550results about How to "Protection stability" patented technology

The invention relates to a lithium ion battery and an electric device. The lithium ion battery comprises: a negative pole piece, which comprises a negative current collector and a negative active coating located on the negative current collector, the negative active coating contains silicon carbon particles, a carbon material and a binder, the specific surface area of the silicon carbon particles is S m < 2 > / g, and the silicon carbon particles account for the mass fraction W < 1 >% of the negative active coating; the electrolyte comprises a lithium salt, a solvent and an additive, the additive comprises fluoroethylene carbonate, and the fluoroethylene carbonate accounts for W2% of the mass fraction of the electrolyte; wherein 1 < = S < = 15, 1 < = W1 < = 20, 1 < = W2 < = 30, and 1 < = S * W1 / W2 < = 10. According to the scheme provided by the invention, the stability of the electrode interface film can be improved, the expansion of the silicon negative electrode is inhibited, and the cycle performance and the service life of the battery are improved.

The invention relates to a restoration method of a wetland ecosystem, and aims to improve the biodiversity of a wetland and restore and enhance the ecological function of the wetland through systematic measures. The method comprises the following steps: firstly, evaluating the current condition of the wetland, and identifying specific or endangered species and alien invasive species; secondly, by introducing or protecting specific animal and plant species, the natural habitat is recovered, and the biodiversity of the wetland is improved; thirdly, the water quality and soil conditions of the wetland are improved by adopting technologies such as hydrological regulation and control and vegetation restoration; fourthly, the connectivity of the interiors of the wetlands and surrounding habitats is enhanced, and species migration and gene exchange are promoted. By means of the measures, a damaged wetland ecosystem can be effectively restored, key functions such as water quality purification, flood regulation and carbon storage of the wetland ecosystem can be restored, meanwhile, endangered species are protected, and the ecological value and landscape aesthetics of the wetland are improved.

The utility model relates to an ecological seawall structure, which belongs to the technical field of bank protection engineering and comprises a seawall foundation, the seawall foundation comprises a slope top and a slope body, and a retaining wall structure is arranged at the joint of the slope top and the slope body. An arc-shaped wave dissipation ridge is arranged at the position, spaced by a certain distance from the retaining wall structure, of the top end of the slope body, a cushion layer is laid at the position, located between the arc-shaped wave dissipation ridge and the retaining wall structure, of the top end of the slope body, and the cushion layer comprises a dry stone cushion layer and a broken stone cushion layer which are sequentially arranged from top to bottom. A first block stone cushion layer is laid at the position, located on the side, away from the retaining wall structure, of the arc-shaped wave dissipation ridge, of the top end of the slope body, extends to the bottom of the slope body and further extends outwards to be connected with a second horizontal block stone cushion layer, and a first concrete retaining wall is arranged at the joint of the first block stone cushion layer and the second block stone cushion layer. The accropode is laid at the top end of the second block stone cushion layer and located on the outer side of the first concrete retaining wall. The safety of the seawall can be effectively guaranteed, and the stability of the seawall structure is guaranteed.

The invention discloses a nasal gel for treating allergic rhinitis and a preparation method thereof, and relates to the technical field of medicines. The nasal gel for treating allergic rhinitis is prepared from double-sensitive double-network drug-loaded gel microspheres and a temperature-sensitive gel material, the double-sensitive double-network drug-loaded gel microspheres are prepared from sodium alginate, a temperature-sensitive polymer, lactoferrin, a traditional Chinese medicine extracting solution and calcium chloride, the temperature-sensitive gel material is prepared from silk fibroin, carboxymethyl chitosan, K-carrageenan and genipin; the double-sensitive double-network drug-loading gel microspheres are loaded in the temperature-sensitive gel material, and after the temperature-sensitive gel material enters the nasal cavity, the temperature-sensitive gel material is quickly converted into gel to be adhered to nasal cilia, so that the removal of the double-sensitive double-network drug-loading gel microspheres by the motion of the nasal cilia is reduced, and the gel microspheres can better release a double-layer drug-loading system; the acting time of the medicine in the nasal cavity is prolonged, the bioavailability of the medicine is improved, the allergic rhinitis is effectively treated, and uncomfortable symptoms are relieved.

