44results about How to "Reduce potential safety hazards" patented technology

The invention provides a double-oxide co-coated high-nickel lithium battery positive electrode material and a preparation method thereof. A high-nickel ternary precursor material is prepared through aco-precipitation method; and then, vacuum pre-sintering is carried out after fully mixing and ball-milling with lithium hydroxide and calcium hydroxide; later, sulfate, metal oxide titanium oxide, cerium oxide and the like are added into gel synthesized in an organic solvent; and the high-nickel lithium battery positive electrode material coated by a double-oxide layer is obtained after sintering. According to the method in the invention, the problem that the alkali content of the traditional high-nickel ternary material is excessively high in the precursor preparation process is solved; theprepared double-oxide-layer coated high-nickel lithium battery positive electrode material forms a physical isolation layer, so that the corrosion of HF in the electrolyte and the generation of side reactions are inhibited, the high-nickel lithium battery positive electrode material is protected; therefore, the cycling performance of the battery is improved; meanwhile, the introduced sulfate ionsform a stable electrolyte layer, so that the decomposition of the electrolyte is inhibited, and the cycling performance of the battery is further improved.

The invention discloses a fault detection method for an electric cooker, and belongs to the technical field of kitchen appliances, for solving the technical problem that in the prior art, whether a drive part for driving a caliper assembly to move breaks down or not can not be detected. For the fault detection method for the electric cooker provided by the invention, the electric cooker comprisesa cooker body, a cooker cover and a master controller, wherein an inner pot is accommodated in the cooker body, the cooker cover comprises an inner cover, a caliper assembly and a drive part, the master controller controls the drive part to drive the caliper assembly to perform radial reciprocating motion, so that the locking or unlocking of the inner cover and the inner pot is completed, the cooker cover further comprises a detection switch used for detecting that whether the caliper assembly realizes the in-place locking or not, and the detection switch is connected with the master controller. For the fault detection method for the electric cooker, after the electric cooker is powered on, the master controller judges that whether the caliper assembly realizes the in-place locking or notaccording to a detection signal sent by the detection switch, and if judging that the caliper assembly dose not realize in-place locking, the master controller controls the electric cooker to stop operation.

The invention relates to the technical field of earthquake proofing, and discloses a water damping shock absorption device used for a building. The water damping shock absorption device comprises two water boxes, two weight baskets and two cables, wherein the two water boxes are arranged on two sides of the lower side of an external wall of the building; one end of each cable is fixed on one side of the top of the external wall of the building, the other ends of the cables are used for fixedly hanging the weight baskets, and the two cables are arranged in a crossed mode; the two weight baskets are movably arranged in the water boxes respectively; balancing weights are arranged in the weight baskets. According to the water damping shock absorption device, water is adopted as damping substances and is low in price and easy to obtain, and cost is reduced; the water is placed at the bottom of the building, the structure is simple, installation convenience is achieved, and the water damping shock absorption device can be used for a long time without frequent maintaining; after an earthquake, a shock absorber is not prone to damage and can be repeatedly used; the water damping shock absorption device not only is suitable for new buildings, but also can be added to old buildings.

The invention discloses a feeding device for a tire wire winding machine and aims to solve problems of poor steel wire friction quality, proneness to accumulation and instability of steel wire tensionin the prior art. Two ends of a spool are supported on a let-off supporting frame through a let-off rotating shaft and a clamping part, and one end of the spool is in detachable connection with one end of the let-off rotating shaft. A let-off frequency-variable motor is mounted on one side of the let-off supporting frame, and an output shaft of the let-off frequency-variable motor is in transmission connection with the other end of the let-off rotating shaft through a let-off speed-reduction diverter. A let-off fixed wheel set is rotationally supported on the let-off supporting frame througha fixing support arm, and a let-off moving wheel set is rotationally supported at an output end of the let-off supporting frame through a moving support arm. An angular displacement sensor between thelet-off supporting frame and a rotating connector is in electrical connection with a controller, and the controller is in electrical connection with the let-off frequency-variable motor through a frequency converter. The feeding device has advantages that friction of steel wires is avoided, high quality and tension stability of steel wires are realized, butt joints are less prone to breakage, stability in operating and braking of the spool is achieved, and less proneness to accumulation is realized.

