57results about How to "Play the role of secondary protection" patented technology

The invention discloses a mechanical automatic stop device of a wire coil machine. The mechanical automatic stop device comprises a mounting plate, a length measuring unit, a pressing unit, an abnormity detecting unit and an emergency stop unit, wherein the back side surface of the mounting plate is fixedly connected with a motor; an output shaft of the motor penetrates through a through hole of the mounting plate; the front end of the output shaft of the motor is fixedly connected with a mounting shaft; the back end of the outer arc surface of the mounting shaft is fixedly connected with a brake disc; the middle part of the front side surface of the mounting plate is fixedly connected with a third fixed plate; the left side surface of the third fixed plate is fixedly connected with an electric push rod; the left end of the electric push rod is fixedly connected with a brake pad; the brake pad is of an arc structure; the inner arc surface of the brake pad is corresponding to the outerarc surface of the brake disc; and the back end of the front side surface of the mounting plate is fixedly connected with a support plate. The mechanical automatic stop device of the wire coil machineis novel in structure, needs no external equipment to measure the length of a cable, can automatically take corresponding stop measures according to different conditions, and is high in safety and convenient to operate.

The invention belongs to the technical field of smart watches, and particularly relates to a smart watch with a sealed structure. The smart watch with the sealed structure comprises a watch shell body and a rear shell buckled with the watch shell body, wherein the rear shell and the watch shell body are fastened and connected through a plurality of threaded connection pieces; an annular step is arranged on the inner side of the end portion of the shell body wall of the watch shell body; an annular waterproof sealing ring is arranged on the annular step and makes tight contact with the inner surface of the rear shell and the inner surface of the watch shell body respectively; a closed space is defined by the annular waterproof sealing ring, the rear shell and the watch shell body; as electronic components are arranged in the closed space, exterior liquid entering the closed space from the buckled position is prevented from making contact with the electronic components, and the secondary protection is achieved; the annular waterproof sealing ring does not make direct contact with the exterior environment, influence from changes of the exterior temperature is small, and the problems that as the coefficients of thermal expansion of smart watch components are different, contact intervals are large and the exterior liquid flows into the smart watch are solved.

The invention discloses regenerated cellulose fibers containing ceramide micro-capsules and a preparation method of the regenerated cellulose fibers. Raw materials of the regenerated cellulose fiberscomprise viscose spinning fluid and the ceramide micro-capsules, and capsule cores of the ceramide micro-capsules comprise ceramide and glycerinum. The preparation method comprises the steps of mixingceramide micro-capsule dispersion fluid with the viscose spinning fluid and then carrying out wet spinning on the mixture to obtain the final product. The ceramide is prepared into the micro-capsulesby a micro-capsule wrapping technology, and then the micro-capsules are added in the viscose spinning fluid to obtain skin-caring and moisturizing viscose fibers.

The invention discloses a layered double hydroxide-graphene oxide (LDH-GO) / waterborne epoxy composite material. A preparation method of the composite material comprises the following steps: (1) preparing PO4<3->-LDH; (2) preparing PO4<3->-LDH / GO nano-dispersion liquid; (3) preparing an aqueous coating base material; (4) preparing a PO4<3->-LDH / GO / epoxy composite coating. The PO4<3->-LDH / GO hybridmaterial prepared by means of simple ultrasonic treatment and an electrostatic interaction between GO and LDH has good dispersibility; in addition, the prepared nano-aqueous epoxy composite coating has a function of secondary protection due to release of phosphate between LDH layers, so that the corrosion resistance of the prepared coating is much better than that of the traditional water-based coating; furthermore, the method has the advantages of being simple to operate, low in energy consumption, low in equipment requirements, environmentally-friendly, and the like.

