2511results about "War-like protection" patented technology

The invention provides a gallery-cabin connection and design method of a pipe gallery type seabed data center, and is suitable for the field of underwater data center construction. The gallery-cabin connection comprises an underwater suspension pipe gallery and a seabed data cabin, an airtight door is arranged on the side face of the underwater suspension pipe gallery, a section of connecting channel extends out of the airtight door, and the connecting channel is provided with a drainage channel and an air pressure balance channel to be connected with the underwater suspension pipe gallery. The channel is connected with the seabed data cabin through a rubber waterstop, and a humidity sensor is arranged in the channel; through a back-and-forth channel communicated between the underwater suspension pipe gallery and the seabed data cabin, the convenience requirements of personnel entering the seabed data cabin through the underwater suspension pipe gallery for overhauling, replacement, maintenance and capacity expansion can be met; through a pressure balance valve and a humidity sensor, the safety of personnel and a server in the opening process of the cabin door of the seabed data cabin is ensured; and meanwhile, through a detachable connection mode, the characteristic that the seabed data cabin integrated module can be subjected to structural maintenance after being detached is reserved.

The present invention relates to the technical field of building walls, and discloses a pressure relief explosion-proof wall structure, including an embedded box embedded in the wall, an outer sealing plate is rotatably provided on the left side plate of the embedded box, and a slide plate is slidably provided on the right side plate, an inner sealing plate corresponding to the outer sealing plate is rotatably provided on the slide plate, and a connecting rod is rotatably connected between the outer sealing plate and the inner sealing plate; an extension plate is integrally provided at the end of the slide plate, and a limit plate is elastically slidably inserted on the embedded box. The present invention can achieve a pressure relief effect to reduce the probability of damage to the wall and the effect of personal injury, and can also keep the outer sealing plate and the inner sealing plate in an open state when there is no explosion risk and ventilation is required, so as to achieve indoor ventilation and play the role of a ventilation window, thereby eliminating the setting of the ventilation window in the prior art, reducing the number of reserved installation openings in the wall, and enhancing the strength of the wall.

The invention relates to the technical field of metro platform screen doors, in particular to a novel particulate matter-preventing energy-saving metro platform screen door with an adjustable tuyere, which comprises a metro platform, and a plurality of left-side perforated platform screen doors and right-side perforated platform screen doors are fixedly mounted on two sides of the metro platform respectively; a rotating mechanism is movably connected to one side of each shielding door with holes in the left side and one side of each shielding door with holes in the right side, an automatic control system is fixedly connected to one side of one shielding door with holes in the left side, and a left tunnel and a right tunnel are correspondingly arranged on one side of each shielding door with holes in the left side and one side of each shielding door with holes in the right side. The automatic control system adjusts the angle of the rotary baffle and closes the holes in the shielding doors on the two sides through a control circuit, on one hand, the filter screen can filter out coarse particles, on the other hand, the shielding doors can block fine particles such as PM2.5, and therefore dispersion of the particles in the tunnel into the platform is reduced, and in summer, due to the fact that the holes of the shielding doors are closed, the shielding doors can not be blocked. The loss of cold air in the platform into the tunnel is reduced, and energy is saved.

The invention relates to the technical field of intelligent construction, in particular to an ultra-low energy consumption building structure based on light materials and an intelligent construction method.The ultra-low energy consumption building structure based on the light materials comprises an outer wall and a window, the outer wall is composed of a structural layer, a heat insulation layer, a waterproof layer, a heat preservation layer, a decoration layer and a plate buckle structure and used for heat preservation, heat insulation and control of indoor and outdoor heat exchange, and the window is composed of a window frame, glass and sealing strips. The fresh air heat recovery system is used for optimizing a heat transfer path, reducing heating, refrigeration and ventilation energy consumption of a building, preventing moisture from invading a room and avoiding wall mildew and structural damage, and the fresh air heat recovery system is composed of a heat exchange system, a power system, a filtering system, a box body and a control system and is used for ventilation, air exchange, air purification and indoor environment adjustment, so that the energy consumption of an air conditioning system is reduced, and the energy consumption of the air conditioning system is reduced. The energy-saving technology of light materials is adopted, energy consumption and carbon emission are reduced, the intelligent construction scheme is adopted, the construction period is shortened, and the construction cost is reduced.