The invention provides an atomic layer deposition process control method for corrosive and hazardous gaseous precursors. Precise control and safe ordered injection of the gaseous precursors are realized. A gaseous precursor capacity adjustable device is additionally arranged between two precursor injection pneumatic valves, the injection amount of the precursors is accurately controlled, and a precursor injection pneumatic valve, a vacuum pump air exhaust pneumatic valve and a carrier gas purging pneumatic valve are opened and closed in order through valves, so that atomic layer deposition processes such as alternate and ordered injection and quasi-static diffusion adsorption reaction and removal of excessive precursors and reaction products are realized respectively. The atomic layer deposition process control method can realize the accurate control of the amount of the corrosion and dangerous gaseous precursors in the atomic layer deposition process, reduce the use potential safety hazard of the precursors, and reduce the environmental pressure and the use cost.

The invention relates to an engine control method and system and a vehicle comprising the engine control system. The engine control method is applied to the vehicle with the automatic starting and stopping function. The engine control method comprises the steps that it is detected that a brake pedal of the vehicle is in the pedaled state, and the current related running parameters of the vehicle are obtained; whether the related running parameters at least meet one emergency braking criterion in a preset emergency braking criterion set is judged; and if the related running parameters at least meet one emergency braking criterion in the preset emergency braking criterion set and the current vehicle speed of the vehicle is smaller than the preset vehicle speed threshold value, stopping of a vehicle engine is restrained. Potential safety hazards caused by untimely vehicle moving due to automatic stopping after the vehicle with the automatic starting and stopping function is emergently braked can be reduced or avoided.

The invention provides a communication device and a method and a device for shielding the communication of the communication device. The method for shielding the communication of the communication device comprises the steps of detecting the distance between the communication device and an object needing to be shield from the communication function of the communication device, comparing the distance between the communication device and the object with a preset distance threshold, and when the distance between the communication device and the object is smaller than the preset distance threshold, shielding the incoming call or outgoing call request of the communication device. The method and the device for shielding the communication of the communication device are capable of reducing the potential safety hazards generated when the communication device is in a communication state.

The invention discloses a contactor driven by capacitive stored energy. The contactor comprises at least one joint contact, a joint electromagnet, an electromagnet drive circuit and an open circuit energy storage capacitor. The open circuit energy storage capacitor is connected to the contactor, so that the contactor can still drive the open circuit electromagnet to enable the joint contacts to reset in an opened state under the condition of no power supply, action is rapid and reliable, using potential safety hazard of the contactor is effectively reduced, and the contactor and the relevant circuits are protected; in addition, through design of a starting button and a break button, the contactor can be switched on and off in an automatic, semi-automatic and manual mode, various flexible control modes are achieved and enriched, and the contactor is safer and more reliable. The contactor can be widely applied to the field of various contactors.

The invention provides a method for predicting the fatigue life of a steel rail. According to the method, a steel rail testing area is selected, a damage mechanics method is taken as a basis, damage evolution equation parameters of damage mechanics are determined according to an S-N curve of material fatigue, a theoretical life assessment method of damage mechanics is subjected to secondary development on a commercial finite element software platform, a function module for fatigue life assessment of the steel rail is formed, and theoretical assessment of the fatigue life of the steel rail is obtained through calculation by the aid of a finite element model. With the implementation of the method and the system, the fatigue life of the steel rail can be theoretically predicted, higher accuracy is realized, and the purpose of reducing potential safety hazards during use of the steel rail can be achieved.

The invention discloses an ammunition identification method based on a touch handle and augmented reality glasses, and the method carries out the ammunition identification through data interaction. The data interaction system comprises the following sub-databases: a two-dimensional code dictionary sub-database, a two-dimensional code encryption sub-database, an ammunition basic information sub-database, an ammunition three-dimensional vector sub-database, an ammunition warehouse digital management sub-database, an ammunition quality digital management sub-database and an ammunition destruction automatic warning prompt sub-database. According to the invention, rapid and accurate identification of basic ammunition information, three-dimensional display of ammunition structures, visual demonstration of ammunition operation and use processes and requirements and the like can be achieved, ammunition guarantee and users can rapidly master ammunition knowledge and visually perceive ammunition structure compositions and operation and use processes, potential safety hazards in the ammunition use process are reduced, and a foundation is laid for realizing ammunition precision, digital management, three-dimensional and visualized knowledge popularization.