The invention discloses an automatic transportation device for preventing fruits from being damaged. The automatic transportation device comprises a transportation rail, a damping air bag, storage boxes, a damping spring, chutes and a fixed rack, wherein a transportation box is arranged on the lower side of the transportation rail, a protective box is arranged in the transportation box, the storage boxes are arranged in the protective box, partitions are arranged between two storage boxes, one end of the damping spring is fixed to the inner walls of the storage boxes, the other end of the damping spring is connected with a clamping plate, the chutes are formed in the inner walls of the storage boxes, rolling racks are fixed to the outer walls of the storage boxes, rollers are arranged on the lower side of the transportation box, a box door is arranged on the front side of the transportation box, and the fixed rack is arranged on the inner wall of the protective box. According to the automatic transportation device for preventing fruits from being damaged, the protective box is arranged, and the protective box is made of soft materials, so that the effect of preliminarily protectingthe storage boxes is achieved, and the damping air bag is arranged, so that vibration generated outside during transportation can be effectively reduced.

The invention relates to a left auricle occluder with bionic spinule attachment structures. The left auricle occluder at least comprises an attachment frame; the attachment frame includes a pluralityof elastic skeletons and a plurality of bionic spinule attachment structures; under a natural unconstrained state, the plurality of skeletons diverge outwards from the center and define a three-dimensional structure, and the attachment frame has anatomical form adaptability; the bionic spinule attachment structures are arranged on outer surfaces of the skeletons; each of the bionic spinule attachment structures has a form of imitating sparse spinules on the surface of a plant; each bionic spinule attachment structure includes a spinule root and a spinule; each spinule consists of a spinule body and a spinule tip; each spinule is in a straight line shape or a J shape or a combination of the straight line shape and the J shape; and the spinule bodies and / or the spinule tips can touch left auricle inner cavity tissues, thus realizing an attachment-type anchoring function. The left auricle occluder has a wide adaption range, has no injury during anchoring, is firm, has high safety, has excellent occluding effectiveness, and also facilitating realization of personalized customization aiming at clinical demands of patients.

The invention discloses a ready-to-use general practice medical kit, which comprises a lower kit body, an upper kit body and a placing area, wherein the upper kit body is hinged to the lower kit body, the placing area is arranged in the lower kit body, a display is arranged in the upper kit body, a diagnosis integral machine is arranged in the placing area and is connected with the display, a wiring port of the diagnosis integral machine is respectively connected with two or more than two detection probes through connecting wires, one side of the wiring port of the diagnosis integral machine is provided with a space for placing the detection probes, the wiring port of the diagnosis integral machine is provided with a clamping plate for fixing a plug of each connecting wire onto the wiring port, the clamping plate is provided with wire clamping grooves, the width of each wire clamping groove is smaller than the diameter of each plug at the wiring port of the diagnosis integral machine, the display and the diagnosis integral machine are connected in a wireless way, and one side of the lower kit body is provided with a pull-out window. The medical kit has the advantages that the time and labor are saved, the convenience in use is realized, the inserting and plugging are not needed, and the internal space is flexible and variable.

The invention discloses a secondary protection device for a receiving plate of a ship unloader. The secondary protection device aims to overcome the shortcoming that if an existing cam limiter arranged on the ship unloader for controlling steel wire ropes on a roller of a winch to lift the receiving plate breaks down, the steel wire ropes will be snapped and the receiving plate will fall. A rope penetrating frame with the vertical face parallel with the center line of the roller is installed on one side of the roller, the steel wire ropes penetrate through the rope penetrating frame, and swing arms capable of swinging along with the vertical face are oppositely installed on the two sides of the vertical face, opposite to the roller, of the rope penetrating frame respectively. The rope penetrating frame is further provided with a limiting switch, and when wires, wound around the roller, of the steel wire ropes move excessively towards the two sides respectively, the limiting switch can push the swing arms to cut off power of the winch. When the wires, wound around the roller, of the steel wire ropes continuously and excessively move towards the winding side or the releasing side, the parts, in the rope penetrating frame, of the steel wire ropes forcibly push the swing arms to be deflected towards one side of the limiting switch and to touch one side of the limiting switch, and therefore the power of the winch can be cut off, the accident that the steel wire ropes are snapped and the receiving plate falls is prevented, and secondary protection is achieved.

