34results about How to "Addressing Insufficient Protection" patented technology

A bolus, for introduction into a ruminant animal's reticulum to register pressure signals transmitted through fluids therein, has a case unit adapted for immersion in the fluids. A mechanical amplifier element extends out from the case unit and is adapted to be surrounded by the fluids in the reticulum and absorb mechanical energy from the pressure signals. A guide part conveys mechanical energy from the mechanical amplifier element to a sensor module in the interior of the case unit. The sensor module transduces the pressure signals into electric signals from which a processing module extracts data representing body movements, a heart beat rate, a respiratory rate, a respiratory depth and / or stomach activity of the animal. A communication module in the case unit receives the data and transmits output radio signals reflecting the data.

Our invention describes a fire protection system for a structure, such as a building, which may be operable as desired, or found necessary, by a building tenant, to protect against the possibility of a building fire or to extinguish a fire already occurring. Our system comprises a source of water which supplies water to a holding tank positioned near the structure, an electrically operable pump component connected to the holding tank and to a multiplicity of sprinkler members positioned at convenient locations on or in the structure. Sprinklers are intended to be mounted on the most convenient positions on the roof or sides of a building. Preferably, when mounted on the roof, sprinklers are to be connected to water supply lines positioned on the interior of the structure, when possible, for better appearance, and, for buildings having limited space below the roof, sprinklers are mounted on a fake ridge support system with water lines below the ridge system. Our system is developed to be made operable at the will of t4he tenant, or actuable automatically, or from a remote signal. The ultimate in fire protection is intended. The system includes proper inspection and clean-out components where needed for parts of the system

The invention discloses a welding device. The welding device comprises a box, an air inlet, an air outlet, at least one opening, a flow-guiding part and a welding part, wherein the air inlet and the air outlet are formed in the box; the at least one opening is formed in the box, and the openings are used for placing parts to be welded or taking welded parts out; the flow-guiding part is arranged in the box, under the condition of pumping protective gas into the box through the air inlet, the flow-guiding part moves from the air inlet to the air outlet, and air in the box is discharged from theair outlet; and the welding part is arranged below the flow-guiding part. By arranging the flow-guiding part, the air in the box can be effectively discharged, so that the box is full of the sufficient protective gas, the concentration of the protective gas is ensured, and thus the risk of rework or raw material scrapping due to the fact that the protective gas welding protection is not in placeof a titanium alloy pipe-flange is avoided.

A disposable protective garment for positioning over a wearer's head is provided for use in airplanes, busses, trains, other mass transit and other single-use applications. The disposable protective garment includes a hood formed of tubular blown film that has an at least partly closed top that rests on a wearer's head and an open bottom that rests on a wearer's shoulders. A mask can be integrated into the hood by forming a plurality of apertures in the hood and placing a polymer fabric that acts as a filter over the plurality of apertures. The hood may alternatively be combined with a crown or air filter material positioned over its top; a tubular filter equipped with an electric fan that draws air from above, filters it and directs the clean air downward across the wearer's face; and / or headgear. A barrier film suitable for use in the protective garment as well as other barrier applications is also provided.

The present invention provides a permanent magnet motor rotor protection device which comprises a connecting rod, an outer ring, an outer sliding groove, a ball, an inner sliding groove, a protection ring and a stabilizer bar, the protection ring is mounted on the annular side surface of a rotor main body, the inner sliding groove is formed in the annular side surface of the protection ring, the ball is embedded in the inner sliding groove, and the outer ring is mounted on the outer side of the ball. The inner annular side face of the outer ring is provided with an outer sliding groove, the balls are embedded into the outer sliding groove, the connecting rods are installed between the motor shell and the outer ring, and the stabilizing rod is installed between the connecting rods, the problem that an original permanent magnet motor rotor lacks protection measures is solved through the design, the permanent magnet motor rotor protection device is reasonable in structure, protection is provided for the permanent magnet motor rotor, and abrasion is avoided.