The invention discloses a compound type desensitizing agent for a pyrotechnic composition of fireworks. The compound type desensitizing agent is prepared from magnesium oxide, calcium stearate, bismuth trioxide, bis(cyclopentadienyl) iron and phthalic anhydride. Sulfur and barium nitrate in a traditional pyrotechnic composition of the fireworks are not used and combustion pollution is reduced; potential safety hazards are reduced; the friction impact degree of the pyrotechnic composition is greatly reduced; a combustion speed of the pyrotechnic composition is slow; after being ignited, the pyrotechnic composition is only combusted gradually in a tightly sealed environment, and a condition that violent explosion is generated instantly to form strong impact waves is avoided. Accidents in a firework production process are effectively avoided; bright beads are not combusted and exploded by high temperature in a roasting technological process; a barrel blowout problem can be solved on the pyrotechnic composition and the launching intensity is improved; the pyrotechnic composition has good explosion intensity and a strong acting capability; the combustion and explosion effects can meet technical requirements of explosives, the bright beads or propellant powder and the like.

The invention provides a preparation method of a low-alkali air-blocking high-nickel ternary lithium battery electrode material. Soluble Li, Ni, Co and Mn compounds are mixed based on a high-nickel ternary proportion and uniformly dispersed in a chitosan glue solution; next, the product is subjected to high-pressure spraying and drying by a spray dryer, and the product is put into a combined liquid of aniline monomer and ammonium persulfate at the moment of a laser burn-in process by a nozzle, and constant-temperature processing is performed under N<2> protection to obtain the low-alkali air-blocking high-nickel ternary electrode material. By virtue of the method provided by the invention, the defects of increasing of irreversible capacity and extremely caused battery expansion caused by lithium carbonate easily generated by alkali residue in the preparation and use process of the existing high-nickel ternary material are overcome; the high-nickel ternary electrode material is preparedin an alkali-free condition; and by wrapping polyaniline, the high-nickel ternary electrode material has high air blocking function, thereby preventing surface separating out of lithium carbonate, lowering potential safety hazards of the battery in use, and further lowering process difficulty in manufacturing of the high-nickel ternary lithium battery.

The invention discloses a power cabinet with monitoring, warning and pre-warning functions. The power cabinet comprises a power cabinet body, a circulating water pump, a fixed pulley, a controller anda warning lamp, the upper and lower sides of the power cabinet body are provided with a water delivery tank and a condensation tank, and the circulating water pump is fixed at the rear side of the power cabinet body through bolts; and the circulating water pump is connected with the water delivery tank and the condensation tank through hoses, a mounting rod is welded to the inner side of the condensation tank, and a mounting base is fixedly mounted on the outer side of the mounting rod. According to the power cabinet with the monitoring, warning and pre-alarming functions, a high-temperaturemonitoring and warning mechanism composed of a mercurial thermometer shell, a piston, a connecting rod, a second spring, a pressure sensor, a controller and a warning lamp is used for enabling the circulating water pump and a blowing fan to work, and a circulating water path composed of the hose, a water delivery tank, a heat dissipation channel and the condensation tank is used in cooperation; and a cold water flow is controlled to be circulated and shunted into the heat dissipation channel to cool the heat in the power cabinet body.

The invention discloses an ammunition recognition system based on a visual perception technology. The system comprises an AR glasses system and a database system. The AR glasses system comprises an image recognition unit which is used for recognizing a two-dimensional code and an ammunition identification of ammunition, a virtual scene generation unit which is used for matching the information recognized by the image recognition unit with ammunition information data stored in a database system, processing interaction data and tracking data generated by the interaction unit, generating a virtual picture matched with the real environment data and transmitting the virtual picture to a head display unit; the head display unit which is used for displaying basic information, pictures, videos and three-dimensional models of ammunition; and a low-power-consumption management unit for controlling the system to enter a sleep countdown state and enter an ultra-low-power-consumption state when time is up during non-operation. According to the invention, rapid and accurate identification of ammunition basic information, three-dimensional display of an ammunition structure, and intuitive demonstration of ammunition operation use flow and requirements can be realized.

