50results about How to "Meet the requirements for safe use" patented technology

The invention provides a repairing skin-protecting nourishing mask impregnation liquid and a preparation method thereof. The mask impregnation liquid comprises the following raw materials by mass percent: 0.1-25% of herba centellae extracting solution, 0.1-20% of ginsenoside extracting solution, 0.1-20% of sophora flavescens extracting solution, 0.1-30% of aloe extracting solution, 0.1-10% of motherwort extracting solution, 0.1-15% of chamomile extracting solution, 20-70% of water, and the balance of an auxiliary agent, wherein the auxiliary agent comprises the following components by weight percent in the total weight of the mask impregnation liquid: 0.01-4% of a plant antibacterial agent, 0.01-5% of a surfactant, 3-30% of a moisturizer, 0.01-3% of a preservative and 0.01-3% of essence. The mask impregnation liquid has good effects of repairing, skin-protection, bacteria inhibition and inflammation diminishing; moreover, the pure plant antibacterial agent is used for replacing a chemical synthetic antibacterial agent, so that the product is safer and free of side effects, and has good repairing and skin-moistening effects.

The invention provides a design and preparation method for a customized fixing support used after repair of finger flexor tendon injuries. The method comprises the steps that a three-dimensional model of skin on the affected side of an arm and a three-dimensional model of skin on the uninjured side of a hand are reconstructed by utilizing CT scanning data, the three-dimensional model of the skin on the uninjured side of the hand is mirrored by taking a sagittal plane as a symmetry plane, and the three-dimensional model of the skin obtained through mirroring is used for replacing a corresponding part of the affected side and is combined with a forearm of the affected side to form a new three-dimensional model of the arm; the customized fixing support is designed by using the combined three-dimensional model as a basis, a finger part of the support adopts a rotary adjusting design, and therefore regular adjustment and coordination with early-stage functional exercise can be realized; and finite element analysis and mechanical experiments on the support are carried out, and the support is manufactured through 3D printing. According to the design and preparation method for the customized fixing support used after repair of the finger flexor tendon injuries, the designed and prepared customized support is accurate in shape, convenient to wear and good in fitting effect, and the method is superior to a traditional support manufacturing technology in terms of the precision, the machining efficiency, the material utilization rate and the like.

The invention relates to a deviation rectification method for local settlement of a pile foundation building. The method comprises the following step: according to the settlement inclination conditionof the building, a jack bearing platform is additionally arranged on a pile with large settlement capacity to serve as a loading platform, a building serves as a counter-force point, a jack is adopted for gradually loading in a graded mode, a pile end is made to be located on a bearing layer by pressing the pile with the self-weight of the building, the later use bearing capacity is met, meanwhile, the jack bearing platform serves as the counter-force point, the building settled due to collapsing is lifted, and the purpose of deviation rectification is achieved. The application of the invention enables the settlement volume and the inclination correction rate to be effectively and safely controlled, the bearing capacity of the pile meets the requirement of safe use after back pressure isfinished, the problems that the settlement amount and the inclination correcting speed are not easy to control, and secondary uneven settlement or re-inclination is easily caused are well solved, andmeanwhile, the problem that secondary damage is caused to an upper structure in the jacking process is also solved. The construction process is simple and convenient, particularly conforms to the force transmission principle, is safe and reliable, and is worthy of wide-range popularization and application.

The invention relates to a laser cladding repair method for a lip crack of a piston rod of an aircraft 300M steel landing gear. The method comprises the following steps of 1, determining laser repairprocess parameters by simulating stretching, impact and fatigue performance experiments of the piston rod, and meanwhile determining that the groove type of laser cladding repair is V-shaped; 2, selecting a simulation part before repairing, carrying out a simulation part fatigue experiment, evaluating an experiment result, and determining a final laser cladding repair process; 3, carrying out laser repair on the crack of the piston rod; 4, detecting a repair area of the piston rod to find no crack and non-fusion defect after the repair is completed; and 5, processing the repair area, recovering the size, and meeting the drawing or assembly requirements. According to the laser cladding repair method, the fatigue experiment is carried out on the simulation part of the piston rod to determinethe final repair process, it is guaranteed that the piston rod do not crack in the long period of use, so that the safety use requirements of an aircraft in the service life period can be ensured.

The invention discloses a decitabine lyophilized preparation in a specific crystal form, which has the characteristics of good stability, high purity and good water solubility. The decitabine lyophilized preparation is prepared by mixing and lyophilizing the following components in weight ratio: 50g of decitabine, 68g of potassium dihydrogen phosphate, 11.6g of sodium hydroxide, 1000-8000ml of organic solvent and 10,000ml of water for injection.