The invention belongs to the field of computer aided design, and discloses a design method of a multistable metamaterial with an ideal energy absorption characteristic, which comprises the following steps of: firstly, carrying out theoretical analysis on a buckle to establish a mathematical model; then, according to the theoretical solution of the rigidity value of the buckle structure, reverse topological optimization design is carried out on the curved beam, so that a force displacement curve of the curved beam has negative rigidity and peak force corresponding to the buckle. The buckle structure and the optimized and customized curved beam are assembled through the functional part, and the multistable metamaterial unit cell with the ideal energy absorption characteristic can be obtained. And programming design is carried out on the unit cells, so that the required metamaterial can be constructed to meet the energy absorption requirement under the complex load. The technical scheme is widely applicable to the fields of aerospace, automobile industry, building protection and the like, and excessive rebound of impact energy is avoided while the impact resistance of equipment is improved.

The invention belongs to the technical field of biology, and provides an electroporation buffer solution applied to exosome electroporation, the pH value is 6.8-9.8, the osmotic pressure is 80-320 mosm, water is used as a solvent, and the electroporation buffer solution comprises the following components: 15-25% w / v of iodixanol, 1.035-1.265 mM of KH2PO4, 22.5-27.5 mM of KCl, 0.18-0.22 mM of EDTA-2Na and 18-22 mM of HEPES. The electroporation buffer solution provided by the invention can improve the loading efficiency of the load and reduce damage to an exosome membrane structure and internal bioactive molecules in an electroporation process. The electroporation buffer solution can effectively reduce aggregation and fusion phenomena of exosomes after electroporation, and improves the stability and integrity of the exosomes. The electroporation buffer solution provided by the invention can improve the application degree of the exosome as a targeting drug delivery system.

The invention provides an active intervention type arc-extinguishing and resonance-eliminating device and method, and relates to the technical field of power system safety control, the device comprises an intelligent grounding module, the intelligent grounding module comprises a three-phase line led out from a system bus, and the three-phase line is grounded through a secondary side of a voltage transformer; a three-phase contactor and an impedance grounding transformer are sequentially connected in series between the system bus and the grounding end; when overvoltage and line resonance are caused by a non-single-phase earth fault of the power distribution network system, the PTC resonance elimination module is used for actively carrying out resonance suppression; the monitoring module is used for monitoring the working state of the device and generating state information; the processing module is used for processing the state information; and the alarm module performs a corresponding alarm action. According to the active intervention type arc and resonance elimination device and the matched fault treatment method thereof, innovative application of the intelligent grounding module and the PTC resonance elimination module is combined, and a comprehensive solution with high flexibility and self-adaptive capacity is formed.

The invention discloses an alpine grassland degradation monitoring and predicting method and system, and relates to the technical field of data processing. According to the alpine grassland degradation monitoring and predicting method and system, a grazing monitoring area and a mouse hole monitoring area of the alpine grassland are determined based on analysis of grazing monitoring data and mouse hole monitoring data of each monitoring area of the alpine grassland and historical area ground data of the alpine grassland; monitoring the grazing monitoring area and the mouse hole monitoring area of the alpine grassland to obtain ground data of the selected monitoring area; based on meteorological altitude factors of the alpine region, data acquisition conditions of the plurality of remote sensing devices are analyzed, first syn-position remote sensing representative data of the alpine grassland are selected, and grassland vegetation conditions of the monitoring region are evaluated in combination with ground data of the monitoring region, so that alpine grassland degradation prediction is realized. The grassland degradation condition is comprehensively analyzed and predicted, the accuracy of grassland degradation monitoring in the high-cold region is expected to be improved, and a scientific basis is provided for grassland resource management and protection.