The invention discloses an elevator car rope head installation structure comprising a rope head plate (1), a car rope head fixing device (2), a car guide rail (3) and a speed limiter installing base (4) used for installing an elevator speed limiter. The back side of the rope head plate (1) is connected to a shaftway wall through a fixing support (5); the rope head plate (1) is provided with a plurality of connection holes for installing the car guide rail (3) in the vertical direction; the car guide rail (3) is fixedly connected to the front side of the rope head plate (1) through fastening pieces connected with the connection holes; and the car rope head fixing device (2) and the speed limiter installing base (4) are fixedly arranged on the front side of the rope head plate (1) and located on the two sides of the car guide rail (3). The elevator car rope head installation structure can be used for installing the elevator speed limiter at the same time, has the beneficial effects of being simple in structure, safe, steady and convenient to install and is particularly suitable for being used on an elevator without a machine room.

The invention discloses an assembly and method for refitting a common wardrobe into a clothes drying wardrobe. The problem thinking angle is changed, the clothes drying wardrobe is not directly designed, or the function of the clothes drying wardrobe is not added, and the volume of the clothes drying wardrobe is not reduced; instead, the common wardrobe which is necessary in the daily life and occupies much room space is changed into a clothes drying wardrobe, and the function of the common wardrobe is increased; and thus, the volume of the clothes drying wardrobe is relatively reduced, and the volume of the clothes drying wardrobe can be evenly considered to be zero.

The invention relates to an implanting instrument with bionic micro-thorn attachment structures. The implanting instrument at least comprises an attachment frame, wherein the attachment frame is a self-expanding type support or a ball-expanding type support and comprises a plurality of frameworks and a plurality of bionic micro-thorn attachment structures; the bionic micro-thorn attachment structures are arranged on the outer surfaces of the frameworks; the bionic micro-thorn attachment structures are in the form of bionic plant surface sparse micro-thorns; each bionic micro-thorn attachment structure comprises a thorn root and a micro-thorn; each micro-thorn is composed of a thorn body and a thorn tip; each micro-thorn is linear or J-shaped or the combination of the linear micro-thorn andthe J-shaped micro-thorn; and the thorn bodies and / or the thorn tips of the micro-thorns can touch cavity tissue to achieve an attachment type anchoring function. The implanting instrument is wide inapplication range, free of anchoring damage, firm and high in safety.

The invention discloses a lithium ion battery diaphragm which comprises a microporous membrane. The two walls at the outer side of the microporous membrane are both coated with silicon dioxide coatings, the outer side walls of the silicon dioxide coatings are bonded with aramid fiber layers, and the outer side walls of the aramid fiber layers are coated with ceramic coatings. The preparation method of the lithium ion battery diaphragm comprises the following steps of S1, adding a polyethylene raw material, a pore-forming agent and an additive into a heating container at the temperature of 85-110 DEG C to be heated, bonding an aramid fiber layer to the outer side wall of the silicon dioxide coating, then coating the outer side wall of the aramid fiber layer with the ceramic coating. The ceramic coating can prevent lithium crystals from penetrating through the polyethylene diaphragm of a lithium battery, and the better protection effect is achieved. The aramid fiber layer can play a role in secondary protection and can also play a role in preventing static electricity from influencing the lithium battery, so that the problem that certain hidden dangers exist in the use process due to the fact that the polyethylene diaphragm is easy to penetrate is solved, and the use safety of the lithium battery is improved.