According to the present invention, there is provided a cosmetic composition comprising a cosmetically acceptable carrier and a preservative system, wherein the preservative system comprises (i) an antimicrobial agent; (ii) a chelating agent comprising ethylenediamine tetraacetic acid (EDTA) or a derivative thereof; and (iii) an antimicrobial booster agent selected from the group consisting of ethylhexylglycerin, caprylyl glycol, hydroxy acetophenone, caprylhydroxamic acid, phenethyl alcohol, p -anisic acid, glyceryl caprylate, levulinic acid, sodium levulinate, propanediol, hexanediol, pentylene glycol, capryloyl glycine, methylpropanediol, phenylpropanol, sodium anisate, and combinations thereof, and the antimicrobial agent is present in an amount of from about 0.001% to about 1% by weight of the composition.

The invention relates to the technical field of electric automobiles, in particular to a module box convenient to overhaul. The module box comprises a top cover, a bottom plate, two first side plates and two second side plates; the top cover, the bottom plate, the first side plates and the second side plates can be combined into the complete module box; the top cover, the bottom plate, the first side plates and the second side plates are movably connected to form the module box; the bottom surface of the top cover is movably connected with a lithium battery module through a buckle assembly; a plurality of groups of limiting and damping assemblies are arranged at the edge, corresponding to the lithium battery module, of the top surface of the bottom plate; and the limiting and damping assemblies play a role in limiting and damping under the cooperation of the bottom plate, the first side plates and the second side plates. According to the module box of the invention, the top cover, the bottom plate, the first side plates and the second side plates are movably connected to form the module box, and the interior of the module box and the lithium battery module can be thoroughly overhauled during overhauling and dismounting, so that the overhauling efficiency is improved.

The invention provides a textile roller safety protection taking and placing device. The device comprises a base; a main frame body is fixedly welded on the upper surface of the middle part of the base; the upper part of a clamping rod is arranged in a mounting frame; a clamping ring is fixedly welded at the lower end on the left side of a first turbine; a first sealing rubber ring is fixedly mounted on the lower surface edge of a sealing plate; a second sealing rubber ring is matched on the lower surface of the first sealing rubber ring, and is fixedly mounted on the upper end edge of a storage box; the outer end of a fixed rod is inserted in the left and right end walls of the main frame body, and a thread pipe is fixedly welded at the right end; the upper and lower ends of a second thread rod are rotationally mounted in the right wall of the main frame body through a bearing, and a third turbine is fixedly welded on the outer surface of the lower part; a third motor is arranged under the external of the right end of the main frame body, and the lower end is fixedly mounted on the lower surface in a fixed frame. The device is convenient to use and high in protectiveness, meets various use conditions, and achieves high practicability.

The invention discloses a simulated projectile speed measuring system for researching a cased telescoped ammunition impact extrusion process. The simulated projectile speed measuring system comprisesa simulated projectile and an acceleration measuring module, the acceleration measurement module is fixed inside the simulated projectile, the acceleration measuring module comprises a power supply circuit, an acceleration sensor, a signal conditioning circuit, a processor and a Flash; the simulated projectile is consistent with outer shape, size, gravity center and quality of the cased telescopedammunition, and the simulated projectile has a function of protecting the acceleration measurement module; the power supply circuit is used for providing required direct current for the rest circuitsof the acceleration measurement module, the acceleration sensor is used for collecting an acceleration analog signal in the impact extrusion process of the simulated projectile, after the acceleration analog signal passes through the signal conditioning circuit, an acceleration digital signal is sent to the processor, and the data is stored in the Flash. According to system, a complete speed measuring system for researching the cased telescoped ammunition impact extrusion process, the system has the advantages of being completely equivalent, recyclable, high in reliability, high in g value measurement and the like, and the system can be used for carrying out high-precision measurement on small signals in an impact extrusion process.