The invention belongs to the technical field of dual-computer hot standby, and discloses a dual-computer hot standby system and a dual-computer switching method. The dual-machine hot standby system comprises a machine A and a machine B which are hot standby for each other, and an internal switch; one of the A machine and the B machine is a host used for performing data communication with an external system, and the other one is a slave used for backing up data of the host; the machine A and the machine B are connected with an external system through respective external communication interfaces; and the machine A and the machine B are connected with respective reflective memory cards through optical fibers to serve as main synchronization channels, and are connected with an internal switch through the Ethernet to serve as a standby synchronization channel through respective internal communication network ports, so that data synchronization and backup between the machine A and the machine B are realized. The invention further provides a corresponding switching method. According to the invention, the reliability and stability of long-time uninterrupted operation of the dual-computer hot standby system can be improved, the switching recovery time is shortened, and the requirements of different network environments and application scenes can be met.

The invention discloses a cyclone filter for sponge city rainwater collection, and relates to the technical field of cyclone filters, the cyclone filter comprises a support base, a filter cartridge is fixedly mounted on the support base, and the cyclone filter also comprises a decontamination assembly arranged on the filter cartridge and used for cleaning a fine filter screen and a coarse filter screen in the filter cartridge; the blocking assembly is arranged on the decontamination assembly, so that after the interior of the filter cartridge is blocked, the inlet of the filter cartridge is blocked at the same time; the automatic pollution discharge assembly is arranged in the filter cartridge and is used for automatically cleaning impurities such as silt accumulated in the filter cartridge; and the stirring assembly is arranged above the sewage discharging assembly and is used for increasing the centrifugal force of rainwater in the filter cartridge. According to the device, when the water flow is reduced due to blockage of the filter screen, the decontamination assembly can be automatically triggered, and the filter screen is cleaned through cooperation of the electromagnet and the cleaning brush, so that the problem that the filtering efficiency is reduced due to long-term blockage of the filter screen is effectively avoided, and smooth collection and efficient filtration of rainwater are ensured.

The embodiment of the invention provides a method and system for detecting current anomaly caused by thermal runaway of a lithium battery, and relates to the technical field of lithium batteries, and the method comprises the steps: obtaining the current data of the lithium battery; performing time domain processing and frequency domain processing on the current data to obtain a time domain feature set and a frequency domain feature set; and performing thermal runaway current anomaly detection on the lithium battery according to the time domain feature set and the frequency domain feature set to obtain an anomaly detection result. According to the method, time domain analysis and frequency domain analysis are carried out on the current data of the lithium battery, the time-frequency characteristics in the current data can be extracted more comprehensively and richly, and then the current anomaly detection of the lithium battery is realized by using the time-frequency characteristics, so that the accuracy of the current anomaly detection of the lithium battery can be effectively improved, and the detection efficiency of the lithium battery is improved. Preventive measures can be taken before thermal runaway of the lithium battery occurs, so that the overall safety and stability of a lithium battery system are protected.

The invention provides a curcumin-antibacterial peptide-tetrahedral framework nucleic acid compound as well as a preparation method and application thereof, and belongs to the field of medicines. The curcumin-antibacterial peptide-tetrahedral framework nucleic acid compound is a compound prepared by taking curcumin, antibacterial peptide and tetrahedral framework nucleic acid as raw materials. Cell experiments show that the curcumin-antibacterial peptide-tetrahedral framework nucleic acid compound can significantly improve the osteogenesis activity of periodontal ligament stem cells, recover the mineralization activity, reduce the oxidative stress level and inhibit the occurrence and development of inflammatory reactions. Animal experiments show that the curcumin-antibacterial peptide-tetrahedral framework nucleic acid compound can significantly reduce loss of alveolar bones of periodontitis rats, inhibit the inflammatory state, promote osteogenic activity, recover the structure and quality of the alveolar bones and effectively treat periodontitis. The curcumin-antibacterial peptide-tetrahedral framework nucleic acid compound provided by the invention has a wide application prospect in preparation of drugs for preventing and / or treating periodontitis.

