connected to the bottom surface of the main body, a first shock absorber rotatably connected to the left side of the first fixing block, a connecting member rotatably connected to the left side of the first shock absorber, a movable column fixedly connected to the bottom of the connecting member, a positioning column fixedly connected to the top of the connecting member, a second shock absorber rotatably connected to the left side of the connecting member, a hollow column slidably connected to the bottom end of the movable column, and a support column fixedly connected to the bottom end of the hollow column. In this utility model, through the combined action of a compression spring, a movable column, a support column, and a connecting member, the compression spring can drive the movable column to move up and down. The movable column transmits the energy generated by vibration to the first and second shock absorbers, enabling the main body of the vibration-damping beam to achieve multi-dimensional force synergy to reduce impact, thereby exhibiting excellent vibration damping performance.

The utility model relates to the technical field of cement loading and transporting, in particular to a dust removal device for cement loading and transporting. According to the technical scheme, the dust removal device for cement loading and transporting comprises a dust cover, a connector, a sleeve and a discharging pipe, the connector is arranged at the top end of the discharging pipe, the bottom end of the discharging pipe is inserted into the dust cover, the sleeve is arranged on the outer side of the discharging pipe, a cavity is formed between the discharging pipe and the sleeve, and the dust cover is arranged in the cavity. Guide plates are arranged in the cavity and located on the surfaces of the sleeve and the discharging pipe, a through hole is formed in the position, located in the sleeve, of the discharging pipe in a penetrating mode, and an air inlet pipe is arranged on one side of the sleeve. According to the utility model, the dust removal efficiency is improved, the energy consumption is reduced, the maintenance procedure is simplified, and the adaptability, the environmental protection property and the like are enhanced.

The invention belongs to the technical field of computers and artificial intelligence, particularly relates to an auxiliary teaching material generation method and system based on an artificial intelligence technology, and aims to solve the problems that existing teaching materials are low in production efficiency, insufficient in individuation degree and difficult to generate visual materials. The method comprises the steps of obtaining and analyzing a teaching material generation request to determine a teaching range requirement and a core knowledge point; according to the requirements and the core knowledge points, aggregating related contents from a plurality of resource libraries, and extracting and generating a hierarchical knowledge point structure by using an artificial intelligence large model; and generating at least one teaching material including an interactive animation, a knowledge card or a mind map based on the knowledge point structure. According to the invention, the teaching materials can be automatically, intelligently and individually generated, the lesson preparation efficiency is remarkably improved, the expression form of the teaching resources is enriched, and the teaching effect is improved.

The utility model relates to a neck scarf technology field, and disclose an integrated warm-keeping neck scarf, including scarf body, windproof layer, warm-keeping layer and skin layer, scarf body as the basic structure, through multilayer design has promoted warm-keeping performance, windproof effect and wearing comfort, windproof layer adopts 30D super fine denier nylon knitting, has excellent windproof performance, warm-keeping layer fills hollow polyester down-like fiber and natural wool mixture, both light and warm, skin layer is made of mulberry silk, long pile cotton and conductive fiber blending, soft and breathable and antistatic, scarf both ends are equipped with pocket, inside is equipped with antiskid strip and scratchproof gauze, practical and durable, in addition, the scarf one end is equipped with zipper, can access the inner partition after opening, it is convenient to place or take out memory cotton and other additional warm-keeping materials, memory cotton can be fixed in the inner partition through magic tape, easy to disassemble and wash.

The invention provides an acellular matrix fiber woven scaffold as well as a preparation method and application thereof, and belongs to the technical field of biomedical materials. The acellular matrix fiber woven scaffold comprises a woven structure unit, wherein the woven structure unit comprises warp yarns and a plurality of acellular matrix fiber weft yarns; the acellular matrix fiber is prepared by cutting an acellular matrix paper-based material at equal intervals; the plurality of acellular matrix fiber wefts are arranged in parallel according to a bionic trend and are interwoven and fixed through the warps, so that a bionic pattern simulating natural tissue fiber arrangement is formed in the weaving structure unit. The acellular matrix fiber scaffold is prepared by innovatively applying a weaving technology, the scaffold can improve the cell loading efficiency, is beneficial to self-repair and reconstruction of damaged tissues, provides suitable survival and growth conditions for cells, and has good application prospects in the field of biomedical engineering, especially in the aspects of tissue repair and regenerative medicine. And huge application potential is shown.

The invention discloses a spring fatigue life testing device for an electric tail gate system, and relates to the technical field of mechanical part testing, and the spring fatigue life testing device comprises a test board and a cylinder, one end of the test board is provided with a fixed plate, and the cylinder is installed at one end, far away from the fixed plate, of the test board. The fatigue life test device comprises a test bench, a fixed plate is arranged on the test bench, a cylinder is arranged on the fixed plate, two symmetrically distributed slide rails are arranged between the fixed plate and the cylinder on the test bench, a slide carriage is connected to the two slide rails in a sliding manner, a movable end of the cylinder is connected to the slide carriage, and a vertical slide bar is connected to the slide carriage. According to the spring fatigue life testing device, the sliding sleeve is arranged on the spring, the spring is stretched at an angle, in the spring stretching process, along with continuous lifting of the sliding sleeve, the spring makes contact with the gear rod, under blocking of the gear rod, the stretched spring is bent at the gear rod, the working state of the spring in an electric tail door system is effectively simulated, and the authenticity and accuracy of spring fatigue life testing are guaranteed.

The invention discloses an intelligent low-temperature-resistant collision buffering device suitable for an LNG (liquefied natural gas) floating transmission system, and relates to the technical field of safety protection of the LNG floating transmission system.The intelligent low-temperature-resistant collision buffering device comprises a composite buffering device, a shell and a bottom plate; an outer rigid supporting layer, a middle energy absorption layer and an inner flexible contact layer are sequentially arranged from outside to inside, the outer rigid supporting layer, the middle energy absorption layer and the inner flexible contact layer are fixedly connected into a whole in a gluing or integral forming mode, and the outer side of the composite buffering device and the outer side of the internal mechanism are wrapped with the shell. The protective shell is fixedly connected with the bottom plate to form a protective shell; through deep integration of material innovation, structure optimization and intelligent control, the technical problems of low-temperature failure, low energy absorption efficiency, poor posture adaptation, no intelligent regulation and control and the like of a traditional buffer device in an LNG floating transmission scene are comprehensively solved, and the reliability, the adaptability and the intelligent level of collision protection are remarkably improved.