The invention relates to the technical field of hot melt adhesives, in particular to a spraying-free adhesive for a plastic sucking PVC decorative film and a preparation method thereof, a plastic sucking plate and a preparation method thereof. The spraying-free adhesive comprises a layer A, a layer B and a layer C, the A layer is arranged on the layer B, and the B layer is arranged on the layer C;wherein the layer A comprises the following components by mass percentage: 5%-50% of polyester, 3%-30% of copolyester, 10%-60% of thermoplastic polyurethane and 1%-30% of chloroprene rubber; the layer B comprises: 10%-60% of an ethylene-acrylate-maleic anhydride terpolymer and 40%-90% of an ethylene-acrylate copolymer; and the layer C comprises: 10%-40% of an ethylene-vinyl acetate grafted maleicanhydride copolymer, 30%-80% of an ethylene-vinyl acetate copolymer and 5%-30% of tackifying resin. The plastic sucking plate prepared from the spraying-free adhesive provided by the invention has temperature resistance up to 75DEG C or above and peel strength up to 40N/cm or above, and can meet the requirement for safe use.

The invention discloses a floating type wind turbine platform with high self-stability. A wind turbine, a buoyancy compartment, a ballast compartment and a mooring system are included. A transition section is connected between the buoyancy compartment and the wind turbine. The transition section is a cylinder, the wind turbine is fixed to the top of the transition section, and the bottom of the transition section is fixed to the top of the buoyancy compartment. The buoyancy compartment is a hollow circular platform with the top diameter larger than the bottom diameter, and the ballast compartment is a solid disc. Through the shape of the buoyancy compartment, the buoyant center of the floating type wind turbine platform is elevated, the ballast compartment is arranged below the buoyancy compartment, the gravity center of the platform is lowered, and accordingly the weight of the ballast compartment is reduced. Meanwhile, due to the disc-shaped ballast compartment, heaving response andpitching response of the platform are reduced; and through the transition section, connection with any type of floating type wind turbine can be achieved. According to the floating type wind turbine platform, the self-stability of the platform is improved, the floating type wind turbine platform can have excellent response performance under the severe sea condition, excellent economic efficiency is achieved as well, and the floating type wind turbine platform is applicable at any water depth.

The invention discloses a telescopic rearview mirror which comprises a rearview mirror body, a supporting pipe, a fixed pipe and an installation screw, wherein one end of the fixed pipe is connected with one end of the installation screw, a large telescopic pipe is arranged in the fixed pipe, a small telescopic pipe is arranged in the large telescopic pipe, one end of the supporting pipe stretches into the small telescopic pipe, an adjusting ball is arranged at the other end of the supporting pipe, a spherical groove is formed in the back side of the rearview mirror body, the spherical groove is in matching connection with the adjusting ball, the cylindrical surface of the end, connected with the fixed pipe, of the installation screw is manufactured into four square clamping surfaces, and a clamping nut is arranged on the installation screw and is in threaded connection with the installation screw. The telescopic rearview mirror is simple in structure and convenient to use and can effectively solve the technical problem that the installation height of existing rearview mirrors is not adjustable and therefore safe use of electric bicycles is affected.

The invention discloses a system and method for double cylindrical piers construction through an electric bridge type scaffold platform. The system is composed of an electric bridge type scaffold platform, cylindrical piers and cylindrical pier connecting parts. The electric bridge type scaffold platform is composed of a foundation, a driving device, a platform assembly, scale section stand columns and a control unit. Each cylindrical pier connecting part is composed of an attachment frame installed on one standard section stand column, a hoop installed on the cylindrical pier and an attachment rod with the two ends installed on the attachment frame and the hoop respectively to play a connecting role. After the hoops are installed on the cylindrical piers and the attachment rods are tied,the electric bridge type scaffold platform can carry people to ascend or descend along the standard section stand columns. The electric bridge type scaffold platform is in horizontal butt joint with acreeping formwork lower lifting platform; and the cylindrical piers are double-cylindrical piers. When the double-cylinder piers are constructed, people are carried to ascend or descend through the electric bridge type scaffold platform; when the tie beam and the bent cap are constructed, an operation platform and the outer surface of the cylindrical pier are decorated, so that the construction safety is guaranteed, and the labor intensity of workers is reduced.

The invention relates to the technical field of 3D printing, in particular to an environment-friendly 3D printing system. The environment-friendly 3D printing system is used for safely carrying out smashing, melting and 3D printing work on waste plastic bottles. The environment-friendly 3D printing system is characterized by comprising a feeding machine, a plastic smashing machine, a high temperature melting machine and a printing machine; the feeding machine comprises a top cover and a material bin; the top cover is provided with a plurality of first rolling shafts in a rotating mode, and the first rolling shafts are driven by a motor; the top cover is installed on the material bin in a rotating mode, a baffle is installed on an opening in the left side of the material bin in a sliding mode and is fixedly connected to a rack, the rack is meshed with a gear, and the gear is fixedly installed on the top cover; a feed port of the plastic smashing machine is fixedly formed in the left side of the material bin, the plastic smashing machine is connected to the high temperature melting machine, the high temperature melting machine is connected to a storage box, and the storage box feeds the printing machine. The environment-friendly 3D printing system has the beneficial effects that the safety of operating personnel can be effectively guaranteed in the smashing, melting and 3D printing process of the waste plastic bottles.