The invention provides a graphene antibacterial conducting chip and relates to the technical field of personal sanitary products. The graphene antibacterial conducting chip comprises a first breathinglayer, an absorbing layer and a second breathing layer; a function layer contains a mixture of high-polymer water-absorbent resin and graphene powder to achieve the aim of high liquid absorbing speed, large absorbing volume and good absorbing effects and meanwhile to save cost and avoid liquid leakage to the maximum degree. Besides, the graphene antibacterial conducting chip achieves comprehensive properties such as odor absorption, moisture absorption and air permeability and meanwhile achieves the aim of diminishing inflammation and inhibiting bacteria. The invention also provides a graphene sanitary pad. The graphene sanitary pad has the advantages of high liquid absorbing speed, large absorbing volume and good absorbing effects and achieves the effects of odor and moisture absorption,air permeation, inflammation diminishing and bacteriostasis to effectively reduce incidence of gynecological diseases and meanwhile to keep skin dry and comfortable.

The invention discloses a preparation method of an anti-puncture breathable sole, and belongs to the technical field of labor protection articles. The preparation method is characterized in that: composite fibers are firstly formed, carbon nanotubes are contained in the composite fibers, the carbon nanotubes are evenly distributed in a net-shaped structure formed by acrylic resin under the actionof ultrasonic dispersion, and therefore the prepared composite fibers are high in tensile strength and good in bending toughness; and after molding, the sole has an extremely strong anti-puncture effect, a honeycomb foaming body integrally molded by foaming is arranged between the outsole and the midsole, and the honeycomb foaming body is exposed on the surface of the midsole and the side surfaceof the outsole, so that after the safety shoe is manufactured, air in the shoe can be ventilated and dissipated through the honeycomb foaming body, and when the midsole is subjected to the action force of stepping, the honeycomb foaming body can improve the wearing flexibility of the sole, and meanwhile, the puncture resistance is not influenced.

The invention discloses a safety injector which comprises an outer sleeve, a push rod, a rubber plug and a screw opening. The outer sleeve is perpendicularly arranged, the push rod is inserted into the outer sleeve from a lower end opening of the outer sleeve, the rubber plug is arranged on the push rod in a sleeving mode and located in the outer sleeve, a rubber plug installing opening and a breakage notch are sequentially formed in the upper portion of the outer circumferential face of the push rod from top to bottom, and a push rod boss is arranged at the top end of the push rod. The screw opening is inserted into the outer sleeve from an upper end opening of the outer sleeve. The push rod boss is inserted into the screw opening from a lower end opening of the screw opening. The safety injector is simple in structure and convenient to operate, the shape damage effect on a used injector is obvious, and repeated use of the injector can be prevented.

The invention relates to a seat belt partner used on a seat with various seat belts, in particular to a seat belt partner for the seat with the seat belt for various traffic tools; the seat belt partner of the seat comprises a seat headrest and a head protection device; the seat belt partner of the seat needs to be used together with the seat of a traffic tool and a recreation facility and the seat belt on the seat for a child, is mainly used for controlling the impact on the head and the neck within a certain safe scope when the traffic tool and the recreation facility have accidents and protecting the head and the cervical vertebra against injury, and plays a secondary protection role; and a side cushion is designed for a user to lean on when the user sits on the seat of the traffic tool to have a rest, and can be used for protecting the head sidewards.

The invention discloses a modular multi-chip packaging structure and a packaging method thereof. A plurality of packaging units are arrayed on a substrate, and the packaging unit is formed by a plurality of chips stacked in steps. The lead ends of the chips stacked in steps are located on the steps. On the surface, the lead ends of multiple chips are connected by chip wiring, and the chips do not need to be wired, which reduces the packaging volume of the chip and avoids the loss of electrical performance on the wirebond line. The plastic package is plastic-sealed. The bottom of the first plastic package is provided with an etched circuit connected to the chip wiring, and the connecting wiring is arranged on the substrate. The etched circuit at the bottom of the first plastic package is connected to the connection wiring on the substrate. Multiple packaging units are sealed on the substrate, and the chips are vertically placed on the substrate after plastic packaging. The independent modules can be packaged together to integrate different functions, which breaks the limitations of traditional multi-chip packaging, and has a simple structure. The connection is stable.

