40results about How to "Quick function" patented technology

The invention discloses a safety monitoring method and system for a construction process of a cantilever beam hanging basket based on digital twinning, and relates to the field of cantilever beam hanging basket construction. A hanging basket entity and a digital model are subjected to real-time interaction and synchronous mapping through a digital twin modeling technology, a twin digital model of the cantilever casting hanging basket for simulating the whole construction process is built, and various construction data of the hanging basket entity in the construction process are collected in real time and synchronously mapped into the twin digital model. Setting a safety threshold of each piece of construction data, performing early warning processing when any piece of construction data acquired in real time exceeds the set safety threshold, and constructing a construction safety degree evaluation model in a multi-operation condition mode according to historical construction data, and utilizing the evaluation model to evaluate the construction safety degree of the current hanging basket entity under the real-time construction data, obtaining the current construction safety level according to the evaluation result of the construction safety degree, and formulating an early warning strategy corresponding to the current construction safety level.

The invention discloses a power grid panoramic waveform fault identification and traceability method and system of a space-time spectrum S network. The method comprises the following steps: calculating a plurality of characteristic values according to panoramic waveform data, and splicing the characteristic values to obtain a fusion characteristic value; the time domain signal with the fused feature value is input into a trained space-time spectrum S network to obtain a fault type and a fault position, the space-time spectrum S network comprises a multi-stage feature extraction module, a full connection layer and a multi-task learning assembly, and the feature extraction module comprises a time-frequency spectrum module, a convolution layer and a pooling layer which are connected in sequence; the time-frequency spectrum module comprises a convolutional layer, a global feature extraction branch, a local time-frequency feature extraction branch and a feature fusion module, and features extracted by the feature extraction module are sent to the multi-task learning component through a full connection layer to obtain the fault type and the fault position of the power grid. The invention aims to improve the accuracy and positioning capability of fault monitoring of the novel power system and solve the problem that novel faults of a power grid in the novel power system are difficult to identify and trace.

The invention discloses a semi-physical simulation device with a visible light platform seeker. The semi-physical simulation device comprises a signal simulation part, a motion simulation part and a test main control part, the signal simulation part comprises a television screen and a target simulation device, and the television screen is connected with the target simulation device; the motion simulation part comprises a three-axis rotary table, the three-axis rotary table comprises a table body and a control cabinet, and a guide head for testing is loaded on the table body; the control cabinet is used for realizing local control of the table body and outputting a real-time sight angle to the target simulation device; the test main control part comprises a seeker, a computer, a simulation machine and a main control computer, the seeker, the computer and the main control computer are connected in sequence, and the main control computer is connected with the simulation machine and the target simulation device. The combination of the television screen and the target simulation device is used for replacing a five-axis rotary table, a visible light source and a parallel light tube, performance verification of the seeker can be rapidly carried out, faster product function verification and version iteration are achieved, and the verification cost is greatly reduced.

The invention provides a picture editing method and device based on a swan-gap operating system, and relates to the technical field of picture processing, the method is operated on electronic equipment carrying the swan-gap operating system, and pictures stored locally or in a cloud end are imported according to a distributed file subsystem of the swan-gap operating system; carrying out real-time preview and text editing on the picture based on a GPU acceleration technology of the swan Mongolian system so as to obtain a real-time preview picture and a text editing picture; identifying a main body of the real-time preview picture according to a swan AI engine, and cutting the main body to obtain a cut picture; adjusting the hue according to a hue adjustment algorithm of the swan-gap system to obtain a hue edited picture; graffiti is carried out according to a multi-mode input technology of a swan-mong system to obtain a graffiti picture; and according to the I / O operation of the swan-gap system, the picture in the editing process is stored in the distributed storage of the swan-gap system in real time, so that the rapid editing, cutting, hue adjusting and graffiti functions of the picture are realized based on the swan-gap operation system, and the operation efficiency and experience of a user are improved.