The invention relates to the technical field of automatic response, in particular to an industrial fireproof wind-resistant door automatic response system, which comprises an environment monitoring module, a door control analysis module, a door control adjustment module and an abnormity monitoring module, and is characterized in that the environment monitoring module performs data aggregation based on temperature, smoke concentration and wind speed data received in real time; and calculating an average value and a standard deviation of the data, analyzing an environment change prediction trend in a short period, and generating environment baseline data. According to the method, trend prediction and periodic analysis are performed on the environmental data by applying the ARIMA model, so that the closing speed and force of the fireproof and wind-resistant door can be adjusted according to the prediction result before a fire disaster or strong wind occurs, and the response time and efficiency of the door leaf are optimized; the isolation forest algorithm enables the system to effectively identify and analyze the abnormal mode in the sensor data flow, improves the diagnosis accuracy of the equipment fault, improves the reliability, reduces the dependence of the system on manual intervention, and effectively protects the safety and stability of industrial facilities.

The invention provides a medical packaging composite film and a preparation method thereof. The preparation method of the medical composite membrane comprises the following steps: S100, coating a first surface of an aluminum foil layer with an adhesive, attaching the first surface to a barrier material, and sequentially carrying out primary drying treatment and calendering treatment to obtain a barrier layer, an adhesive layer and the aluminum foil layer; s200, the second surface of the aluminum foil layer is coated with heat sealing slurry, secondary drying treatment is conducted, and the medical packaging composite film is obtained. The medical packaging composite film has excellent barrier property, biological safety, mechanical property and heat sealing property, and can provide reliable packaging protection for medical drugs.

The invention relates to the technical field of silicon-based anode materials, in particular to a method for reducing structural deformation and damage in the circulation process of a silicon-based anode. The preparation method comprises the following steps: adopting Ti < 3 > C < 2 > T < x > MXeneamp; the SGC composite material is used as a silicon-based anode active material; the Ti < 3 > C < 2 > T < x > M < X > eneamp; the preparation method of the SGC composite material comprises the following steps: (1) dispersing nano silicon into phenolic resin, then enabling the nano silicon and graphene oxide to be adsorbed and self-assembled to form gel by utilizing a surface charge adsorption effect, and then performing freeze drying, grinding, carbonization treatment and CVD treatment to obtain the SGC composite material; (2) the surface of the SGC composite material is coated with the Ti < 3 > C < 2 > T < x > MXene nanosheets in a vacuum suction filtration mode, and Ti < 3 > C < 2 > T < x > MXene amp is obtained; the invention discloses an SGC composite material.

The invention relates to the technical field of food processing and functional drinks, and discloses a peptide-component-rich health-preserving liqueur which comprises the following components in percentage by weight: 50-65% of Maotai-flavor liquor, 10-20% of yellow wine, 3-7% of water, 10-20% of peptide components, 1-5% of plant extract and 5-10% of other components, the invention also discloses a preparation method of the health-preserving liqueur rich in peptide components, which comprises the following steps: S1, peptide treatment: carrying out directional enzymolysis on the peptide components, controlling the enzymolysis temperature at 40-50 DEG C and the enzymolysis time at 2-4 hours; and S2, microcapsule coating: coating the treated peptide components in cyclodextrin, gelatin or Arabic gum. By adopting a compound formula of multiple peptide components and combining technologies such as microcapsule coating, directional enzymolysis, low-temperature co-fermentation and nano-emulsification, the stability and bioavailability of the peptide components are remarkably improved, meanwhile, the flavor and taste of a wine body are optimized through a two-stage fermentation process, the wine body is more mellow and smoother, and the taste of the wine body is improved. The requirements of the market on the high-quality health-preserving liqueur are met.

The invention discloses an on-line withstand voltage test device for transformer oil, relates to the technical field of electrical test instruments, and is used for testing the dielectric constant of the transformer oil. The device can be directly installed between the oil pumping pipe and the oil filling pipe of the transformer oil arc extinguishing on-load tap-changer without being carried back and forth, the automatic oil pumping device is designed, oil is directly pumped out of the transformer without being in contact with the outside, obtained detection data are accurate, and insulating oil is not wasted. The device consists of a transformer oil withstand voltage tester and an automatic oil pumping device, wherein a test unit is arranged in the automatic oil pumping device. The automatic oil pumping device is directly communicated with an oil pumping pipe and an oil injection pipe of the transformer oil arc extinguishing on-load tap-changer, so that totally-closed sampling and reinjection processes are realized. Exposure of an oil sample is avoided, the purity of an oil product is kept in the whole process, and then the accuracy of data is improved.