The utility model discloses a protective door of a tower tube platform channel, which relates to the technical field of protective doors of tower tube platform channels and comprises a tower tube platform. Through the arrangement of the storage bin, the falling pipe, the blocking plate, the control motor, a brush, a first transmission gear, a second transmission gear, a second motor, a transmission rod, a first motor, a connecting block, a first threaded rod and a second threaded rod, the protective door of the tower barrel platform channel has the beneficial effects that lubricating oil can be conveniently smeared on the first threaded rod and the second threaded rod; according to the protective door of the tower barrel platform channel, the situation that lubricating oil is manually smeared too troublesomely is avoided, and the time is long, and through arrangement of a first motor, a first threaded rod, a connecting block, a connecting shaft, the protective door body, a power wheel, a bearing shaft, a bearing, a limiting block and a limiting groove, the power wheel does not rotate when the first motor works; and the situation that the staff accidentally collides with the rotating handle in the rotating process, and the staff are easily injured is avoided.

The utility model discloses an off-axis door assembly, a door frame of the off-axis door assembly and a door leaf of the off-axis door assembly, the off-axis door assembly comprises the door leaf, the door frame and an inflation and deflation component, the door leaf is hinged to the door frame, at least one of the door leaf and the door frame is provided with a first sealing component capable of being inflated and deflated, and the door frame is provided with a second sealing component capable of being inflated and deflated. The inflating and deflating component is connected with the first sealing component, the inflating and deflating component is configured to be capable of inflating or deflating the first sealing component, the first sealing component has a bulging state and a deflated state, and the first sealing component in the bulging state is used for sealing between the door leaf and the door frame. The off-axis door assembly is good in sealing performance, and therefore the off-axis door assembly can have the good sound insulation performance, the good heat insulation performance and the like.

A door-type assembly type bidirectional wave-absorbing and explosion-proof shielding valve belongs to the related technical field of protective equipment and comprises an assembly unit, the assembly unit comprises a valve body, a ventilation channel is arranged on the valve body, a valve cavity is arranged in the middle of the ventilation channel, an opening structure, communicated with the ventilation channel, of the valve cavity is a valve cavity air opening, a valve element is arranged in the valve cavity, and the valve element is arranged in the valve cavity. The valve element can elastically move in the airflow flowing direction, and the valve element can block the valve cavity air opening in front of the valve element in the airflow flowing direction so that airflow of the ventilation channel can be stopped. On the basis that the ventilation performance is guaranteed, the wave absorbing device has the remarkable performance advantage in the wave absorbing performance. According to the bidirectional wave absorbing valve, closing is achieved through shock waves and resetting is achieved through the spring device in principle, the valve element can move and reset in the front-back direction, impact airflow on the two sides of the door leaf can be effectively stopped, and the bidirectional wave absorbing effect is achieved; the problem that in the prior art, a dangling type valve and a rubber pipe type valve cannot bear shock waves in the two directions is solved.

The invention relates to the technical field of explosion-proof wave valves, and provides a dangling type explosion-proof wave valve with an electromagnetic shielding function. The dangling type anti-explosion-wave valve with the electromagnetic shielding function comprises a door frame and a door leaf which are matched with each other, a ventilation cut-off waveguide window is installed at the position, corresponding to a ventilation window, of an inner door plate of the door leaf, an electromagnetic shielding sealing assembly is arranged at the position of a gap between the door frame and the door leaf, and the door frame and the door leaf are connected through a manual locking assembly. Opening and closing operation of the door leaf is achieved. The dangling type explosion-proof wave valve with the electromagnetic shielding function can effectively prevent explosion wave impact and electromagnetic pulse impact damage, protect the safety of indoor equipment and personnel, guarantee normal use of electronic information equipment, effectively maintain national defense safety, meet the requirement for uninterrupted ventilation and improve the safety of the electronic information equipment. And a good working environment is provided for internal personnel.