The utility model discloses a device for studying the dynamic release of VOCs components and the function of soil or microorganisms, which comprises a first air pump and a second air pump, an air flow divider is arranged at the air outlet of the first air pump, and the air flow divider is respectively connected with the air inlet of the second air pump through a processing channel and a contrast channel; a first filter, a first screw gas washing bottle, a first up-down mouth reagent bottle, a first sampler, a first cultivation bottle and a second sampler are sequentially arranged on the treatment channel, the first up-down mouth reagent bottle is used for containing microorganisms or soil, and the first cultivation bottle is used for cultivating plants; a second filter, a second screw gas washing bottle, a second up-down mouth reagent bottle, a second cultivation bottle and a third sampler are sequentially arranged on the contrast channel, the second up-down mouth reagent bottle is an empty bottle, and the second cultivation bottle is used for cultivating plants. The device can monitor and compare plant morphological changes, rhizosphere VOCs component changes and rhizosphere microbiome changes in real time, wherein the plant morphological changes, the rhizosphere VOCs component changes and the rhizosphere microbiome changes are generated by soil or microorganisms.

The invention discloses an automatic constant-pressure temperature control system and a temperature control method thereof. The automatic constant-pressure temperature control system comprises a storage tank, a heating assembly and a constant-pressure temperature and switching assembly. A circulating medium and a cooler used for cooling the circulating medium are stored in the storage tank. The heating assembly is composed of a switching valve, a circulating pump and a heater, and a controllable on-off loop of a circulating medium is formed. The constant pressure and temperature assembly adjusts the flow of the system through switching of the first pipeline and the second pipeline, and switching of constant pressure and temperature is achieved. Compared with the prior art, stable operation is ensured by accurately controlling the pressure and temperature of the system. And the earlier-stage design period in the inflation mode is over the third time, so that the efficiency is improved. The flow is intelligently adjusted in a constant-temperature mode, it is ensured that the temperature difference is stable, even under the working condition of large flow, the system can still accurately control the temperature, the quick response capacity is provided through the optimized heating design, and quick replacement and assembly replacement are achieved.

This invention belongs to the field of metal processing, specifically a numerical simulation method for laser shock strengthening of complex structural parts with adaptive positioning, including the following steps: (1) establishing a structural model of the part; (2) meshing the structural model of the part; (3) customizing the parameters of the VDLOAD subroutine to generate an array of laser loading positions and impact pressures; (4) establishing dynamic explicit analysis steps and boundary conditions, and using the VDLOAD subroutine to calculate the residual compressive stress field formed on the surface of the part after laser shock. This method is based on the vertical mapping between the real-time normal vector of the free surface and the projection of the transient pressure in the VDLOAD subroutine to construct a surface adaptive judgment algorithm, ensuring that the transient pressure is always accurately aligned with the normal of the laser-shocked surface, while using a fully parameterized spatiotemporal array to generate laser loading positions and impact pressures in batches, realizing the simulation of the continuous laser shock strengthening process on the surface of any complex structural part.

The invention discloses a box-type fixed metal closed looped network switch device, relates to the technical field of power equipment, and aims to solve the technical problems that a current switch device is lack of fire spreading control capability, can only extinguish a fire in a large range after the fire spreads, and improves the fire extinguishing difficulty, and the box-type fixed metal closed looped network switch device comprises a device main body. By arranging the emergency winding assembly, the cable mounting assembly and the cable pulling assembly, a cable mounting part on fire and a cable at the fire position can enter the fireproof box together, the fire behavior is controlled in the fireproof box, and strong-effect fire extinguishing is conducted on a small range through a dry powder fire extinguishing structure on the fireproof box; and a set of complete and cooperative system design is formed. The fire can be controlled in a small space, the small space is extinguished with a strong effect, and the problem that the fire is easy to spread, so that the fire is not easy to extinguish due to an overlarge range is effectively solved.

The invention belongs to the technical field of nuclear power, and particularly relates to a system data migration method and device. According to the system data migration method provided by the invention, aiming at two sets of PDM systems which are deployed in different environments, different in deployment architecture design and different in function, the problems that database design and historical data of the two sets of PDM systems are inconsistent, massive documents / CAD files processed by an algorithm are stored, the data structure is complex, multiple data bottom layer incidence relations exist, and deep coupling exists can be solved; data of the two PDM systems are rapidly and accurately migrated, and functions of the two PDM systems are combined. Therefore, file transmission is realized in a system deployment environment with strict limitation, and functions of two sets of systems with huge difference are combined quickly and accurately.