The invention discloses a device and a method for generating an SM2 signature private key capable of secretly sharing and hiding an identity, belongs to the field of password engineering, and is used for solving the problems of mobile Internet private data protection and online certificate query. The method is characterized in that a client side and a server side independently generate part of factors of a client side private key, the two factors cooperatively operate and publish D1, DS and Q declaration parameters, the client side and the server side cannot calculate the complete private key of the client side according to the parameters generated and obtained by the client side, but the client side identity can be authenticated offline through the declaration parameters; and meanwhile, the server side can calculate and issue a complete public key of the client side, and effective fusion of two safety protection measures of offline authentication and online joint signature is achieved.

The invention discloses an efficient cement mixing device, and relates to the technical field of machinery. The efficient cement mixing device comprises a base. A tank is fixedly connected with the top of the base, a transmission gear is fixedly connected with the top of the tank, a support rod penetrates the bottom of the transmission gear, the bottom of the support rod penetrates the top of the tank and extends into the tank, a first motor is fixedly connected with the end, which is positioned inside the tank, of the support rod by a motor case, a stirring shaft is fixedly connected with an output shaft of the first motor by a coupling, the bottom of the stirring shaft penetrates the bottom of the motor case and extends to the bottom of the tank, a stirring blade is fixedly connected with the surface, which is positioned inside the tank, of the stirring shaft, and the transmission gear comprises a shell. The efficient cement mixing device has the advantages that the problem of poor mixing effects of the traditional cement mixing devices due to uneven mixing can be solved by the aid of the efficient cement mixing device, the work efficiency of workers can be improved, human and material resources can be saved, and requirements of users on service effects can be met.

The invention discloses a safety type hardware stamping die. The safety type hardware stamping die comprises a stamping structure, main rib rods, a connecting rod, a sleeve, pushing blocks and a base,wherein the left end and the right end of the stamping structure are provided with the main rib rods respectively, the connecting rod is arranged above the two main rib rods, the connecting rods is nested in the two main rib rods, the sleeve is installed below the connecting rod, the pushing blocks are installed at the bottom end of the sleeve, the base is arranged at the bottom end of the stamping structure, the base is arranged between the two main rib rods, springs are embedded in the outer walls of the main rib rods, the tops of the springs are fixedly connected with the connecting rod, aguide rail is arranged at the bottom end of the connecting rod, the top end of the sleeve is embedded into the guide rail, and an upper buffer block is arranged above the inner part of the sleeve. The safety type hardware stamping die is stable in structure, can effectively protect the sleeve, prolongs the service life of the device, can stably fix the dies with different sizes, and has high popularization value.

The invention provides a production device of a wiredrawn pure aluminum plate. The production device comprises a connecting rod, a rotating rod, a drying box, a first sponge plate, a connecting plate,an electric telescopic rod, a dustproof box and a second sponge plate; the drying box is assembled on the upper end face of the dustproof box, the rotating rod is assembled on the upper end face of the drying box through a rotary shaft, the lower end of the rotating rod extends into the drying box, the connecting rod is assembled at the lower end of the rotating rod, and through design, the problem that an existing production device of the pointer-type pattern wiredrawn pure aluminum plate protects the aluminum plate insufficiently is solved; the dustproof box is assembled on the right end face of a wiredrawing machine, the electric telescopic rod is assembled in the dustproof box, the upper end of the electric telescopic rod is connected with the connecting plate, the second sponge plateis assembled on the upper end face of the connecting plate, the first sponge plate is assembled in the dustproof box, the first sponge plate is arranged on the upper side of the second sponge plate,and through design, the purpose that the surface of the aluminum plate is kept to be clean before wiredrawing is achieved; and water is removed to enable the aluminum plate to keep clean, functions are complete, and safety and reliability are achieved.