A doorsill-free waterproof air-tight door belongs to the related technical field of civil air defense equipment and comprises a door frame and a door leaf, the door leaf is hinged to the door frame and can be in water-tight contact with the two side edges and the top edge of the door frame in a closed state, and a door lock system is arranged on the door leaf and used for locking the door leaf on the door frame; a ground sealing assembly in linkage with the door lock system is further arranged on the door leaf, the ground sealing assembly comprises a ground sealing beam which is hinged to the door leaf and can turn over up and down relative to the door leaf, a sealing rubber strip which can deform under pressure is arranged on the bottom face of the ground sealing beam, and the ground sealing beam can make sealed contact with the door leaf and the ground at the same time. And the locking mechanism is linked with the ground sealing beam, so that the door can be quickly opened and closed, and extremely low leakage can be realized in a relatively long time. No matter at ordinary times or wartime, no threshold protruding out of the ground exists, a large number of people can pass through conveniently, a brand-new ground sealing mechanism is adopted for sealing the ground, and the threshold does not need to be moved or a door leaf does not need to be lifted.

The utility model relates to the field of civil air defense engineering, in particular to a high-sealing-performance double-leaf explosion-proof door which comprises a frame body, a first door leaf and a second door leaf, the first door leaf and the second door leaf are both rotationally connected with the frame body, a first containing groove is formed in one end of the first door leaf, and a second containing groove is formed in one end of the second door leaf. After the first door leaf and the second door leaf are both rotationally closed, the first containing groove communicates with the second containing groove, a first elastic bag is arranged in the first containing groove, a second elastic bag is arranged in the second containing groove, and the first elastic bag and the second elastic bag both communicate with a water supply assembly. The first elastic bag and the second elastic bag abut against each other after being filled with water. The door has the following effect that the sealing performance of the first door leaf and the second door leaf after closing can be improved.

The utility model discloses a bank branch security environment monitoring device, the structure of which includes a fixed door, a door frame, a monitoring machine, and a security door. The fixed door is fixedly installed in the door frame frame, and two security doors are symmetrically distributed. The security door includes a rotating shaft, a connecting strip, a shaking body, a handle, a built-in grid, and a security glass. The rotation and return of the rotating shaft will drive the connecting strip to stretch and retract. When the connecting part is pulled, it is in a straight state. When the connecting part is rotated, it is in a bendable loose state. The unfixed parts connected to the two sides of the shaking body will shake with the inertia of the connecting strip. The pulling body inside the built-in grid will pull the toughness strip to pull the rotating shaft. The elastic block will drive the reflective layer to move while the solid body bears the inertial force. The reflective layer is distributed inside the built-in grid. When light is irradiated on the surface of the reflective layer, it will be refracted to the vicinity. It will continuously block the peripheral vision and prevent the peripheral from being peeped for a long time.

The utility model relates to the technical field of safety doors, in particular to a silent safety door with flush frames and sashes, which comprises a door frame, a door body is rotatably connected in the door frame through hinges, a handle is fixedly mounted on the door body, a shielding mechanism is arranged on the door body, a silent mechanism is arranged in the door body, the silent mechanism comprises a vacuum cavity and a cavity, and the vacuum cavity is communicated with the cavity. The vacuum cavity and the cavity are both formed in the door body, a sound absorption layer is fixedly installed in the cavity, a sound insulation layer is fixedly installed on the sound absorption layer, and one side of the sound insulation layer is fixedly connected with the cavity. The safety door has the advantages that the silence mechanism is arranged, the silence capacity of the safety door is improved, use of the safety door is facilitated, the shielding mechanism is arranged, the sun-shading and rain-sheltering functions are provided for people, and practicability of the safety door is improved.