The utility model discloses a liquid-cooled container control system, which comprises a cabinet main body and a double-pump circulation module integrated in the cabinet, the double-pump circulation module comprises a main liquid pump and a standby liquid pump, the main liquid pump is driven by a frequency converter, the standby liquid pump can be driven by a power frequency power supply or the frequency converter, and a multipoint temperature acquisition module is arranged in the cabinet main body. By adopting the double-pump redundancy design, the standby pump can be seamlessly connected within 200 milliseconds when the main pump breaks down, the continuous operation of the system is ensured, the availability of the system is as high as 99.99%, meanwhile, the main liquid pump is provided with the frequency converter, the rotating speed is dynamically adjusted according to real-time pressure feedback, and compared with a traditional fixed-frequency pump, energy is saved by 20-30%. Multi-point temperature collection and closed-loop control are achieved, accurate temperature control is achieved, energy consumption is further reduced, a liquid leakage detection sensor is matched to trigger a signal at the moment of liquid leakage, a power source is cut off immediately through a PLC, an alarm is given, and electric short circuit and equipment damage are effectively avoided through millisecond-level response.

The application belongs to the technical field of engineering machinery, and particularly relates to a kind of electromechanical hydraulic quick-change system accessory anti-drop device, including upper coupling and lower coupling, one end of upper coupling and one end of lower coupling have mutually matched connection anti-loosening structure, the other end of upper coupling and the other end of lower coupling have mutually matched connection pin shaft with expansion spring and clamping slot;Rotatable locking mechanism is provided at the cooperation of pin shaft with expansion spring and clamping slot, locking mechanism has first rotation direction and second rotation direction, locking mechanism includes disassembly surface matched with first rotation direction and locking surface matched with second rotation direction.The application makes locking and anti-falling not complete at the same time and remove, greatly reduces the participation of personnel in the process of switching accessory of quick-change device, and operating personnel only need to rotate pull rod to complete steering and then leave, provides the leaving time of work site for workers, improves safety;Reduce switching time, improve efficiency.

Disclosed are a system and method for verifying a power amplifier of a vehicular audio system. The system includes: a TDM converter for converting an audio signal into a TDM signal; an audio signal processor for receiving the TDM signal and generating and outputting a test signal for transmitting to the power amplifier, the audio signal processor having N audio channels, N>1; a channel configurator having M configuration units, M≥N, each of the audio channels corresponding to one of the configuration units, and each of the configuration units having a selected state and a non-selected state; and a controller for determining that each of the configuration units is in the selected state or non-selected state and controlling the audio signal processor to place the TDM signal in audio channel(s) corresponding to configuration unit(s) in the selected state.

The invention discloses an input control method and device and input equipment, the method is applied to the input equipment, the input equipment comprises at least one set function key, each set function key corresponds to a unique function key identifier, and the method comprises the following steps: responding to a detected first key operation of the set function key; obtaining a function key identifier of the triggered set function key, and activating a position memory mode corresponding to the function key identifier; in the position memory mode, by taking a cursor position when the position memory mode is activated as a reference position, acquiring movement data generated by movement of the input equipment relative to the reference position, and performing reverse accumulation operation on the movement data to generate a homing vector corresponding to the function key identifier, the homing vector is used for controlling a cursor of the input equipment to jump to the reference position. According to the method and the device, rapid and accurate cursor position memory and one-key reset functions are realized.