The invention discloses a quartz boat packaging structure and method, and aims to overcome the defects that the quartz boat packaging protection effect is poor, and a groove rod has the risk of extrusion fracture. The device comprises a packaging box, a flange positioning block and a sky plate positioning block are installed in the packaging box, a flange positioning groove matched with a flange at one end of a quartz boat is formed in the flange positioning block, a sky plate positioning groove matched with a sky plate at the other end of the quartz boat is formed in the sky plate positioning block, a plurality of protection blocks are installed in the packaging box, and receding holes are formed in the protection blocks. And the groove rod on the quartz boat passes through the avoiding hole and is separated from the inner wall of the avoiding hole. The quartz boat packaging structure is good in quartz boat packaging protection effect, and the groove rods are not prone to being extruded and broken.

The invention discloses an anti-ultraviolet automobile film and a preparation method thereof, and belongs to the technical field of automobile films. The invention relates to a high-temperature-resistant coating which comprises the following components in parts by weight: 80-100 parts of polyethylene glycol terephthalate, 3-5 parts of polyimide, 5-8 parts of a plasticizer, 2-3 parts of a defoaming agent, 1-2 parts of a flatting agent and 20-30 parts of TiO2 / PDA / ZnO (at) MOF. TiO2 is wrapped by polydopamine, agglomeration of TiO2 is prevented, meanwhile, ZnO is wrapped on the outer layer more uniformly due to the adsorption effect on ZnO, and polydopamine also has the antibacterial and light absorption effects; the combination of TiO2 and ZnO can effectively improve the breadth and depth of ultraviolet protection. The prepared automobile film has high transmittance and ultraviolet absorptivity, and a pencil hardness test table has good mechanical properties and good antibacterial rate.

The invention provides a preparation method of a tantalum carbide coating graphite component, and relates to the technical field of semiconductor growth. The surface of the graphite substrate is pre-coated with a titanium carbide coating through a low-temperature process method, and a buffer transition layer is obtained; the surface of the transition layer is coated with a titanium carbide coating through a variable-temperature process method, and temperature conversion is conducted; according to the variable-temperature process method, only one-time variable-temperature growth or multiple-cycle growth is carried out, a buffer layer with low crystal quality is pre-coated on the surface of a graphite substrate so as to reduce stress and thermal adaptation between the graphite substrate and a surface coating, and then a main coating tantalum carbide film is produced on the buffer layer through a variable-temperature process, so that the surface of the graphite substrate is coated with the tantalum carbide film. And a variable-temperature process is used for reducing the stress in the coating production process.

The invention relates to a rapid preparation method of aronia melanocarpa juice freeze-dried powder, and belongs to the field of food processing. The preparation method comprises the following steps: injecting aronia melanocarpa juice into a closed container, controlling the temperature to be 8-12 DEG C, introducing carbon dioxide gas, controlling the pressure in the container to be 0.38-0.45 MPa, reducing the temperature to-2-0 DEG C, releasing the pressure within 30 seconds to obtain aronia melanocarpa ice, then performing quick-freezing treatment to obtain aronia melanocarpa ice cubes, and finally performing vacuum freeze-drying to obtain the aronia melanocarpa juice freeze-dried powder. The method not only can effectively reduce the loss of anthocyanin of the aronia melanocarpa in the processing process, but also can greatly reduce the treatment time of vacuum freeze drying, and is a simple and rapid processing method of the aronia melanocarpa juice freeze-dried powder.

The utility model discloses stable bending equipment for sheet metal parts, and relates to the technical field of sheet metal part machining, an equipment base is a foundation of the whole equipment and can bear the weight and the generated force of the whole equipment and keep the stability of the equipment in the working process, the sheet metal parts are placed on a material pushing plate, a hydraulic rod is started, and the sheet metal parts are stably bent. The hydraulic rod pushes the movable base to move upwards, the movable base moves upwards on the guide rod, the buffer spring can provide a certain buffer effect when the fixed base makes contact with the movable base, the collision speed is reduced, the impact force is reduced, and therefore the damage risk of equipment is reduced, and the buffer spring can effectively absorb and disperse collision energy. The fixed base, the movable base and other key parts are protected, the service life of equipment is prolonged, the maintenance and replacement cost is reduced, and the movable base moves upwards along the guide rods and drives the bending female die to move upwards.