The invention discloses an electric air-tight door for bridge engineering, which relates to the technical field of air-tight doors and comprises a bridge body, a control system, a door opener, a door frame system, a door leaf system, a rotating system, a locking system, a transmission mechanism and a sealing mechanism. The door leaf system is fixed on the door frame system through a door leaf fixing frame; the bridge body provides frame fixing and supporting for the control system, the door opener, the door frame system, the door leaf system, the rotating system, the locking system, the transmission mechanism and the sealing mechanism, the door leaf system and the door frame system are connected together through the rotating system through a connecting rod assembly, and the door opener and the transmission mechanism provide and transmit power for the rotating system. The locking system and the sealing mechanism are used in cooperation to achieve overall locking and sealing of the electric air-tight door. The device is ingenious in conception, fast and stable in operation, safe and reliable, has the advantages of airtightness, heat preservation, impact resistance, wind prevention, dust prevention and the like, and has good market prospects and development space compared with the prior art.

The present application relates to the field of door core material preparation, and particularly relates to a heat-insulating and fireproof door core material for security doors and a preparation method thereof, comprising a protective layer, a heat-insulating layer and a core part, wherein the core part comprises a plurality of springs arranged at equal intervals and fixed plates arranged at both ends of the springs; the heat-insulating layer is arranged outside the fixed plates; and the protective layer is bonded to the outside of the heat-insulating layer and is a foamed aluminum plate, which is prepared as follows: S1, cutting the fixed plates and then welding spring fixing bases and fixing buckles; S2, arranging and fixing the springs; S3, weighing the component materials of the heat-insulating layer, adding water and mixing uniformly; S4, based on a core material preparation system, sequentially completing pouring, jarring, smoothing and heat-insulating drying of the two heat-insulating layers after setting; S5, preliminarily determining whether the preparation of the heat-insulating layer meets preset standards according to the measured compressive strength; and S6, bonding the protective layer. On the basis of ensuring the performance of the core material, the present application can also be applied to the door core of security doors with different thicknesses.

The utility model provides an elastic safety sealing door, which belongs to the technical field of sealing doors and comprises an outer door frame. The protective glass is fixedly connected to the inner surface of the outer door frame, and the inner surface of the outer door frame is slidably connected with sealing glass; each elastic assembly comprises a sliding shell, the sliding shell is fixedly connected to the inner wall of one side of the outer door frame, the circumferential inner wall of the sliding shell is slidably connected with an extrusion rod, and one side end of the extrusion rod is fixedly connected with a connecting soft cushion; the second spring is fixedly connected to the inner surface of the sliding shell, the circumferential inner wall of the sliding shell is slidably connected with a sliding plate, and the internal structure of the sealing door is changed into an elastic structure, so that the sealing door and the sealing strip are completely parallel in the machining and assembling process, and the pressure in the sealing door is conveniently and uniformly adjusted; and the safety and the sealing performance of the sealing door are improved.

According to the aluminum alloy door and window with the anti-theft function in the field of doors and windows, through the built-in anti-theft net arranged in the window frame, an independent anti-theft net does not need to be installed on the outer side of the aluminum alloy window, and through the pair of anti-theft ropes arranged in a bilateral symmetry mode and the first winding mechanism, the anti-theft effect is achieved; a pair of anti-theft ropes which are arranged in a bilateral symmetry mode is tensioned to form a vertical grid-shaped anti-theft net, rapid erection of the anti-theft net is achieved, the anti-theft ropes are rapidly pulled and stored through a storage mechanism comprising a traction ring, a traction rope and a second winding mechanism, rapid storage of the anti-theft net is achieved, and the anti-theft net is convenient to use. The problem that a traditional detachable anti-theft net is tedious in operation is solved, after the anti-theft rope is stored, the aluminum alloy window has a large viewing view field, and practicability and attractiveness are achieved; in addition, by arranging a human body proximity sensor, a distance sensor, a window sash driving mechanism and an anti-theft system, different anti-theft operations are automatically adopted according to different scenes, and multi-stage anti-theft is achieved.