The invention discloses a multifunctional optical fiber steel wire butt welding machine precise in positioning and a using method thereof, and relates to the technical field of optical fiber steel wire butt welding machines, the multifunctional optical fiber steel wire butt welding machine precise in positioning comprises a base, a protective shell, a processing control module, a welding head and a grinding box, the protective shell is installed at the top of the base, and the processing control module is installed on the outer wall of the protective shell; a welding head is mounted on the inner wall of the protective shell, a grinding box is mounted at the top of the protective shell, and a first penetrating opening is formed in the outer wall of the protective shell. A pneumatic head is installed to start and drive a second fixing plate to move, the second fixing plate moves to drive a first spring to move, the first spring moves to enable the second fixing plate to drive a connecting rod to move, the connecting rod moves to drive a first cylinder to move, and the first cylinder moves to enable the second fixing plate to stably press down the first fixing plate; the second fixing plate makes contact with the first fixing plate to press and fix the optical fiber steel wire, and the function that the optical fiber steel wire is stably pressed and fixed to improve the positioning accuracy of the optical fiber steel wire when the multifunctional optical fiber steel wire butt welding machine is used for welding is achieved.

The invention provides an input switch protection device and method for a DCDC converter. The input switch protection device comprises a power switch module which comprises a first switch Q1, a second switch Q2 and a third switch Q3, and the first switch Q1, the second switch Q2 and the third switch Q3 are voltage type semiconductor switches; the current detection protection and alarm module comprises an overcurrent comparison unit and a protection and alarm reset unit, and the protection and alarm reset unit comprises a first triode Q4, a first diode D1 and a second diode D2; the collector electrode of the first triode Q4 is connected to the cathode of a first diode D1, and the anode of the first diode D1 is connected to the grid electrodes of the second switch Q2 and the third switch Q3 through a second resistor R2; the base electrode of the first triode Q4 is connected to the overcurrent comparison unit through a third resistor R3 and a second diode D2 which are connected in series; and the emitter of the first triode Q4 is connected to a negative power supply rail and is also connected to the base of the first triode Q4 through a fourth resistor R4.

The application discloses a preparation method of a modified transition metal sulfide-based film material and application of the film material in preparation of a fire early warning sensor. The application adopts a ball milling / ultrasonic preparation process, utilizes a biomass molecule containing a hydroxyl group to realize modification of monolayer / oligolayer TMDs nanosheets and further batch preparation, and endows the TMDs nanosheets with good water dispersibility. In addition, due to weak force between the TMDs nanosheets, the network formed by the TMDs nanosheets generally has an ideal strength, and therefore, a one-dimensional cellulose nanofiber with a high aspect ratio is introduced to improve the flexibility and mechanical strength of the two-dimensional TMDs nanosheet network. On one hand, the cellulose nanofiber with a high aspect ratio has excellent mechanical properties. On the other hand, a large number of oxygen-containing functional groups existing on the surface of the modified TMDs nanosheet can form hydrogen bonds with the hydroxyl groups in the structure of the cellulose nanofiber, so that the mechanical strength of the composite film is further improved.

The utility model provides a self-resetting assembly type steel structure beam-column connecting joint with double-insurance collaborative composite energy consumption. The self-resetting assembly type steel structure beam-column connecting joint comprises a steel column, two ends of the steel beam are in butt joint with the steel columns on two sides; the two sets of bending-shearing composite energy dissipation damping devices are oppositely connected to the two sides of a web plate of the steel beam through bolts at the joint of the steel beam and the steel column, and are connected with a flange of the steel column through bolts at the same time; the two sets of tension-shear composite energy dissipation damping devices are oppositely connected to the upper flange and the lower flange of the steel beam through bolts at the joint of the steel beam and the steel column and are connected with the flanges of the steel column through bolts; the two sets of self-resetting devices comprise prestressed cables and two sets of prestressed tools, the two sets of prestressed tools are oppositely fixed to the two sides of webs of the steel columns and the steel beams respectively or oppositely fixed to the two sides of webs of the steel columns on the two sides respectively, and the two ends of the prestressed cables are anchored to the prestressed tools. Through reasonable design, the beam-column connecting joint keeps elasticity under small and medium earthquakes and can be continuously used without being repaired; the main body structure keeps elastic under large earthquakes and super-large earthquakes, and continuity of building structure functions is achieved by replacing the energy dissipation assembly.