The invention discloses a building energy-saving system based on an integrated micro-grid system, relates to the technical field of building energy-saving systems, and aims to solve the problem that an existing building energy-saving system is not provided with a micro-grid system, so that the operation cost of the building energy-saving system cannot be well improved. A distributed wind power generation and photovoltaic power generation unit, a regional power supply unit, a charging unit, an energy storage unit and an energy management system are arranged in the equipment, the distributed wind power generation and photovoltaic power generation unit and the regional power supply unit are electrically connected with the energy storage unit, and the distributed wind power generation and photovoltaic power generation unit and the regional power supply unit are electrically connected with the charging unit. The energy management system comprises a distributed monitoring unit, an electric load monitoring unit, a charging monitoring unit, an environment monitoring unit, a main monitoring unit and an operation interface unit.

The invention provides a novel JP cabinet. The novel JP cabinet comprises a cabinet body, a cabinet door (1) and a top plate (7), wherein the top part of the cabinet body is provided with an opening; the cabinet door (1) is connected with the cabinet body; the top plate (7) is arranged at the top part of the cabinet body; the side surface of the cabinet body is provided with a louver (8); the interior of the top plate (7) is of a cavity structure; the bottom surface of the top plate (7) is provided with an opening (12) which is communicated with the internal cavity; the size of the opening (12) is matched with the top part of the cabinet body; the top part of the cabinet body is arranged in the internal cavity of the top plate through the opening; air ventilating holes (10) are formed in an edge (11) of the bottom surface of the top plate (7) at intervals and are communicated with the internal cavity; a stainless steel gauze net is arranged in the inner side of the louver (8), and a fixing mechanism is arranged around the gauze net. The novel JP cabinet solves the problems of the prior art that the JP cabinet fail to prevent dust and insects, the heat radiating is not enough, the electricity larceny prevention check is not convenient, and the placing is not convenient.

The invention relates to the technical field of a hoisting claw device and in particular relates to a hoisting claw device for a travelling crane. The hoisting claw device for the travelling crane comprises four claw hooks which are paired in a corresponding manner, wherein the top part, the middle part and the tail part of each claw hook are provided with pin holes, pins of which the middle parts are sheathed with fixing sleeves are arranged in four pin holes at the top parts of the four claw hooks correspondingly, two pins of which the middle parts are sheathed with fixing sleeves are arranged in two groups of pin holes in the middle parts of the four claw hooks correspondingly, two pins of which the middle parts are sheathed with fixing sleeves are arranged in the two groups of pin holes at the tail parts of the four claw hooks correspondingly, and claws for holding an article are arranged at the tail ends of the four claw hooks. According to the hoisting claw device for the travelling crane, the claws are arranged at the grabbing parts of the claw hooks, and therefore, the hoisting claw has a good locating effect, and the article cannot be separated from the hoisting claw easily.

The invention discloses a new energy automobile charging pile, and relates to the technical field of charging piles, the new energy automobile charging pile comprises a body, a base and a charging head, and further comprises a driving mechanism, a buffer mechanism, a detection mechanism, a sliding mechanism, a supporting mechanism, a guide mechanism and a traction mechanism, the base is installed at the lower end of the body, and the area of the contact surface of the base and the body is larger than the bottom area of the body; two buffer mechanisms are arranged in each connecting groove in the upper surface of the base, a detection mechanism is installed on the lower surface of the base, and each guide mechanism is connected with the supporting mechanism. Through cooperative use of all the mechanisms, in the using process of the device, accumulated water can be prevented from entering the body to cause damage, meanwhile, the influence of collision on the body can be reduced, lubricating oil can be automatically added in the using process, and thus deformation of the sliding rail is effectively prevented.