The utility model belongs to the technical field of mining industry, and discloses a waterproof and airtight door for mining, including a door frame assembly for supporting and fixing, and also including a door body assembly for locking and closing installed on the door frame assembly, wherein a sealing assembly for multi-layer annular compression sealing is arranged on the door body assembly, and the sealing assembly and the door body assembly are pasted together; the door body assembly includes a door panel body, a hinge shaft is arranged on one side of the door panel body, a boss is arranged in the middle of the door panel body, and the boss is in the shape of a frustum. The waterproof and airtight door for mining described in the utility model has enhanced automatic centering and balancing performance and ensured uniformity of force and reliability of sealing through the arrangement of inclined meshing compression sealing; ensured tightness of sealing through the arrangement of multi-layer annular compression sealing; ensured tightness of sealing through the arrangement of multi-layer annular compression sealing; ensured reliability of locking and fixing through the arrangement of wedge-shaped locking blocks.

The utility model relates to the technical field of explosion-proof valves, and discloses a buffer mechanism of an explosion-proof valve, which comprises a valve main body, a baffle plate is arranged in the valve main body, and fixing plates are arranged at two ends of the right side of the baffle plate. According to the buffer mechanism of the anti-explosion valve, the buffer spring, the reset spring, the movable sleeve and the hinge rod are arranged, when explosion and other situations occur, shock waves can make the valve body move, and therefore the valve body can be close to the door plate, and when the valve body is close to the door plate, a buffer plate can extrude the door plate; when the shock waves disappear, the buffer spring and the reset spring enable the movable sleeve to drive the buffer plate to reset through the hinge rod through the elasticity of the buffer spring and the reset spring, and the situation that the valve body cannot be buffered after explosion again is prevented; the problems that after a valve is buffered, the valve is inconvenient to rebound again, and the buffering effect is easily affected are solved.

The utility model discloses a rack type movable explosion door which comprises a door body, a rotating gear is movably connected to the middle of the rear wall face of the door body, an upper horizontal moving rack is arranged above the rotating gear, a lower horizontal moving rack is arranged below the rotating gear, and the tooth portion of the bottom face of the upper horizontal moving rack is meshed with the rotating gear. A tooth part on the top surface of the lower horizontal moving rack is meshed with the rotating gear; a right vertical plate is fixed to the right end of the upper horizontal moving rack, a left vertical plate is fixed to the left end of the lower horizontal moving rack, and a plurality of transverse limiting columns are fixed to the outer side wall of the left vertical plate and the outer side wall of the right vertical plate. The plurality of connecting sleeve bodies can ensure the transverse horizontal state of the upper horizontal moving rack and the lower horizontal moving rack, so that the upper horizontal moving rack and the lower horizontal moving rack are basically not deformed, and normal use is ensured.

The utility model provides a shock-proof anti-theft door which comprises an anti-theft door body, the anti-theft door body is divided into a front plate and a rear plate, the interior of the anti-theft door body is of a hollow structure, a layer of partition plate is further arranged in the anti-theft door body, a plurality of round holes are formed in the partition plate, and the shock-proof anti-theft door further comprises a first sleeve and a second sleeve. A first damping spring and a second damping spring are installed on the outer side wall of the first sleeve and the outer side wall of the second sleeve in a surrounding mode, the end of the first damping spring is fixedly connected with the bottom edge of the first sleeve and the rear side wall of the partition plate, and a monitoring assembly is further arranged on the anti-theft door body in a penetrating mode. According to the shock absorption type anti-theft door, the first damping spring and the second damping spring are used for absorbing external impact force, it is guaranteed that the anti-theft door body is not deformed and damaged by impact, meanwhile, the influence of external wind power can be reduced, and noise generated when the anti-theft door body is impacted by wind is weakened.