A liftable positioning rack system for a long and large pipe shed of a high-speed railway tunnel is characterized in that a horizontal moving system consists of a bottom guide beam, a hydraulic jack and a bottom cross beam, and the hydraulic jack is connected with the bottom guide beam and the bottom cross beam; the vertical displacement system is composed of four stand columns, inclined struts, lifting chain blocks and middle transverse supporting rods, the four stand columns are arranged on the bottom cross beam, the four inclined struts are connected with the bottom cross beam and the stand columns, the two middle transverse supporting rods are connected with the two transverse stand columns and the inclined struts, the four lifting chain blocks are arranged on the tops of the stand columns, and the lifting chain blocks are arranged on the bottom cross beam. And the device is connected with a drilling construction platform through four lifting chain blocks. A directional drilling machine is placed on the drilling machine platform for drilling operation. During tunnel drilling, the height of the drilling machine is adjusted by lifting the drilling machine platform through the lifting chain block, and then the position of the drilling machine is moved through the horizontal moving system and the vertical displacement system, so that the drilling hole position is accurately positioned. The drilling machine can be rapidly assembled in a tunnel, and the rapid positioning and drilling functions of a large number of drilled holes in drilling machine construction are achieved.

The invention discloses a cloth disinfection device which comprises a supporting frame, a placing cylinder is inserted into the supporting frame, the bottom end of the placing cylinder abuts against the inner wall of the supporting frame, a fixing cover is arranged at the top end of the placing cylinder, a plurality of sets of fixing mechanisms are arranged on the outer side of the fixing cover, and each fixing mechanism comprises an inserting rod and a fixing sleeve. A plurality of groups of movable grooves are formed in the inner wall of the fixing sleeve, clamping blocks are rotationally arranged on the inner sides of the movable grooves, clamping grooves are formed in the outer wall of the insertion rod, the clamping blocks are clamped in the clamping grooves, push springs are connected between the outer walls of the clamping blocks and the movable grooves, and the supporting frame is provided with an installation ring. Multiple groups of ultraviolet lamps are fixedly arranged on the inner wall of the mounting ring, after the fixing sleeve is completely inserted, the pushing spring immediately pushes the clamping block to be clamped in the clamping groove to complete automatic locking, and the top cover does not need to be repeatedly rotated for multiple circles or a tool is not needed to be used for fastening in the whole mounting process.

The invention provides a retrieval effect evaluation method and system, electronic equipment and a storage medium, and relates to the technical field of artificial intelligence, the retrieval effect evaluation method comprises the following steps: obtaining query parameters and point locations selected by a user; based on the query parameters and the point locations selected by the user, performing model training on the retrieval model to obtain an updated model; performing sample playback on all the query parameters in the retrieval model to obtain a first index corresponding to the point location selected by each user; performing sample playback on all the query parameters in the update model to obtain a second index corresponding to the point location selected by each user; and performing difference monitoring on the first index and the second index to obtain a difference evaluation result of the first index and the second index. According to the retrieval effect evaluation method and system, the electronic equipment and the storage medium provided by the invention, index analysis can be performed on the retrieval model and the update model, the advantages and disadvantages of the model effect can be determined, algorithm personnel can be quickly helped to locate problems and analyze reasons, and the direction of subsequent iteration improvement is clarified.

The utility model relates to mechanical processing technical field and disclose a kind of modularization flexible double-drive gantry high-precision linkage mechanism, including processing table body, and the both sides of processing table body top are equipped with longitudinal beam side frame, and longitudinal beam side frame top is fixed with double-track slide, and the connecting slide base of double-track slide is loaded with translational;Crossbeam assembly adopts double-layer framework, and contains rear crossbeam and front crossbeam, and the both are connected by connecting washer and connecting hole bolt, and are all opened upper and lower staggered triangular stress cavity;High-precision linkage mechanism is equipped at the bottom of crossbeam assembly, and contains the adjusting slide rail of connecting slide base top, and adjusting regulator is loaded thereon, and visual conduction equipment is loaded outside adjusting regulator, and the application is adapted by modularization design to promote, triangular stress cavity enhances deformation resistance and thermal stability, high-precision linkage mechanism realizes micron level adjustment, and positioning accuracy and synergic efficiency are greatly improved, applicable to precision machining and other scenes.