The invention relates to the field of lubricating oil, in particular to water-based environment-friendly rust-proof aluminum foil punching and shearing fluid and a preparation method thereof.The water-based environment-friendly rust-proof aluminum foil punching and shearing fluid is prepared from, by mass, 0.3%-1.5% of a lubricating agent, 0.2%-1.5% of a corrosion inhibitor, 0.1%-1% of an emulsifying agent, 0.05%-0.5% of a sterilizing agent, 0.2%-1% of a rust inhibitor, 0.1%-1% of a PH regulator, 0.001%-0.01% of a defoaming agent and the balance water. The deionized water is supplemented to 100%. The punching and shearing fluid is an energy-saving and environment-friendly aluminum foil processing fluid produced in a green manner, has the advantages of good lubricity, no VOC emission, safety in use by human bodies, certain cooling performance, low cost and mold protection, and especially has excellent antirust performance on cast iron, copper and aluminum metals.

The invention relates to a high-low frequency mixed small self-disconnecting connector. A plurality of jack components are sequentially connected to the jack insulating plate, the jack insulating plate cover plate, and the jack silicone rubber sealing wire body from front to back. The insulating plate, the jack insulating plate cover plate, and the jack silicone rubber sealing body are connected in the plug shell in turn from front to back. There are more than one guide key and more than one radial key on the inner wall of the front end of the plug shell. The locking through hole, the radial locking through hole is provided with steel balls and springs in turn from the inside to the outside, the inner opening of the radial locking through hole is smaller than the diameter of the steel ball, the outer ring of the front end of the plug shell is sleeved with a plug jacket, and the inner wall of the plug jacket is against Tighten the spring and steel ball, the front outer ring of the jack insulating plate and the inner cavity wall of the plug shell are tightly connected through the shielding claws, and multiple pin assemblies are connected to the pin insulating plate and the pin insulating plate cover from front to back. In the body of the board and the pin silicone rubber seal, the outer ring of the front end of the socket shell is provided with a guide groove and a locking groove.

The invention discloses a safety hydrogen storage device of a hydrogen energy booster vehicle and a hydrogen supply system thereof. The safety hydrogen storage device comprises a hydrogen storage bottle and a valve arranged at the mouth of the hydrogen storage bottle. The hydrogen storage bottle sequentially comprises a inner container, a winding layer and an outer shell from inside to outside. The valve is a top-opening valve. The valve comprises a valve body, a top column, bulges, a spring, an air nozzle, an elastic pressurizing ring, a vent hole and a connecting groove. The valve body is ina cap shape and is suitable for being connected with a hydrogen cylinder, and a groove is arranged inside the valve body. The top column penetrates through the valve body and is suitable for moving up and down in the valve body. The upper part of the top column is provided with a circle of bulges, and the bulges are arranged in the grooves in the valve body. The spring is suitable for providing upward moving force for the top column. The air nozzle is matched with the bottom of the top column, and the top column is suitable for opening the air nozzle when moving downwards. The elastic pressurizing ring is arranged at the lower part of the air nozzle in a sleeving manner. The center of the top column is provided with the vent hole suitable for gas to pass through. The top of the valve bodyis provided with the connecting groove. According to the safety hydrogen storage device of the hydrogen energy booster vehicle and the hydrogen supply system thereof, by arranging a top-opening typevalve mechanism and a rebound and protection structure, the structure is simplified, and meanwhile, the safety is ensured; and a vertical z-shaped air nozzle is arranged, the sealing area of the air nozzle can be effectively increased, the sealing performance is improved, and the safety is further improved.

The invention discloses a mobile LPG bottle group gasification device, and solves the problems that existing LPG bottle group gasification stations are all fixedly installed, have poor mobility, and cannot meet demands of mobile gas supply. The mobile LPG bottle group gasification device comprises an LPG steel cylinder group, a circulating water bath type LPG vaporizer communicating with the LPG steel cylinder group through a main pipeline and providing gas phase gas to a user, a hot water boiler providing hot water for the circulating water bath type LPG vaporizer, an LPG gas cylinder providing combustion energy for the hot water boiler; and a gas outlet pipeline of the circulating water bath type LPG vaporizer communicates with a gas inlet pipeline of the hot water boiler. Under the premise of paying attention to safety, the mobile LPG bottle group gasification device can well achieve a purpose of mobile gas supply and ensure that the output gas volume meets an industrial productiondemand.