The invention relates to intelligent civil air defense and flood gate equipment and system and a control method thereof. The equipment comprises a gate body and a gate leaf driving mechanism. The door body comprises a lower locking mechanism; bottom lifting type sealing structures are arranged between the bottoms of the left door leaf and the right door leaf and the lower door frame. The door leaf driving mechanism is connected with the left door leaf and the right door leaf; the system further comprises an intelligent control device, the intelligent control device comprises a sensor module, a drive control module and a remote control platform, the sensor module and the drive control module are integrated on the door body, and the sensor module comprises a door leaf opening and closing position detection sensor, a bottom lifting type sealing structure pressing state detection sensor and a water level height detection sensor. And the driving control module controls the door leaf driving mechanism and the lower locking mechanism according to a detection signal of the sensor module and an instruction of the remote control platform. By optimizing a door body sealing and locking execution structure and combining a sensing monitoring and centralized control mode, the sealing reliability and control safety of the civil air defense door under the conditions of high water level and complex water flow are improved.

The utility model belongs to the technical field of railway station building construction and fire protection, and particularly relates to a fireproof type shielding door machine structure which comprises a shielding door and a concrete side plate serving as an upper supporting structure, and a steel structure frame and a fireproof door machine top box are fixed on the concrete side plate. Assembly gaps among the concrete side plates, the shielding door and the steel structure frame are blocked through fireproof structures, and each fireproof structure comprises a fireproof combined component and a fireproof cloth felt. The platform screen door system can be suitable for various current railway stations, effectively solves the fireproof safety problem of passengers in the current railway stations on the platform screen door system, and ensures the safety of fire rescue. Especially for an underground atrium type railway station, adverse effects on life safety of passengers and station operation evacuation when a train fire occurs are reduced to the maximum extent.

The utility model belongs to the technical field of protective air-tight doors, and particularly relates to an anti-impact protective air-tight door which comprises a door frame, an air-tight door body is hinged to one side of the interior of the door frame, a hollow groove is formed in the air-tight door body, a protective door body is slidably connected into the hollow groove, and the anti-impact protective air-tight door further comprises a buffering assembly arranged in the hollow groove. The protective door is located between the protective door and the bottom of the hollow groove; the sealing assembly is used for tightly attaching the sealing door to the door frame; the sealing assembly is arranged on the side, away from the door frame and hinged to the sealing door, of the door frame. The door frame is tightly attached to the air-tight door, and therefore the poor sealing effect caused by a gap between the door frame and the air-tight door is avoided.

The invention discloses a multifunctional novel air conditioning control panel system and a control method, and relates to the field of air conditioning control devices. According to the multifunctional novel air conditioning control panel system and the control method, the system comprises a bed main body, a sealing door, oxygen production equipment, an air treatment module and a monitoring module. According to the multifunctional novel air conditioning control panel system and the control method, the oxygen concentration in the bed body main body is controlled by the air processing module, the oxygen concentration in the bed body main body is accurately adjusted, the oxygen concentration in the indoor space is controlled, the use comfort of personnel is guaranteed, an oxygen bottle does not need to be manually and actively held for oxygen inhalation, and the working efficiency is improved. Under the action of the oxygen tent with certain sealing performance, oxygen is generated and escaped out of the oxygen tent to the minimum extent, it is guaranteed that the space is in the specific oxygen concentration, and altitude stress caused by plateau hypoxia is well recovered.

The invention relates to the technical field of civil air defense equipment, in particular to civil air defense protection equipment with a polyurea coating, which comprises a civil air defense door body, a support mounting assembly, an easily-detachable connecting assembly and a maintenance treatment assembly, the surface and an internal interlayer of the civil air defense door body are both provided with the polyurea coating, and one side of the civil air defense door body is provided with two support arms; the surface of the civil air defense door body is provided with the polyurea coating, the corrosion resistance and the anti-rust performance of a metal structure are improved, then when the civil air defense door body is installed, the supporting installation assembly with the maintenance treatment assembly and the easy-to-disassemble connecting assembly is arranged, when a bearing movably connected with the civil air defense door body is damaged and replaced, rapid and convenient replacement can be conducted, and the service life of the civil air defense door body is prolonged. In addition, the maintenance processing assembly can achieve water vapor blowing drying on the surface of the supporting connecting box and convenient lubrication of a supporting bearing in the supporting connecting box, and the using convenience and the corrosion-resistant safety of the civil air defense door body are further improved.