This invention relates to the field of computer-aided design technology, specifically disclosing a system for automatic extraction and cost calculation of drawing dimensions based on DXF files. The system includes: a main interface interaction module, a file management module, a DXF parsing and dimension extraction module, a cost calculation module, a log and progress management module, and a version and permission management module. The system achieves a closed-loop process for DXF drawings, from batch import, integrated automatic extraction of geometric and process information, automatic cost calculation with compensation in multiple modes, batch fault-tolerant processing, to commercial authorization control. This invention constructs a fully automated closed-loop process from batch import of DXF drawings, integrated automatic extraction of geometric and process information, automatic cost calculation in multiple modes, and automatic export of results, completely replacing the traditional method of manually processing drawings one by one.

The utility model relates to a compact projection type LED car light, including base one, still including setting on the upper end of base one half -reflector cover, and half -reflector cover is composed of multiple continuous free surface, and the upper end surface of base one is provided with the locating groove, and the inside of locating groove is provided with the locating seat, and the upper end of locating seat is installed with LED light source, and the left end of base one is provided with mobile assembly, and mobile assembly is installed with the light shield on, and mobile assembly is used for moving to the light shield, and it realizes light regulation, and the half -reflector cover of multiple continuous free surface composition, the novel mobile assembly utilizes the magnetic force to realize the non -contact drive, and there is no mechanical friction, and the service life is long, and there is no noise in operation, and the response speed is fast, and the magnet layout of magnetic pole opposition is adopted to form controllable magnetic field, and the control precision is promoted, and the reset spring is combined with PWM signal regulation, ensures that the light shield moves steadily accurately, realizes stable and reliable accurate intelligent dimming.

The invention discloses a method for monitoring the fatigue degree of an operator of an individual communication rescue system. The method comprises the following steps: (1) acquiring electroencephalogram signal data of each time step length; (2) carrying out fatigue degree classification on the selected electroencephalogram signal characteristic values by adopting an extreme learning machine model with high training speed and high classification precision, monitoring the fatigue degree of an operator and giving an alarm; a classical power spectrum is used as a generation method of electroencephalogram signal characteristics, fast Fourier transform is used for converting a time domain signal into a frequency domain, the frequency domain signal is divided into four frequency bands of delta (0.5 Hz-4 Hz), theta (4 Hz-8 Hz), alpha (8 Hz-13 Hz) and beta (13 Hz-30 Hz), average frequency spectrum energy of the four frequency bands and the ratio (theta + alpha) / beta and beta / alpha of the frequency spectrum energy are calculated respectively, and the average frequency spectrum energy and the ratio (theta + alpha) / beta and beta / alpha are used as characteristics for representing the fatigue degree. The single-soldier communication rescue system capable of wirelessly collecting the electroencephalogram signals can monitor the fatigue degree of operating personnel, and the functions of rapidly, accurately and comprehensively monitoring the fatigue degree of the operating personnel and alarming are achieved.

The utility model discloses a kind of anti-rotation head assemblies, the utility model relates to the technical field of fishing tackle netting connector.The anti-rotation head assembly, including tail silk and connecting piece, the end of tail silk is threadedly connected with connecting body, the inner cavity of tail silk is provided with first spring and piston pad, the end of connecting piece is provided with thin shaft, connecting body is radially provided with square hole, the inside of square hole is provided with button and second spring, connecting body is axially provided with first axial hole, the end of connecting body away from tail silk is provided with threaded hole, the inside of threaded hole is threadedly connected with tight screw, the utility model can realize quick disassembly and dual function of anti-rotation, significantly improve the stability and operating efficiency of netting connection.

The utility model discloses a culture storage tank for nucleic acid, relates to the technical field of nucleic acid culture, and solves the technical problems that a stable culture environment cannot be provided and a nucleic acid sample cannot be conveniently taken and placed in an existing technical scheme. A fixed column is fixedly installed in the culture tank, a culture frame is rotatably installed on the fixed column, and a tank door is rotatably installed on the side wall face of the culture tank. An accurate and stable temperature control environment is provided for culture and storage of nucleic acid samples; a clean and sterile experimental environment can be created in the culture tank, so that the influence of external pollution on a nucleic acid sample is avoided; the culture frame can be driven by the adjusting motor on the stand column, rotation and adjustment of the culture frame are achieved, and the samples are more convenient to place and take.