The invention discloses a ready-to-use general practice medical kit, which comprises a lower kit body, an upper kit body and a placing area, wherein the upper kit body is hinged to the lower kit body, the placing area is arranged in the lower kit body, a display is arranged in the upper kit body, a diagnosis integral machine is arranged in the placing area and is connected with the display, a wiring port of the diagnosis integral machine is respectively connected with two or more than two detection probes through connecting wires, one side of the wiring port of the diagnosis integral machine is provided with a space for placing the detection probes, the wiring port of the diagnosis integral machine is provided with a clamping plate for fixing a plug of each connecting wire onto the wiring port, the clamping plate is provided with wire clamping grooves, the width of each wire clamping groove is smaller than the diameter of each plug at the wiring port of the diagnosis integral machine, the display and the diagnosis integral machine are connected in a wireless way, and one side of the lower kit body is provided with a pull-out window. The medical kit has the advantages that the time and labor are saved, the convenience in use is realized, the inserting and plugging are not needed, and the internal space is flexible and variable.

The invention relates to a rotational structure of a mechanical arm for an automatic lathe. The rotational structure comprises a fixing plate A and a fixing plate B. A bearing pedestal is fixed to the upper portion of the fixing plate A. A linear bearing A is fixed to the upper end of the fixing plate B, a linear bearing B is fixed to the lower end of the fixing plate B, and a rotating shaft penetrates through the linear bearing A and the linear bearing B. A fixing shaft block is fixed to the upper side of the lower end of the fixing plate B, a rubber gasket is arranged between the fixing shaft block and the linear bearing A, and a buffer spring is arranged on the outer circumference of the linear bearing A. A protrusion part is arranged at the lower end of the rotating shaft. A rotating part is arranged on the lower portion and the protrusion part of the rotating shaft. The rotating part comprises a fixing piece A, a fixing disk, a fixing piece B, a fixing groove and a bolt. A bearing A is arranged inside the fixing disk, and a bearing B is arranged in the fixing groove. Two nuts are fixed to the lower end of the fixing groove. The nuts are connected with a threaded pipe, and a grabbing part is welded to the lower end of the threaded pipe. The rotational structure of the mechanical arm for the automatic lathe has the advantages of being easy and convenient to operate, capable of saving manpower and high in economic benefit.

The invention provides a transport package box for sealed containers. The transport package box comprises an outer sealing box and an inner sealing box, wherein an inner cavity of the outer sealing box is divided into a plurality of rectangular isolation spaces by vertical partition plates and horizontal partition plates arranged crosswise; an oblique partition plate is arranged in each of the isolation spaces; each isolation space is divided into two accommodating spaces matched with the inner sealing box by the oblique partition plate arranged in the isolation space; sliding chutes matched with sliding bulges in a sliding manner are formed in edges of the accommodating spaces; the inner sealing box is placed in the accommodating space matched with the inner sealing box through the sliding bulges. The inner sealing box provided by the invention changes point contact between an ordinary package box and a bottle of red wine into surface contact, and also plays a role of buffering; the outer sealing box is arranged to store a plurality of bottles of red wine and to play a role of secondary protection for the stored red wine when the inner sealing box with good buffering effect is provided.

The invention discloses an elevator car rope head installation structure comprising a rope head plate (1), a car rope head fixing device (2), a car guide rail (3) and a speed limiter installing base (4) used for installing an elevator speed limiter. The back side of the rope head plate (1) is connected to a shaftway wall through a fixing support (5); the rope head plate (1) is provided with a plurality of connection holes for installing the car guide rail (3) in the vertical direction; the car guide rail (3) is fixedly connected to the front side of the rope head plate (1) through fastening pieces connected with the connection holes; and the car rope head fixing device (2) and the speed limiter installing base (4) are fixedly arranged on the front side of the rope head plate (1) and located on the two sides of the car guide rail (3). The elevator car rope head installation structure can be used for installing the elevator speed limiter at the same time, has the beneficial effects of being simple in structure, safe, steady and convenient to install and is particularly suitable for being used on an elevator without a machine room.