The invention discloses a high-efficiency cement mixing device which comprises a base. The top of the base is fixedly connected with a tank, and transmission devices are all fixedly connected with the two sides of the tank; the bottoms of the transmission device are fixedly connected with the top of the base; a supporting column penetrates through the top part of one side of each transmission device, and one end of each supporting column penetrates through one side of the tank and extends to the other side of the tank; the supporting columns are located at the bottom in the tank and fixedly connected with a motor box, and a first motor is fixedly connected with the top of an inner cavity of the motor box; an output shaft of the first motor penetrates through the bottom of the motor box and is fixedly connected with a stirring shaft through a coupling; and a stirring blade is fixedly connected with the surface of the stirring shaft. The invention relates to the technical field of mechanical equipment. According to the high-efficiency cement mixing device, the problem that the mixing effect is not good due to uneven mixing of a traditional cement mixing device is solved, working efficiency of the mixing device is improved, manpower and material resources are saved, and the using effect for users is met.

The invention relates to an LED ejection method and a device. An LED eject method comprises that follow steps of: fixing a protective member on a target object; wherein a plurality of LED storage positions are arranged outside the protective member, and each LED storage position is fixedly connected with an LED luminous body; slowly lifting the target object from the bottom of the barrel to a position to be ejected close to the top of the barrel in the inclined barrel; at a position to be eject, the target object is ejected to the outside of the barrel at an initial velocity of 1 m / s to 5 m / s.The target object can be adequately protected by the design of the protective element, avoid danger, A LED luminous body fixedly connected with that LED storage position makes the target object dazzle during ejection, and is suitable for viewing and positioning whether daytime or night, and is free from the traditional rigid luminous mode, and can obtain the multifarious luminous effect, give consideration to the safety and mobility of the target object, and is convenient to recover the target object.

This solution discloses a welding device, comprising: a box body; an air inlet and an air outlet arranged on the box body; at least one opening arranged on the box body is used to put in the parts to be welded, or take out the welding to complete Parts; the guide part arranged inside the box, when the protective gas is passed into the inside of the box through the air inlet, the guide part moves from the air inlet to the air outlet, and the air in the box Exhausted from the air outlet; and, the welded portion provided below the deflector. This solution can effectively remove the air in the box by setting the diversion part, so that the box can be filled with sufficient protective gas, and its concentration can be guaranteed, so as to avoid the rework of the titanium alloy pipe-flange due to insufficient protection of the welding protective gas. Or the risk of scrapping raw materials.

An embodiment of the present invention provides a random response-based personalized privacy protection method and device, wherein the method is applied to the client, including: obtaining the target sensitivity value input by the user to collect target privacy data, the target privacy The data corresponds to a plurality of sensitive values, and the target sensitive value is a sensitive value among the plurality of sensitive values; using a preset personalized random response model, the target sensitive value is disturbed to obtain a disturbed sensitive value; Wherein, the model is a response model that introduces the weight of each sensitive value of the target privacy data, and the model makes: the probability of outputting the real value for the sensitive value with high weight is lower than the probability of outputting the real value for the sensitive value with low weight The probability. This solution can solve the problem of over-protection of some privacy data and insufficient protection of some privacy data in the process of privacy collection in the existing random response-based related technologies.

The invention provides a textile roller safety protection taking and placing device. The device comprises a base; a main frame body is fixedly welded on the upper surface of the middle part of the base; the upper part of a clamping rod is arranged in a mounting frame; a clamping ring is fixedly welded at the lower end on the left side of a first turbine; a first sealing rubber ring is fixedly mounted on the lower surface edge of a sealing plate; a second sealing rubber ring is matched on the lower surface of the first sealing rubber ring, and is fixedly mounted on the upper end edge of a storage box; the outer end of a fixed rod is inserted in the left and right end walls of the main frame body, and a thread pipe is fixedly welded at the right end; the upper and lower ends of a second thread rod are rotationally mounted in the right wall of the main frame body through a bearing, and a third turbine is fixedly welded on the outer surface of the lower part; a third motor is arranged under the external of the right end of the main frame body, and the lower end is fixedly mounted on the lower surface in a fixed frame. The device is convenient to use and high in protectiveness, meets various use conditions, and achieves high practicability.