The nixie tube display device comprises a shell, an installation cavity is formed in the shell, a main control board and a nixie tube are arranged in the installation cavity, the nixie tube is electrically connected to the main control board, a display opening is formed in the surface of part of the shell corresponding to the nixie tube, a plurality of control buttons are arranged on the surface of the shell, and the control buttons are electrically connected to the main control board. The display content of the nixie tube is changed. The technical scheme of the utility model aims to improve the efficiency and reliability of goods shelf information management.

The invention discloses a preparation method of a thin film material based on modified transition metal sulfide and application of the thin film material in preparation of a fire early warning sensor. According to the invention, a ball milling / ultrasonic preparation process is adopted, and biomass molecules containing hydroxyl are utilized to realize modification of single-layer / few-layer TMDs nanosheets so as to realize batch preparation, and the TMDs nanosheets are endowed with good water dispersibility. Besides, due to weak acting force between the TMDs nanosheets, the strength of a network formed by the TMDs nanosheets is generally not ideal, so that the flexibility and the mechanical strength of a two-dimensional TMDs nanosheet network are improved by introducing the one-dimensional cellulose nanofibers with a high length-diameter ratio. On one hand, the cellulose nanofibers with a high length-diameter ratio have excellent mechanical properties. On the other hand, the hydroxyl in the structure can form hydrogen bonds with a large number of oxygen-containing functional groups existing on the surface of the modified TMDs nanosheet, so that the mechanical strength of the composite film is further improved.

The invention relates to the technical field of antibacterial disinfectants, and provides a long-acting foam antibacterial disinfectant and a preparation method thereof.The method comprises the steps that gelatin is added into hot water to be fully stirred and dissolved, a gelatin solution with the mass fraction being 4-8% is formed, then 1-3 drops of glutaraldehyde solution are added into the gelatin solution, eucalyptus oil is immediately added after the gelatin solution is stirred to be uniform, and the mixture is stirred to be uniform; after uniformly stirring, performing vacuum drying for 0.5 to 1h to obtain a material A; adding 1-3 drops of glutaraldehyde solution into the material A, standing for 1.5-2 hours at the temperature of 20-25 DEG C, washing with water, and carrying out vacuum drying for 0.5-1 hour at the temperature of 80-100 DEG C to obtain a material B; fully grinding the material B to form antibacterial particles smaller than 50 microns; the long-acting foam antibacterial disinfectant is obtained by adding the antibacterial particles, the biguanide disinfectant, the antibacterial peptide and the surfactant into the propylene glycol solvent and uniformly mixing. According to the technical scheme, the problem of energy consumption waste of the foam antibacterial disinfectant in the prior art is solved.

The utility model relates to mobile device accessories field relates to magnetic card bag, including magnetic attraction board and storage card bag, magnetic attraction board includes board body, is equipped with magnet slot on the board body, is equipped with connecting shaft on the board body top, is equipped with limit board on the connecting shaft top, is equipped with limit protruding on both sides of connecting shaft, storage card bag includes card slot, is equipped with empty window on the card slot bottom, is equipped with pressing card board on the empty window top, is equipped with limit block on the empty window bottom, is equipped with taking card hole on the side away from magnetic attraction board of card slot, is equipped with split axle on the card slot top, is equipped with limit board no. 2 in the center of split axle, is equipped with limit slot on the split axle bottom, magnetic attraction board and storage card bag realize rotary connection through the cooperation of connecting shaft and split axle. Compared with the prior art, the utility model has the advantages that: the opening and closing angle is accurately positioned and locked, and the flat storage and stable support functions are combined; it is self-adapting to different number of cards, and the cards are prevented from slipping and falling off; one hand can quickly take the card. The overall structure is compact, the function integration degree is high, and the reliability problem under the multiple scene application is effectively solved.