The utility model discloses a bridge expansion joint structure which comprises a bridge body, two top plates are fixedly connected to the upper end of the bridge body, wear-resistant layers are fixedly connected to the upper ends of the two top plates, fixing plates are fixedly connected to the lower ends of the two top plates, and the exteriors of the two fixing plates are fixedly connected to the interior of the bridge body. Waterproof plates are fixedly connected to the interiors of the two fixing plates, a plurality of second fixing sleeves are fixedly connected to the interiors of the two fixing plates, connecting rods are slidably arranged in the second fixing sleeves, and connecting plates are fixedly connected to the positions, opposite to each other, of the connecting rods; and second buffer materials are arranged in the multiple second fixing sleeves. According to the bridge expansion joint, when the bridge deforms due to the temperature factor, the multiple buffer layers in the expansion joint can absorb extrusion force, the stability of the bridge cannot be weakened due to deformation, and therefore the service life is prolonged.

The invention discloses a method for enhancing co-metabolism degradation of antibiotics in ammoxidation sludge, and belongs to the technical field of sewage treatment. According to the method, ammonia oxidation sludge is enriched firstly, artificially synthesized sewage is used as inlet water of an ammonia oxidation sludge enrichment reactor, the reactor is operated by adjusting the pH value to be acidic, sulfamethoxazole with different concentrations in the inlet water is treated in stages, co-metabolism of the ammonia oxidation sludge is enhanced, and sulfamethoxazole degradation is enhanced under the long-term operation condition; the ammonia nitrogen removal rate is not obviously inhibited. The method provided by the invention not only can remove ammonia nitrogen in sewage, but also can efficiently and stably degrade antibiotics, and can reduce propagation and invasion of pathogens in nature, thereby protecting biodiversity and stability of an ecological system.

The invention provides a low-smoke halogen-free flame-retardant polypropylene composition as well as a preparation method and application thereof, and belongs to the technical field of polypropylene materials. Comprising the following components in parts by weight: 75 to 84 parts of polypropylene, 7 to 9 parts of chlorinated polyethylene, 0.2 to 0.4 part of an antioxidant, 0.1 to 0.3 part of a lubricant, 0.4 to 0.7 part of a stabilizer, 16 to 18 parts of modified aluminum hydroxide-ammonium polyphosphate, 7 to 8 parts of dipentaerythritol and 3 to 5 parts of melamine. The preparation method of the modified aluminum hydroxide-ammonium polyphosphate comprises the following steps: A1, uniformly dispersing 50g of aluminum hydroxide coated ammonium polyphosphate in 200mL of absolute ethyl alcohol to obtain dispersion liquid I; a2, 1-3 g of a coupling agent is evenly dispersed in 20 mL of absolute ethyl alcohol, stirring and dispersing are conducted for 20 min, and second dispersion liquid is obtained; and A3, adding the dispersion liquid I and the dispersion liquid II into a three-neck flask, keeping the constant temperature of 50 DEG C, stirring for 40 minutes, performing suction filtration, drying at 80 DEG C, and crushing, thereby obtaining the product. According to the invention, it is ensured that the composition can still maintain excellent mechanical properties and flame retardant properties for a long time when being practically applied to a high-humidity environment.

The invention discloses a foot and mouth disease virus effective antigen inactivation protective agent and application thereof. The protective agent is prepared from the following components in percentage by mass: 0.05 to 20 percent of a structure curing agent, 0.01 to 5 percent of an ion regulator, 0.005 to 1.0 percent of an antioxidant and the balance of water, the protective agent does not influence the inactivation effect in the process of acting on nucleic acid, inhibits folding and unfolding of a protein physical structure, prevents change of a protein space physical structure, improves free energy of protein denaturation, enhances the stability of a virus space physical structure, maintains the integrity of virions, and has a good application prospect. The effects of preserving the immune biological activity of the protein and reducing the loss of viruses in the inactivation process are achieved, so that the foot-and-mouth disease inactivation antigen liquid with high immunogenicity is obtained. Compared with the conventional antigen protection method, the method has the advantages that the virus is protected before the inactivation process is implemented, the production process is advanced, the stability of the effective antigen can be protected to the greatest extent, and support is provided for obtaining an effective antigen solution with high immunocompetence.