The invention relates to the technical field of water flow monitoring, and discloses an input-type ultrasonic flow monitor that is convenient for field use, including a moving seat, the top of the moving seat is fixedly connected with a side mounting frame, and the side mounting frame The left side is fixedly connected with the main body of the input type ultrasonic flow monitor, the right side of the side mounting frame is fixedly connected with a bearing plate, the bottom of the moving base is fixedly connected with four wheels, and the top of the bearing plate A servo motor is fixedly connected, the output shaft of the servo motor is fixedly connected with a first threaded rod with one end penetrating and extending to the bottom of the bearing plate, and the bottom of the first threaded rod is fixedly connected with a first threaded rod whose bottom is fixedly connected with the moving seat. Bearing, the outer side of the first threaded rod is threaded with a first threaded block. The input-type ultrasonic flow monitor which is convenient for field use has achieved the purpose of being convenient for field use as a whole.

The invention relates to an LED ejection method and device; the LED ejection method comprises: fixing a guard on a target object; wherein, a plurality of LED storage positions are arranged outside the guard, and each LED storage position is fixedly connected to an LED illuminant; In the inclined cylinder, slowly lift the target object from the bottom of the cylinder to the position to be ejected near the top of the cylinder; at the position to be ejected, the target object is ejected to the outside of the cylinder at an initial velocity of 1 m / s to 5 m / s . Through the design of the protective parts, the target object can be fully protected to avoid danger. The LED illuminator fixedly connected to the LED storage position makes the target object dazzling when it is ejected. It is suitable for viewing and positioning whether it is day or night. The traditional rigid lighting method can obtain ever-changing lighting effects, taking into account the safety and mobility of the target object, and also facilitates the recovery of the target object.

The invention discloses a simulated projectile speed measuring system for researching a cased telescoped ammunition impact extrusion process. The simulated projectile speed measuring system comprisesa simulated projectile and an acceleration measuring module, the acceleration measurement module is fixed inside the simulated projectile, the acceleration measuring module comprises a power supply circuit, an acceleration sensor, a signal conditioning circuit, a processor and a Flash; the simulated projectile is consistent with outer shape, size, gravity center and quality of the cased telescopedammunition, and the simulated projectile has a function of protecting the acceleration measurement module; the power supply circuit is used for providing required direct current for the rest circuitsof the acceleration measurement module, the acceleration sensor is used for collecting an acceleration analog signal in the impact extrusion process of the simulated projectile, after the acceleration analog signal passes through the signal conditioning circuit, an acceleration digital signal is sent to the processor, and the data is stored in the Flash. According to system, a complete speed measuring system for researching the cased telescoped ammunition impact extrusion process, the system has the advantages of being completely equivalent, recyclable, high in reliability, high in g value measurement and the like, and the system can be used for carrying out high-precision measurement on small signals in an impact extrusion process.

The invention discloses an explosive welding support device and application thereof. The explosive welding support device has a base which is provided with a threaded hole which is in threaded connection with a support part, and the support part comprises a lower support part and an upper support part; the lower support part comprises a circular structure and a limiting ring disposed at an upper end of the circular structure, and the inner diameter of the limiting ring is less than that of the circular structure; the upper support part comprises a cylindrical structure and a limiting step disposed at the lower end of the cylindrical structure, the diameter of the limiting step is greater than that of the cylindrical structure, and the limiting step is disposed inside the lower support part; the outer wall of the lower support part is provided with an external thread. The explosive welding support device has the advantages that the problem that a middle part of a gap support cannot gain good protection due to the inability of the traditional support to be extra-long is avoided; the problem that the traditional support is 'easy to place but difficult to pick' is improved, and lifting efficiency is improved; the support part is a replaceable part, applicable to protecting gap supports of different heights, and the problem that an overall assembly is unavailable for use due to damage to certain parts is also avoided.