The invention discloses a connecting pier for isolation and protection of motor vehicles and non-motor vehicles on the inner side of a bridge. The upper surface is connected with a placement board, and the upper middle part of the placement board is fixed with an inner rod, and the outer side of the inner rod is covered with a roller. Buckles are provided on the outer side of the upper part of the column, fixed blocks are installed on the upper and lower ends of the front side surface of the installation base, baffles are provided on the inner surface of the extruded plate, and the inner side of the baffle is connected to the installation base through a pull cord, and The outer surface of the baffle is provided with balls. The motor vehicle and non-motor vehicle isolation protection connecting pier inside the bridge can protect passing vehicles and avoid secondary casualties in the event of a traffic accident.

The invention discloses an electronic seal of a container, comprising a monitoring circuit unit, a current circuit unit, a wireless transmission module, a power supply circuit unit and a charging circuit unit. The current circuit unit is electrically connected with the monitoring circuit unit, the wireless transmission module is electrically connected with the monitoring circuit unit, the power supply circuit unit is electrically connected with the monitoring circuit unit and the current circuit unit so as to supply working voltage of the power supply circuit unit, and the charging circuit unit is electrically connected with the monitoring circuit unit. An alarm message can be sent to a management center at the first time after the container electronic seal is damaged so that a manager can accurately and quickly know the time, the position and the cargo information of the stolen container, and the possibly generated loss is reduced or even avoided when the cargo is stored in the container. The novel container electronic seal can send the position and the cargo information of the container to the management center of a warehouse while the electronic seal of the container is pried, and staff can arrive at the scene at the first time, thereby the effect of secondary protection is achieved.

The invention discloses a novel high-efficiency air door structure capable of preventing spontaneous combustion. The novel high-efficiency air door structure capable of preventing spontaneous combustion comprises a mounting frame, three rotating shafts, a fire extinguishing assembly and a driving assembly, wherein the front and rear side surfaces are both fixedly connected with fixed plates, and the inner side surfaces of the fixed plates are respectively and fixedly connected with the front and rear side surfaces of a protective cover; the outer cambered surfaces of the three rotating shaftsare respectively and rotatably connected with the inner walls of round holes formed in a top plate and bottom plate of the mounting frame, the three rotating shafts are distributed at equal intervals,the middle part of the outer cambered surface of each rotating shaft is fixedly connected with the inner wall of a through hole in the center of a wind shield, and a connecting assembly is arranged on the upper end of each rotating shaft; the fire extinguishing assembly is arranged on the upper surface of a bottom plate of the protective cover; and the driving assembly is arranged on the upper surface of the mounting frame. According to the novel high-efficiency air door structure capable of preventing spontaneous combustion, the control is automatically carried out, so that the manual operation is reduced, the use is convenient, the direction and volume of air inlet are convenient to adjust, and the application range is wide; and the fixed-point fire extinguishing is realized, the position is accurate, the reliability is high, the fire extinguishing speed is high, and the safety is good.

The invention relates to the technical field of constructional engineering, in particular to a steel building formwork with a metal outer frame. The steel building formwork comprises a formwork panel, #-shaped reinforcing ribs are fixedly connected to the bottom of the formwork panel, the metal outer frame is fixedly connected to the outer side of the formwork panel, and connection stabilizing mechanisms are arranged below four corners of the metal outer frame and the formwork panel. The connection stabilizing mechanisms comprise four first connecting shafts and four second connecting shafts, the first connecting shafts are fixedly connected to the four corners of the metal outer frame, the second connecting shafts are fixedly connected to the four corners of the formwork panel, a circle of annular elastic belts are fixedly connected between the two groups of adjacent first connecting shafts and the second connecting shafts, and an annular connecting seat is fixedly connected to the centers of the annular elastic belts. According to the steel building formwork with the metal outer frame, the connection stabilizing mechanisms are arranged, the annular elastic belts are connected to the two connecting shafts, the metal outer frame and the formwork panel cannot fall off, and the stabilizing effect can be achieved.