A Masonry Line Stabilizing Apparatus for use with CMU's and Bricks incorporates an elongate piece of metal with biasing faces, which secure a string line longitudinally through a string stabilizing lip.

The invention provides a fuse pressing device comprising a fuse box, a die row cavity, a sliding track, a fuse disconnection indication device, and a pressure number display device. The fuse box includes a fuse element arranged between a line side guiding part and a load side guiding part. The die row cavity consists of a housing, a mechanical fixed rod and a double-control switch button. The sliding track is arranged at the bottom of the housing and the die row cavity can slide on the sliding track. The display device is connected with a fuse socket and the fuse element and is used for displaying a pressure value between the fuse socket and the fuse element. The die row cavity also includes an alarm terminal output end. When the fuse disconnection indication device is inserted into the fuse socket, the alarm terminal output end is connected with the pressure number display device and the fuse disconnection indication device. According to the device provided by the invention, with thedouble-control switch, the potential safety hazard is reduced.

The invention discloses a thermal runaway tool for a lithium battery and a test method, and relates to the field of lithium batteries. The thermal runaway tool comprises a heating aluminum plate, andadjusting screws are arranged at four corners of the heating aluminum plate; a heating pipe hole is formed in the outer side of the heating aluminum plate, a temperature sensor is arranged on the outer side of the heating aluminum plate and located on one side of the heating pipe hole, a control cabinet is connected with one side of the heating aluminum plate, a temperature display is arranged inthe control cabinet, and a power supply control switch is arranged on one side of the temperature display and located in the control cabinet. According to the invention, the heating aluminum plate, the adjusting screws, the battery anode and cathode, the heating pipe hole, the temperature sensor, the control cabinet, the temperature display and the power supply control switch are arranged; a tested battery can be clamped more conveniently, the clamping and fixing height can be adjusted, various batteries with different thicknesses can be tested flexibly, and the device is simple in structure,low in manufacturing cost and easy to circulate in the market.

The invention discloses an anti-blocking device for a discharging chute. The anti-blocking device is arranged inside the discharging chute and is an infrared inductive switch. A mounting hole is formed in the side wall of the discharging chute, the infrared inductive switch penetrates through the mounting hole, and an inductive head of the infrared inductive switch faces a discharging port of the discharging chute. The distance between the inductive head of the infrared inductive switch and the discharging port is smaller than the sensing distance of the infrared inductive switch. By arranging the infrared inductive switch, the stability is improved.

The invention discloses a natural-gas pipe welding machine. The natural-gas pipe welding machine is structurally comprises a pipe locking structure, a welding head handle, a welding controller, a welding button, a welding-ring fixing rod, a welding ring, a motor, a fixing disc, a transmission, a rotating base, supporting rods, a transverse rod, a welding clamping base, fixing rings, connecting rods and clamping supporting rods, wherein the lower ends of the clamping supporting rods are connected with the left ends and the right ends of the connecting rods in an embedded mode, the right ends ofthe fixing rings and the clamping supporting rods are integrally formed, the left ends of the connecting rods penetrate through the inner walls of the fixing rings, the connecting rods are perpendicular to the left ends of the clamping supporting rods, and the lower ends of the supporting rods and the left end and the right end of the transverse rod are welded. According to the natural-gas pipe welding machine, the pipe clamping structure is structurally arranged, an upper clamping block and a lower clamping block tightly clamp the pipe, waggling can be avoided, welding is stably carried outaccordingly, the welding effect is improved, the service life of the pipe is thus prolonged, and the use hidden danger is reduced.

The invention discloses an augmented reality ammunition identification method, and a hardware system comprises an AR glasses main body, a handle which is connected with the AR glasses main body for use, and a database system. The database system comprises a two-dimensional code data generation module, a two-dimensional code data encryption module, a two-dimensional code data mapping module, a picture data module, a video data module, a model data module and a storage data module; the whole database system is provided with a module-oriented expansibility framework, and each data module is provided with an open data addition and deletion permission framework; the database system is in open type readable data series connection with the two-dimensional code scanning port and the AR display port upwards and downwards respectively. According to the invention, rapid and accurate identification of basic ammunition information, three-dimensional display of an ammunition structure, intuitive demonstration of ammunition operation and use processes and requirements and the like can be achieved, so that ammunition guarantee and users can rapidly master ammunition knowledge.