The invention discloses a civil engineering hanging basket with a lifting protection structure and a stabilizing mechanism thereof. The civil engineering hanging basket comprises a bottom plate, wherein the top surface of the left side of the bottom plate is connected with a mounting mechanism through screws; two sides of the top surface of the bottom plate are fixedly connected with supporting columns; a hydraulic mechanism is mounted at a gap between the supporting columns; the bottom surface of the hydraulic mechanism is fixedly connected with the top surface of the bottom plate; a hydraulic rod is mounted at the top of the hydraulic mechanism; the other end of the hydraulic rod is fixedly connected with a first supporting plate; pressure seats are mounted on two sides of the top surface of the first supporting plate through screws; the tops of the pressure seats are fixedly connected with lifting columns; and a main rod is mounted at a gap between the lifting columns. The civil engineering hanging basket disclosed by the invention solves the problems that a traditional lifting protection device is small in lifting power and poor in material sealing; a lifting mechanism can provide sufficient lifting power through a hydraulic device; and building materials in the hanging basket can be protected through a cover plate and the stabilizing mechanism.

The invention discloses a power transformation overhaul protection tool. The power transformation overhaul protection tool comprises a box, four rollers are in contact with the bottom of the inner side of the box, a base is installed at the upper ends of the rollers, the four rollers are evenly distributed at the lower end of the base, a clamping groove is formed in the base, and a placing frame is clamped into the clamping groove. A partition plate is fixedly connected to the bottom of the inner side of the placing frame, six shells are fixedly connected to the positions, located on the two sides of the partition plate, of the bottom of the inner side of the placing frame, the six shells are symmetrically distributed on the two sides of the partition plate, and an air extracting pump is installed on the left side of the exterior of the box. A connecting pipe is fixedly connected to right side of the air extracting pump, and the connecting pipe penetrates through the box and extends into the box. The power transformation overhaul protection tool has the beneficial effects that the tool is fixed more sufficiently, and the tool is stored in a vacuum mode.

The invention discloses a breast pump adaption base which comprises a box body and a bottom plate, wherein the middle of the top of the bottom plate is fixedly connected with the bottom of the box body, a fixed rod is fixedly connected to the middle between the top and the bottom of an inner cavity of the box body, a heating box and a refrigerating box respectively penetrate through the top and the bottom of the surface of the fixed rod, an air exhausting pipe penetrates through the top of the surface of the fixed rod, and the two sides of the air exhausting pipe are both fixedly connected with an inner wall of the box body. The invention relates to the technical field of breast pump accessories. According to the breast pump adaption base, the middle of the top of the bottom plate is fixedly connected with the bottom of the box body, breast milk can be protected according to different weathers, the breast milk can be always at the optimal storage temperature, the situation that the breast milk cannot be eaten due to weather temperature is avoided, unnecessary waste is avoided, convenience is brought to people to use the breast milk, and the problem that an existing breast pump adaption base cannot well protect the pumped breast milk is solved.

The invention relates to a method for preparing protective film playing a role in protecting glass micro-fluidic chips in etching process. The method comprises the steps of plating a glass substrate with a chromium sacrificial layer, smearing glue, baking the glue, performing UV exposure, developing, removing the chromium sacrificial layer, performing wet etching, removing the glue, removing the chromium sacrificial layer and sealing at high temperature when a glass micro-fluidic chip is conventionally manufactured. The method is characterized in that positive photoresist containing linear phenolic resin is taken as a basis; after the developing step and before the follow-up step of removing the chromium sacrificial layer, by taking a formaldehyde monomer aqueous solution or a glutaraldehyde aqueous solution with a certain concentration and pH value as a cross-linking agent, formaldehyde or glutaraldehyde and the linear phenolic resin in the positive photoresist containing the linear phenolic resin are subjected to cross-linking reaction; and the photoresist is cross-linked to be the protective film of which the body type is in a network structure so as to enable the photoresist protective film to prolong the time of tolerating the corrosion of hydrofluoric acid glass etching liquid and increase the etching depth of micro-fluidic channels. The method is applicable to the glasssubstrates plated with other metal sacrificial layers.