The utility model belongs to the technical field of explosion venting membrane windows, and particularly discloses a nuclear power flying object prevention explosion venting membrane window which comprises an outer window frame, an inner window frame and an explosion venting membrane, the outer window frame and the inner window frame are rotationally installed through a hinge, and locking fasteners are arranged on the sides, away from the hinge, of the outer window frame and the inner window frame. An explosion venting through cavity is formed in the inner side of the inner window frame, the explosion venting membrane is installed in the explosion venting through cavity of the inner window frame in a sealed mode through a plurality of locking pieces, and meanwhile a steel grating abutting against the end face of the explosion venting membrane is arranged on the inner side of the inner window frame. When high pressure occurs indoors, the explosion venting film is exploded to quickly release indoor pressure, damage to indoor equipment, instruments and meters caused by the fact that external flying objects are rolled up by tornado is prevented, and meanwhile damage to the indoor equipment, instruments and meters caused by pressure increase after indoor explosion is prevented. And meanwhile, follow-up workers can conveniently replace and install the explosion venting membrane.

A green energy-saving cold store is provided, including a cold room, a platform, a machine room, and a refrigerating system. A drying layer (1) is arranged below the first floor of the cold room; a ground heat insulation layer (2) is moved downwards into the drying layer (1) and is separated from a first floor slab (3); an inner wall (4), an internal partition wall, and the wear-resistant waterproof floor (33) are directly located on the first floor slab (3) and integrated with a frame structure; a peripheral protective wall adopts a light steel structure wall surface (14), and is connected to the frame structure by means of ball joint tie beams (15) at the intersection points between frame beams and columns. The cold store is energy-saving and environment-friendly, and has good anti-seismic and fireproof performance.

The invention discloses a subway platform protective shielding door, which relates to the technical field of subway protective shielding doors. The technical solution thereof includes an upper track, a lower track, a fixed leaf arranged between the upper track and the lower track, and a movable leaf sliding on the upper track and the lower track. The movable leaf is provided with a receiving groove, and a movable door with limited movement is arranged in the receiving groove. The movable leaf and the movable door are connected by a first spring. The shielding door is provided with a movable door that can slide in a limited position in the receiving groove provided on the movable leaf, and the two are connected by a first spring, so that the shielding door first closes the entrance and exit passage through the contact of the movable door during the closing process, and then the passenger will be clamped by the movable door if he / she fails to run in time, and the clamping force of the movable door is small, so that it is convenient for the passenger to escape from between the movable doors, thereby avoiding personal injury and damage to the passenger's belongings, and improving the stability of the subway operation order.

The present invention relates to the field of civil air defense doors, and discloses a civil air defense door for civil air defense protection, comprising a door frame and a civil air defense door body, wherein two civil air defense door bodies are installed in the door frame through a rotating structure, and a first locking structure is arranged at a front side of each civil air defense door body near the middle. When the two civil air defense door bodies are closed on the door frame, an extrusion structure is used to release the limit of a first lock plate on the first locking structure by a limiting structure, and the first lock plate can be pulled and inserted into the first lock frame of the door frame through a pulling structure, thereby greatly shortening the locking time of the two closed civil air defense door bodies and improving safety; and a second locking structure is arranged on the first lock plate and the door frame, so that after the first locking structure locks the civil air defense door body, it can automatically drive the second locking structure to perform locking work, so that the civil air defense door body arranged on the door frame is locked more firmly and the civil air defense effect is better.