The invention discloses a nursing bed which comprises a bed body and two walking mechanisms, the bed body is provided with a headboard and a footboard, the bed body is provided with a plurality of supporting plate bodies driven by power elements, and the two sides of each supporting plate body are each provided with a bed body size expanding device; the headboard is provided with a double-fulcrum suspension arm extending to the upper part of the supporting plate body; an anti-collision mechanism is arranged on the walking mechanism at the same end with the headboard, and a jacking device is arranged on the other walking mechanism; and connecting rod type lifting driving mechanisms are arranged between the bed body and the two walking mechanisms. The size of the bed body is adjusted through the bed body size expansion device, and the requirements of patients with different body types are met; the structural strength and the use stability are ensured through the double-fulcrum suspension arm; due to the fact that the double-supporting-point suspension arm is arranged on the bed head board, the anti-collision mechanism is used for achieving anti-collision and safety protection in the moving process of the nursing bed. And the bed tail end is jacked through the jacking device, so that the nursing bed is fixed at the bed tail end after being moved, and the use convenience is high.

The invention discloses a natural-gas pipe welding machine. The natural-gas pipe welding machine is structurally comprises a pipe locking structure, a welding head handle, a welding controller, a welding button, a welding-ring fixing rod, a welding ring, a motor, a fixing disc, a transmission, a rotating base, supporting rods, a transverse rod, a welding clamping base, fixing rings, connecting rods and clamping supporting rods, wherein the lower ends of the clamping supporting rods are connected with the left ends and the right ends of the connecting rods in an embedded mode, the right ends ofthe fixing rings and the clamping supporting rods are integrally formed, the left ends of the connecting rods penetrate through the inner walls of the fixing rings, the connecting rods are perpendicular to the left ends of the clamping supporting rods, and the lower ends of the supporting rods and the left end and the right end of the transverse rod are welded. According to the natural-gas pipe welding machine, the pipe clamping structure is structurally arranged, an upper clamping block and a lower clamping block tightly clamp the pipe, waggling can be avoided, welding is stably carried outaccordingly, the welding effect is improved, the service life of the pipe is thus prolonged, and the use hidden danger is reduced.

The invention discloses a water-blocking fireproof special cable including a plurality of wire cores, each wire core comprises a copper core, a first insulating layer and a second insulating layer, wherein the first insulating layer and the second insulating layer coat the copper core in order, the copper core is formed by twisting a plurality of copper conductors with corrugated sections, a ceramic wrapping tape, a first protective layer, a second protective layer, a steel tape armoring layer and a sheath are sequentially arranged outside the twisted wire cores, and water blocking ropes are loaded between the wire cores and the ceramic wrapping tape. The cable is simple in structure and reasonable in design, the double insulating layers and the double protective layers are arranged, so that the cable achieves good water-blocking and fireproof effects, meanwhile, under the condition of high stability, the high conductivity of the cable is guaranteed, and potential safety hazards in theuse of the cable are reduced.

The invention discloses a welding device with a clamping structure of a connecting head, which comprises a welding device and a structure of a connecting head fixed on the welding device. The structure of the connecting head includes a connecting seat, and a connecting The electric plug-in column is provided with a dovetail-shaped slider in the vertical chute, a locking plate is fixed on the outer wall of the slider, and a locking protrusion is integrally formed on the top of the inner side of the locking plate. A return spring is fixed between the top surface and the top wall of the vertical chute, and an electric plug seat is also provided. There is an electric connection cavity in the electric connection socket, and a circular magnetic ring is arranged in the electric connection cavity. There is a conductive jack in the conductive plate, a magnet ring block is arranged in the electric connection seat, and a post holder is fixed in the center of the magnet ring block. The structure of the present invention is reasonably set up, and it is not easy for the electric head to fall off. At the same time, it is equipped with a magnet ring block and a circular magnetic ring, which can ensure the stability and applicability of the connection between the electric plug post and the conductive jack on the conductive plate. Strong and practical.