The invention discloses a falling protection safety device of an elevator car. The falling protection safety device comprises the elevator car and cavities formed in the side portions of all layers of an elevator shaft. The cavities are located in the upper portions of the stopping positions of the elevator car. Each cavity is internally provided with vertical rotating shafts and guiding sleeves. Each rotating shaft is provided with a rotating rod, the middle portions of the rotating rods are hinged to the rotating shafts, the two ends of each rotating rod are hinged to one end of a first universal coupling and one end of a second universal coupling correspondingly, the other end of each first universal coupling is hinged and connected to the side edge of an elevator landing door, an inserting rod is hinged to the other end of each second universal coupling, and each inserting rod is matched with the corresponding guiding sleeve. After the elevator car reaches a corresponding floor and the corresponding elevator landing door is opened, the corresponding elevator landing door is moved towards the two sides and pushes the corresponding rotating rods to rotate around the corresponding rotating shafts, the corresponding inserting rods move towards the elevator shaft and can be inserted in inserting pipes, so that suspension supporting is added for the top of the elevator car, even the falling situation happens, safety is effectively improved due to the action of the inserting rods and the inserting pipes, and sufficient protection can be provided the moment the falling accident happens.

The invention discloses a falling protection safety device of an elevator car. The falling protection safety device comprises the elevator car and cavities formed in the side portions of all layers of an elevator shaft. The cavities are located in the upper portions of the stopping positions of the elevator car. Each cavity is internally provided with vertical rotating shafts and guiding sleeves. Each rotating shaft is provided with a rotating rod, the middle portions of the rotating rods are hinged to the rotating shafts, the two ends of each rotating rod are hinged to one end of a first universal coupling and one end of a second universal coupling correspondingly, the other end of each first universal coupling is hinged and connected to the side edge of an elevator landing door, an inserting rod is hinged to the other end of each second universal coupling, and each inserting rod is matched with the corresponding guiding sleeve. After the elevator car reaches a corresponding floor and the corresponding elevator landing door is opened, the corresponding elevator landing door is moved towards the two sides and pushes the corresponding rotating rods to rotate around the corresponding rotating shafts, the corresponding inserting rods move towards the elevator shaft and can be inserted in inserting pipes, so that suspension supporting is added for the top of the elevator car, even the falling situation happens, safety is effectively improved due to the action of the inserting rods and the inserting pipes, and sufficient protection can be provided the moment the falling accident happens.

The invention relates to a universal corrosion inhibitor for multiple metal plates and a preparation method thereof. The universal corrosion inhibitor is characterized in that the universal corrosioninhibitor comprise the following material components in percentage by mass: 8-12% of 3-phenyl-2-sodium acrylate, 19-23.4% of sodium benzoate, 4-6% of ammonium benzoate, 18-22% of ammonium molybdate, 7.8-9.8% of benzotriazole, 8-10% of 1-aminobenzotriazole, 5-9% of 2-methylimidazole and 16-20% of caprylic acid which are prepared to be dissolved in 2-4 times of deionized water at six steps; the corrosion inhibitor is coated on base materials such as rust-proof base paper and cloth; the basis weight of the base material such as the rust-proof base paper or the cloth is more than 40g / m<2>; and thecoating amount of the universal corrosion inhibitor for the multiple metal plates is 8-10g / m<2>. The antirust performance of a prepared antirust packaging material can meet the standard requirementsof QB / T 1319 Volatile Rust Preventive Paper and the like, and the performances of gas phase antirust screening tests and dynamic contact damp-heat tests on various metal plates can reach more than 7 cycles.