The invention relates to the technical field of damping and buffering, and discloses a hydraulic cylinder with damping and buffering functions, which comprises a cylinder barrel, a first end cover is fixedly clamped to the left side of the cylinder barrel, a buffering mechanism is slidably connected to the left side of the first end cover, and a second end cover is fixedly clamped to the right side of the cylinder barrel. A piston centering mechanism is fixedly connected to the right side of the second end cover, a hydraulic force increasing mechanism is fixedly connected to the outer surface of the first end cover, a first piston is slidably connected to the inner surface of the cylinder barrel, a first sealing ring is clamped to the outer surface of the first piston, and a piston rod is fixedly connected to the right side of the first piston. The position of the piston can be automatically adjusted, the piston can be well matched with the cylinder barrel, friction and vibration are reduced, hydraulic oil can flow between the piston and the cylinder barrel more smoothly, the working efficiency and stability of the hydraulic cylinder are improved, and the piston centering mechanism can absorb and buffer influences caused by external impact and load changes and protect the hydraulic cylinder.

The utility model relates to the technical field of hot press equipment, in particular to hot pressboard adjusting equipment for a hot press. According to the technical scheme, the hot-pressing device comprises a rack, universal wheels, a hot-pressing platform, telescopic limiting rods, a buffering mechanism and an adjusting mechanism, the universal wheels are arranged at the four corners of the lower portion of the rack, the hot-pressing platform is arranged on the rack, a fixing frame is arranged on the portion, on one side of the rack, of the hot-pressing platform, and the adjusting mechanism is arranged on the portion, on the fixing frame, in the rack. A hot pressing plate is connected to the adjusting mechanism in a sliding mode, and buffering mechanisms matched with the hot pressing plate are arranged on the upper side and the lower side of the rack; according to the device, the motor can be controlled to drive the two-way screw rod to rotate on the bearing seat and the fixed seat, the two-way screw rod is in threaded fit with the sliding block, so that the sliding block is driven to vertically move along the guide rods, and the guide blocks slide between the guide rods, so that stable movement of the hot pressing plate can be limited; the height of the hot pressing plate can be accurately adjusted, and it is ensured that the moving direction of the hot pressing plate is accurate.

The present invention discloses a system testing method, device, equipment and product for adaptively adjusting load, comprising establishing a data set consisting of historical load characteristic data and historical performance characteristic data; using the data set to perform model training to obtain a prediction model; using the prediction model to predict predicted performance characteristic data corresponding to the instantaneous load characteristic data; and adjusting the test data input to the system according to a preset adaptive adjustment strategy based on the predicted performance characteristic data. The present invention discloses a system testing method, device, equipment and product for adaptively adjusting load, which can adaptively adjust the load to test the system, fully simulate the load scenario of actual business, improve the test effect on the system, and protect the stability of the system during the test.

The present invention relates to the technical field of electronic connectors, and specifically to an electronic connector for an optical fiber communication product, comprising an electronic connector a and an electronic connector b connected to the electronic connector a, wherein the electronic connector b is provided with a connecting mechanism for assisting the precise connection with the electronic connector a during the connection process, and the connecting mechanism comprises a positioning plate a and a positioning plate b respectively connected to the electronic connector a and the electronic connector b. The purpose of the present invention is to provide an electronic connector for an optical fiber communication product, wherein the positioning plate a slides directionally on a guide plate, and the positioning rod slides inside a positioning tube to play a limiting role. With the cooperation of the two methods, the electronic connector a can be connected to the electronic connector b more accurately, thereby avoiding human misjudgment and deviation in the direction of force, which causes the connection ports of the electronic connector a and the electronic connector b to be unable to be precisely connected, thereby resulting in poor connection stability and poor versatility.