The invention relates to a vibration absorber and a manufacturing method thereof, belongs to the technical field of rail transit, and particularly relates to a rubber spring damper and a manufacturingmethod thereof. The rubber spring damper comprises a rubber spring body, wherein the rubber spring body comprises an upper surface layer, a lower surface layer and inward concave waist curved surfaces which are arranged between the two surface layers, wherein reinforcing frameworks are arranged in the two surface layers. The rubber spring damper and the manufacturing method thereof can effectively solve the problem that parts of reinforcing framework material are exposed to the outside, and the influence of stress concentration points on the surfaces of the rubber spring damper is also solved, so that the service life of the rubber spring is prolonged and the potential safety hazard in use and the difficulty of frequent replacement are reduced.

The invention belongs to the field of pharmaceutical preparation, and particularly relates to stable fasudil hydrochloride injection and a preparation method thereof. The fasudil hydrochloride injection comprises fasudil hydrochloride, stabilizers, anhydrous citric acid, sodium citrate dihydrate, sodium chloride and water for injection, wherein the stabilizers comprise N-carboxymethyl chitosan and reduced glutathione according to the mass ratio of 1:(0.05-0.35). The preparation method includes the steps: dissolving components in the formula by the water for injection after pyrogen removal; adjusting pH (potential of hydrogen); adding medicinal carbon for stirring adsorption to further remove pyrogen and perform discoloration; performing filtration and decarburization; performing filtration, sterilization, sub-package, potting and sterilization to obtain the fasudil hydrochloride injection. The fasudil hydrochloride injection has fine light stability and simple in formula, insoluble particles are effectively suppressed, the preparation process is easily operated, and industrialization is facilitated.

The invention discloses an elevator derailment detection protection device and an operation method thereof, and belongs to the technical field of elevator detection. The elevator derailment detection protection device comprises a supporting plate and further comprises supporting legs fixedly connected to the positions, close to the four corners, of the lower surface of the supporting plate, a shell, a motor and connecting plates. The shell is fixedly connected to the upper surface of the supporting plate; the motor is fixedly connected to the upper surface of the shell; and the connecting plates are fixedly connected to the two ends of the supporting plate. A sliding plate and a transmission tooth-missing gear are arranged, so that a weight box can move in a reciprocating manner, the weight box can rotate by 90 degrees each time through a rotating disc, a driven gear and a driving column, and then the weight box can move on each side in an elevator car; and therefore, whether the elevator car is derailed or not in the unbalanced stress state is fully determined, detection data are more accurate, the potential safety hazard of use of the elevator car is reduced, the weight of the weight box is flexibly allocated, and the device is convenient to move.

The invention discloses a contactor driven by capacitive stored energy. The contactor comprises at least one joint contact, a joint electromagnet, an electromagnet drive circuit and an open circuit energy storage capacitor. The open circuit energy storage capacitor is connected to the contactor, so that the contactor can still drive the open circuit electromagnet to enable the joint contacts to reset in an opened state under the condition of no power supply, action is rapid and reliable, using potential safety hazard of the contactor is effectively reduced, and the contactor and the relevant circuits are protected; in addition, through design of a starting button and a break button, the contactor can be switched on and off in an automatic, semi-automatic and manual mode, various flexible control modes are achieved and enriched, and the contactor is safer and more reliable. The contactor can be widely applied to the field of various contactors.

The invention provides a fuse pressing device comprising a fuse box, a die row cavity, a sliding track, a fuse disconnection indication device, and a pressure number display device. The fuse box includes a fuse element arranged between a line side guiding part and a load side guiding part. The die row cavity consists of a housing, a mechanical fixed rod and a double-control switch button. The sliding track is arranged at the bottom of the housing and the die row cavity can slide on the sliding track. The display device is connected with a fuse socket and the fuse element and is used for displaying a pressure value between the fuse socket and the fuse element. The die row cavity also includes an alarm terminal output end. When the fuse disconnection indication device is inserted into the fuse socket, the alarm terminal output end is connected with the pressure number display device and the fuse disconnection indication device. According to the device provided by the invention, with thedouble-control switch, the potential safety hazard is reduced.